/* Ok, this object can be encoded...
*
* Can I use a shared object? Only if the object is inside a given
- * 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).
+ * range and if the back end in use is in-memory. For disk store every
+ * object in memory used as value should be independent.
*
* 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
+ * because every 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)) {
+ if (server.ds_enabled == 0 &&
+ server.maxmemory == 0 && value >= 0 && value < REDIS_SHARED_INTEGERS &&
+ pthread_equal(pthread_self(),server.mainthread))
+ {
decrRefCount(o);
incrRefCount(shared.integers[value]);
return shared.integers[value];