Merge branch 'akpm' (patches from Andrew)

Merge second set of updates from Andrew Morton:
 "More of MM"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (83 commits)
  mm/nommu.c: fix arithmetic overflow in __vm_enough_memory()
  mm/mmap.c: fix arithmetic overflow in __vm_enough_memory()
  vmstat: Reduce time interval to stat update on idle cpu
  mm/page_owner.c: remove unnecessary stack_trace field
  Documentation/filesystems/proc.txt: describe /proc/<pid>/map_files
  mm: incorporate read-only pages into transparent huge pages
  vmstat: do not use deferrable delayed work for vmstat_update
  mm: more aggressive page stealing for UNMOVABLE allocations
  mm: always steal split buddies in fallback allocations
  mm: when stealing freepages, also take pages created by splitting buddy page
  mincore: apply page table walker on do_mincore()
  mm: /proc/pid/clear_refs: avoid split_huge_page()
  mm: pagewalk: fix misbehavior of walk_page_range for vma(VM_PFNMAP)
  mempolicy: apply page table walker on queue_pages_range()
  arch/powerpc/mm/subpage-prot.c: use walk->vma and walk_page_vma()
  memcg: cleanup preparation for page table walk
  numa_maps: remove numa_maps->vma
  numa_maps: fix typo in gather_hugetbl_stats
  pagemap: use walk->vma instead of calling find_vma()
  clear_refs: remove clear_refs_private->vma and introduce clear_refs_test_walk()
  ...

1 files changed, 12 insertions, 11 deletions

diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 42bad18c66c9..259a4d5a4e8f 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -90,7 +90,7 @@ static void sysrq_handle_loglevel(int key)
 
 	i = key - '0';
 	console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
-	printk("Loglevel set to %d\n", i);
+	pr_info("Loglevel set to %d\n", i);
 	console_loglevel = i;
 }
 static struct sysrq_key_op sysrq_loglevel_op = {
@@ -220,7 +220,7 @@ static void showacpu(void *dummy)
 		return;
 
 	spin_lock_irqsave(&show_lock, flags);
-	printk(KERN_INFO "CPU%d:\n", smp_processor_id());
+	pr_info("CPU%d:\n", smp_processor_id());
 	show_stack(NULL, NULL);
 	spin_unlock_irqrestore(&show_lock, flags);
 }
@@ -243,7 +243,7 @@ static void sysrq_handle_showallcpus(int key)
 		struct pt_regs *regs = get_irq_regs();
 
 		if (regs) {
-			printk(KERN_INFO "CPU%d:\n", smp_processor_id());
+			pr_info("CPU%d:\n", smp_processor_id());
 			show_regs(regs);
 		}
 		schedule_work(&sysrq_showallcpus);
@@ -355,8 +355,9 @@ static struct sysrq_key_op sysrq_term_op = {
 
 static void moom_callback(struct work_struct *ignored)
 {
-	out_of_memory(node_zonelist(first_memory_node, GFP_KERNEL), GFP_KERNEL,
-		      0, NULL, true);
+	if (!out_of_memory(node_zonelist(first_memory_node, GFP_KERNEL),
+			   GFP_KERNEL, 0, NULL, true))
+		pr_info("OOM request ignored because killer is disabled\n");
 }
 
 static DECLARE_WORK(moom_work, moom_callback);
@@ -522,7 +523,7 @@ void __handle_sysrq(int key, bool check_mask)
 	 */
 	orig_log_level = console_loglevel;
 	console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
-	printk(KERN_INFO "SysRq : ");
+	pr_info("SysRq : ");
 
         op_p = __sysrq_get_key_op(key);
         if (op_p) {
@@ -531,14 +532,14 @@ void __handle_sysrq(int key, bool check_mask)
 		 * should not) and is the invoked operation enabled?
 		 */
 		if (!check_mask || sysrq_on_mask(op_p->enable_mask)) {
-			printk("%s\n", op_p->action_msg);
+			pr_cont("%s\n", op_p->action_msg);
 			console_loglevel = orig_log_level;
 			op_p->handler(key);
 		} else {
-			printk("This sysrq operation is disabled.\n");
+			pr_cont("This sysrq operation is disabled.\n");
 		}
 	} else {
-		printk("HELP : ");
+		pr_cont("HELP : ");
 		/* Only print the help msg once per handler */
 		for (i = 0; i < ARRAY_SIZE(sysrq_key_table); i++) {
 			if (sysrq_key_table[i]) {
@@ -549,10 +550,10 @@ void __handle_sysrq(int key, bool check_mask)
 					;
 				if (j != i)
 					continue;
-				printk("%s ", sysrq_key_table[i]->help_msg);
+				pr_cont("%s ", sysrq_key_table[i]->help_msg);
 			}
 		}
-		printk("\n");
+		pr_cont("\n");
 		console_loglevel = orig_log_level;
 	}
 	rcu_read_unlock();