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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-02 02:00:56 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-03 00:36:38 +0400
commit2446ab6070861aba2dd9229463ffbc40016a9f33 (patch)
tree2e366c3236788936b9f4f58c0787ae01c265f4a4 /fs/nfs/nfs4namespace.c
parenta3ca5651cb5eebe2e56e510bbf5cd60abc301c9f (diff)
downloadlinux-2446ab6070861aba2dd9229463ffbc40016a9f33.tar.xz
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 'fs/nfs/nfs4namespace.c')
-rw-r--r--fs/nfs/nfs4namespace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 667ea7406fd3..9c8eca315f43 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -96,8 +96,8 @@ static int nfs4_validate_fspath(struct dentry *dentry,
static size_t nfs_parse_server_name(char *string, size_t len,
struct sockaddr *sa, size_t salen, struct nfs_server *server)
{
+ struct net *net = rpc_net_ns(server->client);
ssize_t ret;
- struct net *net = server->client->cl_xprt->xprt_net;
ret = rpc_pton(net, string, len, sa, salen);
if (ret == 0) {