From: Steven Whitehouse <swhiteho@redhat.com>
Date: Wed, 1 Apr 2009 10:34:15 +0100
Subject: [gfs2] fix uninterruptible quotad sleeping
Message-id: 1238578455.3355.4.camel@localhost.localdomain
O-Subject: [RHEL 5.4] GFS2: Fix uninterruptible quotad sleeping
Bugzilla: 492943
RH-Acked-by: Josef Bacik <josef@redhat.com>

Hi,

This is the fix for bz #492943 taken from upstream. It makes the sleeping
interruptible so that an idle quotad doesn't add to the load average.
Since this is a kernel thread, signals are blocked by default so there
should be no surprise wake ups.

Steve.

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index feec55c..821eb09 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -1354,7 +1354,7 @@ int gfs2_quotad(void *data)
 			refrigerator();
 		t = min(quotad_timeo, statfs_timeo);
 
-		prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_UNINTERRUPTIBLE);
+		prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_INTERRUPTIBLE);
 		spin_lock(&sdp->sd_trunc_lock);
 		empty = list_empty(&sdp->sd_trunc_list);
 		spin_unlock(&sdp->sd_trunc_lock);