[PATCH 0/8] Per-bdi writeback flusher threads v17

[Jens Axboe]

Hi,

Continuing the daily releases of this patchset to ensure it's in
solid shape for 2.6.32, here's version 17. Changes since v16:

- Looking at the callers of sb writeback, WB_SYNC_ALL (data integrity)
  writeback already has the super_block pinned and doesn't require
  any further actions. So go back to the down_read_trylock() method
  of pinning the sb and also check for sb->s_root for WB_SYNC_NONE
  writeout. This is all packaged into pin_sb_for_writeback() and
  unpin_sb_for_writeback().
- Get rid of exported generic_sync_sb_inodes() and export sync_inodes_sb()
  for non-integrity writeback and sync_inodes_sb_wait() for integrity
  writeback, as suggested by hch.
- Folded the 'move sb argument to wbc' into the main patch, with the
  addition of the above sync_inodes_sb()/sync_inodes_sb_wait() it
  didn't make sense to keep it separate anymore because wbc isn't
  passed in outside of the code.
- Update the changelog on the main patch, the one switching to per-bdi
  flushing.

Please review, thanks!

 b/block/blk-core.c                 |    1 
 b/drivers/block/aoe/aoeblk.c       |    1 
 b/drivers/char/mem.c               |    1 
 b/drivers/staging/pohmelfs/inode.c |    9 
 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                |  998 +++++++++++++++++++++--------
 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                        |   10 
 b/fs/sysfs/inode.c                 |    1 
 b/fs/ubifs/budget.c                |   16 
 b/fs/ubifs/super.c                 |    9 
 b/include/linux/backing-dev.h      |   56 +
 b/include/linux/fs.h               |    8 
 b/include/linux/writeback.h        |   23 
 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              |  174 +----
 b/mm/swap_state.c                  |    1 
 b/mm/vmscan.c                      |    2 
 mm/pdflush.c                       |  269 -------
 30 files changed, 1238 insertions(+), 744 deletions(-)

-- 
Jens Axboe

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