From a2890087499ae530362139aaf6c120f438e1e679 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 21 Aug 2013 18:10:04 -0700 Subject: [PATCH] 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 Cc: Hannes Reinecke Cc: Martin Petersen Cc: Chris Mason Cc: James Bottomley Cc: Nicholas Bellinger Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_sbc.c | 3 ++- 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) { -- 2.39.5