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