From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from g1t5425.austin.hp.com ([15.216.225.55]:47000 "EHLO g1t5425.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755112AbcEBSvz (ORCPT ); Mon, 2 May 2016 14:51:55 -0400 From: Toshi Kani To: dan.j.williams@intel.com, jack@suse.cz, david@fromorbit.com Cc: hch@infradead.org, boaz@plexistor.com, tytso@mit.edu, adilger.kernel@dilger.ca, ross.zwisler@linux.intel.com, toshi.kani@hpe.com, micah.parrish@hpe.com, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/3] Add alignment check for DAX mount Date: Mon, 2 May 2016 12:42:55 -0600 Message-Id: <1462214578-27122-1-git-send-email-toshi.kani@hpe.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: When a partition is not aligned by 4KB, mount -o dax succeeds, but any read/write access to the filesystem fails, except for metadata update. Add alignment check to ext4, ext2, and xfs. v2: - Use a helper function via ->direct_access for the check. (Christoph Hellwig) - Call bdev_direct_access() with sector 0 for the check. (Boaz Harrosh) --- Toshi Kani (3): 1/3 ext4: Add alignment check for DAX mount 2/3 ext2: Add alignment check for DAX mount 3/3 xfs: Add alignment check for DAX mount --- fs/ext2/super.c | 21 +++++++++++++++++++-- fs/ext4/super.c | 20 ++++++++++++++++++-- fs/xfs/xfs_super.c | 23 +++++++++++++++++++---- 3 files changed, 56 insertions(+), 8 deletions(-)