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 E17196B000D for ; Thu, 17 Jan 2013 17:54:21 -0500 (EST) 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, 17 Jan 2013 17:54:20 -0500 Received: from d01relay07.pok.ibm.com (d01relay07.pok.ibm.com [9.56.227.147]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id 4D21738C8045 for ; Thu, 17 Jan 2013 17:54:19 -0500 (EST) Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay07.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r0HMsIND64946208 for ; Thu, 17 Jan 2013 17:54:18 -0500 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r0HMsHaJ022006 for ; Thu, 17 Jan 2013 17:54:18 -0500 From: Cody P Schafer Subject: [PATCH 7/9] mm: add helper ensure_zone_is_initialized() Date: Thu, 17 Jan 2013 14:52:59 -0800 Message-Id: <1358463181-17956-8-git-send-email-cody@linux.vnet.ibm.com> In-Reply-To: <1358463181-17956-1-git-send-email-cody@linux.vnet.ibm.com> References: <1358463181-17956-1-git-send-email-cody@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Linux MM , David Hansen Cc: LKML , Andrew Morton , Catalin Marinas , Cody P Schafer , Cody P Schafer From: Cody P Schafer ensure_zone_is_initialized() checks if a zone is in a empty & not initialized state (typically occuring after it is created in memory hotplugging), and, if so, calls init_currently_empty_zone() to initialize the zone. Signed-off-by: Cody P Schafer --- mm/memory_hotplug.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index c62bcca..bede456 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -253,6 +253,17 @@ static void fix_zone_id(struct zone *zone, unsigned long start_pfn, set_page_links(pfn_to_page(pfn), zid, nid, pfn); } +/* Can fail with -ENOMEM from allocating a wait table with vmalloc() or + * alloc_bootmem_node_nopanic() */ +static int __ref ensure_zone_is_initialized(struct zone *zone, + unsigned long start_pfn, unsigned long num_pages) +{ + if (!zone_is_initialized(zone)) + return init_currently_empty_zone(zone, start_pfn, num_pages, + MEMMAP_HOTPLUG); + return 0; +} + static int __meminit move_pfn_range_left(struct zone *z1, struct zone *z2, unsigned long start_pfn, unsigned long end_pfn) { -- 1.8.0.3 -- 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