From: Lee Jones <[email protected]>
To: Pavel Begunkov <[email protected]>, [email protected]
Cc: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH] io_uring: return back safer resurrect
Date: Wed, 16 Mar 2022 16:18:16 +0000 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <7a080c20f686d026efade810b116b72f88abaff9.1618101759.git.asml.silence@gmail.com>
Stable Team,
> Revert of revert of "io_uring: wait potential ->release() on resurrect",
> which adds a helper for resurrect not racing completion reinit, as was
> removed because of a strange bug with no clear root or link to the
> patch.
>
> Was improved, instead of rcu_synchronize(), just wait_for_completion()
> because we're at 0 refs and it will happen very shortly. Specifically
> use non-interruptible version to ignore all pending signals that may
> have ended prior interruptible wait.
>
> This reverts commit cb5e1b81304e089ee3ca948db4d29f71902eb575.
>
> Signed-off-by: Pavel Begunkov <[email protected]>
> ---
> fs/io_uring.c | 18 ++++++++++++++----
> 1 file changed, 14 insertions(+), 4 deletions(-)
Please back-port this as far as it will apply.
Definitely through v5.10.y.
It solves a critical bug.
Subject: "io_uring: return back safer resurrect"
Upstream commit:: f70865db5ff35f5ed0c7e9ef63e7cca3d4947f04
--
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2022-03-16 16:18 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-11 0:46 [PATCH 5.13 00/16] random 5.13 patches Pavel Begunkov
2021-04-11 0:46 ` [PATCH 01/16] io_uring: unify task and files cancel loops Pavel Begunkov
2021-04-11 0:46 ` [PATCH 02/16] io_uring: track inflight requests through counter Pavel Begunkov
2021-04-11 0:46 ` [PATCH 03/16] io_uring: unify files and task cancel Pavel Begunkov
2021-04-11 0:46 ` [PATCH 04/16] io_uring: refactor io_close Pavel Begunkov
2021-04-11 0:46 ` [PATCH 05/16] io_uring: enable inline completion for more cases Pavel Begunkov
2021-04-11 0:46 ` [PATCH 06/16] io_uring: refactor compat_msghdr import Pavel Begunkov
2021-04-11 0:46 ` [PATCH 07/16] io_uring: optimise non-eventfd post-event Pavel Begunkov
2021-04-11 0:46 ` [PATCH 08/16] io_uring: always pass cflags into fill_event() Pavel Begunkov
2021-04-11 0:46 ` [PATCH 09/16] io_uring: optimise fill_event() by inlining Pavel Begunkov
2021-04-11 0:46 ` [PATCH 10/16] io_uring: simplify io_rsrc_data refcounting Pavel Begunkov
2021-04-11 0:46 ` [PATCH 11/16] io_uring: add buffer unmap helper Pavel Begunkov
2021-04-11 0:46 ` [PATCH 12/16] io_uring: cleanup buffer register Pavel Begunkov
2021-04-11 0:46 ` [PATCH 13/16] io_uring: split file table from rsrc nodes Pavel Begunkov
2021-04-11 0:46 ` [PATCH 14/16] io_uring: improve sqo stop Pavel Begunkov
2021-04-11 0:46 ` [PATCH 15/16] io_uring: improve hardlink code generation Pavel Begunkov
2021-04-11 0:46 ` [PATCH 16/16] io_uring: return back safer resurrect Pavel Begunkov
2021-05-10 2:22 ` yangerkun
2021-05-10 9:15 ` Pavel Begunkov
2021-05-11 1:11 ` yangerkun
2022-03-16 16:18 ` Lee Jones [this message]
2022-03-16 16:38 ` [PATCH] " Greg KH
2022-03-16 16:46 ` Lee Jones
2021-04-11 2:38 ` [PATCH 5.13 00/16] random 5.13 patches 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] \
[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