Re: [Xen-devel] [PATCH RFC 6/6] PM / Hibernate: exclude all PageOffline() pages

[Pavel Machek <pavel@xxxxxx>]

On Wed 2018-11-14 22:17:04, David Hildenbrand wrote:
> The content of pages that are marked PG_offline is not of interest
> (e.g. inflated by a balloon driver), let's skip these pages.
> 
> Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>

Acked-by: Pavel Machek <pavel@xxxxxx>

> diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
> index b0308a2c6000..01db1d13481a 100644
> --- a/kernel/power/snapshot.c
> +++ b/kernel/power/snapshot.c
> @@ -1222,7 +1222,7 @@ static struct page *saveable_highmem_page(struct zone 
> *zone, unsigned long pfn)
>       BUG_ON(!PageHighMem(page));
>  
>       if (swsusp_page_is_forbidden(page) ||  swsusp_page_is_free(page) ||
> -         PageReserved(page))
> +         PageReserved(page) || PageOffline(page))
>               return NULL;
>  
>       if (page_is_guard(page))
> @@ -1286,6 +1286,9 @@ static struct page *saveable_page(struct zone *zone, 
> unsigned long pfn)
>       if (swsusp_page_is_forbidden(page) || swsusp_page_is_free(page))
>               return NULL;
>  
> +     if (PageOffline(page))
> +             return NULL;
> +
>       if (PageReserved(page)
>           && (!kernel_page_present(page) || pfn_is_nosave(pfn)))
>               return NULL;

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) 
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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