]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
0b1b213f | 18 | |
1da177e4 | 19 | #include "xfs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
28 | #include "xfs_dmapi.h" | |
29 | #include "xfs_quota.h" | |
30 | #include "xfs_mount.h" | |
1da177e4 | 31 | #include "xfs_bmap_btree.h" |
a844f451 | 32 | #include "xfs_alloc_btree.h" |
1da177e4 | 33 | #include "xfs_ialloc_btree.h" |
1da177e4 | 34 | #include "xfs_dir2_sf.h" |
a844f451 | 35 | #include "xfs_attr_sf.h" |
1da177e4 LT |
36 | #include "xfs_dinode.h" |
37 | #include "xfs_inode.h" | |
a844f451 | 38 | #include "xfs_btree.h" |
8c4ed633 | 39 | #include "xfs_btree_trace.h" |
a844f451 | 40 | #include "xfs_ialloc.h" |
1da177e4 | 41 | #include "xfs_bmap.h" |
1da177e4 LT |
42 | #include "xfs_rtalloc.h" |
43 | #include "xfs_error.h" | |
44 | #include "xfs_itable.h" | |
9909c4aa | 45 | #include "xfs_fsops.h" |
1da177e4 | 46 | #include "xfs_rw.h" |
1da177e4 LT |
47 | #include "xfs_attr.h" |
48 | #include "xfs_buf_item.h" | |
49 | #include "xfs_utils.h" | |
739bfb2a | 50 | #include "xfs_vnodeops.h" |
1da177e4 | 51 | #include "xfs_version.h" |
a67d7c5f | 52 | #include "xfs_log_priv.h" |
249a8c11 | 53 | #include "xfs_trans_priv.h" |
48b62a1a | 54 | #include "xfs_filestream.h" |
9f8868ff | 55 | #include "xfs_da_btree.h" |
9f8868ff CH |
56 | #include "xfs_extfree_item.h" |
57 | #include "xfs_mru_cache.h" | |
58 | #include "xfs_inode_item.h" | |
fe4fa4b8 | 59 | #include "xfs_sync.h" |
0b1b213f | 60 | #include "xfs_trace.h" |
1da177e4 LT |
61 | |
62 | #include <linux/namei.h> | |
63 | #include <linux/init.h> | |
64 | #include <linux/mount.h> | |
0829c360 | 65 | #include <linux/mempool.h> |
1da177e4 | 66 | #include <linux/writeback.h> |
4df08c52 | 67 | #include <linux/kthread.h> |
7dfb7103 | 68 | #include <linux/freezer.h> |
62a877e3 | 69 | #include <linux/parser.h> |
1da177e4 | 70 | |
b87221de | 71 | static const struct super_operations xfs_super_operations; |
7989cb8e | 72 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 73 | mempool_t *xfs_ioend_pool; |
1da177e4 | 74 | |
a67d7c5f DC |
75 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
76 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
77 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
78 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
79 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
80 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
81 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
82 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
83 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
84 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
85 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
86 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
87 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
88 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
89 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
90 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
91 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
92 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
93 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
94 | * unwritten extent conversion */ | |
95 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
96 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ | |
97 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ | |
98 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
99 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
100 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
101 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
102 | * in stat(). */ | |
103 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
104 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
105 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
106 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
107 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
108 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
109 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
110 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
111 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
112 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
113 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
114 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
115 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
116 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
117 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
118 | #define MNTOPT_DMAPI "dmapi" /* DMI enabled (DMAPI / XDSM) */ | |
119 | #define MNTOPT_XDSM "xdsm" /* DMI enabled (DMAPI / XDSM) */ | |
120 | #define MNTOPT_DMI "dmi" /* DMI enabled (DMAPI / XDSM) */ | |
121 | ||
62a877e3 CH |
122 | /* |
123 | * Table driven mount option parser. | |
124 | * | |
125 | * Currently only used for remount, but it will be used for mount | |
126 | * in the future, too. | |
127 | */ | |
128 | enum { | |
129 | Opt_barrier, Opt_nobarrier, Opt_err | |
130 | }; | |
131 | ||
a447c093 | 132 | static const match_table_t tokens = { |
62a877e3 CH |
133 | {Opt_barrier, "barrier"}, |
134 | {Opt_nobarrier, "nobarrier"}, | |
135 | {Opt_err, NULL} | |
136 | }; | |
137 | ||
138 | ||
a67d7c5f DC |
139 | STATIC unsigned long |
140 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
141 | { | |
142 | int last, shift_left_factor = 0; | |
143 | char *value = s; | |
144 | ||
145 | last = strlen(value) - 1; | |
146 | if (value[last] == 'K' || value[last] == 'k') { | |
147 | shift_left_factor = 10; | |
148 | value[last] = '\0'; | |
149 | } | |
150 | if (value[last] == 'M' || value[last] == 'm') { | |
151 | shift_left_factor = 20; | |
152 | value[last] = '\0'; | |
153 | } | |
154 | if (value[last] == 'G' || value[last] == 'g') { | |
155 | shift_left_factor = 30; | |
156 | value[last] = '\0'; | |
157 | } | |
158 | ||
159 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
160 | } | |
161 | ||
9d565ffa CH |
162 | /* |
163 | * This function fills in xfs_mount_t fields based on mount args. | |
164 | * Note: the superblock has _not_ yet been read in. | |
165 | * | |
166 | * Note that this function leaks the various device name allocations on | |
167 | * failure. The caller takes care of them. | |
168 | */ | |
a67d7c5f DC |
169 | STATIC int |
170 | xfs_parseargs( | |
171 | struct xfs_mount *mp, | |
172 | char *options, | |
9d565ffa | 173 | char **mtpt) |
a67d7c5f | 174 | { |
9d565ffa | 175 | struct super_block *sb = mp->m_super; |
a67d7c5f | 176 | char *this_char, *value, *eov; |
9d565ffa CH |
177 | int dsunit = 0; |
178 | int dswidth = 0; | |
179 | int iosize = 0; | |
1bd960ee | 180 | int dmapi_implies_ikeep = 1; |
a5687787 | 181 | __uint8_t iosizelog = 0; |
9d565ffa CH |
182 | |
183 | /* | |
184 | * Copy binary VFS mount flags we are interested in. | |
185 | */ | |
186 | if (sb->s_flags & MS_RDONLY) | |
187 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
188 | if (sb->s_flags & MS_DIRSYNC) | |
189 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
190 | if (sb->s_flags & MS_SYNCHRONOUS) | |
191 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
192 | ||
193 | /* | |
194 | * Set some default flags that could be cleared by the mount option | |
195 | * parsing. | |
196 | */ | |
197 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
198 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
199 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 200 | |
9d565ffa CH |
201 | /* |
202 | * These can be overridden by the mount option parsing. | |
203 | */ | |
204 | mp->m_logbufs = -1; | |
205 | mp->m_logbsize = -1; | |
a67d7c5f DC |
206 | |
207 | if (!options) | |
208 | goto done; | |
209 | ||
a67d7c5f DC |
210 | while ((this_char = strsep(&options, ",")) != NULL) { |
211 | if (!*this_char) | |
212 | continue; | |
213 | if ((value = strchr(this_char, '=')) != NULL) | |
214 | *value++ = 0; | |
215 | ||
216 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
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_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
224 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
225 | if (!value || !*value) { | |
226 | cmn_err(CE_WARN, | |
227 | "XFS: %s option requires an argument", | |
228 | this_char); | |
229 | return EINVAL; | |
230 | } | |
9d565ffa | 231 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
232 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
233 | if (!value || !*value) { | |
234 | cmn_err(CE_WARN, | |
235 | "XFS: %s option requires an argument", | |
236 | this_char); | |
237 | return EINVAL; | |
238 | } | |
9d565ffa CH |
239 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
240 | if (!mp->m_logname) | |
241 | return ENOMEM; | |
a67d7c5f DC |
242 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
243 | if (!value || !*value) { | |
244 | cmn_err(CE_WARN, | |
245 | "XFS: %s option requires an argument", | |
246 | this_char); | |
247 | return EINVAL; | |
248 | } | |
9d565ffa CH |
249 | *mtpt = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
250 | if (!*mtpt) | |
251 | return ENOMEM; | |
a67d7c5f DC |
252 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
253 | if (!value || !*value) { | |
254 | cmn_err(CE_WARN, | |
255 | "XFS: %s option requires an argument", | |
256 | this_char); | |
257 | return EINVAL; | |
258 | } | |
9d565ffa CH |
259 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
260 | if (!mp->m_rtname) | |
261 | return ENOMEM; | |
a67d7c5f DC |
262 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
263 | if (!value || !*value) { | |
264 | cmn_err(CE_WARN, | |
265 | "XFS: %s option requires an argument", | |
266 | this_char); | |
267 | return EINVAL; | |
268 | } | |
269 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 270 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
271 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
272 | if (!value || !*value) { | |
273 | cmn_err(CE_WARN, | |
274 | "XFS: %s option requires an argument", | |
275 | this_char); | |
276 | return EINVAL; | |
277 | } | |
278 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 279 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
280 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
281 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
282 | mp->m_flags |= XFS_MOUNT_GRPID; | |
283 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
284 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
285 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
286 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 287 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 288 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { |
9d565ffa | 289 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; |
a67d7c5f | 290 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 291 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 292 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 293 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 294 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 295 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
296 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
297 | if (!value || !*value) { | |
298 | cmn_err(CE_WARN, | |
299 | "XFS: %s option requires an argument", | |
300 | this_char); | |
301 | return EINVAL; | |
302 | } | |
303 | dsunit = simple_strtoul(value, &eov, 10); | |
304 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
305 | if (!value || !*value) { | |
306 | cmn_err(CE_WARN, | |
307 | "XFS: %s option requires an argument", | |
308 | this_char); | |
309 | return EINVAL; | |
310 | } | |
311 | dswidth = simple_strtoul(value, &eov, 10); | |
312 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
9d565ffa | 313 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f DC |
314 | #if !XFS_BIG_INUMS |
315 | cmn_err(CE_WARN, | |
316 | "XFS: %s option not allowed on this system", | |
317 | this_char); | |
318 | return EINVAL; | |
319 | #endif | |
320 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 321 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 322 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 323 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 324 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 325 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 326 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 327 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 328 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
1bd960ee | 329 | dmapi_implies_ikeep = 0; |
9d565ffa | 330 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 331 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 332 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 333 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 334 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 335 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 336 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 337 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
338 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
339 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 340 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 341 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 342 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
9d565ffa CH |
343 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
344 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | | |
469fc23d | 345 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
9d565ffa | 346 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
a67d7c5f DC |
347 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
348 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
349 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
350 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
351 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
352 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
353 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
354 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
355 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
356 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
357 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
358 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
359 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 360 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
361 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
362 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
363 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
364 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
365 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
366 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 367 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
368 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
369 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f | 370 | } else if (!strcmp(this_char, MNTOPT_DMAPI)) { |
9d565ffa | 371 | mp->m_flags |= XFS_MOUNT_DMAPI; |
a67d7c5f | 372 | } else if (!strcmp(this_char, MNTOPT_XDSM)) { |
9d565ffa | 373 | mp->m_flags |= XFS_MOUNT_DMAPI; |
a67d7c5f | 374 | } else if (!strcmp(this_char, MNTOPT_DMI)) { |
9d565ffa | 375 | mp->m_flags |= XFS_MOUNT_DMAPI; |
a67d7c5f DC |
376 | } else if (!strcmp(this_char, "ihashsize")) { |
377 | cmn_err(CE_WARN, | |
378 | "XFS: ihashsize no longer used, option is deprecated."); | |
379 | } else if (!strcmp(this_char, "osyncisdsync")) { | |
380 | /* no-op, this is now the default */ | |
381 | cmn_err(CE_WARN, | |
382 | "XFS: osyncisdsync is now the default, option is deprecated."); | |
383 | } else if (!strcmp(this_char, "irixsgid")) { | |
384 | cmn_err(CE_WARN, | |
385 | "XFS: irixsgid is now a sysctl(2) variable, option is deprecated."); | |
386 | } else { | |
387 | cmn_err(CE_WARN, | |
388 | "XFS: unknown mount option [%s].", this_char); | |
389 | return EINVAL; | |
390 | } | |
391 | } | |
392 | ||
9d565ffa CH |
393 | /* |
394 | * no recovery flag requires a read-only mount | |
395 | */ | |
396 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
397 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
398 | cmn_err(CE_WARN, "XFS: no-recovery mounts must be read-only."); | |
399 | return EINVAL; | |
a67d7c5f DC |
400 | } |
401 | ||
9d565ffa | 402 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
a67d7c5f DC |
403 | cmn_err(CE_WARN, |
404 | "XFS: sunit and swidth options incompatible with the noalign option"); | |
405 | return EINVAL; | |
406 | } | |
407 | ||
7d095257 CH |
408 | #ifndef CONFIG_XFS_QUOTA |
409 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
410 | cmn_err(CE_WARN, | |
411 | "XFS: quota support not available in this kernel."); | |
412 | return EINVAL; | |
413 | } | |
414 | #endif | |
415 | ||
9d565ffa CH |
416 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
417 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
a67d7c5f DC |
418 | cmn_err(CE_WARN, |
419 | "XFS: cannot mount with both project and group quota"); | |
420 | return EINVAL; | |
421 | } | |
422 | ||
9d565ffa | 423 | if ((mp->m_flags & XFS_MOUNT_DMAPI) && (!*mtpt || *mtpt[0] == '\0')) { |
a67d7c5f DC |
424 | printk("XFS: %s option needs the mount point option as well\n", |
425 | MNTOPT_DMAPI); | |
426 | return EINVAL; | |
427 | } | |
428 | ||
429 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { | |
430 | cmn_err(CE_WARN, | |
431 | "XFS: sunit and swidth must be specified together"); | |
432 | return EINVAL; | |
433 | } | |
434 | ||
435 | if (dsunit && (dswidth % dsunit != 0)) { | |
436 | cmn_err(CE_WARN, | |
437 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)", | |
438 | dswidth, dsunit); | |
439 | return EINVAL; | |
440 | } | |
441 | ||
442 | /* | |
443 | * Applications using DMI filesystems often expect the | |
444 | * inode generation number to be monotonically increasing. | |
445 | * If we delete inode chunks we break this assumption, so | |
446 | * keep unused inode chunks on disk for DMI filesystems | |
447 | * until we come up with a better solution. | |
448 | * Note that if "ikeep" or "noikeep" mount options are | |
449 | * supplied, then they are honored. | |
450 | */ | |
9d565ffa CH |
451 | if ((mp->m_flags & XFS_MOUNT_DMAPI) && dmapi_implies_ikeep) |
452 | mp->m_flags |= XFS_MOUNT_IKEEP; | |
a67d7c5f | 453 | |
9d565ffa CH |
454 | done: |
455 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
456 | /* | |
457 | * At this point the superblock has not been read | |
458 | * in, therefore we do not know the block size. | |
459 | * Before the mount call ends we will convert | |
460 | * these to FSBs. | |
461 | */ | |
a67d7c5f | 462 | if (dsunit) { |
9d565ffa CH |
463 | mp->m_dalign = dsunit; |
464 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 465 | } |
9d565ffa CH |
466 | |
467 | if (dswidth) | |
468 | mp->m_swidth = dswidth; | |
469 | } | |
470 | ||
471 | if (mp->m_logbufs != -1 && | |
472 | mp->m_logbufs != 0 && | |
473 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
474 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
475 | cmn_err(CE_WARN, | |
476 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
477 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
478 | return XFS_ERROR(EINVAL); | |
479 | } | |
480 | if (mp->m_logbsize != -1 && | |
481 | mp->m_logbsize != 0 && | |
482 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
483 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
484 | !is_power_of_2(mp->m_logbsize))) { | |
485 | cmn_err(CE_WARN, | |
486 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
487 | mp->m_logbsize); | |
488 | return XFS_ERROR(EINVAL); | |
489 | } | |
490 | ||
491 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
492 | if (!mp->m_fsname) | |
493 | return ENOMEM; | |
494 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
495 | ||
496 | if (iosizelog) { | |
497 | if (iosizelog > XFS_MAX_IO_LOG || | |
498 | iosizelog < XFS_MIN_IO_LOG) { | |
499 | cmn_err(CE_WARN, | |
500 | "XFS: invalid log iosize: %d [not %d-%d]", | |
501 | iosizelog, XFS_MIN_IO_LOG, | |
502 | XFS_MAX_IO_LOG); | |
503 | return XFS_ERROR(EINVAL); | |
504 | } | |
505 | ||
506 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
507 | mp->m_readio_log = iosizelog; | |
508 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
509 | } |
510 | ||
a67d7c5f DC |
511 | return 0; |
512 | } | |
513 | ||
514 | struct proc_xfs_info { | |
515 | int flag; | |
516 | char *str; | |
517 | }; | |
518 | ||
519 | STATIC int | |
520 | xfs_showargs( | |
521 | struct xfs_mount *mp, | |
522 | struct seq_file *m) | |
523 | { | |
524 | static struct proc_xfs_info xfs_info_set[] = { | |
525 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 526 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 527 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
528 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
529 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
530 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
531 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
532 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, | |
533 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, | |
534 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
535 | { XFS_MOUNT_DMAPI, "," MNTOPT_DMAPI }, | |
536 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, | |
537 | { 0, NULL } | |
538 | }; | |
539 | static struct proc_xfs_info xfs_info_unset[] = { | |
540 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
541 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
542 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
543 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
544 | { 0, NULL } | |
545 | }; | |
546 | struct proc_xfs_info *xfs_infop; | |
547 | ||
548 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
549 | if (mp->m_flags & xfs_infop->flag) | |
550 | seq_puts(m, xfs_infop->str); | |
551 | } | |
552 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
553 | if (!(mp->m_flags & xfs_infop->flag)) | |
554 | seq_puts(m, xfs_infop->str); | |
555 | } | |
556 | ||
557 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
558 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
559 | (int)(1 << mp->m_writeio_log) >> 10); | |
560 | ||
561 | if (mp->m_logbufs > 0) | |
562 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
563 | if (mp->m_logbsize > 0) | |
564 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
565 | ||
566 | if (mp->m_logname) | |
567 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
568 | if (mp->m_rtname) | |
569 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
570 | ||
571 | if (mp->m_dalign > 0) | |
572 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
573 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
574 | if (mp->m_swidth > 0) | |
575 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
576 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
577 | ||
578 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
579 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
580 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
581 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
582 | ||
988abe40 AE |
583 | /* Either project or group quotas can be active, not both */ |
584 | ||
585 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
586 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
587 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
588 | else | |
589 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
590 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
591 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
592 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
593 | else | |
594 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
595 | } | |
a67d7c5f DC |
596 | |
597 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
598 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
599 | ||
600 | return 0; | |
601 | } | |
1da177e4 LT |
602 | __uint64_t |
603 | xfs_max_file_offset( | |
604 | unsigned int blockshift) | |
605 | { | |
606 | unsigned int pagefactor = 1; | |
607 | unsigned int bitshift = BITS_PER_LONG - 1; | |
608 | ||
609 | /* Figure out maximum filesize, on Linux this can depend on | |
610 | * the filesystem blocksize (on 32 bit platforms). | |
611 | * __block_prepare_write does this in an [unsigned] long... | |
612 | * page->index << (PAGE_CACHE_SHIFT - bbits) | |
613 | * So, for page sized blocks (4K on 32 bit platforms), | |
614 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
615 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
616 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
617 | * Note1: get_block_t takes a long (implicit cast from above) | |
618 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
619 | * can optionally convert the [unsigned] long from above into | |
620 | * an [unsigned] long long. | |
621 | */ | |
622 | ||
623 | #if BITS_PER_LONG == 32 | |
90c699a9 | 624 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
625 | ASSERT(sizeof(sector_t) == 8); |
626 | pagefactor = PAGE_CACHE_SIZE; | |
627 | bitshift = BITS_PER_LONG; | |
628 | # else | |
629 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
630 | # endif | |
631 | #endif | |
632 | ||
633 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
634 | } | |
635 | ||
3180e66d | 636 | STATIC int |
1da177e4 LT |
637 | xfs_blkdev_get( |
638 | xfs_mount_t *mp, | |
639 | const char *name, | |
640 | struct block_device **bdevp) | |
641 | { | |
642 | int error = 0; | |
643 | ||
30c40d2c | 644 | *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); |
1da177e4 LT |
645 | if (IS_ERR(*bdevp)) { |
646 | error = PTR_ERR(*bdevp); | |
647 | printk("XFS: Invalid device [%s], error=%d\n", name, error); | |
648 | } | |
649 | ||
650 | return -error; | |
651 | } | |
652 | ||
3180e66d | 653 | STATIC void |
1da177e4 LT |
654 | xfs_blkdev_put( |
655 | struct block_device *bdev) | |
656 | { | |
657 | if (bdev) | |
30c40d2c | 658 | close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); |
1da177e4 LT |
659 | } |
660 | ||
f538d4da CH |
661 | /* |
662 | * Try to write out the superblock using barriers. | |
663 | */ | |
664 | STATIC int | |
665 | xfs_barrier_test( | |
666 | xfs_mount_t *mp) | |
667 | { | |
668 | xfs_buf_t *sbp = xfs_getsb(mp, 0); | |
669 | int error; | |
670 | ||
671 | XFS_BUF_UNDONE(sbp); | |
672 | XFS_BUF_UNREAD(sbp); | |
673 | XFS_BUF_UNDELAYWRITE(sbp); | |
674 | XFS_BUF_WRITE(sbp); | |
675 | XFS_BUF_UNASYNC(sbp); | |
676 | XFS_BUF_ORDERED(sbp); | |
677 | ||
678 | xfsbdstrat(mp, sbp); | |
679 | error = xfs_iowait(sbp); | |
680 | ||
681 | /* | |
682 | * Clear all the flags we set and possible error state in the | |
683 | * buffer. We only did the write to try out whether barriers | |
684 | * worked and shouldn't leave any traces in the superblock | |
685 | * buffer. | |
686 | */ | |
687 | XFS_BUF_DONE(sbp); | |
688 | XFS_BUF_ERROR(sbp, 0); | |
689 | XFS_BUF_UNORDERED(sbp); | |
690 | ||
691 | xfs_buf_relse(sbp); | |
692 | return error; | |
693 | } | |
694 | ||
d96f8f89 | 695 | STATIC void |
f538d4da CH |
696 | xfs_mountfs_check_barriers(xfs_mount_t *mp) |
697 | { | |
698 | int error; | |
699 | ||
700 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
701 | xfs_fs_cmn_err(CE_NOTE, mp, | |
702 | "Disabling barriers, not supported with external log device"); | |
703 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 704 | return; |
f538d4da CH |
705 | } |
706 | ||
b2ea401b NS |
707 | if (xfs_readonly_buftarg(mp->m_ddev_targp)) { |
708 | xfs_fs_cmn_err(CE_NOTE, mp, | |
709 | "Disabling barriers, underlying device is readonly"); | |
710 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
711 | return; | |
712 | } | |
713 | ||
f538d4da CH |
714 | error = xfs_barrier_test(mp); |
715 | if (error) { | |
716 | xfs_fs_cmn_err(CE_NOTE, mp, | |
717 | "Disabling barriers, trial barrier write failed"); | |
718 | mp->m_flags &= ~XFS_MOUNT_BARRIER; | |
4ef19ddd | 719 | return; |
f538d4da CH |
720 | } |
721 | } | |
722 | ||
723 | void | |
724 | xfs_blkdev_issue_flush( | |
725 | xfs_buftarg_t *buftarg) | |
726 | { | |
ce8e922c | 727 | blkdev_issue_flush(buftarg->bt_bdev, NULL); |
f538d4da | 728 | } |
1da177e4 | 729 | |
19f354d4 CH |
730 | STATIC void |
731 | xfs_close_devices( | |
732 | struct xfs_mount *mp) | |
733 | { | |
734 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 735 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 736 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 737 | xfs_blkdev_put(logdev); |
19f354d4 CH |
738 | } |
739 | if (mp->m_rtdev_targp) { | |
c032bfcf | 740 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 741 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 742 | xfs_blkdev_put(rtdev); |
19f354d4 | 743 | } |
b7963133 | 744 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
745 | } |
746 | ||
747 | /* | |
748 | * The file system configurations are: | |
749 | * (1) device (partition) with data and internal log | |
750 | * (2) logical volume with data and log subvolumes. | |
751 | * (3) logical volume with data, log, and realtime subvolumes. | |
752 | * | |
753 | * We only have to handle opening the log and realtime volumes here if | |
754 | * they are present. The data subvolume has already been opened by | |
755 | * get_sb_bdev() and is stored in sb->s_bdev. | |
756 | */ | |
757 | STATIC int | |
758 | xfs_open_devices( | |
9d565ffa | 759 | struct xfs_mount *mp) |
19f354d4 CH |
760 | { |
761 | struct block_device *ddev = mp->m_super->s_bdev; | |
762 | struct block_device *logdev = NULL, *rtdev = NULL; | |
763 | int error; | |
764 | ||
765 | /* | |
766 | * Open real time and log devices - order is important. | |
767 | */ | |
9d565ffa CH |
768 | if (mp->m_logname) { |
769 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
770 | if (error) |
771 | goto out; | |
772 | } | |
773 | ||
9d565ffa CH |
774 | if (mp->m_rtname) { |
775 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
776 | if (error) |
777 | goto out_close_logdev; | |
778 | ||
779 | if (rtdev == ddev || rtdev == logdev) { | |
780 | cmn_err(CE_WARN, | |
781 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
782 | error = EINVAL; | |
783 | goto out_close_rtdev; | |
784 | } | |
785 | } | |
786 | ||
787 | /* | |
788 | * Setup xfs_mount buffer target pointers | |
789 | */ | |
790 | error = ENOMEM; | |
791 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); | |
792 | if (!mp->m_ddev_targp) | |
793 | goto out_close_rtdev; | |
794 | ||
795 | if (rtdev) { | |
796 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); | |
797 | if (!mp->m_rtdev_targp) | |
798 | goto out_free_ddev_targ; | |
799 | } | |
800 | ||
801 | if (logdev && logdev != ddev) { | |
802 | mp->m_logdev_targp = xfs_alloc_buftarg(logdev, 1); | |
803 | if (!mp->m_logdev_targp) | |
804 | goto out_free_rtdev_targ; | |
805 | } else { | |
806 | mp->m_logdev_targp = mp->m_ddev_targp; | |
807 | } | |
808 | ||
809 | return 0; | |
810 | ||
811 | out_free_rtdev_targ: | |
812 | if (mp->m_rtdev_targp) | |
b7963133 | 813 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 814 | out_free_ddev_targ: |
b7963133 | 815 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
816 | out_close_rtdev: |
817 | if (rtdev) | |
818 | xfs_blkdev_put(rtdev); | |
819 | out_close_logdev: | |
820 | if (logdev && logdev != ddev) | |
821 | xfs_blkdev_put(logdev); | |
822 | out: | |
823 | return error; | |
824 | } | |
825 | ||
e34b562c CH |
826 | /* |
827 | * Setup xfs_mount buffer target pointers based on superblock | |
828 | */ | |
829 | STATIC int | |
830 | xfs_setup_devices( | |
831 | struct xfs_mount *mp) | |
832 | { | |
833 | int error; | |
19f354d4 | 834 | |
e34b562c CH |
835 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
836 | mp->m_sb.sb_sectsize); | |
837 | if (error) | |
838 | return error; | |
839 | ||
840 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
841 | unsigned int log_sector_size = BBSIZE; | |
842 | ||
843 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
844 | log_sector_size = mp->m_sb.sb_logsectsize; | |
845 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
846 | mp->m_sb.sb_blocksize, | |
847 | log_sector_size); | |
848 | if (error) | |
849 | return error; | |
850 | } | |
851 | if (mp->m_rtdev_targp) { | |
852 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
853 | mp->m_sb.sb_blocksize, | |
854 | mp->m_sb.sb_sectsize); | |
855 | if (error) | |
856 | return error; | |
857 | } | |
858 | ||
859 | return 0; | |
860 | } | |
19f354d4 | 861 | |
249a8c11 DC |
862 | /* |
863 | * XFS AIL push thread support | |
864 | */ | |
865 | void | |
866 | xfsaild_wakeup( | |
82fa9012 | 867 | struct xfs_ail *ailp, |
249a8c11 DC |
868 | xfs_lsn_t threshold_lsn) |
869 | { | |
82fa9012 DC |
870 | ailp->xa_target = threshold_lsn; |
871 | wake_up_process(ailp->xa_task); | |
249a8c11 DC |
872 | } |
873 | ||
3180e66d | 874 | STATIC int |
249a8c11 DC |
875 | xfsaild( |
876 | void *data) | |
877 | { | |
82fa9012 | 878 | struct xfs_ail *ailp = data; |
249a8c11 | 879 | xfs_lsn_t last_pushed_lsn = 0; |
453eac8a | 880 | long tout = 0; /* milliseconds */ |
249a8c11 DC |
881 | |
882 | while (!kthread_should_stop()) { | |
453eac8a DC |
883 | schedule_timeout_interruptible(tout ? |
884 | msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); | |
249a8c11 DC |
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( |
848ce8f7 | 933 | struct inode *inode) |
1da177e4 | 934 | { |
848ce8f7 CH |
935 | struct xfs_inode *ip = XFS_I(inode); |
936 | ||
937 | xfs_itrace_entry(ip); | |
99fa8cb3 DC |
938 | |
939 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
940 | |
941 | /* bad inode, get out here ASAP */ | |
942 | if (is_bad_inode(inode)) | |
943 | goto out_reclaim; | |
944 | ||
945 | xfs_ioend_wait(ip); | |
946 | ||
947 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); | |
948 | ||
949 | /* | |
950 | * We should never get here with one of the reclaim flags already set. | |
951 | */ | |
952 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
953 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
954 | ||
955 | /* | |
57817c68 DC |
956 | * We always use background reclaim here because even if the |
957 | * inode is clean, it still may be under IO and hence we have | |
958 | * to take the flush lock. The background reclaim path handles | |
959 | * this more efficiently than we can here, so simply let background | |
960 | * reclaim tear down all inodes. | |
848ce8f7 | 961 | */ |
848ce8f7 | 962 | out_reclaim: |
57817c68 | 963 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
964 | } |
965 | ||
07c8f675 DC |
966 | /* |
967 | * Slab object creation initialisation for the XFS inode. | |
968 | * This covers only the idempotent fields in the XFS inode; | |
969 | * all other fields need to be initialised on allocation | |
970 | * from the slab. This avoids the need to repeatedly intialise | |
971 | * fields in the xfs inode that left in the initialise state | |
972 | * when freeing the inode. | |
973 | */ | |
bf904248 DC |
974 | STATIC void |
975 | xfs_fs_inode_init_once( | |
07c8f675 DC |
976 | void *inode) |
977 | { | |
978 | struct xfs_inode *ip = inode; | |
979 | ||
980 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
981 | |
982 | /* vfs inode */ | |
983 | inode_init_once(VFS_I(ip)); | |
984 | ||
985 | /* xfs inode */ | |
07c8f675 DC |
986 | atomic_set(&ip->i_iocount, 0); |
987 | atomic_set(&ip->i_pincount, 0); | |
988 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
989 | init_waitqueue_head(&ip->i_ipin_wait); |
990 | /* | |
991 | * Because we want to use a counting completion, complete | |
992 | * the flush completion once to allow a single access to | |
993 | * the flush completion without blocking. | |
994 | */ | |
995 | init_completion(&ip->i_flush); | |
996 | complete(&ip->i_flush); | |
997 | ||
998 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
999 | "xfsino", ip->i_ino); | |
07c8f675 DC |
1000 | } |
1001 | ||
f9581b14 CH |
1002 | /* |
1003 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that | |
1004 | * we catch unlogged VFS level updates to the inode. Care must be taken | |
1005 | * here - the transaction code calls mark_inode_dirty_sync() to mark the | |
1006 | * VFS inode dirty in a transaction and clears the i_update_core field; | |
1007 | * it must clear the field after calling mark_inode_dirty_sync() to | |
1008 | * correctly indicate that the dirty state has been propagated into the | |
1009 | * inode log item. | |
1010 | * | |
1011 | * We need the barrier() to maintain correct ordering between unlogged | |
1012 | * updates and the transaction commit code that clears the i_update_core | |
1013 | * field. This requires all updates to be completed before marking the | |
1014 | * inode dirty. | |
1015 | */ | |
1016 | STATIC void | |
1017 | xfs_fs_dirty_inode( | |
1018 | struct inode *inode) | |
1019 | { | |
1020 | barrier(); | |
1021 | XFS_I(inode)->i_update_core = 1; | |
1022 | } | |
1023 | ||
07fec736 CH |
1024 | STATIC int |
1025 | xfs_log_inode( | |
1026 | struct xfs_inode *ip) | |
1027 | { | |
1028 | struct xfs_mount *mp = ip->i_mount; | |
1029 | struct xfs_trans *tp; | |
1030 | int error; | |
1031 | ||
1032 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1033 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); | |
1034 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); | |
1035 | ||
1036 | if (error) { | |
1037 | xfs_trans_cancel(tp, 0); | |
1038 | /* we need to return with the lock hold shared */ | |
1039 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1040 | return error; | |
1041 | } | |
1042 | ||
1043 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1044 | ||
1045 | /* | |
1046 | * Note - it's possible that we might have pushed ourselves out of the | |
1047 | * way during trans_reserve which would flush the inode. But there's | |
1048 | * no guarantee that the inode buffer has actually gone out yet (it's | |
1049 | * delwri). Plus the buffer could be pinned anyway if it's part of | |
1050 | * an inode in another recent transaction. So we play it safe and | |
1051 | * fire off the transaction anyway. | |
1052 | */ | |
1053 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
1054 | xfs_trans_ihold(tp, ip); | |
1055 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1056 | xfs_trans_set_sync(tp); | |
1057 | error = xfs_trans_commit(tp, 0); | |
1058 | xfs_ilock_demote(ip, XFS_ILOCK_EXCL); | |
1059 | ||
1060 | return error; | |
1061 | } | |
1062 | ||
1da177e4 | 1063 | STATIC int |
a50cd269 | 1064 | xfs_fs_write_inode( |
1da177e4 | 1065 | struct inode *inode, |
a9185b41 | 1066 | struct writeback_control *wbc) |
1da177e4 | 1067 | { |
2e656092 | 1068 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 1069 | struct xfs_mount *mp = ip->i_mount; |
07fec736 | 1070 | int error = EAGAIN; |
1da177e4 | 1071 | |
2e656092 | 1072 | xfs_itrace_entry(ip); |
d4bb6d06 CH |
1073 | |
1074 | if (XFS_FORCED_SHUTDOWN(mp)) | |
1075 | return XFS_ERROR(EIO); | |
1076 | ||
a9185b41 | 1077 | if (wbc->sync_mode == WB_SYNC_ALL) { |
07fec736 CH |
1078 | /* |
1079 | * Make sure the inode has hit stable storage. By using the | |
1080 | * log and the fsync transactions we reduce the IOs we have | |
1081 | * to do here from two (log and inode) to just the log. | |
1082 | * | |
1083 | * Note: We still need to do a delwri write of the inode after | |
1084 | * this to flush it to the backing buffer so that bulkstat | |
1085 | * works properly if this is the first time the inode has been | |
1086 | * written. Because we hold the ilock atomically over the | |
1087 | * transaction commit and the inode flush we are guaranteed | |
1088 | * that the inode is not pinned when it returns. If the flush | |
1089 | * lock is already held, then the inode has already been | |
1090 | * flushed once and we don't need to flush it again. Hence | |
1091 | * the code will only flush the inode if it isn't already | |
1092 | * being flushed. | |
1093 | */ | |
d4bb6d06 | 1094 | xfs_ilock(ip, XFS_ILOCK_SHARED); |
07fec736 CH |
1095 | if (ip->i_update_core) { |
1096 | error = xfs_log_inode(ip); | |
1097 | if (error) | |
1098 | goto out_unlock; | |
1099 | } | |
d4bb6d06 | 1100 | } else { |
07fec736 CH |
1101 | /* |
1102 | * We make this non-blocking if the inode is contended, return | |
1103 | * EAGAIN to indicate to the caller that they did not succeed. | |
1104 | * This prevents the flush path from blocking on inodes inside | |
1105 | * another operation right now, they get caught later by xfs_sync. | |
1106 | */ | |
d4bb6d06 CH |
1107 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
1108 | goto out; | |
07fec736 CH |
1109 | } |
1110 | ||
1111 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) | |
1112 | goto out_unlock; | |
d4bb6d06 | 1113 | |
07fec736 CH |
1114 | /* |
1115 | * Now we have the flush lock and the inode is not pinned, we can check | |
1116 | * if the inode is really clean as we know that there are no pending | |
1117 | * transaction completions, it is not waiting on the delayed write | |
1118 | * queue and there is no IO in progress. | |
1119 | */ | |
1120 | if (xfs_inode_clean(ip)) { | |
1121 | xfs_ifunlock(ip); | |
1122 | error = 0; | |
1123 | goto out_unlock; | |
d4bb6d06 | 1124 | } |
07fec736 | 1125 | error = xfs_iflush(ip, 0); |
d4bb6d06 CH |
1126 | |
1127 | out_unlock: | |
1128 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1129 | out: | |
e893bffd LM |
1130 | /* |
1131 | * if we failed to write out the inode then mark | |
1132 | * it dirty again so we'll try again later. | |
1133 | */ | |
1134 | if (error) | |
2e656092 | 1135 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
1136 | return -error; |
1137 | } | |
1138 | ||
1139 | STATIC void | |
a50cd269 | 1140 | xfs_fs_clear_inode( |
1da177e4 LT |
1141 | struct inode *inode) |
1142 | { | |
1543d79c | 1143 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 1144 | |
99fa8cb3 DC |
1145 | xfs_itrace_entry(ip); |
1146 | XFS_STATS_INC(vn_rele); | |
1147 | XFS_STATS_INC(vn_remove); | |
1148 | XFS_STATS_DEC(vn_active); | |
1149 | ||
033da48f CH |
1150 | /* |
1151 | * The iolock is used by the file system to coordinate reads, | |
1152 | * writes, and block truncates. Up to this point the lock | |
1153 | * protected concurrent accesses by users of the inode. But | |
1154 | * from here forward we're doing some final processing of the | |
1155 | * inode because we're done with it, and although we reuse the | |
1156 | * iolock for protection it is really a distinct lock class | |
1157 | * (in the lockdep sense) from before. To keep lockdep happy | |
1158 | * (and basically indicate what we are doing), we explicitly | |
1159 | * re-init the iolock here. | |
1160 | */ | |
1161 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
1162 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
1163 | ||
99fa8cb3 | 1164 | xfs_inactive(ip); |
56d433e4 | 1165 | } |
1da177e4 | 1166 | |
a738159d CH |
1167 | STATIC void |
1168 | xfs_free_fsname( | |
1169 | struct xfs_mount *mp) | |
1170 | { | |
1171 | kfree(mp->m_fsname); | |
1172 | kfree(mp->m_rtname); | |
1173 | kfree(mp->m_logname); | |
1174 | } | |
1175 | ||
1da177e4 | 1176 | STATIC void |
a50cd269 | 1177 | xfs_fs_put_super( |
1da177e4 LT |
1178 | struct super_block *sb) |
1179 | { | |
745f6919 | 1180 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1181 | |
a167b17e | 1182 | xfs_syncd_stop(mp); |
075fe102 CH |
1183 | |
1184 | if (!(sb->s_flags & MS_RDONLY)) { | |
1185 | /* | |
1186 | * XXX(hch): this should be SYNC_WAIT. | |
1187 | * | |
1188 | * Or more likely not needed at all because the VFS is already | |
1189 | * calling ->sync_fs after shutting down all filestem | |
1190 | * operations and just before calling ->put_super. | |
1191 | */ | |
1192 | xfs_sync_data(mp, 0); | |
1193 | xfs_sync_attr(mp, 0); | |
1194 | } | |
e48ad316 | 1195 | |
30ac0683 | 1196 | XFS_SEND_PREUNMOUNT(mp); |
e48ad316 CH |
1197 | |
1198 | /* | |
1199 | * Blow away any referenced inode in the filestreams cache. | |
1200 | * This can and will cause log traffic as inodes go inactive | |
1201 | * here. | |
1202 | */ | |
1203 | xfs_filestream_unmount(mp); | |
1204 | ||
1205 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1206 | |
30ac0683 | 1207 | XFS_SEND_UNMOUNT(mp); |
e48ad316 | 1208 | |
19f354d4 | 1209 | xfs_unmountfs(mp); |
6203300e | 1210 | xfs_freesb(mp); |
c962fb79 | 1211 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1212 | xfs_close_devices(mp); |
e48ad316 | 1213 | xfs_dmops_put(mp); |
a738159d | 1214 | xfs_free_fsname(mp); |
c962fb79 | 1215 | kfree(mp); |
1da177e4 LT |
1216 | } |
1217 | ||
1da177e4 | 1218 | STATIC int |
69961a26 | 1219 | xfs_fs_sync_fs( |
1da177e4 LT |
1220 | struct super_block *sb, |
1221 | int wait) | |
1222 | { | |
745f6919 | 1223 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1224 | int error; |
1da177e4 | 1225 | |
e893bffd | 1226 | /* |
69961a26 CH |
1227 | * Not much we can do for the first async pass. Writing out the |
1228 | * superblock would be counter-productive as we are going to redirty | |
1229 | * when writing out other data and metadata (and writing out a single | |
1230 | * block is quite fast anyway). | |
1231 | * | |
1232 | * Try to asynchronously kick off quota syncing at least. | |
e893bffd | 1233 | */ |
69961a26 CH |
1234 | if (!wait) { |
1235 | xfs_qm_sync(mp, SYNC_TRYLOCK); | |
1236 | return 0; | |
1237 | } | |
1238 | ||
1239 | error = xfs_quiesce_data(mp); | |
1240 | if (error) | |
1241 | return -error; | |
1da177e4 | 1242 | |
69961a26 | 1243 | if (laptop_mode) { |
74394496 | 1244 | int prev_sync_seq = mp->m_sync_seq; |
1da177e4 LT |
1245 | |
1246 | /* | |
1247 | * The disk must be active because we're syncing. | |
1248 | * We schedule xfssyncd now (now that the disk is | |
1249 | * active) instead of later (when it might not be). | |
1250 | */ | |
74394496 | 1251 | wake_up_process(mp->m_sync_task); |
1da177e4 LT |
1252 | /* |
1253 | * We have to wait for the sync iteration to complete. | |
1254 | * If we don't, the disk activity caused by the sync | |
1255 | * will come after the sync is completed, and that | |
1256 | * triggers another sync from laptop mode. | |
1257 | */ | |
74394496 CH |
1258 | wait_event(mp->m_wait_single_sync_task, |
1259 | mp->m_sync_seq != prev_sync_seq); | |
1da177e4 LT |
1260 | } |
1261 | ||
69961a26 | 1262 | return 0; |
1da177e4 LT |
1263 | } |
1264 | ||
1265 | STATIC int | |
a50cd269 | 1266 | xfs_fs_statfs( |
726c3342 | 1267 | struct dentry *dentry, |
1da177e4 LT |
1268 | struct kstatfs *statp) |
1269 | { | |
4ca488eb CH |
1270 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1271 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1272 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1273 | __uint64_t fakeinos, id; |
1274 | xfs_extlen_t lsize; | |
1275 | ||
1276 | statp->f_type = XFS_SB_MAGIC; | |
1277 | statp->f_namelen = MAXNAMELEN - 1; | |
1278 | ||
1279 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1280 | statp->f_fsid.val[0] = (u32)id; | |
1281 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1282 | ||
d4d90b57 | 1283 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1284 | |
1285 | spin_lock(&mp->m_sb_lock); | |
1286 | statp->f_bsize = sbp->sb_blocksize; | |
1287 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1288 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1289 | statp->f_bfree = statp->f_bavail = | |
1290 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1291 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1292 | statp->f_files = |
1293 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1294 | if (mp->m_maxicount) | |
a19d9f88 CH |
1295 | statp->f_files = min_t(typeof(statp->f_files), |
1296 | statp->f_files, | |
1297 | mp->m_maxicount); | |
4ca488eb CH |
1298 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); |
1299 | spin_unlock(&mp->m_sb_lock); | |
1300 | ||
7d095257 CH |
1301 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1302 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1303 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1304 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1305 | return 0; |
1da177e4 LT |
1306 | } |
1307 | ||
d5db0f97 ES |
1308 | STATIC void |
1309 | xfs_save_resvblks(struct xfs_mount *mp) | |
1310 | { | |
1311 | __uint64_t resblks = 0; | |
1312 | ||
1313 | mp->m_resblks_save = mp->m_resblks; | |
1314 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1315 | } | |
1316 | ||
1317 | STATIC void | |
1318 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1319 | { | |
1320 | __uint64_t resblks; | |
1321 | ||
1322 | if (mp->m_resblks_save) { | |
1323 | resblks = mp->m_resblks_save; | |
1324 | mp->m_resblks_save = 0; | |
1325 | } else | |
1326 | resblks = xfs_default_resblks(mp); | |
1327 | ||
1328 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1329 | } | |
1330 | ||
1da177e4 | 1331 | STATIC int |
a50cd269 | 1332 | xfs_fs_remount( |
1da177e4 LT |
1333 | struct super_block *sb, |
1334 | int *flags, | |
1335 | char *options) | |
1336 | { | |
745f6919 | 1337 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1338 | substring_t args[MAX_OPT_ARGS]; |
1339 | char *p; | |
7884bc86 | 1340 | int error; |
1da177e4 | 1341 | |
62a877e3 CH |
1342 | while ((p = strsep(&options, ",")) != NULL) { |
1343 | int token; | |
bdd907ba | 1344 | |
62a877e3 CH |
1345 | if (!*p) |
1346 | continue; | |
48b62a1a | 1347 | |
62a877e3 CH |
1348 | token = match_token(p, tokens, args); |
1349 | switch (token) { | |
1350 | case Opt_barrier: | |
48b62a1a | 1351 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1352 | |
1353 | /* | |
1354 | * Test if barriers are actually working if we can, | |
1355 | * else delay this check until the filesystem is | |
1356 | * marked writeable. | |
1357 | */ | |
1358 | if (!(mp->m_flags & XFS_MOUNT_RDONLY)) | |
1359 | xfs_mountfs_check_barriers(mp); | |
1360 | break; | |
1361 | case Opt_nobarrier: | |
48b62a1a | 1362 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1363 | break; |
1364 | default: | |
6efdf281 CH |
1365 | /* |
1366 | * Logically we would return an error here to prevent | |
1367 | * users from believing they might have changed | |
1368 | * mount options using remount which can't be changed. | |
1369 | * | |
1370 | * But unfortunately mount(8) adds all options from | |
1371 | * mtab and fstab to the mount arguments in some cases | |
1372 | * so we can't blindly reject options, but have to | |
1373 | * check for each specified option if it actually | |
1374 | * differs from the currently set option and only | |
1375 | * reject it if that's the case. | |
1376 | * | |
1377 | * Until that is implemented we return success for | |
1378 | * every remount request, and silently ignore all | |
1379 | * options that we can't actually change. | |
1380 | */ | |
1381 | #if 0 | |
62a877e3 CH |
1382 | printk(KERN_INFO |
1383 | "XFS: mount option \"%s\" not supported for remount\n", p); | |
1384 | return -EINVAL; | |
6efdf281 | 1385 | #else |
6c5e51da | 1386 | break; |
6efdf281 | 1387 | #endif |
48b62a1a | 1388 | } |
62a877e3 CH |
1389 | } |
1390 | ||
7884bc86 | 1391 | /* ro -> rw */ |
62a877e3 CH |
1392 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1393 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
1394 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1395 | xfs_mountfs_check_barriers(mp); | |
7884bc86 CH |
1396 | |
1397 | /* | |
1398 | * If this is the first remount to writeable state we | |
1399 | * might have some superblock changes to update. | |
1400 | */ | |
1401 | if (mp->m_update_flags) { | |
1402 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1403 | if (error) { | |
1404 | cmn_err(CE_WARN, | |
1405 | "XFS: failed to write sb changes"); | |
1406 | return error; | |
1407 | } | |
1408 | mp->m_update_flags = 0; | |
1409 | } | |
cbe132a8 DC |
1410 | |
1411 | /* | |
1412 | * Fill out the reserve pool if it is empty. Use the stashed | |
1413 | * value if it is non-zero, otherwise go with the default. | |
1414 | */ | |
d5db0f97 | 1415 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1416 | } |
1417 | ||
1418 | /* rw -> ro */ | |
1419 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1420 | /* |
1421 | * After we have synced the data but before we sync the | |
1422 | * metadata, we need to free up the reserve block pool so that | |
1423 | * the used block count in the superblock on disk is correct at | |
1424 | * the end of the remount. Stash the current reserve pool size | |
1425 | * so that if we get remounted rw, we can return it to the same | |
1426 | * size. | |
1427 | */ | |
cbe132a8 | 1428 | |
e9f1c6ee | 1429 | xfs_quiesce_data(mp); |
d5db0f97 | 1430 | xfs_save_resvblks(mp); |
76bf105c | 1431 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1432 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1433 | } | |
1434 | ||
62a877e3 | 1435 | return 0; |
1da177e4 LT |
1436 | } |
1437 | ||
9909c4aa CH |
1438 | /* |
1439 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1440 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1441 | * record to dirty the log in case of a crash while frozen. |
1442 | */ | |
c4be0c1d TS |
1443 | STATIC int |
1444 | xfs_fs_freeze( | |
1da177e4 LT |
1445 | struct super_block *sb) |
1446 | { | |
9909c4aa CH |
1447 | struct xfs_mount *mp = XFS_M(sb); |
1448 | ||
d5db0f97 | 1449 | xfs_save_resvblks(mp); |
76bf105c | 1450 | xfs_quiesce_attr(mp); |
c4be0c1d | 1451 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1452 | } |
1453 | ||
d5db0f97 ES |
1454 | STATIC int |
1455 | xfs_fs_unfreeze( | |
1456 | struct super_block *sb) | |
1457 | { | |
1458 | struct xfs_mount *mp = XFS_M(sb); | |
1459 | ||
1460 | xfs_restore_resvblks(mp); | |
1461 | return 0; | |
1462 | } | |
1463 | ||
1da177e4 | 1464 | STATIC int |
a50cd269 | 1465 | xfs_fs_show_options( |
1da177e4 LT |
1466 | struct seq_file *m, |
1467 | struct vfsmount *mnt) | |
1468 | { | |
745f6919 | 1469 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1470 | } |
1471 | ||
f8f15e42 CH |
1472 | /* |
1473 | * This function fills in xfs_mount_t fields based on mount args. | |
1474 | * Note: the superblock _has_ now been read in. | |
1475 | */ | |
1476 | STATIC int | |
1477 | xfs_finish_flags( | |
f8f15e42 CH |
1478 | struct xfs_mount *mp) |
1479 | { | |
1480 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1481 | ||
025dfdaf | 1482 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1483 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1484 | if (mp->m_logbsize <= 0 && |
1485 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1486 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1487 | } else if (mp->m_logbsize > 0 && |
1488 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
f8f15e42 CH |
1489 | cmn_err(CE_WARN, |
1490 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
1491 | return XFS_ERROR(EINVAL); | |
1492 | } | |
1493 | } else { | |
1494 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1495 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
f8f15e42 CH |
1496 | cmn_err(CE_WARN, |
1497 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
1498 | return XFS_ERROR(EINVAL); | |
1499 | } | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1504 | * told by noattr2 to turn it off | |
1505 | */ | |
1506 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1507 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1508 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1509 | ||
1510 | /* | |
1511 | * prohibit r/w mounts of read-only filesystems | |
1512 | */ | |
1513 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
1514 | cmn_err(CE_WARN, | |
1515 | "XFS: cannot mount a read-only filesystem as read-write"); | |
1516 | return XFS_ERROR(EROFS); | |
1517 | } | |
1518 | ||
f8f15e42 CH |
1519 | return 0; |
1520 | } | |
1521 | ||
1da177e4 | 1522 | STATIC int |
a50cd269 | 1523 | xfs_fs_fill_super( |
1da177e4 LT |
1524 | struct super_block *sb, |
1525 | void *data, | |
1526 | int silent) | |
1527 | { | |
f3dcc13f | 1528 | struct inode *root; |
745f6919 | 1529 | struct xfs_mount *mp = NULL; |
c962fb79 | 1530 | int flags = 0, error = ENOMEM; |
9d565ffa | 1531 | char *mtpt = NULL; |
bdd907ba | 1532 | |
c962fb79 CH |
1533 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1534 | if (!mp) | |
9d565ffa | 1535 | goto out; |
1da177e4 | 1536 | |
c962fb79 | 1537 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1538 | mutex_init(&mp->m_growlock); |
1539 | atomic_set(&mp->m_active_trans, 0); | |
74394496 CH |
1540 | INIT_LIST_HEAD(&mp->m_sync_list); |
1541 | spin_lock_init(&mp->m_sync_lock); | |
1542 | init_waitqueue_head(&mp->m_wait_single_sync_task); | |
1543 | ||
b267ce99 CH |
1544 | mp->m_super = sb; |
1545 | sb->s_fs_info = mp; | |
1da177e4 | 1546 | |
9d565ffa | 1547 | error = xfs_parseargs(mp, (char *)data, &mtpt); |
745f6919 | 1548 | if (error) |
9d565ffa | 1549 | goto out_free_fsname; |
1da177e4 LT |
1550 | |
1551 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1552 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1553 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1554 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1555 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1556 | #endif |
a50cd269 | 1557 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1558 | |
9d565ffa | 1559 | error = xfs_dmops_get(mp); |
f8f15e42 | 1560 | if (error) |
9d565ffa | 1561 | goto out_free_fsname; |
1da177e4 | 1562 | |
9d565ffa | 1563 | if (silent) |
f8f15e42 CH |
1564 | flags |= XFS_MFSI_QUIET; |
1565 | ||
9d565ffa | 1566 | error = xfs_open_devices(mp); |
19f354d4 | 1567 | if (error) |
7d095257 | 1568 | goto out_put_dmops; |
f8f15e42 | 1569 | |
c962fb79 CH |
1570 | if (xfs_icsb_init_counters(mp)) |
1571 | mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB; | |
1572 | ||
f8f15e42 CH |
1573 | error = xfs_readsb(mp, flags); |
1574 | if (error) | |
9d565ffa CH |
1575 | goto out_destroy_counters; |
1576 | ||
1577 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1578 | if (error) |
effa2eda | 1579 | goto out_free_sb; |
f8f15e42 | 1580 | |
e34b562c | 1581 | error = xfs_setup_devices(mp); |
19f354d4 | 1582 | if (error) |
effa2eda | 1583 | goto out_free_sb; |
f8f15e42 CH |
1584 | |
1585 | if (mp->m_flags & XFS_MOUNT_BARRIER) | |
1586 | xfs_mountfs_check_barriers(mp); | |
1587 | ||
1588 | error = xfs_filestream_mount(mp); | |
1589 | if (error) | |
effa2eda | 1590 | goto out_free_sb; |
f8f15e42 | 1591 | |
4249023a | 1592 | error = xfs_mountfs(mp); |
f8f15e42 | 1593 | if (error) |
120226c1 | 1594 | goto out_filestream_unmount; |
f8f15e42 | 1595 | |
9d565ffa | 1596 | XFS_SEND_MOUNT(mp, DM_RIGHT_NULL, mtpt, mp->m_fsname); |
f8f15e42 | 1597 | |
4ca488eb CH |
1598 | sb->s_magic = XFS_SB_MAGIC; |
1599 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1600 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1601 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1602 | sb->s_time_gran = 1; | |
1603 | set_posix_acl_flag(sb); | |
1604 | ||
01651646 | 1605 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1606 | if (!root) { |
cbc89dcf | 1607 | error = ENOENT; |
1da177e4 | 1608 | goto fail_unmount; |
cbc89dcf | 1609 | } |
f3dcc13f CH |
1610 | if (is_bad_inode(root)) { |
1611 | error = EINVAL; | |
1da177e4 LT |
1612 | goto fail_vnrele; |
1613 | } | |
f3dcc13f CH |
1614 | sb->s_root = d_alloc_root(root); |
1615 | if (!sb->s_root) { | |
1616 | error = ENOMEM; | |
1da177e4 LT |
1617 | goto fail_vnrele; |
1618 | } | |
74394496 | 1619 | |
a167b17e DC |
1620 | error = xfs_syncd_init(mp); |
1621 | if (error) | |
1da177e4 | 1622 | goto fail_vnrele; |
74394496 | 1623 | |
9d565ffa | 1624 | kfree(mtpt); |
1da177e4 LT |
1625 | return 0; |
1626 | ||
120226c1 CH |
1627 | out_filestream_unmount: |
1628 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1629 | out_free_sb: |
1630 | xfs_freesb(mp); | |
9d565ffa | 1631 | out_destroy_counters: |
c962fb79 | 1632 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1633 | xfs_close_devices(mp); |
19f354d4 | 1634 | out_put_dmops: |
f8f15e42 | 1635 | xfs_dmops_put(mp); |
9d565ffa CH |
1636 | out_free_fsname: |
1637 | xfs_free_fsname(mp); | |
1638 | kfree(mtpt); | |
c962fb79 | 1639 | kfree(mp); |
9d565ffa | 1640 | out: |
c962fb79 | 1641 | return -error; |
f8f15e42 CH |
1642 | |
1643 | fail_vnrele: | |
1da177e4 LT |
1644 | if (sb->s_root) { |
1645 | dput(sb->s_root); | |
1646 | sb->s_root = NULL; | |
1647 | } else { | |
f3dcc13f | 1648 | iput(root); |
1da177e4 LT |
1649 | } |
1650 | ||
f8f15e42 | 1651 | fail_unmount: |
e48ad316 CH |
1652 | /* |
1653 | * Blow away any referenced inode in the filestreams cache. | |
1654 | * This can and will cause log traffic as inodes go inactive | |
1655 | * here. | |
1656 | */ | |
1657 | xfs_filestream_unmount(mp); | |
1658 | ||
1659 | XFS_bflush(mp->m_ddev_targp); | |
e48ad316 | 1660 | |
19f354d4 | 1661 | xfs_unmountfs(mp); |
6203300e | 1662 | goto out_free_sb; |
1da177e4 LT |
1663 | } |
1664 | ||
454e2398 | 1665 | STATIC int |
a50cd269 | 1666 | xfs_fs_get_sb( |
1da177e4 LT |
1667 | struct file_system_type *fs_type, |
1668 | int flags, | |
1669 | const char *dev_name, | |
454e2398 DH |
1670 | void *data, |
1671 | struct vfsmount *mnt) | |
1da177e4 | 1672 | { |
454e2398 DH |
1673 | return get_sb_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super, |
1674 | mnt); | |
a50cd269 NS |
1675 | } |
1676 | ||
b87221de | 1677 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1678 | .alloc_inode = xfs_fs_alloc_inode, |
1679 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1680 | .dirty_inode = xfs_fs_dirty_inode, |
a50cd269 NS |
1681 | .write_inode = xfs_fs_write_inode, |
1682 | .clear_inode = xfs_fs_clear_inode, | |
1683 | .put_super = xfs_fs_put_super, | |
69961a26 | 1684 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1685 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1686 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1687 | .statfs = xfs_fs_statfs, |
1688 | .remount_fs = xfs_fs_remount, | |
1689 | .show_options = xfs_fs_show_options, | |
1da177e4 LT |
1690 | }; |
1691 | ||
5085b607 | 1692 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1693 | .owner = THIS_MODULE, |
1694 | .name = "xfs", | |
a50cd269 | 1695 | .get_sb = xfs_fs_get_sb, |
1da177e4 LT |
1696 | .kill_sb = kill_block_super, |
1697 | .fs_flags = FS_REQUIRES_DEV, | |
1698 | }; | |
1699 | ||
9f8868ff CH |
1700 | STATIC int __init |
1701 | xfs_init_zones(void) | |
1702 | { | |
9f8868ff CH |
1703 | |
1704 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1705 | if (!xfs_ioend_zone) | |
bf904248 | 1706 | goto out; |
9f8868ff CH |
1707 | |
1708 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1709 | xfs_ioend_zone); | |
1710 | if (!xfs_ioend_pool) | |
1711 | goto out_destroy_ioend_zone; | |
1712 | ||
1713 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1714 | "xfs_log_ticket"); | |
1715 | if (!xfs_log_ticket_zone) | |
1716 | goto out_destroy_ioend_pool; | |
1717 | ||
1718 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1719 | "xfs_bmap_free_item"); | |
1720 | if (!xfs_bmap_free_item_zone) | |
1721 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1722 | |
9f8868ff CH |
1723 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1724 | "xfs_btree_cur"); | |
1725 | if (!xfs_btree_cur_zone) | |
1726 | goto out_destroy_bmap_free_item_zone; | |
1727 | ||
1728 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1729 | "xfs_da_state"); | |
1730 | if (!xfs_da_state_zone) | |
1731 | goto out_destroy_btree_cur_zone; | |
1732 | ||
1733 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1734 | if (!xfs_dabuf_zone) | |
1735 | goto out_destroy_da_state_zone; | |
1736 | ||
1737 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1738 | if (!xfs_ifork_zone) | |
1739 | goto out_destroy_dabuf_zone; | |
1740 | ||
1741 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1742 | if (!xfs_trans_zone) | |
1743 | goto out_destroy_ifork_zone; | |
1744 | ||
1745 | /* | |
1746 | * The size of the zone allocated buf log item is the maximum | |
1747 | * size possible under XFS. This wastes a little bit of memory, | |
1748 | * but it is much faster. | |
1749 | */ | |
1750 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
1751 | (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) / | |
1752 | NBWORD) * sizeof(int))), "xfs_buf_item"); | |
1753 | if (!xfs_buf_item_zone) | |
1754 | goto out_destroy_trans_zone; | |
1755 | ||
1756 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1757 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1758 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1759 | if (!xfs_efd_zone) | |
1760 | goto out_destroy_buf_item_zone; | |
1761 | ||
1762 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1763 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1764 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1765 | if (!xfs_efi_zone) | |
1766 | goto out_destroy_efd_zone; | |
1767 | ||
1768 | xfs_inode_zone = | |
1769 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1770 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1771 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1772 | if (!xfs_inode_zone) |
1773 | goto out_destroy_efi_zone; | |
1774 | ||
1775 | xfs_ili_zone = | |
1776 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1777 | KM_ZONE_SPREAD, NULL); | |
1778 | if (!xfs_ili_zone) | |
1779 | goto out_destroy_inode_zone; | |
1780 | ||
9f8868ff CH |
1781 | return 0; |
1782 | ||
9f8868ff CH |
1783 | out_destroy_inode_zone: |
1784 | kmem_zone_destroy(xfs_inode_zone); | |
1785 | out_destroy_efi_zone: | |
1786 | kmem_zone_destroy(xfs_efi_zone); | |
1787 | out_destroy_efd_zone: | |
1788 | kmem_zone_destroy(xfs_efd_zone); | |
1789 | out_destroy_buf_item_zone: | |
1790 | kmem_zone_destroy(xfs_buf_item_zone); | |
1791 | out_destroy_trans_zone: | |
1792 | kmem_zone_destroy(xfs_trans_zone); | |
1793 | out_destroy_ifork_zone: | |
1794 | kmem_zone_destroy(xfs_ifork_zone); | |
1795 | out_destroy_dabuf_zone: | |
1796 | kmem_zone_destroy(xfs_dabuf_zone); | |
1797 | out_destroy_da_state_zone: | |
1798 | kmem_zone_destroy(xfs_da_state_zone); | |
1799 | out_destroy_btree_cur_zone: | |
1800 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1801 | out_destroy_bmap_free_item_zone: | |
1802 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1803 | out_destroy_log_ticket_zone: | |
1804 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1805 | out_destroy_ioend_pool: | |
1806 | mempool_destroy(xfs_ioend_pool); | |
1807 | out_destroy_ioend_zone: | |
1808 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1809 | out: |
1810 | return -ENOMEM; | |
1811 | } | |
1812 | ||
1813 | STATIC void | |
1814 | xfs_destroy_zones(void) | |
1815 | { | |
9f8868ff CH |
1816 | kmem_zone_destroy(xfs_ili_zone); |
1817 | kmem_zone_destroy(xfs_inode_zone); | |
1818 | kmem_zone_destroy(xfs_efi_zone); | |
1819 | kmem_zone_destroy(xfs_efd_zone); | |
1820 | kmem_zone_destroy(xfs_buf_item_zone); | |
1821 | kmem_zone_destroy(xfs_trans_zone); | |
1822 | kmem_zone_destroy(xfs_ifork_zone); | |
1823 | kmem_zone_destroy(xfs_dabuf_zone); | |
1824 | kmem_zone_destroy(xfs_da_state_zone); | |
1825 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1826 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1827 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1828 | mempool_destroy(xfs_ioend_pool); | |
1829 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1830 | |
1831 | } | |
1da177e4 LT |
1832 | |
1833 | STATIC int __init | |
9f8868ff | 1834 | init_xfs_fs(void) |
1da177e4 LT |
1835 | { |
1836 | int error; | |
1da177e4 | 1837 | |
65795910 CH |
1838 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1839 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1840 | |
25e41b3d | 1841 | xfs_ioend_init(); |
9f8868ff | 1842 | xfs_dir_startup(); |
1da177e4 | 1843 | |
8758280f | 1844 | error = xfs_init_zones(); |
9f8868ff CH |
1845 | if (error) |
1846 | goto out; | |
1847 | ||
9f8868ff CH |
1848 | error = xfs_mru_cache_init(); |
1849 | if (error) | |
0b1b213f | 1850 | goto out_destroy_zones; |
9f8868ff CH |
1851 | |
1852 | error = xfs_filestream_init(); | |
1853 | if (error) | |
1854 | goto out_mru_cache_uninit; | |
1da177e4 | 1855 | |
ce8e922c | 1856 | error = xfs_buf_init(); |
9f8868ff CH |
1857 | if (error) |
1858 | goto out_filestream_uninit; | |
1859 | ||
1860 | error = xfs_init_procfs(); | |
1861 | if (error) | |
1862 | goto out_buf_terminate; | |
1863 | ||
1864 | error = xfs_sysctl_register(); | |
1865 | if (error) | |
1866 | goto out_cleanup_procfs; | |
1da177e4 | 1867 | |
1da177e4 LT |
1868 | vfs_initquota(); |
1869 | ||
1870 | error = register_filesystem(&xfs_fs_type); | |
1871 | if (error) | |
9f8868ff | 1872 | goto out_sysctl_unregister; |
1da177e4 LT |
1873 | return 0; |
1874 | ||
9f8868ff CH |
1875 | out_sysctl_unregister: |
1876 | xfs_sysctl_unregister(); | |
1877 | out_cleanup_procfs: | |
1878 | xfs_cleanup_procfs(); | |
1879 | out_buf_terminate: | |
ce8e922c | 1880 | xfs_buf_terminate(); |
9f8868ff CH |
1881 | out_filestream_uninit: |
1882 | xfs_filestream_uninit(); | |
1883 | out_mru_cache_uninit: | |
1884 | xfs_mru_cache_uninit(); | |
9f8868ff | 1885 | out_destroy_zones: |
8758280f | 1886 | xfs_destroy_zones(); |
9f8868ff | 1887 | out: |
1da177e4 LT |
1888 | return error; |
1889 | } | |
1890 | ||
1891 | STATIC void __exit | |
9f8868ff | 1892 | exit_xfs_fs(void) |
1da177e4 LT |
1893 | { |
1894 | vfs_exitquota(); | |
1da177e4 | 1895 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1896 | xfs_sysctl_unregister(); |
1897 | xfs_cleanup_procfs(); | |
ce8e922c | 1898 | xfs_buf_terminate(); |
9f8868ff CH |
1899 | xfs_filestream_uninit(); |
1900 | xfs_mru_cache_uninit(); | |
8758280f | 1901 | xfs_destroy_zones(); |
1da177e4 LT |
1902 | } |
1903 | ||
1904 | module_init(init_xfs_fs); | |
1905 | module_exit(exit_xfs_fs); | |
1906 | ||
1907 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1908 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1909 | MODULE_LICENSE("GPL"); |