Merge commit 'v2.6.31-rc9' into rebase/master

* commit 'v2.6.31-rc9': (88 commits)
  Linux 2.6.31-rc9
  powerpc: Fix i8259 interrupt driver kernel crash on ML510
  ext2: fix unbalanced kmap()/kunmap()
  pty: don't limit the writes to 'pty_space()' inside 'pty_write()'
  n_tty: do O_ONLCR translation as a single write
  exec: do not sleep in TASK_TRACED under ->cred_guard_mutex
  page-allocator: always change pageblock ownership when anti-fragmentation is disabled
  nommu: fix error handling in do_mmap_pgoff()
  workqueues: introduce __cancel_delayed_work()
  firewire: sbp2: fix freeing of unallocated memory
  firewire: ohci: fix Ricoh R5C832, video reception
  firewire: ohci: fix Agere FW643 and multiple cameras
  firewire: core: fix crash in iso resource management
  ocfs2: ocfs2_write_begin_nolock() should handle len=0
  dm snapshot: fix on disk chunk size validation
  dm exception store: split set_chunk_size
  dm snapshot: fix header corruption race on invalidation
  dm snapshot: refactor zero_disk_area to use chunk_io
  dm log: userspace add luid to distinguish between concurrent log instances
  dm raid1: do not allow log_failure variable to unset after being set
  ...

diff --cc mm/page_alloc.c
Simple merge