diff options
author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-02-07 12:19:16 -0800 |
---|---|---|
committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2017-02-09 00:39:15 -0800 |
commit | 6b6427b6fd90ba1ff13e540bf7276f30a3e6f74f (patch) | |
tree | 092a1a96e34ff0addaccd854c8af302568b730df /drivers/target | |
parent | b1a2ecdad72e0a4f0ebdbaff580b5330ebcf68c3 (diff) |
target: Move session check from target_put_sess_cmd() into target_release_cmd_kref()
This patch does not change any functionality.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r-- | drivers/target/target_core_transport.c | 39 |
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 6f66a2d890b8..e949db12c4d8 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2592,39 +2592,38 @@ static void target_release_cmd_kref(struct kref *kref) unsigned long flags; bool fabric_stop; - spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); + if (se_sess) { + spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); - spin_lock(&se_cmd->t_state_lock); - fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP) && - (se_cmd->transport_state & CMD_T_ABORTED); - spin_unlock(&se_cmd->t_state_lock); + spin_lock(&se_cmd->t_state_lock); + fabric_stop = (se_cmd->transport_state & CMD_T_FABRIC_STOP) && + (se_cmd->transport_state & CMD_T_ABORTED); + spin_unlock(&se_cmd->t_state_lock); - if (se_cmd->cmd_wait_set || fabric_stop) { + if (se_cmd->cmd_wait_set || fabric_stop) { + list_del_init(&se_cmd->se_cmd_list); + spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + target_free_cmd_mem(se_cmd); + complete(&se_cmd->cmd_wait_comp); + return; + } list_del_init(&se_cmd->se_cmd_list); spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); - target_free_cmd_mem(se_cmd); - complete(&se_cmd->cmd_wait_comp); - return; } - list_del_init(&se_cmd->se_cmd_list); - spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); target_free_cmd_mem(se_cmd); se_cmd->se_tfo->release_cmd(se_cmd); } -/* target_put_sess_cmd - Check for active I/O shutdown via kref_put - * @se_cmd: command descriptor to drop +/** + * target_put_sess_cmd - decrease the command reference count + * @se_cmd: command to drop a reference from + * + * Returns 1 if and only if this target_put_sess_cmd() call caused the + * refcount to drop to zero. Returns zero otherwise. */ int target_put_sess_cmd(struct se_cmd *se_cmd) { - struct se_session *se_sess = se_cmd->se_sess; - - if (!se_sess) { - target_free_cmd_mem(se_cmd); - se_cmd->se_tfo->release_cmd(se_cmd); - return 1; - } return kref_put(&se_cmd->cmd_kref, target_release_cmd_kref); } EXPORT_SYMBOL(target_put_sess_cmd); |