From: Hyeonggon Yoo <42.hyeyoo@gmail.com>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: linux-mm@kvack.org, Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Marco Elver <elver@google.com>,
Matthew WilCox <willy@infradead.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 3/5] mm/sl[auo]b: move definition of __ksize() to mm/slab.h
Date: Sat, 5 Mar 2022 04:03:11 +0000 [thread overview]
Message-ID: <YiLg/0be3jp9mg2V@ip-172-31-19-208.ap-northeast-1.compute.internal> (raw)
In-Reply-To: <a7a7fb5a-6c3b-d85f-e4aa-6027a941760d@suse.cz>
On Fri, Mar 04, 2022 at 07:29:21PM +0100, Vlastimil Babka wrote:
> On 3/4/22 07:34, Hyeonggon Yoo wrote:
> > __ksize() is only called by KASAN. Remove export symbol and move
> > definition to mm/slab.h as we don't want to grow its callers.
> >
> > [ willy@infradead.org: Move definition to mm/slab.h and reduce comments ]
> >
> > Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
>
> Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
>
Thanks!
> > --- a/mm/slab.h
> > +++ b/mm/slab.h
> > @@ -685,6 +685,8 @@ static inline void free_large_kmalloc(struct folio *folio, void *object)
> > }
> > #endif /* CONFIG_SLOB */
> >
> > +size_t __ksize(const void *objp);
> > +
> > static inline size_t slab_ksize(const struct kmem_cache *s)
> > {
> > #ifndef CONFIG_SLUB
> > diff --git a/mm/slab_common.c b/mm/slab_common.c
> > index 1d2f92e871d2..b126fc7247b9 100644
> > --- a/mm/slab_common.c
> > +++ b/mm/slab_common.c
> > @@ -1247,13 +1247,7 @@ EXPORT_SYMBOL(kfree_sensitive);
> >
> > #ifndef CONFIG_SLOB
> > /**
>
> Maybe just /* so it's not even parsed as a kernel-doc anymore?
>
Oh yes, that would be better.
> > - * __ksize -- Uninstrumented ksize.
> > - * @objp: pointer to the object
> > - *
> > - * Unlike ksize(), __ksize() is uninstrumented, and does not provide the same
> > - * safety checks as ksize() with KASAN instrumentation enabled.
> > - *
> > - * Return: size of the actual memory used by @objp in bytes
> > + * __ksize -- Uninstrumented ksize. Only called by KASAN.
> > */
> > size_t __ksize(const void *object)
> > {
> > @@ -1269,7 +1263,6 @@ size_t __ksize(const void *object)
> >
> > return slab_ksize(folio_slab(folio)->slab_cache);
> > }
> > -EXPORT_SYMBOL(__ksize);
> > #endif
> >
--
Thank you, You are awesome!
Hyeonggon :-)
next prev parent reply other threads:[~2022-03-05 4:03 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 6:34 [PATCH v2 0/5] slab cleanups Hyeonggon Yoo
2022-03-04 6:34 ` [PATCH v2 1/5] mm/slab: kmalloc: pass requests larger than order-1 page to page allocator Hyeonggon Yoo
2022-03-04 12:45 ` Vlastimil Babka
2022-03-05 5:10 ` Hyeonggon Yoo
2022-03-04 6:34 ` [PATCH v2 2/5] mm/sl[au]b: unify __ksize() Hyeonggon Yoo
2022-03-04 18:25 ` Vlastimil Babka
2022-03-05 4:02 ` Hyeonggon Yoo
2022-03-04 6:34 ` [PATCH v2 3/5] mm/sl[auo]b: move definition of __ksize() to mm/slab.h Hyeonggon Yoo
2022-03-04 18:29 ` Vlastimil Babka
2022-03-05 4:03 ` Hyeonggon Yoo [this message]
2022-03-04 6:34 ` [PATCH v2 4/5] mm/slub: limit number of node partial slabs only in cache creation Hyeonggon Yoo
2022-03-04 18:33 ` Vlastimil Babka
2022-03-04 6:34 ` [PATCH v2 5/5] mm/slub: refactor deactivate_slab() Hyeonggon Yoo
2022-03-04 19:01 ` Vlastimil Babka
2022-03-05 4:21 ` Hyeonggon Yoo
2022-03-04 11:50 ` [PATCH v2 0/5] slab cleanups Marco Elver
2022-03-04 12:02 ` Hyeonggon Yoo
2022-03-04 13:11 ` Marco Elver
2022-03-04 16:42 ` Vlastimil Babka
2022-03-04 16:45 ` Marco Elver
2022-03-05 4:00 ` Hyeonggon Yoo
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