linux-kernel - [PATCH mm v4 03/19] kasan: introduce set_alloc

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Message-Id: <b2393e8f1e311a70fc3aaa2196461b6acdee7d21.1606162397.git.andreyknvl@google.com>
Date:   Mon, 23 Nov 2020 21:14:33 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Kevin Brodsky <kevin.brodsky@....com>,
        kasan-dev@...glegroups.com, linux-arm-kernel@...ts.infradead.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: [PATCH mm v4 03/19] kasan: introduce set_alloc_info

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@...gle.com>
Reviewed-by: Dmitry Vyukov <dvyukov@...gle.com>
Reviewed-by: Marco Elver <elver@...gle.com>
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);
 }
-- 
2.29.2.454.gaff20da3a2-goog