Commit | Line | Data |
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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 4 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
d77d1b58 JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
b3b94faa DT |
9 | #include <linux/sched.h> |
10 | #include <linux/slab.h> | |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
b3b94faa DT |
14 | #include <linux/blkdev.h> |
15 | #include <linux/kthread.h> | |
afeacc8c | 16 | #include <linux/export.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> |
56aa72d0 | 21 | #include <linux/lockdep.h> |
7f78e035 | 22 | #include <linux/module.h> |
95fe66de | 23 | #include <linux/backing-dev.h> |
1f52aa08 | 24 | #include <linux/fs_parser.h> |
b3b94faa DT |
25 | |
26 | #include "gfs2.h" | |
5c676f6d | 27 | #include "incore.h" |
da6dd40d | 28 | #include "bmap.h" |
b3b94faa DT |
29 | #include "glock.h" |
30 | #include "glops.h" | |
31 | #include "inode.h" | |
b3b94faa DT |
32 | #include "recovery.h" |
33 | #include "rgrp.h" | |
34 | #include "super.h" | |
b3b94faa | 35 | #include "sys.h" |
5c676f6d | 36 | #include "util.h" |
bb3b0e3d | 37 | #include "log.h" |
9ac1b4d9 | 38 | #include "quota.h" |
b5289681 | 39 | #include "dir.h" |
70d4ee94 | 40 | #include "meta_io.h" |
63997775 | 41 | #include "trace_gfs2.h" |
f4686c26 | 42 | #include "lops.h" |
b3b94faa DT |
43 | |
44 | #define DO 0 | |
45 | #define UNDO 1 | |
46 | ||
9b8df98f SW |
47 | /** |
48 | * gfs2_tune_init - Fill a gfs2_tune structure with default values | |
49 | * @gt: tune | |
50 | * | |
51 | */ | |
52 | ||
53 | static void gfs2_tune_init(struct gfs2_tune *gt) | |
54 | { | |
55 | spin_lock_init(>->gt_spin); | |
56 | ||
9b8df98f SW |
57 | gt->gt_quota_warn_period = 10; |
58 | gt->gt_quota_scale_num = 1; | |
59 | gt->gt_quota_scale_den = 1; | |
9b8df98f | 60 | gt->gt_new_files_jdata = 0; |
47a9a527 | 61 | gt->gt_max_readahead = BIT(18); |
9b8df98f | 62 | gt->gt_complain_secs = 10; |
9b8df98f SW |
63 | } |
64 | ||
2a27b755 AG |
65 | void free_sbd(struct gfs2_sbd *sdp) |
66 | { | |
67 | if (sdp->sd_lkstats) | |
68 | free_percpu(sdp->sd_lkstats); | |
69 | kfree(sdp); | |
70 | } | |
71 | ||
b3b94faa DT |
72 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
73 | { | |
74 | struct gfs2_sbd *sdp; | |
70d4ee94 | 75 | struct address_space *mapping; |
b3b94faa | 76 | |
85d1da67 | 77 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
78 | if (!sdp) |
79 | return NULL; | |
80 | ||
b3b94faa | 81 | sdp->sd_vfs = sb; |
a245769f | 82 | sdp->sd_lkstats = alloc_percpu(struct gfs2_pcpu_lkstats); |
2a27b755 AG |
83 | if (!sdp->sd_lkstats) |
84 | goto fail; | |
4c62bd9c | 85 | sb->s_fs_info = sdp; |
a245769f | 86 | |
ba6e9364 | 87 | set_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
b3b94faa DT |
88 | gfs2_tune_init(&sdp->sd_tune); |
89 | ||
3c69c437 | 90 | init_waitqueue_head(&sdp->sd_kill_wait); |
ad26967b | 91 | init_waitqueue_head(&sdp->sd_async_glock_wait); |
e402746a | 92 | atomic_set(&sdp->sd_glock_disposal, 0); |
3942ae53 | 93 | init_completion(&sdp->sd_locking_init); |
fd95e81c | 94 | init_completion(&sdp->sd_wdack); |
b3b94faa | 95 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
96 | |
97 | spin_lock_init(&sdp->sd_rindex_spin); | |
7c9ca621 | 98 | sdp->sd_rindex_tree.rb_node = NULL; |
b3b94faa DT |
99 | |
100 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
101 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 102 | mutex_init(&sdp->sd_jindex_mutex); |
0e48e055 | 103 | init_completion(&sdp->sd_journal_ready); |
b3b94faa | 104 | |
b3b94faa | 105 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
f55ab26a | 106 | mutex_init(&sdp->sd_quota_mutex); |
e46c772d | 107 | mutex_init(&sdp->sd_quota_sync_mutex); |
37b2c837 | 108 | init_waitqueue_head(&sdp->sd_quota_wait); |
2d9e7230 | 109 | spin_lock_init(&sdp->sd_bitmap_lock); |
b3b94faa | 110 | |
97fd734b AD |
111 | INIT_LIST_HEAD(&sdp->sd_sc_inodes_list); |
112 | ||
70d4ee94 SW |
113 | mapping = &sdp->sd_aspace; |
114 | ||
39849d69 | 115 | address_space_init_once(mapping); |
1b2ad412 | 116 | mapping->a_ops = &gfs2_rgrp_aops; |
70d4ee94 SW |
117 | mapping->host = sb->s_bdev->bd_inode; |
118 | mapping->flags = 0; | |
119 | mapping_set_gfp_mask(mapping, GFP_NOFS); | |
600f111e | 120 | mapping->i_private_data = NULL; |
70d4ee94 SW |
121 | mapping->writeback_index = 0; |
122 | ||
b3b94faa | 123 | spin_lock_init(&sdp->sd_log_lock); |
5e687eac | 124 | atomic_set(&sdp->sd_log_pinned, 0); |
a5b1d3fc AG |
125 | INIT_LIST_HEAD(&sdp->sd_log_revokes); |
126 | INIT_LIST_HEAD(&sdp->sd_log_ordered); | |
45138990 | 127 | spin_lock_init(&sdp->sd_ordered_lock); |
b3b94faa | 128 | |
5e687eac BM |
129 | init_waitqueue_head(&sdp->sd_log_waitq); |
130 | init_waitqueue_head(&sdp->sd_logd_waitq); | |
d6a079e8 | 131 | spin_lock_init(&sdp->sd_ail_lock); |
b3b94faa DT |
132 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
133 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
134 | ||
484adff8 | 135 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
136 | atomic_set(&sdp->sd_log_in_flight, 0); |
137 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
2e60d768 | 138 | mutex_init(&sdp->sd_freeze_mutex); |
d98779e6 | 139 | INIT_LIST_HEAD(&sdp->sd_dead_glocks); |
b3b94faa | 140 | |
b3b94faa | 141 | return sdp; |
b3b94faa | 142 | |
2a27b755 AG |
143 | fail: |
144 | free_sbd(sdp); | |
145 | return NULL; | |
146 | } | |
b3b94faa | 147 | |
9b8df98f SW |
148 | /** |
149 | * gfs2_check_sb - Check superblock | |
150 | * @sdp: the filesystem | |
9b8df98f SW |
151 | * @silent: Don't print a message if the check fails |
152 | * | |
153 | * Checks the version code of the FS is one that we understand how to | |
154 | * read and that the sizes of the various on-disk structures have not | |
155 | * changed. | |
156 | */ | |
157 | ||
32e471ef | 158 | static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f | 159 | { |
32e471ef SW |
160 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
161 | ||
9b8df98f SW |
162 | if (sb->sb_magic != GFS2_MAGIC || |
163 | sb->sb_type != GFS2_METATYPE_SB) { | |
164 | if (!silent) | |
d77d1b58 | 165 | pr_warn("not a GFS2 filesystem\n"); |
9b8df98f SW |
166 | return -EINVAL; |
167 | } | |
168 | ||
47b7ec1d AP |
169 | if (sb->sb_fs_format < GFS2_FS_FORMAT_MIN || |
170 | sb->sb_fs_format > GFS2_FS_FORMAT_MAX || | |
0ddc5154 AT |
171 | sb->sb_multihost_format != GFS2_FORMAT_MULTI) { |
172 | fs_warn(sdp, "Unknown on-disk format, unable to mount\n"); | |
173 | return -EINVAL; | |
174 | } | |
9b8df98f | 175 | |
0ddc5154 AT |
176 | if (sb->sb_bsize < 512 || sb->sb_bsize > PAGE_SIZE || |
177 | (sb->sb_bsize & (sb->sb_bsize - 1))) { | |
bff2e532 | 178 | pr_warn("Invalid block size\n"); |
0ddc5154 AT |
179 | return -EINVAL; |
180 | } | |
670f8ce5 AP |
181 | if (sb->sb_bsize_shift != ffs(sb->sb_bsize) - 1) { |
182 | pr_warn("Invalid block size shift\n"); | |
183 | return -EINVAL; | |
184 | } | |
0ddc5154 | 185 | return 0; |
9b8df98f SW |
186 | } |
187 | ||
75377ae7 | 188 | static void gfs2_sb_in(struct gfs2_sbd *sdp, const struct gfs2_sb *str) |
9b8df98f | 189 | { |
32e471ef SW |
190 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
191 | struct super_block *s = sdp->sd_vfs; | |
9b8df98f SW |
192 | |
193 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
194 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
9b8df98f SW |
195 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); |
196 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
197 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
198 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
199 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
200 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
201 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
202 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
203 | ||
204 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
205 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
85787090 | 206 | memcpy(&s->s_uuid, str->sb_uuid, 16); |
9b8df98f SW |
207 | } |
208 | ||
209 | /** | |
210 | * gfs2_read_super - Read the gfs2 super block from disk | |
211 | * @sdp: The GFS2 super block | |
212 | * @sector: The location of the super block | |
c551f66c | 213 | * @silent: Don't print a message if the check fails |
9b8df98f SW |
214 | * |
215 | * This uses the bio functions to read the super block from disk | |
216 | * because we want to be 100% sure that we never read cached data. | |
217 | * A super block is read twice only during each GFS2 mount and is | |
218 | * never written to by the filesystem. The first time its read no | |
219 | * locks are held, and the only details which are looked at are those | |
220 | * relating to the locking protocol. Once locking is up and working, | |
221 | * the sb is read again under the lock to establish the location of | |
222 | * the master directory (contains pointers to journals etc) and the | |
223 | * root directory. | |
224 | * | |
225 | * Returns: 0 on success or error | |
226 | */ | |
227 | ||
32e471ef | 228 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) |
9b8df98f SW |
229 | { |
230 | struct super_block *sb = sdp->sd_vfs; | |
9b8df98f | 231 | struct page *page; |
75377ae7 MWO |
232 | struct bio_vec bvec; |
233 | struct bio bio; | |
234 | int err; | |
9b8df98f | 235 | |
75377ae7 | 236 | page = alloc_page(GFP_KERNEL); |
9b8df98f | 237 | if (unlikely(!page)) |
ac3beb6a | 238 | return -ENOMEM; |
9b8df98f | 239 | |
75377ae7 MWO |
240 | bio_init(&bio, sb->s_bdev, &bvec, 1, REQ_OP_READ | REQ_META); |
241 | bio.bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); | |
242 | __bio_add_page(&bio, page, PAGE_SIZE, 0); | |
9b8df98f | 243 | |
75377ae7 MWO |
244 | err = submit_bio_wait(&bio); |
245 | if (err) { | |
246 | pr_warn("error %d reading superblock\n", err); | |
9b8df98f | 247 | __free_page(page); |
75377ae7 | 248 | return err; |
9b8df98f | 249 | } |
75377ae7 | 250 | gfs2_sb_in(sdp, page_address(page)); |
9b8df98f | 251 | __free_page(page); |
32e471ef | 252 | return gfs2_check_sb(sdp, silent); |
9b8df98f | 253 | } |
6bac243f | 254 | |
9b8df98f SW |
255 | /** |
256 | * gfs2_read_sb - Read super block | |
257 | * @sdp: The GFS2 superblock | |
9b8df98f SW |
258 | * @silent: Don't print message if mount fails |
259 | * | |
260 | */ | |
261 | ||
6bac243f | 262 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f SW |
263 | { |
264 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
265 | u32 tmp_blocks; | |
266 | unsigned int x; | |
267 | int error; | |
268 | ||
32e471ef | 269 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
9b8df98f SW |
270 | if (error) { |
271 | if (!silent) | |
272 | fs_err(sdp, "can't read superblock\n"); | |
273 | return error; | |
274 | } | |
275 | ||
13587069 | 276 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - 9; |
47a9a527 | 277 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
9b8df98f SW |
278 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
279 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
280 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
281 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
2e9eeaa1 BP |
282 | sdp->sd_ldptrs = (sdp->sd_sb.sb_bsize - |
283 | sizeof(struct gfs2_log_descriptor)) / sizeof(u64); | |
9b8df98f SW |
284 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
285 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
286 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
287 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
288 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
289 | sizeof(struct gfs2_meta_header)) / | |
290 | sizeof(struct gfs2_quota_change); | |
a68a0a35 BP |
291 | sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize - |
292 | sizeof(struct gfs2_meta_header)) | |
293 | * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */ | |
9b8df98f | 294 | |
2129b428 AG |
295 | /* |
296 | * We always keep at least one block reserved for revokes in | |
297 | * transactions. This greatly simplifies allocating additional | |
298 | * revoke blocks. | |
299 | */ | |
300 | atomic_set(&sdp->sd_log_revokes_available, sdp->sd_ldptrs); | |
301 | ||
9b8df98f SW |
302 | /* Compute maximum reservation required to add a entry to a directory */ |
303 | ||
47a9a527 | 304 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * BIT(GFS2_DIR_MAX_DEPTH), |
9b8df98f SW |
305 | sdp->sd_jbsize); |
306 | ||
307 | ind_blocks = 0; | |
308 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
309 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
310 | ind_blocks += tmp_blocks; | |
311 | } | |
312 | ||
313 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
314 | ||
315 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
316 | ||
317 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
318 | sizeof(struct gfs2_dinode); | |
319 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
320 | for (x = 2;; x++) { | |
321 | u64 space, d; | |
322 | u32 m; | |
323 | ||
324 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
325 | d = space; | |
326 | m = do_div(d, sdp->sd_inptrs); | |
327 | ||
328 | if (d != sdp->sd_heightsize[x - 1] || m) | |
329 | break; | |
330 | sdp->sd_heightsize[x] = space; | |
331 | } | |
332 | sdp->sd_max_height = x; | |
333 | sdp->sd_heightsize[x] = ~0; | |
334 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
335 | ||
471f3db2 BM |
336 | sdp->sd_max_dents_per_leaf = (sdp->sd_sb.sb_bsize - |
337 | sizeof(struct gfs2_leaf)) / | |
338 | GFS2_MIN_DIRENT_SIZE; | |
9b8df98f SW |
339 | return 0; |
340 | } | |
341 | ||
b3b94faa DT |
342 | static int init_names(struct gfs2_sbd *sdp, int silent) |
343 | { | |
b3b94faa DT |
344 | char *proto, *table; |
345 | int error = 0; | |
346 | ||
347 | proto = sdp->sd_args.ar_lockproto; | |
348 | table = sdp->sd_args.ar_locktable; | |
349 | ||
350 | /* Try to autodetect */ | |
351 | ||
352 | if (!proto[0] || !table[0]) { | |
32e471ef | 353 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
bb8d8a6f SW |
354 | if (error) |
355 | return error; | |
3cf1e7be | 356 | |
b3b94faa | 357 | if (!proto[0]) |
3cf1e7be | 358 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 359 | if (!table[0]) |
3cf1e7be | 360 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
361 | } |
362 | ||
363 | if (!table[0]) | |
364 | table = sdp->sd_vfs->s_id; | |
365 | ||
204c0300 AG |
366 | BUILD_BUG_ON(GFS2_LOCKNAME_LEN > GFS2_FSNAME_LEN); |
367 | ||
368 | strscpy(sdp->sd_proto_name, proto, GFS2_LOCKNAME_LEN); | |
369 | strscpy(sdp->sd_table_name, table, GFS2_LOCKNAME_LEN); | |
b3b94faa | 370 | |
5d35e31f DC |
371 | table = sdp->sd_table_name; |
372 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
373 | *table = '_'; |
374 | ||
b3b94faa DT |
375 | return error; |
376 | } | |
377 | ||
378 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
379 | int undo) | |
380 | { | |
b3b94faa DT |
381 | int error = 0; |
382 | ||
383 | if (undo) | |
384 | goto fail_trans; | |
385 | ||
b3b94faa DT |
386 | error = gfs2_glock_nq_num(sdp, |
387 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
ebdc416c AG |
388 | LM_ST_EXCLUSIVE, |
389 | LM_FLAG_NOEXP | GL_NOCACHE | GL_NOPID, | |
b3b94faa DT |
390 | mount_gh); |
391 | if (error) { | |
392 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
393 | goto fail; | |
394 | } | |
395 | ||
396 | error = gfs2_glock_nq_num(sdp, | |
397 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
398 | LM_ST_SHARED, | |
ebdc416c | 399 | LM_FLAG_NOEXP | GL_EXACT | GL_NOPID, |
b3b94faa DT |
400 | &sdp->sd_live_gh); |
401 | if (error) { | |
402 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
403 | goto fail_mount; | |
404 | } | |
405 | ||
406 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
407 | CREATE, &sdp->sd_rename_gl); | |
408 | if (error) { | |
409 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
410 | goto fail_live; | |
411 | } | |
412 | ||
24972557 BM |
413 | error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops, |
414 | CREATE, &sdp->sd_freeze_gl); | |
b3b94faa | 415 | if (error) { |
af1abe11 | 416 | fs_err(sdp, "can't create freeze glock: %d\n", error); |
b3b94faa DT |
417 | goto fail_rename; |
418 | } | |
b3b94faa DT |
419 | |
420 | return 0; | |
421 | ||
feaa7bba | 422 | fail_trans: |
24972557 | 423 | gfs2_glock_put(sdp->sd_freeze_gl); |
feaa7bba | 424 | fail_rename: |
b3b94faa | 425 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 426 | fail_live: |
b3b94faa | 427 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 428 | fail_mount: |
b3b94faa | 429 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 430 | fail: |
b3b94faa DT |
431 | return error; |
432 | } | |
433 | ||
9b8df98f SW |
434 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
435 | u64 no_addr, const char *name) | |
f42faf4f | 436 | { |
9b8df98f SW |
437 | struct gfs2_sbd *sdp = sb->s_fs_info; |
438 | struct dentry *dentry; | |
439 | struct inode *inode; | |
440 | ||
3ce37b2c AG |
441 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, |
442 | GFS2_BLKST_FREE /* ignore */); | |
9b8df98f SW |
443 | if (IS_ERR(inode)) { |
444 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
445 | return PTR_ERR(inode); | |
446 | } | |
48fde701 | 447 | dentry = d_make_root(inode); |
9b8df98f SW |
448 | if (!dentry) { |
449 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
9b8df98f SW |
450 | return -ENOMEM; |
451 | } | |
9b8df98f SW |
452 | *dptr = dentry; |
453 | return 0; | |
f42faf4f SW |
454 | } |
455 | ||
9b8df98f | 456 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
457 | { |
458 | struct super_block *sb = sdp->sd_vfs; | |
459 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 460 | u64 no_addr; |
9b8df98f | 461 | int ret; |
b3b94faa | 462 | |
9b8df98f SW |
463 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
464 | LM_ST_SHARED, 0, &sb_gh); | |
465 | if (ret) { | |
466 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
467 | return ret; | |
b3b94faa | 468 | } |
907b9bce | 469 | |
6bac243f | 470 | ret = gfs2_read_sb(sdp, silent); |
9b8df98f SW |
471 | if (ret) { |
472 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
473 | goto out; |
474 | } | |
475 | ||
866eef48 AG |
476 | switch(sdp->sd_sb.sb_fs_format) { |
477 | case GFS2_FS_FORMAT_MAX: | |
478 | sb->s_xattr = gfs2_xattr_handlers_max; | |
479 | break; | |
480 | ||
481 | case GFS2_FS_FORMAT_MIN: | |
482 | sb->s_xattr = gfs2_xattr_handlers_min; | |
483 | break; | |
484 | ||
485 | default: | |
486 | BUG(); | |
487 | } | |
488 | ||
b3b94faa | 489 | /* Set up the buffer cache and SB for real */ |
e1defc4f | 490 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
9b8df98f | 491 | ret = -EINVAL; |
b3b94faa DT |
492 | fs_err(sdp, "FS block size (%u) is too small for device " |
493 | "block size (%u)\n", | |
e1defc4f | 494 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
b3b94faa DT |
495 | goto out; |
496 | } | |
497 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 498 | ret = -EINVAL; |
b3b94faa DT |
499 | fs_err(sdp, "FS block size (%u) is too big for machine " |
500 | "page size (%u)\n", | |
501 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
502 | goto out; | |
503 | } | |
b3b94faa DT |
504 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
505 | ||
f42faf4f | 506 | /* Get the root inode */ |
dbb7cae2 | 507 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
508 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
509 | if (ret) | |
f42faf4f | 510 | goto out; |
b3b94faa | 511 | |
9b8df98f SW |
512 | /* Get the master inode */ |
513 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
514 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
515 | if (ret) { | |
516 | dput(sdp->sd_root_dir); | |
517 | goto out; | |
518 | } | |
519 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 520 | out: |
b3b94faa | 521 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 522 | return ret; |
b3b94faa DT |
523 | } |
524 | ||
f057f6cd | 525 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
da755fdb | 526 | { |
f057f6cd SW |
527 | char *message = "FIRSTMOUNT=Done"; |
528 | char *envp[] = { message, NULL }; | |
e0c2a9aa DT |
529 | |
530 | fs_info(sdp, "first mount done, others may mount\n"); | |
531 | ||
532 | if (sdp->sd_lockstruct.ls_ops->lm_first_done) | |
533 | sdp->sd_lockstruct.ls_ops->lm_first_done(sdp); | |
534 | ||
f057f6cd | 535 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
da755fdb SW |
536 | } |
537 | ||
b5289681 SW |
538 | /** |
539 | * gfs2_jindex_hold - Grab a lock on the jindex | |
540 | * @sdp: The GFS2 superblock | |
541 | * @ji_gh: the holder for the jindex glock | |
542 | * | |
543 | * Returns: errno | |
544 | */ | |
545 | ||
546 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) | |
547 | { | |
548 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); | |
549 | struct qstr name; | |
550 | char buf[20]; | |
551 | struct gfs2_jdesc *jd; | |
552 | int error; | |
553 | ||
554 | name.name = buf; | |
555 | ||
556 | mutex_lock(&sdp->sd_jindex_mutex); | |
557 | ||
558 | for (;;) { | |
a72d2401 BP |
559 | struct gfs2_inode *jip; |
560 | ||
b5289681 SW |
561 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
562 | if (error) | |
563 | break; | |
564 | ||
565 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
566 | name.hash = gfs2_disk_hash(name.name, name.len); | |
567 | ||
568 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
569 | if (error == -ENOENT) { | |
570 | error = 0; | |
571 | break; | |
572 | } | |
573 | ||
574 | gfs2_glock_dq_uninit(ji_gh); | |
575 | ||
576 | if (error) | |
577 | break; | |
578 | ||
579 | error = -ENOMEM; | |
580 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
581 | if (!jd) | |
582 | break; | |
583 | ||
584 | INIT_LIST_HEAD(&jd->extent_list); | |
a17d758b BP |
585 | INIT_LIST_HEAD(&jd->jd_revoke_list); |
586 | ||
6ecd7c2d | 587 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 | 588 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
15a798f7 | 589 | if (IS_ERR_OR_NULL(jd->jd_inode)) { |
b5289681 SW |
590 | if (!jd->jd_inode) |
591 | error = -ENOENT; | |
592 | else | |
593 | error = PTR_ERR(jd->jd_inode); | |
594 | kfree(jd); | |
595 | break; | |
596 | } | |
597 | ||
1b8550b5 | 598 | d_mark_dontcache(jd->jd_inode); |
b5289681 SW |
599 | spin_lock(&sdp->sd_jindex_spin); |
600 | jd->jd_jid = sdp->sd_journals++; | |
a72d2401 BP |
601 | jip = GFS2_I(jd->jd_inode); |
602 | jd->jd_no_addr = jip->i_no_addr; | |
b5289681 SW |
603 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
604 | spin_unlock(&sdp->sd_jindex_spin); | |
605 | } | |
606 | ||
607 | mutex_unlock(&sdp->sd_jindex_mutex); | |
608 | ||
609 | return error; | |
610 | } | |
611 | ||
97fd734b AD |
612 | /** |
613 | * init_statfs - look up and initialize master and local (per node) statfs inodes | |
614 | * @sdp: The GFS2 superblock | |
615 | * | |
616 | * This should be called after the jindex is initialized in init_journal() and | |
617 | * before gfs2_journal_recovery() is called because we need to be able to write | |
618 | * to these inodes during recovery. | |
619 | * | |
620 | * Returns: errno | |
621 | */ | |
622 | static int init_statfs(struct gfs2_sbd *sdp) | |
623 | { | |
624 | int error = 0; | |
625 | struct inode *master = d_inode(sdp->sd_master_dir); | |
626 | struct inode *pn = NULL; | |
627 | char buf[30]; | |
628 | struct gfs2_jdesc *jd; | |
629 | struct gfs2_inode *ip; | |
630 | ||
062fb903 | 631 | sdp->sd_statfs_inode = gfs2_lookup_meta(master, "statfs"); |
97fd734b AD |
632 | if (IS_ERR(sdp->sd_statfs_inode)) { |
633 | error = PTR_ERR(sdp->sd_statfs_inode); | |
634 | fs_err(sdp, "can't read in statfs inode: %d\n", error); | |
7e5b9266 | 635 | goto out; |
97fd734b | 636 | } |
7e5b9266 BP |
637 | if (sdp->sd_args.ar_spectator) |
638 | goto out; | |
97fd734b | 639 | |
062fb903 | 640 | pn = gfs2_lookup_meta(master, "per_node"); |
97fd734b AD |
641 | if (IS_ERR(pn)) { |
642 | error = PTR_ERR(pn); | |
643 | fs_err(sdp, "can't find per_node directory: %d\n", error); | |
644 | goto put_statfs; | |
645 | } | |
646 | ||
647 | /* For each jid, lookup the corresponding local statfs inode in the | |
648 | * per_node metafs directory and save it in the sdp->sd_sc_inodes_list. */ | |
649 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
650 | struct local_statfs_inode *lsi = | |
651 | kmalloc(sizeof(struct local_statfs_inode), GFP_NOFS); | |
652 | if (!lsi) { | |
653 | error = -ENOMEM; | |
654 | goto free_local; | |
655 | } | |
656 | sprintf(buf, "statfs_change%u", jd->jd_jid); | |
062fb903 | 657 | lsi->si_sc_inode = gfs2_lookup_meta(pn, buf); |
97fd734b AD |
658 | if (IS_ERR(lsi->si_sc_inode)) { |
659 | error = PTR_ERR(lsi->si_sc_inode); | |
660 | fs_err(sdp, "can't find local \"sc\" file#%u: %d\n", | |
661 | jd->jd_jid, error); | |
a6579cbf | 662 | kfree(lsi); |
97fd734b AD |
663 | goto free_local; |
664 | } | |
665 | lsi->si_jid = jd->jd_jid; | |
666 | if (jd->jd_jid == sdp->sd_jdesc->jd_jid) | |
667 | sdp->sd_sc_inode = lsi->si_sc_inode; | |
668 | ||
669 | list_add_tail(&lsi->si_list, &sdp->sd_sc_inodes_list); | |
670 | } | |
671 | ||
672 | iput(pn); | |
5d49d350 | 673 | pn = NULL; |
97fd734b | 674 | ip = GFS2_I(sdp->sd_sc_inode); |
ebdc416c | 675 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_NOPID, |
97fd734b AD |
676 | &sdp->sd_sc_gh); |
677 | if (error) { | |
678 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
679 | goto free_local; | |
680 | } | |
70c11ba8 BP |
681 | /* read in the local statfs buffer - other nodes don't change it. */ |
682 | error = gfs2_meta_inode_buffer(ip, &sdp->sd_sc_bh); | |
683 | if (error) { | |
684 | fs_err(sdp, "Cannot read in local statfs: %d\n", error); | |
685 | goto unlock_sd_gh; | |
686 | } | |
97fd734b AD |
687 | return 0; |
688 | ||
70c11ba8 BP |
689 | unlock_sd_gh: |
690 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
97fd734b AD |
691 | free_local: |
692 | free_local_statfs_inodes(sdp); | |
693 | iput(pn); | |
694 | put_statfs: | |
695 | iput(sdp->sd_statfs_inode); | |
7e5b9266 | 696 | out: |
97fd734b AD |
697 | return error; |
698 | } | |
699 | ||
700 | /* Uninitialize and free up memory used by the list of statfs inodes */ | |
701 | static void uninit_statfs(struct gfs2_sbd *sdp) | |
702 | { | |
7e5b9266 | 703 | if (!sdp->sd_args.ar_spectator) { |
70c11ba8 | 704 | brelse(sdp->sd_sc_bh); |
7e5b9266 BP |
705 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
706 | free_local_statfs_inodes(sdp); | |
707 | } | |
97fd734b AD |
708 | iput(sdp->sd_statfs_inode); |
709 | } | |
710 | ||
b3b94faa DT |
711 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
712 | { | |
2b0143b5 | 713 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa | 714 | struct gfs2_holder ji_gh; |
5c676f6d | 715 | struct gfs2_inode *ip; |
b3b94faa DT |
716 | int error = 0; |
717 | ||
130cf526 BP |
718 | gfs2_holder_mark_uninitialized(&ji_gh); |
719 | if (undo) | |
c4af59bd | 720 | goto fail_statfs; |
b3b94faa | 721 | |
062fb903 | 722 | sdp->sd_jindex = gfs2_lookup_meta(master, "jindex"); |
c752666c | 723 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 724 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 725 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 726 | } |
b3b94faa DT |
727 | |
728 | /* Load in the journal index special file */ | |
729 | ||
730 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
731 | if (error) { | |
732 | fs_err(sdp, "can't read journal index: %d\n", error); | |
733 | goto fail; | |
734 | } | |
735 | ||
0e5a9fb0 | 736 | error = -EUSERS; |
b3b94faa DT |
737 | if (!gfs2_jindex_size(sdp)) { |
738 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 739 | goto fail_jindex; |
b3b94faa DT |
740 | } |
741 | ||
f07b3520 | 742 | atomic_set(&sdp->sd_log_blks_needed, 0); |
b3b94faa DT |
743 | if (sdp->sd_args.ar_spectator) { |
744 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 745 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
746 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
747 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
748 | } else { |
749 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
750 | fs_err(sdp, "can't mount journal #%u\n", | |
751 | sdp->sd_lockstruct.ls_jid); | |
752 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
753 | gfs2_jindex_size(sdp), | |
754 | gfs2_jindex_size(sdp) - 1); | |
755 | goto fail_jindex; | |
756 | } | |
757 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
758 | ||
feaa7bba | 759 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa | 760 | &gfs2_journal_glops, |
601ef0d5 | 761 | LM_ST_EXCLUSIVE, |
ebdc416c | 762 | LM_FLAG_NOEXP | GL_NOCACHE | GL_NOPID, |
b3b94faa DT |
763 | &sdp->sd_journal_gh); |
764 | if (error) { | |
765 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
766 | goto fail_jindex; | |
767 | } | |
768 | ||
feaa7bba | 769 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
601ef0d5 | 770 | sdp->sd_jinode_gl = ip->i_gl; |
feaa7bba | 771 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, |
ebdc416c AG |
772 | LM_FLAG_NOEXP | GL_EXACT | |
773 | GL_NOCACHE | GL_NOPID, | |
b3b94faa DT |
774 | &sdp->sd_jinode_gh); |
775 | if (error) { | |
776 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
777 | error); | |
778 | goto fail_journal_gh; | |
779 | } | |
780 | ||
781 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
782 | if (error) { | |
783 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
784 | sdp->sd_jdesc->jd_jid, error); | |
785 | goto fail_jinode_gh; | |
786 | } | |
fd041f0b | 787 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
788 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
789 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
790 | |
791 | /* Map the extents for this journal's blocks */ | |
b50f227b | 792 | gfs2_map_journal_extents(sdp, sdp->sd_jdesc); |
b3b94faa | 793 | } |
63997775 | 794 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa | 795 | |
97fd734b AD |
796 | /* Lookup statfs inodes here so journal recovery can use them. */ |
797 | error = init_statfs(sdp); | |
798 | if (error) | |
799 | goto fail_jinode_gh; | |
800 | ||
b3b94faa DT |
801 | if (sdp->sd_lockstruct.ls_first) { |
802 | unsigned int x; | |
803 | for (x = 0; x < sdp->sd_journals; x++) { | |
1d12d175 BP |
804 | struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); |
805 | ||
806 | if (sdp->sd_args.ar_spectator) { | |
7d9f9249 | 807 | error = check_journal_clean(sdp, jd, true); |
1d12d175 | 808 | if (error) |
97fd734b | 809 | goto fail_statfs; |
1d12d175 BP |
810 | continue; |
811 | } | |
812 | error = gfs2_recover_journal(jd, true); | |
b3b94faa DT |
813 | if (error) { |
814 | fs_err(sdp, "error recovering journal %u: %d\n", | |
815 | x, error); | |
97fd734b | 816 | goto fail_statfs; |
b3b94faa DT |
817 | } |
818 | } | |
819 | ||
f057f6cd | 820 | gfs2_others_may_mount(sdp); |
b3b94faa | 821 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 822 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
823 | if (error) { |
824 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
97fd734b | 825 | goto fail_statfs; |
b3b94faa DT |
826 | } |
827 | } | |
828 | ||
086cc672 | 829 | sdp->sd_log_idle = 1; |
b3b94faa DT |
830 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
831 | gfs2_glock_dq_uninit(&ji_gh); | |
2e60d768 | 832 | INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func); |
b3b94faa DT |
833 | return 0; |
834 | ||
97fd734b AD |
835 | fail_statfs: |
836 | uninit_statfs(sdp); | |
a91ea69f | 837 | fail_jinode_gh: |
601ef0d5 BP |
838 | /* A withdraw may have done dq/uninit so now we need to check it */ |
839 | if (!sdp->sd_args.ar_spectator && | |
840 | gfs2_holder_initialized(&sdp->sd_jinode_gh)) | |
b3b94faa | 841 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
a91ea69f | 842 | fail_journal_gh: |
601ef0d5 BP |
843 | if (!sdp->sd_args.ar_spectator && |
844 | gfs2_holder_initialized(&sdp->sd_journal_gh)) | |
b3b94faa | 845 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
a91ea69f | 846 | fail_jindex: |
b3b94faa | 847 | gfs2_jindex_free(sdp); |
130cf526 | 848 | if (gfs2_holder_initialized(&ji_gh)) |
b3b94faa | 849 | gfs2_glock_dq_uninit(&ji_gh); |
a91ea69f | 850 | fail: |
f42faf4f | 851 | iput(sdp->sd_jindex); |
b3b94faa DT |
852 | return error; |
853 | } | |
854 | ||
56aa72d0 | 855 | static struct lock_class_key gfs2_quota_imutex_key; |
b3b94faa DT |
856 | |
857 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
858 | { | |
b3b94faa | 859 | int error = 0; |
2b0143b5 | 860 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
861 | |
862 | if (undo) | |
f42faf4f SW |
863 | goto fail_qinode; |
864 | ||
f42faf4f | 865 | error = init_journal(sdp, undo); |
0e48e055 | 866 | complete_all(&sdp->sd_journal_ready); |
f42faf4f | 867 | if (error) |
9b8df98f | 868 | goto fail; |
b3b94faa | 869 | |
b3b94faa | 870 | /* Read in the resource index inode */ |
062fb903 | 871 | sdp->sd_rindex = gfs2_lookup_meta(master, "rindex"); |
c752666c SW |
872 | if (IS_ERR(sdp->sd_rindex)) { |
873 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa | 874 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
97fd734b | 875 | goto fail_journal; |
b3b94faa | 876 | } |
cf45b752 | 877 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
878 | |
879 | /* Read in the quota inode */ | |
062fb903 | 880 | sdp->sd_quota_inode = gfs2_lookup_meta(master, "quota"); |
c752666c SW |
881 | if (IS_ERR(sdp->sd_quota_inode)) { |
882 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
883 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
884 | goto fail_rindex; | |
885 | } | |
56aa72d0 | 886 | /* |
3e7aafc3 | 887 | * i_rwsem on quota files is special. Since this inode is hidden system |
56aa72d0 JK |
888 | * file, we are safe to define locking ourselves. |
889 | */ | |
9902af79 | 890 | lockdep_set_class(&sdp->sd_quota_inode->i_rwsem, |
56aa72d0 | 891 | &gfs2_quota_imutex_key); |
a365fbf3 SW |
892 | |
893 | error = gfs2_rindex_update(sdp); | |
894 | if (error) | |
895 | goto fail_qinode; | |
896 | ||
b3b94faa DT |
897 | return 0; |
898 | ||
f42faf4f SW |
899 | fail_qinode: |
900 | iput(sdp->sd_quota_inode); | |
f42faf4f | 901 | fail_rindex: |
b3b94faa | 902 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 903 | iput(sdp->sd_rindex); |
f42faf4f SW |
904 | fail_journal: |
905 | init_journal(sdp, UNDO); | |
f42faf4f | 906 | fail: |
b3b94faa DT |
907 | return error; |
908 | } | |
909 | ||
910 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
911 | { | |
f42faf4f | 912 | struct inode *pn = NULL; |
b3b94faa DT |
913 | char buf[30]; |
914 | int error = 0; | |
5c676f6d | 915 | struct gfs2_inode *ip; |
2b0143b5 | 916 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
917 | |
918 | if (sdp->sd_args.ar_spectator) | |
919 | return 0; | |
920 | ||
921 | if (undo) | |
922 | goto fail_qc_gh; | |
923 | ||
062fb903 | 924 | pn = gfs2_lookup_meta(master, "per_node"); |
c752666c SW |
925 | if (IS_ERR(pn)) { |
926 | error = PTR_ERR(pn); | |
b3b94faa DT |
927 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
928 | return error; | |
929 | } | |
930 | ||
b3b94faa | 931 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
062fb903 | 932 | sdp->sd_qc_inode = gfs2_lookup_meta(pn, buf); |
c752666c SW |
933 | if (IS_ERR(sdp->sd_qc_inode)) { |
934 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
935 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
936 | goto fail_ut_i; | |
937 | } | |
938 | ||
f42faf4f | 939 | iput(pn); |
b3b94faa DT |
940 | pn = NULL; |
941 | ||
feaa7bba | 942 | ip = GFS2_I(sdp->sd_qc_inode); |
ebdc416c | 943 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_NOPID, |
b3b94faa DT |
944 | &sdp->sd_qc_gh); |
945 | if (error) { | |
946 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
97fd734b | 947 | goto fail_qc_i; |
b3b94faa DT |
948 | } |
949 | ||
950 | return 0; | |
951 | ||
a91ea69f | 952 | fail_qc_gh: |
b3b94faa | 953 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 954 | fail_qc_i: |
f42faf4f | 955 | iput(sdp->sd_qc_inode); |
a91ea69f | 956 | fail_ut_i: |
6fde2242 | 957 | iput(pn); |
b3b94faa DT |
958 | return error; |
959 | } | |
960 | ||
f057f6cd | 961 | static const match_table_t nolock_tokens = { |
ea22eee4 | 962 | { Opt_jid, "jid=%d", }, |
f057f6cd SW |
963 | { Opt_err, NULL }, |
964 | }; | |
965 | ||
966 | static const struct lm_lockops nolock_ops = { | |
967 | .lm_proto_name = "lock_nolock", | |
fc0e38da | 968 | .lm_put_lock = gfs2_glock_free, |
f057f6cd SW |
969 | .lm_tokens = &nolock_tokens, |
970 | }; | |
971 | ||
da755fdb SW |
972 | /** |
973 | * gfs2_lm_mount - mount a locking protocol | |
974 | * @sdp: the filesystem | |
da755fdb SW |
975 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
976 | * | |
977 | * Returns: errno | |
978 | */ | |
979 | ||
980 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
981 | { | |
f057f6cd SW |
982 | const struct lm_lockops *lm; |
983 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
984 | struct gfs2_args *args = &sdp->sd_args; | |
985 | const char *proto = sdp->sd_proto_name; | |
986 | const char *table = sdp->sd_table_name; | |
f057f6cd SW |
987 | char *o, *options; |
988 | int ret; | |
da755fdb | 989 | |
f057f6cd SW |
990 | if (!strcmp("lock_nolock", proto)) { |
991 | lm = &nolock_ops; | |
992 | sdp->sd_args.ar_localflocks = 1; | |
f057f6cd SW |
993 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
994 | } else if (!strcmp("lock_dlm", proto)) { | |
995 | lm = &gfs2_dlm_ops; | |
996 | #endif | |
997 | } else { | |
d77d1b58 | 998 | pr_info("can't find protocol %s\n", proto); |
f057f6cd SW |
999 | return -ENOENT; |
1000 | } | |
da755fdb SW |
1001 | |
1002 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
1003 | ||
f057f6cd SW |
1004 | ls->ls_ops = lm; |
1005 | ls->ls_first = 1; | |
da755fdb | 1006 | |
f057f6cd SW |
1007 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
1008 | substring_t tmp[MAX_OPT_ARGS]; | |
1009 | int token, option; | |
1010 | ||
1011 | if (!o || !*o) | |
1012 | continue; | |
1013 | ||
1014 | token = match_token(o, *lm->lm_tokens, tmp); | |
1015 | switch (token) { | |
1016 | case Opt_jid: | |
1017 | ret = match_int(&tmp[0], &option); | |
1018 | if (ret || option < 0) | |
1019 | goto hostdata_error; | |
ba6e9364 SW |
1020 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
1021 | ls->ls_jid = option; | |
f057f6cd SW |
1022 | break; |
1023 | case Opt_id: | |
4875647a | 1024 | case Opt_nodir: |
2b88f7c5 | 1025 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
1026 | break; |
1027 | case Opt_first: | |
1028 | ret = match_int(&tmp[0], &option); | |
1029 | if (ret || (option != 0 && option != 1)) | |
1030 | goto hostdata_error; | |
1031 | ls->ls_first = option; | |
1032 | break; | |
f057f6cd SW |
1033 | case Opt_err: |
1034 | default: | |
1035 | hostdata_error: | |
1036 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
1037 | return -EINVAL; | |
1038 | } | |
da755fdb SW |
1039 | } |
1040 | ||
f057f6cd | 1041 | if (lm->lm_mount == NULL) { |
47b7ec1d | 1042 | fs_info(sdp, "Now mounting FS (format %u)...\n", sdp->sd_sb.sb_fs_format); |
19237039 | 1043 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1044 | return 0; |
da755fdb | 1045 | } |
e0c2a9aa | 1046 | ret = lm->lm_mount(sdp, table); |
f057f6cd | 1047 | if (ret == 0) |
47b7ec1d AP |
1048 | fs_info(sdp, "Joined cluster. Now mounting FS (format %u)...\n", |
1049 | sdp->sd_sb.sb_fs_format); | |
19237039 | 1050 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1051 | return ret; |
da755fdb SW |
1052 | } |
1053 | ||
1054 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1055 | { | |
f057f6cd | 1056 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
4d927b03 | 1057 | if (!gfs2_withdrawing_or_withdrawn(sdp) && lm->lm_unmount) |
f057f6cd | 1058 | lm->lm_unmount(sdp); |
da755fdb | 1059 | } |
b3b94faa | 1060 | |
ba6e9364 SW |
1061 | static int wait_on_journal(struct gfs2_sbd *sdp) |
1062 | { | |
ba6e9364 SW |
1063 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
1064 | return 0; | |
1065 | ||
74316201 N |
1066 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, TASK_INTERRUPTIBLE) |
1067 | ? -EINTR : 0; | |
ba6e9364 SW |
1068 | } |
1069 | ||
8633ecfa SW |
1070 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
1071 | { | |
1072 | struct super_block *sb = sdp->sd_vfs; | |
1073 | char ro[20]; | |
1074 | char spectator[20]; | |
1075 | char *envp[] = { ro, spectator, NULL }; | |
bc98a42c | 1076 | sprintf(ro, "RDONLY=%d", sb_rdonly(sb)); |
8633ecfa SW |
1077 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
1078 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
1079 | } | |
1080 | ||
a28dc123 BP |
1081 | static int init_threads(struct gfs2_sbd *sdp) |
1082 | { | |
1083 | struct task_struct *p; | |
1084 | int error = 0; | |
1085 | ||
267d1a01 | 1086 | p = kthread_create(gfs2_logd, sdp, "gfs2_logd/%s", sdp->sd_fsname); |
a28dc123 BP |
1087 | if (IS_ERR(p)) { |
1088 | error = PTR_ERR(p); | |
fe4f7940 | 1089 | fs_err(sdp, "can't create logd thread: %d\n", error); |
a28dc123 BP |
1090 | return error; |
1091 | } | |
fe4f7940 | 1092 | get_task_struct(p); |
a28dc123 BP |
1093 | sdp->sd_logd_process = p; |
1094 | ||
267d1a01 | 1095 | p = kthread_create(gfs2_quotad, sdp, "gfs2_quotad/%s", sdp->sd_fsname); |
a28dc123 BP |
1096 | if (IS_ERR(p)) { |
1097 | error = PTR_ERR(p); | |
fe4f7940 | 1098 | fs_err(sdp, "can't create quotad thread: %d\n", error); |
a28dc123 BP |
1099 | goto fail; |
1100 | } | |
fe4f7940 | 1101 | get_task_struct(p); |
a28dc123 | 1102 | sdp->sd_quotad_process = p; |
fe4f7940 AG |
1103 | |
1104 | wake_up_process(sdp->sd_logd_process); | |
1105 | wake_up_process(sdp->sd_quotad_process); | |
a28dc123 BP |
1106 | return 0; |
1107 | ||
1108 | fail: | |
6309727e | 1109 | kthread_stop_put(sdp->sd_logd_process); |
a28dc123 BP |
1110 | sdp->sd_logd_process = NULL; |
1111 | return error; | |
1112 | } | |
1113 | ||
fe4f7940 AG |
1114 | void gfs2_destroy_threads(struct gfs2_sbd *sdp) |
1115 | { | |
1116 | if (sdp->sd_logd_process) { | |
6309727e | 1117 | kthread_stop_put(sdp->sd_logd_process); |
fe4f7940 AG |
1118 | sdp->sd_logd_process = NULL; |
1119 | } | |
1120 | if (sdp->sd_quotad_process) { | |
6309727e | 1121 | kthread_stop_put(sdp->sd_quotad_process); |
fe4f7940 AG |
1122 | sdp->sd_quotad_process = NULL; |
1123 | } | |
1124 | } | |
1125 | ||
b3b94faa | 1126 | /** |
1f52aa08 | 1127 | * gfs2_fill_super - Read in superblock |
b3b94faa | 1128 | * @sb: The VFS superblock |
c551f66c | 1129 | * @fc: Mount options and flags |
b3b94faa | 1130 | * |
1f52aa08 | 1131 | * Returns: -errno |
b3b94faa | 1132 | */ |
1f52aa08 | 1133 | static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc) |
b3b94faa | 1134 | { |
1f52aa08 AP |
1135 | struct gfs2_args *args = fc->fs_private; |
1136 | int silent = fc->sb_flags & SB_SILENT; | |
b3b94faa DT |
1137 | struct gfs2_sbd *sdp; |
1138 | struct gfs2_holder mount_gh; | |
1139 | int error; | |
1140 | ||
1141 | sdp = init_sbd(sb); | |
1142 | if (!sdp) { | |
d77d1b58 | 1143 | pr_warn("can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1144 | return -ENOMEM; |
1145 | } | |
f55073ff | 1146 | sdp->sd_args = *args; |
b3b94faa | 1147 | |
fe64d517 | 1148 | if (sdp->sd_args.ar_spectator) { |
1751e8a6 | 1149 | sb->s_flags |= SB_RDONLY; |
e8ca5cc5 | 1150 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
fe64d517 | 1151 | } |
6f04c1c7 | 1152 | if (sdp->sd_args.ar_posix_acl) |
1751e8a6 | 1153 | sb->s_flags |= SB_POSIXACL; |
f25934c5 CH |
1154 | if (sdp->sd_args.ar_nobarrier) |
1155 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1156 | |
1751e8a6 | 1157 | sb->s_flags |= SB_NOSEC; |
719ee344 SW |
1158 | sb->s_magic = GFS2_MAGIC; |
1159 | sb->s_op = &gfs2_super_ops; | |
41ced6dc | 1160 | sb->s_d_op = &gfs2_dops; |
719ee344 | 1161 | sb->s_export_op = &gfs2_export_ops; |
cc632e7f | 1162 | sb->s_qcop = &gfs2_quotactl_ops; |
de3b08d3 | 1163 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
cc632e7f | 1164 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
719ee344 SW |
1165 | sb->s_time_gran = 1; |
1166 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1167 | |
1168 | /* Set up the buffer cache and fill in some fake block size values | |
1169 | to allow us to read-in the on-disk superblock. */ | |
13587069 | 1170 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, 512); |
419c93e0 | 1171 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; |
13587069 | 1172 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - 9; |
47a9a527 | 1173 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
b3b94faa | 1174 | |
5e687eac | 1175 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1176 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1177 | if (sdp->sd_args.ar_statfs_quantum) { | |
1178 | sdp->sd_tune.gt_statfs_slow = 0; | |
1179 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
32e471ef | 1180 | } else { |
3d3c10f2 BM |
1181 | sdp->sd_tune.gt_statfs_slow = 1; |
1182 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1183 | } | |
48c2b613 | 1184 | |
b3b94faa | 1185 | error = init_names(sdp, silent); |
c2a04b02 JI |
1186 | if (error) |
1187 | goto fail_free; | |
b3b94faa | 1188 | |
561b7969 | 1189 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name); |
e0c2a9aa | 1190 | |
0247f4e9 AG |
1191 | sdp->sd_delete_wq = alloc_workqueue("gfs2-delete/%s", |
1192 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0, sdp->sd_fsname); | |
1193 | error = -ENOMEM; | |
1194 | if (!sdp->sd_delete_wq) | |
1195 | goto fail_free; | |
1196 | ||
b3b94faa DT |
1197 | error = gfs2_sys_fs_add(sdp); |
1198 | if (error) | |
0247f4e9 | 1199 | goto fail_delete_wq; |
0d515210 BP |
1200 | |
1201 | gfs2_create_debugfs_file(sdp); | |
b3b94faa DT |
1202 | |
1203 | error = gfs2_lm_mount(sdp, silent); | |
1204 | if (error) | |
0d515210 | 1205 | goto fail_debug; |
b3b94faa DT |
1206 | |
1207 | error = init_locking(sdp, &mount_gh, DO); | |
1208 | if (error) | |
1209 | goto fail_lm; | |
1210 | ||
9b8df98f | 1211 | error = init_sb(sdp, silent); |
b3b94faa DT |
1212 | if (error) |
1213 | goto fail_locking; | |
b3b94faa | 1214 | |
47b7ec1d AP |
1215 | /* Turn rgrplvb on by default if fs format is recent enough */ |
1216 | if (!sdp->sd_args.ar_got_rgrplvb && sdp->sd_sb.sb_fs_format > 1801) | |
1217 | sdp->sd_args.ar_rgrplvb = 1; | |
1218 | ||
ba6e9364 SW |
1219 | error = wait_on_journal(sdp); |
1220 | if (error) | |
1221 | goto fail_sb; | |
1222 | ||
feb47ca9 SW |
1223 | /* |
1224 | * If user space has failed to join the cluster or some similar | |
1225 | * failure has occurred, then the journal id will contain a | |
1226 | * negative (error) number. This will then be returned to the | |
1227 | * caller (of the mount syscall). We do this even for spectator | |
1228 | * mounts (which just write a jid of 0 to indicate "ok" even though | |
1229 | * the jid is unused in the spectator case) | |
1230 | */ | |
1231 | if (sdp->sd_lockstruct.ls_jid < 0) { | |
1232 | error = sdp->sd_lockstruct.ls_jid; | |
1233 | sdp->sd_lockstruct.ls_jid = 0; | |
1234 | goto fail_sb; | |
1235 | } | |
1236 | ||
e0c2a9aa | 1237 | if (sdp->sd_args.ar_spectator) |
561b7969 | 1238 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s", |
e0c2a9aa DT |
1239 | sdp->sd_table_name); |
1240 | else | |
561b7969 | 1241 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u", |
e0c2a9aa DT |
1242 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); |
1243 | ||
b3b94faa DT |
1244 | error = init_inodes(sdp, DO); |
1245 | if (error) | |
f42faf4f | 1246 | goto fail_sb; |
b3b94faa DT |
1247 | |
1248 | error = init_per_node(sdp, DO); | |
1249 | if (error) | |
1250 | goto fail_inodes; | |
1251 | ||
1252 | error = gfs2_statfs_init(sdp); | |
1253 | if (error) { | |
1254 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1255 | goto fail_per_node; | |
1256 | } | |
1257 | ||
a28dc123 BP |
1258 | if (!sb_rdonly(sb)) { |
1259 | error = init_threads(sdp); | |
0cdc6f44 | 1260 | if (error) |
a28dc123 | 1261 | goto fail_per_node; |
a28dc123 BP |
1262 | } |
1263 | ||
6c7410f4 | 1264 | error = gfs2_freeze_lock_shared(sdp); |
96b1454f BP |
1265 | if (error) |
1266 | goto fail_per_node; | |
b780cc61 | 1267 | |
96b1454f | 1268 | if (!sb_rdonly(sb)) |
b3b94faa | 1269 | error = gfs2_make_fs_rw(sdp); |
b3b94faa | 1270 | |
96b1454f | 1271 | if (error) { |
fcd63086 | 1272 | gfs2_freeze_unlock(sdp); |
fe4f7940 | 1273 | gfs2_destroy_threads(sdp); |
96b1454f BP |
1274 | fs_err(sdp, "can't make FS RW: %d\n", error); |
1275 | goto fail_per_node; | |
1276 | } | |
b3b94faa | 1277 | gfs2_glock_dq_uninit(&mount_gh); |
8633ecfa | 1278 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1279 | return 0; |
1280 | ||
a91ea69f | 1281 | fail_per_node: |
b3b94faa | 1282 | init_per_node(sdp, UNDO); |
a91ea69f | 1283 | fail_inodes: |
b3b94faa | 1284 | init_inodes(sdp, UNDO); |
a91ea69f | 1285 | fail_sb: |
9b8df98f SW |
1286 | if (sdp->sd_root_dir) |
1287 | dput(sdp->sd_root_dir); | |
1288 | if (sdp->sd_master_dir) | |
1289 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1290 | if (sb->s_root) |
1291 | dput(sb->s_root); | |
9b8df98f | 1292 | sb->s_root = NULL; |
a91ea69f | 1293 | fail_locking: |
b3b94faa | 1294 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1295 | fail_lm: |
0e48e055 | 1296 | complete_all(&sdp->sd_journal_ready); |
fefc03bf | 1297 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1298 | gfs2_lm_unmount(sdp); |
0d515210 | 1299 | fail_debug: |
5f882096 | 1300 | gfs2_delete_debugfs_file(sdp); |
0d515210 | 1301 | gfs2_sys_fs_del(sdp); |
0247f4e9 AG |
1302 | fail_delete_wq: |
1303 | destroy_workqueue(sdp->sd_delete_wq); | |
c2a04b02 JI |
1304 | fail_free: |
1305 | free_sbd(sdp); | |
5c676f6d | 1306 | sb->s_fs_info = NULL; |
b3b94faa DT |
1307 | return error; |
1308 | } | |
1309 | ||
1f52aa08 AP |
1310 | /** |
1311 | * gfs2_get_tree - Get the GFS2 superblock and root directory | |
1312 | * @fc: The filesystem context | |
1313 | * | |
1314 | * Returns: 0 or -errno on error | |
1315 | */ | |
1316 | static int gfs2_get_tree(struct fs_context *fc) | |
b3b94faa | 1317 | { |
1f52aa08 AP |
1318 | struct gfs2_args *args = fc->fs_private; |
1319 | struct gfs2_sbd *sdp; | |
1320 | int error; | |
1321 | ||
1322 | error = get_tree_bdev(fc, gfs2_fill_super); | |
1323 | if (error) | |
1324 | return error; | |
1325 | ||
1326 | sdp = fc->root->d_sb->s_fs_info; | |
1327 | dput(fc->root); | |
1328 | if (args->ar_meta) | |
1329 | fc->root = dget(sdp->sd_master_dir); | |
1330 | else | |
1331 | fc->root = dget(sdp->sd_root_dir); | |
f55073ff | 1332 | return 0; |
86384605 AD |
1333 | } |
1334 | ||
1f52aa08 | 1335 | static void gfs2_fc_free(struct fs_context *fc) |
f6d03139 | 1336 | { |
1f52aa08 AP |
1337 | struct gfs2_args *args = fc->fs_private; |
1338 | ||
1339 | kfree(args); | |
f6d03139 SW |
1340 | } |
1341 | ||
1f52aa08 AP |
1342 | enum gfs2_param { |
1343 | Opt_lockproto, | |
1344 | Opt_locktable, | |
1345 | Opt_hostdata, | |
1346 | Opt_spectator, | |
1347 | Opt_ignore_local_fs, | |
1348 | Opt_localflocks, | |
1349 | Opt_localcaching, | |
1350 | Opt_debug, | |
1351 | Opt_upgrade, | |
1352 | Opt_acl, | |
1353 | Opt_quota, | |
48ce73b1 | 1354 | Opt_quota_flag, |
1f52aa08 AP |
1355 | Opt_suiddir, |
1356 | Opt_data, | |
1357 | Opt_meta, | |
1358 | Opt_discard, | |
1359 | Opt_commit, | |
1360 | Opt_errors, | |
1361 | Opt_statfs_quantum, | |
1362 | Opt_statfs_percent, | |
1363 | Opt_quota_quantum, | |
1364 | Opt_barrier, | |
1365 | Opt_rgrplvb, | |
1366 | Opt_loccookie, | |
1367 | }; | |
f55073ff | 1368 | |
5eede625 | 1369 | static const struct constant_table gfs2_param_quota[] = { |
48ce73b1 AV |
1370 | {"off", GFS2_QUOTA_OFF}, |
1371 | {"account", GFS2_QUOTA_ACCOUNT}, | |
1372 | {"on", GFS2_QUOTA_ON}, | |
eef46ab7 | 1373 | {"quiet", GFS2_QUOTA_QUIET}, |
2710c957 | 1374 | {} |
1f52aa08 | 1375 | }; |
f55073ff | 1376 | |
1f52aa08 AP |
1377 | enum opt_data { |
1378 | Opt_data_writeback = GFS2_DATA_WRITEBACK, | |
1379 | Opt_data_ordered = GFS2_DATA_ORDERED, | |
1380 | }; | |
f55073ff | 1381 | |
5eede625 | 1382 | static const struct constant_table gfs2_param_data[] = { |
2710c957 AV |
1383 | {"writeback", Opt_data_writeback }, |
1384 | {"ordered", Opt_data_ordered }, | |
1385 | {} | |
1386 | }; | |
1387 | ||
1f52aa08 AP |
1388 | enum opt_errors { |
1389 | Opt_errors_withdraw = GFS2_ERRORS_WITHDRAW, | |
1390 | Opt_errors_panic = GFS2_ERRORS_PANIC, | |
1391 | }; | |
f55073ff | 1392 | |
5eede625 | 1393 | static const struct constant_table gfs2_param_errors[] = { |
2710c957 AV |
1394 | {"withdraw", Opt_errors_withdraw }, |
1395 | {"panic", Opt_errors_panic }, | |
1396 | {} | |
1397 | }; | |
1398 | ||
d7167b14 | 1399 | static const struct fs_parameter_spec gfs2_fs_parameters[] = { |
1f52aa08 AP |
1400 | fsparam_string ("lockproto", Opt_lockproto), |
1401 | fsparam_string ("locktable", Opt_locktable), | |
1402 | fsparam_string ("hostdata", Opt_hostdata), | |
1403 | fsparam_flag ("spectator", Opt_spectator), | |
1404 | fsparam_flag ("norecovery", Opt_spectator), | |
1405 | fsparam_flag ("ignore_local_fs", Opt_ignore_local_fs), | |
1406 | fsparam_flag ("localflocks", Opt_localflocks), | |
1407 | fsparam_flag ("localcaching", Opt_localcaching), | |
1408 | fsparam_flag_no("debug", Opt_debug), | |
1409 | fsparam_flag ("upgrade", Opt_upgrade), | |
1410 | fsparam_flag_no("acl", Opt_acl), | |
1411 | fsparam_flag_no("suiddir", Opt_suiddir), | |
2710c957 | 1412 | fsparam_enum ("data", Opt_data, gfs2_param_data), |
1f52aa08 AP |
1413 | fsparam_flag ("meta", Opt_meta), |
1414 | fsparam_flag_no("discard", Opt_discard), | |
1415 | fsparam_s32 ("commit", Opt_commit), | |
2710c957 | 1416 | fsparam_enum ("errors", Opt_errors, gfs2_param_errors), |
1f52aa08 AP |
1417 | fsparam_s32 ("statfs_quantum", Opt_statfs_quantum), |
1418 | fsparam_s32 ("statfs_percent", Opt_statfs_percent), | |
1419 | fsparam_s32 ("quota_quantum", Opt_quota_quantum), | |
1420 | fsparam_flag_no("barrier", Opt_barrier), | |
1421 | fsparam_flag_no("rgrplvb", Opt_rgrplvb), | |
1422 | fsparam_flag_no("loccookie", Opt_loccookie), | |
1423 | /* quota can be a flag or an enum so it gets special treatment */ | |
48ce73b1 AV |
1424 | fsparam_flag_no("quota", Opt_quota_flag), |
1425 | fsparam_enum("quota", Opt_quota, gfs2_param_quota), | |
1f52aa08 AP |
1426 | {} |
1427 | }; | |
f55073ff | 1428 | |
1f52aa08 AP |
1429 | /* Parse a single mount parameter */ |
1430 | static int gfs2_parse_param(struct fs_context *fc, struct fs_parameter *param) | |
1431 | { | |
1432 | struct gfs2_args *args = fc->fs_private; | |
1433 | struct fs_parse_result result; | |
1434 | int o; | |
1435 | ||
d7167b14 | 1436 | o = fs_parse(fc, gfs2_fs_parameters, param, &result); |
1f52aa08 AP |
1437 | if (o < 0) |
1438 | return o; | |
1439 | ||
1440 | switch (o) { | |
1441 | case Opt_lockproto: | |
204c0300 | 1442 | strscpy(args->ar_lockproto, param->string, GFS2_LOCKNAME_LEN); |
1f52aa08 AP |
1443 | break; |
1444 | case Opt_locktable: | |
204c0300 | 1445 | strscpy(args->ar_locktable, param->string, GFS2_LOCKNAME_LEN); |
1f52aa08 AP |
1446 | break; |
1447 | case Opt_hostdata: | |
204c0300 | 1448 | strscpy(args->ar_hostdata, param->string, GFS2_LOCKNAME_LEN); |
1f52aa08 AP |
1449 | break; |
1450 | case Opt_spectator: | |
1451 | args->ar_spectator = 1; | |
1452 | break; | |
1453 | case Opt_ignore_local_fs: | |
1454 | /* Retained for backwards compat only */ | |
1455 | break; | |
1456 | case Opt_localflocks: | |
1457 | args->ar_localflocks = 1; | |
1458 | break; | |
1459 | case Opt_localcaching: | |
1460 | /* Retained for backwards compat only */ | |
1461 | break; | |
1462 | case Opt_debug: | |
1463 | if (result.boolean && args->ar_errors == GFS2_ERRORS_PANIC) | |
77cb271e | 1464 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1465 | args->ar_debug = result.boolean; |
1466 | break; | |
1467 | case Opt_upgrade: | |
1468 | /* Retained for backwards compat only */ | |
1469 | break; | |
1470 | case Opt_acl: | |
1471 | args->ar_posix_acl = result.boolean; | |
1472 | break; | |
48ce73b1 AV |
1473 | case Opt_quota_flag: |
1474 | args->ar_quota = result.negated ? GFS2_QUOTA_OFF : GFS2_QUOTA_ON; | |
1475 | break; | |
1f52aa08 | 1476 | case Opt_quota: |
48ce73b1 | 1477 | args->ar_quota = result.int_32; |
1f52aa08 AP |
1478 | break; |
1479 | case Opt_suiddir: | |
1480 | args->ar_suiddir = result.boolean; | |
1481 | break; | |
1482 | case Opt_data: | |
1483 | /* The uint_32 result maps directly to GFS2_DATA_* */ | |
1484 | args->ar_data = result.uint_32; | |
1485 | break; | |
1486 | case Opt_meta: | |
1487 | args->ar_meta = 1; | |
1488 | break; | |
1489 | case Opt_discard: | |
1490 | args->ar_discard = result.boolean; | |
1491 | break; | |
1492 | case Opt_commit: | |
1493 | if (result.int_32 <= 0) | |
77cb271e | 1494 | return invalfc(fc, "commit mount option requires a positive numeric argument"); |
1f52aa08 AP |
1495 | args->ar_commit = result.int_32; |
1496 | break; | |
1497 | case Opt_statfs_quantum: | |
1498 | if (result.int_32 < 0) | |
77cb271e | 1499 | return invalfc(fc, "statfs_quantum mount option requires a non-negative numeric argument"); |
1f52aa08 AP |
1500 | args->ar_statfs_quantum = result.int_32; |
1501 | break; | |
1502 | case Opt_quota_quantum: | |
1503 | if (result.int_32 <= 0) | |
77cb271e | 1504 | return invalfc(fc, "quota_quantum mount option requires a positive numeric argument"); |
1f52aa08 AP |
1505 | args->ar_quota_quantum = result.int_32; |
1506 | break; | |
1507 | case Opt_statfs_percent: | |
1508 | if (result.int_32 < 0 || result.int_32 > 100) | |
77cb271e | 1509 | return invalfc(fc, "statfs_percent mount option requires a numeric argument between 0 and 100"); |
1f52aa08 AP |
1510 | args->ar_statfs_percent = result.int_32; |
1511 | break; | |
1512 | case Opt_errors: | |
1513 | if (args->ar_debug && result.uint_32 == GFS2_ERRORS_PANIC) | |
77cb271e | 1514 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1515 | args->ar_errors = result.uint_32; |
1516 | break; | |
1517 | case Opt_barrier: | |
1518 | args->ar_nobarrier = result.boolean; | |
1519 | break; | |
1520 | case Opt_rgrplvb: | |
1521 | args->ar_rgrplvb = result.boolean; | |
47b7ec1d | 1522 | args->ar_got_rgrplvb = 1; |
1f52aa08 AP |
1523 | break; |
1524 | case Opt_loccookie: | |
1525 | args->ar_loccookie = result.boolean; | |
1526 | break; | |
1527 | default: | |
77cb271e | 1528 | return invalfc(fc, "invalid mount option: %s", param->key); |
f55073ff | 1529 | } |
1f52aa08 AP |
1530 | return 0; |
1531 | } | |
f55073ff | 1532 | |
1f52aa08 AP |
1533 | static int gfs2_reconfigure(struct fs_context *fc) |
1534 | { | |
1535 | struct super_block *sb = fc->root->d_sb; | |
1536 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1537 | struct gfs2_args *oldargs = &sdp->sd_args; | |
1538 | struct gfs2_args *newargs = fc->fs_private; | |
1539 | struct gfs2_tune *gt = &sdp->sd_tune; | |
1540 | int error = 0; | |
1541 | ||
1542 | sync_filesystem(sb); | |
1543 | ||
1544 | spin_lock(>->gt_spin); | |
1545 | oldargs->ar_commit = gt->gt_logd_secs; | |
1546 | oldargs->ar_quota_quantum = gt->gt_quota_quantum; | |
1547 | if (gt->gt_statfs_slow) | |
1548 | oldargs->ar_statfs_quantum = 0; | |
1549 | else | |
1550 | oldargs->ar_statfs_quantum = gt->gt_statfs_quantum; | |
1551 | spin_unlock(>->gt_spin); | |
1552 | ||
1553 | if (strcmp(newargs->ar_lockproto, oldargs->ar_lockproto)) { | |
77cb271e | 1554 | errorfc(fc, "reconfiguration of locking protocol not allowed"); |
1f52aa08 AP |
1555 | return -EINVAL; |
1556 | } | |
1557 | if (strcmp(newargs->ar_locktable, oldargs->ar_locktable)) { | |
77cb271e | 1558 | errorfc(fc, "reconfiguration of lock table not allowed"); |
1f52aa08 AP |
1559 | return -EINVAL; |
1560 | } | |
1561 | if (strcmp(newargs->ar_hostdata, oldargs->ar_hostdata)) { | |
77cb271e | 1562 | errorfc(fc, "reconfiguration of host data not allowed"); |
1f52aa08 AP |
1563 | return -EINVAL; |
1564 | } | |
1565 | if (newargs->ar_spectator != oldargs->ar_spectator) { | |
77cb271e | 1566 | errorfc(fc, "reconfiguration of spectator mode not allowed"); |
1f52aa08 AP |
1567 | return -EINVAL; |
1568 | } | |
1569 | if (newargs->ar_localflocks != oldargs->ar_localflocks) { | |
77cb271e | 1570 | errorfc(fc, "reconfiguration of localflocks not allowed"); |
1f52aa08 AP |
1571 | return -EINVAL; |
1572 | } | |
1573 | if (newargs->ar_meta != oldargs->ar_meta) { | |
77cb271e | 1574 | errorfc(fc, "switching between gfs2 and gfs2meta not allowed"); |
1f52aa08 AP |
1575 | return -EINVAL; |
1576 | } | |
1577 | if (oldargs->ar_spectator) | |
1578 | fc->sb_flags |= SB_RDONLY; | |
1579 | ||
1580 | if ((sb->s_flags ^ fc->sb_flags) & SB_RDONLY) { | |
1581 | if (fc->sb_flags & SB_RDONLY) { | |
eb602521 | 1582 | gfs2_make_fs_ro(sdp); |
1f52aa08 AP |
1583 | } else { |
1584 | error = gfs2_make_fs_rw(sdp); | |
1585 | if (error) | |
77cb271e | 1586 | errorfc(fc, "unable to remount read-write"); |
1f52aa08 | 1587 | } |
f55073ff | 1588 | } |
1f52aa08 | 1589 | sdp->sd_args = *newargs; |
f55073ff | 1590 | |
1f52aa08 AP |
1591 | if (sdp->sd_args.ar_posix_acl) |
1592 | sb->s_flags |= SB_POSIXACL; | |
1593 | else | |
1594 | sb->s_flags &= ~SB_POSIXACL; | |
1595 | if (sdp->sd_args.ar_nobarrier) | |
1596 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
f55073ff | 1597 | else |
1f52aa08 AP |
1598 | clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
1599 | spin_lock(>->gt_spin); | |
1600 | gt->gt_logd_secs = newargs->ar_commit; | |
1601 | gt->gt_quota_quantum = newargs->ar_quota_quantum; | |
1602 | if (newargs->ar_statfs_quantum) { | |
1603 | gt->gt_statfs_slow = 0; | |
1604 | gt->gt_statfs_quantum = newargs->ar_statfs_quantum; | |
1605 | } | |
1606 | else { | |
1607 | gt->gt_statfs_slow = 1; | |
1608 | gt->gt_statfs_quantum = 30; | |
1609 | } | |
1610 | spin_unlock(>->gt_spin); | |
1611 | ||
1612 | gfs2_online_uevent(sdp); | |
1613 | return error; | |
1614 | } | |
1615 | ||
1616 | static const struct fs_context_operations gfs2_context_ops = { | |
1617 | .free = gfs2_fc_free, | |
1618 | .parse_param = gfs2_parse_param, | |
1619 | .get_tree = gfs2_get_tree, | |
1620 | .reconfigure = gfs2_reconfigure, | |
1621 | }; | |
1622 | ||
1623 | /* Set up the filesystem mount context */ | |
1624 | static int gfs2_init_fs_context(struct fs_context *fc) | |
1625 | { | |
1626 | struct gfs2_args *args; | |
1627 | ||
d5798141 | 1628 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
1f52aa08 AP |
1629 | if (args == NULL) |
1630 | return -ENOMEM; | |
1631 | ||
d5798141 AP |
1632 | if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { |
1633 | struct gfs2_sbd *sdp = fc->root->d_sb->s_fs_info; | |
1f52aa08 | 1634 | |
d5798141 AP |
1635 | *args = sdp->sd_args; |
1636 | } else { | |
1637 | memset(args, 0, sizeof(*args)); | |
1638 | args->ar_quota = GFS2_QUOTA_DEFAULT; | |
1639 | args->ar_data = GFS2_DATA_DEFAULT; | |
1640 | args->ar_commit = 30; | |
1641 | args->ar_statfs_quantum = 30; | |
1642 | args->ar_quota_quantum = 60; | |
1643 | args->ar_errors = GFS2_ERRORS_DEFAULT; | |
1644 | } | |
1f52aa08 AP |
1645 | fc->fs_private = args; |
1646 | fc->ops = &gfs2_context_ops; | |
1647 | return 0; | |
f55073ff SW |
1648 | } |
1649 | ||
1f52aa08 | 1650 | static int set_meta_super(struct super_block *s, struct fs_context *fc) |
f6d03139 SW |
1651 | { |
1652 | return -EINVAL; | |
1653 | } | |
1654 | ||
1f52aa08 AP |
1655 | static int test_meta_super(struct super_block *s, struct fs_context *fc) |
1656 | { | |
1657 | return (fc->sget_key == s->s_bdev); | |
1658 | } | |
1659 | ||
1660 | static int gfs2_meta_get_tree(struct fs_context *fc) | |
86384605 | 1661 | { |
f6d03139 | 1662 | struct super_block *s; |
003dec89 | 1663 | struct gfs2_sbd *sdp; |
e24977d4 | 1664 | struct path path; |
86384605 | 1665 | int error; |
907b9bce | 1666 | |
1f52aa08 AP |
1667 | if (!fc->source || !*fc->source) |
1668 | return -EINVAL; | |
3df629d8 | 1669 | |
1f52aa08 | 1670 | error = kern_path(fc->source, LOOKUP_FOLLOW, &path); |
86384605 | 1671 | if (error) { |
d77d1b58 | 1672 | pr_warn("path_lookup on %s returned error %d\n", |
1f52aa08 AP |
1673 | fc->source, error); |
1674 | return error; | |
86384605 | 1675 | } |
1f52aa08 AP |
1676 | fc->fs_type = &gfs2_fs_type; |
1677 | fc->sget_key = path.dentry->d_sb->s_bdev; | |
1678 | s = sget_fc(fc, test_meta_super, set_meta_super); | |
e24977d4 | 1679 | path_put(&path); |
f6d03139 | 1680 | if (IS_ERR(s)) { |
d77d1b58 | 1681 | pr_warn("gfs2 mount does not exist\n"); |
1f52aa08 | 1682 | return PTR_ERR(s); |
86384605 | 1683 | } |
1f52aa08 | 1684 | if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) { |
f55073ff | 1685 | deactivate_locked_super(s); |
1f52aa08 | 1686 | return -EBUSY; |
f55073ff | 1687 | } |
f6d03139 | 1688 | sdp = s->s_fs_info; |
1f52aa08 AP |
1689 | fc->root = dget(sdp->sd_master_dir); |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | static const struct fs_context_operations gfs2_meta_context_ops = { | |
30aecae8 | 1694 | .free = gfs2_fc_free, |
1f52aa08 AP |
1695 | .get_tree = gfs2_meta_get_tree, |
1696 | }; | |
1697 | ||
1698 | static int gfs2_meta_init_fs_context(struct fs_context *fc) | |
1699 | { | |
1700 | int ret = gfs2_init_fs_context(fc); | |
1701 | ||
1702 | if (ret) | |
1703 | return ret; | |
1704 | ||
1705 | fc->ops = &gfs2_meta_context_ops; | |
1706 | return 0; | |
b3b94faa DT |
1707 | } |
1708 | ||
b88beb9a AG |
1709 | /** |
1710 | * gfs2_evict_inodes - evict inodes cooperatively | |
1711 | * @sb: the superblock | |
1712 | * | |
1713 | * When evicting an inode with a zero link count, we are trying to upgrade the | |
1714 | * inode's iopen glock from SH to EX mode in order to determine if we can | |
1715 | * delete the inode. The other nodes are supposed to evict the inode from | |
1716 | * their caches if they can, and to poke the inode's inode glock if they cannot | |
1717 | * do so. Either behavior allows gfs2_upgrade_iopen_glock() to proceed | |
1718 | * quickly, but if the other nodes are not cooperating, the lock upgrading | |
1719 | * attempt will time out. Since inodes are evicted sequentially, this can add | |
1720 | * up quickly. | |
1721 | * | |
1722 | * Function evict_inodes() tries to keep the s_inode_list_lock list locked over | |
1723 | * a long time, which prevents other inodes from being evicted concurrently. | |
1724 | * This precludes the cooperative behavior we are looking for. This special | |
1725 | * version of evict_inodes() avoids that. | |
1726 | * | |
1727 | * Modeled after drop_pagecache_sb(). | |
1728 | */ | |
1729 | static void gfs2_evict_inodes(struct super_block *sb) | |
1730 | { | |
1731 | struct inode *inode, *toput_inode = NULL; | |
1732 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1733 | ||
1734 | set_bit(SDF_EVICTING, &sdp->sd_flags); | |
1735 | ||
1736 | spin_lock(&sb->s_inode_list_lock); | |
1737 | list_for_each_entry(inode, &sb->s_inodes, i_sb_list) { | |
1738 | spin_lock(&inode->i_lock); | |
1739 | if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) && | |
1740 | !need_resched()) { | |
1741 | spin_unlock(&inode->i_lock); | |
1742 | continue; | |
1743 | } | |
1744 | atomic_inc(&inode->i_count); | |
1745 | spin_unlock(&inode->i_lock); | |
1746 | spin_unlock(&sb->s_inode_list_lock); | |
1747 | ||
1748 | iput(toput_inode); | |
1749 | toput_inode = inode; | |
1750 | ||
1751 | cond_resched(); | |
1752 | spin_lock(&sb->s_inode_list_lock); | |
1753 | } | |
1754 | spin_unlock(&sb->s_inode_list_lock); | |
1755 | iput(toput_inode); | |
1756 | } | |
1757 | ||
419c93e0 | 1758 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1759 | { |
1760 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1761 | |
1762 | if (sdp == NULL) { | |
1763 | kill_block_super(sb); | |
1764 | return; | |
3af165ac | 1765 | } |
88a19ad0 | 1766 | |
805c0907 | 1767 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SYNC | GFS2_LFC_KILL_SB); |
88a19ad0 SW |
1768 | dput(sdp->sd_root_dir); |
1769 | dput(sdp->sd_master_dir); | |
1770 | sdp->sd_root_dir = NULL; | |
1771 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1772 | shrink_dcache_sb(sb); |
6b388abc | 1773 | |
b88beb9a AG |
1774 | gfs2_evict_inodes(sb); |
1775 | ||
6b388abc AG |
1776 | /* |
1777 | * Flush and then drain the delete workqueue here (via | |
1778 | * destroy_workqueue()) to ensure that any delete work that | |
e7beb8b6 | 1779 | * may be running will also see the SDF_KILL flag. |
6b388abc | 1780 | */ |
e7beb8b6 | 1781 | set_bit(SDF_KILL, &sdp->sd_flags); |
6b388abc AG |
1782 | gfs2_flush_delete_work(sdp); |
1783 | destroy_workqueue(sdp->sd_delete_wq); | |
1784 | ||
0d515210 | 1785 | kill_block_super(sb); |
86384605 AD |
1786 | } |
1787 | ||
b3b94faa DT |
1788 | struct file_system_type gfs2_fs_type = { |
1789 | .name = "gfs2", | |
1790 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1791 | .init_fs_context = gfs2_init_fs_context, |
d7167b14 | 1792 | .parameters = gfs2_fs_parameters, |
419c93e0 SW |
1793 | .kill_sb = gfs2_kill_sb, |
1794 | .owner = THIS_MODULE, | |
1795 | }; | |
7f78e035 | 1796 | MODULE_ALIAS_FS("gfs2"); |
419c93e0 SW |
1797 | |
1798 | struct file_system_type gfs2meta_fs_type = { | |
1799 | .name = "gfs2meta", | |
1800 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1801 | .init_fs_context = gfs2_meta_init_fs_context, |
b3b94faa DT |
1802 | .owner = THIS_MODULE, |
1803 | }; | |
7f78e035 | 1804 | MODULE_ALIAS_FS("gfs2meta"); |