diff options
Diffstat (limited to 'lib/btrfsprogs/btrfsinspect/rebuildnodes/s1_uuidmap.go')
| -rw-r--r-- | lib/btrfsprogs/btrfsinspect/rebuildnodes/s1_uuidmap.go | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/btrfsprogs/btrfsinspect/rebuildnodes/s1_uuidmap.go b/lib/btrfsprogs/btrfsinspect/rebuildnodes/s1_uuidmap.go index caccfb9..3ca195a 100644 --- a/lib/btrfsprogs/btrfsinspect/rebuildnodes/s1_uuidmap.go +++ b/lib/btrfsprogs/btrfsinspect/rebuildnodes/s1_uuidmap.go @@ -81,11 +81,18 @@ func newFullAncestorLister(uuidMap uuidMap, treeAncestors map[btrfsprim.ObjID]co } func (fa fullAncestorLister) GetFullAncestors(child btrfsprim.ObjID) containers.Set[btrfsprim.ObjID] { - if memoized := fa.memos[child]; memoized != nil { + if memoized, ok := fa.memos[child]; ok { + if memoized == nil { + panic(fmt.Errorf("loop involving tree %v", child)) + } return memoized } + fa.memos[child] = nil + ret := make(containers.Set[btrfsprim.ObjID]) - fa.memos[child] = ret + defer func() { + fa.memos[child] = ret + }() // Try to use '.uuidMap' instead of '.treeAncestors' if possible. knownAncestors := make(containers.Set[btrfsprim.ObjID]) |