* range and if this is the main thread, since when VM is enabled we
* have the constraint that I/O thread should only handle non-shared
* objects, in order to avoid race conditions (we don't have per-object
- * locking). */
- if (value >= 0 && value < REDIS_SHARED_INTEGERS &&
+ * locking).
+ *
+ * Note that we also avoid using shared integers when maxmemory is used
+ * because very object needs to have a private LRU field for the LRU
+ * algorithm to work well. */
+ if (server.maxmemory == 0 && value >= 0 && value < REDIS_SHARED_INTEGERS &&
pthread_equal(pthread_self(),server.mainthread)) {
decrRefCount(o);
incrRefCount(shared.integers[value]);