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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_BPLIST_H 27 #define _SYS_BPLIST_H 28 29 #include <sys/dmu.h> 30 #include <sys/spa.h> 31 #include <sys/txg.h> 32 #include <sys/zfs_context.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 typedef struct bplist_phys { 39 /* 40 * This is the bonus buffer for the dead lists. The object's 41 * contents is an array of bpl_entries blkptr_t's, representing 42 * a total of bpl_bytes physical space. 43 */ 44 uint64_t bpl_entries; 45 uint64_t bpl_bytes; 46 uint64_t bpl_comp; 47 uint64_t bpl_uncomp; 48 } bplist_phys_t; 49 50 #define BPLIST_SIZE_V0 (2 * sizeof (uint64_t)) 51 52 typedef struct bplist_q { 53 blkptr_t bpq_blk; 54 void *bpq_next; 55 } bplist_q_t; 56 57 typedef struct bplist { 58 kmutex_t bpl_lock; 59 objset_t *bpl_mos; 60 uint64_t bpl_object; 61 uint8_t bpl_blockshift; 62 uint8_t bpl_bpshift; 63 uint8_t bpl_havecomp; 64 bplist_q_t *bpl_queue; 65 bplist_phys_t *bpl_phys; 66 dmu_buf_t *bpl_dbuf; 67 dmu_buf_t *bpl_cached_dbuf; 68 } bplist_t; 69 70 extern uint64_t bplist_create(objset_t *mos, int blocksize, dmu_tx_t *tx); 71 extern void bplist_destroy(objset_t *mos, uint64_t object, dmu_tx_t *tx); 72 extern int bplist_open(bplist_t *bpl, objset_t *mos, uint64_t object); 73 extern void bplist_close(bplist_t *bpl); 74 extern boolean_t bplist_empty(bplist_t *bpl); 75 extern int bplist_iterate(bplist_t *bpl, uint64_t *itorp, blkptr_t *bp); 76 extern int bplist_enqueue(bplist_t *bpl, const blkptr_t *bp, dmu_tx_t *tx); 77 extern void bplist_enqueue_deferred(bplist_t *bpl, const blkptr_t *bp); 78 extern void bplist_sync(bplist_t *bpl, dmu_tx_t *tx); 79 extern void bplist_vacate(bplist_t *bpl, dmu_tx_t *tx); 80 extern int bplist_space(bplist_t *bpl, 81 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 82 extern int bplist_space_birthrange(bplist_t *bpl, 83 uint64_t mintxg, uint64_t maxtxg, uint64_t *dasizep); 84 85 #ifdef __cplusplus 86 } 87 #endif 88 89 #endif /* _SYS_BPLIST_H */ 90