From: Dan Williams <dan.j.williams@intel.com>
Date: Thu, 2 Jun 2016 06:14:22 +0000 (-0700)
Subject: libnvdimm, pmem: use nvdimm_flush() for namespace I/O writes
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=91131dbd1d50637dc338526502a1a2ec5a7f97df;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

libnvdimm, pmem: use nvdimm_flush() for namespace I/O writes

nsio_rw_bytes() is used to write info block metadata to the namespace,
so it should trigger a flush after every write.  Replace wmb_pmem() with
nvdimm_flush() in this path.

Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 9997ff94a132..d5dc80c48b4c 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -240,7 +240,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
 		return memcpy_from_pmem(buf, nsio->addr + offset, size);
 	} else {
 		memcpy_to_pmem(nsio->addr + offset, buf, size);
-		wmb_pmem();
+		nvdimm_flush(to_nd_region(ndns->dev.parent));
 	}
 
 	return 0;