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[XFS] fix mount option parsing in remount
[deliverable/linux.git] / fs / xfs / linux-2.6 / xfs_super.c
CommitLineData
1da177e4 1/*
a805bad5 2 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
7b718769 3 * All Rights Reserved.
1da177e4 4 *
7b718769
NS		 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
1da177e4
LT		 7 * published by the Free Software Foundation.
8 *
7b718769
NS		 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.
1da177e4 13 *
7b718769
NS		 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
1da177e4 17 */
1da177e4 18#include "xfs.h"
a844f451 19#include "xfs_bit.h"
1da177e4
LT		 20#include "xfs_log.h"
21#include "xfs_clnt.h"
a844f451 22#include "xfs_inum.h"
1da177e4
LT		 23#include "xfs_trans.h"
24#include "xfs_sb.h"
a844f451 25#include "xfs_ag.h"
1da177e4
LT		 26#include "xfs_dir2.h"
27#include "xfs_alloc.h"
28#include "xfs_dmapi.h"
29#include "xfs_quota.h"
30#include "xfs_mount.h"
1da177e4 31#include "xfs_bmap_btree.h"
a844f451 32#include "xfs_alloc_btree.h"
1da177e4 33#include "xfs_ialloc_btree.h"
1da177e4 34#include "xfs_dir2_sf.h"
a844f451 35#include "xfs_attr_sf.h"
1da177e4
LT		 36#include "xfs_dinode.h"
37#include "xfs_inode.h"
a844f451
NS		 38#include "xfs_btree.h"
39#include "xfs_ialloc.h"
1da177e4 40#include "xfs_bmap.h"
1da177e4
LT		 41#include "xfs_rtalloc.h"
42#include "xfs_error.h"
43#include "xfs_itable.h"
9909c4aa 44#include "xfs_fsops.h"
1da177e4
LT		 45#include "xfs_rw.h"
46#include "xfs_acl.h"
1da177e4
LT		 47#include "xfs_attr.h"
48#include "xfs_buf_item.h"
49#include "xfs_utils.h"
739bfb2a 50#include "xfs_vnodeops.h"
745f6919 51#include "xfs_vfsops.h"
1da177e4 52#include "xfs_version.h"
a67d7c5f 53#include "xfs_log_priv.h"
249a8c11 54#include "xfs_trans_priv.h"
48b62a1a 55#include "xfs_filestream.h"
9f8868ff
CH		 56#include "xfs_da_btree.h"
57#include "xfs_dir2_trace.h"
58#include "xfs_extfree_item.h"
59#include "xfs_mru_cache.h"
60#include "xfs_inode_item.h"
1da177e4
LT		 61
62#include <linux/namei.h>
63#include <linux/init.h>
64#include <linux/mount.h>
0829c360 65#include <linux/mempool.h>
1da177e4 66#include <linux/writeback.h>
4df08c52 67#include <linux/kthread.h>
7dfb7103 68#include <linux/freezer.h>
62a877e3 69#include <linux/parser.h>
1da177e4 70
7989cb8e
DC		 71static struct quotactl_ops xfs_quotactl_operations;
72static struct super_operations xfs_super_operations;
73static kmem_zone_t *xfs_vnode_zone;
74static kmem_zone_t *xfs_ioend_zone;
0829c360 75mempool_t *xfs_ioend_pool;
1da177e4
LT		 76
77STATIC struct xfs_mount_args *
78xfs_args_allocate(
764d1f89
NS		 79 struct super_block *sb,
80 int silent)
1da177e4
LT		 81{
82 struct xfs_mount_args *args;
83
bdd907ba
CH		 84 args = kzalloc(sizeof(struct xfs_mount_args), GFP_KERNEL);
85 if (!args)
86 return NULL;
87
1da177e4
LT		 88 args->logbufs = args->logbufsize = -1;
89 strncpy(args->fsname, sb->s_id, MAXNAMELEN);
90
91 /* Copy the already-parsed mount(2) flags we're interested in */
1da177e4
LT		 92 if (sb->s_flags & MS_DIRSYNC)
93 args->flags |= XFSMNT_DIRSYNC;
94 if (sb->s_flags & MS_SYNCHRONOUS)
95 args->flags |= XFSMNT_WSYNC;
764d1f89
NS		 96 if (silent)
97 args->flags |= XFSMNT_QUIET;
1da177e4
LT		 98 args->flags |= XFSMNT_32BITINODES;
99
100 return args;
101}
102
a67d7c5f
DC		 103#define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
104#define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
105#define MNTOPT_LOGDEV "logdev" /* log device */
106#define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
107#define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
108#define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
109#define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
110#define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
111#define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
112#define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
113#define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
114#define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
115#define MNTOPT_MTPT "mtpt" /* filesystem mount point */
116#define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
117#define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
118#define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
119#define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
120#define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
121#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
122#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
123 * unwritten extent conversion */
124#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
125#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
126#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
127#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
128#define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
129#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
130#define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
131 * in stat(). */
132#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
133#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
134#define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */
135#define MNTOPT_QUOTA "quota" /* disk quotas (user) */
136#define MNTOPT_NOQUOTA "noquota" /* no quotas */
137#define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */
138#define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */
139#define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */
140#define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */
141#define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */
142#define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */
143#define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
144#define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
145#define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
146#define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */
147#define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */
148#define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */
149#define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */
150
62a877e3
CH		 151/*
152 * Table driven mount option parser.
153 *
154 * Currently only used for remount, but it will be used for mount
155 * in the future, too.
156 */
157enum {
158 Opt_barrier, Opt_nobarrier, Opt_err
159};
160
161static match_table_t tokens = {
162 {Opt_barrier, "barrier"},
163 {Opt_nobarrier, "nobarrier"},
164 {Opt_err, NULL}
165};
166
167
a67d7c5f
DC		 168STATIC unsigned long
169suffix_strtoul(char *s, char **endp, unsigned int base)
170{
171 int last, shift_left_factor = 0;
172 char *value = s;
173
174 last = strlen(value) - 1;
175 if (value[last] == 'K' || value[last] == 'k') {
176 shift_left_factor = 10;
177 value[last] = '\0';
178 }
179 if (value[last] == 'M' || value[last] == 'm') {
180 shift_left_factor = 20;
181 value[last] = '\0';
182 }
183 if (value[last] == 'G' || value[last] == 'g') {
184 shift_left_factor = 30;
185 value[last] = '\0';
186 }
187
188 return simple_strtoul((const char *)s, endp, base) << shift_left_factor;
189}
190
191STATIC int
192xfs_parseargs(
193 struct xfs_mount *mp,
194 char *options,
195 struct xfs_mount_args *args,
196 int update)
197{
198 char *this_char, *value, *eov;
199 int dsunit, dswidth, vol_dsunit, vol_dswidth;
200 int iosize;
1bd960ee 201 int dmapi_implies_ikeep = 1;
a67d7c5f
DC		 202
203 args->flags |= XFSMNT_BARRIER;
204 args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
205
206 if (!options)
207 goto done;
208
209 iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
210
211 while ((this_char = strsep(&options, ",")) != NULL) {
212 if (!*this_char)
213 continue;
214 if ((value = strchr(this_char, '=')) != NULL)
215 *value++ = 0;
216
217 if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
218 if (!value || !*value) {
219 cmn_err(CE_WARN,
220 "XFS: %s option requires an argument",
221 this_char);
222 return EINVAL;
223 }
224 args->logbufs = simple_strtoul(value, &eov, 10);
225 } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
226 if (!value || !*value) {
227 cmn_err(CE_WARN,
228 "XFS: %s option requires an argument",
229 this_char);
230 return EINVAL;
231 }
232 args->logbufsize = suffix_strtoul(value, &eov, 10);
233 } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
234 if (!value || !*value) {
235 cmn_err(CE_WARN,
236 "XFS: %s option requires an argument",
237 this_char);
238 return EINVAL;
239 }
240 strncpy(args->logname, value, MAXNAMELEN);
241 } else if (!strcmp(this_char, MNTOPT_MTPT)) {
242 if (!value || !*value) {
243 cmn_err(CE_WARN,
244 "XFS: %s option requires an argument",
245 this_char);
246 return EINVAL;
247 }
248 strncpy(args->mtpt, value, MAXNAMELEN);
249 } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
250 if (!value || !*value) {
251 cmn_err(CE_WARN,
252 "XFS: %s option requires an argument",
253 this_char);
254 return EINVAL;
255 }
256 strncpy(args->rtname, value, MAXNAMELEN);
257 } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
258 if (!value || !*value) {
259 cmn_err(CE_WARN,
260 "XFS: %s option requires an argument",
261 this_char);
262 return EINVAL;
263 }
264 iosize = simple_strtoul(value, &eov, 10);
265 args->flags |= XFSMNT_IOSIZE;
266 args->iosizelog = (uint8_t) iosize;
267 } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
268 if (!value || !*value) {
269 cmn_err(CE_WARN,
270 "XFS: %s option requires an argument",
271 this_char);
272 return EINVAL;
273 }
274 iosize = suffix_strtoul(value, &eov, 10);
275 args->flags |= XFSMNT_IOSIZE;
276 args->iosizelog = ffs(iosize) - 1;
277 } else if (!strcmp(this_char, MNTOPT_GRPID) ||
278 !strcmp(this_char, MNTOPT_BSDGROUPS)) {
279 mp->m_flags |= XFS_MOUNT_GRPID;
280 } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
281 !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
282 mp->m_flags &= ~XFS_MOUNT_GRPID;
283 } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
284 args->flags |= XFSMNT_WSYNC;
285 } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
286 args->flags |= XFSMNT_OSYNCISOSYNC;
287 } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
288 args->flags |= XFSMNT_NORECOVERY;
289 } else if (!strcmp(this_char, MNTOPT_INO64)) {
290 args->flags |= XFSMNT_INO64;
291#if !XFS_BIG_INUMS
292 cmn_err(CE_WARN,
293 "XFS: %s option not allowed on this system",
294 this_char);
295 return EINVAL;
296#endif
297 } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
298 args->flags |= XFSMNT_NOALIGN;
299 } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
300 args->flags |= XFSMNT_SWALLOC;
301 } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
302 if (!value || !*value) {
303 cmn_err(CE_WARN,
304 "XFS: %s option requires an argument",
305 this_char);
306 return EINVAL;
307 }
308 dsunit = simple_strtoul(value, &eov, 10);
309 } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
310 if (!value || !*value) {
311 cmn_err(CE_WARN,
312 "XFS: %s option requires an argument",
313 this_char);
314 return EINVAL;
315 }
316 dswidth = simple_strtoul(value, &eov, 10);
317 } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
318 args->flags &= ~XFSMNT_32BITINODES;
319#if !XFS_BIG_INUMS
320 cmn_err(CE_WARN,
321 "XFS: %s option not allowed on this system",
322 this_char);
323 return EINVAL;
324#endif
325 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
326 args->flags |= XFSMNT_NOUUID;
327 } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
328 args->flags |= XFSMNT_BARRIER;
329 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
330 args->flags &= ~XFSMNT_BARRIER;
331 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
1bd960ee 332 args->flags |= XFSMNT_IKEEP;
a67d7c5f 333 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
1bd960ee
JJS		 334 dmapi_implies_ikeep = 0;
335 args->flags &= ~XFSMNT_IKEEP;
a67d7c5f
DC		 336 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
337 args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
338 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
339 args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
340 } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
341 args->flags |= XFSMNT_ATTR2;
342 } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
343 args->flags &= ~XFSMNT_ATTR2;
7c12f296 344 args->flags |= XFSMNT_NOATTR2;
a67d7c5f
DC		 345 } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) {
346 args->flags2 |= XFSMNT2_FILESTREAMS;
347 } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) {
348 args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA);
349 args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA);
350 } else if (!strcmp(this_char, MNTOPT_QUOTA) ||
351 !strcmp(this_char, MNTOPT_UQUOTA) ||
352 !strcmp(this_char, MNTOPT_USRQUOTA)) {
353 args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF;
354 } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) ||
355 !strcmp(this_char, MNTOPT_UQUOTANOENF)) {
356 args->flags |= XFSMNT_UQUOTA;
357 args->flags &= ~XFSMNT_UQUOTAENF;
358 } else if (!strcmp(this_char, MNTOPT_PQUOTA) ||
359 !strcmp(this_char, MNTOPT_PRJQUOTA)) {
360 args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF;
361 } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) {
362 args->flags |= XFSMNT_PQUOTA;
363 args->flags &= ~XFSMNT_PQUOTAENF;
364 } else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
365 !strcmp(this_char, MNTOPT_GRPQUOTA)) {
366 args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF;
367 } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) {
368 args->flags |= XFSMNT_GQUOTA;
369 args->flags &= ~XFSMNT_GQUOTAENF;
370 } else if (!strcmp(this_char, MNTOPT_DMAPI)) {
371 args->flags |= XFSMNT_DMAPI;
372 } else if (!strcmp(this_char, MNTOPT_XDSM)) {
373 args->flags |= XFSMNT_DMAPI;
374 } else if (!strcmp(this_char, MNTOPT_DMI)) {
375 args->flags |= XFSMNT_DMAPI;
376 } else if (!strcmp(this_char, "ihashsize")) {
377 cmn_err(CE_WARN,
378 "XFS: ihashsize no longer used, option is deprecated.");
379 } else if (!strcmp(this_char, "osyncisdsync")) {
380 /* no-op, this is now the default */
381 cmn_err(CE_WARN,
382 "XFS: osyncisdsync is now the default, option is deprecated.");
383 } else if (!strcmp(this_char, "irixsgid")) {
384 cmn_err(CE_WARN,
385 "XFS: irixsgid is now a sysctl(2) variable, option is deprecated.");
386 } else {
387 cmn_err(CE_WARN,
388 "XFS: unknown mount option [%s].", this_char);
389 return EINVAL;
390 }
391 }
392
393 if (args->flags & XFSMNT_NORECOVERY) {
394 if ((mp->m_flags & XFS_MOUNT_RDONLY) == 0) {
395 cmn_err(CE_WARN,
396 "XFS: no-recovery mounts must be read-only.");
397 return EINVAL;
398 }
399 }
400
401 if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
402 cmn_err(CE_WARN,
403 "XFS: sunit and swidth options incompatible with the noalign option");
404 return EINVAL;
405 }
406
407 if ((args->flags & XFSMNT_GQUOTA) && (args->flags & XFSMNT_PQUOTA)) {
408 cmn_err(CE_WARN,
409 "XFS: cannot mount with both project and group quota");
410 return EINVAL;
411 }
412
413 if ((args->flags & XFSMNT_DMAPI) && *args->mtpt == '\0') {
414 printk("XFS: %s option needs the mount point option as well\n",
415 MNTOPT_DMAPI);
416 return EINVAL;
417 }
418
419 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
420 cmn_err(CE_WARN,
421 "XFS: sunit and swidth must be specified together");
422 return EINVAL;
423 }
424
425 if (dsunit && (dswidth % dsunit != 0)) {
426 cmn_err(CE_WARN,
427 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)",
428 dswidth, dsunit);
429 return EINVAL;
430 }
431
432 /*
433 * Applications using DMI filesystems often expect the
434 * inode generation number to be monotonically increasing.
435 * If we delete inode chunks we break this assumption, so
436 * keep unused inode chunks on disk for DMI filesystems
437 * until we come up with a better solution.
438 * Note that if "ikeep" or "noikeep" mount options are
439 * supplied, then they are honored.
440 */
1bd960ee
JJS		 441 if ((args->flags & XFSMNT_DMAPI) && dmapi_implies_ikeep)
442 args->flags |= XFSMNT_IKEEP;
a67d7c5f
DC		 443
444 if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
445 if (dsunit) {
446 args->sunit = dsunit;
447 args->flags |= XFSMNT_RETERR;
448 } else {
449 args->sunit = vol_dsunit;
450 }
451 dswidth ? (args->swidth = dswidth) :
452 (args->swidth = vol_dswidth);
453 } else {
454 args->sunit = args->swidth = 0;
455 }
456
457done:
458 if (args->flags & XFSMNT_32BITINODES)
459 mp->m_flags |= XFS_MOUNT_SMALL_INUMS;
460 if (args->flags2)
461 args->flags |= XFSMNT_FLAGS2;
462 return 0;
463}
464
465struct proc_xfs_info {
466 int flag;
467 char *str;
468};
469
470STATIC int
471xfs_showargs(
472 struct xfs_mount *mp,
473 struct seq_file *m)
474{
475 static struct proc_xfs_info xfs_info_set[] = {
476 /* the few simple ones we can get from the mount struct */
1bd960ee 477 { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP },
a67d7c5f
DC		 478 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
479 { XFS_MOUNT_INO64, "," MNTOPT_INO64 },
480 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
481 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
482 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
483 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
484 { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
485 { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 },
486 { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM },
487 { XFS_MOUNT_DMAPI, "," MNTOPT_DMAPI },
488 { XFS_MOUNT_GRPID, "," MNTOPT_GRPID },
489 { 0, NULL }
490 };
491 static struct proc_xfs_info xfs_info_unset[] = {
492 /* the few simple ones we can get from the mount struct */
a67d7c5f
DC		 493 { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO },
494 { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER },
495 { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE },
496 { 0, NULL }
497 };
498 struct proc_xfs_info *xfs_infop;
499
500 for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) {
501 if (mp->m_flags & xfs_infop->flag)
502 seq_puts(m, xfs_infop->str);
503 }
504 for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) {
505 if (!(mp->m_flags & xfs_infop->flag))
506 seq_puts(m, xfs_infop->str);
507 }
508
509 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
510 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
511 (int)(1 << mp->m_writeio_log) >> 10);
512
513 if (mp->m_logbufs > 0)
514 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
515 if (mp->m_logbsize > 0)
516 seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
517
518 if (mp->m_logname)
519 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
520 if (mp->m_rtname)
521 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
522
523 if (mp->m_dalign > 0)
524 seq_printf(m, "," MNTOPT_SUNIT "=%d",
525 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
526 if (mp->m_swidth > 0)
527 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
528 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
529
530 if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD))
531 seq_puts(m, "," MNTOPT_USRQUOTA);
532 else if (mp->m_qflags & XFS_UQUOTA_ACCT)
533 seq_puts(m, "," MNTOPT_UQUOTANOENF);
534
535 if (mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))
536 seq_puts(m, "," MNTOPT_PRJQUOTA);
537 else if (mp->m_qflags & XFS_PQUOTA_ACCT)
538 seq_puts(m, "," MNTOPT_PQUOTANOENF);
539
540 if (mp->m_qflags & (XFS_GQUOTA_ACCT|XFS_OQUOTA_ENFD))
541 seq_puts(m, "," MNTOPT_GRPQUOTA);
542 else if (mp->m_qflags & XFS_GQUOTA_ACCT)
543 seq_puts(m, "," MNTOPT_GQUOTANOENF);
544
545 if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
546 seq_puts(m, "," MNTOPT_NOQUOTA);
547
548 return 0;
549}
1da177e4
LT		 550__uint64_t
551xfs_max_file_offset(
552 unsigned int blockshift)
553{
554 unsigned int pagefactor = 1;
555 unsigned int bitshift = BITS_PER_LONG - 1;
556
557 /* Figure out maximum filesize, on Linux this can depend on
558 * the filesystem blocksize (on 32 bit platforms).
559 * __block_prepare_write does this in an [unsigned] long...
560 * page->index << (PAGE_CACHE_SHIFT - bbits)
561 * So, for page sized blocks (4K on 32 bit platforms),
562 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
563 * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
564 * but for smaller blocksizes it is less (bbits = log2 bsize).
565 * Note1: get_block_t takes a long (implicit cast from above)
566 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
567 * can optionally convert the [unsigned] long from above into
568 * an [unsigned] long long.
569 */
570
571#if BITS_PER_LONG == 32
572# if defined(CONFIG_LBD)
573 ASSERT(sizeof(sector_t) == 8);
574 pagefactor = PAGE_CACHE_SIZE;
575 bitshift = BITS_PER_LONG;
576# else
577 pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
578# endif
579#endif
580
581 return (((__uint64_t)pagefactor) << bitshift) - 1;
582}
583
7989cb8e 584STATIC_INLINE void
1da177e4
LT		 585xfs_set_inodeops(
586 struct inode *inode)
587{
0432dab2
CH		 588 switch (inode->i_mode & S_IFMT) {
589 case S_IFREG:
416c6d5b 590 inode->i_op = &xfs_inode_operations;
3562fd45 591 inode->i_fop = &xfs_file_operations;
e4c573bb 592 inode->i_mapping->a_ops = &xfs_address_space_operations;
0432dab2
CH		 593 break;
594 case S_IFDIR:
189f4bf2
BN		 595 if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
596 inode->i_op = &xfs_dir_ci_inode_operations;
597 else
598 inode->i_op = &xfs_dir_inode_operations;
3562fd45 599 inode->i_fop = &xfs_dir_file_operations;
0432dab2
CH		 600 break;
601 case S_IFLNK:
416c6d5b 602 inode->i_op = &xfs_symlink_inode_operations;
222096ae 603 if (!(XFS_I(inode)->i_df.if_flags & XFS_IFINLINE))
e4c573bb 604 inode->i_mapping->a_ops = &xfs_address_space_operations;
0432dab2
CH		 605 break;
606 default:
416c6d5b 607 inode->i_op = &xfs_inode_operations;
1da177e4 608 init_special_inode(inode, inode->i_mode, inode->i_rdev);
0432dab2 609 break;
1da177e4
LT		 610 }
611}
612
7989cb8e 613STATIC_INLINE void
1da177e4
LT		 614xfs_revalidate_inode(
615 xfs_mount_t *mp,
67fcaa73 616 bhv_vnode_t *vp,
1da177e4
LT		 617 xfs_inode_t *ip)
618{
ec86dc02 619 struct inode *inode = vn_to_inode(vp);
1da177e4 620
0432dab2 621 inode->i_mode = ip->i_d.di_mode;
1da177e4
LT		 622 inode->i_nlink = ip->i_d.di_nlink;
623 inode->i_uid = ip->i_d.di_uid;
624 inode->i_gid = ip->i_d.di_gid;
0432dab2
CH		 625
626 switch (inode->i_mode & S_IFMT) {
627 case S_IFBLK:
628 case S_IFCHR:
629 inode->i_rdev =
630 MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
631 sysv_minor(ip->i_df.if_u2.if_rdev));
632 break;
633 default:
1da177e4 634 inode->i_rdev = 0;
0432dab2 635 break;
1da177e4 636 }
0432dab2 637
1da177e4
LT		 638 inode->i_generation = ip->i_d.di_gen;
639 i_size_write(inode, ip->i_d.di_size);
1da177e4
LT		 640 inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
641 inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
642 inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
643 inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
644 inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
645 inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
646 if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
647 inode->i_flags |= S_IMMUTABLE;
648 else
649 inode->i_flags &= ~S_IMMUTABLE;
650 if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
651 inode->i_flags |= S_APPEND;
652 else
653 inode->i_flags &= ~S_APPEND;
654 if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
655 inode->i_flags |= S_SYNC;
656 else
657 inode->i_flags &= ~S_SYNC;
658 if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
659 inode->i_flags |= S_NOATIME;
660 else
661 inode->i_flags &= ~S_NOATIME;
b3aea4ed 662 xfs_iflags_clear(ip, XFS_IMODIFIED);
1da177e4
LT		 663}
664
665void
666xfs_initialize_vnode(
48c872a9 667 struct xfs_mount *mp,
67fcaa73 668 bhv_vnode_t *vp,
745f6919 669 struct xfs_inode *ip)
1da177e4 670{
ec86dc02 671 struct inode *inode = vn_to_inode(vp);
1da177e4 672
739bfb2a 673 if (!ip->i_vnode) {
739bfb2a
CH		 674 ip->i_vnode = vp;
675 inode->i_private = ip;
1da177e4
LT		 676 }
677
678 /*
679 * We need to set the ops vectors, and unlock the inode, but if
680 * we have been called during the new inode create process, it is
681 * too early to fill in the Linux inode. We will get called a
682 * second time once the inode is properly set up, and then we can
683 * finish our work.
684 */
745f6919 685 if (ip->i_d.di_mode != 0 && (inode->i_state & I_NEW)) {
48c872a9 686 xfs_revalidate_inode(mp, vp, ip);
1da177e4 687 xfs_set_inodeops(inode);
ec86dc02 688
7a18c386 689 xfs_iflags_clear(ip, XFS_INEW);
1da177e4
LT		 690 barrier();
691
692 unlock_new_inode(inode);
693 }
694}
695
696int
697xfs_blkdev_get(
698 xfs_mount_t *mp,
699 const char *name,
700 struct block_device **bdevp)
701{
702 int error = 0;
703
704 *bdevp = open_bdev_excl(name, 0, mp);
705 if (IS_ERR(*bdevp)) {
706 error = PTR_ERR(*bdevp);
707 printk("XFS: Invalid device [%s], error=%d\n", name, error);
708 }
709
710 return -error;
711}
712
713void
714xfs_blkdev_put(
715 struct block_device *bdev)
716{
717 if (bdev)
718 close_bdev_excl(bdev);
719}
720
f538d4da
CH		 721/*
722 * Try to write out the superblock using barriers.
723 */
724STATIC int
725xfs_barrier_test(
726 xfs_mount_t *mp)
727{
728 xfs_buf_t *sbp = xfs_getsb(mp, 0);
729 int error;
730
731 XFS_BUF_UNDONE(sbp);
732 XFS_BUF_UNREAD(sbp);
733 XFS_BUF_UNDELAYWRITE(sbp);
734 XFS_BUF_WRITE(sbp);
735 XFS_BUF_UNASYNC(sbp);
736 XFS_BUF_ORDERED(sbp);
737
738 xfsbdstrat(mp, sbp);
739 error = xfs_iowait(sbp);
740
741 /*
742 * Clear all the flags we set and possible error state in the
743 * buffer. We only did the write to try out whether barriers
744 * worked and shouldn't leave any traces in the superblock
745 * buffer.
746 */
747 XFS_BUF_DONE(sbp);
748 XFS_BUF_ERROR(sbp, 0);
749 XFS_BUF_UNORDERED(sbp);
750
751 xfs_buf_relse(sbp);
752 return error;
753}
754
755void
756xfs_mountfs_check_barriers(xfs_mount_t *mp)
757{
758 int error;
759
760 if (mp->m_logdev_targp != mp->m_ddev_targp) {
761 xfs_fs_cmn_err(CE_NOTE, mp,
762 "Disabling barriers, not supported with external log device");
763 mp->m_flags &= ~XFS_MOUNT_BARRIER;
4ef19ddd 764 return;
f538d4da
CH		 765 }
766
b2ea401b
NS		 767 if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
768 xfs_fs_cmn_err(CE_NOTE, mp,
769 "Disabling barriers, underlying device is readonly");
770 mp->m_flags &= ~XFS_MOUNT_BARRIER;
771 return;
772 }
773
f538d4da
CH		 774 error = xfs_barrier_test(mp);
775 if (error) {
776 xfs_fs_cmn_err(CE_NOTE, mp,
777 "Disabling barriers, trial barrier write failed");
778 mp->m_flags &= ~XFS_MOUNT_BARRIER;
4ef19ddd 779 return;
f538d4da
CH		 780 }
781}
782
783void
784xfs_blkdev_issue_flush(
785 xfs_buftarg_t *buftarg)
786{
ce8e922c 787 blkdev_issue_flush(buftarg->bt_bdev, NULL);
f538d4da 788}
1da177e4 789
19f354d4
CH		 790STATIC void
791xfs_close_devices(
792 struct xfs_mount *mp)
793{
794 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
795 xfs_free_buftarg(mp->m_logdev_targp);
796 xfs_blkdev_put(mp->m_logdev_targp->bt_bdev);
797 }
798 if (mp->m_rtdev_targp) {
799 xfs_free_buftarg(mp->m_rtdev_targp);
800 xfs_blkdev_put(mp->m_rtdev_targp->bt_bdev);
801 }
802 xfs_free_buftarg(mp->m_ddev_targp);
803}
804
805/*
806 * The file system configurations are:
807 * (1) device (partition) with data and internal log
808 * (2) logical volume with data and log subvolumes.
809 * (3) logical volume with data, log, and realtime subvolumes.
810 *
811 * We only have to handle opening the log and realtime volumes here if
812 * they are present. The data subvolume has already been opened by
813 * get_sb_bdev() and is stored in sb->s_bdev.
814 */
815STATIC int
816xfs_open_devices(
817 struct xfs_mount *mp,
818 struct xfs_mount_args *args)
819{
820 struct block_device *ddev = mp->m_super->s_bdev;
821 struct block_device *logdev = NULL, *rtdev = NULL;
822 int error;
823
824 /*
825 * Open real time and log devices - order is important.
826 */
827 if (args->logname[0]) {
828 error = xfs_blkdev_get(mp, args->logname, &logdev);
829 if (error)
830 goto out;
831 }
832
833 if (args->rtname[0]) {
834 error = xfs_blkdev_get(mp, args->rtname, &rtdev);
835 if (error)
836 goto out_close_logdev;
837
838 if (rtdev == ddev || rtdev == logdev) {
839 cmn_err(CE_WARN,
840 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
841 error = EINVAL;
842 goto out_close_rtdev;
843 }
844 }
845
846 /*
847 * Setup xfs_mount buffer target pointers
848 */
849 error = ENOMEM;
850 mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0);
851 if (!mp->m_ddev_targp)
852 goto out_close_rtdev;
853
854 if (rtdev) {
855 mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1);
856 if (!mp->m_rtdev_targp)
857 goto out_free_ddev_targ;
858 }
859
860 if (logdev && logdev != ddev) {
861 mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1);
862 if (!mp->m_logdev_targp)
863 goto out_free_rtdev_targ;
864 } else {
865 mp->m_logdev_targp = mp->m_ddev_targp;
866 }
867
868 return 0;
869
870 out_free_rtdev_targ:
871 if (mp->m_rtdev_targp)
872 xfs_free_buftarg(mp->m_rtdev_targp);
873 out_free_ddev_targ:
874 xfs_free_buftarg(mp->m_ddev_targp);
875 out_close_rtdev:
876 if (rtdev)
877 xfs_blkdev_put(rtdev);
878 out_close_logdev:
879 if (logdev && logdev != ddev)
880 xfs_blkdev_put(logdev);
881 out:
882 return error;
883}
884
e34b562c
CH		 885/*
886 * Setup xfs_mount buffer target pointers based on superblock
887 */
888STATIC int
889xfs_setup_devices(
890 struct xfs_mount *mp)
891{
892 int error;
19f354d4 893
e34b562c
CH		 894 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
895 mp->m_sb.sb_sectsize);
896 if (error)
897 return error;
898
899 if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
900 unsigned int log_sector_size = BBSIZE;
901
902 if (xfs_sb_version_hassector(&mp->m_sb))
903 log_sector_size = mp->m_sb.sb_logsectsize;
904 error = xfs_setsize_buftarg(mp->m_logdev_targp,
905 mp->m_sb.sb_blocksize,
906 log_sector_size);
907 if (error)
908 return error;
909 }
910 if (mp->m_rtdev_targp) {
911 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
912 mp->m_sb.sb_blocksize,
913 mp->m_sb.sb_sectsize);
914 if (error)
915 return error;
916 }
917
918 return 0;
919}
19f354d4 920
249a8c11
DC		 921/*
922 * XFS AIL push thread support
923 */
924void
925xfsaild_wakeup(
926 xfs_mount_t *mp,
927 xfs_lsn_t threshold_lsn)
928{
929 mp->m_ail.xa_target = threshold_lsn;
930 wake_up_process(mp->m_ail.xa_task);
931}
932
933int
934xfsaild(
935 void *data)
936{
937 xfs_mount_t *mp = (xfs_mount_t *)data;
938 xfs_lsn_t last_pushed_lsn = 0;
939 long tout = 0;
940
941 while (!kthread_should_stop()) {
942 if (tout)
943 schedule_timeout_interruptible(msecs_to_jiffies(tout));
944 tout = 1000;
945
946 /* swsusp */
947 try_to_freeze();
948
949 ASSERT(mp->m_log);
950 if (XFS_FORCED_SHUTDOWN(mp))
951 continue;
952
953 tout = xfsaild_push(mp, &last_pushed_lsn);
954 }
955
956 return 0;
957} /* xfsaild */
958
959int
960xfsaild_start(
961 xfs_mount_t *mp)
962{
963 mp->m_ail.xa_target = 0;
964 mp->m_ail.xa_task = kthread_run(xfsaild, mp, "xfsaild");
965 if (IS_ERR(mp->m_ail.xa_task))
966 return -PTR_ERR(mp->m_ail.xa_task);
967 return 0;
968}
969
970void
971xfsaild_stop(
972 xfs_mount_t *mp)
973{
974 kthread_stop(mp->m_ail.xa_task);
975}
976
977
978
1da177e4 979STATIC struct inode *
a50cd269 980xfs_fs_alloc_inode(
1da177e4
LT		 981 struct super_block *sb)
982{
67fcaa73 983 bhv_vnode_t *vp;
1da177e4 984
8758280f
NS		 985 vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP);
986 if (unlikely(!vp))
1da177e4 987 return NULL;
ec86dc02 988 return vn_to_inode(vp);
1da177e4
LT		 989}
990
991STATIC void
a50cd269 992xfs_fs_destroy_inode(
1da177e4
LT		 993 struct inode *inode)
994{
ec86dc02 995 kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode));
1da177e4
LT		 996}
997
998STATIC void
a50cd269 999xfs_fs_inode_init_once(
4ba9b9d0 1000 void *vnode)
1da177e4 1001{
a35afb83 1002 inode_init_once(vn_to_inode((bhv_vnode_t *)vnode));
1da177e4
LT		 1003}
1004
1da177e4
LT		 1005/*
1006 * Attempt to flush the inode, this will actually fail
1007 * if the inode is pinned, but we dirty the inode again
1008 * at the point when it is unpinned after a log write,
8758280f 1009 * since this is when the inode itself becomes flushable.
1da177e4
LT		 1010 */
1011STATIC int
a50cd269 1012xfs_fs_write_inode(
1da177e4
LT		 1013 struct inode *inode,
1014 int sync)
1015{
a3f74ffb
DC		 1016 int error = 0;
1017 int flags = 0;
1da177e4 1018
cf441eeb 1019 xfs_itrace_entry(XFS_I(inode));
739bfb2a
CH		 1020 if (sync) {
1021 filemap_fdatawait(inode->i_mapping);
1022 flags |= FLUSH_SYNC;
1da177e4 1023 }
739bfb2a 1024 error = xfs_inode_flush(XFS_I(inode), flags);
e893bffd
LM		 1025 /*
1026 * if we failed to write out the inode then mark
1027 * it dirty again so we'll try again later.
1028 */
1029 if (error)
1030 mark_inode_dirty_sync(inode);
739bfb2a 1031
1da177e4
LT		 1032 return -error;
1033}
1034
1035STATIC void
a50cd269 1036xfs_fs_clear_inode(
1da177e4
LT		 1037 struct inode *inode)
1038{
1543d79c 1039 xfs_inode_t *ip = XFS_I(inode);
56d433e4 1040
02ba71de 1041 /*
1543d79c 1042 * ip can be null when xfs_iget_core calls xfs_idestroy if we
02ba71de
CH		 1043 * find an inode with di_mode == 0 but without IGET_CREATE set.
1044 */
1543d79c 1045 if (ip) {
cf441eeb 1046 xfs_itrace_entry(ip);
1543d79c
CH		 1047 XFS_STATS_INC(vn_rele);
1048 XFS_STATS_INC(vn_remove);
1049 XFS_STATS_INC(vn_reclaim);
1050 XFS_STATS_DEC(vn_active);
1051
1052 xfs_inactive(ip);
1053 xfs_iflags_clear(ip, XFS_IMODIFIED);
1054 if (xfs_reclaim(ip))
34a622b2 1055 panic("%s: cannot reclaim 0x%p\n", __func__, inode);
b3aea4ed 1056 }
56d433e4 1057
739bfb2a 1058 ASSERT(XFS_I(inode) == NULL);
56d433e4 1059}
1da177e4
LT		 1060
1061/*
1062 * Enqueue a work item to be picked up by the vfs xfssyncd thread.
1063 * Doing this has two advantages:
1064 * - It saves on stack space, which is tight in certain situations
1065 * - It can be used (with care) as a mechanism to avoid deadlocks.
1066 * Flushing while allocating in a full filesystem requires both.
1067 */
1068STATIC void
1069xfs_syncd_queue_work(
74394496 1070 struct xfs_mount *mp,
1da177e4 1071 void *data,
74394496 1072 void (*syncer)(struct xfs_mount *, void *))
1da177e4 1073{
b83bd138 1074 struct bhv_vfs_sync_work *work;
1da177e4 1075
b83bd138 1076 work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP);
1da177e4
LT		 1077 INIT_LIST_HEAD(&work->w_list);
1078 work->w_syncer = syncer;
1079 work->w_data = data;
74394496
CH		 1080 work->w_mount = mp;
1081 spin_lock(&mp->m_sync_lock);
1082 list_add_tail(&work->w_list, &mp->m_sync_list);
1083 spin_unlock(&mp->m_sync_lock);
1084 wake_up_process(mp->m_sync_task);
1da177e4
LT		 1085}
1086
1087/*
1088 * Flush delayed allocate data, attempting to free up reserved space
1089 * from existing allocations. At this point a new allocation attempt
1090 * has failed with ENOSPC and we are in the process of scratching our
1091 * heads, looking about for more room...
1092 */
1093STATIC void
1094xfs_flush_inode_work(
74394496
CH		 1095 struct xfs_mount *mp,
1096 void *arg)
1da177e4 1097{
74394496
CH		 1098 struct inode *inode = arg;
1099 filemap_flush(inode->i_mapping);
1100 iput(inode);
1da177e4
LT		 1101}
1102
1103void
1104xfs_flush_inode(
1105 xfs_inode_t *ip)
1106{
74394496 1107 struct inode *inode = ip->i_vnode;
1da177e4
LT		 1108
1109 igrab(inode);
74394496 1110 xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inode_work);
041e0e3b 1111 delay(msecs_to_jiffies(500));
1da177e4
LT		 1112}
1113
1114/*
1115 * This is the "bigger hammer" version of xfs_flush_inode_work...
1116 * (IOW, "If at first you don't succeed, use a Bigger Hammer").
1117 */
1118STATIC void
1119xfs_flush_device_work(
74394496
CH		 1120 struct xfs_mount *mp,
1121 void *arg)
1da177e4 1122{
74394496 1123 struct inode *inode = arg;
b267ce99 1124 sync_blockdev(mp->m_super->s_bdev);
74394496 1125 iput(inode);
1da177e4
LT		 1126}
1127
1128void
1129xfs_flush_device(
1130 xfs_inode_t *ip)
1131{
ec86dc02 1132 struct inode *inode = vn_to_inode(XFS_ITOV(ip));
1da177e4
LT		 1133
1134 igrab(inode);
74394496 1135 xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_device_work);
041e0e3b 1136 delay(msecs_to_jiffies(500));
1da177e4
LT		 1137 xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
1138}
1139
1da177e4 1140STATIC void
74394496
CH		 1141xfs_sync_worker(
1142 struct xfs_mount *mp,
1da177e4
LT		 1143 void *unused)
1144{
1145 int error;
1146
74394496 1147 if (!(mp->m_flags & XFS_MOUNT_RDONLY))
7e20694d 1148 error = xfs_sync(mp, SYNC_FSDATA | SYNC_BDFLUSH | SYNC_ATTR);
74394496
CH		 1149 mp->m_sync_seq++;
1150 wake_up(&mp->m_wait_single_sync_task);
1da177e4
LT		 1151}
1152
1153STATIC int
1154xfssyncd(
1155 void *arg)
1156{
74394496 1157 struct xfs_mount *mp = arg;
1da177e4 1158 long timeleft;
b83bd138 1159 bhv_vfs_sync_work_t *work, *n;
4df08c52 1160 LIST_HEAD (tmp);
1da177e4 1161
83144186 1162 set_freezable();
041e0e3b 1163 timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
1da177e4 1164 for (;;) {
041e0e3b 1165 timeleft = schedule_timeout_interruptible(timeleft);
1da177e4 1166 /* swsusp */
3e1d1d28 1167 try_to_freeze();
74394496 1168 if (kthread_should_stop() && list_empty(&mp->m_sync_list))
1da177e4
LT		 1169 break;
1170
74394496 1171 spin_lock(&mp->m_sync_lock);
1da177e4
LT		 1172 /*
1173 * We can get woken by laptop mode, to do a sync -
1174 * that's the (only!) case where the list would be
1175 * empty with time remaining.
1176 */
74394496 1177 if (!timeleft || list_empty(&mp->m_sync_list)) {
1da177e4 1178 if (!timeleft)
041e0e3b
NA		 1179 timeleft = xfs_syncd_centisecs *
1180 msecs_to_jiffies(10);
74394496
CH		 1181 INIT_LIST_HEAD(&mp->m_sync_work.w_list);
1182 list_add_tail(&mp->m_sync_work.w_list,
1183 &mp->m_sync_list);
1da177e4 1184 }
74394496 1185 list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list)
1da177e4 1186 list_move(&work->w_list, &tmp);
74394496 1187 spin_unlock(&mp->m_sync_lock);
1da177e4
LT		 1188
1189 list_for_each_entry_safe(work, n, &tmp, w_list) {
74394496 1190 (*work->w_syncer)(mp, work->w_data);
1da177e4 1191 list_del(&work->w_list);
74394496 1192 if (work == &mp->m_sync_work)
1da177e4 1193 continue;
f0e2d93c 1194 kmem_free(work);
1da177e4
LT		 1195 }
1196 }
1197
1da177e4
LT		 1198 return 0;
1199}
1200
1da177e4 1201STATIC void
a50cd269 1202xfs_fs_put_super(
1da177e4
LT		 1203 struct super_block *sb)
1204{
745f6919 1205 struct xfs_mount *mp = XFS_M(sb);
e48ad316
CH		 1206 struct xfs_inode *rip = mp->m_rootip;
1207 int unmount_event_flags = 0;
1da177e4
LT		 1208 int error;
1209
74394496
CH		 1210 kthread_stop(mp->m_sync_task);
1211
745f6919 1212 xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI);
e48ad316
CH		 1213
1214#ifdef HAVE_DMAPI
1215 if (mp->m_flags & XFS_MOUNT_DMAPI) {
1216 unmount_event_flags =
1217 (mp->m_dmevmask & (1 << DM_EVENT_UNMOUNT)) ?
1218 0 : DM_FLAGS_UNWANTED;
1219 /*
1220 * Ignore error from dmapi here, first unmount is not allowed
1221 * to fail anyway, and second we wouldn't want to fail a
1222 * unmount because of dmapi.
1223 */
1224 XFS_SEND_PREUNMOUNT(mp, rip, DM_RIGHT_NULL, rip, DM_RIGHT_NULL,
1225 NULL, NULL, 0, 0, unmount_event_flags);
1226 }
1227#endif
1228
1229 /*
1230 * Blow away any referenced inode in the filestreams cache.
1231 * This can and will cause log traffic as inodes go inactive
1232 * here.
1233 */
1234 xfs_filestream_unmount(mp);
1235
1236 XFS_bflush(mp->m_ddev_targp);
1237 error = xfs_unmount_flush(mp, 0);
1238 WARN_ON(error);
1239
1240 IRELE(rip);
1241
1242 /*
1243 * If we're forcing a shutdown, typically because of a media error,
1244 * we want to make sure we invalidate dirty pages that belong to
1245 * referenced vnodes as well.
1246 */
1247 if (XFS_FORCED_SHUTDOWN(mp)) {
1248 error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE);
1249 ASSERT(error != EFSCORRUPTED);
1250 }
1251
1252 if (mp->m_flags & XFS_MOUNT_DMAPI) {
1253 XFS_SEND_UNMOUNT(mp, rip, DM_RIGHT_NULL, 0, 0,
1254 unmount_event_flags);
1255 }
1256
19f354d4 1257 xfs_unmountfs(mp);
c962fb79 1258 xfs_icsb_destroy_counters(mp);
19f354d4 1259 xfs_close_devices(mp);
e48ad316
CH		 1260 xfs_qmops_put(mp);
1261 xfs_dmops_put(mp);
c962fb79 1262 kfree(mp);
1da177e4
LT		 1263}
1264
1265STATIC void
a50cd269 1266xfs_fs_write_super(
1da177e4
LT		 1267 struct super_block *sb)
1268{
b83bd138 1269 if (!(sb->s_flags & MS_RDONLY))
745f6919 1270 xfs_sync(XFS_M(sb), SYNC_FSDATA);
1da177e4
LT		 1271 sb->s_dirt = 0;
1272}
1273
1274STATIC int
a50cd269 1275xfs_fs_sync_super(
1da177e4
LT		 1276 struct super_block *sb,
1277 int wait)
1278{
745f6919 1279 struct xfs_mount *mp = XFS_M(sb);
b83bd138
NS		 1280 int error;
1281 int flags;
1da177e4 1282
e893bffd
LM		 1283 /*
1284 * Treat a sync operation like a freeze. This is to work
1285 * around a race in sync_inodes() which works in two phases
1286 * - an asynchronous flush, which can write out an inode
1287 * without waiting for file size updates to complete, and a
1288 * synchronous flush, which wont do anything because the
1289 * async flush removed the inode's dirty flag. Also
1290 * sync_inodes() will not see any files that just have
1291 * outstanding transactions to be flushed because we don't
1292 * dirty the Linux inode until after the transaction I/O
1293 * completes.
1294 */
1295 if (wait || unlikely(sb->s_frozen == SB_FREEZE_WRITE)) {
2823945f
DC		 1296 /*
1297 * First stage of freeze - no more writers will make progress
1298 * now we are here, so we flush delwri and delalloc buffers
1299 * here, then wait for all I/O to complete. Data is frozen at
1300 * that point. Metadata is not frozen, transactions can still
1301 * occur here so don't bother flushing the buftarg (i.e
1302 * SYNC_QUIESCE) because it'll just get dirty again.
1303 */
516b2e7c 1304 flags = SYNC_DATA_QUIESCE;
2823945f 1305 } else
e893bffd 1306 flags = SYNC_FSDATA;
1da177e4 1307
745f6919 1308 error = xfs_sync(mp, flags);
1da177e4
LT		 1309 sb->s_dirt = 0;
1310
1311 if (unlikely(laptop_mode)) {
74394496 1312 int prev_sync_seq = mp->m_sync_seq;
1da177e4
LT		 1313
1314 /*
1315 * The disk must be active because we're syncing.
1316 * We schedule xfssyncd now (now that the disk is
1317 * active) instead of later (when it might not be).
1318 */
74394496 1319 wake_up_process(mp->m_sync_task);
1da177e4
LT		 1320 /*
1321 * We have to wait for the sync iteration to complete.
1322 * If we don't, the disk activity caused by the sync
1323 * will come after the sync is completed, and that
1324 * triggers another sync from laptop mode.
1325 */
74394496
CH		 1326 wait_event(mp->m_wait_single_sync_task,
1327 mp->m_sync_seq != prev_sync_seq);
1da177e4
LT		 1328 }
1329
1330 return -error;
1331}
1332
1333STATIC int
a50cd269 1334xfs_fs_statfs(
726c3342 1335 struct dentry *dentry,
1da177e4
LT		 1336 struct kstatfs *statp)
1337{
4ca488eb
CH		 1338 struct xfs_mount *mp = XFS_M(dentry->d_sb);
1339 xfs_sb_t *sbp = &mp->m_sb;
1340 __uint64_t fakeinos, id;
1341 xfs_extlen_t lsize;
1342
1343 statp->f_type = XFS_SB_MAGIC;
1344 statp->f_namelen = MAXNAMELEN - 1;
1345
1346 id = huge_encode_dev(mp->m_ddev_targp->bt_dev);
1347 statp->f_fsid.val[0] = (u32)id;
1348 statp->f_fsid.val[1] = (u32)(id >> 32);
1349
d4d90b57 1350 xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
4ca488eb
CH		 1351
1352 spin_lock(&mp->m_sb_lock);
1353 statp->f_bsize = sbp->sb_blocksize;
1354 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
1355 statp->f_blocks = sbp->sb_dblocks - lsize;
1356 statp->f_bfree = statp->f_bavail =
1357 sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
1358 fakeinos = statp->f_bfree << sbp->sb_inopblog;
1359#if XFS_BIG_INUMS
1360 fakeinos += mp->m_inoadd;
1361#endif
1362 statp->f_files =
1363 MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
1364 if (mp->m_maxicount)
1365#if XFS_BIG_INUMS
1366 if (!mp->m_inoadd)
1367#endif
1368 statp->f_files = min_t(typeof(statp->f_files),
1369 statp->f_files,
1370 mp->m_maxicount);
1371 statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
1372 spin_unlock(&mp->m_sb_lock);
1373
1374 XFS_QM_DQSTATVFS(XFS_I(dentry->d_inode), statp);
1375 return 0;
1da177e4
LT		 1376}
1377
1378STATIC int
a50cd269 1379xfs_fs_remount(
1da177e4
LT		 1380 struct super_block *sb,
1381 int *flags,
1382 char *options)
1383{
745f6919 1384 struct xfs_mount *mp = XFS_M(sb);
62a877e3
CH		 1385 substring_t args[MAX_OPT_ARGS];
1386 char *p;
1da177e4 1387
62a877e3
CH		 1388 while ((p = strsep(&options, ",")) != NULL) {
1389 int token;
bdd907ba 1390
62a877e3
CH		 1391 if (!*p)
1392 continue;
48b62a1a 1393
62a877e3
CH		 1394 token = match_token(p, tokens, args);
1395 switch (token) {
1396 case Opt_barrier:
48b62a1a 1397 mp->m_flags |= XFS_MOUNT_BARRIER;
62a877e3
CH		 1398
1399 /*
1400 * Test if barriers are actually working if we can,
1401 * else delay this check until the filesystem is
1402 * marked writeable.
1403 */
1404 if (!(mp->m_flags & XFS_MOUNT_RDONLY))
1405 xfs_mountfs_check_barriers(mp);
1406 break;
1407 case Opt_nobarrier:
48b62a1a 1408 mp->m_flags &= ~XFS_MOUNT_BARRIER;
62a877e3
CH		 1409 break;
1410 default:
1411 printk(KERN_INFO
1412 "XFS: mount option \"%s\" not supported for remount\n", p);
1413 return -EINVAL;
48b62a1a 1414 }
62a877e3
CH		 1415 }
1416
1417 /* rw/ro -> rw */
1418 if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) {
1419 mp->m_flags &= ~XFS_MOUNT_RDONLY;
1420 if (mp->m_flags & XFS_MOUNT_BARRIER)
1421 xfs_mountfs_check_barriers(mp);
1422 }
1423
1424 /* rw -> ro */
1425 if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) {
48b62a1a
CH		 1426 xfs_filestream_flush(mp);
1427 xfs_sync(mp, SYNC_DATA_QUIESCE);
1428 xfs_attr_quiesce(mp);
1429 mp->m_flags |= XFS_MOUNT_RDONLY;
1430 }
1431
62a877e3 1432 return 0;
1da177e4
LT		 1433}
1434
9909c4aa
CH		 1435/*
1436 * Second stage of a freeze. The data is already frozen so we only
1437 * need to take care of themetadata. Once that's done write a dummy
1438 * record to dirty the log in case of a crash while frozen.
1439 */
1da177e4 1440STATIC void
a50cd269 1441xfs_fs_lockfs(
1da177e4
LT		 1442 struct super_block *sb)
1443{
9909c4aa
CH		 1444 struct xfs_mount *mp = XFS_M(sb);
1445
1446 xfs_attr_quiesce(mp);
1447 xfs_fs_log_dummy(mp);
1da177e4
LT		 1448}
1449
1450STATIC int
a50cd269 1451xfs_fs_show_options(
1da177e4
LT		 1452 struct seq_file *m,
1453 struct vfsmount *mnt)
1454{
745f6919 1455 return -xfs_showargs(XFS_M(mnt->mnt_sb), m);
1da177e4
LT		 1456}
1457
ee34807a 1458STATIC int
a50cd269 1459xfs_fs_quotasync(
ee34807a
NS		 1460 struct super_block *sb,
1461 int type)
1462{
b09cc771 1463 return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XQUOTASYNC, 0, NULL);
ee34807a
NS		 1464}
1465
1da177e4 1466STATIC int
a50cd269 1467xfs_fs_getxstate(
1da177e4
LT		 1468 struct super_block *sb,
1469 struct fs_quota_stat *fqs)
1470{
b09cc771 1471 return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XGETQSTAT, 0, (caddr_t)fqs);
1da177e4
LT		 1472}
1473
1474STATIC int
a50cd269 1475xfs_fs_setxstate(
1da177e4
LT		 1476 struct super_block *sb,
1477 unsigned int flags,
1478 int op)
1479{
b09cc771 1480 return -XFS_QM_QUOTACTL(XFS_M(sb), op, 0, (caddr_t)&flags);
1da177e4
LT		 1481}
1482
1483STATIC int
a50cd269 1484xfs_fs_getxquota(
1da177e4
LT		 1485 struct super_block *sb,
1486 int type,
1487 qid_t id,
1488 struct fs_disk_quota *fdq)
1489{
b09cc771 1490 return -XFS_QM_QUOTACTL(XFS_M(sb),
b83bd138
NS		 1491 (type == USRQUOTA) ? Q_XGETQUOTA :
1492 ((type == GRPQUOTA) ? Q_XGETGQUOTA :
1493 Q_XGETPQUOTA), id, (caddr_t)fdq);
1da177e4
LT		 1494}
1495
1496STATIC int
a50cd269 1497xfs_fs_setxquota(
1da177e4
LT		 1498 struct super_block *sb,
1499 int type,
1500 qid_t id,
1501 struct fs_disk_quota *fdq)
1502{
b09cc771 1503 return -XFS_QM_QUOTACTL(XFS_M(sb),
b83bd138
NS		 1504 (type == USRQUOTA) ? Q_XSETQLIM :
1505 ((type == GRPQUOTA) ? Q_XSETGQLIM :
1506 Q_XSETPQLIM), id, (caddr_t)fdq);
1da177e4
LT		 1507}
1508
f8f15e42
CH		 1509/*
1510 * This function fills in xfs_mount_t fields based on mount args.
1511 * Note: the superblock has _not_ yet been read in.
1512 */
1513STATIC int
1514xfs_start_flags(
1515 struct xfs_mount_args *ap,
1516 struct xfs_mount *mp)
1517{
1518 /* Values are in BBs */
1519 if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
1520 /*
1521 * At this point the superblock has not been read
1522 * in, therefore we do not know the block size.
1523 * Before the mount call ends we will convert
1524 * these to FSBs.
1525 */
1526 mp->m_dalign = ap->sunit;
1527 mp->m_swidth = ap->swidth;
1528 }
1529
1530 if (ap->logbufs != -1 &&
1531 ap->logbufs != 0 &&
1532 (ap->logbufs < XLOG_MIN_ICLOGS ||
1533 ap->logbufs > XLOG_MAX_ICLOGS)) {
1534 cmn_err(CE_WARN,
1535 "XFS: invalid logbufs value: %d [not %d-%d]",
1536 ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
1537 return XFS_ERROR(EINVAL);
1538 }
1539 mp->m_logbufs = ap->logbufs;
1540 if (ap->logbufsize != -1 &&
1541 ap->logbufsize != 0 &&
1542 (ap->logbufsize < XLOG_MIN_RECORD_BSIZE ||
1543 ap->logbufsize > XLOG_MAX_RECORD_BSIZE ||
1544 !is_power_of_2(ap->logbufsize))) {
1545 cmn_err(CE_WARN,
1546 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
1547 ap->logbufsize);
1548 return XFS_ERROR(EINVAL);
1549 }
1550 mp->m_logbsize = ap->logbufsize;
1551 mp->m_fsname_len = strlen(ap->fsname) + 1;
1552 mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
1553 strcpy(mp->m_fsname, ap->fsname);
1554 if (ap->rtname[0]) {
1555 mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP);
1556 strcpy(mp->m_rtname, ap->rtname);
1557 }
1558 if (ap->logname[0]) {
1559 mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP);
1560 strcpy(mp->m_logname, ap->logname);
1561 }
1562
1563 if (ap->flags & XFSMNT_WSYNC)
1564 mp->m_flags |= XFS_MOUNT_WSYNC;
1565#if XFS_BIG_INUMS
1566 if (ap->flags & XFSMNT_INO64) {
1567 mp->m_flags |= XFS_MOUNT_INO64;
1568 mp->m_inoadd = XFS_INO64_OFFSET;
1569 }
1570#endif
1571 if (ap->flags & XFSMNT_RETERR)
1572 mp->m_flags |= XFS_MOUNT_RETERR;
1573 if (ap->flags & XFSMNT_NOALIGN)
1574 mp->m_flags |= XFS_MOUNT_NOALIGN;
1575 if (ap->flags & XFSMNT_SWALLOC)
1576 mp->m_flags |= XFS_MOUNT_SWALLOC;
1577 if (ap->flags & XFSMNT_OSYNCISOSYNC)
1578 mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
1579 if (ap->flags & XFSMNT_32BITINODES)
1580 mp->m_flags |= XFS_MOUNT_32BITINODES;
1581
1582 if (ap->flags & XFSMNT_IOSIZE) {
1583 if (ap->iosizelog > XFS_MAX_IO_LOG ||
1584 ap->iosizelog < XFS_MIN_IO_LOG) {
1585 cmn_err(CE_WARN,
1586 "XFS: invalid log iosize: %d [not %d-%d]",
1587 ap->iosizelog, XFS_MIN_IO_LOG,
1588 XFS_MAX_IO_LOG);
1589 return XFS_ERROR(EINVAL);
1590 }
1591
1592 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
1593 mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
1594 }
1595
1596 if (ap->flags & XFSMNT_IKEEP)
1597 mp->m_flags |= XFS_MOUNT_IKEEP;
1598 if (ap->flags & XFSMNT_DIRSYNC)
1599 mp->m_flags |= XFS_MOUNT_DIRSYNC;
1600 if (ap->flags & XFSMNT_ATTR2)
1601 mp->m_flags |= XFS_MOUNT_ATTR2;
1602 if (ap->flags & XFSMNT_NOATTR2)
1603 mp->m_flags |= XFS_MOUNT_NOATTR2;
1604
1605 if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
1606 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
1607
1608 /*
1609 * no recovery flag requires a read-only mount
1610 */
1611 if (ap->flags & XFSMNT_NORECOVERY) {
1612 if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
1613 cmn_err(CE_WARN,
1614 "XFS: tried to mount a FS read-write without recovery!");
1615 return XFS_ERROR(EINVAL);
1616 }
1617 mp->m_flags |= XFS_MOUNT_NORECOVERY;
1618 }
1619
1620 if (ap->flags & XFSMNT_NOUUID)
1621 mp->m_flags |= XFS_MOUNT_NOUUID;
1622 if (ap->flags & XFSMNT_BARRIER)
1623 mp->m_flags |= XFS_MOUNT_BARRIER;
1624 else
1625 mp->m_flags &= ~XFS_MOUNT_BARRIER;
1626
1627 if (ap->flags2 & XFSMNT2_FILESTREAMS)
1628 mp->m_flags |= XFS_MOUNT_FILESTREAMS;
1629
1630 if (ap->flags & XFSMNT_DMAPI)
1631 mp->m_flags |= XFS_MOUNT_DMAPI;
1632 return 0;
1633}
1634
1635/*
1636 * This function fills in xfs_mount_t fields based on mount args.
1637 * Note: the superblock _has_ now been read in.
1638 */
1639STATIC int
1640xfs_finish_flags(
1641 struct xfs_mount_args *ap,
1642 struct xfs_mount *mp)
1643{
1644 int ronly = (mp->m_flags & XFS_MOUNT_RDONLY);
1645
1646 /* Fail a mount where the logbuf is smaller then the log stripe */
1647 if (xfs_sb_version_haslogv2(&mp->m_sb)) {
1648 if ((ap->logbufsize <= 0) &&
1649 (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) {
1650 mp->m_logbsize = mp->m_sb.sb_logsunit;
1651 } else if (ap->logbufsize > 0 &&
1652 ap->logbufsize < mp->m_sb.sb_logsunit) {
1653 cmn_err(CE_WARN,
1654 "XFS: logbuf size must be greater than or equal to log stripe size");
1655 return XFS_ERROR(EINVAL);
1656 }
1657 } else {
1658 /* Fail a mount if the logbuf is larger than 32K */
1659 if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
1660 cmn_err(CE_WARN,
1661 "XFS: logbuf size for version 1 logs must be 16K or 32K");
1662 return XFS_ERROR(EINVAL);
1663 }
1664 }
1665
1666 /*
1667 * mkfs'ed attr2 will turn on attr2 mount unless explicitly
1668 * told by noattr2 to turn it off
1669 */
1670 if (xfs_sb_version_hasattr2(&mp->m_sb) &&
1671 !(ap->flags & XFSMNT_NOATTR2))
1672 mp->m_flags |= XFS_MOUNT_ATTR2;
1673
1674 /*
1675 * prohibit r/w mounts of read-only filesystems
1676 */
1677 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
1678 cmn_err(CE_WARN,
1679 "XFS: cannot mount a read-only filesystem as read-write");
1680 return XFS_ERROR(EROFS);
1681 }
1682
1683 /*
1684 * check for shared mount.
1685 */
1686 if (ap->flags & XFSMNT_SHARED) {
1687 if (!xfs_sb_version_hasshared(&mp->m_sb))
1688 return XFS_ERROR(EINVAL);
1689
1690 /*
1691 * For IRIX 6.5, shared mounts must have the shared
1692 * version bit set, have the persistent readonly
1693 * field set, must be version 0 and can only be mounted
1694 * read-only.
1695 */
1696 if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
1697 (mp->m_sb.sb_shared_vn != 0))
1698 return XFS_ERROR(EINVAL);
1699
1700 mp->m_flags |= XFS_MOUNT_SHARED;
1701
1702 /*
1703 * Shared XFS V0 can't deal with DMI. Return EINVAL.
1704 */
1705 if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
1706 return XFS_ERROR(EINVAL);
1707 }
1708
1709 if (ap->flags & XFSMNT_UQUOTA) {
1710 mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE);
1711 if (ap->flags & XFSMNT_UQUOTAENF)
1712 mp->m_qflags |= XFS_UQUOTA_ENFD;
1713 }
1714
1715 if (ap->flags & XFSMNT_GQUOTA) {
1716 mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
1717 if (ap->flags & XFSMNT_GQUOTAENF)
1718 mp->m_qflags |= XFS_OQUOTA_ENFD;
1719 } else if (ap->flags & XFSMNT_PQUOTA) {
1720 mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
1721 if (ap->flags & XFSMNT_PQUOTAENF)
1722 mp->m_qflags |= XFS_OQUOTA_ENFD;
1723 }
1724
1725 return 0;
1726}
1727
1da177e4 1728STATIC int
a50cd269 1729xfs_fs_fill_super(
1da177e4
LT		 1730 struct super_block *sb,
1731 void *data,
1732 int silent)
1733{
f3dcc13f 1734 struct inode *root;
745f6919 1735 struct xfs_mount *mp = NULL;
bdd907ba 1736 struct xfs_mount_args *args;
c962fb79 1737 int flags = 0, error = ENOMEM;
1da177e4 1738
bdd907ba
CH		 1739 args = xfs_args_allocate(sb, silent);
1740 if (!args)
1741 return -ENOMEM;
1742
c962fb79
CH		 1743 mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL);
1744 if (!mp)
1745 goto out_free_args;
1da177e4 1746
c962fb79
CH		 1747 spin_lock_init(&mp->m_sb_lock);
1748 mutex_init(&mp->m_ilock);
1749 mutex_init(&mp->m_growlock);
1750 atomic_set(&mp->m_active_trans, 0);
74394496
CH		 1751 INIT_LIST_HEAD(&mp->m_sync_list);
1752 spin_lock_init(&mp->m_sync_lock);
1753 init_waitqueue_head(&mp->m_wait_single_sync_task);
1754
b267ce99
CH		 1755 mp->m_super = sb;
1756 sb->s_fs_info = mp;
1da177e4 1757
bd186aa9
CH		 1758 if (sb->s_flags & MS_RDONLY)
1759 mp->m_flags |= XFS_MOUNT_RDONLY;
1760
745f6919
CH		 1761 error = xfs_parseargs(mp, (char *)data, args, 0);
1762 if (error)
c962fb79 1763 goto out_free_mp;
1da177e4
LT		 1764
1765 sb_min_blocksize(sb, BBSIZE);
0ec58516 1766 sb->s_xattr = xfs_xattr_handlers;
a50cd269 1767 sb->s_export_op = &xfs_export_operations;
a50cd269
NS		 1768 sb->s_qcop = &xfs_quotactl_operations;
1769 sb->s_op = &xfs_super_operations;
1da177e4 1770
f8f15e42
CH		 1771 error = xfs_dmops_get(mp, args);
1772 if (error)
c962fb79 1773 goto out_free_mp;
f8f15e42 1774 error = xfs_qmops_get(mp, args);
745f6919 1775 if (error)
19f354d4 1776 goto out_put_dmops;
1da177e4 1777
f8f15e42
CH		 1778 if (args->flags & XFSMNT_QUIET)
1779 flags |= XFS_MFSI_QUIET;
1780
19f354d4
CH		 1781 error = xfs_open_devices(mp, args);
1782 if (error)
1783 goto out_put_qmops;
f8f15e42 1784
c962fb79
CH		 1785 if (xfs_icsb_init_counters(mp))
1786 mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB;
1787
f8f15e42
CH		 1788 /*
1789 * Setup flags based on mount(2) options and then the superblock
1790 */
1791 error = xfs_start_flags(args, mp);
1792 if (error)
95db4e21 1793 goto out_destroy_counters;
f8f15e42
CH		 1794 error = xfs_readsb(mp, flags);
1795 if (error)
95db4e21 1796 goto out_destroy_counters;
f8f15e42
CH		 1797 error = xfs_finish_flags(args, mp);
1798 if (error)
effa2eda 1799 goto out_free_sb;
f8f15e42 1800
e34b562c 1801 error = xfs_setup_devices(mp);
19f354d4 1802 if (error)
effa2eda 1803 goto out_free_sb;
f8f15e42
CH		 1804
1805 if (mp->m_flags & XFS_MOUNT_BARRIER)
1806 xfs_mountfs_check_barriers(mp);
1807
1808 error = xfs_filestream_mount(mp);
1809 if (error)
effa2eda 1810 goto out_free_sb;
f8f15e42
CH		 1811
1812 error = xfs_mountfs(mp, flags);
1813 if (error)
120226c1 1814 goto out_filestream_unmount;
f8f15e42
CH		 1815
1816 XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, args->mtpt, args->fsname);
1817
1da177e4 1818 sb->s_dirt = 1;
4ca488eb
CH		 1819 sb->s_magic = XFS_SB_MAGIC;
1820 sb->s_blocksize = mp->m_sb.sb_blocksize;
1821 sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1;
1da177e4
LT		 1822 sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
1823 sb->s_time_gran = 1;
1824 set_posix_acl_flag(sb);
1825
f3dcc13f
CH		 1826 root = igrab(mp->m_rootip->i_vnode);
1827 if (!root) {
cbc89dcf 1828 error = ENOENT;
1da177e4 1829 goto fail_unmount;
cbc89dcf 1830 }
f3dcc13f
CH		 1831 if (is_bad_inode(root)) {
1832 error = EINVAL;
1da177e4
LT		 1833 goto fail_vnrele;
1834 }
f3dcc13f
CH		 1835 sb->s_root = d_alloc_root(root);
1836 if (!sb->s_root) {
1837 error = ENOMEM;
1da177e4
LT		 1838 goto fail_vnrele;
1839 }
74394496
CH		 1840
1841 mp->m_sync_work.w_syncer = xfs_sync_worker;
1842 mp->m_sync_work.w_mount = mp;
1843 mp->m_sync_task = kthread_run(xfssyncd, mp, "xfssyncd");
1844 if (IS_ERR(mp->m_sync_task)) {
1845 error = -PTR_ERR(mp->m_sync_task);
1da177e4 1846 goto fail_vnrele;
74394496
CH		 1847 }
1848
cf441eeb 1849 xfs_itrace_exit(XFS_I(sb->s_root->d_inode));
1da177e4 1850
bdd907ba 1851 kfree(args);
1da177e4
LT		 1852 return 0;
1853
120226c1
CH		 1854 out_filestream_unmount:
1855 xfs_filestream_unmount(mp);
effa2eda
CH		 1856 out_free_sb:
1857 xfs_freesb(mp);
c962fb79
CH		 1858 out_destroy_counters:
1859 xfs_icsb_destroy_counters(mp);
19f354d4
CH		 1860 xfs_close_devices(mp);
1861 out_put_qmops:
f8f15e42 1862 xfs_qmops_put(mp);
19f354d4 1863 out_put_dmops:
f8f15e42 1864 xfs_dmops_put(mp);
c962fb79
CH		 1865 out_free_mp:
1866 kfree(mp);
1867 out_free_args:
1868 kfree(args);
1869 return -error;
f8f15e42
CH		 1870
1871 fail_vnrele:
1da177e4
LT		 1872 if (sb->s_root) {
1873 dput(sb->s_root);
1874 sb->s_root = NULL;
1875 } else {
f3dcc13f 1876 iput(root);
1da177e4
LT		 1877 }
1878
f8f15e42 1879 fail_unmount:
e48ad316
CH		 1880 /*
1881 * Blow away any referenced inode in the filestreams cache.
1882 * This can and will cause log traffic as inodes go inactive
1883 * here.
1884 */
1885 xfs_filestream_unmount(mp);
1886
1887 XFS_bflush(mp->m_ddev_targp);
1888 error = xfs_unmount_flush(mp, 0);
1889 WARN_ON(error);
1890
1891 IRELE(mp->m_rootip);
1892
19f354d4 1893 xfs_unmountfs(mp);
c962fb79 1894 goto out_destroy_counters;
1da177e4
LT		 1895}
1896
454e2398 1897STATIC int
a50cd269 1898xfs_fs_get_sb(
1da177e4
LT		 1899 struct file_system_type *fs_type,
1900 int flags,
1901 const char *dev_name,
454e2398
DH		 1902 void *data,
1903 struct vfsmount *mnt)
1da177e4 1904{
454e2398
DH		 1905 return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super,
1906 mnt);
a50cd269
NS		 1907}
1908
7989cb8e 1909static struct super_operations xfs_super_operations = {
a50cd269
NS		 1910 .alloc_inode = xfs_fs_alloc_inode,
1911 .destroy_inode = xfs_fs_destroy_inode,
1912 .write_inode = xfs_fs_write_inode,
1913 .clear_inode = xfs_fs_clear_inode,
1914 .put_super = xfs_fs_put_super,
1915 .write_super = xfs_fs_write_super,
1916 .sync_fs = xfs_fs_sync_super,
1917 .write_super_lockfs = xfs_fs_lockfs,
1918 .statfs = xfs_fs_statfs,
1919 .remount_fs = xfs_fs_remount,
1920 .show_options = xfs_fs_show_options,
1da177e4
LT		 1921};
1922
7989cb8e 1923static struct quotactl_ops xfs_quotactl_operations = {
a50cd269
NS		 1924 .quota_sync = xfs_fs_quotasync,
1925 .get_xstate = xfs_fs_getxstate,
1926 .set_xstate = xfs_fs_setxstate,
1927 .get_xquota = xfs_fs_getxquota,
1928 .set_xquota = xfs_fs_setxquota,
1da177e4
LT		 1929};
1930
5085b607 1931static struct file_system_type xfs_fs_type = {
1da177e4
LT		 1932 .owner = THIS_MODULE,
1933 .name = "xfs",
a50cd269 1934 .get_sb = xfs_fs_get_sb,
1da177e4
LT		 1935 .kill_sb = kill_block_super,
1936 .fs_flags = FS_REQUIRES_DEV,
1937};
1938
9f8868ff
CH		 1939STATIC int __init
1940xfs_alloc_trace_bufs(void)
1941{
1942#ifdef XFS_ALLOC_TRACE
1943 xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_MAYFAIL);
1944 if (!xfs_alloc_trace_buf)
1945 goto out;
1946#endif
1947#ifdef XFS_BMAP_TRACE
1948 xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_MAYFAIL);
1949 if (!xfs_bmap_trace_buf)
1950 goto out_free_alloc_trace;
1951#endif
1952#ifdef XFS_BMBT_TRACE
1953 xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_MAYFAIL);
1954 if (!xfs_bmbt_trace_buf)
1955 goto out_free_bmap_trace;
1956#endif
1957#ifdef XFS_ATTR_TRACE
1958 xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_MAYFAIL);
1959 if (!xfs_attr_trace_buf)
1960 goto out_free_bmbt_trace;
1961#endif
1962#ifdef XFS_DIR2_TRACE
1963 xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_MAYFAIL);
1964 if (!xfs_dir2_trace_buf)
1965 goto out_free_attr_trace;
1966#endif
1967
1968 return 0;
1969
1970#ifdef XFS_DIR2_TRACE
1971 out_free_attr_trace:
1972#endif
1973#ifdef XFS_ATTR_TRACE
1974 ktrace_free(xfs_attr_trace_buf);
1975 out_free_bmbt_trace:
1976#endif
1977#ifdef XFS_BMBT_TRACE
1978 ktrace_free(xfs_bmbt_trace_buf);
1979 out_free_bmap_trace:
1980#endif
1981#ifdef XFS_BMAP_TRACE
1982 ktrace_free(xfs_bmap_trace_buf);
1983 out_free_alloc_trace:
1984#endif
1985#ifdef XFS_ALLOC_TRACE
1986 ktrace_free(xfs_alloc_trace_buf);
1987 out:
1988#endif
1989 return -ENOMEM;
1990}
1991
1992STATIC void
1993xfs_free_trace_bufs(void)
1994{
1995#ifdef XFS_DIR2_TRACE
1996 ktrace_free(xfs_dir2_trace_buf);
1997#endif
1998#ifdef XFS_ATTR_TRACE
1999 ktrace_free(xfs_attr_trace_buf);
2000#endif
2001#ifdef XFS_BMBT_TRACE
2002 ktrace_free(xfs_bmbt_trace_buf);
2003#endif
2004#ifdef XFS_BMAP_TRACE
2005 ktrace_free(xfs_bmap_trace_buf);
2006#endif
2007#ifdef XFS_ALLOC_TRACE
2008 ktrace_free(xfs_alloc_trace_buf);
2009#endif
2010}
2011
2012STATIC int __init
2013xfs_init_zones(void)
2014{
2015 xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode",
2016 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
2017 KM_ZONE_SPREAD,
2018 xfs_fs_inode_init_once);
2019 if (!xfs_vnode_zone)
2020 goto out;
2021
2022 xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend");
2023 if (!xfs_ioend_zone)
2024 goto out_destroy_vnode_zone;
2025
2026 xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE,
2027 xfs_ioend_zone);
2028 if (!xfs_ioend_pool)
2029 goto out_destroy_ioend_zone;
2030
2031 xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t),
2032 "xfs_log_ticket");
2033 if (!xfs_log_ticket_zone)
2034 goto out_destroy_ioend_pool;
2035
2036 xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
2037 "xfs_bmap_free_item");
2038 if (!xfs_bmap_free_item_zone)
2039 goto out_destroy_log_ticket_zone;
2040 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
2041 "xfs_btree_cur");
2042 if (!xfs_btree_cur_zone)
2043 goto out_destroy_bmap_free_item_zone;
2044
2045 xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t),
2046 "xfs_da_state");
2047 if (!xfs_da_state_zone)
2048 goto out_destroy_btree_cur_zone;
2049
2050 xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
2051 if (!xfs_dabuf_zone)
2052 goto out_destroy_da_state_zone;
2053
2054 xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
2055 if (!xfs_ifork_zone)
2056 goto out_destroy_dabuf_zone;
2057
2058 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
2059 if (!xfs_trans_zone)
2060 goto out_destroy_ifork_zone;
2061
2062 /*
2063 * The size of the zone allocated buf log item is the maximum
2064 * size possible under XFS. This wastes a little bit of memory,
2065 * but it is much faster.
2066 */
2067 xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) +
2068 (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
2069 NBWORD) * sizeof(int))), "xfs_buf_item");
2070 if (!xfs_buf_item_zone)
2071 goto out_destroy_trans_zone;
2072
2073 xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) +
2074 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
2075 sizeof(xfs_extent_t))), "xfs_efd_item");
2076 if (!xfs_efd_zone)
2077 goto out_destroy_buf_item_zone;
2078
2079 xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) +
2080 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
2081 sizeof(xfs_extent_t))), "xfs_efi_item");
2082 if (!xfs_efi_zone)
2083 goto out_destroy_efd_zone;
2084
2085 xfs_inode_zone =
2086 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
2087 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
2088 KM_ZONE_SPREAD, NULL);
2089 if (!xfs_inode_zone)
2090 goto out_destroy_efi_zone;
2091
2092 xfs_ili_zone =
2093 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
2094 KM_ZONE_SPREAD, NULL);
2095 if (!xfs_ili_zone)
2096 goto out_destroy_inode_zone;
2097
2098#ifdef CONFIG_XFS_POSIX_ACL
2099 xfs_acl_zone = kmem_zone_init(sizeof(xfs_acl_t), "xfs_acl");
2100 if (!xfs_acl_zone)
2101 goto out_destroy_ili_zone;
2102#endif
2103
2104 return 0;
2105
2106#ifdef CONFIG_XFS_POSIX_ACL
2107 out_destroy_ili_zone:
2108#endif
2109 kmem_zone_destroy(xfs_ili_zone);
2110 out_destroy_inode_zone:
2111 kmem_zone_destroy(xfs_inode_zone);
2112 out_destroy_efi_zone:
2113 kmem_zone_destroy(xfs_efi_zone);
2114 out_destroy_efd_zone:
2115 kmem_zone_destroy(xfs_efd_zone);
2116 out_destroy_buf_item_zone:
2117 kmem_zone_destroy(xfs_buf_item_zone);
2118 out_destroy_trans_zone:
2119 kmem_zone_destroy(xfs_trans_zone);
2120 out_destroy_ifork_zone:
2121 kmem_zone_destroy(xfs_ifork_zone);
2122 out_destroy_dabuf_zone:
2123 kmem_zone_destroy(xfs_dabuf_zone);
2124 out_destroy_da_state_zone:
2125 kmem_zone_destroy(xfs_da_state_zone);
2126 out_destroy_btree_cur_zone:
2127 kmem_zone_destroy(xfs_btree_cur_zone);
2128 out_destroy_bmap_free_item_zone:
2129 kmem_zone_destroy(xfs_bmap_free_item_zone);
2130 out_destroy_log_ticket_zone:
2131 kmem_zone_destroy(xfs_log_ticket_zone);
2132 out_destroy_ioend_pool:
2133 mempool_destroy(xfs_ioend_pool);
2134 out_destroy_ioend_zone:
2135 kmem_zone_destroy(xfs_ioend_zone);
2136 out_destroy_vnode_zone:
2137 kmem_zone_destroy(xfs_vnode_zone);
2138 out:
2139 return -ENOMEM;
2140}
2141
2142STATIC void
2143xfs_destroy_zones(void)
2144{
2145#ifdef CONFIG_XFS_POSIX_ACL
2146 kmem_zone_destroy(xfs_acl_zone);
2147#endif
2148 kmem_zone_destroy(xfs_ili_zone);
2149 kmem_zone_destroy(xfs_inode_zone);
2150 kmem_zone_destroy(xfs_efi_zone);
2151 kmem_zone_destroy(xfs_efd_zone);
2152 kmem_zone_destroy(xfs_buf_item_zone);
2153 kmem_zone_destroy(xfs_trans_zone);
2154 kmem_zone_destroy(xfs_ifork_zone);
2155 kmem_zone_destroy(xfs_dabuf_zone);
2156 kmem_zone_destroy(xfs_da_state_zone);
2157 kmem_zone_destroy(xfs_btree_cur_zone);
2158 kmem_zone_destroy(xfs_bmap_free_item_zone);
2159 kmem_zone_destroy(xfs_log_ticket_zone);
2160 mempool_destroy(xfs_ioend_pool);
2161 kmem_zone_destroy(xfs_ioend_zone);
2162 kmem_zone_destroy(xfs_vnode_zone);
2163
2164}
1da177e4
LT		 2165
2166STATIC int __init
9f8868ff 2167init_xfs_fs(void)
1da177e4
LT		 2168{
2169 int error;
1da177e4
LT		 2170 static char message[] __initdata = KERN_INFO \
2171 XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
2172
2173 printk(message);
2174
1da177e4 2175 ktrace_init(64);
9f8868ff
CH		 2176 vn_init();
2177 xfs_dir_startup();
1da177e4 2178
8758280f 2179 error = xfs_init_zones();
9f8868ff
CH		 2180 if (error)
2181 goto out;
2182
2183 error = xfs_alloc_trace_bufs();
2184 if (error)
2185 goto out_destroy_zones;
2186
2187 error = xfs_mru_cache_init();
2188 if (error)
2189 goto out_free_trace_buffers;
2190
2191 error = xfs_filestream_init();
2192 if (error)
2193 goto out_mru_cache_uninit;
1da177e4 2194
ce8e922c 2195 error = xfs_buf_init();
9f8868ff
CH		 2196 if (error)
2197 goto out_filestream_uninit;
2198
2199 error = xfs_init_procfs();
2200 if (error)
2201 goto out_buf_terminate;
2202
2203 error = xfs_sysctl_register();
2204 if (error)
2205 goto out_cleanup_procfs;
1da177e4 2206
1da177e4
LT		 2207 vfs_initquota();
2208
2209 error = register_filesystem(&xfs_fs_type);
2210 if (error)
9f8868ff 2211 goto out_sysctl_unregister;
1da177e4
LT		 2212 return 0;
2213
9f8868ff
CH		 2214 out_sysctl_unregister:
2215 xfs_sysctl_unregister();
2216 out_cleanup_procfs:
2217 xfs_cleanup_procfs();
2218 out_buf_terminate:
ce8e922c 2219 xfs_buf_terminate();
9f8868ff
CH		 2220 out_filestream_uninit:
2221 xfs_filestream_uninit();
2222 out_mru_cache_uninit:
2223 xfs_mru_cache_uninit();
2224 out_free_trace_buffers:
2225 xfs_free_trace_bufs();
2226 out_destroy_zones:
8758280f 2227 xfs_destroy_zones();
9f8868ff 2228 out:
1da177e4
LT		 2229 return error;
2230}
2231
2232STATIC void __exit
9f8868ff 2233exit_xfs_fs(void)
1da177e4
LT		 2234{
2235 vfs_exitquota();
1da177e4 2236 unregister_filesystem(&xfs_fs_type);
9f8868ff
CH		 2237 xfs_sysctl_unregister();
2238 xfs_cleanup_procfs();
ce8e922c 2239 xfs_buf_terminate();
9f8868ff
CH		 2240 xfs_filestream_uninit();
2241 xfs_mru_cache_uninit();
2242 xfs_free_trace_bufs();
8758280f 2243 xfs_destroy_zones();
1da177e4
LT		 2244 ktrace_uninit();
2245}
2246
2247module_init(init_xfs_fs);
2248module_exit(exit_xfs_fs);
2249
2250MODULE_AUTHOR("Silicon Graphics, Inc.");
2251MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
2252MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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