57 uint64_t dd_child_dir_zapobj;
58 /*
59 * how much space our children are accounting for; for leaf
60 * datasets, == physical space used by fs + snaps
61 */
62 uint64_t dd_used_bytes;
63 uint64_t dd_compressed_bytes;
64 uint64_t dd_uncompressed_bytes;
65 /* Administrative quota setting */
66 uint64_t dd_quota;
67 /* Administrative reservation setting */
68 uint64_t dd_reserved;
69 uint64_t dd_props_zapobj;
70 uint64_t dd_deleg_zapobj; /* dataset delegation permissions */
71 uint64_t dd_flags;
72 uint64_t dd_used_breakdown[DD_USED_NUM];
73 uint64_t dd_clones; /* dsl_dir objects */
74 uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */
75 } dsl_dir_phys_t;
76
77 struct dsl_dir {
78 /* These are immutable; no lock needed: */
79 uint64_t dd_object;
80 dsl_dir_phys_t *dd_phys;
81 dmu_buf_t *dd_dbuf;
82 dsl_pool_t *dd_pool;
83
84 /* protected by lock on pool's dp_dirty_dirs list */
85 txg_node_t dd_dirty_link;
86
87 /* protected by dp_config_rwlock */
88 dsl_dir_t *dd_parent;
89
90 /* Protected by dd_lock */
91 kmutex_t dd_lock;
92 list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */
93 timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */
94 uint64_t dd_origin_txg;
95
96 /* gross estimate of space used by in-flight tx's */
97 uint64_t dd_tempreserved[TXG_SIZE];
98 /* amount of space we expect to write; == amount of dirty data */
99 int64_t dd_space_towrite[TXG_SIZE];
100
101 /* protected by dd_lock; keep at end of struct for better locality */
102 char dd_myname[MAXNAMELEN];
103 };
104
105 void dsl_dir_rele(dsl_dir_t *dd, void *tag);
106 int dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag,
107 dsl_dir_t **, const char **tail);
108 int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj,
109 const char *tail, void *tag, dsl_dir_t **);
110 void dsl_dir_name(dsl_dir_t *dd, char *buf);
111 int dsl_dir_namelen(dsl_dir_t *dd);
112 uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds,
113 const char *name, dmu_tx_t *tx);
114 void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv);
115 uint64_t dsl_dir_space_available(dsl_dir_t *dd,
116 dsl_dir_t *ancestor, int64_t delta, int ondiskonly);
117 void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx);
118 void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx);
119 int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
120 uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep,
121 dmu_tx_t *tx);
122 void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx);
123 void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx);
124 void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type,
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57 uint64_t dd_child_dir_zapobj;
58 /*
59 * how much space our children are accounting for; for leaf
60 * datasets, == physical space used by fs + snaps
61 */
62 uint64_t dd_used_bytes;
63 uint64_t dd_compressed_bytes;
64 uint64_t dd_uncompressed_bytes;
65 /* Administrative quota setting */
66 uint64_t dd_quota;
67 /* Administrative reservation setting */
68 uint64_t dd_reserved;
69 uint64_t dd_props_zapobj;
70 uint64_t dd_deleg_zapobj; /* dataset delegation permissions */
71 uint64_t dd_flags;
72 uint64_t dd_used_breakdown[DD_USED_NUM];
73 uint64_t dd_clones; /* dsl_dir objects */
74 uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */
75 } dsl_dir_phys_t;
76
77 typedef struct dsl_dir_dbuf {
78 uint8_t dddb_pad[offsetof(dmu_buf_t, db_data)];
79 dsl_dir_phys_t *dddb_data;
80 } dsl_dir_dbuf_t;
81
82 struct dsl_dir {
83 dmu_buf_user_t db_evict;
84
85 /* These are immutable; no lock needed: */
86 uint64_t dd_object;
87 union {
88 dmu_buf_t *dd_dmu_db;
89 dsl_dir_dbuf_t *dd_db;
90 } dd_db_u;
91 dsl_pool_t *dd_pool;
92
93 /* protected by lock on pool's dp_dirty_dirs list */
94 txg_node_t dd_dirty_link;
95
96 /* protected by dp_config_rwlock */
97 dsl_dir_t *dd_parent;
98
99 /* Protected by dd_lock */
100 kmutex_t dd_lock;
101 list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */
102 timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */
103 uint64_t dd_origin_txg;
104
105 /* gross estimate of space used by in-flight tx's */
106 uint64_t dd_tempreserved[TXG_SIZE];
107 /* amount of space we expect to write; == amount of dirty data */
108 int64_t dd_space_towrite[TXG_SIZE];
109
110 /* protected by dd_lock; keep at end of struct for better locality */
111 char dd_myname[MAXNAMELEN];
112 };
113
114 /* See sys/dmu.h:dmu_buf_user_t for why we have these. */
115 #define dd_dbuf dd_db_u.dd_dmu_db
116 #define dd_phys dd_db_u.dd_db->dddb_data
117
118 void dsl_dir_rele(dsl_dir_t *dd, void *tag);
119 int dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag,
120 dsl_dir_t **, const char **tail);
121 int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj,
122 const char *tail, void *tag, dsl_dir_t **);
123 void dsl_dir_name(dsl_dir_t *dd, char *buf);
124 int dsl_dir_namelen(dsl_dir_t *dd);
125 uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds,
126 const char *name, dmu_tx_t *tx);
127 void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv);
128 uint64_t dsl_dir_space_available(dsl_dir_t *dd,
129 dsl_dir_t *ancestor, int64_t delta, int ondiskonly);
130 void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx);
131 void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx);
132 int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
133 uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep,
134 dmu_tx_t *tx);
135 void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx);
136 void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx);
137 void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type,
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