Re-enable deep flush so that users always have a way to be sure that a write
does make it all the way out to the NVDIMM.

Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
 drivers/nvdimm/pmem.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 10041ac4032c..06f8dcc52ca6 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -335,8 +335,7 @@ static int pmem_attach_disk(struct device *dev,
                dev_warn(dev, "unable to guarantee persistence of writes\n");
                fua = 0;
        }
-       wbc = nvdimm_has_cache(nd_region) &&
-               !test_bit(ND_REGION_PERSIST_CACHE, &nd_region->flags);
+       wbc = nvdimm_has_cache(nd_region);
 
        if (!devm_request_mem_region(dev, res->start, resource_size(res),
                                dev_name(&ndns->dev))) {

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