Commit dccc587f authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: remove obsolete @mm_fault 



If io_submit_sqes() can't grab an mm, it fails and exits right away.
There is no need to track the fact of the failure. Remove @mm_fault.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 5b8b9d0c

fs/io_uring.c

+1 −3
Original line number Diff line number Diff line
@@ -5818,7 +5818,6 @@ static int io_submit_sqes(struct io_ring_ctx *ctx, unsigned int nr, 
	struct io_submit_state state, *statep = NULL;

	struct io_kiocb *link = NULL;

	int i, submitted = 0;

	bool mm_fault = false;



	/* if we have a backlog and couldn't flush it all, return BUSY */

	if (test_bit(0, &ctx->sq_check_overflow)) {
@@ -5872,8 +5871,7 @@ fail_req: 
		}



		if (io_op_defs[req->opcode].needs_mm && !*mm) {

			mm_fault = mm_fault || !mmget_not_zero(ctx->sqo_mm);

			if (unlikely(mm_fault)) {

			if (unlikely(!mmget_not_zero(ctx->sqo_mm))) {

				err = -EFAULT;

				goto fail_req;

			}

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