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Commit 9e4c15a3 authored by Stefan Bühler's avatar Stefan Bühler Committed by Jens Axboe
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io_uring: remove unnecessary barrier after updating SQ head 



There is no operation afterwards to order with.

Signed-off-by: default avatarStefan Bühler <source@stbuehler.de>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 115e12e5

fs/io_uring.c

+0 −6
Original line number Diff line number Diff line
@@ -1798,12 +1798,6 @@ static void io_commit_sqring(struct io_ring_ctx *ctx) 
		 * write new data to them.

		 */

		smp_store_release(&ring->r.head, ctx->cached_sq_head);



		/*

		 * write side barrier of head update, app has read side. See

		 * comment at the top of this file

		 */

		smp_wmb();

	}

}