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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 8FBDDC433E6 for ; Wed, 10 Feb 2021 06:24:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 53A6B64E3E for ; Wed, 10 Feb 2021 06:24:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231718AbhBJGYE (ORCPT ); Wed, 10 Feb 2021 01:24:04 -0500 Received: from mga03.intel.com ([134.134.136.65]:39560 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231649AbhBJGXO (ORCPT ); Wed, 10 Feb 2021 01:23:14 -0500 IronPort-SDR: WNQ2EA1nDhPa68/gkolrNpiQ6wVFd8PFsK03XiLn13JBfyqlXXUfRAZA+V9oIEr/v3CXS+U50z l2eyw9SEM19A== X-IronPort-AV: E=McAfee;i="6000,8403,9890"; a="182086721" X-IronPort-AV: E=Sophos;i="5.81,167,1610438400"; d="scan'208";a="182086721" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2021 22:22:32 -0800 IronPort-SDR: TNyf62LmvAf7sbaHgJW7LIsoqbTIp/+X8VsK16OhK/J0iZd9plVx3ZJef4kCFv7cKh46HgDVDb TS+P450yT4ag== X-IronPort-AV: E=Sophos;i="5.81,167,1610438400"; d="scan'208";a="587246132" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2021 22:22:32 -0800 From: ira.weiny@intel.com To: Andrew Morton , David Sterba Cc: Ira Weiny , Christoph Hellwig , clm@fb.com, josef@toxicpanda.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH V2 2/8] mm/highmem: Convert memcpy_[to|from]_page() to kmap_local_page() Date: Tue, 9 Feb 2021 22:22:15 -0800 Message-Id: <20210210062221.3023586-3-ira.weiny@intel.com> X-Mailer: git-send-email 2.28.0.rc0.12.gb6a658bd00c9 In-Reply-To: <20210210062221.3023586-1-ira.weiny@intel.com> References: <20210210062221.3023586-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ira Weiny kmap_local_page() is more efficient and is well suited for these calls. Convert the kmap() to kmap_local_page() Cc: Andrew Morton Cc: Christoph Hellwig Signed-off-by: Ira Weiny --- New for V2 --- include/linux/highmem.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/linux/highmem.h b/include/linux/highmem.h index 736b6a9f144d..c17a175fe5fe 100644 --- a/include/linux/highmem.h +++ b/include/linux/highmem.h @@ -279,19 +279,19 @@ static inline void copy_highpage(struct page *to, struct page *from) static inline void memcpy_from_page(char *to, struct page *page, size_t offset, size_t len) { - char *from = kmap_atomic(page); + char *from = kmap_local_page(page); memcpy(to, from + offset, len); - kunmap_atomic(from); + kunmap_local(from); } static inline void memcpy_to_page(struct page *page, size_t offset, const char *from, size_t len) { - char *to = kmap_atomic(page); + char *to = kmap_local_page(page); memcpy(to + offset, from, len); - kunmap_atomic(to); + kunmap_local(to); } #endif /* _LINUX_HIGHMEM_H */ -- 2.28.0.rc0.12.gb6a658bd00c9