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Date:   Tue, 23 Apr 2019 14:33:53 +0000
From:   "Banerjee, Debabrata" <>
To:     Theodore Ts'o <>,
        Andreas Dilger <>,
        "" <>,
        Dmitry Monakhov <>,
        "" <>
Subject: Re: [PATCH] ext4: bad mount opts in no journal mode


´╗┐On 4/11/19, 5:49 PM, "Debabrata Banerjee" <> wrote:

    commit 1e381f60dad9 ("ext4: do not allow journal_opts for fs w/o journal")
    Instead of removing EXT4_MOUNT_JOURNAL_CHECKSUM from s_def_mount_opt as
    I assume was intended, all other options were blown away leading to
    _ext4_show_options() output being incorrect. I don't see why this or
    other journal related flags should be removed from s_def_mount_opt
    regardless, it is only used for comparison to display opts, and we
    already made sure they couldn't be set.
    Signed-off-by: Debabrata Banerjee <>
     fs/ext4/super.c | 1 -
     1 file changed, 1 deletion(-)
    diff --git a/fs/ext4/super.c b/fs/ext4/super.c
    index 6ed4eb81e674..63eef29666e0 100644
    --- a/fs/ext4/super.c
    +++ b/fs/ext4/super.c
    @@ -4238,7 +4238,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
     				 "data=, fs mounted w/o journal");
     			goto failed_mount_wq;
    -		sbi->s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM;
     		clear_opt(sb, JOURNAL_CHECKSUM);
     		clear_opt(sb, DATA_FLAGS);
     		sbi->s_journal = NULL;

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