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btrfs: publish per-super attributes in sysfs

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This patch adds per-super attributes to sysfs.

It doesn't publish any attributes yet, but does the proper lifetime
handling as well as the basic infrastructure to add new attributes.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Jeff Mahoney
2013-11-01 13:06:58 -04:00
committed by Chris Mason
parent 079b72bca3
commit 5ac1d209f1
4 changed files with 57 additions and 0 deletions
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2
fs/btrfs/ctree.h
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@@ -3780,6 +3780,8 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
/* sysfs.c */
int btrfs_init_sysfs(void);
void btrfs_exit_sysfs(void);
int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info);
void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info);
/* xattr.c */
ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);