983     extent_t **extent, extent_t **lead, extent_t **trail,  in extent_split_interior()  argument
998 	*trail = NULL;  in extent_split_interior()
1017 		*trail = extent_split_impl(tsdn, arena, r_extent_hooks, *extent,  in extent_split_interior()
1020 		if (*trail == NULL) {  in extent_split_interior()
1062 	extent_t *trail;  in extent_recycle_split()  local
1067 	    tsdn, arena, r_extent_hooks, rtree_ctx, &extent, &lead, &trail,  in extent_recycle_split()
1077 		assert(to_leak != NULL && lead == NULL && trail == NULL);  in extent_recycle_split()
1086 		if (trail != NULL) {  in extent_recycle_split()
1087 			extent_deactivate(tsdn, arena, extents, trail);  in extent_recycle_split()
1369 	extent_t *trail;  in extent_grow_retained()  local
1373 	    tsdn, arena, r_extent_hooks, rtree_ctx, &extent, &lead, &trail,  in extent_grow_retained()
1382 		if (trail != NULL) {  in extent_grow_retained()
1384 			    &arena->extents_retained, trail, true);  in extent_grow_retained()
2106 	extent_t *trail = extent_alloc(tsdn, arena);  in extent_split_impl()  local
2107 	if (trail == NULL) {  in extent_split_impl()
2111 	extent_init(trail, arena, (void *)((uintptr_t)extent_base_get(extent) +  in extent_split_impl()
2133 	extent_rtree_leaf_elms_lookup(tsdn, rtree_ctx, trail, false, true,  in extent_split_impl()
2141 	extent_lock2(tsdn, extent, trail);  in extent_split_impl()
2161 	extent_rtree_write_acquired(tsdn, trail_elm_a, trail_elm_b, trail,  in extent_split_impl()
2164 	extent_unlock2(tsdn, extent, trail);  in extent_split_impl()
2166 	return trail;  in extent_split_impl()
2168 	extent_unlock2(tsdn, extent, trail);  in extent_split_impl()
2170 	extent_dalloc(tsdn, arena, trail);  in extent_split_impl()