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(parent: f80a50a) | patch
io_uring: optimise rw comletion handlers
authorPavel Begunkov <asml.silence@gmail.com>
Thu, 14 Oct 2021 15:10:14 +0000 (16:10 +0100)
committerJens Axboe <axboe@kernel.dk>
Tue, 19 Oct 2021 11:49:55 +0000 (05:49 -0600)
commit258f3a7f84d11ce1d6cb1f60fe524bb37f7c1019
treeffae56412c1b947b3e96ed20eefbc6711e365c05tree | snapshot
parentf80a50a632d6f5c64729563892b0deb95d563f6dcommit | diff
io_uring: optimise rw comletion handlers

Don't override req->result in io_complete_rw_iopoll() when it's already
of the same value, we have an if just above it, so move the assignment
there. Also, add one simle unlikely() in __io_complete_rw_common().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8dfeb4f84026a20172bcf82c05010abe955874ae.1634144845.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | history
Domain: System / Kernel;