Re: RFC: Easy-Reclaimable LRU list

[Minchan Kim]

On 06/25/2012 05:46 PM, Glauber Costa wrote:

> On 06/19/2012 09:49 AM, Minchan Kim wrote:
>> Hi everybody!
>>
>> Recently, there are some efforts to handle system memory pressure.
>>
>> 1) low memory notification - [1]
>> 2) fallocate(VOLATILE) - [2]
>> 3) fadvise(NOREUSE) - [3]
>>
>> For them, I would like to add new LRU list, aka "Ereclaimable" which
>> is opposite of "unevictable".
>> Reclaimable LRU list includes_easy_  reclaimable pages.
>> For example, easy reclaimable pages are following as.
>>
>> 1. invalidated but remained LRU list.
>> 2. pageout pages for reclaim(PG_reclaim pages)
>> 3. fadvise(NOREUSE)
>> 4. fallocate(VOLATILE)
>>
>> Their pages shouldn't stir normal LRU list and compaction might not
>> migrate them, even.
> What about other things moving memory like CMA ?


Sorry for not being able to understand your point.
Can you elaborate a bit more?

-- 
Kind regards,
Minchan Kim
--
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/