--- a/packages/fs/jffs2/current/src/malloc-ecos.c
+++ b/packages/fs/jffs2/current/src/malloc-ecos.c
@@ -12,8 +12,13 @@
  */
 
 #include <linux/kernel.h>
+#include <cyg/hal/drv_api.h>
 #include "nodelist.h"
 
+#if !defined(CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE)
+# define CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE 0
+#endif
+
 struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
 {
 	return malloc(sizeof(struct jffs2_full_dirent) + namesize);
@@ -64,6 +69,27 @@ void jffs2_free_tmp_dnode_info(struct jf
 	free(x);
 }
 
+struct jffs2_node_frag *jffs2_alloc_node_frag(void)
+{
+	return malloc(sizeof(struct jffs2_node_frag));
+}
+
+void jffs2_free_node_frag(struct jffs2_node_frag *x)
+{
+	free(x);
+}
+
+#if CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE == 0
+
+int jffs2_create_slab_caches(void)
+{
+	return 0;
+}
+
+void jffs2_destroy_slab_caches(void)
+{
+}
+
 struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
 {
 	return malloc(sizeof(struct jffs2_raw_node_ref));
@@ -74,16 +100,54 @@ void jffs2_free_raw_node_ref(struct jffs
 	free(x);
 }
 
-struct jffs2_node_frag *jffs2_alloc_node_frag(void)
+#else // CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE == 0
+
+static struct jffs2_raw_node_ref
+	rnr_pool[CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE] __attribute__ ((aligned (4))),
+	* first = NULL;
+static cyg_drv_mutex_t mutex;
+
+int jffs2_create_slab_caches(void)
 {
-	return malloc(sizeof(struct jffs2_node_frag));
+	struct jffs2_raw_node_ref * p;
+	cyg_drv_mutex_init(&mutex);
+	for (
+		p = rnr_pool;
+		p < rnr_pool + CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE - 1;
+		p++
+	)
+		p->next_phys = p + 1;
+	rnr_pool[CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE - 1].next_phys = NULL;
+	first = &rnr_pool[0];
+	return 0;
 }
 
-void jffs2_free_node_frag(struct jffs2_node_frag *x)
+void jffs2_destroy_slab_caches(void)
+{
+}
+
+struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
 {
-	free(x);
+	struct jffs2_raw_node_ref * p;
+	
+	cyg_drv_mutex_lock(&mutex);
+	p = first;
+	if (p != NULL)
+		first = p->next_phys;
+	cyg_drv_mutex_unlock(&mutex);
+	return p;
 }
 
+void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
+{
+	cyg_drv_mutex_lock(&mutex);
+	x->next_phys = first;
+	first = x;
+	cyg_drv_mutex_unlock(&mutex);
+}
+
+#endif // CYGNUM_FS_JFFS2_RAW_NODE_REF_CACHE_POOL_SIZE == 0
+
 struct jffs2_inode_cache *jffs2_alloc_inode_cache(void)
 {
 	struct jffs2_inode_cache *ret = malloc(sizeof(struct jffs2_inode_cache));