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| author | Nicholas Bellinger <nab@daterainc.com> | 2013-08-21 18:10:04 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-09-10 16:45:13 -0700 |
| commit | a2890087499ae530362139aaf6c120f438e1e679 (patch) | |
| tree | 3d43243c62a0efdbd6e42f44d723848953e400c7 /drivers/target | |
| parent | 68ff9b9b27525cdaaea81890456f65aed5ce0b70 (diff) | |
| download | lwn-a2890087499ae530362139aaf6c120f438e1e679.tar.gz lwn-a2890087499ae530362139aaf6c120f438e1e679.zip | |
target: Add compare_and_write_post() completion callback fall through
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 <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Martin Petersen <martin.petersen@oracle.com>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_sbc.c | 3 | ||||
| -rw-r--r-- | drivers/target/target_core_transport.c | 19 |
2 files changed, 12 insertions, 10 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index dfb6603eab4d..5c822fdc8f6f 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 672cb37a43c5..e53c59ba745a 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1909,17 +1909,18 @@ 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) { |