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mm: page_alloc: use get_freepage_migratetype() instead of page_private()
The page allocator uses set_page_private and page_private for handling migratetype when it frees page. Let's replace them with [set|get] _freepage_migratetype to make it more clear. Signed-off-by: Minchan Kim <minchan@kernel.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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3 changed files with 16 additions and 4 deletions
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@ -237,6 +237,18 @@ struct inode;
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#define page_private(page) ((page)->private)
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#define set_page_private(page, v) ((page)->private = (v))
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/* It's valid only if the page is free path or free_list */
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static inline void set_freepage_migratetype(struct page *page, int migratetype)
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{
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set_page_private(page, migratetype);
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}
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/* It's valid only if the page is free path or free_list */
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static inline int get_freepage_migratetype(struct page *page)
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{
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return page_private(page);
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}
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/*
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* FIXME: take this include out, include page-flags.h in
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* files which need it (119 of them)
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@ -674,7 +674,7 @@ static void free_pcppages_bulk(struct zone *zone, int count,
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page = list_entry(list->prev, struct page, lru);
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/* must delete as __free_one_page list manipulates */
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list_del(&page->lru);
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mt = page_private(page);
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mt = get_freepage_migratetype(page);
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/* MIGRATE_MOVABLE list may include MIGRATE_RESERVEs */
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__free_one_page(page, zone, 0, mt);
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trace_mm_page_pcpu_drain(page, 0, mt);
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@ -1143,7 +1143,7 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order,
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if (!is_migrate_cma(mt) && mt != MIGRATE_ISOLATE)
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mt = migratetype;
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}
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set_page_private(page, mt);
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set_freepage_migratetype(page, mt);
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list = &page->lru;
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if (is_migrate_cma(mt))
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__mod_zone_page_state(zone, NR_FREE_CMA_PAGES,
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@ -1313,7 +1313,7 @@ void free_hot_cold_page(struct page *page, int cold)
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return;
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migratetype = get_pageblock_migratetype(page);
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set_page_private(page, migratetype);
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set_freepage_migratetype(page, migratetype);
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local_irq_save(flags);
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if (unlikely(wasMlocked))
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free_page_mlock(page);
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@ -203,7 +203,7 @@ __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn)
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if (PageBuddy(page))
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pfn += 1 << page_order(page);
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else if (page_count(page) == 0 &&
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page_private(page) == MIGRATE_ISOLATE)
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get_freepage_migratetype(page) == MIGRATE_ISOLATE)
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pfn += 1;
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else
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break;
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