Please do not post a new version with a minor compile fixes until there is a general agreement on the approach. Willy had comments which really need to be resolved first. And I do agree with him. Having an explicit tunable seems just wrong. Also does this [...] > Reported-by: kbuild test robot <lkp@xxxxxxxxx> really hold? Because it suggests that the problem has been spotted by the kbuild bot which is kinda unexpected... I suspect you have just added that for the minor compilation issue that you have fixed since the last version. -- Michal Hocko SUSE Labs