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      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 */
     88