25 static void poison_error(mempool_t *pool, void *element, size_t size,  in poison_error()  argument
33 	pr_err("BUG: mempool element poison mismatch\n");  in poison_error()
35 	pr_err(" nr=%d @ %p: %s0x", nr, element, start > 0 ? "... " : "");  in poison_error()
37 		pr_cont("%x ", *(u8 *)(element + i));  in poison_error()
42 static void __check_element(mempool_t *pool, void *element, size_t size)  in __check_element()  argument
44 	u8 *obj = element;  in __check_element()
51 			poison_error(pool, element, size, i);  in __check_element()
58 static void check_element(mempool_t *pool, void *element)  in check_element()  argument
62 		__check_element(pool, element, ksize(element));  in check_element()
66 		void *addr = kmap_atomic((struct page *)element);  in check_element()
73 static void __poison_element(void *element, size_t size)  in __poison_element()  argument
75 	u8 *obj = element;  in __poison_element()
81 static void poison_element(mempool_t *pool, void *element)  in poison_element()  argument
85 		__poison_element(element, ksize(element));  in poison_element()
89 		void *addr = kmap_atomic((struct page *)element);  in poison_element()
96 static inline void check_element(mempool_t *pool, void *element)  in check_element()  argument
99 static inline void poison_element(mempool_t *pool, void *element)  in poison_element()  argument
104 static __always_inline void kasan_poison_element(mempool_t *pool, void *element)  in kasan_poison_element()  argument
107 		kasan_poison_kfree(element, _RET_IP_);  in kasan_poison_element()
109 		kasan_free_pages(element, (unsigned long)pool->pool_data);  in kasan_poison_element()
112 static void kasan_unpoison_element(mempool_t *pool, void *element)  in kasan_unpoison_element()  argument
115 		kasan_unpoison_slab(element);  in kasan_unpoison_element()
117 		kasan_alloc_pages(element, (unsigned long)pool->pool_data);  in kasan_unpoison_element()
120 static __always_inline void add_element(mempool_t *pool, void *element)  in add_element()  argument
123 	poison_element(pool, element);  in add_element()
124 	kasan_poison_element(pool, element);  in add_element()
125 	pool->elements[pool->curr_nr++] = element;  in add_element()
130 	void *element = pool->elements[--pool->curr_nr];  in remove_element()  local
133 	kasan_unpoison_element(pool, element);  in remove_element()
134 	check_element(pool, element);  in remove_element()
135 	return element;  in remove_element()
152 		void *element = remove_element(pool);  in mempool_exit()  local
153 		pool->free(element, pool->pool_data);  in mempool_exit()
198 		void *element;  in mempool_init_node()  local
200 		element = pool->alloc(gfp_mask, pool->pool_data);  in mempool_init_node()
201 		if (unlikely(!element)) {  in mempool_init_node()
205 		add_element(pool, element);  in mempool_init_node()
217  * @alloc_fn:  user-defined element-allocation function.
218  * @free_fn:   user-defined element-freeing function.
239  * @alloc_fn:  user-defined element-allocation function.
240  * @free_fn:   user-defined element-freeing function.
299 	void *element;  in mempool_resize()  local
309 			element = remove_element(pool);  in mempool_resize()
311 			pool->free(element, pool->pool_data);  in mempool_resize()
340 		element = pool->alloc(GFP_KERNEL, pool->pool_data);  in mempool_resize()
341 		if (!element)  in mempool_resize()
345 			add_element(pool, element);  in mempool_resize()
348 			pool->free(element, pool->pool_data);	/* Raced */  in mempool_resize()
360  * mempool_alloc - allocate an element from a specific memory pool
371  * Return: pointer to the allocated element or %NULL on error.
375 	void *element;  in mempool_alloc()  local
391 	element = pool->alloc(gfp_temp, pool->pool_data);  in mempool_alloc()
392 	if (likely(element != NULL))  in mempool_alloc()
393 		return element;  in mempool_alloc()
397 		element = remove_element(pool);  in mempool_alloc()
405 		kmemleak_update_trace(element);  in mempool_alloc()
406 		return element;  in mempool_alloc()
425 	/* Let's wait for someone else to return an element to @pool */  in mempool_alloc()
443  * mempool_free - return an element to the pool.
444  * @element:   pool element pointer.
450 void mempool_free(void *element, mempool_t *pool)  in mempool_free()  argument
454 	if (unlikely(element == NULL))  in mempool_free()
459 	 * for @element and the following @pool->curr_nr.  This ensures  in mempool_free()
461 	 * allocation of @element.  This is necessary for fringe cases  in mempool_free()
462 	 * where @element was passed to this task without going through  in mempool_free()
480 	 * allocation of @element, any task which decremented curr_nr below  in mempool_free()
483 	 * to min_nr after the allocation of @element, the elements  in mempool_free()
493 			add_element(pool, element);  in mempool_free()
500 	pool->free(element, pool->pool_data);  in mempool_free()
515 void mempool_free_slab(void *element, void *pool_data)  in mempool_free_slab()  argument
518 	kmem_cache_free(mem, element);  in mempool_free_slab()
533 void mempool_kfree(void *element, void *pool_data)  in mempool_kfree()  argument
535 	kfree(element);  in mempool_kfree()
550 void mempool_free_pages(void *element, void *pool_data)  in mempool_free_pages()  argument
553 	__free_pages(element, order);  in mempool_free_pages()