bsd/hfs/hfs_vnops.c

4505 	directoryhint_t *dirhint = NULL;
4543 	/* Note that the dirhint calls require an exclusive lock. */
4661 				dirhint = &localhint;  /* don't forget to release the descriptor */
4669 	if (dirhint == NULL) {
4670 		dirhint = hfs_getdirhint(cp, ((index - 1) & HFS_INDEX_MASK) | tag, 0);
4673 		dirhint->dh_index &= HFS_INDEX_MASK;
4674 		if (dirhint->dh_index == HFS_INDEX_MASK) {
4675 			dirhint->dh_index = -1;
4680 		dirhint->dh_threadhint = cp->c_dirthreadhint;
4688 		 * code at the end of the function will release the dirhint for us.
4692 		if (dirhint->dh_desc.cd_flags & CD_EOF) {
4703 	error = cat_getdirentries(hfsmp, cp->c_entries, dirhint, uio, ap->a_flags, &items, &eofflag);
4706 		cp->c_dirthreadhint = dirhint->dh_threadhint;
4726 	dirhint->dh_index |= tag;
4742 	if ((dirhint != NULL) &&
4743 	    (dirhint != &localhint) &&
4745 		hfs_reldirhint(cp, dirhint);
4751 	if (dirhint == &localhint) {