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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 | */ |
0b1b213f | 18 | |
1da177e4 | 19 | #include "xfs.h" |
6ca1c906 | 20 | #include "xfs_format.h" |
1da177e4 | 21 | #include "xfs_log.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 | 26 | #include "xfs_alloc.h" |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 | 29 | #include "xfs_bmap_btree.h" |
a844f451 | 30 | #include "xfs_alloc_btree.h" |
1da177e4 | 31 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
32 | #include "xfs_dinode.h" |
33 | #include "xfs_inode.h" | |
a844f451 NS |
34 | #include "xfs_btree.h" |
35 | #include "xfs_ialloc.h" | |
1da177e4 | 36 | #include "xfs_bmap.h" |
1da177e4 LT |
37 | #include "xfs_rtalloc.h" |
38 | #include "xfs_error.h" | |
39 | #include "xfs_itable.h" | |
9909c4aa | 40 | #include "xfs_fsops.h" |
1da177e4 LT |
41 | #include "xfs_attr.h" |
42 | #include "xfs_buf_item.h" | |
a67d7c5f | 43 | #include "xfs_log_priv.h" |
249a8c11 | 44 | #include "xfs_trans_priv.h" |
48b62a1a | 45 | #include "xfs_filestream.h" |
9f8868ff | 46 | #include "xfs_da_btree.h" |
2b9ab5ab DC |
47 | #include "xfs_dir2_format.h" |
48 | #include "xfs_dir2.h" | |
9f8868ff CH |
49 | #include "xfs_extfree_item.h" |
50 | #include "xfs_mru_cache.h" | |
51 | #include "xfs_inode_item.h" | |
6d8b79cf | 52 | #include "xfs_icache.h" |
0b1b213f | 53 | #include "xfs_trace.h" |
3ebe7d2d | 54 | #include "xfs_icreate_item.h" |
1da177e4 LT |
55 | |
56 | #include <linux/namei.h> | |
57 | #include <linux/init.h> | |
5a0e3ad6 | 58 | #include <linux/slab.h> |
1da177e4 | 59 | #include <linux/mount.h> |
0829c360 | 60 | #include <linux/mempool.h> |
1da177e4 | 61 | #include <linux/writeback.h> |
4df08c52 | 62 | #include <linux/kthread.h> |
7dfb7103 | 63 | #include <linux/freezer.h> |
62a877e3 | 64 | #include <linux/parser.h> |
1da177e4 | 65 | |
b87221de | 66 | static const struct super_operations xfs_super_operations; |
7989cb8e | 67 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 68 | mempool_t *xfs_ioend_pool; |
1da177e4 | 69 | |
a67d7c5f DC |
70 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
71 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
72 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
73 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
74 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
75 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
76 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
77 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
78 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
79 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
80 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
81 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
82 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
83 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
84 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
85 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
86 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
87 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
88 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
89 | * unwritten extent conversion */ | |
90 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f | 91 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
08bf5404 CM |
92 | #define MNTOPT_32BITINODE "inode32" /* inode allocation limited to |
93 | * XFS_MAXINUMBER_32 */ | |
a67d7c5f DC |
94 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
95 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
96 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
97 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
98 | * in stat(). */ | |
99 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
100 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
101 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
102 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
103 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
104 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
105 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
106 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
107 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
108 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
109 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
110 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
111 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
112 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
113 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
114 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ |
115 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ | |
116 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ | |
117 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 118 | |
62a877e3 CH |
119 | /* |
120 | * Table driven mount option parser. | |
121 | * | |
122 | * Currently only used for remount, but it will be used for mount | |
123 | * in the future, too. | |
124 | */ | |
125 | enum { | |
2ea03929 CM |
126 | Opt_barrier, |
127 | Opt_nobarrier, | |
128 | Opt_inode64, | |
129 | Opt_inode32, | |
130 | Opt_err | |
62a877e3 CH |
131 | }; |
132 | ||
a447c093 | 133 | static const match_table_t tokens = { |
62a877e3 CH |
134 | {Opt_barrier, "barrier"}, |
135 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 136 | {Opt_inode64, "inode64"}, |
2ea03929 | 137 | {Opt_inode32, "inode32"}, |
62a877e3 CH |
138 | {Opt_err, NULL} |
139 | }; | |
140 | ||
141 | ||
a67d7c5f | 142 | STATIC unsigned long |
a17164e5 | 143 | suffix_kstrtoint(char *s, unsigned int base, int *res) |
a67d7c5f | 144 | { |
a17164e5 | 145 | int last, shift_left_factor = 0, _res; |
a67d7c5f DC |
146 | char *value = s; |
147 | ||
148 | last = strlen(value) - 1; | |
149 | if (value[last] == 'K' || value[last] == 'k') { | |
150 | shift_left_factor = 10; | |
151 | value[last] = '\0'; | |
152 | } | |
153 | if (value[last] == 'M' || value[last] == 'm') { | |
154 | shift_left_factor = 20; | |
155 | value[last] = '\0'; | |
156 | } | |
157 | if (value[last] == 'G' || value[last] == 'g') { | |
158 | shift_left_factor = 30; | |
159 | value[last] = '\0'; | |
160 | } | |
161 | ||
a17164e5 AP |
162 | if (kstrtoint(s, base, &_res)) |
163 | return -EINVAL; | |
164 | *res = _res << shift_left_factor; | |
165 | return 0; | |
a67d7c5f DC |
166 | } |
167 | ||
9d565ffa CH |
168 | /* |
169 | * This function fills in xfs_mount_t fields based on mount args. | |
170 | * Note: the superblock has _not_ yet been read in. | |
171 | * | |
172 | * Note that this function leaks the various device name allocations on | |
173 | * failure. The caller takes care of them. | |
174 | */ | |
a67d7c5f DC |
175 | STATIC int |
176 | xfs_parseargs( | |
177 | struct xfs_mount *mp, | |
288699fe | 178 | char *options) |
a67d7c5f | 179 | { |
9d565ffa | 180 | struct super_block *sb = mp->m_super; |
a17164e5 | 181 | char *this_char, *value; |
9d565ffa CH |
182 | int dsunit = 0; |
183 | int dswidth = 0; | |
184 | int iosize = 0; | |
a5687787 | 185 | __uint8_t iosizelog = 0; |
9d565ffa | 186 | |
4f10700a DC |
187 | /* |
188 | * set up the mount name first so all the errors will refer to the | |
189 | * correct device. | |
190 | */ | |
191 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
192 | if (!mp->m_fsname) | |
193 | return ENOMEM; | |
194 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
195 | ||
9d565ffa CH |
196 | /* |
197 | * Copy binary VFS mount flags we are interested in. | |
198 | */ | |
199 | if (sb->s_flags & MS_RDONLY) | |
200 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
201 | if (sb->s_flags & MS_DIRSYNC) | |
202 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
203 | if (sb->s_flags & MS_SYNCHRONOUS) | |
204 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
205 | ||
206 | /* | |
207 | * Set some default flags that could be cleared by the mount option | |
208 | * parsing. | |
209 | */ | |
210 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
211 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
08bf5404 | 212 | #if !XFS_BIG_INUMS |
9d565ffa | 213 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
08bf5404 | 214 | #endif |
a67d7c5f | 215 | |
9d565ffa CH |
216 | /* |
217 | * These can be overridden by the mount option parsing. | |
218 | */ | |
219 | mp->m_logbufs = -1; | |
220 | mp->m_logbsize = -1; | |
a67d7c5f DC |
221 | |
222 | if (!options) | |
223 | goto done; | |
224 | ||
a67d7c5f DC |
225 | while ((this_char = strsep(&options, ",")) != NULL) { |
226 | if (!*this_char) | |
227 | continue; | |
228 | if ((value = strchr(this_char, '=')) != NULL) | |
229 | *value++ = 0; | |
230 | ||
231 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
232 | if (!value || !*value) { | |
4f10700a | 233 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
234 | this_char); |
235 | return EINVAL; | |
236 | } | |
a17164e5 AP |
237 | if (kstrtoint(value, 10, &mp->m_logbufs)) |
238 | return EINVAL; | |
a67d7c5f DC |
239 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
240 | if (!value || !*value) { | |
4f10700a | 241 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
242 | this_char); |
243 | return EINVAL; | |
244 | } | |
a17164e5 AP |
245 | if (suffix_kstrtoint(value, 10, &mp->m_logbsize)) |
246 | return EINVAL; | |
a67d7c5f DC |
247 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
248 | if (!value || !*value) { | |
4f10700a | 249 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
250 | this_char); |
251 | return EINVAL; | |
252 | } | |
9d565ffa CH |
253 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
254 | if (!mp->m_logname) | |
255 | return ENOMEM; | |
a67d7c5f | 256 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 257 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe CH |
258 | this_char); |
259 | return EINVAL; | |
a67d7c5f DC |
260 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
261 | if (!value || !*value) { | |
4f10700a | 262 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
263 | this_char); |
264 | return EINVAL; | |
265 | } | |
9d565ffa CH |
266 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
267 | if (!mp->m_rtname) | |
268 | return ENOMEM; | |
a67d7c5f DC |
269 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
270 | if (!value || !*value) { | |
4f10700a | 271 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
272 | this_char); |
273 | return EINVAL; | |
274 | } | |
a17164e5 AP |
275 | if (kstrtoint(value, 10, &iosize)) |
276 | return EINVAL; | |
1ec7944b | 277 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
278 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
279 | if (!value || !*value) { | |
4f10700a | 280 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
281 | this_char); |
282 | return EINVAL; | |
283 | } | |
a17164e5 AP |
284 | if (suffix_kstrtoint(value, 10, &iosize)) |
285 | return EINVAL; | |
9d565ffa | 286 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
287 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
288 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
289 | mp->m_flags |= XFS_MOUNT_GRPID; | |
290 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
291 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
292 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
293 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 294 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 295 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 296 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 297 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 298 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 299 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 300 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
301 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
302 | if (!value || !*value) { | |
4f10700a | 303 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
304 | this_char); |
305 | return EINVAL; | |
306 | } | |
a17164e5 AP |
307 | if (kstrtoint(value, 10, &dsunit)) |
308 | return EINVAL; | |
a67d7c5f DC |
309 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
310 | if (!value || !*value) { | |
4f10700a | 311 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
312 | this_char); |
313 | return EINVAL; | |
314 | } | |
a17164e5 AP |
315 | if (kstrtoint(value, 10, &dswidth)) |
316 | return EINVAL; | |
08bf5404 CM |
317 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
318 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 319 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 320 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 321 | #if !XFS_BIG_INUMS |
4f10700a | 322 | xfs_warn(mp, "%s option not allowed on this system", |
a67d7c5f DC |
323 | this_char); |
324 | return EINVAL; | |
325 | #endif | |
326 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 327 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 328 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 329 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 331 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 332 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 333 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 334 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 335 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 336 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 337 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 338 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 339 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 340 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 341 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 342 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
343 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
344 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 345 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 346 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 347 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
348 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
349 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
350 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
351 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
352 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
353 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
354 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
355 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
356 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
357 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
358 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
359 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
360 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
361 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa | 362 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 363 | XFS_PQUOTA_ENFD); |
a67d7c5f | 364 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa | 365 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 366 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
a67d7c5f DC |
367 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
368 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa | 369 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 370 | XFS_GQUOTA_ENFD); |
a67d7c5f | 371 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa | 372 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 373 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
71e330b5 | 374 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
375 | xfs_warn(mp, |
376 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 377 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 378 | xfs_warn(mp, |
93b8a585 | 379 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
380 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
381 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
382 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
383 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 384 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
385 | xfs_warn(mp, |
386 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 387 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
388 | xfs_warn(mp, |
389 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 390 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
391 | xfs_warn(mp, |
392 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 393 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
394 | xfs_warn(mp, |
395 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 396 | } else { |
4f10700a | 397 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
a67d7c5f DC |
398 | return EINVAL; |
399 | } | |
400 | } | |
401 | ||
9d565ffa CH |
402 | /* |
403 | * no recovery flag requires a read-only mount | |
404 | */ | |
405 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
406 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 407 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
9d565ffa | 408 | return EINVAL; |
a67d7c5f DC |
409 | } |
410 | ||
9d565ffa | 411 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
412 | xfs_warn(mp, |
413 | "sunit and swidth options incompatible with the noalign option"); | |
a67d7c5f DC |
414 | return EINVAL; |
415 | } | |
416 | ||
7d095257 CH |
417 | #ifndef CONFIG_XFS_QUOTA |
418 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 419 | xfs_warn(mp, "quota support not available in this kernel."); |
7d095257 CH |
420 | return EINVAL; |
421 | } | |
422 | #endif | |
423 | ||
a67d7c5f | 424 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 425 | xfs_warn(mp, "sunit and swidth must be specified together"); |
a67d7c5f DC |
426 | return EINVAL; |
427 | } | |
428 | ||
429 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
430 | xfs_warn(mp, |
431 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f DC |
432 | dswidth, dsunit); |
433 | return EINVAL; | |
434 | } | |
435 | ||
9d565ffa | 436 | done: |
39a45d84 | 437 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
438 | /* |
439 | * At this point the superblock has not been read | |
440 | * in, therefore we do not know the block size. | |
441 | * Before the mount call ends we will convert | |
442 | * these to FSBs. | |
443 | */ | |
39a45d84 JL |
444 | mp->m_dalign = dsunit; |
445 | mp->m_swidth = dswidth; | |
9d565ffa CH |
446 | } |
447 | ||
448 | if (mp->m_logbufs != -1 && | |
449 | mp->m_logbufs != 0 && | |
450 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
451 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 452 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa CH |
453 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
454 | return XFS_ERROR(EINVAL); | |
455 | } | |
456 | if (mp->m_logbsize != -1 && | |
457 | mp->m_logbsize != 0 && | |
458 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
459 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
460 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
461 | xfs_warn(mp, |
462 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa CH |
463 | mp->m_logbsize); |
464 | return XFS_ERROR(EINVAL); | |
465 | } | |
466 | ||
9d565ffa CH |
467 | if (iosizelog) { |
468 | if (iosizelog > XFS_MAX_IO_LOG || | |
469 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 470 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
471 | iosizelog, XFS_MIN_IO_LOG, |
472 | XFS_MAX_IO_LOG); | |
473 | return XFS_ERROR(EINVAL); | |
474 | } | |
475 | ||
476 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
477 | mp->m_readio_log = iosizelog; | |
478 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
479 | } |
480 | ||
a67d7c5f DC |
481 | return 0; |
482 | } | |
483 | ||
484 | struct proc_xfs_info { | |
485 | int flag; | |
486 | char *str; | |
487 | }; | |
488 | ||
489 | STATIC int | |
490 | xfs_showargs( | |
491 | struct xfs_mount *mp, | |
492 | struct seq_file *m) | |
493 | { | |
494 | static struct proc_xfs_info xfs_info_set[] = { | |
495 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 496 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 497 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
498 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
499 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
500 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
501 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
502 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
503 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 504 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 505 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 506 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
a67d7c5f DC |
507 | { 0, NULL } |
508 | }; | |
509 | static struct proc_xfs_info xfs_info_unset[] = { | |
510 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
511 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
512 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
513 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
514 | { 0, NULL } | |
515 | }; | |
516 | struct proc_xfs_info *xfs_infop; | |
517 | ||
518 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
519 | if (mp->m_flags & xfs_infop->flag) | |
520 | seq_puts(m, xfs_infop->str); | |
521 | } | |
522 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
523 | if (!(mp->m_flags & xfs_infop->flag)) | |
524 | seq_puts(m, xfs_infop->str); | |
525 | } | |
526 | ||
527 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
528 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
529 | (int)(1 << mp->m_writeio_log) >> 10); | |
530 | ||
531 | if (mp->m_logbufs > 0) | |
532 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
533 | if (mp->m_logbsize > 0) | |
534 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
535 | ||
536 | if (mp->m_logname) | |
537 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
538 | if (mp->m_rtname) | |
539 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
540 | ||
541 | if (mp->m_dalign > 0) | |
542 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
543 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
544 | if (mp->m_swidth > 0) | |
545 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
546 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
547 | ||
548 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
549 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
550 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
551 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
552 | ||
988abe40 | 553 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 554 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
988abe40 AE |
555 | seq_puts(m, "," MNTOPT_PRJQUOTA); |
556 | else | |
557 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
d892d586 CS |
558 | } |
559 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 560 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
988abe40 AE |
561 | seq_puts(m, "," MNTOPT_GRPQUOTA); |
562 | else | |
563 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
564 | } | |
a67d7c5f DC |
565 | |
566 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
567 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
568 | ||
569 | return 0; | |
570 | } | |
1da177e4 LT |
571 | __uint64_t |
572 | xfs_max_file_offset( | |
573 | unsigned int blockshift) | |
574 | { | |
575 | unsigned int pagefactor = 1; | |
576 | unsigned int bitshift = BITS_PER_LONG - 1; | |
577 | ||
578 | /* Figure out maximum filesize, on Linux this can depend on | |
579 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 580 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
581 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
582 | * So, for page sized blocks (4K on 32 bit platforms), | |
583 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
584 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
585 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
586 | * Note1: get_block_t takes a long (implicit cast from above) | |
587 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
588 | * can optionally convert the [unsigned] long from above into | |
589 | * an [unsigned] long long. | |
590 | */ | |
591 | ||
592 | #if BITS_PER_LONG == 32 | |
90c699a9 | 593 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
594 | ASSERT(sizeof(sector_t) == 8); |
595 | pagefactor = PAGE_CACHE_SIZE; | |
596 | bitshift = BITS_PER_LONG; | |
597 | # else | |
598 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
599 | # endif | |
600 | #endif | |
601 | ||
602 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
603 | } | |
604 | ||
2d2194f6 CM |
605 | xfs_agnumber_t |
606 | xfs_set_inode32(struct xfs_mount *mp) | |
607 | { | |
608 | xfs_agnumber_t index = 0; | |
4056c1d0 | 609 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
610 | xfs_sb_t *sbp = &mp->m_sb; |
611 | xfs_agnumber_t max_metadata; | |
612 | xfs_agino_t agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks -1, 0); | |
613 | xfs_ino_t ino = XFS_AGINO_TO_INO(mp, sbp->sb_agcount -1, agino); | |
614 | xfs_perag_t *pag; | |
615 | ||
616 | /* Calculate how much should be reserved for inodes to meet | |
617 | * the max inode percentage. | |
618 | */ | |
619 | if (mp->m_maxicount) { | |
620 | __uint64_t icount; | |
621 | ||
622 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
623 | do_div(icount, 100); | |
624 | icount += sbp->sb_agblocks - 1; | |
625 | do_div(icount, sbp->sb_agblocks); | |
626 | max_metadata = icount; | |
627 | } else { | |
628 | max_metadata = sbp->sb_agcount; | |
629 | } | |
630 | ||
631 | for (index = 0; index < sbp->sb_agcount; index++) { | |
632 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
4056c1d0 | 633 | |
2d2194f6 | 634 | if (ino > XFS_MAXINUMBER_32) { |
4056c1d0 CM |
635 | pag = xfs_perag_get(mp, index); |
636 | pag->pagi_inodeok = 0; | |
637 | pag->pagf_metadata = 0; | |
638 | xfs_perag_put(pag); | |
639 | continue; | |
2d2194f6 CM |
640 | } |
641 | ||
642 | pag = xfs_perag_get(mp, index); | |
643 | pag->pagi_inodeok = 1; | |
4056c1d0 | 644 | maxagi++; |
2d2194f6 CM |
645 | if (index < max_metadata) |
646 | pag->pagf_metadata = 1; | |
647 | xfs_perag_put(pag); | |
648 | } | |
4056c1d0 CM |
649 | mp->m_flags |= (XFS_MOUNT_32BITINODES | |
650 | XFS_MOUNT_SMALL_INUMS); | |
651 | ||
652 | return maxagi; | |
2d2194f6 CM |
653 | } |
654 | ||
655 | xfs_agnumber_t | |
656 | xfs_set_inode64(struct xfs_mount *mp) | |
657 | { | |
658 | xfs_agnumber_t index = 0; | |
659 | ||
660 | for (index = 0; index < mp->m_sb.sb_agcount; index++) { | |
661 | struct xfs_perag *pag; | |
662 | ||
663 | pag = xfs_perag_get(mp, index); | |
664 | pag->pagi_inodeok = 1; | |
665 | pag->pagf_metadata = 0; | |
666 | xfs_perag_put(pag); | |
667 | } | |
668 | ||
669 | /* There is no need for lock protection on m_flags, | |
670 | * the rw_semaphore of the VFS superblock is locked | |
671 | * during mount/umount/remount operations, so this is | |
672 | * enough to avoid concurency on the m_flags field | |
673 | */ | |
674 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
675 | XFS_MOUNT_SMALL_INUMS); | |
676 | return index; | |
677 | } | |
678 | ||
3180e66d | 679 | STATIC int |
1da177e4 LT |
680 | xfs_blkdev_get( |
681 | xfs_mount_t *mp, | |
682 | const char *name, | |
683 | struct block_device **bdevp) | |
684 | { | |
685 | int error = 0; | |
686 | ||
d4d77629 TH |
687 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
688 | mp); | |
1da177e4 LT |
689 | if (IS_ERR(*bdevp)) { |
690 | error = PTR_ERR(*bdevp); | |
4f10700a | 691 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
692 | } |
693 | ||
694 | return -error; | |
695 | } | |
696 | ||
3180e66d | 697 | STATIC void |
1da177e4 LT |
698 | xfs_blkdev_put( |
699 | struct block_device *bdev) | |
700 | { | |
701 | if (bdev) | |
e525fd89 | 702 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
703 | } |
704 | ||
f538d4da CH |
705 | void |
706 | xfs_blkdev_issue_flush( | |
707 | xfs_buftarg_t *buftarg) | |
708 | { | |
7582df51 | 709 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 710 | } |
1da177e4 | 711 | |
19f354d4 CH |
712 | STATIC void |
713 | xfs_close_devices( | |
714 | struct xfs_mount *mp) | |
715 | { | |
716 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 717 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 718 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 719 | xfs_blkdev_put(logdev); |
19f354d4 CH |
720 | } |
721 | if (mp->m_rtdev_targp) { | |
c032bfcf | 722 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 723 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 724 | xfs_blkdev_put(rtdev); |
19f354d4 | 725 | } |
b7963133 | 726 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
727 | } |
728 | ||
729 | /* | |
730 | * The file system configurations are: | |
731 | * (1) device (partition) with data and internal log | |
732 | * (2) logical volume with data and log subvolumes. | |
733 | * (3) logical volume with data, log, and realtime subvolumes. | |
734 | * | |
735 | * We only have to handle opening the log and realtime volumes here if | |
736 | * they are present. The data subvolume has already been opened by | |
737 | * get_sb_bdev() and is stored in sb->s_bdev. | |
738 | */ | |
739 | STATIC int | |
740 | xfs_open_devices( | |
9d565ffa | 741 | struct xfs_mount *mp) |
19f354d4 CH |
742 | { |
743 | struct block_device *ddev = mp->m_super->s_bdev; | |
744 | struct block_device *logdev = NULL, *rtdev = NULL; | |
745 | int error; | |
746 | ||
747 | /* | |
748 | * Open real time and log devices - order is important. | |
749 | */ | |
9d565ffa CH |
750 | if (mp->m_logname) { |
751 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
752 | if (error) |
753 | goto out; | |
754 | } | |
755 | ||
9d565ffa CH |
756 | if (mp->m_rtname) { |
757 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
758 | if (error) |
759 | goto out_close_logdev; | |
760 | ||
761 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
762 | xfs_warn(mp, |
763 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
19f354d4 CH |
764 | error = EINVAL; |
765 | goto out_close_rtdev; | |
766 | } | |
767 | } | |
768 | ||
769 | /* | |
770 | * Setup xfs_mount buffer target pointers | |
771 | */ | |
772 | error = ENOMEM; | |
ebad861b | 773 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
774 | if (!mp->m_ddev_targp) |
775 | goto out_close_rtdev; | |
776 | ||
777 | if (rtdev) { | |
ebad861b DC |
778 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
779 | mp->m_fsname); | |
19f354d4 CH |
780 | if (!mp->m_rtdev_targp) |
781 | goto out_free_ddev_targ; | |
782 | } | |
783 | ||
784 | if (logdev && logdev != ddev) { | |
ebad861b DC |
785 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
786 | mp->m_fsname); | |
19f354d4 CH |
787 | if (!mp->m_logdev_targp) |
788 | goto out_free_rtdev_targ; | |
789 | } else { | |
790 | mp->m_logdev_targp = mp->m_ddev_targp; | |
791 | } | |
792 | ||
793 | return 0; | |
794 | ||
795 | out_free_rtdev_targ: | |
796 | if (mp->m_rtdev_targp) | |
b7963133 | 797 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 798 | out_free_ddev_targ: |
b7963133 | 799 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
800 | out_close_rtdev: |
801 | if (rtdev) | |
802 | xfs_blkdev_put(rtdev); | |
803 | out_close_logdev: | |
804 | if (logdev && logdev != ddev) | |
805 | xfs_blkdev_put(logdev); | |
806 | out: | |
807 | return error; | |
808 | } | |
809 | ||
e34b562c CH |
810 | /* |
811 | * Setup xfs_mount buffer target pointers based on superblock | |
812 | */ | |
813 | STATIC int | |
814 | xfs_setup_devices( | |
815 | struct xfs_mount *mp) | |
816 | { | |
817 | int error; | |
19f354d4 | 818 | |
e34b562c CH |
819 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
820 | mp->m_sb.sb_sectsize); | |
821 | if (error) | |
822 | return error; | |
823 | ||
824 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
825 | unsigned int log_sector_size = BBSIZE; | |
826 | ||
827 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
828 | log_sector_size = mp->m_sb.sb_logsectsize; | |
829 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
830 | mp->m_sb.sb_blocksize, | |
831 | log_sector_size); | |
832 | if (error) | |
833 | return error; | |
834 | } | |
835 | if (mp->m_rtdev_targp) { | |
836 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
837 | mp->m_sb.sb_blocksize, | |
838 | mp->m_sb.sb_sectsize); | |
839 | if (error) | |
840 | return error; | |
841 | } | |
842 | ||
843 | return 0; | |
844 | } | |
19f354d4 | 845 | |
aa6bf01d CH |
846 | STATIC int |
847 | xfs_init_mount_workqueues( | |
848 | struct xfs_mount *mp) | |
849 | { | |
850 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", | |
851 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
852 | if (!mp->m_data_workqueue) | |
853 | goto out; | |
854 | ||
855 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
856 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
857 | if (!mp->m_unwritten_workqueue) | |
858 | goto out_destroy_data_iodone_queue; | |
859 | ||
4c2d542f DC |
860 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
861 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
862 | if (!mp->m_cil_workqueue) | |
863 | goto out_destroy_unwritten; | |
5889608d DC |
864 | |
865 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
7a378c9a | 866 | 0, 0, mp->m_fsname); |
5889608d DC |
867 | if (!mp->m_reclaim_workqueue) |
868 | goto out_destroy_cil; | |
869 | ||
870 | mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", | |
7a378c9a | 871 | 0, 0, mp->m_fsname); |
5889608d DC |
872 | if (!mp->m_log_workqueue) |
873 | goto out_destroy_reclaim; | |
874 | ||
579b62fa | 875 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
7a378c9a | 876 | 0, 0, mp->m_fsname); |
579b62fa BF |
877 | if (!mp->m_eofblocks_workqueue) |
878 | goto out_destroy_log; | |
879 | ||
aa6bf01d CH |
880 | return 0; |
881 | ||
579b62fa BF |
882 | out_destroy_log: |
883 | destroy_workqueue(mp->m_log_workqueue); | |
5889608d DC |
884 | out_destroy_reclaim: |
885 | destroy_workqueue(mp->m_reclaim_workqueue); | |
886 | out_destroy_cil: | |
887 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
888 | out_destroy_unwritten: |
889 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
890 | out_destroy_data_iodone_queue: |
891 | destroy_workqueue(mp->m_data_workqueue); | |
892 | out: | |
893 | return -ENOMEM; | |
894 | } | |
895 | ||
896 | STATIC void | |
897 | xfs_destroy_mount_workqueues( | |
898 | struct xfs_mount *mp) | |
899 | { | |
579b62fa | 900 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d DC |
901 | destroy_workqueue(mp->m_log_workqueue); |
902 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 903 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
904 | destroy_workqueue(mp->m_data_workqueue); |
905 | destroy_workqueue(mp->m_unwritten_workqueue); | |
906 | } | |
907 | ||
9aa05000 DC |
908 | /* |
909 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
910 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
911 | * for IO to complete so that we effectively throttle multiple callers to the | |
912 | * rate at which IO is completing. | |
913 | */ | |
914 | void | |
915 | xfs_flush_inodes( | |
916 | struct xfs_mount *mp) | |
917 | { | |
918 | struct super_block *sb = mp->m_super; | |
919 | ||
920 | if (down_read_trylock(&sb->s_umount)) { | |
921 | sync_inodes_sb(sb); | |
922 | up_read(&sb->s_umount); | |
923 | } | |
924 | } | |
925 | ||
bf904248 | 926 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 927 | STATIC struct inode * |
a50cd269 | 928 | xfs_fs_alloc_inode( |
1da177e4 LT |
929 | struct super_block *sb) |
930 | { | |
bf904248 | 931 | BUG(); |
493dca61 | 932 | return NULL; |
1da177e4 LT |
933 | } |
934 | ||
bf904248 | 935 | /* |
99fa8cb3 DC |
936 | * Now that the generic code is guaranteed not to be accessing |
937 | * the linux inode, we can reclaim the inode. | |
bf904248 | 938 | */ |
1da177e4 | 939 | STATIC void |
a50cd269 | 940 | xfs_fs_destroy_inode( |
848ce8f7 | 941 | struct inode *inode) |
1da177e4 | 942 | { |
848ce8f7 CH |
943 | struct xfs_inode *ip = XFS_I(inode); |
944 | ||
cca28fb8 | 945 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
946 | |
947 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
948 | |
949 | /* bad inode, get out here ASAP */ | |
950 | if (is_bad_inode(inode)) | |
951 | goto out_reclaim; | |
952 | ||
848ce8f7 CH |
953 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
954 | ||
955 | /* | |
956 | * We should never get here with one of the reclaim flags already set. | |
957 | */ | |
958 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
959 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
960 | ||
961 | /* | |
57817c68 DC |
962 | * We always use background reclaim here because even if the |
963 | * inode is clean, it still may be under IO and hence we have | |
964 | * to take the flush lock. The background reclaim path handles | |
965 | * this more efficiently than we can here, so simply let background | |
966 | * reclaim tear down all inodes. | |
848ce8f7 | 967 | */ |
848ce8f7 | 968 | out_reclaim: |
57817c68 | 969 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
970 | } |
971 | ||
07c8f675 DC |
972 | /* |
973 | * Slab object creation initialisation for the XFS inode. | |
974 | * This covers only the idempotent fields in the XFS inode; | |
975 | * all other fields need to be initialised on allocation | |
b595076a | 976 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
977 | * fields in the xfs inode that left in the initialise state |
978 | * when freeing the inode. | |
979 | */ | |
bf904248 DC |
980 | STATIC void |
981 | xfs_fs_inode_init_once( | |
07c8f675 DC |
982 | void *inode) |
983 | { | |
984 | struct xfs_inode *ip = inode; | |
985 | ||
986 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
987 | |
988 | /* vfs inode */ | |
989 | inode_init_once(VFS_I(ip)); | |
990 | ||
991 | /* xfs inode */ | |
07c8f675 DC |
992 | atomic_set(&ip->i_pincount, 0); |
993 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
994 | |
995 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
996 | "xfsino", ip->i_ino); | |
07c8f675 DC |
997 | } |
998 | ||
1da177e4 | 999 | STATIC void |
b57922d9 | 1000 | xfs_fs_evict_inode( |
1da177e4 LT |
1001 | struct inode *inode) |
1002 | { | |
1543d79c | 1003 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1004 | |
4f59af75 CH |
1005 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
1006 | ||
b57922d9 | 1007 | trace_xfs_evict_inode(ip); |
cca28fb8 | 1008 | |
b57922d9 | 1009 | truncate_inode_pages(&inode->i_data, 0); |
dbd5768f | 1010 | clear_inode(inode); |
99fa8cb3 DC |
1011 | XFS_STATS_INC(vn_rele); |
1012 | XFS_STATS_INC(vn_remove); | |
1013 | XFS_STATS_DEC(vn_active); | |
1014 | ||
1015 | xfs_inactive(ip); | |
56d433e4 | 1016 | } |
1da177e4 | 1017 | |
5132ba8f DC |
1018 | /* |
1019 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
1020 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
1021 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
1022 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
1023 | * we drop the final reference on. | |
1024 | */ | |
1025 | STATIC int | |
1026 | xfs_fs_drop_inode( | |
1027 | struct inode *inode) | |
1028 | { | |
1029 | struct xfs_inode *ip = XFS_I(inode); | |
1030 | ||
1031 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1032 | } | |
1033 | ||
a738159d CH |
1034 | STATIC void |
1035 | xfs_free_fsname( | |
1036 | struct xfs_mount *mp) | |
1037 | { | |
1038 | kfree(mp->m_fsname); | |
1039 | kfree(mp->m_rtname); | |
1040 | kfree(mp->m_logname); | |
1041 | } | |
1042 | ||
1da177e4 | 1043 | STATIC void |
a50cd269 | 1044 | xfs_fs_put_super( |
1da177e4 LT |
1045 | struct super_block *sb) |
1046 | { | |
745f6919 | 1047 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1048 | |
7e18530b DC |
1049 | xfs_filestream_unmount(mp); |
1050 | xfs_unmountfs(mp); | |
1051 | ||
6203300e | 1052 | xfs_freesb(mp); |
c962fb79 | 1053 | xfs_icsb_destroy_counters(mp); |
aa6bf01d | 1054 | xfs_destroy_mount_workqueues(mp); |
19f354d4 | 1055 | xfs_close_devices(mp); |
a738159d | 1056 | xfs_free_fsname(mp); |
c962fb79 | 1057 | kfree(mp); |
1da177e4 LT |
1058 | } |
1059 | ||
1da177e4 | 1060 | STATIC int |
69961a26 | 1061 | xfs_fs_sync_fs( |
1da177e4 LT |
1062 | struct super_block *sb, |
1063 | int wait) | |
1064 | { | |
745f6919 | 1065 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1066 | |
e893bffd | 1067 | /* |
34625c66 | 1068 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1069 | */ |
34625c66 | 1070 | if (!wait) |
69961a26 | 1071 | return 0; |
69961a26 | 1072 | |
34061f5c | 1073 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1074 | if (laptop_mode) { |
1da177e4 LT |
1075 | /* |
1076 | * The disk must be active because we're syncing. | |
f661f1e0 | 1077 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1078 | * active) instead of later (when it might not be). |
1079 | */ | |
f661f1e0 | 1080 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1081 | } |
1082 | ||
69961a26 | 1083 | return 0; |
1da177e4 LT |
1084 | } |
1085 | ||
1086 | STATIC int | |
a50cd269 | 1087 | xfs_fs_statfs( |
726c3342 | 1088 | struct dentry *dentry, |
1da177e4 LT |
1089 | struct kstatfs *statp) |
1090 | { | |
4ca488eb CH |
1091 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1092 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1093 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1094 | __uint64_t fakeinos, id; |
1095 | xfs_extlen_t lsize; | |
2fe33661 | 1096 | __int64_t ffree; |
4ca488eb CH |
1097 | |
1098 | statp->f_type = XFS_SB_MAGIC; | |
1099 | statp->f_namelen = MAXNAMELEN - 1; | |
1100 | ||
1101 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1102 | statp->f_fsid.val[0] = (u32)id; | |
1103 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1104 | ||
d4d90b57 | 1105 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1106 | |
1107 | spin_lock(&mp->m_sb_lock); | |
1108 | statp->f_bsize = sbp->sb_blocksize; | |
1109 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1110 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1111 | statp->f_bfree = statp->f_bavail = | |
1112 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1113 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1114 | statp->f_files = |
1115 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1116 | if (mp->m_maxicount) | |
a19d9f88 CH |
1117 | statp->f_files = min_t(typeof(statp->f_files), |
1118 | statp->f_files, | |
1119 | mp->m_maxicount); | |
2fe33661 SB |
1120 | |
1121 | /* make sure statp->f_ffree does not underflow */ | |
1122 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1123 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1124 | ||
4ca488eb CH |
1125 | spin_unlock(&mp->m_sb_lock); |
1126 | ||
da5bf95e | 1127 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1128 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1129 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1130 | xfs_qm_statvfs(ip, statp); |
4ca488eb | 1131 | return 0; |
1da177e4 LT |
1132 | } |
1133 | ||
d5db0f97 ES |
1134 | STATIC void |
1135 | xfs_save_resvblks(struct xfs_mount *mp) | |
1136 | { | |
1137 | __uint64_t resblks = 0; | |
1138 | ||
1139 | mp->m_resblks_save = mp->m_resblks; | |
1140 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1141 | } | |
1142 | ||
1143 | STATIC void | |
1144 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1145 | { | |
1146 | __uint64_t resblks; | |
1147 | ||
1148 | if (mp->m_resblks_save) { | |
1149 | resblks = mp->m_resblks_save; | |
1150 | mp->m_resblks_save = 0; | |
1151 | } else | |
1152 | resblks = xfs_default_resblks(mp); | |
1153 | ||
1154 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1155 | } | |
1156 | ||
c7eea6f7 DC |
1157 | /* |
1158 | * Trigger writeback of all the dirty metadata in the file system. | |
1159 | * | |
1160 | * This ensures that the metadata is written to their location on disk rather | |
1161 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1162 | * there is no log replay required to write the inodes to disk - this is the |
1163 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1164 | * |
c75921a7 DC |
1165 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1166 | * it is started again when appropriate. | |
c7eea6f7 DC |
1167 | */ |
1168 | void | |
1169 | xfs_quiesce_attr( | |
1170 | struct xfs_mount *mp) | |
1171 | { | |
1172 | int error = 0; | |
1173 | ||
1174 | /* wait for all modifications to complete */ | |
1175 | while (atomic_read(&mp->m_active_trans) > 0) | |
1176 | delay(100); | |
1177 | ||
1178 | /* force the log to unpin objects from the now complete transactions */ | |
1179 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1180 | ||
1181 | /* reclaim inodes to do any IO before the freeze completes */ | |
1182 | xfs_reclaim_inodes(mp, 0); | |
1183 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1184 | ||
c7eea6f7 DC |
1185 | /* Push the superblock and write an unmount record */ |
1186 | error = xfs_log_sbcount(mp); | |
1187 | if (error) | |
1188 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1189 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1190 | /* |
c75921a7 DC |
1191 | * Just warn here till VFS can correctly support |
1192 | * read-only remount without racing. | |
c7eea6f7 | 1193 | */ |
c75921a7 | 1194 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1195 | |
c75921a7 | 1196 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1197 | } |
1198 | ||
1da177e4 | 1199 | STATIC int |
a50cd269 | 1200 | xfs_fs_remount( |
1da177e4 LT |
1201 | struct super_block *sb, |
1202 | int *flags, | |
1203 | char *options) | |
1204 | { | |
745f6919 | 1205 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1206 | substring_t args[MAX_OPT_ARGS]; |
1207 | char *p; | |
7884bc86 | 1208 | int error; |
1da177e4 | 1209 | |
62a877e3 CH |
1210 | while ((p = strsep(&options, ",")) != NULL) { |
1211 | int token; | |
bdd907ba | 1212 | |
62a877e3 CH |
1213 | if (!*p) |
1214 | continue; | |
48b62a1a | 1215 | |
62a877e3 CH |
1216 | token = match_token(p, tokens, args); |
1217 | switch (token) { | |
1218 | case Opt_barrier: | |
48b62a1a | 1219 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1220 | break; |
1221 | case Opt_nobarrier: | |
48b62a1a | 1222 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1223 | break; |
c3a58fec | 1224 | case Opt_inode64: |
4c083722 | 1225 | mp->m_maxagi = xfs_set_inode64(mp); |
c3a58fec | 1226 | break; |
2ea03929 CM |
1227 | case Opt_inode32: |
1228 | mp->m_maxagi = xfs_set_inode32(mp); | |
1229 | break; | |
62a877e3 | 1230 | default: |
6efdf281 CH |
1231 | /* |
1232 | * Logically we would return an error here to prevent | |
1233 | * users from believing they might have changed | |
1234 | * mount options using remount which can't be changed. | |
1235 | * | |
1236 | * But unfortunately mount(8) adds all options from | |
1237 | * mtab and fstab to the mount arguments in some cases | |
1238 | * so we can't blindly reject options, but have to | |
1239 | * check for each specified option if it actually | |
1240 | * differs from the currently set option and only | |
1241 | * reject it if that's the case. | |
1242 | * | |
1243 | * Until that is implemented we return success for | |
1244 | * every remount request, and silently ignore all | |
1245 | * options that we can't actually change. | |
1246 | */ | |
1247 | #if 0 | |
4f10700a DC |
1248 | xfs_info(mp, |
1249 | "mount option \"%s\" not supported for remount\n", p); | |
62a877e3 | 1250 | return -EINVAL; |
6efdf281 | 1251 | #else |
6c5e51da | 1252 | break; |
6efdf281 | 1253 | #endif |
48b62a1a | 1254 | } |
62a877e3 CH |
1255 | } |
1256 | ||
7884bc86 | 1257 | /* ro -> rw */ |
62a877e3 CH |
1258 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1259 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1260 | |
1261 | /* | |
1262 | * If this is the first remount to writeable state we | |
1263 | * might have some superblock changes to update. | |
1264 | */ | |
1265 | if (mp->m_update_flags) { | |
1266 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1267 | if (error) { | |
4f10700a | 1268 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1269 | return error; |
1270 | } | |
1271 | mp->m_update_flags = 0; | |
1272 | } | |
cbe132a8 DC |
1273 | |
1274 | /* | |
1275 | * Fill out the reserve pool if it is empty. Use the stashed | |
1276 | * value if it is non-zero, otherwise go with the default. | |
1277 | */ | |
d5db0f97 | 1278 | xfs_restore_resvblks(mp); |
f661f1e0 | 1279 | xfs_log_work_queue(mp); |
62a877e3 CH |
1280 | } |
1281 | ||
1282 | /* rw -> ro */ | |
1283 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1284 | /* |
34061f5c DC |
1285 | * Before we sync the metadata, we need to free up the reserve |
1286 | * block pool so that the used block count in the superblock on | |
1287 | * disk is correct at the end of the remount. Stash the current | |
1288 | * reserve pool size so that if we get remounted rw, we can | |
1289 | * return it to the same size. | |
cbe132a8 | 1290 | */ |
d5db0f97 | 1291 | xfs_save_resvblks(mp); |
76bf105c | 1292 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1293 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1294 | } | |
1295 | ||
62a877e3 | 1296 | return 0; |
1da177e4 LT |
1297 | } |
1298 | ||
9909c4aa CH |
1299 | /* |
1300 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1301 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1302 | * record to dirty the log in case of a crash while frozen. |
1303 | */ | |
c4be0c1d TS |
1304 | STATIC int |
1305 | xfs_fs_freeze( | |
1da177e4 LT |
1306 | struct super_block *sb) |
1307 | { | |
9909c4aa CH |
1308 | struct xfs_mount *mp = XFS_M(sb); |
1309 | ||
d5db0f97 | 1310 | xfs_save_resvblks(mp); |
76bf105c | 1311 | xfs_quiesce_attr(mp); |
c58efdb4 | 1312 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1313 | } |
1314 | ||
d5db0f97 ES |
1315 | STATIC int |
1316 | xfs_fs_unfreeze( | |
1317 | struct super_block *sb) | |
1318 | { | |
1319 | struct xfs_mount *mp = XFS_M(sb); | |
1320 | ||
1321 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1322 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1323 | return 0; |
1324 | } | |
1325 | ||
1da177e4 | 1326 | STATIC int |
a50cd269 | 1327 | xfs_fs_show_options( |
1da177e4 | 1328 | struct seq_file *m, |
34c80b1d | 1329 | struct dentry *root) |
1da177e4 | 1330 | { |
34c80b1d | 1331 | return -xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1332 | } |
1333 | ||
f8f15e42 CH |
1334 | /* |
1335 | * This function fills in xfs_mount_t fields based on mount args. | |
1336 | * Note: the superblock _has_ now been read in. | |
1337 | */ | |
1338 | STATIC int | |
1339 | xfs_finish_flags( | |
f8f15e42 CH |
1340 | struct xfs_mount *mp) |
1341 | { | |
1342 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1343 | ||
025dfdaf | 1344 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1345 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1346 | if (mp->m_logbsize <= 0 && |
1347 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1348 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1349 | } else if (mp->m_logbsize > 0 && |
1350 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1351 | xfs_warn(mp, |
1352 | "logbuf size must be greater than or equal to log stripe size"); | |
f8f15e42 CH |
1353 | return XFS_ERROR(EINVAL); |
1354 | } | |
1355 | } else { | |
1356 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1357 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1358 | xfs_warn(mp, |
1359 | "logbuf size for version 1 logs must be 16K or 32K"); | |
f8f15e42 CH |
1360 | return XFS_ERROR(EINVAL); |
1361 | } | |
1362 | } | |
1363 | ||
d3eaace8 DC |
1364 | /* |
1365 | * V5 filesystems always use attr2 format for attributes. | |
1366 | */ | |
1367 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1368 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
1369 | xfs_warn(mp, | |
1370 | "Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.", | |
1371 | MNTOPT_NOATTR2, MNTOPT_ATTR2); | |
1372 | return XFS_ERROR(EINVAL); | |
1373 | } | |
1374 | ||
f8f15e42 CH |
1375 | /* |
1376 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1377 | * told by noattr2 to turn it off | |
1378 | */ | |
1379 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1380 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1381 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1382 | ||
1383 | /* | |
1384 | * prohibit r/w mounts of read-only filesystems | |
1385 | */ | |
1386 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1387 | xfs_warn(mp, |
1388 | "cannot mount a read-only filesystem as read-write"); | |
f8f15e42 CH |
1389 | return XFS_ERROR(EROFS); |
1390 | } | |
1391 | ||
d892d586 CS |
1392 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1393 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1394 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1395 | xfs_warn(mp, | |
1396 | "Super block does not support project and group quota together"); | |
1397 | return XFS_ERROR(EINVAL); | |
1398 | } | |
1399 | ||
f8f15e42 CH |
1400 | return 0; |
1401 | } | |
1402 | ||
1da177e4 | 1403 | STATIC int |
a50cd269 | 1404 | xfs_fs_fill_super( |
1da177e4 LT |
1405 | struct super_block *sb, |
1406 | void *data, | |
1407 | int silent) | |
1408 | { | |
f3dcc13f | 1409 | struct inode *root; |
745f6919 | 1410 | struct xfs_mount *mp = NULL; |
c962fb79 | 1411 | int flags = 0, error = ENOMEM; |
bdd907ba | 1412 | |
c962fb79 CH |
1413 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1414 | if (!mp) | |
9d565ffa | 1415 | goto out; |
1da177e4 | 1416 | |
c962fb79 | 1417 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1418 | mutex_init(&mp->m_growlock); |
1419 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1420 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1421 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
74394496 | 1422 | |
b267ce99 CH |
1423 | mp->m_super = sb; |
1424 | sb->s_fs_info = mp; | |
1da177e4 | 1425 | |
288699fe | 1426 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1427 | if (error) |
9d565ffa | 1428 | goto out_free_fsname; |
1da177e4 LT |
1429 | |
1430 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1431 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1432 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1433 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1434 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1435 | #endif |
a50cd269 | 1436 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1437 | |
9d565ffa | 1438 | if (silent) |
f8f15e42 CH |
1439 | flags |= XFS_MFSI_QUIET; |
1440 | ||
9d565ffa | 1441 | error = xfs_open_devices(mp); |
19f354d4 | 1442 | if (error) |
288699fe | 1443 | goto out_free_fsname; |
f8f15e42 | 1444 | |
aa6bf01d | 1445 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1446 | if (error) |
1447 | goto out_close_devices; | |
c962fb79 | 1448 | |
aa6bf01d CH |
1449 | error = xfs_icsb_init_counters(mp); |
1450 | if (error) | |
1451 | goto out_destroy_workqueues; | |
1452 | ||
f8f15e42 CH |
1453 | error = xfs_readsb(mp, flags); |
1454 | if (error) | |
9d565ffa CH |
1455 | goto out_destroy_counters; |
1456 | ||
1457 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1458 | if (error) |
effa2eda | 1459 | goto out_free_sb; |
f8f15e42 | 1460 | |
e34b562c | 1461 | error = xfs_setup_devices(mp); |
19f354d4 | 1462 | if (error) |
effa2eda | 1463 | goto out_free_sb; |
f8f15e42 | 1464 | |
f8f15e42 CH |
1465 | error = xfs_filestream_mount(mp); |
1466 | if (error) | |
effa2eda | 1467 | goto out_free_sb; |
f8f15e42 | 1468 | |
704b2907 DC |
1469 | /* |
1470 | * we must configure the block size in the superblock before we run the | |
1471 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1472 | */ |
4ca488eb CH |
1473 | sb->s_magic = XFS_SB_MAGIC; |
1474 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1475 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1476 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1477 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1478 | sb->s_time_gran = 1; |
1479 | set_posix_acl_flag(sb); | |
1480 | ||
dc037ad7 DC |
1481 | /* version 5 superblocks support inode version counters. */ |
1482 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
1483 | sb->s_flags |= MS_I_VERSION; | |
1484 | ||
8a00ebe4 | 1485 | error = xfs_mountfs(mp); |
2bcf6e97 | 1486 | if (error) |
7e18530b | 1487 | goto out_filestream_unmount; |
704b2907 | 1488 | |
01651646 | 1489 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1490 | if (!root) { |
cbc89dcf | 1491 | error = ENOENT; |
8a00ebe4 | 1492 | goto out_unmount; |
cbc89dcf | 1493 | } |
f3dcc13f CH |
1494 | if (is_bad_inode(root)) { |
1495 | error = EINVAL; | |
8a00ebe4 | 1496 | goto out_unmount; |
1da177e4 | 1497 | } |
48fde701 | 1498 | sb->s_root = d_make_root(root); |
f3dcc13f CH |
1499 | if (!sb->s_root) { |
1500 | error = ENOMEM; | |
8a00ebe4 | 1501 | goto out_unmount; |
1da177e4 | 1502 | } |
74394496 | 1503 | |
1da177e4 | 1504 | return 0; |
33c7a2bc | 1505 | |
7e18530b | 1506 | out_filestream_unmount: |
120226c1 | 1507 | xfs_filestream_unmount(mp); |
effa2eda CH |
1508 | out_free_sb: |
1509 | xfs_freesb(mp); | |
9d565ffa | 1510 | out_destroy_counters: |
c962fb79 | 1511 | xfs_icsb_destroy_counters(mp); |
aa6bf01d CH |
1512 | out_destroy_workqueues: |
1513 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1514 | out_close_devices: |
19f354d4 | 1515 | xfs_close_devices(mp); |
9d565ffa CH |
1516 | out_free_fsname: |
1517 | xfs_free_fsname(mp); | |
c962fb79 | 1518 | kfree(mp); |
9d565ffa | 1519 | out: |
c962fb79 | 1520 | return -error; |
f8f15e42 | 1521 | |
2bcf6e97 | 1522 | out_unmount: |
e48ad316 | 1523 | xfs_filestream_unmount(mp); |
19f354d4 | 1524 | xfs_unmountfs(mp); |
6203300e | 1525 | goto out_free_sb; |
1da177e4 LT |
1526 | } |
1527 | ||
152a0836 AV |
1528 | STATIC struct dentry * |
1529 | xfs_fs_mount( | |
1da177e4 LT |
1530 | struct file_system_type *fs_type, |
1531 | int flags, | |
1532 | const char *dev_name, | |
152a0836 | 1533 | void *data) |
1da177e4 | 1534 | { |
152a0836 | 1535 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1536 | } |
1537 | ||
0a234c6d | 1538 | static long |
8daaa831 | 1539 | xfs_fs_nr_cached_objects( |
9b17c623 DC |
1540 | struct super_block *sb, |
1541 | int nid) | |
8daaa831 DC |
1542 | { |
1543 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1544 | } | |
1545 | ||
0a234c6d | 1546 | static long |
8daaa831 DC |
1547 | xfs_fs_free_cached_objects( |
1548 | struct super_block *sb, | |
9b17c623 DC |
1549 | long nr_to_scan, |
1550 | int nid) | |
8daaa831 | 1551 | { |
0a234c6d | 1552 | return xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); |
8daaa831 DC |
1553 | } |
1554 | ||
b87221de | 1555 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1556 | .alloc_inode = xfs_fs_alloc_inode, |
1557 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1558 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1559 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1560 | .put_super = xfs_fs_put_super, |
69961a26 | 1561 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1562 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1563 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1564 | .statfs = xfs_fs_statfs, |
1565 | .remount_fs = xfs_fs_remount, | |
1566 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1567 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1568 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1569 | }; |
1570 | ||
5085b607 | 1571 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1572 | .owner = THIS_MODULE, |
1573 | .name = "xfs", | |
152a0836 | 1574 | .mount = xfs_fs_mount, |
1da177e4 LT |
1575 | .kill_sb = kill_block_super, |
1576 | .fs_flags = FS_REQUIRES_DEV, | |
1577 | }; | |
7f78e035 | 1578 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1579 | |
9f8868ff CH |
1580 | STATIC int __init |
1581 | xfs_init_zones(void) | |
1582 | { | |
9f8868ff CH |
1583 | |
1584 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1585 | if (!xfs_ioend_zone) | |
bf904248 | 1586 | goto out; |
9f8868ff CH |
1587 | |
1588 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1589 | xfs_ioend_zone); | |
1590 | if (!xfs_ioend_pool) | |
1591 | goto out_destroy_ioend_zone; | |
1592 | ||
1593 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1594 | "xfs_log_ticket"); | |
1595 | if (!xfs_log_ticket_zone) | |
1596 | goto out_destroy_ioend_pool; | |
1597 | ||
1598 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1599 | "xfs_bmap_free_item"); | |
1600 | if (!xfs_bmap_free_item_zone) | |
1601 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1602 | |
9f8868ff CH |
1603 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1604 | "xfs_btree_cur"); | |
1605 | if (!xfs_btree_cur_zone) | |
1606 | goto out_destroy_bmap_free_item_zone; | |
1607 | ||
1608 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1609 | "xfs_da_state"); | |
1610 | if (!xfs_da_state_zone) | |
1611 | goto out_destroy_btree_cur_zone; | |
1612 | ||
9f8868ff CH |
1613 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1614 | if (!xfs_ifork_zone) | |
1d9025e5 | 1615 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1616 | |
1617 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1618 | if (!xfs_trans_zone) | |
1619 | goto out_destroy_ifork_zone; | |
1620 | ||
e98c414f CH |
1621 | xfs_log_item_desc_zone = |
1622 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1623 | "xfs_log_item_desc"); | |
1624 | if (!xfs_log_item_desc_zone) | |
1625 | goto out_destroy_trans_zone; | |
1626 | ||
9f8868ff CH |
1627 | /* |
1628 | * The size of the zone allocated buf log item is the maximum | |
1629 | * size possible under XFS. This wastes a little bit of memory, | |
1630 | * but it is much faster. | |
1631 | */ | |
77c1a08f DC |
1632 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1633 | "xfs_buf_item"); | |
9f8868ff | 1634 | if (!xfs_buf_item_zone) |
e98c414f | 1635 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1636 | |
1637 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1638 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1639 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1640 | if (!xfs_efd_zone) | |
1641 | goto out_destroy_buf_item_zone; | |
1642 | ||
1643 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1644 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1645 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1646 | if (!xfs_efi_zone) | |
1647 | goto out_destroy_efd_zone; | |
1648 | ||
1649 | xfs_inode_zone = | |
1650 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1651 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1652 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1653 | if (!xfs_inode_zone) |
1654 | goto out_destroy_efi_zone; | |
1655 | ||
1656 | xfs_ili_zone = | |
1657 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1658 | KM_ZONE_SPREAD, NULL); | |
1659 | if (!xfs_ili_zone) | |
1660 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1661 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1662 | "xfs_icr"); | |
1663 | if (!xfs_icreate_zone) | |
1664 | goto out_destroy_ili_zone; | |
9f8868ff | 1665 | |
9f8868ff CH |
1666 | return 0; |
1667 | ||
3ebe7d2d DC |
1668 | out_destroy_ili_zone: |
1669 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1670 | out_destroy_inode_zone: |
1671 | kmem_zone_destroy(xfs_inode_zone); | |
1672 | out_destroy_efi_zone: | |
1673 | kmem_zone_destroy(xfs_efi_zone); | |
1674 | out_destroy_efd_zone: | |
1675 | kmem_zone_destroy(xfs_efd_zone); | |
1676 | out_destroy_buf_item_zone: | |
1677 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1678 | out_destroy_log_item_desc_zone: |
1679 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1680 | out_destroy_trans_zone: |
1681 | kmem_zone_destroy(xfs_trans_zone); | |
1682 | out_destroy_ifork_zone: | |
1683 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1684 | out_destroy_da_state_zone: |
1685 | kmem_zone_destroy(xfs_da_state_zone); | |
1686 | out_destroy_btree_cur_zone: | |
1687 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1688 | out_destroy_bmap_free_item_zone: | |
1689 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1690 | out_destroy_log_ticket_zone: | |
1691 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1692 | out_destroy_ioend_pool: | |
1693 | mempool_destroy(xfs_ioend_pool); | |
1694 | out_destroy_ioend_zone: | |
1695 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1696 | out: |
1697 | return -ENOMEM; | |
1698 | } | |
1699 | ||
1700 | STATIC void | |
1701 | xfs_destroy_zones(void) | |
1702 | { | |
8c0a8537 KS |
1703 | /* |
1704 | * Make sure all delayed rcu free are flushed before we | |
1705 | * destroy caches. | |
1706 | */ | |
1707 | rcu_barrier(); | |
3ebe7d2d | 1708 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
1709 | kmem_zone_destroy(xfs_ili_zone); |
1710 | kmem_zone_destroy(xfs_inode_zone); | |
1711 | kmem_zone_destroy(xfs_efi_zone); | |
1712 | kmem_zone_destroy(xfs_efd_zone); | |
1713 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1714 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1715 | kmem_zone_destroy(xfs_trans_zone); |
1716 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1717 | kmem_zone_destroy(xfs_da_state_zone); |
1718 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1719 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1720 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1721 | mempool_destroy(xfs_ioend_pool); | |
1722 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1723 | |
1724 | } | |
1da177e4 | 1725 | |
0bf6a5bd DC |
1726 | STATIC int __init |
1727 | xfs_init_workqueues(void) | |
1728 | { | |
c999a223 DC |
1729 | /* |
1730 | * The allocation workqueue can be used in memory reclaim situations | |
1731 | * (writepage path), and parallelism is only limited by the number of | |
1732 | * AGs in all the filesystems mounted. Hence use the default large | |
1733 | * max_active value for this workqueue. | |
1734 | */ | |
1735 | xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0); | |
1736 | if (!xfs_alloc_wq) | |
5889608d | 1737 | return -ENOMEM; |
c999a223 | 1738 | |
0bf6a5bd | 1739 | return 0; |
0bf6a5bd DC |
1740 | } |
1741 | ||
39411f81 | 1742 | STATIC void |
0bf6a5bd DC |
1743 | xfs_destroy_workqueues(void) |
1744 | { | |
c999a223 | 1745 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1746 | } |
1747 | ||
1da177e4 | 1748 | STATIC int __init |
9f8868ff | 1749 | init_xfs_fs(void) |
1da177e4 LT |
1750 | { |
1751 | int error; | |
1da177e4 | 1752 | |
65795910 CH |
1753 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1754 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1755 | |
9f8868ff | 1756 | xfs_dir_startup(); |
1da177e4 | 1757 | |
8758280f | 1758 | error = xfs_init_zones(); |
9f8868ff CH |
1759 | if (error) |
1760 | goto out; | |
1761 | ||
0bf6a5bd | 1762 | error = xfs_init_workqueues(); |
9f8868ff | 1763 | if (error) |
0b1b213f | 1764 | goto out_destroy_zones; |
9f8868ff | 1765 | |
0bf6a5bd DC |
1766 | error = xfs_mru_cache_init(); |
1767 | if (error) | |
1768 | goto out_destroy_wq; | |
1769 | ||
9f8868ff CH |
1770 | error = xfs_filestream_init(); |
1771 | if (error) | |
1772 | goto out_mru_cache_uninit; | |
1da177e4 | 1773 | |
ce8e922c | 1774 | error = xfs_buf_init(); |
9f8868ff CH |
1775 | if (error) |
1776 | goto out_filestream_uninit; | |
1777 | ||
1778 | error = xfs_init_procfs(); | |
1779 | if (error) | |
1780 | goto out_buf_terminate; | |
1781 | ||
1782 | error = xfs_sysctl_register(); | |
1783 | if (error) | |
1784 | goto out_cleanup_procfs; | |
1da177e4 | 1785 | |
a05931ce CH |
1786 | error = xfs_qm_init(); |
1787 | if (error) | |
1788 | goto out_sysctl_unregister; | |
1da177e4 LT |
1789 | |
1790 | error = register_filesystem(&xfs_fs_type); | |
1791 | if (error) | |
a05931ce | 1792 | goto out_qm_exit; |
1da177e4 LT |
1793 | return 0; |
1794 | ||
a05931ce CH |
1795 | out_qm_exit: |
1796 | xfs_qm_exit(); | |
9f8868ff CH |
1797 | out_sysctl_unregister: |
1798 | xfs_sysctl_unregister(); | |
1799 | out_cleanup_procfs: | |
1800 | xfs_cleanup_procfs(); | |
1801 | out_buf_terminate: | |
ce8e922c | 1802 | xfs_buf_terminate(); |
9f8868ff CH |
1803 | out_filestream_uninit: |
1804 | xfs_filestream_uninit(); | |
1805 | out_mru_cache_uninit: | |
1806 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1807 | out_destroy_wq: |
1808 | xfs_destroy_workqueues(); | |
9f8868ff | 1809 | out_destroy_zones: |
8758280f | 1810 | xfs_destroy_zones(); |
9f8868ff | 1811 | out: |
1da177e4 LT |
1812 | return error; |
1813 | } | |
1814 | ||
1815 | STATIC void __exit | |
9f8868ff | 1816 | exit_xfs_fs(void) |
1da177e4 | 1817 | { |
a05931ce | 1818 | xfs_qm_exit(); |
1da177e4 | 1819 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1820 | xfs_sysctl_unregister(); |
1821 | xfs_cleanup_procfs(); | |
ce8e922c | 1822 | xfs_buf_terminate(); |
9f8868ff CH |
1823 | xfs_filestream_uninit(); |
1824 | xfs_mru_cache_uninit(); | |
0bf6a5bd | 1825 | xfs_destroy_workqueues(); |
8758280f | 1826 | xfs_destroy_zones(); |
1da177e4 LT |
1827 | } |
1828 | ||
1829 | module_init(init_xfs_fs); | |
1830 | module_exit(exit_xfs_fs); | |
1831 | ||
1832 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1833 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1834 | MODULE_LICENSE("GPL"); |