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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 93316C4321D for ; Thu, 16 Aug 2018 09:18:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D8FE72148C for ; Thu, 16 Aug 2018 09:18:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D8FE72148C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baidu.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390394AbeHPMPJ (ORCPT ); Thu, 16 Aug 2018 08:15:09 -0400 Received: from mx60.baidu.com ([61.135.168.60]:30992 "EHLO tc-sys-mailedm03.tc.baidu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2390348AbeHPMPJ (ORCPT ); Thu, 16 Aug 2018 08:15:09 -0400 Received: from localhost (cp01-cos-dev01.cp01.baidu.com [10.92.119.46]) by tc-sys-mailedm03.tc.baidu.com (Postfix) with ESMTP id E46BC624007; Thu, 16 Aug 2018 17:17:37 +0800 (CST) From: Li RongQing To: Andrew Morton , Dan Williams , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Michal Hocko , "Kirill A. Shutemov" , Matthew Wilcox , Souptick Joarder Subject: [PATCH] mm: introduce kvvirt_to_page() helper Date: Thu, 16 Aug 2018 17:17:37 +0800 Message-Id: <1534411057-26276-1-git-send-email-lirongqing@baidu.com> X-Mailer: git-send-email 1.7.10.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The new helper returns address mapping page, which has several users in individual subsystem, like mem_to_page in xfs_buf.c and pgv_to_page in af_packet.c, after this, they can be unified Signed-off-by: Zhang Yu Signed-off-by: Li RongQing --- include/linux/mm.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 68a5121694ef..bb34a3c71df5 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -599,6 +599,14 @@ static inline void *kvcalloc(size_t n, size_t size, gfp_t flags) return kvmalloc_array(n, size, flags | __GFP_ZERO); } +static inline struct page *kvvirt_to_page(const void *addr) +{ + if (!is_vmalloc_addr(addr)) + return virt_to_page(addr); + else + return vmalloc_to_page(addr); +} + extern void kvfree(const void *addr); static inline atomic_t *compound_mapcount_ptr(struct page *page) -- 2.16.2