From 1cbf29da3628b661379acba7b08a07ef1e5da3b5 Mon Sep 17 00:00:00 2001 From: Petr Tesarik Date: Fri, 13 Apr 2018 15:35:34 -0700 Subject: [PATCH] kexec: export PG_swapbacked to VMCOREINFO Since commit 6326fec1122c ("mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked"), PG_swapcache is an alias for PG_owner_priv_1, which may be also used for other purposes. To know whether the bit indeed has the PG_swapcache meaning, it is necessary to check PG_swapbacked, hence this bit must be exported. Link: http://lkml.kernel.org/r/20180410161345.142e142d@ezekiel.suse.cz Signed-off-by: Petr Tesarik Reviewed-by: Andrew Morton Cc: Dave Young Cc: Xunlei Pang Cc: Baoquan He Cc: Hari Bathini Cc: "Kirill A. Shutemov" Cc: "Marc-Andr Lureau" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/crash_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/crash_core.c b/kernel/crash_core.c index a93590cdd9e1..f7674d676889 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -454,6 +454,7 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_NUMBER(PG_lru); VMCOREINFO_NUMBER(PG_private); VMCOREINFO_NUMBER(PG_swapcache); + VMCOREINFO_NUMBER(PG_swapbacked); VMCOREINFO_NUMBER(PG_slab); #ifdef CONFIG_MEMORY_FAILURE VMCOREINFO_NUMBER(PG_hwpoison);