PG_reserved pages should never be touched by enybody except their owner.
Let's allow dumping tools to skip these pages.

Cc: Andrew Morton <[email protected]>
Cc: Dave Young <[email protected]>
Cc: Baoquan He <[email protected]>
Cc: Hari Bathini <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: David Hildenbrand <[email protected]>
---
 kernel/crash_core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index b66aced5e8c2..ab216accf96a 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -451,6 +451,7 @@ static int __init crash_save_vmcoreinfo_init(void)
        log_buf_vmcoreinfo_setup();
        VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES);
        VMCOREINFO_NUMBER(NR_FREE_PAGES);
+       VMCOREINFO_NUMBER(PG_reserved);
        VMCOREINFO_NUMBER(PG_lru);
        VMCOREINFO_NUMBER(PG_private);
        VMCOREINFO_NUMBER(PG_swapcache);
-- 
2.17.1

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