Re: [PATCHSET] blkcg: accumulated blkcg updates

[Vivek Goyal]

On Tue, Mar 06, 2012 at 10:07:09AM -0500, Vivek Goyal wrote:

[..]
> 
> My system is hanging during reboot. Last message I see is "Detaching DM
> devices" and nothing happens after that. I shall have to do some more 
> testing to figure out when did that start happening.

Ok, git bisect shows that very first patch to drain the queue is culprit.

9e5b9f8 block: blk-throttle should be drained regardless of q->elevator

Will do some more debugging.

Thanks
Vivek

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