From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f182.google.com (mail-ob0-f182.google.com [209.85.214.182]) by kanga.kvack.org (Postfix) with ESMTP id DAD0F6B0038 for ; Fri, 13 Feb 2015 04:18:15 -0500 (EST) Received: by mail-ob0-f182.google.com with SMTP id nt9so17448189obb.13 for ; Fri, 13 Feb 2015 01:18:15 -0800 (PST) Received: from szxga03-in.huawei.com (szxga03-in.huawei.com. [119.145.14.66]) by mx.google.com with ESMTPS id n145si842866oig.14.2015.02.13.01.18.13 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 13 Feb 2015 01:18:15 -0800 (PST) From: Sheng Yong Subject: [PATCH] memory hotplug: Use macro to switch between section and pfn Date: Fri, 13 Feb 2015 09:13:23 +0000 Message-ID: <1423818803-202364-1-git-send-email-shengyong1@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: akpm@linux-foundation.org Cc: linux-mm@kvack.org Use macro section_nr_to_pfn and pfn_to_section_nr to switch between section and pfn, instead of bit operations, no semantic changes. Signed-off-by: Sheng Yong --- drivers/base/memory.c | 2 +- mm/memory_hotplug.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 85be040..8f6d988 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -228,7 +228,7 @@ memory_block_action(unsigned long phys_index, unsigned long action, int online_t struct page *first_page; int ret; - start_pfn = phys_index << PFN_SECTION_SHIFT; + start_pfn = section_nr_to_pfn(phys_index); first_page = pfn_to_page(start_pfn); switch (action) { diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index b82b61e..2afda10 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -502,7 +502,7 @@ int __ref __add_pages(int nid, struct zone *zone, unsigned long phys_start_pfn, end_sec = pfn_to_section_nr(phys_start_pfn + nr_pages - 1); for (i = start_sec; i <= end_sec; i++) { - err = __add_section(nid, zone, i << PFN_SECTION_SHIFT); + err = __add_section(nid, zone, section_nr_to_pfn(i)); /* * EEXIST is finally dealt with by ioresource collision -- 1.8.3.4 -- 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