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| author | Dan Williams <dan.j.williams@intel.com> | 2016-03-22 10:22:16 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-04-22 22:26:23 +0300 |
| commit | 200c79da824c978fcf6eec1dc9c0a1e521133267 (patch) | |
| tree | bbc2182ead10eaa034278bb42c01a924db9a7d7d /include/linux/nd.h | |
| parent | 947df02d255a6a81a3832e831c5ca02078cfd529 (diff) | |
| download | linux-200c79da824c978fcf6eec1dc9c0a1e521133267.tar.xz | |
libnvdimm, pmem, pfn: make pmem_rw_bytes generic and refactor pfn setup
In preparation for providing an alternative (to block device) access
mechanism to persistent memory, convert pmem_rw_bytes() to
nsio_rw_bytes(). This allows ->rw_bytes() functionality without
requiring a 'struct pmem_device' to be instantiated.
In other words, when ->rw_bytes() is in use i/o is driven through
'struct nd_namespace_io', otherwise it is driven through 'struct
pmem_device' and the block layer. This consolidates the disjoint calls
to devm_exit_badblocks() and devm_memunmap() into a common
devm_nsio_disable() and cleans up the init path to use a unified
pmem_attach_disk() implementation.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/nd.h')
| -rw-r--r-- | include/linux/nd.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/nd.h b/include/linux/nd.h index 5ea4aec7fd63..aee2761d294c 100644 --- a/include/linux/nd.h +++ b/include/linux/nd.h @@ -15,6 +15,7 @@ #include <linux/fs.h> #include <linux/ndctl.h> #include <linux/device.h> +#include <linux/badblocks.h> enum nvdimm_event { NVDIMM_REVALIDATE_POISON, @@ -55,13 +56,19 @@ static inline struct nd_namespace_common *to_ndns(struct device *dev) } /** - * struct nd_namespace_io - infrastructure for loading an nd_pmem instance + * struct nd_namespace_io - device representation of a persistent memory range * @dev: namespace device created by the nd region driver * @res: struct resource conversion of a NFIT SPA table + * @size: cached resource_size(@res) for fast path size checks + * @addr: virtual address to access the namespace range + * @bb: badblocks list for the namespace range */ struct nd_namespace_io { struct nd_namespace_common common; struct resource res; + resource_size_t size; + void __pmem *addr; + struct badblocks bb; }; /** |