diff --git a/weed/filesys/dirty_page.go b/weed/filesys/dirty_page.go
index 9e8ec1702..bfb417ea9 100644
--- a/weed/filesys/dirty_page.go
+++ b/weed/filesys/dirty_page.go
@@ -172,11 +172,11 @@ func min(x, y int64) int64 {
 	return y
 }
 
-func (pages *ContinuousDirtyPages) ReadDirtyData(data []byte, startOffset int64) (maxStop int64) {
+func (pages *ContinuousDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
 
 	pages.lock.Lock()
 	defer pages.lock.Unlock()
 
-	return pages.intervals.ReadData(data, startOffset)
+	return pages.intervals.ReadDataAt(data, startOffset)
 
 }
diff --git a/weed/filesys/dirty_page_interval.go b/weed/filesys/dirty_page_interval.go
index 10b74bb68..afa2755ed 100644
--- a/weed/filesys/dirty_page_interval.go
+++ b/weed/filesys/dirty_page_interval.go
@@ -185,7 +185,7 @@ func (c *ContinuousIntervals) removeList(target *IntervalLinkedList) {
 
 }
 
-func (c *ContinuousIntervals) ReadData(data []byte, startOffset int64) (maxStop int64) {
+func (c *ContinuousIntervals) ReadDataAt(data []byte, startOffset int64) (maxStop int64) {
 	for _, list := range c.lists {
 		start := max(startOffset, list.Offset())
 		stop := min(startOffset+int64(len(data)), list.Offset()+list.Size())
diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index a40135b42..c3d49b16b 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -80,7 +80,7 @@ func (fh *FileHandle) Read(ctx context.Context, req *fuse.ReadRequest, resp *fus
 }
 
 func (fh *FileHandle) readFromDirtyPages(buff []byte, startOffset int64) (maxStop int64) {
-	return fh.dirtyPages.ReadDirtyData(buff, startOffset)
+	return fh.dirtyPages.ReadDirtyDataAt(buff, startOffset)
 }
 
 func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {