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    Subject[PATCH 3.17 163/319] ext4: enable journal checksum when metadata checksum feature enabled
    Date
    3.17-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: "Darrick J. Wong" <darrick.wong@oracle.com>

    commit 98c1a7593fa355fda7f5a5940c8bf5326ca964ba upstream.

    If metadata checksumming is turned on for the FS, we need to tell the
    journal to use checksumming too.

    Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
    Signed-off-by: Theodore Ts'o <tytso@mit.edu>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/ext4/super.c | 4 ++++
    1 file changed, 4 insertions(+)

    --- a/fs/ext4/super.c
    +++ b/fs/ext4/super.c
    @@ -3498,6 +3498,10 @@ static int ext4_fill_super(struct super_
    #ifdef CONFIG_EXT4_FS_POSIX_ACL
    set_opt(sb, POSIX_ACL);
    #endif
    + /* don't forget to enable journal_csum when metadata_csum is enabled. */
    + if (ext4_has_metadata_csum(sb))
    + set_opt(sb, JOURNAL_CHECKSUM);
    +
    if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_DATA)
    set_opt(sb, JOURNAL_DATA);
    else if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_ORDERED)



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