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 2010 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/zio.h> 33 #include <sys/zfs_context.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 typedef struct bplist_phys { 40 /* 41 * This is the bonus buffer for the dead lists. The object's 42 * contents is an array of bpl_entries blkptr_t's, representing 43 * a total of bpl_bytes physical space. 44 */ 45 uint64_t bpl_entries; 46 uint64_t bpl_bytes; 47 uint64_t bpl_comp; 48 uint64_t bpl_uncomp; 49 } bplist_phys_t; 50 51 #define BPLIST_SIZE_V0 (2 * sizeof (uint64_t)) 52 53 typedef struct bplist_q { 54 blkptr_t bpq_blk; 55 list_node_t bpq_node; 56 } bplist_q_t; 57 58 typedef struct bplist { 59 kmutex_t bpl_lock; 60 objset_t *bpl_mos; 61 uint64_t bpl_object; 62 uint8_t bpl_blockshift; 63 uint8_t bpl_bpshift; 64 uint8_t bpl_havecomp; 65 kmutex_t bpl_q_lock; 66 list_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 typedef void bplist_sync_cb_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx); 73 74 extern void bplist_init(bplist_t *bpl); 75 extern void bplist_fini(bplist_t *bpl); 76 extern uint64_t bplist_create(objset_t *mos, int blocksize, dmu_tx_t *tx); 77 extern void bplist_destroy(objset_t *mos, uint64_t object, dmu_tx_t *tx); 78 extern int bplist_open(bplist_t *bpl, objset_t *mos, uint64_t object); 79 extern void bplist_close(bplist_t *bpl); 80 extern boolean_t bplist_empty(bplist_t *bpl); 81 extern int bplist_iterate(bplist_t *bpl, uint64_t *itorp, blkptr_t *bp); 82 extern int bplist_enqueue(bplist_t *bpl, const blkptr_t *bp, dmu_tx_t *tx); 83 extern void bplist_enqueue_cb(void *bpl, const blkptr_t *bp, dmu_tx_t *tx); 84 extern void bplist_enqueue_deferred(bplist_t *bpl, const blkptr_t *bp); 85 extern void bplist_sync(bplist_t *bpl, bplist_sync_cb_t *func, 86 void *arg, dmu_tx_t *tx); 87 extern void bplist_vacate(bplist_t *bpl, dmu_tx_t *tx); 88 extern int bplist_space(bplist_t *bpl, 89 uint64_t *usedp, uint64_t *compp, uint64_t *uncompp); 90 extern int bplist_space_birthrange(bplist_t *bpl, 91 uint64_t mintxg, uint64_t maxtxg, uint64_t *dsizep); 92 93 #ifdef __cplusplus 94 } 95 #endif 96 97 #endif /* _SYS_BPLIST_H */ 98