hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 2e3d942..f23916b 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -842,7 +842,9 @@
--*l;
}
- hlist_for_each_entry_from(tmp, e, next) {
+ tmp = container_of(e, struct lec_arp_table, next);
+
+ hlist_for_each_entry_from(tmp, next) {
if (--*l < 0)
break;
}
@@ -1307,7 +1309,6 @@
static int
lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove)
{
- struct hlist_node *node;
struct lec_arp_table *entry;
int i, remove_vcc = 1;
@@ -1326,7 +1327,7 @@
* ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
*/
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry(entry, node,
+ hlist_for_each_entry(entry,
&priv->lec_arp_tables[i], next) {
if (memcmp(to_remove->atm_addr,
entry->atm_addr, ATM_ESA_LEN) == 0) {
@@ -1364,14 +1365,13 @@
static void dump_arp_table(struct lec_priv *priv)
{
- struct hlist_node *node;
struct lec_arp_table *rulla;
char buf[256];
int i, j, offset;
pr_info("Dump %p:\n", priv);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry(rulla, node,
+ hlist_for_each_entry(rulla,
&priv->lec_arp_tables[i], next) {
offset = 0;
offset += sprintf(buf, "%d: %p\n", i, rulla);
@@ -1403,7 +1403,7 @@
if (!hlist_empty(&priv->lec_no_forward))
pr_info("No forward\n");
- hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) {
+ hlist_for_each_entry(rulla, &priv->lec_no_forward, next) {
offset = 0;
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr);
offset += sprintf(buf + offset, " Atm:");
@@ -1428,7 +1428,7 @@
if (!hlist_empty(&priv->lec_arp_empty_ones))
pr_info("Empty ones\n");
- hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) {
+ hlist_for_each_entry(rulla, &priv->lec_arp_empty_ones, next) {
offset = 0;
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr);
offset += sprintf(buf + offset, " Atm:");
@@ -1453,7 +1453,7 @@
if (!hlist_empty(&priv->mcast_fwds))
pr_info("Multicast Forward VCCs\n");
- hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) {
+ hlist_for_each_entry(rulla, &priv->mcast_fwds, next) {
offset = 0;
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr);
offset += sprintf(buf + offset, " Atm:");
@@ -1487,7 +1487,7 @@
static void lec_arp_destroy(struct lec_priv *priv)
{
unsigned long flags;
- struct hlist_node *node, *next;
+ struct hlist_node *next;
struct lec_arp_table *entry;
int i;
@@ -1499,7 +1499,7 @@
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_tables[i], next) {
lec_arp_remove(priv, entry);
lec_arp_put(entry);
@@ -1507,7 +1507,7 @@
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
}
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_empty_ones, next) {
del_timer_sync(&entry->timer);
lec_arp_clear_vccs(entry);
@@ -1516,7 +1516,7 @@
}
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_no_forward, next) {
del_timer_sync(&entry->timer);
lec_arp_clear_vccs(entry);
@@ -1525,7 +1525,7 @@
}
INIT_HLIST_HEAD(&priv->lec_no_forward);
- hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
+ hlist_for_each_entry_safe(entry, next, &priv->mcast_fwds, next) {
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */
lec_arp_clear_vccs(entry);
hlist_del(&entry->next);
@@ -1542,14 +1542,13 @@
static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
const unsigned char *mac_addr)
{
- struct hlist_node *node;
struct hlist_head *head;
struct lec_arp_table *entry;
pr_debug("%pM\n", mac_addr);
head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])];
- hlist_for_each_entry(entry, node, head, next) {
+ hlist_for_each_entry(entry, head, next) {
if (ether_addr_equal(mac_addr, entry->mac_addr))
return entry;
}
@@ -1686,7 +1685,7 @@
unsigned long flags;
struct lec_priv *priv =
container_of(work, struct lec_priv, lec_arp_work.work);
- struct hlist_node *node, *next;
+ struct hlist_node *next;
struct lec_arp_table *entry;
unsigned long now;
int i;
@@ -1696,7 +1695,7 @@
restart:
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_tables[i], next) {
if (__lec_arp_check_expire(entry, now, priv)) {
struct sk_buff *skb;
@@ -1823,14 +1822,14 @@
unsigned long permanent)
{
unsigned long flags;
- struct hlist_node *node, *next;
+ struct hlist_node *next;
struct lec_arp_table *entry;
int i;
pr_debug("\n");
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_tables[i], next) {
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) &&
(permanent ||
@@ -1855,7 +1854,7 @@
unsigned int targetless_le_arp)
{
unsigned long flags;
- struct hlist_node *node, *next;
+ struct hlist_node *next;
struct lec_arp_table *entry, *tmp;
int i;
@@ -1870,7 +1869,7 @@
* we have no entry in the cache. 7.1.30
*/
if (!hlist_empty(&priv->lec_arp_empty_ones)) {
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_empty_ones, next) {
if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) {
hlist_del(&entry->next);
@@ -1915,7 +1914,7 @@
memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
del_timer(&entry->timer);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry(tmp, node,
+ hlist_for_each_entry(tmp,
&priv->lec_arp_tables[i], next) {
if (entry != tmp &&
!memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) {
@@ -1956,7 +1955,6 @@
void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb))
{
unsigned long flags;
- struct hlist_node *node;
struct lec_arp_table *entry;
int i, found_entry = 0;
@@ -2026,7 +2024,7 @@
ioc_data->atm_addr[16], ioc_data->atm_addr[17],
ioc_data->atm_addr[18], ioc_data->atm_addr[19]);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry(entry, node,
+ hlist_for_each_entry(entry,
&priv->lec_arp_tables[i], next) {
if (memcmp
(ioc_data->atm_addr, entry->atm_addr,
@@ -2103,7 +2101,6 @@
static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
{
unsigned long flags;
- struct hlist_node *node;
struct lec_arp_table *entry;
int i;
@@ -2111,7 +2108,7 @@
restart:
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry(entry, node,
+ hlist_for_each_entry(entry,
&priv->lec_arp_tables[i], next) {
if (entry->flush_tran_id == tran_id &&
entry->status == ESI_FLUSH_PENDING) {
@@ -2140,13 +2137,12 @@
const unsigned char *atm_addr, unsigned long tran_id)
{
unsigned long flags;
- struct hlist_node *node;
struct lec_arp_table *entry;
int i;
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
- hlist_for_each_entry(entry, node,
+ hlist_for_each_entry(entry,
&priv->lec_arp_tables[i], next) {
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
entry->flush_tran_id = tran_id;
@@ -2198,7 +2194,7 @@
static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
{
unsigned long flags;
- struct hlist_node *node, *next;
+ struct hlist_node *next;
struct lec_arp_table *entry;
int i;
@@ -2208,7 +2204,7 @@
spin_lock_irqsave(&priv->lec_arp_lock, flags);
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_tables[i], next) {
if (vcc == entry->vcc) {
lec_arp_remove(priv, entry);
@@ -2219,7 +2215,7 @@
}
}
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_empty_ones, next) {
if (entry->vcc == vcc) {
lec_arp_clear_vccs(entry);
@@ -2229,7 +2225,7 @@
}
}
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_no_forward, next) {
if (entry->recv_vcc == vcc) {
lec_arp_clear_vccs(entry);
@@ -2239,7 +2235,7 @@
}
}
- hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
+ hlist_for_each_entry_safe(entry, next, &priv->mcast_fwds, next) {
if (entry->recv_vcc == vcc) {
lec_arp_clear_vccs(entry);
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */
@@ -2257,13 +2253,13 @@
struct atm_vcc *vcc, struct sk_buff *skb)
{
unsigned long flags;
- struct hlist_node *node, *next;
+ struct hlist_node *next;
struct lec_arp_table *entry, *tmp;
struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
unsigned char *src = hdr->h_source;
spin_lock_irqsave(&priv->lec_arp_lock, flags);
- hlist_for_each_entry_safe(entry, node, next,
+ hlist_for_each_entry_safe(entry, next,
&priv->lec_arp_empty_ones, next) {
if (vcc == entry->vcc) {
del_timer(&entry->timer);
