1 The locking/waiting hierarchy here is this:
3 - lock scp's bufCreateLock
5 - resv multiple simul. buffers reservation
6 - lock buffer I/O flags
11 - scache flags (storing, fetching, etc); if set for more than one
12 vnode in a volume, must be set in vnode order (see cm_Rename).
16 - lock tran_globalLock
25 - cm_connLock (locked before cm_userLock in cm_GCConnections)
27 - cm_serverLock (locked after cm_cellLock in cm_IoctlGetCell)
29 - cm_aclLock (locked before cm_userLock throughout cm_aclent.c)