Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 3 | * Copyright (C) 2004-2008 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> | |
b3b94faa DT |
15 | #include <linux/blkdev.h> |
16 | #include <linux/kthread.h> | |
86384605 AD |
17 | #include <linux/namei.h> |
18 | #include <linux/mount.h> | |
5c676f6d | 19 | #include <linux/gfs2_ondisk.h> |
7d308590 | 20 | #include <linux/lm_interface.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
da6dd40d | 24 | #include "bmap.h" |
b3b94faa DT |
25 | #include "daemon.h" |
26 | #include "glock.h" | |
27 | #include "glops.h" | |
28 | #include "inode.h" | |
b3b94faa | 29 | #include "mount.h" |
b3b94faa | 30 | #include "ops_fstype.h" |
ca5a939b | 31 | #include "ops_dentry.h" |
b3b94faa DT |
32 | #include "ops_super.h" |
33 | #include "recovery.h" | |
34 | #include "rgrp.h" | |
35 | #include "super.h" | |
b3b94faa | 36 | #include "sys.h" |
5c676f6d | 37 | #include "util.h" |
bb3b0e3d | 38 | #include "log.h" |
b3b94faa DT |
39 | |
40 | #define DO 0 | |
41 | #define UNDO 1 | |
42 | ||
9b8df98f SW |
43 | static const u32 gfs2_old_fs_formats[] = { |
44 | 0 | |
45 | }; | |
46 | ||
47 | static const u32 gfs2_old_multihost_formats[] = { | |
48 | 0 | |
49 | }; | |
50 | ||
51 | /** | |
52 | * gfs2_tune_init - Fill a gfs2_tune structure with default values | |
53 | * @gt: tune | |
54 | * | |
55 | */ | |
56 | ||
57 | static void gfs2_tune_init(struct gfs2_tune *gt) | |
58 | { | |
59 | spin_lock_init(>->gt_spin); | |
60 | ||
61 | gt->gt_demote_secs = 300; | |
62 | gt->gt_incore_log_blocks = 1024; | |
63 | gt->gt_log_flush_secs = 60; | |
64 | gt->gt_recoverd_secs = 60; | |
65 | gt->gt_logd_secs = 1; | |
66 | gt->gt_quotad_secs = 5; | |
67 | gt->gt_quota_simul_sync = 64; | |
68 | gt->gt_quota_warn_period = 10; | |
69 | gt->gt_quota_scale_num = 1; | |
70 | gt->gt_quota_scale_den = 1; | |
71 | gt->gt_quota_cache_secs = 300; | |
72 | gt->gt_quota_quantum = 60; | |
9b8df98f SW |
73 | gt->gt_new_files_jdata = 0; |
74 | gt->gt_max_readahead = 1 << 18; | |
75 | gt->gt_stall_secs = 600; | |
76 | gt->gt_complain_secs = 10; | |
77 | gt->gt_statfs_quantum = 30; | |
78 | gt->gt_statfs_slow = 0; | |
79 | } | |
80 | ||
b3b94faa DT |
81 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
82 | { | |
83 | struct gfs2_sbd *sdp; | |
b3b94faa | 84 | |
85d1da67 | 85 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
86 | if (!sdp) |
87 | return NULL; | |
88 | ||
5c676f6d | 89 | sb->s_fs_info = sdp; |
b3b94faa DT |
90 | sdp->sd_vfs = sb; |
91 | ||
92 | gfs2_tune_init(&sdp->sd_tune); | |
93 | ||
b3b94faa DT |
94 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
95 | spin_lock_init(&sdp->sd_reclaim_lock); | |
96 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 97 | |
f55ab26a | 98 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 99 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
100 | |
101 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 102 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
103 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
104 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
b3b94faa DT |
105 | |
106 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
107 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 108 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 109 | |
b3b94faa DT |
110 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
111 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 112 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
113 | |
114 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa | 115 | |
b3b94faa DT |
116 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
117 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
118 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
119 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
d7b616e2 | 120 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
b3b94faa | 121 | |
71b86f56 | 122 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
123 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
124 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
125 | ||
484adff8 | 126 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
127 | atomic_set(&sdp->sd_log_in_flight, 0); |
128 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
b3b94faa DT |
129 | |
130 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
131 | ||
f55ab26a | 132 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
133 | |
134 | return sdp; | |
135 | } | |
136 | ||
b3b94faa | 137 | |
9b8df98f SW |
138 | /** |
139 | * gfs2_check_sb - Check superblock | |
140 | * @sdp: the filesystem | |
141 | * @sb: The superblock | |
142 | * @silent: Don't print a message if the check fails | |
143 | * | |
144 | * Checks the version code of the FS is one that we understand how to | |
145 | * read and that the sizes of the various on-disk structures have not | |
146 | * changed. | |
147 | */ | |
148 | ||
149 | static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) | |
150 | { | |
151 | unsigned int x; | |
152 | ||
153 | if (sb->sb_magic != GFS2_MAGIC || | |
154 | sb->sb_type != GFS2_METATYPE_SB) { | |
155 | if (!silent) | |
156 | printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); | |
157 | return -EINVAL; | |
158 | } | |
159 | ||
160 | /* If format numbers match exactly, we're done. */ | |
161 | ||
162 | if (sb->sb_fs_format == GFS2_FORMAT_FS && | |
163 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) | |
164 | return 0; | |
165 | ||
166 | if (sb->sb_fs_format != GFS2_FORMAT_FS) { | |
167 | for (x = 0; gfs2_old_fs_formats[x]; x++) | |
168 | if (gfs2_old_fs_formats[x] == sb->sb_fs_format) | |
169 | break; | |
170 | ||
171 | if (!gfs2_old_fs_formats[x]) { | |
172 | printk(KERN_WARNING | |
173 | "GFS2: code version (%u, %u) is incompatible " | |
174 | "with ondisk format (%u, %u)\n", | |
175 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
176 | sb->sb_fs_format, sb->sb_multihost_format); | |
177 | printk(KERN_WARNING | |
178 | "GFS2: I don't know how to upgrade this FS\n"); | |
179 | return -EINVAL; | |
180 | } | |
181 | } | |
182 | ||
183 | if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) { | |
184 | for (x = 0; gfs2_old_multihost_formats[x]; x++) | |
185 | if (gfs2_old_multihost_formats[x] == | |
186 | sb->sb_multihost_format) | |
187 | break; | |
188 | ||
189 | if (!gfs2_old_multihost_formats[x]) { | |
190 | printk(KERN_WARNING | |
191 | "GFS2: code version (%u, %u) is incompatible " | |
192 | "with ondisk format (%u, %u)\n", | |
193 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
194 | sb->sb_fs_format, sb->sb_multihost_format); | |
195 | printk(KERN_WARNING | |
196 | "GFS2: I don't know how to upgrade this FS\n"); | |
197 | return -EINVAL; | |
198 | } | |
199 | } | |
200 | ||
201 | if (!sdp->sd_args.ar_upgrade) { | |
202 | printk(KERN_WARNING | |
203 | "GFS2: code version (%u, %u) is incompatible " | |
204 | "with ondisk format (%u, %u)\n", | |
205 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
206 | sb->sb_fs_format, sb->sb_multihost_format); | |
207 | printk(KERN_INFO | |
208 | "GFS2: Use the \"upgrade\" mount option to upgrade " | |
209 | "the FS\n"); | |
210 | printk(KERN_INFO "GFS2: See the manual for more details\n"); | |
211 | return -EINVAL; | |
212 | } | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static void end_bio_io_page(struct bio *bio, int error) | |
218 | { | |
219 | struct page *page = bio->bi_private; | |
220 | ||
221 | if (!error) | |
222 | SetPageUptodate(page); | |
223 | else | |
224 | printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); | |
225 | unlock_page(page); | |
226 | } | |
227 | ||
228 | static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) | |
229 | { | |
230 | const struct gfs2_sb *str = buf; | |
231 | ||
232 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
233 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
234 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); | |
235 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); | |
236 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
237 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
238 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
239 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
240 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
241 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
242 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
243 | ||
244 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
245 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
246 | } | |
247 | ||
248 | /** | |
249 | * gfs2_read_super - Read the gfs2 super block from disk | |
250 | * @sdp: The GFS2 super block | |
251 | * @sector: The location of the super block | |
252 | * @error: The error code to return | |
253 | * | |
254 | * This uses the bio functions to read the super block from disk | |
255 | * because we want to be 100% sure that we never read cached data. | |
256 | * A super block is read twice only during each GFS2 mount and is | |
257 | * never written to by the filesystem. The first time its read no | |
258 | * locks are held, and the only details which are looked at are those | |
259 | * relating to the locking protocol. Once locking is up and working, | |
260 | * the sb is read again under the lock to establish the location of | |
261 | * the master directory (contains pointers to journals etc) and the | |
262 | * root directory. | |
263 | * | |
264 | * Returns: 0 on success or error | |
265 | */ | |
266 | ||
267 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) | |
268 | { | |
269 | struct super_block *sb = sdp->sd_vfs; | |
270 | struct gfs2_sb *p; | |
271 | struct page *page; | |
272 | struct bio *bio; | |
273 | ||
274 | page = alloc_page(GFP_NOFS); | |
275 | if (unlikely(!page)) | |
276 | return -ENOBUFS; | |
277 | ||
278 | ClearPageUptodate(page); | |
279 | ClearPageDirty(page); | |
280 | lock_page(page); | |
281 | ||
282 | bio = bio_alloc(GFP_NOFS, 1); | |
283 | if (unlikely(!bio)) { | |
284 | __free_page(page); | |
285 | return -ENOBUFS; | |
286 | } | |
287 | ||
288 | bio->bi_sector = sector * (sb->s_blocksize >> 9); | |
289 | bio->bi_bdev = sb->s_bdev; | |
290 | bio_add_page(bio, page, PAGE_SIZE, 0); | |
291 | ||
292 | bio->bi_end_io = end_bio_io_page; | |
293 | bio->bi_private = page; | |
294 | submit_bio(READ_SYNC | (1 << BIO_RW_META), bio); | |
295 | wait_on_page_locked(page); | |
296 | bio_put(bio); | |
297 | if (!PageUptodate(page)) { | |
298 | __free_page(page); | |
299 | return -EIO; | |
300 | } | |
301 | p = kmap(page); | |
302 | gfs2_sb_in(&sdp->sd_sb, p); | |
303 | kunmap(page); | |
304 | __free_page(page); | |
305 | return 0; | |
306 | } | |
307 | /** | |
308 | * gfs2_read_sb - Read super block | |
309 | * @sdp: The GFS2 superblock | |
310 | * @gl: the glock for the superblock (assumed to be held) | |
311 | * @silent: Don't print message if mount fails | |
312 | * | |
313 | */ | |
314 | ||
315 | static int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent) | |
316 | { | |
317 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
318 | u32 tmp_blocks; | |
319 | unsigned int x; | |
320 | int error; | |
321 | ||
322 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
323 | if (error) { | |
324 | if (!silent) | |
325 | fs_err(sdp, "can't read superblock\n"); | |
326 | return error; | |
327 | } | |
328 | ||
329 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
330 | if (error) | |
331 | return error; | |
332 | ||
333 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
334 | GFS2_BASIC_BLOCK_SHIFT; | |
335 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
336 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - | |
337 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
338 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
339 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
340 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); | |
341 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
342 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
343 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
344 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
345 | sizeof(struct gfs2_meta_header)) / | |
346 | sizeof(struct gfs2_quota_change); | |
347 | ||
348 | /* Compute maximum reservation required to add a entry to a directory */ | |
349 | ||
350 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), | |
351 | sdp->sd_jbsize); | |
352 | ||
353 | ind_blocks = 0; | |
354 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
355 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
356 | ind_blocks += tmp_blocks; | |
357 | } | |
358 | ||
359 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
360 | ||
361 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
362 | ||
363 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
364 | sizeof(struct gfs2_dinode); | |
365 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
366 | for (x = 2;; x++) { | |
367 | u64 space, d; | |
368 | u32 m; | |
369 | ||
370 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
371 | d = space; | |
372 | m = do_div(d, sdp->sd_inptrs); | |
373 | ||
374 | if (d != sdp->sd_heightsize[x - 1] || m) | |
375 | break; | |
376 | sdp->sd_heightsize[x] = space; | |
377 | } | |
378 | sdp->sd_max_height = x; | |
379 | sdp->sd_heightsize[x] = ~0; | |
380 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
381 | ||
382 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - | |
383 | sizeof(struct gfs2_dinode); | |
384 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; | |
385 | for (x = 2;; x++) { | |
386 | u64 space, d; | |
387 | u32 m; | |
388 | ||
389 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; | |
390 | d = space; | |
391 | m = do_div(d, sdp->sd_inptrs); | |
392 | ||
393 | if (d != sdp->sd_jheightsize[x - 1] || m) | |
394 | break; | |
395 | sdp->sd_jheightsize[x] = space; | |
396 | } | |
397 | sdp->sd_max_jheight = x; | |
398 | sdp->sd_jheightsize[x] = ~0; | |
399 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
b3b94faa DT |
404 | static int init_names(struct gfs2_sbd *sdp, int silent) |
405 | { | |
b3b94faa DT |
406 | char *proto, *table; |
407 | int error = 0; | |
408 | ||
409 | proto = sdp->sd_args.ar_lockproto; | |
410 | table = sdp->sd_args.ar_locktable; | |
411 | ||
412 | /* Try to autodetect */ | |
413 | ||
414 | if (!proto[0] || !table[0]) { | |
bb8d8a6f SW |
415 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
416 | if (error) | |
417 | return error; | |
3cf1e7be SW |
418 | |
419 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
420 | if (error) |
421 | goto out; | |
422 | ||
423 | if (!proto[0]) | |
3cf1e7be | 424 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 425 | if (!table[0]) |
3cf1e7be | 426 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
427 | } |
428 | ||
429 | if (!table[0]) | |
430 | table = sdp->sd_vfs->s_id; | |
431 | ||
00377d8e JD |
432 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
433 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); | |
b3b94faa | 434 | |
5d35e31f DC |
435 | table = sdp->sd_table_name; |
436 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
437 | *table = '_'; |
438 | ||
a91ea69f | 439 | out: |
b3b94faa DT |
440 | return error; |
441 | } | |
442 | ||
443 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
444 | int undo) | |
445 | { | |
446 | struct task_struct *p; | |
447 | int error = 0; | |
448 | ||
449 | if (undo) | |
450 | goto fail_trans; | |
451 | ||
b3b94faa DT |
452 | for (sdp->sd_glockd_num = 0; |
453 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
454 | sdp->sd_glockd_num++) { | |
455 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
456 | error = IS_ERR(p); | |
457 | if (error) { | |
458 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
459 | goto fail; | |
460 | } | |
461 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
462 | } | |
463 | ||
464 | error = gfs2_glock_nq_num(sdp, | |
465 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
466 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
467 | mount_gh); | |
468 | if (error) { | |
469 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
470 | goto fail; | |
471 | } | |
472 | ||
473 | error = gfs2_glock_nq_num(sdp, | |
474 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
475 | LM_ST_SHARED, | |
579b78a4 | 476 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
477 | &sdp->sd_live_gh); |
478 | if (error) { | |
479 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
480 | goto fail_mount; | |
481 | } | |
482 | ||
483 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
484 | CREATE, &sdp->sd_rename_gl); | |
485 | if (error) { | |
486 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
487 | goto fail_live; | |
488 | } | |
489 | ||
490 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
491 | CREATE, &sdp->sd_trans_gl); | |
492 | if (error) { | |
493 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
494 | goto fail_rename; | |
495 | } | |
496 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
497 | ||
498 | return 0; | |
499 | ||
feaa7bba | 500 | fail_trans: |
b3b94faa | 501 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 502 | fail_rename: |
b3b94faa | 503 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 504 | fail_live: |
b3b94faa | 505 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 506 | fail_mount: |
b3b94faa | 507 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 508 | fail: |
b3b94faa DT |
509 | while (sdp->sd_glockd_num--) |
510 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
511 | ||
b3b94faa DT |
512 | return error; |
513 | } | |
514 | ||
9b8df98f SW |
515 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
516 | u64 no_addr, const char *name) | |
f42faf4f | 517 | { |
9b8df98f SW |
518 | struct gfs2_sbd *sdp = sb->s_fs_info; |
519 | struct dentry *dentry; | |
520 | struct inode *inode; | |
521 | ||
522 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); | |
523 | if (IS_ERR(inode)) { | |
524 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
525 | return PTR_ERR(inode); | |
526 | } | |
527 | dentry = d_alloc_root(inode); | |
528 | if (!dentry) { | |
529 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
530 | iput(inode); | |
531 | return -ENOMEM; | |
532 | } | |
533 | dentry->d_op = &gfs2_dops; | |
534 | *dptr = dentry; | |
535 | return 0; | |
f42faf4f SW |
536 | } |
537 | ||
9b8df98f | 538 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
539 | { |
540 | struct super_block *sb = sdp->sd_vfs; | |
541 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 542 | u64 no_addr; |
9b8df98f | 543 | int ret; |
b3b94faa | 544 | |
9b8df98f SW |
545 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
546 | LM_ST_SHARED, 0, &sb_gh); | |
547 | if (ret) { | |
548 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
549 | return ret; | |
b3b94faa | 550 | } |
907b9bce | 551 | |
9b8df98f SW |
552 | ret = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); |
553 | if (ret) { | |
554 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
555 | goto out; |
556 | } | |
557 | ||
558 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 559 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
9b8df98f | 560 | ret = -EINVAL; |
b3b94faa DT |
561 | fs_err(sdp, "FS block size (%u) is too small for device " |
562 | "block size (%u)\n", | |
563 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
564 | goto out; | |
565 | } | |
566 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 567 | ret = -EINVAL; |
b3b94faa DT |
568 | fs_err(sdp, "FS block size (%u) is too big for machine " |
569 | "page size (%u)\n", | |
570 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
571 | goto out; | |
572 | } | |
b3b94faa DT |
573 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
574 | ||
f42faf4f | 575 | /* Get the root inode */ |
dbb7cae2 | 576 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
577 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
578 | if (ret) | |
f42faf4f | 579 | goto out; |
b3b94faa | 580 | |
9b8df98f SW |
581 | /* Get the master inode */ |
582 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
583 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
584 | if (ret) { | |
585 | dput(sdp->sd_root_dir); | |
586 | goto out; | |
587 | } | |
588 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 589 | out: |
b3b94faa | 590 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 591 | return ret; |
b3b94faa DT |
592 | } |
593 | ||
da6dd40d BP |
594 | /** |
595 | * map_journal_extents - create a reusable "extent" mapping from all logical | |
596 | * blocks to all physical blocks for the given journal. This will save | |
597 | * us time when writing journal blocks. Most journals will have only one | |
598 | * extent that maps all their logical blocks. That's because gfs2.mkfs | |
599 | * arranges the journal blocks sequentially to maximize performance. | |
600 | * So the extent would map the first block for the entire file length. | |
601 | * However, gfs2_jadd can happen while file activity is happening, so | |
602 | * those journals may not be sequential. Less likely is the case where | |
603 | * the users created their own journals by mounting the metafs and | |
604 | * laying it out. But it's still possible. These journals might have | |
605 | * several extents. | |
606 | * | |
607 | * TODO: This should be done in bigger chunks rather than one block at a time, | |
608 | * but since it's only done at mount time, I'm not worried about the | |
609 | * time it takes. | |
610 | */ | |
611 | static int map_journal_extents(struct gfs2_sbd *sdp) | |
612 | { | |
613 | struct gfs2_jdesc *jd = sdp->sd_jdesc; | |
614 | unsigned int lb; | |
615 | u64 db, prev_db; /* logical block, disk block, prev disk block */ | |
616 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); | |
617 | struct gfs2_journal_extent *jext = NULL; | |
618 | struct buffer_head bh; | |
619 | int rc = 0; | |
620 | ||
da6dd40d BP |
621 | prev_db = 0; |
622 | ||
fa3742fa | 623 | for (lb = 0; lb < ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift; lb++) { |
da6dd40d BP |
624 | bh.b_state = 0; |
625 | bh.b_blocknr = 0; | |
626 | bh.b_size = 1 << ip->i_inode.i_blkbits; | |
627 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); | |
628 | db = bh.b_blocknr; | |
629 | if (rc || !db) { | |
630 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" | |
631 | "%u db=%llu\n", rc, lb, (unsigned long long)db); | |
632 | break; | |
633 | } | |
634 | if (!prev_db || db != prev_db + 1) { | |
635 | jext = kzalloc(sizeof(struct gfs2_journal_extent), | |
636 | GFP_KERNEL); | |
637 | if (!jext) { | |
638 | printk(KERN_INFO "GFS2 error: out of memory " | |
639 | "mapping journal extents.\n"); | |
640 | rc = -ENOMEM; | |
641 | break; | |
642 | } | |
643 | jext->dblock = db; | |
644 | jext->lblock = lb; | |
645 | jext->blocks = 1; | |
646 | list_add_tail(&jext->extent_list, &jd->extent_list); | |
647 | } else { | |
648 | jext->blocks++; | |
649 | } | |
650 | prev_db = db; | |
651 | } | |
652 | return rc; | |
653 | } | |
654 | ||
da755fdb SW |
655 | static void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp) |
656 | { | |
048bca22 SW |
657 | if (!sdp->sd_lockstruct.ls_ops->lm_others_may_mount) |
658 | return; | |
da755fdb SW |
659 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))) |
660 | sdp->sd_lockstruct.ls_ops->lm_others_may_mount( | |
661 | sdp->sd_lockstruct.ls_lockspace); | |
662 | } | |
663 | ||
b3b94faa DT |
664 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
665 | { | |
9b8df98f | 666 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
667 | struct gfs2_holder ji_gh; |
668 | struct task_struct *p; | |
5c676f6d | 669 | struct gfs2_inode *ip; |
b3b94faa DT |
670 | int jindex = 1; |
671 | int error = 0; | |
672 | ||
673 | if (undo) { | |
674 | jindex = 0; | |
675 | goto fail_recoverd; | |
676 | } | |
677 | ||
9b8df98f | 678 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 679 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 680 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 681 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 682 | } |
feaa7bba | 683 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 684 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
685 | |
686 | /* Load in the journal index special file */ | |
687 | ||
688 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
689 | if (error) { | |
690 | fs_err(sdp, "can't read journal index: %d\n", error); | |
691 | goto fail; | |
692 | } | |
693 | ||
694 | error = -EINVAL; | |
695 | if (!gfs2_jindex_size(sdp)) { | |
696 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 697 | goto fail_jindex; |
b3b94faa DT |
698 | } |
699 | ||
700 | if (sdp->sd_args.ar_spectator) { | |
701 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 702 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
b3b94faa DT |
703 | } else { |
704 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
705 | fs_err(sdp, "can't mount journal #%u\n", | |
706 | sdp->sd_lockstruct.ls_jid); | |
707 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
708 | gfs2_jindex_size(sdp), | |
709 | gfs2_jindex_size(sdp) - 1); | |
710 | goto fail_jindex; | |
711 | } | |
712 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
713 | ||
feaa7bba | 714 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
715 | &gfs2_journal_glops, |
716 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
717 | &sdp->sd_journal_gh); | |
718 | if (error) { | |
719 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
720 | goto fail_jindex; | |
721 | } | |
722 | ||
feaa7bba SW |
723 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
724 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 725 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
726 | &sdp->sd_jinode_gh); |
727 | if (error) { | |
728 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
729 | error); | |
730 | goto fail_journal_gh; | |
731 | } | |
732 | ||
733 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
734 | if (error) { | |
735 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
736 | sdp->sd_jdesc->jd_jid, error); | |
737 | goto fail_jinode_gh; | |
738 | } | |
fd041f0b | 739 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
da6dd40d BP |
740 | |
741 | /* Map the extents for this journal's blocks */ | |
742 | map_journal_extents(sdp); | |
b3b94faa DT |
743 | } |
744 | ||
745 | if (sdp->sd_lockstruct.ls_first) { | |
746 | unsigned int x; | |
747 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 748 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
749 | if (error) { |
750 | fs_err(sdp, "error recovering journal %u: %d\n", | |
751 | x, error); | |
752 | goto fail_jinode_gh; | |
753 | } | |
754 | } | |
755 | ||
756 | gfs2_lm_others_may_mount(sdp); | |
757 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 758 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
759 | if (error) { |
760 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
761 | goto fail_jinode_gh; | |
762 | } | |
763 | } | |
764 | ||
765 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
766 | gfs2_glock_dq_uninit(&ji_gh); | |
767 | jindex = 0; | |
768 | ||
b3b94faa DT |
769 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
770 | error = IS_ERR(p); | |
771 | if (error) { | |
772 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
773 | goto fail_jinode_gh; | |
774 | } | |
775 | sdp->sd_recoverd_process = p; | |
776 | ||
777 | return 0; | |
778 | ||
a91ea69f | 779 | fail_recoverd: |
b3b94faa | 780 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 781 | fail_jinode_gh: |
b3b94faa DT |
782 | if (!sdp->sd_args.ar_spectator) |
783 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 784 | fail_journal_gh: |
b3b94faa DT |
785 | if (!sdp->sd_args.ar_spectator) |
786 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 787 | fail_jindex: |
b3b94faa DT |
788 | gfs2_jindex_free(sdp); |
789 | if (jindex) | |
790 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 791 | fail: |
f42faf4f | 792 | iput(sdp->sd_jindex); |
b3b94faa DT |
793 | return error; |
794 | } | |
795 | ||
b3b94faa DT |
796 | |
797 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
798 | { | |
b3b94faa | 799 | int error = 0; |
5c676f6d | 800 | struct gfs2_inode *ip; |
9b8df98f | 801 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
802 | |
803 | if (undo) | |
f42faf4f SW |
804 | goto fail_qinode; |
805 | ||
f42faf4f SW |
806 | error = init_journal(sdp, undo); |
807 | if (error) | |
9b8df98f | 808 | goto fail; |
b3b94faa DT |
809 | |
810 | /* Read in the master inode number inode */ | |
9b8df98f | 811 | sdp->sd_inum_inode = gfs2_lookup_simple(master, "inum"); |
c752666c SW |
812 | if (IS_ERR(sdp->sd_inum_inode)) { |
813 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 814 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 815 | goto fail_journal; |
b3b94faa DT |
816 | } |
817 | ||
f42faf4f | 818 | |
b3b94faa | 819 | /* Read in the master statfs inode */ |
9b8df98f | 820 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
c752666c SW |
821 | if (IS_ERR(sdp->sd_statfs_inode)) { |
822 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 823 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 824 | goto fail_inum; |
b3b94faa DT |
825 | } |
826 | ||
827 | /* Read in the resource index inode */ | |
9b8df98f | 828 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
829 | if (IS_ERR(sdp->sd_rindex)) { |
830 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
831 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
832 | goto fail_statfs; | |
833 | } | |
feaa7bba | 834 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d | 835 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
cf45b752 | 836 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
837 | |
838 | /* Read in the quota inode */ | |
9b8df98f | 839 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
840 | if (IS_ERR(sdp->sd_quota_inode)) { |
841 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
842 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
843 | goto fail_rindex; | |
844 | } | |
b3b94faa DT |
845 | return 0; |
846 | ||
f42faf4f SW |
847 | fail_qinode: |
848 | iput(sdp->sd_quota_inode); | |
f42faf4f | 849 | fail_rindex: |
b3b94faa | 850 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 851 | iput(sdp->sd_rindex); |
f42faf4f SW |
852 | fail_statfs: |
853 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
854 | fail_inum: |
855 | iput(sdp->sd_inum_inode); | |
856 | fail_journal: | |
857 | init_journal(sdp, UNDO); | |
f42faf4f | 858 | fail: |
b3b94faa DT |
859 | return error; |
860 | } | |
861 | ||
862 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
863 | { | |
f42faf4f | 864 | struct inode *pn = NULL; |
b3b94faa DT |
865 | char buf[30]; |
866 | int error = 0; | |
5c676f6d | 867 | struct gfs2_inode *ip; |
9b8df98f | 868 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
869 | |
870 | if (sdp->sd_args.ar_spectator) | |
871 | return 0; | |
872 | ||
873 | if (undo) | |
874 | goto fail_qc_gh; | |
875 | ||
9b8df98f | 876 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
877 | if (IS_ERR(pn)) { |
878 | error = PTR_ERR(pn); | |
b3b94faa DT |
879 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
880 | return error; | |
881 | } | |
882 | ||
883 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
884 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
885 | if (IS_ERR(sdp->sd_ir_inode)) { | |
886 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
887 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
888 | goto fail; | |
889 | } | |
890 | ||
891 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
892 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
893 | if (IS_ERR(sdp->sd_sc_inode)) { | |
894 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
895 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
896 | goto fail_ir_i; | |
897 | } | |
898 | ||
b3b94faa | 899 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
900 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
901 | if (IS_ERR(sdp->sd_qc_inode)) { | |
902 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
903 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
904 | goto fail_ut_i; | |
905 | } | |
906 | ||
f42faf4f | 907 | iput(pn); |
b3b94faa DT |
908 | pn = NULL; |
909 | ||
feaa7bba | 910 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 911 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 912 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
913 | &sdp->sd_ir_gh); |
914 | if (error) { | |
915 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
916 | goto fail_qc_i; | |
917 | } | |
918 | ||
feaa7bba | 919 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 920 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 921 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
922 | &sdp->sd_sc_gh); |
923 | if (error) { | |
924 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
925 | goto fail_ir_gh; | |
926 | } | |
927 | ||
feaa7bba | 928 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 929 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 930 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
931 | &sdp->sd_qc_gh); |
932 | if (error) { | |
933 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
934 | goto fail_ut_gh; | |
935 | } | |
936 | ||
937 | return 0; | |
938 | ||
a91ea69f | 939 | fail_qc_gh: |
b3b94faa | 940 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 941 | fail_ut_gh: |
b3b94faa | 942 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 943 | fail_ir_gh: |
b3b94faa | 944 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 945 | fail_qc_i: |
f42faf4f | 946 | iput(sdp->sd_qc_inode); |
a91ea69f | 947 | fail_ut_i: |
f42faf4f | 948 | iput(sdp->sd_sc_inode); |
a91ea69f | 949 | fail_ir_i: |
f42faf4f | 950 | iput(sdp->sd_ir_inode); |
a91ea69f | 951 | fail: |
b3b94faa | 952 | if (pn) |
f42faf4f | 953 | iput(pn); |
b3b94faa DT |
954 | return error; |
955 | } | |
956 | ||
957 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
958 | { | |
959 | struct task_struct *p; | |
960 | int error = 0; | |
961 | ||
962 | if (undo) | |
feaa7bba | 963 | goto fail_quotad; |
b3b94faa DT |
964 | |
965 | sdp->sd_log_flush_time = jiffies; | |
966 | sdp->sd_jindex_refresh_time = jiffies; | |
967 | ||
968 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
969 | error = IS_ERR(p); | |
970 | if (error) { | |
971 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
972 | return error; | |
973 | } | |
974 | sdp->sd_logd_process = p; | |
975 | ||
976 | sdp->sd_statfs_sync_time = jiffies; | |
977 | sdp->sd_quota_sync_time = jiffies; | |
978 | ||
979 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
980 | error = IS_ERR(p); | |
981 | if (error) { | |
982 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
983 | goto fail; | |
984 | } | |
985 | sdp->sd_quotad_process = p; | |
986 | ||
b3b94faa DT |
987 | return 0; |
988 | ||
b3b94faa | 989 | |
feaa7bba | 990 | fail_quotad: |
b3b94faa | 991 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 992 | fail: |
b3b94faa | 993 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
994 | return error; |
995 | } | |
da755fdb SW |
996 | |
997 | /** | |
998 | * gfs2_lm_mount - mount a locking protocol | |
999 | * @sdp: the filesystem | |
1000 | * @args: mount arguements | |
1001 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs | |
1002 | * | |
1003 | * Returns: errno | |
1004 | */ | |
1005 | ||
1006 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
1007 | { | |
1008 | char *proto = sdp->sd_proto_name; | |
1009 | char *table = sdp->sd_table_name; | |
58e9fee1 | 1010 | int flags = LM_MFLAG_CONV_NODROP; |
da755fdb SW |
1011 | int error; |
1012 | ||
1013 | if (sdp->sd_args.ar_spectator) | |
1014 | flags |= LM_MFLAG_SPECTATOR; | |
1015 | ||
1016 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
1017 | ||
1018 | error = gfs2_mount_lockproto(proto, table, sdp->sd_args.ar_hostdata, | |
1019 | gfs2_glock_cb, sdp, | |
1020 | GFS2_MIN_LVB_SIZE, flags, | |
1021 | &sdp->sd_lockstruct, &sdp->sd_kobj); | |
1022 | if (error) { | |
1023 | fs_info(sdp, "can't mount proto=%s, table=%s, hostdata=%s\n", | |
1024 | proto, table, sdp->sd_args.ar_hostdata); | |
1025 | goto out; | |
1026 | } | |
1027 | ||
048bca22 | 1028 | if (gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_ops) || |
da755fdb SW |
1029 | gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lvb_size >= |
1030 | GFS2_MIN_LVB_SIZE)) { | |
1031 | gfs2_unmount_lockproto(&sdp->sd_lockstruct); | |
1032 | goto out; | |
1033 | } | |
1034 | ||
1035 | if (sdp->sd_args.ar_spectator) | |
1036 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table); | |
1037 | else | |
1038 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table, | |
1039 | sdp->sd_lockstruct.ls_jid); | |
1040 | ||
1041 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); | |
1042 | ||
1043 | if ((sdp->sd_lockstruct.ls_flags & LM_LSFLAG_LOCAL) && | |
1044 | !sdp->sd_args.ar_ignore_local_fs) { | |
1045 | sdp->sd_args.ar_localflocks = 1; | |
1046 | sdp->sd_args.ar_localcaching = 1; | |
1047 | } | |
1048 | ||
1049 | out: | |
1050 | return error; | |
1051 | } | |
1052 | ||
1053 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1054 | { | |
1055 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))) | |
1056 | gfs2_unmount_lockproto(&sdp->sd_lockstruct); | |
1057 | } | |
b3b94faa DT |
1058 | |
1059 | /** | |
1060 | * fill_super - Read in superblock | |
1061 | * @sb: The VFS superblock | |
1062 | * @data: Mount options | |
1063 | * @silent: Don't complain if it's not a GFS2 filesystem | |
1064 | * | |
1065 | * Returns: errno | |
1066 | */ | |
1067 | ||
1068 | static int fill_super(struct super_block *sb, void *data, int silent) | |
1069 | { | |
1070 | struct gfs2_sbd *sdp; | |
1071 | struct gfs2_holder mount_gh; | |
1072 | int error; | |
1073 | ||
1074 | sdp = init_sbd(sb); | |
1075 | if (!sdp) { | |
d92a8d48 | 1076 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1077 | return -ENOMEM; |
1078 | } | |
1079 | ||
1080 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
1081 | if (error) { | |
d92a8d48 | 1082 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
1083 | goto fail; |
1084 | } | |
1085 | ||
719ee344 SW |
1086 | sb->s_magic = GFS2_MAGIC; |
1087 | sb->s_op = &gfs2_super_ops; | |
1088 | sb->s_export_op = &gfs2_export_ops; | |
1089 | sb->s_time_gran = 1; | |
1090 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1091 | |
1092 | /* Set up the buffer cache and fill in some fake block size values | |
1093 | to allow us to read-in the on-disk superblock. */ | |
1094 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1095 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1096 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1097 | GFS2_BASIC_BLOCK_SHIFT; | |
1098 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
1099 | |
1100 | error = init_names(sdp, silent); | |
1101 | if (error) | |
1102 | goto fail; | |
1103 | ||
7c52b166 RP |
1104 | gfs2_create_debugfs_file(sdp); |
1105 | ||
b3b94faa DT |
1106 | error = gfs2_sys_fs_add(sdp); |
1107 | if (error) | |
1108 | goto fail; | |
1109 | ||
1110 | error = gfs2_lm_mount(sdp, silent); | |
1111 | if (error) | |
1112 | goto fail_sys; | |
1113 | ||
1114 | error = init_locking(sdp, &mount_gh, DO); | |
1115 | if (error) | |
1116 | goto fail_lm; | |
1117 | ||
9b8df98f | 1118 | error = init_sb(sdp, silent); |
b3b94faa DT |
1119 | if (error) |
1120 | goto fail_locking; | |
b3b94faa DT |
1121 | |
1122 | error = init_inodes(sdp, DO); | |
1123 | if (error) | |
f42faf4f | 1124 | goto fail_sb; |
b3b94faa DT |
1125 | |
1126 | error = init_per_node(sdp, DO); | |
1127 | if (error) | |
1128 | goto fail_inodes; | |
1129 | ||
1130 | error = gfs2_statfs_init(sdp); | |
1131 | if (error) { | |
1132 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1133 | goto fail_per_node; | |
1134 | } | |
1135 | ||
1136 | error = init_threads(sdp, DO); | |
1137 | if (error) | |
1138 | goto fail_per_node; | |
1139 | ||
1140 | if (!(sb->s_flags & MS_RDONLY)) { | |
1141 | error = gfs2_make_fs_rw(sdp); | |
1142 | if (error) { | |
1143 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
1144 | goto fail_threads; | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | gfs2_glock_dq_uninit(&mount_gh); | |
1149 | ||
1150 | return 0; | |
1151 | ||
a91ea69f | 1152 | fail_threads: |
b3b94faa | 1153 | init_threads(sdp, UNDO); |
a91ea69f | 1154 | fail_per_node: |
b3b94faa | 1155 | init_per_node(sdp, UNDO); |
a91ea69f | 1156 | fail_inodes: |
b3b94faa | 1157 | init_inodes(sdp, UNDO); |
a91ea69f | 1158 | fail_sb: |
9b8df98f SW |
1159 | if (sdp->sd_root_dir) |
1160 | dput(sdp->sd_root_dir); | |
1161 | if (sdp->sd_master_dir) | |
1162 | dput(sdp->sd_master_dir); | |
1163 | sb->s_root = NULL; | |
a91ea69f | 1164 | fail_locking: |
b3b94faa | 1165 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1166 | fail_lm: |
1bdad606 | 1167 | gfs2_gl_hash_clear(sdp); |
b3b94faa DT |
1168 | gfs2_lm_unmount(sdp); |
1169 | while (invalidate_inodes(sb)) | |
1170 | yield(); | |
a91ea69f | 1171 | fail_sys: |
b3b94faa | 1172 | gfs2_sys_fs_del(sdp); |
a91ea69f | 1173 | fail: |
5f882096 | 1174 | gfs2_delete_debugfs_file(sdp); |
a2c45807 | 1175 | kfree(sdp); |
5c676f6d | 1176 | sb->s_fs_info = NULL; |
b3b94faa DT |
1177 | return error; |
1178 | } | |
1179 | ||
ccd6efd0 | 1180 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
9b8df98f | 1181 | const char *dev_name, void *data, struct vfsmount *mnt) |
b3b94faa | 1182 | { |
9b8df98f | 1183 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); |
86384605 AD |
1184 | } |
1185 | ||
9b8df98f | 1186 | static struct super_block *get_gfs2_sb(const char *dev_name) |
86384605 | 1187 | { |
9b8df98f | 1188 | struct super_block *sb; |
86384605 | 1189 | struct nameidata nd; |
86384605 | 1190 | int error; |
907b9bce | 1191 | |
86384605 AD |
1192 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); |
1193 | if (error) { | |
9b8df98f SW |
1194 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", |
1195 | dev_name, error); | |
1196 | return NULL; | |
86384605 | 1197 | } |
9b8df98f SW |
1198 | sb = nd.path.dentry->d_inode->i_sb; |
1199 | if (sb && (sb->s_type == &gfs2_fs_type)) | |
1200 | atomic_inc(&sb->s_active); | |
1201 | else | |
1202 | sb = NULL; | |
1d957f9b | 1203 | path_put(&nd.path); |
86384605 AD |
1204 | return sb; |
1205 | } | |
1206 | ||
1207 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
1208 | const char *dev_name, void *data, struct vfsmount *mnt) | |
1209 | { | |
9b8df98f | 1210 | struct super_block *sb = NULL; |
86384605 | 1211 | struct gfs2_sbd *sdp; |
86384605 AD |
1212 | |
1213 | sb = get_gfs2_sb(dev_name); | |
1214 | if (!sb) { | |
1215 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
9b8df98f | 1216 | return -ENOENT; |
86384605 | 1217 | } |
2d3ba1ea | 1218 | sdp = sb->s_fs_info; |
9b8df98f SW |
1219 | mnt->mnt_sb = sb; |
1220 | mnt->mnt_root = dget(sdp->sd_master_dir); | |
1221 | return 0; | |
b3b94faa DT |
1222 | } |
1223 | ||
419c93e0 | 1224 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1225 | { |
1226 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
acd2c8aa AD |
1227 | if (sdp) { |
1228 | gfs2_meta_syncfs(sdp); | |
1229 | dput(sdp->sd_root_dir); | |
1230 | dput(sdp->sd_master_dir); | |
1231 | sdp->sd_root_dir = NULL; | |
1232 | sdp->sd_master_dir = NULL; | |
1233 | } | |
9b8df98f SW |
1234 | shrink_dcache_sb(sb); |
1235 | kill_block_super(sb); | |
acd2c8aa AD |
1236 | if (sdp) |
1237 | gfs2_delete_debugfs_file(sdp); | |
86384605 AD |
1238 | } |
1239 | ||
b3b94faa DT |
1240 | struct file_system_type gfs2_fs_type = { |
1241 | .name = "gfs2", | |
1242 | .fs_flags = FS_REQUIRES_DEV, | |
1243 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
1244 | .kill_sb = gfs2_kill_sb, |
1245 | .owner = THIS_MODULE, | |
1246 | }; | |
1247 | ||
1248 | struct file_system_type gfs2meta_fs_type = { | |
1249 | .name = "gfs2meta", | |
1250 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 | 1251 | .get_sb = gfs2_get_sb_meta, |
b3b94faa DT |
1252 | .owner = THIS_MODULE, |
1253 | }; | |
1254 |