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/include/net/ax25.h b/include/net/ax25.h
index 53539ac..89ed9ac 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -161,8 +161,8 @@
ax25_address call;
} ax25_uid_assoc;
-#define ax25_uid_for_each(__ax25, node, list) \
- hlist_for_each_entry(__ax25, node, list, uid_node)
+#define ax25_uid_for_each(__ax25, list) \
+ hlist_for_each_entry(__ax25, list, uid_node)
#define ax25_uid_hold(ax25) \
atomic_inc(&((ax25)->refcount))
@@ -247,8 +247,8 @@
#define ax25_sk(__sk) ((ax25_cb *)(__sk)->sk_protinfo)
-#define ax25_for_each(__ax25, node, list) \
- hlist_for_each_entry(__ax25, node, list, ax25_node)
+#define ax25_for_each(__ax25, list) \
+ hlist_for_each_entry(__ax25, list, ax25_node)
#define ax25_cb_hold(__ax25) \
atomic_inc(&((__ax25)->refcount))
diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h
index 7b2ae9d..ef83d9e 100644
--- a/include/net/inet_hashtables.h
+++ b/include/net/inet_hashtables.h
@@ -94,8 +94,8 @@
return read_pnet(&ib->ib_net);
}
-#define inet_bind_bucket_for_each(tb, pos, head) \
- hlist_for_each_entry(tb, pos, head, node)
+#define inet_bind_bucket_for_each(tb, head) \
+ hlist_for_each_entry(tb, head, node)
struct inet_bind_hashbucket {
spinlock_t lock;
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index 7d658d5..f908dfc 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -178,11 +178,11 @@
#define inet_twsk_for_each(tw, node, head) \
hlist_nulls_for_each_entry(tw, node, head, tw_node)
-#define inet_twsk_for_each_inmate(tw, node, jail) \
- hlist_for_each_entry(tw, node, jail, tw_death_node)
+#define inet_twsk_for_each_inmate(tw, jail) \
+ hlist_for_each_entry(tw, jail, tw_death_node)
-#define inet_twsk_for_each_inmate_safe(tw, node, safe, jail) \
- hlist_for_each_entry_safe(tw, node, safe, jail, tw_death_node)
+#define inet_twsk_for_each_inmate_safe(tw, safe, jail) \
+ hlist_for_each_entry_safe(tw, safe, jail, tw_death_node)
static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk)
{
diff --git a/include/net/netrom.h b/include/net/netrom.h
index f0793c1..121dcf8 100644
--- a/include/net/netrom.h
+++ b/include/net/netrom.h
@@ -154,17 +154,17 @@
nr_node_put(nr_node);
}
-#define nr_neigh_for_each(__nr_neigh, node, list) \
- hlist_for_each_entry(__nr_neigh, node, list, neigh_node)
+#define nr_neigh_for_each(__nr_neigh, list) \
+ hlist_for_each_entry(__nr_neigh, list, neigh_node)
-#define nr_neigh_for_each_safe(__nr_neigh, node, node2, list) \
- hlist_for_each_entry_safe(__nr_neigh, node, node2, list, neigh_node)
+#define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
+ hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
-#define nr_node_for_each(__nr_node, node, list) \
- hlist_for_each_entry(__nr_node, node, list, node_node)
+#define nr_node_for_each(__nr_node, list) \
+ hlist_for_each_entry(__nr_node, list, node_node)
-#define nr_node_for_each_safe(__nr_node, node, node2, list) \
- hlist_for_each_entry_safe(__nr_node, node, node2, list, node_node)
+#define nr_node_for_each_safe(__nr_node, node2, list) \
+ hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
/*********************************************************************/
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 2761c90..f10818f 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -339,11 +339,10 @@
qdisc_class_find(const struct Qdisc_class_hash *hash, u32 id)
{
struct Qdisc_class_common *cl;
- struct hlist_node *n;
unsigned int h;
h = qdisc_class_hash(id, hash->hashmask);
- hlist_for_each_entry(cl, n, &hash->hash[h], hnode) {
+ hlist_for_each_entry(cl, &hash->hash[h], hnode) {
if (cl->classid == id)
return cl;
}
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 7fdf298..df85a0c 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -675,8 +675,8 @@
return h & (sctp_assoc_hashsize - 1);
}
-#define sctp_for_each_hentry(epb, node, head) \
- hlist_for_each_entry(epb, node, head, node)
+#define sctp_for_each_hentry(epb, head) \
+ hlist_for_each_entry(epb, head, node)
/* Is a socket of this style? */
#define sctp_style(sk, style) __sctp_style((sk), (SCTP_SOCKET_##style))
diff --git a/include/net/sock.h b/include/net/sock.h
index a66caa2..14f6e9d 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -606,24 +606,23 @@
hlist_add_head(&sk->sk_bind_node, list);
}
-#define sk_for_each(__sk, node, list) \
- hlist_for_each_entry(__sk, node, list, sk_node)
-#define sk_for_each_rcu(__sk, node, list) \
- hlist_for_each_entry_rcu(__sk, node, list, sk_node)
+#define sk_for_each(__sk, list) \
+ hlist_for_each_entry(__sk, list, sk_node)
+#define sk_for_each_rcu(__sk, list) \
+ hlist_for_each_entry_rcu(__sk, list, sk_node)
#define sk_nulls_for_each(__sk, node, list) \
hlist_nulls_for_each_entry(__sk, node, list, sk_nulls_node)
#define sk_nulls_for_each_rcu(__sk, node, list) \
hlist_nulls_for_each_entry_rcu(__sk, node, list, sk_nulls_node)
-#define sk_for_each_from(__sk, node) \
- if (__sk && ({ node = &(__sk)->sk_node; 1; })) \
- hlist_for_each_entry_from(__sk, node, sk_node)
+#define sk_for_each_from(__sk) \
+ hlist_for_each_entry_from(__sk, sk_node)
#define sk_nulls_for_each_from(__sk, node) \
if (__sk && ({ node = &(__sk)->sk_nulls_node; 1; })) \
hlist_nulls_for_each_entry_from(__sk, node, sk_nulls_node)
-#define sk_for_each_safe(__sk, node, tmp, list) \
- hlist_for_each_entry_safe(__sk, node, tmp, list, sk_node)
-#define sk_for_each_bound(__sk, node, list) \
- hlist_for_each_entry(__sk, node, list, sk_bind_node)
+#define sk_for_each_safe(__sk, tmp, list) \
+ hlist_for_each_entry_safe(__sk, tmp, list, sk_node)
+#define sk_for_each_bound(__sk, list) \
+ hlist_for_each_entry(__sk, list, sk_bind_node)
static inline struct user_namespace *sk_user_ns(struct sock *sk)
{