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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" |
894ecacf | 38 | #include "xfs_pwork.h" |
9bbafc71 | 39 | #include "xfs_ag.h" |
f3c799c2 | 40 | #include "xfs_defer.h" |
4136e38a | 41 | #include "xfs_attr_item.h" |
d9c61ccb | 42 | #include "xfs_xattr.h" |
784eb7d8 | 43 | #include "xfs_iunlink_item.h" |
3cfb9290 | 44 | #include "xfs_dahash_test.h" |
1da177e4 | 45 | |
dddde68b | 46 | #include <linux/magic.h> |
73e5fff9 IK |
47 | #include <linux/fs_context.h> |
48 | #include <linux/fs_parser.h> | |
1da177e4 | 49 | |
b87221de | 50 | static const struct super_operations xfs_super_operations; |
65b65735 | 51 | |
e3aed1a0 | 52 | static struct kset *xfs_kset; /* top-level xfs sysfs dir */ |
65b65735 BF |
53 | #ifdef DEBUG |
54 | static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ | |
55 | #endif | |
1da177e4 | 56 | |
0ed17f01 DC |
57 | #ifdef CONFIG_HOTPLUG_CPU |
58 | static LIST_HEAD(xfs_mount_list); | |
59 | static DEFINE_SPINLOCK(xfs_mount_list_lock); | |
60 | ||
61 | static inline void xfs_mount_list_add(struct xfs_mount *mp) | |
62 | { | |
63 | spin_lock(&xfs_mount_list_lock); | |
64 | list_add(&mp->m_mount_list, &xfs_mount_list); | |
65 | spin_unlock(&xfs_mount_list_lock); | |
66 | } | |
67 | ||
68 | static inline void xfs_mount_list_del(struct xfs_mount *mp) | |
69 | { | |
70 | spin_lock(&xfs_mount_list_lock); | |
71 | list_del(&mp->m_mount_list); | |
72 | spin_unlock(&xfs_mount_list_lock); | |
73 | } | |
74 | #else /* !CONFIG_HOTPLUG_CPU */ | |
75 | static inline void xfs_mount_list_add(struct xfs_mount *mp) {} | |
76 | static inline void xfs_mount_list_del(struct xfs_mount *mp) {} | |
77 | #endif | |
78 | ||
8d6c3446 IW |
79 | enum xfs_dax_mode { |
80 | XFS_DAX_INODE = 0, | |
81 | XFS_DAX_ALWAYS = 1, | |
82 | XFS_DAX_NEVER = 2, | |
83 | }; | |
84 | ||
85 | static void | |
86 | xfs_mount_set_dax_mode( | |
87 | struct xfs_mount *mp, | |
88 | enum xfs_dax_mode mode) | |
89 | { | |
90 | switch (mode) { | |
91 | case XFS_DAX_INODE: | |
0560f31a | 92 | mp->m_features &= ~(XFS_FEAT_DAX_ALWAYS | XFS_FEAT_DAX_NEVER); |
8d6c3446 IW |
93 | break; |
94 | case XFS_DAX_ALWAYS: | |
0560f31a DC |
95 | mp->m_features |= XFS_FEAT_DAX_ALWAYS; |
96 | mp->m_features &= ~XFS_FEAT_DAX_NEVER; | |
8d6c3446 IW |
97 | break; |
98 | case XFS_DAX_NEVER: | |
0560f31a DC |
99 | mp->m_features |= XFS_FEAT_DAX_NEVER; |
100 | mp->m_features &= ~XFS_FEAT_DAX_ALWAYS; | |
8d6c3446 IW |
101 | break; |
102 | } | |
103 | } | |
104 | ||
105 | static const struct constant_table dax_param_enums[] = { | |
106 | {"inode", XFS_DAX_INODE }, | |
107 | {"always", XFS_DAX_ALWAYS }, | |
108 | {"never", XFS_DAX_NEVER }, | |
109 | {} | |
110 | }; | |
111 | ||
62a877e3 CH |
112 | /* |
113 | * Table driven mount option parser. | |
62a877e3 CH |
114 | */ |
115 | enum { | |
8da57c5c | 116 | Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev, |
2e74af0e | 117 | Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid, |
94079285 | 118 | Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups, |
1c02d502 ES |
119 | Opt_allocsize, Opt_norecovery, Opt_inode64, Opt_inode32, Opt_ikeep, |
120 | Opt_noikeep, Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2, | |
121 | Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota, | |
122 | Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota, | |
2e74af0e | 123 | Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce, |
8d6c3446 | 124 | Opt_discard, Opt_nodiscard, Opt_dax, Opt_dax_enum, |
62a877e3 CH |
125 | }; |
126 | ||
d7167b14 | 127 | static const struct fs_parameter_spec xfs_fs_parameters[] = { |
73e5fff9 IK |
128 | fsparam_u32("logbufs", Opt_logbufs), |
129 | fsparam_string("logbsize", Opt_logbsize), | |
130 | fsparam_string("logdev", Opt_logdev), | |
131 | fsparam_string("rtdev", Opt_rtdev), | |
132 | fsparam_flag("wsync", Opt_wsync), | |
133 | fsparam_flag("noalign", Opt_noalign), | |
134 | fsparam_flag("swalloc", Opt_swalloc), | |
135 | fsparam_u32("sunit", Opt_sunit), | |
136 | fsparam_u32("swidth", Opt_swidth), | |
137 | fsparam_flag("nouuid", Opt_nouuid), | |
138 | fsparam_flag("grpid", Opt_grpid), | |
139 | fsparam_flag("nogrpid", Opt_nogrpid), | |
140 | fsparam_flag("bsdgroups", Opt_bsdgroups), | |
141 | fsparam_flag("sysvgroups", Opt_sysvgroups), | |
142 | fsparam_string("allocsize", Opt_allocsize), | |
143 | fsparam_flag("norecovery", Opt_norecovery), | |
144 | fsparam_flag("inode64", Opt_inode64), | |
145 | fsparam_flag("inode32", Opt_inode32), | |
146 | fsparam_flag("ikeep", Opt_ikeep), | |
147 | fsparam_flag("noikeep", Opt_noikeep), | |
148 | fsparam_flag("largeio", Opt_largeio), | |
149 | fsparam_flag("nolargeio", Opt_nolargeio), | |
150 | fsparam_flag("attr2", Opt_attr2), | |
151 | fsparam_flag("noattr2", Opt_noattr2), | |
152 | fsparam_flag("filestreams", Opt_filestreams), | |
153 | fsparam_flag("quota", Opt_quota), | |
154 | fsparam_flag("noquota", Opt_noquota), | |
155 | fsparam_flag("usrquota", Opt_usrquota), | |
156 | fsparam_flag("grpquota", Opt_grpquota), | |
157 | fsparam_flag("prjquota", Opt_prjquota), | |
158 | fsparam_flag("uquota", Opt_uquota), | |
159 | fsparam_flag("gquota", Opt_gquota), | |
160 | fsparam_flag("pquota", Opt_pquota), | |
161 | fsparam_flag("uqnoenforce", Opt_uqnoenforce), | |
162 | fsparam_flag("gqnoenforce", Opt_gqnoenforce), | |
163 | fsparam_flag("pqnoenforce", Opt_pqnoenforce), | |
164 | fsparam_flag("qnoenforce", Opt_qnoenforce), | |
165 | fsparam_flag("discard", Opt_discard), | |
166 | fsparam_flag("nodiscard", Opt_nodiscard), | |
167 | fsparam_flag("dax", Opt_dax), | |
8d6c3446 | 168 | fsparam_enum("dax", Opt_dax_enum, dax_param_enums), |
73e5fff9 | 169 | {} |
62a877e3 CH |
170 | }; |
171 | ||
a67d7c5f | 172 | struct proc_xfs_info { |
cbe4dab1 DC |
173 | uint64_t flag; |
174 | char *str; | |
a67d7c5f DC |
175 | }; |
176 | ||
21f55993 CH |
177 | static int |
178 | xfs_fs_show_options( | |
179 | struct seq_file *m, | |
180 | struct dentry *root) | |
a67d7c5f DC |
181 | { |
182 | static struct proc_xfs_info xfs_info_set[] = { | |
183 | /* the few simple ones we can get from the mount struct */ | |
0560f31a DC |
184 | { XFS_FEAT_IKEEP, ",ikeep" }, |
185 | { XFS_FEAT_WSYNC, ",wsync" }, | |
186 | { XFS_FEAT_NOALIGN, ",noalign" }, | |
187 | { XFS_FEAT_SWALLOC, ",swalloc" }, | |
188 | { XFS_FEAT_NOUUID, ",nouuid" }, | |
189 | { XFS_FEAT_NORECOVERY, ",norecovery" }, | |
190 | { XFS_FEAT_ATTR2, ",attr2" }, | |
191 | { XFS_FEAT_FILESTREAMS, ",filestreams" }, | |
192 | { XFS_FEAT_GRPID, ",grpid" }, | |
193 | { XFS_FEAT_DISCARD, ",discard" }, | |
194 | { XFS_FEAT_LARGE_IOSIZE, ",largeio" }, | |
195 | { XFS_FEAT_DAX_ALWAYS, ",dax=always" }, | |
196 | { XFS_FEAT_DAX_NEVER, ",dax=never" }, | |
a67d7c5f DC |
197 | { 0, NULL } |
198 | }; | |
21f55993 | 199 | struct xfs_mount *mp = XFS_M(root->d_sb); |
a67d7c5f DC |
200 | struct proc_xfs_info *xfs_infop; |
201 | ||
202 | for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { | |
0560f31a | 203 | if (mp->m_features & xfs_infop->flag) |
a67d7c5f DC |
204 | seq_puts(m, xfs_infop->str); |
205 | } | |
1775c506 | 206 | |
0560f31a | 207 | seq_printf(m, ",inode%d", xfs_has_small_inums(mp) ? 32 : 64); |
a67d7c5f | 208 | |
0560f31a | 209 | if (xfs_has_allocsize(mp)) |
2e74af0e | 210 | seq_printf(m, ",allocsize=%dk", |
aa58d445 | 211 | (1 << mp->m_allocsize_log) >> 10); |
a67d7c5f DC |
212 | |
213 | if (mp->m_logbufs > 0) | |
2e74af0e | 214 | seq_printf(m, ",logbufs=%d", mp->m_logbufs); |
a67d7c5f | 215 | if (mp->m_logbsize > 0) |
2e74af0e | 216 | seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10); |
a67d7c5f DC |
217 | |
218 | if (mp->m_logname) | |
2e74af0e | 219 | seq_show_option(m, "logdev", mp->m_logname); |
a67d7c5f | 220 | if (mp->m_rtname) |
2e74af0e | 221 | seq_show_option(m, "rtdev", mp->m_rtname); |
a67d7c5f DC |
222 | |
223 | if (mp->m_dalign > 0) | |
2e74af0e | 224 | seq_printf(m, ",sunit=%d", |
a67d7c5f DC |
225 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
226 | if (mp->m_swidth > 0) | |
2e74af0e | 227 | seq_printf(m, ",swidth=%d", |
a67d7c5f DC |
228 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
229 | ||
149e53af CH |
230 | if (mp->m_qflags & XFS_UQUOTA_ENFD) |
231 | seq_puts(m, ",usrquota"); | |
232 | else if (mp->m_qflags & XFS_UQUOTA_ACCT) | |
233 | seq_puts(m, ",uqnoenforce"); | |
a67d7c5f | 234 | |
149e53af CH |
235 | if (mp->m_qflags & XFS_PQUOTA_ENFD) |
236 | seq_puts(m, ",prjquota"); | |
237 | else if (mp->m_qflags & XFS_PQUOTA_ACCT) | |
238 | seq_puts(m, ",pqnoenforce"); | |
239 | ||
240 | if (mp->m_qflags & XFS_GQUOTA_ENFD) | |
241 | seq_puts(m, ",grpquota"); | |
242 | else if (mp->m_qflags & XFS_GQUOTA_ACCT) | |
243 | seq_puts(m, ",gqnoenforce"); | |
a67d7c5f DC |
244 | |
245 | if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) | |
2e74af0e | 246 | seq_puts(m, ",noquota"); |
21f55993 CH |
247 | |
248 | return 0; | |
a67d7c5f | 249 | } |
91083269 | 250 | |
7ac2ff8b DC |
251 | static bool |
252 | xfs_set_inode_alloc_perag( | |
253 | struct xfs_perag *pag, | |
254 | xfs_ino_t ino, | |
255 | xfs_agnumber_t max_metadata) | |
256 | { | |
257 | if (!xfs_is_inode32(pag->pag_mount)) { | |
258 | set_bit(XFS_AGSTATE_ALLOWS_INODES, &pag->pag_opstate); | |
259 | clear_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate); | |
260 | return false; | |
261 | } | |
262 | ||
263 | if (ino > XFS_MAXINUMBER_32) { | |
264 | clear_bit(XFS_AGSTATE_ALLOWS_INODES, &pag->pag_opstate); | |
265 | clear_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate); | |
266 | return false; | |
267 | } | |
268 | ||
269 | set_bit(XFS_AGSTATE_ALLOWS_INODES, &pag->pag_opstate); | |
270 | if (pag->pag_agno < max_metadata) | |
271 | set_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate); | |
272 | else | |
273 | clear_bit(XFS_AGSTATE_PREFERS_METADATA, &pag->pag_opstate); | |
274 | return true; | |
275 | } | |
276 | ||
9de67c3b | 277 | /* |
12c3f05c ES |
278 | * Set parameters for inode allocation heuristics, taking into account |
279 | * filesystem size and inode32/inode64 mount options; i.e. specifically | |
0560f31a | 280 | * whether or not XFS_FEAT_SMALL_INUMS is set. |
12c3f05c ES |
281 | * |
282 | * Inode allocation patterns are altered only if inode32 is requested | |
0560f31a | 283 | * (XFS_FEAT_SMALL_INUMS), and the filesystem is sufficiently large. |
2e973b2c | 284 | * If altered, XFS_OPSTATE_INODE32 is set as well. |
12c3f05c ES |
285 | * |
286 | * An agcount independent of that in the mount structure is provided | |
287 | * because in the growfs case, mp->m_sb.sb_agcount is not yet updated | |
288 | * to the potentially higher ag count. | |
289 | * | |
290 | * Returns the maximum AG index which may contain inodes. | |
9de67c3b | 291 | */ |
2d2194f6 | 292 | xfs_agnumber_t |
12c3f05c ES |
293 | xfs_set_inode_alloc( |
294 | struct xfs_mount *mp, | |
295 | xfs_agnumber_t agcount) | |
2d2194f6 | 296 | { |
12c3f05c | 297 | xfs_agnumber_t index; |
4056c1d0 | 298 | xfs_agnumber_t maxagi = 0; |
2d2194f6 CM |
299 | xfs_sb_t *sbp = &mp->m_sb; |
300 | xfs_agnumber_t max_metadata; | |
54aa61f8 ES |
301 | xfs_agino_t agino; |
302 | xfs_ino_t ino; | |
2d2194f6 | 303 | |
12c3f05c ES |
304 | /* |
305 | * Calculate how much should be reserved for inodes to meet | |
306 | * the max inode percentage. Used only for inode32. | |
2d2194f6 | 307 | */ |
ef325959 | 308 | if (M_IGEO(mp)->maxicount) { |
c8ce540d | 309 | uint64_t icount; |
2d2194f6 CM |
310 | |
311 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
312 | do_div(icount, 100); | |
313 | icount += sbp->sb_agblocks - 1; | |
314 | do_div(icount, sbp->sb_agblocks); | |
315 | max_metadata = icount; | |
316 | } else { | |
9de67c3b | 317 | max_metadata = agcount; |
2d2194f6 CM |
318 | } |
319 | ||
12c3f05c | 320 | /* Get the last possible inode in the filesystem */ |
43004b2a | 321 | agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
12c3f05c ES |
322 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
323 | ||
324 | /* | |
325 | * If user asked for no more than 32-bit inodes, and the fs is | |
2e973b2c | 326 | * sufficiently large, set XFS_OPSTATE_INODE32 if we must alter |
12c3f05c ES |
327 | * the allocator to accommodate the request. |
328 | */ | |
0560f31a | 329 | if (xfs_has_small_inums(mp) && ino > XFS_MAXINUMBER_32) |
2e973b2c | 330 | set_bit(XFS_OPSTATE_INODE32, &mp->m_opstate); |
12c3f05c | 331 | else |
2e973b2c | 332 | clear_bit(XFS_OPSTATE_INODE32, &mp->m_opstate); |
54aa61f8 | 333 | |
9de67c3b | 334 | for (index = 0; index < agcount; index++) { |
12c3f05c | 335 | struct xfs_perag *pag; |
4056c1d0 | 336 | |
12c3f05c | 337 | ino = XFS_AGINO_TO_INO(mp, index, agino); |
2d2194f6 CM |
338 | |
339 | pag = xfs_perag_get(mp, index); | |
7ac2ff8b DC |
340 | if (xfs_set_inode_alloc_perag(pag, ino, max_metadata)) |
341 | maxagi++; | |
2d2194f6 CM |
342 | xfs_perag_put(pag); |
343 | } | |
344 | ||
2e973b2c | 345 | return xfs_is_inode32(mp) ? maxagi : agcount; |
2d2194f6 CM |
346 | } |
347 | ||
679a9949 CH |
348 | static int |
349 | xfs_setup_dax_always( | |
350 | struct xfs_mount *mp) | |
a384f088 | 351 | { |
7b0800d0 CH |
352 | if (!mp->m_ddev_targp->bt_daxdev && |
353 | (!mp->m_rtdev_targp || !mp->m_rtdev_targp->bt_daxdev)) { | |
679a9949 CH |
354 | xfs_alert(mp, |
355 | "DAX unsupported by block device. Turning off DAX."); | |
356 | goto disable_dax; | |
7b0800d0 CH |
357 | } |
358 | ||
359 | if (mp->m_super->s_blocksize != PAGE_SIZE) { | |
360 | xfs_alert(mp, | |
361 | "DAX not supported for blocksize. Turning off DAX."); | |
362 | goto disable_dax; | |
679a9949 CH |
363 | } |
364 | ||
35fcd75a SR |
365 | if (xfs_has_reflink(mp) && |
366 | bdev_is_partition(mp->m_ddev_targp->bt_bdev)) { | |
367 | xfs_alert(mp, | |
368 | "DAX and reflink cannot work with multi-partitions!"); | |
679a9949 CH |
369 | return -EINVAL; |
370 | } | |
371 | ||
372 | xfs_warn(mp, "DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); | |
373 | return 0; | |
374 | ||
375 | disable_dax: | |
376 | xfs_mount_set_dax_mode(mp, XFS_DAX_NEVER); | |
377 | return 0; | |
a384f088 CH |
378 | } |
379 | ||
3180e66d | 380 | STATIC int |
1da177e4 LT |
381 | xfs_blkdev_get( |
382 | xfs_mount_t *mp, | |
383 | const char *name, | |
384 | struct block_device **bdevp) | |
385 | { | |
386 | int error = 0; | |
387 | ||
d4d77629 TH |
388 | *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
389 | mp); | |
1da177e4 LT |
390 | if (IS_ERR(*bdevp)) { |
391 | error = PTR_ERR(*bdevp); | |
77af574e | 392 | xfs_warn(mp, "Invalid device [%s], error=%d", name, error); |
1da177e4 LT |
393 | } |
394 | ||
2451337d | 395 | return error; |
1da177e4 LT |
396 | } |
397 | ||
3180e66d | 398 | STATIC void |
1da177e4 LT |
399 | xfs_blkdev_put( |
400 | struct block_device *bdev) | |
401 | { | |
402 | if (bdev) | |
e525fd89 | 403 | blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
1da177e4 LT |
404 | } |
405 | ||
19f354d4 CH |
406 | STATIC void |
407 | xfs_close_devices( | |
408 | struct xfs_mount *mp) | |
409 | { | |
410 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
c032bfcf | 411 | struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
486aff5e | 412 | |
a1f69417 | 413 | xfs_free_buftarg(mp->m_logdev_targp); |
c032bfcf | 414 | xfs_blkdev_put(logdev); |
19f354d4 CH |
415 | } |
416 | if (mp->m_rtdev_targp) { | |
c032bfcf | 417 | struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
486aff5e | 418 | |
a1f69417 | 419 | xfs_free_buftarg(mp->m_rtdev_targp); |
c032bfcf | 420 | xfs_blkdev_put(rtdev); |
19f354d4 | 421 | } |
a1f69417 | 422 | xfs_free_buftarg(mp->m_ddev_targp); |
19f354d4 CH |
423 | } |
424 | ||
425 | /* | |
426 | * The file system configurations are: | |
427 | * (1) device (partition) with data and internal log | |
428 | * (2) logical volume with data and log subvolumes. | |
429 | * (3) logical volume with data, log, and realtime subvolumes. | |
430 | * | |
431 | * We only have to handle opening the log and realtime volumes here if | |
432 | * they are present. The data subvolume has already been opened by | |
433 | * get_sb_bdev() and is stored in sb->s_bdev. | |
434 | */ | |
435 | STATIC int | |
436 | xfs_open_devices( | |
9d565ffa | 437 | struct xfs_mount *mp) |
19f354d4 CH |
438 | { |
439 | struct block_device *ddev = mp->m_super->s_bdev; | |
440 | struct block_device *logdev = NULL, *rtdev = NULL; | |
441 | int error; | |
442 | ||
443 | /* | |
444 | * Open real time and log devices - order is important. | |
445 | */ | |
9d565ffa CH |
446 | if (mp->m_logname) { |
447 | error = xfs_blkdev_get(mp, mp->m_logname, &logdev); | |
19f354d4 | 448 | if (error) |
5b5abbef | 449 | return error; |
19f354d4 CH |
450 | } |
451 | ||
9d565ffa CH |
452 | if (mp->m_rtname) { |
453 | error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); | |
19f354d4 CH |
454 | if (error) |
455 | goto out_close_logdev; | |
456 | ||
457 | if (rtdev == ddev || rtdev == logdev) { | |
4f10700a DC |
458 | xfs_warn(mp, |
459 | "Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
2451337d | 460 | error = -EINVAL; |
19f354d4 CH |
461 | goto out_close_rtdev; |
462 | } | |
463 | } | |
464 | ||
465 | /* | |
466 | * Setup xfs_mount buffer target pointers | |
467 | */ | |
2451337d | 468 | error = -ENOMEM; |
5b5abbef | 469 | mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev); |
19f354d4 CH |
470 | if (!mp->m_ddev_targp) |
471 | goto out_close_rtdev; | |
472 | ||
473 | if (rtdev) { | |
5b5abbef | 474 | mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev); |
19f354d4 CH |
475 | if (!mp->m_rtdev_targp) |
476 | goto out_free_ddev_targ; | |
477 | } | |
478 | ||
479 | if (logdev && logdev != ddev) { | |
5b5abbef | 480 | mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev); |
19f354d4 CH |
481 | if (!mp->m_logdev_targp) |
482 | goto out_free_rtdev_targ; | |
483 | } else { | |
484 | mp->m_logdev_targp = mp->m_ddev_targp; | |
485 | } | |
486 | ||
487 | return 0; | |
488 | ||
489 | out_free_rtdev_targ: | |
490 | if (mp->m_rtdev_targp) | |
a1f69417 | 491 | xfs_free_buftarg(mp->m_rtdev_targp); |
19f354d4 | 492 | out_free_ddev_targ: |
a1f69417 | 493 | xfs_free_buftarg(mp->m_ddev_targp); |
19f354d4 | 494 | out_close_rtdev: |
d2a5e3c6 | 495 | xfs_blkdev_put(rtdev); |
19f354d4 | 496 | out_close_logdev: |
5b5abbef | 497 | if (logdev && logdev != ddev) |
19f354d4 | 498 | xfs_blkdev_put(logdev); |
19f354d4 CH |
499 | return error; |
500 | } | |
501 | ||
e34b562c CH |
502 | /* |
503 | * Setup xfs_mount buffer target pointers based on superblock | |
504 | */ | |
505 | STATIC int | |
506 | xfs_setup_devices( | |
507 | struct xfs_mount *mp) | |
508 | { | |
509 | int error; | |
19f354d4 | 510 | |
a96c4151 | 511 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
e34b562c CH |
512 | if (error) |
513 | return error; | |
514 | ||
515 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
516 | unsigned int log_sector_size = BBSIZE; | |
517 | ||
38c26bfd | 518 | if (xfs_has_sector(mp)) |
e34b562c CH |
519 | log_sector_size = mp->m_sb.sb_logsectsize; |
520 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
e34b562c CH |
521 | log_sector_size); |
522 | if (error) | |
523 | return error; | |
524 | } | |
525 | if (mp->m_rtdev_targp) { | |
526 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
e34b562c CH |
527 | mp->m_sb.sb_sectsize); |
528 | if (error) | |
529 | return error; | |
530 | } | |
531 | ||
532 | return 0; | |
533 | } | |
19f354d4 | 534 | |
aa6bf01d CH |
535 | STATIC int |
536 | xfs_init_mount_workqueues( | |
537 | struct xfs_mount *mp) | |
538 | { | |
78c931b8 | 539 | mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
05a302a1 DW |
540 | XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), |
541 | 1, mp->m_super->s_id); | |
78c931b8 BF |
542 | if (!mp->m_buf_workqueue) |
543 | goto out; | |
544 | ||
aa6bf01d | 545 | mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", |
05a302a1 DW |
546 | XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), |
547 | 0, mp->m_super->s_id); | |
aa6bf01d | 548 | if (!mp->m_unwritten_workqueue) |
28408243 | 549 | goto out_destroy_buf; |
aa6bf01d | 550 | |
5889608d | 551 | mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", |
05a302a1 DW |
552 | XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), |
553 | 0, mp->m_super->s_id); | |
5889608d | 554 | if (!mp->m_reclaim_workqueue) |
33c0dd78 | 555 | goto out_destroy_unwritten; |
5889608d | 556 | |
ab23a776 DC |
557 | mp->m_blockgc_wq = alloc_workqueue("xfs-blockgc/%s", |
558 | XFS_WQFLAGS(WQ_UNBOUND | WQ_FREEZABLE | WQ_MEM_RECLAIM), | |
05a302a1 | 559 | 0, mp->m_super->s_id); |
ab23a776 | 560 | if (!mp->m_blockgc_wq) |
1058d0f5 | 561 | goto out_destroy_reclaim; |
579b62fa | 562 | |
ab23a776 DC |
563 | mp->m_inodegc_wq = alloc_workqueue("xfs-inodegc/%s", |
564 | XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), | |
565 | 1, mp->m_super->s_id); | |
566 | if (!mp->m_inodegc_wq) | |
567 | goto out_destroy_blockgc; | |
568 | ||
05a302a1 DW |
569 | mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", |
570 | XFS_WQFLAGS(WQ_FREEZABLE), 0, mp->m_super->s_id); | |
696a5620 | 571 | if (!mp->m_sync_workqueue) |
ab23a776 | 572 | goto out_destroy_inodegc; |
696a5620 | 573 | |
aa6bf01d CH |
574 | return 0; |
575 | ||
ab23a776 DC |
576 | out_destroy_inodegc: |
577 | destroy_workqueue(mp->m_inodegc_wq); | |
578 | out_destroy_blockgc: | |
579 | destroy_workqueue(mp->m_blockgc_wq); | |
5889608d DC |
580 | out_destroy_reclaim: |
581 | destroy_workqueue(mp->m_reclaim_workqueue); | |
4c2d542f DC |
582 | out_destroy_unwritten: |
583 | destroy_workqueue(mp->m_unwritten_workqueue); | |
78c931b8 BF |
584 | out_destroy_buf: |
585 | destroy_workqueue(mp->m_buf_workqueue); | |
aa6bf01d CH |
586 | out: |
587 | return -ENOMEM; | |
588 | } | |
589 | ||
590 | STATIC void | |
591 | xfs_destroy_mount_workqueues( | |
592 | struct xfs_mount *mp) | |
593 | { | |
696a5620 | 594 | destroy_workqueue(mp->m_sync_workqueue); |
ab23a776 DC |
595 | destroy_workqueue(mp->m_blockgc_wq); |
596 | destroy_workqueue(mp->m_inodegc_wq); | |
5889608d | 597 | destroy_workqueue(mp->m_reclaim_workqueue); |
aa6bf01d | 598 | destroy_workqueue(mp->m_unwritten_workqueue); |
78c931b8 | 599 | destroy_workqueue(mp->m_buf_workqueue); |
aa6bf01d CH |
600 | } |
601 | ||
f0f7a674 DW |
602 | static void |
603 | xfs_flush_inodes_worker( | |
604 | struct work_struct *work) | |
605 | { | |
606 | struct xfs_mount *mp = container_of(work, struct xfs_mount, | |
607 | m_flush_inodes_work); | |
608 | struct super_block *sb = mp->m_super; | |
609 | ||
610 | if (down_read_trylock(&sb->s_umount)) { | |
611 | sync_inodes_sb(sb); | |
612 | up_read(&sb->s_umount); | |
613 | } | |
614 | } | |
615 | ||
9aa05000 DC |
616 | /* |
617 | * Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK | |
618 | * or a page lock. We use sync_inodes_sb() here to ensure we block while waiting | |
619 | * for IO to complete so that we effectively throttle multiple callers to the | |
620 | * rate at which IO is completing. | |
621 | */ | |
622 | void | |
623 | xfs_flush_inodes( | |
624 | struct xfs_mount *mp) | |
625 | { | |
f0f7a674 DW |
626 | /* |
627 | * If flush_work() returns true then that means we waited for a flush | |
628 | * which was already in progress. Don't bother running another scan. | |
629 | */ | |
630 | if (flush_work(&mp->m_flush_inodes_work)) | |
c6425702 DW |
631 | return; |
632 | ||
f0f7a674 DW |
633 | queue_work(mp->m_sync_workqueue, &mp->m_flush_inodes_work); |
634 | flush_work(&mp->m_flush_inodes_work); | |
9aa05000 DC |
635 | } |
636 | ||
bf904248 | 637 | /* Catch misguided souls that try to use this interface on XFS */ |
1da177e4 | 638 | STATIC struct inode * |
a50cd269 | 639 | xfs_fs_alloc_inode( |
1da177e4 LT |
640 | struct super_block *sb) |
641 | { | |
bf904248 | 642 | BUG(); |
493dca61 | 643 | return NULL; |
1da177e4 LT |
644 | } |
645 | ||
bf904248 | 646 | /* |
99fa8cb3 | 647 | * Now that the generic code is guaranteed not to be accessing |
8179c036 | 648 | * the linux inode, we can inactivate and reclaim the inode. |
bf904248 | 649 | */ |
1da177e4 | 650 | STATIC void |
a50cd269 | 651 | xfs_fs_destroy_inode( |
848ce8f7 | 652 | struct inode *inode) |
1da177e4 | 653 | { |
848ce8f7 CH |
654 | struct xfs_inode *ip = XFS_I(inode); |
655 | ||
cca28fb8 | 656 | trace_xfs_destroy_inode(ip); |
99fa8cb3 | 657 | |
65523218 | 658 | ASSERT(!rwsem_is_locked(&inode->i_rwsem)); |
8179c036 DC |
659 | XFS_STATS_INC(ip->i_mount, vn_rele); |
660 | XFS_STATS_INC(ip->i_mount, vn_remove); | |
c076ae7a | 661 | xfs_inode_mark_reclaimable(ip); |
1da177e4 LT |
662 | } |
663 | ||
c3b1b131 CH |
664 | static void |
665 | xfs_fs_dirty_inode( | |
666 | struct inode *inode, | |
cbfecb92 | 667 | int flags) |
c3b1b131 CH |
668 | { |
669 | struct xfs_inode *ip = XFS_I(inode); | |
670 | struct xfs_mount *mp = ip->i_mount; | |
671 | struct xfs_trans *tp; | |
672 | ||
673 | if (!(inode->i_sb->s_flags & SB_LAZYTIME)) | |
674 | return; | |
cbfecb92 LC |
675 | |
676 | /* | |
677 | * Only do the timestamp update if the inode is dirty (I_DIRTY_SYNC) | |
678 | * and has dirty timestamp (I_DIRTY_TIME). I_DIRTY_TIME can be passed | |
679 | * in flags possibly together with I_DIRTY_SYNC. | |
680 | */ | |
681 | if ((flags & ~I_DIRTY_TIME) != I_DIRTY_SYNC || !(flags & I_DIRTY_TIME)) | |
c3b1b131 CH |
682 | return; |
683 | ||
684 | if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp)) | |
685 | return; | |
686 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
687 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
688 | xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); | |
689 | xfs_trans_commit(tp); | |
690 | } | |
691 | ||
07c8f675 DC |
692 | /* |
693 | * Slab object creation initialisation for the XFS inode. | |
694 | * This covers only the idempotent fields in the XFS inode; | |
695 | * all other fields need to be initialised on allocation | |
b595076a | 696 | * from the slab. This avoids the need to repeatedly initialise |
07c8f675 DC |
697 | * fields in the xfs inode that left in the initialise state |
698 | * when freeing the inode. | |
699 | */ | |
bf904248 DC |
700 | STATIC void |
701 | xfs_fs_inode_init_once( | |
07c8f675 DC |
702 | void *inode) |
703 | { | |
704 | struct xfs_inode *ip = inode; | |
705 | ||
706 | memset(ip, 0, sizeof(struct xfs_inode)); | |
bf904248 DC |
707 | |
708 | /* vfs inode */ | |
709 | inode_init_once(VFS_I(ip)); | |
710 | ||
711 | /* xfs inode */ | |
07c8f675 DC |
712 | atomic_set(&ip->i_pincount, 0); |
713 | spin_lock_init(&ip->i_flags_lock); | |
07c8f675 DC |
714 | |
715 | mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, | |
716 | "xfsino", ip->i_ino); | |
07c8f675 DC |
717 | } |
718 | ||
5132ba8f DC |
719 | /* |
720 | * We do an unlocked check for XFS_IDONTCACHE here because we are already | |
721 | * serialised against cache hits here via the inode->i_lock and igrab() in | |
722 | * xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be | |
723 | * racing with us, and it avoids needing to grab a spinlock here for every inode | |
724 | * we drop the final reference on. | |
725 | */ | |
726 | STATIC int | |
727 | xfs_fs_drop_inode( | |
728 | struct inode *inode) | |
729 | { | |
730 | struct xfs_inode *ip = XFS_I(inode); | |
731 | ||
17c12bcd DW |
732 | /* |
733 | * If this unlinked inode is in the middle of recovery, don't | |
734 | * drop the inode just yet; log recovery will take care of | |
735 | * that. See the comment for this inode flag. | |
736 | */ | |
737 | if (ip->i_flags & XFS_IRECOVERY) { | |
e1d06e5f | 738 | ASSERT(xlog_recovery_needed(ip->i_mount->m_log)); |
17c12bcd DW |
739 | return 0; |
740 | } | |
741 | ||
dae2f8ed | 742 | return generic_drop_inode(inode); |
5132ba8f DC |
743 | } |
744 | ||
a943f372 IK |
745 | static void |
746 | xfs_mount_free( | |
a738159d CH |
747 | struct xfs_mount *mp) |
748 | { | |
a738159d CH |
749 | kfree(mp->m_rtname); |
750 | kfree(mp->m_logname); | |
a943f372 | 751 | kmem_free(mp); |
a738159d CH |
752 | } |
753 | ||
1da177e4 | 754 | STATIC int |
69961a26 | 755 | xfs_fs_sync_fs( |
1da177e4 LT |
756 | struct super_block *sb, |
757 | int wait) | |
758 | { | |
745f6919 | 759 | struct xfs_mount *mp = XFS_M(sb); |
2d86293c | 760 | int error; |
1da177e4 | 761 | |
ab23a776 DC |
762 | trace_xfs_fs_sync_fs(mp, __return_address); |
763 | ||
e893bffd | 764 | /* |
34625c66 | 765 | * Doing anything during the async pass would be counterproductive. |
e893bffd | 766 | */ |
34625c66 | 767 | if (!wait) |
69961a26 | 768 | return 0; |
69961a26 | 769 | |
2d86293c DW |
770 | error = xfs_log_force(mp, XFS_LOG_SYNC); |
771 | if (error) | |
772 | return error; | |
773 | ||
69961a26 | 774 | if (laptop_mode) { |
1da177e4 LT |
775 | /* |
776 | * The disk must be active because we're syncing. | |
f661f1e0 | 777 | * We schedule log work now (now that the disk is |
1da177e4 LT |
778 | * active) instead of later (when it might not be). |
779 | */ | |
f661f1e0 | 780 | flush_delayed_work(&mp->m_log->l_work); |
1da177e4 LT |
781 | } |
782 | ||
ab23a776 DC |
783 | /* |
784 | * If we are called with page faults frozen out, it means we are about | |
785 | * to freeze the transaction subsystem. Take the opportunity to shut | |
786 | * down inodegc because once SB_FREEZE_FS is set it's too late to | |
787 | * prevent inactivation races with freeze. The fs doesn't get called | |
788 | * again by the freezing process until after SB_FREEZE_FS has been set, | |
6f649091 DW |
789 | * so it's now or never. Same logic applies to speculative allocation |
790 | * garbage collection. | |
ab23a776 DC |
791 | * |
792 | * We don't care if this is a normal syncfs call that does this or | |
793 | * freeze that does this - we can run this multiple times without issue | |
794 | * and we won't race with a restart because a restart can only occur | |
795 | * when the state is either SB_FREEZE_FS or SB_FREEZE_COMPLETE. | |
796 | */ | |
6f649091 | 797 | if (sb->s_writers.frozen == SB_FREEZE_PAGEFAULT) { |
ab23a776 | 798 | xfs_inodegc_stop(mp); |
6f649091 DW |
799 | xfs_blockgc_stop(mp); |
800 | } | |
ab23a776 | 801 | |
69961a26 | 802 | return 0; |
1da177e4 LT |
803 | } |
804 | ||
805 | STATIC int | |
a50cd269 | 806 | xfs_fs_statfs( |
726c3342 | 807 | struct dentry *dentry, |
1da177e4 LT |
808 | struct kstatfs *statp) |
809 | { | |
4ca488eb CH |
810 | struct xfs_mount *mp = XFS_M(dentry->d_sb); |
811 | xfs_sb_t *sbp = &mp->m_sb; | |
2b0143b5 | 812 | struct xfs_inode *ip = XFS_I(d_inode(dentry)); |
c8ce540d DW |
813 | uint64_t fakeinos, id; |
814 | uint64_t icount; | |
815 | uint64_t ifree; | |
816 | uint64_t fdblocks; | |
4ca488eb | 817 | xfs_extlen_t lsize; |
c8ce540d | 818 | int64_t ffree; |
4ca488eb | 819 | |
5e672cd6 DC |
820 | /* |
821 | * Expedite background inodegc but don't wait. We do not want to block | |
822 | * here waiting hours for a billion extent file to be truncated. | |
823 | */ | |
824 | xfs_inodegc_push(mp); | |
01e8f379 | 825 | |
dddde68b | 826 | statp->f_type = XFS_SUPER_MAGIC; |
4ca488eb CH |
827 | statp->f_namelen = MAXNAMELEN - 1; |
828 | ||
829 | id = huge_encode_dev(mp->m_ddev_targp->bt_dev); | |
6d1349c7 | 830 | statp->f_fsid = u64_to_fsid(id); |
4ca488eb | 831 | |
501ab323 | 832 | icount = percpu_counter_sum(&mp->m_icount); |
e88b64ea | 833 | ifree = percpu_counter_sum(&mp->m_ifree); |
0d485ada | 834 | fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
4ca488eb CH |
835 | |
836 | spin_lock(&mp->m_sb_lock); | |
837 | statp->f_bsize = sbp->sb_blocksize; | |
838 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
839 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
0d485ada DC |
840 | spin_unlock(&mp->m_sb_lock); |
841 | ||
237aac46 | 842 | /* make sure statp->f_bfree does not underflow */ |
85bcfa26 DW |
843 | statp->f_bfree = max_t(int64_t, 0, |
844 | fdblocks - xfs_fdblocks_unavailable(mp)); | |
0d485ada DC |
845 | statp->f_bavail = statp->f_bfree; |
846 | ||
43004b2a | 847 | fakeinos = XFS_FSB_TO_INO(mp, statp->f_bfree); |
9bb54cb5 | 848 | statp->f_files = min(icount + fakeinos, (uint64_t)XFS_MAXINUMBER); |
ef325959 | 849 | if (M_IGEO(mp)->maxicount) |
a19d9f88 CH |
850 | statp->f_files = min_t(typeof(statp->f_files), |
851 | statp->f_files, | |
ef325959 | 852 | M_IGEO(mp)->maxicount); |
2fe33661 | 853 | |
01f9882e ES |
854 | /* If sb_icount overshot maxicount, report actual allocation */ |
855 | statp->f_files = max_t(typeof(statp->f_files), | |
856 | statp->f_files, | |
857 | sbp->sb_icount); | |
858 | ||
2fe33661 | 859 | /* make sure statp->f_ffree does not underflow */ |
e88b64ea | 860 | ffree = statp->f_files - (icount - ifree); |
c8ce540d | 861 | statp->f_ffree = max_t(int64_t, ffree, 0); |
2fe33661 | 862 | |
4ca488eb | 863 | |
db07349d | 864 | if ((ip->i_diflags & XFS_DIFLAG_PROJINHERIT) && |
83e782e1 CS |
865 | ((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
866 | (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) | |
7d095257 | 867 | xfs_qm_statvfs(ip, statp); |
a0158315 RW |
868 | |
869 | if (XFS_IS_REALTIME_MOUNT(mp) && | |
db07349d | 870 | (ip->i_diflags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME))) { |
2229276c DW |
871 | s64 freertx; |
872 | ||
a0158315 | 873 | statp->f_blocks = sbp->sb_rblocks; |
2229276c DW |
874 | freertx = percpu_counter_sum_positive(&mp->m_frextents); |
875 | statp->f_bavail = statp->f_bfree = freertx * sbp->sb_rextsize; | |
a0158315 RW |
876 | } |
877 | ||
4ca488eb | 878 | return 0; |
1da177e4 LT |
879 | } |
880 | ||
d5db0f97 ES |
881 | STATIC void |
882 | xfs_save_resvblks(struct xfs_mount *mp) | |
883 | { | |
c8ce540d | 884 | uint64_t resblks = 0; |
d5db0f97 ES |
885 | |
886 | mp->m_resblks_save = mp->m_resblks; | |
887 | xfs_reserve_blocks(mp, &resblks, NULL); | |
888 | } | |
889 | ||
890 | STATIC void | |
891 | xfs_restore_resvblks(struct xfs_mount *mp) | |
892 | { | |
c8ce540d | 893 | uint64_t resblks; |
d5db0f97 ES |
894 | |
895 | if (mp->m_resblks_save) { | |
896 | resblks = mp->m_resblks_save; | |
897 | mp->m_resblks_save = 0; | |
898 | } else | |
899 | resblks = xfs_default_resblks(mp); | |
900 | ||
901 | xfs_reserve_blocks(mp, &resblks, NULL); | |
902 | } | |
903 | ||
8757c38f IK |
904 | /* |
905 | * Second stage of a freeze. The data is already frozen so we only | |
906 | * need to take care of the metadata. Once that's done sync the superblock | |
907 | * to the log to dirty it in case of a crash while frozen. This ensures that we | |
908 | * will recover the unlinked inode lists on the next mount. | |
909 | */ | |
910 | STATIC int | |
911 | xfs_fs_freeze( | |
912 | struct super_block *sb) | |
913 | { | |
914 | struct xfs_mount *mp = XFS_M(sb); | |
c3f2375b WL |
915 | unsigned int flags; |
916 | int ret; | |
8757c38f | 917 | |
c3f2375b WL |
918 | /* |
919 | * The filesystem is now frozen far enough that memory reclaim | |
920 | * cannot safely operate on the filesystem. Hence we need to | |
921 | * set a GFP_NOFS context here to avoid recursion deadlocks. | |
922 | */ | |
923 | flags = memalloc_nofs_save(); | |
8757c38f | 924 | xfs_save_resvblks(mp); |
5b0ad7c2 | 925 | ret = xfs_log_quiesce(mp); |
c3f2375b | 926 | memalloc_nofs_restore(flags); |
ab23a776 DC |
927 | |
928 | /* | |
929 | * For read-write filesystems, we need to restart the inodegc on error | |
930 | * because we stopped it at SB_FREEZE_PAGEFAULT level and a thaw is not | |
931 | * going to be run to restart it now. We are at SB_FREEZE_FS level | |
932 | * here, so we can restart safely without racing with a stop in | |
933 | * xfs_fs_sync_fs(). | |
934 | */ | |
2e973b2c | 935 | if (ret && !xfs_is_readonly(mp)) { |
6f649091 | 936 | xfs_blockgc_start(mp); |
ab23a776 | 937 | xfs_inodegc_start(mp); |
6f649091 | 938 | } |
ab23a776 | 939 | |
c3f2375b | 940 | return ret; |
8757c38f IK |
941 | } |
942 | ||
943 | STATIC int | |
944 | xfs_fs_unfreeze( | |
945 | struct super_block *sb) | |
946 | { | |
947 | struct xfs_mount *mp = XFS_M(sb); | |
948 | ||
949 | xfs_restore_resvblks(mp); | |
950 | xfs_log_work_queue(mp); | |
ab23a776 DC |
951 | |
952 | /* | |
953 | * Don't reactivate the inodegc worker on a readonly filesystem because | |
6f649091 DW |
954 | * inodes are sent directly to reclaim. Don't reactivate the blockgc |
955 | * worker because there are no speculative preallocations on a readonly | |
956 | * filesystem. | |
ab23a776 | 957 | */ |
2e973b2c | 958 | if (!xfs_is_readonly(mp)) { |
6f649091 | 959 | xfs_blockgc_start(mp); |
ab23a776 | 960 | xfs_inodegc_start(mp); |
6f649091 | 961 | } |
ab23a776 | 962 | |
8757c38f IK |
963 | return 0; |
964 | } | |
965 | ||
966 | /* | |
967 | * This function fills in xfs_mount_t fields based on mount args. | |
968 | * Note: the superblock _has_ now been read in. | |
969 | */ | |
970 | STATIC int | |
971 | xfs_finish_flags( | |
972 | struct xfs_mount *mp) | |
973 | { | |
8757c38f | 974 | /* Fail a mount where the logbuf is smaller than the log stripe */ |
38c26bfd | 975 | if (xfs_has_logv2(mp)) { |
8757c38f IK |
976 | if (mp->m_logbsize <= 0 && |
977 | mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { | |
978 | mp->m_logbsize = mp->m_sb.sb_logsunit; | |
979 | } else if (mp->m_logbsize > 0 && | |
980 | mp->m_logbsize < mp->m_sb.sb_logsunit) { | |
981 | xfs_warn(mp, | |
982 | "logbuf size must be greater than or equal to log stripe size"); | |
983 | return -EINVAL; | |
984 | } | |
985 | } else { | |
986 | /* Fail a mount if the logbuf is larger than 32K */ | |
987 | if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { | |
988 | xfs_warn(mp, | |
989 | "logbuf size for version 1 logs must be 16K or 32K"); | |
990 | return -EINVAL; | |
991 | } | |
992 | } | |
993 | ||
994 | /* | |
995 | * V5 filesystems always use attr2 format for attributes. | |
996 | */ | |
0560f31a | 997 | if (xfs_has_crc(mp) && xfs_has_noattr2(mp)) { |
8757c38f IK |
998 | xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. " |
999 | "attr2 is always enabled for V5 filesystems."); | |
1000 | return -EINVAL; | |
1001 | } | |
1002 | ||
8757c38f IK |
1003 | /* |
1004 | * prohibit r/w mounts of read-only filesystems | |
1005 | */ | |
2e973b2c | 1006 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !xfs_is_readonly(mp)) { |
8757c38f IK |
1007 | xfs_warn(mp, |
1008 | "cannot mount a read-only filesystem as read-write"); | |
1009 | return -EROFS; | |
1010 | } | |
1011 | ||
149e53af CH |
1012 | if ((mp->m_qflags & XFS_GQUOTA_ACCT) && |
1013 | (mp->m_qflags & XFS_PQUOTA_ACCT) && | |
38c26bfd | 1014 | !xfs_has_pquotino(mp)) { |
8757c38f IK |
1015 | xfs_warn(mp, |
1016 | "Super block does not support project and group quota together"); | |
1017 | return -EINVAL; | |
1018 | } | |
1019 | ||
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | static int | |
1024 | xfs_init_percpu_counters( | |
1025 | struct xfs_mount *mp) | |
1026 | { | |
1027 | int error; | |
1028 | ||
1029 | error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL); | |
1030 | if (error) | |
1031 | return -ENOMEM; | |
1032 | ||
1033 | error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL); | |
1034 | if (error) | |
1035 | goto free_icount; | |
1036 | ||
1037 | error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL); | |
1038 | if (error) | |
1039 | goto free_ifree; | |
1040 | ||
1041 | error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL); | |
1042 | if (error) | |
1043 | goto free_fdblocks; | |
1044 | ||
2229276c DW |
1045 | error = percpu_counter_init(&mp->m_frextents, 0, GFP_KERNEL); |
1046 | if (error) | |
1047 | goto free_delalloc; | |
1048 | ||
8757c38f IK |
1049 | return 0; |
1050 | ||
2229276c DW |
1051 | free_delalloc: |
1052 | percpu_counter_destroy(&mp->m_delalloc_blks); | |
8757c38f IK |
1053 | free_fdblocks: |
1054 | percpu_counter_destroy(&mp->m_fdblocks); | |
1055 | free_ifree: | |
1056 | percpu_counter_destroy(&mp->m_ifree); | |
1057 | free_icount: | |
1058 | percpu_counter_destroy(&mp->m_icount); | |
1059 | return -ENOMEM; | |
1060 | } | |
1061 | ||
1062 | void | |
1063 | xfs_reinit_percpu_counters( | |
1064 | struct xfs_mount *mp) | |
1065 | { | |
1066 | percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount); | |
1067 | percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree); | |
1068 | percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks); | |
2229276c | 1069 | percpu_counter_set(&mp->m_frextents, mp->m_sb.sb_frextents); |
8757c38f IK |
1070 | } |
1071 | ||
1072 | static void | |
1073 | xfs_destroy_percpu_counters( | |
1074 | struct xfs_mount *mp) | |
1075 | { | |
1076 | percpu_counter_destroy(&mp->m_icount); | |
1077 | percpu_counter_destroy(&mp->m_ifree); | |
1078 | percpu_counter_destroy(&mp->m_fdblocks); | |
75c8c50f | 1079 | ASSERT(xfs_is_shutdown(mp) || |
8757c38f IK |
1080 | percpu_counter_sum(&mp->m_delalloc_blks) == 0); |
1081 | percpu_counter_destroy(&mp->m_delalloc_blks); | |
2229276c | 1082 | percpu_counter_destroy(&mp->m_frextents); |
8757c38f IK |
1083 | } |
1084 | ||
ab23a776 DC |
1085 | static int |
1086 | xfs_inodegc_init_percpu( | |
1087 | struct xfs_mount *mp) | |
1088 | { | |
1089 | struct xfs_inodegc *gc; | |
1090 | int cpu; | |
1091 | ||
1092 | mp->m_inodegc = alloc_percpu(struct xfs_inodegc); | |
1093 | if (!mp->m_inodegc) | |
1094 | return -ENOMEM; | |
1095 | ||
1096 | for_each_possible_cpu(cpu) { | |
1097 | gc = per_cpu_ptr(mp->m_inodegc, cpu); | |
b37c4c83 DW |
1098 | #if defined(DEBUG) || defined(XFS_WARN) |
1099 | gc->cpu = cpu; | |
1100 | #endif | |
ab23a776 DC |
1101 | init_llist_head(&gc->list); |
1102 | gc->items = 0; | |
7cf2b0f9 | 1103 | INIT_DELAYED_WORK(&gc->work, xfs_inodegc_worker); |
ab23a776 DC |
1104 | } |
1105 | return 0; | |
1106 | } | |
1107 | ||
1108 | static void | |
1109 | xfs_inodegc_free_percpu( | |
1110 | struct xfs_mount *mp) | |
1111 | { | |
1112 | if (!mp->m_inodegc) | |
1113 | return; | |
1114 | free_percpu(mp->m_inodegc); | |
1115 | } | |
1116 | ||
8757c38f IK |
1117 | static void |
1118 | xfs_fs_put_super( | |
1119 | struct super_block *sb) | |
1120 | { | |
1121 | struct xfs_mount *mp = XFS_M(sb); | |
1122 | ||
1123 | /* if ->fill_super failed, we have no mount to tear down */ | |
1124 | if (!sb->s_fs_info) | |
1125 | return; | |
1126 | ||
64c80dfd | 1127 | xfs_notice(mp, "Unmounting Filesystem %pU", &mp->m_sb.sb_uuid); |
8757c38f IK |
1128 | xfs_filestream_unmount(mp); |
1129 | xfs_unmountfs(mp); | |
1130 | ||
1131 | xfs_freesb(mp); | |
1132 | free_percpu(mp->m_stats.xs_stats); | |
0ed17f01 | 1133 | xfs_mount_list_del(mp); |
ab23a776 | 1134 | xfs_inodegc_free_percpu(mp); |
8757c38f IK |
1135 | xfs_destroy_percpu_counters(mp); |
1136 | xfs_destroy_mount_workqueues(mp); | |
1137 | xfs_close_devices(mp); | |
1138 | ||
1139 | sb->s_fs_info = NULL; | |
1140 | xfs_mount_free(mp); | |
1141 | } | |
1142 | ||
1143 | static long | |
1144 | xfs_fs_nr_cached_objects( | |
1145 | struct super_block *sb, | |
1146 | struct shrink_control *sc) | |
1147 | { | |
1148 | /* Paranoia: catch incorrect calls during mount setup or teardown */ | |
1149 | if (WARN_ON_ONCE(!sb->s_fs_info)) | |
1150 | return 0; | |
1151 | return xfs_reclaim_inodes_count(XFS_M(sb)); | |
1152 | } | |
1153 | ||
1154 | static long | |
1155 | xfs_fs_free_cached_objects( | |
1156 | struct super_block *sb, | |
1157 | struct shrink_control *sc) | |
c7eea6f7 | 1158 | { |
8757c38f IK |
1159 | return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); |
1160 | } | |
c7eea6f7 | 1161 | |
8757c38f IK |
1162 | static const struct super_operations xfs_super_operations = { |
1163 | .alloc_inode = xfs_fs_alloc_inode, | |
1164 | .destroy_inode = xfs_fs_destroy_inode, | |
1165 | .dirty_inode = xfs_fs_dirty_inode, | |
1166 | .drop_inode = xfs_fs_drop_inode, | |
1167 | .put_super = xfs_fs_put_super, | |
1168 | .sync_fs = xfs_fs_sync_fs, | |
1169 | .freeze_fs = xfs_fs_freeze, | |
1170 | .unfreeze_fs = xfs_fs_unfreeze, | |
1171 | .statfs = xfs_fs_statfs, | |
1172 | .show_options = xfs_fs_show_options, | |
1173 | .nr_cached_objects = xfs_fs_nr_cached_objects, | |
1174 | .free_cached_objects = xfs_fs_free_cached_objects, | |
1175 | }; | |
c7eea6f7 | 1176 | |
8757c38f IK |
1177 | static int |
1178 | suffix_kstrtoint( | |
1179 | const char *s, | |
1180 | unsigned int base, | |
1181 | int *res) | |
1182 | { | |
1183 | int last, shift_left_factor = 0, _res; | |
1184 | char *value; | |
1185 | int ret = 0; | |
1186 | ||
1187 | value = kstrdup(s, GFP_KERNEL); | |
1188 | if (!value) | |
1189 | return -ENOMEM; | |
1190 | ||
1191 | last = strlen(value) - 1; | |
1192 | if (value[last] == 'K' || value[last] == 'k') { | |
1193 | shift_left_factor = 10; | |
1194 | value[last] = '\0'; | |
1195 | } | |
1196 | if (value[last] == 'M' || value[last] == 'm') { | |
1197 | shift_left_factor = 20; | |
1198 | value[last] = '\0'; | |
1199 | } | |
1200 | if (value[last] == 'G' || value[last] == 'g') { | |
1201 | shift_left_factor = 30; | |
1202 | value[last] = '\0'; | |
1203 | } | |
1204 | ||
1205 | if (kstrtoint(value, base, &_res)) | |
1206 | ret = -EINVAL; | |
1207 | kfree(value); | |
1208 | *res = _res << shift_left_factor; | |
1209 | return ret; | |
c7eea6f7 DC |
1210 | } |
1211 | ||
92cf7d36 PR |
1212 | static inline void |
1213 | xfs_fs_warn_deprecated( | |
1214 | struct fs_context *fc, | |
1215 | struct fs_parameter *param, | |
1216 | uint64_t flag, | |
1217 | bool value) | |
1218 | { | |
1219 | /* Don't print the warning if reconfiguring and current mount point | |
1220 | * already had the flag set | |
1221 | */ | |
1222 | if ((fc->purpose & FS_CONTEXT_FOR_RECONFIGURE) && | |
0560f31a | 1223 | !!(XFS_M(fc->root->d_sb)->m_features & flag) == value) |
92cf7d36 PR |
1224 | return; |
1225 | xfs_warn(fc->s_fs_info, "%s mount option is deprecated.", param->key); | |
1226 | } | |
1227 | ||
9909c4aa | 1228 | /* |
8757c38f IK |
1229 | * Set mount state from a mount option. |
1230 | * | |
1231 | * NOTE: mp->m_super is NULL here! | |
9909c4aa | 1232 | */ |
8757c38f | 1233 | static int |
1e5c39df | 1234 | xfs_fs_parse_param( |
8757c38f IK |
1235 | struct fs_context *fc, |
1236 | struct fs_parameter *param) | |
1da177e4 | 1237 | { |
0f98b4ec | 1238 | struct xfs_mount *parsing_mp = fc->s_fs_info; |
8757c38f IK |
1239 | struct fs_parse_result result; |
1240 | int size = 0; | |
1241 | int opt; | |
9909c4aa | 1242 | |
d7167b14 | 1243 | opt = fs_parse(fc, xfs_fs_parameters, param, &result); |
8757c38f IK |
1244 | if (opt < 0) |
1245 | return opt; | |
1da177e4 | 1246 | |
8757c38f IK |
1247 | switch (opt) { |
1248 | case Opt_logbufs: | |
0f98b4ec | 1249 | parsing_mp->m_logbufs = result.uint_32; |
8757c38f IK |
1250 | return 0; |
1251 | case Opt_logbsize: | |
0f98b4ec | 1252 | if (suffix_kstrtoint(param->string, 10, &parsing_mp->m_logbsize)) |
8757c38f IK |
1253 | return -EINVAL; |
1254 | return 0; | |
1255 | case Opt_logdev: | |
0f98b4ec PR |
1256 | kfree(parsing_mp->m_logname); |
1257 | parsing_mp->m_logname = kstrdup(param->string, GFP_KERNEL); | |
1258 | if (!parsing_mp->m_logname) | |
8757c38f IK |
1259 | return -ENOMEM; |
1260 | return 0; | |
1261 | case Opt_rtdev: | |
0f98b4ec PR |
1262 | kfree(parsing_mp->m_rtname); |
1263 | parsing_mp->m_rtname = kstrdup(param->string, GFP_KERNEL); | |
1264 | if (!parsing_mp->m_rtname) | |
8757c38f IK |
1265 | return -ENOMEM; |
1266 | return 0; | |
1267 | case Opt_allocsize: | |
1268 | if (suffix_kstrtoint(param->string, 10, &size)) | |
1269 | return -EINVAL; | |
0f98b4ec | 1270 | parsing_mp->m_allocsize_log = ffs(size) - 1; |
0560f31a | 1271 | parsing_mp->m_features |= XFS_FEAT_ALLOCSIZE; |
8757c38f IK |
1272 | return 0; |
1273 | case Opt_grpid: | |
1274 | case Opt_bsdgroups: | |
0560f31a | 1275 | parsing_mp->m_features |= XFS_FEAT_GRPID; |
8757c38f IK |
1276 | return 0; |
1277 | case Opt_nogrpid: | |
1278 | case Opt_sysvgroups: | |
0560f31a | 1279 | parsing_mp->m_features &= ~XFS_FEAT_GRPID; |
8757c38f IK |
1280 | return 0; |
1281 | case Opt_wsync: | |
0560f31a | 1282 | parsing_mp->m_features |= XFS_FEAT_WSYNC; |
8757c38f IK |
1283 | return 0; |
1284 | case Opt_norecovery: | |
0560f31a | 1285 | parsing_mp->m_features |= XFS_FEAT_NORECOVERY; |
8757c38f IK |
1286 | return 0; |
1287 | case Opt_noalign: | |
0560f31a | 1288 | parsing_mp->m_features |= XFS_FEAT_NOALIGN; |
8757c38f IK |
1289 | return 0; |
1290 | case Opt_swalloc: | |
0560f31a | 1291 | parsing_mp->m_features |= XFS_FEAT_SWALLOC; |
8757c38f IK |
1292 | return 0; |
1293 | case Opt_sunit: | |
0f98b4ec | 1294 | parsing_mp->m_dalign = result.uint_32; |
8757c38f IK |
1295 | return 0; |
1296 | case Opt_swidth: | |
0f98b4ec | 1297 | parsing_mp->m_swidth = result.uint_32; |
8757c38f IK |
1298 | return 0; |
1299 | case Opt_inode32: | |
0560f31a | 1300 | parsing_mp->m_features |= XFS_FEAT_SMALL_INUMS; |
8757c38f IK |
1301 | return 0; |
1302 | case Opt_inode64: | |
0560f31a | 1303 | parsing_mp->m_features &= ~XFS_FEAT_SMALL_INUMS; |
8757c38f IK |
1304 | return 0; |
1305 | case Opt_nouuid: | |
0560f31a | 1306 | parsing_mp->m_features |= XFS_FEAT_NOUUID; |
8757c38f | 1307 | return 0; |
8757c38f | 1308 | case Opt_largeio: |
0560f31a | 1309 | parsing_mp->m_features |= XFS_FEAT_LARGE_IOSIZE; |
8757c38f IK |
1310 | return 0; |
1311 | case Opt_nolargeio: | |
0560f31a | 1312 | parsing_mp->m_features &= ~XFS_FEAT_LARGE_IOSIZE; |
8757c38f | 1313 | return 0; |
8757c38f | 1314 | case Opt_filestreams: |
0560f31a | 1315 | parsing_mp->m_features |= XFS_FEAT_FILESTREAMS; |
8757c38f IK |
1316 | return 0; |
1317 | case Opt_noquota: | |
0f98b4ec PR |
1318 | parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
1319 | parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; | |
8757c38f IK |
1320 | return 0; |
1321 | case Opt_quota: | |
1322 | case Opt_uquota: | |
1323 | case Opt_usrquota: | |
149e53af | 1324 | parsing_mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ENFD); |
8757c38f IK |
1325 | return 0; |
1326 | case Opt_qnoenforce: | |
1327 | case Opt_uqnoenforce: | |
149e53af | 1328 | parsing_mp->m_qflags |= XFS_UQUOTA_ACCT; |
0f98b4ec | 1329 | parsing_mp->m_qflags &= ~XFS_UQUOTA_ENFD; |
8757c38f IK |
1330 | return 0; |
1331 | case Opt_pquota: | |
1332 | case Opt_prjquota: | |
149e53af | 1333 | parsing_mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ENFD); |
8757c38f IK |
1334 | return 0; |
1335 | case Opt_pqnoenforce: | |
149e53af | 1336 | parsing_mp->m_qflags |= XFS_PQUOTA_ACCT; |
0f98b4ec | 1337 | parsing_mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
8757c38f IK |
1338 | return 0; |
1339 | case Opt_gquota: | |
1340 | case Opt_grpquota: | |
149e53af | 1341 | parsing_mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ENFD); |
8757c38f IK |
1342 | return 0; |
1343 | case Opt_gqnoenforce: | |
149e53af | 1344 | parsing_mp->m_qflags |= XFS_GQUOTA_ACCT; |
0f98b4ec | 1345 | parsing_mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
8757c38f IK |
1346 | return 0; |
1347 | case Opt_discard: | |
0560f31a | 1348 | parsing_mp->m_features |= XFS_FEAT_DISCARD; |
8757c38f IK |
1349 | return 0; |
1350 | case Opt_nodiscard: | |
0560f31a | 1351 | parsing_mp->m_features &= ~XFS_FEAT_DISCARD; |
8757c38f IK |
1352 | return 0; |
1353 | #ifdef CONFIG_FS_DAX | |
1354 | case Opt_dax: | |
0f98b4ec | 1355 | xfs_mount_set_dax_mode(parsing_mp, XFS_DAX_ALWAYS); |
8d6c3446 IW |
1356 | return 0; |
1357 | case Opt_dax_enum: | |
0f98b4ec | 1358 | xfs_mount_set_dax_mode(parsing_mp, result.uint_32); |
8757c38f IK |
1359 | return 0; |
1360 | #endif | |
c23c393e PR |
1361 | /* Following mount options will be removed in September 2025 */ |
1362 | case Opt_ikeep: | |
0560f31a DC |
1363 | xfs_fs_warn_deprecated(fc, param, XFS_FEAT_IKEEP, true); |
1364 | parsing_mp->m_features |= XFS_FEAT_IKEEP; | |
c23c393e PR |
1365 | return 0; |
1366 | case Opt_noikeep: | |
0560f31a DC |
1367 | xfs_fs_warn_deprecated(fc, param, XFS_FEAT_IKEEP, false); |
1368 | parsing_mp->m_features &= ~XFS_FEAT_IKEEP; | |
c23c393e PR |
1369 | return 0; |
1370 | case Opt_attr2: | |
0560f31a DC |
1371 | xfs_fs_warn_deprecated(fc, param, XFS_FEAT_ATTR2, true); |
1372 | parsing_mp->m_features |= XFS_FEAT_ATTR2; | |
c23c393e PR |
1373 | return 0; |
1374 | case Opt_noattr2: | |
0560f31a DC |
1375 | xfs_fs_warn_deprecated(fc, param, XFS_FEAT_NOATTR2, true); |
1376 | parsing_mp->m_features |= XFS_FEAT_NOATTR2; | |
c23c393e | 1377 | return 0; |
8757c38f | 1378 | default: |
0f98b4ec | 1379 | xfs_warn(parsing_mp, "unknown mount option [%s].", param->key); |
8757c38f IK |
1380 | return -EINVAL; |
1381 | } | |
d5db0f97 | 1382 | |
d5db0f97 ES |
1383 | return 0; |
1384 | } | |
1385 | ||
8757c38f | 1386 | static int |
1e5c39df | 1387 | xfs_fs_validate_params( |
f8f15e42 CH |
1388 | struct xfs_mount *mp) |
1389 | { | |
0560f31a | 1390 | /* No recovery flag requires a read-only mount */ |
2e973b2c | 1391 | if (xfs_has_norecovery(mp) && !xfs_is_readonly(mp)) { |
8757c38f | 1392 | xfs_warn(mp, "no-recovery mounts must be read-only."); |
2451337d | 1393 | return -EINVAL; |
d3eaace8 DC |
1394 | } |
1395 | ||
d3eaace8 | 1396 | /* |
0560f31a DC |
1397 | * We have not read the superblock at this point, so only the attr2 |
1398 | * mount option can set the attr2 feature by this stage. | |
d3eaace8 | 1399 | */ |
0560f31a | 1400 | if (xfs_has_attr2(mp) && xfs_has_noattr2(mp)) { |
e23b55d5 | 1401 | xfs_warn(mp, "attr2 and noattr2 cannot both be specified."); |
2451337d | 1402 | return -EINVAL; |
d3eaace8 DC |
1403 | } |
1404 | ||
e23b55d5 | 1405 | |
0560f31a | 1406 | if (xfs_has_noalign(mp) && (mp->m_dalign || mp->m_swidth)) { |
4f10700a | 1407 | xfs_warn(mp, |
8757c38f IK |
1408 | "sunit and swidth options incompatible with the noalign option"); |
1409 | return -EINVAL; | |
f8f15e42 CH |
1410 | } |
1411 | ||
8757c38f IK |
1412 | if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) { |
1413 | xfs_warn(mp, "quota support not available in this kernel."); | |
2451337d | 1414 | return -EINVAL; |
d892d586 CS |
1415 | } |
1416 | ||
8757c38f IK |
1417 | if ((mp->m_dalign && !mp->m_swidth) || |
1418 | (!mp->m_dalign && mp->m_swidth)) { | |
1419 | xfs_warn(mp, "sunit and swidth must be specified together"); | |
1420 | return -EINVAL; | |
1421 | } | |
5681ca40 | 1422 | |
8757c38f IK |
1423 | if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) { |
1424 | xfs_warn(mp, | |
1425 | "stripe width (%d) must be a multiple of the stripe unit (%d)", | |
1426 | mp->m_swidth, mp->m_dalign); | |
1427 | return -EINVAL; | |
1428 | } | |
5681ca40 | 1429 | |
8757c38f IK |
1430 | if (mp->m_logbufs != -1 && |
1431 | mp->m_logbufs != 0 && | |
1432 | (mp->m_logbufs < XLOG_MIN_ICLOGS || | |
1433 | mp->m_logbufs > XLOG_MAX_ICLOGS)) { | |
1434 | xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", | |
1435 | mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
1436 | return -EINVAL; | |
1437 | } | |
5681ca40 | 1438 | |
8757c38f IK |
1439 | if (mp->m_logbsize != -1 && |
1440 | mp->m_logbsize != 0 && | |
1441 | (mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || | |
1442 | mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || | |
1443 | !is_power_of_2(mp->m_logbsize))) { | |
1444 | xfs_warn(mp, | |
1445 | "invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
1446 | mp->m_logbsize); | |
1447 | return -EINVAL; | |
1448 | } | |
5681ca40 | 1449 | |
0560f31a | 1450 | if (xfs_has_allocsize(mp) && |
8757c38f IK |
1451 | (mp->m_allocsize_log > XFS_MAX_IO_LOG || |
1452 | mp->m_allocsize_log < XFS_MIN_IO_LOG)) { | |
1453 | xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", | |
1454 | mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG); | |
1455 | return -EINVAL; | |
1456 | } | |
9fe82b8c | 1457 | |
5681ca40 | 1458 | return 0; |
72c44e35 | 1459 | } |
74394496 | 1460 | |
73e5fff9 | 1461 | static int |
1e5c39df | 1462 | xfs_fs_fill_super( |
72c44e35 | 1463 | struct super_block *sb, |
73e5fff9 | 1464 | struct fs_context *fc) |
72c44e35 | 1465 | { |
73e5fff9 | 1466 | struct xfs_mount *mp = sb->s_fs_info; |
72c44e35 | 1467 | struct inode *root; |
0279c71f | 1468 | int flags = 0, error; |
72c44e35 | 1469 | |
7c89fcb2 | 1470 | mp->m_super = sb; |
1da177e4 | 1471 | |
1e5c39df | 1472 | error = xfs_fs_validate_params(mp); |
745f6919 | 1473 | if (error) |
e1d3d218 | 1474 | goto out_free_names; |
1da177e4 LT |
1475 | |
1476 | sb_min_blocksize(sb, BBSIZE); | |
0ec58516 | 1477 | sb->s_xattr = xfs_xattr_handlers; |
a50cd269 | 1478 | sb->s_export_op = &xfs_export_operations; |
fcafb71b | 1479 | #ifdef CONFIG_XFS_QUOTA |
a50cd269 | 1480 | sb->s_qcop = &xfs_quotactl_operations; |
17ef4fdd | 1481 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
fcafb71b | 1482 | #endif |
a50cd269 | 1483 | sb->s_op = &xfs_super_operations; |
1da177e4 | 1484 | |
dae5cd81 DC |
1485 | /* |
1486 | * Delay mount work if the debug hook is set. This is debug | |
1487 | * instrumention to coordinate simulation of xfs mount failures with | |
1488 | * VFS superblock operations | |
1489 | */ | |
1490 | if (xfs_globals.mount_delay) { | |
1491 | xfs_notice(mp, "Delaying mount for %d seconds.", | |
1492 | xfs_globals.mount_delay); | |
1493 | msleep(xfs_globals.mount_delay * 1000); | |
1494 | } | |
1495 | ||
73e5fff9 | 1496 | if (fc->sb_flags & SB_SILENT) |
f8f15e42 CH |
1497 | flags |= XFS_MFSI_QUIET; |
1498 | ||
9d565ffa | 1499 | error = xfs_open_devices(mp); |
19f354d4 | 1500 | if (error) |
e1d3d218 | 1501 | goto out_free_names; |
f8f15e42 | 1502 | |
2451337d | 1503 | error = xfs_init_mount_workqueues(mp); |
61ba35de CH |
1504 | if (error) |
1505 | goto out_close_devices; | |
c962fb79 | 1506 | |
5681ca40 | 1507 | error = xfs_init_percpu_counters(mp); |
aa6bf01d CH |
1508 | if (error) |
1509 | goto out_destroy_workqueues; | |
1510 | ||
ab23a776 DC |
1511 | error = xfs_inodegc_init_percpu(mp); |
1512 | if (error) | |
1513 | goto out_destroy_counters; | |
1514 | ||
0ed17f01 DC |
1515 | /* |
1516 | * All percpu data structures requiring cleanup when a cpu goes offline | |
1517 | * must be allocated before adding this @mp to the cpu-dead handler's | |
1518 | * mount list. | |
1519 | */ | |
1520 | xfs_mount_list_add(mp); | |
1521 | ||
225e4635 BD |
1522 | /* Allocate stats memory before we do operations that might use it */ |
1523 | mp->m_stats.xs_stats = alloc_percpu(struct xfsstats); | |
1524 | if (!mp->m_stats.xs_stats) { | |
f9d460b3 | 1525 | error = -ENOMEM; |
ab23a776 | 1526 | goto out_destroy_inodegc; |
225e4635 BD |
1527 | } |
1528 | ||
f8f15e42 CH |
1529 | error = xfs_readsb(mp, flags); |
1530 | if (error) | |
225e4635 | 1531 | goto out_free_stats; |
9d565ffa CH |
1532 | |
1533 | error = xfs_finish_flags(mp); | |
f8f15e42 | 1534 | if (error) |
effa2eda | 1535 | goto out_free_sb; |
f8f15e42 | 1536 | |
e34b562c | 1537 | error = xfs_setup_devices(mp); |
19f354d4 | 1538 | if (error) |
effa2eda | 1539 | goto out_free_sb; |
f8f15e42 | 1540 | |
b96cb835 | 1541 | /* V4 support is undergoing deprecation. */ |
38c26bfd | 1542 | if (!xfs_has_crc(mp)) { |
b96cb835 DW |
1543 | #ifdef CONFIG_XFS_SUPPORT_V4 |
1544 | xfs_warn_once(mp, | |
1545 | "Deprecated V4 format (crc=0) will not be supported after September 2030."); | |
1546 | #else | |
1547 | xfs_warn(mp, | |
1548 | "Deprecated V4 format (crc=0) not supported by kernel."); | |
1549 | error = -EINVAL; | |
1550 | goto out_free_sb; | |
1551 | #endif | |
1552 | } | |
1553 | ||
7ba83850 DW |
1554 | /* ASCII case insensitivity is undergoing deprecation. */ |
1555 | if (xfs_has_asciici(mp)) { | |
1556 | #ifdef CONFIG_XFS_SUPPORT_ASCII_CI | |
1557 | xfs_warn_once(mp, | |
1558 | "Deprecated ASCII case-insensitivity feature (ascii-ci=1) will not be supported after September 2030."); | |
1559 | #else | |
1560 | xfs_warn(mp, | |
1561 | "Deprecated ASCII case-insensitivity feature (ascii-ci=1) not supported by kernel."); | |
1562 | error = -EINVAL; | |
1563 | goto out_free_sb; | |
1564 | #endif | |
1565 | } | |
1566 | ||
80c720b8 | 1567 | /* Filesystem claims it needs repair, so refuse the mount. */ |
ebd9027d | 1568 | if (xfs_has_needsrepair(mp)) { |
80c720b8 DW |
1569 | xfs_warn(mp, "Filesystem needs repair. Please run xfs_repair."); |
1570 | error = -EFSCORRUPTED; | |
1571 | goto out_free_sb; | |
1572 | } | |
1573 | ||
3945ae03 DW |
1574 | /* |
1575 | * Don't touch the filesystem if a user tool thinks it owns the primary | |
1576 | * superblock. mkfs doesn't clear the flag from secondary supers, so | |
1577 | * we don't check them at all. | |
1578 | */ | |
1579 | if (mp->m_sb.sb_inprogress) { | |
1580 | xfs_warn(mp, "Offline file system operation in progress!"); | |
1581 | error = -EFSCORRUPTED; | |
1582 | goto out_free_sb; | |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * Until this is fixed only page-sized or smaller data blocks work. | |
1587 | */ | |
1588 | if (mp->m_sb.sb_blocksize > PAGE_SIZE) { | |
1589 | xfs_warn(mp, | |
1590 | "File system with blocksize %d bytes. " | |
1591 | "Only pagesize (%ld) or less will currently work.", | |
1592 | mp->m_sb.sb_blocksize, PAGE_SIZE); | |
1593 | error = -ENOSYS; | |
1594 | goto out_free_sb; | |
1595 | } | |
1596 | ||
1597 | /* Ensure this filesystem fits in the page cache limits */ | |
1598 | if (xfs_sb_validate_fsb_count(&mp->m_sb, mp->m_sb.sb_dblocks) || | |
1599 | xfs_sb_validate_fsb_count(&mp->m_sb, mp->m_sb.sb_rblocks)) { | |
1600 | xfs_warn(mp, | |
1601 | "file system too large to be mounted on this system."); | |
1602 | error = -EFBIG; | |
1603 | goto out_free_sb; | |
1604 | } | |
1605 | ||
932befe3 DW |
1606 | /* |
1607 | * XFS block mappings use 54 bits to store the logical block offset. | |
1608 | * This should suffice to handle the maximum file size that the VFS | |
1609 | * supports (currently 2^63 bytes on 64-bit and ULONG_MAX << PAGE_SHIFT | |
1610 | * bytes on 32-bit), but as XFS and VFS have gotten the s_maxbytes | |
1611 | * calculation wrong on 32-bit kernels in the past, we'll add a WARN_ON | |
1612 | * to check this assertion. | |
1613 | * | |
1614 | * Avoid integer overflow by comparing the maximum bmbt offset to the | |
1615 | * maximum pagecache offset in units of fs blocks. | |
1616 | */ | |
33005fd0 | 1617 | if (!xfs_verify_fileoff(mp, XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE))) { |
932befe3 DW |
1618 | xfs_warn(mp, |
1619 | "MAX_LFS_FILESIZE block offset (%llu) exceeds extent map maximum (%llu)!", | |
1620 | XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE), | |
1621 | XFS_MAX_FILEOFF); | |
1622 | error = -EINVAL; | |
1623 | goto out_free_sb; | |
1624 | } | |
1625 | ||
f8f15e42 CH |
1626 | error = xfs_filestream_mount(mp); |
1627 | if (error) | |
effa2eda | 1628 | goto out_free_sb; |
f8f15e42 | 1629 | |
704b2907 DC |
1630 | /* |
1631 | * we must configure the block size in the superblock before we run the | |
1632 | * full mount process as the mount process can lookup and cache inodes. | |
704b2907 | 1633 | */ |
dddde68b | 1634 | sb->s_magic = XFS_SUPER_MAGIC; |
4ca488eb CH |
1635 | sb->s_blocksize = mp->m_sb.sb_blocksize; |
1636 | sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; | |
932befe3 | 1637 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
8de52778 | 1638 | sb->s_max_links = XFS_MAXLINK; |
1da177e4 | 1639 | sb->s_time_gran = 1; |
38c26bfd | 1640 | if (xfs_has_bigtime(mp)) { |
f93e5436 DW |
1641 | sb->s_time_min = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MIN); |
1642 | sb->s_time_max = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MAX); | |
1643 | } else { | |
1644 | sb->s_time_min = XFS_LEGACY_TIME_MIN; | |
1645 | sb->s_time_max = XFS_LEGACY_TIME_MAX; | |
1646 | } | |
06dbf82b | 1647 | trace_xfs_inode_timestamp_range(mp, sb->s_time_min, sb->s_time_max); |
adfb5fb4 CH |
1648 | sb->s_iflags |= SB_I_CGROUPWB; |
1649 | ||
1da177e4 LT |
1650 | set_posix_acl_flag(sb); |
1651 | ||
dc037ad7 | 1652 | /* version 5 superblocks support inode version counters. */ |
d6837c1a | 1653 | if (xfs_has_crc(mp)) |
357fdad0 | 1654 | sb->s_flags |= SB_I_VERSION; |
dc037ad7 | 1655 | |
0560f31a | 1656 | if (xfs_has_dax_always(mp)) { |
679a9949 CH |
1657 | error = xfs_setup_dax_always(mp); |
1658 | if (error) | |
b6e03c10 | 1659 | goto out_filestream_unmount; |
cbe4dab1 DC |
1660 | } |
1661 | ||
70200574 CH |
1662 | if (xfs_has_discard(mp) && !bdev_max_discard_sectors(sb->s_bdev)) { |
1663 | xfs_warn(mp, | |
1664 | "mounting with \"discard\" option, but the device does not support discard"); | |
1665 | mp->m_features &= ~XFS_FEAT_DISCARD; | |
1e6fa688 KN |
1666 | } |
1667 | ||
38c26bfd | 1668 | if (xfs_has_reflink(mp)) { |
66ae56a5 CH |
1669 | if (mp->m_sb.sb_rblocks) { |
1670 | xfs_alert(mp, | |
c14632dd | 1671 | "reflink not compatible with realtime device!"); |
66ae56a5 CH |
1672 | error = -EINVAL; |
1673 | goto out_filestream_unmount; | |
1674 | } | |
1675 | ||
1676 | if (xfs_globals.always_cow) { | |
1677 | xfs_info(mp, "using DEBUG-only always_cow mode."); | |
1678 | mp->m_always_cow = true; | |
1679 | } | |
c14632dd DW |
1680 | } |
1681 | ||
38c26bfd | 1682 | if (xfs_has_rmapbt(mp) && mp->m_sb.sb_rblocks) { |
1c0607ac | 1683 | xfs_alert(mp, |
76883f79 DW |
1684 | "reverse mapping btree not compatible with realtime device!"); |
1685 | error = -EINVAL; | |
1686 | goto out_filestream_unmount; | |
738f57c1 | 1687 | } |
1c0607ac | 1688 | |
973ac0eb CB |
1689 | if (xfs_has_large_extent_counts(mp)) |
1690 | xfs_warn(mp, | |
1691 | "EXPERIMENTAL Large extent counts feature in use. Use at your own risk!"); | |
1692 | ||
8a00ebe4 | 1693 | error = xfs_mountfs(mp); |
2bcf6e97 | 1694 | if (error) |
7e18530b | 1695 | goto out_filestream_unmount; |
704b2907 | 1696 | |
01651646 | 1697 | root = igrab(VFS_I(mp->m_rootip)); |
f3dcc13f | 1698 | if (!root) { |
2451337d | 1699 | error = -ENOENT; |
8a00ebe4 | 1700 | goto out_unmount; |
cbc89dcf | 1701 | } |
48fde701 | 1702 | sb->s_root = d_make_root(root); |
f3dcc13f | 1703 | if (!sb->s_root) { |
2451337d | 1704 | error = -ENOMEM; |
8a00ebe4 | 1705 | goto out_unmount; |
1da177e4 | 1706 | } |
74394496 | 1707 | |
1da177e4 | 1708 | return 0; |
33c7a2bc | 1709 | |
7e18530b | 1710 | out_filestream_unmount: |
120226c1 | 1711 | xfs_filestream_unmount(mp); |
effa2eda CH |
1712 | out_free_sb: |
1713 | xfs_freesb(mp); | |
225e4635 BD |
1714 | out_free_stats: |
1715 | free_percpu(mp->m_stats.xs_stats); | |
ab23a776 | 1716 | out_destroy_inodegc: |
0ed17f01 | 1717 | xfs_mount_list_del(mp); |
ab23a776 | 1718 | xfs_inodegc_free_percpu(mp); |
9d565ffa | 1719 | out_destroy_counters: |
5681ca40 | 1720 | xfs_destroy_percpu_counters(mp); |
225e4635 | 1721 | out_destroy_workqueues: |
aa6bf01d | 1722 | xfs_destroy_mount_workqueues(mp); |
61ba35de | 1723 | out_close_devices: |
19f354d4 | 1724 | xfs_close_devices(mp); |
e1d3d218 | 1725 | out_free_names: |
c9fbd7bb | 1726 | sb->s_fs_info = NULL; |
a943f372 | 1727 | xfs_mount_free(mp); |
2451337d | 1728 | return error; |
f8f15e42 | 1729 | |
2bcf6e97 | 1730 | out_unmount: |
e48ad316 | 1731 | xfs_filestream_unmount(mp); |
19f354d4 | 1732 | xfs_unmountfs(mp); |
6203300e | 1733 | goto out_free_sb; |
1da177e4 LT |
1734 | } |
1735 | ||
73e5fff9 | 1736 | static int |
1e5c39df | 1737 | xfs_fs_get_tree( |
73e5fff9 IK |
1738 | struct fs_context *fc) |
1739 | { | |
1e5c39df | 1740 | return get_tree_bdev(fc, xfs_fs_fill_super); |
73e5fff9 IK |
1741 | } |
1742 | ||
63cd1e9b IK |
1743 | static int |
1744 | xfs_remount_rw( | |
1745 | struct xfs_mount *mp) | |
1746 | { | |
1747 | struct xfs_sb *sbp = &mp->m_sb; | |
1748 | int error; | |
1749 | ||
0560f31a | 1750 | if (xfs_has_norecovery(mp)) { |
63cd1e9b IK |
1751 | xfs_warn(mp, |
1752 | "ro->rw transition prohibited on norecovery mount"); | |
1753 | return -EINVAL; | |
1754 | } | |
1755 | ||
d6837c1a | 1756 | if (xfs_sb_is_v5(sbp) && |
63cd1e9b IK |
1757 | xfs_sb_has_ro_compat_feature(sbp, XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) { |
1758 | xfs_warn(mp, | |
1759 | "ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem", | |
1760 | (sbp->sb_features_ro_compat & | |
1761 | XFS_SB_FEAT_RO_COMPAT_UNKNOWN)); | |
1762 | return -EINVAL; | |
1763 | } | |
1764 | ||
2e973b2c | 1765 | clear_bit(XFS_OPSTATE_READONLY, &mp->m_opstate); |
63cd1e9b IK |
1766 | |
1767 | /* | |
1768 | * If this is the first remount to writeable state we might have some | |
1769 | * superblock changes to update. | |
1770 | */ | |
1771 | if (mp->m_update_sb) { | |
1772 | error = xfs_sync_sb(mp, false); | |
1773 | if (error) { | |
1774 | xfs_warn(mp, "failed to write sb changes"); | |
1775 | return error; | |
1776 | } | |
1777 | mp->m_update_sb = false; | |
1778 | } | |
1779 | ||
1780 | /* | |
1781 | * Fill out the reserve pool if it is empty. Use the stashed value if | |
1782 | * it is non-zero, otherwise go with the default. | |
1783 | */ | |
1784 | xfs_restore_resvblks(mp); | |
1785 | xfs_log_work_queue(mp); | |
c9a6526f | 1786 | xfs_blockgc_start(mp); |
63cd1e9b IK |
1787 | |
1788 | /* Create the per-AG metadata reservation pool .*/ | |
1789 | error = xfs_fs_reserve_ag_blocks(mp); | |
1790 | if (error && error != -ENOSPC) | |
1791 | return error; | |
1792 | ||
ab23a776 DC |
1793 | /* Re-enable the background inode inactivation worker. */ |
1794 | xfs_inodegc_start(mp); | |
1795 | ||
63cd1e9b IK |
1796 | return 0; |
1797 | } | |
1798 | ||
1799 | static int | |
1800 | xfs_remount_ro( | |
1801 | struct xfs_mount *mp) | |
1802 | { | |
089558bc DW |
1803 | struct xfs_icwalk icw = { |
1804 | .icw_flags = XFS_ICWALK_FLAG_SYNC, | |
1805 | }; | |
1806 | int error; | |
63cd1e9b | 1807 | |
b97cca3b DW |
1808 | /* Flush all the dirty data to disk. */ |
1809 | error = sync_filesystem(mp->m_super); | |
1810 | if (error) | |
1811 | return error; | |
1812 | ||
63cd1e9b IK |
1813 | /* |
1814 | * Cancel background eofb scanning so it cannot race with the final | |
1815 | * log force+buftarg wait and deadlock the remount. | |
1816 | */ | |
c9a6526f | 1817 | xfs_blockgc_stop(mp); |
63cd1e9b | 1818 | |
089558bc DW |
1819 | /* |
1820 | * Clear out all remaining COW staging extents and speculative post-EOF | |
1821 | * preallocations so that we don't leave inodes requiring inactivation | |
1822 | * cleanups during reclaim on a read-only mount. We must process every | |
1823 | * cached inode, so this requires a synchronous cache scan. | |
1824 | */ | |
1825 | error = xfs_blockgc_free_space(mp, &icw); | |
63cd1e9b IK |
1826 | if (error) { |
1827 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
1828 | return error; | |
1829 | } | |
1830 | ||
ab23a776 DC |
1831 | /* |
1832 | * Stop the inodegc background worker. xfs_fs_reconfigure already | |
1833 | * flushed all pending inodegc work when it sync'd the filesystem. | |
1834 | * The VFS holds s_umount, so we know that inodes cannot enter | |
1835 | * xfs_fs_destroy_inode during a remount operation. In readonly mode | |
1836 | * we send inodes straight to reclaim, so no inodes will be queued. | |
1837 | */ | |
1838 | xfs_inodegc_stop(mp); | |
1839 | ||
63cd1e9b IK |
1840 | /* Free the per-AG metadata reservation pool. */ |
1841 | error = xfs_fs_unreserve_ag_blocks(mp); | |
1842 | if (error) { | |
1843 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); | |
1844 | return error; | |
1845 | } | |
1846 | ||
1847 | /* | |
1848 | * Before we sync the metadata, we need to free up the reserve block | |
1849 | * pool so that the used block count in the superblock on disk is | |
1850 | * correct at the end of the remount. Stash the current* reserve pool | |
1851 | * size so that if we get remounted rw, we can return it to the same | |
1852 | * size. | |
1853 | */ | |
1854 | xfs_save_resvblks(mp); | |
1855 | ||
ea2064da | 1856 | xfs_log_clean(mp); |
2e973b2c | 1857 | set_bit(XFS_OPSTATE_READONLY, &mp->m_opstate); |
63cd1e9b IK |
1858 | |
1859 | return 0; | |
1860 | } | |
1861 | ||
1862 | /* | |
1863 | * Logically we would return an error here to prevent users from believing | |
1864 | * they might have changed mount options using remount which can't be changed. | |
1865 | * | |
1866 | * But unfortunately mount(8) adds all options from mtab and fstab to the mount | |
1867 | * arguments in some cases so we can't blindly reject options, but have to | |
1868 | * check for each specified option if it actually differs from the currently | |
1869 | * set option and only reject it if that's the case. | |
1870 | * | |
1871 | * Until that is implemented we return success for every remount request, and | |
1872 | * silently ignore all options that we can't actually change. | |
1873 | */ | |
1874 | static int | |
1e5c39df | 1875 | xfs_fs_reconfigure( |
63cd1e9b IK |
1876 | struct fs_context *fc) |
1877 | { | |
1878 | struct xfs_mount *mp = XFS_M(fc->root->d_sb); | |
1879 | struct xfs_mount *new_mp = fc->s_fs_info; | |
63cd1e9b IK |
1880 | int flags = fc->sb_flags; |
1881 | int error; | |
1882 | ||
4750a171 | 1883 | /* version 5 superblocks always support version counters. */ |
d6837c1a | 1884 | if (xfs_has_crc(mp)) |
4750a171 ES |
1885 | fc->sb_flags |= SB_I_VERSION; |
1886 | ||
1e5c39df | 1887 | error = xfs_fs_validate_params(new_mp); |
63cd1e9b IK |
1888 | if (error) |
1889 | return error; | |
1890 | ||
63cd1e9b | 1891 | /* inode32 -> inode64 */ |
0560f31a DC |
1892 | if (xfs_has_small_inums(mp) && !xfs_has_small_inums(new_mp)) { |
1893 | mp->m_features &= ~XFS_FEAT_SMALL_INUMS; | |
d6837c1a | 1894 | mp->m_maxagi = xfs_set_inode_alloc(mp, mp->m_sb.sb_agcount); |
63cd1e9b IK |
1895 | } |
1896 | ||
1897 | /* inode64 -> inode32 */ | |
0560f31a DC |
1898 | if (!xfs_has_small_inums(mp) && xfs_has_small_inums(new_mp)) { |
1899 | mp->m_features |= XFS_FEAT_SMALL_INUMS; | |
d6837c1a | 1900 | mp->m_maxagi = xfs_set_inode_alloc(mp, mp->m_sb.sb_agcount); |
63cd1e9b IK |
1901 | } |
1902 | ||
1903 | /* ro -> rw */ | |
2e973b2c | 1904 | if (xfs_is_readonly(mp) && !(flags & SB_RDONLY)) { |
63cd1e9b IK |
1905 | error = xfs_remount_rw(mp); |
1906 | if (error) | |
1907 | return error; | |
1908 | } | |
1909 | ||
1910 | /* rw -> ro */ | |
2e973b2c | 1911 | if (!xfs_is_readonly(mp) && (flags & SB_RDONLY)) { |
63cd1e9b IK |
1912 | error = xfs_remount_ro(mp); |
1913 | if (error) | |
1914 | return error; | |
1915 | } | |
1916 | ||
1917 | return 0; | |
1918 | } | |
1919 | ||
1e5c39df | 1920 | static void xfs_fs_free( |
73e5fff9 IK |
1921 | struct fs_context *fc) |
1922 | { | |
1923 | struct xfs_mount *mp = fc->s_fs_info; | |
1924 | ||
1925 | /* | |
1926 | * mp is stored in the fs_context when it is initialized. | |
1927 | * mp is transferred to the superblock on a successful mount, | |
1928 | * but if an error occurs before the transfer we have to free | |
1929 | * it here. | |
1930 | */ | |
1931 | if (mp) | |
1932 | xfs_mount_free(mp); | |
1933 | } | |
1934 | ||
1935 | static const struct fs_context_operations xfs_context_ops = { | |
1e5c39df DW |
1936 | .parse_param = xfs_fs_parse_param, |
1937 | .get_tree = xfs_fs_get_tree, | |
1938 | .reconfigure = xfs_fs_reconfigure, | |
1939 | .free = xfs_fs_free, | |
73e5fff9 IK |
1940 | }; |
1941 | ||
1942 | static int xfs_init_fs_context( | |
1943 | struct fs_context *fc) | |
1944 | { | |
1945 | struct xfs_mount *mp; | |
1946 | ||
50f83009 | 1947 | mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); |
73e5fff9 IK |
1948 | if (!mp) |
1949 | return -ENOMEM; | |
1950 | ||
50f83009 | 1951 | spin_lock_init(&mp->m_sb_lock); |
50f83009 IK |
1952 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC); |
1953 | spin_lock_init(&mp->m_perag_lock); | |
1954 | mutex_init(&mp->m_growlock); | |
f0f7a674 | 1955 | INIT_WORK(&mp->m_flush_inodes_work, xfs_flush_inodes_worker); |
50f83009 | 1956 | INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
50f83009 IK |
1957 | mp->m_kobj.kobject.kset = xfs_kset; |
1958 | /* | |
1959 | * We don't create the finobt per-ag space reservation until after log | |
1960 | * recovery, so we must set this to true so that an ifree transaction | |
1961 | * started during log recovery will not depend on space reservations | |
1962 | * for finobt expansion. | |
1963 | */ | |
1964 | mp->m_finobt_nores = true; | |
1965 | ||
73e5fff9 IK |
1966 | /* |
1967 | * These can be overridden by the mount option parsing. | |
1968 | */ | |
1969 | mp->m_logbufs = -1; | |
1970 | mp->m_logbsize = -1; | |
1971 | mp->m_allocsize_log = 16; /* 64k */ | |
1972 | ||
1973 | /* | |
1974 | * Copy binary VFS mount flags we are interested in. | |
1975 | */ | |
1976 | if (fc->sb_flags & SB_RDONLY) | |
2e973b2c | 1977 | set_bit(XFS_OPSTATE_READONLY, &mp->m_opstate); |
73e5fff9 | 1978 | if (fc->sb_flags & SB_DIRSYNC) |
0560f31a | 1979 | mp->m_features |= XFS_FEAT_DIRSYNC; |
73e5fff9 | 1980 | if (fc->sb_flags & SB_SYNCHRONOUS) |
0560f31a | 1981 | mp->m_features |= XFS_FEAT_WSYNC; |
73e5fff9 IK |
1982 | |
1983 | fc->s_fs_info = mp; | |
1984 | fc->ops = &xfs_context_ops; | |
1985 | ||
1986 | return 0; | |
1987 | } | |
1988 | ||
5085b607 | 1989 | static struct file_system_type xfs_fs_type = { |
1da177e4 LT |
1990 | .owner = THIS_MODULE, |
1991 | .name = "xfs", | |
73e5fff9 | 1992 | .init_fs_context = xfs_init_fs_context, |
d7167b14 | 1993 | .parameters = xfs_fs_parameters, |
1da177e4 | 1994 | .kill_sb = kill_block_super, |
f736d93d | 1995 | .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, |
1da177e4 | 1996 | }; |
7f78e035 | 1997 | MODULE_ALIAS_FS("xfs"); |
1da177e4 | 1998 | |
9f8868ff | 1999 | STATIC int __init |
182696fb | 2000 | xfs_init_caches(void) |
9f8868ff | 2001 | { |
9fa47bdc DW |
2002 | int error; |
2003 | ||
231f91ab DC |
2004 | xfs_buf_cache = kmem_cache_create("xfs_buf", sizeof(struct xfs_buf), 0, |
2005 | SLAB_HWCACHE_ALIGN | | |
2006 | SLAB_RECLAIM_ACCOUNT | | |
2007 | SLAB_MEM_SPREAD, | |
2008 | NULL); | |
2009 | if (!xfs_buf_cache) | |
2010 | goto out; | |
2011 | ||
182696fb | 2012 | xfs_log_ticket_cache = kmem_cache_create("xfs_log_ticket", |
b1231760 CM |
2013 | sizeof(struct xlog_ticket), |
2014 | 0, 0, NULL); | |
182696fb | 2015 | if (!xfs_log_ticket_cache) |
231f91ab | 2016 | goto out_destroy_buf_cache; |
9f8868ff | 2017 | |
9fa47bdc DW |
2018 | error = xfs_btree_init_cur_caches(); |
2019 | if (error) | |
c201d9ca | 2020 | goto out_destroy_log_ticket_cache; |
9f8868ff | 2021 | |
f3c799c2 DW |
2022 | error = xfs_defer_init_item_caches(); |
2023 | if (error) | |
2024 | goto out_destroy_btree_cur_cache; | |
2025 | ||
182696fb | 2026 | xfs_da_state_cache = kmem_cache_create("xfs_da_state", |
b1231760 CM |
2027 | sizeof(struct xfs_da_state), |
2028 | 0, 0, NULL); | |
182696fb | 2029 | if (!xfs_da_state_cache) |
f3c799c2 | 2030 | goto out_destroy_defer_item_cache; |
9f8868ff | 2031 | |
182696fb | 2032 | xfs_ifork_cache = kmem_cache_create("xfs_ifork", |
b1231760 CM |
2033 | sizeof(struct xfs_ifork), |
2034 | 0, 0, NULL); | |
182696fb DW |
2035 | if (!xfs_ifork_cache) |
2036 | goto out_destroy_da_state_cache; | |
9f8868ff | 2037 | |
182696fb | 2038 | xfs_trans_cache = kmem_cache_create("xfs_trans", |
b1231760 CM |
2039 | sizeof(struct xfs_trans), |
2040 | 0, 0, NULL); | |
182696fb DW |
2041 | if (!xfs_trans_cache) |
2042 | goto out_destroy_ifork_cache; | |
9f8868ff | 2043 | |
e98c414f | 2044 | |
9f8868ff | 2045 | /* |
182696fb | 2046 | * The size of the cache-allocated buf log item is the maximum |
9f8868ff CH |
2047 | * size possible under XFS. This wastes a little bit of memory, |
2048 | * but it is much faster. | |
2049 | */ | |
182696fb | 2050 | xfs_buf_item_cache = kmem_cache_create("xfs_buf_item", |
b1231760 CM |
2051 | sizeof(struct xfs_buf_log_item), |
2052 | 0, 0, NULL); | |
182696fb DW |
2053 | if (!xfs_buf_item_cache) |
2054 | goto out_destroy_trans_cache; | |
9f8868ff | 2055 | |
182696fb | 2056 | xfs_efd_cache = kmem_cache_create("xfs_efd_item", |
3c5aaace DW |
2057 | xfs_efd_log_item_sizeof(XFS_EFD_MAX_FAST_EXTENTS), |
2058 | 0, 0, NULL); | |
182696fb DW |
2059 | if (!xfs_efd_cache) |
2060 | goto out_destroy_buf_item_cache; | |
9f8868ff | 2061 | |
182696fb | 2062 | xfs_efi_cache = kmem_cache_create("xfs_efi_item", |
3c5aaace DW |
2063 | xfs_efi_log_item_sizeof(XFS_EFI_MAX_FAST_EXTENTS), |
2064 | 0, 0, NULL); | |
182696fb DW |
2065 | if (!xfs_efi_cache) |
2066 | goto out_destroy_efd_cache; | |
9f8868ff | 2067 | |
182696fb | 2068 | xfs_inode_cache = kmem_cache_create("xfs_inode", |
b1231760 CM |
2069 | sizeof(struct xfs_inode), 0, |
2070 | (SLAB_HWCACHE_ALIGN | | |
2071 | SLAB_RECLAIM_ACCOUNT | | |
2072 | SLAB_MEM_SPREAD | SLAB_ACCOUNT), | |
2073 | xfs_fs_inode_init_once); | |
182696fb DW |
2074 | if (!xfs_inode_cache) |
2075 | goto out_destroy_efi_cache; | |
9f8868ff | 2076 | |
182696fb | 2077 | xfs_ili_cache = kmem_cache_create("xfs_ili", |
b1231760 | 2078 | sizeof(struct xfs_inode_log_item), 0, |
d59eadae DC |
2079 | SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, |
2080 | NULL); | |
182696fb DW |
2081 | if (!xfs_ili_cache) |
2082 | goto out_destroy_inode_cache; | |
b1231760 | 2083 | |
182696fb | 2084 | xfs_icreate_cache = kmem_cache_create("xfs_icr", |
b1231760 CM |
2085 | sizeof(struct xfs_icreate_item), |
2086 | 0, 0, NULL); | |
182696fb DW |
2087 | if (!xfs_icreate_cache) |
2088 | goto out_destroy_ili_cache; | |
9f8868ff | 2089 | |
182696fb | 2090 | xfs_rud_cache = kmem_cache_create("xfs_rud_item", |
b1231760 CM |
2091 | sizeof(struct xfs_rud_log_item), |
2092 | 0, 0, NULL); | |
182696fb DW |
2093 | if (!xfs_rud_cache) |
2094 | goto out_destroy_icreate_cache; | |
5880f2d7 | 2095 | |
182696fb | 2096 | xfs_rui_cache = kmem_cache_create("xfs_rui_item", |
cd00158c | 2097 | xfs_rui_log_item_sizeof(XFS_RUI_MAX_FAST_EXTENTS), |
b1231760 | 2098 | 0, 0, NULL); |
182696fb DW |
2099 | if (!xfs_rui_cache) |
2100 | goto out_destroy_rud_cache; | |
5880f2d7 | 2101 | |
182696fb | 2102 | xfs_cud_cache = kmem_cache_create("xfs_cud_item", |
b1231760 CM |
2103 | sizeof(struct xfs_cud_log_item), |
2104 | 0, 0, NULL); | |
182696fb DW |
2105 | if (!xfs_cud_cache) |
2106 | goto out_destroy_rui_cache; | |
baf4bcac | 2107 | |
182696fb | 2108 | xfs_cui_cache = kmem_cache_create("xfs_cui_item", |
baf4bcac | 2109 | xfs_cui_log_item_sizeof(XFS_CUI_MAX_FAST_EXTENTS), |
b1231760 | 2110 | 0, 0, NULL); |
182696fb DW |
2111 | if (!xfs_cui_cache) |
2112 | goto out_destroy_cud_cache; | |
baf4bcac | 2113 | |
182696fb | 2114 | xfs_bud_cache = kmem_cache_create("xfs_bud_item", |
b1231760 CM |
2115 | sizeof(struct xfs_bud_log_item), |
2116 | 0, 0, NULL); | |
182696fb DW |
2117 | if (!xfs_bud_cache) |
2118 | goto out_destroy_cui_cache; | |
6413a014 | 2119 | |
182696fb | 2120 | xfs_bui_cache = kmem_cache_create("xfs_bui_item", |
6413a014 | 2121 | xfs_bui_log_item_sizeof(XFS_BUI_MAX_FAST_EXTENTS), |
b1231760 | 2122 | 0, 0, NULL); |
182696fb DW |
2123 | if (!xfs_bui_cache) |
2124 | goto out_destroy_bud_cache; | |
6413a014 | 2125 | |
4136e38a DW |
2126 | xfs_attrd_cache = kmem_cache_create("xfs_attrd_item", |
2127 | sizeof(struct xfs_attrd_log_item), | |
2128 | 0, 0, NULL); | |
2129 | if (!xfs_attrd_cache) | |
2130 | goto out_destroy_bui_cache; | |
2131 | ||
2132 | xfs_attri_cache = kmem_cache_create("xfs_attri_item", | |
2133 | sizeof(struct xfs_attri_log_item), | |
2134 | 0, 0, NULL); | |
2135 | if (!xfs_attri_cache) | |
2136 | goto out_destroy_attrd_cache; | |
2137 | ||
784eb7d8 DC |
2138 | xfs_iunlink_cache = kmem_cache_create("xfs_iul_item", |
2139 | sizeof(struct xfs_iunlink_item), | |
2140 | 0, 0, NULL); | |
2141 | if (!xfs_iunlink_cache) | |
2142 | goto out_destroy_attri_cache; | |
2143 | ||
9f8868ff CH |
2144 | return 0; |
2145 | ||
784eb7d8 DC |
2146 | out_destroy_attri_cache: |
2147 | kmem_cache_destroy(xfs_attri_cache); | |
4136e38a DW |
2148 | out_destroy_attrd_cache: |
2149 | kmem_cache_destroy(xfs_attrd_cache); | |
2150 | out_destroy_bui_cache: | |
2151 | kmem_cache_destroy(xfs_bui_cache); | |
182696fb DW |
2152 | out_destroy_bud_cache: |
2153 | kmem_cache_destroy(xfs_bud_cache); | |
2154 | out_destroy_cui_cache: | |
2155 | kmem_cache_destroy(xfs_cui_cache); | |
2156 | out_destroy_cud_cache: | |
2157 | kmem_cache_destroy(xfs_cud_cache); | |
2158 | out_destroy_rui_cache: | |
2159 | kmem_cache_destroy(xfs_rui_cache); | |
2160 | out_destroy_rud_cache: | |
2161 | kmem_cache_destroy(xfs_rud_cache); | |
2162 | out_destroy_icreate_cache: | |
2163 | kmem_cache_destroy(xfs_icreate_cache); | |
2164 | out_destroy_ili_cache: | |
2165 | kmem_cache_destroy(xfs_ili_cache); | |
2166 | out_destroy_inode_cache: | |
2167 | kmem_cache_destroy(xfs_inode_cache); | |
2168 | out_destroy_efi_cache: | |
2169 | kmem_cache_destroy(xfs_efi_cache); | |
2170 | out_destroy_efd_cache: | |
2171 | kmem_cache_destroy(xfs_efd_cache); | |
2172 | out_destroy_buf_item_cache: | |
2173 | kmem_cache_destroy(xfs_buf_item_cache); | |
2174 | out_destroy_trans_cache: | |
2175 | kmem_cache_destroy(xfs_trans_cache); | |
2176 | out_destroy_ifork_cache: | |
2177 | kmem_cache_destroy(xfs_ifork_cache); | |
2178 | out_destroy_da_state_cache: | |
2179 | kmem_cache_destroy(xfs_da_state_cache); | |
f3c799c2 DW |
2180 | out_destroy_defer_item_cache: |
2181 | xfs_defer_destroy_item_caches(); | |
182696fb | 2182 | out_destroy_btree_cur_cache: |
9fa47bdc | 2183 | xfs_btree_destroy_cur_caches(); |
182696fb DW |
2184 | out_destroy_log_ticket_cache: |
2185 | kmem_cache_destroy(xfs_log_ticket_cache); | |
231f91ab DC |
2186 | out_destroy_buf_cache: |
2187 | kmem_cache_destroy(xfs_buf_cache); | |
9f8868ff CH |
2188 | out: |
2189 | return -ENOMEM; | |
2190 | } | |
2191 | ||
2192 | STATIC void | |
182696fb | 2193 | xfs_destroy_caches(void) |
9f8868ff | 2194 | { |
8c0a8537 KS |
2195 | /* |
2196 | * Make sure all delayed rcu free are flushed before we | |
2197 | * destroy caches. | |
2198 | */ | |
2199 | rcu_barrier(); | |
784eb7d8 | 2200 | kmem_cache_destroy(xfs_iunlink_cache); |
4136e38a DW |
2201 | kmem_cache_destroy(xfs_attri_cache); |
2202 | kmem_cache_destroy(xfs_attrd_cache); | |
182696fb DW |
2203 | kmem_cache_destroy(xfs_bui_cache); |
2204 | kmem_cache_destroy(xfs_bud_cache); | |
2205 | kmem_cache_destroy(xfs_cui_cache); | |
2206 | kmem_cache_destroy(xfs_cud_cache); | |
2207 | kmem_cache_destroy(xfs_rui_cache); | |
2208 | kmem_cache_destroy(xfs_rud_cache); | |
2209 | kmem_cache_destroy(xfs_icreate_cache); | |
2210 | kmem_cache_destroy(xfs_ili_cache); | |
2211 | kmem_cache_destroy(xfs_inode_cache); | |
2212 | kmem_cache_destroy(xfs_efi_cache); | |
2213 | kmem_cache_destroy(xfs_efd_cache); | |
2214 | kmem_cache_destroy(xfs_buf_item_cache); | |
2215 | kmem_cache_destroy(xfs_trans_cache); | |
2216 | kmem_cache_destroy(xfs_ifork_cache); | |
2217 | kmem_cache_destroy(xfs_da_state_cache); | |
f3c799c2 | 2218 | xfs_defer_destroy_item_caches(); |
9fa47bdc | 2219 | xfs_btree_destroy_cur_caches(); |
182696fb | 2220 | kmem_cache_destroy(xfs_log_ticket_cache); |
231f91ab | 2221 | kmem_cache_destroy(xfs_buf_cache); |
9f8868ff | 2222 | } |
1da177e4 | 2223 | |
0bf6a5bd DC |
2224 | STATIC int __init |
2225 | xfs_init_workqueues(void) | |
2226 | { | |
c999a223 DC |
2227 | /* |
2228 | * The allocation workqueue can be used in memory reclaim situations | |
2229 | * (writepage path), and parallelism is only limited by the number of | |
2230 | * AGs in all the filesystems mounted. Hence use the default large | |
2231 | * max_active value for this workqueue. | |
2232 | */ | |
8018ec08 | 2233 | xfs_alloc_wq = alloc_workqueue("xfsalloc", |
05a302a1 | 2234 | XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_FREEZABLE), 0); |
c999a223 | 2235 | if (!xfs_alloc_wq) |
5889608d | 2236 | return -ENOMEM; |
c999a223 | 2237 | |
05a302a1 DW |
2238 | xfs_discard_wq = alloc_workqueue("xfsdiscard", XFS_WQFLAGS(WQ_UNBOUND), |
2239 | 0); | |
4560e78f CH |
2240 | if (!xfs_discard_wq) |
2241 | goto out_free_alloc_wq; | |
2242 | ||
0bf6a5bd | 2243 | return 0; |
4560e78f CH |
2244 | out_free_alloc_wq: |
2245 | destroy_workqueue(xfs_alloc_wq); | |
2246 | return -ENOMEM; | |
0bf6a5bd DC |
2247 | } |
2248 | ||
39411f81 | 2249 | STATIC void |
0bf6a5bd DC |
2250 | xfs_destroy_workqueues(void) |
2251 | { | |
4560e78f | 2252 | destroy_workqueue(xfs_discard_wq); |
c999a223 | 2253 | destroy_workqueue(xfs_alloc_wq); |
0bf6a5bd DC |
2254 | } |
2255 | ||
f1653c2e DC |
2256 | #ifdef CONFIG_HOTPLUG_CPU |
2257 | static int | |
2258 | xfs_cpu_dead( | |
2259 | unsigned int cpu) | |
2260 | { | |
0ed17f01 DC |
2261 | struct xfs_mount *mp, *n; |
2262 | ||
2263 | spin_lock(&xfs_mount_list_lock); | |
2264 | list_for_each_entry_safe(mp, n, &xfs_mount_list, m_mount_list) { | |
2265 | spin_unlock(&xfs_mount_list_lock); | |
ab23a776 | 2266 | xfs_inodegc_cpu_dead(mp, cpu); |
af1c2146 | 2267 | xlog_cil_pcp_dead(mp->m_log, cpu); |
0ed17f01 DC |
2268 | spin_lock(&xfs_mount_list_lock); |
2269 | } | |
2270 | spin_unlock(&xfs_mount_list_lock); | |
f1653c2e DC |
2271 | return 0; |
2272 | } | |
2273 | ||
2274 | static int __init | |
2275 | xfs_cpu_hotplug_init(void) | |
2276 | { | |
2277 | int error; | |
2278 | ||
2279 | error = cpuhp_setup_state_nocalls(CPUHP_XFS_DEAD, "xfs:dead", NULL, | |
2280 | xfs_cpu_dead); | |
2281 | if (error < 0) | |
2282 | xfs_alert(NULL, | |
2283 | "Failed to initialise CPU hotplug, error %d. XFS is non-functional.", | |
2284 | error); | |
2285 | return error; | |
2286 | } | |
2287 | ||
2288 | static void | |
2289 | xfs_cpu_hotplug_destroy(void) | |
2290 | { | |
2291 | cpuhp_remove_state_nocalls(CPUHP_XFS_DEAD); | |
2292 | } | |
2293 | ||
2294 | #else /* !CONFIG_HOTPLUG_CPU */ | |
2295 | static inline int xfs_cpu_hotplug_init(void) { return 0; } | |
2296 | static inline void xfs_cpu_hotplug_destroy(void) {} | |
2297 | #endif | |
2298 | ||
1da177e4 | 2299 | STATIC int __init |
9f8868ff | 2300 | init_xfs_fs(void) |
1da177e4 LT |
2301 | { |
2302 | int error; | |
1da177e4 | 2303 | |
30cbc591 DW |
2304 | xfs_check_ondisk_structs(); |
2305 | ||
3cfb9290 DW |
2306 | error = xfs_dahash_test(); |
2307 | if (error) | |
2308 | return error; | |
2309 | ||
65795910 CH |
2310 | printk(KERN_INFO XFS_VERSION_STRING " with " |
2311 | XFS_BUILD_OPTIONS " enabled\n"); | |
1da177e4 | 2312 | |
9f8868ff | 2313 | xfs_dir_startup(); |
1da177e4 | 2314 | |
f1653c2e | 2315 | error = xfs_cpu_hotplug_init(); |
9f8868ff CH |
2316 | if (error) |
2317 | goto out; | |
2318 | ||
182696fb | 2319 | error = xfs_init_caches(); |
f1653c2e DC |
2320 | if (error) |
2321 | goto out_destroy_hp; | |
2322 | ||
0bf6a5bd | 2323 | error = xfs_init_workqueues(); |
9f8868ff | 2324 | if (error) |
182696fb | 2325 | goto out_destroy_caches; |
9f8868ff | 2326 | |
0bf6a5bd DC |
2327 | error = xfs_mru_cache_init(); |
2328 | if (error) | |
2329 | goto out_destroy_wq; | |
2330 | ||
9f8868ff CH |
2331 | error = xfs_init_procfs(); |
2332 | if (error) | |
231f91ab | 2333 | goto out_mru_cache_uninit; |
9f8868ff CH |
2334 | |
2335 | error = xfs_sysctl_register(); | |
2336 | if (error) | |
2337 | goto out_cleanup_procfs; | |
1da177e4 | 2338 | |
3d871226 BF |
2339 | xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
2340 | if (!xfs_kset) { | |
2341 | error = -ENOMEM; | |
bb230c12 | 2342 | goto out_sysctl_unregister; |
3d871226 BF |
2343 | } |
2344 | ||
80529c45 BD |
2345 | xfsstats.xs_kobj.kobject.kset = xfs_kset; |
2346 | ||
2347 | xfsstats.xs_stats = alloc_percpu(struct xfsstats); | |
2348 | if (!xfsstats.xs_stats) { | |
2349 | error = -ENOMEM; | |
2350 | goto out_kset_unregister; | |
2351 | } | |
2352 | ||
2353 | error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL, | |
bb230c12 BD |
2354 | "stats"); |
2355 | if (error) | |
80529c45 | 2356 | goto out_free_stats; |
bb230c12 | 2357 | |
65b65735 BF |
2358 | #ifdef DEBUG |
2359 | xfs_dbg_kobj.kobject.kset = xfs_kset; | |
2360 | error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); | |
a05931ce | 2361 | if (error) |
bb230c12 | 2362 | goto out_remove_stats_kobj; |
65b65735 BF |
2363 | #endif |
2364 | ||
2365 | error = xfs_qm_init(); | |
2366 | if (error) | |
bb230c12 | 2367 | goto out_remove_dbg_kobj; |
1da177e4 LT |
2368 | |
2369 | error = register_filesystem(&xfs_fs_type); | |
2370 | if (error) | |
a05931ce | 2371 | goto out_qm_exit; |
1da177e4 LT |
2372 | return 0; |
2373 | ||
a05931ce CH |
2374 | out_qm_exit: |
2375 | xfs_qm_exit(); | |
bb230c12 | 2376 | out_remove_dbg_kobj: |
65b65735 BF |
2377 | #ifdef DEBUG |
2378 | xfs_sysfs_del(&xfs_dbg_kobj); | |
bb230c12 | 2379 | out_remove_stats_kobj: |
65b65735 | 2380 | #endif |
80529c45 BD |
2381 | xfs_sysfs_del(&xfsstats.xs_kobj); |
2382 | out_free_stats: | |
2383 | free_percpu(xfsstats.xs_stats); | |
bb230c12 | 2384 | out_kset_unregister: |
3d871226 | 2385 | kset_unregister(xfs_kset); |
9f8868ff CH |
2386 | out_sysctl_unregister: |
2387 | xfs_sysctl_unregister(); | |
2388 | out_cleanup_procfs: | |
2389 | xfs_cleanup_procfs(); | |
9f8868ff CH |
2390 | out_mru_cache_uninit: |
2391 | xfs_mru_cache_uninit(); | |
0bf6a5bd DC |
2392 | out_destroy_wq: |
2393 | xfs_destroy_workqueues(); | |
182696fb DW |
2394 | out_destroy_caches: |
2395 | xfs_destroy_caches(); | |
f1653c2e DC |
2396 | out_destroy_hp: |
2397 | xfs_cpu_hotplug_destroy(); | |
9f8868ff | 2398 | out: |
1da177e4 LT |
2399 | return error; |
2400 | } | |
2401 | ||
2402 | STATIC void __exit | |
9f8868ff | 2403 | exit_xfs_fs(void) |
1da177e4 | 2404 | { |
a05931ce | 2405 | xfs_qm_exit(); |
1da177e4 | 2406 | unregister_filesystem(&xfs_fs_type); |
65b65735 BF |
2407 | #ifdef DEBUG |
2408 | xfs_sysfs_del(&xfs_dbg_kobj); | |
2409 | #endif | |
80529c45 BD |
2410 | xfs_sysfs_del(&xfsstats.xs_kobj); |
2411 | free_percpu(xfsstats.xs_stats); | |
3d871226 | 2412 | kset_unregister(xfs_kset); |
9f8868ff CH |
2413 | xfs_sysctl_unregister(); |
2414 | xfs_cleanup_procfs(); | |
9f8868ff | 2415 | xfs_mru_cache_uninit(); |
0bf6a5bd | 2416 | xfs_destroy_workqueues(); |
182696fb | 2417 | xfs_destroy_caches(); |
af3b6382 | 2418 | xfs_uuid_table_free(); |
f1653c2e | 2419 | xfs_cpu_hotplug_destroy(); |
1da177e4 LT |
2420 | } |
2421 | ||
2422 | module_init(init_xfs_fs); | |
2423 | module_exit(exit_xfs_fs); | |
2424 | ||
2425 | MODULE_AUTHOR("Silicon Graphics, Inc."); | |
2426 | MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); | |
2427 | MODULE_LICENSE("GPL"); |