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Message-ID: <20180402220136.GI388343@devbig577.frc2.facebook.com>
Date: Mon, 2 Apr 2018 15:01:36 -0700
From: "tj@...nel.org" <tj@...nel.org>
To: Bart Van Assche <Bart.VanAssche@....com>
Cc: "kernel-team@...com" <kernel-team@...com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
"axboe@...nel.dk" <axboe@...nel.dk>
Subject: Re: [PATCH 2/2] blk-mq: Fix request handover from timeout path to
normal execution
Hello,
On Mon, Apr 02, 2018 at 09:56:41PM +0000, Bart Van Assche wrote:
> This patch increases the time during which .aborted_gstate == .gstate if the
> timeout is reset. Does that increase the chance that a completion will be missed
> if the request timeout is reset?
It sure does, but we're comparing an outright kernel bug vs. an
inherently opportunistic mechanism being a bit more lossy. I think
the answer is pretty clear.
Thanks.
--
tejun
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