io_uring/rsrc: use wq for quiescing

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Replace completions with waitqueues for rsrc data quiesce, the main
wakeup condition is when data refs hit zero. Note that data refs are
only changes under ->uring_lock, so we prepare before mutex_unlock()
reacquire it after taking the lock back. This change will be needed
in the next patch.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1d0dbc74b3b4fd67c8f01819e680c5e0da252956.1681395792.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2023-04-13 15:28:08 +01:00 • committed by Jens Axboe

parent eef81fcaa6

commit 4ea15b56f0

4 changed files with 14 additions and 7 deletions

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1

include/linux/io_uring_types.h

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1

io_uring/io_uring.c

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18

io_uring/rsrc.c

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1

io_uring/rsrc.h

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