.

wcfs/wcfs.go

@@ -813,7 +813,7 @@ retry:
 	// find out which files need to be invalidated due to index change
 	// XXX no indexMu lock needed because head is Locked
 	//fmt.Printf("\nbtreeChangev: %v\n", btreeChangev)
-	δF := bfdir.δFtail.Update(δZ)
+	δF := bfdir.δFtail.Update(δZ, zhead)
 	//fmt.Printf("xfiles: %v\n", xfiles)
 	for file, δfile := range δF.Change {
 		finv, ok := toinvalidate[file]

wcfs/δftail.go

@@ -162,7 +162,11 @@ func (δFtail *ΔFtail) Track(file *BigFile, blk int64, path []btree.LONode, zbl
 // It returns change in files space that corresponds to δZ.
 //
 // δZ should include all objects changed by ZODB transaction.
-func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit) ΔF {
+//
+// Zhead must be active connection at δFtail.Head() database state.
+// Objects in Zhead must not be modified.
+// During call to Update zhead must not be otherwise used - even for reading.
+func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit, zhead *ZConn) ΔF {
 	δB := δFtail.δBtail.Update(δZ)
 	δF := ΔF{Rev: δB.Rev, Change: make(map[*BigFile]SetI64)}
 
@@ -189,8 +193,7 @@ func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit) ΔF {
 	// take zblk changes into account
 	for _, oid := range δZ.Changev {
 		// XXX cache lock/unlock
-		var zcache *zodb.LiveCache	// XXX stub
-		obj := zcache.Get(oid)
+		obj := zhead.Cache().Get(oid)
 		if obj == nil {
 			//fmt.Printf("%s: not in cache\n", oid)
 			continue // nothing to do - see invariant
@@ -199,9 +202,6 @@ func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit) ΔF {
 		//fmt.Printf("%s:     in cache (%s)\n", oid, typeOf(obj))
 
 		switch obj := obj.(type) {
-		default:
-			continue // object not related to any bigfile
-
 		case zBlk:	// ZBlk*
 			// z.infile locking: since we write-locked head.zconnMu
 			// - no other fuse reads are running, and thus no one
@@ -217,6 +217,8 @@ func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit) ΔF {
 				δfile.Update(blocks)
 			}
 
+			// XXX update z.infile according to btree changes
+
 		case *ZBigFile:
 			// XXX check that .blksize and .blktab (it is only
 			// persistent reference) do not change.