commit 80e96c5484be788f277eead9cabf88cf8e430419
author Mike Snitzer <snitzer@redhat.com> Fri Nov 07 15:09:46 2014 -0500
committer Mike Snitzer <snitzer@redhat.com> Wed Nov 19 11:25:36 2014 -0500
tree 25054660674523866c2410ac9f79fa28414afceb
parent d67ee213fa5700c7da526fe5bcccd485cfa63d8b

dm thin: do not allow thin device activation while pool is suspended

Otherwise IO could be issued to the pool while it is suspended.

Care was taken to properly interlock between the thin and thin-pool
targets when accessing the pool's 'suspended' flag.  The thin_ctr will
not add a new thin device to the pool's active_thins list if the pool is
susepended.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>