From c63661848581a9842dfc72d9a400285dd284fc47 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 3 Jul 2006 00:25:13 -0700 Subject: [PATCH] [PATCH] lockdep: annotate bh_lock_sock() Teach special (recursive) locking code to the lock validator. Has no effect on non-lockdep kernels. Signed-off-by: Ingo Molnar Signed-off-by: Arjan van de Ven Cc: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/net/sock.h | 3 +++ net/ipv4/tcp_ipv4.c | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/include/net/sock.h b/include/net/sock.h index 83805feea880..0969fb60d6ea 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -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, diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 823717285c6d..5a886e6efbbe 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -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