3748 zfs headers should be C++ compatible
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>
Reviewed by:    Matthew Ahrens <mahrens@delphix.com>

@@ -167,19 +167,19 @@
 } ddt_ops_t;
 
 #define DDT_NAMELEN     80
 
 extern void ddt_object_name(ddt_t *ddt, enum ddt_type type,
-    enum ddt_class class, char *name);
+    enum ddt_class /*class*/, char *name);
 extern int ddt_object_walk(ddt_t *ddt, enum ddt_type type,
-    enum ddt_class class, uint64_t *walk, ddt_entry_t *dde);
+    enum ddt_class /*class*/, uint64_t *walk, ddt_entry_t *dde);
 extern uint64_t ddt_object_count(ddt_t *ddt, enum ddt_type type,
-    enum ddt_class class);
+    enum ddt_class /*class*/);
 extern int ddt_object_info(ddt_t *ddt, enum ddt_type type,
-    enum ddt_class class, dmu_object_info_t *);
+    enum ddt_class /*class*/, dmu_object_info_t *);
 extern boolean_t ddt_object_exists(ddt_t *ddt, enum ddt_type type,
-    enum ddt_class class);
+    enum ddt_class /*class*/);
 
 extern void ddt_bp_fill(const ddt_phys_t *ddp, blkptr_t *bp,
     uint64_t txg);
 extern void ddt_bp_create(enum zio_checksum checksum, const ddt_key_t *ddk,
     const ddt_phys_t *ddp, blkptr_t *bp);

@@ -233,11 +233,11 @@
 extern int ddt_load(spa_t *spa);
 extern void ddt_unload(spa_t *spa);
 extern void ddt_sync(spa_t *spa, uint64_t txg);
 extern int ddt_walk(spa_t *spa, ddt_bookmark_t *ddb, ddt_entry_t *dde);
 extern int ddt_object_update(ddt_t *ddt, enum ddt_type type,
-    enum ddt_class class, ddt_entry_t *dde, dmu_tx_t *tx);
+    enum ddt_class /*class*/, ddt_entry_t *dde, dmu_tx_t *tx);
 
 extern const ddt_ops_t ddt_zap_ops;
 
 #ifdef  __cplusplus
 }