diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c
index 68cb1e7..d495f82 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.c
+++ b/fs/xfs/libxfs/xfs_trans_resv.c
@@ -64,6 +64,28 @@ xfs_calc_buf_res(
 }
 
 /*
+ * Per-extent log reservation for the allocation btree changes
+ * involved in freeing or allocating an extent. When rmap is not enabled,
+ * there are only two trees that will be modified (free space trees), and when
+ * rmap is enabled there will be three (freespace + rmap trees). The number of
+ * blocks reserved is based on the formula:
+ *
+ * num trees * ((2 blocks/level * max depth) - 1)
+ */
+static uint
+xfs_allocfree_log_count(
+	struct xfs_mount *mp,
+	uint		num_ops)
+{
+	uint		num_trees = 2;
+
+	if (xfs_sb_version_hasrmapbt(&mp->m_sb))
+		num_trees++;
+
+	return num_ops * num_trees * (2 * mp->m_ag_maxlevels - 1);
+}
+
+/*
  * Logging inodes is really tricksy. They are logged in memory format,
  * which means that what we write into the log doesn't directly translate into
  * the amount of space they use on disk.
@@ -126,7 +148,7 @@ xfs_calc_inode_res(
  */
 STATIC uint
 xfs_calc_finobt_res(
-	struct xfs_mount 	*mp,
+	struct xfs_mount	*mp,
 	int			alloc,
 	int			modify)
 {
@@ -137,7 +159,7 @@ xfs_calc_finobt_res(
 
 	res = xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1));
 	if (alloc)
-		res += xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), 
+		res += xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 					XFS_FSB_TO_B(mp, 1));
 	if (modify)
 		res += (uint)XFS_FSB_TO_B(mp, 1);
@@ -188,10 +210,10 @@ xfs_calc_write_reservation(
 		     xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
 				      XFS_FSB_TO_B(mp, 1)) +
 		     xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
 				      XFS_FSB_TO_B(mp, 1))),
 		    (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
 				      XFS_FSB_TO_B(mp, 1))));
 }
 
@@ -217,10 +239,10 @@ xfs_calc_itruncate_reservation(
 		     xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1,
 				      XFS_FSB_TO_B(mp, 1))),
 		    (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4),
 				      XFS_FSB_TO_B(mp, 1)) +
 		    xfs_calc_buf_res(5, 0) +
-		    xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		    xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				     XFS_FSB_TO_B(mp, 1)) +
 		    xfs_calc_buf_res(2 + mp->m_ialloc_blks +
 				     mp->m_in_maxlevels, 0)));
@@ -247,7 +269,7 @@ xfs_calc_rename_reservation(
 		     xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp),
 				      XFS_FSB_TO_B(mp, 1))),
 		    (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 3),
 				      XFS_FSB_TO_B(mp, 1))));
 }
 
@@ -286,7 +308,7 @@ xfs_calc_link_reservation(
 		     xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
 				      XFS_FSB_TO_B(mp, 1))),
 		    (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				      XFS_FSB_TO_B(mp, 1))));
 }
 
@@ -324,7 +346,7 @@ xfs_calc_remove_reservation(
 		     xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
 				      XFS_FSB_TO_B(mp, 1))),
 		    (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
 				      XFS_FSB_TO_B(mp, 1))));
 }
 
@@ -371,7 +393,7 @@ xfs_calc_create_resv_alloc(
 		mp->m_sb.sb_sectsize +
 		xfs_calc_buf_res(mp->m_ialloc_blks, XFS_FSB_TO_B(mp, 1)) +
 		xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
-		xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				 XFS_FSB_TO_B(mp, 1));
 }
 
@@ -399,7 +421,7 @@ xfs_calc_icreate_resv_alloc(
 	return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
 		mp->m_sb.sb_sectsize +
 		xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
-		xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				 XFS_FSB_TO_B(mp, 1)) +
 		xfs_calc_finobt_res(mp, 0, 0);
 }
@@ -483,7 +505,7 @@ xfs_calc_ifree_reservation(
 		xfs_calc_buf_res(1, 0) +
 		xfs_calc_buf_res(2 + mp->m_ialloc_blks +
 				 mp->m_in_maxlevels, 0) +
-		xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				 XFS_FSB_TO_B(mp, 1)) +
 		xfs_calc_finobt_res(mp, 0, 1);
 }
@@ -513,7 +535,7 @@ xfs_calc_growdata_reservation(
 	struct xfs_mount	*mp)
 {
 	return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
-		xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				 XFS_FSB_TO_B(mp, 1));
 }
 
@@ -535,7 +557,7 @@ xfs_calc_growrtalloc_reservation(
 		xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
 				 XFS_FSB_TO_B(mp, 1)) +
 		xfs_calc_inode_res(mp, 1) +
-		xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				 XFS_FSB_TO_B(mp, 1));
 }
 
@@ -611,7 +633,7 @@ xfs_calc_addafork_reservation(
 		xfs_calc_buf_res(1, mp->m_dir_geo->blksize) +
 		xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1,
 				 XFS_FSB_TO_B(mp, 1)) +
-		xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
+		xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
 				 XFS_FSB_TO_B(mp, 1));
 }
 
@@ -634,7 +656,7 @@ xfs_calc_attrinval_reservation(
 		    xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
 				     XFS_FSB_TO_B(mp, 1))),
 		   (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
-		    xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4),
+		    xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4),
 				     XFS_FSB_TO_B(mp, 1))));
 }
 
@@ -701,7 +723,7 @@ xfs_calc_attrrm_reservation(
 					XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) +
 		     xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)),
 		    (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
-		     xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
+		     xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
 				      XFS_FSB_TO_B(mp, 1))));
 }
 
diff --git a/fs/xfs/libxfs/xfs_trans_resv.h b/fs/xfs/libxfs/xfs_trans_resv.h
index 7978150..0eb46ed 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.h
+++ b/fs/xfs/libxfs/xfs_trans_resv.h
@@ -68,16 +68,6 @@ struct xfs_trans_resv {
 #define M_RES(mp)	(&(mp)->m_resv)
 
 /*
- * Per-extent log reservation for the allocation btree changes
- * involved in freeing or allocating an extent.
- * 2 trees * (2 blocks/level * max depth - 1) * block size
- */
-#define	XFS_ALLOCFREE_LOG_RES(mp,nx) \
-	((nx) * (2 * XFS_FSB_TO_B((mp), 2 * (mp)->m_ag_maxlevels - 1)))
-#define	XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
-	((nx) * (2 * (2 * (mp)->m_ag_maxlevels - 1)))
-
-/*
  * Per-directory log reservation for any directory change.
  * dir blocks: (1 btree block per level + data block + free block) * dblock size
  * bmap btree: (levels + 2) * max depth * block size
