bplist.h revision b24ab6762772a3f6a89393947930c7fa61306783
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_BPLIST_H
#define _SYS_BPLIST_H
#include <sys/dmu.h>
#include <sys/spa.h>
#include <sys/txg.h>
#include <sys/zio.h>
#include <sys/zfs_context.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct bplist_phys {
/*
* This is the bonus buffer for the dead lists. The object's
* contents is an array of bpl_entries blkptr_t's, representing
* a total of bpl_bytes physical space.
*/
uint64_t bpl_entries;
uint64_t bpl_bytes;
uint64_t bpl_comp;
uint64_t bpl_uncomp;
} bplist_phys_t;
#define BPLIST_SIZE_V0 (2 * sizeof (uint64_t))
typedef struct bplist_q {
blkptr_t bpq_blk;
void *bpq_next;
} bplist_q_t;
typedef struct bplist {
kmutex_t bpl_lock;
objset_t *bpl_mos;
uint64_t bpl_object;
uint8_t bpl_blockshift;
uint8_t bpl_bpshift;
uint8_t bpl_havecomp;
bplist_q_t *bpl_queue;
bplist_phys_t *bpl_phys;
dmu_buf_t *bpl_dbuf;
dmu_buf_t *bpl_cached_dbuf;
} bplist_t;
typedef void bplist_sync_cb_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
extern void bplist_init(bplist_t *bpl);
extern void bplist_fini(bplist_t *bpl);
extern uint64_t bplist_create(objset_t *mos, int blocksize, dmu_tx_t *tx);
extern void bplist_destroy(objset_t *mos, uint64_t object, dmu_tx_t *tx);
extern int bplist_open(bplist_t *bpl, objset_t *mos, uint64_t object);
extern void bplist_close(bplist_t *bpl);
extern boolean_t bplist_empty(bplist_t *bpl);
extern int bplist_iterate(bplist_t *bpl, uint64_t *itorp, blkptr_t *bp);
extern int bplist_enqueue(bplist_t *bpl, const blkptr_t *bp, dmu_tx_t *tx);
extern void bplist_enqueue_cb(void *bpl, const blkptr_t *bp, dmu_tx_t *tx);
extern void bplist_enqueue_deferred(bplist_t *bpl, const blkptr_t *bp);
extern void bplist_sync(bplist_t *bpl, bplist_sync_cb_t *func,
void *arg, dmu_tx_t *tx);
extern void bplist_vacate(bplist_t *bpl, dmu_tx_t *tx);
extern int bplist_space(bplist_t *bpl,
uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
extern int bplist_space_birthrange(bplist_t *bpl,
uint64_t mintxg, uint64_t maxtxg, uint64_t *dsizep);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_BPLIST_H */