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io_uring: remove unnecessary barrier after updating SQ head

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Signed-off-by: Stefan Bühler <source@stbuehler.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Stefan Bühler 2019-04-24 23:54:19 +02:00 committed by Jens Axboe
parent 115e12e58d
commit 9e4c15a393
1 changed files with 0 additions and 6 deletions
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6
fs/io_uring.c
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@ -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();
}
}