This is the result of my experimentation with trying to do union-mounts like semantics with a filesystem. The implementation is far from perfect, but I think the concept does sort of work. See the patch header for the union filesystem. VFS modifications necessary to make it work: - allow f_op->open() to return a different file - pass dentry to i_op->permission() instead of inode - hack to vfs_rename() to allow rename to same inode Git tree is here: git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git union-hybrid Thanks, Miklos -- -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html