Re: [bug][mmtom] memcg: MEM_CGROUP_ZSTAT underflow

[KAMEZAWA Hiroyuki]

On Fri, 19 Dec 2008 18:29:29 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote:

> +	/*
> + 	 * Don't clear pc->mem_cgroup because del_from_lru() will see this.
> + 	 * The fully unchaged page is assumed to be freed after us, so it's
> + 	 * safe. When this page is reused before free, we have to be careful.
> + 	 * (In SwapCache case...it can happen.)
> +  	 */
>  
Maybe this is better.
==
       /*
         * Don't clear pc->mem_cgroup because del_from_lru() may see this.
         * If this page is fully unchaged, it's assumed to be freed soon,or it
         * is isolated from LRU.  When this page is reused before free
         * (and on LRU), we have to be careful.
         * (In SwapCache case...it can happen.)
         */
==
Hmm.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/