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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. | |
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 | |
7 | * of the GNU General Public License v.2. | |
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/vmalloc.h> | |
16 | #include <linux/blkdev.h> | |
17 | #include <linux/kthread.h> | |
5c676f6d | 18 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
19 | #include <asm/semaphore.h> |
20 | ||
21 | #include "gfs2.h" | |
5c676f6d SW |
22 | #include "lm_interface.h" |
23 | #include "incore.h" | |
b3b94faa DT |
24 | #include "daemon.h" |
25 | #include "glock.h" | |
26 | #include "glops.h" | |
27 | #include "inode.h" | |
28 | #include "lm.h" | |
29 | #include "mount.h" | |
30 | #include "ops_export.h" | |
31 | #include "ops_fstype.h" | |
32 | #include "ops_super.h" | |
33 | #include "recovery.h" | |
34 | #include "rgrp.h" | |
35 | #include "super.h" | |
36 | #include "unlinked.h" | |
37 | #include "sys.h" | |
5c676f6d | 38 | #include "util.h" |
b3b94faa DT |
39 | |
40 | #define DO 0 | |
41 | #define UNDO 1 | |
42 | ||
43 | static struct gfs2_sbd *init_sbd(struct super_block *sb) | |
44 | { | |
45 | struct gfs2_sbd *sdp; | |
46 | unsigned int x; | |
47 | ||
48 | sdp = vmalloc(sizeof(struct gfs2_sbd)); | |
49 | if (!sdp) | |
50 | return NULL; | |
51 | ||
52 | memset(sdp, 0, sizeof(struct gfs2_sbd)); | |
53 | ||
5c676f6d | 54 | sb->s_fs_info = sdp; |
b3b94faa DT |
55 | sdp->sd_vfs = sb; |
56 | ||
57 | gfs2_tune_init(&sdp->sd_tune); | |
58 | ||
59 | for (x = 0; x < GFS2_GL_HASH_SIZE; x++) { | |
60 | sdp->sd_gl_hash[x].hb_lock = RW_LOCK_UNLOCKED; | |
61 | INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list); | |
62 | } | |
63 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); | |
64 | spin_lock_init(&sdp->sd_reclaim_lock); | |
65 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
f55ab26a | 66 | mutex_init(&sdp->sd_invalidate_inodes_mutex); |
b3b94faa | 67 | |
f55ab26a | 68 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 69 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 70 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
71 | |
72 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 73 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
74 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
75 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
76 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
77 | ||
78 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
79 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 80 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa DT |
81 | |
82 | INIT_LIST_HEAD(&sdp->sd_unlinked_list); | |
83 | spin_lock_init(&sdp->sd_unlinked_spin); | |
f55ab26a | 84 | mutex_init(&sdp->sd_unlinked_mutex); |
b3b94faa DT |
85 | |
86 | INIT_LIST_HEAD(&sdp->sd_quota_list); | |
87 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 88 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
89 | |
90 | spin_lock_init(&sdp->sd_log_lock); | |
91 | init_waitqueue_head(&sdp->sd_log_trans_wq); | |
92 | init_waitqueue_head(&sdp->sd_log_flush_wq); | |
93 | ||
94 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
95 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
96 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
97 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
98 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
99 | ||
100 | INIT_LIST_HEAD(&sdp->sd_log_blks_list); | |
101 | init_waitqueue_head(&sdp->sd_log_blks_wait); | |
102 | ||
103 | INIT_LIST_HEAD(&sdp->sd_ail1_list); | |
104 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
105 | ||
f55ab26a | 106 | mutex_init(&sdp->sd_log_flush_lock); |
b3b94faa DT |
107 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
108 | ||
109 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
110 | ||
f55ab26a | 111 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
112 | |
113 | return sdp; | |
114 | } | |
115 | ||
419c93e0 | 116 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 117 | { |
419c93e0 | 118 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
119 | |
120 | sb->s_magic = GFS2_MAGIC; | |
121 | sb->s_op = &gfs2_super_ops; | |
122 | sb->s_export_op = &gfs2_export_ops; | |
123 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
124 | ||
125 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 126 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
127 | |
128 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
129 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
130 | } |
131 | ||
132 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
133 | { | |
134 | struct gfs2_sb *sb = NULL; | |
135 | char *proto, *table; | |
136 | int error = 0; | |
137 | ||
138 | proto = sdp->sd_args.ar_lockproto; | |
139 | table = sdp->sd_args.ar_locktable; | |
140 | ||
141 | /* Try to autodetect */ | |
142 | ||
143 | if (!proto[0] || !table[0]) { | |
144 | struct buffer_head *bh; | |
145 | bh = sb_getblk(sdp->sd_vfs, | |
146 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
147 | lock_buffer(bh); | |
148 | clear_buffer_uptodate(bh); | |
149 | clear_buffer_dirty(bh); | |
150 | unlock_buffer(bh); | |
151 | ll_rw_block(READ, 1, &bh); | |
152 | wait_on_buffer(bh); | |
153 | ||
154 | if (!buffer_uptodate(bh)) { | |
155 | brelse(bh); | |
156 | return -EIO; | |
157 | } | |
158 | ||
159 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); | |
160 | if (!sb) { | |
161 | brelse(bh); | |
162 | return -ENOMEM; | |
163 | } | |
164 | gfs2_sb_in(sb, bh->b_data); | |
165 | brelse(bh); | |
166 | ||
167 | error = gfs2_check_sb(sdp, sb, silent); | |
168 | if (error) | |
169 | goto out; | |
170 | ||
171 | if (!proto[0]) | |
172 | proto = sb->sb_lockproto; | |
173 | if (!table[0]) | |
174 | table = sb->sb_locktable; | |
175 | } | |
176 | ||
177 | if (!table[0]) | |
178 | table = sdp->sd_vfs->s_id; | |
179 | ||
180 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
181 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
182 | ||
183 | out: | |
184 | kfree(sb); | |
185 | ||
186 | return error; | |
187 | } | |
188 | ||
189 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
190 | int undo) | |
191 | { | |
192 | struct task_struct *p; | |
193 | int error = 0; | |
194 | ||
195 | if (undo) | |
196 | goto fail_trans; | |
197 | ||
198 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
199 | error = IS_ERR(p); | |
200 | if (error) { | |
201 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
202 | return error; | |
203 | } | |
204 | sdp->sd_scand_process = p; | |
205 | ||
206 | for (sdp->sd_glockd_num = 0; | |
207 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
208 | sdp->sd_glockd_num++) { | |
209 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
210 | error = IS_ERR(p); | |
211 | if (error) { | |
212 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
213 | goto fail; | |
214 | } | |
215 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
216 | } | |
217 | ||
218 | error = gfs2_glock_nq_num(sdp, | |
219 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
220 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
221 | mount_gh); | |
222 | if (error) { | |
223 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
224 | goto fail; | |
225 | } | |
226 | ||
227 | error = gfs2_glock_nq_num(sdp, | |
228 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
229 | LM_ST_SHARED, | |
230 | LM_FLAG_NOEXP | GL_EXACT | GL_NEVER_RECURSE, | |
231 | &sdp->sd_live_gh); | |
232 | if (error) { | |
233 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
234 | goto fail_mount; | |
235 | } | |
236 | ||
237 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
238 | CREATE, &sdp->sd_rename_gl); | |
239 | if (error) { | |
240 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
241 | goto fail_live; | |
242 | } | |
243 | ||
244 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
245 | CREATE, &sdp->sd_trans_gl); | |
246 | if (error) { | |
247 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
248 | goto fail_rename; | |
249 | } | |
250 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
251 | ||
252 | return 0; | |
253 | ||
254 | fail_trans: | |
255 | gfs2_glock_put(sdp->sd_trans_gl); | |
256 | ||
257 | fail_rename: | |
258 | gfs2_glock_put(sdp->sd_rename_gl); | |
259 | ||
260 | fail_live: | |
261 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
262 | ||
263 | fail_mount: | |
264 | gfs2_glock_dq_uninit(mount_gh); | |
265 | ||
266 | fail: | |
267 | while (sdp->sd_glockd_num--) | |
268 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
269 | ||
270 | kthread_stop(sdp->sd_scand_process); | |
271 | ||
272 | return error; | |
273 | } | |
274 | ||
c9fd4307 SW |
275 | static struct inode *gfs2_lookup_root(struct gfs2_sbd *sdp, |
276 | const struct gfs2_inum *inum) | |
f42faf4f SW |
277 | { |
278 | int error; | |
279 | struct gfs2_glock *gl; | |
280 | struct gfs2_inode *ip; | |
c9fd4307 | 281 | struct inode *inode; |
f42faf4f | 282 | |
c9fd4307 | 283 | error = gfs2_glock_get(sdp, inum->no_addr, |
f42faf4f SW |
284 | &gfs2_inode_glops, CREATE, &gl); |
285 | if (!error) { | |
419c93e0 | 286 | error = gfs2_inode_get(gl, inum, CREATE, &ip); |
f42faf4f | 287 | if (!error) { |
419c93e0 | 288 | gfs2_inode_min_init(ip, DT_DIR); |
c9fd4307 | 289 | inode = gfs2_ip2v(ip); |
f42faf4f | 290 | gfs2_inode_put(ip); |
419c93e0 | 291 | gfs2_glock_put(gl); |
c9fd4307 | 292 | return inode; |
f42faf4f SW |
293 | } |
294 | gfs2_glock_put(gl); | |
295 | } | |
c9fd4307 | 296 | return ERR_PTR(error); |
f42faf4f SW |
297 | } |
298 | ||
b3b94faa DT |
299 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
300 | { | |
301 | struct super_block *sb = sdp->sd_vfs; | |
302 | struct gfs2_holder sb_gh; | |
419c93e0 | 303 | struct gfs2_inum *inum; |
f42faf4f | 304 | struct inode *inode; |
b3b94faa DT |
305 | int error = 0; |
306 | ||
307 | if (undo) { | |
b3b94faa DT |
308 | return 0; |
309 | } | |
310 | ||
311 | error = gfs2_glock_nq_num(sdp, | |
312 | GFS2_SB_LOCK, &gfs2_meta_glops, | |
313 | LM_ST_SHARED, 0, &sb_gh); | |
314 | if (error) { | |
315 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
316 | return error; | |
317 | } | |
318 | ||
319 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
320 | if (error) { | |
321 | fs_err(sdp, "can't read superblock: %d\n", error); | |
322 | goto out; | |
323 | } | |
324 | ||
325 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 326 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 327 | error = -EINVAL; |
b3b94faa DT |
328 | fs_err(sdp, "FS block size (%u) is too small for device " |
329 | "block size (%u)\n", | |
330 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
331 | goto out; | |
332 | } | |
333 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 334 | error = -EINVAL; |
b3b94faa DT |
335 | fs_err(sdp, "FS block size (%u) is too big for machine " |
336 | "page size (%u)\n", | |
337 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
338 | goto out; | |
339 | } | |
340 | ||
341 | /* Get rid of buffers from the original block size */ | |
342 | sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA); | |
343 | sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift; | |
344 | ||
345 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); | |
346 | ||
f42faf4f | 347 | /* Get the root inode */ |
419c93e0 SW |
348 | inum = &sdp->sd_sb.sb_root_dir; |
349 | if (sb->s_type == &gfs2meta_fs_type) | |
350 | inum = &sdp->sd_sb.sb_master_dir; | |
351 | inode = gfs2_lookup_root(sdp, inum); | |
c9fd4307 SW |
352 | if (IS_ERR(inode)) { |
353 | error = PTR_ERR(inode); | |
f42faf4f SW |
354 | fs_err(sdp, "can't read in root inode: %d\n", error); |
355 | goto out; | |
356 | } | |
b3b94faa | 357 | |
f42faf4f SW |
358 | sb->s_root = d_alloc_root(inode); |
359 | if (!sb->s_root) { | |
360 | fs_err(sdp, "can't get root dentry\n"); | |
361 | error = -ENOMEM; | |
c9fd4307 | 362 | iput(inode); |
f42faf4f | 363 | } |
f42faf4f | 364 | out: |
b3b94faa | 365 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
366 | return error; |
367 | } | |
368 | ||
369 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
370 | { | |
371 | struct gfs2_holder ji_gh; | |
372 | struct task_struct *p; | |
5c676f6d | 373 | struct gfs2_inode *ip; |
b3b94faa DT |
374 | int jindex = 1; |
375 | int error = 0; | |
376 | ||
377 | if (undo) { | |
378 | jindex = 0; | |
379 | goto fail_recoverd; | |
380 | } | |
381 | ||
382 | error = gfs2_lookup_simple(sdp->sd_master_dir, "jindex", | |
383 | &sdp->sd_jindex); | |
384 | if (error) { | |
385 | fs_err(sdp, "can't lookup journal index: %d\n", error); | |
386 | return error; | |
387 | } | |
5c676f6d SW |
388 | ip = sdp->sd_jindex->u.generic_ip; |
389 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
b3b94faa DT |
390 | |
391 | /* Load in the journal index special file */ | |
392 | ||
393 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
394 | if (error) { | |
395 | fs_err(sdp, "can't read journal index: %d\n", error); | |
396 | goto fail; | |
397 | } | |
398 | ||
399 | error = -EINVAL; | |
400 | if (!gfs2_jindex_size(sdp)) { | |
401 | fs_err(sdp, "no journals!\n"); | |
402 | goto fail_jindex; | |
403 | } | |
404 | ||
405 | if (sdp->sd_args.ar_spectator) { | |
406 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
407 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
408 | } else { | |
409 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
410 | fs_err(sdp, "can't mount journal #%u\n", | |
411 | sdp->sd_lockstruct.ls_jid); | |
412 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
413 | gfs2_jindex_size(sdp), | |
414 | gfs2_jindex_size(sdp) - 1); | |
415 | goto fail_jindex; | |
416 | } | |
417 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
418 | ||
419 | error = gfs2_glock_nq_num(sdp, | |
420 | sdp->sd_lockstruct.ls_jid, | |
421 | &gfs2_journal_glops, | |
422 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
423 | &sdp->sd_journal_gh); | |
424 | if (error) { | |
425 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
426 | goto fail_jindex; | |
427 | } | |
428 | ||
5c676f6d SW |
429 | ip = sdp->sd_jdesc->jd_inode->u.generic_ip; |
430 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
431 | LM_ST_SHARED, |
432 | LM_FLAG_NOEXP | GL_EXACT, | |
433 | &sdp->sd_jinode_gh); | |
434 | if (error) { | |
435 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
436 | error); | |
437 | goto fail_journal_gh; | |
438 | } | |
439 | ||
440 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
441 | if (error) { | |
442 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
443 | sdp->sd_jdesc->jd_jid, error); | |
444 | goto fail_jinode_gh; | |
445 | } | |
446 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
447 | } | |
448 | ||
449 | if (sdp->sd_lockstruct.ls_first) { | |
450 | unsigned int x; | |
451 | for (x = 0; x < sdp->sd_journals; x++) { | |
452 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), | |
453 | WAIT); | |
454 | if (error) { | |
455 | fs_err(sdp, "error recovering journal %u: %d\n", | |
456 | x, error); | |
457 | goto fail_jinode_gh; | |
458 | } | |
459 | } | |
460 | ||
461 | gfs2_lm_others_may_mount(sdp); | |
462 | } else if (!sdp->sd_args.ar_spectator) { | |
463 | error = gfs2_recover_journal(sdp->sd_jdesc, WAIT); | |
464 | if (error) { | |
465 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
466 | goto fail_jinode_gh; | |
467 | } | |
468 | } | |
469 | ||
470 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
471 | gfs2_glock_dq_uninit(&ji_gh); | |
472 | jindex = 0; | |
473 | ||
474 | /* Disown my Journal glock */ | |
475 | ||
476 | sdp->sd_journal_gh.gh_owner = NULL; | |
477 | sdp->sd_jinode_gh.gh_owner = NULL; | |
478 | ||
479 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); | |
480 | error = IS_ERR(p); | |
481 | if (error) { | |
482 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
483 | goto fail_jinode_gh; | |
484 | } | |
485 | sdp->sd_recoverd_process = p; | |
486 | ||
487 | return 0; | |
488 | ||
489 | fail_recoverd: | |
490 | kthread_stop(sdp->sd_recoverd_process); | |
491 | ||
492 | fail_jinode_gh: | |
493 | if (!sdp->sd_args.ar_spectator) | |
494 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
495 | ||
496 | fail_journal_gh: | |
497 | if (!sdp->sd_args.ar_spectator) | |
498 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
499 | ||
500 | fail_jindex: | |
501 | gfs2_jindex_free(sdp); | |
502 | if (jindex) | |
503 | gfs2_glock_dq_uninit(&ji_gh); | |
504 | ||
505 | fail: | |
f42faf4f | 506 | iput(sdp->sd_jindex); |
b3b94faa DT |
507 | |
508 | return error; | |
509 | } | |
510 | ||
b3b94faa DT |
511 | |
512 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
513 | { | |
b3b94faa | 514 | int error = 0; |
5c676f6d | 515 | struct gfs2_inode *ip; |
c9fd4307 | 516 | struct inode *inode; |
b3b94faa DT |
517 | |
518 | if (undo) | |
f42faf4f SW |
519 | goto fail_qinode; |
520 | ||
c9fd4307 SW |
521 | inode = gfs2_lookup_root(sdp, &sdp->sd_sb.sb_master_dir); |
522 | if (IS_ERR(inode)) { | |
523 | error = PTR_ERR(inode); | |
f42faf4f SW |
524 | fs_err(sdp, "can't read in master directory: %d\n", error); |
525 | goto fail; | |
526 | } | |
c9fd4307 | 527 | sdp->sd_master_dir = inode; |
f42faf4f SW |
528 | |
529 | error = init_journal(sdp, undo); | |
530 | if (error) | |
531 | goto fail_master; | |
b3b94faa DT |
532 | |
533 | /* Read in the master inode number inode */ | |
534 | error = gfs2_lookup_simple(sdp->sd_master_dir, "inum", | |
535 | &sdp->sd_inum_inode); | |
536 | if (error) { | |
537 | fs_err(sdp, "can't read in inum inode: %d\n", error); | |
f42faf4f | 538 | goto fail_journal; |
b3b94faa DT |
539 | } |
540 | ||
f42faf4f | 541 | |
b3b94faa DT |
542 | /* Read in the master statfs inode */ |
543 | error = gfs2_lookup_simple(sdp->sd_master_dir, "statfs", | |
544 | &sdp->sd_statfs_inode); | |
545 | if (error) { | |
546 | fs_err(sdp, "can't read in statfs inode: %d\n", error); | |
f42faf4f | 547 | goto fail_inum; |
b3b94faa DT |
548 | } |
549 | ||
550 | /* Read in the resource index inode */ | |
551 | error = gfs2_lookup_simple(sdp->sd_master_dir, "rindex", | |
552 | &sdp->sd_rindex); | |
553 | if (error) { | |
554 | fs_err(sdp, "can't get resource index inode: %d\n", error); | |
555 | goto fail_statfs; | |
556 | } | |
5c676f6d SW |
557 | ip = sdp->sd_rindex->u.generic_ip; |
558 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
559 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
560 | |
561 | /* Read in the quota inode */ | |
562 | error = gfs2_lookup_simple(sdp->sd_master_dir, "quota", | |
563 | &sdp->sd_quota_inode); | |
564 | if (error) { | |
565 | fs_err(sdp, "can't get quota file inode: %d\n", error); | |
566 | goto fail_rindex; | |
567 | } | |
b3b94faa DT |
568 | return 0; |
569 | ||
f42faf4f SW |
570 | fail_qinode: |
571 | iput(sdp->sd_quota_inode); | |
b3b94faa | 572 | |
f42faf4f | 573 | fail_rindex: |
b3b94faa | 574 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 575 | iput(sdp->sd_rindex); |
b3b94faa | 576 | |
f42faf4f SW |
577 | fail_statfs: |
578 | iput(sdp->sd_statfs_inode); | |
b3b94faa | 579 | |
f42faf4f SW |
580 | fail_inum: |
581 | iput(sdp->sd_inum_inode); | |
582 | fail_journal: | |
583 | init_journal(sdp, UNDO); | |
584 | fail_master: | |
585 | iput(sdp->sd_master_dir); | |
586 | fail: | |
b3b94faa DT |
587 | return error; |
588 | } | |
589 | ||
590 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
591 | { | |
f42faf4f | 592 | struct inode *pn = NULL; |
b3b94faa DT |
593 | char buf[30]; |
594 | int error = 0; | |
5c676f6d | 595 | struct gfs2_inode *ip; |
b3b94faa DT |
596 | |
597 | if (sdp->sd_args.ar_spectator) | |
598 | return 0; | |
599 | ||
600 | if (undo) | |
601 | goto fail_qc_gh; | |
602 | ||
603 | error = gfs2_lookup_simple(sdp->sd_master_dir, "per_node", &pn); | |
604 | if (error) { | |
605 | fs_err(sdp, "can't find per_node directory: %d\n", error); | |
606 | return error; | |
607 | } | |
608 | ||
609 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
610 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ir_inode); | |
611 | if (error) { | |
612 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); | |
613 | goto fail; | |
614 | } | |
615 | ||
616 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
617 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_sc_inode); | |
618 | if (error) { | |
619 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); | |
620 | goto fail_ir_i; | |
621 | } | |
622 | ||
623 | sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid); | |
624 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ut_inode); | |
625 | if (error) { | |
626 | fs_err(sdp, "can't find local \"ut\" file: %d\n", error); | |
627 | goto fail_sc_i; | |
628 | } | |
629 | ||
630 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); | |
631 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_qc_inode); | |
632 | if (error) { | |
633 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); | |
634 | goto fail_ut_i; | |
635 | } | |
636 | ||
f42faf4f | 637 | iput(pn); |
b3b94faa DT |
638 | pn = NULL; |
639 | ||
5c676f6d SW |
640 | ip = sdp->sd_ir_inode->u.generic_ip; |
641 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
642 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
643 | &sdp->sd_ir_gh); | |
644 | if (error) { | |
645 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
646 | goto fail_qc_i; | |
647 | } | |
648 | ||
5c676f6d SW |
649 | ip = sdp->sd_sc_inode->u.generic_ip; |
650 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
651 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
652 | &sdp->sd_sc_gh); | |
653 | if (error) { | |
654 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
655 | goto fail_ir_gh; | |
656 | } | |
657 | ||
5c676f6d SW |
658 | ip = sdp->sd_ut_inode->u.generic_ip; |
659 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
660 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
661 | &sdp->sd_ut_gh); | |
662 | if (error) { | |
663 | fs_err(sdp, "can't lock local \"ut\" file: %d\n", error); | |
664 | goto fail_sc_gh; | |
665 | } | |
666 | ||
5c676f6d SW |
667 | ip = sdp->sd_qc_inode->u.generic_ip; |
668 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
669 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
670 | &sdp->sd_qc_gh); | |
671 | if (error) { | |
672 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
673 | goto fail_ut_gh; | |
674 | } | |
675 | ||
676 | return 0; | |
677 | ||
678 | fail_qc_gh: | |
679 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
680 | ||
681 | fail_ut_gh: | |
682 | gfs2_glock_dq_uninit(&sdp->sd_ut_gh); | |
683 | ||
684 | fail_sc_gh: | |
685 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
686 | ||
687 | fail_ir_gh: | |
688 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); | |
689 | ||
690 | fail_qc_i: | |
f42faf4f | 691 | iput(sdp->sd_qc_inode); |
b3b94faa DT |
692 | |
693 | fail_ut_i: | |
f42faf4f | 694 | iput(sdp->sd_ut_inode); |
b3b94faa DT |
695 | |
696 | fail_sc_i: | |
f42faf4f | 697 | iput(sdp->sd_sc_inode); |
b3b94faa DT |
698 | |
699 | fail_ir_i: | |
f42faf4f | 700 | iput(sdp->sd_ir_inode); |
b3b94faa DT |
701 | |
702 | fail: | |
703 | if (pn) | |
f42faf4f | 704 | iput(pn); |
b3b94faa DT |
705 | return error; |
706 | } | |
707 | ||
708 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
709 | { | |
710 | struct task_struct *p; | |
711 | int error = 0; | |
712 | ||
713 | if (undo) | |
714 | goto fail_inoded; | |
715 | ||
716 | sdp->sd_log_flush_time = jiffies; | |
717 | sdp->sd_jindex_refresh_time = jiffies; | |
718 | ||
719 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
720 | error = IS_ERR(p); | |
721 | if (error) { | |
722 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
723 | return error; | |
724 | } | |
725 | sdp->sd_logd_process = p; | |
726 | ||
727 | sdp->sd_statfs_sync_time = jiffies; | |
728 | sdp->sd_quota_sync_time = jiffies; | |
729 | ||
730 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
731 | error = IS_ERR(p); | |
732 | if (error) { | |
733 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
734 | goto fail; | |
735 | } | |
736 | sdp->sd_quotad_process = p; | |
737 | ||
738 | p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded"); | |
739 | error = IS_ERR(p); | |
740 | if (error) { | |
741 | fs_err(sdp, "can't start inoded thread: %d\n", error); | |
742 | goto fail_quotad; | |
743 | } | |
744 | sdp->sd_inoded_process = p; | |
745 | ||
746 | return 0; | |
747 | ||
748 | fail_inoded: | |
749 | kthread_stop(sdp->sd_inoded_process); | |
750 | ||
751 | fail_quotad: | |
752 | kthread_stop(sdp->sd_quotad_process); | |
753 | ||
754 | fail: | |
755 | kthread_stop(sdp->sd_logd_process); | |
756 | ||
757 | return error; | |
758 | } | |
759 | ||
760 | /** | |
761 | * fill_super - Read in superblock | |
762 | * @sb: The VFS superblock | |
763 | * @data: Mount options | |
764 | * @silent: Don't complain if it's not a GFS2 filesystem | |
765 | * | |
766 | * Returns: errno | |
767 | */ | |
768 | ||
769 | static int fill_super(struct super_block *sb, void *data, int silent) | |
770 | { | |
771 | struct gfs2_sbd *sdp; | |
772 | struct gfs2_holder mount_gh; | |
773 | int error; | |
774 | ||
775 | sdp = init_sbd(sb); | |
776 | if (!sdp) { | |
d92a8d48 | 777 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
778 | return -ENOMEM; |
779 | } | |
780 | ||
781 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
782 | if (error) { | |
d92a8d48 | 783 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
784 | goto fail; |
785 | } | |
786 | ||
419c93e0 SW |
787 | init_vfs(sb, SDF_NOATIME); |
788 | ||
789 | /* Set up the buffer cache and fill in some fake block size values | |
790 | to allow us to read-in the on-disk superblock. */ | |
791 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
792 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
793 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
794 | GFS2_BASIC_BLOCK_SHIFT; | |
795 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
796 | |
797 | error = init_names(sdp, silent); | |
798 | if (error) | |
799 | goto fail; | |
800 | ||
801 | error = gfs2_sys_fs_add(sdp); | |
802 | if (error) | |
803 | goto fail; | |
804 | ||
805 | error = gfs2_lm_mount(sdp, silent); | |
806 | if (error) | |
807 | goto fail_sys; | |
808 | ||
809 | error = init_locking(sdp, &mount_gh, DO); | |
810 | if (error) | |
811 | goto fail_lm; | |
812 | ||
813 | error = init_sb(sdp, silent, DO); | |
814 | if (error) | |
815 | goto fail_locking; | |
b3b94faa DT |
816 | |
817 | error = init_inodes(sdp, DO); | |
818 | if (error) | |
f42faf4f | 819 | goto fail_sb; |
b3b94faa DT |
820 | |
821 | error = init_per_node(sdp, DO); | |
822 | if (error) | |
823 | goto fail_inodes; | |
824 | ||
825 | error = gfs2_statfs_init(sdp); | |
826 | if (error) { | |
827 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
828 | goto fail_per_node; | |
829 | } | |
830 | ||
831 | error = init_threads(sdp, DO); | |
832 | if (error) | |
833 | goto fail_per_node; | |
834 | ||
835 | if (!(sb->s_flags & MS_RDONLY)) { | |
836 | error = gfs2_make_fs_rw(sdp); | |
837 | if (error) { | |
838 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
839 | goto fail_threads; | |
840 | } | |
841 | } | |
842 | ||
843 | gfs2_glock_dq_uninit(&mount_gh); | |
844 | ||
845 | return 0; | |
846 | ||
847 | fail_threads: | |
848 | init_threads(sdp, UNDO); | |
849 | ||
850 | fail_per_node: | |
851 | init_per_node(sdp, UNDO); | |
852 | ||
853 | fail_inodes: | |
854 | init_inodes(sdp, UNDO); | |
855 | ||
b3b94faa DT |
856 | fail_sb: |
857 | init_sb(sdp, 0, UNDO); | |
858 | ||
859 | fail_locking: | |
860 | init_locking(sdp, &mount_gh, UNDO); | |
861 | ||
862 | fail_lm: | |
863 | gfs2_gl_hash_clear(sdp, WAIT); | |
864 | gfs2_lm_unmount(sdp); | |
865 | while (invalidate_inodes(sb)) | |
866 | yield(); | |
867 | ||
868 | fail_sys: | |
869 | gfs2_sys_fs_del(sdp); | |
870 | ||
871 | fail: | |
872 | vfree(sdp); | |
5c676f6d | 873 | sb->s_fs_info = NULL; |
b3b94faa DT |
874 | |
875 | return error; | |
876 | } | |
877 | ||
878 | static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, | |
879 | int flags, const char *dev_name, | |
880 | void *data) | |
881 | { | |
882 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); | |
883 | } | |
884 | ||
419c93e0 SW |
885 | static void gfs2_kill_sb(struct super_block *sb) |
886 | { | |
887 | kill_block_super(sb); | |
888 | } | |
889 | ||
b3b94faa DT |
890 | struct file_system_type gfs2_fs_type = { |
891 | .name = "gfs2", | |
892 | .fs_flags = FS_REQUIRES_DEV, | |
893 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
894 | .kill_sb = gfs2_kill_sb, |
895 | .owner = THIS_MODULE, | |
896 | }; | |
897 | ||
898 | struct file_system_type gfs2meta_fs_type = { | |
899 | .name = "gfs2meta", | |
900 | .fs_flags = FS_REQUIRES_DEV, | |
901 | .get_sb = gfs2_get_sb, | |
902 | .kill_sb = gfs2_kill_sb, | |
b3b94faa DT |
903 | .owner = THIS_MODULE, |
904 | }; | |
905 |