[GIT PULL] io_uring fixes for 5.17-rc1

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

io_uring fixes for the 5.17-rc1 merge window:

- Fix the io_uring POLLFREE handling, similarly to how it was done for
  aio (Pavel)

- Remove (now) unused function (Jiapeng)

- Small series fixing an issue with work cancelations. A window exists
  where work isn't locatable in the pending list, and isn't active in a
  worker yet either. (me)

Please pull!


The following changes since commit fb3b0673b7d5b477ed104949450cd511337ba3c6:

  Merge tag 'mailbox-v5.17' of git://git.linaro.org/landing-teams/working/fujitsu/integration (2022-01-13 11:19:07 -0800)

are available in the Git repository at:

  git://git.kernel.dk/linux-block.git tags/io_uring-5.17-2022-01-21

for you to fetch changes up to 73031f761cb7c2397d73957d14d041c31fe58c34:

  io-wq: delete dead lock shuffling code (2022-01-19 13:11:58 -0700)

----------------------------------------------------------------
io_uring-5.17-2022-01-21

----------------------------------------------------------------
Jens Axboe (7):
      io-wq: remove useless 'work' argument to __io_worker_busy()
      io-wq: make io_worker lock a raw spinlock
      io-wq: invoke work cancelation with wqe->lock held
      io-wq: perform both unstarted and started work cancelations in one go
      io-wq: add intermediate work step between pending list and active work
      io_uring: perform poll removal even if async work removal is successful
      io-wq: delete dead lock shuffling code

Jiapeng Chong (1):
      io_uring: Remove unused function req_ref_put

Pavel Begunkov (1):
      io_uring: fix UAF due to missing POLLFREE handling

 fs/io-wq.c    | 91 ++++++++++++++++++++++++++++++++++++-----------------------
 fs/io_uring.c | 79 ++++++++++++++++++++++++++++++++++++++-------------
 2 files changed, 116 insertions(+), 54 deletions(-)

-- 
Jens Axboe