We add new members to pfn superblock (PAGE_SIZE and struct page size) in this series. This is now checked while initializing the namespace. If we find a mismatch we mark the namespace disabled.
This series also handle configs where hugepage support is not enabled by default. This can result in different align restrictions for dax namespace. We mark the dax namespace disabled if we find the alignment not supported. Aneesh Kumar K.V (4): nvdimm: Consider probe return -EOPNOTSUPP as success mm/nvdimm: Add page size and struct page size to pfn superblock mm/nvdimm: Use correct #defines instead of open coding mm/nvdimm: Pick the right alignment default when creating dax devices arch/powerpc/include/asm/libnvdimm.h | 9 ++++ arch/powerpc/mm/Makefile | 1 + arch/powerpc/mm/nvdimm.c | 34 +++++++++++++++ arch/x86/include/asm/libnvdimm.h | 19 +++++++++ drivers/nvdimm/bus.c | 2 +- drivers/nvdimm/label.c | 2 +- drivers/nvdimm/namespace_devs.c | 6 +-- drivers/nvdimm/nd.h | 6 --- drivers/nvdimm/pfn.h | 5 ++- drivers/nvdimm/pfn_devs.c | 62 ++++++++++++++++++++++++++-- drivers/nvdimm/pmem.c | 26 ++++++++++-- drivers/nvdimm/region_devs.c | 8 ++-- include/linux/huge_mm.h | 7 +++- 13 files changed, 163 insertions(+), 24 deletions(-) create mode 100644 arch/powerpc/include/asm/libnvdimm.h create mode 100644 arch/powerpc/mm/nvdimm.c create mode 100644 arch/x86/include/asm/libnvdimm.h -- 2.21.0
