[PATCH] for_each_possible_cpu: network codes

for_each_cpu() actually iterates across all possible CPUs.  We've had mistakes
in the past where people were using for_each_cpu() where they should have been
iterating across only online or present CPUs.  This is inefficient and
possibly buggy.

We're renaming for_each_cpu() to for_each_possible_cpu() to avoid this in the
future.

This patch replaces for_each_cpu with for_each_possible_cpu under /net

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 3 insertions, 3 deletions

diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 56389c83557c..e581190fb6c3 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -146,7 +146,7 @@ static void nf_ct_event_cache_flush(void)
         struct nf_conntrack_ecache *ecache;
         int cpu;
 
-        for_each_cpu(cpu) {
+        for_each_possible_cpu(cpu) {
                 ecache = &per_cpu(nf_conntrack_ecache, cpu);
                 if (ecache->ct)
                         nf_ct_put(ecache->ct);
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index feb8a9e066b0..00cf0a4f4d92 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -413,7 +413,7 @@ struct xt_table_info *xt_alloc_table_info(unsigned int size)
 
         newinfo->size = size;
 
-        for_each_cpu(cpu) {
+        for_each_possible_cpu(cpu) {
                 if (size <= PAGE_SIZE)
                         newinfo->entries[cpu] = kmalloc_node(size,
                                                         GFP_KERNEL,
@@ -436,7 +436,7 @@ void xt_free_table_info(struct xt_table_info *info)
 {
         int cpu;
 
-        for_each_cpu(cpu) {
+        for_each_possible_cpu(cpu) {
                 if (info->size <= PAGE_SIZE)
                         kfree(info->entries[cpu]);
                 else