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x86, dax, pmem: remove indirection around memcpy_from_pmem()

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memcpy_from_pmem() maps directly to memcpy_mcsafe(). The wrapper
serves no real benefit aside from affording a more generic function name
than the x86-specific 'mcsafe'. However this would not be the first time
that x86 terminology leaked into the global namespace. For lack of
better name, just use memcpy_mcsafe() directly.

This conversion also catches a place where we should have been using
plain memcpy, acpi_nfit_blk_single_io().

Cc: <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Jeff Moyer <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Ross Zwisler <[email protected]>
Acked-by: Tony Luck <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Dan Williams 2017-01-13 14:14:23 -08:00
commit 6abccd1bfe
7 changed files with 12 additions and 32 deletions
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2
drivers/nvdimm/claim.c
View file

@ -239,7 +239,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
if (rw == READ) {
if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align)))
return -EIO;
return memcpy_from_pmem(buf, nsio->addr + offset, size);
return memcpy_mcsafe(buf, nsio->addr + offset, size);
}
if (unlikely(is_bad_pmem(&nsio->bb, sector, sz_align))) {

2
drivers/nvdimm/pmem.c
View file

@ -89,7 +89,7 @@ static int read_pmem(struct page *page, unsigned int off,
int rc;
void *mem = kmap_atomic(page);
rc = memcpy_from_pmem(mem + off, pmem_addr, len);
rc = memcpy_mcsafe(mem + off, pmem_addr, len);
kunmap_atomic(mem);
if (rc)
return -EIO;