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-rw-r--r--mm/page_alloc.c34
1 files changed, 13 insertions, 21 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 73d812f..580a5f0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -234,8 +234,8 @@ int page_group_by_mobility_disabled __read_mostly;
void set_pageblock_migratetype(struct page *page, int migratetype)
{
-
- if (unlikely(page_group_by_mobility_disabled))
+ if (unlikely(page_group_by_mobility_disabled &&
+ migratetype < MIGRATE_PCPTYPES))
migratetype = MIGRATE_UNMOVABLE;
set_pageblock_flags_group(page, (unsigned long)migratetype,
@@ -1027,6 +1027,10 @@ static int try_to_steal_freepages(struct zone *zone, struct page *page,
{
int current_order = page_order(page);
+ /*
+ * When borrowing from MIGRATE_CMA, we need to release the excess
+ * buddy pages to CMA itself.
+ */
if (is_migrate_cma(fallback_type))
return fallback_type;
@@ -1091,21 +1095,11 @@ __rmqueue_fallback(struct zone *zone, int order, int start_migratetype)
list_del(&page->lru);
rmv_page_order(page);
- /*
- * Borrow the excess buddy pages as well, irrespective
- * of whether we stole freepages, or took ownership of
- * the pageblock or not.
- *
- * Exception: When borrowing from MIGRATE_CMA, release
- * the excess buddy pages to CMA itself.
- */
expand(zone, page, order, current_order, area,
- is_migrate_cma(migratetype)
- ? migratetype : start_migratetype);
+ new_type);
- trace_mm_page_alloc_extfrag(page, order,
- current_order, start_migratetype, migratetype,
- new_type == start_migratetype);
+ trace_mm_page_alloc_extfrag(page, order, current_order,
+ start_migratetype, migratetype, new_type);
return page;
}
@@ -1711,7 +1705,7 @@ bool zone_watermark_ok_safe(struct zone *z, int order, unsigned long mark,
* comments in mmzone.h. Reduces cache footprint of zonelist scans
* that have to skip over a lot of full or unallowed zones.
*
- * If the zonelist cache is present in the passed in zonelist, then
+ * If the zonelist cache is present in the passed zonelist, then
* returns a pointer to the allowed node mask (either the current
* tasks mems_allowed, or node_states[N_MEMORY].)
*
@@ -2593,7 +2587,7 @@ rebalance:
* running out of options and have to consider going OOM
*/
if (!did_some_progress) {
- if ((gfp_mask & __GFP_FS) && !(gfp_mask & __GFP_NORETRY)) {
+ if (oom_gfp_allowed(gfp_mask)) {
if (oom_killer_disabled)
goto nopage;
/* Coredumps can quickly deplete all memory reserves */
@@ -3881,8 +3875,6 @@ static inline unsigned long wait_table_bits(unsigned long size)
return ffz(~size);
}
-#define LONG_ALIGN(x) (((x)+(sizeof(long))-1)&~((sizeof(long))-1))
-
/*
* Check if a pageblock contains reserved pages
*/
@@ -4266,7 +4258,7 @@ static __meminit void zone_pcp_init(struct zone *zone)
*/
zone->pageset = &boot_pageset;
- if (zone->present_pages)
+ if (populated_zone(zone))
printk(KERN_DEBUG " %s zone: %lu pages, LIFO batch:%u\n",
zone->name, zone->present_pages,
zone_batchsize(zone));
@@ -5160,7 +5152,7 @@ static void check_for_memory(pg_data_t *pgdat, int nid)
for (zone_type = 0; zone_type <= ZONE_MOVABLE - 1; zone_type++) {
struct zone *zone = &pgdat->node_zones[zone_type];
- if (zone->present_pages) {
+ if (populated_zone(zone)) {
node_set_state(nid, N_HIGH_MEMORY);
if (N_NORMAL_MEMORY != N_HIGH_MEMORY &&
zone_type <= ZONE_NORMAL)
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