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 */
34 void 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 
38 void 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 
43 void 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 
48 void 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