Commit | Line | Data |
---|---|---|
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" |
a67d7c5f | 47 | #include "xfs_log_priv.h" |
249a8c11 | 48 | #include "xfs_trans_priv.h" |
48b62a1a | 49 | #include "xfs_filestream.h" |
9f8868ff | 50 | #include "xfs_da_btree.h" |
9f8868ff CH |
51 | #include "xfs_extfree_item.h" |
52 | #include "xfs_mru_cache.h" | |
53 | #include "xfs_inode_item.h" | |
fe4fa4b8 | 54 | #include "xfs_sync.h" |
0b1b213f | 55 | #include "xfs_trace.h" |
1da177e4 LT |
56 | |
57 | #include <linux/namei.h> | |
58 | #include <linux/init.h> | |
5a0e3ad6 | 59 | #include <linux/slab.h> |
1da177e4 | 60 | #include <linux/mount.h> |
0829c360 | 61 | #include <linux/mempool.h> |
1da177e4 | 62 | #include <linux/writeback.h> |
4df08c52 | 63 | #include <linux/kthread.h> |
7dfb7103 | 64 | #include <linux/freezer.h> |
62a877e3 | 65 | #include <linux/parser.h> |
1da177e4 | 66 | |
b87221de | 67 | static const struct super_operations xfs_super_operations; |
7989cb8e | 68 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 69 | mempool_t *xfs_ioend_pool; |
1da177e4 | 70 | |
a67d7c5f DC |
71 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
72 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
73 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
74 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
75 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
76 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
77 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
78 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
79 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
80 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
81 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
82 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
83 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
84 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
85 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
86 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
87 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
88 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
89 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
90 | * unwritten extent conversion */ | |
91 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f DC |
92 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
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 */ | |
71e330b5 DC |
113 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed loging enabled */ |
114 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed loging disabled */ | |
a67d7c5f | 115 | |
62a877e3 CH |
116 | /* |
117 | * Table driven mount option parser. | |
118 | * | |
119 | * Currently only used for remount, but it will be used for mount | |
120 | * in the future, too. | |
121 | */ | |
122 | enum { | |
123 | Opt_barrier, Opt_nobarrier, Opt_err | |
124 | }; | |
125 | ||
a447c093 | 126 | static const match_table_t tokens = { |
62a877e3 CH |
127 | {Opt_barrier, "barrier"}, |
128 | {Opt_nobarrier, "nobarrier"}, | |
129 | {Opt_err, NULL} | |
130 | }; | |
131 | ||
132 | ||
a67d7c5f DC |
133 | STATIC unsigned long |
134 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
135 | { | |
136 | int last, shift_left_factor = 0; | |
137 | char *value = s; | |
138 | ||
139 | last = strlen(value) - 1; | |
140 | if (value[last] == 'K' || value[last] == 'k') { | |
141 | shift_left_factor = 10; | |
142 | value[last] = '\0'; | |
143 | } | |
144 | if (value[last] == 'M' || value[last] == 'm') { | |
145 | shift_left_factor = 20; | |
146 | value[last] = '\0'; | |
147 | } | |
148 | if (value[last] == 'G' || value[last] == 'g') { | |
149 | shift_left_factor = 30; | |
150 | value[last] = '\0'; | |
151 | } | |
152 | ||
153 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
154 | } | |
155 | ||
9d565ffa CH |
156 | /* |
157 | * This function fills in xfs_mount_t fields based on mount args. | |
158 | * Note: the superblock has _not_ yet been read in. | |
159 | * | |
160 | * Note that this function leaks the various device name allocations on | |
161 | * failure. The caller takes care of them. | |
162 | */ | |
a67d7c5f DC |
163 | STATIC int |
164 | xfs_parseargs( | |
165 | struct xfs_mount *mp, | |
288699fe | 166 | char *options) |
a67d7c5f | 167 | { |
9d565ffa | 168 | struct super_block *sb = mp->m_super; |
a67d7c5f | 169 | char *this_char, *value, *eov; |
9d565ffa CH |
170 | int dsunit = 0; |
171 | int dswidth = 0; | |
172 | int iosize = 0; | |
a5687787 | 173 | __uint8_t iosizelog = 0; |
9d565ffa CH |
174 | |
175 | /* | |
176 | * Copy binary VFS mount flags we are interested in. | |
177 | */ | |
178 | if (sb->s_flags & MS_RDONLY) | |
179 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
180 | if (sb->s_flags & MS_DIRSYNC) | |
181 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
182 | if (sb->s_flags & MS_SYNCHRONOUS) | |
183 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
184 | ||
185 | /* | |
186 | * Set some default flags that could be cleared by the mount option | |
187 | * parsing. | |
188 | */ | |
189 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
190 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
191 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 192 | |
9d565ffa CH |
193 | /* |
194 | * These can be overridden by the mount option parsing. | |
195 | */ | |
196 | mp->m_logbufs = -1; | |
197 | mp->m_logbsize = -1; | |
a67d7c5f DC |
198 | |
199 | if (!options) | |
200 | goto done; | |
201 | ||
a67d7c5f DC |
202 | while ((this_char = strsep(&options, ",")) != NULL) { |
203 | if (!*this_char) | |
204 | continue; | |
205 | if ((value = strchr(this_char, '=')) != NULL) | |
206 | *value++ = 0; | |
207 | ||
208 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
209 | if (!value || !*value) { | |
210 | cmn_err(CE_WARN, | |
211 | "XFS: %s option requires an argument", | |
212 | this_char); | |
213 | return EINVAL; | |
214 | } | |
9d565ffa | 215 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
216 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
217 | if (!value || !*value) { | |
218 | cmn_err(CE_WARN, | |
219 | "XFS: %s option requires an argument", | |
220 | this_char); | |
221 | return EINVAL; | |
222 | } | |
9d565ffa | 223 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
224 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
225 | if (!value || !*value) { | |
226 | cmn_err(CE_WARN, | |
227 | "XFS: %s option requires an argument", | |
228 | this_char); | |
229 | return EINVAL; | |
230 | } | |
9d565ffa CH |
231 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
232 | if (!mp->m_logname) | |
233 | return ENOMEM; | |
a67d7c5f | 234 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
288699fe CH |
235 | cmn_err(CE_WARN, |
236 | "XFS: %s option not allowed on this system", | |
237 | this_char); | |
238 | return EINVAL; | |
a67d7c5f DC |
239 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
240 | if (!value || !*value) { | |
241 | cmn_err(CE_WARN, | |
242 | "XFS: %s option requires an argument", | |
243 | this_char); | |
244 | return EINVAL; | |
245 | } | |
9d565ffa CH |
246 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
247 | if (!mp->m_rtname) | |
248 | return ENOMEM; | |
a67d7c5f DC |
249 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
250 | if (!value || !*value) { | |
251 | cmn_err(CE_WARN, | |
252 | "XFS: %s option requires an argument", | |
253 | this_char); | |
254 | return EINVAL; | |
255 | } | |
256 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 257 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
258 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
259 | if (!value || !*value) { | |
260 | cmn_err(CE_WARN, | |
261 | "XFS: %s option requires an argument", | |
262 | this_char); | |
263 | return EINVAL; | |
264 | } | |
265 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 266 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
267 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
268 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
269 | mp->m_flags |= XFS_MOUNT_GRPID; | |
270 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
271 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
272 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
273 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 274 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 275 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 276 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 277 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 278 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 279 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 280 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
281 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
282 | if (!value || !*value) { | |
283 | cmn_err(CE_WARN, | |
284 | "XFS: %s option requires an argument", | |
285 | this_char); | |
286 | return EINVAL; | |
287 | } | |
288 | dsunit = simple_strtoul(value, &eov, 10); | |
289 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
290 | if (!value || !*value) { | |
291 | cmn_err(CE_WARN, | |
292 | "XFS: %s option requires an argument", | |
293 | this_char); | |
294 | return EINVAL; | |
295 | } | |
296 | dswidth = simple_strtoul(value, &eov, 10); | |
297 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
9d565ffa | 298 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f DC |
299 | #if !XFS_BIG_INUMS |
300 | cmn_err(CE_WARN, | |
301 | "XFS: %s option not allowed on this system", | |
302 | this_char); | |
303 | return EINVAL; | |
304 | #endif | |
305 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 306 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 307 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 308 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 309 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 310 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 311 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 312 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 313 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 314 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 315 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 316 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 317 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 318 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 319 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 320 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 321 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
322 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
323 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 324 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 325 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 326 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
9d565ffa CH |
327 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
328 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | | |
469fc23d | 329 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
9d565ffa | 330 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
a67d7c5f DC |
331 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
332 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
333 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
334 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
335 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
336 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
337 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
338 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
339 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
340 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
341 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
342 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
343 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 344 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
345 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
346 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
347 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
348 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
349 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
350 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 351 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
352 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
353 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 DC |
354 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
355 | mp->m_flags |= XFS_MOUNT_DELAYLOG; | |
356 | cmn_err(CE_WARN, | |
357 | "Enabling EXPERIMENTAL delayed logging feature " | |
358 | "- use at your own risk.\n"); | |
359 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { | |
360 | mp->m_flags &= ~XFS_MOUNT_DELAYLOG; | |
a67d7c5f DC |
361 | } else if (!strcmp(this_char, "ihashsize")) { |
362 | cmn_err(CE_WARN, | |
363 | "XFS: ihashsize no longer used, option is deprecated."); | |
364 | } else if (!strcmp(this_char, "osyncisdsync")) { | |
a67d7c5f | 365 | cmn_err(CE_WARN, |
a64afb05 CH |
366 | "XFS: osyncisdsync has no effect, option is deprecated."); |
367 | } else if (!strcmp(this_char, "osyncisosync")) { | |
368 | cmn_err(CE_WARN, | |
369 | "XFS: osyncisosync has no effect, option is deprecated."); | |
a67d7c5f DC |
370 | } else if (!strcmp(this_char, "irixsgid")) { |
371 | cmn_err(CE_WARN, | |
372 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
373 | } else { | |
374 | cmn_err(CE_WARN, | |
375 | "XFS: unknown mount option [%s].", this_char); | |
376 | return EINVAL; | |
377 | } | |
378 | } | |
379 | ||
9d565ffa CH |
380 | /* |
381 | * no recovery flag requires a read-only mount | |
382 | */ | |
383 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
384 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
385 | cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); | |
386 | return EINVAL; | |
a67d7c5f DC |
387 | } |
388 | ||
9d565ffa | 389 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
a67d7c5f DC |
390 | cmn_err(CE_WARN, |
391 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
392 | return EINVAL; | |
393 | } | |
394 | ||
7d095257 CH |
395 | #ifndef CONFIG_XFS_QUOTA |
396 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
397 | cmn_err(CE_WARN, | |
398 | "XFS: quota support not available in this kernel."); | |
399 | return EINVAL; | |
400 | } | |
401 | #endif | |
402 | ||
9d565ffa CH |
403 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
404 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
a67d7c5f DC |
405 | cmn_err(CE_WARN, |
406 | "XFS: cannot mount with both project and group quota"); | |
407 | return EINVAL; | |
408 | } | |
409 | ||
a67d7c5f DC |
410 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
411 | cmn_err(CE_WARN, | |
412 | "XFS: sunit and swidth must be specified together"); | |
413 | return EINVAL; | |
414 | } | |
415 | ||
416 | if (dsunit && (dswidth % dsunit != 0)) { | |
417 | cmn_err(CE_WARN, | |
418 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
419 | dswidth, dsunit); | |
420 | return EINVAL; | |
421 | } | |
422 | ||
9d565ffa CH |
423 | done: |
424 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
425 | /* | |
426 | * At this point the superblock has not been read | |
427 | * in, therefore we do not know the block size. | |
428 | * Before the mount call ends we will convert | |
429 | * these to FSBs. | |
430 | */ | |
a67d7c5f | 431 | if (dsunit) { |
9d565ffa CH |
432 | mp->m_dalign = dsunit; |
433 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 434 | } |
9d565ffa CH |
435 | |
436 | if (dswidth) | |
437 | mp->m_swidth = dswidth; | |
438 | } | |
439 | ||
440 | if (mp->m_logbufs != -1 && | |
441 | mp->m_logbufs != 0 && | |
442 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
443 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
444 | cmn_err(CE_WARN, | |
445 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
446 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
447 | return XFS_ERROR(EINVAL); | |
448 | } | |
449 | if (mp->m_logbsize != -1 && | |
450 | mp->m_logbsize != 0 && | |
451 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
452 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
453 | !is_power_of_2(mp->m_logbsize))) { | |
454 | cmn_err(CE_WARN, | |
455 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
456 | mp->m_logbsize); | |
457 | return XFS_ERROR(EINVAL); | |
458 | } | |
459 | ||
460 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
461 | if (!mp->m_fsname) | |
462 | return ENOMEM; | |
463 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
464 | ||
465 | if (iosizelog) { | |
466 | if (iosizelog > XFS_MAX_IO_LOG || | |
467 | iosizelog < XFS_MIN_IO_LOG) { | |
468 | cmn_err(CE_WARN, | |
469 | "XFS: invalid log iosize: %d [not %d-%d]", | |
470 | iosizelog, XFS_MIN_IO_LOG, | |
471 | XFS_MAX_IO_LOG); | |
472 | return XFS_ERROR(EINVAL); | |
473 | } | |
474 | ||
475 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
476 | mp->m_readio_log = iosizelog; | |
477 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
478 | } |
479 | ||
a67d7c5f DC |
480 | return 0; |
481 | } | |
482 | ||
483 | struct proc_xfs_info { | |
484 | int flag; | |
485 | char *str; | |
486 | }; | |
487 | ||
488 | STATIC int | |
489 | xfs_showargs( | |
490 | struct xfs_mount *mp, | |
491 | struct seq_file *m) | |
492 | { | |
493 | static struct proc_xfs_info xfs_info_set[] = { | |
494 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 495 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 496 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
497 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
498 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
499 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
500 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
501 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
502 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 503 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
71e330b5 | 504 | { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, |
a67d7c5f DC |
505 | { 0, NULL } |
506 | }; | |
507 | static struct proc_xfs_info xfs_info_unset[] = { | |
508 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
509 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
510 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
511 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
512 | { 0, NULL } | |
513 | }; | |
514 | struct proc_xfs_info *xfs_infop; | |
515 | ||
516 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
517 | if (mp->m_flags & xfs_infop->flag) | |
518 | seq_puts(m, xfs_infop->str); | |
519 | } | |
520 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
521 | if (!(mp->m_flags & xfs_infop->flag)) | |
522 | seq_puts(m, xfs_infop->str); | |
523 | } | |
524 | ||
525 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
526 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
527 | (int)(1 << mp->m_writeio_log) >> 10); | |
528 | ||
529 | if (mp->m_logbufs > 0) | |
530 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
531 | if (mp->m_logbsize > 0) | |
532 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
533 | ||
534 | if (mp->m_logname) | |
535 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
536 | if (mp->m_rtname) | |
537 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
538 | ||
539 | if (mp->m_dalign > 0) | |
540 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
541 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
542 | if (mp->m_swidth > 0) | |
543 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
544 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
545 | ||
546 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
547 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
548 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
549 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
550 | ||
988abe40 AE |
551 | /* Either project or group quotas can be active, not both */ |
552 | ||
553 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
554 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
555 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
556 | else | |
557 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
558 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
559 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
560 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
561 | else | |
562 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
563 | } | |
a67d7c5f DC |
564 | |
565 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
566 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
567 | ||
568 | return 0; | |
569 | } | |
1da177e4 LT |
570 | __uint64_t |
571 | xfs_max_file_offset( | |
572 | unsigned int blockshift) | |
573 | { | |
574 | unsigned int pagefactor = 1; | |
575 | unsigned int bitshift = BITS_PER_LONG - 1; | |
576 | ||
577 | /* Figure out maximum filesize, on Linux this can depend on | |
578 | * the filesystem blocksize (on 32 bit platforms). | |
579 | * __block_prepare_write does this in an [unsigned] long... | |
580 | * page->index << (PAGE_CACHE_SHIFT - bbits) | |
581 | * So, for page sized blocks (4K on 32 bit platforms), | |
582 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
583 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
584 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
585 | * Note1: get_block_t takes a long (implicit cast from above) | |
586 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
587 | * can optionally convert the [unsigned] long from above into | |
588 | * an [unsigned] long long. | |
589 | */ | |
590 | ||
591 | #if BITS_PER_LONG == 32 | |
90c699a9 | 592 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
593 | ASSERT(sizeof(sector_t) == 8); |
594 | pagefactor = PAGE_CACHE_SIZE; | |
595 | bitshift = BITS_PER_LONG; | |
596 | # else | |
597 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
598 | # endif | |
599 | #endif | |
600 | ||
601 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
602 | } | |
603 | ||
3180e66d | 604 | STATIC int |
1da177e4 LT |
605 | xfs_blkdev_get( |
606 | xfs_mount_t *mp, | |
607 | const char *name, | |
608 | struct block_device **bdevp) | |
609 | { | |
610 | int error = 0; | |
611 | ||
30c40d2c | 612 | *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); |
1da177e4 LT |
613 | if (IS_ERR(*bdevp)) { |
614 | error = PTR_ERR(*bdevp); | |
615 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
616 | } | |
617 | ||
618 | return -error; | |
619 | } | |
620 | ||
3180e66d | 621 | STATIC void |
1da177e4 LT |
622 | xfs_blkdev_put( |
623 | struct block_device *bdev) | |
624 | { | |
625 | if (bdev) | |
30c40d2c | 626 | close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); |
1da177e4 LT |
627 | } |
628 | ||
f538d4da CH |
629 | /* |
630 | * Try to write out the superblock using barriers. | |
631 | */ | |
632 | STATIC int | |
633 | xfs_barrier_test( | |
634 | xfs_mount_t *mp) | |
635 | { | |
636 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
637 | int error; | |
638 | ||
639 | XFS_BUF_UNDONE(sbp); | |
640 | XFS_BUF_UNREAD(sbp); | |
641 | XFS_BUF_UNDELAYWRITE(sbp); | |
642 | XFS_BUF_WRITE(sbp); | |
643 | XFS_BUF_UNASYNC(sbp); | |
644 | XFS_BUF_ORDERED(sbp); | |
645 | ||
646 | xfsbdstrat(mp, sbp); | |
647 | error = xfs_iowait(sbp); | |
648 | ||
649 | /* | |
650 | * Clear all the flags we set and possible error state in the | |
651 | * buffer. We only did the write to try out whether barriers | |
652 | * worked and shouldn't leave any traces in the superblock | |
653 | * buffer. | |
654 | */ | |
655 | XFS_BUF_DONE(sbp); | |
656 | XFS_BUF_ERROR(sbp, 0); | |
657 | XFS_BUF_UNORDERED(sbp); | |
658 | ||
659 | xfs_buf_relse(sbp); | |
660 | return error; | |
661 | } | |
662 | ||
d96f8f89 | 663 | STATIC void |
f538d4da CH |
664 | xfs_mountfs_check_barriers(xfs_mount_t *mp) |
665 | { | |
666 | int error; | |
667 | ||
668 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
669 | xfs_fs_cmn_err(CE_NOTE, mp, | |
670 | "Disabling barriers, not supported with external log device"); | |
671 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 672 | return; |
f538d4da CH |
673 | } |
674 | ||
b2ea401b NS |
675 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
676 | xfs_fs_cmn_err(CE_NOTE, mp, | |
677 | "Disabling barriers, underlying device is readonly"); | |
678 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
679 | return; | |
680 | } | |
681 | ||
f538d4da CH |
682 | error = xfs_barrier_test(mp); |
683 | if (error) { | |
684 | xfs_fs_cmn_err(CE_NOTE, mp, | |
685 | "Disabling barriers, trial barrier write failed"); | |
686 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 687 | return; |
f538d4da CH |
688 | } |
689 | } | |
690 | ||
691 | void | |
692 | xfs_blkdev_issue_flush( | |
693 | xfs_buftarg_t *buftarg) | |
694 | { | |
fbd9b09a DM |
695 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL, |
696 | BLKDEV_IFL_WAIT); | |
f538d4da | 697 | } |
1da177e4 | 698 | |
19f354d4 CH |
699 | STATIC void |
700 | xfs_close_devices( | |
701 | struct xfs_mount *mp) | |
702 | { | |
703 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 704 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 705 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 706 | xfs_blkdev_put(logdev); |
19f354d4 CH |
707 | } |
708 | if (mp->m_rtdev_targp) { | |
c032bfcf | 709 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 710 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 711 | xfs_blkdev_put(rtdev); |
19f354d4 | 712 | } |
b7963133 | 713 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
714 | } |
715 | ||
716 | /* | |
717 | * The file system configurations are: | |
718 | * (1) device (partition) with data and internal log | |
719 | * (2) logical volume with data and log subvolumes. | |
720 | * (3) logical volume with data, log, and realtime subvolumes. | |
721 | * | |
722 | * We only have to handle opening the log and realtime volumes here if | |
723 | * they are present. The data subvolume has already been opened by | |
724 | * get_sb_bdev() and is stored in sb->s_bdev. | |
725 | */ | |
726 | STATIC int | |
727 | xfs_open_devices( | |
9d565ffa | 728 | struct xfs_mount *mp) |
19f354d4 CH |
729 | { |
730 | struct block_device *ddev = mp->m_super->s_bdev; | |
731 | struct block_device *logdev = NULL, *rtdev = NULL; | |
732 | int error; | |
733 | ||
734 | /* | |
735 | * Open real time and log devices - order is important. | |
736 | */ | |
9d565ffa CH |
737 | if (mp->m_logname) { |
738 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
739 | if (error) |
740 | goto out; | |
741 | } | |
742 | ||
9d565ffa CH |
743 | if (mp->m_rtname) { |
744 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
745 | if (error) |
746 | goto out_close_logdev; | |
747 | ||
748 | if (rtdev == ddev || rtdev == logdev) { | |
749 | cmn_err(CE_WARN, | |
750 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
751 | error = EINVAL; | |
752 | goto out_close_rtdev; | |
753 | } | |
754 | } | |
755 | ||
756 | /* | |
757 | * Setup xfs_mount buffer target pointers | |
758 | */ | |
759 | error = ENOMEM; | |
ebad861b | 760 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
761 | if (!mp->m_ddev_targp) |
762 | goto out_close_rtdev; | |
763 | ||
764 | if (rtdev) { | |
ebad861b DC |
765 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
766 | mp->m_fsname); | |
19f354d4 CH |
767 | if (!mp->m_rtdev_targp) |
768 | goto out_free_ddev_targ; | |
769 | } | |
770 | ||
771 | if (logdev && logdev != ddev) { | |
ebad861b DC |
772 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
773 | mp->m_fsname); | |
19f354d4 CH |
774 | if (!mp->m_logdev_targp) |
775 | goto out_free_rtdev_targ; | |
776 | } else { | |
777 | mp->m_logdev_targp = mp->m_ddev_targp; | |
778 | } | |
779 | ||
780 | return 0; | |
781 | ||
782 | out_free_rtdev_targ: | |
783 | if (mp->m_rtdev_targp) | |
b7963133 | 784 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 785 | out_free_ddev_targ: |
b7963133 | 786 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
787 | out_close_rtdev: |
788 | if (rtdev) | |
789 | xfs_blkdev_put(rtdev); | |
790 | out_close_logdev: | |
791 | if (logdev && logdev != ddev) | |
792 | xfs_blkdev_put(logdev); | |
793 | out: | |
794 | return error; | |
795 | } | |
796 | ||
e34b562c CH |
797 | /* |
798 | * Setup xfs_mount buffer target pointers based on superblock | |
799 | */ | |
800 | STATIC int | |
801 | xfs_setup_devices( | |
802 | struct xfs_mount *mp) | |
803 | { | |
804 | int error; | |
19f354d4 | 805 | |
e34b562c CH |
806 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
807 | mp->m_sb.sb_sectsize); | |
808 | if (error) | |
809 | return error; | |
810 | ||
811 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
812 | unsigned int log_sector_size = BBSIZE; | |
813 | ||
814 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
815 | log_sector_size = mp->m_sb.sb_logsectsize; | |
816 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
817 | mp->m_sb.sb_blocksize, | |
818 | log_sector_size); | |
819 | if (error) | |
820 | return error; | |
821 | } | |
822 | if (mp->m_rtdev_targp) { | |
823 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
824 | mp->m_sb.sb_blocksize, | |
825 | mp->m_sb.sb_sectsize); | |
826 | if (error) | |
827 | return error; | |
828 | } | |
829 | ||
830 | return 0; | |
831 | } | |
19f354d4 | 832 | |
249a8c11 DC |
833 | /* |
834 | * XFS AIL push thread support | |
835 | */ | |
836 | void | |
837 | xfsaild_wakeup( | |
82fa9012 | 838 | struct xfs_ail *ailp, |
249a8c11 DC |
839 | xfs_lsn_t threshold_lsn) |
840 | { | |
82fa9012 DC |
841 | ailp->xa_target = threshold_lsn; |
842 | wake_up_process(ailp->xa_task); | |
249a8c11 DC |
843 | } |
844 | ||
3180e66d | 845 | STATIC int |
249a8c11 DC |
846 | xfsaild( |
847 | void *data) | |
848 | { | |
82fa9012 | 849 | struct xfs_ail *ailp = data; |
249a8c11 | 850 | xfs_lsn_t last_pushed_lsn = 0; |
453eac8a | 851 | long tout = 0; /* milliseconds */ |
249a8c11 DC |
852 | |
853 | while (!kthread_should_stop()) { | |
453eac8a DC |
854 | schedule_timeout_interruptible(tout ? |
855 | msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); | |
249a8c11 DC |
856 | |
857 | /* swsusp */ | |
858 | try_to_freeze(); | |
859 | ||
82fa9012 DC |
860 | ASSERT(ailp->xa_mount->m_log); |
861 | if (XFS_FORCED_SHUTDOWN(ailp->xa_mount)) | |
249a8c11 DC |
862 | continue; |
863 | ||
82fa9012 | 864 | tout = xfsaild_push(ailp, &last_pushed_lsn); |
249a8c11 DC |
865 | } |
866 | ||
867 | return 0; | |
868 | } /* xfsaild */ | |
869 | ||
870 | int | |
871 | xfsaild_start( | |
82fa9012 | 872 | struct xfs_ail *ailp) |
249a8c11 | 873 | { |
82fa9012 | 874 | ailp->xa_target = 0; |
e2a07812 JE |
875 | ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild/%s", |
876 | ailp->xa_mount->m_fsname); | |
82fa9012 DC |
877 | if (IS_ERR(ailp->xa_task)) |
878 | return -PTR_ERR(ailp->xa_task); | |
249a8c11 DC |
879 | return 0; |
880 | } | |
881 | ||
882 | void | |
883 | xfsaild_stop( | |
82fa9012 | 884 | struct xfs_ail *ailp) |
249a8c11 | 885 | { |
82fa9012 | 886 | kthread_stop(ailp->xa_task); |
249a8c11 DC |
887 | } |
888 | ||
889 | ||
bf904248 | 890 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 891 | STATIC struct inode * |
a50cd269 | 892 | xfs_fs_alloc_inode( |
1da177e4 LT |
893 | struct super_block *sb) |
894 | { | |
bf904248 | 895 | BUG(); |
493dca61 | 896 | return NULL; |
1da177e4 LT |
897 | } |
898 | ||
bf904248 | 899 | /* |
99fa8cb3 DC |
900 | * Now that the generic code is guaranteed not to be accessing |
901 | * the linux inode, we can reclaim the inode. | |
bf904248 | 902 | */ |
1da177e4 | 903 | STATIC void |
a50cd269 | 904 | xfs_fs_destroy_inode( |
848ce8f7 | 905 | struct inode *inode) |
1da177e4 | 906 | { |
848ce8f7 CH |
907 | struct xfs_inode *ip = XFS_I(inode); |
908 | ||
cca28fb8 | 909 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
910 | |
911 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
912 | |
913 | /* bad inode, get out here ASAP */ | |
914 | if (is_bad_inode(inode)) | |
915 | goto out_reclaim; | |
916 | ||
917 | xfs_ioend_wait(ip); | |
918 | ||
919 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); | |
920 | ||
921 | /* | |
922 | * We should never get here with one of the reclaim flags already set. | |
923 | */ | |
924 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
925 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
926 | ||
927 | /* | |
57817c68 DC |
928 | * We always use background reclaim here because even if the |
929 | * inode is clean, it still may be under IO and hence we have | |
930 | * to take the flush lock. The background reclaim path handles | |
931 | * this more efficiently than we can here, so simply let background | |
932 | * reclaim tear down all inodes. | |
848ce8f7 | 933 | */ |
848ce8f7 | 934 | out_reclaim: |
57817c68 | 935 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
936 | } |
937 | ||
07c8f675 DC |
938 | /* |
939 | * Slab object creation initialisation for the XFS inode. | |
940 | * This covers only the idempotent fields in the XFS inode; | |
941 | * all other fields need to be initialised on allocation | |
942 | * from the slab. This avoids the need to repeatedly intialise | |
943 | * fields in the xfs inode that left in the initialise state | |
944 | * when freeing the inode. | |
945 | */ | |
bf904248 DC |
946 | STATIC void |
947 | xfs_fs_inode_init_once( | |
07c8f675 DC |
948 | void *inode) |
949 | { | |
950 | struct xfs_inode *ip = inode; | |
951 | ||
952 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
953 | |
954 | /* vfs inode */ | |
955 | inode_init_once(VFS_I(ip)); | |
956 | ||
957 | /* xfs inode */ | |
07c8f675 DC |
958 | atomic_set(&ip->i_iocount, 0); |
959 | atomic_set(&ip->i_pincount, 0); | |
960 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
961 | init_waitqueue_head(&ip->i_ipin_wait); |
962 | /* | |
963 | * Because we want to use a counting completion, complete | |
964 | * the flush completion once to allow a single access to | |
965 | * the flush completion without blocking. | |
966 | */ | |
967 | init_completion(&ip->i_flush); | |
968 | complete(&ip->i_flush); | |
969 | ||
970 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
971 | "xfsino", ip->i_ino); | |
07c8f675 DC |
972 | } |
973 | ||
f9581b14 CH |
974 | /* |
975 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that | |
dcd79a14 | 976 | * we catch unlogged VFS level updates to the inode. |
f9581b14 CH |
977 | * |
978 | * We need the barrier() to maintain correct ordering between unlogged | |
979 | * updates and the transaction commit code that clears the i_update_core | |
980 | * field. This requires all updates to be completed before marking the | |
981 | * inode dirty. | |
982 | */ | |
983 | STATIC void | |
984 | xfs_fs_dirty_inode( | |
985 | struct inode *inode) | |
986 | { | |
987 | barrier(); | |
988 | XFS_I(inode)->i_update_core = 1; | |
989 | } | |
990 | ||
07fec736 CH |
991 | STATIC int |
992 | xfs_log_inode( | |
993 | struct xfs_inode *ip) | |
994 | { | |
995 | struct xfs_mount *mp = ip->i_mount; | |
996 | struct xfs_trans *tp; | |
997 | int error; | |
998 | ||
999 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1000 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
1001 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); | |
1002 | ||
1003 | if (error) { | |
1004 | xfs_trans_cancel(tp, 0); | |
1005 | /* we need to return with the lock hold shared */ | |
1006 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1007 | return error; | |
1008 | } | |
1009 | ||
1010 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1011 | ||
1012 | /* | |
1013 | * Note - it's possible that we might have pushed ourselves out of the | |
1014 | * way during trans_reserve which would flush the inode. But there's | |
1015 | * no guarantee that the inode buffer has actually gone out yet (it's | |
1016 | * delwri). Plus the buffer could be pinned anyway if it's part of | |
1017 | * an inode in another recent transaction. So we play it safe and | |
1018 | * fire off the transaction anyway. | |
1019 | */ | |
898621d5 | 1020 | xfs_trans_ijoin(tp, ip); |
07fec736 | 1021 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
07fec736 CH |
1022 | error = xfs_trans_commit(tp, 0); |
1023 | xfs_ilock_demote(ip, XFS_ILOCK_EXCL); | |
1024 | ||
1025 | return error; | |
1026 | } | |
1027 | ||
1da177e4 | 1028 | STATIC int |
a50cd269 | 1029 | xfs_fs_write_inode( |
1da177e4 | 1030 | struct inode *inode, |
a9185b41 | 1031 | struct writeback_control *wbc) |
1da177e4 | 1032 | { |
2e656092 | 1033 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 1034 | struct xfs_mount *mp = ip->i_mount; |
07fec736 | 1035 | int error = EAGAIN; |
1da177e4 | 1036 | |
cca28fb8 | 1037 | trace_xfs_write_inode(ip); |
d4bb6d06 CH |
1038 | |
1039 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1040 | return XFS_ERROR(EIO); | |
1041 | ||
a9185b41 | 1042 | if (wbc->sync_mode == WB_SYNC_ALL) { |
07fec736 | 1043 | /* |
7a36c8a9 CH |
1044 | * Make sure the inode has made it it into the log. Instead |
1045 | * of forcing it all the way to stable storage using a | |
1046 | * synchronous transaction we let the log force inside the | |
1047 | * ->sync_fs call do that for thus, which reduces the number | |
1048 | * of synchronous log foces dramatically. | |
07fec736 | 1049 | */ |
37bc5743 | 1050 | xfs_ioend_wait(ip); |
d4bb6d06 | 1051 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
07fec736 CH |
1052 | if (ip->i_update_core) { |
1053 | error = xfs_log_inode(ip); | |
1054 | if (error) | |
1055 | goto out_unlock; | |
1056 | } | |
d4bb6d06 | 1057 | } else { |
07fec736 CH |
1058 | /* |
1059 | * We make this non-blocking if the inode is contended, return | |
1060 | * EAGAIN to indicate to the caller that they did not succeed. | |
1061 | * This prevents the flush path from blocking on inodes inside | |
7a36c8a9 CH |
1062 | * another operation right now, they get caught later by |
1063 | * xfs_sync. | |
07fec736 | 1064 | */ |
d4bb6d06 CH |
1065 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
1066 | goto out; | |
07fec736 | 1067 | |
7a36c8a9 CH |
1068 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) |
1069 | goto out_unlock; | |
d4bb6d06 | 1070 | |
7a36c8a9 CH |
1071 | /* |
1072 | * Now we have the flush lock and the inode is not pinned, we | |
1073 | * can check if the inode is really clean as we know that | |
1074 | * there are no pending transaction completions, it is not | |
1075 | * waiting on the delayed write queue and there is no IO in | |
1076 | * progress. | |
1077 | */ | |
1078 | if (xfs_inode_clean(ip)) { | |
1079 | xfs_ifunlock(ip); | |
1080 | error = 0; | |
1081 | goto out_unlock; | |
1082 | } | |
1083 | error = xfs_iflush(ip, 0); | |
d4bb6d06 CH |
1084 | } |
1085 | ||
1086 | out_unlock: | |
1087 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1088 | out: | |
e893bffd LM |
1089 | /* |
1090 | * if we failed to write out the inode then mark | |
1091 | * it dirty again so we'll try again later. | |
1092 | */ | |
1093 | if (error) | |
2e656092 | 1094 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
1095 | return -error; |
1096 | } | |
1097 | ||
1098 | STATIC void | |
b57922d9 | 1099 | xfs_fs_evict_inode( |
1da177e4 LT |
1100 | struct inode *inode) |
1101 | { | |
1543d79c | 1102 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1103 | |
b57922d9 | 1104 | trace_xfs_evict_inode(ip); |
cca28fb8 | 1105 | |
b57922d9 AV |
1106 | truncate_inode_pages(&inode->i_data, 0); |
1107 | end_writeback(inode); | |
99fa8cb3 DC |
1108 | XFS_STATS_INC(vn_rele); |
1109 | XFS_STATS_INC(vn_remove); | |
1110 | XFS_STATS_DEC(vn_active); | |
1111 | ||
033da48f CH |
1112 | /* |
1113 | * The iolock is used by the file system to coordinate reads, | |
1114 | * writes, and block truncates. Up to this point the lock | |
1115 | * protected concurrent accesses by users of the inode. But | |
1116 | * from here forward we're doing some final processing of the | |
1117 | * inode because we're done with it, and although we reuse the | |
1118 | * iolock for protection it is really a distinct lock class | |
1119 | * (in the lockdep sense) from before. To keep lockdep happy | |
1120 | * (and basically indicate what we are doing), we explicitly | |
1121 | * re-init the iolock here. | |
1122 | */ | |
1123 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
1124 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
1125 | ||
99fa8cb3 | 1126 | xfs_inactive(ip); |
56d433e4 | 1127 | } |
1da177e4 | 1128 | |
a738159d CH |
1129 | STATIC void |
1130 | xfs_free_fsname( | |
1131 | struct xfs_mount *mp) | |
1132 | { | |
1133 | kfree(mp->m_fsname); | |
1134 | kfree(mp->m_rtname); | |
1135 | kfree(mp->m_logname); | |
1136 | } | |
1137 | ||
1da177e4 | 1138 | STATIC void |
a50cd269 | 1139 | xfs_fs_put_super( |
1da177e4 LT |
1140 | struct super_block *sb) |
1141 | { | |
745f6919 | 1142 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1143 | |
a4190f90 DC |
1144 | /* |
1145 | * Unregister the memory shrinker before we tear down the mount | |
1146 | * structure so we don't have memory reclaim racing with us here. | |
1147 | */ | |
1148 | xfs_inode_shrinker_unregister(mp); | |
a167b17e | 1149 | xfs_syncd_stop(mp); |
075fe102 | 1150 | |
e48ad316 CH |
1151 | /* |
1152 | * Blow away any referenced inode in the filestreams cache. | |
1153 | * This can and will cause log traffic as inodes go inactive | |
1154 | * here. | |
1155 | */ | |
1156 | xfs_filestream_unmount(mp); | |
1157 | ||
1158 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1159 | |
19f354d4 | 1160 | xfs_unmountfs(mp); |
6203300e | 1161 | xfs_freesb(mp); |
c962fb79 | 1162 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1163 | xfs_close_devices(mp); |
a738159d | 1164 | xfs_free_fsname(mp); |
c962fb79 | 1165 | kfree(mp); |
1da177e4 LT |
1166 | } |
1167 | ||
1da177e4 | 1168 | STATIC int |
69961a26 | 1169 | xfs_fs_sync_fs( |
1da177e4 LT |
1170 | struct super_block *sb, |
1171 | int wait) | |
1172 | { | |
745f6919 | 1173 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1174 | int error; |
1da177e4 | 1175 | |
e893bffd | 1176 | /* |
69961a26 CH |
1177 | * Not much we can do for the first async pass. Writing out the |
1178 | * superblock would be counter-productive as we are going to redirty | |
1179 | * when writing out other data and metadata (and writing out a single | |
1180 | * block is quite fast anyway). | |
1181 | * | |
1182 | * Try to asynchronously kick off quota syncing at least. | |
e893bffd | 1183 | */ |
69961a26 CH |
1184 | if (!wait) { |
1185 | xfs_qm_sync(mp, SYNC_TRYLOCK); | |
1186 | return 0; | |
1187 | } | |
1188 | ||
1189 | error = xfs_quiesce_data(mp); | |
1190 | if (error) | |
1191 | return -error; | |
1da177e4 | 1192 | |
69961a26 | 1193 | if (laptop_mode) { |
74394496 | 1194 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1195 | |
1196 | /* | |
1197 | * The disk must be active because we're syncing. | |
1198 | * We schedule xfssyncd now (now that the disk is | |
1199 | * active) instead of later (when it might not be). | |
1200 | */ | |
74394496 | 1201 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1202 | /* |
1203 | * We have to wait for the sync iteration to complete. | |
1204 | * If we don't, the disk activity caused by the sync | |
1205 | * will come after the sync is completed, and that | |
1206 | * triggers another sync from laptop mode. | |
1207 | */ | |
74394496 CH |
1208 | wait_event(mp->m_wait_single_sync_task, |
1209 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1210 | } |
1211 | ||
69961a26 | 1212 | return 0; |
1da177e4 LT |
1213 | } |
1214 | ||
1215 | STATIC int | |
a50cd269 | 1216 | xfs_fs_statfs( |
726c3342 | 1217 | struct dentry *dentry, |
1da177e4 LT |
1218 | struct kstatfs *statp) |
1219 | { | |
4ca488eb CH |
1220 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1221 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1222 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1223 | __uint64_t fakeinos, id; |
1224 | xfs_extlen_t lsize; | |
2fe33661 | 1225 | __int64_t ffree; |
4ca488eb CH |
1226 | |
1227 | statp->f_type = XFS_SB_MAGIC; | |
1228 | statp->f_namelen = MAXNAMELEN - 1; | |
1229 | ||
1230 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1231 | statp->f_fsid.val[0] = (u32)id; | |
1232 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1233 | ||
d4d90b57 | 1234 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1235 | |
1236 | spin_lock(&mp->m_sb_lock); | |
1237 | statp->f_bsize = sbp->sb_blocksize; | |
1238 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1239 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1240 | statp->f_bfree = statp->f_bavail = | |
1241 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1242 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1243 | statp->f_files = |
1244 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1245 | if (mp->m_maxicount) | |
a19d9f88 CH |
1246 | statp->f_files = min_t(typeof(statp->f_files), |
1247 | statp->f_files, | |
1248 | mp->m_maxicount); | |
2fe33661 SB |
1249 | |
1250 | /* make sure statp->f_ffree does not underflow */ | |
1251 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1252 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1253 | ||
4ca488eb CH |
1254 | spin_unlock(&mp->m_sb_lock); |
1255 | ||
7d095257 CH |
1256 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1257 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1258 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1259 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1260 | return 0; |
1da177e4 LT |
1261 | } |
1262 | ||
d5db0f97 ES |
1263 | STATIC void |
1264 | xfs_save_resvblks(struct xfs_mount *mp) | |
1265 | { | |
1266 | __uint64_t resblks = 0; | |
1267 | ||
1268 | mp->m_resblks_save = mp->m_resblks; | |
1269 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1270 | } | |
1271 | ||
1272 | STATIC void | |
1273 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1274 | { | |
1275 | __uint64_t resblks; | |
1276 | ||
1277 | if (mp->m_resblks_save) { | |
1278 | resblks = mp->m_resblks_save; | |
1279 | mp->m_resblks_save = 0; | |
1280 | } else | |
1281 | resblks = xfs_default_resblks(mp); | |
1282 | ||
1283 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1284 | } | |
1285 | ||
1da177e4 | 1286 | STATIC int |
a50cd269 | 1287 | xfs_fs_remount( |
1da177e4 LT |
1288 | struct super_block *sb, |
1289 | int *flags, | |
1290 | char *options) | |
1291 | { | |
745f6919 | 1292 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1293 | substring_t args[MAX_OPT_ARGS]; |
1294 | char *p; | |
7884bc86 | 1295 | int error; |
1da177e4 | 1296 | |
62a877e3 CH |
1297 | while ((p = strsep(&options, ",")) != NULL) { |
1298 | int token; | |
bdd907ba | 1299 | |
62a877e3 CH |
1300 | if (!*p) |
1301 | continue; | |
48b62a1a | 1302 | |
62a877e3 CH |
1303 | token = match_token(p, tokens, args); |
1304 | switch (token) { | |
1305 | case Opt_barrier: | |
48b62a1a | 1306 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1307 | |
1308 | /* | |
1309 | * Test if barriers are actually working if we can, | |
1310 | * else delay this check until the filesystem is | |
1311 | * marked writeable. | |
1312 | */ | |
1313 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) | |
1314 | xfs_mountfs_check_barriers(mp); | |
1315 | break; | |
1316 | case Opt_nobarrier: | |
48b62a1a | 1317 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1318 | break; |
1319 | default: | |
6efdf281 CH |
1320 | /* |
1321 | * Logically we would return an error here to prevent | |
1322 | * users from believing they might have changed | |
1323 | * mount options using remount which can't be changed. | |
1324 | * | |
1325 | * But unfortunately mount(8) adds all options from | |
1326 | * mtab and fstab to the mount arguments in some cases | |
1327 | * so we can't blindly reject options, but have to | |
1328 | * check for each specified option if it actually | |
1329 | * differs from the currently set option and only | |
1330 | * reject it if that's the case. | |
1331 | * | |
1332 | * Until that is implemented we return success for | |
1333 | * every remount request, and silently ignore all | |
1334 | * options that we can't actually change. | |
1335 | */ | |
1336 | #if 0 | |
62a877e3 CH |
1337 | printk(KERN_INFO |
1338 | "XFS: mount option \"%s\" not supported for remount\n", p); | |
1339 | return -EINVAL; | |
6efdf281 | 1340 | #else |
6c5e51da | 1341 | break; |
6efdf281 | 1342 | #endif |
48b62a1a | 1343 | } |
62a877e3 CH |
1344 | } |
1345 | ||
7884bc86 | 1346 | /* ro -> rw */ |
62a877e3 CH |
1347 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1348 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
1349 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1350 | xfs_mountfs_check_barriers(mp); | |
7884bc86 CH |
1351 | |
1352 | /* | |
1353 | * If this is the first remount to writeable state we | |
1354 | * might have some superblock changes to update. | |
1355 | */ | |
1356 | if (mp->m_update_flags) { | |
1357 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1358 | if (error) { | |
1359 | cmn_err(CE_WARN, | |
1360 | "XFS: failed to write sb changes"); | |
1361 | return error; | |
1362 | } | |
1363 | mp->m_update_flags = 0; | |
1364 | } | |
cbe132a8 DC |
1365 | |
1366 | /* | |
1367 | * Fill out the reserve pool if it is empty. Use the stashed | |
1368 | * value if it is non-zero, otherwise go with the default. | |
1369 | */ | |
d5db0f97 | 1370 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1371 | } |
1372 | ||
1373 | /* rw -> ro */ | |
1374 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1375 | /* |
1376 | * After we have synced the data but before we sync the | |
1377 | * metadata, we need to free up the reserve block pool so that | |
1378 | * the used block count in the superblock on disk is correct at | |
1379 | * the end of the remount. Stash the current reserve pool size | |
1380 | * so that if we get remounted rw, we can return it to the same | |
1381 | * size. | |
1382 | */ | |
cbe132a8 | 1383 | |
e9f1c6ee | 1384 | xfs_quiesce_data(mp); |
d5db0f97 | 1385 | xfs_save_resvblks(mp); |
76bf105c | 1386 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1387 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1388 | } | |
1389 | ||
62a877e3 | 1390 | return 0; |
1da177e4 LT |
1391 | } |
1392 | ||
9909c4aa CH |
1393 | /* |
1394 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1395 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1396 | * record to dirty the log in case of a crash while frozen. |
1397 | */ | |
c4be0c1d TS |
1398 | STATIC int |
1399 | xfs_fs_freeze( | |
1da177e4 LT |
1400 | struct super_block *sb) |
1401 | { | |
9909c4aa CH |
1402 | struct xfs_mount *mp = XFS_M(sb); |
1403 | ||
d5db0f97 | 1404 | xfs_save_resvblks(mp); |
76bf105c | 1405 | xfs_quiesce_attr(mp); |
1a387d3b | 1406 | return -xfs_fs_log_dummy(mp, SYNC_WAIT); |
1da177e4 LT |
1407 | } |
1408 | ||
d5db0f97 ES |
1409 | STATIC int |
1410 | xfs_fs_unfreeze( | |
1411 | struct super_block *sb) | |
1412 | { | |
1413 | struct xfs_mount *mp = XFS_M(sb); | |
1414 | ||
1415 | xfs_restore_resvblks(mp); | |
1416 | return 0; | |
1417 | } | |
1418 | ||
1da177e4 | 1419 | STATIC int |
a50cd269 | 1420 | xfs_fs_show_options( |
1da177e4 LT |
1421 | struct seq_file *m, |
1422 | struct vfsmount *mnt) | |
1423 | { | |
745f6919 | 1424 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1425 | } |
1426 | ||
f8f15e42 CH |
1427 | /* |
1428 | * This function fills in xfs_mount_t fields based on mount args. | |
1429 | * Note: the superblock _has_ now been read in. | |
1430 | */ | |
1431 | STATIC int | |
1432 | xfs_finish_flags( | |
f8f15e42 CH |
1433 | struct xfs_mount *mp) |
1434 | { | |
1435 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1436 | ||
025dfdaf | 1437 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1438 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1439 | if (mp->m_logbsize <= 0 && |
1440 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1441 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1442 | } else if (mp->m_logbsize > 0 && |
1443 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
f8f15e42 CH |
1444 | cmn_err(CE_WARN, |
1445 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
1446 | return XFS_ERROR(EINVAL); | |
1447 | } | |
1448 | } else { | |
1449 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1450 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
f8f15e42 CH |
1451 | cmn_err(CE_WARN, |
1452 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
1453 | return XFS_ERROR(EINVAL); | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | /* | |
1458 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1459 | * told by noattr2 to turn it off | |
1460 | */ | |
1461 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1462 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1463 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1464 | ||
1465 | /* | |
1466 | * prohibit r/w mounts of read-only filesystems | |
1467 | */ | |
1468 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
1469 | cmn_err(CE_WARN, | |
1470 | "XFS: cannot mount a read-only filesystem as read-write"); | |
1471 | return XFS_ERROR(EROFS); | |
1472 | } | |
1473 | ||
f8f15e42 CH |
1474 | return 0; |
1475 | } | |
1476 | ||
1da177e4 | 1477 | STATIC int |
a50cd269 | 1478 | xfs_fs_fill_super( |
1da177e4 LT |
1479 | struct super_block *sb, |
1480 | void *data, | |
1481 | int silent) | |
1482 | { | |
f3dcc13f | 1483 | struct inode *root; |
745f6919 | 1484 | struct xfs_mount *mp = NULL; |
c962fb79 | 1485 | int flags = 0, error = ENOMEM; |
bdd907ba | 1486 | |
c962fb79 CH |
1487 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1488 | if (!mp) | |
9d565ffa | 1489 | goto out; |
1da177e4 | 1490 | |
c962fb79 | 1491 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1492 | mutex_init(&mp->m_growlock); |
1493 | atomic_set(&mp->m_active_trans, 0); | |
74394496 CH |
1494 | INIT_LIST_HEAD(&mp->m_sync_list); |
1495 | spin_lock_init(&mp->m_sync_lock); | |
1496 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1497 | ||
b267ce99 CH |
1498 | mp->m_super = sb; |
1499 | sb->s_fs_info = mp; | |
1da177e4 | 1500 | |
288699fe | 1501 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1502 | if (error) |
9d565ffa | 1503 | goto out_free_fsname; |
1da177e4 LT |
1504 | |
1505 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1506 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1507 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1508 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1509 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1510 | #endif |
a50cd269 | 1511 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1512 | |
9d565ffa | 1513 | if (silent) |
f8f15e42 CH |
1514 | flags |= XFS_MFSI_QUIET; |
1515 | ||
9d565ffa | 1516 | error = xfs_open_devices(mp); |
19f354d4 | 1517 | if (error) |
288699fe | 1518 | goto out_free_fsname; |
f8f15e42 | 1519 | |
61ba35de CH |
1520 | error = xfs_icsb_init_counters(mp); |
1521 | if (error) | |
1522 | goto out_close_devices; | |
c962fb79 | 1523 | |
f8f15e42 CH |
1524 | error = xfs_readsb(mp, flags); |
1525 | if (error) | |
9d565ffa CH |
1526 | goto out_destroy_counters; |
1527 | ||
1528 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1529 | if (error) |
effa2eda | 1530 | goto out_free_sb; |
f8f15e42 | 1531 | |
e34b562c | 1532 | error = xfs_setup_devices(mp); |
19f354d4 | 1533 | if (error) |
effa2eda | 1534 | goto out_free_sb; |
f8f15e42 CH |
1535 | |
1536 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1537 | xfs_mountfs_check_barriers(mp); | |
1538 | ||
1539 | error = xfs_filestream_mount(mp); | |
1540 | if (error) | |
effa2eda | 1541 | goto out_free_sb; |
f8f15e42 | 1542 | |
4249023a | 1543 | error = xfs_mountfs(mp); |
f8f15e42 | 1544 | if (error) |
120226c1 | 1545 | goto out_filestream_unmount; |
f8f15e42 | 1546 | |
4ca488eb CH |
1547 | sb->s_magic = XFS_SB_MAGIC; |
1548 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1549 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1550 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1551 | sb->s_time_gran = 1; | |
1552 | set_posix_acl_flag(sb); | |
1553 | ||
01651646 | 1554 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1555 | if (!root) { |
cbc89dcf | 1556 | error = ENOENT; |
1da177e4 | 1557 | goto fail_unmount; |
cbc89dcf | 1558 | } |
f3dcc13f CH |
1559 | if (is_bad_inode(root)) { |
1560 | error = EINVAL; | |
1da177e4 LT |
1561 | goto fail_vnrele; |
1562 | } | |
f3dcc13f CH |
1563 | sb->s_root = d_alloc_root(root); |
1564 | if (!sb->s_root) { | |
1565 | error = ENOMEM; | |
1da177e4 LT |
1566 | goto fail_vnrele; |
1567 | } | |
74394496 | 1568 | |
a167b17e DC |
1569 | error = xfs_syncd_init(mp); |
1570 | if (error) | |
1da177e4 | 1571 | goto fail_vnrele; |
74394496 | 1572 | |
9bf729c0 DC |
1573 | xfs_inode_shrinker_register(mp); |
1574 | ||
1da177e4 LT |
1575 | return 0; |
1576 | ||
120226c1 CH |
1577 | out_filestream_unmount: |
1578 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1579 | out_free_sb: |
1580 | xfs_freesb(mp); | |
9d565ffa | 1581 | out_destroy_counters: |
c962fb79 | 1582 | xfs_icsb_destroy_counters(mp); |
61ba35de | 1583 | out_close_devices: |
19f354d4 | 1584 | xfs_close_devices(mp); |
9d565ffa CH |
1585 | out_free_fsname: |
1586 | xfs_free_fsname(mp); | |
c962fb79 | 1587 | kfree(mp); |
9d565ffa | 1588 | out: |
c962fb79 | 1589 | return -error; |
f8f15e42 CH |
1590 | |
1591 | fail_vnrele: | |
1da177e4 LT |
1592 | if (sb->s_root) { |
1593 | dput(sb->s_root); | |
1594 | sb->s_root = NULL; | |
1595 | } else { | |
f3dcc13f | 1596 | iput(root); |
1da177e4 LT |
1597 | } |
1598 | ||
f8f15e42 | 1599 | fail_unmount: |
e48ad316 CH |
1600 | /* |
1601 | * Blow away any referenced inode in the filestreams cache. | |
1602 | * This can and will cause log traffic as inodes go inactive | |
1603 | * here. | |
1604 | */ | |
1605 | xfs_filestream_unmount(mp); | |
1606 | ||
1607 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1608 | |
19f354d4 | 1609 | xfs_unmountfs(mp); |
6203300e | 1610 | goto out_free_sb; |
1da177e4 LT |
1611 | } |
1612 | ||
454e2398 | 1613 | STATIC int |
a50cd269 | 1614 | xfs_fs_get_sb( |
1da177e4 LT |
1615 | struct file_system_type *fs_type, |
1616 | int flags, | |
1617 | const char *dev_name, | |
454e2398 DH |
1618 | void *data, |
1619 | struct vfsmount *mnt) | |
1da177e4 | 1620 | { |
454e2398 DH |
1621 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
1622 | mnt); | |
a50cd269 NS |
1623 | } |
1624 | ||
b87221de | 1625 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1626 | .alloc_inode = xfs_fs_alloc_inode, |
1627 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1628 | .dirty_inode = xfs_fs_dirty_inode, |
a50cd269 | 1629 | .write_inode = xfs_fs_write_inode, |
b57922d9 | 1630 | .evict_inode = xfs_fs_evict_inode, |
a50cd269 | 1631 | .put_super = xfs_fs_put_super, |
69961a26 | 1632 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1633 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1634 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1635 | .statfs = xfs_fs_statfs, |
1636 | .remount_fs = xfs_fs_remount, | |
1637 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1638 | }; |
1639 | ||
5085b607 | 1640 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1641 | .owner = THIS_MODULE, |
1642 | .name = "xfs", | |
a50cd269 | 1643 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
1644 | .kill_sb = kill_block_super, |
1645 | .fs_flags = FS_REQUIRES_DEV, | |
1646 | }; | |
1647 | ||
9f8868ff CH |
1648 | STATIC int __init |
1649 | xfs_init_zones(void) | |
1650 | { | |
9f8868ff CH |
1651 | |
1652 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1653 | if (!xfs_ioend_zone) | |
bf904248 | 1654 | goto out; |
9f8868ff CH |
1655 | |
1656 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1657 | xfs_ioend_zone); | |
1658 | if (!xfs_ioend_pool) | |
1659 | goto out_destroy_ioend_zone; | |
1660 | ||
1661 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1662 | "xfs_log_ticket"); | |
1663 | if (!xfs_log_ticket_zone) | |
1664 | goto out_destroy_ioend_pool; | |
1665 | ||
1666 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1667 | "xfs_bmap_free_item"); | |
1668 | if (!xfs_bmap_free_item_zone) | |
1669 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1670 | |
9f8868ff CH |
1671 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1672 | "xfs_btree_cur"); | |
1673 | if (!xfs_btree_cur_zone) | |
1674 | goto out_destroy_bmap_free_item_zone; | |
1675 | ||
1676 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1677 | "xfs_da_state"); | |
1678 | if (!xfs_da_state_zone) | |
1679 | goto out_destroy_btree_cur_zone; | |
1680 | ||
1681 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1682 | if (!xfs_dabuf_zone) | |
1683 | goto out_destroy_da_state_zone; | |
1684 | ||
1685 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1686 | if (!xfs_ifork_zone) | |
1687 | goto out_destroy_dabuf_zone; | |
1688 | ||
1689 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1690 | if (!xfs_trans_zone) | |
1691 | goto out_destroy_ifork_zone; | |
1692 | ||
e98c414f CH |
1693 | xfs_log_item_desc_zone = |
1694 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1695 | "xfs_log_item_desc"); | |
1696 | if (!xfs_log_item_desc_zone) | |
1697 | goto out_destroy_trans_zone; | |
1698 | ||
9f8868ff CH |
1699 | /* |
1700 | * The size of the zone allocated buf log item is the maximum | |
1701 | * size possible under XFS. This wastes a little bit of memory, | |
1702 | * but it is much faster. | |
1703 | */ | |
1704 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
c1155410 | 1705 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
9f8868ff CH |
1706 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
1707 | if (!xfs_buf_item_zone) | |
e98c414f | 1708 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1709 | |
1710 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1711 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1712 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1713 | if (!xfs_efd_zone) | |
1714 | goto out_destroy_buf_item_zone; | |
1715 | ||
1716 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1717 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1718 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1719 | if (!xfs_efi_zone) | |
1720 | goto out_destroy_efd_zone; | |
1721 | ||
1722 | xfs_inode_zone = | |
1723 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1724 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1725 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1726 | if (!xfs_inode_zone) |
1727 | goto out_destroy_efi_zone; | |
1728 | ||
1729 | xfs_ili_zone = | |
1730 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1731 | KM_ZONE_SPREAD, NULL); | |
1732 | if (!xfs_ili_zone) | |
1733 | goto out_destroy_inode_zone; | |
1734 | ||
9f8868ff CH |
1735 | return 0; |
1736 | ||
9f8868ff CH |
1737 | out_destroy_inode_zone: |
1738 | kmem_zone_destroy(xfs_inode_zone); | |
1739 | out_destroy_efi_zone: | |
1740 | kmem_zone_destroy(xfs_efi_zone); | |
1741 | out_destroy_efd_zone: | |
1742 | kmem_zone_destroy(xfs_efd_zone); | |
1743 | out_destroy_buf_item_zone: | |
1744 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1745 | out_destroy_log_item_desc_zone: |
1746 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1747 | out_destroy_trans_zone: |
1748 | kmem_zone_destroy(xfs_trans_zone); | |
1749 | out_destroy_ifork_zone: | |
1750 | kmem_zone_destroy(xfs_ifork_zone); | |
1751 | out_destroy_dabuf_zone: | |
1752 | kmem_zone_destroy(xfs_dabuf_zone); | |
1753 | out_destroy_da_state_zone: | |
1754 | kmem_zone_destroy(xfs_da_state_zone); | |
1755 | out_destroy_btree_cur_zone: | |
1756 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1757 | out_destroy_bmap_free_item_zone: | |
1758 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1759 | out_destroy_log_ticket_zone: | |
1760 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1761 | out_destroy_ioend_pool: | |
1762 | mempool_destroy(xfs_ioend_pool); | |
1763 | out_destroy_ioend_zone: | |
1764 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1765 | out: |
1766 | return -ENOMEM; | |
1767 | } | |
1768 | ||
1769 | STATIC void | |
1770 | xfs_destroy_zones(void) | |
1771 | { | |
9f8868ff CH |
1772 | kmem_zone_destroy(xfs_ili_zone); |
1773 | kmem_zone_destroy(xfs_inode_zone); | |
1774 | kmem_zone_destroy(xfs_efi_zone); | |
1775 | kmem_zone_destroy(xfs_efd_zone); | |
1776 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1777 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1778 | kmem_zone_destroy(xfs_trans_zone); |
1779 | kmem_zone_destroy(xfs_ifork_zone); | |
1780 | kmem_zone_destroy(xfs_dabuf_zone); | |
1781 | kmem_zone_destroy(xfs_da_state_zone); | |
1782 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1783 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1784 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1785 | mempool_destroy(xfs_ioend_pool); | |
1786 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1787 | |
1788 | } | |
1da177e4 LT |
1789 | |
1790 | STATIC int __init | |
9f8868ff | 1791 | init_xfs_fs(void) |
1da177e4 LT |
1792 | { |
1793 | int error; | |
1da177e4 | 1794 | |
65795910 CH |
1795 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1796 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1797 | |
25e41b3d | 1798 | xfs_ioend_init(); |
9f8868ff | 1799 | xfs_dir_startup(); |
1da177e4 | 1800 | |
8758280f | 1801 | error = xfs_init_zones(); |
9f8868ff CH |
1802 | if (error) |
1803 | goto out; | |
1804 | ||
9f8868ff CH |
1805 | error = xfs_mru_cache_init(); |
1806 | if (error) | |
0b1b213f | 1807 | goto out_destroy_zones; |
9f8868ff CH |
1808 | |
1809 | error = xfs_filestream_init(); | |
1810 | if (error) | |
1811 | goto out_mru_cache_uninit; | |
1da177e4 | 1812 | |
ce8e922c | 1813 | error = xfs_buf_init(); |
9f8868ff CH |
1814 | if (error) |
1815 | goto out_filestream_uninit; | |
1816 | ||
1817 | error = xfs_init_procfs(); | |
1818 | if (error) | |
1819 | goto out_buf_terminate; | |
1820 | ||
1821 | error = xfs_sysctl_register(); | |
1822 | if (error) | |
1823 | goto out_cleanup_procfs; | |
1da177e4 | 1824 | |
1da177e4 LT |
1825 | vfs_initquota(); |
1826 | ||
1827 | error = register_filesystem(&xfs_fs_type); | |
1828 | if (error) | |
9f8868ff | 1829 | goto out_sysctl_unregister; |
1da177e4 LT |
1830 | return 0; |
1831 | ||
9f8868ff CH |
1832 | out_sysctl_unregister: |
1833 | xfs_sysctl_unregister(); | |
1834 | out_cleanup_procfs: | |
1835 | xfs_cleanup_procfs(); | |
1836 | out_buf_terminate: | |
ce8e922c | 1837 | xfs_buf_terminate(); |
9f8868ff CH |
1838 | out_filestream_uninit: |
1839 | xfs_filestream_uninit(); | |
1840 | out_mru_cache_uninit: | |
1841 | xfs_mru_cache_uninit(); | |
9f8868ff | 1842 | out_destroy_zones: |
8758280f | 1843 | xfs_destroy_zones(); |
9f8868ff | 1844 | out: |
1da177e4 LT |
1845 | return error; |
1846 | } | |
1847 | ||
1848 | STATIC void __exit | |
9f8868ff | 1849 | exit_xfs_fs(void) |
1da177e4 LT |
1850 | { |
1851 | vfs_exitquota(); | |
1da177e4 | 1852 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1853 | xfs_sysctl_unregister(); |
1854 | xfs_cleanup_procfs(); | |
ce8e922c | 1855 | xfs_buf_terminate(); |
9f8868ff CH |
1856 | xfs_filestream_uninit(); |
1857 | xfs_mru_cache_uninit(); | |
8758280f | 1858 | xfs_destroy_zones(); |
1da177e4 LT |
1859 | } |
1860 | ||
1861 | module_init(init_xfs_fs); | |
1862 | module_exit(exit_xfs_fs); | |
1863 | ||
1864 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1865 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1866 | MODULE_LICENSE("GPL"); |