SYNOPSIS
sunrpc.sched.release_task
VALUES
xid
- the transmission id in the RPC call
vers
- the program version in the RPC call
prog
- the program number in the RPC call
prot
- the IP protocol in the RPC call
tk_flags
- the flags of the task
DESCRIPTION
rpc_release_task function might not be found for a particular kernel. So, if we can't find it, just return '-1' for everything.