Commit 6e353e3b authored by Nikolay Borisov's avatar Nikolay Borisov Committed by David Sterba
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btrfs: document btrfs_check_shared parameters 



Signed-off-by: default avatarNikolay Borisov <nborisov@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 2639631d

fs/btrfs/backref.c

+7 −1
Original line number Diff line number Diff line
@@ -1501,7 +1501,13 @@ int btrfs_find_all_roots(struct btrfs_trans_handle *trans, 
}



/**

 * btrfs_check_shared - tell us whether an extent is shared

 * Check if an extent is shared or not

 *

 * @root:   root inode belongs to

 * @inum:   inode number of the inode whose extent we are checking

 * @bytenr: logical bytenr of the extent we are checking

 * @roots:  list of roots this extent is shared among

 * @tmp:    temporary list used for iteration

 *

 * btrfs_check_shared uses the backref walking code but will short

 * circuit as soon as it finds a root or inode that doesn't match the