linux-kernel - [PATCH] mempool: add missing include

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Message-ID: <3302342.cNyRUGN06P@wuerfel>
Date:	Thu, 09 Apr 2015 11:46:55 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Rientjes <rientjes@...gle.com>,
	Andrey Ryabinin <a.ryabinin@...sung.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] mempool: add missing include

This is a fix^3 for the mempool poisoning patch, which introduces
a compile-time error on some ARM randconfig builds:

mm/mempool.c: In function 'check_element':
mm/mempool.c:65:16: error: implicit declaration of function 'kmap_atomic' [-Werror=implicit-function-declaration]
   void *addr = kmap_atomic((struct page *)element);

The problem is clearly the missing declaration, and including
linux/highmem.h fixes it.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: a3db5a8463b0db ("mm, mempool: poison elements backed by page allocator fix fix")

diff --git a/mm/mempool.c b/mm/mempool.c
index 05ad55e61264..5e7c4a871391 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -12,6 +12,7 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/kasan.h>
+#include <linux/highmem.h>
 #include <linux/kmemleak.h>
 #include <linux/export.h>
 #include <linux/mempool.h>

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