diff options
| author | Christoph Hellwig <hch@lst.de> | 2018-07-19 17:35:20 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-07-27 20:13:02 +0300 |
| commit | 72efd25dcf4f6310e9e6fa85620aa443b27c23fe (patch) | |
| tree | 0505847a47806f6d0ac9feed9ae081fe8d55c381 /drivers/nvme/target/configfs.c | |
| parent | 793c7cfce02ce88b7bd67d43834c052d16c096e3 (diff) | |
| download | linux-72efd25dcf4f6310e9e6fa85620aa443b27c23fe.tar.xz | |
nvmet: add minimal ANA support
Add support for Asynchronous Namespace Access as specified in NVMe 1.3
TP 4004.
Just add a default ANA group 1 that is optimized on all ports. This is
(and will remain) the default assignment for any namespace not epxlicitly
assigned to another ANA group. The ANA state can be manually changed
through the configfs interface, including the change state.
Includes fixes and improvements from Hannes Reinecke.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Diffstat (limited to 'drivers/nvme/target/configfs.c')
| -rw-r--r-- | drivers/nvme/target/configfs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 3ba5ea5c4376..b3c62b41b2ae 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -923,6 +923,7 @@ static void nvmet_port_release(struct config_item *item) { struct nvmet_port *port = to_nvmet_port(item); + kfree(port->ana_state); kfree(port); } @@ -959,6 +960,15 @@ static struct config_group *nvmet_ports_make(struct config_group *group, if (!port) return ERR_PTR(-ENOMEM); + port->ana_state = kcalloc(NVMET_MAX_ANAGRPS + 1, + sizeof(*port->ana_state), GFP_KERNEL); + if (!port->ana_state) { + kfree(port); + return ERR_PTR(-ENOMEM); + } + + port->ana_state[NVMET_DEFAULT_ANA_GRPID] = NVME_ANA_OPTIMIZED; + INIT_LIST_HEAD(&port->entry); INIT_LIST_HEAD(&port->subsystems); INIT_LIST_HEAD(&port->referrals); |