From patchwork Fri May 6 21:53:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Verma, Vishal L" X-Patchwork-Id: 9036561 Return-Path: X-Original-To: patchwork-linux-block@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BC39CBF29F for ; Fri, 6 May 2016 21:54:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DF41320218 for ; Fri, 6 May 2016 21:54:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1022E202E9 for ; Fri, 6 May 2016 21:54:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758987AbcEFVyD (ORCPT ); Fri, 6 May 2016 17:54:03 -0400 Received: from mga02.intel.com ([134.134.136.20]:5710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758265AbcEFVyB (ORCPT ); Fri, 6 May 2016 17:54:01 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP; 06 May 2016 14:54:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,588,1455004800"; d="scan'208";a="960557239" Received: from omniknight.lm.intel.com ([10.232.112.171]) by fmsmga001.fm.intel.com with ESMTP; 06 May 2016 14:54:00 -0700 From: Vishal Verma To: linux-nvdimm@lists.01.org Cc: Vishal Verma , linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, xfs@oss.sgi.com, linux-ext4@vger.kernel.org, linux-mm@kvack.org, Ross Zwisler , Dan Williams , Dave Chinner , Jan Kara , Jens Axboe , Andrew Morton , linux-kernel@vger.kernel.org, Christoph Hellwig , Jeff Moyer , Boaz Harrosh , "Kirill A. Shutemov" Subject: [PATCH v5 5/5] dax: fix a comment in dax_zero_page_range and dax_truncate_page Date: Fri, 6 May 2016 15:53:11 -0600 Message-Id: <1462571591-3361-6-git-send-email-vishal.l.verma@intel.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1462571591-3361-1-git-send-email-vishal.l.verma@intel.com> References: <1462571591-3361-1-git-send-email-vishal.l.verma@intel.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Spam-Status: No, score=-9.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The distinction between PAGE_SIZE and PAGE_CACHE_SIZE was removed in 09cbfea mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros The comments for the above functions described a distinction between those, that is now redundant, so remove those paragraphs Cc: Kirill A. Shutemov Signed-off-by: Vishal Verma Reviewed-by: Jan Kara --- fs/dax.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index d8c974e..b8fa85a 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1221,12 +1221,6 @@ static bool dax_range_is_aligned(struct block_device *bdev, * page in a DAX file. This is intended for hole-punch operations. If * you are truncating a file, the helper function dax_truncate_page() may be * more convenient. - * - * We work in terms of PAGE_SIZE here for commonality with - * block_truncate_page(), but we could go down to PAGE_SIZE if the filesystem - * took care of disposing of the unnecessary blocks. Even if the filesystem - * block size is smaller than PAGE_SIZE, we have to zero the rest of the page - * since the file might be mmapped. */ int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length, get_block_t get_block) @@ -1279,12 +1273,6 @@ EXPORT_SYMBOL_GPL(dax_zero_page_range); * * Similar to block_truncate_page(), this function can be called by a * filesystem when it is truncating a DAX file to handle the partial page. - * - * We work in terms of PAGE_SIZE here for commonality with - * block_truncate_page(), but we could go down to PAGE_SIZE if the filesystem - * took care of disposing of the unnecessary blocks. Even if the filesystem - * block size is smaller than PAGE_SIZE, we have to zero the rest of the page - * since the file might be mmapped. */ int dax_truncate_page(struct inode *inode, loff_t from, get_block_t get_block) {