diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index fd572bbdc9f..acdf001d694 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1305,7 +1305,7 @@ unsigned long shrink_all_memory(unsigned long nr_pages) current->reclaim_state = &reclaim_state; repeat: - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { unsigned long freed; freed = balance_pgdat(pgdat, nr_to_free, 0); @@ -1335,7 +1335,7 @@ static int __devinit cpu_callback(struct notifier_block *nfb, cpumask_t mask; if (action == CPU_ONLINE) { - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { mask = node_to_cpumask(pgdat->node_id); if (any_online_cpu(mask) != NR_CPUS) /* One of our CPUs online: restore mask */ @@ -1351,12 +1351,14 @@ static int __init kswapd_init(void) pg_data_t *pgdat; swap_setup(); - for_each_pgdat(pgdat) { + for_each_online_pgdat(pgdat) { pid_t pid; pid = kernel_thread(kswapd, pgdat, CLONE_KERNEL); BUG_ON(pid < 0); + read_lock(&tasklist_lock); pgdat->kswapd = find_task_by_pid(pid); + read_unlock(&tasklist_lock); } total_memory = nr_free_pagecache_pages(); hotcpu_notifier(cpu_callback, 0); |