On Wed 22-01-20 02:05:48, Shijie Luo wrote:
> Only when jh->b_jcount = 0 in jbd2_journal_put_journal_head, we are allowed
> to call __journal_remove_journal_head.
>
> Signed-off-by: Shijie Luo <luoshijie1@xxxxxxxxxx>
Thanks for the patch. You're right but given that
__journal_remove_journal_head() has exactly one caller and that checks for
jh->b_jcount == 0 just before calling __journal_remove_journal_head(), I
think the assertion is pretty pointless. So I'd rather just remove it
completely.
Honza
> ---
> fs/jbd2/journal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
> index 5e408ee24a1a..4f417a7f1ae0 100644
> --- a/fs/jbd2/journal.c
> +++ b/fs/jbd2/journal.c
> @@ -2556,7 +2556,7 @@ static void __journal_remove_journal_head(struct buffer_head *bh)
> {
> struct journal_head *jh = bh2jh(bh);
>
> - J_ASSERT_JH(jh, jh->b_jcount >= 0);
> + J_ASSERT_JH(jh, jh->b_jcount == 0);
> J_ASSERT_JH(jh, jh->b_transaction == NULL);
> J_ASSERT_JH(jh, jh->b_next_transaction == NULL);
> J_ASSERT_JH(jh, jh->b_cp_transaction == NULL);
> --
> 2.19.1
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
