diff options
Diffstat (limited to 'drivers/nvdimm')
| -rw-r--r-- | drivers/nvdimm/pmem.c | 18 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.h | 24 |
2 files changed, 27 insertions, 15 deletions
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index ba253df6233f..b6fcb97a601c 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -29,23 +29,10 @@ #include <linux/slab.h> #include <linux/pmem.h> #include <linux/nd.h> +#include "pmem.h" #include "pfn.h" #include "nd.h" -struct pmem_device { - /* One contiguous memory region per device */ - phys_addr_t phys_addr; - /* when non-zero this device is hosting a 'pfn' instance */ - phys_addr_t data_offset; - u64 pfn_flags; - void __pmem *virt_addr; - /* immutable base size of the namespace */ - size_t size; - /* trim size when namespace capacity has been section aligned */ - u32 pfn_pad; - struct badblocks bb; -}; - static void pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset, unsigned int len) { @@ -163,7 +150,8 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector, return rc; } -static long pmem_direct_access(struct block_device *bdev, sector_t sector, +/* see "strong" declaration in tools/testing/nvdimm/pmem-dax.c */ +__weak long pmem_direct_access(struct block_device *bdev, sector_t sector, void __pmem **kaddr, pfn_t *pfn, long size) { struct pmem_device *pmem = bdev->bd_queue->queuedata; diff --git a/drivers/nvdimm/pmem.h b/drivers/nvdimm/pmem.h new file mode 100644 index 000000000000..c48d4e3aa346 --- /dev/null +++ b/drivers/nvdimm/pmem.h @@ -0,0 +1,24 @@ +#ifndef __NVDIMM_PMEM_H__ +#define __NVDIMM_PMEM_H__ +#include <linux/badblocks.h> +#include <linux/types.h> +#include <linux/pfn_t.h> +#include <linux/fs.h> + +long pmem_direct_access(struct block_device *bdev, sector_t sector, + void __pmem **kaddr, pfn_t *pfn, long size); +/* this definition is in it's own header for tools/testing/nvdimm to consume */ +struct pmem_device { + /* One contiguous memory region per device */ + phys_addr_t phys_addr; + /* when non-zero this device is hosting a 'pfn' instance */ + phys_addr_t data_offset; + u64 pfn_flags; + void __pmem *virt_addr; + /* immutable base size of the namespace */ + size_t size; + /* trim size when namespace capacity has been section aligned */ + u32 pfn_pad; + struct badblocks bb; +}; +#endif /* __NVDIMM_PMEM_H__ */ |