From: Nicholas Bellinger <n...@daterainc.com>
This patch changes target_complete_ok_work() to fall through
after calling the se_cmd->transport_complete_callback() ->
compare_and_write_post() callback, by keying off the existance
of SCF_COMPARE_AND_WRITE_POST.
This is necessary because once SCF_COMPARE_AND_WRITE_POST has
been set by compare_and_write_post(), the SCSI response needs
to be sent via TFO->queue_status().
Cc: Christoph Hellwig <h...@lst.de>
Cc: Hannes Reinecke <h...@suse.de>
Cc: Martin Petersen <martin.peter...@oracle.com>
Cc: Chris Mason <chris.ma...@fusionio.com>
Cc: James Bottomley <jbottom...@parallels.com>
Cc: Nicholas Bellinger <n...@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <n...@daterainc.com>
---
drivers/target/target_core_sbc.c | 3 ++-
drivers/target/target_core_transport.c | 21 +++++++++++----------
2 files changed, 13 insertions(+), 11 deletions(-)
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 4076828..bb1b42b 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -375,7 +375,8 @@ static sense_reason_t compare_and_write_callback(struct
se_cmd *cmd)
buf = kzalloc(cmd->data_length, GFP_KERNEL);
if (!buf) {
pr_err("Unable to allocate compare_and_write buf\n");
- return TCM_OUT_OF_RESOURCES;
+ ret = TCM_OUT_OF_RESOURCES;
+ goto out;
}
write_sg = kzalloc(sizeof(struct scatterlist) * cmd->t_data_nents,
diff --git a/drivers/target/target_core_transport.c
b/drivers/target/target_core_transport.c
index dc39f1f..a95e799 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1910,17 +1910,18 @@ static void target_complete_ok_work(struct work_struct
*work)
sense_reason_t rc;
rc = cmd->transport_complete_callback(cmd);
- if (!rc)
+ if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST)) {
return;
+ } else if (rc) {
+ ret = transport_send_check_condition_and_sense(cmd,
+ rc, 0);
+ if (ret == -EAGAIN || ret == -ENOMEM)
+ goto queue_full;
- ret = transport_send_check_condition_and_sense(cmd,
- rc, 0);
- if (ret == -EAGAIN || ret == -ENOMEM)
- goto queue_full;
-
- transport_lun_remove_cmd(cmd);
- transport_cmd_check_stop_to_fabric(cmd);
- return;
+ transport_lun_remove_cmd(cmd);
+ transport_cmd_check_stop_to_fabric(cmd);
+ return;
+ }
}
switch (cmd->data_direction) {
--
1.7.2.5
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