diff options
Diffstat (limited to 'mm/swap.c')
| -rw-r--r-- | mm/swap.c | 45 |
1 files changed, 1 insertions, 44 deletions
diff --git a/mm/swap.c b/mm/swap.c index 88895c249bc..990868afc1c 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -86,8 +86,7 @@ int rotate_reclaimable_page(struct page *page) zone = page_zone(page); spin_lock_irqsave(&zone->lru_lock, flags); if (PageLRU(page) && !PageActive(page)) { - list_del(&page->lru); - list_add_tail(&page->lru, &zone->inactive_list); + list_move_tail(&page->lru, &zone->inactive_list); inc_page_state(pgrotated); } if (!test_clear_page_writeback(page)) @@ -480,48 +479,6 @@ static int cpu_swap_callback(struct notifier_block *nfb, #endif /* CONFIG_HOTPLUG_CPU */ #endif /* CONFIG_SMP */ -#ifdef CONFIG_SMP -void percpu_counter_mod(struct percpu_counter *fbc, long amount) -{ - long count; - long *pcount; - int cpu = get_cpu(); - - pcount = per_cpu_ptr(fbc->counters, cpu); - count = *pcount + amount; - if (count >= FBC_BATCH || count <= -FBC_BATCH) { - spin_lock(&fbc->lock); - fbc->count += count; - *pcount = 0; - spin_unlock(&fbc->lock); - } else { - *pcount = count; - } - put_cpu(); -} -EXPORT_SYMBOL(percpu_counter_mod); - -/* - * Add up all the per-cpu counts, return the result. This is a more accurate - * but much slower version of percpu_counter_read_positive() - */ -long percpu_counter_sum(struct percpu_counter *fbc) -{ - long ret; - int cpu; - - spin_lock(&fbc->lock); - ret = fbc->count; - for_each_possible_cpu(cpu) { - long *pcount = per_cpu_ptr(fbc->counters, cpu); - ret += *pcount; - } - spin_unlock(&fbc->lock); - return ret < 0 ? 0 : ret; -} -EXPORT_SYMBOL(percpu_counter_sum); -#endif - /* * Perform any setup for the swap system */ |