[Bug 29162] Reiserfs hang with dataloss sometimes

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https://bugzilla.kernel.org/show_bug.cgi?id=29162

--- Comment #60 from Jeff Mahoney <jeffm@xxxxxxxx> ---
(In reply to Raúl from comment #57)
> Created attachment 121041 [details]
> dmesg for the oops (3.12.6)
> 
> I got this same hang on my laptop running Debian sid 3.12.6. Provided how
> unrepeatable this bug is I can't tell if this is happenning more or less
> often than before Jeff's changes.
> 
> I have run the proposed torture tests (thanks D.K.), but I think short
> shoots are not enough. I'll try overnight when I'm able to.


Thanks. The trace shows that we:

1) Have threads queued up on i_mutex
2) Have threads queued up on queue_log_writer holding i_mutex
3) Have a thread queued up on queue_log_writer holding i_mutex and the page
lock
4) Have a thread queued up on the page lock

Now to figure out what is causing the queue_log_writer condition to not
continue.

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