Commit cf2f5425 authored Jun 30, 2020 by Pavel Begunkov Committed by Jens Axboe Jun 30, 2020

io_uring: don't fail iopoll requeue without ->mm

Actually, io_iopoll_queue() may have NULL ->mm, that's if SQ thread
didn't grabbed mm before doing iopoll. Don't fail reqs there, as after
recent changes it won't be punted directly but rather through task_work.

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

parent ab0b6451

fs/io_uring.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -1902,9 +1902,7 @@ static void io_iopoll_queue(struct list_head *again)
		do {
		req = list_first_entry(again, struct io_kiocb, list);
		list_del(&req->list);

		/* should have ->mm unless io_uring is dying, kill reqs then */
		if (unlikely(!current->mm) \|\| !io_rw_reissue(req, -EAGAIN))
		if (!io_rw_reissue(req, -EAGAIN))
		io_complete_rw_common(&req->rw.kiocb, -EAGAIN, NULL);
		} while (!list_empty(again));
		}

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