From: Jens Axboe <axboe@kernel.dk>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Pavel Begunkov <asml.silence@gmail.com>,
io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 3/3] io_uring: refactor io_sq_offload_create()
Date: Fri, 23 Jul 2021 11:56:29 -0600 [thread overview]
Message-ID: <640bdb4e-f4d9-a5b8-5b7f-5265b39c8044@kernel.dk> (raw)
In-Reply-To: <591b4a1e-606a-898c-7470-b5a1be621047@kernel.dk>
On 7/23/21 11:36 AM, Jens Axboe wrote:
> On 7/23/21 11:32 AM, Jens Axboe wrote:
>> Outside of that, we're not submitting off release, only killing anything
>> pending. The only odd case there is iopoll, but that doesn't resubmit
>> here.
>
> OK perhaps I'm wrong on this one - if we have a pending iopoll request,
> and we run into the rare case of needing resubmit, we are doing that off
> the release path and that should not happen. Hence it could potentially
> happen for iosched and/or low queue depth devices, if you are using a
> ring for pure polling. I'll patch that up.
Will send out two patches for this. Note that I don't see this being a
real issue, as we explicitly gave the ring fd to another task, and being
that this is purely for read/write, it would result in -EFAULT anyway.
--
Jens Axboe
next prev parent reply other threads:[~2021-07-23 17:56 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-20 11:03 [PATCH 0/3] small 5.13 cleanups Pavel Begunkov
2021-04-20 11:03 ` [PATCH 1/3] io_uring: move inflight un-tracking into cleanup Pavel Begunkov
2021-04-20 11:03 ` [PATCH 2/3] io_uring: safer sq_creds putting Pavel Begunkov
2021-04-20 11:03 ` [PATCH 3/3] io_uring: refactor io_sq_offload_create() Pavel Begunkov
2021-07-22 21:59 ` Al Viro
2021-07-22 23:06 ` Jens Axboe
2021-07-22 23:30 ` Al Viro
2021-07-22 23:42 ` Jens Axboe
2021-07-23 0:10 ` Al Viro
2021-07-23 0:12 ` Al Viro
2021-07-23 16:17 ` Jens Axboe
2021-07-23 17:11 ` Al Viro
2021-07-23 17:32 ` Jens Axboe
2021-07-23 17:36 ` Jens Axboe
2021-07-23 17:56 ` Jens Axboe [this message]
2021-07-23 19:00 ` Al Viro
2021-07-23 20:10 ` Jens Axboe
2021-07-23 20:24 ` Al Viro
2021-07-23 22:32 ` Jens Axboe
2021-07-23 20:19 ` Al Viro
2021-07-23 23:45 ` Matthew Wilcox
2021-07-23 23:57 ` Jens Axboe
2021-07-24 1:31 ` Al Viro
2021-07-23 0:03 ` Al Viro
2021-07-23 9:59 ` Pavel Begunkov
2021-04-20 18:55 ` [PATCH 0/3] small 5.13 cleanups Jens Axboe
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