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ext4: reject the 'commit' option on ext2 filesystems

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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@google.com>
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Link: https://lore.kernel.org/r/20220510183232.172615-1-ebiggers@kernel.org
This commit is contained in:
Eric Biggers 2022-05-10 11:32:32 -07:00 committed by Theodore Ts'o
parent b10b6278ae
commit cb8435dc8b
1 changed files with 1 additions and 0 deletions
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fs/ext4/super.c
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@ -1915,6 +1915,7 @@ 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,