linux-kernel - Re: [PATCH v1 4/8] xen/balloon: mark inflated pages PG

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Date:   Mon, 19 Nov 2018 13:22:22 +0100
From:   Juergen Gross <jgross@...e.com>
To:     David Hildenbrand <david@...hat.com>, linux-mm@...ck.org
Cc:     linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        devel@...uxdriverproject.org, linux-fsdevel@...r.kernel.org,
        linux-pm@...r.kernel.org, xen-devel@...ts.xenproject.org,
        kexec-ml <kexec@...ts.infradead.org>, pv-drivers@...are.com,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>,
        "Michael S. Tsirkin" <mst@...hat.com>
Subject: Re: [PATCH v1 4/8] xen/balloon: mark inflated pages PG_offline

On 19/11/2018 11:16, David Hildenbrand wrote:
> Mark inflated and never onlined pages PG_offline, to tell the world that
> the content is stale and should not be dumped.
> 
> Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> Cc: Juergen Gross <jgross@...e.com>
> Cc: Stefano Stabellini <sstabellini@...nel.org>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Matthew Wilcox <willy@...radead.org>
> Cc: Michal Hocko <mhocko@...e.com>
> Cc: "Michael S. Tsirkin" <mst@...hat.com>
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  drivers/xen/balloon.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c
> index 12148289debd..14dd6b814db3 100644
> --- a/drivers/xen/balloon.c
> +++ b/drivers/xen/balloon.c
> @@ -425,6 +425,7 @@ static int xen_bring_pgs_online(struct page *pg, unsigned int order)
>  	for (i = 0; i < size; i++) {
>  		p = pfn_to_page(start_pfn + i);
>  		__online_page_set_limits(p);
> +		__SetPageOffline(p);
>  		__balloon_append(p);
>  	}

This seems not to be based on current master. Could you please tell
against which tree this should be reviewed?


Juergen