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1da177e4 | 1 | /* |
a805bad5 | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 3 | * All Rights Reserved. |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
0b1b213f | 18 | |
1da177e4 | 19 | #include "xfs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
6ca1c906 | 21 | #include "xfs_format.h" |
239880ef DC |
22 | #include "xfs_log_format.h" |
23 | #include "xfs_trans_resv.h" | |
a844f451 | 24 | #include "xfs_inum.h" |
1da177e4 | 25 | #include "xfs_sb.h" |
a844f451 | 26 | #include "xfs_ag.h" |
1da177e4 | 27 | #include "xfs_mount.h" |
57062787 | 28 | #include "xfs_da_format.h" |
1da177e4 | 29 | #include "xfs_inode.h" |
a844f451 | 30 | #include "xfs_btree.h" |
1da177e4 | 31 | #include "xfs_bmap.h" |
a4fbe6ab | 32 | #include "xfs_alloc.h" |
1da177e4 | 33 | #include "xfs_error.h" |
9909c4aa | 34 | #include "xfs_fsops.h" |
239880ef | 35 | #include "xfs_trans.h" |
1da177e4 | 36 | #include "xfs_buf_item.h" |
239880ef | 37 | #include "xfs_log.h" |
a67d7c5f | 38 | #include "xfs_log_priv.h" |
9f8868ff | 39 | #include "xfs_da_btree.h" |
2b9ab5ab | 40 | #include "xfs_dir2.h" |
9f8868ff CH |
41 | #include "xfs_extfree_item.h" |
42 | #include "xfs_mru_cache.h" | |
43 | #include "xfs_inode_item.h" | |
6d8b79cf | 44 | #include "xfs_icache.h" |
0b1b213f | 45 | #include "xfs_trace.h" |
3ebe7d2d | 46 | #include "xfs_icreate_item.h" |
a4fbe6ab DC |
47 | #include "xfs_dinode.h" |
48 | #include "xfs_filestream.h" | |
49 | #include "xfs_quota.h" | |
1da177e4 LT |
50 | |
51 | #include <linux/namei.h> | |
52 | #include <linux/init.h> | |
5a0e3ad6 | 53 | #include <linux/slab.h> |
1da177e4 | 54 | #include <linux/mount.h> |
0829c360 | 55 | #include <linux/mempool.h> |
1da177e4 | 56 | #include <linux/writeback.h> |
4df08c52 | 57 | #include <linux/kthread.h> |
7dfb7103 | 58 | #include <linux/freezer.h> |
62a877e3 | 59 | #include <linux/parser.h> |
1da177e4 | 60 | |
b87221de | 61 | static const struct super_operations xfs_super_operations; |
7989cb8e | 62 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 63 | mempool_t *xfs_ioend_pool; |
3d871226 | 64 | struct kset *xfs_kset; |
1da177e4 | 65 | |
a67d7c5f DC |
66 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ |
67 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
68 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
69 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
70 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
71 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
a67d7c5f DC |
72 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ |
73 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
74 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
75 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
76 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
77 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
78 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ | |
79 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
80 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
81 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
82 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ | |
83 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
84 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and | |
85 | * unwritten extent conversion */ | |
86 | #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */ | |
a67d7c5f | 87 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ |
08bf5404 CM |
88 | #define MNTOPT_32BITINODE "inode32" /* inode allocation limited to |
89 | * XFS_MAXINUMBER_32 */ | |
a67d7c5f DC |
90 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ |
91 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
92 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ | |
93 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
94 | * in stat(). */ | |
95 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ | |
96 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
97 | #define MNTOPT_FILESTREAM "filestreams" /* use filestreams allocator */ | |
98 | #define MNTOPT_QUOTA "quota" /* disk quotas (user) */ | |
99 | #define MNTOPT_NOQUOTA "noquota" /* no quotas */ | |
100 | #define MNTOPT_USRQUOTA "usrquota" /* user quota enabled */ | |
101 | #define MNTOPT_GRPQUOTA "grpquota" /* group quota enabled */ | |
102 | #define MNTOPT_PRJQUOTA "prjquota" /* project quota enabled */ | |
103 | #define MNTOPT_UQUOTA "uquota" /* user quota (IRIX variant) */ | |
104 | #define MNTOPT_GQUOTA "gquota" /* group quota (IRIX variant) */ | |
105 | #define MNTOPT_PQUOTA "pquota" /* project quota (IRIX variant) */ | |
106 | #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */ | |
107 | #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */ | |
108 | #define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */ | |
109 | #define MNTOPT_QUOTANOENF "qnoenforce" /* same as uqnoenforce */ | |
e84661aa CH |
110 | #define MNTOPT_DELAYLOG "delaylog" /* Delayed logging enabled */ |
111 | #define MNTOPT_NODELAYLOG "nodelaylog" /* Delayed logging disabled */ | |
112 | #define MNTOPT_DISCARD "discard" /* Discard unused blocks */ | |
113 | #define MNTOPT_NODISCARD "nodiscard" /* Do not discard unused blocks */ | |
a67d7c5f | 114 | |
62a877e3 CH |
115 | /* |
116 | * Table driven mount option parser. | |
117 | * | |
118 | * Currently only used for remount, but it will be used for mount | |
119 | * in the future, too. | |
120 | */ | |
121 | enum { | |
2ea03929 CM |
122 | Opt_barrier, |
123 | Opt_nobarrier, | |
124 | Opt_inode64, | |
125 | Opt_inode32, | |
126 | Opt_err | |
62a877e3 CH |
127 | }; |
128 | ||
a447c093 | 129 | static const match_table_t tokens = { |
62a877e3 CH |
130 | {Opt_barrier, "barrier"}, |
131 | {Opt_nobarrier, "nobarrier"}, | |
c3a58fec | 132 | {Opt_inode64, "inode64"}, |
2ea03929 | 133 | {Opt_inode32, "inode32"}, |
62a877e3 CH |
134 | {Opt_err, NULL} |
135 | }; | |
136 | ||
137 | ||
a67d7c5f | 138 | STATIC unsigned long |
a17164e5 | 139 | suffix_kstrtoint(char *s, unsigned int base, int *res) |
a67d7c5f | 140 | { |
a17164e5 | 141 | int last, shift_left_factor = 0, _res; |
a67d7c5f DC |
142 | char *value = s; |
143 | ||
144 | last = strlen(value) - 1; | |
145 | if (value[last] == 'K' || value[last] == 'k') { | |
146 | shift_left_factor = 10; | |
147 | value[last] = '\0'; | |
148 | } | |
149 | if (value[last] == 'M' || value[last] == 'm') { | |
150 | shift_left_factor = 20; | |
151 | value[last] = '\0'; | |
152 | } | |
153 | if (value[last] == 'G' || value[last] == 'g') { | |
154 | shift_left_factor = 30; | |
155 | value[last] = '\0'; | |
156 | } | |
157 | ||
a17164e5 AP |
158 | if (kstrtoint(s, base, &_res)) |
159 | return -EINVAL; | |
160 | *res = _res << shift_left_factor; | |
161 | return 0; | |
a67d7c5f DC |
162 | } |
163 | ||
9d565ffa CH |
164 | /* |
165 | * This function fills in xfs_mount_t fields based on mount args. | |
166 | * Note: the superblock has _not_ yet been read in. | |
167 | * | |
168 | * Note that this function leaks the various device name allocations on | |
169 | * failure. The caller takes care of them. | |
170 | */ | |
a67d7c5f DC |
171 | STATIC int |
172 | xfs_parseargs( | |
173 | struct xfs_mount *mp, | |
288699fe | 174 | char *options) |
a67d7c5f | 175 | { |
9d565ffa | 176 | struct super_block *sb = mp->m_super; |
a17164e5 | 177 | char *this_char, *value; |
9d565ffa CH |
178 | int dsunit = 0; |
179 | int dswidth = 0; | |
180 | int iosize = 0; | |
a5687787 | 181 | __uint8_t iosizelog = 0; |
9d565ffa | 182 | |
4f10700a DC |
183 | /* |
184 | * set up the mount name first so all the errors will refer to the | |
185 | * correct device. | |
186 | */ | |
187 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
188 | if (!mp->m_fsname) | |
2451337d | 189 | return -ENOMEM; |
4f10700a DC |
190 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
191 | ||
9d565ffa CH |
192 | /* |
193 | * Copy binary VFS mount flags we are interested in. | |
194 | */ | |
195 | if (sb->s_flags & MS_RDONLY) | |
196 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
197 | if (sb->s_flags & MS_DIRSYNC) | |
198 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
199 | if (sb->s_flags & MS_SYNCHRONOUS) | |
200 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
201 | ||
202 | /* | |
203 | * Set some default flags that could be cleared by the mount option | |
204 | * parsing. | |
205 | */ | |
206 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
207 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
a67d7c5f | 208 | |
9d565ffa CH |
209 | /* |
210 | * These can be overridden by the mount option parsing. | |
211 | */ | |
212 | mp->m_logbufs = -1; | |
213 | mp->m_logbsize = -1; | |
a67d7c5f DC |
214 | |
215 | if (!options) | |
216 | goto done; | |
217 | ||
a67d7c5f DC |
218 | while ((this_char = strsep(&options, ",")) != NULL) { |
219 | if (!*this_char) | |
220 | continue; | |
221 | if ((value = strchr(this_char, '=')) != NULL) | |
222 | *value++ = 0; | |
223 | ||
224 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
225 | if (!value || !*value) { | |
4f10700a | 226 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 227 | this_char); |
2451337d | 228 | return -EINVAL; |
a67d7c5f | 229 | } |
a17164e5 | 230 | if (kstrtoint(value, 10, &mp->m_logbufs)) |
2451337d | 231 | return -EINVAL; |
a67d7c5f DC |
232 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { |
233 | if (!value || !*value) { | |
4f10700a | 234 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 235 | this_char); |
2451337d | 236 | return -EINVAL; |
a67d7c5f | 237 | } |
a17164e5 | 238 | if (suffix_kstrtoint(value, 10, &mp->m_logbsize)) |
2451337d | 239 | return -EINVAL; |
a67d7c5f DC |
240 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
241 | if (!value || !*value) { | |
4f10700a | 242 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 243 | this_char); |
2451337d | 244 | return -EINVAL; |
a67d7c5f | 245 | } |
9d565ffa CH |
246 | mp->m_logname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
247 | if (!mp->m_logname) | |
2451337d | 248 | return -ENOMEM; |
a67d7c5f | 249 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { |
4f10700a | 250 | xfs_warn(mp, "%s option not allowed on this system", |
288699fe | 251 | this_char); |
2451337d | 252 | return -EINVAL; |
a67d7c5f DC |
253 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { |
254 | if (!value || !*value) { | |
4f10700a | 255 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 256 | this_char); |
2451337d | 257 | return -EINVAL; |
a67d7c5f | 258 | } |
9d565ffa CH |
259 | mp->m_rtname = kstrndup(value, MAXNAMELEN, GFP_KERNEL); |
260 | if (!mp->m_rtname) | |
2451337d | 261 | return -ENOMEM; |
a67d7c5f DC |
262 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { |
263 | if (!value || !*value) { | |
4f10700a | 264 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 265 | this_char); |
2451337d | 266 | return -EINVAL; |
a67d7c5f | 267 | } |
a17164e5 | 268 | if (kstrtoint(value, 10, &iosize)) |
2451337d | 269 | return -EINVAL; |
1ec7944b | 270 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
271 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
272 | if (!value || !*value) { | |
4f10700a | 273 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 274 | this_char); |
2451337d | 275 | return -EINVAL; |
a67d7c5f | 276 | } |
a17164e5 | 277 | if (suffix_kstrtoint(value, 10, &iosize)) |
2451337d | 278 | return -EINVAL; |
9d565ffa | 279 | iosizelog = ffs(iosize) - 1; |
a67d7c5f DC |
280 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
281 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
282 | mp->m_flags |= XFS_MOUNT_GRPID; | |
283 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
284 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
285 | mp->m_flags &= ~XFS_MOUNT_GRPID; | |
286 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { | |
9d565ffa | 287 | mp->m_flags |= XFS_MOUNT_WSYNC; |
a67d7c5f | 288 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { |
9d565ffa | 289 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
a67d7c5f | 290 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { |
9d565ffa | 291 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
a67d7c5f | 292 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { |
9d565ffa | 293 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
a67d7c5f DC |
294 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { |
295 | if (!value || !*value) { | |
4f10700a | 296 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 297 | this_char); |
2451337d | 298 | return -EINVAL; |
a67d7c5f | 299 | } |
a17164e5 | 300 | if (kstrtoint(value, 10, &dsunit)) |
2451337d | 301 | return -EINVAL; |
a67d7c5f DC |
302 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { |
303 | if (!value || !*value) { | |
4f10700a | 304 | xfs_warn(mp, "%s option requires an argument", |
a67d7c5f | 305 | this_char); |
2451337d | 306 | return -EINVAL; |
a67d7c5f | 307 | } |
a17164e5 | 308 | if (kstrtoint(value, 10, &dswidth)) |
2451337d | 309 | return -EINVAL; |
08bf5404 CM |
310 | } else if (!strcmp(this_char, MNTOPT_32BITINODE)) { |
311 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; | |
a67d7c5f | 312 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { |
9d565ffa | 313 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
a67d7c5f | 314 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { |
9d565ffa | 315 | mp->m_flags |= XFS_MOUNT_NOUUID; |
a67d7c5f | 316 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
9d565ffa | 317 | mp->m_flags |= XFS_MOUNT_BARRIER; |
a67d7c5f | 318 | } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) { |
9d565ffa | 319 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
a67d7c5f | 320 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
9d565ffa | 321 | mp->m_flags |= XFS_MOUNT_IKEEP; |
a67d7c5f | 322 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { |
9d565ffa | 323 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
a67d7c5f | 324 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
9d565ffa | 325 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 326 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
9d565ffa | 327 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 328 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
9d565ffa | 329 | mp->m_flags |= XFS_MOUNT_ATTR2; |
a67d7c5f | 330 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { |
9d565ffa CH |
331 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
332 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
a67d7c5f | 333 | } else if (!strcmp(this_char, MNTOPT_FILESTREAM)) { |
9d565ffa | 334 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
a67d7c5f | 335 | } else if (!strcmp(this_char, MNTOPT_NOQUOTA)) { |
4177af3a CS |
336 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
337 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
338 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
a67d7c5f DC |
339 | } else if (!strcmp(this_char, MNTOPT_QUOTA) || |
340 | !strcmp(this_char, MNTOPT_UQUOTA) || | |
341 | !strcmp(this_char, MNTOPT_USRQUOTA)) { | |
9d565ffa CH |
342 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
343 | XFS_UQUOTA_ENFD); | |
a67d7c5f DC |
344 | } else if (!strcmp(this_char, MNTOPT_QUOTANOENF) || |
345 | !strcmp(this_char, MNTOPT_UQUOTANOENF)) { | |
9d565ffa CH |
346 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
347 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
a67d7c5f DC |
348 | } else if (!strcmp(this_char, MNTOPT_PQUOTA) || |
349 | !strcmp(this_char, MNTOPT_PRJQUOTA)) { | |
9d565ffa | 350 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 351 | XFS_PQUOTA_ENFD); |
a67d7c5f | 352 | } else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) { |
9d565ffa | 353 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 354 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
a67d7c5f DC |
355 | } else if (!strcmp(this_char, MNTOPT_GQUOTA) || |
356 | !strcmp(this_char, MNTOPT_GRPQUOTA)) { | |
9d565ffa | 357 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 358 | XFS_GQUOTA_ENFD); |
a67d7c5f | 359 | } else if (!strcmp(this_char, MNTOPT_GQUOTANOENF)) { |
9d565ffa | 360 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 361 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
71e330b5 | 362 | } else if (!strcmp(this_char, MNTOPT_DELAYLOG)) { |
93b8a585 CH |
363 | xfs_warn(mp, |
364 | "delaylog is the default now, option is deprecated."); | |
71e330b5 | 365 | } else if (!strcmp(this_char, MNTOPT_NODELAYLOG)) { |
242d6219 | 366 | xfs_warn(mp, |
93b8a585 | 367 | "nodelaylog support has been removed, option is deprecated."); |
e84661aa CH |
368 | } else if (!strcmp(this_char, MNTOPT_DISCARD)) { |
369 | mp->m_flags |= XFS_MOUNT_DISCARD; | |
370 | } else if (!strcmp(this_char, MNTOPT_NODISCARD)) { | |
371 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
a67d7c5f | 372 | } else if (!strcmp(this_char, "ihashsize")) { |
4f10700a DC |
373 | xfs_warn(mp, |
374 | "ihashsize no longer used, option is deprecated."); | |
a67d7c5f | 375 | } else if (!strcmp(this_char, "osyncisdsync")) { |
4f10700a DC |
376 | xfs_warn(mp, |
377 | "osyncisdsync has no effect, option is deprecated."); | |
a64afb05 | 378 | } else if (!strcmp(this_char, "osyncisosync")) { |
4f10700a DC |
379 | xfs_warn(mp, |
380 | "osyncisosync has no effect, option is deprecated."); | |
a67d7c5f | 381 | } else if (!strcmp(this_char, "irixsgid")) { |
4f10700a DC |
382 | xfs_warn(mp, |
383 | "irixsgid is now a sysctl(2) variable, option is deprecated."); | |
a67d7c5f | 384 | } else { |
4f10700a | 385 | xfs_warn(mp, "unknown mount option [%s].", this_char); |
2451337d | 386 | return -EINVAL; |
a67d7c5f DC |
387 | } |
388 | } | |
389 | ||
9d565ffa CH |
390 | /* |
391 | * no recovery flag requires a read-only mount | |
392 | */ | |
393 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
394 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 395 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 396 | return -EINVAL; |
a67d7c5f DC |
397 | } |
398 | ||
9d565ffa | 399 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
400 | xfs_warn(mp, |
401 | "sunit and swidth options incompatible with the noalign option"); | |
2451337d | 402 | return -EINVAL; |
a67d7c5f DC |
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."); |
2451337d | 408 | return -EINVAL; |
7d095257 CH |
409 | } |
410 | #endif | |
411 | ||
a67d7c5f | 412 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 413 | xfs_warn(mp, "sunit and swidth must be specified together"); |
2451337d | 414 | return -EINVAL; |
a67d7c5f DC |
415 | } |
416 | ||
417 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
418 | xfs_warn(mp, |
419 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f | 420 | dswidth, dsunit); |
2451337d | 421 | return -EINVAL; |
a67d7c5f DC |
422 | } |
423 | ||
9d565ffa | 424 | done: |
39a45d84 | 425 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
426 | /* |
427 | * At this point the superblock has not been read | |
428 | * in, therefore we do not know the block size. | |
429 | * Before the mount call ends we will convert | |
430 | * these to FSBs. | |
431 | */ | |
39a45d84 JL |
432 | mp->m_dalign = dsunit; |
433 | mp->m_swidth = dswidth; | |
9d565ffa CH |
434 | } |
435 | ||
436 | if (mp->m_logbufs != -1 && | |
437 | mp->m_logbufs != 0 && | |
438 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
439 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 440 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa | 441 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
2451337d | 442 | return -EINVAL; |
9d565ffa CH |
443 | } |
444 | if (mp->m_logbsize != -1 && | |
445 | mp->m_logbsize != 0 && | |
446 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
447 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
448 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
449 | xfs_warn(mp, |
450 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa | 451 | mp->m_logbsize); |
2451337d | 452 | return -EINVAL; |
9d565ffa CH |
453 | } |
454 | ||
9d565ffa CH |
455 | if (iosizelog) { |
456 | if (iosizelog > XFS_MAX_IO_LOG || | |
457 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 458 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
459 | iosizelog, XFS_MIN_IO_LOG, |
460 | XFS_MAX_IO_LOG); | |
2451337d | 461 | return -EINVAL; |
9d565ffa CH |
462 | } |
463 | ||
464 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
465 | mp->m_readio_log = iosizelog; | |
466 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
467 | } |
468 | ||
a67d7c5f DC |
469 | return 0; |
470 | } | |
471 | ||
472 | struct proc_xfs_info { | |
473 | int flag; | |
474 | char *str; | |
475 | }; | |
476 | ||
477 | STATIC int | |
478 | xfs_showargs( | |
479 | struct xfs_mount *mp, | |
480 | struct seq_file *m) | |
481 | { | |
482 | static struct proc_xfs_info xfs_info_set[] = { | |
483 | /* the few simple ones we can get from the mount struct */ | |
1bd960ee | 484 | { XFS_MOUNT_IKEEP, "," MNTOPT_IKEEP }, |
a67d7c5f | 485 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, |
a67d7c5f DC |
486 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, |
487 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
488 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
489 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
a67d7c5f DC |
490 | { XFS_MOUNT_ATTR2, "," MNTOPT_ATTR2 }, |
491 | { XFS_MOUNT_FILESTREAMS, "," MNTOPT_FILESTREAM }, | |
a67d7c5f | 492 | { XFS_MOUNT_GRPID, "," MNTOPT_GRPID }, |
e84661aa | 493 | { XFS_MOUNT_DISCARD, "," MNTOPT_DISCARD }, |
08bf5404 | 494 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_32BITINODE }, |
a67d7c5f DC |
495 | { 0, NULL } |
496 | }; | |
497 | static struct proc_xfs_info xfs_info_unset[] = { | |
498 | /* the few simple ones we can get from the mount struct */ | |
a67d7c5f DC |
499 | { XFS_MOUNT_COMPAT_IOSIZE, "," MNTOPT_LARGEIO }, |
500 | { XFS_MOUNT_BARRIER, "," MNTOPT_NOBARRIER }, | |
501 | { XFS_MOUNT_SMALL_INUMS, "," MNTOPT_64BITINODE }, | |
502 | { 0, NULL } | |
503 | }; | |
504 | struct proc_xfs_info *xfs_infop; | |
505 | ||
506 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
507 | if (mp->m_flags & xfs_infop->flag) | |
508 | seq_puts(m, xfs_infop->str); | |
509 | } | |
510 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
511 | if (!(mp->m_flags & xfs_infop->flag)) | |
512 | seq_puts(m, xfs_infop->str); | |
513 | } | |
514 | ||
515 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
516 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", | |
517 | (int)(1 << mp->m_writeio_log) >> 10); | |
518 | ||
519 | if (mp->m_logbufs > 0) | |
520 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
521 | if (mp->m_logbsize > 0) | |
522 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); | |
523 | ||
524 | if (mp->m_logname) | |
525 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
526 | if (mp->m_rtname) | |
527 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
528 | ||
529 | if (mp->m_dalign > 0) | |
530 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
531 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
532 | if (mp->m_swidth > 0) | |
533 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
534 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
535 | ||
536 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
537 | seq_puts(m, "," MNTOPT_USRQUOTA); | |
538 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
539 | seq_puts(m, "," MNTOPT_UQUOTANOENF); | |
540 | ||
988abe40 | 541 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 542 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
988abe40 AE |
543 | seq_puts(m, "," MNTOPT_PRJQUOTA); |
544 | else | |
545 | seq_puts(m, "," MNTOPT_PQUOTANOENF); | |
d892d586 CS |
546 | } |
547 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 548 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
988abe40 AE |
549 | seq_puts(m, "," MNTOPT_GRPQUOTA); |
550 | else | |
551 | seq_puts(m, "," MNTOPT_GQUOTANOENF); | |
552 | } | |
a67d7c5f DC |
553 | |
554 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
555 | seq_puts(m, "," MNTOPT_NOQUOTA); | |
556 | ||
557 | return 0; | |
558 | } | |
1da177e4 LT |
559 | __uint64_t |
560 | xfs_max_file_offset( | |
561 | unsigned int blockshift) | |
562 | { | |
563 | unsigned int pagefactor = 1; | |
564 | unsigned int bitshift = BITS_PER_LONG - 1; | |
565 | ||
566 | /* Figure out maximum filesize, on Linux this can depend on | |
567 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 568 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
569 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
570 | * So, for page sized blocks (4K on 32 bit platforms), | |
571 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
572 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
573 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
574 | * Note1: get_block_t takes a long (implicit cast from above) | |
575 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
576 | * can optionally convert the [unsigned] long from above into | |
577 | * an [unsigned] long long. | |
578 | */ | |
579 | ||
580 | #if BITS_PER_LONG == 32 | |
90c699a9 | 581 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
582 | ASSERT(sizeof(sector_t) == 8); |
583 | pagefactor = PAGE_CACHE_SIZE; | |
584 | bitshift = BITS_PER_LONG; | |
585 | # else | |
586 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
587 | # endif | |
588 | #endif | |
589 | ||
590 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
591 | } | |
592 | ||
9de67c3b ES |
593 | /* |
594 | * xfs_set_inode32() and xfs_set_inode64() are passed an agcount | |
595 | * because in the growfs case, mp->m_sb.sb_agcount is not updated | |
596 | * yet to the potentially higher ag count. | |
597 | */ | |
2d2194f6 | 598 | xfs_agnumber_t |
9de67c3b | 599 | xfs_set_inode32(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
600 | { |
601 | xfs_agnumber_t index = 0; | |
4056c1d0 | 602 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
603 | xfs_sb_t *sbp = &mp->m_sb; |
604 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
605 | xfs_agino_t agino; |
606 | xfs_ino_t ino; | |
2d2194f6 CM |
607 | xfs_perag_t *pag; |
608 | ||
609 | /* Calculate how much should be reserved for inodes to meet | |
610 | * the max inode percentage. | |
611 | */ | |
612 | if (mp->m_maxicount) { | |
613 | __uint64_t icount; | |
614 | ||
615 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
616 | do_div(icount, 100); | |
617 | icount += sbp->sb_agblocks - 1; | |
618 | do_div(icount, sbp->sb_agblocks); | |
619 | max_metadata = icount; | |
620 | } else { | |
9de67c3b | 621 | max_metadata = agcount; |
2d2194f6 CM |
622 | } |
623 | ||
54aa61f8 ES |
624 | agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); |
625 | ||
9de67c3b | 626 | for (index = 0; index < agcount; index++) { |
2d2194f6 | 627 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
4056c1d0 | 628 | |
2d2194f6 | 629 | if (ino > XFS_MAXINUMBER_32) { |
4056c1d0 CM |
630 | pag = xfs_perag_get(mp, index); |
631 | pag->pagi_inodeok = 0; | |
632 | pag->pagf_metadata = 0; | |
633 | xfs_perag_put(pag); | |
634 | continue; | |
2d2194f6 CM |
635 | } |
636 | ||
637 | pag = xfs_perag_get(mp, index); | |
638 | pag->pagi_inodeok = 1; | |
4056c1d0 | 639 | maxagi++; |
2d2194f6 CM |
640 | if (index < max_metadata) |
641 | pag->pagf_metadata = 1; | |
642 | xfs_perag_put(pag); | |
643 | } | |
4056c1d0 CM |
644 | mp->m_flags |= (XFS_MOUNT_32BITINODES | |
645 | XFS_MOUNT_SMALL_INUMS); | |
646 | ||
647 | return maxagi; | |
2d2194f6 CM |
648 | } |
649 | ||
650 | xfs_agnumber_t | |
9de67c3b | 651 | xfs_set_inode64(struct xfs_mount *mp, xfs_agnumber_t agcount) |
2d2194f6 CM |
652 | { |
653 | xfs_agnumber_t index = 0; | |
654 | ||
9de67c3b | 655 | for (index = 0; index < agcount; index++) { |
2d2194f6 CM |
656 | struct xfs_perag *pag; |
657 | ||
658 | pag = xfs_perag_get(mp, index); | |
659 | pag->pagi_inodeok = 1; | |
660 | pag->pagf_metadata = 0; | |
661 | xfs_perag_put(pag); | |
662 | } | |
663 | ||
664 | /* There is no need for lock protection on m_flags, | |
665 | * the rw_semaphore of the VFS superblock is locked | |
666 | * during mount/umount/remount operations, so this is | |
667 | * enough to avoid concurency on the m_flags field | |
668 | */ | |
669 | mp->m_flags &= ~(XFS_MOUNT_32BITINODES | | |
670 | XFS_MOUNT_SMALL_INUMS); | |
671 | return index; | |
672 | } | |
673 | ||
3180e66d | 674 | STATIC int |
1da177e4 LT |
675 | xfs_blkdev_get( |
676 | xfs_mount_t *mp, | |
677 | const char *name, | |
678 | struct block_device **bdevp) | |
679 | { | |
680 | int error = 0; | |
681 | ||
d4d77629 TH |
682 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
683 | mp); | |
1da177e4 LT |
684 | if (IS_ERR(*bdevp)) { |
685 | error = PTR_ERR(*bdevp); | |
4f10700a | 686 | xfs_warn(mp, "Invalid device [%s], error=%d\n", name, error); |
1da177e4 LT |
687 | } |
688 | ||
2451337d | 689 | return error; |
1da177e4 LT |
690 | } |
691 | ||
3180e66d | 692 | STATIC void |
1da177e4 LT |
693 | xfs_blkdev_put( |
694 | struct block_device *bdev) | |
695 | { | |
696 | if (bdev) | |
e525fd89 | 697 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
698 | } |
699 | ||
f538d4da CH |
700 | void |
701 | xfs_blkdev_issue_flush( | |
702 | xfs_buftarg_t *buftarg) | |
703 | { | |
7582df51 | 704 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 705 | } |
1da177e4 | 706 | |
19f354d4 CH |
707 | STATIC void |
708 | xfs_close_devices( | |
709 | struct xfs_mount *mp) | |
710 | { | |
711 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 712 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 713 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 714 | xfs_blkdev_put(logdev); |
19f354d4 CH |
715 | } |
716 | if (mp->m_rtdev_targp) { | |
c032bfcf | 717 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 718 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 719 | xfs_blkdev_put(rtdev); |
19f354d4 | 720 | } |
b7963133 | 721 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
722 | } |
723 | ||
724 | /* | |
725 | * The file system configurations are: | |
726 | * (1) device (partition) with data and internal log | |
727 | * (2) logical volume with data and log subvolumes. | |
728 | * (3) logical volume with data, log, and realtime subvolumes. | |
729 | * | |
730 | * We only have to handle opening the log and realtime volumes here if | |
731 | * they are present. The data subvolume has already been opened by | |
732 | * get_sb_bdev() and is stored in sb->s_bdev. | |
733 | */ | |
734 | STATIC int | |
735 | xfs_open_devices( | |
9d565ffa | 736 | struct xfs_mount *mp) |
19f354d4 CH |
737 | { |
738 | struct block_device *ddev = mp->m_super->s_bdev; | |
739 | struct block_device *logdev = NULL, *rtdev = NULL; | |
740 | int error; | |
741 | ||
742 | /* | |
743 | * Open real time and log devices - order is important. | |
744 | */ | |
9d565ffa CH |
745 | if (mp->m_logname) { |
746 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
747 | if (error) |
748 | goto out; | |
749 | } | |
750 | ||
9d565ffa CH |
751 | if (mp->m_rtname) { |
752 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
753 | if (error) |
754 | goto out_close_logdev; | |
755 | ||
756 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
757 | xfs_warn(mp, |
758 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 759 | error = -EINVAL; |
19f354d4 CH |
760 | goto out_close_rtdev; |
761 | } | |
762 | } | |
763 | ||
764 | /* | |
765 | * Setup xfs_mount buffer target pointers | |
766 | */ | |
2451337d | 767 | error = -ENOMEM; |
34dcefd7 | 768 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev); |
19f354d4 CH |
769 | if (!mp->m_ddev_targp) |
770 | goto out_close_rtdev; | |
771 | ||
772 | if (rtdev) { | |
34dcefd7 | 773 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); |
19f354d4 CH |
774 | if (!mp->m_rtdev_targp) |
775 | goto out_free_ddev_targ; | |
776 | } | |
777 | ||
778 | if (logdev && logdev != ddev) { | |
34dcefd7 | 779 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev); |
19f354d4 CH |
780 | if (!mp->m_logdev_targp) |
781 | goto out_free_rtdev_targ; | |
782 | } else { | |
783 | mp->m_logdev_targp = mp->m_ddev_targp; | |
784 | } | |
785 | ||
786 | return 0; | |
787 | ||
788 | out_free_rtdev_targ: | |
789 | if (mp->m_rtdev_targp) | |
b7963133 | 790 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 791 | out_free_ddev_targ: |
b7963133 | 792 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
793 | out_close_rtdev: |
794 | if (rtdev) | |
795 | xfs_blkdev_put(rtdev); | |
796 | out_close_logdev: | |
797 | if (logdev && logdev != ddev) | |
798 | xfs_blkdev_put(logdev); | |
799 | out: | |
800 | return error; | |
801 | } | |
802 | ||
e34b562c CH |
803 | /* |
804 | * Setup xfs_mount buffer target pointers based on superblock | |
805 | */ | |
806 | STATIC int | |
807 | xfs_setup_devices( | |
808 | struct xfs_mount *mp) | |
809 | { | |
810 | int error; | |
19f354d4 | 811 | |
a96c4151 | 812 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
813 | if (error) |
814 | return error; | |
815 | ||
816 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
817 | unsigned int log_sector_size = BBSIZE; | |
818 | ||
819 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
820 | log_sector_size = mp->m_sb.sb_logsectsize; | |
821 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
822 | log_sector_size); |
823 | if (error) | |
824 | return error; | |
825 | } | |
826 | if (mp->m_rtdev_targp) { | |
827 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
828 | mp->m_sb.sb_sectsize); |
829 | if (error) | |
830 | return error; | |
831 | } | |
832 | ||
833 | return 0; | |
834 | } | |
19f354d4 | 835 | |
aa6bf01d CH |
836 | STATIC int |
837 | xfs_init_mount_workqueues( | |
838 | struct xfs_mount *mp) | |
839 | { | |
840 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", | |
8018ec08 | 841 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d CH |
842 | if (!mp->m_data_workqueue) |
843 | goto out; | |
844 | ||
845 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", | |
8018ec08 | 846 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d CH |
847 | if (!mp->m_unwritten_workqueue) |
848 | goto out_destroy_data_iodone_queue; | |
849 | ||
4c2d542f | 850 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
8018ec08 | 851 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
4c2d542f DC |
852 | if (!mp->m_cil_workqueue) |
853 | goto out_destroy_unwritten; | |
5889608d DC |
854 | |
855 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
8018ec08 | 856 | WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
857 | if (!mp->m_reclaim_workqueue) |
858 | goto out_destroy_cil; | |
859 | ||
860 | mp->m_log_workqueue = alloc_workqueue("xfs-log/%s", | |
8018ec08 | 861 | WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
862 | if (!mp->m_log_workqueue) |
863 | goto out_destroy_reclaim; | |
864 | ||
579b62fa | 865 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
8018ec08 | 866 | WQ_FREEZABLE, 0, mp->m_fsname); |
579b62fa BF |
867 | if (!mp->m_eofblocks_workqueue) |
868 | goto out_destroy_log; | |
869 | ||
aa6bf01d CH |
870 | return 0; |
871 | ||
579b62fa BF |
872 | out_destroy_log: |
873 | destroy_workqueue(mp->m_log_workqueue); | |
5889608d DC |
874 | out_destroy_reclaim: |
875 | destroy_workqueue(mp->m_reclaim_workqueue); | |
876 | out_destroy_cil: | |
877 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
878 | out_destroy_unwritten: |
879 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
880 | out_destroy_data_iodone_queue: |
881 | destroy_workqueue(mp->m_data_workqueue); | |
882 | out: | |
883 | return -ENOMEM; | |
884 | } | |
885 | ||
886 | STATIC void | |
887 | xfs_destroy_mount_workqueues( | |
888 | struct xfs_mount *mp) | |
889 | { | |
579b62fa | 890 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d DC |
891 | destroy_workqueue(mp->m_log_workqueue); |
892 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 893 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
894 | destroy_workqueue(mp->m_data_workqueue); |
895 | destroy_workqueue(mp->m_unwritten_workqueue); | |
896 | } | |
897 | ||
9aa05000 DC |
898 | /* |
899 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
900 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
901 | * for IO to complete so that we effectively throttle multiple callers to the | |
902 | * rate at which IO is completing. | |
903 | */ | |
904 | void | |
905 | xfs_flush_inodes( | |
906 | struct xfs_mount *mp) | |
907 | { | |
908 | struct super_block *sb = mp->m_super; | |
909 | ||
910 | if (down_read_trylock(&sb->s_umount)) { | |
0dc83bd3 | 911 | sync_inodes_sb(sb); |
9aa05000 DC |
912 | up_read(&sb->s_umount); |
913 | } | |
914 | } | |
915 | ||
bf904248 | 916 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 917 | STATIC struct inode * |
a50cd269 | 918 | xfs_fs_alloc_inode( |
1da177e4 LT |
919 | struct super_block *sb) |
920 | { | |
bf904248 | 921 | BUG(); |
493dca61 | 922 | return NULL; |
1da177e4 LT |
923 | } |
924 | ||
bf904248 | 925 | /* |
99fa8cb3 DC |
926 | * Now that the generic code is guaranteed not to be accessing |
927 | * the linux inode, we can reclaim the inode. | |
bf904248 | 928 | */ |
1da177e4 | 929 | STATIC void |
a50cd269 | 930 | xfs_fs_destroy_inode( |
848ce8f7 | 931 | struct inode *inode) |
1da177e4 | 932 | { |
848ce8f7 CH |
933 | struct xfs_inode *ip = XFS_I(inode); |
934 | ||
cca28fb8 | 935 | trace_xfs_destroy_inode(ip); |
99fa8cb3 DC |
936 | |
937 | XFS_STATS_INC(vn_reclaim); | |
848ce8f7 | 938 | |
848ce8f7 CH |
939 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
940 | ||
941 | /* | |
942 | * We should never get here with one of the reclaim flags already set. | |
943 | */ | |
944 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
945 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
946 | ||
947 | /* | |
57817c68 DC |
948 | * We always use background reclaim here because even if the |
949 | * inode is clean, it still may be under IO and hence we have | |
950 | * to take the flush lock. The background reclaim path handles | |
951 | * this more efficiently than we can here, so simply let background | |
952 | * reclaim tear down all inodes. | |
848ce8f7 | 953 | */ |
57817c68 | 954 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
955 | } |
956 | ||
07c8f675 DC |
957 | /* |
958 | * Slab object creation initialisation for the XFS inode. | |
959 | * This covers only the idempotent fields in the XFS inode; | |
960 | * all other fields need to be initialised on allocation | |
b595076a | 961 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
962 | * fields in the xfs inode that left in the initialise state |
963 | * when freeing the inode. | |
964 | */ | |
bf904248 DC |
965 | STATIC void |
966 | xfs_fs_inode_init_once( | |
07c8f675 DC |
967 | void *inode) |
968 | { | |
969 | struct xfs_inode *ip = inode; | |
970 | ||
971 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
972 | |
973 | /* vfs inode */ | |
974 | inode_init_once(VFS_I(ip)); | |
975 | ||
976 | /* xfs inode */ | |
07c8f675 DC |
977 | atomic_set(&ip->i_pincount, 0); |
978 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
979 | |
980 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
981 | "xfsino", ip->i_ino); | |
07c8f675 DC |
982 | } |
983 | ||
1da177e4 | 984 | STATIC void |
b57922d9 | 985 | xfs_fs_evict_inode( |
1da177e4 LT |
986 | struct inode *inode) |
987 | { | |
1543d79c | 988 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 989 | |
4f59af75 CH |
990 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
991 | ||
b57922d9 | 992 | trace_xfs_evict_inode(ip); |
cca28fb8 | 993 | |
91b0abe3 | 994 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 995 | clear_inode(inode); |
99fa8cb3 DC |
996 | XFS_STATS_INC(vn_rele); |
997 | XFS_STATS_INC(vn_remove); | |
998 | XFS_STATS_DEC(vn_active); | |
999 | ||
1000 | xfs_inactive(ip); | |
56d433e4 | 1001 | } |
1da177e4 | 1002 | |
5132ba8f DC |
1003 | /* |
1004 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
1005 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
1006 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
1007 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
1008 | * we drop the final reference on. | |
1009 | */ | |
1010 | STATIC int | |
1011 | xfs_fs_drop_inode( | |
1012 | struct inode *inode) | |
1013 | { | |
1014 | struct xfs_inode *ip = XFS_I(inode); | |
1015 | ||
1016 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1017 | } | |
1018 | ||
a738159d CH |
1019 | STATIC void |
1020 | xfs_free_fsname( | |
1021 | struct xfs_mount *mp) | |
1022 | { | |
1023 | kfree(mp->m_fsname); | |
1024 | kfree(mp->m_rtname); | |
1025 | kfree(mp->m_logname); | |
1026 | } | |
1027 | ||
1da177e4 | 1028 | STATIC void |
a50cd269 | 1029 | xfs_fs_put_super( |
1da177e4 LT |
1030 | struct super_block *sb) |
1031 | { | |
745f6919 | 1032 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1033 | |
7e18530b DC |
1034 | xfs_filestream_unmount(mp); |
1035 | xfs_unmountfs(mp); | |
1036 | ||
6203300e | 1037 | xfs_freesb(mp); |
c962fb79 | 1038 | xfs_icsb_destroy_counters(mp); |
aa6bf01d | 1039 | xfs_destroy_mount_workqueues(mp); |
19f354d4 | 1040 | xfs_close_devices(mp); |
a738159d | 1041 | xfs_free_fsname(mp); |
c962fb79 | 1042 | kfree(mp); |
1da177e4 LT |
1043 | } |
1044 | ||
1da177e4 | 1045 | STATIC int |
69961a26 | 1046 | xfs_fs_sync_fs( |
1da177e4 LT |
1047 | struct super_block *sb, |
1048 | int wait) | |
1049 | { | |
745f6919 | 1050 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1051 | |
e893bffd | 1052 | /* |
34625c66 | 1053 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1054 | */ |
34625c66 | 1055 | if (!wait) |
69961a26 | 1056 | return 0; |
69961a26 | 1057 | |
34061f5c | 1058 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1059 | if (laptop_mode) { |
1da177e4 LT |
1060 | /* |
1061 | * The disk must be active because we're syncing. | |
f661f1e0 | 1062 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1063 | * active) instead of later (when it might not be). |
1064 | */ | |
f661f1e0 | 1065 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1066 | } |
1067 | ||
69961a26 | 1068 | return 0; |
1da177e4 LT |
1069 | } |
1070 | ||
1071 | STATIC int | |
a50cd269 | 1072 | xfs_fs_statfs( |
726c3342 | 1073 | struct dentry *dentry, |
1da177e4 LT |
1074 | struct kstatfs *statp) |
1075 | { | |
4ca488eb CH |
1076 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1077 | xfs_sb_t *sbp = &mp->m_sb; | |
7d095257 | 1078 | struct xfs_inode *ip = XFS_I(dentry->d_inode); |
4ca488eb CH |
1079 | __uint64_t fakeinos, id; |
1080 | xfs_extlen_t lsize; | |
2fe33661 | 1081 | __int64_t ffree; |
4ca488eb CH |
1082 | |
1083 | statp->f_type = XFS_SB_MAGIC; | |
1084 | statp->f_namelen = MAXNAMELEN - 1; | |
1085 | ||
1086 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1087 | statp->f_fsid.val[0] = (u32)id; | |
1088 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1089 | ||
d4d90b57 | 1090 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
4ca488eb CH |
1091 | |
1092 | spin_lock(&mp->m_sb_lock); | |
1093 | statp->f_bsize = sbp->sb_blocksize; | |
1094 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1095 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
1096 | statp->f_bfree = statp->f_bavail = | |
1097 | sbp->sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1098 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
4ca488eb CH |
1099 | statp->f_files = |
1100 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
1101 | if (mp->m_maxicount) | |
a19d9f88 CH |
1102 | statp->f_files = min_t(typeof(statp->f_files), |
1103 | statp->f_files, | |
1104 | mp->m_maxicount); | |
2fe33661 SB |
1105 | |
1106 | /* make sure statp->f_ffree does not underflow */ | |
1107 | ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
1108 | statp->f_ffree = max_t(__int64_t, ffree, 0); | |
1109 | ||
4ca488eb CH |
1110 | spin_unlock(&mp->m_sb_lock); |
1111 | ||
da5bf95e | 1112 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1113 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1114 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1115 | xfs_qm_statvfs(ip, statp); |
4ca488eb | 1116 | return 0; |
1da177e4 LT |
1117 | } |
1118 | ||
d5db0f97 ES |
1119 | STATIC void |
1120 | xfs_save_resvblks(struct xfs_mount *mp) | |
1121 | { | |
1122 | __uint64_t resblks = 0; | |
1123 | ||
1124 | mp->m_resblks_save = mp->m_resblks; | |
1125 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1126 | } | |
1127 | ||
1128 | STATIC void | |
1129 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1130 | { | |
1131 | __uint64_t resblks; | |
1132 | ||
1133 | if (mp->m_resblks_save) { | |
1134 | resblks = mp->m_resblks_save; | |
1135 | mp->m_resblks_save = 0; | |
1136 | } else | |
1137 | resblks = xfs_default_resblks(mp); | |
1138 | ||
1139 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1140 | } | |
1141 | ||
c7eea6f7 DC |
1142 | /* |
1143 | * Trigger writeback of all the dirty metadata in the file system. | |
1144 | * | |
1145 | * This ensures that the metadata is written to their location on disk rather | |
1146 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1147 | * there is no log replay required to write the inodes to disk - this is the |
1148 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1149 | * |
c75921a7 DC |
1150 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1151 | * it is started again when appropriate. | |
c7eea6f7 | 1152 | */ |
632b89e8 | 1153 | static void |
c7eea6f7 DC |
1154 | xfs_quiesce_attr( |
1155 | struct xfs_mount *mp) | |
1156 | { | |
1157 | int error = 0; | |
1158 | ||
1159 | /* wait for all modifications to complete */ | |
1160 | while (atomic_read(&mp->m_active_trans) > 0) | |
1161 | delay(100); | |
1162 | ||
1163 | /* force the log to unpin objects from the now complete transactions */ | |
1164 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1165 | ||
1166 | /* reclaim inodes to do any IO before the freeze completes */ | |
1167 | xfs_reclaim_inodes(mp, 0); | |
1168 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1169 | ||
c7eea6f7 DC |
1170 | /* Push the superblock and write an unmount record */ |
1171 | error = xfs_log_sbcount(mp); | |
1172 | if (error) | |
1173 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1174 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1175 | /* |
c75921a7 DC |
1176 | * Just warn here till VFS can correctly support |
1177 | * read-only remount without racing. | |
c7eea6f7 | 1178 | */ |
c75921a7 | 1179 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1180 | |
c75921a7 | 1181 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1182 | } |
1183 | ||
1da177e4 | 1184 | STATIC int |
a50cd269 | 1185 | xfs_fs_remount( |
1da177e4 LT |
1186 | struct super_block *sb, |
1187 | int *flags, | |
1188 | char *options) | |
1189 | { | |
745f6919 | 1190 | struct xfs_mount *mp = XFS_M(sb); |
9de67c3b | 1191 | xfs_sb_t *sbp = &mp->m_sb; |
62a877e3 CH |
1192 | substring_t args[MAX_OPT_ARGS]; |
1193 | char *p; | |
7884bc86 | 1194 | int error; |
1da177e4 | 1195 | |
02b9984d | 1196 | sync_filesystem(sb); |
62a877e3 CH |
1197 | while ((p = strsep(&options, ",")) != NULL) { |
1198 | int token; | |
bdd907ba | 1199 | |
62a877e3 CH |
1200 | if (!*p) |
1201 | continue; | |
48b62a1a | 1202 | |
62a877e3 CH |
1203 | token = match_token(p, tokens, args); |
1204 | switch (token) { | |
1205 | case Opt_barrier: | |
48b62a1a | 1206 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1207 | break; |
1208 | case Opt_nobarrier: | |
48b62a1a | 1209 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1210 | break; |
c3a58fec | 1211 | case Opt_inode64: |
9de67c3b | 1212 | mp->m_maxagi = xfs_set_inode64(mp, sbp->sb_agcount); |
c3a58fec | 1213 | break; |
2ea03929 | 1214 | case Opt_inode32: |
9de67c3b | 1215 | mp->m_maxagi = xfs_set_inode32(mp, sbp->sb_agcount); |
2ea03929 | 1216 | break; |
62a877e3 | 1217 | default: |
6efdf281 CH |
1218 | /* |
1219 | * Logically we would return an error here to prevent | |
1220 | * users from believing they might have changed | |
1221 | * mount options using remount which can't be changed. | |
1222 | * | |
1223 | * But unfortunately mount(8) adds all options from | |
1224 | * mtab and fstab to the mount arguments in some cases | |
1225 | * so we can't blindly reject options, but have to | |
1226 | * check for each specified option if it actually | |
1227 | * differs from the currently set option and only | |
1228 | * reject it if that's the case. | |
1229 | * | |
1230 | * Until that is implemented we return success for | |
1231 | * every remount request, and silently ignore all | |
1232 | * options that we can't actually change. | |
1233 | */ | |
1234 | #if 0 | |
4f10700a | 1235 | xfs_info(mp, |
08e96e1a | 1236 | "mount option \"%s\" not supported for remount", p); |
62a877e3 | 1237 | return -EINVAL; |
6efdf281 | 1238 | #else |
6c5e51da | 1239 | break; |
6efdf281 | 1240 | #endif |
48b62a1a | 1241 | } |
62a877e3 CH |
1242 | } |
1243 | ||
7884bc86 | 1244 | /* ro -> rw */ |
62a877e3 CH |
1245 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
1246 | mp->m_flags &= ~XFS_MOUNT_RDONLY; | |
7884bc86 CH |
1247 | |
1248 | /* | |
1249 | * If this is the first remount to writeable state we | |
1250 | * might have some superblock changes to update. | |
1251 | */ | |
1252 | if (mp->m_update_flags) { | |
1253 | error = xfs_mount_log_sb(mp, mp->m_update_flags); | |
1254 | if (error) { | |
4f10700a | 1255 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1256 | return error; |
1257 | } | |
1258 | mp->m_update_flags = 0; | |
1259 | } | |
cbe132a8 DC |
1260 | |
1261 | /* | |
1262 | * Fill out the reserve pool if it is empty. Use the stashed | |
1263 | * value if it is non-zero, otherwise go with the default. | |
1264 | */ | |
d5db0f97 | 1265 | xfs_restore_resvblks(mp); |
f661f1e0 | 1266 | xfs_log_work_queue(mp); |
62a877e3 CH |
1267 | } |
1268 | ||
1269 | /* rw -> ro */ | |
1270 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1271 | /* |
34061f5c DC |
1272 | * Before we sync the metadata, we need to free up the reserve |
1273 | * block pool so that the used block count in the superblock on | |
1274 | * disk is correct at the end of the remount. Stash the current | |
1275 | * reserve pool size so that if we get remounted rw, we can | |
1276 | * return it to the same size. | |
cbe132a8 | 1277 | */ |
d5db0f97 | 1278 | xfs_save_resvblks(mp); |
76bf105c | 1279 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1280 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1281 | } | |
1282 | ||
62a877e3 | 1283 | return 0; |
1da177e4 LT |
1284 | } |
1285 | ||
9909c4aa CH |
1286 | /* |
1287 | * Second stage of a freeze. The data is already frozen so we only | |
76bf105c | 1288 | * need to take care of the metadata. Once that's done write a dummy |
9909c4aa CH |
1289 | * record to dirty the log in case of a crash while frozen. |
1290 | */ | |
c4be0c1d TS |
1291 | STATIC int |
1292 | xfs_fs_freeze( | |
1da177e4 LT |
1293 | struct super_block *sb) |
1294 | { | |
9909c4aa CH |
1295 | struct xfs_mount *mp = XFS_M(sb); |
1296 | ||
d5db0f97 | 1297 | xfs_save_resvblks(mp); |
76bf105c | 1298 | xfs_quiesce_attr(mp); |
2451337d | 1299 | return xfs_fs_log_dummy(mp); |
1da177e4 LT |
1300 | } |
1301 | ||
d5db0f97 ES |
1302 | STATIC int |
1303 | xfs_fs_unfreeze( | |
1304 | struct super_block *sb) | |
1305 | { | |
1306 | struct xfs_mount *mp = XFS_M(sb); | |
1307 | ||
1308 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1309 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1310 | return 0; |
1311 | } | |
1312 | ||
1da177e4 | 1313 | STATIC int |
a50cd269 | 1314 | xfs_fs_show_options( |
1da177e4 | 1315 | struct seq_file *m, |
34c80b1d | 1316 | struct dentry *root) |
1da177e4 | 1317 | { |
2451337d | 1318 | return xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1319 | } |
1320 | ||
f8f15e42 CH |
1321 | /* |
1322 | * This function fills in xfs_mount_t fields based on mount args. | |
1323 | * Note: the superblock _has_ now been read in. | |
1324 | */ | |
1325 | STATIC int | |
1326 | xfs_finish_flags( | |
f8f15e42 CH |
1327 | struct xfs_mount *mp) |
1328 | { | |
1329 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1330 | ||
025dfdaf | 1331 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1332 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1333 | if (mp->m_logbsize <= 0 && |
1334 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1335 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1336 | } else if (mp->m_logbsize > 0 && |
1337 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1338 | xfs_warn(mp, |
1339 | "logbuf size must be greater than or equal to log stripe size"); | |
2451337d | 1340 | return -EINVAL; |
f8f15e42 CH |
1341 | } |
1342 | } else { | |
1343 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1344 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1345 | xfs_warn(mp, |
1346 | "logbuf size for version 1 logs must be 16K or 32K"); | |
2451337d | 1347 | return -EINVAL; |
f8f15e42 CH |
1348 | } |
1349 | } | |
1350 | ||
d3eaace8 DC |
1351 | /* |
1352 | * V5 filesystems always use attr2 format for attributes. | |
1353 | */ | |
1354 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1355 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
1356 | xfs_warn(mp, | |
1357 | "Cannot mount a V5 filesystem as %s. %s is always enabled for V5 filesystems.", | |
1358 | MNTOPT_NOATTR2, MNTOPT_ATTR2); | |
2451337d | 1359 | return -EINVAL; |
d3eaace8 DC |
1360 | } |
1361 | ||
f8f15e42 CH |
1362 | /* |
1363 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1364 | * told by noattr2 to turn it off | |
1365 | */ | |
1366 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1367 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1368 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1369 | ||
1370 | /* | |
1371 | * prohibit r/w mounts of read-only filesystems | |
1372 | */ | |
1373 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1374 | xfs_warn(mp, |
1375 | "cannot mount a read-only filesystem as read-write"); | |
2451337d | 1376 | return -EROFS; |
f8f15e42 CH |
1377 | } |
1378 | ||
d892d586 CS |
1379 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1380 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1381 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1382 | xfs_warn(mp, | |
1383 | "Super block does not support project and group quota together"); | |
2451337d | 1384 | return -EINVAL; |
d892d586 CS |
1385 | } |
1386 | ||
f8f15e42 CH |
1387 | return 0; |
1388 | } | |
1389 | ||
1da177e4 | 1390 | STATIC int |
a50cd269 | 1391 | xfs_fs_fill_super( |
1da177e4 LT |
1392 | struct super_block *sb, |
1393 | void *data, | |
1394 | int silent) | |
1395 | { | |
f3dcc13f | 1396 | struct inode *root; |
745f6919 | 1397 | struct xfs_mount *mp = NULL; |
2451337d | 1398 | int flags = 0, error = -ENOMEM; |
bdd907ba | 1399 | |
c962fb79 CH |
1400 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1401 | if (!mp) | |
9d565ffa | 1402 | goto out; |
1da177e4 | 1403 | |
c962fb79 | 1404 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1405 | mutex_init(&mp->m_growlock); |
1406 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1407 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1408 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
74394496 | 1409 | |
b267ce99 CH |
1410 | mp->m_super = sb; |
1411 | sb->s_fs_info = mp; | |
1da177e4 | 1412 | |
288699fe | 1413 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1414 | if (error) |
9d565ffa | 1415 | goto out_free_fsname; |
1da177e4 LT |
1416 | |
1417 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1418 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1419 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1420 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1421 | sb->s_qcop = &xfs_quotactl_operations; |
fcafb71b | 1422 | #endif |
a50cd269 | 1423 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1424 | |
9d565ffa | 1425 | if (silent) |
f8f15e42 CH |
1426 | flags |= XFS_MFSI_QUIET; |
1427 | ||
9d565ffa | 1428 | error = xfs_open_devices(mp); |
19f354d4 | 1429 | if (error) |
288699fe | 1430 | goto out_free_fsname; |
f8f15e42 | 1431 | |
2451337d | 1432 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1433 | if (error) |
1434 | goto out_close_devices; | |
c962fb79 | 1435 | |
2451337d | 1436 | error = xfs_icsb_init_counters(mp); |
aa6bf01d CH |
1437 | if (error) |
1438 | goto out_destroy_workqueues; | |
1439 | ||
f8f15e42 CH |
1440 | error = xfs_readsb(mp, flags); |
1441 | if (error) | |
9d565ffa CH |
1442 | goto out_destroy_counters; |
1443 | ||
1444 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1445 | if (error) |
effa2eda | 1446 | goto out_free_sb; |
f8f15e42 | 1447 | |
e34b562c | 1448 | error = xfs_setup_devices(mp); |
19f354d4 | 1449 | if (error) |
effa2eda | 1450 | goto out_free_sb; |
f8f15e42 | 1451 | |
f8f15e42 CH |
1452 | error = xfs_filestream_mount(mp); |
1453 | if (error) | |
effa2eda | 1454 | goto out_free_sb; |
f8f15e42 | 1455 | |
704b2907 DC |
1456 | /* |
1457 | * we must configure the block size in the superblock before we run the | |
1458 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1459 | */ |
4ca488eb CH |
1460 | sb->s_magic = XFS_SB_MAGIC; |
1461 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1462 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1463 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1464 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1465 | sb->s_time_gran = 1; |
1466 | set_posix_acl_flag(sb); | |
1467 | ||
dc037ad7 DC |
1468 | /* version 5 superblocks support inode version counters. */ |
1469 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
1470 | sb->s_flags |= MS_I_VERSION; | |
1471 | ||
8a00ebe4 | 1472 | error = xfs_mountfs(mp); |
2bcf6e97 | 1473 | if (error) |
7e18530b | 1474 | goto out_filestream_unmount; |
704b2907 | 1475 | |
01651646 | 1476 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1477 | if (!root) { |
2451337d | 1478 | error = -ENOENT; |
8a00ebe4 | 1479 | goto out_unmount; |
cbc89dcf | 1480 | } |
48fde701 | 1481 | sb->s_root = d_make_root(root); |
f3dcc13f | 1482 | if (!sb->s_root) { |
2451337d | 1483 | error = -ENOMEM; |
8a00ebe4 | 1484 | goto out_unmount; |
1da177e4 | 1485 | } |
74394496 | 1486 | |
1da177e4 | 1487 | return 0; |
33c7a2bc | 1488 | |
7e18530b | 1489 | out_filestream_unmount: |
120226c1 | 1490 | xfs_filestream_unmount(mp); |
effa2eda CH |
1491 | out_free_sb: |
1492 | xfs_freesb(mp); | |
9d565ffa | 1493 | out_destroy_counters: |
c962fb79 | 1494 | xfs_icsb_destroy_counters(mp); |
aa6bf01d CH |
1495 | out_destroy_workqueues: |
1496 | xfs_destroy_mount_workqueues(mp); | |
61ba35de | 1497 | out_close_devices: |
19f354d4 | 1498 | xfs_close_devices(mp); |
9d565ffa CH |
1499 | out_free_fsname: |
1500 | xfs_free_fsname(mp); | |
c962fb79 | 1501 | kfree(mp); |
9d565ffa | 1502 | out: |
2451337d | 1503 | return error; |
f8f15e42 | 1504 | |
2bcf6e97 | 1505 | out_unmount: |
e48ad316 | 1506 | xfs_filestream_unmount(mp); |
19f354d4 | 1507 | xfs_unmountfs(mp); |
6203300e | 1508 | goto out_free_sb; |
1da177e4 LT |
1509 | } |
1510 | ||
152a0836 AV |
1511 | STATIC struct dentry * |
1512 | xfs_fs_mount( | |
1da177e4 LT |
1513 | struct file_system_type *fs_type, |
1514 | int flags, | |
1515 | const char *dev_name, | |
152a0836 | 1516 | void *data) |
1da177e4 | 1517 | { |
152a0836 | 1518 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1519 | } |
1520 | ||
0a234c6d | 1521 | static long |
8daaa831 | 1522 | xfs_fs_nr_cached_objects( |
9b17c623 DC |
1523 | struct super_block *sb, |
1524 | int nid) | |
8daaa831 DC |
1525 | { |
1526 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1527 | } | |
1528 | ||
0a234c6d | 1529 | static long |
8daaa831 DC |
1530 | xfs_fs_free_cached_objects( |
1531 | struct super_block *sb, | |
9b17c623 DC |
1532 | long nr_to_scan, |
1533 | int nid) | |
8daaa831 | 1534 | { |
0a234c6d | 1535 | return xfs_reclaim_inodes_nr(XFS_M(sb), nr_to_scan); |
8daaa831 DC |
1536 | } |
1537 | ||
b87221de | 1538 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1539 | .alloc_inode = xfs_fs_alloc_inode, |
1540 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1541 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1542 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1543 | .put_super = xfs_fs_put_super, |
69961a26 | 1544 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1545 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1546 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1547 | .statfs = xfs_fs_statfs, |
1548 | .remount_fs = xfs_fs_remount, | |
1549 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1550 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1551 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1552 | }; |
1553 | ||
5085b607 | 1554 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1555 | .owner = THIS_MODULE, |
1556 | .name = "xfs", | |
152a0836 | 1557 | .mount = xfs_fs_mount, |
1da177e4 LT |
1558 | .kill_sb = kill_block_super, |
1559 | .fs_flags = FS_REQUIRES_DEV, | |
1560 | }; | |
7f78e035 | 1561 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1562 | |
9f8868ff CH |
1563 | STATIC int __init |
1564 | xfs_init_zones(void) | |
1565 | { | |
9f8868ff CH |
1566 | |
1567 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1568 | if (!xfs_ioend_zone) | |
bf904248 | 1569 | goto out; |
9f8868ff CH |
1570 | |
1571 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1572 | xfs_ioend_zone); | |
1573 | if (!xfs_ioend_pool) | |
1574 | goto out_destroy_ioend_zone; | |
1575 | ||
1576 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1577 | "xfs_log_ticket"); | |
1578 | if (!xfs_log_ticket_zone) | |
1579 | goto out_destroy_ioend_pool; | |
1580 | ||
1581 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1582 | "xfs_bmap_free_item"); | |
1583 | if (!xfs_bmap_free_item_zone) | |
1584 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1585 | |
9f8868ff CH |
1586 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1587 | "xfs_btree_cur"); | |
1588 | if (!xfs_btree_cur_zone) | |
1589 | goto out_destroy_bmap_free_item_zone; | |
1590 | ||
1591 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1592 | "xfs_da_state"); | |
1593 | if (!xfs_da_state_zone) | |
1594 | goto out_destroy_btree_cur_zone; | |
1595 | ||
9f8868ff CH |
1596 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1597 | if (!xfs_ifork_zone) | |
1d9025e5 | 1598 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1599 | |
1600 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1601 | if (!xfs_trans_zone) | |
1602 | goto out_destroy_ifork_zone; | |
1603 | ||
e98c414f CH |
1604 | xfs_log_item_desc_zone = |
1605 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1606 | "xfs_log_item_desc"); | |
1607 | if (!xfs_log_item_desc_zone) | |
1608 | goto out_destroy_trans_zone; | |
1609 | ||
9f8868ff CH |
1610 | /* |
1611 | * The size of the zone allocated buf log item is the maximum | |
1612 | * size possible under XFS. This wastes a little bit of memory, | |
1613 | * but it is much faster. | |
1614 | */ | |
77c1a08f DC |
1615 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1616 | "xfs_buf_item"); | |
9f8868ff | 1617 | if (!xfs_buf_item_zone) |
e98c414f | 1618 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1619 | |
1620 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1621 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1622 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1623 | if (!xfs_efd_zone) | |
1624 | goto out_destroy_buf_item_zone; | |
1625 | ||
1626 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1627 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1628 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1629 | if (!xfs_efi_zone) | |
1630 | goto out_destroy_efd_zone; | |
1631 | ||
1632 | xfs_inode_zone = | |
1633 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
bf904248 DC |
1634 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD, |
1635 | xfs_fs_inode_init_once); | |
9f8868ff CH |
1636 | if (!xfs_inode_zone) |
1637 | goto out_destroy_efi_zone; | |
1638 | ||
1639 | xfs_ili_zone = | |
1640 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1641 | KM_ZONE_SPREAD, NULL); | |
1642 | if (!xfs_ili_zone) | |
1643 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1644 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1645 | "xfs_icr"); | |
1646 | if (!xfs_icreate_zone) | |
1647 | goto out_destroy_ili_zone; | |
9f8868ff | 1648 | |
9f8868ff CH |
1649 | return 0; |
1650 | ||
3ebe7d2d DC |
1651 | out_destroy_ili_zone: |
1652 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1653 | out_destroy_inode_zone: |
1654 | kmem_zone_destroy(xfs_inode_zone); | |
1655 | out_destroy_efi_zone: | |
1656 | kmem_zone_destroy(xfs_efi_zone); | |
1657 | out_destroy_efd_zone: | |
1658 | kmem_zone_destroy(xfs_efd_zone); | |
1659 | out_destroy_buf_item_zone: | |
1660 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1661 | out_destroy_log_item_desc_zone: |
1662 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1663 | out_destroy_trans_zone: |
1664 | kmem_zone_destroy(xfs_trans_zone); | |
1665 | out_destroy_ifork_zone: | |
1666 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1667 | out_destroy_da_state_zone: |
1668 | kmem_zone_destroy(xfs_da_state_zone); | |
1669 | out_destroy_btree_cur_zone: | |
1670 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1671 | out_destroy_bmap_free_item_zone: | |
1672 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1673 | out_destroy_log_ticket_zone: | |
1674 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1675 | out_destroy_ioend_pool: | |
1676 | mempool_destroy(xfs_ioend_pool); | |
1677 | out_destroy_ioend_zone: | |
1678 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1679 | out: |
1680 | return -ENOMEM; | |
1681 | } | |
1682 | ||
1683 | STATIC void | |
1684 | xfs_destroy_zones(void) | |
1685 | { | |
8c0a8537 KS |
1686 | /* |
1687 | * Make sure all delayed rcu free are flushed before we | |
1688 | * destroy caches. | |
1689 | */ | |
1690 | rcu_barrier(); | |
3ebe7d2d | 1691 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
1692 | kmem_zone_destroy(xfs_ili_zone); |
1693 | kmem_zone_destroy(xfs_inode_zone); | |
1694 | kmem_zone_destroy(xfs_efi_zone); | |
1695 | kmem_zone_destroy(xfs_efd_zone); | |
1696 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1697 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1698 | kmem_zone_destroy(xfs_trans_zone); |
1699 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1700 | kmem_zone_destroy(xfs_da_state_zone); |
1701 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1702 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1703 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1704 | mempool_destroy(xfs_ioend_pool); | |
1705 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1706 | |
1707 | } | |
1da177e4 | 1708 | |
0bf6a5bd DC |
1709 | STATIC int __init |
1710 | xfs_init_workqueues(void) | |
1711 | { | |
c999a223 DC |
1712 | /* |
1713 | * The allocation workqueue can be used in memory reclaim situations | |
1714 | * (writepage path), and parallelism is only limited by the number of | |
1715 | * AGs in all the filesystems mounted. Hence use the default large | |
1716 | * max_active value for this workqueue. | |
1717 | */ | |
8018ec08 BF |
1718 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
1719 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0); | |
c999a223 | 1720 | if (!xfs_alloc_wq) |
5889608d | 1721 | return -ENOMEM; |
c999a223 | 1722 | |
0bf6a5bd | 1723 | return 0; |
0bf6a5bd DC |
1724 | } |
1725 | ||
39411f81 | 1726 | STATIC void |
0bf6a5bd DC |
1727 | xfs_destroy_workqueues(void) |
1728 | { | |
c999a223 | 1729 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1730 | } |
1731 | ||
1da177e4 | 1732 | STATIC int __init |
9f8868ff | 1733 | init_xfs_fs(void) |
1da177e4 LT |
1734 | { |
1735 | int error; | |
1da177e4 | 1736 | |
65795910 CH |
1737 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1738 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1739 | |
9f8868ff | 1740 | xfs_dir_startup(); |
1da177e4 | 1741 | |
8758280f | 1742 | error = xfs_init_zones(); |
9f8868ff CH |
1743 | if (error) |
1744 | goto out; | |
1745 | ||
0bf6a5bd | 1746 | error = xfs_init_workqueues(); |
9f8868ff | 1747 | if (error) |
0b1b213f | 1748 | goto out_destroy_zones; |
9f8868ff | 1749 | |
0bf6a5bd DC |
1750 | error = xfs_mru_cache_init(); |
1751 | if (error) | |
1752 | goto out_destroy_wq; | |
1753 | ||
ce8e922c | 1754 | error = xfs_buf_init(); |
9f8868ff | 1755 | if (error) |
1919adda | 1756 | goto out_mru_cache_uninit; |
9f8868ff CH |
1757 | |
1758 | error = xfs_init_procfs(); | |
1759 | if (error) | |
1760 | goto out_buf_terminate; | |
1761 | ||
1762 | error = xfs_sysctl_register(); | |
1763 | if (error) | |
1764 | goto out_cleanup_procfs; | |
1da177e4 | 1765 | |
3d871226 BF |
1766 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
1767 | if (!xfs_kset) { | |
1768 | error = -ENOMEM; | |
1769 | goto out_sysctl_unregister;; | |
1770 | } | |
1771 | ||
a05931ce CH |
1772 | error = xfs_qm_init(); |
1773 | if (error) | |
3d871226 | 1774 | goto out_kset_unregister; |
1da177e4 LT |
1775 | |
1776 | error = register_filesystem(&xfs_fs_type); | |
1777 | if (error) | |
a05931ce | 1778 | goto out_qm_exit; |
1da177e4 LT |
1779 | return 0; |
1780 | ||
a05931ce CH |
1781 | out_qm_exit: |
1782 | xfs_qm_exit(); | |
3d871226 BF |
1783 | out_kset_unregister: |
1784 | kset_unregister(xfs_kset); | |
9f8868ff CH |
1785 | out_sysctl_unregister: |
1786 | xfs_sysctl_unregister(); | |
1787 | out_cleanup_procfs: | |
1788 | xfs_cleanup_procfs(); | |
1789 | out_buf_terminate: | |
ce8e922c | 1790 | xfs_buf_terminate(); |
9f8868ff CH |
1791 | out_mru_cache_uninit: |
1792 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1793 | out_destroy_wq: |
1794 | xfs_destroy_workqueues(); | |
9f8868ff | 1795 | out_destroy_zones: |
8758280f | 1796 | xfs_destroy_zones(); |
9f8868ff | 1797 | out: |
1da177e4 LT |
1798 | return error; |
1799 | } | |
1800 | ||
1801 | STATIC void __exit | |
9f8868ff | 1802 | exit_xfs_fs(void) |
1da177e4 | 1803 | { |
a05931ce | 1804 | xfs_qm_exit(); |
1da177e4 | 1805 | unregister_filesystem(&xfs_fs_type); |
3d871226 | 1806 | kset_unregister(xfs_kset); |
9f8868ff CH |
1807 | xfs_sysctl_unregister(); |
1808 | xfs_cleanup_procfs(); | |
ce8e922c | 1809 | xfs_buf_terminate(); |
9f8868ff | 1810 | xfs_mru_cache_uninit(); |
0bf6a5bd | 1811 | xfs_destroy_workqueues(); |
8758280f | 1812 | xfs_destroy_zones(); |
1da177e4 LT |
1813 | } |
1814 | ||
1815 | module_init(init_xfs_fs); | |
1816 | module_exit(exit_xfs_fs); | |
1817 | ||
1818 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1819 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1820 | MODULE_LICENSE("GPL"); |