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 <[email protected]> Cc: Dave Young <[email protected]> Cc: "Kirill A. Shutemov" <[email protected]> Cc: Baoquan He <[email protected]> Cc: Omar Sandoval <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Michal Hocko <[email protected]> Cc: "Michael S. Tsirkin" <[email protected]> Signed-off-by: David Hildenbrand <[email protected]> --- 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 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
