public inbox for [email protected]
 help / color / mirror / Atom feed
From: Jens Axboe <[email protected]>
To: Pavel Begunkov <[email protected]>,
	Jackie Liu <[email protected]>
Cc: [email protected]
Subject: Re: [PATCH] io_uring: drain next sqe instead of shadowing
Date: Thu, 21 Nov 2019 06:50:49 -0700	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

On 11/21/19 8:23 AM, Pavel Begunkov wrote:
> On 11/21/2019 4:53 PM, Jens Axboe wrote:
>> On 11/21/19 7:28 AM, Pavel Begunkov wrote:
>>>>>
>>>>> Was that a reviewed-by from you? It'd be nice to get these more
>>>>> formally so I can add the attributes. I'll drop the other patch.
>>>>
>>>> I want to do more tests. There is no test machine at this time, at least
>>>> until tomorrow morning.
>>>>
>>> BTW, aside from the locking problem, that it fixes another one. If
>>> allocation for a shadow req is failed, io_submit_sqes() just continues
>>> without it ignoring draining.
>>
>> Indeed. BTW, your commit message is way too weak for this patch. It
>> doesn't explain why we're making this change at all. I'm going to fix
>> it up.
>>
> Yeah, I were going to do that today. This one is of quick-before-leaving
> kind, I didn't even looked up into the problem discussion properly.
> 
> It needs 2 problems statements + reported-by

Here's what I have:

https://git.kernel.dk/cgit/linux-block/commit/?h=for-5.5/io_uring-post&id=b1417baddedff723b22a4817753625350cfa895a


-- 
Jens Axboe


  reply	other threads:[~2019-11-21 15:26 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-20 23:07 [PATCH] io_uring: fix race with shadow drain deferrals Jens Axboe
2019-11-20 23:58 ` Jens Axboe
2019-11-21  1:32   ` Jackie Liu
2019-11-21  1:35     ` Jackie Liu
2019-11-21  1:40       ` Jens Axboe
2019-11-21  1:49         ` Jens Axboe
2019-11-21  1:57           ` Jackie Liu
2019-11-20 23:14             ` Jens Axboe
     [not found]               ` <[email protected]>
2019-11-20 23:03                 ` Jens Axboe
2019-11-21  8:54           ` [PATCH] io_uring: drain next sqe instead of shadowing Pavel Begunkov
     [not found]             ` <[email protected]>
2019-11-21  9:43               ` Pavel Begunkov
     [not found]                 ` <[email protected]>
2019-11-21 12:40                   ` Pavel Begunkov
     [not found]                     ` <[email protected]>
2019-11-21 13:47                       ` Jens Axboe
     [not found]                         ` <[email protected]>
2019-11-21 13:54                           ` Jens Axboe
     [not found]                         ` <[email protected]>
2019-11-21 14:28                           ` Pavel Begunkov
2019-11-21 13:53                             ` Jens Axboe
2019-11-21 15:23                               ` Pavel Begunkov
2019-11-21 13:50                                 ` Jens Axboe [this message]
2019-11-21  1:39     ` [PATCH] io_uring: fix race with shadow drain deferrals 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 \
    [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