On 10/18/2016 08:40 AM, Damien Le Moal wrote: > From: Damien Le Moal <damien.lemoal@xxxxxxxx> > > Add the zoned queue limit to indicate the zoning model of a block device. > Defined values are 0 (BLK_ZONED_NONE) for regular block devices, > 1 (BLK_ZONED_HA) for host-aware zone block devices and 2 (BLK_ZONED_HM) > for host-managed zone block devices. The standards defined drive managed > model is not defined here since these block devices do not provide any > command for accessing zone information. Drive managed model devices will > be reported as BLK_ZONED_NONE. > > The helper functions blk_queue_zoned_model and bdev_zoned_model return > the zoned limit and the functions blk_queue_is_zoned and bdev_is_zoned > return a boolean for callers to test if a block device is zoned. > > The zoned attribute is also exported as a string to applications via > sysfs. BLK_ZONED_NONE shows as "none", BLK_ZONED_HA as "host-aware" and > BLK_ZONED_HM as "host-managed". > > Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxxx> > Reviewed-by: Christoph Hellwig <hch@xxxxxx> > Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> > Reviewed-by: Shaun Tancheff <shaun.tancheff@xxxxxxxxxxx> > Tested-by: Shaun Tancheff <shaun.tancheff@xxxxxxxxxxx> > --- > Documentation/ABI/testing/sysfs-block | 16 ++++++++++++ > block/blk-settings.c | 1 + > block/blk-sysfs.c | 18 ++++++++++++++ > include/linux/blkdev.h | 47 +++++++++++++++++++++++++++++++++++ > 4 files changed, 82 insertions(+) > 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) -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
