The commit is pushed to "branch-rh7-3.10.0-229.7.2-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git after rh7-3.10.0-229.7.2.vz7.6.6 ------> commit c79da004858018af5e66fd380014fea3e5d5271d Author: Andrey Ryabinin <aryabi...@odin.com> Date: Thu Sep 3 19:27:38 2015 +0400
ms/mm: slub: introduce virt_to_obj function https://jira.sw.ru/browse/PSBM-26429 From: Andrey Ryabinin <a.ryabi...@samsung.com> commit 912f5fbf1d3060f25d6994aed0265c55b974b2e9 upstream. virt_to_obj takes kmem_cache address, address of slab page, address x pointing somewhere inside slab object, and returns address of the beginning of object. Signed-off-by: Andrey Ryabinin <a.ryabi...@samsung.com> Acked-by: Christoph Lameter <c...@linux.com> Cc: Dmitry Vyukov <dvyu...@google.com> Cc: Konstantin Serebryany <k...@google.com> Cc: Dmitry Chernenkov <dmit...@google.com> Signed-off-by: Andrey Konovalov <adech...@gmail.com> Cc: Yuri Gribov <tetra2...@gmail.com> Cc: Konstantin Khlebnikov <koc...@gmail.com> Cc: Sasha Levin <sasha.le...@oracle.com> Cc: Christoph Lameter <c...@linux.com> Cc: Joonsoo Kim <iamjoonsoo....@lge.com> Cc: Dave Hansen <dave.han...@intel.com> Cc: Andi Kleen <a...@firstfloor.org> Cc: Ingo Molnar <mi...@elte.hu> Cc: Thomas Gleixner <t...@linutronix.de> Cc: "H. Peter Anvin" <h...@zytor.com> Cc: Pekka Enberg <penb...@kernel.org> Cc: David Rientjes <rient...@google.com> Signed-off-by: Andrew Morton <a...@linux-foundation.org> Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> Signed-off-by: Andrey Ryabinin <aryabi...@odin.com> Signed-off-by: Andrey Ryabinin <aryabi...@odin.com> --- include/linux/slub_def.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index d7d4571..bd48c92 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -123,4 +123,20 @@ static inline void sysfs_slab_remove(struct kmem_cache *s) } #endif + +/** + * virt_to_obj - returns address of the beginning of object. + * @s: object's kmem_cache + * @slab_page: address of slab page + * @x: address within object memory range + * + * Returns address of the beginning of object + */ +static inline void *virt_to_obj(struct kmem_cache *s, + const void *slab_page, + const void *x) +{ + return (void *)x - ((x - slab_page) % s->size); +} + #endif /* _LINUX_SLUB_DEF_H */ _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel