NVMe: Add getgeo to block ops

Some programs require HDIO_GETGEO work, which requires we implement
getgeo.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 2d69bfec95a4..596e2abd7971 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -25,6 +25,7 @@
 #include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/genhd.h>
+#include <linux/hdreg.h>
 #include <linux/idr.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -1714,12 +1715,22 @@ static void nvme_release(struct gendisk *disk, fmode_t mode)
         kref_put(&dev->kref, nvme_free_dev);
 }
 
+static int nvme_getgeo(struct block_device *bd, struct hd_geometry *geo)
+{
+        /* some standard values */
+        geo->heads = 1 << 6;
+        geo->sectors = 1 << 5;
+        geo->cylinders = get_capacity(bd->bd_disk) >> 11;
+        return 0;
+}
+
 static const struct block_device_operations nvme_fops = {
         .owner          = THIS_MODULE,
         .ioctl          = nvme_ioctl,
         .compat_ioctl   = nvme_compat_ioctl,
         .open           = nvme_open,
         .release        = nvme_release,
+        .getgeo         = nvme_getgeo,
 };
 
 static void nvme_resubmit_bios(struct nvme_queue *nvmeq)