Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 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 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/kobject.h> | |
5c676f6d | 17 | #include <linux/gfs2_ondisk.h> |
7d308590 | 18 | #include <linux/lm_interface.h> |
b3b94faa DT |
19 | #include <asm/uaccess.h> |
20 | ||
21 | #include "gfs2.h" | |
5c676f6d | 22 | #include "incore.h" |
b3b94faa DT |
23 | #include "sys.h" |
24 | #include "super.h" | |
25 | #include "glock.h" | |
26 | #include "quota.h" | |
5c676f6d | 27 | #include "util.h" |
b3b94faa DT |
28 | |
29 | char *gfs2_sys_margs; | |
30 | spinlock_t gfs2_sys_margs_lock; | |
31 | ||
32 | static ssize_t id_show(struct gfs2_sbd *sdp, char *buf) | |
33 | { | |
c7227e46 BP |
34 | return snprintf(buf, PAGE_SIZE, "%u:%u\n", |
35 | MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev)); | |
b3b94faa DT |
36 | } |
37 | ||
38 | static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf) | |
39 | { | |
3204a6c0 | 40 | return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname); |
b3b94faa DT |
41 | } |
42 | ||
43 | static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) | |
44 | { | |
45 | unsigned int count; | |
46 | ||
f55ab26a | 47 | mutex_lock(&sdp->sd_freeze_lock); |
b3b94faa | 48 | count = sdp->sd_freeze_count; |
f55ab26a | 49 | mutex_unlock(&sdp->sd_freeze_lock); |
b3b94faa | 50 | |
3204a6c0 | 51 | return snprintf(buf, PAGE_SIZE, "%u\n", count); |
b3b94faa DT |
52 | } |
53 | ||
54 | static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
55 | { | |
56 | ssize_t ret = len; | |
57 | int error = 0; | |
58 | int n = simple_strtol(buf, NULL, 0); | |
59 | ||
60 | if (!capable(CAP_SYS_ADMIN)) | |
61 | return -EACCES; | |
62 | ||
63 | switch (n) { | |
64 | case 0: | |
65 | gfs2_unfreeze_fs(sdp); | |
66 | break; | |
67 | case 1: | |
68 | error = gfs2_freeze_fs(sdp); | |
69 | break; | |
70 | default: | |
71 | ret = -EINVAL; | |
72 | } | |
73 | ||
74 | if (error) | |
75 | fs_warn(sdp, "freeze %d error %d", n, error); | |
76 | ||
77 | return ret; | |
78 | } | |
79 | ||
80 | static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) | |
81 | { | |
82 | unsigned int b = test_bit(SDF_SHUTDOWN, &sdp->sd_flags); | |
3204a6c0 | 83 | return snprintf(buf, PAGE_SIZE, "%u\n", b); |
b3b94faa DT |
84 | } |
85 | ||
86 | static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) | |
87 | { | |
88 | if (!capable(CAP_SYS_ADMIN)) | |
89 | return -EACCES; | |
90 | ||
91 | if (simple_strtol(buf, NULL, 0) != 1) | |
92 | return -EINVAL; | |
93 | ||
94 | gfs2_lm_withdraw(sdp, | |
95 | "GFS2: fsid=%s: withdrawing from cluster at user's request\n", | |
96 | sdp->sd_fsname); | |
97 | return len; | |
98 | } | |
99 | ||
100 | static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, | |
101 | size_t len) | |
102 | { | |
103 | if (!capable(CAP_SYS_ADMIN)) | |
104 | return -EACCES; | |
105 | ||
106 | if (simple_strtol(buf, NULL, 0) != 1) | |
107 | return -EINVAL; | |
108 | ||
109 | gfs2_statfs_sync(sdp); | |
110 | return len; | |
111 | } | |
112 | ||
b3b94faa DT |
113 | static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, |
114 | size_t len) | |
115 | { | |
116 | if (!capable(CAP_SYS_ADMIN)) | |
117 | return -EACCES; | |
118 | ||
119 | if (simple_strtol(buf, NULL, 0) != 1) | |
120 | return -EINVAL; | |
121 | ||
122 | gfs2_quota_sync(sdp); | |
123 | return len; | |
124 | } | |
125 | ||
126 | static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, | |
127 | size_t len) | |
128 | { | |
cd915493 | 129 | u32 id; |
b3b94faa DT |
130 | |
131 | if (!capable(CAP_SYS_ADMIN)) | |
132 | return -EACCES; | |
133 | ||
134 | id = simple_strtoul(buf, NULL, 0); | |
135 | ||
136 | gfs2_quota_refresh(sdp, 1, id); | |
137 | return len; | |
138 | } | |
139 | ||
140 | static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, | |
141 | size_t len) | |
142 | { | |
cd915493 | 143 | u32 id; |
b3b94faa DT |
144 | |
145 | if (!capable(CAP_SYS_ADMIN)) | |
146 | return -EACCES; | |
147 | ||
148 | id = simple_strtoul(buf, NULL, 0); | |
149 | ||
150 | gfs2_quota_refresh(sdp, 0, id); | |
151 | return len; | |
152 | } | |
153 | ||
154 | struct gfs2_attr { | |
155 | struct attribute attr; | |
156 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
157 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
158 | }; | |
159 | ||
160 | #define GFS2_ATTR(name, mode, show, store) \ | |
161 | static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store) | |
162 | ||
163 | GFS2_ATTR(id, 0444, id_show, NULL); | |
164 | GFS2_ATTR(fsname, 0444, fsname_show, NULL); | |
165 | GFS2_ATTR(freeze, 0644, freeze_show, freeze_store); | |
b3b94faa DT |
166 | GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store); |
167 | GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store); | |
168 | GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store); | |
169 | GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store); | |
170 | GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store); | |
171 | ||
172 | static struct attribute *gfs2_attrs[] = { | |
173 | &gfs2_attr_id.attr, | |
174 | &gfs2_attr_fsname.attr, | |
175 | &gfs2_attr_freeze.attr, | |
b3b94faa DT |
176 | &gfs2_attr_withdraw.attr, |
177 | &gfs2_attr_statfs_sync.attr, | |
178 | &gfs2_attr_quota_sync.attr, | |
179 | &gfs2_attr_quota_refresh_user.attr, | |
180 | &gfs2_attr_quota_refresh_group.attr, | |
181 | NULL, | |
182 | }; | |
183 | ||
184 | static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr, | |
185 | char *buf) | |
186 | { | |
187 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
188 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
189 | return a->show ? a->show(sdp, buf) : 0; | |
190 | } | |
191 | ||
192 | static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr, | |
193 | const char *buf, size_t len) | |
194 | { | |
195 | struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj); | |
196 | struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr); | |
197 | return a->store ? a->store(sdp, buf, len) : len; | |
198 | } | |
199 | ||
200 | static struct sysfs_ops gfs2_attr_ops = { | |
201 | .show = gfs2_attr_show, | |
202 | .store = gfs2_attr_store, | |
203 | }; | |
204 | ||
205 | static struct kobj_type gfs2_ktype = { | |
206 | .default_attrs = gfs2_attrs, | |
207 | .sysfs_ops = &gfs2_attr_ops, | |
208 | }; | |
209 | ||
9bec101a | 210 | static struct kset *gfs2_kset; |
b3b94faa DT |
211 | |
212 | /* | |
213 | * display struct lm_lockstruct fields | |
214 | */ | |
215 | ||
216 | struct lockstruct_attr { | |
217 | struct attribute attr; | |
218 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
219 | }; | |
220 | ||
221 | #define LOCKSTRUCT_ATTR(name, fmt) \ | |
222 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
223 | { \ | |
3204a6c0 | 224 | return snprintf(buf, PAGE_SIZE, fmt, sdp->sd_lockstruct.ls_##name); \ |
b3b94faa DT |
225 | } \ |
226 | static struct lockstruct_attr lockstruct_attr_##name = __ATTR_RO(name) | |
227 | ||
228 | LOCKSTRUCT_ATTR(jid, "%u\n"); | |
229 | LOCKSTRUCT_ATTR(first, "%u\n"); | |
230 | LOCKSTRUCT_ATTR(lvb_size, "%u\n"); | |
231 | LOCKSTRUCT_ATTR(flags, "%d\n"); | |
232 | ||
233 | static struct attribute *lockstruct_attrs[] = { | |
234 | &lockstruct_attr_jid.attr, | |
235 | &lockstruct_attr_first.attr, | |
236 | &lockstruct_attr_lvb_size.attr, | |
237 | &lockstruct_attr_flags.attr, | |
ea67eedb | 238 | NULL, |
b3b94faa DT |
239 | }; |
240 | ||
241 | /* | |
242 | * display struct gfs2_args fields | |
243 | */ | |
244 | ||
245 | struct args_attr { | |
246 | struct attribute attr; | |
247 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
248 | }; | |
249 | ||
250 | #define ARGS_ATTR(name, fmt) \ | |
251 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
252 | { \ | |
3204a6c0 | 253 | return snprintf(buf, PAGE_SIZE, fmt, sdp->sd_args.ar_##name); \ |
b3b94faa DT |
254 | } \ |
255 | static struct args_attr args_attr_##name = __ATTR_RO(name) | |
256 | ||
257 | ARGS_ATTR(lockproto, "%s\n"); | |
258 | ARGS_ATTR(locktable, "%s\n"); | |
259 | ARGS_ATTR(hostdata, "%s\n"); | |
260 | ARGS_ATTR(spectator, "%d\n"); | |
261 | ARGS_ATTR(ignore_local_fs, "%d\n"); | |
262 | ARGS_ATTR(localcaching, "%d\n"); | |
263 | ARGS_ATTR(localflocks, "%d\n"); | |
264 | ARGS_ATTR(debug, "%d\n"); | |
265 | ARGS_ATTR(upgrade, "%d\n"); | |
266 | ARGS_ATTR(num_glockd, "%u\n"); | |
267 | ARGS_ATTR(posix_acl, "%d\n"); | |
268 | ARGS_ATTR(quota, "%u\n"); | |
269 | ARGS_ATTR(suiddir, "%d\n"); | |
270 | ARGS_ATTR(data, "%d\n"); | |
271 | ||
b3b94faa DT |
272 | static struct attribute *args_attrs[] = { |
273 | &args_attr_lockproto.attr, | |
274 | &args_attr_locktable.attr, | |
275 | &args_attr_hostdata.attr, | |
276 | &args_attr_spectator.attr, | |
277 | &args_attr_ignore_local_fs.attr, | |
278 | &args_attr_localcaching.attr, | |
279 | &args_attr_localflocks.attr, | |
280 | &args_attr_debug.attr, | |
281 | &args_attr_upgrade.attr, | |
282 | &args_attr_num_glockd.attr, | |
283 | &args_attr_posix_acl.attr, | |
284 | &args_attr_quota.attr, | |
285 | &args_attr_suiddir.attr, | |
286 | &args_attr_data.attr, | |
ea67eedb | 287 | NULL, |
b3b94faa DT |
288 | }; |
289 | ||
290 | /* | |
291 | * display counters from superblock | |
292 | */ | |
293 | ||
294 | struct counters_attr { | |
295 | struct attribute attr; | |
296 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
297 | }; | |
298 | ||
6a6b3d01 | 299 | #define COUNTERS_ATTR(name, fmt) \ |
b3b94faa DT |
300 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ |
301 | { \ | |
3204a6c0 DT |
302 | return snprintf(buf, PAGE_SIZE, fmt, \ |
303 | (unsigned int)atomic_read(&sdp->sd_##name)); \ | |
b3b94faa DT |
304 | } \ |
305 | static struct counters_attr counters_attr_##name = __ATTR_RO(name) | |
306 | ||
6a6b3d01 | 307 | COUNTERS_ATTR(reclaimed, "%u\n"); |
b3b94faa DT |
308 | |
309 | static struct attribute *counters_attrs[] = { | |
b3b94faa | 310 | &counters_attr_reclaimed.attr, |
ea67eedb | 311 | NULL, |
b3b94faa DT |
312 | }; |
313 | ||
314 | /* | |
315 | * get and set struct gfs2_tune fields | |
316 | */ | |
317 | ||
318 | static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf) | |
319 | { | |
3204a6c0 DT |
320 | return snprintf(buf, PAGE_SIZE, "%u %u\n", |
321 | sdp->sd_tune.gt_quota_scale_num, | |
322 | sdp->sd_tune.gt_quota_scale_den); | |
b3b94faa DT |
323 | } |
324 | ||
325 | static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf, | |
326 | size_t len) | |
327 | { | |
328 | struct gfs2_tune *gt = &sdp->sd_tune; | |
329 | unsigned int x, y; | |
330 | ||
331 | if (!capable(CAP_SYS_ADMIN)) | |
332 | return -EACCES; | |
333 | ||
334 | if (sscanf(buf, "%u %u", &x, &y) != 2 || !y) | |
335 | return -EINVAL; | |
336 | ||
337 | spin_lock(>->gt_spin); | |
338 | gt->gt_quota_scale_num = x; | |
339 | gt->gt_quota_scale_den = y; | |
340 | spin_unlock(>->gt_spin); | |
341 | return len; | |
342 | } | |
343 | ||
344 | static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, | |
345 | int check_zero, const char *buf, size_t len) | |
346 | { | |
347 | struct gfs2_tune *gt = &sdp->sd_tune; | |
348 | unsigned int x; | |
349 | ||
350 | if (!capable(CAP_SYS_ADMIN)) | |
351 | return -EACCES; | |
352 | ||
353 | x = simple_strtoul(buf, NULL, 0); | |
354 | ||
355 | if (check_zero && !x) | |
356 | return -EINVAL; | |
357 | ||
358 | spin_lock(>->gt_spin); | |
359 | *field = x; | |
360 | spin_unlock(>->gt_spin); | |
361 | return len; | |
362 | } | |
363 | ||
364 | struct tune_attr { | |
365 | struct attribute attr; | |
366 | ssize_t (*show)(struct gfs2_sbd *, char *); | |
367 | ssize_t (*store)(struct gfs2_sbd *, const char *, size_t); | |
368 | }; | |
369 | ||
370 | #define TUNE_ATTR_3(name, show, store) \ | |
371 | static struct tune_attr tune_attr_##name = __ATTR(name, 0644, show, store) | |
372 | ||
373 | #define TUNE_ATTR_2(name, store) \ | |
374 | static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \ | |
375 | { \ | |
3204a6c0 | 376 | return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \ |
b3b94faa DT |
377 | } \ |
378 | TUNE_ATTR_3(name, name##_show, store) | |
379 | ||
380 | #define TUNE_ATTR(name, check_zero) \ | |
381 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
382 | { \ | |
383 | return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \ | |
384 | } \ | |
385 | TUNE_ATTR_2(name, name##_store) | |
386 | ||
387 | #define TUNE_ATTR_DAEMON(name, process) \ | |
388 | static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\ | |
389 | { \ | |
390 | ssize_t r = tune_set(sdp, &sdp->sd_tune.gt_##name, 1, buf, len); \ | |
391 | wake_up_process(sdp->sd_##process); \ | |
392 | return r; \ | |
393 | } \ | |
394 | TUNE_ATTR_2(name, name##_store) | |
395 | ||
b3b94faa DT |
396 | TUNE_ATTR(demote_secs, 0); |
397 | TUNE_ATTR(incore_log_blocks, 0); | |
398 | TUNE_ATTR(log_flush_secs, 0); | |
b3b94faa DT |
399 | TUNE_ATTR(quota_warn_period, 0); |
400 | TUNE_ATTR(quota_quantum, 0); | |
b3b94faa DT |
401 | TUNE_ATTR(max_readahead, 0); |
402 | TUNE_ATTR(complain_secs, 0); | |
b3b94faa DT |
403 | TUNE_ATTR(statfs_slow, 0); |
404 | TUNE_ATTR(new_files_jdata, 0); | |
b3b94faa DT |
405 | TUNE_ATTR(quota_simul_sync, 1); |
406 | TUNE_ATTR(quota_cache_secs, 1); | |
b3b94faa | 407 | TUNE_ATTR(stall_secs, 1); |
b3b94faa | 408 | TUNE_ATTR(statfs_quantum, 1); |
b3b94faa DT |
409 | TUNE_ATTR_DAEMON(recoverd_secs, recoverd_process); |
410 | TUNE_ATTR_DAEMON(logd_secs, logd_process); | |
b3b94faa DT |
411 | TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store); |
412 | ||
413 | static struct attribute *tune_attrs[] = { | |
b3b94faa DT |
414 | &tune_attr_demote_secs.attr, |
415 | &tune_attr_incore_log_blocks.attr, | |
416 | &tune_attr_log_flush_secs.attr, | |
b3b94faa DT |
417 | &tune_attr_quota_warn_period.attr, |
418 | &tune_attr_quota_quantum.attr, | |
b3b94faa DT |
419 | &tune_attr_max_readahead.attr, |
420 | &tune_attr_complain_secs.attr, | |
b3b94faa DT |
421 | &tune_attr_statfs_slow.attr, |
422 | &tune_attr_quota_simul_sync.attr, | |
423 | &tune_attr_quota_cache_secs.attr, | |
b3b94faa | 424 | &tune_attr_stall_secs.attr, |
b3b94faa | 425 | &tune_attr_statfs_quantum.attr, |
b3b94faa DT |
426 | &tune_attr_recoverd_secs.attr, |
427 | &tune_attr_logd_secs.attr, | |
b3b94faa DT |
428 | &tune_attr_quota_scale.attr, |
429 | &tune_attr_new_files_jdata.attr, | |
ea67eedb | 430 | NULL, |
b3b94faa DT |
431 | }; |
432 | ||
433 | static struct attribute_group lockstruct_group = { | |
434 | .name = "lockstruct", | |
ea67eedb | 435 | .attrs = lockstruct_attrs, |
b3b94faa DT |
436 | }; |
437 | ||
438 | static struct attribute_group counters_group = { | |
439 | .name = "counters", | |
ea67eedb | 440 | .attrs = counters_attrs, |
b3b94faa DT |
441 | }; |
442 | ||
443 | static struct attribute_group args_group = { | |
444 | .name = "args", | |
ea67eedb | 445 | .attrs = args_attrs, |
b3b94faa DT |
446 | }; |
447 | ||
448 | static struct attribute_group tune_group = { | |
449 | .name = "tune", | |
ea67eedb | 450 | .attrs = tune_attrs, |
b3b94faa DT |
451 | }; |
452 | ||
453 | int gfs2_sys_fs_add(struct gfs2_sbd *sdp) | |
454 | { | |
455 | int error; | |
456 | ||
9bec101a | 457 | sdp->sd_kobj.kset = gfs2_kset; |
901195ed GKH |
458 | error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL, |
459 | "%s", sdp->sd_table_name); | |
b3b94faa DT |
460 | if (error) |
461 | goto fail; | |
462 | ||
463 | error = sysfs_create_group(&sdp->sd_kobj, &lockstruct_group); | |
464 | if (error) | |
465 | goto fail_reg; | |
466 | ||
467 | error = sysfs_create_group(&sdp->sd_kobj, &counters_group); | |
468 | if (error) | |
469 | goto fail_lockstruct; | |
470 | ||
471 | error = sysfs_create_group(&sdp->sd_kobj, &args_group); | |
472 | if (error) | |
473 | goto fail_counters; | |
474 | ||
475 | error = sysfs_create_group(&sdp->sd_kobj, &tune_group); | |
476 | if (error) | |
477 | goto fail_args; | |
478 | ||
901195ed | 479 | kobject_uevent(&sdp->sd_kobj, KOBJ_ADD); |
b3b94faa DT |
480 | return 0; |
481 | ||
a91ea69f | 482 | fail_args: |
b3b94faa | 483 | sysfs_remove_group(&sdp->sd_kobj, &args_group); |
a91ea69f | 484 | fail_counters: |
b3b94faa | 485 | sysfs_remove_group(&sdp->sd_kobj, &counters_group); |
a91ea69f | 486 | fail_lockstruct: |
b3b94faa | 487 | sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); |
a91ea69f | 488 | fail_reg: |
197b12d6 | 489 | kobject_put(&sdp->sd_kobj); |
a91ea69f | 490 | fail: |
65952fb4 | 491 | fs_err(sdp, "error %d adding sysfs files", error); |
b3b94faa DT |
492 | return error; |
493 | } | |
494 | ||
495 | void gfs2_sys_fs_del(struct gfs2_sbd *sdp) | |
496 | { | |
497 | sysfs_remove_group(&sdp->sd_kobj, &tune_group); | |
498 | sysfs_remove_group(&sdp->sd_kobj, &args_group); | |
499 | sysfs_remove_group(&sdp->sd_kobj, &counters_group); | |
500 | sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group); | |
197b12d6 | 501 | kobject_put(&sdp->sd_kobj); |
b3b94faa DT |
502 | } |
503 | ||
504 | int gfs2_sys_init(void) | |
505 | { | |
506 | gfs2_sys_margs = NULL; | |
507 | spin_lock_init(&gfs2_sys_margs_lock); | |
9bec101a GKH |
508 | gfs2_kset = kset_create_and_add("gfs2", NULL, fs_kobj); |
509 | if (!gfs2_kset) | |
510 | return -ENOMEM; | |
511 | return 0; | |
b3b94faa DT |
512 | } |
513 | ||
514 | void gfs2_sys_uninit(void) | |
515 | { | |
516 | kfree(gfs2_sys_margs); | |
9bec101a | 517 | kset_unregister(gfs2_kset); |
b3b94faa DT |
518 | } |
519 |