From: Christoph Hellwig Date: Wed, 21 Dec 2011 19:14:05 +0000 (-0500) Subject: target: remove the transport_lun_active field in struct se_cmd X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=3d26fea01d5f80e3e585d69d8d73a60e1ca563a0;p=deliverable%2Flinux.git target: remove the transport_lun_active field in struct se_cmd There is no reason to have a flag telling if a command is on the per-lun list, we can simply do a list_empty check before removing it as long as we're careful to always use list_del_init. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index edbcabbf85f7..0b25b50900e9 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -159,13 +159,8 @@ int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) dev->read_bytes += se_cmd->data_length; spin_unlock_irqrestore(&dev->stats_lock, flags); - /* - * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used - * for tracking state of struct se_cmds during LUN shutdown events. - */ spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); - atomic_set(&se_cmd->transport_lun_active, 1); spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); return 0; diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index f704123752c3..78ea638aa3b3 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -546,14 +546,8 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd) spin_unlock_irqrestore(&cmd->t_state_lock, flags); spin_lock_irqsave(&lun->lun_cmd_lock, flags); - if (atomic_read(&cmd->transport_lun_active)) { - list_del(&cmd->se_lun_node); - atomic_set(&cmd->transport_lun_active, 0); -#if 0 - pr_debug("Removed ITT: 0x%08x from LUN LIST[%d]\n" - cmd->se_tfo->get_task_tag(cmd), lun->unpacked_lun); -#endif - } + if (!list_empty(&cmd->se_lun_node)) + list_del_init(&cmd->se_lun_node); spin_unlock_irqrestore(&lun->lun_cmd_lock, flags); } @@ -4163,9 +4157,8 @@ static void __transport_clear_lun_from_sessions(struct se_lun *lun) while (!list_empty(&lun->lun_cmd_list)) { cmd = list_first_entry(&lun->lun_cmd_list, struct se_cmd, se_lun_node); - list_del(&cmd->se_lun_node); + list_del_init(&cmd->se_lun_node); - atomic_set(&cmd->transport_lun_active, 0); /* * This will notify iscsi_target_transport.c: * transport_cmd_check_stop() that a LUN shutdown is in diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 9e7a6a5451c2..5b7d5f3dd24c 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -572,7 +572,6 @@ struct se_cmd { #define CMD_T_LUN_STOP (1 << 7) #define CMD_T_LUN_FE_STOP (1 << 8) #define CMD_T_DEV_ACTIVE (1 << 9) - atomic_t transport_lun_active; spinlock_t t_state_lock; struct completion t_transport_stop_comp; struct completion transport_lun_fe_stop_comp;