Re: [PATCH] ext4: reject the 'commit' option on ext2 filesystems

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On Tue, May 10, 2022 at 11:32:32AM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
> 
> 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>

Good catch, thanks.

Reviewed-by: Lukas Czerner <lczerner@xxxxxxxxxx>

> ---
>  fs/ext4/super.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 1847b46af8083..69d67724df24f 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1913,6 +1913,7 @@ 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,
> 
> base-commit: 23e3d7f7061f8682c751c46512718f47580ad8f0
> -- 
> 2.36.1
> 




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