1/* $NetBSD: rf_dagdegwr.h,v 1.6 2006/05/14 21:45:00 elad Exp $ */
2/*
3 * Copyright (c) 1995 Carnegie-Mellon University.
4 * All rights reserved.
5 *
6 * Author: Mark Holland, Daniel Stodolsky, William V. Courtright II
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#ifndef _RF__RF_DAGDEGWR_H_
31#define _RF__RF_DAGDEGWR_H_
32
33/* degraded write DAG creation routines */
34void rf_CreateDegradedWriteDAG(RF_Raid_t * raidPtr,
35 RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h, void *bp,
36 RF_RaidAccessFlags_t flags, RF_AllocListElem_t * allocList);
37
38void rf_CommonCreateSimpleDegradedWriteDAG(RF_Raid_t * raidPtr,
39 RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h, void *bp,
40 RF_RaidAccessFlags_t flags, RF_AllocListElem_t * allocList,
41 int nfaults, int (*redFunc) (RF_DagNode_t *), int allowBufferRecycle);
42
43void rf_WriteGenerateFailedAccessASMs(RF_Raid_t * raidPtr,
44 RF_AccessStripeMap_t * asmap, RF_PhysDiskAddr_t ** pdap,
45 int *nNodep, RF_PhysDiskAddr_t ** pqpdap,
46 int *nPQNodep, RF_AllocListElem_t * allocList);
47
48void rf_DoubleDegSmallWrite(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap,
49 RF_DagHeader_t * dag_h, void *bp, RF_RaidAccessFlags_t flags,
50 RF_AllocListElem_t * allocList, const char *redundantReadNodeName,
51 const char *redundantWriteNodeName, const char *recoveryNodeName,
52 int (*recovFunc) (RF_DagNode_t *));
53
54#endif /* !_RF__RF_DAGDEGWR_H_ */
55