From: Pavel Begunkov <asml.silence@gmail.com>
Date: Tue, 17 Dec 2019 17:57:05 +0000 (+0300)
Subject: io_uring: make HARDLINK imply LINK
X-Git-Tag: v5.10.7~3442^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ffbb8d6b76910d4f3a2bafeaf68c419011e98d05;p=platform%2Fkernel%2Flinux-rpi.git

io_uring: make HARDLINK imply LINK

The rules are as follows, if IOSQE_IO_HARDLINK is specified, then it's a
link and there is no need to set IOSQE_IO_LINK separately, though it
could be there. Add proper check and ensure that IOSQE_IO_HARDLINK
implies IOSQE_IO_LINK.

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

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 67e1758bc937..b476bd304045 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3698,7 +3698,7 @@ static int io_submit_sqes(struct io_ring_ctx *ctx, unsigned int nr,
 		 * If previous wasn't linked and we have a linked command,
 		 * that's the end of the chain. Submit the previous link.
 		 */
-		if (!(sqe_flags & IOSQE_IO_LINK) && link) {
+		if (!(sqe_flags & (IOSQE_IO_LINK|IOSQE_IO_HARDLINK)) && link) {
 			io_queue_link_head(link);
 			link = NULL;
 		}