On Thu, Aug 08, 2019 at 09:54:03AM +0200, Thomas Gleixner wrote: > > I know. But the problem here is that normally PG_locked is used together > > with wait_on_page_bit_*, but this one instances uses the bit spinlock > > helpers. This is the equivalent of calling spin_lock on a struct mutex > > rather than having a mutex_lock_spin helper for this case. > > Yes, I know :(
But this means we should exclude slub from the bit_spin_lock removal. It really should use it's own version of it anyhow insted of pretending that the page lock is a bit spinlock. > > > Does SLUB work on -rt at all? > > It's the only allocator we support with a few tweaks :) What do you do about this particular piece of code there?
