linux-kernel - Re: [PATCH V5 15/17] block: track request size in blk_issue

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Date:   Mon, 9 Jan 2017 16:17:28 -0500
From:   Tejun Heo <tj@...nel.org>
To:     Shaohua Li <shli@...com>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com, axboe@...com, vgoyal@...hat.com
Subject: Re: [PATCH V5 15/17] block: track request size in blk_issue_stat

On Thu, Dec 15, 2016 at 12:33:06PM -0800, Shaohua Li wrote:
> Currently there is no way to know the request size when the request is
> finished. Next patch will need this info, so add to blk_issue_stat. With
> this, we will have 49bits to track time, which still is very long time.

Not necessarily an objection but do we really need to overload the
size field?  Would a normal extra field hurt too much?

Thanks.

-- 
tejun