diff --git a/kern/arch/mips/vm/dumbvm.c b/kern/arch/mips/vm/dumbvm.c
index 5a7d619..1b2e6cd 100644
--- a/kern/arch/mips/vm/dumbvm.c
+++ b/kern/arch/mips/vm/dumbvm.c
@@ -128,7 +128,7 @@ free_kpages(vaddr_t addr)
 
 unsigned
 int
-coremap_free_bytes() {
+coremap_used_bytes() {
 
 	/* dumbvm doesn't track page allocations. Return 0 so that khu works. */
 
diff --git a/kern/include/vm.h b/kern/include/vm.h
index 96b6ffe..a783f33 100644
--- a/kern/include/vm.h
+++ b/kern/include/vm.h
@@ -56,12 +56,11 @@ vaddr_t alloc_kpages(unsigned npages);
 void free_kpages(vaddr_t addr);
 
 /*
- * Return amount of free memory (in bytes) available in unallocated coremap pages.
- * If there are ongoing allocations, this value could change after it is
- * returned to the caller. But it should have been correct at some point in
- * time.
+ * Return amount of memory (in bytes) used by allocated coremap pages.  If
+ * there are ongoing allocations, this value could change after it is returned
+ * to the caller. But it should have been correct at some point in time.
  */
-unsigned int coremap_free_bytes(void);
+unsigned int coremap_used_bytes(void);
 
 /* TLB shootdown handling called from interprocessor_interrupt */
 void vm_tlbshootdown_all(void);
diff --git a/kern/vm/kmalloc.c b/kern/vm/kmalloc.c
index bc2771a..b4c4f3a 100644
--- a/kern/vm/kmalloc.c
+++ b/kern/vm/kmalloc.c
@@ -834,7 +834,7 @@ kheap_printused(void)
 	for (pr = allbase; pr != NULL; pr = pr->next_all) {
 		total += subpage_stats(pr, true);
 	}
-	total += coremap_free_bytes();
+	total += coremap_used_bytes();
 	spinlock_release(&kmalloc_spinlock);
 
 	snprintf(total_string, sizeof(total_string), "%lu", total);