probe::nfs.fop.sendfile
Name
probe::nfs.fop.sendfile — NFS client send file operation
Synopsis
nfs.fop.sendfile
nfs.fop.sendfile 
Values
cache_valid- cache related bit mask flag
 ppos- current position of file
 count- read bytes
 dev- device identifier
 attrtimeo- how long the cached information is assumed to be valid. We need to revalidate the cached attrs for this inode if jiffies - read_cache_jiffies > attrtimeo.
 ino- inode number
 cache_time- when we started read-caching this inode