From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: [PATCH 12/14] xen-blkback: safely unmap grants in case they are still in use Date: Mon, 26 Jan 2015 10:34:15 -0700 Message-ID: <54C67A97.2030604@kernel.dk> References: <1421682692-20628-1-git-send-email-david.vrabel@citrix.com> <1421682692-20628-13-git-send-email-david.vrabel@citrix.com> <54C65708.8060304@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1YFnYK-00022q-NJ for xen-devel@lists.xenproject.org; Mon, 26 Jan 2015 17:34:20 +0000 Received: by mail-pa0-f50.google.com with SMTP id rd3so12950932pab.9 for ; Mon, 26 Jan 2015 09:34:18 -0800 (PST) In-Reply-To: <54C65708.8060304@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: David Vrabel , xen-devel Cc: Boris Ostrovsky , Jenny Herbert List-Id: xen-devel@lists.xenproject.org On 01/26/2015 08:02 AM, David Vrabel wrote: > On 19/01/15 15:51, David Vrabel wrote: >> From: Jenny Herbert >> >> Use gnttab_unmap_refs_async() to wait until the mapped pages are no >> longer in use before unmapping them. >> >> This allows blkback to use network storage which may retain refs to >> pages in queued skbs after the block I/O has completed. > > Hi Jens, > > This xen-blkback change depends on several Xen changes and it would be > easiest if this went via the Xen tree. Are you ok with this? Yeah, that's fine. You can add my acked-by. -- Jens Axboe