From: Steven Whitehouse <swhiteho@redhat.com>
Date: Tue, 26 Jul 2011 08:15:45 +0000 (+0100)
Subject: GFS2: Fix mount hang caused by certain access pattern to sysfs files
X-Git-Tag: v3.12-rc1~5160^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=19237039919088781b4191a00bdc1284d8fea1dd;p=kernel%2Fkernel-generic.git

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@redhat.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;
 }