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-rw-r--r--pkg/sentry/vfs/vfs.go4
1 files changed, 4 insertions, 0 deletions
diff --git a/pkg/sentry/vfs/vfs.go b/pkg/sentry/vfs/vfs.go
index 8d7f8f8af..6d2ba53ea 100644
--- a/pkg/sentry/vfs/vfs.go
+++ b/pkg/sentry/vfs/vfs.go
@@ -82,6 +82,10 @@ type VirtualFilesystem struct {
// mountpoints is analogous to Linux's mountpoint_hashtable.
mountpoints map[*Dentry]map[*Mount]struct{}
+ // lastMountID is the last allocated mount ID. lastMountID is accessed
+ // using atomic memory operations.
+ lastMountID uint64
+
// anonMount is a Mount, not included in mounts or mountpoints,
// representing an anonFilesystem. anonMount is used to back
// VirtualDentries returned by VirtualFilesystem.NewAnonVirtualDentry().