From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx114.postini.com [74.125.245.114]) by kanga.kvack.org (Postfix) with SMTP id 9CD7B6B0276 for ; Thu, 2 May 2013 20:01:24 -0400 (EDT) Received: from /spool/local by e9.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 2 May 2013 20:01:23 -0400 Received: from d01relay03.pok.ibm.com (d01relay03.pok.ibm.com [9.56.227.235]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id 0D8246E804B for ; Thu, 2 May 2013 20:01:18 -0400 (EDT) Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay03.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r4301KKq274048 for ; Thu, 2 May 2013 20:01:20 -0400 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r4301I54012718 for ; Thu, 2 May 2013 21:01:20 -0300 From: Cody P Schafer Subject: [RFC PATCH v3 08/31] page_alloc: add return_pages_to_zone() when DYNAMIC_NUMA is enabled. Date: Thu, 2 May 2013 17:00:40 -0700 Message-Id: <1367539263-19999-9-git-send-email-cody@linux.vnet.ibm.com> In-Reply-To: <1367539263-19999-1-git-send-email-cody@linux.vnet.ibm.com> References: <1367539263-19999-1-git-send-email-cody@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Linux MM Cc: LKML , Cody P Schafer , Simon Jeons Add return_pages_to_zone(), which uses return_page_to_zone(). It is a minimized version of __free_pages_ok() which handles adding pages which have been removed from another zone into a new zone. Signed-off-by: Cody P Schafer --- mm/internal.h | 5 ++++- mm/page_alloc.c | 17 +++++++++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/mm/internal.h b/mm/internal.h index b11e574..a70c77b 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -104,6 +104,10 @@ extern void prep_compound_page(struct page *page, unsigned long order); #ifdef CONFIG_MEMORY_FAILURE extern bool is_free_buddy_page(struct page *page); #endif +#ifdef CONFIG_DYNAMIC_NUMA +void return_pages_to_zone(struct page *page, unsigned int order, + struct zone *zone); +#endif #ifdef CONFIG_MEMORY_HOTPLUG /* @@ -114,7 +118,6 @@ extern int ensure_zone_is_initialized(struct zone *zone, #endif #if defined CONFIG_COMPACTION || defined CONFIG_CMA - /* * in mm/compaction.c */ diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 98cbdf6..739b405 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -443,6 +443,12 @@ static inline void set_page_order(struct page *page, int order) __SetPageBuddy(page); } +static inline void set_free_page_order(struct page *page, int order) +{ + set_page_private(page, order); + VM_BUG_ON(!PageBuddy(page)); +} + static inline void rmv_page_order(struct page *page) { __ClearPageBuddy(page); @@ -739,6 +745,17 @@ static void __free_pages_ok(struct page *page, unsigned int order) local_irq_restore(flags); } +#ifdef CONFIG_DYNAMIC_NUMA +void return_pages_to_zone(struct page *page, unsigned int order, + struct zone *zone) +{ + unsigned long flags; + local_irq_save(flags); + free_one_page(zone, page, order, get_freepage_migratetype(page)); + local_irq_restore(flags); +} +#endif + /* * Read access to zone->managed_pages is safe because it's unsigned long, * but we still need to serialize writers. Currently all callers of -- 1.8.2.2 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org