mm: Remove slab destructors from kmem_cache_create().

Slab destructors were no longer supported after Christoph's
c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 2f44e61..6cbce96 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -123,7 +123,7 @@
 	peer_cachep = kmem_cache_create("inet_peer_cache",
 			sizeof(struct inet_peer),
 			0, SLAB_HWCACHE_ALIGN|SLAB_PANIC,
-			NULL, NULL);
+			NULL);
 
 	/* All the timers, started at system startup tend
 	   to synchronize. Perturb it a bit.