io_uring: rearrange io_read()/write()

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Combine force_nonblock branches (which is already optimised by
compiler), flip branches so the most hot/common path is the first, e.g.
as with non on-stack iov setup, and add extra likely/unlikely
attributions for errror paths.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2c2536c5896d70994de76e387ea09a0402173a3f.1634144845.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-10-14 16:10:19 +01:00 • committed by Jens Axboe

parent 5e49c973fc

commit 607b6fb801

1 changed files with 37 additions and 38 deletions

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fs/io_uring.c

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