fs/ext2fs/ext2_alloc.c

650 	char *bbp;
674 	bbp = (char *)bp->b_data;
683 		if (isclr(bbp, bpref)) {
703 		if (bbp[loc] == (char)0xff) {
710 			bit = fls(bbp[loc]);
713 		} else if (bbp[loc] == 0) {
721 			bit = ffs(bbp[loc]) - 1;
729 			bit = fls(bbp[loc]);
746 	bno = ext2_mapsearch(fs, bbp, bpref);
754 	if (isset(bbp, bno)) {
760 	setbit(bbp, bno);
762 	ext2_clusteracct(fs, bbp, cg, bno, -1);
780 	char *bbp;
798 	bbp = (char *)bp->b_data;
832 		if ((bbp[loc] & bit) != 0)
852 		if (!isclr(bbp, got - run + i))
861 		setbit(bbp, bno + i);
862 		ext2_clusteracct(fs, bbp, cg, bno + i, -1);
965 	char *bbp;
983 	bbp = (char *)bp->b_data;
985 	if (isclr(bbp, bno)) {
990 	clrbit(bbp, bno);
992 	ext2_clusteracct(fs, bbp, cg, bno, 1);
1058 ext2_mapsearch(struct m_ext2fs *fs, char *bbp, daddr_t bpref)
1072 	loc = memcchr(&bbp[start], 0xff, len);
1076 		loc = memcchr(&bbp[start], 0xff, len);
1084 	return ((loc - bbp) * NBBY + ffs(~*loc) - 1);