[PATCH] ARM: Fix compile after delay page freeing patch

[Tony Lindgren]

Commit 06824ba824b3e9f2fedb38bee79af0643198ed7f
(ARM: tlb: delay page freeing for SMP and ARMv7 CPUs) causes
the following compile error for at least omap1_defconfig:

In file included from arch/arm/mm/init.c:27:
arch/arm/include/asm/tlb.h: In function 'tlb_flush_mmu':
arch/arm/include/asm/tlb.h:101: error: implicit declaration of function 'release_pages'
arch/arm/include/asm/tlb.h: In function 'tlb_remove_page':
arch/arm/include/asm/tlb.h:165: error: implicit declaration of function 'page_cache_release'

Fix this by including pagemap.h.

Signed-off-by: Tony Lindgren <tony at atomide.com>

--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -19,6 +19,7 @@
 #include <linux/gfp.h>
 #include <linux/memblock.h>
 #include <linux/sort.h>
+#include <linux/pagemap.h>
 
 #include <asm/mach-types.h>
 #include <asm/sections.h>