Finer locks - don't take global lock around syscalls.
Finer locks - don't take global lock around syscalls.

libopenstorage/openstorage,pault84/openstorage,libopenstorage/openstorage,pault84/openstorage,pault84/openstorage,ModelRocket/openstorage,ModelRocket/openstorage,libopenstorage/openstorage