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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
a805bad5 | 3 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
7b718769 | 4 | * All Rights Reserved. |
1da177e4 | 5 | */ |
0b1b213f | 6 | |
1da177e4 | 7 | #include "xfs.h" |
70a9883c | 8 | #include "xfs_shared.h" |
6ca1c906 | 9 | #include "xfs_format.h" |
239880ef DC |
10 | #include "xfs_log_format.h" |
11 | #include "xfs_trans_resv.h" | |
1da177e4 | 12 | #include "xfs_sb.h" |
1da177e4 | 13 | #include "xfs_mount.h" |
1da177e4 | 14 | #include "xfs_inode.h" |
a844f451 | 15 | #include "xfs_btree.h" |
1da177e4 | 16 | #include "xfs_bmap.h" |
a4fbe6ab | 17 | #include "xfs_alloc.h" |
9909c4aa | 18 | #include "xfs_fsops.h" |
239880ef | 19 | #include "xfs_trans.h" |
1da177e4 | 20 | #include "xfs_buf_item.h" |
239880ef | 21 | #include "xfs_log.h" |
a67d7c5f | 22 | #include "xfs_log_priv.h" |
2b9ab5ab | 23 | #include "xfs_dir2.h" |
9f8868ff CH |
24 | #include "xfs_extfree_item.h" |
25 | #include "xfs_mru_cache.h" | |
26 | #include "xfs_inode_item.h" | |
6d8b79cf | 27 | #include "xfs_icache.h" |
0b1b213f | 28 | #include "xfs_trace.h" |
3ebe7d2d | 29 | #include "xfs_icreate_item.h" |
a4fbe6ab DC |
30 | #include "xfs_filestream.h" |
31 | #include "xfs_quota.h" | |
65b65735 | 32 | #include "xfs_sysfs.h" |
30cbc591 | 33 | #include "xfs_ondisk.h" |
5880f2d7 | 34 | #include "xfs_rmap_item.h" |
baf4bcac | 35 | #include "xfs_refcount_item.h" |
6413a014 | 36 | #include "xfs_bmap_item.h" |
5e7e605c | 37 | #include "xfs_reflink.h" |
1da177e4 | 38 | |
dddde68b | 39 | #include <linux/magic.h> |
62a877e3 | 40 | #include <linux/parser.h> |
1da177e4 | 41 | |
b87221de | 42 | static const struct super_operations xfs_super_operations; |
e292d7bc | 43 | struct bio_set xfs_ioend_bioset; |
65b65735 | 44 | |
e3aed1a0 | 45 | static struct kset *xfs_kset; /* top-level xfs sysfs dir */ |
65b65735 BF |
46 | #ifdef DEBUG |
47 | static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ | |
48 | #endif | |
1da177e4 | 49 | |
62a877e3 CH |
50 | /* |
51 | * Table driven mount option parser. | |
62a877e3 CH |
52 | */ |
53 | enum { | |
2e74af0e ES |
54 | Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev, Opt_biosize, |
55 | Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid, | |
94079285 | 56 | Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups, |
1c02d502 ES |
57 | Opt_allocsize, Opt_norecovery, Opt_inode64, Opt_inode32, Opt_ikeep, |
58 | Opt_noikeep, Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2, | |
59 | Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota, | |
60 | Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota, | |
2e74af0e ES |
61 | Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce, |
62 | Opt_discard, Opt_nodiscard, Opt_dax, Opt_err, | |
62a877e3 CH |
63 | }; |
64 | ||
a447c093 | 65 | static const match_table_t tokens = { |
2e74af0e ES |
66 | {Opt_logbufs, "logbufs=%u"}, /* number of XFS log buffers */ |
67 | {Opt_logbsize, "logbsize=%s"}, /* size of XFS log buffers */ | |
68 | {Opt_logdev, "logdev=%s"}, /* log device */ | |
69 | {Opt_rtdev, "rtdev=%s"}, /* realtime I/O device */ | |
70 | {Opt_biosize, "biosize=%u"}, /* log2 of preferred buffered io size */ | |
71 | {Opt_wsync, "wsync"}, /* safe-mode nfs compatible mount */ | |
72 | {Opt_noalign, "noalign"}, /* turn off stripe alignment */ | |
73 | {Opt_swalloc, "swalloc"}, /* turn on stripe width allocation */ | |
74 | {Opt_sunit, "sunit=%u"}, /* data volume stripe unit */ | |
75 | {Opt_swidth, "swidth=%u"}, /* data volume stripe width */ | |
76 | {Opt_nouuid, "nouuid"}, /* ignore filesystem UUID */ | |
2e74af0e ES |
77 | {Opt_grpid, "grpid"}, /* group-ID from parent directory */ |
78 | {Opt_nogrpid, "nogrpid"}, /* group-ID from current process */ | |
79 | {Opt_bsdgroups, "bsdgroups"}, /* group-ID from parent directory */ | |
80 | {Opt_sysvgroups,"sysvgroups"}, /* group-ID from current process */ | |
81 | {Opt_allocsize, "allocsize=%s"},/* preferred allocation size */ | |
82 | {Opt_norecovery,"norecovery"}, /* don't run XFS recovery */ | |
2e74af0e ES |
83 | {Opt_inode64, "inode64"}, /* inodes can be allocated anywhere */ |
84 | {Opt_inode32, "inode32"}, /* inode allocation limited to | |
85 | * XFS_MAXINUMBER_32 */ | |
86 | {Opt_ikeep, "ikeep"}, /* do not free empty inode clusters */ | |
87 | {Opt_noikeep, "noikeep"}, /* free empty inode clusters */ | |
88 | {Opt_largeio, "largeio"}, /* report large I/O sizes in stat() */ | |
89 | {Opt_nolargeio, "nolargeio"}, /* do not report large I/O sizes | |
90 | * in stat(). */ | |
91 | {Opt_attr2, "attr2"}, /* do use attr2 attribute format */ | |
92 | {Opt_noattr2, "noattr2"}, /* do not use attr2 attribute format */ | |
93 | {Opt_filestreams,"filestreams"},/* use filestreams allocator */ | |
94 | {Opt_quota, "quota"}, /* disk quotas (user) */ | |
95 | {Opt_noquota, "noquota"}, /* no quotas */ | |
96 | {Opt_usrquota, "usrquota"}, /* user quota enabled */ | |
97 | {Opt_grpquota, "grpquota"}, /* group quota enabled */ | |
98 | {Opt_prjquota, "prjquota"}, /* project quota enabled */ | |
99 | {Opt_uquota, "uquota"}, /* user quota (IRIX variant) */ | |
100 | {Opt_gquota, "gquota"}, /* group quota (IRIX variant) */ | |
101 | {Opt_pquota, "pquota"}, /* project quota (IRIX variant) */ | |
102 | {Opt_uqnoenforce,"uqnoenforce"},/* user quota limit enforcement */ | |
103 | {Opt_gqnoenforce,"gqnoenforce"},/* group quota limit enforcement */ | |
104 | {Opt_pqnoenforce,"pqnoenforce"},/* project quota limit enforcement */ | |
105 | {Opt_qnoenforce, "qnoenforce"}, /* same as uqnoenforce */ | |
106 | {Opt_discard, "discard"}, /* Discard unused blocks */ | |
107 | {Opt_nodiscard, "nodiscard"}, /* Do not discard unused blocks */ | |
2e74af0e ES |
108 | {Opt_dax, "dax"}, /* Enable direct access to bdev pages */ |
109 | {Opt_err, NULL}, | |
62a877e3 CH |
110 | }; |
111 | ||
112 | ||
a841b64d | 113 | STATIC int |
2e74af0e | 114 | suffix_kstrtoint(const substring_t *s, unsigned int base, int *res) |
a67d7c5f | 115 | { |
a17164e5 | 116 | int last, shift_left_factor = 0, _res; |
2e74af0e ES |
117 | char *value; |
118 | int ret = 0; | |
119 | ||
120 | value = match_strdup(s); | |
121 | if (!value) | |
122 | return -ENOMEM; | |
a67d7c5f DC |
123 | |
124 | last = strlen(value) - 1; | |
125 | if (value[last] == 'K' || value[last] == 'k') { | |
126 | shift_left_factor = 10; | |
127 | value[last] = '\0'; | |
128 | } | |
129 | if (value[last] == 'M' || value[last] == 'm') { | |
130 | shift_left_factor = 20; | |
131 | value[last] = '\0'; | |
132 | } | |
133 | if (value[last] == 'G' || value[last] == 'g') { | |
134 | shift_left_factor = 30; | |
135 | value[last] = '\0'; | |
136 | } | |
137 | ||
2e74af0e ES |
138 | if (kstrtoint(value, base, &_res)) |
139 | ret = -EINVAL; | |
140 | kfree(value); | |
a17164e5 | 141 | *res = _res << shift_left_factor; |
2e74af0e | 142 | return ret; |
a67d7c5f DC |
143 | } |
144 | ||
9d565ffa CH |
145 | /* |
146 | * This function fills in xfs_mount_t fields based on mount args. | |
147 | * Note: the superblock has _not_ yet been read in. | |
148 | * | |
149 | * Note that this function leaks the various device name allocations on | |
150 | * failure. The caller takes care of them. | |
a08ee40a ES |
151 | * |
152 | * *sb is const because this is also used to test options on the remount | |
153 | * path, and we don't want this to have any side effects at remount time. | |
154 | * Today this function does not change *sb, but just to future-proof... | |
9d565ffa | 155 | */ |
a67d7c5f DC |
156 | STATIC int |
157 | xfs_parseargs( | |
158 | struct xfs_mount *mp, | |
288699fe | 159 | char *options) |
a67d7c5f | 160 | { |
a08ee40a | 161 | const struct super_block *sb = mp->m_super; |
2e74af0e ES |
162 | char *p; |
163 | substring_t args[MAX_OPT_ARGS]; | |
9d565ffa CH |
164 | int dsunit = 0; |
165 | int dswidth = 0; | |
166 | int iosize = 0; | |
c8ce540d | 167 | uint8_t iosizelog = 0; |
9d565ffa | 168 | |
4f10700a DC |
169 | /* |
170 | * set up the mount name first so all the errors will refer to the | |
171 | * correct device. | |
172 | */ | |
173 | mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL); | |
174 | if (!mp->m_fsname) | |
2451337d | 175 | return -ENOMEM; |
4f10700a DC |
176 | mp->m_fsname_len = strlen(mp->m_fsname) + 1; |
177 | ||
9d565ffa CH |
178 | /* |
179 | * Copy binary VFS mount flags we are interested in. | |
180 | */ | |
bc98a42c | 181 | if (sb_rdonly(sb)) |
9d565ffa | 182 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1751e8a6 | 183 | if (sb->s_flags & SB_DIRSYNC) |
9d565ffa | 184 | mp->m_flags |= XFS_MOUNT_DIRSYNC; |
1751e8a6 | 185 | if (sb->s_flags & SB_SYNCHRONOUS) |
9d565ffa CH |
186 | mp->m_flags |= XFS_MOUNT_WSYNC; |
187 | ||
188 | /* | |
189 | * Set some default flags that could be cleared by the mount option | |
190 | * parsing. | |
191 | */ | |
9d565ffa | 192 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
a67d7c5f | 193 | |
9d565ffa CH |
194 | /* |
195 | * These can be overridden by the mount option parsing. | |
196 | */ | |
197 | mp->m_logbufs = -1; | |
198 | mp->m_logbsize = -1; | |
a67d7c5f DC |
199 | |
200 | if (!options) | |
201 | goto done; | |
202 | ||
2e74af0e ES |
203 | while ((p = strsep(&options, ",")) != NULL) { |
204 | int token; | |
205 | ||
206 | if (!*p) | |
a67d7c5f | 207 | continue; |
a67d7c5f | 208 | |
2e74af0e ES |
209 | token = match_token(p, tokens, args); |
210 | switch (token) { | |
211 | case Opt_logbufs: | |
212 | if (match_int(args, &mp->m_logbufs)) | |
2451337d | 213 | return -EINVAL; |
2e74af0e ES |
214 | break; |
215 | case Opt_logbsize: | |
216 | if (suffix_kstrtoint(args, 10, &mp->m_logbsize)) | |
2451337d | 217 | return -EINVAL; |
2e74af0e ES |
218 | break; |
219 | case Opt_logdev: | |
5b4c845e | 220 | kfree(mp->m_logname); |
2e74af0e | 221 | mp->m_logname = match_strdup(args); |
9d565ffa | 222 | if (!mp->m_logname) |
2451337d | 223 | return -ENOMEM; |
2e74af0e | 224 | break; |
2e74af0e | 225 | case Opt_rtdev: |
5b4c845e | 226 | kfree(mp->m_rtname); |
2e74af0e | 227 | mp->m_rtname = match_strdup(args); |
9d565ffa | 228 | if (!mp->m_rtname) |
2451337d | 229 | return -ENOMEM; |
2e74af0e ES |
230 | break; |
231 | case Opt_allocsize: | |
232 | case Opt_biosize: | |
233 | if (suffix_kstrtoint(args, 10, &iosize)) | |
2451337d | 234 | return -EINVAL; |
9d565ffa | 235 | iosizelog = ffs(iosize) - 1; |
2e74af0e ES |
236 | break; |
237 | case Opt_grpid: | |
238 | case Opt_bsdgroups: | |
a67d7c5f | 239 | mp->m_flags |= XFS_MOUNT_GRPID; |
2e74af0e ES |
240 | break; |
241 | case Opt_nogrpid: | |
242 | case Opt_sysvgroups: | |
a67d7c5f | 243 | mp->m_flags &= ~XFS_MOUNT_GRPID; |
2e74af0e ES |
244 | break; |
245 | case Opt_wsync: | |
9d565ffa | 246 | mp->m_flags |= XFS_MOUNT_WSYNC; |
2e74af0e ES |
247 | break; |
248 | case Opt_norecovery: | |
9d565ffa | 249 | mp->m_flags |= XFS_MOUNT_NORECOVERY; |
2e74af0e ES |
250 | break; |
251 | case Opt_noalign: | |
9d565ffa | 252 | mp->m_flags |= XFS_MOUNT_NOALIGN; |
2e74af0e ES |
253 | break; |
254 | case Opt_swalloc: | |
9d565ffa | 255 | mp->m_flags |= XFS_MOUNT_SWALLOC; |
2e74af0e ES |
256 | break; |
257 | case Opt_sunit: | |
258 | if (match_int(args, &dsunit)) | |
2451337d | 259 | return -EINVAL; |
2e74af0e ES |
260 | break; |
261 | case Opt_swidth: | |
262 | if (match_int(args, &dswidth)) | |
2451337d | 263 | return -EINVAL; |
2e74af0e ES |
264 | break; |
265 | case Opt_inode32: | |
08bf5404 | 266 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
2e74af0e ES |
267 | break; |
268 | case Opt_inode64: | |
9d565ffa | 269 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
2e74af0e ES |
270 | break; |
271 | case Opt_nouuid: | |
9d565ffa | 272 | mp->m_flags |= XFS_MOUNT_NOUUID; |
2e74af0e | 273 | break; |
2e74af0e | 274 | case Opt_ikeep: |
9d565ffa | 275 | mp->m_flags |= XFS_MOUNT_IKEEP; |
2e74af0e ES |
276 | break; |
277 | case Opt_noikeep: | |
9d565ffa | 278 | mp->m_flags &= ~XFS_MOUNT_IKEEP; |
2e74af0e ES |
279 | break; |
280 | case Opt_largeio: | |
9d565ffa | 281 | mp->m_flags &= ~XFS_MOUNT_COMPAT_IOSIZE; |
2e74af0e ES |
282 | break; |
283 | case Opt_nolargeio: | |
9d565ffa | 284 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; |
2e74af0e ES |
285 | break; |
286 | case Opt_attr2: | |
9d565ffa | 287 | mp->m_flags |= XFS_MOUNT_ATTR2; |
2e74af0e ES |
288 | break; |
289 | case Opt_noattr2: | |
9d565ffa CH |
290 | mp->m_flags &= ~XFS_MOUNT_ATTR2; |
291 | mp->m_flags |= XFS_MOUNT_NOATTR2; | |
2e74af0e ES |
292 | break; |
293 | case Opt_filestreams: | |
9d565ffa | 294 | mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
2e74af0e ES |
295 | break; |
296 | case Opt_noquota: | |
4177af3a CS |
297 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
298 | mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
299 | mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; | |
2e74af0e ES |
300 | break; |
301 | case Opt_quota: | |
302 | case Opt_uquota: | |
303 | case Opt_usrquota: | |
9d565ffa CH |
304 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
305 | XFS_UQUOTA_ENFD); | |
2e74af0e ES |
306 | break; |
307 | case Opt_qnoenforce: | |
308 | case Opt_uqnoenforce: | |
9d565ffa CH |
309 | mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
310 | mp->m_qflags &= ~XFS_UQUOTA_ENFD; | |
2e74af0e ES |
311 | break; |
312 | case Opt_pquota: | |
313 | case Opt_prjquota: | |
9d565ffa | 314 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
83e782e1 | 315 | XFS_PQUOTA_ENFD); |
2e74af0e ES |
316 | break; |
317 | case Opt_pqnoenforce: | |
9d565ffa | 318 | mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
83e782e1 | 319 | mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
ce5c767d | 320 | break; |
2e74af0e ES |
321 | case Opt_gquota: |
322 | case Opt_grpquota: | |
9d565ffa | 323 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
83e782e1 | 324 | XFS_GQUOTA_ENFD); |
2e74af0e ES |
325 | break; |
326 | case Opt_gqnoenforce: | |
9d565ffa | 327 | mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
83e782e1 | 328 | mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
2e74af0e ES |
329 | break; |
330 | case Opt_discard: | |
e84661aa | 331 | mp->m_flags |= XFS_MOUNT_DISCARD; |
2e74af0e ES |
332 | break; |
333 | case Opt_nodiscard: | |
e84661aa | 334 | mp->m_flags &= ~XFS_MOUNT_DISCARD; |
2e74af0e | 335 | break; |
cbe4dab1 | 336 | #ifdef CONFIG_FS_DAX |
2e74af0e | 337 | case Opt_dax: |
cbe4dab1 | 338 | mp->m_flags |= XFS_MOUNT_DAX; |
2e74af0e | 339 | break; |
cbe4dab1 | 340 | #endif |
2e74af0e ES |
341 | default: |
342 | xfs_warn(mp, "unknown mount option [%s].", p); | |
2451337d | 343 | return -EINVAL; |
a67d7c5f DC |
344 | } |
345 | } | |
346 | ||
9d565ffa CH |
347 | /* |
348 | * no recovery flag requires a read-only mount | |
349 | */ | |
350 | if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && | |
351 | !(mp->m_flags & XFS_MOUNT_RDONLY)) { | |
4f10700a | 352 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 353 | return -EINVAL; |
a67d7c5f DC |
354 | } |
355 | ||
9d565ffa | 356 | if ((mp->m_flags & XFS_MOUNT_NOALIGN) && (dsunit || dswidth)) { |
4f10700a DC |
357 | xfs_warn(mp, |
358 | "sunit and swidth options incompatible with the noalign option"); | |
2451337d | 359 | return -EINVAL; |
a67d7c5f DC |
360 | } |
361 | ||
7d095257 CH |
362 | #ifndef CONFIG_XFS_QUOTA |
363 | if (XFS_IS_QUOTA_RUNNING(mp)) { | |
4f10700a | 364 | xfs_warn(mp, "quota support not available in this kernel."); |
2451337d | 365 | return -EINVAL; |
7d095257 CH |
366 | } |
367 | #endif | |
368 | ||
a67d7c5f | 369 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { |
4f10700a | 370 | xfs_warn(mp, "sunit and swidth must be specified together"); |
2451337d | 371 | return -EINVAL; |
a67d7c5f DC |
372 | } |
373 | ||
374 | if (dsunit && (dswidth % dsunit != 0)) { | |
4f10700a DC |
375 | xfs_warn(mp, |
376 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
a67d7c5f | 377 | dswidth, dsunit); |
2451337d | 378 | return -EINVAL; |
a67d7c5f DC |
379 | } |
380 | ||
9d565ffa | 381 | done: |
39a45d84 | 382 | if (dsunit && !(mp->m_flags & XFS_MOUNT_NOALIGN)) { |
9d565ffa CH |
383 | /* |
384 | * At this point the superblock has not been read | |
385 | * in, therefore we do not know the block size. | |
386 | * Before the mount call ends we will convert | |
387 | * these to FSBs. | |
388 | */ | |
39a45d84 JL |
389 | mp->m_dalign = dsunit; |
390 | mp->m_swidth = dswidth; | |
9d565ffa CH |
391 | } |
392 | ||
393 | if (mp->m_logbufs != -1 && | |
394 | mp->m_logbufs != 0 && | |
395 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
396 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
4f10700a | 397 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
9d565ffa | 398 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
2451337d | 399 | return -EINVAL; |
9d565ffa CH |
400 | } |
401 | if (mp->m_logbsize != -1 && | |
402 | mp->m_logbsize != 0 && | |
403 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
404 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
405 | !is_power_of_2(mp->m_logbsize))) { | |
4f10700a DC |
406 | xfs_warn(mp, |
407 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
9d565ffa | 408 | mp->m_logbsize); |
2451337d | 409 | return -EINVAL; |
9d565ffa CH |
410 | } |
411 | ||
9d565ffa CH |
412 | if (iosizelog) { |
413 | if (iosizelog > XFS_MAX_IO_LOG || | |
414 | iosizelog < XFS_MIN_IO_LOG) { | |
4f10700a | 415 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
9d565ffa CH |
416 | iosizelog, XFS_MIN_IO_LOG, |
417 | XFS_MAX_IO_LOG); | |
2451337d | 418 | return -EINVAL; |
9d565ffa CH |
419 | } |
420 | ||
421 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
422 | mp->m_readio_log = iosizelog; | |
423 | mp->m_writeio_log = iosizelog; | |
a67d7c5f DC |
424 | } |
425 | ||
a67d7c5f DC |
426 | return 0; |
427 | } | |
428 | ||
429 | struct proc_xfs_info { | |
cbe4dab1 DC |
430 | uint64_t flag; |
431 | char *str; | |
a67d7c5f DC |
432 | }; |
433 | ||
91083269 | 434 | STATIC void |
a67d7c5f DC |
435 | xfs_showargs( |
436 | struct xfs_mount *mp, | |
437 | struct seq_file *m) | |
438 | { | |
439 | static struct proc_xfs_info xfs_info_set[] = { | |
440 | /* the few simple ones we can get from the mount struct */ | |
2e74af0e ES |
441 | { XFS_MOUNT_IKEEP, ",ikeep" }, |
442 | { XFS_MOUNT_WSYNC, ",wsync" }, | |
443 | { XFS_MOUNT_NOALIGN, ",noalign" }, | |
444 | { XFS_MOUNT_SWALLOC, ",swalloc" }, | |
445 | { XFS_MOUNT_NOUUID, ",nouuid" }, | |
446 | { XFS_MOUNT_NORECOVERY, ",norecovery" }, | |
447 | { XFS_MOUNT_ATTR2, ",attr2" }, | |
448 | { XFS_MOUNT_FILESTREAMS, ",filestreams" }, | |
449 | { XFS_MOUNT_GRPID, ",grpid" }, | |
450 | { XFS_MOUNT_DISCARD, ",discard" }, | |
451 | { XFS_MOUNT_SMALL_INUMS, ",inode32" }, | |
452 | { XFS_MOUNT_DAX, ",dax" }, | |
a67d7c5f DC |
453 | { 0, NULL } |
454 | }; | |
455 | static struct proc_xfs_info xfs_info_unset[] = { | |
456 | /* the few simple ones we can get from the mount struct */ | |
2e74af0e | 457 | { XFS_MOUNT_COMPAT_IOSIZE, ",largeio" }, |
2e74af0e | 458 | { XFS_MOUNT_SMALL_INUMS, ",inode64" }, |
a67d7c5f DC |
459 | { 0, NULL } |
460 | }; | |
461 | struct proc_xfs_info *xfs_infop; | |
462 | ||
463 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
464 | if (mp->m_flags & xfs_infop->flag) | |
465 | seq_puts(m, xfs_infop->str); | |
466 | } | |
467 | for (xfs_infop = xfs_info_unset; xfs_infop->flag; xfs_infop++) { | |
468 | if (!(mp->m_flags & xfs_infop->flag)) | |
469 | seq_puts(m, xfs_infop->str); | |
470 | } | |
471 | ||
472 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
2e74af0e | 473 | seq_printf(m, ",allocsize=%dk", |
a67d7c5f DC |
474 | (int)(1 << mp->m_writeio_log) >> 10); |
475 | ||
476 | if (mp->m_logbufs > 0) | |
2e74af0e | 477 | seq_printf(m, ",logbufs=%d", mp->m_logbufs); |
a67d7c5f | 478 | if (mp->m_logbsize > 0) |
2e74af0e | 479 | seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10); |
a67d7c5f DC |
480 | |
481 | if (mp->m_logname) | |
2e74af0e | 482 | seq_show_option(m, "logdev", mp->m_logname); |
a67d7c5f | 483 | if (mp->m_rtname) |
2e74af0e | 484 | seq_show_option(m, "rtdev", mp->m_rtname); |
a67d7c5f DC |
485 | |
486 | if (mp->m_dalign > 0) | |
2e74af0e | 487 | seq_printf(m, ",sunit=%d", |
a67d7c5f DC |
488 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
489 | if (mp->m_swidth > 0) | |
2e74af0e | 490 | seq_printf(m, ",swidth=%d", |
a67d7c5f DC |
491 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
492 | ||
493 | if (mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD)) | |
2e74af0e | 494 | seq_puts(m, ",usrquota"); |
a67d7c5f | 495 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) |
2e74af0e | 496 | seq_puts(m, ",uqnoenforce"); |
a67d7c5f | 497 | |
988abe40 | 498 | if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
83e782e1 | 499 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
2e74af0e | 500 | seq_puts(m, ",prjquota"); |
988abe40 | 501 | else |
2e74af0e | 502 | seq_puts(m, ",pqnoenforce"); |
d892d586 CS |
503 | } |
504 | if (mp->m_qflags & XFS_GQUOTA_ACCT) { | |
83e782e1 | 505 | if (mp->m_qflags & XFS_GQUOTA_ENFD) |
2e74af0e | 506 | seq_puts(m, ",grpquota"); |
988abe40 | 507 | else |
2e74af0e | 508 | seq_puts(m, ",gqnoenforce"); |
988abe40 | 509 | } |
a67d7c5f DC |
510 | |
511 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
2e74af0e | 512 | seq_puts(m, ",noquota"); |
a67d7c5f | 513 | } |
91083269 | 514 | |
c8ce540d | 515 | static uint64_t |
1da177e4 LT |
516 | xfs_max_file_offset( |
517 | unsigned int blockshift) | |
518 | { | |
519 | unsigned int pagefactor = 1; | |
520 | unsigned int bitshift = BITS_PER_LONG - 1; | |
521 | ||
522 | /* Figure out maximum filesize, on Linux this can depend on | |
523 | * the filesystem blocksize (on 32 bit platforms). | |
72deb455 | 524 | * __block_write_begin does this in an [unsigned] long long... |
ea1754a0 | 525 | * page->index << (PAGE_SHIFT - bbits) |
1da177e4 LT |
526 | * So, for page sized blocks (4K on 32 bit platforms), |
527 | * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is | |
ea1754a0 | 528 | * (((u64)PAGE_SIZE << (BITS_PER_LONG-1))-1) |
1da177e4 | 529 | * but for smaller blocksizes it is less (bbits = log2 bsize). |
1da177e4 LT |
530 | */ |
531 | ||
532 | #if BITS_PER_LONG == 32 | |
1da177e4 | 533 | ASSERT(sizeof(sector_t) == 8); |
09cbfeaf | 534 | pagefactor = PAGE_SIZE; |
1da177e4 | 535 | bitshift = BITS_PER_LONG; |
1da177e4 LT |
536 | #endif |
537 | ||
c8ce540d | 538 | return (((uint64_t)pagefactor) << bitshift) - 1; |
1da177e4 LT |
539 | } |
540 | ||
9de67c3b | 541 | /* |
12c3f05c ES |
542 | * Set parameters for inode allocation heuristics, taking into account |
543 | * filesystem size and inode32/inode64 mount options; i.e. specifically | |
544 | * whether or not XFS_MOUNT_SMALL_INUMS is set. | |
545 | * | |
546 | * Inode allocation patterns are altered only if inode32 is requested | |
547 | * (XFS_MOUNT_SMALL_INUMS), and the filesystem is sufficiently large. | |
548 | * If altered, XFS_MOUNT_32BITINODES is set as well. | |
549 | * | |
550 | * An agcount independent of that in the mount structure is provided | |
551 | * because in the growfs case, mp->m_sb.sb_agcount is not yet updated | |
552 | * to the potentially higher ag count. | |
553 | * | |
554 | * Returns the maximum AG index which may contain inodes. | |
9de67c3b | 555 | */ |
2d2194f6 | 556 | xfs_agnumber_t |
12c3f05c ES |
557 | xfs_set_inode_alloc( |
558 | struct xfs_mount *mp, | |
559 | xfs_agnumber_t agcount) | |
2d2194f6 | 560 | { |
12c3f05c | 561 | xfs_agnumber_t index; |
4056c1d0 | 562 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
563 | xfs_sb_t *sbp = &mp->m_sb; |
564 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
565 | xfs_agino_t agino; |
566 | xfs_ino_t ino; | |
2d2194f6 | 567 | |
12c3f05c ES |
568 | /* |
569 | * Calculate how much should be reserved for inodes to meet | |
570 | * the max inode percentage. Used only for inode32. | |
2d2194f6 | 571 | */ |
ef325959 | 572 | if (M_IGEO(mp)->maxicount) { |
c8ce540d | 573 | uint64_t icount; |
2d2194f6 CM |
574 | |
575 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
576 | do_div(icount, 100); | |
577 | icount += sbp->sb_agblocks - 1; | |
578 | do_div(icount, sbp->sb_agblocks); | |
579 | max_metadata = icount; | |
580 | } else { | |
9de67c3b | 581 | max_metadata = agcount; |
2d2194f6 CM |
582 | } |
583 | ||
12c3f05c | 584 | /* Get the last possible inode in the filesystem */ |
43004b2a | 585 | agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
12c3f05c ES |
586 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
587 | ||
588 | /* | |
589 | * If user asked for no more than 32-bit inodes, and the fs is | |
590 | * sufficiently large, set XFS_MOUNT_32BITINODES if we must alter | |
591 | * the allocator to accommodate the request. | |
592 | */ | |
593 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
594 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
595 | else | |
596 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
54aa61f8 | 597 | |
9de67c3b | 598 | for (index = 0; index < agcount; index++) { |
12c3f05c | 599 | struct xfs_perag *pag; |
4056c1d0 | 600 | |
12c3f05c | 601 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
2d2194f6 CM |
602 | |
603 | pag = xfs_perag_get(mp, index); | |
2d2194f6 | 604 | |
12c3f05c ES |
605 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { |
606 | if (ino > XFS_MAXINUMBER_32) { | |
607 | pag->pagi_inodeok = 0; | |
608 | pag->pagf_metadata = 0; | |
609 | } else { | |
610 | pag->pagi_inodeok = 1; | |
611 | maxagi++; | |
612 | if (index < max_metadata) | |
613 | pag->pagf_metadata = 1; | |
614 | else | |
615 | pag->pagf_metadata = 0; | |
616 | } | |
617 | } else { | |
618 | pag->pagi_inodeok = 1; | |
619 | pag->pagf_metadata = 0; | |
620 | } | |
2d2194f6 | 621 | |
2d2194f6 CM |
622 | xfs_perag_put(pag); |
623 | } | |
624 | ||
12c3f05c | 625 | return (mp->m_flags & XFS_MOUNT_32BITINODES) ? maxagi : agcount; |
2d2194f6 CM |
626 | } |
627 | ||
3180e66d | 628 | STATIC int |
1da177e4 LT |
629 | xfs_blkdev_get( |
630 | xfs_mount_t *mp, | |
631 | const char *name, | |
632 | struct block_device **bdevp) | |
633 | { | |
634 | int error = 0; | |
635 | ||
d4d77629 TH |
636 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
637 | mp); | |
1da177e4 LT |
638 | if (IS_ERR(*bdevp)) { |
639 | error = PTR_ERR(*bdevp); | |
77af574e | 640 | xfs_warn(mp, "Invalid device [%s], error=%d", name, error); |
1da177e4 LT |
641 | } |
642 | ||
2451337d | 643 | return error; |
1da177e4 LT |
644 | } |
645 | ||
3180e66d | 646 | STATIC void |
1da177e4 LT |
647 | xfs_blkdev_put( |
648 | struct block_device *bdev) | |
649 | { | |
650 | if (bdev) | |
e525fd89 | 651 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
652 | } |
653 | ||
f538d4da CH |
654 | void |
655 | xfs_blkdev_issue_flush( | |
656 | xfs_buftarg_t *buftarg) | |
657 | { | |
7582df51 | 658 | blkdev_issue_flush(buftarg->bt_bdev, GFP_NOFS, NULL); |
f538d4da | 659 | } |
1da177e4 | 660 | |
19f354d4 CH |
661 | STATIC void |
662 | xfs_close_devices( | |
663 | struct xfs_mount *mp) | |
664 | { | |
486aff5e DW |
665 | struct dax_device *dax_ddev = mp->m_ddev_targp->bt_daxdev; |
666 | ||
19f354d4 | 667 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
c032bfcf | 668 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
486aff5e DW |
669 | struct dax_device *dax_logdev = mp->m_logdev_targp->bt_daxdev; |
670 | ||
a1f69417 | 671 | xfs_free_buftarg(mp->m_logdev_targp); |
c032bfcf | 672 | xfs_blkdev_put(logdev); |
486aff5e | 673 | fs_put_dax(dax_logdev); |
19f354d4 CH |
674 | } |
675 | if (mp->m_rtdev_targp) { | |
c032bfcf | 676 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
486aff5e DW |
677 | struct dax_device *dax_rtdev = mp->m_rtdev_targp->bt_daxdev; |
678 | ||
a1f69417 | 679 | xfs_free_buftarg(mp->m_rtdev_targp); |
c032bfcf | 680 | xfs_blkdev_put(rtdev); |
486aff5e | 681 | fs_put_dax(dax_rtdev); |
19f354d4 | 682 | } |
a1f69417 | 683 | xfs_free_buftarg(mp->m_ddev_targp); |
486aff5e | 684 | fs_put_dax(dax_ddev); |
19f354d4 CH |
685 | } |
686 | ||
687 | /* | |
688 | * The file system configurations are: | |
689 | * (1) device (partition) with data and internal log | |
690 | * (2) logical volume with data and log subvolumes. | |
691 | * (3) logical volume with data, log, and realtime subvolumes. | |
692 | * | |
693 | * We only have to handle opening the log and realtime volumes here if | |
694 | * they are present. The data subvolume has already been opened by | |
695 | * get_sb_bdev() and is stored in sb->s_bdev. | |
696 | */ | |
697 | STATIC int | |
698 | xfs_open_devices( | |
9d565ffa | 699 | struct xfs_mount *mp) |
19f354d4 CH |
700 | { |
701 | struct block_device *ddev = mp->m_super->s_bdev; | |
486aff5e DW |
702 | struct dax_device *dax_ddev = fs_dax_get_by_bdev(ddev); |
703 | struct dax_device *dax_logdev = NULL, *dax_rtdev = NULL; | |
19f354d4 CH |
704 | struct block_device *logdev = NULL, *rtdev = NULL; |
705 | int error; | |
706 | ||
707 | /* | |
708 | * Open real time and log devices - order is important. | |
709 | */ | |
9d565ffa CH |
710 | if (mp->m_logname) { |
711 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 CH |
712 | if (error) |
713 | goto out; | |
486aff5e | 714 | dax_logdev = fs_dax_get_by_bdev(logdev); |
19f354d4 CH |
715 | } |
716 | ||
9d565ffa CH |
717 | if (mp->m_rtname) { |
718 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
719 | if (error) |
720 | goto out_close_logdev; | |
721 | ||
722 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
723 | xfs_warn(mp, |
724 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 725 | error = -EINVAL; |
19f354d4 CH |
726 | goto out_close_rtdev; |
727 | } | |
486aff5e | 728 | dax_rtdev = fs_dax_get_by_bdev(rtdev); |
19f354d4 CH |
729 | } |
730 | ||
731 | /* | |
732 | * Setup xfs_mount buffer target pointers | |
733 | */ | |
2451337d | 734 | error = -ENOMEM; |
486aff5e | 735 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, dax_ddev); |
19f354d4 CH |
736 | if (!mp->m_ddev_targp) |
737 | goto out_close_rtdev; | |
738 | ||
739 | if (rtdev) { | |
486aff5e | 740 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, dax_rtdev); |
19f354d4 CH |
741 | if (!mp->m_rtdev_targp) |
742 | goto out_free_ddev_targ; | |
743 | } | |
744 | ||
745 | if (logdev && logdev != ddev) { | |
486aff5e | 746 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, dax_logdev); |
19f354d4 CH |
747 | if (!mp->m_logdev_targp) |
748 | goto out_free_rtdev_targ; | |
749 | } else { | |
750 | mp->m_logdev_targp = mp->m_ddev_targp; | |
751 | } | |
752 | ||
753 | return 0; | |
754 | ||
755 | out_free_rtdev_targ: | |
756 | if (mp->m_rtdev_targp) | |
a1f69417 | 757 | xfs_free_buftarg(mp->m_rtdev_targp); |
19f354d4 | 758 | out_free_ddev_targ: |
a1f69417 | 759 | xfs_free_buftarg(mp->m_ddev_targp); |
19f354d4 | 760 | out_close_rtdev: |
d2a5e3c6 | 761 | xfs_blkdev_put(rtdev); |
486aff5e | 762 | fs_put_dax(dax_rtdev); |
19f354d4 | 763 | out_close_logdev: |
486aff5e | 764 | if (logdev && logdev != ddev) { |
19f354d4 | 765 | xfs_blkdev_put(logdev); |
486aff5e DW |
766 | fs_put_dax(dax_logdev); |
767 | } | |
19f354d4 | 768 | out: |
486aff5e | 769 | fs_put_dax(dax_ddev); |
19f354d4 CH |
770 | return error; |
771 | } | |
772 | ||
e34b562c CH |
773 | /* |
774 | * Setup xfs_mount buffer target pointers based on superblock | |
775 | */ | |
776 | STATIC int | |
777 | xfs_setup_devices( | |
778 | struct xfs_mount *mp) | |
779 | { | |
780 | int error; | |
19f354d4 | 781 | |
a96c4151 | 782 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
783 | if (error) |
784 | return error; | |
785 | ||
786 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
787 | unsigned int log_sector_size = BBSIZE; | |
788 | ||
789 | if (xfs_sb_version_hassector(&mp->m_sb)) | |
790 | log_sector_size = mp->m_sb.sb_logsectsize; | |
791 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
792 | log_sector_size); |
793 | if (error) | |
794 | return error; | |
795 | } | |
796 | if (mp->m_rtdev_targp) { | |
797 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
798 | mp->m_sb.sb_sectsize); |
799 | if (error) | |
800 | return error; | |
801 | } | |
802 | ||
803 | return 0; | |
804 | } | |
19f354d4 | 805 | |
aa6bf01d CH |
806 | STATIC int |
807 | xfs_init_mount_workqueues( | |
808 | struct xfs_mount *mp) | |
809 | { | |
78c931b8 | 810 | mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
b29c70f5 | 811 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 1, mp->m_fsname); |
78c931b8 BF |
812 | if (!mp->m_buf_workqueue) |
813 | goto out; | |
814 | ||
aa6bf01d | 815 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", |
8018ec08 | 816 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
aa6bf01d | 817 | if (!mp->m_unwritten_workqueue) |
28408243 | 818 | goto out_destroy_buf; |
aa6bf01d | 819 | |
4c2d542f | 820 | mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
8ab39f11 DC |
821 | WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND, |
822 | 0, mp->m_fsname); | |
4c2d542f DC |
823 | if (!mp->m_cil_workqueue) |
824 | goto out_destroy_unwritten; | |
5889608d DC |
825 | |
826 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", | |
7a29ac47 | 827 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
5889608d DC |
828 | if (!mp->m_reclaim_workqueue) |
829 | goto out_destroy_cil; | |
830 | ||
579b62fa | 831 | mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s", |
7a29ac47 | 832 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname); |
579b62fa | 833 | if (!mp->m_eofblocks_workqueue) |
1058d0f5 | 834 | goto out_destroy_reclaim; |
579b62fa | 835 | |
696a5620 BF |
836 | mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", WQ_FREEZABLE, 0, |
837 | mp->m_fsname); | |
838 | if (!mp->m_sync_workqueue) | |
839 | goto out_destroy_eofb; | |
840 | ||
aa6bf01d CH |
841 | return 0; |
842 | ||
696a5620 BF |
843 | out_destroy_eofb: |
844 | destroy_workqueue(mp->m_eofblocks_workqueue); | |
5889608d DC |
845 | out_destroy_reclaim: |
846 | destroy_workqueue(mp->m_reclaim_workqueue); | |
847 | out_destroy_cil: | |
848 | destroy_workqueue(mp->m_cil_workqueue); | |
4c2d542f DC |
849 | out_destroy_unwritten: |
850 | destroy_workqueue(mp->m_unwritten_workqueue); | |
78c931b8 BF |
851 | out_destroy_buf: |
852 | destroy_workqueue(mp->m_buf_workqueue); | |
aa6bf01d CH |
853 | out: |
854 | return -ENOMEM; | |
855 | } | |
856 | ||
857 | STATIC void | |
858 | xfs_destroy_mount_workqueues( | |
859 | struct xfs_mount *mp) | |
860 | { | |
696a5620 | 861 | destroy_workqueue(mp->m_sync_workqueue); |
579b62fa | 862 | destroy_workqueue(mp->m_eofblocks_workqueue); |
5889608d | 863 | destroy_workqueue(mp->m_reclaim_workqueue); |
4c2d542f | 864 | destroy_workqueue(mp->m_cil_workqueue); |
aa6bf01d | 865 | destroy_workqueue(mp->m_unwritten_workqueue); |
78c931b8 | 866 | destroy_workqueue(mp->m_buf_workqueue); |
aa6bf01d CH |
867 | } |
868 | ||
9aa05000 DC |
869 | /* |
870 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
871 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
872 | * for IO to complete so that we effectively throttle multiple callers to the | |
873 | * rate at which IO is completing. | |
874 | */ | |
875 | void | |
876 | xfs_flush_inodes( | |
877 | struct xfs_mount *mp) | |
878 | { | |
879 | struct super_block *sb = mp->m_super; | |
880 | ||
881 | if (down_read_trylock(&sb->s_umount)) { | |
0dc83bd3 | 882 | sync_inodes_sb(sb); |
9aa05000 DC |
883 | up_read(&sb->s_umount); |
884 | } | |
885 | } | |
886 | ||
bf904248 | 887 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 888 | STATIC struct inode * |
a50cd269 | 889 | xfs_fs_alloc_inode( |
1da177e4 LT |
890 | struct super_block *sb) |
891 | { | |
bf904248 | 892 | BUG(); |
493dca61 | 893 | return NULL; |
1da177e4 LT |
894 | } |
895 | ||
4831822f CH |
896 | #ifdef DEBUG |
897 | static void | |
898 | xfs_check_delalloc( | |
899 | struct xfs_inode *ip, | |
900 | int whichfork) | |
901 | { | |
902 | struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); | |
903 | struct xfs_bmbt_irec got; | |
904 | struct xfs_iext_cursor icur; | |
905 | ||
906 | if (!ifp || !xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got)) | |
907 | return; | |
908 | do { | |
909 | if (isnullstartblock(got.br_startblock)) { | |
910 | xfs_warn(ip->i_mount, | |
911 | "ino %llx %s fork has delalloc extent at [0x%llx:0x%llx]", | |
912 | ip->i_ino, | |
913 | whichfork == XFS_DATA_FORK ? "data" : "cow", | |
914 | got.br_startoff, got.br_blockcount); | |
915 | } | |
916 | } while (xfs_iext_next_extent(ifp, &icur, &got)); | |
917 | } | |
918 | #else | |
919 | #define xfs_check_delalloc(ip, whichfork) do { } while (0) | |
920 | #endif | |
921 | ||
bf904248 | 922 | /* |
99fa8cb3 | 923 | * Now that the generic code is guaranteed not to be accessing |
8179c036 | 924 | * the linux inode, we can inactivate and reclaim the inode. |
bf904248 | 925 | */ |
1da177e4 | 926 | STATIC void |
a50cd269 | 927 | xfs_fs_destroy_inode( |
848ce8f7 | 928 | struct inode *inode) |
1da177e4 | 929 | { |
848ce8f7 CH |
930 | struct xfs_inode *ip = XFS_I(inode); |
931 | ||
cca28fb8 | 932 | trace_xfs_destroy_inode(ip); |
99fa8cb3 | 933 | |
65523218 | 934 | ASSERT(!rwsem_is_locked(&inode->i_rwsem)); |
8179c036 DC |
935 | XFS_STATS_INC(ip->i_mount, vn_rele); |
936 | XFS_STATS_INC(ip->i_mount, vn_remove); | |
937 | ||
938 | xfs_inactive(ip); | |
848ce8f7 | 939 | |
4831822f CH |
940 | if (!XFS_FORCED_SHUTDOWN(ip->i_mount) && ip->i_delayed_blks) { |
941 | xfs_check_delalloc(ip, XFS_DATA_FORK); | |
942 | xfs_check_delalloc(ip, XFS_COW_FORK); | |
943 | ASSERT(0); | |
944 | } | |
945 | ||
8179c036 | 946 | XFS_STATS_INC(ip->i_mount, vn_reclaim); |
848ce8f7 CH |
947 | |
948 | /* | |
949 | * We should never get here with one of the reclaim flags already set. | |
950 | */ | |
951 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); | |
952 | ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); | |
953 | ||
954 | /* | |
57817c68 DC |
955 | * We always use background reclaim here because even if the |
956 | * inode is clean, it still may be under IO and hence we have | |
957 | * to take the flush lock. The background reclaim path handles | |
958 | * this more efficiently than we can here, so simply let background | |
959 | * reclaim tear down all inodes. | |
848ce8f7 | 960 | */ |
57817c68 | 961 | xfs_inode_set_reclaim_tag(ip); |
1da177e4 LT |
962 | } |
963 | ||
c3b1b131 CH |
964 | static void |
965 | xfs_fs_dirty_inode( | |
966 | struct inode *inode, | |
967 | int flag) | |
968 | { | |
969 | struct xfs_inode *ip = XFS_I(inode); | |
970 | struct xfs_mount *mp = ip->i_mount; | |
971 | struct xfs_trans *tp; | |
972 | ||
973 | if (!(inode->i_sb->s_flags & SB_LAZYTIME)) | |
974 | return; | |
975 | if (flag != I_DIRTY_SYNC || !(inode->i_state & I_DIRTY_TIME)) | |
976 | return; | |
977 | ||
978 | if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp)) | |
979 | return; | |
980 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
981 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
982 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); | |
983 | xfs_trans_commit(tp); | |
984 | } | |
985 | ||
07c8f675 DC |
986 | /* |
987 | * Slab object creation initialisation for the XFS inode. | |
988 | * This covers only the idempotent fields in the XFS inode; | |
989 | * all other fields need to be initialised on allocation | |
b595076a | 990 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
991 | * fields in the xfs inode that left in the initialise state |
992 | * when freeing the inode. | |
993 | */ | |
bf904248 DC |
994 | STATIC void |
995 | xfs_fs_inode_init_once( | |
07c8f675 DC |
996 | void *inode) |
997 | { | |
998 | struct xfs_inode *ip = inode; | |
999 | ||
1000 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
1001 | |
1002 | /* vfs inode */ | |
1003 | inode_init_once(VFS_I(ip)); | |
1004 | ||
1005 | /* xfs inode */ | |
07c8f675 DC |
1006 | atomic_set(&ip->i_pincount, 0); |
1007 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 | 1008 | |
653c60b6 DC |
1009 | mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
1010 | "xfsino", ip->i_ino); | |
07c8f675 DC |
1011 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
1012 | "xfsino", ip->i_ino); | |
07c8f675 DC |
1013 | } |
1014 | ||
5132ba8f DC |
1015 | /* |
1016 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
1017 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
1018 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
1019 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
1020 | * we drop the final reference on. | |
1021 | */ | |
1022 | STATIC int | |
1023 | xfs_fs_drop_inode( | |
1024 | struct inode *inode) | |
1025 | { | |
1026 | struct xfs_inode *ip = XFS_I(inode); | |
1027 | ||
17c12bcd DW |
1028 | /* |
1029 | * If this unlinked inode is in the middle of recovery, don't | |
1030 | * drop the inode just yet; log recovery will take care of | |
1031 | * that. See the comment for this inode flag. | |
1032 | */ | |
1033 | if (ip->i_flags & XFS_IRECOVERY) { | |
1034 | ASSERT(ip->i_mount->m_log->l_flags & XLOG_RECOVERY_NEEDED); | |
1035 | return 0; | |
1036 | } | |
1037 | ||
5132ba8f DC |
1038 | return generic_drop_inode(inode) || (ip->i_flags & XFS_IDONTCACHE); |
1039 | } | |
1040 | ||
a738159d CH |
1041 | STATIC void |
1042 | xfs_free_fsname( | |
1043 | struct xfs_mount *mp) | |
1044 | { | |
1045 | kfree(mp->m_fsname); | |
1046 | kfree(mp->m_rtname); | |
1047 | kfree(mp->m_logname); | |
1048 | } | |
1049 | ||
1da177e4 | 1050 | STATIC int |
69961a26 | 1051 | xfs_fs_sync_fs( |
1da177e4 LT |
1052 | struct super_block *sb, |
1053 | int wait) | |
1054 | { | |
745f6919 | 1055 | struct xfs_mount *mp = XFS_M(sb); |
1da177e4 | 1056 | |
e893bffd | 1057 | /* |
34625c66 | 1058 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 1059 | */ |
34625c66 | 1060 | if (!wait) |
69961a26 | 1061 | return 0; |
69961a26 | 1062 | |
34061f5c | 1063 | xfs_log_force(mp, XFS_LOG_SYNC); |
69961a26 | 1064 | if (laptop_mode) { |
1da177e4 LT |
1065 | /* |
1066 | * The disk must be active because we're syncing. | |
f661f1e0 | 1067 | * We schedule log work now (now that the disk is |
1da177e4 LT |
1068 | * active) instead of later (when it might not be). |
1069 | */ | |
f661f1e0 | 1070 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
1071 | } |
1072 | ||
69961a26 | 1073 | return 0; |
1da177e4 LT |
1074 | } |
1075 | ||
1076 | STATIC int | |
a50cd269 | 1077 | xfs_fs_statfs( |
726c3342 | 1078 | struct dentry *dentry, |
1da177e4 LT |
1079 | struct kstatfs *statp) |
1080 | { | |
4ca488eb CH |
1081 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
1082 | xfs_sb_t *sbp = &mp->m_sb; | |
2b0143b5 | 1083 | struct xfs_inode *ip = XFS_I(d_inode(dentry)); |
c8ce540d DW |
1084 | uint64_t fakeinos, id; |
1085 | uint64_t icount; | |
1086 | uint64_t ifree; | |
1087 | uint64_t fdblocks; | |
4ca488eb | 1088 | xfs_extlen_t lsize; |
c8ce540d | 1089 | int64_t ffree; |
4ca488eb | 1090 | |
dddde68b | 1091 | statp->f_type = XFS_SUPER_MAGIC; |
4ca488eb CH |
1092 | statp->f_namelen = MAXNAMELEN - 1; |
1093 | ||
1094 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
1095 | statp->f_fsid.val[0] = (u32)id; | |
1096 | statp->f_fsid.val[1] = (u32)(id >> 32); | |
1097 | ||
501ab323 | 1098 | icount = percpu_counter_sum(&mp->m_icount); |
e88b64ea | 1099 | ifree = percpu_counter_sum(&mp->m_ifree); |
0d485ada | 1100 | fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
4ca488eb CH |
1101 | |
1102 | spin_lock(&mp->m_sb_lock); | |
1103 | statp->f_bsize = sbp->sb_blocksize; | |
1104 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
1105 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
0d485ada DC |
1106 | spin_unlock(&mp->m_sb_lock); |
1107 | ||
52548852 | 1108 | statp->f_bfree = fdblocks - mp->m_alloc_set_aside; |
0d485ada DC |
1109 | statp->f_bavail = statp->f_bfree; |
1110 | ||
43004b2a | 1111 | fakeinos = XFS_FSB_TO_INO(mp, statp->f_bfree); |
9bb54cb5 | 1112 | statp->f_files = min(icount + fakeinos, (uint64_t)XFS_MAXINUMBER); |
ef325959 | 1113 | if (M_IGEO(mp)->maxicount) |
a19d9f88 CH |
1114 | statp->f_files = min_t(typeof(statp->f_files), |
1115 | statp->f_files, | |
ef325959 | 1116 | M_IGEO(mp)->maxicount); |
2fe33661 | 1117 | |
01f9882e ES |
1118 | /* If sb_icount overshot maxicount, report actual allocation */ |
1119 | statp->f_files = max_t(typeof(statp->f_files), | |
1120 | statp->f_files, | |
1121 | sbp->sb_icount); | |
1122 | ||
2fe33661 | 1123 | /* make sure statp->f_ffree does not underflow */ |
e88b64ea | 1124 | ffree = statp->f_files - (icount - ifree); |
c8ce540d | 1125 | statp->f_ffree = max_t(int64_t, ffree, 0); |
2fe33661 | 1126 | |
4ca488eb | 1127 | |
da5bf95e | 1128 | if ((ip->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
1129 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
1130 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 1131 | xfs_qm_statvfs(ip, statp); |
a0158315 RW |
1132 | |
1133 | if (XFS_IS_REALTIME_MOUNT(mp) && | |
1134 | (ip->i_d.di_flags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME))) { | |
1135 | statp->f_blocks = sbp->sb_rblocks; | |
1136 | statp->f_bavail = statp->f_bfree = | |
1137 | sbp->sb_frextents * sbp->sb_rextsize; | |
1138 | } | |
1139 | ||
4ca488eb | 1140 | return 0; |
1da177e4 LT |
1141 | } |
1142 | ||
d5db0f97 ES |
1143 | STATIC void |
1144 | xfs_save_resvblks(struct xfs_mount *mp) | |
1145 | { | |
c8ce540d | 1146 | uint64_t resblks = 0; |
d5db0f97 ES |
1147 | |
1148 | mp->m_resblks_save = mp->m_resblks; | |
1149 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1150 | } | |
1151 | ||
1152 | STATIC void | |
1153 | xfs_restore_resvblks(struct xfs_mount *mp) | |
1154 | { | |
c8ce540d | 1155 | uint64_t resblks; |
d5db0f97 ES |
1156 | |
1157 | if (mp->m_resblks_save) { | |
1158 | resblks = mp->m_resblks_save; | |
1159 | mp->m_resblks_save = 0; | |
1160 | } else | |
1161 | resblks = xfs_default_resblks(mp); | |
1162 | ||
1163 | xfs_reserve_blocks(mp, &resblks, NULL); | |
1164 | } | |
1165 | ||
c7eea6f7 DC |
1166 | /* |
1167 | * Trigger writeback of all the dirty metadata in the file system. | |
1168 | * | |
1169 | * This ensures that the metadata is written to their location on disk rather | |
1170 | * than just existing in transactions in the log. This means after a quiesce | |
c75921a7 DC |
1171 | * there is no log replay required to write the inodes to disk - this is the |
1172 | * primary difference between a sync and a quiesce. | |
c7eea6f7 | 1173 | * |
c75921a7 DC |
1174 | * Note: xfs_log_quiesce() stops background log work - the callers must ensure |
1175 | * it is started again when appropriate. | |
c7eea6f7 | 1176 | */ |
ddeb14f4 | 1177 | void |
c7eea6f7 DC |
1178 | xfs_quiesce_attr( |
1179 | struct xfs_mount *mp) | |
1180 | { | |
1181 | int error = 0; | |
1182 | ||
1183 | /* wait for all modifications to complete */ | |
1184 | while (atomic_read(&mp->m_active_trans) > 0) | |
1185 | delay(100); | |
1186 | ||
1187 | /* force the log to unpin objects from the now complete transactions */ | |
1188 | xfs_log_force(mp, XFS_LOG_SYNC); | |
1189 | ||
1190 | /* reclaim inodes to do any IO before the freeze completes */ | |
1191 | xfs_reclaim_inodes(mp, 0); | |
1192 | xfs_reclaim_inodes(mp, SYNC_WAIT); | |
1193 | ||
c7eea6f7 DC |
1194 | /* Push the superblock and write an unmount record */ |
1195 | error = xfs_log_sbcount(mp); | |
1196 | if (error) | |
1197 | xfs_warn(mp, "xfs_attr_quiesce: failed to log sb changes. " | |
1198 | "Frozen image may not be consistent."); | |
c7eea6f7 | 1199 | /* |
c75921a7 DC |
1200 | * Just warn here till VFS can correctly support |
1201 | * read-only remount without racing. | |
c7eea6f7 | 1202 | */ |
c75921a7 | 1203 | WARN_ON(atomic_read(&mp->m_active_trans) != 0); |
c7eea6f7 | 1204 | |
c75921a7 | 1205 | xfs_log_quiesce(mp); |
c7eea6f7 DC |
1206 | } |
1207 | ||
a08ee40a ES |
1208 | STATIC int |
1209 | xfs_test_remount_options( | |
1210 | struct super_block *sb, | |
a08ee40a ES |
1211 | char *options) |
1212 | { | |
1213 | int error = 0; | |
1214 | struct xfs_mount *tmp_mp; | |
1215 | ||
1216 | tmp_mp = kmem_zalloc(sizeof(*tmp_mp), KM_MAYFAIL); | |
1217 | if (!tmp_mp) | |
1218 | return -ENOMEM; | |
1219 | ||
1220 | tmp_mp->m_super = sb; | |
1221 | error = xfs_parseargs(tmp_mp, options); | |
1222 | xfs_free_fsname(tmp_mp); | |
6c370590 | 1223 | kmem_free(tmp_mp); |
a08ee40a ES |
1224 | |
1225 | return error; | |
1226 | } | |
1227 | ||
1da177e4 | 1228 | STATIC int |
a50cd269 | 1229 | xfs_fs_remount( |
1da177e4 LT |
1230 | struct super_block *sb, |
1231 | int *flags, | |
1232 | char *options) | |
1233 | { | |
745f6919 | 1234 | struct xfs_mount *mp = XFS_M(sb); |
9de67c3b | 1235 | xfs_sb_t *sbp = &mp->m_sb; |
62a877e3 CH |
1236 | substring_t args[MAX_OPT_ARGS]; |
1237 | char *p; | |
7884bc86 | 1238 | int error; |
1da177e4 | 1239 | |
a08ee40a | 1240 | /* First, check for complete junk; i.e. invalid options */ |
a1f69417 | 1241 | error = xfs_test_remount_options(sb, options); |
a08ee40a ES |
1242 | if (error) |
1243 | return error; | |
1244 | ||
02b9984d | 1245 | sync_filesystem(sb); |
62a877e3 CH |
1246 | while ((p = strsep(&options, ",")) != NULL) { |
1247 | int token; | |
bdd907ba | 1248 | |
62a877e3 CH |
1249 | if (!*p) |
1250 | continue; | |
48b62a1a | 1251 | |
62a877e3 CH |
1252 | token = match_token(p, tokens, args); |
1253 | switch (token) { | |
c3a58fec | 1254 | case Opt_inode64: |
12c3f05c ES |
1255 | mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
1256 | mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount); | |
c3a58fec | 1257 | break; |
2ea03929 | 1258 | case Opt_inode32: |
12c3f05c ES |
1259 | mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
1260 | mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount); | |
2ea03929 | 1261 | break; |
62a877e3 | 1262 | default: |
6efdf281 CH |
1263 | /* |
1264 | * Logically we would return an error here to prevent | |
1265 | * users from believing they might have changed | |
1266 | * mount options using remount which can't be changed. | |
1267 | * | |
1268 | * But unfortunately mount(8) adds all options from | |
1269 | * mtab and fstab to the mount arguments in some cases | |
1270 | * so we can't blindly reject options, but have to | |
1271 | * check for each specified option if it actually | |
1272 | * differs from the currently set option and only | |
1273 | * reject it if that's the case. | |
1274 | * | |
1275 | * Until that is implemented we return success for | |
1276 | * every remount request, and silently ignore all | |
1277 | * options that we can't actually change. | |
1278 | */ | |
1279 | #if 0 | |
4f10700a | 1280 | xfs_info(mp, |
08e96e1a | 1281 | "mount option \"%s\" not supported for remount", p); |
62a877e3 | 1282 | return -EINVAL; |
6efdf281 | 1283 | #else |
6c5e51da | 1284 | break; |
6efdf281 | 1285 | #endif |
48b62a1a | 1286 | } |
62a877e3 CH |
1287 | } |
1288 | ||
7884bc86 | 1289 | /* ro -> rw */ |
1751e8a6 | 1290 | if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(*flags & SB_RDONLY)) { |
bbe051c8 ES |
1291 | if (mp->m_flags & XFS_MOUNT_NORECOVERY) { |
1292 | xfs_warn(mp, | |
1293 | "ro->rw transition prohibited on norecovery mount"); | |
1294 | return -EINVAL; | |
1295 | } | |
1296 | ||
d0a58e83 ES |
1297 | if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && |
1298 | xfs_sb_has_ro_compat_feature(sbp, | |
1299 | XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) { | |
1300 | xfs_warn(mp, | |
1301 | "ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem", | |
1302 | (sbp->sb_features_ro_compat & | |
1303 | XFS_SB_FEAT_RO_COMPAT_UNKNOWN)); | |
1304 | return -EINVAL; | |
1305 | } | |
1306 | ||
62a877e3 | 1307 | mp->m_flags &= ~XFS_MOUNT_RDONLY; |
7884bc86 CH |
1308 | |
1309 | /* | |
1310 | * If this is the first remount to writeable state we | |
1311 | * might have some superblock changes to update. | |
1312 | */ | |
61e63ecb DC |
1313 | if (mp->m_update_sb) { |
1314 | error = xfs_sync_sb(mp, false); | |
7884bc86 | 1315 | if (error) { |
4f10700a | 1316 | xfs_warn(mp, "failed to write sb changes"); |
7884bc86 CH |
1317 | return error; |
1318 | } | |
61e63ecb | 1319 | mp->m_update_sb = false; |
7884bc86 | 1320 | } |
cbe132a8 DC |
1321 | |
1322 | /* | |
1323 | * Fill out the reserve pool if it is empty. Use the stashed | |
1324 | * value if it is non-zero, otherwise go with the default. | |
1325 | */ | |
d5db0f97 | 1326 | xfs_restore_resvblks(mp); |
f661f1e0 | 1327 | xfs_log_work_queue(mp); |
174edb0e DW |
1328 | |
1329 | /* Recover any CoW blocks that never got remapped. */ | |
1330 | error = xfs_reflink_recover_cow(mp); | |
1331 | if (error) { | |
1332 | xfs_err(mp, | |
1333 | "Error %d recovering leftover CoW allocations.", error); | |
1334 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
1335 | return error; | |
1336 | } | |
ed30dcbd | 1337 | xfs_start_block_reaping(mp); |
84d69619 DW |
1338 | |
1339 | /* Create the per-AG metadata reservation pool .*/ | |
1340 | error = xfs_fs_reserve_ag_blocks(mp); | |
1341 | if (error && error != -ENOSPC) | |
1342 | return error; | |
62a877e3 CH |
1343 | } |
1344 | ||
1345 | /* rw -> ro */ | |
1751e8a6 | 1346 | if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & SB_RDONLY)) { |
d6b636eb DW |
1347 | /* |
1348 | * Cancel background eofb scanning so it cannot race with the | |
1349 | * final log force+buftarg wait and deadlock the remount. | |
1350 | */ | |
ed30dcbd | 1351 | xfs_stop_block_reaping(mp); |
d6b636eb | 1352 | |
10ddf64e | 1353 | /* Get rid of any leftover CoW reservations... */ |
10ddf64e DW |
1354 | error = xfs_icache_free_cowblocks(mp, NULL); |
1355 | if (error) { | |
1356 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
1357 | return error; | |
1358 | } | |
1359 | ||
84d69619 DW |
1360 | /* Free the per-AG metadata reservation pool. */ |
1361 | error = xfs_fs_unreserve_ag_blocks(mp); | |
1362 | if (error) { | |
1363 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
1364 | return error; | |
1365 | } | |
1366 | ||
cbe132a8 | 1367 | /* |
34061f5c DC |
1368 | * Before we sync the metadata, we need to free up the reserve |
1369 | * block pool so that the used block count in the superblock on | |
1370 | * disk is correct at the end of the remount. Stash the current | |
1371 | * reserve pool size so that if we get remounted rw, we can | |
1372 | * return it to the same size. | |
cbe132a8 | 1373 | */ |
d5db0f97 | 1374 | xfs_save_resvblks(mp); |
fa5a4f57 | 1375 | |
76bf105c | 1376 | xfs_quiesce_attr(mp); |
48b62a1a CH |
1377 | mp->m_flags |= XFS_MOUNT_RDONLY; |
1378 | } | |
1379 | ||
62a877e3 | 1380 | return 0; |
1da177e4 LT |
1381 | } |
1382 | ||
9909c4aa CH |
1383 | /* |
1384 | * Second stage of a freeze. The data is already frozen so we only | |
61e63ecb DC |
1385 | * need to take care of the metadata. Once that's done sync the superblock |
1386 | * to the log to dirty it in case of a crash while frozen. This ensures that we | |
1387 | * will recover the unlinked inode lists on the next mount. | |
9909c4aa | 1388 | */ |
c4be0c1d TS |
1389 | STATIC int |
1390 | xfs_fs_freeze( | |
1da177e4 LT |
1391 | struct super_block *sb) |
1392 | { | |
9909c4aa CH |
1393 | struct xfs_mount *mp = XFS_M(sb); |
1394 | ||
ed30dcbd | 1395 | xfs_stop_block_reaping(mp); |
d5db0f97 | 1396 | xfs_save_resvblks(mp); |
76bf105c | 1397 | xfs_quiesce_attr(mp); |
61e63ecb | 1398 | return xfs_sync_sb(mp, true); |
1da177e4 LT |
1399 | } |
1400 | ||
d5db0f97 ES |
1401 | STATIC int |
1402 | xfs_fs_unfreeze( | |
1403 | struct super_block *sb) | |
1404 | { | |
1405 | struct xfs_mount *mp = XFS_M(sb); | |
1406 | ||
1407 | xfs_restore_resvblks(mp); | |
f661f1e0 | 1408 | xfs_log_work_queue(mp); |
ed30dcbd | 1409 | xfs_start_block_reaping(mp); |
d5db0f97 ES |
1410 | return 0; |
1411 | } | |
1412 | ||
1da177e4 | 1413 | STATIC int |
a50cd269 | 1414 | xfs_fs_show_options( |
1da177e4 | 1415 | struct seq_file *m, |
34c80b1d | 1416 | struct dentry *root) |
1da177e4 | 1417 | { |
91083269 ES |
1418 | xfs_showargs(XFS_M(root->d_sb), m); |
1419 | return 0; | |
1da177e4 LT |
1420 | } |
1421 | ||
f8f15e42 CH |
1422 | /* |
1423 | * This function fills in xfs_mount_t fields based on mount args. | |
1424 | * Note: the superblock _has_ now been read in. | |
1425 | */ | |
1426 | STATIC int | |
1427 | xfs_finish_flags( | |
f8f15e42 CH |
1428 | struct xfs_mount *mp) |
1429 | { | |
1430 | int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); | |
1431 | ||
025dfdaf | 1432 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
f8f15e42 | 1433 | if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
9d565ffa CH |
1434 | if (mp->m_logbsize <= 0 && |
1435 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
f8f15e42 | 1436 | mp->m_logbsize = mp->m_sb.sb_logsunit; |
9d565ffa CH |
1437 | } else if (mp->m_logbsize > 0 && |
1438 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
4f10700a DC |
1439 | xfs_warn(mp, |
1440 | "logbuf size must be greater than or equal to log stripe size"); | |
2451337d | 1441 | return -EINVAL; |
f8f15e42 CH |
1442 | } |
1443 | } else { | |
1444 | /* Fail a mount if the logbuf is larger than 32K */ | |
9d565ffa | 1445 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
4f10700a DC |
1446 | xfs_warn(mp, |
1447 | "logbuf size for version 1 logs must be 16K or 32K"); | |
2451337d | 1448 | return -EINVAL; |
f8f15e42 CH |
1449 | } |
1450 | } | |
1451 | ||
d3eaace8 DC |
1452 | /* |
1453 | * V5 filesystems always use attr2 format for attributes. | |
1454 | */ | |
1455 | if (xfs_sb_version_hascrc(&mp->m_sb) && | |
1456 | (mp->m_flags & XFS_MOUNT_NOATTR2)) { | |
2e74af0e ES |
1457 | xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. " |
1458 | "attr2 is always enabled for V5 filesystems."); | |
2451337d | 1459 | return -EINVAL; |
d3eaace8 DC |
1460 | } |
1461 | ||
f8f15e42 CH |
1462 | /* |
1463 | * mkfs'ed attr2 will turn on attr2 mount unless explicitly | |
1464 | * told by noattr2 to turn it off | |
1465 | */ | |
1466 | if (xfs_sb_version_hasattr2(&mp->m_sb) && | |
9d565ffa | 1467 | !(mp->m_flags & XFS_MOUNT_NOATTR2)) |
f8f15e42 CH |
1468 | mp->m_flags |= XFS_MOUNT_ATTR2; |
1469 | ||
1470 | /* | |
1471 | * prohibit r/w mounts of read-only filesystems | |
1472 | */ | |
1473 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
4f10700a DC |
1474 | xfs_warn(mp, |
1475 | "cannot mount a read-only filesystem as read-write"); | |
2451337d | 1476 | return -EROFS; |
f8f15e42 CH |
1477 | } |
1478 | ||
d892d586 CS |
1479 | if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
1480 | (mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && | |
1481 | !xfs_sb_version_has_pquotino(&mp->m_sb)) { | |
1482 | xfs_warn(mp, | |
1483 | "Super block does not support project and group quota together"); | |
2451337d | 1484 | return -EINVAL; |
d892d586 CS |
1485 | } |
1486 | ||
f8f15e42 CH |
1487 | return 0; |
1488 | } | |
1489 | ||
5681ca40 DC |
1490 | static int |
1491 | xfs_init_percpu_counters( | |
1492 | struct xfs_mount *mp) | |
1493 | { | |
1494 | int error; | |
1495 | ||
1496 | error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL); | |
1497 | if (error) | |
5e9383f9 | 1498 | return -ENOMEM; |
5681ca40 DC |
1499 | |
1500 | error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL); | |
1501 | if (error) | |
1502 | goto free_icount; | |
1503 | ||
1504 | error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL); | |
1505 | if (error) | |
1506 | goto free_ifree; | |
1507 | ||
9fe82b8c DW |
1508 | error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL); |
1509 | if (error) | |
1510 | goto free_fdblocks; | |
1511 | ||
5681ca40 DC |
1512 | return 0; |
1513 | ||
9fe82b8c DW |
1514 | free_fdblocks: |
1515 | percpu_counter_destroy(&mp->m_fdblocks); | |
5681ca40 DC |
1516 | free_ifree: |
1517 | percpu_counter_destroy(&mp->m_ifree); | |
1518 | free_icount: | |
1519 | percpu_counter_destroy(&mp->m_icount); | |
1520 | return -ENOMEM; | |
1521 | } | |
1522 | ||
1523 | void | |
1524 | xfs_reinit_percpu_counters( | |
1525 | struct xfs_mount *mp) | |
1526 | { | |
1527 | percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount); | |
1528 | percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree); | |
1529 | percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks); | |
1530 | } | |
1531 | ||
1532 | static void | |
1533 | xfs_destroy_percpu_counters( | |
1534 | struct xfs_mount *mp) | |
1535 | { | |
1536 | percpu_counter_destroy(&mp->m_icount); | |
1537 | percpu_counter_destroy(&mp->m_ifree); | |
1538 | percpu_counter_destroy(&mp->m_fdblocks); | |
9fe82b8c DW |
1539 | ASSERT(XFS_FORCED_SHUTDOWN(mp) || |
1540 | percpu_counter_sum(&mp->m_delalloc_blks) == 0); | |
1541 | percpu_counter_destroy(&mp->m_delalloc_blks); | |
5681ca40 DC |
1542 | } |
1543 | ||
72c44e35 BF |
1544 | static struct xfs_mount * |
1545 | xfs_mount_alloc( | |
1546 | struct super_block *sb) | |
1da177e4 | 1547 | { |
72c44e35 | 1548 | struct xfs_mount *mp; |
bdd907ba | 1549 | |
c962fb79 CH |
1550 | mp = kzalloc(sizeof(struct xfs_mount), GFP_KERNEL); |
1551 | if (!mp) | |
72c44e35 | 1552 | return NULL; |
1da177e4 | 1553 | |
72c44e35 | 1554 | mp->m_super = sb; |
c962fb79 | 1555 | spin_lock_init(&mp->m_sb_lock); |
72c44e35 BF |
1556 | spin_lock_init(&mp->m_agirotor_lock); |
1557 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC); | |
1558 | spin_lock_init(&mp->m_perag_lock); | |
c962fb79 CH |
1559 | mutex_init(&mp->m_growlock); |
1560 | atomic_set(&mp->m_active_trans, 0); | |
7e18530b | 1561 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
579b62fa | 1562 | INIT_DELAYED_WORK(&mp->m_eofblocks_work, xfs_eofblocks_worker); |
83104d44 | 1563 | INIT_DELAYED_WORK(&mp->m_cowblocks_work, xfs_cowblocks_worker); |
e3aed1a0 | 1564 | mp->m_kobj.kobject.kset = xfs_kset; |
15a268d9 DW |
1565 | /* |
1566 | * We don't create the finobt per-ag space reservation until after log | |
1567 | * recovery, so we must set this to true so that an ifree transaction | |
1568 | * started during log recovery will not depend on space reservations | |
1569 | * for finobt expansion. | |
1570 | */ | |
1571 | mp->m_finobt_nores = true; | |
72c44e35 BF |
1572 | return mp; |
1573 | } | |
74394496 | 1574 | |
72c44e35 BF |
1575 | |
1576 | STATIC int | |
1577 | xfs_fs_fill_super( | |
1578 | struct super_block *sb, | |
1579 | void *data, | |
1580 | int silent) | |
1581 | { | |
1582 | struct inode *root; | |
1583 | struct xfs_mount *mp = NULL; | |
1584 | int flags = 0, error = -ENOMEM; | |
1585 | ||
1586 | /* | |
1587 | * allocate mp and do all low-level struct initializations before we | |
1588 | * attach it to the super | |
1589 | */ | |
1590 | mp = xfs_mount_alloc(sb); | |
1591 | if (!mp) | |
1592 | goto out; | |
b267ce99 | 1593 | sb->s_fs_info = mp; |
1da177e4 | 1594 | |
288699fe | 1595 | error = xfs_parseargs(mp, (char *)data); |
745f6919 | 1596 | if (error) |
9d565ffa | 1597 | goto out_free_fsname; |
1da177e4 LT |
1598 | |
1599 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1600 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1601 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1602 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1603 | sb->s_qcop = &xfs_quotactl_operations; |
17ef4fdd | 1604 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
fcafb71b | 1605 | #endif |
a50cd269 | 1606 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1607 | |
dae5cd81 DC |
1608 | /* |
1609 | * Delay mount work if the debug hook is set. This is debug | |
1610 | * instrumention to coordinate simulation of xfs mount failures with | |
1611 | * VFS superblock operations | |
1612 | */ | |
1613 | if (xfs_globals.mount_delay) { | |
1614 | xfs_notice(mp, "Delaying mount for %d seconds.", | |
1615 | xfs_globals.mount_delay); | |
1616 | msleep(xfs_globals.mount_delay * 1000); | |
1617 | } | |
1618 | ||
9d565ffa | 1619 | if (silent) |
f8f15e42 CH |
1620 | flags |= XFS_MFSI_QUIET; |
1621 | ||
9d565ffa | 1622 | error = xfs_open_devices(mp); |
19f354d4 | 1623 | if (error) |
288699fe | 1624 | goto out_free_fsname; |
f8f15e42 | 1625 | |
2451337d | 1626 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1627 | if (error) |
1628 | goto out_close_devices; | |
c962fb79 | 1629 | |
5681ca40 | 1630 | error = xfs_init_percpu_counters(mp); |
aa6bf01d CH |
1631 | if (error) |
1632 | goto out_destroy_workqueues; | |
1633 | ||
225e4635 BD |
1634 | /* Allocate stats memory before we do operations that might use it */ |
1635 | mp->m_stats.xs_stats = alloc_percpu(struct xfsstats); | |
1636 | if (!mp->m_stats.xs_stats) { | |
f9d460b3 | 1637 | error = -ENOMEM; |
225e4635 BD |
1638 | goto out_destroy_counters; |
1639 | } | |
1640 | ||
f8f15e42 CH |
1641 | error = xfs_readsb(mp, flags); |
1642 | if (error) | |
225e4635 | 1643 | goto out_free_stats; |
9d565ffa CH |
1644 | |
1645 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1646 | if (error) |
effa2eda | 1647 | goto out_free_sb; |
f8f15e42 | 1648 | |
e34b562c | 1649 | error = xfs_setup_devices(mp); |
19f354d4 | 1650 | if (error) |
effa2eda | 1651 | goto out_free_sb; |
f8f15e42 | 1652 | |
f8f15e42 CH |
1653 | error = xfs_filestream_mount(mp); |
1654 | if (error) | |
effa2eda | 1655 | goto out_free_sb; |
f8f15e42 | 1656 | |
704b2907 DC |
1657 | /* |
1658 | * we must configure the block size in the superblock before we run the | |
1659 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1660 | */ |
dddde68b | 1661 | sb->s_magic = XFS_SUPER_MAGIC; |
4ca488eb CH |
1662 | sb->s_blocksize = mp->m_sb.sb_blocksize; |
1663 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
1da177e4 | 1664 | sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); |
8de52778 | 1665 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 | 1666 | sb->s_time_gran = 1; |
22b13969 DD |
1667 | sb->s_time_min = S32_MIN; |
1668 | sb->s_time_max = S32_MAX; | |
adfb5fb4 CH |
1669 | sb->s_iflags |= SB_I_CGROUPWB; |
1670 | ||
1da177e4 LT |
1671 | set_posix_acl_flag(sb); |
1672 | ||
dc037ad7 DC |
1673 | /* version 5 superblocks support inode version counters. */ |
1674 | if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) | |
357fdad0 | 1675 | sb->s_flags |= SB_I_VERSION; |
dc037ad7 | 1676 | |
cbe4dab1 | 1677 | if (mp->m_flags & XFS_MOUNT_DAX) { |
80660f20 | 1678 | bool rtdev_is_dax = false, datadev_is_dax; |
ba23cba9 | 1679 | |
cbe4dab1 | 1680 | xfs_warn(mp, |
1e937cdd TK |
1681 | "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); |
1682 | ||
80660f20 DJ |
1683 | datadev_is_dax = bdev_dax_supported(mp->m_ddev_targp->bt_bdev, |
1684 | sb->s_blocksize); | |
ba23cba9 | 1685 | if (mp->m_rtdev_targp) |
80660f20 DJ |
1686 | rtdev_is_dax = bdev_dax_supported( |
1687 | mp->m_rtdev_targp->bt_bdev, sb->s_blocksize); | |
1688 | if (!rtdev_is_dax && !datadev_is_dax) { | |
cbe4dab1 | 1689 | xfs_alert(mp, |
1e937cdd | 1690 | "DAX unsupported by block device. Turning off DAX."); |
cbe4dab1 DC |
1691 | mp->m_flags &= ~XFS_MOUNT_DAX; |
1692 | } | |
b6e03c10 | 1693 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { |
e54b5bf9 | 1694 | xfs_alert(mp, |
1e369b0e | 1695 | "DAX and reflink cannot be used together!"); |
b6e03c10 DW |
1696 | error = -EINVAL; |
1697 | goto out_filestream_unmount; | |
1698 | } | |
cbe4dab1 DC |
1699 | } |
1700 | ||
1e6fa688 KN |
1701 | if (mp->m_flags & XFS_MOUNT_DISCARD) { |
1702 | struct request_queue *q = bdev_get_queue(sb->s_bdev); | |
1703 | ||
1704 | if (!blk_queue_discard(q)) { | |
1705 | xfs_warn(mp, "mounting with \"discard\" option, but " | |
1706 | "the device does not support discard"); | |
1707 | mp->m_flags &= ~XFS_MOUNT_DISCARD; | |
1708 | } | |
1709 | } | |
1710 | ||
66ae56a5 CH |
1711 | if (xfs_sb_version_hasreflink(&mp->m_sb)) { |
1712 | if (mp->m_sb.sb_rblocks) { | |
1713 | xfs_alert(mp, | |
c14632dd | 1714 | "reflink not compatible with realtime device!"); |
66ae56a5 CH |
1715 | error = -EINVAL; |
1716 | goto out_filestream_unmount; | |
1717 | } | |
1718 | ||
1719 | if (xfs_globals.always_cow) { | |
1720 | xfs_info(mp, "using DEBUG-only always_cow mode."); | |
1721 | mp->m_always_cow = true; | |
1722 | } | |
c14632dd DW |
1723 | } |
1724 | ||
76883f79 | 1725 | if (xfs_sb_version_hasrmapbt(&mp->m_sb) && mp->m_sb.sb_rblocks) { |
1c0607ac | 1726 | xfs_alert(mp, |
76883f79 DW |
1727 | "reverse mapping btree not compatible with realtime device!"); |
1728 | error = -EINVAL; | |
1729 | goto out_filestream_unmount; | |
738f57c1 | 1730 | } |
1c0607ac | 1731 | |
8a00ebe4 | 1732 | error = xfs_mountfs(mp); |
2bcf6e97 | 1733 | if (error) |
7e18530b | 1734 | goto out_filestream_unmount; |
704b2907 | 1735 | |
01651646 | 1736 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1737 | if (!root) { |
2451337d | 1738 | error = -ENOENT; |
8a00ebe4 | 1739 | goto out_unmount; |
cbc89dcf | 1740 | } |
48fde701 | 1741 | sb->s_root = d_make_root(root); |
f3dcc13f | 1742 | if (!sb->s_root) { |
2451337d | 1743 | error = -ENOMEM; |
8a00ebe4 | 1744 | goto out_unmount; |
1da177e4 | 1745 | } |
74394496 | 1746 | |
1da177e4 | 1747 | return 0; |
33c7a2bc | 1748 | |
7e18530b | 1749 | out_filestream_unmount: |
120226c1 | 1750 | xfs_filestream_unmount(mp); |
effa2eda CH |
1751 | out_free_sb: |
1752 | xfs_freesb(mp); | |
225e4635 BD |
1753 | out_free_stats: |
1754 | free_percpu(mp->m_stats.xs_stats); | |
9d565ffa | 1755 | out_destroy_counters: |
5681ca40 | 1756 | xfs_destroy_percpu_counters(mp); |
225e4635 | 1757 | out_destroy_workqueues: |
aa6bf01d | 1758 | xfs_destroy_mount_workqueues(mp); |
61ba35de | 1759 | out_close_devices: |
19f354d4 | 1760 | xfs_close_devices(mp); |
9d565ffa | 1761 | out_free_fsname: |
c9fbd7bb | 1762 | sb->s_fs_info = NULL; |
9d565ffa | 1763 | xfs_free_fsname(mp); |
c962fb79 | 1764 | kfree(mp); |
9d565ffa | 1765 | out: |
2451337d | 1766 | return error; |
f8f15e42 | 1767 | |
2bcf6e97 | 1768 | out_unmount: |
e48ad316 | 1769 | xfs_filestream_unmount(mp); |
19f354d4 | 1770 | xfs_unmountfs(mp); |
6203300e | 1771 | goto out_free_sb; |
1da177e4 LT |
1772 | } |
1773 | ||
5681ca40 DC |
1774 | STATIC void |
1775 | xfs_fs_put_super( | |
1776 | struct super_block *sb) | |
1777 | { | |
1778 | struct xfs_mount *mp = XFS_M(sb); | |
1779 | ||
c9fbd7bb DC |
1780 | /* if ->fill_super failed, we have no mount to tear down */ |
1781 | if (!sb->s_fs_info) | |
1782 | return; | |
1783 | ||
4225441a | 1784 | xfs_notice(mp, "Unmounting Filesystem"); |
5681ca40 DC |
1785 | xfs_filestream_unmount(mp); |
1786 | xfs_unmountfs(mp); | |
1787 | ||
1788 | xfs_freesb(mp); | |
225e4635 | 1789 | free_percpu(mp->m_stats.xs_stats); |
5681ca40 DC |
1790 | xfs_destroy_percpu_counters(mp); |
1791 | xfs_destroy_mount_workqueues(mp); | |
1792 | xfs_close_devices(mp); | |
c9fbd7bb DC |
1793 | |
1794 | sb->s_fs_info = NULL; | |
5681ca40 DC |
1795 | xfs_free_fsname(mp); |
1796 | kfree(mp); | |
1797 | } | |
1798 | ||
152a0836 AV |
1799 | STATIC struct dentry * |
1800 | xfs_fs_mount( | |
1da177e4 LT |
1801 | struct file_system_type *fs_type, |
1802 | int flags, | |
1803 | const char *dev_name, | |
152a0836 | 1804 | void *data) |
1da177e4 | 1805 | { |
152a0836 | 1806 | return mount_bdev(fs_type, flags, dev_name, data, xfs_fs_fill_super); |
a50cd269 NS |
1807 | } |
1808 | ||
0a234c6d | 1809 | static long |
8daaa831 | 1810 | xfs_fs_nr_cached_objects( |
9b17c623 | 1811 | struct super_block *sb, |
4101b624 | 1812 | struct shrink_control *sc) |
8daaa831 | 1813 | { |
c9fbd7bb DC |
1814 | /* Paranoia: catch incorrect calls during mount setup or teardown */ |
1815 | if (WARN_ON_ONCE(!sb->s_fs_info)) | |
1816 | return 0; | |
8daaa831 DC |
1817 | return xfs_reclaim_inodes_count(XFS_M(sb)); |
1818 | } | |
1819 | ||
0a234c6d | 1820 | static long |
8daaa831 DC |
1821 | xfs_fs_free_cached_objects( |
1822 | struct super_block *sb, | |
4101b624 | 1823 | struct shrink_control *sc) |
8daaa831 | 1824 | { |
4101b624 | 1825 | return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); |
8daaa831 DC |
1826 | } |
1827 | ||
b87221de | 1828 | static const struct super_operations xfs_super_operations = { |
a50cd269 NS |
1829 | .alloc_inode = xfs_fs_alloc_inode, |
1830 | .destroy_inode = xfs_fs_destroy_inode, | |
c3b1b131 | 1831 | .dirty_inode = xfs_fs_dirty_inode, |
5132ba8f | 1832 | .drop_inode = xfs_fs_drop_inode, |
a50cd269 | 1833 | .put_super = xfs_fs_put_super, |
69961a26 | 1834 | .sync_fs = xfs_fs_sync_fs, |
c4be0c1d | 1835 | .freeze_fs = xfs_fs_freeze, |
d5db0f97 | 1836 | .unfreeze_fs = xfs_fs_unfreeze, |
a50cd269 NS |
1837 | .statfs = xfs_fs_statfs, |
1838 | .remount_fs = xfs_fs_remount, | |
1839 | .show_options = xfs_fs_show_options, | |
8daaa831 DC |
1840 | .nr_cached_objects = xfs_fs_nr_cached_objects, |
1841 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1da177e4 LT |
1842 | }; |
1843 | ||
5085b607 | 1844 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1845 | .owner = THIS_MODULE, |
1846 | .name = "xfs", | |
152a0836 | 1847 | .mount = xfs_fs_mount, |
1da177e4 LT |
1848 | .kill_sb = kill_block_super, |
1849 | .fs_flags = FS_REQUIRES_DEV, | |
1850 | }; | |
7f78e035 | 1851 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1852 | |
9f8868ff CH |
1853 | STATIC int __init |
1854 | xfs_init_zones(void) | |
1855 | { | |
82cb1417 | 1856 | if (bioset_init(&xfs_ioend_bioset, 4 * (PAGE_SIZE / SECTOR_SIZE), |
011067b0 | 1857 | offsetof(struct xfs_ioend, io_inline_bio), |
e292d7bc | 1858 | BIOSET_NEED_BVECS)) |
bf904248 | 1859 | goto out; |
9f8868ff | 1860 | |
9f8868ff CH |
1861 | xfs_log_ticket_zone = kmem_zone_init(sizeof(xlog_ticket_t), |
1862 | "xfs_log_ticket"); | |
1863 | if (!xfs_log_ticket_zone) | |
0e51a8e1 | 1864 | goto out_free_ioend_bioset; |
9f8868ff | 1865 | |
e66a4c67 | 1866 | xfs_bmap_free_item_zone = kmem_zone_init( |
310a75a3 | 1867 | sizeof(struct xfs_extent_free_item), |
e66a4c67 | 1868 | "xfs_bmap_free_item"); |
9f8868ff CH |
1869 | if (!xfs_bmap_free_item_zone) |
1870 | goto out_destroy_log_ticket_zone; | |
bf904248 | 1871 | |
9f8868ff CH |
1872 | xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t), |
1873 | "xfs_btree_cur"); | |
1874 | if (!xfs_btree_cur_zone) | |
1875 | goto out_destroy_bmap_free_item_zone; | |
1876 | ||
1877 | xfs_da_state_zone = kmem_zone_init(sizeof(xfs_da_state_t), | |
1878 | "xfs_da_state"); | |
1879 | if (!xfs_da_state_zone) | |
1880 | goto out_destroy_btree_cur_zone; | |
1881 | ||
3ba738df | 1882 | xfs_ifork_zone = kmem_zone_init(sizeof(struct xfs_ifork), "xfs_ifork"); |
9f8868ff | 1883 | if (!xfs_ifork_zone) |
1d9025e5 | 1884 | goto out_destroy_da_state_zone; |
9f8868ff CH |
1885 | |
1886 | xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans"); | |
1887 | if (!xfs_trans_zone) | |
1888 | goto out_destroy_ifork_zone; | |
1889 | ||
e98c414f | 1890 | |
9f8868ff CH |
1891 | /* |
1892 | * The size of the zone allocated buf log item is the maximum | |
1893 | * size possible under XFS. This wastes a little bit of memory, | |
1894 | * but it is much faster. | |
1895 | */ | |
77c1a08f DC |
1896 | xfs_buf_item_zone = kmem_zone_init(sizeof(struct xfs_buf_log_item), |
1897 | "xfs_buf_item"); | |
9f8868ff | 1898 | if (!xfs_buf_item_zone) |
e6631f85 | 1899 | goto out_destroy_trans_zone; |
9f8868ff CH |
1900 | |
1901 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
1902 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * | |
1903 | sizeof(xfs_extent_t))), "xfs_efd_item"); | |
1904 | if (!xfs_efd_zone) | |
1905 | goto out_destroy_buf_item_zone; | |
1906 | ||
1907 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
1908 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * | |
1909 | sizeof(xfs_extent_t))), "xfs_efi_item"); | |
1910 | if (!xfs_efi_zone) | |
1911 | goto out_destroy_efd_zone; | |
1912 | ||
1913 | xfs_inode_zone = | |
1914 | kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode", | |
5d097056 VD |
1915 | KM_ZONE_HWALIGN | KM_ZONE_RECLAIM | KM_ZONE_SPREAD | |
1916 | KM_ZONE_ACCOUNT, xfs_fs_inode_init_once); | |
9f8868ff CH |
1917 | if (!xfs_inode_zone) |
1918 | goto out_destroy_efi_zone; | |
1919 | ||
1920 | xfs_ili_zone = | |
1921 | kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili", | |
1922 | KM_ZONE_SPREAD, NULL); | |
1923 | if (!xfs_ili_zone) | |
1924 | goto out_destroy_inode_zone; | |
3ebe7d2d DC |
1925 | xfs_icreate_zone = kmem_zone_init(sizeof(struct xfs_icreate_item), |
1926 | "xfs_icr"); | |
1927 | if (!xfs_icreate_zone) | |
1928 | goto out_destroy_ili_zone; | |
9f8868ff | 1929 | |
722e2517 | 1930 | xfs_rud_zone = kmem_zone_init(sizeof(struct xfs_rud_log_item), |
5880f2d7 DW |
1931 | "xfs_rud_item"); |
1932 | if (!xfs_rud_zone) | |
1933 | goto out_destroy_icreate_zone; | |
1934 | ||
cd00158c DW |
1935 | xfs_rui_zone = kmem_zone_init( |
1936 | xfs_rui_log_item_sizeof(XFS_RUI_MAX_FAST_EXTENTS), | |
5880f2d7 DW |
1937 | "xfs_rui_item"); |
1938 | if (!xfs_rui_zone) | |
1939 | goto out_destroy_rud_zone; | |
1940 | ||
baf4bcac DW |
1941 | xfs_cud_zone = kmem_zone_init(sizeof(struct xfs_cud_log_item), |
1942 | "xfs_cud_item"); | |
1943 | if (!xfs_cud_zone) | |
1944 | goto out_destroy_rui_zone; | |
1945 | ||
1946 | xfs_cui_zone = kmem_zone_init( | |
1947 | xfs_cui_log_item_sizeof(XFS_CUI_MAX_FAST_EXTENTS), | |
1948 | "xfs_cui_item"); | |
1949 | if (!xfs_cui_zone) | |
1950 | goto out_destroy_cud_zone; | |
1951 | ||
6413a014 DW |
1952 | xfs_bud_zone = kmem_zone_init(sizeof(struct xfs_bud_log_item), |
1953 | "xfs_bud_item"); | |
1954 | if (!xfs_bud_zone) | |
1955 | goto out_destroy_cui_zone; | |
1956 | ||
1957 | xfs_bui_zone = kmem_zone_init( | |
1958 | xfs_bui_log_item_sizeof(XFS_BUI_MAX_FAST_EXTENTS), | |
1959 | "xfs_bui_item"); | |
1960 | if (!xfs_bui_zone) | |
1961 | goto out_destroy_bud_zone; | |
1962 | ||
9f8868ff CH |
1963 | return 0; |
1964 | ||
6413a014 DW |
1965 | out_destroy_bud_zone: |
1966 | kmem_zone_destroy(xfs_bud_zone); | |
1967 | out_destroy_cui_zone: | |
1968 | kmem_zone_destroy(xfs_cui_zone); | |
baf4bcac DW |
1969 | out_destroy_cud_zone: |
1970 | kmem_zone_destroy(xfs_cud_zone); | |
1971 | out_destroy_rui_zone: | |
1972 | kmem_zone_destroy(xfs_rui_zone); | |
5880f2d7 DW |
1973 | out_destroy_rud_zone: |
1974 | kmem_zone_destroy(xfs_rud_zone); | |
1975 | out_destroy_icreate_zone: | |
1976 | kmem_zone_destroy(xfs_icreate_zone); | |
3ebe7d2d DC |
1977 | out_destroy_ili_zone: |
1978 | kmem_zone_destroy(xfs_ili_zone); | |
9f8868ff CH |
1979 | out_destroy_inode_zone: |
1980 | kmem_zone_destroy(xfs_inode_zone); | |
1981 | out_destroy_efi_zone: | |
1982 | kmem_zone_destroy(xfs_efi_zone); | |
1983 | out_destroy_efd_zone: | |
1984 | kmem_zone_destroy(xfs_efd_zone); | |
1985 | out_destroy_buf_item_zone: | |
1986 | kmem_zone_destroy(xfs_buf_item_zone); | |
1987 | out_destroy_trans_zone: | |
1988 | kmem_zone_destroy(xfs_trans_zone); | |
1989 | out_destroy_ifork_zone: | |
1990 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
1991 | out_destroy_da_state_zone: |
1992 | kmem_zone_destroy(xfs_da_state_zone); | |
1993 | out_destroy_btree_cur_zone: | |
1994 | kmem_zone_destroy(xfs_btree_cur_zone); | |
1995 | out_destroy_bmap_free_item_zone: | |
1996 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
1997 | out_destroy_log_ticket_zone: | |
1998 | kmem_zone_destroy(xfs_log_ticket_zone); | |
0e51a8e1 | 1999 | out_free_ioend_bioset: |
e292d7bc | 2000 | bioset_exit(&xfs_ioend_bioset); |
9f8868ff CH |
2001 | out: |
2002 | return -ENOMEM; | |
2003 | } | |
2004 | ||
2005 | STATIC void | |
2006 | xfs_destroy_zones(void) | |
2007 | { | |
8c0a8537 KS |
2008 | /* |
2009 | * Make sure all delayed rcu free are flushed before we | |
2010 | * destroy caches. | |
2011 | */ | |
2012 | rcu_barrier(); | |
6413a014 DW |
2013 | kmem_zone_destroy(xfs_bui_zone); |
2014 | kmem_zone_destroy(xfs_bud_zone); | |
baf4bcac DW |
2015 | kmem_zone_destroy(xfs_cui_zone); |
2016 | kmem_zone_destroy(xfs_cud_zone); | |
5880f2d7 DW |
2017 | kmem_zone_destroy(xfs_rui_zone); |
2018 | kmem_zone_destroy(xfs_rud_zone); | |
3ebe7d2d | 2019 | kmem_zone_destroy(xfs_icreate_zone); |
9f8868ff CH |
2020 | kmem_zone_destroy(xfs_ili_zone); |
2021 | kmem_zone_destroy(xfs_inode_zone); | |
2022 | kmem_zone_destroy(xfs_efi_zone); | |
2023 | kmem_zone_destroy(xfs_efd_zone); | |
2024 | kmem_zone_destroy(xfs_buf_item_zone); | |
2025 | kmem_zone_destroy(xfs_trans_zone); | |
2026 | kmem_zone_destroy(xfs_ifork_zone); | |
9f8868ff CH |
2027 | kmem_zone_destroy(xfs_da_state_zone); |
2028 | kmem_zone_destroy(xfs_btree_cur_zone); | |
2029 | kmem_zone_destroy(xfs_bmap_free_item_zone); | |
2030 | kmem_zone_destroy(xfs_log_ticket_zone); | |
e292d7bc | 2031 | bioset_exit(&xfs_ioend_bioset); |
9f8868ff | 2032 | } |
1da177e4 | 2033 | |
0bf6a5bd DC |
2034 | STATIC int __init |
2035 | xfs_init_workqueues(void) | |
2036 | { | |
c999a223 DC |
2037 | /* |
2038 | * The allocation workqueue can be used in memory reclaim situations | |
2039 | * (writepage path), and parallelism is only limited by the number of | |
2040 | * AGs in all the filesystems mounted. Hence use the default large | |
2041 | * max_active value for this workqueue. | |
2042 | */ | |
8018ec08 BF |
2043 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
2044 | WQ_MEM_RECLAIM|WQ_FREEZABLE, 0); | |
c999a223 | 2045 | if (!xfs_alloc_wq) |
5889608d | 2046 | return -ENOMEM; |
c999a223 | 2047 | |
4560e78f CH |
2048 | xfs_discard_wq = alloc_workqueue("xfsdiscard", WQ_UNBOUND, 0); |
2049 | if (!xfs_discard_wq) | |
2050 | goto out_free_alloc_wq; | |
2051 | ||
0bf6a5bd | 2052 | return 0; |
4560e78f CH |
2053 | out_free_alloc_wq: |
2054 | destroy_workqueue(xfs_alloc_wq); | |
2055 | return -ENOMEM; | |
0bf6a5bd DC |
2056 | } |
2057 | ||
39411f81 | 2058 | STATIC void |
0bf6a5bd DC |
2059 | xfs_destroy_workqueues(void) |
2060 | { | |
4560e78f | 2061 | destroy_workqueue(xfs_discard_wq); |
c999a223 | 2062 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
2063 | } |
2064 | ||
1da177e4 | 2065 | STATIC int __init |
9f8868ff | 2066 | init_xfs_fs(void) |
1da177e4 LT |
2067 | { |
2068 | int error; | |
1da177e4 | 2069 | |
30cbc591 DW |
2070 | xfs_check_ondisk_structs(); |
2071 | ||
65795910 CH |
2072 | printk(KERN_INFO XFS_VERSION_STRING " with " |
2073 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 2074 | |
9f8868ff | 2075 | xfs_dir_startup(); |
1da177e4 | 2076 | |
8758280f | 2077 | error = xfs_init_zones(); |
9f8868ff CH |
2078 | if (error) |
2079 | goto out; | |
2080 | ||
0bf6a5bd | 2081 | error = xfs_init_workqueues(); |
9f8868ff | 2082 | if (error) |
0b1b213f | 2083 | goto out_destroy_zones; |
9f8868ff | 2084 | |
0bf6a5bd DC |
2085 | error = xfs_mru_cache_init(); |
2086 | if (error) | |
2087 | goto out_destroy_wq; | |
2088 | ||
ce8e922c | 2089 | error = xfs_buf_init(); |
9f8868ff | 2090 | if (error) |
1919adda | 2091 | goto out_mru_cache_uninit; |
9f8868ff CH |
2092 | |
2093 | error = xfs_init_procfs(); | |
2094 | if (error) | |
2095 | goto out_buf_terminate; | |
2096 | ||
2097 | error = xfs_sysctl_register(); | |
2098 | if (error) | |
2099 | goto out_cleanup_procfs; | |
1da177e4 | 2100 | |
3d871226 BF |
2101 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
2102 | if (!xfs_kset) { | |
2103 | error = -ENOMEM; | |
bb230c12 | 2104 | goto out_sysctl_unregister; |
3d871226 BF |
2105 | } |
2106 | ||
80529c45 BD |
2107 | xfsstats.xs_kobj.kobject.kset = xfs_kset; |
2108 | ||
2109 | xfsstats.xs_stats = alloc_percpu(struct xfsstats); | |
2110 | if (!xfsstats.xs_stats) { | |
2111 | error = -ENOMEM; | |
2112 | goto out_kset_unregister; | |
2113 | } | |
2114 | ||
2115 | error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL, | |
bb230c12 BD |
2116 | "stats"); |
2117 | if (error) | |
80529c45 | 2118 | goto out_free_stats; |
bb230c12 | 2119 | |
65b65735 BF |
2120 | #ifdef DEBUG |
2121 | xfs_dbg_kobj.kobject.kset = xfs_kset; | |
2122 | error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); | |
a05931ce | 2123 | if (error) |
bb230c12 | 2124 | goto out_remove_stats_kobj; |
65b65735 BF |
2125 | #endif |
2126 | ||
2127 | error = xfs_qm_init(); | |
2128 | if (error) | |
bb230c12 | 2129 | goto out_remove_dbg_kobj; |
1da177e4 LT |
2130 | |
2131 | error = register_filesystem(&xfs_fs_type); | |
2132 | if (error) | |
a05931ce | 2133 | goto out_qm_exit; |
1da177e4 LT |
2134 | return 0; |
2135 | ||
a05931ce CH |
2136 | out_qm_exit: |
2137 | xfs_qm_exit(); | |
bb230c12 | 2138 | out_remove_dbg_kobj: |
65b65735 BF |
2139 | #ifdef DEBUG |
2140 | xfs_sysfs_del(&xfs_dbg_kobj); | |
bb230c12 | 2141 | out_remove_stats_kobj: |
65b65735 | 2142 | #endif |
80529c45 BD |
2143 | xfs_sysfs_del(&xfsstats.xs_kobj); |
2144 | out_free_stats: | |
2145 | free_percpu(xfsstats.xs_stats); | |
bb230c12 | 2146 | out_kset_unregister: |
3d871226 | 2147 | kset_unregister(xfs_kset); |
9f8868ff CH |
2148 | out_sysctl_unregister: |
2149 | xfs_sysctl_unregister(); | |
2150 | out_cleanup_procfs: | |
2151 | xfs_cleanup_procfs(); | |
2152 | out_buf_terminate: | |
ce8e922c | 2153 | xfs_buf_terminate(); |
9f8868ff CH |
2154 | out_mru_cache_uninit: |
2155 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
2156 | out_destroy_wq: |
2157 | xfs_destroy_workqueues(); | |
9f8868ff | 2158 | out_destroy_zones: |
8758280f | 2159 | xfs_destroy_zones(); |
9f8868ff | 2160 | out: |
1da177e4 LT |
2161 | return error; |
2162 | } | |
2163 | ||
2164 | STATIC void __exit | |
9f8868ff | 2165 | exit_xfs_fs(void) |
1da177e4 | 2166 | { |
a05931ce | 2167 | xfs_qm_exit(); |
1da177e4 | 2168 | unregister_filesystem(&xfs_fs_type); |
65b65735 BF |
2169 | #ifdef DEBUG |
2170 | xfs_sysfs_del(&xfs_dbg_kobj); | |
2171 | #endif | |
80529c45 BD |
2172 | xfs_sysfs_del(&xfsstats.xs_kobj); |
2173 | free_percpu(xfsstats.xs_stats); | |
3d871226 | 2174 | kset_unregister(xfs_kset); |
9f8868ff CH |
2175 | xfs_sysctl_unregister(); |
2176 | xfs_cleanup_procfs(); | |
ce8e922c | 2177 | xfs_buf_terminate(); |
9f8868ff | 2178 | xfs_mru_cache_uninit(); |
0bf6a5bd | 2179 | xfs_destroy_workqueues(); |
8758280f | 2180 | xfs_destroy_zones(); |
af3b6382 | 2181 | xfs_uuid_table_free(); |
1da177e4 LT |
2182 | } |
2183 | ||
2184 | module_init(init_xfs_fs); | |
2185 | module_exit(exit_xfs_fs); | |
2186 | ||
2187 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
2188 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
2189 | MODULE_LICENSE("GPL"); |