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SubjectRe: [PATCH 13/18] Hibernate: Avoid S4 sign key data included in snapshot image
On Thu 2013-08-22 19:01:52, Lee, Chun-Yi wrote:
> This patch add swsusp_page_is_sign_key() method to hibernate_key.c and
> check the page is S4 sign key data when collect saveable page in
> snapshot.c to avoid sign key data included in snapshot image.
>
> Reviewed-by: Jiri Kosina <jkosina@suse.cz>
> Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
> ---
> kernel/power/snapshot.c | 6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
> index 72e2911..9e4c94b 100644
> --- a/kernel/power/snapshot.c
> +++ b/kernel/power/snapshot.c
> @@ -860,6 +860,9 @@ static struct page *saveable_highmem_page(struct zone *zone, unsigned long pfn)
>
> BUG_ON(!PageHighMem(page));
>
> + if (swsusp_page_is_sign_key(page))
> + return NULL;
> +
> if (swsusp_page_is_forbidden(page) || swsusp_page_is_free(page) ||
> PageReserved(page))
> return NULL;

Just do set_page_forbidden() on your page?
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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