From 1cbf29da3628b661379acba7b08a07ef1e5da3b5 Mon Sep 17 00:00:00 2001 From: Petr Tesarik <ptesarik@suse.cz> 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 <ptesarik@suse.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dave Young <dyoung@redhat.com> Cc: Xunlei Pang <xlpang@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Hari Bathini <hbathini@linux.vnet.ibm.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: "Marc-Andr Lureau" <marcandre.lureau@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- 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); -- GitLab