io_uring: optimise io_dismantle_req() fast path

Reshuffle io_dismantle_req() checks to put most of slow path stuff under
a single if.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-03-19 17:22:42 +00:00 • committed by Jens Axboe
commit 094bae49e5