#define F_GROUP(f) REQ_EXTRA(f, preserve_gid)->unum
#define F_ACL(f) REQ_EXTRA(f, preserve_acls)->num
#define F_XATTR(f) REQ_EXTRA(f, preserve_xattrs)->num
#define F_GROUP(f) REQ_EXTRA(f, preserve_gid)->unum
#define F_ACL(f) REQ_EXTRA(f, preserve_acls)->num
#define F_XATTR(f) REQ_EXTRA(f, preserve_xattrs)->num