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authorJan Kara <jack@suse.cz>2016-02-22 19:56:38 +0300
committerTheodore Ts'o <tytso@mit.edu>2016-02-22 19:56:38 +0300
commitbe0726d33cb8f411945884664924bed3cb8c70ee (patch)
tree9460f6b33739e505f29cfa94a13530e8d087a624 /fs/ext2/xattr.h
parent82939d7999dfc1f1998c4b1c12e2f19edbdff272 (diff)
downloadlinux-be0726d33cb8f411945884664924bed3cb8c70ee.tar.xz
ext2: convert to mbcache2
The conversion is generally straightforward. We convert filesystem from a global cache to per-fs one. Similarly to ext4 the tricky part is that xattr block corresponding to found mbcache entry can get freed before we get buffer lock for that block. So we have to check whether the entry is still valid after getting the buffer lock. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext2/xattr.h')
-rw-r--r--fs/ext2/xattr.h21
1 files changed, 5 insertions, 16 deletions
diff --git a/fs/ext2/xattr.h b/fs/ext2/xattr.h
index 60edf298644e..6ea38aa9563a 100644
--- a/fs/ext2/xattr.h
+++ b/fs/ext2/xattr.h
@@ -53,6 +53,8 @@ struct ext2_xattr_entry {
#define EXT2_XATTR_SIZE(size) \
(((size) + EXT2_XATTR_ROUND) & ~EXT2_XATTR_ROUND)
+struct mb2_cache;
+
# ifdef CONFIG_EXT2_FS_XATTR
extern const struct xattr_handler ext2_xattr_user_handler;
@@ -65,10 +67,9 @@ extern int ext2_xattr_get(struct inode *, int, const char *, void *, size_t);
extern int ext2_xattr_set(struct inode *, int, const char *, const void *, size_t, int);
extern void ext2_xattr_delete_inode(struct inode *);
-extern void ext2_xattr_put_super(struct super_block *);
-extern int init_ext2_xattr(void);
-extern void exit_ext2_xattr(void);
+extern struct mb2_cache *ext2_xattr_create_cache(void);
+extern void ext2_xattr_destroy_cache(struct mb2_cache *cache);
extern const struct xattr_handler *ext2_xattr_handlers[];
@@ -93,19 +94,7 @@ ext2_xattr_delete_inode(struct inode *inode)
{
}
-static inline void
-ext2_xattr_put_super(struct super_block *sb)
-{
-}
-
-static inline int
-init_ext2_xattr(void)
-{
- return 0;
-}
-
-static inline void
-exit_ext2_xattr(void)
+static inline void ext2_xattr_destroy_cache(struct mb2_cache *cache)
{
}