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Date: Sat, 12 Nov 2011 08:32:33 +0900 From: Minchan Kim <minchan.kim@...il.com> To: Konstantin Khlebnikov <khlebnikov@...nvz.org> Cc: linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>, Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 1/4] mm: add free_hot_cold_page_list helper On Fri, Nov 11, 2011 at 10:39 PM, Konstantin Khlebnikov <khlebnikov@...nvz.org> 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@...nvz.org> Reviewed-by: Minchan Kim <minchan.kim@...il.com> -- Kind regards, Minchan Kim
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