As I discussed with Alasdair and Heinz, I have split my "dm-raid45 using md/raid5.c" patches in to two sets. The first set contains only changes to md code and is now in my for-next branch git://neil.brown.name/md for-next so it should appear in linux-next soon and I plan to submit it for the next merge window. The second set is all the dm specific bits. They follow this email. I'm hoping Alasdair will have time to review and approve these in time for the next merge window. All other review and comments are, of course, most welcome. Thanks, NeilBrown --- NeilBrown (8): md/dm: create dm-raid456 module using md/raid5 dm-raid456: add congestion checking. dm-raid456: support unplug dm-raid456: add support for setting IO hints. dm-raid456: add suspend/resume method dm-raid456: add message handler. dm-dirty-log: allow log size to be different from target size. dm-raid456: switch to use dm_dirty_log for tracking dirty regions. drivers/md/Kconfig | 8 + drivers/md/Makefile | 1 drivers/md/dm-log-userspace-base.c | 11 - drivers/md/dm-log.c | 18 + drivers/md/dm-raid1.c | 4 drivers/md/dm-raid456.c | 576 ++++++++++++++++++++++++++++++++++++ drivers/md/dm-table.c | 19 + include/linux/device-mapper.h | 13 + include/linux/dm-dirty-log.h | 3 9 files changed, 639 insertions(+), 14 deletions(-) create mode 100644 drivers/md/dm-raid456.c -- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel