1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2015, 2019 by Delphix. All rights reserved. 25 */ 26 27 #ifndef _SYS_BPOBJ_H 28 #define _SYS_BPOBJ_H 29 30 #include <sys/dmu.h> 31 #include <sys/spa.h> 32 #include <sys/txg.h> 33 #include <sys/zio.h> 34 #include <sys/zfs_context.h> 35 #include <sys/bplist.h> 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 typedef struct bpobj_phys { 42 /* 43 * This is the bonus buffer for the dead lists. The object's 44 * contents is an array of bpo_entries blkptr_t's, representing 45 * a total of bpo_bytes physical space. 46 */ 47 uint64_t bpo_num_blkptrs; 48 uint64_t bpo_bytes; 49 uint64_t bpo_comp; 50 uint64_t bpo_uncomp; 51 uint64_t bpo_subobjs; 52 uint64_t bpo_num_subobjs; 53 uint64_t bpo_num_freed; 54 } bpobj_phys_t; 55 56 #define BPOBJ_SIZE_V0 (2 * sizeof (uint64_t)) 57 #define BPOBJ_SIZE_V1 (4 * sizeof (uint64_t)) 58 #define BPOBJ_SIZE_V2 (6 * sizeof (uint64_t)) 59 60 typedef struct bpobj { 61 kmutex_t bpo_lock; 62 objset_t *bpo_os; 63 uint64_t bpo_object; 64 uint32_t bpo_epb; 65 uint8_t bpo_havecomp; 66 uint8_t bpo_havesubobj; 67 uint8_t bpo_havefreed; 68 bpobj_phys_t *bpo_phys; 69 dmu_buf_t *bpo_dbuf; 70 dmu_buf_t *bpo_cached_dbuf; 71 } bpobj_t; 72 73 typedef int bpobj_itor_t(void *arg, const blkptr_t *bp, boolean_t bp_freed, 74 dmu_tx_t *tx); 75 76 uint64_t bpobj_alloc(objset_t *mos, int blocksize, dmu_tx_t *tx); 77 uint64_t bpobj_alloc_empty(objset_t *os, int blocksize, dmu_tx_t *tx); 78 void bpobj_free(objset_t *os, uint64_t obj, dmu_tx_t *tx); 79 void bpobj_decr_empty(objset_t *os, dmu_tx_t *tx); 80 81 int bpobj_open(bpobj_t *bpo, objset_t *mos, uint64_t object); 82 void bpobj_close(bpobj_t *bpo); 83 boolean_t bpobj_is_open(const bpobj_t *bpo); 84 85 int bpobj_iterate(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx); 86 int bpobj_iterate_nofree(bpobj_t *bpo, bpobj_itor_t func, void *, uint64_t *); 87 int livelist_bpobj_iterate_from_nofree(bpobj_t *bpo, bpobj_itor_t func, 88 void *arg, int64_t start); 89 90 void bpobj_enqueue_subobj(bpobj_t *bpo, uint64_t subobj, dmu_tx_t *tx); 91 void bpobj_prefetch_subobj(bpobj_t *bpo, uint64_t subobj); 92 void bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, boolean_t bp_freed, 93 dmu_tx_t *tx); 94 95 int bpobj_space(bpobj_t *bpo, 96 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 97 int bpobj_space_range(bpobj_t *bpo, uint64_t mintxg, uint64_t maxtxg, 98 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 99 boolean_t bpobj_is_empty(bpobj_t *bpo); 100 101 int bplist_append_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, 102 dmu_tx_t *tx); 103 104 #ifdef __cplusplus 105 } 106 #endif 107 108 #endif /* _SYS_BPOBJ_H */ 109