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Date: Thu, 29 Jan 2015 18:11:48 +0300 From: Andrey Ryabinin <a.ryabinin@...sung.com> To: linux-kernel@...r.kernel.org Cc: Andrey Ryabinin <a.ryabinin@...sung.com>, Dmitry Vyukov <dvyukov@...gle.com>, Konstantin Serebryany <kcc@...gle.com>, Dmitry Chernenkov <dmitryc@...gle.com>, Andrey Konovalov <adech.fo@...il.com>, Yuri Gribov <tetra2005@...il.com>, Konstantin Khlebnikov <koct9i@...il.com>, Sasha Levin <sasha.levin@...cle.com>, Christoph Lameter <cl@...ux.com>, Joonsoo Kim <iamjoonsoo.kim@....com>, Andrew Morton <akpm@...ux-foundation.org>, Dave Hansen <dave.hansen@...el.com>, Andi Kleen <andi@...stfloor.org>, x86@...nel.org, linux-mm@...ck.org, Pekka Enberg <penberg@...nel.org>, David Rientjes <rientjes@...gle.com> Subject: [PATCH v10 04/17] mm: slub: introduce virt_to_obj function. virt_to_obj takes kmem_cache address, address of slab page, address x pointing somewhere inside slab object, and returns address of the begging of object. Signed-off-by: Andrey Ryabinin <a.ryabinin@...sung.com> Acked-by: Christoph Lameter <cl@...ux.com> --- include/linux/slub_def.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 9abf04e..eca3883 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -110,4 +110,9 @@ static inline void sysfs_slab_remove(struct kmem_cache *s) } #endif +static inline void *virt_to_obj(struct kmem_cache *s, void *slab_page, void *x) +{ + return x - ((x - slab_page) % s->size); +} + #endif /* _LINUX_SLUB_DEF_H */ -- 2.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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