linux-kernel - Re: [PATCH BUGFIX] block, bfq: fix bug related to the burst

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Message-ID: <d12493f9-97a5-2004-dce4-eca32c458823@kernel.dk>
Date:   Mon, 9 Oct 2017 09:55:58 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Paolo Valente <paolo.valente@...aro.org>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        ulf.hansson@...aro.org, broonie@...nel.org, lee.tibbert@...il.com,
        oleksandr@...alenko.name, angeloruocco90@...il.com,
        philm@...jaro.org
Subject: Re: [PATCH BUGFIX] block, bfq: fix bug related to the burst_size
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On 10/09/2017 05:11 AM, Paolo Valente wrote:
> Hi Jens,
> unfortunately, the patch "block, bfq: decrease burst size when queues
> in burst exit", queued for 4.15 [1] introduces a bug, described in
> detail in the commit message of this patch. If triggered, this bug may
> cause loss of control on I/O-request service order.

Applied, but please remember to add a Fixes line when you have a patch
that fixes a problem introduced by a previous patch. For this one,
I added:

Fixes: 7cb04004fa37 ("block, bfq: decrease burst size when queues in burst exit")

-- 
Jens Axboe