Re: [RFC][PATCH] putback_lru_page()/unevictable page handlingrework v3

[KAMEZAWA Hiroyuki]

On Tue, 24 Jun 2008 18:49:05 +0900
KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> wrote:

> > +	mem_cgroup_move_lists(page, lru);
> > +
> > +	/*
> > +	 * page's status can change while we move it among lru. If an evictable
> > +	 * page is on unevictable list, it never be freed. To avoid that,
> > +	 * check after we added it to the list, again.
> > +	 */
> > +	if (lru == LRU_UNEVICTABLE && page_evictable(page, NULL)) {
> > +		if (!isolate_lru_page(page)) {
> > +			put_page(page);
> > +			goto redo;
> 
> at this point, We should call ClearPageUnevictable().
> otherwise, BUG() is called on isolate_lru_pages().
> 
Sure. thanks,
-Kame

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