Re: [PATCH v4 09/36] mm/slab: introduce SLAB_NO_OBJ_EXT to avoid obj_ext creation

Pasha Tatashin
2024-02-22T00:10:35Z

On Wed, Feb 21, 2024 at 2:41 PM Suren Baghdasaryan <surenb@google.com> wrote:
>
> Slab extension objects can't be allocated before slab infrastructure is
> initialized. Some caches, like kmem_cache and kmem_cache_node, are created
> before slab infrastructure is initialized. Objects from these caches can't
> have extension objects. Introduce SLAB_NO_OBJ_EXT slab flag to mark these
> caches and avoid creating extensions for objects allocated from these
> slabs.
>
> Signed-off-by: Suren Baghdasaryan <surenb@google.com>
> Reviewed-by: Kees Cook <keescook@chromium.org>

Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>