0ff2145648
used in the event that we can't malloc a buffer of the appropriate size in the traditional way. rf_AllocIOBuffer() and rf_FreeIOBuffer() deal with allocating/freeing these structures. These buffers are stored in a list on the 'iobuf' list. iobuf_count keeps track of how many buffers are available, and numEmergencyBuffers is the effective "high-water" mark for the freelist. The buffers allocated by rf_AllocIOBuffer() are stripe-unit sized, which is the maximum size requested by any of the callers. Add an iobufs entry to RF_DagHeader_s. Use it for keeping track of buffers that get allocated from the free-list. Add a "generic list" pool (VoidPointerListElement Pool) for elements used to maintain a list of allocated memory. [It is somewhat less than ideal to add another little pool to handle this...] Teach rf_AllocBuffer() to use the new rf_AllocIOBuffer(). Modify other Mallocs to use rf_AllocIOBuffer(), and to update dag_h->iobufs as appropriate. Update rf_FreeDAG() to handle cleanup of dag_h->iobufs. While here, add some missing pool_destroy() calls for a number of pools. With these changes, it should (in theory) be possible to swap on RAID 5 sets again. That said, I've not had any success there yet -- but the last issue I saw at least wasn't in RAIDframe. :-} [There is room for this code to become a bit more consise, but I wanted to do a checkpoint here with something known to work :) ]
71 lines
2.9 KiB
C
71 lines
2.9 KiB
C
/* $NetBSD: rf_map.h,v 1.11 2004/03/20 04:22:05 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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/* rf_map.h */
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#ifndef _RF__RF_MAP_H_
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#define _RF__RF_MAP_H_
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#include <dev/raidframe/raidframevar.h>
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#include "rf_alloclist.h"
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#include "rf_raid.h"
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/* mapping structure allocation and free routines */
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RF_AccessStripeMapHeader_t *rf_MapAccess(RF_Raid_t *, RF_RaidAddr_t,
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RF_SectorCount_t, caddr_t, int);
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void rf_MarkFailuresInASMList(RF_Raid_t *, RF_AccessStripeMapHeader_t *);
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int rf_ConfigureMapModule(RF_ShutdownList_t **);
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RF_AccessStripeMapHeader_t *rf_AllocAccessStripeMapHeader(void);
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void rf_FreeAccessStripeMapHeader(RF_AccessStripeMapHeader_t *);
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RF_PhysDiskAddr_t *rf_AllocPhysDiskAddr(void);
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RF_PhysDiskAddr_t *rf_AllocPDAList(int);
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void rf_FreePhysDiskAddr(RF_PhysDiskAddr_t *);
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RF_AccessStripeMap_t *rf_AllocASMList(int);
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void rf_FreeAccessStripeMap(RF_AccessStripeMapHeader_t *);
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int rf_CheckStripeForFailures(RF_Raid_t *, RF_AccessStripeMap_t *);
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int rf_NumFailedDataUnitsInStripe(RF_Raid_t *, RF_AccessStripeMap_t *);
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void rf_PrintAccessStripeMap(RF_AccessStripeMapHeader_t *);
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void rf_PrintFullAccessStripeMap(RF_AccessStripeMapHeader_t *, int);
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void rf_PrintRaidAddressInfo(RF_Raid_t *, RF_RaidAddr_t, RF_SectorCount_t);
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void rf_ASMParityAdjust(RF_PhysDiskAddr_t *, RF_StripeNum_t, RF_SectorNum_t,
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RF_RaidLayout_t *, RF_AccessStripeMap_t *);
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void rf_ASMCheckStatus(RF_Raid_t *, RF_PhysDiskAddr_t *, RF_AccessStripeMap_t *,
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RF_RaidDisk_t *, int);
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RF_VoidFunctionPointerListElem_t *rf_AllocVFPListElem(void);
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void rf_FreeVFPListElem(RF_VoidFunctionPointerListElem_t *);
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RF_VoidPointerListElem_t *rf_AllocVPListElem(void);
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void rf_FreeVPListElem(RF_VoidPointerListElem_t *);
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RF_ASMHeaderListElem_t *rf_AllocASMHeaderListElem(void);
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void rf_FreeASMHeaderListElem(RF_ASMHeaderListElem_t *);
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RF_FailedStripe_t *rf_AllocFailedStripeStruct(void);
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void rf_FreeFailedStripeStruct(RF_FailedStripe_t *);
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#endif /* !_RF__RF_MAP_H_ */
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