78  * slob_block has a field 'units', which indicates size of block if +ve,
92 	slobidx_t units;  member
152 		s[0].units = size;  in set_slob()
153 		s[1].units = offset;  in set_slob()
155 		s[0].units = -offset;  in set_slob()
163 	if (s->units > 0)  in slob_units()
164 		return s->units;  in slob_units()
176 	if (s[0].units < 0)  in slob_next()
177 		next = -s[0].units;  in slob_next()
179 		next = s[1].units;  in slob_next()
241 	int delta = 0, units = SLOB_UNITS(size);  in slob_page_alloc()  local
260 		if (avail >= units + delta) { /* room enough? */  in slob_page_alloc()
273 			if (avail == units) { /* exact fit? unlink. */  in slob_page_alloc()
280 					set_slob(prev, slob_units(prev), cur + units);  in slob_page_alloc()
282 					sp->freelist = cur + units;  in slob_page_alloc()
283 				set_slob(cur + units, avail - units, next);  in slob_page_alloc()
286 			sp->units -= units;  in slob_page_alloc()
287 			if (!sp->units) {  in slob_page_alloc()
330 		if (sp->units < SLOB_UNITS(size))  in slob_alloc()
365 		sp->units = SLOB_UNITS(PAGE_SIZE);  in slob_alloc()
386 	slobidx_t units;  in slob_free()  local
395 	units = SLOB_UNITS(size);  in slob_free()
399 	if (sp->units + units == SLOB_UNITS(PAGE_SIZE)) {  in slob_free()
412 		sp->units = units;  in slob_free()
414 		set_slob(b, units,  in slob_free()
431 	sp->units += units;  in slob_free()
434 		if (b + units == sp->freelist) {  in slob_free()
435 			units += slob_units(sp->freelist);  in slob_free()
438 		set_slob(b, units, sp->freelist);  in slob_free()
448 		if (!slob_last(prev) && b + units == next) {  in slob_free()
449 			units += slob_units(next);  in slob_free()
450 			set_slob(b, units, slob_next(next));  in slob_free()
452 			set_slob(b, units, next);  in slob_free()
455 			units = slob_units(b) + slob_units(prev);  in slob_free()
456 			set_slob(prev, units, slob_next(b));  in slob_free()