linux-ext4 - [PATCH] ext4: show test_dummy_encryption mount option in /proc/mounts

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Message-Id: <20180905185745.57102-1-ebiggers@kernel.org>
Date:   Wed,  5 Sep 2018 11:57:45 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     linux-ext4@...r.kernel.org, Theodore Ts'o <tytso@....edu>
Subject: [PATCH] ext4: show test_dummy_encryption mount option in /proc/mounts

From: Eric Biggers <ebiggers@...gle.com>

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@...gle.com>
---
 fs/ext4/super.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 5863fd22e90bb..6f5bd40ef341f 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2145,6 +2145,8 @@ 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;
-- 
2.19.0.rc2.392.g5ba43deb5a-goog