memcg: fix Bad page state after replace_page_cache

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 7d698df..b868def 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2165,7 +2165,7 @@ static int __cpuinit memcg_cpu_hotplug_callback(struct notifier_block *nb,
        if (action == CPU_ONLINE)
                return NOTIFY_OK;
 
-       if ((action != CPU_DEAD) || action != CPU_DEAD_FROZEN)
+       if (action != CPU_DEAD && action != CPU_DEAD_FROZEN)
                return NOTIFY_OK;
 
        for_each_mem_cgroup(iter)
@@ -3392,6 +3392,7 @@ void mem_cgroup_replace_page_cache(struct page *oldpage,
         * the newpage may be on LRU(or pagevec for LRU) already. We lock
         * LRU while we overwrite pc->mem_cgroup.
         */
+       pc = lookup_page_cgroup(newpage);
        __mem_cgroup_commit_charge(memcg, newpage, 1, pc, type, true);
 }
 
@@ -3763,7 +3764,7 @@ move_account:
                        goto try_to_free;
                cond_resched();
        /* "ret" should also be checked to ensure all lists are empty. */
-       } while (memcg->res.usage > 0 || ret);
+       } while (res_counter_read_u64(&memcg->res, RES_USAGE) > 0 || ret);
 out:
        css_put(&memcg->css);
        return ret;
@@ -3778,7 +3779,7 @@ try_to_free:
        lru_add_drain_all();
        /* try to free all pages in this cgroup */
        shrink = 1;
-       while (nr_retries && memcg->res.usage > 0) {
+       while (nr_retries && res_counter_read_u64(&memcg->res, RES_USAGE) > 0) {
                int progress;
 
                if (signal_pending(current)) {