diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 8c10bf375c73d281c5b9e0919e23e1064ba8abc9..1b7f9acbcbbe450c8d0f3f8a16d592275c61a5dd 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -144,9 +144,6 @@ journal_async_commit Commit block can be written to disk without waiting
mount the device. This will enable 'journal_checksum'
internally.
-journal=update Update the ext4 file system's journal to the current
- format.
-
journal_dev=devnum When the external journal device's major/minor numbers
have changed, this option allows the user to specify
the new journal location. The journal device is
@@ -356,11 +353,6 @@ nouid32 Disables 32-bit UIDs and GIDs. This is for
interoperability with older kernels which only
store and expect 16-bit values.
-resize Allows to resize filesystem to the end of the last
- existing block group, further resize has to be done
- with resize2fs either online, or offline. It can be
- used only with conjunction with remount.
-
block_validity This options allows to enables/disables the in-kernel
noblock_validity facility for tracking filesystem metadata blocks
within internal data structures. This allows multi-
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index f9e2cd8cf711d2f43a74f5a5f4cc830604cd82d9..4bbd07a6fa189f6ab3f87825e3b94c061972c666 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -336,10 +336,10 @@ static int ext4_valid_block_bitmap(struct super_block *sb,
* Return buffer_head on success or NULL in case of failure.
*/
struct buffer_head *
-ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
+ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
{
struct ext4_group_desc *desc;
- struct buffer_head *bh = NULL;
+ struct buffer_head *bh;
ext4_fsblk_t bitmap_blk;
desc = ext4_get_group_desc(sb, block_group, NULL);
@@ -348,9 +348,9 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
bitmap_blk = ext4_block_bitmap(sb, desc);
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
- ext4_error(sb, "Cannot read block bitmap - "
- "block_group = %u, block_bitmap = %llu",
- block_group, bitmap_blk);
+ ext4_error(sb, "Cannot get buffer for block bitmap - "
+ "block_group = %u, block_bitmap = %llu",
+ block_group, bitmap_blk);
return NULL;
}
@@ -382,25 +382,50 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
return bh;
}
/*
- * submit the buffer_head for read. We can
- * safely mark the bitmap as uptodate now.
- * We do it here so the bitmap uptodate bit
- * get set with buffer lock held.
+ * submit the buffer_head for reading
*/
+ set_buffer_new(bh);
trace_ext4_read_block_bitmap_load(sb, block_group);
- set_bitmap_uptodate(bh);
- if (bh_submit_read(bh) < 0) {
- put_bh(bh);
+ bh->b_end_io = ext4_end_bitmap_read;
+ get_bh(bh);
+ submit_bh(READ, bh);
+ return bh;
+}
+
+/* Returns 0 on success, 1 on error */
+int ext4_wait_block_bitmap(struct super_block *sb, ext4_group_t block_group,
+ struct buffer_head *bh)
+{
+ struct ext4_group_desc *desc;
+
+ if (!buffer_new(bh))
+ return 0;
+ desc = ext4_get_group_desc(sb, block_group, NULL);
+ if (!desc)
+ return 1;
+ wait_on_buffer(bh);
+ if (!buffer_uptodate(bh)) {
ext4_error(sb, "Cannot read block bitmap - "
- "block_group = %u, block_bitmap = %llu",
- block_group, bitmap_blk);
- return NULL;
+ "block_group = %u, block_bitmap = %llu",
+ block_group, (unsigned long long) bh->b_blocknr);
+ return 1;
}
+ clear_buffer_new(bh);
+ /* Panic or remount fs read-only if block bitmap is invalid */
ext4_valid_block_bitmap(sb, desc, block_group, bh);
- /*
- * file system mounted not to panic on error,
- * continue with corrupt bitmap
- */
+ return 0;
+}
+
+struct buffer_head *
+ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
+{
+ struct buffer_head *bh;
+
+ bh = ext4_read_block_bitmap_nowait(sb, block_group);
+ if (ext4_wait_block_bitmap(sb, block_group, bh)) {
+ put_bh(bh);
+ return NULL;
+ }
return bh;
}
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 164c56092e5865a99238893c5717efc60a7aea4e..ad56866d729a506fce577e69ef8ca2b8852d494d 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -91,17 +91,17 @@ int __ext4_check_dir_entry(const char *function, unsigned int line,
return 0;
if (filp)
- ext4_error_file(filp, function, line, bh ? bh->b_blocknr : 0,
+ ext4_error_file(filp, function, line, bh->b_blocknr,
"bad entry in directory: %s - offset=%u(%u), "
"inode=%u, rec_len=%d, name_len=%d",
- error_msg, (unsigned) (offset%bh->b_size),
+ error_msg, (unsigned) (offset % bh->b_size),
offset, le32_to_cpu(de->inode),
rlen, de->name_len);
else
- ext4_error_inode(dir, function, line, bh ? bh->b_blocknr : 0,
+ ext4_error_inode(dir, function, line, bh->b_blocknr,
"bad entry in directory: %s - offset=%u(%u), "
"inode=%u, rec_len=%d, name_len=%d",
- error_msg, (unsigned) (offset%bh->b_size),
+ error_msg, (unsigned) (offset % bh->b_size),
offset, le32_to_cpu(de->inode),
rlen, de->name_len);
@@ -425,8 +425,9 @@ static int call_filldir(struct file *filp, void *dirent,
sb = inode->i_sb;
if (!fname) {
- printk(KERN_ERR "EXT4-fs: call_filldir: called with "
- "null fname?!?\n");
+ ext4_msg(sb, KERN_ERR, "%s:%d: inode #%lu: comm %s: "
+ "called with null fname?!?", __func__, __LINE__,
+ inode->i_ino, current->comm);
return 0;
}
curr_pos = hash2pos(fname->hash, fname->minor_hash);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 513004fc3d840ee03586a4fedcdb133d8031c642..ded731ac8a321d7408e38bafa03d079717fe47a0 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -53,7 +53,7 @@
printk(KERN_DEBUG f, ## a); \
} while (0)
#else
-#define ext4_debug(f, a...) do {} while (0)
+#define ext4_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
#endif
#define EXT4_ERROR_INODE(inode, fmt, a...) \
@@ -184,6 +184,8 @@ struct mpage_da_data {
#define EXT4_IO_END_UNWRITTEN 0x0001
#define EXT4_IO_END_ERROR 0x0002
#define EXT4_IO_END_QUEUED 0x0004
+#define EXT4_IO_END_DIRECT 0x0008
+#define EXT4_IO_END_IN_FSYNC 0x0010
struct ext4_io_page {
struct page *p_page;
@@ -192,18 +194,25 @@ struct ext4_io_page {
#define MAX_IO_PAGES 128
+/*
+ * For converting uninitialized extents on a work queue.
+ *
+ * 'page' is only used from the writepage() path; 'pages' is only used for
+ * buffered writes; they are used to keep page references until conversion
+ * takes place. For AIO/DIO, neither field is filled in.
+ */
typedef struct ext4_io_end {
struct list_head list; /* per-file finished IO list */
struct inode *inode; /* file being written to */
unsigned int flag; /* unwritten or not */
- struct page *page; /* page struct for buffer write */
+ struct page *page; /* for writepage() path */
loff_t offset; /* offset in the file */
ssize_t size; /* size of the extent */
struct work_struct work; /* data work queue */
struct kiocb *iocb; /* iocb struct for AIO */
int result; /* error value for AIO */
- int num_io_pages;
- struct ext4_io_page *pages[MAX_IO_PAGES];
+ int num_io_pages; /* for writepages() */
+ struct ext4_io_page *pages[MAX_IO_PAGES]; /* for writepages() */
} ext4_io_end_t;
struct ext4_io_submit {
@@ -923,6 +932,7 @@ struct ext4_inode_info {
#define EXT4_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
#define EXT4_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */
#define EXT4_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */
+#define EXT4_MOUNT_ERRORS_MASK 0x00070
#define EXT4_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */
#define EXT4_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/
#define EXT4_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */
@@ -941,7 +951,6 @@ struct ext4_inode_info {
#define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */
#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
-#define EXT4_MOUNT_I_VERSION 0x2000000 /* i_version support */
#define EXT4_MOUNT_MBLK_IO_SUBMIT 0x4000000 /* multi-block io submits */
#define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */
#define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */
@@ -1142,6 +1151,7 @@ struct ext4_sb_info {
unsigned int s_mount_opt;
unsigned int s_mount_opt2;
unsigned int s_mount_flags;
+ unsigned int s_def_mount_opt;
ext4_fsblk_t s_sb_block;
uid_t s_resuid;
gid_t s_resgid;
@@ -1420,8 +1430,9 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
#define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */
#define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */
-#define EXT4_FEATURE_INCOMPAT_INLINEDATA 0x2000 /* data in inode */
+#define EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM 0x2000 /* use crc32c for bg */
#define EXT4_FEATURE_INCOMPAT_LARGEDIR 0x4000 /* >2GB or 3-lvl htree */
+#define EXT4_FEATURE_INCOMPAT_INLINEDATA 0x8000 /* data in inode */
#define EXT2_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
@@ -1794,8 +1805,14 @@ extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb,
ext4_group_t block_group,
struct buffer_head ** bh);
extern int ext4_should_retry_alloc(struct super_block *sb, int *retries);
-struct buffer_head *ext4_read_block_bitmap(struct super_block *sb,
- ext4_group_t block_group);
+
+extern struct buffer_head *ext4_read_block_bitmap_nowait(struct super_block *sb,
+ ext4_group_t block_group);
+extern int ext4_wait_block_bitmap(struct super_block *sb,
+ ext4_group_t block_group,
+ struct buffer_head *bh);
+extern struct buffer_head *ext4_read_block_bitmap(struct super_block *sb,
+ ext4_group_t block_group);
extern void ext4_init_block_bitmap(struct super_block *sb,
struct buffer_head *bh,
ext4_group_t group,
@@ -1841,6 +1858,7 @@ extern void ext4_check_inodes_bitmap(struct super_block *);
extern void ext4_mark_bitmap_end(int start_bit, int end_bit, char *bitmap);
extern int ext4_init_inode_table(struct super_block *sb,
ext4_group_t group, int barrier);
+extern void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate);
/* mballoc.c */
extern long ext4_mb_stats;
diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h
index a52db3a69a30e88df3af4a5d56811985effe4dfd..0f58b86e3a0206e19626f361f453aa80b2838857 100644
--- a/fs/ext4/ext4_extents.h
+++ b/fs/ext4/ext4_extents.h
@@ -47,9 +47,9 @@
*/
#define EXT_DEBUG__
#ifdef EXT_DEBUG
-#define ext_debug(a...) printk(a)
+#define ext_debug(fmt, ...) printk(fmt, ##__VA_ARGS__)
#else
-#define ext_debug(a...)
+#define ext_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
#endif
/*
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 5802fa1dab18f4a8aac358bd79f3ae92109daf02..83b20fcf9400b11b28185470f8feef309faa8252 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -104,6 +104,78 @@
#define EXT4_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_INIT_BLOCKS(sb))
#define EXT4_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT4_QUOTA_DEL_BLOCKS(sb))
+/**
+ * struct ext4_journal_cb_entry - Base structure for callback information.
+ *
+ * This struct is a 'seed' structure for a using with your own callback
+ * structs. If you are using callbacks you must allocate one of these
+ * or another struct of your own definition which has this struct
+ * as it's first element and pass it to ext4_journal_callback_add().
+ */
+struct ext4_journal_cb_entry {
+ /* list information for other callbacks attached to the same handle */
+ struct list_head jce_list;
+
+ /* Function to call with this callback structure */
+ void (*jce_func)(struct super_block *sb,
+ struct ext4_journal_cb_entry *jce, int error);
+
+ /* user data goes here */
+};
+
+/**
+ * ext4_journal_callback_add: add a function to call after transaction commit
+ * @handle: active journal transaction handle to register callback on
+ * @func: callback function to call after the transaction has committed:
+ * @sb: superblock of current filesystem for transaction
+ * @jce: returned journal callback data
+ * @rc: journal state at commit (0 = transaction committed properly)
+ * @jce: journal callback data (internal and function private data struct)
+ *
+ * The registered function will be called in the context of the journal thread
+ * after the transaction for which the handle was created has completed.
+ *
+ * No locks are held when the callback function is called, so it is safe to
+ * call blocking functions from within the callback, but the callback should
+ * not block or run for too long, or the filesystem will be blocked waiting for
+ * the next transaction to commit. No journaling functions can be used, or
+ * there is a risk of deadlock.
+ *
+ * There is no guaranteed calling order of multiple registered callbacks on
+ * the same transaction.
+ */
+static inline void ext4_journal_callback_add(handle_t *handle,
+ void (*func)(struct super_block *sb,
+ struct ext4_journal_cb_entry *jce,
+ int rc),
+ struct ext4_journal_cb_entry *jce)
+{
+ struct ext4_sb_info *sbi =
+ EXT4_SB(handle->h_transaction->t_journal->j_private);
+
+ /* Add the jce to transaction's private list */
+ jce->jce_func = func;
+ spin_lock(&sbi->s_md_lock);
+ list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list);
+ spin_unlock(&sbi->s_md_lock);
+}
+
+/**
+ * ext4_journal_callback_del: delete a registered callback
+ * @handle: active journal transaction handle on which callback was registered
+ * @jce: registered journal callback entry to unregister
+ */
+static inline void ext4_journal_callback_del(handle_t *handle,
+ struct ext4_journal_cb_entry *jce)
+{
+ struct ext4_sb_info *sbi =
+ EXT4_SB(handle->h_transaction->t_journal->j_private);
+
+ spin_lock(&sbi->s_md_lock);
+ list_del_init(&jce->jce_list);
+ spin_unlock(&sbi->s_md_lock);
+}
+
int
ext4_mark_iloc_dirty(handle_t *handle,
struct inode *inode,
@@ -261,43 +333,45 @@ static inline void ext4_update_inode_fsync_trans(handle_t *handle,
/* super.c */
int ext4_force_commit(struct super_block *sb);
-static inline int ext4_should_journal_data(struct inode *inode)
+/*
+ * Ext4 inode journal modes
+ */
+#define EXT4_INODE_JOURNAL_DATA_MODE 0x01 /* journal data mode */
+#define EXT4_INODE_ORDERED_DATA_MODE 0x02 /* ordered data mode */
+#define EXT4_INODE_WRITEBACK_DATA_MODE 0x04 /* writeback data mode */
+
+static inline int ext4_inode_journal_mode(struct inode *inode)
{
if (EXT4_JOURNAL(inode) == NULL)
- return 0;
- if (!S_ISREG(inode->i_mode))
- return 1;
- if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
- return 1;
- if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
- return 1;
- return 0;
+ return EXT4_INODE_WRITEBACK_DATA_MODE; /* writeback */
+ /* We do not support data journalling with delayed allocation */
+ if (!S_ISREG(inode->i_mode) ||
+ test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
+ return EXT4_INODE_JOURNAL_DATA_MODE; /* journal data */
+ if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA) &&
+ !test_opt(inode->i_sb, DELALLOC))
+ return EXT4_INODE_JOURNAL_DATA_MODE; /* journal data */
+ if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
+ return EXT4_INODE_ORDERED_DATA_MODE; /* ordered */
+ if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
+ return EXT4_INODE_WRITEBACK_DATA_MODE; /* writeback */
+ else
+ BUG();
+}
+
+static inline int ext4_should_journal_data(struct inode *inode)
+{
+ return ext4_inode_journal_mode(inode) & EXT4_INODE_JOURNAL_DATA_MODE;
}
static inline int ext4_should_order_data(struct inode *inode)
{
- if (EXT4_JOURNAL(inode) == NULL)
- return 0;
- if (!S_ISREG(inode->i_mode))
- return 0;
- if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
- return 0;
- if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
- return 1;
- return 0;
+ return ext4_inode_journal_mode(inode) & EXT4_INODE_ORDERED_DATA_MODE;
}
static inline int ext4_should_writeback_data(struct inode *inode)
{
- if (EXT4_JOURNAL(inode) == NULL)
- return 1;
- if (!S_ISREG(inode->i_mode))
- return 0;
- if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
- return 0;
- if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
- return 1;
- return 0;
+ return ext4_inode_journal_mode(inode) & EXT4_INODE_WRITEBACK_DATA_MODE;
}
/*
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 74f23c292e1b3000bb7bd9cf0e953df27488b698..1421938e6792a4f5426cbd8f4d218eea4f2192f9 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -44,6 +44,14 @@
#include <trace/events/ext4.h>
+/*
+ * used by extent splitting.
+ */
+#define EXT4_EXT_MAY_ZEROOUT 0x1 /* safe to zeroout if split fails \
+ due to ENOSPC */
+#define EXT4_EXT_MARK_UNINIT1 0x2 /* mark first half uninitialized */
+#define EXT4_EXT_MARK_UNINIT2 0x4 /* mark second half uninitialized */
+
static int ext4_split_extent(handle_t *handle,
struct inode *inode,
struct ext4_ext_path *path,
@@ -51,6 +59,13 @@ static int ext4_split_extent(handle_t *handle,
int split_flag,
int flags);
+static int ext4_split_extent_at(handle_t *handle,
+ struct inode *inode,
+ struct ext4_ext_path *path,
+ ext4_lblk_t split,
+ int split_flag,
+ int flags);
+
static int ext4_ext_truncate_extend_restart(handle_t *handle,
struct inode *inode,
int needed)
@@ -300,6 +315,8 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
ext4_fsblk_t block = ext4_ext_pblock(ext);
int len = ext4_ext_get_actual_len(ext);
+ if (len == 0)
+ return 0;
return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len);
}
@@ -2308,7 +2325,7 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
struct ext4_extent *ex;
/* the header must be checked already in ext4_ext_remove_space() */
- ext_debug("truncate since %u in leaf\n", start);
+ ext_debug("truncate since %u in leaf to %u\n", start, end);
if (!path[depth].p_hdr)
path[depth].p_hdr = ext_block_hdr(path[depth].p_bh);
eh = path[depth].p_hdr;
@@ -2343,14 +2360,17 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
ext_debug(" border %u:%u\n", a, b);
/* If this extent is beyond the end of the hole, skip it */
- if (end <= ex_ee_block) {
+ if (end < ex_ee_block) {
ex--;
ex_ee_block = le32_to_cpu(ex->ee_block);
ex_ee_len = ext4_ext_get_actual_len(ex);
continue;
} else if (b != ex_ee_block + ex_ee_len - 1) {
- EXT4_ERROR_INODE(inode," bad truncate %u:%u\n",
- start, end);
+ EXT4_ERROR_INODE(inode,
+ "can not handle truncate %u:%u "
+ "on extent %u:%u",
+ start, end, ex_ee_block,
+ ex_ee_block + ex_ee_len - 1);
err = -EIO;
goto out;
} else if (a != ex_ee_block) {
@@ -2482,7 +2502,8 @@ ext4_ext_more_to_rm(struct ext4_ext_path *path)
return 1;
}
-static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
+static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start,
+ ext4_lblk_t end)
{
struct super_block *sb = inode->i_sb;
int depth = ext_depth(inode);
@@ -2491,7 +2512,7 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
handle_t *handle;
int i, err;
- ext_debug("truncate since %u\n", start);
+ ext_debug("truncate since %u to %u\n", start, end);
/* probably first extent we're gonna free will be last in block */
handle = ext4_journal_start(inode, depth + 1);
@@ -2503,6 +2524,61 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
trace_ext4_ext_remove_space(inode, start, depth);
+ /*
+ * Check if we are removing extents inside the extent tree. If that
+ * is the case, we are going to punch a hole inside the extent tree
+ * so we have to check whether we need to split the extent covering
+ * the last block to remove so we can easily remove the part of it
+ * in ext4_ext_rm_leaf().
+ */
+ if (end < EXT_MAX_BLOCKS - 1) {
+ struct ext4_extent *ex;
+ ext4_lblk_t ee_block;
+
+ /* find extent for this block */
+ path = ext4_ext_find_extent(inode, end, NULL);
+ if (IS_ERR(path)) {
+ ext4_journal_stop(handle);
+ return PTR_ERR(path);
+ }
+ depth = ext_depth(inode);
+ ex = path[depth].p_ext;
+ if (!ex)
+ goto cont;
+
+ ee_block = le32_to_cpu(ex->ee_block);
+
+ /*
+ * See if the last block is inside the extent, if so split
+ * the extent at 'end' block so we can easily remove the
+ * tail of the first part of the split extent in
+ * ext4_ext_rm_leaf().
+ */
+ if (end >= ee_block &&
+ end < ee_block + ext4_ext_get_actual_len(ex) - 1) {
+ int split_flag = 0;
+
+ if (ext4_ext_is_uninitialized(ex))
+ split_flag = EXT4_EXT_MARK_UNINIT1 |
+ EXT4_EXT_MARK_UNINIT2;
+
+ /*
+ * Split the extent in two so that 'end' is the last
+ * block in the first new extent
+ */
+ err = ext4_split_extent_at(handle, inode, path,
+ end + 1, split_flag,
+ EXT4_GET_BLOCKS_PRE_IO |
+ EXT4_GET_BLOCKS_PUNCH_OUT_EXT);
+
+ if (err < 0)
+ goto out;
+ }
+ ext4_ext_drop_refs(path);
+ kfree(path);
+ }
+cont:
+
/*
* We start scanning from right side, freeing all the blocks
* after i_size and walking into the tree depth-wise.
@@ -2515,6 +2591,7 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
}
path[0].p_depth = depth;
path[0].p_hdr = ext_inode_hdr(inode);
+
if (ext4_ext_check(inode, path[0].p_hdr, depth)) {
err = -EIO;
goto out;
@@ -2526,7 +2603,7 @@ static int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
/* this is leaf block */
err = ext4_ext_rm_leaf(handle, inode, path,
&partial_cluster, start,
- EXT_MAX_BLOCKS - 1);
+ end);
/* root level has p_bh == NULL, brelse() eats this */
brelse(path[i].p_bh);
path[i].p_bh = NULL;
@@ -2651,17 +2728,17 @@ void ext4_ext_init(struct super_block *sb)
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
#if defined(AGGRESSIVE_TEST) || defined(CHECK_BINSEARCH) || defined(EXTENTS_STATS)
- printk(KERN_INFO "EXT4-fs: file extents enabled");
+ printk(KERN_INFO "EXT4-fs: file extents enabled"
#ifdef AGGRESSIVE_TEST
- printk(", aggressive tests");
+ ", aggressive tests"
#endif
#ifdef CHECK_BINSEARCH
- printk(", check binsearch");
+ ", check binsearch"
#endif
#ifdef EXTENTS_STATS
- printk(", stats");
+ ", stats"
#endif
- printk("\n");
+ "\n");
#endif
#ifdef EXTENTS_STATS
spin_lock_init(&EXT4_SB(sb)->s_ext_stats_lock);
@@ -2708,14 +2785,6 @@ static int ext4_ext_zeroout(struct inode *inode, struct ext4_extent *ex)
return ret;
}
-/*
- * used by extent splitting.
- */
-#define EXT4_EXT_MAY_ZEROOUT 0x1 /* safe to zeroout if split fails \
- due to ENOSPC */
-#define EXT4_EXT_MARK_UNINIT1 0x2 /* mark first half uninitialized */
-#define EXT4_EXT_MARK_UNINIT2 0x4 /* mark second half uninitialized */
-
/*
* ext4_split_extent_at() splits an extent at given block.
*
@@ -3224,11 +3293,13 @@ static int check_eofblocks_fl(handle_t *handle, struct inode *inode,
depth = ext_depth(inode);
eh = path[depth].p_hdr;
- if (unlikely(!eh->eh_entries)) {
- EXT4_ERROR_INODE(inode, "eh->eh_entries == 0 and "
- "EOFBLOCKS_FL set");
- return -EIO;
- }
+ /*
+ * We're going to remove EOFBLOCKS_FL entirely in future so we
+ * do not care for this case anymore. Simply remove the flag
+ * if there are no extents.
+ */
+ if (unlikely(!eh->eh_entries))
+ goto out;
last_ex = EXT_LAST_EXTENT(eh);
/*
* We should clear the EOFBLOCKS_FL flag if we are writing the
@@ -3252,6 +3323,7 @@ static int check_eofblocks_fl(handle_t *handle, struct inode *inode,
for (i = depth-1; i >= 0; i--)
if (path[i].p_idx != EXT_LAST_INDEX(path[i].p_hdr))
return 0;
+out:
ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
return ext4_mark_inode_dirty(handle, inode);
}
@@ -3710,8 +3782,6 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
int free_on_err = 0, err = 0, depth, ret;
unsigned int allocated = 0, offset = 0;
unsigned int allocated_clusters = 0;
- unsigned int punched_out = 0;
- unsigned int result = 0;
struct ext4_allocation_request ar;
ext4_io_end_t *io = EXT4_I(inode)->cur_aio_dio;
ext4_lblk_t cluster_offset;
@@ -3721,8 +3791,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags);
/* check in cache */
- if (!(flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) &&
- ext4_ext_in_cache(inode, map->m_lblk, &newex)) {
+ if (ext4_ext_in_cache(inode, map->m_lblk, &newex)) {
if (!newex.ee_start_lo && !newex.ee_start_hi) {
if ((sbi->s_cluster_ratio > 1) &&
ext4_find_delalloc_cluster(inode, map->m_lblk, 0))
@@ -3790,113 +3859,25 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
/* if found extent covers block, simply return it */
if (in_range(map->m_lblk, ee_block, ee_len)) {
- struct ext4_map_blocks punch_map;
- ext4_fsblk_t partial_cluster = 0;
-
newblock = map->m_lblk - ee_block + ee_start;
/* number of remaining blocks in the extent */
allocated = ee_len - (map->m_lblk - ee_block);
ext_debug("%u fit into %u:%d -> %llu\n", map->m_lblk,
ee_block, ee_len, newblock);
- if ((flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) == 0) {
- /*
- * Do not put uninitialized extent
- * in the cache
- */
- if (!ext4_ext_is_uninitialized(ex)) {
- ext4_ext_put_in_cache(inode, ee_block,
- ee_len, ee_start);
- goto out;
- }
- ret = ext4_ext_handle_uninitialized_extents(
- handle, inode, map, path, flags,
- allocated, newblock);
- return ret;
- }
-
- /*
- * Punch out the map length, but only to the
- * end of the extent
- */
- punched_out = allocated < map->m_len ?
- allocated : map->m_len;
-
/*
- * Sense extents need to be converted to
- * uninitialized, they must fit in an
- * uninitialized extent
+ * Do not put uninitialized extent
+ * in the cache
*/
- if (punched_out > EXT_UNINIT_MAX_LEN)
- punched_out = EXT_UNINIT_MAX_LEN;
-
- punch_map.m_lblk = map->m_lblk;
- punch_map.m_pblk = newblock;
- punch_map.m_len = punched_out;
- punch_map.m_flags = 0;
-
- /* Check to see if the extent needs to be split */
- if (punch_map.m_len != ee_len ||
- punch_map.m_lblk != ee_block) {
-
- ret = ext4_split_extent(handle, inode,
- path, &punch_map, 0,
- EXT4_GET_BLOCKS_PUNCH_OUT_EXT |
- EXT4_GET_BLOCKS_PRE_IO);
-
- if (ret < 0) {
- err = ret;
- goto out2;
- }
- /*
- * find extent for the block at
- * the start of the hole
- */
- ext4_ext_drop_refs(path);
- kfree(path);
-
- path = ext4_ext_find_extent(inode,
- map->m_lblk, NULL);
- if (IS_ERR(path)) {
- err = PTR_ERR(path);
- path = NULL;
- goto out2;
- }
-
- depth = ext_depth(inode);
- ex = path[depth].p_ext;
- ee_len = ext4_ext_get_actual_len(ex);
- ee_block = le32_to_cpu(ex->ee_block);
- ee_start = ext4_ext_pblock(ex);
-
- }
-
- ext4_ext_mark_uninitialized(ex);
-
- ext4_ext_invalidate_cache(inode);
-
- err = ext4_ext_rm_leaf(handle, inode, path,
- &partial_cluster, map->m_lblk,
- map->m_lblk + punched_out);
-
- if (!err && path->p_hdr->eh_entries == 0) {
- /*
- * Punch hole freed all of this sub tree,
- * so we need to correct eh_depth
- */
- err = ext4_ext_get_access(handle, inode, path);
- if (err == 0) {
- ext_inode_hdr(inode)->eh_depth = 0;
- ext_inode_hdr(inode)->eh_max =
- cpu_to_le16(ext4_ext_space_root(
- inode, 0));
-
- err = ext4_ext_dirty(
- handle, inode, path);
- }
+ if (!ext4_ext_is_uninitialized(ex)) {
+ ext4_ext_put_in_cache(inode, ee_block,
+ ee_len, ee_start);
+ goto out;
}
-
- goto out2;
+ ret = ext4_ext_handle_uninitialized_extents(
+ handle, inode, map, path, flags,
+ allocated, newblock);
+ return ret;
}
}
@@ -4165,13 +4146,11 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
ext4_ext_drop_refs(path);
kfree(path);
}
- result = (flags & EXT4_GET_BLOCKS_PUNCH_OUT_EXT) ?
- punched_out : allocated;
trace_ext4_ext_map_blocks_exit(inode, map->m_lblk,
- newblock, map->m_len, err ? err : result);
+ newblock, map->m_len, err ? err : allocated);
- return err ? err : result;
+ return err ? err : allocated;
}
void ext4_ext_truncate(struct inode *inode)
@@ -4228,7 +4207,7 @@ void ext4_ext_truncate(struct inode *inode)
last_block = (inode->i_size + sb->s_blocksize - 1)
>> EXT4_BLOCK_SIZE_BITS(sb);
- err = ext4_ext_remove_space(inode, last_block);
+ err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1);
/* In a multi-transaction truncate, we only make the final
* transaction synchronous.
@@ -4436,10 +4415,11 @@ int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
EXT4_GET_BLOCKS_IO_CONVERT_EXT);
if (ret <= 0) {
WARN_ON(ret <= 0);
- printk(KERN_ERR "%s: ext4_ext_map_blocks "
- "returned error inode#%lu, block=%u, "
- "max_blocks=%u", __func__,
- inode->i_ino, map.m_lblk, map.m_len);
+ ext4_msg(inode->i_sb, KERN_ERR,
+ "%s:%d: inode #%lu: block %u: len %u: "
+ "ext4_ext_map_blocks returned %d",
+ __func__, __LINE__, inode->i_ino, map.m_lblk,
+ map.m_len, ret);
}
ext4_mark_inode_dirty(handle, inode);
ret2 = ext4_journal_stop(handle);
@@ -4705,14 +4685,12 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
{
struct inode *inode = file->f_path.dentry->d_inode;
struct super_block *sb = inode->i_sb;
- struct ext4_ext_cache cache_ex;
- ext4_lblk_t first_block, last_block, num_blocks, iblock, max_blocks;
+ ext4_lblk_t first_block, stop_block;
struct address_space *mapping = inode->i_mapping;
- struct ext4_map_blocks map;
handle_t *handle;
loff_t first_page, last_page, page_len;
loff_t first_page_offset, last_page_offset;
- int ret, credits, blocks_released, err = 0;
+ int credits, err = 0;
/* No need to punch hole beyond i_size */
if (offset >= inode->i_size)
@@ -4728,10 +4706,6 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
offset;
}
- first_block = (offset + sb->s_blocksize - 1) >>
- EXT4_BLOCK_SIZE_BITS(sb);
- last_block = (offset + length) >> EXT4_BLOCK_SIZE_BITS(sb);
-
first_page = (offset + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
last_page = (offset + length) >> PAGE_CACHE_SHIFT;
@@ -4810,7 +4784,6 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
}
}
-
/*
* If i_size is contained in the last page, we need to
* unmap and zero the partial page after i_size
@@ -4830,73 +4803,22 @@ int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
}
}
+ first_block = (offset + sb->s_blocksize - 1) >>
+ EXT4_BLOCK_SIZE_BITS(sb);
+ stop_block = (offset + length) >> EXT4_BLOCK_SIZE_BITS(sb);
+
/* If there are no blocks to remove, return now */
- if (first_block >= last_block)
+ if (first_block >= stop_block)
goto out;
down_write(&EXT4_I(inode)->i_data_sem);
ext4_ext_invalidate_cache(inode);
ext4_discard_preallocations(inode);
- /*
- * Loop over all the blocks and identify blocks
- * that need to be punched out
- */
- iblock = first_block;
- blocks_released = 0;
- while (iblock < last_block) {
- max_blocks = last_block - iblock;
- num_blocks = 1;
- memset(&map, 0, sizeof(map));
- map.m_lblk = iblock;
- map.m_len = max_blocks;
- ret = ext4_ext_map_blocks(handle, inode, &map,
- EXT4_GET_BLOCKS_PUNCH_OUT_EXT);
-
- if (ret > 0) {
- blocks_released += ret;
- num_blocks = ret;
- } else if (ret == 0) {
- /*
- * If map blocks could not find the block,
- * then it is in a hole. If the hole was
- * not already cached, then map blocks should
- * put it in the cache. So we can get the hole
- * out of the cache
- */
- memset(&cache_ex, 0, sizeof(cache_ex));
- if ((ext4_ext_check_cache(inode, iblock, &cache_ex)) &&
- !cache_ex.ec_start) {
-
- /* The hole is cached */
- num_blocks = cache_ex.ec_block +
- cache_ex.ec_len - iblock;
-
- } else {
- /* The block could not be identified */
- err = -EIO;
- break;
- }
- } else {
- /* Map blocks error */
- err = ret;
- break;
- }
-
- if (num_blocks == 0) {
- /* This condition should never happen */
- ext_debug("Block lookup failed");
- err = -EIO;
- break;
- }
-
- iblock += num_blocks;
- }
+ err = ext4_ext_remove_space(inode, first_block, stop_block - 1);
- if (blocks_released > 0) {
- ext4_ext_invalidate_cache(inode);
- ext4_discard_preallocations(inode);
- }
+ ext4_ext_invalidate_cache(inode);
+ ext4_discard_preallocations(inode);
if (IS_SYNC(inode))
ext4_handle_sync(handle);
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 00a2cb753efdeca63d6bbba4912729dc1c854182..bb6c7d8113134ee7796a141065d9ed602650f10e 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -89,6 +89,7 @@ int ext4_flush_completed_IO(struct inode *inode)
io = list_entry(ei->i_completed_io_list.next,
ext4_io_end_t, list);
list_del_init(&io->list);
+ io->flag |= EXT4_IO_END_IN_FSYNC;
/*
* Calling ext4_end_io_nolock() to convert completed
* IO to written.
@@ -108,6 +109,7 @@ int ext4_flush_completed_IO(struct inode *inode)
if (ret < 0)
ret2 = ret;
spin_lock_irqsave(&ei->i_completed_io_lock, flags);
+ io->flag &= ~EXT4_IO_END_IN_FSYNC;
}
spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
return (ret2 < 0) ? ret2 : 0;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 25d8c9781ad94ea758781f906a34412743b3cda0..409c2ee7750aabb73ce3a2cae44ca9695df53053 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -92,6 +92,16 @@ static unsigned ext4_init_inode_bitmap(struct super_block *sb,
return EXT4_INODES_PER_GROUP(sb);
}
+void ext4_end_bitmap_read(struct buffer_head *bh, int uptodate)
+{
+ if (uptodate) {
+ set_buffer_uptodate(bh);
+ set_bitmap_uptodate(bh);
+ }
+ unlock_buffer(bh);
+ put_bh(bh);
+}
+
/*
* Read the inode allocation bitmap for a given block_group, reading
* into the specified slot in the superblock's bitmap cache.
@@ -147,18 +157,18 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
return bh;
}
/*
- * submit the buffer_head for read. We can
- * safely mark the bitmap as uptodate now.
- * We do it here so the bitmap uptodate bit
- * get set with buffer lock held.
+ * submit the buffer_head for reading
*/
trace_ext4_load_inode_bitmap(sb, block_group);
- set_bitmap_uptodate(bh);
- if (bh_submit_read(bh) < 0) {
+ bh->b_end_io = ext4_end_bitmap_read;
+ get_bh(bh);
+ submit_bh(READ, bh);
+ wait_on_buffer(bh);
+ if (!buffer_uptodate(bh)) {
put_bh(bh);
ext4_error(sb, "Cannot read inode bitmap - "
- "block_group = %u, inode_bitmap = %llu",
- block_group, bitmap_blk);
+ "block_group = %u, inode_bitmap = %llu",
+ block_group, bitmap_blk);
return NULL;
}
return bh;
@@ -194,19 +204,20 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
struct ext4_sb_info *sbi;
int fatal = 0, err, count, cleared;
- if (atomic_read(&inode->i_count) > 1) {
- printk(KERN_ERR "ext4_free_inode: inode has count=%d\n",
- atomic_read(&inode->i_count));
+ if (!sb) {
+ printk(KERN_ERR "EXT4-fs: %s:%d: inode on "
+ "nonexistent device\n", __func__, __LINE__);
return;
}
- if (inode->i_nlink) {
- printk(KERN_ERR "ext4_free_inode: inode has nlink=%d\n",
- inode->i_nlink);
+ if (atomic_read(&inode->i_count) > 1) {
+ ext4_msg(sb, KERN_ERR, "%s:%d: inode #%lu: count=%d",
+ __func__, __LINE__, inode->i_ino,
+ atomic_read(&inode->i_count));
return;
}
- if (!sb) {
- printk(KERN_ERR "ext4_free_inode: inode on "
- "nonexistent device\n");
+ if (inode->i_nlink) {
+ ext4_msg(sb, KERN_ERR, "%s:%d: inode #%lu: nlink=%d\n",
+ __func__, __LINE__, inode->i_ino, inode->i_nlink);
return;
}
sbi = EXT4_SB(sb);
@@ -592,94 +603,6 @@ static int find_group_other(struct super_block *sb, struct inode *parent,
return -1;
}
-/*
- * claim the inode from the inode bitmap. If the group
- * is uninit we need to take the groups's ext4_group_lock
- * and clear the uninit flag. The inode bitmap update
- * and group desc uninit flag clear should be done
- * after holding ext4_group_lock so that ext4_read_inode_bitmap
- * doesn't race with the ext4_claim_inode
- */
-static int ext4_claim_inode(struct super_block *sb,
- struct buffer_head *inode_bitmap_bh,
- unsigned long ino, ext4_group_t group, umode_t mode)
-{
- int free = 0, retval = 0, count;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- struct ext4_group_info *grp = ext4_get_group_info(sb, group);
- struct ext4_group_desc *gdp = ext4_get_group_desc(sb, group, NULL);
-
- /*
- * We have to be sure that new inode allocation does not race with
- * inode table initialization, because otherwise we may end up
- * allocating and writing new inode right before sb_issue_zeroout
- * takes place and overwriting our new inode with zeroes. So we
- * take alloc_sem to prevent it.
- */
- down_read(&grp->alloc_sem);
- ext4_lock_group(sb, group);
- if (ext4_test_and_set_bit(ino, inode_bitmap_bh->b_data)) {
- /* not a free inode */
- retval = 1;
- goto err_ret;
- }
- ino++;
- if ((group == 0 && ino < EXT4_FIRST_INO(sb)) ||
- ino > EXT4_INODES_PER_GROUP(sb)) {
- ext4_unlock_group(sb, group);
- up_read(&grp->alloc_sem);
- ext4_error(sb, "reserved inode or inode > inodes count - "
- "block_group = %u, inode=%lu", group,
- ino + group * EXT4_INODES_PER_GROUP(sb));
- return 1;
- }
- /* If we didn't allocate from within the initialized part of the inode
- * table then we need to initialize up to this inode. */
- if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
-
- if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
- gdp->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT);
- /* When marking the block group with
- * ~EXT4_BG_INODE_UNINIT we don't want to depend
- * on the value of bg_itable_unused even though
- * mke2fs could have initialized the same for us.
- * Instead we calculated the value below
- */
-
- free = 0;
- } else {
- free = EXT4_INODES_PER_GROUP(sb) -
- ext4_itable_unused_count(sb, gdp);
- }
-
- /*
- * Check the relative inode number against the last used
- * relative inode number in this group. if it is greater
- * we need to update the bg_itable_unused count
- *
- */
- if (ino > free)
- ext4_itable_unused_set(sb, gdp,
- (EXT4_INODES_PER_GROUP(sb) - ino));
- }
- count = ext4_free_inodes_count(sb, gdp) - 1;
- ext4_free_inodes_set(sb, gdp, count);
- if (S_ISDIR(mode)) {
- count = ext4_used_dirs_count(sb, gdp) + 1;
- ext4_used_dirs_set(sb, gdp, count);
- if (sbi->s_log_groups_per_flex) {
- ext4_group_t f = ext4_flex_group(sbi, group);
-
- atomic_inc(&sbi->s_flex_groups[f].used_dirs);
- }
- }
- gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp);
-err_ret:
- ext4_unlock_group(sb, group);
- up_read(&grp->alloc_sem);
- return retval;
-}
-
/*
* There are two policies for allocating an inode. If the new inode is
* a directory, then a forward search is made for a block group with both
@@ -741,6 +664,11 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, umode_t mode,
if (ret2 == -1)
goto out;
+ /*
+ * Normally we will only go through one pass of this loop,
+ * unless we get unlucky and it turns out the group we selected
+ * had its last inode grabbed by someone else.
+ */
for (i = 0; i < ngroups; i++, ino = 0) {
err = -EIO;
@@ -757,51 +685,24 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, umode_t mode,
ino = ext4_find_next_zero_bit((unsigned long *)
inode_bitmap_bh->b_data,
EXT4_INODES_PER_GROUP(sb), ino);
-
- if (ino < EXT4_INODES_PER_GROUP(sb)) {
-
- BUFFER_TRACE(inode_bitmap_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle,
- inode_bitmap_bh);
- if (err)
- goto fail;
-
- BUFFER_TRACE(group_desc_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle,
- group_desc_bh);
- if (err)
- goto fail;
- if (!ext4_claim_inode(sb, inode_bitmap_bh,
- ino, group, mode)) {
- /* we won it */
- BUFFER_TRACE(inode_bitmap_bh,
- "call ext4_handle_dirty_metadata");
- err = ext4_handle_dirty_metadata(handle,
- NULL,
- inode_bitmap_bh);
- if (err)
- goto fail;
- /* zero bit is inode number 1*/
- ino++;
- goto got;
- }
- /* we lost it */
- ext4_handle_release_buffer(handle, inode_bitmap_bh);
- ext4_handle_release_buffer(handle, group_desc_bh);
-
- if (++ino < EXT4_INODES_PER_GROUP(sb))
- goto repeat_in_this_group;
+ if (ino >= EXT4_INODES_PER_GROUP(sb)) {
+ if (++group == ngroups)
+ group = 0;
+ continue;
}
-
- /*
- * This case is possible in concurrent environment. It is very
- * rare. We cannot repeat the find_group_xxx() call because
- * that will simply return the same blockgroup, because the
- * group descriptor metadata has not yet been updated.
- * So we just go onto the next blockgroup.
- */
- if (++group == ngroups)
- group = 0;
+ if (group == 0 && (ino+1) < EXT4_FIRST_INO(sb)) {
+ ext4_error(sb, "reserved inode found cleared - "
+ "inode=%lu", ino + 1);
+ continue;
+ }
+ ext4_lock_group(sb, group);
+ ret2 = ext4_test_and_set_bit(ino, inode_bitmap_bh->b_data);
+ ext4_unlock_group(sb, group);
+ ino++; /* the inode bitmap is zero-based */
+ if (!ret2)
+ goto got; /* we grabbed the inode! */
+ if (ino < EXT4_INODES_PER_GROUP(sb))
+ goto repeat_in_this_group;
}
err = -ENOSPC;
goto out;
@@ -838,6 +739,59 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, umode_t mode,
if (err)
goto fail;
}
+
+ BUFFER_TRACE(inode_bitmap_bh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, inode_bitmap_bh);
+ if (err)
+ goto fail;
+
+ BUFFER_TRACE(group_desc_bh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, group_desc_bh);
+ if (err)
+ goto fail;
+
+ /* Update the relevant bg descriptor fields */
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ int free;
+ struct ext4_group_info *grp = ext4_get_group_info(sb, group);
+
+ down_read(&grp->alloc_sem); /* protect vs itable lazyinit */
+ ext4_lock_group(sb, group); /* while we modify the bg desc */
+ free = EXT4_INODES_PER_GROUP(sb) -
+ ext4_itable_unused_count(sb, gdp);
+ if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
+ gdp->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT);
+ free = 0;
+ }
+ /*
+ * Check the relative inode number against the last used
+ * relative inode number in this group. if it is greater
+ * we need to update the bg_itable_unused count
+ */
+ if (ino > free)
+ ext4_itable_unused_set(sb, gdp,
+ (EXT4_INODES_PER_GROUP(sb) - ino));
+ up_read(&grp->alloc_sem);
+ }
+ ext4_free_inodes_set(sb, gdp, ext4_free_inodes_count(sb, gdp) - 1);
+ if (S_ISDIR(mode)) {
+ ext4_used_dirs_set(sb, gdp, ext4_used_dirs_count(sb, gdp) + 1);
+ if (sbi->s_log_groups_per_flex) {
+ ext4_group_t f = ext4_flex_group(sbi, group);
+
+ atomic_inc(&sbi->s_flex_groups[f].used_dirs);
+ }
+ }
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ gdp->bg_checksum = ext4_group_desc_csum(sbi, group, gdp);
+ ext4_unlock_group(sb, group);
+ }
+
+ BUFFER_TRACE(inode_bitmap_bh, "call ext4_handle_dirty_metadata");
+ err = ext4_handle_dirty_metadata(handle, NULL, inode_bitmap_bh);
+ if (err)
+ goto fail;
+
BUFFER_TRACE(group_desc_bh, "call ext4_handle_dirty_metadata");
err = ext4_handle_dirty_metadata(handle, NULL, group_desc_bh);
if (err)
@@ -1101,7 +1055,7 @@ unsigned long ext4_count_dirs(struct super_block * sb)
* where it is called from on active part of filesystem is ext4lazyinit
* thread, so we do not need any special locks, however we have to prevent
* inode allocation from the current group, so we take alloc_sem lock, to
- * block ext4_claim_inode until we are finished.
+ * block ext4_new_inode() until we are finished.
*/
int ext4_init_inode_table(struct super_block *sb, ext4_group_t group,
int barrier)
@@ -1149,9 +1103,9 @@ int ext4_init_inode_table(struct super_block *sb, ext4_group_t group,
sbi->s_inodes_per_block);
if ((used_blks < 0) || (used_blks > sbi->s_itb_per_group)) {
- ext4_error(sb, "Something is wrong with group %u\n"
- "Used itable blocks: %d"
- "itable unused count: %u\n",
+ ext4_error(sb, "Something is wrong with group %u: "
+ "used itable blocks: %d; "
+ "itable unused count: %u",
group, used_blks,
ext4_itable_unused_count(sb, gdp));
ret = 1;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index feaa82fe629d067e0900744fcbb50da2768b0183..c77b0bd2c7110975476b7f6312ddde7da515ca7a 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -272,7 +272,7 @@ void ext4_da_update_reserve_space(struct inode *inode,
trace_ext4_da_update_reserve_space(inode, used, quota_claim);
if (unlikely(used > ei->i_reserved_data_blocks)) {
ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d "
- "with only %d reserved data blocks\n",
+ "with only %d reserved data blocks",
__func__, inode->i_ino, used,
ei->i_reserved_data_blocks);
WARN_ON(1);
@@ -1165,7 +1165,7 @@ static void ext4_da_release_space(struct inode *inode, int to_free)
*/
ext4_msg(inode->i_sb, KERN_NOTICE, "ext4_da_release_space: "
"ino %lu, to_free %d with only %d reserved "
- "data blocks\n", inode->i_ino, to_free,
+ "data blocks", inode->i_ino, to_free,
ei->i_reserved_data_blocks);
WARN_ON(1);
to_free = ei->i_reserved_data_blocks;
@@ -1428,20 +1428,22 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
static void ext4_print_free_blocks(struct inode *inode)
{
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- printk(KERN_CRIT "Total free blocks count %lld\n",
+ struct super_block *sb = inode->i_sb;
+
+ ext4_msg(sb, KERN_CRIT, "Total free blocks count %lld",
EXT4_C2B(EXT4_SB(inode->i_sb),
ext4_count_free_clusters(inode->i_sb)));
- printk(KERN_CRIT "Free/Dirty block details\n");
- printk(KERN_CRIT "free_blocks=%lld\n",
+ ext4_msg(sb, KERN_CRIT, "Free/Dirty block details");
+ ext4_msg(sb, KERN_CRIT, "free_blocks=%lld",
(long long) EXT4_C2B(EXT4_SB(inode->i_sb),
percpu_counter_sum(&sbi->s_freeclusters_counter)));
- printk(KERN_CRIT "dirty_blocks=%lld\n",
+ ext4_msg(sb, KERN_CRIT, "dirty_blocks=%lld",
(long long) EXT4_C2B(EXT4_SB(inode->i_sb),
percpu_counter_sum(&sbi->s_dirtyclusters_counter)));
- printk(KERN_CRIT "Block reservation details\n");
- printk(KERN_CRIT "i_reserved_data_blocks=%u\n",
- EXT4_I(inode)->i_reserved_data_blocks);
- printk(KERN_CRIT "i_reserved_meta_blocks=%u\n",
+ ext4_msg(sb, KERN_CRIT, "Block reservation details");
+ ext4_msg(sb, KERN_CRIT, "i_reserved_data_blocks=%u",
+ EXT4_I(inode)->i_reserved_data_blocks);
+ ext4_msg(sb, KERN_CRIT, "i_reserved_meta_blocks=%u",
EXT4_I(inode)->i_reserved_meta_blocks);
return;
}
@@ -2482,13 +2484,14 @@ static int ext4_da_write_end(struct file *file,
int write_mode = (int)(unsigned long)fsdata;
if (write_mode == FALL_BACK_TO_NONDELALLOC) {
- if (ext4_should_order_data(inode)) {
+ switch (ext4_inode_journal_mode(inode)) {
+ case EXT4_INODE_ORDERED_DATA_MODE:
return ext4_ordered_write_end(file, mapping, pos,
len, copied, page, fsdata);
- } else if (ext4_should_writeback_data(inode)) {
+ case EXT4_INODE_WRITEBACK_DATA_MODE:
return ext4_writeback_write_end(file, mapping, pos,
len, copied, page, fsdata);
- } else {
+ default:
BUG();
}
}
@@ -2763,7 +2766,7 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
goto out;
ext_debug("ext4_end_io_dio(): io_end 0x%p "
- "for inode %lu, iocb 0x%p, offset %llu, size %llu\n",
+ "for inode %lu, iocb 0x%p, offset %llu, size %zd\n",
iocb->private, io_end->inode->i_ino, iocb, offset,
size);
@@ -2795,9 +2798,6 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
/* queue the work to convert unwritten extents to written */
queue_work(wq, &io_end->work);
-
- /* XXX: probably should move into the real I/O completion handler */
- inode_dio_done(inode);
}
static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
@@ -2811,8 +2811,9 @@ static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
goto out;
if (!(io_end->inode->i_sb->s_flags & MS_ACTIVE)) {
- printk("sb umounted, discard end_io request for inode %lu\n",
- io_end->inode->i_ino);
+ ext4_msg(io_end->inode->i_sb, KERN_INFO,
+ "sb umounted, discard end_io request for inode %lu",
+ io_end->inode->i_ino);
ext4_free_io_end(io_end);
goto out;
}
@@ -2921,9 +2922,12 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
iocb->private = NULL;
EXT4_I(inode)->cur_aio_dio = NULL;
if (!is_sync_kiocb(iocb)) {
- iocb->private = ext4_init_io_end(inode, GFP_NOFS);
- if (!iocb->private)
+ ext4_io_end_t *io_end =
+ ext4_init_io_end(inode, GFP_NOFS);
+ if (!io_end)
return -ENOMEM;
+ io_end->flag |= EXT4_IO_END_DIRECT;
+ iocb->private = io_end;
/*
* we save the io structure for current async
* direct IO, so that later ext4_map_blocks()
@@ -2940,7 +2944,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
ext4_get_block_write,
ext4_end_io_dio,
NULL,
- DIO_LOCKING | DIO_SKIP_HOLES);
+ DIO_LOCKING);
if (iocb->private)
EXT4_I(inode)->cur_aio_dio = NULL;
/*
@@ -3086,18 +3090,25 @@ static const struct address_space_operations ext4_da_aops = {
void ext4_set_aops(struct inode *inode)
{
- if (ext4_should_order_data(inode) &&
- test_opt(inode->i_sb, DELALLOC))
- inode->i_mapping->a_ops = &ext4_da_aops;
- else if (ext4_should_order_data(inode))
- inode->i_mapping->a_ops = &ext4_ordered_aops;
- else if (ext4_should_writeback_data(inode) &&
- test_opt(inode->i_sb, DELALLOC))
- inode->i_mapping->a_ops = &ext4_da_aops;
- else if (ext4_should_writeback_data(inode))
- inode->i_mapping->a_ops = &ext4_writeback_aops;
- else
+ switch (ext4_inode_journal_mode(inode)) {
+ case EXT4_INODE_ORDERED_DATA_MODE:
+ if (test_opt(inode->i_sb, DELALLOC))
+ inode->i_mapping->a_ops = &ext4_da_aops;
+ else
+ inode->i_mapping->a_ops = &ext4_ordered_aops;
+ break;
+ case EXT4_INODE_WRITEBACK_DATA_MODE:
+ if (test_opt(inode->i_sb, DELALLOC))
+ inode->i_mapping->a_ops = &ext4_da_aops;
+ else
+ inode->i_mapping->a_ops = &ext4_writeback_aops;
+ break;
+ case EXT4_INODE_JOURNAL_DATA_MODE:
inode->i_mapping->a_ops = &ext4_journalled_aops;
+ break;
+ default:
+ BUG();
+ }
}
@@ -3329,16 +3340,16 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
{
struct inode *inode = file->f_path.dentry->d_inode;
if (!S_ISREG(inode->i_mode))
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
/* TODO: Add support for non extent hole punching */
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
}
if (EXT4_SB(inode->i_sb)->s_cluster_ratio > 1) {
/* TODO: Add support for bigalloc file systems */
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
}
return ext4_ext_punch_hole(file, offset, length);
@@ -3924,10 +3935,8 @@ static int ext4_do_update_inode(handle_t *handle,
ext4_update_dynamic_rev(sb);
EXT4_SET_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
- sb->s_dirt = 1;
ext4_handle_sync(handle);
- err = ext4_handle_dirty_metadata(handle, NULL,
- EXT4_SB(sb)->s_sbh);
+ err = ext4_handle_dirty_super(handle, sb);
}
}
raw_inode->i_generation = cpu_to_le32(inode->i_generation);
@@ -4152,11 +4161,9 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
}
if (attr->ia_valid & ATTR_SIZE) {
- if (attr->ia_size != i_size_read(inode)) {
+ if (attr->ia_size != i_size_read(inode))
truncate_setsize(inode, attr->ia_size);
- ext4_truncate(inode);
- } else if (ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS))
- ext4_truncate(inode);
+ ext4_truncate(inode);
}
if (!rc) {
@@ -4314,7 +4321,7 @@ int ext4_mark_iloc_dirty(handle_t *handle,
{
int err = 0;
- if (test_opt(inode->i_sb, I_VERSION))
+ if (IS_I_VERSION(inode))
inode_inc_iversion(inode);
/* the do_update_inode consumes one bh->b_count */
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index cb990b21c698bd9dd1ec0e4bb8488f6e82bbe2f7..99ab428bcfa089822e74b433aee7b1bf4076e34d 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -21,6 +21,7 @@
* mballoc.c contains the multiblocks allocation routines
*/
+#include "ext4_jbd2.h"
#include "mballoc.h"
#include <linux/debugfs.h>
#include <linux/slab.h>
@@ -339,7 +340,7 @@
*/
static struct kmem_cache *ext4_pspace_cachep;
static struct kmem_cache *ext4_ac_cachep;
-static struct kmem_cache *ext4_free_ext_cachep;
+static struct kmem_cache *ext4_free_data_cachep;
/* We create slab caches for groupinfo data structures based on the
* superblock block size. There will be one per mounted filesystem for
@@ -357,7 +358,8 @@ static void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
ext4_group_t group);
static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap,
ext4_group_t group);
-static void release_blocks_on_commit(journal_t *journal, transaction_t *txn);
+static void ext4_free_data_callback(struct super_block *sb,
+ struct ext4_journal_cb_entry *jce, int rc);
static inline void *mb_correct_addr_and_bit(int *bit, void *addr)
{
@@ -425,7 +427,7 @@ static void *mb_find_buddy(struct ext4_buddy *e4b, int order, int *max)
{
char *bb;
- BUG_ON(EXT4_MB_BITMAP(e4b) == EXT4_MB_BUDDY(e4b));
+ BUG_ON(e4b->bd_bitmap == e4b->bd_buddy);
BUG_ON(max == NULL);
if (order > e4b->bd_blkbits + 1) {
@@ -436,10 +438,10 @@ static void *mb_find_buddy(struct ext4_buddy *e4b, int order, int *max)
/* at order 0 we see each particular block */
if (order == 0) {
*max = 1 << (e4b->bd_blkbits + 3);
- return EXT4_MB_BITMAP(e4b);
+ return e4b->bd_bitmap;
}
- bb = EXT4_MB_BUDDY(e4b) + EXT4_SB(e4b->bd_sb)->s_mb_offsets[order];
+ bb = e4b->bd_buddy + EXT4_SB(e4b->bd_sb)->s_mb_offsets[order];
*max = EXT4_SB(e4b->bd_sb)->s_mb_maxs[order];
return bb;
@@ -588,7 +590,7 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file,
for (j = 0; j < (1 << order); j++) {
k = (i * (1 << order)) + j;
MB_CHECK_ASSERT(
- !mb_test_bit(k, EXT4_MB_BITMAP(e4b)));
+ !mb_test_bit(k, e4b->bd_bitmap));
}
count++;
}
@@ -782,7 +784,7 @@ static int ext4_mb_init_cache(struct page *page, char *incore)
int groups_per_page;
int err = 0;
int i;
- ext4_group_t first_group;
+ ext4_group_t first_group, group;
int first_block;
struct super_block *sb;
struct buffer_head *bhs;
@@ -806,24 +808,23 @@ static int ext4_mb_init_cache(struct page *page, char *incore)
/* allocate buffer_heads to read bitmaps */
if (groups_per_page > 1) {
- err = -ENOMEM;
i = sizeof(struct buffer_head *) * groups_per_page;
bh = kzalloc(i, GFP_NOFS);
- if (bh == NULL)
+ if (bh == NULL) {
+ err = -ENOMEM;
goto out;
+ }
} else
bh = &bhs;
first_group = page->index * blocks_per_page / 2;
/* read all groups the page covers into the cache */
- for (i = 0; i < groups_per_page; i++) {
- struct ext4_group_desc *desc;
-
- if (first_group + i >= ngroups)
+ for (i = 0, group = first_group; i < groups_per_page; i++, group++) {
+ if (group >= ngroups)
break;
- grinfo = ext4_get_group_info(sb, first_group + i);
+ grinfo = ext4_get_group_info(sb, group);
/*
* If page is uptodate then we came here after online resize
* which added some new uninitialized group info structs, so
@@ -834,69 +835,21 @@ static int ext4_mb_init_cache(struct page *page, char *incore)
bh[i] = NULL;
continue;
}
-
- err = -EIO;
- desc = ext4_get_group_desc(sb, first_group + i, NULL);
- if (desc == NULL)
- goto out;
-
- err = -ENOMEM;
- bh[i] = sb_getblk(sb, ext4_block_bitmap(sb, desc));
- if (bh[i] == NULL)
+ if (!(bh[i] = ext4_read_block_bitmap_nowait(sb, group))) {
+ err = -ENOMEM;
goto out;
-
- if (bitmap_uptodate(bh[i]))
- continue;
-
- lock_buffer(bh[i]);
- if (bitmap_uptodate(bh[i])) {
- unlock_buffer(bh[i]);
- continue;
- }
- ext4_lock_group(sb, first_group + i);
- if (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
- ext4_init_block_bitmap(sb, bh[i],
- first_group + i, desc);
- set_bitmap_uptodate(bh[i]);
- set_buffer_uptodate(bh[i]);
- ext4_unlock_group(sb, first_group + i);
- unlock_buffer(bh[i]);
- continue;
}
- ext4_unlock_group(sb, first_group + i);
- if (buffer_uptodate(bh[i])) {
- /*
- * if not uninit if bh is uptodate,
- * bitmap is also uptodate
- */
- set_bitmap_uptodate(bh[i]);
- unlock_buffer(bh[i]);
- continue;
- }
- get_bh(bh[i]);
- /*
- * submit the buffer_head for read. We can
- * safely mark the bitmap as uptodate now.
- * We do it here so the bitmap uptodate bit
- * get set with buffer lock held.
- */
- set_bitmap_uptodate(bh[i]);
- bh[i]->b_end_io = end_buffer_read_sync;
- submit_bh(READ, bh[i]);
- mb_debug(1, "read bitmap for group %u\n", first_group + i);
+ mb_debug(1, "read bitmap for group %u\n", group);
}
/* wait for I/O completion */
- for (i = 0; i < groups_per_page; i++)
- if (bh[i])
- wait_on_buffer(bh[i]);
-
- err = -EIO;
- for (i = 0; i < groups_per_page; i++)
- if (bh[i] && !buffer_uptodate(bh[i]))
+ for (i = 0, group = first_group; i < groups_per_page; i++, group++) {
+ if (bh[i] && ext4_wait_block_bitmap(sb, group, bh[i])) {
+ err = -EIO;
goto out;
+ }
+ }
- err = 0;
first_block = page->index * blocks_per_page;
for (i = 0; i < blocks_per_page; i++) {
int group;
@@ -1250,10 +1203,10 @@ static int mb_find_order_for_block(struct ext4_buddy *e4b, int block)
int order = 1;
void *bb;
- BUG_ON(EXT4_MB_BITMAP(e4b) == EXT4_MB_BUDDY(e4b));
+ BUG_ON(e4b->bd_bitmap == e4b->bd_buddy);
BUG_ON(block >= (1 << (e4b->bd_blkbits + 3)));
- bb = EXT4_MB_BUDDY(e4b);
+ bb = e4b->bd_buddy;
while (order <= e4b->bd_blkbits + 1) {
block = block >> 1;
if (!mb_test_bit(block, bb)) {
@@ -1323,9 +1276,9 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
/* let's maintain fragments counter */
if (first != 0)
- block = !mb_test_bit(first - 1, EXT4_MB_BITMAP(e4b));
+ block = !mb_test_bit(first - 1, e4b->bd_bitmap);
if (first + count < EXT4_SB(sb)->s_mb_maxs[0])
- max = !mb_test_bit(first + count, EXT4_MB_BITMAP(e4b));
+ max = !mb_test_bit(first + count, e4b->bd_bitmap);
if (block && max)
e4b->bd_info->bb_fragments--;
else if (!block && !max)
@@ -1336,7 +1289,7 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
block = first++;
order = 0;
- if (!mb_test_bit(block, EXT4_MB_BITMAP(e4b))) {
+ if (!mb_test_bit(block, e4b->bd_bitmap)) {
ext4_fsblk_t blocknr;
blocknr = ext4_group_first_block_no(sb, e4b->bd_group);
@@ -1347,7 +1300,7 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
"freeing already freed block "
"(bit %u)", block);
}
- mb_clear_bit(block, EXT4_MB_BITMAP(e4b));
+ mb_clear_bit(block, e4b->bd_bitmap);
e4b->bd_info->bb_counters[order]++;
/* start of the buddy */
@@ -1429,7 +1382,7 @@ static int mb_find_extent(struct ext4_buddy *e4b, int order, int block,
break;
next = (block + 1) * (1 << order);
- if (mb_test_bit(next, EXT4_MB_BITMAP(e4b)))
+ if (mb_test_bit(next, e4b->bd_bitmap))
break;
order = mb_find_order_for_block(e4b, next);
@@ -1466,9 +1419,9 @@ static int mb_mark_used(struct ext4_buddy *e4b, struct ext4_free_extent *ex)
/* let's maintain fragments counter */
if (start != 0)
- mlen = !mb_test_bit(start - 1, EXT4_MB_BITMAP(e4b));
+ mlen = !mb_test_bit(start - 1, e4b->bd_bitmap);
if (start + len < EXT4_SB(e4b->bd_sb)->s_mb_maxs[0])
- max = !mb_test_bit(start + len, EXT4_MB_BITMAP(e4b));
+ max = !mb_test_bit(start + len, e4b->bd_bitmap);
if (mlen && max)
e4b->bd_info->bb_fragments++;
else if (!mlen && !max)
@@ -1511,7 +1464,7 @@ static int mb_mark_used(struct ext4_buddy *e4b, struct ext4_free_extent *ex)
}
mb_set_largest_free_order(e4b->bd_sb, e4b->bd_info);
- ext4_set_bits(EXT4_MB_BITMAP(e4b), ex->fe_start, len0);
+ ext4_set_bits(e4b->bd_bitmap, ex->fe_start, len0);
mb_check_buddy(e4b);
return ret;
@@ -1810,7 +1763,7 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
struct ext4_buddy *e4b)
{
struct super_block *sb = ac->ac_sb;
- void *bitmap = EXT4_MB_BITMAP(e4b);
+ void *bitmap = e4b->bd_bitmap;
struct ext4_free_extent ex;
int i;
int free;
@@ -1870,7 +1823,7 @@ void ext4_mb_scan_aligned(struct ext4_allocation_context *ac,
{
struct super_block *sb = ac->ac_sb;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- void *bitmap = EXT4_MB_BITMAP(e4b);
+ void *bitmap = e4b->bd_bitmap;
struct ext4_free_extent ex;
ext4_fsblk_t first_group_block;
ext4_fsblk_t a;
@@ -2224,7 +2177,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group,
EXT4_DESC_PER_BLOCK_BITS(sb);
meta_group_info = kmalloc(metalen, GFP_KERNEL);
if (meta_group_info == NULL) {
- ext4_msg(sb, KERN_ERR, "EXT4-fs: can't allocate mem "
+ ext4_msg(sb, KERN_ERR, "can't allocate mem "
"for a buddy group");
goto exit_meta_group_info;
}
@@ -2238,7 +2191,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group,
meta_group_info[i] = kmem_cache_alloc(cachep, GFP_KERNEL);
if (meta_group_info[i] == NULL) {
- ext4_msg(sb, KERN_ERR, "EXT4-fs: can't allocate buddy mem");
+ ext4_msg(sb, KERN_ERR, "can't allocate buddy mem");
goto exit_group_info;
}
memset(meta_group_info[i], 0, kmem_cache_size(cachep));
@@ -2522,9 +2475,6 @@ int ext4_mb_init(struct super_block *sb, int needs_recovery)
proc_create_data("mb_groups", S_IRUGO, sbi->s_proc,
&ext4_mb_seq_groups_fops, sb);
- if (sbi->s_journal)
- sbi->s_journal->j_commit_callback = release_blocks_on_commit;
-
return 0;
out_free_locality_groups:
@@ -2637,58 +2587,55 @@ static inline int ext4_issue_discard(struct super_block *sb,
* This function is called by the jbd2 layer once the commit has finished,
* so we know we can free the blocks that were released with that commit.
*/
-static void release_blocks_on_commit(journal_t *journal, transaction_t *txn)
+static void ext4_free_data_callback(struct super_block *sb,
+ struct ext4_journal_cb_entry *jce,
+ int rc)
{
- struct super_block *sb = journal->j_private;
+ struct ext4_free_data *entry = (struct ext4_free_data *)jce;
struct ext4_buddy e4b;
struct ext4_group_info *db;
int err, count = 0, count2 = 0;
- struct ext4_free_data *entry;
- struct list_head *l, *ltmp;
- list_for_each_safe(l, ltmp, &txn->t_private_list) {
- entry = list_entry(l, struct ext4_free_data, list);
+ mb_debug(1, "gonna free %u blocks in group %u (0x%p):",
+ entry->efd_count, entry->efd_group, entry);
- mb_debug(1, "gonna free %u blocks in group %u (0x%p):",
- entry->count, entry->group, entry);
+ if (test_opt(sb, DISCARD))
+ ext4_issue_discard(sb, entry->efd_group,
+ entry->efd_start_cluster, entry->efd_count);
- if (test_opt(sb, DISCARD))
- ext4_issue_discard(sb, entry->group,
- entry->start_cluster, entry->count);
+ err = ext4_mb_load_buddy(sb, entry->efd_group, &e4b);
+ /* we expect to find existing buddy because it's pinned */
+ BUG_ON(err != 0);
- err = ext4_mb_load_buddy(sb, entry->group, &e4b);
- /* we expect to find existing buddy because it's pinned */
- BUG_ON(err != 0);
- db = e4b.bd_info;
- /* there are blocks to put in buddy to make them really free */
- count += entry->count;
- count2++;
- ext4_lock_group(sb, entry->group);
- /* Take it out of per group rb tree */
- rb_erase(&entry->node, &(db->bb_free_root));
- mb_free_blocks(NULL, &e4b, entry->start_cluster, entry->count);
+ db = e4b.bd_info;
+ /* there are blocks to put in buddy to make them really free */
+ count += entry->efd_count;
+ count2++;
+ ext4_lock_group(sb, entry->efd_group);
+ /* Take it out of per group rb tree */
+ rb_erase(&entry->efd_node, &(db->bb_free_root));
+ mb_free_blocks(NULL, &e4b, entry->efd_start_cluster, entry->efd_count);
- /*
- * Clear the trimmed flag for the group so that the next
- * ext4_trim_fs can trim it.
- * If the volume is mounted with -o discard, online discard
- * is supported and the free blocks will be trimmed online.
- */
- if (!test_opt(sb, DISCARD))
- EXT4_MB_GRP_CLEAR_TRIMMED(db);
+ /*
+ * Clear the trimmed flag for the group so that the next
+ * ext4_trim_fs can trim it.
+ * If the volume is mounted with -o discard, online discard
+ * is supported and the free blocks will be trimmed online.
+ */
+ if (!test_opt(sb, DISCARD))
+ EXT4_MB_GRP_CLEAR_TRIMMED(db);
- if (!db->bb_free_root.rb_node) {
- /* No more items in the per group rb tree
- * balance refcounts from ext4_mb_free_metadata()
- */
- page_cache_release(e4b.bd_buddy_page);
- page_cache_release(e4b.bd_bitmap_page);
- }
- ext4_unlock_group(sb, entry->group);
- kmem_cache_free(ext4_free_ext_cachep, entry);
- ext4_mb_unload_buddy(&e4b);
+ if (!db->bb_free_root.rb_node) {
+ /* No more items in the per group rb tree
+ * balance refcounts from ext4_mb_free_metadata()
+ */
+ page_cache_release(e4b.bd_buddy_page);
+ page_cache_release(e4b.bd_bitmap_page);
}
+ ext4_unlock_group(sb, entry->efd_group);
+ kmem_cache_free(ext4_free_data_cachep, entry);
+ ext4_mb_unload_buddy(&e4b);
mb_debug(1, "freed %u blocks in %u structures\n", count, count2);
}
@@ -2741,9 +2688,9 @@ int __init ext4_init_mballoc(void)
return -ENOMEM;
}
- ext4_free_ext_cachep = KMEM_CACHE(ext4_free_data,
- SLAB_RECLAIM_ACCOUNT);
- if (ext4_free_ext_cachep == NULL) {
+ ext4_free_data_cachep = KMEM_CACHE(ext4_free_data,
+ SLAB_RECLAIM_ACCOUNT);
+ if (ext4_free_data_cachep == NULL) {
kmem_cache_destroy(ext4_pspace_cachep);
kmem_cache_destroy(ext4_ac_cachep);
return -ENOMEM;
@@ -2761,7 +2708,7 @@ void ext4_exit_mballoc(void)
rcu_barrier();
kmem_cache_destroy(ext4_pspace_cachep);
kmem_cache_destroy(ext4_ac_cachep);
- kmem_cache_destroy(ext4_free_ext_cachep);
+ kmem_cache_destroy(ext4_free_data_cachep);
ext4_groupinfo_destroy_slabs();
ext4_remove_debugfs_entry();
}
@@ -2815,7 +2762,7 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
len = EXT4_C2B(sbi, ac->ac_b_ex.fe_len);
if (!ext4_data_block_valid(sbi, block, len)) {
ext4_error(sb, "Allocating blocks %llu-%llu which overlap "
- "fs metadata\n", block, block+len);
+ "fs metadata", block, block+len);
/* File system mounted not to panic on error
* Fix the bitmap and repeat the block allocation
* We leak some of the blocks here.
@@ -2911,7 +2858,8 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
int bsbits, max;
ext4_lblk_t end;
- loff_t size, orig_size, start_off;
+ loff_t size, start_off;
+ loff_t orig_size __maybe_unused;
ext4_lblk_t start;
struct ext4_inode_info *ei = EXT4_I(ac->ac_inode);
struct ext4_prealloc_space *pa;
@@ -3321,8 +3269,8 @@ static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap,
n = rb_first(&(grp->bb_free_root));
while (n) {
- entry = rb_entry(n, struct ext4_free_data, node);
- ext4_set_bits(bitmap, entry->start_cluster, entry->count);
+ entry = rb_entry(n, struct ext4_free_data, efd_node);
+ ext4_set_bits(bitmap, entry->efd_start_cluster, entry->efd_count);
n = rb_next(n);
}
return;
@@ -3916,11 +3864,11 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac)
(EXT4_SB(sb)->s_mount_flags & EXT4_MF_FS_ABORTED))
return;
- ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: Can't allocate:"
+ ext4_msg(ac->ac_sb, KERN_ERR, "Can't allocate:"
" Allocation context details:");
- ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: status %d flags %d",
+ ext4_msg(ac->ac_sb, KERN_ERR, "status %d flags %d",
ac->ac_status, ac->ac_flags);
- ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: orig %lu/%lu/%lu@%lu, "
+ ext4_msg(ac->ac_sb, KERN_ERR, "orig %lu/%lu/%lu@%lu, "
"goal %lu/%lu/%lu@%lu, "
"best %lu/%lu/%lu@%lu cr %d",
(unsigned long)ac->ac_o_ex.fe_group,
@@ -3936,9 +3884,9 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac)
(unsigned long)ac->ac_b_ex.fe_len,
(unsigned long)ac->ac_b_ex.fe_logical,
(int)ac->ac_criteria);
- ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: %lu scanned, %d found",
+ ext4_msg(ac->ac_sb, KERN_ERR, "%lu scanned, %d found",
ac->ac_ex_scanned, ac->ac_found);
- ext4_msg(ac->ac_sb, KERN_ERR, "EXT4-fs: groups: ");
+ ext4_msg(ac->ac_sb, KERN_ERR, "groups: ");
ngroups = ext4_get_groups_count(sb);
for (i = 0; i < ngroups; i++) {
struct ext4_group_info *grp = ext4_get_group_info(sb, i);
@@ -4428,9 +4376,9 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
static int can_merge(struct ext4_free_data *entry1,
struct ext4_free_data *entry2)
{
- if ((entry1->t_tid == entry2->t_tid) &&
- (entry1->group == entry2->group) &&
- ((entry1->start_cluster + entry1->count) == entry2->start_cluster))
+ if ((entry1->efd_tid == entry2->efd_tid) &&
+ (entry1->efd_group == entry2->efd_group) &&
+ ((entry1->efd_start_cluster + entry1->efd_count) == entry2->efd_start_cluster))
return 1;
return 0;
}
@@ -4452,8 +4400,8 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
BUG_ON(e4b->bd_bitmap_page == NULL);
BUG_ON(e4b->bd_buddy_page == NULL);
- new_node = &new_entry->node;
- cluster = new_entry->start_cluster;
+ new_node = &new_entry->efd_node;
+ cluster = new_entry->efd_start_cluster;
if (!*n) {
/* first free block exent. We need to
@@ -4466,10 +4414,10 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
}
while (*n) {
parent = *n;
- entry = rb_entry(parent, struct ext4_free_data, node);
- if (cluster < entry->start_cluster)
+ entry = rb_entry(parent, struct ext4_free_data, efd_node);
+ if (cluster < entry->efd_start_cluster)
n = &(*n)->rb_left;
- else if (cluster >= (entry->start_cluster + entry->count))
+ else if (cluster >= (entry->efd_start_cluster + entry->efd_count))
n = &(*n)->rb_right;
else {
ext4_grp_locked_error(sb, group, 0,
@@ -4486,34 +4434,29 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
/* Now try to see the extent can be merged to left and right */
node = rb_prev(new_node);
if (node) {
- entry = rb_entry(node, struct ext4_free_data, node);
+ entry = rb_entry(node, struct ext4_free_data, efd_node);
if (can_merge(entry, new_entry)) {
- new_entry->start_cluster = entry->start_cluster;
- new_entry->count += entry->count;
+ new_entry->efd_start_cluster = entry->efd_start_cluster;
+ new_entry->efd_count += entry->efd_count;
rb_erase(node, &(db->bb_free_root));
- spin_lock(&sbi->s_md_lock);
- list_del(&entry->list);
- spin_unlock(&sbi->s_md_lock);
- kmem_cache_free(ext4_free_ext_cachep, entry);
+ ext4_journal_callback_del(handle, &entry->efd_jce);
+ kmem_cache_free(ext4_free_data_cachep, entry);
}
}
node = rb_next(new_node);
if (node) {
- entry = rb_entry(node, struct ext4_free_data, node);
+ entry = rb_entry(node, struct ext4_free_data, efd_node);
if (can_merge(new_entry, entry)) {
- new_entry->count += entry->count;
+ new_entry->efd_count += entry->efd_count;
rb_erase(node, &(db->bb_free_root));
- spin_lock(&sbi->s_md_lock);
- list_del(&entry->list);
- spin_unlock(&sbi->s_md_lock);
- kmem_cache_free(ext4_free_ext_cachep, entry);
+ ext4_journal_callback_del(handle, &entry->efd_jce);
+ kmem_cache_free(ext4_free_data_cachep, entry);
}
}
/* Add the extent to transaction's private list */
- spin_lock(&sbi->s_md_lock);
- list_add(&new_entry->list, &handle->h_transaction->t_private_list);
- spin_unlock(&sbi->s_md_lock);
+ ext4_journal_callback_add(handle, ext4_free_data_callback,
+ &new_entry->efd_jce);
return 0;
}
@@ -4691,15 +4634,15 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
* blocks being freed are metadata. these blocks shouldn't
* be used until this transaction is committed
*/
- new_entry = kmem_cache_alloc(ext4_free_ext_cachep, GFP_NOFS);
+ new_entry = kmem_cache_alloc(ext4_free_data_cachep, GFP_NOFS);
if (!new_entry) {
err = -ENOMEM;
goto error_return;
}
- new_entry->start_cluster = bit;
- new_entry->group = block_group;
- new_entry->count = count_clusters;
- new_entry->t_tid = handle->h_transaction->t_tid;
+ new_entry->efd_start_cluster = bit;
+ new_entry->efd_group = block_group;
+ new_entry->efd_count = count_clusters;
+ new_entry->efd_tid = handle->h_transaction->t_tid;
ext4_lock_group(sb, block_group);
mb_clear_bits(bitmap_bh->b_data, bit, count_clusters);
@@ -4971,11 +4914,11 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
start = (e4b.bd_info->bb_first_free > start) ?
e4b.bd_info->bb_first_free : start;
- while (start < max) {
- start = mb_find_next_zero_bit(bitmap, max, start);
- if (start >= max)
+ while (start <= max) {
+ start = mb_find_next_zero_bit(bitmap, max + 1, start);
+ if (start > max)
break;
- next = mb_find_next_bit(bitmap, max, start);
+ next = mb_find_next_bit(bitmap, max + 1, start);
if ((next - start) >= minblocks) {
ext4_trim_extent(sb, start,
@@ -5027,37 +4970,36 @@ ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
{
struct ext4_group_info *grp;
- ext4_group_t first_group, last_group;
- ext4_group_t group, ngroups = ext4_get_groups_count(sb);
+ ext4_group_t group, first_group, last_group;
ext4_grpblk_t cnt = 0, first_cluster, last_cluster;
- uint64_t start, len, minlen, trimmed = 0;
+ uint64_t start, end, minlen, trimmed = 0;
ext4_fsblk_t first_data_blk =
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
+ ext4_fsblk_t max_blks = ext4_blocks_count(EXT4_SB(sb)->s_es);
int ret = 0;
start = range->start >> sb->s_blocksize_bits;
- len = range->len >> sb->s_blocksize_bits;
+ end = start + (range->len >> sb->s_blocksize_bits) - 1;
minlen = range->minlen >> sb->s_blocksize_bits;
- if (unlikely(minlen > EXT4_CLUSTERS_PER_GROUP(sb)))
+ if (unlikely(minlen > EXT4_CLUSTERS_PER_GROUP(sb)) ||
+ unlikely(start >= max_blks))
return -EINVAL;
- if (start + len <= first_data_blk)
+ if (end >= max_blks)
+ end = max_blks - 1;
+ if (end <= first_data_blk)
goto out;
- if (start < first_data_blk) {
- len -= first_data_blk - start;
+ if (start < first_data_blk)
start = first_data_blk;
- }
- /* Determine first and last group to examine based on start and len */
+ /* Determine first and last group to examine based on start and end */
ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) start,
&first_group, &first_cluster);
- ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) (start + len),
+ ext4_get_group_no_and_offset(sb, (ext4_fsblk_t) end,
&last_group, &last_cluster);
- last_group = (last_group > ngroups - 1) ? ngroups - 1 : last_group;
- last_cluster = EXT4_CLUSTERS_PER_GROUP(sb);
- if (first_group > last_group)
- return -EINVAL;
+ /* end now represents the last cluster to discard in this group */
+ end = EXT4_CLUSTERS_PER_GROUP(sb) - 1;
for (group = first_group; group <= last_group; group++) {
grp = ext4_get_group_info(sb, group);
@@ -5069,31 +5011,35 @@ int ext4_trim_fs(struct super_block *sb, struct fstrim_range *range)
}
/*
- * For all the groups except the last one, last block will
- * always be EXT4_BLOCKS_PER_GROUP(sb), so we only need to
- * change it for the last group in which case start +
- * len < EXT4_BLOCKS_PER_GROUP(sb).
+ * For all the groups except the last one, last cluster will
+ * always be EXT4_CLUSTERS_PER_GROUP(sb)-1, so we only need to
+ * change it for the last group, note that last_cluster is
+ * already computed earlier by ext4_get_group_no_and_offset()
*/
- if (first_cluster + len < EXT4_CLUSTERS_PER_GROUP(sb))
- last_cluster = first_cluster + len;
- len -= last_cluster - first_cluster;
+ if (group == last_group)
+ end = last_cluster;
if (grp->bb_free >= minlen) {
cnt = ext4_trim_all_free(sb, group, first_cluster,
- last_cluster, minlen);
+ end, minlen);
if (cnt < 0) {
ret = cnt;
break;
}
+ trimmed += cnt;
}
- trimmed += cnt;
+
+ /*
+ * For every group except the first one, we are sure
+ * that the first cluster to discard will be cluster #0.
+ */
first_cluster = 0;
}
- range->len = trimmed * sb->s_blocksize;
if (!ret)
atomic_set(&EXT4_SB(sb)->s_last_trim_minblks, minlen);
out:
+ range->len = trimmed * sb->s_blocksize;
return ret;
}
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 47705f3285e3c145f171dcd2add8c6d311d8298e..c070618c21ce8e4d4f6bb00fff94136e2c2bf615 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -96,21 +96,23 @@ extern u8 mb_enable_debug;
struct ext4_free_data {
- /* this links the free block information from group_info */
- struct rb_node node;
+ /* MUST be the first member */
+ struct ext4_journal_cb_entry efd_jce;
+
+ /* ext4_free_data private data starts from here */
- /* this links the free block information from ext4_sb_info */
- struct list_head list;
+ /* this links the free block information from group_info */
+ struct rb_node efd_node;
/* group which free block extent belongs */
- ext4_group_t group;
+ ext4_group_t efd_group;
/* free block extent */
- ext4_grpblk_t start_cluster;
- ext4_grpblk_t count;
+ ext4_grpblk_t efd_start_cluster;
+ ext4_grpblk_t efd_count;
/* transaction which freed this extent */
- tid_t t_tid;
+ tid_t efd_tid;
};
struct ext4_prealloc_space {
@@ -210,8 +212,6 @@ struct ext4_buddy {
__u16 bd_blkbits;
ext4_group_t bd_group;
};
-#define EXT4_MB_BITMAP(e4b) ((e4b)->bd_bitmap)
-#define EXT4_MB_BUDDY(e4b) ((e4b)->bd_buddy)
static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb,
struct ext4_free_extent *fex)
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index e7d6bb0acfa6ccfd40e6a4f2e5ebd4e668374852..f39f80f8f2c541a78da45065b535100ffecadd5d 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -471,7 +471,7 @@ int ext4_ext_migrate(struct inode *inode)
tmp_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,
S_IFREG, NULL, goal, owner);
if (IS_ERR(tmp_inode)) {
- retval = PTR_ERR(inode);
+ retval = PTR_ERR(tmp_inode);
ext4_journal_stop(handle);
return retval;
}
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 7ea4ba4eff2ac4b9dbcae63a54ee68bb5e1a7190..ed6548d89165e1d9c31118aca21d3e89a3772ab2 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -257,8 +257,8 @@ int ext4_multi_mount_protect(struct super_block *sb,
* If check_interval in MMP block is larger, use that instead of
* update_interval from the superblock.
*/
- if (mmp->mmp_check_interval > mmp_check_interval)
- mmp_check_interval = mmp->mmp_check_interval;
+ if (le16_to_cpu(mmp->mmp_check_interval) > mmp_check_interval)
+ mmp_check_interval = le16_to_cpu(mmp->mmp_check_interval);
seq = le32_to_cpu(mmp->mmp_seq);
if (seq == EXT4_MMP_SEQ_CLEAN)
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 2043f482375d000c517093f844ed2ce873802a0e..349d7b3671c863ce1565a5d2a184c6bbdafbf6e3 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -468,7 +468,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
fail:
if (*err == ERR_BAD_DX_DIR)
ext4_warning(dir->i_sb,
- "Corrupt dir inode %ld, running e2fsck is "
+ "Corrupt dir inode %lu, running e2fsck is "
"recommended.", dir->i_ino);
return NULL;
}
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 4758518965187749815eb7b76736313faa5e95c5..74cd1f7f1f888947ac6ef3e2f07c7ec60a66a748 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -60,7 +60,6 @@ void ext4_ioend_wait(struct inode *inode)
static void put_io_page(struct ext4_io_page *io_page)
{
if (atomic_dec_and_test(&io_page->p_count)) {
- end_page_writeback(io_page->p_page);
put_page(io_page->p_page);
kmem_cache_free(io_page_cachep, io_page);
}
@@ -110,6 +109,8 @@ int ext4_end_io_nolock(ext4_io_end_t *io)
if (io->iocb)
aio_complete(io->iocb, io->result, 0);
+ if (io->flag & EXT4_IO_END_DIRECT)
+ inode_dio_done(inode);
/* Wake up anyone waiting on unwritten extent conversion */
if (atomic_dec_and_test(&EXT4_I(inode)->i_aiodio_unwritten))
wake_up_all(ext4_ioend_wq(io->inode));
@@ -127,12 +128,18 @@ static void ext4_end_io_work(struct work_struct *work)
unsigned long flags;
spin_lock_irqsave(&ei->i_completed_io_lock, flags);
+ if (io->flag & EXT4_IO_END_IN_FSYNC)
+ goto requeue;
if (list_empty(&io->list)) {
spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
goto free;
}
if (!mutex_trylock(&inode->i_mutex)) {
+ bool was_queued;
+requeue:
+ was_queued = !!(io->flag & EXT4_IO_END_QUEUED);
+ io->flag |= EXT4_IO_END_QUEUED;
spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
/*
* Requeue the work instead of waiting so that the work
@@ -145,9 +152,8 @@ static void ext4_end_io_work(struct work_struct *work)
* yield the cpu if it sees an end_io request that has already
* been requeued.
*/
- if (io->flag & EXT4_IO_END_QUEUED)
+ if (was_queued)
yield();
- io->flag |= EXT4_IO_END_QUEUED;
return;
}
list_del_init(&io->list);
@@ -227,9 +233,9 @@ static void ext4_end_bio(struct bio *bio, int error)
} while (bh != head);
}
- put_io_page(io_end->pages[i]);
+ if (atomic_read(&io_end->pages[i]->p_count) == 1)
+ end_page_writeback(io_end->pages[i]->p_page);
}
- io_end->num_io_pages = 0;
inode = io_end->inode;
if (error) {
@@ -421,6 +427,8 @@ int ext4_bio_write_page(struct ext4_io_submit *io,
* PageWriteback bit from the page to prevent the system from
* wedging later on.
*/
+ if (atomic_read(&io_page->p_count) == 1)
+ end_page_writeback(page);
put_io_page(io_page);
return ret;
}
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index f9d948f0eb861f08de3ef7b589b401846dc627f6..59fa0be272516adf6cbbc94384106690bf710c65 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1163,8 +1163,11 @@ static void ext4_update_super(struct super_block *sb,
do_div(reserved_blocks, 100);
ext4_blocks_count_set(es, ext4_blocks_count(es) + blocks_count);
+ ext4_free_blocks_count_set(es, ext4_free_blocks_count(es) + free_blocks);
le32_add_cpu(&es->s_inodes_count, EXT4_INODES_PER_GROUP(sb) *
flex_gd->count);
+ le32_add_cpu(&es->s_free_inodes_count, EXT4_INODES_PER_GROUP(sb) *
+ flex_gd->count);
/*
* We need to protect s_groups_count against other CPUs seeing
@@ -1465,6 +1468,7 @@ static int ext4_group_extend_no_check(struct super_block *sb,
}
ext4_blocks_count_set(es, o_blocks_count + add);
+ ext4_free_blocks_count_set(es, ext4_free_blocks_count(es) + add);
ext4_debug("freeing blocks %llu through %llu\n", o_blocks_count,
o_blocks_count + add);
/* We add the blocks to the bitmap and set the group need init bit */
@@ -1512,16 +1516,17 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
o_blocks_count = ext4_blocks_count(es);
if (test_opt(sb, DEBUG))
- printk(KERN_DEBUG "EXT4-fs: extending last group from %llu to %llu blocks\n",
- o_blocks_count, n_blocks_count);
+ ext4_msg(sb, KERN_DEBUG,
+ "extending last group from %llu to %llu blocks",
+ o_blocks_count, n_blocks_count);
if (n_blocks_count == 0 || n_blocks_count == o_blocks_count)
return 0;
if (n_blocks_count > (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) {
- printk(KERN_ERR "EXT4-fs: filesystem on %s:"
- " too large to resize to %llu blocks safely\n",
- sb->s_id, n_blocks_count);
+ ext4_msg(sb, KERN_ERR,
+ "filesystem too large to resize to %llu blocks safely",
+ n_blocks_count);
if (sizeof(sector_t) < 8)
ext4_warning(sb, "CONFIG_LBDAF not enabled");
return -EINVAL;
@@ -1582,7 +1587,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
ext4_fsblk_t o_blocks_count;
ext4_group_t o_group;
ext4_group_t n_group;
- ext4_grpblk_t offset;
+ ext4_grpblk_t offset, add;
unsigned long n_desc_blocks;
unsigned long o_desc_blocks;
unsigned long desc_blocks;
@@ -1591,8 +1596,8 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
o_blocks_count = ext4_blocks_count(es);
if (test_opt(sb, DEBUG))
- printk(KERN_DEBUG "EXT4-fs: resizing filesystem from %llu "
- "upto %llu blocks\n", o_blocks_count, n_blocks_count);
+ ext4_msg(sb, KERN_DEBUG, "resizing filesystem from %llu "
+ "to %llu blocks", o_blocks_count, n_blocks_count);
if (n_blocks_count < o_blocks_count) {
/* On-line shrinking not supported */
@@ -1605,7 +1610,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
return 0;
ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &offset);
- ext4_get_group_no_and_offset(sb, o_blocks_count, &o_group, &offset);
+ ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset);
n_desc_blocks = (n_group + EXT4_DESC_PER_BLOCK(sb)) /
EXT4_DESC_PER_BLOCK(sb);
@@ -1634,10 +1639,12 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
}
brelse(bh);
- if (offset != 0) {
- /* extend the last group */
- ext4_grpblk_t add;
- add = EXT4_BLOCKS_PER_GROUP(sb) - offset;
+ /* extend the last group */
+ if (n_group == o_group)
+ add = n_blocks_count - o_blocks_count;
+ else
+ add = EXT4_BLOCKS_PER_GROUP(sb) - (offset + 1);
+ if (add > 0) {
err = ext4_group_extend_no_check(sb, o_blocks_count, add);
if (err)
goto out;
@@ -1674,7 +1681,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
iput(resize_inode);
if (test_opt(sb, DEBUG))
- printk(KERN_DEBUG "EXT4-fs: resized filesystem from %llu "
- "upto %llu blocks\n", o_blocks_count, n_blocks_count);
+ ext4_msg(sb, KERN_DEBUG, "resized filesystem from %llu "
+ "upto %llu blocks", o_blocks_count, n_blocks_count);
return err;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 933900909ed0facb352e8d2c86c19a456a4fbb49..ceebaf853beb74c7e139e63f46bf44975696566b 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -62,6 +62,7 @@ static struct ext4_features *ext4_feat;
static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
unsigned long journal_devnum);
+static int ext4_show_options(struct seq_file *seq, struct dentry *root);
static int ext4_commit_super(struct super_block *sb, int sync);
static void ext4_mark_recovery_complete(struct super_block *sb,
struct ext4_super_block *es);
@@ -375,7 +376,7 @@ void ext4_journal_abort_handle(const char *caller, unsigned int line,
if (is_handle_aborted(handle))
return;
- printk(KERN_ERR "%s:%d: aborting transaction: %s in %s\n",
+ printk(KERN_ERR "EXT4-fs: %s:%d: aborting transaction: %s in %s\n",
caller, line, errstr, err_fn);
jbd2_journal_abort_handle(handle);
@@ -431,6 +432,22 @@ static int block_device_ejected(struct super_block *sb)
return bdi->dev == NULL;
}
+static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
+{
+ struct super_block *sb = journal->j_private;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ int error = is_journal_aborted(journal);
+ struct ext4_journal_cb_entry *jce, *tmp;
+
+ spin_lock(&sbi->s_md_lock);
+ list_for_each_entry_safe(jce, tmp, &txn->t_private_list, jce_list) {
+ list_del_init(&jce->jce_list);
+ spin_unlock(&sbi->s_md_lock);
+ jce->jce_func(sb, jce, error);
+ spin_lock(&sbi->s_md_lock);
+ }
+ spin_unlock(&sbi->s_md_lock);
+}
/* Deal with the reporting of failure conditions on a filesystem such as
* inconsistencies detected or read IO failures.
@@ -498,11 +515,16 @@ void ext4_error_inode(struct inode *inode, const char *function,
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
- printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: inode #%lu: ",
- inode->i_sb->s_id, function, line, inode->i_ino);
if (block)
- printk(KERN_CONT "block %llu: ", block);
- printk(KERN_CONT "comm %s: %pV\n", current->comm, &vaf);
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: "
+ "inode #%lu: block %llu: comm %s: %pV\n",
+ inode->i_sb->s_id, function, line, inode->i_ino,
+ block, current->comm, &vaf);
+ else
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: "
+ "inode #%lu: comm %s: %pV\n",
+ inode->i_sb->s_id, function, line, inode->i_ino,
+ current->comm, &vaf);
va_end(args);
ext4_handle_error(inode->i_sb);
@@ -524,15 +546,21 @@ void ext4_error_file(struct file *file, const char *function,
path = d_path(&(file->f_path), pathname, sizeof(pathname));
if (IS_ERR(path))
path = "(unknown)";
- printk(KERN_CRIT
- "EXT4-fs error (device %s): %s:%d: inode #%lu: ",
- inode->i_sb->s_id, function, line, inode->i_ino);
- if (block)
- printk(KERN_CONT "block %llu: ", block);
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
- printk(KERN_CONT "comm %s: path %s: %pV\n", current->comm, path, &vaf);
+ if (block)
+ printk(KERN_CRIT
+ "EXT4-fs error (device %s): %s:%d: inode #%lu: "
+ "block %llu: comm %s: path %s: %pV\n",
+ inode->i_sb->s_id, function, line, inode->i_ino,
+ block, current->comm, path, &vaf);
+ else
+ printk(KERN_CRIT
+ "EXT4-fs error (device %s): %s:%d: inode #%lu: "
+ "comm %s: path %s: %pV\n",
+ inode->i_sb->s_id, function, line, inode->i_ino,
+ current->comm, path, &vaf);
va_end(args);
ext4_handle_error(inode->i_sb);
@@ -808,9 +836,6 @@ static void ext4_put_super(struct super_block *sb)
destroy_workqueue(sbi->dio_unwritten_wq);
lock_super(sb);
- if (sb->s_dirt)
- ext4_commit_super(sb, 1);
-
if (sbi->s_journal) {
err = jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
@@ -827,9 +852,12 @@ static void ext4_put_super(struct super_block *sb)
if (!(sb->s_flags & MS_RDONLY)) {
EXT4_CLEAR_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER);
es->s_state = cpu_to_le16(sbi->s_mount_state);
- ext4_commit_super(sb, 1);
}
+ if (sb->s_dirt || !(sb->s_flags & MS_RDONLY))
+ ext4_commit_super(sb, 1);
+
if (sbi->s_proc) {
+ remove_proc_entry("options", sbi->s_proc);
remove_proc_entry(sb->s_id, ext4_proc_root);
}
kobject_del(&sbi->s_kobj);
@@ -990,180 +1018,6 @@ void ext4_clear_inode(struct inode *inode)
}
}
-static inline void ext4_show_quota_options(struct seq_file *seq,
- struct super_block *sb)
-{
-#if defined(CONFIG_QUOTA)
- struct ext4_sb_info *sbi = EXT4_SB(sb);
-
- if (sbi->s_jquota_fmt) {
- char *fmtname = "";
-
- switch (sbi->s_jquota_fmt) {
- case QFMT_VFS_OLD:
- fmtname = "vfsold";
- break;
- case QFMT_VFS_V0:
- fmtname = "vfsv0";
- break;
- case QFMT_VFS_V1:
- fmtname = "vfsv1";
- break;
- }
- seq_printf(seq, ",jqfmt=%s", fmtname);
- }
-
- if (sbi->s_qf_names[USRQUOTA])
- seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
-
- if (sbi->s_qf_names[GRPQUOTA])
- seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
-
- if (test_opt(sb, USRQUOTA))
- seq_puts(seq, ",usrquota");
-
- if (test_opt(sb, GRPQUOTA))
- seq_puts(seq, ",grpquota");
-#endif
-}
-
-/*
- * Show an option if
- * - it's set to a non-default value OR
- * - if the per-sb default is different from the global default
- */
-static int ext4_show_options(struct seq_file *seq, struct dentry *root)
-{
- int def_errors;
- unsigned long def_mount_opts;
- struct super_block *sb = root->d_sb;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- struct ext4_super_block *es = sbi->s_es;
-
- def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
- def_errors = le16_to_cpu(es->s_errors);
-
- if (sbi->s_sb_block != 1)
- seq_printf(seq, ",sb=%llu", sbi->s_sb_block);
- if (test_opt(sb, MINIX_DF))
- seq_puts(seq, ",minixdf");
- if (test_opt(sb, GRPID) && !(def_mount_opts & EXT4_DEFM_BSDGROUPS))
- seq_puts(seq, ",grpid");
- if (!test_opt(sb, GRPID) && (def_mount_opts & EXT4_DEFM_BSDGROUPS))
- seq_puts(seq, ",nogrpid");
- if (sbi->s_resuid != EXT4_DEF_RESUID ||
- le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID) {
- seq_printf(seq, ",resuid=%u", sbi->s_resuid);
- }
- if (sbi->s_resgid != EXT4_DEF_RESGID ||
- le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) {
- seq_printf(seq, ",resgid=%u", sbi->s_resgid);
- }
- if (test_opt(sb, ERRORS_RO)) {
- if (def_errors == EXT4_ERRORS_PANIC ||
- def_errors == EXT4_ERRORS_CONTINUE) {
- seq_puts(seq, ",errors=remount-ro");
- }
- }
- if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE)
- seq_puts(seq, ",errors=continue");
- if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC)
- seq_puts(seq, ",errors=panic");
- if (test_opt(sb, NO_UID32) && !(def_mount_opts & EXT4_DEFM_UID16))
- seq_puts(seq, ",nouid32");
- if (test_opt(sb, DEBUG) && !(def_mount_opts & EXT4_DEFM_DEBUG))
- seq_puts(seq, ",debug");
-#ifdef CONFIG_EXT4_FS_XATTR
- if (test_opt(sb, XATTR_USER))
- seq_puts(seq, ",user_xattr");
- if (!test_opt(sb, XATTR_USER))
- seq_puts(seq, ",nouser_xattr");
-#endif
-#ifdef CONFIG_EXT4_FS_POSIX_ACL
- if (test_opt(sb, POSIX_ACL) && !(def_mount_opts & EXT4_DEFM_ACL))
- seq_puts(seq, ",acl");
- if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL))
- seq_puts(seq, ",noacl");
-#endif
- if (sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ) {
- seq_printf(seq, ",commit=%u",
- (unsigned) (sbi->s_commit_interval / HZ));
- }
- if (sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME) {
- seq_printf(seq, ",min_batch_time=%u",
- (unsigned) sbi->s_min_batch_time);
- }
- if (sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME) {
- seq_printf(seq, ",max_batch_time=%u",
- (unsigned) sbi->s_max_batch_time);
- }
-
- /*
- * We're changing the default of barrier mount option, so
- * let's always display its mount state so it's clear what its
- * status is.
- */
- seq_puts(seq, ",barrier=");
- seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
- if (test_opt(sb, JOURNAL_ASYNC_COMMIT))
- seq_puts(seq, ",journal_async_commit");
- else if (test_opt(sb, JOURNAL_CHECKSUM))
- seq_puts(seq, ",journal_checksum");
- if (test_opt(sb, I_VERSION))
- seq_puts(seq, ",i_version");
- if (!test_opt(sb, DELALLOC) &&
- !(def_mount_opts & EXT4_DEFM_NODELALLOC))
- seq_puts(seq, ",nodelalloc");
-
- if (!test_opt(sb, MBLK_IO_SUBMIT))
- seq_puts(seq, ",nomblk_io_submit");
- if (sbi->s_stripe)
- seq_printf(seq, ",stripe=%lu", sbi->s_stripe);
- /*
- * journal mode get enabled in different ways
- * So just print the value even if we didn't specify it
- */
- if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
- seq_puts(seq, ",data=journal");
- else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
- seq_puts(seq, ",data=ordered");
- else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
- seq_puts(seq, ",data=writeback");
-
- if (sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS)
- seq_printf(seq, ",inode_readahead_blks=%u",
- sbi->s_inode_readahead_blks);
-
- if (test_opt(sb, DATA_ERR_ABORT))
- seq_puts(seq, ",data_err=abort");
-
- if (test_opt(sb, NO_AUTO_DA_ALLOC))
- seq_puts(seq, ",noauto_da_alloc");
-
- if (test_opt(sb, DISCARD) && !(def_mount_opts & EXT4_DEFM_DISCARD))
- seq_puts(seq, ",discard");
-
- if (test_opt(sb, NOLOAD))
- seq_puts(seq, ",norecovery");
-
- if (test_opt(sb, DIOREAD_NOLOCK))
- seq_puts(seq, ",dioread_nolock");
-
- if (test_opt(sb, BLOCK_VALIDITY) &&
- !(def_mount_opts & EXT4_DEFM_BLOCK_VALIDITY))
- seq_puts(seq, ",block_validity");
-
- if (!test_opt(sb, INIT_INODE_TABLE))
- seq_puts(seq, ",noinit_itable");
- else if (sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT)
- seq_printf(seq, ",init_itable=%u",
- (unsigned) sbi->s_li_wait_mult);
-
- ext4_show_quota_options(seq, sb);
-
- return 0;
-}
-
static struct inode *ext4_nfs_get_inode(struct super_block *sb,
u64 ino, u32 generation)
{
@@ -1316,18 +1170,17 @@ static const struct export_operations ext4_export_ops = {
enum {
Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid,
Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
- Opt_nouid32, Opt_debug, Opt_oldalloc, Opt_orlov,
+ Opt_nouid32, Opt_debug, Opt_removed,
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
- Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload, Opt_nobh, Opt_bh,
+ Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload,
Opt_commit, Opt_min_batch_time, Opt_max_batch_time,
- Opt_journal_update, Opt_journal_dev,
- Opt_journal_checksum, Opt_journal_async_commit,
+ Opt_journal_dev, Opt_journal_checksum, Opt_journal_async_commit,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_data_err_abort, Opt_data_err_ignore,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
- Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
- Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
+ Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
+ Opt_usrquota, Opt_grpquota, Opt_i_version,
Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
Opt_inode_readahead_blks, Opt_journal_ioprio,
@@ -1350,20 +1203,19 @@ static const match_table_t tokens = {
{Opt_err_ro, "errors=remount-ro"},
{Opt_nouid32, "nouid32"},
{Opt_debug, "debug"},
- {Opt_oldalloc, "oldalloc"},
- {Opt_orlov, "orlov"},
+ {Opt_removed, "oldalloc"},
+ {Opt_removed, "orlov"},
{Opt_user_xattr, "user_xattr"},
{Opt_nouser_xattr, "nouser_xattr"},
{Opt_acl, "acl"},
{Opt_noacl, "noacl"},
- {Opt_noload, "noload"},
{Opt_noload, "norecovery"},
- {Opt_nobh, "nobh"},
- {Opt_bh, "bh"},
+ {Opt_noload, "noload"},
+ {Opt_removed, "nobh"},
+ {Opt_removed, "bh"},
{Opt_commit, "commit=%u"},
{Opt_min_batch_time, "min_batch_time=%u"},
{Opt_max_batch_time, "max_batch_time=%u"},
- {Opt_journal_update, "journal=update"},
{Opt_journal_dev, "journal_dev=%u"},
{Opt_journal_checksum, "journal_checksum"},
{Opt_journal_async_commit, "journal_async_commit"},
@@ -1389,7 +1241,6 @@ static const match_table_t tokens = {
{Opt_nobarrier, "nobarrier"},
{Opt_i_version, "i_version"},
{Opt_stripe, "stripe=%u"},
- {Opt_resize, "resize"},
{Opt_delalloc, "delalloc"},
{Opt_nodelalloc, "nodelalloc"},
{Opt_mblk_io_submit, "mblk_io_submit"},
@@ -1408,6 +1259,11 @@ static const match_table_t tokens = {
{Opt_init_itable, "init_itable=%u"},
{Opt_init_itable, "init_itable"},
{Opt_noinit_itable, "noinit_itable"},
+ {Opt_removed, "check=none"}, /* mount option from ext2/3 */
+ {Opt_removed, "nocheck"}, /* mount option from ext2/3 */
+ {Opt_removed, "reservation"}, /* mount option from ext2/3 */
+ {Opt_removed, "noreservation"}, /* mount option from ext2/3 */
+ {Opt_removed, "journal=%u"}, /* mount option from ext2/3 */
{Opt_err, NULL},
};
@@ -1496,420 +1352,273 @@ static int clear_qf_name(struct super_block *sb, int qtype)
}
#endif
-static int parse_options(char *options, struct super_block *sb,
- unsigned long *journal_devnum,
- unsigned int *journal_ioprio,
- ext4_fsblk_t *n_blocks_count, int is_remount)
-{
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- char *p;
- substring_t args[MAX_OPT_ARGS];
- int data_opt = 0;
- int option;
+#define MOPT_SET 0x0001
+#define MOPT_CLEAR 0x0002
+#define MOPT_NOSUPPORT 0x0004
+#define MOPT_EXPLICIT 0x0008
+#define MOPT_CLEAR_ERR 0x0010
+#define MOPT_GTE0 0x0020
#ifdef CONFIG_QUOTA
- int qfmt;
+#define MOPT_Q 0
+#define MOPT_QFMT 0x0040
+#else
+#define MOPT_Q MOPT_NOSUPPORT
+#define MOPT_QFMT MOPT_NOSUPPORT
#endif
-
- if (!options)
- return 1;
-
- while ((p = strsep(&options, ",")) != NULL) {
- int token;
- if (!*p)
- continue;
-
- /*
- * Initialize args struct so we know whether arg was
- * found; some options take optional arguments.
- */
- args[0].to = args[0].from = NULL;
- token = match_token(p, tokens, args);
- switch (token) {
- case Opt_bsd_df:
- ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
- clear_opt(sb, MINIX_DF);
- break;
- case Opt_minix_df:
- ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
- set_opt(sb, MINIX_DF);
-
- break;
- case Opt_grpid:
- ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
- set_opt(sb, GRPID);
-
- break;
- case Opt_nogrpid:
- ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
- clear_opt(sb, GRPID);
-
- break;
- case Opt_resuid:
- if (match_int(&args[0], &option))
- return 0;
- sbi->s_resuid = option;
- break;
- case Opt_resgid:
- if (match_int(&args[0], &option))
- return 0;
- sbi->s_resgid = option;
- break;
- case Opt_sb:
- /* handled by get_sb_block() instead of here */
- /* *sb_block = match_int(&args[0]); */
- break;
- case Opt_err_panic:
- clear_opt(sb, ERRORS_CONT);
- clear_opt(sb, ERRORS_RO);
- set_opt(sb, ERRORS_PANIC);
- break;
- case Opt_err_ro:
- clear_opt(sb, ERRORS_CONT);
- clear_opt(sb, ERRORS_PANIC);
- set_opt(sb, ERRORS_RO);
- break;
- case Opt_err_cont:
- clear_opt(sb, ERRORS_RO);
- clear_opt(sb, ERRORS_PANIC);
- set_opt(sb, ERRORS_CONT);
- break;
- case Opt_nouid32:
- set_opt(sb, NO_UID32);
- break;
- case Opt_debug:
- set_opt(sb, DEBUG);
- break;
- case Opt_oldalloc:
- ext4_msg(sb, KERN_WARNING,
- "Ignoring deprecated oldalloc option");
- break;
- case Opt_orlov:
- ext4_msg(sb, KERN_WARNING,
- "Ignoring deprecated orlov option");
- break;
+#define MOPT_DATAJ 0x0080
+
+static const struct mount_opts {
+ int token;
+ int mount_opt;
+ int flags;
+} ext4_mount_opts[] = {
+ {Opt_minix_df, EXT4_MOUNT_MINIX_DF, MOPT_SET},
+ {Opt_bsd_df, EXT4_MOUNT_MINIX_DF, MOPT_CLEAR},
+ {Opt_grpid, EXT4_MOUNT_GRPID, MOPT_SET},
+ {Opt_nogrpid, EXT4_MOUNT_GRPID, MOPT_CLEAR},
+ {Opt_mblk_io_submit, EXT4_MOUNT_MBLK_IO_SUBMIT, MOPT_SET},
+ {Opt_nomblk_io_submit, EXT4_MOUNT_MBLK_IO_SUBMIT, MOPT_CLEAR},
+ {Opt_block_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_SET},
+ {Opt_noblock_validity, EXT4_MOUNT_BLOCK_VALIDITY, MOPT_CLEAR},
+ {Opt_dioread_nolock, EXT4_MOUNT_DIOREAD_NOLOCK, MOPT_SET},
+ {Opt_dioread_lock, EXT4_MOUNT_DIOREAD_NOLOCK, MOPT_CLEAR},
+ {Opt_discard, EXT4_MOUNT_DISCARD, MOPT_SET},
+ {Opt_nodiscard, EXT4_MOUNT_DISCARD, MOPT_CLEAR},
+ {Opt_delalloc, EXT4_MOUNT_DELALLOC, MOPT_SET | MOPT_EXPLICIT},
+ {Opt_nodelalloc, EXT4_MOUNT_DELALLOC, MOPT_CLEAR | MOPT_EXPLICIT},
+ {Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM, MOPT_SET},
+ {Opt_journal_async_commit, (EXT4_MOUNT_JOURNAL_ASYNC_COMMIT |
+ EXT4_MOUNT_JOURNAL_CHECKSUM), MOPT_SET},
+ {Opt_noload, EXT4_MOUNT_NOLOAD, MOPT_SET},
+ {Opt_err_panic, EXT4_MOUNT_ERRORS_PANIC, MOPT_SET | MOPT_CLEAR_ERR},
+ {Opt_err_ro, EXT4_MOUNT_ERRORS_RO, MOPT_SET | MOPT_CLEAR_ERR},
+ {Opt_err_cont, EXT4_MOUNT_ERRORS_CONT, MOPT_SET | MOPT_CLEAR_ERR},
+ {Opt_data_err_abort, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_SET},
+ {Opt_data_err_ignore, EXT4_MOUNT_DATA_ERR_ABORT, MOPT_CLEAR},
+ {Opt_barrier, EXT4_MOUNT_BARRIER, MOPT_SET},
+ {Opt_nobarrier, EXT4_MOUNT_BARRIER, MOPT_CLEAR},
+ {Opt_noauto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_SET},
+ {Opt_auto_da_alloc, EXT4_MOUNT_NO_AUTO_DA_ALLOC, MOPT_CLEAR},
+ {Opt_noinit_itable, EXT4_MOUNT_INIT_INODE_TABLE, MOPT_CLEAR},
+ {Opt_commit, 0, MOPT_GTE0},
+ {Opt_max_batch_time, 0, MOPT_GTE0},
+ {Opt_min_batch_time, 0, MOPT_GTE0},
+ {Opt_inode_readahead_blks, 0, MOPT_GTE0},
+ {Opt_init_itable, 0, MOPT_GTE0},
+ {Opt_stripe, 0, MOPT_GTE0},
+ {Opt_data_journal, EXT4_MOUNT_JOURNAL_DATA, MOPT_DATAJ},
+ {Opt_data_ordered, EXT4_MOUNT_ORDERED_DATA, MOPT_DATAJ},
+ {Opt_data_writeback, EXT4_MOUNT_WRITEBACK_DATA, MOPT_DATAJ},
#ifdef CONFIG_EXT4_FS_XATTR
- case Opt_user_xattr:
- set_opt(sb, XATTR_USER);
- break;
- case Opt_nouser_xattr:
- clear_opt(sb, XATTR_USER);
- break;
+ {Opt_user_xattr, EXT4_MOUNT_XATTR_USER, MOPT_SET},
+ {Opt_nouser_xattr, EXT4_MOUNT_XATTR_USER, MOPT_CLEAR},
#else
- case Opt_user_xattr:
- case Opt_nouser_xattr:
- ext4_msg(sb, KERN_ERR, "(no)user_xattr options not supported");
- break;
+ {Opt_user_xattr, 0, MOPT_NOSUPPORT},
+ {Opt_nouser_xattr, 0, MOPT_NOSUPPORT},
#endif
#ifdef CONFIG_EXT4_FS_POSIX_ACL
- case Opt_acl:
- set_opt(sb, POSIX_ACL);
- break;
- case Opt_noacl:
- clear_opt(sb, POSIX_ACL);
- break;
+ {Opt_acl, EXT4_MOUNT_POSIX_ACL, MOPT_SET},
+ {Opt_noacl, EXT4_MOUNT_POSIX_ACL, MOPT_CLEAR},
#else
- case Opt_acl:
- case Opt_noacl:
- ext4_msg(sb, KERN_ERR, "(no)acl options not supported");
- break;
+ {Opt_acl, 0, MOPT_NOSUPPORT},
+ {Opt_noacl, 0, MOPT_NOSUPPORT},
#endif
- case Opt_journal_update:
- /* @@@ FIXME */
- /* Eventually we will want to be able to create
- a journal file here. For now, only allow the
- user to specify an existing inode to be the
- journal file. */
- if (is_remount) {
- ext4_msg(sb, KERN_ERR,
- "Cannot specify journal on remount");
- return 0;
- }
- set_opt(sb, UPDATE_JOURNAL);
- break;
- case Opt_journal_dev:
- if (is_remount) {
+ {Opt_nouid32, EXT4_MOUNT_NO_UID32, MOPT_SET},
+ {Opt_debug, EXT4_MOUNT_DEBUG, MOPT_SET},
+ {Opt_quota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA, MOPT_SET | MOPT_Q},
+ {Opt_usrquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA,
+ MOPT_SET | MOPT_Q},
+ {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA,
+ MOPT_SET | MOPT_Q},
+ {Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA |
+ EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q},
+ {Opt_usrjquota, 0, MOPT_Q},
+ {Opt_grpjquota, 0, MOPT_Q},
+ {Opt_offusrjquota, 0, MOPT_Q},
+ {Opt_offgrpjquota, 0, MOPT_Q},
+ {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT},
+ {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT},
+ {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT},
+ {Opt_err, 0, 0}
+};
+
+static int handle_mount_opt(struct super_block *sb, char *opt, int token,
+ substring_t *args, unsigned long *journal_devnum,
+ unsigned int *journal_ioprio, int is_remount)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ const struct mount_opts *m;
+ int arg = 0;
+
+ if (args->from && match_int(args, &arg))
+ return -1;
+ switch (token) {
+ case Opt_noacl:
+ case Opt_nouser_xattr:
+ ext4_msg(sb, KERN_WARNING, deprecated_msg, opt, "3.5");
+ break;
+ case Opt_sb:
+ return 1; /* handled by get_sb_block() */
+ case Opt_removed:
+ ext4_msg(sb, KERN_WARNING,
+ "Ignoring removed %s option", opt);
+ return 1;
+ case Opt_resuid:
+ sbi->s_resuid = arg;
+ return 1;
+ case Opt_resgid:
+ sbi->s_resgid = arg;
+ return 1;
+ case Opt_abort:
+ sbi->s_mount_flags |= EXT4_MF_FS_ABORTED;
+ return 1;
+ case Opt_i_version:
+ sb->s_flags |= MS_I_VERSION;
+ return 1;
+ case Opt_journal_dev:
+ if (is_remount) {
+ ext4_msg(sb, KERN_ERR,
+ "Cannot specify journal on remount");
+ return -1;
+ }
+ *journal_devnum = arg;
+ return 1;
+ case Opt_journal_ioprio:
+ if (arg < 0 || arg > 7)
+ return -1;
+ *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, arg);
+ return 1;
+ }
+
+ for (m = ext4_mount_opts; m->token != Opt_err; m++) {
+ if (token != m->token)
+ continue;
+ if (args->from && (m->flags & MOPT_GTE0) && (arg < 0))
+ return -1;
+ if (m->flags & MOPT_EXPLICIT)
+ set_opt2(sb, EXPLICIT_DELALLOC);
+ if (m->flags & MOPT_CLEAR_ERR)
+ clear_opt(sb, ERRORS_MASK);
+ if (token == Opt_noquota && sb_any_quota_loaded(sb)) {
+ ext4_msg(sb, KERN_ERR, "Cannot change quota "
+ "options when quota turned on");
+ return -1;
+ }
+
+ if (m->flags & MOPT_NOSUPPORT) {
+ ext4_msg(sb, KERN_ERR, "%s option not supported", opt);
+ } else if (token == Opt_commit) {
+ if (arg == 0)
+ arg = JBD2_DEFAULT_MAX_COMMIT_AGE;
+ sbi->s_commit_interval = HZ * arg;
+ } else if (token == Opt_max_batch_time) {
+ if (arg == 0)
+ arg = EXT4_DEF_MAX_BATCH_TIME;
+ sbi->s_max_batch_time = arg;
+ } else if (token == Opt_min_batch_time) {
+ sbi->s_min_batch_time = arg;
+ } else if (token == Opt_inode_readahead_blks) {
+ if (arg > (1 << 30))
+ return -1;
+ if (arg && !is_power_of_2(arg)) {
ext4_msg(sb, KERN_ERR,
- "Cannot specify journal on remount");
- return 0;
+ "EXT4-fs: inode_readahead_blks"
+ " must be a power of 2");
+ return -1;
}
- if (match_int(&args[0], &option))
- return 0;
- *journal_devnum = option;
- break;
- case Opt_journal_checksum:
- set_opt(sb, JOURNAL_CHECKSUM);
- break;
- case Opt_journal_async_commit:
- set_opt(sb, JOURNAL_ASYNC_COMMIT);
- set_opt(sb, JOURNAL_CHECKSUM);
- break;
- case Opt_noload:
- set_opt(sb, NOLOAD);
- break;
- case Opt_commit:
- if (match_int(&args[0], &option))
- return 0;
- if (option < 0)
- return 0;
- if (option == 0)
- option = JBD2_DEFAULT_MAX_COMMIT_AGE;
- sbi->s_commit_interval = HZ * option;
- break;
- case Opt_max_batch_time:
- if (match_int(&args[0], &option))
- return 0;
- if (option < 0)
- return 0;
- if (option == 0)
- option = EXT4_DEF_MAX_BATCH_TIME;
- sbi->s_max_batch_time = option;
- break;
- case Opt_min_batch_time:
- if (match_int(&args[0], &option))
- return 0;
- if (option < 0)
- return 0;
- sbi->s_min_batch_time = option;
- break;
- case Opt_data_journal:
- data_opt = EXT4_MOUNT_JOURNAL_DATA;
- goto datacheck;
- case Opt_data_ordered:
- data_opt = EXT4_MOUNT_ORDERED_DATA;
- goto datacheck;
- case Opt_data_writeback:
- data_opt = EXT4_MOUNT_WRITEBACK_DATA;
- datacheck:
+ sbi->s_inode_readahead_blks = arg;
+ } else if (token == Opt_init_itable) {
+ set_opt(sb, INIT_INODE_TABLE);
+ if (!args->from)
+ arg = EXT4_DEF_LI_WAIT_MULT;
+ sbi->s_li_wait_mult = arg;
+ } else if (token == Opt_stripe) {
+ sbi->s_stripe = arg;
+ } else if (m->flags & MOPT_DATAJ) {
if (is_remount) {
if (!sbi->s_journal)
ext4_msg(sb, KERN_WARNING, "Remounting file system with no journal so ignoring journalled data option");
- else if (test_opt(sb, DATA_FLAGS) != data_opt) {
+ else if (test_opt(sb, DATA_FLAGS) !=
+ m->mount_opt) {
ext4_msg(sb, KERN_ERR,
- "Cannot change data mode on remount");
- return 0;
+ "Cannot change data mode on remount");
+ return -1;
}
} else {
clear_opt(sb, DATA_FLAGS);
- sbi->s_mount_opt |= data_opt;
+ sbi->s_mount_opt |= m->mount_opt;
}
- break;
- case Opt_data_err_abort:
- set_opt(sb, DATA_ERR_ABORT);
- break;
- case Opt_data_err_ignore:
- clear_opt(sb, DATA_ERR_ABORT);
- break;
#ifdef CONFIG_QUOTA
- case Opt_usrjquota:
+ } else if (token == Opt_usrjquota) {
if (!set_qf_name(sb, USRQUOTA, &args[0]))
- return 0;
- break;
- case Opt_grpjquota:
+ return -1;
+ } else if (token == Opt_grpjquota) {
if (!set_qf_name(sb, GRPQUOTA, &args[0]))
- return 0;
- break;
- case Opt_offusrjquota:
+ return -1;
+ } else if (token == Opt_offusrjquota) {
if (!clear_qf_name(sb, USRQUOTA))
- return 0;
- break;
- case Opt_offgrpjquota:
+ return -1;
+ } else if (token == Opt_offgrpjquota) {
if (!clear_qf_name(sb, GRPQUOTA))
- return 0;
- break;
-
- case Opt_jqfmt_vfsold:
- qfmt = QFMT_VFS_OLD;
- goto set_qf_format;
- case Opt_jqfmt_vfsv0:
- qfmt = QFMT_VFS_V0;
- goto set_qf_format;
- case Opt_jqfmt_vfsv1:
- qfmt = QFMT_VFS_V1;
-set_qf_format:
+ return -1;
+ } else if (m->flags & MOPT_QFMT) {
if (sb_any_quota_loaded(sb) &&
- sbi->s_jquota_fmt != qfmt) {
- ext4_msg(sb, KERN_ERR, "Cannot change "
- "journaled quota options when "
- "quota turned on");
- return 0;
- }
- sbi->s_jquota_fmt = qfmt;
- break;
- case Opt_quota:
- case Opt_usrquota:
- set_opt(sb, QUOTA);
- set_opt(sb, USRQUOTA);
- break;
- case Opt_grpquota:
- set_opt(sb, QUOTA);
- set_opt(sb, GRPQUOTA);
- break;
- case Opt_noquota:
- if (sb_any_quota_loaded(sb)) {
- ext4_msg(sb, KERN_ERR, "Cannot change quota "
- "options when quota turned on");
- return 0;
+ sbi->s_jquota_fmt != m->mount_opt) {
+ ext4_msg(sb, KERN_ERR, "Cannot "
+ "change journaled quota options "
+ "when quota turned on");
+ return -1;
}
- clear_opt(sb, QUOTA);
- clear_opt(sb, USRQUOTA);
- clear_opt(sb, GRPQUOTA);
- break;
-#else
- case Opt_quota:
- case Opt_usrquota:
- case Opt_grpquota:
- ext4_msg(sb, KERN_ERR,
- "quota options not supported");
- break;
- case Opt_usrjquota:
- case Opt_grpjquota:
- case Opt_offusrjquota:
- case Opt_offgrpjquota:
- case Opt_jqfmt_vfsold:
- case Opt_jqfmt_vfsv0:
- case Opt_jqfmt_vfsv1:
- ext4_msg(sb, KERN_ERR,
- "journaled quota options not supported");
- break;
- case Opt_noquota:
- break;
+ sbi->s_jquota_fmt = m->mount_opt;
#endif
- case Opt_abort:
- sbi->s_mount_flags |= EXT4_MF_FS_ABORTED;
- break;
- case Opt_nobarrier:
- clear_opt(sb, BARRIER);
- break;
- case Opt_barrier:
- if (args[0].from) {
- if (match_int(&args[0], &option))
- return 0;
- } else
- option = 1; /* No argument, default to 1 */
- if (option)
- set_opt(sb, BARRIER);
- else
- clear_opt(sb, BARRIER);
- break;
- case Opt_ignore:
- break;
- case Opt_resize:
- if (!is_remount) {
- ext4_msg(sb, KERN_ERR,
- "resize option only available "
- "for remount");
- return 0;
- }
- if (match_int(&args[0], &option) != 0)
- return 0;
- *n_blocks_count = option;
- break;
- case Opt_nobh:
- ext4_msg(sb, KERN_WARNING,
- "Ignoring deprecated nobh option");
- break;
- case Opt_bh:
- ext4_msg(sb, KERN_WARNING,
- "Ignoring deprecated bh option");
- break;
- case Opt_i_version:
- set_opt(sb, I_VERSION);
- sb->s_flags |= MS_I_VERSION;
- break;
- case Opt_nodelalloc:
- clear_opt(sb, DELALLOC);
- clear_opt2(sb, EXPLICIT_DELALLOC);
- break;
- case Opt_mblk_io_submit:
- set_opt(sb, MBLK_IO_SUBMIT);
- break;
- case Opt_nomblk_io_submit:
- clear_opt(sb, MBLK_IO_SUBMIT);
- break;
- case Opt_stripe:
- if (match_int(&args[0], &option))
- return 0;
- if (option < 0)
- return 0;
- sbi->s_stripe = option;
- break;
- case Opt_delalloc:
- set_opt(sb, DELALLOC);
- set_opt2(sb, EXPLICIT_DELALLOC);
- break;
- case Opt_block_validity:
- set_opt(sb, BLOCK_VALIDITY);
- break;
- case Opt_noblock_validity:
- clear_opt(sb, BLOCK_VALIDITY);
- break;
- case Opt_inode_readahead_blks:
- if (match_int(&args[0], &option))
- return 0;
- if (option < 0 || option > (1 << 30))
- return 0;
- if (option && !is_power_of_2(option)) {
- ext4_msg(sb, KERN_ERR,
- "EXT4-fs: inode_readahead_blks"
- " must be a power of 2");
- return 0;
+ } else {
+ if (!args->from)
+ arg = 1;
+ if (m->flags & MOPT_CLEAR)
+ arg = !arg;
+ else if (unlikely(!(m->flags & MOPT_SET))) {
+ ext4_msg(sb, KERN_WARNING,
+ "buggy handling of option %s", opt);
+ WARN_ON(1);
+ return -1;
}
- sbi->s_inode_readahead_blks = option;
- break;
- case Opt_journal_ioprio:
- if (match_int(&args[0], &option))
- return 0;
- if (option < 0 || option > 7)
- break;
- *journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE,
- option);
- break;
- case Opt_noauto_da_alloc:
- set_opt(sb, NO_AUTO_DA_ALLOC);
- break;
- case Opt_auto_da_alloc:
- if (args[0].from) {
- if (match_int(&args[0], &option))
- return 0;
- } else
- option = 1; /* No argument, default to 1 */
- if (option)
- clear_opt(sb, NO_AUTO_DA_ALLOC);
+ if (arg != 0)
+ sbi->s_mount_opt |= m->mount_opt;
else
- set_opt(sb,NO_AUTO_DA_ALLOC);
- break;
- case Opt_discard:
- set_opt(sb, DISCARD);
- break;
- case Opt_nodiscard:
- clear_opt(sb, DISCARD);
- break;
- case Opt_dioread_nolock:
- set_opt(sb, DIOREAD_NOLOCK);
- break;
- case Opt_dioread_lock:
- clear_opt(sb, DIOREAD_NOLOCK);
- break;
- case Opt_init_itable:
- set_opt(sb, INIT_INODE_TABLE);
- if (args[0].from) {
- if (match_int(&args[0], &option))
- return 0;
- } else
- option = EXT4_DEF_LI_WAIT_MULT;
- if (option < 0)
- return 0;
- sbi->s_li_wait_mult = option;
- break;
- case Opt_noinit_itable:
- clear_opt(sb, INIT_INODE_TABLE);
- break;
- default:
- ext4_msg(sb, KERN_ERR,
- "Unrecognized mount option \"%s\" "
- "or missing value", p);
- return 0;
+ sbi->s_mount_opt &= ~m->mount_opt;
}
+ return 1;
+ }
+ ext4_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" "
+ "or missing value", opt);
+ return -1;
+}
+
+static int parse_options(char *options, struct super_block *sb,
+ unsigned long *journal_devnum,
+ unsigned int *journal_ioprio,
+ int is_remount)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ char *p;
+ substring_t args[MAX_OPT_ARGS];
+ int token;
+
+ if (!options)
+ return 1;
+
+ while ((p = strsep(&options, ",")) != NULL) {
+ if (!*p)
+ continue;
+ /*
+ * Initialize args struct so we know whether arg was
+ * found; some options take optional arguments.
+ */
+ args[0].to = args[0].from = 0;
+ token = match_token(p, tokens, args);
+ if (handle_mount_opt(sb, p, token, args, journal_devnum,
+ journal_ioprio, is_remount) < 0)
+ return 0;
}
#ifdef CONFIG_QUOTA
if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
@@ -1942,6 +1651,160 @@ static int parse_options(char *options, struct super_block *sb,
return 1;
}
+static inline void ext4_show_quota_options(struct seq_file *seq,
+ struct super_block *sb)
+{
+#if defined(CONFIG_QUOTA)
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ if (sbi->s_jquota_fmt) {
+ char *fmtname = "";
+
+ switch (sbi->s_jquota_fmt) {
+ case QFMT_VFS_OLD:
+ fmtname = "vfsold";
+ break;
+ case QFMT_VFS_V0:
+ fmtname = "vfsv0";
+ break;
+ case QFMT_VFS_V1:
+ fmtname = "vfsv1";
+ break;
+ }
+ seq_printf(seq, ",jqfmt=%s", fmtname);
+ }
+
+ if (sbi->s_qf_names[USRQUOTA])
+ seq_printf(seq, ",usrjquota=%s", sbi->s_qf_names[USRQUOTA]);
+
+ if (sbi->s_qf_names[GRPQUOTA])
+ seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
+
+ if (test_opt(sb, USRQUOTA))
+ seq_puts(seq, ",usrquota");
+
+ if (test_opt(sb, GRPQUOTA))
+ seq_puts(seq, ",grpquota");
+#endif
+}
+
+static const char *token2str(int token)
+{
+ static const struct match_token *t;
+
+ for (t = tokens; t->token != Opt_err; t++)
+ if (t->token == token && !strchr(t->pattern, '='))
+ break;
+ return t->pattern;
+}
+
+/*
+ * Show an option if
+ * - it's set to a non-default value OR
+ * - if the per-sb default is different from the global default
+ */
+static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
+ int nodefs)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_super_block *es = sbi->s_es;
+ int def_errors, def_mount_opt = nodefs ? 0 : sbi->s_def_mount_opt;
+ const struct mount_opts *m;
+ char sep = nodefs ? '\n' : ',';
+
+#define SEQ_OPTS_PUTS(str) seq_printf(seq, "%c" str, sep)
+#define SEQ_OPTS_PRINT(str, arg) seq_printf(seq, "%c" str, sep, arg)
+
+ if (sbi->s_sb_block != 1)
+ SEQ_OPTS_PRINT("sb=%llu", sbi->s_sb_block);
+
+ for (m = ext4_mount_opts; m->token != Opt_err; m++) {
+ int want_set = m->flags & MOPT_SET;
+ if (((m->flags & (MOPT_SET|MOPT_CLEAR)) == 0) ||
+ (m->flags & MOPT_CLEAR_ERR))
+ continue;
+ if (!(m->mount_opt & (sbi->s_mount_opt ^ def_mount_opt)))
+ continue; /* skip if same as the default */
+ if ((want_set &&
+ (sbi->s_mount_opt & m->mount_opt) != m->mount_opt) ||
+ (!want_set && (sbi->s_mount_opt & m->mount_opt)))
+ continue; /* select Opt_noFoo vs Opt_Foo */
+ SEQ_OPTS_PRINT("%s", token2str(m->token));
+ }
+
+ if (nodefs || sbi->s_resuid != EXT4_DEF_RESUID ||
+ le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID)
+ SEQ_OPTS_PRINT("resuid=%u", sbi->s_resuid);
+ if (nodefs || sbi->s_resgid != EXT4_DEF_RESGID ||
+ le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID)
+ SEQ_OPTS_PRINT("resgid=%u", sbi->s_resgid);
+ def_errors = nodefs ? -1 : le16_to_cpu(es->s_errors);
+ if (test_opt(sb, ERRORS_RO) && def_errors != EXT4_ERRORS_RO)
+ SEQ_OPTS_PUTS("errors=remount-ro");
+ if (test_opt(sb, ERRORS_CONT) && def_errors != EXT4_ERRORS_CONTINUE)
+ SEQ_OPTS_PUTS("errors=continue");
+ if (test_opt(sb, ERRORS_PANIC) && def_errors != EXT4_ERRORS_PANIC)
+ SEQ_OPTS_PUTS("errors=panic");
+ if (nodefs || sbi->s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE*HZ)
+ SEQ_OPTS_PRINT("commit=%lu", sbi->s_commit_interval / HZ);
+ if (nodefs || sbi->s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME)
+ SEQ_OPTS_PRINT("min_batch_time=%u", sbi->s_min_batch_time);
+ if (nodefs || sbi->s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME)
+ SEQ_OPTS_PRINT("max_batch_time=%u", sbi->s_max_batch_time);
+ if (sb->s_flags & MS_I_VERSION)
+ SEQ_OPTS_PUTS("i_version");
+ if (nodefs || sbi->s_stripe)
+ SEQ_OPTS_PRINT("stripe=%lu", sbi->s_stripe);
+ if (EXT4_MOUNT_DATA_FLAGS & (sbi->s_mount_opt ^ def_mount_opt)) {
+ if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
+ SEQ_OPTS_PUTS("data=journal");
+ else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
+ SEQ_OPTS_PUTS("data=ordered");
+ else if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
+ SEQ_OPTS_PUTS("data=writeback");
+ }
+ if (nodefs ||
+ sbi->s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS)
+ SEQ_OPTS_PRINT("inode_readahead_blks=%u",
+ sbi->s_inode_readahead_blks);
+
+ if (nodefs || (test_opt(sb, INIT_INODE_TABLE) &&
+ (sbi->s_li_wait_mult != EXT4_DEF_LI_WAIT_MULT)))
+ SEQ_OPTS_PRINT("init_itable=%u", sbi->s_li_wait_mult);
+
+ ext4_show_quota_options(seq, sb);
+ return 0;
+}
+
+static int ext4_show_options(struct seq_file *seq, struct dentry *root)
+{
+ return _ext4_show_options(seq, root->d_sb, 0);
+}
+
+static int options_seq_show(struct seq_file *seq, void *offset)
+{
+ struct super_block *sb = seq->private;
+ int rc;
+
+ seq_puts(seq, (sb->s_flags & MS_RDONLY) ? "ro" : "rw");
+ rc = _ext4_show_options(seq, sb, 1);
+ seq_puts(seq, "\n");
+ return rc;
+}
+
+static int options_open_fs(struct inode *inode, struct file *file)
+{
+ return single_open(file, options_seq_show, PDE(inode)->data);
+}
+
+static const struct file_operations ext4_seq_options_fops = {
+ .owner = THIS_MODULE,
+ .open = options_open_fs,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
int read_only)
{
@@ -2945,7 +2808,7 @@ static int ext4_run_lazyinit_thread(void)
ext4_clear_request_list();
kfree(ext4_li_info);
ext4_li_info = NULL;
- printk(KERN_CRIT "EXT4: error %d creating inode table "
+ printk(KERN_CRIT "EXT4-fs: error %d creating inode table "
"initialization thread\n",
err);
return err;
@@ -3183,11 +3046,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
set_opt(sb, INIT_INODE_TABLE);
if (def_mount_opts & EXT4_DEFM_DEBUG)
set_opt(sb, DEBUG);
- if (def_mount_opts & EXT4_DEFM_BSDGROUPS) {
- ext4_msg(sb, KERN_WARNING, deprecated_msg, "bsdgroups",
- "2.6.38");
+ if (def_mount_opts & EXT4_DEFM_BSDGROUPS)
set_opt(sb, GRPID);
- }
if (def_mount_opts & EXT4_DEFM_UID16)
set_opt(sb, NO_UID32);
/* xattr user namespace & acls are now defaulted on */
@@ -3240,13 +3100,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
if (!parse_options((char *) sbi->s_es->s_mount_opts, sb,
- &journal_devnum, &journal_ioprio, NULL, 0)) {
+ &journal_devnum, &journal_ioprio, 0)) {
ext4_msg(sb, KERN_WARNING,
"failed to parse options in superblock: %s",
sbi->s_es->s_mount_opts);
}
+ sbi->s_def_mount_opt = sbi->s_mount_opt;
if (!parse_options((char *) data, sb, &journal_devnum,
- &journal_ioprio, NULL, 0))
+ &journal_ioprio, 0))
goto failed_mount;
if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
@@ -3416,7 +3277,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
#else
es->s_flags |= cpu_to_le32(EXT2_FLAGS_SIGNED_HASH);
#endif
- sb->s_dirt = 1;
}
/* Handle clustersize */
@@ -3540,6 +3400,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (ext4_proc_root)
sbi->s_proc = proc_mkdir(sb->s_id, ext4_proc_root);
+ if (sbi->s_proc)
+ proc_create_data("options", S_IRUGO, sbi->s_proc,
+ &ext4_seq_options_fops, sb);
+
bgl_lock_init(sbi->s_blockgroup_lock);
for (i = 0; i < db_count; i++) {
@@ -3694,6 +3558,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
}
set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
+ sbi->s_journal->j_commit_callback = ext4_journal_commit_callback;
+
/*
* The journal may have updated the bg summary counts, so we
* need to update the global counters.
@@ -3861,6 +3727,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
ext4_kvfree(sbi->s_group_desc);
failed_mount:
if (sbi->s_proc) {
+ remove_proc_entry("options", sbi->s_proc);
remove_proc_entry(sb->s_id, ext4_proc_root);
}
#ifdef CONFIG_QUOTA
@@ -4090,15 +3957,6 @@ static int ext4_load_journal(struct super_block *sb,
if (!(journal->j_flags & JBD2_BARRIER))
ext4_msg(sb, KERN_INFO, "barriers disabled");
- if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {
- err = jbd2_journal_update_format(journal);
- if (err) {
- ext4_msg(sb, KERN_ERR, "error updating journal");
- jbd2_journal_destroy(journal);
- return err;
- }
- }
-
if (!EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER))
err = jbd2_journal_wipe(journal, !really_read_only);
if (!err) {
@@ -4385,7 +4243,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
{
struct ext4_super_block *es;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- ext4_fsblk_t n_blocks_count = 0;
unsigned long old_sb_flags;
struct ext4_mount_options old_opts;
int enable_quota = 0;
@@ -4418,8 +4275,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
/*
* Allow the "check" option to be passed as a remount option.
*/
- if (!parse_options(data, sb, NULL, &journal_ioprio,
- &n_blocks_count, 1)) {
+ if (!parse_options(data, sb, NULL, &journal_ioprio, 1)) {
err = -EINVAL;
goto restore_opts;
}
@@ -4437,8 +4293,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
}
- if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) ||
- n_blocks_count > ext4_blocks_count(es)) {
+ if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
err = -EROFS;
goto restore_opts;
@@ -4513,8 +4368,6 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
if (sbi->s_journal)
ext4_clear_journal_err(sb, es);
sbi->s_mount_state = le16_to_cpu(es->s_state);
- if ((err = ext4_group_extend(sb, es, n_blocks_count)))
- goto restore_opts;
if (!ext4_setup_super(sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
if (EXT4_HAS_INCOMPAT_FEATURE(sb,
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 93a00d89a220d4085c64e9d427c375e9ada76494..e88748e55c0f246e90ca21c2094303719f83df07 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -82,8 +82,8 @@
printk("\n"); \
} while (0)
#else
-# define ea_idebug(f...)
-# define ea_bdebug(f...)
+# define ea_idebug(inode, fmt, ...) no_printk(fmt, ##__VA_ARGS__)
+# define ea_bdebug(bh, fmt, ...) no_printk(fmt, ##__VA_ARGS__)
#endif
static void ext4_xattr_cache_insert(struct buffer_head *);
@@ -158,13 +158,10 @@ ext4_xattr_check_names(struct ext4_xattr_entry *entry, void *end)
static inline int
ext4_xattr_check_block(struct buffer_head *bh)
{
- int error;
-
if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
BHDR(bh)->h_blocks != cpu_to_le32(1))
return -EIO;
- error = ext4_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size);
- return error;
+ return ext4_xattr_check_names(BFIRST(bh), bh->b_data + bh->b_size);
}
static inline int
@@ -220,7 +217,8 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
error = -ENODATA;
if (!EXT4_I(inode)->i_file_acl)
goto cleanup;
- ea_idebug(inode, "reading block %u", EXT4_I(inode)->i_file_acl);
+ ea_idebug(inode, "reading block %llu",
+ (unsigned long long)EXT4_I(inode)->i_file_acl);
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
if (!bh)
goto cleanup;
@@ -363,7 +361,8 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
error = 0;
if (!EXT4_I(inode)->i_file_acl)
goto cleanup;
- ea_idebug(inode, "reading block %u", EXT4_I(inode)->i_file_acl);
+ ea_idebug(inode, "reading block %llu",
+ (unsigned long long)EXT4_I(inode)->i_file_acl);
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
error = -EIO;
if (!bh)
@@ -487,18 +486,19 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode,
ext4_free_blocks(handle, inode, bh, 0, 1,
EXT4_FREE_BLOCKS_METADATA |
EXT4_FREE_BLOCKS_FORGET);
+ unlock_buffer(bh);
} else {
le32_add_cpu(&BHDR(bh)->h_refcount, -1);
+ if (ce)
+ mb_cache_entry_release(ce);
+ unlock_buffer(bh);
error = ext4_handle_dirty_metadata(handle, inode, bh);
if (IS_SYNC(inode))
ext4_handle_sync(handle);
dquot_free_block(inode, 1);
ea_bdebug(bh, "refcount now=%d; releasing",
le32_to_cpu(BHDR(bh)->h_refcount));
- if (ce)
- mb_cache_entry_release(ce);
}
- unlock_buffer(bh);
out:
ext4_std_error(inode->i_sb, error);
return;
@@ -834,7 +834,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
BUG_ON(block > EXT4_MAX_BLOCK_FILE_PHYS);
- ea_idebug(inode, "creating block %d", block);
+ ea_idebug(inode, "creating block %llu",
+ (unsigned long long)block);
new_bh = sb_getblk(sb, block);
if (!new_bh) {
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index d49d202903fb13cb9e8b663c1c6aea181f38d37a..c78841ee81cf31a0c4c67a23bca294a32720cb5f 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -88,14 +88,13 @@ static inline void __buffer_relink_io(struct journal_head *jh)
* whole transaction.
*
* Requires j_list_lock
- * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
*/
static int __try_to_free_cp_buf(struct journal_head *jh)
{
int ret = 0;
struct buffer_head *bh = jh2bh(jh);
- if (jh->b_jlist == BJ_None && !buffer_locked(bh) &&
+ if (jh->b_transaction == NULL && !buffer_locked(bh) &&
!buffer_dirty(bh) && !buffer_write_io_error(bh)) {
/*
* Get our reference so that bh cannot be freed before
@@ -104,11 +103,8 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
get_bh(bh);
JBUFFER_TRACE(jh, "remove from checkpoint list");
ret = __jbd2_journal_remove_checkpoint(jh) + 1;
- jbd_unlock_bh_state(bh);
BUFFER_TRACE(bh, "release");
__brelse(bh);
- } else {
- jbd_unlock_bh_state(bh);
}
return ret;
}
@@ -179,21 +175,6 @@ void __jbd2_log_wait_for_space(journal_t *journal)
}
}
-/*
- * We were unable to perform jbd_trylock_bh_state() inside j_list_lock.
- * The caller must restart a list walk. Wait for someone else to run
- * jbd_unlock_bh_state().
- */
-static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh)
- __releases(journal->j_list_lock)
-{
- get_bh(bh);
- spin_unlock(&journal->j_list_lock);
- jbd_lock_bh_state(bh);
- jbd_unlock_bh_state(bh);
- put_bh(bh);
-}
-
/*
* Clean up transaction's list of buffers submitted for io.
* We wait for any pending IO to complete and remove any clean
@@ -222,15 +203,9 @@ static int __wait_cp_io(journal_t *journal, transaction_t *transaction)
while (!released && transaction->t_checkpoint_io_list) {
jh = transaction->t_checkpoint_io_list;
bh = jh2bh(jh);
- if (!jbd_trylock_bh_state(bh)) {
- jbd_sync_bh(journal, bh);
- spin_lock(&journal->j_list_lock);
- goto restart;
- }
get_bh(bh);
if (buffer_locked(bh)) {
spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
wait_on_buffer(bh);
/* the journal_head may have gone by now */
BUFFER_TRACE(bh, "brelse");
@@ -246,7 +221,6 @@ static int __wait_cp_io(journal_t *journal, transaction_t *transaction)
* it has been written out and so we can drop it from the list
*/
released = __jbd2_journal_remove_checkpoint(jh);
- jbd_unlock_bh_state(bh);
__brelse(bh);
}
@@ -266,7 +240,6 @@ __flush_batch(journal_t *journal, int *batch_count)
for (i = 0; i < *batch_count; i++) {
struct buffer_head *bh = journal->j_chkpt_bhs[i];
- clear_buffer_jwrite(bh);
BUFFER_TRACE(bh, "brelse");
__brelse(bh);
}
@@ -281,7 +254,6 @@ __flush_batch(journal_t *journal, int *batch_count)
* be written out.
*
* Called with j_list_lock held and drops it if 1 is returned
- * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
*/
static int __process_buffer(journal_t *journal, struct journal_head *jh,
int *batch_count, transaction_t *transaction)
@@ -292,7 +264,6 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
if (buffer_locked(bh)) {
get_bh(bh);
spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
wait_on_buffer(bh);
/* the journal_head may have gone by now */
BUFFER_TRACE(bh, "brelse");
@@ -304,7 +275,6 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
transaction->t_chp_stats.cs_forced_to_close++;
spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
if (unlikely(journal->j_flags & JBD2_UNMOUNT))
/*
* The journal thread is dead; so starting and
@@ -323,11 +293,9 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
if (unlikely(buffer_write_io_error(bh)))
ret = -EIO;
get_bh(bh);
- J_ASSERT_JH(jh, !buffer_jbddirty(bh));
BUFFER_TRACE(bh, "remove from checkpoint");
__jbd2_journal_remove_checkpoint(jh);
spin_unlock(&journal->j_list_lock);
- jbd_unlock_bh_state(bh);
__brelse(bh);
} else {
/*
@@ -340,10 +308,8 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
BUFFER_TRACE(bh, "queue");
get_bh(bh);
J_ASSERT_BH(bh, !buffer_jwrite(bh));
- set_buffer_jwrite(bh);
journal->j_chkpt_bhs[*batch_count] = bh;
__buffer_relink_io(jh);
- jbd_unlock_bh_state(bh);
transaction->t_chp_stats.cs_written++;
(*batch_count)++;
if (*batch_count == JBD2_NR_BATCH) {
@@ -407,15 +373,7 @@ int jbd2_log_do_checkpoint(journal_t *journal)
int retry = 0, err;
while (!retry && transaction->t_checkpoint_list) {
- struct buffer_head *bh;
-
jh = transaction->t_checkpoint_list;
- bh = jh2bh(jh);
- if (!jbd_trylock_bh_state(bh)) {
- jbd_sync_bh(journal, bh);
- retry = 1;
- break;
- }
retry = __process_buffer(journal, jh, &batch_count,
transaction);
if (retry < 0 && !result)
@@ -478,79 +436,28 @@ int jbd2_log_do_checkpoint(journal_t *journal)
int jbd2_cleanup_journal_tail(journal_t *journal)
{
- transaction_t * transaction;
tid_t first_tid;
- unsigned long blocknr, freed;
+ unsigned long blocknr;
if (is_journal_aborted(journal))
return 1;
- /* OK, work out the oldest transaction remaining in the log, and
- * the log block it starts at.
- *
- * If the log is now empty, we need to work out which is the
- * next transaction ID we will write, and where it will
- * start. */
-
- write_lock(&journal->j_state_lock);
- spin_lock(&journal->j_list_lock);
- transaction = journal->j_checkpoint_transactions;
- if (transaction) {
- first_tid = transaction->t_tid;
- blocknr = transaction->t_log_start;
- } else if ((transaction = journal->j_committing_transaction) != NULL) {
- first_tid = transaction->t_tid;
- blocknr = transaction->t_log_start;
- } else if ((transaction = journal->j_running_transaction) != NULL) {
- first_tid = transaction->t_tid;
- blocknr = journal->j_head;
- } else {
- first_tid = journal->j_transaction_sequence;
- blocknr = journal->j_head;
- }
- spin_unlock(&journal->j_list_lock);
- J_ASSERT(blocknr != 0);
-
- /* If the oldest pinned transaction is at the tail of the log
- already then there's not much we can do right now. */
- if (journal->j_tail_sequence == first_tid) {
- write_unlock(&journal->j_state_lock);
+ if (!jbd2_journal_get_log_tail(journal, &first_tid, &blocknr))
return 1;
- }
-
- /* OK, update the superblock to recover the freed space.
- * Physical blocks come first: have we wrapped beyond the end of
- * the log? */
- freed = blocknr - journal->j_tail;
- if (blocknr < journal->j_tail)
- freed = freed + journal->j_last - journal->j_first;
-
- trace_jbd2_cleanup_journal_tail(journal, first_tid, blocknr, freed);
- jbd_debug(1,
- "Cleaning journal tail from %d to %d (offset %lu), "
- "freeing %lu\n",
- journal->j_tail_sequence, first_tid, blocknr, freed);
-
- journal->j_free += freed;
- journal->j_tail_sequence = first_tid;
- journal->j_tail = blocknr;
- write_unlock(&journal->j_state_lock);
+ J_ASSERT(blocknr != 0);
/*
- * If there is an external journal, we need to make sure that
- * any data blocks that were recently written out --- perhaps
- * by jbd2_log_do_checkpoint() --- are flushed out before we
- * drop the transactions from the external journal. It's
- * unlikely this will be necessary, especially with a
- * appropriately sized journal, but we need this to guarantee
- * correctness. Fortunately jbd2_cleanup_journal_tail()
- * doesn't get called all that often.
+ * We need to make sure that any blocks that were recently written out
+ * --- perhaps by jbd2_log_do_checkpoint() --- are flushed out before
+ * we drop the transactions from the journal. It's unlikely this will
+ * be necessary, especially with an appropriately sized journal, but we
+ * need this to guarantee correctness. Fortunately
+ * jbd2_cleanup_journal_tail() doesn't get called all that often.
*/
- if ((journal->j_fs_dev != journal->j_dev) &&
- (journal->j_flags & JBD2_BARRIER))
+ if (journal->j_flags & JBD2_BARRIER)
blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
- if (!(journal->j_flags & JBD2_ABORT))
- jbd2_journal_update_superblock(journal, 1);
+
+ __jbd2_update_log_tail(journal, first_tid, blocknr);
return 0;
}
@@ -582,15 +489,12 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
do {
jh = next_jh;
next_jh = jh->b_cpnext;
- /* Use trylock because of the ranking */
- if (jbd_trylock_bh_state(jh2bh(jh))) {
- ret = __try_to_free_cp_buf(jh);
- if (ret) {
- freed++;
- if (ret == 2) {
- *released = 1;
- return freed;
- }
+ ret = __try_to_free_cp_buf(jh);
+ if (ret) {
+ freed++;
+ if (ret == 2) {
+ *released = 1;
+ return freed;
}
}
/*
@@ -673,9 +577,7 @@ int __jbd2_journal_clean_checkpoint_list(journal_t *journal)
* The function can free jh and bh.
*
* This function is called with j_list_lock held.
- * This function is called with jbd_lock_bh_state(jh2bh(jh))
*/
-
int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
{
struct transaction_chp_stats_s *stats;
@@ -722,7 +624,7 @@ int __jbd2_journal_remove_checkpoint(struct journal_head *jh)
transaction->t_tid, stats);
__jbd2_journal_drop_transaction(journal, transaction);
- kfree(transaction);
+ jbd2_journal_free_transaction(transaction);
/* Just in case anybody was waiting for more transactions to be
checkpointed... */
@@ -797,5 +699,7 @@ void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transact
J_ASSERT(journal->j_committing_transaction != transaction);
J_ASSERT(journal->j_running_transaction != transaction);
+ trace_jbd2_drop_transaction(journal, transaction);
+
jbd_debug(1, "Dropping transaction %d, all done\n", transaction->t_tid);
}
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index c067a8cae63bf322067763ff02687ae24c216008..17f557f01cf0dd570dcd112e5d686fa072cd7498 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -331,6 +331,10 @@ void jbd2_journal_commit_transaction(journal_t *journal)
struct buffer_head *cbh = NULL; /* For transactional checksums */
__u32 crc32_sum = ~0;
struct blk_plug plug;
+ /* Tail of the journal */
+ unsigned long first_block;
+ tid_t first_tid;
+ int update_tail;
/*
* First job: lock down the current transaction and wait for
@@ -340,7 +344,18 @@ void jbd2_journal_commit_transaction(journal_t *journal)
/* Do we need to erase the effects of a prior jbd2_journal_flush? */
if (journal->j_flags & JBD2_FLUSHED) {
jbd_debug(3, "super block updated\n");
- jbd2_journal_update_superblock(journal, 1);
+ mutex_lock(&journal->j_checkpoint_mutex);
+ /*
+ * We hold j_checkpoint_mutex so tail cannot change under us.
+ * We don't need any special data guarantees for writing sb
+ * since journal is empty and it is ok for write to be
+ * flushed only with transaction commit.
+ */
+ jbd2_journal_update_sb_log_tail(journal,
+ journal->j_tail_sequence,
+ journal->j_tail,
+ WRITE_SYNC);
+ mutex_unlock(&journal->j_checkpoint_mutex);
} else {
jbd_debug(3, "superblock not updated\n");
}
@@ -677,10 +692,30 @@ void jbd2_journal_commit_transaction(journal_t *journal)
err = 0;
}
+ /*
+ * Get current oldest transaction in the log before we issue flush
+ * to the filesystem device. After the flush we can be sure that
+ * blocks of all older transactions are checkpointed to persistent
+ * storage and we will be safe to update journal start in the
+ * superblock with the numbers we get here.
+ */
+ update_tail =
+ jbd2_journal_get_log_tail(journal, &first_tid, &first_block);
+
write_lock(&journal->j_state_lock);
+ if (update_tail) {
+ long freed = first_block - journal->j_tail;
+
+ if (first_block < journal->j_tail)
+ freed += journal->j_last - journal->j_first;
+ /* Update tail only if we free significant amount of space */
+ if (freed < journal->j_maxlen / 4)
+ update_tail = 0;
+ }
J_ASSERT(commit_transaction->t_state == T_COMMIT);
commit_transaction->t_state = T_COMMIT_DFLUSH;
write_unlock(&journal->j_state_lock);
+
/*
* If the journal is not located on the file system device,
* then we must flush the file system device before we issue
@@ -831,6 +866,14 @@ void jbd2_journal_commit_transaction(journal_t *journal)
if (err)
jbd2_journal_abort(journal, err);
+ /*
+ * Now disk caches for filesystem device are flushed so we are safe to
+ * erase checkpointed transactions from the log by updating journal
+ * superblock.
+ */
+ if (update_tail)
+ jbd2_update_log_tail(journal, first_tid, first_block);
+
/* End of a transaction! Finally, we can do checkpoint
processing: any buffers committed as a result of this
transaction can be removed from any checkpoint list it was on
@@ -1048,7 +1091,7 @@ void jbd2_journal_commit_transaction(journal_t *journal)
jbd_debug(1, "JBD2: commit %d complete, head %d\n",
journal->j_commit_sequence, journal->j_tail_sequence);
if (to_free)
- kfree(commit_transaction);
+ jbd2_journal_free_transaction(commit_transaction);
wake_up(&journal->j_wait_done_commit);
}
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 839377e3d6244ac540e0a573bf9c4adc679225a8..98ed6dbfe381370710f89109dd0b5a2209a44494 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -71,7 +71,6 @@ EXPORT_SYMBOL(jbd2_journal_revoke);
EXPORT_SYMBOL(jbd2_journal_init_dev);
EXPORT_SYMBOL(jbd2_journal_init_inode);
-EXPORT_SYMBOL(jbd2_journal_update_format);
EXPORT_SYMBOL(jbd2_journal_check_used_features);
EXPORT_SYMBOL(jbd2_journal_check_available_features);
EXPORT_SYMBOL(jbd2_journal_set_features);
@@ -96,7 +95,6 @@ EXPORT_SYMBOL(jbd2_journal_release_jbd_inode);
EXPORT_SYMBOL(jbd2_journal_begin_ordered_truncate);
EXPORT_SYMBOL(jbd2_inode_cache);
-static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
static int jbd2_journal_create_slab(size_t slab_size);
@@ -746,6 +744,98 @@ struct journal_head *jbd2_journal_get_descriptor_buffer(journal_t *journal)
return jbd2_journal_add_journal_head(bh);
}
+/*
+ * Return tid of the oldest transaction in the journal and block in the journal
+ * where the transaction starts.
+ *
+ * If the journal is now empty, return which will be the next transaction ID
+ * we will write and where will that transaction start.
+ *
+ * The return value is 0 if journal tail cannot be pushed any further, 1 if
+ * it can.
+ */
+int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
+ unsigned long *block)
+{
+ transaction_t *transaction;
+ int ret;
+
+ read_lock(&journal->j_state_lock);
+ spin_lock(&journal->j_list_lock);
+ transaction = journal->j_checkpoint_transactions;
+ if (transaction) {
+ *tid = transaction->t_tid;
+ *block = transaction->t_log_start;
+ } else if ((transaction = journal->j_committing_transaction) != NULL) {
+ *tid = transaction->t_tid;
+ *block = transaction->t_log_start;
+ } else if ((transaction = journal->j_running_transaction) != NULL) {
+ *tid = transaction->t_tid;
+ *block = journal->j_head;
+ } else {
+ *tid = journal->j_transaction_sequence;
+ *block = journal->j_head;
+ }
+ ret = tid_gt(*tid, journal->j_tail_sequence);
+ spin_unlock(&journal->j_list_lock);
+ read_unlock(&journal->j_state_lock);
+
+ return ret;
+}
+
+/*
+ * Update information in journal structure and in on disk journal superblock
+ * about log tail. This function does not check whether information passed in
+ * really pushes log tail further. It's responsibility of the caller to make
+ * sure provided log tail information is valid (e.g. by holding
+ * j_checkpoint_mutex all the time between computing log tail and calling this
+ * function as is the case with jbd2_cleanup_journal_tail()).
+ *
+ * Requires j_checkpoint_mutex
+ */
+void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+{
+ unsigned long freed;
+
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
+
+ /*
+ * We cannot afford for write to remain in drive's caches since as
+ * soon as we update j_tail, next transaction can start reusing journal
+ * space and if we lose sb update during power failure we'd replay
+ * old transaction with possibly newly overwritten data.
+ */
+ jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA);
+ write_lock(&journal->j_state_lock);
+ freed = block - journal->j_tail;
+ if (block < journal->j_tail)
+ freed += journal->j_last - journal->j_first;
+
+ trace_jbd2_update_log_tail(journal, tid, block, freed);
+ jbd_debug(1,
+ "Cleaning journal tail from %d to %d (offset %lu), "
+ "freeing %lu\n",
+ journal->j_tail_sequence, tid, block, freed);
+
+ journal->j_free += freed;
+ journal->j_tail_sequence = tid;
+ journal->j_tail = block;
+ write_unlock(&journal->j_state_lock);
+}
+
+/*
+ * This is a variaon of __jbd2_update_log_tail which checks for validity of
+ * provided log tail and locks j_checkpoint_mutex. So it is safe against races
+ * with other threads updating log tail.
+ */
+void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block)
+{
+ mutex_lock(&journal->j_checkpoint_mutex);
+ if (tid_gt(tid, journal->j_tail_sequence))
+ __jbd2_update_log_tail(journal, tid, block);
+ mutex_unlock(&journal->j_checkpoint_mutex);
+}
+
struct jbd2_stats_proc_session {
journal_t *journal;
struct transaction_stats_s *stats;
@@ -1114,40 +1204,45 @@ static int journal_reset(journal_t *journal)
journal->j_max_transaction_buffers = journal->j_maxlen / 4;
- /* Add the dynamic fields and write it to disk. */
- jbd2_journal_update_superblock(journal, 1);
- return jbd2_journal_start_thread(journal);
-}
-
-/**
- * void jbd2_journal_update_superblock() - Update journal sb on disk.
- * @journal: The journal to update.
- * @wait: Set to '0' if you don't want to wait for IO completion.
- *
- * Update a journal's dynamic superblock fields and write it to disk,
- * optionally waiting for the IO to complete.
- */
-void jbd2_journal_update_superblock(journal_t *journal, int wait)
-{
- journal_superblock_t *sb = journal->j_superblock;
- struct buffer_head *bh = journal->j_sb_buffer;
-
/*
* As a special case, if the on-disk copy is already marked as needing
- * no recovery (s_start == 0) and there are no outstanding transactions
- * in the filesystem, then we can safely defer the superblock update
- * until the next commit by setting JBD2_FLUSHED. This avoids
+ * no recovery (s_start == 0), then we can safely defer the superblock
+ * update until the next commit by setting JBD2_FLUSHED. This avoids
* attempting a write to a potential-readonly device.
*/
- if (sb->s_start == 0 && journal->j_tail_sequence ==
- journal->j_transaction_sequence) {
+ if (sb->s_start == 0) {
jbd_debug(1, "JBD2: Skipping superblock update on recovered sb "
"(start %ld, seq %d, errno %d)\n",
journal->j_tail, journal->j_tail_sequence,
journal->j_errno);
- goto out;
+ journal->j_flags |= JBD2_FLUSHED;
+ } else {
+ /* Lock here to make assertions happy... */
+ mutex_lock(&journal->j_checkpoint_mutex);
+ /*
+ * Update log tail information. We use WRITE_FUA since new
+ * transaction will start reusing journal space and so we
+ * must make sure information about current log tail is on
+ * disk before that.
+ */
+ jbd2_journal_update_sb_log_tail(journal,
+ journal->j_tail_sequence,
+ journal->j_tail,
+ WRITE_FUA);
+ mutex_unlock(&journal->j_checkpoint_mutex);
}
+ return jbd2_journal_start_thread(journal);
+}
+static void jbd2_write_superblock(journal_t *journal, int write_op)
+{
+ struct buffer_head *bh = journal->j_sb_buffer;
+ int ret;
+
+ trace_jbd2_write_superblock(journal, write_op);
+ if (!(journal->j_flags & JBD2_BARRIER))
+ write_op &= ~(REQ_FUA | REQ_FLUSH);
+ lock_buffer(bh);
if (buffer_write_io_error(bh)) {
/*
* Oh, dear. A previous attempt to write the journal
@@ -1163,48 +1258,106 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait)
clear_buffer_write_io_error(bh);
set_buffer_uptodate(bh);
}
+ get_bh(bh);
+ bh->b_end_io = end_buffer_write_sync;
+ ret = submit_bh(write_op, bh);
+ wait_on_buffer(bh);
+ if (buffer_write_io_error(bh)) {
+ clear_buffer_write_io_error(bh);
+ set_buffer_uptodate(bh);
+ ret = -EIO;
+ }
+ if (ret) {
+ printk(KERN_ERR "JBD2: Error %d detected when updating "
+ "journal superblock for %s.\n", ret,
+ journal->j_devname);
+ }
+}
+
+/**
+ * jbd2_journal_update_sb_log_tail() - Update log tail in journal sb on disk.
+ * @journal: The journal to update.
+ * @tail_tid: TID of the new transaction at the tail of the log
+ * @tail_block: The first block of the transaction at the tail of the log
+ * @write_op: With which operation should we write the journal sb
+ *
+ * Update a journal's superblock information about log tail and write it to
+ * disk, waiting for the IO to complete.
+ */
+void jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
+ unsigned long tail_block, int write_op)
+{
+ journal_superblock_t *sb = journal->j_superblock;
+
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
+ jbd_debug(1, "JBD2: updating superblock (start %lu, seq %u)\n",
+ tail_block, tail_tid);
+
+ sb->s_sequence = cpu_to_be32(tail_tid);
+ sb->s_start = cpu_to_be32(tail_block);
+
+ jbd2_write_superblock(journal, write_op);
+
+ /* Log is no longer empty */
+ write_lock(&journal->j_state_lock);
+ WARN_ON(!sb->s_sequence);
+ journal->j_flags &= ~JBD2_FLUSHED;
+ write_unlock(&journal->j_state_lock);
+}
+
+/**
+ * jbd2_mark_journal_empty() - Mark on disk journal as empty.
+ * @journal: The journal to update.
+ *
+ * Update a journal's dynamic superblock fields to show that journal is empty.
+ * Write updated superblock to disk waiting for IO to complete.
+ */
+static void jbd2_mark_journal_empty(journal_t *journal)
+{
+ journal_superblock_t *sb = journal->j_superblock;
+ BUG_ON(!mutex_is_locked(&journal->j_checkpoint_mutex));
read_lock(&journal->j_state_lock);
- jbd_debug(1, "JBD2: updating superblock (start %ld, seq %d, errno %d)\n",
- journal->j_tail, journal->j_tail_sequence, journal->j_errno);
+ jbd_debug(1, "JBD2: Marking journal as empty (seq %d)\n",
+ journal->j_tail_sequence);
sb->s_sequence = cpu_to_be32(journal->j_tail_sequence);
- sb->s_start = cpu_to_be32(journal->j_tail);
- sb->s_errno = cpu_to_be32(journal->j_errno);
+ sb->s_start = cpu_to_be32(0);
read_unlock(&journal->j_state_lock);
- BUFFER_TRACE(bh, "marking dirty");
- mark_buffer_dirty(bh);
- if (wait) {
- sync_dirty_buffer(bh);
- if (buffer_write_io_error(bh)) {
- printk(KERN_ERR "JBD2: I/O error detected "
- "when updating journal superblock for %s.\n",
- journal->j_devname);
- clear_buffer_write_io_error(bh);
- set_buffer_uptodate(bh);
- }
- } else
- write_dirty_buffer(bh, WRITE);
-
-out:
- /* If we have just flushed the log (by marking s_start==0), then
- * any future commit will have to be careful to update the
- * superblock again to re-record the true start of the log. */
+ jbd2_write_superblock(journal, WRITE_FUA);
+ /* Log is no longer empty */
write_lock(&journal->j_state_lock);
- if (sb->s_start)
- journal->j_flags &= ~JBD2_FLUSHED;
- else
- journal->j_flags |= JBD2_FLUSHED;
+ journal->j_flags |= JBD2_FLUSHED;
write_unlock(&journal->j_state_lock);
}
+
+/**
+ * jbd2_journal_update_sb_errno() - Update error in the journal.
+ * @journal: The journal to update.
+ *
+ * Update a journal's errno. Write updated superblock to disk waiting for IO
+ * to complete.
+ */
+static void jbd2_journal_update_sb_errno(journal_t *journal)
+{
+ journal_superblock_t *sb = journal->j_superblock;
+
+ read_lock(&journal->j_state_lock);
+ jbd_debug(1, "JBD2: updating superblock error (errno %d)\n",
+ journal->j_errno);
+ sb->s_errno = cpu_to_be32(journal->j_errno);
+ read_unlock(&journal->j_state_lock);
+
+ jbd2_write_superblock(journal, WRITE_SYNC);
+}
+
/*
* Read the superblock for a given journal, performing initial
* validation of the format.
*/
-
static int journal_get_superblock(journal_t *journal)
{
struct buffer_head *bh;
@@ -1398,14 +1551,11 @@ int jbd2_journal_destroy(journal_t *journal)
if (journal->j_sb_buffer) {
if (!is_journal_aborted(journal)) {
- /* We can now mark the journal as empty. */
- journal->j_tail = 0;
- journal->j_tail_sequence =
- ++journal->j_transaction_sequence;
- jbd2_journal_update_superblock(journal, 1);
- } else {
+ mutex_lock(&journal->j_checkpoint_mutex);
+ jbd2_mark_journal_empty(journal);
+ mutex_unlock(&journal->j_checkpoint_mutex);
+ } else
err = -EIO;
- }
brelse(journal->j_sb_buffer);
}
@@ -1551,61 +1701,6 @@ void jbd2_journal_clear_features(journal_t *journal, unsigned long compat,
}
EXPORT_SYMBOL(jbd2_journal_clear_features);
-/**
- * int jbd2_journal_update_format () - Update on-disk journal structure.
- * @journal: Journal to act on.
- *
- * Given an initialised but unloaded journal struct, poke about in the
- * on-disk structure to update it to the most recent supported version.
- */
-int jbd2_journal_update_format (journal_t *journal)
-{
- journal_superblock_t *sb;
- int err;
-
- err = journal_get_superblock(journal);
- if (err)
- return err;
-
- sb = journal->j_superblock;
-
- switch (be32_to_cpu(sb->s_header.h_blocktype)) {
- case JBD2_SUPERBLOCK_V2:
- return 0;
- case JBD2_SUPERBLOCK_V1:
- return journal_convert_superblock_v1(journal, sb);
- default:
- break;
- }
- return -EINVAL;
-}
-
-static int journal_convert_superblock_v1(journal_t *journal,
- journal_superblock_t *sb)
-{
- int offset, blocksize;
- struct buffer_head *bh;
-
- printk(KERN_WARNING
- "JBD2: Converting superblock from version 1 to 2.\n");
-
- /* Pre-initialise new fields to zero */
- offset = ((char *) &(sb->s_feature_compat)) - ((char *) sb);
- blocksize = be32_to_cpu(sb->s_blocksize);
- memset(&sb->s_feature_compat, 0, blocksize-offset);
-
- sb->s_nr_users = cpu_to_be32(1);
- sb->s_header.h_blocktype = cpu_to_be32(JBD2_SUPERBLOCK_V2);
- journal->j_format_version = 2;
-
- bh = journal->j_sb_buffer;
- BUFFER_TRACE(bh, "marking dirty");
- mark_buffer_dirty(bh);
- sync_dirty_buffer(bh);
- return 0;
-}
-
-
/**
* int jbd2_journal_flush () - Flush journal
* @journal: Journal to act on.
@@ -1619,7 +1714,6 @@ int jbd2_journal_flush(journal_t *journal)
{
int err = 0;
transaction_t *transaction = NULL;
- unsigned long old_tail;
write_lock(&journal->j_state_lock);
@@ -1654,6 +1748,7 @@ int jbd2_journal_flush(journal_t *journal)
if (is_journal_aborted(journal))
return -EIO;
+ mutex_lock(&journal->j_checkpoint_mutex);
jbd2_cleanup_journal_tail(journal);
/* Finally, mark the journal as really needing no recovery.
@@ -1661,14 +1756,9 @@ int jbd2_journal_flush(journal_t *journal)
* the magic code for a fully-recovered superblock. Any future
* commits of data to the journal will restore the current
* s_start value. */
+ jbd2_mark_journal_empty(journal);
+ mutex_unlock(&journal->j_checkpoint_mutex);
write_lock(&journal->j_state_lock);
- old_tail = journal->j_tail;
- journal->j_tail = 0;
- write_unlock(&journal->j_state_lock);
- jbd2_journal_update_superblock(journal, 1);
- write_lock(&journal->j_state_lock);
- journal->j_tail = old_tail;
-
J_ASSERT(!journal->j_running_transaction);
J_ASSERT(!journal->j_committing_transaction);
J_ASSERT(!journal->j_checkpoint_transactions);
@@ -1708,8 +1798,12 @@ int jbd2_journal_wipe(journal_t *journal, int write)
write ? "Clearing" : "Ignoring");
err = jbd2_journal_skip_recovery(journal);
- if (write)
- jbd2_journal_update_superblock(journal, 1);
+ if (write) {
+ /* Lock to make assertions happy... */
+ mutex_lock(&journal->j_checkpoint_mutex);
+ jbd2_mark_journal_empty(journal);
+ mutex_unlock(&journal->j_checkpoint_mutex);
+ }
no_recovery:
return err;
@@ -1759,7 +1853,7 @@ static void __journal_abort_soft (journal_t *journal, int errno)
__jbd2_journal_abort_hard(journal);
if (errno)
- jbd2_journal_update_superblock(journal, 1);
+ jbd2_journal_update_sb_errno(journal);
}
/**
@@ -2017,7 +2111,7 @@ static struct kmem_cache *jbd2_journal_head_cache;
static atomic_t nr_journal_heads = ATOMIC_INIT(0);
#endif
-static int journal_init_jbd2_journal_head_cache(void)
+static int jbd2_journal_init_journal_head_cache(void)
{
int retval;
@@ -2035,7 +2129,7 @@ static int journal_init_jbd2_journal_head_cache(void)
return retval;
}
-static void jbd2_journal_destroy_jbd2_journal_head_cache(void)
+static void jbd2_journal_destroy_journal_head_cache(void)
{
if (jbd2_journal_head_cache) {
kmem_cache_destroy(jbd2_journal_head_cache);
@@ -2323,7 +2417,7 @@ static void __exit jbd2_remove_jbd_stats_proc_entry(void)
struct kmem_cache *jbd2_handle_cache, *jbd2_inode_cache;
-static int __init journal_init_handle_cache(void)
+static int __init jbd2_journal_init_handle_cache(void)
{
jbd2_handle_cache = KMEM_CACHE(jbd2_journal_handle, SLAB_TEMPORARY);
if (jbd2_handle_cache == NULL) {
@@ -2358,17 +2452,20 @@ static int __init journal_init_caches(void)
ret = jbd2_journal_init_revoke_caches();
if (ret == 0)
- ret = journal_init_jbd2_journal_head_cache();
+ ret = jbd2_journal_init_journal_head_cache();
+ if (ret == 0)
+ ret = jbd2_journal_init_handle_cache();
if (ret == 0)
- ret = journal_init_handle_cache();
+ ret = jbd2_journal_init_transaction_cache();
return ret;
}
static void jbd2_journal_destroy_caches(void)
{
jbd2_journal_destroy_revoke_caches();
- jbd2_journal_destroy_jbd2_journal_head_cache();
+ jbd2_journal_destroy_journal_head_cache();
jbd2_journal_destroy_handle_cache();
+ jbd2_journal_destroy_transaction_cache();
jbd2_journal_destroy_slabs();
}
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index da6d7baf1390c401cc52b1cb005cde1ff7776483..c1a03354a22ff1b5a787251b422afcb5225ca2c9 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -21,6 +21,7 @@
#include <linux/jbd2.h>
#include <linux/errno.h>
#include <linux/crc32.h>
+#include <linux/blkdev.h>
#endif
/*
@@ -265,7 +266,9 @@ int jbd2_journal_recover(journal_t *journal)
err2 = sync_blockdev(journal->j_fs_dev);
if (!err)
err = err2;
-
+ /* Make sure all replayed data is on permanent storage */
+ if (journal->j_flags & JBD2_BARRIER)
+ blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
return err;
}
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index 30b2867d6cc950cb7eeceeb528f18d073405117b..6973705d6a3d9db1c96ed67f55c97c8a13ee2f6d 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -208,17 +208,13 @@ int __init jbd2_journal_init_revoke_caches(void)
J_ASSERT(!jbd2_revoke_record_cache);
J_ASSERT(!jbd2_revoke_table_cache);
- jbd2_revoke_record_cache = kmem_cache_create("jbd2_revoke_record",
- sizeof(struct jbd2_revoke_record_s),
- 0,
- SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY,
- NULL);
+ jbd2_revoke_record_cache = KMEM_CACHE(jbd2_revoke_record_s,
+ SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY);
if (!jbd2_revoke_record_cache)
goto record_cache_failure;
- jbd2_revoke_table_cache = kmem_cache_create("jbd2_revoke_table",
- sizeof(struct jbd2_revoke_table_s),
- 0, SLAB_TEMPORARY, NULL);
+ jbd2_revoke_table_cache = KMEM_CACHE(jbd2_revoke_table_s,
+ SLAB_TEMPORARY);
if (!jbd2_revoke_table_cache)
goto table_cache_failure;
return 0;
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index e5aba56e1fd51cd01e001d090f572b3b5f1b41ed..ddcd3549c6c26cbc9cb9dd46831b189ed3c0441e 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -33,6 +33,35 @@
static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh);
static void __jbd2_journal_unfile_buffer(struct journal_head *jh);
+static struct kmem_cache *transaction_cache;
+int __init jbd2_journal_init_transaction_cache(void)
+{
+ J_ASSERT(!transaction_cache);
+ transaction_cache = kmem_cache_create("jbd2_transaction_s",
+ sizeof(transaction_t),
+ 0,
+ SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY,
+ NULL);
+ if (transaction_cache)
+ return 0;
+ return -ENOMEM;
+}
+
+void jbd2_journal_destroy_transaction_cache(void)
+{
+ if (transaction_cache) {
+ kmem_cache_destroy(transaction_cache);
+ transaction_cache = NULL;
+ }
+}
+
+void jbd2_journal_free_transaction(transaction_t *transaction)
+{
+ if (unlikely(ZERO_OR_NULL_PTR(transaction)))
+ return;
+ kmem_cache_free(transaction_cache, transaction);
+}
+
/*
* jbd2_get_transaction: obtain a new transaction_t object.
*
@@ -133,7 +162,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle,
alloc_transaction:
if (!journal->j_running_transaction) {
- new_transaction = kzalloc(sizeof(*new_transaction), gfp_mask);
+ new_transaction = kmem_cache_alloc(transaction_cache,
+ gfp_mask | __GFP_ZERO);
if (!new_transaction) {
/*
* If __GFP_FS is not present, then we may be
@@ -162,7 +192,7 @@ static int start_this_handle(journal_t *journal, handle_t *handle,
if (is_journal_aborted(journal) ||
(journal->j_errno != 0 && !(journal->j_flags & JBD2_ACK_ERR))) {
read_unlock(&journal->j_state_lock);
- kfree(new_transaction);
+ jbd2_journal_free_transaction(new_transaction);
return -EROFS;
}
@@ -284,7 +314,7 @@ static int start_this_handle(journal_t *journal, handle_t *handle,
read_unlock(&journal->j_state_lock);
lock_map_acquire(&handle->h_lockdep_map);
- kfree(new_transaction);
+ jbd2_journal_free_transaction(new_transaction);
return 0;
}
@@ -1549,9 +1579,9 @@ __blist_del_buffer(struct journal_head **list, struct journal_head *jh)
* of these pointers, it could go bad. Generally the caller needs to re-read
* the pointer from the transaction_t.
*
- * Called under j_list_lock. The journal may not be locked.
+ * Called under j_list_lock.
*/
-void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
+static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
{
struct journal_head **list = NULL;
transaction_t *transaction;
@@ -1646,10 +1676,8 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh)
spin_lock(&journal->j_list_lock);
if (jh->b_cp_transaction != NULL && jh->b_transaction == NULL) {
/* written-back checkpointed metadata buffer */
- if (jh->b_jlist == BJ_None) {
- JBUFFER_TRACE(jh, "remove from checkpoint list");
- __jbd2_journal_remove_checkpoint(jh);
- }
+ JBUFFER_TRACE(jh, "remove from checkpoint list");
+ __jbd2_journal_remove_checkpoint(jh);
}
spin_unlock(&journal->j_list_lock);
out:
@@ -1949,6 +1977,8 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
clear_buffer_mapped(bh);
clear_buffer_req(bh);
clear_buffer_new(bh);
+ clear_buffer_delay(bh);
+ clear_buffer_unwritten(bh);
bh->b_bdev = NULL;
return may_free;
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index fa63f1b46103eceba8a380851c30500f30978c65..c437f914d537746d5c856d506ef5ee6b4e520f0b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1872,19 +1872,6 @@ extern struct dentry *mount_pseudo(struct file_system_type *, char *,
const struct dentry_operations *dops,
unsigned long);
-static inline void sb_mark_dirty(struct super_block *sb)
-{
- sb->s_dirt = 1;
-}
-static inline void sb_mark_clean(struct super_block *sb)
-{
- sb->s_dirt = 0;
-}
-static inline int sb_is_dirty(struct super_block *sb)
-{
- return sb->s_dirt;
-}
-
/* Alas, no aliases. Too much hassle with bringing module.h everywhere */
#define fops_get(fops) \
(((fops) && try_module_get((fops)->owner) ? (fops) : NULL))
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 5557baefed60b5f5bb3dd0984bbbe7f2e0a4c8fc..912c30a8ddb1e47cd732fbd95f281238ca601ae0 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -971,6 +971,10 @@ extern void __journal_clean_data_list(transaction_t *transaction);
/* Log buffer allocation */
extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
+int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
+ unsigned long *block);
+void __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
+void jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block);
/* Commit management */
extern void jbd2_journal_commit_transaction(journal_t *);
@@ -1020,6 +1024,11 @@ jbd2_journal_write_metadata_buffer(transaction_t *transaction,
/* Transaction locking */
extern void __wait_on_journal (journal_t *);
+/* Transaction cache support */
+extern void jbd2_journal_destroy_transaction_cache(void);
+extern int jbd2_journal_init_transaction_cache(void);
+extern void jbd2_journal_free_transaction(transaction_t *);
+
/*
* Journal locking.
*
@@ -1082,7 +1091,8 @@ extern int jbd2_journal_destroy (journal_t *);
extern int jbd2_journal_recover (journal_t *journal);
extern int jbd2_journal_wipe (journal_t *, int);
extern int jbd2_journal_skip_recovery (journal_t *);
-extern void jbd2_journal_update_superblock (journal_t *, int);
+extern void jbd2_journal_update_sb_log_tail (journal_t *, tid_t,
+ unsigned long, int);
extern void __jbd2_journal_abort_hard (journal_t *);
extern void jbd2_journal_abort (journal_t *, int);
extern int jbd2_journal_errno (journal_t *);
diff --git a/include/linux/journal-head.h b/include/linux/journal-head.h
index 423cb6d78ee0bc9958d63a592f53c7d5a17fa874..c18b46f8aeebbfb4a85f8b750dad108c0124eaf6 100644
--- a/include/linux/journal-head.h
+++ b/include/linux/journal-head.h
@@ -66,6 +66,8 @@ struct journal_head {
* transaction (if there is one). Only applies to buffers on a
* transaction's data or metadata journaling list.
* [j_list_lock] [jbd_lock_bh_state()]
+ * Either of these locks is enough for reading, both are needed for
+ * changes.
*/
transaction_t *b_transaction;
diff --git a/include/trace/events/jbd2.h b/include/trace/events/jbd2.h
index 75964412ddbb56574d11f8d3e608577bcc21687f..127993dbf322efa40bc68222551ff181132122b4 100644
--- a/include/trace/events/jbd2.h
+++ b/include/trace/events/jbd2.h
@@ -81,6 +81,13 @@ DEFINE_EVENT(jbd2_commit, jbd2_commit_logging,
TP_ARGS(journal, commit_transaction)
);
+DEFINE_EVENT(jbd2_commit, jbd2_drop_transaction,
+
+ TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
+
+ TP_ARGS(journal, commit_transaction)
+);
+
TRACE_EVENT(jbd2_end_commit,
TP_PROTO(journal_t *journal, transaction_t *commit_transaction),
@@ -200,7 +207,7 @@ TRACE_EVENT(jbd2_checkpoint_stats,
__entry->forced_to_close, __entry->written, __entry->dropped)
);
-TRACE_EVENT(jbd2_cleanup_journal_tail,
+TRACE_EVENT(jbd2_update_log_tail,
TP_PROTO(journal_t *journal, tid_t first_tid,
unsigned long block_nr, unsigned long freed),
@@ -229,6 +236,26 @@ TRACE_EVENT(jbd2_cleanup_journal_tail,
__entry->block_nr, __entry->freed)
);
+TRACE_EVENT(jbd2_write_superblock,
+
+ TP_PROTO(journal_t *journal, int write_op),
+
+ TP_ARGS(journal, write_op),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( int, write_op )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = journal->j_fs_dev->bd_dev;
+ __entry->write_op = write_op;
+ ),
+
+ TP_printk("dev %d,%d write_op %x", MAJOR(__entry->dev),
+ MINOR(__entry->dev), __entry->write_op)
+);
+
#endif /* _TRACE_JBD2_H */
/* This part must be outside protection */
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 3fc261705b1e068c28c72a329f31ee431ae3fdc9..26adea8ca2e7dd9ebdbc9c0938498a1a8a56324d 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -95,6 +95,8 @@ unsigned long vm_dirty_bytes;
*/
unsigned int dirty_writeback_interval = 5 * 100; /* centiseconds */
+EXPORT_SYMBOL_GPL(dirty_writeback_interval);
+
/*
* The longest time for which data is allowed to remain dirty
*/