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-rw-r--r--drivers/nvdimm/btt.c3
-rw-r--r--drivers/nvdimm/pmem.c2
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index d5612bd1cc81..e949e3302af4 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -23,6 +23,7 @@
#include <linux/ndctl.h>
#include <linux/fs.h>
#include <linux/nd.h>
+#include <linux/backing-dev.h>
#include "btt.h"
#include "nd.h"
@@ -1402,6 +1403,8 @@ static int btt_blk_init(struct btt *btt)
btt->btt_disk->private_data = btt;
btt->btt_disk->queue = btt->btt_queue;
btt->btt_disk->flags = GENHD_FL_EXT_DEVT;
+ btt->btt_disk->queue->backing_dev_info->capabilities |=
+ BDI_CAP_SYNCHRONOUS_IO;
blk_queue_make_request(btt->btt_queue, btt_make_request);
blk_queue_logical_block_size(btt->btt_queue, btt->sector_size);
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 39dfd7affa31..7fbc5c5dc8e1 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -31,6 +31,7 @@
#include <linux/uio.h>
#include <linux/dax.h>
#include <linux/nd.h>
+#include <linux/backing-dev.h>
#include "pmem.h"
#include "pfn.h"
#include "nd.h"
@@ -394,6 +395,7 @@ static int pmem_attach_disk(struct device *dev,
disk->fops = &pmem_fops;
disk->queue = q;
disk->flags = GENHD_FL_EXT_DEVT;
+ disk->queue->backing_dev_info->capabilities |= BDI_CAP_SYNCHRONOUS_IO;
nvdimm_namespace_disk_name(ndns, disk->disk_name);
set_capacity(disk, (pmem->size - pmem->pfn_pad - pmem->data_offset)
/ 512);