From: Mike Christie <michaelc@xxxxxxxxxxx>
rbd works with block_devices/request_queues. This patch
adds a helper so we can easily go from the iblock device
to the request queue in the rbd_tcm module.
Signed-off-by: Mike Christie <michaelc@xxxxxxxxxxx>
---
drivers/target/target_core_iblock.c | 6 ++++++
include/target/target_core_backend.h | 4 ++++
2 files changed, 10 insertions(+)
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index d4a4b0f..ab84153 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -53,6 +53,12 @@ static inline struct iblock_dev *IBLOCK_DEV(struct se_device *dev)
return container_of(dev, struct iblock_dev, dev);
}
+struct request_queue *ibock_se_device_to_q(struct se_device *dev)
+{
+ struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
+ return bdev_get_queue(ib_dev->ibd_bd);
+}
+EXPORT_SYMBOL(ibock_se_device_to_q);
static struct se_subsystem_api iblock_template;
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index d61be72..1571e68 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -139,4 +139,8 @@ int se_dev_set_max_sectors(struct se_device *, u32);
int se_dev_set_optimal_sectors(struct se_device *, u32);
int se_dev_set_block_size(struct se_device *, u32);
+/* backend helper to map from se_device to its queue */
+struct request_queue;
+struct request_queue *ibock_se_device_to_q(struct se_device *dev);
+
#endif /* TARGET_CORE_BACKEND_H */
--
1.8.3.1
--
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