Commit | Line | Data |
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1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
0b1b213f | 18 | |
1da177e4 | 19 | #include "xfs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
1da177e4 LT |
28 | #include "xfs_quota.h" |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
33 | #include "xfs_dinode.h" |
34 | #include "xfs_inode.h" | |
a844f451 | 35 | #include "xfs_btree.h" |
8c4ed633 | 36 | #include "xfs_btree_trace.h" |
a844f451 | 37 | #include "xfs_ialloc.h" |
1da177e4 | 38 | #include "xfs_bmap.h" |
1da177e4 LT |
39 | #include "xfs_rtalloc.h" |
40 | #include "xfs_error.h" | |
41 | #include "xfs_itable.h" | |
9909c4aa | 42 | #include "xfs_fsops.h" |
1da177e4 LT |
43 | #include "xfs_attr.h" |
44 | #include "xfs_buf_item.h" | |
45 | #include "xfs_utils.h" | |
739bfb2a | 46 | #include "xfs_vnodeops.h" |
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; | |
71e330b5 DC |
356 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
357 | mp->m_flags &= ~XFS_MOUNT_DELAYLOG; | |
a67d7c5f DC |
358 | } else if (!strcmp(this_char, "ihashsize")) { |
359 | cmn_err(CE_WARN, | |
360 | "XFS: ihashsize no longer used, option is deprecated."); | |
361 | } else if (!strcmp(this_char, "osyncisdsync")) { | |
a67d7c5f | 362 | cmn_err(CE_WARN, |
a64afb05 CH |
363 | "XFS: osyncisdsync has no effect, option is deprecated."); |
364 | } else if (!strcmp(this_char, "osyncisosync")) { | |
365 | cmn_err(CE_WARN, | |
366 | "XFS: osyncisosync has no effect, option is deprecated."); | |
a67d7c5f DC |
367 | } else if (!strcmp(this_char, "irixsgid")) { |
368 | cmn_err(CE_WARN, | |
369 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
370 | } else { | |
371 | cmn_err(CE_WARN, | |
372 | "XFS: unknown mount option [%s].", this_char); | |
373 | return EINVAL; | |
374 | } | |
375 | } | |
376 | ||
9d565ffa CH |
377 | /* |
378 | * no recovery flag requires a read-only mount | |
379 | */ | |
380 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
381 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
382 | cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); | |
383 | return EINVAL; | |
a67d7c5f DC |
384 | } |
385 | ||
9d565ffa | 386 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
a67d7c5f DC |
387 | cmn_err(CE_WARN, |
388 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
389 | return EINVAL; | |
390 | } | |
391 | ||
7d095257 CH |
392 | #ifndef CONFIG_XFS_QUOTA |
393 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
394 | cmn_err(CE_WARN, | |
395 | "XFS: quota support not available in this kernel."); | |
396 | return EINVAL; | |
397 | } | |
398 | #endif | |
399 | ||
9d565ffa CH |
400 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
401 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
a67d7c5f DC |
402 | cmn_err(CE_WARN, |
403 | "XFS: cannot mount with both project and group quota"); | |
404 | return EINVAL; | |
405 | } | |
406 | ||
a67d7c5f DC |
407 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
408 | cmn_err(CE_WARN, | |
409 | "XFS: sunit and swidth must be specified together"); | |
410 | return EINVAL; | |
411 | } | |
412 | ||
413 | if (dsunit && (dswidth % dsunit != 0)) { | |
414 | cmn_err(CE_WARN, | |
415 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
416 | dswidth, dsunit); | |
417 | return EINVAL; | |
418 | } | |
419 | ||
9d565ffa CH |
420 | done: |
421 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
422 | /* | |
423 | * At this point the superblock has not been read | |
424 | * in, therefore we do not know the block size. | |
425 | * Before the mount call ends we will convert | |
426 | * these to FSBs. | |
427 | */ | |
a67d7c5f | 428 | if (dsunit) { |
9d565ffa CH |
429 | mp->m_dalign = dsunit; |
430 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 431 | } |
9d565ffa CH |
432 | |
433 | if (dswidth) | |
434 | mp->m_swidth = dswidth; | |
435 | } | |
436 | ||
437 | if (mp->m_logbufs != -1 && | |
438 | mp->m_logbufs != 0 && | |
439 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
440 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
441 | cmn_err(CE_WARN, | |
442 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
443 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
444 | return XFS_ERROR(EINVAL); | |
445 | } | |
446 | if (mp->m_logbsize != -1 && | |
447 | mp->m_logbsize != 0 && | |
448 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
449 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
450 | !is_power_of_2(mp->m_logbsize))) { | |
451 | cmn_err(CE_WARN, | |
452 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
453 | mp->m_logbsize); | |
454 | return XFS_ERROR(EINVAL); | |
455 | } | |
456 | ||
457 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
458 | if (!mp->m_fsname) | |
459 | return ENOMEM; | |
460 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
461 | ||
462 | if (iosizelog) { | |
463 | if (iosizelog > XFS_MAX_IO_LOG || | |
464 | iosizelog < XFS_MIN_IO_LOG) { | |
465 | cmn_err(CE_WARN, | |
466 | "XFS: invalid log iosize: %d [not %d-%d]", | |
467 | iosizelog, XFS_MIN_IO_LOG, | |
468 | XFS_MAX_IO_LOG); | |
469 | return XFS_ERROR(EINVAL); | |
470 | } | |
471 | ||
472 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
473 | mp->m_readio_log = iosizelog; | |
474 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
475 | } |
476 | ||
a67d7c5f DC |
477 | return 0; |
478 | } | |
479 | ||
480 | struct proc_xfs_info { | |
481 | int flag; | |
482 | char *str; | |
483 | }; | |
484 | ||
485 | STATIC int | |
486 | xfs_showargs( | |
487 | struct xfs_mount *mp, | |
488 | struct seq_file *m) | |
489 | { | |
490 | static struct proc_xfs_info xfs_info_set[] = { | |
491 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 492 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 493 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
494 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
495 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
496 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
497 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
498 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
499 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 500 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
71e330b5 | 501 | { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, |
a67d7c5f DC |
502 | { 0, NULL } |
503 | }; | |
504 | static struct proc_xfs_info xfs_info_unset[] = { | |
505 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
506 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
507 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
508 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
509 | { 0, NULL } | |
510 | }; | |
511 | struct proc_xfs_info *xfs_infop; | |
512 | ||
513 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
514 | if (mp->m_flags & xfs_infop->flag) | |
515 | seq_puts(m, xfs_infop->str); | |
516 | } | |
517 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
518 | if (!(mp->m_flags & xfs_infop->flag)) | |
519 | seq_puts(m, xfs_infop->str); | |
520 | } | |
521 | ||
522 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
523 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
524 | (int)(1 << mp->m_writeio_log) >> 10); | |
525 | ||
526 | if (mp->m_logbufs > 0) | |
527 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
528 | if (mp->m_logbsize > 0) | |
529 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
530 | ||
531 | if (mp->m_logname) | |
532 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
533 | if (mp->m_rtname) | |
534 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
535 | ||
536 | if (mp->m_dalign > 0) | |
537 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
538 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
539 | if (mp->m_swidth > 0) | |
540 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
541 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
542 | ||
543 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
544 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
545 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
546 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
547 | ||
988abe40 AE |
548 | /* Either project or group quotas can be active, not both */ |
549 | ||
550 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
551 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
552 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
553 | else | |
554 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
555 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
556 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
557 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
558 | else | |
559 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
560 | } | |
a67d7c5f DC |
561 | |
562 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
563 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
564 | ||
565 | return 0; | |
566 | } | |
1da177e4 LT |
567 | __uint64_t |
568 | xfs_max_file_offset( | |
569 | unsigned int blockshift) | |
570 | { | |
571 | unsigned int pagefactor = 1; | |
572 | unsigned int bitshift = BITS_PER_LONG - 1; | |
573 | ||
574 | /* Figure out maximum filesize, on Linux this can depend on | |
575 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 576 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
577 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
578 | * So, for page sized blocks (4K on 32 bit platforms), | |
579 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
580 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
581 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
582 | * Note1: get_block_t takes a long (implicit cast from above) | |
583 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
584 | * can optionally convert the [unsigned] long from above into | |
585 | * an [unsigned] long long. | |
586 | */ | |
587 | ||
588 | #if BITS_PER_LONG == 32 | |
90c699a9 | 589 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
590 | ASSERT(sizeof(sector_t) == 8); |
591 | pagefactor = PAGE_CACHE_SIZE; | |
592 | bitshift = BITS_PER_LONG; | |
593 | # else | |
594 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
595 | # endif | |
596 | #endif | |
597 | ||
598 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
599 | } | |
600 | ||
3180e66d | 601 | STATIC int |
1da177e4 LT |
602 | xfs_blkdev_get( |
603 | xfs_mount_t *mp, | |
604 | const char *name, | |
605 | struct block_device **bdevp) | |
606 | { | |
607 | int error = 0; | |
608 | ||
d4d77629 TH |
609 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
610 | mp); | |
1da177e4 LT |
611 | if (IS_ERR(*bdevp)) { |
612 | error = PTR_ERR(*bdevp); | |
613 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
614 | } | |
615 | ||
616 | return -error; | |
617 | } | |
618 | ||
3180e66d | 619 | STATIC void |
1da177e4 LT |
620 | xfs_blkdev_put( |
621 | struct block_device *bdev) | |
622 | { | |
623 | if (bdev) | |
e525fd89 | 624 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
625 | } |
626 | ||
f538d4da CH |
627 | /* |
628 | * Try to write out the superblock using barriers. | |
629 | */ | |
630 | STATIC int | |
631 | xfs_barrier_test( | |
632 | xfs_mount_t *mp) | |
633 | { | |
634 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
635 | int error; | |
636 | ||
637 | XFS_BUF_UNDONE(sbp); | |
638 | XFS_BUF_UNREAD(sbp); | |
639 | XFS_BUF_UNDELAYWRITE(sbp); | |
640 | XFS_BUF_WRITE(sbp); | |
641 | XFS_BUF_UNASYNC(sbp); | |
642 | XFS_BUF_ORDERED(sbp); | |
643 | ||
644 | xfsbdstrat(mp, sbp); | |
1a1a3e97 | 645 | error = xfs_buf_iowait(sbp); |
f538d4da CH |
646 | |
647 | /* | |
648 | * Clear all the flags we set and possible error state in the | |
649 | * buffer. We only did the write to try out whether barriers | |
650 | * worked and shouldn't leave any traces in the superblock | |
651 | * buffer. | |
652 | */ | |
653 | XFS_BUF_DONE(sbp); | |
654 | XFS_BUF_ERROR(sbp, 0); | |
655 | XFS_BUF_UNORDERED(sbp); | |
656 | ||
657 | xfs_buf_relse(sbp); | |
658 | return error; | |
659 | } | |
660 | ||
d96f8f89 | 661 | STATIC void |
f538d4da CH |
662 | xfs_mountfs_check_barriers(xfs_mount_t *mp) |
663 | { | |
664 | int error; | |
665 | ||
666 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
667 | xfs_fs_cmn_err(CE_NOTE, mp, | |
668 | "Disabling barriers, not supported with external log device"); | |
669 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 670 | return; |
f538d4da CH |
671 | } |
672 | ||
b2ea401b NS |
673 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
674 | xfs_fs_cmn_err(CE_NOTE, mp, | |
675 | "Disabling barriers, underlying device is readonly"); | |
676 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
677 | return; | |
678 | } | |
679 | ||
f538d4da CH |
680 | error = xfs_barrier_test(mp); |
681 | if (error) { | |
682 | xfs_fs_cmn_err(CE_NOTE, mp, | |
683 | "Disabling barriers, trial barrier write failed"); | |
684 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 685 | return; |
f538d4da CH |
686 | } |
687 | } | |
688 | ||
689 | void | |
690 | xfs_blkdev_issue_flush( | |
691 | xfs_buftarg_t *buftarg) | |
692 | { | |
dd3932ed | 693 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); |
f538d4da | 694 | } |
1da177e4 | 695 | |
19f354d4 CH |
696 | STATIC void |
697 | xfs_close_devices( | |
698 | struct xfs_mount *mp) | |
699 | { | |
700 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 701 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 702 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 703 | xfs_blkdev_put(logdev); |
19f354d4 CH |
704 | } |
705 | if (mp->m_rtdev_targp) { | |
c032bfcf | 706 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 707 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 708 | xfs_blkdev_put(rtdev); |
19f354d4 | 709 | } |
b7963133 | 710 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
711 | } |
712 | ||
713 | /* | |
714 | * The file system configurations are: | |
715 | * (1) device (partition) with data and internal log | |
716 | * (2) logical volume with data and log subvolumes. | |
717 | * (3) logical volume with data, log, and realtime subvolumes. | |
718 | * | |
719 | * We only have to handle opening the log and realtime volumes here if | |
720 | * they are present. The data subvolume has already been opened by | |
721 | * get_sb_bdev() and is stored in sb->s_bdev. | |
722 | */ | |
723 | STATIC int | |
724 | xfs_open_devices( | |
9d565ffa | 725 | struct xfs_mount *mp) |
19f354d4 CH |
726 | { |
727 | struct block_device *ddev = mp->m_super->s_bdev; | |
728 | struct block_device *logdev = NULL, *rtdev = NULL; | |
729 | int error; | |
730 | ||
731 | /* | |
732 | * Open real time and log devices - order is important. | |
733 | */ | |
9d565ffa CH |
734 | if (mp->m_logname) { |
735 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
736 | if (error) |
737 | goto out; | |
738 | } | |
739 | ||
9d565ffa CH |
740 | if (mp->m_rtname) { |
741 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
742 | if (error) |
743 | goto out_close_logdev; | |
744 | ||
745 | if (rtdev == ddev || rtdev == logdev) { | |
746 | cmn_err(CE_WARN, | |
747 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
748 | error = EINVAL; | |
749 | goto out_close_rtdev; | |
750 | } | |
751 | } | |
752 | ||
753 | /* | |
754 | * Setup xfs_mount buffer target pointers | |
755 | */ | |
756 | error = ENOMEM; | |
ebad861b | 757 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
758 | if (!mp->m_ddev_targp) |
759 | goto out_close_rtdev; | |
760 | ||
761 | if (rtdev) { | |
ebad861b DC |
762 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
763 | mp->m_fsname); | |
19f354d4 CH |
764 | if (!mp->m_rtdev_targp) |
765 | goto out_free_ddev_targ; | |
766 | } | |
767 | ||
768 | if (logdev && logdev != ddev) { | |
ebad861b DC |
769 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
770 | mp->m_fsname); | |
19f354d4 CH |
771 | if (!mp->m_logdev_targp) |
772 | goto out_free_rtdev_targ; | |
773 | } else { | |
774 | mp->m_logdev_targp = mp->m_ddev_targp; | |
775 | } | |
776 | ||
777 | return 0; | |
778 | ||
779 | out_free_rtdev_targ: | |
780 | if (mp->m_rtdev_targp) | |
b7963133 | 781 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 782 | out_free_ddev_targ: |
b7963133 | 783 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
784 | out_close_rtdev: |
785 | if (rtdev) | |
786 | xfs_blkdev_put(rtdev); | |
787 | out_close_logdev: | |
788 | if (logdev && logdev != ddev) | |
789 | xfs_blkdev_put(logdev); | |
790 | out: | |
791 | return error; | |
792 | } | |
793 | ||
e34b562c CH |
794 | /* |
795 | * Setup xfs_mount buffer target pointers based on superblock | |
796 | */ | |
797 | STATIC int | |
798 | xfs_setup_devices( | |
799 | struct xfs_mount *mp) | |
800 | { | |
801 | int error; | |
19f354d4 | 802 | |
e34b562c CH |
803 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
804 | mp->m_sb.sb_sectsize); | |
805 | if (error) | |
806 | return error; | |
807 | ||
808 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
809 | unsigned int log_sector_size = BBSIZE; | |
810 | ||
811 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
812 | log_sector_size = mp->m_sb.sb_logsectsize; | |
813 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
814 | mp->m_sb.sb_blocksize, | |
815 | log_sector_size); | |
816 | if (error) | |
817 | return error; | |
818 | } | |
819 | if (mp->m_rtdev_targp) { | |
820 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
821 | mp->m_sb.sb_blocksize, | |
822 | mp->m_sb.sb_sectsize); | |
823 | if (error) | |
824 | return error; | |
825 | } | |
826 | ||
827 | return 0; | |
828 | } | |
19f354d4 | 829 | |
249a8c11 DC |
830 | /* |
831 | * XFS AIL push thread support | |
832 | */ | |
833 | void | |
834 | xfsaild_wakeup( | |
82fa9012 | 835 | struct xfs_ail *ailp, |
249a8c11 DC |
836 | xfs_lsn_t threshold_lsn) |
837 | { | |
e677d0f9 DC |
838 | /* only ever move the target forwards */ |
839 | if (XFS_LSN_CMP(threshold_lsn, ailp->xa_target) > 0) { | |
840 | ailp->xa_target = threshold_lsn; | |
841 | wake_up_process(ailp->xa_task); | |
842 | } | |
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()) { | |
e677d0f9 DC |
854 | /* |
855 | * for short sleeps indicating congestion, don't allow us to | |
856 | * get woken early. Otherwise all we do is bang on the AIL lock | |
857 | * without making progress. | |
858 | */ | |
859 | if (tout && tout <= 20) | |
860 | __set_current_state(TASK_KILLABLE); | |
861 | else | |
862 | __set_current_state(TASK_INTERRUPTIBLE); | |
863 | schedule_timeout(tout ? | |
864 | msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); | |
249a8c11 DC |
865 | |
866 | /* swsusp */ | |
867 | try_to_freeze(); | |
868 | ||
82fa9012 DC |
869 | ASSERT(ailp->xa_mount->m_log); |
870 | if (XFS_FORCED_SHUTDOWN(ailp->xa_mount)) | |
249a8c11 DC |
871 | continue; |
872 | ||
82fa9012 | 873 | tout = xfsaild_push(ailp, &last_pushed_lsn); |
249a8c11 DC |
874 | } |
875 | ||
876 | return 0; | |
877 | } /* xfsaild */ | |
878 | ||
879 | int | |
880 | xfsaild_start( | |
82fa9012 | 881 | struct xfs_ail *ailp) |
249a8c11 | 882 | { |
82fa9012 | 883 | ailp->xa_target = 0; |
e2a07812 JE |
884 | ailp->xa_task = kthread_run(xfsaild, ailp, "xfsaild/%s", |
885 | ailp->xa_mount->m_fsname); | |
82fa9012 DC |
886 | if (IS_ERR(ailp->xa_task)) |
887 | return -PTR_ERR(ailp->xa_task); | |
249a8c11 DC |
888 | return 0; |
889 | } | |
890 | ||
891 | void | |
892 | xfsaild_stop( | |
82fa9012 | 893 | struct xfs_ail *ailp) |
249a8c11 | 894 | { |
82fa9012 | 895 | kthread_stop(ailp->xa_task); |
249a8c11 DC |
896 | } |
897 | ||
898 | ||
bf904248 | 899 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 900 | STATIC struct inode * |
a50cd269 | 901 | xfs_fs_alloc_inode( |
1da177e4 LT |
902 | struct super_block *sb) |
903 | { | |
bf904248 | 904 | BUG(); |
493dca61 | 905 | return NULL; |
1da177e4 LT |
906 | } |
907 | ||
bf904248 | 908 | /* |
99fa8cb3 DC |
909 | * Now that the generic code is guaranteed not to be accessing |
910 | * the linux inode, we can reclaim the inode. | |
bf904248 | 911 | */ |
1da177e4 | 912 | STATIC void |
a50cd269 | 913 | xfs_fs_destroy_inode( |
848ce8f7 | 914 | struct inode *inode) |
1da177e4 | 915 | { |
848ce8f7 CH |
916 | struct xfs_inode *ip = XFS_I(inode); |
917 | ||
cca28fb8 | 918 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
919 | |
920 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
921 | |
922 | /* bad inode, get out here ASAP */ | |
923 | if (is_bad_inode(inode)) | |
924 | goto out_reclaim; | |
925 | ||
926 | xfs_ioend_wait(ip); | |
927 | ||
928 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); | |
929 | ||
930 | /* | |
931 | * We should never get here with one of the reclaim flags already set. | |
932 | */ | |
933 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
934 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
935 | ||
936 | /* | |
57817c68 DC |
937 | * We always use background reclaim here because even if the |
938 | * inode is clean, it still may be under IO and hence we have | |
939 | * to take the flush lock. The background reclaim path handles | |
940 | * this more efficiently than we can here, so simply let background | |
941 | * reclaim tear down all inodes. | |
848ce8f7 | 942 | */ |
848ce8f7 | 943 | out_reclaim: |
57817c68 | 944 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
945 | } |
946 | ||
07c8f675 DC |
947 | /* |
948 | * Slab object creation initialisation for the XFS inode. | |
949 | * This covers only the idempotent fields in the XFS inode; | |
950 | * all other fields need to be initialised on allocation | |
b595076a | 951 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
952 | * fields in the xfs inode that left in the initialise state |
953 | * when freeing the inode. | |
954 | */ | |
bf904248 DC |
955 | STATIC void |
956 | xfs_fs_inode_init_once( | |
07c8f675 DC |
957 | void *inode) |
958 | { | |
959 | struct xfs_inode *ip = inode; | |
960 | ||
961 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
962 | |
963 | /* vfs inode */ | |
964 | inode_init_once(VFS_I(ip)); | |
965 | ||
966 | /* xfs inode */ | |
07c8f675 DC |
967 | atomic_set(&ip->i_iocount, 0); |
968 | atomic_set(&ip->i_pincount, 0); | |
969 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
970 | init_waitqueue_head(&ip->i_ipin_wait); |
971 | /* | |
972 | * Because we want to use a counting completion, complete | |
973 | * the flush completion once to allow a single access to | |
974 | * the flush completion without blocking. | |
975 | */ | |
976 | init_completion(&ip->i_flush); | |
977 | complete(&ip->i_flush); | |
978 | ||
979 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
980 | "xfsino", ip->i_ino); | |
07c8f675 DC |
981 | } |
982 | ||
f9581b14 CH |
983 | /* |
984 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that | |
dcd79a14 | 985 | * we catch unlogged VFS level updates to the inode. |
f9581b14 CH |
986 | * |
987 | * We need the barrier() to maintain correct ordering between unlogged | |
988 | * updates and the transaction commit code that clears the i_update_core | |
989 | * field. This requires all updates to be completed before marking the | |
990 | * inode dirty. | |
991 | */ | |
992 | STATIC void | |
993 | xfs_fs_dirty_inode( | |
994 | struct inode *inode) | |
995 | { | |
996 | barrier(); | |
997 | XFS_I(inode)->i_update_core = 1; | |
998 | } | |
999 | ||
07fec736 CH |
1000 | STATIC int |
1001 | xfs_log_inode( | |
1002 | struct xfs_inode *ip) | |
1003 | { | |
1004 | struct xfs_mount *mp = ip->i_mount; | |
1005 | struct xfs_trans *tp; | |
1006 | int error; | |
1007 | ||
1008 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1009 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
1010 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); | |
1011 | ||
1012 | if (error) { | |
1013 | xfs_trans_cancel(tp, 0); | |
1014 | /* we need to return with the lock hold shared */ | |
1015 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1016 | return error; | |
1017 | } | |
1018 | ||
1019 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1020 | ||
1021 | /* | |
1022 | * Note - it's possible that we might have pushed ourselves out of the | |
1023 | * way during trans_reserve which would flush the inode. But there's | |
1024 | * no guarantee that the inode buffer has actually gone out yet (it's | |
1025 | * delwri). Plus the buffer could be pinned anyway if it's part of | |
1026 | * an inode in another recent transaction. So we play it safe and | |
1027 | * fire off the transaction anyway. | |
1028 | */ | |
898621d5 | 1029 | xfs_trans_ijoin(tp, ip); |
07fec736 | 1030 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); |
07fec736 CH |
1031 | error = xfs_trans_commit(tp, 0); |
1032 | xfs_ilock_demote(ip, XFS_ILOCK_EXCL); | |
1033 | ||
1034 | return error; | |
1035 | } | |
1036 | ||
1da177e4 | 1037 | STATIC int |
a50cd269 | 1038 | xfs_fs_write_inode( |
1da177e4 | 1039 | struct inode *inode, |
a9185b41 | 1040 | struct writeback_control *wbc) |
1da177e4 | 1041 | { |
2e656092 | 1042 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 1043 | struct xfs_mount *mp = ip->i_mount; |
07fec736 | 1044 | int error = EAGAIN; |
1da177e4 | 1045 | |
cca28fb8 | 1046 | trace_xfs_write_inode(ip); |
d4bb6d06 CH |
1047 | |
1048 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1049 | return XFS_ERROR(EIO); | |
1050 | ||
a9185b41 | 1051 | if (wbc->sync_mode == WB_SYNC_ALL) { |
07fec736 | 1052 | /* |
7a36c8a9 CH |
1053 | * Make sure the inode has made it it into the log. Instead |
1054 | * of forcing it all the way to stable storage using a | |
1055 | * synchronous transaction we let the log force inside the | |
1056 | * ->sync_fs call do that for thus, which reduces the number | |
1057 | * of synchronous log foces dramatically. | |
07fec736 | 1058 | */ |
37bc5743 | 1059 | xfs_ioend_wait(ip); |
d4bb6d06 | 1060 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
07fec736 CH |
1061 | if (ip->i_update_core) { |
1062 | error = xfs_log_inode(ip); | |
1063 | if (error) | |
1064 | goto out_unlock; | |
1065 | } | |
d4bb6d06 | 1066 | } else { |
07fec736 CH |
1067 | /* |
1068 | * We make this non-blocking if the inode is contended, return | |
1069 | * EAGAIN to indicate to the caller that they did not succeed. | |
1070 | * This prevents the flush path from blocking on inodes inside | |
7a36c8a9 CH |
1071 | * another operation right now, they get caught later by |
1072 | * xfs_sync. | |
07fec736 | 1073 | */ |
d4bb6d06 CH |
1074 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
1075 | goto out; | |
07fec736 | 1076 | |
7a36c8a9 CH |
1077 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) |
1078 | goto out_unlock; | |
d4bb6d06 | 1079 | |
7a36c8a9 CH |
1080 | /* |
1081 | * Now we have the flush lock and the inode is not pinned, we | |
1082 | * can check if the inode is really clean as we know that | |
1083 | * there are no pending transaction completions, it is not | |
1084 | * waiting on the delayed write queue and there is no IO in | |
1085 | * progress. | |
1086 | */ | |
1087 | if (xfs_inode_clean(ip)) { | |
1088 | xfs_ifunlock(ip); | |
1089 | error = 0; | |
1090 | goto out_unlock; | |
1091 | } | |
1092 | error = xfs_iflush(ip, 0); | |
d4bb6d06 CH |
1093 | } |
1094 | ||
1095 | out_unlock: | |
1096 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1097 | out: | |
e893bffd LM |
1098 | /* |
1099 | * if we failed to write out the inode then mark | |
1100 | * it dirty again so we'll try again later. | |
1101 | */ | |
1102 | if (error) | |
2e656092 | 1103 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
1104 | return -error; |
1105 | } | |
1106 | ||
1107 | STATIC void | |
b57922d9 | 1108 | xfs_fs_evict_inode( |
1da177e4 LT |
1109 | struct inode *inode) |
1110 | { | |
1543d79c | 1111 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1112 | |
b57922d9 | 1113 | trace_xfs_evict_inode(ip); |
cca28fb8 | 1114 | |
b57922d9 AV |
1115 | truncate_inode_pages(&inode->i_data, 0); |
1116 | end_writeback(inode); | |
99fa8cb3 DC |
1117 | XFS_STATS_INC(vn_rele); |
1118 | XFS_STATS_INC(vn_remove); | |
1119 | XFS_STATS_DEC(vn_active); | |
1120 | ||
033da48f CH |
1121 | /* |
1122 | * The iolock is used by the file system to coordinate reads, | |
1123 | * writes, and block truncates. Up to this point the lock | |
1124 | * protected concurrent accesses by users of the inode. But | |
1125 | * from here forward we're doing some final processing of the | |
1126 | * inode because we're done with it, and although we reuse the | |
1127 | * iolock for protection it is really a distinct lock class | |
1128 | * (in the lockdep sense) from before. To keep lockdep happy | |
1129 | * (and basically indicate what we are doing), we explicitly | |
1130 | * re-init the iolock here. | |
1131 | */ | |
1132 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
1133 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
dcfcf205 DC |
1134 | lockdep_set_class_and_name(&ip->i_iolock.mr_lock, |
1135 | &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); | |
033da48f | 1136 | |
99fa8cb3 | 1137 | xfs_inactive(ip); |
56d433e4 | 1138 | } |
1da177e4 | 1139 | |
a738159d CH |
1140 | STATIC void |
1141 | xfs_free_fsname( | |
1142 | struct xfs_mount *mp) | |
1143 | { | |
1144 | kfree(mp->m_fsname); | |
1145 | kfree(mp->m_rtname); | |
1146 | kfree(mp->m_logname); | |
1147 | } | |
1148 | ||
1da177e4 | 1149 | STATIC void |
a50cd269 | 1150 | xfs_fs_put_super( |
1da177e4 LT |
1151 | struct super_block *sb) |
1152 | { | |
745f6919 | 1153 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1154 | |
a4190f90 DC |
1155 | /* |
1156 | * Unregister the memory shrinker before we tear down the mount | |
1157 | * structure so we don't have memory reclaim racing with us here. | |
1158 | */ | |
1159 | xfs_inode_shrinker_unregister(mp); | |
a167b17e | 1160 | xfs_syncd_stop(mp); |
075fe102 | 1161 | |
e48ad316 CH |
1162 | /* |
1163 | * Blow away any referenced inode in the filestreams cache. | |
1164 | * This can and will cause log traffic as inodes go inactive | |
1165 | * here. | |
1166 | */ | |
1167 | xfs_filestream_unmount(mp); | |
1168 | ||
1169 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1170 | |
19f354d4 | 1171 | xfs_unmountfs(mp); |
6203300e | 1172 | xfs_freesb(mp); |
c962fb79 | 1173 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1174 | xfs_close_devices(mp); |
a738159d | 1175 | xfs_free_fsname(mp); |
c962fb79 | 1176 | kfree(mp); |
1da177e4 LT |
1177 | } |
1178 | ||
1da177e4 | 1179 | STATIC int |
69961a26 | 1180 | xfs_fs_sync_fs( |
1da177e4 LT |
1181 | struct super_block *sb, |
1182 | int wait) | |
1183 | { | |
745f6919 | 1184 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1185 | int error; |
1da177e4 | 1186 | |
e893bffd | 1187 | /* |
69961a26 CH |
1188 | * Not much we can do for the first async pass. Writing out the |
1189 | * superblock would be counter-productive as we are going to redirty | |
1190 | * when writing out other data and metadata (and writing out a single | |
1191 | * block is quite fast anyway). | |
1192 | * | |
1193 | * Try to asynchronously kick off quota syncing at least. | |
e893bffd | 1194 | */ |
69961a26 CH |
1195 | if (!wait) { |
1196 | xfs_qm_sync(mp, SYNC_TRYLOCK); | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | error = xfs_quiesce_data(mp); | |
1201 | if (error) | |
1202 | return -error; | |
1da177e4 | 1203 | |
69961a26 | 1204 | if (laptop_mode) { |
74394496 | 1205 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1206 | |
1207 | /* | |
1208 | * The disk must be active because we're syncing. | |
1209 | * We schedule xfssyncd now (now that the disk is | |
1210 | * active) instead of later (when it might not be). | |
1211 | */ | |
74394496 | 1212 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1213 | /* |
1214 | * We have to wait for the sync iteration to complete. | |
1215 | * If we don't, the disk activity caused by the sync | |
1216 | * will come after the sync is completed, and that | |
1217 | * triggers another sync from laptop mode. | |
1218 | */ | |
74394496 CH |
1219 | wait_event(mp->m_wait_single_sync_task, |
1220 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1221 | } |
1222 | ||
69961a26 | 1223 | return 0; |
1da177e4 LT |
1224 | } |
1225 | ||
1226 | STATIC int | |
a50cd269 | 1227 | xfs_fs_statfs( |
726c3342 | 1228 | struct dentry *dentry, |
1da177e4 LT |
1229 | struct kstatfs *statp) |
1230 | { | |
4ca488eb CH |
1231 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1232 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1233 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1234 | __uint64_t fakeinos, id; |
1235 | xfs_extlen_t lsize; | |
2fe33661 | 1236 | __int64_t ffree; |
4ca488eb CH |
1237 | |
1238 | statp->f_type = XFS_SB_MAGIC; | |
1239 | statp->f_namelen = MAXNAMELEN - 1; | |
1240 | ||
1241 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1242 | statp->f_fsid.val[0] = (u32)id; | |
1243 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1244 | ||
d4d90b57 | 1245 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1246 | |
1247 | spin_lock(&mp->m_sb_lock); | |
1248 | statp->f_bsize = sbp->sb_blocksize; | |
1249 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1250 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1251 | statp->f_bfree = statp->f_bavail = | |
1252 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1253 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1254 | statp->f_files = |
1255 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1256 | if (mp->m_maxicount) | |
a19d9f88 CH |
1257 | statp->f_files = min_t(typeof(statp->f_files), |
1258 | statp->f_files, | |
1259 | mp->m_maxicount); | |
2fe33661 SB |
1260 | |
1261 | /* make sure statp->f_ffree does not underflow */ | |
1262 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1263 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1264 | ||
4ca488eb CH |
1265 | spin_unlock(&mp->m_sb_lock); |
1266 | ||
7d095257 CH |
1267 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1268 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1269 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1270 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1271 | return 0; |
1da177e4 LT |
1272 | } |
1273 | ||
d5db0f97 ES |
1274 | STATIC void |
1275 | xfs_save_resvblks(struct xfs_mount *mp) | |
1276 | { | |
1277 | __uint64_t resblks = 0; | |
1278 | ||
1279 | mp->m_resblks_save = mp->m_resblks; | |
1280 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1281 | } | |
1282 | ||
1283 | STATIC void | |
1284 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1285 | { | |
1286 | __uint64_t resblks; | |
1287 | ||
1288 | if (mp->m_resblks_save) { | |
1289 | resblks = mp->m_resblks_save; | |
1290 | mp->m_resblks_save = 0; | |
1291 | } else | |
1292 | resblks = xfs_default_resblks(mp); | |
1293 | ||
1294 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1295 | } | |
1296 | ||
1da177e4 | 1297 | STATIC int |
a50cd269 | 1298 | xfs_fs_remount( |
1da177e4 LT |
1299 | struct super_block *sb, |
1300 | int *flags, | |
1301 | char *options) | |
1302 | { | |
745f6919 | 1303 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1304 | substring_t args[MAX_OPT_ARGS]; |
1305 | char *p; | |
7884bc86 | 1306 | int error; |
1da177e4 | 1307 | |
62a877e3 CH |
1308 | while ((p = strsep(&options, ",")) != NULL) { |
1309 | int token; | |
bdd907ba | 1310 | |
62a877e3 CH |
1311 | if (!*p) |
1312 | continue; | |
48b62a1a | 1313 | |
62a877e3 CH |
1314 | token = match_token(p, tokens, args); |
1315 | switch (token) { | |
1316 | case Opt_barrier: | |
48b62a1a | 1317 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1318 | |
1319 | /* | |
1320 | * Test if barriers are actually working if we can, | |
1321 | * else delay this check until the filesystem is | |
1322 | * marked writeable. | |
1323 | */ | |
1324 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) | |
1325 | xfs_mountfs_check_barriers(mp); | |
1326 | break; | |
1327 | case Opt_nobarrier: | |
48b62a1a | 1328 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1329 | break; |
1330 | default: | |
6efdf281 CH |
1331 | /* |
1332 | * Logically we would return an error here to prevent | |
1333 | * users from believing they might have changed | |
1334 | * mount options using remount which can't be changed. | |
1335 | * | |
1336 | * But unfortunately mount(8) adds all options from | |
1337 | * mtab and fstab to the mount arguments in some cases | |
1338 | * so we can't blindly reject options, but have to | |
1339 | * check for each specified option if it actually | |
1340 | * differs from the currently set option and only | |
1341 | * reject it if that's the case. | |
1342 | * | |
1343 | * Until that is implemented we return success for | |
1344 | * every remount request, and silently ignore all | |
1345 | * options that we can't actually change. | |
1346 | */ | |
1347 | #if 0 | |
62a877e3 CH |
1348 | printk(KERN_INFO |
1349 | "XFS: mount option \"%s\" not supported for remount\n", p); | |
1350 | return -EINVAL; | |
6efdf281 | 1351 | #else |
6c5e51da | 1352 | break; |
6efdf281 | 1353 | #endif |
48b62a1a | 1354 | } |
62a877e3 CH |
1355 | } |
1356 | ||
7884bc86 | 1357 | /* ro -> rw */ |
62a877e3 CH |
1358 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1359 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
1360 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1361 | xfs_mountfs_check_barriers(mp); | |
7884bc86 CH |
1362 | |
1363 | /* | |
1364 | * If this is the first remount to writeable state we | |
1365 | * might have some superblock changes to update. | |
1366 | */ | |
1367 | if (mp->m_update_flags) { | |
1368 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1369 | if (error) { | |
1370 | cmn_err(CE_WARN, | |
1371 | "XFS: failed to write sb changes"); | |
1372 | return error; | |
1373 | } | |
1374 | mp->m_update_flags = 0; | |
1375 | } | |
cbe132a8 DC |
1376 | |
1377 | /* | |
1378 | * Fill out the reserve pool if it is empty. Use the stashed | |
1379 | * value if it is non-zero, otherwise go with the default. | |
1380 | */ | |
d5db0f97 | 1381 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1382 | } |
1383 | ||
1384 | /* rw -> ro */ | |
1385 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1386 | /* |
1387 | * After we have synced the data but before we sync the | |
1388 | * metadata, we need to free up the reserve block pool so that | |
1389 | * the used block count in the superblock on disk is correct at | |
1390 | * the end of the remount. Stash the current reserve pool size | |
1391 | * so that if we get remounted rw, we can return it to the same | |
1392 | * size. | |
1393 | */ | |
cbe132a8 | 1394 | |
e9f1c6ee | 1395 | xfs_quiesce_data(mp); |
d5db0f97 | 1396 | xfs_save_resvblks(mp); |
76bf105c | 1397 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1398 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1399 | } | |
1400 | ||
62a877e3 | 1401 | return 0; |
1da177e4 LT |
1402 | } |
1403 | ||
9909c4aa CH |
1404 | /* |
1405 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1406 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1407 | * record to dirty the log in case of a crash while frozen. |
1408 | */ | |
c4be0c1d TS |
1409 | STATIC int |
1410 | xfs_fs_freeze( | |
1da177e4 LT |
1411 | struct super_block *sb) |
1412 | { | |
9909c4aa CH |
1413 | struct xfs_mount *mp = XFS_M(sb); |
1414 | ||
d5db0f97 | 1415 | xfs_save_resvblks(mp); |
76bf105c | 1416 | xfs_quiesce_attr(mp); |
c58efdb4 | 1417 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1418 | } |
1419 | ||
d5db0f97 ES |
1420 | STATIC int |
1421 | xfs_fs_unfreeze( | |
1422 | struct super_block *sb) | |
1423 | { | |
1424 | struct xfs_mount *mp = XFS_M(sb); | |
1425 | ||
1426 | xfs_restore_resvblks(mp); | |
1427 | return 0; | |
1428 | } | |
1429 | ||
1da177e4 | 1430 | STATIC int |
a50cd269 | 1431 | xfs_fs_show_options( |
1da177e4 LT |
1432 | struct seq_file *m, |
1433 | struct vfsmount *mnt) | |
1434 | { | |
745f6919 | 1435 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1436 | } |
1437 | ||
f8f15e42 CH |
1438 | /* |
1439 | * This function fills in xfs_mount_t fields based on mount args. | |
1440 | * Note: the superblock _has_ now been read in. | |
1441 | */ | |
1442 | STATIC int | |
1443 | xfs_finish_flags( | |
f8f15e42 CH |
1444 | struct xfs_mount *mp) |
1445 | { | |
1446 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1447 | ||
025dfdaf | 1448 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1449 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1450 | if (mp->m_logbsize <= 0 && |
1451 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1452 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1453 | } else if (mp->m_logbsize > 0 && |
1454 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
f8f15e42 CH |
1455 | cmn_err(CE_WARN, |
1456 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
1457 | return XFS_ERROR(EINVAL); | |
1458 | } | |
1459 | } else { | |
1460 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1461 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
f8f15e42 CH |
1462 | cmn_err(CE_WARN, |
1463 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
1464 | return XFS_ERROR(EINVAL); | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | /* | |
1469 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1470 | * told by noattr2 to turn it off | |
1471 | */ | |
1472 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1473 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1474 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1475 | ||
1476 | /* | |
1477 | * prohibit r/w mounts of read-only filesystems | |
1478 | */ | |
1479 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
1480 | cmn_err(CE_WARN, | |
1481 | "XFS: cannot mount a read-only filesystem as read-write"); | |
1482 | return XFS_ERROR(EROFS); | |
1483 | } | |
1484 | ||
f8f15e42 CH |
1485 | return 0; |
1486 | } | |
1487 | ||
1da177e4 | 1488 | STATIC int |
a50cd269 | 1489 | xfs_fs_fill_super( |
1da177e4 LT |
1490 | struct super_block *sb, |
1491 | void *data, | |
1492 | int silent) | |
1493 | { | |
f3dcc13f | 1494 | struct inode *root; |
745f6919 | 1495 | struct xfs_mount *mp = NULL; |
c962fb79 | 1496 | int flags = 0, error = ENOMEM; |
bdd907ba | 1497 | |
c962fb79 CH |
1498 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1499 | if (!mp) | |
9d565ffa | 1500 | goto out; |
1da177e4 | 1501 | |
c962fb79 | 1502 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1503 | mutex_init(&mp->m_growlock); |
1504 | atomic_set(&mp->m_active_trans, 0); | |
74394496 CH |
1505 | INIT_LIST_HEAD(&mp->m_sync_list); |
1506 | spin_lock_init(&mp->m_sync_lock); | |
1507 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1508 | ||
b267ce99 CH |
1509 | mp->m_super = sb; |
1510 | sb->s_fs_info = mp; | |
1da177e4 | 1511 | |
288699fe | 1512 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1513 | if (error) |
9d565ffa | 1514 | goto out_free_fsname; |
1da177e4 LT |
1515 | |
1516 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1517 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1518 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1519 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1520 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1521 | #endif |
a50cd269 | 1522 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1523 | |
9d565ffa | 1524 | if (silent) |
f8f15e42 CH |
1525 | flags |= XFS_MFSI_QUIET; |
1526 | ||
9d565ffa | 1527 | error = xfs_open_devices(mp); |
19f354d4 | 1528 | if (error) |
288699fe | 1529 | goto out_free_fsname; |
f8f15e42 | 1530 | |
61ba35de CH |
1531 | error = xfs_icsb_init_counters(mp); |
1532 | if (error) | |
1533 | goto out_close_devices; | |
c962fb79 | 1534 | |
f8f15e42 CH |
1535 | error = xfs_readsb(mp, flags); |
1536 | if (error) | |
9d565ffa CH |
1537 | goto out_destroy_counters; |
1538 | ||
1539 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1540 | if (error) |
effa2eda | 1541 | goto out_free_sb; |
f8f15e42 | 1542 | |
e34b562c | 1543 | error = xfs_setup_devices(mp); |
19f354d4 | 1544 | if (error) |
effa2eda | 1545 | goto out_free_sb; |
f8f15e42 CH |
1546 | |
1547 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1548 | xfs_mountfs_check_barriers(mp); | |
1549 | ||
1550 | error = xfs_filestream_mount(mp); | |
1551 | if (error) | |
effa2eda | 1552 | goto out_free_sb; |
f8f15e42 | 1553 | |
4249023a | 1554 | error = xfs_mountfs(mp); |
f8f15e42 | 1555 | if (error) |
120226c1 | 1556 | goto out_filestream_unmount; |
f8f15e42 | 1557 | |
4ca488eb CH |
1558 | sb->s_magic = XFS_SB_MAGIC; |
1559 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1560 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1561 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1562 | sb->s_time_gran = 1; | |
1563 | set_posix_acl_flag(sb); | |
1564 | ||
01651646 | 1565 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1566 | if (!root) { |
cbc89dcf | 1567 | error = ENOENT; |
1da177e4 | 1568 | goto fail_unmount; |
cbc89dcf | 1569 | } |
f3dcc13f CH |
1570 | if (is_bad_inode(root)) { |
1571 | error = EINVAL; | |
1da177e4 LT |
1572 | goto fail_vnrele; |
1573 | } | |
f3dcc13f CH |
1574 | sb->s_root = d_alloc_root(root); |
1575 | if (!sb->s_root) { | |
1576 | error = ENOMEM; | |
1da177e4 LT |
1577 | goto fail_vnrele; |
1578 | } | |
74394496 | 1579 | |
a167b17e DC |
1580 | error = xfs_syncd_init(mp); |
1581 | if (error) | |
1da177e4 | 1582 | goto fail_vnrele; |
74394496 | 1583 | |
9bf729c0 DC |
1584 | xfs_inode_shrinker_register(mp); |
1585 | ||
1da177e4 LT |
1586 | return 0; |
1587 | ||
120226c1 CH |
1588 | out_filestream_unmount: |
1589 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1590 | out_free_sb: |
1591 | xfs_freesb(mp); | |
9d565ffa | 1592 | out_destroy_counters: |
c962fb79 | 1593 | xfs_icsb_destroy_counters(mp); |
61ba35de | 1594 | out_close_devices: |
19f354d4 | 1595 | xfs_close_devices(mp); |
9d565ffa CH |
1596 | out_free_fsname: |
1597 | xfs_free_fsname(mp); | |
c962fb79 | 1598 | kfree(mp); |
9d565ffa | 1599 | out: |
c962fb79 | 1600 | return -error; |
f8f15e42 CH |
1601 | |
1602 | fail_vnrele: | |
1da177e4 LT |
1603 | if (sb->s_root) { |
1604 | dput(sb->s_root); | |
1605 | sb->s_root = NULL; | |
1606 | } else { | |
f3dcc13f | 1607 | iput(root); |
1da177e4 LT |
1608 | } |
1609 | ||
f8f15e42 | 1610 | fail_unmount: |
e48ad316 CH |
1611 | /* |
1612 | * Blow away any referenced inode in the filestreams cache. | |
1613 | * This can and will cause log traffic as inodes go inactive | |
1614 | * here. | |
1615 | */ | |
1616 | xfs_filestream_unmount(mp); | |
1617 | ||
1618 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1619 | |
19f354d4 | 1620 | xfs_unmountfs(mp); |
6203300e | 1621 | goto out_free_sb; |
1da177e4 LT |
1622 | } |
1623 | ||
152a0836 AV |
1624 | STATIC struct dentry * |
1625 | xfs_fs_mount( | |
1da177e4 LT |
1626 | struct file_system_type *fs_type, |
1627 | int flags, | |
1628 | const char *dev_name, | |
152a0836 | 1629 | void *data) |
1da177e4 | 1630 | { |
152a0836 | 1631 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1632 | } |
1633 | ||
b87221de | 1634 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1635 | .alloc_inode = xfs_fs_alloc_inode, |
1636 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1637 | .dirty_inode = xfs_fs_dirty_inode, |
a50cd269 | 1638 | .write_inode = xfs_fs_write_inode, |
b57922d9 | 1639 | .evict_inode = xfs_fs_evict_inode, |
a50cd269 | 1640 | .put_super = xfs_fs_put_super, |
69961a26 | 1641 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1642 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1643 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1644 | .statfs = xfs_fs_statfs, |
1645 | .remount_fs = xfs_fs_remount, | |
1646 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1647 | }; |
1648 | ||
5085b607 | 1649 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1650 | .owner = THIS_MODULE, |
1651 | .name = "xfs", | |
152a0836 | 1652 | .mount = xfs_fs_mount, |
1da177e4 LT |
1653 | .kill_sb = kill_block_super, |
1654 | .fs_flags = FS_REQUIRES_DEV, | |
1655 | }; | |
1656 | ||
9f8868ff CH |
1657 | STATIC int __init |
1658 | xfs_init_zones(void) | |
1659 | { | |
9f8868ff CH |
1660 | |
1661 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1662 | if (!xfs_ioend_zone) | |
bf904248 | 1663 | goto out; |
9f8868ff CH |
1664 | |
1665 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1666 | xfs_ioend_zone); | |
1667 | if (!xfs_ioend_pool) | |
1668 | goto out_destroy_ioend_zone; | |
1669 | ||
1670 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1671 | "xfs_log_ticket"); | |
1672 | if (!xfs_log_ticket_zone) | |
1673 | goto out_destroy_ioend_pool; | |
1674 | ||
1675 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1676 | "xfs_bmap_free_item"); | |
1677 | if (!xfs_bmap_free_item_zone) | |
1678 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1679 | |
9f8868ff CH |
1680 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1681 | "xfs_btree_cur"); | |
1682 | if (!xfs_btree_cur_zone) | |
1683 | goto out_destroy_bmap_free_item_zone; | |
1684 | ||
1685 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1686 | "xfs_da_state"); | |
1687 | if (!xfs_da_state_zone) | |
1688 | goto out_destroy_btree_cur_zone; | |
1689 | ||
1690 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1691 | if (!xfs_dabuf_zone) | |
1692 | goto out_destroy_da_state_zone; | |
1693 | ||
1694 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1695 | if (!xfs_ifork_zone) | |
1696 | goto out_destroy_dabuf_zone; | |
1697 | ||
1698 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1699 | if (!xfs_trans_zone) | |
1700 | goto out_destroy_ifork_zone; | |
1701 | ||
e98c414f CH |
1702 | xfs_log_item_desc_zone = |
1703 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1704 | "xfs_log_item_desc"); | |
1705 | if (!xfs_log_item_desc_zone) | |
1706 | goto out_destroy_trans_zone; | |
1707 | ||
9f8868ff CH |
1708 | /* |
1709 | * The size of the zone allocated buf log item is the maximum | |
1710 | * size possible under XFS. This wastes a little bit of memory, | |
1711 | * but it is much faster. | |
1712 | */ | |
1713 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
c1155410 | 1714 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
9f8868ff CH |
1715 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
1716 | if (!xfs_buf_item_zone) | |
e98c414f | 1717 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1718 | |
1719 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1720 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1721 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1722 | if (!xfs_efd_zone) | |
1723 | goto out_destroy_buf_item_zone; | |
1724 | ||
1725 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1726 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1727 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1728 | if (!xfs_efi_zone) | |
1729 | goto out_destroy_efd_zone; | |
1730 | ||
1731 | xfs_inode_zone = | |
1732 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1733 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1734 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1735 | if (!xfs_inode_zone) |
1736 | goto out_destroy_efi_zone; | |
1737 | ||
1738 | xfs_ili_zone = | |
1739 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1740 | KM_ZONE_SPREAD, NULL); | |
1741 | if (!xfs_ili_zone) | |
1742 | goto out_destroy_inode_zone; | |
1743 | ||
9f8868ff CH |
1744 | return 0; |
1745 | ||
9f8868ff CH |
1746 | out_destroy_inode_zone: |
1747 | kmem_zone_destroy(xfs_inode_zone); | |
1748 | out_destroy_efi_zone: | |
1749 | kmem_zone_destroy(xfs_efi_zone); | |
1750 | out_destroy_efd_zone: | |
1751 | kmem_zone_destroy(xfs_efd_zone); | |
1752 | out_destroy_buf_item_zone: | |
1753 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1754 | out_destroy_log_item_desc_zone: |
1755 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1756 | out_destroy_trans_zone: |
1757 | kmem_zone_destroy(xfs_trans_zone); | |
1758 | out_destroy_ifork_zone: | |
1759 | kmem_zone_destroy(xfs_ifork_zone); | |
1760 | out_destroy_dabuf_zone: | |
1761 | kmem_zone_destroy(xfs_dabuf_zone); | |
1762 | out_destroy_da_state_zone: | |
1763 | kmem_zone_destroy(xfs_da_state_zone); | |
1764 | out_destroy_btree_cur_zone: | |
1765 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1766 | out_destroy_bmap_free_item_zone: | |
1767 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1768 | out_destroy_log_ticket_zone: | |
1769 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1770 | out_destroy_ioend_pool: | |
1771 | mempool_destroy(xfs_ioend_pool); | |
1772 | out_destroy_ioend_zone: | |
1773 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1774 | out: |
1775 | return -ENOMEM; | |
1776 | } | |
1777 | ||
1778 | STATIC void | |
1779 | xfs_destroy_zones(void) | |
1780 | { | |
9f8868ff CH |
1781 | kmem_zone_destroy(xfs_ili_zone); |
1782 | kmem_zone_destroy(xfs_inode_zone); | |
1783 | kmem_zone_destroy(xfs_efi_zone); | |
1784 | kmem_zone_destroy(xfs_efd_zone); | |
1785 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1786 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1787 | kmem_zone_destroy(xfs_trans_zone); |
1788 | kmem_zone_destroy(xfs_ifork_zone); | |
1789 | kmem_zone_destroy(xfs_dabuf_zone); | |
1790 | kmem_zone_destroy(xfs_da_state_zone); | |
1791 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1792 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1793 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1794 | mempool_destroy(xfs_ioend_pool); | |
1795 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1796 | |
1797 | } | |
1da177e4 LT |
1798 | |
1799 | STATIC int __init | |
9f8868ff | 1800 | init_xfs_fs(void) |
1da177e4 LT |
1801 | { |
1802 | int error; | |
1da177e4 | 1803 | |
65795910 CH |
1804 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1805 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1806 | |
25e41b3d | 1807 | xfs_ioend_init(); |
9f8868ff | 1808 | xfs_dir_startup(); |
1da177e4 | 1809 | |
8758280f | 1810 | error = xfs_init_zones(); |
9f8868ff CH |
1811 | if (error) |
1812 | goto out; | |
1813 | ||
9f8868ff CH |
1814 | error = xfs_mru_cache_init(); |
1815 | if (error) | |
0b1b213f | 1816 | goto out_destroy_zones; |
9f8868ff CH |
1817 | |
1818 | error = xfs_filestream_init(); | |
1819 | if (error) | |
1820 | goto out_mru_cache_uninit; | |
1da177e4 | 1821 | |
ce8e922c | 1822 | error = xfs_buf_init(); |
9f8868ff CH |
1823 | if (error) |
1824 | goto out_filestream_uninit; | |
1825 | ||
1826 | error = xfs_init_procfs(); | |
1827 | if (error) | |
1828 | goto out_buf_terminate; | |
1829 | ||
1830 | error = xfs_sysctl_register(); | |
1831 | if (error) | |
1832 | goto out_cleanup_procfs; | |
1da177e4 | 1833 | |
1da177e4 LT |
1834 | vfs_initquota(); |
1835 | ||
1836 | error = register_filesystem(&xfs_fs_type); | |
1837 | if (error) | |
9f8868ff | 1838 | goto out_sysctl_unregister; |
1da177e4 LT |
1839 | return 0; |
1840 | ||
9f8868ff CH |
1841 | out_sysctl_unregister: |
1842 | xfs_sysctl_unregister(); | |
1843 | out_cleanup_procfs: | |
1844 | xfs_cleanup_procfs(); | |
1845 | out_buf_terminate: | |
ce8e922c | 1846 | xfs_buf_terminate(); |
9f8868ff CH |
1847 | out_filestream_uninit: |
1848 | xfs_filestream_uninit(); | |
1849 | out_mru_cache_uninit: | |
1850 | xfs_mru_cache_uninit(); | |
9f8868ff | 1851 | out_destroy_zones: |
8758280f | 1852 | xfs_destroy_zones(); |
9f8868ff | 1853 | out: |
1da177e4 LT |
1854 | return error; |
1855 | } | |
1856 | ||
1857 | STATIC void __exit | |
9f8868ff | 1858 | exit_xfs_fs(void) |
1da177e4 LT |
1859 | { |
1860 | vfs_exitquota(); | |
1da177e4 | 1861 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1862 | xfs_sysctl_unregister(); |
1863 | xfs_cleanup_procfs(); | |
ce8e922c | 1864 | xfs_buf_terminate(); |
9f8868ff CH |
1865 | xfs_filestream_uninit(); |
1866 | xfs_mru_cache_uninit(); | |
8758280f | 1867 | xfs_destroy_zones(); |
1da177e4 LT |
1868 | } |
1869 | ||
1870 | module_init(init_xfs_fs); | |
1871 | module_exit(exit_xfs_fs); | |
1872 | ||
1873 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1874 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1875 | MODULE_LICENSE("GPL"); |