On Thu, Jul 05, 2007 at 05:18:43PM +0300, Danny Braniss wrote: > > > Today, I got re@ permission and committed the destroy_dev_sched() KPI > > into the tree. As suggested by Nate Lawson, destroy_dev() tries to > > auto-detect "devdrn" deadlock condition and transforms destroy_dev() > > from d_close() csw method into destroy_dev_sched(). I together with > > Peter Holm tried to test the change as thoroughly as possible. > > > > The obvious problematic area are the races between device driver > > module unload and destroy_dev_sched(). At least smb(4) definitely > > has that race that shall be worked around by draining events with > > drain_dev_clone_events() and destroy_dev_drain(&cdevsw); see snp(4) > > change for example. > > > > Please, report issues caused by the patch to the list with me Cc:ed. > > Change of autodetection of deadlock in destroy_dev() was made in separate > > commit for ease of reverting. > > and today I got a chance to check it, and it works for me (iscsi_initiator). Today, I reverted the part of commit that tried to transform destroy_dev() from d_close() into destroy_dev_sched(). See kern_conf.c, rev. 1.208. You shall call destroy_dev_sched() explicitely.
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