diff options
| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2010-03-05 22:41:47 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-06 20:26:24 +0100 |
| commit | 84b18490d1f1bc7ed5095c929f78bc002eb70f26 (patch) | |
| tree | 2543443925b2852436979d4bdf18d916a6b5c11e /mm | |
| parent | vmscan: check high watermark after shrink zone (diff) | |
| download | linux-84b18490d1f1bc7ed5095c929f78bc002eb70f26.tar.xz linux-84b18490d1f1bc7ed5095c929f78bc002eb70f26.zip | |
vmscan: get_scan_ratio() cleanup
The get_scan_ratio() should have all scan-ratio related calculations.
Thus, this patch move some calculation into get_scan_ratio.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmscan.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 96ebe6608d5c..62782057fcb9 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1501,6 +1501,13 @@ static void get_scan_ratio(struct zone *zone, struct scan_control *sc, unsigned long ap, fp; struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(zone, sc); + /* If we have no swap space, do not bother scanning anon pages. */ + if (!sc->may_swap || (nr_swap_pages <= 0)) { + percent[0] = 0; + percent[1] = 100; + return; + } + anon = zone_nr_lru_pages(zone, sc, LRU_ACTIVE_ANON) + zone_nr_lru_pages(zone, sc, LRU_INACTIVE_ANON); file = zone_nr_lru_pages(zone, sc, LRU_ACTIVE_FILE) + @@ -1598,22 +1605,20 @@ static void shrink_zone(int priority, struct zone *zone, unsigned long nr_reclaimed = sc->nr_reclaimed; unsigned long nr_to_reclaim = sc->nr_to_reclaim; struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(zone, sc); - int noswap = 0; - /* If we have no swap space, do not bother scanning anon pages. */ - if (!sc->may_swap || (nr_swap_pages <= 0)) { - noswap = 1; - percent[0] = 0; - percent[1] = 100; - } else - get_scan_ratio(zone, sc, percent); + get_scan_ratio(zone, sc, percent); for_each_evictable_lru(l) { int file = is_file_lru(l); unsigned long scan; + if (percent[file] == 0) { + nr[l] = 0; + continue; + } + scan = zone_nr_lru_pages(zone, sc, l); - if (priority || noswap) { + if (priority) { scan >>= priority; scan = (scan * percent[file]) / 100; } |