io_uring: fix racy overflow count reporting

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All ->cq_overflow modifications should be under completion_lock,
otherwise it can report a wrong number to the userspace. Fix it in
io_uring_cancel_files().

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

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Pavel Begunkov 2020-07-30 18:43:47 +03:00 • committed by Jens Axboe

parent 81b68a5ca0

commit b2bd1cf99f

1 changed files with 1 additions and 2 deletions

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fs/io_uring.c

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