On Sat, Nov 26, 2016 at 08:46:38AM -0500, Chris Mason wrote: > On Fri, Nov 25, 2016 at 10:03:25AM +0100, Christian Borntraeger wrote: > > FWIW, I still see the lockdep splat in btrfs in 4.9-rc5+ > > Filipe reworked the code to avoid taking the same lock twice. As far as I > can tell, this just needs some annotation.
Besides this log_mutex, we have another false lockdep warning around block_group_cache->data_rwsem, we can use down_read_nested() to get rid of it. Thanks, -liubo
