[3.13.y.z extended stable] Patch "ocfs2: do not put bh when buffer_uptodate failed" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    ocfs2: do not put bh when buffer_uptodate failed

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.1.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From aac86e1cfefa5f7ed6519964e48a0c7f536b1b14 Mon Sep 17 00:00:00 2001
From: alex chen <alex.chen at huawei.com>
Date: Thu, 3 Apr 2014 14:47:05 -0700
Subject: ocfs2: do not put bh when buffer_uptodate failed

commit f7cf4f5bfe073ad792ab49c04f247626b3e38db6 upstream.

Do not put bh when buffer_uptodate failed in ocfs2_write_block and
ocfs2_write_super_or_backup, because it will put bh in b_end_io.
Otherwise it will hit a warning "VFS: brelse: Trying to free free
buffer".

Signed-off-by: Alex Chen <alex.chen at huawei.com>
Reviewed-by: Joseph Qi <joseph.qi at huawei.com>
Reviewed-by: Srinivas Eeda <srinivas.eeda at oracle.com>
Cc: Mark Fasheh <mfasheh at suse.com>
Acked-by: Joel Becker <jlbec at evilplan.org>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 fs/ocfs2/buffer_head_io.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index 5b704c6..1edcb14 100644
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -90,7 +90,6 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
 		 * information for this bh as it's not marked locally
 		 * uptodate. */
 		ret = -EIO;
-		put_bh(bh);
 		mlog_errno(ret);
 	}

@@ -420,7 +419,6 @@ int ocfs2_write_super_or_backup(struct ocfs2_super *osb,

 	if (!buffer_uptodate(bh)) {
 		ret = -EIO;
-		put_bh(bh);
 		mlog_errno(ret);
 	}

--
1.9.1