linux-kernel - Re: [RFC PATCH V2 4/5] vhost: introduce helpers to get the size of metadata area

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Message-ID: <f61076eb-93ec-b924-2ad9-96af0df45830@redhat.com>
Date:   Thu, 7 Mar 2019 10:40:20 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Christophe de Dinechin <christophe.de.dinechin@...il.com>
Cc:     mst@...hat.com, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, peterx@...hat.com,
        linux-mm@...ck.org, aarcange@...hat.com
Subject: Re: [RFC PATCH V2 4/5] vhost: introduce helpers to get the size of
 metadata area


On 2019/3/6 下午6:56, Christophe de Dinechin wrote:
>> On 6 Mar 2019, at 08:18, Jason Wang<jasowang@...hat.com>  wrote:
>>
>> Signed-off-by: Jason Wang<jasowang@...hat.com>
>> ---
>> drivers/vhost/vhost.c | 46 ++++++++++++++++++++++++++++------------------
>> 1 file changed, 28 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
>> index 2025543..1015464 100644
>> --- a/drivers/vhost/vhost.c
>> +++ b/drivers/vhost/vhost.c
>> @@ -413,6 +413,27 @@ static void vhost_dev_free_iovecs(struct vhost_dev *dev)
>> 		vhost_vq_free_iovecs(dev->vqs[i]);
>> }
>>
>> +static size_t vhost_get_avail_size(struct vhost_virtqueue *vq, int num)
> Nit: Any reason not to make `num` unsigned or size_t?
>

Let me use unsigned int to match the definition of vq->num.

Thanks