63 		       size_t to_alloc, size_t *prev_tail, size_t *b_pos,  in wnd_scan()  argument
72 			if (*b_len < *prev_tail) {  in wnd_scan()
73 				*b_pos = wbit - *prev_tail;  in wnd_scan()
74 				*b_len = *prev_tail;  in wnd_scan()
77 			*prev_tail = 0;  in wnd_scan()
83 			if (*b_len < *prev_tail) {  in wnd_scan()
84 				*b_pos = wbit - *prev_tail;  in wnd_scan()
85 				*b_len = *prev_tail;  in wnd_scan()
88 			*prev_tail = 0;  in wnd_scan()
94 		end = wpos + to_alloc - *prev_tail;  in wnd_scan()
97 		free_len = *prev_tail + free_bits - wpos;  in wnd_scan()
100 			*b_pos = wbit + wpos - *prev_tail;  in wnd_scan()
105 			return wbit + wpos - *prev_tail;  in wnd_scan()
108 			*prev_tail += free_bits - wpos;  in wnd_scan()
114 		*prev_tail = 0;  in wnd_scan()
500 	size_t prev_tail = 0;  in wnd_rescan()  local
526 				if (prev_tail) {  in wnd_rescan()
528 							 vbo * 8 - prev_tail,  in wnd_rescan()
529 							 prev_tail, true);  in wnd_rescan()
530 					prev_tail = 0;  in wnd_rescan()
536 				prev_tail += wbits;  in wnd_rescan()
577 			if (used > wpos && prev_tail) {  in wnd_rescan()
578 				wnd_add_free_ext(wnd, wbit + wpos - prev_tail,  in wnd_rescan()
579 						 prev_tail, true);  in wnd_rescan()
580 				prev_tail = 0;  in wnd_rescan()
587 				prev_tail = 0;  in wnd_rescan()
594 				prev_tail += frb - wpos;  in wnd_rescan()
598 			wnd_add_free_ext(wnd, wbit + wpos - prev_tail,  in wnd_rescan()
599 					 frb + prev_tail - wpos, true);  in wnd_rescan()
604 			prev_tail = 0;  in wnd_rescan()
621 	if (prev_tail)  in wnd_rescan()
622 		wnd_add_free_ext(wnd, wnd->nbits - prev_tail, prev_tail, true);  in wnd_rescan()
993 	size_t iw, prev_tail, nwnd, wbit, ebit, zbit, zend;  in wnd_find()  local
1151 	prev_tail = 0;  in wnd_find()
1167 			if (prev_tail > b_len) {  in wnd_find()
1168 				b_pos = wbit - prev_tail;  in wnd_find()
1169 				b_len = prev_tail;  in wnd_find()
1173 			prev_tail = 0;  in wnd_find()
1205 					prev_tail = 0;  in wnd_find()
1215 					prev_tail = 0;  in wnd_find()
1225 						       &prev_tail, &b_pos,  in wnd_find()
1233 				prev_tail = 0;  in wnd_find()
1239 						       to_alloc, &prev_tail,  in wnd_find()
1256 			if (prev_tail + wbits >= to_alloc) {  in wnd_find()
1257 				fnd = wbit + wpos - prev_tail;  in wnd_find()
1262 			prev_tail += wbits;  in wnd_find()
1271 			prev_tail = 0;  in wnd_find()
1278 			       &prev_tail, &b_pos, &b_len);  in wnd_find()
1284 	if (b_len < prev_tail) {  in wnd_find()
1286 		b_len = prev_tail;  in wnd_find()
1287 		b_pos = max_alloc - prev_tail;  in wnd_find()