Merge commit 'v3.6-rc1' into linux-next

* commit 'v3.6-rc1': (9532 commits)
  Linux 3.6-rc1
  mm: remove node_start_pfn checking in new WARN_ON for now
  ARM: mmp: add missing irqs.h
  arm: mvebu: fix typo in .dtsi comment for Armada XP SoCs
  ARM: PRIMA2: delete redundant codes to restore LATCHED when timer resumes
  libceph: fix crypto key null deref, memory leak
  ceph: simplify+fix atomic_open
  sh: explicitly include sh_dma.h in setup-sh7722.c
  um: Add arch/x86/um to MAINTAINERS
  um: pass siginfo to guest process
  um: fix ubd_file_size for read-only files
  md/dm-raid: DM_RAID should select MD_RAID10
  md/raid1: submit IO from originating thread instead of md thread.
  raid5: raid5d handle stripe in batch way
  raid5: make_request use batch stripe release
  um: pull interrupt_end() into userspace()
  um: split syscall_trace(), pass pt_regs to it
  um: switch UPT_SET_RETURN_VALUE and regs_return_value to pt_regs
  MIPS: Loongson 2: Sort out clock managment.
  locks: remove unused lm_release_private
  ...

1 files changed, 20 insertions, 19 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index ab5211b9e622..3bd2280d79f6 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -114,6 +114,10 @@ int nr_processes(void)
 	return total;
 }
 
+void __weak arch_release_task_struct(struct task_struct *tsk)
+{
+}
+
 #ifndef CONFIG_ARCH_TASK_STRUCT_ALLOCATOR
 static struct kmem_cache *task_struct_cachep;
 
@@ -122,17 +126,17 @@ static inline struct task_struct *alloc_task_struct_node(int node)
 	return kmem_cache_alloc_node(task_struct_cachep, GFP_KERNEL, node);
 }
 
-void __weak arch_release_task_struct(struct task_struct *tsk) { }
-
 static inline void free_task_struct(struct task_struct *tsk)
 {
-	arch_release_task_struct(tsk);
 	kmem_cache_free(task_struct_cachep, tsk);
 }
 #endif
 
+void __weak arch_release_thread_info(struct thread_info *ti)
+{
+}
+
 #ifndef CONFIG_ARCH_THREAD_INFO_ALLOCATOR
-void __weak arch_release_thread_info(struct thread_info *ti) { }
 
 /*
  * Allocate pages if THREAD_SIZE is >= PAGE_SIZE, otherwise use a
@@ -150,7 +154,6 @@ static struct thread_info *alloc_thread_info_node(struct task_struct *tsk,
 
 static inline void free_thread_info(struct thread_info *ti)
 {
-	arch_release_thread_info(ti);
 	free_pages((unsigned long)ti, THREAD_SIZE_ORDER);
 }
 # else
@@ -164,7 +167,6 @@ static struct thread_info *alloc_thread_info_node(struct task_struct *tsk,
 
 static void free_thread_info(struct thread_info *ti)
 {
-	arch_release_thread_info(ti);
 	kmem_cache_free(thread_info_cache, ti);
 }
 
@@ -205,10 +207,12 @@ static void account_kernel_stack(struct thread_info *ti, int account)
 void free_task(struct task_struct *tsk)
 {
 	account_kernel_stack(tsk->stack, -1);
+	arch_release_thread_info(tsk->stack);
 	free_thread_info(tsk->stack);
 	rt_mutex_debug_task_free(tsk);
 	ftrace_graph_exit_task(tsk);
 	put_seccomp_filter(tsk);
+	arch_release_task_struct(tsk);
 	free_task_struct(tsk);
 }
 EXPORT_SYMBOL(free_task);
@@ -298,14 +302,12 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 		return NULL;
 
 	ti = alloc_thread_info_node(tsk, node);
-	if (!ti) {
-		free_task_struct(tsk);
-		return NULL;
-	}
+	if (!ti)
+		goto free_tsk;
 
 	err = arch_dup_task_struct(tsk, orig);
 	if (err)
-		goto out;
+		goto free_ti;
 
 	tsk->stack = ti;
 
@@ -333,8 +335,9 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 
 	return tsk;
 
-out:
+free_ti:
 	free_thread_info(ti);
+free_tsk:
 	free_task_struct(tsk);
 	return NULL;
 }
@@ -378,16 +381,14 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
 		struct file *file;
 
 		if (mpnt->vm_flags & VM_DONTCOPY) {
-			long pages = vma_pages(mpnt);
-			mm->total_vm -= pages;
 			vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
-								-pages);
+							-vma_pages(mpnt));
 			continue;
 		}
 		charge = 0;
 		if (mpnt->vm_flags & VM_ACCOUNT) {
-			unsigned long len;
-			len = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT;
+			unsigned long len = vma_pages(mpnt);
+
 			if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
 				goto fail_nomem;
 			charge = len;
@@ -1305,7 +1306,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 #ifdef CONFIG_DEBUG_MUTEXES
 	p->blocked_on = NULL; /* not blocked yet */
 #endif
-#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+#ifdef CONFIG_MEMCG
 	p->memcg_batch.do_batch = 0;
 	p->memcg_batch.memcg = NULL;
 #endif
@@ -1415,7 +1416,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	 */
 	p->group_leader = p;
 	INIT_LIST_HEAD(&p->thread_group);
-	INIT_HLIST_HEAD(&p->task_works);
+	p->task_works = NULL;
 
 	/* Now that the task is set up, run cgroup callbacks if
 	 * necessary. We need to run them before the task is visible