probe::nfs.fop.read_iter — NFS client read_iter file operation
nfs.fop.read_iter
inoinode number
cache_timewhen we started read-caching this inode
poscurrent position of file
devdevice identifier
attrtimeohow 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.
cache_validcache related bit mask flag
parent_nameparent dir name
file_namefile name
countread bytes