Lightnvm fixes and updates for 4.5-rc1

Hi Linus,

This should have been part of the drivers branch, but it arrived a bit late and wasn't based on the official core block driver branch. So they got a small scolding, but got a pass since it's still new. Hence it's in a separate branch.

This is mostly pure fixes, contained to lightnvm/, and minor feature additions.

Please pull!

git://git.kernel.dk/linux-block.git for-4.5/lightnvm

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Chao Yu (1):
lightnvm: fix incorrect nr_free_blocks stat

Javier Gonzalez (1):
lightnvm: add check after mempool allocation

Javier González (2):
lightnvm: reference rrpc lun in rrpc block
lightnvm: manage open and closed blocks separately

Jens Axboe (1):
lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM

Matias Bjørling (15):
lightnvm: move ppa erase logic to core
lightnvm: refactor rqd ppa list into set/free
lightnvm: refactor end_io functions for sync
lightnvm: return the get_bb_tbl return value
lightnvm: sectors first in ppa list
lightnvm: support multiple ppas in nvm_erase_ppa
lightnvm: move rq->error to nvm_rq->error
lightnvm: introduce nvm_submit_ppa
lightnvm: fix missing grown bad block type
lightnvm: add mccap support
lightnvm: introduce mlc lower page table mappings
lightnvm: core on-disk initialization
lightnvm: introduce ioctl to initialize device
lightnvm: use system block for mm initialization
lightnvm: introduce factory reset

Wenwei Tao (6):
lightnvm: fix bio submission issue
lightnvm: unlock rq and free ppa_list on submission fail
lightnvm: check bi_error in gc
lightnvm: put block back to gc list on its reclaim fail
lightnvm: fix locking and mempool in rrpc_lun_gc
lightnvm: move the pages per block check out of the loop

 drivers/block/null_blk.c      |   3 +-
 drivers/lightnvm/Makefile     |   2 +-
 drivers/lightnvm/core.c       | 340 ++++++++++++++++++-
 drivers/lightnvm/gennvm.c     | 198 +++++------
 drivers/lightnvm/rrpc.c       | 104 ++++--
 drivers/lightnvm/rrpc.h       |  13 +-
 drivers/lightnvm/sysblk.c     | 741 ++++++++++++++++++++++++++++++++++++++++++
 drivers/nvme/host/lightnvm.c  |  32 +-
 include/linux/lightnvm.h      | 238 ++++++++++----
 include/uapi/linux/lightnvm.h |  31 ++
 10 files changed, 1476 insertions(+), 226 deletions(-)
 create mode 100644 drivers/lightnvm/sysblk.c

Jens Axboe