ovl_create_temp
temp = ovl_create_temp(ofs, indexdir, OVL_CATTR(S_IFDIR | 0));
temp = ovl_create_temp(ofs, c->workdir, &cattr);
opaquedir = ovl_create_temp(ofs, workdir, OVL_CATTR(stat.mode));
newdentry = ovl_create_temp(ofs, workdir, cattr);
struct dentry *ovl_create_temp(struct ovl_fs *ofs, struct dentry *workdir,
temp = ovl_create_temp(ofs, workdir, OVL_CATTR(S_IFREG | 0));