io_uring/rsrc: protect node refs with uring_lock

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Currently, for nodes we have an atomic counter and some cached
(non-atomic) refs protected by uring_lock. Let's put all ref
manipulations under uring_lock and get rid of the atomic part.
It's free as in all cases we care about we already hold the lock.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/25b142feed7d831008257d90c8b17c0115d4fc15.1680576071.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2023-04-04 13:39:49 +01:00 • committed by Jens Axboe

parent 03adabe81a

commit ef8ae64ffa

3 changed files with 21 additions and 56 deletions

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18

io_uring/io_uring.c

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30

io_uring/rsrc.c

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29

io_uring/rsrc.h

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