[PATCH 0/7] Per-bdi writeback flusher threads v15

[Jens Axboe]

Hi,

Here's the 15th version of the writeback patches. Changes since v14:

- Collapsed a few patches and got rid of the multiple thread support.
  The work items remain, it's been well tested and means that you
  can queue work for a bdi without blocking and waiting for it to
  finish the existing work. Lazy exit is now included in the
  first patch.
- I kept the 'remove pdflush' patch separate. The main patch is
  already big enough, and thinking about it, I think it makes sense
  to retain as a separate patch.

Christoph, let me know if there are things you are still not happy
with and I will reply/address them. Note that this series has only
received a light testing. This means that it boots and seems to work
(flushes data on sync and at intervals) and does not corrupt data,
but it hasn't received a thorough testing yet. That will come tomorrow.
But I wanted to push this out there, so we can settle the code base
quickly again.

 b/block/blk-core.c            |    1 
 b/drivers/block/aoe/aoeblk.c  |    1 
 b/drivers/char/mem.c          |    1 
 b/fs/btrfs/disk-io.c          |    1 
 b/fs/buffer.c                 |    2 
 b/fs/char_dev.c               |    1 
 b/fs/configfs/inode.c         |    1 
 b/fs/fs-writeback.c           |  907 ++++++++++++++++++++++++----------
 b/fs/fuse/inode.c             |    1 
 b/fs/hugetlbfs/inode.c        |    1 
 b/fs/nfs/client.c             |    1 
 b/fs/ocfs2/dlm/dlmfs.c        |    1 
 b/fs/ramfs/inode.c            |    1 
 b/fs/super.c                  |    3 
 b/fs/sync.c                   |    2 
 b/fs/sysfs/inode.c            |    1 
 b/fs/ubifs/super.c            |    1 
 b/include/linux/backing-dev.h |   57 ++
 b/include/linux/fs.h          |   10 
 b/include/linux/writeback.h   |   19 
 b/kernel/cgroup.c             |    1 
 b/kernel/sysctl.c             |    8 
 b/mm/Makefile                 |    2 
 b/mm/backing-dev.c            |  379 +++++++++++++-
 b/mm/page-writeback.c         |  165 +-----
 b/mm/swap_state.c             |    1 
 b/mm/vmscan.c                 |    2 
 mm/pdflush.c                  |  269 ----------
 28 files changed, 1145 insertions(+), 695 deletions(-)

-- 
Jens Axboe

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