libceph: wrap auth methods in a mutex
The auth code is called from a variety of contexts, include the mon_client
(protected by the monc's mutex) and the messenger callbacks (currently
protected by nothing). Avoid chaos by protecting all auth state with a
mutex. Nothing is blocking, so this should be simple and lightweight.
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
diff --git a/include/linux/ceph/auth.h b/include/linux/ceph/auth.h
index c9c3b3a..5f33868 100644
--- a/include/linux/ceph/auth.h
+++ b/include/linux/ceph/auth.h
@@ -78,6 +78,8 @@
u64 global_id; /* our unique id in system */
const struct ceph_crypto_key *key; /* our secret key */
unsigned want_keys; /* which services we want */
+
+ struct mutex mutex;
};
extern struct ceph_auth_client *ceph_auth_init(const char *name,