[PATCHSET block/for-3.18] block, bdi: various cleanups

[Tejun Heo]

Hello,

This patchset contains the following six bdi related cleanup patches.
Each patch should be fairly self-explanatory.

 0001-block-bdi-an-active-gendisk-always-has-a-request_que.patch
 0002-bdi-remove-unused-stuff.patch
 0003-bdi-remove-bdi-wb_lock-locking-around-bdi-dev-cleari.patch
 0004-bdi-make-backing_dev_info-wb.dwork-canceling-stricte.patch
 0005-bdi-explain-the-dirty-list-transferring-in-bdi_destr.patch
 0006-bdi-reimplement-bdev_inode_switch_bdi.patch

The patchset is on top of 7d1311b93e58 ("Linux 3.17-rc1") and also
available in the following git branch.

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git review-bdi-cleanups

diffstat follows.  Thanks.

 block/blk-core.c            |   10 +++-------
 block/compat_ioctl.c        |    4 ----
 block/ioctl.c               |    4 ----
 fs/block_dev.c              |   34 +++++++++++-----------------------
 fs/btrfs/disk-io.c          |    2 +-
 fs/xfs/xfs_buf.c            |    2 --
 include/linux/backing-dev.h |    4 ----
 include/linux/blkdev.h      |    2 +-
 mm/backing-dev.c            |   40 ++++++++++++++++------------------------
 9 files changed, 32 insertions(+), 70 deletions(-)

--
tejun
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