Commit | Line | Data |
---|---|---|
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> |
cc632e7f | 20 | #include <linux/quotaops.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
da6dd40d | 24 | #include "bmap.h" |
b3b94faa DT |
25 | #include "glock.h" |
26 | #include "glops.h" | |
27 | #include "inode.h" | |
b3b94faa DT |
28 | #include "recovery.h" |
29 | #include "rgrp.h" | |
30 | #include "super.h" | |
b3b94faa | 31 | #include "sys.h" |
5c676f6d | 32 | #include "util.h" |
bb3b0e3d | 33 | #include "log.h" |
9ac1b4d9 | 34 | #include "quota.h" |
b5289681 | 35 | #include "dir.h" |
63997775 | 36 | #include "trace_gfs2.h" |
b3b94faa DT |
37 | |
38 | #define DO 0 | |
39 | #define UNDO 1 | |
40 | ||
9b8df98f SW |
41 | static const u32 gfs2_old_fs_formats[] = { |
42 | 0 | |
43 | }; | |
44 | ||
45 | static const u32 gfs2_old_multihost_formats[] = { | |
46 | 0 | |
47 | }; | |
48 | ||
49 | /** | |
50 | * gfs2_tune_init - Fill a gfs2_tune structure with default values | |
51 | * @gt: tune | |
52 | * | |
53 | */ | |
54 | ||
55 | static void gfs2_tune_init(struct gfs2_tune *gt) | |
56 | { | |
57 | spin_lock_init(>->gt_spin); | |
58 | ||
9b8df98f SW |
59 | gt->gt_quota_simul_sync = 64; |
60 | gt->gt_quota_warn_period = 10; | |
61 | gt->gt_quota_scale_num = 1; | |
62 | gt->gt_quota_scale_den = 1; | |
9b8df98f SW |
63 | gt->gt_new_files_jdata = 0; |
64 | gt->gt_max_readahead = 1 << 18; | |
9b8df98f | 65 | gt->gt_complain_secs = 10; |
9b8df98f SW |
66 | } |
67 | ||
b3b94faa DT |
68 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
69 | { | |
70 | struct gfs2_sbd *sdp; | |
b3b94faa | 71 | |
85d1da67 | 72 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
73 | if (!sdp) |
74 | return NULL; | |
75 | ||
5c676f6d | 76 | sb->s_fs_info = sdp; |
b3b94faa | 77 | sdp->sd_vfs = sb; |
ba6e9364 | 78 | set_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
b3b94faa DT |
79 | gfs2_tune_init(&sdp->sd_tune); |
80 | ||
e402746a SW |
81 | init_waitqueue_head(&sdp->sd_glock_wait); |
82 | atomic_set(&sdp->sd_glock_disposal, 0); | |
b3b94faa | 83 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
84 | |
85 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 86 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
87 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
88 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
b3b94faa DT |
89 | |
90 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
91 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 92 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 93 | |
b3b94faa | 94 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
f55ab26a | 95 | mutex_init(&sdp->sd_quota_mutex); |
37b2c837 | 96 | init_waitqueue_head(&sdp->sd_quota_wait); |
813e0c46 SW |
97 | INIT_LIST_HEAD(&sdp->sd_trunc_list); |
98 | spin_lock_init(&sdp->sd_trunc_lock); | |
b3b94faa DT |
99 | |
100 | spin_lock_init(&sdp->sd_log_lock); | |
5e687eac | 101 | atomic_set(&sdp->sd_log_pinned, 0); |
b3b94faa DT |
102 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
103 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
104 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
105 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
d7b616e2 | 106 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
b3b94faa | 107 | |
5e687eac BM |
108 | init_waitqueue_head(&sdp->sd_log_waitq); |
109 | init_waitqueue_head(&sdp->sd_logd_waitq); | |
b3b94faa DT |
110 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
111 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
112 | ||
484adff8 | 113 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
114 | atomic_set(&sdp->sd_log_in_flight, 0); |
115 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
b3b94faa DT |
116 | |
117 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
118 | ||
f55ab26a | 119 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
120 | |
121 | return sdp; | |
122 | } | |
123 | ||
b3b94faa | 124 | |
9b8df98f SW |
125 | /** |
126 | * gfs2_check_sb - Check superblock | |
127 | * @sdp: the filesystem | |
128 | * @sb: The superblock | |
129 | * @silent: Don't print a message if the check fails | |
130 | * | |
131 | * Checks the version code of the FS is one that we understand how to | |
132 | * read and that the sizes of the various on-disk structures have not | |
133 | * changed. | |
134 | */ | |
135 | ||
136 | static int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent) | |
137 | { | |
138 | unsigned int x; | |
139 | ||
140 | if (sb->sb_magic != GFS2_MAGIC || | |
141 | sb->sb_type != GFS2_METATYPE_SB) { | |
142 | if (!silent) | |
143 | printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); | |
144 | return -EINVAL; | |
145 | } | |
146 | ||
147 | /* If format numbers match exactly, we're done. */ | |
148 | ||
149 | if (sb->sb_fs_format == GFS2_FORMAT_FS && | |
150 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) | |
151 | return 0; | |
152 | ||
153 | if (sb->sb_fs_format != GFS2_FORMAT_FS) { | |
154 | for (x = 0; gfs2_old_fs_formats[x]; x++) | |
155 | if (gfs2_old_fs_formats[x] == sb->sb_fs_format) | |
156 | break; | |
157 | ||
158 | if (!gfs2_old_fs_formats[x]) { | |
159 | printk(KERN_WARNING | |
160 | "GFS2: code version (%u, %u) is incompatible " | |
161 | "with ondisk format (%u, %u)\n", | |
162 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
163 | sb->sb_fs_format, sb->sb_multihost_format); | |
164 | printk(KERN_WARNING | |
165 | "GFS2: I don't know how to upgrade this FS\n"); | |
166 | return -EINVAL; | |
167 | } | |
168 | } | |
169 | ||
170 | if (sb->sb_multihost_format != GFS2_FORMAT_MULTI) { | |
171 | for (x = 0; gfs2_old_multihost_formats[x]; x++) | |
172 | if (gfs2_old_multihost_formats[x] == | |
173 | sb->sb_multihost_format) | |
174 | break; | |
175 | ||
176 | if (!gfs2_old_multihost_formats[x]) { | |
177 | printk(KERN_WARNING | |
178 | "GFS2: code version (%u, %u) is incompatible " | |
179 | "with ondisk format (%u, %u)\n", | |
180 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
181 | sb->sb_fs_format, sb->sb_multihost_format); | |
182 | printk(KERN_WARNING | |
183 | "GFS2: I don't know how to upgrade this FS\n"); | |
184 | return -EINVAL; | |
185 | } | |
186 | } | |
187 | ||
188 | if (!sdp->sd_args.ar_upgrade) { | |
189 | printk(KERN_WARNING | |
190 | "GFS2: code version (%u, %u) is incompatible " | |
191 | "with ondisk format (%u, %u)\n", | |
192 | GFS2_FORMAT_FS, GFS2_FORMAT_MULTI, | |
193 | sb->sb_fs_format, sb->sb_multihost_format); | |
194 | printk(KERN_INFO | |
195 | "GFS2: Use the \"upgrade\" mount option to upgrade " | |
196 | "the FS\n"); | |
197 | printk(KERN_INFO "GFS2: See the manual for more details\n"); | |
198 | return -EINVAL; | |
199 | } | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static void end_bio_io_page(struct bio *bio, int error) | |
205 | { | |
206 | struct page *page = bio->bi_private; | |
207 | ||
208 | if (!error) | |
209 | SetPageUptodate(page); | |
210 | else | |
211 | printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); | |
212 | unlock_page(page); | |
213 | } | |
214 | ||
215 | static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf) | |
216 | { | |
217 | const struct gfs2_sb *str = buf; | |
218 | ||
219 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
220 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
221 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); | |
222 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); | |
223 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
224 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
225 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
226 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
227 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
228 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
229 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
230 | ||
231 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
232 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
02e3cc70 | 233 | memcpy(sb->sb_uuid, str->sb_uuid, 16); |
9b8df98f SW |
234 | } |
235 | ||
236 | /** | |
237 | * gfs2_read_super - Read the gfs2 super block from disk | |
238 | * @sdp: The GFS2 super block | |
239 | * @sector: The location of the super block | |
240 | * @error: The error code to return | |
241 | * | |
242 | * This uses the bio functions to read the super block from disk | |
243 | * because we want to be 100% sure that we never read cached data. | |
244 | * A super block is read twice only during each GFS2 mount and is | |
245 | * never written to by the filesystem. The first time its read no | |
246 | * locks are held, and the only details which are looked at are those | |
247 | * relating to the locking protocol. Once locking is up and working, | |
248 | * the sb is read again under the lock to establish the location of | |
249 | * the master directory (contains pointers to journals etc) and the | |
250 | * root directory. | |
251 | * | |
252 | * Returns: 0 on success or error | |
253 | */ | |
254 | ||
255 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector) | |
256 | { | |
257 | struct super_block *sb = sdp->sd_vfs; | |
258 | struct gfs2_sb *p; | |
259 | struct page *page; | |
260 | struct bio *bio; | |
261 | ||
262 | page = alloc_page(GFP_NOFS); | |
263 | if (unlikely(!page)) | |
264 | return -ENOBUFS; | |
265 | ||
266 | ClearPageUptodate(page); | |
267 | ClearPageDirty(page); | |
268 | lock_page(page); | |
269 | ||
270 | bio = bio_alloc(GFP_NOFS, 1); | |
9b8df98f SW |
271 | bio->bi_sector = sector * (sb->s_blocksize >> 9); |
272 | bio->bi_bdev = sb->s_bdev; | |
273 | bio_add_page(bio, page, PAGE_SIZE, 0); | |
274 | ||
275 | bio->bi_end_io = end_bio_io_page; | |
276 | bio->bi_private = page; | |
7b6d91da | 277 | submit_bio(READ_SYNC | REQ_META, bio); |
9b8df98f SW |
278 | wait_on_page_locked(page); |
279 | bio_put(bio); | |
280 | if (!PageUptodate(page)) { | |
281 | __free_page(page); | |
282 | return -EIO; | |
283 | } | |
284 | p = kmap(page); | |
285 | gfs2_sb_in(&sdp->sd_sb, p); | |
286 | kunmap(page); | |
287 | __free_page(page); | |
288 | return 0; | |
289 | } | |
6bac243f | 290 | |
9b8df98f SW |
291 | /** |
292 | * gfs2_read_sb - Read super block | |
293 | * @sdp: The GFS2 superblock | |
9b8df98f SW |
294 | * @silent: Don't print message if mount fails |
295 | * | |
296 | */ | |
297 | ||
6bac243f | 298 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f SW |
299 | { |
300 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
301 | u32 tmp_blocks; | |
302 | unsigned int x; | |
303 | int error; | |
304 | ||
305 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
306 | if (error) { | |
307 | if (!silent) | |
308 | fs_err(sdp, "can't read superblock\n"); | |
309 | return error; | |
310 | } | |
311 | ||
312 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
313 | if (error) | |
314 | return error; | |
315 | ||
316 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
317 | GFS2_BASIC_BLOCK_SHIFT; | |
318 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
319 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - | |
320 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
321 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
322 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
323 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); | |
324 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
325 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
326 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
327 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
328 | sizeof(struct gfs2_meta_header)) / | |
329 | sizeof(struct gfs2_quota_change); | |
330 | ||
331 | /* Compute maximum reservation required to add a entry to a directory */ | |
332 | ||
333 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), | |
334 | sdp->sd_jbsize); | |
335 | ||
336 | ind_blocks = 0; | |
337 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
338 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
339 | ind_blocks += tmp_blocks; | |
340 | } | |
341 | ||
342 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
343 | ||
344 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
345 | ||
346 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
347 | sizeof(struct gfs2_dinode); | |
348 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
349 | for (x = 2;; x++) { | |
350 | u64 space, d; | |
351 | u32 m; | |
352 | ||
353 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
354 | d = space; | |
355 | m = do_div(d, sdp->sd_inptrs); | |
356 | ||
357 | if (d != sdp->sd_heightsize[x - 1] || m) | |
358 | break; | |
359 | sdp->sd_heightsize[x] = space; | |
360 | } | |
361 | sdp->sd_max_height = x; | |
362 | sdp->sd_heightsize[x] = ~0; | |
363 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
364 | ||
365 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - | |
366 | sizeof(struct gfs2_dinode); | |
367 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; | |
368 | for (x = 2;; x++) { | |
369 | u64 space, d; | |
370 | u32 m; | |
371 | ||
372 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; | |
373 | d = space; | |
374 | m = do_div(d, sdp->sd_inptrs); | |
375 | ||
376 | if (d != sdp->sd_jheightsize[x - 1] || m) | |
377 | break; | |
378 | sdp->sd_jheightsize[x] = space; | |
379 | } | |
380 | sdp->sd_max_jheight = x; | |
381 | sdp->sd_jheightsize[x] = ~0; | |
382 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
b3b94faa DT |
387 | static int init_names(struct gfs2_sbd *sdp, int silent) |
388 | { | |
b3b94faa DT |
389 | char *proto, *table; |
390 | int error = 0; | |
391 | ||
392 | proto = sdp->sd_args.ar_lockproto; | |
393 | table = sdp->sd_args.ar_locktable; | |
394 | ||
395 | /* Try to autodetect */ | |
396 | ||
397 | if (!proto[0] || !table[0]) { | |
bb8d8a6f SW |
398 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
399 | if (error) | |
400 | return error; | |
3cf1e7be SW |
401 | |
402 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
403 | if (error) |
404 | goto out; | |
405 | ||
406 | if (!proto[0]) | |
3cf1e7be | 407 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 408 | if (!table[0]) |
3cf1e7be | 409 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
410 | } |
411 | ||
412 | if (!table[0]) | |
413 | table = sdp->sd_vfs->s_id; | |
414 | ||
00377d8e JD |
415 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
416 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); | |
b3b94faa | 417 | |
5d35e31f DC |
418 | table = sdp->sd_table_name; |
419 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
420 | *table = '_'; |
421 | ||
a91ea69f | 422 | out: |
b3b94faa DT |
423 | return error; |
424 | } | |
425 | ||
426 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
427 | int undo) | |
428 | { | |
b3b94faa DT |
429 | int error = 0; |
430 | ||
431 | if (undo) | |
432 | goto fail_trans; | |
433 | ||
b3b94faa DT |
434 | error = gfs2_glock_nq_num(sdp, |
435 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
436 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
437 | mount_gh); | |
438 | if (error) { | |
439 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
440 | goto fail; | |
441 | } | |
442 | ||
443 | error = gfs2_glock_nq_num(sdp, | |
444 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
445 | LM_ST_SHARED, | |
579b78a4 | 446 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
447 | &sdp->sd_live_gh); |
448 | if (error) { | |
449 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
450 | goto fail_mount; | |
451 | } | |
452 | ||
453 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
454 | CREATE, &sdp->sd_rename_gl); | |
455 | if (error) { | |
456 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
457 | goto fail_live; | |
458 | } | |
459 | ||
460 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
461 | CREATE, &sdp->sd_trans_gl); | |
462 | if (error) { | |
463 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
464 | goto fail_rename; | |
465 | } | |
b3b94faa DT |
466 | |
467 | return 0; | |
468 | ||
feaa7bba | 469 | fail_trans: |
b3b94faa | 470 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 471 | fail_rename: |
b3b94faa | 472 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 473 | fail_live: |
b3b94faa | 474 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 475 | fail_mount: |
b3b94faa | 476 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 477 | fail: |
b3b94faa DT |
478 | return error; |
479 | } | |
480 | ||
9b8df98f SW |
481 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
482 | u64 no_addr, const char *name) | |
f42faf4f | 483 | { |
9b8df98f SW |
484 | struct gfs2_sbd *sdp = sb->s_fs_info; |
485 | struct dentry *dentry; | |
486 | struct inode *inode; | |
487 | ||
1a0eae88 | 488 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); |
9b8df98f SW |
489 | if (IS_ERR(inode)) { |
490 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
491 | return PTR_ERR(inode); | |
492 | } | |
493 | dentry = d_alloc_root(inode); | |
494 | if (!dentry) { | |
495 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
496 | iput(inode); | |
497 | return -ENOMEM; | |
498 | } | |
499 | dentry->d_op = &gfs2_dops; | |
500 | *dptr = dentry; | |
501 | return 0; | |
f42faf4f SW |
502 | } |
503 | ||
9b8df98f | 504 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
505 | { |
506 | struct super_block *sb = sdp->sd_vfs; | |
507 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 508 | u64 no_addr; |
9b8df98f | 509 | int ret; |
b3b94faa | 510 | |
9b8df98f SW |
511 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
512 | LM_ST_SHARED, 0, &sb_gh); | |
513 | if (ret) { | |
514 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
515 | return ret; | |
b3b94faa | 516 | } |
907b9bce | 517 | |
6bac243f | 518 | ret = gfs2_read_sb(sdp, silent); |
9b8df98f SW |
519 | if (ret) { |
520 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
521 | goto out; |
522 | } | |
523 | ||
524 | /* Set up the buffer cache and SB for real */ | |
e1defc4f | 525 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
9b8df98f | 526 | ret = -EINVAL; |
b3b94faa DT |
527 | fs_err(sdp, "FS block size (%u) is too small for device " |
528 | "block size (%u)\n", | |
e1defc4f | 529 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
b3b94faa DT |
530 | goto out; |
531 | } | |
532 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 533 | ret = -EINVAL; |
b3b94faa DT |
534 | fs_err(sdp, "FS block size (%u) is too big for machine " |
535 | "page size (%u)\n", | |
536 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
537 | goto out; | |
538 | } | |
b3b94faa DT |
539 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
540 | ||
f42faf4f | 541 | /* Get the root inode */ |
dbb7cae2 | 542 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
543 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
544 | if (ret) | |
f42faf4f | 545 | goto out; |
b3b94faa | 546 | |
9b8df98f SW |
547 | /* Get the master inode */ |
548 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
549 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
550 | if (ret) { | |
551 | dput(sdp->sd_root_dir); | |
552 | goto out; | |
553 | } | |
554 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 555 | out: |
b3b94faa | 556 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 557 | return ret; |
b3b94faa DT |
558 | } |
559 | ||
da6dd40d BP |
560 | /** |
561 | * map_journal_extents - create a reusable "extent" mapping from all logical | |
562 | * blocks to all physical blocks for the given journal. This will save | |
563 | * us time when writing journal blocks. Most journals will have only one | |
564 | * extent that maps all their logical blocks. That's because gfs2.mkfs | |
565 | * arranges the journal blocks sequentially to maximize performance. | |
566 | * So the extent would map the first block for the entire file length. | |
567 | * However, gfs2_jadd can happen while file activity is happening, so | |
568 | * those journals may not be sequential. Less likely is the case where | |
569 | * the users created their own journals by mounting the metafs and | |
570 | * laying it out. But it's still possible. These journals might have | |
571 | * several extents. | |
572 | * | |
573 | * TODO: This should be done in bigger chunks rather than one block at a time, | |
574 | * but since it's only done at mount time, I'm not worried about the | |
575 | * time it takes. | |
576 | */ | |
577 | static int map_journal_extents(struct gfs2_sbd *sdp) | |
578 | { | |
579 | struct gfs2_jdesc *jd = sdp->sd_jdesc; | |
580 | unsigned int lb; | |
581 | u64 db, prev_db; /* logical block, disk block, prev disk block */ | |
582 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); | |
583 | struct gfs2_journal_extent *jext = NULL; | |
584 | struct buffer_head bh; | |
585 | int rc = 0; | |
586 | ||
da6dd40d BP |
587 | prev_db = 0; |
588 | ||
c9e98886 | 589 | for (lb = 0; lb < ip->i_disksize >> sdp->sd_sb.sb_bsize_shift; lb++) { |
da6dd40d BP |
590 | bh.b_state = 0; |
591 | bh.b_blocknr = 0; | |
592 | bh.b_size = 1 << ip->i_inode.i_blkbits; | |
593 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); | |
594 | db = bh.b_blocknr; | |
595 | if (rc || !db) { | |
596 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" | |
597 | "%u db=%llu\n", rc, lb, (unsigned long long)db); | |
598 | break; | |
599 | } | |
600 | if (!prev_db || db != prev_db + 1) { | |
601 | jext = kzalloc(sizeof(struct gfs2_journal_extent), | |
602 | GFP_KERNEL); | |
603 | if (!jext) { | |
604 | printk(KERN_INFO "GFS2 error: out of memory " | |
605 | "mapping journal extents.\n"); | |
606 | rc = -ENOMEM; | |
607 | break; | |
608 | } | |
609 | jext->dblock = db; | |
610 | jext->lblock = lb; | |
611 | jext->blocks = 1; | |
612 | list_add_tail(&jext->extent_list, &jd->extent_list); | |
613 | } else { | |
614 | jext->blocks++; | |
615 | } | |
616 | prev_db = db; | |
617 | } | |
618 | return rc; | |
619 | } | |
620 | ||
f057f6cd | 621 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
da755fdb | 622 | { |
f057f6cd SW |
623 | char *message = "FIRSTMOUNT=Done"; |
624 | char *envp[] = { message, NULL }; | |
625 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
626 | ls->ls_first_done = 1; | |
627 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); | |
da755fdb SW |
628 | } |
629 | ||
b5289681 SW |
630 | /** |
631 | * gfs2_jindex_hold - Grab a lock on the jindex | |
632 | * @sdp: The GFS2 superblock | |
633 | * @ji_gh: the holder for the jindex glock | |
634 | * | |
635 | * Returns: errno | |
636 | */ | |
637 | ||
638 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) | |
639 | { | |
640 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); | |
641 | struct qstr name; | |
642 | char buf[20]; | |
643 | struct gfs2_jdesc *jd; | |
644 | int error; | |
645 | ||
646 | name.name = buf; | |
647 | ||
648 | mutex_lock(&sdp->sd_jindex_mutex); | |
649 | ||
650 | for (;;) { | |
651 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); | |
652 | if (error) | |
653 | break; | |
654 | ||
655 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
656 | name.hash = gfs2_disk_hash(name.name, name.len); | |
657 | ||
658 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
659 | if (error == -ENOENT) { | |
660 | error = 0; | |
661 | break; | |
662 | } | |
663 | ||
664 | gfs2_glock_dq_uninit(ji_gh); | |
665 | ||
666 | if (error) | |
667 | break; | |
668 | ||
669 | error = -ENOMEM; | |
670 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
671 | if (!jd) | |
672 | break; | |
673 | ||
674 | INIT_LIST_HEAD(&jd->extent_list); | |
6ecd7c2d | 675 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 SW |
676 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
677 | if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { | |
678 | if (!jd->jd_inode) | |
679 | error = -ENOENT; | |
680 | else | |
681 | error = PTR_ERR(jd->jd_inode); | |
682 | kfree(jd); | |
683 | break; | |
684 | } | |
685 | ||
686 | spin_lock(&sdp->sd_jindex_spin); | |
687 | jd->jd_jid = sdp->sd_journals++; | |
688 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); | |
689 | spin_unlock(&sdp->sd_jindex_spin); | |
690 | } | |
691 | ||
692 | mutex_unlock(&sdp->sd_jindex_mutex); | |
693 | ||
694 | return error; | |
695 | } | |
696 | ||
b3b94faa DT |
697 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
698 | { | |
9b8df98f | 699 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa | 700 | struct gfs2_holder ji_gh; |
5c676f6d | 701 | struct gfs2_inode *ip; |
b3b94faa DT |
702 | int jindex = 1; |
703 | int error = 0; | |
704 | ||
705 | if (undo) { | |
706 | jindex = 0; | |
fe64d517 | 707 | goto fail_jinode_gh; |
b3b94faa DT |
708 | } |
709 | ||
9b8df98f | 710 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 711 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 712 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 713 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 714 | } |
feaa7bba | 715 | ip = GFS2_I(sdp->sd_jindex); |
b3b94faa DT |
716 | |
717 | /* Load in the journal index special file */ | |
718 | ||
719 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
720 | if (error) { | |
721 | fs_err(sdp, "can't read journal index: %d\n", error); | |
722 | goto fail; | |
723 | } | |
724 | ||
0e5a9fb0 | 725 | error = -EUSERS; |
b3b94faa DT |
726 | if (!gfs2_jindex_size(sdp)) { |
727 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 728 | goto fail_jindex; |
b3b94faa DT |
729 | } |
730 | ||
731 | if (sdp->sd_args.ar_spectator) { | |
732 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 733 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
734 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
735 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
736 | } else { |
737 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
738 | fs_err(sdp, "can't mount journal #%u\n", | |
739 | sdp->sd_lockstruct.ls_jid); | |
740 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
741 | gfs2_jindex_size(sdp), | |
742 | gfs2_jindex_size(sdp) - 1); | |
743 | goto fail_jindex; | |
744 | } | |
745 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
746 | ||
feaa7bba | 747 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
748 | &gfs2_journal_glops, |
749 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
750 | &sdp->sd_journal_gh); | |
751 | if (error) { | |
752 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
753 | goto fail_jindex; | |
754 | } | |
755 | ||
feaa7bba SW |
756 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
757 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 758 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
759 | &sdp->sd_jinode_gh); |
760 | if (error) { | |
761 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
762 | error); | |
763 | goto fail_journal_gh; | |
764 | } | |
765 | ||
766 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
767 | if (error) { | |
768 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
769 | sdp->sd_jdesc->jd_jid, error); | |
770 | goto fail_jinode_gh; | |
771 | } | |
fd041f0b | 772 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
773 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
774 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
775 | |
776 | /* Map the extents for this journal's blocks */ | |
777 | map_journal_extents(sdp); | |
b3b94faa | 778 | } |
63997775 | 779 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa DT |
780 | |
781 | if (sdp->sd_lockstruct.ls_first) { | |
782 | unsigned int x; | |
783 | for (x = 0; x < sdp->sd_journals; x++) { | |
6ecd7c2d TH |
784 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), |
785 | true); | |
b3b94faa DT |
786 | if (error) { |
787 | fs_err(sdp, "error recovering journal %u: %d\n", | |
788 | x, error); | |
789 | goto fail_jinode_gh; | |
790 | } | |
791 | } | |
792 | ||
f057f6cd | 793 | gfs2_others_may_mount(sdp); |
b3b94faa | 794 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 795 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
796 | if (error) { |
797 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
798 | goto fail_jinode_gh; | |
799 | } | |
800 | } | |
801 | ||
802 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
803 | gfs2_glock_dq_uninit(&ji_gh); | |
804 | jindex = 0; | |
805 | ||
b3b94faa DT |
806 | return 0; |
807 | ||
a91ea69f | 808 | fail_jinode_gh: |
b3b94faa DT |
809 | if (!sdp->sd_args.ar_spectator) |
810 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 811 | fail_journal_gh: |
b3b94faa DT |
812 | if (!sdp->sd_args.ar_spectator) |
813 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 814 | fail_jindex: |
b3b94faa DT |
815 | gfs2_jindex_free(sdp); |
816 | if (jindex) | |
817 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 818 | fail: |
f42faf4f | 819 | iput(sdp->sd_jindex); |
b3b94faa DT |
820 | return error; |
821 | } | |
822 | ||
b3b94faa DT |
823 | |
824 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
825 | { | |
b3b94faa | 826 | int error = 0; |
5c676f6d | 827 | struct gfs2_inode *ip; |
9b8df98f | 828 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
829 | |
830 | if (undo) | |
f42faf4f SW |
831 | goto fail_qinode; |
832 | ||
f42faf4f SW |
833 | error = init_journal(sdp, undo); |
834 | if (error) | |
9b8df98f | 835 | goto fail; |
b3b94faa | 836 | |
b3b94faa | 837 | /* Read in the master statfs inode */ |
9b8df98f | 838 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
c752666c SW |
839 | if (IS_ERR(sdp->sd_statfs_inode)) { |
840 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 841 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
8d8291ae | 842 | goto fail_journal; |
b3b94faa DT |
843 | } |
844 | ||
845 | /* Read in the resource index inode */ | |
9b8df98f | 846 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
847 | if (IS_ERR(sdp->sd_rindex)) { |
848 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
849 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
850 | goto fail_statfs; | |
851 | } | |
feaa7bba | 852 | ip = GFS2_I(sdp->sd_rindex); |
cf45b752 | 853 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
854 | |
855 | /* Read in the quota inode */ | |
9b8df98f | 856 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
857 | if (IS_ERR(sdp->sd_quota_inode)) { |
858 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
859 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
860 | goto fail_rindex; | |
861 | } | |
b3b94faa DT |
862 | return 0; |
863 | ||
f42faf4f SW |
864 | fail_qinode: |
865 | iput(sdp->sd_quota_inode); | |
f42faf4f | 866 | fail_rindex: |
b3b94faa | 867 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 868 | iput(sdp->sd_rindex); |
f42faf4f SW |
869 | fail_statfs: |
870 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
871 | fail_journal: |
872 | init_journal(sdp, UNDO); | |
f42faf4f | 873 | fail: |
b3b94faa DT |
874 | return error; |
875 | } | |
876 | ||
877 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
878 | { | |
f42faf4f | 879 | struct inode *pn = NULL; |
b3b94faa DT |
880 | char buf[30]; |
881 | int error = 0; | |
5c676f6d | 882 | struct gfs2_inode *ip; |
9b8df98f | 883 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
884 | |
885 | if (sdp->sd_args.ar_spectator) | |
886 | return 0; | |
887 | ||
888 | if (undo) | |
889 | goto fail_qc_gh; | |
890 | ||
9b8df98f | 891 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
892 | if (IS_ERR(pn)) { |
893 | error = PTR_ERR(pn); | |
b3b94faa DT |
894 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
895 | return error; | |
896 | } | |
897 | ||
b3b94faa | 898 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
899 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
900 | if (IS_ERR(sdp->sd_sc_inode)) { | |
901 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa | 902 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
8d8291ae | 903 | goto fail; |
b3b94faa DT |
904 | } |
905 | ||
b3b94faa | 906 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
907 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
908 | if (IS_ERR(sdp->sd_qc_inode)) { | |
909 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
910 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
911 | goto fail_ut_i; | |
912 | } | |
913 | ||
f42faf4f | 914 | iput(pn); |
b3b94faa DT |
915 | pn = NULL; |
916 | ||
feaa7bba | 917 | ip = GFS2_I(sdp->sd_sc_inode); |
8d8291ae | 918 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
919 | &sdp->sd_sc_gh); |
920 | if (error) { | |
921 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
8d8291ae | 922 | goto fail_qc_i; |
b3b94faa DT |
923 | } |
924 | ||
feaa7bba | 925 | ip = GFS2_I(sdp->sd_qc_inode); |
8d8291ae | 926 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
927 | &sdp->sd_qc_gh); |
928 | if (error) { | |
929 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
930 | goto fail_ut_gh; | |
931 | } | |
932 | ||
933 | return 0; | |
934 | ||
a91ea69f | 935 | fail_qc_gh: |
b3b94faa | 936 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 937 | fail_ut_gh: |
b3b94faa | 938 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 939 | fail_qc_i: |
f42faf4f | 940 | iput(sdp->sd_qc_inode); |
a91ea69f | 941 | fail_ut_i: |
f42faf4f | 942 | iput(sdp->sd_sc_inode); |
a91ea69f | 943 | fail: |
b3b94faa | 944 | if (pn) |
f42faf4f | 945 | iput(pn); |
b3b94faa DT |
946 | return error; |
947 | } | |
948 | ||
949 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
950 | { | |
951 | struct task_struct *p; | |
952 | int error = 0; | |
953 | ||
954 | if (undo) | |
feaa7bba | 955 | goto fail_quotad; |
b3b94faa | 956 | |
b3b94faa DT |
957 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); |
958 | error = IS_ERR(p); | |
959 | if (error) { | |
960 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
961 | return error; | |
962 | } | |
963 | sdp->sd_logd_process = p; | |
964 | ||
b3b94faa DT |
965 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); |
966 | error = IS_ERR(p); | |
967 | if (error) { | |
968 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
969 | goto fail; | |
970 | } | |
971 | sdp->sd_quotad_process = p; | |
972 | ||
b3b94faa DT |
973 | return 0; |
974 | ||
b3b94faa | 975 | |
feaa7bba | 976 | fail_quotad: |
b3b94faa | 977 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 978 | fail: |
b3b94faa | 979 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
980 | return error; |
981 | } | |
da755fdb | 982 | |
f057f6cd SW |
983 | static const match_table_t nolock_tokens = { |
984 | { Opt_jid, "jid=%d\n", }, | |
985 | { Opt_err, NULL }, | |
986 | }; | |
987 | ||
8f05228e SW |
988 | static void nolock_put_lock(struct kmem_cache *cachep, struct gfs2_glock *gl) |
989 | { | |
990 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
991 | kmem_cache_free(cachep, gl); | |
992 | if (atomic_dec_and_test(&sdp->sd_glock_disposal)) | |
993 | wake_up(&sdp->sd_glock_wait); | |
994 | } | |
995 | ||
f057f6cd SW |
996 | static const struct lm_lockops nolock_ops = { |
997 | .lm_proto_name = "lock_nolock", | |
8f05228e | 998 | .lm_put_lock = nolock_put_lock, |
f057f6cd SW |
999 | .lm_tokens = &nolock_tokens, |
1000 | }; | |
1001 | ||
da755fdb SW |
1002 | /** |
1003 | * gfs2_lm_mount - mount a locking protocol | |
1004 | * @sdp: the filesystem | |
3ad2f3fb | 1005 | * @args: mount arguments |
da755fdb SW |
1006 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
1007 | * | |
1008 | * Returns: errno | |
1009 | */ | |
1010 | ||
1011 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
1012 | { | |
f057f6cd SW |
1013 | const struct lm_lockops *lm; |
1014 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
1015 | struct gfs2_args *args = &sdp->sd_args; | |
1016 | const char *proto = sdp->sd_proto_name; | |
1017 | const char *table = sdp->sd_table_name; | |
1018 | const char *fsname; | |
1019 | char *o, *options; | |
1020 | int ret; | |
da755fdb | 1021 | |
f057f6cd SW |
1022 | if (!strcmp("lock_nolock", proto)) { |
1023 | lm = &nolock_ops; | |
1024 | sdp->sd_args.ar_localflocks = 1; | |
1025 | sdp->sd_args.ar_localcaching = 1; | |
1026 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM | |
1027 | } else if (!strcmp("lock_dlm", proto)) { | |
1028 | lm = &gfs2_dlm_ops; | |
1029 | #endif | |
1030 | } else { | |
1031 | printk(KERN_INFO "GFS2: can't find protocol %s\n", proto); | |
1032 | return -ENOENT; | |
1033 | } | |
da755fdb SW |
1034 | |
1035 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
1036 | ||
f057f6cd SW |
1037 | ls->ls_ops = lm; |
1038 | ls->ls_first = 1; | |
da755fdb | 1039 | |
f057f6cd SW |
1040 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
1041 | substring_t tmp[MAX_OPT_ARGS]; | |
1042 | int token, option; | |
1043 | ||
1044 | if (!o || !*o) | |
1045 | continue; | |
1046 | ||
1047 | token = match_token(o, *lm->lm_tokens, tmp); | |
1048 | switch (token) { | |
1049 | case Opt_jid: | |
1050 | ret = match_int(&tmp[0], &option); | |
1051 | if (ret || option < 0) | |
1052 | goto hostdata_error; | |
ba6e9364 SW |
1053 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
1054 | ls->ls_jid = option; | |
f057f6cd SW |
1055 | break; |
1056 | case Opt_id: | |
2b88f7c5 | 1057 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
1058 | break; |
1059 | case Opt_first: | |
1060 | ret = match_int(&tmp[0], &option); | |
1061 | if (ret || (option != 0 && option != 1)) | |
1062 | goto hostdata_error; | |
1063 | ls->ls_first = option; | |
1064 | break; | |
1065 | case Opt_nodir: | |
1066 | ret = match_int(&tmp[0], &option); | |
1067 | if (ret || (option != 0 && option != 1)) | |
1068 | goto hostdata_error; | |
1069 | ls->ls_nodir = option; | |
1070 | break; | |
1071 | case Opt_err: | |
1072 | default: | |
1073 | hostdata_error: | |
1074 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
1075 | return -EINVAL; | |
1076 | } | |
da755fdb SW |
1077 | } |
1078 | ||
1079 | if (sdp->sd_args.ar_spectator) | |
1080 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table); | |
1081 | else | |
1082 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table, | |
1083 | sdp->sd_lockstruct.ls_jid); | |
1084 | ||
f057f6cd SW |
1085 | fsname = strchr(table, ':'); |
1086 | if (fsname) | |
1087 | fsname++; | |
1088 | if (lm->lm_mount == NULL) { | |
1089 | fs_info(sdp, "Now mounting FS...\n"); | |
1090 | return 0; | |
da755fdb | 1091 | } |
f057f6cd SW |
1092 | ret = lm->lm_mount(sdp, fsname); |
1093 | if (ret == 0) | |
1094 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); | |
1095 | return ret; | |
da755fdb SW |
1096 | } |
1097 | ||
1098 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1099 | { | |
f057f6cd SW |
1100 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
1101 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) && | |
1102 | lm->lm_unmount) | |
1103 | lm->lm_unmount(sdp); | |
da755fdb | 1104 | } |
b3b94faa | 1105 | |
ba6e9364 SW |
1106 | static int gfs2_journalid_wait(void *word) |
1107 | { | |
1108 | if (signal_pending(current)) | |
1109 | return -EINTR; | |
1110 | schedule(); | |
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | static int wait_on_journal(struct gfs2_sbd *sdp) | |
1115 | { | |
1116 | if (sdp->sd_args.ar_spectator) | |
1117 | return 0; | |
1118 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) | |
1119 | return 0; | |
1120 | ||
1121 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, gfs2_journalid_wait, TASK_INTERRUPTIBLE); | |
1122 | } | |
1123 | ||
8633ecfa SW |
1124 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
1125 | { | |
1126 | struct super_block *sb = sdp->sd_vfs; | |
1127 | char ro[20]; | |
1128 | char spectator[20]; | |
1129 | char *envp[] = { ro, spectator, NULL }; | |
1130 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
1131 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
1132 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
1133 | } | |
1134 | ||
b3b94faa DT |
1135 | /** |
1136 | * fill_super - Read in superblock | |
1137 | * @sb: The VFS superblock | |
1138 | * @data: Mount options | |
1139 | * @silent: Don't complain if it's not a GFS2 filesystem | |
1140 | * | |
1141 | * Returns: errno | |
1142 | */ | |
1143 | ||
f55073ff | 1144 | static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent) |
b3b94faa DT |
1145 | { |
1146 | struct gfs2_sbd *sdp; | |
1147 | struct gfs2_holder mount_gh; | |
1148 | int error; | |
1149 | ||
1150 | sdp = init_sbd(sb); | |
1151 | if (!sdp) { | |
d92a8d48 | 1152 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1153 | return -ENOMEM; |
1154 | } | |
f55073ff | 1155 | sdp->sd_args = *args; |
b3b94faa | 1156 | |
fe64d517 | 1157 | if (sdp->sd_args.ar_spectator) { |
6f04c1c7 | 1158 | sb->s_flags |= MS_RDONLY; |
fe64d517 SW |
1159 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); |
1160 | } | |
6f04c1c7 SW |
1161 | if (sdp->sd_args.ar_posix_acl) |
1162 | sb->s_flags |= MS_POSIXACL; | |
f25934c5 CH |
1163 | if (sdp->sd_args.ar_nobarrier) |
1164 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1165 | |
719ee344 SW |
1166 | sb->s_magic = GFS2_MAGIC; |
1167 | sb->s_op = &gfs2_super_ops; | |
1168 | sb->s_export_op = &gfs2_export_ops; | |
40b78a32 | 1169 | sb->s_xattr = gfs2_xattr_handlers; |
cc632e7f SW |
1170 | sb->s_qcop = &gfs2_quotactl_ops; |
1171 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; | |
719ee344 SW |
1172 | sb->s_time_gran = 1; |
1173 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1174 | |
1175 | /* Set up the buffer cache and fill in some fake block size values | |
1176 | to allow us to read-in the on-disk superblock. */ | |
1177 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1178 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1179 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1180 | GFS2_BASIC_BLOCK_SHIFT; | |
1181 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa | 1182 | |
5e687eac | 1183 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1184 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1185 | if (sdp->sd_args.ar_statfs_quantum) { | |
1186 | sdp->sd_tune.gt_statfs_slow = 0; | |
1187 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
1188 | } | |
1189 | else { | |
1190 | sdp->sd_tune.gt_statfs_slow = 1; | |
1191 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1192 | } | |
48c2b613 | 1193 | |
b3b94faa DT |
1194 | error = init_names(sdp, silent); |
1195 | if (error) | |
1196 | goto fail; | |
1197 | ||
7c52b166 RP |
1198 | gfs2_create_debugfs_file(sdp); |
1199 | ||
b3b94faa DT |
1200 | error = gfs2_sys_fs_add(sdp); |
1201 | if (error) | |
1202 | goto fail; | |
1203 | ||
1204 | error = gfs2_lm_mount(sdp, silent); | |
1205 | if (error) | |
1206 | goto fail_sys; | |
1207 | ||
1208 | error = init_locking(sdp, &mount_gh, DO); | |
1209 | if (error) | |
1210 | goto fail_lm; | |
1211 | ||
9b8df98f | 1212 | error = init_sb(sdp, silent); |
b3b94faa DT |
1213 | if (error) |
1214 | goto fail_locking; | |
b3b94faa | 1215 | |
ba6e9364 SW |
1216 | error = wait_on_journal(sdp); |
1217 | if (error) | |
1218 | goto fail_sb; | |
1219 | ||
b3b94faa DT |
1220 | error = init_inodes(sdp, DO); |
1221 | if (error) | |
f42faf4f | 1222 | goto fail_sb; |
b3b94faa DT |
1223 | |
1224 | error = init_per_node(sdp, DO); | |
1225 | if (error) | |
1226 | goto fail_inodes; | |
1227 | ||
1228 | error = gfs2_statfs_init(sdp); | |
1229 | if (error) { | |
1230 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1231 | goto fail_per_node; | |
1232 | } | |
1233 | ||
1234 | error = init_threads(sdp, DO); | |
1235 | if (error) | |
1236 | goto fail_per_node; | |
1237 | ||
1238 | if (!(sb->s_flags & MS_RDONLY)) { | |
1239 | error = gfs2_make_fs_rw(sdp); | |
1240 | if (error) { | |
1241 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
1242 | goto fail_threads; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | gfs2_glock_dq_uninit(&mount_gh); | |
8633ecfa | 1247 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1248 | return 0; |
1249 | ||
a91ea69f | 1250 | fail_threads: |
b3b94faa | 1251 | init_threads(sdp, UNDO); |
a91ea69f | 1252 | fail_per_node: |
b3b94faa | 1253 | init_per_node(sdp, UNDO); |
a91ea69f | 1254 | fail_inodes: |
b3b94faa | 1255 | init_inodes(sdp, UNDO); |
a91ea69f | 1256 | fail_sb: |
9b8df98f SW |
1257 | if (sdp->sd_root_dir) |
1258 | dput(sdp->sd_root_dir); | |
1259 | if (sdp->sd_master_dir) | |
1260 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1261 | if (sb->s_root) |
1262 | dput(sb->s_root); | |
9b8df98f | 1263 | sb->s_root = NULL; |
a91ea69f | 1264 | fail_locking: |
b3b94faa | 1265 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1266 | fail_lm: |
c1184f8a | 1267 | invalidate_inodes(sb); |
fefc03bf | 1268 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1269 | gfs2_lm_unmount(sdp); |
a91ea69f | 1270 | fail_sys: |
b3b94faa | 1271 | gfs2_sys_fs_del(sdp); |
a91ea69f | 1272 | fail: |
5f882096 | 1273 | gfs2_delete_debugfs_file(sdp); |
a2c45807 | 1274 | kfree(sdp); |
5c676f6d | 1275 | sb->s_fs_info = NULL; |
b3b94faa DT |
1276 | return error; |
1277 | } | |
1278 | ||
f55073ff | 1279 | static int set_gfs2_super(struct super_block *s, void *data) |
b3b94faa | 1280 | { |
f55073ff SW |
1281 | s->s_bdev = data; |
1282 | s->s_dev = s->s_bdev->bd_dev; | |
1283 | ||
1284 | /* | |
1285 | * We set the bdi here to the queue backing, file systems can | |
1286 | * overwrite this in ->fill_super() | |
1287 | */ | |
1288 | s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info; | |
1289 | return 0; | |
86384605 AD |
1290 | } |
1291 | ||
f55073ff | 1292 | static int test_gfs2_super(struct super_block *s, void *ptr) |
f6d03139 SW |
1293 | { |
1294 | struct block_device *bdev = ptr; | |
1295 | return (bdev == s->s_bdev); | |
1296 | } | |
1297 | ||
f55073ff SW |
1298 | /** |
1299 | * gfs2_get_sb - Get the GFS2 superblock | |
1300 | * @fs_type: The GFS2 filesystem type | |
1301 | * @flags: Mount flags | |
1302 | * @dev_name: The name of the device | |
1303 | * @data: The mount arguments | |
1304 | * @mnt: The vfsmnt for this mount | |
1305 | * | |
1306 | * Q. Why not use get_sb_bdev() ? | |
1307 | * A. We need to select one of two root directories to mount, independent | |
1308 | * of whether this is the initial, or subsequent, mount of this sb | |
1309 | * | |
1310 | * Returns: 0 or -ve on error | |
1311 | */ | |
1312 | ||
1313 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, | |
1314 | const char *dev_name, void *data, struct vfsmount *mnt) | |
1315 | { | |
1316 | struct block_device *bdev; | |
1317 | struct super_block *s; | |
1318 | fmode_t mode = FMODE_READ; | |
1319 | int error; | |
1320 | struct gfs2_args args; | |
1321 | struct gfs2_sbd *sdp; | |
1322 | ||
1323 | if (!(flags & MS_RDONLY)) | |
1324 | mode |= FMODE_WRITE; | |
1325 | ||
1326 | bdev = open_bdev_exclusive(dev_name, mode, fs_type); | |
1327 | if (IS_ERR(bdev)) | |
1328 | return PTR_ERR(bdev); | |
1329 | ||
1330 | /* | |
1331 | * once the super is inserted into the list by sget, s_umount | |
1332 | * will protect the lockfs code from trying to start a snapshot | |
1333 | * while we are mounting | |
1334 | */ | |
1335 | mutex_lock(&bdev->bd_fsfreeze_mutex); | |
1336 | if (bdev->bd_fsfreeze_count > 0) { | |
1337 | mutex_unlock(&bdev->bd_fsfreeze_mutex); | |
1338 | error = -EBUSY; | |
1339 | goto error_bdev; | |
1340 | } | |
1341 | s = sget(fs_type, test_gfs2_super, set_gfs2_super, bdev); | |
1342 | mutex_unlock(&bdev->bd_fsfreeze_mutex); | |
1343 | error = PTR_ERR(s); | |
1344 | if (IS_ERR(s)) | |
1345 | goto error_bdev; | |
1346 | ||
1347 | memset(&args, 0, sizeof(args)); | |
1348 | args.ar_quota = GFS2_QUOTA_DEFAULT; | |
1349 | args.ar_data = GFS2_DATA_DEFAULT; | |
5e687eac | 1350 | args.ar_commit = 30; |
3d3c10f2 BM |
1351 | args.ar_statfs_quantum = 30; |
1352 | args.ar_quota_quantum = 60; | |
f55073ff SW |
1353 | args.ar_errors = GFS2_ERRORS_DEFAULT; |
1354 | ||
1355 | error = gfs2_mount_args(&args, data); | |
1356 | if (error) { | |
1357 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); | |
1358 | if (s->s_root) | |
1359 | goto error_super; | |
1360 | deactivate_locked_super(s); | |
1361 | return error; | |
1362 | } | |
1363 | ||
1364 | if (s->s_root) { | |
1365 | error = -EBUSY; | |
1366 | if ((flags ^ s->s_flags) & MS_RDONLY) | |
1367 | goto error_super; | |
1368 | close_bdev_exclusive(bdev, mode); | |
1369 | } else { | |
1370 | char b[BDEVNAME_SIZE]; | |
1371 | ||
1372 | s->s_flags = flags; | |
1373 | s->s_mode = mode; | |
1374 | strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id)); | |
1375 | sb_set_blocksize(s, block_size(bdev)); | |
1376 | error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0); | |
1377 | if (error) { | |
1378 | deactivate_locked_super(s); | |
1379 | return error; | |
1380 | } | |
1381 | s->s_flags |= MS_ACTIVE; | |
1382 | bdev->bd_super = s; | |
1383 | } | |
1384 | ||
1385 | sdp = s->s_fs_info; | |
1386 | mnt->mnt_sb = s; | |
1387 | if (args.ar_meta) | |
1388 | mnt->mnt_root = dget(sdp->sd_master_dir); | |
1389 | else | |
1390 | mnt->mnt_root = dget(sdp->sd_root_dir); | |
1391 | return 0; | |
1392 | ||
1393 | error_super: | |
1394 | deactivate_locked_super(s); | |
1395 | error_bdev: | |
1396 | close_bdev_exclusive(bdev, mode); | |
1397 | return error; | |
1398 | } | |
1399 | ||
f6d03139 SW |
1400 | static int set_meta_super(struct super_block *s, void *ptr) |
1401 | { | |
1402 | return -EINVAL; | |
1403 | } | |
1404 | ||
003dec89 SW |
1405 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, |
1406 | const char *dev_name, void *data, struct vfsmount *mnt) | |
86384605 | 1407 | { |
f6d03139 | 1408 | struct super_block *s; |
003dec89 | 1409 | struct gfs2_sbd *sdp; |
e24977d4 | 1410 | struct path path; |
86384605 | 1411 | int error; |
907b9bce | 1412 | |
e24977d4 | 1413 | error = kern_path(dev_name, LOOKUP_FOLLOW, &path); |
86384605 | 1414 | if (error) { |
9b8df98f SW |
1415 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", |
1416 | dev_name, error); | |
003dec89 | 1417 | return error; |
86384605 | 1418 | } |
f55073ff | 1419 | s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, |
f6d03139 | 1420 | path.dentry->d_inode->i_sb->s_bdev); |
e24977d4 | 1421 | path_put(&path); |
f6d03139 | 1422 | if (IS_ERR(s)) { |
86384605 | 1423 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); |
f6d03139 | 1424 | return PTR_ERR(s); |
86384605 | 1425 | } |
f55073ff SW |
1426 | if ((flags ^ s->s_flags) & MS_RDONLY) { |
1427 | deactivate_locked_super(s); | |
1428 | return -EBUSY; | |
1429 | } | |
f6d03139 SW |
1430 | sdp = s->s_fs_info; |
1431 | mnt->mnt_sb = s; | |
9b8df98f SW |
1432 | mnt->mnt_root = dget(sdp->sd_master_dir); |
1433 | return 0; | |
b3b94faa DT |
1434 | } |
1435 | ||
419c93e0 | 1436 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1437 | { |
1438 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1439 | |
1440 | if (sdp == NULL) { | |
1441 | kill_block_super(sb); | |
1442 | return; | |
3af165ac | 1443 | } |
88a19ad0 SW |
1444 | |
1445 | gfs2_meta_syncfs(sdp); | |
1446 | dput(sdp->sd_root_dir); | |
1447 | dput(sdp->sd_master_dir); | |
1448 | sdp->sd_root_dir = NULL; | |
1449 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1450 | shrink_dcache_sb(sb); |
9b8df98f | 1451 | kill_block_super(sb); |
88a19ad0 SW |
1452 | gfs2_delete_debugfs_file(sdp); |
1453 | kfree(sdp); | |
86384605 AD |
1454 | } |
1455 | ||
b3b94faa DT |
1456 | struct file_system_type gfs2_fs_type = { |
1457 | .name = "gfs2", | |
1458 | .fs_flags = FS_REQUIRES_DEV, | |
1459 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
1460 | .kill_sb = gfs2_kill_sb, |
1461 | .owner = THIS_MODULE, | |
1462 | }; | |
1463 | ||
1464 | struct file_system_type gfs2meta_fs_type = { | |
1465 | .name = "gfs2meta", | |
1466 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 | 1467 | .get_sb = gfs2_get_sb_meta, |
b3b94faa DT |
1468 | .owner = THIS_MODULE, |
1469 | }; | |
1470 |