sys/dev/raidframe/rf_dagdegwr.h

   1 /*      $NetBSD$        */
   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_ */