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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" |
a844f451 | 20 | #include "xfs_bit.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 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
1da177e4 LT |
28 | #include "xfs_quota.h" |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
33 | #include "xfs_dinode.h" |
34 | #include "xfs_inode.h" | |
a844f451 | 35 | #include "xfs_btree.h" |
8c4ed633 | 36 | #include "xfs_btree_trace.h" |
a844f451 | 37 | #include "xfs_ialloc.h" |
1da177e4 | 38 | #include "xfs_bmap.h" |
1da177e4 LT |
39 | #include "xfs_rtalloc.h" |
40 | #include "xfs_error.h" | |
41 | #include "xfs_itable.h" | |
9909c4aa | 42 | #include "xfs_fsops.h" |
1da177e4 LT |
43 | #include "xfs_attr.h" |
44 | #include "xfs_buf_item.h" | |
45 | #include "xfs_utils.h" | |
739bfb2a | 46 | #include "xfs_vnodeops.h" |
1da177e4 | 47 | #include "xfs_version.h" |
a67d7c5f | 48 | #include "xfs_log_priv.h" |
249a8c11 | 49 | #include "xfs_trans_priv.h" |
48b62a1a | 50 | #include "xfs_filestream.h" |
9f8868ff | 51 | #include "xfs_da_btree.h" |
9f8868ff CH |
52 | #include "xfs_extfree_item.h" |
53 | #include "xfs_mru_cache.h" | |
54 | #include "xfs_inode_item.h" | |
fe4fa4b8 | 55 | #include "xfs_sync.h" |
0b1b213f | 56 | #include "xfs_trace.h" |
1da177e4 LT |
57 | |
58 | #include <linux/namei.h> | |
59 | #include <linux/init.h> | |
5a0e3ad6 | 60 | #include <linux/slab.h> |
1da177e4 | 61 | #include <linux/mount.h> |
0829c360 | 62 | #include <linux/mempool.h> |
1da177e4 | 63 | #include <linux/writeback.h> |
4df08c52 | 64 | #include <linux/kthread.h> |
7dfb7103 | 65 | #include <linux/freezer.h> |
62a877e3 | 66 | #include <linux/parser.h> |
1da177e4 | 67 | |
b87221de | 68 | static const struct super_operations xfs_super_operations; |
7989cb8e | 69 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 70 | mempool_t *xfs_ioend_pool; |
1da177e4 | 71 | |
a67d7c5f DC |
72 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
73 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
74 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
75 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
76 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
77 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
78 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
79 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
80 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
81 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
82 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
83 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
84 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
85 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
86 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
87 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
88 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
89 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
90 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
91 | * unwritten extent conversion */ | |
92 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
93 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ | |
94 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ | |
95 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
96 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
97 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
98 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
99 | * in stat(). */ | |
100 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
101 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
102 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
103 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
104 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
105 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
106 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
107 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
108 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
109 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
110 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
111 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
112 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
113 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
114 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
71e330b5 DC |
115 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed loging enabled */ |
116 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed loging disabled */ | |
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 { | |
125 | Opt_barrier, Opt_nobarrier, Opt_err | |
126 | }; | |
127 | ||
a447c093 | 128 | static const match_table_t tokens = { |
62a877e3 CH |
129 | {Opt_barrier, "barrier"}, |
130 | {Opt_nobarrier, "nobarrier"}, | |
131 | {Opt_err, NULL} | |
132 | }; | |
133 | ||
134 | ||
a67d7c5f DC |
135 | STATIC unsigned long |
136 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
137 | { | |
138 | int last, shift_left_factor = 0; | |
139 | char *value = s; | |
140 | ||
141 | last = strlen(value) - 1; | |
142 | if (value[last] == 'K' || value[last] == 'k') { | |
143 | shift_left_factor = 10; | |
144 | value[last] = '\0'; | |
145 | } | |
146 | if (value[last] == 'M' || value[last] == 'm') { | |
147 | shift_left_factor = 20; | |
148 | value[last] = '\0'; | |
149 | } | |
150 | if (value[last] == 'G' || value[last] == 'g') { | |
151 | shift_left_factor = 30; | |
152 | value[last] = '\0'; | |
153 | } | |
154 | ||
155 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
156 | } | |
157 | ||
9d565ffa CH |
158 | /* |
159 | * This function fills in xfs_mount_t fields based on mount args. | |
160 | * Note: the superblock has _not_ yet been read in. | |
161 | * | |
162 | * Note that this function leaks the various device name allocations on | |
163 | * failure. The caller takes care of them. | |
164 | */ | |
a67d7c5f DC |
165 | STATIC int |
166 | xfs_parseargs( | |
167 | struct xfs_mount *mp, | |
288699fe | 168 | char *options) |
a67d7c5f | 169 | { |
9d565ffa | 170 | struct super_block *sb = mp->m_super; |
a67d7c5f | 171 | char *this_char, *value, *eov; |
9d565ffa CH |
172 | int dsunit = 0; |
173 | int dswidth = 0; | |
174 | int iosize = 0; | |
a5687787 | 175 | __uint8_t iosizelog = 0; |
9d565ffa CH |
176 | |
177 | /* | |
178 | * Copy binary VFS mount flags we are interested in. | |
179 | */ | |
180 | if (sb->s_flags & MS_RDONLY) | |
181 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
182 | if (sb->s_flags & MS_DIRSYNC) | |
183 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
184 | if (sb->s_flags & MS_SYNCHRONOUS) | |
185 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
186 | ||
187 | /* | |
188 | * Set some default flags that could be cleared by the mount option | |
189 | * parsing. | |
190 | */ | |
191 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
192 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
193 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 194 | |
9d565ffa CH |
195 | /* |
196 | * These can be overridden by the mount option parsing. | |
197 | */ | |
198 | mp->m_logbufs = -1; | |
199 | mp->m_logbsize = -1; | |
a67d7c5f DC |
200 | |
201 | if (!options) | |
202 | goto done; | |
203 | ||
a67d7c5f DC |
204 | while ((this_char = strsep(&options, ",")) != NULL) { |
205 | if (!*this_char) | |
206 | continue; | |
207 | if ((value = strchr(this_char, '=')) != NULL) | |
208 | *value++ = 0; | |
209 | ||
210 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
211 | if (!value || !*value) { | |
212 | cmn_err(CE_WARN, | |
213 | "XFS: %s option requires an argument", | |
214 | this_char); | |
215 | return EINVAL; | |
216 | } | |
9d565ffa | 217 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
218 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
219 | if (!value || !*value) { | |
220 | cmn_err(CE_WARN, | |
221 | "XFS: %s option requires an argument", | |
222 | this_char); | |
223 | return EINVAL; | |
224 | } | |
9d565ffa | 225 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
226 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
227 | if (!value || !*value) { | |
228 | cmn_err(CE_WARN, | |
229 | "XFS: %s option requires an argument", | |
230 | this_char); | |
231 | return EINVAL; | |
232 | } | |
9d565ffa CH |
233 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
234 | if (!mp->m_logname) | |
235 | return ENOMEM; | |
a67d7c5f | 236 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
288699fe CH |
237 | cmn_err(CE_WARN, |
238 | "XFS: %s option not allowed on this system", | |
239 | this_char); | |
240 | return EINVAL; | |
a67d7c5f DC |
241 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
242 | if (!value || !*value) { | |
243 | cmn_err(CE_WARN, | |
244 | "XFS: %s option requires an argument", | |
245 | this_char); | |
246 | return EINVAL; | |
247 | } | |
9d565ffa CH |
248 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
249 | if (!mp->m_rtname) | |
250 | return ENOMEM; | |
a67d7c5f DC |
251 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
252 | if (!value || !*value) { | |
253 | cmn_err(CE_WARN, | |
254 | "XFS: %s option requires an argument", | |
255 | this_char); | |
256 | return EINVAL; | |
257 | } | |
258 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 259 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
260 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
261 | if (!value || !*value) { | |
262 | cmn_err(CE_WARN, | |
263 | "XFS: %s option requires an argument", | |
264 | this_char); | |
265 | return EINVAL; | |
266 | } | |
267 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 268 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
269 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
270 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
271 | mp->m_flags |= XFS_MOUNT_GRPID; | |
272 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
273 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
274 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
275 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 276 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 277 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { |
9d565ffa | 278 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; |
a67d7c5f | 279 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 280 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 281 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 282 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 283 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 284 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
285 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
286 | if (!value || !*value) { | |
287 | cmn_err(CE_WARN, | |
288 | "XFS: %s option requires an argument", | |
289 | this_char); | |
290 | return EINVAL; | |
291 | } | |
292 | dsunit = simple_strtoul(value, &eov, 10); | |
293 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
294 | if (!value || !*value) { | |
295 | cmn_err(CE_WARN, | |
296 | "XFS: %s option requires an argument", | |
297 | this_char); | |
298 | return EINVAL; | |
299 | } | |
300 | dswidth = simple_strtoul(value, &eov, 10); | |
301 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
9d565ffa | 302 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f DC |
303 | #if !XFS_BIG_INUMS |
304 | cmn_err(CE_WARN, | |
305 | "XFS: %s option not allowed on this system", | |
306 | this_char); | |
307 | return EINVAL; | |
308 | #endif | |
309 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 310 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 311 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 312 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 313 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 314 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 315 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 316 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 317 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 318 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 319 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 320 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 321 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 322 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 323 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 324 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 325 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
326 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
327 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 328 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 329 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
9d565ffa CH |
331 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
332 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | | |
469fc23d | 333 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
9d565ffa | 334 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
a67d7c5f DC |
335 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
336 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
337 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
338 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
339 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
340 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
341 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
342 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
343 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
344 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
345 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
346 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
347 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 348 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
349 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
350 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
351 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
352 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
353 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
354 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 355 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
356 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
357 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 DC |
358 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
359 | mp->m_flags |= XFS_MOUNT_DELAYLOG; | |
360 | cmn_err(CE_WARN, | |
361 | "Enabling EXPERIMENTAL delayed logging feature " | |
362 | "- use at your own risk.\n"); | |
363 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { | |
364 | mp->m_flags &= ~XFS_MOUNT_DELAYLOG; | |
a67d7c5f DC |
365 | } else if (!strcmp(this_char, "ihashsize")) { |
366 | cmn_err(CE_WARN, | |
367 | "XFS: ihashsize no longer used, option is deprecated."); | |
368 | } else if (!strcmp(this_char, "osyncisdsync")) { | |
369 | /* no-op, this is now the default */ | |
370 | cmn_err(CE_WARN, | |
371 | "XFS: osyncisdsync is now the default, option is deprecated."); | |
372 | } else if (!strcmp(this_char, "irixsgid")) { | |
373 | cmn_err(CE_WARN, | |
374 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
375 | } else { | |
376 | cmn_err(CE_WARN, | |
377 | "XFS: unknown mount option [%s].", this_char); | |
378 | return EINVAL; | |
379 | } | |
380 | } | |
381 | ||
9d565ffa CH |
382 | /* |
383 | * no recovery flag requires a read-only mount | |
384 | */ | |
385 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
386 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
387 | cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); | |
388 | return EINVAL; | |
a67d7c5f DC |
389 | } |
390 | ||
9d565ffa | 391 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
a67d7c5f DC |
392 | cmn_err(CE_WARN, |
393 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
394 | return EINVAL; | |
395 | } | |
396 | ||
7d095257 CH |
397 | #ifndef CONFIG_XFS_QUOTA |
398 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
399 | cmn_err(CE_WARN, | |
400 | "XFS: quota support not available in this kernel."); | |
401 | return EINVAL; | |
402 | } | |
403 | #endif | |
404 | ||
9d565ffa CH |
405 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
406 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
a67d7c5f DC |
407 | cmn_err(CE_WARN, |
408 | "XFS: cannot mount with both project and group quota"); | |
409 | return EINVAL; | |
410 | } | |
411 | ||
a67d7c5f DC |
412 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
413 | cmn_err(CE_WARN, | |
414 | "XFS: sunit and swidth must be specified together"); | |
415 | return EINVAL; | |
416 | } | |
417 | ||
418 | if (dsunit && (dswidth % dsunit != 0)) { | |
419 | cmn_err(CE_WARN, | |
420 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
421 | dswidth, dsunit); | |
422 | return EINVAL; | |
423 | } | |
424 | ||
9d565ffa CH |
425 | done: |
426 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
427 | /* | |
428 | * At this point the superblock has not been read | |
429 | * in, therefore we do not know the block size. | |
430 | * Before the mount call ends we will convert | |
431 | * these to FSBs. | |
432 | */ | |
a67d7c5f | 433 | if (dsunit) { |
9d565ffa CH |
434 | mp->m_dalign = dsunit; |
435 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 436 | } |
9d565ffa CH |
437 | |
438 | if (dswidth) | |
439 | mp->m_swidth = dswidth; | |
440 | } | |
441 | ||
442 | if (mp->m_logbufs != -1 && | |
443 | mp->m_logbufs != 0 && | |
444 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
445 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
446 | cmn_err(CE_WARN, | |
447 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
448 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
449 | return XFS_ERROR(EINVAL); | |
450 | } | |
451 | if (mp->m_logbsize != -1 && | |
452 | mp->m_logbsize != 0 && | |
453 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
454 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
455 | !is_power_of_2(mp->m_logbsize))) { | |
456 | cmn_err(CE_WARN, | |
457 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
458 | mp->m_logbsize); | |
459 | return XFS_ERROR(EINVAL); | |
460 | } | |
461 | ||
462 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
463 | if (!mp->m_fsname) | |
464 | return ENOMEM; | |
465 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
466 | ||
467 | if (iosizelog) { | |
468 | if (iosizelog > XFS_MAX_IO_LOG || | |
469 | iosizelog < XFS_MIN_IO_LOG) { | |
470 | cmn_err(CE_WARN, | |
471 | "XFS: invalid log iosize: %d [not %d-%d]", | |
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 }, | |
503 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, | |
504 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, | |
505 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 506 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
71e330b5 | 507 | { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, |
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). | |
582 | * __block_prepare_write does this in an [unsigned] long... | |
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 | ||
3180e66d | 607 | STATIC int |
1da177e4 LT |
608 | xfs_blkdev_get( |
609 | xfs_mount_t *mp, | |
610 | const char *name, | |
611 | struct block_device **bdevp) | |
612 | { | |
613 | int error = 0; | |
614 | ||
30c40d2c | 615 | *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); |
1da177e4 LT |
616 | if (IS_ERR(*bdevp)) { |
617 | error = PTR_ERR(*bdevp); | |
618 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
619 | } | |
620 | ||
621 | return -error; | |
622 | } | |
623 | ||
3180e66d | 624 | STATIC void |
1da177e4 LT |
625 | xfs_blkdev_put( |
626 | struct block_device *bdev) | |
627 | { | |
628 | if (bdev) | |
30c40d2c | 629 | close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); |
1da177e4 LT |
630 | } |
631 | ||
f538d4da CH |
632 | /* |
633 | * Try to write out the superblock using barriers. | |
634 | */ | |
635 | STATIC int | |
636 | xfs_barrier_test( | |
637 | xfs_mount_t *mp) | |
638 | { | |
639 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
640 | int error; | |
641 | ||
642 | XFS_BUF_UNDONE(sbp); | |
643 | XFS_BUF_UNREAD(sbp); | |
644 | XFS_BUF_UNDELAYWRITE(sbp); | |
645 | XFS_BUF_WRITE(sbp); | |
646 | XFS_BUF_UNASYNC(sbp); | |
647 | XFS_BUF_ORDERED(sbp); | |
648 | ||
649 | xfsbdstrat(mp, sbp); | |
650 | error = xfs_iowait(sbp); | |
651 | ||
652 | /* | |
653 | * Clear all the flags we set and possible error state in the | |
654 | * buffer. We only did the write to try out whether barriers | |
655 | * worked and shouldn't leave any traces in the superblock | |
656 | * buffer. | |
657 | */ | |
658 | XFS_BUF_DONE(sbp); | |
659 | XFS_BUF_ERROR(sbp, 0); | |
660 | XFS_BUF_UNORDERED(sbp); | |
661 | ||
662 | xfs_buf_relse(sbp); | |
663 | return error; | |
664 | } | |
665 | ||
d96f8f89 | 666 | STATIC void |
f538d4da CH |
667 | xfs_mountfs_check_barriers(xfs_mount_t *mp) |
668 | { | |
669 | int error; | |
670 | ||
671 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
672 | xfs_fs_cmn_err(CE_NOTE, mp, | |
673 | "Disabling barriers, not supported with external log device"); | |
674 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 675 | return; |
f538d4da CH |
676 | } |
677 | ||
b2ea401b NS |
678 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
679 | xfs_fs_cmn_err(CE_NOTE, mp, | |
680 | "Disabling barriers, underlying device is readonly"); | |
681 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
682 | return; | |
683 | } | |
684 | ||
f538d4da CH |
685 | error = xfs_barrier_test(mp); |
686 | if (error) { | |
687 | xfs_fs_cmn_err(CE_NOTE, mp, | |
688 | "Disabling barriers, trial barrier write failed"); | |
689 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 690 | return; |
f538d4da CH |
691 | } |
692 | } | |
693 | ||
694 | void | |
695 | xfs_blkdev_issue_flush( | |
696 | xfs_buftarg_t *buftarg) | |
697 | { | |
fbd9b09a DM |
698 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL, |
699 | BLKDEV_IFL_WAIT); | |
f538d4da | 700 | } |
1da177e4 | 701 | |
19f354d4 CH |
702 | STATIC void |
703 | xfs_close_devices( | |
704 | struct xfs_mount *mp) | |
705 | { | |
706 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 707 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 708 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 709 | xfs_blkdev_put(logdev); |
19f354d4 CH |
710 | } |
711 | if (mp->m_rtdev_targp) { | |
c032bfcf | 712 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 713 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 714 | xfs_blkdev_put(rtdev); |
19f354d4 | 715 | } |
b7963133 | 716 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
717 | } |
718 | ||
719 | /* | |
720 | * The file system configurations are: | |
721 | * (1) device (partition) with data and internal log | |
722 | * (2) logical volume with data and log subvolumes. | |
723 | * (3) logical volume with data, log, and realtime subvolumes. | |
724 | * | |
725 | * We only have to handle opening the log and realtime volumes here if | |
726 | * they are present. The data subvolume has already been opened by | |
727 | * get_sb_bdev() and is stored in sb->s_bdev. | |
728 | */ | |
729 | STATIC int | |
730 | xfs_open_devices( | |
9d565ffa | 731 | struct xfs_mount *mp) |
19f354d4 CH |
732 | { |
733 | struct block_device *ddev = mp->m_super->s_bdev; | |
734 | struct block_device *logdev = NULL, *rtdev = NULL; | |
735 | int error; | |
736 | ||
737 | /* | |
738 | * Open real time and log devices - order is important. | |
739 | */ | |
9d565ffa CH |
740 | if (mp->m_logname) { |
741 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
742 | if (error) |
743 | goto out; | |
744 | } | |
745 | ||
9d565ffa CH |
746 | if (mp->m_rtname) { |
747 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
748 | if (error) |
749 | goto out_close_logdev; | |
750 | ||
751 | if (rtdev == ddev || rtdev == logdev) { | |
752 | cmn_err(CE_WARN, | |
753 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
754 | error = EINVAL; | |
755 | goto out_close_rtdev; | |
756 | } | |
757 | } | |
758 | ||
759 | /* | |
760 | * Setup xfs_mount buffer target pointers | |
761 | */ | |
762 | error = ENOMEM; | |
e2a07812 | 763 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0, mp->m_fsname); |
19f354d4 CH |
764 | if (!mp->m_ddev_targp) |
765 | goto out_close_rtdev; | |
766 | ||
767 | if (rtdev) { | |
e2a07812 | 768 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1, mp->m_fsname); |
19f354d4 CH |
769 | if (!mp->m_rtdev_targp) |
770 | goto out_free_ddev_targ; | |
771 | } | |
772 | ||
773 | if (logdev && logdev != ddev) { | |
e2a07812 | 774 | mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1, mp->m_fsname); |
19f354d4 CH |
775 | if (!mp->m_logdev_targp) |
776 | goto out_free_rtdev_targ; | |
777 | } else { | |
778 | mp->m_logdev_targp = mp->m_ddev_targp; | |
779 | } | |
780 | ||
781 | return 0; | |
782 | ||
783 | out_free_rtdev_targ: | |
784 | if (mp->m_rtdev_targp) | |
b7963133 | 785 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 786 | out_free_ddev_targ: |
b7963133 | 787 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
788 | out_close_rtdev: |
789 | if (rtdev) | |
790 | xfs_blkdev_put(rtdev); | |
791 | out_close_logdev: | |
792 | if (logdev && logdev != ddev) | |
793 | xfs_blkdev_put(logdev); | |
794 | out: | |
795 | return error; | |
796 | } | |
797 | ||
e34b562c CH |
798 | /* |
799 | * Setup xfs_mount buffer target pointers based on superblock | |
800 | */ | |
801 | STATIC int | |
802 | xfs_setup_devices( | |
803 | struct xfs_mount *mp) | |
804 | { | |
805 | int error; | |
19f354d4 | 806 | |
e34b562c CH |
807 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
808 | mp->m_sb.sb_sectsize); | |
809 | if (error) | |
810 | return error; | |
811 | ||
812 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
813 | unsigned int log_sector_size = BBSIZE; | |
814 | ||
815 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
816 | log_sector_size = mp->m_sb.sb_logsectsize; | |
817 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
818 | mp->m_sb.sb_blocksize, | |
819 | log_sector_size); | |
820 | if (error) | |
821 | return error; | |
822 | } | |
823 | if (mp->m_rtdev_targp) { | |
824 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
825 | mp->m_sb.sb_blocksize, | |
826 | mp->m_sb.sb_sectsize); | |
827 | if (error) | |
828 | return error; | |
829 | } | |
830 | ||
831 | return 0; | |
832 | } | |
19f354d4 | 833 | |
249a8c11 DC |
834 | /* |
835 | * XFS AIL push thread support | |
836 | */ | |
837 | void | |
838 | xfsaild_wakeup( | |
82fa9012 | 839 | struct xfs_ail *ailp, |
249a8c11 DC |
840 | xfs_lsn_t threshold_lsn) |
841 | { | |
82fa9012 DC |
842 | ailp->xa_target = threshold_lsn; |
843 | wake_up_process(ailp->xa_task); | |
249a8c11 DC |
844 | } |
845 | ||
3180e66d | 846 | STATIC int |
249a8c11 DC |
847 | xfsaild( |
848 | void *data) | |
849 | { | |
82fa9012 | 850 | struct xfs_ail *ailp = data; |
249a8c11 | 851 | xfs_lsn_t last_pushed_lsn = 0; |
453eac8a | 852 | long tout = 0; /* milliseconds */ |
249a8c11 DC |
853 | |
854 | while (!kthread_should_stop()) { | |
453eac8a DC |
855 | schedule_timeout_interruptible(tout ? |
856 | msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); | |
249a8c11 DC |
857 | |
858 | /* swsusp */ | |
859 | try_to_freeze(); | |
860 | ||
82fa9012 DC |
861 | ASSERT(ailp->xa_mount->m_log); |
862 | if (XFS_FORCED_SHUTDOWN(ailp->xa_mount)) | |
249a8c11 DC |
863 | continue; |
864 | ||
82fa9012 | 865 | tout = xfsaild_push(ailp, &last_pushed_lsn); |
249a8c11 DC |
866 | } |
867 | ||
868 | return 0; | |
869 | } /* xfsaild */ | |
870 | ||
871 | int | |
872 | xfsaild_start( | |
82fa9012 | 873 | struct xfs_ail *ailp) |
249a8c11 | 874 | { |
82fa9012 | 875 | ailp->xa_target = 0; |
e2a07812 JE |
876 | ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild/%s", |
877 | ailp->xa_mount->m_fsname); | |
82fa9012 DC |
878 | if (IS_ERR(ailp->xa_task)) |
879 | return -PTR_ERR(ailp->xa_task); | |
249a8c11 DC |
880 | return 0; |
881 | } | |
882 | ||
883 | void | |
884 | xfsaild_stop( | |
82fa9012 | 885 | struct xfs_ail *ailp) |
249a8c11 | 886 | { |
82fa9012 | 887 | kthread_stop(ailp->xa_task); |
249a8c11 DC |
888 | } |
889 | ||
890 | ||
bf904248 | 891 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 892 | STATIC struct inode * |
a50cd269 | 893 | xfs_fs_alloc_inode( |
1da177e4 LT |
894 | struct super_block *sb) |
895 | { | |
bf904248 | 896 | BUG(); |
493dca61 | 897 | return NULL; |
1da177e4 LT |
898 | } |
899 | ||
bf904248 | 900 | /* |
99fa8cb3 DC |
901 | * Now that the generic code is guaranteed not to be accessing |
902 | * the linux inode, we can reclaim the inode. | |
bf904248 | 903 | */ |
1da177e4 | 904 | STATIC void |
a50cd269 | 905 | xfs_fs_destroy_inode( |
848ce8f7 | 906 | struct inode *inode) |
1da177e4 | 907 | { |
848ce8f7 CH |
908 | struct xfs_inode *ip = XFS_I(inode); |
909 | ||
910 | xfs_itrace_entry(ip); | |
99fa8cb3 DC |
911 | |
912 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
913 | |
914 | /* bad inode, get out here ASAP */ | |
915 | if (is_bad_inode(inode)) | |
916 | goto out_reclaim; | |
917 | ||
918 | xfs_ioend_wait(ip); | |
919 | ||
920 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); | |
921 | ||
922 | /* | |
923 | * We should never get here with one of the reclaim flags already set. | |
924 | */ | |
925 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
926 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
927 | ||
928 | /* | |
57817c68 DC |
929 | * We always use background reclaim here because even if the |
930 | * inode is clean, it still may be under IO and hence we have | |
931 | * to take the flush lock. The background reclaim path handles | |
932 | * this more efficiently than we can here, so simply let background | |
933 | * reclaim tear down all inodes. | |
848ce8f7 | 934 | */ |
848ce8f7 | 935 | out_reclaim: |
57817c68 | 936 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
937 | } |
938 | ||
07c8f675 DC |
939 | /* |
940 | * Slab object creation initialisation for the XFS inode. | |
941 | * This covers only the idempotent fields in the XFS inode; | |
942 | * all other fields need to be initialised on allocation | |
943 | * from the slab. This avoids the need to repeatedly intialise | |
944 | * fields in the xfs inode that left in the initialise state | |
945 | * when freeing the inode. | |
946 | */ | |
bf904248 DC |
947 | STATIC void |
948 | xfs_fs_inode_init_once( | |
07c8f675 DC |
949 | void *inode) |
950 | { | |
951 | struct xfs_inode *ip = inode; | |
952 | ||
953 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
954 | |
955 | /* vfs inode */ | |
956 | inode_init_once(VFS_I(ip)); | |
957 | ||
958 | /* xfs inode */ | |
07c8f675 DC |
959 | atomic_set(&ip->i_iocount, 0); |
960 | atomic_set(&ip->i_pincount, 0); | |
961 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
962 | init_waitqueue_head(&ip->i_ipin_wait); |
963 | /* | |
964 | * Because we want to use a counting completion, complete | |
965 | * the flush completion once to allow a single access to | |
966 | * the flush completion without blocking. | |
967 | */ | |
968 | init_completion(&ip->i_flush); | |
969 | complete(&ip->i_flush); | |
970 | ||
971 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
972 | "xfsino", ip->i_ino); | |
07c8f675 DC |
973 | } |
974 | ||
f9581b14 CH |
975 | /* |
976 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that | |
977 | * we catch unlogged VFS level updates to the inode. Care must be taken | |
978 | * here - the transaction code calls mark_inode_dirty_sync() to mark the | |
979 | * VFS inode dirty in a transaction and clears the i_update_core field; | |
980 | * it must clear the field after calling mark_inode_dirty_sync() to | |
981 | * correctly indicate that the dirty state has been propagated into the | |
982 | * inode log item. | |
983 | * | |
984 | * We need the barrier() to maintain correct ordering between unlogged | |
985 | * updates and the transaction commit code that clears the i_update_core | |
986 | * field. This requires all updates to be completed before marking the | |
987 | * inode dirty. | |
988 | */ | |
989 | STATIC void | |
990 | xfs_fs_dirty_inode( | |
991 | struct inode *inode) | |
992 | { | |
993 | barrier(); | |
994 | XFS_I(inode)->i_update_core = 1; | |
995 | } | |
996 | ||
07fec736 CH |
997 | STATIC int |
998 | xfs_log_inode( | |
999 | struct xfs_inode *ip) | |
1000 | { | |
1001 | struct xfs_mount *mp = ip->i_mount; | |
1002 | struct xfs_trans *tp; | |
1003 | int error; | |
1004 | ||
1005 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1006 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
1007 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); | |
1008 | ||
1009 | if (error) { | |
1010 | xfs_trans_cancel(tp, 0); | |
1011 | /* we need to return with the lock hold shared */ | |
1012 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1013 | return error; | |
1014 | } | |
1015 | ||
1016 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1017 | ||
1018 | /* | |
1019 | * Note - it's possible that we might have pushed ourselves out of the | |
1020 | * way during trans_reserve which would flush the inode. But there's | |
1021 | * no guarantee that the inode buffer has actually gone out yet (it's | |
1022 | * delwri). Plus the buffer could be pinned anyway if it's part of | |
1023 | * an inode in another recent transaction. So we play it safe and | |
1024 | * fire off the transaction anyway. | |
1025 | */ | |
898621d5 | 1026 | xfs_trans_ijoin(tp, ip); |
07fec736 | 1027 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
07fec736 CH |
1028 | error = xfs_trans_commit(tp, 0); |
1029 | xfs_ilock_demote(ip, XFS_ILOCK_EXCL); | |
1030 | ||
1031 | return error; | |
1032 | } | |
1033 | ||
1da177e4 | 1034 | STATIC int |
a50cd269 | 1035 | xfs_fs_write_inode( |
1da177e4 | 1036 | struct inode *inode, |
a9185b41 | 1037 | struct writeback_control *wbc) |
1da177e4 | 1038 | { |
2e656092 | 1039 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 1040 | struct xfs_mount *mp = ip->i_mount; |
07fec736 | 1041 | int error = EAGAIN; |
1da177e4 | 1042 | |
2e656092 | 1043 | xfs_itrace_entry(ip); |
d4bb6d06 CH |
1044 | |
1045 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1046 | return XFS_ERROR(EIO); | |
1047 | ||
a9185b41 | 1048 | if (wbc->sync_mode == WB_SYNC_ALL) { |
07fec736 | 1049 | /* |
7a36c8a9 CH |
1050 | * Make sure the inode has made it it into the log. Instead |
1051 | * of forcing it all the way to stable storage using a | |
1052 | * synchronous transaction we let the log force inside the | |
1053 | * ->sync_fs call do that for thus, which reduces the number | |
1054 | * of synchronous log foces dramatically. | |
07fec736 | 1055 | */ |
37bc5743 | 1056 | xfs_ioend_wait(ip); |
d4bb6d06 | 1057 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
07fec736 CH |
1058 | if (ip->i_update_core) { |
1059 | error = xfs_log_inode(ip); | |
1060 | if (error) | |
1061 | goto out_unlock; | |
1062 | } | |
d4bb6d06 | 1063 | } else { |
07fec736 CH |
1064 | /* |
1065 | * We make this non-blocking if the inode is contended, return | |
1066 | * EAGAIN to indicate to the caller that they did not succeed. | |
1067 | * This prevents the flush path from blocking on inodes inside | |
7a36c8a9 CH |
1068 | * another operation right now, they get caught later by |
1069 | * xfs_sync. | |
07fec736 | 1070 | */ |
d4bb6d06 CH |
1071 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
1072 | goto out; | |
07fec736 | 1073 | |
7a36c8a9 CH |
1074 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) |
1075 | goto out_unlock; | |
d4bb6d06 | 1076 | |
7a36c8a9 CH |
1077 | /* |
1078 | * Now we have the flush lock and the inode is not pinned, we | |
1079 | * can check if the inode is really clean as we know that | |
1080 | * there are no pending transaction completions, it is not | |
1081 | * waiting on the delayed write queue and there is no IO in | |
1082 | * progress. | |
1083 | */ | |
1084 | if (xfs_inode_clean(ip)) { | |
1085 | xfs_ifunlock(ip); | |
1086 | error = 0; | |
1087 | goto out_unlock; | |
1088 | } | |
1089 | error = xfs_iflush(ip, 0); | |
d4bb6d06 CH |
1090 | } |
1091 | ||
1092 | out_unlock: | |
1093 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1094 | out: | |
e893bffd LM |
1095 | /* |
1096 | * if we failed to write out the inode then mark | |
1097 | * it dirty again so we'll try again later. | |
1098 | */ | |
1099 | if (error) | |
2e656092 | 1100 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
1101 | return -error; |
1102 | } | |
1103 | ||
1104 | STATIC void | |
a50cd269 | 1105 | xfs_fs_clear_inode( |
1da177e4 LT |
1106 | struct inode *inode) |
1107 | { | |
1543d79c | 1108 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1109 | |
99fa8cb3 DC |
1110 | xfs_itrace_entry(ip); |
1111 | XFS_STATS_INC(vn_rele); | |
1112 | XFS_STATS_INC(vn_remove); | |
1113 | XFS_STATS_DEC(vn_active); | |
1114 | ||
033da48f CH |
1115 | /* |
1116 | * The iolock is used by the file system to coordinate reads, | |
1117 | * writes, and block truncates. Up to this point the lock | |
1118 | * protected concurrent accesses by users of the inode. But | |
1119 | * from here forward we're doing some final processing of the | |
1120 | * inode because we're done with it, and although we reuse the | |
1121 | * iolock for protection it is really a distinct lock class | |
1122 | * (in the lockdep sense) from before. To keep lockdep happy | |
1123 | * (and basically indicate what we are doing), we explicitly | |
1124 | * re-init the iolock here. | |
1125 | */ | |
1126 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
1127 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
1128 | ||
99fa8cb3 | 1129 | xfs_inactive(ip); |
56d433e4 | 1130 | } |
1da177e4 | 1131 | |
a738159d CH |
1132 | STATIC void |
1133 | xfs_free_fsname( | |
1134 | struct xfs_mount *mp) | |
1135 | { | |
1136 | kfree(mp->m_fsname); | |
1137 | kfree(mp->m_rtname); | |
1138 | kfree(mp->m_logname); | |
1139 | } | |
1140 | ||
1da177e4 | 1141 | STATIC void |
a50cd269 | 1142 | xfs_fs_put_super( |
1da177e4 LT |
1143 | struct super_block *sb) |
1144 | { | |
745f6919 | 1145 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1146 | |
a167b17e | 1147 | xfs_syncd_stop(mp); |
075fe102 | 1148 | |
e48ad316 CH |
1149 | /* |
1150 | * Blow away any referenced inode in the filestreams cache. | |
1151 | * This can and will cause log traffic as inodes go inactive | |
1152 | * here. | |
1153 | */ | |
1154 | xfs_filestream_unmount(mp); | |
1155 | ||
1156 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1157 | |
19f354d4 | 1158 | xfs_unmountfs(mp); |
6203300e | 1159 | xfs_freesb(mp); |
9bf729c0 | 1160 | xfs_inode_shrinker_unregister(mp); |
c962fb79 | 1161 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1162 | xfs_close_devices(mp); |
a738159d | 1163 | xfs_free_fsname(mp); |
c962fb79 | 1164 | kfree(mp); |
1da177e4 LT |
1165 | } |
1166 | ||
1da177e4 | 1167 | STATIC int |
69961a26 | 1168 | xfs_fs_sync_fs( |
1da177e4 LT |
1169 | struct super_block *sb, |
1170 | int wait) | |
1171 | { | |
745f6919 | 1172 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1173 | int error; |
1da177e4 | 1174 | |
e893bffd | 1175 | /* |
69961a26 CH |
1176 | * Not much we can do for the first async pass. Writing out the |
1177 | * superblock would be counter-productive as we are going to redirty | |
1178 | * when writing out other data and metadata (and writing out a single | |
1179 | * block is quite fast anyway). | |
1180 | * | |
1181 | * Try to asynchronously kick off quota syncing at least. | |
e893bffd | 1182 | */ |
69961a26 CH |
1183 | if (!wait) { |
1184 | xfs_qm_sync(mp, SYNC_TRYLOCK); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
1188 | error = xfs_quiesce_data(mp); | |
1189 | if (error) | |
1190 | return -error; | |
1da177e4 | 1191 | |
69961a26 | 1192 | if (laptop_mode) { |
74394496 | 1193 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1194 | |
1195 | /* | |
1196 | * The disk must be active because we're syncing. | |
1197 | * We schedule xfssyncd now (now that the disk is | |
1198 | * active) instead of later (when it might not be). | |
1199 | */ | |
74394496 | 1200 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1201 | /* |
1202 | * We have to wait for the sync iteration to complete. | |
1203 | * If we don't, the disk activity caused by the sync | |
1204 | * will come after the sync is completed, and that | |
1205 | * triggers another sync from laptop mode. | |
1206 | */ | |
74394496 CH |
1207 | wait_event(mp->m_wait_single_sync_task, |
1208 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1209 | } |
1210 | ||
69961a26 | 1211 | return 0; |
1da177e4 LT |
1212 | } |
1213 | ||
1214 | STATIC int | |
a50cd269 | 1215 | xfs_fs_statfs( |
726c3342 | 1216 | struct dentry *dentry, |
1da177e4 LT |
1217 | struct kstatfs *statp) |
1218 | { | |
4ca488eb CH |
1219 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1220 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1221 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1222 | __uint64_t fakeinos, id; |
1223 | xfs_extlen_t lsize; | |
1224 | ||
1225 | statp->f_type = XFS_SB_MAGIC; | |
1226 | statp->f_namelen = MAXNAMELEN - 1; | |
1227 | ||
1228 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1229 | statp->f_fsid.val[0] = (u32)id; | |
1230 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1231 | ||
d4d90b57 | 1232 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1233 | |
1234 | spin_lock(&mp->m_sb_lock); | |
1235 | statp->f_bsize = sbp->sb_blocksize; | |
1236 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1237 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1238 | statp->f_bfree = statp->f_bavail = | |
1239 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1240 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1241 | statp->f_files = |
1242 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1243 | if (mp->m_maxicount) | |
a19d9f88 CH |
1244 | statp->f_files = min_t(typeof(statp->f_files), |
1245 | statp->f_files, | |
1246 | mp->m_maxicount); | |
4ca488eb CH |
1247 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); |
1248 | spin_unlock(&mp->m_sb_lock); | |
1249 | ||
7d095257 CH |
1250 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1251 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1252 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1253 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1254 | return 0; |
1da177e4 LT |
1255 | } |
1256 | ||
d5db0f97 ES |
1257 | STATIC void |
1258 | xfs_save_resvblks(struct xfs_mount *mp) | |
1259 | { | |
1260 | __uint64_t resblks = 0; | |
1261 | ||
1262 | mp->m_resblks_save = mp->m_resblks; | |
1263 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1264 | } | |
1265 | ||
1266 | STATIC void | |
1267 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1268 | { | |
1269 | __uint64_t resblks; | |
1270 | ||
1271 | if (mp->m_resblks_save) { | |
1272 | resblks = mp->m_resblks_save; | |
1273 | mp->m_resblks_save = 0; | |
1274 | } else | |
1275 | resblks = xfs_default_resblks(mp); | |
1276 | ||
1277 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1278 | } | |
1279 | ||
1da177e4 | 1280 | STATIC int |
a50cd269 | 1281 | xfs_fs_remount( |
1da177e4 LT |
1282 | struct super_block *sb, |
1283 | int *flags, | |
1284 | char *options) | |
1285 | { | |
745f6919 | 1286 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1287 | substring_t args[MAX_OPT_ARGS]; |
1288 | char *p; | |
7884bc86 | 1289 | int error; |
1da177e4 | 1290 | |
62a877e3 CH |
1291 | while ((p = strsep(&options, ",")) != NULL) { |
1292 | int token; | |
bdd907ba | 1293 | |
62a877e3 CH |
1294 | if (!*p) |
1295 | continue; | |
48b62a1a | 1296 | |
62a877e3 CH |
1297 | token = match_token(p, tokens, args); |
1298 | switch (token) { | |
1299 | case Opt_barrier: | |
48b62a1a | 1300 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1301 | |
1302 | /* | |
1303 | * Test if barriers are actually working if we can, | |
1304 | * else delay this check until the filesystem is | |
1305 | * marked writeable. | |
1306 | */ | |
1307 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) | |
1308 | xfs_mountfs_check_barriers(mp); | |
1309 | break; | |
1310 | case Opt_nobarrier: | |
48b62a1a | 1311 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1312 | break; |
1313 | default: | |
6efdf281 CH |
1314 | /* |
1315 | * Logically we would return an error here to prevent | |
1316 | * users from believing they might have changed | |
1317 | * mount options using remount which can't be changed. | |
1318 | * | |
1319 | * But unfortunately mount(8) adds all options from | |
1320 | * mtab and fstab to the mount arguments in some cases | |
1321 | * so we can't blindly reject options, but have to | |
1322 | * check for each specified option if it actually | |
1323 | * differs from the currently set option and only | |
1324 | * reject it if that's the case. | |
1325 | * | |
1326 | * Until that is implemented we return success for | |
1327 | * every remount request, and silently ignore all | |
1328 | * options that we can't actually change. | |
1329 | */ | |
1330 | #if 0 | |
62a877e3 CH |
1331 | printk(KERN_INFO |
1332 | "XFS: mount option \"%s\" not supported for remount\n", p); | |
1333 | return -EINVAL; | |
6efdf281 | 1334 | #else |
6c5e51da | 1335 | break; |
6efdf281 | 1336 | #endif |
48b62a1a | 1337 | } |
62a877e3 CH |
1338 | } |
1339 | ||
7884bc86 | 1340 | /* ro -> rw */ |
62a877e3 CH |
1341 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1342 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
1343 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1344 | xfs_mountfs_check_barriers(mp); | |
7884bc86 CH |
1345 | |
1346 | /* | |
1347 | * If this is the first remount to writeable state we | |
1348 | * might have some superblock changes to update. | |
1349 | */ | |
1350 | if (mp->m_update_flags) { | |
1351 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1352 | if (error) { | |
1353 | cmn_err(CE_WARN, | |
1354 | "XFS: failed to write sb changes"); | |
1355 | return error; | |
1356 | } | |
1357 | mp->m_update_flags = 0; | |
1358 | } | |
cbe132a8 DC |
1359 | |
1360 | /* | |
1361 | * Fill out the reserve pool if it is empty. Use the stashed | |
1362 | * value if it is non-zero, otherwise go with the default. | |
1363 | */ | |
d5db0f97 | 1364 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1365 | } |
1366 | ||
1367 | /* rw -> ro */ | |
1368 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1369 | /* |
1370 | * After we have synced the data but before we sync the | |
1371 | * metadata, we need to free up the reserve block pool so that | |
1372 | * the used block count in the superblock on disk is correct at | |
1373 | * the end of the remount. Stash the current reserve pool size | |
1374 | * so that if we get remounted rw, we can return it to the same | |
1375 | * size. | |
1376 | */ | |
cbe132a8 | 1377 | |
e9f1c6ee | 1378 | xfs_quiesce_data(mp); |
d5db0f97 | 1379 | xfs_save_resvblks(mp); |
76bf105c | 1380 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1381 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1382 | } | |
1383 | ||
62a877e3 | 1384 | return 0; |
1da177e4 LT |
1385 | } |
1386 | ||
9909c4aa CH |
1387 | /* |
1388 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1389 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1390 | * record to dirty the log in case of a crash while frozen. |
1391 | */ | |
c4be0c1d TS |
1392 | STATIC int |
1393 | xfs_fs_freeze( | |
1da177e4 LT |
1394 | struct super_block *sb) |
1395 | { | |
9909c4aa CH |
1396 | struct xfs_mount *mp = XFS_M(sb); |
1397 | ||
d5db0f97 | 1398 | xfs_save_resvblks(mp); |
76bf105c | 1399 | xfs_quiesce_attr(mp); |
c4be0c1d | 1400 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1401 | } |
1402 | ||
d5db0f97 ES |
1403 | STATIC int |
1404 | xfs_fs_unfreeze( | |
1405 | struct super_block *sb) | |
1406 | { | |
1407 | struct xfs_mount *mp = XFS_M(sb); | |
1408 | ||
1409 | xfs_restore_resvblks(mp); | |
1410 | return 0; | |
1411 | } | |
1412 | ||
1da177e4 | 1413 | STATIC int |
a50cd269 | 1414 | xfs_fs_show_options( |
1da177e4 LT |
1415 | struct seq_file *m, |
1416 | struct vfsmount *mnt) | |
1417 | { | |
745f6919 | 1418 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1419 | } |
1420 | ||
f8f15e42 CH |
1421 | /* |
1422 | * This function fills in xfs_mount_t fields based on mount args. | |
1423 | * Note: the superblock _has_ now been read in. | |
1424 | */ | |
1425 | STATIC int | |
1426 | xfs_finish_flags( | |
f8f15e42 CH |
1427 | struct xfs_mount *mp) |
1428 | { | |
1429 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1430 | ||
025dfdaf | 1431 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1432 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1433 | if (mp->m_logbsize <= 0 && |
1434 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1435 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1436 | } else if (mp->m_logbsize > 0 && |
1437 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
f8f15e42 CH |
1438 | cmn_err(CE_WARN, |
1439 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
1440 | return XFS_ERROR(EINVAL); | |
1441 | } | |
1442 | } else { | |
1443 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1444 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
f8f15e42 CH |
1445 | cmn_err(CE_WARN, |
1446 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
1447 | return XFS_ERROR(EINVAL); | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1453 | * told by noattr2 to turn it off | |
1454 | */ | |
1455 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1456 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1457 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1458 | ||
1459 | /* | |
1460 | * prohibit r/w mounts of read-only filesystems | |
1461 | */ | |
1462 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
1463 | cmn_err(CE_WARN, | |
1464 | "XFS: cannot mount a read-only filesystem as read-write"); | |
1465 | return XFS_ERROR(EROFS); | |
1466 | } | |
1467 | ||
f8f15e42 CH |
1468 | return 0; |
1469 | } | |
1470 | ||
1da177e4 | 1471 | STATIC int |
a50cd269 | 1472 | xfs_fs_fill_super( |
1da177e4 LT |
1473 | struct super_block *sb, |
1474 | void *data, | |
1475 | int silent) | |
1476 | { | |
f3dcc13f | 1477 | struct inode *root; |
745f6919 | 1478 | struct xfs_mount *mp = NULL; |
c962fb79 | 1479 | int flags = 0, error = ENOMEM; |
bdd907ba | 1480 | |
c962fb79 CH |
1481 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1482 | if (!mp) | |
9d565ffa | 1483 | goto out; |
1da177e4 | 1484 | |
c962fb79 | 1485 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1486 | mutex_init(&mp->m_growlock); |
1487 | atomic_set(&mp->m_active_trans, 0); | |
74394496 CH |
1488 | INIT_LIST_HEAD(&mp->m_sync_list); |
1489 | spin_lock_init(&mp->m_sync_lock); | |
1490 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1491 | ||
b267ce99 CH |
1492 | mp->m_super = sb; |
1493 | sb->s_fs_info = mp; | |
1da177e4 | 1494 | |
288699fe | 1495 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1496 | if (error) |
9d565ffa | 1497 | goto out_free_fsname; |
1da177e4 LT |
1498 | |
1499 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1500 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1501 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1502 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1503 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1504 | #endif |
a50cd269 | 1505 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1506 | |
9d565ffa | 1507 | if (silent) |
f8f15e42 CH |
1508 | flags |= XFS_MFSI_QUIET; |
1509 | ||
9d565ffa | 1510 | error = xfs_open_devices(mp); |
19f354d4 | 1511 | if (error) |
288699fe | 1512 | goto out_free_fsname; |
f8f15e42 | 1513 | |
c962fb79 CH |
1514 | if (xfs_icsb_init_counters(mp)) |
1515 | mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; | |
1516 | ||
f8f15e42 CH |
1517 | error = xfs_readsb(mp, flags); |
1518 | if (error) | |
9d565ffa CH |
1519 | goto out_destroy_counters; |
1520 | ||
1521 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1522 | if (error) |
effa2eda | 1523 | goto out_free_sb; |
f8f15e42 | 1524 | |
e34b562c | 1525 | error = xfs_setup_devices(mp); |
19f354d4 | 1526 | if (error) |
effa2eda | 1527 | goto out_free_sb; |
f8f15e42 CH |
1528 | |
1529 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1530 | xfs_mountfs_check_barriers(mp); | |
1531 | ||
1532 | error = xfs_filestream_mount(mp); | |
1533 | if (error) | |
effa2eda | 1534 | goto out_free_sb; |
f8f15e42 | 1535 | |
4249023a | 1536 | error = xfs_mountfs(mp); |
f8f15e42 | 1537 | if (error) |
120226c1 | 1538 | goto out_filestream_unmount; |
f8f15e42 | 1539 | |
4ca488eb CH |
1540 | sb->s_magic = XFS_SB_MAGIC; |
1541 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1542 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1543 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1544 | sb->s_time_gran = 1; | |
1545 | set_posix_acl_flag(sb); | |
1546 | ||
01651646 | 1547 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1548 | if (!root) { |
cbc89dcf | 1549 | error = ENOENT; |
1da177e4 | 1550 | goto fail_unmount; |
cbc89dcf | 1551 | } |
f3dcc13f CH |
1552 | if (is_bad_inode(root)) { |
1553 | error = EINVAL; | |
1da177e4 LT |
1554 | goto fail_vnrele; |
1555 | } | |
f3dcc13f CH |
1556 | sb->s_root = d_alloc_root(root); |
1557 | if (!sb->s_root) { | |
1558 | error = ENOMEM; | |
1da177e4 LT |
1559 | goto fail_vnrele; |
1560 | } | |
74394496 | 1561 | |
a167b17e DC |
1562 | error = xfs_syncd_init(mp); |
1563 | if (error) | |
1da177e4 | 1564 | goto fail_vnrele; |
74394496 | 1565 | |
9bf729c0 DC |
1566 | xfs_inode_shrinker_register(mp); |
1567 | ||
1da177e4 LT |
1568 | return 0; |
1569 | ||
120226c1 CH |
1570 | out_filestream_unmount: |
1571 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1572 | out_free_sb: |
1573 | xfs_freesb(mp); | |
9d565ffa | 1574 | out_destroy_counters: |
c962fb79 | 1575 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1576 | xfs_close_devices(mp); |
9d565ffa CH |
1577 | out_free_fsname: |
1578 | xfs_free_fsname(mp); | |
c962fb79 | 1579 | kfree(mp); |
9d565ffa | 1580 | out: |
c962fb79 | 1581 | return -error; |
f8f15e42 CH |
1582 | |
1583 | fail_vnrele: | |
1da177e4 LT |
1584 | if (sb->s_root) { |
1585 | dput(sb->s_root); | |
1586 | sb->s_root = NULL; | |
1587 | } else { | |
f3dcc13f | 1588 | iput(root); |
1da177e4 LT |
1589 | } |
1590 | ||
f8f15e42 | 1591 | fail_unmount: |
e48ad316 CH |
1592 | /* |
1593 | * Blow away any referenced inode in the filestreams cache. | |
1594 | * This can and will cause log traffic as inodes go inactive | |
1595 | * here. | |
1596 | */ | |
1597 | xfs_filestream_unmount(mp); | |
1598 | ||
1599 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1600 | |
19f354d4 | 1601 | xfs_unmountfs(mp); |
6203300e | 1602 | goto out_free_sb; |
1da177e4 LT |
1603 | } |
1604 | ||
454e2398 | 1605 | STATIC int |
a50cd269 | 1606 | xfs_fs_get_sb( |
1da177e4 LT |
1607 | struct file_system_type *fs_type, |
1608 | int flags, | |
1609 | const char *dev_name, | |
454e2398 DH |
1610 | void *data, |
1611 | struct vfsmount *mnt) | |
1da177e4 | 1612 | { |
454e2398 DH |
1613 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
1614 | mnt); | |
a50cd269 NS |
1615 | } |
1616 | ||
b87221de | 1617 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1618 | .alloc_inode = xfs_fs_alloc_inode, |
1619 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1620 | .dirty_inode = xfs_fs_dirty_inode, |
a50cd269 NS |
1621 | .write_inode = xfs_fs_write_inode, |
1622 | .clear_inode = xfs_fs_clear_inode, | |
1623 | .put_super = xfs_fs_put_super, | |
69961a26 | 1624 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1625 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1626 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1627 | .statfs = xfs_fs_statfs, |
1628 | .remount_fs = xfs_fs_remount, | |
1629 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1630 | }; |
1631 | ||
5085b607 | 1632 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1633 | .owner = THIS_MODULE, |
1634 | .name = "xfs", | |
a50cd269 | 1635 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
1636 | .kill_sb = kill_block_super, |
1637 | .fs_flags = FS_REQUIRES_DEV, | |
1638 | }; | |
1639 | ||
9f8868ff CH |
1640 | STATIC int __init |
1641 | xfs_init_zones(void) | |
1642 | { | |
9f8868ff CH |
1643 | |
1644 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1645 | if (!xfs_ioend_zone) | |
bf904248 | 1646 | goto out; |
9f8868ff CH |
1647 | |
1648 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1649 | xfs_ioend_zone); | |
1650 | if (!xfs_ioend_pool) | |
1651 | goto out_destroy_ioend_zone; | |
1652 | ||
1653 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1654 | "xfs_log_ticket"); | |
1655 | if (!xfs_log_ticket_zone) | |
1656 | goto out_destroy_ioend_pool; | |
1657 | ||
1658 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1659 | "xfs_bmap_free_item"); | |
1660 | if (!xfs_bmap_free_item_zone) | |
1661 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1662 | |
9f8868ff CH |
1663 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1664 | "xfs_btree_cur"); | |
1665 | if (!xfs_btree_cur_zone) | |
1666 | goto out_destroy_bmap_free_item_zone; | |
1667 | ||
1668 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1669 | "xfs_da_state"); | |
1670 | if (!xfs_da_state_zone) | |
1671 | goto out_destroy_btree_cur_zone; | |
1672 | ||
1673 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1674 | if (!xfs_dabuf_zone) | |
1675 | goto out_destroy_da_state_zone; | |
1676 | ||
1677 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1678 | if (!xfs_ifork_zone) | |
1679 | goto out_destroy_dabuf_zone; | |
1680 | ||
1681 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1682 | if (!xfs_trans_zone) | |
1683 | goto out_destroy_ifork_zone; | |
1684 | ||
e98c414f CH |
1685 | xfs_log_item_desc_zone = |
1686 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1687 | "xfs_log_item_desc"); | |
1688 | if (!xfs_log_item_desc_zone) | |
1689 | goto out_destroy_trans_zone; | |
1690 | ||
9f8868ff CH |
1691 | /* |
1692 | * The size of the zone allocated buf log item is the maximum | |
1693 | * size possible under XFS. This wastes a little bit of memory, | |
1694 | * but it is much faster. | |
1695 | */ | |
1696 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
c1155410 | 1697 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
9f8868ff CH |
1698 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
1699 | if (!xfs_buf_item_zone) | |
e98c414f | 1700 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1701 | |
1702 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1703 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1704 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1705 | if (!xfs_efd_zone) | |
1706 | goto out_destroy_buf_item_zone; | |
1707 | ||
1708 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1709 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1710 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1711 | if (!xfs_efi_zone) | |
1712 | goto out_destroy_efd_zone; | |
1713 | ||
1714 | xfs_inode_zone = | |
1715 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1716 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1717 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1718 | if (!xfs_inode_zone) |
1719 | goto out_destroy_efi_zone; | |
1720 | ||
1721 | xfs_ili_zone = | |
1722 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1723 | KM_ZONE_SPREAD, NULL); | |
1724 | if (!xfs_ili_zone) | |
1725 | goto out_destroy_inode_zone; | |
1726 | ||
9f8868ff CH |
1727 | return 0; |
1728 | ||
9f8868ff CH |
1729 | out_destroy_inode_zone: |
1730 | kmem_zone_destroy(xfs_inode_zone); | |
1731 | out_destroy_efi_zone: | |
1732 | kmem_zone_destroy(xfs_efi_zone); | |
1733 | out_destroy_efd_zone: | |
1734 | kmem_zone_destroy(xfs_efd_zone); | |
1735 | out_destroy_buf_item_zone: | |
1736 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1737 | out_destroy_log_item_desc_zone: |
1738 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1739 | out_destroy_trans_zone: |
1740 | kmem_zone_destroy(xfs_trans_zone); | |
1741 | out_destroy_ifork_zone: | |
1742 | kmem_zone_destroy(xfs_ifork_zone); | |
1743 | out_destroy_dabuf_zone: | |
1744 | kmem_zone_destroy(xfs_dabuf_zone); | |
1745 | out_destroy_da_state_zone: | |
1746 | kmem_zone_destroy(xfs_da_state_zone); | |
1747 | out_destroy_btree_cur_zone: | |
1748 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1749 | out_destroy_bmap_free_item_zone: | |
1750 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1751 | out_destroy_log_ticket_zone: | |
1752 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1753 | out_destroy_ioend_pool: | |
1754 | mempool_destroy(xfs_ioend_pool); | |
1755 | out_destroy_ioend_zone: | |
1756 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1757 | out: |
1758 | return -ENOMEM; | |
1759 | } | |
1760 | ||
1761 | STATIC void | |
1762 | xfs_destroy_zones(void) | |
1763 | { | |
9f8868ff CH |
1764 | kmem_zone_destroy(xfs_ili_zone); |
1765 | kmem_zone_destroy(xfs_inode_zone); | |
1766 | kmem_zone_destroy(xfs_efi_zone); | |
1767 | kmem_zone_destroy(xfs_efd_zone); | |
1768 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1769 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1770 | kmem_zone_destroy(xfs_trans_zone); |
1771 | kmem_zone_destroy(xfs_ifork_zone); | |
1772 | kmem_zone_destroy(xfs_dabuf_zone); | |
1773 | kmem_zone_destroy(xfs_da_state_zone); | |
1774 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1775 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1776 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1777 | mempool_destroy(xfs_ioend_pool); | |
1778 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1779 | |
1780 | } | |
1da177e4 LT |
1781 | |
1782 | STATIC int __init | |
9f8868ff | 1783 | init_xfs_fs(void) |
1da177e4 LT |
1784 | { |
1785 | int error; | |
1da177e4 | 1786 | |
65795910 CH |
1787 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1788 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1789 | |
25e41b3d | 1790 | xfs_ioend_init(); |
9f8868ff | 1791 | xfs_dir_startup(); |
1da177e4 | 1792 | |
8758280f | 1793 | error = xfs_init_zones(); |
9f8868ff CH |
1794 | if (error) |
1795 | goto out; | |
1796 | ||
9f8868ff CH |
1797 | error = xfs_mru_cache_init(); |
1798 | if (error) | |
0b1b213f | 1799 | goto out_destroy_zones; |
9f8868ff CH |
1800 | |
1801 | error = xfs_filestream_init(); | |
1802 | if (error) | |
1803 | goto out_mru_cache_uninit; | |
1da177e4 | 1804 | |
ce8e922c | 1805 | error = xfs_buf_init(); |
9f8868ff CH |
1806 | if (error) |
1807 | goto out_filestream_uninit; | |
1808 | ||
1809 | error = xfs_init_procfs(); | |
1810 | if (error) | |
1811 | goto out_buf_terminate; | |
1812 | ||
1813 | error = xfs_sysctl_register(); | |
1814 | if (error) | |
1815 | goto out_cleanup_procfs; | |
1da177e4 | 1816 | |
1da177e4 LT |
1817 | vfs_initquota(); |
1818 | ||
1819 | error = register_filesystem(&xfs_fs_type); | |
1820 | if (error) | |
9f8868ff | 1821 | goto out_sysctl_unregister; |
1da177e4 LT |
1822 | return 0; |
1823 | ||
9f8868ff CH |
1824 | out_sysctl_unregister: |
1825 | xfs_sysctl_unregister(); | |
1826 | out_cleanup_procfs: | |
1827 | xfs_cleanup_procfs(); | |
1828 | out_buf_terminate: | |
ce8e922c | 1829 | xfs_buf_terminate(); |
9f8868ff CH |
1830 | out_filestream_uninit: |
1831 | xfs_filestream_uninit(); | |
1832 | out_mru_cache_uninit: | |
1833 | xfs_mru_cache_uninit(); | |
9f8868ff | 1834 | out_destroy_zones: |
8758280f | 1835 | xfs_destroy_zones(); |
9f8868ff | 1836 | out: |
1da177e4 LT |
1837 | return error; |
1838 | } | |
1839 | ||
1840 | STATIC void __exit | |
9f8868ff | 1841 | exit_xfs_fs(void) |
1da177e4 LT |
1842 | { |
1843 | vfs_exitquota(); | |
1da177e4 | 1844 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1845 | xfs_sysctl_unregister(); |
1846 | xfs_cleanup_procfs(); | |
ce8e922c | 1847 | xfs_buf_terminate(); |
9f8868ff CH |
1848 | xfs_filestream_uninit(); |
1849 | xfs_mru_cache_uninit(); | |
8758280f | 1850 | xfs_destroy_zones(); |
1da177e4 LT |
1851 | } |
1852 | ||
1853 | module_init(init_xfs_fs); | |
1854 | module_exit(exit_xfs_fs); | |
1855 | ||
1856 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1857 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1858 | MODULE_LICENSE("GPL"); |