Merge tag 'for-5.18/io_uring-2022-04-01' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A little bit all over the map, some regression fixes for this merge
  window, and some general fixes that are stable bound. In detail:

   - Fix an SQPOLL memory ordering issue (Almog)

   - Accept fixes (Dylan)

   - Poll fixes (me)

   - Fixes for provided buffers and recycling (me)

   - Tweak to IORING_OP_MSG_RING command added in this merge window (me)

   - Memory leak fix (Pavel)

   - Misc fixes and tweaks (Pavel, me)"

* tag 'for-5.18/io_uring-2022-04-01' of git://git.kernel.dk/linux-block:
  io_uring: defer msg-ring file validity check until command issue
  io_uring: fail links if msg-ring doesn't succeeed
  io_uring: fix memory leak of uid in files registration
  io_uring: fix put_kbuf without proper locking
  io_uring: fix invalid flags for io_put_kbuf()
  io_uring: improve req fields comments
  io_uring: enable EPOLLEXCLUSIVE for accept poll
  io_uring: improve task work cache utilization
  io_uring: fix async accept on O_NONBLOCK sockets
  io_uring: remove IORING_CQE_F_MSG
  io_uring: add flag for disabling provided buffer recycling
  io_uring: ensure recv and recvmsg handle MSG_WAITALL correctly
  io_uring: don't recycle provided buffer if punted to async worker
  io_uring: fix assuming triggered poll waitqueue is the single poll
  io_uring: bump poll refs to full 31-bits
  io_uring: remove poll entry from list when canceling all
  io_uring: fix memory ordering when SQPOLL thread goes to sleep
  io_uring: ensure that fsnotify is always called
  io_uring: recycle provided before arming poll

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