From 6cef01e8db303656b55f39068b917616b89bfb52 Mon Sep 17 00:00:00 2001
From: WuBo <wu.bo@cn.fujitsu.com>
Date: Tue, 26 Jul 2011 03:30:11 +0000
Subject: [PATCH] --- yaml --- r: 262235 b: refs/heads/master c:
 61cfea9bb84d41b09e59822c33b3eb27acc48358 h: refs/heads/master i:   262233:
 50e4d6b7a001e31f6c696cb56b45a025e9e4c2d2   262231:
 ba84089fdc7fe6b4fef37aa8fcd8e8e038a21c80 v: v3

---
 [refs]                       |  2 +-
 trunk/fs/btrfs/extent-tree.c | 10 +++++++---
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index 71d355440ccb..4ce81f4dafd6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1bf85046e493c88be1c1bad9084428373089f618
+refs/heads/master: 61cfea9bb84d41b09e59822c33b3eb27acc48358
diff --git a/trunk/fs/btrfs/extent-tree.c b/trunk/fs/btrfs/extent-tree.c
index db2057f262ad..a4db88da125e 100644
--- a/trunk/fs/btrfs/extent-tree.c
+++ b/trunk/fs/btrfs/extent-tree.c
@@ -6549,8 +6549,6 @@ static int set_block_group_ro(struct btrfs_block_group_cache *cache, int force)
 	u64 min_allocable_bytes;
 	int ret = -ENOSPC;
 
-	if (cache->ro)
-		return 0;
 
 	/*
 	 * We need some metadata space and system metadata space for
@@ -6566,6 +6564,12 @@ static int set_block_group_ro(struct btrfs_block_group_cache *cache, int force)
 
 	spin_lock(&sinfo->lock);
 	spin_lock(&cache->lock);
+
+	if (cache->ro) {
+		ret = 0;
+		goto out;
+	}
+
 	num_bytes = cache->key.offset - cache->reserved - cache->pinned -
 		    cache->bytes_super - btrfs_block_group_used(&cache->item);
 
@@ -6579,7 +6583,7 @@ static int set_block_group_ro(struct btrfs_block_group_cache *cache, int force)
 		cache->ro = 1;
 		ret = 0;
 	}
-
+out:
 	spin_unlock(&cache->lock);
 	spin_unlock(&sinfo->lock);
 	return ret;