Let's use pfn_to_online_page() instead of pfn_to_page() when checking
for saveable pages to not save/restore offline memory sections.
Cc: "Rafael J. Wysocki" <r...@rjwysocki.net>
Cc: Pavel Machek <pa...@ucw.cz>
Cc: Len Brown <len.br...@intel.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Matthew Wilcox <wi...@infradead.org>
Cc: Michal Hocko <mho...@suse.com>
Cc: "Michael S. Tsirkin" <m...@redhat.com>
Suggested-by: Michal Hocko <mho...@kernel.org>
Signed-off-by: David Hildenbrand <da...@redhat.com>
---
kernel/power/snapshot.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 640b2034edd6..87e6dd57819f 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1215,8 +1215,8 @@ static struct page *saveable_highmem_page(struct zone
*zone, unsigned long pfn)
if (!pfn_valid(pfn))
return NULL;
- page = pfn_to_page(pfn);
- if (page_zone(page) != zone)
+ page = pfn_to_online_page(pfn);
+ if (!page || page_zone(page) != zone)
return NULL;
BUG_ON(!PageHighMem(page));
@@ -1277,8 +1277,8 @@ static struct page *saveable_page(struct zone *zone,
unsigned long pfn)
if (!pfn_valid(pfn))
return NULL;
- page = pfn_to_page(pfn);
- if (page_zone(page) != zone)
+ page = pfn_to_online_page(pfn);
+ if (!page || page_zone(page) != zone)
return NULL;
BUG_ON(PageHighMem(page));
--
2.17.2
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