70  * Initialize the shadow for existing mappings during kernel initialization.
86 	/* Allocate shadow for .data */  in kmsan_init_shadow()
100 	struct page *shadow, *origin;  member
109  * time with a certain order, it is reserved as a shadow block, for the second
111  * shadow and origin ranges from the previously saved shadow and origin blocks,
119 	struct page *shadow, *origin;  in kmsan_memblock_free_pages()  local
121 	if (!held_back[order].shadow) {  in kmsan_memblock_free_pages()
122 		held_back[order].shadow = page;  in kmsan_memblock_free_pages()
129 	shadow = held_back[order].shadow;  in kmsan_memblock_free_pages()
131 	kmsan_setup_meta(page, shadow, origin, order);  in kmsan_memblock_free_pages()
133 	held_back[order].shadow = NULL;  in kmsan_memblock_free_pages()
171 	struct page *page, *shadow, *origin;  in do_collection()  local
175 		shadow = smallstack_pop(&collect);  in do_collection()
177 		kmsan_setup_meta(page, shadow, origin, collect.order);  in do_collection()
208 	 *  - push held_back[N].shadow and .origin to @collect;  in kmsan_memblock_discard()
211 	 *    - use two of them as shadow and origin for the third one;  in kmsan_memblock_discard()
219 		if (held_back[i].shadow)  in kmsan_memblock_discard()
220 			smallstack_push(&collect, held_back[i].shadow);  in kmsan_memblock_discard()
223 		held_back[i].shadow = NULL;  in kmsan_memblock_discard()