tree beadd56b5142b32bc63002efdcfcee4a2ff82bf0
parent c7126d5b3216e57b4e388e3fd34faa785b8e4bd0
author Christoph Hellwig <hch@lst.de> 1276617172 +0200
committer Kevin Wolf <kwolf@redhat.com> 1277210281 +0200

block: fix physical_block_size calculation

Both SCSI and virtio expect the physical block size relative to the
logical block size.  So get the factor first before calculating the
log2.

Reported-by: Mike Cao <bcao@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>