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io_uring: move our reference counting into a header Signed-off-by: Jens Axboe <axboe@kernel.dk> 2022-05-25 08:56:52 -06:00



io_uring: make io_uring_types.h public Move io_uring types to linux/include, need them public so tracing can see the definitions and we can clean trace/events/io_uring.h Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/a15f12e8cb7289b2de0deaddcc7518d98a132d17.1655384063.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> 2022-06-16 13:57:19 +01:00
io_uring: move our reference counting into a header Signed-off-by: Jens Axboe <axboe@kernel.dk> 2022-05-25 08:56:52 -06:00













io_uring: always do atomic put from iowq [ Upstream commit 390513642ee6763c7ada07f0a1470474986e6c1c ] io_uring always switches requests to atomic refcounting for iowq execution before there is any parallilism by setting REQ_F_REFCOUNT, and the flag is not cleared until the request completes. That should be fine as long as the compiler doesn't make up a non existing value for the flags, however KCSAN still complains when the request owner changes oter flag bits: BUG: KCSAN: data-race in io_req_task_cancel / io_wq_free_work ... read to 0xffff888117207448 of 8 bytes by task 3871 on cpu 0: req_ref_put_and_test io_uring/refs.h:22 [inline] Skip REQ_F_REFCOUNT checks for iowq, we know it's set. Reported-by: syzbot+903a2ad71fb3f1e47cf5@syzkaller.appspotmail.com Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/d880bc27fb8c3209b54641be4ff6ac02b0e5789a.1743679736.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org> 2025-04-03 12:29:30 +01:00






io_uring: move our reference counting into a header Signed-off-by: Jens Axboe <axboe@kernel.dk> 2022-05-25 08:56:52 -06:00















io_uring: kill dead code in io_req_complete_post Since commit 8f6c829491fe ("io_uring: remove struct io_tw_state::locked"), io_req_complete_post() is only called from io-wq submit work, where the request reference is guaranteed to be grabbed and won't drop to zero in io_req_complete_post(). Kill the dead code, meantime add req_ref_put() to put the reference. Cc: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/1d8297e2046553153e763a52574f0e0f4d512f86.1712331455.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> 2024-04-05 16:50:02 +01:00






io_uring: move our reference counting into a header Signed-off-by: Jens Axboe <axboe@kernel.dk> 2022-05-25 08:56:52 -06:00

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62 lines

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