diff --git a/sys/vm/vm_phys.c b/sys/vm/vm_phys.c
--- a/sys/vm/vm_phys.c
+++ b/sys/vm/vm_phys.c
@@ -678,6 +678,19 @@
         }
 }
 
+static vm_page_t
+vm_phys_enq_chunk(struct vm_freelist *fl, vm_page_t m, int order)
+{
+	int npages;
+
+	KASSERT(order >= 0 && order < VM_NFREEORDER,
+	    ("%s: invalid order %d", __func__, order));
+
+	npages = 1 << order;
+	vm_freelist_add(fl, m, order, 1);
+	return (m + npages);
+}
+
 /*
  * Add the physical pages [m, m + npages) at the beginning of a power-of-two
  * aligned and sized set to the specified free list.
@@ -705,12 +718,9 @@
 		    ("%s: page %p has unexpected order %d",
 		    __func__, m, m->order));
                 order = fls(npages) - 1;
-		KASSERT(order < VM_NFREEORDER,
-		    ("%s: order %d is out of range", __func__, order));
-                vm_freelist_add(fl, m, order, tail);
-		m += 1 << order;
-                npages -= 1 << order;
-        }
+		m = vm_phys_enq_chunk(fl, m, order);
+		npages -= 1 << order;
+	}
 }
 
 /*
@@ -741,10 +751,7 @@
 		    ("vm_phys_enq_range: page %p has unexpected order %d",
 		    m, m->order));
 		order = ffs(npages) - 1;
-		KASSERT(order < VM_NFREEORDER,
-		    ("vm_phys_enq_range: order %d is out of range", order));
-		vm_freelist_add(fl, m, order, tail);
-		m += 1 << order;
+		m = vm_phys_enq_chunk(fl, m, order);
 		npages -= 1 << order;
 	}
 	return (m);
@@ -1219,8 +1226,7 @@
 		KASSERT(seg == &vm_phys_segs[m->segind],
 		    ("%s: page range [%p,%p) spans multiple segments",
 		    __func__, m_end - npages, m));
-		vm_freelist_add(fl, m, order, 1);
-		m += 1 << order;
+		m = vm_phys_enq_chunk(fl, m, order);
 	}
 	/* Free blocks of diminishing size. */
 	vm_phys_enq_beg(m, m_end - m, fl, 1);