[PATCH mm v3 03/19] kasan: introduce set_alloc_info

From: Andrey Konovalov
Date: Fri Nov 13 2020 - 17:22:27 EST


Add set_alloc_info() helper and move kasan_set_track() into it. This will
simplify the code for one of the upcoming changes.

No functional changes.

Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reviewed-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Link: https://linux-review.googlesource.com/id/I0316193cbb4ecc9b87b7c2eee0dd79f8ec908c1a
---
mm/kasan/common.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 8197399b0a1f..0a420f1dbc54 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -327,6 +327,11 @@ bool kasan_slab_free(struct kmem_cache *cache, void *object, unsigned long ip)
return __kasan_slab_free(cache, object, ip, true);
}

+static void set_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags)
+{
+ kasan_set_track(&kasan_get_alloc_meta(cache, object)->alloc_track, flags);
+}
+
static void *__kasan_kmalloc(struct kmem_cache *cache, const void *object,
size_t size, gfp_t flags, bool keep_tag)
{
@@ -357,7 +362,7 @@ static void *__kasan_kmalloc(struct kmem_cache *cache, const void *object,
KASAN_KMALLOC_REDZONE);

if (cache->flags & SLAB_KASAN)
- kasan_set_track(&kasan_get_alloc_meta(cache, object)->alloc_track, flags);
+ set_alloc_info(cache, (void *)object, flags);

return set_tag(object, tag);
}
--
2.29.2.299.gdc1121823c-goog