From d1c26857cdec3e3bdb5cf7179411f6ce8cc0834c Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Tue, 23 May 2017 16:48:44 -0700 Subject: [PATCH] target/iscsi: Simplify iscsit_free_cmd() Since .se_tfo is only set if a command has been submitted to the LIO core, check .se_tfo instead of .iscsi_opcode. Since __iscsit_free_cmd() only affects SCSI commands but not TMFs, calling that function for TMFs does not change behavior. This patch does not change the behavior of iscsit_free_cmd(). Signed-off-by: Bart Van Assche Cc: Hannes Reinecke Cc: Christoph Hellwig Cc: Andy Grover Cc: David Disseldorp Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target_util.c | 39 +++--------------------- 1 file changed, 4 insertions(+), 35 deletions(-) diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c index 41b9e7cc08b8..1e36f83b5961 100644 --- a/drivers/target/iscsi/iscsi_target_util.c +++ b/drivers/target/iscsi/iscsi_target_util.c @@ -734,49 +734,18 @@ void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool check_queues) void iscsit_free_cmd(struct iscsi_cmd *cmd, bool shutdown) { - struct se_cmd *se_cmd = NULL; + struct se_cmd *se_cmd = cmd->se_cmd.se_tfo ? &cmd->se_cmd : NULL; int rc; - /* - * Determine if a struct se_cmd is associated with - * this struct iscsi_cmd. - */ - switch (cmd->iscsi_opcode) { - case ISCSI_OP_SCSI_CMD: - /* - * Fallthrough - */ - case ISCSI_OP_SCSI_TMFUNC: - se_cmd = &cmd->se_cmd; - __iscsit_free_cmd(cmd, shutdown); + __iscsit_free_cmd(cmd, shutdown); + if (se_cmd) { rc = transport_generic_free_cmd(se_cmd, shutdown); if (!rc && shutdown && se_cmd->se_sess) { __iscsit_free_cmd(cmd, shutdown); target_put_sess_cmd(se_cmd); } - break; - case ISCSI_OP_REJECT: - /* - * Handle special case for REJECT when iscsi_add_reject*() has - * overwritten the original iscsi_opcode assignment, and the - * associated cmd->se_cmd needs to be released. - */ - if (cmd->se_cmd.se_tfo != NULL) { - se_cmd = &cmd->se_cmd; - __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, shutdown); - target_put_sess_cmd(se_cmd); - } - break; - } - /* Fall-through */ - default: - __iscsit_free_cmd(cmd, shutdown); + } else { iscsit_release_cmd(cmd); - break; } } EXPORT_SYMBOL(iscsit_free_cmd);