diff --git a/include/sys/zfs_context.h b/include/sys/zfs_context.h
index 62f7611fa..acd370b23 100644
--- a/include/sys/zfs_context.h
+++ b/include/sys/zfs_context.h
@@ -408,7 +408,7 @@ extern void kstat_set_raw_ops(kstat_t *ksp,
 #define	kmem_cache_alloc(_c, _f) umem_cache_alloc(_c, _f)
 #define	kmem_cache_free(_c, _b)	umem_cache_free(_c, _b)
 #define	kmem_debugging()	0
-#define	kmem_cache_reap_now(_c)		/* nothing */
+#define	kmem_cache_reap_now(_c)	umem_cache_reap_now(_c);
 #define	kmem_cache_set_move(_c, _cb)	/* nothing */
 #define	POINTER_INVALIDATE(_pp)		/* nothing */
 #define	POINTER_IS_VALID(_p)	0
diff --git a/lib/libspl/include/umem.h b/lib/libspl/include/umem.h
index b1c9cb7ff..a89cb4950 100644
--- a/lib/libspl/include/umem.h
+++ b/lib/libspl/include/umem.h
@@ -191,6 +191,11 @@ umem_cache_free(umem_cache_t *cp, void *ptr)
 	umem_free(ptr, cp->cache_bufsize);
 }
 
+static inline void
+umem_cache_reap_now(umem_cache_t *cp)
+{
+}
+
 #ifdef  __cplusplus
 }
 #endif
diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index 99fa69872..9bf527203 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -3043,6 +3043,7 @@ arc_kmem_reap_now(arc_reclaim_strategy_t strat, uint64_t bytes)
 	kmem_cache_t		*prev_data_cache = NULL;
 	extern kmem_cache_t	*zio_buf_cache[];
 	extern kmem_cache_t	*zio_data_buf_cache[];
+	extern kmem_cache_t	*range_seg_cache;
 
 	if ((arc_meta_used >= arc_meta_limit) && zfs_arc_meta_prune) {
 		/*
@@ -3073,6 +3074,7 @@ arc_kmem_reap_now(arc_reclaim_strategy_t strat, uint64_t bytes)
 	kmem_cache_reap_now(buf_cache);
 	kmem_cache_reap_now(hdr_full_cache);
 	kmem_cache_reap_now(hdr_l2only_cache);
+	kmem_cache_reap_now(range_seg_cache);
 }
 
 /*
diff --git a/module/zfs/range_tree.c b/module/zfs/range_tree.c
index 22175e06a..6422fd1c1 100644
--- a/module/zfs/range_tree.c
+++ b/module/zfs/range_tree.c
@@ -33,7 +33,7 @@
 #include <sys/zio.h>
 #include <sys/range_tree.h>
 
-static kmem_cache_t *range_seg_cache;
+kmem_cache_t *range_seg_cache;
 
 void
 range_tree_init(void)