From 151eede23ef0b7b7f30bd32a5f802336606d9b19 Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Fri, 4 Oct 2019 17:01:08 +0300
Subject: [PATCH] io_uring: fix reversed nonblock flag for link submission

commit bf7ec93c644cb0064ba7d2fc40d4841c5ba382ab upstream.

io_queue_link_head() accepts @force_nonblock flag, but io_ring_submit()
passes something opposite.

Fixes: c576666863b78 ("io_uring: optimize submit_and_wait API")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
---
 fs/io_uring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 145a920a0f7c..c3fa848e5e9f 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2760,7 +2760,7 @@ static int io_ring_submit(struct io_ring_ctx *ctx, unsigned int to_submit,
 
 	if (link)
 		io_queue_link_head(ctx, link, &link->submit, shadow_req,
-					block_for_last);
+					!block_for_last);
 	if (statep)
 		io_submit_state_end(statep);
 
-- 
GitLab