Merge branch 'akpm' (patches from Andrew Morton)

Merge random fixes from Andrew Morton:
 "Random fixes.

  I have one batch remaining for -rc1, mainly zram changes which await a
  merge of Jens's trees"

* emailed patches fron Andrew Morton akpm@linux-foundation.org>:
  MAINTAINERS: ADI Linux development mailing lists: change to the new server
  Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/
  dma-debug: fix overlap detection
  memblock: add limit checking to memblock_virt_alloc
  mm/readahead.c: fix do_readahead() for no readpage(s)
  mm/slub.c: do not VM_BUG_ON_PAGE() for temporary on-stack pages
  slab: fix wrong retval on kmem_cache_create_memcg error path
  s390/compat: change parameter types from unsigned long to compat_ulong_t
  fs/compat: fix lookup_dcookie() parameter handling
  fs/compat: fix parameter handling for compat readv/writev syscalls
  mm/mempolicy.c: convert to pr_foo()
  mm: numa: initialise numa balancing after jump label initialisation
  mm/page-writeback.c: do not count anon pages as dirtyable memory
  mm/page-writeback.c: fix dirty_balance_reserve subtraction from dirtyable memory
  mm: document improved handling of swappiness==0
  lib/genalloc.c: add check gen_pool_dma_alloc() if dma pointer is not NULL

1 files changed, 11 insertions, 8 deletions

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 8e40321da09..1ec3c619ba0 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -233,14 +233,17 @@ out_unlock:
 	mutex_unlock(&slab_mutex);
 	put_online_cpus();
 
-	/*
-	 * There is no point in flooding logs with warnings or especially
-	 * crashing the system if we fail to create a cache for a memcg. In
-	 * this case we will be accounting the memcg allocation to the root
-	 * cgroup until we succeed to create its own cache, but it isn't that
-	 * critical.
-	 */
-	if (err && !memcg) {
+	if (err) {
+		/*
+		 * There is no point in flooding logs with warnings or
+		 * especially crashing the system if we fail to create a cache
+		 * for a memcg. In this case we will be accounting the memcg
+		 * allocation to the root cgroup until we succeed to create its
+		 * own cache, but it isn't that critical.
+		 */
+		if (!memcg)
+			return NULL;
+
 		if (flags & SLAB_PANIC)
 			panic("kmem_cache_create: Failed to create slab '%s'. Error %d\n",
 				name, err);