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SUNRPC: use different lock keys for INET6 and LOCAL

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xprtsock.c reclassifies sock locks based on the protocol.
However there are 3 protocols and only 2 classification keys.
The same key is used for both INET6 and LOCAL.

This causes lockdep complaints.  The complaints started since Commit
ea9afca88b ("SUNRPC: Replace use of socket sk_callback_lock with
sock_lock") which resulted in the sock locks beings used more.

So add another key, and renumber them slightly.

Fixes: ea9afca88b ("SUNRPC: Replace use of socket sk_callback_lock with sock_lock")
Fixes: 176e21ee2e ("SUNRPC: Support for RPC over AF_LOCAL transports")
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
NeilBrown 2021-11-23 09:40:35 +11:00 committed by Trond Myklebust
parent 268bb03856
commit 064a91771f
1 changed files with 5 additions and 5 deletions
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10
net/sunrpc/xprtsock.c
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@ -1720,15 +1720,15 @@ static void xs_local_set_port(struct rpc_xprt *xprt, unsigned short port)
}
#ifdef CONFIG_DEBUG_LOCK_ALLOC
static struct lock_class_key xs_key[2];
static struct lock_class_key xs_slock_key[2];
static struct lock_class_key xs_key[3];
static struct lock_class_key xs_slock_key[3];
static inline void xs_reclassify_socketu(struct socket *sock)
{
struct sock *sk = sock->sk;
sock_lock_init_class_and_name(sk, "slock-AF_LOCAL-RPC",
&xs_slock_key[1], "sk_lock-AF_LOCAL-RPC", &xs_key[1]);
&xs_slock_key[0], "sk_lock-AF_LOCAL-RPC", &xs_key[0]);
}
static inline void xs_reclassify_socket4(struct socket *sock)
@ -1736,7 +1736,7 @@ static inline void xs_reclassify_socket4(struct socket *sock)
struct sock *sk = sock->sk;
sock_lock_init_class_and_name(sk, "slock-AF_INET-RPC",
&xs_slock_key[0], "sk_lock-AF_INET-RPC", &xs_key[0]);
&xs_slock_key[1], "sk_lock-AF_INET-RPC", &xs_key[1]);
}
static inline void xs_reclassify_socket6(struct socket *sock)
@ -1744,7 +1744,7 @@ static inline void xs_reclassify_socket6(struct socket *sock)
struct sock *sk = sock->sk;
sock_lock_init_class_and_name(sk, "slock-AF_INET6-RPC",
&xs_slock_key[1], "sk_lock-AF_INET6-RPC", &xs_key[1]);
&xs_slock_key[2], "sk_lock-AF_INET6-RPC", &xs_key[2]);
}
static inline void xs_reclassify_socket(int family, struct socket *sock)