[RFC 0/3] reduce CPU usage on exit for IOPOLL

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

[1,2] are small preps for the future that should change
nothing functionally.

[3] helps to reduce CPU usage on exit. We don't care about latency
and CQEs when io_uring is going away, so checking it every HZ/20
should be enough
Please, check the assumptions, because I hope that nobody expects
 ->iopoll() to do real work but not just completing.

Pavel Begunkov (3):
  io_uring: partially inline io_iopoll_getevents()
  io_uring: remove nr_events arg from iopoll_check()
  io_uring: don't burn CPU for iopoll on exit

 fs/io_uring.c | 39 ++++++++++++++++++---------------------
 1 file changed, 18 insertions(+), 21 deletions(-)

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2.24.0