Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
da6dd40d | 3 | * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
9e6e0a12 | 10 | #include <linux/bio.h> |
b3b94faa DT |
11 | #include <linux/sched.h> |
12 | #include <linux/slab.h> | |
13 | #include <linux/spinlock.h> | |
14 | #include <linux/completion.h> | |
15 | #include <linux/buffer_head.h> | |
9e6e0a12 SW |
16 | #include <linux/statfs.h> |
17 | #include <linux/seq_file.h> | |
18 | #include <linux/mount.h> | |
19 | #include <linux/kthread.h> | |
20 | #include <linux/delay.h> | |
5c676f6d | 21 | #include <linux/gfs2_ondisk.h> |
9e6e0a12 SW |
22 | #include <linux/crc32.h> |
23 | #include <linux/time.h> | |
e402746a | 24 | #include <linux/wait.h> |
a9185b41 | 25 | #include <linux/writeback.h> |
4667a0ec | 26 | #include <linux/backing-dev.h> |
b3b94faa DT |
27 | |
28 | #include "gfs2.h" | |
5c676f6d | 29 | #include "incore.h" |
b3b94faa DT |
30 | #include "bmap.h" |
31 | #include "dir.h" | |
b3b94faa DT |
32 | #include "glock.h" |
33 | #include "glops.h" | |
34 | #include "inode.h" | |
35 | #include "log.h" | |
36 | #include "meta_io.h" | |
37 | #include "quota.h" | |
38 | #include "recovery.h" | |
39 | #include "rgrp.h" | |
40 | #include "super.h" | |
41 | #include "trans.h" | |
5c676f6d | 42 | #include "util.h" |
9e6e0a12 | 43 | #include "sys.h" |
307cf6e6 | 44 | #include "xattr.h" |
9e6e0a12 SW |
45 | |
46 | #define args_neq(a1, a2, x) ((a1)->ar_##x != (a2)->ar_##x) | |
47 | ||
48 | enum { | |
49 | Opt_lockproto, | |
50 | Opt_locktable, | |
51 | Opt_hostdata, | |
52 | Opt_spectator, | |
53 | Opt_ignore_local_fs, | |
54 | Opt_localflocks, | |
55 | Opt_localcaching, | |
56 | Opt_debug, | |
57 | Opt_nodebug, | |
58 | Opt_upgrade, | |
59 | Opt_acl, | |
60 | Opt_noacl, | |
61 | Opt_quota_off, | |
62 | Opt_quota_account, | |
63 | Opt_quota_on, | |
64 | Opt_quota, | |
65 | Opt_noquota, | |
66 | Opt_suiddir, | |
67 | Opt_nosuiddir, | |
68 | Opt_data_writeback, | |
69 | Opt_data_ordered, | |
70 | Opt_meta, | |
71 | Opt_discard, | |
72 | Opt_nodiscard, | |
73 | Opt_commit, | |
d34843d0 BP |
74 | Opt_err_withdraw, |
75 | Opt_err_panic, | |
3d3c10f2 BM |
76 | Opt_statfs_quantum, |
77 | Opt_statfs_percent, | |
78 | Opt_quota_quantum, | |
f25934c5 CH |
79 | Opt_barrier, |
80 | Opt_nobarrier, | |
90306c41 BM |
81 | Opt_rgrplvb, |
82 | Opt_norgrplvb, | |
9e6e0a12 SW |
83 | Opt_error, |
84 | }; | |
85 | ||
86 | static const match_table_t tokens = { | |
87 | {Opt_lockproto, "lockproto=%s"}, | |
88 | {Opt_locktable, "locktable=%s"}, | |
89 | {Opt_hostdata, "hostdata=%s"}, | |
90 | {Opt_spectator, "spectator"}, | |
43f74c19 | 91 | {Opt_spectator, "norecovery"}, |
9e6e0a12 SW |
92 | {Opt_ignore_local_fs, "ignore_local_fs"}, |
93 | {Opt_localflocks, "localflocks"}, | |
94 | {Opt_localcaching, "localcaching"}, | |
95 | {Opt_debug, "debug"}, | |
96 | {Opt_nodebug, "nodebug"}, | |
97 | {Opt_upgrade, "upgrade"}, | |
98 | {Opt_acl, "acl"}, | |
99 | {Opt_noacl, "noacl"}, | |
100 | {Opt_quota_off, "quota=off"}, | |
101 | {Opt_quota_account, "quota=account"}, | |
102 | {Opt_quota_on, "quota=on"}, | |
103 | {Opt_quota, "quota"}, | |
104 | {Opt_noquota, "noquota"}, | |
105 | {Opt_suiddir, "suiddir"}, | |
106 | {Opt_nosuiddir, "nosuiddir"}, | |
107 | {Opt_data_writeback, "data=writeback"}, | |
108 | {Opt_data_ordered, "data=ordered"}, | |
109 | {Opt_meta, "meta"}, | |
110 | {Opt_discard, "discard"}, | |
111 | {Opt_nodiscard, "nodiscard"}, | |
112 | {Opt_commit, "commit=%d"}, | |
d34843d0 BP |
113 | {Opt_err_withdraw, "errors=withdraw"}, |
114 | {Opt_err_panic, "errors=panic"}, | |
3d3c10f2 BM |
115 | {Opt_statfs_quantum, "statfs_quantum=%d"}, |
116 | {Opt_statfs_percent, "statfs_percent=%d"}, | |
117 | {Opt_quota_quantum, "quota_quantum=%d"}, | |
f25934c5 CH |
118 | {Opt_barrier, "barrier"}, |
119 | {Opt_nobarrier, "nobarrier"}, | |
90306c41 BM |
120 | {Opt_rgrplvb, "rgrplvb"}, |
121 | {Opt_norgrplvb, "norgrplvb"}, | |
9e6e0a12 SW |
122 | {Opt_error, NULL} |
123 | }; | |
124 | ||
125 | /** | |
126 | * gfs2_mount_args - Parse mount options | |
f55073ff SW |
127 | * @args: The structure into which the parsed options will be written |
128 | * @options: The options to parse | |
9e6e0a12 SW |
129 | * |
130 | * Return: errno | |
131 | */ | |
132 | ||
f55073ff | 133 | int gfs2_mount_args(struct gfs2_args *args, char *options) |
9e6e0a12 SW |
134 | { |
135 | char *o; | |
136 | int token; | |
137 | substring_t tmp[MAX_OPT_ARGS]; | |
138 | int rv; | |
139 | ||
140 | /* Split the options into tokens with the "," character and | |
141 | process them */ | |
142 | ||
143 | while (1) { | |
144 | o = strsep(&options, ","); | |
145 | if (o == NULL) | |
146 | break; | |
147 | if (*o == '\0') | |
148 | continue; | |
149 | ||
150 | token = match_token(o, tokens, tmp); | |
151 | switch (token) { | |
152 | case Opt_lockproto: | |
153 | match_strlcpy(args->ar_lockproto, &tmp[0], | |
154 | GFS2_LOCKNAME_LEN); | |
155 | break; | |
156 | case Opt_locktable: | |
157 | match_strlcpy(args->ar_locktable, &tmp[0], | |
158 | GFS2_LOCKNAME_LEN); | |
159 | break; | |
160 | case Opt_hostdata: | |
161 | match_strlcpy(args->ar_hostdata, &tmp[0], | |
162 | GFS2_LOCKNAME_LEN); | |
163 | break; | |
164 | case Opt_spectator: | |
165 | args->ar_spectator = 1; | |
166 | break; | |
167 | case Opt_ignore_local_fs: | |
f57a024e | 168 | /* Retained for backwards compat only */ |
9e6e0a12 SW |
169 | break; |
170 | case Opt_localflocks: | |
171 | args->ar_localflocks = 1; | |
172 | break; | |
173 | case Opt_localcaching: | |
c2048b00 | 174 | /* Retained for backwards compat only */ |
9e6e0a12 SW |
175 | break; |
176 | case Opt_debug: | |
d34843d0 | 177 | if (args->ar_errors == GFS2_ERRORS_PANIC) { |
f55073ff | 178 | printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " |
d34843d0 BP |
179 | "are mutually exclusive.\n"); |
180 | return -EINVAL; | |
181 | } | |
9e6e0a12 SW |
182 | args->ar_debug = 1; |
183 | break; | |
184 | case Opt_nodebug: | |
185 | args->ar_debug = 0; | |
186 | break; | |
187 | case Opt_upgrade: | |
c80dbb58 | 188 | /* Retained for backwards compat only */ |
9e6e0a12 SW |
189 | break; |
190 | case Opt_acl: | |
191 | args->ar_posix_acl = 1; | |
192 | break; | |
193 | case Opt_noacl: | |
194 | args->ar_posix_acl = 0; | |
195 | break; | |
196 | case Opt_quota_off: | |
197 | case Opt_noquota: | |
198 | args->ar_quota = GFS2_QUOTA_OFF; | |
199 | break; | |
200 | case Opt_quota_account: | |
201 | args->ar_quota = GFS2_QUOTA_ACCOUNT; | |
202 | break; | |
203 | case Opt_quota_on: | |
204 | case Opt_quota: | |
205 | args->ar_quota = GFS2_QUOTA_ON; | |
206 | break; | |
207 | case Opt_suiddir: | |
208 | args->ar_suiddir = 1; | |
209 | break; | |
210 | case Opt_nosuiddir: | |
211 | args->ar_suiddir = 0; | |
212 | break; | |
213 | case Opt_data_writeback: | |
214 | args->ar_data = GFS2_DATA_WRITEBACK; | |
215 | break; | |
216 | case Opt_data_ordered: | |
217 | args->ar_data = GFS2_DATA_ORDERED; | |
218 | break; | |
219 | case Opt_meta: | |
220 | args->ar_meta = 1; | |
221 | break; | |
222 | case Opt_discard: | |
223 | args->ar_discard = 1; | |
224 | break; | |
225 | case Opt_nodiscard: | |
226 | args->ar_discard = 0; | |
227 | break; | |
228 | case Opt_commit: | |
229 | rv = match_int(&tmp[0], &args->ar_commit); | |
230 | if (rv || args->ar_commit <= 0) { | |
f55073ff | 231 | printk(KERN_WARNING "GFS2: commit mount option requires a positive numeric argument\n"); |
9e6e0a12 SW |
232 | return rv ? rv : -EINVAL; |
233 | } | |
234 | break; | |
3d3c10f2 BM |
235 | case Opt_statfs_quantum: |
236 | rv = match_int(&tmp[0], &args->ar_statfs_quantum); | |
237 | if (rv || args->ar_statfs_quantum < 0) { | |
238 | printk(KERN_WARNING "GFS2: statfs_quantum mount option requires a non-negative numeric argument\n"); | |
239 | return rv ? rv : -EINVAL; | |
240 | } | |
241 | break; | |
242 | case Opt_quota_quantum: | |
243 | rv = match_int(&tmp[0], &args->ar_quota_quantum); | |
244 | if (rv || args->ar_quota_quantum <= 0) { | |
245 | printk(KERN_WARNING "GFS2: quota_quantum mount option requires a positive numeric argument\n"); | |
246 | return rv ? rv : -EINVAL; | |
247 | } | |
248 | break; | |
249 | case Opt_statfs_percent: | |
250 | rv = match_int(&tmp[0], &args->ar_statfs_percent); | |
251 | if (rv || args->ar_statfs_percent < 0 || | |
252 | args->ar_statfs_percent > 100) { | |
253 | printk(KERN_WARNING "statfs_percent mount option requires a numeric argument between 0 and 100\n"); | |
254 | return rv ? rv : -EINVAL; | |
255 | } | |
256 | break; | |
d34843d0 BP |
257 | case Opt_err_withdraw: |
258 | args->ar_errors = GFS2_ERRORS_WITHDRAW; | |
259 | break; | |
260 | case Opt_err_panic: | |
261 | if (args->ar_debug) { | |
f55073ff | 262 | printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " |
d34843d0 BP |
263 | "are mutually exclusive.\n"); |
264 | return -EINVAL; | |
265 | } | |
266 | args->ar_errors = GFS2_ERRORS_PANIC; | |
267 | break; | |
f25934c5 CH |
268 | case Opt_barrier: |
269 | args->ar_nobarrier = 0; | |
270 | break; | |
271 | case Opt_nobarrier: | |
272 | args->ar_nobarrier = 1; | |
273 | break; | |
90306c41 BM |
274 | case Opt_rgrplvb: |
275 | args->ar_rgrplvb = 1; | |
276 | break; | |
277 | case Opt_norgrplvb: | |
278 | args->ar_rgrplvb = 0; | |
279 | break; | |
9e6e0a12 SW |
280 | case Opt_error: |
281 | default: | |
f55073ff | 282 | printk(KERN_WARNING "GFS2: invalid mount option: %s\n", o); |
9e6e0a12 SW |
283 | return -EINVAL; |
284 | } | |
285 | } | |
286 | ||
287 | return 0; | |
288 | } | |
b3b94faa | 289 | |
fefc03bf SW |
290 | /** |
291 | * gfs2_jindex_free - Clear all the journal index information | |
292 | * @sdp: The GFS2 superblock | |
293 | * | |
294 | */ | |
295 | ||
296 | void gfs2_jindex_free(struct gfs2_sbd *sdp) | |
297 | { | |
298 | struct list_head list, *head; | |
299 | struct gfs2_jdesc *jd; | |
300 | struct gfs2_journal_extent *jext; | |
301 | ||
302 | spin_lock(&sdp->sd_jindex_spin); | |
303 | list_add(&list, &sdp->sd_jindex_list); | |
304 | list_del_init(&sdp->sd_jindex_list); | |
305 | sdp->sd_journals = 0; | |
306 | spin_unlock(&sdp->sd_jindex_spin); | |
307 | ||
308 | while (!list_empty(&list)) { | |
309 | jd = list_entry(list.next, struct gfs2_jdesc, jd_list); | |
310 | head = &jd->extent_list; | |
311 | while (!list_empty(head)) { | |
312 | jext = list_entry(head->next, | |
313 | struct gfs2_journal_extent, | |
314 | extent_list); | |
315 | list_del(&jext->extent_list); | |
316 | kfree(jext); | |
317 | } | |
318 | list_del(&jd->jd_list); | |
319 | iput(jd->jd_inode); | |
320 | kfree(jd); | |
321 | } | |
322 | } | |
323 | ||
b3b94faa DT |
324 | static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) |
325 | { | |
326 | struct gfs2_jdesc *jd; | |
327 | int found = 0; | |
328 | ||
329 | list_for_each_entry(jd, head, jd_list) { | |
330 | if (jd->jd_jid == jid) { | |
331 | found = 1; | |
332 | break; | |
333 | } | |
334 | } | |
335 | ||
336 | if (!found) | |
337 | jd = NULL; | |
338 | ||
339 | return jd; | |
340 | } | |
341 | ||
342 | struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) | |
343 | { | |
344 | struct gfs2_jdesc *jd; | |
345 | ||
346 | spin_lock(&sdp->sd_jindex_spin); | |
347 | jd = jdesc_find_i(&sdp->sd_jindex_list, jid); | |
348 | spin_unlock(&sdp->sd_jindex_spin); | |
349 | ||
350 | return jd; | |
351 | } | |
352 | ||
b3b94faa DT |
353 | int gfs2_jdesc_check(struct gfs2_jdesc *jd) |
354 | { | |
feaa7bba SW |
355 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
356 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
a2e0f799 | 357 | u64 size = i_size_read(jd->jd_inode); |
b3b94faa | 358 | |
a2e0f799 | 359 | if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) |
b3b94faa | 360 | return -EIO; |
b3b94faa | 361 | |
a2e0f799 SW |
362 | jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; |
363 | ||
364 | if (gfs2_write_alloc_required(ip, 0, size)) { | |
b3b94faa | 365 | gfs2_consist_inode(ip); |
461cb419 | 366 | return -EIO; |
b3b94faa DT |
367 | } |
368 | ||
461cb419 | 369 | return 0; |
b3b94faa DT |
370 | } |
371 | ||
8ad151c2 SW |
372 | static int init_threads(struct gfs2_sbd *sdp) |
373 | { | |
374 | struct task_struct *p; | |
375 | int error = 0; | |
376 | ||
377 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
378 | if (IS_ERR(p)) { | |
379 | error = PTR_ERR(p); | |
380 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
381 | return error; | |
382 | } | |
383 | sdp->sd_logd_process = p; | |
384 | ||
385 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
386 | if (IS_ERR(p)) { | |
387 | error = PTR_ERR(p); | |
388 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
389 | goto fail; | |
390 | } | |
391 | sdp->sd_quotad_process = p; | |
392 | return 0; | |
393 | ||
394 | fail: | |
395 | kthread_stop(sdp->sd_logd_process); | |
396 | return error; | |
397 | } | |
398 | ||
b3b94faa DT |
399 | /** |
400 | * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one | |
401 | * @sdp: the filesystem | |
402 | * | |
403 | * Returns: errno | |
404 | */ | |
405 | ||
406 | int gfs2_make_fs_rw(struct gfs2_sbd *sdp) | |
407 | { | |
feaa7bba | 408 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 409 | struct gfs2_glock *j_gl = ip->i_gl; |
b3b94faa | 410 | struct gfs2_holder t_gh; |
55167622 | 411 | struct gfs2_log_header_host head; |
b3b94faa DT |
412 | int error; |
413 | ||
8ad151c2 | 414 | error = init_threads(sdp); |
b3b94faa DT |
415 | if (error) |
416 | return error; | |
417 | ||
8ad151c2 SW |
418 | error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); |
419 | if (error) | |
420 | goto fail_threads; | |
421 | ||
1a14d3a6 | 422 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
423 | |
424 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
425 | if (error) | |
426 | goto fail; | |
427 | ||
428 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
429 | gfs2_consist(sdp); | |
430 | error = -EIO; | |
431 | goto fail; | |
432 | } | |
433 | ||
434 | /* Initialize some head of the log stuff */ | |
435 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
436 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
437 | ||
b3b94faa DT |
438 | error = gfs2_quota_init(sdp); |
439 | if (error) | |
a91ea69f | 440 | goto fail; |
b3b94faa DT |
441 | |
442 | set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); | |
443 | ||
444 | gfs2_glock_dq_uninit(&t_gh); | |
445 | ||
446 | return 0; | |
447 | ||
a91ea69f | 448 | fail: |
b3b94faa DT |
449 | t_gh.gh_flags |= GL_NOCACHE; |
450 | gfs2_glock_dq_uninit(&t_gh); | |
8ad151c2 SW |
451 | fail_threads: |
452 | kthread_stop(sdp->sd_quotad_process); | |
453 | kthread_stop(sdp->sd_logd_process); | |
b3b94faa DT |
454 | return error; |
455 | } | |
456 | ||
1946f70a | 457 | void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) |
bb8d8a6f SW |
458 | { |
459 | const struct gfs2_statfs_change *str = buf; | |
460 | ||
461 | sc->sc_total = be64_to_cpu(str->sc_total); | |
462 | sc->sc_free = be64_to_cpu(str->sc_free); | |
463 | sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); | |
464 | } | |
465 | ||
466 | static void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) | |
467 | { | |
468 | struct gfs2_statfs_change *str = buf; | |
469 | ||
470 | str->sc_total = cpu_to_be64(sc->sc_total); | |
471 | str->sc_free = cpu_to_be64(sc->sc_free); | |
472 | str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); | |
473 | } | |
474 | ||
b3b94faa DT |
475 | int gfs2_statfs_init(struct gfs2_sbd *sdp) |
476 | { | |
feaa7bba | 477 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
bd209cc0 | 478 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
feaa7bba | 479 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 480 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
b3b94faa DT |
481 | struct buffer_head *m_bh, *l_bh; |
482 | struct gfs2_holder gh; | |
483 | int error; | |
484 | ||
485 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
486 | &gh); | |
487 | if (error) | |
488 | return error; | |
489 | ||
490 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
491 | if (error) | |
492 | goto out; | |
493 | ||
494 | if (sdp->sd_args.ar_spectator) { | |
495 | spin_lock(&sdp->sd_statfs_spin); | |
496 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
497 | sizeof(struct gfs2_dinode)); | |
498 | spin_unlock(&sdp->sd_statfs_spin); | |
499 | } else { | |
500 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
501 | if (error) | |
502 | goto out_m_bh; | |
503 | ||
504 | spin_lock(&sdp->sd_statfs_spin); | |
505 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
506 | sizeof(struct gfs2_dinode)); | |
507 | gfs2_statfs_change_in(l_sc, l_bh->b_data + | |
508 | sizeof(struct gfs2_dinode)); | |
509 | spin_unlock(&sdp->sd_statfs_spin); | |
510 | ||
511 | brelse(l_bh); | |
512 | } | |
513 | ||
a91ea69f | 514 | out_m_bh: |
b3b94faa | 515 | brelse(m_bh); |
a91ea69f | 516 | out: |
b3b94faa | 517 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
518 | return 0; |
519 | } | |
520 | ||
cd915493 SW |
521 | void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, |
522 | s64 dinodes) | |
b3b94faa | 523 | { |
feaa7bba | 524 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 525 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
3d3c10f2 | 526 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
b3b94faa | 527 | struct buffer_head *l_bh; |
c14f5735 BM |
528 | s64 x, y; |
529 | int need_sync = 0; | |
b3b94faa DT |
530 | int error; |
531 | ||
532 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
533 | if (error) | |
534 | return; | |
535 | ||
350a9b0a | 536 | gfs2_trans_add_meta(l_ip->i_gl, l_bh); |
b3b94faa DT |
537 | |
538 | spin_lock(&sdp->sd_statfs_spin); | |
539 | l_sc->sc_total += total; | |
540 | l_sc->sc_free += free; | |
541 | l_sc->sc_dinodes += dinodes; | |
907b9bce | 542 | gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); |
c14f5735 BM |
543 | if (sdp->sd_args.ar_statfs_percent) { |
544 | x = 100 * l_sc->sc_free; | |
545 | y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; | |
546 | if (x >= y || x <= -y) | |
547 | need_sync = 1; | |
548 | } | |
b3b94faa DT |
549 | spin_unlock(&sdp->sd_statfs_spin); |
550 | ||
551 | brelse(l_bh); | |
c14f5735 | 552 | if (need_sync) |
3d3c10f2 | 553 | gfs2_wake_up_statfs(sdp); |
b3b94faa DT |
554 | } |
555 | ||
1946f70a BM |
556 | void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, |
557 | struct buffer_head *l_bh) | |
558 | { | |
559 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); | |
560 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
561 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
562 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
563 | ||
350a9b0a | 564 | gfs2_trans_add_meta(l_ip->i_gl, l_bh); |
1946f70a BM |
565 | |
566 | spin_lock(&sdp->sd_statfs_spin); | |
567 | m_sc->sc_total += l_sc->sc_total; | |
568 | m_sc->sc_free += l_sc->sc_free; | |
569 | m_sc->sc_dinodes += l_sc->sc_dinodes; | |
570 | memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); | |
571 | memset(l_bh->b_data + sizeof(struct gfs2_dinode), | |
572 | 0, sizeof(struct gfs2_statfs_change)); | |
573 | spin_unlock(&sdp->sd_statfs_spin); | |
574 | ||
350a9b0a | 575 | gfs2_trans_add_meta(m_ip->i_gl, m_bh); |
1946f70a BM |
576 | gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); |
577 | } | |
578 | ||
8c42d637 | 579 | int gfs2_statfs_sync(struct super_block *sb, int type) |
b3b94faa | 580 | { |
8c42d637 | 581 | struct gfs2_sbd *sdp = sb->s_fs_info; |
feaa7bba SW |
582 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
583 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
bd209cc0 AV |
584 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
585 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
b3b94faa DT |
586 | struct gfs2_holder gh; |
587 | struct buffer_head *m_bh, *l_bh; | |
588 | int error; | |
589 | ||
590 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
591 | &gh); | |
592 | if (error) | |
593 | return error; | |
594 | ||
595 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
596 | if (error) | |
597 | goto out; | |
598 | ||
599 | spin_lock(&sdp->sd_statfs_spin); | |
600 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
907b9bce | 601 | sizeof(struct gfs2_dinode)); |
b3b94faa DT |
602 | if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { |
603 | spin_unlock(&sdp->sd_statfs_spin); | |
604 | goto out_bh; | |
605 | } | |
606 | spin_unlock(&sdp->sd_statfs_spin); | |
607 | ||
608 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
609 | if (error) | |
610 | goto out_bh; | |
611 | ||
612 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); | |
613 | if (error) | |
614 | goto out_bh2; | |
615 | ||
1946f70a | 616 | update_statfs(sdp, m_bh, l_bh); |
3d3c10f2 | 617 | sdp->sd_statfs_force_sync = 0; |
b3b94faa DT |
618 | |
619 | gfs2_trans_end(sdp); | |
620 | ||
a91ea69f | 621 | out_bh2: |
b3b94faa | 622 | brelse(l_bh); |
a91ea69f | 623 | out_bh: |
b3b94faa | 624 | brelse(m_bh); |
a91ea69f | 625 | out: |
b3b94faa | 626 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
627 | return error; |
628 | } | |
629 | ||
b3b94faa DT |
630 | struct lfcc { |
631 | struct list_head list; | |
632 | struct gfs2_holder gh; | |
633 | }; | |
634 | ||
635 | /** | |
636 | * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all | |
637 | * journals are clean | |
638 | * @sdp: the file system | |
639 | * @state: the state to put the transaction lock into | |
640 | * @t_gh: the hold on the transaction lock | |
641 | * | |
642 | * Returns: errno | |
643 | */ | |
644 | ||
08bc2dbc AB |
645 | static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, |
646 | struct gfs2_holder *t_gh) | |
b3b94faa | 647 | { |
5c676f6d | 648 | struct gfs2_inode *ip; |
b3b94faa DT |
649 | struct gfs2_jdesc *jd; |
650 | struct lfcc *lfcc; | |
651 | LIST_HEAD(list); | |
55167622 | 652 | struct gfs2_log_header_host lh; |
b3b94faa DT |
653 | int error; |
654 | ||
b3b94faa DT |
655 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
656 | lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); | |
657 | if (!lfcc) { | |
658 | error = -ENOMEM; | |
659 | goto out; | |
660 | } | |
feaa7bba SW |
661 | ip = GFS2_I(jd->jd_inode); |
662 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); | |
b3b94faa DT |
663 | if (error) { |
664 | kfree(lfcc); | |
665 | goto out; | |
666 | } | |
667 | list_add(&lfcc->list, &list); | |
668 | } | |
669 | ||
670 | error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, | |
6802e340 | 671 | GL_NOCACHE, t_gh); |
b3b94faa DT |
672 | |
673 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
674 | error = gfs2_jdesc_check(jd); | |
675 | if (error) | |
676 | break; | |
677 | error = gfs2_find_jhead(jd, &lh); | |
678 | if (error) | |
679 | break; | |
680 | if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
681 | error = -EBUSY; | |
682 | break; | |
683 | } | |
684 | } | |
685 | ||
686 | if (error) | |
687 | gfs2_glock_dq_uninit(t_gh); | |
688 | ||
a91ea69f | 689 | out: |
b3b94faa DT |
690 | while (!list_empty(&list)) { |
691 | lfcc = list_entry(list.next, struct lfcc, list); | |
692 | list_del(&lfcc->list); | |
693 | gfs2_glock_dq_uninit(&lfcc->gh); | |
694 | kfree(lfcc); | |
695 | } | |
b3b94faa DT |
696 | return error; |
697 | } | |
698 | ||
9eed04cd SW |
699 | void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) |
700 | { | |
701 | struct gfs2_dinode *str = buf; | |
702 | ||
703 | str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
704 | str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); | |
705 | str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); | |
706 | str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); | |
707 | str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); | |
708 | str->di_mode = cpu_to_be32(ip->i_inode.i_mode); | |
d0546426 EB |
709 | str->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode)); |
710 | str->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode)); | |
9eed04cd SW |
711 | str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); |
712 | str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); | |
713 | str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); | |
714 | str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); | |
715 | str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); | |
716 | str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); | |
717 | ||
718 | str->di_goal_meta = cpu_to_be64(ip->i_goal); | |
719 | str->di_goal_data = cpu_to_be64(ip->i_goal); | |
720 | str->di_generation = cpu_to_be64(ip->i_generation); | |
721 | ||
722 | str->di_flags = cpu_to_be32(ip->i_diskflags); | |
723 | str->di_height = cpu_to_be16(ip->i_height); | |
724 | str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && | |
725 | !(ip->i_diskflags & GFS2_DIF_EXHASH) ? | |
726 | GFS2_FORMAT_DE : 0); | |
727 | str->di_depth = cpu_to_be16(ip->i_depth); | |
728 | str->di_entries = cpu_to_be32(ip->i_entries); | |
729 | ||
730 | str->di_eattr = cpu_to_be64(ip->i_eattr); | |
731 | str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); | |
732 | str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); | |
733 | str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); | |
734 | } | |
9e6e0a12 SW |
735 | |
736 | /** | |
737 | * gfs2_write_inode - Make sure the inode is stable on the disk | |
738 | * @inode: The inode | |
1027efaa | 739 | * @wbc: The writeback control structure |
9e6e0a12 SW |
740 | * |
741 | * Returns: errno | |
742 | */ | |
743 | ||
a9185b41 | 744 | static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) |
9e6e0a12 SW |
745 | { |
746 | struct gfs2_inode *ip = GFS2_I(inode); | |
747 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
1027efaa | 748 | struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); |
4667a0ec | 749 | struct backing_dev_info *bdi = metamapping->backing_dev_info; |
ab9bbda0 SW |
750 | int ret = 0; |
751 | ||
a9185b41 | 752 | if (wbc->sync_mode == WB_SYNC_ALL) |
9e6e0a12 | 753 | gfs2_log_flush(GFS2_SB(inode), ip->i_gl); |
4667a0ec SW |
754 | if (bdi->dirty_exceeded) |
755 | gfs2_ail1_flush(sdp, wbc); | |
1d4ec642 SW |
756 | else |
757 | filemap_fdatawrite(metamapping); | |
ab9bbda0 | 758 | if (wbc->sync_mode == WB_SYNC_ALL) |
1027efaa SW |
759 | ret = filemap_fdatawait(metamapping); |
760 | if (ret) | |
761 | mark_inode_dirty_sync(inode); | |
9e6e0a12 SW |
762 | return ret; |
763 | } | |
764 | ||
ab9bbda0 SW |
765 | /** |
766 | * gfs2_dirty_inode - check for atime updates | |
767 | * @inode: The inode in question | |
768 | * @flags: The type of dirty | |
769 | * | |
770 | * Unfortunately it can be called under any combination of inode | |
771 | * glock and transaction lock, so we have to check carefully. | |
772 | * | |
773 | * At the moment this deals only with atime - it should be possible | |
774 | * to expand that role in future, once a review of the locking has | |
775 | * been carried out. | |
776 | */ | |
777 | ||
778 | static void gfs2_dirty_inode(struct inode *inode, int flags) | |
779 | { | |
780 | struct gfs2_inode *ip = GFS2_I(inode); | |
781 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
782 | struct buffer_head *bh; | |
783 | struct gfs2_holder gh; | |
784 | int need_unlock = 0; | |
785 | int need_endtrans = 0; | |
786 | int ret; | |
787 | ||
788 | if (!(flags & (I_DIRTY_DATASYNC|I_DIRTY_SYNC))) | |
789 | return; | |
790 | ||
791 | if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { | |
792 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); | |
793 | if (ret) { | |
794 | fs_err(sdp, "dirty_inode: glock %d\n", ret); | |
795 | return; | |
796 | } | |
797 | need_unlock = 1; | |
3d162688 BM |
798 | } else if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) |
799 | return; | |
ab9bbda0 SW |
800 | |
801 | if (current->journal_info == NULL) { | |
802 | ret = gfs2_trans_begin(sdp, RES_DINODE, 0); | |
803 | if (ret) { | |
804 | fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); | |
805 | goto out; | |
806 | } | |
807 | need_endtrans = 1; | |
808 | } | |
809 | ||
810 | ret = gfs2_meta_inode_buffer(ip, &bh); | |
811 | if (ret == 0) { | |
350a9b0a | 812 | gfs2_trans_add_meta(ip->i_gl, bh); |
ab9bbda0 SW |
813 | gfs2_dinode_out(ip, bh->b_data); |
814 | brelse(bh); | |
815 | } | |
816 | ||
817 | if (need_endtrans) | |
818 | gfs2_trans_end(sdp); | |
819 | out: | |
820 | if (need_unlock) | |
821 | gfs2_glock_dq_uninit(&gh); | |
822 | } | |
823 | ||
9e6e0a12 SW |
824 | /** |
825 | * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one | |
826 | * @sdp: the filesystem | |
827 | * | |
828 | * Returns: errno | |
829 | */ | |
830 | ||
831 | static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) | |
832 | { | |
833 | struct gfs2_holder t_gh; | |
834 | int error; | |
835 | ||
8ad151c2 SW |
836 | kthread_stop(sdp->sd_quotad_process); |
837 | kthread_stop(sdp->sd_logd_process); | |
838 | ||
b94a170e | 839 | flush_workqueue(gfs2_delete_workqueue); |
ceed1723 | 840 | gfs2_quota_sync(sdp->sd_vfs, 0); |
8c42d637 | 841 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
9e6e0a12 SW |
842 | |
843 | error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE, | |
844 | &t_gh); | |
845 | if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
846 | return error; | |
847 | ||
848 | gfs2_meta_syncfs(sdp); | |
849 | gfs2_log_shutdown(sdp); | |
850 | ||
851 | clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); | |
852 | ||
853 | if (t_gh.gh_gl) | |
854 | gfs2_glock_dq_uninit(&t_gh); | |
855 | ||
856 | gfs2_quota_cleanup(sdp); | |
857 | ||
858 | return error; | |
859 | } | |
860 | ||
861 | static int gfs2_umount_recovery_wait(void *word) | |
862 | { | |
863 | schedule(); | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /** | |
868 | * gfs2_put_super - Unmount the filesystem | |
869 | * @sb: The VFS superblock | |
870 | * | |
871 | */ | |
872 | ||
873 | static void gfs2_put_super(struct super_block *sb) | |
874 | { | |
875 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
876 | int error; | |
877 | struct gfs2_jdesc *jd; | |
878 | ||
9e6e0a12 SW |
879 | /* No more recovery requests */ |
880 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); | |
881 | smp_mb(); | |
882 | ||
883 | /* Wait on outstanding recovery */ | |
884 | restart: | |
885 | spin_lock(&sdp->sd_jindex_spin); | |
886 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
887 | if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) | |
888 | continue; | |
889 | spin_unlock(&sdp->sd_jindex_spin); | |
890 | wait_on_bit(&jd->jd_flags, JDF_RECOVERY, | |
891 | gfs2_umount_recovery_wait, TASK_UNINTERRUPTIBLE); | |
892 | goto restart; | |
893 | } | |
894 | spin_unlock(&sdp->sd_jindex_spin); | |
895 | ||
9e6e0a12 SW |
896 | if (!(sb->s_flags & MS_RDONLY)) { |
897 | error = gfs2_make_fs_ro(sdp); | |
898 | if (error) | |
899 | gfs2_io_error(sdp); | |
900 | } | |
901 | /* At this point, we're through modifying the disk */ | |
902 | ||
903 | /* Release stuff */ | |
904 | ||
905 | iput(sdp->sd_jindex); | |
9e6e0a12 SW |
906 | iput(sdp->sd_statfs_inode); |
907 | iput(sdp->sd_rindex); | |
908 | iput(sdp->sd_quota_inode); | |
909 | ||
910 | gfs2_glock_put(sdp->sd_rename_gl); | |
911 | gfs2_glock_put(sdp->sd_trans_gl); | |
912 | ||
913 | if (!sdp->sd_args.ar_spectator) { | |
914 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
915 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
9e6e0a12 SW |
916 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
917 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
9e6e0a12 SW |
918 | iput(sdp->sd_sc_inode); |
919 | iput(sdp->sd_qc_inode); | |
920 | } | |
921 | ||
922 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
923 | gfs2_clear_rgrpd(sdp); | |
924 | gfs2_jindex_free(sdp); | |
925 | /* Take apart glock structures and buffer lists */ | |
926 | gfs2_gl_hash_clear(sdp); | |
927 | /* Unmount the locking protocol */ | |
928 | gfs2_lm_unmount(sdp); | |
929 | ||
930 | /* At this point, we're through participating in the lockspace */ | |
931 | gfs2_sys_fs_del(sdp); | |
932 | } | |
933 | ||
9e6e0a12 SW |
934 | /** |
935 | * gfs2_sync_fs - sync the filesystem | |
936 | * @sb: the superblock | |
937 | * | |
938 | * Flushes the log to disk. | |
939 | */ | |
940 | ||
941 | static int gfs2_sync_fs(struct super_block *sb, int wait) | |
942 | { | |
1027efaa | 943 | struct gfs2_sbd *sdp = sb->s_fs_info; |
a1177825 JK |
944 | |
945 | gfs2_quota_sync(sb, -1); | |
1027efaa SW |
946 | if (wait && sdp) |
947 | gfs2_log_flush(sdp, NULL); | |
9e6e0a12 SW |
948 | return 0; |
949 | } | |
950 | ||
951 | /** | |
952 | * gfs2_freeze - prevent further writes to the filesystem | |
953 | * @sb: the VFS structure for the filesystem | |
954 | * | |
955 | */ | |
956 | ||
957 | static int gfs2_freeze(struct super_block *sb) | |
958 | { | |
959 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
960 | int error; | |
961 | ||
962 | if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
963 | return -EINVAL; | |
964 | ||
965 | for (;;) { | |
d564053f | 966 | error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh); |
9e6e0a12 SW |
967 | if (!error) |
968 | break; | |
969 | ||
970 | switch (error) { | |
971 | case -EBUSY: | |
972 | fs_err(sdp, "waiting for recovery before freeze\n"); | |
973 | break; | |
974 | ||
975 | default: | |
976 | fs_err(sdp, "error freezing FS: %d\n", error); | |
977 | break; | |
978 | } | |
979 | ||
980 | fs_err(sdp, "retrying...\n"); | |
981 | msleep(1000); | |
982 | } | |
983 | return 0; | |
984 | } | |
985 | ||
986 | /** | |
987 | * gfs2_unfreeze - reallow writes to the filesystem | |
988 | * @sb: the VFS structure for the filesystem | |
989 | * | |
990 | */ | |
991 | ||
992 | static int gfs2_unfreeze(struct super_block *sb) | |
993 | { | |
d564053f SW |
994 | struct gfs2_sbd *sdp = sb->s_fs_info; |
995 | ||
996 | gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); | |
9e6e0a12 SW |
997 | return 0; |
998 | } | |
999 | ||
1000 | /** | |
1001 | * statfs_fill - fill in the sg for a given RG | |
1002 | * @rgd: the RG | |
1003 | * @sc: the sc structure | |
1004 | * | |
1005 | * Returns: 0 on success, -ESTALE if the LVB is invalid | |
1006 | */ | |
1007 | ||
1008 | static int statfs_slow_fill(struct gfs2_rgrpd *rgd, | |
1009 | struct gfs2_statfs_change_host *sc) | |
1010 | { | |
1011 | gfs2_rgrp_verify(rgd); | |
1012 | sc->sc_total += rgd->rd_data; | |
1013 | sc->sc_free += rgd->rd_free; | |
1014 | sc->sc_dinodes += rgd->rd_dinodes; | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | /** | |
1019 | * gfs2_statfs_slow - Stat a filesystem using asynchronous locking | |
1020 | * @sdp: the filesystem | |
1021 | * @sc: the sc info that will be returned | |
1022 | * | |
1023 | * Any error (other than a signal) will cause this routine to fall back | |
1024 | * to the synchronous version. | |
1025 | * | |
1026 | * FIXME: This really shouldn't busy wait like this. | |
1027 | * | |
1028 | * Returns: errno | |
1029 | */ | |
1030 | ||
1031 | static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
1032 | { | |
9e6e0a12 SW |
1033 | struct gfs2_rgrpd *rgd_next; |
1034 | struct gfs2_holder *gha, *gh; | |
1035 | unsigned int slots = 64; | |
1036 | unsigned int x; | |
1037 | int done; | |
1038 | int error = 0, err; | |
1039 | ||
1040 | memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); | |
1041 | gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); | |
1042 | if (!gha) | |
1043 | return -ENOMEM; | |
1044 | ||
9e6e0a12 SW |
1045 | rgd_next = gfs2_rgrpd_get_first(sdp); |
1046 | ||
1047 | for (;;) { | |
1048 | done = 1; | |
1049 | ||
1050 | for (x = 0; x < slots; x++) { | |
1051 | gh = gha + x; | |
1052 | ||
1053 | if (gh->gh_gl && gfs2_glock_poll(gh)) { | |
1054 | err = gfs2_glock_wait(gh); | |
1055 | if (err) { | |
1056 | gfs2_holder_uninit(gh); | |
1057 | error = err; | |
1058 | } else { | |
1059 | if (!error) | |
1060 | error = statfs_slow_fill( | |
1061 | gh->gh_gl->gl_object, sc); | |
1062 | gfs2_glock_dq_uninit(gh); | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | if (gh->gh_gl) | |
1067 | done = 0; | |
1068 | else if (rgd_next && !error) { | |
1069 | error = gfs2_glock_nq_init(rgd_next->rd_gl, | |
1070 | LM_ST_SHARED, | |
1071 | GL_ASYNC, | |
1072 | gh); | |
1073 | rgd_next = gfs2_rgrpd_get_next(rgd_next); | |
1074 | done = 0; | |
1075 | } | |
1076 | ||
1077 | if (signal_pending(current)) | |
1078 | error = -ERESTARTSYS; | |
1079 | } | |
1080 | ||
1081 | if (done) | |
1082 | break; | |
1083 | ||
1084 | yield(); | |
1085 | } | |
1086 | ||
9e6e0a12 SW |
1087 | kfree(gha); |
1088 | return error; | |
1089 | } | |
1090 | ||
1091 | /** | |
1092 | * gfs2_statfs_i - Do a statfs | |
1093 | * @sdp: the filesystem | |
1094 | * @sg: the sg structure | |
1095 | * | |
1096 | * Returns: errno | |
1097 | */ | |
1098 | ||
1099 | static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
1100 | { | |
1101 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
1102 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
1103 | ||
1104 | spin_lock(&sdp->sd_statfs_spin); | |
1105 | ||
1106 | *sc = *m_sc; | |
1107 | sc->sc_total += l_sc->sc_total; | |
1108 | sc->sc_free += l_sc->sc_free; | |
1109 | sc->sc_dinodes += l_sc->sc_dinodes; | |
1110 | ||
1111 | spin_unlock(&sdp->sd_statfs_spin); | |
1112 | ||
1113 | if (sc->sc_free < 0) | |
1114 | sc->sc_free = 0; | |
1115 | if (sc->sc_free > sc->sc_total) | |
1116 | sc->sc_free = sc->sc_total; | |
1117 | if (sc->sc_dinodes < 0) | |
1118 | sc->sc_dinodes = 0; | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | /** | |
1124 | * gfs2_statfs - Gather and return stats about the filesystem | |
1125 | * @sb: The superblock | |
1126 | * @statfsbuf: The buffer | |
1127 | * | |
1128 | * Returns: 0 on success or error code | |
1129 | */ | |
1130 | ||
1131 | static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) | |
1132 | { | |
1133 | struct super_block *sb = dentry->d_inode->i_sb; | |
1134 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1135 | struct gfs2_statfs_change_host sc; | |
1136 | int error; | |
1137 | ||
8339ee54 SW |
1138 | error = gfs2_rindex_update(sdp); |
1139 | if (error) | |
1140 | return error; | |
1141 | ||
9e6e0a12 SW |
1142 | if (gfs2_tune_get(sdp, gt_statfs_slow)) |
1143 | error = gfs2_statfs_slow(sdp, &sc); | |
1144 | else | |
1145 | error = gfs2_statfs_i(sdp, &sc); | |
1146 | ||
1147 | if (error) | |
1148 | return error; | |
1149 | ||
1150 | buf->f_type = GFS2_MAGIC; | |
1151 | buf->f_bsize = sdp->sd_sb.sb_bsize; | |
1152 | buf->f_blocks = sc.sc_total; | |
1153 | buf->f_bfree = sc.sc_free; | |
1154 | buf->f_bavail = sc.sc_free; | |
1155 | buf->f_files = sc.sc_dinodes + sc.sc_free; | |
1156 | buf->f_ffree = sc.sc_free; | |
1157 | buf->f_namelen = GFS2_FNAMESIZE; | |
1158 | ||
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | /** | |
1163 | * gfs2_remount_fs - called when the FS is remounted | |
1164 | * @sb: the filesystem | |
1165 | * @flags: the remount flags | |
1166 | * @data: extra data passed in (not used right now) | |
1167 | * | |
1168 | * Returns: errno | |
1169 | */ | |
1170 | ||
1171 | static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) | |
1172 | { | |
1173 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1174 | struct gfs2_args args = sdp->sd_args; /* Default to current settings */ | |
1175 | struct gfs2_tune *gt = &sdp->sd_tune; | |
1176 | int error; | |
1177 | ||
1178 | spin_lock(>->gt_spin); | |
5e687eac | 1179 | args.ar_commit = gt->gt_logd_secs; |
3d3c10f2 BM |
1180 | args.ar_quota_quantum = gt->gt_quota_quantum; |
1181 | if (gt->gt_statfs_slow) | |
1182 | args.ar_statfs_quantum = 0; | |
1183 | else | |
1184 | args.ar_statfs_quantum = gt->gt_statfs_quantum; | |
9e6e0a12 | 1185 | spin_unlock(>->gt_spin); |
f55073ff | 1186 | error = gfs2_mount_args(&args, data); |
9e6e0a12 SW |
1187 | if (error) |
1188 | return error; | |
1189 | ||
1190 | /* Not allowed to change locking details */ | |
1191 | if (strcmp(args.ar_lockproto, sdp->sd_args.ar_lockproto) || | |
1192 | strcmp(args.ar_locktable, sdp->sd_args.ar_locktable) || | |
1193 | strcmp(args.ar_hostdata, sdp->sd_args.ar_hostdata)) | |
1194 | return -EINVAL; | |
1195 | ||
1196 | /* Some flags must not be changed */ | |
1197 | if (args_neq(&args, &sdp->sd_args, spectator) || | |
9e6e0a12 | 1198 | args_neq(&args, &sdp->sd_args, localflocks) || |
9e6e0a12 SW |
1199 | args_neq(&args, &sdp->sd_args, meta)) |
1200 | return -EINVAL; | |
1201 | ||
1202 | if (sdp->sd_args.ar_spectator) | |
1203 | *flags |= MS_RDONLY; | |
1204 | ||
1205 | if ((sb->s_flags ^ *flags) & MS_RDONLY) { | |
1206 | if (*flags & MS_RDONLY) | |
1207 | error = gfs2_make_fs_ro(sdp); | |
1208 | else | |
1209 | error = gfs2_make_fs_rw(sdp); | |
1210 | if (error) | |
1211 | return error; | |
1212 | } | |
1213 | ||
1214 | sdp->sd_args = args; | |
1215 | if (sdp->sd_args.ar_posix_acl) | |
1216 | sb->s_flags |= MS_POSIXACL; | |
1217 | else | |
1218 | sb->s_flags &= ~MS_POSIXACL; | |
f25934c5 CH |
1219 | if (sdp->sd_args.ar_nobarrier) |
1220 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
1221 | else | |
1222 | clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
9e6e0a12 | 1223 | spin_lock(>->gt_spin); |
5e687eac | 1224 | gt->gt_logd_secs = args.ar_commit; |
3d3c10f2 BM |
1225 | gt->gt_quota_quantum = args.ar_quota_quantum; |
1226 | if (args.ar_statfs_quantum) { | |
1227 | gt->gt_statfs_slow = 0; | |
1228 | gt->gt_statfs_quantum = args.ar_statfs_quantum; | |
1229 | } | |
1230 | else { | |
1231 | gt->gt_statfs_slow = 1; | |
1232 | gt->gt_statfs_quantum = 30; | |
1233 | } | |
9e6e0a12 SW |
1234 | spin_unlock(>->gt_spin); |
1235 | ||
8633ecfa | 1236 | gfs2_online_uevent(sdp); |
9e6e0a12 SW |
1237 | return 0; |
1238 | } | |
1239 | ||
1240 | /** | |
1241 | * gfs2_drop_inode - Drop an inode (test for remote unlink) | |
1242 | * @inode: The inode to drop | |
1243 | * | |
1244 | * If we've received a callback on an iopen lock then its because a | |
1245 | * remote node tried to deallocate the inode but failed due to this node | |
1246 | * still having the inode open. Here we mark the link count zero | |
1247 | * since we know that it must have reached zero if the GLF_DEMOTE flag | |
1248 | * is set on the iopen glock. If we didn't do a disk read since the | |
1249 | * remote node removed the final link then we might otherwise miss | |
1250 | * this event. This check ensures that this node will deallocate the | |
1251 | * inode's blocks, or alternatively pass the baton on to another | |
1252 | * node for later deallocation. | |
1253 | */ | |
1254 | ||
45321ac5 | 1255 | static int gfs2_drop_inode(struct inode *inode) |
9e6e0a12 SW |
1256 | { |
1257 | struct gfs2_inode *ip = GFS2_I(inode); | |
1258 | ||
009d8518 | 1259 | if (inode->i_nlink) { |
9e6e0a12 SW |
1260 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
1261 | if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) | |
1262 | clear_nlink(inode); | |
1263 | } | |
45321ac5 | 1264 | return generic_drop_inode(inode); |
9e6e0a12 SW |
1265 | } |
1266 | ||
1267 | static int is_ancestor(const struct dentry *d1, const struct dentry *d2) | |
1268 | { | |
1269 | do { | |
1270 | if (d1 == d2) | |
1271 | return 1; | |
1272 | d1 = d1->d_parent; | |
1273 | } while (!IS_ROOT(d1)); | |
1274 | return 0; | |
1275 | } | |
1276 | ||
1277 | /** | |
1278 | * gfs2_show_options - Show mount options for /proc/mounts | |
1279 | * @s: seq_file structure | |
34c80b1d | 1280 | * @root: root of this (sub)tree |
9e6e0a12 SW |
1281 | * |
1282 | * Returns: 0 on success or error code | |
1283 | */ | |
1284 | ||
34c80b1d | 1285 | static int gfs2_show_options(struct seq_file *s, struct dentry *root) |
9e6e0a12 | 1286 | { |
34c80b1d | 1287 | struct gfs2_sbd *sdp = root->d_sb->s_fs_info; |
9e6e0a12 | 1288 | struct gfs2_args *args = &sdp->sd_args; |
3d3c10f2 | 1289 | int val; |
9e6e0a12 | 1290 | |
34c80b1d | 1291 | if (is_ancestor(root, sdp->sd_master_dir)) |
9e6e0a12 SW |
1292 | seq_printf(s, ",meta"); |
1293 | if (args->ar_lockproto[0]) | |
1294 | seq_printf(s, ",lockproto=%s", args->ar_lockproto); | |
1295 | if (args->ar_locktable[0]) | |
1296 | seq_printf(s, ",locktable=%s", args->ar_locktable); | |
1297 | if (args->ar_hostdata[0]) | |
1298 | seq_printf(s, ",hostdata=%s", args->ar_hostdata); | |
1299 | if (args->ar_spectator) | |
1300 | seq_printf(s, ",spectator"); | |
9e6e0a12 SW |
1301 | if (args->ar_localflocks) |
1302 | seq_printf(s, ",localflocks"); | |
9e6e0a12 SW |
1303 | if (args->ar_debug) |
1304 | seq_printf(s, ",debug"); | |
9e6e0a12 SW |
1305 | if (args->ar_posix_acl) |
1306 | seq_printf(s, ",acl"); | |
1307 | if (args->ar_quota != GFS2_QUOTA_DEFAULT) { | |
1308 | char *state; | |
1309 | switch (args->ar_quota) { | |
1310 | case GFS2_QUOTA_OFF: | |
1311 | state = "off"; | |
1312 | break; | |
1313 | case GFS2_QUOTA_ACCOUNT: | |
1314 | state = "account"; | |
1315 | break; | |
1316 | case GFS2_QUOTA_ON: | |
1317 | state = "on"; | |
1318 | break; | |
1319 | default: | |
1320 | state = "unknown"; | |
1321 | break; | |
1322 | } | |
1323 | seq_printf(s, ",quota=%s", state); | |
1324 | } | |
1325 | if (args->ar_suiddir) | |
1326 | seq_printf(s, ",suiddir"); | |
1327 | if (args->ar_data != GFS2_DATA_DEFAULT) { | |
1328 | char *state; | |
1329 | switch (args->ar_data) { | |
1330 | case GFS2_DATA_WRITEBACK: | |
1331 | state = "writeback"; | |
1332 | break; | |
1333 | case GFS2_DATA_ORDERED: | |
1334 | state = "ordered"; | |
1335 | break; | |
1336 | default: | |
1337 | state = "unknown"; | |
1338 | break; | |
1339 | } | |
1340 | seq_printf(s, ",data=%s", state); | |
1341 | } | |
1342 | if (args->ar_discard) | |
1343 | seq_printf(s, ",discard"); | |
5e687eac BM |
1344 | val = sdp->sd_tune.gt_logd_secs; |
1345 | if (val != 30) | |
3d3c10f2 BM |
1346 | seq_printf(s, ",commit=%d", val); |
1347 | val = sdp->sd_tune.gt_statfs_quantum; | |
1348 | if (val != 30) | |
1349 | seq_printf(s, ",statfs_quantum=%d", val); | |
2b9731e8 SW |
1350 | else if (sdp->sd_tune.gt_statfs_slow) |
1351 | seq_puts(s, ",statfs_quantum=0"); | |
3d3c10f2 BM |
1352 | val = sdp->sd_tune.gt_quota_quantum; |
1353 | if (val != 60) | |
1354 | seq_printf(s, ",quota_quantum=%d", val); | |
1355 | if (args->ar_statfs_percent) | |
1356 | seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); | |
d34843d0 BP |
1357 | if (args->ar_errors != GFS2_ERRORS_DEFAULT) { |
1358 | const char *state; | |
1359 | ||
1360 | switch (args->ar_errors) { | |
1361 | case GFS2_ERRORS_WITHDRAW: | |
1362 | state = "withdraw"; | |
1363 | break; | |
1364 | case GFS2_ERRORS_PANIC: | |
1365 | state = "panic"; | |
1366 | break; | |
1367 | default: | |
1368 | state = "unknown"; | |
1369 | break; | |
1370 | } | |
1371 | seq_printf(s, ",errors=%s", state); | |
1372 | } | |
cdcfde62 SW |
1373 | if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) |
1374 | seq_printf(s, ",nobarrier"); | |
913a71d2 SW |
1375 | if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) |
1376 | seq_printf(s, ",demote_interface_used"); | |
90306c41 BM |
1377 | if (args->ar_rgrplvb) |
1378 | seq_printf(s, ",rgrplvb"); | |
9e6e0a12 SW |
1379 | return 0; |
1380 | } | |
1381 | ||
f42ab085 SW |
1382 | static void gfs2_final_release_pages(struct gfs2_inode *ip) |
1383 | { | |
1384 | struct inode *inode = &ip->i_inode; | |
1385 | struct gfs2_glock *gl = ip->i_gl; | |
1386 | ||
1387 | truncate_inode_pages(gfs2_glock2aspace(ip->i_gl), 0); | |
1388 | truncate_inode_pages(&inode->i_data, 0); | |
1389 | ||
1390 | if (atomic_read(&gl->gl_revokes) == 0) { | |
1391 | clear_bit(GLF_LFLUSH, &gl->gl_flags); | |
1392 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
1393 | } | |
1394 | } | |
1395 | ||
1396 | static int gfs2_dinode_dealloc(struct gfs2_inode *ip) | |
1397 | { | |
1398 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); | |
f42ab085 | 1399 | struct gfs2_rgrpd *rgd; |
564e12b1 | 1400 | struct gfs2_holder gh; |
f42ab085 SW |
1401 | int error; |
1402 | ||
1403 | if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { | |
94fb763b | 1404 | gfs2_consist_inode(ip); |
f42ab085 SW |
1405 | return -EIO; |
1406 | } | |
1407 | ||
8e2e0047 BP |
1408 | error = gfs2_rindex_update(sdp); |
1409 | if (error) | |
1410 | return error; | |
f42ab085 | 1411 | |
f4108a60 | 1412 | error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
f42ab085 | 1413 | if (error) |
5407e242 | 1414 | return error; |
f42ab085 | 1415 | |
66fc061b | 1416 | rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); |
f42ab085 SW |
1417 | if (!rgd) { |
1418 | gfs2_consist_inode(ip); | |
1419 | error = -EIO; | |
8339ee54 | 1420 | goto out_qs; |
f42ab085 SW |
1421 | } |
1422 | ||
564e12b1 | 1423 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); |
f42ab085 | 1424 | if (error) |
8339ee54 | 1425 | goto out_qs; |
f42ab085 | 1426 | |
4667a0ec SW |
1427 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, |
1428 | sdp->sd_jdesc->jd_blocks); | |
f42ab085 SW |
1429 | if (error) |
1430 | goto out_rg_gunlock; | |
1431 | ||
1432 | gfs2_free_di(rgd, ip); | |
1433 | ||
1434 | gfs2_final_release_pages(ip); | |
1435 | ||
1436 | gfs2_trans_end(sdp); | |
1437 | ||
1438 | out_rg_gunlock: | |
564e12b1 | 1439 | gfs2_glock_dq_uninit(&gh); |
f42ab085 SW |
1440 | out_qs: |
1441 | gfs2_quota_unhold(ip); | |
f42ab085 SW |
1442 | return error; |
1443 | } | |
1444 | ||
380f7c65 SW |
1445 | /** |
1446 | * gfs2_evict_inode - Remove an inode from cache | |
1447 | * @inode: The inode to evict | |
1448 | * | |
1449 | * There are three cases to consider: | |
1450 | * 1. i_nlink == 0, we are final opener (and must deallocate) | |
1451 | * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) | |
1452 | * 3. i_nlink > 0 | |
1453 | * | |
1454 | * If the fs is read only, then we have to treat all cases as per #3 | |
1455 | * since we are unable to do any deallocation. The inode will be | |
1456 | * deallocated by the next read/write node to attempt an allocation | |
1457 | * in the same resource group | |
1458 | * | |
9e6e0a12 SW |
1459 | * We have to (at the moment) hold the inodes main lock to cover |
1460 | * the gap between unlocking the shared lock on the iopen lock and | |
1461 | * taking the exclusive lock. I'd rather do a shared -> exclusive | |
1462 | * conversion on the iopen lock, but we can change that later. This | |
1463 | * is safe, just less efficient. | |
1464 | */ | |
1465 | ||
d5c1515c | 1466 | static void gfs2_evict_inode(struct inode *inode) |
9e6e0a12 | 1467 | { |
001e8e8d SW |
1468 | struct super_block *sb = inode->i_sb; |
1469 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
9e6e0a12 SW |
1470 | struct gfs2_inode *ip = GFS2_I(inode); |
1471 | struct gfs2_holder gh; | |
1472 | int error; | |
1473 | ||
001e8e8d | 1474 | if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) |
d5c1515c AV |
1475 | goto out; |
1476 | ||
44ad37d6 BP |
1477 | /* Must not read inode block until block type has been verified */ |
1478 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); | |
9e6e0a12 | 1479 | if (unlikely(error)) { |
a6a4d98b | 1480 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; |
9e6e0a12 SW |
1481 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); |
1482 | goto out; | |
1483 | } | |
1484 | ||
40ac218f SW |
1485 | if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { |
1486 | error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); | |
1487 | if (error) | |
1488 | goto out_truncate; | |
1489 | } | |
acf7e244 | 1490 | |
44ad37d6 BP |
1491 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
1492 | error = gfs2_inode_refresh(ip); | |
1493 | if (error) | |
1494 | goto out_truncate; | |
1495 | } | |
1496 | ||
23c30108 | 1497 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; |
9e6e0a12 SW |
1498 | gfs2_glock_dq_wait(&ip->i_iopen_gh); |
1499 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh); | |
1500 | error = gfs2_glock_nq(&ip->i_iopen_gh); | |
1501 | if (error) | |
1502 | goto out_truncate; | |
1503 | ||
380f7c65 SW |
1504 | /* Case 1 starts here */ |
1505 | ||
9e6e0a12 SW |
1506 | if (S_ISDIR(inode->i_mode) && |
1507 | (ip->i_diskflags & GFS2_DIF_EXHASH)) { | |
1508 | error = gfs2_dir_exhash_dealloc(ip); | |
1509 | if (error) | |
1510 | goto out_unlock; | |
1511 | } | |
1512 | ||
1513 | if (ip->i_eattr) { | |
1514 | error = gfs2_ea_dealloc(ip); | |
1515 | if (error) | |
1516 | goto out_unlock; | |
1517 | } | |
1518 | ||
1519 | if (!gfs2_is_stuffed(ip)) { | |
1520 | error = gfs2_file_dealloc(ip); | |
1521 | if (error) | |
1522 | goto out_unlock; | |
1523 | } | |
1524 | ||
1525 | error = gfs2_dinode_dealloc(ip); | |
f42ab085 | 1526 | goto out_unlock; |
9e6e0a12 SW |
1527 | |
1528 | out_truncate: | |
40ac218f | 1529 | gfs2_log_flush(sdp, ip->i_gl); |
2216db70 BM |
1530 | if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { |
1531 | struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); | |
1532 | filemap_fdatawrite(metamapping); | |
1533 | filemap_fdatawait(metamapping); | |
1534 | } | |
40ac218f | 1535 | write_inode_now(inode, 1); |
b5b24d7a | 1536 | gfs2_ail_flush(ip->i_gl, 0); |
40ac218f | 1537 | |
380f7c65 | 1538 | /* Case 2 starts here */ |
9e6e0a12 SW |
1539 | error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); |
1540 | if (error) | |
1541 | goto out_unlock; | |
380f7c65 SW |
1542 | /* Needs to be done before glock release & also in a transaction */ |
1543 | truncate_inode_pages(&inode->i_data, 0); | |
9e6e0a12 SW |
1544 | gfs2_trans_end(sdp); |
1545 | ||
1546 | out_unlock: | |
380f7c65 | 1547 | /* Error path for case 1 */ |
8e2e0047 | 1548 | if (gfs2_rs_active(ip->i_res)) |
20095218 | 1549 | gfs2_rs_deltree(ip->i_res); |
8e2e0047 | 1550 | |
a6a4d98b BP |
1551 | if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { |
1552 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; | |
9e6e0a12 | 1553 | gfs2_glock_dq(&ip->i_iopen_gh); |
a6a4d98b | 1554 | } |
9e6e0a12 SW |
1555 | gfs2_holder_uninit(&ip->i_iopen_gh); |
1556 | gfs2_glock_dq_uninit(&gh); | |
1557 | if (error && error != GLR_TRYFAILED && error != -EROFS) | |
d5c1515c | 1558 | fs_warn(sdp, "gfs2_evict_inode: %d\n", error); |
9e6e0a12 | 1559 | out: |
380f7c65 | 1560 | /* Case 3 starts here */ |
9e6e0a12 | 1561 | truncate_inode_pages(&inode->i_data, 0); |
af5c2697 | 1562 | gfs2_rs_delete(ip, NULL); |
45138990 | 1563 | gfs2_ordered_del_inode(ip); |
dbd5768f | 1564 | clear_inode(inode); |
17d539f0 | 1565 | gfs2_dir_hash_inval(ip); |
d5c1515c | 1566 | ip->i_gl->gl_object = NULL; |
43829731 | 1567 | flush_delayed_work(&ip->i_gl->gl_work); |
29687a2a | 1568 | gfs2_glock_add_to_lru(ip->i_gl); |
d5c1515c AV |
1569 | gfs2_glock_put(ip->i_gl); |
1570 | ip->i_gl = NULL; | |
1571 | if (ip->i_iopen_gh.gh_gl) { | |
1572 | ip->i_iopen_gh.gh_gl->gl_object = NULL; | |
a6a4d98b | 1573 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; |
d5c1515c AV |
1574 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); |
1575 | } | |
9e6e0a12 SW |
1576 | } |
1577 | ||
1578 | static struct inode *gfs2_alloc_inode(struct super_block *sb) | |
1579 | { | |
1580 | struct gfs2_inode *ip; | |
1581 | ||
1582 | ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); | |
1583 | if (ip) { | |
1584 | ip->i_flags = 0; | |
1585 | ip->i_gl = NULL; | |
54335b1f | 1586 | ip->i_rgd = NULL; |
0a305e49 | 1587 | ip->i_res = NULL; |
9e6e0a12 SW |
1588 | } |
1589 | return &ip->i_inode; | |
1590 | } | |
1591 | ||
fa0d7e3d | 1592 | static void gfs2_i_callback(struct rcu_head *head) |
9e6e0a12 | 1593 | { |
fa0d7e3d | 1594 | struct inode *inode = container_of(head, struct inode, i_rcu); |
9e6e0a12 SW |
1595 | kmem_cache_free(gfs2_inode_cachep, inode); |
1596 | } | |
1597 | ||
fa0d7e3d NP |
1598 | static void gfs2_destroy_inode(struct inode *inode) |
1599 | { | |
1600 | call_rcu(&inode->i_rcu, gfs2_i_callback); | |
1601 | } | |
1602 | ||
9e6e0a12 SW |
1603 | const struct super_operations gfs2_super_ops = { |
1604 | .alloc_inode = gfs2_alloc_inode, | |
1605 | .destroy_inode = gfs2_destroy_inode, | |
1606 | .write_inode = gfs2_write_inode, | |
ab9bbda0 | 1607 | .dirty_inode = gfs2_dirty_inode, |
d5c1515c | 1608 | .evict_inode = gfs2_evict_inode, |
9e6e0a12 | 1609 | .put_super = gfs2_put_super, |
9e6e0a12 SW |
1610 | .sync_fs = gfs2_sync_fs, |
1611 | .freeze_fs = gfs2_freeze, | |
1612 | .unfreeze_fs = gfs2_unfreeze, | |
1613 | .statfs = gfs2_statfs, | |
1614 | .remount_fs = gfs2_remount_fs, | |
9e6e0a12 SW |
1615 | .drop_inode = gfs2_drop_inode, |
1616 | .show_options = gfs2_show_options, | |
1617 | }; | |
1618 |