From c141246e7c17cfbfb5454337c213f200ff4caefd Mon Sep 17 00:00:00 2001
From: Alex Yatskov <alex@foosoft.net>
Date: Tue, 16 Jun 2015 17:34:10 +0900
Subject: [PATCH] Cleanup

---
 dir.go     | 8 +++-----
 node.go    | 8 +++++++-
 version.go | 9 +--------
 3 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/dir.go b/dir.go
index e99f71e..bbacb79 100644
--- a/dir.go
+++ b/dir.go
@@ -41,7 +41,6 @@ type versionedDir struct {
 	node   *versionedNode
 	inode  uint64
 	parent *versionedDir
-	dirty  bool
 }
 
 func newVersionedDir(node *versionedNode, parent *versionedDir) *versionedDir {
@@ -50,12 +49,11 @@ func newVersionedDir(node *versionedNode, parent *versionedDir) *versionedDir {
 		files:  make(map[string]*versionedFile),
 		node:   node,
 		inode:  allocInode(),
-		parent: parent,
-		dirty:  false}
+		parent: parent}
 }
 
 func (this *versionedDir) version() error {
-	if this.dirty {
+	if this.node.flags&NodeModified == NodeModified {
 		return nil
 	}
 
@@ -71,8 +69,8 @@ func (this *versionedDir) version() error {
 		return err
 	}
 
+	node.flags |= NodeModified
 	this.node = node
-	this.dirty = true
 
 	return nil
 }
diff --git a/node.go b/node.go
index 4cc8e27..ec1f16a 100644
--- a/node.go
+++ b/node.go
@@ -33,11 +33,17 @@ import (
 //	versionedNode
 //
 
+const (
+	NodeModified = 1 << iota
+	NodeDeleted
+)
+
 type versionedNode struct {
 	path   string
 	info   os.FileInfo
 	ver    *version
 	parent *versionedNode
+	flags  uint
 }
 
 type versionedNodeMap map[string]*versionedNode
@@ -52,7 +58,7 @@ func newVersionedNode(path string, ver *version, parent *versionedNode) (*versio
 }
 
 func newVersionedNodeStat(path string, ver *version, parent *versionedNode, info os.FileInfo) *versionedNode {
-	return &versionedNode{path, info, ver, parent}
+	return &versionedNode{path, info, ver, parent, 0}
 }
 
 func (this *versionedNode) setAttr(req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
diff --git a/version.go b/version.go
index 2c77dab..5129431 100644
--- a/version.go
+++ b/version.go
@@ -55,14 +55,7 @@ func newVersion(base string, timestamp time.Time, db *database, parent *version)
 		return nil, err
 	}
 
-	ver := &version{
-		base:      base,
-		parent:    parent,
-		timestamp: timestamp,
-		meta:      meta,
-		db:        db}
-
-	return ver, nil
+	return &version{base, parent, timestamp, meta, nil, db}, nil
 }
 
 func (this *version) scanDir(path string) (versionedNodeMap, error) {