Re: next-20090310: ext4 hangs

[Jan Kara]

On Wed 25-03-09 18:18:43, Alexander Beregalov wrote:
> 2009/3/25 Jan Kara <jack@xxxxxxx>:
> >> > So, I think I need to try it on 2.6.29-rc7 again.
> >>   I've looked into this. Obviously, what's happenning is that we delete
> >> an inode and jbd2_journal_release_jbd_inode() finds inode is just under
> >> writeout in transaction commit and thus it waits. But it gets never woken
> >> up and because it has a handle from the transaction, every one eventually
> >> blocks on waiting for a transaction to finish.
> >>   But I don't really see how that can happen. The code is really
> >> straightforward and everything happens under j_list_lock... Strange.
> >  BTW: Is the system SMP?
> No, it is UP system.
  Even stranger. And do you have CONFIG_PREEMPT set?

> The bug exists even in 2.6.29, I posted it with a new topic.
  OK, I've sort-of expected this.

									Honza
-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/