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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 | ||
71b86f56 | 100 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
101 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
102 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
103 | ||
f55ab26a | 104 | mutex_init(&sdp->sd_log_flush_lock); |
b3b94faa DT |
105 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
106 | ||
107 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
108 | ||
f55ab26a | 109 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
110 | |
111 | return sdp; | |
112 | } | |
113 | ||
419c93e0 | 114 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 115 | { |
419c93e0 | 116 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
117 | |
118 | sb->s_magic = GFS2_MAGIC; | |
119 | sb->s_op = &gfs2_super_ops; | |
120 | sb->s_export_op = &gfs2_export_ops; | |
121 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
122 | ||
123 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 124 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
125 | |
126 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
127 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
128 | } |
129 | ||
130 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
131 | { | |
132 | struct gfs2_sb *sb = NULL; | |
133 | char *proto, *table; | |
134 | int error = 0; | |
135 | ||
136 | proto = sdp->sd_args.ar_lockproto; | |
137 | table = sdp->sd_args.ar_locktable; | |
138 | ||
139 | /* Try to autodetect */ | |
140 | ||
141 | if (!proto[0] || !table[0]) { | |
142 | struct buffer_head *bh; | |
143 | bh = sb_getblk(sdp->sd_vfs, | |
144 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
145 | lock_buffer(bh); | |
146 | clear_buffer_uptodate(bh); | |
147 | clear_buffer_dirty(bh); | |
148 | unlock_buffer(bh); | |
149 | ll_rw_block(READ, 1, &bh); | |
150 | wait_on_buffer(bh); | |
151 | ||
152 | if (!buffer_uptodate(bh)) { | |
153 | brelse(bh); | |
154 | return -EIO; | |
155 | } | |
156 | ||
157 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); | |
158 | if (!sb) { | |
159 | brelse(bh); | |
160 | return -ENOMEM; | |
161 | } | |
162 | gfs2_sb_in(sb, bh->b_data); | |
163 | brelse(bh); | |
164 | ||
165 | error = gfs2_check_sb(sdp, sb, silent); | |
166 | if (error) | |
167 | goto out; | |
168 | ||
169 | if (!proto[0]) | |
170 | proto = sb->sb_lockproto; | |
171 | if (!table[0]) | |
172 | table = sb->sb_locktable; | |
173 | } | |
174 | ||
175 | if (!table[0]) | |
176 | table = sdp->sd_vfs->s_id; | |
177 | ||
178 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
179 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
180 | ||
181 | out: | |
182 | kfree(sb); | |
183 | ||
184 | return error; | |
185 | } | |
186 | ||
187 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
188 | int undo) | |
189 | { | |
190 | struct task_struct *p; | |
191 | int error = 0; | |
192 | ||
193 | if (undo) | |
194 | goto fail_trans; | |
195 | ||
196 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
197 | error = IS_ERR(p); | |
198 | if (error) { | |
199 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
200 | return error; | |
201 | } | |
202 | sdp->sd_scand_process = p; | |
203 | ||
204 | for (sdp->sd_glockd_num = 0; | |
205 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
206 | sdp->sd_glockd_num++) { | |
207 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
208 | error = IS_ERR(p); | |
209 | if (error) { | |
210 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
211 | goto fail; | |
212 | } | |
213 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
214 | } | |
215 | ||
216 | error = gfs2_glock_nq_num(sdp, | |
217 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
218 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
219 | mount_gh); | |
220 | if (error) { | |
221 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
222 | goto fail; | |
223 | } | |
224 | ||
225 | error = gfs2_glock_nq_num(sdp, | |
226 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
227 | LM_ST_SHARED, | |
228 | LM_FLAG_NOEXP | GL_EXACT | GL_NEVER_RECURSE, | |
229 | &sdp->sd_live_gh); | |
230 | if (error) { | |
231 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
232 | goto fail_mount; | |
233 | } | |
234 | ||
235 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
236 | CREATE, &sdp->sd_rename_gl); | |
237 | if (error) { | |
238 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
239 | goto fail_live; | |
240 | } | |
241 | ||
242 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
243 | CREATE, &sdp->sd_trans_gl); | |
244 | if (error) { | |
245 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
246 | goto fail_rename; | |
247 | } | |
248 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
249 | ||
250 | return 0; | |
251 | ||
252 | fail_trans: | |
253 | gfs2_glock_put(sdp->sd_trans_gl); | |
254 | ||
255 | fail_rename: | |
256 | gfs2_glock_put(sdp->sd_rename_gl); | |
257 | ||
258 | fail_live: | |
259 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
260 | ||
261 | fail_mount: | |
262 | gfs2_glock_dq_uninit(mount_gh); | |
263 | ||
264 | fail: | |
265 | while (sdp->sd_glockd_num--) | |
266 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
267 | ||
268 | kthread_stop(sdp->sd_scand_process); | |
269 | ||
270 | return error; | |
271 | } | |
272 | ||
c9fd4307 SW |
273 | static struct inode *gfs2_lookup_root(struct gfs2_sbd *sdp, |
274 | const struct gfs2_inum *inum) | |
f42faf4f SW |
275 | { |
276 | int error; | |
277 | struct gfs2_glock *gl; | |
278 | struct gfs2_inode *ip; | |
c9fd4307 | 279 | struct inode *inode; |
f42faf4f | 280 | |
c9fd4307 | 281 | error = gfs2_glock_get(sdp, inum->no_addr, |
f42faf4f SW |
282 | &gfs2_inode_glops, CREATE, &gl); |
283 | if (!error) { | |
419c93e0 | 284 | error = gfs2_inode_get(gl, inum, CREATE, &ip); |
f42faf4f | 285 | if (!error) { |
419c93e0 | 286 | gfs2_inode_min_init(ip, DT_DIR); |
c9fd4307 | 287 | inode = gfs2_ip2v(ip); |
f42faf4f | 288 | gfs2_inode_put(ip); |
419c93e0 | 289 | gfs2_glock_put(gl); |
c9fd4307 | 290 | return inode; |
f42faf4f SW |
291 | } |
292 | gfs2_glock_put(gl); | |
293 | } | |
c9fd4307 | 294 | return ERR_PTR(error); |
f42faf4f SW |
295 | } |
296 | ||
b3b94faa DT |
297 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
298 | { | |
299 | struct super_block *sb = sdp->sd_vfs; | |
300 | struct gfs2_holder sb_gh; | |
419c93e0 | 301 | struct gfs2_inum *inum; |
f42faf4f | 302 | struct inode *inode; |
b3b94faa DT |
303 | int error = 0; |
304 | ||
305 | if (undo) { | |
b3b94faa DT |
306 | return 0; |
307 | } | |
308 | ||
309 | error = gfs2_glock_nq_num(sdp, | |
310 | GFS2_SB_LOCK, &gfs2_meta_glops, | |
311 | LM_ST_SHARED, 0, &sb_gh); | |
312 | if (error) { | |
313 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
314 | return error; | |
315 | } | |
316 | ||
317 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
318 | if (error) { | |
319 | fs_err(sdp, "can't read superblock: %d\n", error); | |
320 | goto out; | |
321 | } | |
322 | ||
323 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 324 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 325 | error = -EINVAL; |
b3b94faa DT |
326 | fs_err(sdp, "FS block size (%u) is too small for device " |
327 | "block size (%u)\n", | |
328 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
329 | goto out; | |
330 | } | |
331 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 332 | error = -EINVAL; |
b3b94faa DT |
333 | fs_err(sdp, "FS block size (%u) is too big for machine " |
334 | "page size (%u)\n", | |
335 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
336 | goto out; | |
337 | } | |
338 | ||
339 | /* Get rid of buffers from the original block size */ | |
340 | sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA); | |
341 | sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift; | |
342 | ||
343 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); | |
344 | ||
f42faf4f | 345 | /* Get the root inode */ |
419c93e0 SW |
346 | inum = &sdp->sd_sb.sb_root_dir; |
347 | if (sb->s_type == &gfs2meta_fs_type) | |
348 | inum = &sdp->sd_sb.sb_master_dir; | |
349 | inode = gfs2_lookup_root(sdp, inum); | |
c9fd4307 SW |
350 | if (IS_ERR(inode)) { |
351 | error = PTR_ERR(inode); | |
f42faf4f SW |
352 | fs_err(sdp, "can't read in root inode: %d\n", error); |
353 | goto out; | |
354 | } | |
b3b94faa | 355 | |
f42faf4f SW |
356 | sb->s_root = d_alloc_root(inode); |
357 | if (!sb->s_root) { | |
358 | fs_err(sdp, "can't get root dentry\n"); | |
359 | error = -ENOMEM; | |
c9fd4307 | 360 | iput(inode); |
f42faf4f | 361 | } |
f42faf4f | 362 | out: |
b3b94faa | 363 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
364 | return error; |
365 | } | |
366 | ||
367 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
368 | { | |
369 | struct gfs2_holder ji_gh; | |
370 | struct task_struct *p; | |
5c676f6d | 371 | struct gfs2_inode *ip; |
b3b94faa DT |
372 | int jindex = 1; |
373 | int error = 0; | |
374 | ||
375 | if (undo) { | |
376 | jindex = 0; | |
377 | goto fail_recoverd; | |
378 | } | |
379 | ||
c752666c SW |
380 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
381 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 382 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 383 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 384 | } |
5c676f6d SW |
385 | ip = sdp->sd_jindex->u.generic_ip; |
386 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
b3b94faa DT |
387 | |
388 | /* Load in the journal index special file */ | |
389 | ||
390 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
391 | if (error) { | |
392 | fs_err(sdp, "can't read journal index: %d\n", error); | |
393 | goto fail; | |
394 | } | |
395 | ||
396 | error = -EINVAL; | |
397 | if (!gfs2_jindex_size(sdp)) { | |
398 | fs_err(sdp, "no journals!\n"); | |
399 | goto fail_jindex; | |
400 | } | |
401 | ||
402 | if (sdp->sd_args.ar_spectator) { | |
403 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
404 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
405 | } else { | |
406 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
407 | fs_err(sdp, "can't mount journal #%u\n", | |
408 | sdp->sd_lockstruct.ls_jid); | |
409 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
410 | gfs2_jindex_size(sdp), | |
411 | gfs2_jindex_size(sdp) - 1); | |
412 | goto fail_jindex; | |
413 | } | |
414 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
415 | ||
416 | error = gfs2_glock_nq_num(sdp, | |
417 | sdp->sd_lockstruct.ls_jid, | |
418 | &gfs2_journal_glops, | |
419 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
420 | &sdp->sd_journal_gh); | |
421 | if (error) { | |
422 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
423 | goto fail_jindex; | |
424 | } | |
425 | ||
5c676f6d SW |
426 | ip = sdp->sd_jdesc->jd_inode->u.generic_ip; |
427 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
428 | LM_ST_SHARED, |
429 | LM_FLAG_NOEXP | GL_EXACT, | |
430 | &sdp->sd_jinode_gh); | |
431 | if (error) { | |
432 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
433 | error); | |
434 | goto fail_journal_gh; | |
435 | } | |
436 | ||
437 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
438 | if (error) { | |
439 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
440 | sdp->sd_jdesc->jd_jid, error); | |
441 | goto fail_jinode_gh; | |
442 | } | |
443 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
444 | } | |
445 | ||
446 | if (sdp->sd_lockstruct.ls_first) { | |
447 | unsigned int x; | |
448 | for (x = 0; x < sdp->sd_journals; x++) { | |
449 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), | |
450 | WAIT); | |
451 | if (error) { | |
452 | fs_err(sdp, "error recovering journal %u: %d\n", | |
453 | x, error); | |
454 | goto fail_jinode_gh; | |
455 | } | |
456 | } | |
457 | ||
458 | gfs2_lm_others_may_mount(sdp); | |
459 | } else if (!sdp->sd_args.ar_spectator) { | |
460 | error = gfs2_recover_journal(sdp->sd_jdesc, WAIT); | |
461 | if (error) { | |
462 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
463 | goto fail_jinode_gh; | |
464 | } | |
465 | } | |
466 | ||
467 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
468 | gfs2_glock_dq_uninit(&ji_gh); | |
469 | jindex = 0; | |
470 | ||
471 | /* Disown my Journal glock */ | |
472 | ||
473 | sdp->sd_journal_gh.gh_owner = NULL; | |
474 | sdp->sd_jinode_gh.gh_owner = NULL; | |
475 | ||
476 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); | |
477 | error = IS_ERR(p); | |
478 | if (error) { | |
479 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
480 | goto fail_jinode_gh; | |
481 | } | |
482 | sdp->sd_recoverd_process = p; | |
483 | ||
484 | return 0; | |
485 | ||
486 | fail_recoverd: | |
487 | kthread_stop(sdp->sd_recoverd_process); | |
488 | ||
489 | fail_jinode_gh: | |
490 | if (!sdp->sd_args.ar_spectator) | |
491 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
492 | ||
493 | fail_journal_gh: | |
494 | if (!sdp->sd_args.ar_spectator) | |
495 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
496 | ||
497 | fail_jindex: | |
498 | gfs2_jindex_free(sdp); | |
499 | if (jindex) | |
500 | gfs2_glock_dq_uninit(&ji_gh); | |
501 | ||
502 | fail: | |
f42faf4f | 503 | iput(sdp->sd_jindex); |
b3b94faa DT |
504 | |
505 | return error; | |
506 | } | |
507 | ||
b3b94faa DT |
508 | |
509 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
510 | { | |
b3b94faa | 511 | int error = 0; |
5c676f6d | 512 | struct gfs2_inode *ip; |
c9fd4307 | 513 | struct inode *inode; |
b3b94faa DT |
514 | |
515 | if (undo) | |
f42faf4f SW |
516 | goto fail_qinode; |
517 | ||
c9fd4307 SW |
518 | inode = gfs2_lookup_root(sdp, &sdp->sd_sb.sb_master_dir); |
519 | if (IS_ERR(inode)) { | |
520 | error = PTR_ERR(inode); | |
f42faf4f SW |
521 | fs_err(sdp, "can't read in master directory: %d\n", error); |
522 | goto fail; | |
523 | } | |
c9fd4307 | 524 | sdp->sd_master_dir = inode; |
f42faf4f SW |
525 | |
526 | error = init_journal(sdp, undo); | |
527 | if (error) | |
528 | goto fail_master; | |
b3b94faa DT |
529 | |
530 | /* Read in the master inode number inode */ | |
c752666c SW |
531 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
532 | if (IS_ERR(sdp->sd_inum_inode)) { | |
533 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 534 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 535 | goto fail_journal; |
b3b94faa DT |
536 | } |
537 | ||
f42faf4f | 538 | |
b3b94faa | 539 | /* Read in the master statfs inode */ |
c752666c SW |
540 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
541 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
542 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 543 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 544 | goto fail_inum; |
b3b94faa DT |
545 | } |
546 | ||
547 | /* Read in the resource index inode */ | |
c752666c SW |
548 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
549 | if (IS_ERR(sdp->sd_rindex)) { | |
550 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
551 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
552 | goto fail_statfs; | |
553 | } | |
5c676f6d SW |
554 | ip = sdp->sd_rindex->u.generic_ip; |
555 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
556 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
557 | |
558 | /* Read in the quota inode */ | |
c752666c SW |
559 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
560 | if (IS_ERR(sdp->sd_quota_inode)) { | |
561 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
562 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
563 | goto fail_rindex; | |
564 | } | |
b3b94faa DT |
565 | return 0; |
566 | ||
f42faf4f SW |
567 | fail_qinode: |
568 | iput(sdp->sd_quota_inode); | |
b3b94faa | 569 | |
f42faf4f | 570 | fail_rindex: |
b3b94faa | 571 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 572 | iput(sdp->sd_rindex); |
b3b94faa | 573 | |
f42faf4f SW |
574 | fail_statfs: |
575 | iput(sdp->sd_statfs_inode); | |
b3b94faa | 576 | |
f42faf4f SW |
577 | fail_inum: |
578 | iput(sdp->sd_inum_inode); | |
579 | fail_journal: | |
580 | init_journal(sdp, UNDO); | |
581 | fail_master: | |
582 | iput(sdp->sd_master_dir); | |
583 | fail: | |
b3b94faa DT |
584 | return error; |
585 | } | |
586 | ||
587 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
588 | { | |
f42faf4f | 589 | struct inode *pn = NULL; |
b3b94faa DT |
590 | char buf[30]; |
591 | int error = 0; | |
5c676f6d | 592 | struct gfs2_inode *ip; |
b3b94faa DT |
593 | |
594 | if (sdp->sd_args.ar_spectator) | |
595 | return 0; | |
596 | ||
597 | if (undo) | |
598 | goto fail_qc_gh; | |
599 | ||
c752666c SW |
600 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
601 | if (IS_ERR(pn)) { | |
602 | error = PTR_ERR(pn); | |
b3b94faa DT |
603 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
604 | return error; | |
605 | } | |
606 | ||
607 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
608 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
609 | if (IS_ERR(sdp->sd_ir_inode)) { | |
610 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
611 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
612 | goto fail; | |
613 | } | |
614 | ||
615 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
616 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
617 | if (IS_ERR(sdp->sd_sc_inode)) { | |
618 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
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); | |
c752666c SW |
624 | sdp->sd_ut_inode = gfs2_lookup_simple(pn, buf); |
625 | if (IS_ERR(sdp->sd_ut_inode)) { | |
626 | error = PTR_ERR(sdp->sd_ut_inode); | |
b3b94faa DT |
627 | fs_err(sdp, "can't find local \"ut\" file: %d\n", error); |
628 | goto fail_sc_i; | |
629 | } | |
630 | ||
631 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
632 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
633 | if (IS_ERR(sdp->sd_qc_inode)) { | |
634 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
635 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
636 | goto fail_ut_i; | |
637 | } | |
638 | ||
f42faf4f | 639 | iput(pn); |
b3b94faa DT |
640 | pn = NULL; |
641 | ||
5c676f6d SW |
642 | ip = sdp->sd_ir_inode->u.generic_ip; |
643 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
644 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
645 | &sdp->sd_ir_gh); | |
646 | if (error) { | |
647 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
648 | goto fail_qc_i; | |
649 | } | |
650 | ||
5c676f6d SW |
651 | ip = sdp->sd_sc_inode->u.generic_ip; |
652 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
653 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
654 | &sdp->sd_sc_gh); | |
655 | if (error) { | |
656 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
657 | goto fail_ir_gh; | |
658 | } | |
659 | ||
5c676f6d SW |
660 | ip = sdp->sd_ut_inode->u.generic_ip; |
661 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
662 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
663 | &sdp->sd_ut_gh); | |
664 | if (error) { | |
665 | fs_err(sdp, "can't lock local \"ut\" file: %d\n", error); | |
666 | goto fail_sc_gh; | |
667 | } | |
668 | ||
5c676f6d SW |
669 | ip = sdp->sd_qc_inode->u.generic_ip; |
670 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
671 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
672 | &sdp->sd_qc_gh); | |
673 | if (error) { | |
674 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
675 | goto fail_ut_gh; | |
676 | } | |
677 | ||
678 | return 0; | |
679 | ||
680 | fail_qc_gh: | |
681 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
682 | ||
683 | fail_ut_gh: | |
684 | gfs2_glock_dq_uninit(&sdp->sd_ut_gh); | |
685 | ||
686 | fail_sc_gh: | |
687 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
688 | ||
689 | fail_ir_gh: | |
690 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); | |
691 | ||
692 | fail_qc_i: | |
f42faf4f | 693 | iput(sdp->sd_qc_inode); |
b3b94faa DT |
694 | |
695 | fail_ut_i: | |
f42faf4f | 696 | iput(sdp->sd_ut_inode); |
b3b94faa DT |
697 | |
698 | fail_sc_i: | |
f42faf4f | 699 | iput(sdp->sd_sc_inode); |
b3b94faa DT |
700 | |
701 | fail_ir_i: | |
f42faf4f | 702 | iput(sdp->sd_ir_inode); |
b3b94faa DT |
703 | |
704 | fail: | |
705 | if (pn) | |
f42faf4f | 706 | iput(pn); |
b3b94faa DT |
707 | return error; |
708 | } | |
709 | ||
710 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
711 | { | |
712 | struct task_struct *p; | |
713 | int error = 0; | |
714 | ||
715 | if (undo) | |
716 | goto fail_inoded; | |
717 | ||
718 | sdp->sd_log_flush_time = jiffies; | |
719 | sdp->sd_jindex_refresh_time = jiffies; | |
720 | ||
721 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
722 | error = IS_ERR(p); | |
723 | if (error) { | |
724 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
725 | return error; | |
726 | } | |
727 | sdp->sd_logd_process = p; | |
728 | ||
729 | sdp->sd_statfs_sync_time = jiffies; | |
730 | sdp->sd_quota_sync_time = jiffies; | |
731 | ||
732 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
733 | error = IS_ERR(p); | |
734 | if (error) { | |
735 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
736 | goto fail; | |
737 | } | |
738 | sdp->sd_quotad_process = p; | |
739 | ||
740 | p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded"); | |
741 | error = IS_ERR(p); | |
742 | if (error) { | |
743 | fs_err(sdp, "can't start inoded thread: %d\n", error); | |
744 | goto fail_quotad; | |
745 | } | |
746 | sdp->sd_inoded_process = p; | |
747 | ||
748 | return 0; | |
749 | ||
750 | fail_inoded: | |
751 | kthread_stop(sdp->sd_inoded_process); | |
752 | ||
753 | fail_quotad: | |
754 | kthread_stop(sdp->sd_quotad_process); | |
755 | ||
756 | fail: | |
757 | kthread_stop(sdp->sd_logd_process); | |
758 | ||
759 | return error; | |
760 | } | |
761 | ||
762 | /** | |
763 | * fill_super - Read in superblock | |
764 | * @sb: The VFS superblock | |
765 | * @data: Mount options | |
766 | * @silent: Don't complain if it's not a GFS2 filesystem | |
767 | * | |
768 | * Returns: errno | |
769 | */ | |
770 | ||
771 | static int fill_super(struct super_block *sb, void *data, int silent) | |
772 | { | |
773 | struct gfs2_sbd *sdp; | |
774 | struct gfs2_holder mount_gh; | |
775 | int error; | |
776 | ||
777 | sdp = init_sbd(sb); | |
778 | if (!sdp) { | |
d92a8d48 | 779 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
780 | return -ENOMEM; |
781 | } | |
782 | ||
783 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
784 | if (error) { | |
d92a8d48 | 785 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
786 | goto fail; |
787 | } | |
788 | ||
419c93e0 SW |
789 | init_vfs(sb, SDF_NOATIME); |
790 | ||
791 | /* Set up the buffer cache and fill in some fake block size values | |
792 | to allow us to read-in the on-disk superblock. */ | |
793 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
794 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
795 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
796 | GFS2_BASIC_BLOCK_SHIFT; | |
797 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
798 | |
799 | error = init_names(sdp, silent); | |
800 | if (error) | |
801 | goto fail; | |
802 | ||
803 | error = gfs2_sys_fs_add(sdp); | |
804 | if (error) | |
805 | goto fail; | |
806 | ||
807 | error = gfs2_lm_mount(sdp, silent); | |
808 | if (error) | |
809 | goto fail_sys; | |
810 | ||
811 | error = init_locking(sdp, &mount_gh, DO); | |
812 | if (error) | |
813 | goto fail_lm; | |
814 | ||
815 | error = init_sb(sdp, silent, DO); | |
816 | if (error) | |
817 | goto fail_locking; | |
b3b94faa DT |
818 | |
819 | error = init_inodes(sdp, DO); | |
820 | if (error) | |
f42faf4f | 821 | goto fail_sb; |
b3b94faa DT |
822 | |
823 | error = init_per_node(sdp, DO); | |
824 | if (error) | |
825 | goto fail_inodes; | |
826 | ||
827 | error = gfs2_statfs_init(sdp); | |
828 | if (error) { | |
829 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
830 | goto fail_per_node; | |
831 | } | |
832 | ||
833 | error = init_threads(sdp, DO); | |
834 | if (error) | |
835 | goto fail_per_node; | |
836 | ||
837 | if (!(sb->s_flags & MS_RDONLY)) { | |
838 | error = gfs2_make_fs_rw(sdp); | |
839 | if (error) { | |
840 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
841 | goto fail_threads; | |
842 | } | |
843 | } | |
844 | ||
845 | gfs2_glock_dq_uninit(&mount_gh); | |
846 | ||
847 | return 0; | |
848 | ||
849 | fail_threads: | |
850 | init_threads(sdp, UNDO); | |
851 | ||
852 | fail_per_node: | |
853 | init_per_node(sdp, UNDO); | |
854 | ||
855 | fail_inodes: | |
856 | init_inodes(sdp, UNDO); | |
857 | ||
b3b94faa DT |
858 | fail_sb: |
859 | init_sb(sdp, 0, UNDO); | |
860 | ||
861 | fail_locking: | |
862 | init_locking(sdp, &mount_gh, UNDO); | |
863 | ||
864 | fail_lm: | |
865 | gfs2_gl_hash_clear(sdp, WAIT); | |
866 | gfs2_lm_unmount(sdp); | |
867 | while (invalidate_inodes(sb)) | |
868 | yield(); | |
869 | ||
870 | fail_sys: | |
871 | gfs2_sys_fs_del(sdp); | |
872 | ||
873 | fail: | |
874 | vfree(sdp); | |
5c676f6d | 875 | sb->s_fs_info = NULL; |
b3b94faa DT |
876 | |
877 | return error; | |
878 | } | |
879 | ||
880 | static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, | |
881 | int flags, const char *dev_name, | |
882 | void *data) | |
883 | { | |
884 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); | |
885 | } | |
886 | ||
419c93e0 SW |
887 | static void gfs2_kill_sb(struct super_block *sb) |
888 | { | |
889 | kill_block_super(sb); | |
890 | } | |
891 | ||
b3b94faa DT |
892 | struct file_system_type gfs2_fs_type = { |
893 | .name = "gfs2", | |
894 | .fs_flags = FS_REQUIRES_DEV, | |
895 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
896 | .kill_sb = gfs2_kill_sb, |
897 | .owner = THIS_MODULE, | |
898 | }; | |
899 | ||
900 | struct file_system_type gfs2meta_fs_type = { | |
901 | .name = "gfs2meta", | |
902 | .fs_flags = FS_REQUIRES_DEV, | |
903 | .get_sb = gfs2_get_sb, | |
904 | .kill_sb = gfs2_kill_sb, | |
b3b94faa DT |
905 | .owner = THIS_MODULE, |
906 | }; | |
907 |