From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Thu, 14 Jul 2011 03:19:27 +0000 (+0000)
Subject: Btrfs: clean up for wait_extent_bit()
X-Git-Tag: v3.1-rc6~4^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ded91f0814a349e36b3ca0eff497f816ad518fba;p=platform%2Fkernel%2Flinux-stable.git

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 0d69425..a0811e6 100644
--- 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);