// SPDX-License-Identifier: GPL-2.0 #include "alloc_cache.h" void io_alloc_cache_free(struct io_alloc_cache *cache,			 void (*free)(const void *)){	void *entry; 	if (!cache->entries)		return; 	while ((entry = io_alloc_cache_get(cache)) != NULL)		free(entry); 	kvfree(cache->entries);	cache->entries = NULL;} /* returns false if the cache was initialized properly */bool io_alloc_cache_init(struct io_alloc_cache *cache,			 unsigned max_nr, unsigned int size,			 unsigned int init_bytes){	cache->entries = kvmalloc_array(max_nr, sizeof(void *), GFP_KERNEL);	if (!cache->entries)		return true; 	cache->nr_cached = 0;	cache->max_cached = max_nr;	cache->elem_size = size;	cache->init_clear = init_bytes;	return false;} void *io_cache_alloc_new(struct io_alloc_cache *cache, gfp_t gfp){	void *obj; 	obj = kmalloc(cache->elem_size, gfp);	if (obj && cache->init_clear)		memset(obj, 0, cache->init_clear);	return obj;}