From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
This function is entirely self-contained, so can be converted from page
to slab.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Roman Gushchin <guro@xxxxxx>
---
mm/slab.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/slab.h b/mm/slab.h
index dd3f72fddff6..1408ada9ff72 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -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,
--
2.34.1
