target: Add SCF_ACK_KREF flag for acknowledgement kref

When TARGET_SCF_ACK_KREF is in use with target_submit_cmd() for
setting the extra acknowledgement reference to se_cmd->cmd_kref,
go ahead and set SCF_ACK_KREF in order to be used later by
abort task.

Reported-by: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 35bae7dd670a..c6b8b8233399 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -4030,8 +4030,10 @@ void target_get_sess_cmd(struct se_session *se_sess, struct se_cmd *se_cmd,
          * fabric acknowledgement that requires two target_put_sess_cmd()
          * invocations before se_cmd descriptor release.
          */
-        if (ack_kref == true)
+        if (ack_kref == true) {
                 kref_get(&se_cmd->cmd_kref);
+                se_cmd->se_cmd_flags |= SCF_ACK_KREF;
+        }
 
         spin_lock_irqsave(&se_sess->sess_cmd_lock, flags);
         list_add_tail(&se_cmd->se_cmd_list, &se_sess->sess_cmd_list);