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SubjectRe: [PATCH 6/7] memcg: add per cgroup writeback pages accounting
> @@ -2245,7 +2252,10 @@ int test_set_page_writeback(struct page *page)
> {
> struct address_space *mapping = page_mapping(page);
> int ret;
> + bool locked;
> + unsigned long flags;
>
> + mem_cgroup_begin_update_page_stat(page, &locked, &flags);
> if (mapping) {
> struct backing_dev_info *bdi = mapping->backing_dev_info;
> unsigned long flags;
> @@ -2272,6 +2282,8 @@ int test_set_page_writeback(struct page *page)
> }
> if (!ret)
> account_page_writeback(page);
> +
> + mem_cgroup_end_update_page_stat(page, &locked, &flags);
> return ret;
>
> }

Where is the MEM_CGROUP_STAT_FILE_WRITEBACK increased?

Thanks,
Fengguang


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