include/sys/dsl_deadlist.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2018, 2019 by Delphix. All rights reserved.
  24  */
  25
  26 #ifndef _SYS_DSL_DEADLIST_H
  27 #define _SYS_DSL_DEADLIST_H
  28
  29 #include <sys/bpobj.h>
  30 #include <sys/zfs_context.h>
  31 #include <sys/zthr.h>
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 struct dmu_buf;
  38 struct dsl_pool;
  39 struct dsl_dataset;
  40
  41 typedef struct dsl_deadlist_phys {
  42         uint64_t dl_used;
  43         uint64_t dl_comp;
  44         uint64_t dl_uncomp;
  45         uint64_t dl_pad[37]; /* pad out to 320b for future expansion */
  46 } dsl_deadlist_phys_t;
  47
  48 typedef struct dsl_deadlist {
  49         objset_t *dl_os;
  50         uint64_t dl_object;
  51         avl_tree_t dl_tree; /* contains dsl_deadlist_entry_t */
  52         avl_tree_t dl_cache; /* contains dsl_deadlist_cache_entry_t */
  53         boolean_t dl_havetree;
  54         boolean_t dl_havecache;
  55         struct dmu_buf *dl_dbuf;
  56         dsl_deadlist_phys_t *dl_phys;
  57         kmutex_t dl_lock;
  58
  59         /* if it's the old on-disk format: */
  60         bpobj_t dl_bpobj;
  61         boolean_t dl_oldfmt;
  62 } dsl_deadlist_t;
  63
  64 typedef struct dsl_deadlist_cache_entry {
  65         avl_node_t dlce_node;
  66         uint64_t dlce_mintxg;
  67         uint64_t dlce_bpobj;
  68         uint64_t dlce_bytes;
  69         uint64_t dlce_comp;
  70         uint64_t dlce_uncomp;
  71 } dsl_deadlist_cache_entry_t;
  72
  73 typedef struct dsl_deadlist_entry {
  74         avl_node_t dle_node;
  75         uint64_t dle_mintxg;
  76         bpobj_t dle_bpobj;
  77 } dsl_deadlist_entry_t;
  78
  79 typedef struct livelist_condense_entry {
  80         struct dsl_dataset *ds;
  81         dsl_deadlist_entry_t *first;
  82         dsl_deadlist_entry_t *next;
  83         boolean_t syncing;
  84         boolean_t cancelled;
  85 } livelist_condense_entry_t;
  86
  87 extern uint64_t zfs_livelist_max_entries;
  88 extern int zfs_livelist_min_percent_shared;
  89
  90 typedef int deadlist_iter_t(void *args, dsl_deadlist_entry_t *dle);
  91
  92 int dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
  93 void dsl_deadlist_close(dsl_deadlist_t *dl);
  94 void dsl_deadlist_iterate(dsl_deadlist_t *dl, deadlist_iter_t func, void *arg);
  95 uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);
  96 void dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx);
  97 void dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp,
  98     boolean_t free, dmu_tx_t *tx);
  99 int dsl_deadlist_insert_alloc_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
 100 int dsl_deadlist_insert_free_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
 101 void dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
 102 void dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
 103 void dsl_deadlist_remove_entry(dsl_deadlist_t *dl, uint64_t mintxg,
 104 dmu_tx_t *tx);
 105 dsl_deadlist_entry_t *dsl_deadlist_first(dsl_deadlist_t *dl);
 106 dsl_deadlist_entry_t *dsl_deadlist_last(dsl_deadlist_t *dl);
 107 uint64_t dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg,
 108     uint64_t mrs_obj, dmu_tx_t *tx);
 109 void dsl_deadlist_space(dsl_deadlist_t *dl,
 110     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
 111 void dsl_deadlist_space_range(dsl_deadlist_t *dl,
 112     uint64_t mintxg, uint64_t maxtxg,
 113     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
 114 void dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx);
 115 void dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg,
 116     dmu_tx_t *tx);
 117 boolean_t dsl_deadlist_is_open(dsl_deadlist_t *dl);
 118 int dsl_process_sub_livelist(bpobj_t *bpobj, struct bplist *to_free,
 119     zthr_t *t, uint64_t *size);
 120 void dsl_deadlist_clear_entry(dsl_deadlist_entry_t *dle, dsl_deadlist_t *dl,
 121     dmu_tx_t *tx);
 122 void dsl_deadlist_discard_tree(dsl_deadlist_t *dl);
 123
 124 #ifdef  __cplusplus
 125 }
 126 #endif
 127
 128 #endif /* _SYS_DSL_DEADLIST_H */