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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" |
1da177e4 | 20 | #include "xfs_log.h" |
a844f451 | 21 | #include "xfs_inum.h" |
1da177e4 LT |
22 | #include "xfs_trans.h" |
23 | #include "xfs_sb.h" | |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 LT |
25 | #include "xfs_dir2.h" |
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" | |
43 | #include "xfs_utils.h" | |
739bfb2a | 44 | #include "xfs_vnodeops.h" |
a67d7c5f | 45 | #include "xfs_log_priv.h" |
249a8c11 | 46 | #include "xfs_trans_priv.h" |
48b62a1a | 47 | #include "xfs_filestream.h" |
9f8868ff | 48 | #include "xfs_da_btree.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" |
1da177e4 LT |
54 | |
55 | #include <linux/namei.h> | |
56 | #include <linux/init.h> | |
5a0e3ad6 | 57 | #include <linux/slab.h> |
1da177e4 | 58 | #include <linux/mount.h> |
0829c360 | 59 | #include <linux/mempool.h> |
1da177e4 | 60 | #include <linux/writeback.h> |
4df08c52 | 61 | #include <linux/kthread.h> |
7dfb7103 | 62 | #include <linux/freezer.h> |
62a877e3 | 63 | #include <linux/parser.h> |
1da177e4 | 64 | |
b87221de | 65 | static const struct super_operations xfs_super_operations; |
7989cb8e | 66 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 67 | mempool_t *xfs_ioend_pool; |
1da177e4 | 68 | |
a67d7c5f DC |
69 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
70 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
71 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
72 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
73 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
74 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
75 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
76 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
77 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
78 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
79 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
80 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
81 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
82 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
83 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
84 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
85 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
86 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
87 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
88 | * unwritten extent conversion */ | |
89 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f | 90 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
08bf5404 CM |
91 | #define MNTOPT_32BITINODE "inode32" /* inode allocation limited to |
92 | * XFS_MAXINUMBER_32 */ | |
a67d7c5f DC |
93 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
94 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
95 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
96 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
97 | * in stat(). */ | |
98 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
99 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
100 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
101 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
102 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
103 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
104 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
105 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
106 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
107 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
108 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
109 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
110 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
111 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
112 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
113 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ |
114 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ | |
115 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ | |
116 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 117 | |
62a877e3 CH |
118 | /* |
119 | * Table driven mount option parser. | |
120 | * | |
121 | * Currently only used for remount, but it will be used for mount | |
122 | * in the future, too. | |
123 | */ | |
124 | enum { | |
2ea03929 CM |
125 | Opt_barrier, |
126 | Opt_nobarrier, | |
127 | Opt_inode64, | |
128 | Opt_inode32, | |
129 | Opt_err | |
62a877e3 CH |
130 | }; |
131 | ||
a447c093 | 132 | static const match_table_t tokens = { |
62a877e3 CH |
133 | {Opt_barrier, "barrier"}, |
134 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 135 | {Opt_inode64, "inode64"}, |
2ea03929 | 136 | {Opt_inode32, "inode32"}, |
62a877e3 CH |
137 | {Opt_err, NULL} |
138 | }; | |
139 | ||
140 | ||
a67d7c5f DC |
141 | STATIC unsigned long |
142 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
143 | { | |
144 | int last, shift_left_factor = 0; | |
145 | char *value = s; | |
146 | ||
147 | last = strlen(value) - 1; | |
148 | if (value[last] == 'K' || value[last] == 'k') { | |
149 | shift_left_factor = 10; | |
150 | value[last] = '\0'; | |
151 | } | |
152 | if (value[last] == 'M' || value[last] == 'm') { | |
153 | shift_left_factor = 20; | |
154 | value[last] = '\0'; | |
155 | } | |
156 | if (value[last] == 'G' || value[last] == 'g') { | |
157 | shift_left_factor = 30; | |
158 | value[last] = '\0'; | |
159 | } | |
160 | ||
161 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
162 | } | |
163 | ||
9d565ffa CH |
164 | /* |
165 | * This function fills in xfs_mount_t fields based on mount args. | |
166 | * Note: the superblock has _not_ yet been read in. | |
167 | * | |
168 | * Note that this function leaks the various device name allocations on | |
169 | * failure. The caller takes care of them. | |
170 | */ | |
a67d7c5f DC |
171 | STATIC int |
172 | xfs_parseargs( | |
173 | struct xfs_mount *mp, | |
288699fe | 174 | char *options) |
a67d7c5f | 175 | { |
9d565ffa | 176 | struct super_block *sb = mp->m_super; |
a67d7c5f | 177 | char *this_char, *value, *eov; |
9d565ffa CH |
178 | int dsunit = 0; |
179 | int dswidth = 0; | |
180 | int iosize = 0; | |
a5687787 | 181 | __uint8_t iosizelog = 0; |
9d565ffa | 182 | |
4f10700a DC |
183 | /* |
184 | * set up the mount name first so all the errors will refer to the | |
185 | * correct device. | |
186 | */ | |
187 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
188 | if (!mp->m_fsname) | |
189 | return ENOMEM; | |
190 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
191 | ||
9d565ffa CH |
192 | /* |
193 | * Copy binary VFS mount flags we are interested in. | |
194 | */ | |
195 | if (sb->s_flags & MS_RDONLY) | |
196 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
197 | if (sb->s_flags & MS_DIRSYNC) | |
198 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
199 | if (sb->s_flags & MS_SYNCHRONOUS) | |
200 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
201 | ||
202 | /* | |
203 | * Set some default flags that could be cleared by the mount option | |
204 | * parsing. | |
205 | */ | |
206 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
207 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
08bf5404 | 208 | #if !XFS_BIG_INUMS |
9d565ffa | 209 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
08bf5404 | 210 | #endif |
a67d7c5f | 211 | |
9d565ffa CH |
212 | /* |
213 | * These can be overridden by the mount option parsing. | |
214 | */ | |
215 | mp->m_logbufs = -1; | |
216 | mp->m_logbsize = -1; | |
a67d7c5f DC |
217 | |
218 | if (!options) | |
219 | goto done; | |
220 | ||
a67d7c5f DC |
221 | while ((this_char = strsep(&options, ",")) != NULL) { |
222 | if (!*this_char) | |
223 | continue; | |
224 | if ((value = strchr(this_char, '=')) != NULL) | |
225 | *value++ = 0; | |
226 | ||
227 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
228 | if (!value || !*value) { | |
4f10700a | 229 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
230 | this_char); |
231 | return EINVAL; | |
232 | } | |
9d565ffa | 233 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
234 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
235 | if (!value || !*value) { | |
4f10700a | 236 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
237 | this_char); |
238 | return EINVAL; | |
239 | } | |
9d565ffa | 240 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
241 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
242 | if (!value || !*value) { | |
4f10700a | 243 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
244 | this_char); |
245 | return EINVAL; | |
246 | } | |
9d565ffa CH |
247 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
248 | if (!mp->m_logname) | |
249 | return ENOMEM; | |
a67d7c5f | 250 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 251 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe CH |
252 | this_char); |
253 | return EINVAL; | |
a67d7c5f DC |
254 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
255 | if (!value || !*value) { | |
4f10700a | 256 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
257 | this_char); |
258 | return EINVAL; | |
259 | } | |
9d565ffa CH |
260 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
261 | if (!mp->m_rtname) | |
262 | return ENOMEM; | |
a67d7c5f DC |
263 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
264 | if (!value || !*value) { | |
4f10700a | 265 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
266 | this_char); |
267 | return EINVAL; | |
268 | } | |
269 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 270 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
271 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
272 | if (!value || !*value) { | |
4f10700a | 273 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
274 | this_char); |
275 | return EINVAL; | |
276 | } | |
277 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 278 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
279 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
280 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
281 | mp->m_flags |= XFS_MOUNT_GRPID; | |
282 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
283 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
284 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
285 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 286 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 287 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 288 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 289 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 290 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 291 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 292 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
293 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
294 | if (!value || !*value) { | |
4f10700a | 295 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
296 | this_char); |
297 | return EINVAL; | |
298 | } | |
299 | dsunit = simple_strtoul(value, &eov, 10); | |
300 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
301 | if (!value || !*value) { | |
4f10700a | 302 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
303 | this_char); |
304 | return EINVAL; | |
305 | } | |
306 | dswidth = simple_strtoul(value, &eov, 10); | |
08bf5404 CM |
307 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
308 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 309 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 310 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 311 | #if !XFS_BIG_INUMS |
4f10700a | 312 | xfs_warn(mp, "%s option not allowed on this system", |
a67d7c5f DC |
313 | this_char); |
314 | return EINVAL; | |
315 | #endif | |
316 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 317 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 318 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 319 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 320 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 321 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 322 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 323 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 324 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 325 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 326 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 327 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 328 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 329 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 331 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 332 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
333 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
334 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 335 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 336 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 337 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
338 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
339 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
340 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
341 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
342 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
343 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
344 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
345 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
346 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
347 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
348 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
349 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
350 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
351 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
352 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
353 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 354 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
355 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
356 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
357 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
358 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
359 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
360 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 361 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
362 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
363 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 | 364 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
365 | xfs_warn(mp, |
366 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 367 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 368 | xfs_warn(mp, |
93b8a585 | 369 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
370 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
371 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
372 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
373 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 374 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
375 | xfs_warn(mp, |
376 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 377 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
378 | xfs_warn(mp, |
379 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 380 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
381 | xfs_warn(mp, |
382 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 383 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
384 | xfs_warn(mp, |
385 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 386 | } else { |
4f10700a | 387 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
a67d7c5f DC |
388 | return EINVAL; |
389 | } | |
390 | } | |
391 | ||
9d565ffa CH |
392 | /* |
393 | * no recovery flag requires a read-only mount | |
394 | */ | |
395 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
396 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 397 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
9d565ffa | 398 | return EINVAL; |
a67d7c5f DC |
399 | } |
400 | ||
9d565ffa | 401 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
402 | xfs_warn(mp, |
403 | "sunit and swidth options incompatible with the noalign option"); | |
a67d7c5f DC |
404 | return EINVAL; |
405 | } | |
406 | ||
7d095257 CH |
407 | #ifndef CONFIG_XFS_QUOTA |
408 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 409 | xfs_warn(mp, "quota support not available in this kernel."); |
7d095257 CH |
410 | return EINVAL; |
411 | } | |
412 | #endif | |
413 | ||
9d565ffa CH |
414 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
415 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
4f10700a | 416 | xfs_warn(mp, "cannot mount with both project and group quota"); |
a67d7c5f DC |
417 | return EINVAL; |
418 | } | |
419 | ||
a67d7c5f | 420 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 421 | xfs_warn(mp, "sunit and swidth must be specified together"); |
a67d7c5f DC |
422 | return EINVAL; |
423 | } | |
424 | ||
425 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
426 | xfs_warn(mp, |
427 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f DC |
428 | dswidth, dsunit); |
429 | return EINVAL; | |
430 | } | |
431 | ||
9d565ffa CH |
432 | done: |
433 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
434 | /* | |
435 | * At this point the superblock has not been read | |
436 | * in, therefore we do not know the block size. | |
437 | * Before the mount call ends we will convert | |
438 | * these to FSBs. | |
439 | */ | |
a67d7c5f | 440 | if (dsunit) { |
9d565ffa CH |
441 | mp->m_dalign = dsunit; |
442 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 443 | } |
9d565ffa CH |
444 | |
445 | if (dswidth) | |
446 | mp->m_swidth = dswidth; | |
447 | } | |
448 | ||
449 | if (mp->m_logbufs != -1 && | |
450 | mp->m_logbufs != 0 && | |
451 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
452 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 453 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa CH |
454 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
455 | return XFS_ERROR(EINVAL); | |
456 | } | |
457 | if (mp->m_logbsize != -1 && | |
458 | mp->m_logbsize != 0 && | |
459 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
460 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
461 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
462 | xfs_warn(mp, |
463 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa CH |
464 | mp->m_logbsize); |
465 | return XFS_ERROR(EINVAL); | |
466 | } | |
467 | ||
9d565ffa CH |
468 | if (iosizelog) { |
469 | if (iosizelog > XFS_MAX_IO_LOG || | |
470 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 471 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
472 | iosizelog, XFS_MIN_IO_LOG, |
473 | XFS_MAX_IO_LOG); | |
474 | return XFS_ERROR(EINVAL); | |
475 | } | |
476 | ||
477 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
478 | mp->m_readio_log = iosizelog; | |
479 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
480 | } |
481 | ||
a67d7c5f DC |
482 | return 0; |
483 | } | |
484 | ||
485 | struct proc_xfs_info { | |
486 | int flag; | |
487 | char *str; | |
488 | }; | |
489 | ||
490 | STATIC int | |
491 | xfs_showargs( | |
492 | struct xfs_mount *mp, | |
493 | struct seq_file *m) | |
494 | { | |
495 | static struct proc_xfs_info xfs_info_set[] = { | |
496 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 497 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 498 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
499 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
500 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
501 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
502 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
503 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
504 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 505 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 506 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 507 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
a67d7c5f DC |
508 | { 0, NULL } |
509 | }; | |
510 | static struct proc_xfs_info xfs_info_unset[] = { | |
511 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
512 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
513 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
514 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
515 | { 0, NULL } | |
516 | }; | |
517 | struct proc_xfs_info *xfs_infop; | |
518 | ||
519 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
520 | if (mp->m_flags & xfs_infop->flag) | |
521 | seq_puts(m, xfs_infop->str); | |
522 | } | |
523 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
524 | if (!(mp->m_flags & xfs_infop->flag)) | |
525 | seq_puts(m, xfs_infop->str); | |
526 | } | |
527 | ||
528 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
529 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
530 | (int)(1 << mp->m_writeio_log) >> 10); | |
531 | ||
532 | if (mp->m_logbufs > 0) | |
533 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
534 | if (mp->m_logbsize > 0) | |
535 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
536 | ||
537 | if (mp->m_logname) | |
538 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
539 | if (mp->m_rtname) | |
540 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
541 | ||
542 | if (mp->m_dalign > 0) | |
543 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
544 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
545 | if (mp->m_swidth > 0) | |
546 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
547 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
548 | ||
549 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
550 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
551 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
552 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
553 | ||
988abe40 AE |
554 | /* Either project or group quotas can be active, not both */ |
555 | ||
556 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
557 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
558 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
559 | else | |
560 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
561 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
562 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
563 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
564 | else | |
565 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
566 | } | |
a67d7c5f DC |
567 | |
568 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
569 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
570 | ||
571 | return 0; | |
572 | } | |
1da177e4 LT |
573 | __uint64_t |
574 | xfs_max_file_offset( | |
575 | unsigned int blockshift) | |
576 | { | |
577 | unsigned int pagefactor = 1; | |
578 | unsigned int bitshift = BITS_PER_LONG - 1; | |
579 | ||
580 | /* Figure out maximum filesize, on Linux this can depend on | |
581 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 582 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
583 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
584 | * So, for page sized blocks (4K on 32 bit platforms), | |
585 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
586 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
587 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
588 | * Note1: get_block_t takes a long (implicit cast from above) | |
589 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
590 | * can optionally convert the [unsigned] long from above into | |
591 | * an [unsigned] long long. | |
592 | */ | |
593 | ||
594 | #if BITS_PER_LONG == 32 | |
90c699a9 | 595 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
596 | ASSERT(sizeof(sector_t) == 8); |
597 | pagefactor = PAGE_CACHE_SIZE; | |
598 | bitshift = BITS_PER_LONG; | |
599 | # else | |
600 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
601 | # endif | |
602 | #endif | |
603 | ||
604 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
605 | } | |
606 | ||
2d2194f6 CM |
607 | xfs_agnumber_t |
608 | xfs_set_inode32(struct xfs_mount *mp) | |
609 | { | |
610 | xfs_agnumber_t index = 0; | |
4056c1d0 | 611 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
612 | xfs_sb_t *sbp = &mp->m_sb; |
613 | xfs_agnumber_t max_metadata; | |
614 | xfs_agino_t agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks -1, 0); | |
615 | xfs_ino_t ino = XFS_AGINO_TO_INO(mp, sbp->sb_agcount -1, agino); | |
616 | xfs_perag_t *pag; | |
617 | ||
618 | /* Calculate how much should be reserved for inodes to meet | |
619 | * the max inode percentage. | |
620 | */ | |
621 | if (mp->m_maxicount) { | |
622 | __uint64_t icount; | |
623 | ||
624 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
625 | do_div(icount, 100); | |
626 | icount += sbp->sb_agblocks - 1; | |
627 | do_div(icount, sbp->sb_agblocks); | |
628 | max_metadata = icount; | |
629 | } else { | |
630 | max_metadata = sbp->sb_agcount; | |
631 | } | |
632 | ||
633 | for (index = 0; index < sbp->sb_agcount; index++) { | |
634 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
4056c1d0 | 635 | |
2d2194f6 | 636 | if (ino > XFS_MAXINUMBER_32) { |
4056c1d0 CM |
637 | pag = xfs_perag_get(mp, index); |
638 | pag->pagi_inodeok = 0; | |
639 | pag->pagf_metadata = 0; | |
640 | xfs_perag_put(pag); | |
641 | continue; | |
2d2194f6 CM |
642 | } |
643 | ||
644 | pag = xfs_perag_get(mp, index); | |
645 | pag->pagi_inodeok = 1; | |
4056c1d0 | 646 | maxagi++; |
2d2194f6 CM |
647 | if (index < max_metadata) |
648 | pag->pagf_metadata = 1; | |
649 | xfs_perag_put(pag); | |
650 | } | |
4056c1d0 CM |
651 | mp->m_flags |= (XFS_MOUNT_32BITINODES | |
652 | XFS_MOUNT_SMALL_INUMS); | |
653 | ||
654 | return maxagi; | |
2d2194f6 CM |
655 | } |
656 | ||
657 | xfs_agnumber_t | |
658 | xfs_set_inode64(struct xfs_mount *mp) | |
659 | { | |
660 | xfs_agnumber_t index = 0; | |
661 | ||
662 | for (index = 0; index < mp->m_sb.sb_agcount; index++) { | |
663 | struct xfs_perag *pag; | |
664 | ||
665 | pag = xfs_perag_get(mp, index); | |
666 | pag->pagi_inodeok = 1; | |
667 | pag->pagf_metadata = 0; | |
668 | xfs_perag_put(pag); | |
669 | } | |
670 | ||
671 | /* There is no need for lock protection on m_flags, | |
672 | * the rw_semaphore of the VFS superblock is locked | |
673 | * during mount/umount/remount operations, so this is | |
674 | * enough to avoid concurency on the m_flags field | |
675 | */ | |
676 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
677 | XFS_MOUNT_SMALL_INUMS); | |
678 | return index; | |
679 | } | |
680 | ||
3180e66d | 681 | STATIC int |
1da177e4 LT |
682 | xfs_blkdev_get( |
683 | xfs_mount_t *mp, | |
684 | const char *name, | |
685 | struct block_device **bdevp) | |
686 | { | |
687 | int error = 0; | |
688 | ||
d4d77629 TH |
689 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
690 | mp); | |
1da177e4 LT |
691 | if (IS_ERR(*bdevp)) { |
692 | error = PTR_ERR(*bdevp); | |
4f10700a | 693 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
694 | } |
695 | ||
696 | return -error; | |
697 | } | |
698 | ||
3180e66d | 699 | STATIC void |
1da177e4 LT |
700 | xfs_blkdev_put( |
701 | struct block_device *bdev) | |
702 | { | |
703 | if (bdev) | |
e525fd89 | 704 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
705 | } |
706 | ||
f538d4da CH |
707 | void |
708 | xfs_blkdev_issue_flush( | |
709 | xfs_buftarg_t *buftarg) | |
710 | { | |
7582df51 | 711 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 712 | } |
1da177e4 | 713 | |
19f354d4 CH |
714 | STATIC void |
715 | xfs_close_devices( | |
716 | struct xfs_mount *mp) | |
717 | { | |
718 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 719 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 720 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 721 | xfs_blkdev_put(logdev); |
19f354d4 CH |
722 | } |
723 | if (mp->m_rtdev_targp) { | |
c032bfcf | 724 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 725 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 726 | xfs_blkdev_put(rtdev); |
19f354d4 | 727 | } |
b7963133 | 728 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
729 | } |
730 | ||
731 | /* | |
732 | * The file system configurations are: | |
733 | * (1) device (partition) with data and internal log | |
734 | * (2) logical volume with data and log subvolumes. | |
735 | * (3) logical volume with data, log, and realtime subvolumes. | |
736 | * | |
737 | * We only have to handle opening the log and realtime volumes here if | |
738 | * they are present. The data subvolume has already been opened by | |
739 | * get_sb_bdev() and is stored in sb->s_bdev. | |
740 | */ | |
741 | STATIC int | |
742 | xfs_open_devices( | |
9d565ffa | 743 | struct xfs_mount *mp) |
19f354d4 CH |
744 | { |
745 | struct block_device *ddev = mp->m_super->s_bdev; | |
746 | struct block_device *logdev = NULL, *rtdev = NULL; | |
747 | int error; | |
748 | ||
749 | /* | |
750 | * Open real time and log devices - order is important. | |
751 | */ | |
9d565ffa CH |
752 | if (mp->m_logname) { |
753 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
754 | if (error) |
755 | goto out; | |
756 | } | |
757 | ||
9d565ffa CH |
758 | if (mp->m_rtname) { |
759 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
760 | if (error) |
761 | goto out_close_logdev; | |
762 | ||
763 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
764 | xfs_warn(mp, |
765 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
19f354d4 CH |
766 | error = EINVAL; |
767 | goto out_close_rtdev; | |
768 | } | |
769 | } | |
770 | ||
771 | /* | |
772 | * Setup xfs_mount buffer target pointers | |
773 | */ | |
774 | error = ENOMEM; | |
ebad861b | 775 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
776 | if (!mp->m_ddev_targp) |
777 | goto out_close_rtdev; | |
778 | ||
779 | if (rtdev) { | |
ebad861b DC |
780 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
781 | mp->m_fsname); | |
19f354d4 CH |
782 | if (!mp->m_rtdev_targp) |
783 | goto out_free_ddev_targ; | |
784 | } | |
785 | ||
786 | if (logdev && logdev != ddev) { | |
ebad861b DC |
787 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
788 | mp->m_fsname); | |
19f354d4 CH |
789 | if (!mp->m_logdev_targp) |
790 | goto out_free_rtdev_targ; | |
791 | } else { | |
792 | mp->m_logdev_targp = mp->m_ddev_targp; | |
793 | } | |
794 | ||
795 | return 0; | |
796 | ||
797 | out_free_rtdev_targ: | |
798 | if (mp->m_rtdev_targp) | |
b7963133 | 799 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 800 | out_free_ddev_targ: |
b7963133 | 801 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
802 | out_close_rtdev: |
803 | if (rtdev) | |
804 | xfs_blkdev_put(rtdev); | |
805 | out_close_logdev: | |
806 | if (logdev && logdev != ddev) | |
807 | xfs_blkdev_put(logdev); | |
808 | out: | |
809 | return error; | |
810 | } | |
811 | ||
e34b562c CH |
812 | /* |
813 | * Setup xfs_mount buffer target pointers based on superblock | |
814 | */ | |
815 | STATIC int | |
816 | xfs_setup_devices( | |
817 | struct xfs_mount *mp) | |
818 | { | |
819 | int error; | |
19f354d4 | 820 | |
e34b562c CH |
821 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
822 | mp->m_sb.sb_sectsize); | |
823 | if (error) | |
824 | return error; | |
825 | ||
826 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
827 | unsigned int log_sector_size = BBSIZE; | |
828 | ||
829 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
830 | log_sector_size = mp->m_sb.sb_logsectsize; | |
831 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
832 | mp->m_sb.sb_blocksize, | |
833 | log_sector_size); | |
834 | if (error) | |
835 | return error; | |
836 | } | |
837 | if (mp->m_rtdev_targp) { | |
838 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
839 | mp->m_sb.sb_blocksize, | |
840 | mp->m_sb.sb_sectsize); | |
841 | if (error) | |
842 | return error; | |
843 | } | |
844 | ||
845 | return 0; | |
846 | } | |
19f354d4 | 847 | |
aa6bf01d CH |
848 | STATIC int |
849 | xfs_init_mount_workqueues( | |
850 | struct xfs_mount *mp) | |
851 | { | |
852 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", | |
853 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
854 | if (!mp->m_data_workqueue) | |
855 | goto out; | |
856 | ||
857 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
858 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
859 | if (!mp->m_unwritten_workqueue) | |
860 | goto out_destroy_data_iodone_queue; | |
861 | ||
4c2d542f DC |
862 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
863 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
864 | if (!mp->m_cil_workqueue) | |
865 | goto out_destroy_unwritten; | |
5889608d DC |
866 | |
867 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
868 | WQ_NON_REENTRANT, 0, mp->m_fsname); | |
869 | if (!mp->m_reclaim_workqueue) | |
870 | goto out_destroy_cil; | |
871 | ||
872 | mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", | |
873 | WQ_NON_REENTRANT, 0, mp->m_fsname); | |
874 | if (!mp->m_log_workqueue) | |
875 | goto out_destroy_reclaim; | |
876 | ||
aa6bf01d CH |
877 | return 0; |
878 | ||
5889608d DC |
879 | out_destroy_reclaim: |
880 | destroy_workqueue(mp->m_reclaim_workqueue); | |
881 | out_destroy_cil: | |
882 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
883 | out_destroy_unwritten: |
884 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
885 | out_destroy_data_iodone_queue: |
886 | destroy_workqueue(mp->m_data_workqueue); | |
887 | out: | |
888 | return -ENOMEM; | |
889 | } | |
890 | ||
891 | STATIC void | |
892 | xfs_destroy_mount_workqueues( | |
893 | struct xfs_mount *mp) | |
894 | { | |
5889608d DC |
895 | destroy_workqueue(mp->m_log_workqueue); |
896 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 897 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
898 | destroy_workqueue(mp->m_data_workqueue); |
899 | destroy_workqueue(mp->m_unwritten_workqueue); | |
900 | } | |
901 | ||
9aa05000 DC |
902 | /* |
903 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
904 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
905 | * for IO to complete so that we effectively throttle multiple callers to the | |
906 | * rate at which IO is completing. | |
907 | */ | |
908 | void | |
909 | xfs_flush_inodes( | |
910 | struct xfs_mount *mp) | |
911 | { | |
912 | struct super_block *sb = mp->m_super; | |
913 | ||
914 | if (down_read_trylock(&sb->s_umount)) { | |
915 | sync_inodes_sb(sb); | |
916 | up_read(&sb->s_umount); | |
917 | } | |
918 | } | |
919 | ||
bf904248 | 920 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 921 | STATIC struct inode * |
a50cd269 | 922 | xfs_fs_alloc_inode( |
1da177e4 LT |
923 | struct super_block *sb) |
924 | { | |
bf904248 | 925 | BUG(); |
493dca61 | 926 | return NULL; |
1da177e4 LT |
927 | } |
928 | ||
bf904248 | 929 | /* |
99fa8cb3 DC |
930 | * Now that the generic code is guaranteed not to be accessing |
931 | * the linux inode, we can reclaim the inode. | |
bf904248 | 932 | */ |
1da177e4 | 933 | STATIC void |
a50cd269 | 934 | xfs_fs_destroy_inode( |
848ce8f7 | 935 | struct inode *inode) |
1da177e4 | 936 | { |
848ce8f7 CH |
937 | struct xfs_inode *ip = XFS_I(inode); |
938 | ||
cca28fb8 | 939 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
940 | |
941 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
942 | |
943 | /* bad inode, get out here ASAP */ | |
944 | if (is_bad_inode(inode)) | |
945 | goto out_reclaim; | |
946 | ||
848ce8f7 CH |
947 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
948 | ||
949 | /* | |
950 | * We should never get here with one of the reclaim flags already set. | |
951 | */ | |
952 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
953 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
954 | ||
955 | /* | |
57817c68 DC |
956 | * We always use background reclaim here because even if the |
957 | * inode is clean, it still may be under IO and hence we have | |
958 | * to take the flush lock. The background reclaim path handles | |
959 | * this more efficiently than we can here, so simply let background | |
960 | * reclaim tear down all inodes. | |
848ce8f7 | 961 | */ |
848ce8f7 | 962 | out_reclaim: |
57817c68 | 963 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
964 | } |
965 | ||
07c8f675 DC |
966 | /* |
967 | * Slab object creation initialisation for the XFS inode. | |
968 | * This covers only the idempotent fields in the XFS inode; | |
969 | * all other fields need to be initialised on allocation | |
b595076a | 970 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
971 | * fields in the xfs inode that left in the initialise state |
972 | * when freeing the inode. | |
973 | */ | |
bf904248 DC |
974 | STATIC void |
975 | xfs_fs_inode_init_once( | |
07c8f675 DC |
976 | void *inode) |
977 | { | |
978 | struct xfs_inode *ip = inode; | |
979 | ||
980 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
981 | |
982 | /* vfs inode */ | |
983 | inode_init_once(VFS_I(ip)); | |
984 | ||
985 | /* xfs inode */ | |
07c8f675 DC |
986 | atomic_set(&ip->i_pincount, 0); |
987 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
988 | |
989 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
990 | "xfsino", ip->i_ino); | |
07c8f675 DC |
991 | } |
992 | ||
1da177e4 | 993 | STATIC void |
b57922d9 | 994 | xfs_fs_evict_inode( |
1da177e4 LT |
995 | struct inode *inode) |
996 | { | |
1543d79c | 997 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 998 | |
4f59af75 CH |
999 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
1000 | ||
b57922d9 | 1001 | trace_xfs_evict_inode(ip); |
cca28fb8 | 1002 | |
b57922d9 | 1003 | truncate_inode_pages(&inode->i_data, 0); |
dbd5768f | 1004 | clear_inode(inode); |
99fa8cb3 DC |
1005 | XFS_STATS_INC(vn_rele); |
1006 | XFS_STATS_INC(vn_remove); | |
1007 | XFS_STATS_DEC(vn_active); | |
1008 | ||
1009 | xfs_inactive(ip); | |
56d433e4 | 1010 | } |
1da177e4 | 1011 | |
5132ba8f DC |
1012 | /* |
1013 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
1014 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
1015 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
1016 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
1017 | * we drop the final reference on. | |
1018 | */ | |
1019 | STATIC int | |
1020 | xfs_fs_drop_inode( | |
1021 | struct inode *inode) | |
1022 | { | |
1023 | struct xfs_inode *ip = XFS_I(inode); | |
1024 | ||
1025 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1026 | } | |
1027 | ||
a738159d CH |
1028 | STATIC void |
1029 | xfs_free_fsname( | |
1030 | struct xfs_mount *mp) | |
1031 | { | |
1032 | kfree(mp->m_fsname); | |
1033 | kfree(mp->m_rtname); | |
1034 | kfree(mp->m_logname); | |
1035 | } | |
1036 | ||
1da177e4 | 1037 | STATIC void |
a50cd269 | 1038 | xfs_fs_put_super( |
1da177e4 LT |
1039 | struct super_block *sb) |
1040 | { | |
745f6919 | 1041 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1042 | |
7e18530b DC |
1043 | xfs_filestream_unmount(mp); |
1044 | xfs_unmountfs(mp); | |
1045 | ||
6203300e | 1046 | xfs_freesb(mp); |
c962fb79 | 1047 | xfs_icsb_destroy_counters(mp); |
aa6bf01d | 1048 | xfs_destroy_mount_workqueues(mp); |
19f354d4 | 1049 | xfs_close_devices(mp); |
a738159d | 1050 | xfs_free_fsname(mp); |
c962fb79 | 1051 | kfree(mp); |
1da177e4 LT |
1052 | } |
1053 | ||
1da177e4 | 1054 | STATIC int |
69961a26 | 1055 | xfs_fs_sync_fs( |
1da177e4 LT |
1056 | struct super_block *sb, |
1057 | int wait) | |
1058 | { | |
745f6919 | 1059 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1060 | |
e893bffd | 1061 | /* |
34625c66 | 1062 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1063 | */ |
34625c66 | 1064 | if (!wait) |
69961a26 | 1065 | return 0; |
69961a26 | 1066 | |
34061f5c | 1067 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1068 | if (laptop_mode) { |
1da177e4 LT |
1069 | /* |
1070 | * The disk must be active because we're syncing. | |
f661f1e0 | 1071 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1072 | * active) instead of later (when it might not be). |
1073 | */ | |
f661f1e0 | 1074 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1075 | } |
1076 | ||
69961a26 | 1077 | return 0; |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | STATIC int | |
a50cd269 | 1081 | xfs_fs_statfs( |
726c3342 | 1082 | struct dentry *dentry, |
1da177e4 LT |
1083 | struct kstatfs *statp) |
1084 | { | |
4ca488eb CH |
1085 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1086 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1087 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1088 | __uint64_t fakeinos, id; |
1089 | xfs_extlen_t lsize; | |
2fe33661 | 1090 | __int64_t ffree; |
4ca488eb CH |
1091 | |
1092 | statp->f_type = XFS_SB_MAGIC; | |
1093 | statp->f_namelen = MAXNAMELEN - 1; | |
1094 | ||
1095 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1096 | statp->f_fsid.val[0] = (u32)id; | |
1097 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1098 | ||
d4d90b57 | 1099 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1100 | |
1101 | spin_lock(&mp->m_sb_lock); | |
1102 | statp->f_bsize = sbp->sb_blocksize; | |
1103 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1104 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1105 | statp->f_bfree = statp->f_bavail = | |
1106 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1107 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1108 | statp->f_files = |
1109 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1110 | if (mp->m_maxicount) | |
a19d9f88 CH |
1111 | statp->f_files = min_t(typeof(statp->f_files), |
1112 | statp->f_files, | |
1113 | mp->m_maxicount); | |
2fe33661 SB |
1114 | |
1115 | /* make sure statp->f_ffree does not underflow */ | |
1116 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1117 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1118 | ||
4ca488eb CH |
1119 | spin_unlock(&mp->m_sb_lock); |
1120 | ||
da5bf95e | 1121 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
7d095257 CH |
1122 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == |
1123 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1124 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1125 | return 0; |
1da177e4 LT |
1126 | } |
1127 | ||
d5db0f97 ES |
1128 | STATIC void |
1129 | xfs_save_resvblks(struct xfs_mount *mp) | |
1130 | { | |
1131 | __uint64_t resblks = 0; | |
1132 | ||
1133 | mp->m_resblks_save = mp->m_resblks; | |
1134 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1135 | } | |
1136 | ||
1137 | STATIC void | |
1138 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1139 | { | |
1140 | __uint64_t resblks; | |
1141 | ||
1142 | if (mp->m_resblks_save) { | |
1143 | resblks = mp->m_resblks_save; | |
1144 | mp->m_resblks_save = 0; | |
1145 | } else | |
1146 | resblks = xfs_default_resblks(mp); | |
1147 | ||
1148 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1149 | } | |
1150 | ||
c7eea6f7 DC |
1151 | /* |
1152 | * Trigger writeback of all the dirty metadata in the file system. | |
1153 | * | |
1154 | * This ensures that the metadata is written to their location on disk rather | |
1155 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1156 | * there is no log replay required to write the inodes to disk - this is the |
1157 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1158 | * |
c75921a7 DC |
1159 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1160 | * it is started again when appropriate. | |
c7eea6f7 DC |
1161 | */ |
1162 | void | |
1163 | xfs_quiesce_attr( | |
1164 | struct xfs_mount *mp) | |
1165 | { | |
1166 | int error = 0; | |
1167 | ||
1168 | /* wait for all modifications to complete */ | |
1169 | while (atomic_read(&mp->m_active_trans) > 0) | |
1170 | delay(100); | |
1171 | ||
1172 | /* force the log to unpin objects from the now complete transactions */ | |
1173 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1174 | ||
1175 | /* reclaim inodes to do any IO before the freeze completes */ | |
1176 | xfs_reclaim_inodes(mp, 0); | |
1177 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1178 | ||
c7eea6f7 DC |
1179 | /* Push the superblock and write an unmount record */ |
1180 | error = xfs_log_sbcount(mp); | |
1181 | if (error) | |
1182 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1183 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1184 | /* |
c75921a7 DC |
1185 | * Just warn here till VFS can correctly support |
1186 | * read-only remount without racing. | |
c7eea6f7 | 1187 | */ |
c75921a7 | 1188 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1189 | |
c75921a7 | 1190 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1191 | } |
1192 | ||
1da177e4 | 1193 | STATIC int |
a50cd269 | 1194 | xfs_fs_remount( |
1da177e4 LT |
1195 | struct super_block *sb, |
1196 | int *flags, | |
1197 | char *options) | |
1198 | { | |
745f6919 | 1199 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1200 | substring_t args[MAX_OPT_ARGS]; |
1201 | char *p; | |
7884bc86 | 1202 | int error; |
1da177e4 | 1203 | |
62a877e3 CH |
1204 | while ((p = strsep(&options, ",")) != NULL) { |
1205 | int token; | |
bdd907ba | 1206 | |
62a877e3 CH |
1207 | if (!*p) |
1208 | continue; | |
48b62a1a | 1209 | |
62a877e3 CH |
1210 | token = match_token(p, tokens, args); |
1211 | switch (token) { | |
1212 | case Opt_barrier: | |
48b62a1a | 1213 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1214 | break; |
1215 | case Opt_nobarrier: | |
48b62a1a | 1216 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1217 | break; |
c3a58fec | 1218 | case Opt_inode64: |
4c083722 | 1219 | mp->m_maxagi = xfs_set_inode64(mp); |
c3a58fec | 1220 | break; |
2ea03929 CM |
1221 | case Opt_inode32: |
1222 | mp->m_maxagi = xfs_set_inode32(mp); | |
1223 | break; | |
62a877e3 | 1224 | default: |
6efdf281 CH |
1225 | /* |
1226 | * Logically we would return an error here to prevent | |
1227 | * users from believing they might have changed | |
1228 | * mount options using remount which can't be changed. | |
1229 | * | |
1230 | * But unfortunately mount(8) adds all options from | |
1231 | * mtab and fstab to the mount arguments in some cases | |
1232 | * so we can't blindly reject options, but have to | |
1233 | * check for each specified option if it actually | |
1234 | * differs from the currently set option and only | |
1235 | * reject it if that's the case. | |
1236 | * | |
1237 | * Until that is implemented we return success for | |
1238 | * every remount request, and silently ignore all | |
1239 | * options that we can't actually change. | |
1240 | */ | |
1241 | #if 0 | |
4f10700a DC |
1242 | xfs_info(mp, |
1243 | "mount option \"%s\" not supported for remount\n", p); | |
62a877e3 | 1244 | return -EINVAL; |
6efdf281 | 1245 | #else |
6c5e51da | 1246 | break; |
6efdf281 | 1247 | #endif |
48b62a1a | 1248 | } |
62a877e3 CH |
1249 | } |
1250 | ||
7884bc86 | 1251 | /* ro -> rw */ |
62a877e3 CH |
1252 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1253 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1254 | |
1255 | /* | |
1256 | * If this is the first remount to writeable state we | |
1257 | * might have some superblock changes to update. | |
1258 | */ | |
1259 | if (mp->m_update_flags) { | |
1260 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1261 | if (error) { | |
4f10700a | 1262 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1263 | return error; |
1264 | } | |
1265 | mp->m_update_flags = 0; | |
1266 | } | |
cbe132a8 DC |
1267 | |
1268 | /* | |
1269 | * Fill out the reserve pool if it is empty. Use the stashed | |
1270 | * value if it is non-zero, otherwise go with the default. | |
1271 | */ | |
d5db0f97 | 1272 | xfs_restore_resvblks(mp); |
f661f1e0 | 1273 | xfs_log_work_queue(mp); |
62a877e3 CH |
1274 | } |
1275 | ||
1276 | /* rw -> ro */ | |
1277 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1278 | /* |
34061f5c DC |
1279 | * Before we sync the metadata, we need to free up the reserve |
1280 | * block pool so that the used block count in the superblock on | |
1281 | * disk is correct at the end of the remount. Stash the current | |
1282 | * reserve pool size so that if we get remounted rw, we can | |
1283 | * return it to the same size. | |
cbe132a8 | 1284 | */ |
d5db0f97 | 1285 | xfs_save_resvblks(mp); |
76bf105c | 1286 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1287 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1288 | } | |
1289 | ||
62a877e3 | 1290 | return 0; |
1da177e4 LT |
1291 | } |
1292 | ||
9909c4aa CH |
1293 | /* |
1294 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1295 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1296 | * record to dirty the log in case of a crash while frozen. |
1297 | */ | |
c4be0c1d TS |
1298 | STATIC int |
1299 | xfs_fs_freeze( | |
1da177e4 LT |
1300 | struct super_block *sb) |
1301 | { | |
9909c4aa CH |
1302 | struct xfs_mount *mp = XFS_M(sb); |
1303 | ||
d5db0f97 | 1304 | xfs_save_resvblks(mp); |
76bf105c | 1305 | xfs_quiesce_attr(mp); |
c58efdb4 | 1306 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1307 | } |
1308 | ||
d5db0f97 ES |
1309 | STATIC int |
1310 | xfs_fs_unfreeze( | |
1311 | struct super_block *sb) | |
1312 | { | |
1313 | struct xfs_mount *mp = XFS_M(sb); | |
1314 | ||
1315 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1316 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1317 | return 0; |
1318 | } | |
1319 | ||
1da177e4 | 1320 | STATIC int |
a50cd269 | 1321 | xfs_fs_show_options( |
1da177e4 | 1322 | struct seq_file *m, |
34c80b1d | 1323 | struct dentry *root) |
1da177e4 | 1324 | { |
34c80b1d | 1325 | return -xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1326 | } |
1327 | ||
f8f15e42 CH |
1328 | /* |
1329 | * This function fills in xfs_mount_t fields based on mount args. | |
1330 | * Note: the superblock _has_ now been read in. | |
1331 | */ | |
1332 | STATIC int | |
1333 | xfs_finish_flags( | |
f8f15e42 CH |
1334 | struct xfs_mount *mp) |
1335 | { | |
1336 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1337 | ||
025dfdaf | 1338 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1339 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1340 | if (mp->m_logbsize <= 0 && |
1341 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1342 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1343 | } else if (mp->m_logbsize > 0 && |
1344 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1345 | xfs_warn(mp, |
1346 | "logbuf size must be greater than or equal to log stripe size"); | |
f8f15e42 CH |
1347 | return XFS_ERROR(EINVAL); |
1348 | } | |
1349 | } else { | |
1350 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1351 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1352 | xfs_warn(mp, |
1353 | "logbuf size for version 1 logs must be 16K or 32K"); | |
f8f15e42 CH |
1354 | return XFS_ERROR(EINVAL); |
1355 | } | |
1356 | } | |
1357 | ||
1358 | /* | |
1359 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1360 | * told by noattr2 to turn it off | |
1361 | */ | |
1362 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1363 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1364 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1365 | ||
1366 | /* | |
1367 | * prohibit r/w mounts of read-only filesystems | |
1368 | */ | |
1369 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1370 | xfs_warn(mp, |
1371 | "cannot mount a read-only filesystem as read-write"); | |
f8f15e42 CH |
1372 | return XFS_ERROR(EROFS); |
1373 | } | |
1374 | ||
f8f15e42 CH |
1375 | return 0; |
1376 | } | |
1377 | ||
1da177e4 | 1378 | STATIC int |
a50cd269 | 1379 | xfs_fs_fill_super( |
1da177e4 LT |
1380 | struct super_block *sb, |
1381 | void *data, | |
1382 | int silent) | |
1383 | { | |
f3dcc13f | 1384 | struct inode *root; |
745f6919 | 1385 | struct xfs_mount *mp = NULL; |
c962fb79 | 1386 | int flags = 0, error = ENOMEM; |
bdd907ba | 1387 | |
c962fb79 CH |
1388 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1389 | if (!mp) | |
9d565ffa | 1390 | goto out; |
1da177e4 | 1391 | |
c962fb79 | 1392 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1393 | mutex_init(&mp->m_growlock); |
1394 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1395 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
74394496 | 1396 | |
b267ce99 CH |
1397 | mp->m_super = sb; |
1398 | sb->s_fs_info = mp; | |
1da177e4 | 1399 | |
288699fe | 1400 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1401 | if (error) |
9d565ffa | 1402 | goto out_free_fsname; |
1da177e4 LT |
1403 | |
1404 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1405 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1406 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1407 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1408 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1409 | #endif |
a50cd269 | 1410 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1411 | |
9d565ffa | 1412 | if (silent) |
f8f15e42 CH |
1413 | flags |= XFS_MFSI_QUIET; |
1414 | ||
9d565ffa | 1415 | error = xfs_open_devices(mp); |
19f354d4 | 1416 | if (error) |
288699fe | 1417 | goto out_free_fsname; |
f8f15e42 | 1418 | |
aa6bf01d | 1419 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1420 | if (error) |
1421 | goto out_close_devices; | |
c962fb79 | 1422 | |
aa6bf01d CH |
1423 | error = xfs_icsb_init_counters(mp); |
1424 | if (error) | |
1425 | goto out_destroy_workqueues; | |
1426 | ||
f8f15e42 CH |
1427 | error = xfs_readsb(mp, flags); |
1428 | if (error) | |
9d565ffa CH |
1429 | goto out_destroy_counters; |
1430 | ||
1431 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1432 | if (error) |
effa2eda | 1433 | goto out_free_sb; |
f8f15e42 | 1434 | |
e34b562c | 1435 | error = xfs_setup_devices(mp); |
19f354d4 | 1436 | if (error) |
effa2eda | 1437 | goto out_free_sb; |
f8f15e42 | 1438 | |
f8f15e42 CH |
1439 | error = xfs_filestream_mount(mp); |
1440 | if (error) | |
effa2eda | 1441 | goto out_free_sb; |
f8f15e42 | 1442 | |
704b2907 DC |
1443 | /* |
1444 | * we must configure the block size in the superblock before we run the | |
1445 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1446 | */ |
4ca488eb CH |
1447 | sb->s_magic = XFS_SB_MAGIC; |
1448 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1449 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1450 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1451 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1452 | sb->s_time_gran = 1; |
1453 | set_posix_acl_flag(sb); | |
1454 | ||
8a00ebe4 | 1455 | error = xfs_mountfs(mp); |
2bcf6e97 | 1456 | if (error) |
7e18530b | 1457 | goto out_filestream_unmount; |
704b2907 | 1458 | |
01651646 | 1459 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1460 | if (!root) { |
cbc89dcf | 1461 | error = ENOENT; |
8a00ebe4 | 1462 | goto out_unmount; |
cbc89dcf | 1463 | } |
f3dcc13f CH |
1464 | if (is_bad_inode(root)) { |
1465 | error = EINVAL; | |
8a00ebe4 | 1466 | goto out_unmount; |
1da177e4 | 1467 | } |
48fde701 | 1468 | sb->s_root = d_make_root(root); |
f3dcc13f CH |
1469 | if (!sb->s_root) { |
1470 | error = ENOMEM; | |
8a00ebe4 | 1471 | goto out_unmount; |
1da177e4 | 1472 | } |
74394496 | 1473 | |
1da177e4 | 1474 | return 0; |
33c7a2bc | 1475 | |
7e18530b | 1476 | out_filestream_unmount: |
120226c1 | 1477 | xfs_filestream_unmount(mp); |
effa2eda CH |
1478 | out_free_sb: |
1479 | xfs_freesb(mp); | |
9d565ffa | 1480 | out_destroy_counters: |
c962fb79 | 1481 | xfs_icsb_destroy_counters(mp); |
aa6bf01d CH |
1482 | out_destroy_workqueues: |
1483 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1484 | out_close_devices: |
19f354d4 | 1485 | xfs_close_devices(mp); |
9d565ffa CH |
1486 | out_free_fsname: |
1487 | xfs_free_fsname(mp); | |
c962fb79 | 1488 | kfree(mp); |
9d565ffa | 1489 | out: |
c962fb79 | 1490 | return -error; |
f8f15e42 | 1491 | |
2bcf6e97 | 1492 | out_unmount: |
e48ad316 | 1493 | xfs_filestream_unmount(mp); |
19f354d4 | 1494 | xfs_unmountfs(mp); |
6203300e | 1495 | goto out_free_sb; |
1da177e4 LT |
1496 | } |
1497 | ||
152a0836 AV |
1498 | STATIC struct dentry * |
1499 | xfs_fs_mount( | |
1da177e4 LT |
1500 | struct file_system_type *fs_type, |
1501 | int flags, | |
1502 | const char *dev_name, | |
152a0836 | 1503 | void *data) |
1da177e4 | 1504 | { |
152a0836 | 1505 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1506 | } |
1507 | ||
8daaa831 DC |
1508 | static int |
1509 | xfs_fs_nr_cached_objects( | |
1510 | struct super_block *sb) | |
1511 | { | |
1512 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1513 | } | |
1514 | ||
1515 | static void | |
1516 | xfs_fs_free_cached_objects( | |
1517 | struct super_block *sb, | |
1518 | int nr_to_scan) | |
1519 | { | |
1520 | xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); | |
1521 | } | |
1522 | ||
b87221de | 1523 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1524 | .alloc_inode = xfs_fs_alloc_inode, |
1525 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1526 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1527 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1528 | .put_super = xfs_fs_put_super, |
69961a26 | 1529 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1530 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1531 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1532 | .statfs = xfs_fs_statfs, |
1533 | .remount_fs = xfs_fs_remount, | |
1534 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1535 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1536 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1537 | }; |
1538 | ||
5085b607 | 1539 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1540 | .owner = THIS_MODULE, |
1541 | .name = "xfs", | |
152a0836 | 1542 | .mount = xfs_fs_mount, |
1da177e4 LT |
1543 | .kill_sb = kill_block_super, |
1544 | .fs_flags = FS_REQUIRES_DEV, | |
1545 | }; | |
1546 | ||
9f8868ff CH |
1547 | STATIC int __init |
1548 | xfs_init_zones(void) | |
1549 | { | |
9f8868ff CH |
1550 | |
1551 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1552 | if (!xfs_ioend_zone) | |
bf904248 | 1553 | goto out; |
9f8868ff CH |
1554 | |
1555 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1556 | xfs_ioend_zone); | |
1557 | if (!xfs_ioend_pool) | |
1558 | goto out_destroy_ioend_zone; | |
1559 | ||
1560 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1561 | "xfs_log_ticket"); | |
1562 | if (!xfs_log_ticket_zone) | |
1563 | goto out_destroy_ioend_pool; | |
1564 | ||
1565 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1566 | "xfs_bmap_free_item"); | |
1567 | if (!xfs_bmap_free_item_zone) | |
1568 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1569 | |
9f8868ff CH |
1570 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1571 | "xfs_btree_cur"); | |
1572 | if (!xfs_btree_cur_zone) | |
1573 | goto out_destroy_bmap_free_item_zone; | |
1574 | ||
1575 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1576 | "xfs_da_state"); | |
1577 | if (!xfs_da_state_zone) | |
1578 | goto out_destroy_btree_cur_zone; | |
1579 | ||
9f8868ff CH |
1580 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1581 | if (!xfs_ifork_zone) | |
1d9025e5 | 1582 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1583 | |
1584 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1585 | if (!xfs_trans_zone) | |
1586 | goto out_destroy_ifork_zone; | |
1587 | ||
e98c414f CH |
1588 | xfs_log_item_desc_zone = |
1589 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1590 | "xfs_log_item_desc"); | |
1591 | if (!xfs_log_item_desc_zone) | |
1592 | goto out_destroy_trans_zone; | |
1593 | ||
9f8868ff CH |
1594 | /* |
1595 | * The size of the zone allocated buf log item is the maximum | |
1596 | * size possible under XFS. This wastes a little bit of memory, | |
1597 | * but it is much faster. | |
1598 | */ | |
77c1a08f DC |
1599 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1600 | "xfs_buf_item"); | |
9f8868ff | 1601 | if (!xfs_buf_item_zone) |
e98c414f | 1602 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1603 | |
1604 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1605 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1606 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1607 | if (!xfs_efd_zone) | |
1608 | goto out_destroy_buf_item_zone; | |
1609 | ||
1610 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1611 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1612 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1613 | if (!xfs_efi_zone) | |
1614 | goto out_destroy_efd_zone; | |
1615 | ||
1616 | xfs_inode_zone = | |
1617 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1618 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1619 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1620 | if (!xfs_inode_zone) |
1621 | goto out_destroy_efi_zone; | |
1622 | ||
1623 | xfs_ili_zone = | |
1624 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1625 | KM_ZONE_SPREAD, NULL); | |
1626 | if (!xfs_ili_zone) | |
1627 | goto out_destroy_inode_zone; | |
1628 | ||
9f8868ff CH |
1629 | return 0; |
1630 | ||
9f8868ff CH |
1631 | out_destroy_inode_zone: |
1632 | kmem_zone_destroy(xfs_inode_zone); | |
1633 | out_destroy_efi_zone: | |
1634 | kmem_zone_destroy(xfs_efi_zone); | |
1635 | out_destroy_efd_zone: | |
1636 | kmem_zone_destroy(xfs_efd_zone); | |
1637 | out_destroy_buf_item_zone: | |
1638 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1639 | out_destroy_log_item_desc_zone: |
1640 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1641 | out_destroy_trans_zone: |
1642 | kmem_zone_destroy(xfs_trans_zone); | |
1643 | out_destroy_ifork_zone: | |
1644 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1645 | out_destroy_da_state_zone: |
1646 | kmem_zone_destroy(xfs_da_state_zone); | |
1647 | out_destroy_btree_cur_zone: | |
1648 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1649 | out_destroy_bmap_free_item_zone: | |
1650 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1651 | out_destroy_log_ticket_zone: | |
1652 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1653 | out_destroy_ioend_pool: | |
1654 | mempool_destroy(xfs_ioend_pool); | |
1655 | out_destroy_ioend_zone: | |
1656 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1657 | out: |
1658 | return -ENOMEM; | |
1659 | } | |
1660 | ||
1661 | STATIC void | |
1662 | xfs_destroy_zones(void) | |
1663 | { | |
8c0a8537 KS |
1664 | /* |
1665 | * Make sure all delayed rcu free are flushed before we | |
1666 | * destroy caches. | |
1667 | */ | |
1668 | rcu_barrier(); | |
9f8868ff CH |
1669 | kmem_zone_destroy(xfs_ili_zone); |
1670 | kmem_zone_destroy(xfs_inode_zone); | |
1671 | kmem_zone_destroy(xfs_efi_zone); | |
1672 | kmem_zone_destroy(xfs_efd_zone); | |
1673 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1674 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1675 | kmem_zone_destroy(xfs_trans_zone); |
1676 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1677 | kmem_zone_destroy(xfs_da_state_zone); |
1678 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1679 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1680 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1681 | mempool_destroy(xfs_ioend_pool); | |
1682 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1683 | |
1684 | } | |
1da177e4 | 1685 | |
0bf6a5bd DC |
1686 | STATIC int __init |
1687 | xfs_init_workqueues(void) | |
1688 | { | |
c999a223 DC |
1689 | /* |
1690 | * The allocation workqueue can be used in memory reclaim situations | |
1691 | * (writepage path), and parallelism is only limited by the number of | |
1692 | * AGs in all the filesystems mounted. Hence use the default large | |
1693 | * max_active value for this workqueue. | |
1694 | */ | |
1695 | xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0); | |
1696 | if (!xfs_alloc_wq) | |
5889608d | 1697 | return -ENOMEM; |
c999a223 | 1698 | |
0bf6a5bd | 1699 | return 0; |
0bf6a5bd DC |
1700 | } |
1701 | ||
39411f81 | 1702 | STATIC void |
0bf6a5bd DC |
1703 | xfs_destroy_workqueues(void) |
1704 | { | |
c999a223 | 1705 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1706 | } |
1707 | ||
1da177e4 | 1708 | STATIC int __init |
9f8868ff | 1709 | init_xfs_fs(void) |
1da177e4 LT |
1710 | { |
1711 | int error; | |
1da177e4 | 1712 | |
65795910 CH |
1713 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1714 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1715 | |
9f8868ff | 1716 | xfs_dir_startup(); |
1da177e4 | 1717 | |
8758280f | 1718 | error = xfs_init_zones(); |
9f8868ff CH |
1719 | if (error) |
1720 | goto out; | |
1721 | ||
0bf6a5bd | 1722 | error = xfs_init_workqueues(); |
9f8868ff | 1723 | if (error) |
0b1b213f | 1724 | goto out_destroy_zones; |
9f8868ff | 1725 | |
0bf6a5bd DC |
1726 | error = xfs_mru_cache_init(); |
1727 | if (error) | |
1728 | goto out_destroy_wq; | |
1729 | ||
9f8868ff CH |
1730 | error = xfs_filestream_init(); |
1731 | if (error) | |
1732 | goto out_mru_cache_uninit; | |
1da177e4 | 1733 | |
ce8e922c | 1734 | error = xfs_buf_init(); |
9f8868ff CH |
1735 | if (error) |
1736 | goto out_filestream_uninit; | |
1737 | ||
1738 | error = xfs_init_procfs(); | |
1739 | if (error) | |
1740 | goto out_buf_terminate; | |
1741 | ||
1742 | error = xfs_sysctl_register(); | |
1743 | if (error) | |
1744 | goto out_cleanup_procfs; | |
1da177e4 | 1745 | |
a05931ce CH |
1746 | error = xfs_qm_init(); |
1747 | if (error) | |
1748 | goto out_sysctl_unregister; | |
1da177e4 LT |
1749 | |
1750 | error = register_filesystem(&xfs_fs_type); | |
1751 | if (error) | |
a05931ce | 1752 | goto out_qm_exit; |
1da177e4 LT |
1753 | return 0; |
1754 | ||
a05931ce CH |
1755 | out_qm_exit: |
1756 | xfs_qm_exit(); | |
9f8868ff CH |
1757 | out_sysctl_unregister: |
1758 | xfs_sysctl_unregister(); | |
1759 | out_cleanup_procfs: | |
1760 | xfs_cleanup_procfs(); | |
1761 | out_buf_terminate: | |
ce8e922c | 1762 | xfs_buf_terminate(); |
9f8868ff CH |
1763 | out_filestream_uninit: |
1764 | xfs_filestream_uninit(); | |
1765 | out_mru_cache_uninit: | |
1766 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1767 | out_destroy_wq: |
1768 | xfs_destroy_workqueues(); | |
9f8868ff | 1769 | out_destroy_zones: |
8758280f | 1770 | xfs_destroy_zones(); |
9f8868ff | 1771 | out: |
1da177e4 LT |
1772 | return error; |
1773 | } | |
1774 | ||
1775 | STATIC void __exit | |
9f8868ff | 1776 | exit_xfs_fs(void) |
1da177e4 | 1777 | { |
a05931ce | 1778 | xfs_qm_exit(); |
1da177e4 | 1779 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1780 | xfs_sysctl_unregister(); |
1781 | xfs_cleanup_procfs(); | |
ce8e922c | 1782 | xfs_buf_terminate(); |
9f8868ff CH |
1783 | xfs_filestream_uninit(); |
1784 | xfs_mru_cache_uninit(); | |
0bf6a5bd | 1785 | xfs_destroy_workqueues(); |
8758280f | 1786 | xfs_destroy_zones(); |
1da177e4 LT |
1787 | } |
1788 | ||
1789 | module_init(init_xfs_fs); | |
1790 | module_exit(exit_xfs_fs); | |
1791 | ||
1792 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1793 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1794 | MODULE_LICENSE("GPL"); |