On Fri, 15 Feb 2019, Jason Gunthorpe wrote:
This looks just wrong... The algorithm should look like the one in umem
On another note, and considering infiniband (core) is allowed on most archs, do we want to relax the ordering guarantees from the compound atomic64_inc_return(pinned_vm) in ib_umem_get()? Looking at IB core and some of the drivers I don't see any particular constraints on the order the pinned_vm is touched - so ll/sc based archs could benefit with atomic64_inc_return_relaxed(). Thanks, Davidlohr
