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authorJiang Liu <liuj97@gmail.com>2013-02-23 04:33:52 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-24 05:50:14 +0400
commitb40da04946aa7b603b2aa4dd479f83b2c9090d96 (patch)
treee4c93fd9375f9c90449ef37f4456fbd3c5a7b6b6 /mm/vmscan.c
parentf7210e6c4ac795694106c1c5307134d3fc233e88 (diff)
downloadlinux-b40da04946aa7b603b2aa4dd479f83b2c9090d96.tar.xz
mm: use zone->present_pages instead of zone->managed_pages where appropriate
Now we have zone->managed_pages for "pages managed by the buddy system in the zone", so replace zone->present_pages with zone->managed_pages if what the user really wants is number of allocatable pages. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: David Rientjes <rientjes@google.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Maciej Rutecki <maciej.rutecki@gmail.com> Cc: Chris Clayton <chris2553@googlemail.com> Cc: "Rafael J . Wysocki" <rjw@sisk.pl> Cc: Mel Gorman <mgorman@suse.de> Cc: Minchan Kim <minchan@kernel.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Jianguo Wu <wujianguo@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 4093b99044f6..8fde2fc223d9 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2010,7 +2010,7 @@ static inline bool compaction_ready(struct zone *zone, struct scan_control *sc)
* a reasonable chance of completing and allocating the page
*/
balance_gap = min(low_wmark_pages(zone),
- (zone->present_pages + KSWAPD_ZONE_BALANCE_GAP_RATIO-1) /
+ (zone->managed_pages + KSWAPD_ZONE_BALANCE_GAP_RATIO-1) /
KSWAPD_ZONE_BALANCE_GAP_RATIO);
watermark = high_wmark_pages(zone) + balance_gap + (2UL << sc->order);
watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, 0, 0);
@@ -2525,7 +2525,7 @@ static bool zone_balanced(struct zone *zone, int order,
*/
static bool pgdat_balanced(pg_data_t *pgdat, int order, int classzone_idx)
{
- unsigned long present_pages = 0;
+ unsigned long managed_pages = 0;
unsigned long balanced_pages = 0;
int i;
@@ -2536,7 +2536,7 @@ static bool pgdat_balanced(pg_data_t *pgdat, int order, int classzone_idx)
if (!populated_zone(zone))
continue;
- present_pages += zone->present_pages;
+ managed_pages += zone->managed_pages;
/*
* A special case here:
@@ -2546,18 +2546,18 @@ static bool pgdat_balanced(pg_data_t *pgdat, int order, int classzone_idx)
* they must be considered balanced here as well!
*/
if (zone->all_unreclaimable) {
- balanced_pages += zone->present_pages;
+ balanced_pages += zone->managed_pages;
continue;
}
if (zone_balanced(zone, order, 0, i))
- balanced_pages += zone->present_pages;
+ balanced_pages += zone->managed_pages;
else if (!order)
return false;
}
if (order)
- return balanced_pages >= (present_pages >> 2);
+ return balanced_pages >= (managed_pages >> 2);
else
return true;
}
@@ -2745,7 +2745,7 @@ loop_again:
* of the zone, whichever is smaller.
*/
balance_gap = min(low_wmark_pages(zone),
- (zone->present_pages +
+ (zone->managed_pages +
KSWAPD_ZONE_BALANCE_GAP_RATIO-1) /
KSWAPD_ZONE_BALANCE_GAP_RATIO);
/*