diff --git a/include/linux/a.out.h b/include/linux/a.out.h
index af8a1df..f913cc3 100644
--- a/include/linux/a.out.h
+++ b/include/linux/a.out.h
@@ -138,7 +138,7 @@
 #endif
 #endif
 
-#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
+#define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)
 
 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
 
diff --git a/kernel/resource.c b/kernel/resource.c
index 52f696f..26967e0 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -263,7 +263,7 @@
 			new->start = min;
 		if (new->end > max)
 			new->end = max;
-		new->start = (new->start + align - 1) & ~(align - 1);
+		new->start = ALIGN(new->start, align);
 		if (alignf)
 			alignf(alignf_data, new, size, align);
 		if (new->start < new->end && new->end - new->start >= size - 1) {
diff --git a/lib/bitmap.c b/lib/bitmap.c
index d1388a5..fb9371f 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -289,7 +289,6 @@
 
 #define CHUNKSZ				32
 #define nbits_to_hold_value(val)	fls(val)
-#define roundup_power2(val,modulus)	(((val) + (modulus) - 1) & ~((modulus) - 1))
 #define unhex(c)			(isdigit(c) ? (c - '0') : (toupper(c) - 'A' + 10))
 #define BASEDEC 10		/* fancier cpuset lists input in decimal */
 
@@ -316,7 +315,7 @@
 	if (chunksz == 0)
 		chunksz = CHUNKSZ;
 
-	i = roundup_power2(nmaskbits, CHUNKSZ) - CHUNKSZ;
+	i = ALIGN(nmaskbits, CHUNKSZ) - CHUNKSZ;
 	for (; i >= 0; i -= CHUNKSZ) {
 		chunkmask = ((1ULL << chunksz) - 1);
 		word = i / BITS_PER_LONG;
diff --git a/mm/bootmem.c b/mm/bootmem.c
index 45275f1..c1330cc 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -65,7 +65,7 @@
 	pgdat->pgdat_next = pgdat_list;
 	pgdat_list = pgdat;
 
-	mapsize = (mapsize + (sizeof(long) - 1UL)) & ~(sizeof(long) - 1UL);
+	mapsize = ALIGN(mapsize, sizeof(long));
 	bdata->node_bootmem_map = phys_to_virt(mapstart << PAGE_SHIFT);
 	bdata->node_boot_start = (start << PAGE_SHIFT);
 	bdata->node_low_pfn = end;
@@ -186,7 +186,7 @@
 	} else
 		preferred = 0;
 
-	preferred = ((preferred + align - 1) & ~(align - 1)) >> PAGE_SHIFT;
+	preferred = ALIGN(preferred, align) >> PAGE_SHIFT;
 	preferred += offset;
 	areasize = (size+PAGE_SIZE-1)/PAGE_SIZE;
 	incr = align >> PAGE_SHIFT ? : 1;
@@ -227,7 +227,7 @@
 	 */
 	if (align < PAGE_SIZE &&
 	    bdata->last_offset && bdata->last_pos+1 == start) {
-		offset = (bdata->last_offset+align-1) & ~(align-1);
+		offset = ALIGN(bdata->last_offset, align);
 		BUG_ON(offset > PAGE_SIZE);
 		remaining_size = PAGE_SIZE-offset;
 		if (size < remaining_size) {