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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-01 17:00:56 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-02 15:36:38 -0500
commit2446ab6070861aba2dd9229463ffbc40016a9f33 (patch)
tree2e366c3236788936b9f4f58c0787ae01c265f4a4 /net/sunrpc/auth_gss/auth_gss.c
parenta3ca5651cb5eebe2e56e510bbf5cd60abc301c9f (diff)
SUNRPC: Use RCU to dereference the rpc_clnt.cl_xprt field
A migration event will replace the rpc_xprt used by an rpc_clnt. To ensure this can be done safely, all references to cl_xprt must now use a form of rcu_dereference(). Special care is taken with rpc_peeraddr2str(), which returns a pointer to memory whose lifetime is the same as the rpc_xprt. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> [ cel: fix lockdep splats and layering violations ] [ cel: forward ported to 3.4 ] [ cel: remove rpc_max_reqs(), add rpc_net_ns() ] Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/auth_gss/auth_gss.c')
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index cb2e56452748..d3ad81f8da5b 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -799,7 +799,7 @@ err_unlink_pipe_1:
static void gss_pipes_dentries_destroy_net(struct rpc_clnt *clnt,
struct rpc_auth *auth)
{
- struct net *net = clnt->cl_xprt->xprt_net;
+ struct net *net = rpc_net_ns(clnt);
struct super_block *sb;
sb = rpc_get_sb_net(net);
@@ -813,7 +813,7 @@ static void gss_pipes_dentries_destroy_net(struct rpc_clnt *clnt,
static int gss_pipes_dentries_create_net(struct rpc_clnt *clnt,
struct rpc_auth *auth)
{
- struct net *net = clnt->cl_xprt->xprt_net;
+ struct net *net = rpc_net_ns(clnt);
struct super_block *sb;
int err = 0;