2289 vm_object_coalesce(vm_object_t prev_object, vm_ooffset_t prev_offset,  in vm_object_coalesce()  argument
2294 	if (prev_object == NULL)  in vm_object_coalesce()
2296 	if ((prev_object->flags & OBJ_ANON) == 0)  in vm_object_coalesce()
2299 	VM_OBJECT_WLOCK(prev_object);  in vm_object_coalesce()
2303 	vm_object_collapse(prev_object);  in vm_object_coalesce()
2310 	if (prev_object->backing_object != NULL) {  in vm_object_coalesce()
2311 		VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2319 	if (prev_object->ref_count > 1 &&  in vm_object_coalesce()
2320 	    prev_object->size != next_pindex &&  in vm_object_coalesce()
2321 	    (prev_object->flags & OBJ_ONEMAPPING) == 0) {  in vm_object_coalesce()
2322 		VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2329 	if (prev_object->cred != NULL) {  in vm_object_coalesce()
2341 		    prev_object->cred)) {  in vm_object_coalesce()
2342 			VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()
2345 		prev_object->charge += ptoa(next_size);  in vm_object_coalesce()
2352 	if (next_pindex < prev_object->size) {  in vm_object_coalesce()
2353 		vm_object_page_remove(prev_object, next_pindex, next_pindex +  in vm_object_coalesce()
2356 		if (prev_object->cred != NULL) {  in vm_object_coalesce()
2357 			KASSERT(prev_object->charge >=  in vm_object_coalesce()
2358 			    ptoa(prev_object->size - next_pindex),  in vm_object_coalesce()
2359 			    ("object %p overcharged 1 %jx %jx", prev_object,  in vm_object_coalesce()
2361 			prev_object->charge -= ptoa(prev_object->size -  in vm_object_coalesce()
2370 	if (next_pindex + next_size > prev_object->size)  in vm_object_coalesce()
2371 		prev_object->size = next_pindex + next_size;  in vm_object_coalesce()
2373 	VM_OBJECT_WUNLOCK(prev_object);  in vm_object_coalesce()