On Mon, 21 Jan 2019, Davidlohr Bueso wrote > Taking a sleeping lock to _only_ increment a variable is quite the > overkill, and pretty much all users do this. Furthermore, some drivers > (ie: infiniband and scif) that need pinned semantics can go to quite > some trouble to actually delay via workqueue (un)accounting for pinned > pages when not possible to acquire it. Reviewed-by: Christoph Lameter <cl@xxxxxxxxx>
