linux-kernel - GFS2: Pull request (fixes)

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Date:	Wed, 27 Jul 2011 11:00:04 +0100
From:	Steven Whitehouse <swhiteho@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	cluster-devel@...hat.com, linux-kernel@...r.kernel.org
Subject: GFS2: Pull request (fixes)

Hi,

Please consider pulling the following patch. Since it is only one
small patch I attached it below rather than posting it separately
as usual,

Steve.

--------------------------------------------------------------------
The following changes since commit e08dc1325feaf49eec392ee52feb2974ec3f5155:

  p9: avoid unused variable warning (2011-07-25 23:43:53 -0700)

are available in the git repository at:
  git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes.git master

Steven Whitehouse (1):
      GFS2: Fix mount hang caused by certain access pattern to sysfs files

 fs/gfs2/ops_fstype.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

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

>From 19237039919088781b4191a00bdc1284d8fea1dd Mon Sep 17 00:00:00 2001
From: Steven Whitehouse <swhiteho@...hat.com>
Date: Tue, 26 Jul 2011 09:15:45 +0100
Subject: [PATCH] GFS2: Fix mount hang caused by certain access pattern to sysfs files

Depending upon the order of userspace/kernel during the
mount process, this can result in a hang without the
_all version of the completion.

Signed-off-by: Steven Whitehouse <swhiteho@...hat.com>

diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 516516e..3bc073a 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1018,13 +1018,13 @@ hostdata_error:
 		fsname++;
 	if (lm->lm_mount == NULL) {
 		fs_info(sdp, "Now mounting FS...\n");
-		complete(&sdp->sd_locking_init);
+		complete_all(&sdp->sd_locking_init);
 		return 0;
 	}
 	ret = lm->lm_mount(sdp, fsname);
 	if (ret == 0)
 		fs_info(sdp, "Joined cluster. Now mounting FS...\n");
-	complete(&sdp->sd_locking_init);
+	complete_all(&sdp->sd_locking_init);
 	return ret;
 }
 
-- 
1.7.4




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