Name
check_conflicting_open — 
     see if the given dentry points to a file that has an existing open that would conflict with the desired lease.
 
Synopsis
| int check_conflicting_open ( | const struct dentry * dentry, | 
|  | const long arg, | 
|  | int flags ); | 
 
Arguments
- dentry
- 
     dentry to check
     
- arg
- 
     type of lease that we're trying to acquire
     
- flags
- 
     current lock flags
     
Description
   Check to see if there's an existing open fd on this file that would
   conflict with the lease we're trying to set.