linux-kernel - Re: [PATCH RESEND 1/2] xen/blkback: safely unmap purge persistent grants

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Message-ID: <551467E0.40502@fb.com>
Date:	Thu, 26 Mar 2015 14:11:12 -0600
From:	Jens Axboe <axboe@...com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Roger Pau Monné 
	<roger.pau@...rix.com>
CC:	Bob Liu <bob.liu@...cle.com>, <xen-devel@...ts.xenproject.org>,
	<boris.ostrovsky@...cle.com>, <jennifer.herbert@...rix.com>,
	<david.vrabel@...rix.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RESEND 1/2] xen/blkback: safely unmap purge persistent
 grants

On 03/26/2015 01:01 PM, Konrad Rzeszutek Wilk wrote:
> On Thu, Mar 26, 2015 at 04:23:27PM +0100, Roger Pau Monné wrote:
>> El 26/03/15 a les 13.16, Bob Liu ha escrit:
>>> Commit c43cf3ea8385 ("xen-blkback: safely unmap grants in case they are still
>>> in use") use gnttab_unmap_refs_async() to wait until the mapped pages are no
>>> longer in use before unmapping them, but that commit missed the persistent case.
>>> Purge persistent pages can't be unmapped either unless no longer in use.
>>>
>>> Signed-off-by: Bob Liu <bob.liu@...cle.com>
>>
>> AFAICT since this is basically the same patch as what I've sent:
>>
>> Acked-by: Roger Pau Monné <roger.pau@...rix.com>
>>
> 
> Hey Jens,
> 
> These patches are on top of patches that add this framework in the Xen tree.
> Would you be OK with this patch (and the other which I will CC shortly)
> to go through the Xen tree?

Sure that's fine.

-- 
Jens Axboe

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