diff --git a/include/sys/zio.h b/include/sys/zio.h
index e46455ea99..5bb7120834 100644
--- a/include/sys/zio.h
+++ b/include/sys/zio.h
@@ -699,6 +699,8 @@ extern void spa_handle_ignored_writes(spa_t *spa);
 /* zbookmark_phys functions */
 boolean_t zbookmark_subtree_completed(const struct dnode_phys *dnp,
     const zbookmark_phys_t *subtree_root, const zbookmark_phys_t *last_block);
+boolean_t zbookmark_subtree_tbd(const struct dnode_phys *dnp,
+    const zbookmark_phys_t *subtree_root, const zbookmark_phys_t *last_block);
 int zbookmark_compare(uint16_t dbss1, uint8_t ibs1, uint16_t dbss2,
     uint8_t ibs2, const zbookmark_phys_t *zb1, const zbookmark_phys_t *zb2);
 
diff --git a/module/zfs/dsl_scan.c b/module/zfs/dsl_scan.c
index d4e46f6bb9..603fe84ecd 100644
--- a/module/zfs/dsl_scan.c
+++ b/module/zfs/dsl_scan.c
@@ -1795,12 +1795,11 @@ dsl_scan_check_resume(dsl_scan_t *scn, const dnode_phys_t *dnp,
 
 		/*
 		 * If we found the block we're trying to resume from, or
-		 * we went past it to a different object, zero it out to
-		 * indicate that it's OK to start checking for suspending
-		 * again.
+		 * we went past it, zero it out to indicate that it's OK
+		 * to start checking for suspending again.
 		 */
-		if (bcmp(zb, &scn->scn_phys.scn_bookmark, sizeof (*zb)) == 0 ||
-		    zb->zb_object > scn->scn_phys.scn_bookmark.zb_object) {
+		if (zbookmark_subtree_tbd(dnp, zb,
+		    &scn->scn_phys.scn_bookmark)) {
 			dprintf("resuming at %llx/%llx/%llx/%llx\n",
 			    (longlong_t)zb->zb_objset,
 			    (longlong_t)zb->zb_object,
diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index 04b5d121e1..c1fd2de2e5 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -5008,7 +5008,7 @@ zbookmark_subtree_completed(const dnode_phys_t *dnp,
 {
 	zbookmark_phys_t mod_zb = *subtree_root;
 	mod_zb.zb_blkid++;
-	ASSERT(last_block->zb_level == 0);
+	ASSERT0(last_block->zb_level);
 
 	/* The objset_phys_t isn't before anything. */
 	if (dnp == NULL)
@@ -5034,6 +5034,22 @@ zbookmark_subtree_completed(const dnode_phys_t *dnp,
 	    last_block) <= 0);
 }
 
+/*
+ * This function is similar to zbookmark_subtree_completed(), but returns true
+ * if subtree_root is equal or ahead of last_block, i.e. still to be done.
+ */
+boolean_t
+zbookmark_subtree_tbd(const dnode_phys_t *dnp,
+    const zbookmark_phys_t *subtree_root, const zbookmark_phys_t *last_block)
+{
+	ASSERT0(last_block->zb_level);
+	if (dnp == NULL)
+		return (B_FALSE);
+	return (zbookmark_compare(dnp->dn_datablkszsec, dnp->dn_indblkshift,
+	    1ULL << (DNODE_BLOCK_SHIFT - SPA_MINBLOCKSHIFT), 0, subtree_root,
+	    last_block) >= 0);
+}
+
 EXPORT_SYMBOL(zio_type_name);
 EXPORT_SYMBOL(zio_buf_alloc);
 EXPORT_SYMBOL(zio_data_buf_alloc);