From: Ira Weiny <ira.we...@intel.com>

When preventing DAX and journaling on an inode.  Use the effective DAX
check rather than the mount option.

This will be required to support per inode DAX flags.

Reviewed-by: Jan Kara <j...@suse.cz>
Signed-off-by: Ira Weiny <ira.we...@intel.com>
---
 fs/ext4/ioctl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index bfc1281fc4cb..5813e5e73eab 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -393,9 +393,9 @@ static int ext4_ioctl_setflags(struct inode *inode,
        if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
                /*
                 * Changes to the journaling mode can cause unsafe changes to
-                * S_DAX if we are using the DAX mount option.
+                * S_DAX if the inode is DAX
                 */
-               if (test_opt(inode->i_sb, DAX)) {
+               if (IS_DAX(inode)) {
                        err = -EBUSY;
                        goto flags_out;
                }
-- 
2.25.1

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