io_uring: reinforce cancel on flush during exit

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[ Upstream commit 3a7efd1ad2 ]

What 84965ff8a8 ("io_uring: if we see flush on exit, cancel related tasks")
really wants is to cancel all relevant REQ_F_INFLIGHT requests reliably.
That can be achieved by io_uring_cancel_files(), but we'll miss it
calling io_uring_cancel_task_requests(files=NULL) from io_uring_flush(),
because it will go through __io_uring_cancel_task_requests().

Just always call io_uring_cancel_files() during cancel, it's good enough
for now.

Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Pavel Begunkov 2021-02-09 04:47:49 +00:00 • committed by Greg Kroah-Hartman

parent aa435155d3

commit 88dbd085a5

1 changed files with 1 additions and 2 deletions

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fs/io_uring.c

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