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Re: Lost JBD fix [message #14936 is a reply to message #14934]

Wed, 11 July 2007 17:55

Chuck Ebbert
Messages: 4
Registered: July 2007

Junior Member

On 07/09/2007 02:14 PM, Jan Kara wrote:
> Hi Andrew,
>
> it seems we've accidentally lost one JBD fix (probably it was my mistake
> when rediffing some checkpointing changes) as Kirill has noted. A transaction
> can currently be released when there are still some buffers on one of its
> checkpointing lists. Attached patch should fix it (it still seems to apply
> fine). Please apply it. Thanks.
>
> Honza
>
>
> ------------------------------------------------------------ ------------
>
> We have to check that also the second checkpoint list is non-empty before
> dropping the transaction.
>
> Signed-off-by: Jan Kara <jack@suse.cz>
>
> diff -rupX /home/jack/.kerndiffexclude linux-2.6.16-rc1/fs/jbd/commit.c linux-2.6.16-rc1-1-checkpoint-fix/fs/jbd/commit.c
> --- linux-2.6.16-rc1/fs/jbd/commit.c 2006-01-15 00:20:12.000000000 +0100
> +++ linux-2.6.16-rc1-1-checkpoint-fix/fs/jbd/commit.c 2006-01-17 23:35:19.000000000 +0100
> @@ -829,7 +829,8 @@ restart_loop:
> journal->j_committing_transaction = NULL;
> spin_unlock(&journal->j_state_lock);
>
> - if (commit_transaction->t_checkpoint_list == NULL) {
> + if (commit_transaction->t_checkpoint_list == NULL &&
> + commit_transaction->t_checkpoint_io_list == NULL) {
> __journal_drop_transaction(journal, commit_transaction);
> } else {
> if (journal->j_checkpoint_transactions == NULL) {

Critical bugfix -- 2.6.22-stable (no earlier versions) should get
this too, right?

If so, can we get this merged into 2.6.23-rc soon?

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[Message index]

		Lost JBD fix By: Jan Kara on Mon, 09 July 2007 18:14
		Re: Lost JBD fix By: Chuck Ebbert on Wed, 11 July 2007 17:55
		Re: Lost JBD fix By: Jan Kara on Fri, 13 July 2007 17:16

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