From: Jens Axboe <axboe@fb.com>
To: Damien Le Moal <damien.lemoal@hgst.com>,
<linux-block@vger.kernel.org>, <hch@lst.de>, <hare@suse.de>
Subject: Re: [PATCH] block: Fix front merge check
Date: Wed, 13 Jul 2016 09:19:55 -0700 [thread overview]
Message-ID: <57866A2B.5000403@fb.com> (raw)
In-Reply-To: <1468387413-2754-1-git-send-email-damien.lemoal@hgst.com>
On 07/12/2016 10:23 PM, Damien Le Moal wrote:
> For a front merge, the maximum number of sectors of the
> request must be checked against the front merge BIO sector,
> not the current sector of the request.
Why does this matter? The merging should only happen before we start the
request, hence rq pos and first bio should be one and the same.
--
Jens Axboe
next prev parent reply other threads:[~2016-07-13 16:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-13 5:23 [PATCH] block: Fix front merge check Damien Le Moal
2016-07-13 5:42 ` Hannes Reinecke
2016-07-13 16:19 ` Jens Axboe [this message]
2016-07-14 1:23 ` Damien Le Moal
2016-07-21 3:38 ` Jens Axboe
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