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) 2015, 2019 by Delphix. All rights reserved. 24 */ 25 26 #ifndef _SYS_BPOBJ_H 27 #define _SYS_BPOBJ_H 28 29 #include <sys/dmu.h> 30 #include <sys/spa.h> 31 #include <sys/txg.h> 32 #include <sys/zio.h> 33 #include <sys/zfs_context.h> 34 #include <sys/bplist.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 typedef struct bpobj_phys { 41 /* 42 * This is the bonus buffer for the dead lists. The object's 43 * contents is an array of bpo_entries blkptr_t's, representing 44 * a total of bpo_bytes physical space. 45 */ 46 uint64_t bpo_num_blkptrs; 47 uint64_t bpo_bytes; 48 uint64_t bpo_comp; 49 uint64_t bpo_uncomp; 50 uint64_t bpo_subobjs; 51 uint64_t bpo_num_subobjs; 52 uint64_t bpo_num_freed; 53 } bpobj_phys_t; 54 55 #define BPOBJ_SIZE_V0 (2 * sizeof (uint64_t)) 56 #define BPOBJ_SIZE_V1 (4 * sizeof (uint64_t)) 57 #define BPOBJ_SIZE_V2 (6 * sizeof (uint64_t)) 58 59 typedef struct bpobj { 60 kmutex_t bpo_lock; 61 objset_t *bpo_os; 62 uint64_t bpo_object; 63 uint32_t bpo_epb; 64 uint8_t bpo_havecomp; 65 uint8_t bpo_havesubobj; 66 uint8_t bpo_havefreed; 67 bpobj_phys_t *bpo_phys; 68 dmu_buf_t *bpo_dbuf; 69 dmu_buf_t *bpo_cached_dbuf; 70 } bpobj_t; 71 72 typedef int bpobj_itor_t(void *arg, const blkptr_t *bp, boolean_t bp_freed, 73 dmu_tx_t *tx); 74 75 uint64_t bpobj_alloc(objset_t *mos, int blocksize, dmu_tx_t *tx); 76 uint64_t bpobj_alloc_empty(objset_t *os, int blocksize, dmu_tx_t *tx); 77 void bpobj_free(objset_t *os, uint64_t obj, dmu_tx_t *tx); 78 void bpobj_decr_empty(objset_t *os, dmu_tx_t *tx); 79 80 int bpobj_open(bpobj_t *bpo, objset_t *mos, uint64_t object); 81 void bpobj_close(bpobj_t *bpo); 82 boolean_t bpobj_is_open(const bpobj_t *bpo); 83 84 int bpobj_iterate(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx); 85 int bpobj_iterate_nofree(bpobj_t *bpo, bpobj_itor_t func, void *, uint64_t *); 86 int livelist_bpobj_iterate_from_nofree(bpobj_t *bpo, bpobj_itor_t func, 87 void *arg, int64_t start); 88 89 void bpobj_enqueue_subobj(bpobj_t *bpo, uint64_t subobj, dmu_tx_t *tx); 90 void bpobj_prefetch_subobj(bpobj_t *bpo, uint64_t subobj); 91 void bpobj_enqueue(bpobj_t *bpo, const blkptr_t *bp, boolean_t bp_freed, 92 dmu_tx_t *tx); 93 94 int bpobj_space(bpobj_t *bpo, 95 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 96 int bpobj_space_range(bpobj_t *bpo, uint64_t mintxg, uint64_t maxtxg, 97 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 98 boolean_t bpobj_is_empty(bpobj_t *bpo); 99 100 int bplist_append_cb(void *arg, const blkptr_t *bp, boolean_t bp_freed, 101 dmu_tx_t *tx); 102 103 #ifdef __cplusplus 104 } 105 #endif 106 107 #endif /* _SYS_BPOBJ_H */ 108