nvme: support for zoned namespaces
Add support for NVM Express Zoned Namespaces (ZNS) Command Set defined
in NVM Express TP4053. Zoned namespaces are discovered based on their
Command Set Identifier reported in the namespaces Namespace
Identification Descriptor list. A successfully discovered Zoned
Namespace will be registered with the block layer as a host managed
zoned block device with Zone Append command support. A namespace that
does not support append is not supported by the driver.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Signed-off-by: Ajay Joshi <ajay.joshi@wdc.com>
Signed-off-by: Aravind Ramesh <aravind.ramesh@wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Matias Bjørling <matias.bjorling@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Keith Busch <keith.busch@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/block/Kconfig b/block/Kconfig
index 9357d73..bbad5e8 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -86,9 +86,10 @@
select MQ_IOSCHED_DEADLINE
help
Block layer zoned block device support. This option enables
- support for ZAC/ZBC host-managed and host-aware zoned block devices.
+ support for ZAC/ZBC/ZNS host-managed and host-aware zoned block
+ devices.
- Say yes here if you have a ZAC or ZBC storage device.
+ Say yes here if you have a ZAC, ZBC, or ZNS storage device.
config BLK_DEV_THROTTLING
bool "Block layer bio throttling support"