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18#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_types.h"
21#include "xfs_bit.h"
22#include "xfs_log.h"
23#include "xfs_inum.h"
24#include "xfs_trans.h"
25#include "xfs_sb.h"
26#include "xfs_ag.h"
27#include "xfs_dir2.h"
28#include "xfs_da_btree.h"
29#include "xfs_bmap_btree.h"
30#include "xfs_alloc_btree.h"
31#include "xfs_ialloc_btree.h"
32#include "xfs_dinode.h"
33#include "xfs_inode.h"
34#include "xfs_btree.h"
35#include "xfs_mount.h"
36#include "xfs_itable.h"
37#include "xfs_inode_item.h"
38#include "xfs_extfree_item.h"
39#include "xfs_alloc.h"
40#include "xfs_bmap.h"
41#include "xfs_rtalloc.h"
42#include "xfs_error.h"
43#include "xfs_attr_leaf.h"
44#include "xfs_rw.h"
45#include "xfs_quota.h"
46#include "xfs_trans_space.h"
47#include "xfs_buf_item.h"
48#include "xfs_filestream.h"
49#include "xfs_vnodeops.h"
50#include "xfs_trace.h"
51
52
53kmem_zone_t *xfs_bmap_free_item_zone;
54
55
56
57
58
59#ifdef DEBUG
60STATIC void
61xfs_bmap_check_leaf_extents(
62 struct xfs_btree_cur *cur,
63 struct xfs_inode *ip,
64 int whichfork);
65#else
66#define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0)
67#endif
68
69
70
71
72
73STATIC int
74xfs_bmap_add_attrfork_extents(
75 xfs_trans_t *tp,
76 xfs_inode_t *ip,
77 xfs_fsblock_t *firstblock,
78 xfs_bmap_free_t *flist,
79 int *flags);
80
81
82
83
84STATIC int
85xfs_bmap_add_attrfork_local(
86 xfs_trans_t *tp,
87 xfs_inode_t *ip,
88 xfs_fsblock_t *firstblock,
89 xfs_bmap_free_t *flist,
90 int *flags);
91
92
93
94
95
96STATIC int
97xfs_bmap_alloc(
98 xfs_bmalloca_t *ap);
99
100
101
102
103
104
105
106STATIC int
107xfs_bmap_btree_to_extents(
108 xfs_trans_t *tp,
109 xfs_inode_t *ip,
110 xfs_btree_cur_t *cur,
111 int *logflagsp,
112 int whichfork);
113
114
115
116
117
118STATIC void
119xfs_bmap_del_free(
120 xfs_bmap_free_t *flist,
121 xfs_bmap_free_item_t *prev,
122 xfs_bmap_free_item_t *free);
123
124
125
126
127
128STATIC int
129xfs_bmap_extents_to_btree(
130 xfs_trans_t *tp,
131 xfs_inode_t *ip,
132 xfs_fsblock_t *firstblock,
133 xfs_bmap_free_t *flist,
134 xfs_btree_cur_t **curp,
135 int wasdel,
136 int *logflagsp,
137 int whichfork);
138
139
140
141
142
143
144STATIC int
145xfs_bmap_local_to_extents(
146 xfs_trans_t *tp,
147 xfs_inode_t *ip,
148 xfs_fsblock_t *firstblock,
149 xfs_extlen_t total,
150 int *logflagsp,
151 int whichfork);
152
153
154
155
156
157
158
159
160STATIC xfs_bmbt_rec_host_t *
161xfs_bmap_search_extents(
162 xfs_inode_t *ip,
163 xfs_fileoff_t bno,
164 int whichfork,
165 int *eofp,
166 xfs_extnum_t *lastxp,
167 xfs_bmbt_irec_t *gotp,
168 xfs_bmbt_irec_t *prevp);
169
170
171
172
173
174STATIC xfs_filblks_t
175xfs_bmap_worst_indlen(
176 xfs_inode_t *ip,
177 xfs_filblks_t len);
178
179#ifdef DEBUG
180
181
182
183
184STATIC void
185xfs_bmap_validate_ret(
186 xfs_fileoff_t bno,
187 xfs_filblks_t len,
188 int flags,
189 xfs_bmbt_irec_t *mval,
190 int nmap,
191 int ret_nmap);
192#else
193#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)
194#endif
195
196STATIC int
197xfs_bmap_count_tree(
198 xfs_mount_t *mp,
199 xfs_trans_t *tp,
200 xfs_ifork_t *ifp,
201 xfs_fsblock_t blockno,
202 int levelin,
203 int *count);
204
205STATIC void
206xfs_bmap_count_leaves(
207 xfs_ifork_t *ifp,
208 xfs_extnum_t idx,
209 int numrecs,
210 int *count);
211
212STATIC void
213xfs_bmap_disk_count_leaves(
214 struct xfs_mount *mp,
215 struct xfs_btree_block *block,
216 int numrecs,
217 int *count);
218
219
220
221
222
223STATIC int
224xfs_bmbt_lookup_eq(
225 struct xfs_btree_cur *cur,
226 xfs_fileoff_t off,
227 xfs_fsblock_t bno,
228 xfs_filblks_t len,
229 int *stat)
230{
231 cur->bc_rec.b.br_startoff = off;
232 cur->bc_rec.b.br_startblock = bno;
233 cur->bc_rec.b.br_blockcount = len;
234 return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
235}
236
237STATIC int
238xfs_bmbt_lookup_ge(
239 struct xfs_btree_cur *cur,
240 xfs_fileoff_t off,
241 xfs_fsblock_t bno,
242 xfs_filblks_t len,
243 int *stat)
244{
245 cur->bc_rec.b.br_startoff = off;
246 cur->bc_rec.b.br_startblock = bno;
247 cur->bc_rec.b.br_blockcount = len;
248 return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
249}
250
251
252
253
254static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork)
255{
256 return XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS &&
257 XFS_IFORK_NEXTENTS(ip, whichfork) >
258 XFS_IFORK_MAXEXT(ip, whichfork);
259}
260
261
262
263
264static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork)
265{
266 return XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE &&
267 XFS_IFORK_NEXTENTS(ip, whichfork) <=
268 XFS_IFORK_MAXEXT(ip, whichfork);
269}
270
271
272
273
274
275
276STATIC int
277xfs_bmbt_update(
278 struct xfs_btree_cur *cur,
279 xfs_fileoff_t off,
280 xfs_fsblock_t bno,
281 xfs_filblks_t len,
282 xfs_exntst_t state)
283{
284 union xfs_btree_rec rec;
285
286 xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state);
287 return xfs_btree_update(cur, &rec);
288}
289
290
291
292
293STATIC int
294xfs_bmap_add_attrfork_btree(
295 xfs_trans_t *tp,
296 xfs_inode_t *ip,
297 xfs_fsblock_t *firstblock,
298 xfs_bmap_free_t *flist,
299 int *flags)
300{
301 xfs_btree_cur_t *cur;
302 int error;
303 xfs_mount_t *mp;
304 int stat;
305
306 mp = ip->i_mount;
307 if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip))
308 *flags |= XFS_ILOG_DBROOT;
309 else {
310 cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK);
311 cur->bc_private.b.flist = flist;
312 cur->bc_private.b.firstblock = *firstblock;
313 if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat)))
314 goto error0;
315
316 XFS_WANT_CORRUPTED_GOTO(stat == 1, error0);
317 if ((error = xfs_btree_new_iroot(cur, flags, &stat)))
318 goto error0;
319 if (stat == 0) {
320 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
321 return XFS_ERROR(ENOSPC);
322 }
323 *firstblock = cur->bc_private.b.firstblock;
324 cur->bc_private.b.allocated = 0;
325 xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
326 }
327 return 0;
328error0:
329 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
330 return error;
331}
332
333
334
335
336STATIC int
337xfs_bmap_add_attrfork_extents(
338 xfs_trans_t *tp,
339 xfs_inode_t *ip,
340 xfs_fsblock_t *firstblock,
341 xfs_bmap_free_t *flist,
342 int *flags)
343{
344 xfs_btree_cur_t *cur;
345 int error;
346
347 if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip))
348 return 0;
349 cur = NULL;
350 error = xfs_bmap_extents_to_btree(tp, ip, firstblock, flist, &cur, 0,
351 flags, XFS_DATA_FORK);
352 if (cur) {
353 cur->bc_private.b.allocated = 0;
354 xfs_btree_del_cursor(cur,
355 error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
356 }
357 return error;
358}
359
360
361
362
363STATIC int
364xfs_bmap_add_attrfork_local(
365 xfs_trans_t *tp,
366 xfs_inode_t *ip,
367 xfs_fsblock_t *firstblock,
368 xfs_bmap_free_t *flist,
369 int *flags)
370{
371 xfs_da_args_t dargs;
372 int error;
373 xfs_mount_t *mp;
374
375 if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip))
376 return 0;
377 if (S_ISDIR(ip->i_d.di_mode)) {
378 mp = ip->i_mount;
379 memset(&dargs, 0, sizeof(dargs));
380 dargs.dp = ip;
381 dargs.firstblock = firstblock;
382 dargs.flist = flist;
383 dargs.total = mp->m_dirblkfsbs;
384 dargs.whichfork = XFS_DATA_FORK;
385 dargs.trans = tp;
386 error = xfs_dir2_sf_to_block(&dargs);
387 } else
388 error = xfs_bmap_local_to_extents(tp, ip, firstblock, 1, flags,
389 XFS_DATA_FORK);
390 return error;
391}
392
393
394
395
396STATIC int
397xfs_bmap_add_extent_delay_real(
398 struct xfs_bmalloca *bma)
399{
400 struct xfs_bmbt_irec *new = &bma->got;
401 int diff;
402 xfs_bmbt_rec_host_t *ep;
403 int error;
404 int i;
405 xfs_ifork_t *ifp;
406 xfs_fileoff_t new_endoff;
407 xfs_bmbt_irec_t r[3];
408
409 int rval=0;
410 int state = 0;
411 xfs_filblks_t da_new;
412 xfs_filblks_t da_old;
413 xfs_filblks_t temp=0;
414 xfs_filblks_t temp2=0;
415 int tmp_rval;
416
417 ifp = XFS_IFORK_PTR(bma->ip, XFS_DATA_FORK);
418
419 ASSERT(bma->idx >= 0);
420 ASSERT(bma->idx <= ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
421 ASSERT(!isnullstartblock(new->br_startblock));
422 ASSERT(!bma->cur ||
423 (bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL));
424
425 XFS_STATS_INC(xs_add_exlist);
426
427#define LEFT r[0]
428#define RIGHT r[1]
429#define PREV r[2]
430
431
432
433
434 ep = xfs_iext_get_ext(ifp, bma->idx);
435 xfs_bmbt_get_all(ep, &PREV);
436 new_endoff = new->br_startoff + new->br_blockcount;
437 ASSERT(PREV.br_startoff <= new->br_startoff);
438 ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff);
439
440 da_old = startblockval(PREV.br_startblock);
441 da_new = 0;
442
443
444
445
446
447 if (PREV.br_startoff == new->br_startoff)
448 state |= BMAP_LEFT_FILLING;
449 if (PREV.br_startoff + PREV.br_blockcount == new_endoff)
450 state |= BMAP_RIGHT_FILLING;
451
452
453
454
455
456 if (bma->idx > 0) {
457 state |= BMAP_LEFT_VALID;
458 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &LEFT);
459
460 if (isnullstartblock(LEFT.br_startblock))
461 state |= BMAP_LEFT_DELAY;
462 }
463
464 if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) &&
465 LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff &&
466 LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock &&
467 LEFT.br_state == new->br_state &&
468 LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN)
469 state |= BMAP_LEFT_CONTIG;
470
471
472
473
474
475
476 if (bma->idx < bma->ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1) {
477 state |= BMAP_RIGHT_VALID;
478 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx + 1), &RIGHT);
479
480 if (isnullstartblock(RIGHT.br_startblock))
481 state |= BMAP_RIGHT_DELAY;
482 }
483
484 if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) &&
485 new_endoff == RIGHT.br_startoff &&
486 new->br_startblock + new->br_blockcount == RIGHT.br_startblock &&
487 new->br_state == RIGHT.br_state &&
488 new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN &&
489 ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
490 BMAP_RIGHT_FILLING)) !=
491 (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
492 BMAP_RIGHT_FILLING) ||
493 LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount
494 <= MAXEXTLEN))
495 state |= BMAP_RIGHT_CONTIG;
496
497 error = 0;
498
499
500
501 switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG |
502 BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) {
503 case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG |
504 BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG:
505
506
507
508
509 bma->idx--;
510 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
511 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx),
512 LEFT.br_blockcount + PREV.br_blockcount +
513 RIGHT.br_blockcount);
514 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
515
516 xfs_iext_remove(bma->ip, bma->idx + 1, 2, state);
517 bma->ip->i_d.di_nextents--;
518 if (bma->cur == NULL)
519 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
520 else {
521 rval = XFS_ILOG_CORE;
522 error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff,
523 RIGHT.br_startblock,
524 RIGHT.br_blockcount, &i);
525 if (error)
526 goto done;
527 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
528 error = xfs_btree_delete(bma->cur, &i);
529 if (error)
530 goto done;
531 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
532 error = xfs_btree_decrement(bma->cur, 0, &i);
533 if (error)
534 goto done;
535 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
536 error = xfs_bmbt_update(bma->cur, LEFT.br_startoff,
537 LEFT.br_startblock,
538 LEFT.br_blockcount +
539 PREV.br_blockcount +
540 RIGHT.br_blockcount, LEFT.br_state);
541 if (error)
542 goto done;
543 }
544 break;
545
546 case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG:
547
548
549
550
551 bma->idx--;
552
553 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
554 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx),
555 LEFT.br_blockcount + PREV.br_blockcount);
556 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
557
558 xfs_iext_remove(bma->ip, bma->idx + 1, 1, state);
559 if (bma->cur == NULL)
560 rval = XFS_ILOG_DEXT;
561 else {
562 rval = 0;
563 error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff,
564 LEFT.br_startblock, LEFT.br_blockcount,
565 &i);
566 if (error)
567 goto done;
568 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
569 error = xfs_bmbt_update(bma->cur, LEFT.br_startoff,
570 LEFT.br_startblock,
571 LEFT.br_blockcount +
572 PREV.br_blockcount, LEFT.br_state);
573 if (error)
574 goto done;
575 }
576 break;
577
578 case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG:
579
580
581
582
583 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
584 xfs_bmbt_set_startblock(ep, new->br_startblock);
585 xfs_bmbt_set_blockcount(ep,
586 PREV.br_blockcount + RIGHT.br_blockcount);
587 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
588
589 xfs_iext_remove(bma->ip, bma->idx + 1, 1, state);
590 if (bma->cur == NULL)
591 rval = XFS_ILOG_DEXT;
592 else {
593 rval = 0;
594 error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff,
595 RIGHT.br_startblock,
596 RIGHT.br_blockcount, &i);
597 if (error)
598 goto done;
599 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
600 error = xfs_bmbt_update(bma->cur, PREV.br_startoff,
601 new->br_startblock,
602 PREV.br_blockcount +
603 RIGHT.br_blockcount, PREV.br_state);
604 if (error)
605 goto done;
606 }
607 break;
608
609 case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING:
610
611
612
613
614
615 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
616 xfs_bmbt_set_startblock(ep, new->br_startblock);
617 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
618
619 bma->ip->i_d.di_nextents++;
620 if (bma->cur == NULL)
621 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
622 else {
623 rval = XFS_ILOG_CORE;
624 error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff,
625 new->br_startblock, new->br_blockcount,
626 &i);
627 if (error)
628 goto done;
629 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
630 bma->cur->bc_rec.b.br_state = XFS_EXT_NORM;
631 error = xfs_btree_insert(bma->cur, &i);
632 if (error)
633 goto done;
634 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
635 }
636 break;
637
638 case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG:
639
640
641
642
643 trace_xfs_bmap_pre_update(bma->ip, bma->idx - 1, state, _THIS_IP_);
644 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx - 1),
645 LEFT.br_blockcount + new->br_blockcount);
646 xfs_bmbt_set_startoff(ep,
647 PREV.br_startoff + new->br_blockcount);
648 trace_xfs_bmap_post_update(bma->ip, bma->idx - 1, state, _THIS_IP_);
649
650 temp = PREV.br_blockcount - new->br_blockcount;
651 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
652 xfs_bmbt_set_blockcount(ep, temp);
653 if (bma->cur == NULL)
654 rval = XFS_ILOG_DEXT;
655 else {
656 rval = 0;
657 error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff,
658 LEFT.br_startblock, LEFT.br_blockcount,
659 &i);
660 if (error)
661 goto done;
662 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
663 error = xfs_bmbt_update(bma->cur, LEFT.br_startoff,
664 LEFT.br_startblock,
665 LEFT.br_blockcount +
666 new->br_blockcount,
667 LEFT.br_state);
668 if (error)
669 goto done;
670 }
671 da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp),
672 startblockval(PREV.br_startblock));
673 xfs_bmbt_set_startblock(ep, nullstartblock(da_new));
674 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
675
676 bma->idx--;
677 break;
678
679 case BMAP_LEFT_FILLING:
680
681
682
683
684 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
685 xfs_bmbt_set_startoff(ep, new_endoff);
686 temp = PREV.br_blockcount - new->br_blockcount;
687 xfs_bmbt_set_blockcount(ep, temp);
688 xfs_iext_insert(bma->ip, bma->idx, 1, new, state);
689 bma->ip->i_d.di_nextents++;
690 if (bma->cur == NULL)
691 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
692 else {
693 rval = XFS_ILOG_CORE;
694 error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff,
695 new->br_startblock, new->br_blockcount,
696 &i);
697 if (error)
698 goto done;
699 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
700 bma->cur->bc_rec.b.br_state = XFS_EXT_NORM;
701 error = xfs_btree_insert(bma->cur, &i);
702 if (error)
703 goto done;
704 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
705 }
706
707 if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
708 error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
709 bma->firstblock, bma->flist,
710 &bma->cur, 1, &tmp_rval, XFS_DATA_FORK);
711 rval |= tmp_rval;
712 if (error)
713 goto done;
714 }
715 da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp),
716 startblockval(PREV.br_startblock) -
717 (bma->cur ? bma->cur->bc_private.b.allocated : 0));
718 ep = xfs_iext_get_ext(ifp, bma->idx + 1);
719 xfs_bmbt_set_startblock(ep, nullstartblock(da_new));
720 trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_);
721 break;
722
723 case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG:
724
725
726
727
728 temp = PREV.br_blockcount - new->br_blockcount;
729 trace_xfs_bmap_pre_update(bma->ip, bma->idx + 1, state, _THIS_IP_);
730 xfs_bmbt_set_blockcount(ep, temp);
731 xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx + 1),
732 new->br_startoff, new->br_startblock,
733 new->br_blockcount + RIGHT.br_blockcount,
734 RIGHT.br_state);
735 trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_);
736 if (bma->cur == NULL)
737 rval = XFS_ILOG_DEXT;
738 else {
739 rval = 0;
740 error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff,
741 RIGHT.br_startblock,
742 RIGHT.br_blockcount, &i);
743 if (error)
744 goto done;
745 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
746 error = xfs_bmbt_update(bma->cur, new->br_startoff,
747 new->br_startblock,
748 new->br_blockcount +
749 RIGHT.br_blockcount,
750 RIGHT.br_state);
751 if (error)
752 goto done;
753 }
754
755 da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp),
756 startblockval(PREV.br_startblock));
757 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
758 xfs_bmbt_set_startblock(ep, nullstartblock(da_new));
759 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
760
761 bma->idx++;
762 break;
763
764 case BMAP_RIGHT_FILLING:
765
766
767
768
769 temp = PREV.br_blockcount - new->br_blockcount;
770 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
771 xfs_bmbt_set_blockcount(ep, temp);
772 xfs_iext_insert(bma->ip, bma->idx + 1, 1, new, state);
773 bma->ip->i_d.di_nextents++;
774 if (bma->cur == NULL)
775 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
776 else {
777 rval = XFS_ILOG_CORE;
778 error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff,
779 new->br_startblock, new->br_blockcount,
780 &i);
781 if (error)
782 goto done;
783 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
784 bma->cur->bc_rec.b.br_state = XFS_EXT_NORM;
785 error = xfs_btree_insert(bma->cur, &i);
786 if (error)
787 goto done;
788 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
789 }
790
791 if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
792 error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
793 bma->firstblock, bma->flist, &bma->cur, 1,
794 &tmp_rval, XFS_DATA_FORK);
795 rval |= tmp_rval;
796 if (error)
797 goto done;
798 }
799 da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp),
800 startblockval(PREV.br_startblock) -
801 (bma->cur ? bma->cur->bc_private.b.allocated : 0));
802 ep = xfs_iext_get_ext(ifp, bma->idx);
803 xfs_bmbt_set_startblock(ep, nullstartblock(da_new));
804 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
805
806 bma->idx++;
807 break;
808
809 case 0:
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830 temp = new->br_startoff - PREV.br_startoff;
831 temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff;
832 trace_xfs_bmap_pre_update(bma->ip, bma->idx, 0, _THIS_IP_);
833 xfs_bmbt_set_blockcount(ep, temp);
834 LEFT = *new;
835 RIGHT.br_state = PREV.br_state;
836 RIGHT.br_startblock = nullstartblock(
837 (int)xfs_bmap_worst_indlen(bma->ip, temp2));
838 RIGHT.br_startoff = new_endoff;
839 RIGHT.br_blockcount = temp2;
840
841 xfs_iext_insert(bma->ip, bma->idx + 1, 2, &LEFT, state);
842 bma->ip->i_d.di_nextents++;
843 if (bma->cur == NULL)
844 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
845 else {
846 rval = XFS_ILOG_CORE;
847 error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff,
848 new->br_startblock, new->br_blockcount,
849 &i);
850 if (error)
851 goto done;
852 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
853 bma->cur->bc_rec.b.br_state = XFS_EXT_NORM;
854 error = xfs_btree_insert(bma->cur, &i);
855 if (error)
856 goto done;
857 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
858 }
859
860 if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
861 error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
862 bma->firstblock, bma->flist, &bma->cur,
863 1, &tmp_rval, XFS_DATA_FORK);
864 rval |= tmp_rval;
865 if (error)
866 goto done;
867 }
868 temp = xfs_bmap_worst_indlen(bma->ip, temp);
869 temp2 = xfs_bmap_worst_indlen(bma->ip, temp2);
870 diff = (int)(temp + temp2 - startblockval(PREV.br_startblock) -
871 (bma->cur ? bma->cur->bc_private.b.allocated : 0));
872 if (diff > 0) {
873 error = xfs_icsb_modify_counters(bma->ip->i_mount,
874 XFS_SBS_FDBLOCKS,
875 -((int64_t)diff), 0);
876 ASSERT(!error);
877 if (error)
878 goto done;
879 }
880
881 ep = xfs_iext_get_ext(ifp, bma->idx);
882 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
883 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
884 trace_xfs_bmap_pre_update(bma->ip, bma->idx + 2, state, _THIS_IP_);
885 xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, bma->idx + 2),
886 nullstartblock((int)temp2));
887 trace_xfs_bmap_post_update(bma->ip, bma->idx + 2, state, _THIS_IP_);
888
889 bma->idx++;
890 da_new = temp + temp2;
891 break;
892
893 case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
894 case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
895 case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG:
896 case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG:
897 case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
898 case BMAP_LEFT_CONTIG:
899 case BMAP_RIGHT_CONTIG:
900
901
902
903 ASSERT(0);
904 }
905
906
907 if (xfs_bmap_needs_btree(bma->ip, XFS_DATA_FORK)) {
908 int tmp_logflags;
909
910 ASSERT(bma->cur == NULL);
911 error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
912 bma->firstblock, bma->flist, &bma->cur,
913 da_old > 0, &tmp_logflags, XFS_DATA_FORK);
914 bma->logflags |= tmp_logflags;
915 if (error)
916 goto done;
917 }
918
919
920 if (da_old || da_new) {
921 temp = da_new;
922 if (bma->cur)
923 temp += bma->cur->bc_private.b.allocated;
924 ASSERT(temp <= da_old);
925 if (temp < da_old)
926 xfs_icsb_modify_counters(bma->ip->i_mount,
927 XFS_SBS_FDBLOCKS,
928 (int64_t)(da_old - temp), 0);
929 }
930
931
932 if (bma->cur)
933 bma->cur->bc_private.b.allocated = 0;
934
935 xfs_bmap_check_leaf_extents(bma->cur, bma->ip, XFS_DATA_FORK);
936done:
937 bma->logflags |= rval;
938 return error;
939#undef LEFT
940#undef RIGHT
941#undef PREV
942}
943
944
945
946
947STATIC int
948xfs_bmap_add_extent_unwritten_real(
949 struct xfs_trans *tp,
950 xfs_inode_t *ip,
951 xfs_extnum_t *idx,
952 xfs_btree_cur_t **curp,
953 xfs_bmbt_irec_t *new,
954 xfs_fsblock_t *first,
955 xfs_bmap_free_t *flist,
956 int *logflagsp)
957{
958 xfs_btree_cur_t *cur;
959 xfs_bmbt_rec_host_t *ep;
960 int error;
961 int i;
962 xfs_ifork_t *ifp;
963 xfs_fileoff_t new_endoff;
964 xfs_exntst_t newext;
965 xfs_exntst_t oldext;
966 xfs_bmbt_irec_t r[3];
967
968 int rval=0;
969 int state = 0;
970
971 *logflagsp = 0;
972
973 cur = *curp;
974 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
975
976 ASSERT(*idx >= 0);
977 ASSERT(*idx <= ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
978 ASSERT(!isnullstartblock(new->br_startblock));
979
980 XFS_STATS_INC(xs_add_exlist);
981
982#define LEFT r[0]
983#define RIGHT r[1]
984#define PREV r[2]
985
986
987
988
989 error = 0;
990 ep = xfs_iext_get_ext(ifp, *idx);
991 xfs_bmbt_get_all(ep, &PREV);
992 newext = new->br_state;
993 oldext = (newext == XFS_EXT_UNWRITTEN) ?
994 XFS_EXT_NORM : XFS_EXT_UNWRITTEN;
995 ASSERT(PREV.br_state == oldext);
996 new_endoff = new->br_startoff + new->br_blockcount;
997 ASSERT(PREV.br_startoff <= new->br_startoff);
998 ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff);
999
1000
1001
1002
1003
1004 if (PREV.br_startoff == new->br_startoff)
1005 state |= BMAP_LEFT_FILLING;
1006 if (PREV.br_startoff + PREV.br_blockcount == new_endoff)
1007 state |= BMAP_RIGHT_FILLING;
1008
1009
1010
1011
1012
1013 if (*idx > 0) {
1014 state |= BMAP_LEFT_VALID;
1015 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &LEFT);
1016
1017 if (isnullstartblock(LEFT.br_startblock))
1018 state |= BMAP_LEFT_DELAY;
1019 }
1020
1021 if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) &&
1022 LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff &&
1023 LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock &&
1024 LEFT.br_state == newext &&
1025 LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN)
1026 state |= BMAP_LEFT_CONTIG;
1027
1028
1029
1030
1031
1032
1033 if (*idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t) - 1) {
1034 state |= BMAP_RIGHT_VALID;
1035 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx + 1), &RIGHT);
1036 if (isnullstartblock(RIGHT.br_startblock))
1037 state |= BMAP_RIGHT_DELAY;
1038 }
1039
1040 if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) &&
1041 new_endoff == RIGHT.br_startoff &&
1042 new->br_startblock + new->br_blockcount == RIGHT.br_startblock &&
1043 newext == RIGHT.br_state &&
1044 new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN &&
1045 ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
1046 BMAP_RIGHT_FILLING)) !=
1047 (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING |
1048 BMAP_RIGHT_FILLING) ||
1049 LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount
1050 <= MAXEXTLEN))
1051 state |= BMAP_RIGHT_CONTIG;
1052
1053
1054
1055
1056 switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG |
1057 BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) {
1058 case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG |
1059 BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG:
1060
1061
1062
1063
1064 --*idx;
1065
1066 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1067 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx),
1068 LEFT.br_blockcount + PREV.br_blockcount +
1069 RIGHT.br_blockcount);
1070 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1071
1072 xfs_iext_remove(ip, *idx + 1, 2, state);
1073 ip->i_d.di_nextents -= 2;
1074 if (cur == NULL)
1075 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1076 else {
1077 rval = XFS_ILOG_CORE;
1078 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
1079 RIGHT.br_startblock,
1080 RIGHT.br_blockcount, &i)))
1081 goto done;
1082 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1083 if ((error = xfs_btree_delete(cur, &i)))
1084 goto done;
1085 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1086 if ((error = xfs_btree_decrement(cur, 0, &i)))
1087 goto done;
1088 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1089 if ((error = xfs_btree_delete(cur, &i)))
1090 goto done;
1091 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1092 if ((error = xfs_btree_decrement(cur, 0, &i)))
1093 goto done;
1094 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1095 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
1096 LEFT.br_startblock,
1097 LEFT.br_blockcount + PREV.br_blockcount +
1098 RIGHT.br_blockcount, LEFT.br_state)))
1099 goto done;
1100 }
1101 break;
1102
1103 case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG:
1104
1105
1106
1107
1108 --*idx;
1109
1110 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1111 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx),
1112 LEFT.br_blockcount + PREV.br_blockcount);
1113 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1114
1115 xfs_iext_remove(ip, *idx + 1, 1, state);
1116 ip->i_d.di_nextents--;
1117 if (cur == NULL)
1118 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1119 else {
1120 rval = XFS_ILOG_CORE;
1121 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1122 PREV.br_startblock, PREV.br_blockcount,
1123 &i)))
1124 goto done;
1125 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1126 if ((error = xfs_btree_delete(cur, &i)))
1127 goto done;
1128 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1129 if ((error = xfs_btree_decrement(cur, 0, &i)))
1130 goto done;
1131 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1132 if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
1133 LEFT.br_startblock,
1134 LEFT.br_blockcount + PREV.br_blockcount,
1135 LEFT.br_state)))
1136 goto done;
1137 }
1138 break;
1139
1140 case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG:
1141
1142
1143
1144
1145 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1146 xfs_bmbt_set_blockcount(ep,
1147 PREV.br_blockcount + RIGHT.br_blockcount);
1148 xfs_bmbt_set_state(ep, newext);
1149 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1150 xfs_iext_remove(ip, *idx + 1, 1, state);
1151 ip->i_d.di_nextents--;
1152 if (cur == NULL)
1153 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1154 else {
1155 rval = XFS_ILOG_CORE;
1156 if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff,
1157 RIGHT.br_startblock,
1158 RIGHT.br_blockcount, &i)))
1159 goto done;
1160 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1161 if ((error = xfs_btree_delete(cur, &i)))
1162 goto done;
1163 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1164 if ((error = xfs_btree_decrement(cur, 0, &i)))
1165 goto done;
1166 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1167 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1168 new->br_startblock,
1169 new->br_blockcount + RIGHT.br_blockcount,
1170 newext)))
1171 goto done;
1172 }
1173 break;
1174
1175 case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING:
1176
1177
1178
1179
1180
1181 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1182 xfs_bmbt_set_state(ep, newext);
1183 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1184
1185 if (cur == NULL)
1186 rval = XFS_ILOG_DEXT;
1187 else {
1188 rval = 0;
1189 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1190 new->br_startblock, new->br_blockcount,
1191 &i)))
1192 goto done;
1193 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1194 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1195 new->br_startblock, new->br_blockcount,
1196 newext)))
1197 goto done;
1198 }
1199 break;
1200
1201 case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG:
1202
1203
1204
1205
1206 trace_xfs_bmap_pre_update(ip, *idx - 1, state, _THIS_IP_);
1207 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx - 1),
1208 LEFT.br_blockcount + new->br_blockcount);
1209 xfs_bmbt_set_startoff(ep,
1210 PREV.br_startoff + new->br_blockcount);
1211 trace_xfs_bmap_post_update(ip, *idx - 1, state, _THIS_IP_);
1212
1213 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1214 xfs_bmbt_set_startblock(ep,
1215 new->br_startblock + new->br_blockcount);
1216 xfs_bmbt_set_blockcount(ep,
1217 PREV.br_blockcount - new->br_blockcount);
1218 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1219
1220 --*idx;
1221
1222 if (cur == NULL)
1223 rval = XFS_ILOG_DEXT;
1224 else {
1225 rval = 0;
1226 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1227 PREV.br_startblock, PREV.br_blockcount,
1228 &i)))
1229 goto done;
1230 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1231 if ((error = xfs_bmbt_update(cur,
1232 PREV.br_startoff + new->br_blockcount,
1233 PREV.br_startblock + new->br_blockcount,
1234 PREV.br_blockcount - new->br_blockcount,
1235 oldext)))
1236 goto done;
1237 if ((error = xfs_btree_decrement(cur, 0, &i)))
1238 goto done;
1239 error = xfs_bmbt_update(cur, LEFT.br_startoff,
1240 LEFT.br_startblock,
1241 LEFT.br_blockcount + new->br_blockcount,
1242 LEFT.br_state);
1243 if (error)
1244 goto done;
1245 }
1246 break;
1247
1248 case BMAP_LEFT_FILLING:
1249
1250
1251
1252
1253 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1254 ASSERT(ep && xfs_bmbt_get_state(ep) == oldext);
1255 xfs_bmbt_set_startoff(ep, new_endoff);
1256 xfs_bmbt_set_blockcount(ep,
1257 PREV.br_blockcount - new->br_blockcount);
1258 xfs_bmbt_set_startblock(ep,
1259 new->br_startblock + new->br_blockcount);
1260 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1261
1262 xfs_iext_insert(ip, *idx, 1, new, state);
1263 ip->i_d.di_nextents++;
1264 if (cur == NULL)
1265 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1266 else {
1267 rval = XFS_ILOG_CORE;
1268 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1269 PREV.br_startblock, PREV.br_blockcount,
1270 &i)))
1271 goto done;
1272 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1273 if ((error = xfs_bmbt_update(cur,
1274 PREV.br_startoff + new->br_blockcount,
1275 PREV.br_startblock + new->br_blockcount,
1276 PREV.br_blockcount - new->br_blockcount,
1277 oldext)))
1278 goto done;
1279 cur->bc_rec.b = *new;
1280 if ((error = xfs_btree_insert(cur, &i)))
1281 goto done;
1282 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1283 }
1284 break;
1285
1286 case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG:
1287
1288
1289
1290
1291 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1292 xfs_bmbt_set_blockcount(ep,
1293 PREV.br_blockcount - new->br_blockcount);
1294 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1295
1296 ++*idx;
1297
1298 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1299 xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx),
1300 new->br_startoff, new->br_startblock,
1301 new->br_blockcount + RIGHT.br_blockcount, newext);
1302 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1303
1304 if (cur == NULL)
1305 rval = XFS_ILOG_DEXT;
1306 else {
1307 rval = 0;
1308 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1309 PREV.br_startblock,
1310 PREV.br_blockcount, &i)))
1311 goto done;
1312 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1313 if ((error = xfs_bmbt_update(cur, PREV.br_startoff,
1314 PREV.br_startblock,
1315 PREV.br_blockcount - new->br_blockcount,
1316 oldext)))
1317 goto done;
1318 if ((error = xfs_btree_increment(cur, 0, &i)))
1319 goto done;
1320 if ((error = xfs_bmbt_update(cur, new->br_startoff,
1321 new->br_startblock,
1322 new->br_blockcount + RIGHT.br_blockcount,
1323 newext)))
1324 goto done;
1325 }
1326 break;
1327
1328 case BMAP_RIGHT_FILLING:
1329
1330
1331
1332
1333 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1334 xfs_bmbt_set_blockcount(ep,
1335 PREV.br_blockcount - new->br_blockcount);
1336 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1337
1338 ++*idx;
1339 xfs_iext_insert(ip, *idx, 1, new, state);
1340
1341 ip->i_d.di_nextents++;
1342 if (cur == NULL)
1343 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1344 else {
1345 rval = XFS_ILOG_CORE;
1346 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1347 PREV.br_startblock, PREV.br_blockcount,
1348 &i)))
1349 goto done;
1350 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1351 if ((error = xfs_bmbt_update(cur, PREV.br_startoff,
1352 PREV.br_startblock,
1353 PREV.br_blockcount - new->br_blockcount,
1354 oldext)))
1355 goto done;
1356 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1357 new->br_startblock, new->br_blockcount,
1358 &i)))
1359 goto done;
1360 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1361 cur->bc_rec.b.br_state = XFS_EXT_NORM;
1362 if ((error = xfs_btree_insert(cur, &i)))
1363 goto done;
1364 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1365 }
1366 break;
1367
1368 case 0:
1369
1370
1371
1372
1373
1374 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1375 xfs_bmbt_set_blockcount(ep,
1376 new->br_startoff - PREV.br_startoff);
1377 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1378
1379 r[0] = *new;
1380 r[1].br_startoff = new_endoff;
1381 r[1].br_blockcount =
1382 PREV.br_startoff + PREV.br_blockcount - new_endoff;
1383 r[1].br_startblock = new->br_startblock + new->br_blockcount;
1384 r[1].br_state = oldext;
1385
1386 ++*idx;
1387 xfs_iext_insert(ip, *idx, 2, &r[0], state);
1388
1389 ip->i_d.di_nextents += 2;
1390 if (cur == NULL)
1391 rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
1392 else {
1393 rval = XFS_ILOG_CORE;
1394 if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff,
1395 PREV.br_startblock, PREV.br_blockcount,
1396 &i)))
1397 goto done;
1398 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1399
1400 if ((error = xfs_bmbt_update(cur, r[1].br_startoff,
1401 r[1].br_startblock, r[1].br_blockcount,
1402 r[1].br_state)))
1403 goto done;
1404
1405 cur->bc_rec.b = PREV;
1406 cur->bc_rec.b.br_blockcount =
1407 new->br_startoff - PREV.br_startoff;
1408 if ((error = xfs_btree_insert(cur, &i)))
1409 goto done;
1410 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1411
1412
1413
1414
1415
1416 if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
1417 new->br_startblock, new->br_blockcount,
1418 &i)))
1419 goto done;
1420 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1421
1422 cur->bc_rec.b.br_state = new->br_state;
1423 if ((error = xfs_btree_insert(cur, &i)))
1424 goto done;
1425 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1426 }
1427 break;
1428
1429 case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
1430 case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
1431 case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG:
1432 case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG:
1433 case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
1434 case BMAP_LEFT_CONTIG:
1435 case BMAP_RIGHT_CONTIG:
1436
1437
1438
1439 ASSERT(0);
1440 }
1441
1442
1443 if (xfs_bmap_needs_btree(ip, XFS_DATA_FORK)) {
1444 int tmp_logflags;
1445
1446 ASSERT(cur == NULL);
1447 error = xfs_bmap_extents_to_btree(tp, ip, first, flist, &cur,
1448 0, &tmp_logflags, XFS_DATA_FORK);
1449 *logflagsp |= tmp_logflags;
1450 if (error)
1451 goto done;
1452 }
1453
1454
1455 if (cur) {
1456 cur->bc_private.b.allocated = 0;
1457 *curp = cur;
1458 }
1459
1460 xfs_bmap_check_leaf_extents(*curp, ip, XFS_DATA_FORK);
1461done:
1462 *logflagsp |= rval;
1463 return error;
1464#undef LEFT
1465#undef RIGHT
1466#undef PREV
1467}
1468
1469
1470
1471
1472STATIC void
1473xfs_bmap_add_extent_hole_delay(
1474 xfs_inode_t *ip,
1475 xfs_extnum_t *idx,
1476 xfs_bmbt_irec_t *new)
1477{
1478 xfs_ifork_t *ifp;
1479 xfs_bmbt_irec_t left;
1480 xfs_filblks_t newlen=0;
1481 xfs_filblks_t oldlen=0;
1482 xfs_bmbt_irec_t right;
1483 int state;
1484 xfs_filblks_t temp=0;
1485
1486 ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
1487 state = 0;
1488 ASSERT(isnullstartblock(new->br_startblock));
1489
1490
1491
1492
1493 if (*idx > 0) {
1494 state |= BMAP_LEFT_VALID;
1495 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &left);
1496
1497 if (isnullstartblock(left.br_startblock))
1498 state |= BMAP_LEFT_DELAY;
1499 }
1500
1501
1502
1503
1504
1505 if (*idx < ip->i_df.if_bytes / (uint)sizeof(xfs_bmbt_rec_t)) {
1506 state |= BMAP_RIGHT_VALID;
1507 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx), &right);
1508
1509 if (isnullstartblock(right.br_startblock))
1510 state |= BMAP_RIGHT_DELAY;
1511 }
1512
1513
1514
1515
1516
1517 if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) &&
1518 left.br_startoff + left.br_blockcount == new->br_startoff &&
1519 left.br_blockcount + new->br_blockcount <= MAXEXTLEN)
1520 state |= BMAP_LEFT_CONTIG;
1521
1522 if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) &&
1523 new->br_startoff + new->br_blockcount == right.br_startoff &&
1524 new->br_blockcount + right.br_blockcount <= MAXEXTLEN &&
1525 (!(state & BMAP_LEFT_CONTIG) ||
1526 (left.br_blockcount + new->br_blockcount +
1527 right.br_blockcount <= MAXEXTLEN)))
1528 state |= BMAP_RIGHT_CONTIG;
1529
1530
1531
1532
1533 switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) {
1534 case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
1535
1536
1537
1538
1539
1540 --*idx;
1541 temp = left.br_blockcount + new->br_blockcount +
1542 right.br_blockcount;
1543
1544 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1545 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp);
1546 oldlen = startblockval(left.br_startblock) +
1547 startblockval(new->br_startblock) +
1548 startblockval(right.br_startblock);
1549 newlen = xfs_bmap_worst_indlen(ip, temp);
1550 xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx),
1551 nullstartblock((int)newlen));
1552 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1553
1554 xfs_iext_remove(ip, *idx + 1, 1, state);
1555 break;
1556
1557 case BMAP_LEFT_CONTIG:
1558
1559
1560
1561
1562
1563 --*idx;
1564 temp = left.br_blockcount + new->br_blockcount;
1565
1566 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1567 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp);
1568 oldlen = startblockval(left.br_startblock) +
1569 startblockval(new->br_startblock);
1570 newlen = xfs_bmap_worst_indlen(ip, temp);
1571 xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx),
1572 nullstartblock((int)newlen));
1573 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1574 break;
1575
1576 case BMAP_RIGHT_CONTIG:
1577
1578
1579
1580
1581
1582 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
1583 temp = new->br_blockcount + right.br_blockcount;
1584 oldlen = startblockval(new->br_startblock) +
1585 startblockval(right.br_startblock);
1586 newlen = xfs_bmap_worst_indlen(ip, temp);
1587 xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx),
1588 new->br_startoff,
1589 nullstartblock((int)newlen), temp, right.br_state);
1590 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
1591 break;
1592
1593 case 0:
1594
1595
1596
1597
1598
1599 oldlen = newlen = 0;
1600 xfs_iext_insert(ip, *idx, 1, new, state);
1601 break;
1602 }
1603 if (oldlen != newlen) {
1604 ASSERT(oldlen > newlen);
1605 xfs_icsb_modify_counters(ip->i_mount, XFS_SBS_FDBLOCKS,
1606 (int64_t)(oldlen - newlen), 0);
1607
1608
1609
1610 }
1611}
1612
1613
1614
1615
1616STATIC int
1617xfs_bmap_add_extent_hole_real(
1618 struct xfs_bmalloca *bma,
1619 int whichfork)
1620{
1621 struct xfs_bmbt_irec *new = &bma->got;
1622 int error;
1623 int i;
1624 xfs_ifork_t *ifp;
1625 xfs_bmbt_irec_t left;
1626 xfs_bmbt_irec_t right;
1627 int rval=0;
1628 int state;
1629
1630 ifp = XFS_IFORK_PTR(bma->ip, whichfork);
1631
1632 ASSERT(bma->idx >= 0);
1633 ASSERT(bma->idx <= ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
1634 ASSERT(!isnullstartblock(new->br_startblock));
1635 ASSERT(!bma->cur ||
1636 !(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL));
1637
1638 XFS_STATS_INC(xs_add_exlist);
1639
1640 state = 0;
1641 if (whichfork == XFS_ATTR_FORK)
1642 state |= BMAP_ATTRFORK;
1643
1644
1645
1646
1647 if (bma->idx > 0) {
1648 state |= BMAP_LEFT_VALID;
1649 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &left);
1650 if (isnullstartblock(left.br_startblock))
1651 state |= BMAP_LEFT_DELAY;
1652 }
1653
1654
1655
1656
1657
1658 if (bma->idx < ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)) {
1659 state |= BMAP_RIGHT_VALID;
1660 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &right);
1661 if (isnullstartblock(right.br_startblock))
1662 state |= BMAP_RIGHT_DELAY;
1663 }
1664
1665
1666
1667
1668
1669 if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) &&
1670 left.br_startoff + left.br_blockcount == new->br_startoff &&
1671 left.br_startblock + left.br_blockcount == new->br_startblock &&
1672 left.br_state == new->br_state &&
1673 left.br_blockcount + new->br_blockcount <= MAXEXTLEN)
1674 state |= BMAP_LEFT_CONTIG;
1675
1676 if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) &&
1677 new->br_startoff + new->br_blockcount == right.br_startoff &&
1678 new->br_startblock + new->br_blockcount == right.br_startblock &&
1679 new->br_state == right.br_state &&
1680 new->br_blockcount + right.br_blockcount <= MAXEXTLEN &&
1681 (!(state & BMAP_LEFT_CONTIG) ||
1682 left.br_blockcount + new->br_blockcount +
1683 right.br_blockcount <= MAXEXTLEN))
1684 state |= BMAP_RIGHT_CONTIG;
1685
1686 error = 0;
1687
1688
1689
1690 switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) {
1691 case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
1692
1693
1694
1695
1696
1697 --bma->idx;
1698 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
1699 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx),
1700 left.br_blockcount + new->br_blockcount +
1701 right.br_blockcount);
1702 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
1703
1704 xfs_iext_remove(bma->ip, bma->idx + 1, 1, state);
1705
1706 XFS_IFORK_NEXT_SET(bma->ip, whichfork,
1707 XFS_IFORK_NEXTENTS(bma->ip, whichfork) - 1);
1708 if (bma->cur == NULL) {
1709 rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
1710 } else {
1711 rval = XFS_ILOG_CORE;
1712 error = xfs_bmbt_lookup_eq(bma->cur, right.br_startoff,
1713 right.br_startblock, right.br_blockcount,
1714 &i);
1715 if (error)
1716 goto done;
1717 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1718 error = xfs_btree_delete(bma->cur, &i);
1719 if (error)
1720 goto done;
1721 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1722 error = xfs_btree_decrement(bma->cur, 0, &i);
1723 if (error)
1724 goto done;
1725 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1726 error = xfs_bmbt_update(bma->cur, left.br_startoff,
1727 left.br_startblock,
1728 left.br_blockcount +
1729 new->br_blockcount +
1730 right.br_blockcount,
1731 left.br_state);
1732 if (error)
1733 goto done;
1734 }
1735 break;
1736
1737 case BMAP_LEFT_CONTIG:
1738
1739
1740
1741
1742
1743 --bma->idx;
1744 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
1745 xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx),
1746 left.br_blockcount + new->br_blockcount);
1747 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
1748
1749 if (bma->cur == NULL) {
1750 rval = xfs_ilog_fext(whichfork);
1751 } else {
1752 rval = 0;
1753 error = xfs_bmbt_lookup_eq(bma->cur, left.br_startoff,
1754 left.br_startblock, left.br_blockcount,
1755 &i);
1756 if (error)
1757 goto done;
1758 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1759 error = xfs_bmbt_update(bma->cur, left.br_startoff,
1760 left.br_startblock,
1761 left.br_blockcount +
1762 new->br_blockcount,
1763 left.br_state);
1764 if (error)
1765 goto done;
1766 }
1767 break;
1768
1769 case BMAP_RIGHT_CONTIG:
1770
1771
1772
1773
1774
1775 trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_);
1776 xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx),
1777 new->br_startoff, new->br_startblock,
1778 new->br_blockcount + right.br_blockcount,
1779 right.br_state);
1780 trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_);
1781
1782 if (bma->cur == NULL) {
1783 rval = xfs_ilog_fext(whichfork);
1784 } else {
1785 rval = 0;
1786 error = xfs_bmbt_lookup_eq(bma->cur,
1787 right.br_startoff,
1788 right.br_startblock,
1789 right.br_blockcount, &i);
1790 if (error)
1791 goto done;
1792 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1793 error = xfs_bmbt_update(bma->cur, new->br_startoff,
1794 new->br_startblock,
1795 new->br_blockcount +
1796 right.br_blockcount,
1797 right.br_state);
1798 if (error)
1799 goto done;
1800 }
1801 break;
1802
1803 case 0:
1804
1805
1806
1807
1808
1809 xfs_iext_insert(bma->ip, bma->idx, 1, new, state);
1810 XFS_IFORK_NEXT_SET(bma->ip, whichfork,
1811 XFS_IFORK_NEXTENTS(bma->ip, whichfork) + 1);
1812 if (bma->cur == NULL) {
1813 rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
1814 } else {
1815 rval = XFS_ILOG_CORE;
1816 error = xfs_bmbt_lookup_eq(bma->cur,
1817 new->br_startoff,
1818 new->br_startblock,
1819 new->br_blockcount, &i);
1820 if (error)
1821 goto done;
1822 XFS_WANT_CORRUPTED_GOTO(i == 0, done);
1823 bma->cur->bc_rec.b.br_state = new->br_state;
1824 error = xfs_btree_insert(bma->cur, &i);
1825 if (error)
1826 goto done;
1827 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
1828 }
1829 break;
1830 }
1831
1832
1833 if (xfs_bmap_needs_btree(bma->ip, whichfork)) {
1834 int tmp_logflags;
1835
1836 ASSERT(bma->cur == NULL);
1837 error = xfs_bmap_extents_to_btree(bma->tp, bma->ip,
1838 bma->firstblock, bma->flist, &bma->cur,
1839 0, &tmp_logflags, whichfork);
1840 bma->logflags |= tmp_logflags;
1841 if (error)
1842 goto done;
1843 }
1844
1845
1846 if (bma->cur)
1847 bma->cur->bc_private.b.allocated = 0;
1848
1849 xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork);
1850done:
1851 bma->logflags |= rval;
1852 return error;
1853}
1854
1855
1856
1857
1858STATIC int
1859xfs_bmap_extsize_align(
1860 xfs_mount_t *mp,
1861 xfs_bmbt_irec_t *gotp,
1862 xfs_bmbt_irec_t *prevp,
1863 xfs_extlen_t extsz,
1864 int rt,
1865 int eof,
1866 int delay,
1867 int convert,
1868 xfs_fileoff_t *offp,
1869 xfs_extlen_t *lenp)
1870{
1871 xfs_fileoff_t orig_off;
1872 xfs_extlen_t orig_alen;
1873 xfs_fileoff_t orig_end;
1874 xfs_fileoff_t nexto;
1875 xfs_fileoff_t prevo;
1876 xfs_fileoff_t align_off;
1877 xfs_extlen_t align_alen;
1878 xfs_extlen_t temp;
1879
1880 if (convert)
1881 return 0;
1882
1883 orig_off = align_off = *offp;
1884 orig_alen = align_alen = *lenp;
1885 orig_end = orig_off + orig_alen;
1886
1887
1888
1889
1890
1891 if (!delay && !eof &&
1892 (orig_off >= gotp->br_startoff) &&
1893 (orig_end <= gotp->br_startoff + gotp->br_blockcount)) {
1894 return 0;
1895 }
1896
1897
1898
1899
1900
1901
1902
1903
1904 temp = do_mod(orig_off, extsz);
1905 if (temp) {
1906 align_alen += temp;
1907 align_off -= temp;
1908 }
1909
1910
1911
1912 if ((temp = (align_alen % extsz))) {
1913 align_alen += extsz - temp;
1914 }
1915
1916
1917
1918
1919 if (prevp->br_startoff != NULLFILEOFF) {
1920 if (prevp->br_startblock == HOLESTARTBLOCK)
1921 prevo = prevp->br_startoff;
1922 else
1923 prevo = prevp->br_startoff + prevp->br_blockcount;
1924 } else
1925 prevo = 0;
1926 if (align_off != orig_off && align_off < prevo)
1927 align_off = prevo;
1928
1929
1930
1931
1932
1933
1934
1935
1936 if (!eof && gotp->br_startoff != NULLFILEOFF) {
1937 if ((delay && gotp->br_startblock == HOLESTARTBLOCK) ||
1938 (!delay && gotp->br_startblock == DELAYSTARTBLOCK))
1939 nexto = gotp->br_startoff + gotp->br_blockcount;
1940 else
1941 nexto = gotp->br_startoff;
1942 } else
1943 nexto = NULLFILEOFF;
1944 if (!eof &&
1945 align_off + align_alen != orig_end &&
1946 align_off + align_alen > nexto)
1947 align_off = nexto > align_alen ? nexto - align_alen : 0;
1948
1949
1950
1951
1952
1953
1954 if (align_off != orig_off && align_off < prevo)
1955 align_off = prevo;
1956 if (align_off + align_alen != orig_end &&
1957 align_off + align_alen > nexto &&
1958 nexto != NULLFILEOFF) {
1959 ASSERT(nexto > prevo);
1960 align_alen = nexto - align_off;
1961 }
1962
1963
1964
1965
1966
1967 if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) {
1968
1969
1970
1971
1972 if (orig_off < align_off ||
1973 orig_end > align_off + align_alen ||
1974 align_alen - temp < orig_alen)
1975 return XFS_ERROR(EINVAL);
1976
1977
1978
1979 if (align_off + temp <= orig_off) {
1980 align_alen -= temp;
1981 align_off += temp;
1982 }
1983
1984
1985
1986 else if (align_off + align_alen - temp >= orig_end)
1987 align_alen -= temp;
1988
1989
1990
1991 else {
1992 align_alen -= orig_off - align_off;
1993 align_off = orig_off;
1994 align_alen -= align_alen % mp->m_sb.sb_rextsize;
1995 }
1996
1997
1998
1999 if (orig_off < align_off || orig_end > align_off + align_alen)
2000 return XFS_ERROR(EINVAL);
2001 } else {
2002 ASSERT(orig_off >= align_off);
2003 ASSERT(orig_end <= align_off + align_alen);
2004 }
2005
2006#ifdef DEBUG
2007 if (!eof && gotp->br_startoff != NULLFILEOFF)
2008 ASSERT(align_off + align_alen <= gotp->br_startoff);
2009 if (prevp->br_startoff != NULLFILEOFF)
2010 ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount);
2011#endif
2012
2013 *lenp = align_alen;
2014 *offp = align_off;
2015 return 0;
2016}
2017
2018#define XFS_ALLOC_GAP_UNITS 4
2019
2020STATIC void
2021xfs_bmap_adjacent(
2022 xfs_bmalloca_t *ap)
2023{
2024 xfs_fsblock_t adjust;
2025 xfs_agnumber_t fb_agno;
2026 xfs_mount_t *mp;
2027 int nullfb;
2028 int rt;
2029
2030#define ISVALID(x,y) \
2031 (rt ? \
2032 (x) < mp->m_sb.sb_rblocks : \
2033 XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \
2034 XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \
2035 XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks)
2036
2037 mp = ap->ip->i_mount;
2038 nullfb = *ap->firstblock == NULLFSBLOCK;
2039 rt = XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata;
2040 fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock);
2041
2042
2043
2044
2045 if (ap->eof && ap->prev.br_startoff != NULLFILEOFF &&
2046 !isnullstartblock(ap->prev.br_startblock) &&
2047 ISVALID(ap->prev.br_startblock + ap->prev.br_blockcount,
2048 ap->prev.br_startblock)) {
2049 ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount;
2050
2051
2052
2053 adjust = ap->offset -
2054 (ap->prev.br_startoff + ap->prev.br_blockcount);
2055 if (adjust &&
2056 ISVALID(ap->blkno + adjust, ap->prev.br_startblock))
2057 ap->blkno += adjust;
2058 }
2059
2060
2061
2062
2063
2064 else if (!ap->eof) {
2065 xfs_fsblock_t gotbno;
2066 xfs_fsblock_t gotdiff=0;
2067 xfs_fsblock_t prevbno;
2068 xfs_fsblock_t prevdiff=0;
2069
2070
2071
2072
2073
2074 if (ap->prev.br_startoff != NULLFILEOFF &&
2075 !isnullstartblock(ap->prev.br_startblock) &&
2076 (prevbno = ap->prev.br_startblock +
2077 ap->prev.br_blockcount) &&
2078 ISVALID(prevbno, ap->prev.br_startblock)) {
2079
2080
2081
2082 adjust = prevdiff = ap->offset -
2083 (ap->prev.br_startoff +
2084 ap->prev.br_blockcount);
2085
2086
2087
2088
2089
2090
2091
2092
2093 if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length &&
2094 ISVALID(prevbno + prevdiff,
2095 ap->prev.br_startblock))
2096 prevbno += adjust;
2097 else
2098 prevdiff += adjust;
2099
2100
2101
2102
2103 if (!rt && !nullfb &&
2104 XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno)
2105 prevbno = NULLFSBLOCK;
2106 }
2107
2108
2109
2110 else
2111 prevbno = NULLFSBLOCK;
2112
2113
2114
2115
2116 if (!isnullstartblock(ap->got.br_startblock)) {
2117
2118
2119
2120 adjust = gotdiff = ap->got.br_startoff - ap->offset;
2121
2122
2123
2124
2125 gotbno = ap->got.br_startblock;
2126
2127
2128
2129
2130
2131
2132
2133 if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length &&
2134 ISVALID(gotbno - gotdiff, gotbno))
2135 gotbno -= adjust;
2136 else if (ISVALID(gotbno - ap->length, gotbno)) {
2137 gotbno -= ap->length;
2138 gotdiff += adjust - ap->length;
2139 } else
2140 gotdiff += adjust;
2141
2142
2143
2144
2145 if (!rt && !nullfb &&
2146 XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno)
2147 gotbno = NULLFSBLOCK;
2148 }
2149
2150
2151
2152 else
2153 gotbno = NULLFSBLOCK;
2154
2155
2156
2157
2158 if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK)
2159 ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno;
2160 else if (prevbno != NULLFSBLOCK)
2161 ap->blkno = prevbno;
2162 else if (gotbno != NULLFSBLOCK)
2163 ap->blkno = gotbno;
2164 }
2165#undef ISVALID
2166}
2167
2168STATIC int
2169xfs_bmap_rtalloc(
2170 xfs_bmalloca_t *ap)
2171{
2172 xfs_alloctype_t atype = 0;
2173 int error;
2174 xfs_mount_t *mp;
2175 xfs_extlen_t prod = 0;
2176 xfs_extlen_t ralen = 0;
2177 xfs_extlen_t align;
2178 xfs_rtblock_t rtb;
2179
2180 mp = ap->ip->i_mount;
2181 align = xfs_get_extsz_hint(ap->ip);
2182 prod = align / mp->m_sb.sb_rextsize;
2183 error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev,
2184 align, 1, ap->eof, 0,
2185 ap->conv, &ap->offset, &ap->length);
2186 if (error)
2187 return error;
2188 ASSERT(ap->length);
2189 ASSERT(ap->length % mp->m_sb.sb_rextsize == 0);
2190
2191
2192
2193
2194
2195 if (do_mod(ap->offset, align) || ap->length % align)
2196 prod = 1;
2197
2198
2199
2200 ralen = ap->length / mp->m_sb.sb_rextsize;
2201
2202
2203
2204
2205
2206
2207
2208 if (ralen * mp->m_sb.sb_rextsize >= MAXEXTLEN)
2209 ralen = MAXEXTLEN / mp->m_sb.sb_rextsize;
2210
2211
2212
2213
2214 xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL);
2215 xfs_trans_ijoin(ap->tp, mp->m_rbmip, XFS_ILOCK_EXCL);
2216
2217
2218
2219
2220
2221 if (ap->eof && ap->offset == 0) {
2222 xfs_rtblock_t uninitialized_var(rtx);
2223
2224 error = xfs_rtpick_extent(mp, ap->tp, ralen, &rtx);
2225 if (error)
2226 return error;
2227 ap->blkno = rtx * mp->m_sb.sb_rextsize;
2228 } else {
2229 ap->blkno = 0;
2230 }
2231
2232 xfs_bmap_adjacent(ap);
2233
2234
2235
2236
2237 atype = ap->blkno == 0 ? XFS_ALLOCTYPE_ANY_AG : XFS_ALLOCTYPE_NEAR_BNO;
2238 do_div(ap->blkno, mp->m_sb.sb_rextsize);
2239 rtb = ap->blkno;
2240 ap->length = ralen;
2241 if ((error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1, ap->length,
2242 &ralen, atype, ap->wasdel, prod, &rtb)))
2243 return error;
2244 if (rtb == NULLFSBLOCK && prod > 1 &&
2245 (error = xfs_rtallocate_extent(ap->tp, ap->blkno, 1,
2246 ap->length, &ralen, atype,
2247 ap->wasdel, 1, &rtb)))
2248 return error;
2249 ap->blkno = rtb;
2250 if (ap->blkno != NULLFSBLOCK) {
2251 ap->blkno *= mp->m_sb.sb_rextsize;
2252 ralen *= mp->m_sb.sb_rextsize;
2253 ap->length = ralen;
2254 ap->ip->i_d.di_nblocks += ralen;
2255 xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
2256 if (ap->wasdel)
2257 ap->ip->i_delayed_blks -= ralen;
2258
2259
2260
2261
2262 xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
2263 ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT :
2264 XFS_TRANS_DQ_RTBCOUNT, (long) ralen);
2265 } else {
2266 ap->length = 0;
2267 }
2268 return 0;
2269}
2270
2271STATIC int
2272xfs_bmap_btalloc_nullfb(
2273 struct xfs_bmalloca *ap,
2274 struct xfs_alloc_arg *args,
2275 xfs_extlen_t *blen)
2276{
2277 struct xfs_mount *mp = ap->ip->i_mount;
2278 struct xfs_perag *pag;
2279 xfs_agnumber_t ag, startag;
2280 int notinit = 0;
2281 int error;
2282
2283 if (ap->userdata && xfs_inode_is_filestream(ap->ip))
2284 args->type = XFS_ALLOCTYPE_NEAR_BNO;
2285 else
2286 args->type = XFS_ALLOCTYPE_START_BNO;
2287 args->total = ap->total;
2288
2289
2290
2291
2292
2293
2294 startag = ag = XFS_FSB_TO_AGNO(mp, args->fsbno);
2295 if (startag == NULLAGNUMBER)
2296 startag = ag = 0;
2297
2298 pag = xfs_perag_get(mp, ag);
2299 while (*blen < args->maxlen) {
2300 if (!pag->pagf_init) {
2301 error = xfs_alloc_pagf_init(mp, args->tp, ag,
2302 XFS_ALLOC_FLAG_TRYLOCK);
2303 if (error) {
2304 xfs_perag_put(pag);
2305 return error;
2306 }
2307 }
2308
2309
2310
2311
2312 if (pag->pagf_init) {
2313 xfs_extlen_t longest;
2314 longest = xfs_alloc_longest_free_extent(mp, pag);
2315 if (*blen < longest)
2316 *blen = longest;
2317 } else
2318 notinit = 1;
2319
2320 if (xfs_inode_is_filestream(ap->ip)) {
2321 if (*blen >= args->maxlen)
2322 break;
2323
2324 if (ap->userdata) {
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334 if (startag == NULLAGNUMBER)
2335 break;
2336
2337 error = xfs_filestream_new_ag(ap, &ag);
2338 xfs_perag_put(pag);
2339 if (error)
2340 return error;
2341
2342
2343 startag = NULLAGNUMBER;
2344 pag = xfs_perag_get(mp, ag);
2345 continue;
2346 }
2347 }
2348 if (++ag == mp->m_sb.sb_agcount)
2349 ag = 0;
2350 if (ag == startag)
2351 break;
2352 xfs_perag_put(pag);
2353 pag = xfs_perag_get(mp, ag);
2354 }
2355 xfs_perag_put(pag);
2356
2357
2358
2359
2360
2361 if (notinit || *blen < ap->minlen)
2362 args->minlen = ap->minlen;
2363
2364
2365
2366
2367 else if (*blen < args->maxlen)
2368 args->minlen = *blen;
2369
2370
2371
2372
2373 else
2374 args->minlen = args->maxlen;
2375
2376
2377
2378
2379
2380 if (xfs_inode_is_filestream(ap->ip))
2381 ap->blkno = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0);
2382
2383 return 0;
2384}
2385
2386STATIC int
2387xfs_bmap_btalloc(
2388 xfs_bmalloca_t *ap)
2389{
2390 xfs_mount_t *mp;
2391 xfs_alloctype_t atype = 0;
2392 xfs_extlen_t align;
2393 xfs_agnumber_t fb_agno;
2394 xfs_agnumber_t ag;
2395 xfs_alloc_arg_t args;
2396 xfs_extlen_t blen;
2397 xfs_extlen_t nextminlen = 0;
2398 int nullfb;
2399 int isaligned;
2400 int tryagain;
2401 int error;
2402
2403 ASSERT(ap->length);
2404
2405 mp = ap->ip->i_mount;
2406 align = ap->userdata ? xfs_get_extsz_hint(ap->ip) : 0;
2407 if (unlikely(align)) {
2408 error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev,
2409 align, 0, ap->eof, 0, ap->conv,
2410 &ap->offset, &ap->length);
2411 ASSERT(!error);
2412 ASSERT(ap->length);
2413 }
2414 nullfb = *ap->firstblock == NULLFSBLOCK;
2415 fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock);
2416 if (nullfb) {
2417 if (ap->userdata && xfs_inode_is_filestream(ap->ip)) {
2418 ag = xfs_filestream_lookup_ag(ap->ip);
2419 ag = (ag != NULLAGNUMBER) ? ag : 0;
2420 ap->blkno = XFS_AGB_TO_FSB(mp, ag, 0);
2421 } else {
2422 ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino);
2423 }
2424 } else
2425 ap->blkno = *ap->firstblock;
2426
2427 xfs_bmap_adjacent(ap);
2428
2429
2430
2431
2432
2433 if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno)
2434 ;
2435 else
2436 ap->blkno = *ap->firstblock;
2437
2438
2439
2440 tryagain = isaligned = 0;
2441 args.tp = ap->tp;
2442 args.mp = mp;
2443 args.fsbno = ap->blkno;
2444
2445
2446 args.maxlen = MIN(ap->length, XFS_ALLOC_AG_MAX_USABLE(mp));
2447 args.firstblock = *ap->firstblock;
2448 blen = 0;
2449 if (nullfb) {
2450 error = xfs_bmap_btalloc_nullfb(ap, &args, &blen);
2451 if (error)
2452 return error;
2453 } else if (ap->flist->xbf_low) {
2454 if (xfs_inode_is_filestream(ap->ip))
2455 args.type = XFS_ALLOCTYPE_FIRST_AG;
2456 else
2457 args.type = XFS_ALLOCTYPE_START_BNO;
2458 args.total = args.minlen = ap->minlen;
2459 } else {
2460 args.type = XFS_ALLOCTYPE_NEAR_BNO;
2461 args.total = ap->total;
2462 args.minlen = ap->minlen;
2463 }
2464
2465 if (unlikely(align)) {
2466 args.prod = align;
2467 if ((args.mod = (xfs_extlen_t)do_mod(ap->offset, args.prod)))
2468 args.mod = (xfs_extlen_t)(args.prod - args.mod);
2469 } else if (mp->m_sb.sb_blocksize >= PAGE_CACHE_SIZE) {
2470 args.prod = 1;
2471 args.mod = 0;
2472 } else {
2473 args.prod = PAGE_CACHE_SIZE >> mp->m_sb.sb_blocklog;
2474 if ((args.mod = (xfs_extlen_t)(do_mod(ap->offset, args.prod))))
2475 args.mod = (xfs_extlen_t)(args.prod - args.mod);
2476 }
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486 if (!ap->flist->xbf_low && ap->aeof) {
2487 if (!ap->offset) {
2488 args.alignment = mp->m_dalign;
2489 atype = args.type;
2490 isaligned = 1;
2491
2492
2493
2494 if (blen > args.alignment && blen <= args.maxlen)
2495 args.minlen = blen - args.alignment;
2496 args.minalignslop = 0;
2497 } else {
2498
2499
2500
2501
2502
2503 atype = args.type;
2504 tryagain = 1;
2505 args.type = XFS_ALLOCTYPE_THIS_BNO;
2506 args.alignment = 1;
2507
2508
2509
2510
2511
2512
2513 if (blen > mp->m_dalign && blen <= args.maxlen)
2514 nextminlen = blen - mp->m_dalign;
2515 else
2516 nextminlen = args.minlen;
2517 if (nextminlen + mp->m_dalign > args.minlen + 1)
2518 args.minalignslop =
2519 nextminlen + mp->m_dalign -
2520 args.minlen - 1;
2521 else
2522 args.minalignslop = 0;
2523 }
2524 } else {
2525 args.alignment = 1;
2526 args.minalignslop = 0;
2527 }
2528 args.minleft = ap->minleft;
2529 args.wasdel = ap->wasdel;
2530 args.isfl = 0;
2531 args.userdata = ap->userdata;
2532 if ((error = xfs_alloc_vextent(&args)))
2533 return error;
2534 if (tryagain && args.fsbno == NULLFSBLOCK) {
2535
2536
2537
2538
2539 args.type = atype;
2540 args.fsbno = ap->blkno;
2541 args.alignment = mp->m_dalign;
2542 args.minlen = nextminlen;
2543 args.minalignslop = 0;
2544 isaligned = 1;
2545 if ((error = xfs_alloc_vextent(&args)))
2546 return error;
2547 }
2548 if (isaligned && args.fsbno == NULLFSBLOCK) {
2549
2550
2551
2552
2553 args.type = atype;
2554 args.fsbno = ap->blkno;
2555 args.alignment = 0;
2556 if ((error = xfs_alloc_vextent(&args)))
2557 return error;
2558 }
2559 if (args.fsbno == NULLFSBLOCK && nullfb &&
2560 args.minlen > ap->minlen) {
2561 args.minlen = ap->minlen;
2562 args.type = XFS_ALLOCTYPE_START_BNO;
2563 args.fsbno = ap->blkno;
2564 if ((error = xfs_alloc_vextent(&args)))
2565 return error;
2566 }
2567 if (args.fsbno == NULLFSBLOCK && nullfb) {
2568 args.fsbno = 0;
2569 args.type = XFS_ALLOCTYPE_FIRST_AG;
2570 args.total = ap->minlen;
2571 args.minleft = 0;
2572 if ((error = xfs_alloc_vextent(&args)))
2573 return error;
2574 ap->flist->xbf_low = 1;
2575 }
2576 if (args.fsbno != NULLFSBLOCK) {
2577
2578
2579
2580
2581 ASSERT(*ap->firstblock == NULLFSBLOCK ||
2582 XFS_FSB_TO_AGNO(mp, *ap->firstblock) ==
2583 XFS_FSB_TO_AGNO(mp, args.fsbno) ||
2584 (ap->flist->xbf_low &&
2585 XFS_FSB_TO_AGNO(mp, *ap->firstblock) <
2586 XFS_FSB_TO_AGNO(mp, args.fsbno)));
2587
2588 ap->blkno = args.fsbno;
2589 if (*ap->firstblock == NULLFSBLOCK)
2590 *ap->firstblock = args.fsbno;
2591 ASSERT(nullfb || fb_agno == args.agno ||
2592 (ap->flist->xbf_low && fb_agno < args.agno));
2593 ap->length = args.len;
2594 ap->ip->i_d.di_nblocks += args.len;
2595 xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE);
2596 if (ap->wasdel)
2597 ap->ip->i_delayed_blks -= args.len;
2598
2599
2600
2601
2602 xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
2603 ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT :
2604 XFS_TRANS_DQ_BCOUNT,
2605 (long) args.len);
2606 } else {
2607 ap->blkno = NULLFSBLOCK;
2608 ap->length = 0;
2609 }
2610 return 0;
2611}
2612
2613
2614
2615
2616
2617STATIC int
2618xfs_bmap_alloc(
2619 xfs_bmalloca_t *ap)
2620{
2621 if (XFS_IS_REALTIME_INODE(ap->ip) && ap->userdata)
2622 return xfs_bmap_rtalloc(ap);
2623 return xfs_bmap_btalloc(ap);
2624}
2625
2626
2627
2628
2629
2630
2631
2632STATIC int
2633xfs_bmap_btree_to_extents(
2634 xfs_trans_t *tp,
2635 xfs_inode_t *ip,
2636 xfs_btree_cur_t *cur,
2637 int *logflagsp,
2638 int whichfork)
2639{
2640
2641 struct xfs_btree_block *cblock;
2642 xfs_fsblock_t cbno;
2643 xfs_buf_t *cbp;
2644 int error;
2645 xfs_ifork_t *ifp;
2646 xfs_mount_t *mp;
2647 __be64 *pp;
2648 struct xfs_btree_block *rblock;
2649
2650 mp = ip->i_mount;
2651 ifp = XFS_IFORK_PTR(ip, whichfork);
2652 ASSERT(ifp->if_flags & XFS_IFEXTENTS);
2653 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
2654 rblock = ifp->if_broot;
2655 ASSERT(be16_to_cpu(rblock->bb_level) == 1);
2656 ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1);
2657 ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1);
2658 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes);
2659 cbno = be64_to_cpu(*pp);
2660 *logflagsp = 0;
2661#ifdef DEBUG
2662 if ((error = xfs_btree_check_lptr(cur, cbno, 1)))
2663 return error;
2664#endif
2665 if ((error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp,
2666 XFS_BMAP_BTREE_REF)))
2667 return error;
2668 cblock = XFS_BUF_TO_BLOCK(cbp);
2669 if ((error = xfs_btree_check_block(cur, cblock, 0, cbp)))
2670 return error;
2671 xfs_bmap_add_free(cbno, 1, cur->bc_private.b.flist, mp);
2672 ip->i_d.di_nblocks--;
2673 xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L);
2674 xfs_trans_binval(tp, cbp);
2675 if (cur->bc_bufs[0] == cbp)
2676 cur->bc_bufs[0] = NULL;
2677 xfs_iroot_realloc(ip, -1, whichfork);
2678 ASSERT(ifp->if_broot == NULL);
2679 ASSERT((ifp->if_flags & XFS_IFBROOT) == 0);
2680 XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
2681 *logflagsp = XFS_ILOG_CORE | xfs_ilog_fext(whichfork);
2682 return 0;
2683}
2684
2685
2686
2687
2688
2689STATIC int
2690xfs_bmap_del_extent(
2691 xfs_inode_t *ip,
2692 xfs_trans_t *tp,
2693 xfs_extnum_t *idx,
2694 xfs_bmap_free_t *flist,
2695 xfs_btree_cur_t *cur,
2696 xfs_bmbt_irec_t *del,
2697 int *logflagsp,
2698 int whichfork)
2699{
2700 xfs_filblks_t da_new;
2701 xfs_filblks_t da_old;
2702 xfs_fsblock_t del_endblock=0;
2703 xfs_fileoff_t del_endoff;
2704 int delay;
2705 int do_fx;
2706 xfs_bmbt_rec_host_t *ep;
2707 int error;
2708 int flags;
2709 xfs_bmbt_irec_t got;
2710 xfs_fileoff_t got_endoff;
2711 int i;
2712 xfs_ifork_t *ifp;
2713 xfs_mount_t *mp;
2714 xfs_filblks_t nblks;
2715 xfs_bmbt_irec_t new;
2716
2717 uint qfield;
2718 xfs_filblks_t temp;
2719 xfs_filblks_t temp2;
2720 int state = 0;
2721
2722 XFS_STATS_INC(xs_del_exlist);
2723
2724 if (whichfork == XFS_ATTR_FORK)
2725 state |= BMAP_ATTRFORK;
2726
2727 mp = ip->i_mount;
2728 ifp = XFS_IFORK_PTR(ip, whichfork);
2729 ASSERT((*idx >= 0) && (*idx < ifp->if_bytes /
2730 (uint)sizeof(xfs_bmbt_rec_t)));
2731 ASSERT(del->br_blockcount > 0);
2732 ep = xfs_iext_get_ext(ifp, *idx);
2733 xfs_bmbt_get_all(ep, &got);
2734 ASSERT(got.br_startoff <= del->br_startoff);
2735 del_endoff = del->br_startoff + del->br_blockcount;
2736 got_endoff = got.br_startoff + got.br_blockcount;
2737 ASSERT(got_endoff >= del_endoff);
2738 delay = isnullstartblock(got.br_startblock);
2739 ASSERT(isnullstartblock(del->br_startblock) == delay);
2740 flags = 0;
2741 qfield = 0;
2742 error = 0;
2743
2744
2745
2746 if (!delay) {
2747 flags = XFS_ILOG_CORE;
2748
2749
2750
2751 if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) {
2752 xfs_fsblock_t bno;
2753 xfs_filblks_t len;
2754
2755 ASSERT(do_mod(del->br_blockcount,
2756 mp->m_sb.sb_rextsize) == 0);
2757 ASSERT(do_mod(del->br_startblock,
2758 mp->m_sb.sb_rextsize) == 0);
2759 bno = del->br_startblock;
2760 len = del->br_blockcount;
2761 do_div(bno, mp->m_sb.sb_rextsize);
2762 do_div(len, mp->m_sb.sb_rextsize);
2763 error = xfs_rtfree_extent(tp, bno, (xfs_extlen_t)len);
2764 if (error)
2765 goto done;
2766 do_fx = 0;
2767 nblks = len * mp->m_sb.sb_rextsize;
2768 qfield = XFS_TRANS_DQ_RTBCOUNT;
2769 }
2770
2771
2772
2773 else {
2774 do_fx = 1;
2775 nblks = del->br_blockcount;
2776 qfield = XFS_TRANS_DQ_BCOUNT;
2777 }
2778
2779
2780
2781 del_endblock = del->br_startblock + del->br_blockcount;
2782 if (cur) {
2783 if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff,
2784 got.br_startblock, got.br_blockcount,
2785 &i)))
2786 goto done;
2787 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2788 }
2789 da_old = da_new = 0;
2790 } else {
2791 da_old = startblockval(got.br_startblock);
2792 da_new = 0;
2793 nblks = 0;
2794 do_fx = 0;
2795 }
2796
2797
2798
2799
2800 switch (((got.br_startoff == del->br_startoff) << 1) |
2801 (got_endoff == del_endoff)) {
2802 case 3:
2803
2804
2805
2806 xfs_iext_remove(ip, *idx, 1,
2807 whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0);
2808 --*idx;
2809 if (delay)
2810 break;
2811
2812 XFS_IFORK_NEXT_SET(ip, whichfork,
2813 XFS_IFORK_NEXTENTS(ip, whichfork) - 1);
2814 flags |= XFS_ILOG_CORE;
2815 if (!cur) {
2816 flags |= xfs_ilog_fext(whichfork);
2817 break;
2818 }
2819 if ((error = xfs_btree_delete(cur, &i)))
2820 goto done;
2821 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2822 break;
2823
2824 case 2:
2825
2826
2827
2828 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
2829 xfs_bmbt_set_startoff(ep, del_endoff);
2830 temp = got.br_blockcount - del->br_blockcount;
2831 xfs_bmbt_set_blockcount(ep, temp);
2832 if (delay) {
2833 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
2834 da_old);
2835 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
2836 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
2837 da_new = temp;
2838 break;
2839 }
2840 xfs_bmbt_set_startblock(ep, del_endblock);
2841 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
2842 if (!cur) {
2843 flags |= xfs_ilog_fext(whichfork);
2844 break;
2845 }
2846 if ((error = xfs_bmbt_update(cur, del_endoff, del_endblock,
2847 got.br_blockcount - del->br_blockcount,
2848 got.br_state)))
2849 goto done;
2850 break;
2851
2852 case 1:
2853
2854
2855
2856 temp = got.br_blockcount - del->br_blockcount;
2857 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
2858 xfs_bmbt_set_blockcount(ep, temp);
2859 if (delay) {
2860 temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
2861 da_old);
2862 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
2863 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
2864 da_new = temp;
2865 break;
2866 }
2867 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
2868 if (!cur) {
2869 flags |= xfs_ilog_fext(whichfork);
2870 break;
2871 }
2872 if ((error = xfs_bmbt_update(cur, got.br_startoff,
2873 got.br_startblock,
2874 got.br_blockcount - del->br_blockcount,
2875 got.br_state)))
2876 goto done;
2877 break;
2878
2879 case 0:
2880
2881
2882
2883 temp = del->br_startoff - got.br_startoff;
2884 trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
2885 xfs_bmbt_set_blockcount(ep, temp);
2886 new.br_startoff = del_endoff;
2887 temp2 = got_endoff - del_endoff;
2888 new.br_blockcount = temp2;
2889 new.br_state = got.br_state;
2890 if (!delay) {
2891 new.br_startblock = del_endblock;
2892 flags |= XFS_ILOG_CORE;
2893 if (cur) {
2894 if ((error = xfs_bmbt_update(cur,
2895 got.br_startoff,
2896 got.br_startblock, temp,
2897 got.br_state)))
2898 goto done;
2899 if ((error = xfs_btree_increment(cur, 0, &i)))
2900 goto done;
2901 cur->bc_rec.b = new;
2902 error = xfs_btree_insert(cur, &i);
2903 if (error && error != ENOSPC)
2904 goto done;
2905
2906
2907
2908
2909
2910
2911 if (error == ENOSPC) {
2912
2913
2914
2915
2916 if ((error = xfs_bmbt_lookup_eq(cur,
2917 got.br_startoff,
2918 got.br_startblock,
2919 temp, &i)))
2920 goto done;
2921 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2922
2923
2924
2925
2926 if ((error = xfs_bmbt_update(cur,
2927 got.br_startoff,
2928 got.br_startblock,
2929 got.br_blockcount,
2930 got.br_state)))
2931 goto done;
2932
2933
2934
2935
2936 xfs_bmbt_set_blockcount(ep,
2937 got.br_blockcount);
2938 flags = 0;
2939 error = XFS_ERROR(ENOSPC);
2940 goto done;
2941 }
2942 XFS_WANT_CORRUPTED_GOTO(i == 1, done);
2943 } else
2944 flags |= xfs_ilog_fext(whichfork);
2945 XFS_IFORK_NEXT_SET(ip, whichfork,
2946 XFS_IFORK_NEXTENTS(ip, whichfork) + 1);
2947 } else {
2948 ASSERT(whichfork == XFS_DATA_FORK);
2949 temp = xfs_bmap_worst_indlen(ip, temp);
2950 xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
2951 temp2 = xfs_bmap_worst_indlen(ip, temp2);
2952 new.br_startblock = nullstartblock((int)temp2);
2953 da_new = temp + temp2;
2954 while (da_new > da_old) {
2955 if (temp) {
2956 temp--;
2957 da_new--;
2958 xfs_bmbt_set_startblock(ep,
2959 nullstartblock((int)temp));
2960 }
2961 if (da_new == da_old)
2962 break;
2963 if (temp2) {
2964 temp2--;
2965 da_new--;
2966 new.br_startblock =
2967 nullstartblock((int)temp2);
2968 }
2969 }
2970 }
2971 trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
2972 xfs_iext_insert(ip, *idx + 1, 1, &new, state);
2973 ++*idx;
2974 break;
2975 }
2976
2977
2978
2979 if (do_fx)
2980 xfs_bmap_add_free(del->br_startblock, del->br_blockcount, flist,
2981 mp);
2982
2983
2984
2985 if (nblks)
2986 ip->i_d.di_nblocks -= nblks;
2987
2988
2989
2990 if (qfield)
2991 xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks);
2992
2993
2994
2995
2996
2997 ASSERT(da_old >= da_new);
2998 if (da_old > da_new) {
2999 xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS,
3000 (int64_t)(da_old - da_new), 0);
3001 }
3002done:
3003 *logflagsp = flags;
3004 return error;
3005}
3006
3007
3008
3009
3010
3011STATIC void
3012xfs_bmap_del_free(
3013 xfs_bmap_free_t *flist,
3014 xfs_bmap_free_item_t *prev,
3015 xfs_bmap_free_item_t *free)
3016{
3017 if (prev)
3018 prev->xbfi_next = free->xbfi_next;
3019 else
3020 flist->xbf_first = free->xbfi_next;
3021 flist->xbf_count--;
3022 kmem_zone_free(xfs_bmap_free_item_zone, free);
3023}
3024
3025
3026
3027
3028
3029STATIC int
3030xfs_bmap_extents_to_btree(
3031 xfs_trans_t *tp,
3032 xfs_inode_t *ip,
3033 xfs_fsblock_t *firstblock,
3034 xfs_bmap_free_t *flist,
3035 xfs_btree_cur_t **curp,
3036 int wasdel,
3037 int *logflagsp,
3038 int whichfork)
3039{
3040 struct xfs_btree_block *ablock;
3041 xfs_buf_t *abp;
3042 xfs_alloc_arg_t args;
3043 xfs_bmbt_rec_t *arp;
3044 struct xfs_btree_block *block;
3045 xfs_btree_cur_t *cur;
3046 xfs_bmbt_rec_host_t *ep;
3047 int error;
3048 xfs_extnum_t i, cnt;
3049 xfs_ifork_t *ifp;
3050 xfs_bmbt_key_t *kp;
3051 xfs_mount_t *mp;
3052 xfs_extnum_t nextents;
3053 xfs_bmbt_ptr_t *pp;
3054
3055 ifp = XFS_IFORK_PTR(ip, whichfork);
3056 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS);
3057
3058
3059
3060
3061 xfs_iroot_realloc(ip, 1, whichfork);
3062 ifp->if_flags |= XFS_IFBROOT;
3063
3064
3065
3066
3067 block = ifp->if_broot;
3068 block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
3069 block->bb_level = cpu_to_be16(1);
3070 block->bb_numrecs = cpu_to_be16(1);
3071 block->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
3072 block->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
3073
3074
3075
3076
3077 mp = ip->i_mount;
3078 cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
3079 cur->bc_private.b.firstblock = *firstblock;
3080 cur->bc_private.b.flist = flist;
3081 cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;
3082
3083
3084
3085 XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE);
3086 args.tp = tp;
3087 args.mp = mp;
3088 args.firstblock = *firstblock;
3089 if (*firstblock == NULLFSBLOCK) {
3090 args.type = XFS_ALLOCTYPE_START_BNO;
3091 args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino);
3092 } else if (flist->xbf_low) {
3093 args.type = XFS_ALLOCTYPE_START_BNO;
3094 args.fsbno = *firstblock;
3095 } else {
3096 args.type = XFS_ALLOCTYPE_NEAR_BNO;
3097 args.fsbno = *firstblock;
3098 }
3099 args.minlen = args.maxlen = args.prod = 1;
3100 args.total = args.minleft = args.alignment = args.mod = args.isfl =
3101 args.minalignslop = 0;
3102 args.wasdel = wasdel;
3103 *logflagsp = 0;
3104 if ((error = xfs_alloc_vextent(&args))) {
3105 xfs_iroot_realloc(ip, -1, whichfork);
3106 xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
3107 return error;
3108 }
3109
3110
3111
3112 ASSERT(args.fsbno != NULLFSBLOCK);
3113 ASSERT(*firstblock == NULLFSBLOCK ||
3114 args.agno == XFS_FSB_TO_AGNO(mp, *firstblock) ||
3115 (flist->xbf_low &&
3116 args.agno > XFS_FSB_TO_AGNO(mp, *firstblock)));
3117 *firstblock = cur->bc_private.b.firstblock = args.fsbno;
3118 cur->bc_private.b.allocated++;
3119 ip->i_d.di_nblocks++;
3120 xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L);
3121 abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0);
3122
3123
3124
3125 ablock = XFS_BUF_TO_BLOCK(abp);
3126 ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
3127 ablock->bb_level = 0;
3128 ablock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
3129 ablock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
3130 arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
3131 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
3132 for (cnt = i = 0; i < nextents; i++) {
3133 ep = xfs_iext_get_ext(ifp, i);
3134 if (!isnullstartblock(xfs_bmbt_get_startblock(ep))) {
3135 arp->l0 = cpu_to_be64(ep->l0);
3136 arp->l1 = cpu_to_be64(ep->l1);
3137 arp++; cnt++;
3138 }
3139 }
3140 ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork));
3141 xfs_btree_set_numrecs(ablock, cnt);
3142
3143
3144
3145
3146 kp = XFS_BMBT_KEY_ADDR(mp, block, 1);
3147 arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
3148 kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp));
3149 pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur,
3150 be16_to_cpu(block->bb_level)));
3151 *pp = cpu_to_be64(args.fsbno);
3152
3153
3154
3155
3156
3157 xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
3158 xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
3159 ASSERT(*curp == NULL);
3160 *curp = cur;
3161 *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork);
3162 return 0;
3163}
3164
3165
3166
3167
3168uint
3169xfs_default_attroffset(
3170 struct xfs_inode *ip)
3171{
3172 struct xfs_mount *mp = ip->i_mount;
3173 uint offset;
3174
3175 if (mp->m_sb.sb_inodesize == 256) {
3176 offset = XFS_LITINO(mp) -
3177 XFS_BMDR_SPACE_CALC(MINABTPTRS);
3178 } else {
3179 offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS);
3180 }
3181
3182 ASSERT(offset < XFS_LITINO(mp));
3183 return offset;
3184}
3185
3186
3187
3188
3189
3190
3191STATIC void
3192xfs_bmap_forkoff_reset(
3193 xfs_mount_t *mp,
3194 xfs_inode_t *ip,
3195 int whichfork)
3196{
3197 if (whichfork == XFS_ATTR_FORK &&
3198 ip->i_d.di_format != XFS_DINODE_FMT_DEV &&
3199 ip->i_d.di_format != XFS_DINODE_FMT_UUID &&
3200 ip->i_d.di_format != XFS_DINODE_FMT_BTREE) {
3201 uint dfl_forkoff = xfs_default_attroffset(ip) >> 3;
3202
3203 if (dfl_forkoff > ip->i_d.di_forkoff)
3204 ip->i_d.di_forkoff = dfl_forkoff;
3205 }
3206}
3207
3208
3209
3210
3211
3212
3213
3214STATIC int
3215xfs_bmap_local_to_extents(
3216 xfs_trans_t *tp,
3217 xfs_inode_t *ip,
3218 xfs_fsblock_t *firstblock,
3219 xfs_extlen_t total,
3220 int *logflagsp,
3221 int whichfork)
3222{
3223 int error;
3224 int flags;
3225 xfs_ifork_t *ifp;
3226
3227
3228
3229
3230
3231 ASSERT(!(S_ISREG(ip->i_d.di_mode) && whichfork == XFS_DATA_FORK));
3232 ifp = XFS_IFORK_PTR(ip, whichfork);
3233 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL);
3234 flags = 0;
3235 error = 0;
3236 if (ifp->if_bytes) {
3237 xfs_alloc_arg_t args;
3238 xfs_buf_t *bp;
3239 xfs_bmbt_rec_host_t *ep;
3240
3241 args.tp = tp;
3242 args.mp = ip->i_mount;
3243 args.firstblock = *firstblock;
3244 ASSERT((ifp->if_flags &
3245 (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == XFS_IFINLINE);
3246
3247
3248
3249
3250 if (*firstblock == NULLFSBLOCK) {
3251 args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino);
3252 args.type = XFS_ALLOCTYPE_START_BNO;
3253 } else {
3254 args.fsbno = *firstblock;
3255 args.type = XFS_ALLOCTYPE_NEAR_BNO;
3256 }
3257 args.total = total;
3258 args.mod = args.minleft = args.alignment = args.wasdel =
3259 args.isfl = args.minalignslop = 0;
3260 args.minlen = args.maxlen = args.prod = 1;
3261 if ((error = xfs_alloc_vextent(&args)))
3262 goto done;
3263
3264
3265
3266 ASSERT(args.fsbno != NULLFSBLOCK);
3267 ASSERT(args.len == 1);
3268 *firstblock = args.fsbno;
3269 bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
3270 memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes);
3271 xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
3272 xfs_bmap_forkoff_reset(args.mp, ip, whichfork);
3273 xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
3274 xfs_iext_add(ifp, 0, 1);
3275 ep = xfs_iext_get_ext(ifp, 0);
3276 xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM);
3277 trace_xfs_bmap_post_update(ip, 0,
3278 whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0,
3279 _THIS_IP_);
3280 XFS_IFORK_NEXT_SET(ip, whichfork, 1);
3281 ip->i_d.di_nblocks = 1;
3282 xfs_trans_mod_dquot_byino(tp, ip,
3283 XFS_TRANS_DQ_BCOUNT, 1L);
3284 flags |= xfs_ilog_fext(whichfork);
3285 } else {
3286 ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0);
3287 xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork);
3288 }
3289 ifp->if_flags &= ~XFS_IFINLINE;
3290 ifp->if_flags |= XFS_IFEXTENTS;
3291 XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
3292 flags |= XFS_ILOG_CORE;
3293done:
3294 *logflagsp = flags;
3295 return error;
3296}
3297
3298
3299
3300
3301
3302
3303
3304
3305STATIC xfs_bmbt_rec_host_t *
3306xfs_bmap_search_multi_extents(
3307 xfs_ifork_t *ifp,
3308 xfs_fileoff_t bno,
3309 int *eofp,
3310 xfs_extnum_t *lastxp,
3311 xfs_bmbt_irec_t *gotp,
3312 xfs_bmbt_irec_t *prevp)
3313{
3314 xfs_bmbt_rec_host_t *ep;
3315 xfs_extnum_t lastx;
3316
3317
3318
3319
3320
3321 gotp->br_startoff = 0xffa5a5a5a5a5a5a5LL;
3322 gotp->br_blockcount = 0xa55a5a5a5a5a5a5aLL;
3323 gotp->br_state = XFS_EXT_INVALID;
3324#if XFS_BIG_BLKNOS
3325 gotp->br_startblock = 0xffffa5a5a5a5a5a5LL;
3326#else
3327 gotp->br_startblock = 0xffffa5a5;
3328#endif
3329 prevp->br_startoff = NULLFILEOFF;
3330
3331 ep = xfs_iext_bno_to_ext(ifp, bno, &lastx);
3332 if (lastx > 0) {
3333 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, lastx - 1), prevp);
3334 }
3335 if (lastx < (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t))) {
3336 xfs_bmbt_get_all(ep, gotp);
3337 *eofp = 0;
3338 } else {
3339 if (lastx > 0) {
3340 *gotp = *prevp;
3341 }
3342 *eofp = 1;
3343 ep = NULL;
3344 }
3345 *lastxp = lastx;
3346 return ep;
3347}
3348
3349
3350
3351
3352
3353
3354
3355
3356STATIC xfs_bmbt_rec_host_t *
3357xfs_bmap_search_extents(
3358 xfs_inode_t *ip,
3359 xfs_fileoff_t bno,
3360 int fork,
3361 int *eofp,
3362 xfs_extnum_t *lastxp,
3363 xfs_bmbt_irec_t *gotp,
3364 xfs_bmbt_irec_t *prevp)
3365{
3366 xfs_ifork_t *ifp;
3367 xfs_bmbt_rec_host_t *ep;
3368
3369 XFS_STATS_INC(xs_look_exlist);
3370 ifp = XFS_IFORK_PTR(ip, fork);
3371
3372 ep = xfs_bmap_search_multi_extents(ifp, bno, eofp, lastxp, gotp, prevp);
3373
3374 if (unlikely(!(gotp->br_startblock) && (*lastxp != NULLEXTNUM) &&
3375 !(XFS_IS_REALTIME_INODE(ip) && fork == XFS_DATA_FORK))) {
3376 xfs_alert_tag(ip->i_mount, XFS_PTAG_FSBLOCK_ZERO,
3377 "Access to block zero in inode %llu "
3378 "start_block: %llx start_off: %llx "
3379 "blkcnt: %llx extent-state: %x lastx: %x\n",
3380 (unsigned long long)ip->i_ino,
3381 (unsigned long long)gotp->br_startblock,
3382 (unsigned long long)gotp->br_startoff,
3383 (unsigned long long)gotp->br_blockcount,
3384 gotp->br_state, *lastxp);
3385 *lastxp = NULLEXTNUM;
3386 *eofp = 1;
3387 return NULL;
3388 }
3389 return ep;
3390}
3391
3392
3393
3394
3395
3396STATIC xfs_filblks_t
3397xfs_bmap_worst_indlen(
3398 xfs_inode_t *ip,
3399 xfs_filblks_t len)
3400{
3401 int level;
3402 int maxrecs;
3403 xfs_mount_t *mp;
3404 xfs_filblks_t rval;
3405
3406 mp = ip->i_mount;
3407 maxrecs = mp->m_bmap_dmxr[0];
3408 for (level = 0, rval = 0;
3409 level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK);
3410 level++) {
3411 len += maxrecs - 1;
3412 do_div(len, maxrecs);
3413 rval += len;
3414 if (len == 1)
3415 return rval + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) -
3416 level - 1;
3417 if (level == 0)
3418 maxrecs = mp->m_bmap_dmxr[1];
3419 }
3420 return rval;
3421}
3422
3423
3424
3425
3426
3427int
3428xfs_bmap_add_attrfork(
3429 xfs_inode_t *ip,
3430 int size,
3431 int rsvd)
3432{
3433 xfs_fsblock_t firstblock;
3434 xfs_bmap_free_t flist;
3435 xfs_mount_t *mp;
3436 xfs_trans_t *tp;
3437 int blks;
3438 int version = 1;
3439 int committed;
3440 int logflags;
3441 int error;
3442
3443 ASSERT(XFS_IFORK_Q(ip) == 0);
3444
3445 mp = ip->i_mount;
3446 ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
3447 tp = xfs_trans_alloc(mp, XFS_TRANS_ADDAFORK);
3448 blks = XFS_ADDAFORK_SPACE_RES(mp);
3449 if (rsvd)
3450 tp->t_flags |= XFS_TRANS_RESERVE;
3451 if ((error = xfs_trans_reserve(tp, blks, XFS_ADDAFORK_LOG_RES(mp), 0,
3452 XFS_TRANS_PERM_LOG_RES, XFS_ADDAFORK_LOG_COUNT)))
3453 goto error0;
3454 xfs_ilock(ip, XFS_ILOCK_EXCL);
3455 error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ?
3456 XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES :
3457 XFS_QMOPT_RES_REGBLKS);
3458 if (error) {
3459 xfs_iunlock(ip, XFS_ILOCK_EXCL);
3460 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES);
3461 return error;
3462 }
3463 if (XFS_IFORK_Q(ip))
3464 goto error1;
3465 if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) {
3466
3467
3468
3469 ASSERT(ip->i_d.di_aformat == 0);
3470 ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
3471 }
3472 ASSERT(ip->i_d.di_anextents == 0);
3473
3474 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
3475 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
3476
3477 switch (ip->i_d.di_format) {
3478 case XFS_DINODE_FMT_DEV:
3479 ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
3480 break;
3481 case XFS_DINODE_FMT_UUID:
3482 ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3;
3483 break;
3484 case XFS_DINODE_FMT_LOCAL:
3485 case XFS_DINODE_FMT_EXTENTS:
3486 case XFS_DINODE_FMT_BTREE:
3487 ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
3488 if (!ip->i_d.di_forkoff)
3489 ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3;
3490 else if (mp->m_flags & XFS_MOUNT_ATTR2)
3491 version = 2;
3492 break;
3493 default:
3494 ASSERT(0);
3495 error = XFS_ERROR(EINVAL);
3496 goto error1;
3497 }
3498
3499 ASSERT(ip->i_afp == NULL);
3500 ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP);
3501 ip->i_afp->if_flags = XFS_IFEXTENTS;
3502 logflags = 0;
3503 xfs_bmap_init(&flist, &firstblock);
3504 switch (ip->i_d.di_format) {
3505 case XFS_DINODE_FMT_LOCAL:
3506 error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &flist,
3507 &logflags);
3508 break;
3509 case XFS_DINODE_FMT_EXTENTS:
3510 error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock,
3511 &flist, &logflags);
3512 break;
3513 case XFS_DINODE_FMT_BTREE:
3514 error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &flist,
3515 &logflags);
3516 break;
3517 default:
3518 error = 0;
3519 break;
3520 }
3521 if (logflags)
3522 xfs_trans_log_inode(tp, ip, logflags);
3523 if (error)
3524 goto error2;
3525 if (!xfs_sb_version_hasattr(&mp->m_sb) ||
3526 (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) {
3527 __int64_t sbfields = 0;
3528
3529 spin_lock(&mp->m_sb_lock);
3530 if (!xfs_sb_version_hasattr(&mp->m_sb)) {
3531 xfs_sb_version_addattr(&mp->m_sb);
3532 sbfields |= XFS_SB_VERSIONNUM;
3533 }
3534 if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) {
3535 xfs_sb_version_addattr2(&mp->m_sb);
3536 sbfields |= (XFS_SB_VERSIONNUM | XFS_SB_FEATURES2);
3537 }
3538 if (sbfields) {
3539 spin_unlock(&mp->m_sb_lock);
3540 xfs_mod_sb(tp, sbfields);
3541 } else
3542 spin_unlock(&mp->m_sb_lock);
3543 }
3544
3545 error = xfs_bmap_finish(&tp, &flist, &committed);
3546 if (error)
3547 goto error2;
3548 return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
3549error2:
3550 xfs_bmap_cancel(&flist);
3551error1:
3552 xfs_iunlock(ip, XFS_ILOCK_EXCL);
3553error0:
3554 xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
3555 return error;
3556}
3557
3558
3559
3560
3561
3562
3563void
3564xfs_bmap_add_free(
3565 xfs_fsblock_t bno,
3566 xfs_filblks_t len,
3567 xfs_bmap_free_t *flist,
3568 xfs_mount_t *mp)
3569{
3570 xfs_bmap_free_item_t *cur;
3571 xfs_bmap_free_item_t *new;
3572 xfs_bmap_free_item_t *prev;
3573#ifdef DEBUG
3574 xfs_agnumber_t agno;
3575 xfs_agblock_t agbno;
3576
3577 ASSERT(bno != NULLFSBLOCK);
3578 ASSERT(len > 0);
3579 ASSERT(len <= MAXEXTLEN);
3580 ASSERT(!isnullstartblock(bno));
3581 agno = XFS_FSB_TO_AGNO(mp, bno);
3582 agbno = XFS_FSB_TO_AGBNO(mp, bno);
3583 ASSERT(agno < mp->m_sb.sb_agcount);
3584 ASSERT(agbno < mp->m_sb.sb_agblocks);
3585 ASSERT(len < mp->m_sb.sb_agblocks);
3586 ASSERT(agbno + len <= mp->m_sb.sb_agblocks);
3587#endif
3588 ASSERT(xfs_bmap_free_item_zone != NULL);
3589 new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP);
3590 new->xbfi_startblock = bno;
3591 new->xbfi_blockcount = (xfs_extlen_t)len;
3592 for (prev = NULL, cur = flist->xbf_first;
3593 cur != NULL;
3594 prev = cur, cur = cur->xbfi_next) {
3595 if (cur->xbfi_startblock >= bno)
3596 break;
3597 }
3598 if (prev)
3599 prev->xbfi_next = new;
3600 else
3601 flist->xbf_first = new;
3602 new->xbfi_next = cur;
3603 flist->xbf_count++;
3604}
3605
3606
3607
3608
3609
3610void
3611xfs_bmap_compute_maxlevels(
3612 xfs_mount_t *mp,
3613 int whichfork)
3614{
3615 int level;
3616 uint maxblocks;
3617 uint maxleafents;
3618 int maxrootrecs;
3619 int minleafrecs;
3620 int minnoderecs;
3621 int sz;
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637 if (whichfork == XFS_DATA_FORK) {
3638 maxleafents = MAXEXTNUM;
3639 sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS);
3640 } else {
3641 maxleafents = MAXAEXTNUM;
3642 sz = XFS_BMDR_SPACE_CALC(MINABTPTRS);
3643 }
3644 maxrootrecs = xfs_bmdr_maxrecs(mp, sz, 0);
3645 minleafrecs = mp->m_bmap_dmnr[0];
3646 minnoderecs = mp->m_bmap_dmnr[1];
3647 maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs;
3648 for (level = 1; maxblocks > 1; level++) {
3649 if (maxblocks <= maxrootrecs)
3650 maxblocks = 1;
3651 else
3652 maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs;
3653 }
3654 mp->m_bm_maxlevels[whichfork] = level;
3655}
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666int
3667xfs_bmap_finish(
3668 xfs_trans_t **tp,
3669 xfs_bmap_free_t *flist,
3670 int *committed)
3671{
3672 xfs_efd_log_item_t *efd;
3673 xfs_efi_log_item_t *efi;
3674 int error;
3675 xfs_bmap_free_item_t *free;
3676 unsigned int logres;
3677 unsigned int logcount;
3678 xfs_mount_t *mp;
3679 xfs_bmap_free_item_t *next;
3680 xfs_trans_t *ntp;
3681
3682 ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
3683 if (flist->xbf_count == 0) {
3684 *committed = 0;
3685 return 0;
3686 }
3687 ntp = *tp;
3688 efi = xfs_trans_get_efi(ntp, flist->xbf_count);
3689 for (free = flist->xbf_first; free; free = free->xbfi_next)
3690 xfs_trans_log_efi_extent(ntp, efi, free->xbfi_startblock,
3691 free->xbfi_blockcount);
3692 logres = ntp->t_log_res;
3693 logcount = ntp->t_log_count;
3694 ntp = xfs_trans_dup(*tp);
3695 error = xfs_trans_commit(*tp, 0);
3696 *tp = ntp;
3697 *committed = 1;
3698
3699
3700
3701
3702 if (error)
3703 return error;
3704
3705
3706
3707
3708
3709 xfs_log_ticket_put(ntp->t_ticket);
3710
3711 if ((error = xfs_trans_reserve(ntp, 0, logres, 0, XFS_TRANS_PERM_LOG_RES,
3712 logcount)))
3713 return error;
3714 efd = xfs_trans_get_efd(ntp, efi, flist->xbf_count);
3715 for (free = flist->xbf_first; free != NULL; free = next) {
3716 next = free->xbfi_next;
3717 if ((error = xfs_free_extent(ntp, free->xbfi_startblock,
3718 free->xbfi_blockcount))) {
3719
3720
3721
3722
3723
3724
3725
3726
3727 mp = ntp->t_mountp;
3728 if (!XFS_FORCED_SHUTDOWN(mp))
3729 xfs_force_shutdown(mp,
3730 (error == EFSCORRUPTED) ?
3731 SHUTDOWN_CORRUPT_INCORE :
3732 SHUTDOWN_META_IO_ERROR);
3733 return error;
3734 }
3735 xfs_trans_log_efd_extent(ntp, efd, free->xbfi_startblock,
3736 free->xbfi_blockcount);
3737 xfs_bmap_del_free(flist, NULL, free);
3738 }
3739 return 0;
3740}
3741
3742
3743
3744
3745void
3746xfs_bmap_cancel(
3747 xfs_bmap_free_t *flist)
3748{
3749 xfs_bmap_free_item_t *free;
3750 xfs_bmap_free_item_t *next;
3751
3752 if (flist->xbf_count == 0)
3753 return;
3754 ASSERT(flist->xbf_first != NULL);
3755 for (free = flist->xbf_first; free; free = next) {
3756 next = free->xbfi_next;
3757 xfs_bmap_del_free(flist, NULL, free);
3758 }
3759 ASSERT(flist->xbf_count == 0);
3760}
3761
3762
3763
3764
3765
3766
3767
3768
3769int
3770xfs_bmap_first_unused(
3771 xfs_trans_t *tp,
3772 xfs_inode_t *ip,
3773 xfs_extlen_t len,
3774 xfs_fileoff_t *first_unused,
3775 int whichfork)
3776{
3777 int error;
3778 int idx;
3779 xfs_ifork_t *ifp;
3780 xfs_fileoff_t lastaddr;
3781 xfs_fileoff_t lowest;
3782 xfs_fileoff_t max;
3783 xfs_fileoff_t off;
3784 xfs_extnum_t nextents;
3785
3786 ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE ||
3787 XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS ||
3788 XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL);
3789 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
3790 *first_unused = 0;
3791 return 0;
3792 }
3793 ifp = XFS_IFORK_PTR(ip, whichfork);
3794 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
3795 (error = xfs_iread_extents(tp, ip, whichfork)))
3796 return error;
3797 lowest = *first_unused;
3798 nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
3799 for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) {
3800 xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx);
3801 off = xfs_bmbt_get_startoff(ep);
3802
3803
3804
3805 if (off >= lowest + len && off - max >= len) {
3806 *first_unused = max;
3807 return 0;
3808 }
3809 lastaddr = off + xfs_bmbt_get_blockcount(ep);
3810 max = XFS_FILEOFF_MAX(lastaddr, lowest);
3811 }
3812 *first_unused = max;
3813 return 0;
3814}
3815
3816
3817
3818
3819
3820
3821
3822int
3823xfs_bmap_last_before(
3824 xfs_trans_t *tp,
3825 xfs_inode_t *ip,
3826 xfs_fileoff_t *last_block,
3827 int whichfork)
3828{
3829 xfs_fileoff_t bno;
3830 int eof;
3831 xfs_bmbt_rec_host_t *ep;
3832 int error;
3833 xfs_bmbt_irec_t got;
3834 xfs_ifork_t *ifp;
3835 xfs_extnum_t lastx;
3836 xfs_bmbt_irec_t prev;
3837
3838 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
3839 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
3840 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL)
3841 return XFS_ERROR(EIO);
3842 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) {
3843 *last_block = 0;
3844 return 0;
3845 }
3846 ifp = XFS_IFORK_PTR(ip, whichfork);
3847 if (!(ifp->if_flags & XFS_IFEXTENTS) &&
3848 (error = xfs_iread_extents(tp, ip, whichfork)))
3849 return error;
3850 bno = *last_block - 1;
3851 ep = xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got,
3852 &prev);
3853 if (eof || xfs_bmbt_get_startoff(ep) > bno) {
3854 if (prev.br_startoff == NULLFILEOFF)
3855 *last_block = 0;
3856 else
3857 *last_block = prev.br_startoff + prev.br_blockcount;
3858 }
3859
3860
3861
3862 return 0;
3863}
3864
3865STATIC int
3866xfs_bmap_last_extent(
3867 struct xfs_trans *tp,
3868 struct xfs_inode *ip,
3869 int whichfork,
3870 struct xfs_bmbt_irec *rec,
3871 int *is_empty)
3872{
3873 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
3874 int error;
3875 int nextents;
3876
3877 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
3878 error = xfs_iread_extents(tp, ip, whichfork);
3879 if (error)
3880 return error;
3881 }
3882
3883 nextents = ifp->if_bytes / sizeof(xfs_bmbt_rec_t);
3884 if (nextents == 0) {
3885 *is_empty = 1;
3886 return 0;
3887 }
3888
3889 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, nextents - 1), rec);
3890 *is_empty = 0;
3891 return 0;
3892}
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903STATIC int
3904xfs_bmap_isaeof(
3905 struct xfs_bmalloca *bma,
3906 int whichfork)
3907{
3908 struct xfs_bmbt_irec rec;
3909 int is_empty;
3910 int error;
3911
3912 bma->aeof = 0;
3913 error = xfs_bmap_last_extent(NULL, bma->ip, whichfork, &rec,
3914 &is_empty);
3915 if (error || is_empty)
3916 return error;
3917
3918
3919
3920
3921
3922 bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount ||
3923 (bma->offset >= rec.br_startoff &&
3924 isnullstartblock(rec.br_startblock));
3925 return 0;
3926}
3927
3928
3929
3930
3931
3932
3933int
3934xfs_bmap_eof(
3935 struct xfs_inode *ip,
3936 xfs_fileoff_t endoff,
3937 int whichfork,
3938 int *eof)
3939{
3940 struct xfs_bmbt_irec rec;
3941 int error;
3942
3943 error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, eof);
3944 if (error || *eof)
3945 return error;
3946
3947 *eof = endoff >= rec.br_startoff + rec.br_blockcount;
3948 return 0;
3949}
3950
3951
3952
3953
3954
3955
3956int
3957xfs_bmap_last_offset(
3958 struct xfs_trans *tp,
3959 struct xfs_inode *ip,
3960 xfs_fileoff_t *last_block,
3961 int whichfork)
3962{
3963 struct xfs_bmbt_irec rec;
3964 int is_empty;
3965 int error;
3966
3967 *last_block = 0;
3968
3969 if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL)
3970 return 0;
3971
3972 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE &&
3973 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)
3974 return XFS_ERROR(EIO);
3975
3976 error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, &is_empty);
3977 if (error || is_empty)
3978 return error;
3979
3980 *last_block = rec.br_startoff + rec.br_blockcount;
3981 return 0;
3982}
3983
3984
3985
3986
3987
3988
3989int
3990xfs_bmap_one_block(
3991 xfs_inode_t *ip,
3992 int whichfork)
3993{
3994 xfs_bmbt_rec_host_t *ep;
3995 xfs_ifork_t *ifp;
3996 int rval;
3997 xfs_bmbt_irec_t s;
3998
3999#ifndef DEBUG
4000 if (whichfork == XFS_DATA_FORK)
4001 return XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize;
4002#endif
4003 if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1)
4004 return 0;
4005 if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS)
4006 return 0;
4007 ifp = XFS_IFORK_PTR(ip, whichfork);
4008 ASSERT(ifp->if_flags & XFS_IFEXTENTS);
4009 ep = xfs_iext_get_ext(ifp, 0);
4010 xfs_bmbt_get_all(ep, &s);
4011 rval = s.br_startoff == 0 && s.br_blockcount == 1;
4012 if (rval && whichfork == XFS_DATA_FORK)
4013 ASSERT(XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize);
4014 return rval;
4015}
4016
4017STATIC int
4018xfs_bmap_sanity_check(
4019 struct xfs_mount *mp,
4020 struct xfs_buf *bp,
4021 int level)
4022{
4023 struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
4024
4025 if (block->bb_magic != cpu_to_be32(XFS_BMAP_MAGIC) ||
4026 be16_to_cpu(block->bb_level) != level ||
4027 be16_to_cpu(block->bb_numrecs) == 0 ||
4028 be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
4029 return 0;
4030 return 1;
4031}
4032
4033
4034
4035
4036
4037
4038
4039int
4040xfs_bmap_read_extents(
4041 xfs_trans_t *tp,
4042 xfs_inode_t *ip,
4043 int whichfork)
4044{
4045 struct xfs_btree_block *block;
4046 xfs_fsblock_t bno;
4047 xfs_buf_t *bp;
4048 int error;
4049 xfs_exntfmt_t exntf;
4050 xfs_extnum_t i, j;
4051 xfs_ifork_t *ifp;
4052 int level;
4053 xfs_mount_t *mp;
4054 __be64 *pp;
4055
4056 xfs_extnum_t room;
4057
4058 bno = NULLFSBLOCK;
4059 mp = ip->i_mount;
4060 ifp = XFS_IFORK_PTR(ip, whichfork);
4061 exntf = (whichfork != XFS_DATA_FORK) ? XFS_EXTFMT_NOSTATE :
4062 XFS_EXTFMT_INODE(ip);
4063 block = ifp->if_broot;
4064
4065
4066
4067 level = be16_to_cpu(block->bb_level);
4068 ASSERT(level > 0);
4069 pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
4070 bno = be64_to_cpu(*pp);
4071 ASSERT(bno != NULLDFSBNO);
4072 ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
4073 ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks);
4074
4075
4076
4077
4078 while (level-- > 0) {
4079 if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
4080 XFS_BMAP_BTREE_REF)))
4081 return error;
4082 block = XFS_BUF_TO_BLOCK(bp);
4083 XFS_WANT_CORRUPTED_GOTO(
4084 xfs_bmap_sanity_check(mp, bp, level),
4085 error0);
4086 if (level == 0)
4087 break;
4088 pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
4089 bno = be64_to_cpu(*pp);
4090 XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
4091 xfs_trans_brelse(tp, bp);
4092 }
4093
4094
4095
4096 room = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
4097 i = 0;
4098
4099
4100
4101 for (;;) {
4102 xfs_bmbt_rec_t *frp;
4103 xfs_fsblock_t nextbno;
4104 xfs_extnum_t num_recs;
4105 xfs_extnum_t start;
4106
4107 num_recs = xfs_btree_get_numrecs(block);
4108 if (unlikely(i + num_recs > room)) {
4109 ASSERT(i + num_recs <= room);
4110 xfs_warn(ip->i_mount,
4111 "corrupt dinode %Lu, (btree extents).",
4112 (unsigned long long) ip->i_ino);
4113 XFS_CORRUPTION_ERROR("xfs_bmap_read_extents(1)",
4114 XFS_ERRLEVEL_LOW, ip->i_mount, block);
4115 goto error0;
4116 }
4117 XFS_WANT_CORRUPTED_GOTO(
4118 xfs_bmap_sanity_check(mp, bp, 0),
4119 error0);
4120
4121
4122
4123 nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
4124 if (nextbno != NULLFSBLOCK)
4125 xfs_btree_reada_bufl(mp, nextbno, 1);
4126
4127
4128
4129 frp = XFS_BMBT_REC_ADDR(mp, block, 1);
4130 start = i;
4131 for (j = 0; j < num_recs; j++, i++, frp++) {
4132 xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i);
4133 trp->l0 = be64_to_cpu(frp->l0);
4134 trp->l1 = be64_to_cpu(frp->l1);
4135 }
4136 if (exntf == XFS_EXTFMT_NOSTATE) {
4137
4138
4139
4140
4141
4142 if (unlikely(xfs_check_nostate_extents(ifp,
4143 start, num_recs))) {
4144 XFS_ERROR_REPORT("xfs_bmap_read_extents(2)",
4145 XFS_ERRLEVEL_LOW,
4146 ip->i_mount);
4147 goto error0;
4148 }
4149 }
4150 xfs_trans_brelse(tp, bp);
4151 bno = nextbno;
4152
4153
4154
4155 if (bno == NULLFSBLOCK)
4156 break;
4157 if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
4158 XFS_BMAP_BTREE_REF)))
4159 return error;
4160 block = XFS_BUF_TO_BLOCK(bp);
4161 }
4162 ASSERT(i == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)));
4163 ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork));
4164 XFS_BMAP_TRACE_EXLIST(ip, i, whichfork);
4165 return 0;
4166error0:
4167 xfs_trans_brelse(tp, bp);
4168 return XFS_ERROR(EFSCORRUPTED);
4169}
4170
4171#ifdef DEBUG
4172
4173
4174
4175void
4176xfs_bmap_trace_exlist(
4177 xfs_inode_t *ip,
4178 xfs_extnum_t cnt,
4179 int whichfork,
4180 unsigned long caller_ip)
4181{
4182 xfs_extnum_t idx;
4183 xfs_ifork_t *ifp;
4184 int state = 0;
4185
4186 if (whichfork == XFS_ATTR_FORK)
4187 state |= BMAP_ATTRFORK;
4188
4189 ifp = XFS_IFORK_PTR(ip, whichfork);
4190 ASSERT(cnt == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)));
4191 for (idx = 0; idx < cnt; idx++)
4192 trace_xfs_extlist(ip, idx, whichfork, caller_ip);
4193}
4194
4195
4196
4197
4198
4199
4200
4201STATIC void
4202xfs_bmap_validate_ret(
4203 xfs_fileoff_t bno,
4204 xfs_filblks_t len,
4205 int flags,
4206 xfs_bmbt_irec_t *mval,
4207 int nmap,
4208 int ret_nmap)
4209{
4210 int i;
4211
4212 ASSERT(ret_nmap <= nmap);
4213
4214 for (i = 0; i < ret_nmap; i++) {
4215 ASSERT(mval[i].br_blockcount > 0);
4216 if (!(flags & XFS_BMAPI_ENTIRE)) {
4217 ASSERT(mval[i].br_startoff >= bno);
4218 ASSERT(mval[i].br_blockcount <= len);
4219 ASSERT(mval[i].br_startoff + mval[i].br_blockcount <=
4220 bno + len);
4221 } else {
4222 ASSERT(mval[i].br_startoff < bno + len);
4223 ASSERT(mval[i].br_startoff + mval[i].br_blockcount >
4224 bno);
4225 }
4226 ASSERT(i == 0 ||
4227 mval[i - 1].br_startoff + mval[i - 1].br_blockcount ==
4228 mval[i].br_startoff);
4229 ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK &&
4230 mval[i].br_startblock != HOLESTARTBLOCK);
4231 ASSERT(mval[i].br_state == XFS_EXT_NORM ||
4232 mval[i].br_state == XFS_EXT_UNWRITTEN);
4233 }
4234}
4235#endif
4236
4237
4238
4239
4240
4241STATIC void
4242xfs_bmapi_trim_map(
4243 struct xfs_bmbt_irec *mval,
4244 struct xfs_bmbt_irec *got,
4245 xfs_fileoff_t *bno,
4246 xfs_filblks_t len,
4247 xfs_fileoff_t obno,
4248 xfs_fileoff_t end,
4249 int n,
4250 int flags)
4251{
4252 if ((flags & XFS_BMAPI_ENTIRE) ||
4253 got->br_startoff + got->br_blockcount <= obno) {
4254 *mval = *got;
4255 if (isnullstartblock(got->br_startblock))
4256 mval->br_startblock = DELAYSTARTBLOCK;
4257 return;
4258 }
4259
4260 if (obno > *bno)
4261 *bno = obno;
4262 ASSERT((*bno >= obno) || (n == 0));
4263 ASSERT(*bno < end);
4264 mval->br_startoff = *bno;
4265 if (isnullstartblock(got->br_startblock))
4266 mval->br_startblock = DELAYSTARTBLOCK;
4267 else
4268 mval->br_startblock = got->br_startblock +
4269 (*bno - got->br_startoff);
4270
4271
4272
4273
4274
4275
4276
4277 mval->br_blockcount = XFS_FILBLKS_MIN(end - *bno,
4278 got->br_blockcount - (*bno - got->br_startoff));
4279 mval->br_state = got->br_state;
4280 ASSERT(mval->br_blockcount <= len);
4281 return;
4282}
4283
4284
4285
4286
4287STATIC void
4288xfs_bmapi_update_map(
4289 struct xfs_bmbt_irec **map,
4290 xfs_fileoff_t *bno,
4291 xfs_filblks_t *len,
4292 xfs_fileoff_t obno,
4293 xfs_fileoff_t end,
4294 int *n,
4295 int flags)
4296{
4297 xfs_bmbt_irec_t *mval = *map;
4298
4299 ASSERT((flags & XFS_BMAPI_ENTIRE) ||
4300 ((mval->br_startoff + mval->br_blockcount) <= end));
4301 ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= *len) ||
4302 (mval->br_startoff < obno));
4303
4304 *bno = mval->br_startoff + mval->br_blockcount;
4305 *len = end - *bno;
4306 if (*n > 0 && mval->br_startoff == mval[-1].br_startoff) {
4307
4308 ASSERT(mval->br_startblock == mval[-1].br_startblock);
4309 ASSERT(mval->br_blockcount > mval[-1].br_blockcount);
4310 ASSERT(mval->br_state == mval[-1].br_state);
4311 mval[-1].br_blockcount = mval->br_blockcount;
4312 mval[-1].br_state = mval->br_state;
4313 } else if (*n > 0 && mval->br_startblock != DELAYSTARTBLOCK &&
4314 mval[-1].br_startblock != DELAYSTARTBLOCK &&
4315 mval[-1].br_startblock != HOLESTARTBLOCK &&
4316 mval->br_startblock == mval[-1].br_startblock +
4317 mval[-1].br_blockcount &&
4318 ((flags & XFS_BMAPI_IGSTATE) ||
4319 mval[-1].br_state == mval->br_state)) {
4320 ASSERT(mval->br_startoff ==
4321 mval[-1].br_startoff + mval[-1].br_blockcount);
4322 mval[-1].br_blockcount += mval->br_blockcount;
4323 } else if (*n > 0 &&
4324 mval->br_startblock == DELAYSTARTBLOCK &&
4325 mval[-1].br_startblock == DELAYSTARTBLOCK &&
4326 mval->br_startoff ==
4327 mval[-1].br_startoff + mval[-1].br_blockcount) {
4328 mval[-1].br_blockcount += mval->br_blockcount;
4329 mval[-1].br_state = mval->br_state;
4330 } else if (!((*n == 0) &&
4331 ((mval->br_startoff + mval->br_blockcount) <=
4332 obno))) {
4333 mval++;
4334 (*n)++;
4335 }
4336 *map = mval;
4337}
4338
4339
4340
4341
4342int
4343xfs_bmapi_read(
4344 struct xfs_inode *ip,
4345 xfs_fileoff_t bno,
4346 xfs_filblks_t len,
4347 struct xfs_bmbt_irec *mval,
4348 int *nmap,
4349 int flags)
4350{
4351 struct xfs_mount *mp = ip->i_mount;
4352 struct xfs_ifork *ifp;
4353 struct xfs_bmbt_irec got;
4354 struct xfs_bmbt_irec prev;
4355 xfs_fileoff_t obno;
4356 xfs_fileoff_t end;
4357 xfs_extnum_t lastx;
4358 int error;
4359 int eof;
4360 int n = 0;
4361 int whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
4362 XFS_ATTR_FORK : XFS_DATA_FORK;
4363
4364 ASSERT(*nmap >= 1);
4365 ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE|
4366 XFS_BMAPI_IGSTATE)));
4367
4368 if (unlikely(XFS_TEST_ERROR(
4369 (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
4370 XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
4371 mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
4372 XFS_ERROR_REPORT("xfs_bmapi_read", XFS_ERRLEVEL_LOW, mp);
4373 return XFS_ERROR(EFSCORRUPTED);
4374 }
4375
4376 if (XFS_FORCED_SHUTDOWN(mp))
4377 return XFS_ERROR(EIO);
4378
4379 XFS_STATS_INC(xs_blk_mapr);
4380
4381 ifp = XFS_IFORK_PTR(ip, whichfork);
4382
4383 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
4384 error = xfs_iread_extents(NULL, ip, whichfork);
4385 if (error)
4386 return error;
4387 }
4388
4389 xfs_bmap_search_extents(ip, bno, whichfork, &eof, &lastx, &got, &prev);
4390 end = bno + len;
4391 obno = bno;
4392
4393 while (bno < end && n < *nmap) {
4394
4395 if (eof)
4396 got.br_startoff = end;
4397 if (got.br_startoff > bno) {
4398
4399 mval->br_startoff = bno;
4400 mval->br_startblock = HOLESTARTBLOCK;
4401 mval->br_blockcount =
4402 XFS_FILBLKS_MIN(len, got.br_startoff - bno);
4403 mval->br_state = XFS_EXT_NORM;
4404 bno += mval->br_blockcount;
4405 len -= mval->br_blockcount;
4406 mval++;
4407 n++;
4408 continue;
4409 }
4410
4411
4412 xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags);
4413 xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags);
4414
4415
4416 if (bno >= end || n >= *nmap)
4417 break;
4418
4419
4420 if (++lastx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t))
4421 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, lastx), &got);
4422 else
4423 eof = 1;
4424 }
4425 *nmap = n;
4426 return 0;
4427}
4428
4429STATIC int
4430xfs_bmapi_reserve_delalloc(
4431 struct xfs_inode *ip,
4432 xfs_fileoff_t aoff,
4433 xfs_filblks_t len,
4434 struct xfs_bmbt_irec *got,
4435 struct xfs_bmbt_irec *prev,
4436 xfs_extnum_t *lastx,
4437 int eof)
4438{
4439 struct xfs_mount *mp = ip->i_mount;
4440 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
4441 xfs_extlen_t alen;
4442 xfs_extlen_t indlen;
4443 char rt = XFS_IS_REALTIME_INODE(ip);
4444 xfs_extlen_t extsz;
4445 int error;
4446
4447 alen = XFS_FILBLKS_MIN(len, MAXEXTLEN);
4448 if (!eof)
4449 alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff);
4450
4451
4452 extsz = xfs_get_extsz_hint(ip);
4453 if (extsz) {
4454
4455
4456
4457
4458
4459
4460 alen = XFS_FILBLKS_MIN(len, MAXEXTLEN - (2 * extsz - 1));
4461 error = xfs_bmap_extsize_align(mp, got, prev, extsz, rt, eof,
4462 1, 0, &aoff, &alen);
4463 ASSERT(!error);
4464 }
4465
4466 if (rt)
4467 extsz = alen / mp->m_sb.sb_rextsize;
4468
4469
4470
4471
4472
4473
4474 error = xfs_trans_reserve_quota_nblks(NULL, ip, (long)alen, 0,
4475 rt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS);
4476 if (error)
4477 return error;
4478
4479
4480
4481
4482
4483 indlen = (xfs_extlen_t)xfs_bmap_worst_indlen(ip, alen);
4484 ASSERT(indlen > 0);
4485
4486 if (rt) {
4487 error = xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS,
4488 -((int64_t)extsz), 0);
4489 } else {
4490 error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS,
4491 -((int64_t)alen), 0);
4492 }
4493
4494 if (error)
4495 goto out_unreserve_quota;
4496
4497 error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS,
4498 -((int64_t)indlen), 0);
4499 if (error)
4500 goto out_unreserve_blocks;
4501
4502
4503 ip->i_delayed_blks += alen;
4504
4505 got->br_startoff = aoff;
4506 got->br_startblock = nullstartblock(indlen);
4507 got->br_blockcount = alen;
4508 got->br_state = XFS_EXT_NORM;
4509 xfs_bmap_add_extent_hole_delay(ip, lastx, got);
4510
4511
4512
4513
4514
4515 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx), got);
4516
4517 ASSERT(got->br_startoff <= aoff);
4518 ASSERT(got->br_startoff + got->br_blockcount >= aoff + alen);
4519 ASSERT(isnullstartblock(got->br_startblock));
4520 ASSERT(got->br_state == XFS_EXT_NORM);
4521 return 0;
4522
4523out_unreserve_blocks:
4524 if (rt)
4525 xfs_mod_incore_sb(mp, XFS_SBS_FREXTENTS, extsz, 0);
4526 else
4527 xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, alen, 0);
4528out_unreserve_quota:
4529 if (XFS_IS_QUOTA_ON(mp))
4530 xfs_trans_unreserve_quota_nblks(NULL, ip, alen, 0, rt ?
4531 XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS);
4532 return error;
4533}
4534
4535
4536
4537
4538int
4539xfs_bmapi_delay(
4540 struct xfs_inode *ip,
4541 xfs_fileoff_t bno,
4542 xfs_filblks_t len,
4543 struct xfs_bmbt_irec *mval,
4544 int *nmap,
4545 int flags)
4546{
4547 struct xfs_mount *mp = ip->i_mount;
4548 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
4549 struct xfs_bmbt_irec got;
4550 struct xfs_bmbt_irec prev;
4551 xfs_fileoff_t obno;
4552 xfs_fileoff_t end;
4553 xfs_extnum_t lastx;
4554 int eof;
4555 int n = 0;
4556 int error = 0;
4557
4558 ASSERT(*nmap >= 1);
4559 ASSERT(*nmap <= XFS_BMAP_MAX_NMAP);
4560 ASSERT(!(flags & ~XFS_BMAPI_ENTIRE));
4561
4562 if (unlikely(XFS_TEST_ERROR(
4563 (XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_EXTENTS &&
4564 XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_BTREE),
4565 mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) {
4566 XFS_ERROR_REPORT("xfs_bmapi_delay", XFS_ERRLEVEL_LOW, mp);
4567 return XFS_ERROR(EFSCORRUPTED);
4568 }
4569
4570 if (XFS_FORCED_SHUTDOWN(mp))
4571 return XFS_ERROR(EIO);
4572
4573 XFS_STATS_INC(xs_blk_mapw);
4574
4575 if (!(ifp->if_flags & XFS_IFEXTENTS)) {
4576 error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
4577 if (error)
4578 return error;
4579 }
4580
4581 xfs_bmap_search_extents(ip, bno, XFS_DATA_FORK, &eof, &lastx, &got, &prev);
4582 end = bno + len;
4583 obno = bno;
4584
4585 while (bno < end && n < *nmap) {
4586 if (eof || got.br_startoff > bno) {
4587 error = xfs_bmapi_reserve_delalloc(ip, bno, len, &got,
4588 &prev, &lastx, eof);
4589 if (error) {
4590 if (n == 0) {
4591 *nmap = 0;
4592 return error;
4593 }
4594 break;
4595 }
4596 }
4597
4598
4599 xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags);
4600 xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags);
4601
4602
4603 if (bno >= end || n >= *nmap)
4604 break;
4605
4606
4607 prev = got;
4608 if (++lastx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t))
4609 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, lastx), &got);
4610 else
4611 eof = 1;
4612 }
4613
4614 *nmap = n;
4615 return 0;
4616}
4617
4618
4619STATIC int
4620xfs_bmapi_allocate(
4621 struct xfs_bmalloca *bma,
4622 int flags)
4623{
4624 struct xfs_mount *mp = bma->ip->i_mount;
4625 int whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
4626 XFS_ATTR_FORK : XFS_DATA_FORK;
4627 struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork);
4628 int tmp_logflags = 0;
4629 int error;
4630 int rt;
4631
4632 ASSERT(bma->length > 0);
4633
4634 rt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(bma->ip);
4635
4636
4637
4638
4639
4640 if (bma->wasdel) {
4641 bma->length = (xfs_extlen_t)bma->got.br_blockcount;
4642 bma->offset = bma->got.br_startoff;
4643 if (bma->idx != NULLEXTNUM && bma->idx) {
4644 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1),
4645 &bma->prev);
4646 }
4647 } else {
4648 bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN);
4649 if (!bma->eof)
4650 bma->length = XFS_FILBLKS_MIN(bma->length,
4651 bma->got.br_startoff - bma->offset);
4652 }
4653
4654
4655
4656
4657
4658 if (!(flags & XFS_BMAPI_METADATA)) {
4659 bma->userdata = (bma->offset == 0) ?
4660 XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA;
4661 }
4662
4663 bma->minlen = (flags & XFS_BMAPI_CONTIG) ? bma->length : 1;
4664
4665
4666
4667
4668
4669 if (mp->m_dalign && bma->length >= mp->m_dalign &&
4670 !(flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) {
4671 error = xfs_bmap_isaeof(bma, whichfork);
4672 if (error)
4673 return error;
4674 }
4675
4676 error = xfs_bmap_alloc(bma);
4677 if (error)
4678 return error;
4679
4680 if (bma->flist->xbf_low)
4681 bma->minleft = 0;
4682 if (bma->cur)
4683 bma->cur->bc_private.b.firstblock = *bma->firstblock;
4684 if (bma->blkno == NULLFSBLOCK)
4685 return 0;
4686 if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) {
4687 bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork);
4688 bma->cur->bc_private.b.firstblock = *bma->firstblock;
4689 bma->cur->bc_private.b.flist = bma->flist;
4690 }
4691
4692
4693
4694
4695 bma->nallocs++;
4696
4697 if (bma->cur)
4698 bma->cur->bc_private.b.flags =
4699 bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;
4700
4701 bma->got.br_startoff = bma->offset;
4702 bma->got.br_startblock = bma->blkno;
4703 bma->got.br_blockcount = bma->length;
4704 bma->got.br_state = XFS_EXT_NORM;
4705
4706
4707
4708
4709
4710 if (!bma->wasdel && (flags & XFS_BMAPI_PREALLOC) &&
4711 xfs_sb_version_hasextflgbit(&mp->m_sb))
4712 bma->got.br_state = XFS_EXT_UNWRITTEN;
4713
4714 if (bma->wasdel)
4715 error = xfs_bmap_add_extent_delay_real(bma);
4716 else
4717 error = xfs_bmap_add_extent_hole_real(bma, whichfork);
4718
4719 bma->logflags |= tmp_logflags;
4720 if (error)
4721 return error;
4722
4723
4724
4725
4726
4727
4728 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got);
4729
4730 ASSERT(bma->got.br_startoff <= bma->offset);
4731 ASSERT(bma->got.br_startoff + bma->got.br_blockcount >=
4732 bma->offset + bma->length);
4733 ASSERT(bma->got.br_state == XFS_EXT_NORM ||
4734 bma->got.br_state == XFS_EXT_UNWRITTEN);
4735 return 0;
4736}
4737
4738STATIC int
4739xfs_bmapi_convert_unwritten(
4740 struct xfs_bmalloca *bma,
4741 struct xfs_bmbt_irec *mval,
4742 xfs_filblks_t len,
4743 int flags)
4744{
4745 int whichfork = (flags & XFS_BMAPI_ATTRFORK) ?
4746 XFS_ATTR_FORK : XFS_DATA_FORK;
4747 struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork);
4748 int tmp_logflags = 0;
4749 int error;
4750
4751
4752 if (mval->br_state == XFS_EXT_UNWRITTEN &&
4753 (flags & XFS_BMAPI_PREALLOC))
4754 return 0;
4755
4756
4757 if (mval->br_state == XFS_EXT_NORM &&
4758 (flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) !=
4759 (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT))
4760 return 0;
4761
4762
4763
4764
4765 ASSERT(mval->br_blockcount <= len);
4766 if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) {
4767 bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp,
4768 bma->ip, whichfork);
4769 bma->cur->bc_private.b.firstblock = *bma->firstblock;
4770 bma->cur->bc_private.b.flist = bma->flist;
4771 }
4772 mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN)
4773 ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN;
4774
4775 error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, &bma->idx,
4776 &bma->cur, mval, bma->firstblock, bma->flist,
4777 &tmp_logflags);
4778 bma->logflags |= tmp_logflags;
4779 if (error)
4780 return error;
4781
4782
4783
4784
4785
4786
4787 xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got);
4788
4789
4790
4791
4792
4793 if (mval->br_blockcount < len)
4794 return EAGAIN;
4795 return 0;
4796}
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810int
4811xfs_bmapi_write(
4812 struct xfs_trans *tp,
4813 struct xfs_inode *ip,
4814 xfs_fileoff_t bno,
4815 xfs_filblks_t len,
4816 int flags,
4817 xfs_fsblock_t *firstblock,
4818
4819 xfs_extlen_t total,
4820 struct xfs_bmbt_irec *mval,
4821 int *nmap,
4822 struct xfs_bmap_free *flist)
4823{
4824 struct xfs_mount *mp = ip->i_mount;
4825 struct xfs_ifork *ifp;
4826 struct xfs_bmalloca bma = { 0 };
4827 xfs_fileoff_t end;
4828 int eof;
4829 int error;
4830 int n;
4831 xfs_fileoff_t obno;
4832 int whichfork;
4833 char inhole;
4834 char wasdelay;
4835
4836#ifdef DEBUG
4837 xfs_fileoff_t orig_bno;
4838 int orig_flags;
4839 xfs_filblks_t orig_len;
4840 struct xfs_bmbt_irec *orig_mval;
4841 int orig_nmap;
4842
4843 orig_bno = bno;
4844 orig_len = len;
4845 orig_flags = flags;
4846 orig_mval = mval;
4847 orig_nmap = *nmap;
4848#endif
4849
4850 ASSERT(*nmap >= 1);
4851 ASSERT(*nmap <= XFS_BMAP_MAX_NMAP);
4852 ASSERT(!(flags & XFS_BMAPI_IGSTATE));
4853 ASSERT(tp != NULL);
