netdev - virtio-net: why not always to set avail->flags to VRING_AVAIL_F_NO

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Message-ID: <556E9F87.7030202@huawei.com>
Date:	Wed, 3 Jun 2015 14:32:39 +0800
From:	Linhaifeng <haifeng.lin@...wei.com>
To:	<netdev@...r.kernel.org>
CC:	<virtualization@...ts.linux-foundation.org>,
	"rusty@...tcorp.com.au >> Rusty Russell" <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...hat.com>
Subject: virtio-net: why not always to set avail->flags to VRING_AVAIL_F_NO_INTERRUPT

Hi,

I'm a newbie and have a question about vring_new_virtqueue function.

Why we set avail->flags to VRING_AVAIL_F_NO_INTERRUPT when no callbacks?
I think we should set avail->flags to VRING_AVAIL_F_NO_INTERRUPT even if no callbacks.

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