]>
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" |
1da177e4 | 20 | #include "xfs_log.h" |
a844f451 | 21 | #include "xfs_inum.h" |
1da177e4 LT |
22 | #include "xfs_trans.h" |
23 | #include "xfs_sb.h" | |
a844f451 | 24 | #include "xfs_ag.h" |
1da177e4 LT |
25 | #include "xfs_dir2.h" |
26 | #include "xfs_alloc.h" | |
1da177e4 LT |
27 | #include "xfs_quota.h" |
28 | #include "xfs_mount.h" | |
1da177e4 | 29 | #include "xfs_bmap_btree.h" |
a844f451 | 30 | #include "xfs_alloc_btree.h" |
1da177e4 | 31 | #include "xfs_ialloc_btree.h" |
1da177e4 LT |
32 | #include "xfs_dinode.h" |
33 | #include "xfs_inode.h" | |
a844f451 NS |
34 | #include "xfs_btree.h" |
35 | #include "xfs_ialloc.h" | |
1da177e4 | 36 | #include "xfs_bmap.h" |
1da177e4 LT |
37 | #include "xfs_rtalloc.h" |
38 | #include "xfs_error.h" | |
39 | #include "xfs_itable.h" | |
9909c4aa | 40 | #include "xfs_fsops.h" |
1da177e4 LT |
41 | #include "xfs_attr.h" |
42 | #include "xfs_buf_item.h" | |
43 | #include "xfs_utils.h" | |
739bfb2a | 44 | #include "xfs_vnodeops.h" |
a67d7c5f | 45 | #include "xfs_log_priv.h" |
249a8c11 | 46 | #include "xfs_trans_priv.h" |
48b62a1a | 47 | #include "xfs_filestream.h" |
9f8868ff | 48 | #include "xfs_da_btree.h" |
9f8868ff CH |
49 | #include "xfs_extfree_item.h" |
50 | #include "xfs_mru_cache.h" | |
51 | #include "xfs_inode_item.h" | |
fe4fa4b8 | 52 | #include "xfs_sync.h" |
0b1b213f | 53 | #include "xfs_trace.h" |
1da177e4 LT |
54 | |
55 | #include <linux/namei.h> | |
56 | #include <linux/init.h> | |
5a0e3ad6 | 57 | #include <linux/slab.h> |
1da177e4 | 58 | #include <linux/mount.h> |
0829c360 | 59 | #include <linux/mempool.h> |
1da177e4 | 60 | #include <linux/writeback.h> |
4df08c52 | 61 | #include <linux/kthread.h> |
7dfb7103 | 62 | #include <linux/freezer.h> |
62a877e3 | 63 | #include <linux/parser.h> |
1da177e4 | 64 | |
b87221de | 65 | static const struct super_operations xfs_super_operations; |
7989cb8e | 66 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 67 | mempool_t *xfs_ioend_pool; |
1da177e4 | 68 | |
a67d7c5f DC |
69 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
70 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
71 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
72 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
73 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
74 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
75 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
76 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
77 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
78 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
79 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
80 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
81 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
82 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
83 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
84 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
85 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
86 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
87 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
88 | * unwritten extent conversion */ | |
89 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f | 90 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
08bf5404 CM |
91 | #define MNTOPT_32BITINODE "inode32" /* inode allocation limited to |
92 | * XFS_MAXINUMBER_32 */ | |
a67d7c5f DC |
93 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
94 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
95 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
96 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
97 | * in stat(). */ | |
98 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
99 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
100 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
101 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
102 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
103 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
104 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
105 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
106 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
107 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
108 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
109 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
110 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
111 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
112 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
113 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ |
114 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ | |
115 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ | |
116 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 117 | |
62a877e3 CH |
118 | /* |
119 | * Table driven mount option parser. | |
120 | * | |
121 | * Currently only used for remount, but it will be used for mount | |
122 | * in the future, too. | |
123 | */ | |
124 | enum { | |
c3a58fec | 125 | Opt_barrier, Opt_nobarrier, Opt_inode64, Opt_err |
62a877e3 CH |
126 | }; |
127 | ||
a447c093 | 128 | static const match_table_t tokens = { |
62a877e3 CH |
129 | {Opt_barrier, "barrier"}, |
130 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 131 | {Opt_inode64, "inode64"}, |
62a877e3 CH |
132 | {Opt_err, NULL} |
133 | }; | |
134 | ||
135 | ||
a67d7c5f DC |
136 | STATIC unsigned long |
137 | suffix_strtoul(char *s, char **endp, unsigned int base) | |
138 | { | |
139 | int last, shift_left_factor = 0; | |
140 | char *value = s; | |
141 | ||
142 | last = strlen(value) - 1; | |
143 | if (value[last] == 'K' || value[last] == 'k') { | |
144 | shift_left_factor = 10; | |
145 | value[last] = '\0'; | |
146 | } | |
147 | if (value[last] == 'M' || value[last] == 'm') { | |
148 | shift_left_factor = 20; | |
149 | value[last] = '\0'; | |
150 | } | |
151 | if (value[last] == 'G' || value[last] == 'g') { | |
152 | shift_left_factor = 30; | |
153 | value[last] = '\0'; | |
154 | } | |
155 | ||
156 | return simple_strtoul((const char *)s, endp, base) << shift_left_factor; | |
157 | } | |
158 | ||
9d565ffa CH |
159 | /* |
160 | * This function fills in xfs_mount_t fields based on mount args. | |
161 | * Note: the superblock has _not_ yet been read in. | |
162 | * | |
163 | * Note that this function leaks the various device name allocations on | |
164 | * failure. The caller takes care of them. | |
165 | */ | |
a67d7c5f DC |
166 | STATIC int |
167 | xfs_parseargs( | |
168 | struct xfs_mount *mp, | |
288699fe | 169 | char *options) |
a67d7c5f | 170 | { |
9d565ffa | 171 | struct super_block *sb = mp->m_super; |
a67d7c5f | 172 | char *this_char, *value, *eov; |
9d565ffa CH |
173 | int dsunit = 0; |
174 | int dswidth = 0; | |
175 | int iosize = 0; | |
a5687787 | 176 | __uint8_t iosizelog = 0; |
9d565ffa | 177 | |
4f10700a DC |
178 | /* |
179 | * set up the mount name first so all the errors will refer to the | |
180 | * correct device. | |
181 | */ | |
182 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
183 | if (!mp->m_fsname) | |
184 | return ENOMEM; | |
185 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; | |
186 | ||
9d565ffa CH |
187 | /* |
188 | * Copy binary VFS mount flags we are interested in. | |
189 | */ | |
190 | if (sb->s_flags & MS_RDONLY) | |
191 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
192 | if (sb->s_flags & MS_DIRSYNC) | |
193 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
194 | if (sb->s_flags & MS_SYNCHRONOUS) | |
195 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
196 | ||
197 | /* | |
198 | * Set some default flags that could be cleared by the mount option | |
199 | * parsing. | |
200 | */ | |
201 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
202 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
08bf5404 | 203 | #if !XFS_BIG_INUMS |
9d565ffa | 204 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
08bf5404 | 205 | #endif |
a67d7c5f | 206 | |
9d565ffa CH |
207 | /* |
208 | * These can be overridden by the mount option parsing. | |
209 | */ | |
210 | mp->m_logbufs = -1; | |
211 | mp->m_logbsize = -1; | |
a67d7c5f DC |
212 | |
213 | if (!options) | |
214 | goto done; | |
215 | ||
a67d7c5f DC |
216 | while ((this_char = strsep(&options, ",")) != NULL) { |
217 | if (!*this_char) | |
218 | continue; | |
219 | if ((value = strchr(this_char, '=')) != NULL) | |
220 | *value++ = 0; | |
221 | ||
222 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
223 | if (!value || !*value) { | |
4f10700a | 224 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
225 | this_char); |
226 | return EINVAL; | |
227 | } | |
9d565ffa | 228 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
229 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
230 | if (!value || !*value) { | |
4f10700a | 231 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
232 | this_char); |
233 | return EINVAL; | |
234 | } | |
9d565ffa | 235 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
236 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
237 | if (!value || !*value) { | |
4f10700a | 238 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
239 | this_char); |
240 | return EINVAL; | |
241 | } | |
9d565ffa CH |
242 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
243 | if (!mp->m_logname) | |
244 | return ENOMEM; | |
a67d7c5f | 245 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 246 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe CH |
247 | this_char); |
248 | return EINVAL; | |
a67d7c5f DC |
249 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
250 | if (!value || !*value) { | |
4f10700a | 251 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
252 | this_char); |
253 | return EINVAL; | |
254 | } | |
9d565ffa CH |
255 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
256 | if (!mp->m_rtname) | |
257 | return ENOMEM; | |
a67d7c5f DC |
258 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
259 | if (!value || !*value) { | |
4f10700a | 260 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
261 | this_char); |
262 | return EINVAL; | |
263 | } | |
264 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 265 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
266 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
267 | if (!value || !*value) { | |
4f10700a | 268 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
269 | this_char); |
270 | return EINVAL; | |
271 | } | |
272 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 273 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
274 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
275 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
276 | mp->m_flags |= XFS_MOUNT_GRPID; | |
277 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
278 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
279 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
280 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 281 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 282 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 283 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 284 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 285 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 286 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 287 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
288 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
289 | if (!value || !*value) { | |
4f10700a | 290 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
291 | this_char); |
292 | return EINVAL; | |
293 | } | |
294 | dsunit = simple_strtoul(value, &eov, 10); | |
295 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
296 | if (!value || !*value) { | |
4f10700a | 297 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
298 | this_char); |
299 | return EINVAL; | |
300 | } | |
301 | dswidth = simple_strtoul(value, &eov, 10); | |
08bf5404 CM |
302 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
303 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 304 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 305 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 306 | #if !XFS_BIG_INUMS |
4f10700a | 307 | xfs_warn(mp, "%s option not allowed on this system", |
a67d7c5f DC |
308 | this_char); |
309 | return EINVAL; | |
310 | #endif | |
311 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 312 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 313 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 314 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 315 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 316 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 317 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 318 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 319 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 320 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 321 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 322 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 323 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 324 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 325 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 326 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 327 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
328 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
329 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 331 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 332 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
333 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
334 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
335 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
336 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
337 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
338 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
339 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
340 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
341 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
342 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
343 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
344 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
345 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
346 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
347 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
348 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 349 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
350 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
351 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
352 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
353 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
354 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
355 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 356 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
357 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
358 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 | 359 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
360 | xfs_warn(mp, |
361 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 362 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 363 | xfs_warn(mp, |
93b8a585 | 364 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
365 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
366 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
367 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
368 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 369 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
370 | xfs_warn(mp, |
371 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 372 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
373 | xfs_warn(mp, |
374 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 375 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
376 | xfs_warn(mp, |
377 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 378 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
379 | xfs_warn(mp, |
380 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 381 | } else { |
4f10700a | 382 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
a67d7c5f DC |
383 | return EINVAL; |
384 | } | |
385 | } | |
386 | ||
9d565ffa CH |
387 | /* |
388 | * no recovery flag requires a read-only mount | |
389 | */ | |
390 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
391 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 392 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
9d565ffa | 393 | return EINVAL; |
a67d7c5f DC |
394 | } |
395 | ||
9d565ffa | 396 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
397 | xfs_warn(mp, |
398 | "sunit and swidth options incompatible with the noalign option"); | |
a67d7c5f DC |
399 | return EINVAL; |
400 | } | |
401 | ||
7d095257 CH |
402 | #ifndef CONFIG_XFS_QUOTA |
403 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 404 | xfs_warn(mp, "quota support not available in this kernel."); |
7d095257 CH |
405 | return EINVAL; |
406 | } | |
407 | #endif | |
408 | ||
9d565ffa CH |
409 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
410 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
4f10700a | 411 | xfs_warn(mp, "cannot mount with both project and group quota"); |
a67d7c5f DC |
412 | return EINVAL; |
413 | } | |
414 | ||
a67d7c5f | 415 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 416 | xfs_warn(mp, "sunit and swidth must be specified together"); |
a67d7c5f DC |
417 | return EINVAL; |
418 | } | |
419 | ||
420 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
421 | xfs_warn(mp, |
422 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f DC |
423 | dswidth, dsunit); |
424 | return EINVAL; | |
425 | } | |
426 | ||
9d565ffa CH |
427 | done: |
428 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
429 | /* | |
430 | * At this point the superblock has not been read | |
431 | * in, therefore we do not know the block size. | |
432 | * Before the mount call ends we will convert | |
433 | * these to FSBs. | |
434 | */ | |
a67d7c5f | 435 | if (dsunit) { |
9d565ffa CH |
436 | mp->m_dalign = dsunit; |
437 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 438 | } |
9d565ffa CH |
439 | |
440 | if (dswidth) | |
441 | mp->m_swidth = dswidth; | |
442 | } | |
443 | ||
444 | if (mp->m_logbufs != -1 && | |
445 | mp->m_logbufs != 0 && | |
446 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
447 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 448 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa CH |
449 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
450 | return XFS_ERROR(EINVAL); | |
451 | } | |
452 | if (mp->m_logbsize != -1 && | |
453 | mp->m_logbsize != 0 && | |
454 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
455 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
456 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
457 | xfs_warn(mp, |
458 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa CH |
459 | mp->m_logbsize); |
460 | return XFS_ERROR(EINVAL); | |
461 | } | |
462 | ||
9d565ffa CH |
463 | if (iosizelog) { |
464 | if (iosizelog > XFS_MAX_IO_LOG || | |
465 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 466 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
467 | iosizelog, XFS_MIN_IO_LOG, |
468 | XFS_MAX_IO_LOG); | |
469 | return XFS_ERROR(EINVAL); | |
470 | } | |
471 | ||
472 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
473 | mp->m_readio_log = iosizelog; | |
474 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
475 | } |
476 | ||
a67d7c5f DC |
477 | return 0; |
478 | } | |
479 | ||
480 | struct proc_xfs_info { | |
481 | int flag; | |
482 | char *str; | |
483 | }; | |
484 | ||
485 | STATIC int | |
486 | xfs_showargs( | |
487 | struct xfs_mount *mp, | |
488 | struct seq_file *m) | |
489 | { | |
490 | static struct proc_xfs_info xfs_info_set[] = { | |
491 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 492 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 493 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
494 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
495 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
496 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
497 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
498 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
499 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 500 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 501 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 502 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
a67d7c5f DC |
503 | { 0, NULL } |
504 | }; | |
505 | static struct proc_xfs_info xfs_info_unset[] = { | |
506 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
507 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
508 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
509 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
510 | { 0, NULL } | |
511 | }; | |
512 | struct proc_xfs_info *xfs_infop; | |
513 | ||
514 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
515 | if (mp->m_flags & xfs_infop->flag) | |
516 | seq_puts(m, xfs_infop->str); | |
517 | } | |
518 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
519 | if (!(mp->m_flags & xfs_infop->flag)) | |
520 | seq_puts(m, xfs_infop->str); | |
521 | } | |
522 | ||
523 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
524 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
525 | (int)(1 << mp->m_writeio_log) >> 10); | |
526 | ||
527 | if (mp->m_logbufs > 0) | |
528 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
529 | if (mp->m_logbsize > 0) | |
530 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
531 | ||
532 | if (mp->m_logname) | |
533 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
534 | if (mp->m_rtname) | |
535 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
536 | ||
537 | if (mp->m_dalign > 0) | |
538 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
539 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
540 | if (mp->m_swidth > 0) | |
541 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
542 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
543 | ||
544 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
545 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
546 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
547 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
548 | ||
988abe40 AE |
549 | /* Either project or group quotas can be active, not both */ |
550 | ||
551 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
552 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
553 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
554 | else | |
555 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
556 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
557 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
558 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
559 | else | |
560 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
561 | } | |
a67d7c5f DC |
562 | |
563 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
564 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
565 | ||
566 | return 0; | |
567 | } | |
1da177e4 LT |
568 | __uint64_t |
569 | xfs_max_file_offset( | |
570 | unsigned int blockshift) | |
571 | { | |
572 | unsigned int pagefactor = 1; | |
573 | unsigned int bitshift = BITS_PER_LONG - 1; | |
574 | ||
575 | /* Figure out maximum filesize, on Linux this can depend on | |
576 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 577 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
578 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
579 | * So, for page sized blocks (4K on 32 bit platforms), | |
580 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
581 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
582 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
583 | * Note1: get_block_t takes a long (implicit cast from above) | |
584 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
585 | * can optionally convert the [unsigned] long from above into | |
586 | * an [unsigned] long long. | |
587 | */ | |
588 | ||
589 | #if BITS_PER_LONG == 32 | |
90c699a9 | 590 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
591 | ASSERT(sizeof(sector_t) == 8); |
592 | pagefactor = PAGE_CACHE_SIZE; | |
593 | bitshift = BITS_PER_LONG; | |
594 | # else | |
595 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
596 | # endif | |
597 | #endif | |
598 | ||
599 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
600 | } | |
601 | ||
3180e66d | 602 | STATIC int |
1da177e4 LT |
603 | xfs_blkdev_get( |
604 | xfs_mount_t *mp, | |
605 | const char *name, | |
606 | struct block_device **bdevp) | |
607 | { | |
608 | int error = 0; | |
609 | ||
d4d77629 TH |
610 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
611 | mp); | |
1da177e4 LT |
612 | if (IS_ERR(*bdevp)) { |
613 | error = PTR_ERR(*bdevp); | |
4f10700a | 614 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
615 | } |
616 | ||
617 | return -error; | |
618 | } | |
619 | ||
3180e66d | 620 | STATIC void |
1da177e4 LT |
621 | xfs_blkdev_put( |
622 | struct block_device *bdev) | |
623 | { | |
624 | if (bdev) | |
e525fd89 | 625 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
626 | } |
627 | ||
f538d4da CH |
628 | void |
629 | xfs_blkdev_issue_flush( | |
630 | xfs_buftarg_t *buftarg) | |
631 | { | |
7582df51 | 632 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 633 | } |
1da177e4 | 634 | |
19f354d4 CH |
635 | STATIC void |
636 | xfs_close_devices( | |
637 | struct xfs_mount *mp) | |
638 | { | |
639 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 640 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 641 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 642 | xfs_blkdev_put(logdev); |
19f354d4 CH |
643 | } |
644 | if (mp->m_rtdev_targp) { | |
c032bfcf | 645 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 646 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 647 | xfs_blkdev_put(rtdev); |
19f354d4 | 648 | } |
b7963133 | 649 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
650 | } |
651 | ||
652 | /* | |
653 | * The file system configurations are: | |
654 | * (1) device (partition) with data and internal log | |
655 | * (2) logical volume with data and log subvolumes. | |
656 | * (3) logical volume with data, log, and realtime subvolumes. | |
657 | * | |
658 | * We only have to handle opening the log and realtime volumes here if | |
659 | * they are present. The data subvolume has already been opened by | |
660 | * get_sb_bdev() and is stored in sb->s_bdev. | |
661 | */ | |
662 | STATIC int | |
663 | xfs_open_devices( | |
9d565ffa | 664 | struct xfs_mount *mp) |
19f354d4 CH |
665 | { |
666 | struct block_device *ddev = mp->m_super->s_bdev; | |
667 | struct block_device *logdev = NULL, *rtdev = NULL; | |
668 | int error; | |
669 | ||
670 | /* | |
671 | * Open real time and log devices - order is important. | |
672 | */ | |
9d565ffa CH |
673 | if (mp->m_logname) { |
674 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
675 | if (error) |
676 | goto out; | |
677 | } | |
678 | ||
9d565ffa CH |
679 | if (mp->m_rtname) { |
680 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
681 | if (error) |
682 | goto out_close_logdev; | |
683 | ||
684 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
685 | xfs_warn(mp, |
686 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
19f354d4 CH |
687 | error = EINVAL; |
688 | goto out_close_rtdev; | |
689 | } | |
690 | } | |
691 | ||
692 | /* | |
693 | * Setup xfs_mount buffer target pointers | |
694 | */ | |
695 | error = ENOMEM; | |
ebad861b | 696 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
697 | if (!mp->m_ddev_targp) |
698 | goto out_close_rtdev; | |
699 | ||
700 | if (rtdev) { | |
ebad861b DC |
701 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
702 | mp->m_fsname); | |
19f354d4 CH |
703 | if (!mp->m_rtdev_targp) |
704 | goto out_free_ddev_targ; | |
705 | } | |
706 | ||
707 | if (logdev && logdev != ddev) { | |
ebad861b DC |
708 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
709 | mp->m_fsname); | |
19f354d4 CH |
710 | if (!mp->m_logdev_targp) |
711 | goto out_free_rtdev_targ; | |
712 | } else { | |
713 | mp->m_logdev_targp = mp->m_ddev_targp; | |
714 | } | |
715 | ||
716 | return 0; | |
717 | ||
718 | out_free_rtdev_targ: | |
719 | if (mp->m_rtdev_targp) | |
b7963133 | 720 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 721 | out_free_ddev_targ: |
b7963133 | 722 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
723 | out_close_rtdev: |
724 | if (rtdev) | |
725 | xfs_blkdev_put(rtdev); | |
726 | out_close_logdev: | |
727 | if (logdev && logdev != ddev) | |
728 | xfs_blkdev_put(logdev); | |
729 | out: | |
730 | return error; | |
731 | } | |
732 | ||
e34b562c CH |
733 | /* |
734 | * Setup xfs_mount buffer target pointers based on superblock | |
735 | */ | |
736 | STATIC int | |
737 | xfs_setup_devices( | |
738 | struct xfs_mount *mp) | |
739 | { | |
740 | int error; | |
19f354d4 | 741 | |
e34b562c CH |
742 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
743 | mp->m_sb.sb_sectsize); | |
744 | if (error) | |
745 | return error; | |
746 | ||
747 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
748 | unsigned int log_sector_size = BBSIZE; | |
749 | ||
750 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
751 | log_sector_size = mp->m_sb.sb_logsectsize; | |
752 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
753 | mp->m_sb.sb_blocksize, | |
754 | log_sector_size); | |
755 | if (error) | |
756 | return error; | |
757 | } | |
758 | if (mp->m_rtdev_targp) { | |
759 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
760 | mp->m_sb.sb_blocksize, | |
761 | mp->m_sb.sb_sectsize); | |
762 | if (error) | |
763 | return error; | |
764 | } | |
765 | ||
766 | return 0; | |
767 | } | |
19f354d4 | 768 | |
aa6bf01d CH |
769 | STATIC int |
770 | xfs_init_mount_workqueues( | |
771 | struct xfs_mount *mp) | |
772 | { | |
773 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", | |
774 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
775 | if (!mp->m_data_workqueue) | |
776 | goto out; | |
777 | ||
778 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
779 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
780 | if (!mp->m_unwritten_workqueue) | |
781 | goto out_destroy_data_iodone_queue; | |
782 | ||
4c2d542f DC |
783 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
784 | WQ_MEM_RECLAIM, 0, mp->m_fsname); | |
785 | if (!mp->m_cil_workqueue) | |
786 | goto out_destroy_unwritten; | |
aa6bf01d CH |
787 | return 0; |
788 | ||
4c2d542f DC |
789 | out_destroy_unwritten: |
790 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
791 | out_destroy_data_iodone_queue: |
792 | destroy_workqueue(mp->m_data_workqueue); | |
793 | out: | |
794 | return -ENOMEM; | |
795 | } | |
796 | ||
797 | STATIC void | |
798 | xfs_destroy_mount_workqueues( | |
799 | struct xfs_mount *mp) | |
800 | { | |
4c2d542f | 801 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
802 | destroy_workqueue(mp->m_data_workqueue); |
803 | destroy_workqueue(mp->m_unwritten_workqueue); | |
804 | } | |
805 | ||
bf904248 | 806 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 807 | STATIC struct inode * |
a50cd269 | 808 | xfs_fs_alloc_inode( |
1da177e4 LT |
809 | struct super_block *sb) |
810 | { | |
bf904248 | 811 | BUG(); |
493dca61 | 812 | return NULL; |
1da177e4 LT |
813 | } |
814 | ||
bf904248 | 815 | /* |
99fa8cb3 DC |
816 | * Now that the generic code is guaranteed not to be accessing |
817 | * the linux inode, we can reclaim the inode. | |
bf904248 | 818 | */ |
1da177e4 | 819 | STATIC void |
a50cd269 | 820 | xfs_fs_destroy_inode( |
848ce8f7 | 821 | struct inode *inode) |
1da177e4 | 822 | { |
848ce8f7 CH |
823 | struct xfs_inode *ip = XFS_I(inode); |
824 | ||
cca28fb8 | 825 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
826 | |
827 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
828 | |
829 | /* bad inode, get out here ASAP */ | |
830 | if (is_bad_inode(inode)) | |
831 | goto out_reclaim; | |
832 | ||
848ce8f7 CH |
833 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
834 | ||
835 | /* | |
836 | * We should never get here with one of the reclaim flags already set. | |
837 | */ | |
838 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
839 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
840 | ||
841 | /* | |
57817c68 DC |
842 | * We always use background reclaim here because even if the |
843 | * inode is clean, it still may be under IO and hence we have | |
844 | * to take the flush lock. The background reclaim path handles | |
845 | * this more efficiently than we can here, so simply let background | |
846 | * reclaim tear down all inodes. | |
848ce8f7 | 847 | */ |
848ce8f7 | 848 | out_reclaim: |
57817c68 | 849 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
850 | } |
851 | ||
07c8f675 DC |
852 | /* |
853 | * Slab object creation initialisation for the XFS inode. | |
854 | * This covers only the idempotent fields in the XFS inode; | |
855 | * all other fields need to be initialised on allocation | |
b595076a | 856 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
857 | * fields in the xfs inode that left in the initialise state |
858 | * when freeing the inode. | |
859 | */ | |
bf904248 DC |
860 | STATIC void |
861 | xfs_fs_inode_init_once( | |
07c8f675 DC |
862 | void *inode) |
863 | { | |
864 | struct xfs_inode *ip = inode; | |
865 | ||
866 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
867 | |
868 | /* vfs inode */ | |
869 | inode_init_once(VFS_I(ip)); | |
870 | ||
871 | /* xfs inode */ | |
07c8f675 DC |
872 | atomic_set(&ip->i_pincount, 0); |
873 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
874 | |
875 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
876 | "xfsino", ip->i_ino); | |
07c8f675 DC |
877 | } |
878 | ||
1da177e4 | 879 | STATIC void |
b57922d9 | 880 | xfs_fs_evict_inode( |
1da177e4 LT |
881 | struct inode *inode) |
882 | { | |
1543d79c | 883 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 884 | |
4f59af75 CH |
885 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
886 | ||
b57922d9 | 887 | trace_xfs_evict_inode(ip); |
cca28fb8 | 888 | |
b57922d9 | 889 | truncate_inode_pages(&inode->i_data, 0); |
dbd5768f | 890 | clear_inode(inode); |
99fa8cb3 DC |
891 | XFS_STATS_INC(vn_rele); |
892 | XFS_STATS_INC(vn_remove); | |
893 | XFS_STATS_DEC(vn_active); | |
894 | ||
895 | xfs_inactive(ip); | |
56d433e4 | 896 | } |
1da177e4 | 897 | |
5132ba8f DC |
898 | /* |
899 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
900 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
901 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
902 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
903 | * we drop the final reference on. | |
904 | */ | |
905 | STATIC int | |
906 | xfs_fs_drop_inode( | |
907 | struct inode *inode) | |
908 | { | |
909 | struct xfs_inode *ip = XFS_I(inode); | |
910 | ||
911 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
912 | } | |
913 | ||
a738159d CH |
914 | STATIC void |
915 | xfs_free_fsname( | |
916 | struct xfs_mount *mp) | |
917 | { | |
918 | kfree(mp->m_fsname); | |
919 | kfree(mp->m_rtname); | |
920 | kfree(mp->m_logname); | |
921 | } | |
922 | ||
1da177e4 | 923 | STATIC void |
a50cd269 | 924 | xfs_fs_put_super( |
1da177e4 LT |
925 | struct super_block *sb) |
926 | { | |
745f6919 | 927 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 928 | |
e48ad316 | 929 | xfs_filestream_unmount(mp); |
4026c9fd | 930 | cancel_delayed_work_sync(&mp->m_sync_work); |
19f354d4 | 931 | xfs_unmountfs(mp); |
8a00ebe4 | 932 | xfs_syncd_stop(mp); |
6203300e | 933 | xfs_freesb(mp); |
c962fb79 | 934 | xfs_icsb_destroy_counters(mp); |
aa6bf01d | 935 | xfs_destroy_mount_workqueues(mp); |
19f354d4 | 936 | xfs_close_devices(mp); |
a738159d | 937 | xfs_free_fsname(mp); |
c962fb79 | 938 | kfree(mp); |
1da177e4 LT |
939 | } |
940 | ||
1da177e4 | 941 | STATIC int |
69961a26 | 942 | xfs_fs_sync_fs( |
1da177e4 LT |
943 | struct super_block *sb, |
944 | int wait) | |
945 | { | |
745f6919 | 946 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 947 | int error; |
1da177e4 | 948 | |
e893bffd | 949 | /* |
34625c66 | 950 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 951 | */ |
34625c66 | 952 | if (!wait) |
69961a26 | 953 | return 0; |
69961a26 CH |
954 | |
955 | error = xfs_quiesce_data(mp); | |
956 | if (error) | |
957 | return -error; | |
1da177e4 | 958 | |
69961a26 | 959 | if (laptop_mode) { |
1da177e4 LT |
960 | /* |
961 | * The disk must be active because we're syncing. | |
962 | * We schedule xfssyncd now (now that the disk is | |
963 | * active) instead of later (when it might not be). | |
964 | */ | |
c6d09b66 | 965 | flush_delayed_work_sync(&mp->m_sync_work); |
1da177e4 LT |
966 | } |
967 | ||
69961a26 | 968 | return 0; |
1da177e4 LT |
969 | } |
970 | ||
971 | STATIC int | |
a50cd269 | 972 | xfs_fs_statfs( |
726c3342 | 973 | struct dentry *dentry, |
1da177e4 LT |
974 | struct kstatfs *statp) |
975 | { | |
4ca488eb CH |
976 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
977 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 978 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
979 | __uint64_t fakeinos, id; |
980 | xfs_extlen_t lsize; | |
2fe33661 | 981 | __int64_t ffree; |
4ca488eb CH |
982 | |
983 | statp->f_type = XFS_SB_MAGIC; | |
984 | statp->f_namelen = MAXNAMELEN - 1; | |
985 | ||
986 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
987 | statp->f_fsid.val[0] = (u32)id; | |
988 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
989 | ||
d4d90b57 | 990 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
991 | |
992 | spin_lock(&mp->m_sb_lock); | |
993 | statp->f_bsize = sbp->sb_blocksize; | |
994 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
995 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
996 | statp->f_bfree = statp->f_bavail = | |
997 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
998 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
999 | statp->f_files = |
1000 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1001 | if (mp->m_maxicount) | |
a19d9f88 CH |
1002 | statp->f_files = min_t(typeof(statp->f_files), |
1003 | statp->f_files, | |
1004 | mp->m_maxicount); | |
2fe33661 SB |
1005 | |
1006 | /* make sure statp->f_ffree does not underflow */ | |
1007 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1008 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1009 | ||
4ca488eb CH |
1010 | spin_unlock(&mp->m_sb_lock); |
1011 | ||
da5bf95e | 1012 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
7d095257 CH |
1013 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == |
1014 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1015 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1016 | return 0; |
1da177e4 LT |
1017 | } |
1018 | ||
d5db0f97 ES |
1019 | STATIC void |
1020 | xfs_save_resvblks(struct xfs_mount *mp) | |
1021 | { | |
1022 | __uint64_t resblks = 0; | |
1023 | ||
1024 | mp->m_resblks_save = mp->m_resblks; | |
1025 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1026 | } | |
1027 | ||
1028 | STATIC void | |
1029 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1030 | { | |
1031 | __uint64_t resblks; | |
1032 | ||
1033 | if (mp->m_resblks_save) { | |
1034 | resblks = mp->m_resblks_save; | |
1035 | mp->m_resblks_save = 0; | |
1036 | } else | |
1037 | resblks = xfs_default_resblks(mp); | |
1038 | ||
1039 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1040 | } | |
1041 | ||
c3a58fec CM |
1042 | STATIC void |
1043 | xfs_set_inode64(struct xfs_mount *mp) | |
1044 | { | |
1045 | int i = 0; | |
1046 | ||
1047 | for (i = 0; i < mp->m_sb.sb_agcount; i++) { | |
1048 | struct xfs_perag *pag; | |
1049 | ||
1050 | pag = xfs_perag_get(mp, i); | |
1051 | pag->pagi_inodeok = 1; | |
1052 | pag->pagf_metadata = 0; | |
1053 | xfs_perag_put(pag); | |
1054 | } | |
1055 | ||
1056 | /* There is no need for lock protection on m_flags, | |
1057 | * the rw_semaphore of the VFS superblock is locked | |
1058 | * during mount/umount/remount operations, so this is | |
1059 | * enough to avoid concurency on the m_flags field | |
1060 | */ | |
1061 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
1062 | XFS_MOUNT_SMALL_INUMS); | |
1063 | mp->m_maxagi = i; | |
1064 | } | |
1065 | ||
1da177e4 | 1066 | STATIC int |
a50cd269 | 1067 | xfs_fs_remount( |
1da177e4 LT |
1068 | struct super_block *sb, |
1069 | int *flags, | |
1070 | char *options) | |
1071 | { | |
745f6919 | 1072 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1073 | substring_t args[MAX_OPT_ARGS]; |
1074 | char *p; | |
7884bc86 | 1075 | int error; |
1da177e4 | 1076 | |
62a877e3 CH |
1077 | while ((p = strsep(&options, ",")) != NULL) { |
1078 | int token; | |
bdd907ba | 1079 | |
62a877e3 CH |
1080 | if (!*p) |
1081 | continue; | |
48b62a1a | 1082 | |
62a877e3 CH |
1083 | token = match_token(p, tokens, args); |
1084 | switch (token) { | |
1085 | case Opt_barrier: | |
48b62a1a | 1086 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1087 | break; |
1088 | case Opt_nobarrier: | |
48b62a1a | 1089 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1090 | break; |
c3a58fec CM |
1091 | case Opt_inode64: |
1092 | xfs_set_inode64(mp); | |
1093 | break; | |
62a877e3 | 1094 | default: |
6efdf281 CH |
1095 | /* |
1096 | * Logically we would return an error here to prevent | |
1097 | * users from believing they might have changed | |
1098 | * mount options using remount which can't be changed. | |
1099 | * | |
1100 | * But unfortunately mount(8) adds all options from | |
1101 | * mtab and fstab to the mount arguments in some cases | |
1102 | * so we can't blindly reject options, but have to | |
1103 | * check for each specified option if it actually | |
1104 | * differs from the currently set option and only | |
1105 | * reject it if that's the case. | |
1106 | * | |
1107 | * Until that is implemented we return success for | |
1108 | * every remount request, and silently ignore all | |
1109 | * options that we can't actually change. | |
1110 | */ | |
1111 | #if 0 | |
4f10700a DC |
1112 | xfs_info(mp, |
1113 | "mount option \"%s\" not supported for remount\n", p); | |
62a877e3 | 1114 | return -EINVAL; |
6efdf281 | 1115 | #else |
6c5e51da | 1116 | break; |
6efdf281 | 1117 | #endif |
48b62a1a | 1118 | } |
62a877e3 CH |
1119 | } |
1120 | ||
7884bc86 | 1121 | /* ro -> rw */ |
62a877e3 CH |
1122 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1123 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1124 | |
1125 | /* | |
1126 | * If this is the first remount to writeable state we | |
1127 | * might have some superblock changes to update. | |
1128 | */ | |
1129 | if (mp->m_update_flags) { | |
1130 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1131 | if (error) { | |
4f10700a | 1132 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1133 | return error; |
1134 | } | |
1135 | mp->m_update_flags = 0; | |
1136 | } | |
cbe132a8 DC |
1137 | |
1138 | /* | |
1139 | * Fill out the reserve pool if it is empty. Use the stashed | |
1140 | * value if it is non-zero, otherwise go with the default. | |
1141 | */ | |
d5db0f97 | 1142 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1143 | } |
1144 | ||
1145 | /* rw -> ro */ | |
1146 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1147 | /* |
1148 | * After we have synced the data but before we sync the | |
1149 | * metadata, we need to free up the reserve block pool so that | |
1150 | * the used block count in the superblock on disk is correct at | |
1151 | * the end of the remount. Stash the current reserve pool size | |
1152 | * so that if we get remounted rw, we can return it to the same | |
1153 | * size. | |
1154 | */ | |
cbe132a8 | 1155 | |
e9f1c6ee | 1156 | xfs_quiesce_data(mp); |
d5db0f97 | 1157 | xfs_save_resvblks(mp); |
76bf105c | 1158 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1159 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1160 | } | |
1161 | ||
62a877e3 | 1162 | return 0; |
1da177e4 LT |
1163 | } |
1164 | ||
9909c4aa CH |
1165 | /* |
1166 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1167 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1168 | * record to dirty the log in case of a crash while frozen. |
1169 | */ | |
c4be0c1d TS |
1170 | STATIC int |
1171 | xfs_fs_freeze( | |
1da177e4 LT |
1172 | struct super_block *sb) |
1173 | { | |
9909c4aa CH |
1174 | struct xfs_mount *mp = XFS_M(sb); |
1175 | ||
d5db0f97 | 1176 | xfs_save_resvblks(mp); |
76bf105c | 1177 | xfs_quiesce_attr(mp); |
c58efdb4 | 1178 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1179 | } |
1180 | ||
d5db0f97 ES |
1181 | STATIC int |
1182 | xfs_fs_unfreeze( | |
1183 | struct super_block *sb) | |
1184 | { | |
1185 | struct xfs_mount *mp = XFS_M(sb); | |
1186 | ||
1187 | xfs_restore_resvblks(mp); | |
1188 | return 0; | |
1189 | } | |
1190 | ||
1da177e4 | 1191 | STATIC int |
a50cd269 | 1192 | xfs_fs_show_options( |
1da177e4 | 1193 | struct seq_file *m, |
34c80b1d | 1194 | struct dentry *root) |
1da177e4 | 1195 | { |
34c80b1d | 1196 | return -xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1197 | } |
1198 | ||
f8f15e42 CH |
1199 | /* |
1200 | * This function fills in xfs_mount_t fields based on mount args. | |
1201 | * Note: the superblock _has_ now been read in. | |
1202 | */ | |
1203 | STATIC int | |
1204 | xfs_finish_flags( | |
f8f15e42 CH |
1205 | struct xfs_mount *mp) |
1206 | { | |
1207 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1208 | ||
025dfdaf | 1209 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1210 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1211 | if (mp->m_logbsize <= 0 && |
1212 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1213 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1214 | } else if (mp->m_logbsize > 0 && |
1215 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1216 | xfs_warn(mp, |
1217 | "logbuf size must be greater than or equal to log stripe size"); | |
f8f15e42 CH |
1218 | return XFS_ERROR(EINVAL); |
1219 | } | |
1220 | } else { | |
1221 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1222 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1223 | xfs_warn(mp, |
1224 | "logbuf size for version 1 logs must be 16K or 32K"); | |
f8f15e42 CH |
1225 | return XFS_ERROR(EINVAL); |
1226 | } | |
1227 | } | |
1228 | ||
1229 | /* | |
1230 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1231 | * told by noattr2 to turn it off | |
1232 | */ | |
1233 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1234 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1235 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1236 | ||
1237 | /* | |
1238 | * prohibit r/w mounts of read-only filesystems | |
1239 | */ | |
1240 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1241 | xfs_warn(mp, |
1242 | "cannot mount a read-only filesystem as read-write"); | |
f8f15e42 CH |
1243 | return XFS_ERROR(EROFS); |
1244 | } | |
1245 | ||
f8f15e42 CH |
1246 | return 0; |
1247 | } | |
1248 | ||
1da177e4 | 1249 | STATIC int |
a50cd269 | 1250 | xfs_fs_fill_super( |
1da177e4 LT |
1251 | struct super_block *sb, |
1252 | void *data, | |
1253 | int silent) | |
1254 | { | |
f3dcc13f | 1255 | struct inode *root; |
745f6919 | 1256 | struct xfs_mount *mp = NULL; |
c962fb79 | 1257 | int flags = 0, error = ENOMEM; |
bdd907ba | 1258 | |
c962fb79 CH |
1259 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1260 | if (!mp) | |
9d565ffa | 1261 | goto out; |
1da177e4 | 1262 | |
c962fb79 | 1263 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1264 | mutex_init(&mp->m_growlock); |
1265 | atomic_set(&mp->m_active_trans, 0); | |
74394496 | 1266 | |
b267ce99 CH |
1267 | mp->m_super = sb; |
1268 | sb->s_fs_info = mp; | |
1da177e4 | 1269 | |
288699fe | 1270 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1271 | if (error) |
9d565ffa | 1272 | goto out_free_fsname; |
1da177e4 LT |
1273 | |
1274 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1275 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1276 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1277 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1278 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1279 | #endif |
a50cd269 | 1280 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1281 | |
9d565ffa | 1282 | if (silent) |
f8f15e42 CH |
1283 | flags |= XFS_MFSI_QUIET; |
1284 | ||
9d565ffa | 1285 | error = xfs_open_devices(mp); |
19f354d4 | 1286 | if (error) |
288699fe | 1287 | goto out_free_fsname; |
f8f15e42 | 1288 | |
aa6bf01d | 1289 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1290 | if (error) |
1291 | goto out_close_devices; | |
c962fb79 | 1292 | |
aa6bf01d CH |
1293 | error = xfs_icsb_init_counters(mp); |
1294 | if (error) | |
1295 | goto out_destroy_workqueues; | |
1296 | ||
f8f15e42 CH |
1297 | error = xfs_readsb(mp, flags); |
1298 | if (error) | |
9d565ffa CH |
1299 | goto out_destroy_counters; |
1300 | ||
1301 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1302 | if (error) |
effa2eda | 1303 | goto out_free_sb; |
f8f15e42 | 1304 | |
e34b562c | 1305 | error = xfs_setup_devices(mp); |
19f354d4 | 1306 | if (error) |
effa2eda | 1307 | goto out_free_sb; |
f8f15e42 | 1308 | |
f8f15e42 CH |
1309 | error = xfs_filestream_mount(mp); |
1310 | if (error) | |
effa2eda | 1311 | goto out_free_sb; |
f8f15e42 | 1312 | |
704b2907 DC |
1313 | /* |
1314 | * we must configure the block size in the superblock before we run the | |
1315 | * full mount process as the mount process can lookup and cache inodes. | |
1316 | * For the same reason we must also initialise the syncd and register | |
1317 | * the inode cache shrinker so that inodes can be reclaimed during | |
1318 | * operations like a quotacheck that iterate all inodes in the | |
1319 | * filesystem. | |
1320 | */ | |
4ca488eb CH |
1321 | sb->s_magic = XFS_SB_MAGIC; |
1322 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1323 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1324 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1325 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1326 | sb->s_time_gran = 1; |
1327 | set_posix_acl_flag(sb); | |
1328 | ||
8a00ebe4 | 1329 | error = xfs_syncd_init(mp); |
704b2907 | 1330 | if (error) |
2bcf6e97 CH |
1331 | goto out_filestream_unmount; |
1332 | ||
8a00ebe4 | 1333 | error = xfs_mountfs(mp); |
2bcf6e97 | 1334 | if (error) |
8a00ebe4 | 1335 | goto out_syncd_stop; |
704b2907 | 1336 | |
01651646 | 1337 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1338 | if (!root) { |
cbc89dcf | 1339 | error = ENOENT; |
8a00ebe4 | 1340 | goto out_unmount; |
cbc89dcf | 1341 | } |
f3dcc13f CH |
1342 | if (is_bad_inode(root)) { |
1343 | error = EINVAL; | |
8a00ebe4 | 1344 | goto out_unmount; |
1da177e4 | 1345 | } |
48fde701 | 1346 | sb->s_root = d_make_root(root); |
f3dcc13f CH |
1347 | if (!sb->s_root) { |
1348 | error = ENOMEM; | |
8a00ebe4 | 1349 | goto out_unmount; |
1da177e4 | 1350 | } |
74394496 | 1351 | |
1da177e4 | 1352 | return 0; |
8a00ebe4 DC |
1353 | out_syncd_stop: |
1354 | xfs_syncd_stop(mp); | |
120226c1 CH |
1355 | out_filestream_unmount: |
1356 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1357 | out_free_sb: |
1358 | xfs_freesb(mp); | |
9d565ffa | 1359 | out_destroy_counters: |
c962fb79 | 1360 | xfs_icsb_destroy_counters(mp); |
aa6bf01d CH |
1361 | out_destroy_workqueues: |
1362 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1363 | out_close_devices: |
19f354d4 | 1364 | xfs_close_devices(mp); |
9d565ffa CH |
1365 | out_free_fsname: |
1366 | xfs_free_fsname(mp); | |
c962fb79 | 1367 | kfree(mp); |
9d565ffa | 1368 | out: |
c962fb79 | 1369 | return -error; |
f8f15e42 | 1370 | |
2bcf6e97 | 1371 | out_unmount: |
e48ad316 | 1372 | xfs_filestream_unmount(mp); |
19f354d4 | 1373 | xfs_unmountfs(mp); |
8a00ebe4 | 1374 | xfs_syncd_stop(mp); |
6203300e | 1375 | goto out_free_sb; |
1da177e4 LT |
1376 | } |
1377 | ||
152a0836 AV |
1378 | STATIC struct dentry * |
1379 | xfs_fs_mount( | |
1da177e4 LT |
1380 | struct file_system_type *fs_type, |
1381 | int flags, | |
1382 | const char *dev_name, | |
152a0836 | 1383 | void *data) |
1da177e4 | 1384 | { |
152a0836 | 1385 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1386 | } |
1387 | ||
8daaa831 DC |
1388 | static int |
1389 | xfs_fs_nr_cached_objects( | |
1390 | struct super_block *sb) | |
1391 | { | |
1392 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1393 | } | |
1394 | ||
1395 | static void | |
1396 | xfs_fs_free_cached_objects( | |
1397 | struct super_block *sb, | |
1398 | int nr_to_scan) | |
1399 | { | |
1400 | xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); | |
1401 | } | |
1402 | ||
b87221de | 1403 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1404 | .alloc_inode = xfs_fs_alloc_inode, |
1405 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1406 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1407 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1408 | .put_super = xfs_fs_put_super, |
69961a26 | 1409 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1410 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1411 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1412 | .statfs = xfs_fs_statfs, |
1413 | .remount_fs = xfs_fs_remount, | |
1414 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1415 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1416 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1417 | }; |
1418 | ||
5085b607 | 1419 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1420 | .owner = THIS_MODULE, |
1421 | .name = "xfs", | |
152a0836 | 1422 | .mount = xfs_fs_mount, |
1da177e4 LT |
1423 | .kill_sb = kill_block_super, |
1424 | .fs_flags = FS_REQUIRES_DEV, | |
1425 | }; | |
1426 | ||
9f8868ff CH |
1427 | STATIC int __init |
1428 | xfs_init_zones(void) | |
1429 | { | |
9f8868ff CH |
1430 | |
1431 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1432 | if (!xfs_ioend_zone) | |
bf904248 | 1433 | goto out; |
9f8868ff CH |
1434 | |
1435 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1436 | xfs_ioend_zone); | |
1437 | if (!xfs_ioend_pool) | |
1438 | goto out_destroy_ioend_zone; | |
1439 | ||
1440 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1441 | "xfs_log_ticket"); | |
1442 | if (!xfs_log_ticket_zone) | |
1443 | goto out_destroy_ioend_pool; | |
1444 | ||
1445 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1446 | "xfs_bmap_free_item"); | |
1447 | if (!xfs_bmap_free_item_zone) | |
1448 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1449 | |
9f8868ff CH |
1450 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1451 | "xfs_btree_cur"); | |
1452 | if (!xfs_btree_cur_zone) | |
1453 | goto out_destroy_bmap_free_item_zone; | |
1454 | ||
1455 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1456 | "xfs_da_state"); | |
1457 | if (!xfs_da_state_zone) | |
1458 | goto out_destroy_btree_cur_zone; | |
1459 | ||
9f8868ff CH |
1460 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1461 | if (!xfs_ifork_zone) | |
1d9025e5 | 1462 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1463 | |
1464 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1465 | if (!xfs_trans_zone) | |
1466 | goto out_destroy_ifork_zone; | |
1467 | ||
e98c414f CH |
1468 | xfs_log_item_desc_zone = |
1469 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1470 | "xfs_log_item_desc"); | |
1471 | if (!xfs_log_item_desc_zone) | |
1472 | goto out_destroy_trans_zone; | |
1473 | ||
9f8868ff CH |
1474 | /* |
1475 | * The size of the zone allocated buf log item is the maximum | |
1476 | * size possible under XFS. This wastes a little bit of memory, | |
1477 | * but it is much faster. | |
1478 | */ | |
77c1a08f DC |
1479 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1480 | "xfs_buf_item"); | |
9f8868ff | 1481 | if (!xfs_buf_item_zone) |
e98c414f | 1482 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1483 | |
1484 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1485 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1486 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1487 | if (!xfs_efd_zone) | |
1488 | goto out_destroy_buf_item_zone; | |
1489 | ||
1490 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1491 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1492 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1493 | if (!xfs_efi_zone) | |
1494 | goto out_destroy_efd_zone; | |
1495 | ||
1496 | xfs_inode_zone = | |
1497 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1498 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1499 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1500 | if (!xfs_inode_zone) |
1501 | goto out_destroy_efi_zone; | |
1502 | ||
1503 | xfs_ili_zone = | |
1504 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1505 | KM_ZONE_SPREAD, NULL); | |
1506 | if (!xfs_ili_zone) | |
1507 | goto out_destroy_inode_zone; | |
1508 | ||
9f8868ff CH |
1509 | return 0; |
1510 | ||
9f8868ff CH |
1511 | out_destroy_inode_zone: |
1512 | kmem_zone_destroy(xfs_inode_zone); | |
1513 | out_destroy_efi_zone: | |
1514 | kmem_zone_destroy(xfs_efi_zone); | |
1515 | out_destroy_efd_zone: | |
1516 | kmem_zone_destroy(xfs_efd_zone); | |
1517 | out_destroy_buf_item_zone: | |
1518 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1519 | out_destroy_log_item_desc_zone: |
1520 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1521 | out_destroy_trans_zone: |
1522 | kmem_zone_destroy(xfs_trans_zone); | |
1523 | out_destroy_ifork_zone: | |
1524 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1525 | out_destroy_da_state_zone: |
1526 | kmem_zone_destroy(xfs_da_state_zone); | |
1527 | out_destroy_btree_cur_zone: | |
1528 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1529 | out_destroy_bmap_free_item_zone: | |
1530 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1531 | out_destroy_log_ticket_zone: | |
1532 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1533 | out_destroy_ioend_pool: | |
1534 | mempool_destroy(xfs_ioend_pool); | |
1535 | out_destroy_ioend_zone: | |
1536 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1537 | out: |
1538 | return -ENOMEM; | |
1539 | } | |
1540 | ||
1541 | STATIC void | |
1542 | xfs_destroy_zones(void) | |
1543 | { | |
9f8868ff CH |
1544 | kmem_zone_destroy(xfs_ili_zone); |
1545 | kmem_zone_destroy(xfs_inode_zone); | |
1546 | kmem_zone_destroy(xfs_efi_zone); | |
1547 | kmem_zone_destroy(xfs_efd_zone); | |
1548 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1549 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1550 | kmem_zone_destroy(xfs_trans_zone); |
1551 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1552 | kmem_zone_destroy(xfs_da_state_zone); |
1553 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1554 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1555 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1556 | mempool_destroy(xfs_ioend_pool); | |
1557 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1558 | |
1559 | } | |
1da177e4 | 1560 | |
0bf6a5bd DC |
1561 | STATIC int __init |
1562 | xfs_init_workqueues(void) | |
1563 | { | |
1564 | /* | |
40d344ec CH |
1565 | * We never want to the same work item to run twice, reclaiming inodes |
1566 | * or idling the log is not going to get any faster by multiple CPUs | |
1567 | * competing for ressources. Use the default large max_active value | |
1568 | * so that even lots of filesystems can perform these task in parallel. | |
0bf6a5bd | 1569 | */ |
40d344ec | 1570 | xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_NON_REENTRANT, 0); |
0bf6a5bd | 1571 | if (!xfs_syncd_wq) |
0030807c | 1572 | return -ENOMEM; |
c999a223 DC |
1573 | |
1574 | /* | |
1575 | * The allocation workqueue can be used in memory reclaim situations | |
1576 | * (writepage path), and parallelism is only limited by the number of | |
1577 | * AGs in all the filesystems mounted. Hence use the default large | |
1578 | * max_active value for this workqueue. | |
1579 | */ | |
1580 | xfs_alloc_wq = alloc_workqueue("xfsalloc", WQ_MEM_RECLAIM, 0); | |
1581 | if (!xfs_alloc_wq) | |
1582 | goto out_destroy_syncd; | |
1583 | ||
0bf6a5bd | 1584 | return 0; |
c999a223 DC |
1585 | |
1586 | out_destroy_syncd: | |
1587 | destroy_workqueue(xfs_syncd_wq); | |
1588 | return -ENOMEM; | |
0bf6a5bd DC |
1589 | } |
1590 | ||
39411f81 | 1591 | STATIC void |
0bf6a5bd DC |
1592 | xfs_destroy_workqueues(void) |
1593 | { | |
c999a223 | 1594 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1595 | destroy_workqueue(xfs_syncd_wq); |
1596 | } | |
1597 | ||
1da177e4 | 1598 | STATIC int __init |
9f8868ff | 1599 | init_xfs_fs(void) |
1da177e4 LT |
1600 | { |
1601 | int error; | |
1da177e4 | 1602 | |
65795910 CH |
1603 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1604 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1605 | |
9f8868ff | 1606 | xfs_dir_startup(); |
1da177e4 | 1607 | |
8758280f | 1608 | error = xfs_init_zones(); |
9f8868ff CH |
1609 | if (error) |
1610 | goto out; | |
1611 | ||
0bf6a5bd | 1612 | error = xfs_init_workqueues(); |
9f8868ff | 1613 | if (error) |
0b1b213f | 1614 | goto out_destroy_zones; |
9f8868ff | 1615 | |
0bf6a5bd DC |
1616 | error = xfs_mru_cache_init(); |
1617 | if (error) | |
1618 | goto out_destroy_wq; | |
1619 | ||
9f8868ff CH |
1620 | error = xfs_filestream_init(); |
1621 | if (error) | |
1622 | goto out_mru_cache_uninit; | |
1da177e4 | 1623 | |
ce8e922c | 1624 | error = xfs_buf_init(); |
9f8868ff CH |
1625 | if (error) |
1626 | goto out_filestream_uninit; | |
1627 | ||
1628 | error = xfs_init_procfs(); | |
1629 | if (error) | |
1630 | goto out_buf_terminate; | |
1631 | ||
1632 | error = xfs_sysctl_register(); | |
1633 | if (error) | |
1634 | goto out_cleanup_procfs; | |
1da177e4 | 1635 | |
a05931ce CH |
1636 | error = xfs_qm_init(); |
1637 | if (error) | |
1638 | goto out_sysctl_unregister; | |
1da177e4 LT |
1639 | |
1640 | error = register_filesystem(&xfs_fs_type); | |
1641 | if (error) | |
a05931ce | 1642 | goto out_qm_exit; |
1da177e4 LT |
1643 | return 0; |
1644 | ||
a05931ce CH |
1645 | out_qm_exit: |
1646 | xfs_qm_exit(); | |
9f8868ff CH |
1647 | out_sysctl_unregister: |
1648 | xfs_sysctl_unregister(); | |
1649 | out_cleanup_procfs: | |
1650 | xfs_cleanup_procfs(); | |
1651 | out_buf_terminate: | |
ce8e922c | 1652 | xfs_buf_terminate(); |
9f8868ff CH |
1653 | out_filestream_uninit: |
1654 | xfs_filestream_uninit(); | |
1655 | out_mru_cache_uninit: | |
1656 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1657 | out_destroy_wq: |
1658 | xfs_destroy_workqueues(); | |
9f8868ff | 1659 | out_destroy_zones: |
8758280f | 1660 | xfs_destroy_zones(); |
9f8868ff | 1661 | out: |
1da177e4 LT |
1662 | return error; |
1663 | } | |
1664 | ||
1665 | STATIC void __exit | |
9f8868ff | 1666 | exit_xfs_fs(void) |
1da177e4 | 1667 | { |
a05931ce | 1668 | xfs_qm_exit(); |
1da177e4 | 1669 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1670 | xfs_sysctl_unregister(); |
1671 | xfs_cleanup_procfs(); | |
ce8e922c | 1672 | xfs_buf_terminate(); |
9f8868ff CH |
1673 | xfs_filestream_uninit(); |
1674 | xfs_mru_cache_uninit(); | |
0bf6a5bd | 1675 | xfs_destroy_workqueues(); |
8758280f | 1676 | xfs_destroy_zones(); |
1da177e4 LT |
1677 | } |
1678 | ||
1679 | module_init(init_xfs_fs); | |
1680 | module_exit(exit_xfs_fs); | |
1681 | ||
1682 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1683 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1684 | MODULE_LICENSE("GPL"); |