Merge tag 'for-5.18/io_uring-2022-03-18' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:

 - Fixes for current file position. Still doesn't have the f_pos_lock
   sorted, but it's a step in the right direction (Dylan)

 - Tracing updates (Dylan, Stefan)

 - Improvements to io-wq locking (Hao)

 - Improvements for provided buffers (me, Pavel)

 - Support for registered file descriptors (me, Xiaoguang)

 - Support for ring messages (me)

 - Poll improvements (me)

 - Fix for fixed buffers and non-iterator reads/writes (me)

 - Support for NAPI on sockets (Olivier)

 - Ring quiesce improvements (Usama)

 - Misc fixes (Olivier, Pavel)

* tag 'for-5.18/io_uring-2022-03-18' of git://git.kernel.dk/linux-block: (42 commits)
  io_uring: terminate manual loop iterator loop correctly for non-vecs
  io_uring: don't check unrelated req->open.how in accept request
  io_uring: manage provided buffers strictly ordered
  io_uring: fold evfd signalling under a slower path
  io_uring: thin down io_commit_cqring()
  io_uring: shuffle io_eventfd_signal() bits around
  io_uring: remove extra barrier for non-sqpoll iopoll
  io_uring: fix provided buffer return on failure for kiocb_done()
  io_uring: extend provided buf return to fails
  io_uring: refactor timeout cancellation cqe posting
  io_uring: normilise naming for fill_cqe*
  io_uring: cache poll/double-poll state with a request flag
  io_uring: cache req->apoll->events in req->cflags
  io_uring: move req->poll_refs into previous struct hole
  io_uring: make tracing format consistent
  io_uring: recycle apoll_poll entries
  io_uring: remove duplicated member check for io_msg_ring_prep()
  io_uring: allow submissions to continue on error
  io_uring: recycle provided buffers if request goes async
  io_uring: ensure reads re-import for selected buffers
  ...

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