| Re: Lost JBD fix [message #14940 is a reply to message #14936] |
Fri, 13 July 2007 17:16  |
Jan Kara
Messages: 13
Registered: July 2007
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Junior Member |
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On Wed 11-07-07 13:55:30, Chuck Ebbert wrote:
> 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?
Yes, the bugfix is probably obvious enough to go into -stable.
Honza
--
Jan Kara <jack@suse.cz>
SuSE CR Labs
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