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fs/ext4: Narrow scope of DAX check in setflags

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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 <jack@suse.cz>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20200528150003.828793-2-ira.weiny@intel.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ira Weiny 2020-05-28 07:59:55 -07:00 committed by Theodore Ts'o
parent 2c567af418
commit ff694ab60c
1 changed files with 2 additions and 2 deletions
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4
fs/ext4/ioctl.c
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@ -393,9 +393,9 @@ flags_err:
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;
}