io_uring: optimise iowq refcounting

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If a requests is forwarded into io-wq, there is a good chance it hasn't
been refcounted yet and we can save one req_ref_get() by setting the
refcount number to the right value directly.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2d53f4449faaf73b4a4c5de667fc3c176d974860.1628981736.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-08-15 10:40:18 +01:00 • committed by Jens Axboe

parent a141dd896f

commit 48dcd38d73

1 changed files with 16 additions and 9 deletions

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fs/io_uring.c

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