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 2006 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 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/dmu.h> 32 #include <sys/spa.h> 33 #include <sys/txg.h> 34 #include <sys/zfs_context.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 typedef struct bplist_phys { 41 /* 42 * This is the bonus buffer for the dead lists. The object's 43 * contents is an array of bpl_entries blkptr_t's, representing 44 * a total of bpl_bytes physical space. 45 */ 46 uint64_t bpl_entries; 47 uint64_t bpl_bytes; 48 uint64_t bpl_comp; 49 uint64_t bpl_uncomp; 50 } bplist_phys_t; 51 52 #define BPLIST_SIZE_V0 (2 * sizeof (uint64_t)) 53 54 typedef struct bplist_q { 55 blkptr_t bpq_blk; 56 void *bpq_next; 57 } bplist_q_t; 58 59 typedef struct bplist { 60 kmutex_t bpl_lock; 61 objset_t *bpl_mos; 62 uint64_t bpl_object; 63 uint8_t bpl_blockshift; 64 uint8_t bpl_bpshift; 65 uint8_t bpl_havecomp; 66 bplist_q_t *bpl_queue; 67 bplist_phys_t *bpl_phys; 68 dmu_buf_t *bpl_dbuf; 69 dmu_buf_t *bpl_cached_dbuf; 70 } bplist_t; 71 72 extern uint64_t bplist_create(objset_t *mos, int blocksize, dmu_tx_t *tx); 73 extern void bplist_destroy(objset_t *mos, uint64_t object, dmu_tx_t *tx); 74 extern int bplist_open(bplist_t *bpl, objset_t *mos, uint64_t object); 75 extern void bplist_close(bplist_t *bpl); 76 extern boolean_t bplist_empty(bplist_t *bpl); 77 extern int bplist_iterate(bplist_t *bpl, uint64_t *itorp, blkptr_t *bp); 78 extern int bplist_enqueue(bplist_t *bpl, blkptr_t *bp, dmu_tx_t *tx); 79 extern void bplist_enqueue_deferred(bplist_t *bpl, blkptr_t *bp); 80 extern void bplist_sync(bplist_t *bpl, dmu_tx_t *tx); 81 extern void bplist_vacate(bplist_t *bpl, dmu_tx_t *tx); 82 extern int bplist_space(bplist_t *bpl, 83 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 84 85 #ifdef __cplusplus 86 } 87 #endif 88 89 #endif /* _SYS_BPLIST_H */ 90