Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752596AbbLHTVj (ORCPT ); Tue, 8 Dec 2015 14:21:39 -0500 Received: from mga02.intel.com ([134.134.136.20]:18650 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752209AbbLHTTT (ORCPT ); Tue, 8 Dec 2015 14:19:19 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,400,1444719600"; d="scan'208";a="9746646" From: Ross Zwisler To: linux-kernel@vger.kernel.org Cc: Ross Zwisler , "H. Peter Anvin" , "J. Bruce Fields" , "Theodore Ts'o" , Alexander Viro , Andreas Dilger , Dave Chinner , Ingo Molnar , Jan Kara , Jeff Layton , Matthew Wilcox , Thomas Gleixner , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@ml01.01.org, x86@kernel.org, xfs@oss.sgi.com, Andrew Morton , Dan Williams , Matthew Wilcox , Dave Hansen Subject: [PATCH v3 5/7] ext2: call dax_pfn_mkwrite() for DAX fsync/msync Date: Tue, 8 Dec 2015 12:18:43 -0700 Message-Id: <1449602325-20572-6-git-send-email-ross.zwisler@linux.intel.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1449602325-20572-1-git-send-email-ross.zwisler@linux.intel.com> References: <1449602325-20572-1-git-send-email-ross.zwisler@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1265 Lines: 40 To properly support the new DAX fsync/msync infrastructure filesystems need to call dax_pfn_mkwrite() so that DAX can track when user pages are dirtied. Signed-off-by: Ross Zwisler --- fs/ext2/file.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 11a42c5..2c88d68 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -102,8 +102,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, { struct inode *inode = file_inode(vma->vm_file); struct ext2_inode_info *ei = EXT2_I(inode); - int ret = VM_FAULT_NOPAGE; loff_t size; + int ret; sb_start_pagefault(inode->i_sb); file_update_time(vma->vm_file); @@ -113,6 +113,8 @@ static int ext2_dax_pfn_mkwrite(struct vm_area_struct *vma, size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; if (vmf->pgoff >= size) ret = VM_FAULT_SIGBUS; + else + ret = dax_pfn_mkwrite(vma, vmf); up_read(&ei->dax_sem); sb_end_pagefault(inode->i_sb); -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/