The patch titled
Subject: PM/Hibernate: exclude all PageOffline() pages
has been added to the -mm tree. Its filename is
pm-hibernate-exclude-all-pageoffline-pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/pm-hibernate-exclude-all-pageoffline-pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/pm-hibernate-exclude-all-pageoffline-pages.patch
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------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: PM/Hibernate: exclude all PageOffline() pages
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.
Link: http://lkml.kernel.org/r/20181119101616.8901-9-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/kernel/power/snapshot.c~pm-hibernate-exclude-all-pageoffline-pages
+++ a/kernel/power/snapshot.c
@@ -1222,7 +1222,7 @@ static struct page *saveable_highmem_pag
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
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;
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
mm-balloon-update-comment-about-isolation-migration-compaction.patch
mm-convert-pg_balloon-to-pg_offline.patch
kexec-export-pg_offline-to-vmcoreinfo.patch
xen-balloon-mark-inflated-pages-pg_offline.patch
hv_balloon-mark-inflated-pages-pg_offline.patch
vmw_balloon-mark-inflated-pages-pg_offline.patch
pm-hibernate-use-pfn_to_online_page.patch
pm-hibernate-exclude-all-pageoffline-pages.patch
