From: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Date: Tue, 7 Jan 2014 09:26:58 +0000 (+0800)
Subject: Btrfs: handle EAGAIN case properly in btrfs_drop_snapshot()
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=5c61a3d3ff81ddb53006bbc84aca8363b4f2841b;p=linux-edison.git

Btrfs: handle EAGAIN case properly in btrfs_drop_snapshot()

commit 90515e7f5d7d24cbb2a4038a3f1b5cfa2921aa17 upstream.

We may return early in btrfs_drop_snapshot(), we shouldn't
call btrfs_std_err() for this case, fix it.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 3b6d20bc238..bbafa05519d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7491,7 +7491,7 @@ out:
 	 */
 	if (root_dropped == false)
 		btrfs_add_dead_root(root);
-	if (err)
+	if (err && err != -EAGAIN)
 		btrfs_std_error(root->fs_info, err);
 	return err;
 }