From 7b9a2378b480f426d2c575633fa08c20e341bb7b Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun, 29 Sep 2013 14:59:30 -0400
Subject: [PATCH] ocfs2: needs ->d_lock to poke in ->d_parent->d_inode from
->d_revalidate()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/ocfs2/dcache.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index ef999729e274..0d3a97d2d5f6 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -70,9 +70,10 @@ static int ocfs2_dentry_revalidate(struct dentry *dentry, unsigned int flags)
*/
if (inode == NULL) {
unsigned long gen = (unsigned long) dentry->d_fsdata;
- unsigned long pgen =
- OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen;
-
+ unsigned long pgen;
+ spin_lock(&dentry->d_lock);
+ pgen = OCFS2_I(dentry->d_parent->d_inode)->ip_dir_lock_gen;
+ spin_unlock(&dentry->d_lock);
trace_ocfs2_dentry_revalidate_negative(dentry->d_name.len,
dentry->d_name.name,
pgen, gen);
--
GitLab