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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2012-03-22 03:33:58 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-22 04:54:57 +0400
commite873c49fbfdd595481976b915850e682441bcbec (patch)
tree87ad5d125563d1eb6418e1f7b5a094fab6098108 /include/linux/kernel-page-flags.h
parent025c5b2451e42c9e8dfdecd6dc84956ce8f321b5 (diff)
downloadlinux-e873c49fbfdd595481976b915850e682441bcbec.tar.xz
pagemap: export KPF_THP
This flag shows that a given page is a subpage of a transparent hugepage. It helps us debug and test the kernel by showing physical address of thp. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/kernel-page-flags.h')
-rw-r--r--include/linux/kernel-page-flags.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/kernel-page-flags.h b/include/linux/kernel-page-flags.h
index bd92a89f4b0a..26a65711676f 100644
--- a/include/linux/kernel-page-flags.h
+++ b/include/linux/kernel-page-flags.h
@@ -30,6 +30,7 @@
#define KPF_NOPAGE 20
#define KPF_KSM 21
+#define KPF_THP 22
/* kernel hacking assistances
* WARNING: subject to change, never rely on them!