From patchwork Tue Jul 26 00:35:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kirill A . Shutemov" X-Patchwork-Id: 9247365 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 04FBC60869 for ; Tue, 26 Jul 2016 00:42:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E964C1FF15 for ; Tue, 26 Jul 2016 00:42:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DDBCF27AC2; Tue, 26 Jul 2016 00:42:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 914F627BE5 for ; Tue, 26 Jul 2016 00:42:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932163AbcGZAi5 (ORCPT ); Mon, 25 Jul 2016 20:38:57 -0400 Received: from mga03.intel.com ([134.134.136.65]:55312 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755422AbcGZAgH (ORCPT ); Mon, 25 Jul 2016 20:36:07 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga103.jf.intel.com with ESMTP; 25 Jul 2016 17:36:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,421,1464678000"; d="scan'208";a="1029010638" Received: from black.fi.intel.com ([10.237.72.93]) by fmsmga002.fm.intel.com with ESMTP; 25 Jul 2016 17:35:59 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 12144B64; Tue, 26 Jul 2016 03:35:48 +0300 (EEST) From: "Kirill A. Shutemov" To: "Theodore Ts'o" , Andreas Dilger , Jan Kara Cc: Alexander Viro , Hugh Dickins , Andrea Arcangeli , Andrew Morton , Dave Hansen , Vlastimil Babka , Matthew Wilcox , Ross Zwisler , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv1, RFC 29/33] ext4: handle huge pages in ext4_da_write_end() Date: Tue, 26 Jul 2016 03:35:31 +0300 Message-Id: <1469493335-3622-30-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1469493335-3622-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1469493335-3622-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Call ext4_da_should_update_i_disksize() for head page with offset relative to head page. Signed-off-by: Kirill A. Shutemov --- fs/ext4/inode.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 3df2cea763ce..744bba046268 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2998,7 +2998,6 @@ static int ext4_da_write_end(struct file *file, int ret = 0, ret2; handle_t *handle = ext4_journal_current_handle(); loff_t new_i_size; - unsigned long start, end; int write_mode = (int)(unsigned long)fsdata; if (write_mode == FALL_BACK_TO_NONDELALLOC) @@ -3006,8 +3005,6 @@ static int ext4_da_write_end(struct file *file, len, copied, page, fsdata); trace_ext4_da_write_end(inode, pos, len, copied); - start = pos & (PAGE_SIZE - 1); - end = start + copied - 1; /* * generic_write_end() will run mark_inode_dirty() if i_size @@ -3016,8 +3013,10 @@ static int ext4_da_write_end(struct file *file, */ new_i_size = pos + copied; if (copied && new_i_size > EXT4_I(inode)->i_disksize) { + struct page *head = compound_head(page); + unsigned long end = (pos & ~hpage_mask(head)) + copied - 1; if (ext4_has_inline_data(inode) || - ext4_da_should_update_i_disksize(page, end)) { + ext4_da_should_update_i_disksize(head, end)) { ext4_update_i_disksize(inode, new_i_size); /* We need to mark inode dirty even if * new_i_size is less that inode->i_size