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path: root/fs/xfs/xfs_super.c
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Diffstat (limited to 'fs/xfs/xfs_super.c')
-rw-r--r--fs/xfs/xfs_super.c80
1 files changed, 34 insertions, 46 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index c7ac486ca5d3..e8f37bdc8354 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -331,13 +331,34 @@ xfs_set_inode_alloc(
return xfs_is_inode32(mp) ? maxagi : agcount;
}
-static bool
-xfs_buftarg_is_dax(
- struct super_block *sb,
- struct xfs_buftarg *bt)
+static int
+xfs_setup_dax_always(
+ struct xfs_mount *mp)
{
- return dax_supported(bt->bt_daxdev, bt->bt_bdev, sb->s_blocksize, 0,
- bdev_nr_sectors(bt->bt_bdev));
+ if (!mp->m_ddev_targp->bt_daxdev &&
+ (!mp->m_rtdev_targp || !mp->m_rtdev_targp->bt_daxdev)) {
+ xfs_alert(mp,
+ "DAX unsupported by block device. Turning off DAX.");
+ goto disable_dax;
+ }
+
+ if (mp->m_super->s_blocksize != PAGE_SIZE) {
+ xfs_alert(mp,
+ "DAX not supported for blocksize. 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
@@ -370,26 +391,19 @@ STATIC void
xfs_close_devices(
struct xfs_mount *mp)
{
- struct dax_device *dax_ddev = mp->m_ddev_targp->bt_daxdev;
-
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
- struct dax_device *dax_logdev = mp->m_logdev_targp->bt_daxdev;
xfs_free_buftarg(mp->m_logdev_targp);
xfs_blkdev_put(logdev);
- fs_put_dax(dax_logdev);
}
if (mp->m_rtdev_targp) {
struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
- struct dax_device *dax_rtdev = mp->m_rtdev_targp->bt_daxdev;
xfs_free_buftarg(mp->m_rtdev_targp);
xfs_blkdev_put(rtdev);
- fs_put_dax(dax_rtdev);
}
xfs_free_buftarg(mp->m_ddev_targp);
- fs_put_dax(dax_ddev);
}
/*
@@ -407,8 +421,6 @@ xfs_open_devices(
struct xfs_mount *mp)
{
struct block_device *ddev = mp->m_super->s_bdev;
- struct dax_device *dax_ddev = fs_dax_get_by_bdev(ddev);
- struct dax_device *dax_logdev = NULL, *dax_rtdev = NULL;
struct block_device *logdev = NULL, *rtdev = NULL;
int error;
@@ -418,8 +430,7 @@ xfs_open_devices(
if (mp->m_logname) {
error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
if (error)
- goto out;
- dax_logdev = fs_dax_get_by_bdev(logdev);
+ return error;
}
if (mp->m_rtname) {
@@ -433,25 +444,24 @@ xfs_open_devices(
error = -EINVAL;
goto out_close_rtdev;
}
- dax_rtdev = fs_dax_get_by_bdev(rtdev);
}
/*
* Setup xfs_mount buffer target pointers
*/
error = -ENOMEM;
- mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, dax_ddev);
+ mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev);
if (!mp->m_ddev_targp)
goto out_close_rtdev;
if (rtdev) {
- mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, dax_rtdev);
+ mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev);
if (!mp->m_rtdev_targp)
goto out_free_ddev_targ;
}
if (logdev && logdev != ddev) {
- mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, dax_logdev);
+ mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev);
if (!mp->m_logdev_targp)
goto out_free_rtdev_targ;
} else {
@@ -467,14 +477,9 @@ xfs_open_devices(
xfs_free_buftarg(mp->m_ddev_targp);
out_close_rtdev:
xfs_blkdev_put(rtdev);
- fs_put_dax(dax_rtdev);
out_close_logdev:
- if (logdev && logdev != ddev) {
+ if (logdev && logdev != ddev)
xfs_blkdev_put(logdev);
- fs_put_dax(dax_logdev);
- }
- out:
- fs_put_dax(dax_ddev);
return error;
}
@@ -1593,26 +1598,9 @@ 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)) {