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[XFRM]: Add sorting interface for state and template.
[hh.org.git] / fs / xfs / xfs_fsops.c
blobc064e72ada9e2beaa32f5d7d43525901de91efa0
1 /*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_types.h"
21 #include "xfs_bit.h"
22 #include "xfs_inum.h"
23 #include "xfs_log.h"
24 #include "xfs_trans.h"
25 #include "xfs_sb.h"
26 #include "xfs_ag.h"
27 #include "xfs_dir2.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_mount.h"
30 #include "xfs_bmap_btree.h"
31 #include "xfs_alloc_btree.h"
32 #include "xfs_ialloc_btree.h"
33 #include "xfs_dir2_sf.h"
34 #include "xfs_attr_sf.h"
35 #include "xfs_dinode.h"
36 #include "xfs_inode.h"
37 #include "xfs_inode_item.h"
38 #include "xfs_btree.h"
39 #include "xfs_error.h"
40 #include "xfs_alloc.h"
41 #include "xfs_ialloc.h"
42 #include "xfs_fsops.h"
43 #include "xfs_itable.h"
44 #include "xfs_trans_space.h"
45 #include "xfs_rtalloc.h"
46 #include "xfs_rw.h"
47
48 /*
49 * File system operations
50 */
51
52 int
53 xfs_fs_geometry(
54 xfs_mount_t *mp,
55 xfs_fsop_geom_t *geo,
56 int new_version)
57 {
58 geo->blocksize = mp->m_sb.sb_blocksize;
59 geo->rtextsize = mp->m_sb.sb_rextsize;
60 geo->agblocks = mp->m_sb.sb_agblocks;
61 geo->agcount = mp->m_sb.sb_agcount;
62 geo->logblocks = mp->m_sb.sb_logblocks;
63 geo->sectsize = mp->m_sb.sb_sectsize;
64 geo->inodesize = mp->m_sb.sb_inodesize;
65 geo->imaxpct = mp->m_sb.sb_imax_pct;
66 geo->datablocks = mp->m_sb.sb_dblocks;
67 geo->rtblocks = mp->m_sb.sb_rblocks;
68 geo->rtextents = mp->m_sb.sb_rextents;
69 geo->logstart = mp->m_sb.sb_logstart;
70 ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid));
71 memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid));
72 if (new_version >= 2) {
73 geo->sunit = mp->m_sb.sb_unit;
74 geo->swidth = mp->m_sb.sb_width;
75 }
76 if (new_version >= 3) {
77 geo->version = XFS_FSOP_GEOM_VERSION;
78 geo->flags =
79 (XFS_SB_VERSION_HASATTR(&mp->m_sb) ?
80 XFS_FSOP_GEOM_FLAGS_ATTR : 0) |
81 (XFS_SB_VERSION_HASNLINK(&mp->m_sb) ?
82 XFS_FSOP_GEOM_FLAGS_NLINK : 0) |
83 (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) ?
84 XFS_FSOP_GEOM_FLAGS_QUOTA : 0) |
85 (XFS_SB_VERSION_HASALIGN(&mp->m_sb) ?
86 XFS_FSOP_GEOM_FLAGS_IALIGN : 0) |
87 (XFS_SB_VERSION_HASDALIGN(&mp->m_sb) ?
88 XFS_FSOP_GEOM_FLAGS_DALIGN : 0) |
89 (XFS_SB_VERSION_HASSHARED(&mp->m_sb) ?
90 XFS_FSOP_GEOM_FLAGS_SHARED : 0) |
91 (XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) ?
92 XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) |
93 (XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ?
94 XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) |
95 (XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
96 XFS_FSOP_GEOM_FLAGS_SECTOR : 0) |
97 (XFS_SB_VERSION_HASATTR2(&mp->m_sb) ?
98 XFS_FSOP_GEOM_FLAGS_ATTR2 : 0);
99 geo->logsectsize = XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
100 mp->m_sb.sb_logsectsize : BBSIZE;
101 geo->rtsectsize = mp->m_sb.sb_blocksize;
102 geo->dirblocksize = mp->m_dirblksize;
103 }
104 if (new_version >= 4) {
105 geo->flags |=
106 (XFS_SB_VERSION_HASLOGV2(&mp->m_sb) ?
107 XFS_FSOP_GEOM_FLAGS_LOGV2 : 0);
108 geo->logsunit = mp->m_sb.sb_logsunit;
109 }
110 return 0;
111 }
112
113 static int
114 xfs_growfs_data_private(
115 xfs_mount_t *mp, /* mount point for filesystem */
116 xfs_growfs_data_t *in) /* growfs data input struct */
117 {
118 xfs_agf_t *agf;
119 xfs_agi_t *agi;
120 xfs_agnumber_t agno;
121 xfs_extlen_t agsize;
122 xfs_extlen_t tmpsize;
123 xfs_alloc_rec_t *arec;
124 xfs_btree_sblock_t *block;
125 xfs_buf_t *bp;
126 int bucket;
127 int dpct;
128 int error;
129 xfs_agnumber_t nagcount;
130 xfs_agnumber_t nagimax = 0;
131 xfs_rfsblock_t nb, nb_mod;
132 xfs_rfsblock_t new;
133 xfs_rfsblock_t nfree;
134 xfs_agnumber_t oagcount;
135 int pct;
136 xfs_sb_t *sbp;
137 xfs_trans_t *tp;
138
139 nb = in->newblocks;
140 pct = in->imaxpct;
141 if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100)
142 return XFS_ERROR(EINVAL);
143 dpct = pct - mp->m_sb.sb_imax_pct;
144 error = xfs_read_buf(mp, mp->m_ddev_targp,
145 XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),
146 XFS_FSS_TO_BB(mp, 1), 0, &bp);
147 if (error)
148 return error;
149 ASSERT(bp);
150 xfs_buf_relse(bp);
151
152 new = nb; /* use new as a temporary here */
153 nb_mod = do_div(new, mp->m_sb.sb_agblocks);
154 nagcount = new + (nb_mod != 0);
155 if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
156 nagcount--;
157 nb = nagcount * mp->m_sb.sb_agblocks;
158 if (nb < mp->m_sb.sb_dblocks)
159 return XFS_ERROR(EINVAL);
160 }
161 new = nb - mp->m_sb.sb_dblocks;
162 oagcount = mp->m_sb.sb_agcount;
163 if (nagcount > oagcount) {
164 down_write(&mp->m_peraglock);
165 mp->m_perag = kmem_realloc(mp->m_perag,
166 sizeof(xfs_perag_t) * nagcount,
167 sizeof(xfs_perag_t) * oagcount,
168 KM_SLEEP);
169 memset(&mp->m_perag[oagcount], 0,
170 (nagcount - oagcount) * sizeof(xfs_perag_t));
171 mp->m_flags |= XFS_MOUNT_32BITINODES;
172 nagimax = xfs_initialize_perag(XFS_MTOVFS(mp), mp, nagcount);
173 up_write(&mp->m_peraglock);
174 }
175 tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS);
176 if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp),
177 XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) {
178 xfs_trans_cancel(tp, 0);
179 return error;
180 }
181
182 nfree = 0;
183 for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
184 /*
185 * AG freelist header block
186 */
187 bp = xfs_buf_get(mp->m_ddev_targp,
188 XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
189 XFS_FSS_TO_BB(mp, 1), 0);
190 agf = XFS_BUF_TO_AGF(bp);
191 memset(agf, 0, mp->m_sb.sb_sectsize);
192 agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
193 agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
194 agf->agf_seqno = cpu_to_be32(agno);
195 if (agno == nagcount - 1)
196 agsize =
197 nb -
198 (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks);
199 else
200 agsize = mp->m_sb.sb_agblocks;
201 agf->agf_length = cpu_to_be32(agsize);
202 agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp));
203 agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp));
204 agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1);
205 agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1);
206 agf->agf_flfirst = 0;
207 agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1);
208 agf->agf_flcount = 0;
209 tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp);
210 agf->agf_freeblks = cpu_to_be32(tmpsize);
211 agf->agf_longest = cpu_to_be32(tmpsize);
212 error = xfs_bwrite(mp, bp);
213 if (error) {
214 goto error0;
215 }
216 /*
217 * AG inode header block
218 */
219 bp = xfs_buf_get(mp->m_ddev_targp,
220 XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
221 XFS_FSS_TO_BB(mp, 1), 0);
222 agi = XFS_BUF_TO_AGI(bp);
223 memset(agi, 0, mp->m_sb.sb_sectsize);
224 agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
225 agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
226 agi->agi_seqno = cpu_to_be32(agno);
227 agi->agi_length = cpu_to_be32(agsize);
228 agi->agi_count = 0;
229 agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp));
230 agi->agi_level = cpu_to_be32(1);
231 agi->agi_freecount = 0;
232 agi->agi_newino = cpu_to_be32(NULLAGINO);
233 agi->agi_dirino = cpu_to_be32(NULLAGINO);
234 for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
235 agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
236 error = xfs_bwrite(mp, bp);
237 if (error) {
238 goto error0;
239 }
240 /*
241 * BNO btree root block
242 */
243 bp = xfs_buf_get(mp->m_ddev_targp,
244 XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
245 BTOBB(mp->m_sb.sb_blocksize), 0);
246 block = XFS_BUF_TO_SBLOCK(bp);
247 memset(block, 0, mp->m_sb.sb_blocksize);
248 block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC);
249 block->bb_level = 0;
250 block->bb_numrecs = cpu_to_be16(1);
251 block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
252 block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
253 arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
254 block, 1, mp->m_alloc_mxr[0]);
255 arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
256 arec->ar_blockcount = cpu_to_be32(
257 agsize - be32_to_cpu(arec->ar_startblock));
258 error = xfs_bwrite(mp, bp);
259 if (error) {
260 goto error0;
261 }
262 /*
263 * CNT btree root block
264 */
265 bp = xfs_buf_get(mp->m_ddev_targp,
266 XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
267 BTOBB(mp->m_sb.sb_blocksize), 0);
268 block = XFS_BUF_TO_SBLOCK(bp);
269 memset(block, 0, mp->m_sb.sb_blocksize);
270 block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC);
271 block->bb_level = 0;
272 block->bb_numrecs = cpu_to_be16(1);
273 block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
274 block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
275 arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
276 block, 1, mp->m_alloc_mxr[0]);
277 arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
278 arec->ar_blockcount = cpu_to_be32(
279 agsize - be32_to_cpu(arec->ar_startblock));
280 nfree += be32_to_cpu(arec->ar_blockcount);
281 error = xfs_bwrite(mp, bp);
282 if (error) {
283 goto error0;
284 }
285 /*
286 * INO btree root block
287 */
288 bp = xfs_buf_get(mp->m_ddev_targp,
289 XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
290 BTOBB(mp->m_sb.sb_blocksize), 0);
291 block = XFS_BUF_TO_SBLOCK(bp);
292 memset(block, 0, mp->m_sb.sb_blocksize);
293 block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC);
294 block->bb_level = 0;
295 block->bb_numrecs = 0;
296 block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
297 block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
298 error = xfs_bwrite(mp, bp);
299 if (error) {
300 goto error0;
301 }
302 }
303 xfs_trans_agblocks_delta(tp, nfree);
304 /*
305 * There are new blocks in the old last a.g.
306 */
307 if (new) {
308 /*
309 * Change the agi length.
310 */
311 error = xfs_ialloc_read_agi(mp, tp, agno, &bp);
312 if (error) {
313 goto error0;
314 }
315 ASSERT(bp);
316 agi = XFS_BUF_TO_AGI(bp);
317 be32_add(&agi->agi_length, new);
318 ASSERT(nagcount == oagcount ||
319 be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks);
320 xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
321 /*
322 * Change agf length.
323 */
324 error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp);
325 if (error) {
326 goto error0;
327 }
328 ASSERT(bp);
329 agf = XFS_BUF_TO_AGF(bp);
330 be32_add(&agf->agf_length, new);
331 ASSERT(be32_to_cpu(agf->agf_length) ==
332 be32_to_cpu(agi->agi_length));
333 /*
334 * Free the new space.
335 */
336 error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno,
337 be32_to_cpu(agf->agf_length) - new), new);
338 if (error) {
339 goto error0;
340 }
341 }
342 if (nagcount > oagcount)
343 xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount);
344 if (nb > mp->m_sb.sb_dblocks)
345 xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS,
346 nb - mp->m_sb.sb_dblocks);
347 if (nfree)
348 xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree);
349 if (dpct)
350 xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
351 error = xfs_trans_commit(tp, 0, NULL);
352 if (error) {
353 return error;
354 }
355 /* New allocation groups fully initialized, so update mount struct */
356 if (nagimax)
357 mp->m_maxagi = nagimax;
358 if (mp->m_sb.sb_imax_pct) {
359 __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct;
360 do_div(icount, 100);
361 mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
362 } else
363 mp->m_maxicount = 0;
364 for (agno = 1; agno < nagcount; agno++) {
365 error = xfs_read_buf(mp, mp->m_ddev_targp,
366 XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
367 XFS_FSS_TO_BB(mp, 1), 0, &bp);
368 if (error) {
369 xfs_fs_cmn_err(CE_WARN, mp,
370 "error %d reading secondary superblock for ag %d",
371 error, agno);
372 break;
373 }
374 sbp = XFS_BUF_TO_SBP(bp);
375 xfs_xlatesb(sbp, &mp->m_sb, -1, XFS_SB_ALL_BITS);
376 /*
377 * If we get an error writing out the alternate superblocks,
378 * just issue a warning and continue. The real work is
379 * already done and committed.
380 */
381 if (!(error = xfs_bwrite(mp, bp))) {
382 continue;
383 } else {
384 xfs_fs_cmn_err(CE_WARN, mp,
385 "write error %d updating secondary superblock for ag %d",
386 error, agno);
387 break; /* no point in continuing */
388 }
389 }
390 return 0;
391
392 error0:
393 xfs_trans_cancel(tp, XFS_TRANS_ABORT);
394 return error;
395 }
396
397 static int
398 xfs_growfs_log_private(
399 xfs_mount_t *mp, /* mount point for filesystem */
400 xfs_growfs_log_t *in) /* growfs log input struct */
401 {
402 xfs_extlen_t nb;
403
404 nb = in->newblocks;
405 if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES))
406 return XFS_ERROR(EINVAL);
407 if (nb == mp->m_sb.sb_logblocks &&
408 in->isint == (mp->m_sb.sb_logstart != 0))
409 return XFS_ERROR(EINVAL);
410 /*
411 * Moving the log is hard, need new interfaces to sync
412 * the log first, hold off all activity while moving it.
413 * Can have shorter or longer log in the same space,
414 * or transform internal to external log or vice versa.
415 */
416 return XFS_ERROR(ENOSYS);
417 }
418
419 /*
420 * protected versions of growfs function acquire and release locks on the mount
421 * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG,
422 * XFS_IOC_FSGROWFSRT
423 */
424
425
426 int
427 xfs_growfs_data(
428 xfs_mount_t *mp,
429 xfs_growfs_data_t *in)
430 {
431 int error;
432 if (!cpsema(&mp->m_growlock))
433 return XFS_ERROR(EWOULDBLOCK);
434 error = xfs_growfs_data_private(mp, in);
435 vsema(&mp->m_growlock);
436 return error;
437 }
438
439 int
440 xfs_growfs_log(
441 xfs_mount_t *mp,
442 xfs_growfs_log_t *in)
443 {
444 int error;
445 if (!cpsema(&mp->m_growlock))
446 return XFS_ERROR(EWOULDBLOCK);
447 error = xfs_growfs_log_private(mp, in);
448 vsema(&mp->m_growlock);
449 return error;
450 }
451
452 /*
453 * exported through ioctl XFS_IOC_FSCOUNTS
454 */
455
456 int
457 xfs_fs_counts(
458 xfs_mount_t *mp,
459 xfs_fsop_counts_t *cnt)
460 {
461 unsigned long s;
462
463 xfs_icsb_sync_counters_lazy(mp);
464 s = XFS_SB_LOCK(mp);
465 cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
466 cnt->freertx = mp->m_sb.sb_frextents;
467 cnt->freeino = mp->m_sb.sb_ifree;
468 cnt->allocino = mp->m_sb.sb_icount;
469 XFS_SB_UNLOCK(mp, s);
470 return 0;
471 }
472
473 /*
474 * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS
475 *
476 * xfs_reserve_blocks is called to set m_resblks
477 * in the in-core mount table. The number of unused reserved blocks
478 * is kept in m_resblks_avail.
479 *
480 * Reserve the requested number of blocks if available. Otherwise return
481 * as many as possible to satisfy the request. The actual number
482 * reserved are returned in outval
483 *
484 * A null inval pointer indicates that only the current reserved blocks
485 * available should be returned no settings are changed.
486 */
487
488 int
489 xfs_reserve_blocks(
490 xfs_mount_t *mp,
491 __uint64_t *inval,
492 xfs_fsop_resblks_t *outval)
493 {
494 __int64_t lcounter, delta;
495 __uint64_t request;
496 unsigned long s;
497
498 /* If inval is null, report current values and return */
499
500 if (inval == (__uint64_t *)NULL) {
501 outval->resblks = mp->m_resblks;
502 outval->resblks_avail = mp->m_resblks_avail;
503 return 0;
504 }
505
506 request = *inval;
507 s = XFS_SB_LOCK(mp);
508
509 /*
510 * If our previous reservation was larger than the current value,
511 * then move any unused blocks back to the free pool.
512 */
513
514 if (mp->m_resblks > request) {
515 lcounter = mp->m_resblks_avail - request;
516 if (lcounter > 0) { /* release unused blocks */
517 mp->m_sb.sb_fdblocks += lcounter;
518 mp->m_resblks_avail -= lcounter;
519 }
520 mp->m_resblks = request;
521 } else {
522 __int64_t free;
523
524 free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
525 delta = request - mp->m_resblks;
526 lcounter = free - delta;
527 if (lcounter < 0) {
528 /* We can't satisfy the request, just get what we can */
529 mp->m_resblks += free;
530 mp->m_resblks_avail += free;
531 mp->m_sb.sb_fdblocks = XFS_ALLOC_SET_ASIDE(mp);
532 } else {
533 mp->m_sb.sb_fdblocks =
534 lcounter + XFS_ALLOC_SET_ASIDE(mp);
535 mp->m_resblks = request;
536 mp->m_resblks_avail += delta;
537 }
538 }
539
540 outval->resblks = mp->m_resblks;
541 outval->resblks_avail = mp->m_resblks_avail;
542 XFS_SB_UNLOCK(mp, s);
543 return 0;
544 }
545
546 void
547 xfs_fs_log_dummy(
548 xfs_mount_t *mp)
549 {
550 xfs_trans_t *tp;
551 xfs_inode_t *ip;
552
553 tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
554 if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) {
555 xfs_trans_cancel(tp, 0);
556 return;
557 }
558
559 ip = mp->m_rootip;
560 xfs_ilock(ip, XFS_ILOCK_EXCL);
561
562 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
563 xfs_trans_ihold(tp, ip);
564 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
565 xfs_trans_set_sync(tp);
566 xfs_trans_commit(tp, 0, NULL);
567
568 xfs_iunlock(ip, XFS_ILOCK_EXCL);
569 }
570
571 int
572 xfs_fs_goingdown(
573 xfs_mount_t *mp,
574 __uint32_t inflags)
575 {
576 switch (inflags) {
577 case XFS_FSOP_GOING_FLAGS_DEFAULT: {
578 struct bhv_vfs *vfsp = XFS_MTOVFS(mp);
579 struct super_block *sb = freeze_bdev(vfsp->vfs_super->s_bdev);
580
581 if (sb && !IS_ERR(sb)) {
582 xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
583 thaw_bdev(sb->s_bdev, sb);
584 }
585
586 break;
587 }
588 case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
589 xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
590 break;
591 case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH:
592 xfs_force_shutdown(mp,
593 SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR);
594 break;
595 default:
596 return XFS_ERROR(EINVAL);
597 }
598
599 return 0;
600 }
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