2245 vm_object_coalesce(vm_object_t prev_object, vm_ooffset_t prev_offset,  in vm_object_coalesce()  argument
2250 	if (prev_object == NULL)  in vm_object_coalesce()
2252 	if ((prev_object->flags & OBJ_ANON) == 0)  in vm_object_coalesce()
2255 	VM_OBJECT_WLOCK(prev_object);  in vm_object_coalesce()
2259 	vm_object_collapse(prev_object);  in vm_object_coalesce()
2266 	if (prev_object->backing_object != NULL) {  in vm_object_coalesce()
2267 		VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2275 	if (prev_object->ref_count > 1 &&  in vm_object_coalesce()
2276 	    prev_object->size != next_pindex &&  in vm_object_coalesce()
2277 	    (prev_object->flags & OBJ_ONEMAPPING) == 0) {  in vm_object_coalesce()
2278 		VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2285 	if (prev_object->cred != NULL) {  in vm_object_coalesce()
2297 		    prev_object->cred)) {  in vm_object_coalesce()
2298 			VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2301 		prev_object->charge += ptoa(next_size);  in vm_object_coalesce()
2308 	if (next_pindex < prev_object->size) {  in vm_object_coalesce()
2309 		vm_object_page_remove(prev_object, next_pindex, next_pindex +  in vm_object_coalesce()
2312 		if (prev_object->cred != NULL) {  in vm_object_coalesce()
2313 			KASSERT(prev_object->charge >=  in vm_object_coalesce()
2314 			    ptoa(prev_object->size - next_pindex),  in vm_object_coalesce()
2315 			    ("object %p overcharged 1 %jx %jx", prev_object,  in vm_object_coalesce()
2317 			prev_object->charge -= ptoa(prev_object->size -  in vm_object_coalesce()
2326 	if (next_pindex + next_size > prev_object->size)  in vm_object_coalesce()
2327 		prev_object->size = next_pindex + next_size;  in vm_object_coalesce()
2329 	VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()