HAVE_ARCH_UNMAPPED_AREA   23 include/asm-frv/uaccess.h #define HAVE_ARCH_UNMAPPED_AREA	/* we decide where to put mmaps */
HAVE_ARCH_UNMAPPED_AREA  500 include/asm-parisc/pgtable.h #define HAVE_ARCH_UNMAPPED_AREA
HAVE_ARCH_UNMAPPED_AREA  266 include/asm-x86/pgtable_64.h #define HAVE_ARCH_UNMAPPED_AREA