From: "tj@kernel.org" <tj@kernel.org>
To: Bart Van Assche <Bart.VanAssche@wdc.com>
Cc: "kernel-team@fb.com" <kernel-team@fb.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"axboe@kernel.dk" <axboe@kernel.dk>
Subject: Re: [PATCH 2/2] blk-mq: Fix request handover from timeout path to normal execution
Date: Mon, 2 Apr 2018 15:01:36 -0700 [thread overview]
Message-ID: <20180402220136.GI388343@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <afef8f4812b357deeadc0999f4c85d7b0049b738.camel@wdc.com>
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
next prev parent reply other threads:[~2018-04-02 22:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-02 19:00 [PATCH 1/2] blk-mq: Factor out [s]rcu synchronization Tejun Heo
2018-04-02 19:01 ` [PATCH 2/2] blk-mq: Fix request handover from timeout path to normal execution Tejun Heo
2018-04-02 21:08 ` Bart Van Assche
2018-04-02 21:10 ` Tejun Heo
2018-04-02 21:31 ` Bart Van Assche
2018-04-02 21:39 ` tj
2018-04-02 21:56 ` Bart Van Assche
2018-04-02 22:01 ` tj [this message]
2018-04-02 22:09 ` Bart Van Assche
2018-04-02 22:16 ` tj
2018-04-02 22:49 ` Bart Van Assche
2018-04-02 20:48 ` [PATCH 1/2] blk-mq: Factor out [s]rcu synchronization Bart Van Assche
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180402220136.GI388343@devbig577.frc2.facebook.com \
--to=tj@kernel.org \
--cc=Bart.VanAssche@wdc.com \
--cc=axboe@kernel.dk \
--cc=kernel-team@fb.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).