[PATCH 3.10 83/85] iscsi/iser-target: Use list_del_init for ->i_conn_node

Greg Kroah-Hartman
2014-03-21T00:22:51Z

From: Nicholas Bellinger <nab@linux-iscsi.org>

commit 5159d763f60af693a3fcec45dce2021f66e528a4 upstream.

There are a handful of uses of list_empty() for cmd->i_conn_node
within iser-target code that expect to return false once a cmd
has been removed from the per connect list.

This patch changes all uses of list_del -> list_del_init in order
to ensure that list_empty() returns false as expected.

Acked-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: <stable@vger.kernel.org> #3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/infiniband/ulp/isert/ib_isert.c | 6 +++---
drivers/target/iscsi/iscsi_target.c | 4 ++--
drivers/target/iscsi/iscsi_target_erl2.c | 16 ++++++++--------
3 files changed, 13 insertions(+), 13 deletions(-)

--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -1213,7 +1213,7 @@ isert_put_cmd(struct isert_cmd *isert_cm
case ISCSI_OP_SCSI_CMD:
spin_lock_bh(&conn->cmd_lock);
if (!list_empty(&cmd->i_conn_node))
- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);

if (cmd->data_direction == DMA_TO_DEVICE)
@@ -1225,7 +1225,7 @@ isert_put_cmd(struct isert_cmd *isert_cm
case ISCSI_OP_SCSI_TMFUNC:
spin_lock_bh(&conn->cmd_lock);
if (!list_empty(&cmd->i_conn_node))
- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);

transport_generic_free_cmd(&cmd->se_cmd, 0);
@@ -1234,7 +1234,7 @@ isert_put_cmd(struct isert_cmd *isert_cm
case ISCSI_OP_NOOP_OUT:
spin_lock_bh(&conn->cmd_lock);
if (!list_empty(&cmd->i_conn_node))
- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);

/*
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -3653,7 +3653,7 @@ iscsit_immediate_queue(struct iscsi_conn
break;
case ISTATE_REMOVE:
spin_lock_bh(&conn->cmd_lock);
- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);

iscsit_free_cmd(cmd, false);
@@ -4099,7 +4099,7 @@ static void iscsit_release_commands_from
spin_lock_bh(&conn->cmd_lock);
list_for_each_entry_safe(cmd, cmd_tmp, &conn->conn_cmd_list, i_conn_node) {

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);

iscsit_increment_maxcmdsn(cmd, sess);
--- a/drivers/target/iscsi/iscsi_target_erl2.c
+++ b/drivers/target/iscsi/iscsi_target_erl2.c
@@ -140,7 +140,7 @@ void iscsit_free_connection_recovery_ent
list_for_each_entry_safe(cmd, cmd_tmp,
&cr->conn_recovery_cmd_list, i_conn_node) {

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
cmd->conn = NULL;
spin_unlock(&cr->conn_recovery_cmd_lock);
iscsit_free_cmd(cmd, true);
@@ -162,7 +162,7 @@ void iscsit_free_connection_recovery_ent
list_for_each_entry_safe(cmd, cmd_tmp,
&cr->conn_recovery_cmd_list, i_conn_node) {

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
cmd->conn = NULL;
spin_unlock(&cr->conn_recovery_cmd_lock);
iscsit_free_cmd(cmd, true);
@@ -218,7 +218,7 @@ int iscsit_remove_cmd_from_connection_re
}
cr = cmd->cr;

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
return --cr->cmd_count;
}

@@ -299,7 +299,7 @@ int iscsit_discard_unacknowledged_ooo_cm
if (!(cmd->cmd_flags & ICF_OOO_CMDSN))
continue;

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);

spin_unlock_bh(&conn->cmd_lock);
iscsit_free_cmd(cmd, true);
@@ -337,7 +337,7 @@ int iscsit_prepare_cmds_for_realligance(
/*
* Only perform connection recovery on ISCSI_OP_SCSI_CMD or
* ISCSI_OP_NOOP_OUT opcodes. For all other opcodes call
- * list_del(&cmd->i_conn_node); to release the command to the
+ * list_del_init(&cmd->i_conn_node); to release the command to the
* session pool and remove it from the connection's list.
*
* Also stop the DataOUT timer, which will be restarted after
@@ -353,7 +353,7 @@ int iscsit_prepare_cmds_for_realligance(
" CID: %hu\n", cmd->iscsi_opcode,
cmd->init_task_tag, cmd->cmd_sn, conn->cid);

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);
iscsit_free_cmd(cmd, true);
spin_lock_bh(&conn->cmd_lock);
@@ -373,7 +373,7 @@ int iscsit_prepare_cmds_for_realligance(
*/
if (!(cmd->cmd_flags & ICF_OOO_CMDSN) && !cmd->immediate_cmd &&
iscsi_sna_gte(cmd->cmd_sn, conn->sess->exp_cmd_sn)) {
- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);
iscsit_free_cmd(cmd, true);
spin_lock_bh(&conn->cmd_lock);
@@ -395,7 +395,7 @@ int iscsit_prepare_cmds_for_realligance(

cmd->sess = conn->sess;

- list_del(&cmd->i_conn_node);
+ list_del_init(&cmd->i_conn_node);
spin_unlock_bh(&conn->cmd_lock);

iscsit_free_all_datain_reqs(cmd);