libceph, ceph: always advertise all supported features

No reason to hide CephFS-specific features in the rbd case.  Recent
feature bits mix RADOS and CephFS-specific stuff together anyway.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

drivers/block/rbd.c

@@ -731,7 +731,7 @@ static struct rbd_client *rbd_client_create(struct ceph_options *ceph_opts)
 	kref_init(&rbdc->kref);
 	INIT_LIST_HEAD(&rbdc->node);
 
-	rbdc->client = ceph_create_client(ceph_opts, rbdc, 0, 0);
+	rbdc->client = ceph_create_client(ceph_opts, rbdc);
 	if (IS_ERR(rbdc->client))
 		goto out_rbdc;
 	ceph_opts = NULL; /* Now rbdc->client is responsible for ceph_opts */

fs/ceph/super.c

@@ -544,10 +544,6 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
 					struct ceph_options *opt)
 {
 	struct ceph_fs_client *fsc;
-	const u64 supported_features =
-		CEPH_FEATURE_FLOCK | CEPH_FEATURE_DIRLAYOUTHASH |
-		CEPH_FEATURE_MDSENC | CEPH_FEATURE_MDS_INLINE_DATA;
-	const u64 required_features = 0;
 	int page_count;
 	size_t size;
 	int err = -ENOMEM;
@@ -556,8 +552,7 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
 	if (!fsc)
 		return ERR_PTR(-ENOMEM);
 
-	fsc->client = ceph_create_client(opt, fsc, supported_features,
-					 required_features);
+	fsc->client = ceph_create_client(opt, fsc);
 	if (IS_ERR(fsc->client)) {
 		err = PTR_ERR(fsc->client);
 		goto fail;

include/linux/ceph/ceph_features.h

@@ -105,8 +105,10 @@ static inline u64 ceph_sanitize_features(u64 features)
  */
 #define CEPH_FEATURES_SUPPORTED_DEFAULT		\
 	(CEPH_FEATURE_NOSRCADDR |		\
+	 CEPH_FEATURE_FLOCK |			\
 	 CEPH_FEATURE_SUBSCRIBE2 |		\
 	 CEPH_FEATURE_RECONNECT_SEQ |		\
+	 CEPH_FEATURE_DIRLAYOUTHASH |		\
 	 CEPH_FEATURE_PGID64 |			\
 	 CEPH_FEATURE_PGPOOL3 |			\
 	 CEPH_FEATURE_OSDENC |			\
@@ -114,11 +116,13 @@ static inline u64 ceph_sanitize_features(u64 features)
 	 CEPH_FEATURE_MSG_AUTH |		\
 	 CEPH_FEATURE_CRUSH_TUNABLES2 |		\
 	 CEPH_FEATURE_REPLY_CREATE_INODE |	\
+	 CEPH_FEATURE_MDSENC |			\
 	 CEPH_FEATURE_OSDHASHPSPOOL |		\
 	 CEPH_FEATURE_OSD_CACHEPOOL |		\
 	 CEPH_FEATURE_CRUSH_V2 |		\
 	 CEPH_FEATURE_EXPORT_PEER |		\
 	 CEPH_FEATURE_OSDMAP_ENC |		\
+	 CEPH_FEATURE_MDS_INLINE_DATA |		\
 	 CEPH_FEATURE_CRUSH_TUNABLES3 |		\
 	 CEPH_FEATURE_OSD_PRIMARY_AFFINITY |	\
 	 CEPH_FEATURE_MSGR_KEEPALIVE2 |		\

include/linux/ceph/libceph.h

@@ -262,10 +262,7 @@ int ceph_print_client_options(struct seq_file *m, struct ceph_client *client);
 extern void ceph_destroy_options(struct ceph_options *opt);
 extern int ceph_compare_options(struct ceph_options *new_opt,
 				struct ceph_client *client);
-extern struct ceph_client *ceph_create_client(struct ceph_options *opt,
-					      void *private,
-					      u64 supported_features,
-					      u64 required_features);
+struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private);
 struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client);
 u64 ceph_client_gid(struct ceph_client *client);
 extern void ceph_destroy_client(struct ceph_client *client);

net/ceph/ceph_common.c

@@ -596,9 +596,7 @@ EXPORT_SYMBOL(ceph_client_gid);
 /*
  * create a fresh client instance
  */
-struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
-				       u64 supported_features,
-				       u64 required_features)
+struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
 {
 	struct ceph_client *client;
 	struct ceph_entity_addr *myaddr = NULL;
@@ -615,14 +613,12 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private,
 	init_waitqueue_head(&client->auth_wq);
 	client->auth_err = 0;
 
-	if (!ceph_test_opt(client, NOMSGAUTH))
-		required_features |= CEPH_FEATURE_MSG_AUTH;
-
 	client->extra_mon_dispatch = NULL;
-	client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT |
-		supported_features;
-	client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT |
-		required_features;
+	client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT;
+	client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT;
+
+	if (!ceph_test_opt(client, NOMSGAUTH))
+		client->required_features |= CEPH_FEATURE_MSG_AUTH;
 
 	/* msgr */
 	if (ceph_test_opt(client, MYIP))