Merge branch 'master' into pm-sleep

* master: (848 commits)
  SELinux: Fix RCU deref check warning in sel_netport_insert()
  binary_sysctl(): fix memory leak
  mm/vmalloc.c: remove static declaration of va from __get_vm_area_node
  ipmi_watchdog: restore settings when BMC reset
  oom: fix integer overflow of points in oom_badness
  memcg: keep root group unchanged if creation fails
  nilfs2: potential integer overflow in nilfs_ioctl_clean_segments()
  nilfs2: unbreak compat ioctl
  cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask
  evm: prevent racing during tfm allocation
  evm: key must be set once during initialization
  mmc: vub300: fix type of firmware_rom_wait_states module parameter
  Revert "mmc: enable runtime PM by default"
  mmc: sdhci: remove "state" argument from sdhci_suspend_host
  x86, dumpstack: Fix code bytes breakage due to missing KERN_CONT
  IB/qib: Correct sense on freectxts increment and decrement
  RDMA/cma: Verify private data length
  cgroups: fix a css_set not found bug in cgroup_attach_proc
  oprofile: Fix uninitialized memory access when writing to writing to oprofilefs
  Revert "xen/pv-on-hvm kexec: add xs_reset_watches to shutdown watches from old kernel"
  ...

Conflicts:
	kernel/cgroup_freezer.c

diff --cc drivers/staging/rts_pstor/rtsx.c
Simple merge

diff --cc fs/btrfs/async-thread.c
Simple merge

diff --cc fs/btrfs/disk-io.c
Simple merge

diff --cc fs/ext4/super.c
Simple merge

diff --cc fs/fs-writeback.c
Simple merge

diff --cc fs/nfs/nfs4proc.c
Simple merge

diff --cc kernel/cgroup_freezer.c
index e411a60cc2c822cbe94dadae9f5ed05c8863f559,213c0351dad8fc8315d6d79a5bf3706a59c823bd..fcb93fca782d482ec57b0163db6b04420d70b639
--- 1/kernel/cgroup_freezer.c
--- 2/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@@ -145,13 -150,16 +145,20 @@@ static struct cgroup_subsys_state *free
  static void freezer_destroy(struct cgroup_subsys *ss,
                            struct cgroup *cgroup)
  {
 -      kfree(cgroup_freezer(cgroup));
 +      struct freezer *freezer = cgroup_freezer(cgroup);
 +
 +      if (freezer->state != CGROUP_THAWED)
 +              atomic_dec(&system_freezing_cnt);
 +      kfree(freezer);
  }
  
+ /* task is frozen or will freeze immediately when next it gets woken */
+ static bool is_task_frozen_enough(struct task_struct *task)
+ {
+       return frozen(task) ||
+               (task_is_stopped_or_traced(task) && freezing(task));
+ }
+ 
  /*
   * The call to cgroup_lock() in the freezer.state write method prevents
   * a write to that file racing against an attach, and hence the
@@@ -224,7 -238,7 +231,7 @@@ static void update_if_frozen(struct cgr
        cgroup_iter_start(cgroup, &it);
        while ((task = cgroup_iter_next(cgroup, &it))) {
                ntotal++;
-               if (freezing(task) && frozen(task))
 -              if (is_task_frozen_enough(task))
++              if (freezing(task) && is_task_frozen_enough(task))
                        nfrozen++;
        }
  
@@@ -272,11 -286,12 +279,11 @@@ static int try_to_freeze_cgroup(struct 
        struct task_struct *task;
        unsigned int num_cant_freeze_now = 0;
  
 -      freezer->state = CGROUP_FREEZING;
        cgroup_iter_start(cgroup, &it);
        while ((task = cgroup_iter_next(cgroup, &it))) {
 -              if (!freeze_task(task, true))
 +              if (!freeze_task(task))
                        continue;
-               if (frozen(task))
+               if (is_task_frozen_enough(task))
                        continue;
                if (!freezing(task) && !freezer_should_skip(task))
                        num_cant_freeze_now++;

diff --cc mm/oom_kill.c
Simple merge

diff --cc net/sunrpc/sched.c
Simple merge