From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f49.google.com (mail-pa0-f49.google.com [209.85.220.49]) by kanga.kvack.org (Postfix) with ESMTP id CE85D828DE for ; Wed, 6 Jan 2016 13:01:28 -0500 (EST) Received: by mail-pa0-f49.google.com with SMTP id ho8so2316147pac.2 for ; Wed, 06 Jan 2016 10:01:28 -0800 (PST) Received: from mga03.intel.com (mga03.intel.com. [134.134.136.65]) by mx.google.com with ESMTP id fe1si3122701pac.200.2016.01.06.10.01.27 for ; Wed, 06 Jan 2016 10:01:27 -0800 (PST) From: Ross Zwisler Subject: [PATCH v7 7/9] ext2: call dax_pfn_mkwrite() for DAX fsync/msync Date: Wed, 6 Jan 2016 11:01:01 -0700 Message-Id: <1452103263-1592-8-git-send-email-ross.zwisler@linux.intel.com> In-Reply-To: <1452103263-1592-1-git-send-email-ross.zwisler@linux.intel.com> References: <1452103263-1592-1-git-send-email-ross.zwisler@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: Ross Zwisler , "H. Peter Anvin" , "J. Bruce Fields" , Theodore Ts'o , Alexander Viro , Andreas Dilger , Andrew Morton , Dan Williams , Dave Chinner , Dave Hansen , Ingo Molnar , Jan Kara , Jeff Layton , Matthew Wilcox , Matthew Wilcox , Thomas Gleixner , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org, x86@kernel.org, xfs@oss.sgi.com 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 Reviewed-by: Jan Kara --- 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org