inode.c

#endif

static kmem_cache_t * nfs_inode_cachep;

static struct inode *nfs_alloc_inode(struct super_block *sb)
{
	struct nfs_inode *nfsi;
	nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, SLAB_KERNEL);
	if (!nfsi)
		return NULL;
	nfsi->flags = 0UL;
	nfsi->cache_validity = 0UL;
#ifdef CONFIG_NFS_V3_ACL
	nfsi->acl_access = ERR_PTR(-EAGAIN);
	nfsi->acl_default = ERR_PTR(-EAGAIN);
#endif
#ifdef CONFIG_NFS_V4
	nfsi->nfs4_acl = NULL;
#endif /* CONFIG_NFS_V4 */
	return &nfsi->vfs_inode;
}

static void nfs_destroy_inode(struct inode *inode)
{
	kmem_cache_free(nfs_inode_cachep, NFS_I(inode));
}

static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
{
	struct nfs_inode *nfsi = (struct nfs_inode *) foo;

	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
	    SLAB_CTOR_CONSTRUCTOR) {
		inode_init_once(&nfsi->vfs_inode);
		spin_lock_init(&nfsi->req_lock);
		INIT_LIST_HEAD(&nfsi->dirty);
		INIT_LIST_HEAD(&nfsi->commit);
		INIT_LIST_HEAD(&nfsi->open_files);
		INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC);
		atomic_set(&nfsi->data_updates, 0);
		nfsi->ndirty = 0;
		nfsi->ncommit = 0;
		nfsi->npages = 0;
		nfs4_init_once(nfsi);
	}
}
 
static int nfs_init_inodecache(void)
{
	nfs_inode_cachep = kmem_cache_create("nfs_inode_cache",
					     sizeof(struct nfs_inode),
					     0, SLAB_RECLAIM_ACCOUNT,
					     init_once, NULL);
	if (nfs_inode_cachep == NULL)
		return -ENOMEM;

	return 0;
}

static void nfs_destroy_inodecache(void)
{
	if (kmem_cache_destroy(nfs_inode_cachep))
		printk(KERN_INFO "nfs_inode_cache: not all structures were freed\n");
}

/*
 * Initialize NFS
 */
static int __init init_nfs_fs(void)
{
	int err;

	err = nfs_init_nfspagecache();
	if (err)
		goto out4;

	err = nfs_init_inodecache();
	if (err)
		goto out3;

	err = nfs_init_readpagecache();
	if (err)
		goto out2;

	err = nfs_init_writepagecache();
	if (err)
		goto out1;

#ifdef CONFIG_NFS_DIRECTIO
	err = nfs_init_directcache();
	if (err)
		goto out0;
#endif

#ifdef CONFIG_PROC_FS
	rpc_proc_register(&nfs_rpcstat);
#endif
        err = register_filesystem(&nfs_fs_type);
	if (err)
		goto out;
	if ((err = register_nfs4fs()) != 0)
		goto out;
	return 0;
out:
#ifdef CONFIG_PROC_FS
	rpc_proc_unregister("nfs");
#endif
	nfs_destroy_writepagecache();
#ifdef CONFIG_NFS_DIRECTIO
out0:
	nfs_destroy_directcache();
#endif
out1:
	nfs_destroy_readpagecache();
out2:
	nfs_destroy_inodecache();
out3:
	nfs_destroy_nfspagecache();
out4:
	return err;
}

static void __exit exit_nfs_fs(void)
{
#ifdef CONFIG_NFS_DIRECTIO
	nfs_destroy_directcache();
#endif
	nfs_destroy_writepagecache();
	nfs_destroy_readpagecache();
	nfs_destroy_inodecache();
	nfs_destroy_nfspagecache();
#ifdef CONFIG_PROC_FS
	rpc_proc_unregister("nfs");
#endif
	unregister_filesystem(&nfs_fs_type);
	unregister_nfs4fs();
}

/* Not quite true; I just maintain it */
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
MODULE_LICENSE("GPL");

module_init(init_nfs_fs)
module_exit(exit_nfs_fs)