From 4412a67131a037fa1d032bcd50270e9d336a775d Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 23 May 2017 16:48:43 -0700 Subject: [PATCH] target/iscsi: Remove second argument of __iscsit_free_cmd() Initialize .data_direction to DMA_NONE in iscsit_allocate_cmd() such that the second argument of __iscsit_free_cmd() can be left out. Note: this patch causes the first part of __iscsit_free_cmd() no longer to be skipped for TMFs. That's fine since no data segments are associated with TMFs. Signed-off-by: Bart Van Assche Reviewed-by: Hannes Reinecke Cc: Christoph Hellwig Cc: Andy Grover Cc: David Disseldorp Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target.c | 4 +--- drivers/target/iscsi/iscsi_target_util.c | 29 +++++++++++------------- drivers/target/iscsi/iscsi_target_util.h | 2 +- 3 files changed, 15 insertions(+), 20 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 3fdca2cdd8da..735d4ff2d0ce 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -488,15 +488,13 @@ EXPORT_SYMBOL(iscsit_queue_rsp); void iscsit_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd) { - bool scsi_cmd = (cmd->iscsi_opcode == ISCSI_OP_SCSI_CMD); - spin_lock_bh(&conn->cmd_lock); if (!list_empty(&cmd->i_conn_node) && !(cmd->se_cmd.transport_state & CMD_T_FABRIC_STOP)) list_del_init(&cmd->i_conn_node); spin_unlock_bh(&conn->cmd_lock); - __iscsit_free_cmd(cmd, scsi_cmd, true); + __iscsit_free_cmd(cmd, true); } EXPORT_SYMBOL(iscsit_aborted_task); diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 7d3e2fcc26a0..41b9e7cc08b8 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -167,6 +167,7 @@ struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, int state) cmd->se_cmd.map_tag = tag; cmd->conn = conn; + cmd->data_direction = DMA_NONE; INIT_LIST_HEAD(&cmd->i_conn_node); INIT_LIST_HEAD(&cmd->datain_list); INIT_LIST_HEAD(&cmd->cmd_r2t_list); @@ -711,19 +712,16 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd) } EXPORT_SYMBOL(iscsit_release_cmd); -void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd, - bool check_queues) +void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool check_queues) { struct iscsi_conn *conn = cmd->conn; - if (scsi_cmd) { - if (cmd->data_direction == DMA_TO_DEVICE) { - iscsit_stop_dataout_timer(cmd); - iscsit_free_r2ts_from_list(cmd); - } - if (cmd->data_direction == DMA_FROM_DEVICE) - iscsit_free_all_datain_reqs(cmd); + if (cmd->data_direction == DMA_TO_DEVICE) { + iscsit_stop_dataout_timer(cmd); + iscsit_free_r2ts_from_list(cmd); } + if (cmd->data_direction == DMA_FROM_DEVICE) + iscsit_free_all_datain_reqs(cmd); if (conn && check_queues) { iscsit_remove_cmd_from_immediate_queue(cmd, conn); @@ -738,23 +736,22 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) { struct se_cmd *se_cmd = NULL; int rc; - bool op_scsi = false; + /* * Determine if a struct se_cmd is associated with * this struct iscsi_cmd. */ switch (cmd->iscsi_opcode) { case ISCSI_OP_SCSI_CMD: - op_scsi = true; /* * Fallthrough */ case ISCSI_OP_SCSI_TMFUNC: se_cmd = &cmd->se_cmd; - __iscsit_free_cmd(cmd, op_scsi, shutdown); + __iscsit_free_cmd(cmd, shutdown); rc = transport_generic_free_cmd(se_cmd, shutdown); if (!rc && shutdown && se_cmd->se_sess) { - __iscsit_free_cmd(cmd, op_scsi, shutdown); + __iscsit_free_cmd(cmd, shutdown); target_put_sess_cmd(se_cmd); } break; @@ -766,18 +763,18 @@ void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) */ if (cmd->se_cmd.se_tfo != NULL) { se_cmd = &cmd->se_cmd; - __iscsit_free_cmd(cmd, true, shutdown); + __iscsit_free_cmd(cmd, shutdown); rc = transport_generic_free_cmd(&cmd->se_cmd, shutdown); if (!rc && shutdown && se_cmd->se_sess) { - __iscsit_free_cmd(cmd, true, shutdown); + __iscsit_free_cmd(cmd, shutdown); target_put_sess_cmd(se_cmd); } break; } /* Fall-through */ default: - __iscsit_free_cmd(cmd, false, shutdown); + __iscsit_free_cmd(cmd, shutdown); iscsit_release_cmd(cmd); break; } diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h index 9e4197af8708..425160565d0c 100644 --- a/drivers/target/iscsi/iscsi_target_util.h +++ b/drivers/target/iscsi/iscsi_target_util.h @@ -37,7 +37,7 @@ extern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_co extern bool iscsit_conn_all_queues_empty(struct iscsi_conn *); extern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *); extern void iscsit_release_cmd(struct iscsi_cmd *); -extern void __iscsit_free_cmd(struct iscsi_cmd *, bool, bool); +extern void __iscsit_free_cmd(struct iscsi_cmd *, bool); extern void iscsit_free_cmd(struct iscsi_cmd *, bool); extern int iscsit_check_session_usage_count(struct iscsi_session *); extern void iscsit_dec_session_usage_count(struct iscsi_session *);