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Groups > linux.kernel > #1476032

[PATCH net-next 9/9] fs/afs/flock: Remove deprecated create_singlethread_workqueue

From David Howells <dhowells@redhat.com>
Newsgroups linux.kernel
Subject [PATCH net-next 9/9] fs/afs/flock: Remove deprecated create_singlethread_workqueue
Date 2016-09-04 23:10 +0200
Message-ID <sdMPU-2JV-23@gated-at.bofh.it> (permalink)
References <sdMPU-2JV-11@gated-at.bofh.it>
Organization Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903

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From: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>

The workqueue "afs_lock_manager" queues work item &vnode->lock_work,
per vnode. Since there can be multiple vnodes and since their work items
can be executed concurrently, 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 because the workqueue is being used on a memory reclaim
path.

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

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
---

 fs/afs/flock.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index d91a9c9cfbd0..3191dff2c156 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -36,8 +36,8 @@ static int afs_init_lock_manager(void)
 	if (!afs_lock_manager) {
 		mutex_lock(&afs_lock_manager_mutex);
 		if (!afs_lock_manager) {
-			afs_lock_manager =
-				create_singlethread_workqueue("kafs_lockd");
+			afs_lock_manager = alloc_workqueue("kafs_lockd",
+							   WQ_MEM_RECLAIM, 0);
 			if (!afs_lock_manager)
 				ret = -ENOMEM;
 		}

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Thread

[PATCH net-next 0/9] rxrpc: Small fixes David Howells <dhowells@redhat.com> - 2016-09-04 23:10 +0200
  [PATCH net-next 9/9] fs/afs/flock: Remove deprecated  create_singlethread_workqueue David Howells <dhowells@redhat.com> - 2016-09-04 23:10 +0200
  [PATCH net-next 5/9] rxrpc: Don't change the epoch David Howells <dhowells@redhat.com> - 2016-09-04 23:10 +0200
  [PATCH net-next 6/9] fs/afs/vlocation: Remove deprecated  create_singlethread_workqueue David Howells <dhowells@redhat.com> - 2016-09-04 23:20 +0200
  [PATCH net-next 3/9] rxrpc: The client call state must be changed  before attachment to conn David Howells <dhowells@redhat.com> - 2016-09-04 23:20 +0200
  [PATCH net-next 4/9] rxrpc: Randomise epoch and starting client  conn ID values David Howells <dhowells@redhat.com> - 2016-09-04 23:20 +0200
    RE: [PATCH net-next 4/9] rxrpc: Randomise epoch and starting client  conn ID values David Laight <David.Laight@ACULAB.COM> - 2016-09-05 17:10 +0200
      Re: [PATCH net-next 4/9] rxrpc: Randomise epoch and starting client conn ID values David Howells <dhowells@redhat.com> - 2016-09-05 18:30 +0200
        Re: [PATCH net-next 4/9] rxrpc: Randomise epoch and starting client  conn ID values Jeffrey Altman <jaltman@auristor.com> - 2016-09-06 04:20 +0200
  [PATCH net-next 7/9] fs/afs/rxrpc: Remove deprecated  create_singlethread_workqueue David Howells <dhowells@redhat.com> - 2016-09-04 23:20 +0200
  [PATCH net-next 8/9] fs/afs/callback: Remove deprecated  create_singlethread_workqueue David Howells <dhowells@redhat.com> - 2016-09-04 23:20 +0200
  Re: [PATCH net-next 0/9] rxrpc: Small fixes David Miller <davem@davemloft.net> - 2016-09-06 23:00 +0200

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