SL*B: drop kmem cache argument from constructor

Kmem cache passed to constructor is only needed for constructors that are
themselves multiplexeres.  Nobody uses this "feature", nor does anybody uses
passed kmem cache in non-trivial way, so pass only pointer to object.

Non-trivial places are:
	arch/powerpc/mm/init_64.c
	arch/powerpc/mm/hugetlbpage.c

This is flag day, yes.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Jon Tollefson <kniht@linux.vnet.ibm.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Matt Mackall <mpm@selenic.com>
[akpm@linux-foundation.org: fix arch/powerpc/mm/hugetlbpage.c]
[akpm@linux-foundation.org: fix mm/slab.c]
[akpm@linux-foundation.org: fix ubifs]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 6 deletions

diff --git a/mm/slab.c b/mm/slab.c
index 052e7d64537e..918f04f7fef1 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -406,7 +406,7 @@ struct kmem_cache {
         unsigned int dflags;            /* dynamic flags */
 
         /* constructor func */
-        void (*ctor)(struct kmem_cache *, void *);
+        void (*ctor)(void *obj);
 
 /* 5) cache creation/removal */
         const char *name;
@@ -2137,8 +2137,7 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep)
  */
 struct kmem_cache *
 kmem_cache_create (const char *name, size_t size, size_t align,
-        unsigned long flags,
-        void (*ctor)(struct kmem_cache *, void *))
+        unsigned long flags, void (*ctor)(void *))
 {
         size_t left_over, slab_size, ralign;
         struct kmem_cache *cachep = NULL, *pc;
@@ -2653,7 +2652,7 @@ static void cache_init_objs(struct kmem_cache *cachep,
                  * They must also be threaded.
                  */
                 if (cachep->ctor && !(cachep->flags & SLAB_POISON))
-                        cachep->ctor(cachep, objp + obj_offset(cachep));
+                        cachep->ctor(objp + obj_offset(cachep));
 
                 if (cachep->flags & SLAB_RED_ZONE) {
                         if (*dbg_redzone2(cachep, objp) != RED_INACTIVE)
@@ -2669,7 +2668,7 @@ static void cache_init_objs(struct kmem_cache *cachep,
                                          cachep->buffer_size / PAGE_SIZE, 0);
 #else
                 if (cachep->ctor)
-                        cachep->ctor(cachep, objp);
+                        cachep->ctor(objp);
 #endif
                 slab_bufctl(slabp)[i] = i + 1;
         }
@@ -3093,7 +3092,7 @@ static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
 #endif
         objp += obj_offset(cachep);
         if (cachep->ctor && cachep->flags & SLAB_POISON)
-                cachep->ctor(cachep, objp);
+                cachep->ctor(objp);
 #if ARCH_SLAB_MINALIGN
         if ((u32)objp & (ARCH_SLAB_MINALIGN-1)) {
                 printk(KERN_ERR "0x%p: not aligned to ARCH_SLAB_MINALIGN=%d\n",