diff options
Diffstat (limited to 'pkg/sentry/fs/mount_overlay.go')
| -rw-r--r-- | pkg/sentry/fs/mount_overlay.go | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/pkg/sentry/fs/mount_overlay.go b/pkg/sentry/fs/mount_overlay.go index 4c89673b5..fb60a1aec 100644 --- a/pkg/sentry/fs/mount_overlay.go +++ b/pkg/sentry/fs/mount_overlay.go @@ -31,10 +31,19 @@ type overlayMountSourceOperations struct { func newOverlayMountSource(upper, lower *MountSource, flags MountSourceFlags) *MountSource { upper.IncRef() lower.IncRef() - return NewMountSource(&overlayMountSourceOperations{ + msrc := NewMountSource(&overlayMountSourceOperations{ upper: upper, lower: lower, }, &overlayFilesystem{}, flags) + + // Use the minimum number to keep resource usage under limits. + size := lower.fscache.maxSize + if size > upper.fscache.maxSize { + size = upper.fscache.maxSize + } + msrc.fscache.setMaxSize(size) + + return msrc } // Revalidate implements MountSourceOperations.Revalidate for an overlay by |