linux-kernel - [PATCH 3.16.y-ckt 094/128] include/linux/mmdebug.h: should include linux/bug.h

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Message-Id: <1453672883-2708-95-git-send-email-luis.henriques@canonical.com>
Date:	Sun, 24 Jan 2016 22:00:49 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	James Morse <james.morse@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 094/128] include/linux/mmdebug.h: should include linux/bug.h

3.16.7-ckt23 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: James Morse <james.morse@....com>

commit 1d5cda4076d930d6d52088ed2c7753f7c564cbd7 upstream.

mmdebug.h uses BUILD_BUG_ON_INVALID(), assuming someone else included
linux/bug.h.  Include it ourselves.

This saves build-failures such as:

  arch/arm64/include/asm/pgtable.h: In function 'set_pte_at':
  arch/arm64/include/asm/pgtable.h:281:3: error: implicit declaration of function 'BUILD_BUG_ON_INVALID' [-Werror=implicit-function-declaration]
   VM_WARN_ONCE(!pte_young(pte),

Fixes: 02602a18c32d7 ("bug: completely remove code generated by disabled VM_BUG_ON()")
Signed-off-by: James Morse <james.morse@....com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 include/linux/mmdebug.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index edd82a105220..e23860eb29c1 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -1,6 +1,7 @@
 #ifndef LINUX_MM_DEBUG_H
 #define LINUX_MM_DEBUG_H 1
 
+#include <linux/bug.h>
 #include <linux/stringify.h>
 
 struct page;