Index: /trunk/src/VBox/Additions/linux/sharedfolders/utils.c
===================================================================
--- /trunk/src/VBox/Additions/linux/sharedfolders/utils.c	(revision 23620)
+++ /trunk/src/VBox/Additions/linux/sharedfolders/utils.c	(revision 23621)
@@ -152,5 +152,6 @@
         inode->i_blkbits = 12;
 #endif
-        inode->i_blocks = (info->cbObject + 4095) / 4096;
+        /* i_blocks always in units of 512 bytes! */
+        inode->i_blocks = (info->cbAllocated + 511) / 512;
 
         sf_ftime_from_timespec (&inode->i_atime, &info->AccessTime);