kernel/fs/zfs/sys/bptree.h

   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 (c) 2012, 2014 by Delphix. All rights reserved.
  23  */
  24
  25 #ifndef _SYS_BPTREE_H
  26 #define _SYS_BPTREE_H
  27
  28 #include <sys/spa.h>
  29 #include <sys/zio.h>
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 typedef struct bptree_phys {
  36         uint64_t bt_begin;
  37         uint64_t bt_end;
  38         uint64_t bt_bytes;
  39         uint64_t bt_comp;
  40         uint64_t bt_uncomp;
  41 } bptree_phys_t;
  42
  43 typedef struct bptree_entry_phys {
  44         blkptr_t be_bp;
  45         uint64_t be_birth_txg; /* only delete blocks born after this txg */
  46         zbookmark_phys_t be_zb; /* holds traversal resume point if needed */
  47 } bptree_entry_phys_t;
  48
  49 typedef int bptree_itor_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
  50
  51 uint64_t bptree_alloc(objset_t *os, dmu_tx_t *tx);
  52 int bptree_free(objset_t *os, uint64_t obj, dmu_tx_t *tx);
  53 boolean_t bptree_is_empty(objset_t *os, uint64_t obj);
  54
  55 void bptree_add(objset_t *os, uint64_t obj, blkptr_t *bp, uint64_t birth_txg,
  56     uint64_t bytes, uint64_t comp, uint64_t uncomp, dmu_tx_t *tx);
  57
  58 int bptree_iterate(objset_t *os, uint64_t obj, boolean_t free,
  59     bptree_itor_t func, void *arg, dmu_tx_t *tx);
  60
  61 #ifdef  __cplusplus
  62 }
  63 #endif
  64
  65 #endif  /* _SYS_BPTREE_H */