db/mp/mp_fopen.c

501 	BH *bhp, *nbhp;
524 	for (bhp = SH_TAILQ_FIRST(&mp->bhq, __bh); bhp != NULL; bhp = nbhp) {
525 		nbhp = SH_TAILQ_NEXT(bhp, q, __bh);
529 		if (F_ISSET(bhp, BH_DIRTY))
533 			    (u_long)bhp->pgno, (u_long)bhp->ref);
536 		if (bhp->mf_offset == mf_offset) {
537 			if (F_ISSET(bhp, BH_DIRTY)) {
541 			__memp_bhfree(dbmp, mfp, bhp, 0);
542 			SH_TAILQ_INSERT_HEAD(&mp->bhfq, bhp, q, __bh);