[PATCHSET 1/3 blk-for-2.6.28] block: misc fixes and improvements

[Tejun Heo <tj@kernel.org>]

Hello,

This patchset contains the following five patches containing misc
fixes and improvements.

  0001-block-fix-partition-info-printouts.patch
  0002-block-don-t-grab-block_class_lock-unnecessarily.patch
  0003-block-use-class_dev_iterator-instead-of-class_for_e.patch
  0004-block-allow-deleting-zero-length-partition.patch
  0005-block-update-add_partition-error-handling.patch

Recent block_class iteration updates 5c6f35c5..27f3025 introduced a
few bugs and trivial user visible behavior change.  0001-0003 update
those issues and simplify related code using new class iterator.

0004 fixes deletion of zero sized partitions.

d805dda4 tried to fix error handling path in add_partition() but had a
few problems.  0005 fixes those and moves busy partition check into
add_partition().

This patchset is against

  blk-for-2.6.28 (9abd7c437c02e7448fb1d2d3cfc0b9c1ab77cf2d)
+ [1] klist-dont-iterate-over-deleted-entries
+ [2] use-klist-for-class-device-list-and-implement-iterator

and available in the following git tree.

  http://git.kernel.org/?p=linux/kernel/git/tj/misc.git;a=shortlog;h=block-misc-fixes
  git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git block-misc-fixes

with the following combined diffstat

 block/genhd.c         |  246 +++++++++++++++++++-------------------------------
 block/ioctl.c         |    9 -
 fs/partitions/check.c |   42 ++++----
 3 files changed, 121 insertions(+), 176 deletions(-)

Thanks.

--
tejun

[1] http://article.gmane.org/gmane.linux.kernel/725706
[2] http://article.gmane.org/gmane.linux.kernel/725708