Re: [patch] mm, compaction: avoid isolating pinned pages fix

[David Rientjes]

On Tue, 4 Feb 2014, Joonsoo Kim wrote:

> Okay. It can't fix your situation. Anyway, *normal* anon pages may be mapped
> and have positive page_count(), so your code such as
> '!page_mapping(page) && page_count(page)' makes compaction skip these *normal*
> anon pages and this is incorrect behaviour.
> 

So how does that work with migrate_page_move_mapping() which demands 
page_count(page) == 1 and the get_page_unless_zero() in 
__isolate_lru_page()?
--
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/