Commit | Line | Data |
---|---|---|
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 | ||
e402746a | 90 | init_waitqueue_head(&sdp->sd_glock_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); | |
120 | mapping->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 BM |
138 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); |
139 | mutex_init(&sdp->sd_freeze_mutex); | |
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 | ||
4246a0b6 | 188 | static void end_bio_io_page(struct bio *bio) |
9b8df98f SW |
189 | { |
190 | struct page *page = bio->bi_private; | |
191 | ||
4e4cbee9 | 192 | if (!bio->bi_status) |
9b8df98f SW |
193 | SetPageUptodate(page); |
194 | else | |
4e4cbee9 | 195 | pr_warn("error %d reading superblock\n", bio->bi_status); |
9b8df98f SW |
196 | unlock_page(page); |
197 | } | |
198 | ||
32e471ef | 199 | static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf) |
9b8df98f | 200 | { |
32e471ef SW |
201 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
202 | struct super_block *s = sdp->sd_vfs; | |
9b8df98f SW |
203 | const struct gfs2_sb *str = buf; |
204 | ||
205 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
206 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
9b8df98f SW |
207 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); |
208 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
209 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
210 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
211 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
212 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
213 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
214 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
215 | ||
216 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
217 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
85787090 | 218 | memcpy(&s->s_uuid, str->sb_uuid, 16); |
9b8df98f SW |
219 | } |
220 | ||
221 | /** | |
222 | * gfs2_read_super - Read the gfs2 super block from disk | |
223 | * @sdp: The GFS2 super block | |
224 | * @sector: The location of the super block | |
c551f66c | 225 | * @silent: Don't print a message if the check fails |
9b8df98f SW |
226 | * |
227 | * This uses the bio functions to read the super block from disk | |
228 | * because we want to be 100% sure that we never read cached data. | |
229 | * A super block is read twice only during each GFS2 mount and is | |
230 | * never written to by the filesystem. The first time its read no | |
231 | * locks are held, and the only details which are looked at are those | |
232 | * relating to the locking protocol. Once locking is up and working, | |
233 | * the sb is read again under the lock to establish the location of | |
234 | * the master directory (contains pointers to journals etc) and the | |
235 | * root directory. | |
236 | * | |
237 | * Returns: 0 on success or error | |
238 | */ | |
239 | ||
32e471ef | 240 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) |
9b8df98f SW |
241 | { |
242 | struct super_block *sb = sdp->sd_vfs; | |
243 | struct gfs2_sb *p; | |
244 | struct page *page; | |
245 | struct bio *bio; | |
246 | ||
247 | page = alloc_page(GFP_NOFS); | |
248 | if (unlikely(!page)) | |
ac3beb6a | 249 | return -ENOMEM; |
9b8df98f SW |
250 | |
251 | ClearPageUptodate(page); | |
252 | ClearPageDirty(page); | |
253 | lock_page(page); | |
254 | ||
07888c66 | 255 | bio = bio_alloc(sb->s_bdev, 1, REQ_OP_READ | REQ_META, GFP_NOFS); |
4f024f37 | 256 | bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); |
9b8df98f SW |
257 | bio_add_page(bio, page, PAGE_SIZE, 0); |
258 | ||
259 | bio->bi_end_io = end_bio_io_page; | |
260 | bio->bi_private = page; | |
4e49ea4a | 261 | submit_bio(bio); |
9b8df98f SW |
262 | wait_on_page_locked(page); |
263 | bio_put(bio); | |
264 | if (!PageUptodate(page)) { | |
265 | __free_page(page); | |
266 | return -EIO; | |
267 | } | |
268 | p = kmap(page); | |
32e471ef | 269 | gfs2_sb_in(sdp, p); |
9b8df98f SW |
270 | kunmap(page); |
271 | __free_page(page); | |
32e471ef | 272 | return gfs2_check_sb(sdp, silent); |
9b8df98f | 273 | } |
6bac243f | 274 | |
9b8df98f SW |
275 | /** |
276 | * gfs2_read_sb - Read super block | |
277 | * @sdp: The GFS2 superblock | |
9b8df98f SW |
278 | * @silent: Don't print message if mount fails |
279 | * | |
280 | */ | |
281 | ||
6bac243f | 282 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f SW |
283 | { |
284 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
285 | u32 tmp_blocks; | |
286 | unsigned int x; | |
287 | int error; | |
288 | ||
32e471ef | 289 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
9b8df98f SW |
290 | if (error) { |
291 | if (!silent) | |
292 | fs_err(sdp, "can't read superblock\n"); | |
293 | return error; | |
294 | } | |
295 | ||
9b8df98f SW |
296 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
297 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 298 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
9b8df98f SW |
299 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
300 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
301 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
302 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
2e9eeaa1 BP |
303 | sdp->sd_ldptrs = (sdp->sd_sb.sb_bsize - |
304 | sizeof(struct gfs2_log_descriptor)) / sizeof(u64); | |
9b8df98f SW |
305 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
306 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
307 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
308 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
309 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
310 | sizeof(struct gfs2_meta_header)) / | |
311 | sizeof(struct gfs2_quota_change); | |
a68a0a35 BP |
312 | sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize - |
313 | sizeof(struct gfs2_meta_header)) | |
314 | * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */ | |
9b8df98f | 315 | |
2129b428 AG |
316 | /* |
317 | * We always keep at least one block reserved for revokes in | |
318 | * transactions. This greatly simplifies allocating additional | |
319 | * revoke blocks. | |
320 | */ | |
321 | atomic_set(&sdp->sd_log_revokes_available, sdp->sd_ldptrs); | |
322 | ||
9b8df98f SW |
323 | /* Compute maximum reservation required to add a entry to a directory */ |
324 | ||
47a9a527 | 325 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * BIT(GFS2_DIR_MAX_DEPTH), |
9b8df98f SW |
326 | sdp->sd_jbsize); |
327 | ||
328 | ind_blocks = 0; | |
329 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
330 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
331 | ind_blocks += tmp_blocks; | |
332 | } | |
333 | ||
334 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
335 | ||
336 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
337 | ||
338 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
339 | sizeof(struct gfs2_dinode); | |
340 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
341 | for (x = 2;; x++) { | |
342 | u64 space, d; | |
343 | u32 m; | |
344 | ||
345 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
346 | d = space; | |
347 | m = do_div(d, sdp->sd_inptrs); | |
348 | ||
349 | if (d != sdp->sd_heightsize[x - 1] || m) | |
350 | break; | |
351 | sdp->sd_heightsize[x] = space; | |
352 | } | |
353 | sdp->sd_max_height = x; | |
354 | sdp->sd_heightsize[x] = ~0; | |
355 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
356 | ||
471f3db2 BM |
357 | sdp->sd_max_dents_per_leaf = (sdp->sd_sb.sb_bsize - |
358 | sizeof(struct gfs2_leaf)) / | |
359 | GFS2_MIN_DIRENT_SIZE; | |
9b8df98f SW |
360 | return 0; |
361 | } | |
362 | ||
b3b94faa DT |
363 | static int init_names(struct gfs2_sbd *sdp, int silent) |
364 | { | |
b3b94faa DT |
365 | char *proto, *table; |
366 | int error = 0; | |
367 | ||
368 | proto = sdp->sd_args.ar_lockproto; | |
369 | table = sdp->sd_args.ar_locktable; | |
370 | ||
371 | /* Try to autodetect */ | |
372 | ||
373 | if (!proto[0] || !table[0]) { | |
32e471ef | 374 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
bb8d8a6f SW |
375 | if (error) |
376 | return error; | |
3cf1e7be | 377 | |
b3b94faa | 378 | if (!proto[0]) |
3cf1e7be | 379 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 380 | if (!table[0]) |
3cf1e7be | 381 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
382 | } |
383 | ||
384 | if (!table[0]) | |
385 | table = sdp->sd_vfs->s_id; | |
386 | ||
204c0300 AG |
387 | BUILD_BUG_ON(GFS2_LOCKNAME_LEN > GFS2_FSNAME_LEN); |
388 | ||
389 | strscpy(sdp->sd_proto_name, proto, GFS2_LOCKNAME_LEN); | |
390 | strscpy(sdp->sd_table_name, table, GFS2_LOCKNAME_LEN); | |
b3b94faa | 391 | |
5d35e31f DC |
392 | table = sdp->sd_table_name; |
393 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
394 | *table = '_'; |
395 | ||
b3b94faa DT |
396 | return error; |
397 | } | |
398 | ||
399 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
400 | int undo) | |
401 | { | |
b3b94faa DT |
402 | int error = 0; |
403 | ||
404 | if (undo) | |
405 | goto fail_trans; | |
406 | ||
b3b94faa DT |
407 | error = gfs2_glock_nq_num(sdp, |
408 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
ebdc416c AG |
409 | LM_ST_EXCLUSIVE, |
410 | LM_FLAG_NOEXP | GL_NOCACHE | GL_NOPID, | |
b3b94faa DT |
411 | mount_gh); |
412 | if (error) { | |
413 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
414 | goto fail; | |
415 | } | |
416 | ||
417 | error = gfs2_glock_nq_num(sdp, | |
418 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
419 | LM_ST_SHARED, | |
ebdc416c | 420 | LM_FLAG_NOEXP | GL_EXACT | GL_NOPID, |
b3b94faa DT |
421 | &sdp->sd_live_gh); |
422 | if (error) { | |
423 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
424 | goto fail_mount; | |
425 | } | |
426 | ||
427 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
428 | CREATE, &sdp->sd_rename_gl); | |
429 | if (error) { | |
430 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
431 | goto fail_live; | |
432 | } | |
433 | ||
24972557 BM |
434 | error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops, |
435 | CREATE, &sdp->sd_freeze_gl); | |
b3b94faa DT |
436 | if (error) { |
437 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
438 | goto fail_rename; | |
439 | } | |
b3b94faa DT |
440 | |
441 | return 0; | |
442 | ||
feaa7bba | 443 | fail_trans: |
24972557 | 444 | gfs2_glock_put(sdp->sd_freeze_gl); |
feaa7bba | 445 | fail_rename: |
b3b94faa | 446 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 447 | fail_live: |
b3b94faa | 448 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 449 | fail_mount: |
b3b94faa | 450 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 451 | fail: |
b3b94faa DT |
452 | return error; |
453 | } | |
454 | ||
9b8df98f SW |
455 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
456 | u64 no_addr, const char *name) | |
f42faf4f | 457 | { |
9b8df98f SW |
458 | struct gfs2_sbd *sdp = sb->s_fs_info; |
459 | struct dentry *dentry; | |
460 | struct inode *inode; | |
461 | ||
3ce37b2c AG |
462 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, |
463 | GFS2_BLKST_FREE /* ignore */); | |
9b8df98f SW |
464 | if (IS_ERR(inode)) { |
465 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
466 | return PTR_ERR(inode); | |
467 | } | |
48fde701 | 468 | dentry = d_make_root(inode); |
9b8df98f SW |
469 | if (!dentry) { |
470 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
9b8df98f SW |
471 | return -ENOMEM; |
472 | } | |
9b8df98f SW |
473 | *dptr = dentry; |
474 | return 0; | |
f42faf4f SW |
475 | } |
476 | ||
9b8df98f | 477 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
478 | { |
479 | struct super_block *sb = sdp->sd_vfs; | |
480 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 481 | u64 no_addr; |
9b8df98f | 482 | int ret; |
b3b94faa | 483 | |
9b8df98f SW |
484 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
485 | LM_ST_SHARED, 0, &sb_gh); | |
486 | if (ret) { | |
487 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
488 | return ret; | |
b3b94faa | 489 | } |
907b9bce | 490 | |
6bac243f | 491 | ret = gfs2_read_sb(sdp, silent); |
9b8df98f SW |
492 | if (ret) { |
493 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
494 | goto out; |
495 | } | |
496 | ||
866eef48 AG |
497 | switch(sdp->sd_sb.sb_fs_format) { |
498 | case GFS2_FS_FORMAT_MAX: | |
499 | sb->s_xattr = gfs2_xattr_handlers_max; | |
500 | break; | |
501 | ||
502 | case GFS2_FS_FORMAT_MIN: | |
503 | sb->s_xattr = gfs2_xattr_handlers_min; | |
504 | break; | |
505 | ||
506 | default: | |
507 | BUG(); | |
508 | } | |
509 | ||
b3b94faa | 510 | /* Set up the buffer cache and SB for real */ |
e1defc4f | 511 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
9b8df98f | 512 | ret = -EINVAL; |
b3b94faa DT |
513 | fs_err(sdp, "FS block size (%u) is too small for device " |
514 | "block size (%u)\n", | |
e1defc4f | 515 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
b3b94faa DT |
516 | goto out; |
517 | } | |
518 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 519 | ret = -EINVAL; |
b3b94faa DT |
520 | fs_err(sdp, "FS block size (%u) is too big for machine " |
521 | "page size (%u)\n", | |
522 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
523 | goto out; | |
524 | } | |
b3b94faa DT |
525 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
526 | ||
f42faf4f | 527 | /* Get the root inode */ |
dbb7cae2 | 528 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
529 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
530 | if (ret) | |
f42faf4f | 531 | goto out; |
b3b94faa | 532 | |
9b8df98f SW |
533 | /* Get the master inode */ |
534 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
535 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
536 | if (ret) { | |
537 | dput(sdp->sd_root_dir); | |
538 | goto out; | |
539 | } | |
540 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 541 | out: |
b3b94faa | 542 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 543 | return ret; |
b3b94faa DT |
544 | } |
545 | ||
f057f6cd | 546 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
da755fdb | 547 | { |
f057f6cd SW |
548 | char *message = "FIRSTMOUNT=Done"; |
549 | char *envp[] = { message, NULL }; | |
e0c2a9aa DT |
550 | |
551 | fs_info(sdp, "first mount done, others may mount\n"); | |
552 | ||
553 | if (sdp->sd_lockstruct.ls_ops->lm_first_done) | |
554 | sdp->sd_lockstruct.ls_ops->lm_first_done(sdp); | |
555 | ||
f057f6cd | 556 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
da755fdb SW |
557 | } |
558 | ||
b5289681 SW |
559 | /** |
560 | * gfs2_jindex_hold - Grab a lock on the jindex | |
561 | * @sdp: The GFS2 superblock | |
562 | * @ji_gh: the holder for the jindex glock | |
563 | * | |
564 | * Returns: errno | |
565 | */ | |
566 | ||
567 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) | |
568 | { | |
569 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); | |
570 | struct qstr name; | |
571 | char buf[20]; | |
572 | struct gfs2_jdesc *jd; | |
573 | int error; | |
574 | ||
575 | name.name = buf; | |
576 | ||
577 | mutex_lock(&sdp->sd_jindex_mutex); | |
578 | ||
579 | for (;;) { | |
a72d2401 BP |
580 | struct gfs2_inode *jip; |
581 | ||
b5289681 SW |
582 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
583 | if (error) | |
584 | break; | |
585 | ||
586 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
587 | name.hash = gfs2_disk_hash(name.name, name.len); | |
588 | ||
589 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
590 | if (error == -ENOENT) { | |
591 | error = 0; | |
592 | break; | |
593 | } | |
594 | ||
595 | gfs2_glock_dq_uninit(ji_gh); | |
596 | ||
597 | if (error) | |
598 | break; | |
599 | ||
600 | error = -ENOMEM; | |
601 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
602 | if (!jd) | |
603 | break; | |
604 | ||
605 | INIT_LIST_HEAD(&jd->extent_list); | |
a17d758b BP |
606 | INIT_LIST_HEAD(&jd->jd_revoke_list); |
607 | ||
6ecd7c2d | 608 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 | 609 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
15a798f7 | 610 | if (IS_ERR_OR_NULL(jd->jd_inode)) { |
b5289681 SW |
611 | if (!jd->jd_inode) |
612 | error = -ENOENT; | |
613 | else | |
614 | error = PTR_ERR(jd->jd_inode); | |
615 | kfree(jd); | |
616 | break; | |
617 | } | |
618 | ||
1b8550b5 | 619 | d_mark_dontcache(jd->jd_inode); |
b5289681 SW |
620 | spin_lock(&sdp->sd_jindex_spin); |
621 | jd->jd_jid = sdp->sd_journals++; | |
a72d2401 BP |
622 | jip = GFS2_I(jd->jd_inode); |
623 | jd->jd_no_addr = jip->i_no_addr; | |
b5289681 SW |
624 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
625 | spin_unlock(&sdp->sd_jindex_spin); | |
626 | } | |
627 | ||
628 | mutex_unlock(&sdp->sd_jindex_mutex); | |
629 | ||
630 | return error; | |
631 | } | |
632 | ||
97fd734b AD |
633 | /** |
634 | * init_statfs - look up and initialize master and local (per node) statfs inodes | |
635 | * @sdp: The GFS2 superblock | |
636 | * | |
637 | * This should be called after the jindex is initialized in init_journal() and | |
638 | * before gfs2_journal_recovery() is called because we need to be able to write | |
639 | * to these inodes during recovery. | |
640 | * | |
641 | * Returns: errno | |
642 | */ | |
643 | static int init_statfs(struct gfs2_sbd *sdp) | |
644 | { | |
645 | int error = 0; | |
646 | struct inode *master = d_inode(sdp->sd_master_dir); | |
647 | struct inode *pn = NULL; | |
648 | char buf[30]; | |
649 | struct gfs2_jdesc *jd; | |
650 | struct gfs2_inode *ip; | |
651 | ||
652 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); | |
653 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
654 | error = PTR_ERR(sdp->sd_statfs_inode); | |
655 | fs_err(sdp, "can't read in statfs inode: %d\n", error); | |
7e5b9266 | 656 | goto out; |
97fd734b | 657 | } |
7e5b9266 BP |
658 | if (sdp->sd_args.ar_spectator) |
659 | goto out; | |
97fd734b AD |
660 | |
661 | pn = gfs2_lookup_simple(master, "per_node"); | |
662 | if (IS_ERR(pn)) { | |
663 | error = PTR_ERR(pn); | |
664 | fs_err(sdp, "can't find per_node directory: %d\n", error); | |
665 | goto put_statfs; | |
666 | } | |
667 | ||
668 | /* For each jid, lookup the corresponding local statfs inode in the | |
669 | * per_node metafs directory and save it in the sdp->sd_sc_inodes_list. */ | |
670 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
671 | struct local_statfs_inode *lsi = | |
672 | kmalloc(sizeof(struct local_statfs_inode), GFP_NOFS); | |
673 | if (!lsi) { | |
674 | error = -ENOMEM; | |
675 | goto free_local; | |
676 | } | |
677 | sprintf(buf, "statfs_change%u", jd->jd_jid); | |
678 | lsi->si_sc_inode = gfs2_lookup_simple(pn, buf); | |
679 | if (IS_ERR(lsi->si_sc_inode)) { | |
680 | error = PTR_ERR(lsi->si_sc_inode); | |
681 | fs_err(sdp, "can't find local \"sc\" file#%u: %d\n", | |
682 | jd->jd_jid, error); | |
a6579cbf | 683 | kfree(lsi); |
97fd734b AD |
684 | goto free_local; |
685 | } | |
686 | lsi->si_jid = jd->jd_jid; | |
687 | if (jd->jd_jid == sdp->sd_jdesc->jd_jid) | |
688 | sdp->sd_sc_inode = lsi->si_sc_inode; | |
689 | ||
690 | list_add_tail(&lsi->si_list, &sdp->sd_sc_inodes_list); | |
691 | } | |
692 | ||
693 | iput(pn); | |
5d49d350 | 694 | pn = NULL; |
97fd734b | 695 | ip = GFS2_I(sdp->sd_sc_inode); |
ebdc416c | 696 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_NOPID, |
97fd734b AD |
697 | &sdp->sd_sc_gh); |
698 | if (error) { | |
699 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
700 | goto free_local; | |
701 | } | |
70c11ba8 BP |
702 | /* read in the local statfs buffer - other nodes don't change it. */ |
703 | error = gfs2_meta_inode_buffer(ip, &sdp->sd_sc_bh); | |
704 | if (error) { | |
705 | fs_err(sdp, "Cannot read in local statfs: %d\n", error); | |
706 | goto unlock_sd_gh; | |
707 | } | |
97fd734b AD |
708 | return 0; |
709 | ||
70c11ba8 BP |
710 | unlock_sd_gh: |
711 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
97fd734b AD |
712 | free_local: |
713 | free_local_statfs_inodes(sdp); | |
714 | iput(pn); | |
715 | put_statfs: | |
716 | iput(sdp->sd_statfs_inode); | |
7e5b9266 | 717 | out: |
97fd734b AD |
718 | return error; |
719 | } | |
720 | ||
721 | /* Uninitialize and free up memory used by the list of statfs inodes */ | |
722 | static void uninit_statfs(struct gfs2_sbd *sdp) | |
723 | { | |
7e5b9266 | 724 | if (!sdp->sd_args.ar_spectator) { |
70c11ba8 | 725 | brelse(sdp->sd_sc_bh); |
7e5b9266 BP |
726 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
727 | free_local_statfs_inodes(sdp); | |
728 | } | |
97fd734b AD |
729 | iput(sdp->sd_statfs_inode); |
730 | } | |
731 | ||
b3b94faa DT |
732 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
733 | { | |
2b0143b5 | 734 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa | 735 | struct gfs2_holder ji_gh; |
5c676f6d | 736 | struct gfs2_inode *ip; |
b3b94faa DT |
737 | int error = 0; |
738 | ||
130cf526 BP |
739 | gfs2_holder_mark_uninitialized(&ji_gh); |
740 | if (undo) | |
c4af59bd | 741 | goto fail_statfs; |
b3b94faa | 742 | |
9b8df98f | 743 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 744 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 745 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 746 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 747 | } |
b3b94faa DT |
748 | |
749 | /* Load in the journal index special file */ | |
750 | ||
751 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
752 | if (error) { | |
753 | fs_err(sdp, "can't read journal index: %d\n", error); | |
754 | goto fail; | |
755 | } | |
756 | ||
0e5a9fb0 | 757 | error = -EUSERS; |
b3b94faa DT |
758 | if (!gfs2_jindex_size(sdp)) { |
759 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 760 | goto fail_jindex; |
b3b94faa DT |
761 | } |
762 | ||
f07b3520 | 763 | atomic_set(&sdp->sd_log_blks_needed, 0); |
b3b94faa DT |
764 | if (sdp->sd_args.ar_spectator) { |
765 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 766 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
767 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
768 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
769 | } else { |
770 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
771 | fs_err(sdp, "can't mount journal #%u\n", | |
772 | sdp->sd_lockstruct.ls_jid); | |
773 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
774 | gfs2_jindex_size(sdp), | |
775 | gfs2_jindex_size(sdp) - 1); | |
776 | goto fail_jindex; | |
777 | } | |
778 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
779 | ||
feaa7bba | 780 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa | 781 | &gfs2_journal_glops, |
601ef0d5 | 782 | LM_ST_EXCLUSIVE, |
ebdc416c | 783 | LM_FLAG_NOEXP | GL_NOCACHE | GL_NOPID, |
b3b94faa DT |
784 | &sdp->sd_journal_gh); |
785 | if (error) { | |
786 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
787 | goto fail_jindex; | |
788 | } | |
789 | ||
feaa7bba | 790 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
601ef0d5 | 791 | sdp->sd_jinode_gl = ip->i_gl; |
feaa7bba | 792 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, |
ebdc416c AG |
793 | LM_FLAG_NOEXP | GL_EXACT | |
794 | GL_NOCACHE | GL_NOPID, | |
b3b94faa DT |
795 | &sdp->sd_jinode_gh); |
796 | if (error) { | |
797 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
798 | error); | |
799 | goto fail_journal_gh; | |
800 | } | |
801 | ||
802 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
803 | if (error) { | |
804 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
805 | sdp->sd_jdesc->jd_jid, error); | |
806 | goto fail_jinode_gh; | |
807 | } | |
fd041f0b | 808 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
809 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
810 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
811 | |
812 | /* Map the extents for this journal's blocks */ | |
b50f227b | 813 | gfs2_map_journal_extents(sdp, sdp->sd_jdesc); |
b3b94faa | 814 | } |
63997775 | 815 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa | 816 | |
97fd734b AD |
817 | /* Lookup statfs inodes here so journal recovery can use them. */ |
818 | error = init_statfs(sdp); | |
819 | if (error) | |
820 | goto fail_jinode_gh; | |
821 | ||
b3b94faa DT |
822 | if (sdp->sd_lockstruct.ls_first) { |
823 | unsigned int x; | |
824 | for (x = 0; x < sdp->sd_journals; x++) { | |
1d12d175 BP |
825 | struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); |
826 | ||
827 | if (sdp->sd_args.ar_spectator) { | |
7d9f9249 | 828 | error = check_journal_clean(sdp, jd, true); |
1d12d175 | 829 | if (error) |
97fd734b | 830 | goto fail_statfs; |
1d12d175 BP |
831 | continue; |
832 | } | |
833 | error = gfs2_recover_journal(jd, true); | |
b3b94faa DT |
834 | if (error) { |
835 | fs_err(sdp, "error recovering journal %u: %d\n", | |
836 | x, error); | |
97fd734b | 837 | goto fail_statfs; |
b3b94faa DT |
838 | } |
839 | } | |
840 | ||
f057f6cd | 841 | gfs2_others_may_mount(sdp); |
b3b94faa | 842 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 843 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
844 | if (error) { |
845 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
97fd734b | 846 | goto fail_statfs; |
b3b94faa DT |
847 | } |
848 | } | |
849 | ||
086cc672 | 850 | sdp->sd_log_idle = 1; |
b3b94faa DT |
851 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
852 | gfs2_glock_dq_uninit(&ji_gh); | |
2e60d768 | 853 | INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func); |
b3b94faa DT |
854 | return 0; |
855 | ||
97fd734b AD |
856 | fail_statfs: |
857 | uninit_statfs(sdp); | |
a91ea69f | 858 | fail_jinode_gh: |
601ef0d5 BP |
859 | /* A withdraw may have done dq/uninit so now we need to check it */ |
860 | if (!sdp->sd_args.ar_spectator && | |
861 | gfs2_holder_initialized(&sdp->sd_jinode_gh)) | |
b3b94faa | 862 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
a91ea69f | 863 | fail_journal_gh: |
601ef0d5 BP |
864 | if (!sdp->sd_args.ar_spectator && |
865 | gfs2_holder_initialized(&sdp->sd_journal_gh)) | |
b3b94faa | 866 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
a91ea69f | 867 | fail_jindex: |
b3b94faa | 868 | gfs2_jindex_free(sdp); |
130cf526 | 869 | if (gfs2_holder_initialized(&ji_gh)) |
b3b94faa | 870 | gfs2_glock_dq_uninit(&ji_gh); |
a91ea69f | 871 | fail: |
f42faf4f | 872 | iput(sdp->sd_jindex); |
b3b94faa DT |
873 | return error; |
874 | } | |
875 | ||
56aa72d0 | 876 | static struct lock_class_key gfs2_quota_imutex_key; |
b3b94faa DT |
877 | |
878 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
879 | { | |
b3b94faa | 880 | int error = 0; |
2b0143b5 | 881 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
882 | |
883 | if (undo) | |
f42faf4f SW |
884 | goto fail_qinode; |
885 | ||
f42faf4f | 886 | error = init_journal(sdp, undo); |
0e48e055 | 887 | complete_all(&sdp->sd_journal_ready); |
f42faf4f | 888 | if (error) |
9b8df98f | 889 | goto fail; |
b3b94faa | 890 | |
b3b94faa | 891 | /* Read in the resource index inode */ |
9b8df98f | 892 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
893 | if (IS_ERR(sdp->sd_rindex)) { |
894 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa | 895 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
97fd734b | 896 | goto fail_journal; |
b3b94faa | 897 | } |
cf45b752 | 898 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
899 | |
900 | /* Read in the quota inode */ | |
9b8df98f | 901 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
902 | if (IS_ERR(sdp->sd_quota_inode)) { |
903 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
904 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
905 | goto fail_rindex; | |
906 | } | |
56aa72d0 | 907 | /* |
3e7aafc3 | 908 | * i_rwsem on quota files is special. Since this inode is hidden system |
56aa72d0 JK |
909 | * file, we are safe to define locking ourselves. |
910 | */ | |
9902af79 | 911 | lockdep_set_class(&sdp->sd_quota_inode->i_rwsem, |
56aa72d0 | 912 | &gfs2_quota_imutex_key); |
a365fbf3 SW |
913 | |
914 | error = gfs2_rindex_update(sdp); | |
915 | if (error) | |
916 | goto fail_qinode; | |
917 | ||
b3b94faa DT |
918 | return 0; |
919 | ||
f42faf4f SW |
920 | fail_qinode: |
921 | iput(sdp->sd_quota_inode); | |
f42faf4f | 922 | fail_rindex: |
b3b94faa | 923 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 924 | iput(sdp->sd_rindex); |
f42faf4f SW |
925 | fail_journal: |
926 | init_journal(sdp, UNDO); | |
f42faf4f | 927 | fail: |
b3b94faa DT |
928 | return error; |
929 | } | |
930 | ||
931 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
932 | { | |
f42faf4f | 933 | struct inode *pn = NULL; |
b3b94faa DT |
934 | char buf[30]; |
935 | int error = 0; | |
5c676f6d | 936 | struct gfs2_inode *ip; |
2b0143b5 | 937 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
938 | |
939 | if (sdp->sd_args.ar_spectator) | |
940 | return 0; | |
941 | ||
942 | if (undo) | |
943 | goto fail_qc_gh; | |
944 | ||
9b8df98f | 945 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
946 | if (IS_ERR(pn)) { |
947 | error = PTR_ERR(pn); | |
b3b94faa DT |
948 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
949 | return error; | |
950 | } | |
951 | ||
b3b94faa | 952 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
953 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
954 | if (IS_ERR(sdp->sd_qc_inode)) { | |
955 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
956 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
957 | goto fail_ut_i; | |
958 | } | |
959 | ||
f42faf4f | 960 | iput(pn); |
b3b94faa DT |
961 | pn = NULL; |
962 | ||
feaa7bba | 963 | ip = GFS2_I(sdp->sd_qc_inode); |
ebdc416c | 964 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_NOPID, |
b3b94faa DT |
965 | &sdp->sd_qc_gh); |
966 | if (error) { | |
967 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
97fd734b | 968 | goto fail_qc_i; |
b3b94faa DT |
969 | } |
970 | ||
971 | return 0; | |
972 | ||
a91ea69f | 973 | fail_qc_gh: |
b3b94faa | 974 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 975 | fail_qc_i: |
f42faf4f | 976 | iput(sdp->sd_qc_inode); |
a91ea69f | 977 | fail_ut_i: |
6fde2242 | 978 | iput(pn); |
b3b94faa DT |
979 | return error; |
980 | } | |
981 | ||
f057f6cd | 982 | static const match_table_t nolock_tokens = { |
ea22eee4 | 983 | { Opt_jid, "jid=%d", }, |
f057f6cd SW |
984 | { Opt_err, NULL }, |
985 | }; | |
986 | ||
987 | static const struct lm_lockops nolock_ops = { | |
988 | .lm_proto_name = "lock_nolock", | |
fc0e38da | 989 | .lm_put_lock = gfs2_glock_free, |
f057f6cd SW |
990 | .lm_tokens = &nolock_tokens, |
991 | }; | |
992 | ||
da755fdb SW |
993 | /** |
994 | * gfs2_lm_mount - mount a locking protocol | |
995 | * @sdp: the filesystem | |
da755fdb SW |
996 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
997 | * | |
998 | * Returns: errno | |
999 | */ | |
1000 | ||
1001 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
1002 | { | |
f057f6cd SW |
1003 | const struct lm_lockops *lm; |
1004 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
1005 | struct gfs2_args *args = &sdp->sd_args; | |
1006 | const char *proto = sdp->sd_proto_name; | |
1007 | const char *table = sdp->sd_table_name; | |
f057f6cd SW |
1008 | char *o, *options; |
1009 | int ret; | |
da755fdb | 1010 | |
f057f6cd SW |
1011 | if (!strcmp("lock_nolock", proto)) { |
1012 | lm = &nolock_ops; | |
1013 | sdp->sd_args.ar_localflocks = 1; | |
f057f6cd SW |
1014 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
1015 | } else if (!strcmp("lock_dlm", proto)) { | |
1016 | lm = &gfs2_dlm_ops; | |
1017 | #endif | |
1018 | } else { | |
d77d1b58 | 1019 | pr_info("can't find protocol %s\n", proto); |
f057f6cd SW |
1020 | return -ENOENT; |
1021 | } | |
da755fdb SW |
1022 | |
1023 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
1024 | ||
f057f6cd SW |
1025 | ls->ls_ops = lm; |
1026 | ls->ls_first = 1; | |
da755fdb | 1027 | |
f057f6cd SW |
1028 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
1029 | substring_t tmp[MAX_OPT_ARGS]; | |
1030 | int token, option; | |
1031 | ||
1032 | if (!o || !*o) | |
1033 | continue; | |
1034 | ||
1035 | token = match_token(o, *lm->lm_tokens, tmp); | |
1036 | switch (token) { | |
1037 | case Opt_jid: | |
1038 | ret = match_int(&tmp[0], &option); | |
1039 | if (ret || option < 0) | |
1040 | goto hostdata_error; | |
ba6e9364 SW |
1041 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
1042 | ls->ls_jid = option; | |
f057f6cd SW |
1043 | break; |
1044 | case Opt_id: | |
4875647a | 1045 | case Opt_nodir: |
2b88f7c5 | 1046 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
1047 | break; |
1048 | case Opt_first: | |
1049 | ret = match_int(&tmp[0], &option); | |
1050 | if (ret || (option != 0 && option != 1)) | |
1051 | goto hostdata_error; | |
1052 | ls->ls_first = option; | |
1053 | break; | |
f057f6cd SW |
1054 | case Opt_err: |
1055 | default: | |
1056 | hostdata_error: | |
1057 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
1058 | return -EINVAL; | |
1059 | } | |
da755fdb SW |
1060 | } |
1061 | ||
f057f6cd | 1062 | if (lm->lm_mount == NULL) { |
47b7ec1d | 1063 | fs_info(sdp, "Now mounting FS (format %u)...\n", sdp->sd_sb.sb_fs_format); |
19237039 | 1064 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1065 | return 0; |
da755fdb | 1066 | } |
e0c2a9aa | 1067 | ret = lm->lm_mount(sdp, table); |
f057f6cd | 1068 | if (ret == 0) |
47b7ec1d AP |
1069 | fs_info(sdp, "Joined cluster. Now mounting FS (format %u)...\n", |
1070 | sdp->sd_sb.sb_fs_format); | |
19237039 | 1071 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1072 | return ret; |
da755fdb SW |
1073 | } |
1074 | ||
1075 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1076 | { | |
f057f6cd | 1077 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
eb43e660 | 1078 | if (likely(!gfs2_withdrawn(sdp)) && lm->lm_unmount) |
f057f6cd | 1079 | lm->lm_unmount(sdp); |
da755fdb | 1080 | } |
b3b94faa | 1081 | |
ba6e9364 SW |
1082 | static int wait_on_journal(struct gfs2_sbd *sdp) |
1083 | { | |
ba6e9364 SW |
1084 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
1085 | return 0; | |
1086 | ||
74316201 N |
1087 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, TASK_INTERRUPTIBLE) |
1088 | ? -EINTR : 0; | |
ba6e9364 SW |
1089 | } |
1090 | ||
8633ecfa SW |
1091 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
1092 | { | |
1093 | struct super_block *sb = sdp->sd_vfs; | |
1094 | char ro[20]; | |
1095 | char spectator[20]; | |
1096 | char *envp[] = { ro, spectator, NULL }; | |
bc98a42c | 1097 | sprintf(ro, "RDONLY=%d", sb_rdonly(sb)); |
8633ecfa SW |
1098 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
1099 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
1100 | } | |
1101 | ||
a28dc123 BP |
1102 | static int init_threads(struct gfs2_sbd *sdp) |
1103 | { | |
1104 | struct task_struct *p; | |
1105 | int error = 0; | |
1106 | ||
1107 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
1108 | if (IS_ERR(p)) { | |
1109 | error = PTR_ERR(p); | |
1110 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
1111 | return error; | |
1112 | } | |
1113 | sdp->sd_logd_process = p; | |
1114 | ||
1115 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
1116 | if (IS_ERR(p)) { | |
1117 | error = PTR_ERR(p); | |
1118 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
1119 | goto fail; | |
1120 | } | |
1121 | sdp->sd_quotad_process = p; | |
1122 | return 0; | |
1123 | ||
1124 | fail: | |
1125 | kthread_stop(sdp->sd_logd_process); | |
1126 | sdp->sd_logd_process = NULL; | |
1127 | return error; | |
1128 | } | |
1129 | ||
b3b94faa | 1130 | /** |
1f52aa08 | 1131 | * gfs2_fill_super - Read in superblock |
b3b94faa | 1132 | * @sb: The VFS superblock |
c551f66c | 1133 | * @fc: Mount options and flags |
b3b94faa | 1134 | * |
1f52aa08 | 1135 | * Returns: -errno |
b3b94faa | 1136 | */ |
1f52aa08 | 1137 | static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc) |
b3b94faa | 1138 | { |
1f52aa08 AP |
1139 | struct gfs2_args *args = fc->fs_private; |
1140 | int silent = fc->sb_flags & SB_SILENT; | |
b3b94faa DT |
1141 | struct gfs2_sbd *sdp; |
1142 | struct gfs2_holder mount_gh; | |
96b1454f | 1143 | struct gfs2_holder freeze_gh; |
b3b94faa DT |
1144 | int error; |
1145 | ||
1146 | sdp = init_sbd(sb); | |
1147 | if (!sdp) { | |
d77d1b58 | 1148 | pr_warn("can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1149 | return -ENOMEM; |
1150 | } | |
f55073ff | 1151 | sdp->sd_args = *args; |
b3b94faa | 1152 | |
fe64d517 | 1153 | if (sdp->sd_args.ar_spectator) { |
1751e8a6 | 1154 | sb->s_flags |= SB_RDONLY; |
e8ca5cc5 | 1155 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
fe64d517 | 1156 | } |
6f04c1c7 | 1157 | if (sdp->sd_args.ar_posix_acl) |
1751e8a6 | 1158 | sb->s_flags |= SB_POSIXACL; |
f25934c5 CH |
1159 | if (sdp->sd_args.ar_nobarrier) |
1160 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1161 | |
1751e8a6 | 1162 | sb->s_flags |= SB_NOSEC; |
719ee344 SW |
1163 | sb->s_magic = GFS2_MAGIC; |
1164 | sb->s_op = &gfs2_super_ops; | |
41ced6dc | 1165 | sb->s_d_op = &gfs2_dops; |
719ee344 | 1166 | sb->s_export_op = &gfs2_export_ops; |
cc632e7f | 1167 | sb->s_qcop = &gfs2_quotactl_ops; |
de3b08d3 | 1168 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
cc632e7f | 1169 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
719ee344 SW |
1170 | sb->s_time_gran = 1; |
1171 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1172 | |
1173 | /* Set up the buffer cache and fill in some fake block size values | |
1174 | to allow us to read-in the on-disk superblock. */ | |
1175 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1176 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1177 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1178 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 1179 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
b3b94faa | 1180 | |
5e687eac | 1181 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1182 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1183 | if (sdp->sd_args.ar_statfs_quantum) { | |
1184 | sdp->sd_tune.gt_statfs_slow = 0; | |
1185 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
32e471ef | 1186 | } else { |
3d3c10f2 BM |
1187 | sdp->sd_tune.gt_statfs_slow = 1; |
1188 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1189 | } | |
48c2b613 | 1190 | |
b3b94faa | 1191 | error = init_names(sdp, silent); |
c2a04b02 JI |
1192 | if (error) |
1193 | goto fail_free; | |
b3b94faa | 1194 | |
561b7969 | 1195 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name); |
e0c2a9aa | 1196 | |
0247f4e9 AG |
1197 | sdp->sd_delete_wq = alloc_workqueue("gfs2-delete/%s", |
1198 | WQ_MEM_RECLAIM | WQ_FREEZABLE, 0, sdp->sd_fsname); | |
1199 | error = -ENOMEM; | |
1200 | if (!sdp->sd_delete_wq) | |
1201 | goto fail_free; | |
1202 | ||
b3b94faa DT |
1203 | error = gfs2_sys_fs_add(sdp); |
1204 | if (error) | |
0247f4e9 | 1205 | goto fail_delete_wq; |
0d515210 BP |
1206 | |
1207 | gfs2_create_debugfs_file(sdp); | |
b3b94faa DT |
1208 | |
1209 | error = gfs2_lm_mount(sdp, silent); | |
1210 | if (error) | |
0d515210 | 1211 | goto fail_debug; |
b3b94faa DT |
1212 | |
1213 | error = init_locking(sdp, &mount_gh, DO); | |
1214 | if (error) | |
1215 | goto fail_lm; | |
1216 | ||
9b8df98f | 1217 | error = init_sb(sdp, silent); |
b3b94faa DT |
1218 | if (error) |
1219 | goto fail_locking; | |
b3b94faa | 1220 | |
47b7ec1d AP |
1221 | /* Turn rgrplvb on by default if fs format is recent enough */ |
1222 | if (!sdp->sd_args.ar_got_rgrplvb && sdp->sd_sb.sb_fs_format > 1801) | |
1223 | sdp->sd_args.ar_rgrplvb = 1; | |
1224 | ||
ba6e9364 SW |
1225 | error = wait_on_journal(sdp); |
1226 | if (error) | |
1227 | goto fail_sb; | |
1228 | ||
feb47ca9 SW |
1229 | /* |
1230 | * If user space has failed to join the cluster or some similar | |
1231 | * failure has occurred, then the journal id will contain a | |
1232 | * negative (error) number. This will then be returned to the | |
1233 | * caller (of the mount syscall). We do this even for spectator | |
1234 | * mounts (which just write a jid of 0 to indicate "ok" even though | |
1235 | * the jid is unused in the spectator case) | |
1236 | */ | |
1237 | if (sdp->sd_lockstruct.ls_jid < 0) { | |
1238 | error = sdp->sd_lockstruct.ls_jid; | |
1239 | sdp->sd_lockstruct.ls_jid = 0; | |
1240 | goto fail_sb; | |
1241 | } | |
1242 | ||
e0c2a9aa | 1243 | if (sdp->sd_args.ar_spectator) |
561b7969 | 1244 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s", |
e0c2a9aa DT |
1245 | sdp->sd_table_name); |
1246 | else | |
561b7969 | 1247 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u", |
e0c2a9aa DT |
1248 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); |
1249 | ||
b3b94faa DT |
1250 | error = init_inodes(sdp, DO); |
1251 | if (error) | |
f42faf4f | 1252 | goto fail_sb; |
b3b94faa DT |
1253 | |
1254 | error = init_per_node(sdp, DO); | |
1255 | if (error) | |
1256 | goto fail_inodes; | |
1257 | ||
1258 | error = gfs2_statfs_init(sdp); | |
1259 | if (error) { | |
1260 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1261 | goto fail_per_node; | |
1262 | } | |
1263 | ||
a28dc123 BP |
1264 | if (!sb_rdonly(sb)) { |
1265 | error = init_threads(sdp); | |
1266 | if (error) { | |
1267 | gfs2_withdraw_delayed(sdp); | |
1268 | goto fail_per_node; | |
1269 | } | |
1270 | } | |
1271 | ||
96b1454f BP |
1272 | error = gfs2_freeze_lock(sdp, &freeze_gh, 0); |
1273 | if (error) | |
1274 | goto fail_per_node; | |
b780cc61 | 1275 | |
96b1454f | 1276 | if (!sb_rdonly(sb)) |
b3b94faa | 1277 | error = gfs2_make_fs_rw(sdp); |
b3b94faa | 1278 | |
96b1454f BP |
1279 | gfs2_freeze_unlock(&freeze_gh); |
1280 | if (error) { | |
a28dc123 BP |
1281 | if (sdp->sd_quotad_process) |
1282 | kthread_stop(sdp->sd_quotad_process); | |
1283 | sdp->sd_quotad_process = NULL; | |
1284 | if (sdp->sd_logd_process) | |
1285 | kthread_stop(sdp->sd_logd_process); | |
1286 | sdp->sd_logd_process = NULL; | |
96b1454f BP |
1287 | fs_err(sdp, "can't make FS RW: %d\n", error); |
1288 | goto fail_per_node; | |
1289 | } | |
b3b94faa | 1290 | gfs2_glock_dq_uninit(&mount_gh); |
8633ecfa | 1291 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1292 | return 0; |
1293 | ||
a91ea69f | 1294 | fail_per_node: |
b3b94faa | 1295 | init_per_node(sdp, UNDO); |
a91ea69f | 1296 | fail_inodes: |
b3b94faa | 1297 | init_inodes(sdp, UNDO); |
a91ea69f | 1298 | fail_sb: |
9b8df98f SW |
1299 | if (sdp->sd_root_dir) |
1300 | dput(sdp->sd_root_dir); | |
1301 | if (sdp->sd_master_dir) | |
1302 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1303 | if (sb->s_root) |
1304 | dput(sb->s_root); | |
9b8df98f | 1305 | sb->s_root = NULL; |
a91ea69f | 1306 | fail_locking: |
b3b94faa | 1307 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1308 | fail_lm: |
0e48e055 | 1309 | complete_all(&sdp->sd_journal_ready); |
fefc03bf | 1310 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1311 | gfs2_lm_unmount(sdp); |
0d515210 | 1312 | fail_debug: |
5f882096 | 1313 | gfs2_delete_debugfs_file(sdp); |
0d515210 | 1314 | gfs2_sys_fs_del(sdp); |
0247f4e9 AG |
1315 | fail_delete_wq: |
1316 | destroy_workqueue(sdp->sd_delete_wq); | |
c2a04b02 JI |
1317 | fail_free: |
1318 | free_sbd(sdp); | |
5c676f6d | 1319 | sb->s_fs_info = NULL; |
b3b94faa DT |
1320 | return error; |
1321 | } | |
1322 | ||
1f52aa08 AP |
1323 | /** |
1324 | * gfs2_get_tree - Get the GFS2 superblock and root directory | |
1325 | * @fc: The filesystem context | |
1326 | * | |
1327 | * Returns: 0 or -errno on error | |
1328 | */ | |
1329 | static int gfs2_get_tree(struct fs_context *fc) | |
b3b94faa | 1330 | { |
1f52aa08 AP |
1331 | struct gfs2_args *args = fc->fs_private; |
1332 | struct gfs2_sbd *sdp; | |
1333 | int error; | |
1334 | ||
1335 | error = get_tree_bdev(fc, gfs2_fill_super); | |
1336 | if (error) | |
1337 | return error; | |
1338 | ||
1339 | sdp = fc->root->d_sb->s_fs_info; | |
1340 | dput(fc->root); | |
1341 | if (args->ar_meta) | |
1342 | fc->root = dget(sdp->sd_master_dir); | |
1343 | else | |
1344 | fc->root = dget(sdp->sd_root_dir); | |
f55073ff | 1345 | return 0; |
86384605 AD |
1346 | } |
1347 | ||
1f52aa08 | 1348 | static void gfs2_fc_free(struct fs_context *fc) |
f6d03139 | 1349 | { |
1f52aa08 AP |
1350 | struct gfs2_args *args = fc->fs_private; |
1351 | ||
1352 | kfree(args); | |
f6d03139 SW |
1353 | } |
1354 | ||
1f52aa08 AP |
1355 | enum gfs2_param { |
1356 | Opt_lockproto, | |
1357 | Opt_locktable, | |
1358 | Opt_hostdata, | |
1359 | Opt_spectator, | |
1360 | Opt_ignore_local_fs, | |
1361 | Opt_localflocks, | |
1362 | Opt_localcaching, | |
1363 | Opt_debug, | |
1364 | Opt_upgrade, | |
1365 | Opt_acl, | |
1366 | Opt_quota, | |
48ce73b1 | 1367 | Opt_quota_flag, |
1f52aa08 AP |
1368 | Opt_suiddir, |
1369 | Opt_data, | |
1370 | Opt_meta, | |
1371 | Opt_discard, | |
1372 | Opt_commit, | |
1373 | Opt_errors, | |
1374 | Opt_statfs_quantum, | |
1375 | Opt_statfs_percent, | |
1376 | Opt_quota_quantum, | |
1377 | Opt_barrier, | |
1378 | Opt_rgrplvb, | |
1379 | Opt_loccookie, | |
1380 | }; | |
f55073ff | 1381 | |
5eede625 | 1382 | static const struct constant_table gfs2_param_quota[] = { |
48ce73b1 AV |
1383 | {"off", GFS2_QUOTA_OFF}, |
1384 | {"account", GFS2_QUOTA_ACCOUNT}, | |
1385 | {"on", GFS2_QUOTA_ON}, | |
2710c957 | 1386 | {} |
1f52aa08 | 1387 | }; |
f55073ff | 1388 | |
1f52aa08 AP |
1389 | enum opt_data { |
1390 | Opt_data_writeback = GFS2_DATA_WRITEBACK, | |
1391 | Opt_data_ordered = GFS2_DATA_ORDERED, | |
1392 | }; | |
f55073ff | 1393 | |
5eede625 | 1394 | static const struct constant_table gfs2_param_data[] = { |
2710c957 AV |
1395 | {"writeback", Opt_data_writeback }, |
1396 | {"ordered", Opt_data_ordered }, | |
1397 | {} | |
1398 | }; | |
1399 | ||
1f52aa08 AP |
1400 | enum opt_errors { |
1401 | Opt_errors_withdraw = GFS2_ERRORS_WITHDRAW, | |
1402 | Opt_errors_panic = GFS2_ERRORS_PANIC, | |
1403 | }; | |
f55073ff | 1404 | |
5eede625 | 1405 | static const struct constant_table gfs2_param_errors[] = { |
2710c957 AV |
1406 | {"withdraw", Opt_errors_withdraw }, |
1407 | {"panic", Opt_errors_panic }, | |
1408 | {} | |
1409 | }; | |
1410 | ||
d7167b14 | 1411 | static const struct fs_parameter_spec gfs2_fs_parameters[] = { |
1f52aa08 AP |
1412 | fsparam_string ("lockproto", Opt_lockproto), |
1413 | fsparam_string ("locktable", Opt_locktable), | |
1414 | fsparam_string ("hostdata", Opt_hostdata), | |
1415 | fsparam_flag ("spectator", Opt_spectator), | |
1416 | fsparam_flag ("norecovery", Opt_spectator), | |
1417 | fsparam_flag ("ignore_local_fs", Opt_ignore_local_fs), | |
1418 | fsparam_flag ("localflocks", Opt_localflocks), | |
1419 | fsparam_flag ("localcaching", Opt_localcaching), | |
1420 | fsparam_flag_no("debug", Opt_debug), | |
1421 | fsparam_flag ("upgrade", Opt_upgrade), | |
1422 | fsparam_flag_no("acl", Opt_acl), | |
1423 | fsparam_flag_no("suiddir", Opt_suiddir), | |
2710c957 | 1424 | fsparam_enum ("data", Opt_data, gfs2_param_data), |
1f52aa08 AP |
1425 | fsparam_flag ("meta", Opt_meta), |
1426 | fsparam_flag_no("discard", Opt_discard), | |
1427 | fsparam_s32 ("commit", Opt_commit), | |
2710c957 | 1428 | fsparam_enum ("errors", Opt_errors, gfs2_param_errors), |
1f52aa08 AP |
1429 | fsparam_s32 ("statfs_quantum", Opt_statfs_quantum), |
1430 | fsparam_s32 ("statfs_percent", Opt_statfs_percent), | |
1431 | fsparam_s32 ("quota_quantum", Opt_quota_quantum), | |
1432 | fsparam_flag_no("barrier", Opt_barrier), | |
1433 | fsparam_flag_no("rgrplvb", Opt_rgrplvb), | |
1434 | fsparam_flag_no("loccookie", Opt_loccookie), | |
1435 | /* quota can be a flag or an enum so it gets special treatment */ | |
48ce73b1 AV |
1436 | fsparam_flag_no("quota", Opt_quota_flag), |
1437 | fsparam_enum("quota", Opt_quota, gfs2_param_quota), | |
1f52aa08 AP |
1438 | {} |
1439 | }; | |
f55073ff | 1440 | |
1f52aa08 AP |
1441 | /* Parse a single mount parameter */ |
1442 | static int gfs2_parse_param(struct fs_context *fc, struct fs_parameter *param) | |
1443 | { | |
1444 | struct gfs2_args *args = fc->fs_private; | |
1445 | struct fs_parse_result result; | |
1446 | int o; | |
1447 | ||
d7167b14 | 1448 | o = fs_parse(fc, gfs2_fs_parameters, param, &result); |
1f52aa08 AP |
1449 | if (o < 0) |
1450 | return o; | |
1451 | ||
1452 | switch (o) { | |
1453 | case Opt_lockproto: | |
204c0300 | 1454 | strscpy(args->ar_lockproto, param->string, GFS2_LOCKNAME_LEN); |
1f52aa08 AP |
1455 | break; |
1456 | case Opt_locktable: | |
204c0300 | 1457 | strscpy(args->ar_locktable, param->string, GFS2_LOCKNAME_LEN); |
1f52aa08 AP |
1458 | break; |
1459 | case Opt_hostdata: | |
204c0300 | 1460 | strscpy(args->ar_hostdata, param->string, GFS2_LOCKNAME_LEN); |
1f52aa08 AP |
1461 | break; |
1462 | case Opt_spectator: | |
1463 | args->ar_spectator = 1; | |
1464 | break; | |
1465 | case Opt_ignore_local_fs: | |
1466 | /* Retained for backwards compat only */ | |
1467 | break; | |
1468 | case Opt_localflocks: | |
1469 | args->ar_localflocks = 1; | |
1470 | break; | |
1471 | case Opt_localcaching: | |
1472 | /* Retained for backwards compat only */ | |
1473 | break; | |
1474 | case Opt_debug: | |
1475 | if (result.boolean && args->ar_errors == GFS2_ERRORS_PANIC) | |
77cb271e | 1476 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1477 | args->ar_debug = result.boolean; |
1478 | break; | |
1479 | case Opt_upgrade: | |
1480 | /* Retained for backwards compat only */ | |
1481 | break; | |
1482 | case Opt_acl: | |
1483 | args->ar_posix_acl = result.boolean; | |
1484 | break; | |
48ce73b1 AV |
1485 | case Opt_quota_flag: |
1486 | args->ar_quota = result.negated ? GFS2_QUOTA_OFF : GFS2_QUOTA_ON; | |
1487 | break; | |
1f52aa08 | 1488 | case Opt_quota: |
48ce73b1 | 1489 | args->ar_quota = result.int_32; |
1f52aa08 AP |
1490 | break; |
1491 | case Opt_suiddir: | |
1492 | args->ar_suiddir = result.boolean; | |
1493 | break; | |
1494 | case Opt_data: | |
1495 | /* The uint_32 result maps directly to GFS2_DATA_* */ | |
1496 | args->ar_data = result.uint_32; | |
1497 | break; | |
1498 | case Opt_meta: | |
1499 | args->ar_meta = 1; | |
1500 | break; | |
1501 | case Opt_discard: | |
1502 | args->ar_discard = result.boolean; | |
1503 | break; | |
1504 | case Opt_commit: | |
1505 | if (result.int_32 <= 0) | |
77cb271e | 1506 | return invalfc(fc, "commit mount option requires a positive numeric argument"); |
1f52aa08 AP |
1507 | args->ar_commit = result.int_32; |
1508 | break; | |
1509 | case Opt_statfs_quantum: | |
1510 | if (result.int_32 < 0) | |
77cb271e | 1511 | return invalfc(fc, "statfs_quantum mount option requires a non-negative numeric argument"); |
1f52aa08 AP |
1512 | args->ar_statfs_quantum = result.int_32; |
1513 | break; | |
1514 | case Opt_quota_quantum: | |
1515 | if (result.int_32 <= 0) | |
77cb271e | 1516 | return invalfc(fc, "quota_quantum mount option requires a positive numeric argument"); |
1f52aa08 AP |
1517 | args->ar_quota_quantum = result.int_32; |
1518 | break; | |
1519 | case Opt_statfs_percent: | |
1520 | if (result.int_32 < 0 || result.int_32 > 100) | |
77cb271e | 1521 | return invalfc(fc, "statfs_percent mount option requires a numeric argument between 0 and 100"); |
1f52aa08 AP |
1522 | args->ar_statfs_percent = result.int_32; |
1523 | break; | |
1524 | case Opt_errors: | |
1525 | if (args->ar_debug && result.uint_32 == GFS2_ERRORS_PANIC) | |
77cb271e | 1526 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1527 | args->ar_errors = result.uint_32; |
1528 | break; | |
1529 | case Opt_barrier: | |
1530 | args->ar_nobarrier = result.boolean; | |
1531 | break; | |
1532 | case Opt_rgrplvb: | |
1533 | args->ar_rgrplvb = result.boolean; | |
47b7ec1d | 1534 | args->ar_got_rgrplvb = 1; |
1f52aa08 AP |
1535 | break; |
1536 | case Opt_loccookie: | |
1537 | args->ar_loccookie = result.boolean; | |
1538 | break; | |
1539 | default: | |
77cb271e | 1540 | return invalfc(fc, "invalid mount option: %s", param->key); |
f55073ff | 1541 | } |
1f52aa08 AP |
1542 | return 0; |
1543 | } | |
f55073ff | 1544 | |
1f52aa08 AP |
1545 | static int gfs2_reconfigure(struct fs_context *fc) |
1546 | { | |
1547 | struct super_block *sb = fc->root->d_sb; | |
1548 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1549 | struct gfs2_args *oldargs = &sdp->sd_args; | |
1550 | struct gfs2_args *newargs = fc->fs_private; | |
1551 | struct gfs2_tune *gt = &sdp->sd_tune; | |
1552 | int error = 0; | |
1553 | ||
1554 | sync_filesystem(sb); | |
1555 | ||
1556 | spin_lock(>->gt_spin); | |
1557 | oldargs->ar_commit = gt->gt_logd_secs; | |
1558 | oldargs->ar_quota_quantum = gt->gt_quota_quantum; | |
1559 | if (gt->gt_statfs_slow) | |
1560 | oldargs->ar_statfs_quantum = 0; | |
1561 | else | |
1562 | oldargs->ar_statfs_quantum = gt->gt_statfs_quantum; | |
1563 | spin_unlock(>->gt_spin); | |
1564 | ||
1565 | if (strcmp(newargs->ar_lockproto, oldargs->ar_lockproto)) { | |
77cb271e | 1566 | errorfc(fc, "reconfiguration of locking protocol not allowed"); |
1f52aa08 AP |
1567 | return -EINVAL; |
1568 | } | |
1569 | if (strcmp(newargs->ar_locktable, oldargs->ar_locktable)) { | |
77cb271e | 1570 | errorfc(fc, "reconfiguration of lock table not allowed"); |
1f52aa08 AP |
1571 | return -EINVAL; |
1572 | } | |
1573 | if (strcmp(newargs->ar_hostdata, oldargs->ar_hostdata)) { | |
77cb271e | 1574 | errorfc(fc, "reconfiguration of host data not allowed"); |
1f52aa08 AP |
1575 | return -EINVAL; |
1576 | } | |
1577 | if (newargs->ar_spectator != oldargs->ar_spectator) { | |
77cb271e | 1578 | errorfc(fc, "reconfiguration of spectator mode not allowed"); |
1f52aa08 AP |
1579 | return -EINVAL; |
1580 | } | |
1581 | if (newargs->ar_localflocks != oldargs->ar_localflocks) { | |
77cb271e | 1582 | errorfc(fc, "reconfiguration of localflocks not allowed"); |
1f52aa08 AP |
1583 | return -EINVAL; |
1584 | } | |
1585 | if (newargs->ar_meta != oldargs->ar_meta) { | |
77cb271e | 1586 | errorfc(fc, "switching between gfs2 and gfs2meta not allowed"); |
1f52aa08 AP |
1587 | return -EINVAL; |
1588 | } | |
1589 | if (oldargs->ar_spectator) | |
1590 | fc->sb_flags |= SB_RDONLY; | |
1591 | ||
1592 | if ((sb->s_flags ^ fc->sb_flags) & SB_RDONLY) { | |
96b1454f BP |
1593 | struct gfs2_holder freeze_gh; |
1594 | ||
1595 | error = gfs2_freeze_lock(sdp, &freeze_gh, 0); | |
1596 | if (error) | |
1597 | return -EINVAL; | |
1598 | ||
1f52aa08 | 1599 | if (fc->sb_flags & SB_RDONLY) { |
eb602521 | 1600 | gfs2_make_fs_ro(sdp); |
1f52aa08 AP |
1601 | } else { |
1602 | error = gfs2_make_fs_rw(sdp); | |
1603 | if (error) | |
77cb271e | 1604 | errorfc(fc, "unable to remount read-write"); |
1f52aa08 | 1605 | } |
96b1454f | 1606 | gfs2_freeze_unlock(&freeze_gh); |
f55073ff | 1607 | } |
1f52aa08 | 1608 | sdp->sd_args = *newargs; |
f55073ff | 1609 | |
1f52aa08 AP |
1610 | if (sdp->sd_args.ar_posix_acl) |
1611 | sb->s_flags |= SB_POSIXACL; | |
1612 | else | |
1613 | sb->s_flags &= ~SB_POSIXACL; | |
1614 | if (sdp->sd_args.ar_nobarrier) | |
1615 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
f55073ff | 1616 | else |
1f52aa08 AP |
1617 | clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
1618 | spin_lock(>->gt_spin); | |
1619 | gt->gt_logd_secs = newargs->ar_commit; | |
1620 | gt->gt_quota_quantum = newargs->ar_quota_quantum; | |
1621 | if (newargs->ar_statfs_quantum) { | |
1622 | gt->gt_statfs_slow = 0; | |
1623 | gt->gt_statfs_quantum = newargs->ar_statfs_quantum; | |
1624 | } | |
1625 | else { | |
1626 | gt->gt_statfs_slow = 1; | |
1627 | gt->gt_statfs_quantum = 30; | |
1628 | } | |
1629 | spin_unlock(>->gt_spin); | |
1630 | ||
1631 | gfs2_online_uevent(sdp); | |
1632 | return error; | |
1633 | } | |
1634 | ||
1635 | static const struct fs_context_operations gfs2_context_ops = { | |
1636 | .free = gfs2_fc_free, | |
1637 | .parse_param = gfs2_parse_param, | |
1638 | .get_tree = gfs2_get_tree, | |
1639 | .reconfigure = gfs2_reconfigure, | |
1640 | }; | |
1641 | ||
1642 | /* Set up the filesystem mount context */ | |
1643 | static int gfs2_init_fs_context(struct fs_context *fc) | |
1644 | { | |
1645 | struct gfs2_args *args; | |
1646 | ||
d5798141 | 1647 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
1f52aa08 AP |
1648 | if (args == NULL) |
1649 | return -ENOMEM; | |
1650 | ||
d5798141 AP |
1651 | if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { |
1652 | struct gfs2_sbd *sdp = fc->root->d_sb->s_fs_info; | |
1f52aa08 | 1653 | |
d5798141 AP |
1654 | *args = sdp->sd_args; |
1655 | } else { | |
1656 | memset(args, 0, sizeof(*args)); | |
1657 | args->ar_quota = GFS2_QUOTA_DEFAULT; | |
1658 | args->ar_data = GFS2_DATA_DEFAULT; | |
1659 | args->ar_commit = 30; | |
1660 | args->ar_statfs_quantum = 30; | |
1661 | args->ar_quota_quantum = 60; | |
1662 | args->ar_errors = GFS2_ERRORS_DEFAULT; | |
1663 | } | |
1f52aa08 AP |
1664 | fc->fs_private = args; |
1665 | fc->ops = &gfs2_context_ops; | |
1666 | return 0; | |
f55073ff SW |
1667 | } |
1668 | ||
1f52aa08 | 1669 | static int set_meta_super(struct super_block *s, struct fs_context *fc) |
f6d03139 SW |
1670 | { |
1671 | return -EINVAL; | |
1672 | } | |
1673 | ||
1f52aa08 AP |
1674 | static int test_meta_super(struct super_block *s, struct fs_context *fc) |
1675 | { | |
1676 | return (fc->sget_key == s->s_bdev); | |
1677 | } | |
1678 | ||
1679 | static int gfs2_meta_get_tree(struct fs_context *fc) | |
86384605 | 1680 | { |
f6d03139 | 1681 | struct super_block *s; |
003dec89 | 1682 | struct gfs2_sbd *sdp; |
e24977d4 | 1683 | struct path path; |
86384605 | 1684 | int error; |
907b9bce | 1685 | |
1f52aa08 AP |
1686 | if (!fc->source || !*fc->source) |
1687 | return -EINVAL; | |
3df629d8 | 1688 | |
1f52aa08 | 1689 | error = kern_path(fc->source, LOOKUP_FOLLOW, &path); |
86384605 | 1690 | if (error) { |
d77d1b58 | 1691 | pr_warn("path_lookup on %s returned error %d\n", |
1f52aa08 AP |
1692 | fc->source, error); |
1693 | return error; | |
86384605 | 1694 | } |
1f52aa08 AP |
1695 | fc->fs_type = &gfs2_fs_type; |
1696 | fc->sget_key = path.dentry->d_sb->s_bdev; | |
1697 | s = sget_fc(fc, test_meta_super, set_meta_super); | |
e24977d4 | 1698 | path_put(&path); |
f6d03139 | 1699 | if (IS_ERR(s)) { |
d77d1b58 | 1700 | pr_warn("gfs2 mount does not exist\n"); |
1f52aa08 | 1701 | return PTR_ERR(s); |
86384605 | 1702 | } |
1f52aa08 | 1703 | if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) { |
f55073ff | 1704 | deactivate_locked_super(s); |
1f52aa08 | 1705 | return -EBUSY; |
f55073ff | 1706 | } |
f6d03139 | 1707 | sdp = s->s_fs_info; |
1f52aa08 AP |
1708 | fc->root = dget(sdp->sd_master_dir); |
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | static const struct fs_context_operations gfs2_meta_context_ops = { | |
30aecae8 | 1713 | .free = gfs2_fc_free, |
1f52aa08 AP |
1714 | .get_tree = gfs2_meta_get_tree, |
1715 | }; | |
1716 | ||
1717 | static int gfs2_meta_init_fs_context(struct fs_context *fc) | |
1718 | { | |
1719 | int ret = gfs2_init_fs_context(fc); | |
1720 | ||
1721 | if (ret) | |
1722 | return ret; | |
1723 | ||
1724 | fc->ops = &gfs2_meta_context_ops; | |
1725 | return 0; | |
b3b94faa DT |
1726 | } |
1727 | ||
b88beb9a AG |
1728 | /** |
1729 | * gfs2_evict_inodes - evict inodes cooperatively | |
1730 | * @sb: the superblock | |
1731 | * | |
1732 | * When evicting an inode with a zero link count, we are trying to upgrade the | |
1733 | * inode's iopen glock from SH to EX mode in order to determine if we can | |
1734 | * delete the inode. The other nodes are supposed to evict the inode from | |
1735 | * their caches if they can, and to poke the inode's inode glock if they cannot | |
1736 | * do so. Either behavior allows gfs2_upgrade_iopen_glock() to proceed | |
1737 | * quickly, but if the other nodes are not cooperating, the lock upgrading | |
1738 | * attempt will time out. Since inodes are evicted sequentially, this can add | |
1739 | * up quickly. | |
1740 | * | |
1741 | * Function evict_inodes() tries to keep the s_inode_list_lock list locked over | |
1742 | * a long time, which prevents other inodes from being evicted concurrently. | |
1743 | * This precludes the cooperative behavior we are looking for. This special | |
1744 | * version of evict_inodes() avoids that. | |
1745 | * | |
1746 | * Modeled after drop_pagecache_sb(). | |
1747 | */ | |
1748 | static void gfs2_evict_inodes(struct super_block *sb) | |
1749 | { | |
1750 | struct inode *inode, *toput_inode = NULL; | |
1751 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1752 | ||
1753 | set_bit(SDF_EVICTING, &sdp->sd_flags); | |
1754 | ||
1755 | spin_lock(&sb->s_inode_list_lock); | |
1756 | list_for_each_entry(inode, &sb->s_inodes, i_sb_list) { | |
1757 | spin_lock(&inode->i_lock); | |
1758 | if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) && | |
1759 | !need_resched()) { | |
1760 | spin_unlock(&inode->i_lock); | |
1761 | continue; | |
1762 | } | |
1763 | atomic_inc(&inode->i_count); | |
1764 | spin_unlock(&inode->i_lock); | |
1765 | spin_unlock(&sb->s_inode_list_lock); | |
1766 | ||
1767 | iput(toput_inode); | |
1768 | toput_inode = inode; | |
1769 | ||
1770 | cond_resched(); | |
1771 | spin_lock(&sb->s_inode_list_lock); | |
1772 | } | |
1773 | spin_unlock(&sb->s_inode_list_lock); | |
1774 | iput(toput_inode); | |
1775 | } | |
1776 | ||
419c93e0 | 1777 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1778 | { |
1779 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1780 | |
1781 | if (sdp == NULL) { | |
1782 | kill_block_super(sb); | |
1783 | return; | |
3af165ac | 1784 | } |
88a19ad0 | 1785 | |
805c0907 | 1786 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SYNC | GFS2_LFC_KILL_SB); |
88a19ad0 SW |
1787 | dput(sdp->sd_root_dir); |
1788 | dput(sdp->sd_master_dir); | |
1789 | sdp->sd_root_dir = NULL; | |
1790 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1791 | shrink_dcache_sb(sb); |
6b388abc | 1792 | |
b88beb9a AG |
1793 | gfs2_evict_inodes(sb); |
1794 | ||
6b388abc AG |
1795 | /* |
1796 | * Flush and then drain the delete workqueue here (via | |
1797 | * destroy_workqueue()) to ensure that any delete work that | |
1798 | * may be running will also see the SDF_DEACTIVATING flag. | |
1799 | */ | |
1c900151 | 1800 | set_bit(SDF_DEACTIVATING, &sdp->sd_flags); |
6b388abc AG |
1801 | gfs2_flush_delete_work(sdp); |
1802 | destroy_workqueue(sdp->sd_delete_wq); | |
1803 | ||
0d515210 | 1804 | kill_block_super(sb); |
86384605 AD |
1805 | } |
1806 | ||
b3b94faa DT |
1807 | struct file_system_type gfs2_fs_type = { |
1808 | .name = "gfs2", | |
1809 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1810 | .init_fs_context = gfs2_init_fs_context, |
d7167b14 | 1811 | .parameters = gfs2_fs_parameters, |
419c93e0 SW |
1812 | .kill_sb = gfs2_kill_sb, |
1813 | .owner = THIS_MODULE, | |
1814 | }; | |
7f78e035 | 1815 | MODULE_ALIAS_FS("gfs2"); |
419c93e0 SW |
1816 | |
1817 | struct file_system_type gfs2meta_fs_type = { | |
1818 | .name = "gfs2meta", | |
1819 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1820 | .init_fs_context = gfs2_meta_init_fs_context, |
b3b94faa DT |
1821 | .owner = THIS_MODULE, |
1822 | }; | |
7f78e035 | 1823 | MODULE_ALIAS_FS("gfs2meta"); |