diff options
| author |  Christoph Hellwig <hch@lst.de>
| 2021-11-29 11:21:41 +0100 |
|---|---|---|
| committer |  Dan Williams <dan.j.williams@intel.com>
| 2021-12-04 08:58:51 -0800 |
| commit | 679a99495b8fda800037b25af8cd990eb7dd72c9 (patch) | |
| tree | 6aaad28998efd24e0bb78ee1edf21fe53b927cb0 | |
| parent | dax: move the partition alignment check into fs_dax_get_by_bdev (diff) | |
| download | linux-679a99495b8fda800037b25af8cd990eb7dd72c9.tar.gz linux-679a99495b8fda800037b25af8cd990eb7dd72c9.tar.bz2 linux-679a99495b8fda800037b25af8cd990eb7dd72c9.zip | |
xfs: factor out a xfs_setup_dax_always helper
Factor out another DAX setup helper to simplify future changes. Also
move the experimental warning after the checks to not clutter the log
too much if the setup failed.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20211129102203.2243509-8-hch@lst.de
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | fs/xfs/xfs_super.c | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index e21459f9923a..875fd3151d6c 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -340,6 +340,32 @@ xfs_buftarg_is_dax( bdev_nr_sectors(bt->bt_bdev)); } +static int +xfs_setup_dax_always( + struct xfs_mount *mp) +{ + struct super_block *sb = mp->m_super; + + if (!xfs_buftarg_is_dax(sb, mp->m_ddev_targp) && + (!mp->m_rtdev_targp || !xfs_buftarg_is_dax(sb, mp->m_rtdev_targp))) { + xfs_alert(mp, + "DAX unsupported by block device. Turning off DAX."); + goto disable_dax; + } + + if (xfs_has_reflink(mp)) { + xfs_alert(mp, "DAX and reflink cannot be used together!"); + return -EINVAL; + } + + xfs_warn(mp, "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); + return 0; + +disable_dax: + xfs_mount_set_dax_mode(mp, XFS_DAX_NEVER); + return 0; +} + STATIC int xfs_blkdev_get( xfs_mount_t *mp, @@ -1593,26 +1619,9 @@ xfs_fs_fill_super( sb->s_flags |= SB_I_VERSION; if (xfs_has_dax_always(mp)) { - bool rtdev_is_dax = false, datadev_is_dax; - - xfs_warn(mp, - "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); - - datadev_is_dax = xfs_buftarg_is_dax(sb, mp->m_ddev_targp); - if (mp->m_rtdev_targp) - rtdev_is_dax = xfs_buftarg_is_dax(sb, - mp->m_rtdev_targp); - if (!rtdev_is_dax && !datadev_is_dax) { - xfs_alert(mp, - "DAX unsupported by block device. Turning off DAX."); - xfs_mount_set_dax_mode(mp, XFS_DAX_NEVER); - } - if (xfs_has_reflink(mp)) { - xfs_alert(mp, - "DAX and reflink cannot be used together!"); - error = -EINVAL; + error = xfs_setup_dax_always(mp); + if (error) goto out_filestream_unmount; - } } if (xfs_has_discard(mp)) { |