diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index ba6b08c..0760d352 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -121,7 +121,7 @@
 
 		b = (((xfs_dfsbno_t)l0 & xfs_mask64lo(9)) << 43) |
 		    (((xfs_dfsbno_t)l1) >> 21);
-		ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b));
+		ASSERT((b >> 32) == 0 || isnulldstartblock(b));
 		s->br_startblock = (xfs_fsblock_t)b;
 	}
 #else	/* !DEBUG */
@@ -172,7 +172,7 @@
 
 	b = (((xfs_dfsbno_t)r->l0 & xfs_mask64lo(9)) << 43) |
 	    (((xfs_dfsbno_t)r->l1) >> 21);
-	ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b));
+	ASSERT((b >> 32) == 0 || isnulldstartblock(b));
 	return (xfs_fsblock_t)b;
 #else	/* !DEBUG */
 	return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21);
@@ -261,7 +261,7 @@
 		((xfs_bmbt_rec_base_t)blockcount &
 		(xfs_bmbt_rec_base_t)xfs_mask64lo(21));
 #else	/* !XFS_BIG_BLKNOS */
-	if (ISNULLSTARTBLOCK(startblock)) {
+	if (isnullstartblock(startblock)) {
 		r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) |
 			((xfs_bmbt_rec_base_t)startoff << 9) |
 			 (xfs_bmbt_rec_base_t)xfs_mask64lo(9);
@@ -321,7 +321,7 @@
 		 ((xfs_bmbt_rec_base_t)blockcount &
 		  (xfs_bmbt_rec_base_t)xfs_mask64lo(21)));
 #else	/* !XFS_BIG_BLKNOS */
-	if (ISNULLSTARTBLOCK(startblock)) {
+	if (isnullstartblock(startblock)) {
 		r->l0 = cpu_to_be64(
 			((xfs_bmbt_rec_base_t)extent_flag << 63) |
 			 ((xfs_bmbt_rec_base_t)startoff << 9) |
@@ -382,7 +382,7 @@
 	r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)xfs_mask64lo(21)) |
 		  (xfs_bmbt_rec_base_t)(v << 21);
 #else	/* !XFS_BIG_BLKNOS */
-	if (ISNULLSTARTBLOCK(v)) {
+	if (isnullstartblock(v)) {
 		r->l0 |= (xfs_bmbt_rec_base_t)xfs_mask64lo(9);
 		r->l1 = (xfs_bmbt_rec_base_t)xfs_mask64hi(11) |
 			  ((xfs_bmbt_rec_base_t)v << 21) |