module/zfs/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  */
  24
  25 #ifndef _SYS_DSL_DEADLIST_H
  26 #define _SYS_DSL_DEADLIST_H
  27
  28 #include <sys/bpobj.h>
  29 #include <sys/zfs_context.h>
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 struct dmu_buf;
  36 struct dsl_dataset;
  37
  38 typedef struct dsl_deadlist_phys {
  39         uint64_t dl_used;
  40         uint64_t dl_comp;
  41         uint64_t dl_uncomp;
  42         uint64_t dl_pad[37]; /* pad out to 320b for future expansion */
  43 } dsl_deadlist_phys_t;
  44
  45 typedef struct dsl_deadlist {
  46         objset_t *dl_os;
  47         uint64_t dl_object;
  48         avl_tree_t dl_tree;
  49         boolean_t dl_havetree;
  50         struct dmu_buf *dl_dbuf;
  51         dsl_deadlist_phys_t *dl_phys;
  52         kmutex_t dl_lock;
  53
  54         /* if it's the old on-disk format: */
  55         bpobj_t dl_bpobj;
  56         boolean_t dl_oldfmt;
  57 } dsl_deadlist_t;
  58
  59 typedef struct dsl_deadlist_entry {
  60         avl_node_t dle_node;
  61         uint64_t dle_mintxg;
  62         bpobj_t dle_bpobj;
  63 } dsl_deadlist_entry_t;
  64
  65 void dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
  66 void dsl_deadlist_close(dsl_deadlist_t *dl);
  67 uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);
  68 void dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx);
  69 void dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, dmu_tx_t *tx);
  70 void dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
  71 void dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
  72 uint64_t dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg,
  73     uint64_t mrs_obj, dmu_tx_t *tx);
  74 void dsl_deadlist_space(dsl_deadlist_t *dl,
  75     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
  76 void dsl_deadlist_space_range(dsl_deadlist_t *dl,
  77     uint64_t mintxg, uint64_t maxtxg,
  78     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
  79 void dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx);
  80 void dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg,
  81     dmu_tx_t *tx);
  82
  83 #ifdef  __cplusplus
  84 }
  85 #endif
  86
  87 #endif /* _SYS_DSL_DEADLIST_H */