[PATCH 4/4] libnvdimm/btt: implement ->set_read_only to hook into BLKROSET processing

[Huaisheng Ye]

Implement the ->set_read_only method for nd_btt.

Signed-off-by: Huaisheng Ye <huaisheng...@intel.com>
---
 drivers/nvdimm/btt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 92dec4952297..91fcdac7858f 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1514,6 +1514,7 @@ static const struct block_device_operations btt_fops = {
        .submit_bio =           btt_submit_bio,
        .rw_page =              btt_rw_page,
        .getgeo =               btt_getgeo,
+       .set_read_only =        nd_set_ro,
 };
 
 static int btt_blk_init(struct btt *btt)
-- 
2.27.0