Re: [PATCH v2] btrfs: honor path->skip_locking in backref code

2019-02-15 Thread David Sterba
On Wed, Feb 13, 2019 at 02:27:04PM +0800, Qu Wenruo wrote: > From: Josef Bacik > > Qgroups will do the old roots lookup at delayed ref time, which could be > while walking down the extent root while running a delayed ref. This > should be fine, except we specifically lock eb's in the backref wal

Re: [PATCH v2] btrfs: honor path->skip_locking in backref code

2019-02-13 Thread Filipe Manana
On Wed, Feb 13, 2019 at 11:33 AM Qu Wenruo wrote: > > From: Josef Bacik > > Qgroups will do the old roots lookup at delayed ref time, which could be > while walking down the extent root while running a delayed ref. This > should be fine, except we specifically lock eb's in the backref walking >