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pmem: kill __pmem address space

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The __pmem address space was meant to annotate codepaths that touch
persistent memory and need to coordinate a call to wmb_pmem().  Now that
wmb_pmem() is gone, there is little need to keep this annotation.

Cc: Christoph Hellwig <[email protected]>
Cc: Ross Zwisler <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Dan Williams 2016-06-03 18:06:47 -07:00
commit 7a9eb20666
15 changed files with 56 additions and 102 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/nvdimm/pmem.c
View file

@ -74,7 +74,7 @@ static int pmem_do_bvec(struct pmem_device *pmem, struct page *page,
bool bad_pmem = false;
void *mem = kmap_atomic(page);
phys_addr_t pmem_off = sector * 512 + pmem->data_offset;
void __pmem *pmem_addr = pmem->virt_addr + pmem_off;
void *pmem_addr = pmem->virt_addr + pmem_off;
if (unlikely(is_bad_pmem(&pmem->bb, sector, len)))
bad_pmem = true;
@ -173,7 +173,7 @@ static int pmem_rw_page(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)
void **kaddr, pfn_t *pfn, long size)
{
struct pmem_device *pmem = bdev->bd_queue->queuedata;
resource_size_t offset = sector * 512 + pmem->data_offset;
@ -284,7 +284,7 @@ static int pmem_attach_disk(struct device *dev,
if (IS_ERR(addr))
return PTR_ERR(addr);
pmem->virt_addr = (void __pmem *) addr;
pmem->virt_addr = addr;
blk_queue_write_cache(q, true, true);
blk_queue_make_request(q, pmem_make_request);

4
drivers/nvdimm/pmem.h
View file

@ -6,7 +6,7 @@
#include <linux/fs.h>
long pmem_direct_access(struct block_device *bdev, sector_t sector,
void __pmem **kaddr, pfn_t *pfn, long size);
void **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 */
@ -14,7 +14,7 @@ struct pmem_device {
/* when non-zero this device is hosting a 'pfn' instance */
phys_addr_t data_offset;
u64 pfn_flags;
void __pmem *virt_addr;
void *virt_addr;
/* immutable base size of the namespace */
size_t size;
/* trim size when namespace capacity has been section aligned */