144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _ZIO_IMPL_H
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#define _ZIO_IMPL_H
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#include <sys/zfs_context.h>
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#include <sys/zio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* I/O Groups: pipeline stage definitions.
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*/
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typedef enum zio_stage {
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ZIO_STAGE_OPEN = 0, /* RWFCI */
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ZIO_STAGE_ISSUE_ASYNC, /* -W--- */
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ZIO_STAGE_READ_BP_INIT, /* R---- */
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ZIO_STAGE_WRITE_BP_INIT, /* -W--- */
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ZIO_STAGE_CHECKSUM_GENERATE, /* -W--- */
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ZIO_STAGE_GANG_ASSEMBLE, /* RWFC- */
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ZIO_STAGE_GANG_ISSUE, /* RWFC- */
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ZIO_STAGE_DVA_ALLOCATE, /* -W--- */
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ZIO_STAGE_DVA_FREE, /* --F-- */
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ZIO_STAGE_DVA_CLAIM, /* ---C- */
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ZIO_STAGE_READY, /* RWFCI */
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ZIO_STAGE_VDEV_IO_START, /* RW--I */
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ZIO_STAGE_VDEV_IO_DONE, /* RW--I */
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ZIO_STAGE_VDEV_IO_ASSESS, /* RW--I */
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ZIO_STAGE_CHECKSUM_VERIFY, /* R---- */
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ZIO_STAGE_DONE, /* RWFCI */
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ZIO_STAGES
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} zio_stage_t;
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#define ZIO_INTERLOCK_STAGES \
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((1U << ZIO_STAGE_READY) | \
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(1U << ZIO_STAGE_DONE))
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#define ZIO_INTERLOCK_PIPELINE \
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ZIO_INTERLOCK_STAGES
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#define ZIO_VDEV_IO_STAGES \
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((1U << ZIO_STAGE_VDEV_IO_START) | \
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(1U << ZIO_STAGE_VDEV_IO_DONE) | \
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(1U << ZIO_STAGE_VDEV_IO_ASSESS))
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#define ZIO_VDEV_CHILD_PIPELINE \
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(ZIO_VDEV_IO_STAGES | \
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(1U << ZIO_STAGE_DONE))
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#define ZIO_READ_COMMON_STAGES \
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(ZIO_INTERLOCK_STAGES | \
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ZIO_VDEV_IO_STAGES | \
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(1U << ZIO_STAGE_CHECKSUM_VERIFY))
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#define ZIO_READ_PHYS_PIPELINE \
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ZIO_READ_COMMON_STAGES
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#define ZIO_READ_PIPELINE \
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(ZIO_READ_COMMON_STAGES | \
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(1U << ZIO_STAGE_READ_BP_INIT))
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#define ZIO_WRITE_COMMON_STAGES \
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(ZIO_INTERLOCK_STAGES | \
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ZIO_VDEV_IO_STAGES | \
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(1U << ZIO_STAGE_ISSUE_ASYNC) | \
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(1U << ZIO_STAGE_CHECKSUM_GENERATE))
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#define ZIO_WRITE_PHYS_PIPELINE \
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ZIO_WRITE_COMMON_STAGES
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#define ZIO_REWRITE_PIPELINE \
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(ZIO_WRITE_COMMON_STAGES | \
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(1U << ZIO_STAGE_WRITE_BP_INIT))
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#define ZIO_WRITE_PIPELINE \
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(ZIO_WRITE_COMMON_STAGES | \
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(1U << ZIO_STAGE_WRITE_BP_INIT) | \
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(1U << ZIO_STAGE_DVA_ALLOCATE))
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#define ZIO_GANG_STAGES \
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((1U << ZIO_STAGE_GANG_ASSEMBLE) | \
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(1U << ZIO_STAGE_GANG_ISSUE))
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#define ZIO_FREE_PIPELINE \
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(ZIO_INTERLOCK_STAGES | \
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(1U << ZIO_STAGE_DVA_FREE))
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#define ZIO_CLAIM_PIPELINE \
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(ZIO_INTERLOCK_STAGES | \
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(1U << ZIO_STAGE_DVA_CLAIM))
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#define ZIO_IOCTL_PIPELINE \
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(ZIO_INTERLOCK_STAGES | \
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(1U << ZIO_STAGE_VDEV_IO_START) | \
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(1U << ZIO_STAGE_VDEV_IO_ASSESS))
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#define ZIO_CONFIG_LOCK_BLOCKING_STAGES \
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((1U << ZIO_STAGE_VDEV_IO_START) | \
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(1U << ZIO_STAGE_DVA_ALLOCATE) | \
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(1U << ZIO_STAGE_DVA_CLAIM))
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extern void zio_inject_init(void);
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extern void zio_inject_fini(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ZIO_IMPL_H */
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