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Message-Id: <1211083816660-git-send-email-fubar@us.ibm.com>
Date: Sat, 17 May 2008 21:10:10 -0700
From: Jay Vosburgh <fubar@...ibm.com>
To: netdev@...r.kernel.org
Cc: Jeff Garzik <jgarzik@...ox.com>, Pavel Emelyanov <xemul@...nvz.org>
Subject: [PATCH 4/8] bonding: Relax unneeded _safe lists iterations.
From: Pavel Emelyanov <xemul@...nvz.org>
Many places either do not modify the list under the list_for_each_xxx,
or break out of the loop as soon as the first element is removed.
Thus, this _safe iteration just occupies some unneeded .text space
and requires an additional variable.
Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
Acked-by: Jay Vosburgh <fubar@...ibm.com>
---
drivers/net/bonding/bond_main.c | 31 ++++++++++++++-----------------
drivers/net/bonding/bond_sysfs.c | 3 +--
2 files changed, 15 insertions(+), 19 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 6b12164..5e3b942 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -261,14 +261,14 @@ static int bond_add_vlan(struct bonding *bond, unsigned short vlan_id)
*/
static int bond_del_vlan(struct bonding *bond, unsigned short vlan_id)
{
- struct vlan_entry *vlan, *next;
+ struct vlan_entry *vlan;
int res = -ENODEV;
dprintk("bond: %s, vlan id %d\n", bond->dev->name, vlan_id);
write_lock_bh(&bond->lock);
- list_for_each_entry_safe(vlan, next, &bond->vlan_list, vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
if (vlan->vlan_id == vlan_id) {
list_del(&vlan->vlan_list);
@@ -2428,7 +2428,7 @@ out:
static int bond_has_this_ip(struct bonding *bond, __be32 ip)
{
- struct vlan_entry *vlan, *vlan_next;
+ struct vlan_entry *vlan;
if (ip == bond->master_ip)
return 1;
@@ -2436,8 +2436,7 @@ static int bond_has_this_ip(struct bonding *bond, __be32 ip)
if (list_empty(&bond->vlan_list))
return 0;
- list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list,
- vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
if (ip == vlan->vlan_ip)
return 1;
}
@@ -2479,7 +2478,7 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
{
int i, vlan_id, rv;
__be32 *targets = bond->params.arp_targets;
- struct vlan_entry *vlan, *vlan_next;
+ struct vlan_entry *vlan;
struct net_device *vlan_dev;
struct flowi fl;
struct rtable *rt;
@@ -2526,8 +2525,7 @@ static void bond_arp_send_all(struct bonding *bond, struct slave *slave)
}
vlan_id = 0;
- list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list,
- vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan_dev == rt->u.dst.dev) {
vlan_id = vlan->vlan_id;
@@ -3477,13 +3475,13 @@ static int bond_inetaddr_event(struct notifier_block *this, unsigned long event,
{
struct in_ifaddr *ifa = ptr;
struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev;
- struct bonding *bond, *bond_next;
- struct vlan_entry *vlan, *vlan_next;
+ struct bonding *bond;
+ struct vlan_entry *vlan;
if (dev_net(ifa->ifa_dev->dev) != &init_net)
return NOTIFY_DONE;
- list_for_each_entry_safe(bond, bond_next, &bond_dev_list, bond_list) {
+ list_for_each_entry(bond, &bond_dev_list, bond_list) {
if (bond->dev == event_dev) {
switch (event) {
case NETDEV_UP:
@@ -3500,8 +3498,7 @@ static int bond_inetaddr_event(struct notifier_block *this, unsigned long event,
if (list_empty(&bond->vlan_list))
continue;
- list_for_each_entry_safe(vlan, vlan_next, &bond->vlan_list,
- vlan_list) {
+ list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
vlan_dev = vlan_group_get_device(bond->vlgrp, vlan->vlan_id);
if (vlan_dev == event_dev) {
switch (event) {
@@ -4851,7 +4848,7 @@ static struct lock_class_key bonding_netdev_xmit_lock_key;
int bond_create(char *name, struct bond_params *params)
{
struct net_device *bond_dev;
- struct bonding *bond, *nxt;
+ struct bonding *bond;
int res;
rtnl_lock();
@@ -4859,7 +4856,7 @@ int bond_create(char *name, struct bond_params *params)
/* Check to see if the bond already exists. */
if (name) {
- list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
+ list_for_each_entry(bond, &bond_dev_list, bond_list)
if (strnicmp(bond->dev->name, name, IFNAMSIZ) == 0) {
printk(KERN_ERR DRV_NAME
": cannot add bond %s; it already exists\n",
@@ -4931,7 +4928,7 @@ static int __init bonding_init(void)
{
int i;
int res;
- struct bonding *bond, *nxt;
+ struct bonding *bond;
printk(KERN_INFO "%s", version);
@@ -4961,7 +4958,7 @@ static int __init bonding_init(void)
goto out;
err:
- list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) {
+ list_for_each_entry(bond, &bond_dev_list, bond_list) {
bond_work_cancel_all(bond);
destroy_workqueue(bond->wq);
}
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 452a789..1f02857 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -111,7 +111,6 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t
char *ifname;
int rv, res = count;
struct bonding *bond;
- struct bonding *nxt;
sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
ifname = command + 1;
@@ -134,7 +133,7 @@ static ssize_t bonding_store_bonds(struct class *cls, const char *buffer, size_t
rtnl_lock();
down_write(&bonding_rwsem);
- list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list)
+ list_for_each_entry(bond, &bond_dev_list, bond_list)
if (strnicmp(bond->dev->name, ifname, IFNAMSIZ) == 0) {
/* check the ref count on the bond's kobject.
* If it's > expected, then there's a file open,
--
1.5.2.4
--
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