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    Subject[PATCH 2/3] scsi: add scsi_device->alt_capacity
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    Add scsi_device->alt_capacity and let sd pass it over to genhd.  This
    is to allow SCSI low level drivers to configure alt_capacity via
    slave_configure().

    Signed-off-by: Tejun Heo <tj@kernel.org>
    ---
    drivers/scsi/sd.c | 1 +
    include/scsi/scsi_device.h | 1 +
    2 files changed, 2 insertions(+), 0 deletions(-)
    diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
    index d57566b..b83d850 100644
    --- a/drivers/scsi/sd.c
    +++ b/drivers/scsi/sd.c
    @@ -1751,6 +1751,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
    blk_queue_ordered(sdkp->disk->queue, ordered, sd_prepare_flush);

    set_capacity(disk, sdkp->capacity);
    + set_alt_capacity(disk, sdp->alt_capacity);
    kfree(buffer);

    out:
    diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
    index 01a4c58..55be54a 100644
    --- a/include/scsi/scsi_device.h
    +++ b/include/scsi/scsi_device.h
    @@ -92,6 +92,7 @@ struct scsi_device {
    unsigned int manufacturer; /* Manufacturer of device, for using
    * vendor-specific cmd's */
    unsigned sector_size; /* size in bytes */
    + size_t alt_capacity; /* alternative capacity, used by sd */

    void *hostdata; /* available to low-level driver */
    char type;
    --
    1.6.0.2


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