On Wed, Jun 17, 2020 at 04:23:04PM +0000, Christopher Lameter wrote: > On Tue, 16 Jun 2020, William Kucharski wrote: > > > Other mm routines such as kfree() and kzfree() silently do the right > > thing if passed a NULL pointer, so ksize() should do the same. > > Ok so the size of an no object pointer is zero? Ignoring the freeing > of a nonexisting object makes sense. But determining it size?
ksize() is misnamed. It's not the size of the object, it's the number of bytes allocated for that object. A NULL pointer represents a freed object, or one that was never allocated in the first place. Clearly that's 0 bytes. What other answer would make sense?
