Messages in this thread Patch in this message | | | From | Andrey Ryabinin <> | Subject | [PATCH v10 04/17] mm: slub: introduce virt_to_obj function. | Date | Thu, 29 Jan 2015 18:11:48 +0300 |
| |
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@samsung.com> Acked-by: Christoph Lameter <cl@linux.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
| |