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>

@@ -176,17 +176,17 @@
         ddt_ops[type]->ddt_op_prefetch(ddt->ddt_os,
             ddt->ddt_object[type][class], dde);
 }
 
 int
-ddt_object_update(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
+ddt_object_update(ddt_t *ddt, enum ddt_type type, enum ddt_class ddt_class,
     ddt_entry_t *dde, dmu_tx_t *tx)
 {
-        ASSERT(ddt_object_exists(ddt, type, class));
+        ASSERT(ddt_object_exists(ddt, type, ddt_class));
 
         return (ddt_ops[type]->ddt_op_update(ddt->ddt_os,
-            ddt->ddt_object[type][class], dde, tx));
+            ddt->ddt_object[type][ddt_class], dde, tx));
 }
 
 static int
 ddt_object_remove(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
     ddt_entry_t *dde, dmu_tx_t *tx)

@@ -196,52 +196,52 @@
         return (ddt_ops[type]->ddt_op_remove(ddt->ddt_os,
             ddt->ddt_object[type][class], dde, tx));
 }
 
 int
-ddt_object_walk(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
+ddt_object_walk(ddt_t *ddt, enum ddt_type type, enum ddt_class ddt_class,
     uint64_t *walk, ddt_entry_t *dde)
 {
-        ASSERT(ddt_object_exists(ddt, type, class));
+        ASSERT(ddt_object_exists(ddt, type, ddt_class));
 
         return (ddt_ops[type]->ddt_op_walk(ddt->ddt_os,
-            ddt->ddt_object[type][class], dde, walk));
+            ddt->ddt_object[type][ddt_class], dde, walk));
 }
 
 uint64_t
-ddt_object_count(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
+ddt_object_count(ddt_t *ddt, enum ddt_type type, enum ddt_class ddt_class)
 {
-        ASSERT(ddt_object_exists(ddt, type, class));
+        ASSERT(ddt_object_exists(ddt, type, ddt_class));
 
         return (ddt_ops[type]->ddt_op_count(ddt->ddt_os,
-            ddt->ddt_object[type][class]));
+            ddt->ddt_object[type][ddt_class]));
 }
 
 int
-ddt_object_info(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
+ddt_object_info(ddt_t *ddt, enum ddt_type type, enum ddt_class ddt_class,
     dmu_object_info_t *doi)
 {
-        if (!ddt_object_exists(ddt, type, class))
+        if (!ddt_object_exists(ddt, type, ddt_class))
                 return (SET_ERROR(ENOENT));
 
-        return (dmu_object_info(ddt->ddt_os, ddt->ddt_object[type][class],
+        return (dmu_object_info(ddt->ddt_os, ddt->ddt_object[type][ddt_class],
             doi));
 }
 
 boolean_t
-ddt_object_exists(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
+ddt_object_exists(ddt_t *ddt, enum ddt_type type, enum ddt_class ddt_class)
 {
-        return (!!ddt->ddt_object[type][class]);
+        return (!!ddt->ddt_object[type][ddt_class]);
 }
 
 void
-ddt_object_name(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
+ddt_object_name(ddt_t *ddt, enum ddt_type type, enum ddt_class ddt_class,
     char *name)
 {
         (void) sprintf(name, DMU_POOL_DDT,
             zio_checksum_table[ddt->ddt_checksum].ci_name,
-            ddt_ops[type]->ddt_op_name, ddt_class_name[class]);
+            ddt_ops[type]->ddt_op_name, ddt_class_name[ddt_class]);
 }
 
 void
 ddt_bp_fill(const ddt_phys_t *ddp, blkptr_t *bp, uint64_t txg)
 {