The function sets some fields that are being moved from struct page to struct
slab so it needs to be converted.
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: <kasan-dev@xxxxxxxxxxxxxxxx>
---
mm/kfence/core.c | 12 ++++++------
mm/kfence/kfence_test.c | 6 +++---
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/mm/kfence/core.c b/mm/kfence/core.c
index 09945784df9e..4eb60cf5ff8b 100644
--- a/mm/kfence/core.c
+++ b/mm/kfence/core.c
@@ -360,7 +360,7 @@ static void *kfence_guarded_alloc(struct kmem_cache *cache, size_t size, gfp_t g
{
struct kfence_metadata *meta = NULL;
unsigned long flags;
- struct page *page;
+ struct slab *slab;
void *addr;
/* Try to obtain a free object. */
@@ -424,13 +424,13 @@ static void *kfence_guarded_alloc(struct kmem_cache *cache, size_t size, gfp_t g
alloc_covered_add(alloc_stack_hash, 1);
- /* Set required struct page fields. */
- page = virt_to_page(meta->addr);
- page->slab_cache = cache;
+ /* Set required slab fields. */
+ slab = virt_to_slab((void *)meta->addr);
+ slab->slab_cache = cache;
if (IS_ENABLED(CONFIG_SLUB))
- page->objects = 1;
+ slab->objects = 1;
if (IS_ENABLED(CONFIG_SLAB))
- page->s_mem = addr;
+ slab->s_mem = addr;
/* Memory initialization. */
for_each_canary(meta, set_canary_byte);
diff --git a/mm/kfence/kfence_test.c b/mm/kfence/kfence_test.c
index f7276711d7b9..a22b1af85577 100644
--- a/mm/kfence/kfence_test.c
+++ b/mm/kfence/kfence_test.c
@@ -282,7 +282,7 @@ static void *test_alloc(struct kunit *test, size_t size, gfp_t gfp, enum allocat
alloc = kmalloc(size, gfp);
if (is_kfence_address(alloc)) {
- struct page *page = virt_to_head_page(alloc);
+ struct slab *slab = virt_to_slab(alloc);
struct kmem_cache *s = test_cache ?:
kmalloc_caches[kmalloc_type(GFP_KERNEL)][__kmalloc_index(size, false)];
@@ -291,8 +291,8 @@ static void *test_alloc(struct kunit *test, size_t size, gfp_t gfp, enum allocat
* even for KFENCE objects; these are required so that
* memcg accounting works correctly.
*/
- KUNIT_EXPECT_EQ(test, obj_to_index(s, page_slab(page), alloc), 0U);
- KUNIT_EXPECT_EQ(test, objs_per_slab(s, page_slab(page)), 1);
+ KUNIT_EXPECT_EQ(test, obj_to_index(s, slab, alloc), 0U);
+ KUNIT_EXPECT_EQ(test, objs_per_slab(s, slab), 1);
if (policy == ALLOCATE_ANY)
return alloc;
--
2.33.1
