Re: INFO: task hung in sync_blockdev

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> > It seems multiple processes deadlocked on the bd_mutex. 
> > Unfortunately there's no backtrace for the lock acquisitions,
> > so it's hard to see the exact sequence.
> 
> Well, all in the report points to a situation where some IO was submitted
> to the block device and never completed (more exactly it took longer than
> those 120s to complete that IO). It would need more digging into the

Are you sure? I didn't think outstanding IO would take bd_mutex.

-Andi

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