btrfs: Make btrfs_find_name_in_backref return btrfs_inode_ref struct

btrfs_find_name_in_backref returns either 0/1 depending on whether it
found a backref for the given name. If it returns true then the actual
inode_ref struct is returned in one of its parameters. That's pointless,
instead refactor the function such that it returns either a pointer
to the btrfs_inode_ref or NULL it it didn't find anything. This
streamlines the function calling convention.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 34d087008b72..7a7ae33bea51 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1271,8 +1271,8 @@ again:
                                                              parent_id, name,
                                                              namelen, NULL);
                 else
-                        ret = btrfs_find_name_in_backref(log_eb, log_slot, name,
-                                                         namelen, NULL);
+                        ret = !!btrfs_find_name_in_backref(log_eb, log_slot,
+                                                           name, namelen);
 
                 if (!ret) {
                         struct inode *dir;
@@ -1338,8 +1338,8 @@ static int btrfs_inode_ref_exists(struct inode *inode, struct inode *dir,
                                                      path->slots[0], parent_id,
                                                      name, namelen, NULL);
         else
-                ret = btrfs_find_name_in_backref(path->nodes[0], path->slots[0],
-                                                 name, namelen, NULL);
+                ret = !!btrfs_find_name_in_backref(path->nodes[0], path->slots[0],
+                                                   name, namelen);
 
 out:
         btrfs_free_path(path);