alloc_vmap_area  1473 mm/vmalloc.c   	va = alloc_vmap_area(VMAP_BLOCK_SIZE, VMAP_BLOCK_SIZE,
alloc_vmap_area  1791 mm/vmalloc.c   		va = alloc_vmap_area(size, PAGE_SIZE,
alloc_vmap_area  2064 mm/vmalloc.c   	va = alloc_vmap_area(size, align, start, end, node, gfp_mask);