FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/dsl_deadlist.h

     /*
      * 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 https://opensource.org/licenses/CDDL-1.0.
     * 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 (c) 2010, Oracle and/or its affiliates. All rights reserved.
     * Copyright (c) 2018, 2019 by Delphix. All rights reserved.
     */
    
    #ifndef _SYS_DSL_DEADLIST_H
    #define _SYS_DSL_DEADLIST_H
    
    #include <sys/bpobj.h>
    #include <sys/zfs_context.h>
    #include <sys/zthr.h>
    
    #ifdef  __cplusplus
    extern "C" {
    #endif
    
    struct dmu_buf;
    struct dsl_pool;
    struct dsl_dataset;
    
    typedef struct dsl_deadlist_phys {
            uint64_t dl_used;
            uint64_t dl_comp;
            uint64_t dl_uncomp;
            uint64_t dl_pad[37]; /* pad out to 320b for future expansion */
    } dsl_deadlist_phys_t;
    
    typedef struct dsl_deadlist {
            objset_t *dl_os;
            uint64_t dl_object;
            avl_tree_t dl_tree; /* contains dsl_deadlist_entry_t */
            avl_tree_t dl_cache; /* contains dsl_deadlist_cache_entry_t */
            boolean_t dl_havetree;
            boolean_t dl_havecache;
            struct dmu_buf *dl_dbuf;
            dsl_deadlist_phys_t *dl_phys;
            kmutex_t dl_lock;
    
            /* if it's the old on-disk format: */
            bpobj_t dl_bpobj;
            boolean_t dl_oldfmt;
    } dsl_deadlist_t;
    
    typedef struct dsl_deadlist_cache_entry {
            avl_node_t dlce_node;
            uint64_t dlce_mintxg;
            uint64_t dlce_bpobj;
            uint64_t dlce_bytes;
            uint64_t dlce_comp;
            uint64_t dlce_uncomp;
    } dsl_deadlist_cache_entry_t;
    
    typedef struct dsl_deadlist_entry {
            avl_node_t dle_node;
            uint64_t dle_mintxg;
            bpobj_t dle_bpobj;
    } dsl_deadlist_entry_t;
    
    typedef struct livelist_condense_entry {
            struct dsl_dataset *ds;
            dsl_deadlist_entry_t *first;
            dsl_deadlist_entry_t *next;
            boolean_t syncing;
            boolean_t cancelled;
    } livelist_condense_entry_t;
    
    extern uint64_t zfs_livelist_max_entries;
    extern int zfs_livelist_min_percent_shared;
    
    typedef int deadlist_iter_t(void *args, dsl_deadlist_entry_t *dle);
    
    void dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
    void dsl_deadlist_close(dsl_deadlist_t *dl);
    void dsl_deadlist_iterate(dsl_deadlist_t *dl, deadlist_iter_t func, void *arg);
    uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);
    void dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx);
    void dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp,
        boolean_t free, dmu_tx_t *tx);
    int dsl_deadlist_insert_alloc_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
   int dsl_deadlist_insert_free_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
   void dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
   void dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
   void dsl_deadlist_remove_entry(dsl_deadlist_t *dl, uint64_t mintxg,
   dmu_tx_t *tx);
   dsl_deadlist_entry_t *dsl_deadlist_first(dsl_deadlist_t *dl);
   dsl_deadlist_entry_t *dsl_deadlist_last(dsl_deadlist_t *dl);
   uint64_t dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg,
       uint64_t mrs_obj, dmu_tx_t *tx);
   void dsl_deadlist_space(dsl_deadlist_t *dl,
       uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
   void dsl_deadlist_space_range(dsl_deadlist_t *dl,
       uint64_t mintxg, uint64_t maxtxg,
       uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
   void dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx);
   void dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg,
       dmu_tx_t *tx);
   boolean_t dsl_deadlist_is_open(dsl_deadlist_t *dl);
   int dsl_process_sub_livelist(bpobj_t *bpobj, struct bplist *to_free,
       zthr_t *t, uint64_t *size);
   void dsl_deadlist_clear_entry(dsl_deadlist_entry_t *dle, dsl_deadlist_t *dl,
       dmu_tx_t *tx);
   void dsl_deadlist_discard_tree(dsl_deadlist_t *dl);
   
   #ifdef  __cplusplus
   }
   #endif
   
   #endif /* _SYS_DSL_DEADLIST_H */

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