Sketched out fileSystem.LookUpInode.
Sketched out fileSystem.LookUpInode.

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