On Wed, Jan 31, 2018 at 02:23:24PM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>
> 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 <darrick.wong@xxxxxxxxxx>
nit: Check alignment of the warning message (probably ok?)...
Reviewed-by: Bill O'Donnell <billodo@xxxxxxxxxx>
> ---
> 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) {
> --
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