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bcache: use flexible arrays

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Cleanup, allocate whole struct with a single malloc call.
This commit is contained in:
Zdenek Kabelac 2020-09-30 23:28:44 +02:00
parent b3c7a2b3f0
commit b44db5d1a7
1 changed files with 3 additions and 10 deletions
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13
lib/device/bcache.c
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@ -66,23 +66,17 @@ struct control_block {
struct cb_set { struct cb_set {
struct dm_list free; struct dm_list free;
struct dm_list allocated; struct dm_list allocated;
struct control_block *vec; struct control_block vec[];
} control_block_set; } control_block_set;
static struct cb_set *_cb_set_create(unsigned nr) static struct cb_set *_cb_set_create(unsigned nr)
{ {
unsigned i; unsigned i;
struct cb_set *cbs = malloc(sizeof(*cbs)); struct cb_set *cbs = malloc(sizeof(*cbs) + nr * sizeof(*cbs->vec));
if (!cbs) if (!cbs->vec)
return NULL; return NULL;
cbs->vec = malloc(nr * sizeof(*cbs->vec));
if (!cbs->vec) {
free(cbs);
return NULL;
}
dm_list_init(&cbs->free); dm_list_init(&cbs->free);
dm_list_init(&cbs->allocated); dm_list_init(&cbs->allocated);
@ -102,7 +96,6 @@ static void _cb_set_destroy(struct cb_set *cbs)
return; return;
} }
free(cbs->vec);
free(cbs); free(cbs);
} }