blob: 58423888b736ea5f552db296d5676b5643969027 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
// 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;
}
|
