ext4: show test_dummy_encryption mount option in /proc/mounts

commit 338affb548c243d2af25b1ca628e67819350de6b upstream.

When in effect, add "test_dummy_encryption" to _ext4_show_options() so
that it is shown in /proc/mounts and other relevant procfs files.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ae2f1caf853d2006019d07a3e2b4a985ebe3bd74..f88d4804c3a81bbd88626991d05aee585f4498c7 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2015,6 +2015,8 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
                SEQ_OPTS_PRINT("max_dir_size_kb=%u", sbi->s_max_dir_size_kb);
        if (test_opt(sb, DATA_ERR_ABORT))
                SEQ_OPTS_PUTS("data_err=abort");
+       if (DUMMY_ENCRYPTION_ENABLED(sbi))
+               SEQ_OPTS_PUTS("test_dummy_encryption");
 
        ext4_show_quota_options(seq, sb);
        return 0;