[RFC 0/5] leverage completion cache for poll requests

[Hao Xu <haoxu@linux.alibaba.com>]

1st is a non-related code clean
2nd ~ 4th are fixes.
5th is the the main logic, I tested it with an echo-server, both in
single-shot mode and multishot mode poll, not much difference compared
to code before with regard to req/s. But that may be resulted from my
poor network knowledge, feel free to test it and leave comments.

Hao Xu (5):
  io_uring: return boolean value for io_alloc_async_data
  io_uring: code clean for io_poll_complete()
  io_uring: fix race between poll completion and cancel_hash insertion
  io_uring: fix lacking of EPOLLONESHOT
  io_uring: leverage completion cache for poll requests

 fs/io_uring.c | 70 ++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 53 insertions(+), 17 deletions(-)

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2.24.4