Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752295Ab3CRLLs (ORCPT ); Mon, 18 Mar 2013 07:11:48 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:56009 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751950Ab3CRLLp (ORCPT ); Mon, 18 Mar 2013 07:11:45 -0400 X-IronPort-AV: E=Sophos;i="4.84,865,1355068800"; d="scan'208";a="6893860" From: Lin Feng To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, yinghai@kernel.org, penberg@kernel.org, jacob.shin@amd.com, Lin Feng Subject: [PATCH] x86: mm: add_pfn_range_mapped: use meaningful index to teach clean_sort_range() Date: Mon, 18 Mar 2013 18:21:33 +0800 Message-Id: <1363602093-11965-1-git-send-email-linfeng@cn.fujitsu.com> X-Mailer: git-send-email 1.8.0.1 X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/03/18 18:17:51, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/03/18 18:18:02, Serialize complete at 2013/03/18 18:18:02 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1309 Lines: 34 Since add_range_with_merge() return the max none zero element of the array, it's suffice to use it to instruct clean_sort_range() to do the sort. Or the former assignment by add_range_with_merge() is nonsense because clean_sort_range() will produce a accurate number of the sorted array and it never depends on nr_pfn_mapped. Cc: Jacob Shin Cc: Yinghai Lu Signed-off-by: Lin Feng --- arch/x86/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 59b7fc4..55ae904 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -310,7 +310,7 @@ static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn) { nr_pfn_mapped = add_range_with_merge(pfn_mapped, E820_X_MAX, nr_pfn_mapped, start_pfn, end_pfn); - nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_X_MAX); + nr_pfn_mapped = clean_sort_range(pfn_mapped, nr_pfn_mapped); max_pfn_mapped = max(max_pfn_mapped, end_pfn); -- 1.8.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/