Let's export PG_offline via PAGE_OFFLINE_MAPCOUNT_VALUE, so makedumpfile can directly skip pages that are logically offline and the content therefore stale. Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Dave Young <dyoung@xxxxxxxxxx> Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> Cc: Baoquan He <bhe@xxxxxxxxxx> Cc: Omar Sandoval <osandov@xxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxx> Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> --- kernel/crash_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/crash_core.c b/kernel/crash_core.c index 933cb3e45b98..093c9f917ed0 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -464,6 +464,8 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE); #ifdef CONFIG_HUGETLB_PAGE VMCOREINFO_NUMBER(HUGETLB_PAGE_DTOR); +#define PAGE_OFFLINE_MAPCOUNT_VALUE (~PG_offline) + VMCOREINFO_NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE); #endif arch_crash_save_vmcoreinfo(); -- 2.17.2
