Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
probe::nfs.fop.write - NFS client write operation
SYNOPSIS
nfs.fop.write
VALUES
devname
block device name
DESCRIPTION
SystemTap uses the vfs.do_sync_write probe to implement this probe and as a result will get operations
other than the NFS client write operations.
SystemTap Tapset Reference March 2016 PROBE::NFS.FOP.W(3stap)