On Mon, Apr 06, 2020 at 10:36:07AM -0400, Waiman Long wrote: > ZERO_OR_NULL_PTR is defined in slab.h. Using it may cause some header > file dependency problem. To guard against the possibility of 0-length > allocation request, how about just Why is all the kvalloc/kvfree crap in mm.h to begin with? slab.h is a more sensible place to put it. I had a patch to do that once, but I think it went stale before I posted it.
