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19#include "xfs.h"
20#include "xfs_log.h"
21#include "xfs_inum.h"
22#include "xfs_trans.h"
23#include "xfs_sb.h"
24#include "xfs_ag.h"
25#include "xfs_dir2.h"
26#include "xfs_alloc.h"
27#include "xfs_quota.h"
28#include "xfs_mount.h"
29#include "xfs_bmap_btree.h"
30#include "xfs_alloc_btree.h"
31#include "xfs_ialloc_btree.h"
32#include "xfs_dinode.h"
33#include "xfs_inode.h"
34#include "xfs_btree.h"
35#include "xfs_ialloc.h"
36#include "xfs_bmap.h"
37#include "xfs_rtalloc.h"
38#include "xfs_error.h"
39#include "xfs_itable.h"
40#include "xfs_fsops.h"
41#include "xfs_attr.h"
42#include "xfs_buf_item.h"
43#include "xfs_utils.h"
44#include "xfs_vnodeops.h"
45#include "xfs_log_priv.h"
46#include "xfs_trans_priv.h"
47#include "xfs_filestream.h"
48#include "xfs_da_btree.h"
49#include "xfs_extfree_item.h"
50#include "xfs_mru_cache.h"
51#include "xfs_inode_item.h"
52#include "xfs_icache.h"
53#include "xfs_trace.h"
54
55#include <linux/namei.h>
56#include <linux/init.h>
57#include <linux/slab.h>
58#include <linux/mount.h>
59#include <linux/mempool.h>
60#include <linux/writeback.h>
61#include <linux/kthread.h>
62#include <linux/freezer.h>
63#include <linux/parser.h>
64
65static const struct super_operations xfs_super_operations;
66static kmem_zone_t *xfs_ioend_zone;
67mempool_t *xfs_ioend_pool;
68
69#define MNTOPT_LOGBUFS "logbufs"
70#define MNTOPT_LOGBSIZE "logbsize"
71#define MNTOPT_LOGDEV "logdev"
72#define MNTOPT_RTDEV "rtdev"
73#define MNTOPT_BIOSIZE "biosize"
74#define MNTOPT_WSYNC "wsync"
75#define MNTOPT_NOALIGN "noalign"
76#define MNTOPT_SWALLOC "swalloc"
77#define MNTOPT_SUNIT "sunit"
78#define MNTOPT_SWIDTH "swidth"
79#define MNTOPT_NOUUID "nouuid"
80#define MNTOPT_MTPT "mtpt"
81#define MNTOPT_GRPID "grpid"
82#define MNTOPT_NOGRPID "nogrpid"
83#define MNTOPT_BSDGROUPS "bsdgroups"
84#define MNTOPT_SYSVGROUPS "sysvgroups"
85#define MNTOPT_ALLOCSIZE "allocsize"
86#define MNTOPT_NORECOVERY "norecovery"
87#define MNTOPT_BARRIER "barrier"
88
89#define MNTOPT_NOBARRIER "nobarrier"
90#define MNTOPT_64BITINODE "inode64"
91#define MNTOPT_32BITINODE "inode32"
92
93#define MNTOPT_IKEEP "ikeep"
94#define MNTOPT_NOIKEEP "noikeep"
95#define MNTOPT_LARGEIO "largeio"
96#define MNTOPT_NOLARGEIO "nolargeio"
97
98#define MNTOPT_ATTR2 "attr2"
99#define MNTOPT_NOATTR2 "noattr2"
100#define MNTOPT_FILESTREAM "filestreams"
101#define MNTOPT_QUOTA "quota"
102#define MNTOPT_NOQUOTA "noquota"
103#define MNTOPT_USRQUOTA "usrquota"
104#define MNTOPT_GRPQUOTA "grpquota"
105#define MNTOPT_PRJQUOTA "prjquota"
106#define MNTOPT_UQUOTA "uquota"
107#define MNTOPT_GQUOTA "gquota"
108#define MNTOPT_PQUOTA "pquota"
109#define MNTOPT_UQUOTANOENF "uqnoenforce"
110#define MNTOPT_GQUOTANOENF "gqnoenforce"
111#define MNTOPT_PQUOTANOENF "pqnoenforce"
112#define MNTOPT_QUOTANOENF "qnoenforce"
113#define MNTOPT_DELAYLOG "delaylog"
114#define MNTOPT_NODELAYLOG "nodelaylog"
115#define MNTOPT_DISCARD "discard"
116#define MNTOPT_NODISCARD "nodiscard"
117
118
119
120
121
122
123
124enum {
125 Opt_barrier,
126 Opt_nobarrier,
127 Opt_inode64,
128 Opt_inode32,
129 Opt_err
130};
131
132static const match_table_t tokens = {
133 {Opt_barrier, "barrier"},
134 {Opt_nobarrier, "nobarrier"},
135 {Opt_inode64, "inode64"},
136 {Opt_inode32, "inode32"},
137 {Opt_err, NULL}
138};
139
140
141STATIC unsigned long
142suffix_kstrtoint(char *s, unsigned int base, int *res)
143{
144 int last, shift_left_factor = 0, _res;
145 char *value = s;
146
147 last = strlen(value) - 1;
148 if (value[last] == 'K' || value[last] == 'k') {
149 shift_left_factor = 10;
150 value[last] = '\0';
151 }
152 if (value[last] == 'M' || value[last] == 'm') {
153 shift_left_factor = 20;
154 value[last] = '\0';
155 }
156 if (value[last] == 'G' || value[last] == 'g') {
157 shift_left_factor = 30;
158 value[last] = '\0';
159 }
160
161 if (kstrtoint(s, base, &_res))
162 return -EINVAL;
163 *res = _res << shift_left_factor;
164 return 0;
165}
166
167
168
169
170
171
172
173
174STATIC int
175xfs_parseargs(
176 struct xfs_mount *mp,
177 char *options)
178{
179 struct super_block *sb = mp->m_super;
180 char *this_char, *value;
181 int dsunit = 0;
182 int dswidth = 0;
183 int iosize = 0;
184 __uint8_t iosizelog = 0;
185
186
187
188
189
190 mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
191 if (!mp->m_fsname)
192 return ENOMEM;
193 mp->m_fsname_len = strlen(mp->m_fsname) + 1;
194
195
196
197
198 if (sb->s_flags & MS_RDONLY)
199 mp->m_flags |= XFS_MOUNT_RDONLY;
200 if (sb->s_flags & MS_DIRSYNC)
201 mp->m_flags |= XFS_MOUNT_DIRSYNC;
202 if (sb->s_flags & MS_SYNCHRONOUS)
203 mp->m_flags |= XFS_MOUNT_WSYNC;
204
205
206
207
208
209 mp->m_flags |= XFS_MOUNT_BARRIER;
210 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
211#if !XFS_BIG_INUMS
212 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
213#endif
214
215
216
217
218 mp->m_logbufs = -1;
219 mp->m_logbsize = -1;
220
221 if (!options)
222 goto done;
223
224 while ((this_char = strsep(&options, ",")) != NULL) {
225 if (!*this_char)
226 continue;
227 if ((value = strchr(this_char, '=')) != NULL)
228 *value++ = 0;
229
230 if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
231 if (!value || !*value) {
232 xfs_warn(mp, "%s option requires an argument",
233 this_char);
234 return EINVAL;
235 }
236 if (kstrtoint(value, 10, &mp->m_logbufs))
237 return EINVAL;
238 } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
239 if (!value || !*value) {
240 xfs_warn(mp, "%s option requires an argument",
241 this_char);
242 return EINVAL;
243 }
244 if (suffix_kstrtoint(value, 10, &mp->m_logbsize))
245 return EINVAL;
246 } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
247 if (!value || !*value) {
248 xfs_warn(mp, "%s option requires an argument",
249 this_char);
250 return EINVAL;
251 }
252 mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
253 if (!mp->m_logname)
254 return ENOMEM;
255 } else if (!strcmp(this_char, MNTOPT_MTPT)) {
256 xfs_warn(mp, "%s option not allowed on this system",
257 this_char);
258 return EINVAL;
259 } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
260 if (!value || !*value) {
261 xfs_warn(mp, "%s option requires an argument",
262 this_char);
263 return EINVAL;
264 }
265 mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL);
266 if (!mp->m_rtname)
267 return ENOMEM;
268 } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
269 if (!value || !*value) {
270 xfs_warn(mp, "%s option requires an argument",
271 this_char);
272 return EINVAL;
273 }
274 if (kstrtoint(value, 10, &iosize))
275 return EINVAL;
276 iosizelog = ffs(iosize) - 1;
277 } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
278 if (!value || !*value) {
279 xfs_warn(mp, "%s option requires an argument",
280 this_char);
281 return EINVAL;
282 }
283 if (suffix_kstrtoint(value, 10, &iosize))
284 return EINVAL;
285 iosizelog = ffs(iosize) - 1;
286 } else if (!strcmp(this_char, MNTOPT_GRPID) ||
287 !strcmp(this_char, MNTOPT_BSDGROUPS)) {
288 mp->m_flags |= XFS_MOUNT_GRPID;
289 } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
290 !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
291 mp->m_flags &= ~XFS_MOUNT_GRPID;
292 } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
293 mp->m_flags |= XFS_MOUNT_WSYNC;
294 } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
295 mp->m_flags |= XFS_MOUNT_NORECOVERY;
296 } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
297 mp->m_flags |= XFS_MOUNT_NOALIGN;
298 } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
299 mp->m_flags |= XFS_MOUNT_SWALLOC;
300 } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
301 if (!value || !*value) {
302 xfs_warn(mp, "%s option requires an argument",
303 this_char);
304 return EINVAL;
305 }
306 if (kstrtoint(value, 10, &dsunit))
307 return EINVAL;
308 } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
309 if (!value || !*value) {
310 xfs_warn(mp, "%s option requires an argument",
311 this_char);
312 return EINVAL;
313 }
314 if (kstrtoint(value, 10, &dswidth))
315 return EINVAL;
316 } else if (!strcmp(this_char, MNTOPT_32BITINODE)) {
317 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
318 } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
319 mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS;
320#if !XFS_BIG_INUMS
321 xfs_warn(mp, "%s option not allowed on this system",
322 this_char);
323 return EINVAL;
324#endif
325 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
326 mp->m_flags |= XFS_MOUNT_NOUUID;
327 } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
328 mp->m_flags |= XFS_MOUNT_BARRIER;
329 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
330 mp->m_flags &= ~XFS_MOUNT_BARRIER;
331 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
332 mp->m_flags |= XFS_MOUNT_IKEEP;
333 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
334 mp->m_flags &= ~XFS_MOUNT_IKEEP;
335 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
336 mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE;
337 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
338 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
339 } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
340 mp->m_flags |= XFS_MOUNT_ATTR2;
341 } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
342 mp->m_flags &= ~XFS_MOUNT_ATTR2;
343 mp->m_flags |= XFS_MOUNT_NOATTR2;
344 } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
345 mp->m_flags |= XFS_MOUNT_FILESTREAMS;
346 } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
347 mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT;
348 mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD;
349 mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE;
350 } else if (!strcmp(this_char, MNTOPT_QUOTA) ||
351 !strcmp(this_char, MNTOPT_UQUOTA) ||
352 !strcmp(this_char, MNTOPT_USRQUOTA)) {
353 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE |
354 XFS_UQUOTA_ENFD);
355 } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) ||
356 !strcmp(this_char, MNTOPT_UQUOTANOENF)) {
357 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
358 mp->m_qflags &= ~XFS_UQUOTA_ENFD;
359 } else if (!strcmp(this_char, MNTOPT_PQUOTA) ||
360 !strcmp(this_char, MNTOPT_PRJQUOTA)) {
361 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE |
362 XFS_OQUOTA_ENFD);
363 } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) {
364 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
365 mp->m_qflags &= ~XFS_OQUOTA_ENFD;
366 } else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
367 !strcmp(this_char, MNTOPT_GRPQUOTA)) {
368 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE |
369 XFS_OQUOTA_ENFD);
370 } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
371 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
372 mp->m_qflags &= ~XFS_OQUOTA_ENFD;
373 } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) {
374 xfs_warn(mp,
375 "delaylog is the default now, option is deprecated.");
376 } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) {
377 xfs_warn(mp,
378 "nodelaylog support has been removed, option is deprecated.");
379 } else if (!strcmp(this_char, MNTOPT_DISCARD)) {
380 mp->m_flags |= XFS_MOUNT_DISCARD;
381 } else if (!strcmp(this_char, MNTOPT_NODISCARD)) {
382 mp->m_flags &= ~XFS_MOUNT_DISCARD;
383 } else if (!strcmp(this_char, "ihashsize")) {
384 xfs_warn(mp,
385 "ihashsize no longer used, option is deprecated.");
386 } else if (!strcmp(this_char, "osyncisdsync")) {
387 xfs_warn(mp,
388 "osyncisdsync has no effect, option is deprecated.");
389 } else if (!strcmp(this_char, "osyncisosync")) {
390 xfs_warn(mp,
391 "osyncisosync has no effect, option is deprecated.");
392 } else if (!strcmp(this_char, "irixsgid")) {
393 xfs_warn(mp,
394 "irixsgid is now a sysctl(2) variable, option is deprecated.");
395 } else {
396 xfs_warn(mp, "unknown mount option [%s].", this_char);
397 return EINVAL;
398 }
399 }
400
401
402
403
404 if ((mp->m_flags & XFS_MOUNT_NORECOVERY) &&
405 !(mp->m_flags & XFS_MOUNT_RDONLY)) {
406 xfs_warn(mp, "no-recovery mounts must be read-only.");
407 return EINVAL;
408 }
409
410 if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) {
411 xfs_warn(mp,
412 "sunit and swidth options incompatible with the noalign option");
413 return EINVAL;
414 }
415
416#ifndef CONFIG_XFS_QUOTA
417 if (XFS_IS_QUOTA_RUNNING(mp)) {
418 xfs_warn(mp, "quota support not available in this kernel.");
419 return EINVAL;
420 }
421#endif
422
423 if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) &&
424 (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) {
425 xfs_warn(mp, "cannot mount with both project and group quota");
426 return EINVAL;
427 }
428
429 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
430 xfs_warn(mp, "sunit and swidth must be specified together");
431 return EINVAL;
432 }
433
434 if (dsunit && (dswidth % dsunit != 0)) {
435 xfs_warn(mp,
436 "stripe width (%d) must be a multiple of the stripe unit (%d)",
437 dswidth, dsunit);
438 return EINVAL;
439 }
440
441done:
442 if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) {
443
444
445
446
447
448
449 if (dsunit) {
450 mp->m_dalign = dsunit;
451 mp->m_flags |= XFS_MOUNT_RETERR;
452 }
453
454 if (dswidth)
455 mp->m_swidth = dswidth;
456 }
457
458 if (mp->m_logbufs != -1 &&
459 mp->m_logbufs != 0 &&
460 (mp->m_logbufs < XLOG_MIN_ICLOGS ||
461 mp->m_logbufs > XLOG_MAX_ICLOGS)) {
462 xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]",
463 mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
464 return XFS_ERROR(EINVAL);
465 }
466 if (mp->m_logbsize != -1 &&
467 mp->m_logbsize != 0 &&
468 (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE ||
469 mp->m_logbsize > XLOG_MAX_RECORD_BSIZE ||
470 !is_power_of_2(mp->m_logbsize))) {
471 xfs_warn(mp,
472 "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
473 mp->m_logbsize);
474 return XFS_ERROR(EINVAL);
475 }
476
477 if (iosizelog) {
478 if (iosizelog > XFS_MAX_IO_LOG ||
479 iosizelog < XFS_MIN_IO_LOG) {
480 xfs_warn(mp, "invalid log iosize: %d [not %d-%d]",
481 iosizelog, XFS_MIN_IO_LOG,
482 XFS_MAX_IO_LOG);
483 return XFS_ERROR(EINVAL);
484 }
485
486 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
487 mp->m_readio_log = iosizelog;
488 mp->m_writeio_log = iosizelog;
489 }
490
491 return 0;
492}
493
494struct proc_xfs_info {
495 int flag;
496 char *str;
497};
498
499STATIC int
500xfs_showargs(
501 struct xfs_mount *mp,
502 struct seq_file *m)
503{
504 static struct proc_xfs_info xfs_info_set[] = {
505
506 { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP },
507 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
508 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
509 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
510 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
511 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
512 { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 },
513 { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM },
514 { XFS_MOUNT_GRPID, "," MNTOPT_GRPID },
515 { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD },
516 { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE },
517 { 0, NULL }
518 };
519 static struct proc_xfs_info xfs_info_unset[] = {
520
521 { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO },
522 { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER },
523 { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE },
524 { 0, NULL }
525 };
526 struct proc_xfs_info *xfs_infop;
527
528 for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) {
529 if (mp->m_flags & xfs_infop->flag)
530 seq_puts(m, xfs_infop->str);
531 }
532 for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) {
533 if (!(mp->m_flags & xfs_infop->flag))
534 seq_puts(m, xfs_infop->str);
535 }
536
537 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
538 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
539 (int)(1 << mp->m_writeio_log) >> 10);
540
541 if (mp->m_logbufs > 0)
542 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
543 if (mp->m_logbsize > 0)
544 seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
545
546 if (mp->m_logname)
547 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
548 if (mp->m_rtname)
549 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
550
551 if (mp->m_dalign > 0)
552 seq_printf(m, "," MNTOPT_SUNIT "=%d",
553 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
554 if (mp->m_swidth > 0)
555 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
556 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
557
558 if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD))
559 seq_puts(m, "," MNTOPT_USRQUOTA);
560 else if (mp->m_qflags & XFS_UQUOTA_ACCT)
561 seq_puts(m, "," MNTOPT_UQUOTANOENF);
562
563
564
565 if (mp->m_qflags & XFS_PQUOTA_ACCT) {
566 if (mp->m_qflags & XFS_OQUOTA_ENFD)
567 seq_puts(m, "," MNTOPT_PRJQUOTA);
568 else
569 seq_puts(m, "," MNTOPT_PQUOTANOENF);
570 } else if (mp->m_qflags & XFS_GQUOTA_ACCT) {
571 if (mp->m_qflags & XFS_OQUOTA_ENFD)
572 seq_puts(m, "," MNTOPT_GRPQUOTA);
573 else
574 seq_puts(m, "," MNTOPT_GQUOTANOENF);
575 }
576
577 if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
578 seq_puts(m, "," MNTOPT_NOQUOTA);
579
580 return 0;
581}
582__uint64_t
583xfs_max_file_offset(
584 unsigned int blockshift)
585{
586 unsigned int pagefactor = 1;
587 unsigned int bitshift = BITS_PER_LONG - 1;
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603#if BITS_PER_LONG == 32
604# if defined(CONFIG_LBDAF)
605 ASSERT(sizeof(sector_t) == 8);
606 pagefactor = PAGE_CACHE_SIZE;
607 bitshift = BITS_PER_LONG;
608# else
609 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
610# endif
611#endif
612
613 return (((__uint64_t)pagefactor) << bitshift) - 1;
614}
615
616xfs_agnumber_t
617xfs_set_inode32(struct xfs_mount *mp)
618{
619 xfs_agnumber_t index = 0;
620 xfs_agnumber_t maxagi = 0;
621 xfs_sb_t *sbp = &mp->m_sb;
622 xfs_agnumber_t max_metadata;
623 xfs_agino_t agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks -1, 0);
624 xfs_ino_t ino = XFS_AGINO_TO_INO(mp, sbp->sb_agcount -1, agino);
625 xfs_perag_t *pag;
626
627
628
629
630 if (mp->m_maxicount) {
631 __uint64_t icount;
632
633 icount = sbp->sb_dblocks * sbp->sb_imax_pct;
634 do_div(icount, 100);
635 icount += sbp->sb_agblocks - 1;
636 do_div(icount, sbp->sb_agblocks);
637 max_metadata = icount;
638 } else {
639 max_metadata = sbp->sb_agcount;
640 }
641
642 for (index = 0; index < sbp->sb_agcount; index++) {
643 ino = XFS_AGINO_TO_INO(mp, index, agino);
644
645 if (ino > XFS_MAXINUMBER_32) {
646 pag = xfs_perag_get(mp, index);
647 pag->pagi_inodeok = 0;
648 pag->pagf_metadata = 0;
649 xfs_perag_put(pag);
650 continue;
651 }
652
653 pag = xfs_perag_get(mp, index);
654 pag->pagi_inodeok = 1;
655 maxagi++;
656 if (index < max_metadata)
657 pag->pagf_metadata = 1;
658 xfs_perag_put(pag);
659 }
660 mp->m_flags |= (XFS_MOUNT_32BITINODES |
661 XFS_MOUNT_SMALL_INUMS);
662
663 return maxagi;
664}
665
666xfs_agnumber_t
667xfs_set_inode64(struct xfs_mount *mp)
668{
669 xfs_agnumber_t index = 0;
670
671 for (index = 0; index < mp->m_sb.sb_agcount; index++) {
672 struct xfs_perag *pag;
673
674 pag = xfs_perag_get(mp, index);
675 pag->pagi_inodeok = 1;
676 pag->pagf_metadata = 0;
677 xfs_perag_put(pag);
678 }
679
680
681
682
683
684
685 mp->m_flags &= ~(XFS_MOUNT_32BITINODES |
686 XFS_MOUNT_SMALL_INUMS);
687 return index;
688}
689
690STATIC int
691xfs_blkdev_get(
692 xfs_mount_t *mp,
693 const char *name,
694 struct block_device **bdevp)
695{
696 int error = 0;
697
698 *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL,
699 mp);
700 if (IS_ERR(*bdevp)) {
701 error = PTR_ERR(*bdevp);
702 xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error);
703 }
704
705 return -error;
706}
707
708STATIC void
709xfs_blkdev_put(
710 struct block_device *bdev)
711{
712 if (bdev)
713 blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
714}
715
716void
717xfs_blkdev_issue_flush(
718 xfs_buftarg_t *buftarg)
719{
720 blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL);
721}
722
723STATIC void
724xfs_close_devices(
725 struct xfs_mount *mp)
726{
727 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
728 struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
729 xfs_free_buftarg(mp, mp->m_logdev_targp);
730 xfs_blkdev_put(logdev);
731 }
732 if (mp->m_rtdev_targp) {
733 struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
734 xfs_free_buftarg(mp, mp->m_rtdev_targp);
735 xfs_blkdev_put(rtdev);
736 }
737 xfs_free_buftarg(mp, mp->m_ddev_targp);
738}
739
740
741
742
743
744
745
746
747
748
749
750STATIC int
751xfs_open_devices(
752 struct xfs_mount *mp)
753{
754 struct block_device *ddev = mp->m_super->s_bdev;
755 struct block_device *logdev = NULL, *rtdev = NULL;
756 int error;
757
758
759
760
761 if (mp->m_logname) {
762 error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
763 if (error)
764 goto out;
765 }
766
767 if (mp->m_rtname) {
768 error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
769 if (error)
770 goto out_close_logdev;
771
772 if (rtdev == ddev || rtdev == logdev) {
773 xfs_warn(mp,
774 "Cannot mount filesystem with identical rtdev and ddev/logdev.");
775 error = EINVAL;
776 goto out_close_rtdev;
777 }
778 }
779
780
781
782
783 error = ENOMEM;
784 mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname);
785 if (!mp->m_ddev_targp)
786 goto out_close_rtdev;
787
788 if (rtdev) {
789 mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1,
790 mp->m_fsname);
791 if (!mp->m_rtdev_targp)
792 goto out_free_ddev_targ;
793 }
794
795 if (logdev && logdev != ddev) {
796 mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1,
797 mp->m_fsname);
798 if (!mp->m_logdev_targp)
799 goto out_free_rtdev_targ;
800 } else {
801 mp->m_logdev_targp = mp->m_ddev_targp;
802 }
803
804 return 0;
805
806 out_free_rtdev_targ:
807 if (mp->m_rtdev_targp)
808 xfs_free_buftarg(mp, mp->m_rtdev_targp);
809 out_free_ddev_targ:
810 xfs_free_buftarg(mp, mp->m_ddev_targp);
811 out_close_rtdev:
812 if (rtdev)
813 xfs_blkdev_put(rtdev);
814 out_close_logdev:
815 if (logdev && logdev != ddev)
816 xfs_blkdev_put(logdev);
817 out:
818 return error;
819}
820
821
822
823
824STATIC int
825xfs_setup_devices(
826 struct xfs_mount *mp)
827{
828 int error;
829
830 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
831 mp->m_sb.sb_sectsize);
832 if (error)
833 return error;
834
835 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
836 unsigned int log_sector_size = BBSIZE;
837
838 if (xfs_sb_version_hassector(&mp->m_sb))
839 log_sector_size = mp->m_sb.sb_logsectsize;
840 error = xfs_setsize_buftarg(mp->m_logdev_targp,
841 mp->m_sb.sb_blocksize,
842 log_sector_size);
843 if (error)
844 return error;
845 }
846 if (mp->m_rtdev_targp) {
847 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
848 mp->m_sb.sb_blocksize,
849 mp->m_sb.sb_sectsize);
850 if (error)
851 return error;
852 }
853
854 return 0;
855}
856
857STATIC int
858xfs_init_mount_workqueues(
859 struct xfs_mount *mp)
860{
861 mp->m_data_workqueue = alloc_workqueue("xfs-data/%s",
862 WQ_MEM_RECLAIM, 0, mp->m_fsname);
863 if (!mp->m_data_workqueue)
864 goto out;
865
866 mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
867 WQ_MEM_RECLAIM, 0, mp->m_fsname);
868 if (!mp->m_unwritten_workqueue)
869 goto out_destroy_data_iodone_queue;
870
871 mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s",
872 WQ_MEM_RECLAIM, 0, mp->m_fsname);
873 if (!mp->m_cil_workqueue)
874 goto out_destroy_unwritten;
875
876 mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
877 WQ_NON_REENTRANT, 0, mp->m_fsname);
878 if (!mp->m_reclaim_workqueue)
879 goto out_destroy_cil;
880
881 mp->m_log_workqueue = alloc_workqueue("xfs-log/%s",
882 WQ_NON_REENTRANT, 0, mp->m_fsname);
883 if (!mp->m_log_workqueue)
884 goto out_destroy_reclaim;
885
886 mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
887 WQ_NON_REENTRANT, 0, mp->m_fsname);
888 if (!mp->m_eofblocks_workqueue)
889 goto out_destroy_log;
890
891 return 0;
892
893out_destroy_log:
894 destroy_workqueue(mp->m_log_workqueue);
895out_destroy_reclaim:
896 destroy_workqueue(mp->m_reclaim_workqueue);
897out_destroy_cil:
898 destroy_workqueue(mp->m_cil_workqueue);
899out_destroy_unwritten:
900 destroy_workqueue(mp->m_unwritten_workqueue);
901out_destroy_data_iodone_queue:
902 destroy_workqueue(mp->m_data_workqueue);
903out:
904 return -ENOMEM;
905}
906
907STATIC void
908xfs_destroy_mount_workqueues(
909 struct xfs_mount *mp)
910{
911 destroy_workqueue(mp->m_eofblocks_workqueue);
912 destroy_workqueue(mp->m_log_workqueue);
913 destroy_workqueue(mp->m_reclaim_workqueue);
914 destroy_workqueue(mp->m_cil_workqueue);
915 destroy_workqueue(mp->m_data_workqueue);
916 destroy_workqueue(mp->m_unwritten_workqueue);
917}
918
919
920
921
922
923
924
925void
926xfs_flush_inodes(
927 struct xfs_mount *mp)
928{
929 struct super_block *sb = mp->m_super;
930
931 if (down_read_trylock(&sb->s_umount)) {
932 sync_inodes_sb(sb);
933 up_read(&sb->s_umount);
934 }
935}
936
937
938STATIC struct inode *
939xfs_fs_alloc_inode(
940 struct super_block *sb)
941{
942 BUG();
943 return NULL;
944}
945
946
947
948
949
950STATIC void
951xfs_fs_destroy_inode(
952 struct inode *inode)
953{
954 struct xfs_inode *ip = XFS_I(inode);
955
956 trace_xfs_destroy_inode(ip);
957
958 XFS_STATS_INC(vn_reclaim);
959
960
961 if (is_bad_inode(inode))
962 goto out_reclaim;
963
964 ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
965
966
967
968
969 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE));
970 ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM));
971
972
973
974
975
976
977
978
979out_reclaim:
980 xfs_inode_set_reclaim_tag(ip);
981}
982
983
984
985
986
987
988
989
990
991STATIC void
992xfs_fs_inode_init_once(
993 void *inode)
994{
995 struct xfs_inode *ip = inode;
996
997 memset(ip, 0, sizeof(struct xfs_inode));
998
999
1000 inode_init_once(VFS_I(ip));
1001
1002
1003 atomic_set(&ip->i_pincount, 0);
1004 spin_lock_init(&ip->i_flags_lock);
1005
1006 mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
1007 "xfsino", ip->i_ino);
1008}
1009
1010STATIC void
1011xfs_fs_evict_inode(
1012 struct inode *inode)
1013{
1014 xfs_inode_t *ip = XFS_I(inode);
1015
1016 ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock));
1017
1018 trace_xfs_evict_inode(ip);
1019
1020 truncate_inode_pages(&inode->i_data, 0);
1021 clear_inode(inode);
1022 XFS_STATS_INC(vn_rele);
1023 XFS_STATS_INC(vn_remove);
1024 XFS_STATS_DEC(vn_active);
1025
1026 xfs_inactive(ip);
1027}
1028
1029
1030
1031
1032
1033
1034
1035
1036STATIC int
1037xfs_fs_drop_inode(
1038 struct inode *inode)
1039{
1040 struct xfs_inode *ip = XFS_I(inode);
1041
1042 return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE);
1043}
1044
1045STATIC void
1046xfs_free_fsname(
1047 struct xfs_mount *mp)
1048{
1049 kfree(mp->m_fsname);
1050 kfree(mp->m_rtname);
1051 kfree(mp->m_logname);
1052}
1053
1054STATIC void
1055xfs_fs_put_super(
1056 struct super_block *sb)
1057{
1058 struct xfs_mount *mp = XFS_M(sb);
1059
1060 xfs_filestream_unmount(mp);
1061 xfs_unmountfs(mp);
1062
1063 xfs_freesb(mp);
1064 xfs_icsb_destroy_counters(mp);
1065 xfs_destroy_mount_workqueues(mp);
1066 xfs_close_devices(mp);
1067 xfs_free_fsname(mp);
1068 kfree(mp);
1069}
1070
1071STATIC int
1072xfs_fs_sync_fs(
1073 struct super_block *sb,
1074 int wait)
1075{
1076 struct xfs_mount *mp = XFS_M(sb);
1077
1078
1079
1080
1081 if (!wait)
1082 return 0;
1083
1084 xfs_log_force(mp, XFS_LOG_SYNC);
1085 if (laptop_mode) {
1086
1087
1088
1089
1090
1091 flush_delayed_work(&mp->m_log->l_work);
1092 }
1093
1094 return 0;
1095}
1096
1097STATIC int
1098xfs_fs_statfs(
1099 struct dentry *dentry,
1100 struct kstatfs *statp)
1101{
1102 struct xfs_mount *mp = XFS_M(dentry->d_sb);
1103 xfs_sb_t *sbp = &mp->m_sb;
1104 struct xfs_inode *ip = XFS_I(dentry->d_inode);
1105 __uint64_t fakeinos, id;
1106 xfs_extlen_t lsize;
1107 __int64_t ffree;
1108
1109 statp->f_type = XFS_SB_MAGIC;
1110 statp->f_namelen = MAXNAMELEN - 1;
1111
1112 id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
1113 statp->f_fsid.val[0] = (u32)id;
1114 statp->f_fsid.val[1] = (u32)(id >> 32);
1115
1116 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
1117
1118 spin_lock(&mp->m_sb_lock);
1119 statp->f_bsize = sbp->sb_blocksize;
1120 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
1121 statp->f_blocks = sbp->sb_dblocks - lsize;
1122 statp->f_bfree = statp->f_bavail =
1123 sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
1124 fakeinos = statp->f_bfree << sbp->sb_inopblog;
1125 statp->f_files =
1126 MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
1127 if (mp->m_maxicount)
1128 statp->f_files = min_t(typeof(statp->f_files),
1129 statp->f_files,
1130 mp->m_maxicount);
1131
1132
1133 ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
1134 statp->f_ffree = max_t(__int64_t, ffree, 0);
1135
1136 spin_unlock(&mp->m_sb_lock);
1137
1138 if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) &&
1139 ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) ==
1140 (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))
1141 xfs_qm_statvfs(ip, statp);
1142 return 0;
1143}
1144
1145STATIC void
1146xfs_save_resvblks(struct xfs_mount *mp)
1147{
1148 __uint64_t resblks = 0;
1149
1150 mp->m_resblks_save = mp->m_resblks;
1151 xfs_reserve_blocks(mp, &resblks, NULL);
1152}
1153
1154STATIC void
1155xfs_restore_resvblks(struct xfs_mount *mp)
1156{
1157 __uint64_t resblks;
1158
1159 if (mp->m_resblks_save) {
1160 resblks = mp->m_resblks_save;
1161 mp->m_resblks_save = 0;
1162 } else
1163 resblks = xfs_default_resblks(mp);
1164
1165 xfs_reserve_blocks(mp, &resblks, NULL);
1166}
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179void
1180xfs_quiesce_attr(
1181 struct xfs_mount *mp)
1182{
1183 int error = 0;
1184
1185
1186 while (atomic_read(&mp->m_active_trans) > 0)
1187 delay(100);
1188
1189
1190 xfs_log_force(mp, XFS_LOG_SYNC);
1191
1192
1193 xfs_reclaim_inodes(mp, 0);
1194 xfs_reclaim_inodes(mp, SYNC_WAIT);
1195
1196
1197 error = xfs_log_sbcount(mp);
1198 if (error)
1199 xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. "
1200 "Frozen image may not be consistent.");
1201
1202
1203
1204
1205 WARN_ON(atomic_read(&mp->m_active_trans) != 0);
1206
1207 xfs_log_quiesce(mp);
1208}
1209
1210STATIC int
1211xfs_fs_remount(
1212 struct super_block *sb,
1213 int *flags,
1214 char *options)
1215{
1216 struct xfs_mount *mp = XFS_M(sb);
1217 substring_t args[MAX_OPT_ARGS];
1218 char *p;
1219 int error;
1220
1221 while ((p = strsep(&options, ",")) != NULL) {
1222 int token;
1223
1224 if (!*p)
1225 continue;
1226
1227 token = match_token(p, tokens, args);
1228 switch (token) {
1229 case Opt_barrier:
1230 mp->m_flags |= XFS_MOUNT_BARRIER;
1231 break;
1232 case Opt_nobarrier:
1233 mp->m_flags &= ~XFS_MOUNT_BARRIER;
1234 break;
1235 case Opt_inode64:
1236 mp->m_maxagi = xfs_set_inode64(mp);
1237 break;
1238 case Opt_inode32:
1239 mp->m_maxagi = xfs_set_inode32(mp);
1240 break;
1241 default:
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258#if 0
1259 xfs_info(mp,
1260 "mount option \"%s\" not supported for remount\n", p);
1261 return -EINVAL;
1262#else
1263 break;
1264#endif
1265 }
1266 }
1267
1268
1269 if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) {
1270 mp->m_flags &= ~XFS_MOUNT_RDONLY;
1271
1272
1273
1274
1275
1276 if (mp->m_update_flags) {
1277 error = xfs_mount_log_sb(mp, mp->m_update_flags);
1278 if (error) {
1279 xfs_warn(mp, "failed to write sb changes");
1280 return error;
1281 }
1282 mp->m_update_flags = 0;
1283 }
1284
1285
1286
1287
1288
1289 xfs_restore_resvblks(mp);
1290 xfs_log_work_queue(mp);
1291 }
1292
1293
1294 if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) {
1295
1296
1297
1298
1299
1300
1301
1302 xfs_save_resvblks(mp);
1303 xfs_quiesce_attr(mp);
1304 mp->m_flags |= XFS_MOUNT_RDONLY;
1305 }
1306
1307 return 0;
1308}
1309
1310
1311
1312
1313
1314
1315STATIC int
1316xfs_fs_freeze(
1317 struct super_block *sb)
1318{
1319 struct xfs_mount *mp = XFS_M(sb);
1320
1321 xfs_save_resvblks(mp);
1322 xfs_quiesce_attr(mp);
1323 return -xfs_fs_log_dummy(mp);
1324}
1325
1326STATIC int
1327xfs_fs_unfreeze(
1328 struct super_block *sb)
1329{
1330 struct xfs_mount *mp = XFS_M(sb);
1331
1332 xfs_restore_resvblks(mp);
1333 xfs_log_work_queue(mp);
1334 return 0;
1335}
1336
1337STATIC int
1338xfs_fs_show_options(
1339 struct seq_file *m,
1340 struct dentry *root)
1341{
1342 return -xfs_showargs(XFS_M(root->d_sb), m);
1343}
1344
1345
1346
1347
1348
1349STATIC int
1350xfs_finish_flags(
1351 struct xfs_mount *mp)
1352{
1353 int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
1354
1355
1356 if (xfs_sb_version_haslogv2(&mp->m_sb)) {
1357 if (mp->m_logbsize <= 0 &&
1358 mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) {
1359 mp->m_logbsize = mp->m_sb.sb_logsunit;
1360 } else if (mp->m_logbsize > 0 &&
1361 mp->m_logbsize < mp->m_sb.sb_logsunit) {
1362 xfs_warn(mp,
1363 "logbuf size must be greater than or equal to log stripe size");
1364 return XFS_ERROR(EINVAL);
1365 }
1366 } else {
1367
1368 if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) {
1369 xfs_warn(mp,
1370 "logbuf size for version 1 logs must be 16K or 32K");
1371 return XFS_ERROR(EINVAL);
1372 }
1373 }
1374
1375
1376
1377
1378 if (xfs_sb_version_hascrc(&mp->m_sb) &&
1379 (mp->m_flags & XFS_MOUNT_NOATTR2)) {
1380 xfs_warn(mp,
1381"Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.",
1382 MNTOPT_NOATTR2, MNTOPT_ATTR2);
1383 return XFS_ERROR(EINVAL);
1384 }
1385
1386
1387
1388
1389
1390 if (xfs_sb_version_hasattr2(&mp->m_sb) &&
1391 !(mp->m_flags & XFS_MOUNT_NOATTR2))
1392 mp->m_flags |= XFS_MOUNT_ATTR2;
1393
1394
1395
1396
1397 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
1398 xfs_warn(mp,
1399 "cannot mount a read-only filesystem as read-write");
1400 return XFS_ERROR(EROFS);
1401 }
1402
1403 return 0;
1404}
1405
1406STATIC int
1407xfs_fs_fill_super(
1408 struct super_block *sb,
1409 void *data,
1410 int silent)
1411{
1412 struct inode *root;
1413 struct xfs_mount *mp = NULL;
1414 int flags = 0, error = ENOMEM;
1415
1416 mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL);
1417 if (!mp)
1418 goto out;
1419
1420 spin_lock_init(&mp->m_sb_lock);
1421 mutex_init(&mp->m_growlock);
1422 atomic_set(&mp->m_active_trans, 0);
1423 INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker);
1424 INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker);
1425
1426 mp->m_super = sb;
1427 sb->s_fs_info = mp;
1428
1429 error = xfs_parseargs(mp, (char *)data);
1430 if (error)
1431 goto out_free_fsname;
1432
1433 sb_min_blocksize(sb, BBSIZE);
1434 sb->s_xattr = xfs_xattr_handlers;
1435 sb->s_export_op = &xfs_export_operations;
1436#ifdef CONFIG_XFS_QUOTA
1437 sb->s_qcop = &xfs_quotactl_operations;
1438#endif
1439 sb->s_op = &xfs_super_operations;
1440
1441 if (silent)
1442 flags |= XFS_MFSI_QUIET;
1443
1444 error = xfs_open_devices(mp);
1445 if (error)
1446 goto out_free_fsname;
1447
1448 error = xfs_init_mount_workqueues(mp);
1449 if (error)
1450 goto out_close_devices;
1451
1452 error = xfs_icsb_init_counters(mp);
1453 if (error)
1454 goto out_destroy_workqueues;
1455
1456 error = xfs_readsb(mp, flags);
1457 if (error)
1458 goto out_destroy_counters;
1459
1460 error = xfs_finish_flags(mp);
1461 if (error)
1462 goto out_free_sb;
1463
1464 error = xfs_setup_devices(mp);
1465 if (error)
1466 goto out_free_sb;
1467
1468 error = xfs_filestream_mount(mp);
1469 if (error)
1470 goto out_free_sb;
1471
1472
1473
1474
1475
1476 sb->s_magic = XFS_SB_MAGIC;
1477 sb->s_blocksize = mp->m_sb.sb_blocksize;
1478 sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
1479 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
1480 sb->s_max_links = XFS_MAXLINK;
1481 sb->s_time_gran = 1;
1482 set_posix_acl_flag(sb);
1483
1484 error = xfs_mountfs(mp);
1485 if (error)
1486 goto out_filestream_unmount;
1487
1488 root = igrab(VFS_I(mp->m_rootip));
1489 if (!root) {
1490 error = ENOENT;
1491 goto out_unmount;
1492 }
1493 if (is_bad_inode(root)) {
1494 error = EINVAL;
1495 goto out_unmount;
1496 }
1497 sb->s_root = d_make_root(root);
1498 if (!sb->s_root) {
1499 error = ENOMEM;
1500 goto out_unmount;
1501 }
1502
1503 return 0;
1504
1505 out_filestream_unmount:
1506 xfs_filestream_unmount(mp);
1507 out_free_sb:
1508 xfs_freesb(mp);
1509 out_destroy_counters:
1510 xfs_icsb_destroy_counters(mp);
1511out_destroy_workqueues:
1512 xfs_destroy_mount_workqueues(mp);
1513 out_close_devices:
1514 xfs_close_devices(mp);
1515 out_free_fsname:
1516 xfs_free_fsname(mp);
1517 kfree(mp);
1518 out:
1519 return -error;
1520
1521 out_unmount:
1522 xfs_filestream_unmount(mp);
1523 xfs_unmountfs(mp);
1524 goto out_free_sb;
1525}
1526
1527STATIC struct dentry *
1528xfs_fs_mount(
1529 struct file_system_type *fs_type,
1530 int flags,
1531 const char *dev_name,
1532 void *data)
1533{
1534 return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super);
1535}
1536
1537static int
1538xfs_fs_nr_cached_objects(
1539 struct super_block *sb)
1540{
1541 return xfs_reclaim_inodes_count(XFS_M(sb));
1542}
1543
1544static void
1545xfs_fs_free_cached_objects(
1546 struct super_block *sb,
1547 int nr_to_scan)
1548{
1549 xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan);
1550}
1551
1552static const struct super_operations xfs_super_operations = {
1553 .alloc_inode = xfs_fs_alloc_inode,
1554 .destroy_inode = xfs_fs_destroy_inode,
1555 .evict_inode = xfs_fs_evict_inode,
1556 .drop_inode = xfs_fs_drop_inode,
1557 .put_super = xfs_fs_put_super,
1558 .sync_fs = xfs_fs_sync_fs,
1559 .freeze_fs = xfs_fs_freeze,
1560 .unfreeze_fs = xfs_fs_unfreeze,
1561 .statfs = xfs_fs_statfs,
1562 .remount_fs = xfs_fs_remount,
1563 .show_options = xfs_fs_show_options,
1564 .nr_cached_objects = xfs_fs_nr_cached_objects,
1565 .free_cached_objects = xfs_fs_free_cached_objects,
1566};
1567
1568static struct file_system_type xfs_fs_type = {
1569 .owner = THIS_MODULE,
1570 .name = "xfs",
1571 .mount = xfs_fs_mount,
1572 .kill_sb = kill_block_super,
1573 .fs_flags = FS_REQUIRES_DEV,
1574};
1575MODULE_ALIAS_FS("xfs");
1576
1577STATIC int __init
1578xfs_init_zones(void)
1579{
1580
1581 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
1582 if (!xfs_ioend_zone)
1583 goto out;
1584
1585 xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
1586 xfs_ioend_zone);
1587 if (!xfs_ioend_pool)
1588 goto out_destroy_ioend_zone;
1589
1590 xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t),
1591 "xfs_log_ticket");
1592 if (!xfs_log_ticket_zone)
1593 goto out_destroy_ioend_pool;
1594
1595 xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
1596 "xfs_bmap_free_item");
1597 if (!xfs_bmap_free_item_zone)
1598 goto out_destroy_log_ticket_zone;
1599
1600 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
1601 "xfs_btree_cur");
1602 if (!xfs_btree_cur_zone)
1603 goto out_destroy_bmap_free_item_zone;
1604
1605 xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t),
1606 "xfs_da_state");
1607 if (!xfs_da_state_zone)
1608 goto out_destroy_btree_cur_zone;
1609
1610 xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
1611 if (!xfs_ifork_zone)
1612 goto out_destroy_da_state_zone;
1613
1614 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
1615 if (!xfs_trans_zone)
1616 goto out_destroy_ifork_zone;
1617
1618 xfs_log_item_desc_zone =
1619 kmem_zone_init(sizeof(struct xfs_log_item_desc),
1620 "xfs_log_item_desc");
1621 if (!xfs_log_item_desc_zone)
1622 goto out_destroy_trans_zone;
1623
1624
1625
1626
1627
1628
1629 xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item),
1630 "xfs_buf_item");
1631 if (!xfs_buf_item_zone)
1632 goto out_destroy_log_item_desc_zone;
1633
1634 xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) +
1635 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
1636 sizeof(xfs_extent_t))), "xfs_efd_item");
1637 if (!xfs_efd_zone)
1638 goto out_destroy_buf_item_zone;
1639
1640 xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) +
1641 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
1642 sizeof(xfs_extent_t))), "xfs_efi_item");
1643 if (!xfs_efi_zone)
1644 goto out_destroy_efd_zone;
1645
1646 xfs_inode_zone =
1647 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
1648 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD,
1649 xfs_fs_inode_init_once);
1650 if (!xfs_inode_zone)
1651 goto out_destroy_efi_zone;
1652
1653 xfs_ili_zone =
1654 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
1655 KM_ZONE_SPREAD, NULL);
1656 if (!xfs_ili_zone)
1657 goto out_destroy_inode_zone;
1658
1659 return 0;
1660
1661 out_destroy_inode_zone:
1662 kmem_zone_destroy(xfs_inode_zone);
1663 out_destroy_efi_zone:
1664 kmem_zone_destroy(xfs_efi_zone);
1665 out_destroy_efd_zone:
1666 kmem_zone_destroy(xfs_efd_zone);
1667 out_destroy_buf_item_zone:
1668 kmem_zone_destroy(xfs_buf_item_zone);
1669 out_destroy_log_item_desc_zone:
1670 kmem_zone_destroy(xfs_log_item_desc_zone);
1671 out_destroy_trans_zone:
1672 kmem_zone_destroy(xfs_trans_zone);
1673 out_destroy_ifork_zone:
1674 kmem_zone_destroy(xfs_ifork_zone);
1675 out_destroy_da_state_zone:
1676 kmem_zone_destroy(xfs_da_state_zone);
1677 out_destroy_btree_cur_zone:
1678 kmem_zone_destroy(xfs_btree_cur_zone);
1679 out_destroy_bmap_free_item_zone:
1680 kmem_zone_destroy(xfs_bmap_free_item_zone);
1681 out_destroy_log_ticket_zone:
1682 kmem_zone_destroy(xfs_log_ticket_zone);
1683 out_destroy_ioend_pool:
1684 mempool_destroy(xfs_ioend_pool);
1685 out_destroy_ioend_zone:
1686 kmem_zone_destroy(xfs_ioend_zone);
1687 out:
1688 return -ENOMEM;
1689}
1690
1691STATIC void
1692xfs_destroy_zones(void)
1693{
1694
1695
1696
1697
1698 rcu_barrier();
1699 kmem_zone_destroy(xfs_ili_zone);
1700 kmem_zone_destroy(xfs_inode_zone);
1701 kmem_zone_destroy(xfs_efi_zone);
1702 kmem_zone_destroy(xfs_efd_zone);
1703 kmem_zone_destroy(xfs_buf_item_zone);
1704 kmem_zone_destroy(xfs_log_item_desc_zone);
1705 kmem_zone_destroy(xfs_trans_zone);
1706 kmem_zone_destroy(xfs_ifork_zone);
1707 kmem_zone_destroy(xfs_da_state_zone);
1708 kmem_zone_destroy(xfs_btree_cur_zone);
1709 kmem_zone_destroy(xfs_bmap_free_item_zone);
1710 kmem_zone_destroy(xfs_log_ticket_zone);
1711 mempool_destroy(xfs_ioend_pool);
1712 kmem_zone_destroy(xfs_ioend_zone);
1713
1714}
1715
1716STATIC int __init
1717xfs_init_workqueues(void)
1718{
1719
1720
1721
1722
1723
1724
1725 xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0);
1726 if (!xfs_alloc_wq)
1727 return -ENOMEM;
1728
1729 return 0;
1730}
1731
1732STATIC void
1733xfs_destroy_workqueues(void)
1734{
1735 destroy_workqueue(xfs_alloc_wq);
1736}
1737
1738STATIC int __init
1739init_xfs_fs(void)
1740{
1741 int error;
1742
1743 printk(KERN_INFO XFS_VERSION_STRING " with "
1744 XFS_BUILD_OPTIONS " enabled\n");
1745
1746 xfs_dir_startup();
1747
1748 error = xfs_init_zones();
1749 if (error)
1750 goto out;
1751
1752 error = xfs_init_workqueues();
1753 if (error)
1754 goto out_destroy_zones;
1755
1756 error = xfs_mru_cache_init();
1757 if (error)
1758 goto out_destroy_wq;
1759
1760 error = xfs_filestream_init();
1761 if (error)
1762 goto out_mru_cache_uninit;
1763
1764 error = xfs_buf_init();
1765 if (error)
1766 goto out_filestream_uninit;
1767
1768 error = xfs_init_procfs();
1769 if (error)
1770 goto out_buf_terminate;
1771
1772 error = xfs_sysctl_register();
1773 if (error)
1774 goto out_cleanup_procfs;
1775
1776 error = xfs_qm_init();
1777 if (error)
1778 goto out_sysctl_unregister;
1779
1780 error = register_filesystem(&xfs_fs_type);
1781 if (error)
1782 goto out_qm_exit;
1783 return 0;
1784
1785 out_qm_exit:
1786 xfs_qm_exit();
1787 out_sysctl_unregister:
1788 xfs_sysctl_unregister();
1789 out_cleanup_procfs:
1790 xfs_cleanup_procfs();
1791 out_buf_terminate:
1792 xfs_buf_terminate();
1793 out_filestream_uninit:
1794 xfs_filestream_uninit();
1795 out_mru_cache_uninit:
1796 xfs_mru_cache_uninit();
1797 out_destroy_wq:
1798 xfs_destroy_workqueues();
1799 out_destroy_zones:
1800 xfs_destroy_zones();
1801 out:
1802 return error;
1803}
1804
1805STATIC void __exit
1806exit_xfs_fs(void)
1807{
1808 xfs_qm_exit();
1809 unregister_filesystem(&xfs_fs_type);
1810 xfs_sysctl_unregister();
1811 xfs_cleanup_procfs();
1812 xfs_buf_terminate();
1813 xfs_filestream_uninit();
1814 xfs_mru_cache_uninit();
1815 xfs_destroy_workqueues();
1816 xfs_destroy_zones();
1817}
1818
1819module_init(init_xfs_fs);
1820module_exit(exit_xfs_fs);
1821
1822MODULE_AUTHOR("Silicon Graphics, Inc.");
1823MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
1824MODULE_LICENSE("GPL");
1825