From 02a8efeda894d3541c7143ed818b25b299504190 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 4 Jun 2014 16:06:59 -0700
Subject: [PATCH] include/linux/mmdebug.h: add VM_WARN_ON() and
 VM_WARN_ON_ONCE()

WARN_ON() and WARN_ON_ONCE(), dependent on CONFIG_DEBUG_VM

Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 include/linux/mmdebug.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index 2d57efa64cc1..a3499d7b0e8a 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -11,9 +11,13 @@ extern void dump_page_badflags(struct page *page, const char *reason,
 #define VM_BUG_ON(cond) BUG_ON(cond)
 #define VM_BUG_ON_PAGE(cond, page) \
 	do { if (unlikely(cond)) { dump_page(page, NULL); BUG(); } } while (0)
+#define VM_WARN_ON(cond) WARN_ON(cond)
+#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
 #else
 #define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
 #define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
+#define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
+#define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
 #endif
 
 #ifdef CONFIG_DEBUG_VIRTUAL