diff --git a/include/xfs_trans.h b/include/xfs_trans.h
index 1f08767..9292a4a 100644
--- a/include/xfs_trans.h
+++ b/include/xfs_trans.h
@@ -91,7 +91,7 @@
 /* cancel dfops associated with a transaction */
 void xfs_defer_cancel(struct xfs_trans *);
 
-struct xfs_buf *libxfs_trans_getsb(struct xfs_trans *, struct xfs_mount *);
+struct xfs_buf *libxfs_trans_getsb(struct xfs_trans *);
 
 void	libxfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
 void	libxfs_trans_log_inode (struct xfs_trans *, struct xfs_inode *,
diff --git a/libxfs/trans.c b/libxfs/trans.c
index 51ce830..6838b72 100644
--- a/libxfs/trans.c
+++ b/libxfs/trans.c
@@ -463,10 +463,10 @@
 
 xfs_buf_t *
 libxfs_trans_getsb(
-	xfs_trans_t		*tp,
-	struct xfs_mount	*mp)
+	struct xfs_trans	*tp)
 {
-	xfs_buf_t		*bp;
+	struct xfs_mount	*mp = tp->t_mountp;
+	struct xfs_buf		*bp;
 	struct xfs_buf_log_item	*bip;
 	int			len = XFS_FSS_TO_BB(mp, 1);
 	DEFINE_SINGLE_BUF_MAP(map, XFS_SB_DADDR, len);
diff --git a/libxfs/xfs_sb.c b/libxfs/xfs_sb.c
index 302eea1..7c7e56a 100644
--- a/libxfs/xfs_sb.c
+++ b/libxfs/xfs_sb.c
@@ -931,7 +931,7 @@
 	struct xfs_trans	*tp)
 {
 	struct xfs_mount	*mp = tp->t_mountp;
-	struct xfs_buf		*bp = xfs_trans_getsb(tp, mp);
+	struct xfs_buf		*bp = xfs_trans_getsb(tp);
 
 	mp->m_sb.sb_icount = percpu_counter_sum(&mp->m_icount);
 	mp->m_sb.sb_ifree = percpu_counter_sum(&mp->m_ifree);
@@ -1061,7 +1061,7 @@
 	if (error)
 		return error;
 
-	bp = xfs_trans_getsb(tp, mp);
+	bp = xfs_trans_getsb(tp);
 	xfs_log_sb(tp);
 	xfs_trans_bhold(tp, bp);
 	xfs_trans_set_sync(tp);