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Diffstat (limited to 'include/sys/dmu_impl.h')
| -rw-r--r-- | include/sys/dmu_impl.h | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/include/sys/dmu_impl.h b/include/sys/dmu_impl.h deleted file mode 100644 index bae872bd1907..000000000000 --- a/include/sys/dmu_impl.h +++ /dev/null @@ -1,284 +0,0 @@ -// SPDX-License-Identifier: CDDL-1.0 -/* - * 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 2010 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ -/* - * Copyright (c) 2012, Joyent, Inc. All rights reserved. - * Copyright (c) 2013, 2018 by Delphix. All rights reserved. - */ - -#ifndef _SYS_DMU_IMPL_H -#define _SYS_DMU_IMPL_H - -#include <sys/txg_impl.h> -#include <sys/zio.h> -#include <sys/dnode.h> -#include <sys/zfs_context.h> -#include <sys/zfs_ioctl.h> -#include <sys/uio.h> -#include <sys/abd.h> -#include <sys/arc.h> -#include <sys/dbuf.h> - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * This is the locking strategy for the DMU. Numbers in parenthesis are - * cases that use that lock order, referenced below: - * - * ARC is self-contained - * bplist is self-contained - * refcount is self-contained - * txg is self-contained (hopefully!) - * zst_lock - * zf_rwlock - * - * XXX try to improve evicting path? - * - * dp_config_rwlock > os_obj_lock > dn_struct_rwlock > - * dn_dbufs_mtx > hash_mutexes > db_mtx > dd_lock > leafs - * - * dp_config_rwlock - * must be held before: everything - * protects dd namespace changes - * protects property changes globally - * held from: - * dsl_dir_open/r: - * dsl_dir_create_sync/w: - * dsl_dir_sync_destroy/w: - * dsl_dir_rename_sync/w: - * dsl_prop_changed_notify/r: - * - * os_obj_lock - * must be held before: - * everything except dp_config_rwlock - * protects os_obj_next - * held from: - * dmu_object_alloc: dn_dbufs_mtx, db_mtx, hash_mutexes, dn_struct_rwlock - * - * dn_struct_rwlock - * must be held before: - * everything except dp_config_rwlock and os_obj_lock - * protects structure of dnode (eg. nlevels) - * db_blkptr can change when syncing out change to nlevels - * dn_maxblkid - * dn_nlevels - * dn_*blksz* - * phys nlevels, maxblkid, physical blkptr_t's (?) - * held from: - * callers of dbuf_read_impl, dbuf_hold[_impl], dbuf_prefetch - * dmu_object_info_from_dnode: dn_dirty_mtx (dn_datablksz) - * dbuf_read_impl: db_mtx, dmu_zfetch() - * dmu_zfetch: zf_rwlock/r, zst_lock, dbuf_prefetch() - * dbuf_new_size: db_mtx - * dbuf_dirty: db_mtx - * dbuf_findbp: (callers, phys? - the real need) - * dbuf_create: dn_dbufs_mtx, hash_mutexes, db_mtx (phys?) - * dbuf_prefetch: dn_dirty_mtx, hash_mutexes, db_mtx, dn_dbufs_mtx - * dbuf_hold_impl: hash_mutexes, db_mtx, dn_dbufs_mtx, dbuf_findbp() - * dnode_sync/w (increase_indirection): db_mtx (phys) - * dnode_set_blksz/w: dn_dbufs_mtx (dn_*blksz*) - * dnode_new_blkid/w: (dn_maxblkid) - * dnode_free_range/w: dn_dirty_mtx (dn_maxblkid) - * dnode_next_offset: (phys) - * - * dn_dbufs_mtx - * must be held before: - * db_mtx, hash_mutexes - * protects: - * dn_dbufs - * dn_evicted - * held from: - * dmu_evict_user: db_mtx (dn_dbufs) - * dbuf_free_range: db_mtx (dn_dbufs) - * dbuf_remove_ref: db_mtx, callees: - * dbuf_hash_remove: hash_mutexes, db_mtx - * dbuf_create: hash_mutexes, db_mtx (dn_dbufs) - * dnode_set_blksz: (dn_dbufs) - * - * hash_mutexes (global) - * must be held before: - * db_mtx - * protects dbuf_hash_table (global) and db_hash_next - * held from: - * dbuf_find: db_mtx - * dbuf_hash_insert: db_mtx - * dbuf_hash_remove: db_mtx - * - * db_mtx (meta-leaf) - * must be held before: - * dn_mtx, dn_dirty_mtx, dd_lock (leaf mutexes) - * protects: - * db_state - * db_holds - * db_buf - * db_changed - * db_data_pending - * db_dirtied - * db_link - * db_dirty_records - * db_dirtycnt - * db_d.* - * db.* - * held from: - * dbuf_dirty: dn_mtx, dn_dirty_mtx - * dbuf_dirty->dsl_dir_willuse_space: dd_lock - * dbuf_dirty->dbuf_new_block->dsl_dataset_block_freeable: dd_lock - * dbuf_undirty: dn_dirty_mtx (db_d) - * dbuf_write_done: dn_dirty_mtx (db_state) - * dbuf_* - * dmu_buf_update_user: none (db_d) - * dmu_evict_user: none (db_d) (maybe can eliminate) - * dbuf_find: none (db_holds) - * dbuf_hash_insert: none (db_holds) - * dmu_buf_read_array_impl: none (db_state, db_changed) - * dmu_sync: none (db_dirty_records, db_d) - * dnode_reallocate: none (db) - * dmu_write_direct: none (db_dirty_records, db_d) - * dmu_write_direct_done: none (db_dirty_records, db_d) - * - * dn_mtx (leaf) - * protects: - * dn_dirty_dbufs - * dn_ranges - * phys accounting - * dn_allocated_txg - * dn_free_txg - * dn_assigned_txg - * dn_dirtycnt - * dd_assigned_tx - * dn_notxholds - * dn_nodnholds - * (dn_phys copy fields?) - * (dn_phys contents?) - * held from: - * dnode_* - * dbuf_dirty: none - * dbuf_sync: none (phys accounting) - * dbuf_undirty: none (dn_ranges, dn_dirty_dbufs) - * dbuf_write_done: none (phys accounting) - * dmu_object_info_from_dnode: none (accounting) - * dmu_tx_commit: none - * dmu_tx_hold_object_impl: none - * dmu_tx_try_assign: dn_notxholds(cv) - * dmu_tx_unassign: none - * - * dd_lock - * must be held before: - * ds_lock - * ancestors' dd_lock - * protects: - * dd_prop_cbs - * dd_sync_* - * dd_used_bytes - * dd_tempreserved - * dd_space_towrite - * dd_myname - * dd_phys accounting? - * held from: - * dsl_dir_* - * dsl_prop_changed_notify: none (dd_prop_cbs) - * dsl_prop_register: none (dd_prop_cbs) - * dsl_prop_unregister: none (dd_prop_cbs) - * - * os_lock (leaf) - * protects: - * os_dirty_dnodes - * os_free_dnodes - * os_dnodes - * os_downgraded_dbufs - * dn_dirtyblksz - * dn_dirty_link - * held from: - * dnode_create: none (os_dnodes) - * dnode_destroy: none (os_dnodes) - * dnode_setdirty: none (dn_dirtyblksz, os_*_dnodes) - * dnode_free: none (dn_dirtyblksz, os_*_dnodes) - * - * ds_lock - * protects: - * ds_objset - * ds_open_refcount - * ds_snapname - * ds_phys accounting - * ds_phys userrefs zapobj - * ds_reserved - * held from: - * dsl_dataset_* - * - * dr_mtx (leaf) - * protects: - * dr_children - * held from: - * dbuf_dirty - * dbuf_undirty - * dbuf_sync_indirect - * dnode_new_blkid - */ - -struct dmu_pool; -struct dmu_buf; -struct zgd; - -typedef struct dmu_sendstatus { - list_node_t dss_link; - int dss_outfd; - proc_t *dss_proc; - offset_t *dss_off; - uint64_t dss_blocks; /* blocks visited during the sending process */ -} dmu_sendstatus_t; - -/* - * dmu_sync_{ready/done} args - */ -typedef struct { - dbuf_dirty_record_t *dsa_dr; - void (*dsa_done)(struct zgd *, int); - struct zgd *dsa_zgd; - dmu_tx_t *dsa_tx; -} dmu_sync_arg_t; - -void dmu_sync_done(zio_t *, arc_buf_t *buf, void *varg); -void dmu_sync_ready(zio_t *, arc_buf_t *buf, void *varg); - -void dmu_object_zapify(objset_t *, uint64_t, dmu_object_type_t, dmu_tx_t *); -void dmu_object_free_zapified(objset_t *, uint64_t, dmu_tx_t *); - -int dmu_write_direct(zio_t *, dmu_buf_impl_t *, abd_t *, dmu_tx_t *); -int dmu_read_abd(dnode_t *, uint64_t, uint64_t, abd_t *, dmu_flags_t); -int dmu_write_abd(dnode_t *, uint64_t, uint64_t, abd_t *, dmu_flags_t, - dmu_tx_t *); -#if defined(_KERNEL) -int dmu_read_uio_direct(dnode_t *, zfs_uio_t *, uint64_t, dmu_flags_t); -int dmu_write_uio_direct(dnode_t *, zfs_uio_t *, uint64_t, dmu_flags_t, - dmu_tx_t *); -#endif - -#ifdef __cplusplus -} -#endif - -#endif /* _SYS_DMU_IMPL_H */ |