[GIT PULL] writeback fixes and cleanups

[Jens Axboe <jens.axboe@oracle.com>]

Hi,

This should conclude the major updates to the previous writeback
inclusion, and has a bunch of must have fixes from Nick as well. So I
think we should include this sooner rather than later, should also fix
Ingo's bug report.

  git://git.kernel.dk/linux-2.6-block.git writeback

Christoph Hellwig (1):
      writeback: merely wakeup flusher thread if work allocation fails for WB_SYNC_NONE

Jens Axboe (11):
      fs: remove bdev->bd_inode_backing_dev_info
      writeback: get rid of wbc->for_writepages
      writeback: make wb_writeback() take an argument structure
      Assign bdi in super_block
      writeback: only use bdi_writeback_all() for WB_SYNC_NONE writeout
      writeback: use RCU to protect bdi_list
      writeback: inline allocation failure handling in bdi_alloc_queue_work()
      writeback: separate starting of sync vs opportunistic writeback
      writeback: splice dirty inode entries to default bdi on bdi_destroy()
      writeback: add comments to bdi_work structure
      writeback: use schedule_timeout_interruptible()

Nick Piggin (4):
      writeback: remove smp_mb(), it's not needed with list_add_tail_rcu()
      writeback: improve scalability of bdi writeback work queues
      writeback: Fix bdi use after free in wb_work_complete()
      writeback: fix possible bdi writeback refcounting problem

 fs/afs/write.c              |    1 
 fs/block_dev.c              |    1 
 fs/btrfs/disk-io.c          |    1 
 fs/btrfs/ordered-data.c     |    1 
 fs/fs-writeback.c           |  367 ++++++++++++++++--------------------
 fs/fuse/inode.c             |    2 
 fs/inode.c                  |    4 
 fs/jbd2/commit.c            |    1 
 fs/nfs/write.c              |    1 
 fs/nilfs2/the_nilfs.c       |    4 
 fs/super.c                  |    6 
 fs/sync.c                   |    9 
 fs/ubifs/budget.c           |   20 -
 fs/ubifs/super.c            |    1 
 include/linux/backing-dev.h |    3 
 include/linux/fs.h          |    2 
 include/linux/writeback.h   |    5 
 include/trace/events/ext4.h |    6 
 mm/backing-dev.c            |   90 ++++++--
 mm/page-writeback.c         |   22 --
 20 files changed, 273 insertions(+), 274 deletions(-)

-- 
Jens Axboe