[PATCH v2 0/5] async punting improvements for io_uring

[Pavel Begunkov]

This cleans up io-wq punting paths, doing small fixes and removing
unnecessary logic from different submission paths. The last patch is
a resubmission after a rebase bundled into this patchset.

v2:
- remove pid-related comment, as it's fixed separately
- make ("add missing io_req_cancelled()") first
  in the series, so it may be picked for 5.6

Pavel Begunkov (5):
  io_uring: add missing io_req_cancelled()
  io_uring: remove REQ_F_MUST_PUNT
  io_uring: don't call work.func from sync ctx
  io_uring: don't do full *prep_worker() from io-wq
  io_uring: remove req->in_async

 fs/io_uring.c | 123 ++++++++++++++++++++++++++------------------------
 1 file changed, 65 insertions(+), 58 deletions(-)

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2.24.0