[PATCH 2/6] pmem: Add support for getgeo()

Ross Zwisler
2015-03-16T21:13:18Z

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(+)

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 */
--
1.9.3