[GIT PULL] io_uring fixes for 5.9-rc2

[Jens Axboe]

Hi Linus,

A few io_uring fixes:

- Make sure the head link cancelation includes async work

- Get rid of kiocb_wait_page_queue_init(), makes no sense to have it as
  a separate function since you moved it into io_uring itself

- io_import_iovec cleanups (Pavel, me)

- Use system_unbound_wq for ring exit work, to avoid spawning tons of
  these if we have tons of rings exiting at the same time

- Fix req->flags overflow flag manipulation (Pavel)

Please pull!


The following changes since commit 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5:

  Linux 5.9-rc1 (2020-08-16 13:04:57 -0700)

are available in the Git repository at:

  git://git.kernel.dk/linux-block.git tags/io_uring-5.9-2020-08-21

for you to fetch changes up to 867a23eab52847d41a0a6eae41a64d76de7782a8:

  io_uring: kill extra iovec=NULL in import_iovec() (2020-08-20 05:36:19 -0600)

----------------------------------------------------------------
io_uring-5.9-2020-08-21

----------------------------------------------------------------
Jens Axboe (4):
      io_uring: find and cancel head link async work on files exit
      io_uring: get rid of kiocb_wait_page_queue_init()
      io_uring: cleanup io_import_iovec() of pre-mapped request
      io_uring: use system_unbound_wq for ring exit work

Pavel Begunkov (3):
      io_uring: fix racy req->flags modification
      io_uring: comment on kfree(iovec) checks
      io_uring: kill extra iovec=NULL in import_iovec()

 fs/io_uring.c | 173 +++++++++++++++++++++++++++-------------------------------
 1 file changed, 79 insertions(+), 94 deletions(-)

-- 
Jens Axboe