diff options
| author | Bryant G. Ly <bryantly@linux.vnet.ibm.com> | 2017-06-06 17:28:49 +0300 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-07-07 09:11:30 +0300 |
| commit | 1068be7bd4b05ca41a6a8de724f52a9c87861412 (patch) | |
| tree | 5ce826122611e651f0a684cb220c36f9aaa9b609 | |
| parent | 9a8bb60650b3d6994bd19a3200941f029c95a7a0 (diff) | |
| download | linux-1068be7bd4b05ca41a6a8de724f52a9c87861412.tar.xz | |
tcmu: Add netlink for device reconfiguration
This gives tcmu the ability to handle events that can cause
reconfiguration, such as resize, path changes, write_cache, etc...
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Reviewed-By: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/target_core_user.c | 12 | ||||
| -rw-r--r-- | include/uapi/linux/target_core_user.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 0c797cc69d9e..ae918222284b 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1562,6 +1562,7 @@ static ssize_t tcmu_emulate_write_cache_store(struct config_item *item, { struct se_dev_attrib *da = container_of(to_config_group(item), struct se_dev_attrib, da_group); + struct tcmu_dev *udev = TCMU_DEV(da->da_dev); int val; int ret; @@ -1570,6 +1571,17 @@ static ssize_t tcmu_emulate_write_cache_store(struct config_item *item, return ret; da->emulate_write_cache = val; + + /* Check if device has been configured before */ + if (tcmu_dev_configured(udev)) { + ret = tcmu_netlink_event(TCMU_CMD_RECONFIG_DEVICE, + udev->uio_info.name, + udev->uio_info.uio_dev->minor); + if (ret) { + pr_err("Unable to reconfigure device\n"); + return ret; + } + } return count; } CONFIGFS_ATTR(tcmu_, emulate_write_cache); diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h index af17b4154ef6..403a61faada0 100644 --- a/include/uapi/linux/target_core_user.h +++ b/include/uapi/linux/target_core_user.h @@ -130,6 +130,7 @@ enum tcmu_genl_cmd { TCMU_CMD_UNSPEC, TCMU_CMD_ADDED_DEVICE, TCMU_CMD_REMOVED_DEVICE, + TCMU_CMD_RECONFIG_DEVICE, __TCMU_CMD_MAX, }; #define TCMU_CMD_MAX (__TCMU_CMD_MAX - 1) |