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4101 metaslab_debug should allow for fine-grained control
4102 space_maps should store more information about themselves
4103 space map object blocksize should be increased
4104 ::spa_space no longer works
4105 removing a mirrored log device results in a leaked object
4106 asynchronously load metaslab
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Sebastien Roy <seb@delphix.com>

@@ -18,11 +18,11 @@
  *
  * CDDL HEADER END
  */
 
 /*
- * Copyright (c) 2012 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
  */
 
 #ifndef _SYS_ZFEATURE_H
 #define _SYS_ZFEATURE_H
 

@@ -45,10 +45,11 @@
     struct dmu_tx *);
 extern void spa_feature_incr(struct spa *, zfeature_info_t *, struct dmu_tx *);
 extern void spa_feature_decr(struct spa *, zfeature_info_t *, struct dmu_tx *);
 extern boolean_t spa_feature_is_enabled(struct spa *, zfeature_info_t *);
 extern boolean_t spa_feature_is_active(struct spa *, zfeature_info_t *);
+extern int spa_feature_get_refcount(struct spa *, zfeature_info_t *);
 
 #ifdef  __cplusplus
 }
 #endif