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[BLUETOOTH] lockdep: annotate sk_lock nesting in AF_BLUETOOTH 

=============================================
[ INFO: possible recursive locking detected ]
2.6.18-1.2726.fc6 #1
This commit is contained in:
Peter Zijlstra 2006-11-08 22:44:35 -08:00 committed by David S. Miller
parent 67f83cbf08
commit fcc70d5fdc
3 changed files with 12 additions and 6 deletions
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8
include/net/sock.h
View File

@ -745,7 +745,13 @@ static inline int sk_stream_wmem_schedule(struct sock *sk, int size)
*/
#define sock_owned_by_user(sk) ((sk)->sk_lock.owner)
extern void FASTCALL(lock_sock(struct sock *sk));
extern void FASTCALL(lock_sock_nested(struct sock *sk, int subclass));
static inline void lock_sock(struct sock *sk)
{
lock_sock_nested(sk, 0);
}
extern void FASTCALL(release_sock(struct sock *sk));
/* BH context may only use the following locking interface. */

4
net/bluetooth/l2cap.c
View File

@ -770,7 +770,7 @@ static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int fl
long timeo;
int err = 0;
lock_sock(sk);
lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
if (sk->sk_state != BT_LISTEN) {
err = -EBADFD;
@ -792,7 +792,7 @@ static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int fl
release_sock(sk);
timeo = schedule_timeout(timeo);
lock_sock(sk);
lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
if (sk->sk_state != BT_LISTEN) {
err = -EBADFD;

6
net/core/sock.c
View File

@ -1527,7 +1527,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
atomic_set(&sk->sk_refcnt, 1);
}
void fastcall lock_sock(struct sock *sk)
void fastcall lock_sock_nested(struct sock *sk, int subclass)
{
might_sleep();
spin_lock_bh(&sk->sk_lock.slock);
@ -1538,11 +1538,11 @@ void fastcall lock_sock(struct sock *sk)
/*
* The sk_lock has mutex_lock() semantics here:
*/
mutex_acquire(&sk->sk_lock.dep_map, 0, 0, _RET_IP_);
mutex_acquire(&sk->sk_lock.dep_map, subclass, 0, _RET_IP_);
local_bh_enable();
}
EXPORT_SYMBOL(lock_sock);
EXPORT_SYMBOL(lock_sock_nested);
void fastcall release_sock(struct sock *sk)
{