[GIT PULL pm/for-next] pm: freezer update

[Tejun Heo]

Hello, Rafael.

This is pull request for the following pending patches[ets].  Let's
see if it sticks this time. :)

 [1] freezer: fix various bugs and simplify implementation, take#2
 [2] usb_storage: don't use set_freezable_with_signal()
 [3] dmatest: don't use set_freezable_with_signal()
 [4] freezer: kill unused set_freezable_with_signal()
 [5] freezer: fix wait_event_freezable/__thaw_task races

The patches are available in the git repository at:

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git pm-freezer

Oleg Nesterov (1):
      freezer: fix wait_event_freezable/__thaw_task races

Tejun Heo (23):
      freezer: fix current->state restoration race in refrigerator()
      freezer: don't unnecessarily set PF_NOFREEZE explicitly
      freezer: unexport refrigerator() and update try_to_freeze() slightly
      freezer: implement and use kthread_freezable_should_stop()
      freezer: rename thaw_process() to __thaw_task() and simplify the implementation
      freezer: remove racy clear_freeze_flag() and set PF_NOFREEZE on dead tasks
      freezer: don't distinguish nosig tasks on thaw
      freezer: use dedicated lock instead of task_lock() + memory barrier
      freezer: make freezing indicate freeze condition in effect
      freezer: test freezable conditions while holding freezer_lock
      freezer: kill PF_FREEZING
      freezer: clean up freeze_processes() failure path
      cgroup_freezer: prepare for removal of TIF_FREEZE
      freezer: make freezing() test freeze conditions in effect instead of TIF_FREEZE
      freezer: remove now unused TIF_FREEZE
      freezer: remove should_send_signal() and update frozen()
      freezer: fix set_freezable[_with_signal]() race
      freezer: restructure __refrigerator()
      freezer: use lock_task_sighand() in fake_signal_wake_up()
      freezer: remove unused @sig_only from freeze_task()
      usb_storage: don't use set_freezable_with_signal()
      dmatest: don't use set_freezable_with_signal()
      freezer: kill unused set_freezable_with_signal()

 Documentation/power/freezing-of-tasks.txt |   14 +-
 arch/alpha/include/asm/thread_info.h      |    2 -
 arch/arm/include/asm/thread_info.h        |    2 -
 arch/avr32/include/asm/thread_info.h      |    2 -
 arch/blackfin/include/asm/thread_info.h   |    2 -
 arch/cris/include/asm/thread_info.h       |    2 -
 arch/frv/include/asm/thread_info.h        |    2 -
 arch/h8300/include/asm/thread_info.h      |    2 -
 arch/ia64/include/asm/thread_info.h       |    2 -
 arch/m32r/include/asm/thread_info.h       |    2 -
 arch/m68k/include/asm/thread_info.h       |    1 -
 arch/microblaze/include/asm/thread_info.h |    2 -
 arch/mips/include/asm/thread_info.h       |    2 -
 arch/mn10300/include/asm/thread_info.h    |    2 -
 arch/parisc/include/asm/thread_info.h     |    2 -
 arch/powerpc/include/asm/thread_info.h    |    2 -
 arch/s390/include/asm/thread_info.h       |    2 -
 arch/sh/include/asm/thread_info.h         |    2 -
 arch/sparc/include/asm/thread_info_32.h   |    2 -
 arch/sparc/include/asm/thread_info_64.h   |    2 -
 arch/um/include/asm/thread_info.h         |    2 -
 arch/unicore32/include/asm/thread_info.h  |    2 -
 arch/x86/include/asm/thread_info.h        |    2 -
 arch/xtensa/include/asm/thread_info.h     |    2 -
 drivers/bluetooth/btmrvl_main.c           |    2 -
 drivers/dma/dmatest.c                     |   46 ++++---
 drivers/mfd/twl6030-irq.c                 |    2 -
 drivers/net/irda/stir4200.c               |    2 +-
 drivers/platform/x86/thinkpad_acpi.c      |   15 +--
 drivers/staging/rts_pstor/rtsx.c          |    2 -
 drivers/usb/storage/usb.c                 |   13 +-
 fs/btrfs/async-thread.c                   |    2 +-
 fs/btrfs/disk-io.c                        |    8 +-
 fs/ext4/super.c                           |    3 +-
 fs/fs-writeback.c                         |    4 +-
 fs/gfs2/log.c                             |    4 +-
 fs/gfs2/quota.c                           |    4 +-
 fs/jbd/journal.c                          |    2 +-
 fs/jbd2/journal.c                         |    2 +-
 fs/jfs/jfs_logmgr.c                       |    2 +-
 fs/jfs/jfs_txnmgr.c                       |    4 +-
 fs/nilfs2/segment.c                       |    2 +-
 fs/xfs/xfs_buf.c                          |    2 +-
 include/linux/freezer.h                   |  108 ++++++----------
 include/linux/kthread.h                   |    1 +
 include/linux/sched.h                     |    4 +-
 kernel/cgroup_freezer.c                   |   63 ++++-----
 kernel/exit.c                             |    3 +-
 kernel/fork.c                             |    1 -
 kernel/freezer.c                          |  203 +++++++++++++++--------------
 kernel/kthread.c                          |   27 ++++-
 kernel/power/hibernate.c                  |   15 +--
 kernel/power/process.c                    |   77 +++++-------
 kernel/power/suspend.c                    |    8 +-
 kernel/power/user.c                       |    4 +-
 mm/backing-dev.c                          |    8 +-
 mm/oom_kill.c                             |    2 +-
 57 files changed, 303 insertions(+), 401 deletions(-)

Thanks.

--
tejun

[1] http://thread.gmane.org/gmane.linux.kernel/1209247
[2] http://thread.gmane.org/gmane.linux.kernel/1209416
[3] https://lkml.org/lkml/2011/11/21/352
[4] http://thread.gmane.org/gmane.linux.kernel/1209416/focus=1209417
[5] http://thread.gmane.org/gmane.linux.kernel/1209444
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