Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
0b1b213f | 18 | |
1da177e4 | 19 | #include "xfs.h" |
a844f451 | 20 | #include "xfs_bit.h" |
1da177e4 | 21 | #include "xfs_log.h" |
a844f451 | 22 | #include "xfs_inum.h" |
1da177e4 LT |
23 | #include "xfs_trans.h" |
24 | #include "xfs_sb.h" | |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 LT |
26 | #include "xfs_dir2.h" |
27 | #include "xfs_alloc.h" | |
1da177e4 LT |
28 | #include "xfs_quota.h" |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
33 | #include "xfs_dinode.h" |
34 | #include "xfs_inode.h" | |
a844f451 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)) { |
9d565ffa CH |
327 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
328 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | | |
469fc23d | 329 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
9d565ffa | 330 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
a67d7c5f DC |
331 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
332 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
333 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
334 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
335 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
336 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
337 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
338 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
339 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
340 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
341 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
342 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
343 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 344 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
345 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
346 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
347 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
348 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
349 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
350 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 351 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
352 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
353 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 | 354 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
355 | xfs_warn(mp, |
356 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 357 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 358 | xfs_warn(mp, |
93b8a585 | 359 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
360 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
361 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
362 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
363 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 364 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
365 | xfs_warn(mp, |
366 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 367 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
368 | xfs_warn(mp, |
369 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 370 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
371 | xfs_warn(mp, |
372 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 373 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
374 | xfs_warn(mp, |
375 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 376 | } else { |
4f10700a | 377 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
a67d7c5f DC |
378 | return EINVAL; |
379 | } | |
380 | } | |
381 | ||
9d565ffa CH |
382 | /* |
383 | * no recovery flag requires a read-only mount | |
384 | */ | |
385 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
386 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 387 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
9d565ffa | 388 | return EINVAL; |
a67d7c5f DC |
389 | } |
390 | ||
9d565ffa | 391 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
392 | xfs_warn(mp, |
393 | "sunit and swidth options incompatible with the noalign option"); | |
a67d7c5f DC |
394 | return EINVAL; |
395 | } | |
396 | ||
7d095257 CH |
397 | #ifndef CONFIG_XFS_QUOTA |
398 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 399 | xfs_warn(mp, "quota support not available in this kernel."); |
7d095257 CH |
400 | return EINVAL; |
401 | } | |
402 | #endif | |
403 | ||
9d565ffa CH |
404 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
405 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
4f10700a | 406 | xfs_warn(mp, "cannot mount with both project and group quota"); |
a67d7c5f DC |
407 | return EINVAL; |
408 | } | |
409 | ||
a67d7c5f | 410 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 411 | xfs_warn(mp, "sunit and swidth must be specified together"); |
a67d7c5f DC |
412 | return EINVAL; |
413 | } | |
414 | ||
415 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
416 | xfs_warn(mp, |
417 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f DC |
418 | dswidth, dsunit); |
419 | return EINVAL; | |
420 | } | |
421 | ||
9d565ffa CH |
422 | done: |
423 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
424 | /* | |
425 | * At this point the superblock has not been read | |
426 | * in, therefore we do not know the block size. | |
427 | * Before the mount call ends we will convert | |
428 | * these to FSBs. | |
429 | */ | |
a67d7c5f | 430 | if (dsunit) { |
9d565ffa CH |
431 | mp->m_dalign = dsunit; |
432 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 433 | } |
9d565ffa CH |
434 | |
435 | if (dswidth) | |
436 | mp->m_swidth = dswidth; | |
437 | } | |
438 | ||
439 | if (mp->m_logbufs != -1 && | |
440 | mp->m_logbufs != 0 && | |
441 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
442 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 443 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa CH |
444 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
445 | return XFS_ERROR(EINVAL); | |
446 | } | |
447 | if (mp->m_logbsize != -1 && | |
448 | mp->m_logbsize != 0 && | |
449 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
450 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
451 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
452 | xfs_warn(mp, |
453 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa CH |
454 | mp->m_logbsize); |
455 | return XFS_ERROR(EINVAL); | |
456 | } | |
457 | ||
9d565ffa CH |
458 | if (iosizelog) { |
459 | if (iosizelog > XFS_MAX_IO_LOG || | |
460 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 461 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
462 | iosizelog, XFS_MIN_IO_LOG, |
463 | XFS_MAX_IO_LOG); | |
464 | return XFS_ERROR(EINVAL); | |
465 | } | |
466 | ||
467 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
468 | mp->m_readio_log = iosizelog; | |
469 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
470 | } |
471 | ||
a67d7c5f DC |
472 | return 0; |
473 | } | |
474 | ||
475 | struct proc_xfs_info { | |
476 | int flag; | |
477 | char *str; | |
478 | }; | |
479 | ||
480 | STATIC int | |
481 | xfs_showargs( | |
482 | struct xfs_mount *mp, | |
483 | struct seq_file *m) | |
484 | { | |
485 | static struct proc_xfs_info xfs_info_set[] = { | |
486 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 487 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 488 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
489 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
490 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
491 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
492 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
493 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
494 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 495 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 496 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
a67d7c5f DC |
497 | { 0, NULL } |
498 | }; | |
499 | static struct proc_xfs_info xfs_info_unset[] = { | |
500 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
501 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
502 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
503 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
504 | { 0, NULL } | |
505 | }; | |
506 | struct proc_xfs_info *xfs_infop; | |
507 | ||
508 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
509 | if (mp->m_flags & xfs_infop->flag) | |
510 | seq_puts(m, xfs_infop->str); | |
511 | } | |
512 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
513 | if (!(mp->m_flags & xfs_infop->flag)) | |
514 | seq_puts(m, xfs_infop->str); | |
515 | } | |
516 | ||
517 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
518 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
519 | (int)(1 << mp->m_writeio_log) >> 10); | |
520 | ||
521 | if (mp->m_logbufs > 0) | |
522 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
523 | if (mp->m_logbsize > 0) | |
524 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
525 | ||
526 | if (mp->m_logname) | |
527 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
528 | if (mp->m_rtname) | |
529 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
530 | ||
531 | if (mp->m_dalign > 0) | |
532 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
533 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
534 | if (mp->m_swidth > 0) | |
535 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
536 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
537 | ||
538 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
539 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
540 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
541 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
542 | ||
988abe40 AE |
543 | /* Either project or group quotas can be active, not both */ |
544 | ||
545 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
546 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
547 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
548 | else | |
549 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
550 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
551 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
552 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
553 | else | |
554 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
555 | } | |
a67d7c5f DC |
556 | |
557 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
558 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
559 | ||
560 | return 0; | |
561 | } | |
1da177e4 LT |
562 | __uint64_t |
563 | xfs_max_file_offset( | |
564 | unsigned int blockshift) | |
565 | { | |
566 | unsigned int pagefactor = 1; | |
567 | unsigned int bitshift = BITS_PER_LONG - 1; | |
568 | ||
569 | /* Figure out maximum filesize, on Linux this can depend on | |
570 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 571 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
572 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
573 | * So, for page sized blocks (4K on 32 bit platforms), | |
574 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
575 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
576 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
577 | * Note1: get_block_t takes a long (implicit cast from above) | |
578 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
579 | * can optionally convert the [unsigned] long from above into | |
580 | * an [unsigned] long long. | |
581 | */ | |
582 | ||
583 | #if BITS_PER_LONG == 32 | |
90c699a9 | 584 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
585 | ASSERT(sizeof(sector_t) == 8); |
586 | pagefactor = PAGE_CACHE_SIZE; | |
587 | bitshift = BITS_PER_LONG; | |
588 | # else | |
589 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
590 | # endif | |
591 | #endif | |
592 | ||
593 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
594 | } | |
595 | ||
3180e66d | 596 | STATIC int |
1da177e4 LT |
597 | xfs_blkdev_get( |
598 | xfs_mount_t *mp, | |
599 | const char *name, | |
600 | struct block_device **bdevp) | |
601 | { | |
602 | int error = 0; | |
603 | ||
d4d77629 TH |
604 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
605 | mp); | |
1da177e4 LT |
606 | if (IS_ERR(*bdevp)) { |
607 | error = PTR_ERR(*bdevp); | |
4f10700a | 608 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
609 | } |
610 | ||
611 | return -error; | |
612 | } | |
613 | ||
3180e66d | 614 | STATIC void |
1da177e4 LT |
615 | xfs_blkdev_put( |
616 | struct block_device *bdev) | |
617 | { | |
618 | if (bdev) | |
e525fd89 | 619 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
620 | } |
621 | ||
f538d4da CH |
622 | void |
623 | xfs_blkdev_issue_flush( | |
624 | xfs_buftarg_t *buftarg) | |
625 | { | |
dd3932ed | 626 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); |
f538d4da | 627 | } |
1da177e4 | 628 | |
19f354d4 CH |
629 | STATIC void |
630 | xfs_close_devices( | |
631 | struct xfs_mount *mp) | |
632 | { | |
633 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 634 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 635 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 636 | xfs_blkdev_put(logdev); |
19f354d4 CH |
637 | } |
638 | if (mp->m_rtdev_targp) { | |
c032bfcf | 639 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 640 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 641 | xfs_blkdev_put(rtdev); |
19f354d4 | 642 | } |
b7963133 | 643 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
644 | } |
645 | ||
646 | /* | |
647 | * The file system configurations are: | |
648 | * (1) device (partition) with data and internal log | |
649 | * (2) logical volume with data and log subvolumes. | |
650 | * (3) logical volume with data, log, and realtime subvolumes. | |
651 | * | |
652 | * We only have to handle opening the log and realtime volumes here if | |
653 | * they are present. The data subvolume has already been opened by | |
654 | * get_sb_bdev() and is stored in sb->s_bdev. | |
655 | */ | |
656 | STATIC int | |
657 | xfs_open_devices( | |
9d565ffa | 658 | struct xfs_mount *mp) |
19f354d4 CH |
659 | { |
660 | struct block_device *ddev = mp->m_super->s_bdev; | |
661 | struct block_device *logdev = NULL, *rtdev = NULL; | |
662 | int error; | |
663 | ||
664 | /* | |
665 | * Open real time and log devices - order is important. | |
666 | */ | |
9d565ffa CH |
667 | if (mp->m_logname) { |
668 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
669 | if (error) |
670 | goto out; | |
671 | } | |
672 | ||
9d565ffa CH |
673 | if (mp->m_rtname) { |
674 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
675 | if (error) |
676 | goto out_close_logdev; | |
677 | ||
678 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
679 | xfs_warn(mp, |
680 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
19f354d4 CH |
681 | error = EINVAL; |
682 | goto out_close_rtdev; | |
683 | } | |
684 | } | |
685 | ||
686 | /* | |
687 | * Setup xfs_mount buffer target pointers | |
688 | */ | |
689 | error = ENOMEM; | |
ebad861b | 690 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
691 | if (!mp->m_ddev_targp) |
692 | goto out_close_rtdev; | |
693 | ||
694 | if (rtdev) { | |
ebad861b DC |
695 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
696 | mp->m_fsname); | |
19f354d4 CH |
697 | if (!mp->m_rtdev_targp) |
698 | goto out_free_ddev_targ; | |
699 | } | |
700 | ||
701 | if (logdev && logdev != ddev) { | |
ebad861b DC |
702 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
703 | mp->m_fsname); | |
19f354d4 CH |
704 | if (!mp->m_logdev_targp) |
705 | goto out_free_rtdev_targ; | |
706 | } else { | |
707 | mp->m_logdev_targp = mp->m_ddev_targp; | |
708 | } | |
709 | ||
710 | return 0; | |
711 | ||
712 | out_free_rtdev_targ: | |
713 | if (mp->m_rtdev_targp) | |
b7963133 | 714 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 715 | out_free_ddev_targ: |
b7963133 | 716 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
717 | out_close_rtdev: |
718 | if (rtdev) | |
719 | xfs_blkdev_put(rtdev); | |
720 | out_close_logdev: | |
721 | if (logdev && logdev != ddev) | |
722 | xfs_blkdev_put(logdev); | |
723 | out: | |
724 | return error; | |
725 | } | |
726 | ||
e34b562c CH |
727 | /* |
728 | * Setup xfs_mount buffer target pointers based on superblock | |
729 | */ | |
730 | STATIC int | |
731 | xfs_setup_devices( | |
732 | struct xfs_mount *mp) | |
733 | { | |
734 | int error; | |
19f354d4 | 735 | |
e34b562c CH |
736 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
737 | mp->m_sb.sb_sectsize); | |
738 | if (error) | |
739 | return error; | |
740 | ||
741 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
742 | unsigned int log_sector_size = BBSIZE; | |
743 | ||
744 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
745 | log_sector_size = mp->m_sb.sb_logsectsize; | |
746 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
747 | mp->m_sb.sb_blocksize, | |
748 | log_sector_size); | |
749 | if (error) | |
750 | return error; | |
751 | } | |
752 | if (mp->m_rtdev_targp) { | |
753 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
754 | mp->m_sb.sb_blocksize, | |
755 | mp->m_sb.sb_sectsize); | |
756 | if (error) | |
757 | return error; | |
758 | } | |
759 | ||
760 | return 0; | |
761 | } | |
19f354d4 | 762 | |
bf904248 | 763 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 764 | STATIC struct inode * |
a50cd269 | 765 | xfs_fs_alloc_inode( |
1da177e4 LT |
766 | struct super_block *sb) |
767 | { | |
bf904248 | 768 | BUG(); |
493dca61 | 769 | return NULL; |
1da177e4 LT |
770 | } |
771 | ||
bf904248 | 772 | /* |
99fa8cb3 DC |
773 | * Now that the generic code is guaranteed not to be accessing |
774 | * the linux inode, we can reclaim the inode. | |
bf904248 | 775 | */ |
1da177e4 | 776 | STATIC void |
a50cd269 | 777 | xfs_fs_destroy_inode( |
848ce8f7 | 778 | struct inode *inode) |
1da177e4 | 779 | { |
848ce8f7 CH |
780 | struct xfs_inode *ip = XFS_I(inode); |
781 | ||
cca28fb8 | 782 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
783 | |
784 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
785 | |
786 | /* bad inode, get out here ASAP */ | |
787 | if (is_bad_inode(inode)) | |
788 | goto out_reclaim; | |
789 | ||
848ce8f7 CH |
790 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
791 | ||
792 | /* | |
793 | * We should never get here with one of the reclaim flags already set. | |
794 | */ | |
795 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
796 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
797 | ||
798 | /* | |
57817c68 DC |
799 | * We always use background reclaim here because even if the |
800 | * inode is clean, it still may be under IO and hence we have | |
801 | * to take the flush lock. The background reclaim path handles | |
802 | * this more efficiently than we can here, so simply let background | |
803 | * reclaim tear down all inodes. | |
848ce8f7 | 804 | */ |
848ce8f7 | 805 | out_reclaim: |
57817c68 | 806 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
807 | } |
808 | ||
07c8f675 DC |
809 | /* |
810 | * Slab object creation initialisation for the XFS inode. | |
811 | * This covers only the idempotent fields in the XFS inode; | |
812 | * all other fields need to be initialised on allocation | |
b595076a | 813 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
814 | * fields in the xfs inode that left in the initialise state |
815 | * when freeing the inode. | |
816 | */ | |
bf904248 DC |
817 | STATIC void |
818 | xfs_fs_inode_init_once( | |
07c8f675 DC |
819 | void *inode) |
820 | { | |
821 | struct xfs_inode *ip = inode; | |
822 | ||
823 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
824 | |
825 | /* vfs inode */ | |
826 | inode_init_once(VFS_I(ip)); | |
827 | ||
828 | /* xfs inode */ | |
07c8f675 DC |
829 | atomic_set(&ip->i_pincount, 0); |
830 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
831 | |
832 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
833 | "xfsino", ip->i_ino); | |
07c8f675 DC |
834 | } |
835 | ||
f9581b14 CH |
836 | /* |
837 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that | |
dcd79a14 | 838 | * we catch unlogged VFS level updates to the inode. |
f9581b14 CH |
839 | * |
840 | * We need the barrier() to maintain correct ordering between unlogged | |
841 | * updates and the transaction commit code that clears the i_update_core | |
842 | * field. This requires all updates to be completed before marking the | |
843 | * inode dirty. | |
844 | */ | |
845 | STATIC void | |
846 | xfs_fs_dirty_inode( | |
aa385729 CH |
847 | struct inode *inode, |
848 | int flags) | |
f9581b14 CH |
849 | { |
850 | barrier(); | |
851 | XFS_I(inode)->i_update_core = 1; | |
852 | } | |
853 | ||
1da177e4 | 854 | STATIC int |
a50cd269 | 855 | xfs_fs_write_inode( |
1da177e4 | 856 | struct inode *inode, |
a9185b41 | 857 | struct writeback_control *wbc) |
1da177e4 | 858 | { |
2e656092 | 859 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 860 | struct xfs_mount *mp = ip->i_mount; |
07fec736 | 861 | int error = EAGAIN; |
1da177e4 | 862 | |
cca28fb8 | 863 | trace_xfs_write_inode(ip); |
d4bb6d06 CH |
864 | |
865 | if (XFS_FORCED_SHUTDOWN(mp)) | |
58d84c4e | 866 | return -XFS_ERROR(EIO); |
d4bb6d06 | 867 | |
0b8fd303 | 868 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->for_kupdate) { |
07fec736 | 869 | /* |
7a36c8a9 CH |
870 | * Make sure the inode has made it it into the log. Instead |
871 | * of forcing it all the way to stable storage using a | |
872 | * synchronous transaction we let the log force inside the | |
873 | * ->sync_fs call do that for thus, which reduces the number | |
4a06fd26 | 874 | * of synchronous log forces dramatically. |
07fec736 | 875 | */ |
be4f1ac8 | 876 | error = xfs_log_dirty_inode(ip, NULL, 0); |
58d84c4e CH |
877 | if (error) |
878 | goto out; | |
879 | return 0; | |
d4bb6d06 | 880 | } else { |
be4f1ac8 CH |
881 | if (!ip->i_update_core) |
882 | return 0; | |
883 | ||
07fec736 CH |
884 | /* |
885 | * We make this non-blocking if the inode is contended, return | |
886 | * EAGAIN to indicate to the caller that they did not succeed. | |
887 | * This prevents the flush path from blocking on inodes inside | |
7a36c8a9 CH |
888 | * another operation right now, they get caught later by |
889 | * xfs_sync. | |
07fec736 | 890 | */ |
d4bb6d06 CH |
891 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
892 | goto out; | |
07fec736 | 893 | |
7a36c8a9 CH |
894 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) |
895 | goto out_unlock; | |
d4bb6d06 | 896 | |
7a36c8a9 CH |
897 | /* |
898 | * Now we have the flush lock and the inode is not pinned, we | |
899 | * can check if the inode is really clean as we know that | |
900 | * there are no pending transaction completions, it is not | |
901 | * waiting on the delayed write queue and there is no IO in | |
902 | * progress. | |
903 | */ | |
904 | if (xfs_inode_clean(ip)) { | |
905 | xfs_ifunlock(ip); | |
906 | error = 0; | |
907 | goto out_unlock; | |
908 | } | |
1bfd8d04 | 909 | error = xfs_iflush(ip, SYNC_TRYLOCK); |
d4bb6d06 CH |
910 | } |
911 | ||
912 | out_unlock: | |
913 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
914 | out: | |
e893bffd LM |
915 | /* |
916 | * if we failed to write out the inode then mark | |
917 | * it dirty again so we'll try again later. | |
918 | */ | |
919 | if (error) | |
2e656092 | 920 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
921 | return -error; |
922 | } | |
923 | ||
924 | STATIC void | |
b57922d9 | 925 | xfs_fs_evict_inode( |
1da177e4 LT |
926 | struct inode *inode) |
927 | { | |
1543d79c | 928 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 929 | |
b57922d9 | 930 | trace_xfs_evict_inode(ip); |
cca28fb8 | 931 | |
b57922d9 AV |
932 | truncate_inode_pages(&inode->i_data, 0); |
933 | end_writeback(inode); | |
99fa8cb3 DC |
934 | XFS_STATS_INC(vn_rele); |
935 | XFS_STATS_INC(vn_remove); | |
936 | XFS_STATS_DEC(vn_active); | |
937 | ||
033da48f CH |
938 | /* |
939 | * The iolock is used by the file system to coordinate reads, | |
940 | * writes, and block truncates. Up to this point the lock | |
941 | * protected concurrent accesses by users of the inode. But | |
942 | * from here forward we're doing some final processing of the | |
943 | * inode because we're done with it, and although we reuse the | |
944 | * iolock for protection it is really a distinct lock class | |
945 | * (in the lockdep sense) from before. To keep lockdep happy | |
946 | * (and basically indicate what we are doing), we explicitly | |
947 | * re-init the iolock here. | |
948 | */ | |
949 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
950 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
dcfcf205 DC |
951 | lockdep_set_class_and_name(&ip->i_iolock.mr_lock, |
952 | &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); | |
033da48f | 953 | |
99fa8cb3 | 954 | xfs_inactive(ip); |
56d433e4 | 955 | } |
1da177e4 | 956 | |
a738159d CH |
957 | STATIC void |
958 | xfs_free_fsname( | |
959 | struct xfs_mount *mp) | |
960 | { | |
961 | kfree(mp->m_fsname); | |
962 | kfree(mp->m_rtname); | |
963 | kfree(mp->m_logname); | |
964 | } | |
965 | ||
1da177e4 | 966 | STATIC void |
a50cd269 | 967 | xfs_fs_put_super( |
1da177e4 LT |
968 | struct super_block *sb) |
969 | { | |
745f6919 | 970 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 971 | |
a167b17e | 972 | xfs_syncd_stop(mp); |
075fe102 | 973 | |
e48ad316 CH |
974 | /* |
975 | * Blow away any referenced inode in the filestreams cache. | |
976 | * This can and will cause log traffic as inodes go inactive | |
977 | * here. | |
978 | */ | |
979 | xfs_filestream_unmount(mp); | |
980 | ||
a9add83e | 981 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
e48ad316 | 982 | |
19f354d4 | 983 | xfs_unmountfs(mp); |
6203300e | 984 | xfs_freesb(mp); |
c962fb79 | 985 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 986 | xfs_close_devices(mp); |
a738159d | 987 | xfs_free_fsname(mp); |
c962fb79 | 988 | kfree(mp); |
1da177e4 LT |
989 | } |
990 | ||
1da177e4 | 991 | STATIC int |
69961a26 | 992 | xfs_fs_sync_fs( |
1da177e4 LT |
993 | struct super_block *sb, |
994 | int wait) | |
995 | { | |
745f6919 | 996 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 997 | int error; |
1da177e4 | 998 | |
e893bffd | 999 | /* |
34625c66 | 1000 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1001 | */ |
34625c66 | 1002 | if (!wait) |
69961a26 | 1003 | return 0; |
69961a26 CH |
1004 | |
1005 | error = xfs_quiesce_data(mp); | |
1006 | if (error) | |
1007 | return -error; | |
1da177e4 | 1008 | |
69961a26 | 1009 | if (laptop_mode) { |
1da177e4 LT |
1010 | /* |
1011 | * The disk must be active because we're syncing. | |
1012 | * We schedule xfssyncd now (now that the disk is | |
1013 | * active) instead of later (when it might not be). | |
1014 | */ | |
c6d09b66 | 1015 | flush_delayed_work_sync(&mp->m_sync_work); |
1da177e4 LT |
1016 | } |
1017 | ||
69961a26 | 1018 | return 0; |
1da177e4 LT |
1019 | } |
1020 | ||
1021 | STATIC int | |
a50cd269 | 1022 | xfs_fs_statfs( |
726c3342 | 1023 | struct dentry *dentry, |
1da177e4 LT |
1024 | struct kstatfs *statp) |
1025 | { | |
4ca488eb CH |
1026 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1027 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1028 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1029 | __uint64_t fakeinos, id; |
1030 | xfs_extlen_t lsize; | |
2fe33661 | 1031 | __int64_t ffree; |
4ca488eb CH |
1032 | |
1033 | statp->f_type = XFS_SB_MAGIC; | |
1034 | statp->f_namelen = MAXNAMELEN - 1; | |
1035 | ||
1036 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1037 | statp->f_fsid.val[0] = (u32)id; | |
1038 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1039 | ||
d4d90b57 | 1040 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1041 | |
1042 | spin_lock(&mp->m_sb_lock); | |
1043 | statp->f_bsize = sbp->sb_blocksize; | |
1044 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1045 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1046 | statp->f_bfree = statp->f_bavail = | |
1047 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1048 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1049 | statp->f_files = |
1050 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1051 | if (mp->m_maxicount) | |
a19d9f88 CH |
1052 | statp->f_files = min_t(typeof(statp->f_files), |
1053 | statp->f_files, | |
1054 | mp->m_maxicount); | |
2fe33661 SB |
1055 | |
1056 | /* make sure statp->f_ffree does not underflow */ | |
1057 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1058 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1059 | ||
4ca488eb CH |
1060 | spin_unlock(&mp->m_sb_lock); |
1061 | ||
7d095257 CH |
1062 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1063 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1064 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1065 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1066 | return 0; |
1da177e4 LT |
1067 | } |
1068 | ||
d5db0f97 ES |
1069 | STATIC void |
1070 | xfs_save_resvblks(struct xfs_mount *mp) | |
1071 | { | |
1072 | __uint64_t resblks = 0; | |
1073 | ||
1074 | mp->m_resblks_save = mp->m_resblks; | |
1075 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1076 | } | |
1077 | ||
1078 | STATIC void | |
1079 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1080 | { | |
1081 | __uint64_t resblks; | |
1082 | ||
1083 | if (mp->m_resblks_save) { | |
1084 | resblks = mp->m_resblks_save; | |
1085 | mp->m_resblks_save = 0; | |
1086 | } else | |
1087 | resblks = xfs_default_resblks(mp); | |
1088 | ||
1089 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1090 | } | |
1091 | ||
1da177e4 | 1092 | STATIC int |
a50cd269 | 1093 | xfs_fs_remount( |
1da177e4 LT |
1094 | struct super_block *sb, |
1095 | int *flags, | |
1096 | char *options) | |
1097 | { | |
745f6919 | 1098 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1099 | substring_t args[MAX_OPT_ARGS]; |
1100 | char *p; | |
7884bc86 | 1101 | int error; |
1da177e4 | 1102 | |
62a877e3 CH |
1103 | while ((p = strsep(&options, ",")) != NULL) { |
1104 | int token; | |
bdd907ba | 1105 | |
62a877e3 CH |
1106 | if (!*p) |
1107 | continue; | |
48b62a1a | 1108 | |
62a877e3 CH |
1109 | token = match_token(p, tokens, args); |
1110 | switch (token) { | |
1111 | case Opt_barrier: | |
48b62a1a | 1112 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1113 | break; |
1114 | case Opt_nobarrier: | |
48b62a1a | 1115 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1116 | break; |
1117 | default: | |
6efdf281 CH |
1118 | /* |
1119 | * Logically we would return an error here to prevent | |
1120 | * users from believing they might have changed | |
1121 | * mount options using remount which can't be changed. | |
1122 | * | |
1123 | * But unfortunately mount(8) adds all options from | |
1124 | * mtab and fstab to the mount arguments in some cases | |
1125 | * so we can't blindly reject options, but have to | |
1126 | * check for each specified option if it actually | |
1127 | * differs from the currently set option and only | |
1128 | * reject it if that's the case. | |
1129 | * | |
1130 | * Until that is implemented we return success for | |
1131 | * every remount request, and silently ignore all | |
1132 | * options that we can't actually change. | |
1133 | */ | |
1134 | #if 0 | |
4f10700a DC |
1135 | xfs_info(mp, |
1136 | "mount option \"%s\" not supported for remount\n", p); | |
62a877e3 | 1137 | return -EINVAL; |
6efdf281 | 1138 | #else |
6c5e51da | 1139 | break; |
6efdf281 | 1140 | #endif |
48b62a1a | 1141 | } |
62a877e3 CH |
1142 | } |
1143 | ||
7884bc86 | 1144 | /* ro -> rw */ |
62a877e3 CH |
1145 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1146 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1147 | |
1148 | /* | |
1149 | * If this is the first remount to writeable state we | |
1150 | * might have some superblock changes to update. | |
1151 | */ | |
1152 | if (mp->m_update_flags) { | |
1153 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1154 | if (error) { | |
4f10700a | 1155 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1156 | return error; |
1157 | } | |
1158 | mp->m_update_flags = 0; | |
1159 | } | |
cbe132a8 DC |
1160 | |
1161 | /* | |
1162 | * Fill out the reserve pool if it is empty. Use the stashed | |
1163 | * value if it is non-zero, otherwise go with the default. | |
1164 | */ | |
d5db0f97 | 1165 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1166 | } |
1167 | ||
1168 | /* rw -> ro */ | |
1169 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1170 | /* |
1171 | * After we have synced the data but before we sync the | |
1172 | * metadata, we need to free up the reserve block pool so that | |
1173 | * the used block count in the superblock on disk is correct at | |
1174 | * the end of the remount. Stash the current reserve pool size | |
1175 | * so that if we get remounted rw, we can return it to the same | |
1176 | * size. | |
1177 | */ | |
cbe132a8 | 1178 | |
e9f1c6ee | 1179 | xfs_quiesce_data(mp); |
d5db0f97 | 1180 | xfs_save_resvblks(mp); |
76bf105c | 1181 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1182 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1183 | } | |
1184 | ||
62a877e3 | 1185 | return 0; |
1da177e4 LT |
1186 | } |
1187 | ||
9909c4aa CH |
1188 | /* |
1189 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1190 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1191 | * record to dirty the log in case of a crash while frozen. |
1192 | */ | |
c4be0c1d TS |
1193 | STATIC int |
1194 | xfs_fs_freeze( | |
1da177e4 LT |
1195 | struct super_block *sb) |
1196 | { | |
9909c4aa CH |
1197 | struct xfs_mount *mp = XFS_M(sb); |
1198 | ||
d5db0f97 | 1199 | xfs_save_resvblks(mp); |
76bf105c | 1200 | xfs_quiesce_attr(mp); |
c58efdb4 | 1201 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1202 | } |
1203 | ||
d5db0f97 ES |
1204 | STATIC int |
1205 | xfs_fs_unfreeze( | |
1206 | struct super_block *sb) | |
1207 | { | |
1208 | struct xfs_mount *mp = XFS_M(sb); | |
1209 | ||
1210 | xfs_restore_resvblks(mp); | |
1211 | return 0; | |
1212 | } | |
1213 | ||
1da177e4 | 1214 | STATIC int |
a50cd269 | 1215 | xfs_fs_show_options( |
1da177e4 | 1216 | struct seq_file *m, |
34c80b1d | 1217 | struct dentry *root) |
1da177e4 | 1218 | { |
34c80b1d | 1219 | return -xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1220 | } |
1221 | ||
f8f15e42 CH |
1222 | /* |
1223 | * This function fills in xfs_mount_t fields based on mount args. | |
1224 | * Note: the superblock _has_ now been read in. | |
1225 | */ | |
1226 | STATIC int | |
1227 | xfs_finish_flags( | |
f8f15e42 CH |
1228 | struct xfs_mount *mp) |
1229 | { | |
1230 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1231 | ||
025dfdaf | 1232 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1233 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1234 | if (mp->m_logbsize <= 0 && |
1235 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1236 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1237 | } else if (mp->m_logbsize > 0 && |
1238 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1239 | xfs_warn(mp, |
1240 | "logbuf size must be greater than or equal to log stripe size"); | |
f8f15e42 CH |
1241 | return XFS_ERROR(EINVAL); |
1242 | } | |
1243 | } else { | |
1244 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1245 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1246 | xfs_warn(mp, |
1247 | "logbuf size for version 1 logs must be 16K or 32K"); | |
f8f15e42 CH |
1248 | return XFS_ERROR(EINVAL); |
1249 | } | |
1250 | } | |
1251 | ||
1252 | /* | |
1253 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1254 | * told by noattr2 to turn it off | |
1255 | */ | |
1256 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1257 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1258 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1259 | ||
1260 | /* | |
1261 | * prohibit r/w mounts of read-only filesystems | |
1262 | */ | |
1263 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1264 | xfs_warn(mp, |
1265 | "cannot mount a read-only filesystem as read-write"); | |
f8f15e42 CH |
1266 | return XFS_ERROR(EROFS); |
1267 | } | |
1268 | ||
f8f15e42 CH |
1269 | return 0; |
1270 | } | |
1271 | ||
1da177e4 | 1272 | STATIC int |
a50cd269 | 1273 | xfs_fs_fill_super( |
1da177e4 LT |
1274 | struct super_block *sb, |
1275 | void *data, | |
1276 | int silent) | |
1277 | { | |
f3dcc13f | 1278 | struct inode *root; |
745f6919 | 1279 | struct xfs_mount *mp = NULL; |
c962fb79 | 1280 | int flags = 0, error = ENOMEM; |
bdd907ba | 1281 | |
c962fb79 CH |
1282 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1283 | if (!mp) | |
9d565ffa | 1284 | goto out; |
1da177e4 | 1285 | |
c962fb79 | 1286 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1287 | mutex_init(&mp->m_growlock); |
1288 | atomic_set(&mp->m_active_trans, 0); | |
74394496 | 1289 | |
b267ce99 CH |
1290 | mp->m_super = sb; |
1291 | sb->s_fs_info = mp; | |
1da177e4 | 1292 | |
288699fe | 1293 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1294 | if (error) |
9d565ffa | 1295 | goto out_free_fsname; |
1da177e4 LT |
1296 | |
1297 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1298 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1299 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1300 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1301 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1302 | #endif |
a50cd269 | 1303 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1304 | |
9d565ffa | 1305 | if (silent) |
f8f15e42 CH |
1306 | flags |= XFS_MFSI_QUIET; |
1307 | ||
9d565ffa | 1308 | error = xfs_open_devices(mp); |
19f354d4 | 1309 | if (error) |
288699fe | 1310 | goto out_free_fsname; |
f8f15e42 | 1311 | |
61ba35de CH |
1312 | error = xfs_icsb_init_counters(mp); |
1313 | if (error) | |
1314 | goto out_close_devices; | |
c962fb79 | 1315 | |
f8f15e42 CH |
1316 | error = xfs_readsb(mp, flags); |
1317 | if (error) | |
9d565ffa CH |
1318 | goto out_destroy_counters; |
1319 | ||
1320 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1321 | if (error) |
effa2eda | 1322 | goto out_free_sb; |
f8f15e42 | 1323 | |
e34b562c | 1324 | error = xfs_setup_devices(mp); |
19f354d4 | 1325 | if (error) |
effa2eda | 1326 | goto out_free_sb; |
f8f15e42 | 1327 | |
f8f15e42 CH |
1328 | error = xfs_filestream_mount(mp); |
1329 | if (error) | |
effa2eda | 1330 | goto out_free_sb; |
f8f15e42 | 1331 | |
704b2907 DC |
1332 | /* |
1333 | * we must configure the block size in the superblock before we run the | |
1334 | * full mount process as the mount process can lookup and cache inodes. | |
1335 | * For the same reason we must also initialise the syncd and register | |
1336 | * the inode cache shrinker so that inodes can be reclaimed during | |
1337 | * operations like a quotacheck that iterate all inodes in the | |
1338 | * filesystem. | |
1339 | */ | |
4ca488eb CH |
1340 | sb->s_magic = XFS_SB_MAGIC; |
1341 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1342 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1343 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1344 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1345 | sb->s_time_gran = 1; |
1346 | set_posix_acl_flag(sb); | |
1347 | ||
704b2907 DC |
1348 | error = xfs_mountfs(mp); |
1349 | if (error) | |
2bcf6e97 CH |
1350 | goto out_filestream_unmount; |
1351 | ||
1352 | error = xfs_syncd_init(mp); | |
1353 | if (error) | |
1354 | goto out_unmount; | |
704b2907 | 1355 | |
01651646 | 1356 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1357 | if (!root) { |
cbc89dcf | 1358 | error = ENOENT; |
2bcf6e97 | 1359 | goto out_syncd_stop; |
cbc89dcf | 1360 | } |
f3dcc13f CH |
1361 | if (is_bad_inode(root)) { |
1362 | error = EINVAL; | |
2bcf6e97 | 1363 | goto out_syncd_stop; |
1da177e4 | 1364 | } |
48fde701 | 1365 | sb->s_root = d_make_root(root); |
f3dcc13f CH |
1366 | if (!sb->s_root) { |
1367 | error = ENOMEM; | |
48fde701 | 1368 | goto out_syncd_stop; |
1da177e4 | 1369 | } |
74394496 | 1370 | |
1da177e4 LT |
1371 | return 0; |
1372 | ||
120226c1 CH |
1373 | out_filestream_unmount: |
1374 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1375 | out_free_sb: |
1376 | xfs_freesb(mp); | |
9d565ffa | 1377 | out_destroy_counters: |
c962fb79 | 1378 | xfs_icsb_destroy_counters(mp); |
61ba35de | 1379 | out_close_devices: |
19f354d4 | 1380 | xfs_close_devices(mp); |
9d565ffa CH |
1381 | out_free_fsname: |
1382 | xfs_free_fsname(mp); | |
c962fb79 | 1383 | kfree(mp); |
9d565ffa | 1384 | out: |
c962fb79 | 1385 | return -error; |
f8f15e42 | 1386 | |
2bcf6e97 | 1387 | out_syncd_stop: |
704b2907 | 1388 | xfs_syncd_stop(mp); |
2bcf6e97 | 1389 | out_unmount: |
e48ad316 CH |
1390 | /* |
1391 | * Blow away any referenced inode in the filestreams cache. | |
1392 | * This can and will cause log traffic as inodes go inactive | |
1393 | * here. | |
1394 | */ | |
1395 | xfs_filestream_unmount(mp); | |
1396 | ||
a9add83e | 1397 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
e48ad316 | 1398 | |
19f354d4 | 1399 | xfs_unmountfs(mp); |
6203300e | 1400 | goto out_free_sb; |
1da177e4 LT |
1401 | } |
1402 | ||
152a0836 AV |
1403 | STATIC struct dentry * |
1404 | xfs_fs_mount( | |
1da177e4 LT |
1405 | struct file_system_type *fs_type, |
1406 | int flags, | |
1407 | const char *dev_name, | |
152a0836 | 1408 | void *data) |
1da177e4 | 1409 | { |
152a0836 | 1410 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1411 | } |
1412 | ||
8daaa831 DC |
1413 | static int |
1414 | xfs_fs_nr_cached_objects( | |
1415 | struct super_block *sb) | |
1416 | { | |
1417 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1418 | } | |
1419 | ||
1420 | static void | |
1421 | xfs_fs_free_cached_objects( | |
1422 | struct super_block *sb, | |
1423 | int nr_to_scan) | |
1424 | { | |
1425 | xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); | |
1426 | } | |
1427 | ||
b87221de | 1428 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1429 | .alloc_inode = xfs_fs_alloc_inode, |
1430 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1431 | .dirty_inode = xfs_fs_dirty_inode, |
a50cd269 | 1432 | .write_inode = xfs_fs_write_inode, |
b57922d9 | 1433 | .evict_inode = xfs_fs_evict_inode, |
a50cd269 | 1434 | .put_super = xfs_fs_put_super, |
69961a26 | 1435 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1436 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1437 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1438 | .statfs = xfs_fs_statfs, |
1439 | .remount_fs = xfs_fs_remount, | |
1440 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1441 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1442 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1443 | }; |
1444 | ||
5085b607 | 1445 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1446 | .owner = THIS_MODULE, |
1447 | .name = "xfs", | |
152a0836 | 1448 | .mount = xfs_fs_mount, |
1da177e4 LT |
1449 | .kill_sb = kill_block_super, |
1450 | .fs_flags = FS_REQUIRES_DEV, | |
1451 | }; | |
1452 | ||
9f8868ff CH |
1453 | STATIC int __init |
1454 | xfs_init_zones(void) | |
1455 | { | |
9f8868ff CH |
1456 | |
1457 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1458 | if (!xfs_ioend_zone) | |
bf904248 | 1459 | goto out; |
9f8868ff CH |
1460 | |
1461 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1462 | xfs_ioend_zone); | |
1463 | if (!xfs_ioend_pool) | |
1464 | goto out_destroy_ioend_zone; | |
1465 | ||
1466 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1467 | "xfs_log_ticket"); | |
1468 | if (!xfs_log_ticket_zone) | |
1469 | goto out_destroy_ioend_pool; | |
1470 | ||
1471 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1472 | "xfs_bmap_free_item"); | |
1473 | if (!xfs_bmap_free_item_zone) | |
1474 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1475 | |
9f8868ff CH |
1476 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1477 | "xfs_btree_cur"); | |
1478 | if (!xfs_btree_cur_zone) | |
1479 | goto out_destroy_bmap_free_item_zone; | |
1480 | ||
1481 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1482 | "xfs_da_state"); | |
1483 | if (!xfs_da_state_zone) | |
1484 | goto out_destroy_btree_cur_zone; | |
1485 | ||
1486 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1487 | if (!xfs_dabuf_zone) | |
1488 | goto out_destroy_da_state_zone; | |
1489 | ||
1490 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1491 | if (!xfs_ifork_zone) | |
1492 | goto out_destroy_dabuf_zone; | |
1493 | ||
1494 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1495 | if (!xfs_trans_zone) | |
1496 | goto out_destroy_ifork_zone; | |
1497 | ||
e98c414f CH |
1498 | xfs_log_item_desc_zone = |
1499 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1500 | "xfs_log_item_desc"); | |
1501 | if (!xfs_log_item_desc_zone) | |
1502 | goto out_destroy_trans_zone; | |
1503 | ||
9f8868ff CH |
1504 | /* |
1505 | * The size of the zone allocated buf log item is the maximum | |
1506 | * size possible under XFS. This wastes a little bit of memory, | |
1507 | * but it is much faster. | |
1508 | */ | |
1509 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
c1155410 | 1510 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
9f8868ff CH |
1511 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
1512 | if (!xfs_buf_item_zone) | |
e98c414f | 1513 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1514 | |
1515 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1516 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1517 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1518 | if (!xfs_efd_zone) | |
1519 | goto out_destroy_buf_item_zone; | |
1520 | ||
1521 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1522 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1523 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1524 | if (!xfs_efi_zone) | |
1525 | goto out_destroy_efd_zone; | |
1526 | ||
1527 | xfs_inode_zone = | |
1528 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1529 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1530 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1531 | if (!xfs_inode_zone) |
1532 | goto out_destroy_efi_zone; | |
1533 | ||
1534 | xfs_ili_zone = | |
1535 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1536 | KM_ZONE_SPREAD, NULL); | |
1537 | if (!xfs_ili_zone) | |
1538 | goto out_destroy_inode_zone; | |
1539 | ||
9f8868ff CH |
1540 | return 0; |
1541 | ||
9f8868ff CH |
1542 | out_destroy_inode_zone: |
1543 | kmem_zone_destroy(xfs_inode_zone); | |
1544 | out_destroy_efi_zone: | |
1545 | kmem_zone_destroy(xfs_efi_zone); | |
1546 | out_destroy_efd_zone: | |
1547 | kmem_zone_destroy(xfs_efd_zone); | |
1548 | out_destroy_buf_item_zone: | |
1549 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1550 | out_destroy_log_item_desc_zone: |
1551 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1552 | out_destroy_trans_zone: |
1553 | kmem_zone_destroy(xfs_trans_zone); | |
1554 | out_destroy_ifork_zone: | |
1555 | kmem_zone_destroy(xfs_ifork_zone); | |
1556 | out_destroy_dabuf_zone: | |
1557 | kmem_zone_destroy(xfs_dabuf_zone); | |
1558 | out_destroy_da_state_zone: | |
1559 | kmem_zone_destroy(xfs_da_state_zone); | |
1560 | out_destroy_btree_cur_zone: | |
1561 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1562 | out_destroy_bmap_free_item_zone: | |
1563 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1564 | out_destroy_log_ticket_zone: | |
1565 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1566 | out_destroy_ioend_pool: | |
1567 | mempool_destroy(xfs_ioend_pool); | |
1568 | out_destroy_ioend_zone: | |
1569 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1570 | out: |
1571 | return -ENOMEM; | |
1572 | } | |
1573 | ||
1574 | STATIC void | |
1575 | xfs_destroy_zones(void) | |
1576 | { | |
9f8868ff CH |
1577 | kmem_zone_destroy(xfs_ili_zone); |
1578 | kmem_zone_destroy(xfs_inode_zone); | |
1579 | kmem_zone_destroy(xfs_efi_zone); | |
1580 | kmem_zone_destroy(xfs_efd_zone); | |
1581 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1582 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1583 | kmem_zone_destroy(xfs_trans_zone); |
1584 | kmem_zone_destroy(xfs_ifork_zone); | |
1585 | kmem_zone_destroy(xfs_dabuf_zone); | |
1586 | kmem_zone_destroy(xfs_da_state_zone); | |
1587 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1588 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1589 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1590 | mempool_destroy(xfs_ioend_pool); | |
1591 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1592 | |
1593 | } | |
1da177e4 | 1594 | |
0bf6a5bd DC |
1595 | STATIC int __init |
1596 | xfs_init_workqueues(void) | |
1597 | { | |
1598 | /* | |
40d344ec CH |
1599 | * We never want to the same work item to run twice, reclaiming inodes |
1600 | * or idling the log is not going to get any faster by multiple CPUs | |
1601 | * competing for ressources. Use the default large max_active value | |
1602 | * so that even lots of filesystems can perform these task in parallel. | |
0bf6a5bd | 1603 | */ |
40d344ec | 1604 | xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_NON_REENTRANT, 0); |
0bf6a5bd | 1605 | if (!xfs_syncd_wq) |
0030807c | 1606 | return -ENOMEM; |
0bf6a5bd | 1607 | return 0; |
0bf6a5bd DC |
1608 | } |
1609 | ||
39411f81 | 1610 | STATIC void |
0bf6a5bd DC |
1611 | xfs_destroy_workqueues(void) |
1612 | { | |
0bf6a5bd DC |
1613 | destroy_workqueue(xfs_syncd_wq); |
1614 | } | |
1615 | ||
1da177e4 | 1616 | STATIC int __init |
9f8868ff | 1617 | init_xfs_fs(void) |
1da177e4 LT |
1618 | { |
1619 | int error; | |
1da177e4 | 1620 | |
65795910 CH |
1621 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1622 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1623 | |
9f8868ff | 1624 | xfs_dir_startup(); |
1da177e4 | 1625 | |
8758280f | 1626 | error = xfs_init_zones(); |
9f8868ff CH |
1627 | if (error) |
1628 | goto out; | |
1629 | ||
0bf6a5bd | 1630 | error = xfs_init_workqueues(); |
9f8868ff | 1631 | if (error) |
0b1b213f | 1632 | goto out_destroy_zones; |
9f8868ff | 1633 | |
0bf6a5bd DC |
1634 | error = xfs_mru_cache_init(); |
1635 | if (error) | |
1636 | goto out_destroy_wq; | |
1637 | ||
9f8868ff CH |
1638 | error = xfs_filestream_init(); |
1639 | if (error) | |
1640 | goto out_mru_cache_uninit; | |
1da177e4 | 1641 | |
ce8e922c | 1642 | error = xfs_buf_init(); |
9f8868ff CH |
1643 | if (error) |
1644 | goto out_filestream_uninit; | |
1645 | ||
1646 | error = xfs_init_procfs(); | |
1647 | if (error) | |
1648 | goto out_buf_terminate; | |
1649 | ||
1650 | error = xfs_sysctl_register(); | |
1651 | if (error) | |
1652 | goto out_cleanup_procfs; | |
1da177e4 | 1653 | |
1da177e4 LT |
1654 | vfs_initquota(); |
1655 | ||
1656 | error = register_filesystem(&xfs_fs_type); | |
1657 | if (error) | |
0bf6a5bd | 1658 | goto out_sysctl_unregister; |
1da177e4 LT |
1659 | return 0; |
1660 | ||
9f8868ff CH |
1661 | out_sysctl_unregister: |
1662 | xfs_sysctl_unregister(); | |
1663 | out_cleanup_procfs: | |
1664 | xfs_cleanup_procfs(); | |
1665 | out_buf_terminate: | |
ce8e922c | 1666 | xfs_buf_terminate(); |
9f8868ff CH |
1667 | out_filestream_uninit: |
1668 | xfs_filestream_uninit(); | |
1669 | out_mru_cache_uninit: | |
1670 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1671 | out_destroy_wq: |
1672 | xfs_destroy_workqueues(); | |
9f8868ff | 1673 | out_destroy_zones: |
8758280f | 1674 | xfs_destroy_zones(); |
9f8868ff | 1675 | out: |
1da177e4 LT |
1676 | return error; |
1677 | } | |
1678 | ||
1679 | STATIC void __exit | |
9f8868ff | 1680 | exit_xfs_fs(void) |
1da177e4 LT |
1681 | { |
1682 | vfs_exitquota(); | |
1da177e4 | 1683 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1684 | xfs_sysctl_unregister(); |
1685 | xfs_cleanup_procfs(); | |
ce8e922c | 1686 | xfs_buf_terminate(); |
9f8868ff CH |
1687 | xfs_filestream_uninit(); |
1688 | xfs_mru_cache_uninit(); | |
0bf6a5bd | 1689 | xfs_destroy_workqueues(); |
8758280f | 1690 | xfs_destroy_zones(); |
1da177e4 LT |
1691 | } |
1692 | ||
1693 | module_init(init_xfs_fs); | |
1694 | module_exit(exit_xfs_fs); | |
1695 | ||
1696 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1697 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1698 | MODULE_LICENSE("GPL"); |