On Fri, Nov 11, 2011 at 10:39 PM, Konstantin Khlebnikov
<khlebnikov@xxxxxxxxxx> wrote:
> This patch adds helper free_hot_cold_page_list() to free list of 0-order pages.
> It frees pages directly from the list without temporary page-vector.
> It also calls trace_mm_pagevec_free() to simulate pagevec_free() behaviour.
>
> bloat-o-meter:
>
> add/remove: 1/1 grow/shrink: 1/3 up/down: 267/-295 (-28)
> function old new delta
> free_hot_cold_page_list - 264 +264
> get_page_from_freelist 2129 2132 +3
> __pagevec_free 243 239 -4
> split_free_page 380 373 -7
> release_pages 606 510 -96
> free_page_list 188 - -188
>
> v2: Remove list reinititialization.
> v3: Always free pages in reverse order.
> The most recently added struct page, the most likely to be hot.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
--
Kind regards,
Minchan Kim
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