linux-kernel - Re: [patch resend 1/3] block: allocate request memory local to request queue

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Message-ID: <551216F1.4010907@kernel.dk>
Date:	Tue, 24 Mar 2015 20:01:21 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Tejun Heo <tj@...nel.org>,
	Lars Ellenberg <drbd-dev@...ts.linbit.com>,
	drbd-user@...ts.linbit.com, linux-kernel@...r.kernel.org
Subject: Re: [patch resend 1/3] block: allocate request memory local to request
 queue

On 03/24/2015 05:21 PM, 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.

Applied to for-4.1/core, thanks.

-- 
Jens Axboe

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