From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:55084 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932095AbeAaXLb (ORCPT ); Wed, 31 Jan 2018 18:11:31 -0500 Date: Wed, 31 Jan 2018 17:11:25 -0600 From: Bill O'Donnell Subject: Re: [PATCH] xfs: don't allow DAX on reflink filesystems Message-ID: <20180131231125.GA5804@redhat.com> References: <20180131222324.GH4849@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180131222324.GH4849@magnolia> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: "Darrick J. Wong" Cc: xfs , Dave Chinner , Eric Sandeen On Wed, Jan 31, 2018 at 02:23:24PM -0800, Darrick J. Wong wrote: > From: Darrick J. Wong > > Now that reflink is no longer experimental, reject attempts to mount > with DAX until that whole mess gets sorted out. > > Signed-off-by: Darrick J. Wong nit: Check alignment of the warning message (probably ok?)... Reviewed-by: Bill O'Donnell > --- > fs/xfs/xfs_super.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c > index f436eec..fd34cf2 100644 > --- a/fs/xfs/xfs_super.c > +++ b/fs/xfs/xfs_super.c > @@ -1666,9 +1666,12 @@ xfs_fs_fill_super( > "DAX unsupported by block device. Turning off DAX."); > mp->m_flags &= ~XFS_MOUNT_DAX; > } > - if (xfs_sb_version_hasreflink(&mp->m_sb)) > + if (xfs_sb_version_hasreflink(&mp->m_sb)) { > xfs_alert(mp, > "DAX and reflink cannot be used together!"); > + error = -EINVAL; > + goto out_filestream_unmount; > + } > } > > if (mp->m_flags & XFS_MOUNT_DISCARD) { > -- > To unsubscribe from this list: send the line "unsubscribe linux-xfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html