$ grep -r HAVE_ARCH_UNMAPPED_AREA * arch/alpha/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA arch/arm/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA arch/frv/include/asm/uaccess.h:#define HAVE_ARCH_UNMAPPED_AREA /* we decide where to put mmaps */ arch/ia64/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA arch/mips/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA arch/parisc/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA arch/powerpc/include/asm/pgtable-ppc64.h:#define HAVE_ARCH_UNMAPPED_AREA arch/powerpc/include/asm/pgtable-ppc64.h:#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN arch/sh/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA arch/sh/include/asm/pgtable.h:#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN arch/sparc/include/asm/pgtable_32.h:#define HAVE_ARCH_UNMAPPED_AREA arch/sparc/include/asm/pgtable_64.h:#define HAVE_ARCH_UNMAPPED_AREA arch/sparc/include/asm/pgtable_64.h:#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN arch/x86/include/asm/pgtable_64.h:#define HAVE_ARCH_UNMAPPED_AREA arch/x86/include/asm/pgtable_64.h:#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN mm/mmap.c:#ifndef HAVE_ARCH_UNMAPPED_AREA mm/mmap.c:#ifndef HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
なし