2020-11-10 22:22:42

by Andrey Konovalov

Subject: [PATCH v2 01/20] kasan: simplify quarantine_put call site

Move get_free_info() call into quarantine_put() to simplify the call site.

No functional changes.

Signed-off-by: Andrey Konovalov <[email protected]>
Reviewed-by: Dmitry Vyukov <[email protected]>
Link: https://linux-review.googlesource.com/id/Iab0f04e7ebf8d83247024b7190c67c3c34c7940f
---
mm/kasan/common.c | 2 +-
mm/kasan/kasan.h | 5 ++---
mm/kasan/quarantine.c | 3 ++-
3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index 2bb0ef6da6bd..5712c66c11c1 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -308,7 +308,7 @@ static bool __kasan_slab_free(struct kmem_cache *cache, void *object,

kasan_set_free_info(cache, object, tag);

- quarantine_put(get_free_info(cache, object), cache);
+ quarantine_put(cache, object);

return IS_ENABLED(CONFIG_KASAN_GENERIC);
}
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 21fe75c66f26..c2c40ec1544d 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -214,12 +214,11 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,

#if defined(CONFIG_KASAN_GENERIC) && \
(defined(CONFIG_SLAB) || defined(CONFIG_SLUB))
-void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache);
+void quarantine_put(struct kmem_cache *cache, void *object);
void quarantine_reduce(void);
void quarantine_remove_cache(struct kmem_cache *cache);
#else
-static inline void quarantine_put(struct kasan_free_meta *info,
- struct kmem_cache *cache) { }
+static inline void quarantine_put(struct kmem_cache *cache, void *object) { }
static inline void quarantine_reduce(void) { }
static inline void quarantine_remove_cache(struct kmem_cache *cache) { }
#endif
diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c
index 580ff5610fc1..a0792f0d6d0f 100644
--- a/mm/kasan/quarantine.c
+++ b/mm/kasan/quarantine.c
@@ -161,11 +161,12 @@ static void qlist_free_all(struct qlist_head *q, struct kmem_cache *cache)
qlist_init(q);
}

-void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache)
+void quarantine_put(struct kmem_cache *cache, void *object)
{
unsigned long flags;
struct qlist_head *q;
struct qlist_head temp = QLIST_INIT;
+ struct kasan_free_meta *info = get_free_info(cache, object);

/*
* Note: irq must be disabled until after we move the batch to the
--
2.29.2.222.g5d2a92d10f8-goog

2020-11-11 16:10:21

by Marco Elver

Subject: Re: [PATCH v2 01/20] kasan: simplify quarantine_put call site

On Tue, Nov 10, 2020 at 11:20PM +0100, Andrey Konovalov wrote:
> Move get_free_info() call into quarantine_put() to simplify the call site.
>
> No functional changes.
>
> Signed-off-by: Andrey Konovalov <[email protected]>
> Reviewed-by: Dmitry Vyukov <[email protected]>
> Link: https://linux-review.googlesource.com/id/Iab0f04e7ebf8d83247024b7190c67c3c34c7940f
> ---
> mm/kasan/common.c | 2 +-
> mm/kasan/kasan.h | 5 ++---
> mm/kasan/quarantine.c | 3 ++-
> 3 files changed, 5 insertions(+), 5 deletions(-)

Reviewed-by: Marco Elver <[email protected]>

> diff --git a/mm/kasan/common.c b/mm/kasan/common.c
> index 2bb0ef6da6bd..5712c66c11c1 100644
> --- a/mm/kasan/common.c
> +++ b/mm/kasan/common.c
> @@ -308,7 +308,7 @@ static bool __kasan_slab_free(struct kmem_cache *cache, void *object,
>
> kasan_set_free_info(cache, object, tag);
>
> - quarantine_put(get_free_info(cache, object), cache);
> + quarantine_put(cache, object);
>
> return IS_ENABLED(CONFIG_KASAN_GENERIC);
> }
> diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
> index 21fe75c66f26..c2c40ec1544d 100644
> --- a/mm/kasan/kasan.h
> +++ b/mm/kasan/kasan.h
> @@ -214,12 +214,11 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
>
> #if defined(CONFIG_KASAN_GENERIC) && \
> (defined(CONFIG_SLAB) || defined(CONFIG_SLUB))
> -void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache);
> +void quarantine_put(struct kmem_cache *cache, void *object);
> void quarantine_reduce(void);
> void quarantine_remove_cache(struct kmem_cache *cache);
> #else
> -static inline void quarantine_put(struct kasan_free_meta *info,
> - struct kmem_cache *cache) { }
> +static inline void quarantine_put(struct kmem_cache *cache, void *object) { }
> static inline void quarantine_reduce(void) { }
> static inline void quarantine_remove_cache(struct kmem_cache *cache) { }
> #endif
> diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c
> index 580ff5610fc1..a0792f0d6d0f 100644
> --- a/mm/kasan/quarantine.c
> +++ b/mm/kasan/quarantine.c
> @@ -161,11 +161,12 @@ static void qlist_free_all(struct qlist_head *q, struct kmem_cache *cache)
> qlist_init(q);
> }
>
> -void quarantine_put(struct kasan_free_meta *info, struct kmem_cache *cache)
> +void quarantine_put(struct kmem_cache *cache, void *object)
> {
> unsigned long flags;
> struct qlist_head *q;
> struct qlist_head temp = QLIST_INIT;
> + struct kasan_free_meta *info = get_free_info(cache, object);
>
> /*
> * Note: irq must be disabled until after we move the batch to the
> --
> 2.29.2.222.g5d2a92d10f8-goog
>