| 1 | /* $NetBSD: rf_dagflags.h,v 1.5 2005/12/11 12:23:37 christos Exp $ */ |
| 2 | /* |
| 3 | * Copyright (c) 1995 Carnegie-Mellon University. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Author: Mark Holland |
| 7 | * |
| 8 | * Permission to use, copy, modify and distribute this software and |
| 9 | * its documentation is hereby granted, provided that both the copyright |
| 10 | * notice and this permission notice appear in all copies of the |
| 11 | * software, derivative works or modified versions, and any portions |
| 12 | * thereof, and that both notices appear in supporting documentation. |
| 13 | * |
| 14 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| 15 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND |
| 16 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| 17 | * |
| 18 | * Carnegie Mellon requests users of this software to return to |
| 19 | * |
| 20 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| 21 | * School of Computer Science |
| 22 | * Carnegie Mellon University |
| 23 | * Pittsburgh PA 15213-3890 |
| 24 | * |
| 25 | * any improvements or extensions that they make and grant Carnegie the |
| 26 | * rights to redistribute these changes. |
| 27 | */ |
| 28 | |
| 29 | /************************************************************************************** |
| 30 | * |
| 31 | * dagflags.h -- flags that can be given to DoAccess |
| 32 | * I pulled these out of dag.h because routines that call DoAccess may need these flags, |
| 33 | * but certainly do not need the declarations related to the DAG data structures. |
| 34 | * |
| 35 | **************************************************************************************/ |
| 36 | |
| 37 | |
| 38 | #ifndef _RF__RF_DAGFLAGS_H_ |
| 39 | #define _RF__RF_DAGFLAGS_H_ |
| 40 | |
| 41 | /* |
| 42 | * Bitmasks for the "flags" parameter (RF_RaidAccessFlags_t) used |
| 43 | * by DoAccess, SelectAlgorithm, and the DAG creation routines. |
| 44 | * |
| 45 | * If USE_DAG or USE_ASM is specified, neither the DAG nor the ASM |
| 46 | * will be modified, which means that you can't SUPRESS if you |
| 47 | * specify USE_DAG. |
| 48 | */ |
| 49 | |
| 50 | #define RF_DAG_FLAGS_NONE 0 /* no flags */ |
| 51 | #define RF_DAG_SUPPRESS_LOCKS (1<<0) /* supress all stripe locks in |
| 52 | * the DAG */ |
| 53 | #define RF_DAG_NONBLOCKING_IO (1<<3) /* cause DoAccess to be |
| 54 | * non-blocking */ |
| 55 | #define RF_DAG_ACCESS_COMPLETE (1<<4) /* the access is complete */ |
| 56 | #define RF_DAG_DISPATCH_RETURNED (1<<5) /* used to handle the case |
| 57 | * where the dag invokes no |
| 58 | * I/O */ |
| 59 | |
| 60 | #endif /* !_RF__RF_DAGFLAGS_H_ */ |
| 61 | |