linux-ext4 - Re: next-20090310: ext4 hangs

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Date:	Wed, 25 Mar 2009 18:18:43 +0300
From:	Alexander Beregalov <a.beregalov@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Theodore Tso <tytso@....edu>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	linux-ext4@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: next-20090310: ext4 hangs

2009/3/25 Jan Kara <jack@...e.cz>:
>> > 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.

The bug exists even in 2.6.29, I posted it with a new topic.
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