libnvdimm, pfn: add 'align' attribute, default to HPAGE_SIZE

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When setting aside capacity for struct page it must be aligned to the
largest mapping size that is to be made available via DAX.  Make the
alignment configurable to enable support for 1GiB page-size mappings.

The offset for PFN_MODE_RAM may now be larger than SZ_8K, so fixup the
offset check in nvdimm_namespace_attach_pfn().

Reported-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

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This commit is contained in:

Dan Williams 2015-12-10 14:45:23 -08:00

parent f7c6ab80fa

commit 315c562536

3 changed files with 65 additions and 3 deletions

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1

drivers/nvdimm/nd.h

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61

drivers/nvdimm/pfn_devs.c

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6

drivers/nvdimm/pmem.c

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