diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h new file mode 100644 index 000000000000..89f4799b57fe --- /dev/null +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h @@ -0,0 +1,134 @@ +/* + * 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 2006 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _SYS_DMU_TX_H +#define _SYS_DMU_TX_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/dmu.h> +#include <sys/txg.h> +#include <sys/refcount.h> + +#ifdef __cplusplus +extern "C" { +#endif + +struct dmu_buf_impl; +struct dmu_tx_hold; +struct dnode_link; +struct dsl_pool; +struct dnode; +struct dsl_dir; + +struct dmu_tx { + /* + * No synchronization is needed because a tx can only be handled + * by one thread. + */ + list_t tx_holds; /* list of dmu_tx_hold_t */ + objset_t *tx_objset; + struct dsl_dir *tx_dir; + struct dsl_pool *tx_pool; + uint64_t tx_txg; + uint64_t tx_lastsnap_txg; + uint64_t tx_lasttried_txg; + txg_handle_t tx_txgh; + void *tx_tempreserve_cookie; + struct dmu_tx_hold *tx_needassign_txh; + uint8_t tx_anyobj; + int tx_err; +#ifdef ZFS_DEBUG + uint64_t tx_space_towrite; + uint64_t tx_space_tofree; + uint64_t tx_space_tooverwrite; + refcount_t tx_space_written; + refcount_t tx_space_freed; +#endif +}; + +enum dmu_tx_hold_type { + THT_NEWOBJECT, + THT_WRITE, + THT_BONUS, + THT_FREE, + THT_ZAP, + THT_SPACE, + THT_NUMTYPES +}; + +typedef struct dmu_tx_hold { + dmu_tx_t *txh_tx; + list_node_t txh_node; + struct dnode *txh_dnode; + uint64_t txh_space_towrite; + uint64_t txh_space_tofree; + uint64_t txh_space_tooverwrite; +#ifdef ZFS_DEBUG + enum dmu_tx_hold_type txh_type; + uint64_t txh_arg1; + uint64_t txh_arg2; +#endif +} dmu_tx_hold_t; + + +/* + * These routines are defined in dmu.h, and are called by the user. + */ +dmu_tx_t *dmu_tx_create(objset_t *dd); +int dmu_tx_assign(dmu_tx_t *tx, uint64_t txg_how); +void dmu_tx_commit(dmu_tx_t *tx); +void dmu_tx_abort(dmu_tx_t *tx); +uint64_t dmu_tx_get_txg(dmu_tx_t *tx); +void dmu_tx_wait(dmu_tx_t *tx); + +/* + * These routines are defined in dmu_spa.h, and are called by the SPA. + */ +extern dmu_tx_t *dmu_tx_create_assigned(struct dsl_pool *dp, uint64_t txg); + +/* + * These routines are only called by the DMU. + */ +dmu_tx_t *dmu_tx_create_dd(dsl_dir_t *dd); +int dmu_tx_is_syncing(dmu_tx_t *tx); +int dmu_tx_private_ok(dmu_tx_t *tx); +void dmu_tx_add_new_object(dmu_tx_t *tx, objset_t *os, uint64_t object); +void dmu_tx_willuse_space(dmu_tx_t *tx, int64_t delta); +void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db); +int dmu_tx_holds(dmu_tx_t *tx, uint64_t object); +void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space); + +#ifdef ZFS_DEBUG +#define DMU_TX_DIRTY_BUF(tx, db) dmu_tx_dirty_buf(tx, db) +#else +#define DMU_TX_DIRTY_BUF(tx, db) +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_DMU_TX_H */ |