kubernetes/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go

type FilterFunc …

// PrefixFilter discards all entries whose mount points do not start with, or
// are equal to the path specified in prefix. The prefix path must be absolute,
// have all symlinks resolved, and cleaned (i.e. no extra slashes or dots).
//
// PrefixFilter treats prefix as a path, not a partial prefix, which means that
// given "/foo", "/foo/bar" and "/foobar" entries, PrefixFilter("/foo") returns
// "/foo" and "/foo/bar", and discards "/foobar".
func PrefixFilter(prefix string) FilterFunc { … }

// SingleEntryFilter looks for a specific entry.
func SingleEntryFilter(mp string) FilterFunc { … }

// ParentsFilter returns all entries whose mount points
// can be parents of a path specified, discarding others.
//
// For example, given /var/lib/docker/something, entries
// like /var/lib/docker, /var and / are returned.
func ParentsFilter(path string) FilterFunc { … }

// FSTypeFilter returns all entries that match provided fstype(s).
func FSTypeFilter(fstype ...string) FilterFunc { … }