Re: [PATCH v1 8/8] mm: kasan: Initial memory quarantine implementation

[Christoph Lameter]

On Fri, 19 Feb 2016, Dmitry Vyukov wrote:

> No, this does not work. We've tried.
> The problem is fragmentation. When all memory is occupied by slab,
> it's already too late to reclaim memory. Free objects are randomly
> scattered over memory, so if you have just 1% of live objects, the
> chances are that you won't be able to reclaim any single page.

Yes that is why slab objects *need* to be *movable*!!!