/* Garbage collection control */
__u32 *gcCleanupList; /* objects to delete at the end of a GC. */
+ __u32 nCleanups;
unsigned hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
unsigned gcDisable;
__u32 allGCs;
__u32 passiveGCs;
__u32 oldestDirtyGCs;
+ __u32 nGCBlocks;
__u32 backgroundGCs;
__u32 nRetriedWrites;
__u32 nRetiredBlocks;