From e46c772dbafc2059b0c7ee87c6a7232baadaf6c7 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Fri, 4 Oct 2013 12:29:34 +0100 Subject: GFS2: Protect quota sync generation Now that gfs2_quota_sync can be potentially called from multiple threads, we should protect this bit of code, and the sync generation number in particular in order to ensure that there are no races when syncing quotas. Signed-off-by: Steven Whitehouse Cc: Abhijith Das --- fs/gfs2/ops_fstype.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/gfs2/ops_fstype.c') diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 8e40fda985d6..82303b474958 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -93,6 +93,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) INIT_LIST_HEAD(&sdp->sd_quota_list); mutex_init(&sdp->sd_quota_mutex); + mutex_init(&sdp->sd_quota_sync_mutex); init_waitqueue_head(&sdp->sd_quota_wait); INIT_LIST_HEAD(&sdp->sd_trunc_list); spin_lock_init(&sdp->sd_trunc_lock); -- cgit v1.2.3