diff options
Diffstat (limited to 'uts/common/fs/zfs/sys/zio_impl.h')
| -rw-r--r-- | uts/common/fs/zfs/sys/zio_impl.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/sys/zio_impl.h b/uts/common/fs/zfs/sys/zio_impl.h new file mode 100644 index 000000000000..d90bd8bd5921 --- /dev/null +++ b/uts/common/fs/zfs/sys/zio_impl.h @@ -0,0 +1,175 @@ +/* + * 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 2009 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _ZIO_IMPL_H +#define _ZIO_IMPL_H + +#include <sys/zfs_context.h> +#include <sys/zio.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * zio pipeline stage definitions + */ +enum zio_stage { + ZIO_STAGE_OPEN = 1 << 0, /* RWFCI */ + + ZIO_STAGE_READ_BP_INIT = 1 << 1, /* R---- */ + ZIO_STAGE_FREE_BP_INIT = 1 << 2, /* --F-- */ + ZIO_STAGE_ISSUE_ASYNC = 1 << 3, /* RWF-- */ + ZIO_STAGE_WRITE_BP_INIT = 1 << 4, /* -W--- */ + + ZIO_STAGE_CHECKSUM_GENERATE = 1 << 5, /* -W--- */ + + ZIO_STAGE_DDT_READ_START = 1 << 6, /* R---- */ + ZIO_STAGE_DDT_READ_DONE = 1 << 7, /* R---- */ + ZIO_STAGE_DDT_WRITE = 1 << 8, /* -W--- */ + ZIO_STAGE_DDT_FREE = 1 << 9, /* --F-- */ + + ZIO_STAGE_GANG_ASSEMBLE = 1 << 10, /* RWFC- */ + ZIO_STAGE_GANG_ISSUE = 1 << 11, /* RWFC- */ + + ZIO_STAGE_DVA_ALLOCATE = 1 << 12, /* -W--- */ + ZIO_STAGE_DVA_FREE = 1 << 13, /* --F-- */ + ZIO_STAGE_DVA_CLAIM = 1 << 14, /* ---C- */ + + ZIO_STAGE_READY = 1 << 15, /* RWFCI */ + + ZIO_STAGE_VDEV_IO_START = 1 << 16, /* RW--I */ + ZIO_STAGE_VDEV_IO_DONE = 1 << 17, /* RW--I */ + ZIO_STAGE_VDEV_IO_ASSESS = 1 << 18, /* RW--I */ + + ZIO_STAGE_CHECKSUM_VERIFY = 1 << 19, /* R---- */ + + ZIO_STAGE_DONE = 1 << 20 /* RWFCI */ +}; + +#define ZIO_INTERLOCK_STAGES \ + (ZIO_STAGE_READY | \ + ZIO_STAGE_DONE) + +#define ZIO_INTERLOCK_PIPELINE \ + ZIO_INTERLOCK_STAGES + +#define ZIO_VDEV_IO_STAGES \ + (ZIO_STAGE_VDEV_IO_START | \ + ZIO_STAGE_VDEV_IO_DONE | \ + ZIO_STAGE_VDEV_IO_ASSESS) + +#define ZIO_VDEV_CHILD_PIPELINE \ + (ZIO_VDEV_IO_STAGES | \ + ZIO_STAGE_DONE) + +#define ZIO_READ_COMMON_STAGES \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_VDEV_IO_STAGES | \ + ZIO_STAGE_CHECKSUM_VERIFY) + +#define ZIO_READ_PHYS_PIPELINE \ + ZIO_READ_COMMON_STAGES + +#define ZIO_READ_PIPELINE \ + (ZIO_READ_COMMON_STAGES | \ + ZIO_STAGE_READ_BP_INIT) + +#define ZIO_DDT_CHILD_READ_PIPELINE \ + ZIO_READ_COMMON_STAGES + +#define ZIO_DDT_READ_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_STAGE_READ_BP_INIT | \ + ZIO_STAGE_DDT_READ_START | \ + ZIO_STAGE_DDT_READ_DONE) + +#define ZIO_WRITE_COMMON_STAGES \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_VDEV_IO_STAGES | \ + ZIO_STAGE_ISSUE_ASYNC | \ + ZIO_STAGE_CHECKSUM_GENERATE) + +#define ZIO_WRITE_PHYS_PIPELINE \ + ZIO_WRITE_COMMON_STAGES + +#define ZIO_REWRITE_PIPELINE \ + (ZIO_WRITE_COMMON_STAGES | \ + ZIO_STAGE_WRITE_BP_INIT) + +#define ZIO_WRITE_PIPELINE \ + (ZIO_WRITE_COMMON_STAGES | \ + ZIO_STAGE_WRITE_BP_INIT | \ + ZIO_STAGE_DVA_ALLOCATE) + +#define ZIO_DDT_CHILD_WRITE_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_VDEV_IO_STAGES | \ + ZIO_STAGE_DVA_ALLOCATE) + +#define ZIO_DDT_WRITE_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_STAGE_ISSUE_ASYNC | \ + ZIO_STAGE_WRITE_BP_INIT | \ + ZIO_STAGE_CHECKSUM_GENERATE | \ + ZIO_STAGE_DDT_WRITE) + +#define ZIO_GANG_STAGES \ + (ZIO_STAGE_GANG_ASSEMBLE | \ + ZIO_STAGE_GANG_ISSUE) + +#define ZIO_FREE_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_STAGE_FREE_BP_INIT | \ + ZIO_STAGE_DVA_FREE) + +#define ZIO_DDT_FREE_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_STAGE_FREE_BP_INIT | \ + ZIO_STAGE_ISSUE_ASYNC | \ + ZIO_STAGE_DDT_FREE) + +#define ZIO_CLAIM_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_STAGE_DVA_CLAIM) + +#define ZIO_IOCTL_PIPELINE \ + (ZIO_INTERLOCK_STAGES | \ + ZIO_STAGE_VDEV_IO_START | \ + ZIO_STAGE_VDEV_IO_ASSESS) + +#define ZIO_BLOCKING_STAGES \ + (ZIO_STAGE_DVA_ALLOCATE | \ + ZIO_STAGE_DVA_CLAIM | \ + ZIO_STAGE_VDEV_IO_START) + +extern void zio_inject_init(void); +extern void zio_inject_fini(void); + +#ifdef __cplusplus +} +#endif + +#endif /* _ZIO_IMPL_H */ |