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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" |
1da177e4 LT |
54 | |
55 | #include <linux/namei.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/mount.h> | |
0829c360 | 58 | #include <linux/mempool.h> |
1da177e4 | 59 | #include <linux/writeback.h> |
4df08c52 | 60 | #include <linux/kthread.h> |
7dfb7103 | 61 | #include <linux/freezer.h> |
1da177e4 | 62 | |
7989cb8e DC |
63 | static struct quotactl_ops xfs_quotactl_operations; |
64 | static struct super_operations xfs_super_operations; | |
65 | static kmem_zone_t *xfs_vnode_zone; | |
66 | static kmem_zone_t *xfs_ioend_zone; | |
0829c360 | 67 | mempool_t *xfs_ioend_pool; |
1da177e4 LT |
68 | |
69 | STATIC struct xfs_mount_args * | |
70 | xfs_args_allocate( | |
764d1f89 NS |
71 | struct super_block *sb, |
72 | int silent) | |
1da177e4 LT |
73 | { |
74 | struct xfs_mount_args *args; | |
75 | ||
76 | args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP); | |
77 | args->logbufs = args->logbufsize = -1; | |
78 | strncpy(args->fsname, sb->s_id, MAXNAMELEN); | |
79 | ||
80 | /* Copy the already-parsed mount(2) flags we're interested in */ | |
1da177e4 LT |
81 | if (sb->s_flags & MS_DIRSYNC) |
82 | args->flags |= XFSMNT_DIRSYNC; | |
83 | if (sb->s_flags & MS_SYNCHRONOUS) | |
84 | args->flags |= XFSMNT_WSYNC; | |
764d1f89 NS |
85 | if (silent) |
86 | args->flags |= XFSMNT_QUIET; | |
1da177e4 LT |
87 | args->flags |= XFSMNT_32BITINODES; |
88 | ||
89 | return args; | |
90 | } | |
91 | ||
a67d7c5f DC |
92 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
93 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
94 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
95 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
96 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
97 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
98 | #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */ | |
99 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ | |
100 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
101 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
102 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
103 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
104 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
105 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
106 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
107 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
108 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
109 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
110 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
111 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
112 | * unwritten extent conversion */ | |
113 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
114 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ | |
115 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ | |
116 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
117 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
118 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
119 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
120 | * in stat(). */ | |
121 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
122 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
123 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
124 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
125 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
126 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
127 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
128 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
129 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
130 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
131 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
132 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
133 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
134 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
135 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
136 | #define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */ | |
137 | #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */ | |
138 | #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */ | |
139 | ||
140 | STATIC unsigned long | |
141 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
142 | { | |
143 | int last, shift_left_factor = 0; | |
144 | char *value = s; | |
145 | ||
146 | last = strlen(value) - 1; | |
147 | if (value[last] == 'K' || value[last] == 'k') { | |
148 | shift_left_factor = 10; | |
149 | value[last] = '\0'; | |
150 | } | |
151 | if (value[last] == 'M' || value[last] == 'm') { | |
152 | shift_left_factor = 20; | |
153 | value[last] = '\0'; | |
154 | } | |
155 | if (value[last] == 'G' || value[last] == 'g') { | |
156 | shift_left_factor = 30; | |
157 | value[last] = '\0'; | |
158 | } | |
159 | ||
160 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
161 | } | |
162 | ||
163 | STATIC int | |
164 | xfs_parseargs( | |
165 | struct xfs_mount *mp, | |
166 | char *options, | |
167 | struct xfs_mount_args *args, | |
168 | int update) | |
169 | { | |
170 | char *this_char, *value, *eov; | |
171 | int dsunit, dswidth, vol_dsunit, vol_dswidth; | |
172 | int iosize; | |
173 | int ikeep = 0; | |
174 | ||
175 | args->flags |= XFSMNT_BARRIER; | |
176 | args->flags2 |= XFSMNT2_COMPAT_IOSIZE; | |
177 | ||
178 | if (!options) | |
179 | goto done; | |
180 | ||
181 | iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0; | |
182 | ||
183 | while ((this_char = strsep(&options, ",")) != NULL) { | |
184 | if (!*this_char) | |
185 | continue; | |
186 | if ((value = strchr(this_char, '=')) != NULL) | |
187 | *value++ = 0; | |
188 | ||
189 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
190 | if (!value || !*value) { | |
191 | cmn_err(CE_WARN, | |
192 | "XFS: %s option requires an argument", | |
193 | this_char); | |
194 | return EINVAL; | |
195 | } | |
196 | args->logbufs = simple_strtoul(value, &eov, 10); | |
197 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { | |
198 | if (!value || !*value) { | |
199 | cmn_err(CE_WARN, | |
200 | "XFS: %s option requires an argument", | |
201 | this_char); | |
202 | return EINVAL; | |
203 | } | |
204 | args->logbufsize = suffix_strtoul(value, &eov, 10); | |
205 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { | |
206 | if (!value || !*value) { | |
207 | cmn_err(CE_WARN, | |
208 | "XFS: %s option requires an argument", | |
209 | this_char); | |
210 | return EINVAL; | |
211 | } | |
212 | strncpy(args->logname, value, MAXNAMELEN); | |
213 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { | |
214 | if (!value || !*value) { | |
215 | cmn_err(CE_WARN, | |
216 | "XFS: %s option requires an argument", | |
217 | this_char); | |
218 | return EINVAL; | |
219 | } | |
220 | strncpy(args->mtpt, value, MAXNAMELEN); | |
221 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { | |
222 | if (!value || !*value) { | |
223 | cmn_err(CE_WARN, | |
224 | "XFS: %s option requires an argument", | |
225 | this_char); | |
226 | return EINVAL; | |
227 | } | |
228 | strncpy(args->rtname, value, MAXNAMELEN); | |
229 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { | |
230 | if (!value || !*value) { | |
231 | cmn_err(CE_WARN, | |
232 | "XFS: %s option requires an argument", | |
233 | this_char); | |
234 | return EINVAL; | |
235 | } | |
236 | iosize = simple_strtoul(value, &eov, 10); | |
237 | args->flags |= XFSMNT_IOSIZE; | |
238 | args->iosizelog = (uint8_t) iosize; | |
239 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { | |
240 | if (!value || !*value) { | |
241 | cmn_err(CE_WARN, | |
242 | "XFS: %s option requires an argument", | |
243 | this_char); | |
244 | return EINVAL; | |
245 | } | |
246 | iosize = suffix_strtoul(value, &eov, 10); | |
247 | args->flags |= XFSMNT_IOSIZE; | |
248 | args->iosizelog = ffs(iosize) - 1; | |
249 | } else if (!strcmp(this_char, MNTOPT_GRPID) || | |
250 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
251 | mp->m_flags |= XFS_MOUNT_GRPID; | |
252 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
253 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
254 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
255 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
256 | args->flags |= XFSMNT_WSYNC; | |
257 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { | |
258 | args->flags |= XFSMNT_OSYNCISOSYNC; | |
259 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { | |
260 | args->flags |= XFSMNT_NORECOVERY; | |
261 | } else if (!strcmp(this_char, MNTOPT_INO64)) { | |
262 | args->flags |= XFSMNT_INO64; | |
263 | #if !XFS_BIG_INUMS | |
264 | cmn_err(CE_WARN, | |
265 | "XFS: %s option not allowed on this system", | |
266 | this_char); | |
267 | return EINVAL; | |
268 | #endif | |
269 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { | |
270 | args->flags |= XFSMNT_NOALIGN; | |
271 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { | |
272 | args->flags |= XFSMNT_SWALLOC; | |
273 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { | |
274 | if (!value || !*value) { | |
275 | cmn_err(CE_WARN, | |
276 | "XFS: %s option requires an argument", | |
277 | this_char); | |
278 | return EINVAL; | |
279 | } | |
280 | dsunit = simple_strtoul(value, &eov, 10); | |
281 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
282 | if (!value || !*value) { | |
283 | cmn_err(CE_WARN, | |
284 | "XFS: %s option requires an argument", | |
285 | this_char); | |
286 | return EINVAL; | |
287 | } | |
288 | dswidth = simple_strtoul(value, &eov, 10); | |
289 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
290 | args->flags &= ~XFSMNT_32BITINODES; | |
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_NOUUID)) { | |
298 | args->flags |= XFSMNT_NOUUID; | |
299 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { | |
300 | args->flags |= XFSMNT_BARRIER; | |
301 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { | |
302 | args->flags &= ~XFSMNT_BARRIER; | |
303 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { | |
304 | ikeep = 1; | |
305 | args->flags &= ~XFSMNT_IDELETE; | |
306 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { | |
307 | args->flags |= XFSMNT_IDELETE; | |
308 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { | |
309 | args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE; | |
310 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { | |
311 | args->flags2 |= XFSMNT2_COMPAT_IOSIZE; | |
312 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { | |
313 | args->flags |= XFSMNT_ATTR2; | |
314 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { | |
315 | args->flags &= ~XFSMNT_ATTR2; | |
316 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { | |
317 | args->flags2 |= XFSMNT2_FILESTREAMS; | |
318 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { | |
319 | args->flags &= ~(XFSMNT_UQUOTAENF|XFSMNT_UQUOTA); | |
320 | args->flags &= ~(XFSMNT_GQUOTAENF|XFSMNT_GQUOTA); | |
321 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || | |
322 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
323 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
324 | args->flags |= XFSMNT_UQUOTA | XFSMNT_UQUOTAENF; | |
325 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || | |
326 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
327 | args->flags |= XFSMNT_UQUOTA; | |
328 | args->flags &= ~XFSMNT_UQUOTAENF; | |
329 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || | |
330 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
331 | args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF; | |
332 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { | |
333 | args->flags |= XFSMNT_PQUOTA; | |
334 | args->flags &= ~XFSMNT_PQUOTAENF; | |
335 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || | |
336 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
337 | args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF; | |
338 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { | |
339 | args->flags |= XFSMNT_GQUOTA; | |
340 | args->flags &= ~XFSMNT_GQUOTAENF; | |
341 | } else if (!strcmp(this_char, MNTOPT_DMAPI)) { | |
342 | args->flags |= XFSMNT_DMAPI; | |
343 | } else if (!strcmp(this_char, MNTOPT_XDSM)) { | |
344 | args->flags |= XFSMNT_DMAPI; | |
345 | } else if (!strcmp(this_char, MNTOPT_DMI)) { | |
346 | args->flags |= XFSMNT_DMAPI; | |
347 | } else if (!strcmp(this_char, "ihashsize")) { | |
348 | cmn_err(CE_WARN, | |
349 | "XFS: ihashsize no longer used, option is deprecated."); | |
350 | } else if (!strcmp(this_char, "osyncisdsync")) { | |
351 | /* no-op, this is now the default */ | |
352 | cmn_err(CE_WARN, | |
353 | "XFS: osyncisdsync is now the default, option is deprecated."); | |
354 | } else if (!strcmp(this_char, "irixsgid")) { | |
355 | cmn_err(CE_WARN, | |
356 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
357 | } else { | |
358 | cmn_err(CE_WARN, | |
359 | "XFS: unknown mount option [%s].", this_char); | |
360 | return EINVAL; | |
361 | } | |
362 | } | |
363 | ||
364 | if (args->flags & XFSMNT_NORECOVERY) { | |
365 | if ((mp->m_flags & XFS_MOUNT_RDONLY) == 0) { | |
366 | cmn_err(CE_WARN, | |
367 | "XFS: no-recovery mounts must be read-only."); | |
368 | return EINVAL; | |
369 | } | |
370 | } | |
371 | ||
372 | if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) { | |
373 | cmn_err(CE_WARN, | |
374 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
375 | return EINVAL; | |
376 | } | |
377 | ||
378 | if ((args->flags & XFSMNT_GQUOTA) && (args->flags & XFSMNT_PQUOTA)) { | |
379 | cmn_err(CE_WARN, | |
380 | "XFS: cannot mount with both project and group quota"); | |
381 | return EINVAL; | |
382 | } | |
383 | ||
384 | if ((args->flags & XFSMNT_DMAPI) && *args->mtpt == '\0') { | |
385 | printk("XFS: %s option needs the mount point option as well\n", | |
386 | MNTOPT_DMAPI); | |
387 | return EINVAL; | |
388 | } | |
389 | ||
390 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { | |
391 | cmn_err(CE_WARN, | |
392 | "XFS: sunit and swidth must be specified together"); | |
393 | return EINVAL; | |
394 | } | |
395 | ||
396 | if (dsunit && (dswidth % dsunit != 0)) { | |
397 | cmn_err(CE_WARN, | |
398 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
399 | dswidth, dsunit); | |
400 | return EINVAL; | |
401 | } | |
402 | ||
403 | /* | |
404 | * Applications using DMI filesystems often expect the | |
405 | * inode generation number to be monotonically increasing. | |
406 | * If we delete inode chunks we break this assumption, so | |
407 | * keep unused inode chunks on disk for DMI filesystems | |
408 | * until we come up with a better solution. | |
409 | * Note that if "ikeep" or "noikeep" mount options are | |
410 | * supplied, then they are honored. | |
411 | */ | |
412 | if (!(args->flags & XFSMNT_DMAPI) && !ikeep) | |
413 | args->flags |= XFSMNT_IDELETE; | |
414 | ||
415 | if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { | |
416 | if (dsunit) { | |
417 | args->sunit = dsunit; | |
418 | args->flags |= XFSMNT_RETERR; | |
419 | } else { | |
420 | args->sunit = vol_dsunit; | |
421 | } | |
422 | dswidth ? (args->swidth = dswidth) : | |
423 | (args->swidth = vol_dswidth); | |
424 | } else { | |
425 | args->sunit = args->swidth = 0; | |
426 | } | |
427 | ||
428 | done: | |
429 | if (args->flags & XFSMNT_32BITINODES) | |
430 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
431 | if (args->flags2) | |
432 | args->flags |= XFSMNT_FLAGS2; | |
433 | return 0; | |
434 | } | |
435 | ||
436 | struct proc_xfs_info { | |
437 | int flag; | |
438 | char *str; | |
439 | }; | |
440 | ||
441 | STATIC int | |
442 | xfs_showargs( | |
443 | struct xfs_mount *mp, | |
444 | struct seq_file *m) | |
445 | { | |
446 | static struct proc_xfs_info xfs_info_set[] = { | |
447 | /* the few simple ones we can get from the mount struct */ | |
448 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, | |
449 | { XFS_MOUNT_INO64, "," MNTOPT_INO64 }, | |
450 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, | |
451 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
452 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
453 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
454 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, | |
455 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, | |
456 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
457 | { XFS_MOUNT_DMAPI, "," MNTOPT_DMAPI }, | |
458 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, | |
459 | { 0, NULL } | |
460 | }; | |
461 | static struct proc_xfs_info xfs_info_unset[] = { | |
462 | /* the few simple ones we can get from the mount struct */ | |
463 | { XFS_MOUNT_IDELETE, "," MNTOPT_IKEEP }, | |
464 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, | |
465 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
466 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
467 | { 0, NULL } | |
468 | }; | |
469 | struct proc_xfs_info *xfs_infop; | |
470 | ||
471 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
472 | if (mp->m_flags & xfs_infop->flag) | |
473 | seq_puts(m, xfs_infop->str); | |
474 | } | |
475 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
476 | if (!(mp->m_flags & xfs_infop->flag)) | |
477 | seq_puts(m, xfs_infop->str); | |
478 | } | |
479 | ||
480 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
481 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
482 | (int)(1 << mp->m_writeio_log) >> 10); | |
483 | ||
484 | if (mp->m_logbufs > 0) | |
485 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
486 | if (mp->m_logbsize > 0) | |
487 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
488 | ||
489 | if (mp->m_logname) | |
490 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
491 | if (mp->m_rtname) | |
492 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
493 | ||
494 | if (mp->m_dalign > 0) | |
495 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
496 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
497 | if (mp->m_swidth > 0) | |
498 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
499 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
500 | ||
501 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
502 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
503 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
504 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
505 | ||
506 | if (mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
507 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
508 | else if (mp->m_qflags & XFS_PQUOTA_ACCT) | |
509 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
510 | ||
511 | if (mp->m_qflags & (XFS_GQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
512 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
513 | else if (mp->m_qflags & XFS_GQUOTA_ACCT) | |
514 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
515 | ||
516 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
517 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
518 | ||
519 | return 0; | |
520 | } | |
1da177e4 LT |
521 | __uint64_t |
522 | xfs_max_file_offset( | |
523 | unsigned int blockshift) | |
524 | { | |
525 | unsigned int pagefactor = 1; | |
526 | unsigned int bitshift = BITS_PER_LONG - 1; | |
527 | ||
528 | /* Figure out maximum filesize, on Linux this can depend on | |
529 | * the filesystem blocksize (on 32 bit platforms). | |
530 | * __block_prepare_write does this in an [unsigned] long... | |
531 | * page->index << (PAGE_CACHE_SHIFT - bbits) | |
532 | * So, for page sized blocks (4K on 32 bit platforms), | |
533 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
534 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
535 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
536 | * Note1: get_block_t takes a long (implicit cast from above) | |
537 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
538 | * can optionally convert the [unsigned] long from above into | |
539 | * an [unsigned] long long. | |
540 | */ | |
541 | ||
542 | #if BITS_PER_LONG == 32 | |
543 | # if defined(CONFIG_LBD) | |
544 | ASSERT(sizeof(sector_t) == 8); | |
545 | pagefactor = PAGE_CACHE_SIZE; | |
546 | bitshift = BITS_PER_LONG; | |
547 | # else | |
548 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
549 | # endif | |
550 | #endif | |
551 | ||
552 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
553 | } | |
554 | ||
7989cb8e | 555 | STATIC_INLINE void |
1da177e4 LT |
556 | xfs_set_inodeops( |
557 | struct inode *inode) | |
558 | { | |
0432dab2 CH |
559 | switch (inode->i_mode & S_IFMT) { |
560 | case S_IFREG: | |
416c6d5b | 561 | inode->i_op = &xfs_inode_operations; |
3562fd45 | 562 | inode->i_fop = &xfs_file_operations; |
e4c573bb | 563 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
0432dab2 CH |
564 | break; |
565 | case S_IFDIR: | |
416c6d5b | 566 | inode->i_op = &xfs_dir_inode_operations; |
3562fd45 | 567 | inode->i_fop = &xfs_dir_file_operations; |
0432dab2 CH |
568 | break; |
569 | case S_IFLNK: | |
416c6d5b | 570 | inode->i_op = &xfs_symlink_inode_operations; |
1da177e4 | 571 | if (inode->i_blocks) |
e4c573bb | 572 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
0432dab2 CH |
573 | break; |
574 | default: | |
416c6d5b | 575 | inode->i_op = &xfs_inode_operations; |
1da177e4 | 576 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
0432dab2 | 577 | break; |
1da177e4 LT |
578 | } |
579 | } | |
580 | ||
7989cb8e | 581 | STATIC_INLINE void |
1da177e4 LT |
582 | xfs_revalidate_inode( |
583 | xfs_mount_t *mp, | |
67fcaa73 | 584 | bhv_vnode_t *vp, |
1da177e4 LT |
585 | xfs_inode_t *ip) |
586 | { | |
ec86dc02 | 587 | struct inode *inode = vn_to_inode(vp); |
1da177e4 | 588 | |
0432dab2 | 589 | inode->i_mode = ip->i_d.di_mode; |
1da177e4 LT |
590 | inode->i_nlink = ip->i_d.di_nlink; |
591 | inode->i_uid = ip->i_d.di_uid; | |
592 | inode->i_gid = ip->i_d.di_gid; | |
0432dab2 CH |
593 | |
594 | switch (inode->i_mode & S_IFMT) { | |
595 | case S_IFBLK: | |
596 | case S_IFCHR: | |
597 | inode->i_rdev = | |
598 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, | |
599 | sysv_minor(ip->i_df.if_u2.if_rdev)); | |
600 | break; | |
601 | default: | |
1da177e4 | 602 | inode->i_rdev = 0; |
0432dab2 | 603 | break; |
1da177e4 | 604 | } |
0432dab2 | 605 | |
1da177e4 LT |
606 | inode->i_generation = ip->i_d.di_gen; |
607 | i_size_write(inode, ip->i_d.di_size); | |
608 | inode->i_blocks = | |
609 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); | |
610 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; | |
611 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; | |
612 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; | |
613 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; | |
614 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; | |
615 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; | |
616 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) | |
617 | inode->i_flags |= S_IMMUTABLE; | |
618 | else | |
619 | inode->i_flags &= ~S_IMMUTABLE; | |
620 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) | |
621 | inode->i_flags |= S_APPEND; | |
622 | else | |
623 | inode->i_flags &= ~S_APPEND; | |
624 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) | |
625 | inode->i_flags |= S_SYNC; | |
626 | else | |
627 | inode->i_flags &= ~S_SYNC; | |
628 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) | |
629 | inode->i_flags |= S_NOATIME; | |
630 | else | |
631 | inode->i_flags &= ~S_NOATIME; | |
b3aea4ed | 632 | xfs_iflags_clear(ip, XFS_IMODIFIED); |
1da177e4 LT |
633 | } |
634 | ||
635 | void | |
636 | xfs_initialize_vnode( | |
48c872a9 | 637 | struct xfs_mount *mp, |
67fcaa73 | 638 | bhv_vnode_t *vp, |
745f6919 | 639 | struct xfs_inode *ip) |
1da177e4 | 640 | { |
ec86dc02 | 641 | struct inode *inode = vn_to_inode(vp); |
1da177e4 | 642 | |
739bfb2a | 643 | if (!ip->i_vnode) { |
739bfb2a CH |
644 | ip->i_vnode = vp; |
645 | inode->i_private = ip; | |
1da177e4 LT |
646 | } |
647 | ||
648 | /* | |
649 | * We need to set the ops vectors, and unlock the inode, but if | |
650 | * we have been called during the new inode create process, it is | |
651 | * too early to fill in the Linux inode. We will get called a | |
652 | * second time once the inode is properly set up, and then we can | |
653 | * finish our work. | |
654 | */ | |
745f6919 | 655 | if (ip->i_d.di_mode != 0 && (inode->i_state & I_NEW)) { |
48c872a9 | 656 | xfs_revalidate_inode(mp, vp, ip); |
1da177e4 | 657 | xfs_set_inodeops(inode); |
ec86dc02 | 658 | |
7a18c386 | 659 | xfs_iflags_clear(ip, XFS_INEW); |
1da177e4 LT |
660 | barrier(); |
661 | ||
662 | unlock_new_inode(inode); | |
663 | } | |
664 | } | |
665 | ||
666 | int | |
667 | xfs_blkdev_get( | |
668 | xfs_mount_t *mp, | |
669 | const char *name, | |
670 | struct block_device **bdevp) | |
671 | { | |
672 | int error = 0; | |
673 | ||
674 | *bdevp = open_bdev_excl(name, 0, mp); | |
675 | if (IS_ERR(*bdevp)) { | |
676 | error = PTR_ERR(*bdevp); | |
677 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
678 | } | |
679 | ||
680 | return -error; | |
681 | } | |
682 | ||
683 | void | |
684 | xfs_blkdev_put( | |
685 | struct block_device *bdev) | |
686 | { | |
687 | if (bdev) | |
688 | close_bdev_excl(bdev); | |
689 | } | |
690 | ||
f538d4da CH |
691 | /* |
692 | * Try to write out the superblock using barriers. | |
693 | */ | |
694 | STATIC int | |
695 | xfs_barrier_test( | |
696 | xfs_mount_t *mp) | |
697 | { | |
698 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
699 | int error; | |
700 | ||
701 | XFS_BUF_UNDONE(sbp); | |
702 | XFS_BUF_UNREAD(sbp); | |
703 | XFS_BUF_UNDELAYWRITE(sbp); | |
704 | XFS_BUF_WRITE(sbp); | |
705 | XFS_BUF_UNASYNC(sbp); | |
706 | XFS_BUF_ORDERED(sbp); | |
707 | ||
708 | xfsbdstrat(mp, sbp); | |
709 | error = xfs_iowait(sbp); | |
710 | ||
711 | /* | |
712 | * Clear all the flags we set and possible error state in the | |
713 | * buffer. We only did the write to try out whether barriers | |
714 | * worked and shouldn't leave any traces in the superblock | |
715 | * buffer. | |
716 | */ | |
717 | XFS_BUF_DONE(sbp); | |
718 | XFS_BUF_ERROR(sbp, 0); | |
719 | XFS_BUF_UNORDERED(sbp); | |
720 | ||
721 | xfs_buf_relse(sbp); | |
722 | return error; | |
723 | } | |
724 | ||
725 | void | |
726 | xfs_mountfs_check_barriers(xfs_mount_t *mp) | |
727 | { | |
728 | int error; | |
729 | ||
730 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
731 | xfs_fs_cmn_err(CE_NOTE, mp, | |
732 | "Disabling barriers, not supported with external log device"); | |
733 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 734 | return; |
f538d4da CH |
735 | } |
736 | ||
ce8e922c | 737 | if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered == |
f538d4da CH |
738 | QUEUE_ORDERED_NONE) { |
739 | xfs_fs_cmn_err(CE_NOTE, mp, | |
740 | "Disabling barriers, not supported by the underlying device"); | |
741 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 742 | return; |
f538d4da CH |
743 | } |
744 | ||
b2ea401b NS |
745 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
746 | xfs_fs_cmn_err(CE_NOTE, mp, | |
747 | "Disabling barriers, underlying device is readonly"); | |
748 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
749 | return; | |
750 | } | |
751 | ||
f538d4da CH |
752 | error = xfs_barrier_test(mp); |
753 | if (error) { | |
754 | xfs_fs_cmn_err(CE_NOTE, mp, | |
755 | "Disabling barriers, trial barrier write failed"); | |
756 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 757 | return; |
f538d4da CH |
758 | } |
759 | } | |
760 | ||
761 | void | |
762 | xfs_blkdev_issue_flush( | |
763 | xfs_buftarg_t *buftarg) | |
764 | { | |
ce8e922c | 765 | blkdev_issue_flush(buftarg->bt_bdev, NULL); |
f538d4da | 766 | } |
1da177e4 LT |
767 | |
768 | STATIC struct inode * | |
a50cd269 | 769 | xfs_fs_alloc_inode( |
1da177e4 LT |
770 | struct super_block *sb) |
771 | { | |
67fcaa73 | 772 | bhv_vnode_t *vp; |
1da177e4 | 773 | |
8758280f NS |
774 | vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP); |
775 | if (unlikely(!vp)) | |
1da177e4 | 776 | return NULL; |
ec86dc02 | 777 | return vn_to_inode(vp); |
1da177e4 LT |
778 | } |
779 | ||
780 | STATIC void | |
a50cd269 | 781 | xfs_fs_destroy_inode( |
1da177e4 LT |
782 | struct inode *inode) |
783 | { | |
ec86dc02 | 784 | kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode)); |
1da177e4 LT |
785 | } |
786 | ||
787 | STATIC void | |
a50cd269 | 788 | xfs_fs_inode_init_once( |
8758280f | 789 | kmem_zone_t *zonep, |
4ba9b9d0 | 790 | void *vnode) |
1da177e4 | 791 | { |
a35afb83 | 792 | inode_init_once(vn_to_inode((bhv_vnode_t *)vnode)); |
1da177e4 LT |
793 | } |
794 | ||
795 | STATIC int | |
8758280f | 796 | xfs_init_zones(void) |
1da177e4 | 797 | { |
67fcaa73 | 798 | xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode", |
e0cc2325 NS |
799 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | |
800 | KM_ZONE_SPREAD, | |
a50cd269 | 801 | xfs_fs_inode_init_once); |
0829c360 CH |
802 | if (!xfs_vnode_zone) |
803 | goto out; | |
804 | ||
805 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
806 | if (!xfs_ioend_zone) | |
807 | goto out_destroy_vnode_zone; | |
808 | ||
93d2341c MD |
809 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, |
810 | xfs_ioend_zone); | |
0829c360 CH |
811 | if (!xfs_ioend_pool) |
812 | goto out_free_ioend_zone; | |
1da177e4 | 813 | return 0; |
0829c360 | 814 | |
0829c360 CH |
815 | out_free_ioend_zone: |
816 | kmem_zone_destroy(xfs_ioend_zone); | |
817 | out_destroy_vnode_zone: | |
818 | kmem_zone_destroy(xfs_vnode_zone); | |
819 | out: | |
820 | return -ENOMEM; | |
1da177e4 LT |
821 | } |
822 | ||
823 | STATIC void | |
8758280f | 824 | xfs_destroy_zones(void) |
1da177e4 | 825 | { |
0829c360 CH |
826 | mempool_destroy(xfs_ioend_pool); |
827 | kmem_zone_destroy(xfs_vnode_zone); | |
828 | kmem_zone_destroy(xfs_ioend_zone); | |
1da177e4 LT |
829 | } |
830 | ||
831 | /* | |
832 | * Attempt to flush the inode, this will actually fail | |
833 | * if the inode is pinned, but we dirty the inode again | |
834 | * at the point when it is unpinned after a log write, | |
8758280f | 835 | * since this is when the inode itself becomes flushable. |
1da177e4 LT |
836 | */ |
837 | STATIC int | |
a50cd269 | 838 | xfs_fs_write_inode( |
1da177e4 LT |
839 | struct inode *inode, |
840 | int sync) | |
841 | { | |
1da177e4 LT |
842 | int error = 0, flags = FLUSH_INODE; |
843 | ||
cf441eeb | 844 | xfs_itrace_entry(XFS_I(inode)); |
739bfb2a CH |
845 | if (sync) { |
846 | filemap_fdatawait(inode->i_mapping); | |
847 | flags |= FLUSH_SYNC; | |
1da177e4 | 848 | } |
739bfb2a | 849 | error = xfs_inode_flush(XFS_I(inode), flags); |
e893bffd LM |
850 | /* |
851 | * if we failed to write out the inode then mark | |
852 | * it dirty again so we'll try again later. | |
853 | */ | |
854 | if (error) | |
855 | mark_inode_dirty_sync(inode); | |
739bfb2a | 856 | |
1da177e4 LT |
857 | return -error; |
858 | } | |
859 | ||
860 | STATIC void | |
a50cd269 | 861 | xfs_fs_clear_inode( |
1da177e4 LT |
862 | struct inode *inode) |
863 | { | |
1543d79c | 864 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 865 | |
02ba71de | 866 | /* |
1543d79c | 867 | * ip can be null when xfs_iget_core calls xfs_idestroy if we |
02ba71de CH |
868 | * find an inode with di_mode == 0 but without IGET_CREATE set. |
869 | */ | |
1543d79c | 870 | if (ip) { |
cf441eeb | 871 | xfs_itrace_entry(ip); |
1543d79c CH |
872 | XFS_STATS_INC(vn_rele); |
873 | XFS_STATS_INC(vn_remove); | |
874 | XFS_STATS_INC(vn_reclaim); | |
875 | XFS_STATS_DEC(vn_active); | |
876 | ||
877 | xfs_inactive(ip); | |
878 | xfs_iflags_clear(ip, XFS_IMODIFIED); | |
879 | if (xfs_reclaim(ip)) | |
880 | panic("%s: cannot reclaim 0x%p\n", __FUNCTION__, inode); | |
b3aea4ed | 881 | } |
56d433e4 | 882 | |
739bfb2a | 883 | ASSERT(XFS_I(inode) == NULL); |
56d433e4 | 884 | } |
1da177e4 LT |
885 | |
886 | /* | |
887 | * Enqueue a work item to be picked up by the vfs xfssyncd thread. | |
888 | * Doing this has two advantages: | |
889 | * - It saves on stack space, which is tight in certain situations | |
890 | * - It can be used (with care) as a mechanism to avoid deadlocks. | |
891 | * Flushing while allocating in a full filesystem requires both. | |
892 | */ | |
893 | STATIC void | |
894 | xfs_syncd_queue_work( | |
74394496 | 895 | struct xfs_mount *mp, |
1da177e4 | 896 | void *data, |
74394496 | 897 | void (*syncer)(struct xfs_mount *, void *)) |
1da177e4 | 898 | { |
b83bd138 | 899 | struct bhv_vfs_sync_work *work; |
1da177e4 | 900 | |
b83bd138 | 901 | work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP); |
1da177e4 LT |
902 | INIT_LIST_HEAD(&work->w_list); |
903 | work->w_syncer = syncer; | |
904 | work->w_data = data; | |
74394496 CH |
905 | work->w_mount = mp; |
906 | spin_lock(&mp->m_sync_lock); | |
907 | list_add_tail(&work->w_list, &mp->m_sync_list); | |
908 | spin_unlock(&mp->m_sync_lock); | |
909 | wake_up_process(mp->m_sync_task); | |
1da177e4 LT |
910 | } |
911 | ||
912 | /* | |
913 | * Flush delayed allocate data, attempting to free up reserved space | |
914 | * from existing allocations. At this point a new allocation attempt | |
915 | * has failed with ENOSPC and we are in the process of scratching our | |
916 | * heads, looking about for more room... | |
917 | */ | |
918 | STATIC void | |
919 | xfs_flush_inode_work( | |
74394496 CH |
920 | struct xfs_mount *mp, |
921 | void *arg) | |
1da177e4 | 922 | { |
74394496 CH |
923 | struct inode *inode = arg; |
924 | filemap_flush(inode->i_mapping); | |
925 | iput(inode); | |
1da177e4 LT |
926 | } |
927 | ||
928 | void | |
929 | xfs_flush_inode( | |
930 | xfs_inode_t *ip) | |
931 | { | |
74394496 | 932 | struct inode *inode = ip->i_vnode; |
1da177e4 LT |
933 | |
934 | igrab(inode); | |
74394496 | 935 | xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inode_work); |
041e0e3b | 936 | delay(msecs_to_jiffies(500)); |
1da177e4 LT |
937 | } |
938 | ||
939 | /* | |
940 | * This is the "bigger hammer" version of xfs_flush_inode_work... | |
941 | * (IOW, "If at first you don't succeed, use a Bigger Hammer"). | |
942 | */ | |
943 | STATIC void | |
944 | xfs_flush_device_work( | |
74394496 CH |
945 | struct xfs_mount *mp, |
946 | void *arg) | |
1da177e4 | 947 | { |
74394496 | 948 | struct inode *inode = arg; |
b267ce99 | 949 | sync_blockdev(mp->m_super->s_bdev); |
74394496 | 950 | iput(inode); |
1da177e4 LT |
951 | } |
952 | ||
953 | void | |
954 | xfs_flush_device( | |
955 | xfs_inode_t *ip) | |
956 | { | |
ec86dc02 | 957 | struct inode *inode = vn_to_inode(XFS_ITOV(ip)); |
1da177e4 LT |
958 | |
959 | igrab(inode); | |
74394496 | 960 | xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_device_work); |
041e0e3b | 961 | delay(msecs_to_jiffies(500)); |
1da177e4 LT |
962 | xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC); |
963 | } | |
964 | ||
1da177e4 | 965 | STATIC void |
74394496 CH |
966 | xfs_sync_worker( |
967 | struct xfs_mount *mp, | |
1da177e4 LT |
968 | void *unused) |
969 | { | |
970 | int error; | |
971 | ||
74394496 CH |
972 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) |
973 | error = xfs_sync(mp, SYNC_FSDATA | SYNC_BDFLUSH | SYNC_ATTR | | |
974 | SYNC_REFCACHE | SYNC_SUPER); | |
975 | mp->m_sync_seq++; | |
976 | wake_up(&mp->m_wait_single_sync_task); | |
1da177e4 LT |
977 | } |
978 | ||
979 | STATIC int | |
980 | xfssyncd( | |
981 | void *arg) | |
982 | { | |
74394496 | 983 | struct xfs_mount *mp = arg; |
1da177e4 | 984 | long timeleft; |
b83bd138 | 985 | bhv_vfs_sync_work_t *work, *n; |
4df08c52 | 986 | LIST_HEAD (tmp); |
1da177e4 | 987 | |
83144186 | 988 | set_freezable(); |
041e0e3b | 989 | timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10); |
1da177e4 | 990 | for (;;) { |
041e0e3b | 991 | timeleft = schedule_timeout_interruptible(timeleft); |
1da177e4 | 992 | /* swsusp */ |
3e1d1d28 | 993 | try_to_freeze(); |
74394496 | 994 | if (kthread_should_stop() && list_empty(&mp->m_sync_list)) |
1da177e4 LT |
995 | break; |
996 | ||
74394496 | 997 | spin_lock(&mp->m_sync_lock); |
1da177e4 LT |
998 | /* |
999 | * We can get woken by laptop mode, to do a sync - | |
1000 | * that's the (only!) case where the list would be | |
1001 | * empty with time remaining. | |
1002 | */ | |
74394496 | 1003 | if (!timeleft || list_empty(&mp->m_sync_list)) { |
1da177e4 | 1004 | if (!timeleft) |
041e0e3b NA |
1005 | timeleft = xfs_syncd_centisecs * |
1006 | msecs_to_jiffies(10); | |
74394496 CH |
1007 | INIT_LIST_HEAD(&mp->m_sync_work.w_list); |
1008 | list_add_tail(&mp->m_sync_work.w_list, | |
1009 | &mp->m_sync_list); | |
1da177e4 | 1010 | } |
74394496 | 1011 | list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list) |
1da177e4 | 1012 | list_move(&work->w_list, &tmp); |
74394496 | 1013 | spin_unlock(&mp->m_sync_lock); |
1da177e4 LT |
1014 | |
1015 | list_for_each_entry_safe(work, n, &tmp, w_list) { | |
74394496 | 1016 | (*work->w_syncer)(mp, work->w_data); |
1da177e4 | 1017 | list_del(&work->w_list); |
74394496 | 1018 | if (work == &mp->m_sync_work) |
1da177e4 | 1019 | continue; |
b83bd138 | 1020 | kmem_free(work, sizeof(struct bhv_vfs_sync_work)); |
1da177e4 LT |
1021 | } |
1022 | } | |
1023 | ||
1da177e4 LT |
1024 | return 0; |
1025 | } | |
1026 | ||
1da177e4 | 1027 | STATIC void |
a50cd269 | 1028 | xfs_fs_put_super( |
1da177e4 LT |
1029 | struct super_block *sb) |
1030 | { | |
745f6919 | 1031 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 LT |
1032 | int error; |
1033 | ||
74394496 CH |
1034 | kthread_stop(mp->m_sync_task); |
1035 | ||
745f6919 CH |
1036 | xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI); |
1037 | error = xfs_unmount(mp, 0, NULL); | |
b267ce99 | 1038 | if (error) |
b83bd138 | 1039 | printk("XFS: unmount got error=%d\n", error); |
1da177e4 LT |
1040 | } |
1041 | ||
1042 | STATIC void | |
a50cd269 | 1043 | xfs_fs_write_super( |
1da177e4 LT |
1044 | struct super_block *sb) |
1045 | { | |
b83bd138 | 1046 | if (!(sb->s_flags & MS_RDONLY)) |
745f6919 | 1047 | xfs_sync(XFS_M(sb), SYNC_FSDATA); |
1da177e4 LT |
1048 | sb->s_dirt = 0; |
1049 | } | |
1050 | ||
1051 | STATIC int | |
a50cd269 | 1052 | xfs_fs_sync_super( |
1da177e4 LT |
1053 | struct super_block *sb, |
1054 | int wait) | |
1055 | { | |
745f6919 | 1056 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 NS |
1057 | int error; |
1058 | int flags; | |
1da177e4 | 1059 | |
e893bffd LM |
1060 | /* |
1061 | * Treat a sync operation like a freeze. This is to work | |
1062 | * around a race in sync_inodes() which works in two phases | |
1063 | * - an asynchronous flush, which can write out an inode | |
1064 | * without waiting for file size updates to complete, and a | |
1065 | * synchronous flush, which wont do anything because the | |
1066 | * async flush removed the inode's dirty flag. Also | |
1067 | * sync_inodes() will not see any files that just have | |
1068 | * outstanding transactions to be flushed because we don't | |
1069 | * dirty the Linux inode until after the transaction I/O | |
1070 | * completes. | |
1071 | */ | |
1072 | if (wait || unlikely(sb->s_frozen == SB_FREEZE_WRITE)) { | |
2823945f DC |
1073 | /* |
1074 | * First stage of freeze - no more writers will make progress | |
1075 | * now we are here, so we flush delwri and delalloc buffers | |
1076 | * here, then wait for all I/O to complete. Data is frozen at | |
1077 | * that point. Metadata is not frozen, transactions can still | |
1078 | * occur here so don't bother flushing the buftarg (i.e | |
1079 | * SYNC_QUIESCE) because it'll just get dirty again. | |
1080 | */ | |
516b2e7c | 1081 | flags = SYNC_DATA_QUIESCE; |
2823945f | 1082 | } else |
e893bffd | 1083 | flags = SYNC_FSDATA; |
1da177e4 | 1084 | |
745f6919 | 1085 | error = xfs_sync(mp, flags); |
1da177e4 LT |
1086 | sb->s_dirt = 0; |
1087 | ||
1088 | if (unlikely(laptop_mode)) { | |
74394496 | 1089 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1090 | |
1091 | /* | |
1092 | * The disk must be active because we're syncing. | |
1093 | * We schedule xfssyncd now (now that the disk is | |
1094 | * active) instead of later (when it might not be). | |
1095 | */ | |
74394496 | 1096 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1097 | /* |
1098 | * We have to wait for the sync iteration to complete. | |
1099 | * If we don't, the disk activity caused by the sync | |
1100 | * will come after the sync is completed, and that | |
1101 | * triggers another sync from laptop mode. | |
1102 | */ | |
74394496 CH |
1103 | wait_event(mp->m_wait_single_sync_task, |
1104 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1105 | } |
1106 | ||
1107 | return -error; | |
1108 | } | |
1109 | ||
1110 | STATIC int | |
a50cd269 | 1111 | xfs_fs_statfs( |
726c3342 | 1112 | struct dentry *dentry, |
1da177e4 LT |
1113 | struct kstatfs *statp) |
1114 | { | |
4ca488eb CH |
1115 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1116 | xfs_sb_t *sbp = &mp->m_sb; | |
1117 | __uint64_t fakeinos, id; | |
1118 | xfs_extlen_t lsize; | |
1119 | ||
1120 | statp->f_type = XFS_SB_MAGIC; | |
1121 | statp->f_namelen = MAXNAMELEN - 1; | |
1122 | ||
1123 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1124 | statp->f_fsid.val[0] = (u32)id; | |
1125 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1126 | ||
1127 | xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT); | |
1128 | ||
1129 | spin_lock(&mp->m_sb_lock); | |
1130 | statp->f_bsize = sbp->sb_blocksize; | |
1131 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1132 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1133 | statp->f_bfree = statp->f_bavail = | |
1134 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1135 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
1136 | #if XFS_BIG_INUMS | |
1137 | fakeinos += mp->m_inoadd; | |
1138 | #endif | |
1139 | statp->f_files = | |
1140 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1141 | if (mp->m_maxicount) | |
1142 | #if XFS_BIG_INUMS | |
1143 | if (!mp->m_inoadd) | |
1144 | #endif | |
1145 | statp->f_files = min_t(typeof(statp->f_files), | |
1146 | statp->f_files, | |
1147 | mp->m_maxicount); | |
1148 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1149 | spin_unlock(&mp->m_sb_lock); | |
1150 | ||
1151 | XFS_QM_DQSTATVFS(XFS_I(dentry->d_inode), statp); | |
1152 | return 0; | |
1da177e4 LT |
1153 | } |
1154 | ||
1155 | STATIC int | |
a50cd269 | 1156 | xfs_fs_remount( |
1da177e4 LT |
1157 | struct super_block *sb, |
1158 | int *flags, | |
1159 | char *options) | |
1160 | { | |
745f6919 | 1161 | struct xfs_mount *mp = XFS_M(sb); |
764d1f89 | 1162 | struct xfs_mount_args *args = xfs_args_allocate(sb, 0); |
1da177e4 LT |
1163 | int error; |
1164 | ||
745f6919 | 1165 | error = xfs_parseargs(mp, options, args, 1); |
1da177e4 | 1166 | if (!error) |
745f6919 | 1167 | error = xfs_mntupdate(mp, flags, args); |
1da177e4 LT |
1168 | kmem_free(args, sizeof(*args)); |
1169 | return -error; | |
1170 | } | |
1171 | ||
9909c4aa CH |
1172 | /* |
1173 | * Second stage of a freeze. The data is already frozen so we only | |
1174 | * need to take care of themetadata. Once that's done write a dummy | |
1175 | * record to dirty the log in case of a crash while frozen. | |
1176 | */ | |
1da177e4 | 1177 | STATIC void |
a50cd269 | 1178 | xfs_fs_lockfs( |
1da177e4 LT |
1179 | struct super_block *sb) |
1180 | { | |
9909c4aa CH |
1181 | struct xfs_mount *mp = XFS_M(sb); |
1182 | ||
1183 | xfs_attr_quiesce(mp); | |
1184 | xfs_fs_log_dummy(mp); | |
1da177e4 LT |
1185 | } |
1186 | ||
1187 | STATIC int | |
a50cd269 | 1188 | xfs_fs_show_options( |
1da177e4 LT |
1189 | struct seq_file *m, |
1190 | struct vfsmount *mnt) | |
1191 | { | |
745f6919 | 1192 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1193 | } |
1194 | ||
ee34807a | 1195 | STATIC int |
a50cd269 | 1196 | xfs_fs_quotasync( |
ee34807a NS |
1197 | struct super_block *sb, |
1198 | int type) | |
1199 | { | |
b09cc771 | 1200 | return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XQUOTASYNC, 0, NULL); |
ee34807a NS |
1201 | } |
1202 | ||
1da177e4 | 1203 | STATIC int |
a50cd269 | 1204 | xfs_fs_getxstate( |
1da177e4 LT |
1205 | struct super_block *sb, |
1206 | struct fs_quota_stat *fqs) | |
1207 | { | |
b09cc771 | 1208 | return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XGETQSTAT, 0, (caddr_t)fqs); |
1da177e4 LT |
1209 | } |
1210 | ||
1211 | STATIC int | |
a50cd269 | 1212 | xfs_fs_setxstate( |
1da177e4 LT |
1213 | struct super_block *sb, |
1214 | unsigned int flags, | |
1215 | int op) | |
1216 | { | |
b09cc771 | 1217 | return -XFS_QM_QUOTACTL(XFS_M(sb), op, 0, (caddr_t)&flags); |
1da177e4 LT |
1218 | } |
1219 | ||
1220 | STATIC int | |
a50cd269 | 1221 | xfs_fs_getxquota( |
1da177e4 LT |
1222 | struct super_block *sb, |
1223 | int type, | |
1224 | qid_t id, | |
1225 | struct fs_disk_quota *fdq) | |
1226 | { | |
b09cc771 | 1227 | return -XFS_QM_QUOTACTL(XFS_M(sb), |
b83bd138 NS |
1228 | (type == USRQUOTA) ? Q_XGETQUOTA : |
1229 | ((type == GRPQUOTA) ? Q_XGETGQUOTA : | |
1230 | Q_XGETPQUOTA), id, (caddr_t)fdq); | |
1da177e4 LT |
1231 | } |
1232 | ||
1233 | STATIC int | |
a50cd269 | 1234 | xfs_fs_setxquota( |
1da177e4 LT |
1235 | struct super_block *sb, |
1236 | int type, | |
1237 | qid_t id, | |
1238 | struct fs_disk_quota *fdq) | |
1239 | { | |
b09cc771 | 1240 | return -XFS_QM_QUOTACTL(XFS_M(sb), |
b83bd138 NS |
1241 | (type == USRQUOTA) ? Q_XSETQLIM : |
1242 | ((type == GRPQUOTA) ? Q_XSETGQLIM : | |
1243 | Q_XSETPQLIM), id, (caddr_t)fdq); | |
1da177e4 LT |
1244 | } |
1245 | ||
1246 | STATIC int | |
a50cd269 | 1247 | xfs_fs_fill_super( |
1da177e4 LT |
1248 | struct super_block *sb, |
1249 | void *data, | |
1250 | int silent) | |
1251 | { | |
0a74cd19 | 1252 | struct inode *rootvp; |
745f6919 | 1253 | struct xfs_mount *mp = NULL; |
764d1f89 | 1254 | struct xfs_mount_args *args = xfs_args_allocate(sb, silent); |
b83bd138 | 1255 | int error; |
1da177e4 | 1256 | |
745f6919 | 1257 | mp = xfs_mount_init(); |
1da177e4 | 1258 | |
74394496 CH |
1259 | INIT_LIST_HEAD(&mp->m_sync_list); |
1260 | spin_lock_init(&mp->m_sync_lock); | |
1261 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1262 | ||
b267ce99 CH |
1263 | mp->m_super = sb; |
1264 | sb->s_fs_info = mp; | |
1da177e4 | 1265 | |
bd186aa9 CH |
1266 | if (sb->s_flags & MS_RDONLY) |
1267 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
1268 | ||
745f6919 CH |
1269 | error = xfs_parseargs(mp, (char *)data, args, 0); |
1270 | if (error) | |
1da177e4 | 1271 | goto fail_vfsop; |
1da177e4 LT |
1272 | |
1273 | sb_min_blocksize(sb, BBSIZE); | |
a50cd269 | 1274 | sb->s_export_op = &xfs_export_operations; |
a50cd269 NS |
1275 | sb->s_qcop = &xfs_quotactl_operations; |
1276 | sb->s_op = &xfs_super_operations; | |
1da177e4 | 1277 | |
745f6919 CH |
1278 | error = xfs_mount(mp, args, NULL); |
1279 | if (error) | |
1da177e4 | 1280 | goto fail_vfsop; |
1da177e4 | 1281 | |
1da177e4 | 1282 | sb->s_dirt = 1; |
4ca488eb CH |
1283 | sb->s_magic = XFS_SB_MAGIC; |
1284 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1285 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1286 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1287 | sb->s_time_gran = 1; | |
1288 | set_posix_acl_flag(sb); | |
1289 | ||
745f6919 | 1290 | error = xfs_root(mp, &rootvp); |
1da177e4 LT |
1291 | if (error) |
1292 | goto fail_unmount; | |
1293 | ||
ec86dc02 | 1294 | sb->s_root = d_alloc_root(vn_to_inode(rootvp)); |
1da177e4 LT |
1295 | if (!sb->s_root) { |
1296 | error = ENOMEM; | |
1297 | goto fail_vnrele; | |
1298 | } | |
1299 | if (is_bad_inode(sb->s_root->d_inode)) { | |
1300 | error = EINVAL; | |
1301 | goto fail_vnrele; | |
1302 | } | |
74394496 CH |
1303 | |
1304 | mp->m_sync_work.w_syncer = xfs_sync_worker; | |
1305 | mp->m_sync_work.w_mount = mp; | |
1306 | mp->m_sync_task = kthread_run(xfssyncd, mp, "xfssyncd"); | |
1307 | if (IS_ERR(mp->m_sync_task)) { | |
1308 | error = -PTR_ERR(mp->m_sync_task); | |
1da177e4 | 1309 | goto fail_vnrele; |
74394496 CH |
1310 | } |
1311 | ||
cf441eeb | 1312 | xfs_itrace_exit(XFS_I(sb->s_root->d_inode)); |
1da177e4 LT |
1313 | |
1314 | kmem_free(args, sizeof(*args)); | |
1315 | return 0; | |
1316 | ||
1317 | fail_vnrele: | |
1318 | if (sb->s_root) { | |
1319 | dput(sb->s_root); | |
1320 | sb->s_root = NULL; | |
1321 | } else { | |
1322 | VN_RELE(rootvp); | |
1323 | } | |
1324 | ||
1325 | fail_unmount: | |
745f6919 | 1326 | xfs_unmount(mp, 0, NULL); |
1da177e4 LT |
1327 | |
1328 | fail_vfsop: | |
1da177e4 LT |
1329 | kmem_free(args, sizeof(*args)); |
1330 | return -error; | |
1331 | } | |
1332 | ||
454e2398 | 1333 | STATIC int |
a50cd269 | 1334 | xfs_fs_get_sb( |
1da177e4 LT |
1335 | struct file_system_type *fs_type, |
1336 | int flags, | |
1337 | const char *dev_name, | |
454e2398 DH |
1338 | void *data, |
1339 | struct vfsmount *mnt) | |
1da177e4 | 1340 | { |
454e2398 DH |
1341 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
1342 | mnt); | |
a50cd269 NS |
1343 | } |
1344 | ||
7989cb8e | 1345 | static struct super_operations xfs_super_operations = { |
a50cd269 NS |
1346 | .alloc_inode = xfs_fs_alloc_inode, |
1347 | .destroy_inode = xfs_fs_destroy_inode, | |
1348 | .write_inode = xfs_fs_write_inode, | |
1349 | .clear_inode = xfs_fs_clear_inode, | |
1350 | .put_super = xfs_fs_put_super, | |
1351 | .write_super = xfs_fs_write_super, | |
1352 | .sync_fs = xfs_fs_sync_super, | |
1353 | .write_super_lockfs = xfs_fs_lockfs, | |
1354 | .statfs = xfs_fs_statfs, | |
1355 | .remount_fs = xfs_fs_remount, | |
1356 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1357 | }; |
1358 | ||
7989cb8e | 1359 | static struct quotactl_ops xfs_quotactl_operations = { |
a50cd269 NS |
1360 | .quota_sync = xfs_fs_quotasync, |
1361 | .get_xstate = xfs_fs_getxstate, | |
1362 | .set_xstate = xfs_fs_setxstate, | |
1363 | .get_xquota = xfs_fs_getxquota, | |
1364 | .set_xquota = xfs_fs_setxquota, | |
1da177e4 LT |
1365 | }; |
1366 | ||
5085b607 | 1367 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1368 | .owner = THIS_MODULE, |
1369 | .name = "xfs", | |
a50cd269 | 1370 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
1371 | .kill_sb = kill_block_super, |
1372 | .fs_flags = FS_REQUIRES_DEV, | |
1373 | }; | |
1374 | ||
1375 | ||
1376 | STATIC int __init | |
1377 | init_xfs_fs( void ) | |
1378 | { | |
1379 | int error; | |
1da177e4 LT |
1380 | static char message[] __initdata = KERN_INFO \ |
1381 | XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n"; | |
1382 | ||
1383 | printk(message); | |
1384 | ||
1da177e4 LT |
1385 | ktrace_init(64); |
1386 | ||
8758280f | 1387 | error = xfs_init_zones(); |
1da177e4 | 1388 | if (error < 0) |
0829c360 | 1389 | goto undo_zones; |
1da177e4 | 1390 | |
ce8e922c | 1391 | error = xfs_buf_init(); |
1da177e4 | 1392 | if (error < 0) |
ce8e922c | 1393 | goto undo_buffers; |
1da177e4 LT |
1394 | |
1395 | vn_init(); | |
1396 | xfs_init(); | |
1397 | uuid_init(); | |
1398 | vfs_initquota(); | |
1399 | ||
1400 | error = register_filesystem(&xfs_fs_type); | |
1401 | if (error) | |
1402 | goto undo_register; | |
1da177e4 LT |
1403 | return 0; |
1404 | ||
1405 | undo_register: | |
ce8e922c | 1406 | xfs_buf_terminate(); |
1da177e4 | 1407 | |
ce8e922c | 1408 | undo_buffers: |
8758280f | 1409 | xfs_destroy_zones(); |
1da177e4 | 1410 | |
0829c360 | 1411 | undo_zones: |
1da177e4 LT |
1412 | return error; |
1413 | } | |
1414 | ||
1415 | STATIC void __exit | |
1416 | exit_xfs_fs( void ) | |
1417 | { | |
1418 | vfs_exitquota(); | |
1da177e4 LT |
1419 | unregister_filesystem(&xfs_fs_type); |
1420 | xfs_cleanup(); | |
ce8e922c | 1421 | xfs_buf_terminate(); |
8758280f | 1422 | xfs_destroy_zones(); |
1da177e4 LT |
1423 | ktrace_uninit(); |
1424 | } | |
1425 | ||
1426 | module_init(init_xfs_fs); | |
1427 | module_exit(exit_xfs_fs); | |
1428 | ||
1429 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1430 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1431 | MODULE_LICENSE("GPL"); |