On Thu, Jul 07, 2022 at 10:36:33PM +1000, Dave Chinner wrote: > > > > Hmm, so what still uses pag_buf_lock? Are we still using it to > > serialize xfs_buf_rele calls? > > slow path lookup/insert and xfs_buf_rele calls. Note that we might be able to eventually remove the locking in rele if we switch the lookup slow path to use atomic_inc_unless_zero as well. But it would need a very careful audit.
