Btrfs: make __merge_refs() return type be void

__merge_refs() always return 0, it is unnecessary
for the caller to check the return value.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

1 files changed, 3 insertions, 8 deletions

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 66f44c7534d0..7f448b8325a1 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -443,7 +443,7 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info,
  *           having a parent).
  * mode = 2: merge identical parents
  */
-static int __merge_refs(struct list_head *head, int mode)
+static void __merge_refs(struct list_head *head, int mode)
 {
         struct list_head *pos1;
 
@@ -489,7 +489,6 @@ static int __merge_refs(struct list_head *head, int mode)
                 }
 
         }
-        return 0;
 }
 
 /*
@@ -884,18 +883,14 @@ again:
         if (ret)
                 goto out;
 
-        ret = __merge_refs(&prefs, 1);
-        if (ret)
-                goto out;
+        __merge_refs(&prefs, 1);
 
         ret = __resolve_indirect_refs(fs_info, search_commit_root, time_seq,
                                       &prefs, extent_item_pos);
         if (ret)
                 goto out;
 
-        ret = __merge_refs(&prefs, 2);
-        if (ret)
-                goto out;
+        __merge_refs(&prefs, 2);
 
         while (!list_empty(&prefs)) {
                 ref = list_first_entry(&prefs, struct __prelim_ref, list);