Changes since v2: [1] 1/ Include a fix to revoke dax-mappings at device teardown time 2/ Include a blkdev_issue_flush implementation for pmem 3/ New block device ioctls to set/query dax mode, make dax opt-in 4/ Collect reviewed-by's [1]: https://lists.01.org/pipermail/linux-nvdimm/2015-October/002538.html --- There were several topics developed during this cycle, some are ready and some are not. The items needing more review and testing are the pmem+dax updates with mm, ext4, and xfs dependencies. Topics like the dax locking reworks, dax get_user_pages, and write-protecting dax ptes after fsync/msync. Instead, this more conservative set represents the fs and mm independent updates to dax and pmem: 1/ Enable dax mappings for raw block devices 2/ Use blk_queue_{enter|exit} and the availability of 'struct page' to fix lifetime issues and races with unloading the pmem driver. 3/ Enable blkdev_issue_flush to fix legacy apps that may dirty pmem via dax mmap I/O. Although legacy environments should consider disabling dax for apps that don't expect it. These depend on the latest 'libnvdimm-for-next' branch from nvdimm.git and the 'for-4.4/integrity' branch from Jens' tree. All but the last three have been out for review previously, and I am looking to submit them towards the back half of the merge window. --- Dan Williams (15): 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() libnvdimm, pmem: move request_queue allocation earlier in probe libnvdimm, pmem: fix size trim in pmem_direct_access() um: kill pfn_t kvm: rename pfn_t to kvm_pfn_t mm, dax, pmem: introduce pfn_t block: notify queue death confirmation dax, pmem: introduce zone_device_revoke() and devm_memunmap_pages() block: introduce bdev_file_inode() block: enable dax for raw block devices block, dax: make dax mappings opt-in by default dax: dirty extent notification pmem: blkdev_issue_flush support arch/arm/include/asm/kvm_mmu.h | 5 - arch/arm/kvm/mmu.c | 10 + arch/arm64/include/asm/kvm_mmu.h | 3 arch/mips/include/asm/kvm_host.h | 6 - arch/mips/kvm/emulate.c | 2 arch/mips/kvm/tlb.c | 14 +- arch/powerpc/include/asm/kvm_book3s.h | 4 - arch/powerpc/include/asm/kvm_ppc.h | 2 arch/powerpc/kvm/book3s.c | 6 - arch/powerpc/kvm/book3s_32_mmu_host.c | 2 arch/powerpc/kvm/book3s_64_mmu_host.c | 2 arch/powerpc/kvm/e500.h | 2 arch/powerpc/kvm/e500_mmu_host.c | 8 + arch/powerpc/kvm/trace_pr.h | 2 arch/powerpc/sysdev/axonram.c | 11 + arch/um/include/asm/page.h | 6 - arch/um/include/asm/pgtable-3level.h | 4 - arch/um/include/asm/pgtable.h | 2 arch/x86/include/asm/cacheflush.h | 4 + arch/x86/include/asm/pmem.h | 7 - arch/x86/kvm/iommu.c | 11 + arch/x86/kvm/mmu.c | 37 +++-- arch/x86/kvm/mmu_audit.c | 2 arch/x86/kvm/paging_tmpl.h | 6 - arch/x86/kvm/vmx.c | 2 arch/x86/kvm/x86.c | 2 block/blk-core.c | 13 +- block/blk-mq.c | 19 ++- block/blk.h | 13 -- block/ioctl.c | 42 ++++++ drivers/block/brd.c | 10 + drivers/nvdimm/pmem.c | 247 ++++++++++++++++++++++++++++----- drivers/s390/block/dcssblk.c | 13 +- fs/block_dev.c | 159 ++++++++++++++++++--- fs/dax.c | 242 ++++++++++++++++++++++---------- include/linux/blkdev.h | 41 +++++ include/linux/fs.h | 11 + include/linux/io.h | 17 -- include/linux/kvm_host.h | 37 +++-- include/linux/kvm_types.h | 2 include/linux/mm.h | 90 ++++++++++++ include/linux/pfn.h | 9 + include/uapi/linux/fs.h | 2 kernel/memremap.c | 98 +++++++++++++ virt/kvm/kvm_main.c | 47 +++--- 45 files changed, 949 insertions(+), 325 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html