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vmscan: zone_reclaim() don't use insane swap_cluster_max
[safe/jmp/linux-2.6]
/
mm
/
memory_hotplug.c
diff --git
a/mm/memory_hotplug.c
b/mm/memory_hotplug.c
index
efe3e0e
..
bc5a081
100644
(file)
--- a/
mm/memory_hotplug.c
+++ b/
mm/memory_hotplug.c
@@
-26,6
+26,8
@@
#include <linux/migrate.h>
#include <linux/page-isolation.h>
#include <linux/pfn.h>
#include <linux/migrate.h>
#include <linux/page-isolation.h>
#include <linux/pfn.h>
+#include <linux/suspend.h>
+#include <linux/mm_inline.h>
#include <asm/tlbflush.h>
#include <asm/tlbflush.h>
@@
-413,7
+415,7
@@
int online_pages(unsigned long pfn, unsigned long nr_pages)
if (!populated_zone(zone))
need_zonelists_rebuild = 1;
if (!populated_zone(zone))
need_zonelists_rebuild = 1;
- ret = walk_
memory_resourc
e(pfn, nr_pages, &onlined_pages,
+ ret = walk_
system_ram_rang
e(pfn, nr_pages, &onlined_pages,
online_pages_range);
if (ret) {
printk(KERN_DEBUG "online_pages %lx at %lx failed\n",
online_pages_range);
if (ret) {
printk(KERN_DEBUG "online_pages %lx at %lx failed\n",
@@
-447,7
+449,8
@@
int online_pages(unsigned long pfn, unsigned long nr_pages)
}
#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
}
#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
-static pg_data_t *hotadd_new_pgdat(int nid, u64 start)
+/* we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG */
+static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
{
struct pglist_data *pgdat;
unsigned long zones_size[MAX_NR_ZONES] = {0};
{
struct pglist_data *pgdat;
unsigned long zones_size[MAX_NR_ZONES] = {0};
@@
-484,14
+487,18
@@
int __ref add_memory(int nid, u64 start, u64 size)
struct resource *res;
int ret;
struct resource *res;
int ret;
+ lock_system_sleep();
+
res = register_memory_resource(start, size);
res = register_memory_resource(start, size);
+ ret = -EEXIST;
if (!res)
if (!res)
-
return -EEXIST
;
+
goto out
;
if (!node_online(nid)) {
pgdat = hotadd_new_pgdat(nid, start);
if (!node_online(nid)) {
pgdat = hotadd_new_pgdat(nid, start);
+ ret = -ENOMEM;
if (!pgdat)
if (!pgdat)
-
return -ENOMEM
;
+
goto out
;
new_pgdat = 1;
}
new_pgdat = 1;
}
@@
-514,7
+521,8
@@
int __ref add_memory(int nid, u64 start, u64 size)
BUG_ON(ret);
}
BUG_ON(ret);
}
- return ret;
+ goto out;
+
error:
/* rollback pgdat allocation and others */
if (new_pgdat)
error:
/* rollback pgdat allocation and others */
if (new_pgdat)
@@
-522,6
+530,8
@@
error:
if (res)
release_memory_resource(res);
if (res)
release_memory_resource(res);
+out:
+ unlock_system_sleep();
return ret;
}
EXPORT_SYMBOL_GPL(add_memory);
return ret;
}
EXPORT_SYMBOL_GPL(add_memory);
@@
-663,6
+673,9
@@
do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
if (!ret) { /* Success */
list_add_tail(&page->lru, &source);
move_pages--;
if (!ret) { /* Success */
list_add_tail(&page->lru, &source);
move_pages--;
+ inc_zone_page_state(page, NR_ISOLATED_ANON +
+ page_is_file_cache(page));
+
} else {
/* Becasue we don't have big zone->lock. we should
check this again here. */
} else {
/* Becasue we don't have big zone->lock. we should
check this again here. */
@@
-705,7
+718,7
@@
offline_isolated_pages_cb(unsigned long start, unsigned long nr_pages,
static void
offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn)
{
static void
offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn)
{
- walk_
memory_resourc
e(start_pfn, end_pfn - start_pfn, NULL,
+ walk_
system_ram_rang
e(start_pfn, end_pfn - start_pfn, NULL,
offline_isolated_pages_cb);
}
offline_isolated_pages_cb);
}
@@
-731,7
+744,7
@@
check_pages_isolated(unsigned long start_pfn, unsigned long end_pfn)
long offlined = 0;
int ret;
long offlined = 0;
int ret;
- ret = walk_
memory_resourc
e(start_pfn, end_pfn - start_pfn, &offlined,
+ ret = walk_
system_ram_rang
e(start_pfn, end_pfn - start_pfn, &offlined,
check_pages_isolated_cb);
if (ret < 0)
offlined = (long)ret;
check_pages_isolated_cb);
if (ret < 0)
offlined = (long)ret;
@@
-758,6
+771,8
@@
int offline_pages(unsigned long start_pfn,
if (!test_pages_in_a_zone(start_pfn, end_pfn))
return -EINVAL;
if (!test_pages_in_a_zone(start_pfn, end_pfn))
return -EINVAL;
+ lock_system_sleep();
+
zone = page_zone(pfn_to_page(start_pfn));
node = zone_to_nid(zone);
nr_pages = end_pfn - start_pfn;
zone = page_zone(pfn_to_page(start_pfn));
node = zone_to_nid(zone);
nr_pages = end_pfn - start_pfn;
@@
-765,7
+780,7
@@
int offline_pages(unsigned long start_pfn,
/* set above range as isolated */
ret = start_isolate_page_range(start_pfn, end_pfn);
if (ret)
/* set above range as isolated */
ret = start_isolate_page_range(start_pfn, end_pfn);
if (ret)
-
return re
t;
+
goto ou
t;
arg.start_pfn = start_pfn;
arg.nr_pages = nr_pages;
arg.start_pfn = start_pfn;
arg.nr_pages = nr_pages;
@@
-838,11
+853,16
@@
repeat:
setup_per_zone_wmarks();
calculate_zone_inactive_ratio(zone);
setup_per_zone_wmarks();
calculate_zone_inactive_ratio(zone);
+ if (!node_present_pages(node)) {
+ node_clear_state(node, N_HIGH_MEMORY);
+ kswapd_stop(node);
+ }
vm_total_pages = nr_free_pagecache_pages();
writeback_set_ratelimit();
memory_notify(MEM_OFFLINE, &arg);
vm_total_pages = nr_free_pagecache_pages();
writeback_set_ratelimit();
memory_notify(MEM_OFFLINE, &arg);
+ unlock_system_sleep();
return 0;
failed_removal:
return 0;
failed_removal:
@@
-852,6
+872,8
@@
failed_removal:
/* pushback to free area */
undo_isolate_page_range(start_pfn, end_pfn);
/* pushback to free area */
undo_isolate_page_range(start_pfn, end_pfn);
+out:
+ unlock_system_sleep();
return ret;
}
return ret;
}