From: Bart Van Assche <Bart.VanAssche@wdc.com>
To: "tj@kernel.org" <tj@kernel.org>
Cc: "hch@lst.de" <hch@lst.de>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"axboe@kernel.dk" <axboe@kernel.dk>
Subject: Re: [PATCH] blk-mq: Fix a race between resetting the timer and completion handling
Date: Mon, 5 Feb 2018 21:33:03 +0000 [thread overview]
Message-ID: <1517866382.3764.43.camel@wdc.com> (raw)
In-Reply-To: <20180205210601.GP1121507@devbig577.frc2.facebook.com>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next prev parent reply other threads:[~2018-02-05 21:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-01 22:49 [PATCH] blk-mq: Fix a race between resetting the timer and completion handling Bart Van Assche
2018-02-05 21:06 ` Tejun Heo
2018-02-05 21:33 ` Bart Van Assche [this message]
2018-02-05 21:37 ` tj
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=1517866382.3764.43.camel@wdc.com \
--to=bart.vanassche@wdc.com \
--cc=axboe@kernel.dk \
--cc=hch@lst.de \
--cc=linux-block@vger.kernel.org \
--cc=tj@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