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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
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> | |
afeacc8c | 17 | #include <linux/export.h> |
86384605 AD |
18 | #include <linux/namei.h> |
19 | #include <linux/mount.h> | |
5c676f6d | 20 | #include <linux/gfs2_ondisk.h> |
cc632e7f | 21 | #include <linux/quotaops.h> |
56aa72d0 | 22 | #include <linux/lockdep.h> |
b3b94faa DT |
23 | |
24 | #include "gfs2.h" | |
5c676f6d | 25 | #include "incore.h" |
da6dd40d | 26 | #include "bmap.h" |
b3b94faa DT |
27 | #include "glock.h" |
28 | #include "glops.h" | |
29 | #include "inode.h" | |
b3b94faa DT |
30 | #include "recovery.h" |
31 | #include "rgrp.h" | |
32 | #include "super.h" | |
b3b94faa | 33 | #include "sys.h" |
5c676f6d | 34 | #include "util.h" |
bb3b0e3d | 35 | #include "log.h" |
9ac1b4d9 | 36 | #include "quota.h" |
b5289681 | 37 | #include "dir.h" |
63997775 | 38 | #include "trace_gfs2.h" |
b3b94faa DT |
39 | |
40 | #define DO 0 | |
41 | #define UNDO 1 | |
42 | ||
9b8df98f SW |
43 | /** |
44 | * gfs2_tune_init - Fill a gfs2_tune structure with default values | |
45 | * @gt: tune | |
46 | * | |
47 | */ | |
48 | ||
49 | static void gfs2_tune_init(struct gfs2_tune *gt) | |
50 | { | |
51 | spin_lock_init(>->gt_spin); | |
52 | ||
9b8df98f SW |
53 | gt->gt_quota_simul_sync = 64; |
54 | gt->gt_quota_warn_period = 10; | |
55 | gt->gt_quota_scale_num = 1; | |
56 | gt->gt_quota_scale_den = 1; | |
9b8df98f SW |
57 | gt->gt_new_files_jdata = 0; |
58 | gt->gt_max_readahead = 1 << 18; | |
9b8df98f | 59 | gt->gt_complain_secs = 10; |
9b8df98f SW |
60 | } |
61 | ||
b3b94faa DT |
62 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
63 | { | |
64 | struct gfs2_sbd *sdp; | |
b3b94faa | 65 | |
85d1da67 | 66 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
67 | if (!sdp) |
68 | return NULL; | |
69 | ||
5c676f6d | 70 | sb->s_fs_info = sdp; |
b3b94faa | 71 | sdp->sd_vfs = sb; |
a245769f SW |
72 | sdp->sd_lkstats = alloc_percpu(struct gfs2_pcpu_lkstats); |
73 | if (!sdp->sd_lkstats) { | |
74 | kfree(sdp); | |
75 | return NULL; | |
76 | } | |
77 | ||
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); | |
3942ae53 | 83 | init_completion(&sdp->sd_locking_init); |
b3b94faa | 84 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
85 | |
86 | spin_lock_init(&sdp->sd_rindex_spin); | |
7c9ca621 | 87 | sdp->sd_rindex_tree.rb_node = NULL; |
b3b94faa DT |
88 | |
89 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
90 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 91 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 92 | |
b3b94faa | 93 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
f55ab26a | 94 | mutex_init(&sdp->sd_quota_mutex); |
37b2c837 | 95 | init_waitqueue_head(&sdp->sd_quota_wait); |
813e0c46 SW |
96 | INIT_LIST_HEAD(&sdp->sd_trunc_list); |
97 | spin_lock_init(&sdp->sd_trunc_lock); | |
b3b94faa DT |
98 | |
99 | spin_lock_init(&sdp->sd_log_lock); | |
5e687eac | 100 | atomic_set(&sdp->sd_log_pinned, 0); |
b3b94faa DT |
101 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
102 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
b3b94faa | 103 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); |
d7b616e2 | 104 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
b3b94faa | 105 | |
5e687eac BM |
106 | init_waitqueue_head(&sdp->sd_log_waitq); |
107 | init_waitqueue_head(&sdp->sd_logd_waitq); | |
d6a079e8 | 108 | spin_lock_init(&sdp->sd_ail_lock); |
b3b94faa DT |
109 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
110 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
111 | ||
484adff8 | 112 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
113 | atomic_set(&sdp->sd_log_in_flight, 0); |
114 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
b3b94faa DT |
115 | |
116 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
117 | ||
b3b94faa DT |
118 | return sdp; |
119 | } | |
120 | ||
b3b94faa | 121 | |
9b8df98f SW |
122 | /** |
123 | * gfs2_check_sb - Check superblock | |
124 | * @sdp: the filesystem | |
125 | * @sb: The superblock | |
126 | * @silent: Don't print a message if the check fails | |
127 | * | |
128 | * Checks the version code of the FS is one that we understand how to | |
129 | * read and that the sizes of the various on-disk structures have not | |
130 | * changed. | |
131 | */ | |
132 | ||
32e471ef | 133 | static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f | 134 | { |
32e471ef SW |
135 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
136 | ||
9b8df98f SW |
137 | if (sb->sb_magic != GFS2_MAGIC || |
138 | sb->sb_type != GFS2_METATYPE_SB) { | |
139 | if (!silent) | |
140 | printk(KERN_WARNING "GFS2: not a GFS2 filesystem\n"); | |
141 | return -EINVAL; | |
142 | } | |
143 | ||
144 | /* If format numbers match exactly, we're done. */ | |
145 | ||
146 | if (sb->sb_fs_format == GFS2_FORMAT_FS && | |
147 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) | |
148 | return 0; | |
149 | ||
c80dbb58 | 150 | fs_warn(sdp, "Unknown on-disk format, unable to mount\n"); |
9b8df98f | 151 | |
c80dbb58 | 152 | return -EINVAL; |
9b8df98f SW |
153 | } |
154 | ||
155 | static void end_bio_io_page(struct bio *bio, int error) | |
156 | { | |
157 | struct page *page = bio->bi_private; | |
158 | ||
159 | if (!error) | |
160 | SetPageUptodate(page); | |
161 | else | |
162 | printk(KERN_WARNING "gfs2: error %d reading superblock\n", error); | |
163 | unlock_page(page); | |
164 | } | |
165 | ||
32e471ef | 166 | static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf) |
9b8df98f | 167 | { |
32e471ef SW |
168 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
169 | struct super_block *s = sdp->sd_vfs; | |
9b8df98f SW |
170 | const struct gfs2_sb *str = buf; |
171 | ||
172 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
173 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
174 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); | |
175 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); | |
176 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
177 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
178 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
179 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
180 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
181 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
182 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
183 | ||
184 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
185 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
32e471ef | 186 | memcpy(s->s_uuid, str->sb_uuid, 16); |
9b8df98f SW |
187 | } |
188 | ||
189 | /** | |
190 | * gfs2_read_super - Read the gfs2 super block from disk | |
191 | * @sdp: The GFS2 super block | |
192 | * @sector: The location of the super block | |
193 | * @error: The error code to return | |
194 | * | |
195 | * This uses the bio functions to read the super block from disk | |
196 | * because we want to be 100% sure that we never read cached data. | |
197 | * A super block is read twice only during each GFS2 mount and is | |
198 | * never written to by the filesystem. The first time its read no | |
199 | * locks are held, and the only details which are looked at are those | |
200 | * relating to the locking protocol. Once locking is up and working, | |
201 | * the sb is read again under the lock to establish the location of | |
202 | * the master directory (contains pointers to journals etc) and the | |
203 | * root directory. | |
204 | * | |
205 | * Returns: 0 on success or error | |
206 | */ | |
207 | ||
32e471ef | 208 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) |
9b8df98f SW |
209 | { |
210 | struct super_block *sb = sdp->sd_vfs; | |
211 | struct gfs2_sb *p; | |
212 | struct page *page; | |
213 | struct bio *bio; | |
214 | ||
215 | page = alloc_page(GFP_NOFS); | |
216 | if (unlikely(!page)) | |
217 | return -ENOBUFS; | |
218 | ||
219 | ClearPageUptodate(page); | |
220 | ClearPageDirty(page); | |
221 | lock_page(page); | |
222 | ||
223 | bio = bio_alloc(GFP_NOFS, 1); | |
9b8df98f SW |
224 | bio->bi_sector = sector * (sb->s_blocksize >> 9); |
225 | bio->bi_bdev = sb->s_bdev; | |
226 | bio_add_page(bio, page, PAGE_SIZE, 0); | |
227 | ||
228 | bio->bi_end_io = end_bio_io_page; | |
229 | bio->bi_private = page; | |
20ed0535 | 230 | submit_bio(READ_SYNC | REQ_META, bio); |
9b8df98f SW |
231 | wait_on_page_locked(page); |
232 | bio_put(bio); | |
233 | if (!PageUptodate(page)) { | |
234 | __free_page(page); | |
235 | return -EIO; | |
236 | } | |
237 | p = kmap(page); | |
32e471ef | 238 | gfs2_sb_in(sdp, p); |
9b8df98f SW |
239 | kunmap(page); |
240 | __free_page(page); | |
32e471ef | 241 | return gfs2_check_sb(sdp, silent); |
9b8df98f | 242 | } |
6bac243f | 243 | |
9b8df98f SW |
244 | /** |
245 | * gfs2_read_sb - Read super block | |
246 | * @sdp: The GFS2 superblock | |
9b8df98f SW |
247 | * @silent: Don't print message if mount fails |
248 | * | |
249 | */ | |
250 | ||
6bac243f | 251 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f SW |
252 | { |
253 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
254 | u32 tmp_blocks; | |
255 | unsigned int x; | |
256 | int error; | |
257 | ||
32e471ef | 258 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
9b8df98f SW |
259 | if (error) { |
260 | if (!silent) | |
261 | fs_err(sdp, "can't read superblock\n"); | |
262 | return error; | |
263 | } | |
264 | ||
9b8df98f SW |
265 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
266 | GFS2_BASIC_BLOCK_SHIFT; | |
267 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
268 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - | |
269 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
270 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
271 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
272 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); | |
273 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
274 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
275 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
276 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
277 | sizeof(struct gfs2_meta_header)) / | |
278 | sizeof(struct gfs2_quota_change); | |
a68a0a35 BP |
279 | sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize - |
280 | sizeof(struct gfs2_meta_header)) | |
281 | * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */ | |
9b8df98f SW |
282 | |
283 | /* Compute maximum reservation required to add a entry to a directory */ | |
284 | ||
285 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH), | |
286 | sdp->sd_jbsize); | |
287 | ||
288 | ind_blocks = 0; | |
289 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
290 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
291 | ind_blocks += tmp_blocks; | |
292 | } | |
293 | ||
294 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
295 | ||
296 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
297 | ||
298 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
299 | sizeof(struct gfs2_dinode); | |
300 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
301 | for (x = 2;; x++) { | |
302 | u64 space, d; | |
303 | u32 m; | |
304 | ||
305 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
306 | d = space; | |
307 | m = do_div(d, sdp->sd_inptrs); | |
308 | ||
309 | if (d != sdp->sd_heightsize[x - 1] || m) | |
310 | break; | |
311 | sdp->sd_heightsize[x] = space; | |
312 | } | |
313 | sdp->sd_max_height = x; | |
314 | sdp->sd_heightsize[x] = ~0; | |
315 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
316 | ||
317 | sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize - | |
318 | sizeof(struct gfs2_dinode); | |
319 | sdp->sd_jheightsize[1] = sdp->sd_jbsize * sdp->sd_diptrs; | |
320 | for (x = 2;; x++) { | |
321 | u64 space, d; | |
322 | u32 m; | |
323 | ||
324 | space = sdp->sd_jheightsize[x - 1] * sdp->sd_inptrs; | |
325 | d = space; | |
326 | m = do_div(d, sdp->sd_inptrs); | |
327 | ||
328 | if (d != sdp->sd_jheightsize[x - 1] || m) | |
329 | break; | |
330 | sdp->sd_jheightsize[x] = space; | |
331 | } | |
332 | sdp->sd_max_jheight = x; | |
333 | sdp->sd_jheightsize[x] = ~0; | |
334 | gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT); | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
b3b94faa DT |
339 | static int init_names(struct gfs2_sbd *sdp, int silent) |
340 | { | |
b3b94faa DT |
341 | char *proto, *table; |
342 | int error = 0; | |
343 | ||
344 | proto = sdp->sd_args.ar_lockproto; | |
345 | table = sdp->sd_args.ar_locktable; | |
346 | ||
347 | /* Try to autodetect */ | |
348 | ||
349 | if (!proto[0] || !table[0]) { | |
32e471ef | 350 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
bb8d8a6f SW |
351 | if (error) |
352 | return error; | |
3cf1e7be | 353 | |
b3b94faa | 354 | if (!proto[0]) |
3cf1e7be | 355 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 356 | if (!table[0]) |
3cf1e7be | 357 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
358 | } |
359 | ||
360 | if (!table[0]) | |
361 | table = sdp->sd_vfs->s_id; | |
362 | ||
00377d8e JD |
363 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
364 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); | |
b3b94faa | 365 | |
5d35e31f DC |
366 | table = sdp->sd_table_name; |
367 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
368 | *table = '_'; |
369 | ||
b3b94faa DT |
370 | return error; |
371 | } | |
372 | ||
373 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
374 | int undo) | |
375 | { | |
b3b94faa DT |
376 | int error = 0; |
377 | ||
378 | if (undo) | |
379 | goto fail_trans; | |
380 | ||
b3b94faa DT |
381 | error = gfs2_glock_nq_num(sdp, |
382 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
383 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
384 | mount_gh); | |
385 | if (error) { | |
386 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
387 | goto fail; | |
388 | } | |
389 | ||
390 | error = gfs2_glock_nq_num(sdp, | |
391 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
392 | LM_ST_SHARED, | |
579b78a4 | 393 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
394 | &sdp->sd_live_gh); |
395 | if (error) { | |
396 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
397 | goto fail_mount; | |
398 | } | |
399 | ||
400 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
401 | CREATE, &sdp->sd_rename_gl); | |
402 | if (error) { | |
403 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
404 | goto fail_live; | |
405 | } | |
406 | ||
407 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
408 | CREATE, &sdp->sd_trans_gl); | |
409 | if (error) { | |
410 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
411 | goto fail_rename; | |
412 | } | |
b3b94faa DT |
413 | |
414 | return 0; | |
415 | ||
feaa7bba | 416 | fail_trans: |
b3b94faa | 417 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 418 | fail_rename: |
b3b94faa | 419 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 420 | fail_live: |
b3b94faa | 421 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 422 | fail_mount: |
b3b94faa | 423 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 424 | fail: |
b3b94faa DT |
425 | return error; |
426 | } | |
427 | ||
9b8df98f SW |
428 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
429 | u64 no_addr, const char *name) | |
f42faf4f | 430 | { |
9b8df98f SW |
431 | struct gfs2_sbd *sdp = sb->s_fs_info; |
432 | struct dentry *dentry; | |
433 | struct inode *inode; | |
434 | ||
44ad37d6 | 435 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); |
9b8df98f SW |
436 | if (IS_ERR(inode)) { |
437 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
438 | return PTR_ERR(inode); | |
439 | } | |
48fde701 | 440 | dentry = d_make_root(inode); |
9b8df98f SW |
441 | if (!dentry) { |
442 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
9b8df98f SW |
443 | return -ENOMEM; |
444 | } | |
9b8df98f SW |
445 | *dptr = dentry; |
446 | return 0; | |
f42faf4f SW |
447 | } |
448 | ||
9b8df98f | 449 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
450 | { |
451 | struct super_block *sb = sdp->sd_vfs; | |
452 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 453 | u64 no_addr; |
9b8df98f | 454 | int ret; |
b3b94faa | 455 | |
9b8df98f SW |
456 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
457 | LM_ST_SHARED, 0, &sb_gh); | |
458 | if (ret) { | |
459 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
460 | return ret; | |
b3b94faa | 461 | } |
907b9bce | 462 | |
6bac243f | 463 | ret = gfs2_read_sb(sdp, silent); |
9b8df98f SW |
464 | if (ret) { |
465 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
466 | goto out; |
467 | } | |
468 | ||
469 | /* Set up the buffer cache and SB for real */ | |
e1defc4f | 470 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
9b8df98f | 471 | ret = -EINVAL; |
b3b94faa DT |
472 | fs_err(sdp, "FS block size (%u) is too small for device " |
473 | "block size (%u)\n", | |
e1defc4f | 474 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
b3b94faa DT |
475 | goto out; |
476 | } | |
477 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 478 | ret = -EINVAL; |
b3b94faa DT |
479 | fs_err(sdp, "FS block size (%u) is too big for machine " |
480 | "page size (%u)\n", | |
481 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
482 | goto out; | |
483 | } | |
b3b94faa DT |
484 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
485 | ||
f42faf4f | 486 | /* Get the root inode */ |
dbb7cae2 | 487 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
488 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
489 | if (ret) | |
f42faf4f | 490 | goto out; |
b3b94faa | 491 | |
9b8df98f SW |
492 | /* Get the master inode */ |
493 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
494 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
495 | if (ret) { | |
496 | dput(sdp->sd_root_dir); | |
497 | goto out; | |
498 | } | |
499 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 500 | out: |
b3b94faa | 501 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 502 | return ret; |
b3b94faa DT |
503 | } |
504 | ||
da6dd40d BP |
505 | /** |
506 | * map_journal_extents - create a reusable "extent" mapping from all logical | |
507 | * blocks to all physical blocks for the given journal. This will save | |
508 | * us time when writing journal blocks. Most journals will have only one | |
509 | * extent that maps all their logical blocks. That's because gfs2.mkfs | |
510 | * arranges the journal blocks sequentially to maximize performance. | |
511 | * So the extent would map the first block for the entire file length. | |
512 | * However, gfs2_jadd can happen while file activity is happening, so | |
513 | * those journals may not be sequential. Less likely is the case where | |
514 | * the users created their own journals by mounting the metafs and | |
515 | * laying it out. But it's still possible. These journals might have | |
516 | * several extents. | |
517 | * | |
518 | * TODO: This should be done in bigger chunks rather than one block at a time, | |
519 | * but since it's only done at mount time, I'm not worried about the | |
520 | * time it takes. | |
521 | */ | |
522 | static int map_journal_extents(struct gfs2_sbd *sdp) | |
523 | { | |
524 | struct gfs2_jdesc *jd = sdp->sd_jdesc; | |
525 | unsigned int lb; | |
526 | u64 db, prev_db; /* logical block, disk block, prev disk block */ | |
527 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); | |
528 | struct gfs2_journal_extent *jext = NULL; | |
529 | struct buffer_head bh; | |
530 | int rc = 0; | |
531 | ||
da6dd40d BP |
532 | prev_db = 0; |
533 | ||
a2e0f799 | 534 | for (lb = 0; lb < i_size_read(jd->jd_inode) >> sdp->sd_sb.sb_bsize_shift; lb++) { |
da6dd40d BP |
535 | bh.b_state = 0; |
536 | bh.b_blocknr = 0; | |
537 | bh.b_size = 1 << ip->i_inode.i_blkbits; | |
538 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); | |
539 | db = bh.b_blocknr; | |
540 | if (rc || !db) { | |
541 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" | |
542 | "%u db=%llu\n", rc, lb, (unsigned long long)db); | |
543 | break; | |
544 | } | |
545 | if (!prev_db || db != prev_db + 1) { | |
546 | jext = kzalloc(sizeof(struct gfs2_journal_extent), | |
547 | GFP_KERNEL); | |
548 | if (!jext) { | |
549 | printk(KERN_INFO "GFS2 error: out of memory " | |
550 | "mapping journal extents.\n"); | |
551 | rc = -ENOMEM; | |
552 | break; | |
553 | } | |
554 | jext->dblock = db; | |
555 | jext->lblock = lb; | |
556 | jext->blocks = 1; | |
557 | list_add_tail(&jext->extent_list, &jd->extent_list); | |
558 | } else { | |
559 | jext->blocks++; | |
560 | } | |
561 | prev_db = db; | |
562 | } | |
563 | return rc; | |
564 | } | |
565 | ||
f057f6cd | 566 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
da755fdb | 567 | { |
f057f6cd SW |
568 | char *message = "FIRSTMOUNT=Done"; |
569 | char *envp[] = { message, NULL }; | |
e0c2a9aa DT |
570 | |
571 | fs_info(sdp, "first mount done, others may mount\n"); | |
572 | ||
573 | if (sdp->sd_lockstruct.ls_ops->lm_first_done) | |
574 | sdp->sd_lockstruct.ls_ops->lm_first_done(sdp); | |
575 | ||
f057f6cd | 576 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
da755fdb SW |
577 | } |
578 | ||
b5289681 SW |
579 | /** |
580 | * gfs2_jindex_hold - Grab a lock on the jindex | |
581 | * @sdp: The GFS2 superblock | |
582 | * @ji_gh: the holder for the jindex glock | |
583 | * | |
584 | * Returns: errno | |
585 | */ | |
586 | ||
587 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) | |
588 | { | |
589 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); | |
590 | struct qstr name; | |
591 | char buf[20]; | |
592 | struct gfs2_jdesc *jd; | |
593 | int error; | |
594 | ||
595 | name.name = buf; | |
596 | ||
597 | mutex_lock(&sdp->sd_jindex_mutex); | |
598 | ||
599 | for (;;) { | |
600 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); | |
601 | if (error) | |
602 | break; | |
603 | ||
604 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
605 | name.hash = gfs2_disk_hash(name.name, name.len); | |
606 | ||
607 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
608 | if (error == -ENOENT) { | |
609 | error = 0; | |
610 | break; | |
611 | } | |
612 | ||
613 | gfs2_glock_dq_uninit(ji_gh); | |
614 | ||
615 | if (error) | |
616 | break; | |
617 | ||
618 | error = -ENOMEM; | |
619 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
620 | if (!jd) | |
621 | break; | |
622 | ||
623 | INIT_LIST_HEAD(&jd->extent_list); | |
6ecd7c2d | 624 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 SW |
625 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
626 | if (!jd->jd_inode || IS_ERR(jd->jd_inode)) { | |
627 | if (!jd->jd_inode) | |
628 | error = -ENOENT; | |
629 | else | |
630 | error = PTR_ERR(jd->jd_inode); | |
631 | kfree(jd); | |
632 | break; | |
633 | } | |
634 | ||
635 | spin_lock(&sdp->sd_jindex_spin); | |
636 | jd->jd_jid = sdp->sd_journals++; | |
637 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); | |
638 | spin_unlock(&sdp->sd_jindex_spin); | |
639 | } | |
640 | ||
641 | mutex_unlock(&sdp->sd_jindex_mutex); | |
642 | ||
643 | return error; | |
644 | } | |
645 | ||
b3b94faa DT |
646 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
647 | { | |
9b8df98f | 648 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa | 649 | struct gfs2_holder ji_gh; |
5c676f6d | 650 | struct gfs2_inode *ip; |
b3b94faa DT |
651 | int jindex = 1; |
652 | int error = 0; | |
653 | ||
654 | if (undo) { | |
655 | jindex = 0; | |
fe64d517 | 656 | goto fail_jinode_gh; |
b3b94faa DT |
657 | } |
658 | ||
9b8df98f | 659 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 660 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 661 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 662 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 663 | } |
b3b94faa DT |
664 | |
665 | /* Load in the journal index special file */ | |
666 | ||
667 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
668 | if (error) { | |
669 | fs_err(sdp, "can't read journal index: %d\n", error); | |
670 | goto fail; | |
671 | } | |
672 | ||
0e5a9fb0 | 673 | error = -EUSERS; |
b3b94faa DT |
674 | if (!gfs2_jindex_size(sdp)) { |
675 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 676 | goto fail_jindex; |
b3b94faa DT |
677 | } |
678 | ||
679 | if (sdp->sd_args.ar_spectator) { | |
680 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 681 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
682 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
683 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
684 | } else { |
685 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
686 | fs_err(sdp, "can't mount journal #%u\n", | |
687 | sdp->sd_lockstruct.ls_jid); | |
688 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
689 | gfs2_jindex_size(sdp), | |
690 | gfs2_jindex_size(sdp) - 1); | |
691 | goto fail_jindex; | |
692 | } | |
693 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
694 | ||
feaa7bba | 695 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
696 | &gfs2_journal_glops, |
697 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
698 | &sdp->sd_journal_gh); | |
699 | if (error) { | |
700 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
701 | goto fail_jindex; | |
702 | } | |
703 | ||
feaa7bba SW |
704 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
705 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 706 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
707 | &sdp->sd_jinode_gh); |
708 | if (error) { | |
709 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
710 | error); | |
711 | goto fail_journal_gh; | |
712 | } | |
713 | ||
714 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
715 | if (error) { | |
716 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
717 | sdp->sd_jdesc->jd_jid, error); | |
718 | goto fail_jinode_gh; | |
719 | } | |
fd041f0b | 720 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
721 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
722 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
723 | |
724 | /* Map the extents for this journal's blocks */ | |
725 | map_journal_extents(sdp); | |
b3b94faa | 726 | } |
63997775 | 727 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa DT |
728 | |
729 | if (sdp->sd_lockstruct.ls_first) { | |
730 | unsigned int x; | |
731 | for (x = 0; x < sdp->sd_journals; x++) { | |
6ecd7c2d TH |
732 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), |
733 | true); | |
b3b94faa DT |
734 | if (error) { |
735 | fs_err(sdp, "error recovering journal %u: %d\n", | |
736 | x, error); | |
737 | goto fail_jinode_gh; | |
738 | } | |
739 | } | |
740 | ||
f057f6cd | 741 | gfs2_others_may_mount(sdp); |
b3b94faa | 742 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 743 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
744 | if (error) { |
745 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
746 | goto fail_jinode_gh; | |
747 | } | |
748 | } | |
749 | ||
750 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
751 | gfs2_glock_dq_uninit(&ji_gh); | |
752 | jindex = 0; | |
753 | ||
b3b94faa DT |
754 | return 0; |
755 | ||
a91ea69f | 756 | fail_jinode_gh: |
b3b94faa DT |
757 | if (!sdp->sd_args.ar_spectator) |
758 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 759 | fail_journal_gh: |
b3b94faa DT |
760 | if (!sdp->sd_args.ar_spectator) |
761 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 762 | fail_jindex: |
b3b94faa DT |
763 | gfs2_jindex_free(sdp); |
764 | if (jindex) | |
765 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 766 | fail: |
f42faf4f | 767 | iput(sdp->sd_jindex); |
b3b94faa DT |
768 | return error; |
769 | } | |
770 | ||
56aa72d0 | 771 | static struct lock_class_key gfs2_quota_imutex_key; |
b3b94faa DT |
772 | |
773 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
774 | { | |
b3b94faa | 775 | int error = 0; |
9b8df98f | 776 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
777 | |
778 | if (undo) | |
f42faf4f SW |
779 | goto fail_qinode; |
780 | ||
f42faf4f SW |
781 | error = init_journal(sdp, undo); |
782 | if (error) | |
9b8df98f | 783 | goto fail; |
b3b94faa | 784 | |
b3b94faa | 785 | /* Read in the master statfs inode */ |
9b8df98f | 786 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
c752666c SW |
787 | if (IS_ERR(sdp->sd_statfs_inode)) { |
788 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 789 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
8d8291ae | 790 | goto fail_journal; |
b3b94faa DT |
791 | } |
792 | ||
793 | /* Read in the resource index inode */ | |
9b8df98f | 794 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
795 | if (IS_ERR(sdp->sd_rindex)) { |
796 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
797 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
798 | goto fail_statfs; | |
799 | } | |
cf45b752 | 800 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
801 | |
802 | /* Read in the quota inode */ | |
9b8df98f | 803 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
804 | if (IS_ERR(sdp->sd_quota_inode)) { |
805 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
806 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
807 | goto fail_rindex; | |
808 | } | |
56aa72d0 JK |
809 | /* |
810 | * i_mutex on quota files is special. Since this inode is hidden system | |
811 | * file, we are safe to define locking ourselves. | |
812 | */ | |
813 | lockdep_set_class(&sdp->sd_quota_inode->i_mutex, | |
814 | &gfs2_quota_imutex_key); | |
a365fbf3 SW |
815 | |
816 | error = gfs2_rindex_update(sdp); | |
817 | if (error) | |
818 | goto fail_qinode; | |
819 | ||
b3b94faa DT |
820 | return 0; |
821 | ||
f42faf4f SW |
822 | fail_qinode: |
823 | iput(sdp->sd_quota_inode); | |
f42faf4f | 824 | fail_rindex: |
b3b94faa | 825 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 826 | iput(sdp->sd_rindex); |
f42faf4f SW |
827 | fail_statfs: |
828 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
829 | fail_journal: |
830 | init_journal(sdp, UNDO); | |
f42faf4f | 831 | fail: |
b3b94faa DT |
832 | return error; |
833 | } | |
834 | ||
835 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
836 | { | |
f42faf4f | 837 | struct inode *pn = NULL; |
b3b94faa DT |
838 | char buf[30]; |
839 | int error = 0; | |
5c676f6d | 840 | struct gfs2_inode *ip; |
9b8df98f | 841 | struct inode *master = sdp->sd_master_dir->d_inode; |
b3b94faa DT |
842 | |
843 | if (sdp->sd_args.ar_spectator) | |
844 | return 0; | |
845 | ||
846 | if (undo) | |
847 | goto fail_qc_gh; | |
848 | ||
9b8df98f | 849 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
850 | if (IS_ERR(pn)) { |
851 | error = PTR_ERR(pn); | |
b3b94faa DT |
852 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
853 | return error; | |
854 | } | |
855 | ||
b3b94faa | 856 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
857 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
858 | if (IS_ERR(sdp->sd_sc_inode)) { | |
859 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa | 860 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
8d8291ae | 861 | goto fail; |
b3b94faa DT |
862 | } |
863 | ||
b3b94faa | 864 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
865 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
866 | if (IS_ERR(sdp->sd_qc_inode)) { | |
867 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
868 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
869 | goto fail_ut_i; | |
870 | } | |
871 | ||
f42faf4f | 872 | iput(pn); |
b3b94faa DT |
873 | pn = NULL; |
874 | ||
feaa7bba | 875 | ip = GFS2_I(sdp->sd_sc_inode); |
8d8291ae | 876 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
877 | &sdp->sd_sc_gh); |
878 | if (error) { | |
879 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
8d8291ae | 880 | goto fail_qc_i; |
b3b94faa DT |
881 | } |
882 | ||
feaa7bba | 883 | ip = GFS2_I(sdp->sd_qc_inode); |
8d8291ae | 884 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
885 | &sdp->sd_qc_gh); |
886 | if (error) { | |
887 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
888 | goto fail_ut_gh; | |
889 | } | |
890 | ||
891 | return 0; | |
892 | ||
a91ea69f | 893 | fail_qc_gh: |
b3b94faa | 894 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 895 | fail_ut_gh: |
b3b94faa | 896 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 897 | fail_qc_i: |
f42faf4f | 898 | iput(sdp->sd_qc_inode); |
a91ea69f | 899 | fail_ut_i: |
f42faf4f | 900 | iput(sdp->sd_sc_inode); |
a91ea69f | 901 | fail: |
b3b94faa | 902 | if (pn) |
f42faf4f | 903 | iput(pn); |
b3b94faa DT |
904 | return error; |
905 | } | |
906 | ||
907 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
908 | { | |
909 | struct task_struct *p; | |
910 | int error = 0; | |
911 | ||
912 | if (undo) | |
feaa7bba | 913 | goto fail_quotad; |
b3b94faa | 914 | |
b3b94faa DT |
915 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); |
916 | error = IS_ERR(p); | |
917 | if (error) { | |
918 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
919 | return error; | |
920 | } | |
921 | sdp->sd_logd_process = p; | |
922 | ||
b3b94faa DT |
923 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); |
924 | error = IS_ERR(p); | |
925 | if (error) { | |
926 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
927 | goto fail; | |
928 | } | |
929 | sdp->sd_quotad_process = p; | |
930 | ||
b3b94faa DT |
931 | return 0; |
932 | ||
b3b94faa | 933 | |
feaa7bba | 934 | fail_quotad: |
b3b94faa | 935 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 936 | fail: |
b3b94faa | 937 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
938 | return error; |
939 | } | |
da755fdb | 940 | |
f057f6cd SW |
941 | static const match_table_t nolock_tokens = { |
942 | { Opt_jid, "jid=%d\n", }, | |
943 | { Opt_err, NULL }, | |
944 | }; | |
945 | ||
946 | static const struct lm_lockops nolock_ops = { | |
947 | .lm_proto_name = "lock_nolock", | |
fc0e38da | 948 | .lm_put_lock = gfs2_glock_free, |
f057f6cd SW |
949 | .lm_tokens = &nolock_tokens, |
950 | }; | |
951 | ||
da755fdb SW |
952 | /** |
953 | * gfs2_lm_mount - mount a locking protocol | |
954 | * @sdp: the filesystem | |
3ad2f3fb | 955 | * @args: mount arguments |
da755fdb SW |
956 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
957 | * | |
958 | * Returns: errno | |
959 | */ | |
960 | ||
961 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
962 | { | |
f057f6cd SW |
963 | const struct lm_lockops *lm; |
964 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
965 | struct gfs2_args *args = &sdp->sd_args; | |
966 | const char *proto = sdp->sd_proto_name; | |
967 | const char *table = sdp->sd_table_name; | |
f057f6cd SW |
968 | char *o, *options; |
969 | int ret; | |
da755fdb | 970 | |
f057f6cd SW |
971 | if (!strcmp("lock_nolock", proto)) { |
972 | lm = &nolock_ops; | |
973 | sdp->sd_args.ar_localflocks = 1; | |
f057f6cd SW |
974 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
975 | } else if (!strcmp("lock_dlm", proto)) { | |
976 | lm = &gfs2_dlm_ops; | |
977 | #endif | |
978 | } else { | |
979 | printk(KERN_INFO "GFS2: can't find protocol %s\n", proto); | |
980 | return -ENOENT; | |
981 | } | |
da755fdb SW |
982 | |
983 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
984 | ||
f057f6cd SW |
985 | ls->ls_ops = lm; |
986 | ls->ls_first = 1; | |
da755fdb | 987 | |
f057f6cd SW |
988 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
989 | substring_t tmp[MAX_OPT_ARGS]; | |
990 | int token, option; | |
991 | ||
992 | if (!o || !*o) | |
993 | continue; | |
994 | ||
995 | token = match_token(o, *lm->lm_tokens, tmp); | |
996 | switch (token) { | |
997 | case Opt_jid: | |
998 | ret = match_int(&tmp[0], &option); | |
999 | if (ret || option < 0) | |
1000 | goto hostdata_error; | |
ba6e9364 SW |
1001 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
1002 | ls->ls_jid = option; | |
f057f6cd SW |
1003 | break; |
1004 | case Opt_id: | |
4875647a | 1005 | case Opt_nodir: |
2b88f7c5 | 1006 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
1007 | break; |
1008 | case Opt_first: | |
1009 | ret = match_int(&tmp[0], &option); | |
1010 | if (ret || (option != 0 && option != 1)) | |
1011 | goto hostdata_error; | |
1012 | ls->ls_first = option; | |
1013 | break; | |
f057f6cd SW |
1014 | case Opt_err: |
1015 | default: | |
1016 | hostdata_error: | |
1017 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
1018 | return -EINVAL; | |
1019 | } | |
da755fdb SW |
1020 | } |
1021 | ||
f057f6cd SW |
1022 | if (lm->lm_mount == NULL) { |
1023 | fs_info(sdp, "Now mounting FS...\n"); | |
19237039 | 1024 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1025 | return 0; |
da755fdb | 1026 | } |
e0c2a9aa | 1027 | ret = lm->lm_mount(sdp, table); |
f057f6cd SW |
1028 | if (ret == 0) |
1029 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); | |
19237039 | 1030 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1031 | return ret; |
da755fdb SW |
1032 | } |
1033 | ||
1034 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1035 | { | |
f057f6cd SW |
1036 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
1037 | if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) && | |
1038 | lm->lm_unmount) | |
1039 | lm->lm_unmount(sdp); | |
da755fdb | 1040 | } |
b3b94faa | 1041 | |
ba6e9364 SW |
1042 | static int gfs2_journalid_wait(void *word) |
1043 | { | |
1044 | if (signal_pending(current)) | |
1045 | return -EINTR; | |
1046 | schedule(); | |
1047 | return 0; | |
1048 | } | |
1049 | ||
1050 | static int wait_on_journal(struct gfs2_sbd *sdp) | |
1051 | { | |
ba6e9364 SW |
1052 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
1053 | return 0; | |
1054 | ||
1055 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, gfs2_journalid_wait, TASK_INTERRUPTIBLE); | |
1056 | } | |
1057 | ||
8633ecfa SW |
1058 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
1059 | { | |
1060 | struct super_block *sb = sdp->sd_vfs; | |
1061 | char ro[20]; | |
1062 | char spectator[20]; | |
1063 | char *envp[] = { ro, spectator, NULL }; | |
1064 | sprintf(ro, "RDONLY=%d", (sb->s_flags & MS_RDONLY) ? 1 : 0); | |
1065 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); | |
1066 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
1067 | } | |
1068 | ||
b3b94faa DT |
1069 | /** |
1070 | * fill_super - Read in superblock | |
1071 | * @sb: The VFS superblock | |
1072 | * @data: Mount options | |
1073 | * @silent: Don't complain if it's not a GFS2 filesystem | |
1074 | * | |
1075 | * Returns: errno | |
1076 | */ | |
1077 | ||
f55073ff | 1078 | static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent) |
b3b94faa DT |
1079 | { |
1080 | struct gfs2_sbd *sdp; | |
1081 | struct gfs2_holder mount_gh; | |
1082 | int error; | |
1083 | ||
1084 | sdp = init_sbd(sb); | |
1085 | if (!sdp) { | |
d92a8d48 | 1086 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1087 | return -ENOMEM; |
1088 | } | |
f55073ff | 1089 | sdp->sd_args = *args; |
b3b94faa | 1090 | |
fe64d517 | 1091 | if (sdp->sd_args.ar_spectator) { |
6f04c1c7 | 1092 | sb->s_flags |= MS_RDONLY; |
e8ca5cc5 | 1093 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
fe64d517 | 1094 | } |
6f04c1c7 SW |
1095 | if (sdp->sd_args.ar_posix_acl) |
1096 | sb->s_flags |= MS_POSIXACL; | |
f25934c5 CH |
1097 | if (sdp->sd_args.ar_nobarrier) |
1098 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1099 | |
9964afbb | 1100 | sb->s_flags |= MS_NOSEC; |
719ee344 SW |
1101 | sb->s_magic = GFS2_MAGIC; |
1102 | sb->s_op = &gfs2_super_ops; | |
41ced6dc | 1103 | sb->s_d_op = &gfs2_dops; |
719ee344 | 1104 | sb->s_export_op = &gfs2_export_ops; |
40b78a32 | 1105 | sb->s_xattr = gfs2_xattr_handlers; |
cc632e7f SW |
1106 | sb->s_qcop = &gfs2_quotactl_ops; |
1107 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; | |
719ee344 SW |
1108 | sb->s_time_gran = 1; |
1109 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1110 | |
1111 | /* Set up the buffer cache and fill in some fake block size values | |
1112 | to allow us to read-in the on-disk superblock. */ | |
1113 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1114 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1115 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1116 | GFS2_BASIC_BLOCK_SHIFT; | |
1117 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa | 1118 | |
5e687eac | 1119 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1120 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1121 | if (sdp->sd_args.ar_statfs_quantum) { | |
1122 | sdp->sd_tune.gt_statfs_slow = 0; | |
1123 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
32e471ef | 1124 | } else { |
3d3c10f2 BM |
1125 | sdp->sd_tune.gt_statfs_slow = 1; |
1126 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1127 | } | |
48c2b613 | 1128 | |
b3b94faa | 1129 | error = init_names(sdp, silent); |
0d515210 BP |
1130 | if (error) { |
1131 | /* In this case, we haven't initialized sysfs, so we have to | |
1132 | manually free the sdp. */ | |
1133 | free_percpu(sdp->sd_lkstats); | |
1134 | kfree(sdp); | |
1135 | sb->s_fs_info = NULL; | |
1136 | return error; | |
1137 | } | |
b3b94faa | 1138 | |
e0c2a9aa DT |
1139 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s", sdp->sd_table_name); |
1140 | ||
b3b94faa | 1141 | error = gfs2_sys_fs_add(sdp); |
0d515210 BP |
1142 | /* |
1143 | * If we hit an error here, gfs2_sys_fs_add will have called function | |
1144 | * kobject_put which causes the sysfs usage count to go to zero, which | |
1145 | * causes sysfs to call function gfs2_sbd_release, which frees sdp. | |
1146 | * Subsequent error paths here will call gfs2_sys_fs_del, which also | |
1147 | * kobject_put to free sdp. | |
1148 | */ | |
b3b94faa | 1149 | if (error) |
0d515210 BP |
1150 | return error; |
1151 | ||
1152 | gfs2_create_debugfs_file(sdp); | |
b3b94faa DT |
1153 | |
1154 | error = gfs2_lm_mount(sdp, silent); | |
1155 | if (error) | |
0d515210 | 1156 | goto fail_debug; |
b3b94faa DT |
1157 | |
1158 | error = init_locking(sdp, &mount_gh, DO); | |
1159 | if (error) | |
1160 | goto fail_lm; | |
1161 | ||
9b8df98f | 1162 | error = init_sb(sdp, silent); |
b3b94faa DT |
1163 | if (error) |
1164 | goto fail_locking; | |
b3b94faa | 1165 | |
ba6e9364 SW |
1166 | error = wait_on_journal(sdp); |
1167 | if (error) | |
1168 | goto fail_sb; | |
1169 | ||
feb47ca9 SW |
1170 | /* |
1171 | * If user space has failed to join the cluster or some similar | |
1172 | * failure has occurred, then the journal id will contain a | |
1173 | * negative (error) number. This will then be returned to the | |
1174 | * caller (of the mount syscall). We do this even for spectator | |
1175 | * mounts (which just write a jid of 0 to indicate "ok" even though | |
1176 | * the jid is unused in the spectator case) | |
1177 | */ | |
1178 | if (sdp->sd_lockstruct.ls_jid < 0) { | |
1179 | error = sdp->sd_lockstruct.ls_jid; | |
1180 | sdp->sd_lockstruct.ls_jid = 0; | |
1181 | goto fail_sb; | |
1182 | } | |
1183 | ||
e0c2a9aa DT |
1184 | if (sdp->sd_args.ar_spectator) |
1185 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", | |
1186 | sdp->sd_table_name); | |
1187 | else | |
1188 | snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", | |
1189 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); | |
1190 | ||
b3b94faa DT |
1191 | error = init_inodes(sdp, DO); |
1192 | if (error) | |
f42faf4f | 1193 | goto fail_sb; |
b3b94faa DT |
1194 | |
1195 | error = init_per_node(sdp, DO); | |
1196 | if (error) | |
1197 | goto fail_inodes; | |
1198 | ||
1199 | error = gfs2_statfs_init(sdp); | |
1200 | if (error) { | |
1201 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1202 | goto fail_per_node; | |
1203 | } | |
1204 | ||
1205 | error = init_threads(sdp, DO); | |
1206 | if (error) | |
1207 | goto fail_per_node; | |
1208 | ||
1209 | if (!(sb->s_flags & MS_RDONLY)) { | |
1210 | error = gfs2_make_fs_rw(sdp); | |
1211 | if (error) { | |
1212 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
1213 | goto fail_threads; | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | gfs2_glock_dq_uninit(&mount_gh); | |
8633ecfa | 1218 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1219 | return 0; |
1220 | ||
a91ea69f | 1221 | fail_threads: |
b3b94faa | 1222 | init_threads(sdp, UNDO); |
a91ea69f | 1223 | fail_per_node: |
b3b94faa | 1224 | init_per_node(sdp, UNDO); |
a91ea69f | 1225 | fail_inodes: |
b3b94faa | 1226 | init_inodes(sdp, UNDO); |
a91ea69f | 1227 | fail_sb: |
9b8df98f SW |
1228 | if (sdp->sd_root_dir) |
1229 | dput(sdp->sd_root_dir); | |
1230 | if (sdp->sd_master_dir) | |
1231 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1232 | if (sb->s_root) |
1233 | dput(sb->s_root); | |
9b8df98f | 1234 | sb->s_root = NULL; |
a91ea69f | 1235 | fail_locking: |
b3b94faa | 1236 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1237 | fail_lm: |
fefc03bf | 1238 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1239 | gfs2_lm_unmount(sdp); |
0d515210 | 1240 | fail_debug: |
5f882096 | 1241 | gfs2_delete_debugfs_file(sdp); |
a245769f | 1242 | free_percpu(sdp->sd_lkstats); |
0d515210 BP |
1243 | /* gfs2_sys_fs_del must be the last thing we do, since it causes |
1244 | * sysfs to call function gfs2_sbd_release, which frees sdp. */ | |
1245 | gfs2_sys_fs_del(sdp); | |
5c676f6d | 1246 | sb->s_fs_info = NULL; |
b3b94faa DT |
1247 | return error; |
1248 | } | |
1249 | ||
f55073ff | 1250 | static int set_gfs2_super(struct super_block *s, void *data) |
b3b94faa | 1251 | { |
f55073ff SW |
1252 | s->s_bdev = data; |
1253 | s->s_dev = s->s_bdev->bd_dev; | |
1254 | ||
1255 | /* | |
1256 | * We set the bdi here to the queue backing, file systems can | |
1257 | * overwrite this in ->fill_super() | |
1258 | */ | |
1259 | s->s_bdi = &bdev_get_queue(s->s_bdev)->backing_dev_info; | |
1260 | return 0; | |
86384605 AD |
1261 | } |
1262 | ||
f55073ff | 1263 | static int test_gfs2_super(struct super_block *s, void *ptr) |
f6d03139 SW |
1264 | { |
1265 | struct block_device *bdev = ptr; | |
1266 | return (bdev == s->s_bdev); | |
1267 | } | |
1268 | ||
f55073ff | 1269 | /** |
8bcbbf00 | 1270 | * gfs2_mount - Get the GFS2 superblock |
f55073ff SW |
1271 | * @fs_type: The GFS2 filesystem type |
1272 | * @flags: Mount flags | |
1273 | * @dev_name: The name of the device | |
1274 | * @data: The mount arguments | |
f55073ff SW |
1275 | * |
1276 | * Q. Why not use get_sb_bdev() ? | |
1277 | * A. We need to select one of two root directories to mount, independent | |
1278 | * of whether this is the initial, or subsequent, mount of this sb | |
1279 | * | |
1280 | * Returns: 0 or -ve on error | |
1281 | */ | |
1282 | ||
8bcbbf00 AV |
1283 | static struct dentry *gfs2_mount(struct file_system_type *fs_type, int flags, |
1284 | const char *dev_name, void *data) | |
f55073ff SW |
1285 | { |
1286 | struct block_device *bdev; | |
1287 | struct super_block *s; | |
d4d77629 | 1288 | fmode_t mode = FMODE_READ | FMODE_EXCL; |
f55073ff SW |
1289 | int error; |
1290 | struct gfs2_args args; | |
1291 | struct gfs2_sbd *sdp; | |
1292 | ||
1293 | if (!(flags & MS_RDONLY)) | |
1294 | mode |= FMODE_WRITE; | |
1295 | ||
d4d77629 | 1296 | bdev = blkdev_get_by_path(dev_name, mode, fs_type); |
f55073ff | 1297 | if (IS_ERR(bdev)) |
8bcbbf00 | 1298 | return ERR_CAST(bdev); |
f55073ff SW |
1299 | |
1300 | /* | |
1301 | * once the super is inserted into the list by sget, s_umount | |
1302 | * will protect the lockfs code from trying to start a snapshot | |
1303 | * while we are mounting | |
1304 | */ | |
1305 | mutex_lock(&bdev->bd_fsfreeze_mutex); | |
1306 | if (bdev->bd_fsfreeze_count > 0) { | |
1307 | mutex_unlock(&bdev->bd_fsfreeze_mutex); | |
1308 | error = -EBUSY; | |
1309 | goto error_bdev; | |
1310 | } | |
9249e17f | 1311 | s = sget(fs_type, test_gfs2_super, set_gfs2_super, flags, bdev); |
f55073ff SW |
1312 | mutex_unlock(&bdev->bd_fsfreeze_mutex); |
1313 | error = PTR_ERR(s); | |
1314 | if (IS_ERR(s)) | |
1315 | goto error_bdev; | |
1316 | ||
8bcbbf00 | 1317 | if (s->s_root) |
d4d77629 | 1318 | blkdev_put(bdev, mode); |
8bcbbf00 | 1319 | |
f55073ff SW |
1320 | memset(&args, 0, sizeof(args)); |
1321 | args.ar_quota = GFS2_QUOTA_DEFAULT; | |
1322 | args.ar_data = GFS2_DATA_DEFAULT; | |
5e687eac | 1323 | args.ar_commit = 30; |
3d3c10f2 BM |
1324 | args.ar_statfs_quantum = 30; |
1325 | args.ar_quota_quantum = 60; | |
f55073ff SW |
1326 | args.ar_errors = GFS2_ERRORS_DEFAULT; |
1327 | ||
1328 | error = gfs2_mount_args(&args, data); | |
1329 | if (error) { | |
1330 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); | |
8bcbbf00 | 1331 | goto error_super; |
f55073ff SW |
1332 | } |
1333 | ||
1334 | if (s->s_root) { | |
1335 | error = -EBUSY; | |
1336 | if ((flags ^ s->s_flags) & MS_RDONLY) | |
1337 | goto error_super; | |
f55073ff SW |
1338 | } else { |
1339 | char b[BDEVNAME_SIZE]; | |
1340 | ||
f55073ff SW |
1341 | s->s_mode = mode; |
1342 | strlcpy(s->s_id, bdevname(bdev, b), sizeof(s->s_id)); | |
1343 | sb_set_blocksize(s, block_size(bdev)); | |
1344 | error = fill_super(s, &args, flags & MS_SILENT ? 1 : 0); | |
8bcbbf00 AV |
1345 | if (error) |
1346 | goto error_super; | |
f55073ff SW |
1347 | s->s_flags |= MS_ACTIVE; |
1348 | bdev->bd_super = s; | |
1349 | } | |
1350 | ||
1351 | sdp = s->s_fs_info; | |
f55073ff | 1352 | if (args.ar_meta) |
8bcbbf00 | 1353 | return dget(sdp->sd_master_dir); |
f55073ff | 1354 | else |
8bcbbf00 | 1355 | return dget(sdp->sd_root_dir); |
f55073ff SW |
1356 | |
1357 | error_super: | |
1358 | deactivate_locked_super(s); | |
8bcbbf00 | 1359 | return ERR_PTR(error); |
f55073ff | 1360 | error_bdev: |
d4d77629 | 1361 | blkdev_put(bdev, mode); |
8bcbbf00 | 1362 | return ERR_PTR(error); |
f55073ff SW |
1363 | } |
1364 | ||
f6d03139 SW |
1365 | static int set_meta_super(struct super_block *s, void *ptr) |
1366 | { | |
1367 | return -EINVAL; | |
1368 | } | |
1369 | ||
8bcbbf00 AV |
1370 | static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type, |
1371 | int flags, const char *dev_name, void *data) | |
86384605 | 1372 | { |
f6d03139 | 1373 | struct super_block *s; |
003dec89 | 1374 | struct gfs2_sbd *sdp; |
e24977d4 | 1375 | struct path path; |
86384605 | 1376 | int error; |
907b9bce | 1377 | |
e24977d4 | 1378 | error = kern_path(dev_name, LOOKUP_FOLLOW, &path); |
86384605 | 1379 | if (error) { |
9b8df98f SW |
1380 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error %d\n", |
1381 | dev_name, error); | |
8bcbbf00 | 1382 | return ERR_PTR(error); |
86384605 | 1383 | } |
9249e17f | 1384 | s = sget(&gfs2_fs_type, test_gfs2_super, set_meta_super, flags, |
f6d03139 | 1385 | path.dentry->d_inode->i_sb->s_bdev); |
e24977d4 | 1386 | path_put(&path); |
f6d03139 | 1387 | if (IS_ERR(s)) { |
86384605 | 1388 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); |
8bcbbf00 | 1389 | return ERR_CAST(s); |
86384605 | 1390 | } |
f55073ff SW |
1391 | if ((flags ^ s->s_flags) & MS_RDONLY) { |
1392 | deactivate_locked_super(s); | |
8bcbbf00 | 1393 | return ERR_PTR(-EBUSY); |
f55073ff | 1394 | } |
f6d03139 | 1395 | sdp = s->s_fs_info; |
8bcbbf00 | 1396 | return dget(sdp->sd_master_dir); |
b3b94faa DT |
1397 | } |
1398 | ||
419c93e0 | 1399 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1400 | { |
1401 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1402 | |
1403 | if (sdp == NULL) { | |
1404 | kill_block_super(sb); | |
1405 | return; | |
3af165ac | 1406 | } |
88a19ad0 SW |
1407 | |
1408 | gfs2_meta_syncfs(sdp); | |
1409 | dput(sdp->sd_root_dir); | |
1410 | dput(sdp->sd_master_dir); | |
1411 | sdp->sd_root_dir = NULL; | |
1412 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1413 | shrink_dcache_sb(sb); |
88a19ad0 | 1414 | gfs2_delete_debugfs_file(sdp); |
a245769f | 1415 | free_percpu(sdp->sd_lkstats); |
0d515210 | 1416 | kill_block_super(sb); |
86384605 AD |
1417 | } |
1418 | ||
b3b94faa DT |
1419 | struct file_system_type gfs2_fs_type = { |
1420 | .name = "gfs2", | |
1421 | .fs_flags = FS_REQUIRES_DEV, | |
8bcbbf00 | 1422 | .mount = gfs2_mount, |
419c93e0 SW |
1423 | .kill_sb = gfs2_kill_sb, |
1424 | .owner = THIS_MODULE, | |
1425 | }; | |
1426 | ||
1427 | struct file_system_type gfs2meta_fs_type = { | |
1428 | .name = "gfs2meta", | |
1429 | .fs_flags = FS_REQUIRES_DEV, | |
8bcbbf00 | 1430 | .mount = gfs2_mount_meta, |
b3b94faa DT |
1431 | .owner = THIS_MODULE, |
1432 | }; | |
1433 |