linux-kernel - [PATCH v2 13/17] libnvdimm, pmem: use nvdimm

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Message-ID: <146812113854.32932.4086784403471595345.stgit@dwillia2-desk3.amr.corp.intel.com>
Date:	Sat, 09 Jul 2016 20:25:38 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	linux-nvdimm@...ts.01.org
Cc:	linux-fsdevel@...r.kernel.org, linux-acpi@...r.kernel.org,
	Ross Zwisler <ross.zwisler@...ux.intel.com>, hch@....de,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 13/17] 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@...ux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 drivers/nvdimm/claim.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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;