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Diffstat (limited to 'include/sys/zvol_impl.h')
| -rw-r--r-- | include/sys/zvol_impl.h | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/include/sys/zvol_impl.h b/include/sys/zvol_impl.h deleted file mode 100644 index 5422e66832c0..000000000000 --- a/include/sys/zvol_impl.h +++ /dev/null @@ -1,143 +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 (c) 2024, 2025, Klara, Inc. - */ - -#ifndef _SYS_ZVOL_IMPL_H -#define _SYS_ZVOL_IMPL_H - -#include <sys/zfs_context.h> - -#define ZVOL_RDONLY (1<<0) /* zvol is readonly (writes rejected) */ -#define ZVOL_WRITTEN_TO (1<<1) /* zvol has been written to (needs flush) */ -#define ZVOL_EXCL (1<<2) /* zvol has O_EXCL client right now */ -#define ZVOL_REMOVING (1<<3) /* zvol waiting to remove minor */ - -/* - * The in-core state of each volume. - */ -typedef struct zvol_state { - char zv_name[MAXNAMELEN]; /* name */ - uint64_t zv_volsize; /* advertised space */ - uint64_t zv_volblocksize; /* volume block size */ - objset_t *zv_objset; /* objset handle */ - uint32_t zv_flags; /* ZVOL_* flags */ - uint32_t zv_open_count; /* open counts */ - uint32_t zv_changed; /* disk changed */ - uint32_t zv_volmode; /* volmode */ - zilog_t *zv_zilog; /* ZIL handle */ - zfs_rangelock_t zv_rangelock; /* for range locking */ - dnode_t *zv_dn; /* dnode hold */ - dataset_kstats_t zv_kstat; /* zvol kstats */ - list_node_t zv_next; /* next zvol_state_t linkage */ - uint64_t zv_hash; /* name hash */ - struct hlist_node zv_hlink; /* hash link */ - kmutex_t zv_state_lock; /* protects zvol_state_t */ - atomic_t zv_suspend_ref; /* refcount for suspend */ - krwlock_t zv_suspend_lock; /* suspend lock */ - kcondvar_t zv_removing_cv; /* ready to remove minor */ - list_node_t zv_remove_node; /* node on removal list */ - struct zvol_state_os *zv_zso; /* private platform state */ - boolean_t zv_threading; /* volthreading property */ -} zvol_state_t; - -/* - * zvol taskqs - */ -typedef struct zv_taskq { - uint_t tqs_cnt; - taskq_t **tqs_taskq; -} zv_taskq_t; - -typedef struct zv_request_stack { - zvol_state_t *zv; - struct bio *bio; -#ifdef __linux__ - struct request *rq; -#endif -} zv_request_t; - -typedef struct zv_request_task { - zv_request_t zvr; - taskq_ent_t ent; -} zv_request_task_t; - -/* - * Switch taskq at multiple of 512 MB offset. This can be set to a lower value - * to utilize more threads for small files but may affect prefetch hits. - */ -#define ZVOL_TASKQ_OFFSET_SHIFT 29 - -extern krwlock_t zvol_state_lock; -#define ZVOL_HT_SIZE 1024 -extern struct hlist_head *zvol_htable; -#define ZVOL_HT_HEAD(hash) (&zvol_htable[(hash) & (ZVOL_HT_SIZE-1)]) -extern zil_replay_func_t *const zvol_replay_vector[TX_MAX_TYPE]; - -extern unsigned int zvol_inhibit_dev; -extern unsigned int zvol_prefetch_bytes; -extern unsigned int zvol_volmode; -extern unsigned int zvol_threads; -extern unsigned int zvol_num_taskqs; -extern unsigned int zvol_request_sync; -extern zv_taskq_t zvol_taskqs; - -/* - * platform independent functions exported to platform code - */ -zvol_state_t *zvol_find_by_name_hash(const char *name, - uint64_t hash, int mode); -int zvol_first_open(zvol_state_t *zv, boolean_t readonly); -uint64_t zvol_name_hash(const char *name); -void zvol_last_close(zvol_state_t *zv); -void zvol_insert(zvol_state_t *zv); -void zvol_log_truncate(zvol_state_t *zv, dmu_tx_t *tx, uint64_t off, - uint64_t len); -void zvol_log_write(zvol_state_t *zv, dmu_tx_t *tx, uint64_t offset, - uint64_t size, boolean_t commit); -int zvol_get_data(void *arg, uint64_t arg2, lr_write_t *lr, char *buf, - struct lwb *lwb, zio_t *zio); -int zvol_init_impl(void); -void zvol_fini_impl(void); -void zvol_wait_close(zvol_state_t *zv); -int zvol_clone_range(zvol_state_handle_t *, uint64_t, - zvol_state_handle_t *, uint64_t, uint64_t); -void zvol_log_clone_range(zilog_t *zilog, dmu_tx_t *tx, int txtype, - uint64_t off, uint64_t len, uint64_t blksz, const blkptr_t *bps, - size_t nbps); -zv_request_task_t *zv_request_task_create(zv_request_t zvr); -void zv_request_task_free(zv_request_task_t *task); - -/* - * platform dependent functions exported to platform independent code - */ -void zvol_os_free(zvol_state_t *zv); -int zvol_os_rename_minor(zvol_state_t *zv, const char *newname); -int zvol_os_create_minor(const char *name); -int zvol_os_update_volsize(zvol_state_t *zv, uint64_t volsize); -boolean_t zvol_os_is_zvol(const char *path); -void zvol_os_remove_minor(zvol_state_t *zv); -void zvol_os_set_disk_ro(zvol_state_t *zv, int flags); -void zvol_os_set_capacity(zvol_state_t *zv, uint64_t capacity); - -#endif |