Hi,

Alasdair G Kergon wrote:
> The global _hash_lock should not be held (thereby locking out most dm ioctl 
> operations on any device) while the slow populate_table() runs.
> 
> I'm trying out a variant of the patch that drops and reacquires that lock.

OK, thanks for the confirmation.

I guess the variant itself will need dm_get() to avoid md
being stolen. Depending on that, I might change my patch.

Attached is a revised patch based on Mike Anderson's patch.

-- 
Jun'ichi Nomura, NEC Solutions (America), Inc.