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ext4: don't show data=<mode> option if defaulted

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Previously, mount -l would show data=<mode> even if the ext4 default
journaling mode was being used. Change this to be consistent with the
rest of the options.

Ext4 already did the right thing when the journaling mode being used
matched the one specified in the superblock's default mount options. The
reason it failed to do the right thing for the ext4 defaults is that,
when set, they were never included in sbi->s_def_mount_opt (unlike the
superblock's defaults, which were).

Signed-off-by: Tyson Nottingham <tgnottingham@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Tyson Nottingham 2018-03-30 00:56:10 -04:00 committed by Theodore Ts'o
parent ceec03764a
commit 27f394a771
1 changed files with 5 additions and 2 deletions
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7
fs/ext4/super.c
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@ -4112,10 +4112,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
* cope, else JOURNAL_DATA
*/
if (jbd2_journal_check_available_features
(sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE))
(sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)) {
set_opt(sb, ORDERED_DATA);
else
sbi->s_def_mount_opt |= EXT4_MOUNT_ORDERED_DATA;
} else {
set_opt(sb, JOURNAL_DATA);
sbi->s_def_mount_opt |= EXT4_MOUNT_JOURNAL_DATA;
}
break;
case EXT4_MOUNT_ORDERED_DATA: