On Tue, 4 Apr 2017, Michal Hocko wrote: > NAK without a proper changelog. Seriously, we do not blindly apply > changes from other projects without a deep understanding of all > consequences.
Functionalitywise this is trivial. A page must be a slab page in order to be able to determine the slab cache of an object. Its definitely not ok if the page is not a slab page. The main issue that may exist here is the adding of overhead to a critical code path like kfree().