[linux-cifs-client] [PATCH 1/4] cifs: no need to use rcu_assign_pointer on immutable keys

[Jeff Layton]

Neither keytype in use by CIFS has an "update" method. This means that
the keys are immutable once instantiated. We don't need to use RCU
to set the payload data pointers.

Signed-off-by: Jeff Layton <jlayton at redhat.com>
---
 fs/cifs/cifs_spnego.c |    2 +-
 fs/cifs/dns_resolve.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 3fd3a9d..67bf93a 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -41,7 +41,7 @@ cifs_spnego_key_instantiate(struct key *key, const void *data, size_t datalen)
 
 	/* attach the data */
 	memcpy(payload, data, datalen);
-	rcu_assign_pointer(key->payload.data, payload);
+	key->payload.data = payload;
 	ret = 0;
 
 error:
diff --git a/fs/cifs/dns_resolve.c b/fs/cifs/dns_resolve.c
index 1e0c1bd..df4a306 100644
--- a/fs/cifs/dns_resolve.c
+++ b/fs/cifs/dns_resolve.c
@@ -78,7 +78,7 @@ dns_resolver_instantiate(struct key *key, const void *data,
 	}
 
 	key->type_data.x[0] = datalen;
-	rcu_assign_pointer(key->payload.data, ip);
+	key->payload.data = ip;
 
 	return rc;
 }
-- 
1.5.5.6