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6
7#include "xfs.h"
8#include "xfs_shared.h"
9#include "xfs_format.h"
10#include "xfs_log_format.h"
11#include "xfs_trans_resv.h"
12#include "xfs_sb.h"
13#include "xfs_mount.h"
14#include "xfs_inode.h"
15#include "xfs_btree.h"
16#include "xfs_bmap.h"
17#include "xfs_alloc.h"
18#include "xfs_fsops.h"
19#include "xfs_trans.h"
20#include "xfs_buf_item.h"
21#include "xfs_log.h"
22#include "xfs_log_priv.h"
23#include "xfs_dir2.h"
24#include "xfs_extfree_item.h"
25#include "xfs_mru_cache.h"
26#include "xfs_inode_item.h"
27#include "xfs_icache.h"
28#include "xfs_trace.h"
29#include "xfs_icreate_item.h"
30#include "xfs_filestream.h"
31#include "xfs_quota.h"
32#include "xfs_sysfs.h"
33#include "xfs_ondisk.h"
34#include "xfs_rmap_item.h"
35#include "xfs_refcount_item.h"
36#include "xfs_bmap_item.h"
37#include "xfs_reflink.h"
38
39#include <linux/magic.h>
40#include <linux/parser.h>
41
42static const struct super_operations xfs_super_operations;
43struct bio_set xfs_ioend_bioset;
44
45static struct kset *xfs_kset;
46#ifdef DEBUG
47static struct xfs_kobj xfs_dbg_kobj;
48#endif
49
50
51
52
53enum {
54 Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev, Opt_biosize,
55 Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid,
56 Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups,
57 Opt_allocsize, Opt_norecovery, Opt_inode64, Opt_inode32, Opt_ikeep,
58 Opt_noikeep, Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2,
59 Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota,
60 Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota,
61 Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce,
62 Opt_discard, Opt_nodiscard, Opt_dax, Opt_err,
63};
64
65static const match_table_t tokens = {
66 {Opt_logbufs, "logbufs=%u"},
67 {Opt_logbsize, "logbsize=%s"},
68 {Opt_logdev, "logdev=%s"},
69 {Opt_rtdev, "rtdev=%s"},
70 {Opt_biosize, "biosize=%u"},
71 {Opt_wsync, "wsync"},
72 {Opt_noalign, "noalign"},
73 {Opt_swalloc, "swalloc"},
74 {Opt_sunit, "sunit=%u"},
75 {Opt_swidth, "swidth=%u"},
76 {Opt_nouuid, "nouuid"},
77 {Opt_grpid, "grpid"},
78 {Opt_nogrpid, "nogrpid"},
79 {Opt_bsdgroups, "bsdgroups"},
80 {Opt_sysvgroups,"sysvgroups"},
81 {Opt_allocsize, "allocsize=%s"},
82 {Opt_norecovery,"norecovery"},
83 {Opt_inode64, "inode64"},
84 {Opt_inode32, "inode32"},
85
86 {Opt_ikeep, "ikeep"},
87 {Opt_noikeep, "noikeep"},
88 {Opt_largeio, "largeio"},
89 {Opt_nolargeio, "nolargeio"},
90
91 {Opt_attr2, "attr2"},
92 {Opt_noattr2, "noattr2"},
93 {Opt_filestreams,"filestreams"},
94 {Opt_quota, "quota"},
95 {Opt_noquota, "noquota"},
96 {Opt_usrquota, "usrquota"},
97 {Opt_grpquota, "grpquota"},
98 {Opt_prjquota, "prjquota"},
99 {Opt_uquota, "uquota"},
100 {Opt_gquota, "gquota"},
101 {Opt_pquota, "pquota"},
102 {Opt_uqnoenforce,"uqnoenforce"},
103 {Opt_gqnoenforce,"gqnoenforce"},
104 {Opt_pqnoenforce,"pqnoenforce"},
105 {Opt_qnoenforce, "qnoenforce"},
106 {Opt_discard, "discard"},
107 {Opt_nodiscard, "nodiscard"},
108 {Opt_dax, "dax"},
109 {Opt_err, NULL},
110};
111
112
113STATIC int
114suffix_kstrtoint(const substring_t *s, unsigned int base, int *res)
115{
116 int last, shift_left_factor = 0, _res;
117 char *value;
118 int ret = 0;
119
120 value = match_strdup(s);
121 if (!value)
122 return -ENOMEM;
123
124 last = strlen(value) - 1;
125 if (value[last] == 'K' || value[last] == 'k') {
126 shift_left_factor = 10;
127 value[last] = '\0';
128 }
129 if (value[last] == 'M' || value[last] == 'm') {
130 shift_left_factor = 20;
131 value[last] = '\0';
132 }
133 if (value[last] == 'G' || value[last] == 'g') {
134 shift_left_factor = 30;
135 value[last] = '\0';
136 }
137
138 if (kstrtoint(value, base, &_res))
139 ret = -EINVAL;
140 kfree(value);
141 *res = _res << shift_left_factor;
142 return ret;
143}
144
145
146
147
148
149
150
151
152
153
154
155
156STATIC int
157xfs_parseargs(
158 struct xfs_mount *mp,
159 char *options)
160{
161 const struct super_block *sb = mp->m_super;
162 char *p;
163 substring_t args[MAX_OPT_ARGS];
164 int dsunit = 0;
165 int dswidth = 0;
166 int iosize = 0;
167 uint8_t iosizelog = 0;
168
169
170
171
172
173 mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
174 if (!mp->m_fsname)
175 return -ENOMEM;
176 mp->m_fsname_len = strlen(mp->m_fsname) + 1;
177
178
179
180
181 if (sb_rdonly(sb))
182 mp->m_flags |= XFS_MOUNT_RDONLY;
183 if (sb->s_flags & SB_DIRSYNC)
184 mp->m_flags |= XFS_MOUNT_DIRSYNC;
185 if (sb->s_flags & SB_SYNCHRONOUS)
186 mp->m_flags |= XFS_MOUNT_WSYNC;
187
188
189
190
191
192 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
193
194
195
196
197 mp->m_logbufs = -1;
198 mp->m_logbsize = -1;
199
200 if (!options)
201 goto done;
202
203 while ((p = strsep(&options, ",")) != NULL) {
204 int token;
205
206 if (!*p)
207 continue;
208
209 token = match_token(p, tokens, args);
210 switch (token) {
211 case Opt_logbufs:
212 if (match_int(args, &mp->m_logbufs))
213 return -EINVAL;
214 break;
215 case Opt_logbsize:
216 if (suffix_kstrtoint(args, 10, &mp->m_logbsize))
217 return -EINVAL;
218 break;
219 case Opt_logdev:
220 kfree(mp->m_logname);
221 mp->m_logname = match_strdup(args);
222 if (!mp->m_logname)
223 return -ENOMEM;
224 break;
225 case Opt_rtdev:
226 kfree(mp->m_rtname);
227 mp->m_rtname = match_strdup(args);
228 if (!mp->m_rtname)
229 return -ENOMEM;
230 break;
231 case Opt_allocsize:
232 case Opt_biosize:
233 if (suffix_kstrtoint(args, 10, &iosize))
234 return -EINVAL;
235 iosizelog = ffs(iosize) - 1;
236 break;
237 case Opt_grpid:
238 case Opt_bsdgroups:
239 mp->m_flags |= XFS_MOUNT_GRPID;
240 break;
241 case Opt_nogrpid:
242 case Opt_sysvgroups:
243 mp->m_flags &= ~XFS_MOUNT_GRPID;
244 break;
245 case Opt_wsync:
246 mp->m_flags |= XFS_MOUNT_WSYNC;
247 break;
248 case Opt_norecovery:
249 mp->m_flags |= XFS_MOUNT_NORECOVERY;
250 break;
251 case Opt_noalign:
252 mp->m_flags |= XFS_MOUNT_NOALIGN;
253 break;
254 case Opt_swalloc:
255 mp->m_flags |= XFS_MOUNT_SWALLOC;
256 break;
257 case Opt_sunit:
258 if (match_int(args, &dsunit))
259 return -EINVAL;
260 break;
261 case Opt_swidth:
262 if (match_int(args, &dswidth))
263 return -EINVAL;
264 break;
265 case Opt_inode32:
266 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
267 break;
268 case Opt_inode64:
269 mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
270 break;
271 case Opt_nouuid:
272 mp->m_flags |= XFS_MOUNT_NOUUID;
273 break;
274 case Opt_ikeep:
275 mp->m_flags |= XFS_MOUNT_IKEEP;
276 break;
277 case Opt_noikeep:
278 mp->m_flags &= ~XFS_MOUNT_IKEEP;
279 break;
280 case Opt_largeio:
281 mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
282 break;
283 case Opt_nolargeio:
284 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
285 break;
286 case Opt_attr2:
287 mp->m_flags |= XFS_MOUNT_ATTR2;
288 break;
289 case Opt_noattr2:
290 mp->m_flags &= ~XFS_MOUNT_ATTR2;
291 mp->m_flags |= XFS_MOUNT_NOATTR2;
292 break;
293 case Opt_filestreams:
294 mp->m_flags |= XFS_MOUNT_FILESTREAMS;
295 break;
296 case Opt_noquota:
297 mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
298 mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
299 mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
300 break;
301 case Opt_quota:
302 case Opt_uquota:
303 case Opt_usrquota:
304 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
305 XFS_UQUOTA_ENFD);
306 break;
307 case Opt_qnoenforce:
308 case Opt_uqnoenforce:
309 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
310 mp->m_qflags &= ~XFS_UQUOTA_ENFD;
311 break;
312 case Opt_pquota:
313 case Opt_prjquota:
314 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
315 XFS_PQUOTA_ENFD);
316 break;
317 case Opt_pqnoenforce:
318 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
319 mp->m_qflags &= ~XFS_PQUOTA_ENFD;
320 break;
321 case Opt_gquota:
322 case Opt_grpquota:
323 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
324 XFS_GQUOTA_ENFD);
325 break;
326 case Opt_gqnoenforce:
327 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
328 mp->m_qflags &= ~XFS_GQUOTA_ENFD;
329 break;
330 case Opt_discard:
331 mp->m_flags |= XFS_MOUNT_DISCARD;
332 break;
333 case Opt_nodiscard:
334 mp->m_flags &= ~XFS_MOUNT_DISCARD;
335 break;
336#ifdef CONFIG_FS_DAX
337 case Opt_dax:
338 mp->m_flags |= XFS_MOUNT_DAX;
339 break;
340#endif
341 default:
342 xfs_warn(mp, "unknown mount option [%s].", p);
343 return -EINVAL;
344 }
345 }
346
347
348
349
350 if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
351 !(mp->m_flags & XFS_MOUNT_RDONLY)) {
352 xfs_warn(mp, "no-recovery mounts must be read-only.");
353 return -EINVAL;
354 }
355
356 if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) {
357 xfs_warn(mp,
358 "sunit and swidth options incompatible with the noalign option");
359 return -EINVAL;
360 }
361
362#ifndef CONFIG_XFS_QUOTA
363 if (XFS_IS_QUOTA_RUNNING(mp)) {
364 xfs_warn(mp, "quota support not available in this kernel.");
365 return -EINVAL;
366 }
367#endif
368
369 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
370 xfs_warn(mp, "sunit and swidth must be specified together");
371 return -EINVAL;
372 }
373
374 if (dsunit && (dswidth % dsunit != 0)) {
375 xfs_warn(mp,
376 "stripe width (%d) must be a multiple of the stripe unit (%d)",
377 dswidth, dsunit);
378 return -EINVAL;
379 }
380
381done:
382 if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) {
383
384
385
386
387
388
389 mp->m_dalign = dsunit;
390 mp->m_swidth = dswidth;
391 }
392
393 if (mp->m_logbufs != -1 &&
394 mp->m_logbufs != 0 &&
395 (mp->m_logbufs < XLOG_MIN_ICLOGS ||
396 mp->m_logbufs > XLOG_MAX_ICLOGS)) {
397 xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
398 mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
399 return -EINVAL;
400 }
401 if (mp->m_logbsize != -1 &&
402 mp->m_logbsize != 0 &&
403 (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
404 mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
405 !is_power_of_2(mp->m_logbsize))) {
406 xfs_warn(mp,
407 "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
408 mp->m_logbsize);
409 return -EINVAL;
410 }
411
412 if (iosizelog) {
413 if (iosizelog > XFS_MAX_IO_LOG ||
414 iosizelog < XFS_MIN_IO_LOG) {
415 xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
416 iosizelog, XFS_MIN_IO_LOG,
417 XFS_MAX_IO_LOG);
418 return -EINVAL;
419 }
420
421 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
422 mp->m_readio_log = iosizelog;
423 mp->m_writeio_log = iosizelog;
424 }
425
426 return 0;
427}
428
429struct proc_xfs_info {
430 uint64_t flag;
431 char *str;
432};
433
434STATIC void
435xfs_showargs(
436 struct xfs_mount *mp,
437 struct seq_file *m)
438{
439 static struct proc_xfs_info xfs_info_set[] = {
440
441 { XFS_MOUNT_IKEEP, ",ikeep" },
442 { XFS_MOUNT_WSYNC, ",wsync" },
443 { XFS_MOUNT_NOALIGN, ",noalign" },
444 { XFS_MOUNT_SWALLOC, ",swalloc" },
445 { XFS_MOUNT_NOUUID, ",nouuid" },
446 { XFS_MOUNT_NORECOVERY, ",norecovery" },
447 { XFS_MOUNT_ATTR2, ",attr2" },
448 { XFS_MOUNT_FILESTREAMS, ",filestreams" },
449 { XFS_MOUNT_GRPID, ",grpid" },
450 { XFS_MOUNT_DISCARD, ",discard" },
451 { XFS_MOUNT_SMALL_INUMS, ",inode32" },
452 { XFS_MOUNT_DAX, ",dax" },
453 { 0, NULL }
454 };
455 static struct proc_xfs_info xfs_info_unset[] = {
456
457 { XFS_MOUNT_COMPAT_IOSIZE, ",largeio" },
458 { XFS_MOUNT_SMALL_INUMS, ",inode64" },
459 { 0, NULL }
460 };
461 struct proc_xfs_info *xfs_infop;
462
463 for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) {
464 if (mp->m_flags & xfs_infop->flag)
465 seq_puts(m, xfs_infop->str);
466 }
467 for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) {
468 if (!(mp->m_flags & xfs_infop->flag))
469 seq_puts(m, xfs_infop->str);
470 }
471
472 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
473 seq_printf(m, ",allocsize=%dk",
474 (int)(1 << mp->m_writeio_log) >> 10);
475
476 if (mp->m_logbufs > 0)
477 seq_printf(m, ",logbufs=%d", mp->m_logbufs);
478 if (mp->m_logbsize > 0)
479 seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10);
480
481 if (mp->m_logname)
482 seq_show_option(m, "logdev", mp->m_logname);
483 if (mp->m_rtname)
484 seq_show_option(m, "rtdev", mp->m_rtname);
485
486 if (mp->m_dalign > 0)
487 seq_printf(m, ",sunit=%d",
488 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
489 if (mp->m_swidth > 0)
490 seq_printf(m, ",swidth=%d",
491 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
492
493 if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD))
494 seq_puts(m, ",usrquota");
495 else if (mp->m_qflags & XFS_UQUOTA_ACCT)
496 seq_puts(m, ",uqnoenforce");
497
498 if (mp->m_qflags & XFS_PQUOTA_ACCT) {
499 if (mp->m_qflags & XFS_PQUOTA_ENFD)
500 seq_puts(m, ",prjquota");
501 else
502 seq_puts(m, ",pqnoenforce");
503 }
504 if (mp->m_qflags & XFS_GQUOTA_ACCT) {
505 if (mp->m_qflags & XFS_GQUOTA_ENFD)
506 seq_puts(m, ",grpquota");
507 else
508 seq_puts(m, ",gqnoenforce");
509 }
510
511 if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
512 seq_puts(m, ",noquota");
513}
514
515static uint64_t
516xfs_max_file_offset(
517 unsigned int blockshift)
518{
519 unsigned int pagefactor = 1;
520 unsigned int bitshift = BITS_PER_LONG - 1;
521
522
523
524
525
526
527
528
529
530
531
532#if BITS_PER_LONG == 32
533 ASSERT(sizeof(sector_t) == 8);
534 pagefactor = PAGE_SIZE;
535 bitshift = BITS_PER_LONG;
536#endif
537
538 return (((uint64_t)pagefactor) << bitshift) - 1;
539}
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556xfs_agnumber_t
557xfs_set_inode_alloc(
558 struct xfs_mount *mp,
559 xfs_agnumber_t agcount)
560{
561 xfs_agnumber_t index;
562 xfs_agnumber_t maxagi = 0;
563 xfs_sb_t *sbp = &mp->m_sb;
564 xfs_agnumber_t max_metadata;
565 xfs_agino_t agino;
566 xfs_ino_t ino;
567
568
569
570
571
572 if (M_IGEO(mp)->maxicount) {
573 uint64_t icount;
574
575 icount = sbp->sb_dblocks * sbp->sb_imax_pct;
576 do_div(icount, 100);
577 icount += sbp->sb_agblocks - 1;
578 do_div(icount, sbp->sb_agblocks);
579 max_metadata = icount;
580 } else {
581 max_metadata = agcount;
582 }
583
584
585 agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1);
586 ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino);
587
588
589
590
591
592
593 if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32)
594 mp->m_flags |= XFS_MOUNT_32BITINODES;
595 else
596 mp->m_flags &= ~XFS_MOUNT_32BITINODES;
597
598 for (index = 0; index < agcount; index++) {
599 struct xfs_perag *pag;
600
601 ino = XFS_AGINO_TO_INO(mp, index, agino);
602
603 pag = xfs_perag_get(mp, index);
604
605 if (mp->m_flags & XFS_MOUNT_32BITINODES) {
606 if (ino > XFS_MAXINUMBER_32) {
607 pag->pagi_inodeok = 0;
608 pag->pagf_metadata = 0;
609 } else {
610 pag->pagi_inodeok = 1;
611 maxagi++;
612 if (index < max_metadata)
613 pag->pagf_metadata = 1;
614 else
615 pag->pagf_metadata = 0;
616 }
617 } else {
618 pag->pagi_inodeok = 1;
619 pag->pagf_metadata = 0;
620 }
621
622 xfs_perag_put(pag);
623 }
624
625 return (mp->m_flags & XFS_MOUNT_32BITINODES) ? maxagi : agcount;
626}
627
628STATIC int
629xfs_blkdev_get(
630 xfs_mount_t *mp,
631 const char *name,
632 struct block_device **bdevp)
633{
634 int error = 0;
635
636 *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
637 mp);
638 if (IS_ERR(*bdevp)) {
639 error = PTR_ERR(*bdevp);
640 xfs_warn(mp, "Invalid device [%s], error=%d", name, error);
641 }
642
643 return error;
644}
645
646STATIC void
647xfs_blkdev_put(
648 struct block_device *bdev)
649{
650 if (bdev)
651 blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
652}
653
654void
655xfs_blkdev_issue_flush(
656 xfs_buftarg_t *buftarg)
657{
658 blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL);
659}
660
661STATIC void
662xfs_close_devices(
663 struct xfs_mount *mp)
664{
665 struct dax_device *dax_ddev = mp->m_ddev_targp->bt_daxdev;
666
667 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
668 struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
669 struct dax_device *dax_logdev = mp->m_logdev_targp->bt_daxdev;
670
671 xfs_free_buftarg(mp->m_logdev_targp);
672 xfs_blkdev_put(logdev);
673 fs_put_dax(dax_logdev);
674 }
675 if (mp->m_rtdev_targp) {
676 struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
677 struct dax_device *dax_rtdev = mp->m_rtdev_targp->bt_daxdev;
678
679 xfs_free_buftarg(mp->m_rtdev_targp);
680 xfs_blkdev_put(rtdev);
681 fs_put_dax(dax_rtdev);
682 }
683 xfs_free_buftarg(mp->m_ddev_targp);
684 fs_put_dax(dax_ddev);
685}
686
687
688
689
690
691
692
693
694
695
696
697STATIC int
698xfs_open_devices(
699 struct xfs_mount *mp)
700{
701 struct block_device *ddev = mp->m_super->s_bdev;
702 struct dax_device *dax_ddev = fs_dax_get_by_bdev(ddev);
703 struct dax_device *dax_logdev = NULL, *dax_rtdev = NULL;
704 struct block_device *logdev = NULL, *rtdev = NULL;
705 int error;
706
707
708
709
710 if (mp->m_logname) {
711 error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
712 if (error)
713 goto out;
714 dax_logdev = fs_dax_get_by_bdev(logdev);
715 }
716
717 if (mp->m_rtname) {
718 error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
719 if (error)
720 goto out_close_logdev;
721
722 if (rtdev == ddev || rtdev == logdev) {
723 xfs_warn(mp,
724 "Cannot mount filesystem with identical rtdev and ddev/logdev.");
725 error = -EINVAL;
726 goto out_close_rtdev;
727 }
728 dax_rtdev = fs_dax_get_by_bdev(rtdev);
729 }
730
731
732
733
734 error = -ENOMEM;
735 mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, dax_ddev);
736 if (!mp->m_ddev_targp)
737 goto out_close_rtdev;
738
739 if (rtdev) {
740 mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, dax_rtdev);
741 if (!mp->m_rtdev_targp)
742 goto out_free_ddev_targ;
743 }
744
745 if (logdev && logdev != ddev) {
746 mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, dax_logdev);
747 if (!mp->m_logdev_targp)
748 goto out_free_rtdev_targ;
749 } else {
750 mp->m_logdev_targp = mp->m_ddev_targp;
751 }
752
753 return 0;
754
755 out_free_rtdev_targ:
756 if (mp->m_rtdev_targp)
757 xfs_free_buftarg(mp->m_rtdev_targp);
758 out_free_ddev_targ:
759 xfs_free_buftarg(mp->m_ddev_targp);
760 out_close_rtdev:
761 xfs_blkdev_put(rtdev);
762 fs_put_dax(dax_rtdev);
763 out_close_logdev:
764 if (logdev && logdev != ddev) {
765 xfs_blkdev_put(logdev);
766 fs_put_dax(dax_logdev);
767 }
768 out:
769 fs_put_dax(dax_ddev);
770 return error;
771}
772
773
774
775
776STATIC int
777xfs_setup_devices(
778 struct xfs_mount *mp)
779{
780 int error;
781
782 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize);
783 if (error)
784 return error;
785
786 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
787 unsigned int log_sector_size = BBSIZE;
788
789 if (xfs_sb_version_hassector(&mp->m_sb))
790 log_sector_size = mp->m_sb.sb_logsectsize;
791 error = xfs_setsize_buftarg(mp->m_logdev_targp,
792 log_sector_size);
793 if (error)
794 return error;
795 }
796 if (mp->m_rtdev_targp) {
797 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
798 mp->m_sb.sb_sectsize);
799 if (error)
800 return error;
801 }
802
803 return 0;
804}
805
806STATIC int
807xfs_init_mount_workqueues(
808 struct xfs_mount *mp)
809{
810 mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s",
811 WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_fsname);
812 if (!mp->m_buf_workqueue)
813 goto out;
814
815 mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
816 WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
817 if (!mp->m_unwritten_workqueue)
818 goto out_destroy_buf;
819
820 mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s",
821 WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
822 if (!mp->m_cil_workqueue)
823 goto out_destroy_unwritten;
824
825 mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
826 WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
827 if (!mp->m_reclaim_workqueue)
828 goto out_destroy_cil;
829
830 mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
831 WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
832 if (!mp->m_eofblocks_workqueue)
833 goto out_destroy_reclaim;
834
835 mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", WQ_FREEZABLE, 0,
836 mp->m_fsname);
837 if (!mp->m_sync_workqueue)
838 goto out_destroy_eofb;
839
840 return 0;
841
842out_destroy_eofb:
843 destroy_workqueue(mp->m_eofblocks_workqueue);
844out_destroy_reclaim:
845 destroy_workqueue(mp->m_reclaim_workqueue);
846out_destroy_cil:
847 destroy_workqueue(mp->m_cil_workqueue);
848out_destroy_unwritten:
849 destroy_workqueue(mp->m_unwritten_workqueue);
850out_destroy_buf:
851 destroy_workqueue(mp->m_buf_workqueue);
852out:
853 return -ENOMEM;
854}
855
856STATIC void
857xfs_destroy_mount_workqueues(
858 struct xfs_mount *mp)
859{
860 destroy_workqueue(mp->m_sync_workqueue);
861 destroy_workqueue(mp->m_eofblocks_workqueue);
862 destroy_workqueue(mp->m_reclaim_workqueue);
863 destroy_workqueue(mp->m_cil_workqueue);
864 destroy_workqueue(mp->m_unwritten_workqueue);
865 destroy_workqueue(mp->m_buf_workqueue);
866}
867
868
869
870
871
872
873
874void
875xfs_flush_inodes(
876 struct xfs_mount *mp)
877{
878 struct super_block *sb = mp->m_super;
879
880 if (down_read_trylock(&sb->s_umount)) {
881 sync_inodes_sb(sb);
882 up_read(&sb->s_umount);
883 }
884}
885
886
887STATIC struct inode *
888xfs_fs_alloc_inode(
889 struct super_block *sb)
890{
891 BUG();
892 return NULL;
893}
894
895#ifdef DEBUG
896static void
897xfs_check_delalloc(
898 struct xfs_inode *ip,
899 int whichfork)
900{
901 struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork);
902 struct xfs_bmbt_irec got;
903 struct xfs_iext_cursor icur;
904
905 if (!ifp || !xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got))
906 return;
907 do {
908 if (isnullstartblock(got.br_startblock)) {
909 xfs_warn(ip->i_mount,
910 "ino %llx %s fork has delalloc extent at [0x%llx:0x%llx]",
911 ip->i_ino,
912 whichfork == XFS_DATA_FORK ? "data" : "cow",
913 got.br_startoff, got.br_blockcount);
914 }
915 } while (xfs_iext_next_extent(ifp, &icur, &got));
916}
917#else
918#define xfs_check_delalloc(ip, whichfork) do { } while (0)
919#endif
920
921
922
923
924
925STATIC void
926xfs_fs_destroy_inode(
927 struct inode *inode)
928{
929 struct xfs_inode *ip = XFS_I(inode);
930
931 trace_xfs_destroy_inode(ip);
932
933 ASSERT(!rwsem_is_locked(&inode->i_rwsem));
934 XFS_STATS_INC(ip->i_mount, vn_rele);
935 XFS_STATS_INC(ip->i_mount, vn_remove);
936
937 xfs_inactive(ip);
938
939 if (!XFS_FORCED_SHUTDOWN(ip->i_mount) && ip->i_delayed_blks) {
940 xfs_check_delalloc(ip, XFS_DATA_FORK);
941 xfs_check_delalloc(ip, XFS_COW_FORK);
942 ASSERT(0);
943 }
944
945 XFS_STATS_INC(ip->i_mount, vn_reclaim);
946
947
948
949
950 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE));
951 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM));
952
953
954
955
956
957
958
959
960 xfs_inode_set_reclaim_tag(ip);
961}
962
963static void
964xfs_fs_dirty_inode(
965 struct inode *inode,
966 int flag)
967{
968 struct xfs_inode *ip = XFS_I(inode);
969 struct xfs_mount *mp = ip->i_mount;
970 struct xfs_trans *tp;
971
972 if (!(inode->i_sb->s_flags & SB_LAZYTIME))
973 return;
974 if (flag != I_DIRTY_SYNC || !(inode->i_state & I_DIRTY_TIME))
975 return;
976
977 if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp))
978 return;
979 xfs_ilock(ip, XFS_ILOCK_EXCL);
980 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
981 xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
982 xfs_trans_commit(tp);
983}
984
985
986
987
988
989
990
991
992
993STATIC void
994xfs_fs_inode_init_once(
995 void *inode)
996{
997 struct xfs_inode *ip = inode;
998
999 memset(ip, 0, sizeof(struct xfs_inode));
1000
1001
1002 inode_init_once(VFS_I(ip));
1003
1004
1005 atomic_set(&ip->i_pincount, 0);
1006 spin_lock_init(&ip->i_flags_lock);
1007
1008 mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
1009 "xfsino", ip->i_ino);
1010 mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
1011 "xfsino", ip->i_ino);
1012}
1013
1014
1015
1016
1017
1018
1019
1020
1021STATIC int
1022xfs_fs_drop_inode(
1023 struct inode *inode)
1024{
1025 struct xfs_inode *ip = XFS_I(inode);
1026
1027
1028
1029
1030
1031
1032 if (ip->i_flags & XFS_IRECOVERY) {
1033 ASSERT(ip->i_mount->m_log->l_flags & XLOG_RECOVERY_NEEDED);
1034 return 0;
1035 }
1036
1037 return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE);
1038}
1039
1040STATIC void
1041xfs_free_fsname(
1042 struct xfs_mount *mp)
1043{
1044 kfree(mp->m_fsname);
1045 kfree(mp->m_rtname);
1046 kfree(mp->m_logname);
1047}
1048
1049STATIC int
1050xfs_fs_sync_fs(
1051 struct super_block *sb,
1052 int wait)
1053{
1054 struct xfs_mount *mp = XFS_M(sb);
1055
1056
1057
1058
1059 if (!wait)
1060 return 0;
1061
1062 xfs_log_force(mp, XFS_LOG_SYNC);
1063 if (laptop_mode) {
1064
1065
1066
1067
1068
1069 flush_delayed_work(&mp->m_log->l_work);
1070 }
1071
1072 return 0;
1073}
1074
1075STATIC int
1076xfs_fs_statfs(
1077 struct dentry *dentry,
1078 struct kstatfs *statp)
1079{
1080 struct xfs_mount *mp = XFS_M(dentry->d_sb);
1081 xfs_sb_t *sbp = &mp->m_sb;
1082 struct xfs_inode *ip = XFS_I(d_inode(dentry));
1083 uint64_t fakeinos, id;
1084 uint64_t icount;
1085 uint64_t ifree;
1086 uint64_t fdblocks;
1087 xfs_extlen_t lsize;
1088 int64_t ffree;
1089
1090 statp->f_type = XFS_SUPER_MAGIC;
1091 statp->f_namelen = MAXNAMELEN - 1;
1092
1093 id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
1094 statp->f_fsid.val[0] = (u32)id;
1095 statp->f_fsid.val[1] = (u32)(id >> 32);
1096
1097 icount = percpu_counter_sum(&mp->m_icount);
1098 ifree = percpu_counter_sum(&mp->m_ifree);
1099 fdblocks = percpu_counter_sum(&mp->m_fdblocks);
1100
1101 spin_lock(&mp->m_sb_lock);
1102 statp->f_bsize = sbp->sb_blocksize;
1103 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
1104 statp->f_blocks = sbp->sb_dblocks - lsize;
1105 spin_unlock(&mp->m_sb_lock);
1106
1107 statp->f_bfree = fdblocks - mp->m_alloc_set_aside;
1108 statp->f_bavail = statp->f_bfree;
1109
1110 fakeinos = XFS_FSB_TO_INO(mp, statp->f_bfree);
1111 statp->f_files = min(icount + fakeinos, (uint64_t)XFS_MAXINUMBER);
1112 if (M_IGEO(mp)->maxicount)
1113 statp->f_files = min_t(typeof(statp->f_files),
1114 statp->f_files,
1115 M_IGEO(mp)->maxicount);
1116
1117
1118 statp->f_files = max_t(typeof(statp->f_files),
1119 statp->f_files,
1120 sbp->sb_icount);
1121
1122
1123 ffree = statp->f_files - (icount - ifree);
1124 statp->f_ffree = max_t(int64_t, ffree, 0);
1125
1126
1127 if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
1128 ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) ==
1129 (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))
1130 xfs_qm_statvfs(ip, statp);
1131
1132 if (XFS_IS_REALTIME_MOUNT(mp) &&
1133 (ip->i_d.di_flags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME))) {
1134 statp->f_blocks = sbp->sb_rblocks;
1135 statp->f_bavail = statp->f_bfree =
1136 sbp->sb_frextents * sbp->sb_rextsize;
1137 }
1138
1139 return 0;
1140}
1141
1142STATIC void
1143xfs_save_resvblks(struct xfs_mount *mp)
1144{
1145 uint64_t resblks = 0;
1146
1147 mp->m_resblks_save = mp->m_resblks;
1148 xfs_reserve_blocks(mp, &resblks, NULL);
1149}
1150
1151STATIC void
1152xfs_restore_resvblks(struct xfs_mount *mp)
1153{
1154 uint64_t resblks;
1155
1156 if (mp->m_resblks_save) {
1157 resblks = mp->m_resblks_save;
1158 mp->m_resblks_save = 0;
1159 } else
1160 resblks = xfs_default_resblks(mp);
1161
1162 xfs_reserve_blocks(mp, &resblks, NULL);
1163}
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176void
1177xfs_quiesce_attr(
1178 struct xfs_mount *mp)
1179{
1180 int error = 0;
1181
1182
1183 while (atomic_read(&mp->m_active_trans) > 0)
1184 delay(100);
1185
1186
1187 xfs_log_force(mp, XFS_LOG_SYNC);
1188
1189
1190 xfs_reclaim_inodes(mp, 0);
1191 xfs_reclaim_inodes(mp, SYNC_WAIT);
1192
1193
1194 error = xfs_log_sbcount(mp);
1195 if (error)
1196 xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
1197 "Frozen image may not be consistent.");
1198
1199
1200
1201
1202 WARN_ON(atomic_read(&mp->m_active_trans) != 0);
1203
1204 xfs_log_quiesce(mp);
1205}
1206
1207STATIC int
1208xfs_test_remount_options(
1209 struct super_block *sb,
1210 char *options)
1211{
1212 int error = 0;
1213 struct xfs_mount *tmp_mp;
1214
1215 tmp_mp = kmem_zalloc(sizeof(*tmp_mp), KM_MAYFAIL);
1216 if (!tmp_mp)
1217 return -ENOMEM;
1218
1219 tmp_mp->m_super = sb;
1220 error = xfs_parseargs(tmp_mp, options);
1221 xfs_free_fsname(tmp_mp);
1222 kmem_free(tmp_mp);
1223
1224 return error;
1225}
1226
1227STATIC int
1228xfs_fs_remount(
1229 struct super_block *sb,
1230 int *flags,
1231 char *options)
1232{
1233 struct xfs_mount *mp = XFS_M(sb);
1234 xfs_sb_t *sbp = &mp->m_sb;
1235 substring_t args[MAX_OPT_ARGS];
1236 char *p;
1237 int error;
1238
1239
1240 error = xfs_test_remount_options(sb, options);
1241 if (error)
1242 return error;
1243
1244 sync_filesystem(sb);
1245 while ((p = strsep(&options, ",")) != NULL) {
1246 int token;
1247
1248 if (!*p)
1249 continue;
1250
1251 token = match_token(p, tokens, args);
1252 switch (token) {
1253 case Opt_inode64:
1254 mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
1255 mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount);
1256 break;
1257 case Opt_inode32:
1258 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
1259 mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount);
1260 break;
1261 default:
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278#if 0
1279 xfs_info(mp,
1280 "mount option \"%s\" not supported for remount", p);
1281 return -EINVAL;
1282#else
1283 break;
1284#endif
1285 }
1286 }
1287
1288
1289 if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & SB_RDONLY)) {
1290 if (mp->m_flags & XFS_MOUNT_NORECOVERY) {
1291 xfs_warn(mp,
1292 "ro->rw transition prohibited on norecovery mount");
1293 return -EINVAL;
1294 }
1295
1296 if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
1297 xfs_sb_has_ro_compat_feature(sbp,
1298 XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) {
1299 xfs_warn(mp,
1300"ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem",
1301 (sbp->sb_features_ro_compat &
1302 XFS_SB_FEAT_RO_COMPAT_UNKNOWN));
1303 return -EINVAL;
1304 }
1305
1306 mp->m_flags &= ~XFS_MOUNT_RDONLY;
1307
1308
1309
1310
1311
1312 if (mp->m_update_sb) {
1313 error = xfs_sync_sb(mp, false);
1314 if (error) {
1315 xfs_warn(mp, "failed to write sb changes");
1316 return error;
1317 }
1318 mp->m_update_sb = false;
1319 }
1320
1321
1322
1323
1324
1325 xfs_restore_resvblks(mp);
1326 xfs_log_work_queue(mp);
1327
1328
1329 error = xfs_reflink_recover_cow(mp);
1330 if (error) {
1331 xfs_err(mp,
1332 "Error %d recovering leftover CoW allocations.", error);
1333 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
1334 return error;
1335 }
1336 xfs_start_block_reaping(mp);
1337
1338
1339 error = xfs_fs_reserve_ag_blocks(mp);
1340 if (error && error != -ENOSPC)
1341 return error;
1342 }
1343
1344
1345 if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & SB_RDONLY)) {
1346
1347
1348
1349
1350 xfs_stop_block_reaping(mp);
1351
1352
1353 error = xfs_icache_free_cowblocks(mp, NULL);
1354 if (error) {
1355 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
1356 return error;
1357 }
1358
1359
1360 error = xfs_fs_unreserve_ag_blocks(mp);
1361 if (error) {
1362 xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
1363 return error;
1364 }
1365
1366
1367
1368
1369
1370
1371
1372
1373 xfs_save_resvblks(mp);
1374
1375 xfs_quiesce_attr(mp);
1376 mp->m_flags |= XFS_MOUNT_RDONLY;
1377 }
1378
1379 return 0;
1380}
1381
1382
1383
1384
1385
1386
1387
1388STATIC int
1389xfs_fs_freeze(
1390 struct super_block *sb)
1391{
1392 struct xfs_mount *mp = XFS_M(sb);
1393
1394 xfs_stop_block_reaping(mp);
1395 xfs_save_resvblks(mp);
1396 xfs_quiesce_attr(mp);
1397 return xfs_sync_sb(mp, true);
1398}
1399
1400STATIC int
1401xfs_fs_unfreeze(
1402 struct super_block *sb)
1403{
1404 struct xfs_mount *mp = XFS_M(sb);
1405
1406 xfs_restore_resvblks(mp);
1407 xfs_log_work_queue(mp);
1408 xfs_start_block_reaping(mp);
1409 return 0;
1410}
1411
1412STATIC int
1413xfs_fs_show_options(
1414 struct seq_file *m,
1415 struct dentry *root)
1416{
1417 xfs_showargs(XFS_M(root->d_sb), m);
1418 return 0;
1419}
1420
1421
1422
1423
1424
1425STATIC int
1426xfs_finish_flags(
1427 struct xfs_mount *mp)
1428{
1429 int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
1430
1431
1432 if (xfs_sb_version_haslogv2(&mp->m_sb)) {
1433 if (mp->m_logbsize <= 0 &&
1434 mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
1435 mp->m_logbsize = mp->m_sb.sb_logsunit;
1436 } else if (mp->m_logbsize > 0 &&
1437 mp->m_logbsize < mp->m_sb.sb_logsunit) {
1438 xfs_warn(mp,
1439 "logbuf size must be greater than or equal to log stripe size");
1440 return -EINVAL;
1441 }
1442 } else {
1443
1444 if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
1445 xfs_warn(mp,
1446 "logbuf size for version 1 logs must be 16K or 32K");
1447 return -EINVAL;
1448 }
1449 }
1450
1451
1452
1453
1454 if (xfs_sb_version_hascrc(&mp->m_sb) &&
1455 (mp->m_flags & XFS_MOUNT_NOATTR2)) {
1456 xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. "
1457 "attr2 is always enabled for V5 filesystems.");
1458 return -EINVAL;
1459 }
1460
1461
1462
1463
1464
1465 if (xfs_sb_version_hasattr2(&mp->m_sb) &&
1466 !(mp->m_flags & XFS_MOUNT_NOATTR2))
1467 mp->m_flags |= XFS_MOUNT_ATTR2;
1468
1469
1470
1471
1472 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
1473 xfs_warn(mp,
1474 "cannot mount a read-only filesystem as read-write");
1475 return -EROFS;
1476 }
1477
1478 if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
1479 (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) &&
1480 !xfs_sb_version_has_pquotino(&mp->m_sb)) {
1481 xfs_warn(mp,
1482 "Super block does not support project and group quota together");
1483 return -EINVAL;
1484 }
1485
1486 return 0;
1487}
1488
1489static int
1490xfs_init_percpu_counters(
1491 struct xfs_mount *mp)
1492{
1493 int error;
1494
1495 error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL);
1496 if (error)
1497 return -ENOMEM;
1498
1499 error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL);
1500 if (error)
1501 goto free_icount;
1502
1503 error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL);
1504 if (error)
1505 goto free_ifree;
1506
1507 error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL);
1508 if (error)
1509 goto free_fdblocks;
1510
1511 return 0;
1512
1513free_fdblocks:
1514 percpu_counter_destroy(&mp->m_fdblocks);
1515free_ifree:
1516 percpu_counter_destroy(&mp->m_ifree);
1517free_icount:
1518 percpu_counter_destroy(&mp->m_icount);
1519 return -ENOMEM;
1520}
1521
1522void
1523xfs_reinit_percpu_counters(
1524 struct xfs_mount *mp)
1525{
1526 percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount);
1527 percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree);
1528 percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks);
1529}
1530
1531static void
1532xfs_destroy_percpu_counters(
1533 struct xfs_mount *mp)
1534{
1535 percpu_counter_destroy(&mp->m_icount);
1536 percpu_counter_destroy(&mp->m_ifree);
1537 percpu_counter_destroy(&mp->m_fdblocks);
1538 ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
1539 percpu_counter_sum(&mp->m_delalloc_blks) == 0);
1540 percpu_counter_destroy(&mp->m_delalloc_blks);
1541}
1542
1543static struct xfs_mount *
1544xfs_mount_alloc(
1545 struct super_block *sb)
1546{
1547 struct xfs_mount *mp;
1548
1549 mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL);
1550 if (!mp)
1551 return NULL;
1552
1553 mp->m_super = sb;
1554 spin_lock_init(&mp->m_sb_lock);
1555 spin_lock_init(&mp->m_agirotor_lock);
1556 INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC);
1557 spin_lock_init(&mp->m_perag_lock);
1558 mutex_init(&mp->m_growlock);
1559 atomic_set(&mp->m_active_trans, 0);
1560 INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
1561 INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker);
1562 INIT_DELAYED_WORK(&mp->m_cowblocks_work, xfs_cowblocks_worker);
1563 mp->m_kobj.kobject.kset = xfs_kset;
1564
1565
1566
1567
1568
1569
1570 mp->m_finobt_nores = true;
1571 return mp;
1572}
1573
1574
1575STATIC int
1576xfs_fs_fill_super(
1577 struct super_block *sb,
1578 void *data,
1579 int silent)
1580{
1581 struct inode *root;
1582 struct xfs_mount *mp = NULL;
1583 int flags = 0, error = -ENOMEM;
1584
1585
1586
1587
1588
1589 mp = xfs_mount_alloc(sb);
1590 if (!mp)
1591 goto out;
1592 sb->s_fs_info = mp;
1593
1594 error = xfs_parseargs(mp, (char *)data);
1595 if (error)
1596 goto out_free_fsname;
1597
1598 sb_min_blocksize(sb, BBSIZE);
1599 sb->s_xattr = xfs_xattr_handlers;
1600 sb->s_export_op = &xfs_export_operations;
1601#ifdef CONFIG_XFS_QUOTA
1602 sb->s_qcop = &xfs_quotactl_operations;
1603 sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ;
1604#endif
1605 sb->s_op = &xfs_super_operations;
1606
1607
1608
1609
1610
1611
1612 if (xfs_globals.mount_delay) {
1613 xfs_notice(mp, "Delaying mount for %d seconds.",
1614 xfs_globals.mount_delay);
1615 msleep(xfs_globals.mount_delay * 1000);
1616 }
1617
1618 if (silent)
1619 flags |= XFS_MFSI_QUIET;
1620
1621 error = xfs_open_devices(mp);
1622 if (error)
1623 goto out_free_fsname;
1624
1625 error = xfs_init_mount_workqueues(mp);
1626 if (error)
1627 goto out_close_devices;
1628
1629 error = xfs_init_percpu_counters(mp);
1630 if (error)
1631 goto out_destroy_workqueues;
1632
1633
1634 mp->m_stats.xs_stats = alloc_percpu(struct xfsstats);
1635 if (!mp->m_stats.xs_stats) {
1636 error = -ENOMEM;
1637 goto out_destroy_counters;
1638 }
1639
1640 error = xfs_readsb(mp, flags);
1641 if (error)
1642 goto out_free_stats;
1643
1644 error = xfs_finish_flags(mp);
1645 if (error)
1646 goto out_free_sb;
1647
1648 error = xfs_setup_devices(mp);
1649 if (error)
1650 goto out_free_sb;
1651
1652 error = xfs_filestream_mount(mp);
1653 if (error)
1654 goto out_free_sb;
1655
1656
1657
1658
1659
1660 sb->s_magic = XFS_SUPER_MAGIC;
1661 sb->s_blocksize = mp->m_sb.sb_blocksize;
1662 sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
1663 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
1664 sb->s_max_links = XFS_MAXLINK;
1665 sb->s_time_gran = 1;
1666 sb->s_iflags |= SB_I_CGROUPWB;
1667
1668 set_posix_acl_flag(sb);
1669
1670
1671 if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
1672 sb->s_flags |= SB_I_VERSION;
1673
1674 if (mp->m_flags & XFS_MOUNT_DAX) {
1675 bool rtdev_is_dax = false, datadev_is_dax;
1676
1677 xfs_warn(mp,
1678 "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
1679
1680 datadev_is_dax = bdev_dax_supported(mp->m_ddev_targp->bt_bdev,
1681 sb->s_blocksize);
1682 if (mp->m_rtdev_targp)
1683 rtdev_is_dax = bdev_dax_supported(
1684 mp->m_rtdev_targp->bt_bdev, sb->s_blocksize);
1685 if (!rtdev_is_dax && !datadev_is_dax) {
1686 xfs_alert(mp,
1687 "DAX unsupported by block device. Turning off DAX.");
1688 mp->m_flags &= ~XFS_MOUNT_DAX;
1689 }
1690 if (xfs_sb_version_hasreflink(&mp->m_sb)) {
1691 xfs_alert(mp,
1692 "DAX and reflink cannot be used together!");
1693 error = -EINVAL;
1694 goto out_filestream_unmount;
1695 }
1696 }
1697
1698 if (mp->m_flags & XFS_MOUNT_DISCARD) {
1699 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1700
1701 if (!blk_queue_discard(q)) {
1702 xfs_warn(mp, "mounting with \"discard\" option, but "
1703 "the device does not support discard");
1704 mp->m_flags &= ~XFS_MOUNT_DISCARD;
1705 }
1706 }
1707
1708 if (xfs_sb_version_hasreflink(&mp->m_sb)) {
1709 if (mp->m_sb.sb_rblocks) {
1710 xfs_alert(mp,
1711 "reflink not compatible with realtime device!");
1712 error = -EINVAL;
1713 goto out_filestream_unmount;
1714 }
1715
1716 if (xfs_globals.always_cow) {
1717 xfs_info(mp, "using DEBUG-only always_cow mode.");
1718 mp->m_always_cow = true;
1719 }
1720 }
1721
1722 if (xfs_sb_version_hasrmapbt(&mp->m_sb) && mp->m_sb.sb_rblocks) {
1723 xfs_alert(mp,
1724 "reverse mapping btree not compatible with realtime device!");
1725 error = -EINVAL;
1726 goto out_filestream_unmount;
1727 }
1728
1729 error = xfs_mountfs(mp);
1730 if (error)
1731 goto out_filestream_unmount;
1732
1733 root = igrab(VFS_I(mp->m_rootip));
1734 if (!root) {
1735 error = -ENOENT;
1736 goto out_unmount;
1737 }
1738 sb->s_root = d_make_root(root);
1739 if (!sb->s_root) {
1740 error = -ENOMEM;
1741 goto out_unmount;
1742 }
1743
1744 return 0;
1745
1746 out_filestream_unmount:
1747 xfs_filestream_unmount(mp);
1748 out_free_sb:
1749 xfs_freesb(mp);
1750 out_free_stats:
1751 free_percpu(mp->m_stats.xs_stats);
1752 out_destroy_counters:
1753 xfs_destroy_percpu_counters(mp);
1754 out_destroy_workqueues:
1755 xfs_destroy_mount_workqueues(mp);
1756 out_close_devices:
1757 xfs_close_devices(mp);
1758 out_free_fsname:
1759 sb->s_fs_info = NULL;
1760 xfs_free_fsname(mp);
1761 kfree(mp);
1762 out:
1763 return error;
1764
1765 out_unmount:
1766 xfs_filestream_unmount(mp);
1767 xfs_unmountfs(mp);
1768 goto out_free_sb;
1769}
1770
1771STATIC void
1772xfs_fs_put_super(
1773 struct super_block *sb)
1774{
1775 struct xfs_mount *mp = XFS_M(sb);
1776
1777
1778 if (!sb->s_fs_info)
1779 return;
1780
1781 xfs_notice(mp, "Unmounting Filesystem");
1782 xfs_filestream_unmount(mp);
1783 xfs_unmountfs(mp);
1784
1785 xfs_freesb(mp);
1786 free_percpu(mp->m_stats.xs_stats);
1787 xfs_destroy_percpu_counters(mp);
1788 xfs_destroy_mount_workqueues(mp);
1789 xfs_close_devices(mp);
1790
1791 sb->s_fs_info = NULL;
1792 xfs_free_fsname(mp);
1793 kfree(mp);
1794}
1795
1796STATIC struct dentry *
1797xfs_fs_mount(
1798 struct file_system_type *fs_type,
1799 int flags,
1800 const char *dev_name,
1801 void *data)
1802{
1803 return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super);
1804}
1805
1806static long
1807xfs_fs_nr_cached_objects(
1808 struct super_block *sb,
1809 struct shrink_control *sc)
1810{
1811
1812 if (WARN_ON_ONCE(!sb->s_fs_info))
1813 return 0;
1814 return xfs_reclaim_inodes_count(XFS_M(sb));
1815}
1816
1817static long
1818xfs_fs_free_cached_objects(
1819 struct super_block *sb,
1820 struct shrink_control *sc)
1821{
1822 return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan);
1823}
1824
1825static const struct super_operations xfs_super_operations = {
1826 .alloc_inode = xfs_fs_alloc_inode,
1827 .destroy_inode = xfs_fs_destroy_inode,
1828 .dirty_inode = xfs_fs_dirty_inode,
1829 .drop_inode = xfs_fs_drop_inode,
1830 .put_super = xfs_fs_put_super,
1831 .sync_fs = xfs_fs_sync_fs,
1832 .freeze_fs = xfs_fs_freeze,
1833 .unfreeze_fs = xfs_fs_unfreeze,
1834 .statfs = xfs_fs_statfs,
1835 .remount_fs = xfs_fs_remount,
1836 .show_options = xfs_fs_show_options,
1837 .nr_cached_objects = xfs_fs_nr_cached_objects,
1838 .free_cached_objects = xfs_fs_free_cached_objects,
1839};
1840
1841static struct file_system_type xfs_fs_type = {
1842 .owner = THIS_MODULE,
1843 .name = "xfs",
1844 .mount = xfs_fs_mount,
1845 .kill_sb = kill_block_super,
1846 .fs_flags = FS_REQUIRES_DEV,
1847};
1848MODULE_ALIAS_FS("xfs");
1849
1850STATIC int __init
1851xfs_init_zones(void)
1852{
1853 if (bioset_init(&xfs_ioend_bioset, 4 * (PAGE_SIZE / SECTOR_SIZE),
1854 offsetof(struct xfs_ioend, io_inline_bio),
1855 BIOSET_NEED_BVECS))
1856 goto out;
1857
1858 xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t),
1859 "xfs_log_ticket");
1860 if (!xfs_log_ticket_zone)
1861 goto out_free_ioend_bioset;
1862
1863 xfs_bmap_free_item_zone = kmem_zone_init(
1864 sizeof(struct xfs_extent_free_item),
1865 "xfs_bmap_free_item");
1866 if (!xfs_bmap_free_item_zone)
1867 goto out_destroy_log_ticket_zone;
1868
1869 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
1870 "xfs_btree_cur");
1871 if (!xfs_btree_cur_zone)
1872 goto out_destroy_bmap_free_item_zone;
1873
1874 xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t),
1875 "xfs_da_state");
1876 if (!xfs_da_state_zone)
1877 goto out_destroy_btree_cur_zone;
1878
1879 xfs_ifork_zone = kmem_zone_init(sizeof(struct xfs_ifork), "xfs_ifork");
1880 if (!xfs_ifork_zone)
1881 goto out_destroy_da_state_zone;
1882
1883 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
1884 if (!xfs_trans_zone)
1885 goto out_destroy_ifork_zone;
1886
1887
1888
1889
1890
1891
1892
1893 xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item),
1894 "xfs_buf_item");
1895 if (!xfs_buf_item_zone)
1896 goto out_destroy_trans_zone;
1897
1898 xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) +
1899 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
1900 sizeof(xfs_extent_t))), "xfs_efd_item");
1901 if (!xfs_efd_zone)
1902 goto out_destroy_buf_item_zone;
1903
1904 xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) +
1905 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
1906 sizeof(xfs_extent_t))), "xfs_efi_item");
1907 if (!xfs_efi_zone)
1908 goto out_destroy_efd_zone;
1909
1910 xfs_inode_zone =
1911 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
1912 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD |
1913 KM_ZONE_ACCOUNT, xfs_fs_inode_init_once);
1914 if (!xfs_inode_zone)
1915 goto out_destroy_efi_zone;
1916
1917 xfs_ili_zone =
1918 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
1919 KM_ZONE_SPREAD, NULL);
1920 if (!xfs_ili_zone)
1921 goto out_destroy_inode_zone;
1922 xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item),
1923 "xfs_icr");
1924 if (!xfs_icreate_zone)
1925 goto out_destroy_ili_zone;
1926
1927 xfs_rud_zone = kmem_zone_init(sizeof(struct xfs_rud_log_item),
1928 "xfs_rud_item");
1929 if (!xfs_rud_zone)
1930 goto out_destroy_icreate_zone;
1931
1932 xfs_rui_zone = kmem_zone_init(
1933 xfs_rui_log_item_sizeof(XFS_RUI_MAX_FAST_EXTENTS),
1934 "xfs_rui_item");
1935 if (!xfs_rui_zone)
1936 goto out_destroy_rud_zone;
1937
1938 xfs_cud_zone = kmem_zone_init(sizeof(struct xfs_cud_log_item),
1939 "xfs_cud_item");
1940 if (!xfs_cud_zone)
1941 goto out_destroy_rui_zone;
1942
1943 xfs_cui_zone = kmem_zone_init(
1944 xfs_cui_log_item_sizeof(XFS_CUI_MAX_FAST_EXTENTS),
1945 "xfs_cui_item");
1946 if (!xfs_cui_zone)
1947 goto out_destroy_cud_zone;
1948
1949 xfs_bud_zone = kmem_zone_init(sizeof(struct xfs_bud_log_item),
1950 "xfs_bud_item");
1951 if (!xfs_bud_zone)
1952 goto out_destroy_cui_zone;
1953
1954 xfs_bui_zone = kmem_zone_init(
1955 xfs_bui_log_item_sizeof(XFS_BUI_MAX_FAST_EXTENTS),
1956 "xfs_bui_item");
1957 if (!xfs_bui_zone)
1958 goto out_destroy_bud_zone;
1959
1960 return 0;
1961
1962 out_destroy_bud_zone:
1963 kmem_zone_destroy(xfs_bud_zone);
1964 out_destroy_cui_zone:
1965 kmem_zone_destroy(xfs_cui_zone);
1966 out_destroy_cud_zone:
1967 kmem_zone_destroy(xfs_cud_zone);
1968 out_destroy_rui_zone:
1969 kmem_zone_destroy(xfs_rui_zone);
1970 out_destroy_rud_zone:
1971 kmem_zone_destroy(xfs_rud_zone);
1972 out_destroy_icreate_zone:
1973 kmem_zone_destroy(xfs_icreate_zone);
1974 out_destroy_ili_zone:
1975 kmem_zone_destroy(xfs_ili_zone);
1976 out_destroy_inode_zone:
1977 kmem_zone_destroy(xfs_inode_zone);
1978 out_destroy_efi_zone:
1979 kmem_zone_destroy(xfs_efi_zone);
1980 out_destroy_efd_zone:
1981 kmem_zone_destroy(xfs_efd_zone);
1982 out_destroy_buf_item_zone:
1983 kmem_zone_destroy(xfs_buf_item_zone);
1984 out_destroy_trans_zone:
1985 kmem_zone_destroy(xfs_trans_zone);
1986 out_destroy_ifork_zone:
1987 kmem_zone_destroy(xfs_ifork_zone);
1988 out_destroy_da_state_zone:
1989 kmem_zone_destroy(xfs_da_state_zone);
1990 out_destroy_btree_cur_zone:
1991 kmem_zone_destroy(xfs_btree_cur_zone);
1992 out_destroy_bmap_free_item_zone:
1993 kmem_zone_destroy(xfs_bmap_free_item_zone);
1994 out_destroy_log_ticket_zone:
1995 kmem_zone_destroy(xfs_log_ticket_zone);
1996 out_free_ioend_bioset:
1997 bioset_exit(&xfs_ioend_bioset);
1998 out:
1999 return -ENOMEM;
2000}
2001
2002STATIC void
2003xfs_destroy_zones(void)
2004{
2005
2006
2007
2008
2009 rcu_barrier();
2010 kmem_zone_destroy(xfs_bui_zone);
2011 kmem_zone_destroy(xfs_bud_zone);
2012 kmem_zone_destroy(xfs_cui_zone);
2013 kmem_zone_destroy(xfs_cud_zone);
2014 kmem_zone_destroy(xfs_rui_zone);
2015 kmem_zone_destroy(xfs_rud_zone);
2016 kmem_zone_destroy(xfs_icreate_zone);
2017 kmem_zone_destroy(xfs_ili_zone);
2018 kmem_zone_destroy(xfs_inode_zone);
2019 kmem_zone_destroy(xfs_efi_zone);
2020 kmem_zone_destroy(xfs_efd_zone);
2021 kmem_zone_destroy(xfs_buf_item_zone);
2022 kmem_zone_destroy(xfs_trans_zone);
2023 kmem_zone_destroy(xfs_ifork_zone);
2024 kmem_zone_destroy(xfs_da_state_zone);
2025 kmem_zone_destroy(xfs_btree_cur_zone);
2026 kmem_zone_destroy(xfs_bmap_free_item_zone);
2027 kmem_zone_destroy(xfs_log_ticket_zone);
2028 bioset_exit(&xfs_ioend_bioset);
2029}
2030
2031STATIC int __init
2032xfs_init_workqueues(void)
2033{
2034
2035
2036
2037
2038
2039
2040 xfs_alloc_wq = alloc_workqueue("xfsalloc",
2041 WQ_MEM_RECLAIM|WQ_FREEZABLE, 0);
2042 if (!xfs_alloc_wq)
2043 return -ENOMEM;
2044
2045 xfs_discard_wq = alloc_workqueue("xfsdiscard", WQ_UNBOUND, 0);
2046 if (!xfs_discard_wq)
2047 goto out_free_alloc_wq;
2048
2049 return 0;
2050out_free_alloc_wq:
2051 destroy_workqueue(xfs_alloc_wq);
2052 return -ENOMEM;
2053}
2054
2055STATIC void
2056xfs_destroy_workqueues(void)
2057{
2058 destroy_workqueue(xfs_discard_wq);
2059 destroy_workqueue(xfs_alloc_wq);
2060}
2061
2062STATIC int __init
2063init_xfs_fs(void)
2064{
2065 int error;
2066
2067 xfs_check_ondisk_structs();
2068
2069 printk(KERN_INFO XFS_VERSION_STRING " with "
2070 XFS_BUILD_OPTIONS " enabled\n");
2071
2072 xfs_dir_startup();
2073
2074 error = xfs_init_zones();
2075 if (error)
2076 goto out;
2077
2078 error = xfs_init_workqueues();
2079 if (error)
2080 goto out_destroy_zones;
2081
2082 error = xfs_mru_cache_init();
2083 if (error)
2084 goto out_destroy_wq;
2085
2086 error = xfs_buf_init();
2087 if (error)
2088 goto out_mru_cache_uninit;
2089
2090 error = xfs_init_procfs();
2091 if (error)
2092 goto out_buf_terminate;
2093
2094 error = xfs_sysctl_register();
2095 if (error)
2096 goto out_cleanup_procfs;
2097
2098 xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
2099 if (!xfs_kset) {
2100 error = -ENOMEM;
2101 goto out_sysctl_unregister;
2102 }
2103
2104 xfsstats.xs_kobj.kobject.kset = xfs_kset;
2105
2106 xfsstats.xs_stats = alloc_percpu(struct xfsstats);
2107 if (!xfsstats.xs_stats) {
2108 error = -ENOMEM;
2109 goto out_kset_unregister;
2110 }
2111
2112 error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL,
2113 "stats");
2114 if (error)
2115 goto out_free_stats;
2116
2117#ifdef DEBUG
2118 xfs_dbg_kobj.kobject.kset = xfs_kset;
2119 error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug");
2120 if (error)
2121 goto out_remove_stats_kobj;
2122#endif
2123
2124 error = xfs_qm_init();
2125 if (error)
2126 goto out_remove_dbg_kobj;
2127
2128 error = register_filesystem(&xfs_fs_type);
2129 if (error)
2130 goto out_qm_exit;
2131 return 0;
2132
2133 out_qm_exit:
2134 xfs_qm_exit();
2135 out_remove_dbg_kobj:
2136#ifdef DEBUG
2137 xfs_sysfs_del(&xfs_dbg_kobj);
2138 out_remove_stats_kobj:
2139#endif
2140 xfs_sysfs_del(&xfsstats.xs_kobj);
2141 out_free_stats:
2142 free_percpu(xfsstats.xs_stats);
2143 out_kset_unregister:
2144 kset_unregister(xfs_kset);
2145 out_sysctl_unregister:
2146 xfs_sysctl_unregister();
2147 out_cleanup_procfs:
2148 xfs_cleanup_procfs();
2149 out_buf_terminate:
2150 xfs_buf_terminate();
2151 out_mru_cache_uninit:
2152 xfs_mru_cache_uninit();
2153 out_destroy_wq:
2154 xfs_destroy_workqueues();
2155 out_destroy_zones:
2156 xfs_destroy_zones();
2157 out:
2158 return error;
2159}
2160
2161STATIC void __exit
2162exit_xfs_fs(void)
2163{
2164 xfs_qm_exit();
2165 unregister_filesystem(&xfs_fs_type);
2166#ifdef DEBUG
2167 xfs_sysfs_del(&xfs_dbg_kobj);
2168#endif
2169 xfs_sysfs_del(&xfsstats.xs_kobj);
2170 free_percpu(xfsstats.xs_stats);
2171 kset_unregister(xfs_kset);
2172 xfs_sysctl_unregister();
2173 xfs_cleanup_procfs();
2174 xfs_buf_terminate();
2175 xfs_mru_cache_uninit();
2176 xfs_destroy_workqueues();
2177 xfs_destroy_zones();
2178 xfs_uuid_table_free();
2179}
2180
2181module_init(init_xfs_fs);
2182module_exit(exit_xfs_fs);
2183
2184MODULE_AUTHOR("Silicon Graphics, Inc.");
2185MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
2186MODULE_LICENSE("GPL");
2187