VMAP_BLOCK_SIZE  1435 mm/vmalloc.c   	addr -= VMALLOC_START & ~(VMAP_BLOCK_SIZE-1);
VMAP_BLOCK_SIZE  1436 mm/vmalloc.c   	addr /= VMAP_BLOCK_SIZE;
VMAP_BLOCK_SIZE  1473 mm/vmalloc.c   	va = alloc_vmap_area(VMAP_BLOCK_SIZE, VMAP_BLOCK_SIZE,
VMAP_BLOCK_SIZE  1640 mm/vmalloc.c   	offset = (unsigned long)addr & (VMAP_BLOCK_SIZE - 1);