Re: [PATCH]: 1/4 batch mark_page_accessed()

[Andrew Morton]

Nikita Danilov <nikita@xxxxxxxxxxxxx> wrote:
>
> Batch mark_page_accessed() (a la lru_cache_add() and lru_cache_add_active()):
>  page to be marked accessed is placed into per-cpu pagevec
>  (page_accessed_pvec). When pagevec is filled up, all pages are processed in a
>  batch.
> 
>  This is supposed to decrease contention on zone->lru_lock.

Looks sane, althought it does add more atomic ops (the extra
get_page/put_page).  Some benchmarks would be nice to have.

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