From 6e7248adf8f7adb5e36ec1e91efcc85a83bf8aeb Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu, 6 Apr 2023 14:20:09 +0100
Subject: io_uring: refactor io_cqring_wake()

Instead of smp_mb() + __io_cqring_wake() in __io_cq_unlock_post_flush()
use equivalent io_cqring_wake(). With that we can clean it up further
and remove __io_cqring_wake().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/662ee5d898168ac206be06038525e97b64072a46.1680782017.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 io_uring/io_uring.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'io_uring/io_uring.c')

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index fb7215b543cd..d4ac62de2113 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -640,10 +640,8 @@ static inline void __io_cq_unlock_post_flush(struct io_ring_ctx *ctx)
 	 * it will re-check the wakeup conditions once we return we can safely
 	 * skip waking it up.
 	 */
-	if (!(ctx->flags & IORING_SETUP_DEFER_TASKRUN)) {
-		smp_mb();
-		__io_cqring_wake(ctx);
-	}
+	if (!(ctx->flags & IORING_SETUP_DEFER_TASKRUN))
+		io_cqring_wake(ctx);
 }
 
 void io_cq_unlock_post(struct io_ring_ctx *ctx)
-- 
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