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From: Pavel Begunkov <[email protected]>
To: Jens Axboe <[email protected]>, [email protected]
Subject: [PATCH 5.12 0/8] remove task file notes
Date: Thu,  4 Mar 2021 13:59:23 +0000	[thread overview]
Message-ID: <[email protected]> (raw)

1-2 fixes a race for io-wq, can be considered separately

3-7 introduce a mapping from ctx to all tctx, and using that removes
file notes, i.e. taking a io_uring file note previously stored in
task->io_uring->xa. It's needed because we don't free io_uring ctx
until all submitters die/exec, and it became worse after killing
->flush().
There are rough corner in a form of not behaving nicely, I'll address
in follow-up patches.

8/8 just a very useful warning.

Pavel Begunkov (8):
  io_uring: cancel-match based on flags
  io_uring: reliably cancel linked timeouts
  io_uring: make del_task_file more forgiving
  io_uring: introduce ctx to tctx back map
  io_uring: do ctx initiated file note removal
  io_uring: don't take task ring-file notes
  io_uring: index io_uring->xa by ctx not file
  io_uring: warn when ring exit takes too long

 fs/io_uring.c            | 146 ++++++++++++++++++++++++++++++---------
 include/linux/io_uring.h |   2 +-
 2 files changed, 113 insertions(+), 35 deletions(-)

-- 
2.24.0


             reply	other threads:[~2021-03-04 14:05 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-04 13:59 Pavel Begunkov [this message]
2021-03-04 13:59 ` [PATCH 1/8] io_uring: cancel-match based on flags Pavel Begunkov
2021-03-04 13:59 ` [PATCH 2/8] io_uring: reliably cancel linked timeouts Pavel Begunkov
2021-03-04 13:59 ` [PATCH 3/8] io_uring: make del_task_file more forgiving Pavel Begunkov
2021-03-04 13:59 ` [PATCH 4/8] io_uring: introduce ctx to tctx back map Pavel Begunkov
2021-03-04 13:59 ` [PATCH 5/8] io_uring: do ctx initiated file note removal Pavel Begunkov
2021-03-04 13:59 ` [PATCH 6/8] io_uring: don't take task ring-file notes Pavel Begunkov
2021-03-04 13:59 ` [PATCH 7/8] io_uring: index io_uring->xa by ctx not file Pavel Begunkov
2021-03-04 13:59 ` [PATCH 8/8] io_uring: warn when ring exit takes too long Pavel Begunkov
2021-03-05  4:25   ` Jens Axboe
2021-03-05 11:15     ` Pavel Begunkov

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