Re: [PATCH v4 09/36] mm/slab: introduce SLAB_NO_OBJ_EXT to avoid obj_ext creation
From: Pasha Tatashin <pasha.tatashin@soleen.com>
Date: 2024-02-22 00:10:35
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On Wed, Feb 21, 2024 at 2:41 PM Suren Baghdasaryan [off-list ref] 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 <redacted>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>