btrfs: extended inode refs
This patch adds basic support for extended inode refs. This includes support
for link and unlink of the refs, which basically gets us support for rename
as well.
Inode creation does not need changing - extended refs are only added after
the ref array is full.
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index 4fda5d8..0b920c1 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -70,4 +70,9 @@
struct btrfs_path *path);
void free_ipath(struct inode_fs_paths *ipath);
+int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid,
+ u64 start_off, struct btrfs_path *path,
+ struct btrfs_inode_extref **ret_extref,
+ u64 *found_off);
+
#endif