1eecf8e491
out-dated comments, and other unneeded stuff. This helps prepare for cleaning up the rest of the code, and adding new functionality. No functional changes to the kernel code in this commit.
60 lines
2.5 KiB
C
60 lines
2.5 KiB
C
/* $NetBSD: rf_dagflags.h,v 1.2 1999/01/26 02:33:53 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/**************************************************************************************
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*
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* dagflags.h -- flags that can be given to DoAccess
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* I pulled these out of dag.h because routines that call DoAccess may need these flags,
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* but certainly do not need the declarations related to the DAG data structures.
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*
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**************************************************************************************/
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#ifndef _RF__RF_DAGFLAGS_H_
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#define _RF__RF_DAGFLAGS_H_
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/*
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* Bitmasks for the "flags" parameter (RF_RaidAccessFlags_t) used
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* by DoAccess, SelectAlgorithm, and the DAG creation routines.
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*
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* If USE_DAG or USE_ASM is specified, neither the DAG nor the ASM
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* will be modified, which means that you can't SUPRESS if you
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* specify USE_DAG.
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*/
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#define RF_DAG_FLAGS_NONE 0 /* no flags */
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#define RF_DAG_SUPPRESS_LOCKS (1<<0) /* supress all stripe locks in the DAG */
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#define RF_DAG_RETURN_ASM (1<<1) /* create an ASM and return it instead of freeing it */
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#define RF_DAG_RETURN_DAG (1<<2) /* create a DAG and return it instead of freeing it */
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#define RF_DAG_NONBLOCKING_IO (1<<3) /* cause DoAccess to be non-blocking */
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#define RF_DAG_ACCESS_COMPLETE (1<<4) /* the access is complete */
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#define RF_DAG_DISPATCH_RETURNED (1<<5) /* used to handle the case where the dag invokes no I/O */
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#define RF_DAG_TEST_ACCESS (1<<6) /* this access came through rf_ioctl instead of rf_strategy */
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#endif /* !_RF__RF_DAGFLAGS_H_ */
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