Run LRU during fellow_cache_test

src/fellow_cache.c

@@ -2973,8 +2973,6 @@ fellow_cache_async_thread(void *priv)
 	return (NULL);
 }
 
-// XXX better way
-#ifndef TEST_DRIVER
 static inline void
 fellow_cache_seg_evict_locked(
     struct fellow_cache_seg *fcs, struct buddy_ptr_extent *alloc)
@@ -3350,7 +3348,6 @@ fellow_cache_lru_thread(struct worker *wrk, void *priv)
 	free(r);
 	return (NULL);
 }
-#endif // TEST_DRIVER
 
 /* returns if moved */
 int
@@ -5103,21 +5100,20 @@ fellow_cache_fini(struct fellow_cache **fcp)
 #include "vsha256.h"
 #include "fellow_testenv.h"
 
+void
+stvfe_sumstat(struct worker *wrk)
+{
+	(void) wrk;
+}
+
 int
 stvfe_mutate(struct worker *wrk, struct fellow_cache_lru *lru,
     struct objcore *oc)
 {
-	WRONG("no lru during test");
-	return (1);
+	WRONG("fellow_cache_test objects to not have an objcore");
+	return (0);
 }
 
-static void *
-fellow_cache_lru_thread(struct worker *wrk, void *priv)
-{
-	(void) wrk;
-	(void) priv;
-	return (NULL);
-}
 #ifdef DEBUG
 const char * const filename = "/tmp/fellowfile.cachetest";
 #else