Use the cache for Lookup, too.
Use the cache for Lookup, too.

kahing/gcsfuse,mbrukman/gcsfuse,BanzaiMan/gcsfuse,jacobsa/ratelimit,BanzaiMan/gcsfuse,GoogleCloudPlatform/gcsfuse,jacobsa/timeutil,GoogleCloudPlatform/gcsfuse,GoogleCloudPlatform/gcsfuse