Imported Upstream version 0.6.5.3

[mirror_zfs-debian.git] / include / sys / dsl_dataset.h

diff --git a/include/sys/dsl_dataset.h b/include/sys/dsl_dataset.h
index 4ef70adc27cfa7ad15754546d7a6b69287081ebd..d6da5dcfdb9f8472ae3eff9f6d3bb09c7dce5688 100644 (file)
--- a/include/sys/dsl_dataset.h
+++ b/include/sys/dsl_dataset.h
@@ -21,8 +21,9 @@
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2013 by Delphix. All rights reserved.
- * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2013, Joyent, Inc. All rights reserved.
  * Copyright (c) 2013 Steven Hartland. All rights reserved.
+ * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
  */
 
 #ifndef        _SYS_DSL_DATASET_H
@@ -48,7 +49,7 @@ struct dsl_pool;
 
 #define        DS_FLAG_INCONSISTENT    (1ULL<<0)
 #define        DS_IS_INCONSISTENT(ds)  \
-       ((ds)->ds_phys->ds_flags & DS_FLAG_INCONSISTENT)
+       (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_INCONSISTENT)
 
 /*
  * Do not allow this dataset to be promoted.
@@ -68,7 +69,7 @@ struct dsl_pool;
  */
 #define        DS_FLAG_DEFER_DESTROY   (1ULL<<3)
 #define        DS_IS_DEFER_DESTROY(ds) \
-       ((ds)->ds_phys->ds_flags & DS_FLAG_DEFER_DESTROY)
+       (dsl_dataset_phys(ds)->ds_flags & DS_FLAG_DEFER_DESTROY)
 
 /*
  * DS_FIELD_* are strings that are used in the "extensified" dataset zap object.
@@ -82,6 +83,13 @@ struct dsl_pool;
  */
 #define        DS_FIELD_BOOKMARK_NAMES "com.delphix:bookmarks"
 
+/*
+ * This field is present (with value=0) if this dataset may contain large
+ * blocks (>128KB).  If it is present, then this dataset
+ * is counted in the refcount of the SPA_FEATURE_LARGE_BLOCKS feature.
+ */
+#define        DS_FIELD_LARGE_BLOCKS "org.open-zfs:large_blocks"
+
 /*
  * DS_FLAG_CI_DATASET is set if the dataset contains a file system whose
  * name lookups should be performed case-insensitively.
@@ -125,16 +133,20 @@ typedef struct dsl_dataset_phys {
 } dsl_dataset_phys_t;
 
 typedef struct dsl_dataset {
+       dmu_buf_user_t ds_dbu;
+
        /* Immutable: */
        struct dsl_dir *ds_dir;
-       dsl_dataset_phys_t *ds_phys;
        dmu_buf_t *ds_dbuf;
        uint64_t ds_object;
        uint64_t ds_fsid_guid;
+       boolean_t ds_is_snapshot;
 
        /* only used in syncing context, only valid for non-snapshots: */
        struct dsl_dataset *ds_prev;
        uint64_t ds_bookmarks;  /* DMU_OTN_ZAP_METADATA */
+       boolean_t ds_large_blocks;
+       boolean_t ds_need_large_blocks;
 
        /* has internal locking: */
        dsl_deadlist_t ds_deadlist;
@@ -177,6 +189,12 @@ typedef struct dsl_dataset {
        char ds_snapname[MAXNAMELEN];
 } dsl_dataset_t;
 
+static inline dsl_dataset_phys_t *
+dsl_dataset_phys(dsl_dataset_t *ds)
+{
+       return (ds->ds_dbuf->db_data);
+}
+
 /*
  * The max length of a temporary tag prefix is the number of hex digits
  * required to express UINT64_MAX plus one for the hyphen.
@@ -184,13 +202,15 @@ typedef struct dsl_dataset {
 #define        MAX_TAG_PREFIX_LEN      17
 
 #define        dsl_dataset_is_snapshot(ds) \
-       ((ds)->ds_phys->ds_num_children != 0)
+       (dsl_dataset_phys(ds)->ds_num_children != 0)
 
 #define        DS_UNIQUE_IS_ACCURATE(ds)       \
-       (((ds)->ds_phys->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
+       ((dsl_dataset_phys(ds)->ds_flags & DS_FLAG_UNIQUE_ACCURATE) != 0)
 
 int dsl_dataset_hold(struct dsl_pool *dp, const char *name, void *tag,
     dsl_dataset_t **dsp);
+boolean_t dsl_dataset_try_add_ref(struct dsl_pool *dp, dsl_dataset_t *ds,
+    void *tag);
 int dsl_dataset_hold_obj(struct dsl_pool *dp, uint64_t dsobj, void *tag,
     dsl_dataset_t **);
 void dsl_dataset_rele(dsl_dataset_t *ds, void *tag);
@@ -244,6 +264,8 @@ int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *new,
 int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
 boolean_t dsl_dataset_is_dirty(dsl_dataset_t *ds);
+int dsl_dataset_activate_large_blocks(const char *dsname);
+void dsl_dataset_activate_large_blocks_sync_impl(uint64_t dsobj, dmu_tx_t *tx);
 
 int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);
 
@@ -266,7 +288,7 @@ int dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
 void dsl_dataset_clone_swap_sync_impl(dsl_dataset_t *clone,
     dsl_dataset_t *origin_head, dmu_tx_t *tx);
 int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname,
-    dmu_tx_t *tx, boolean_t recv);
+    dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr);
 void dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, const char *snapname,
     dmu_tx_t *tx);
 
@@ -276,7 +298,8 @@ void dsl_dataset_recalc_head_uniq(dsl_dataset_t *ds);
 int dsl_dataset_get_snapname(dsl_dataset_t *ds);
 int dsl_dataset_snap_lookup(dsl_dataset_t *ds, const char *name,
     uint64_t *value);
-int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx);
+int dsl_dataset_snap_remove(dsl_dataset_t *ds, const char *name, dmu_tx_t *tx,
+    boolean_t adj_cnt);
 void dsl_dataset_set_refreservation_sync_impl(dsl_dataset_t *ds,
     zprop_source_t source, uint64_t value, dmu_tx_t *tx);
 void dsl_dataset_zapify(dsl_dataset_t *ds, dmu_tx_t *tx);