Messages in this thread Patch in this message | | | From | Jacob Wen <> | Subject | [PATCH] xen/netfront: remove unnecessary wmb | Date | Fri, 9 Nov 2018 14:53:59 +0800 |
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RING_PUSH_REQUESTS_AND_CHECK_NOTIFY is already able to make sure backend sees requests before req_prod is updated.
Signed-off-by: Jacob Wen <jian.w.wen@oracle.com> --- drivers/net/xen-netfront.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index f17f602e6171..a8303afa15f1 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -337,8 +337,6 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue) return; } - wmb(); /* barrier so backend seens requests */ - RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&queue->rx, notify); if (notify) notify_remote_via_irq(queue->rx_irq); -- 2.17.1
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