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io_uring: fix NULL mm in io_poll_task_func()

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io_poll_task_func() hand-coded link submission forgetting to set
TASK_RUNNING, acquire mm, etc. Call existing helper for that,
i.e. __io_req_task_submit().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-06-30 15:20:41 +03:00 committed by Jens Axboe
parent cf2f54255d
commit ea1164e574
1 changed files with 2 additions and 7 deletions
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9
fs/io_uring.c
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@ -4518,13 +4518,8 @@ static void io_poll_task_func(struct callback_head *cb)
struct io_kiocb *nxt = NULL;
io_poll_task_handler(req, &nxt);
if (nxt) {
struct io_ring_ctx *ctx = nxt->ctx;
mutex_lock(&ctx->uring_lock);
__io_queue_sqe(nxt, NULL, NULL);
mutex_unlock(&ctx->uring_lock);
}
if (nxt)
__io_req_task_submit(nxt);
}
static int io_poll_double_wake(struct wait_queue_entry *wait, unsigned mode,