Re: [RFC][PATCH -mm 6/7] memcg:make-mapping-null-before-calling-uncharge.patch

[Daisuke Nishimura]

> @@ -379,6 +377,15 @@ static void migrate_page_copy(struct pag
>  	ClearPagePrivate(page);
>  	set_page_private(page, 0);
>  	page->mapping = NULL;
You forget to remove this line :)

Thanks,
Daisuke Nishimura.

> +	/* page->mapping contains a flag for PageAnon() */
> +	if (PageAnon(page)) {
> +		/* This page is uncharged at try_to_unmap(). */
> +		page->mapping = NULL;
> +	} else {
> +		/* Obsolete file cache should be uncharged */
> +		page->mapping = NULL;
> +		mem_cgroup_uncharge_cache_page(page);
> +	}
>  
>  	/*
>  	 * If any waiters have accumulated on the new page then
> 
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