NAME
__setlease - sets a lease on an open file
SYNOPSIS
int __setlease (struct file * filp, long arg,
struct file_lock ** flp);
ARGUMENTS
filp file pointer
arg type of lease to obtain
flp input - file_lock to use, output - file_lock inserted
DESCRIPTION
The (input) flp->fl_lmops->fl_break function is required by
break_lease.
Called with kernel lock held.