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From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org
Cc: torvalds@linux-foundation.org, ebiederm@xmission.com,
	metze@samba.org, oleg@redhat.com, linux-kernel@vger.kernel.org
Subject: [PATCHSET v2 0/7] Allow signals for IO threads
Date: Fri, 26 Mar 2021 09:51:13 -0600	[thread overview]
Message-ID: <20210326155128.1057078-1-axboe@kernel.dk> (raw)

Hi,

For the v1 posting, see here:

https://lore.kernel.org/io-uring/20210326003928.978750-1-axboe@kernel.dk/

I've run this through the usual testing, and it's running long term right
now. I've tested the cases that Stefan reported, and we seem fine now.

Changes since v1:

- Catch fatal signals in get_signal() for PF_IO_WORKER. This is only a
  problem for nested signals, like SIGSTOP followed by SIGKILL. We
  can't have get_signal() calling do_exit() on behalf of the IO threads,
  they have cleanups to do. Thanks Stefan.

- Move signal masking to when the PF_IO_WORKER thread is created, and since
  we now handle SIGSTOP, unmask that as well. Thanks Oleg.

- Remove try_to_freeze() parts in IO threads, we don't need those anymore
  with the calling of get_signal().

- Minor cleanups.

 fs/io-wq.c       | 24 +++++++++++++++++-------
 fs/io_uring.c    | 12 ++++++++----
 kernel/fork.c    | 16 ++++++++--------
 kernel/freezer.c |  2 +-
 kernel/ptrace.c  |  2 +-
 kernel/signal.c  | 19 ++++++++++++-------
 6 files changed, 47 insertions(+), 28 deletions(-)

-- 
Jens Axboe



             reply	other threads:[~2021-03-26 15:52 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-26 15:51 Jens Axboe [this message]
2021-03-26 15:51 ` [PATCH 1/7] kernel: don't call do_exit() for PF_IO_WORKER threads Jens Axboe
2021-03-26 20:43   ` Eric W. Biederman
2021-03-26 22:11     ` Jens Axboe
2021-03-26 15:51 ` [PATCH 2/7] io_uring: handle signals for IO threads like a normal thread Jens Axboe
2021-03-26 20:29   ` Eric W. Biederman
2021-03-26 22:14     ` Jens Axboe
2021-03-26 22:23       ` Eric W. Biederman
2021-03-26 22:30         ` Jens Axboe
2021-03-26 22:35           ` Eric W. Biederman
2021-03-26 22:38             ` Jens Axboe
2021-03-26 22:49               ` Jens Axboe
2021-03-27 17:40                 ` Eric W. Biederman
2021-03-27 20:08                   ` Jens Axboe
2021-03-26 15:51 ` [PATCH 03/10] Revert "signal: don't allow sending any signals to PF_IO_WORKER threads" Jens Axboe
2021-03-26 15:51 ` [PATCH 3/7] kernel: stop masking signals in create_io_thread() Jens Axboe
2021-03-26 20:44   ` Eric W. Biederman
2021-03-26 15:51 ` [PATCH 04/10] Revert "kernel: treat PF_IO_WORKER like PF_KTHREAD for ptrace/signals" Jens Axboe
2021-03-26 15:51 ` [PATCH 4/7] Revert "signal: don't allow sending any signals to PF_IO_WORKER threads" Jens Axboe
2021-03-26 15:51 ` [PATCH 05/10] Revert "kernel: freezer should treat PF_IO_WORKER like PF_KTHREAD for freezing" Jens Axboe
2021-03-26 15:51 ` [PATCH 5/7] Revert "kernel: treat PF_IO_WORKER like PF_KTHREAD for ptrace/signals" Jens Axboe
2021-03-26 15:51 ` [PATCH 6/7] Revert "kernel: freezer should treat PF_IO_WORKER like PF_KTHREAD for freezing" Jens Axboe
2021-03-26 15:51 ` [PATCH 06/10] Revert "signal: don't allow STOP on PF_IO_WORKER threads" Jens Axboe
2021-03-26 15:51 ` [PATCH 7/7] " Jens Axboe
2021-03-26 15:51 ` [PATCH 07/10] io_uring: fix timeout cancel return code Jens Axboe
2021-03-26 15:51 ` [PATCH 08/10] io_uring: do post-completion chore on t-out cancel Jens Axboe
2021-03-26 15:51 ` [PATCH 09/10] io_uring: don't cancel-track common timeouts Jens Axboe
2021-03-26 15:51 ` [PATCH 10/10] io_uring: don't cancel extra on files match Jens Axboe
2021-03-26 15:54 ` [PATCHSET v2 0/7] Allow signals for IO threads Jens Axboe

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