On Wed, 26 Sep 2018 16:22:27 +0200 Michal Hocko <mho...@kernel.org> wrote:
> > MPOL_PREFERRED is handled by policy_node() before we call > > __alloc_pages_nodemask. > > __GFP_THISNODE is applied only when we are not using > > __GFP_DIRECT_RECLAIM which is handled in alloc_hugepage_direct_gfpmask > > now. > > Lastly MPOL_BIND wasn't handled explicitly but in the end the removed > > late check would remove __GFP_THISNODE for it as well. So in the end we > > are doing the same thing unless I miss something > > Forgot to add. One notable exception would be that the previous code > would allow to hit > WARN_ON_ONCE(policy->mode == MPOL_BIND && (gfp & __GFP_THISNODE)); > in policy_node if the requested node (e.g. cpu local one) was outside of > the mbind nodemask. This is not possible now. We haven't heard about any > such warning yet so it is unlikely that it happens though. Perhaps a changelog addition is needed to cover the above? I assume that David's mbind() concern has gone away. No acks or reviewed-by's yet?
