static void deactivate_swap_slots_cache(void);
static void reactivate_swap_slots_cache(void);
-#define use_swap_slot_cache (swap_slot_cache_active && \
- swap_slot_cache_enabled && swap_slot_cache_initialized)
+#define use_swap_slot_cache (swap_slot_cache_active && swap_slot_cache_enabled)
#define SLOTS_CACHE 0x1
#define SLOTS_CACHE_RET 0x2
{
long pages;
- if (!swap_slot_cache_enabled || !swap_slot_cache_initialized)
+ if (!swap_slot_cache_enabled)
return false;
pages = get_nr_swap_pages();
int enable_swap_slots_cache(void)
{
- int ret = 0;
-
mutex_lock(&swap_slots_cache_enable_mutex);
- if (swap_slot_cache_initialized) {
- __reenable_swap_slots_cache();
- goto out_unlock;
- }
+ if (!swap_slot_cache_initialized) {
+ int ret;
- ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "swap_slots_cache",
- alloc_swap_slot_cache, free_slot_cache);
- if (WARN_ONCE(ret < 0, "Cache allocation failed (%s), operating "
- "without swap slots cache.\n", __func__))
- goto out_unlock;
+ ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "swap_slots_cache",
+ alloc_swap_slot_cache, free_slot_cache);
+ if (WARN_ONCE(ret < 0, "Cache allocation failed (%s), operating "
+ "without swap slots cache.\n", __func__))
+ goto out_unlock;
+
+ swap_slot_cache_initialized = true;
+ }
- swap_slot_cache_initialized = true;
__reenable_swap_slots_cache();
out_unlock:
mutex_unlock(&swap_slots_cache_enable_mutex);