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llc: convert llc_sap_list to RCU

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Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Octavian Purdila
2009-12-26 11:51:06 +00:00
committed by David S. Miller
parent 52d58aef5e
commit 8beb9ab6c2
3 changed files with 19 additions and 40 deletions
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11
net/llc/llc_proc.c
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@@ -32,14 +32,11 @@ static void llc_ui_format_mac(struct seq_file *seq, u8 *addr)
static struct sock *llc_get_sk_idx(loff_t pos)
{
struct list_head *sap_entry;
struct llc_sap *sap;
struct sock *sk = NULL;
int i;
list_for_each(sap_entry, &llc_sap_list) {
sap = list_entry(sap_entry, struct llc_sap, node);
list_for_each_entry_rcu(sap, &llc_sap_list, node) {
spin_lock_bh(&sap->sk_lock);
for (i = 0; i < LLC_SK_LADDR_HASH_ENTRIES; i++) {
struct hlist_nulls_head *head = &sap->sk_laddr_hash[i];
@@ -62,7 +59,7 @@ static void *llc_seq_start(struct seq_file *seq, loff_t *pos)
{
loff_t l = *pos;
read_lock_bh(&llc_sap_list_lock);
rcu_read_lock_bh();
return l ? llc_get_sk_idx(--l) : SEQ_START_TOKEN;
}
@@ -102,7 +99,7 @@ static void *llc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
if (sk)
goto out;
spin_unlock_bh(&sap->sk_lock);
list_for_each_entry_continue(sap, &llc_sap_list, node) {
list_for_each_entry_continue_rcu(sap, &llc_sap_list, node) {
spin_lock_bh(&sap->sk_lock);
sk = laddr_hash_next(sap, -1);
if (sk)
@@ -122,7 +119,7 @@ static void llc_seq_stop(struct seq_file *seq, void *v)
spin_unlock_bh(&sap->sk_lock);
}
read_unlock_bh(&llc_sap_list_lock);
rcu_read_unlock_bh();
}
static int llc_seq_socket_show(struct seq_file *seq, void *v)