mm-use-vm_unmapped_area-in-hugetlbfs-on-i386-architecture-fix

mm-use-vm_unmapped_area-in-hugetlbfs-on-i386-architecture-fix

fix build

arch/x86/mm/hugetlbpage.c: In function 'hugetlb_get_unmapped_area_topdown':
arch/x86/mm/hugetlbpage.c:299: error: 'mm' undeclared (first use in this function)
arch/x86/mm/hugetlbpage.c:299: error: (Each undeclared identifier is reported only once
arch/x86/mm/hugetlbpage.c:299: error: for each function it appears in.)

Cc: "David S. Miller" <davem@davemloft.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Michel Lespinasse <walken@google.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>