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authorJiang Liu <liuj97@gmail.com>2013-02-22 16:33:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 17:50:14 -0800
commitb40da04946aa7b603b2aa4dd479f83b2c9090d96 (patch)
treee4c93fd9375f9c90449ef37f4456fbd3c5a7b6b6 /mm/page_alloc.c
parentf7210e6c4ac795694106c1c5307134d3fc233e88 (diff)
downloadlinux-b40da04946aa7b603b2aa4dd479f83b2c9090d96.tar.gz
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/page_alloc.c')
-rw-r--r--mm/page_alloc.c32
1 files changed, 16 insertions, 16 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a7381be2132..5f73106bd8d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2808,7 +2808,7 @@ static unsigned int nr_free_zone_pages(int offset)
struct zonelist *zonelist = node_zonelist(numa_node_id(), GFP_KERNEL);
for_each_zone_zonelist(zone, z, zonelist, offset) {
- unsigned long size = zone->present_pages;
+ unsigned long size = zone->managed_pages;
unsigned long high = high_wmark_pages(zone);
if (size > high)
sum += size - high;
@@ -2861,7 +2861,7 @@ void si_meminfo_node(struct sysinfo *val, int nid)
val->totalram = pgdat->node_present_pages;
val->freeram = node_page_state(nid, NR_FREE_PAGES);
#ifdef CONFIG_HIGHMEM
- val->totalhigh = pgdat->node_zones[ZONE_HIGHMEM].present_pages;
+ val->totalhigh = pgdat->node_zones[ZONE_HIGHMEM].managed_pages;
val->freehigh = zone_page_state(&pgdat->node_zones[ZONE_HIGHMEM],
NR_FREE_PAGES);
#else
@@ -3939,7 +3939,7 @@ static int __meminit zone_batchsize(struct zone *zone)
*
* OK, so we don't know how big the cache is. So guess.
*/
- batch = zone->present_pages / 1024;
+ batch = zone->managed_pages / 1024;
if (batch * PAGE_SIZE > 512 * 1024)
batch = (512 * 1024) / PAGE_SIZE;
batch /= 4; /* We effectively *= 4 below */
@@ -4023,7 +4023,7 @@ static void __meminit setup_zone_pageset(struct zone *zone)
if (percpu_pagelist_fraction)
setup_pagelist_highmark(pcp,
- (zone->present_pages /
+ (zone->managed_pages /
percpu_pagelist_fraction));
}
}
@@ -5435,8 +5435,8 @@ static void calculate_totalreserve_pages(void)
/* we treat the high watermark as reserved pages. */
max += high_wmark_pages(zone);
- if (max > zone->present_pages)
- max = zone->present_pages;
+ if (max > zone->managed_pages)
+ max = zone->managed_pages;
reserve_pages += max;
/*
* Lowmem reserves are not available to
@@ -5468,7 +5468,7 @@ static void setup_per_zone_lowmem_reserve(void)
for_each_online_pgdat(pgdat) {
for (j = 0; j < MAX_NR_ZONES; j++) {
struct zone *zone = pgdat->node_zones + j;
- unsigned long present_pages = zone->present_pages;
+ unsigned long managed_pages = zone->managed_pages;
zone->lowmem_reserve[j] = 0;
@@ -5482,9 +5482,9 @@ static void setup_per_zone_lowmem_reserve(void)
sysctl_lowmem_reserve_ratio[idx] = 1;
lower_zone = pgdat->node_zones + idx;
- lower_zone->lowmem_reserve[j] = present_pages /
+ lower_zone->lowmem_reserve[j] = managed_pages /
sysctl_lowmem_reserve_ratio[idx];
- present_pages += lower_zone->present_pages;
+ managed_pages += lower_zone->managed_pages;
}
}
}
@@ -5503,14 +5503,14 @@ static void __setup_per_zone_wmarks(void)
/* Calculate total number of !ZONE_HIGHMEM pages */
for_each_zone(zone) {
if (!is_highmem(zone))
- lowmem_pages += zone->present_pages;
+ lowmem_pages += zone->managed_pages;
}
for_each_zone(zone) {
u64 tmp;
spin_lock_irqsave(&zone->lock, flags);
- tmp = (u64)pages_min * zone->present_pages;
+ tmp = (u64)pages_min * zone->managed_pages;
do_div(tmp, lowmem_pages);
if (is_highmem(zone)) {
/*
@@ -5524,7 +5524,7 @@ static void __setup_per_zone_wmarks(void)
*/
unsigned long min_pages;
- min_pages = zone->present_pages / 1024;
+ min_pages = zone->managed_pages / 1024;
min_pages = clamp(min_pages, SWAP_CLUSTER_MAX, 128UL);
zone->watermark[WMARK_MIN] = min_pages;
} else {
@@ -5586,7 +5586,7 @@ static void __meminit calculate_zone_inactive_ratio(struct zone *zone)
unsigned int gb, ratio;
/* Zone size in gigabytes */
- gb = zone->present_pages >> (30 - PAGE_SHIFT);
+ gb = zone->managed_pages >> (30 - PAGE_SHIFT);
if (gb)
ratio = int_sqrt(10 * gb);
else
@@ -5672,7 +5672,7 @@ int sysctl_min_unmapped_ratio_sysctl_handler(ctl_table *table, int write,
return rc;
for_each_zone(zone)
- zone->min_unmapped_pages = (zone->present_pages *
+ zone->min_unmapped_pages = (zone->managed_pages *
sysctl_min_unmapped_ratio) / 100;
return 0;
}
@@ -5688,7 +5688,7 @@ int sysctl_min_slab_ratio_sysctl_handler(ctl_table *table, int write,
return rc;
for_each_zone(zone)
- zone->min_slab_pages = (zone->present_pages *
+ zone->min_slab_pages = (zone->managed_pages *
sysctl_min_slab_ratio) / 100;
return 0;
}
@@ -5730,7 +5730,7 @@ int percpu_pagelist_fraction_sysctl_handler(ctl_table *table, int write,
for_each_populated_zone(zone) {
for_each_possible_cpu(cpu) {
unsigned long high;
- high = zone->present_pages / percpu_pagelist_fraction;
+ high = zone->managed_pages / percpu_pagelist_fraction;
setup_pagelist_highmark(
per_cpu_ptr(zone->pageset, cpu), high);
}