linux-kernel - [PATCH 3.2 056/200] Btrfs: handle EAGAIN case properly in btrfs_drop

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Date:	Mon, 31 Mar 2014 00:23:35 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Josef Bacik" <jbacik@...com>,
	"Wang Shilong" <wangsl.fnst@...fujitsu.com>,
	"Chris Mason" <clm@...com>
Subject: [PATCH 3.2 056/200] Btrfs: handle EAGAIN case properly in
 btrfs_drop_snapshot()

3.2.56-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Wang Shilong <wangsl.fnst@...fujitsu.com>

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@...fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@...com>
Signed-off-by: Chris Mason <clm@...com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/btrfs/extent-tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6725,7 +6725,7 @@ out:
 	 */
 	if (root_dropped == false)
 		btrfs_add_dead_root(root);
-	if (err)
+	if (err && err != -EAGAIN)
 		btrfs_std_error(root->fs_info, err);
 	return;
 }

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