[PATCH 5.15 345/667] ext4: reject the commit option on ext2 filesystems

[Greg Kroah-Hartman]

From: Eric Biggers <ebiggers@xxxxxxxxxx>

[ Upstream commit cb8435dc8ba33bcafa41cf2aa253794320a3b8df ]

The 'commit' option is only applicable for ext3 and ext4 filesystems,
and has never been accepted by the ext2 filesystem driver, so the ext4
driver shouldn't allow it on ext2 filesystems.

This fixes a failure in xfstest ext4/053.

Fixes: 8dc0aa8cf0f7 ("ext4: check incompatible mount options while mounting ext2/3")
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Reviewed-by: Ritesh Harjani <ritesh.list@xxxxxxxxx>
Reviewed-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220510183232.172615-1-ebiggers@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/ext4/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d12f11c6fbf2..10d5ee6c3edd 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1934,6 +1934,7 @@ static const struct mount_opts {
 	 MOPT_EXT4_ONLY | MOPT_CLEAR},
 	{Opt_warn_on_error, EXT4_MOUNT_WARN_ON_ERROR, MOPT_SET},
 	{Opt_nowarn_on_error, EXT4_MOUNT_WARN_ON_ERROR, MOPT_CLEAR},
+	{Opt_commit, 0, MOPT_NO_EXT2},
 	{Opt_nojournal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM,
 	 MOPT_EXT4_ONLY | MOPT_CLEAR},
 	{Opt_journal_checksum, EXT4_MOUNT_JOURNAL_CHECKSUM,
-- 
2.35.1