linux-kernel - Re: [patch] block: allocate request memory local to request queue

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Date:	Sat, 7 Mar 2015 22:01:37 -0500
From:	Tejun Heo <tj@...nel.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org
Subject: Re: [patch] block: allocate request memory local to request queue

On Sat, Mar 07, 2015 at 06:53:46PM -0800, David Rientjes wrote:
> blk_init_rl() allocates a mempool using mempool_create_node() with node
> local memory.  This only allocates the mempool and element list locally
> to the requeue queue node.
> 
> What we really want to do is allocate the request itself local to the
> queue.  To do this, we need our own alloc and free functions that will
> allocate from request_cachep and pass the request queue node in to prefer
> node local memory.
> 
> Cc: Tejun Heo <tj@...nel.org>
> Signed-off-by: David Rientjes <rientjes@...gle.com>

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

Thanks.

-- 
tejun
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