Provided by: systemtap-doc_3.1-3ubuntu0.1_all 

NAME
probe::nfs.proc.open - NFS client allocates file read/write context information
SYNOPSIS
nfs.proc.open
VALUES
mode
file mode
flag
file flag
filename
file name
version
NFS version (the function is used for all NFS version)
prot
transfer protocol
server_ip
IP address of server
DESCRIPTION
Allocate file read/write context information
SEE ALSO
tapset::nfs_proc(3stap)
SystemTap Tapset Reference March 2016 PROBE::NFS.PROC.(3stap)