From: Hao Xu <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Cc: [email protected],
[email protected]
Subject: Re: [PATCH v2 2/2] io_uring: ensure task_work gets run as part of cancelations
Date: Fri, 10 Dec 2021 15:31:06 +0800 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
在 2021/12/10 下午12:22, Jens Axboe 写道:
> On 12/9/21 8:29 PM, Hao Xu wrote:
>> 在 2021/12/10 上午12:16, Jens Axboe 写道:
>>> If we successfully cancel a work item but that work item needs to be
>>> processed through task_work, then we can be sleeping uninterruptibly
>>> in io_uring_cancel_generic() and never process it. Hence we don't
>>> make forward progress and we end up with an uninterruptible sleep
>>> warning.
>>>
>>> Add the waitqueue earlier to ensure that any wakeups from cancelations
>>> are seen, and switch to using uninterruptible sleep so that postponed
>> ^ typo
> Not really a typo, but should be killed from v2 for sure. I'll do that.
>
Don't know why the ^ char doesn't align with 'uninterruptible' ... here
I mean 'uninterruptible' is a typo
next prev parent reply other threads:[~2021-12-10 7:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-09 15:59 [PATCHSET 0/2] Cancelation fixes Jens Axboe
2021-12-09 15:59 ` [PATCH 1/2] io_uring: check tctx->in_idle when decrementing inflight_tracked Jens Axboe
2021-12-10 7:21 ` Hao Xu
2021-12-10 13:47 ` Jens Axboe
2021-12-09 15:59 ` [PATCH 2/2] io_uring: ensure task_work gets run as part of cancelations Jens Axboe
2021-12-09 16:16 ` [PATCH v2 " Jens Axboe
2021-12-10 3:29 ` Hao Xu
2021-12-10 4:22 ` Jens Axboe
2021-12-10 7:31 ` Hao Xu [this message]
2021-12-10 13:45 ` Jens Axboe
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=281d4248-676e-efc5-d95a-d848cbf0df41@linux.alibaba.com \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/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