[2/6] pmem: Add support for getgeo()
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Message ID 1426540380-24503-3-git-send-email-ross.zwisler@linux.intel.com
State New, archived
Headers show

Commit Message

Ross Zwisler March 16, 2015, 9:12 p.m. UTC
Some programs require HDIO_GETGEO work, which requires we implement
getgeo.  Based off of the work done to the NVMe driver in this commit:

commit 4cc09e2dc4cb ("NVMe: Add getgeo to block ops")

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: linux-nvdimm@lists.01.org
Cc: linux-fsdevel@vger.kernel.org
Cc: axboe@kernel.dk
Cc: hch@infradead.org
Cc: riel@redhat.com
---
 drivers/block/pmem.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch
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diff --git a/drivers/block/pmem.c b/drivers/block/pmem.c
index d366b9b..60bbe0d 100644
--- a/drivers/block/pmem.c
+++ b/drivers/block/pmem.c
@@ -50,6 +50,15 @@  struct pmem_device {
 	size_t			size;
 };
 
+static int pmem_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;
+}
+
 /*
  * direct translation from (pmem,sector) => void*
  * We do not require that sector be page aligned.
@@ -176,6 +185,7 @@  out:
 
 static const struct block_device_operations pmem_fops = {
 	.owner =		THIS_MODULE,
+	.getgeo =		pmem_getgeo,
 };
 
 /* Kernel module stuff */