diff options
| -rw-r--r-- | mm/page_alloc.c | 79 |
1 files changed, 46 insertions, 33 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 5e6fa06..bc5da2c 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -764,6 +764,51 @@ static int free_tail_pages_check(struct page *head_page, struct page *page) return 0; } +static void __meminit __init_single_page(struct page *page, unsigned long pfn, + unsigned long zone, int nid) +{ + struct zone *z = &NODE_DATA(nid)->node_zones[zone]; + + set_page_links(page, zone, nid, pfn); + mminit_verify_page_links(page, zone, nid, pfn); + init_page_count(page); + page_mapcount_reset(page); + page_cpupid_reset_last(page); + SetPageReserved(page); + + /* + * Mark the block movable so that blocks are reserved for + * movable at startup. This will force kernel allocations + * to reserve their blocks rather than leaking throughout + * the address space during boot when many long-lived + * kernel allocations are made. Later some blocks near + * the start are marked MIGRATE_RESERVE by + * setup_zone_migrate_reserve() + * + * bitmap is created for zone's valid pfn range. but memmap + * can be created for invalid pages (for alignment) + * check here not to call set_pageblock_migratetype() against + * pfn out of zone. + */ + if ((z->zone_start_pfn <= pfn) + && (pfn < zone_end_pfn(z)) + && !(pfn & (pageblock_nr_pages - 1))) + set_pageblock_migratetype(page, MIGRATE_MOVABLE); + + INIT_LIST_HEAD(&page->lru); +#ifdef WANT_PAGE_VIRTUAL + /* The shift won't overflow because ZONE_NORMAL is below 4G. */ + if (!is_highmem_idx(zone)) + set_page_address(page, __va(pfn << PAGE_SHIFT)); +#endif +} + +static void __meminit __init_single_pfn(unsigned long pfn, unsigned long zone, + int nid) +{ + return __init_single_page(pfn_to_page(pfn), pfn, zone, nid); +} + static bool free_pages_prepare(struct page *page, unsigned int order) { bool compound = PageCompound(page); @@ -4212,7 +4257,6 @@ static void setup_zone_migrate_reserve(struct zone *zone) void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone, unsigned long start_pfn, enum memmap_context context) { - struct page *page; unsigned long end_pfn = start_pfn + size; unsigned long pfn; struct zone *z; @@ -4233,38 +4277,7 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone, if (!early_pfn_in_nid(pfn, nid)) continue; } - page = pfn_to_page(pfn); - set_page_links(page, zone, nid, pfn); - mminit_verify_page_links(page, zone, nid, pfn); - init_page_count(page); - page_mapcount_reset(page); - page_cpupid_reset_last(page); - SetPageReserved(page); - /* - * Mark the block movable so that blocks are reserved for - * movable at startup. This will force kernel allocations - * to reserve their blocks rather than leaking throughout - * the address space during boot when many long-lived - * kernel allocations are made. Later some blocks near - * the start are marked MIGRATE_RESERVE by - * setup_zone_migrate_reserve() - * - * bitmap is created for zone's valid pfn range. but memmap - * can be created for invalid pages (for alignment) - * check here not to call set_pageblock_migratetype() against - * pfn out of zone. - */ - if ((z->zone_start_pfn <= pfn) - && (pfn < zone_end_pfn(z)) - && !(pfn & (pageblock_nr_pages - 1))) - set_pageblock_migratetype(page, MIGRATE_MOVABLE); - - INIT_LIST_HEAD(&page->lru); -#ifdef WANT_PAGE_VIRTUAL - /* The shift won't overflow because ZONE_NORMAL is below 4G. */ - if (!is_highmem_idx(zone)) - set_page_address(page, __va(pfn << PAGE_SHIFT)); -#endif + __init_single_pfn(pfn, zone, nid); } } |
