diff options
Diffstat (limited to 'drivers/target/iscsi/iscsi_target_device.c')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_device.c | 35 |
1 files changed, 10 insertions, 25 deletions
diff --git a/drivers/target/iscsi/iscsi_target_device.c b/drivers/target/iscsi/iscsi_target_device.c index 1b74033510a0..b565ce3b2677 100644 --- a/drivers/target/iscsi/iscsi_target_device.c +++ b/drivers/target/iscsi/iscsi_target_device.c @@ -1,34 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /******************************************************************************* * This file contains the iSCSI Virtual Device and Disk Transport * agnostic related functions. * - \u00a9 Copyright 2007-2011 RisingTide Systems LLC. - * - * Licensed to the Linux Foundation under the General Public License (GPL) version 2. + * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. ******************************************************************************/ -#include <scsi/scsi_device.h> #include <target/target_core_base.h> #include <target/target_core_fabric.h> -#include "iscsi_target_core.h" +#include <target/iscsi/iscsi_target_core.h> #include "iscsi_target_device.h" #include "iscsi_target_tpg.h" #include "iscsi_target_util.h" -void iscsit_determine_maxcmdsn(struct iscsi_session *sess) +void iscsit_determine_maxcmdsn(struct iscsit_session *sess) { struct se_node_acl *se_nacl; @@ -50,23 +39,19 @@ void iscsit_determine_maxcmdsn(struct iscsi_session *sess) * core_set_queue_depth_for_node(). */ sess->cmdsn_window = se_nacl->queue_depth; - sess->max_cmd_sn = (sess->max_cmd_sn + se_nacl->queue_depth) - 1; + atomic_add(se_nacl->queue_depth - 1, &sess->max_cmd_sn); } -void iscsit_increment_maxcmdsn(struct iscsi_cmd *cmd, struct iscsi_session *sess) +void iscsit_increment_maxcmdsn(struct iscsit_cmd *cmd, struct iscsit_session *sess) { + u32 max_cmd_sn; + if (cmd->immediate_cmd || cmd->maxcmdsn_inc) return; cmd->maxcmdsn_inc = 1; - if (!mutex_trylock(&sess->cmdsn_mutex)) { - sess->max_cmd_sn += 1; - pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn); - return; - } - sess->max_cmd_sn += 1; - pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn); - mutex_unlock(&sess->cmdsn_mutex); + max_cmd_sn = atomic_inc_return(&sess->max_cmd_sn); + pr_debug("Updated MaxCmdSN to 0x%08x\n", max_cmd_sn); } EXPORT_SYMBOL(iscsit_increment_maxcmdsn); |