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authorDan Williams <dan.j.williams@intel.com>2016-01-16 03:56:26 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-16 04:56:32 +0300
commitd2c0f041e1bb1260629ecea2161adb9778945aa3 (patch)
treeea5872316fdab194db4faa7a322c6d50652a1c72 /drivers/nvdimm/pfn_devs.c
parent4b94ffdc4163bae1ec73b6e977ffb7a7da3d06d3 (diff)
downloadlinux-d2c0f041e1bb1260629ecea2161adb9778945aa3.tar.xz
libnvdimm, pfn, pmem: allocate memmap array in persistent memory
Use the new vmem_altmap capability to enable the pmem driver to arrange for a struct page memmap to be established in persistent memory. [linux@roeck-us.net: mn10300: declare __pfn_to_phys() to fix build error] Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/nvdimm/pfn_devs.c')
-rw-r--r--drivers/nvdimm/pfn_devs.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index f9b674bc49db..0cc9048b86e2 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -83,8 +83,7 @@ static ssize_t mode_store(struct device *dev,
if (strncmp(buf, "pmem\n", n) == 0
|| strncmp(buf, "pmem", n) == 0) {
- /* TODO: allocate from PMEM support */
- rc = -ENOTTY;
+ nd_pfn->mode = PFN_MODE_PMEM;
} else if (strncmp(buf, "ram\n", n) == 0
|| strncmp(buf, "ram", n) == 0)
nd_pfn->mode = PFN_MODE_RAM;