Commit | Line | Data |
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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
da6dd40d | 4 | * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
d77d1b58 JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
9e6e0a12 | 9 | #include <linux/bio.h> |
174cd4b1 | 10 | #include <linux/sched/signal.h> |
b3b94faa DT |
11 | #include <linux/slab.h> |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
9e6e0a12 SW |
15 | #include <linux/statfs.h> |
16 | #include <linux/seq_file.h> | |
17 | #include <linux/mount.h> | |
18 | #include <linux/kthread.h> | |
19 | #include <linux/delay.h> | |
5c676f6d | 20 | #include <linux/gfs2_ondisk.h> |
9e6e0a12 SW |
21 | #include <linux/crc32.h> |
22 | #include <linux/time.h> | |
e402746a | 23 | #include <linux/wait.h> |
a9185b41 | 24 | #include <linux/writeback.h> |
4667a0ec | 25 | #include <linux/backing-dev.h> |
2e60d768 | 26 | #include <linux/kernel.h> |
b3b94faa DT |
27 | |
28 | #include "gfs2.h" | |
5c676f6d | 29 | #include "incore.h" |
b3b94faa DT |
30 | #include "bmap.h" |
31 | #include "dir.h" | |
b3b94faa DT |
32 | #include "glock.h" |
33 | #include "glops.h" | |
34 | #include "inode.h" | |
35 | #include "log.h" | |
36 | #include "meta_io.h" | |
37 | #include "quota.h" | |
38 | #include "recovery.h" | |
39 | #include "rgrp.h" | |
40 | #include "super.h" | |
41 | #include "trans.h" | |
5c676f6d | 42 | #include "util.h" |
9e6e0a12 | 43 | #include "sys.h" |
307cf6e6 | 44 | #include "xattr.h" |
f4686c26 | 45 | #include "lops.h" |
9e6e0a12 | 46 | |
fefc03bf SW |
47 | /** |
48 | * gfs2_jindex_free - Clear all the journal index information | |
49 | * @sdp: The GFS2 superblock | |
50 | * | |
51 | */ | |
52 | ||
53 | void gfs2_jindex_free(struct gfs2_sbd *sdp) | |
54 | { | |
b50f227b | 55 | struct list_head list; |
fefc03bf | 56 | struct gfs2_jdesc *jd; |
fefc03bf SW |
57 | |
58 | spin_lock(&sdp->sd_jindex_spin); | |
59 | list_add(&list, &sdp->sd_jindex_list); | |
60 | list_del_init(&sdp->sd_jindex_list); | |
61 | sdp->sd_journals = 0; | |
62 | spin_unlock(&sdp->sd_jindex_spin); | |
63 | ||
64 | while (!list_empty(&list)) { | |
65 | jd = list_entry(list.next, struct gfs2_jdesc, jd_list); | |
b50f227b | 66 | gfs2_free_journal_extents(jd); |
fefc03bf SW |
67 | list_del(&jd->jd_list); |
68 | iput(jd->jd_inode); | |
69 | kfree(jd); | |
70 | } | |
71 | } | |
72 | ||
b3b94faa DT |
73 | static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) |
74 | { | |
75 | struct gfs2_jdesc *jd; | |
76 | int found = 0; | |
77 | ||
78 | list_for_each_entry(jd, head, jd_list) { | |
79 | if (jd->jd_jid == jid) { | |
80 | found = 1; | |
81 | break; | |
82 | } | |
83 | } | |
84 | ||
85 | if (!found) | |
86 | jd = NULL; | |
87 | ||
88 | return jd; | |
89 | } | |
90 | ||
91 | struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) | |
92 | { | |
93 | struct gfs2_jdesc *jd; | |
94 | ||
95 | spin_lock(&sdp->sd_jindex_spin); | |
96 | jd = jdesc_find_i(&sdp->sd_jindex_list, jid); | |
97 | spin_unlock(&sdp->sd_jindex_spin); | |
98 | ||
99 | return jd; | |
100 | } | |
101 | ||
b3b94faa DT |
102 | int gfs2_jdesc_check(struct gfs2_jdesc *jd) |
103 | { | |
feaa7bba SW |
104 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
105 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
a2e0f799 | 106 | u64 size = i_size_read(jd->jd_inode); |
b3b94faa | 107 | |
47a9a527 | 108 | if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, BIT(30))) |
b3b94faa | 109 | return -EIO; |
b3b94faa | 110 | |
a2e0f799 SW |
111 | jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; |
112 | ||
113 | if (gfs2_write_alloc_required(ip, 0, size)) { | |
b3b94faa | 114 | gfs2_consist_inode(ip); |
461cb419 | 115 | return -EIO; |
b3b94faa DT |
116 | } |
117 | ||
461cb419 | 118 | return 0; |
b3b94faa DT |
119 | } |
120 | ||
8ad151c2 SW |
121 | static int init_threads(struct gfs2_sbd *sdp) |
122 | { | |
123 | struct task_struct *p; | |
124 | int error = 0; | |
125 | ||
126 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
127 | if (IS_ERR(p)) { | |
128 | error = PTR_ERR(p); | |
129 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
130 | return error; | |
131 | } | |
132 | sdp->sd_logd_process = p; | |
133 | ||
134 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
135 | if (IS_ERR(p)) { | |
136 | error = PTR_ERR(p); | |
137 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
138 | goto fail; | |
139 | } | |
140 | sdp->sd_quotad_process = p; | |
141 | return 0; | |
142 | ||
143 | fail: | |
144 | kthread_stop(sdp->sd_logd_process); | |
5b3a9f34 | 145 | sdp->sd_logd_process = NULL; |
8ad151c2 SW |
146 | return error; |
147 | } | |
148 | ||
b3b94faa DT |
149 | /** |
150 | * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one | |
151 | * @sdp: the filesystem | |
152 | * | |
153 | * Returns: errno | |
154 | */ | |
155 | ||
156 | int gfs2_make_fs_rw(struct gfs2_sbd *sdp) | |
157 | { | |
feaa7bba | 158 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 159 | struct gfs2_glock *j_gl = ip->i_gl; |
2e60d768 | 160 | struct gfs2_holder freeze_gh; |
55167622 | 161 | struct gfs2_log_header_host head; |
b3b94faa DT |
162 | int error; |
163 | ||
8ad151c2 | 164 | error = init_threads(sdp); |
b3b94faa DT |
165 | if (error) |
166 | return error; | |
167 | ||
24972557 | 168 | error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, |
2e60d768 | 169 | &freeze_gh); |
8ad151c2 SW |
170 | if (error) |
171 | goto fail_threads; | |
172 | ||
1a14d3a6 | 173 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa | 174 | |
f4686c26 | 175 | error = gfs2_find_jhead(sdp->sd_jdesc, &head, false); |
b3b94faa DT |
176 | if (error) |
177 | goto fail; | |
178 | ||
179 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
180 | gfs2_consist(sdp); | |
181 | error = -EIO; | |
182 | goto fail; | |
183 | } | |
184 | ||
185 | /* Initialize some head of the log stuff */ | |
186 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
187 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
188 | ||
b3b94faa DT |
189 | error = gfs2_quota_init(sdp); |
190 | if (error) | |
a91ea69f | 191 | goto fail; |
b3b94faa DT |
192 | |
193 | set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); | |
194 | ||
2e60d768 | 195 | gfs2_glock_dq_uninit(&freeze_gh); |
b3b94faa DT |
196 | |
197 | return 0; | |
198 | ||
a91ea69f | 199 | fail: |
2e60d768 BM |
200 | freeze_gh.gh_flags |= GL_NOCACHE; |
201 | gfs2_glock_dq_uninit(&freeze_gh); | |
8ad151c2 | 202 | fail_threads: |
5b3a9f34 BP |
203 | if (sdp->sd_quotad_process) |
204 | kthread_stop(sdp->sd_quotad_process); | |
205 | sdp->sd_quotad_process = NULL; | |
206 | if (sdp->sd_logd_process) | |
207 | kthread_stop(sdp->sd_logd_process); | |
208 | sdp->sd_logd_process = NULL; | |
b3b94faa DT |
209 | return error; |
210 | } | |
211 | ||
1946f70a | 212 | void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) |
bb8d8a6f SW |
213 | { |
214 | const struct gfs2_statfs_change *str = buf; | |
215 | ||
216 | sc->sc_total = be64_to_cpu(str->sc_total); | |
217 | sc->sc_free = be64_to_cpu(str->sc_free); | |
218 | sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); | |
219 | } | |
220 | ||
221 | static void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) | |
222 | { | |
223 | struct gfs2_statfs_change *str = buf; | |
224 | ||
225 | str->sc_total = cpu_to_be64(sc->sc_total); | |
226 | str->sc_free = cpu_to_be64(sc->sc_free); | |
227 | str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); | |
228 | } | |
229 | ||
b3b94faa DT |
230 | int gfs2_statfs_init(struct gfs2_sbd *sdp) |
231 | { | |
feaa7bba | 232 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
bd209cc0 | 233 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
feaa7bba | 234 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 235 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
b3b94faa DT |
236 | struct buffer_head *m_bh, *l_bh; |
237 | struct gfs2_holder gh; | |
238 | int error; | |
239 | ||
240 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
241 | &gh); | |
242 | if (error) | |
243 | return error; | |
244 | ||
245 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
246 | if (error) | |
247 | goto out; | |
248 | ||
249 | if (sdp->sd_args.ar_spectator) { | |
250 | spin_lock(&sdp->sd_statfs_spin); | |
251 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
252 | sizeof(struct gfs2_dinode)); | |
253 | spin_unlock(&sdp->sd_statfs_spin); | |
254 | } else { | |
255 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
256 | if (error) | |
257 | goto out_m_bh; | |
258 | ||
259 | spin_lock(&sdp->sd_statfs_spin); | |
260 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
261 | sizeof(struct gfs2_dinode)); | |
262 | gfs2_statfs_change_in(l_sc, l_bh->b_data + | |
263 | sizeof(struct gfs2_dinode)); | |
264 | spin_unlock(&sdp->sd_statfs_spin); | |
265 | ||
266 | brelse(l_bh); | |
267 | } | |
268 | ||
a91ea69f | 269 | out_m_bh: |
b3b94faa | 270 | brelse(m_bh); |
a91ea69f | 271 | out: |
b3b94faa | 272 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
273 | return 0; |
274 | } | |
275 | ||
cd915493 SW |
276 | void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, |
277 | s64 dinodes) | |
b3b94faa | 278 | { |
feaa7bba | 279 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 280 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
3d3c10f2 | 281 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
b3b94faa | 282 | struct buffer_head *l_bh; |
c14f5735 BM |
283 | s64 x, y; |
284 | int need_sync = 0; | |
b3b94faa DT |
285 | int error; |
286 | ||
287 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
288 | if (error) | |
289 | return; | |
290 | ||
350a9b0a | 291 | gfs2_trans_add_meta(l_ip->i_gl, l_bh); |
b3b94faa DT |
292 | |
293 | spin_lock(&sdp->sd_statfs_spin); | |
294 | l_sc->sc_total += total; | |
295 | l_sc->sc_free += free; | |
296 | l_sc->sc_dinodes += dinodes; | |
907b9bce | 297 | gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); |
c14f5735 BM |
298 | if (sdp->sd_args.ar_statfs_percent) { |
299 | x = 100 * l_sc->sc_free; | |
300 | y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; | |
301 | if (x >= y || x <= -y) | |
302 | need_sync = 1; | |
303 | } | |
b3b94faa DT |
304 | spin_unlock(&sdp->sd_statfs_spin); |
305 | ||
306 | brelse(l_bh); | |
c14f5735 | 307 | if (need_sync) |
3d3c10f2 | 308 | gfs2_wake_up_statfs(sdp); |
b3b94faa DT |
309 | } |
310 | ||
1946f70a BM |
311 | void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, |
312 | struct buffer_head *l_bh) | |
313 | { | |
314 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); | |
315 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
316 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
317 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
318 | ||
350a9b0a | 319 | gfs2_trans_add_meta(l_ip->i_gl, l_bh); |
901c6c66 | 320 | gfs2_trans_add_meta(m_ip->i_gl, m_bh); |
1946f70a BM |
321 | |
322 | spin_lock(&sdp->sd_statfs_spin); | |
323 | m_sc->sc_total += l_sc->sc_total; | |
324 | m_sc->sc_free += l_sc->sc_free; | |
325 | m_sc->sc_dinodes += l_sc->sc_dinodes; | |
326 | memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); | |
327 | memset(l_bh->b_data + sizeof(struct gfs2_dinode), | |
328 | 0, sizeof(struct gfs2_statfs_change)); | |
1946f70a | 329 | gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); |
901c6c66 | 330 | spin_unlock(&sdp->sd_statfs_spin); |
1946f70a BM |
331 | } |
332 | ||
8c42d637 | 333 | int gfs2_statfs_sync(struct super_block *sb, int type) |
b3b94faa | 334 | { |
8c42d637 | 335 | struct gfs2_sbd *sdp = sb->s_fs_info; |
feaa7bba SW |
336 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
337 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
bd209cc0 AV |
338 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
339 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
b3b94faa DT |
340 | struct gfs2_holder gh; |
341 | struct buffer_head *m_bh, *l_bh; | |
342 | int error; | |
343 | ||
2e60d768 | 344 | sb_start_write(sb); |
b3b94faa DT |
345 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, |
346 | &gh); | |
347 | if (error) | |
2e60d768 | 348 | goto out; |
b3b94faa DT |
349 | |
350 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
351 | if (error) | |
2e60d768 | 352 | goto out_unlock; |
b3b94faa DT |
353 | |
354 | spin_lock(&sdp->sd_statfs_spin); | |
355 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
907b9bce | 356 | sizeof(struct gfs2_dinode)); |
b3b94faa DT |
357 | if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { |
358 | spin_unlock(&sdp->sd_statfs_spin); | |
359 | goto out_bh; | |
360 | } | |
361 | spin_unlock(&sdp->sd_statfs_spin); | |
362 | ||
363 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
364 | if (error) | |
365 | goto out_bh; | |
366 | ||
367 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); | |
368 | if (error) | |
369 | goto out_bh2; | |
370 | ||
1946f70a | 371 | update_statfs(sdp, m_bh, l_bh); |
3d3c10f2 | 372 | sdp->sd_statfs_force_sync = 0; |
b3b94faa DT |
373 | |
374 | gfs2_trans_end(sdp); | |
375 | ||
a91ea69f | 376 | out_bh2: |
b3b94faa | 377 | brelse(l_bh); |
a91ea69f | 378 | out_bh: |
b3b94faa | 379 | brelse(m_bh); |
2e60d768 | 380 | out_unlock: |
b3b94faa | 381 | gfs2_glock_dq_uninit(&gh); |
2e60d768 BM |
382 | out: |
383 | sb_end_write(sb); | |
b3b94faa DT |
384 | return error; |
385 | } | |
386 | ||
b3b94faa DT |
387 | struct lfcc { |
388 | struct list_head list; | |
389 | struct gfs2_holder gh; | |
390 | }; | |
391 | ||
392 | /** | |
393 | * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all | |
394 | * journals are clean | |
395 | * @sdp: the file system | |
396 | * @state: the state to put the transaction lock into | |
397 | * @t_gh: the hold on the transaction lock | |
398 | * | |
399 | * Returns: errno | |
400 | */ | |
401 | ||
08bc2dbc | 402 | static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, |
24972557 | 403 | struct gfs2_holder *freeze_gh) |
b3b94faa | 404 | { |
5c676f6d | 405 | struct gfs2_inode *ip; |
b3b94faa DT |
406 | struct gfs2_jdesc *jd; |
407 | struct lfcc *lfcc; | |
408 | LIST_HEAD(list); | |
55167622 | 409 | struct gfs2_log_header_host lh; |
b3b94faa DT |
410 | int error; |
411 | ||
b3b94faa DT |
412 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
413 | lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); | |
414 | if (!lfcc) { | |
415 | error = -ENOMEM; | |
416 | goto out; | |
417 | } | |
feaa7bba SW |
418 | ip = GFS2_I(jd->jd_inode); |
419 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); | |
b3b94faa DT |
420 | if (error) { |
421 | kfree(lfcc); | |
422 | goto out; | |
423 | } | |
424 | list_add(&lfcc->list, &list); | |
425 | } | |
426 | ||
24972557 BM |
427 | error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE, |
428 | GL_NOCACHE, freeze_gh); | |
b3b94faa DT |
429 | |
430 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
431 | error = gfs2_jdesc_check(jd); | |
432 | if (error) | |
433 | break; | |
f4686c26 | 434 | error = gfs2_find_jhead(jd, &lh, false); |
b3b94faa DT |
435 | if (error) |
436 | break; | |
437 | if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
438 | error = -EBUSY; | |
439 | break; | |
440 | } | |
441 | } | |
442 | ||
443 | if (error) | |
24972557 | 444 | gfs2_glock_dq_uninit(freeze_gh); |
b3b94faa | 445 | |
a91ea69f | 446 | out: |
b3b94faa DT |
447 | while (!list_empty(&list)) { |
448 | lfcc = list_entry(list.next, struct lfcc, list); | |
449 | list_del(&lfcc->list); | |
450 | gfs2_glock_dq_uninit(&lfcc->gh); | |
451 | kfree(lfcc); | |
452 | } | |
b3b94faa DT |
453 | return error; |
454 | } | |
455 | ||
9eed04cd SW |
456 | void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) |
457 | { | |
458 | struct gfs2_dinode *str = buf; | |
459 | ||
460 | str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
461 | str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); | |
462 | str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); | |
463 | str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); | |
464 | str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); | |
465 | str->di_mode = cpu_to_be32(ip->i_inode.i_mode); | |
d0546426 EB |
466 | str->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode)); |
467 | str->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode)); | |
9eed04cd SW |
468 | str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); |
469 | str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); | |
470 | str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); | |
471 | str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); | |
472 | str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); | |
473 | str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); | |
474 | ||
475 | str->di_goal_meta = cpu_to_be64(ip->i_goal); | |
476 | str->di_goal_data = cpu_to_be64(ip->i_goal); | |
477 | str->di_generation = cpu_to_be64(ip->i_generation); | |
478 | ||
479 | str->di_flags = cpu_to_be32(ip->i_diskflags); | |
480 | str->di_height = cpu_to_be16(ip->i_height); | |
481 | str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && | |
482 | !(ip->i_diskflags & GFS2_DIF_EXHASH) ? | |
483 | GFS2_FORMAT_DE : 0); | |
484 | str->di_depth = cpu_to_be16(ip->i_depth); | |
485 | str->di_entries = cpu_to_be32(ip->i_entries); | |
486 | ||
487 | str->di_eattr = cpu_to_be64(ip->i_eattr); | |
488 | str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); | |
489 | str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); | |
490 | str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); | |
491 | } | |
9e6e0a12 SW |
492 | |
493 | /** | |
494 | * gfs2_write_inode - Make sure the inode is stable on the disk | |
495 | * @inode: The inode | |
1027efaa | 496 | * @wbc: The writeback control structure |
9e6e0a12 SW |
497 | * |
498 | * Returns: errno | |
499 | */ | |
500 | ||
a9185b41 | 501 | static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) |
9e6e0a12 SW |
502 | { |
503 | struct gfs2_inode *ip = GFS2_I(inode); | |
504 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
1027efaa | 505 | struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); |
de1414a6 | 506 | struct backing_dev_info *bdi = inode_to_bdi(metamapping->host); |
ab9bbda0 | 507 | int ret = 0; |
adbc3ddf | 508 | bool flush_all = (wbc->sync_mode == WB_SYNC_ALL || gfs2_is_jdata(ip)); |
ab9bbda0 | 509 | |
adbc3ddf | 510 | if (flush_all) |
c1696fb8 | 511 | gfs2_log_flush(GFS2_SB(inode), ip->i_gl, |
805c0907 BP |
512 | GFS2_LOG_HEAD_FLUSH_NORMAL | |
513 | GFS2_LFC_WRITE_INODE); | |
a88a341a | 514 | if (bdi->wb.dirty_exceeded) |
4667a0ec | 515 | gfs2_ail1_flush(sdp, wbc); |
1d4ec642 SW |
516 | else |
517 | filemap_fdatawrite(metamapping); | |
adbc3ddf | 518 | if (flush_all) |
1027efaa SW |
519 | ret = filemap_fdatawait(metamapping); |
520 | if (ret) | |
521 | mark_inode_dirty_sync(inode); | |
957a7acd AD |
522 | else { |
523 | spin_lock(&inode->i_lock); | |
524 | if (!(inode->i_flags & I_DIRTY)) | |
525 | gfs2_ordered_del_inode(ip); | |
526 | spin_unlock(&inode->i_lock); | |
527 | } | |
9e6e0a12 SW |
528 | return ret; |
529 | } | |
530 | ||
ab9bbda0 SW |
531 | /** |
532 | * gfs2_dirty_inode - check for atime updates | |
533 | * @inode: The inode in question | |
534 | * @flags: The type of dirty | |
535 | * | |
536 | * Unfortunately it can be called under any combination of inode | |
537 | * glock and transaction lock, so we have to check carefully. | |
538 | * | |
539 | * At the moment this deals only with atime - it should be possible | |
540 | * to expand that role in future, once a review of the locking has | |
541 | * been carried out. | |
542 | */ | |
543 | ||
544 | static void gfs2_dirty_inode(struct inode *inode, int flags) | |
545 | { | |
546 | struct gfs2_inode *ip = GFS2_I(inode); | |
547 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
548 | struct buffer_head *bh; | |
549 | struct gfs2_holder gh; | |
550 | int need_unlock = 0; | |
551 | int need_endtrans = 0; | |
552 | int ret; | |
553 | ||
0e11f644 | 554 | if (!(flags & I_DIRTY_INODE)) |
ab9bbda0 | 555 | return; |
eb43e660 | 556 | if (unlikely(gfs2_withdrawn(sdp))) |
0d1c7ae9 | 557 | return; |
ab9bbda0 SW |
558 | if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { |
559 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); | |
560 | if (ret) { | |
561 | fs_err(sdp, "dirty_inode: glock %d\n", ret); | |
562 | return; | |
563 | } | |
564 | need_unlock = 1; | |
3d162688 BM |
565 | } else if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) |
566 | return; | |
ab9bbda0 SW |
567 | |
568 | if (current->journal_info == NULL) { | |
569 | ret = gfs2_trans_begin(sdp, RES_DINODE, 0); | |
570 | if (ret) { | |
571 | fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); | |
572 | goto out; | |
573 | } | |
574 | need_endtrans = 1; | |
575 | } | |
576 | ||
577 | ret = gfs2_meta_inode_buffer(ip, &bh); | |
578 | if (ret == 0) { | |
350a9b0a | 579 | gfs2_trans_add_meta(ip->i_gl, bh); |
ab9bbda0 SW |
580 | gfs2_dinode_out(ip, bh->b_data); |
581 | brelse(bh); | |
582 | } | |
583 | ||
584 | if (need_endtrans) | |
585 | gfs2_trans_end(sdp); | |
586 | out: | |
587 | if (need_unlock) | |
588 | gfs2_glock_dq_uninit(&gh); | |
589 | } | |
590 | ||
9e6e0a12 SW |
591 | /** |
592 | * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one | |
593 | * @sdp: the filesystem | |
594 | * | |
595 | * Returns: errno | |
596 | */ | |
597 | ||
1f52aa08 | 598 | int gfs2_make_fs_ro(struct gfs2_sbd *sdp) |
9e6e0a12 | 599 | { |
2e60d768 | 600 | struct gfs2_holder freeze_gh; |
9e6e0a12 SW |
601 | int error; |
602 | ||
24972557 | 603 | error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, GL_NOCACHE, |
2e60d768 | 604 | &freeze_gh); |
eb43e660 | 605 | if (error && !gfs2_withdrawn(sdp)) |
24972557 BM |
606 | return error; |
607 | ||
1eb8d738 | 608 | flush_workqueue(gfs2_delete_workqueue); |
5b3a9f34 BP |
609 | if (sdp->sd_quotad_process) |
610 | kthread_stop(sdp->sd_quotad_process); | |
611 | sdp->sd_quotad_process = NULL; | |
612 | if (sdp->sd_logd_process) | |
613 | kthread_stop(sdp->sd_logd_process); | |
614 | sdp->sd_logd_process = NULL; | |
8ad151c2 | 615 | |
ceed1723 | 616 | gfs2_quota_sync(sdp->sd_vfs, 0); |
8c42d637 | 617 | gfs2_statfs_sync(sdp->sd_vfs, 0); |
9e6e0a12 | 618 | |
805c0907 BP |
619 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SHUTDOWN | |
620 | GFS2_LFC_MAKE_FS_RO); | |
2e60d768 | 621 | wait_event(sdp->sd_reserving_log_wait, atomic_read(&sdp->sd_reserving_log) == 0); |
24972557 | 622 | gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks); |
9e6e0a12 | 623 | |
6df9f9a2 | 624 | if (gfs2_holder_initialized(&freeze_gh)) |
2e60d768 | 625 | gfs2_glock_dq_uninit(&freeze_gh); |
9e6e0a12 SW |
626 | |
627 | gfs2_quota_cleanup(sdp); | |
628 | ||
629 | return error; | |
630 | } | |
631 | ||
9e6e0a12 SW |
632 | /** |
633 | * gfs2_put_super - Unmount the filesystem | |
634 | * @sb: The VFS superblock | |
635 | * | |
636 | */ | |
637 | ||
638 | static void gfs2_put_super(struct super_block *sb) | |
639 | { | |
640 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
641 | int error; | |
642 | struct gfs2_jdesc *jd; | |
643 | ||
9e6e0a12 SW |
644 | /* No more recovery requests */ |
645 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); | |
646 | smp_mb(); | |
647 | ||
648 | /* Wait on outstanding recovery */ | |
649 | restart: | |
650 | spin_lock(&sdp->sd_jindex_spin); | |
651 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
652 | if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) | |
653 | continue; | |
654 | spin_unlock(&sdp->sd_jindex_spin); | |
655 | wait_on_bit(&jd->jd_flags, JDF_RECOVERY, | |
74316201 | 656 | TASK_UNINTERRUPTIBLE); |
9e6e0a12 SW |
657 | goto restart; |
658 | } | |
659 | spin_unlock(&sdp->sd_jindex_spin); | |
660 | ||
bc98a42c | 661 | if (!sb_rdonly(sb)) { |
9e6e0a12 SW |
662 | error = gfs2_make_fs_ro(sdp); |
663 | if (error) | |
664 | gfs2_io_error(sdp); | |
665 | } | |
666 | /* At this point, we're through modifying the disk */ | |
667 | ||
668 | /* Release stuff */ | |
669 | ||
670 | iput(sdp->sd_jindex); | |
9e6e0a12 SW |
671 | iput(sdp->sd_statfs_inode); |
672 | iput(sdp->sd_rindex); | |
673 | iput(sdp->sd_quota_inode); | |
674 | ||
675 | gfs2_glock_put(sdp->sd_rename_gl); | |
24972557 | 676 | gfs2_glock_put(sdp->sd_freeze_gl); |
9e6e0a12 SW |
677 | |
678 | if (!sdp->sd_args.ar_spectator) { | |
679 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
680 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
9e6e0a12 SW |
681 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
682 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
9e6e0a12 SW |
683 | iput(sdp->sd_sc_inode); |
684 | iput(sdp->sd_qc_inode); | |
685 | } | |
686 | ||
687 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
688 | gfs2_clear_rgrpd(sdp); | |
689 | gfs2_jindex_free(sdp); | |
690 | /* Take apart glock structures and buffer lists */ | |
691 | gfs2_gl_hash_clear(sdp); | |
b2fb7dab | 692 | gfs2_delete_debugfs_file(sdp); |
9e6e0a12 SW |
693 | /* Unmount the locking protocol */ |
694 | gfs2_lm_unmount(sdp); | |
695 | ||
696 | /* At this point, we're through participating in the lockspace */ | |
697 | gfs2_sys_fs_del(sdp); | |
698 | } | |
699 | ||
9e6e0a12 SW |
700 | /** |
701 | * gfs2_sync_fs - sync the filesystem | |
702 | * @sb: the superblock | |
703 | * | |
704 | * Flushes the log to disk. | |
705 | */ | |
706 | ||
707 | static int gfs2_sync_fs(struct super_block *sb, int wait) | |
708 | { | |
1027efaa | 709 | struct gfs2_sbd *sdp = sb->s_fs_info; |
a1177825 JK |
710 | |
711 | gfs2_quota_sync(sb, -1); | |
942b0cdd | 712 | if (wait) |
805c0907 BP |
713 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL | |
714 | GFS2_LFC_SYNC_FS); | |
942b0cdd | 715 | return sdp->sd_log_error; |
9e6e0a12 SW |
716 | } |
717 | ||
2e60d768 BM |
718 | void gfs2_freeze_func(struct work_struct *work) |
719 | { | |
720 | int error; | |
721 | struct gfs2_holder freeze_gh; | |
722 | struct gfs2_sbd *sdp = container_of(work, struct gfs2_sbd, sd_freeze_work); | |
723 | struct super_block *sb = sdp->sd_vfs; | |
724 | ||
725 | atomic_inc(&sb->s_active); | |
726 | error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, | |
727 | &freeze_gh); | |
728 | if (error) { | |
f29e62ee | 729 | fs_info(sdp, "GFS2: couldn't get freeze lock : %d\n", error); |
2e60d768 | 730 | gfs2_assert_withdraw(sdp, 0); |
8f918219 | 731 | } else { |
2e60d768 BM |
732 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); |
733 | error = thaw_super(sb); | |
734 | if (error) { | |
f29e62ee BP |
735 | fs_info(sdp, "GFS2: couldn't thaw filesystem: %d\n", |
736 | error); | |
2e60d768 BM |
737 | gfs2_assert_withdraw(sdp, 0); |
738 | } | |
739 | if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) | |
740 | freeze_gh.gh_flags |= GL_NOCACHE; | |
741 | gfs2_glock_dq_uninit(&freeze_gh); | |
742 | } | |
743 | deactivate_super(sb); | |
8f918219 AD |
744 | clear_bit_unlock(SDF_FS_FROZEN, &sdp->sd_flags); |
745 | wake_up_bit(&sdp->sd_flags, SDF_FS_FROZEN); | |
2e60d768 BM |
746 | return; |
747 | } | |
748 | ||
9e6e0a12 SW |
749 | /** |
750 | * gfs2_freeze - prevent further writes to the filesystem | |
751 | * @sb: the VFS structure for the filesystem | |
752 | * | |
753 | */ | |
754 | ||
755 | static int gfs2_freeze(struct super_block *sb) | |
756 | { | |
757 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
2e60d768 | 758 | int error = 0; |
9e6e0a12 | 759 | |
2e60d768 BM |
760 | mutex_lock(&sdp->sd_freeze_mutex); |
761 | if (atomic_read(&sdp->sd_freeze_state) != SFS_UNFROZEN) | |
762 | goto out; | |
763 | ||
eb43e660 | 764 | if (gfs2_withdrawn(sdp)) { |
2e60d768 BM |
765 | error = -EINVAL; |
766 | goto out; | |
767 | } | |
9e6e0a12 SW |
768 | |
769 | for (;;) { | |
d564053f | 770 | error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh); |
9e6e0a12 SW |
771 | if (!error) |
772 | break; | |
773 | ||
55317f5b | 774 | if (error == -EBUSY) |
9e6e0a12 | 775 | fs_err(sdp, "waiting for recovery before freeze\n"); |
55317f5b | 776 | else |
9e6e0a12 | 777 | fs_err(sdp, "error freezing FS: %d\n", error); |
9e6e0a12 SW |
778 | |
779 | fs_err(sdp, "retrying...\n"); | |
780 | msleep(1000); | |
781 | } | |
8f918219 | 782 | set_bit(SDF_FS_FROZEN, &sdp->sd_flags); |
2e60d768 BM |
783 | out: |
784 | mutex_unlock(&sdp->sd_freeze_mutex); | |
785 | return error; | |
9e6e0a12 SW |
786 | } |
787 | ||
788 | /** | |
789 | * gfs2_unfreeze - reallow writes to the filesystem | |
790 | * @sb: the VFS structure for the filesystem | |
791 | * | |
792 | */ | |
793 | ||
794 | static int gfs2_unfreeze(struct super_block *sb) | |
795 | { | |
d564053f SW |
796 | struct gfs2_sbd *sdp = sb->s_fs_info; |
797 | ||
2e60d768 BM |
798 | mutex_lock(&sdp->sd_freeze_mutex); |
799 | if (atomic_read(&sdp->sd_freeze_state) != SFS_FROZEN || | |
6df9f9a2 | 800 | !gfs2_holder_initialized(&sdp->sd_freeze_gh)) { |
2e60d768 BM |
801 | mutex_unlock(&sdp->sd_freeze_mutex); |
802 | return 0; | |
803 | } | |
804 | ||
d564053f | 805 | gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); |
2e60d768 | 806 | mutex_unlock(&sdp->sd_freeze_mutex); |
8f918219 | 807 | return wait_on_bit(&sdp->sd_flags, SDF_FS_FROZEN, TASK_INTERRUPTIBLE); |
9e6e0a12 SW |
808 | } |
809 | ||
810 | /** | |
811 | * statfs_fill - fill in the sg for a given RG | |
812 | * @rgd: the RG | |
813 | * @sc: the sc structure | |
814 | * | |
815 | * Returns: 0 on success, -ESTALE if the LVB is invalid | |
816 | */ | |
817 | ||
818 | static int statfs_slow_fill(struct gfs2_rgrpd *rgd, | |
819 | struct gfs2_statfs_change_host *sc) | |
820 | { | |
821 | gfs2_rgrp_verify(rgd); | |
822 | sc->sc_total += rgd->rd_data; | |
823 | sc->sc_free += rgd->rd_free; | |
824 | sc->sc_dinodes += rgd->rd_dinodes; | |
825 | return 0; | |
826 | } | |
827 | ||
828 | /** | |
829 | * gfs2_statfs_slow - Stat a filesystem using asynchronous locking | |
830 | * @sdp: the filesystem | |
831 | * @sc: the sc info that will be returned | |
832 | * | |
833 | * Any error (other than a signal) will cause this routine to fall back | |
834 | * to the synchronous version. | |
835 | * | |
836 | * FIXME: This really shouldn't busy wait like this. | |
837 | * | |
838 | * Returns: errno | |
839 | */ | |
840 | ||
841 | static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
842 | { | |
9e6e0a12 SW |
843 | struct gfs2_rgrpd *rgd_next; |
844 | struct gfs2_holder *gha, *gh; | |
845 | unsigned int slots = 64; | |
846 | unsigned int x; | |
847 | int done; | |
848 | int error = 0, err; | |
849 | ||
850 | memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); | |
6da2ec56 | 851 | gha = kmalloc_array(slots, sizeof(struct gfs2_holder), GFP_KERNEL); |
9e6e0a12 SW |
852 | if (!gha) |
853 | return -ENOMEM; | |
6df9f9a2 AG |
854 | for (x = 0; x < slots; x++) |
855 | gfs2_holder_mark_uninitialized(gha + x); | |
9e6e0a12 | 856 | |
9e6e0a12 SW |
857 | rgd_next = gfs2_rgrpd_get_first(sdp); |
858 | ||
859 | for (;;) { | |
860 | done = 1; | |
861 | ||
862 | for (x = 0; x < slots; x++) { | |
863 | gh = gha + x; | |
864 | ||
6df9f9a2 | 865 | if (gfs2_holder_initialized(gh) && gfs2_glock_poll(gh)) { |
9e6e0a12 SW |
866 | err = gfs2_glock_wait(gh); |
867 | if (err) { | |
868 | gfs2_holder_uninit(gh); | |
869 | error = err; | |
870 | } else { | |
6f6597ba AG |
871 | if (!error) { |
872 | struct gfs2_rgrpd *rgd = | |
873 | gfs2_glock2rgrp(gh->gh_gl); | |
874 | ||
875 | error = statfs_slow_fill(rgd, sc); | |
876 | } | |
9e6e0a12 SW |
877 | gfs2_glock_dq_uninit(gh); |
878 | } | |
879 | } | |
880 | ||
6df9f9a2 | 881 | if (gfs2_holder_initialized(gh)) |
9e6e0a12 SW |
882 | done = 0; |
883 | else if (rgd_next && !error) { | |
884 | error = gfs2_glock_nq_init(rgd_next->rd_gl, | |
885 | LM_ST_SHARED, | |
886 | GL_ASYNC, | |
887 | gh); | |
888 | rgd_next = gfs2_rgrpd_get_next(rgd_next); | |
889 | done = 0; | |
890 | } | |
891 | ||
892 | if (signal_pending(current)) | |
893 | error = -ERESTARTSYS; | |
894 | } | |
895 | ||
896 | if (done) | |
897 | break; | |
898 | ||
899 | yield(); | |
900 | } | |
901 | ||
9e6e0a12 SW |
902 | kfree(gha); |
903 | return error; | |
904 | } | |
905 | ||
906 | /** | |
907 | * gfs2_statfs_i - Do a statfs | |
908 | * @sdp: the filesystem | |
909 | * @sg: the sg structure | |
910 | * | |
911 | * Returns: errno | |
912 | */ | |
913 | ||
914 | static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
915 | { | |
916 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
917 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
918 | ||
919 | spin_lock(&sdp->sd_statfs_spin); | |
920 | ||
921 | *sc = *m_sc; | |
922 | sc->sc_total += l_sc->sc_total; | |
923 | sc->sc_free += l_sc->sc_free; | |
924 | sc->sc_dinodes += l_sc->sc_dinodes; | |
925 | ||
926 | spin_unlock(&sdp->sd_statfs_spin); | |
927 | ||
928 | if (sc->sc_free < 0) | |
929 | sc->sc_free = 0; | |
930 | if (sc->sc_free > sc->sc_total) | |
931 | sc->sc_free = sc->sc_total; | |
932 | if (sc->sc_dinodes < 0) | |
933 | sc->sc_dinodes = 0; | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | /** | |
939 | * gfs2_statfs - Gather and return stats about the filesystem | |
940 | * @sb: The superblock | |
941 | * @statfsbuf: The buffer | |
942 | * | |
943 | * Returns: 0 on success or error code | |
944 | */ | |
945 | ||
946 | static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) | |
947 | { | |
fc64005c | 948 | struct super_block *sb = dentry->d_sb; |
9e6e0a12 SW |
949 | struct gfs2_sbd *sdp = sb->s_fs_info; |
950 | struct gfs2_statfs_change_host sc; | |
951 | int error; | |
952 | ||
8339ee54 SW |
953 | error = gfs2_rindex_update(sdp); |
954 | if (error) | |
955 | return error; | |
956 | ||
9e6e0a12 SW |
957 | if (gfs2_tune_get(sdp, gt_statfs_slow)) |
958 | error = gfs2_statfs_slow(sdp, &sc); | |
959 | else | |
960 | error = gfs2_statfs_i(sdp, &sc); | |
961 | ||
962 | if (error) | |
963 | return error; | |
964 | ||
965 | buf->f_type = GFS2_MAGIC; | |
966 | buf->f_bsize = sdp->sd_sb.sb_bsize; | |
967 | buf->f_blocks = sc.sc_total; | |
968 | buf->f_bfree = sc.sc_free; | |
969 | buf->f_bavail = sc.sc_free; | |
970 | buf->f_files = sc.sc_dinodes + sc.sc_free; | |
971 | buf->f_ffree = sc.sc_free; | |
972 | buf->f_namelen = GFS2_FNAMESIZE; | |
973 | ||
974 | return 0; | |
975 | } | |
976 | ||
9e6e0a12 SW |
977 | /** |
978 | * gfs2_drop_inode - Drop an inode (test for remote unlink) | |
979 | * @inode: The inode to drop | |
980 | * | |
61b91cfd | 981 | * If we've received a callback on an iopen lock then it's because a |
9e6e0a12 SW |
982 | * remote node tried to deallocate the inode but failed due to this node |
983 | * still having the inode open. Here we mark the link count zero | |
984 | * since we know that it must have reached zero if the GLF_DEMOTE flag | |
985 | * is set on the iopen glock. If we didn't do a disk read since the | |
986 | * remote node removed the final link then we might otherwise miss | |
987 | * this event. This check ensures that this node will deallocate the | |
988 | * inode's blocks, or alternatively pass the baton on to another | |
989 | * node for later deallocation. | |
990 | */ | |
991 | ||
45321ac5 | 992 | static int gfs2_drop_inode(struct inode *inode) |
9e6e0a12 SW |
993 | { |
994 | struct gfs2_inode *ip = GFS2_I(inode); | |
995 | ||
6df9f9a2 AG |
996 | if (!test_bit(GIF_FREE_VFS_INODE, &ip->i_flags) && |
997 | inode->i_nlink && | |
998 | gfs2_holder_initialized(&ip->i_iopen_gh)) { | |
9e6e0a12 | 999 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
6df9f9a2 | 1000 | if (test_bit(GLF_DEMOTE, &gl->gl_flags)) |
9e6e0a12 SW |
1001 | clear_nlink(inode); |
1002 | } | |
6a1c8f6d AG |
1003 | |
1004 | /* | |
1005 | * When under memory pressure when an inode's link count has dropped to | |
1006 | * zero, defer deleting the inode to the delete workqueue. This avoids | |
1007 | * calling into DLM under memory pressure, which can deadlock. | |
1008 | */ | |
1009 | if (!inode->i_nlink && | |
1010 | unlikely(current->flags & PF_MEMALLOC) && | |
1011 | gfs2_holder_initialized(&ip->i_iopen_gh)) { | |
1012 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; | |
1013 | ||
1014 | gfs2_glock_hold(gl); | |
1015 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) | |
1016 | gfs2_glock_queue_put(gl); | |
1017 | return false; | |
1018 | } | |
1019 | ||
45321ac5 | 1020 | return generic_drop_inode(inode); |
9e6e0a12 SW |
1021 | } |
1022 | ||
1023 | static int is_ancestor(const struct dentry *d1, const struct dentry *d2) | |
1024 | { | |
1025 | do { | |
1026 | if (d1 == d2) | |
1027 | return 1; | |
1028 | d1 = d1->d_parent; | |
1029 | } while (!IS_ROOT(d1)); | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | /** | |
1034 | * gfs2_show_options - Show mount options for /proc/mounts | |
1035 | * @s: seq_file structure | |
34c80b1d | 1036 | * @root: root of this (sub)tree |
9e6e0a12 SW |
1037 | * |
1038 | * Returns: 0 on success or error code | |
1039 | */ | |
1040 | ||
34c80b1d | 1041 | static int gfs2_show_options(struct seq_file *s, struct dentry *root) |
9e6e0a12 | 1042 | { |
34c80b1d | 1043 | struct gfs2_sbd *sdp = root->d_sb->s_fs_info; |
9e6e0a12 | 1044 | struct gfs2_args *args = &sdp->sd_args; |
3d3c10f2 | 1045 | int val; |
9e6e0a12 | 1046 | |
34c80b1d | 1047 | if (is_ancestor(root, sdp->sd_master_dir)) |
eaebdedc | 1048 | seq_puts(s, ",meta"); |
9e6e0a12 | 1049 | if (args->ar_lockproto[0]) |
a068acf2 | 1050 | seq_show_option(s, "lockproto", args->ar_lockproto); |
9e6e0a12 | 1051 | if (args->ar_locktable[0]) |
a068acf2 | 1052 | seq_show_option(s, "locktable", args->ar_locktable); |
9e6e0a12 | 1053 | if (args->ar_hostdata[0]) |
a068acf2 | 1054 | seq_show_option(s, "hostdata", args->ar_hostdata); |
9e6e0a12 | 1055 | if (args->ar_spectator) |
eaebdedc | 1056 | seq_puts(s, ",spectator"); |
9e6e0a12 | 1057 | if (args->ar_localflocks) |
eaebdedc | 1058 | seq_puts(s, ",localflocks"); |
9e6e0a12 | 1059 | if (args->ar_debug) |
eaebdedc | 1060 | seq_puts(s, ",debug"); |
9e6e0a12 | 1061 | if (args->ar_posix_acl) |
eaebdedc | 1062 | seq_puts(s, ",acl"); |
9e6e0a12 SW |
1063 | if (args->ar_quota != GFS2_QUOTA_DEFAULT) { |
1064 | char *state; | |
1065 | switch (args->ar_quota) { | |
1066 | case GFS2_QUOTA_OFF: | |
1067 | state = "off"; | |
1068 | break; | |
1069 | case GFS2_QUOTA_ACCOUNT: | |
1070 | state = "account"; | |
1071 | break; | |
1072 | case GFS2_QUOTA_ON: | |
1073 | state = "on"; | |
1074 | break; | |
1075 | default: | |
1076 | state = "unknown"; | |
1077 | break; | |
1078 | } | |
1079 | seq_printf(s, ",quota=%s", state); | |
1080 | } | |
1081 | if (args->ar_suiddir) | |
eaebdedc | 1082 | seq_puts(s, ",suiddir"); |
9e6e0a12 SW |
1083 | if (args->ar_data != GFS2_DATA_DEFAULT) { |
1084 | char *state; | |
1085 | switch (args->ar_data) { | |
1086 | case GFS2_DATA_WRITEBACK: | |
1087 | state = "writeback"; | |
1088 | break; | |
1089 | case GFS2_DATA_ORDERED: | |
1090 | state = "ordered"; | |
1091 | break; | |
1092 | default: | |
1093 | state = "unknown"; | |
1094 | break; | |
1095 | } | |
1096 | seq_printf(s, ",data=%s", state); | |
1097 | } | |
1098 | if (args->ar_discard) | |
eaebdedc | 1099 | seq_puts(s, ",discard"); |
5e687eac BM |
1100 | val = sdp->sd_tune.gt_logd_secs; |
1101 | if (val != 30) | |
3d3c10f2 BM |
1102 | seq_printf(s, ",commit=%d", val); |
1103 | val = sdp->sd_tune.gt_statfs_quantum; | |
1104 | if (val != 30) | |
1105 | seq_printf(s, ",statfs_quantum=%d", val); | |
2b9731e8 SW |
1106 | else if (sdp->sd_tune.gt_statfs_slow) |
1107 | seq_puts(s, ",statfs_quantum=0"); | |
3d3c10f2 BM |
1108 | val = sdp->sd_tune.gt_quota_quantum; |
1109 | if (val != 60) | |
1110 | seq_printf(s, ",quota_quantum=%d", val); | |
1111 | if (args->ar_statfs_percent) | |
1112 | seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); | |
d34843d0 BP |
1113 | if (args->ar_errors != GFS2_ERRORS_DEFAULT) { |
1114 | const char *state; | |
1115 | ||
1116 | switch (args->ar_errors) { | |
1117 | case GFS2_ERRORS_WITHDRAW: | |
1118 | state = "withdraw"; | |
1119 | break; | |
1120 | case GFS2_ERRORS_PANIC: | |
1121 | state = "panic"; | |
1122 | break; | |
1123 | default: | |
1124 | state = "unknown"; | |
1125 | break; | |
1126 | } | |
1127 | seq_printf(s, ",errors=%s", state); | |
1128 | } | |
cdcfde62 | 1129 | if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) |
eaebdedc | 1130 | seq_puts(s, ",nobarrier"); |
913a71d2 | 1131 | if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) |
eaebdedc | 1132 | seq_puts(s, ",demote_interface_used"); |
90306c41 | 1133 | if (args->ar_rgrplvb) |
eaebdedc | 1134 | seq_puts(s, ",rgrplvb"); |
471f3db2 BM |
1135 | if (args->ar_loccookie) |
1136 | seq_puts(s, ",loccookie"); | |
9e6e0a12 SW |
1137 | return 0; |
1138 | } | |
1139 | ||
f42ab085 SW |
1140 | static void gfs2_final_release_pages(struct gfs2_inode *ip) |
1141 | { | |
1142 | struct inode *inode = &ip->i_inode; | |
1143 | struct gfs2_glock *gl = ip->i_gl; | |
1144 | ||
1145 | truncate_inode_pages(gfs2_glock2aspace(ip->i_gl), 0); | |
1146 | truncate_inode_pages(&inode->i_data, 0); | |
1147 | ||
638803d4 | 1148 | if (atomic_read(&gl->gl_revokes) == 0) { |
f42ab085 SW |
1149 | clear_bit(GLF_LFLUSH, &gl->gl_flags); |
1150 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | static int gfs2_dinode_dealloc(struct gfs2_inode *ip) | |
1155 | { | |
1156 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); | |
f42ab085 | 1157 | struct gfs2_rgrpd *rgd; |
564e12b1 | 1158 | struct gfs2_holder gh; |
f42ab085 SW |
1159 | int error; |
1160 | ||
1161 | if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { | |
94fb763b | 1162 | gfs2_consist_inode(ip); |
f42ab085 SW |
1163 | return -EIO; |
1164 | } | |
1165 | ||
8e2e0047 BP |
1166 | error = gfs2_rindex_update(sdp); |
1167 | if (error) | |
1168 | return error; | |
f42ab085 | 1169 | |
f4108a60 | 1170 | error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
f42ab085 | 1171 | if (error) |
5407e242 | 1172 | return error; |
f42ab085 | 1173 | |
66fc061b | 1174 | rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); |
f42ab085 SW |
1175 | if (!rgd) { |
1176 | gfs2_consist_inode(ip); | |
1177 | error = -EIO; | |
8339ee54 | 1178 | goto out_qs; |
f42ab085 SW |
1179 | } |
1180 | ||
564e12b1 | 1181 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); |
f42ab085 | 1182 | if (error) |
8339ee54 | 1183 | goto out_qs; |
f42ab085 | 1184 | |
4667a0ec SW |
1185 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, |
1186 | sdp->sd_jdesc->jd_blocks); | |
f42ab085 SW |
1187 | if (error) |
1188 | goto out_rg_gunlock; | |
1189 | ||
1190 | gfs2_free_di(rgd, ip); | |
1191 | ||
1192 | gfs2_final_release_pages(ip); | |
1193 | ||
1194 | gfs2_trans_end(sdp); | |
1195 | ||
1196 | out_rg_gunlock: | |
564e12b1 | 1197 | gfs2_glock_dq_uninit(&gh); |
f42ab085 SW |
1198 | out_qs: |
1199 | gfs2_quota_unhold(ip); | |
f42ab085 SW |
1200 | return error; |
1201 | } | |
1202 | ||
71c1b213 AG |
1203 | /** |
1204 | * gfs2_glock_put_eventually | |
1205 | * @gl: The glock to put | |
1206 | * | |
1207 | * When under memory pressure, trigger a deferred glock put to make sure we | |
1208 | * won't call into DLM and deadlock. Otherwise, put the glock directly. | |
1209 | */ | |
1210 | ||
1211 | static void gfs2_glock_put_eventually(struct gfs2_glock *gl) | |
1212 | { | |
1213 | if (current->flags & PF_MEMALLOC) | |
1214 | gfs2_glock_queue_put(gl); | |
1215 | else | |
1216 | gfs2_glock_put(gl); | |
1217 | } | |
1218 | ||
380f7c65 SW |
1219 | /** |
1220 | * gfs2_evict_inode - Remove an inode from cache | |
1221 | * @inode: The inode to evict | |
1222 | * | |
1223 | * There are three cases to consider: | |
1224 | * 1. i_nlink == 0, we are final opener (and must deallocate) | |
1225 | * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) | |
1226 | * 3. i_nlink > 0 | |
1227 | * | |
1228 | * If the fs is read only, then we have to treat all cases as per #3 | |
1229 | * since we are unable to do any deallocation. The inode will be | |
1230 | * deallocated by the next read/write node to attempt an allocation | |
1231 | * in the same resource group | |
1232 | * | |
9e6e0a12 SW |
1233 | * We have to (at the moment) hold the inodes main lock to cover |
1234 | * the gap between unlocking the shared lock on the iopen lock and | |
1235 | * taking the exclusive lock. I'd rather do a shared -> exclusive | |
1236 | * conversion on the iopen lock, but we can change that later. This | |
1237 | * is safe, just less efficient. | |
1238 | */ | |
1239 | ||
d5c1515c | 1240 | static void gfs2_evict_inode(struct inode *inode) |
9e6e0a12 | 1241 | { |
001e8e8d SW |
1242 | struct super_block *sb = inode->i_sb; |
1243 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
9e6e0a12 SW |
1244 | struct gfs2_inode *ip = GFS2_I(inode); |
1245 | struct gfs2_holder gh; | |
ee530bea | 1246 | struct address_space *metamapping; |
9e6e0a12 SW |
1247 | int error; |
1248 | ||
05978803 AD |
1249 | if (test_bit(GIF_FREE_VFS_INODE, &ip->i_flags)) { |
1250 | clear_inode(inode); | |
1251 | return; | |
1252 | } | |
1253 | ||
bc98a42c | 1254 | if (inode->i_nlink || sb_rdonly(sb)) |
d5c1515c AV |
1255 | goto out; |
1256 | ||
e0b62e21 AG |
1257 | if (test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { |
1258 | BUG_ON(!gfs2_glock_is_locked_by_me(ip->i_gl)); | |
1259 | gfs2_holder_mark_uninitialized(&gh); | |
1260 | goto alloc_failed; | |
1261 | } | |
1262 | ||
6a1c8f6d AG |
1263 | /* Deletes should never happen under memory pressure anymore. */ |
1264 | if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) | |
1265 | goto out; | |
1266 | ||
44ad37d6 BP |
1267 | /* Must not read inode block until block type has been verified */ |
1268 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); | |
9e6e0a12 | 1269 | if (unlikely(error)) { |
240c6235 | 1270 | glock_clear_object(ip->i_iopen_gh.gh_gl, ip); |
a6a4d98b | 1271 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; |
d4da3198 | 1272 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); |
9e6e0a12 SW |
1273 | goto out; |
1274 | } | |
1275 | ||
e0b62e21 AG |
1276 | error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); |
1277 | if (error) | |
1278 | goto out_truncate; | |
acf7e244 | 1279 | |
44ad37d6 BP |
1280 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
1281 | error = gfs2_inode_refresh(ip); | |
1282 | if (error) | |
1283 | goto out_truncate; | |
1284 | } | |
1285 | ||
71c1b213 AG |
1286 | /* |
1287 | * The inode may have been recreated in the meantime. | |
1288 | */ | |
1289 | if (inode->i_nlink) | |
1290 | goto out_truncate; | |
1291 | ||
e0b62e21 | 1292 | alloc_failed: |
6df9f9a2 | 1293 | if (gfs2_holder_initialized(&ip->i_iopen_gh) && |
7508abc4 BP |
1294 | test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { |
1295 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; | |
1296 | gfs2_glock_dq_wait(&ip->i_iopen_gh); | |
1297 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, | |
1298 | &ip->i_iopen_gh); | |
1299 | error = gfs2_glock_nq(&ip->i_iopen_gh); | |
1300 | if (error) | |
1301 | goto out_truncate; | |
1302 | } | |
9e6e0a12 SW |
1303 | |
1304 | if (S_ISDIR(inode->i_mode) && | |
1305 | (ip->i_diskflags & GFS2_DIF_EXHASH)) { | |
1306 | error = gfs2_dir_exhash_dealloc(ip); | |
1307 | if (error) | |
1308 | goto out_unlock; | |
1309 | } | |
1310 | ||
1311 | if (ip->i_eattr) { | |
1312 | error = gfs2_ea_dealloc(ip); | |
1313 | if (error) | |
1314 | goto out_unlock; | |
1315 | } | |
1316 | ||
1317 | if (!gfs2_is_stuffed(ip)) { | |
1318 | error = gfs2_file_dealloc(ip); | |
1319 | if (error) | |
1320 | goto out_unlock; | |
1321 | } | |
1322 | ||
240c6235 BP |
1323 | /* We're about to clear the bitmap for the dinode, but as soon as we |
1324 | do, gfs2_create_inode can create another inode at the same block | |
1325 | location and try to set gl_object again. We clear gl_object here so | |
1326 | that subsequent inode creates don't see an old gl_object. */ | |
1327 | glock_clear_object(ip->i_gl, ip); | |
9e6e0a12 | 1328 | error = gfs2_dinode_dealloc(ip); |
f42ab085 | 1329 | goto out_unlock; |
9e6e0a12 SW |
1330 | |
1331 | out_truncate: | |
805c0907 BP |
1332 | gfs2_log_flush(sdp, ip->i_gl, GFS2_LOG_HEAD_FLUSH_NORMAL | |
1333 | GFS2_LFC_EVICT_INODE); | |
ee530bea | 1334 | metamapping = gfs2_glock2aspace(ip->i_gl); |
2216db70 | 1335 | if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { |
2216db70 BM |
1336 | filemap_fdatawrite(metamapping); |
1337 | filemap_fdatawait(metamapping); | |
1338 | } | |
40ac218f | 1339 | write_inode_now(inode, 1); |
b5b24d7a | 1340 | gfs2_ail_flush(ip->i_gl, 0); |
40ac218f | 1341 | |
9e6e0a12 SW |
1342 | error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); |
1343 | if (error) | |
1344 | goto out_unlock; | |
380f7c65 SW |
1345 | /* Needs to be done before glock release & also in a transaction */ |
1346 | truncate_inode_pages(&inode->i_data, 0); | |
ee530bea | 1347 | truncate_inode_pages(metamapping, 0); |
9e6e0a12 SW |
1348 | gfs2_trans_end(sdp); |
1349 | ||
1350 | out_unlock: | |
a097dc7e BP |
1351 | if (gfs2_rs_active(&ip->i_res)) |
1352 | gfs2_rs_deltree(&ip->i_res); | |
8e2e0047 | 1353 | |
6df9f9a2 | 1354 | if (gfs2_holder_initialized(&ip->i_iopen_gh)) { |
240c6235 | 1355 | glock_clear_object(ip->i_iopen_gh.gh_gl, ip); |
7508abc4 BP |
1356 | if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { |
1357 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; | |
d4da3198 | 1358 | gfs2_glock_dq(&ip->i_iopen_gh); |
7508abc4 BP |
1359 | } |
1360 | gfs2_holder_uninit(&ip->i_iopen_gh); | |
a6a4d98b | 1361 | } |
240c6235 BP |
1362 | if (gfs2_holder_initialized(&gh)) { |
1363 | glock_clear_object(ip->i_gl, ip); | |
e0b62e21 | 1364 | gfs2_glock_dq_uninit(&gh); |
240c6235 | 1365 | } |
9e6e0a12 | 1366 | if (error && error != GLR_TRYFAILED && error != -EROFS) |
d5c1515c | 1367 | fs_warn(sdp, "gfs2_evict_inode: %d\n", error); |
9e6e0a12 | 1368 | out: |
91b0abe3 | 1369 | truncate_inode_pages_final(&inode->i_data); |
b54e9a0b | 1370 | gfs2_rsqa_delete(ip, NULL); |
45138990 | 1371 | gfs2_ordered_del_inode(ip); |
dbd5768f | 1372 | clear_inode(inode); |
17d539f0 | 1373 | gfs2_dir_hash_inval(ip); |
df3d87bd | 1374 | glock_clear_object(ip->i_gl, ip); |
4fd1a579 | 1375 | wait_on_bit_io(&ip->i_flags, GIF_GLOP_PENDING, TASK_UNINTERRUPTIBLE); |
29687a2a | 1376 | gfs2_glock_add_to_lru(ip->i_gl); |
71c1b213 | 1377 | gfs2_glock_put_eventually(ip->i_gl); |
d5c1515c | 1378 | ip->i_gl = NULL; |
6df9f9a2 | 1379 | if (gfs2_holder_initialized(&ip->i_iopen_gh)) { |
71c1b213 AG |
1380 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
1381 | ||
1382 | glock_clear_object(gl, ip); | |
a6a4d98b | 1383 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; |
71c1b213 | 1384 | gfs2_glock_hold(gl); |
d4da3198 | 1385 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); |
71c1b213 | 1386 | gfs2_glock_put_eventually(gl); |
d5c1515c | 1387 | } |
9e6e0a12 SW |
1388 | } |
1389 | ||
1390 | static struct inode *gfs2_alloc_inode(struct super_block *sb) | |
1391 | { | |
1392 | struct gfs2_inode *ip; | |
1393 | ||
1394 | ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); | |
d4031259 AG |
1395 | if (!ip) |
1396 | return NULL; | |
1397 | ip->i_flags = 0; | |
1398 | ip->i_gl = NULL; | |
1399 | memset(&ip->i_res, 0, sizeof(ip->i_res)); | |
1400 | RB_CLEAR_NODE(&ip->i_res.rs_node); | |
1401 | ip->i_rahead = 0; | |
9e6e0a12 SW |
1402 | return &ip->i_inode; |
1403 | } | |
1404 | ||
784494e1 | 1405 | static void gfs2_free_inode(struct inode *inode) |
9e6e0a12 | 1406 | { |
784494e1 | 1407 | kmem_cache_free(gfs2_inode_cachep, GFS2_I(inode)); |
fa0d7e3d NP |
1408 | } |
1409 | ||
9e6e0a12 SW |
1410 | const struct super_operations gfs2_super_ops = { |
1411 | .alloc_inode = gfs2_alloc_inode, | |
784494e1 | 1412 | .free_inode = gfs2_free_inode, |
9e6e0a12 | 1413 | .write_inode = gfs2_write_inode, |
ab9bbda0 | 1414 | .dirty_inode = gfs2_dirty_inode, |
d5c1515c | 1415 | .evict_inode = gfs2_evict_inode, |
9e6e0a12 | 1416 | .put_super = gfs2_put_super, |
9e6e0a12 | 1417 | .sync_fs = gfs2_sync_fs, |
2e60d768 BM |
1418 | .freeze_super = gfs2_freeze, |
1419 | .thaw_super = gfs2_unfreeze, | |
9e6e0a12 | 1420 | .statfs = gfs2_statfs, |
9e6e0a12 SW |
1421 | .drop_inode = gfs2_drop_inode, |
1422 | .show_options = gfs2_show_options, | |
1423 | }; | |
1424 |