From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f197.google.com (mail-pf0-f197.google.com [209.85.192.197]) by kanga.kvack.org (Postfix) with ESMTP id 888F16B000E for ; Tue, 10 Jul 2018 04:23:19 -0400 (EDT) Received: by mail-pf0-f197.google.com with SMTP id a20-v6so13530612pfi.1 for ; Tue, 10 Jul 2018 01:23:19 -0700 (PDT) Received: from mga09.intel.com (mga09.intel.com. [134.134.136.24]) by mx.google.com with ESMTPS id o3-v6si15422114pgr.521.2018.07.10.01.23.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 10 Jul 2018 01:23:18 -0700 (PDT) From: Zhang Yi Subject: [PATCH V2 1/4] kvm: remove redundant reserved page check Date: Wed, 11 Jul 2018 01:01:33 +0800 Message-Id: <3266d45a10db6d22e3978eacbe2683d43aec3100.1531241281.git.yi.z.zhang@linux.intel.com> In-Reply-To: References: Sender: owner-linux-mm@kvack.org List-ID: To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, pbonzini@redhat.com, dan.j.williams@intel.com, jack@suse.cz, hch@lst.de, yu.c.zhang@intel.com Cc: linux-mm@kvack.org, rkrcmar@redhat.com, yi.z.zhang@intel.com, Zhang Yi PageReserved() is already checked inside kvm_is_reserved_pfn(), remove it from kvm_set_pfn_dirty(). Signed-off-by: Zhang Yi Signed-off-by: Zhang Yu --- virt/kvm/kvm_main.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index c7b2e92..afb2e6e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1673,12 +1673,8 @@ EXPORT_SYMBOL_GPL(kvm_release_pfn_dirty); void kvm_set_pfn_dirty(kvm_pfn_t pfn) { - if (!kvm_is_reserved_pfn(pfn)) { - struct page *page = pfn_to_page(pfn); - - if (!PageReserved(page)) - SetPageDirty(page); - } + if (!kvm_is_reserved_pfn(pfn)) + SetPageDirty(pfn_to_page(pfn)); } EXPORT_SYMBOL_GPL(kvm_set_pfn_dirty); -- 2.7.4