io_uring: fix overflowed reqs cancellation

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Overflowed requests in io_uring_cancel_files() should be shed only of
inflight and overflowed refs. All other left references are owned by
someone else.

If refcount_sub_and_test() fails, it will go further and put put extra
ref, don't do that. Also, don't need to do io_wq_cancel_work()
for overflowed reqs, they will be let go shortly anyway.

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

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This commit is contained in:

Pavel Begunkov 2020-05-30 14:19:15 +03:00 • committed by Jens Axboe

parent bfe68a2219

commit 7b53d59859

1 changed files with 3 additions and 2 deletions

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fs/io_uring.c

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