diff options
| author | Konstantin Khlebnikov <khlebnikov@openvz.org> | 2012-01-10 15:07:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 16:30:41 -0800 |
| commit | cc59850ef940e4ee6a765d28b439b9bafe07cf63 (patch) | |
| tree | 03b666986e9cc7dfc113a14721c44aa9e149f871 /mm/page_alloc.c | |
| parent | c909e99364c8b6ca07864d752950b6b4ecf6bef4 (diff) | |
| download | linux-next-cc59850ef940e4ee6a765d28b439b9bafe07cf63.tar.gz | |
mm: add free_hot_cold_page_list() helper
This patch adds helper free_hot_cold_page_list() to free list of 0-order
pages. It frees pages directly from 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
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 7990ca154d1b..cd0c95c6cc9e 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1189,6 +1189,19 @@ out: } /* + * Free a list of 0-order pages + */ +void free_hot_cold_page_list(struct list_head *list, int cold) +{ + struct page *page, *next; + + list_for_each_entry_safe(page, next, list, lru) { + trace_mm_pagevec_free(page, cold); + free_hot_cold_page(page, cold); + } +} + +/* * split_page takes a non-compound higher-order page, and splits it into * n (1<<order) sub-pages: page[0..n] * Each sub-page must be freed individually. |