linux-kernel - Re: [PATCH] blk-mq: cache rq->q

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Message-ID: <52580A65.2050401@kernel.dk>
Date:	Fri, 11 Oct 2013 08:25:41 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	Shaohua Li <shli@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] blk-mq: cache rq->q

On 10/10/2013 10:11 PM, Shaohua Li wrote:
> 
> If a tag is freed, the request might be used very soon. There is a short window
> rq->q is null, so cache it.

Thanks, good catch! Applied.

-- 
Jens Axboe

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