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

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Message-ID: <20150326190101.GB31979@l.oracle.com>
Date:	Thu, 26 Mar 2015 15:01:01 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Roger Pau Monné <roger.pau@...rix.com>,
	axboe@...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 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?

Thanks. 
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