This patch would enable the passthrough Persist Reservation
clear operation routine for TCMU devices.
If dev->passthrough_pr is 1, both dev->transport->pr_ops
and dev->transport->pr_ops->pr_clear are not NULL,
core_scsi3_emulate_pro_clear() will call
dev->transport->pr_ops->pr_clear to passthrough PR clear
request to user space
Signed-off-by: Zhu Lingshan <lszhu@xxxxxxxx>
---
drivers/target/target_core_pr.c | 5 +++++
drivers/target/target_core_user.c | 1 +
2 files changed, 6 insertions(+)
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index c668dfb84bf1..66bb52ab0209 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -2719,6 +2719,11 @@ core_scsi3_emulate_pro_clear(struct se_cmd *cmd, u64 res_key)
struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
u64 pr_res_mapped_lun = 0;
int calling_it_nexus = 0;
+
+ if (dev->transport->pr_ops && dev->transport->pr_ops->pr_read_keys
+ && dev->passthrough_pr)
+ return dev->transport->pr_ops->pr_clear(cmd, res_key);
+
/*
* Locate the existing *pr_reg via struct se_node_acl pointers
*/
diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index c8d0ea330984..c417021f7099 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -4115,6 +4115,7 @@ static struct target_pr_ops tcmu_pr_ops = {
.pr_register = tcmu_execute_pr_register,
.pr_reserve = tcmu_execute_pr_reserve,
.pr_release = tcmu_execute_pr_release,
+ .pr_clear = tcmu_execute_pr_clear,
};
static struct target_backend_ops tcmu_ops = {
--
2.17.1
