Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
da6dd40d | 3 | * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
b3b94faa DT |
15 | #include <linux/blkdev.h> |
16 | #include <linux/kthread.h> | |
86384605 AD |
17 | #include <linux/namei.h> |
18 | #include <linux/mount.h> | |
5c676f6d | 19 | #include <linux/gfs2_ondisk.h> |
7d308590 | 20 | #include <linux/lm_interface.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 23 | #include "incore.h" |
da6dd40d | 24 | #include "bmap.h" |
b3b94faa DT |
25 | #include "daemon.h" |
26 | #include "glock.h" | |
27 | #include "glops.h" | |
28 | #include "inode.h" | |
29 | #include "lm.h" | |
30 | #include "mount.h" | |
b3b94faa | 31 | #include "ops_fstype.h" |
ca5a939b | 32 | #include "ops_dentry.h" |
b3b94faa DT |
33 | #include "ops_super.h" |
34 | #include "recovery.h" | |
35 | #include "rgrp.h" | |
36 | #include "super.h" | |
b3b94faa | 37 | #include "sys.h" |
5c676f6d | 38 | #include "util.h" |
bb3b0e3d | 39 | #include "log.h" |
b3b94faa DT |
40 | |
41 | #define DO 0 | |
42 | #define UNDO 1 | |
43 | ||
44 | static struct gfs2_sbd *init_sbd(struct super_block *sb) | |
45 | { | |
46 | struct gfs2_sbd *sdp; | |
b3b94faa | 47 | |
85d1da67 | 48 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
49 | if (!sdp) |
50 | return NULL; | |
51 | ||
5c676f6d | 52 | sb->s_fs_info = sdp; |
b3b94faa DT |
53 | sdp->sd_vfs = sb; |
54 | ||
55 | gfs2_tune_init(&sdp->sd_tune); | |
56 | ||
b3b94faa DT |
57 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
58 | spin_lock_init(&sdp->sd_reclaim_lock); | |
59 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 60 | |
f55ab26a | 61 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 62 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
63 | |
64 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 65 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
66 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
67 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
68 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
69 | ||
70 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
71 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 72 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 73 | |
b3b94faa DT |
74 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
75 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 76 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
77 | |
78 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa | 79 | |
b3b94faa DT |
80 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); |
81 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
82 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
83 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
d7b616e2 | 84 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
b3b94faa | 85 | |
71b86f56 | 86 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
87 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
88 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
89 | ||
484adff8 | 90 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
91 | atomic_set(&sdp->sd_log_in_flight, 0); |
92 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
b3b94faa DT |
93 | |
94 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
95 | ||
f55ab26a | 96 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
97 | |
98 | return sdp; | |
99 | } | |
100 | ||
419c93e0 | 101 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 102 | { |
419c93e0 | 103 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
104 | |
105 | sb->s_magic = GFS2_MAGIC; | |
106 | sb->s_op = &gfs2_super_ops; | |
107 | sb->s_export_op = &gfs2_export_ops; | |
4bd91ba1 | 108 | sb->s_time_gran = 1; |
b3b94faa DT |
109 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
110 | ||
111 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 112 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
113 | |
114 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
115 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
116 | } |
117 | ||
118 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
119 | { | |
b3b94faa DT |
120 | char *proto, *table; |
121 | int error = 0; | |
122 | ||
123 | proto = sdp->sd_args.ar_lockproto; | |
124 | table = sdp->sd_args.ar_locktable; | |
125 | ||
126 | /* Try to autodetect */ | |
127 | ||
128 | if (!proto[0] || !table[0]) { | |
bb8d8a6f SW |
129 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
130 | if (error) | |
131 | return error; | |
3cf1e7be SW |
132 | |
133 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
134 | if (error) |
135 | goto out; | |
136 | ||
137 | if (!proto[0]) | |
3cf1e7be | 138 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 139 | if (!table[0]) |
3cf1e7be | 140 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
141 | } |
142 | ||
143 | if (!table[0]) | |
144 | table = sdp->sd_vfs->s_id; | |
145 | ||
146 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
147 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
148 | ||
5d35e31f DC |
149 | table = sdp->sd_table_name; |
150 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
151 | *table = '_'; |
152 | ||
a91ea69f | 153 | out: |
b3b94faa DT |
154 | return error; |
155 | } | |
156 | ||
157 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
158 | int undo) | |
159 | { | |
160 | struct task_struct *p; | |
161 | int error = 0; | |
162 | ||
163 | if (undo) | |
164 | goto fail_trans; | |
165 | ||
b3b94faa DT |
166 | for (sdp->sd_glockd_num = 0; |
167 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
168 | sdp->sd_glockd_num++) { | |
169 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
170 | error = IS_ERR(p); | |
171 | if (error) { | |
172 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
173 | goto fail; | |
174 | } | |
175 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
176 | } | |
177 | ||
178 | error = gfs2_glock_nq_num(sdp, | |
179 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
180 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
181 | mount_gh); | |
182 | if (error) { | |
183 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
184 | goto fail; | |
185 | } | |
186 | ||
187 | error = gfs2_glock_nq_num(sdp, | |
188 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
189 | LM_ST_SHARED, | |
579b78a4 | 190 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
191 | &sdp->sd_live_gh); |
192 | if (error) { | |
193 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
194 | goto fail_mount; | |
195 | } | |
196 | ||
197 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
198 | CREATE, &sdp->sd_rename_gl); | |
199 | if (error) { | |
200 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
201 | goto fail_live; | |
202 | } | |
203 | ||
204 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
205 | CREATE, &sdp->sd_trans_gl); | |
206 | if (error) { | |
207 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
208 | goto fail_rename; | |
209 | } | |
210 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
211 | ||
212 | return 0; | |
213 | ||
feaa7bba | 214 | fail_trans: |
b3b94faa | 215 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 216 | fail_rename: |
b3b94faa | 217 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 218 | fail_live: |
b3b94faa | 219 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 220 | fail_mount: |
b3b94faa | 221 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 222 | fail: |
b3b94faa DT |
223 | while (sdp->sd_glockd_num--) |
224 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
225 | ||
b3b94faa DT |
226 | return error; |
227 | } | |
228 | ||
dbb7cae2 SW |
229 | static inline struct inode *gfs2_lookup_root(struct super_block *sb, |
230 | u64 no_addr) | |
f42faf4f | 231 | { |
7a9f53b3 | 232 | return gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); |
f42faf4f SW |
233 | } |
234 | ||
b3b94faa DT |
235 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
236 | { | |
237 | struct super_block *sb = sdp->sd_vfs; | |
238 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 239 | u64 no_addr; |
f42faf4f | 240 | struct inode *inode; |
b3b94faa DT |
241 | int error = 0; |
242 | ||
243 | if (undo) { | |
88721877 RC |
244 | if (sb->s_root) { |
245 | dput(sb->s_root); | |
246 | sb->s_root = NULL; | |
247 | } | |
b3b94faa DT |
248 | return 0; |
249 | } | |
907b9bce | 250 | |
feaa7bba | 251 | error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
b3b94faa DT |
252 | LM_ST_SHARED, 0, &sb_gh); |
253 | if (error) { | |
254 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
255 | return error; | |
256 | } | |
257 | ||
258 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
259 | if (error) { | |
260 | fs_err(sdp, "can't read superblock: %d\n", error); | |
261 | goto out; | |
262 | } | |
263 | ||
264 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 265 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 266 | error = -EINVAL; |
b3b94faa DT |
267 | fs_err(sdp, "FS block size (%u) is too small for device " |
268 | "block size (%u)\n", | |
269 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
270 | goto out; | |
271 | } | |
272 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 273 | error = -EINVAL; |
b3b94faa DT |
274 | fs_err(sdp, "FS block size (%u) is too big for machine " |
275 | "page size (%u)\n", | |
276 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
277 | goto out; | |
278 | } | |
b3b94faa DT |
279 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
280 | ||
f42faf4f | 281 | /* Get the root inode */ |
dbb7cae2 | 282 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
419c93e0 | 283 | if (sb->s_type == &gfs2meta_fs_type) |
dbb7cae2 SW |
284 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; |
285 | inode = gfs2_lookup_root(sb, no_addr); | |
c9fd4307 SW |
286 | if (IS_ERR(inode)) { |
287 | error = PTR_ERR(inode); | |
f42faf4f SW |
288 | fs_err(sdp, "can't read in root inode: %d\n", error); |
289 | goto out; | |
290 | } | |
b3b94faa | 291 | |
f42faf4f SW |
292 | sb->s_root = d_alloc_root(inode); |
293 | if (!sb->s_root) { | |
294 | fs_err(sdp, "can't get root dentry\n"); | |
295 | error = -ENOMEM; | |
c9fd4307 | 296 | iput(inode); |
34eaae39 DC |
297 | } else |
298 | sb->s_root->d_op = &gfs2_dops; | |
299 | ||
f42faf4f | 300 | out: |
b3b94faa | 301 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
302 | return error; |
303 | } | |
304 | ||
da6dd40d BP |
305 | /** |
306 | * map_journal_extents - create a reusable "extent" mapping from all logical | |
307 | * blocks to all physical blocks for the given journal. This will save | |
308 | * us time when writing journal blocks. Most journals will have only one | |
309 | * extent that maps all their logical blocks. That's because gfs2.mkfs | |
310 | * arranges the journal blocks sequentially to maximize performance. | |
311 | * So the extent would map the first block for the entire file length. | |
312 | * However, gfs2_jadd can happen while file activity is happening, so | |
313 | * those journals may not be sequential. Less likely is the case where | |
314 | * the users created their own journals by mounting the metafs and | |
315 | * laying it out. But it's still possible. These journals might have | |
316 | * several extents. | |
317 | * | |
318 | * TODO: This should be done in bigger chunks rather than one block at a time, | |
319 | * but since it's only done at mount time, I'm not worried about the | |
320 | * time it takes. | |
321 | */ | |
322 | static int map_journal_extents(struct gfs2_sbd *sdp) | |
323 | { | |
324 | struct gfs2_jdesc *jd = sdp->sd_jdesc; | |
325 | unsigned int lb; | |
326 | u64 db, prev_db; /* logical block, disk block, prev disk block */ | |
327 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); | |
328 | struct gfs2_journal_extent *jext = NULL; | |
329 | struct buffer_head bh; | |
330 | int rc = 0; | |
331 | ||
da6dd40d BP |
332 | prev_db = 0; |
333 | ||
fa3742fa | 334 | for (lb = 0; lb < ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift; lb++) { |
da6dd40d BP |
335 | bh.b_state = 0; |
336 | bh.b_blocknr = 0; | |
337 | bh.b_size = 1 << ip->i_inode.i_blkbits; | |
338 | rc = gfs2_block_map(jd->jd_inode, lb, &bh, 0); | |
339 | db = bh.b_blocknr; | |
340 | if (rc || !db) { | |
341 | printk(KERN_INFO "GFS2 journal mapping error %d: lb=" | |
342 | "%u db=%llu\n", rc, lb, (unsigned long long)db); | |
343 | break; | |
344 | } | |
345 | if (!prev_db || db != prev_db + 1) { | |
346 | jext = kzalloc(sizeof(struct gfs2_journal_extent), | |
347 | GFP_KERNEL); | |
348 | if (!jext) { | |
349 | printk(KERN_INFO "GFS2 error: out of memory " | |
350 | "mapping journal extents.\n"); | |
351 | rc = -ENOMEM; | |
352 | break; | |
353 | } | |
354 | jext->dblock = db; | |
355 | jext->lblock = lb; | |
356 | jext->blocks = 1; | |
357 | list_add_tail(&jext->extent_list, &jd->extent_list); | |
358 | } else { | |
359 | jext->blocks++; | |
360 | } | |
361 | prev_db = db; | |
362 | } | |
363 | return rc; | |
364 | } | |
365 | ||
b3b94faa DT |
366 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
367 | { | |
368 | struct gfs2_holder ji_gh; | |
369 | struct task_struct *p; | |
5c676f6d | 370 | struct gfs2_inode *ip; |
b3b94faa DT |
371 | int jindex = 1; |
372 | int error = 0; | |
373 | ||
374 | if (undo) { | |
375 | jindex = 0; | |
376 | goto fail_recoverd; | |
377 | } | |
378 | ||
c752666c SW |
379 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
380 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 381 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 382 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 383 | } |
feaa7bba | 384 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 385 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
386 | |
387 | /* Load in the journal index special file */ | |
388 | ||
389 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
390 | if (error) { | |
391 | fs_err(sdp, "can't read journal index: %d\n", error); | |
392 | goto fail; | |
393 | } | |
394 | ||
395 | error = -EINVAL; | |
396 | if (!gfs2_jindex_size(sdp)) { | |
397 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 398 | goto fail_jindex; |
b3b94faa DT |
399 | } |
400 | ||
401 | if (sdp->sd_args.ar_spectator) { | |
402 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 403 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
b3b94faa DT |
404 | } else { |
405 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
406 | fs_err(sdp, "can't mount journal #%u\n", | |
407 | sdp->sd_lockstruct.ls_jid); | |
408 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
409 | gfs2_jindex_size(sdp), | |
410 | gfs2_jindex_size(sdp) - 1); | |
411 | goto fail_jindex; | |
412 | } | |
413 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
414 | ||
feaa7bba | 415 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
416 | &gfs2_journal_glops, |
417 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
418 | &sdp->sd_journal_gh); | |
419 | if (error) { | |
420 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
421 | goto fail_jindex; | |
422 | } | |
423 | ||
feaa7bba SW |
424 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
425 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 426 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
427 | &sdp->sd_jinode_gh); |
428 | if (error) { | |
429 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
430 | error); | |
431 | goto fail_journal_gh; | |
432 | } | |
433 | ||
434 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
435 | if (error) { | |
436 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
437 | sdp->sd_jdesc->jd_jid, error); | |
438 | goto fail_jinode_gh; | |
439 | } | |
fd041f0b | 440 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
da6dd40d BP |
441 | |
442 | /* Map the extents for this journal's blocks */ | |
443 | map_journal_extents(sdp); | |
b3b94faa DT |
444 | } |
445 | ||
446 | if (sdp->sd_lockstruct.ls_first) { | |
447 | unsigned int x; | |
448 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 449 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
450 | if (error) { |
451 | fs_err(sdp, "error recovering journal %u: %d\n", | |
452 | x, error); | |
453 | goto fail_jinode_gh; | |
454 | } | |
455 | } | |
456 | ||
457 | gfs2_lm_others_may_mount(sdp); | |
458 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 459 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
460 | if (error) { |
461 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
462 | goto fail_jinode_gh; | |
463 | } | |
464 | } | |
465 | ||
466 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
467 | gfs2_glock_dq_uninit(&ji_gh); | |
468 | jindex = 0; | |
469 | ||
b3b94faa DT |
470 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
471 | error = IS_ERR(p); | |
472 | if (error) { | |
473 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
474 | goto fail_jinode_gh; | |
475 | } | |
476 | sdp->sd_recoverd_process = p; | |
477 | ||
478 | return 0; | |
479 | ||
a91ea69f | 480 | fail_recoverd: |
b3b94faa | 481 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 482 | fail_jinode_gh: |
b3b94faa DT |
483 | if (!sdp->sd_args.ar_spectator) |
484 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 485 | fail_journal_gh: |
b3b94faa DT |
486 | if (!sdp->sd_args.ar_spectator) |
487 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 488 | fail_jindex: |
b3b94faa DT |
489 | gfs2_jindex_free(sdp); |
490 | if (jindex) | |
491 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 492 | fail: |
f42faf4f | 493 | iput(sdp->sd_jindex); |
b3b94faa DT |
494 | return error; |
495 | } | |
496 | ||
b3b94faa DT |
497 | |
498 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
499 | { | |
b3b94faa | 500 | int error = 0; |
5c676f6d | 501 | struct gfs2_inode *ip; |
c9fd4307 | 502 | struct inode *inode; |
b3b94faa DT |
503 | |
504 | if (undo) | |
f42faf4f SW |
505 | goto fail_qinode; |
506 | ||
dbb7cae2 | 507 | inode = gfs2_lookup_root(sdp->sd_vfs, sdp->sd_sb.sb_master_dir.no_addr); |
c9fd4307 SW |
508 | if (IS_ERR(inode)) { |
509 | error = PTR_ERR(inode); | |
f42faf4f SW |
510 | fs_err(sdp, "can't read in master directory: %d\n", error); |
511 | goto fail; | |
512 | } | |
c9fd4307 | 513 | sdp->sd_master_dir = inode; |
f42faf4f SW |
514 | |
515 | error = init_journal(sdp, undo); | |
516 | if (error) | |
517 | goto fail_master; | |
b3b94faa DT |
518 | |
519 | /* Read in the master inode number inode */ | |
c752666c SW |
520 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
521 | if (IS_ERR(sdp->sd_inum_inode)) { | |
522 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 523 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 524 | goto fail_journal; |
b3b94faa DT |
525 | } |
526 | ||
f42faf4f | 527 | |
b3b94faa | 528 | /* Read in the master statfs inode */ |
c752666c SW |
529 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
530 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
531 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 532 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 533 | goto fail_inum; |
b3b94faa DT |
534 | } |
535 | ||
536 | /* Read in the resource index inode */ | |
c752666c SW |
537 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
538 | if (IS_ERR(sdp->sd_rindex)) { | |
539 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
540 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
541 | goto fail_statfs; | |
542 | } | |
feaa7bba | 543 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d SW |
544 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
545 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
546 | |
547 | /* Read in the quota inode */ | |
c752666c SW |
548 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
549 | if (IS_ERR(sdp->sd_quota_inode)) { | |
550 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
551 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
552 | goto fail_rindex; | |
553 | } | |
b3b94faa DT |
554 | return 0; |
555 | ||
f42faf4f SW |
556 | fail_qinode: |
557 | iput(sdp->sd_quota_inode); | |
f42faf4f | 558 | fail_rindex: |
b3b94faa | 559 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 560 | iput(sdp->sd_rindex); |
f42faf4f SW |
561 | fail_statfs: |
562 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
563 | fail_inum: |
564 | iput(sdp->sd_inum_inode); | |
565 | fail_journal: | |
566 | init_journal(sdp, UNDO); | |
567 | fail_master: | |
568 | iput(sdp->sd_master_dir); | |
569 | fail: | |
b3b94faa DT |
570 | return error; |
571 | } | |
572 | ||
573 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
574 | { | |
f42faf4f | 575 | struct inode *pn = NULL; |
b3b94faa DT |
576 | char buf[30]; |
577 | int error = 0; | |
5c676f6d | 578 | struct gfs2_inode *ip; |
b3b94faa DT |
579 | |
580 | if (sdp->sd_args.ar_spectator) | |
581 | return 0; | |
582 | ||
583 | if (undo) | |
584 | goto fail_qc_gh; | |
585 | ||
c752666c SW |
586 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
587 | if (IS_ERR(pn)) { | |
588 | error = PTR_ERR(pn); | |
b3b94faa DT |
589 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
590 | return error; | |
591 | } | |
592 | ||
593 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
594 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
595 | if (IS_ERR(sdp->sd_ir_inode)) { | |
596 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
597 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
598 | goto fail; | |
599 | } | |
600 | ||
601 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
602 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
603 | if (IS_ERR(sdp->sd_sc_inode)) { | |
604 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
605 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
606 | goto fail_ir_i; | |
607 | } | |
608 | ||
b3b94faa | 609 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
610 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
611 | if (IS_ERR(sdp->sd_qc_inode)) { | |
612 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
613 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
614 | goto fail_ut_i; | |
615 | } | |
616 | ||
f42faf4f | 617 | iput(pn); |
b3b94faa DT |
618 | pn = NULL; |
619 | ||
feaa7bba | 620 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 621 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 622 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
623 | &sdp->sd_ir_gh); |
624 | if (error) { | |
625 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
626 | goto fail_qc_i; | |
627 | } | |
628 | ||
feaa7bba | 629 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 630 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 631 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
632 | &sdp->sd_sc_gh); |
633 | if (error) { | |
634 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
635 | goto fail_ir_gh; | |
636 | } | |
637 | ||
feaa7bba | 638 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 639 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 640 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
641 | &sdp->sd_qc_gh); |
642 | if (error) { | |
643 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
644 | goto fail_ut_gh; | |
645 | } | |
646 | ||
647 | return 0; | |
648 | ||
a91ea69f | 649 | fail_qc_gh: |
b3b94faa | 650 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 651 | fail_ut_gh: |
b3b94faa | 652 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 653 | fail_ir_gh: |
b3b94faa | 654 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 655 | fail_qc_i: |
f42faf4f | 656 | iput(sdp->sd_qc_inode); |
a91ea69f | 657 | fail_ut_i: |
f42faf4f | 658 | iput(sdp->sd_sc_inode); |
a91ea69f | 659 | fail_ir_i: |
f42faf4f | 660 | iput(sdp->sd_ir_inode); |
a91ea69f | 661 | fail: |
b3b94faa | 662 | if (pn) |
f42faf4f | 663 | iput(pn); |
b3b94faa DT |
664 | return error; |
665 | } | |
666 | ||
667 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
668 | { | |
669 | struct task_struct *p; | |
670 | int error = 0; | |
671 | ||
672 | if (undo) | |
feaa7bba | 673 | goto fail_quotad; |
b3b94faa DT |
674 | |
675 | sdp->sd_log_flush_time = jiffies; | |
676 | sdp->sd_jindex_refresh_time = jiffies; | |
677 | ||
678 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
679 | error = IS_ERR(p); | |
680 | if (error) { | |
681 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
682 | return error; | |
683 | } | |
684 | sdp->sd_logd_process = p; | |
685 | ||
686 | sdp->sd_statfs_sync_time = jiffies; | |
687 | sdp->sd_quota_sync_time = jiffies; | |
688 | ||
689 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
690 | error = IS_ERR(p); | |
691 | if (error) { | |
692 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
693 | goto fail; | |
694 | } | |
695 | sdp->sd_quotad_process = p; | |
696 | ||
b3b94faa DT |
697 | return 0; |
698 | ||
b3b94faa | 699 | |
feaa7bba | 700 | fail_quotad: |
b3b94faa | 701 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 702 | fail: |
b3b94faa | 703 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
704 | return error; |
705 | } | |
706 | ||
707 | /** | |
708 | * fill_super - Read in superblock | |
709 | * @sb: The VFS superblock | |
710 | * @data: Mount options | |
711 | * @silent: Don't complain if it's not a GFS2 filesystem | |
712 | * | |
713 | * Returns: errno | |
714 | */ | |
715 | ||
716 | static int fill_super(struct super_block *sb, void *data, int silent) | |
717 | { | |
718 | struct gfs2_sbd *sdp; | |
719 | struct gfs2_holder mount_gh; | |
720 | int error; | |
721 | ||
722 | sdp = init_sbd(sb); | |
723 | if (!sdp) { | |
d92a8d48 | 724 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
725 | return -ENOMEM; |
726 | } | |
727 | ||
728 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
729 | if (error) { | |
d92a8d48 | 730 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
731 | goto fail; |
732 | } | |
733 | ||
419c93e0 SW |
734 | init_vfs(sb, SDF_NOATIME); |
735 | ||
736 | /* Set up the buffer cache and fill in some fake block size values | |
737 | to allow us to read-in the on-disk superblock. */ | |
738 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
739 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
740 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
741 | GFS2_BASIC_BLOCK_SHIFT; | |
742 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
743 | |
744 | error = init_names(sdp, silent); | |
745 | if (error) | |
746 | goto fail; | |
747 | ||
7c52b166 RP |
748 | gfs2_create_debugfs_file(sdp); |
749 | ||
b3b94faa DT |
750 | error = gfs2_sys_fs_add(sdp); |
751 | if (error) | |
752 | goto fail; | |
753 | ||
754 | error = gfs2_lm_mount(sdp, silent); | |
755 | if (error) | |
756 | goto fail_sys; | |
757 | ||
758 | error = init_locking(sdp, &mount_gh, DO); | |
759 | if (error) | |
760 | goto fail_lm; | |
761 | ||
762 | error = init_sb(sdp, silent, DO); | |
763 | if (error) | |
764 | goto fail_locking; | |
b3b94faa DT |
765 | |
766 | error = init_inodes(sdp, DO); | |
767 | if (error) | |
f42faf4f | 768 | goto fail_sb; |
b3b94faa DT |
769 | |
770 | error = init_per_node(sdp, DO); | |
771 | if (error) | |
772 | goto fail_inodes; | |
773 | ||
774 | error = gfs2_statfs_init(sdp); | |
775 | if (error) { | |
776 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
777 | goto fail_per_node; | |
778 | } | |
779 | ||
780 | error = init_threads(sdp, DO); | |
781 | if (error) | |
782 | goto fail_per_node; | |
783 | ||
784 | if (!(sb->s_flags & MS_RDONLY)) { | |
785 | error = gfs2_make_fs_rw(sdp); | |
786 | if (error) { | |
787 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
788 | goto fail_threads; | |
789 | } | |
790 | } | |
791 | ||
792 | gfs2_glock_dq_uninit(&mount_gh); | |
793 | ||
794 | return 0; | |
795 | ||
a91ea69f | 796 | fail_threads: |
b3b94faa | 797 | init_threads(sdp, UNDO); |
a91ea69f | 798 | fail_per_node: |
b3b94faa | 799 | init_per_node(sdp, UNDO); |
a91ea69f | 800 | fail_inodes: |
b3b94faa | 801 | init_inodes(sdp, UNDO); |
a91ea69f | 802 | fail_sb: |
b3b94faa | 803 | init_sb(sdp, 0, UNDO); |
a91ea69f | 804 | fail_locking: |
b3b94faa | 805 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 806 | fail_lm: |
b3b94faa DT |
807 | gfs2_gl_hash_clear(sdp, WAIT); |
808 | gfs2_lm_unmount(sdp); | |
809 | while (invalidate_inodes(sb)) | |
810 | yield(); | |
a91ea69f | 811 | fail_sys: |
b3b94faa | 812 | gfs2_sys_fs_del(sdp); |
a91ea69f | 813 | fail: |
5f882096 | 814 | gfs2_delete_debugfs_file(sdp); |
a2c45807 | 815 | kfree(sdp); |
5c676f6d | 816 | sb->s_fs_info = NULL; |
b3b94faa DT |
817 | return error; |
818 | } | |
819 | ||
ccd6efd0 AM |
820 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
821 | const char *dev_name, void *data, struct vfsmount *mnt) | |
b3b94faa | 822 | { |
86384605 AD |
823 | struct super_block *sb; |
824 | struct gfs2_sbd *sdp; | |
825 | int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); | |
826 | if (error) | |
827 | goto out; | |
828 | sb = mnt->mnt_sb; | |
26c1a574 | 829 | sdp = sb->s_fs_info; |
86384605 AD |
830 | sdp->sd_gfs2mnt = mnt; |
831 | out: | |
832 | return error; | |
833 | } | |
834 | ||
907b9bce | 835 | static int fill_super_meta(struct super_block *sb, struct super_block *new, |
86384605 AD |
836 | void *data, int silent) |
837 | { | |
838 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
839 | struct inode *inode; | |
840 | int error = 0; | |
841 | ||
842 | new->s_fs_info = sdp; | |
843 | sdp->sd_vfs_meta = sb; | |
844 | ||
845 | init_vfs(new, SDF_NOATIME); | |
846 | ||
847 | /* Get the master inode */ | |
848 | inode = igrab(sdp->sd_master_dir); | |
849 | ||
850 | new->s_root = d_alloc_root(inode); | |
851 | if (!new->s_root) { | |
852 | fs_err(sdp, "can't get root dentry\n"); | |
853 | error = -ENOMEM; | |
854 | iput(inode); | |
bbbe4512 AB |
855 | } else |
856 | new->s_root->d_op = &gfs2_dops; | |
86384605 AD |
857 | |
858 | return error; | |
859 | } | |
a91ea69f | 860 | |
86384605 AD |
861 | static int set_bdev_super(struct super_block *s, void *data) |
862 | { | |
863 | s->s_bdev = data; | |
864 | s->s_dev = s->s_bdev->bd_dev; | |
865 | return 0; | |
866 | } | |
907b9bce | 867 | |
86384605 AD |
868 | static int test_bdev_super(struct super_block *s, void *data) |
869 | { | |
26c1a574 | 870 | return s->s_bdev == data; |
86384605 AD |
871 | } |
872 | ||
873 | static struct super_block* get_gfs2_sb(const char *dev_name) | |
874 | { | |
875 | struct kstat stat; | |
876 | struct nameidata nd; | |
877 | struct file_system_type *fstype; | |
878 | struct super_block *sb = NULL, *s; | |
86384605 | 879 | int error; |
907b9bce | 880 | |
86384605 AD |
881 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); |
882 | if (error) { | |
907b9bce | 883 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n", |
86384605 AD |
884 | dev_name); |
885 | goto out; | |
886 | } | |
4ac91378 | 887 | error = vfs_getattr(nd.path.mnt, nd.path.dentry, &stat); |
86384605 AD |
888 | |
889 | fstype = get_fs_type("gfs2"); | |
adb4ec13 | 890 | list_for_each_entry(s, &fstype->fs_supers, s_instances) { |
86384605 | 891 | if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) || |
4ac91378 JB |
892 | (S_ISDIR(stat.mode) && |
893 | s == nd.path.dentry->d_inode->i_sb)) { | |
86384605 AD |
894 | sb = s; |
895 | goto free_nd; | |
896 | } | |
897 | } | |
898 | ||
899 | printk(KERN_WARNING "GFS2: Unrecognized block device or " | |
d5a6751b | 900 | "mount point %s\n", dev_name); |
86384605 AD |
901 | |
902 | free_nd: | |
1d957f9b | 903 | path_put(&nd.path); |
86384605 AD |
904 | out: |
905 | return sb; | |
906 | } | |
907 | ||
908 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
909 | const char *dev_name, void *data, struct vfsmount *mnt) | |
910 | { | |
911 | int error = 0; | |
912 | struct super_block *sb = NULL, *new; | |
913 | struct gfs2_sbd *sdp; | |
86384605 AD |
914 | |
915 | sb = get_gfs2_sb(dev_name); | |
916 | if (!sb) { | |
917 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
918 | error = -ENOENT; | |
919 | goto error; | |
920 | } | |
2d3ba1ea | 921 | sdp = sb->s_fs_info; |
86384605 AD |
922 | if (sdp->sd_vfs_meta) { |
923 | printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n"); | |
924 | error = -EBUSY; | |
925 | goto error; | |
926 | } | |
f73ca1b7 | 927 | down(&sb->s_bdev->bd_mount_sem); |
86384605 | 928 | new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev); |
f73ca1b7 | 929 | up(&sb->s_bdev->bd_mount_sem); |
86384605 AD |
930 | if (IS_ERR(new)) { |
931 | error = PTR_ERR(new); | |
932 | goto error; | |
933 | } | |
934 | module_put(fs_type->owner); | |
935 | new->s_flags = flags; | |
936 | strlcpy(new->s_id, sb->s_id, sizeof(new->s_id)); | |
937 | sb_set_blocksize(new, sb->s_blocksize); | |
938 | error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0); | |
939 | if (error) { | |
940 | up_write(&new->s_umount); | |
941 | deactivate_super(new); | |
942 | goto error; | |
943 | } | |
907b9bce | 944 | |
86384605 | 945 | new->s_flags |= MS_ACTIVE; |
907b9bce | 946 | |
86384605 AD |
947 | /* Grab a reference to the gfs2 mount point */ |
948 | atomic_inc(&sdp->sd_gfs2mnt->mnt_count); | |
949 | return simple_set_mnt(mnt, new); | |
950 | error: | |
86384605 | 951 | return error; |
b3b94faa DT |
952 | } |
953 | ||
419c93e0 SW |
954 | static void gfs2_kill_sb(struct super_block *sb) |
955 | { | |
d1e2777d AD |
956 | if (sb->s_fs_info) { |
957 | gfs2_delete_debugfs_file(sb->s_fs_info); | |
958 | gfs2_meta_syncfs(sb->s_fs_info); | |
959 | } | |
419c93e0 SW |
960 | kill_block_super(sb); |
961 | } | |
962 | ||
86384605 AD |
963 | static void gfs2_kill_sb_meta(struct super_block *sb) |
964 | { | |
965 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
966 | generic_shutdown_super(sb); | |
967 | sdp->sd_vfs_meta = NULL; | |
968 | atomic_dec(&sdp->sd_gfs2mnt->mnt_count); | |
969 | } | |
970 | ||
b3b94faa DT |
971 | struct file_system_type gfs2_fs_type = { |
972 | .name = "gfs2", | |
973 | .fs_flags = FS_REQUIRES_DEV, | |
974 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
975 | .kill_sb = gfs2_kill_sb, |
976 | .owner = THIS_MODULE, | |
977 | }; | |
978 | ||
979 | struct file_system_type gfs2meta_fs_type = { | |
980 | .name = "gfs2meta", | |
981 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 AD |
982 | .get_sb = gfs2_get_sb_meta, |
983 | .kill_sb = gfs2_kill_sb_meta, | |
b3b94faa DT |
984 | .owner = THIS_MODULE, |
985 | }; | |
986 |