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1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_bit.h" |
1da177e4 | 20 | #include "xfs_log.h" |
a844f451 | 21 | #include "xfs_inum.h" |
1da177e4 LT |
22 | #include "xfs_trans.h" |
23 | #include "xfs_sb.h" | |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 LT |
25 | #include "xfs_dir2.h" |
26 | #include "xfs_alloc.h" | |
27 | #include "xfs_dmapi.h" | |
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 | 33 | #include "xfs_dir2_sf.h" |
a844f451 | 34 | #include "xfs_attr_sf.h" |
1da177e4 LT |
35 | #include "xfs_dinode.h" |
36 | #include "xfs_inode.h" | |
a844f451 | 37 | #include "xfs_btree.h" |
8c4ed633 | 38 | #include "xfs_btree_trace.h" |
a844f451 | 39 | #include "xfs_ialloc.h" |
1da177e4 | 40 | #include "xfs_bmap.h" |
1da177e4 LT |
41 | #include "xfs_rtalloc.h" |
42 | #include "xfs_error.h" | |
43 | #include "xfs_itable.h" | |
9909c4aa | 44 | #include "xfs_fsops.h" |
1da177e4 | 45 | #include "xfs_rw.h" |
1da177e4 LT |
46 | #include "xfs_attr.h" |
47 | #include "xfs_buf_item.h" | |
48 | #include "xfs_utils.h" | |
739bfb2a | 49 | #include "xfs_vnodeops.h" |
1da177e4 | 50 | #include "xfs_version.h" |
a67d7c5f | 51 | #include "xfs_log_priv.h" |
249a8c11 | 52 | #include "xfs_trans_priv.h" |
48b62a1a | 53 | #include "xfs_filestream.h" |
9f8868ff CH |
54 | #include "xfs_da_btree.h" |
55 | #include "xfs_dir2_trace.h" | |
56 | #include "xfs_extfree_item.h" | |
57 | #include "xfs_mru_cache.h" | |
58 | #include "xfs_inode_item.h" | |
fe4fa4b8 | 59 | #include "xfs_sync.h" |
1da177e4 LT |
60 | |
61 | #include <linux/namei.h> | |
62 | #include <linux/init.h> | |
63 | #include <linux/mount.h> | |
0829c360 | 64 | #include <linux/mempool.h> |
1da177e4 | 65 | #include <linux/writeback.h> |
4df08c52 | 66 | #include <linux/kthread.h> |
7dfb7103 | 67 | #include <linux/freezer.h> |
62a877e3 | 68 | #include <linux/parser.h> |
1da177e4 | 69 | |
7989cb8e | 70 | static struct super_operations xfs_super_operations; |
7989cb8e | 71 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 72 | mempool_t *xfs_ioend_pool; |
1da177e4 | 73 | |
a67d7c5f DC |
74 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
75 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
76 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
77 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
78 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
79 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
80 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
81 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
82 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
83 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
84 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
85 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
86 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
87 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
88 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
89 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
90 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
91 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
92 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
93 | * unwritten extent conversion */ | |
94 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
95 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ | |
96 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ | |
97 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
98 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
99 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
100 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
101 | * in stat(). */ | |
102 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
103 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
104 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
105 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
106 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
107 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
108 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
109 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
110 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
111 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
112 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
113 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
114 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
115 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
116 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
117 | #define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */ | |
118 | #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */ | |
119 | #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */ | |
120 | ||
62a877e3 CH |
121 | /* |
122 | * Table driven mount option parser. | |
123 | * | |
124 | * Currently only used for remount, but it will be used for mount | |
125 | * in the future, too. | |
126 | */ | |
127 | enum { | |
128 | Opt_barrier, Opt_nobarrier, Opt_err | |
129 | }; | |
130 | ||
a447c093 | 131 | static const match_table_t tokens = { |
62a877e3 CH |
132 | {Opt_barrier, "barrier"}, |
133 | {Opt_nobarrier, "nobarrier"}, | |
134 | {Opt_err, NULL} | |
135 | }; | |
136 | ||
137 | ||
a67d7c5f DC |
138 | STATIC unsigned long |
139 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
140 | { | |
141 | int last, shift_left_factor = 0; | |
142 | char *value = s; | |
143 | ||
144 | last = strlen(value) - 1; | |
145 | if (value[last] == 'K' || value[last] == 'k') { | |
146 | shift_left_factor = 10; | |
147 | value[last] = '\0'; | |
148 | } | |
149 | if (value[last] == 'M' || value[last] == 'm') { | |
150 | shift_left_factor = 20; | |
151 | value[last] = '\0'; | |
152 | } | |
153 | if (value[last] == 'G' || value[last] == 'g') { | |
154 | shift_left_factor = 30; | |
155 | value[last] = '\0'; | |
156 | } | |
157 | ||
158 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
159 | } | |
160 | ||
9d565ffa CH |
161 | /* |
162 | * This function fills in xfs_mount_t fields based on mount args. | |
163 | * Note: the superblock has _not_ yet been read in. | |
164 | * | |
165 | * Note that this function leaks the various device name allocations on | |
166 | * failure. The caller takes care of them. | |
167 | */ | |
a67d7c5f DC |
168 | STATIC int |
169 | xfs_parseargs( | |
170 | struct xfs_mount *mp, | |
171 | char *options, | |
9d565ffa | 172 | char **mtpt) |
a67d7c5f | 173 | { |
9d565ffa | 174 | struct super_block *sb = mp->m_super; |
a67d7c5f | 175 | char *this_char, *value, *eov; |
9d565ffa CH |
176 | int dsunit = 0; |
177 | int dswidth = 0; | |
178 | int iosize = 0; | |
1bd960ee | 179 | int dmapi_implies_ikeep = 1; |
a5687787 | 180 | __uint8_t iosizelog = 0; |
9d565ffa CH |
181 | |
182 | /* | |
183 | * Copy binary VFS mount flags we are interested in. | |
184 | */ | |
185 | if (sb->s_flags & MS_RDONLY) | |
186 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
187 | if (sb->s_flags & MS_DIRSYNC) | |
188 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
189 | if (sb->s_flags & MS_SYNCHRONOUS) | |
190 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
191 | ||
192 | /* | |
193 | * Set some default flags that could be cleared by the mount option | |
194 | * parsing. | |
195 | */ | |
196 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
197 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
198 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 199 | |
9d565ffa CH |
200 | /* |
201 | * These can be overridden by the mount option parsing. | |
202 | */ | |
203 | mp->m_logbufs = -1; | |
204 | mp->m_logbsize = -1; | |
a67d7c5f DC |
205 | |
206 | if (!options) | |
207 | goto done; | |
208 | ||
a67d7c5f DC |
209 | while ((this_char = strsep(&options, ",")) != NULL) { |
210 | if (!*this_char) | |
211 | continue; | |
212 | if ((value = strchr(this_char, '=')) != NULL) | |
213 | *value++ = 0; | |
214 | ||
215 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
216 | if (!value || !*value) { | |
217 | cmn_err(CE_WARN, | |
218 | "XFS: %s option requires an argument", | |
219 | this_char); | |
220 | return EINVAL; | |
221 | } | |
9d565ffa | 222 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
223 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
224 | if (!value || !*value) { | |
225 | cmn_err(CE_WARN, | |
226 | "XFS: %s option requires an argument", | |
227 | this_char); | |
228 | return EINVAL; | |
229 | } | |
9d565ffa | 230 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
231 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
232 | if (!value || !*value) { | |
233 | cmn_err(CE_WARN, | |
234 | "XFS: %s option requires an argument", | |
235 | this_char); | |
236 | return EINVAL; | |
237 | } | |
9d565ffa CH |
238 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
239 | if (!mp->m_logname) | |
240 | return ENOMEM; | |
a67d7c5f DC |
241 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
242 | if (!value || !*value) { | |
243 | cmn_err(CE_WARN, | |
244 | "XFS: %s option requires an argument", | |
245 | this_char); | |
246 | return EINVAL; | |
247 | } | |
9d565ffa CH |
248 | *mtpt = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
249 | if (!*mtpt) | |
250 | return ENOMEM; | |
a67d7c5f DC |
251 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
252 | if (!value || !*value) { | |
253 | cmn_err(CE_WARN, | |
254 | "XFS: %s option requires an argument", | |
255 | this_char); | |
256 | return EINVAL; | |
257 | } | |
9d565ffa CH |
258 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
259 | if (!mp->m_rtname) | |
260 | return ENOMEM; | |
a67d7c5f DC |
261 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
262 | if (!value || !*value) { | |
263 | cmn_err(CE_WARN, | |
264 | "XFS: %s option requires an argument", | |
265 | this_char); | |
266 | return EINVAL; | |
267 | } | |
268 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 269 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
270 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
271 | if (!value || !*value) { | |
272 | cmn_err(CE_WARN, | |
273 | "XFS: %s option requires an argument", | |
274 | this_char); | |
275 | return EINVAL; | |
276 | } | |
277 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 278 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
279 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
280 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
281 | mp->m_flags |= XFS_MOUNT_GRPID; | |
282 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
283 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
284 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
285 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 286 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 287 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { |
9d565ffa | 288 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; |
a67d7c5f | 289 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 290 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 291 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 292 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 293 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 294 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
295 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
296 | if (!value || !*value) { | |
297 | cmn_err(CE_WARN, | |
298 | "XFS: %s option requires an argument", | |
299 | this_char); | |
300 | return EINVAL; | |
301 | } | |
302 | dsunit = simple_strtoul(value, &eov, 10); | |
303 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
304 | if (!value || !*value) { | |
305 | cmn_err(CE_WARN, | |
306 | "XFS: %s option requires an argument", | |
307 | this_char); | |
308 | return EINVAL; | |
309 | } | |
310 | dswidth = simple_strtoul(value, &eov, 10); | |
311 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
9d565ffa | 312 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f DC |
313 | #if !XFS_BIG_INUMS |
314 | cmn_err(CE_WARN, | |
315 | "XFS: %s option not allowed on this system", | |
316 | this_char); | |
317 | return EINVAL; | |
318 | #endif | |
319 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 320 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 321 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 322 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 323 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 324 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 325 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 326 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 327 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
1bd960ee | 328 | dmapi_implies_ikeep = 0; |
9d565ffa | 329 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 331 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 332 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 333 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 334 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 335 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 336 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
337 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
338 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 339 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 340 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 341 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
9d565ffa CH |
342 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
343 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | | |
469fc23d | 344 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
9d565ffa | 345 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
a67d7c5f DC |
346 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
347 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
348 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
349 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
350 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
351 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
352 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
353 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
354 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
355 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
356 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
357 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
358 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 359 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
360 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
361 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
362 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
363 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
364 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
365 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 366 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
367 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
368 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f | 369 | } else if (!strcmp(this_char, MNTOPT_DMAPI)) { |
9d565ffa | 370 | mp->m_flags |= XFS_MOUNT_DMAPI; |
a67d7c5f | 371 | } else if (!strcmp(this_char, MNTOPT_XDSM)) { |
9d565ffa | 372 | mp->m_flags |= XFS_MOUNT_DMAPI; |
a67d7c5f | 373 | } else if (!strcmp(this_char, MNTOPT_DMI)) { |
9d565ffa | 374 | mp->m_flags |= XFS_MOUNT_DMAPI; |
a67d7c5f DC |
375 | } else if (!strcmp(this_char, "ihashsize")) { |
376 | cmn_err(CE_WARN, | |
377 | "XFS: ihashsize no longer used, option is deprecated."); | |
378 | } else if (!strcmp(this_char, "osyncisdsync")) { | |
379 | /* no-op, this is now the default */ | |
380 | cmn_err(CE_WARN, | |
381 | "XFS: osyncisdsync is now the default, option is deprecated."); | |
382 | } else if (!strcmp(this_char, "irixsgid")) { | |
383 | cmn_err(CE_WARN, | |
384 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
385 | } else { | |
386 | cmn_err(CE_WARN, | |
387 | "XFS: unknown mount option [%s].", this_char); | |
388 | return EINVAL; | |
389 | } | |
390 | } | |
391 | ||
9d565ffa CH |
392 | /* |
393 | * no recovery flag requires a read-only mount | |
394 | */ | |
395 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
396 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
397 | cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); | |
398 | return EINVAL; | |
a67d7c5f DC |
399 | } |
400 | ||
9d565ffa | 401 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
a67d7c5f DC |
402 | cmn_err(CE_WARN, |
403 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
404 | return EINVAL; | |
405 | } | |
406 | ||
7d095257 CH |
407 | #ifndef CONFIG_XFS_QUOTA |
408 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
409 | cmn_err(CE_WARN, | |
410 | "XFS: quota support not available in this kernel."); | |
411 | return EINVAL; | |
412 | } | |
413 | #endif | |
414 | ||
9d565ffa CH |
415 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
416 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
a67d7c5f DC |
417 | cmn_err(CE_WARN, |
418 | "XFS: cannot mount with both project and group quota"); | |
419 | return EINVAL; | |
420 | } | |
421 | ||
9d565ffa | 422 | if ((mp->m_flags & XFS_MOUNT_DMAPI) && (!*mtpt || *mtpt[0] == '\0')) { |
a67d7c5f DC |
423 | printk("XFS: %s option needs the mount point option as well\n", |
424 | MNTOPT_DMAPI); | |
425 | return EINVAL; | |
426 | } | |
427 | ||
428 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { | |
429 | cmn_err(CE_WARN, | |
430 | "XFS: sunit and swidth must be specified together"); | |
431 | return EINVAL; | |
432 | } | |
433 | ||
434 | if (dsunit && (dswidth % dsunit != 0)) { | |
435 | cmn_err(CE_WARN, | |
436 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
437 | dswidth, dsunit); | |
438 | return EINVAL; | |
439 | } | |
440 | ||
441 | /* | |
442 | * Applications using DMI filesystems often expect the | |
443 | * inode generation number to be monotonically increasing. | |
444 | * If we delete inode chunks we break this assumption, so | |
445 | * keep unused inode chunks on disk for DMI filesystems | |
446 | * until we come up with a better solution. | |
447 | * Note that if "ikeep" or "noikeep" mount options are | |
448 | * supplied, then they are honored. | |
449 | */ | |
9d565ffa CH |
450 | if ((mp->m_flags & XFS_MOUNT_DMAPI) && dmapi_implies_ikeep) |
451 | mp->m_flags |= XFS_MOUNT_IKEEP; | |
a67d7c5f | 452 | |
9d565ffa CH |
453 | done: |
454 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
455 | /* | |
456 | * At this point the superblock has not been read | |
457 | * in, therefore we do not know the block size. | |
458 | * Before the mount call ends we will convert | |
459 | * these to FSBs. | |
460 | */ | |
a67d7c5f | 461 | if (dsunit) { |
9d565ffa CH |
462 | mp->m_dalign = dsunit; |
463 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 464 | } |
9d565ffa CH |
465 | |
466 | if (dswidth) | |
467 | mp->m_swidth = dswidth; | |
468 | } | |
469 | ||
470 | if (mp->m_logbufs != -1 && | |
471 | mp->m_logbufs != 0 && | |
472 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
473 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
474 | cmn_err(CE_WARN, | |
475 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
476 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
477 | return XFS_ERROR(EINVAL); | |
478 | } | |
479 | if (mp->m_logbsize != -1 && | |
480 | mp->m_logbsize != 0 && | |
481 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
482 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
483 | !is_power_of_2(mp->m_logbsize))) { | |
484 | cmn_err(CE_WARN, | |
485 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
486 | mp->m_logbsize); | |
487 | return XFS_ERROR(EINVAL); | |
488 | } | |
489 | ||
490 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
491 | if (!mp->m_fsname) | |
492 | return ENOMEM; | |
493 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
494 | ||
495 | if (iosizelog) { | |
496 | if (iosizelog > XFS_MAX_IO_LOG || | |
497 | iosizelog < XFS_MIN_IO_LOG) { | |
498 | cmn_err(CE_WARN, | |
499 | "XFS: invalid log iosize: %d [not %d-%d]", | |
500 | iosizelog, XFS_MIN_IO_LOG, | |
501 | XFS_MAX_IO_LOG); | |
502 | return XFS_ERROR(EINVAL); | |
503 | } | |
504 | ||
505 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
506 | mp->m_readio_log = iosizelog; | |
507 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
508 | } |
509 | ||
a67d7c5f DC |
510 | return 0; |
511 | } | |
512 | ||
513 | struct proc_xfs_info { | |
514 | int flag; | |
515 | char *str; | |
516 | }; | |
517 | ||
518 | STATIC int | |
519 | xfs_showargs( | |
520 | struct xfs_mount *mp, | |
521 | struct seq_file *m) | |
522 | { | |
523 | static struct proc_xfs_info xfs_info_set[] = { | |
524 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 525 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 526 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
527 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
528 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
529 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
530 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
531 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, | |
532 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, | |
533 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
534 | { XFS_MOUNT_DMAPI, "," MNTOPT_DMAPI }, | |
535 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, | |
536 | { 0, NULL } | |
537 | }; | |
538 | static struct proc_xfs_info xfs_info_unset[] = { | |
539 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
540 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
541 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
542 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
543 | { 0, NULL } | |
544 | }; | |
545 | struct proc_xfs_info *xfs_infop; | |
546 | ||
547 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
548 | if (mp->m_flags & xfs_infop->flag) | |
549 | seq_puts(m, xfs_infop->str); | |
550 | } | |
551 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
552 | if (!(mp->m_flags & xfs_infop->flag)) | |
553 | seq_puts(m, xfs_infop->str); | |
554 | } | |
555 | ||
556 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
557 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
558 | (int)(1 << mp->m_writeio_log) >> 10); | |
559 | ||
560 | if (mp->m_logbufs > 0) | |
561 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
562 | if (mp->m_logbsize > 0) | |
563 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
564 | ||
565 | if (mp->m_logname) | |
566 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
567 | if (mp->m_rtname) | |
568 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
569 | ||
570 | if (mp->m_dalign > 0) | |
571 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
572 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
573 | if (mp->m_swidth > 0) | |
574 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
575 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
576 | ||
577 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
578 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
579 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
580 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
581 | ||
988abe40 AE |
582 | /* Either project or group quotas can be active, not both */ |
583 | ||
584 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
585 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
586 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
587 | else | |
588 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
589 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
590 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
591 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
592 | else | |
593 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
594 | } | |
a67d7c5f DC |
595 | |
596 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
597 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
598 | ||
599 | return 0; | |
600 | } | |
1da177e4 LT |
601 | __uint64_t |
602 | xfs_max_file_offset( | |
603 | unsigned int blockshift) | |
604 | { | |
605 | unsigned int pagefactor = 1; | |
606 | unsigned int bitshift = BITS_PER_LONG - 1; | |
607 | ||
608 | /* Figure out maximum filesize, on Linux this can depend on | |
609 | * the filesystem blocksize (on 32 bit platforms). | |
610 | * __block_prepare_write does this in an [unsigned] long... | |
611 | * page->index << (PAGE_CACHE_SHIFT - bbits) | |
612 | * So, for page sized blocks (4K on 32 bit platforms), | |
613 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
614 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
615 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
616 | * Note1: get_block_t takes a long (implicit cast from above) | |
617 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
618 | * can optionally convert the [unsigned] long from above into | |
619 | * an [unsigned] long long. | |
620 | */ | |
621 | ||
622 | #if BITS_PER_LONG == 32 | |
90c699a9 | 623 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
624 | ASSERT(sizeof(sector_t) == 8); |
625 | pagefactor = PAGE_CACHE_SIZE; | |
626 | bitshift = BITS_PER_LONG; | |
627 | # else | |
628 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
629 | # endif | |
630 | #endif | |
631 | ||
632 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
633 | } | |
634 | ||
3180e66d | 635 | STATIC int |
1da177e4 LT |
636 | xfs_blkdev_get( |
637 | xfs_mount_t *mp, | |
638 | const char *name, | |
639 | struct block_device **bdevp) | |
640 | { | |
641 | int error = 0; | |
642 | ||
30c40d2c | 643 | *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); |
1da177e4 LT |
644 | if (IS_ERR(*bdevp)) { |
645 | error = PTR_ERR(*bdevp); | |
646 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
647 | } | |
648 | ||
649 | return -error; | |
650 | } | |
651 | ||
3180e66d | 652 | STATIC void |
1da177e4 LT |
653 | xfs_blkdev_put( |
654 | struct block_device *bdev) | |
655 | { | |
656 | if (bdev) | |
30c40d2c | 657 | close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); |
1da177e4 LT |
658 | } |
659 | ||
f538d4da CH |
660 | /* |
661 | * Try to write out the superblock using barriers. | |
662 | */ | |
663 | STATIC int | |
664 | xfs_barrier_test( | |
665 | xfs_mount_t *mp) | |
666 | { | |
667 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
668 | int error; | |
669 | ||
670 | XFS_BUF_UNDONE(sbp); | |
671 | XFS_BUF_UNREAD(sbp); | |
672 | XFS_BUF_UNDELAYWRITE(sbp); | |
673 | XFS_BUF_WRITE(sbp); | |
674 | XFS_BUF_UNASYNC(sbp); | |
675 | XFS_BUF_ORDERED(sbp); | |
676 | ||
677 | xfsbdstrat(mp, sbp); | |
678 | error = xfs_iowait(sbp); | |
679 | ||
680 | /* | |
681 | * Clear all the flags we set and possible error state in the | |
682 | * buffer. We only did the write to try out whether barriers | |
683 | * worked and shouldn't leave any traces in the superblock | |
684 | * buffer. | |
685 | */ | |
686 | XFS_BUF_DONE(sbp); | |
687 | XFS_BUF_ERROR(sbp, 0); | |
688 | XFS_BUF_UNORDERED(sbp); | |
689 | ||
690 | xfs_buf_relse(sbp); | |
691 | return error; | |
692 | } | |
693 | ||
d96f8f89 | 694 | STATIC void |
f538d4da CH |
695 | xfs_mountfs_check_barriers(xfs_mount_t *mp) |
696 | { | |
697 | int error; | |
698 | ||
699 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
700 | xfs_fs_cmn_err(CE_NOTE, mp, | |
701 | "Disabling barriers, not supported with external log device"); | |
702 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 703 | return; |
f538d4da CH |
704 | } |
705 | ||
b2ea401b NS |
706 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
707 | xfs_fs_cmn_err(CE_NOTE, mp, | |
708 | "Disabling barriers, underlying device is readonly"); | |
709 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
710 | return; | |
711 | } | |
712 | ||
f538d4da CH |
713 | error = xfs_barrier_test(mp); |
714 | if (error) { | |
715 | xfs_fs_cmn_err(CE_NOTE, mp, | |
716 | "Disabling barriers, trial barrier write failed"); | |
717 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 718 | return; |
f538d4da CH |
719 | } |
720 | } | |
721 | ||
722 | void | |
723 | xfs_blkdev_issue_flush( | |
724 | xfs_buftarg_t *buftarg) | |
725 | { | |
ce8e922c | 726 | blkdev_issue_flush(buftarg->bt_bdev, NULL); |
f538d4da | 727 | } |
1da177e4 | 728 | |
19f354d4 CH |
729 | STATIC void |
730 | xfs_close_devices( | |
731 | struct xfs_mount *mp) | |
732 | { | |
733 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 734 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 735 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 736 | xfs_blkdev_put(logdev); |
19f354d4 CH |
737 | } |
738 | if (mp->m_rtdev_targp) { | |
c032bfcf | 739 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 740 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 741 | xfs_blkdev_put(rtdev); |
19f354d4 | 742 | } |
b7963133 | 743 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
744 | } |
745 | ||
746 | /* | |
747 | * The file system configurations are: | |
748 | * (1) device (partition) with data and internal log | |
749 | * (2) logical volume with data and log subvolumes. | |
750 | * (3) logical volume with data, log, and realtime subvolumes. | |
751 | * | |
752 | * We only have to handle opening the log and realtime volumes here if | |
753 | * they are present. The data subvolume has already been opened by | |
754 | * get_sb_bdev() and is stored in sb->s_bdev. | |
755 | */ | |
756 | STATIC int | |
757 | xfs_open_devices( | |
9d565ffa | 758 | struct xfs_mount *mp) |
19f354d4 CH |
759 | { |
760 | struct block_device *ddev = mp->m_super->s_bdev; | |
761 | struct block_device *logdev = NULL, *rtdev = NULL; | |
762 | int error; | |
763 | ||
764 | /* | |
765 | * Open real time and log devices - order is important. | |
766 | */ | |
9d565ffa CH |
767 | if (mp->m_logname) { |
768 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
769 | if (error) |
770 | goto out; | |
771 | } | |
772 | ||
9d565ffa CH |
773 | if (mp->m_rtname) { |
774 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
775 | if (error) |
776 | goto out_close_logdev; | |
777 | ||
778 | if (rtdev == ddev || rtdev == logdev) { | |
779 | cmn_err(CE_WARN, | |
780 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
781 | error = EINVAL; | |
782 | goto out_close_rtdev; | |
783 | } | |
784 | } | |
785 | ||
786 | /* | |
787 | * Setup xfs_mount buffer target pointers | |
788 | */ | |
789 | error = ENOMEM; | |
790 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); | |
791 | if (!mp->m_ddev_targp) | |
792 | goto out_close_rtdev; | |
793 | ||
794 | if (rtdev) { | |
795 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); | |
796 | if (!mp->m_rtdev_targp) | |
797 | goto out_free_ddev_targ; | |
798 | } | |
799 | ||
800 | if (logdev && logdev != ddev) { | |
801 | mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1); | |
802 | if (!mp->m_logdev_targp) | |
803 | goto out_free_rtdev_targ; | |
804 | } else { | |
805 | mp->m_logdev_targp = mp->m_ddev_targp; | |
806 | } | |
807 | ||
808 | return 0; | |
809 | ||
810 | out_free_rtdev_targ: | |
811 | if (mp->m_rtdev_targp) | |
b7963133 | 812 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 813 | out_free_ddev_targ: |
b7963133 | 814 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
815 | out_close_rtdev: |
816 | if (rtdev) | |
817 | xfs_blkdev_put(rtdev); | |
818 | out_close_logdev: | |
819 | if (logdev && logdev != ddev) | |
820 | xfs_blkdev_put(logdev); | |
821 | out: | |
822 | return error; | |
823 | } | |
824 | ||
e34b562c CH |
825 | /* |
826 | * Setup xfs_mount buffer target pointers based on superblock | |
827 | */ | |
828 | STATIC int | |
829 | xfs_setup_devices( | |
830 | struct xfs_mount *mp) | |
831 | { | |
832 | int error; | |
19f354d4 | 833 | |
e34b562c CH |
834 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
835 | mp->m_sb.sb_sectsize); | |
836 | if (error) | |
837 | return error; | |
838 | ||
839 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
840 | unsigned int log_sector_size = BBSIZE; | |
841 | ||
842 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
843 | log_sector_size = mp->m_sb.sb_logsectsize; | |
844 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
845 | mp->m_sb.sb_blocksize, | |
846 | log_sector_size); | |
847 | if (error) | |
848 | return error; | |
849 | } | |
850 | if (mp->m_rtdev_targp) { | |
851 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
852 | mp->m_sb.sb_blocksize, | |
853 | mp->m_sb.sb_sectsize); | |
854 | if (error) | |
855 | return error; | |
856 | } | |
857 | ||
858 | return 0; | |
859 | } | |
19f354d4 | 860 | |
249a8c11 DC |
861 | /* |
862 | * XFS AIL push thread support | |
863 | */ | |
864 | void | |
865 | xfsaild_wakeup( | |
82fa9012 | 866 | struct xfs_ail *ailp, |
249a8c11 DC |
867 | xfs_lsn_t threshold_lsn) |
868 | { | |
82fa9012 DC |
869 | ailp->xa_target = threshold_lsn; |
870 | wake_up_process(ailp->xa_task); | |
249a8c11 DC |
871 | } |
872 | ||
3180e66d | 873 | STATIC int |
249a8c11 DC |
874 | xfsaild( |
875 | void *data) | |
876 | { | |
82fa9012 | 877 | struct xfs_ail *ailp = data; |
249a8c11 DC |
878 | xfs_lsn_t last_pushed_lsn = 0; |
879 | long tout = 0; | |
880 | ||
881 | while (!kthread_should_stop()) { | |
882 | if (tout) | |
883 | schedule_timeout_interruptible(msecs_to_jiffies(tout)); | |
884 | tout = 1000; | |
885 | ||
886 | /* swsusp */ | |
887 | try_to_freeze(); | |
888 | ||
82fa9012 DC |
889 | ASSERT(ailp->xa_mount->m_log); |
890 | if (XFS_FORCED_SHUTDOWN(ailp->xa_mount)) | |
249a8c11 DC |
891 | continue; |
892 | ||
82fa9012 | 893 | tout = xfsaild_push(ailp, &last_pushed_lsn); |
249a8c11 DC |
894 | } |
895 | ||
896 | return 0; | |
897 | } /* xfsaild */ | |
898 | ||
899 | int | |
900 | xfsaild_start( | |
82fa9012 | 901 | struct xfs_ail *ailp) |
249a8c11 | 902 | { |
82fa9012 DC |
903 | ailp->xa_target = 0; |
904 | ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild"); | |
905 | if (IS_ERR(ailp->xa_task)) | |
906 | return -PTR_ERR(ailp->xa_task); | |
249a8c11 DC |
907 | return 0; |
908 | } | |
909 | ||
910 | void | |
911 | xfsaild_stop( | |
82fa9012 | 912 | struct xfs_ail *ailp) |
249a8c11 | 913 | { |
82fa9012 | 914 | kthread_stop(ailp->xa_task); |
249a8c11 DC |
915 | } |
916 | ||
917 | ||
bf904248 | 918 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 919 | STATIC struct inode * |
a50cd269 | 920 | xfs_fs_alloc_inode( |
1da177e4 LT |
921 | struct super_block *sb) |
922 | { | |
bf904248 | 923 | BUG(); |
493dca61 | 924 | return NULL; |
1da177e4 LT |
925 | } |
926 | ||
bf904248 | 927 | /* |
99fa8cb3 DC |
928 | * Now that the generic code is guaranteed not to be accessing |
929 | * the linux inode, we can reclaim the inode. | |
bf904248 | 930 | */ |
1da177e4 | 931 | STATIC void |
a50cd269 | 932 | xfs_fs_destroy_inode( |
bf904248 | 933 | struct inode *inode) |
1da177e4 | 934 | { |
99fa8cb3 DC |
935 | xfs_inode_t *ip = XFS_I(inode); |
936 | ||
937 | XFS_STATS_INC(vn_reclaim); | |
938 | if (xfs_reclaim(ip)) | |
939 | panic("%s: cannot reclaim 0x%p\n", __func__, inode); | |
1da177e4 LT |
940 | } |
941 | ||
07c8f675 DC |
942 | /* |
943 | * Slab object creation initialisation for the XFS inode. | |
944 | * This covers only the idempotent fields in the XFS inode; | |
945 | * all other fields need to be initialised on allocation | |
946 | * from the slab. This avoids the need to repeatedly intialise | |
947 | * fields in the xfs inode that left in the initialise state | |
948 | * when freeing the inode. | |
949 | */ | |
bf904248 DC |
950 | STATIC void |
951 | xfs_fs_inode_init_once( | |
07c8f675 DC |
952 | void *inode) |
953 | { | |
954 | struct xfs_inode *ip = inode; | |
955 | ||
956 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
957 | |
958 | /* vfs inode */ | |
959 | inode_init_once(VFS_I(ip)); | |
960 | ||
961 | /* xfs inode */ | |
07c8f675 DC |
962 | atomic_set(&ip->i_iocount, 0); |
963 | atomic_set(&ip->i_pincount, 0); | |
964 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
965 | init_waitqueue_head(&ip->i_ipin_wait); |
966 | /* | |
967 | * Because we want to use a counting completion, complete | |
968 | * the flush completion once to allow a single access to | |
969 | * the flush completion without blocking. | |
970 | */ | |
971 | init_completion(&ip->i_flush); | |
972 | complete(&ip->i_flush); | |
973 | ||
974 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
975 | "xfsino", ip->i_ino); | |
976 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
977 | } | |
978 | ||
1da177e4 LT |
979 | /* |
980 | * Attempt to flush the inode, this will actually fail | |
981 | * if the inode is pinned, but we dirty the inode again | |
982 | * at the point when it is unpinned after a log write, | |
8758280f | 983 | * since this is when the inode itself becomes flushable. |
1da177e4 LT |
984 | */ |
985 | STATIC int | |
a50cd269 | 986 | xfs_fs_write_inode( |
1da177e4 LT |
987 | struct inode *inode, |
988 | int sync) | |
989 | { | |
2e656092 | 990 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 991 | struct xfs_mount *mp = ip->i_mount; |
a3f74ffb | 992 | int error = 0; |
1da177e4 | 993 | |
2e656092 | 994 | xfs_itrace_entry(ip); |
d4bb6d06 CH |
995 | |
996 | if (XFS_FORCED_SHUTDOWN(mp)) | |
997 | return XFS_ERROR(EIO); | |
998 | ||
739bfb2a | 999 | if (sync) { |
2e656092 DC |
1000 | error = xfs_wait_on_pages(ip, 0, -1); |
1001 | if (error) | |
d4bb6d06 | 1002 | goto out; |
1da177e4 | 1003 | } |
2e656092 | 1004 | |
d4bb6d06 CH |
1005 | /* |
1006 | * Bypass inodes which have already been cleaned by | |
1007 | * the inode flush clustering code inside xfs_iflush | |
1008 | */ | |
1009 | if (xfs_inode_clean(ip)) | |
1010 | goto out; | |
1011 | ||
1012 | /* | |
1013 | * We make this non-blocking if the inode is contended, return | |
1014 | * EAGAIN to indicate to the caller that they did not succeed. | |
1015 | * This prevents the flush path from blocking on inodes inside | |
1016 | * another operation right now, they get caught later by xfs_sync. | |
1017 | */ | |
1018 | if (sync) { | |
1019 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1020 | xfs_iflock(ip); | |
1021 | ||
1022 | error = xfs_iflush(ip, XFS_IFLUSH_SYNC); | |
1023 | } else { | |
1024 | error = EAGAIN; | |
1025 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) | |
1026 | goto out; | |
1027 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) | |
1028 | goto out_unlock; | |
1029 | ||
1030 | error = xfs_iflush(ip, XFS_IFLUSH_ASYNC_NOBLOCK); | |
1031 | } | |
1032 | ||
1033 | out_unlock: | |
1034 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1035 | out: | |
e893bffd LM |
1036 | /* |
1037 | * if we failed to write out the inode then mark | |
1038 | * it dirty again so we'll try again later. | |
1039 | */ | |
1040 | if (error) | |
2e656092 | 1041 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
1042 | return -error; |
1043 | } | |
1044 | ||
1045 | STATIC void | |
a50cd269 | 1046 | xfs_fs_clear_inode( |
1da177e4 LT |
1047 | struct inode *inode) |
1048 | { | |
1543d79c | 1049 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1050 | |
99fa8cb3 DC |
1051 | xfs_itrace_entry(ip); |
1052 | XFS_STATS_INC(vn_rele); | |
1053 | XFS_STATS_INC(vn_remove); | |
1054 | XFS_STATS_DEC(vn_active); | |
1055 | ||
1056 | xfs_inactive(ip); | |
56d433e4 | 1057 | } |
1da177e4 | 1058 | |
a738159d CH |
1059 | STATIC void |
1060 | xfs_free_fsname( | |
1061 | struct xfs_mount *mp) | |
1062 | { | |
1063 | kfree(mp->m_fsname); | |
1064 | kfree(mp->m_rtname); | |
1065 | kfree(mp->m_logname); | |
1066 | } | |
1067 | ||
1da177e4 | 1068 | STATIC void |
a50cd269 | 1069 | xfs_fs_put_super( |
1da177e4 LT |
1070 | struct super_block *sb) |
1071 | { | |
745f6919 | 1072 | struct xfs_mount *mp = XFS_M(sb); |
e48ad316 CH |
1073 | struct xfs_inode *rip = mp->m_rootip; |
1074 | int unmount_event_flags = 0; | |
1da177e4 | 1075 | |
a167b17e | 1076 | xfs_syncd_stop(mp); |
075fe102 CH |
1077 | |
1078 | if (!(sb->s_flags & MS_RDONLY)) { | |
1079 | /* | |
1080 | * XXX(hch): this should be SYNC_WAIT. | |
1081 | * | |
1082 | * Or more likely not needed at all because the VFS is already | |
1083 | * calling ->sync_fs after shutting down all filestem | |
1084 | * operations and just before calling ->put_super. | |
1085 | */ | |
1086 | xfs_sync_data(mp, 0); | |
1087 | xfs_sync_attr(mp, 0); | |
1088 | } | |
e48ad316 CH |
1089 | |
1090 | #ifdef HAVE_DMAPI | |
1091 | if (mp->m_flags & XFS_MOUNT_DMAPI) { | |
1092 | unmount_event_flags = | |
1093 | (mp->m_dmevmask & (1 << DM_EVENT_UNMOUNT)) ? | |
1094 | 0 : DM_FLAGS_UNWANTED; | |
1095 | /* | |
1096 | * Ignore error from dmapi here, first unmount is not allowed | |
1097 | * to fail anyway, and second we wouldn't want to fail a | |
1098 | * unmount because of dmapi. | |
1099 | */ | |
1100 | XFS_SEND_PREUNMOUNT(mp, rip, DM_RIGHT_NULL, rip, DM_RIGHT_NULL, | |
1101 | NULL, NULL, 0, 0, unmount_event_flags); | |
1102 | } | |
1103 | #endif | |
1104 | ||
1105 | /* | |
1106 | * Blow away any referenced inode in the filestreams cache. | |
1107 | * This can and will cause log traffic as inodes go inactive | |
1108 | * here. | |
1109 | */ | |
1110 | xfs_filestream_unmount(mp); | |
1111 | ||
1112 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1113 | |
e48ad316 CH |
1114 | if (mp->m_flags & XFS_MOUNT_DMAPI) { |
1115 | XFS_SEND_UNMOUNT(mp, rip, DM_RIGHT_NULL, 0, 0, | |
1116 | unmount_event_flags); | |
1117 | } | |
1118 | ||
19f354d4 | 1119 | xfs_unmountfs(mp); |
6203300e | 1120 | xfs_freesb(mp); |
c962fb79 | 1121 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1122 | xfs_close_devices(mp); |
e48ad316 | 1123 | xfs_dmops_put(mp); |
a738159d | 1124 | xfs_free_fsname(mp); |
c962fb79 | 1125 | kfree(mp); |
1da177e4 LT |
1126 | } |
1127 | ||
1da177e4 | 1128 | STATIC int |
a50cd269 | 1129 | xfs_fs_sync_super( |
1da177e4 LT |
1130 | struct super_block *sb, |
1131 | int wait) | |
1132 | { | |
745f6919 | 1133 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1134 | int error; |
1da177e4 | 1135 | |
e893bffd LM |
1136 | /* |
1137 | * Treat a sync operation like a freeze. This is to work | |
1138 | * around a race in sync_inodes() which works in two phases | |
1139 | * - an asynchronous flush, which can write out an inode | |
1140 | * without waiting for file size updates to complete, and a | |
1141 | * synchronous flush, which wont do anything because the | |
1142 | * async flush removed the inode's dirty flag. Also | |
1143 | * sync_inodes() will not see any files that just have | |
1144 | * outstanding transactions to be flushed because we don't | |
1145 | * dirty the Linux inode until after the transaction I/O | |
1146 | * completes. | |
1147 | */ | |
e9f1c6ee DC |
1148 | if (wait || unlikely(sb->s_frozen == SB_FREEZE_WRITE)) |
1149 | error = xfs_quiesce_data(mp); | |
1150 | else | |
1151 | error = xfs_sync_fsdata(mp, 0); | |
1da177e4 LT |
1152 | |
1153 | if (unlikely(laptop_mode)) { | |
74394496 | 1154 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1155 | |
1156 | /* | |
1157 | * The disk must be active because we're syncing. | |
1158 | * We schedule xfssyncd now (now that the disk is | |
1159 | * active) instead of later (when it might not be). | |
1160 | */ | |
74394496 | 1161 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1162 | /* |
1163 | * We have to wait for the sync iteration to complete. | |
1164 | * If we don't, the disk activity caused by the sync | |
1165 | * will come after the sync is completed, and that | |
1166 | * triggers another sync from laptop mode. | |
1167 | */ | |
74394496 CH |
1168 | wait_event(mp->m_wait_single_sync_task, |
1169 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1170 | } |
1171 | ||
1172 | return -error; | |
1173 | } | |
1174 | ||
1175 | STATIC int | |
a50cd269 | 1176 | xfs_fs_statfs( |
726c3342 | 1177 | struct dentry *dentry, |
1da177e4 LT |
1178 | struct kstatfs *statp) |
1179 | { | |
4ca488eb CH |
1180 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1181 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1182 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1183 | __uint64_t fakeinos, id; |
1184 | xfs_extlen_t lsize; | |
1185 | ||
1186 | statp->f_type = XFS_SB_MAGIC; | |
1187 | statp->f_namelen = MAXNAMELEN - 1; | |
1188 | ||
1189 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1190 | statp->f_fsid.val[0] = (u32)id; | |
1191 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1192 | ||
d4d90b57 | 1193 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1194 | |
1195 | spin_lock(&mp->m_sb_lock); | |
1196 | statp->f_bsize = sbp->sb_blocksize; | |
1197 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1198 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1199 | statp->f_bfree = statp->f_bavail = | |
1200 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1201 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1202 | statp->f_files = |
1203 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1204 | if (mp->m_maxicount) | |
a19d9f88 CH |
1205 | statp->f_files = min_t(typeof(statp->f_files), |
1206 | statp->f_files, | |
1207 | mp->m_maxicount); | |
4ca488eb CH |
1208 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); |
1209 | spin_unlock(&mp->m_sb_lock); | |
1210 | ||
7d095257 CH |
1211 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1212 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1213 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1214 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1215 | return 0; |
1da177e4 LT |
1216 | } |
1217 | ||
1218 | STATIC int | |
a50cd269 | 1219 | xfs_fs_remount( |
1da177e4 LT |
1220 | struct super_block *sb, |
1221 | int *flags, | |
1222 | char *options) | |
1223 | { | |
745f6919 | 1224 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1225 | substring_t args[MAX_OPT_ARGS]; |
1226 | char *p; | |
7884bc86 | 1227 | int error; |
1da177e4 | 1228 | |
62a877e3 CH |
1229 | while ((p = strsep(&options, ",")) != NULL) { |
1230 | int token; | |
bdd907ba | 1231 | |
62a877e3 CH |
1232 | if (!*p) |
1233 | continue; | |
48b62a1a | 1234 | |
62a877e3 CH |
1235 | token = match_token(p, tokens, args); |
1236 | switch (token) { | |
1237 | case Opt_barrier: | |
48b62a1a | 1238 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1239 | |
1240 | /* | |
1241 | * Test if barriers are actually working if we can, | |
1242 | * else delay this check until the filesystem is | |
1243 | * marked writeable. | |
1244 | */ | |
1245 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) | |
1246 | xfs_mountfs_check_barriers(mp); | |
1247 | break; | |
1248 | case Opt_nobarrier: | |
48b62a1a | 1249 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1250 | break; |
1251 | default: | |
6efdf281 CH |
1252 | /* |
1253 | * Logically we would return an error here to prevent | |
1254 | * users from believing they might have changed | |
1255 | * mount options using remount which can't be changed. | |
1256 | * | |
1257 | * But unfortunately mount(8) adds all options from | |
1258 | * mtab and fstab to the mount arguments in some cases | |
1259 | * so we can't blindly reject options, but have to | |
1260 | * check for each specified option if it actually | |
1261 | * differs from the currently set option and only | |
1262 | * reject it if that's the case. | |
1263 | * | |
1264 | * Until that is implemented we return success for | |
1265 | * every remount request, and silently ignore all | |
1266 | * options that we can't actually change. | |
1267 | */ | |
1268 | #if 0 | |
62a877e3 CH |
1269 | printk(KERN_INFO |
1270 | "XFS: mount option \"%s\" not supported for remount\n", p); | |
1271 | return -EINVAL; | |
6efdf281 | 1272 | #else |
6c5e51da | 1273 | break; |
6efdf281 | 1274 | #endif |
48b62a1a | 1275 | } |
62a877e3 CH |
1276 | } |
1277 | ||
7884bc86 | 1278 | /* ro -> rw */ |
62a877e3 CH |
1279 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1280 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
1281 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1282 | xfs_mountfs_check_barriers(mp); | |
7884bc86 CH |
1283 | |
1284 | /* | |
1285 | * If this is the first remount to writeable state we | |
1286 | * might have some superblock changes to update. | |
1287 | */ | |
1288 | if (mp->m_update_flags) { | |
1289 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1290 | if (error) { | |
1291 | cmn_err(CE_WARN, | |
1292 | "XFS: failed to write sb changes"); | |
1293 | return error; | |
1294 | } | |
1295 | mp->m_update_flags = 0; | |
1296 | } | |
62a877e3 CH |
1297 | } |
1298 | ||
1299 | /* rw -> ro */ | |
1300 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
e9f1c6ee | 1301 | xfs_quiesce_data(mp); |
76bf105c | 1302 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1303 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1304 | } | |
1305 | ||
62a877e3 | 1306 | return 0; |
1da177e4 LT |
1307 | } |
1308 | ||
9909c4aa CH |
1309 | /* |
1310 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1311 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1312 | * record to dirty the log in case of a crash while frozen. |
1313 | */ | |
c4be0c1d TS |
1314 | STATIC int |
1315 | xfs_fs_freeze( | |
1da177e4 LT |
1316 | struct super_block *sb) |
1317 | { | |
9909c4aa CH |
1318 | struct xfs_mount *mp = XFS_M(sb); |
1319 | ||
76bf105c | 1320 | xfs_quiesce_attr(mp); |
c4be0c1d | 1321 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1322 | } |
1323 | ||
1324 | STATIC int | |
a50cd269 | 1325 | xfs_fs_show_options( |
1da177e4 LT |
1326 | struct seq_file *m, |
1327 | struct vfsmount *mnt) | |
1328 | { | |
745f6919 | 1329 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1330 | } |
1331 | ||
f8f15e42 CH |
1332 | /* |
1333 | * This function fills in xfs_mount_t fields based on mount args. | |
1334 | * Note: the superblock _has_ now been read in. | |
1335 | */ | |
1336 | STATIC int | |
1337 | xfs_finish_flags( | |
f8f15e42 CH |
1338 | struct xfs_mount *mp) |
1339 | { | |
1340 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1341 | ||
025dfdaf | 1342 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1343 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1344 | if (mp->m_logbsize <= 0 && |
1345 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1346 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1347 | } else if (mp->m_logbsize > 0 && |
1348 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
f8f15e42 CH |
1349 | cmn_err(CE_WARN, |
1350 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
1351 | return XFS_ERROR(EINVAL); | |
1352 | } | |
1353 | } else { | |
1354 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1355 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
f8f15e42 CH |
1356 | cmn_err(CE_WARN, |
1357 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
1358 | return XFS_ERROR(EINVAL); | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | /* | |
1363 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1364 | * told by noattr2 to turn it off | |
1365 | */ | |
1366 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1367 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1368 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1369 | ||
1370 | /* | |
1371 | * prohibit r/w mounts of read-only filesystems | |
1372 | */ | |
1373 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
1374 | cmn_err(CE_WARN, | |
1375 | "XFS: cannot mount a read-only filesystem as read-write"); | |
1376 | return XFS_ERROR(EROFS); | |
1377 | } | |
1378 | ||
f8f15e42 CH |
1379 | return 0; |
1380 | } | |
1381 | ||
1da177e4 | 1382 | STATIC int |
a50cd269 | 1383 | xfs_fs_fill_super( |
1da177e4 LT |
1384 | struct super_block *sb, |
1385 | void *data, | |
1386 | int silent) | |
1387 | { | |
f3dcc13f | 1388 | struct inode *root; |
745f6919 | 1389 | struct xfs_mount *mp = NULL; |
c962fb79 | 1390 | int flags = 0, error = ENOMEM; |
9d565ffa | 1391 | char *mtpt = NULL; |
bdd907ba | 1392 | |
c962fb79 CH |
1393 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1394 | if (!mp) | |
9d565ffa | 1395 | goto out; |
1da177e4 | 1396 | |
c962fb79 | 1397 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1398 | mutex_init(&mp->m_growlock); |
1399 | atomic_set(&mp->m_active_trans, 0); | |
74394496 CH |
1400 | INIT_LIST_HEAD(&mp->m_sync_list); |
1401 | spin_lock_init(&mp->m_sync_lock); | |
1402 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1403 | ||
b267ce99 CH |
1404 | mp->m_super = sb; |
1405 | sb->s_fs_info = mp; | |
1da177e4 | 1406 | |
9d565ffa | 1407 | error = xfs_parseargs(mp, (char *)data, &mtpt); |
745f6919 | 1408 | if (error) |
9d565ffa | 1409 | goto out_free_fsname; |
1da177e4 LT |
1410 | |
1411 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1412 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1413 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1414 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1415 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1416 | #endif |
a50cd269 | 1417 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1418 | |
9d565ffa | 1419 | error = xfs_dmops_get(mp); |
f8f15e42 | 1420 | if (error) |
9d565ffa | 1421 | goto out_free_fsname; |
1da177e4 | 1422 | |
9d565ffa | 1423 | if (silent) |
f8f15e42 CH |
1424 | flags |= XFS_MFSI_QUIET; |
1425 | ||
9d565ffa | 1426 | error = xfs_open_devices(mp); |
19f354d4 | 1427 | if (error) |
7d095257 | 1428 | goto out_put_dmops; |
f8f15e42 | 1429 | |
c962fb79 CH |
1430 | if (xfs_icsb_init_counters(mp)) |
1431 | mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; | |
1432 | ||
f8f15e42 CH |
1433 | error = xfs_readsb(mp, flags); |
1434 | if (error) | |
9d565ffa CH |
1435 | goto out_destroy_counters; |
1436 | ||
1437 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1438 | if (error) |
effa2eda | 1439 | goto out_free_sb; |
f8f15e42 | 1440 | |
e34b562c | 1441 | error = xfs_setup_devices(mp); |
19f354d4 | 1442 | if (error) |
effa2eda | 1443 | goto out_free_sb; |
f8f15e42 CH |
1444 | |
1445 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1446 | xfs_mountfs_check_barriers(mp); | |
1447 | ||
1448 | error = xfs_filestream_mount(mp); | |
1449 | if (error) | |
effa2eda | 1450 | goto out_free_sb; |
f8f15e42 | 1451 | |
4249023a | 1452 | error = xfs_mountfs(mp); |
f8f15e42 | 1453 | if (error) |
120226c1 | 1454 | goto out_filestream_unmount; |
f8f15e42 | 1455 | |
9d565ffa | 1456 | XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, mtpt, mp->m_fsname); |
f8f15e42 | 1457 | |
4ca488eb CH |
1458 | sb->s_magic = XFS_SB_MAGIC; |
1459 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1460 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1461 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1462 | sb->s_time_gran = 1; | |
1463 | set_posix_acl_flag(sb); | |
1464 | ||
01651646 | 1465 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1466 | if (!root) { |
cbc89dcf | 1467 | error = ENOENT; |
1da177e4 | 1468 | goto fail_unmount; |
cbc89dcf | 1469 | } |
f3dcc13f CH |
1470 | if (is_bad_inode(root)) { |
1471 | error = EINVAL; | |
1da177e4 LT |
1472 | goto fail_vnrele; |
1473 | } | |
f3dcc13f CH |
1474 | sb->s_root = d_alloc_root(root); |
1475 | if (!sb->s_root) { | |
1476 | error = ENOMEM; | |
1da177e4 LT |
1477 | goto fail_vnrele; |
1478 | } | |
74394496 | 1479 | |
a167b17e DC |
1480 | error = xfs_syncd_init(mp); |
1481 | if (error) | |
1da177e4 | 1482 | goto fail_vnrele; |
74394496 | 1483 | |
9d565ffa | 1484 | kfree(mtpt); |
1da177e4 | 1485 | |
9d565ffa | 1486 | xfs_itrace_exit(XFS_I(sb->s_root->d_inode)); |
1da177e4 LT |
1487 | return 0; |
1488 | ||
120226c1 CH |
1489 | out_filestream_unmount: |
1490 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1491 | out_free_sb: |
1492 | xfs_freesb(mp); | |
9d565ffa | 1493 | out_destroy_counters: |
c962fb79 | 1494 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1495 | xfs_close_devices(mp); |
19f354d4 | 1496 | out_put_dmops: |
f8f15e42 | 1497 | xfs_dmops_put(mp); |
9d565ffa CH |
1498 | out_free_fsname: |
1499 | xfs_free_fsname(mp); | |
1500 | kfree(mtpt); | |
c962fb79 | 1501 | kfree(mp); |
9d565ffa | 1502 | out: |
c962fb79 | 1503 | return -error; |
f8f15e42 CH |
1504 | |
1505 | fail_vnrele: | |
1da177e4 LT |
1506 | if (sb->s_root) { |
1507 | dput(sb->s_root); | |
1508 | sb->s_root = NULL; | |
1509 | } else { | |
f3dcc13f | 1510 | iput(root); |
1da177e4 LT |
1511 | } |
1512 | ||
f8f15e42 | 1513 | fail_unmount: |
e48ad316 CH |
1514 | /* |
1515 | * Blow away any referenced inode in the filestreams cache. | |
1516 | * This can and will cause log traffic as inodes go inactive | |
1517 | * here. | |
1518 | */ | |
1519 | xfs_filestream_unmount(mp); | |
1520 | ||
1521 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1522 | |
19f354d4 | 1523 | xfs_unmountfs(mp); |
6203300e | 1524 | goto out_free_sb; |
1da177e4 LT |
1525 | } |
1526 | ||
454e2398 | 1527 | STATIC int |
a50cd269 | 1528 | xfs_fs_get_sb( |
1da177e4 LT |
1529 | struct file_system_type *fs_type, |
1530 | int flags, | |
1531 | const char *dev_name, | |
454e2398 DH |
1532 | void *data, |
1533 | struct vfsmount *mnt) | |
1da177e4 | 1534 | { |
454e2398 DH |
1535 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
1536 | mnt); | |
a50cd269 NS |
1537 | } |
1538 | ||
7989cb8e | 1539 | static struct super_operations xfs_super_operations = { |
a50cd269 NS |
1540 | .alloc_inode = xfs_fs_alloc_inode, |
1541 | .destroy_inode = xfs_fs_destroy_inode, | |
1542 | .write_inode = xfs_fs_write_inode, | |
1543 | .clear_inode = xfs_fs_clear_inode, | |
1544 | .put_super = xfs_fs_put_super, | |
a50cd269 | 1545 | .sync_fs = xfs_fs_sync_super, |
c4be0c1d | 1546 | .freeze_fs = xfs_fs_freeze, |
a50cd269 NS |
1547 | .statfs = xfs_fs_statfs, |
1548 | .remount_fs = xfs_fs_remount, | |
1549 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1550 | }; |
1551 | ||
5085b607 | 1552 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1553 | .owner = THIS_MODULE, |
1554 | .name = "xfs", | |
a50cd269 | 1555 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
1556 | .kill_sb = kill_block_super, |
1557 | .fs_flags = FS_REQUIRES_DEV, | |
1558 | }; | |
1559 | ||
9f8868ff CH |
1560 | STATIC int __init |
1561 | xfs_alloc_trace_bufs(void) | |
1562 | { | |
1563 | #ifdef XFS_ALLOC_TRACE | |
1564 | xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_MAYFAIL); | |
1565 | if (!xfs_alloc_trace_buf) | |
1566 | goto out; | |
1567 | #endif | |
1568 | #ifdef XFS_BMAP_TRACE | |
1569 | xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_MAYFAIL); | |
1570 | if (!xfs_bmap_trace_buf) | |
1571 | goto out_free_alloc_trace; | |
1572 | #endif | |
8c4ed633 CH |
1573 | #ifdef XFS_BTREE_TRACE |
1574 | xfs_allocbt_trace_buf = ktrace_alloc(XFS_ALLOCBT_TRACE_SIZE, | |
1575 | KM_MAYFAIL); | |
1576 | if (!xfs_allocbt_trace_buf) | |
1577 | goto out_free_bmap_trace; | |
1578 | ||
1579 | xfs_inobt_trace_buf = ktrace_alloc(XFS_INOBT_TRACE_SIZE, KM_MAYFAIL); | |
1580 | if (!xfs_inobt_trace_buf) | |
1581 | goto out_free_allocbt_trace; | |
1582 | ||
9f8868ff CH |
1583 | xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_MAYFAIL); |
1584 | if (!xfs_bmbt_trace_buf) | |
8c4ed633 | 1585 | goto out_free_inobt_trace; |
9f8868ff CH |
1586 | #endif |
1587 | #ifdef XFS_ATTR_TRACE | |
1588 | xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_MAYFAIL); | |
1589 | if (!xfs_attr_trace_buf) | |
1590 | goto out_free_bmbt_trace; | |
1591 | #endif | |
1592 | #ifdef XFS_DIR2_TRACE | |
1593 | xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_MAYFAIL); | |
1594 | if (!xfs_dir2_trace_buf) | |
1595 | goto out_free_attr_trace; | |
1596 | #endif | |
1597 | ||
1598 | return 0; | |
1599 | ||
1600 | #ifdef XFS_DIR2_TRACE | |
1601 | out_free_attr_trace: | |
1602 | #endif | |
1603 | #ifdef XFS_ATTR_TRACE | |
1604 | ktrace_free(xfs_attr_trace_buf); | |
1605 | out_free_bmbt_trace: | |
1606 | #endif | |
8c4ed633 | 1607 | #ifdef XFS_BTREE_TRACE |
9f8868ff | 1608 | ktrace_free(xfs_bmbt_trace_buf); |
8c4ed633 CH |
1609 | out_free_inobt_trace: |
1610 | ktrace_free(xfs_inobt_trace_buf); | |
1611 | out_free_allocbt_trace: | |
1612 | ktrace_free(xfs_allocbt_trace_buf); | |
9f8868ff CH |
1613 | out_free_bmap_trace: |
1614 | #endif | |
1615 | #ifdef XFS_BMAP_TRACE | |
1616 | ktrace_free(xfs_bmap_trace_buf); | |
1617 | out_free_alloc_trace: | |
1618 | #endif | |
1619 | #ifdef XFS_ALLOC_TRACE | |
1620 | ktrace_free(xfs_alloc_trace_buf); | |
1621 | out: | |
1622 | #endif | |
1623 | return -ENOMEM; | |
1624 | } | |
1625 | ||
1626 | STATIC void | |
1627 | xfs_free_trace_bufs(void) | |
1628 | { | |
1629 | #ifdef XFS_DIR2_TRACE | |
1630 | ktrace_free(xfs_dir2_trace_buf); | |
1631 | #endif | |
1632 | #ifdef XFS_ATTR_TRACE | |
1633 | ktrace_free(xfs_attr_trace_buf); | |
1634 | #endif | |
8c4ed633 | 1635 | #ifdef XFS_BTREE_TRACE |
9f8868ff | 1636 | ktrace_free(xfs_bmbt_trace_buf); |
8c4ed633 CH |
1637 | ktrace_free(xfs_inobt_trace_buf); |
1638 | ktrace_free(xfs_allocbt_trace_buf); | |
9f8868ff CH |
1639 | #endif |
1640 | #ifdef XFS_BMAP_TRACE | |
1641 | ktrace_free(xfs_bmap_trace_buf); | |
1642 | #endif | |
1643 | #ifdef XFS_ALLOC_TRACE | |
1644 | ktrace_free(xfs_alloc_trace_buf); | |
1645 | #endif | |
1646 | } | |
1647 | ||
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 | ||
1693 | /* | |
1694 | * The size of the zone allocated buf log item is the maximum | |
1695 | * size possible under XFS. This wastes a little bit of memory, | |
1696 | * but it is much faster. | |
1697 | */ | |
1698 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
1699 | (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) / | |
1700 | NBWORD) * sizeof(int))), "xfs_buf_item"); | |
1701 | if (!xfs_buf_item_zone) | |
1702 | goto out_destroy_trans_zone; | |
1703 | ||
1704 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1705 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1706 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1707 | if (!xfs_efd_zone) | |
1708 | goto out_destroy_buf_item_zone; | |
1709 | ||
1710 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1711 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1712 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1713 | if (!xfs_efi_zone) | |
1714 | goto out_destroy_efd_zone; | |
1715 | ||
1716 | xfs_inode_zone = | |
1717 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1718 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1719 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1720 | if (!xfs_inode_zone) |
1721 | goto out_destroy_efi_zone; | |
1722 | ||
1723 | xfs_ili_zone = | |
1724 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1725 | KM_ZONE_SPREAD, NULL); | |
1726 | if (!xfs_ili_zone) | |
1727 | goto out_destroy_inode_zone; | |
1728 | ||
9f8868ff CH |
1729 | return 0; |
1730 | ||
9f8868ff CH |
1731 | out_destroy_inode_zone: |
1732 | kmem_zone_destroy(xfs_inode_zone); | |
1733 | out_destroy_efi_zone: | |
1734 | kmem_zone_destroy(xfs_efi_zone); | |
1735 | out_destroy_efd_zone: | |
1736 | kmem_zone_destroy(xfs_efd_zone); | |
1737 | out_destroy_buf_item_zone: | |
1738 | kmem_zone_destroy(xfs_buf_item_zone); | |
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); | |
1769 | kmem_zone_destroy(xfs_trans_zone); | |
1770 | kmem_zone_destroy(xfs_ifork_zone); | |
1771 | kmem_zone_destroy(xfs_dabuf_zone); | |
1772 | kmem_zone_destroy(xfs_da_state_zone); | |
1773 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1774 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1775 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1776 | mempool_destroy(xfs_ioend_pool); | |
1777 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1778 | |
1779 | } | |
1da177e4 LT |
1780 | |
1781 | STATIC int __init | |
9f8868ff | 1782 | init_xfs_fs(void) |
1da177e4 LT |
1783 | { |
1784 | int error; | |
1da177e4 | 1785 | |
65795910 CH |
1786 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1787 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1788 | |
1da177e4 | 1789 | ktrace_init(64); |
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 | ||
1797 | error = xfs_alloc_trace_bufs(); | |
1798 | if (error) | |
1799 | goto out_destroy_zones; | |
1800 | ||
1801 | error = xfs_mru_cache_init(); | |
1802 | if (error) | |
1803 | goto out_free_trace_buffers; | |
1804 | ||
1805 | error = xfs_filestream_init(); | |
1806 | if (error) | |
1807 | goto out_mru_cache_uninit; | |
1da177e4 | 1808 | |
ce8e922c | 1809 | error = xfs_buf_init(); |
9f8868ff CH |
1810 | if (error) |
1811 | goto out_filestream_uninit; | |
1812 | ||
1813 | error = xfs_init_procfs(); | |
1814 | if (error) | |
1815 | goto out_buf_terminate; | |
1816 | ||
1817 | error = xfs_sysctl_register(); | |
1818 | if (error) | |
1819 | goto out_cleanup_procfs; | |
1da177e4 | 1820 | |
1da177e4 LT |
1821 | vfs_initquota(); |
1822 | ||
1823 | error = register_filesystem(&xfs_fs_type); | |
1824 | if (error) | |
9f8868ff | 1825 | goto out_sysctl_unregister; |
1da177e4 LT |
1826 | return 0; |
1827 | ||
9f8868ff CH |
1828 | out_sysctl_unregister: |
1829 | xfs_sysctl_unregister(); | |
1830 | out_cleanup_procfs: | |
1831 | xfs_cleanup_procfs(); | |
1832 | out_buf_terminate: | |
ce8e922c | 1833 | xfs_buf_terminate(); |
9f8868ff CH |
1834 | out_filestream_uninit: |
1835 | xfs_filestream_uninit(); | |
1836 | out_mru_cache_uninit: | |
1837 | xfs_mru_cache_uninit(); | |
1838 | out_free_trace_buffers: | |
1839 | xfs_free_trace_bufs(); | |
1840 | out_destroy_zones: | |
8758280f | 1841 | xfs_destroy_zones(); |
9f8868ff | 1842 | out: |
1da177e4 LT |
1843 | return error; |
1844 | } | |
1845 | ||
1846 | STATIC void __exit | |
9f8868ff | 1847 | exit_xfs_fs(void) |
1da177e4 LT |
1848 | { |
1849 | vfs_exitquota(); | |
1da177e4 | 1850 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1851 | xfs_sysctl_unregister(); |
1852 | xfs_cleanup_procfs(); | |
ce8e922c | 1853 | xfs_buf_terminate(); |
9f8868ff CH |
1854 | xfs_filestream_uninit(); |
1855 | xfs_mru_cache_uninit(); | |
1856 | xfs_free_trace_bufs(); | |
8758280f | 1857 | xfs_destroy_zones(); |
1da177e4 LT |
1858 | ktrace_uninit(); |
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"); |