On Thu, Mar 18, 2021 at 4:08 AM Muchun Song <songmuchun@xxxxxxxxxxxxx> wrote: > > The page_memcg() is not suitable for use by page_expected_state() and > page_bad_reason(). Because it can BUG_ON() for the slab pages when > CONFIG_DEBUG_VM is enabled. As neither lru, nor kmem, nor slab page > should have anything left in there by the time the page is freed, what > we care about is whether the value of page->memcg_data is 0. So just > directly access page->memcg_data here. > > Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
