io_uring: optimise io_req_task_work_add()

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Inline io_task_work_add() into io_req_task_work_add(). They both work
with a request, so keeping them separate doesn't make things much more
clear, but merging allows optimise it. Apart from small wins like not
reading req->ctx or not calculating @notify in the hot path, i.e. with
tctx->task_state set, it avoids doing wake_up_process() for every single
add, but only after actually done task_work_add().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2021-03-19 17:22:44 +00:00 • committed by Jens Axboe

parent e1d767f078

commit c15b79dee5

1 changed files with 18 additions and 32 deletions

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fs/io_uring.c

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