diff options
| author | Piotr Sarna <p.sarna@partner.samsung.com> | 2013-08-08 23:02:24 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-14 22:57:07 -0700 |
| commit | 6cd45319625bfc226c3d52bdafd3e1f5d7e04a67 (patch) | |
| tree | 2dd7eab85ec3fd342c7da8a34fb8bac58b74ad26 | |
| parent | a57425e942b49e729a62ccb4d420ae7c83762fe2 (diff) | |
ext4: fix mount/remount error messages for incompatible mount options
commit 6ae6514b33f941d3386da0dfbe2942766eab1577 upstream.
Commit 5688978 ("ext4: improve handling of conflicting mount options")
introduced incorrect messages shown while choosing wrong mount options.
First of all, both cases of incorrect mount options,
"data=journal,delalloc" and "data=journal,dioread_nolock" result in
the same error message.
Secondly, the problem above isn't solved for remount option: the
mismatched parameter is simply ignored. Moreover, ext4_msg states
that remount with options "data=journal,delalloc" succeeded, which is
not true.
To fix it up, I added a simple check after parse_options() call to
ensure that data=journal and delalloc/dioread_nolock parameters are
not present at the same time.
Signed-off-by: Piotr Sarna <p.sarna@partner.samsung.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/ext4/super.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b93de81d3d4b..8bbb14c5f774 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3232,7 +3232,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) } if (test_opt(sb, DIOREAD_NOLOCK)) { ext4_msg(sb, KERN_ERR, "can't mount with " - "both data=journal and delalloc"); + "both data=journal and dioread_nolock"); goto failed_mount; } if (test_opt(sb, DELALLOC)) @@ -4397,6 +4397,21 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data) goto restore_opts; } + if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) { + if (test_opt2(sb, EXPLICIT_DELALLOC)) { + ext4_msg(sb, KERN_ERR, "can't mount with " + "both data=journal and delalloc"); + err = -EINVAL; + goto restore_opts; + } + if (test_opt(sb, DIOREAD_NOLOCK)) { + ext4_msg(sb, KERN_ERR, "can't mount with " + "both data=journal and dioread_nolock"); + err = -EINVAL; + goto restore_opts; + } + } + if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) ext4_abort(sb, "Abort forced by user"); |