io_uring: return cancelation status from poll/timeout/files handlers
commit 76e1b642 upstream. Return whether we found and canceled requests or not. This is in preparation for using this information, no functional changes in this patch. Reviewed-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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f34e674f
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