Files
linux/include/linux
Linus Torvalds 3a166bdbf3 Merge tag 'for-5.19/io_uring-2022-05-22' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe:
 "Here are the main io_uring changes for 5.19. This contains:

   - Fixes for sparse type warnings (Christoph, Vasily)

   - Support for multi-shot accept (Hao)

   - Support for io_uring managed fixed files, rather than always
     needing the applicationt o manage the indices (me)

   - Fix for a spurious poll wakeup (Dylan)

   - CQE overflow fixes (Dylan)

   - Support more types of cancelations (me)

   - Support for co-operative task_work signaling, rather than always
     forcing an IPI (me)

   - Support for doing poll first when appropriate, rather than always
     attempting a transfer first (me)

   - Provided buffer cleanups and support for mapped buffers (me)

   - Improve how io_uring handles inflight SCM files (Pavel)

   - Speedups for registered files (Pavel, me)

   - Organize the completion data in a struct in io_kiocb rather than
     keep it in separate spots (Pavel)

   - task_work improvements (Pavel)

   - Cleanup and optimize the submission path, in general and for
     handling links (Pavel)

   - Speedups for registered resource handling (Pavel)

   - Support sparse buffers and file maps (Pavel, me)

   - Various fixes and cleanups (Almog, Pavel, me)"

* tag 'for-5.19/io_uring-2022-05-22' of git://git.kernel.dk/linux-block: (111 commits)
  io_uring: fix incorrect __kernel_rwf_t cast
  io_uring: disallow mixed provided buffer group registrations
  io_uring: initialize io_buffer_list head when shared ring is unregistered
  io_uring: add fully sparse buffer registration
  io_uring: use rcu_dereference in io_close
  io_uring: consistently use the EPOLL* defines
  io_uring: make apoll_events a __poll_t
  io_uring: drop a spurious inline on a forward declaration
  io_uring: don't use ERR_PTR for user pointers
  io_uring: use a rwf_t for io_rw.flags
  io_uring: add support for ring mapped supplied buffers
  io_uring: add io_pin_pages() helper
  io_uring: add buffer selection support to IORING_OP_NOP
  io_uring: fix locking state for empty buffer group
  io_uring: implement multishot mode for accept
  io_uring: let fast poll support multishot
  io_uring: add REQ_F_APOLL_MULTISHOT for requests
  io_uring: add IORING_ACCEPT_MULTISHOT for accept
  io_uring: only wake when the correct events are set
  io_uring: avoid io-wq -EAGAIN looping for !IOPOLL
  ...
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