Re: [PATCH 06/14] bcon: add a release work struct

[Andrew Morton]

On Thu,  9 May 2013 16:43:04 -0400 Joern Engel <joern@xxxxxxxxx> wrote:

> The final bcon_put() can be called from atomic context, by way of
> bio_endio().  In that case we would sleep in invalidate_mapping_pages(),
> with the usual unhappy results.
> 
> In nearly a year of production use, I have only seen a matching
> backtrace once.  There was a second known issue that could be reproduced
> by "yes h > /proc/sysrq-trigger" and concurrently pulling and replugging
> the blockconsole device.  It took be somewhere around 30 pulls and sore
> thumbs to reproduce and I never found the time to get to the bottom of
> it.  Quite likely the two issues are identical.

This fix should be folded into the base patch?
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