Name
ipc_lock — 
     lock an ipc structure without rwsem held
 
Synopsis
| struct kern_ipc_perm * ipc_lock ( | struct ipc_ids * ids, | 
|  | int id ); | 
 
Arguments
- ids
- 
     ipc identifier set
     
- id
- 
     ipc id to look for
     
Description
   Look for an id in the ipc ids idr and lock the associated ipc object.
   
   The ipc object is locked on successful exit.