Provided by: systemtap-doc_2.9-2ubuntu2_all 

NAME
probe::nfs.fop.lock - NFS client file lock operation
SYNOPSIS
nfs.fop.lock
VALUES
fl_flag
lock flags
i_mode
file type and access rights
cmd
cmd arguments
fl_type
lock type
ino
inode number
dev
device identifier
fl_end
ending offset of locked region
fl_start
starting offset of locked region
SEE ALSO
tapset::nfs(3stap)
SystemTap Tapset Reference April 2016 PROBE::NFS.FOP.L(3stap)