Re: [PATCH] Check PageActive when evictable page and unevicetablepage race happen

[Minchan Kim]

On Sun, Apr 24, 2011 at 09:25:51AM +0900, Minchan Kim wrote:
> In putback_lru_page, unevictable page can be changed into evictable
> 's one while we move it among lru. So we have checked it again and
> rescued it. But we don't check PageActive, again. It could add
> active page into inactive list so we can see the BUG in isolate_lru_pages.
> (But I didn't see any report because I think it's very subtle)

As I look the code further, that's because lru_cache_add_lru always 
cleans up PageActive regardless of LRU list. 
If active page goes to inactive list, we shouldn't meet the BUG 
but it's apparently wrong. 

-- 
Kind regards,
Minchan Kim
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