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Message-ID: <52D75F13.2060504@redhat.com> Date: Thu, 16 Jan 2014 12:24:51 +0800 From: Jason Wang <jasowang@...hat.com> To: David Miller <davem@...emloft.net> CC: rusty@...tcorp.com.au, mst@...hat.com, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH net-next RFC] virtio-net: drop rq->max and rq->num On 01/16/2014 08:46 AM, David Miller wrote: > From: Rusty Russell<rusty@...tcorp.com.au> > Date: Thu, 16 Jan 2014 10:25:26 +1030 > >> Rusty Russell<rusty@...tcorp.com.au> writes: >>> Jason Wang<jasowang@...hat.com> writes: >>>> It looks like there's no need for those two fields: >>>> >>>> - Unless there's a failure for the first refill try, rq->max should be always >>>> equal to the vring size. >>>> - rq->num is only used to determine the condition that we need to do the refill, >>>> we could check vq->num_free instead. >>>> - rq->num was required to be increased or decreased explicitly after each >>>> get/put which results a bad API. >>>> >>>> So this patch removes them both to make the code simpler. >>> Nice. These fields date from when the vq struct was opaque. >>> >>> Applied, >>> Rusty. >> Oops, this doesn't require any core virtio changes, so it's for DaveM: >> >> Acked-by: Rusty Russell<rusty@...tcorp.com.au> > Jason please repost this with Rusty's ACK, thanks. Sure, will repost. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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