centos man page for rpc_queue_upcall

RPC_QUEUE_UPCALL(9)						 Linux Networking					       RPC_QUEUE_UPCALL(9)

NAME
       rpc_queue_upcall - queue an upcall message to userspace

SYNOPSIS
       int rpc_queue_upcall(struct rpc_pipe * pipe, struct rpc_pipe_msg * msg);

ARGUMENTS
       pipe
	   upcall pipe on which to queue given message

       msg
	   message to queue

DESCRIPTION
       Call with an inode created by rpc_mkpipe to queue an upcall. A userspace process may then later read the upcall by performing a read on an
       open file for this inode. It is up to the caller to initialize the fields of msg (other than msg->list) appropriately.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       RPC_QUEUE_UPCALL(9)