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; | |
20ad9ea9 | 202 | mp->m_flags |= XFS_MOUNT_DELAYLOG; |
a67d7c5f | 203 | |
9d565ffa CH |
204 | /* |
205 | * These can be overridden by the mount option parsing. | |
206 | */ | |
207 | mp->m_logbufs = -1; | |
208 | mp->m_logbsize = -1; | |
a67d7c5f DC |
209 | |
210 | if (!options) | |
211 | goto done; | |
212 | ||
a67d7c5f DC |
213 | while ((this_char = strsep(&options, ",")) != NULL) { |
214 | if (!*this_char) | |
215 | continue; | |
216 | if ((value = strchr(this_char, '=')) != NULL) | |
217 | *value++ = 0; | |
218 | ||
219 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
220 | if (!value || !*value) { | |
4f10700a | 221 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
222 | this_char); |
223 | return EINVAL; | |
224 | } | |
9d565ffa | 225 | mp->m_logbufs = simple_strtoul(value, &eov, 10); |
a67d7c5f DC |
226 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
227 | if (!value || !*value) { | |
4f10700a | 228 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
229 | this_char); |
230 | return EINVAL; | |
231 | } | |
9d565ffa | 232 | mp->m_logbsize = suffix_strtoul(value, &eov, 10); |
a67d7c5f DC |
233 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
234 | if (!value || !*value) { | |
4f10700a | 235 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
236 | this_char); |
237 | return EINVAL; | |
238 | } | |
9d565ffa CH |
239 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
240 | if (!mp->m_logname) | |
241 | return ENOMEM; | |
a67d7c5f | 242 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 243 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe CH |
244 | this_char); |
245 | return EINVAL; | |
a67d7c5f DC |
246 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
247 | if (!value || !*value) { | |
4f10700a | 248 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
249 | this_char); |
250 | return EINVAL; | |
251 | } | |
9d565ffa CH |
252 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
253 | if (!mp->m_rtname) | |
254 | return ENOMEM; | |
a67d7c5f DC |
255 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
256 | if (!value || !*value) { | |
4f10700a | 257 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
258 | this_char); |
259 | return EINVAL; | |
260 | } | |
261 | iosize = simple_strtoul(value, &eov, 10); | |
1ec7944b | 262 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
263 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
264 | if (!value || !*value) { | |
4f10700a | 265 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
266 | this_char); |
267 | return EINVAL; | |
268 | } | |
269 | iosize = suffix_strtoul(value, &eov, 10); | |
9d565ffa | 270 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
271 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
272 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
273 | mp->m_flags |= XFS_MOUNT_GRPID; | |
274 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
275 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
276 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
277 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 278 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 279 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 280 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 281 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 282 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 283 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 284 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
285 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
286 | if (!value || !*value) { | |
4f10700a | 287 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
288 | this_char); |
289 | return EINVAL; | |
290 | } | |
291 | dsunit = simple_strtoul(value, &eov, 10); | |
292 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
293 | if (!value || !*value) { | |
4f10700a | 294 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f DC |
295 | this_char); |
296 | return EINVAL; | |
297 | } | |
298 | dswidth = simple_strtoul(value, &eov, 10); | |
299 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
9d565ffa | 300 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 301 | #if !XFS_BIG_INUMS |
4f10700a | 302 | xfs_warn(mp, "%s option not allowed on this system", |
a67d7c5f DC |
303 | this_char); |
304 | return EINVAL; | |
305 | #endif | |
306 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
9d565ffa | 307 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 308 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 309 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 310 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 311 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 312 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 313 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 314 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 315 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 316 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 317 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 318 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 319 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 320 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 321 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 322 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
323 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
324 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 325 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 326 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 327 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
9d565ffa CH |
328 | mp->m_qflags &= ~(XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
329 | XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | | |
469fc23d | 330 | XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
9d565ffa | 331 | XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD); |
a67d7c5f DC |
332 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
333 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
334 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
335 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
336 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
337 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
338 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
339 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
340 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
341 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
342 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa CH |
343 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
344 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 345 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa CH |
346 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
347 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
a67d7c5f DC |
348 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
349 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa CH |
350 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
351 | XFS_OQUOTA_ENFD); | |
a67d7c5f | 352 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa CH |
353 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
354 | mp->m_qflags &= ~XFS_OQUOTA_ENFD; | |
71e330b5 DC |
355 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
356 | mp->m_flags |= XFS_MOUNT_DELAYLOG; | |
71e330b5 DC |
357 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
358 | mp->m_flags &= ~XFS_MOUNT_DELAYLOG; | |
242d6219 CH |
359 | xfs_warn(mp, |
360 | "nodelaylog is deprecated and will be removed in Linux 3.3"); | |
e84661aa CH |
361 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
362 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
363 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
364 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 365 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
366 | xfs_warn(mp, |
367 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 368 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
369 | xfs_warn(mp, |
370 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 371 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
372 | xfs_warn(mp, |
373 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 374 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
375 | xfs_warn(mp, |
376 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 377 | } else { |
4f10700a | 378 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
a67d7c5f DC |
379 | return EINVAL; |
380 | } | |
381 | } | |
382 | ||
9d565ffa CH |
383 | /* |
384 | * no recovery flag requires a read-only mount | |
385 | */ | |
386 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
387 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 388 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
9d565ffa | 389 | return EINVAL; |
a67d7c5f DC |
390 | } |
391 | ||
9d565ffa | 392 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
393 | xfs_warn(mp, |
394 | "sunit and swidth options incompatible with the noalign option"); | |
a67d7c5f DC |
395 | return EINVAL; |
396 | } | |
397 | ||
e84661aa CH |
398 | if ((mp->m_flags & XFS_MOUNT_DISCARD) && |
399 | !(mp->m_flags & XFS_MOUNT_DELAYLOG)) { | |
400 | xfs_warn(mp, | |
401 | "the discard option is incompatible with the nodelaylog option"); | |
402 | return EINVAL; | |
403 | } | |
404 | ||
7d095257 CH |
405 | #ifndef CONFIG_XFS_QUOTA |
406 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 407 | xfs_warn(mp, "quota support not available in this kernel."); |
7d095257 CH |
408 | return EINVAL; |
409 | } | |
410 | #endif | |
411 | ||
9d565ffa CH |
412 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
413 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE))) { | |
4f10700a | 414 | xfs_warn(mp, "cannot mount with both project and group quota"); |
a67d7c5f DC |
415 | return EINVAL; |
416 | } | |
417 | ||
a67d7c5f | 418 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 419 | xfs_warn(mp, "sunit and swidth must be specified together"); |
a67d7c5f DC |
420 | return EINVAL; |
421 | } | |
422 | ||
423 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
424 | xfs_warn(mp, |
425 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f DC |
426 | dswidth, dsunit); |
427 | return EINVAL; | |
428 | } | |
429 | ||
9d565ffa CH |
430 | done: |
431 | if (!(mp->m_flags & XFS_MOUNT_NOALIGN)) { | |
432 | /* | |
433 | * At this point the superblock has not been read | |
434 | * in, therefore we do not know the block size. | |
435 | * Before the mount call ends we will convert | |
436 | * these to FSBs. | |
437 | */ | |
a67d7c5f | 438 | if (dsunit) { |
9d565ffa CH |
439 | mp->m_dalign = dsunit; |
440 | mp->m_flags |= XFS_MOUNT_RETERR; | |
a67d7c5f | 441 | } |
9d565ffa CH |
442 | |
443 | if (dswidth) | |
444 | mp->m_swidth = dswidth; | |
445 | } | |
446 | ||
447 | if (mp->m_logbufs != -1 && | |
448 | mp->m_logbufs != 0 && | |
449 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
450 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 451 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa CH |
452 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
453 | return XFS_ERROR(EINVAL); | |
454 | } | |
455 | if (mp->m_logbsize != -1 && | |
456 | mp->m_logbsize != 0 && | |
457 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
458 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
459 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
460 | xfs_warn(mp, |
461 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa CH |
462 | mp->m_logbsize); |
463 | return XFS_ERROR(EINVAL); | |
464 | } | |
465 | ||
9d565ffa CH |
466 | if (iosizelog) { |
467 | if (iosizelog > XFS_MAX_IO_LOG || | |
468 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 469 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
470 | iosizelog, XFS_MIN_IO_LOG, |
471 | XFS_MAX_IO_LOG); | |
472 | return XFS_ERROR(EINVAL); | |
473 | } | |
474 | ||
475 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
476 | mp->m_readio_log = iosizelog; | |
477 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
478 | } |
479 | ||
a67d7c5f DC |
480 | return 0; |
481 | } | |
482 | ||
483 | struct proc_xfs_info { | |
484 | int flag; | |
485 | char *str; | |
486 | }; | |
487 | ||
488 | STATIC int | |
489 | xfs_showargs( | |
490 | struct xfs_mount *mp, | |
491 | struct seq_file *m) | |
492 | { | |
493 | static struct proc_xfs_info xfs_info_set[] = { | |
494 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 495 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 496 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
497 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
498 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
499 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
500 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
501 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
502 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 503 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
71e330b5 | 504 | { XFS_MOUNT_DELAYLOG, "," MNTOPT_DELAYLOG }, |
e84661aa | 505 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
a67d7c5f DC |
506 | { 0, NULL } |
507 | }; | |
508 | static struct proc_xfs_info xfs_info_unset[] = { | |
509 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
510 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
511 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
512 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
513 | { 0, NULL } | |
514 | }; | |
515 | struct proc_xfs_info *xfs_infop; | |
516 | ||
517 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
518 | if (mp->m_flags & xfs_infop->flag) | |
519 | seq_puts(m, xfs_infop->str); | |
520 | } | |
521 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
522 | if (!(mp->m_flags & xfs_infop->flag)) | |
523 | seq_puts(m, xfs_infop->str); | |
524 | } | |
525 | ||
526 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
527 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
528 | (int)(1 << mp->m_writeio_log) >> 10); | |
529 | ||
530 | if (mp->m_logbufs > 0) | |
531 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
532 | if (mp->m_logbsize > 0) | |
533 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
534 | ||
535 | if (mp->m_logname) | |
536 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
537 | if (mp->m_rtname) | |
538 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
539 | ||
540 | if (mp->m_dalign > 0) | |
541 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
542 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
543 | if (mp->m_swidth > 0) | |
544 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
545 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
546 | ||
547 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
548 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
549 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
550 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
551 | ||
988abe40 AE |
552 | /* Either project or group quotas can be active, not both */ |
553 | ||
554 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { | |
555 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
556 | seq_puts(m, "," MNTOPT_PRJQUOTA); | |
557 | else | |
558 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
559 | } else if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
560 | if (mp->m_qflags & XFS_OQUOTA_ENFD) | |
561 | seq_puts(m, "," MNTOPT_GRPQUOTA); | |
562 | else | |
563 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
564 | } | |
a67d7c5f DC |
565 | |
566 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
567 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
568 | ||
569 | return 0; | |
570 | } | |
1da177e4 LT |
571 | __uint64_t |
572 | xfs_max_file_offset( | |
573 | unsigned int blockshift) | |
574 | { | |
575 | unsigned int pagefactor = 1; | |
576 | unsigned int bitshift = BITS_PER_LONG - 1; | |
577 | ||
578 | /* Figure out maximum filesize, on Linux this can depend on | |
579 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 580 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
581 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
582 | * So, for page sized blocks (4K on 32 bit platforms), | |
583 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
584 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
585 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
586 | * Note1: get_block_t takes a long (implicit cast from above) | |
587 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
588 | * can optionally convert the [unsigned] long from above into | |
589 | * an [unsigned] long long. | |
590 | */ | |
591 | ||
592 | #if BITS_PER_LONG == 32 | |
90c699a9 | 593 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
594 | ASSERT(sizeof(sector_t) == 8); |
595 | pagefactor = PAGE_CACHE_SIZE; | |
596 | bitshift = BITS_PER_LONG; | |
597 | # else | |
598 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
599 | # endif | |
600 | #endif | |
601 | ||
602 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
603 | } | |
604 | ||
3180e66d | 605 | STATIC int |
1da177e4 LT |
606 | xfs_blkdev_get( |
607 | xfs_mount_t *mp, | |
608 | const char *name, | |
609 | struct block_device **bdevp) | |
610 | { | |
611 | int error = 0; | |
612 | ||
d4d77629 TH |
613 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
614 | mp); | |
1da177e4 LT |
615 | if (IS_ERR(*bdevp)) { |
616 | error = PTR_ERR(*bdevp); | |
4f10700a | 617 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
618 | } |
619 | ||
620 | return -error; | |
621 | } | |
622 | ||
3180e66d | 623 | STATIC void |
1da177e4 LT |
624 | xfs_blkdev_put( |
625 | struct block_device *bdev) | |
626 | { | |
627 | if (bdev) | |
e525fd89 | 628 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
629 | } |
630 | ||
f538d4da CH |
631 | void |
632 | xfs_blkdev_issue_flush( | |
633 | xfs_buftarg_t *buftarg) | |
634 | { | |
dd3932ed | 635 | blkdev_issue_flush(buftarg->bt_bdev, GFP_KERNEL, NULL); |
f538d4da | 636 | } |
1da177e4 | 637 | |
19f354d4 CH |
638 | STATIC void |
639 | xfs_close_devices( | |
640 | struct xfs_mount *mp) | |
641 | { | |
642 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 643 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 644 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 645 | xfs_blkdev_put(logdev); |
19f354d4 CH |
646 | } |
647 | if (mp->m_rtdev_targp) { | |
c032bfcf | 648 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 649 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 650 | xfs_blkdev_put(rtdev); |
19f354d4 | 651 | } |
b7963133 | 652 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
653 | } |
654 | ||
655 | /* | |
656 | * The file system configurations are: | |
657 | * (1) device (partition) with data and internal log | |
658 | * (2) logical volume with data and log subvolumes. | |
659 | * (3) logical volume with data, log, and realtime subvolumes. | |
660 | * | |
661 | * We only have to handle opening the log and realtime volumes here if | |
662 | * they are present. The data subvolume has already been opened by | |
663 | * get_sb_bdev() and is stored in sb->s_bdev. | |
664 | */ | |
665 | STATIC int | |
666 | xfs_open_devices( | |
9d565ffa | 667 | struct xfs_mount *mp) |
19f354d4 CH |
668 | { |
669 | struct block_device *ddev = mp->m_super->s_bdev; | |
670 | struct block_device *logdev = NULL, *rtdev = NULL; | |
671 | int error; | |
672 | ||
673 | /* | |
674 | * Open real time and log devices - order is important. | |
675 | */ | |
9d565ffa CH |
676 | if (mp->m_logname) { |
677 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
678 | if (error) |
679 | goto out; | |
680 | } | |
681 | ||
9d565ffa CH |
682 | if (mp->m_rtname) { |
683 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
684 | if (error) |
685 | goto out_close_logdev; | |
686 | ||
687 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
688 | xfs_warn(mp, |
689 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
19f354d4 CH |
690 | error = EINVAL; |
691 | goto out_close_rtdev; | |
692 | } | |
693 | } | |
694 | ||
695 | /* | |
696 | * Setup xfs_mount buffer target pointers | |
697 | */ | |
698 | error = ENOMEM; | |
ebad861b | 699 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, 0, mp->m_fsname); |
19f354d4 CH |
700 | if (!mp->m_ddev_targp) |
701 | goto out_close_rtdev; | |
702 | ||
703 | if (rtdev) { | |
ebad861b DC |
704 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, 1, |
705 | mp->m_fsname); | |
19f354d4 CH |
706 | if (!mp->m_rtdev_targp) |
707 | goto out_free_ddev_targ; | |
708 | } | |
709 | ||
710 | if (logdev && logdev != ddev) { | |
ebad861b DC |
711 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, 1, |
712 | mp->m_fsname); | |
19f354d4 CH |
713 | if (!mp->m_logdev_targp) |
714 | goto out_free_rtdev_targ; | |
715 | } else { | |
716 | mp->m_logdev_targp = mp->m_ddev_targp; | |
717 | } | |
718 | ||
719 | return 0; | |
720 | ||
721 | out_free_rtdev_targ: | |
722 | if (mp->m_rtdev_targp) | |
b7963133 | 723 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 724 | out_free_ddev_targ: |
b7963133 | 725 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
726 | out_close_rtdev: |
727 | if (rtdev) | |
728 | xfs_blkdev_put(rtdev); | |
729 | out_close_logdev: | |
730 | if (logdev && logdev != ddev) | |
731 | xfs_blkdev_put(logdev); | |
732 | out: | |
733 | return error; | |
734 | } | |
735 | ||
e34b562c CH |
736 | /* |
737 | * Setup xfs_mount buffer target pointers based on superblock | |
738 | */ | |
739 | STATIC int | |
740 | xfs_setup_devices( | |
741 | struct xfs_mount *mp) | |
742 | { | |
743 | int error; | |
19f354d4 | 744 | |
e34b562c CH |
745 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, |
746 | mp->m_sb.sb_sectsize); | |
747 | if (error) | |
748 | return error; | |
749 | ||
750 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
751 | unsigned int log_sector_size = BBSIZE; | |
752 | ||
753 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
754 | log_sector_size = mp->m_sb.sb_logsectsize; | |
755 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
756 | mp->m_sb.sb_blocksize, | |
757 | log_sector_size); | |
758 | if (error) | |
759 | return error; | |
760 | } | |
761 | if (mp->m_rtdev_targp) { | |
762 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
763 | mp->m_sb.sb_blocksize, | |
764 | mp->m_sb.sb_sectsize); | |
765 | if (error) | |
766 | return error; | |
767 | } | |
768 | ||
769 | return 0; | |
770 | } | |
19f354d4 | 771 | |
bf904248 | 772 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 773 | STATIC struct inode * |
a50cd269 | 774 | xfs_fs_alloc_inode( |
1da177e4 LT |
775 | struct super_block *sb) |
776 | { | |
bf904248 | 777 | BUG(); |
493dca61 | 778 | return NULL; |
1da177e4 LT |
779 | } |
780 | ||
bf904248 | 781 | /* |
99fa8cb3 DC |
782 | * Now that the generic code is guaranteed not to be accessing |
783 | * the linux inode, we can reclaim the inode. | |
bf904248 | 784 | */ |
1da177e4 | 785 | STATIC void |
a50cd269 | 786 | xfs_fs_destroy_inode( |
848ce8f7 | 787 | struct inode *inode) |
1da177e4 | 788 | { |
848ce8f7 CH |
789 | struct xfs_inode *ip = XFS_I(inode); |
790 | ||
cca28fb8 | 791 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
792 | |
793 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 CH |
794 | |
795 | /* bad inode, get out here ASAP */ | |
796 | if (is_bad_inode(inode)) | |
797 | goto out_reclaim; | |
798 | ||
848ce8f7 CH |
799 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
800 | ||
801 | /* | |
802 | * We should never get here with one of the reclaim flags already set. | |
803 | */ | |
804 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
805 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
806 | ||
807 | /* | |
57817c68 DC |
808 | * We always use background reclaim here because even if the |
809 | * inode is clean, it still may be under IO and hence we have | |
810 | * to take the flush lock. The background reclaim path handles | |
811 | * this more efficiently than we can here, so simply let background | |
812 | * reclaim tear down all inodes. | |
848ce8f7 | 813 | */ |
848ce8f7 | 814 | out_reclaim: |
57817c68 | 815 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
816 | } |
817 | ||
07c8f675 DC |
818 | /* |
819 | * Slab object creation initialisation for the XFS inode. | |
820 | * This covers only the idempotent fields in the XFS inode; | |
821 | * all other fields need to be initialised on allocation | |
b595076a | 822 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
823 | * fields in the xfs inode that left in the initialise state |
824 | * when freeing the inode. | |
825 | */ | |
bf904248 DC |
826 | STATIC void |
827 | xfs_fs_inode_init_once( | |
07c8f675 DC |
828 | void *inode) |
829 | { | |
830 | struct xfs_inode *ip = inode; | |
831 | ||
832 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
833 | |
834 | /* vfs inode */ | |
835 | inode_init_once(VFS_I(ip)); | |
836 | ||
837 | /* xfs inode */ | |
07c8f675 DC |
838 | atomic_set(&ip->i_pincount, 0); |
839 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
840 | init_waitqueue_head(&ip->i_ipin_wait); |
841 | /* | |
842 | * Because we want to use a counting completion, complete | |
843 | * the flush completion once to allow a single access to | |
844 | * the flush completion without blocking. | |
845 | */ | |
846 | init_completion(&ip->i_flush); | |
847 | complete(&ip->i_flush); | |
848 | ||
849 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
850 | "xfsino", ip->i_ino); | |
07c8f675 DC |
851 | } |
852 | ||
f9581b14 CH |
853 | /* |
854 | * Dirty the XFS inode when mark_inode_dirty_sync() is called so that | |
dcd79a14 | 855 | * we catch unlogged VFS level updates to the inode. |
f9581b14 CH |
856 | * |
857 | * We need the barrier() to maintain correct ordering between unlogged | |
858 | * updates and the transaction commit code that clears the i_update_core | |
859 | * field. This requires all updates to be completed before marking the | |
860 | * inode dirty. | |
861 | */ | |
862 | STATIC void | |
863 | xfs_fs_dirty_inode( | |
aa385729 CH |
864 | struct inode *inode, |
865 | int flags) | |
f9581b14 CH |
866 | { |
867 | barrier(); | |
868 | XFS_I(inode)->i_update_core = 1; | |
869 | } | |
870 | ||
1da177e4 | 871 | STATIC int |
a50cd269 | 872 | xfs_fs_write_inode( |
1da177e4 | 873 | struct inode *inode, |
a9185b41 | 874 | struct writeback_control *wbc) |
1da177e4 | 875 | { |
2e656092 | 876 | struct xfs_inode *ip = XFS_I(inode); |
d4bb6d06 | 877 | struct xfs_mount *mp = ip->i_mount; |
07fec736 | 878 | int error = EAGAIN; |
1da177e4 | 879 | |
cca28fb8 | 880 | trace_xfs_write_inode(ip); |
d4bb6d06 CH |
881 | |
882 | if (XFS_FORCED_SHUTDOWN(mp)) | |
58d84c4e | 883 | return -XFS_ERROR(EIO); |
d4bb6d06 | 884 | |
0b8fd303 | 885 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->for_kupdate) { |
07fec736 | 886 | /* |
7a36c8a9 CH |
887 | * Make sure the inode has made it it into the log. Instead |
888 | * of forcing it all the way to stable storage using a | |
889 | * synchronous transaction we let the log force inside the | |
890 | * ->sync_fs call do that for thus, which reduces the number | |
4a06fd26 | 891 | * of synchronous log forces dramatically. |
07fec736 | 892 | */ |
be4f1ac8 | 893 | error = xfs_log_dirty_inode(ip, NULL, 0); |
58d84c4e CH |
894 | if (error) |
895 | goto out; | |
896 | return 0; | |
d4bb6d06 | 897 | } else { |
be4f1ac8 CH |
898 | if (!ip->i_update_core) |
899 | return 0; | |
900 | ||
07fec736 CH |
901 | /* |
902 | * We make this non-blocking if the inode is contended, return | |
903 | * EAGAIN to indicate to the caller that they did not succeed. | |
904 | * This prevents the flush path from blocking on inodes inside | |
7a36c8a9 CH |
905 | * another operation right now, they get caught later by |
906 | * xfs_sync. | |
07fec736 | 907 | */ |
d4bb6d06 CH |
908 | if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) |
909 | goto out; | |
07fec736 | 910 | |
7a36c8a9 CH |
911 | if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) |
912 | goto out_unlock; | |
d4bb6d06 | 913 | |
7a36c8a9 CH |
914 | /* |
915 | * Now we have the flush lock and the inode is not pinned, we | |
916 | * can check if the inode is really clean as we know that | |
917 | * there are no pending transaction completions, it is not | |
918 | * waiting on the delayed write queue and there is no IO in | |
919 | * progress. | |
920 | */ | |
921 | if (xfs_inode_clean(ip)) { | |
922 | xfs_ifunlock(ip); | |
923 | error = 0; | |
924 | goto out_unlock; | |
925 | } | |
1bfd8d04 | 926 | error = xfs_iflush(ip, SYNC_TRYLOCK); |
d4bb6d06 CH |
927 | } |
928 | ||
929 | out_unlock: | |
930 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
931 | out: | |
e893bffd LM |
932 | /* |
933 | * if we failed to write out the inode then mark | |
934 | * it dirty again so we'll try again later. | |
935 | */ | |
936 | if (error) | |
2e656092 | 937 | xfs_mark_inode_dirty_sync(ip); |
1da177e4 LT |
938 | return -error; |
939 | } | |
940 | ||
941 | STATIC void | |
b57922d9 | 942 | xfs_fs_evict_inode( |
1da177e4 LT |
943 | struct inode *inode) |
944 | { | |
1543d79c | 945 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 946 | |
b57922d9 | 947 | trace_xfs_evict_inode(ip); |
cca28fb8 | 948 | |
b57922d9 AV |
949 | truncate_inode_pages(&inode->i_data, 0); |
950 | end_writeback(inode); | |
99fa8cb3 DC |
951 | XFS_STATS_INC(vn_rele); |
952 | XFS_STATS_INC(vn_remove); | |
953 | XFS_STATS_DEC(vn_active); | |
954 | ||
033da48f CH |
955 | /* |
956 | * The iolock is used by the file system to coordinate reads, | |
957 | * writes, and block truncates. Up to this point the lock | |
958 | * protected concurrent accesses by users of the inode. But | |
959 | * from here forward we're doing some final processing of the | |
960 | * inode because we're done with it, and although we reuse the | |
961 | * iolock for protection it is really a distinct lock class | |
962 | * (in the lockdep sense) from before. To keep lockdep happy | |
963 | * (and basically indicate what we are doing), we explicitly | |
964 | * re-init the iolock here. | |
965 | */ | |
966 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); | |
967 | mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); | |
dcfcf205 DC |
968 | lockdep_set_class_and_name(&ip->i_iolock.mr_lock, |
969 | &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); | |
033da48f | 970 | |
99fa8cb3 | 971 | xfs_inactive(ip); |
56d433e4 | 972 | } |
1da177e4 | 973 | |
a738159d CH |
974 | STATIC void |
975 | xfs_free_fsname( | |
976 | struct xfs_mount *mp) | |
977 | { | |
978 | kfree(mp->m_fsname); | |
979 | kfree(mp->m_rtname); | |
980 | kfree(mp->m_logname); | |
981 | } | |
982 | ||
1da177e4 | 983 | STATIC void |
a50cd269 | 984 | xfs_fs_put_super( |
1da177e4 LT |
985 | struct super_block *sb) |
986 | { | |
745f6919 | 987 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 988 | |
a167b17e | 989 | xfs_syncd_stop(mp); |
075fe102 | 990 | |
e48ad316 CH |
991 | /* |
992 | * Blow away any referenced inode in the filestreams cache. | |
993 | * This can and will cause log traffic as inodes go inactive | |
994 | * here. | |
995 | */ | |
996 | xfs_filestream_unmount(mp); | |
997 | ||
a9add83e | 998 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
e48ad316 | 999 | |
19f354d4 | 1000 | xfs_unmountfs(mp); |
6203300e | 1001 | xfs_freesb(mp); |
c962fb79 | 1002 | xfs_icsb_destroy_counters(mp); |
19f354d4 | 1003 | xfs_close_devices(mp); |
a738159d | 1004 | xfs_free_fsname(mp); |
c962fb79 | 1005 | kfree(mp); |
1da177e4 LT |
1006 | } |
1007 | ||
1da177e4 | 1008 | STATIC int |
69961a26 | 1009 | xfs_fs_sync_fs( |
1da177e4 LT |
1010 | struct super_block *sb, |
1011 | int wait) | |
1012 | { | |
745f6919 | 1013 | struct xfs_mount *mp = XFS_M(sb); |
b83bd138 | 1014 | int error; |
1da177e4 | 1015 | |
e893bffd | 1016 | /* |
69961a26 CH |
1017 | * Not much we can do for the first async pass. Writing out the |
1018 | * superblock would be counter-productive as we are going to redirty | |
1019 | * when writing out other data and metadata (and writing out a single | |
1020 | * block is quite fast anyway). | |
1021 | * | |
1022 | * Try to asynchronously kick off quota syncing at least. | |
e893bffd | 1023 | */ |
69961a26 CH |
1024 | if (!wait) { |
1025 | xfs_qm_sync(mp, SYNC_TRYLOCK); | |
1026 | return 0; | |
1027 | } | |
1028 | ||
1029 | error = xfs_quiesce_data(mp); | |
1030 | if (error) | |
1031 | return -error; | |
1da177e4 | 1032 | |
69961a26 | 1033 | if (laptop_mode) { |
1da177e4 LT |
1034 | /* |
1035 | * The disk must be active because we're syncing. | |
1036 | * We schedule xfssyncd now (now that the disk is | |
1037 | * active) instead of later (when it might not be). | |
1038 | */ | |
c6d09b66 | 1039 | flush_delayed_work_sync(&mp->m_sync_work); |
1da177e4 LT |
1040 | } |
1041 | ||
69961a26 | 1042 | return 0; |
1da177e4 LT |
1043 | } |
1044 | ||
1045 | STATIC int | |
a50cd269 | 1046 | xfs_fs_statfs( |
726c3342 | 1047 | struct dentry *dentry, |
1da177e4 LT |
1048 | struct kstatfs *statp) |
1049 | { | |
4ca488eb CH |
1050 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1051 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1052 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1053 | __uint64_t fakeinos, id; |
1054 | xfs_extlen_t lsize; | |
2fe33661 | 1055 | __int64_t ffree; |
4ca488eb CH |
1056 | |
1057 | statp->f_type = XFS_SB_MAGIC; | |
1058 | statp->f_namelen = MAXNAMELEN - 1; | |
1059 | ||
1060 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1061 | statp->f_fsid.val[0] = (u32)id; | |
1062 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1063 | ||
d4d90b57 | 1064 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1065 | |
1066 | spin_lock(&mp->m_sb_lock); | |
1067 | statp->f_bsize = sbp->sb_blocksize; | |
1068 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1069 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1070 | statp->f_bfree = statp->f_bavail = | |
1071 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1072 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1073 | statp->f_files = |
1074 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1075 | if (mp->m_maxicount) | |
a19d9f88 CH |
1076 | statp->f_files = min_t(typeof(statp->f_files), |
1077 | statp->f_files, | |
1078 | mp->m_maxicount); | |
2fe33661 SB |
1079 | |
1080 | /* make sure statp->f_ffree does not underflow */ | |
1081 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1082 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1083 | ||
4ca488eb CH |
1084 | spin_unlock(&mp->m_sb_lock); |
1085 | ||
7d095257 CH |
1086 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) || |
1087 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD))) == | |
1088 | (XFS_PQUOTA_ACCT|XFS_OQUOTA_ENFD)) | |
1089 | xfs_qm_statvfs(ip, statp); | |
4ca488eb | 1090 | return 0; |
1da177e4 LT |
1091 | } |
1092 | ||
d5db0f97 ES |
1093 | STATIC void |
1094 | xfs_save_resvblks(struct xfs_mount *mp) | |
1095 | { | |
1096 | __uint64_t resblks = 0; | |
1097 | ||
1098 | mp->m_resblks_save = mp->m_resblks; | |
1099 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1100 | } | |
1101 | ||
1102 | STATIC void | |
1103 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1104 | { | |
1105 | __uint64_t resblks; | |
1106 | ||
1107 | if (mp->m_resblks_save) { | |
1108 | resblks = mp->m_resblks_save; | |
1109 | mp->m_resblks_save = 0; | |
1110 | } else | |
1111 | resblks = xfs_default_resblks(mp); | |
1112 | ||
1113 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1114 | } | |
1115 | ||
1da177e4 | 1116 | STATIC int |
a50cd269 | 1117 | xfs_fs_remount( |
1da177e4 LT |
1118 | struct super_block *sb, |
1119 | int *flags, | |
1120 | char *options) | |
1121 | { | |
745f6919 | 1122 | struct xfs_mount *mp = XFS_M(sb); |
62a877e3 CH |
1123 | substring_t args[MAX_OPT_ARGS]; |
1124 | char *p; | |
7884bc86 | 1125 | int error; |
1da177e4 | 1126 | |
62a877e3 CH |
1127 | while ((p = strsep(&options, ",")) != NULL) { |
1128 | int token; | |
bdd907ba | 1129 | |
62a877e3 CH |
1130 | if (!*p) |
1131 | continue; | |
48b62a1a | 1132 | |
62a877e3 CH |
1133 | token = match_token(p, tokens, args); |
1134 | switch (token) { | |
1135 | case Opt_barrier: | |
48b62a1a | 1136 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1137 | break; |
1138 | case Opt_nobarrier: | |
48b62a1a | 1139 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 CH |
1140 | break; |
1141 | default: | |
6efdf281 CH |
1142 | /* |
1143 | * Logically we would return an error here to prevent | |
1144 | * users from believing they might have changed | |
1145 | * mount options using remount which can't be changed. | |
1146 | * | |
1147 | * But unfortunately mount(8) adds all options from | |
1148 | * mtab and fstab to the mount arguments in some cases | |
1149 | * so we can't blindly reject options, but have to | |
1150 | * check for each specified option if it actually | |
1151 | * differs from the currently set option and only | |
1152 | * reject it if that's the case. | |
1153 | * | |
1154 | * Until that is implemented we return success for | |
1155 | * every remount request, and silently ignore all | |
1156 | * options that we can't actually change. | |
1157 | */ | |
1158 | #if 0 | |
4f10700a DC |
1159 | xfs_info(mp, |
1160 | "mount option \"%s\" not supported for remount\n", p); | |
62a877e3 | 1161 | return -EINVAL; |
6efdf281 | 1162 | #else |
6c5e51da | 1163 | break; |
6efdf281 | 1164 | #endif |
48b62a1a | 1165 | } |
62a877e3 CH |
1166 | } |
1167 | ||
7884bc86 | 1168 | /* ro -> rw */ |
62a877e3 CH |
1169 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1170 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1171 | |
1172 | /* | |
1173 | * If this is the first remount to writeable state we | |
1174 | * might have some superblock changes to update. | |
1175 | */ | |
1176 | if (mp->m_update_flags) { | |
1177 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1178 | if (error) { | |
4f10700a | 1179 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1180 | return error; |
1181 | } | |
1182 | mp->m_update_flags = 0; | |
1183 | } | |
cbe132a8 DC |
1184 | |
1185 | /* | |
1186 | * Fill out the reserve pool if it is empty. Use the stashed | |
1187 | * value if it is non-zero, otherwise go with the default. | |
1188 | */ | |
d5db0f97 | 1189 | xfs_restore_resvblks(mp); |
62a877e3 CH |
1190 | } |
1191 | ||
1192 | /* rw -> ro */ | |
1193 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 DC |
1194 | /* |
1195 | * After we have synced the data but before we sync the | |
1196 | * metadata, we need to free up the reserve block pool so that | |
1197 | * the used block count in the superblock on disk is correct at | |
1198 | * the end of the remount. Stash the current reserve pool size | |
1199 | * so that if we get remounted rw, we can return it to the same | |
1200 | * size. | |
1201 | */ | |
cbe132a8 | 1202 | |
e9f1c6ee | 1203 | xfs_quiesce_data(mp); |
d5db0f97 | 1204 | xfs_save_resvblks(mp); |
76bf105c | 1205 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1206 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1207 | } | |
1208 | ||
62a877e3 | 1209 | return 0; |
1da177e4 LT |
1210 | } |
1211 | ||
9909c4aa CH |
1212 | /* |
1213 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1214 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1215 | * record to dirty the log in case of a crash while frozen. |
1216 | */ | |
c4be0c1d TS |
1217 | STATIC int |
1218 | xfs_fs_freeze( | |
1da177e4 LT |
1219 | struct super_block *sb) |
1220 | { | |
9909c4aa CH |
1221 | struct xfs_mount *mp = XFS_M(sb); |
1222 | ||
d5db0f97 | 1223 | xfs_save_resvblks(mp); |
76bf105c | 1224 | xfs_quiesce_attr(mp); |
c58efdb4 | 1225 | return -xfs_fs_log_dummy(mp); |
1da177e4 LT |
1226 | } |
1227 | ||
d5db0f97 ES |
1228 | STATIC int |
1229 | xfs_fs_unfreeze( | |
1230 | struct super_block *sb) | |
1231 | { | |
1232 | struct xfs_mount *mp = XFS_M(sb); | |
1233 | ||
1234 | xfs_restore_resvblks(mp); | |
1235 | return 0; | |
1236 | } | |
1237 | ||
1da177e4 | 1238 | STATIC int |
a50cd269 | 1239 | xfs_fs_show_options( |
1da177e4 LT |
1240 | struct seq_file *m, |
1241 | struct vfsmount *mnt) | |
1242 | { | |
745f6919 | 1243 | return -xfs_showargs(XFS_M(mnt->mnt_sb), m); |
1da177e4 LT |
1244 | } |
1245 | ||
f8f15e42 CH |
1246 | /* |
1247 | * This function fills in xfs_mount_t fields based on mount args. | |
1248 | * Note: the superblock _has_ now been read in. | |
1249 | */ | |
1250 | STATIC int | |
1251 | xfs_finish_flags( | |
f8f15e42 CH |
1252 | struct xfs_mount *mp) |
1253 | { | |
1254 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1255 | ||
025dfdaf | 1256 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1257 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1258 | if (mp->m_logbsize <= 0 && |
1259 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1260 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1261 | } else if (mp->m_logbsize > 0 && |
1262 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1263 | xfs_warn(mp, |
1264 | "logbuf size must be greater than or equal to log stripe size"); | |
f8f15e42 CH |
1265 | return XFS_ERROR(EINVAL); |
1266 | } | |
1267 | } else { | |
1268 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1269 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1270 | xfs_warn(mp, |
1271 | "logbuf size for version 1 logs must be 16K or 32K"); | |
f8f15e42 CH |
1272 | return XFS_ERROR(EINVAL); |
1273 | } | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1278 | * told by noattr2 to turn it off | |
1279 | */ | |
1280 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1281 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1282 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1283 | ||
1284 | /* | |
1285 | * prohibit r/w mounts of read-only filesystems | |
1286 | */ | |
1287 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1288 | xfs_warn(mp, |
1289 | "cannot mount a read-only filesystem as read-write"); | |
f8f15e42 CH |
1290 | return XFS_ERROR(EROFS); |
1291 | } | |
1292 | ||
f8f15e42 CH |
1293 | return 0; |
1294 | } | |
1295 | ||
1da177e4 | 1296 | STATIC int |
a50cd269 | 1297 | xfs_fs_fill_super( |
1da177e4 LT |
1298 | struct super_block *sb, |
1299 | void *data, | |
1300 | int silent) | |
1301 | { | |
f3dcc13f | 1302 | struct inode *root; |
745f6919 | 1303 | struct xfs_mount *mp = NULL; |
c962fb79 | 1304 | int flags = 0, error = ENOMEM; |
bdd907ba | 1305 | |
c962fb79 CH |
1306 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1307 | if (!mp) | |
9d565ffa | 1308 | goto out; |
1da177e4 | 1309 | |
c962fb79 | 1310 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1311 | mutex_init(&mp->m_growlock); |
1312 | atomic_set(&mp->m_active_trans, 0); | |
74394496 | 1313 | |
b267ce99 CH |
1314 | mp->m_super = sb; |
1315 | sb->s_fs_info = mp; | |
1da177e4 | 1316 | |
288699fe | 1317 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1318 | if (error) |
9d565ffa | 1319 | goto out_free_fsname; |
1da177e4 LT |
1320 | |
1321 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1322 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1323 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1324 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1325 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1326 | #endif |
a50cd269 | 1327 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1328 | |
9d565ffa | 1329 | if (silent) |
f8f15e42 CH |
1330 | flags |= XFS_MFSI_QUIET; |
1331 | ||
9d565ffa | 1332 | error = xfs_open_devices(mp); |
19f354d4 | 1333 | if (error) |
288699fe | 1334 | goto out_free_fsname; |
f8f15e42 | 1335 | |
61ba35de CH |
1336 | error = xfs_icsb_init_counters(mp); |
1337 | if (error) | |
1338 | goto out_close_devices; | |
c962fb79 | 1339 | |
f8f15e42 CH |
1340 | error = xfs_readsb(mp, flags); |
1341 | if (error) | |
9d565ffa CH |
1342 | goto out_destroy_counters; |
1343 | ||
1344 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1345 | if (error) |
effa2eda | 1346 | goto out_free_sb; |
f8f15e42 | 1347 | |
e34b562c | 1348 | error = xfs_setup_devices(mp); |
19f354d4 | 1349 | if (error) |
effa2eda | 1350 | goto out_free_sb; |
f8f15e42 | 1351 | |
f8f15e42 CH |
1352 | error = xfs_filestream_mount(mp); |
1353 | if (error) | |
effa2eda | 1354 | goto out_free_sb; |
f8f15e42 | 1355 | |
704b2907 DC |
1356 | /* |
1357 | * we must configure the block size in the superblock before we run the | |
1358 | * full mount process as the mount process can lookup and cache inodes. | |
1359 | * For the same reason we must also initialise the syncd and register | |
1360 | * the inode cache shrinker so that inodes can be reclaimed during | |
1361 | * operations like a quotacheck that iterate all inodes in the | |
1362 | * filesystem. | |
1363 | */ | |
4ca488eb CH |
1364 | sb->s_magic = XFS_SB_MAGIC; |
1365 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1366 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 LT |
1367 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
1368 | sb->s_time_gran = 1; | |
1369 | set_posix_acl_flag(sb); | |
1370 | ||
704b2907 DC |
1371 | error = xfs_mountfs(mp); |
1372 | if (error) | |
2bcf6e97 CH |
1373 | goto out_filestream_unmount; |
1374 | ||
1375 | error = xfs_syncd_init(mp); | |
1376 | if (error) | |
1377 | goto out_unmount; | |
704b2907 | 1378 | |
01651646 | 1379 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1380 | if (!root) { |
cbc89dcf | 1381 | error = ENOENT; |
2bcf6e97 | 1382 | goto out_syncd_stop; |
cbc89dcf | 1383 | } |
f3dcc13f CH |
1384 | if (is_bad_inode(root)) { |
1385 | error = EINVAL; | |
2bcf6e97 | 1386 | goto out_syncd_stop; |
1da177e4 | 1387 | } |
f3dcc13f CH |
1388 | sb->s_root = d_alloc_root(root); |
1389 | if (!sb->s_root) { | |
1390 | error = ENOMEM; | |
2bcf6e97 | 1391 | goto out_iput; |
1da177e4 | 1392 | } |
74394496 | 1393 | |
1da177e4 LT |
1394 | return 0; |
1395 | ||
120226c1 CH |
1396 | out_filestream_unmount: |
1397 | xfs_filestream_unmount(mp); | |
effa2eda CH |
1398 | out_free_sb: |
1399 | xfs_freesb(mp); | |
9d565ffa | 1400 | out_destroy_counters: |
c962fb79 | 1401 | xfs_icsb_destroy_counters(mp); |
61ba35de | 1402 | out_close_devices: |
19f354d4 | 1403 | xfs_close_devices(mp); |
9d565ffa CH |
1404 | out_free_fsname: |
1405 | xfs_free_fsname(mp); | |
c962fb79 | 1406 | kfree(mp); |
9d565ffa | 1407 | out: |
c962fb79 | 1408 | return -error; |
f8f15e42 | 1409 | |
2bcf6e97 CH |
1410 | out_iput: |
1411 | iput(root); | |
1412 | out_syncd_stop: | |
704b2907 | 1413 | xfs_syncd_stop(mp); |
2bcf6e97 | 1414 | out_unmount: |
e48ad316 CH |
1415 | /* |
1416 | * Blow away any referenced inode in the filestreams cache. | |
1417 | * This can and will cause log traffic as inodes go inactive | |
1418 | * here. | |
1419 | */ | |
1420 | xfs_filestream_unmount(mp); | |
1421 | ||
a9add83e | 1422 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
e48ad316 | 1423 | |
19f354d4 | 1424 | xfs_unmountfs(mp); |
6203300e | 1425 | goto out_free_sb; |
1da177e4 LT |
1426 | } |
1427 | ||
152a0836 AV |
1428 | STATIC struct dentry * |
1429 | xfs_fs_mount( | |
1da177e4 LT |
1430 | struct file_system_type *fs_type, |
1431 | int flags, | |
1432 | const char *dev_name, | |
152a0836 | 1433 | void *data) |
1da177e4 | 1434 | { |
152a0836 | 1435 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1436 | } |
1437 | ||
8daaa831 DC |
1438 | static int |
1439 | xfs_fs_nr_cached_objects( | |
1440 | struct super_block *sb) | |
1441 | { | |
1442 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1443 | } | |
1444 | ||
1445 | static void | |
1446 | xfs_fs_free_cached_objects( | |
1447 | struct super_block *sb, | |
1448 | int nr_to_scan) | |
1449 | { | |
1450 | xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); | |
1451 | } | |
1452 | ||
b87221de | 1453 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1454 | .alloc_inode = xfs_fs_alloc_inode, |
1455 | .destroy_inode = xfs_fs_destroy_inode, | |
f9581b14 | 1456 | .dirty_inode = xfs_fs_dirty_inode, |
a50cd269 | 1457 | .write_inode = xfs_fs_write_inode, |
b57922d9 | 1458 | .evict_inode = xfs_fs_evict_inode, |
a50cd269 | 1459 | .put_super = xfs_fs_put_super, |
69961a26 | 1460 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1461 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1462 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1463 | .statfs = xfs_fs_statfs, |
1464 | .remount_fs = xfs_fs_remount, | |
1465 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1466 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1467 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1468 | }; |
1469 | ||
5085b607 | 1470 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1471 | .owner = THIS_MODULE, |
1472 | .name = "xfs", | |
152a0836 | 1473 | .mount = xfs_fs_mount, |
1da177e4 LT |
1474 | .kill_sb = kill_block_super, |
1475 | .fs_flags = FS_REQUIRES_DEV, | |
1476 | }; | |
1477 | ||
9f8868ff CH |
1478 | STATIC int __init |
1479 | xfs_init_zones(void) | |
1480 | { | |
9f8868ff CH |
1481 | |
1482 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1483 | if (!xfs_ioend_zone) | |
bf904248 | 1484 | goto out; |
9f8868ff CH |
1485 | |
1486 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1487 | xfs_ioend_zone); | |
1488 | if (!xfs_ioend_pool) | |
1489 | goto out_destroy_ioend_zone; | |
1490 | ||
1491 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1492 | "xfs_log_ticket"); | |
1493 | if (!xfs_log_ticket_zone) | |
1494 | goto out_destroy_ioend_pool; | |
1495 | ||
1496 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1497 | "xfs_bmap_free_item"); | |
1498 | if (!xfs_bmap_free_item_zone) | |
1499 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1500 | |
9f8868ff CH |
1501 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1502 | "xfs_btree_cur"); | |
1503 | if (!xfs_btree_cur_zone) | |
1504 | goto out_destroy_bmap_free_item_zone; | |
1505 | ||
1506 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1507 | "xfs_da_state"); | |
1508 | if (!xfs_da_state_zone) | |
1509 | goto out_destroy_btree_cur_zone; | |
1510 | ||
1511 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
1512 | if (!xfs_dabuf_zone) | |
1513 | goto out_destroy_da_state_zone; | |
1514 | ||
1515 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
1516 | if (!xfs_ifork_zone) | |
1517 | goto out_destroy_dabuf_zone; | |
1518 | ||
1519 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1520 | if (!xfs_trans_zone) | |
1521 | goto out_destroy_ifork_zone; | |
1522 | ||
e98c414f CH |
1523 | xfs_log_item_desc_zone = |
1524 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1525 | "xfs_log_item_desc"); | |
1526 | if (!xfs_log_item_desc_zone) | |
1527 | goto out_destroy_trans_zone; | |
1528 | ||
9f8868ff CH |
1529 | /* |
1530 | * The size of the zone allocated buf log item is the maximum | |
1531 | * size possible under XFS. This wastes a little bit of memory, | |
1532 | * but it is much faster. | |
1533 | */ | |
1534 | xfs_buf_item_zone = kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
c1155410 | 1535 | (((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / |
9f8868ff CH |
1536 | NBWORD) * sizeof(int))), "xfs_buf_item"); |
1537 | if (!xfs_buf_item_zone) | |
e98c414f | 1538 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1539 | |
1540 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1541 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1542 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1543 | if (!xfs_efd_zone) | |
1544 | goto out_destroy_buf_item_zone; | |
1545 | ||
1546 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1547 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1548 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1549 | if (!xfs_efi_zone) | |
1550 | goto out_destroy_efd_zone; | |
1551 | ||
1552 | xfs_inode_zone = | |
1553 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1554 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1555 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1556 | if (!xfs_inode_zone) |
1557 | goto out_destroy_efi_zone; | |
1558 | ||
1559 | xfs_ili_zone = | |
1560 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1561 | KM_ZONE_SPREAD, NULL); | |
1562 | if (!xfs_ili_zone) | |
1563 | goto out_destroy_inode_zone; | |
1564 | ||
9f8868ff CH |
1565 | return 0; |
1566 | ||
9f8868ff CH |
1567 | out_destroy_inode_zone: |
1568 | kmem_zone_destroy(xfs_inode_zone); | |
1569 | out_destroy_efi_zone: | |
1570 | kmem_zone_destroy(xfs_efi_zone); | |
1571 | out_destroy_efd_zone: | |
1572 | kmem_zone_destroy(xfs_efd_zone); | |
1573 | out_destroy_buf_item_zone: | |
1574 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1575 | out_destroy_log_item_desc_zone: |
1576 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1577 | out_destroy_trans_zone: |
1578 | kmem_zone_destroy(xfs_trans_zone); | |
1579 | out_destroy_ifork_zone: | |
1580 | kmem_zone_destroy(xfs_ifork_zone); | |
1581 | out_destroy_dabuf_zone: | |
1582 | kmem_zone_destroy(xfs_dabuf_zone); | |
1583 | out_destroy_da_state_zone: | |
1584 | kmem_zone_destroy(xfs_da_state_zone); | |
1585 | out_destroy_btree_cur_zone: | |
1586 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1587 | out_destroy_bmap_free_item_zone: | |
1588 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1589 | out_destroy_log_ticket_zone: | |
1590 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1591 | out_destroy_ioend_pool: | |
1592 | mempool_destroy(xfs_ioend_pool); | |
1593 | out_destroy_ioend_zone: | |
1594 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1595 | out: |
1596 | return -ENOMEM; | |
1597 | } | |
1598 | ||
1599 | STATIC void | |
1600 | xfs_destroy_zones(void) | |
1601 | { | |
9f8868ff CH |
1602 | kmem_zone_destroy(xfs_ili_zone); |
1603 | kmem_zone_destroy(xfs_inode_zone); | |
1604 | kmem_zone_destroy(xfs_efi_zone); | |
1605 | kmem_zone_destroy(xfs_efd_zone); | |
1606 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1607 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1608 | kmem_zone_destroy(xfs_trans_zone); |
1609 | kmem_zone_destroy(xfs_ifork_zone); | |
1610 | kmem_zone_destroy(xfs_dabuf_zone); | |
1611 | kmem_zone_destroy(xfs_da_state_zone); | |
1612 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1613 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1614 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1615 | mempool_destroy(xfs_ioend_pool); | |
1616 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1617 | |
1618 | } | |
1da177e4 | 1619 | |
0bf6a5bd DC |
1620 | STATIC int __init |
1621 | xfs_init_workqueues(void) | |
1622 | { | |
1623 | /* | |
1624 | * max_active is set to 8 to give enough concurency to allow | |
1625 | * multiple work operations on each CPU to run. This allows multiple | |
1626 | * filesystems to be running sync work concurrently, and scales with | |
1627 | * the number of CPUs in the system. | |
1628 | */ | |
1629 | xfs_syncd_wq = alloc_workqueue("xfssyncd", WQ_CPU_INTENSIVE, 8); | |
1630 | if (!xfs_syncd_wq) | |
0030807c | 1631 | return -ENOMEM; |
0bf6a5bd | 1632 | return 0; |
0bf6a5bd DC |
1633 | } |
1634 | ||
39411f81 | 1635 | STATIC void |
0bf6a5bd DC |
1636 | xfs_destroy_workqueues(void) |
1637 | { | |
0bf6a5bd DC |
1638 | destroy_workqueue(xfs_syncd_wq); |
1639 | } | |
1640 | ||
1da177e4 | 1641 | STATIC int __init |
9f8868ff | 1642 | init_xfs_fs(void) |
1da177e4 LT |
1643 | { |
1644 | int error; | |
1da177e4 | 1645 | |
65795910 CH |
1646 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1647 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1648 | |
9f8868ff | 1649 | xfs_dir_startup(); |
1da177e4 | 1650 | |
8758280f | 1651 | error = xfs_init_zones(); |
9f8868ff CH |
1652 | if (error) |
1653 | goto out; | |
1654 | ||
0bf6a5bd | 1655 | error = xfs_init_workqueues(); |
9f8868ff | 1656 | if (error) |
0b1b213f | 1657 | goto out_destroy_zones; |
9f8868ff | 1658 | |
0bf6a5bd DC |
1659 | error = xfs_mru_cache_init(); |
1660 | if (error) | |
1661 | goto out_destroy_wq; | |
1662 | ||
9f8868ff CH |
1663 | error = xfs_filestream_init(); |
1664 | if (error) | |
1665 | goto out_mru_cache_uninit; | |
1da177e4 | 1666 | |
ce8e922c | 1667 | error = xfs_buf_init(); |
9f8868ff CH |
1668 | if (error) |
1669 | goto out_filestream_uninit; | |
1670 | ||
1671 | error = xfs_init_procfs(); | |
1672 | if (error) | |
1673 | goto out_buf_terminate; | |
1674 | ||
1675 | error = xfs_sysctl_register(); | |
1676 | if (error) | |
1677 | goto out_cleanup_procfs; | |
1da177e4 | 1678 | |
1da177e4 LT |
1679 | vfs_initquota(); |
1680 | ||
1681 | error = register_filesystem(&xfs_fs_type); | |
1682 | if (error) | |
0bf6a5bd | 1683 | goto out_sysctl_unregister; |
1da177e4 LT |
1684 | return 0; |
1685 | ||
9f8868ff CH |
1686 | out_sysctl_unregister: |
1687 | xfs_sysctl_unregister(); | |
1688 | out_cleanup_procfs: | |
1689 | xfs_cleanup_procfs(); | |
1690 | out_buf_terminate: | |
ce8e922c | 1691 | xfs_buf_terminate(); |
9f8868ff CH |
1692 | out_filestream_uninit: |
1693 | xfs_filestream_uninit(); | |
1694 | out_mru_cache_uninit: | |
1695 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1696 | out_destroy_wq: |
1697 | xfs_destroy_workqueues(); | |
9f8868ff | 1698 | out_destroy_zones: |
8758280f | 1699 | xfs_destroy_zones(); |
9f8868ff | 1700 | out: |
1da177e4 LT |
1701 | return error; |
1702 | } | |
1703 | ||
1704 | STATIC void __exit | |
9f8868ff | 1705 | exit_xfs_fs(void) |
1da177e4 LT |
1706 | { |
1707 | vfs_exitquota(); | |
1da177e4 | 1708 | unregister_filesystem(&xfs_fs_type); |
9f8868ff CH |
1709 | xfs_sysctl_unregister(); |
1710 | xfs_cleanup_procfs(); | |
ce8e922c | 1711 | xfs_buf_terminate(); |
9f8868ff CH |
1712 | xfs_filestream_uninit(); |
1713 | xfs_mru_cache_uninit(); | |
0bf6a5bd | 1714 | xfs_destroy_workqueues(); |
8758280f | 1715 | xfs_destroy_zones(); |
1da177e4 LT |
1716 | } |
1717 | ||
1718 | module_init(init_xfs_fs); | |
1719 | module_exit(exit_xfs_fs); | |
1720 | ||
1721 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1722 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1723 | MODULE_LICENSE("GPL"); |