[PATCH v3 for-5.13 00/17] ctx wide rsrc nodes + other stuff

[Pavel Begunkov <asml.silence@gmail.com>]

1-7 implement ctx wide rsrc nodes. The main idea here is to make make
rsrc nodes (aka ref nodes) to be per ctx rather than per rsrc_data, that
is a requirement for having multiple resource types. All the meat to it
in 7/7. Btw improve rsrc API, because it was too easy to misuse.

8-17 are necessarily related cleanups

v2: io_rsrc_node_destroy() last rsrc_node on ctx_free()
v3: add 8-17, 1-7 are unchanged

Pavel Begunkov (17):
  io_uring: name rsrc bits consistently
  io_uring: simplify io_rsrc_node_ref_zero
  io_uring: use rsrc prealloc infra for files reg
  io_uring: encapsulate rsrc node manipulations
  io_uring: move rsrc_put callback into io_rsrc_data
  io_uring: refactor io_queue_rsrc_removal()
  io_uring: ctx-wide rsrc nodes
  io_uring: reuse io_rsrc_node_destroy()
  io_uring: remove useless is_dying check on quiesce
  io_uring: refactor rw reissue
  io_uring: combine lock/unlock sections on exit
  io_uring: better ref handling in poll_remove_one
  io_uring: remove unused hash_wait
  io_uring: refactor io_async_cancel()
  io_uring: improve import_fixed overflow checks
  io_uring: store reg buffer end instead of length
  io_uring: kill unused forward decls

 fs/io_uring.c | 333 ++++++++++++++++++++------------------------------
 1 file changed, 135 insertions(+), 198 deletions(-)

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2.24.0