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298 lines
7.6 KiB
298 lines
7.6 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (C) International Business Machines Corp., 2000-2004 |
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*/ |
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#ifndef _H_JFS_TXNMGR |
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#define _H_JFS_TXNMGR |
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#include "jfs_logmgr.h" |
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/* |
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* Hide implementation of TxBlock and TxLock |
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*/ |
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#define tid_to_tblock(tid) (&TxBlock[tid]) |
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#define lid_to_tlock(lid) (&TxLock[lid]) |
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/* |
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* transaction block |
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*/ |
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struct tblock { |
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/* |
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* tblock and jbuf_t common area: struct logsyncblk |
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* |
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* the following 5 fields are the same as struct logsyncblk |
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* which is common to tblock and jbuf to form logsynclist |
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*/ |
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u16 xflag; /* tx commit type */ |
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u16 flag; /* tx commit state */ |
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lid_t dummy; /* Must keep structures common */ |
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s32 lsn; /* recovery lsn */ |
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struct list_head synclist; /* logsynclist link */ |
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/* lock management */ |
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struct super_block *sb; /* super block */ |
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lid_t next; /* index of first tlock of tid */ |
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lid_t last; /* index of last tlock of tid */ |
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wait_queue_head_t waitor; /* tids waiting on this tid */ |
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/* log management */ |
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u32 logtid; /* log transaction id */ |
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/* commit management */ |
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struct list_head cqueue; /* commit queue list */ |
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s32 clsn; /* commit lsn */ |
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struct lbuf *bp; |
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s32 pn; /* commit record log page number */ |
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s32 eor; /* commit record eor */ |
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wait_queue_head_t gcwait; /* group commit event list: |
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* ready transactions wait on this |
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* event for group commit completion. |
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*/ |
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union { |
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struct inode *ip; /* inode being deleted */ |
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pxd_t ixpxd; /* pxd of inode extent for created inode */ |
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} u; |
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u32 ino; /* inode number being created */ |
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}; |
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extern struct tblock *TxBlock; /* transaction block table */ |
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/* commit flags: tblk->xflag */ |
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#define COMMIT_SYNC 0x0001 /* synchronous commit */ |
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#define COMMIT_FORCE 0x0002 /* force pageout at end of commit */ |
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#define COMMIT_FLUSH 0x0004 /* init flush at end of commit */ |
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#define COMMIT_MAP 0x00f0 |
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#define COMMIT_PMAP 0x0010 /* update pmap */ |
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#define COMMIT_WMAP 0x0020 /* update wmap */ |
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#define COMMIT_PWMAP 0x0040 /* update pwmap */ |
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#define COMMIT_FREE 0x0f00 |
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#define COMMIT_DELETE 0x0100 /* inode delete */ |
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#define COMMIT_TRUNCATE 0x0200 /* file truncation */ |
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#define COMMIT_CREATE 0x0400 /* inode create */ |
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#define COMMIT_LAZY 0x0800 /* lazy commit */ |
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#define COMMIT_PAGE 0x1000 /* Identifies element as metapage */ |
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#define COMMIT_INODE 0x2000 /* Identifies element as inode */ |
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/* group commit flags tblk->flag: see jfs_logmgr.h */ |
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/* |
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* transaction lock |
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*/ |
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struct tlock { |
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lid_t next; /* 2: index next lockword on tid locklist |
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* next lockword on freelist |
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*/ |
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tid_t tid; /* 2: transaction id holding lock */ |
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u16 flag; /* 2: lock control */ |
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u16 type; /* 2: log type */ |
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struct metapage *mp; /* 4/8: object page buffer locked */ |
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struct inode *ip; /* 4/8: object */ |
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/* (16) */ |
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s16 lock[24]; /* 48: overlay area */ |
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}; /* (64) */ |
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extern struct tlock *TxLock; /* transaction lock table */ |
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/* |
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* tlock flag |
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*/ |
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/* txLock state */ |
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#define tlckPAGELOCK 0x8000 |
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#define tlckINODELOCK 0x4000 |
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#define tlckLINELOCK 0x2000 |
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#define tlckINLINELOCK 0x1000 |
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/* lmLog state */ |
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#define tlckLOG 0x0800 |
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/* updateMap state */ |
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#define tlckUPDATEMAP 0x0080 |
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#define tlckDIRECTORY 0x0040 |
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/* freeLock state */ |
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#define tlckFREELOCK 0x0008 |
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#define tlckWRITEPAGE 0x0004 |
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#define tlckFREEPAGE 0x0002 |
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/* |
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* tlock type |
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*/ |
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#define tlckTYPE 0xfe00 |
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#define tlckINODE 0x8000 |
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#define tlckXTREE 0x4000 |
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#define tlckDTREE 0x2000 |
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#define tlckMAP 0x1000 |
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#define tlckEA 0x0800 |
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#define tlckACL 0x0400 |
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#define tlckDATA 0x0200 |
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#define tlckBTROOT 0x0100 |
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#define tlckOPERATION 0x00ff |
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#define tlckGROW 0x0001 /* file grow */ |
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#define tlckREMOVE 0x0002 /* file delete */ |
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#define tlckTRUNCATE 0x0004 /* file truncate */ |
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#define tlckRELOCATE 0x0008 /* file/directory relocate */ |
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#define tlckENTRY 0x0001 /* directory insert/delete */ |
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#define tlckEXTEND 0x0002 /* directory extend in-line */ |
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#define tlckSPLIT 0x0010 /* splited page */ |
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#define tlckNEW 0x0020 /* new page from split */ |
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#define tlckFREE 0x0040 /* free page */ |
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#define tlckRELINK 0x0080 /* update sibling pointer */ |
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/* |
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* linelock for lmLog() |
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* |
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* note: linelock and its variations are overlaid |
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* at tlock.lock: watch for alignment; |
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*/ |
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struct lv { |
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u8 offset; /* 1: */ |
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u8 length; /* 1: */ |
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}; /* (2) */ |
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#define TLOCKSHORT 20 |
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#define TLOCKLONG 28 |
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struct linelock { |
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lid_t next; /* 2: next linelock */ |
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s8 maxcnt; /* 1: */ |
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s8 index; /* 1: */ |
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u16 flag; /* 2: */ |
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u8 type; /* 1: */ |
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u8 l2linesize; /* 1: log2 of linesize */ |
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/* (8) */ |
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struct lv lv[20]; /* 40: */ |
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}; /* (48) */ |
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#define dt_lock linelock |
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struct xtlock { |
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lid_t next; /* 2: */ |
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s8 maxcnt; /* 1: */ |
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s8 index; /* 1: */ |
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u16 flag; /* 2: */ |
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u8 type; /* 1: */ |
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u8 l2linesize; /* 1: log2 of linesize */ |
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/* (8) */ |
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struct lv header; /* 2: */ |
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struct lv lwm; /* 2: low water mark */ |
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struct lv hwm; /* 2: high water mark */ |
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struct lv twm; /* 2: */ |
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/* (16) */ |
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s32 pxdlock[8]; /* 32: */ |
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}; /* (48) */ |
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/* |
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* maplock for txUpdateMap() |
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* |
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* note: maplock and its variations are overlaid |
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* at tlock.lock/linelock: watch for alignment; |
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* N.B. next field may be set by linelock, and should not |
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* be modified by maplock; |
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* N.B. index of the first pxdlock specifies index of next |
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* free maplock (i.e., number of maplock) in the tlock; |
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*/ |
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struct maplock { |
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lid_t next; /* 2: */ |
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u8 maxcnt; /* 2: */ |
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u8 index; /* 2: next free maplock index */ |
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u16 flag; /* 2: */ |
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u8 type; /* 1: */ |
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u8 count; /* 1: number of pxd/xad */ |
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/* (8) */ |
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pxd_t pxd; /* 8: */ |
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}; /* (16): */ |
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/* maplock flag */ |
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#define mlckALLOC 0x00f0 |
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#define mlckALLOCXADLIST 0x0080 |
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#define mlckALLOCPXDLIST 0x0040 |
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#define mlckALLOCXAD 0x0020 |
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#define mlckALLOCPXD 0x0010 |
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#define mlckFREE 0x000f |
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#define mlckFREEXADLIST 0x0008 |
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#define mlckFREEPXDLIST 0x0004 |
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#define mlckFREEXAD 0x0002 |
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#define mlckFREEPXD 0x0001 |
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#define pxd_lock maplock |
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struct xdlistlock { |
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lid_t next; /* 2: */ |
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u8 maxcnt; /* 2: */ |
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u8 index; /* 2: */ |
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u16 flag; /* 2: */ |
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u8 type; /* 1: */ |
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u8 count; /* 1: number of pxd/xad */ |
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/* (8) */ |
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/* |
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* We need xdlist to be 64 bits (8 bytes), regardless of |
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* whether void * is 32 or 64 bits |
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*/ |
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union { |
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void *_xdlist; /* pxd/xad list */ |
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s64 pad; /* 8: Force 64-bit xdlist size */ |
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} union64; |
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}; /* (16): */ |
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#define xdlist union64._xdlist |
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/* |
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* commit |
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* |
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* parameter to the commit manager routines |
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*/ |
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struct commit { |
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tid_t tid; /* tid = index of tblock */ |
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int flag; /* flags */ |
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struct jfs_log *log; /* log */ |
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struct super_block *sb; /* superblock */ |
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int nip; /* number of entries in iplist */ |
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struct inode **iplist; /* list of pointers to inodes */ |
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/* log record descriptor on 64-bit boundary */ |
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struct lrd lrd; /* : log record descriptor */ |
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}; |
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/* |
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* external declarations |
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*/ |
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extern int jfs_tlocks_low; |
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extern int txInit(void); |
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extern void txExit(void); |
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extern struct tlock *txLock(tid_t, struct inode *, struct metapage *, int); |
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extern struct tlock *txMaplock(tid_t, struct inode *, int); |
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extern int txCommit(tid_t, int, struct inode **, int); |
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extern tid_t txBegin(struct super_block *, int); |
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extern void txBeginAnon(struct super_block *); |
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extern void txEnd(tid_t); |
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extern void txAbort(tid_t, int); |
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extern struct linelock *txLinelock(struct linelock *); |
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extern void txFreeMap(struct inode *, struct maplock *, struct tblock *, int); |
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extern void txEA(tid_t, struct inode *, dxd_t *, dxd_t *); |
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extern void txFreelock(struct inode *); |
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extern int lmLog(struct jfs_log *, struct tblock *, struct lrd *, |
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struct tlock *); |
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extern void txQuiesce(struct super_block *); |
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extern void txResume(struct super_block *); |
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extern void txLazyUnlock(struct tblock *); |
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extern int jfs_lazycommit(void *); |
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extern int jfs_sync(void *); |
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#endif /* _H_JFS_TXNMGR */
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