From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 788C5C43215 for ; Thu, 28 Nov 2019 01:03:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2D51F2158A for ; Thu, 28 Nov 2019 01:03:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D51F2158A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 7C9006B04F2; Wed, 27 Nov 2019 20:03:49 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 751996B04F4; Wed, 27 Nov 2019 20:03:49 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 640B26B04F5; Wed, 27 Nov 2019 20:03:49 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0152.hostedemail.com [216.40.44.152]) by kanga.kvack.org (Postfix) with ESMTP id 494BB6B04F2 for ; Wed, 27 Nov 2019 20:03:49 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 0237F181AEF10 for ; Thu, 28 Nov 2019 01:03:49 +0000 (UTC) X-FDA: 76203888978.26.desk57_41db71e97c43 X-HE-Tag: desk57_41db71e97c43 X-Filterd-Recvd-Size: 1934 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by imf11.hostedemail.com (Postfix) with ESMTP for ; Thu, 28 Nov 2019 01:03:48 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Nov 2019 17:03:46 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,251,1571727600"; d="scan'208";a="221159840" Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by orsmga002.jf.intel.com with ESMTP; 27 Nov 2019 17:03:44 -0800 From: Wei Yang To: akpm@linux-foundation.org Cc: kirill.shutemov@linux.intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wei Yang Subject: [PATCH 1/2] mm/page_vma_mapped: use PMD_SIZE instead of calculating it Date: Thu, 28 Nov 2019 09:03:20 +0800 Message-Id: <20191128010321.21730-1-richardw.yang@linux.intel.com> X-Mailer: git-send-email 2.17.1 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: At this point, we are sure page is PageTransHuge, which means hpage_nr_pages is HPAGE_PMD_NR. This is safe to use PMD_SIZE instead of calculating it. Signed-off-by: Wei Yang --- mm/page_vma_mapped.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c index eff4b4520c8d..76e03650a3ab 100644 --- a/mm/page_vma_mapped.c +++ b/mm/page_vma_mapped.c @@ -223,7 +223,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw) if (pvmw->address >= pvmw->vma->vm_end || pvmw->address >= __vma_address(pvmw->page, pvmw->vma) + - hpage_nr_pages(pvmw->page) * PAGE_SIZE) + PMD_SIZE) return not_found(pvmw); /* Did we cross page table boundary? */ if (pvmw->address % PMD_SIZE == 0) { -- 2.17.1