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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_dmapi.h"
29#include "xfs_mount.h"
30#include "xfs_bmap_btree.h"
31#include "xfs_alloc_btree.h"
32#include "xfs_ialloc_btree.h"
33#include "xfs_dir2_sf.h"
34#include "xfs_attr_sf.h"
35#include "xfs_dinode.h"
36#include "xfs_inode.h"
37#include "xfs_btree.h"
38#include "xfs_ialloc.h"
39#include "xfs_alloc.h"
40#include "xfs_bmap.h"
41#include "xfs_rtalloc.h"
42#include "xfs_fsops.h"
43#include "xfs_error.h"
44#include "xfs_rw.h"
45#include "xfs_inode_item.h"
46#include "xfs_trans_space.h"
47#include "xfs_utils.h"
48
49
50
51
52
53
54
55STATIC int xfs_rtallocate_range(xfs_mount_t *, xfs_trans_t *, xfs_rtblock_t,
56 xfs_extlen_t, xfs_buf_t **, xfs_fsblock_t *);
57STATIC int xfs_rtany_summary(xfs_mount_t *, xfs_trans_t *, int, int,
58 xfs_rtblock_t, xfs_buf_t **, xfs_fsblock_t *, int *);
59STATIC int xfs_rtcheck_range(xfs_mount_t *, xfs_trans_t *, xfs_rtblock_t,
60 xfs_extlen_t, int, xfs_rtblock_t *, int *);
61STATIC int xfs_rtfind_back(xfs_mount_t *, xfs_trans_t *, xfs_rtblock_t,
62 xfs_rtblock_t, xfs_rtblock_t *);
63STATIC int xfs_rtfind_forw(xfs_mount_t *, xfs_trans_t *, xfs_rtblock_t,
64 xfs_rtblock_t, xfs_rtblock_t *);
65STATIC int xfs_rtget_summary( xfs_mount_t *, xfs_trans_t *, int,
66 xfs_rtblock_t, xfs_buf_t **, xfs_fsblock_t *, xfs_suminfo_t *);
67STATIC int xfs_rtmodify_range(xfs_mount_t *, xfs_trans_t *, xfs_rtblock_t,
68 xfs_extlen_t, int);
69STATIC int xfs_rtmodify_summary(xfs_mount_t *, xfs_trans_t *, int,
70 xfs_rtblock_t, int, xfs_buf_t **, xfs_fsblock_t *);
71
72
73
74
75
76
77
78
79STATIC int
80xfs_growfs_rt_alloc(
81 xfs_mount_t *mp,
82 xfs_extlen_t oblocks,
83 xfs_extlen_t nblocks,
84 xfs_ino_t ino)
85{
86 xfs_fileoff_t bno;
87 xfs_buf_t *bp;
88 int committed;
89 xfs_daddr_t d;
90 int error;
91 xfs_fsblock_t firstblock;
92 xfs_bmap_free_t flist;
93 xfs_fsblock_t fsbno;
94 xfs_inode_t *ip;
95 xfs_bmbt_irec_t map;
96 int nmap;
97 int resblks;
98
99
100
101
102 while (oblocks < nblocks) {
103 int cancelflags = 0;
104 xfs_trans_t *tp;
105
106 tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFSRT_ALLOC);
107 resblks = XFS_GROWFSRT_SPACE_RES(mp, nblocks - oblocks);
108
109
110
111 if ((error = xfs_trans_reserve(tp, resblks,
112 XFS_GROWRTALLOC_LOG_RES(mp), 0,
113 XFS_TRANS_PERM_LOG_RES,
114 XFS_DEFAULT_PERM_LOG_COUNT)))
115 goto error_cancel;
116 cancelflags = XFS_TRANS_RELEASE_LOG_RES;
117
118
119
120 if ((error = xfs_trans_iget(mp, tp, ino, 0,
121 XFS_ILOCK_EXCL, &ip)))
122 goto error_cancel;
123 xfs_bmap_init(&flist, &firstblock);
124
125
126
127 nmap = 1;
128 cancelflags |= XFS_TRANS_ABORT;
129 error = xfs_bmapi(tp, ip, oblocks, nblocks - oblocks,
130 XFS_BMAPI_WRITE | XFS_BMAPI_METADATA, &firstblock,
131 resblks, &map, &nmap, &flist, NULL);
132 if (!error && nmap < 1)
133 error = XFS_ERROR(ENOSPC);
134 if (error)
135 goto error_cancel;
136
137
138
139 error = xfs_bmap_finish(&tp, &flist, &committed);
140 if (error)
141 goto error_cancel;
142 error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
143 if (error)
144 goto error;
145
146
147
148
149 cancelflags = 0;
150 for (bno = map.br_startoff, fsbno = map.br_startblock;
151 bno < map.br_startoff + map.br_blockcount;
152 bno++, fsbno++) {
153 tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFSRT_ZERO);
154
155
156
157 if ((error = xfs_trans_reserve(tp, 0,
158 XFS_GROWRTZERO_LOG_RES(mp), 0, 0, 0)))
159 goto error_cancel;
160
161
162
163 if ((error = xfs_trans_iget(mp, tp, ino, 0,
164 XFS_ILOCK_EXCL, &ip)))
165 goto error_cancel;
166
167
168
169 d = XFS_FSB_TO_DADDR(mp, fsbno);
170 bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, d,
171 mp->m_bsize, 0);
172 if (bp == NULL) {
173 error = XFS_ERROR(EIO);
174error_cancel:
175 xfs_trans_cancel(tp, cancelflags);
176 goto error;
177 }
178 memset(XFS_BUF_PTR(bp), 0, mp->m_sb.sb_blocksize);
179 xfs_trans_log_buf(tp, bp, 0, mp->m_sb.sb_blocksize - 1);
180
181
182
183 error = xfs_trans_commit(tp, 0);
184 if (error)
185 goto error;
186 }
187
188
189
190 oblocks = map.br_startoff + map.br_blockcount;
191 }
192 return 0;
193error:
194 return error;
195}
196
197
198
199
200
201
202
203STATIC int
204xfs_rtallocate_extent_block(
205 xfs_mount_t *mp,
206 xfs_trans_t *tp,
207 xfs_rtblock_t bbno,
208 xfs_extlen_t minlen,
209 xfs_extlen_t maxlen,
210 xfs_extlen_t *len,
211 xfs_rtblock_t *nextp,
212 xfs_buf_t **rbpp,
213 xfs_fsblock_t *rsb,
214 xfs_extlen_t prod,
215 xfs_rtblock_t *rtblock)
216{
217 xfs_rtblock_t besti;
218 xfs_rtblock_t bestlen;
219 xfs_rtblock_t end;
220 int error;
221 xfs_rtblock_t i;
222 xfs_rtblock_t next;
223 int stat;
224
225
226
227
228
229 for (i = XFS_BLOCKTOBIT(mp, bbno), besti = -1, bestlen = 0,
230 end = XFS_BLOCKTOBIT(mp, bbno + 1) - 1;
231 i <= end;
232 i++) {
233
234
235
236
237 error = xfs_rtcheck_range(mp, tp, i, maxlen, 1, &next, &stat);
238 if (error) {
239 return error;
240 }
241 if (stat) {
242
243
244
245 error = xfs_rtallocate_range(mp, tp, i, maxlen, rbpp,
246 rsb);
247 if (error) {
248 return error;
249 }
250 *len = maxlen;
251 *rtblock = i;
252 return 0;
253 }
254
255
256
257
258
259
260 if (minlen < maxlen) {
261 xfs_rtblock_t thislen;
262
263 thislen = next - i;
264 if (thislen >= minlen && thislen > bestlen) {
265 besti = i;
266 bestlen = thislen;
267 }
268 }
269
270
271
272 if (next < end) {
273 error = xfs_rtfind_forw(mp, tp, next, end, &i);
274 if (error) {
275 return error;
276 }
277 } else
278 break;
279 }
280
281
282
283 if (minlen < maxlen && besti != -1) {
284 xfs_extlen_t p;
285
286
287
288
289 if (prod > 1 && (p = do_mod(bestlen, prod)))
290 bestlen -= p;
291
292
293
294 error = xfs_rtallocate_range(mp, tp, besti, bestlen, rbpp, rsb);
295 if (error) {
296 return error;
297 }
298 *len = bestlen;
299 *rtblock = besti;
300 return 0;
301 }
302
303
304
305 *nextp = next;
306 *rtblock = NULLRTBLOCK;
307 return 0;
308}
309
310
311
312
313
314
315
316STATIC int
317xfs_rtallocate_extent_exact(
318 xfs_mount_t *mp,
319 xfs_trans_t *tp,
320 xfs_rtblock_t bno,
321 xfs_extlen_t minlen,
322 xfs_extlen_t maxlen,
323 xfs_extlen_t *len,
324 xfs_buf_t **rbpp,
325 xfs_fsblock_t *rsb,
326 xfs_extlen_t prod,
327 xfs_rtblock_t *rtblock)
328{
329 int error;
330 xfs_extlen_t i;
331 int isfree;
332 xfs_rtblock_t next;
333
334 ASSERT(minlen % prod == 0 && maxlen % prod == 0);
335
336
337
338 error = xfs_rtcheck_range(mp, tp, bno, maxlen, 1, &next, &isfree);
339 if (error) {
340 return error;
341 }
342 if (isfree) {
343
344
345
346 error = xfs_rtallocate_range(mp, tp, bno, maxlen, rbpp, rsb);
347 if (error) {
348 return error;
349 }
350 *len = maxlen;
351 *rtblock = bno;
352 return 0;
353 }
354
355
356
357 maxlen = next - bno;
358 if (maxlen < minlen) {
359
360
361
362 *rtblock = NULLRTBLOCK;
363 return 0;
364 }
365
366
367
368 if (prod > 1 && (i = maxlen % prod)) {
369 maxlen -= i;
370 if (maxlen < minlen) {
371
372
373
374 *rtblock = NULLRTBLOCK;
375 return 0;
376 }
377 }
378
379
380
381 error = xfs_rtallocate_range(mp, tp, bno, maxlen, rbpp, rsb);
382 if (error) {
383 return error;
384 }
385 *len = maxlen;
386 *rtblock = bno;
387 return 0;
388}
389
390
391
392
393
394
395STATIC int
396xfs_rtallocate_extent_near(
397 xfs_mount_t *mp,
398 xfs_trans_t *tp,
399 xfs_rtblock_t bno,
400 xfs_extlen_t minlen,
401 xfs_extlen_t maxlen,
402 xfs_extlen_t *len,
403 xfs_buf_t **rbpp,
404 xfs_fsblock_t *rsb,
405 xfs_extlen_t prod,
406 xfs_rtblock_t *rtblock)
407{
408 int any;
409 xfs_rtblock_t bbno;
410 int error;
411 int i;
412 int j;
413 int log2len;
414 xfs_rtblock_t n;
415 xfs_rtblock_t r;
416
417 ASSERT(minlen % prod == 0 && maxlen % prod == 0);
418
419
420
421
422 if (bno >= mp->m_sb.sb_rextents)
423 bno = mp->m_sb.sb_rextents - 1;
424
425
426
427 error = xfs_rtallocate_extent_exact(mp, tp, bno, minlen, maxlen, len,
428 rbpp, rsb, prod, &r);
429 if (error) {
430 return error;
431 }
432
433
434
435 if (r != NULLRTBLOCK) {
436 *rtblock = r;
437 return 0;
438 }
439 bbno = XFS_BITTOBLOCK(mp, bno);
440 i = 0;
441 ASSERT(minlen != 0);
442 log2len = xfs_highbit32(minlen);
443
444
445
446 for (;;) {
447
448
449
450
451 error = xfs_rtany_summary(mp, tp, log2len, mp->m_rsumlevels - 1,
452 bbno + i, rbpp, rsb, &any);
453 if (error) {
454 return error;
455 }
456
457
458
459
460 if (any) {
461
462
463
464 if (i >= 0) {
465
466
467
468
469 error = xfs_rtallocate_extent_block(mp, tp,
470 bbno + i, minlen, maxlen, len, &n, rbpp,
471 rsb, prod, &r);
472 if (error) {
473 return error;
474 }
475
476
477
478 if (r != NULLRTBLOCK) {
479 *rtblock = r;
480 return 0;
481 }
482 }
483
484
485
486 else {
487
488
489
490
491
492
493 for (j = -1; j > i; j--) {
494
495
496
497
498 error = xfs_rtany_summary(mp, tp,
499 log2len, mp->m_rsumlevels - 1,
500 bbno + j, rbpp, rsb, &any);
501 if (error) {
502 return error;
503 }
504
505
506
507
508
509
510
511
512 if (any)
513 continue;
514 error = xfs_rtallocate_extent_block(mp,
515 tp, bbno + j, minlen, maxlen,
516 len, &n, rbpp, rsb, prod, &r);
517 if (error) {
518 return error;
519 }
520
521
522
523 if (r != NULLRTBLOCK) {
524 *rtblock = r;
525 return 0;
526 }
527 }
528
529
530
531
532
533
534
535
536 error = xfs_rtallocate_extent_block(mp, tp,
537 bbno + i, minlen, maxlen, len, &n, rbpp,
538 rsb, prod, &r);
539 if (error) {
540 return error;
541 }
542
543
544
545 if (r != NULLRTBLOCK) {
546 *rtblock = r;
547 return 0;
548 }
549 }
550 }
551
552
553
554
555 if (i > 0 && (int)bbno - i >= 0)
556 i = -i;
557
558
559
560
561 else if (i > 0 && (int)bbno + i < mp->m_sb.sb_rbmblocks - 1)
562 i++;
563
564
565
566
567 else if (i <= 0 && (int)bbno - i < mp->m_sb.sb_rbmblocks - 1)
568 i = 1 - i;
569
570
571
572
573 else if (i <= 0 && (int)bbno + i > 0)
574 i--;
575
576
577
578 else
579 break;
580 }
581 *rtblock = NULLRTBLOCK;
582 return 0;
583}
584
585
586
587
588
589
590STATIC int
591xfs_rtallocate_extent_size(
592 xfs_mount_t *mp,
593 xfs_trans_t *tp,
594 xfs_extlen_t minlen,
595 xfs_extlen_t maxlen,
596 xfs_extlen_t *len,
597 xfs_buf_t **rbpp,
598 xfs_fsblock_t *rsb,
599 xfs_extlen_t prod,
600 xfs_rtblock_t *rtblock)
601{
602 int error;
603 int i;
604 int l;
605 xfs_rtblock_t n;
606 xfs_rtblock_t r;
607 xfs_suminfo_t sum;
608
609 ASSERT(minlen % prod == 0 && maxlen % prod == 0);
610 ASSERT(maxlen != 0);
611
612
613
614
615
616
617
618
619 for (l = xfs_highbit32(maxlen); l < mp->m_rsumlevels; l++) {
620
621
622
623 for (i = 0; i < mp->m_sb.sb_rbmblocks; i++) {
624
625
626
627 error = xfs_rtget_summary(mp, tp, l, i, rbpp, rsb,
628 &sum);
629 if (error) {
630 return error;
631 }
632
633
634
635 if (!sum)
636 continue;
637
638
639
640 error = xfs_rtallocate_extent_block(mp, tp, i, maxlen,
641 maxlen, len, &n, rbpp, rsb, prod, &r);
642 if (error) {
643 return error;
644 }
645
646
647
648 if (r != NULLRTBLOCK) {
649 *rtblock = r;
650 return 0;
651 }
652
653
654
655
656
657 if (XFS_BITTOBLOCK(mp, n) > i + 1)
658 i = XFS_BITTOBLOCK(mp, n) - 1;
659 }
660 }
661
662
663
664
665 if (minlen > --maxlen) {
666 *rtblock = NULLRTBLOCK;
667 return 0;
668 }
669 ASSERT(minlen != 0);
670 ASSERT(maxlen != 0);
671
672
673
674
675
676
677 for (l = xfs_highbit32(maxlen); l >= xfs_highbit32(minlen); l--) {
678
679
680
681
682 for (i = 0; i < mp->m_sb.sb_rbmblocks; i++) {
683
684
685
686 error = xfs_rtget_summary(mp, tp, l, i, rbpp, rsb,
687 &sum);
688 if (error) {
689 return error;
690 }
691
692
693
694 if (!sum)
695 continue;
696
697
698
699
700
701 error = xfs_rtallocate_extent_block(mp, tp, i,
702 XFS_RTMAX(minlen, 1 << l),
703 XFS_RTMIN(maxlen, (1 << (l + 1)) - 1),
704 len, &n, rbpp, rsb, prod, &r);
705 if (error) {
706 return error;
707 }
708
709
710
711 if (r != NULLRTBLOCK) {
712 *rtblock = r;
713 return 0;
714 }
715
716
717
718
719
720 if (XFS_BITTOBLOCK(mp, n) > i + 1)
721 i = XFS_BITTOBLOCK(mp, n) - 1;
722 }
723 }
724
725
726
727 *rtblock = NULLRTBLOCK;
728 return 0;
729}
730
731
732
733
734
735STATIC int
736xfs_rtallocate_range(
737 xfs_mount_t *mp,
738 xfs_trans_t *tp,
739 xfs_rtblock_t start,
740 xfs_extlen_t len,
741 xfs_buf_t **rbpp,
742 xfs_fsblock_t *rsb)
743{
744 xfs_rtblock_t end;
745 int error;
746 xfs_rtblock_t postblock;
747 xfs_rtblock_t preblock;
748
749 end = start + len - 1;
750
751
752
753
754
755 error = xfs_rtfind_back(mp, tp, start, 0, &preblock);
756 if (error) {
757 return error;
758 }
759
760
761
762 error = xfs_rtfind_forw(mp, tp, end, mp->m_sb.sb_rextents - 1,
763 &postblock);
764 if (error) {
765 return error;
766 }
767
768
769
770
771 error = xfs_rtmodify_summary(mp, tp,
772 XFS_RTBLOCKLOG(postblock + 1 - preblock),
773 XFS_BITTOBLOCK(mp, preblock), -1, rbpp, rsb);
774 if (error) {
775 return error;
776 }
777
778
779
780
781 if (preblock < start) {
782 error = xfs_rtmodify_summary(mp, tp,
783 XFS_RTBLOCKLOG(start - preblock),
784 XFS_BITTOBLOCK(mp, preblock), 1, rbpp, rsb);
785 if (error) {
786 return error;
787 }
788 }
789
790
791
792
793 if (postblock > end) {
794 error = xfs_rtmodify_summary(mp, tp,
795 XFS_RTBLOCKLOG(postblock - end),
796 XFS_BITTOBLOCK(mp, end + 1), 1, rbpp, rsb);
797 if (error) {
798 return error;
799 }
800 }
801
802
803
804 error = xfs_rtmodify_range(mp, tp, start, len, 0);
805 return error;
806}
807
808
809
810
811
812STATIC int
813xfs_rtany_summary(
814 xfs_mount_t *mp,
815 xfs_trans_t *tp,
816 int low,
817 int high,
818 xfs_rtblock_t bbno,
819 xfs_buf_t **rbpp,
820 xfs_fsblock_t *rsb,
821 int *stat)
822{
823 int error;
824 int log;
825 xfs_suminfo_t sum;
826
827
828
829
830 for (log = low; log <= high; log++) {
831
832
833
834 error = xfs_rtget_summary(mp, tp, log, bbno, rbpp, rsb, &sum);
835 if (error) {
836 return error;
837 }
838
839
840
841 if (sum) {
842 *stat = 1;
843 return 0;
844 }
845 }
846
847
848
849 *stat = 0;
850 return 0;
851}
852
853
854
855
856
857STATIC int
858xfs_rtbuf_get(
859 xfs_mount_t *mp,
860 xfs_trans_t *tp,
861 xfs_rtblock_t block,
862 int issum,
863 xfs_buf_t **bpp)
864{
865 xfs_buf_t *bp;
866 xfs_daddr_t d;
867 int error;
868 xfs_fsblock_t fsb;
869 xfs_inode_t *ip;
870
871 ip = issum ? mp->m_rsumip : mp->m_rbmip;
872
873
874
875
876 error = xfs_bmapi_single(tp, ip, XFS_DATA_FORK, &fsb, block);
877 if (error) {
878 return error;
879 }
880 ASSERT(fsb != NULLFSBLOCK);
881
882
883
884 d = XFS_FSB_TO_DADDR(mp, fsb);
885
886
887
888 error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, d,
889 mp->m_bsize, 0, &bp);
890 if (error) {
891 return error;
892 }
893 ASSERT(bp && !XFS_BUF_GETERROR(bp));
894 *bpp = bp;
895 return 0;
896}
897
898#ifdef DEBUG
899
900
901
902STATIC int
903xfs_rtcheck_alloc_range(
904 xfs_mount_t *mp,
905 xfs_trans_t *tp,
906 xfs_rtblock_t bno,
907 xfs_extlen_t len,
908 int *stat)
909{
910 xfs_rtblock_t new;
911
912 return xfs_rtcheck_range(mp, tp, bno, len, 0, &new, stat);
913}
914#endif
915
916
917
918
919
920STATIC int
921xfs_rtcheck_range(
922 xfs_mount_t *mp,
923 xfs_trans_t *tp,
924 xfs_rtblock_t start,
925 xfs_extlen_t len,
926 int val,
927 xfs_rtblock_t *new,
928 int *stat)
929{
930 xfs_rtword_t *b;
931 int bit;
932 xfs_rtblock_t block;
933 xfs_buf_t *bp;
934 xfs_rtword_t *bufp;
935 int error;
936 xfs_rtblock_t i;
937 xfs_rtblock_t lastbit;
938 xfs_rtword_t mask;
939 xfs_rtword_t wdiff;
940 int word;
941
942
943
944
945 block = XFS_BITTOBLOCK(mp, start);
946
947
948
949 error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
950 if (error) {
951 return error;
952 }
953 bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
954
955
956
957 word = XFS_BITTOWORD(mp, start);
958 b = &bufp[word];
959 bit = (int)(start & (XFS_NBWORD - 1));
960
961
962
963 val = -val;
964
965
966
967
968 if (bit) {
969
970
971
972 lastbit = XFS_RTMIN(bit + len, XFS_NBWORD);
973
974
975
976 mask = (((xfs_rtword_t)1 << (lastbit - bit)) - 1) << bit;
977
978
979
980 if ((wdiff = (*b ^ val) & mask)) {
981
982
983
984 xfs_trans_brelse(tp, bp);
985 i = XFS_RTLOBIT(wdiff) - bit;
986 *new = start + i;
987 *stat = 0;
988 return 0;
989 }
990 i = lastbit - bit;
991
992
993
994
995 if (++word == XFS_BLOCKWSIZE(mp) && i < len) {
996
997
998
999 xfs_trans_brelse(tp, bp);
1000 error = xfs_rtbuf_get(mp, tp, ++block, 0, &bp);
1001 if (error) {
1002 return error;
1003 }
1004 b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1005 word = 0;
1006 } else {
1007
1008
1009
1010 b++;
1011 }
1012 } else {
1013
1014
1015
1016 i = 0;
1017 }
1018
1019
1020
1021
1022 while (len - i >= XFS_NBWORD) {
1023
1024
1025
1026 if ((wdiff = *b ^ val)) {
1027
1028
1029
1030 xfs_trans_brelse(tp, bp);
1031 i += XFS_RTLOBIT(wdiff);
1032 *new = start + i;
1033 *stat = 0;
1034 return 0;
1035 }
1036 i += XFS_NBWORD;
1037
1038
1039
1040
1041 if (++word == XFS_BLOCKWSIZE(mp) && i < len) {
1042
1043
1044
1045 xfs_trans_brelse(tp, bp);
1046 error = xfs_rtbuf_get(mp, tp, ++block, 0, &bp);
1047 if (error) {
1048 return error;
1049 }
1050 b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1051 word = 0;
1052 } else {
1053
1054
1055
1056 b++;
1057 }
1058 }
1059
1060
1061
1062
1063 if ((lastbit = len - i)) {
1064
1065
1066
1067 mask = ((xfs_rtword_t)1 << lastbit) - 1;
1068
1069
1070
1071 if ((wdiff = (*b ^ val) & mask)) {
1072
1073
1074
1075 xfs_trans_brelse(tp, bp);
1076 i += XFS_RTLOBIT(wdiff);
1077 *new = start + i;
1078 *stat = 0;
1079 return 0;
1080 } else
1081 i = len;
1082 }
1083
1084
1085
1086 xfs_trans_brelse(tp, bp);
1087 *new = start + i;
1088 *stat = 1;
1089 return 0;
1090}
1091
1092
1093
1094
1095
1096STATIC int
1097xfs_rtcopy_summary(
1098 xfs_mount_t *omp,
1099 xfs_mount_t *nmp,
1100 xfs_trans_t *tp)
1101{
1102 xfs_rtblock_t bbno;
1103 xfs_buf_t *bp;
1104 int error;
1105 int log;
1106 xfs_suminfo_t sum;
1107 xfs_fsblock_t sumbno;
1108
1109 bp = NULL;
1110 for (log = omp->m_rsumlevels - 1; log >= 0; log--) {
1111 for (bbno = omp->m_sb.sb_rbmblocks - 1;
1112 (xfs_srtblock_t)bbno >= 0;
1113 bbno--) {
1114 error = xfs_rtget_summary(omp, tp, log, bbno, &bp,
1115 &sumbno, &sum);
1116 if (error)
1117 return error;
1118 if (sum == 0)
1119 continue;
1120 error = xfs_rtmodify_summary(omp, tp, log, bbno, -sum,
1121 &bp, &sumbno);
1122 if (error)
1123 return error;
1124 error = xfs_rtmodify_summary(nmp, tp, log, bbno, sum,
1125 &bp, &sumbno);
1126 if (error)
1127 return error;
1128 ASSERT(sum > 0);
1129 }
1130 }
1131 return 0;
1132}
1133
1134
1135
1136
1137
1138STATIC int
1139xfs_rtfind_back(
1140 xfs_mount_t *mp,
1141 xfs_trans_t *tp,
1142 xfs_rtblock_t start,
1143 xfs_rtblock_t limit,
1144 xfs_rtblock_t *rtblock)
1145{
1146 xfs_rtword_t *b;
1147 int bit;
1148 xfs_rtblock_t block;
1149 xfs_buf_t *bp;
1150 xfs_rtword_t *bufp;
1151 int error;
1152 xfs_rtblock_t firstbit;
1153 xfs_rtblock_t i;
1154 xfs_rtblock_t len;
1155 xfs_rtword_t mask;
1156 xfs_rtword_t want;
1157 xfs_rtword_t wdiff;
1158 int word;
1159
1160
1161
1162
1163 block = XFS_BITTOBLOCK(mp, start);
1164 error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
1165 if (error) {
1166 return error;
1167 }
1168 bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1169
1170
1171
1172 word = XFS_BITTOWORD(mp, start);
1173 b = &bufp[word];
1174 bit = (int)(start & (XFS_NBWORD - 1));
1175 len = start - limit + 1;
1176
1177
1178
1179
1180 want = (*b & ((xfs_rtword_t)1 << bit)) ? -1 : 0;
1181
1182
1183
1184
1185 if (bit < XFS_NBWORD - 1) {
1186
1187
1188
1189
1190 firstbit = XFS_RTMAX((xfs_srtblock_t)(bit - len + 1), 0);
1191 mask = (((xfs_rtword_t)1 << (bit - firstbit + 1)) - 1) <<
1192 firstbit;
1193
1194
1195
1196
1197 if ((wdiff = (*b ^ want) & mask)) {
1198
1199
1200
1201 xfs_trans_brelse(tp, bp);
1202 i = bit - XFS_RTHIBIT(wdiff);
1203 *rtblock = start - i + 1;
1204 return 0;
1205 }
1206 i = bit - firstbit + 1;
1207
1208
1209
1210
1211 if (--word == -1 && i < len) {
1212
1213
1214
1215 xfs_trans_brelse(tp, bp);
1216 error = xfs_rtbuf_get(mp, tp, --block, 0, &bp);
1217 if (error) {
1218 return error;
1219 }
1220 bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1221 word = XFS_BLOCKWMASK(mp);
1222 b = &bufp[word];
1223 } else {
1224
1225
1226
1227 b--;
1228 }
1229 } else {
1230
1231
1232
1233 i = 0;
1234 }
1235
1236
1237
1238
1239 while (len - i >= XFS_NBWORD) {
1240
1241
1242
1243 if ((wdiff = *b ^ want)) {
1244
1245
1246
1247 xfs_trans_brelse(tp, bp);
1248 i += XFS_NBWORD - 1 - XFS_RTHIBIT(wdiff);
1249 *rtblock = start - i + 1;
1250 return 0;
1251 }
1252 i += XFS_NBWORD;
1253
1254
1255
1256
1257 if (--word == -1 && i < len) {
1258
1259
1260
1261 xfs_trans_brelse(tp, bp);
1262 error = xfs_rtbuf_get(mp, tp, --block, 0, &bp);
1263 if (error) {
1264 return error;
1265 }
1266 bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1267 word = XFS_BLOCKWMASK(mp);
1268 b = &bufp[word];
1269 } else {
1270
1271
1272
1273 b--;
1274 }
1275 }
1276
1277
1278
1279
1280 if (len - i) {
1281
1282
1283
1284
1285 firstbit = XFS_NBWORD - (len - i);
1286 mask = (((xfs_rtword_t)1 << (len - i)) - 1) << firstbit;
1287
1288
1289
1290 if ((wdiff = (*b ^ want) & mask)) {
1291
1292
1293
1294 xfs_trans_brelse(tp, bp);
1295 i += XFS_NBWORD - 1 - XFS_RTHIBIT(wdiff);
1296 *rtblock = start - i + 1;
1297 return 0;
1298 } else
1299 i = len;
1300 }
1301
1302
1303
1304 xfs_trans_brelse(tp, bp);
1305 *rtblock = start - i + 1;
1306 return 0;
1307}
1308
1309
1310
1311
1312
1313STATIC int
1314xfs_rtfind_forw(
1315 xfs_mount_t *mp,
1316 xfs_trans_t *tp,
1317 xfs_rtblock_t start,
1318 xfs_rtblock_t limit,
1319 xfs_rtblock_t *rtblock)
1320{
1321 xfs_rtword_t *b;
1322 int bit;
1323 xfs_rtblock_t block;
1324 xfs_buf_t *bp;
1325 xfs_rtword_t *bufp;
1326 int error;
1327 xfs_rtblock_t i;
1328 xfs_rtblock_t lastbit;
1329 xfs_rtblock_t len;
1330 xfs_rtword_t mask;
1331 xfs_rtword_t want;
1332 xfs_rtword_t wdiff;
1333 int word;
1334
1335
1336
1337
1338 block = XFS_BITTOBLOCK(mp, start);
1339 error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
1340 if (error) {
1341 return error;
1342 }
1343 bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1344
1345
1346
1347 word = XFS_BITTOWORD(mp, start);
1348 b = &bufp[word];
1349 bit = (int)(start & (XFS_NBWORD - 1));
1350 len = limit - start + 1;
1351
1352
1353
1354
1355 want = (*b & ((xfs_rtword_t)1 << bit)) ? -1 : 0;
1356
1357
1358
1359
1360 if (bit) {
1361
1362
1363
1364
1365 lastbit = XFS_RTMIN(bit + len, XFS_NBWORD);
1366 mask = (((xfs_rtword_t)1 << (lastbit - bit)) - 1) << bit;
1367
1368
1369
1370
1371 if ((wdiff = (*b ^ want) & mask)) {
1372
1373
1374
1375 xfs_trans_brelse(tp, bp);
1376 i = XFS_RTLOBIT(wdiff) - bit;
1377 *rtblock = start + i - 1;
1378 return 0;
1379 }
1380 i = lastbit - bit;
1381
1382
1383
1384
1385 if (++word == XFS_BLOCKWSIZE(mp) && i < len) {
1386
1387
1388
1389 xfs_trans_brelse(tp, bp);
1390 error = xfs_rtbuf_get(mp, tp, ++block, 0, &bp);
1391 if (error) {
1392 return error;
1393 }
1394 b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1395 word = 0;
1396 } else {
1397
1398
1399
1400 b++;
1401 }
1402 } else {
1403
1404
1405
1406 i = 0;
1407 }
1408
1409
1410
1411
1412 while (len - i >= XFS_NBWORD) {
1413
1414
1415
1416 if ((wdiff = *b ^ want)) {
1417
1418
1419
1420 xfs_trans_brelse(tp, bp);
1421 i += XFS_RTLOBIT(wdiff);
1422 *rtblock = start + i - 1;
1423 return 0;
1424 }
1425 i += XFS_NBWORD;
1426
1427
1428
1429
1430 if (++word == XFS_BLOCKWSIZE(mp) && i < len) {
1431
1432
1433
1434 xfs_trans_brelse(tp, bp);
1435 error = xfs_rtbuf_get(mp, tp, ++block, 0, &bp);
1436 if (error) {
1437 return error;
1438 }
1439 b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1440 word = 0;
1441 } else {
1442
1443
1444
1445 b++;
1446 }
1447 }
1448
1449
1450
1451
1452 if ((lastbit = len - i)) {
1453
1454
1455
1456 mask = ((xfs_rtword_t)1 << lastbit) - 1;
1457
1458
1459
1460 if ((wdiff = (*b ^ want) & mask)) {
1461
1462
1463
1464 xfs_trans_brelse(tp, bp);
1465 i += XFS_RTLOBIT(wdiff);
1466 *rtblock = start + i - 1;
1467 return 0;
1468 } else
1469 i = len;
1470 }
1471
1472
1473
1474 xfs_trans_brelse(tp, bp);
1475 *rtblock = start + i - 1;
1476 return 0;
1477}
1478
1479
1480
1481
1482
1483STATIC int
1484xfs_rtfree_range(
1485 xfs_mount_t *mp,
1486 xfs_trans_t *tp,
1487 xfs_rtblock_t start,
1488 xfs_extlen_t len,
1489 xfs_buf_t **rbpp,
1490 xfs_fsblock_t *rsb)
1491{
1492 xfs_rtblock_t end;
1493 int error;
1494 xfs_rtblock_t postblock;
1495 xfs_rtblock_t preblock;
1496
1497 end = start + len - 1;
1498
1499
1500
1501 error = xfs_rtmodify_range(mp, tp, start, len, 1);
1502 if (error) {
1503 return error;
1504 }
1505
1506
1507
1508
1509
1510 error = xfs_rtfind_back(mp, tp, start, 0, &preblock);
1511 if (error) {
1512 return error;
1513 }
1514
1515
1516
1517 error = xfs_rtfind_forw(mp, tp, end, mp->m_sb.sb_rextents - 1,
1518 &postblock);
1519
1520
1521
1522
1523 if (preblock < start) {
1524 error = xfs_rtmodify_summary(mp, tp,
1525 XFS_RTBLOCKLOG(start - preblock),
1526 XFS_BITTOBLOCK(mp, preblock), -1, rbpp, rsb);
1527 if (error) {
1528 return error;
1529 }
1530 }
1531
1532
1533
1534
1535 if (postblock > end) {
1536 error = xfs_rtmodify_summary(mp, tp,
1537 XFS_RTBLOCKLOG(postblock - end),
1538 XFS_BITTOBLOCK(mp, end + 1), -1, rbpp, rsb);
1539 if (error) {
1540 return error;
1541 }
1542 }
1543
1544
1545
1546
1547 error = xfs_rtmodify_summary(mp, tp,
1548 XFS_RTBLOCKLOG(postblock + 1 - preblock),
1549 XFS_BITTOBLOCK(mp, preblock), 1, rbpp, rsb);
1550 return error;
1551}
1552
1553
1554
1555
1556
1557
1558
1559STATIC int
1560xfs_rtget_summary(
1561 xfs_mount_t *mp,
1562 xfs_trans_t *tp,
1563 int log,
1564 xfs_rtblock_t bbno,
1565 xfs_buf_t **rbpp,
1566 xfs_fsblock_t *rsb,
1567 xfs_suminfo_t *sum)
1568{
1569 xfs_buf_t *bp;
1570 int error;
1571 xfs_fsblock_t sb;
1572 int so;
1573 xfs_suminfo_t *sp;
1574
1575
1576
1577
1578 so = XFS_SUMOFFS(mp, log, bbno);
1579
1580
1581
1582 sb = XFS_SUMOFFSTOBLOCK(mp, so);
1583
1584
1585
1586 if (rbpp && *rbpp && *rsb == sb)
1587 bp = *rbpp;
1588
1589
1590
1591 else {
1592
1593
1594
1595 if (rbpp && *rbpp)
1596 xfs_trans_brelse(tp, *rbpp);
1597 error = xfs_rtbuf_get(mp, tp, sb, 1, &bp);
1598 if (error) {
1599 return error;
1600 }
1601
1602
1603
1604 if (rbpp) {
1605 *rbpp = bp;
1606 *rsb = sb;
1607 }
1608 }
1609
1610
1611
1612 sp = XFS_SUMPTR(mp, bp, so);
1613 *sum = *sp;
1614
1615
1616
1617 if (!rbpp)
1618 xfs_trans_brelse(tp, bp);
1619 return 0;
1620}
1621
1622
1623
1624
1625
1626STATIC int
1627xfs_rtmodify_range(
1628 xfs_mount_t *mp,
1629 xfs_trans_t *tp,
1630 xfs_rtblock_t start,
1631 xfs_extlen_t len,
1632 int val)
1633{
1634 xfs_rtword_t *b;
1635 int bit;
1636 xfs_rtblock_t block;
1637 xfs_buf_t *bp;
1638 xfs_rtword_t *bufp;
1639 int error;
1640 xfs_rtword_t *first;
1641 int i;
1642 int lastbit;
1643 xfs_rtword_t mask;
1644 int word;
1645
1646
1647
1648
1649 block = XFS_BITTOBLOCK(mp, start);
1650
1651
1652
1653 error = xfs_rtbuf_get(mp, tp, block, 0, &bp);
1654 if (error) {
1655 return error;
1656 }
1657 bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1658
1659
1660
1661 word = XFS_BITTOWORD(mp, start);
1662 first = b = &bufp[word];
1663 bit = (int)(start & (XFS_NBWORD - 1));
1664
1665
1666
1667 val = -val;
1668
1669
1670
1671
1672 if (bit) {
1673
1674
1675
1676 lastbit = XFS_RTMIN(bit + len, XFS_NBWORD);
1677 mask = (((xfs_rtword_t)1 << (lastbit - bit)) - 1) << bit;
1678
1679
1680
1681 if (val)
1682 *b |= mask;
1683 else
1684 *b &= ~mask;
1685 i = lastbit - bit;
1686
1687
1688
1689
1690 if (++word == XFS_BLOCKWSIZE(mp) && i < len) {
1691
1692
1693
1694
1695 xfs_trans_log_buf(tp, bp,
1696 (uint)((char *)first - (char *)bufp),
1697 (uint)((char *)b - (char *)bufp));
1698 error = xfs_rtbuf_get(mp, tp, ++block, 0, &bp);
1699 if (error) {
1700 return error;
1701 }
1702 first = b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1703 word = 0;
1704 } else {
1705
1706
1707
1708 b++;
1709 }
1710 } else {
1711
1712
1713
1714 i = 0;
1715 }
1716
1717
1718
1719
1720 while (len - i >= XFS_NBWORD) {
1721
1722
1723
1724 *b = val;
1725 i += XFS_NBWORD;
1726
1727
1728
1729
1730 if (++word == XFS_BLOCKWSIZE(mp) && i < len) {
1731
1732
1733
1734
1735 xfs_trans_log_buf(tp, bp,
1736 (uint)((char *)first - (char *)bufp),
1737 (uint)((char *)b - (char *)bufp));
1738 error = xfs_rtbuf_get(mp, tp, ++block, 0, &bp);
1739 if (error) {
1740 return error;
1741 }
1742 first = b = bufp = (xfs_rtword_t *)XFS_BUF_PTR(bp);
1743 word = 0;
1744 } else {
1745
1746
1747
1748 b++;
1749 }
1750 }
1751
1752
1753
1754
1755 if ((lastbit = len - i)) {
1756
1757
1758
1759 bit = 0;
1760 mask = ((xfs_rtword_t)1 << lastbit) - 1;
1761
1762
1763
1764 if (val)
1765 *b |= mask;
1766 else
1767 *b &= ~mask;
1768 b++;
1769 }
1770
1771
1772
1773 if (b > first)
1774 xfs_trans_log_buf(tp, bp, (uint)((char *)first - (char *)bufp),
1775 (uint)((char *)b - (char *)bufp - 1));
1776 return 0;
1777}
1778
1779
1780
1781
1782
1783
1784
1785STATIC int
1786xfs_rtmodify_summary(
1787 xfs_mount_t *mp,
1788 xfs_trans_t *tp,
1789 int log,
1790 xfs_rtblock_t bbno,
1791 int delta,
1792 xfs_buf_t **rbpp,
1793 xfs_fsblock_t *rsb)
1794{
1795 xfs_buf_t *bp;
1796 int error;
1797 xfs_fsblock_t sb;
1798 int so;
1799 xfs_suminfo_t *sp;
1800
1801
1802
1803
1804 so = XFS_SUMOFFS(mp, log, bbno);
1805
1806
1807
1808 sb = XFS_SUMOFFSTOBLOCK(mp, so);
1809
1810
1811
1812 if (rbpp && *rbpp && *rsb == sb)
1813 bp = *rbpp;
1814
1815
1816
1817 else {
1818
1819
1820
1821 if (rbpp && *rbpp)
1822 xfs_trans_brelse(tp, *rbpp);
1823 error = xfs_rtbuf_get(mp, tp, sb, 1, &bp);
1824 if (error) {
1825 return error;
1826 }
1827
1828
1829
1830 if (rbpp) {
1831 *rbpp = bp;
1832 *rsb = sb;
1833 }
1834 }
1835
1836
1837
1838 sp = XFS_SUMPTR(mp, bp, so);
1839 *sp += delta;
1840 xfs_trans_log_buf(tp, bp, (uint)((char *)sp - (char *)XFS_BUF_PTR(bp)),
1841 (uint)((char *)sp - (char *)XFS_BUF_PTR(bp) + sizeof(*sp) - 1));
1842 return 0;
1843}
1844
1845
1846
1847
1848
1849
1850
1851
1852int
1853xfs_growfs_rt(
1854 xfs_mount_t *mp,
1855 xfs_growfs_rt_t *in)
1856{
1857 xfs_rtblock_t bmbno;
1858 xfs_buf_t *bp;
1859 int error;
1860 xfs_inode_t *ip;
1861 xfs_mount_t *nmp;
1862 xfs_drfsbno_t nrblocks;
1863 xfs_extlen_t nrbmblocks;
1864 xfs_drtbno_t nrextents;
1865 uint8_t nrextslog;
1866 xfs_extlen_t nrsumblocks;
1867 uint nrsumlevels;
1868 uint nrsumsize;
1869 xfs_sb_t *nsbp;
1870 xfs_extlen_t rbmblocks;
1871 xfs_extlen_t rsumblocks;
1872 xfs_sb_t *sbp;
1873 xfs_fsblock_t sumbno;
1874
1875 sbp = &mp->m_sb;
1876
1877
1878
1879 if (!capable(CAP_SYS_ADMIN))
1880 return XFS_ERROR(EPERM);
1881 if (mp->m_rtdev_targp == NULL || mp->m_rbmip == NULL ||
1882 (nrblocks = in->newblocks) <= sbp->sb_rblocks ||
1883 (sbp->sb_rblocks && (in->extsize != sbp->sb_rextsize)))
1884 return XFS_ERROR(EINVAL);
1885 if ((error = xfs_sb_validate_fsb_count(sbp, nrblocks)))
1886 return error;
1887
1888
1889
1890 error = xfs_read_buf(mp, mp->m_rtdev_targp,
1891 XFS_FSB_TO_BB(mp, nrblocks - 1),
1892 XFS_FSB_TO_BB(mp, 1), 0, &bp);
1893 if (error)
1894 return error;
1895 ASSERT(bp);
1896 xfs_buf_relse(bp);
1897
1898
1899
1900 nrextents = nrblocks;
1901 do_div(nrextents, in->extsize);
1902 nrbmblocks = howmany_64(nrextents, NBBY * sbp->sb_blocksize);
1903 nrextslog = xfs_highbit32(nrextents);
1904 nrsumlevels = nrextslog + 1;
1905 nrsumsize = (uint)sizeof(xfs_suminfo_t) * nrsumlevels * nrbmblocks;
1906 nrsumblocks = XFS_B_TO_FSB(mp, nrsumsize);
1907 nrsumsize = XFS_FSB_TO_B(mp, nrsumblocks);
1908
1909
1910
1911
1912
1913 if (nrsumblocks > (mp->m_sb.sb_logblocks >> 1))
1914 return XFS_ERROR(EINVAL);
1915
1916
1917
1918
1919 rbmblocks = XFS_B_TO_FSB(mp, mp->m_rbmip->i_d.di_size);
1920 rsumblocks = XFS_B_TO_FSB(mp, mp->m_rsumip->i_d.di_size);
1921
1922
1923
1924 if ((error = xfs_growfs_rt_alloc(mp, rbmblocks, nrbmblocks,
1925 mp->m_sb.sb_rbmino)))
1926 return error;
1927 if ((error = xfs_growfs_rt_alloc(mp, rsumblocks, nrsumblocks,
1928 mp->m_sb.sb_rsumino)))
1929 return error;
1930
1931
1932
1933 nmp = kmem_alloc(sizeof(*nmp), KM_SLEEP);
1934
1935
1936
1937
1938
1939
1940 for (bmbno = sbp->sb_rbmblocks -
1941 ((sbp->sb_rextents & ((1 << mp->m_blkbit_log) - 1)) != 0);
1942 bmbno < nrbmblocks;
1943 bmbno++) {
1944 xfs_trans_t *tp;
1945 int cancelflags = 0;
1946
1947 *nmp = *mp;
1948 nsbp = &nmp->m_sb;
1949
1950
1951
1952 nsbp->sb_rextsize = in->extsize;
1953 nsbp->sb_rbmblocks = bmbno + 1;
1954 nsbp->sb_rblocks =
1955 XFS_RTMIN(nrblocks,
1956 nsbp->sb_rbmblocks * NBBY *
1957 nsbp->sb_blocksize * nsbp->sb_rextsize);
1958 nsbp->sb_rextents = nsbp->sb_rblocks;
1959 do_div(nsbp->sb_rextents, nsbp->sb_rextsize);
1960 ASSERT(nsbp->sb_rextents != 0);
1961 nsbp->sb_rextslog = xfs_highbit32(nsbp->sb_rextents);
1962 nrsumlevels = nmp->m_rsumlevels = nsbp->sb_rextslog + 1;
1963 nrsumsize =
1964 (uint)sizeof(xfs_suminfo_t) * nrsumlevels *
1965 nsbp->sb_rbmblocks;
1966 nrsumblocks = XFS_B_TO_FSB(mp, nrsumsize);
1967 nmp->m_rsumsize = nrsumsize = XFS_FSB_TO_B(mp, nrsumblocks);
1968
1969
1970
1971 tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFSRT_FREE);
1972 if ((error = xfs_trans_reserve(tp, 0,
1973 XFS_GROWRTFREE_LOG_RES(nmp), 0, 0, 0)))
1974 goto error_cancel;
1975
1976
1977
1978 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
1979 XFS_ILOCK_EXCL, &ip)))
1980 goto error_cancel;
1981 ASSERT(ip == mp->m_rbmip);
1982
1983
1984
1985 mp->m_rbmip->i_d.di_size =
1986 nsbp->sb_rbmblocks * nsbp->sb_blocksize;
1987 xfs_trans_log_inode(tp, mp->m_rbmip, XFS_ILOG_CORE);
1988 cancelflags |= XFS_TRANS_ABORT;
1989
1990
1991
1992 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rsumino, 0,
1993 XFS_ILOCK_EXCL, &ip)))
1994 goto error_cancel;
1995 ASSERT(ip == mp->m_rsumip);
1996
1997
1998
1999 mp->m_rsumip->i_d.di_size = nmp->m_rsumsize;
2000 xfs_trans_log_inode(tp, mp->m_rsumip, XFS_ILOG_CORE);
2001
2002
2003
2004
2005 if (sbp->sb_rbmblocks != nsbp->sb_rbmblocks ||
2006 mp->m_rsumlevels != nmp->m_rsumlevels) {
2007 error = xfs_rtcopy_summary(mp, nmp, tp);
2008 if (error)
2009 goto error_cancel;
2010 }
2011
2012
2013
2014 if (nsbp->sb_rextsize != sbp->sb_rextsize)
2015 xfs_trans_mod_sb(tp, XFS_TRANS_SB_REXTSIZE,
2016 nsbp->sb_rextsize - sbp->sb_rextsize);
2017 if (nsbp->sb_rbmblocks != sbp->sb_rbmblocks)
2018 xfs_trans_mod_sb(tp, XFS_TRANS_SB_RBMBLOCKS,
2019 nsbp->sb_rbmblocks - sbp->sb_rbmblocks);
2020 if (nsbp->sb_rblocks != sbp->sb_rblocks)
2021 xfs_trans_mod_sb(tp, XFS_TRANS_SB_RBLOCKS,
2022 nsbp->sb_rblocks - sbp->sb_rblocks);
2023 if (nsbp->sb_rextents != sbp->sb_rextents)
2024 xfs_trans_mod_sb(tp, XFS_TRANS_SB_REXTENTS,
2025 nsbp->sb_rextents - sbp->sb_rextents);
2026 if (nsbp->sb_rextslog != sbp->sb_rextslog)
2027 xfs_trans_mod_sb(tp, XFS_TRANS_SB_REXTSLOG,
2028 nsbp->sb_rextslog - sbp->sb_rextslog);
2029
2030
2031
2032 bp = NULL;
2033 error = xfs_rtfree_range(nmp, tp, sbp->sb_rextents,
2034 nsbp->sb_rextents - sbp->sb_rextents, &bp, &sumbno);
2035 if (error) {
2036error_cancel:
2037 xfs_trans_cancel(tp, cancelflags);
2038 break;
2039 }
2040
2041
2042
2043 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FREXTENTS,
2044 nsbp->sb_rextents - sbp->sb_rextents);
2045
2046
2047
2048 mp->m_rsumlevels = nrsumlevels;
2049 mp->m_rsumsize = nrsumsize;
2050
2051 error = xfs_trans_commit(tp, 0);
2052 if (error)
2053 break;
2054 }
2055
2056
2057
2058
2059 kmem_free(nmp);
2060
2061 return error;
2062}
2063
2064
2065
2066
2067
2068
2069int
2070xfs_rtallocate_extent(
2071 xfs_trans_t *tp,
2072 xfs_rtblock_t bno,
2073 xfs_extlen_t minlen,
2074 xfs_extlen_t maxlen,
2075 xfs_extlen_t *len,
2076 xfs_alloctype_t type,
2077 int wasdel,
2078 xfs_extlen_t prod,
2079 xfs_rtblock_t *rtblock)
2080{
2081 int error;
2082 xfs_inode_t *ip;
2083 xfs_mount_t *mp;
2084 xfs_rtblock_t r;
2085 xfs_fsblock_t sb;
2086 xfs_buf_t *sumbp;
2087
2088 ASSERT(minlen > 0 && minlen <= maxlen);
2089 mp = tp->t_mountp;
2090
2091
2092
2093 if (prod > 1) {
2094 xfs_extlen_t i;
2095
2096 if ((i = maxlen % prod))
2097 maxlen -= i;
2098 if ((i = minlen % prod))
2099 minlen += prod - i;
2100 if (maxlen < minlen) {
2101 *rtblock = NULLRTBLOCK;
2102 return 0;
2103 }
2104 }
2105
2106
2107
2108 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
2109 XFS_ILOCK_EXCL, &ip)))
2110 return error;
2111 sumbp = NULL;
2112
2113
2114
2115 switch (type) {
2116 case XFS_ALLOCTYPE_ANY_AG:
2117 error = xfs_rtallocate_extent_size(mp, tp, minlen, maxlen, len,
2118 &sumbp, &sb, prod, &r);
2119 break;
2120 case XFS_ALLOCTYPE_NEAR_BNO:
2121 error = xfs_rtallocate_extent_near(mp, tp, bno, minlen, maxlen,
2122 len, &sumbp, &sb, prod, &r);
2123 break;
2124 case XFS_ALLOCTYPE_THIS_BNO:
2125 error = xfs_rtallocate_extent_exact(mp, tp, bno, minlen, maxlen,
2126 len, &sumbp, &sb, prod, &r);
2127 break;
2128 default:
2129 ASSERT(0);
2130 }
2131 if (error) {
2132 return error;
2133 }
2134
2135
2136
2137 if (r != NULLRTBLOCK) {
2138 long slen = (long)*len;
2139
2140 ASSERT(*len >= minlen && *len <= maxlen);
2141 if (wasdel)
2142 xfs_trans_mod_sb(tp, XFS_TRANS_SB_RES_FREXTENTS, -slen);
2143 else
2144 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FREXTENTS, -slen);
2145 }
2146 *rtblock = r;
2147 return 0;
2148}
2149
2150
2151
2152
2153
2154int
2155xfs_rtfree_extent(
2156 xfs_trans_t *tp,
2157 xfs_rtblock_t bno,
2158 xfs_extlen_t len)
2159{
2160 int error;
2161 xfs_inode_t *ip;
2162 xfs_mount_t *mp;
2163 xfs_fsblock_t sb;
2164 xfs_buf_t *sumbp;
2165
2166 mp = tp->t_mountp;
2167
2168
2169
2170 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
2171 XFS_ILOCK_EXCL, &ip)))
2172 return error;
2173#if defined(__KERNEL__) && defined(DEBUG)
2174
2175
2176
2177 {
2178 int stat;
2179
2180 error = xfs_rtcheck_alloc_range(mp, tp, bno, len, &stat);
2181 if (error) {
2182 return error;
2183 }
2184 ASSERT(stat);
2185 }
2186#endif
2187 sumbp = NULL;
2188
2189
2190
2191 error = xfs_rtfree_range(mp, tp, bno, len, &sumbp, &sb);
2192 if (error) {
2193 return error;
2194 }
2195
2196
2197
2198 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FREXTENTS, (long)len);
2199
2200
2201
2202
2203 if (tp->t_frextents_delta + mp->m_sb.sb_frextents ==
2204 mp->m_sb.sb_rextents) {
2205 if (!(ip->i_d.di_flags & XFS_DIFLAG_NEWRTBM))
2206 ip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
2207 *(__uint64_t *)&ip->i_d.di_atime = 0;
2208 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
2209 }
2210 return 0;
2211}
2212
2213
2214
2215
2216int
2217xfs_rtmount_init(
2218 xfs_mount_t *mp)
2219{
2220 xfs_buf_t *bp;
2221 xfs_daddr_t d;
2222 int error;
2223 xfs_sb_t *sbp;
2224
2225 sbp = &mp->m_sb;
2226 if (sbp->sb_rblocks == 0)
2227 return 0;
2228 if (mp->m_rtdev_targp == NULL) {
2229 cmn_err(CE_WARN,
2230 "XFS: This filesystem has a realtime volume, use rtdev=device option");
2231 return XFS_ERROR(ENODEV);
2232 }
2233 mp->m_rsumlevels = sbp->sb_rextslog + 1;
2234 mp->m_rsumsize =
2235 (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels *
2236 sbp->sb_rbmblocks;
2237 mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize);
2238 mp->m_rbmip = mp->m_rsumip = NULL;
2239
2240
2241
2242 d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks);
2243 if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) {
2244 cmn_err(CE_WARN, "XFS: realtime mount -- %llu != %llu",
2245 (unsigned long long) XFS_BB_TO_FSB(mp, d),
2246 (unsigned long long) mp->m_sb.sb_rblocks);
2247 return XFS_ERROR(E2BIG);
2248 }
2249 error = xfs_read_buf(mp, mp->m_rtdev_targp,
2250 d - XFS_FSB_TO_BB(mp, 1),
2251 XFS_FSB_TO_BB(mp, 1), 0, &bp);
2252 if (error) {
2253 cmn_err(CE_WARN,
2254 "XFS: realtime mount -- xfs_read_buf failed, returned %d", error);
2255 if (error == ENOSPC)
2256 return XFS_ERROR(E2BIG);
2257 return error;
2258 }
2259 xfs_buf_relse(bp);
2260 return 0;
2261}
2262
2263
2264
2265
2266
2267int
2268xfs_rtmount_inodes(
2269 xfs_mount_t *mp)
2270{
2271 int error;
2272 xfs_sb_t *sbp;
2273
2274 sbp = &mp->m_sb;
2275 if (sbp->sb_rbmino == NULLFSINO)
2276 return 0;
2277 error = xfs_iget(mp, NULL, sbp->sb_rbmino, 0, 0, &mp->m_rbmip, 0);
2278 if (error)
2279 return error;
2280 ASSERT(mp->m_rbmip != NULL);
2281 ASSERT(sbp->sb_rsumino != NULLFSINO);
2282 error = xfs_iget(mp, NULL, sbp->sb_rsumino, 0, 0, &mp->m_rsumip, 0);
2283 if (error) {
2284 IRELE(mp->m_rbmip);
2285 return error;
2286 }
2287 ASSERT(mp->m_rsumip != NULL);
2288 return 0;
2289}
2290
2291void
2292xfs_rtunmount_inodes(
2293 struct xfs_mount *mp)
2294{
2295 if (mp->m_rbmip)
2296 IRELE(mp->m_rbmip);
2297 if (mp->m_rsumip)
2298 IRELE(mp->m_rsumip);
2299}
2300
2301
2302
2303
2304
2305
2306
2307
2308int
2309xfs_rtpick_extent(
2310 xfs_mount_t *mp,
2311 xfs_trans_t *tp,
2312 xfs_extlen_t len,
2313 xfs_rtblock_t *pick)
2314{
2315 xfs_rtblock_t b;
2316 int error;
2317 xfs_inode_t *ip;
2318 int log2;
2319 __uint64_t resid;
2320 __uint64_t seq;
2321 __uint64_t *seqp;
2322
2323 if ((error = xfs_trans_iget(mp, tp, mp->m_sb.sb_rbmino, 0,
2324 XFS_ILOCK_EXCL, &ip)))
2325 return error;
2326 ASSERT(ip == mp->m_rbmip);
2327 seqp = (__uint64_t *)&ip->i_d.di_atime;
2328 if (!(ip->i_d.di_flags & XFS_DIFLAG_NEWRTBM)) {
2329 ip->i_d.di_flags |= XFS_DIFLAG_NEWRTBM;
2330 *seqp = 0;
2331 }
2332 seq = *seqp;
2333 if ((log2 = xfs_highbit64(seq)) == -1)
2334 b = 0;
2335 else {
2336 resid = seq - (1ULL << log2);
2337 b = (mp->m_sb.sb_rextents * ((resid << 1) + 1ULL)) >>
2338 (log2 + 1);
2339 if (b >= mp->m_sb.sb_rextents)
2340 b = do_mod(b, mp->m_sb.sb_rextents);
2341 if (b + len > mp->m_sb.sb_rextents)
2342 b = mp->m_sb.sb_rextents - len;
2343 }
2344 *seqp = seq + 1;
2345 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
2346 *pick = b;
2347 return 0;
2348}
2349