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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 | |
20 | #include "gfs2.h" | |
5c676f6d SW |
21 | #include "lm_interface.h" |
22 | #include "incore.h" | |
b3b94faa DT |
23 | #include "daemon.h" |
24 | #include "glock.h" | |
25 | #include "glops.h" | |
26 | #include "inode.h" | |
27 | #include "lm.h" | |
28 | #include "mount.h" | |
29 | #include "ops_export.h" | |
30 | #include "ops_fstype.h" | |
31 | #include "ops_super.h" | |
32 | #include "recovery.h" | |
33 | #include "rgrp.h" | |
34 | #include "super.h" | |
35 | #include "unlinked.h" | |
36 | #include "sys.h" | |
5c676f6d | 37 | #include "util.h" |
b3b94faa DT |
38 | |
39 | #define DO 0 | |
40 | #define UNDO 1 | |
41 | ||
5bb76af1 RP |
42 | extern struct dentry_operations gfs2_dops; |
43 | ||
b3b94faa DT |
44 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
45 | { | |
46 | struct gfs2_sbd *sdp; | |
47 | unsigned int x; | |
48 | ||
49 | sdp = vmalloc(sizeof(struct gfs2_sbd)); | |
50 | if (!sdp) | |
51 | return NULL; | |
52 | ||
53 | memset(sdp, 0, sizeof(struct gfs2_sbd)); | |
54 | ||
5c676f6d | 55 | sb->s_fs_info = sdp; |
b3b94faa DT |
56 | sdp->sd_vfs = sb; |
57 | ||
58 | gfs2_tune_init(&sdp->sd_tune); | |
59 | ||
60 | for (x = 0; x < GFS2_GL_HASH_SIZE; x++) { | |
61 | sdp->sd_gl_hash[x].hb_lock = RW_LOCK_UNLOCKED; | |
62 | INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list); | |
63 | } | |
64 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); | |
65 | spin_lock_init(&sdp->sd_reclaim_lock); | |
66 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
f55ab26a | 67 | mutex_init(&sdp->sd_invalidate_inodes_mutex); |
b3b94faa | 68 | |
f55ab26a | 69 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 70 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 71 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
72 | |
73 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 74 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
75 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
76 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
77 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
78 | ||
79 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
80 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 81 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa DT |
82 | |
83 | INIT_LIST_HEAD(&sdp->sd_unlinked_list); | |
84 | spin_lock_init(&sdp->sd_unlinked_spin); | |
f55ab26a | 85 | mutex_init(&sdp->sd_unlinked_mutex); |
b3b94faa DT |
86 | |
87 | INIT_LIST_HEAD(&sdp->sd_quota_list); | |
88 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 89 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
90 | |
91 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa DT |
92 | |
93 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
94 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
95 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
96 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
97 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
98 | ||
71b86f56 | 99 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
100 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
101 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
102 | ||
484adff8 | 103 | init_rwsem(&sdp->sd_log_flush_lock); |
b3b94faa DT |
104 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
105 | ||
106 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
107 | ||
f55ab26a | 108 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
109 | |
110 | return sdp; | |
111 | } | |
112 | ||
419c93e0 | 113 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 114 | { |
419c93e0 | 115 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
116 | |
117 | sb->s_magic = GFS2_MAGIC; | |
118 | sb->s_op = &gfs2_super_ops; | |
119 | sb->s_export_op = &gfs2_export_ops; | |
120 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
121 | ||
122 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 123 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
124 | |
125 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
126 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
127 | } |
128 | ||
129 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
130 | { | |
131 | struct gfs2_sb *sb = NULL; | |
132 | char *proto, *table; | |
133 | int error = 0; | |
134 | ||
135 | proto = sdp->sd_args.ar_lockproto; | |
136 | table = sdp->sd_args.ar_locktable; | |
137 | ||
138 | /* Try to autodetect */ | |
139 | ||
140 | if (!proto[0] || !table[0]) { | |
141 | struct buffer_head *bh; | |
142 | bh = sb_getblk(sdp->sd_vfs, | |
143 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
144 | lock_buffer(bh); | |
145 | clear_buffer_uptodate(bh); | |
146 | clear_buffer_dirty(bh); | |
147 | unlock_buffer(bh); | |
148 | ll_rw_block(READ, 1, &bh); | |
149 | wait_on_buffer(bh); | |
150 | ||
151 | if (!buffer_uptodate(bh)) { | |
152 | brelse(bh); | |
153 | return -EIO; | |
154 | } | |
155 | ||
156 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); | |
157 | if (!sb) { | |
158 | brelse(bh); | |
159 | return -ENOMEM; | |
160 | } | |
161 | gfs2_sb_in(sb, bh->b_data); | |
162 | brelse(bh); | |
163 | ||
164 | error = gfs2_check_sb(sdp, sb, silent); | |
165 | if (error) | |
166 | goto out; | |
167 | ||
168 | if (!proto[0]) | |
169 | proto = sb->sb_lockproto; | |
170 | if (!table[0]) | |
171 | table = sb->sb_locktable; | |
172 | } | |
173 | ||
174 | if (!table[0]) | |
175 | table = sdp->sd_vfs->s_id; | |
176 | ||
177 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
178 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
179 | ||
180 | out: | |
181 | kfree(sb); | |
182 | ||
183 | return error; | |
184 | } | |
185 | ||
186 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
187 | int undo) | |
188 | { | |
189 | struct task_struct *p; | |
190 | int error = 0; | |
191 | ||
192 | if (undo) | |
193 | goto fail_trans; | |
194 | ||
195 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
196 | error = IS_ERR(p); | |
197 | if (error) { | |
198 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
199 | return error; | |
200 | } | |
201 | sdp->sd_scand_process = p; | |
202 | ||
203 | for (sdp->sd_glockd_num = 0; | |
204 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
205 | sdp->sd_glockd_num++) { | |
206 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
207 | error = IS_ERR(p); | |
208 | if (error) { | |
209 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
210 | goto fail; | |
211 | } | |
212 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
213 | } | |
214 | ||
215 | error = gfs2_glock_nq_num(sdp, | |
216 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
217 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
218 | mount_gh); | |
219 | if (error) { | |
220 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
221 | goto fail; | |
222 | } | |
223 | ||
224 | error = gfs2_glock_nq_num(sdp, | |
225 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
226 | LM_ST_SHARED, | |
579b78a4 | 227 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
228 | &sdp->sd_live_gh); |
229 | if (error) { | |
230 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
231 | goto fail_mount; | |
232 | } | |
233 | ||
234 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
235 | CREATE, &sdp->sd_rename_gl); | |
236 | if (error) { | |
237 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
238 | goto fail_live; | |
239 | } | |
240 | ||
241 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
242 | CREATE, &sdp->sd_trans_gl); | |
243 | if (error) { | |
244 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
245 | goto fail_rename; | |
246 | } | |
247 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
248 | ||
249 | return 0; | |
250 | ||
251 | fail_trans: | |
252 | gfs2_glock_put(sdp->sd_trans_gl); | |
253 | ||
254 | fail_rename: | |
255 | gfs2_glock_put(sdp->sd_rename_gl); | |
256 | ||
257 | fail_live: | |
258 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
259 | ||
260 | fail_mount: | |
261 | gfs2_glock_dq_uninit(mount_gh); | |
262 | ||
263 | fail: | |
264 | while (sdp->sd_glockd_num--) | |
265 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
266 | ||
267 | kthread_stop(sdp->sd_scand_process); | |
268 | ||
269 | return error; | |
270 | } | |
271 | ||
c9fd4307 SW |
272 | static struct inode *gfs2_lookup_root(struct gfs2_sbd *sdp, |
273 | const struct gfs2_inum *inum) | |
f42faf4f SW |
274 | { |
275 | int error; | |
276 | struct gfs2_glock *gl; | |
277 | struct gfs2_inode *ip; | |
c9fd4307 | 278 | struct inode *inode; |
f42faf4f | 279 | |
b09e593d SW |
280 | error = gfs2_glock_get(sdp, inum->no_addr, &gfs2_inode_glops, |
281 | CREATE, &gl); | |
f42faf4f | 282 | if (!error) { |
419c93e0 | 283 | error = gfs2_inode_get(gl, inum, CREATE, &ip); |
f42faf4f | 284 | if (!error) { |
419c93e0 | 285 | gfs2_inode_min_init(ip, DT_DIR); |
c9fd4307 | 286 | inode = gfs2_ip2v(ip); |
f42faf4f | 287 | gfs2_inode_put(ip); |
419c93e0 | 288 | gfs2_glock_put(gl); |
c9fd4307 | 289 | return inode; |
f42faf4f SW |
290 | } |
291 | gfs2_glock_put(gl); | |
292 | } | |
c9fd4307 | 293 | return ERR_PTR(error); |
f42faf4f SW |
294 | } |
295 | ||
b3b94faa DT |
296 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
297 | { | |
298 | struct super_block *sb = sdp->sd_vfs; | |
299 | struct gfs2_holder sb_gh; | |
419c93e0 | 300 | struct gfs2_inum *inum; |
f42faf4f | 301 | struct inode *inode; |
b3b94faa DT |
302 | int error = 0; |
303 | ||
304 | if (undo) { | |
b3b94faa DT |
305 | return 0; |
306 | } | |
307 | ||
308 | error = gfs2_glock_nq_num(sdp, | |
309 | GFS2_SB_LOCK, &gfs2_meta_glops, | |
310 | LM_ST_SHARED, 0, &sb_gh); | |
311 | if (error) { | |
312 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
313 | return error; | |
314 | } | |
315 | ||
316 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
317 | if (error) { | |
318 | fs_err(sdp, "can't read superblock: %d\n", error); | |
319 | goto out; | |
320 | } | |
321 | ||
322 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 323 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 324 | error = -EINVAL; |
b3b94faa DT |
325 | fs_err(sdp, "FS block size (%u) is too small for device " |
326 | "block size (%u)\n", | |
327 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
328 | goto out; | |
329 | } | |
330 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 331 | error = -EINVAL; |
b3b94faa DT |
332 | fs_err(sdp, "FS block size (%u) is too big for machine " |
333 | "page size (%u)\n", | |
334 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
335 | goto out; | |
336 | } | |
337 | ||
338 | /* Get rid of buffers from the original block size */ | |
339 | sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA); | |
340 | sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift; | |
341 | ||
342 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); | |
343 | ||
f42faf4f | 344 | /* Get the root inode */ |
419c93e0 SW |
345 | inum = &sdp->sd_sb.sb_root_dir; |
346 | if (sb->s_type == &gfs2meta_fs_type) | |
347 | inum = &sdp->sd_sb.sb_master_dir; | |
348 | inode = gfs2_lookup_root(sdp, inum); | |
c9fd4307 SW |
349 | if (IS_ERR(inode)) { |
350 | error = PTR_ERR(inode); | |
f42faf4f SW |
351 | fs_err(sdp, "can't read in root inode: %d\n", error); |
352 | goto out; | |
353 | } | |
b3b94faa | 354 | |
f42faf4f SW |
355 | sb->s_root = d_alloc_root(inode); |
356 | if (!sb->s_root) { | |
357 | fs_err(sdp, "can't get root dentry\n"); | |
358 | error = -ENOMEM; | |
c9fd4307 | 359 | iput(inode); |
f42faf4f | 360 | } |
5bb76af1 | 361 | sb->s_root->d_op = &gfs2_dops; |
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++) { | |
c63e31c2 | 449 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
450 | if (error) { |
451 | fs_err(sdp, "error recovering journal %u: %d\n", | |
452 | x, error); | |
453 | goto fail_jinode_gh; | |
454 | } | |
455 | } | |
456 | ||
457 | gfs2_lm_others_may_mount(sdp); | |
458 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 459 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
460 | if (error) { |
461 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
462 | goto fail_jinode_gh; | |
463 | } | |
464 | } | |
465 | ||
466 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
467 | gfs2_glock_dq_uninit(&ji_gh); | |
468 | jindex = 0; | |
469 | ||
b3b94faa DT |
470 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
471 | error = IS_ERR(p); | |
472 | if (error) { | |
473 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
474 | goto fail_jinode_gh; | |
475 | } | |
476 | sdp->sd_recoverd_process = p; | |
477 | ||
478 | return 0; | |
479 | ||
480 | fail_recoverd: | |
481 | kthread_stop(sdp->sd_recoverd_process); | |
482 | ||
483 | fail_jinode_gh: | |
484 | if (!sdp->sd_args.ar_spectator) | |
485 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
486 | ||
487 | fail_journal_gh: | |
488 | if (!sdp->sd_args.ar_spectator) | |
489 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
490 | ||
491 | fail_jindex: | |
492 | gfs2_jindex_free(sdp); | |
493 | if (jindex) | |
494 | gfs2_glock_dq_uninit(&ji_gh); | |
495 | ||
496 | fail: | |
f42faf4f | 497 | iput(sdp->sd_jindex); |
b3b94faa DT |
498 | |
499 | return error; | |
500 | } | |
501 | ||
b3b94faa DT |
502 | |
503 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
504 | { | |
b3b94faa | 505 | int error = 0; |
5c676f6d | 506 | struct gfs2_inode *ip; |
c9fd4307 | 507 | struct inode *inode; |
b3b94faa DT |
508 | |
509 | if (undo) | |
f42faf4f SW |
510 | goto fail_qinode; |
511 | ||
c9fd4307 SW |
512 | inode = gfs2_lookup_root(sdp, &sdp->sd_sb.sb_master_dir); |
513 | if (IS_ERR(inode)) { | |
514 | error = PTR_ERR(inode); | |
f42faf4f SW |
515 | fs_err(sdp, "can't read in master directory: %d\n", error); |
516 | goto fail; | |
517 | } | |
c9fd4307 | 518 | sdp->sd_master_dir = inode; |
f42faf4f SW |
519 | |
520 | error = init_journal(sdp, undo); | |
521 | if (error) | |
522 | goto fail_master; | |
b3b94faa DT |
523 | |
524 | /* Read in the master inode number inode */ | |
c752666c SW |
525 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
526 | if (IS_ERR(sdp->sd_inum_inode)) { | |
527 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 528 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 529 | goto fail_journal; |
b3b94faa DT |
530 | } |
531 | ||
f42faf4f | 532 | |
b3b94faa | 533 | /* Read in the master statfs inode */ |
c752666c SW |
534 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
535 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
536 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 537 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 538 | goto fail_inum; |
b3b94faa DT |
539 | } |
540 | ||
541 | /* Read in the resource index inode */ | |
c752666c SW |
542 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
543 | if (IS_ERR(sdp->sd_rindex)) { | |
544 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
545 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
546 | goto fail_statfs; | |
547 | } | |
5c676f6d SW |
548 | ip = sdp->sd_rindex->u.generic_ip; |
549 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
550 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
551 | |
552 | /* Read in the quota inode */ | |
c752666c SW |
553 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
554 | if (IS_ERR(sdp->sd_quota_inode)) { | |
555 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
556 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
557 | goto fail_rindex; | |
558 | } | |
b3b94faa DT |
559 | return 0; |
560 | ||
f42faf4f SW |
561 | fail_qinode: |
562 | iput(sdp->sd_quota_inode); | |
b3b94faa | 563 | |
f42faf4f | 564 | fail_rindex: |
b3b94faa | 565 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 566 | iput(sdp->sd_rindex); |
b3b94faa | 567 | |
f42faf4f SW |
568 | fail_statfs: |
569 | iput(sdp->sd_statfs_inode); | |
b3b94faa | 570 | |
f42faf4f SW |
571 | fail_inum: |
572 | iput(sdp->sd_inum_inode); | |
573 | fail_journal: | |
574 | init_journal(sdp, UNDO); | |
575 | fail_master: | |
576 | iput(sdp->sd_master_dir); | |
577 | fail: | |
b3b94faa DT |
578 | return error; |
579 | } | |
580 | ||
581 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
582 | { | |
f42faf4f | 583 | struct inode *pn = NULL; |
b3b94faa DT |
584 | char buf[30]; |
585 | int error = 0; | |
5c676f6d | 586 | struct gfs2_inode *ip; |
b3b94faa DT |
587 | |
588 | if (sdp->sd_args.ar_spectator) | |
589 | return 0; | |
590 | ||
591 | if (undo) | |
592 | goto fail_qc_gh; | |
593 | ||
c752666c SW |
594 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
595 | if (IS_ERR(pn)) { | |
596 | error = PTR_ERR(pn); | |
b3b94faa DT |
597 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
598 | return error; | |
599 | } | |
600 | ||
601 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
602 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
603 | if (IS_ERR(sdp->sd_ir_inode)) { | |
604 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
605 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
606 | goto fail; | |
607 | } | |
608 | ||
609 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
610 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
611 | if (IS_ERR(sdp->sd_sc_inode)) { | |
612 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
613 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
614 | goto fail_ir_i; | |
615 | } | |
616 | ||
617 | sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
618 | sdp->sd_ut_inode = gfs2_lookup_simple(pn, buf); |
619 | if (IS_ERR(sdp->sd_ut_inode)) { | |
620 | error = PTR_ERR(sdp->sd_ut_inode); | |
b3b94faa DT |
621 | fs_err(sdp, "can't find local \"ut\" file: %d\n", error); |
622 | goto fail_sc_i; | |
623 | } | |
624 | ||
625 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
626 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
627 | if (IS_ERR(sdp->sd_qc_inode)) { | |
628 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
629 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
630 | goto fail_ut_i; | |
631 | } | |
632 | ||
f42faf4f | 633 | iput(pn); |
b3b94faa DT |
634 | pn = NULL; |
635 | ||
5c676f6d SW |
636 | ip = sdp->sd_ir_inode->u.generic_ip; |
637 | error = gfs2_glock_nq_init(ip->i_gl, | |
579b78a4 | 638 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
639 | &sdp->sd_ir_gh); |
640 | if (error) { | |
641 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
642 | goto fail_qc_i; | |
643 | } | |
644 | ||
5c676f6d SW |
645 | ip = sdp->sd_sc_inode->u.generic_ip; |
646 | error = gfs2_glock_nq_init(ip->i_gl, | |
579b78a4 | 647 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
648 | &sdp->sd_sc_gh); |
649 | if (error) { | |
650 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
651 | goto fail_ir_gh; | |
652 | } | |
653 | ||
5c676f6d SW |
654 | ip = sdp->sd_ut_inode->u.generic_ip; |
655 | error = gfs2_glock_nq_init(ip->i_gl, | |
579b78a4 | 656 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
657 | &sdp->sd_ut_gh); |
658 | if (error) { | |
659 | fs_err(sdp, "can't lock local \"ut\" file: %d\n", error); | |
660 | goto fail_sc_gh; | |
661 | } | |
662 | ||
5c676f6d SW |
663 | ip = sdp->sd_qc_inode->u.generic_ip; |
664 | error = gfs2_glock_nq_init(ip->i_gl, | |
579b78a4 | 665 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
666 | &sdp->sd_qc_gh); |
667 | if (error) { | |
668 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
669 | goto fail_ut_gh; | |
670 | } | |
671 | ||
672 | return 0; | |
673 | ||
674 | fail_qc_gh: | |
675 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
676 | ||
677 | fail_ut_gh: | |
678 | gfs2_glock_dq_uninit(&sdp->sd_ut_gh); | |
679 | ||
680 | fail_sc_gh: | |
681 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
682 | ||
683 | fail_ir_gh: | |
684 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); | |
685 | ||
686 | fail_qc_i: | |
f42faf4f | 687 | iput(sdp->sd_qc_inode); |
b3b94faa DT |
688 | |
689 | fail_ut_i: | |
f42faf4f | 690 | iput(sdp->sd_ut_inode); |
b3b94faa DT |
691 | |
692 | fail_sc_i: | |
f42faf4f | 693 | iput(sdp->sd_sc_inode); |
b3b94faa DT |
694 | |
695 | fail_ir_i: | |
f42faf4f | 696 | iput(sdp->sd_ir_inode); |
b3b94faa DT |
697 | |
698 | fail: | |
699 | if (pn) | |
f42faf4f | 700 | iput(pn); |
b3b94faa DT |
701 | return error; |
702 | } | |
703 | ||
704 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
705 | { | |
706 | struct task_struct *p; | |
707 | int error = 0; | |
708 | ||
709 | if (undo) | |
710 | goto fail_inoded; | |
711 | ||
712 | sdp->sd_log_flush_time = jiffies; | |
713 | sdp->sd_jindex_refresh_time = jiffies; | |
714 | ||
715 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
716 | error = IS_ERR(p); | |
717 | if (error) { | |
718 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
719 | return error; | |
720 | } | |
721 | sdp->sd_logd_process = p; | |
722 | ||
723 | sdp->sd_statfs_sync_time = jiffies; | |
724 | sdp->sd_quota_sync_time = jiffies; | |
725 | ||
726 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
727 | error = IS_ERR(p); | |
728 | if (error) { | |
729 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
730 | goto fail; | |
731 | } | |
732 | sdp->sd_quotad_process = p; | |
733 | ||
734 | p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded"); | |
735 | error = IS_ERR(p); | |
736 | if (error) { | |
737 | fs_err(sdp, "can't start inoded thread: %d\n", error); | |
738 | goto fail_quotad; | |
739 | } | |
740 | sdp->sd_inoded_process = p; | |
741 | ||
742 | return 0; | |
743 | ||
744 | fail_inoded: | |
745 | kthread_stop(sdp->sd_inoded_process); | |
746 | ||
747 | fail_quotad: | |
748 | kthread_stop(sdp->sd_quotad_process); | |
749 | ||
750 | fail: | |
751 | kthread_stop(sdp->sd_logd_process); | |
752 | ||
753 | return error; | |
754 | } | |
755 | ||
756 | /** | |
757 | * fill_super - Read in superblock | |
758 | * @sb: The VFS superblock | |
759 | * @data: Mount options | |
760 | * @silent: Don't complain if it's not a GFS2 filesystem | |
761 | * | |
762 | * Returns: errno | |
763 | */ | |
764 | ||
765 | static int fill_super(struct super_block *sb, void *data, int silent) | |
766 | { | |
767 | struct gfs2_sbd *sdp; | |
768 | struct gfs2_holder mount_gh; | |
769 | int error; | |
770 | ||
771 | sdp = init_sbd(sb); | |
772 | if (!sdp) { | |
d92a8d48 | 773 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
774 | return -ENOMEM; |
775 | } | |
776 | ||
777 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
778 | if (error) { | |
d92a8d48 | 779 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
780 | goto fail; |
781 | } | |
782 | ||
419c93e0 SW |
783 | init_vfs(sb, SDF_NOATIME); |
784 | ||
785 | /* Set up the buffer cache and fill in some fake block size values | |
786 | to allow us to read-in the on-disk superblock. */ | |
787 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
788 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
789 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
790 | GFS2_BASIC_BLOCK_SHIFT; | |
791 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
792 | |
793 | error = init_names(sdp, silent); | |
794 | if (error) | |
795 | goto fail; | |
796 | ||
797 | error = gfs2_sys_fs_add(sdp); | |
798 | if (error) | |
799 | goto fail; | |
800 | ||
801 | error = gfs2_lm_mount(sdp, silent); | |
802 | if (error) | |
803 | goto fail_sys; | |
804 | ||
805 | error = init_locking(sdp, &mount_gh, DO); | |
806 | if (error) | |
807 | goto fail_lm; | |
808 | ||
809 | error = init_sb(sdp, silent, DO); | |
810 | if (error) | |
811 | goto fail_locking; | |
b3b94faa DT |
812 | |
813 | error = init_inodes(sdp, DO); | |
814 | if (error) | |
f42faf4f | 815 | goto fail_sb; |
b3b94faa DT |
816 | |
817 | error = init_per_node(sdp, DO); | |
818 | if (error) | |
819 | goto fail_inodes; | |
820 | ||
821 | error = gfs2_statfs_init(sdp); | |
822 | if (error) { | |
823 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
824 | goto fail_per_node; | |
825 | } | |
826 | ||
827 | error = init_threads(sdp, DO); | |
828 | if (error) | |
829 | goto fail_per_node; | |
830 | ||
831 | if (!(sb->s_flags & MS_RDONLY)) { | |
832 | error = gfs2_make_fs_rw(sdp); | |
833 | if (error) { | |
834 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
835 | goto fail_threads; | |
836 | } | |
837 | } | |
838 | ||
839 | gfs2_glock_dq_uninit(&mount_gh); | |
840 | ||
841 | return 0; | |
842 | ||
843 | fail_threads: | |
844 | init_threads(sdp, UNDO); | |
845 | ||
846 | fail_per_node: | |
847 | init_per_node(sdp, UNDO); | |
848 | ||
849 | fail_inodes: | |
850 | init_inodes(sdp, UNDO); | |
851 | ||
b3b94faa DT |
852 | fail_sb: |
853 | init_sb(sdp, 0, UNDO); | |
854 | ||
855 | fail_locking: | |
856 | init_locking(sdp, &mount_gh, UNDO); | |
857 | ||
858 | fail_lm: | |
859 | gfs2_gl_hash_clear(sdp, WAIT); | |
860 | gfs2_lm_unmount(sdp); | |
861 | while (invalidate_inodes(sb)) | |
862 | yield(); | |
863 | ||
864 | fail_sys: | |
865 | gfs2_sys_fs_del(sdp); | |
866 | ||
867 | fail: | |
868 | vfree(sdp); | |
5c676f6d | 869 | sb->s_fs_info = NULL; |
b3b94faa DT |
870 | |
871 | return error; | |
872 | } | |
873 | ||
874 | static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, | |
875 | int flags, const char *dev_name, | |
876 | void *data) | |
877 | { | |
878 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); | |
879 | } | |
880 | ||
419c93e0 SW |
881 | static void gfs2_kill_sb(struct super_block *sb) |
882 | { | |
883 | kill_block_super(sb); | |
884 | } | |
885 | ||
b3b94faa DT |
886 | struct file_system_type gfs2_fs_type = { |
887 | .name = "gfs2", | |
888 | .fs_flags = FS_REQUIRES_DEV, | |
889 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
890 | .kill_sb = gfs2_kill_sb, |
891 | .owner = THIS_MODULE, | |
892 | }; | |
893 | ||
894 | struct file_system_type gfs2meta_fs_type = { | |
895 | .name = "gfs2meta", | |
896 | .fs_flags = FS_REQUIRES_DEV, | |
897 | .get_sb = gfs2_get_sb, | |
898 | .kill_sb = gfs2_kill_sb, | |
b3b94faa DT |
899 | .owner = THIS_MODULE, |
900 | }; | |
901 |