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[2620:137:e000::1:20]) by mx.google.com with ESMTP id co12-20020a17090afe8c00b00233d4df537asi13351095pjb.158.2023.03.06.18.36.44; Mon, 06 Mar 2023 18:36:56 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229995AbjCGC0d (ORCPT + 99 others); Mon, 6 Mar 2023 21:26:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229914AbjCGC02 (ORCPT ); Mon, 6 Mar 2023 21:26:28 -0500 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59CDF4D606 for ; Mon, 6 Mar 2023 18:26:13 -0800 (PST) Received: from dggpemm500014.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4PVzl115ntz16PDB; Tue, 7 Mar 2023 10:23:25 +0800 (CST) Received: from localhost.localdomain (10.175.112.125) by dggpemm500014.china.huawei.com (7.185.36.153) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Tue, 7 Mar 2023 10:26:10 +0800 From: Wupeng Ma To: , , , CC: , , , Subject: [PATCH v2 -next 2/3] x86/mm/pat: Cleanup unused parameter in follow_phys Date: Tue, 7 Mar 2023 10:26:05 +0800 Message-ID: <20230307022606.2367399-3-mawupeng1@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230307022606.2367399-1-mawupeng1@huawei.com> References: <20230307022606.2367399-1-mawupeng1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpemm500014.china.huawei.com (7.185.36.153) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1759674752367557836?= X-GMAIL-MSGID: =?utf-8?q?1759674752367557836?= From: Ma Wupeng Parameter flags is always zero in caller untrack_pfn() and track_pfn_copy(). let's drop it. Signed-off-by: Ma Wupeng --- arch/x86/mm/pat/memtype.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/arch/x86/mm/pat/memtype.c b/arch/x86/mm/pat/memtype.c index 4fb1e89f32e4..3ec025011c90 100644 --- a/arch/x86/mm/pat/memtype.c +++ b/arch/x86/mm/pat/memtype.c @@ -951,8 +951,7 @@ static void free_pfn_range(u64 paddr, unsigned long size) } static int follow_phys(struct vm_area_struct *vma, unsigned long address, - unsigned int flags, unsigned long *prot, - resource_size_t *phys) + unsigned long *prot, resource_size_t *phys) { int ret = -EINVAL; pte_t *ptep, pte; @@ -965,9 +964,6 @@ static int follow_phys(struct vm_area_struct *vma, unsigned long address, goto out; pte = *ptep; - if ((flags & FOLL_WRITE) && !pte_write(pte)) - goto unlock; - *prot = pgprot_val(pte_pgprot(pte)); *phys = (resource_size_t)pte_pfn(pte) << PAGE_SHIFT; @@ -997,7 +993,7 @@ int track_pfn_copy(struct vm_area_struct *vma) * reserve the whole chunk covered by vma. We need the * starting address and protection from pte. */ - if (follow_phys(vma, vma->vm_start, 0, &prot, &paddr)) { + if (follow_phys(vma, vma->vm_start, &prot, &paddr)) { WARN_ON_ONCE(1); return -EINVAL; } @@ -1084,7 +1080,7 @@ void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn, /* free the chunk starting from pfn or the whole chunk */ paddr = (resource_size_t)pfn << PAGE_SHIFT; if (!paddr && !size) { - if (follow_phys(vma, vma->vm_start, 0, &prot, &paddr)) { + if (follow_phys(vma, vma->vm_start, &prot, &paddr)) { WARN_ON_ONCE(1); return; }