aboutsummaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_trans.h
blob: 0f333fba187ca547be8eec04402a431fb3699978 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
/*
 * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */
#ifndef	__XFS_TRANS_H__
#define	__XFS_TRANS_H__

/*
 * This is the structure written in the log at the head of
 * every transaction. It identifies the type and id of the
 * transaction, and contains the number of items logged by
 * the transaction so we know how many to expect during recovery.
 *
 * Do not change the below structure without redoing the code in
 * xlog_recover_add_to_trans() and xlog_recover_add_to_cont_trans().
 */
typedef struct xfs_trans_header {
	uint		th_magic;		/* magic number */
	uint		th_type;		/* transaction type */
	__int32_t	th_tid;			/* transaction id (unused) */
	uint		th_num_items;		/* num items logged by trans */
} xfs_trans_header_t;

#define	XFS_TRANS_HEADER_MAGIC	0x5452414e	/* TRAN */

/*
 * Log item types.
 */
#define	XFS_LI_5_3_BUF		0x1234	/* v1 bufs, 1-block inode buffers */
#define	XFS_LI_5_3_INODE	0x1235	/* 1-block inode buffers */
#define	XFS_LI_EFI		0x1236
#define	XFS_LI_EFD		0x1237
#define	XFS_LI_IUNLINK		0x1238
#define	XFS_LI_6_1_INODE	0x1239	/* 4K non-aligned inode bufs */
#define	XFS_LI_6_1_BUF		0x123a	/* v1, 4K inode buffers */
#define	XFS_LI_INODE		0x123b	/* aligned ino chunks, var-size ibufs */
#define	XFS_LI_BUF		0x123c	/* v2 bufs, variable sized inode bufs */
#define	XFS_LI_DQUOT		0x123d
#define	XFS_LI_QUOTAOFF		0x123e

/*
 * Transaction types.  Used to distinguish types of buffers.
 */
#define XFS_TRANS_SETATTR_NOT_SIZE	1
#define XFS_TRANS_SETATTR_SIZE		2
#define XFS_TRANS_INACTIVE		3
#define XFS_TRANS_CREATE		4
#define XFS_TRANS_CREATE_TRUNC		5
#define XFS_TRANS_TRUNCATE_FILE		6
#define XFS_TRANS_REMOVE		7
#define XFS_TRANS_LINK			8
#define XFS_TRANS_RENAME		9
#define XFS_TRANS_MKDIR			10
#define XFS_TRANS_RMDIR			11
#define XFS_TRANS_SYMLINK		12
#define XFS_TRANS_SET_DMATTRS		13
#define XFS_TRANS_GROWFS		14
#define XFS_TRANS_STRAT_WRITE		15
#define XFS_TRANS_DIOSTRAT		16
#define	XFS_TRANS_WRITE_SYNC		17
#define	XFS_TRANS_WRITEID		18
#define	XFS_TRANS_ADDAFORK		19
#define	XFS_TRANS_ATTRINVAL		20
#define	XFS_TRANS_ATRUNCATE		21
#define	XFS_TRANS_ATTR_SET		22
#define	XFS_TRANS_ATTR_RM		23
#define	XFS_TRANS_ATTR_FLAG		24
#define	XFS_TRANS_CLEAR_AGI_BUCKET	25
#define XFS_TRANS_QM_SBCHANGE		26
/*
 * Dummy entries since we use the transaction type to index into the
 * trans_type[] in xlog_recover_print_trans_head()
 */
#define XFS_TRANS_DUMMY1		27
#define XFS_TRANS_DUMMY2		28
#define XFS_TRANS_QM_QUOTAOFF		29
#define XFS_TRANS_QM_DQALLOC		30
#define XFS_TRANS_QM_SETQLIM		31
#define XFS_TRANS_QM_DQCLUSTER		32
#define XFS_TRANS_QM_QINOCREATE		33
#define XFS_TRANS_QM_QUOTAOFF_END	34
#define XFS_TRANS_SB_UNIT		35
#define XFS_TRANS_FSYNC_TS		36
#define	XFS_TRANS_GROWFSRT_ALLOC	37
#define	XFS_TRANS_GROWFSRT_ZERO		38
#define	XFS_TRANS_GROWFSRT_FREE		39
#define	XFS_TRANS_SWAPEXT		40
#define	XFS_TRANS_TYPE_MAX		40
/* new transaction types need to be reflected in xfs_logprint(8) */


#ifdef __KERNEL__
struct xfs_buf;
struct xfs_buftarg;
struct xfs_efd_log_item;
struct xfs_efi_log_item;
struct xfs_inode;
struct xfs_item_ops;
struct xfs_log_iovec;
struct xfs_log_item;
struct xfs_log_item_desc;
struct xfs_mount;
struct xfs_trans;
struct xfs_dquot_acct;

typedef struct xfs_ail_entry {
	struct xfs_log_item	*ail_forw;	/* AIL forw pointer */
	struct xfs_log_item	*ail_back;	/* AIL back pointer */
} xfs_ail_entry_t;

typedef struct xfs_log_item {
	xfs_ail_entry_t			li_ail;		/* AIL pointers */
	xfs_lsn_t			li_lsn;		/* last on-disk lsn */
	struct xfs_log_item_desc	*li_desc;	/* ptr to current desc*/
	struct xfs_mount		*li_mountp;	/* ptr to fs mount */
	uint				li_type;	/* item type */
	uint				li_flags;	/* misc flags */
	struct xfs_log_item		*li_bio_list;	/* buffer item list */
	void				(*li_cb)(struct xfs_buf *,
						 struct xfs_log_item *);
							/* buffer item iodone */
							/* callback func */
	struct xfs_item_ops		*li_ops;	/* function list */
} xfs_log_item_t;

#define	XFS_LI_IN_AIL	0x1
#define XFS_LI_ABORTED	0x2

typedef struct xfs_item_ops {
	uint (*iop_size)(xfs_log_item_t *);
	void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
	void (*iop_pin)(xfs_log_item_t *);
	void (*iop_unpin)(xfs_log_item_t *, int);
	void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
	uint (*iop_trylock)(xfs_log_item_t *);
	void (*iop_unlock)(xfs_log_item_t *);
	xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
	void (*iop_push)(xfs_log_item_t *);
	void (*iop_abort)(xfs_log_item_t *);
	void (*iop_pushbuf)(xfs_log_item_t *);
	void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
} xfs_item_ops_t;

#define IOP_SIZE(ip)		(*(ip)->li_ops->iop_size)(ip)
#define IOP_FORMAT(ip,vp)	(*(ip)->li_ops->iop_format)(ip, vp)
#define IOP_PIN(ip)		(*(ip)->li_ops->iop_pin)(ip)
#define IOP_UNPIN(ip, flags)	(*(ip)->li_ops->iop_unpin)(ip, flags)
#define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
#define IOP_TRYLOCK(ip)		(*(ip)->li_ops->iop_trylock)(ip)
#define IOP_UNLOCK(ip)		(*(ip)->li_ops->iop_unlock)(ip)
#define IOP_COMMITTED(ip, lsn)	(*(ip)->li_ops->iop_committed)(ip, lsn)
#define IOP_PUSH(ip)		(*(ip)->li_ops->iop_push)(ip)
#define IOP_ABORT(ip)		(*(ip)->li_ops->iop_abort)(ip)
#define IOP_PUSHBUF(ip)		(*(ip)->li_ops->iop_pushbuf)(ip)
#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)

/*
 * Return values for the IOP_TRYLOCK() routines.
 */
#define	XFS_ITEM_SUCCESS	0
#define	XFS_ITEM_PINNED		1
#define	XFS_ITEM_LOCKED		2
#define	XFS_ITEM_FLUSHING	3
#define XFS_ITEM_PUSHBUF	4

#endif	/* __KERNEL__ */

/*
 * This structure is used to track log items associated with
 * a transaction.  It points to the log item and keeps some
 * flags to track the state of the log item.  It also tracks
 * the amount of space needed to log the item it describes
 * once we get to commit processing (see xfs_trans_commit()).
 */
typedef struct xfs_log_item_desc {
	xfs_log_item_t	*lid_item;
	ushort		lid_size;
	unsigned char	lid_flags;
	unsigned char	lid_index;
} xfs_log_item_desc_t;

#define XFS_LID_DIRTY		0x1
#define XFS_LID_PINNED		0x2
#define XFS_LID_BUF_STALE	0x8

/*
 * This structure is used to maintain a chunk list of log_item_desc
 * structures. The free field is a bitmask indicating which descriptors
 * in this chunk's array are free.  The unused field is the first value
 * not used since this chunk was allocated.
 */
#define	XFS_LIC_NUM_SLOTS	15
typedef struct xfs_log_item_chunk {
	struct xfs_log_item_chunk	*lic_next;
	ushort				lic_free;
	ushort				lic_unused;
	xfs_log_item_desc_t		lic_descs[XFS_LIC_NUM_SLOTS];
} xfs_log_item_chunk_t;

#define	XFS_LIC_MAX_SLOT	(XFS_LIC_NUM_SLOTS - 1)
#define	XFS_LIC_FREEMASK	((1 << XFS_LIC_NUM_SLOTS) - 1)


/*
 * Initialize the given chunk.  Set the chunk's free descriptor mask
 * to indicate that all descriptors are free.  The caller gets to set
 * lic_unused to the right value (0 matches all free).  The
 * lic_descs.lid_index values are set up as each desc is allocated.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_INIT)
void xfs_lic_init(xfs_log_item_chunk_t *cp);
#define	XFS_LIC_INIT(cp)	xfs_lic_init(cp)
#else
#define	XFS_LIC_INIT(cp)	((cp)->lic_free = XFS_LIC_FREEMASK)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_INIT_SLOT)
void xfs_lic_init_slot(xfs_log_item_chunk_t *cp, int slot);
#define	XFS_LIC_INIT_SLOT(cp,slot)	xfs_lic_init_slot(cp, slot)
#else
#define	XFS_LIC_INIT_SLOT(cp,slot)	\
	((cp)->lic_descs[slot].lid_index = (unsigned char)(slot))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_VACANCY)
int xfs_lic_vacancy(xfs_log_item_chunk_t *cp);
#define	XFS_LIC_VACANCY(cp)		xfs_lic_vacancy(cp)
#else
#define	XFS_LIC_VACANCY(cp)		(((cp)->lic_free) & XFS_LIC_FREEMASK)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_ALL_FREE)
void xfs_lic_all_free(xfs_log_item_chunk_t *cp);
#define	XFS_LIC_ALL_FREE(cp)		xfs_lic_all_free(cp)
#else
#define	XFS_LIC_ALL_FREE(cp)		((cp)->lic_free = XFS_LIC_FREEMASK)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_ARE_ALL_FREE)
int xfs_lic_are_all_free(xfs_log_item_chunk_t *cp);
#define	XFS_LIC_ARE_ALL_FREE(cp)	xfs_lic_are_all_free(cp)
#else
#define	XFS_LIC_ARE_ALL_FREE(cp)	(((cp)->lic_free & XFS_LIC_FREEMASK) ==\
					XFS_LIC_FREEMASK)
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_ISFREE)
int xfs_lic_isfree(xfs_log_item_chunk_t *cp, int slot);
#define	XFS_LIC_ISFREE(cp,slot)	xfs_lic_isfree(cp,slot)
#else
#define	XFS_LIC_ISFREE(cp,slot)	((cp)->lic_free & (1 << (slot)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_CLAIM)
void xfs_lic_claim(xfs_log_item_chunk_t *cp, int slot);
#define	XFS_LIC_CLAIM(cp,slot)		xfs_lic_claim(cp,slot)
#else
#define	XFS_LIC_CLAIM(cp,slot)		((cp)->lic_free &= ~(1 << (slot)))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_RELSE)
void xfs_lic_relse(xfs_log_item_chunk_t *cp, int slot);
#define	XFS_LIC_RELSE(cp,slot)		xfs_lic_relse(cp,slot)
#else
#define	XFS_LIC_RELSE(cp,slot)		((cp)->lic_free |= 1 << (slot))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_SLOT)
xfs_log_item_desc_t *xfs_lic_slot(xfs_log_item_chunk_t *cp, int slot);
#define	XFS_LIC_SLOT(cp,slot)		xfs_lic_slot(cp,slot)
#else
#define	XFS_LIC_SLOT(cp,slot)		(&((cp)->lic_descs[slot]))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_DESC_TO_SLOT)
int xfs_lic_desc_to_slot(xfs_log_item_desc_t *dp);
#define	XFS_LIC_DESC_TO_SLOT(dp)	xfs_lic_desc_to_slot(dp)
#else
#define	XFS_LIC_DESC_TO_SLOT(dp)	((uint)((dp)->lid_index))
#endif
/*
 * Calculate the address of a chunk given a descriptor pointer:
 * dp - dp->lid_index give the address of the start of the lic_descs array.
 * From this we subtract the offset of the lic_descs field in a chunk.
 * All of this yields the address of the chunk, which is
 * cast to a chunk pointer.
 */
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LIC_DESC_TO_CHUNK)
xfs_log_item_chunk_t *xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp);
#define	XFS_LIC_DESC_TO_CHUNK(dp)	xfs_lic_desc_to_chunk(dp)
#else
#define	XFS_LIC_DESC_TO_CHUNK(dp)	((xfs_log_item_chunk_t*) \
					(((xfs_caddr_t)((dp) - (dp)->lid_index)) -\
					(xfs_caddr_t)(((xfs_log_item_chunk_t*) \
					0)->lic_descs)))
#endif

#ifdef __KERNEL__
/*
 * This structure is used to maintain a list of block ranges that have been
 * freed in the transaction.  The ranges are listed in the perag[] busy list
 * between when they're freed and the transaction is committed to disk.
 */

typedef struct xfs_log_busy_slot {
	xfs_agnumber_t		lbc_ag;
	ushort			lbc_idx;	/* index in perag.busy[] */
} xfs_log_busy_slot_t;

#define XFS_LBC_NUM_SLOTS	31
typedef struct xfs_log_busy_chunk {
	struct xfs_log_busy_chunk	*lbc_next;
	uint				lbc_free;	/* bitmask of free slots */
	ushort				lbc_unused;	/* first unused */
	xfs_log_busy_slot_t		lbc_busy[XFS_LBC_NUM_SLOTS];
} xfs_log_busy_chunk_t;

#define	XFS_LBC_MAX_SLOT	(XFS_LBC_NUM_SLOTS - 1)
#define	XFS_LBC_FREEMASK	((1U << XFS_LBC_NUM_SLOTS) - 1)

#define	XFS_LBC_INIT(cp)	((cp)->lbc_free = XFS_LBC_FREEMASK)
#define	XFS_LBC_CLAIM(cp, slot)	((cp)->lbc_free &= ~(1 << (slot)))
#define	XFS_LBC_SLOT(cp, slot)	(&((cp)->lbc_busy[(slot)]))
#define	XFS_LBC_VACANCY(cp)	(((cp)->lbc_free) & XFS_LBC_FREEMASK)
#define	XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))

/*
 * This is the type of function which can be given to xfs_trans_callback()
 * to be called upon the transaction's commit to disk.
 */
typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);

/*
 * This is the structure maintained for every active transaction.
 */
typedef struct xfs_trans {
	unsigned int		t_magic;	/* magic number */
	xfs_log_callback_t	t_logcb;	/* log callback struct */
	struct xfs_trans	*t_forw;	/* async list pointers */
	struct xfs_trans	*t_back;	/* async list pointers */
	unsigned int		t_type;		/* transaction type */
	unsigned int		t_log_res;	/* amt of log space resvd */
	unsigned int		t_log_count;	/* count for perm log res */
	unsigned int		t_blk_res;	/* # of blocks resvd */
	unsigned int		t_blk_res_used;	/* # of resvd blocks used */
	unsigned int		t_rtx_res;	/* # of rt extents resvd */
	unsigned int		t_rtx_res_used;	/* # of resvd rt extents used */
	xfs_log_ticket_t	t_ticket;	/* log mgr ticket */
	sema_t			t_sema;		/* sema for commit completion */
	xfs_lsn_t		t_lsn;		/* log seq num of start of
						 * transaction. */
	xfs_lsn_t		t_commit_lsn;	/* log seq num of end of
						 * transaction. */
	struct xfs_mount	*t_mountp;	/* ptr to fs mount struct */
	struct xfs_dquot_acct   *t_dqinfo;	/* accting info for dquots */
	xfs_trans_callback_t	t_callback;	/* transaction callback */
	void			*t_callarg;	/* callback arg */
	unsigned int		t_flags;	/* misc flags */
	long			t_icount_delta;	/* superblock icount change */
	long			t_ifree_delta;	/* superblock ifree change */
	long			t_fdblocks_delta; /* superblock fdblocks chg */
	long			t_res_fdblocks_delta; /* on-disk only chg */
	long			t_frextents_delta;/* superblock freextents chg*/
	long			t_res_frextents_delta; /* on-disk only chg */
	long			t_ag_freeblks_delta; /* debugging counter */
	long			t_ag_flist_delta; /* debugging counter */
	long			t_ag_btree_delta; /* debugging counter */
	long			t_dblocks_delta;/* superblock dblocks change */
	long			t_agcount_delta;/* superblock agcount change */
	long			t_imaxpct_delta;/* superblock imaxpct change */
	long			t_rextsize_delta;/* superblock rextsize chg */
	long			t_rbmblocks_delta;/* superblock rbmblocks chg */
	long			t_rblocks_delta;/* superblock rblocks change */
	long			t_rextents_delta;/* superblocks rextents chg */
	long			t_rextslog_delta;/* superblocks rextslog chg */
	unsigned int		t_items_free;	/* log item descs free */
	xfs_log_item_chunk_t	t_items;	/* first log item desc chunk */
	xfs_trans_header_t	t_header;	/* header for in-log trans */
	unsigned int		t_busy_free;	/* busy descs free */
	xfs_log_busy_chunk_t	t_busy;		/* busy/async free blocks */
        xfs_pflags_t            t_pflags;       /* saved pflags state */
} xfs_trans_t;

#endif	/* __KERNEL__ */


#define	XFS_TRANS_MAGIC		0x5452414E	/* 'TRAN' */
/*
 * Values for t_flags.
 */
#define	XFS_TRANS_DIRTY		0x01	/* something needs to be logged */
#define	XFS_TRANS_SB_DIRTY	0x02	/* superblock is modified */
#define	XFS_TRANS_PERM_LOG_RES	0x04	/* xact took a permanent log res */
#define	XFS_TRANS_SYNC		0x08	/* make commit synchronous */
#define XFS_TRANS_DQ_DIRTY	0x10	/* at least one dquot in trx dirty */
#define XFS_TRANS_RESERVE	0x20    /* OK to use reserved data blocks */

/*
 * Values for call flags parameter.
 */
#define	XFS_TRANS_NOSLEEP		0x1
#define	XFS_TRANS_WAIT			0x2
#define	XFS_TRANS_RELEASE_LOG_RES	0x4
#define	XFS_TRANS_ABORT			0x8

/*
 * Field values for xfs_trans_mod_sb.
 */
#define	XFS_TRANS_SB_ICOUNT		0x00000001
#define	XFS_TRANS_SB_IFREE		0x00000002
#define	XFS_TRANS_SB_FDBLOCKS		0x00000004
#define	XFS_TRANS_SB_RES_FDBLOCKS	0x00000008
#define	XFS_TRANS_SB_FREXTENTS		0x00000010
#define	XFS_TRANS_SB_RES_FREXTENTS	0x00000020
#define	XFS_TRANS_SB_DBLOCKS		0x00000040
#define	XFS_TRANS_SB_AGCOUNT		0x00000080
#define	XFS_TRANS_SB_IMAXPCT		0x00000100
#define	XFS_TRANS_SB_REXTSIZE		0x00000200
#define	XFS_TRANS_SB_RBMBLOCKS		0x00000400
#define	XFS_TRANS_SB_RBLOCKS		0x00000800
#define	XFS_TRANS_SB_REXTENTS		0x00001000
#define	XFS_TRANS_SB_REXTSLOG		0x00002000


/*
 * Various log reservation values.
 * These are based on the size of the file system block
 * because that is what most transactions manipulate.
 * Each adds in an additional 128 bytes per item logged to
 * try to account for the overhead of the transaction mechanism.
 *
 * Note:
 * Most of the reservations underestimate the number of allocation
 * groups into which they could free extents in the xfs_bmap_finish()
 * call.  This is because the number in the worst case is quite high
 * and quite unusual.  In order to fix this we need to change
 * xfs_bmap_finish() to free extents in only a single AG at a time.
 * This will require changes to the EFI code as well, however, so that
 * the EFI for the extents not freed is logged again in each transaction.
 * See bug 261917.
 */

/*
 * Per-extent log reservation for the allocation btree changes
 * involved in freeing or allocating an extent.
 * 2 trees * (2 blocks/level * max depth - 1) * block size
 */
#define	XFS_ALLOCFREE_LOG_RES(mp,nx) \
	((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
#define	XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
	((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))

/*
 * Per-directory log reservation for any directory change.
 * dir blocks: (1 btree block per level + data block + free block) * dblock size
 * bmap btree: (levels + 2) * max depth * block size
 * v2 directory blocks can be fragmented below the dirblksize down to the fsb
 * size, so account for that in the DAENTER macros.
 */
#define	XFS_DIROP_LOG_RES(mp)	\
	(XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
	 (XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
#define	XFS_DIROP_LOG_COUNT(mp)	\
	(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
	 XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)

/*
 * In a write transaction we can allocate a maximum of 2
 * extents.  This gives:
 *    the inode getting the new extents: inode size
 *    the inode\'s bmap btree: max depth * block size
 *    the agfs of the ags from which the extents are allocated: 2 * sector
 *    the superblock free block counter: sector size
 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 * And the bmap_finish transaction can free bmap blocks in a join:
 *    the agfs of the ags containing the blocks: 2 * sector size
 *    the agfls of the ags containing the blocks: 2 * sector size
 *    the super block free block counter: sector size
 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 */
#define XFS_CALC_WRITE_LOG_RES(mp) \
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
	  (2 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 2) + \
	  (128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))),\
	 ((2 * (mp)->m_sb.sb_sectsize) + \
	  (2 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 2) + \
	  (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))

#define	XFS_WRITE_LOG_RES(mp)	((mp)->m_reservations.tr_write)

/*
 * In truncating a file we free up to two extents at once.  We can modify:
 *    the inode being truncated: inode size
 *    the inode\'s bmap btree: (max depth + 1) * block size
 * And the bmap_finish transaction can free the blocks and bmap blocks:
 *    the agf for each of the ags: 4 * sector size
 *    the agfl for each of the ags: 4 * sector size
 *    the super block to reflect the freed blocks: sector size
 *    worst case split in allocation btrees per extent assuming 4 extents:
 *		4 exts * 2 trees * (2 * max depth - 1) * block size
 *    the inode btree: max depth * blocksize
 *    the allocation btrees: 2 trees * (max depth - 1) * block size
 */
#define	XFS_CALC_ITRUNCATE_LOG_RES(mp) \
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + \
	  (128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
	 ((4 * (mp)->m_sb.sb_sectsize) + \
	  (4 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 4) + \
	  (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))) + \
	  (128 * 5) + \
	  XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	   (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
	    XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))

#define	XFS_ITRUNCATE_LOG_RES(mp)   ((mp)->m_reservations.tr_itruncate)

/*
 * In renaming a files we can modify:
 *    the four inodes involved: 4 * inode size
 *    the two directory btrees: 2 * (max depth + v2) * dir block size
 *    the two directory bmap btrees: 2 * max depth * block size
 * And the bmap_finish transaction can free dir and bmap blocks (two sets
 *	of bmap blocks) giving:
 *    the agf for the ags in which the blocks live: 3 * sector size
 *    the agfl for the ags in which the blocks live: 3 * sector size
 *    the superblock for the free block count: sector size
 *    the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
 */
#define	XFS_CALC_RENAME_LOG_RES(mp) \
	(MAX( \
	 ((4 * (mp)->m_sb.sb_inodesize) + \
	  (2 * XFS_DIROP_LOG_RES(mp)) + \
	  (128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp)))), \
	 ((3 * (mp)->m_sb.sb_sectsize) + \
	  (3 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 3) + \
	  (128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))))))

#define	XFS_RENAME_LOG_RES(mp)	((mp)->m_reservations.tr_rename)

/*
 * For creating a link to an inode:
 *    the parent directory inode: inode size
 *    the linked inode: inode size
 *    the directory btree could split: (max depth + v2) * dir block size
 *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 * And the bmap_finish transaction can free some bmap blocks giving:
 *    the agf for the ag in which the blocks live: sector size
 *    the agfl for the ag in which the blocks live: sector size
 *    the superblock for the free block count: sector size
 *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 */
#define	XFS_CALC_LINK_LOG_RES(mp) \
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  (mp)->m_sb.sb_inodesize + \
	  XFS_DIROP_LOG_RES(mp) + \
	  (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
	 ((mp)->m_sb.sb_sectsize + \
	  (mp)->m_sb.sb_sectsize + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	  (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))

#define	XFS_LINK_LOG_RES(mp)	((mp)->m_reservations.tr_link)

/*
 * For removing a directory entry we can modify:
 *    the parent directory inode: inode size
 *    the removed inode: inode size
 *    the directory btree could join: (max depth + v2) * dir block size
 *    the directory bmap btree could join or split: (max depth + v2) * blocksize
 * And the bmap_finish transaction can free the dir and bmap blocks giving:
 *    the agf for the ag in which the blocks live: 2 * sector size
 *    the agfl for the ag in which the blocks live: 2 * sector size
 *    the superblock for the free block count: sector size
 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 */
#define	XFS_CALC_REMOVE_LOG_RES(mp)	\
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  (mp)->m_sb.sb_inodesize + \
	  XFS_DIROP_LOG_RES(mp) + \
	  (128 * (2 + XFS_DIROP_LOG_COUNT(mp)))), \
	 ((2 * (mp)->m_sb.sb_sectsize) + \
	  (2 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 2) + \
	  (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))

#define	XFS_REMOVE_LOG_RES(mp)	((mp)->m_reservations.tr_remove)

/*
 * For symlink we can modify:
 *    the parent directory inode: inode size
 *    the new inode: inode size
 *    the inode btree entry: 1 block
 *    the directory btree: (max depth + v2) * dir block size
 *    the directory inode\'s bmap btree: (max depth + v2) * block size
 *    the blocks for the symlink: 1 KB
 * Or in the first xact we allocate some inodes giving:
 *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 *    the inode btree: max depth * blocksize
 *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size
 */
#define	XFS_CALC_SYMLINK_LOG_RES(mp)		\
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  (mp)->m_sb.sb_inodesize + \
	  XFS_FSB_TO_B(mp, 1) + \
	  XFS_DIROP_LOG_RES(mp) + \
	  1024 + \
	  (128 * (4 + XFS_DIROP_LOG_COUNT(mp)))), \
	 (2 * (mp)->m_sb.sb_sectsize + \
	  XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
	  XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
	  XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	  (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
	   XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))

#define	XFS_SYMLINK_LOG_RES(mp)	((mp)->m_reservations.tr_symlink)

/*
 * For create we can modify:
 *    the parent directory inode: inode size
 *    the new inode: inode size
 *    the inode btree entry: block size
 *    the superblock for the nlink flag: sector size
 *    the directory btree: (max depth + v2) * dir block size
 *    the directory inode\'s bmap btree: (max depth + v2) * block size
 * Or in the first xact we allocate some inodes giving:
 *    the agi and agf of the ag getting the new inodes: 2 * sectorsize
 *    the superblock for the nlink flag: sector size
 *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
 *    the inode btree: max depth * blocksize
 *    the allocation btrees: 2 trees * (max depth - 1) * block size
 */
#define	XFS_CALC_CREATE_LOG_RES(mp)		\
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  (mp)->m_sb.sb_inodesize + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_FSB_TO_B(mp, 1) + \
	  XFS_DIROP_LOG_RES(mp) + \
	  (128 * (3 + XFS_DIROP_LOG_COUNT(mp)))), \
	 (3 * (mp)->m_sb.sb_sectsize + \
	  XFS_FSB_TO_B((mp), XFS_IALLOC_BLOCKS((mp))) + \
	  XFS_FSB_TO_B((mp), XFS_IN_MAXLEVELS(mp)) + \
	  XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	  (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
	   XFS_ALLOCFREE_LOG_COUNT(mp, 1))))))

#define	XFS_CREATE_LOG_RES(mp)	((mp)->m_reservations.tr_create)

/*
 * Making a new directory is the same as creating a new file.
 */
#define	XFS_CALC_MKDIR_LOG_RES(mp)	XFS_CALC_CREATE_LOG_RES(mp)

#define	XFS_MKDIR_LOG_RES(mp)	((mp)->m_reservations.tr_mkdir)

/*
 * In freeing an inode we can modify:
 *    the inode being freed: inode size
 *    the super block free inode counter: sector size
 *    the agi hash list and counters: sector size
 *    the inode btree entry: block size
 *    the on disk inode before ours in the agi hash list: inode cluster size
 *    the inode btree: max depth * blocksize
 *    the allocation btrees: 2 trees * (max depth - 1) * block size
 */
#define	XFS_CALC_IFREE_LOG_RES(mp) \
	((mp)->m_sb.sb_inodesize + \
	 (mp)->m_sb.sb_sectsize + \
	 (mp)->m_sb.sb_sectsize + \
	 XFS_FSB_TO_B((mp), 1) + \
	 MAX((__uint16_t)XFS_FSB_TO_B((mp), 1), XFS_INODE_CLUSTER_SIZE(mp)) + \
	 (128 * 5) + \
	  XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	  (128 * (2 + XFS_IALLOC_BLOCKS(mp) + XFS_IN_MAXLEVELS(mp) + \
	   XFS_ALLOCFREE_LOG_COUNT(mp, 1))))


#define	XFS_IFREE_LOG_RES(mp)	((mp)->m_reservations.tr_ifree)

/*
 * When only changing the inode we log the inode and possibly the superblock
 * We also add a bit of slop for the transaction stuff.
 */
#define	XFS_CALC_ICHANGE_LOG_RES(mp)	((mp)->m_sb.sb_inodesize + \
					 (mp)->m_sb.sb_sectsize + 512)

#define	XFS_ICHANGE_LOG_RES(mp)	((mp)->m_reservations.tr_ichange)

/*
 * Growing the data section of the filesystem.
 *	superblock
 *	agi and agf
 *	allocation btrees
 */
#define	XFS_CALC_GROWDATA_LOG_RES(mp) \
	((mp)->m_sb.sb_sectsize * 3 + \
	 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	 (128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))))

#define	XFS_GROWDATA_LOG_RES(mp)    ((mp)->m_reservations.tr_growdata)

/*
 * Growing the rt section of the filesystem.
 * In the first set of transactions (ALLOC) we allocate space to the
 * bitmap or summary files.
 *	superblock: sector size
 *	agf of the ag from which the extent is allocated: sector size
 *	bmap btree for bitmap/summary inode: max depth * blocksize
 *	bitmap/summary inode: inode size
 *	allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
 */
#define	XFS_CALC_GROWRTALLOC_LOG_RES(mp) \
	(2 * (mp)->m_sb.sb_sectsize + \
	 XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + \
	 (mp)->m_sb.sb_inodesize + \
	 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	 (128 * \
	  (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + \
	   XFS_ALLOCFREE_LOG_COUNT(mp, 1))))

#define	XFS_GROWRTALLOC_LOG_RES(mp)	((mp)->m_reservations.tr_growrtalloc)

/*
 * Growing the rt section of the filesystem.
 * In the second set of transactions (ZERO) we zero the new metadata blocks.
 *	one bitmap/summary block: blocksize
 */
#define	XFS_CALC_GROWRTZERO_LOG_RES(mp) \
	((mp)->m_sb.sb_blocksize + 128)

#define	XFS_GROWRTZERO_LOG_RES(mp)	((mp)->m_reservations.tr_growrtzero)

/*
 * Growing the rt section of the filesystem.
 * In the third set of transactions (FREE) we update metadata without
 * allocating any new blocks.
 *	superblock: sector size
 *	bitmap inode: inode size
 *	summary inode: inode size
 *	one bitmap block: blocksize
 *	summary blocks: new summary size
 */
#define	XFS_CALC_GROWRTFREE_LOG_RES(mp) \
	((mp)->m_sb.sb_sectsize + \
	 2 * (mp)->m_sb.sb_inodesize + \
	 (mp)->m_sb.sb_blocksize + \
	 (mp)->m_rsumsize + \
	 (128 * 5))

#define	XFS_GROWRTFREE_LOG_RES(mp)	((mp)->m_reservations.tr_growrtfree)

/*
 * Logging the inode modification timestamp on a synchronous write.
 *	inode
 */
#define	XFS_CALC_SWRITE_LOG_RES(mp) \
	((mp)->m_sb.sb_inodesize + 128)

#define	XFS_SWRITE_LOG_RES(mp)	((mp)->m_reservations.tr_swrite)

/*
 * Logging the inode timestamps on an fsync -- same as SWRITE
 * as long as SWRITE logs the entire inode core
 */
#define XFS_FSYNC_TS_LOG_RES(mp)        ((mp)->m_reservations.tr_swrite)

/*
 * Logging the inode mode bits when writing a setuid/setgid file
 *	inode
 */
#define	XFS_CALC_WRITEID_LOG_RES(mp) \
	((mp)->m_sb.sb_inodesize + 128)

#define	XFS_WRITEID_LOG_RES(mp)	((mp)->m_reservations.tr_swrite)

/*
 * Converting the inode from non-attributed to attributed.
 *	the inode being converted: inode size
 *	agf block and superblock (for block allocation)
 *	the new block (directory sized)
 *	bmap blocks for the new directory block
 *	allocation btrees
 */
#define	XFS_CALC_ADDAFORK_LOG_RES(mp)	\
	((mp)->m_sb.sb_inodesize + \
	 (mp)->m_sb.sb_sectsize * 2 + \
	 (mp)->m_dirblksize + \
	 (XFS_DIR_IS_V1(mp) ? 0 : \
	    XFS_FSB_TO_B(mp, (XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1))) + \
	 XFS_ALLOCFREE_LOG_RES(mp, 1) + \
	 (128 * (4 + \
		 (XFS_DIR_IS_V1(mp) ? 0 : \
			 XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + \
		 XFS_ALLOCFREE_LOG_COUNT(mp, 1))))

#define	XFS_ADDAFORK_LOG_RES(mp)	((mp)->m_reservations.tr_addafork)

/*
 * Removing the attribute fork of a file
 *    the inode being truncated: inode size
 *    the inode\'s bmap btree: max depth * block size
 * And the bmap_finish transaction can free the blocks and bmap blocks:
 *    the agf for each of the ags: 4 * sector size
 *    the agfl for each of the ags: 4 * sector size
 *    the super block to reflect the freed blocks: sector size
 *    worst case split in allocation btrees per extent assuming 4 extents:
 *		4 exts * 2 trees * (2 * max depth - 1) * block size
 */
#define	XFS_CALC_ATTRINVAL_LOG_RES(mp)	\
	(MAX( \
	 ((mp)->m_sb.sb_inodesize + \
	  XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
	  (128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))), \
	 ((4 * (mp)->m_sb.sb_sectsize) + \
	  (4 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 4) + \
	  (128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))))))

#define	XFS_ATTRINVAL_LOG_RES(mp)	((mp)->m_reservations.tr_attrinval)

/*
 * Setting an attribute.
 *	the inode getting the attribute
 *	the superblock for allocations
 *	the agfs extents are allocated from
 *	the attribute btree * max depth
 *	the inode allocation btree
 * Since attribute transaction space is dependent on the size of the attribute,
 * the calculation is done partially at mount time and partially at runtime.
 */
#define	XFS_CALC_ATTRSET_LOG_RES(mp)	\
	((mp)->m_sb.sb_inodesize + \
	 (mp)->m_sb.sb_sectsize + \
	  XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
	  (128 * (2 + XFS_DA_NODE_MAXDEPTH)))

#define	XFS_ATTRSET_LOG_RES(mp, ext)	\
	((mp)->m_reservations.tr_attrset + \
	 (ext * (mp)->m_sb.sb_sectsize) + \
	 (ext * XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))) + \
	 (128 * (ext + (ext * XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)))))

/*
 * Removing an attribute.
 *    the inode: inode size
 *    the attribute btree could join: max depth * block size
 *    the inode bmap btree could join or split: max depth * block size
 * And the bmap_finish transaction can free the attr blocks freed giving:
 *    the agf for the ag in which the blocks live: 2 * sector size
 *    the agfl for the ag in which the blocks live: 2 * sector size
 *    the superblock for the free block count: sector size
 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
 */
#define	XFS_CALC_ATTRRM_LOG_RES(mp)	\
	(MAX( \
	  ((mp)->m_sb.sb_inodesize + \
	  XFS_FSB_TO_B((mp), XFS_DA_NODE_MAXDEPTH) + \
	  XFS_FSB_TO_B((mp), XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + \
	  (128 * (1 + XFS_DA_NODE_MAXDEPTH + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)))), \
	 ((2 * (mp)->m_sb.sb_sectsize) + \
	  (2 * (mp)->m_sb.sb_sectsize) + \
	  (mp)->m_sb.sb_sectsize + \
	  XFS_ALLOCFREE_LOG_RES(mp, 2) + \
	  (128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))))))

#define	XFS_ATTRRM_LOG_RES(mp)	((mp)->m_reservations.tr_attrrm)

/*
 * Clearing a bad agino number in an agi hash bucket.
 */
#define	XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp) \
	((mp)->m_sb.sb_sectsize + 128)

#define	XFS_CLEAR_AGI_BUCKET_LOG_RES(mp)  ((mp)->m_reservations.tr_clearagi)


/*
 * Various log count values.
 */
#define	XFS_DEFAULT_LOG_COUNT		1
#define	XFS_DEFAULT_PERM_LOG_COUNT	2
#define	XFS_ITRUNCATE_LOG_COUNT		2
#define XFS_INACTIVE_LOG_COUNT		2
#define	XFS_CREATE_LOG_COUNT		2
#define	XFS_MKDIR_LOG_COUNT		3
#define	XFS_SYMLINK_LOG_COUNT		3
#define	XFS_REMOVE_LOG_COUNT		2
#define	XFS_LINK_LOG_COUNT		2
#define	XFS_RENAME_LOG_COUNT		2
#define	XFS_WRITE_LOG_COUNT		2
#define	XFS_ADDAFORK_LOG_COUNT		2
#define	XFS_ATTRINVAL_LOG_COUNT		1
#define	XFS_ATTRSET_LOG_COUNT		3
#define	XFS_ATTRRM_LOG_COUNT		3

/*
 * Here we centralize the specification of XFS meta-data buffer
 * reference count values.  This determine how hard the buffer
 * cache tries to hold onto the buffer.
 */
#define	XFS_AGF_REF		4
#define	XFS_AGI_REF		4
#define	XFS_AGFL_REF		3
#define	XFS_INO_BTREE_REF	3
#define	XFS_ALLOC_BTREE_REF	2
#define	XFS_BMAP_BTREE_REF	2
#define	XFS_DIR_BTREE_REF	2
#define	XFS_ATTR_BTREE_REF	1
#define	XFS_INO_REF		1
#define	XFS_DQUOT_REF		1

#ifdef __KERNEL__
/*
 * XFS transaction mechanism exported interfaces that are
 * actually macros.
 */
#define	xfs_trans_get_log_res(tp)	((tp)->t_log_res)
#define	xfs_trans_get_log_count(tp)	((tp)->t_log_count)
#define	xfs_trans_get_block_res(tp)	((tp)->t_blk_res)
#define	xfs_trans_set_sync(tp)		((tp)->t_flags |= XFS_TRANS_SYNC)

#ifdef DEBUG
#define	xfs_trans_agblocks_delta(tp, d)	((tp)->t_ag_freeblks_delta += (long)d)
#define	xfs_trans_agflist_delta(tp, d)	((tp)->t_ag_flist_delta += (long)d)
#define	xfs_trans_agbtree_delta(tp, d)	((tp)->t_ag_btree_delta += (long)d)
#else
#define	xfs_trans_agblocks_delta(tp, d)
#define	xfs_trans_agflist_delta(tp, d)
#define	xfs_trans_agbtree_delta(tp, d)
#endif

/*
 * XFS transaction mechanism exported interfaces.
 */
void		xfs_trans_init(struct xfs_mount *);
xfs_trans_t	*xfs_trans_alloc(struct xfs_mount *, uint);
xfs_trans_t	*_xfs_trans_alloc(struct xfs_mount *, uint);
xfs_trans_t	*xfs_trans_dup(xfs_trans_t *);
int		xfs_trans_reserve(xfs_trans_t *, uint, uint, uint,
				  uint, uint);
void		xfs_trans_mod_sb(xfs_trans_t *, uint, long);
struct xfs_buf	*xfs_trans_get_buf(xfs_trans_t *, struct xfs_buftarg *, xfs_daddr_t,
				   int, uint);
int		xfs_trans_read_buf(struct xfs_mount *, xfs_trans_t *,
				   struct xfs_buftarg *, xfs_daddr_t, int, uint,
				   struct xfs_buf **);
struct xfs_buf	*xfs_trans_getsb(xfs_trans_t *, struct xfs_mount *, int);

void		xfs_trans_brelse(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_bjoin(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_bhold(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_binval(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
void		xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
void		xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
int		xfs_trans_iget(struct xfs_mount *, xfs_trans_t *,
			       xfs_ino_t , uint, uint, struct xfs_inode **);
void		xfs_trans_ijoin(xfs_trans_t *, struct xfs_inode *, uint);
void		xfs_trans_ihold(xfs_trans_t *, struct xfs_inode *);
void		xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
void		xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
struct xfs_efi_log_item	*xfs_trans_get_efi(xfs_trans_t *, uint);
void		xfs_efi_release(struct xfs_efi_log_item *, uint);
void		xfs_trans_log_efi_extent(xfs_trans_t *,
					 struct xfs_efi_log_item *,
					 xfs_fsblock_t,
					 xfs_extlen_t);
struct xfs_efd_log_item	*xfs_trans_get_efd(xfs_trans_t *,
				  struct xfs_efi_log_item *,
				  uint);
void		xfs_trans_log_efd_extent(xfs_trans_t *,
					 struct xfs_efd_log_item *,
					 xfs_fsblock_t,
					 xfs_extlen_t);
int		_xfs_trans_commit(xfs_trans_t *,
				  uint flags,
				  xfs_lsn_t *,
				  int *);
#define xfs_trans_commit(tp, flags, lsn) \
	_xfs_trans_commit(tp, flags, lsn, NULL)
void		xfs_trans_cancel(xfs_trans_t *, int);
void		xfs_trans_ail_init(struct xfs_mount *);
xfs_lsn_t	xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
xfs_lsn_t	xfs_trans_tail_ail(struct xfs_mount *);
void		xfs_trans_unlocked_item(struct xfs_mount *,
					xfs_log_item_t *);
xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
					xfs_agnumber_t ag,
					xfs_extlen_t idx);

#endif	/* __KERNEL__ */

#endif	/* __XFS_TRANS_H__ */