linux-kernel - Re: [PATCH net-next] hyperv: Increase the buffer length for netvsc_channel

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Message-Id: <20140804.150842.507300261765977637.davem@davemloft.net>
Date:	Mon, 04 Aug 2014 15:08:42 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	haiyangz@...rosoft.com
Cc:	netdev@...r.kernel.org, kys@...rosoft.com, olaf@...fle.de,
	jasowang@...hat.com, linux-kernel@...r.kernel.org,
	driverdev-devel@...uxdriverproject.org
Subject: Re: [PATCH net-next] hyperv: Increase the buffer length for
 netvsc_channel_cb()

From: Haiyang Zhang <haiyangz@...rosoft.com>
Date: Mon,  4 Aug 2014 12:33:45 -0700

> When the buffer is too small for a packet from VMBus, a bigger buffer will be
> allocated in netvsc_channel_cb() and retry reading the packet from VMBus.
> Increasing this buffer size will reduce the retry overhead.
> 
> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> Reviewed-by: Dexuan Cui <decui@...rosoft.com>

Now netvsc_device is significantly larger than a page, you should probably
therefore allocate netvsc_device->cb_buffer indirectly instead of inlining
it into the structure.
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