Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:

 - a few misc things

 - ocfs2 updates

 - the v9fs maintainers have been missing for a long time. I've taken
   over v9fs patch slinging.

 - most of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (116 commits)
  mm,oom_reaper: check for MMF_OOM_SKIP before complaining
  mm/ksm: fix interaction with THP
  mm/memblock.c: cast constant ULLONG_MAX to phys_addr_t
  headers: untangle kmemleak.h from mm.h
  include/linux/mmdebug.h: make VM_WARN* non-rvals
  mm/page_isolation.c: make start_isolate_page_range() fail if already isolated
  mm: change return type to vm_fault_t
  mm, oom: remove 3% bonus for CAP_SYS_ADMIN processes
  mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory
  kernel/fork.c: detect early free of a live mm
  mm: make counting of list_lru_one::nr_items lockless
  mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static
  block_invalidatepage(): only release page if the full page was invalidated
  mm: kernel-doc: add missing parameter descriptions
  mm/swap.c: remove @cold parameter description for release_pages()
  mm/nommu: remove description of alloc_vm_area
  zram: drop max_zpage_size and use zs_huge_class_size()
  zsmalloc: introduce zs_huge_class_size()
  mm: fix races between swapoff and flush dcache
  fs/direct-io.c: minor cleanups in do_blockdev_direct_IO
  ...

diff --cc Documentation/admin-guide/kernel-parameters.txt
Simple merge

diff --cc drivers/block/zram/zram_drv.c
Simple merge

diff --cc drivers/block/zram/zram_drv.h
index 1e9bf65,d71c800..0088612
--- 1/drivers/block/zram/zram_drv.h
--- 2/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@@ -21,22 -21,7 +21,6 @@@
  
  #include "zcomp.h"
  
- /*-- Configurable parameters */
- 
- /*
-  * Pages that compress to size greater than this are stored
-  * uncompressed in memory.
-  */
- static const size_t max_zpage_size = PAGE_SIZE / 4 * 3;
- 
- /*
-  * NOTE: max_zpage_size must be less than or equal to:
-  *   ZS_MAX_ALLOC_SIZE. Otherwise, zs_malloc() would
-  * always return failure.
-  */
- 
- /*-- End of configurable params */
- 
 -#define SECTOR_SHIFT          9
  #define SECTORS_PER_PAGE_SHIFT        (PAGE_SHIFT - SECTOR_SHIFT)
  #define SECTORS_PER_PAGE      (1 << SECTORS_PER_PAGE_SHIFT)
  #define ZRAM_LOGICAL_BLOCK_SHIFT 12

diff --cc fs/direct-io.c
Simple merge

diff --cc fs/ocfs2/dlmglue.c
Simple merge

diff --cc mm/backing-dev.c
Simple merge