From patchwork Fri Aug 12 18:38:18 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: 9277657 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 9A22A60780 for ; Fri, 12 Aug 2016 18:42:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8FB9428AB6 for ; Fri, 12 Aug 2016 18:42:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 82EBD28AD2; Fri, 12 Aug 2016 18:42:05 +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 55AFC28AB6 for ; Fri, 12 Aug 2016 18:42:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752731AbcHLSlr (ORCPT ); Fri, 12 Aug 2016 14:41:47 -0400 Received: from mga02.intel.com ([134.134.136.20]:64597 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752744AbcHLSi6 (ORCPT ); Fri, 12 Aug 2016 14:38:58 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP; 12 Aug 2016 11:38:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,512,1464678000"; d="scan'208";a="747947288" Received: from black.fi.intel.com ([10.237.72.93]) by FMSMGA003.fm.intel.com with ESMTP; 12 Aug 2016 11:38:48 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 02881907; Fri, 12 Aug 2016 21:38:34 +0300 (EEST) From: "Kirill A. Shutemov" To: "Theodore Ts'o" , Andreas Dilger , Jan Kara , Andrew Morton Cc: Alexander Viro , Hugh Dickins , Andrea Arcangeli , 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: [PATCHv2 35/41] ext4: make ext4_da_page_release_reservation() aware about huge pages Date: Fri, 12 Aug 2016 21:38:18 +0300 Message-Id: <1471027104-115213-36-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1471027104-115213-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1471027104-115213-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For huge pages 'stop' must be within HPAGE_PMD_SIZE. Let's use hpage_size() in the BUG_ON(). We also need to change how we calculate lblk for cluster deallocation. Signed-off-by: Kirill A. Shutemov --- fs/ext4/inode.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 0133f6fc4bb8..84ccb4469e0b 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1558,7 +1558,7 @@ static void ext4_da_page_release_reservation(struct page *page, int num_clusters; ext4_fsblk_t lblk; - BUG_ON(stop > PAGE_SIZE || stop < length); + BUG_ON(stop > hpage_size(page) || stop < length); head = page_buffers(page); bh = head; @@ -1593,7 +1593,8 @@ static void ext4_da_page_release_reservation(struct page *page, * need to release the reserved space for that cluster. */ num_clusters = EXT4_NUM_B2C(sbi, to_release); while (num_clusters > 0) { - lblk = (page->index << (PAGE_SHIFT - inode->i_blkbits)) + + lblk = ((page->index + offset / PAGE_SIZE) << + (PAGE_SHIFT - inode->i_blkbits)) + ((num_clusters - 1) << sbi->s_cluster_bits); if (sbi->s_cluster_ratio == 1 || !ext4_find_delalloc_cluster(inode, lblk))