Commit | Line | Data |
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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" |
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 |
71 | static struct quotactl_ops xfs_quotactl_operations; |
72 | static struct super_operations xfs_super_operations; | |
73 | static kmem_zone_t *xfs_vnode_zone; | |
74 | static kmem_zone_t *xfs_ioend_zone; | |
0829c360 | 75 | mempool_t *xfs_ioend_pool; |
1da177e4 LT |
76 | |
77 | STATIC struct xfs_mount_args * | |
78 | xfs_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 | */ | |
157 | enum { | |
158 | Opt_barrier, Opt_nobarrier, Opt_err | |
159 | }; | |
160 | ||
161 | static match_table_t tokens = { | |
162 | {Opt_barrier, "barrier"}, | |
163 | {Opt_nobarrier, "nobarrier"}, | |
164 | {Opt_err, NULL} | |
165 | }; | |
166 | ||
167 | ||
a67d7c5f DC |
168 | STATIC unsigned long |
169 | suffix_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 | ||
191 | STATIC int | |
192 | xfs_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 | ||
457 | done: | |
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 | ||
465 | struct proc_xfs_info { | |
466 | int flag; | |
467 | char *str; | |
468 | }; | |
469 | ||
470 | STATIC int | |
471 | xfs_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 |
551 | xfs_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 | 584 | STATIC_INLINE void |
1da177e4 LT |
585 | xfs_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 | 613 | STATIC_INLINE void |
1da177e4 LT |
614 | xfs_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 | ||
665 | void | |
666 | xfs_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 | ||
696 | int | |
697 | xfs_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 | ||
713 | void | |
714 | xfs_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 | */ | |
724 | STATIC int | |
725 | xfs_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 | ||
755 | void | |
756 | xfs_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 | ||
783 | void | |
784 | xfs_blkdev_issue_flush( | |
785 | xfs_buftarg_t *buftarg) | |
786 | { | |
ce8e922c | 787 | blkdev_issue_flush(buftarg->bt_bdev, NULL); |
f538d4da | 788 | } |
1da177e4 | 789 | |
19f354d4 CH |
790 | STATIC void |
791 | xfs_close_devices( | |
792 | struct xfs_mount *mp) | |
793 | { | |
794 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 795 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
19f354d4 | 796 | xfs_free_buftarg(mp->m_logdev_targp); |
c032bfcf | 797 | xfs_blkdev_put(logdev); |
19f354d4 CH |
798 | } |
799 | if (mp->m_rtdev_targp) { | |
c032bfcf | 800 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
19f354d4 | 801 | xfs_free_buftarg(mp->m_rtdev_targp); |
c032bfcf | 802 | xfs_blkdev_put(rtdev); |
19f354d4 CH |
803 | } |
804 | xfs_free_buftarg(mp->m_ddev_targp); | |
805 | } | |
806 | ||
807 | /* | |
808 | * The file system configurations are: | |
809 | * (1) device (partition) with data and internal log | |
810 | * (2) logical volume with data and log subvolumes. | |
811 | * (3) logical volume with data, log, and realtime subvolumes. | |
812 | * | |
813 | * We only have to handle opening the log and realtime volumes here if | |
814 | * they are present. The data subvolume has already been opened by | |
815 | * get_sb_bdev() and is stored in sb->s_bdev. | |
816 | */ | |
817 | STATIC int | |
818 | xfs_open_devices( | |
819 | struct xfs_mount *mp, | |
820 | struct xfs_mount_args *args) | |
821 | { | |
822 | struct block_device *ddev = mp->m_super->s_bdev; | |
823 | struct block_device *logdev = NULL, *rtdev = NULL; | |
824 | int error; | |
825 | ||
826 | /* | |
827 | * Open real time and log devices - order is important. | |
828 | */ | |
829 | if (args->logname[0]) { | |
830 | error = xfs_blkdev_get(mp, args->logname, &logdev); | |
831 | if (error) | |
832 | goto out; | |
833 | } | |
834 | ||
835 | if (args->rtname[0]) { | |
836 | error = xfs_blkdev_get(mp, args->rtname, &rtdev); | |
837 | if (error) | |
838 | goto out_close_logdev; | |
839 | ||
840 | if (rtdev == ddev || rtdev == logdev) { | |
841 | cmn_err(CE_WARN, | |
842 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
843 | error = EINVAL; | |
844 | goto out_close_rtdev; | |
845 | } | |
846 | } | |
847 | ||
848 | /* | |
849 | * Setup xfs_mount buffer target pointers | |
850 | */ | |
851 | error = ENOMEM; | |
852 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); | |
853 | if (!mp->m_ddev_targp) | |
854 | goto out_close_rtdev; | |
855 | ||
856 | if (rtdev) { | |
857 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); | |
858 | if (!mp->m_rtdev_targp) | |
859 | goto out_free_ddev_targ; | |
860 | } | |
861 | ||
862 | if (logdev && logdev != ddev) { | |
863 | mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1); | |
864 | if (!mp->m_logdev_targp) | |
865 | goto out_free_rtdev_targ; | |
866 | } else { | |
867 | mp->m_logdev_targp = mp->m_ddev_targp; | |
868 | } | |
869 | ||
870 | return 0; | |
871 | ||
872 | out_free_rtdev_targ: | |
873 | if (mp->m_rtdev_targp) | |
874 | xfs_free_buftarg(mp->m_rtdev_targp); | |
875 | out_free_ddev_targ: | |
876 | xfs_free_buftarg(mp->m_ddev_targp); | |
877 | out_close_rtdev: | |
878 | if (rtdev) | |
879 | xfs_blkdev_put(rtdev); | |
880 | out_close_logdev: | |
881 | if (logdev && logdev != ddev) | |
882 | xfs_blkdev_put(logdev); | |
883 | out: | |
884 | return error; | |
885 | } | |
886 | ||
e34b562c CH |
887 | /* |
888 | * Setup xfs_mount buffer target pointers based on superblock | |
889 | */ | |
890 | STATIC int | |
891 | xfs_setup_devices( | |
892 | struct xfs_mount *mp) | |
893 | { | |
894 | int error; | |
19f354d4 | 895 | |
e34b562c CH |
896 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
897 | mp->m_sb.sb_sectsize); | |
898 | if (error) | |
899 | return error; | |
900 | ||
901 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
902 | unsigned int log_sector_size = BBSIZE; | |
903 | ||
904 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
905 | log_sector_size = mp->m_sb.sb_logsectsize; | |
906 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
907 | mp->m_sb.sb_blocksize, | |
908 | log_sector_size); | |
909 | if (error) | |
910 | return error; | |
911 | } | |
912 | if (mp->m_rtdev_targp) { | |
913 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
914 | mp->m_sb.sb_blocksize, | |
915 | mp->m_sb.sb_sectsize); | |
916 | if (error) | |
917 | return error; | |
918 | } | |
919 | ||
920 | return 0; | |
921 | } | |
19f354d4 | 922 | |
249a8c11 DC |
923 | /* |
924 | * XFS AIL push thread support | |
925 | */ | |
926 | void | |
927 | xfsaild_wakeup( | |
928 | xfs_mount_t *mp, | |
929 | xfs_lsn_t threshold_lsn) | |
930 | { | |
931 | mp->m_ail.xa_target = threshold_lsn; | |
932 | wake_up_process(mp->m_ail.xa_task); | |
933 | } | |
934 | ||
935 | int | |
936 | xfsaild( | |
937 | void *data) | |
938 | { | |
939 | xfs_mount_t *mp = (xfs_mount_t *)data; | |
940 | xfs_lsn_t last_pushed_lsn = 0; | |
941 | long tout = 0; | |
942 | ||
943 | while (!kthread_should_stop()) { | |
944 | if (tout) | |
945 | schedule_timeout_interruptible(msecs_to_jiffies(tout)); | |
946 | tout = 1000; | |
947 | ||
948 | /* swsusp */ | |
949 | try_to_freeze(); | |
950 | ||
951 | ASSERT(mp->m_log); | |
952 | if (XFS_FORCED_SHUTDOWN(mp)) | |
953 | continue; | |
954 | ||
955 | tout = xfsaild_push(mp, &last_pushed_lsn); | |
956 | } | |
957 | ||
958 | return 0; | |
959 | } /* xfsaild */ | |
960 | ||
961 | int | |
962 | xfsaild_start( | |
963 | xfs_mount_t *mp) | |
964 | { | |
965 | mp->m_ail.xa_target = 0; | |
966 | mp->m_ail.xa_task = kthread_run(xfsaild, mp, "xfsaild"); | |
967 | if (IS_ERR(mp->m_ail.xa_task)) | |
968 | return -PTR_ERR(mp->m_ail.xa_task); | |
969 | return 0; | |
970 | } | |
971 | ||
972 | void | |
973 | xfsaild_stop( | |
974 | xfs_mount_t *mp) | |
975 | { | |
976 | kthread_stop(mp->m_ail.xa_task); | |
977 | } | |
978 | ||
979 | ||
980 | ||
1da177e4 | 981 | STATIC struct inode * |
a50cd269 | 982 | xfs_fs_alloc_inode( |
1da177e4 LT |
983 | struct super_block *sb) |
984 | { | |
67fcaa73 | 985 | bhv_vnode_t *vp; |
1da177e4 | 986 | |
8758280f NS |
987 | vp = kmem_zone_alloc(xfs_vnode_zone, KM_SLEEP); |
988 | if (unlikely(!vp)) | |
1da177e4 | 989 | return NULL; |
ec86dc02 | 990 | return vn_to_inode(vp); |
1da177e4 LT |
991 | } |
992 | ||
993 | STATIC void | |
a50cd269 | 994 | xfs_fs_destroy_inode( |
1da177e4 LT |
995 | struct inode *inode) |
996 | { | |
ec86dc02 | 997 | kmem_zone_free(xfs_vnode_zone, vn_from_inode(inode)); |
1da177e4 LT |
998 | } |
999 | ||
1000 | STATIC void | |
a50cd269 | 1001 | xfs_fs_inode_init_once( |
4ba9b9d0 | 1002 | void *vnode) |
1da177e4 | 1003 | { |
a35afb83 | 1004 | inode_init_once(vn_to_inode((bhv_vnode_t *)vnode)); |
1da177e4 LT |
1005 | } |
1006 | ||
1da177e4 LT |
1007 | /* |
1008 | * Attempt to flush the inode, this will actually fail | |
1009 | * if the inode is pinned, but we dirty the inode again | |
1010 | * at the point when it is unpinned after a log write, | |
8758280f | 1011 | * since this is when the inode itself becomes flushable. |
1da177e4 LT |
1012 | */ |
1013 | STATIC int | |
a50cd269 | 1014 | xfs_fs_write_inode( |
1da177e4 LT |
1015 | struct inode *inode, |
1016 | int sync) | |
1017 | { | |
a3f74ffb DC |
1018 | int error = 0; |
1019 | int flags = 0; | |
1da177e4 | 1020 | |
cf441eeb | 1021 | xfs_itrace_entry(XFS_I(inode)); |
739bfb2a CH |
1022 | if (sync) { |
1023 | filemap_fdatawait(inode->i_mapping); | |
1024 | flags |= FLUSH_SYNC; | |
1da177e4 | 1025 | } |
739bfb2a | 1026 | error = xfs_inode_flush(XFS_I(inode), flags); |
e893bffd LM |
1027 | /* |
1028 | * if we failed to write out the inode then mark | |
1029 | * it dirty again so we'll try again later. | |
1030 | */ | |
1031 | if (error) | |
1032 | mark_inode_dirty_sync(inode); | |
739bfb2a | 1033 | |
1da177e4 LT |
1034 | return -error; |
1035 | } | |
1036 | ||
1037 | STATIC void | |
a50cd269 | 1038 | xfs_fs_clear_inode( |
1da177e4 LT |
1039 | struct inode *inode) |
1040 | { | |
1543d79c | 1041 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1042 | |
02ba71de | 1043 | /* |
1543d79c | 1044 | * ip can be null when xfs_iget_core calls xfs_idestroy if we |
02ba71de CH |
1045 | * find an inode with di_mode == 0 but without IGET_CREATE set. |
1046 | */ | |
1543d79c | 1047 | if (ip) { |
cf441eeb | 1048 | xfs_itrace_entry(ip); |
1543d79c CH |
1049 | XFS_STATS_INC(vn_rele); |
1050 | XFS_STATS_INC(vn_remove); | |
1051 | XFS_STATS_INC(vn_reclaim); | |
1052 | XFS_STATS_DEC(vn_active); | |
1053 | ||
1054 | xfs_inactive(ip); | |
1055 | xfs_iflags_clear(ip, XFS_IMODIFIED); | |
1056 | if (xfs_reclaim(ip)) | |
34a622b2 | 1057 | panic("%s: cannot reclaim 0x%p\n", __func__, inode); |
b3aea4ed | 1058 | } |
56d433e4 | 1059 | |
739bfb2a | 1060 | ASSERT(XFS_I(inode) == NULL); |
56d433e4 | 1061 | } |
1da177e4 LT |
1062 | |
1063 | /* | |
1064 | * Enqueue a work item to be picked up by the vfs xfssyncd thread. | |
1065 | * Doing this has two advantages: | |
1066 | * - It saves on stack space, which is tight in certain situations | |
1067 | * - It can be used (with care) as a mechanism to avoid deadlocks. | |
1068 | * Flushing while allocating in a full filesystem requires both. | |
1069 | */ | |
1070 | STATIC void | |
1071 | xfs_syncd_queue_work( | |
74394496 | 1072 | struct xfs_mount *mp, |
1da177e4 | 1073 | void *data, |
74394496 | 1074 | void (*syncer)(struct xfs_mount *, void *)) |
1da177e4 | 1075 | { |
b83bd138 | 1076 | struct bhv_vfs_sync_work *work; |
1da177e4 | 1077 | |
b83bd138 | 1078 | work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP); |
1da177e4 LT |
1079 | INIT_LIST_HEAD(&work->w_list); |
1080 | work->w_syncer = syncer; | |
1081 | work->w_data = data; | |
74394496 CH |
1082 | work->w_mount = mp; |
1083 | spin_lock(&mp->m_sync_lock); | |
1084 | list_add_tail(&work->w_list, &mp->m_sync_list); | |
1085 | spin_unlock(&mp->m_sync_lock); | |
1086 | wake_up_process(mp->m_sync_task); | |
1da177e4 LT |
1087 | } |
1088 | ||
1089 | /* | |
1090 | * Flush delayed allocate data, attempting to free up reserved space | |
1091 | * from existing allocations. At this point a new allocation attempt | |
1092 | * has failed with ENOSPC and we are in the process of scratching our | |
1093 | * heads, looking about for more room... | |
1094 | */ | |
1095 | STATIC void | |
1096 | xfs_flush_inode_work( | |
74394496 CH |
1097 | struct xfs_mount *mp, |
1098 | void *arg) | |
1da177e4 | 1099 | { |
74394496 CH |
1100 | struct inode *inode = arg; |
1101 | filemap_flush(inode->i_mapping); | |
1102 | iput(inode); | |
1da177e4 LT |
1103 | } |
1104 | ||
1105 | void | |
1106 | xfs_flush_inode( | |
1107 | xfs_inode_t *ip) | |
1108 | { | |
74394496 | 1109 | struct inode *inode = ip->i_vnode; |
1da177e4 LT |
1110 | |
1111 | igrab(inode); | |
74394496 | 1112 | xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inode_work); |
041e0e3b | 1113 | delay(msecs_to_jiffies(500)); |
1da177e4 LT |
1114 | } |
1115 | ||
1116 | /* | |
1117 | * This is the "bigger hammer" version of xfs_flush_inode_work... | |
1118 | * (IOW, "If at first you don't succeed, use a Bigger Hammer"). | |
1119 | */ | |
1120 | STATIC void | |
1121 | xfs_flush_device_work( | |
74394496 CH |
1122 | struct xfs_mount *mp, |
1123 | void *arg) | |
1da177e4 | 1124 | { |
74394496 | 1125 | struct inode *inode = arg; |
b267ce99 | 1126 | sync_blockdev(mp->m_super->s_bdev); |
74394496 | 1127 | iput(inode); |
1da177e4 LT |
1128 | } |
1129 | ||
1130 | void | |
1131 | xfs_flush_device( | |
1132 | xfs_inode_t *ip) | |
1133 | { | |
ec86dc02 | 1134 | struct inode *inode = vn_to_inode(XFS_ITOV(ip)); |
1da177e4 LT |
1135 | |
1136 | igrab(inode); | |
74394496 | 1137 | xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_device_work); |
041e0e3b | 1138 | delay(msecs_to_jiffies(500)); |
1da177e4 LT |
1139 | xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC); |
1140 | } | |
1141 | ||
1da177e4 | 1142 | STATIC void |
74394496 CH |
1143 | xfs_sync_worker( |
1144 | struct xfs_mount *mp, | |
1da177e4 LT |
1145 | void *unused) |
1146 | { | |
1147 | int error; | |
1148 | ||
74394496 | 1149 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) |
7e20694d | 1150 | error = xfs_sync(mp, SYNC_FSDATA | SYNC_BDFLUSH | SYNC_ATTR); |
74394496 CH |
1151 | mp->m_sync_seq++; |
1152 | wake_up(&mp->m_wait_single_sync_task); | |
1da177e4 LT |
1153 | } |
1154 | ||
1155 | STATIC int | |
1156 | xfssyncd( | |
1157 | void *arg) | |
1158 | { | |
74394496 | 1159 | struct xfs_mount *mp = arg; |
1da177e4 | 1160 | long timeleft; |
b83bd138 | 1161 | bhv_vfs_sync_work_t *work, *n; |
4df08c52 | 1162 | LIST_HEAD (tmp); |
1da177e4 | 1163 | |
83144186 | 1164 | set_freezable(); |
041e0e3b | 1165 | timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10); |
1da177e4 | 1166 | for (;;) { |
041e0e3b | 1167 | timeleft = schedule_timeout_interruptible(timeleft); |
1da177e4 | 1168 | /* swsusp */ |
3e1d1d28 | 1169 | try_to_freeze(); |
74394496 | 1170 | if (kthread_should_stop() && list_empty(&mp->m_sync_list)) |
1da177e4 LT |
1171 | break; |
1172 | ||
74394496 | 1173 | spin_lock(&mp->m_sync_lock); |
1da177e4 LT |
1174 | /* |
1175 | * We can get woken by laptop mode, to do a sync - | |
1176 | * that's the (only!) case where the list would be | |
1177 | * empty with time remaining. | |
1178 | */ | |
74394496 | 1179 | if (!timeleft || list_empty(&mp->m_sync_list)) { |
1da177e4 | 1180 | if (!timeleft) |
041e0e3b NA |
1181 | timeleft = xfs_syncd_centisecs * |
1182 | msecs_to_jiffies(10); | |
74394496 CH |
1183 | INIT_LIST_HEAD(&mp->m_sync_work.w_list); |
1184 | list_add_tail(&mp->m_sync_work.w_list, | |
1185 | &mp->m_sync_list); | |
1da177e4 | 1186 | } |
74394496 | 1187 | list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list) |
1da177e4 | 1188 | list_move(&work->w_list, &tmp); |
74394496 | 1189 | spin_unlock(&mp->m_sync_lock); |
1da177e4 LT |
1190 | |
1191 | list_for_each_entry_safe(work, n, &tmp, w_list) { | |
74394496 | 1192 | (*work->w_syncer)(mp, work->w_data); |
1da177e4 | 1193 | list_del(&work->w_list); |
74394496 | 1194 | if (work == &mp->m_sync_work) |
1da177e4 | 1195 | continue; |
f0e2d93c | 1196 | kmem_free(work); |
1da177e4 LT |
1197 | } |
1198 | } | |
1199 | ||
1da177e4 LT |
1200 | return 0; |
1201 | } | |
1202 | ||
1da177e4 | 1203 | STATIC void |
a50cd269 | 1204 | xfs_fs_put_super( |
1da177e4 LT |
1205 | struct super_block *sb) |
1206 | { | |
745f6919 | 1207 | struct xfs_mount *mp = XFS_M(sb); |
e48ad316 CH |
1208 | struct xfs_inode *rip = mp->m_rootip; |
1209 | int unmount_event_flags = 0; | |
1da177e4 LT |
1210 | int error; |
1211 | ||
74394496 CH |
1212 | kthread_stop(mp->m_sync_task); |
1213 | ||
745f6919 | 1214 | xfs_sync(mp, SYNC_ATTR | SYNC_DELWRI); |
e48ad316 CH |
1215 | |
1216 | #ifdef HAVE_DMAPI | |
1217 | if (mp->m_flags & XFS_MOUNT_DMAPI) { | |
1218 | unmount_event_flags = | |
1219 | (mp->m_dmevmask & (1 << DM_EVENT_UNMOUNT)) ? | |
1220 | 0 : DM_FLAGS_UNWANTED; | |
1221 | /* | |
1222 | * Ignore error from dmapi here, first unmount is not allowed | |
1223 | * to fail anyway, and second we wouldn't want to fail a | |
1224 | * unmount because of dmapi. | |
1225 | */ | |
1226 | XFS_SEND_PREUNMOUNT(mp, rip, DM_RIGHT_NULL, rip, DM_RIGHT_NULL, | |
1227 | NULL, NULL, 0, 0, unmount_event_flags); | |
1228 | } | |
1229 | #endif | |
1230 | ||
1231 | /* | |
1232 | * Blow away any referenced inode in the filestreams cache. | |
1233 | * This can and will cause log traffic as inodes go inactive | |
1234 | * here. | |
1235 | */ | |
1236 | xfs_filestream_unmount(mp); | |
1237 | ||
1238 | XFS_bflush(mp->m_ddev_targp); | |
1239 | error = xfs_unmount_flush(mp, 0); | |
1240 | WARN_ON(error); | |
1241 | ||
1242 | IRELE(rip); | |
1243 | ||
1244 | /* | |
1245 | * If we're forcing a shutdown, typically because of a media error, | |
1246 | * we want to make sure we invalidate dirty pages that belong to | |
1247 | * referenced vnodes as well. | |
1248 | */ | |
1249 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
1250 | error = xfs_sync(mp, SYNC_WAIT | SYNC_CLOSE); | |
1251 | ASSERT(error != EFSCORRUPTED); | |
1252 | } | |
1253 | ||
1254 | if (mp->m_flags & XFS_MOUNT_DMAPI) { | |
1255 | XFS_SEND_UNMOUNT(mp, rip, DM_RIGHT_NULL, 0, 0, | |
1256 | unmount_event_flags); | |
1257 | } | |
1258 | ||
19f354d4 | 1259 | xfs_unmountfs(mp); |
c962fb79 | 1260 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1261 | xfs_close_devices(mp); |
e48ad316 CH |
1262 | xfs_qmops_put(mp); |
1263 | xfs_dmops_put(mp); | |
c962fb79 | 1264 | kfree(mp); |
1da177e4 LT |
1265 | } |
1266 | ||
1267 | STATIC void | |
a50cd269 | 1268 | xfs_fs_write_super( |
1da177e4 LT |
1269 | struct super_block *sb) |
1270 | { | |
b83bd138 | 1271 | if (!(sb->s_flags & MS_RDONLY)) |
745f6919 | 1272 | xfs_sync(XFS_M(sb), SYNC_FSDATA); |
1da177e4 LT |
1273 | sb->s_dirt = 0; |
1274 | } | |
1275 | ||
1276 | STATIC int | |
a50cd269 | 1277 | xfs_fs_sync_super( |
1da177e4 LT |
1278 | struct super_block *sb, |
1279 | int wait) | |
1280 | { | |
745f6919 | 1281 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 NS |
1282 | int error; |
1283 | int flags; | |
1da177e4 | 1284 | |
e893bffd LM |
1285 | /* |
1286 | * Treat a sync operation like a freeze. This is to work | |
1287 | * around a race in sync_inodes() which works in two phases | |
1288 | * - an asynchronous flush, which can write out an inode | |
1289 | * without waiting for file size updates to complete, and a | |
1290 | * synchronous flush, which wont do anything because the | |
1291 | * async flush removed the inode's dirty flag. Also | |
1292 | * sync_inodes() will not see any files that just have | |
1293 | * outstanding transactions to be flushed because we don't | |
1294 | * dirty the Linux inode until after the transaction I/O | |
1295 | * completes. | |
1296 | */ | |
1297 | if (wait || unlikely(sb->s_frozen == SB_FREEZE_WRITE)) { | |
2823945f DC |
1298 | /* |
1299 | * First stage of freeze - no more writers will make progress | |
1300 | * now we are here, so we flush delwri and delalloc buffers | |
1301 | * here, then wait for all I/O to complete. Data is frozen at | |
1302 | * that point. Metadata is not frozen, transactions can still | |
1303 | * occur here so don't bother flushing the buftarg (i.e | |
1304 | * SYNC_QUIESCE) because it'll just get dirty again. | |
1305 | */ | |
516b2e7c | 1306 | flags = SYNC_DATA_QUIESCE; |
2823945f | 1307 | } else |
e893bffd | 1308 | flags = SYNC_FSDATA; |
1da177e4 | 1309 | |
745f6919 | 1310 | error = xfs_sync(mp, flags); |
1da177e4 LT |
1311 | sb->s_dirt = 0; |
1312 | ||
1313 | if (unlikely(laptop_mode)) { | |
74394496 | 1314 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1315 | |
1316 | /* | |
1317 | * The disk must be active because we're syncing. | |
1318 | * We schedule xfssyncd now (now that the disk is | |
1319 | * active) instead of later (when it might not be). | |
1320 | */ | |
74394496 | 1321 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1322 | /* |
1323 | * We have to wait for the sync iteration to complete. | |
1324 | * If we don't, the disk activity caused by the sync | |
1325 | * will come after the sync is completed, and that | |
1326 | * triggers another sync from laptop mode. | |
1327 | */ | |
74394496 CH |
1328 | wait_event(mp->m_wait_single_sync_task, |
1329 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1330 | } |
1331 | ||
1332 | return -error; | |
1333 | } | |
1334 | ||
1335 | STATIC int | |
a50cd269 | 1336 | xfs_fs_statfs( |
726c3342 | 1337 | struct dentry *dentry, |
1da177e4 LT |
1338 | struct kstatfs *statp) |
1339 | { | |
4ca488eb CH |
1340 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1341 | xfs_sb_t *sbp = &mp->m_sb; | |
1342 | __uint64_t fakeinos, id; | |
1343 | xfs_extlen_t lsize; | |
1344 | ||
1345 | statp->f_type = XFS_SB_MAGIC; | |
1346 | statp->f_namelen = MAXNAMELEN - 1; | |
1347 | ||
1348 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1349 | statp->f_fsid.val[0] = (u32)id; | |
1350 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1351 | ||
d4d90b57 | 1352 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1353 | |
1354 | spin_lock(&mp->m_sb_lock); | |
1355 | statp->f_bsize = sbp->sb_blocksize; | |
1356 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1357 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1358 | statp->f_bfree = statp->f_bavail = | |
1359 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1360 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
1361 | #if XFS_BIG_INUMS | |
1362 | fakeinos += mp->m_inoadd; | |
1363 | #endif | |
1364 | statp->f_files = | |
1365 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1366 | if (mp->m_maxicount) | |
1367 | #if XFS_BIG_INUMS | |
1368 | if (!mp->m_inoadd) | |
1369 | #endif | |
1370 | statp->f_files = min_t(typeof(statp->f_files), | |
1371 | statp->f_files, | |
1372 | mp->m_maxicount); | |
1373 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1374 | spin_unlock(&mp->m_sb_lock); | |
1375 | ||
1376 | XFS_QM_DQSTATVFS(XFS_I(dentry->d_inode), statp); | |
1377 | return 0; | |
1da177e4 LT |
1378 | } |
1379 | ||
1380 | STATIC int | |
a50cd269 | 1381 | xfs_fs_remount( |
1da177e4 LT |
1382 | struct super_block *sb, |
1383 | int *flags, | |
1384 | char *options) | |
1385 | { | |
745f6919 | 1386 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1387 | substring_t args[MAX_OPT_ARGS]; |
1388 | char *p; | |
1da177e4 | 1389 | |
62a877e3 CH |
1390 | while ((p = strsep(&options, ",")) != NULL) { |
1391 | int token; | |
bdd907ba | 1392 | |
62a877e3 CH |
1393 | if (!*p) |
1394 | continue; | |
48b62a1a | 1395 | |
62a877e3 CH |
1396 | token = match_token(p, tokens, args); |
1397 | switch (token) { | |
1398 | case Opt_barrier: | |
48b62a1a | 1399 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1400 | |
1401 | /* | |
1402 | * Test if barriers are actually working if we can, | |
1403 | * else delay this check until the filesystem is | |
1404 | * marked writeable. | |
1405 | */ | |
1406 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) | |
1407 | xfs_mountfs_check_barriers(mp); | |
1408 | break; | |
1409 | case Opt_nobarrier: | |
48b62a1a | 1410 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1411 | break; |
1412 | default: | |
1413 | printk(KERN_INFO | |
1414 | "XFS: mount option \"%s\" not supported for remount\n", p); | |
1415 | return -EINVAL; | |
48b62a1a | 1416 | } |
62a877e3 CH |
1417 | } |
1418 | ||
1419 | /* rw/ro -> rw */ | |
1420 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { | |
1421 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
1422 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1423 | xfs_mountfs_check_barriers(mp); | |
1424 | } | |
1425 | ||
1426 | /* rw -> ro */ | |
1427 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
48b62a1a CH |
1428 | xfs_filestream_flush(mp); |
1429 | xfs_sync(mp, SYNC_DATA_QUIESCE); | |
1430 | xfs_attr_quiesce(mp); | |
1431 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
1432 | } | |
1433 | ||
62a877e3 | 1434 | return 0; |
1da177e4 LT |
1435 | } |
1436 | ||
9909c4aa CH |
1437 | /* |
1438 | * Second stage of a freeze. The data is already frozen so we only | |
1439 | * need to take care of themetadata. Once that's done write a dummy | |
1440 | * record to dirty the log in case of a crash while frozen. | |
1441 | */ | |
1da177e4 | 1442 | STATIC void |
a50cd269 | 1443 | xfs_fs_lockfs( |
1da177e4 LT |
1444 | struct super_block *sb) |
1445 | { | |
9909c4aa CH |
1446 | struct xfs_mount *mp = XFS_M(sb); |
1447 | ||
1448 | xfs_attr_quiesce(mp); | |
1449 | xfs_fs_log_dummy(mp); | |
1da177e4 LT |
1450 | } |
1451 | ||
1452 | STATIC int | |
a50cd269 | 1453 | xfs_fs_show_options( |
1da177e4 LT |
1454 | struct seq_file *m, |
1455 | struct vfsmount *mnt) | |
1456 | { | |
745f6919 | 1457 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1458 | } |
1459 | ||
ee34807a | 1460 | STATIC int |
a50cd269 | 1461 | xfs_fs_quotasync( |
ee34807a NS |
1462 | struct super_block *sb, |
1463 | int type) | |
1464 | { | |
b09cc771 | 1465 | return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XQUOTASYNC, 0, NULL); |
ee34807a NS |
1466 | } |
1467 | ||
1da177e4 | 1468 | STATIC int |
a50cd269 | 1469 | xfs_fs_getxstate( |
1da177e4 LT |
1470 | struct super_block *sb, |
1471 | struct fs_quota_stat *fqs) | |
1472 | { | |
b09cc771 | 1473 | return -XFS_QM_QUOTACTL(XFS_M(sb), Q_XGETQSTAT, 0, (caddr_t)fqs); |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | STATIC int | |
a50cd269 | 1477 | xfs_fs_setxstate( |
1da177e4 LT |
1478 | struct super_block *sb, |
1479 | unsigned int flags, | |
1480 | int op) | |
1481 | { | |
b09cc771 | 1482 | return -XFS_QM_QUOTACTL(XFS_M(sb), op, 0, (caddr_t)&flags); |
1da177e4 LT |
1483 | } |
1484 | ||
1485 | STATIC int | |
a50cd269 | 1486 | xfs_fs_getxquota( |
1da177e4 LT |
1487 | struct super_block *sb, |
1488 | int type, | |
1489 | qid_t id, | |
1490 | struct fs_disk_quota *fdq) | |
1491 | { | |
b09cc771 | 1492 | return -XFS_QM_QUOTACTL(XFS_M(sb), |
b83bd138 NS |
1493 | (type == USRQUOTA) ? Q_XGETQUOTA : |
1494 | ((type == GRPQUOTA) ? Q_XGETGQUOTA : | |
1495 | Q_XGETPQUOTA), id, (caddr_t)fdq); | |
1da177e4 LT |
1496 | } |
1497 | ||
1498 | STATIC int | |
a50cd269 | 1499 | xfs_fs_setxquota( |
1da177e4 LT |
1500 | struct super_block *sb, |
1501 | int type, | |
1502 | qid_t id, | |
1503 | struct fs_disk_quota *fdq) | |
1504 | { | |
b09cc771 | 1505 | return -XFS_QM_QUOTACTL(XFS_M(sb), |
b83bd138 NS |
1506 | (type == USRQUOTA) ? Q_XSETQLIM : |
1507 | ((type == GRPQUOTA) ? Q_XSETGQLIM : | |
1508 | Q_XSETPQLIM), id, (caddr_t)fdq); | |
1da177e4 LT |
1509 | } |
1510 | ||
f8f15e42 CH |
1511 | /* |
1512 | * This function fills in xfs_mount_t fields based on mount args. | |
1513 | * Note: the superblock has _not_ yet been read in. | |
1514 | */ | |
1515 | STATIC int | |
1516 | xfs_start_flags( | |
1517 | struct xfs_mount_args *ap, | |
1518 | struct xfs_mount *mp) | |
1519 | { | |
1520 | /* Values are in BBs */ | |
1521 | if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { | |
1522 | /* | |
1523 | * At this point the superblock has not been read | |
1524 | * in, therefore we do not know the block size. | |
1525 | * Before the mount call ends we will convert | |
1526 | * these to FSBs. | |
1527 | */ | |
1528 | mp->m_dalign = ap->sunit; | |
1529 | mp->m_swidth = ap->swidth; | |
1530 | } | |
1531 | ||
1532 | if (ap->logbufs != -1 && | |
1533 | ap->logbufs != 0 && | |
1534 | (ap->logbufs < XLOG_MIN_ICLOGS || | |
1535 | ap->logbufs > XLOG_MAX_ICLOGS)) { | |
1536 | cmn_err(CE_WARN, | |
1537 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
1538 | ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
1539 | return XFS_ERROR(EINVAL); | |
1540 | } | |
1541 | mp->m_logbufs = ap->logbufs; | |
1542 | if (ap->logbufsize != -1 && | |
1543 | ap->logbufsize != 0 && | |
1544 | (ap->logbufsize < XLOG_MIN_RECORD_BSIZE || | |
1545 | ap->logbufsize > XLOG_MAX_RECORD_BSIZE || | |
1546 | !is_power_of_2(ap->logbufsize))) { | |
1547 | cmn_err(CE_WARN, | |
1548 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
1549 | ap->logbufsize); | |
1550 | return XFS_ERROR(EINVAL); | |
1551 | } | |
1552 | mp->m_logbsize = ap->logbufsize; | |
1553 | mp->m_fsname_len = strlen(ap->fsname) + 1; | |
1554 | mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP); | |
1555 | strcpy(mp->m_fsname, ap->fsname); | |
1556 | if (ap->rtname[0]) { | |
1557 | mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP); | |
1558 | strcpy(mp->m_rtname, ap->rtname); | |
1559 | } | |
1560 | if (ap->logname[0]) { | |
1561 | mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP); | |
1562 | strcpy(mp->m_logname, ap->logname); | |
1563 | } | |
1564 | ||
1565 | if (ap->flags & XFSMNT_WSYNC) | |
1566 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
1567 | #if XFS_BIG_INUMS | |
1568 | if (ap->flags & XFSMNT_INO64) { | |
1569 | mp->m_flags |= XFS_MOUNT_INO64; | |
1570 | mp->m_inoadd = XFS_INO64_OFFSET; | |
1571 | } | |
1572 | #endif | |
1573 | if (ap->flags & XFSMNT_RETERR) | |
1574 | mp->m_flags |= XFS_MOUNT_RETERR; | |
1575 | if (ap->flags & XFSMNT_NOALIGN) | |
1576 | mp->m_flags |= XFS_MOUNT_NOALIGN; | |
1577 | if (ap->flags & XFSMNT_SWALLOC) | |
1578 | mp->m_flags |= XFS_MOUNT_SWALLOC; | |
1579 | if (ap->flags & XFSMNT_OSYNCISOSYNC) | |
1580 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; | |
1581 | if (ap->flags & XFSMNT_32BITINODES) | |
1582 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
1583 | ||
1584 | if (ap->flags & XFSMNT_IOSIZE) { | |
1585 | if (ap->iosizelog > XFS_MAX_IO_LOG || | |
1586 | ap->iosizelog < XFS_MIN_IO_LOG) { | |
1587 | cmn_err(CE_WARN, | |
1588 | "XFS: invalid log iosize: %d [not %d-%d]", | |
1589 | ap->iosizelog, XFS_MIN_IO_LOG, | |
1590 | XFS_MAX_IO_LOG); | |
1591 | return XFS_ERROR(EINVAL); | |
1592 | } | |
1593 | ||
1594 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
1595 | mp->m_readio_log = mp->m_writeio_log = ap->iosizelog; | |
1596 | } | |
1597 | ||
1598 | if (ap->flags & XFSMNT_IKEEP) | |
1599 | mp->m_flags |= XFS_MOUNT_IKEEP; | |
1600 | if (ap->flags & XFSMNT_DIRSYNC) | |
1601 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
1602 | if (ap->flags & XFSMNT_ATTR2) | |
1603 | mp->m_flags |= XFS_MOUNT_ATTR2; | |
1604 | if (ap->flags & XFSMNT_NOATTR2) | |
1605 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
1606 | ||
1607 | if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE) | |
1608 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
1609 | ||
1610 | /* | |
1611 | * no recovery flag requires a read-only mount | |
1612 | */ | |
1613 | if (ap->flags & XFSMNT_NORECOVERY) { | |
1614 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
1615 | cmn_err(CE_WARN, | |
1616 | "XFS: tried to mount a FS read-write without recovery!"); | |
1617 | return XFS_ERROR(EINVAL); | |
1618 | } | |
1619 | mp->m_flags |= XFS_MOUNT_NORECOVERY; | |
1620 | } | |
1621 | ||
1622 | if (ap->flags & XFSMNT_NOUUID) | |
1623 | mp->m_flags |= XFS_MOUNT_NOUUID; | |
1624 | if (ap->flags & XFSMNT_BARRIER) | |
1625 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
1626 | else | |
1627 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
1628 | ||
1629 | if (ap->flags2 & XFSMNT2_FILESTREAMS) | |
1630 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; | |
1631 | ||
1632 | if (ap->flags & XFSMNT_DMAPI) | |
1633 | mp->m_flags |= XFS_MOUNT_DMAPI; | |
1634 | return 0; | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * This function fills in xfs_mount_t fields based on mount args. | |
1639 | * Note: the superblock _has_ now been read in. | |
1640 | */ | |
1641 | STATIC int | |
1642 | xfs_finish_flags( | |
1643 | struct xfs_mount_args *ap, | |
1644 | struct xfs_mount *mp) | |
1645 | { | |
1646 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1647 | ||
1648 | /* Fail a mount where the logbuf is smaller then the log stripe */ | |
1649 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { | |
1650 | if ((ap->logbufsize <= 0) && | |
1651 | (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) { | |
1652 | mp->m_logbsize = mp->m_sb.sb_logsunit; | |
1653 | } else if (ap->logbufsize > 0 && | |
1654 | ap->logbufsize < mp->m_sb.sb_logsunit) { | |
1655 | cmn_err(CE_WARN, | |
1656 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
1657 | return XFS_ERROR(EINVAL); | |
1658 | } | |
1659 | } else { | |
1660 | /* Fail a mount if the logbuf is larger than 32K */ | |
1661 | if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) { | |
1662 | cmn_err(CE_WARN, | |
1663 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
1664 | return XFS_ERROR(EINVAL); | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | /* | |
1669 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1670 | * told by noattr2 to turn it off | |
1671 | */ | |
1672 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
1673 | !(ap->flags & XFSMNT_NOATTR2)) | |
1674 | mp->m_flags |= XFS_MOUNT_ATTR2; | |
1675 | ||
1676 | /* | |
1677 | * prohibit r/w mounts of read-only filesystems | |
1678 | */ | |
1679 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
1680 | cmn_err(CE_WARN, | |
1681 | "XFS: cannot mount a read-only filesystem as read-write"); | |
1682 | return XFS_ERROR(EROFS); | |
1683 | } | |
1684 | ||
1685 | /* | |
1686 | * check for shared mount. | |
1687 | */ | |
1688 | if (ap->flags & XFSMNT_SHARED) { | |
1689 | if (!xfs_sb_version_hasshared(&mp->m_sb)) | |
1690 | return XFS_ERROR(EINVAL); | |
1691 | ||
1692 | /* | |
1693 | * For IRIX 6.5, shared mounts must have the shared | |
1694 | * version bit set, have the persistent readonly | |
1695 | * field set, must be version 0 and can only be mounted | |
1696 | * read-only. | |
1697 | */ | |
1698 | if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) || | |
1699 | (mp->m_sb.sb_shared_vn != 0)) | |
1700 | return XFS_ERROR(EINVAL); | |
1701 | ||
1702 | mp->m_flags |= XFS_MOUNT_SHARED; | |
1703 | ||
1704 | /* | |
1705 | * Shared XFS V0 can't deal with DMI. Return EINVAL. | |
1706 | */ | |
1707 | if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI)) | |
1708 | return XFS_ERROR(EINVAL); | |
1709 | } | |
1710 | ||
1711 | if (ap->flags & XFSMNT_UQUOTA) { | |
1712 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); | |
1713 | if (ap->flags & XFSMNT_UQUOTAENF) | |
1714 | mp->m_qflags |= XFS_UQUOTA_ENFD; | |
1715 | } | |
1716 | ||
1717 | if (ap->flags & XFSMNT_GQUOTA) { | |
1718 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); | |
1719 | if (ap->flags & XFSMNT_GQUOTAENF) | |
1720 | mp->m_qflags |= XFS_OQUOTA_ENFD; | |
1721 | } else if (ap->flags & XFSMNT_PQUOTA) { | |
1722 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); | |
1723 | if (ap->flags & XFSMNT_PQUOTAENF) | |
1724 | mp->m_qflags |= XFS_OQUOTA_ENFD; | |
1725 | } | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | ||
1da177e4 | 1730 | STATIC int |
a50cd269 | 1731 | xfs_fs_fill_super( |
1da177e4 LT |
1732 | struct super_block *sb, |
1733 | void *data, | |
1734 | int silent) | |
1735 | { | |
f3dcc13f | 1736 | struct inode *root; |
745f6919 | 1737 | struct xfs_mount *mp = NULL; |
bdd907ba | 1738 | struct xfs_mount_args *args; |
c962fb79 | 1739 | int flags = 0, error = ENOMEM; |
1da177e4 | 1740 | |
bdd907ba CH |
1741 | args = xfs_args_allocate(sb, silent); |
1742 | if (!args) | |
1743 | return -ENOMEM; | |
1744 | ||
c962fb79 CH |
1745 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1746 | if (!mp) | |
1747 | goto out_free_args; | |
1da177e4 | 1748 | |
c962fb79 CH |
1749 | spin_lock_init(&mp->m_sb_lock); |
1750 | mutex_init(&mp->m_ilock); | |
1751 | mutex_init(&mp->m_growlock); | |
1752 | atomic_set(&mp->m_active_trans, 0); | |
74394496 CH |
1753 | INIT_LIST_HEAD(&mp->m_sync_list); |
1754 | spin_lock_init(&mp->m_sync_lock); | |
1755 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1756 | ||
b267ce99 CH |
1757 | mp->m_super = sb; |
1758 | sb->s_fs_info = mp; | |
1da177e4 | 1759 | |
bd186aa9 CH |
1760 | if (sb->s_flags & MS_RDONLY) |
1761 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
1762 | ||
745f6919 CH |
1763 | error = xfs_parseargs(mp, (char *)data, args, 0); |
1764 | if (error) | |
c962fb79 | 1765 | goto out_free_mp; |
1da177e4 LT |
1766 | |
1767 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1768 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1769 | sb->s_export_op = &xfs_export_operations; |
a50cd269 NS |
1770 | sb->s_qcop = &xfs_quotactl_operations; |
1771 | sb->s_op = &xfs_super_operations; | |
1da177e4 | 1772 | |
f8f15e42 CH |
1773 | error = xfs_dmops_get(mp, args); |
1774 | if (error) | |
c962fb79 | 1775 | goto out_free_mp; |
f8f15e42 | 1776 | error = xfs_qmops_get(mp, args); |
745f6919 | 1777 | if (error) |
19f354d4 | 1778 | goto out_put_dmops; |
1da177e4 | 1779 | |
f8f15e42 CH |
1780 | if (args->flags & XFSMNT_QUIET) |
1781 | flags |= XFS_MFSI_QUIET; | |
1782 | ||
19f354d4 CH |
1783 | error = xfs_open_devices(mp, args); |
1784 | if (error) | |
1785 | goto out_put_qmops; | |
f8f15e42 | 1786 | |
c962fb79 CH |
1787 | if (xfs_icsb_init_counters(mp)) |
1788 | mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; | |
1789 | ||
f8f15e42 CH |
1790 | /* |
1791 | * Setup flags based on mount(2) options and then the superblock | |
1792 | */ | |
1793 | error = xfs_start_flags(args, mp); | |
1794 | if (error) | |
95db4e21 | 1795 | goto out_destroy_counters; |
f8f15e42 CH |
1796 | error = xfs_readsb(mp, flags); |
1797 | if (error) | |
95db4e21 | 1798 | goto out_destroy_counters; |
f8f15e42 CH |
1799 | error = xfs_finish_flags(args, mp); |
1800 | if (error) | |
effa2eda | 1801 | goto out_free_sb; |
f8f15e42 | 1802 | |
e34b562c | 1803 | error = xfs_setup_devices(mp); |
19f354d4 | 1804 | if (error) |
effa2eda | 1805 | goto out_free_sb; |
f8f15e42 CH |
1806 | |
1807 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1808 | xfs_mountfs_check_barriers(mp); | |
1809 | ||
1810 | error = xfs_filestream_mount(mp); | |
1811 | if (error) | |
effa2eda | 1812 | goto out_free_sb; |
f8f15e42 CH |
1813 | |
1814 | error = xfs_mountfs(mp, flags); | |
1815 | if (error) | |
120226c1 | 1816 | goto out_filestream_unmount; |
f8f15e42 CH |
1817 | |
1818 | XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, args->mtpt, args->fsname); | |
1819 | ||
1da177e4 | 1820 | sb->s_dirt = 1; |
4ca488eb CH |
1821 | sb->s_magic = XFS_SB_MAGIC; |
1822 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1823 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1824 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1825 | sb->s_time_gran = 1; | |
1826 | set_posix_acl_flag(sb); | |
1827 | ||
f3dcc13f CH |
1828 | root = igrab(mp->m_rootip->i_vnode); |
1829 | if (!root) { | |
cbc89dcf | 1830 | error = ENOENT; |
1da177e4 | 1831 | goto fail_unmount; |
cbc89dcf | 1832 | } |
f3dcc13f CH |
1833 | if (is_bad_inode(root)) { |
1834 | error = EINVAL; | |
1da177e4 LT |
1835 | goto fail_vnrele; |
1836 | } | |
f3dcc13f CH |
1837 | sb->s_root = d_alloc_root(root); |
1838 | if (!sb->s_root) { | |
1839 | error = ENOMEM; | |
1da177e4 LT |
1840 | goto fail_vnrele; |
1841 | } | |
74394496 CH |
1842 | |
1843 | mp->m_sync_work.w_syncer = xfs_sync_worker; | |
1844 | mp->m_sync_work.w_mount = mp; | |
1845 | mp->m_sync_task = kthread_run(xfssyncd, mp, "xfssyncd"); | |
1846 | if (IS_ERR(mp->m_sync_task)) { | |
1847 | error = -PTR_ERR(mp->m_sync_task); | |
1da177e4 | 1848 | goto fail_vnrele; |
74394496 CH |
1849 | } |
1850 | ||
cf441eeb | 1851 | xfs_itrace_exit(XFS_I(sb->s_root->d_inode)); |
1da177e4 | 1852 | |
bdd907ba | 1853 | kfree(args); |
1da177e4 LT |
1854 | return 0; |
1855 | ||
120226c1 CH |
1856 | out_filestream_unmount: |
1857 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1858 | out_free_sb: |
1859 | xfs_freesb(mp); | |
c962fb79 CH |
1860 | out_destroy_counters: |
1861 | xfs_icsb_destroy_counters(mp); | |
19f354d4 CH |
1862 | xfs_close_devices(mp); |
1863 | out_put_qmops: | |
f8f15e42 | 1864 | xfs_qmops_put(mp); |
19f354d4 | 1865 | out_put_dmops: |
f8f15e42 | 1866 | xfs_dmops_put(mp); |
c962fb79 CH |
1867 | out_free_mp: |
1868 | kfree(mp); | |
1869 | out_free_args: | |
1870 | kfree(args); | |
1871 | return -error; | |
f8f15e42 CH |
1872 | |
1873 | fail_vnrele: | |
1da177e4 LT |
1874 | if (sb->s_root) { |
1875 | dput(sb->s_root); | |
1876 | sb->s_root = NULL; | |
1877 | } else { | |
f3dcc13f | 1878 | iput(root); |
1da177e4 LT |
1879 | } |
1880 | ||
f8f15e42 | 1881 | fail_unmount: |
e48ad316 CH |
1882 | /* |
1883 | * Blow away any referenced inode in the filestreams cache. | |
1884 | * This can and will cause log traffic as inodes go inactive | |
1885 | * here. | |
1886 | */ | |
1887 | xfs_filestream_unmount(mp); | |
1888 | ||
1889 | XFS_bflush(mp->m_ddev_targp); | |
1890 | error = xfs_unmount_flush(mp, 0); | |
1891 | WARN_ON(error); | |
1892 | ||
1893 | IRELE(mp->m_rootip); | |
1894 | ||
19f354d4 | 1895 | xfs_unmountfs(mp); |
c962fb79 | 1896 | goto out_destroy_counters; |
1da177e4 LT |
1897 | } |
1898 | ||
454e2398 | 1899 | STATIC int |
a50cd269 | 1900 | xfs_fs_get_sb( |
1da177e4 LT |
1901 | struct file_system_type *fs_type, |
1902 | int flags, | |
1903 | const char *dev_name, | |
454e2398 DH |
1904 | void *data, |
1905 | struct vfsmount *mnt) | |
1da177e4 | 1906 | { |
454e2398 DH |
1907 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
1908 | mnt); | |
a50cd269 NS |
1909 | } |
1910 | ||
7989cb8e | 1911 | static struct super_operations xfs_super_operations = { |
a50cd269 NS |
1912 | .alloc_inode = xfs_fs_alloc_inode, |
1913 | .destroy_inode = xfs_fs_destroy_inode, | |
1914 | .write_inode = xfs_fs_write_inode, | |
1915 | .clear_inode = xfs_fs_clear_inode, | |
1916 | .put_super = xfs_fs_put_super, | |
1917 | .write_super = xfs_fs_write_super, | |
1918 | .sync_fs = xfs_fs_sync_super, | |
1919 | .write_super_lockfs = xfs_fs_lockfs, | |
1920 | .statfs = xfs_fs_statfs, | |
1921 | .remount_fs = xfs_fs_remount, | |
1922 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1923 | }; |
1924 | ||
7989cb8e | 1925 | static struct quotactl_ops xfs_quotactl_operations = { |
a50cd269 NS |
1926 | .quota_sync = xfs_fs_quotasync, |
1927 | .get_xstate = xfs_fs_getxstate, | |
1928 | .set_xstate = xfs_fs_setxstate, | |
1929 | .get_xquota = xfs_fs_getxquota, | |
1930 | .set_xquota = xfs_fs_setxquota, | |
1da177e4 LT |
1931 | }; |
1932 | ||
5085b607 | 1933 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1934 | .owner = THIS_MODULE, |
1935 | .name = "xfs", | |
a50cd269 | 1936 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
1937 | .kill_sb = kill_block_super, |
1938 | .fs_flags = FS_REQUIRES_DEV, | |
1939 | }; | |
1940 | ||
9f8868ff CH |
1941 | STATIC int __init |
1942 | xfs_alloc_trace_bufs(void) | |
1943 | { | |
1944 | #ifdef XFS_ALLOC_TRACE | |
1945 | xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_MAYFAIL); | |
1946 | if (!xfs_alloc_trace_buf) | |
1947 | goto out; | |
1948 | #endif | |
1949 | #ifdef XFS_BMAP_TRACE | |
1950 | xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_MAYFAIL); | |
1951 | if (!xfs_bmap_trace_buf) | |
1952 | goto out_free_alloc_trace; | |
1953 | #endif | |
1954 | #ifdef XFS_BMBT_TRACE | |
1955 | xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_MAYFAIL); | |
1956 | if (!xfs_bmbt_trace_buf) | |
1957 | goto out_free_bmap_trace; | |
1958 | #endif | |
1959 | #ifdef XFS_ATTR_TRACE | |
1960 | xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_MAYFAIL); | |
1961 | if (!xfs_attr_trace_buf) | |
1962 | goto out_free_bmbt_trace; | |
1963 | #endif | |
1964 | #ifdef XFS_DIR2_TRACE | |
1965 | xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_MAYFAIL); | |
1966 | if (!xfs_dir2_trace_buf) | |
1967 | goto out_free_attr_trace; | |
1968 | #endif | |
1969 | ||
1970 | return 0; | |
1971 | ||
1972 | #ifdef XFS_DIR2_TRACE | |
1973 | out_free_attr_trace: | |
1974 | #endif | |
1975 | #ifdef XFS_ATTR_TRACE | |
1976 | ktrace_free(xfs_attr_trace_buf); | |
1977 | out_free_bmbt_trace: | |
1978 | #endif | |
1979 | #ifdef XFS_BMBT_TRACE | |
1980 | ktrace_free(xfs_bmbt_trace_buf); | |
1981 | out_free_bmap_trace: | |
1982 | #endif | |
1983 | #ifdef XFS_BMAP_TRACE | |
1984 | ktrace_free(xfs_bmap_trace_buf); | |
1985 | out_free_alloc_trace: | |
1986 | #endif | |
1987 | #ifdef XFS_ALLOC_TRACE | |
1988 | ktrace_free(xfs_alloc_trace_buf); | |
1989 | out: | |
1990 | #endif | |
1991 | return -ENOMEM; | |
1992 | } | |
1993 | ||
1994 | STATIC void | |
1995 | xfs_free_trace_bufs(void) | |
1996 | { | |
1997 | #ifdef XFS_DIR2_TRACE | |
1998 | ktrace_free(xfs_dir2_trace_buf); | |
1999 | #endif | |
2000 | #ifdef XFS_ATTR_TRACE | |
2001 | ktrace_free(xfs_attr_trace_buf); | |
2002 | #endif | |
2003 | #ifdef XFS_BMBT_TRACE | |
2004 | ktrace_free(xfs_bmbt_trace_buf); | |
2005 | #endif | |
2006 | #ifdef XFS_BMAP_TRACE | |
2007 | ktrace_free(xfs_bmap_trace_buf); | |
2008 | #endif | |
2009 | #ifdef XFS_ALLOC_TRACE | |
2010 | ktrace_free(xfs_alloc_trace_buf); | |
2011 | #endif | |
2012 | } | |
2013 | ||
2014 | STATIC int __init | |
2015 | xfs_init_zones(void) | |
2016 | { | |
2017 | xfs_vnode_zone = kmem_zone_init_flags(sizeof(bhv_vnode_t), "xfs_vnode", | |
2018 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | | |
2019 | KM_ZONE_SPREAD, | |
2020 | xfs_fs_inode_init_once); | |
2021 | if (!xfs_vnode_zone) | |
2022 | goto out; | |
2023 | ||
2024 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
2025 | if (!xfs_ioend_zone) | |
2026 | goto out_destroy_vnode_zone; | |
2027 | ||
2028 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
2029 | xfs_ioend_zone); | |
2030 | if (!xfs_ioend_pool) | |
2031 | goto out_destroy_ioend_zone; | |
2032 | ||
2033 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
2034 | "xfs_log_ticket"); | |
2035 | if (!xfs_log_ticket_zone) | |
2036 | goto out_destroy_ioend_pool; | |
2037 | ||
2038 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
2039 | "xfs_bmap_free_item"); | |
2040 | if (!xfs_bmap_free_item_zone) | |
2041 | goto out_destroy_log_ticket_zone; | |
2042 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), | |
2043 | "xfs_btree_cur"); | |
2044 | if (!xfs_btree_cur_zone) | |
2045 | goto out_destroy_bmap_free_item_zone; | |
2046 | ||
2047 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
2048 | "xfs_da_state"); | |
2049 | if (!xfs_da_state_zone) | |
2050 | goto out_destroy_btree_cur_zone; | |
2051 | ||
2052 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
2053 | if (!xfs_dabuf_zone) | |
2054 | goto out_destroy_da_state_zone; | |
2055 | ||
2056 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
2057 | if (!xfs_ifork_zone) | |
2058 | goto out_destroy_dabuf_zone; | |
2059 | ||
2060 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
2061 | if (!xfs_trans_zone) | |
2062 | goto out_destroy_ifork_zone; | |
2063 | ||
2064 | /* | |
2065 | * The size of the zone allocated buf log item is the maximum | |
2066 | * size possible under XFS. This wastes a little bit of memory, | |
2067 | * but it is much faster. | |
2068 | */ | |
2069 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
2070 | (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) / | |
2071 | NBWORD) * sizeof(int))), "xfs_buf_item"); | |
2072 | if (!xfs_buf_item_zone) | |
2073 | goto out_destroy_trans_zone; | |
2074 | ||
2075 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
2076 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
2077 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
2078 | if (!xfs_efd_zone) | |
2079 | goto out_destroy_buf_item_zone; | |
2080 | ||
2081 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
2082 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
2083 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
2084 | if (!xfs_efi_zone) | |
2085 | goto out_destroy_efd_zone; | |
2086 | ||
2087 | xfs_inode_zone = | |
2088 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
2089 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | | |
2090 | KM_ZONE_SPREAD, NULL); | |
2091 | if (!xfs_inode_zone) | |
2092 | goto out_destroy_efi_zone; | |
2093 | ||
2094 | xfs_ili_zone = | |
2095 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
2096 | KM_ZONE_SPREAD, NULL); | |
2097 | if (!xfs_ili_zone) | |
2098 | goto out_destroy_inode_zone; | |
2099 | ||
2100 | #ifdef CONFIG_XFS_POSIX_ACL | |
2101 | xfs_acl_zone = kmem_zone_init(sizeof(xfs_acl_t), "xfs_acl"); | |
2102 | if (!xfs_acl_zone) | |
2103 | goto out_destroy_ili_zone; | |
2104 | #endif | |
2105 | ||
2106 | return 0; | |
2107 | ||
2108 | #ifdef CONFIG_XFS_POSIX_ACL | |
2109 | out_destroy_ili_zone: | |
2110 | #endif | |
2111 | kmem_zone_destroy(xfs_ili_zone); | |
2112 | out_destroy_inode_zone: | |
2113 | kmem_zone_destroy(xfs_inode_zone); | |
2114 | out_destroy_efi_zone: | |
2115 | kmem_zone_destroy(xfs_efi_zone); | |
2116 | out_destroy_efd_zone: | |
2117 | kmem_zone_destroy(xfs_efd_zone); | |
2118 | out_destroy_buf_item_zone: | |
2119 | kmem_zone_destroy(xfs_buf_item_zone); | |
2120 | out_destroy_trans_zone: | |
2121 | kmem_zone_destroy(xfs_trans_zone); | |
2122 | out_destroy_ifork_zone: | |
2123 | kmem_zone_destroy(xfs_ifork_zone); | |
2124 | out_destroy_dabuf_zone: | |
2125 | kmem_zone_destroy(xfs_dabuf_zone); | |
2126 | out_destroy_da_state_zone: | |
2127 | kmem_zone_destroy(xfs_da_state_zone); | |
2128 | out_destroy_btree_cur_zone: | |
2129 | kmem_zone_destroy(xfs_btree_cur_zone); | |
2130 | out_destroy_bmap_free_item_zone: | |
2131 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
2132 | out_destroy_log_ticket_zone: | |
2133 | kmem_zone_destroy(xfs_log_ticket_zone); | |
2134 | out_destroy_ioend_pool: | |
2135 | mempool_destroy(xfs_ioend_pool); | |
2136 | out_destroy_ioend_zone: | |
2137 | kmem_zone_destroy(xfs_ioend_zone); | |
2138 | out_destroy_vnode_zone: | |
2139 | kmem_zone_destroy(xfs_vnode_zone); | |
2140 | out: | |
2141 | return -ENOMEM; | |
2142 | } | |
2143 | ||
2144 | STATIC void | |
2145 | xfs_destroy_zones(void) | |
2146 | { | |
2147 | #ifdef CONFIG_XFS_POSIX_ACL | |
2148 | kmem_zone_destroy(xfs_acl_zone); | |
2149 | #endif | |
2150 | kmem_zone_destroy(xfs_ili_zone); | |
2151 | kmem_zone_destroy(xfs_inode_zone); | |
2152 | kmem_zone_destroy(xfs_efi_zone); | |
2153 | kmem_zone_destroy(xfs_efd_zone); | |
2154 | kmem_zone_destroy(xfs_buf_item_zone); | |
2155 | kmem_zone_destroy(xfs_trans_zone); | |
2156 | kmem_zone_destroy(xfs_ifork_zone); | |
2157 | kmem_zone_destroy(xfs_dabuf_zone); | |
2158 | kmem_zone_destroy(xfs_da_state_zone); | |
2159 | kmem_zone_destroy(xfs_btree_cur_zone); | |
2160 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
2161 | kmem_zone_destroy(xfs_log_ticket_zone); | |
2162 | mempool_destroy(xfs_ioend_pool); | |
2163 | kmem_zone_destroy(xfs_ioend_zone); | |
2164 | kmem_zone_destroy(xfs_vnode_zone); | |
2165 | ||
2166 | } | |
1da177e4 LT |
2167 | |
2168 | STATIC int __init | |
9f8868ff | 2169 | init_xfs_fs(void) |
1da177e4 LT |
2170 | { |
2171 | int error; | |
1da177e4 LT |
2172 | static char message[] __initdata = KERN_INFO \ |
2173 | XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n"; | |
2174 | ||
2175 | printk(message); | |
2176 | ||
1da177e4 | 2177 | ktrace_init(64); |
9f8868ff CH |
2178 | vn_init(); |
2179 | xfs_dir_startup(); | |
1da177e4 | 2180 | |
8758280f | 2181 | error = xfs_init_zones(); |
9f8868ff CH |
2182 | if (error) |
2183 | goto out; | |
2184 | ||
2185 | error = xfs_alloc_trace_bufs(); | |
2186 | if (error) | |
2187 | goto out_destroy_zones; | |
2188 | ||
2189 | error = xfs_mru_cache_init(); | |
2190 | if (error) | |
2191 | goto out_free_trace_buffers; | |
2192 | ||
2193 | error = xfs_filestream_init(); | |
2194 | if (error) | |
2195 | goto out_mru_cache_uninit; | |
1da177e4 | 2196 | |
ce8e922c | 2197 | error = xfs_buf_init(); |
9f8868ff CH |
2198 | if (error) |
2199 | goto out_filestream_uninit; | |
2200 | ||
2201 | error = xfs_init_procfs(); | |
2202 | if (error) | |
2203 | goto out_buf_terminate; | |
2204 | ||
2205 | error = xfs_sysctl_register(); | |
2206 | if (error) | |
2207 | goto out_cleanup_procfs; | |
1da177e4 | 2208 | |
1da177e4 LT |
2209 | vfs_initquota(); |
2210 | ||
2211 | error = register_filesystem(&xfs_fs_type); | |
2212 | if (error) | |
9f8868ff | 2213 | goto out_sysctl_unregister; |
1da177e4 LT |
2214 | return 0; |
2215 | ||
9f8868ff CH |
2216 | out_sysctl_unregister: |
2217 | xfs_sysctl_unregister(); | |
2218 | out_cleanup_procfs: | |
2219 | xfs_cleanup_procfs(); | |
2220 | out_buf_terminate: | |
ce8e922c | 2221 | xfs_buf_terminate(); |
9f8868ff CH |
2222 | out_filestream_uninit: |
2223 | xfs_filestream_uninit(); | |
2224 | out_mru_cache_uninit: | |
2225 | xfs_mru_cache_uninit(); | |
2226 | out_free_trace_buffers: | |
2227 | xfs_free_trace_bufs(); | |
2228 | out_destroy_zones: | |
8758280f | 2229 | xfs_destroy_zones(); |
9f8868ff | 2230 | out: |
1da177e4 LT |
2231 | return error; |
2232 | } | |
2233 | ||
2234 | STATIC void __exit | |
9f8868ff | 2235 | exit_xfs_fs(void) |
1da177e4 LT |
2236 | { |
2237 | vfs_exitquota(); | |
1da177e4 | 2238 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
2239 | xfs_sysctl_unregister(); |
2240 | xfs_cleanup_procfs(); | |
ce8e922c | 2241 | xfs_buf_terminate(); |
9f8868ff CH |
2242 | xfs_filestream_uninit(); |
2243 | xfs_mru_cache_uninit(); | |
2244 | xfs_free_trace_bufs(); | |
8758280f | 2245 | xfs_destroy_zones(); |
1da177e4 LT |
2246 | ktrace_uninit(); |
2247 | } | |
2248 | ||
2249 | module_init(init_xfs_fs); | |
2250 | module_exit(exit_xfs_fs); | |
2251 | ||
2252 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
2253 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
2254 | MODULE_LICENSE("GPL"); |