ocfs2: use system_wq instead of ocfs2_quota_wq

ocfs2_quota_wq is not depended upon during memory reclaim and, with
cmwq, there's no reason to use a dedicated workqueue.  Drop
ocfs2_quota_wq and use system_wq instead.  dqi_sync_work is already
sync canceled on quota disable and no further synchronization is
necessary.

This change makes ocfs2_quota_setup/shutdown() noops.  Both functions
removed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <joel.becker@oracle.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 38f986d2447e..84a70113b43a 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1645,16 +1645,11 @@ static int __init ocfs2_init(void)
                 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
         }
 
-        status = ocfs2_quota_setup();
-        if (status)
-                goto leave;
-
         ocfs2_set_locking_protocol();
 
         status = register_quota_format(&ocfs2_quota_format);
 leave:
         if (status < 0) {
-                ocfs2_quota_shutdown();
                 ocfs2_free_mem_caches();
                 exit_ocfs2_uptodate_cache();
         }
@@ -1671,8 +1666,6 @@ static void __exit ocfs2_exit(void)
 {
         mlog_entry_void();
 
-        ocfs2_quota_shutdown();
-
         if (ocfs2_wq) {
                 flush_workqueue(ocfs2_wq);
                 destroy_workqueue(ocfs2_wq);