Btrfs: clean up for wait_extent_bit()

We can just use cond_resched_lock().

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0d69425d0197b9d164e42b43f5959e33a5dd82fa..a0811e639f58ae5f9d9d3355353e010df36379d3 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -648,11 +648,7 @@ again:
                if (start > end)
                        break;
 
-               if (need_resched()) {
-                       spin_unlock(&tree->lock);
-                       cond_resched();
-                       spin_lock(&tree->lock);
-               }
+               cond_resched_lock(&tree->lock);
        }
 out:
        spin_unlock(&tree->lock);