35 
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39 
  40 
  41 typedef struct metaslab_ops {
  42         uint64_t (*msop_alloc)(metaslab_t *, uint64_t);
  43 } metaslab_ops_t;
  44 
  45 
  46 extern metaslab_ops_t *zfs_metaslab_ops;
  47 
  48 int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t,
  49     metaslab_t **);
  50 void metaslab_fini(metaslab_t *);
  51 
  52 int metaslab_load(metaslab_t *);
  53 void metaslab_unload(metaslab_t *);
  54 


  55 void metaslab_sync(metaslab_t *, uint64_t);
  56 void metaslab_sync_done(metaslab_t *, uint64_t);
  57 void metaslab_sync_reassess(metaslab_group_t *);
  58 uint64_t metaslab_block_maxsize(metaslab_t *);
  59 
  60 /*
  61  * metaslab alloc flags
  62  */
  63 #define METASLAB_HINTBP_FAVOR           0x0
  64 #define METASLAB_HINTBP_AVOID           0x1
  65 #define METASLAB_GANG_HEADER            0x2
  66 #define METASLAB_GANG_CHILD             0x4
  67 #define METASLAB_ASYNC_ALLOC            0x8
  68 #define METASLAB_DONT_THROTTLE          0x10
  69 #define METASLAB_MUST_RESERVE           0x20
  70 #define METASLAB_FASTWRITE              0x40
  71 
  72 int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t,
  73     blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *,
  74     int);

  98     zio_t *, int);
  99 void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *);
 100 
 101 uint64_t metaslab_class_get_alloc(metaslab_class_t *);
 102 uint64_t metaslab_class_get_space(metaslab_class_t *);
 103 uint64_t metaslab_class_get_dspace(metaslab_class_t *);
 104 uint64_t metaslab_class_get_deferred(metaslab_class_t *);
 105 
 106 metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int);
 107 void metaslab_group_destroy(metaslab_group_t *);
 108 void metaslab_group_activate(metaslab_group_t *);
 109 void metaslab_group_passivate(metaslab_group_t *);
 110 boolean_t metaslab_group_initialized(metaslab_group_t *);
 111 uint64_t metaslab_group_get_space(metaslab_group_t *);
 112 void metaslab_group_histogram_verify(metaslab_group_t *);
 113 uint64_t metaslab_group_fragmentation(metaslab_group_t *);
 114 void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *);
 115 void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int, int,
 116     boolean_t);
 117 void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *, int);

 118 
 119 #ifdef  __cplusplus
 120 }
 121 #endif
 122 
 123 #endif  /* _SYS_METASLAB_H */

  35 
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39 
  40 
  41 typedef struct metaslab_ops {
  42         uint64_t (*msop_alloc)(metaslab_t *, uint64_t);
  43 } metaslab_ops_t;
  44 
  45 
  46 extern metaslab_ops_t *zfs_metaslab_ops;
  47 
  48 int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t,
  49     metaslab_t **);
  50 void metaslab_fini(metaslab_t *);
  51 
  52 int metaslab_load(metaslab_t *);
  53 void metaslab_unload(metaslab_t *);
  54 
  55 uint64_t metaslab_allocated_space(metaslab_t *);
  56 
  57 void metaslab_sync(metaslab_t *, uint64_t);
  58 void metaslab_sync_done(metaslab_t *, uint64_t);
  59 void metaslab_sync_reassess(metaslab_group_t *);
  60 uint64_t metaslab_block_maxsize(metaslab_t *);
  61 
  62 /*
  63  * metaslab alloc flags
  64  */
  65 #define METASLAB_HINTBP_FAVOR           0x0
  66 #define METASLAB_HINTBP_AVOID           0x1
  67 #define METASLAB_GANG_HEADER            0x2
  68 #define METASLAB_GANG_CHILD             0x4
  69 #define METASLAB_ASYNC_ALLOC            0x8
  70 #define METASLAB_DONT_THROTTLE          0x10
  71 #define METASLAB_MUST_RESERVE           0x20
  72 #define METASLAB_FASTWRITE              0x40
  73 
  74 int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t,
  75     blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *,
  76     int);

 100     zio_t *, int);
 101 void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *);
 102 
 103 uint64_t metaslab_class_get_alloc(metaslab_class_t *);
 104 uint64_t metaslab_class_get_space(metaslab_class_t *);
 105 uint64_t metaslab_class_get_dspace(metaslab_class_t *);
 106 uint64_t metaslab_class_get_deferred(metaslab_class_t *);
 107 
 108 metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int);
 109 void metaslab_group_destroy(metaslab_group_t *);
 110 void metaslab_group_activate(metaslab_group_t *);
 111 void metaslab_group_passivate(metaslab_group_t *);
 112 boolean_t metaslab_group_initialized(metaslab_group_t *);
 113 uint64_t metaslab_group_get_space(metaslab_group_t *);
 114 void metaslab_group_histogram_verify(metaslab_group_t *);
 115 uint64_t metaslab_group_fragmentation(metaslab_group_t *);
 116 void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *);
 117 void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int, int,
 118     boolean_t);
 119 void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *, int);
 120 void metaslab_recalculate_weight_and_sort(metaslab_t *);
 121 
 122 #ifdef  __cplusplus
 123 }
 124 #endif
 125 
 126 #endif  /* _SYS_METASLAB_H */