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From: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
To: Mark Fasheh <mfasheh@suse.com>, Joel Becker <jlbec@evilplan.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Joseph Qi <joseph.qi@huawei.com>,
	xuejiufei <xuejiufei@huawei.com>,
	"Norton.Zhu" <norton.zhu@huawei.com>,
	Jun Piao <piaojun@huawei.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Michal Hocko <mhocko@suse.com>,
	Vladimir Davydov <vdavydov@virtuozzo.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: ocfs2-devel@oss.oracle.com, linux-kernel@vger.kernel.org,
	Tejun Heo <tj@kernel.org>
Subject: [PATCH v2 3/4] fs/ocfs2/super: Remove deprecated create_singlethread_workqueue
Date: Wed, 31 Aug 2016 02:20:59 +0530	[thread overview]
Message-ID: <66279de510a7f4cfc6e386d99b7e04b3f65fb11b.1472590094.git.bhaktipriya96@gmail.com> (raw)
In-Reply-To: <cover.1472590094.git.bhaktipriya96@gmail.com>

The workqueue "ocfs2_wq" queues multiple work items viz
&osb->la_enable_wq, &journal->j_recovery_work, &os->os_orphan_scan_work,
&osb->osb_truncate_log_wq which require strict execution ordering.
Hence, an ordered dedicated workqueue has been used.

WQ_MEM_RECLAIM has been set to ensure forward progress under memory
pressure because the workqueue is being used on a memory reclaim path.

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
---
 Changes in v2:
	-No change.

 fs/ocfs2/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index d7cae33..af5285d 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -2330,7 +2330,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
 	}
 	cleancache_init_shared_fs(sb);

-	osb->ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
+	osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
 	if (!osb->ocfs2_wq) {
 		status = -ENOMEM;
 		mlog_errno(status);
--
2.1.4

  parent reply	other threads:[~2016-08-30 20:51 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1472590094.git.bhaktipriya96@gmail.com>
2016-08-30 20:49 ` [PATCH v2 1/4] fs/ocfs2/dlmfs: " Bhaktipriya Shridhar
2016-08-30 20:50 ` [PATCH v2 2/4] fs/ocfs2/cluster: " Bhaktipriya Shridhar
2016-08-30 20:50 ` Bhaktipriya Shridhar [this message]
2016-08-30 20:51 ` [PATCH v2 4/4] fs/ocfs2/dlm: " Bhaktipriya Shridhar
2016-08-31 14:31   ` Tejun Heo

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