Commit 82c1775d authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Vlastimil Babka
Browse files

mm: Convert virt_to_cache() to use struct slab 



This function is entirely self-contained, so can be converted from page
to slab.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
Acked-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Reviewed-by: default avatarRoman Gushchin <guro@fb.com>
Reviewed-by: default avatarHyeonggon Yoo <42.hyeyoo@gmail.com>
parent b918653b

mm/slab.h

+4 −4
Original line number Diff line number Diff line
@@ -574,13 +574,13 @@ static inline void memcg_slab_free_hook(struct kmem_cache *s, 


static inline struct kmem_cache *virt_to_cache(const void *obj)

{

	struct page *page;

	struct slab *slab;



	page = virt_to_head_page(obj);

	if (WARN_ONCE(!PageSlab(page), "%s: Object is not a Slab page!\n",

	slab = virt_to_slab(obj);

	if (WARN_ONCE(!slab, "%s: Object is not a Slab page!\n",

					__func__))

		return NULL;

	return page->slab_cache;

	return slab->slab_cache;

}



static __always_inline void account_slab(struct slab *slab, int order,