From dccc587f6c07ccc734588226fdf62f685558e89f Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Sun, 12 Apr 2020 02:05:01 +0300 Subject: [PATCH] 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: Pavel Begunkov Signed-off-by: Jens Axboe --- fs/io_uring.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index 5190bfb..8153247 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -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; } -- 2.7.4