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[PATCH] lockdep: annotate bh_lock_sock()

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Teach special (recursive) locking code to the lock validator.  Has no effect
on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-07-03 00:25:13 -07:00 committed by Linus Torvalds
parent a09785a241
commit c636618485
2 changed files with 4 additions and 1 deletions
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3
include/net/sock.h
View File

@ -751,6 +751,9 @@ extern void FASTCALL(release_sock(struct sock *sk));
/* BH context may only use the following locking interface. */
#define bh_lock_sock(__sk) spin_lock(&((__sk)->sk_lock.slock))
#define bh_lock_sock_nested(__sk) \
spin_lock_nested(&((__sk)->sk_lock.slock), \
SINGLE_DEPTH_NESTING)
#define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock))
extern struct sock *sk_alloc(int family,

2
net/ipv4/tcp_ipv4.c
View File

@ -1090,7 +1090,7 @@ process:
skb->dev = NULL;
bh_lock_sock(sk);
bh_lock_sock_nested(sk);
ret = 0;
if (!sock_owned_by_user(sk)) {
#ifdef CONFIG_NET_DMA