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a52c6330ff
commit 21c690a349 ("mm: introduce slabobj_ext to support slab object
extensions") changed the folio/page->memcg_data define condition from
MEMCG to SLAB_OBJ_EXT. This action make memcg_data exposed while !MEMCG.
As Vlastimil Babka suggested, let's add _unused_slab_obj_exts for
SLAB_MATCH for slab.obj_exts while !MEMCG. That could resolve the match
issue, clean up the feature logical.
Signed-off-by: Alex Shi (Tencent) <alexs@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yoann Congal <yoann.congal@smile.fr>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>