--- libmalloc/libmalloc-409.40.6/src/magazine_small.c
+++ libmalloc/libmalloc-374.60.3/src/magazine_small.c
@@ -833,8 +833,8 @@
 		OSAtomicIncrement32Barrier(&(REGION_TRAILER_FOR_SMALL_REGION(r)->pinned_to_depot));
 		SZONE_MAGAZINE_PTR_UNLOCK(depot_ptr);
 		for (i = 0; i < advisories; ++i) {
-			uintptr_t addr = (advisory[i].pnum << vm_kernel_page_shift) + (uintptr_t)r;
-			size_t size = advisory[i].size << vm_kernel_page_shift;
+			uintptr_t addr = (advisory[i].pnum << vm_page_quanta_shift) + (uintptr_t)r;
+			size_t size = advisory[i].size << vm_page_quanta_shift;
 
 			mvm_madvise_free(rack, r, addr, addr + size, NULL, rack->debug_flags & MALLOC_DO_SCRIBBLE);
 		}
@@ -915,6 +915,11 @@
 small_get_region_from_depot(rack_t *rack, magazine_t *small_mag_ptr, mag_index_t mag_index, msize_t msize)
 {
 	magazine_t *depot_ptr = &(rack->magazines[DEPOT_MAGAZINE_INDEX]);
+
+	/* FIXME: Would Uniprocessor benefit from recirc and MADV_FREE? */
+	if (rack->num_magazines == 1) { // Uniprocessor, single magazine, so no recirculation necessary
+		return 0;
+	}
 
 #if DEBUG_MALLOC
 	if (DEPOT_MAGAZINE_INDEX == mag_index) {
@@ -1272,7 +1277,11 @@
 	region_trailer_t *node = REGION_TRAILER_FOR_SMALL_REGION(region);
 	size_t bytes_used = node->bytes_used;
 
-	if (DEPOT_MAGAZINE_INDEX != mag_index) {
+	/* FIXME: Would Uniprocessor benefit from recirc and MADV_FREE? */
+	if (rack->num_magazines == 1) { // Uniprocessor, single magazine, so no recirculation necessary
+		/* NOTHING */
+		return TRUE; // Caller must do SZONE_MAGAZINE_PTR_UNLOCK(tiny_mag_ptr)
+	} else if (DEPOT_MAGAZINE_INDEX != mag_index) {
 		// Emptiness discriminant
 		if (small_region_below_recirc_threshold(region)) {
 			/* Region has crossed threshold from density to sparsity. Mark it "suitable" on the