2173 vm_object_coalesce(vm_object_t prev_object, vm_ooffset_t prev_offset,  in vm_object_coalesce()  argument
2178 	if (prev_object == NULL)  in vm_object_coalesce()
2180 	if ((prev_object->flags & OBJ_ANON) == 0)  in vm_object_coalesce()
2183 	VM_OBJECT_WLOCK(prev_object);  in vm_object_coalesce()
2187 	vm_object_collapse(prev_object);  in vm_object_coalesce()
2194 	if (prev_object->backing_object != NULL) {  in vm_object_coalesce()
2195 		VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2203 	if (prev_object->ref_count > 1 &&  in vm_object_coalesce()
2204 	    prev_object->size != next_pindex &&  in vm_object_coalesce()
2205 	    (prev_object->flags & OBJ_ONEMAPPING) == 0) {  in vm_object_coalesce()
2206 		VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2215 	if (prev_object->cred != NULL && (cflags & OBJCO_NO_CHARGE) == 0) {  in vm_object_coalesce()
2226 		if (next_end > prev_object->size) {  in vm_object_coalesce()
2227 			vm_size_t charge = ptoa(next_end - prev_object->size);  in vm_object_coalesce()
2231 				    prev_object->cred)) {  in vm_object_coalesce()
2232 					VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2235 			} else if (prev_object->size > next_pindex) {  in vm_object_coalesce()
2243 				swap_release_by_cred(ptoa(prev_object->size -  in vm_object_coalesce()
2244 				    next_pindex), prev_object->cred);  in vm_object_coalesce()
2253 			    prev_object->cred);  in vm_object_coalesce()
2261 	if (next_pindex < prev_object->size)  in vm_object_coalesce()
2262 		vm_object_page_remove(prev_object, next_pindex, next_end, 0);  in vm_object_coalesce()
2267 	if (next_end > prev_object->size)  in vm_object_coalesce()
2268 		prev_object->size = next_end;  in vm_object_coalesce()
2279 		pidx = swap_pager_seek_data(prev_object, next_pindex);  in vm_object_coalesce()
2282 		    prev_object, pidx, (uintmax_t)prev_offset,  in vm_object_coalesce()
2287 	VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()