Commit | Line | Data |
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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" | |
1da177e4 | 24 | #include "xfs_sb.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
57062787 | 26 | #include "xfs_da_format.h" |
1da177e4 | 27 | #include "xfs_inode.h" |
a844f451 | 28 | #include "xfs_btree.h" |
1da177e4 | 29 | #include "xfs_bmap.h" |
a4fbe6ab | 30 | #include "xfs_alloc.h" |
1da177e4 | 31 | #include "xfs_error.h" |
9909c4aa | 32 | #include "xfs_fsops.h" |
239880ef | 33 | #include "xfs_trans.h" |
1da177e4 | 34 | #include "xfs_buf_item.h" |
239880ef | 35 | #include "xfs_log.h" |
a67d7c5f | 36 | #include "xfs_log_priv.h" |
9f8868ff | 37 | #include "xfs_da_btree.h" |
2b9ab5ab | 38 | #include "xfs_dir2.h" |
9f8868ff CH |
39 | #include "xfs_extfree_item.h" |
40 | #include "xfs_mru_cache.h" | |
41 | #include "xfs_inode_item.h" | |
6d8b79cf | 42 | #include "xfs_icache.h" |
0b1b213f | 43 | #include "xfs_trace.h" |
3ebe7d2d | 44 | #include "xfs_icreate_item.h" |
a4fbe6ab DC |
45 | #include "xfs_filestream.h" |
46 | #include "xfs_quota.h" | |
65b65735 | 47 | #include "xfs_sysfs.h" |
30cbc591 | 48 | #include "xfs_ondisk.h" |
1da177e4 LT |
49 | |
50 | #include <linux/namei.h> | |
51 | #include <linux/init.h> | |
5a0e3ad6 | 52 | #include <linux/slab.h> |
1da177e4 | 53 | #include <linux/mount.h> |
0829c360 | 54 | #include <linux/mempool.h> |
1da177e4 | 55 | #include <linux/writeback.h> |
4df08c52 | 56 | #include <linux/kthread.h> |
7dfb7103 | 57 | #include <linux/freezer.h> |
62a877e3 | 58 | #include <linux/parser.h> |
1da177e4 | 59 | |
b87221de | 60 | static const struct super_operations xfs_super_operations; |
7989cb8e | 61 | static kmem_zone_t *xfs_ioend_zone; |
0829c360 | 62 | mempool_t *xfs_ioend_pool; |
65b65735 | 63 | |
e3aed1a0 | 64 | static struct kset *xfs_kset; /* top-level xfs sysfs dir */ |
65b65735 BF |
65 | #ifdef DEBUG |
66 | static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ | |
67 | #endif | |
1da177e4 | 68 | |
62a877e3 CH |
69 | /* |
70 | * Table driven mount option parser. | |
62a877e3 CH |
71 | */ |
72 | enum { | |
2e74af0e ES |
73 | Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev, Opt_biosize, |
74 | Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid, | |
75 | Opt_mtpt, Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups, | |
76 | Opt_allocsize, Opt_norecovery, Opt_barrier, Opt_nobarrier, | |
77 | Opt_inode64, Opt_inode32, Opt_ikeep, Opt_noikeep, | |
78 | Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2, Opt_filestreams, | |
79 | Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota, Opt_prjquota, | |
80 | Opt_uquota, Opt_gquota, Opt_pquota, | |
81 | Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce, | |
82 | Opt_discard, Opt_nodiscard, Opt_dax, Opt_err, | |
62a877e3 CH |
83 | }; |
84 | ||
a447c093 | 85 | static const match_table_t tokens = { |
2e74af0e ES |
86 | {Opt_logbufs, "logbufs=%u"}, /* number of XFS log buffers */ |
87 | {Opt_logbsize, "logbsize=%s"}, /* size of XFS log buffers */ | |
88 | {Opt_logdev, "logdev=%s"}, /* log device */ | |
89 | {Opt_rtdev, "rtdev=%s"}, /* realtime I/O device */ | |
90 | {Opt_biosize, "biosize=%u"}, /* log2 of preferred buffered io size */ | |
91 | {Opt_wsync, "wsync"}, /* safe-mode nfs compatible mount */ | |
92 | {Opt_noalign, "noalign"}, /* turn off stripe alignment */ | |
93 | {Opt_swalloc, "swalloc"}, /* turn on stripe width allocation */ | |
94 | {Opt_sunit, "sunit=%u"}, /* data volume stripe unit */ | |
95 | {Opt_swidth, "swidth=%u"}, /* data volume stripe width */ | |
96 | {Opt_nouuid, "nouuid"}, /* ignore filesystem UUID */ | |
97 | {Opt_mtpt, "mtpt"}, /* filesystem mount point */ | |
98 | {Opt_grpid, "grpid"}, /* group-ID from parent directory */ | |
99 | {Opt_nogrpid, "nogrpid"}, /* group-ID from current process */ | |
100 | {Opt_bsdgroups, "bsdgroups"}, /* group-ID from parent directory */ | |
101 | {Opt_sysvgroups,"sysvgroups"}, /* group-ID from current process */ | |
102 | {Opt_allocsize, "allocsize=%s"},/* preferred allocation size */ | |
103 | {Opt_norecovery,"norecovery"}, /* don't run XFS recovery */ | |
104 | {Opt_barrier, "barrier"}, /* use writer barriers for log write and | |
105 | * unwritten extent conversion */ | |
106 | {Opt_nobarrier, "nobarrier"}, /* .. disable */ | |
107 | {Opt_inode64, "inode64"}, /* inodes can be allocated anywhere */ | |
108 | {Opt_inode32, "inode32"}, /* inode allocation limited to | |
109 | * XFS_MAXINUMBER_32 */ | |
110 | {Opt_ikeep, "ikeep"}, /* do not free empty inode clusters */ | |
111 | {Opt_noikeep, "noikeep"}, /* free empty inode clusters */ | |
112 | {Opt_largeio, "largeio"}, /* report large I/O sizes in stat() */ | |
113 | {Opt_nolargeio, "nolargeio"}, /* do not report large I/O sizes | |
114 | * in stat(). */ | |
115 | {Opt_attr2, "attr2"}, /* do use attr2 attribute format */ | |
116 | {Opt_noattr2, "noattr2"}, /* do not use attr2 attribute format */ | |
117 | {Opt_filestreams,"filestreams"},/* use filestreams allocator */ | |
118 | {Opt_quota, "quota"}, /* disk quotas (user) */ | |
119 | {Opt_noquota, "noquota"}, /* no quotas */ | |
120 | {Opt_usrquota, "usrquota"}, /* user quota enabled */ | |
121 | {Opt_grpquota, "grpquota"}, /* group quota enabled */ | |
122 | {Opt_prjquota, "prjquota"}, /* project quota enabled */ | |
123 | {Opt_uquota, "uquota"}, /* user quota (IRIX variant) */ | |
124 | {Opt_gquota, "gquota"}, /* group quota (IRIX variant) */ | |
125 | {Opt_pquota, "pquota"}, /* project quota (IRIX variant) */ | |
126 | {Opt_uqnoenforce,"uqnoenforce"},/* user quota limit enforcement */ | |
127 | {Opt_gqnoenforce,"gqnoenforce"},/* group quota limit enforcement */ | |
128 | {Opt_pqnoenforce,"pqnoenforce"},/* project quota limit enforcement */ | |
129 | {Opt_qnoenforce, "qnoenforce"}, /* same as uqnoenforce */ | |
130 | {Opt_discard, "discard"}, /* Discard unused blocks */ | |
131 | {Opt_nodiscard, "nodiscard"}, /* Do not discard unused blocks */ | |
132 | ||
133 | {Opt_dax, "dax"}, /* Enable direct access to bdev pages */ | |
134 | {Opt_err, NULL}, | |
62a877e3 CH |
135 | }; |
136 | ||
137 | ||
a841b64d | 138 | STATIC int |
2e74af0e | 139 | suffix_kstrtoint(const substring_t *s, unsigned int base, int *res) |
a67d7c5f | 140 | { |
a17164e5 | 141 | int last, shift_left_factor = 0, _res; |
2e74af0e ES |
142 | char *value; |
143 | int ret = 0; | |
144 | ||
145 | value = match_strdup(s); | |
146 | if (!value) | |
147 | return -ENOMEM; | |
a67d7c5f DC |
148 | |
149 | last = strlen(value) - 1; | |
150 | if (value[last] == 'K' || value[last] == 'k') { | |
151 | shift_left_factor = 10; | |
152 | value[last] = '\0'; | |
153 | } | |
154 | if (value[last] == 'M' || value[last] == 'm') { | |
155 | shift_left_factor = 20; | |
156 | value[last] = '\0'; | |
157 | } | |
158 | if (value[last] == 'G' || value[last] == 'g') { | |
159 | shift_left_factor = 30; | |
160 | value[last] = '\0'; | |
161 | } | |
162 | ||
2e74af0e ES |
163 | if (kstrtoint(value, base, &_res)) |
164 | ret = -EINVAL; | |
165 | kfree(value); | |
a17164e5 | 166 | *res = _res << shift_left_factor; |
2e74af0e | 167 | return ret; |
a67d7c5f DC |
168 | } |
169 | ||
9d565ffa CH |
170 | /* |
171 | * This function fills in xfs_mount_t fields based on mount args. | |
172 | * Note: the superblock has _not_ yet been read in. | |
173 | * | |
174 | * Note that this function leaks the various device name allocations on | |
175 | * failure. The caller takes care of them. | |
a08ee40a ES |
176 | * |
177 | * *sb is const because this is also used to test options on the remount | |
178 | * path, and we don't want this to have any side effects at remount time. | |
179 | * Today this function does not change *sb, but just to future-proof... | |
9d565ffa | 180 | */ |
a67d7c5f DC |
181 | STATIC int |
182 | xfs_parseargs( | |
183 | struct xfs_mount *mp, | |
288699fe | 184 | char *options) |
a67d7c5f | 185 | { |
a08ee40a | 186 | const struct super_block *sb = mp->m_super; |
2e74af0e ES |
187 | char *p; |
188 | substring_t args[MAX_OPT_ARGS]; | |
9d565ffa CH |
189 | int dsunit = 0; |
190 | int dswidth = 0; | |
191 | int iosize = 0; | |
a5687787 | 192 | __uint8_t iosizelog = 0; |
9d565ffa | 193 | |
4f10700a DC |
194 | /* |
195 | * set up the mount name first so all the errors will refer to the | |
196 | * correct device. | |
197 | */ | |
198 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
199 | if (!mp->m_fsname) | |
2451337d | 200 | return -ENOMEM; |
4f10700a DC |
201 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
202 | ||
9d565ffa CH |
203 | /* |
204 | * Copy binary VFS mount flags we are interested in. | |
205 | */ | |
206 | if (sb->s_flags & MS_RDONLY) | |
207 | mp->m_flags |= XFS_MOUNT_RDONLY; | |
208 | if (sb->s_flags & MS_DIRSYNC) | |
209 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
210 | if (sb->s_flags & MS_SYNCHRONOUS) | |
211 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
212 | ||
213 | /* | |
214 | * Set some default flags that could be cleared by the mount option | |
215 | * parsing. | |
216 | */ | |
217 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
218 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
a67d7c5f | 219 | |
9d565ffa CH |
220 | /* |
221 | * These can be overridden by the mount option parsing. | |
222 | */ | |
223 | mp->m_logbufs = -1; | |
224 | mp->m_logbsize = -1; | |
a67d7c5f DC |
225 | |
226 | if (!options) | |
227 | goto done; | |
228 | ||
2e74af0e ES |
229 | while ((p = strsep(&options, ",")) != NULL) { |
230 | int token; | |
231 | ||
232 | if (!*p) | |
a67d7c5f | 233 | continue; |
a67d7c5f | 234 | |
2e74af0e ES |
235 | token = match_token(p, tokens, args); |
236 | switch (token) { | |
237 | case Opt_logbufs: | |
238 | if (match_int(args, &mp->m_logbufs)) | |
2451337d | 239 | return -EINVAL; |
2e74af0e ES |
240 | break; |
241 | case Opt_logbsize: | |
242 | if (suffix_kstrtoint(args, 10, &mp->m_logbsize)) | |
2451337d | 243 | return -EINVAL; |
2e74af0e ES |
244 | break; |
245 | case Opt_logdev: | |
246 | mp->m_logname = match_strdup(args); | |
9d565ffa | 247 | if (!mp->m_logname) |
2451337d | 248 | return -ENOMEM; |
2e74af0e ES |
249 | break; |
250 | case Opt_mtpt: | |
251 | xfs_warn(mp, "%s option not allowed on this system", p); | |
2451337d | 252 | return -EINVAL; |
2e74af0e ES |
253 | case Opt_rtdev: |
254 | mp->m_rtname = match_strdup(args); | |
9d565ffa | 255 | if (!mp->m_rtname) |
2451337d | 256 | return -ENOMEM; |
2e74af0e ES |
257 | break; |
258 | case Opt_allocsize: | |
259 | case Opt_biosize: | |
260 | if (suffix_kstrtoint(args, 10, &iosize)) | |
2451337d | 261 | return -EINVAL; |
9d565ffa | 262 | iosizelog = ffs(iosize) - 1; |
2e74af0e ES |
263 | break; |
264 | case Opt_grpid: | |
265 | case Opt_bsdgroups: | |
a67d7c5f | 266 | mp->m_flags |= XFS_MOUNT_GRPID; |
2e74af0e ES |
267 | break; |
268 | case Opt_nogrpid: | |
269 | case Opt_sysvgroups: | |
a67d7c5f | 270 | mp->m_flags &= ~XFS_MOUNT_GRPID; |
2e74af0e ES |
271 | break; |
272 | case Opt_wsync: | |
9d565ffa | 273 | mp->m_flags |= XFS_MOUNT_WSYNC; |
2e74af0e ES |
274 | break; |
275 | case Opt_norecovery: | |
9d565ffa | 276 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
2e74af0e ES |
277 | break; |
278 | case Opt_noalign: | |
9d565ffa | 279 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
2e74af0e ES |
280 | break; |
281 | case Opt_swalloc: | |
9d565ffa | 282 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
2e74af0e ES |
283 | break; |
284 | case Opt_sunit: | |
285 | if (match_int(args, &dsunit)) | |
2451337d | 286 | return -EINVAL; |
2e74af0e ES |
287 | break; |
288 | case Opt_swidth: | |
289 | if (match_int(args, &dswidth)) | |
2451337d | 290 | return -EINVAL; |
2e74af0e ES |
291 | break; |
292 | case Opt_inode32: | |
08bf5404 | 293 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
2e74af0e ES |
294 | break; |
295 | case Opt_inode64: | |
9d565ffa | 296 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
2e74af0e ES |
297 | break; |
298 | case Opt_nouuid: | |
9d565ffa | 299 | mp->m_flags |= XFS_MOUNT_NOUUID; |
2e74af0e ES |
300 | break; |
301 | case Opt_barrier: | |
9d565ffa | 302 | mp->m_flags |= XFS_MOUNT_BARRIER; |
2e74af0e ES |
303 | break; |
304 | case Opt_nobarrier: | |
9d565ffa | 305 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
2e74af0e ES |
306 | break; |
307 | case Opt_ikeep: | |
9d565ffa | 308 | mp->m_flags |= XFS_MOUNT_IKEEP; |
2e74af0e ES |
309 | break; |
310 | case Opt_noikeep: | |
9d565ffa | 311 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
2e74af0e ES |
312 | break; |
313 | case Opt_largeio: | |
9d565ffa | 314 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
2e74af0e ES |
315 | break; |
316 | case Opt_nolargeio: | |
9d565ffa | 317 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
2e74af0e ES |
318 | break; |
319 | case Opt_attr2: | |
9d565ffa | 320 | mp->m_flags |= XFS_MOUNT_ATTR2; |
2e74af0e ES |
321 | break; |
322 | case Opt_noattr2: | |
9d565ffa CH |
323 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
324 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
2e74af0e ES |
325 | break; |
326 | case Opt_filestreams: | |
9d565ffa | 327 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
2e74af0e ES |
328 | break; |
329 | case Opt_noquota: | |
4177af3a CS |
330 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
331 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
332 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
2e74af0e ES |
333 | break; |
334 | case Opt_quota: | |
335 | case Opt_uquota: | |
336 | case Opt_usrquota: | |
9d565ffa CH |
337 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
338 | XFS_UQUOTA_ENFD); | |
2e74af0e ES |
339 | break; |
340 | case Opt_qnoenforce: | |
341 | case Opt_uqnoenforce: | |
9d565ffa CH |
342 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
343 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
2e74af0e ES |
344 | break; |
345 | case Opt_pquota: | |
346 | case Opt_prjquota: | |
9d565ffa | 347 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 348 | XFS_PQUOTA_ENFD); |
2e74af0e ES |
349 | break; |
350 | case Opt_pqnoenforce: | |
9d565ffa | 351 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 352 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
2e74af0e ES |
353 | case Opt_gquota: |
354 | case Opt_grpquota: | |
9d565ffa | 355 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 356 | XFS_GQUOTA_ENFD); |
2e74af0e ES |
357 | break; |
358 | case Opt_gqnoenforce: | |
9d565ffa | 359 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 360 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
2e74af0e ES |
361 | break; |
362 | case Opt_discard: | |
e84661aa | 363 | mp->m_flags |= XFS_MOUNT_DISCARD; |
2e74af0e ES |
364 | break; |
365 | case Opt_nodiscard: | |
e84661aa | 366 | mp->m_flags &= ~XFS_MOUNT_DISCARD; |
2e74af0e | 367 | break; |
cbe4dab1 | 368 | #ifdef CONFIG_FS_DAX |
2e74af0e | 369 | case Opt_dax: |
cbe4dab1 | 370 | mp->m_flags |= XFS_MOUNT_DAX; |
2e74af0e | 371 | break; |
cbe4dab1 | 372 | #endif |
2e74af0e ES |
373 | default: |
374 | xfs_warn(mp, "unknown mount option [%s].", p); | |
2451337d | 375 | return -EINVAL; |
a67d7c5f DC |
376 | } |
377 | } | |
378 | ||
9d565ffa CH |
379 | /* |
380 | * no recovery flag requires a read-only mount | |
381 | */ | |
382 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
383 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 384 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 385 | return -EINVAL; |
a67d7c5f DC |
386 | } |
387 | ||
9d565ffa | 388 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
389 | xfs_warn(mp, |
390 | "sunit and swidth options incompatible with the noalign option"); | |
2451337d | 391 | return -EINVAL; |
a67d7c5f DC |
392 | } |
393 | ||
7d095257 CH |
394 | #ifndef CONFIG_XFS_QUOTA |
395 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 396 | xfs_warn(mp, "quota support not available in this kernel."); |
2451337d | 397 | return -EINVAL; |
7d095257 CH |
398 | } |
399 | #endif | |
400 | ||
a67d7c5f | 401 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 402 | xfs_warn(mp, "sunit and swidth must be specified together"); |
2451337d | 403 | return -EINVAL; |
a67d7c5f DC |
404 | } |
405 | ||
406 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
407 | xfs_warn(mp, |
408 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f | 409 | dswidth, dsunit); |
2451337d | 410 | return -EINVAL; |
a67d7c5f DC |
411 | } |
412 | ||
9d565ffa | 413 | done: |
39a45d84 | 414 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
415 | /* |
416 | * At this point the superblock has not been read | |
417 | * in, therefore we do not know the block size. | |
418 | * Before the mount call ends we will convert | |
419 | * these to FSBs. | |
420 | */ | |
39a45d84 JL |
421 | mp->m_dalign = dsunit; |
422 | mp->m_swidth = dswidth; | |
9d565ffa CH |
423 | } |
424 | ||
425 | if (mp->m_logbufs != -1 && | |
426 | mp->m_logbufs != 0 && | |
427 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
428 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 429 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa | 430 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
2451337d | 431 | return -EINVAL; |
9d565ffa CH |
432 | } |
433 | if (mp->m_logbsize != -1 && | |
434 | mp->m_logbsize != 0 && | |
435 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
436 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
437 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
438 | xfs_warn(mp, |
439 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa | 440 | mp->m_logbsize); |
2451337d | 441 | return -EINVAL; |
9d565ffa CH |
442 | } |
443 | ||
9d565ffa CH |
444 | if (iosizelog) { |
445 | if (iosizelog > XFS_MAX_IO_LOG || | |
446 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 447 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
448 | iosizelog, XFS_MIN_IO_LOG, |
449 | XFS_MAX_IO_LOG); | |
2451337d | 450 | return -EINVAL; |
9d565ffa CH |
451 | } |
452 | ||
453 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
454 | mp->m_readio_log = iosizelog; | |
455 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
456 | } |
457 | ||
a67d7c5f DC |
458 | return 0; |
459 | } | |
460 | ||
461 | struct proc_xfs_info { | |
cbe4dab1 DC |
462 | uint64_t flag; |
463 | char *str; | |
a67d7c5f DC |
464 | }; |
465 | ||
466 | STATIC int | |
467 | xfs_showargs( | |
468 | struct xfs_mount *mp, | |
469 | struct seq_file *m) | |
470 | { | |
471 | static struct proc_xfs_info xfs_info_set[] = { | |
472 | /* the few simple ones we can get from the mount struct */ | |
2e74af0e ES |
473 | { XFS_MOUNT_IKEEP, ",ikeep" }, |
474 | { XFS_MOUNT_WSYNC, ",wsync" }, | |
475 | { XFS_MOUNT_NOALIGN, ",noalign" }, | |
476 | { XFS_MOUNT_SWALLOC, ",swalloc" }, | |
477 | { XFS_MOUNT_NOUUID, ",nouuid" }, | |
478 | { XFS_MOUNT_NORECOVERY, ",norecovery" }, | |
479 | { XFS_MOUNT_ATTR2, ",attr2" }, | |
480 | { XFS_MOUNT_FILESTREAMS, ",filestreams" }, | |
481 | { XFS_MOUNT_GRPID, ",grpid" }, | |
482 | { XFS_MOUNT_DISCARD, ",discard" }, | |
483 | { XFS_MOUNT_SMALL_INUMS, ",inode32" }, | |
484 | { XFS_MOUNT_DAX, ",dax" }, | |
a67d7c5f DC |
485 | { 0, NULL } |
486 | }; | |
487 | static struct proc_xfs_info xfs_info_unset[] = { | |
488 | /* the few simple ones we can get from the mount struct */ | |
2e74af0e ES |
489 | { XFS_MOUNT_COMPAT_IOSIZE, ",largeio" }, |
490 | { XFS_MOUNT_BARRIER, ",nobarrier" }, | |
491 | { XFS_MOUNT_SMALL_INUMS, ",inode64" }, | |
a67d7c5f DC |
492 | { 0, NULL } |
493 | }; | |
494 | struct proc_xfs_info *xfs_infop; | |
495 | ||
496 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
497 | if (mp->m_flags & xfs_infop->flag) | |
498 | seq_puts(m, xfs_infop->str); | |
499 | } | |
500 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
501 | if (!(mp->m_flags & xfs_infop->flag)) | |
502 | seq_puts(m, xfs_infop->str); | |
503 | } | |
504 | ||
505 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
2e74af0e | 506 | seq_printf(m, ",allocsize=%dk", |
a67d7c5f DC |
507 | (int)(1 << mp->m_writeio_log) >> 10); |
508 | ||
509 | if (mp->m_logbufs > 0) | |
2e74af0e | 510 | seq_printf(m, ",logbufs=%d", mp->m_logbufs); |
a67d7c5f | 511 | if (mp->m_logbsize > 0) |
2e74af0e | 512 | seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10); |
a67d7c5f DC |
513 | |
514 | if (mp->m_logname) | |
2e74af0e | 515 | seq_show_option(m, "logdev", mp->m_logname); |
a67d7c5f | 516 | if (mp->m_rtname) |
2e74af0e | 517 | seq_show_option(m, "rtdev", mp->m_rtname); |
a67d7c5f DC |
518 | |
519 | if (mp->m_dalign > 0) | |
2e74af0e | 520 | seq_printf(m, ",sunit=%d", |
a67d7c5f DC |
521 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
522 | if (mp->m_swidth > 0) | |
2e74af0e | 523 | seq_printf(m, ",swidth=%d", |
a67d7c5f DC |
524 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
525 | ||
526 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
2e74af0e | 527 | seq_puts(m, ",usrquota"); |
a67d7c5f | 528 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) |
2e74af0e | 529 | seq_puts(m, ",uqnoenforce"); |
a67d7c5f | 530 | |
988abe40 | 531 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 532 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
2e74af0e | 533 | seq_puts(m, ",prjquota"); |
988abe40 | 534 | else |
2e74af0e | 535 | seq_puts(m, ",pqnoenforce"); |
d892d586 CS |
536 | } |
537 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 538 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
2e74af0e | 539 | seq_puts(m, ",grpquota"); |
988abe40 | 540 | else |
2e74af0e | 541 | seq_puts(m, ",gqnoenforce"); |
988abe40 | 542 | } |
a67d7c5f DC |
543 | |
544 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
2e74af0e | 545 | seq_puts(m, ",noquota"); |
a67d7c5f DC |
546 | |
547 | return 0; | |
548 | } | |
1da177e4 LT |
549 | __uint64_t |
550 | xfs_max_file_offset( | |
551 | unsigned int blockshift) | |
552 | { | |
553 | unsigned int pagefactor = 1; | |
554 | unsigned int bitshift = BITS_PER_LONG - 1; | |
555 | ||
556 | /* Figure out maximum filesize, on Linux this can depend on | |
557 | * the filesystem blocksize (on 32 bit platforms). | |
ebdec241 | 558 | * __block_write_begin does this in an [unsigned] long... |
1da177e4 LT |
559 | * page->index << (PAGE_CACHE_SHIFT - bbits) |
560 | * So, for page sized blocks (4K on 32 bit platforms), | |
561 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
562 | * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1) | |
563 | * but for smaller blocksizes it is less (bbits = log2 bsize). | |
564 | * Note1: get_block_t takes a long (implicit cast from above) | |
565 | * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch | |
566 | * can optionally convert the [unsigned] long from above into | |
567 | * an [unsigned] long long. | |
568 | */ | |
569 | ||
570 | #if BITS_PER_LONG == 32 | |
90c699a9 | 571 | # if defined(CONFIG_LBDAF) |
1da177e4 LT |
572 | ASSERT(sizeof(sector_t) == 8); |
573 | pagefactor = PAGE_CACHE_SIZE; | |
574 | bitshift = BITS_PER_LONG; | |
575 | # else | |
576 | pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift); | |
577 | # endif | |
578 | #endif | |
579 | ||
580 | return (((__uint64_t)pagefactor) << bitshift) - 1; | |
581 | } | |
582 | ||
9de67c3b | 583 | /* |
12c3f05c ES |
584 | * Set parameters for inode allocation heuristics, taking into account |
585 | * filesystem size and inode32/inode64 mount options; i.e. specifically | |
586 | * whether or not XFS_MOUNT_SMALL_INUMS is set. | |
587 | * | |
588 | * Inode allocation patterns are altered only if inode32 is requested | |
589 | * (XFS_MOUNT_SMALL_INUMS), and the filesystem is sufficiently large. | |
590 | * If altered, XFS_MOUNT_32BITINODES is set as well. | |
591 | * | |
592 | * An agcount independent of that in the mount structure is provided | |
593 | * because in the growfs case, mp->m_sb.sb_agcount is not yet updated | |
594 | * to the potentially higher ag count. | |
595 | * | |
596 | * Returns the maximum AG index which may contain inodes. | |
9de67c3b | 597 | */ |
2d2194f6 | 598 | xfs_agnumber_t |
12c3f05c ES |
599 | xfs_set_inode_alloc( |
600 | struct xfs_mount *mp, | |
601 | xfs_agnumber_t agcount) | |
2d2194f6 | 602 | { |
12c3f05c | 603 | xfs_agnumber_t index; |
4056c1d0 | 604 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
605 | xfs_sb_t *sbp = &mp->m_sb; |
606 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
607 | xfs_agino_t agino; |
608 | xfs_ino_t ino; | |
2d2194f6 | 609 | |
12c3f05c ES |
610 | /* |
611 | * Calculate how much should be reserved for inodes to meet | |
612 | * the max inode percentage. Used only for inode32. | |
2d2194f6 CM |
613 | */ |
614 | if (mp->m_maxicount) { | |
615 | __uint64_t icount; | |
616 | ||
617 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
618 | do_div(icount, 100); | |
619 | icount += sbp->sb_agblocks - 1; | |
620 | do_div(icount, sbp->sb_agblocks); | |
621 | max_metadata = icount; | |
622 | } else { | |
9de67c3b | 623 | max_metadata = agcount; |
2d2194f6 CM |
624 | } |
625 | ||
12c3f05c | 626 | /* Get the last possible inode in the filesystem */ |
54aa61f8 | 627 | agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); |
12c3f05c ES |
628 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
629 | ||
630 | /* | |
631 | * If user asked for no more than 32-bit inodes, and the fs is | |
632 | * sufficiently large, set XFS_MOUNT_32BITINODES if we must alter | |
633 | * the allocator to accommodate the request. | |
634 | */ | |
635 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
636 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
637 | else | |
638 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
54aa61f8 | 639 | |
9de67c3b | 640 | for (index = 0; index < agcount; index++) { |
12c3f05c | 641 | struct xfs_perag *pag; |
4056c1d0 | 642 | |
12c3f05c | 643 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
2d2194f6 CM |
644 | |
645 | pag = xfs_perag_get(mp, index); | |
2d2194f6 | 646 | |
12c3f05c ES |
647 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { |
648 | if (ino > XFS_MAXINUMBER_32) { | |
649 | pag->pagi_inodeok = 0; | |
650 | pag->pagf_metadata = 0; | |
651 | } else { | |
652 | pag->pagi_inodeok = 1; | |
653 | maxagi++; | |
654 | if (index < max_metadata) | |
655 | pag->pagf_metadata = 1; | |
656 | else | |
657 | pag->pagf_metadata = 0; | |
658 | } | |
659 | } else { | |
660 | pag->pagi_inodeok = 1; | |
661 | pag->pagf_metadata = 0; | |
662 | } | |
2d2194f6 | 663 | |
2d2194f6 CM |
664 | xfs_perag_put(pag); |
665 | } | |
666 | ||
12c3f05c | 667 | return (mp->m_flags & XFS_MOUNT_32BITINODES) ? maxagi : agcount; |
2d2194f6 CM |
668 | } |
669 | ||
3180e66d | 670 | STATIC int |
1da177e4 LT |
671 | xfs_blkdev_get( |
672 | xfs_mount_t *mp, | |
673 | const char *name, | |
674 | struct block_device **bdevp) | |
675 | { | |
676 | int error = 0; | |
677 | ||
d4d77629 TH |
678 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
679 | mp); | |
1da177e4 LT |
680 | if (IS_ERR(*bdevp)) { |
681 | error = PTR_ERR(*bdevp); | |
77af574e | 682 | xfs_warn(mp, "Invalid device [%s], error=%d", name, error); |
1da177e4 LT |
683 | } |
684 | ||
2451337d | 685 | return error; |
1da177e4 LT |
686 | } |
687 | ||
3180e66d | 688 | STATIC void |
1da177e4 LT |
689 | xfs_blkdev_put( |
690 | struct block_device *bdev) | |
691 | { | |
692 | if (bdev) | |
e525fd89 | 693 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
694 | } |
695 | ||
f538d4da CH |
696 | void |
697 | xfs_blkdev_issue_flush( | |
698 | xfs_buftarg_t *buftarg) | |
699 | { | |
7582df51 | 700 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 701 | } |
1da177e4 | 702 | |
19f354d4 CH |
703 | STATIC void |
704 | xfs_close_devices( | |
705 | struct xfs_mount *mp) | |
706 | { | |
707 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 708 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
b7963133 | 709 | xfs_free_buftarg(mp, mp->m_logdev_targp); |
c032bfcf | 710 | xfs_blkdev_put(logdev); |
19f354d4 CH |
711 | } |
712 | if (mp->m_rtdev_targp) { | |
c032bfcf | 713 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
b7963133 | 714 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
c032bfcf | 715 | xfs_blkdev_put(rtdev); |
19f354d4 | 716 | } |
b7963133 | 717 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 CH |
718 | } |
719 | ||
720 | /* | |
721 | * The file system configurations are: | |
722 | * (1) device (partition) with data and internal log | |
723 | * (2) logical volume with data and log subvolumes. | |
724 | * (3) logical volume with data, log, and realtime subvolumes. | |
725 | * | |
726 | * We only have to handle opening the log and realtime volumes here if | |
727 | * they are present. The data subvolume has already been opened by | |
728 | * get_sb_bdev() and is stored in sb->s_bdev. | |
729 | */ | |
730 | STATIC int | |
731 | xfs_open_devices( | |
9d565ffa | 732 | struct xfs_mount *mp) |
19f354d4 CH |
733 | { |
734 | struct block_device *ddev = mp->m_super->s_bdev; | |
735 | struct block_device *logdev = NULL, *rtdev = NULL; | |
736 | int error; | |
737 | ||
738 | /* | |
739 | * Open real time and log devices - order is important. | |
740 | */ | |
9d565ffa CH |
741 | if (mp->m_logname) { |
742 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
743 | if (error) |
744 | goto out; | |
745 | } | |
746 | ||
9d565ffa CH |
747 | if (mp->m_rtname) { |
748 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
749 | if (error) |
750 | goto out_close_logdev; | |
751 | ||
752 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
753 | xfs_warn(mp, |
754 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 755 | error = -EINVAL; |
19f354d4 CH |
756 | goto out_close_rtdev; |
757 | } | |
758 | } | |
759 | ||
760 | /* | |
761 | * Setup xfs_mount buffer target pointers | |
762 | */ | |
2451337d | 763 | error = -ENOMEM; |
34dcefd7 | 764 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev); |
19f354d4 CH |
765 | if (!mp->m_ddev_targp) |
766 | goto out_close_rtdev; | |
767 | ||
768 | if (rtdev) { | |
34dcefd7 | 769 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); |
19f354d4 CH |
770 | if (!mp->m_rtdev_targp) |
771 | goto out_free_ddev_targ; | |
772 | } | |
773 | ||
774 | if (logdev && logdev != ddev) { | |
34dcefd7 | 775 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev); |
19f354d4 CH |
776 | if (!mp->m_logdev_targp) |
777 | goto out_free_rtdev_targ; | |
778 | } else { | |
779 | mp->m_logdev_targp = mp->m_ddev_targp; | |
780 | } | |
781 | ||
782 | return 0; | |
783 | ||
784 | out_free_rtdev_targ: | |
785 | if (mp->m_rtdev_targp) | |
b7963133 | 786 | xfs_free_buftarg(mp, mp->m_rtdev_targp); |
19f354d4 | 787 | out_free_ddev_targ: |
b7963133 | 788 | xfs_free_buftarg(mp, mp->m_ddev_targp); |
19f354d4 | 789 | out_close_rtdev: |
d2a5e3c6 | 790 | xfs_blkdev_put(rtdev); |
19f354d4 CH |
791 | out_close_logdev: |
792 | if (logdev && logdev != ddev) | |
793 | xfs_blkdev_put(logdev); | |
794 | out: | |
795 | return error; | |
796 | } | |
797 | ||
e34b562c CH |
798 | /* |
799 | * Setup xfs_mount buffer target pointers based on superblock | |
800 | */ | |
801 | STATIC int | |
802 | xfs_setup_devices( | |
803 | struct xfs_mount *mp) | |
804 | { | |
805 | int error; | |
19f354d4 | 806 | |
a96c4151 | 807 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
808 | if (error) |
809 | return error; | |
810 | ||
811 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
812 | unsigned int log_sector_size = BBSIZE; | |
813 | ||
814 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
815 | log_sector_size = mp->m_sb.sb_logsectsize; | |
816 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
817 | log_sector_size); |
818 | if (error) | |
819 | return error; | |
820 | } | |
821 | if (mp->m_rtdev_targp) { | |
822 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
823 | mp->m_sb.sb_sectsize); |
824 | if (error) | |
825 | return error; | |
826 | } | |
827 | ||
828 | return 0; | |
829 | } | |
19f354d4 | 830 | |
aa6bf01d CH |
831 | STATIC int |
832 | xfs_init_mount_workqueues( | |
833 | struct xfs_mount *mp) | |
834 | { | |
78c931b8 | 835 | mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
b29c70f5 | 836 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_fsname); |
78c931b8 BF |
837 | if (!mp->m_buf_workqueue) |
838 | goto out; | |
839 | ||
aa6bf01d | 840 | mp->m_data_workqueue = alloc_workqueue("xfs-data/%s", |
8018ec08 | 841 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d | 842 | if (!mp->m_data_workqueue) |
78c931b8 | 843 | goto out_destroy_buf; |
aa6bf01d CH |
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", | |
7a29ac47 | 856 | WQ_MEM_RECLAIM|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", | |
7a29ac47 CM |
861 | WQ_MEM_RECLAIM|WQ_FREEZABLE|WQ_HIGHPRI, 0, |
862 | mp->m_fsname); | |
5889608d DC |
863 | if (!mp->m_log_workqueue) |
864 | goto out_destroy_reclaim; | |
865 | ||
579b62fa | 866 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
7a29ac47 | 867 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
579b62fa BF |
868 | if (!mp->m_eofblocks_workqueue) |
869 | goto out_destroy_log; | |
870 | ||
aa6bf01d CH |
871 | return 0; |
872 | ||
579b62fa BF |
873 | out_destroy_log: |
874 | destroy_workqueue(mp->m_log_workqueue); | |
5889608d DC |
875 | out_destroy_reclaim: |
876 | destroy_workqueue(mp->m_reclaim_workqueue); | |
877 | out_destroy_cil: | |
878 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
879 | out_destroy_unwritten: |
880 | destroy_workqueue(mp->m_unwritten_workqueue); | |
aa6bf01d CH |
881 | out_destroy_data_iodone_queue: |
882 | destroy_workqueue(mp->m_data_workqueue); | |
78c931b8 BF |
883 | out_destroy_buf: |
884 | destroy_workqueue(mp->m_buf_workqueue); | |
aa6bf01d CH |
885 | out: |
886 | return -ENOMEM; | |
887 | } | |
888 | ||
889 | STATIC void | |
890 | xfs_destroy_mount_workqueues( | |
891 | struct xfs_mount *mp) | |
892 | { | |
579b62fa | 893 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d DC |
894 | destroy_workqueue(mp->m_log_workqueue); |
895 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f | 896 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d CH |
897 | destroy_workqueue(mp->m_data_workqueue); |
898 | destroy_workqueue(mp->m_unwritten_workqueue); | |
78c931b8 | 899 | destroy_workqueue(mp->m_buf_workqueue); |
aa6bf01d CH |
900 | } |
901 | ||
9aa05000 DC |
902 | /* |
903 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
904 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
905 | * for IO to complete so that we effectively throttle multiple callers to the | |
906 | * rate at which IO is completing. | |
907 | */ | |
908 | void | |
909 | xfs_flush_inodes( | |
910 | struct xfs_mount *mp) | |
911 | { | |
912 | struct super_block *sb = mp->m_super; | |
913 | ||
914 | if (down_read_trylock(&sb->s_umount)) { | |
0dc83bd3 | 915 | sync_inodes_sb(sb); |
9aa05000 DC |
916 | up_read(&sb->s_umount); |
917 | } | |
918 | } | |
919 | ||
bf904248 | 920 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 921 | STATIC struct inode * |
a50cd269 | 922 | xfs_fs_alloc_inode( |
1da177e4 LT |
923 | struct super_block *sb) |
924 | { | |
bf904248 | 925 | BUG(); |
493dca61 | 926 | return NULL; |
1da177e4 LT |
927 | } |
928 | ||
bf904248 | 929 | /* |
99fa8cb3 DC |
930 | * Now that the generic code is guaranteed not to be accessing |
931 | * the linux inode, we can reclaim the inode. | |
bf904248 | 932 | */ |
1da177e4 | 933 | STATIC void |
a50cd269 | 934 | xfs_fs_destroy_inode( |
848ce8f7 | 935 | struct inode *inode) |
1da177e4 | 936 | { |
848ce8f7 CH |
937 | struct xfs_inode *ip = XFS_I(inode); |
938 | ||
cca28fb8 | 939 | trace_xfs_destroy_inode(ip); |
99fa8cb3 | 940 | |
ff6d6af2 | 941 | XFS_STATS_INC(ip->i_mount, vn_reclaim); |
848ce8f7 | 942 | |
848ce8f7 CH |
943 | ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0); |
944 | ||
945 | /* | |
946 | * We should never get here with one of the reclaim flags already set. | |
947 | */ | |
948 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
949 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
950 | ||
951 | /* | |
57817c68 DC |
952 | * We always use background reclaim here because even if the |
953 | * inode is clean, it still may be under IO and hence we have | |
954 | * to take the flush lock. The background reclaim path handles | |
955 | * this more efficiently than we can here, so simply let background | |
956 | * reclaim tear down all inodes. | |
848ce8f7 | 957 | */ |
57817c68 | 958 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
959 | } |
960 | ||
07c8f675 DC |
961 | /* |
962 | * Slab object creation initialisation for the XFS inode. | |
963 | * This covers only the idempotent fields in the XFS inode; | |
964 | * all other fields need to be initialised on allocation | |
b595076a | 965 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
966 | * fields in the xfs inode that left in the initialise state |
967 | * when freeing the inode. | |
968 | */ | |
bf904248 DC |
969 | STATIC void |
970 | xfs_fs_inode_init_once( | |
07c8f675 DC |
971 | void *inode) |
972 | { | |
973 | struct xfs_inode *ip = inode; | |
974 | ||
975 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
976 | |
977 | /* vfs inode */ | |
978 | inode_init_once(VFS_I(ip)); | |
979 | ||
980 | /* xfs inode */ | |
07c8f675 DC |
981 | atomic_set(&ip->i_pincount, 0); |
982 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 | 983 | |
653c60b6 DC |
984 | mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
985 | "xfsino", ip->i_ino); | |
07c8f675 DC |
986 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
987 | "xfsino", ip->i_ino); | |
07c8f675 DC |
988 | } |
989 | ||
1da177e4 | 990 | STATIC void |
b57922d9 | 991 | xfs_fs_evict_inode( |
1da177e4 LT |
992 | struct inode *inode) |
993 | { | |
1543d79c | 994 | xfs_inode_t *ip = XFS_I(inode); |
56d433e4 | 995 | |
4f59af75 CH |
996 | ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); |
997 | ||
b57922d9 | 998 | trace_xfs_evict_inode(ip); |
cca28fb8 | 999 | |
91b0abe3 | 1000 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 1001 | clear_inode(inode); |
ff6d6af2 BD |
1002 | XFS_STATS_INC(ip->i_mount, vn_rele); |
1003 | XFS_STATS_INC(ip->i_mount, vn_remove); | |
99fa8cb3 DC |
1004 | |
1005 | xfs_inactive(ip); | |
56d433e4 | 1006 | } |
1da177e4 | 1007 | |
5132ba8f DC |
1008 | /* |
1009 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
1010 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
1011 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
1012 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
1013 | * we drop the final reference on. | |
1014 | */ | |
1015 | STATIC int | |
1016 | xfs_fs_drop_inode( | |
1017 | struct inode *inode) | |
1018 | { | |
1019 | struct xfs_inode *ip = XFS_I(inode); | |
1020 | ||
1021 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); | |
1022 | } | |
1023 | ||
a738159d CH |
1024 | STATIC void |
1025 | xfs_free_fsname( | |
1026 | struct xfs_mount *mp) | |
1027 | { | |
1028 | kfree(mp->m_fsname); | |
1029 | kfree(mp->m_rtname); | |
1030 | kfree(mp->m_logname); | |
1031 | } | |
1032 | ||
1da177e4 | 1033 | STATIC int |
69961a26 | 1034 | xfs_fs_sync_fs( |
1da177e4 LT |
1035 | struct super_block *sb, |
1036 | int wait) | |
1037 | { | |
745f6919 | 1038 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1039 | |
e893bffd | 1040 | /* |
34625c66 | 1041 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1042 | */ |
34625c66 | 1043 | if (!wait) |
69961a26 | 1044 | return 0; |
69961a26 | 1045 | |
34061f5c | 1046 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1047 | if (laptop_mode) { |
1da177e4 LT |
1048 | /* |
1049 | * The disk must be active because we're syncing. | |
f661f1e0 | 1050 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1051 | * active) instead of later (when it might not be). |
1052 | */ | |
f661f1e0 | 1053 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1054 | } |
1055 | ||
69961a26 | 1056 | return 0; |
1da177e4 LT |
1057 | } |
1058 | ||
1059 | STATIC int | |
a50cd269 | 1060 | xfs_fs_statfs( |
726c3342 | 1061 | struct dentry *dentry, |
1da177e4 LT |
1062 | struct kstatfs *statp) |
1063 | { | |
4ca488eb CH |
1064 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1065 | xfs_sb_t *sbp = &mp->m_sb; | |
2b0143b5 | 1066 | struct xfs_inode *ip = XFS_I(d_inode(dentry)); |
4ca488eb | 1067 | __uint64_t fakeinos, id; |
501ab323 | 1068 | __uint64_t icount; |
e88b64ea | 1069 | __uint64_t ifree; |
0d485ada | 1070 | __uint64_t fdblocks; |
4ca488eb | 1071 | xfs_extlen_t lsize; |
2fe33661 | 1072 | __int64_t ffree; |
4ca488eb CH |
1073 | |
1074 | statp->f_type = XFS_SB_MAGIC; | |
1075 | statp->f_namelen = MAXNAMELEN - 1; | |
1076 | ||
1077 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1078 | statp->f_fsid.val[0] = (u32)id; | |
1079 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1080 | ||
501ab323 | 1081 | icount = percpu_counter_sum(&mp->m_icount); |
e88b64ea | 1082 | ifree = percpu_counter_sum(&mp->m_ifree); |
0d485ada | 1083 | fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
4ca488eb CH |
1084 | |
1085 | spin_lock(&mp->m_sb_lock); | |
1086 | statp->f_bsize = sbp->sb_blocksize; | |
1087 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1088 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
0d485ada DC |
1089 | spin_unlock(&mp->m_sb_lock); |
1090 | ||
1091 | statp->f_bfree = fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1092 | statp->f_bavail = statp->f_bfree; | |
1093 | ||
4ca488eb | 1094 | fakeinos = statp->f_bfree << sbp->sb_inopblog; |
501ab323 | 1095 | statp->f_files = MIN(icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); |
4ca488eb | 1096 | if (mp->m_maxicount) |
a19d9f88 CH |
1097 | statp->f_files = min_t(typeof(statp->f_files), |
1098 | statp->f_files, | |
1099 | mp->m_maxicount); | |
2fe33661 | 1100 | |
01f9882e ES |
1101 | /* If sb_icount overshot maxicount, report actual allocation */ |
1102 | statp->f_files = max_t(typeof(statp->f_files), | |
1103 | statp->f_files, | |
1104 | sbp->sb_icount); | |
1105 | ||
2fe33661 | 1106 | /* make sure statp->f_ffree does not underflow */ |
e88b64ea | 1107 | ffree = statp->f_files - (icount - ifree); |
2fe33661 SB |
1108 | statp->f_ffree = max_t(__int64_t, ffree, 0); |
1109 | ||
4ca488eb | 1110 | |
da5bf95e | 1111 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1112 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1113 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1114 | xfs_qm_statvfs(ip, statp); |
4ca488eb | 1115 | return 0; |
1da177e4 LT |
1116 | } |
1117 | ||
d5db0f97 ES |
1118 | STATIC void |
1119 | xfs_save_resvblks(struct xfs_mount *mp) | |
1120 | { | |
1121 | __uint64_t resblks = 0; | |
1122 | ||
1123 | mp->m_resblks_save = mp->m_resblks; | |
1124 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1125 | } | |
1126 | ||
1127 | STATIC void | |
1128 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1129 | { | |
1130 | __uint64_t resblks; | |
1131 | ||
1132 | if (mp->m_resblks_save) { | |
1133 | resblks = mp->m_resblks_save; | |
1134 | mp->m_resblks_save = 0; | |
1135 | } else | |
1136 | resblks = xfs_default_resblks(mp); | |
1137 | ||
1138 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1139 | } | |
1140 | ||
c7eea6f7 DC |
1141 | /* |
1142 | * Trigger writeback of all the dirty metadata in the file system. | |
1143 | * | |
1144 | * This ensures that the metadata is written to their location on disk rather | |
1145 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1146 | * there is no log replay required to write the inodes to disk - this is the |
1147 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1148 | * |
c75921a7 DC |
1149 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1150 | * it is started again when appropriate. | |
c7eea6f7 | 1151 | */ |
632b89e8 | 1152 | static void |
c7eea6f7 DC |
1153 | xfs_quiesce_attr( |
1154 | struct xfs_mount *mp) | |
1155 | { | |
1156 | int error = 0; | |
1157 | ||
1158 | /* wait for all modifications to complete */ | |
1159 | while (atomic_read(&mp->m_active_trans) > 0) | |
1160 | delay(100); | |
1161 | ||
1162 | /* force the log to unpin objects from the now complete transactions */ | |
1163 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1164 | ||
1165 | /* reclaim inodes to do any IO before the freeze completes */ | |
1166 | xfs_reclaim_inodes(mp, 0); | |
1167 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1168 | ||
c7eea6f7 DC |
1169 | /* Push the superblock and write an unmount record */ |
1170 | error = xfs_log_sbcount(mp); | |
1171 | if (error) | |
1172 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1173 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1174 | /* |
c75921a7 DC |
1175 | * Just warn here till VFS can correctly support |
1176 | * read-only remount without racing. | |
c7eea6f7 | 1177 | */ |
c75921a7 | 1178 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1179 | |
c75921a7 | 1180 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1181 | } |
1182 | ||
a08ee40a ES |
1183 | STATIC int |
1184 | xfs_test_remount_options( | |
1185 | struct super_block *sb, | |
1186 | struct xfs_mount *mp, | |
1187 | char *options) | |
1188 | { | |
1189 | int error = 0; | |
1190 | struct xfs_mount *tmp_mp; | |
1191 | ||
1192 | tmp_mp = kmem_zalloc(sizeof(*tmp_mp), KM_MAYFAIL); | |
1193 | if (!tmp_mp) | |
1194 | return -ENOMEM; | |
1195 | ||
1196 | tmp_mp->m_super = sb; | |
1197 | error = xfs_parseargs(tmp_mp, options); | |
1198 | xfs_free_fsname(tmp_mp); | |
1199 | kfree(tmp_mp); | |
1200 | ||
1201 | return error; | |
1202 | } | |
1203 | ||
1da177e4 | 1204 | STATIC int |
a50cd269 | 1205 | xfs_fs_remount( |
1da177e4 LT |
1206 | struct super_block *sb, |
1207 | int *flags, | |
1208 | char *options) | |
1209 | { | |
745f6919 | 1210 | struct xfs_mount *mp = XFS_M(sb); |
9de67c3b | 1211 | xfs_sb_t *sbp = &mp->m_sb; |
62a877e3 CH |
1212 | substring_t args[MAX_OPT_ARGS]; |
1213 | char *p; | |
7884bc86 | 1214 | int error; |
1da177e4 | 1215 | |
a08ee40a ES |
1216 | /* First, check for complete junk; i.e. invalid options */ |
1217 | error = xfs_test_remount_options(sb, mp, options); | |
1218 | if (error) | |
1219 | return error; | |
1220 | ||
02b9984d | 1221 | sync_filesystem(sb); |
62a877e3 CH |
1222 | while ((p = strsep(&options, ",")) != NULL) { |
1223 | int token; | |
bdd907ba | 1224 | |
62a877e3 CH |
1225 | if (!*p) |
1226 | continue; | |
48b62a1a | 1227 | |
62a877e3 CH |
1228 | token = match_token(p, tokens, args); |
1229 | switch (token) { | |
1230 | case Opt_barrier: | |
48b62a1a | 1231 | mp->m_flags |= XFS_MOUNT_BARRIER; |
62a877e3 CH |
1232 | break; |
1233 | case Opt_nobarrier: | |
48b62a1a | 1234 | mp->m_flags &= ~XFS_MOUNT_BARRIER; |
62a877e3 | 1235 | break; |
c3a58fec | 1236 | case Opt_inode64: |
12c3f05c ES |
1237 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
1238 | mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount); | |
c3a58fec | 1239 | break; |
2ea03929 | 1240 | case Opt_inode32: |
12c3f05c ES |
1241 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
1242 | mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount); | |
2ea03929 | 1243 | break; |
62a877e3 | 1244 | default: |
6efdf281 CH |
1245 | /* |
1246 | * Logically we would return an error here to prevent | |
1247 | * users from believing they might have changed | |
1248 | * mount options using remount which can't be changed. | |
1249 | * | |
1250 | * But unfortunately mount(8) adds all options from | |
1251 | * mtab and fstab to the mount arguments in some cases | |
1252 | * so we can't blindly reject options, but have to | |
1253 | * check for each specified option if it actually | |
1254 | * differs from the currently set option and only | |
1255 | * reject it if that's the case. | |
1256 | * | |
1257 | * Until that is implemented we return success for | |
1258 | * every remount request, and silently ignore all | |
1259 | * options that we can't actually change. | |
1260 | */ | |
1261 | #if 0 | |
4f10700a | 1262 | xfs_info(mp, |
08e96e1a | 1263 | "mount option \"%s\" not supported for remount", p); |
62a877e3 | 1264 | return -EINVAL; |
6efdf281 | 1265 | #else |
6c5e51da | 1266 | break; |
6efdf281 | 1267 | #endif |
48b62a1a | 1268 | } |
62a877e3 CH |
1269 | } |
1270 | ||
7884bc86 | 1271 | /* ro -> rw */ |
62a877e3 | 1272 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & MS_RDONLY)) { |
bbe051c8 ES |
1273 | if (mp->m_flags & XFS_MOUNT_NORECOVERY) { |
1274 | xfs_warn(mp, | |
1275 | "ro->rw transition prohibited on norecovery mount"); | |
1276 | return -EINVAL; | |
1277 | } | |
1278 | ||
62a877e3 | 1279 | mp->m_flags &= ~XFS_MOUNT_RDONLY; |
7884bc86 CH |
1280 | |
1281 | /* | |
1282 | * If this is the first remount to writeable state we | |
1283 | * might have some superblock changes to update. | |
1284 | */ | |
61e63ecb DC |
1285 | if (mp->m_update_sb) { |
1286 | error = xfs_sync_sb(mp, false); | |
7884bc86 | 1287 | if (error) { |
4f10700a | 1288 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1289 | return error; |
1290 | } | |
61e63ecb | 1291 | mp->m_update_sb = false; |
7884bc86 | 1292 | } |
cbe132a8 DC |
1293 | |
1294 | /* | |
1295 | * Fill out the reserve pool if it is empty. Use the stashed | |
1296 | * value if it is non-zero, otherwise go with the default. | |
1297 | */ | |
d5db0f97 | 1298 | xfs_restore_resvblks(mp); |
f661f1e0 | 1299 | xfs_log_work_queue(mp); |
62a877e3 CH |
1300 | } |
1301 | ||
1302 | /* rw -> ro */ | |
1303 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { | |
cbe132a8 | 1304 | /* |
34061f5c DC |
1305 | * Before we sync the metadata, we need to free up the reserve |
1306 | * block pool so that the used block count in the superblock on | |
1307 | * disk is correct at the end of the remount. Stash the current | |
1308 | * reserve pool size so that if we get remounted rw, we can | |
1309 | * return it to the same size. | |
cbe132a8 | 1310 | */ |
d5db0f97 | 1311 | xfs_save_resvblks(mp); |
76bf105c | 1312 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1313 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1314 | } | |
1315 | ||
62a877e3 | 1316 | return 0; |
1da177e4 LT |
1317 | } |
1318 | ||
9909c4aa CH |
1319 | /* |
1320 | * Second stage of a freeze. The data is already frozen so we only | |
61e63ecb DC |
1321 | * need to take care of the metadata. Once that's done sync the superblock |
1322 | * to the log to dirty it in case of a crash while frozen. This ensures that we | |
1323 | * will recover the unlinked inode lists on the next mount. | |
9909c4aa | 1324 | */ |
c4be0c1d TS |
1325 | STATIC int |
1326 | xfs_fs_freeze( | |
1da177e4 LT |
1327 | struct super_block *sb) |
1328 | { | |
9909c4aa CH |
1329 | struct xfs_mount *mp = XFS_M(sb); |
1330 | ||
d5db0f97 | 1331 | xfs_save_resvblks(mp); |
76bf105c | 1332 | xfs_quiesce_attr(mp); |
61e63ecb | 1333 | return xfs_sync_sb(mp, true); |
1da177e4 LT |
1334 | } |
1335 | ||
d5db0f97 ES |
1336 | STATIC int |
1337 | xfs_fs_unfreeze( | |
1338 | struct super_block *sb) | |
1339 | { | |
1340 | struct xfs_mount *mp = XFS_M(sb); | |
1341 | ||
1342 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1343 | xfs_log_work_queue(mp); |
d5db0f97 ES |
1344 | return 0; |
1345 | } | |
1346 | ||
1da177e4 | 1347 | STATIC int |
a50cd269 | 1348 | xfs_fs_show_options( |
1da177e4 | 1349 | struct seq_file *m, |
34c80b1d | 1350 | struct dentry *root) |
1da177e4 | 1351 | { |
2451337d | 1352 | return xfs_showargs(XFS_M(root->d_sb), m); |
1da177e4 LT |
1353 | } |
1354 | ||
f8f15e42 CH |
1355 | /* |
1356 | * This function fills in xfs_mount_t fields based on mount args. | |
1357 | * Note: the superblock _has_ now been read in. | |
1358 | */ | |
1359 | STATIC int | |
1360 | xfs_finish_flags( | |
f8f15e42 CH |
1361 | struct xfs_mount *mp) |
1362 | { | |
1363 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1364 | ||
025dfdaf | 1365 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1366 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1367 | if (mp->m_logbsize <= 0 && |
1368 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1369 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1370 | } else if (mp->m_logbsize > 0 && |
1371 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1372 | xfs_warn(mp, |
1373 | "logbuf size must be greater than or equal to log stripe size"); | |
2451337d | 1374 | return -EINVAL; |
f8f15e42 CH |
1375 | } |
1376 | } else { | |
1377 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1378 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1379 | xfs_warn(mp, |
1380 | "logbuf size for version 1 logs must be 16K or 32K"); | |
2451337d | 1381 | return -EINVAL; |
f8f15e42 CH |
1382 | } |
1383 | } | |
1384 | ||
d3eaace8 DC |
1385 | /* |
1386 | * V5 filesystems always use attr2 format for attributes. | |
1387 | */ | |
1388 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1389 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
2e74af0e ES |
1390 | xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. " |
1391 | "attr2 is always enabled for V5 filesystems."); | |
2451337d | 1392 | return -EINVAL; |
d3eaace8 DC |
1393 | } |
1394 | ||
f8f15e42 CH |
1395 | /* |
1396 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1397 | * told by noattr2 to turn it off | |
1398 | */ | |
1399 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1400 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1401 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1402 | ||
1403 | /* | |
1404 | * prohibit r/w mounts of read-only filesystems | |
1405 | */ | |
1406 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1407 | xfs_warn(mp, |
1408 | "cannot mount a read-only filesystem as read-write"); | |
2451337d | 1409 | return -EROFS; |
f8f15e42 CH |
1410 | } |
1411 | ||
d892d586 CS |
1412 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1413 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1414 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1415 | xfs_warn(mp, | |
1416 | "Super block does not support project and group quota together"); | |
2451337d | 1417 | return -EINVAL; |
d892d586 CS |
1418 | } |
1419 | ||
f8f15e42 CH |
1420 | return 0; |
1421 | } | |
1422 | ||
5681ca40 DC |
1423 | static int |
1424 | xfs_init_percpu_counters( | |
1425 | struct xfs_mount *mp) | |
1426 | { | |
1427 | int error; | |
1428 | ||
1429 | error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL); | |
1430 | if (error) | |
5e9383f9 | 1431 | return -ENOMEM; |
5681ca40 DC |
1432 | |
1433 | error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL); | |
1434 | if (error) | |
1435 | goto free_icount; | |
1436 | ||
1437 | error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL); | |
1438 | if (error) | |
1439 | goto free_ifree; | |
1440 | ||
1441 | return 0; | |
1442 | ||
1443 | free_ifree: | |
1444 | percpu_counter_destroy(&mp->m_ifree); | |
1445 | free_icount: | |
1446 | percpu_counter_destroy(&mp->m_icount); | |
1447 | return -ENOMEM; | |
1448 | } | |
1449 | ||
1450 | void | |
1451 | xfs_reinit_percpu_counters( | |
1452 | struct xfs_mount *mp) | |
1453 | { | |
1454 | percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount); | |
1455 | percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree); | |
1456 | percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks); | |
1457 | } | |
1458 | ||
1459 | static void | |
1460 | xfs_destroy_percpu_counters( | |
1461 | struct xfs_mount *mp) | |
1462 | { | |
1463 | percpu_counter_destroy(&mp->m_icount); | |
1464 | percpu_counter_destroy(&mp->m_ifree); | |
1465 | percpu_counter_destroy(&mp->m_fdblocks); | |
1466 | } | |
1467 | ||
1da177e4 | 1468 | STATIC int |
a50cd269 | 1469 | xfs_fs_fill_super( |
1da177e4 LT |
1470 | struct super_block *sb, |
1471 | void *data, | |
1472 | int silent) | |
1473 | { | |
f3dcc13f | 1474 | struct inode *root; |
745f6919 | 1475 | struct xfs_mount *mp = NULL; |
2451337d | 1476 | int flags = 0, error = -ENOMEM; |
bdd907ba | 1477 | |
c962fb79 CH |
1478 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1479 | if (!mp) | |
9d565ffa | 1480 | goto out; |
1da177e4 | 1481 | |
c962fb79 | 1482 | spin_lock_init(&mp->m_sb_lock); |
c962fb79 CH |
1483 | mutex_init(&mp->m_growlock); |
1484 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1485 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1486 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
e3aed1a0 | 1487 | mp->m_kobj.kobject.kset = xfs_kset; |
74394496 | 1488 | |
b267ce99 CH |
1489 | mp->m_super = sb; |
1490 | sb->s_fs_info = mp; | |
1da177e4 | 1491 | |
288699fe | 1492 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1493 | if (error) |
9d565ffa | 1494 | goto out_free_fsname; |
1da177e4 LT |
1495 | |
1496 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1497 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1498 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1499 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1500 | sb->s_qcop = &xfs_quotactl_operations; |
17ef4fdd | 1501 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
fcafb71b | 1502 | #endif |
a50cd269 | 1503 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1504 | |
9d565ffa | 1505 | if (silent) |
f8f15e42 CH |
1506 | flags |= XFS_MFSI_QUIET; |
1507 | ||
9d565ffa | 1508 | error = xfs_open_devices(mp); |
19f354d4 | 1509 | if (error) |
288699fe | 1510 | goto out_free_fsname; |
f8f15e42 | 1511 | |
2451337d | 1512 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1513 | if (error) |
1514 | goto out_close_devices; | |
c962fb79 | 1515 | |
5681ca40 | 1516 | error = xfs_init_percpu_counters(mp); |
aa6bf01d CH |
1517 | if (error) |
1518 | goto out_destroy_workqueues; | |
1519 | ||
225e4635 BD |
1520 | /* Allocate stats memory before we do operations that might use it */ |
1521 | mp->m_stats.xs_stats = alloc_percpu(struct xfsstats); | |
1522 | if (!mp->m_stats.xs_stats) { | |
f9d460b3 | 1523 | error = -ENOMEM; |
225e4635 BD |
1524 | goto out_destroy_counters; |
1525 | } | |
1526 | ||
f8f15e42 CH |
1527 | error = xfs_readsb(mp, flags); |
1528 | if (error) | |
225e4635 | 1529 | goto out_free_stats; |
9d565ffa CH |
1530 | |
1531 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1532 | if (error) |
effa2eda | 1533 | goto out_free_sb; |
f8f15e42 | 1534 | |
e34b562c | 1535 | error = xfs_setup_devices(mp); |
19f354d4 | 1536 | if (error) |
effa2eda | 1537 | goto out_free_sb; |
f8f15e42 | 1538 | |
f8f15e42 CH |
1539 | error = xfs_filestream_mount(mp); |
1540 | if (error) | |
effa2eda | 1541 | goto out_free_sb; |
f8f15e42 | 1542 | |
704b2907 DC |
1543 | /* |
1544 | * we must configure the block size in the superblock before we run the | |
1545 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1546 | */ |
4ca488eb CH |
1547 | sb->s_magic = XFS_SB_MAGIC; |
1548 | sb->s_blocksize = mp->m_sb.sb_blocksize; | |
1549 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1550 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1551 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 LT |
1552 | sb->s_time_gran = 1; |
1553 | set_posix_acl_flag(sb); | |
1554 | ||
dc037ad7 DC |
1555 | /* version 5 superblocks support inode version counters. */ |
1556 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
1557 | sb->s_flags |= MS_I_VERSION; | |
1558 | ||
cbe4dab1 DC |
1559 | if (mp->m_flags & XFS_MOUNT_DAX) { |
1560 | xfs_warn(mp, | |
1561 | "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); | |
1562 | if (sb->s_blocksize != PAGE_SIZE) { | |
1563 | xfs_alert(mp, | |
1564 | "Filesystem block size invalid for DAX Turning DAX off."); | |
1565 | mp->m_flags &= ~XFS_MOUNT_DAX; | |
1566 | } else if (!sb->s_bdev->bd_disk->fops->direct_access) { | |
1567 | xfs_alert(mp, | |
1568 | "Block device does not support DAX Turning DAX off."); | |
1569 | mp->m_flags &= ~XFS_MOUNT_DAX; | |
1570 | } | |
1571 | } | |
1572 | ||
1b867d3a BF |
1573 | if (xfs_sb_version_hassparseinodes(&mp->m_sb)) |
1574 | xfs_alert(mp, | |
1575 | "EXPERIMENTAL sparse inode feature enabled. Use at your own risk!"); | |
1576 | ||
8a00ebe4 | 1577 | error = xfs_mountfs(mp); |
2bcf6e97 | 1578 | if (error) |
7e18530b | 1579 | goto out_filestream_unmount; |
704b2907 | 1580 | |
01651646 | 1581 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1582 | if (!root) { |
2451337d | 1583 | error = -ENOENT; |
8a00ebe4 | 1584 | goto out_unmount; |
cbc89dcf | 1585 | } |
48fde701 | 1586 | sb->s_root = d_make_root(root); |
f3dcc13f | 1587 | if (!sb->s_root) { |
2451337d | 1588 | error = -ENOMEM; |
8a00ebe4 | 1589 | goto out_unmount; |
1da177e4 | 1590 | } |
74394496 | 1591 | |
1da177e4 | 1592 | return 0; |
33c7a2bc | 1593 | |
7e18530b | 1594 | out_filestream_unmount: |
120226c1 | 1595 | xfs_filestream_unmount(mp); |
effa2eda CH |
1596 | out_free_sb: |
1597 | xfs_freesb(mp); | |
225e4635 BD |
1598 | out_free_stats: |
1599 | free_percpu(mp->m_stats.xs_stats); | |
9d565ffa | 1600 | out_destroy_counters: |
5681ca40 | 1601 | xfs_destroy_percpu_counters(mp); |
225e4635 | 1602 | out_destroy_workqueues: |
aa6bf01d | 1603 | xfs_destroy_mount_workqueues(mp); |
61ba35de | 1604 | out_close_devices: |
19f354d4 | 1605 | xfs_close_devices(mp); |
9d565ffa CH |
1606 | out_free_fsname: |
1607 | xfs_free_fsname(mp); | |
c962fb79 | 1608 | kfree(mp); |
9d565ffa | 1609 | out: |
2451337d | 1610 | return error; |
f8f15e42 | 1611 | |
2bcf6e97 | 1612 | out_unmount: |
e48ad316 | 1613 | xfs_filestream_unmount(mp); |
19f354d4 | 1614 | xfs_unmountfs(mp); |
6203300e | 1615 | goto out_free_sb; |
1da177e4 LT |
1616 | } |
1617 | ||
5681ca40 DC |
1618 | STATIC void |
1619 | xfs_fs_put_super( | |
1620 | struct super_block *sb) | |
1621 | { | |
1622 | struct xfs_mount *mp = XFS_M(sb); | |
1623 | ||
4225441a | 1624 | xfs_notice(mp, "Unmounting Filesystem"); |
5681ca40 DC |
1625 | xfs_filestream_unmount(mp); |
1626 | xfs_unmountfs(mp); | |
1627 | ||
1628 | xfs_freesb(mp); | |
225e4635 | 1629 | free_percpu(mp->m_stats.xs_stats); |
5681ca40 DC |
1630 | xfs_destroy_percpu_counters(mp); |
1631 | xfs_destroy_mount_workqueues(mp); | |
1632 | xfs_close_devices(mp); | |
1633 | xfs_free_fsname(mp); | |
1634 | kfree(mp); | |
1635 | } | |
1636 | ||
152a0836 AV |
1637 | STATIC struct dentry * |
1638 | xfs_fs_mount( | |
1da177e4 LT |
1639 | struct file_system_type *fs_type, |
1640 | int flags, | |
1641 | const char *dev_name, | |
152a0836 | 1642 | void *data) |
1da177e4 | 1643 | { |
152a0836 | 1644 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1645 | } |
1646 | ||
0a234c6d | 1647 | static long |
8daaa831 | 1648 | xfs_fs_nr_cached_objects( |
9b17c623 | 1649 | struct super_block *sb, |
4101b624 | 1650 | struct shrink_control *sc) |
8daaa831 DC |
1651 | { |
1652 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1653 | } | |
1654 | ||
0a234c6d | 1655 | static long |
8daaa831 DC |
1656 | xfs_fs_free_cached_objects( |
1657 | struct super_block *sb, | |
4101b624 | 1658 | struct shrink_control *sc) |
8daaa831 | 1659 | { |
4101b624 | 1660 | return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); |
8daaa831 DC |
1661 | } |
1662 | ||
b87221de | 1663 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1664 | .alloc_inode = xfs_fs_alloc_inode, |
1665 | .destroy_inode = xfs_fs_destroy_inode, | |
b57922d9 | 1666 | .evict_inode = xfs_fs_evict_inode, |
5132ba8f | 1667 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1668 | .put_super = xfs_fs_put_super, |
69961a26 | 1669 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1670 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1671 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1672 | .statfs = xfs_fs_statfs, |
1673 | .remount_fs = xfs_fs_remount, | |
1674 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1675 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1676 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1677 | }; |
1678 | ||
5085b607 | 1679 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1680 | .owner = THIS_MODULE, |
1681 | .name = "xfs", | |
152a0836 | 1682 | .mount = xfs_fs_mount, |
1da177e4 LT |
1683 | .kill_sb = kill_block_super, |
1684 | .fs_flags = FS_REQUIRES_DEV, | |
1685 | }; | |
7f78e035 | 1686 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1687 | |
9f8868ff CH |
1688 | STATIC int __init |
1689 | xfs_init_zones(void) | |
1690 | { | |
9f8868ff CH |
1691 | |
1692 | xfs_ioend_zone = kmem_zone_init(sizeof(xfs_ioend_t), "xfs_ioend"); | |
1693 | if (!xfs_ioend_zone) | |
bf904248 | 1694 | goto out; |
9f8868ff CH |
1695 | |
1696 | xfs_ioend_pool = mempool_create_slab_pool(4 * MAX_BUF_PER_PAGE, | |
1697 | xfs_ioend_zone); | |
1698 | if (!xfs_ioend_pool) | |
1699 | goto out_destroy_ioend_zone; | |
1700 | ||
1701 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), | |
1702 | "xfs_log_ticket"); | |
1703 | if (!xfs_log_ticket_zone) | |
1704 | goto out_destroy_ioend_pool; | |
1705 | ||
1706 | xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), | |
1707 | "xfs_bmap_free_item"); | |
1708 | if (!xfs_bmap_free_item_zone) | |
1709 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1710 | |
9f8868ff CH |
1711 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1712 | "xfs_btree_cur"); | |
1713 | if (!xfs_btree_cur_zone) | |
1714 | goto out_destroy_bmap_free_item_zone; | |
1715 | ||
1716 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1717 | "xfs_da_state"); | |
1718 | if (!xfs_da_state_zone) | |
1719 | goto out_destroy_btree_cur_zone; | |
1720 | ||
9f8868ff CH |
1721 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
1722 | if (!xfs_ifork_zone) | |
1d9025e5 | 1723 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1724 | |
1725 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1726 | if (!xfs_trans_zone) | |
1727 | goto out_destroy_ifork_zone; | |
1728 | ||
e98c414f CH |
1729 | xfs_log_item_desc_zone = |
1730 | kmem_zone_init(sizeof(struct xfs_log_item_desc), | |
1731 | "xfs_log_item_desc"); | |
1732 | if (!xfs_log_item_desc_zone) | |
1733 | goto out_destroy_trans_zone; | |
1734 | ||
9f8868ff CH |
1735 | /* |
1736 | * The size of the zone allocated buf log item is the maximum | |
1737 | * size possible under XFS. This wastes a little bit of memory, | |
1738 | * but it is much faster. | |
1739 | */ | |
77c1a08f DC |
1740 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1741 | "xfs_buf_item"); | |
9f8868ff | 1742 | if (!xfs_buf_item_zone) |
e98c414f | 1743 | goto out_destroy_log_item_desc_zone; |
9f8868ff CH |
1744 | |
1745 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1746 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1747 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1748 | if (!xfs_efd_zone) | |
1749 | goto out_destroy_buf_item_zone; | |
1750 | ||
1751 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1752 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1753 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1754 | if (!xfs_efi_zone) | |
1755 | goto out_destroy_efd_zone; | |
1756 | ||
1757 | xfs_inode_zone = | |
1758 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
5d097056 VD |
1759 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD | |
1760 | KM_ZONE_ACCOUNT, xfs_fs_inode_init_once); | |
9f8868ff CH |
1761 | if (!xfs_inode_zone) |
1762 | goto out_destroy_efi_zone; | |
1763 | ||
1764 | xfs_ili_zone = | |
1765 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1766 | KM_ZONE_SPREAD, NULL); | |
1767 | if (!xfs_ili_zone) | |
1768 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1769 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1770 | "xfs_icr"); | |
1771 | if (!xfs_icreate_zone) | |
1772 | goto out_destroy_ili_zone; | |
9f8868ff | 1773 | |
9f8868ff CH |
1774 | return 0; |
1775 | ||
3ebe7d2d DC |
1776 | out_destroy_ili_zone: |
1777 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1778 | out_destroy_inode_zone: |
1779 | kmem_zone_destroy(xfs_inode_zone); | |
1780 | out_destroy_efi_zone: | |
1781 | kmem_zone_destroy(xfs_efi_zone); | |
1782 | out_destroy_efd_zone: | |
1783 | kmem_zone_destroy(xfs_efd_zone); | |
1784 | out_destroy_buf_item_zone: | |
1785 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f CH |
1786 | out_destroy_log_item_desc_zone: |
1787 | kmem_zone_destroy(xfs_log_item_desc_zone); | |
9f8868ff CH |
1788 | out_destroy_trans_zone: |
1789 | kmem_zone_destroy(xfs_trans_zone); | |
1790 | out_destroy_ifork_zone: | |
1791 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1792 | out_destroy_da_state_zone: |
1793 | kmem_zone_destroy(xfs_da_state_zone); | |
1794 | out_destroy_btree_cur_zone: | |
1795 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1796 | out_destroy_bmap_free_item_zone: | |
1797 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1798 | out_destroy_log_ticket_zone: | |
1799 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1800 | out_destroy_ioend_pool: | |
1801 | mempool_destroy(xfs_ioend_pool); | |
1802 | out_destroy_ioend_zone: | |
1803 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1804 | out: |
1805 | return -ENOMEM; | |
1806 | } | |
1807 | ||
1808 | STATIC void | |
1809 | xfs_destroy_zones(void) | |
1810 | { | |
8c0a8537 KS |
1811 | /* |
1812 | * Make sure all delayed rcu free are flushed before we | |
1813 | * destroy caches. | |
1814 | */ | |
1815 | rcu_barrier(); | |
3ebe7d2d | 1816 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
1817 | kmem_zone_destroy(xfs_ili_zone); |
1818 | kmem_zone_destroy(xfs_inode_zone); | |
1819 | kmem_zone_destroy(xfs_efi_zone); | |
1820 | kmem_zone_destroy(xfs_efd_zone); | |
1821 | kmem_zone_destroy(xfs_buf_item_zone); | |
e98c414f | 1822 | kmem_zone_destroy(xfs_log_item_desc_zone); |
9f8868ff CH |
1823 | kmem_zone_destroy(xfs_trans_zone); |
1824 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1825 | kmem_zone_destroy(xfs_da_state_zone); |
1826 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1827 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1828 | kmem_zone_destroy(xfs_log_ticket_zone); | |
1829 | mempool_destroy(xfs_ioend_pool); | |
1830 | kmem_zone_destroy(xfs_ioend_zone); | |
9f8868ff CH |
1831 | |
1832 | } | |
1da177e4 | 1833 | |
0bf6a5bd DC |
1834 | STATIC int __init |
1835 | xfs_init_workqueues(void) | |
1836 | { | |
c999a223 DC |
1837 | /* |
1838 | * The allocation workqueue can be used in memory reclaim situations | |
1839 | * (writepage path), and parallelism is only limited by the number of | |
1840 | * AGs in all the filesystems mounted. Hence use the default large | |
1841 | * max_active value for this workqueue. | |
1842 | */ | |
8018ec08 BF |
1843 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
1844 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0); | |
c999a223 | 1845 | if (!xfs_alloc_wq) |
5889608d | 1846 | return -ENOMEM; |
c999a223 | 1847 | |
0bf6a5bd | 1848 | return 0; |
0bf6a5bd DC |
1849 | } |
1850 | ||
39411f81 | 1851 | STATIC void |
0bf6a5bd DC |
1852 | xfs_destroy_workqueues(void) |
1853 | { | |
c999a223 | 1854 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
1855 | } |
1856 | ||
1da177e4 | 1857 | STATIC int __init |
9f8868ff | 1858 | init_xfs_fs(void) |
1da177e4 LT |
1859 | { |
1860 | int error; | |
1da177e4 | 1861 | |
30cbc591 DW |
1862 | xfs_check_ondisk_structs(); |
1863 | ||
65795910 CH |
1864 | printk(KERN_INFO XFS_VERSION_STRING " with " |
1865 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 1866 | |
9f8868ff | 1867 | xfs_dir_startup(); |
1da177e4 | 1868 | |
8758280f | 1869 | error = xfs_init_zones(); |
9f8868ff CH |
1870 | if (error) |
1871 | goto out; | |
1872 | ||
0bf6a5bd | 1873 | error = xfs_init_workqueues(); |
9f8868ff | 1874 | if (error) |
0b1b213f | 1875 | goto out_destroy_zones; |
9f8868ff | 1876 | |
0bf6a5bd DC |
1877 | error = xfs_mru_cache_init(); |
1878 | if (error) | |
1879 | goto out_destroy_wq; | |
1880 | ||
ce8e922c | 1881 | error = xfs_buf_init(); |
9f8868ff | 1882 | if (error) |
1919adda | 1883 | goto out_mru_cache_uninit; |
9f8868ff CH |
1884 | |
1885 | error = xfs_init_procfs(); | |
1886 | if (error) | |
1887 | goto out_buf_terminate; | |
1888 | ||
1889 | error = xfs_sysctl_register(); | |
1890 | if (error) | |
1891 | goto out_cleanup_procfs; | |
1da177e4 | 1892 | |
3d871226 BF |
1893 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
1894 | if (!xfs_kset) { | |
1895 | error = -ENOMEM; | |
bb230c12 | 1896 | goto out_sysctl_unregister; |
3d871226 BF |
1897 | } |
1898 | ||
80529c45 BD |
1899 | xfsstats.xs_kobj.kobject.kset = xfs_kset; |
1900 | ||
1901 | xfsstats.xs_stats = alloc_percpu(struct xfsstats); | |
1902 | if (!xfsstats.xs_stats) { | |
1903 | error = -ENOMEM; | |
1904 | goto out_kset_unregister; | |
1905 | } | |
1906 | ||
1907 | error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL, | |
bb230c12 BD |
1908 | "stats"); |
1909 | if (error) | |
80529c45 | 1910 | goto out_free_stats; |
bb230c12 | 1911 | |
65b65735 BF |
1912 | #ifdef DEBUG |
1913 | xfs_dbg_kobj.kobject.kset = xfs_kset; | |
1914 | error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); | |
a05931ce | 1915 | if (error) |
bb230c12 | 1916 | goto out_remove_stats_kobj; |
65b65735 BF |
1917 | #endif |
1918 | ||
1919 | error = xfs_qm_init(); | |
1920 | if (error) | |
bb230c12 | 1921 | goto out_remove_dbg_kobj; |
1da177e4 LT |
1922 | |
1923 | error = register_filesystem(&xfs_fs_type); | |
1924 | if (error) | |
a05931ce | 1925 | goto out_qm_exit; |
1da177e4 LT |
1926 | return 0; |
1927 | ||
a05931ce CH |
1928 | out_qm_exit: |
1929 | xfs_qm_exit(); | |
bb230c12 | 1930 | out_remove_dbg_kobj: |
65b65735 BF |
1931 | #ifdef DEBUG |
1932 | xfs_sysfs_del(&xfs_dbg_kobj); | |
bb230c12 | 1933 | out_remove_stats_kobj: |
65b65735 | 1934 | #endif |
80529c45 BD |
1935 | xfs_sysfs_del(&xfsstats.xs_kobj); |
1936 | out_free_stats: | |
1937 | free_percpu(xfsstats.xs_stats); | |
bb230c12 | 1938 | out_kset_unregister: |
3d871226 | 1939 | kset_unregister(xfs_kset); |
9f8868ff CH |
1940 | out_sysctl_unregister: |
1941 | xfs_sysctl_unregister(); | |
1942 | out_cleanup_procfs: | |
1943 | xfs_cleanup_procfs(); | |
1944 | out_buf_terminate: | |
ce8e922c | 1945 | xfs_buf_terminate(); |
9f8868ff CH |
1946 | out_mru_cache_uninit: |
1947 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
1948 | out_destroy_wq: |
1949 | xfs_destroy_workqueues(); | |
9f8868ff | 1950 | out_destroy_zones: |
8758280f | 1951 | xfs_destroy_zones(); |
9f8868ff | 1952 | out: |
1da177e4 LT |
1953 | return error; |
1954 | } | |
1955 | ||
1956 | STATIC void __exit | |
9f8868ff | 1957 | exit_xfs_fs(void) |
1da177e4 | 1958 | { |
a05931ce | 1959 | xfs_qm_exit(); |
1da177e4 | 1960 | unregister_filesystem(&xfs_fs_type); |
65b65735 BF |
1961 | #ifdef DEBUG |
1962 | xfs_sysfs_del(&xfs_dbg_kobj); | |
1963 | #endif | |
80529c45 BD |
1964 | xfs_sysfs_del(&xfsstats.xs_kobj); |
1965 | free_percpu(xfsstats.xs_stats); | |
3d871226 | 1966 | kset_unregister(xfs_kset); |
9f8868ff CH |
1967 | xfs_sysctl_unregister(); |
1968 | xfs_cleanup_procfs(); | |
ce8e922c | 1969 | xfs_buf_terminate(); |
9f8868ff | 1970 | xfs_mru_cache_uninit(); |
0bf6a5bd | 1971 | xfs_destroy_workqueues(); |
8758280f | 1972 | xfs_destroy_zones(); |
af3b6382 | 1973 | xfs_uuid_table_free(); |
1da177e4 LT |
1974 | } |
1975 | ||
1976 | module_init(init_xfs_fs); | |
1977 | module_exit(exit_xfs_fs); | |
1978 | ||
1979 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
1980 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
1981 | MODULE_LICENSE("GPL"); |