d7c000dc0851035c5003bf9d47733d0b257b
author Christian Borntraeger <borntraeger@de.ibm.com> 1201107410 +0100
committer Rusty Russell <rusty@rustcorp.com.au> 1202129409 +1100

virtio_blk: provide getgeo

Rusty,

I currently try to make my guest boot from an virtio root device
without having an external kernel. Some of the tools that I tried
expect HDIO_GETGEO to work. The most interesting value is likely
the geo.start value to get the offset of a partition. This value
is filled by block/ioctl.c if fops->getgeo is set. This patch also
fills in some standard values for heads, sectors and cylinders.

Makes sense?

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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