go.mod: github.com/moby/sys/mountinfo v0.4.1

full diff: https://github.com/moby/sys/compare/mountinfo/v0.4.0...mountinfo/v0.4.1

Fixes and improvements:

- Fix PrefixFilter() being too greedy
- TestMountedBy*: add missing pre-checks
- Documentation improvements

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go

@@ -12,7 +12,8 @@ import (
 // GetMountsFromReader retrieves a list of mounts from the
 // reader provided, with an optional filter applied (use nil
 // for no filter). This can be useful in tests or benchmarks
-// that provide a fake mountinfo data.
+// that provide fake mountinfo data, or when a source other
+// than /proc/self/mountinfo needs to be read from.
 //
 // This function is Linux-specific.
 func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
@@ -133,8 +134,6 @@ func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
 	return out, nil
 }
 
-// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
-// bind mounts
 func parseMountTable(filter FilterFunc) ([]*Info, error) {
 	f, err := os.Open("/proc/self/mountinfo")
 	if err != nil {