From 6e48a966dfd18987fec9385566a67d36e2b5fc11 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Mon, 4 Oct 2021 14:46:46 +0100 Subject: mm/kasan: Convert to struct folio and struct slab KASAN accesses some slab related struct page fields so we need to convert it to struct slab. Some places are a bit simplified thanks to kasan_addr_to_slab() encapsulating the PageSlab flag check through virt_to_slab(). When resolving object address to either a real slab or a large kmalloc, use struct folio as the intermediate type for testing the slab flag to avoid unnecessary implicit compound_head(). [ vbabka@suse.cz: use struct folio, adjust to differences in previous patches ] Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Vlastimil Babka Reviewed-by: Andrey Konovalov Reviewed-by: Roman Gushchin Tested-by: Hyeongogn Yoo <42.hyeyoo@gmail.com> Cc: Andrey Ryabinin Cc: Alexander Potapenko Cc: Andrey Konovalov Cc: Dmitry Vyukov Cc: --- mm/kasan/quarantine.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mm/kasan/quarantine.c') diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c index d8ccff4c1275..587da8995f2d 100644 --- a/mm/kasan/quarantine.c +++ b/mm/kasan/quarantine.c @@ -117,7 +117,7 @@ static unsigned long quarantine_batch_size; static struct kmem_cache *qlink_to_cache(struct qlist_node *qlink) { - return virt_to_head_page(qlink)->slab_cache; + return virt_to_slab(qlink)->slab_cache; } static void *qlink_to_object(struct qlist_node *qlink, struct kmem_cache *cache) -- cgit v1.2.3