fs/ufs/lufs_log.c

352 inval_range(ml_unit_t *ul, cirbuf_t *cb, off_t lof, off_t nb)
355 	off_t		elof	= lof + nb;
360 	 * discard all bufs that overlap the range (lof, lof + nb)
486 	size_t	nb;
509 	while ((nb = bufsize) != 0) {
510 		if (nb > blksize)
511 			nb = blksize;
517 		bp->b_bufsize = nb;
526 		bufsize -= nb;
527 		va += nb;
739 storebuf(ml_unit_t *ul, buf_t *bp, caddr_t va, size_t nb)
744 	size_t		nb_left = nb;
772 			return (nb - nb_left);
780 				return (nb - nb_left);
788 	return (nb);
968 	off_t	nb;
974 	 * round nb up to a sector length plus an extra sector
978 	for (nb = DEV_BSIZE; me; me = me->me_hash) {
979 		nb += sizeof (struct delta);
981 			nb += me->me_nb;
983 	nb = P2ROUNDUP(nb, DEV_BSIZE);
991 	return (nb < nfb);
999 	size_t		nb;
1006 	nb = sizeof (struct delta);
1010 	while (nb) {
1015 		actual = storebuf(ul, bp, va, nb);
1018 		nb -= actual;
1019 		if (nb)
1039 	nb = me->me_nb;
1046 	while (nb) {
1051 		actual = storebuf(ul, bp, va, nb);
1054 		nb -= actual;
1055 		if (nb)
1082  * seek nb bytes from location lof
1085 logseek(ml_unit_t *ul, off_t lof, size_t nb, off_t *lofp)
1090 	while (nb) {
1096 		actual = fetchbuf(ul, bp, NULL, nb, &lof);
1098 		nb -= actual;
1101 	ASSERT(nb == 0);
1110 	off_t nb,		/* length of buffer */
1121 	caddr_t	eva	= va + nb;	/* end of buffer */
1138 				    MIN(nb, crb->c_nb - skip));
1146 				    MIN(crb->c_nb, nb - skip));
1156 			fetchzeroes(va, mof, nb, me);
1231 	off_t		nb;
1273 		nb = new_lof - ul->un_head_lof;
1274 		inval_range(ul, &ul->un_wrbuf, ul->un_head_lof, nb);
1275 		inval_range(ul, &ul->un_rdbuf, ul->un_head_lof, nb);
1281 		nb = ul->un_eol_lof - ul->un_head_lof;
1282 		inval_range(ul, &ul->un_wrbuf, ul->un_head_lof, nb);
1283 		inval_range(ul, &ul->un_rdbuf, ul->un_head_lof, nb);
1289 		nb = new_lof - ul->un_bol_lof;
1290 		inval_range(ul, &ul->un_wrbuf, ul->un_bol_lof, nb);
1291 		inval_range(ul, &ul->un_rdbuf, ul->un_bol_lof, nb);
1320  * The tail will be set to the sector following lof+nb
1321  *	lof + nb == size of the last delta + commit record
1325 ldl_settail(ml_unit_t *ul, off_t lof, size_t nb)
1349 	(void) logseek(ul, lof, nb, &new_lof);
1438 ldl_logscan_read(ml_unit_t *ul, off_t *lofp, size_t nb, caddr_t va)
1449 		if (!WITHIN(*lofp, nb, ul->un_head_lof,
1454 		if (OVERLAP(*lofp, nb, ul->un_tail_lof,
1460 	while (nb) {
1477 		actual = fetchbuf(ul, bp, va, nb, lofp);
1480 		nb -= actual;
1547 	off_t	nb;
1556 	nb = ul->un_logsize;
1569 	return (busybytes > (nb - (nb >> 2)));