diff options
Diffstat (limited to 'mm/memory-tiers.c')
| -rw-r--r-- | mm/memory-tiers.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index 0382b6942b8b..0ea5c13f10a2 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -942,11 +942,23 @@ static ssize_t demotion_enabled_store(struct kobject *kobj, const char *buf, size_t count) { ssize_t ret; + bool before = numa_demotion_enabled; ret = kstrtobool(buf, &numa_demotion_enabled); if (ret) return ret; + /* + * Reset kswapd_failures statistics. They may no longer be + * valid since the policy for kswapd has changed. + */ + if (before == false && numa_demotion_enabled == true) { + struct pglist_data *pgdat; + + for_each_online_pgdat(pgdat) + atomic_set(&pgdat->kswapd_failures, 0); + } + return count; } |