Re: [PATCH v3 04/11] block: Introduce blkdev_nr_zones() helper

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On 10/12/18 4:30 AM, Damien Le Moal wrote:
Introduce the blkdev_nr_zones() helper function to get the total
number of zones of a zoned block device. This number is always 0 for a
regular block device (q->limits.zoned == BLK_ZONED_NONE case).

Replace hard-coded number of zones calculation in dmz_get_zoned_device()
with a call to this helper.

Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
  block/blk-zoned.c            | 27 +++++++++++++++++++++++++++
  drivers/md/dm-zoned-target.c |  3 +--
  include/linux/blkdev.h       |  5 +++++
  3 files changed, 33 insertions(+), 2 deletions(-)

Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@xxxxxxx			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)



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