linux-kernel - Re: [PATCH] dm-bufio: Remove deprecated create_singlethread

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Message-ID: <20160831142149.GH12660@htj.duckdns.org>
Date:   Wed, 31 Aug 2016 10:21:49 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Bhaktipriya Shridhar <bhaktipriya96@...il.com>
Cc:     Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com,
        Shaohua Li <shli@...nel.org>, linux-raid@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dm-bufio: Remove deprecated create_singlethread_workqueue

On Tue, Aug 30, 2016 at 10:19:11PM +0530, Bhaktipriya Shridhar wrote:
> The workqueue "dm_bufio_wq" queues a single work item &dm_bufio_work 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 since md / dm are block multi disk
> drivers and require forward progress under memory pressure.
> 
> Since there are fixed number of work items, explicit concurrency
> limit is unnecessary here.
> 
> Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@...il.com>

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun