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Subject[PATCH 0/5] block, dax: updates for 4.4
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As requested [1], break out the block specific updates from the dax-gup
series [2], to merge via the block tree.

1/ Enable dax mappings for raw block devices. This addresses the review
comments (from Ross and Honza) from the RFC [3].

2/ Introduce dax_map_atomic() to fix races between device teardown and
new mapping requests. This depends on commit 2a9067a91825 "block:
generic request_queue reference counting" in for-4.4/integrity branch
of the block tree.

3/ Cleanup clear_pmem() and its usage in dax. This depends on commit
0f90cc6609c7 "mm, dax: fix DAX deadlocks" that was merged into v4.3-rc6.

These pass the nvdimm unit tests and have passed a 0day-kbuild-robot run.

[1]: https://lists.01.org/pipermail/linux-nvdimm/2015-October/002531.html
[2]: https://lists.01.org/pipermail/linux-nvdimm/2015-October/002387.html
[3]: https://lists.01.org/pipermail/linux-nvdimm/2015-October/002512.html

---

Dan Williams (5):
pmem, dax: clean up clear_pmem()
dax: increase granularity of dax_clear_blocks() operations
block, dax: fix lifetime of in-kernel dax mappings with dax_map_atomic()
block: introduce file_bd_inode()
block: enable dax for raw block devices


arch/x86/include/asm/pmem.h | 7 --
block/blk.h | 2
fs/block_dev.c | 73 ++++++++++++++--
fs/dax.c | 196 +++++++++++++++++++++++++++----------------
include/linux/blkdev.h | 2
5 files changed, 191 insertions(+), 89 deletions(-)


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