diff mbox series

[mm,v2,17/33] kasan: only define metadata structs for Generic mode

Message ID 93569dbf8c3615ae49e62e7be1607b6fea406ae9.1658189199.git.andreyknvl@google.com (mailing list archive)
State New
Headers show
Series kasan: switch tag-based modes to stack ring from per-object metadata | expand

Commit Message

andrey.konovalov@linux.dev July 19, 2022, 12:09 a.m. UTC 
From: Andrey Konovalov <andreyknvl@google.com>

Hide the definitions of kasan_alloc_meta and kasan_free_meta under
an ifdef CONFIG_KASAN_GENERIC check, as these structures are now only
used when the Generic mode is enabled.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
 mm/kasan/kasan.h | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)
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Patch

diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 6da35370ba37..cae60e4d8842 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -193,14 +193,12 @@  struct kasan_track {
 	depot_stack_handle_t stack;
 };
 
+#ifdef CONFIG_KASAN_GENERIC
+
 struct kasan_alloc_meta {
 	struct kasan_track alloc_track;
-	/* Generic mode stores free track in kasan_free_meta. */
-#ifdef CONFIG_KASAN_GENERIC
+	/* Free track is stored in kasan_free_meta. */
 	depot_stack_handle_t aux_stack[2];
-#else
-	struct kasan_track free_track;
-#endif
 };
 
 struct qlist_node {
@@ -219,12 +217,12 @@  struct qlist_node {
  * After that, slab allocator stores the freelist pointer in the object.
  */
 struct kasan_free_meta {
-#ifdef CONFIG_KASAN_GENERIC
 	struct qlist_node quarantine_link;
 	struct kasan_track free_track;
-#endif
 };
 
+#endif /* CONFIG_KASAN_GENERIC */
+
 #if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST)
 /* Used in KUnit-compatible KASAN tests. */
 struct kunit_kasan_status {