fs/ocfs2/dlmfs: remove deprecated create_singlethread_workqueue()

The workqueue "user_dlm_worker" queues a single work item &lockres->l_work
per user_lock_res instance and hence it doesn't require execution
ordering.  Hence, alloc_workqueue has been used to replace the deprecated
create_singlethread_workqueue instance.

The WQ_MEM_RECLAIM flag has been set to ensure forward progress under
memory pressure.

Since there are fixed number of work items, explicit concurrency
limit is unnecessary here.

Link: http://lkml.kernel.org/r/9748136d3a3b18138ad1d6ba708367aa1fe9f98c.1472590094.git.bhaktipriya96@gmail.com
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
index ef474cdd640479d1e9b3b48204f12dc5c6a7704f..354cdf9714aa482e80862ba1fc760a5138fa3ac7 100644 (file)
--- a/fs/ocfs2/dlmfs/dlmfs.c
+++ b/fs/ocfs2/dlmfs/dlmfs.c
@@ -646,7 +646,7 @@ static int __init init_dlmfs_fs(void)
        }
        cleanup_inode = 1;
 
-       user_dlm_worker = create_singlethread_workqueue("user_dlm");
+       user_dlm_worker = alloc_workqueue("user_dlm", WQ_MEM_RECLAIM, 0);
        if (!user_dlm_worker) {
                status = -ENOMEM;
                goto bail;