linux-kernel - [PATCH] net/mlx5_core/pagealloc: Remove deprecated create_singlethread

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Date:	Thu, 28 Jul 2016 13:49:49 +0530
From:	Bhaktipriya Shridhar <bhaktipriya96@...il.com>
To:	Matan Barak <matanb@...lanox.com>,
	Leon Romanovsky <leonro@...lanox.com>
Cc:	netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>
Subject: [PATCH] net/mlx5_core/pagealloc: Remove deprecated
 create_singlethread_workqueue

A dedicated workqueue has been used since the work items are being used
on a memory reclaim path. WQ_MEM_RECLAIM has been set to guarantee forward
progress under memory pressure.

The workqueue has a single work item. Hence, alloc_workqueue() is used
instead of alloc_ordered_workqueue() since ordering is unnecessary when
there's only one work item.

Explicit concurrency limit is unnecessary here since there are only a
fixed number of work items.

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@...il.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
index 9eeee05..7c85262 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
@@ -552,7 +552,8 @@ void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev)

 int mlx5_pagealloc_start(struct mlx5_core_dev *dev)
 {
-	dev->priv.pg_wq = create_singlethread_workqueue("mlx5_page_allocator");
+	dev->priv.pg_wq = alloc_workqueue("mlx5_page_allocator",
+					  WQ_MEM_RECLAIM, 0);
 	if (!dev->priv.pg_wq)
 		return -ENOMEM;

--
2.1.4