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 http://www.opensolaris.org/os/licensing.
  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) 2015 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
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 struct dmu_buf;
  37 struct dsl_dataset;
  38
  39 typedef struct dsl_deadlist_phys {
  40         uint64_t dl_used;
  41         uint64_t dl_comp;
  42         uint64_t dl_uncomp;
  43         uint64_t dl_pad[37]; /* pad out to 320b for future expansion */
  44 } dsl_deadlist_phys_t;
  45
  46 typedef struct dsl_deadlist {
  47         objset_t *dl_os;
  48         uint64_t dl_object;
  49         avl_tree_t dl_tree;
  50         boolean_t dl_havetree;
  51         struct dmu_buf *dl_dbuf;
  52         dsl_deadlist_phys_t *dl_phys;
  53         kmutex_t dl_lock;
  54
  55         /* if it's the old on-disk format: */
  56         bpobj_t dl_bpobj;
  57         boolean_t dl_oldfmt;
  58 } dsl_deadlist_t;
  59
  60 typedef struct dsl_deadlist_entry {
  61         avl_node_t dle_node;
  62         uint64_t dle_mintxg;
  63         bpobj_t dle_bpobj;
  64 } dsl_deadlist_entry_t;
  65
  66 void dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
  67 void dsl_deadlist_close(dsl_deadlist_t *dl);
  68 uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);
  69 void dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx);
  70 void dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, dmu_tx_t *tx);
  71 void dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
  72 void dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
  73 uint64_t dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg,
  74     uint64_t mrs_obj, dmu_tx_t *tx);
  75 void dsl_deadlist_space(dsl_deadlist_t *dl,
  76     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
  77 void dsl_deadlist_space_range(dsl_deadlist_t *dl,
  78     uint64_t mintxg, uint64_t maxtxg,
  79     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
  80 void dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx);
  81 void dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg,
  82     dmu_tx_t *tx);
  83 boolean_t dsl_deadlist_is_open(dsl_deadlist_t *dl);
  84
  85 #ifdef  __cplusplus
  86 }
  87 #endif
  88
  89 #endif /* _SYS_DSL_DEADLIST_H */