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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 NS |
35 | #include "xfs_btree.h" |
36 | #include "xfs_ialloc.h" | |
1da177e4 | 37 | #include "xfs_bmap.h" |
1da177e4 LT |
38 | #include "xfs_rtalloc.h" |
39 | #include "xfs_error.h" | |
40 | #include "xfs_itable.h" | |
9909c4aa | 41 | #include "xfs_fsops.h" |
1da177e4 LT |
42 | #include "xfs_attr.h" |
43 | #include "xfs_buf_item.h" | |
44 | #include "xfs_utils.h" | |
739bfb2a | 45 | #include "xfs_vnodeops.h" |
a67d7c5f | 46 | #include "xfs_log_priv.h" |
249a8c11 | 47 | #include "xfs_trans_priv.h" |
48b62a1a | 48 | #include "xfs_filestream.h" |
9f8868ff | 49 | #include "xfs_da_btree.h" |
9f8868ff CH |
50 | #include "xfs_extfree_item.h" |
51 | #include "xfs_mru_cache.h" | |
52 | #include "xfs_inode_item.h" | |
fe4fa4b8 | 53 | #include "xfs_sync.h" |
0b1b213f | 54 | #include "xfs_trace.h" |
1da177e4 LT |
55 | |
56 | #include <linux/namei.h> | |
57 | #include <linux/init.h> | |
5a0e3ad6 | 58 | #include <linux/slab.h> |
1da177e4 | 59 | #include <linux/mount.h> |
0829c360 | 60 | #include <linux/mempool.h> |
1da177e4 | 61 | #include <linux/writeback.h> |
4df08c52 | 62 | #include <linux/kthread.h> |
7dfb7103 | 63 | #include <linux/freezer.h> |
62a877e3 | 64 | #include <linux/parser.h> |
1da177e4 | 65 | |
b87221de | 66 | static const struct super_operations xfs_super_operations; |
7989cb8e | 67 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 68 | mempool_t *xfs_ioend_pool; |
1da177e4 | 69 | |
a67d7c5f DC |
70 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
71 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
72 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
73 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
74 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
75 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
76 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
77 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
78 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
79 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
80 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
81 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
82 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
83 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
84 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
85 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
86 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
87 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
88 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
89 | * unwritten extent conversion */ | |
90 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f DC |
91 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
92 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
93 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
94 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
95 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
96 | * in stat(). */ | |
97 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
98 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
99 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
100 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
101 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
102 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
103 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
104 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
105 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
106 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
107 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
108 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
109 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
110 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
111 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
112 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ |
113 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ | |
114 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ | |
115 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 116 | |
62a877e3 CH |
117 | /* |
118 | * Table driven mount option parser. | |
119 | * | |
120 | * Currently only used for remount, but it will be used for mount | |
121 | * in the future, too. | |
122 | */ | |
123 | enum { | |
124 | Opt_barrier, Opt_nobarrier, Opt_err | |
125 | }; | |
126 | ||
a447c093 | 127 | static const match_table_t tokens = { |
62a877e3 CH |
128 | {Opt_barrier, "barrier"}, |
129 | {Opt_nobarrier, "nobarrier"}, | |
130 | {Opt_err, NULL} | |
131 | }; | |
132 | ||
133 | ||
a67d7c5f DC |
134 | STATIC unsigned long |
135 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
136 | { | |
137 | int last, shift_left_factor = 0; | |
138 | char *value = s; | |
139 | ||
140 | last = strlen(value) - 1; | |
141 | if (value[last] == 'K' || value[last] == 'k') { | |
142 | shift_left_factor = 10; | |
143 | value[last] = '\0'; | |
144 | } | |
145 | if (value[last] == 'M' || value[last] == 'm') { | |
146 | shift_left_factor = 20; | |
147 | value[last] = '\0'; | |
148 | } | |
149 | if (value[last] == 'G' || value[last] == 'g') { | |
150 | shift_left_factor = 30; | |
151 | value[last] = '\0'; | |
152 | } | |
153 | ||
154 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
155 | } | |
156 | ||
9d565ffa CH |
157 | /* |
158 | * This function fills in xfs_mount_t fields based on mount args. | |
159 | * Note: the superblock has _not_ yet been read in. | |
160 | * | |
161 | * Note that this function leaks the various device name allocations on | |
162 | * failure. The caller takes care of them. | |
163 | */ | |
a67d7c5f DC |
164 | STATIC int |
165 | xfs_parseargs( | |
166 | struct xfs_mount *mp, | |
288699fe | 167 | char *options) |
a67d7c5f | 168 | { |
9d565ffa | 169 | struct super_block *sb = mp->m_super; |
a67d7c5f | 170 | char *this_char, *value, *eov; |
9d565ffa CH |
171 | int dsunit = 0; |
172 | int dswidth = 0; | |
173 | int iosize = 0; | |
a5687787 | 174 | __uint8_t iosizelog = 0; |
9d565ffa | 175 | |
4f10700a DC |
176 | /* |
177 | * set up the mount name first so all the errors will refer to the | |
178 | * correct device. | |
179 | */ | |
180 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
181 | if (!mp->m_fsname) | |
182 | return ENOMEM; | |
183 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
184 | ||
9d565ffa CH |
185 | /* |
186 | * Copy binary VFS mount flags we are interested in. | |
187 | */ | |
188 | if (sb->s_flags & MS_RDONLY) | |
189 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
190 | if (sb->s_flags & MS_DIRSYNC) | |
191 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
192 | if (sb->s_flags & MS_SYNCHRONOUS) | |
193 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
194 | ||
195 | /* | |
196 | * Set some default flags that could be cleared by the mount option | |
197 | * parsing. | |
198 | */ | |
199 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
200 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
201 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 202 | |
9d565ffa CH |
203 | /* |
204 | * These can be overridden by the mount option parsing. | |
205 | */ | |
206 | mp->m_logbufs = -1; | |
207 | mp->m_logbsize = -1; | |
a67d7c5f DC |
208 | |
209 | if (!options) | |
210 | goto done; | |
211 | ||
a67d7c5f DC |
212 | while ((this_char = strsep(&options, ",")) != NULL) { |
213 | if (!*this_char) | |
214 | continue; | |
215 | if ((value = strchr(this_char, '=')) != NULL) | |
216 | *value++ = 0; | |
217 | ||
218 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
219 | if (!value || !*value) { | |
4f10700a | 220 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
221 | this_char); |
222 | return EINVAL; | |
223 | } | |
9d565ffa | 224 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
225 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
226 | if (!value || !*value) { | |
4f10700a | 227 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
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) { | |
4f10700a | 234 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
235 | this_char); |
236 | return EINVAL; | |
237 | } | |
9d565ffa CH |
238 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
239 | if (!mp->m_logname) | |
240 | return ENOMEM; | |
a67d7c5f | 241 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 242 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe CH |
243 | this_char); |
244 | return EINVAL; | |
a67d7c5f DC |
245 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
246 | if (!value || !*value) { | |
4f10700a | 247 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
248 | this_char); |
249 | return EINVAL; | |
250 | } | |
9d565ffa CH |
251 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
252 | if (!mp->m_rtname) | |
253 | return ENOMEM; | |
a67d7c5f DC |
254 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
255 | if (!value || !*value) { | |
4f10700a | 256 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
257 | this_char); |
258 | return EINVAL; | |
259 | } | |
260 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 261 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
262 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
263 | if (!value || !*value) { | |
4f10700a | 264 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
265 | this_char); |
266 | return EINVAL; | |
267 | } | |
268 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 269 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
270 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
271 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
272 | mp->m_flags |= XFS_MOUNT_GRPID; | |
273 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
274 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
275 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
276 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 277 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 278 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 279 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 280 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 281 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 282 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 283 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
284 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
285 | if (!value || !*value) { | |
4f10700a | 286 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
287 | this_char); |
288 | return EINVAL; | |
289 | } | |
290 | dsunit = simple_strtoul(value, &eov, 10); | |
291 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
292 | if (!value || !*value) { | |
4f10700a | 293 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
294 | this_char); |
295 | return EINVAL; | |
296 | } | |
297 | dswidth = simple_strtoul(value, &eov, 10); | |
298 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
9d565ffa | 299 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 300 | #if !XFS_BIG_INUMS |
4f10700a | 301 | xfs_warn(mp, "%s option not allowed on this system", |
a67d7c5f DC |
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)) { |
4177af3a CS |
327 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
328 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
329 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
330 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
331 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
332 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
333 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
334 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
335 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
336 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
337 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
338 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
339 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
340 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
341 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
342 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 343 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
344 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
345 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
346 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
347 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
348 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
349 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 350 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
351 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
352 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 | 353 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
354 | xfs_warn(mp, |
355 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 356 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 357 | xfs_warn(mp, |
93b8a585 | 358 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
359 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
360 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
361 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
362 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 363 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
364 | xfs_warn(mp, |
365 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 366 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
367 | xfs_warn(mp, |
368 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 369 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
370 | xfs_warn(mp, |
371 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 372 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
373 | xfs_warn(mp, |
374 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 375 | } else { |
4f10700a | 376 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
a67d7c5f DC |
377 | return EINVAL; |
378 | } | |
379 | } | |
380 | ||
9d565ffa CH |
381 | /* |
382 | * no recovery flag requires a read-only mount | |
383 | */ | |
384 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
385 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 386 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
9d565ffa | 387 | return EINVAL; |
a67d7c5f DC |
388 | } |
389 | ||
9d565ffa | 390 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
391 | xfs_warn(mp, |
392 | "sunit and swidth options incompatible with the noalign option"); | |
a67d7c5f DC |
393 | return EINVAL; |
394 | } | |
395 | ||
7d095257 CH |
396 | #ifndef CONFIG_XFS_QUOTA |
397 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 398 | xfs_warn(mp, "quota support not available in this kernel."); |
7d095257 CH |
399 | return EINVAL; |
400 | } | |
401 | #endif | |
402 | ||
9d565ffa CH |
403 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
404 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
4f10700a | 405 | xfs_warn(mp, "cannot mount with both project and group quota"); |
a67d7c5f DC |
406 | return EINVAL; |
407 | } | |
408 | ||
a67d7c5f | 409 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 410 | xfs_warn(mp, "sunit and swidth must be specified together"); |
a67d7c5f DC |
411 | return EINVAL; |
412 | } | |
413 | ||
414 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
415 | xfs_warn(mp, |
416 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f DC |
417 | dswidth, dsunit); |
418 | return EINVAL; | |
419 | } | |
420 | ||
9d565ffa CH |
421 | done: |
422 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
423 | /* | |
424 | * At this point the superblock has not been read | |
425 | * in, therefore we do not know the block size. | |
426 | * Before the mount call ends we will convert | |
427 | * these to FSBs. | |
428 | */ | |
a67d7c5f | 429 | if (dsunit) { |
9d565ffa CH |
430 | mp->m_dalign = dsunit; |
431 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 432 | } |
9d565ffa CH |
433 | |
434 | if (dswidth) | |
435 | mp->m_swidth = dswidth; | |
436 | } | |
437 | ||
438 | if (mp->m_logbufs != -1 && | |
439 | mp->m_logbufs != 0 && | |
440 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
441 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 442 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa CH |
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))) { | |
4f10700a DC |
451 | xfs_warn(mp, |
452 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa CH |
453 | mp->m_logbsize); |
454 | return XFS_ERROR(EINVAL); | |
455 | } | |
456 | ||
9d565ffa CH |
457 | if (iosizelog) { |
458 | if (iosizelog > XFS_MAX_IO_LOG || | |
459 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 460 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
461 | iosizelog, XFS_MIN_IO_LOG, |
462 | XFS_MAX_IO_LOG); | |
463 | return XFS_ERROR(EINVAL); | |
464 | } | |
465 | ||
466 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
467 | mp->m_readio_log = iosizelog; | |
468 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
469 | } |
470 | ||
a67d7c5f DC |
471 | return 0; |
472 | } | |
473 | ||
474 | struct proc_xfs_info { | |
475 | int flag; | |
476 | char *str; | |
477 | }; | |
478 | ||
479 | STATIC int | |
480 | xfs_showargs( | |
481 | struct xfs_mount *mp, | |
482 | struct seq_file *m) | |
483 | { | |
484 | static struct proc_xfs_info xfs_info_set[] = { | |
485 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 486 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 487 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
488 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
489 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
490 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
491 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
492 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
493 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 494 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 495 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
a67d7c5f DC |
496 | { 0, NULL } |
497 | }; | |
498 | static struct proc_xfs_info xfs_info_unset[] = { | |
499 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
500 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
501 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
502 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
503 | { 0, NULL } | |
504 | }; | |
505 | struct proc_xfs_info *xfs_infop; | |
506 | ||
507 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
508 | if (mp->m_flags & xfs_infop->flag) | |
509 | seq_puts(m, xfs_infop->str); | |
510 | } | |
511 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
512 | if (!(mp->m_flags & xfs_infop->flag)) | |
513 | seq_puts(m, xfs_infop->str); | |
514 | } | |
515 | ||
516 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
517 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
518 | (int)(1 << mp->m_writeio_log) >> 10); | |
519 | ||
520 | if (mp->m_logbufs > 0) | |
521 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
522 | if (mp->m_logbsize > 0) | |
523 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
524 | ||
525 | if (mp->m_logname) | |
526 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
527 | if (mp->m_rtname) | |
528 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
529 | ||
530 | if (mp->m_dalign > 0) | |
531 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
532 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
533 | if (mp->m_swidth > 0) | |
534 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
535 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
536 | ||
537 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
538 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
539 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
540 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
541 | ||
988abe40 AE |
542 | /* Either project or group quotas can be active, not both */ |
543 | ||
544 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
545 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
546 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
547 | else | |
548 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
549 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
550 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
551 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
552 | else | |
553 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
554 | } | |
a67d7c5f DC |
555 | |
556 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
557 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
558 | ||
559 | return 0; | |
560 | } | |
1da177e4 LT |
561 | __uint64_t |
562 | xfs_max_file_offset( | |
563 | unsigned int blockshift) | |
564 | { | |
565 | unsigned int pagefactor = 1; | |
566 | unsigned int bitshift = BITS_PER_LONG - 1; | |
567 | ||
568 | /* Figure out maximum filesize, on Linux this can depend on | |
569 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 570 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
571 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
572 | * So, for page sized blocks (4K on 32 bit platforms), | |
573 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
574 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
575 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
576 | * Note1: get_block_t takes a long (implicit cast from above) | |
577 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
578 | * can optionally convert the [unsigned] long from above into | |
579 | * an [unsigned] long long. | |
580 | */ | |
581 | ||
582 | #if BITS_PER_LONG == 32 | |
90c699a9 | 583 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
584 | ASSERT(sizeof(sector_t) == 8); |
585 | pagefactor = PAGE_CACHE_SIZE; | |
586 | bitshift = BITS_PER_LONG; | |
587 | # else | |
588 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
589 | # endif | |
590 | #endif | |
591 | ||
592 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
593 | } | |
594 | ||
3180e66d | 595 | STATIC int |
1da177e4 LT |
596 | xfs_blkdev_get( |
597 | xfs_mount_t *mp, | |
598 | const char *name, | |
599 | struct block_device **bdevp) | |
600 | { | |
601 | int error = 0; | |
602 | ||
d4d77629 TH |
603 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
604 | mp); | |
1da177e4 LT |
605 | if (IS_ERR(*bdevp)) { |
606 | error = PTR_ERR(*bdevp); | |
4f10700a | 607 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
608 | } |
609 | ||
610 | return -error; | |
611 | } | |
612 | ||
3180e66d | 613 | STATIC void |
1da177e4 LT |
614 | xfs_blkdev_put( |
615 | struct block_device *bdev) | |
616 | { | |
617 | if (bdev) | |
e525fd89 | 618 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
619 | } |
620 | ||
f538d4da CH |
621 | void |
622 | xfs_blkdev_issue_flush( | |
623 | xfs_buftarg_t *buftarg) | |
624 | { | |
dd3932ed | 625 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); |
f538d4da | 626 | } |
1da177e4 | 627 | |
19f354d4 CH |
628 | STATIC void |
629 | xfs_close_devices( | |
630 | struct xfs_mount *mp) | |
631 | { | |
632 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 633 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 634 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 635 | xfs_blkdev_put(logdev); |
19f354d4 CH |
636 | } |
637 | if (mp->m_rtdev_targp) { | |
c032bfcf | 638 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 639 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 640 | xfs_blkdev_put(rtdev); |
19f354d4 | 641 | } |
b7963133 | 642 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
643 | } |
644 | ||
645 | /* | |
646 | * The file system configurations are: | |
647 | * (1) device (partition) with data and internal log | |
648 | * (2) logical volume with data and log subvolumes. | |
649 | * (3) logical volume with data, log, and realtime subvolumes. | |
650 | * | |
651 | * We only have to handle opening the log and realtime volumes here if | |
652 | * they are present. The data subvolume has already been opened by | |
653 | * get_sb_bdev() and is stored in sb->s_bdev. | |
654 | */ | |
655 | STATIC int | |
656 | xfs_open_devices( | |
9d565ffa | 657 | struct xfs_mount *mp) |
19f354d4 CH |
658 | { |
659 | struct block_device *ddev = mp->m_super->s_bdev; | |
660 | struct block_device *logdev = NULL, *rtdev = NULL; | |
661 | int error; | |
662 | ||
663 | /* | |
664 | * Open real time and log devices - order is important. | |
665 | */ | |
9d565ffa CH |
666 | if (mp->m_logname) { |
667 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
668 | if (error) |
669 | goto out; | |
670 | } | |
671 | ||
9d565ffa CH |
672 | if (mp->m_rtname) { |
673 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
674 | if (error) |
675 | goto out_close_logdev; | |
676 | ||
677 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
678 | xfs_warn(mp, |
679 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
19f354d4 CH |
680 | error = EINVAL; |
681 | goto out_close_rtdev; | |
682 | } | |
683 | } | |
684 | ||
685 | /* | |
686 | * Setup xfs_mount buffer target pointers | |
687 | */ | |
688 | error = ENOMEM; | |
ebad861b | 689 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
690 | if (!mp->m_ddev_targp) |
691 | goto out_close_rtdev; | |
692 | ||
693 | if (rtdev) { | |
ebad861b DC |
694 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
695 | mp->m_fsname); | |
19f354d4 CH |
696 | if (!mp->m_rtdev_targp) |
697 | goto out_free_ddev_targ; | |
698 | } | |
699 | ||
700 | if (logdev && logdev != ddev) { | |
ebad861b DC |
701 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
702 | mp->m_fsname); | |
19f354d4 CH |
703 | if (!mp->m_logdev_targp) |
704 | goto out_free_rtdev_targ; | |
705 | } else { | |
706 | mp->m_logdev_targp = mp->m_ddev_targp; | |
707 | } | |
708 | ||
709 | return 0; | |
710 | ||
711 | out_free_rtdev_targ: | |
712 | if (mp->m_rtdev_targp) | |
b7963133 | 713 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 714 | out_free_ddev_targ: |
b7963133 | 715 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
716 | out_close_rtdev: |
717 | if (rtdev) | |
718 | xfs_blkdev_put(rtdev); | |
719 | out_close_logdev: | |
720 | if (logdev && logdev != ddev) | |
721 | xfs_blkdev_put(logdev); | |
722 | out: | |
723 | return error; | |
724 | } | |
725 | ||
e34b562c CH |
726 | /* |
727 | * Setup xfs_mount buffer target pointers based on superblock | |
728 | */ | |
729 | STATIC int | |
730 | xfs_setup_devices( | |
731 | struct xfs_mount *mp) | |
732 | { | |
733 | int error; | |
19f354d4 | 734 | |
e34b562c CH |
735 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
736 | mp->m_sb.sb_sectsize); | |
737 | if (error) | |
738 | return error; | |
739 | ||
740 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
741 | unsigned int log_sector_size = BBSIZE; | |
742 | ||
743 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
744 | log_sector_size = mp->m_sb.sb_logsectsize; | |
745 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
746 | mp->m_sb.sb_blocksize, | |
747 | log_sector_size); | |
748 | if (error) | |
749 | return error; | |
750 | } | |
751 | if (mp->m_rtdev_targp) { | |
752 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
753 | mp->m_sb.sb_blocksize, | |
754 | mp->m_sb.sb_sectsize); | |
755 | if (error) | |
756 | return error; | |
757 | } | |
758 | ||
759 | return 0; | |
760 | } | |
19f354d4 | 761 | |
aa6bf01d CH |
762 | STATIC int |
763 | xfs_init_mount_workqueues( | |
764 | struct xfs_mount *mp) | |
765 | { | |
766 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", | |
767 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
768 | if (!mp->m_data_workqueue) | |
769 | goto out; | |
770 | ||
771 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
772 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
773 | if (!mp->m_unwritten_workqueue) | |
774 | goto out_destroy_data_iodone_queue; | |
775 | ||
776 | return 0; | |
777 | ||
778 | out_destroy_data_iodone_queue: | |
779 | destroy_workqueue(mp->m_data_workqueue); | |
780 | out: | |
781 | return -ENOMEM; | |
782 | } | |
783 | ||
784 | STATIC void | |
785 | xfs_destroy_mount_workqueues( | |
786 | struct xfs_mount *mp) | |
787 | { | |
788 | destroy_workqueue(mp->m_data_workqueue); | |
789 | destroy_workqueue(mp->m_unwritten_workqueue); | |
790 | } | |
791 | ||
bf904248 | 792 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 793 | STATIC struct inode * |
a50cd269 | 794 | xfs_fs_alloc_inode( |
1da177e4 LT |
795 | struct super_block *sb) |
796 | { | |
bf904248 | 797 | BUG(); |
493dca61 | 798 | return NULL; |
1da177e4 LT |
799 | } |
800 | ||
bf904248 | 801 | /* |
99fa8cb3 DC |
802 | * Now that the generic code is guaranteed not to be accessing |
803 | * the linux inode, we can reclaim the inode. | |
bf904248 | 804 | */ |
1da177e4 | 805 | STATIC void |
a50cd269 | 806 | xfs_fs_destroy_inode( |
848ce8f7 | 807 | struct inode *inode) |
1da177e4 | 808 | { |
848ce8f7 CH |
809 | struct xfs_inode *ip = XFS_I(inode); |
810 | ||
cca28fb8 | 811 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
812 | |
813 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
814 | |
815 | /* bad inode, get out here ASAP */ | |
816 | if (is_bad_inode(inode)) | |
817 | goto out_reclaim; | |
818 | ||
848ce8f7 CH |
819 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
820 | ||
821 | /* | |
822 | * We should never get here with one of the reclaim flags already set. | |
823 | */ | |
824 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
825 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
826 | ||
827 | /* | |
57817c68 DC |
828 | * We always use background reclaim here because even if the |
829 | * inode is clean, it still may be under IO and hence we have | |
830 | * to take the flush lock. The background reclaim path handles | |
831 | * this more efficiently than we can here, so simply let background | |
832 | * reclaim tear down all inodes. | |
848ce8f7 | 833 | */ |
848ce8f7 | 834 | out_reclaim: |
57817c68 | 835 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
836 | } |
837 | ||
07c8f675 DC |
838 | /* |
839 | * Slab object creation initialisation for the XFS inode. | |
840 | * This covers only the idempotent fields in the XFS inode; | |
841 | * all other fields need to be initialised on allocation | |
b595076a | 842 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
843 | * fields in the xfs inode that left in the initialise state |
844 | * when freeing the inode. | |
845 | */ | |
bf904248 DC |
846 | STATIC void |
847 | xfs_fs_inode_init_once( | |
07c8f675 DC |
848 | void *inode) |
849 | { | |
850 | struct xfs_inode *ip = inode; | |
851 | ||
852 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
853 | |
854 | /* vfs inode */ | |
855 | inode_init_once(VFS_I(ip)); | |
856 | ||
857 | /* xfs inode */ | |
07c8f675 DC |
858 | atomic_set(&ip->i_pincount, 0); |
859 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
860 | |
861 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
862 | "xfsino", ip->i_ino); | |
07c8f675 DC |
863 | } |
864 | ||
f9581b14 | 865 | /* |
8a9c9980 CH |
866 | * This is called by the VFS when dirtying inode metadata. This can happen |
867 | * for a few reasons, but we only care about timestamp updates, given that | |
868 | * we handled the rest ourselves. In theory no other calls should happen, | |
869 | * but for example generic_write_end() keeps dirtying the inode after | |
870 | * updating i_size. Thus we check that the flags are exactly I_DIRTY_SYNC, | |
871 | * and skip this call otherwise. | |
f9581b14 | 872 | * |
8a9c9980 CH |
873 | * We'll hopefull get a different method just for updating timestamps soon, |
874 | * at which point this hack can go away, and maybe we'll also get real | |
875 | * error handling here. | |
f9581b14 CH |
876 | */ |
877 | STATIC void | |
878 | xfs_fs_dirty_inode( | |
1da177e4 | 879 | struct inode *inode, |
8a9c9980 | 880 | int flags) |
1da177e4 | 881 | { |
2e656092 | 882 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 883 | struct xfs_mount *mp = ip->i_mount; |
8a9c9980 CH |
884 | struct xfs_trans *tp; |
885 | int error; | |
be4f1ac8 | 886 | |
8a9c9980 CH |
887 | if (flags != I_DIRTY_SYNC) |
888 | return; | |
07fec736 | 889 | |
8a9c9980 | 890 | trace_xfs_dirty_inode(ip); |
d4bb6d06 | 891 | |
8a9c9980 CH |
892 | tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); |
893 | error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); | |
894 | if (error) { | |
895 | xfs_trans_cancel(tp, 0); | |
896 | goto trouble; | |
d4bb6d06 | 897 | } |
8a9c9980 | 898 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
e893bffd | 899 | /* |
8a9c9980 | 900 | * Grab all the latest timestamps from the Linux inode. |
e893bffd | 901 | */ |
8a9c9980 CH |
902 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
903 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; | |
904 | ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec; | |
905 | ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec; | |
906 | ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec; | |
907 | ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec; | |
908 | ||
909 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
8f639dde | 910 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); |
8a9c9980 | 911 | error = xfs_trans_commit(tp, 0); |
e893bffd | 912 | if (error) |
8a9c9980 CH |
913 | goto trouble; |
914 | return; | |
915 | ||
916 | trouble: | |
917 | xfs_warn(mp, "failed to update timestamps for inode 0x%llx", ip->i_ino); | |
1da177e4 LT |
918 | } |
919 | ||
920 | STATIC void | |
b57922d9 | 921 | xfs_fs_evict_inode( |
1da177e4 LT |
922 | struct inode *inode) |
923 | { | |
1543d79c | 924 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 925 | |
b57922d9 | 926 | trace_xfs_evict_inode(ip); |
cca28fb8 | 927 | |
b57922d9 AV |
928 | truncate_inode_pages(&inode->i_data, 0); |
929 | end_writeback(inode); | |
99fa8cb3 DC |
930 | XFS_STATS_INC(vn_rele); |
931 | XFS_STATS_INC(vn_remove); | |
932 | XFS_STATS_DEC(vn_active); | |
933 | ||
033da48f CH |
934 | /* |
935 | * The iolock is used by the file system to coordinate reads, | |
936 | * writes, and block truncates. Up to this point the lock | |
937 | * protected concurrent accesses by users of the inode. But | |
938 | * from here forward we're doing some final processing of the | |
939 | * inode because we're done with it, and although we reuse the | |
940 | * iolock for protection it is really a distinct lock class | |
941 | * (in the lockdep sense) from before. To keep lockdep happy | |
942 | * (and basically indicate what we are doing), we explicitly | |
943 | * re-init the iolock here. | |
944 | */ | |
945 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
946 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
dcfcf205 DC |
947 | lockdep_set_class_and_name(&ip->i_iolock.mr_lock, |
948 | &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); | |
033da48f | 949 | |
99fa8cb3 | 950 | xfs_inactive(ip); |
56d433e4 | 951 | } |
1da177e4 | 952 | |
5132ba8f DC |
953 | /* |
954 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
955 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
956 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
957 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
958 | * we drop the final reference on. | |
959 | */ | |
960 | STATIC int | |
961 | xfs_fs_drop_inode( | |
962 | struct inode *inode) | |
963 | { | |
964 | struct xfs_inode *ip = XFS_I(inode); | |
965 | ||
966 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
967 | } | |
968 | ||
a738159d CH |
969 | STATIC void |
970 | xfs_free_fsname( | |
971 | struct xfs_mount *mp) | |
972 | { | |
973 | kfree(mp->m_fsname); | |
974 | kfree(mp->m_rtname); | |
975 | kfree(mp->m_logname); | |
976 | } | |
977 | ||
1da177e4 | 978 | STATIC void |
a50cd269 | 979 | xfs_fs_put_super( |
1da177e4 LT |
980 | struct super_block *sb) |
981 | { | |
745f6919 | 982 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 983 | |
a167b17e | 984 | xfs_syncd_stop(mp); |
075fe102 | 985 | |
e48ad316 CH |
986 | /* |
987 | * Blow away any referenced inode in the filestreams cache. | |
988 | * This can and will cause log traffic as inodes go inactive | |
989 | * here. | |
990 | */ | |
991 | xfs_filestream_unmount(mp); | |
992 | ||
a9add83e | 993 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
e48ad316 | 994 | |
19f354d4 | 995 | xfs_unmountfs(mp); |
6203300e | 996 | xfs_freesb(mp); |
c962fb79 | 997 | xfs_icsb_destroy_counters(mp); |
aa6bf01d | 998 | xfs_destroy_mount_workqueues(mp); |
19f354d4 | 999 | xfs_close_devices(mp); |
a738159d | 1000 | xfs_free_fsname(mp); |
c962fb79 | 1001 | kfree(mp); |
1da177e4 LT |
1002 | } |
1003 | ||
1da177e4 | 1004 | STATIC int |
69961a26 | 1005 | xfs_fs_sync_fs( |
1da177e4 LT |
1006 | struct super_block *sb, |
1007 | int wait) | |
1008 | { | |
745f6919 | 1009 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1010 | int error; |
1da177e4 | 1011 | |
e893bffd | 1012 | /* |
34625c66 | 1013 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1014 | */ |
34625c66 | 1015 | if (!wait) |
69961a26 | 1016 | return 0; |
69961a26 CH |
1017 | |
1018 | error = xfs_quiesce_data(mp); | |
1019 | if (error) | |
1020 | return -error; | |
1da177e4 | 1021 | |
69961a26 | 1022 | if (laptop_mode) { |
1da177e4 LT |
1023 | /* |
1024 | * The disk must be active because we're syncing. | |
1025 | * We schedule xfssyncd now (now that the disk is | |
1026 | * active) instead of later (when it might not be). | |
1027 | */ | |
c6d09b66 | 1028 | flush_delayed_work_sync(&mp->m_sync_work); |
1da177e4 LT |
1029 | } |
1030 | ||
69961a26 | 1031 | return 0; |
1da177e4 LT |
1032 | } |
1033 | ||
1034 | STATIC int | |
a50cd269 | 1035 | xfs_fs_statfs( |
726c3342 | 1036 | struct dentry *dentry, |
1da177e4 LT |
1037 | struct kstatfs *statp) |
1038 | { | |
4ca488eb CH |
1039 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1040 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1041 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1042 | __uint64_t fakeinos, id; |
1043 | xfs_extlen_t lsize; | |
2fe33661 | 1044 | __int64_t ffree; |
4ca488eb CH |
1045 | |
1046 | statp->f_type = XFS_SB_MAGIC; | |
1047 | statp->f_namelen = MAXNAMELEN - 1; | |
1048 | ||
1049 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1050 | statp->f_fsid.val[0] = (u32)id; | |
1051 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1052 | ||
d4d90b57 | 1053 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1054 | |
1055 | spin_lock(&mp->m_sb_lock); | |
1056 | statp->f_bsize = sbp->sb_blocksize; | |
1057 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1058 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1059 | statp->f_bfree = statp->f_bavail = | |
1060 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1061 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1062 | statp->f_files = |
1063 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1064 | if (mp->m_maxicount) | |
a19d9f88 CH |
1065 | statp->f_files = min_t(typeof(statp->f_files), |
1066 | statp->f_files, | |
1067 | mp->m_maxicount); | |
2fe33661 SB |
1068 | |
1069 | /* make sure statp->f_ffree does not underflow */ | |
1070 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1071 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1072 | ||
4ca488eb CH |
1073 | spin_unlock(&mp->m_sb_lock); |
1074 | ||
7d095257 CH |
1075 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1076 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1077 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1078 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1079 | return 0; |
1da177e4 LT |
1080 | } |
1081 | ||
d5db0f97 ES |
1082 | STATIC void |
1083 | xfs_save_resvblks(struct xfs_mount *mp) | |
1084 | { | |
1085 | __uint64_t resblks = 0; | |
1086 | ||
1087 | mp->m_resblks_save = mp->m_resblks; | |
1088 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1089 | } | |
1090 | ||
1091 | STATIC void | |
1092 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1093 | { | |
1094 | __uint64_t resblks; | |
1095 | ||
1096 | if (mp->m_resblks_save) { | |
1097 | resblks = mp->m_resblks_save; | |
1098 | mp->m_resblks_save = 0; | |
1099 | } else | |
1100 | resblks = xfs_default_resblks(mp); | |
1101 | ||
1102 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1103 | } | |
1104 | ||
1da177e4 | 1105 | STATIC int |
a50cd269 | 1106 | xfs_fs_remount( |
1da177e4 LT |
1107 | struct super_block *sb, |
1108 | int *flags, | |
1109 | char *options) | |
1110 | { | |
745f6919 | 1111 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1112 | substring_t args[MAX_OPT_ARGS]; |
1113 | char *p; | |
7884bc86 | 1114 | int error; |
1da177e4 | 1115 | |
62a877e3 CH |
1116 | while ((p = strsep(&options, ",")) != NULL) { |
1117 | int token; | |
bdd907ba | 1118 | |
62a877e3 CH |
1119 | if (!*p) |
1120 | continue; | |
48b62a1a | 1121 | |
62a877e3 CH |
1122 | token = match_token(p, tokens, args); |
1123 | switch (token) { | |
1124 | case Opt_barrier: | |
48b62a1a | 1125 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1126 | break; |
1127 | case Opt_nobarrier: | |
48b62a1a | 1128 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1129 | break; |
1130 | default: | |
6efdf281 CH |
1131 | /* |
1132 | * Logically we would return an error here to prevent | |
1133 | * users from believing they might have changed | |
1134 | * mount options using remount which can't be changed. | |
1135 | * | |
1136 | * But unfortunately mount(8) adds all options from | |
1137 | * mtab and fstab to the mount arguments in some cases | |
1138 | * so we can't blindly reject options, but have to | |
1139 | * check for each specified option if it actually | |
1140 | * differs from the currently set option and only | |
1141 | * reject it if that's the case. | |
1142 | * | |
1143 | * Until that is implemented we return success for | |
1144 | * every remount request, and silently ignore all | |
1145 | * options that we can't actually change. | |
1146 | */ | |
1147 | #if 0 | |
4f10700a DC |
1148 | xfs_info(mp, |
1149 | "mount option \"%s\" not supported for remount\n", p); | |
62a877e3 | 1150 | return -EINVAL; |
6efdf281 | 1151 | #else |
6c5e51da | 1152 | break; |
6efdf281 | 1153 | #endif |
48b62a1a | 1154 | } |
62a877e3 CH |
1155 | } |
1156 | ||
7884bc86 | 1157 | /* ro -> rw */ |
62a877e3 CH |
1158 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1159 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1160 | |
1161 | /* | |
1162 | * If this is the first remount to writeable state we | |
1163 | * might have some superblock changes to update. | |
1164 | */ | |
1165 | if (mp->m_update_flags) { | |
1166 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1167 | if (error) { | |
4f10700a | 1168 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1169 | return error; |
1170 | } | |
1171 | mp->m_update_flags = 0; | |
1172 | } | |
cbe132a8 DC |
1173 | |
1174 | /* | |
1175 | * Fill out the reserve pool if it is empty. Use the stashed | |
1176 | * value if it is non-zero, otherwise go with the default. | |
1177 | */ | |
d5db0f97 | 1178 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1179 | } |
1180 | ||
1181 | /* rw -> ro */ | |
1182 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1183 | /* |
1184 | * After we have synced the data but before we sync the | |
1185 | * metadata, we need to free up the reserve block pool so that | |
1186 | * the used block count in the superblock on disk is correct at | |
1187 | * the end of the remount. Stash the current reserve pool size | |
1188 | * so that if we get remounted rw, we can return it to the same | |
1189 | * size. | |
1190 | */ | |
cbe132a8 | 1191 | |
e9f1c6ee | 1192 | xfs_quiesce_data(mp); |
d5db0f97 | 1193 | xfs_save_resvblks(mp); |
76bf105c | 1194 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1195 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1196 | } | |
1197 | ||
62a877e3 | 1198 | return 0; |
1da177e4 LT |
1199 | } |
1200 | ||
9909c4aa CH |
1201 | /* |
1202 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1203 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1204 | * record to dirty the log in case of a crash while frozen. |
1205 | */ | |
c4be0c1d TS |
1206 | STATIC int |
1207 | xfs_fs_freeze( | |
1da177e4 LT |
1208 | struct super_block *sb) |
1209 | { | |
9909c4aa CH |
1210 | struct xfs_mount *mp = XFS_M(sb); |
1211 | ||
d5db0f97 | 1212 | xfs_save_resvblks(mp); |
76bf105c | 1213 | xfs_quiesce_attr(mp); |
c58efdb4 | 1214 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1215 | } |
1216 | ||
d5db0f97 ES |
1217 | STATIC int |
1218 | xfs_fs_unfreeze( | |
1219 | struct super_block *sb) | |
1220 | { | |
1221 | struct xfs_mount *mp = XFS_M(sb); | |
1222 | ||
1223 | xfs_restore_resvblks(mp); | |
1224 | return 0; | |
1225 | } | |
1226 | ||
1da177e4 | 1227 | STATIC int |
a50cd269 | 1228 | xfs_fs_show_options( |
1da177e4 | 1229 | struct seq_file *m, |
34c80b1d | 1230 | struct dentry *root) |
1da177e4 | 1231 | { |
34c80b1d | 1232 | return -xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1233 | } |
1234 | ||
f8f15e42 CH |
1235 | /* |
1236 | * This function fills in xfs_mount_t fields based on mount args. | |
1237 | * Note: the superblock _has_ now been read in. | |
1238 | */ | |
1239 | STATIC int | |
1240 | xfs_finish_flags( | |
f8f15e42 CH |
1241 | struct xfs_mount *mp) |
1242 | { | |
1243 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1244 | ||
025dfdaf | 1245 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1246 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1247 | if (mp->m_logbsize <= 0 && |
1248 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1249 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1250 | } else if (mp->m_logbsize > 0 && |
1251 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1252 | xfs_warn(mp, |
1253 | "logbuf size must be greater than or equal to log stripe size"); | |
f8f15e42 CH |
1254 | return XFS_ERROR(EINVAL); |
1255 | } | |
1256 | } else { | |
1257 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1258 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1259 | xfs_warn(mp, |
1260 | "logbuf size for version 1 logs must be 16K or 32K"); | |
f8f15e42 CH |
1261 | return XFS_ERROR(EINVAL); |
1262 | } | |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1267 | * told by noattr2 to turn it off | |
1268 | */ | |
1269 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1270 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1271 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1272 | ||
1273 | /* | |
1274 | * prohibit r/w mounts of read-only filesystems | |
1275 | */ | |
1276 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1277 | xfs_warn(mp, |
1278 | "cannot mount a read-only filesystem as read-write"); | |
f8f15e42 CH |
1279 | return XFS_ERROR(EROFS); |
1280 | } | |
1281 | ||
f8f15e42 CH |
1282 | return 0; |
1283 | } | |
1284 | ||
1da177e4 | 1285 | STATIC int |
a50cd269 | 1286 | xfs_fs_fill_super( |
1da177e4 LT |
1287 | struct super_block *sb, |
1288 | void *data, | |
1289 | int silent) | |
1290 | { | |
f3dcc13f | 1291 | struct inode *root; |
745f6919 | 1292 | struct xfs_mount *mp = NULL; |
c962fb79 | 1293 | int flags = 0, error = ENOMEM; |
bdd907ba | 1294 | |
c962fb79 CH |
1295 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1296 | if (!mp) | |
9d565ffa | 1297 | goto out; |
1da177e4 | 1298 | |
c962fb79 | 1299 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1300 | mutex_init(&mp->m_growlock); |
1301 | atomic_set(&mp->m_active_trans, 0); | |
74394496 | 1302 | |
b267ce99 CH |
1303 | mp->m_super = sb; |
1304 | sb->s_fs_info = mp; | |
1da177e4 | 1305 | |
288699fe | 1306 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1307 | if (error) |
9d565ffa | 1308 | goto out_free_fsname; |
1da177e4 LT |
1309 | |
1310 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1311 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1312 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1313 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1314 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1315 | #endif |
a50cd269 | 1316 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1317 | |
9d565ffa | 1318 | if (silent) |
f8f15e42 CH |
1319 | flags |= XFS_MFSI_QUIET; |
1320 | ||
9d565ffa | 1321 | error = xfs_open_devices(mp); |
19f354d4 | 1322 | if (error) |
288699fe | 1323 | goto out_free_fsname; |
f8f15e42 | 1324 | |
aa6bf01d | 1325 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1326 | if (error) |
1327 | goto out_close_devices; | |
c962fb79 | 1328 | |
aa6bf01d CH |
1329 | error = xfs_icsb_init_counters(mp); |
1330 | if (error) | |
1331 | goto out_destroy_workqueues; | |
1332 | ||
f8f15e42 CH |
1333 | error = xfs_readsb(mp, flags); |
1334 | if (error) | |
9d565ffa CH |
1335 | goto out_destroy_counters; |
1336 | ||
1337 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1338 | if (error) |
effa2eda | 1339 | goto out_free_sb; |
f8f15e42 | 1340 | |
e34b562c | 1341 | error = xfs_setup_devices(mp); |
19f354d4 | 1342 | if (error) |
effa2eda | 1343 | goto out_free_sb; |
f8f15e42 | 1344 | |
f8f15e42 CH |
1345 | error = xfs_filestream_mount(mp); |
1346 | if (error) | |
effa2eda | 1347 | goto out_free_sb; |
f8f15e42 | 1348 | |
704b2907 DC |
1349 | /* |
1350 | * we must configure the block size in the superblock before we run the | |
1351 | * full mount process as the mount process can lookup and cache inodes. | |
1352 | * For the same reason we must also initialise the syncd and register | |
1353 | * the inode cache shrinker so that inodes can be reclaimed during | |
1354 | * operations like a quotacheck that iterate all inodes in the | |
1355 | * filesystem. | |
1356 | */ | |
4ca488eb CH |
1357 | sb->s_magic = XFS_SB_MAGIC; |
1358 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1359 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1360 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1361 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1362 | sb->s_time_gran = 1; |
1363 | set_posix_acl_flag(sb); | |
1364 | ||
704b2907 DC |
1365 | error = xfs_mountfs(mp); |
1366 | if (error) | |
2bcf6e97 CH |
1367 | goto out_filestream_unmount; |
1368 | ||
1369 | error = xfs_syncd_init(mp); | |
1370 | if (error) | |
1371 | goto out_unmount; | |
704b2907 | 1372 | |
01651646 | 1373 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1374 | if (!root) { |
cbc89dcf | 1375 | error = ENOENT; |
2bcf6e97 | 1376 | goto out_syncd_stop; |
cbc89dcf | 1377 | } |
f3dcc13f CH |
1378 | if (is_bad_inode(root)) { |
1379 | error = EINVAL; | |
2bcf6e97 | 1380 | goto out_syncd_stop; |
1da177e4 | 1381 | } |
48fde701 | 1382 | sb->s_root = d_make_root(root); |
f3dcc13f CH |
1383 | if (!sb->s_root) { |
1384 | error = ENOMEM; | |
48fde701 | 1385 | goto out_syncd_stop; |
1da177e4 | 1386 | } |
74394496 | 1387 | |
1da177e4 LT |
1388 | return 0; |
1389 | ||
120226c1 CH |
1390 | out_filestream_unmount: |
1391 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1392 | out_free_sb: |
1393 | xfs_freesb(mp); | |
9d565ffa | 1394 | out_destroy_counters: |
c962fb79 | 1395 | xfs_icsb_destroy_counters(mp); |
aa6bf01d CH |
1396 | out_destroy_workqueues: |
1397 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1398 | out_close_devices: |
19f354d4 | 1399 | xfs_close_devices(mp); |
9d565ffa CH |
1400 | out_free_fsname: |
1401 | xfs_free_fsname(mp); | |
c962fb79 | 1402 | kfree(mp); |
9d565ffa | 1403 | out: |
c962fb79 | 1404 | return -error; |
f8f15e42 | 1405 | |
2bcf6e97 | 1406 | out_syncd_stop: |
704b2907 | 1407 | xfs_syncd_stop(mp); |
2bcf6e97 | 1408 | out_unmount: |
e48ad316 CH |
1409 | /* |
1410 | * Blow away any referenced inode in the filestreams cache. | |
1411 | * This can and will cause log traffic as inodes go inactive | |
1412 | * here. | |
1413 | */ | |
1414 | xfs_filestream_unmount(mp); | |
1415 | ||
a9add83e | 1416 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
e48ad316 | 1417 | |
19f354d4 | 1418 | xfs_unmountfs(mp); |
6203300e | 1419 | goto out_free_sb; |
1da177e4 LT |
1420 | } |
1421 | ||
152a0836 AV |
1422 | STATIC struct dentry * |
1423 | xfs_fs_mount( | |
1da177e4 LT |
1424 | struct file_system_type *fs_type, |
1425 | int flags, | |
1426 | const char *dev_name, | |
152a0836 | 1427 | void *data) |
1da177e4 | 1428 | { |
152a0836 | 1429 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1430 | } |
1431 | ||
8daaa831 DC |
1432 | static int |
1433 | xfs_fs_nr_cached_objects( | |
1434 | struct super_block *sb) | |
1435 | { | |
1436 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1437 | } | |
1438 | ||
1439 | static void | |
1440 | xfs_fs_free_cached_objects( | |
1441 | struct super_block *sb, | |
1442 | int nr_to_scan) | |
1443 | { | |
1444 | xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); | |
1445 | } | |
1446 | ||
b87221de | 1447 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1448 | .alloc_inode = xfs_fs_alloc_inode, |
1449 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1450 | .dirty_inode = xfs_fs_dirty_inode, |
b57922d9 | 1451 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1452 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1453 | .put_super = xfs_fs_put_super, |
69961a26 | 1454 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1455 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1456 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1457 | .statfs = xfs_fs_statfs, |
1458 | .remount_fs = xfs_fs_remount, | |
1459 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1460 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1461 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1462 | }; |
1463 | ||
5085b607 | 1464 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1465 | .owner = THIS_MODULE, |
1466 | .name = "xfs", | |
152a0836 | 1467 | .mount = xfs_fs_mount, |
1da177e4 LT |
1468 | .kill_sb = kill_block_super, |
1469 | .fs_flags = FS_REQUIRES_DEV, | |
1470 | }; | |
1471 | ||
9f8868ff CH |
1472 | STATIC int __init |
1473 | xfs_init_zones(void) | |
1474 | { | |
9f8868ff CH |
1475 | |
1476 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1477 | if (!xfs_ioend_zone) | |
bf904248 | 1478 | goto out; |
9f8868ff CH |
1479 | |
1480 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1481 | xfs_ioend_zone); | |
1482 | if (!xfs_ioend_pool) | |
1483 | goto out_destroy_ioend_zone; | |
1484 | ||
1485 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1486 | "xfs_log_ticket"); | |
1487 | if (!xfs_log_ticket_zone) | |
1488 | goto out_destroy_ioend_pool; | |
1489 | ||
1490 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1491 | "xfs_bmap_free_item"); | |
1492 | if (!xfs_bmap_free_item_zone) | |
1493 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1494 | |
9f8868ff CH |
1495 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1496 | "xfs_btree_cur"); | |
1497 | if (!xfs_btree_cur_zone) | |
1498 | goto out_destroy_bmap_free_item_zone; | |
1499 | ||
1500 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1501 | "xfs_da_state"); | |
1502 | if (!xfs_da_state_zone) | |
1503 | goto out_destroy_btree_cur_zone; | |
1504 | ||
1505 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1506 | if (!xfs_dabuf_zone) | |
1507 | goto out_destroy_da_state_zone; | |
1508 | ||
1509 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1510 | if (!xfs_ifork_zone) | |
1511 | goto out_destroy_dabuf_zone; | |
1512 | ||
1513 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1514 | if (!xfs_trans_zone) | |
1515 | goto out_destroy_ifork_zone; | |
1516 | ||
e98c414f CH |
1517 | xfs_log_item_desc_zone = |
1518 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1519 | "xfs_log_item_desc"); | |
1520 | if (!xfs_log_item_desc_zone) | |
1521 | goto out_destroy_trans_zone; | |
1522 | ||
9f8868ff CH |
1523 | /* |
1524 | * The size of the zone allocated buf log item is the maximum | |
1525 | * size possible under XFS. This wastes a little bit of memory, | |
1526 | * but it is much faster. | |
1527 | */ | |
1528 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
c1155410 | 1529 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
9f8868ff CH |
1530 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
1531 | if (!xfs_buf_item_zone) | |
e98c414f | 1532 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1533 | |
1534 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1535 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1536 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1537 | if (!xfs_efd_zone) | |
1538 | goto out_destroy_buf_item_zone; | |
1539 | ||
1540 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1541 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1542 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1543 | if (!xfs_efi_zone) | |
1544 | goto out_destroy_efd_zone; | |
1545 | ||
1546 | xfs_inode_zone = | |
1547 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1548 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1549 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1550 | if (!xfs_inode_zone) |
1551 | goto out_destroy_efi_zone; | |
1552 | ||
1553 | xfs_ili_zone = | |
1554 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1555 | KM_ZONE_SPREAD, NULL); | |
1556 | if (!xfs_ili_zone) | |
1557 | goto out_destroy_inode_zone; | |
1558 | ||
9f8868ff CH |
1559 | return 0; |
1560 | ||
9f8868ff CH |
1561 | out_destroy_inode_zone: |
1562 | kmem_zone_destroy(xfs_inode_zone); | |
1563 | out_destroy_efi_zone: | |
1564 | kmem_zone_destroy(xfs_efi_zone); | |
1565 | out_destroy_efd_zone: | |
1566 | kmem_zone_destroy(xfs_efd_zone); | |
1567 | out_destroy_buf_item_zone: | |
1568 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1569 | out_destroy_log_item_desc_zone: |
1570 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1571 | out_destroy_trans_zone: |
1572 | kmem_zone_destroy(xfs_trans_zone); | |
1573 | out_destroy_ifork_zone: | |
1574 | kmem_zone_destroy(xfs_ifork_zone); | |
1575 | out_destroy_dabuf_zone: | |
1576 | kmem_zone_destroy(xfs_dabuf_zone); | |
1577 | out_destroy_da_state_zone: | |
1578 | kmem_zone_destroy(xfs_da_state_zone); | |
1579 | out_destroy_btree_cur_zone: | |
1580 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1581 | out_destroy_bmap_free_item_zone: | |
1582 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1583 | out_destroy_log_ticket_zone: | |
1584 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1585 | out_destroy_ioend_pool: | |
1586 | mempool_destroy(xfs_ioend_pool); | |
1587 | out_destroy_ioend_zone: | |
1588 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1589 | out: |
1590 | return -ENOMEM; | |
1591 | } | |
1592 | ||
1593 | STATIC void | |
1594 | xfs_destroy_zones(void) | |
1595 | { | |
9f8868ff CH |
1596 | kmem_zone_destroy(xfs_ili_zone); |
1597 | kmem_zone_destroy(xfs_inode_zone); | |
1598 | kmem_zone_destroy(xfs_efi_zone); | |
1599 | kmem_zone_destroy(xfs_efd_zone); | |
1600 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1601 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1602 | kmem_zone_destroy(xfs_trans_zone); |
1603 | kmem_zone_destroy(xfs_ifork_zone); | |
1604 | kmem_zone_destroy(xfs_dabuf_zone); | |
1605 | kmem_zone_destroy(xfs_da_state_zone); | |
1606 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1607 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1608 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1609 | mempool_destroy(xfs_ioend_pool); | |
1610 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1611 | |
1612 | } | |
1da177e4 | 1613 | |
0bf6a5bd DC |
1614 | STATIC int __init |
1615 | xfs_init_workqueues(void) | |
1616 | { | |
1617 | /* | |
40d344ec CH |
1618 | * We never want to the same work item to run twice, reclaiming inodes |
1619 | * or idling the log is not going to get any faster by multiple CPUs | |
1620 | * competing for ressources. Use the default large max_active value | |
1621 | * so that even lots of filesystems can perform these task in parallel. | |
0bf6a5bd | 1622 | */ |
40d344ec | 1623 | xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_NON_REENTRANT, 0); |
0bf6a5bd | 1624 | if (!xfs_syncd_wq) |
0030807c | 1625 | return -ENOMEM; |
c999a223 DC |
1626 | |
1627 | /* | |
1628 | * The allocation workqueue can be used in memory reclaim situations | |
1629 | * (writepage path), and parallelism is only limited by the number of | |
1630 | * AGs in all the filesystems mounted. Hence use the default large | |
1631 | * max_active value for this workqueue. | |
1632 | */ | |
1633 | xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0); | |
1634 | if (!xfs_alloc_wq) | |
1635 | goto out_destroy_syncd; | |
1636 | ||
0bf6a5bd | 1637 | return 0; |
c999a223 DC |
1638 | |
1639 | out_destroy_syncd: | |
1640 | destroy_workqueue(xfs_syncd_wq); | |
1641 | return -ENOMEM; | |
0bf6a5bd DC |
1642 | } |
1643 | ||
39411f81 | 1644 | STATIC void |
0bf6a5bd DC |
1645 | xfs_destroy_workqueues(void) |
1646 | { | |
c999a223 | 1647 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1648 | destroy_workqueue(xfs_syncd_wq); |
1649 | } | |
1650 | ||
1da177e4 | 1651 | STATIC int __init |
9f8868ff | 1652 | init_xfs_fs(void) |
1da177e4 LT |
1653 | { |
1654 | int error; | |
1da177e4 | 1655 | |
65795910 CH |
1656 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1657 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1658 | |
9f8868ff | 1659 | xfs_dir_startup(); |
1da177e4 | 1660 | |
8758280f | 1661 | error = xfs_init_zones(); |
9f8868ff CH |
1662 | if (error) |
1663 | goto out; | |
1664 | ||
0bf6a5bd | 1665 | error = xfs_init_workqueues(); |
9f8868ff | 1666 | if (error) |
0b1b213f | 1667 | goto out_destroy_zones; |
9f8868ff | 1668 | |
0bf6a5bd DC |
1669 | error = xfs_mru_cache_init(); |
1670 | if (error) | |
1671 | goto out_destroy_wq; | |
1672 | ||
9f8868ff CH |
1673 | error = xfs_filestream_init(); |
1674 | if (error) | |
1675 | goto out_mru_cache_uninit; | |
1da177e4 | 1676 | |
ce8e922c | 1677 | error = xfs_buf_init(); |
9f8868ff CH |
1678 | if (error) |
1679 | goto out_filestream_uninit; | |
1680 | ||
1681 | error = xfs_init_procfs(); | |
1682 | if (error) | |
1683 | goto out_buf_terminate; | |
1684 | ||
1685 | error = xfs_sysctl_register(); | |
1686 | if (error) | |
1687 | goto out_cleanup_procfs; | |
1da177e4 | 1688 | |
a05931ce CH |
1689 | error = xfs_qm_init(); |
1690 | if (error) | |
1691 | goto out_sysctl_unregister; | |
1da177e4 LT |
1692 | |
1693 | error = register_filesystem(&xfs_fs_type); | |
1694 | if (error) | |
a05931ce | 1695 | goto out_qm_exit; |
1da177e4 LT |
1696 | return 0; |
1697 | ||
a05931ce CH |
1698 | out_qm_exit: |
1699 | xfs_qm_exit(); | |
9f8868ff CH |
1700 | out_sysctl_unregister: |
1701 | xfs_sysctl_unregister(); | |
1702 | out_cleanup_procfs: | |
1703 | xfs_cleanup_procfs(); | |
1704 | out_buf_terminate: | |
ce8e922c | 1705 | xfs_buf_terminate(); |
9f8868ff CH |
1706 | out_filestream_uninit: |
1707 | xfs_filestream_uninit(); | |
1708 | out_mru_cache_uninit: | |
1709 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1710 | out_destroy_wq: |
1711 | xfs_destroy_workqueues(); | |
9f8868ff | 1712 | out_destroy_zones: |
8758280f | 1713 | xfs_destroy_zones(); |
9f8868ff | 1714 | out: |
1da177e4 LT |
1715 | return error; |
1716 | } | |
1717 | ||
1718 | STATIC void __exit | |
9f8868ff | 1719 | exit_xfs_fs(void) |
1da177e4 | 1720 | { |
a05931ce | 1721 | xfs_qm_exit(); |
1da177e4 | 1722 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1723 | xfs_sysctl_unregister(); |
1724 | xfs_cleanup_procfs(); | |
ce8e922c | 1725 | xfs_buf_terminate(); |
9f8868ff CH |
1726 | xfs_filestream_uninit(); |
1727 | xfs_mru_cache_uninit(); | |
0bf6a5bd | 1728 | xfs_destroy_workqueues(); |
8758280f | 1729 | xfs_destroy_zones(); |
1da177e4 LT |
1730 | } |
1731 | ||
1732 | module_init(init_xfs_fs); | |
1733 | module_exit(exit_xfs_fs); | |
1734 | ||
1735 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1736 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1737 | MODULE_LICENSE("GPL"); |