.

wcfs/internal/zdata/δftail.go

@@ -330,7 +330,7 @@ func (δFtail *ΔFtail) rebuild1IfNeeded(foid zodb.Oid) (vδE []_ΔFileEpoch, he
 	}
 
 	// we become responsible to build vδE
-	// release the lock while building
+	// release the lock while building to allow simultaneous access to other files
 	job = &_RebuildJob{ready: make(chan struct{})}
 	δftail.rebuildJob = job
 	δFtail.trackNew.Del(foid)