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SUNRPC: Add correct rcu_dereference annotation in rpc_clnt_set_transport

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rpc_clnt_set_transport should use rcu_derefence_protected(), as it is
only safe to be called with the rpc_clnt::cl_lock held.

Cc: Chuck Lever <Chuck.Lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-10-28 16:42:44 -04:00
parent 4d4b69dd84
commit 34751b9d04
1 changed files with 2 additions and 1 deletions
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3
net/sunrpc/clnt.c
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@ -272,7 +272,8 @@ static struct rpc_xprt *rpc_clnt_set_transport(struct rpc_clnt *clnt,
struct rpc_xprt *old; struct rpc_xprt *old;
spin_lock(&clnt->cl_lock); spin_lock(&clnt->cl_lock);
old = clnt->cl_xprt; old = rcu_dereference_protected(clnt->cl_xprt,
lockdep_is_held(&clnt->cl_lock));
if (!xprt_bound(xprt)) if (!xprt_bound(xprt))
clnt->cl_autobind = 1; clnt->cl_autobind = 1;