diff --git a/include/sys/dmu_impl.h b/include/sys/dmu_impl.h
index 1cc18e5ca..ed5a3062d 100644
--- a/include/sys/dmu_impl.h
+++ b/include/sys/dmu_impl.h
@@ -168,7 +168,6 @@ extern "C" {
  * 	dn_allocated_txg
  * 	dn_free_txg
  * 	dn_assigned_txg
- * 	dn_dirty_txg
  * 	dn_dirtycnt
  * 	dd_assigned_tx
  * 	dn_notxholds
diff --git a/include/sys/dnode.h b/include/sys/dnode.h
index efff9be93..50ddafe99 100644
--- a/include/sys/dnode.h
+++ b/include/sys/dnode.h
@@ -340,7 +340,6 @@ struct dnode {
 	uint64_t dn_allocated_txg;
 	uint64_t dn_free_txg;
 	uint64_t dn_assigned_txg;
-	uint64_t dn_dirty_txg;			/* txg dnode was last dirtied */
 	uint8_t dn_dirtycnt;
 	kcondvar_t dn_notxholds;
 	kcondvar_t dn_nodnholds;
@@ -469,9 +468,6 @@ void dnode_free_interior_slots(dnode_t *dn);
 
 void dnode_set_storage_type(dnode_t *dn, dmu_object_type_t type);
 
-#define	DNODE_IS_DIRTY(_dn)						\
-	((_dn)->dn_dirty_txg >= spa_syncing_txg((_dn)->dn_objset->os_spa))
-
 #define	DNODE_LEVEL_IS_CACHEABLE(_dn, _level)				\
 	((_dn)->dn_objset->os_primary_cache == ZFS_CACHE_ALL ||		\
 	(((_level) > 0 || DMU_OT_IS_METADATA((_dn)->dn_type)) &&	\
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
index 7403f10d9..90ee5d04e 100644
--- a/module/zfs/dbuf.c
+++ b/module/zfs/dbuf.c
@@ -2291,8 +2291,6 @@ dbuf_dirty(dmu_buf_impl_t *db, dmu_tx_t *tx)
 
 	mutex_enter(&dn->dn_mtx);
 	dnode_set_dirtyctx(dn, tx, db);
-	if (tx->tx_txg > dn->dn_dirty_txg)
-		dn->dn_dirty_txg = tx->tx_txg;
 	mutex_exit(&dn->dn_mtx);
 
 	if (db->db_blkid == DMU_SPILL_BLKID)
diff --git a/module/zfs/dnode.c b/module/zfs/dnode.c
index 0ae88177c..34c4e1ccd 100644
--- a/module/zfs/dnode.c
+++ b/module/zfs/dnode.c
@@ -173,7 +173,6 @@ dnode_cons(void *arg, void *unused, int kmflag)
 	dn->dn_allocated_txg = 0;
 	dn->dn_free_txg = 0;
 	dn->dn_assigned_txg = 0;
-	dn->dn_dirty_txg = 0;
 	dn->dn_dirtyctx = 0;
 	dn->dn_dirtyctx_firstset = NULL;
 	dn->dn_dirtycnt = 0;
@@ -230,7 +229,6 @@ dnode_dest(void *arg, void *unused)
 	ASSERT0(dn->dn_allocated_txg);
 	ASSERT0(dn->dn_free_txg);
 	ASSERT0(dn->dn_assigned_txg);
-	ASSERT0(dn->dn_dirty_txg);
 	ASSERT0(dn->dn_dirtyctx);
 	ASSERT0P(dn->dn_dirtyctx_firstset);
 	ASSERT0(dn->dn_dirtycnt);
@@ -694,7 +692,6 @@ dnode_destroy(dnode_t *dn)
 	dn->dn_allocated_txg = 0;
 	dn->dn_free_txg = 0;
 	dn->dn_assigned_txg = 0;
-	dn->dn_dirty_txg = 0;
 	dn->dn_dirtycnt = 0;
 
 	dn->dn_dirtyctx = 0;
@@ -807,7 +804,6 @@ dnode_allocate(dnode_t *dn, dmu_object_type_t ot, int blocksize, int ibs,
 
 	dn->dn_free_txg = 0;
 	dn->dn_dirtyctx_firstset = NULL;
-	dn->dn_dirty_txg = 0;
 	dn->dn_dirtycnt = 0;
 
 	dn->dn_allocated_txg = tx->tx_txg;
@@ -959,7 +955,6 @@ dnode_move_impl(dnode_t *odn, dnode_t *ndn)
 	ndn->dn_allocated_txg = odn->dn_allocated_txg;
 	ndn->dn_free_txg = odn->dn_free_txg;
 	ndn->dn_assigned_txg = odn->dn_assigned_txg;
-	ndn->dn_dirty_txg = odn->dn_dirty_txg;
 	ndn->dn_dirtyctx = odn->dn_dirtyctx;
 	ndn->dn_dirtyctx_firstset = odn->dn_dirtyctx_firstset;
 	ndn->dn_dirtycnt = odn->dn_dirtycnt;
@@ -1025,7 +1020,6 @@ dnode_move_impl(dnode_t *odn, dnode_t *ndn)
 	odn->dn_allocated_txg = 0;
 	odn->dn_free_txg = 0;
 	odn->dn_assigned_txg = 0;
-	odn->dn_dirty_txg = 0;
 	odn->dn_dirtyctx = 0;
 	odn->dn_dirtyctx_firstset = NULL;
 	odn->dn_dirtycnt = 0;
@@ -1279,8 +1273,8 @@ dnode_check_slots_free(dnode_children_t *children, int idx, int slots)
 		} else if (DN_SLOT_IS_PTR(dn)) {
 			mutex_enter(&dn->dn_mtx);
 			boolean_t can_free = (dn->dn_type == DMU_OT_NONE &&
-			    zfs_refcount_is_zero(&dn->dn_holds) &&
-			    !DNODE_IS_DIRTY(dn));
+			    dn->dn_dirtycnt == 0 &&
+			    zfs_refcount_is_zero(&dn->dn_holds));
 			mutex_exit(&dn->dn_mtx);
 
 			if (!can_free)