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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 | |
53dbc27e BP |
47 | enum dinode_demise { |
48 | SHOULD_DELETE_DINODE, | |
49 | SHOULD_NOT_DELETE_DINODE, | |
50 | SHOULD_DEFER_EVICTION, | |
51 | }; | |
52 | ||
fefc03bf SW |
53 | /** |
54 | * gfs2_jindex_free - Clear all the journal index information | |
55 | * @sdp: The GFS2 superblock | |
56 | * | |
57 | */ | |
58 | ||
59 | void gfs2_jindex_free(struct gfs2_sbd *sdp) | |
60 | { | |
b50f227b | 61 | struct list_head list; |
fefc03bf | 62 | struct gfs2_jdesc *jd; |
fefc03bf SW |
63 | |
64 | spin_lock(&sdp->sd_jindex_spin); | |
65 | list_add(&list, &sdp->sd_jindex_list); | |
66 | list_del_init(&sdp->sd_jindex_list); | |
67 | sdp->sd_journals = 0; | |
68 | spin_unlock(&sdp->sd_jindex_spin); | |
69 | ||
601ef0d5 | 70 | sdp->sd_jdesc = NULL; |
fefc03bf | 71 | while (!list_empty(&list)) { |
969183bc | 72 | jd = list_first_entry(&list, struct gfs2_jdesc, jd_list); |
b50f227b | 73 | gfs2_free_journal_extents(jd); |
fefc03bf SW |
74 | list_del(&jd->jd_list); |
75 | iput(jd->jd_inode); | |
601ef0d5 | 76 | jd->jd_inode = NULL; |
fefc03bf SW |
77 | kfree(jd); |
78 | } | |
79 | } | |
80 | ||
b3b94faa DT |
81 | static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) |
82 | { | |
83 | struct gfs2_jdesc *jd; | |
b3b94faa DT |
84 | |
85 | list_for_each_entry(jd, head, jd_list) { | |
736b2f77 AG |
86 | if (jd->jd_jid == jid) |
87 | return jd; | |
b3b94faa | 88 | } |
736b2f77 | 89 | return NULL; |
b3b94faa DT |
90 | } |
91 | ||
92 | struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) | |
93 | { | |
94 | struct gfs2_jdesc *jd; | |
95 | ||
96 | spin_lock(&sdp->sd_jindex_spin); | |
97 | jd = jdesc_find_i(&sdp->sd_jindex_list, jid); | |
98 | spin_unlock(&sdp->sd_jindex_spin); | |
99 | ||
100 | return jd; | |
101 | } | |
102 | ||
b3b94faa DT |
103 | int gfs2_jdesc_check(struct gfs2_jdesc *jd) |
104 | { | |
feaa7bba SW |
105 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
106 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
a2e0f799 | 107 | u64 size = i_size_read(jd->jd_inode); |
b3b94faa | 108 | |
47a9a527 | 109 | if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, BIT(30))) |
b3b94faa | 110 | return -EIO; |
b3b94faa | 111 | |
a2e0f799 SW |
112 | jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; |
113 | ||
114 | if (gfs2_write_alloc_required(ip, 0, size)) { | |
b3b94faa | 115 | gfs2_consist_inode(ip); |
461cb419 | 116 | return -EIO; |
b3b94faa DT |
117 | } |
118 | ||
461cb419 | 119 | return 0; |
b3b94faa DT |
120 | } |
121 | ||
8ad151c2 SW |
122 | static int init_threads(struct gfs2_sbd *sdp) |
123 | { | |
124 | struct task_struct *p; | |
125 | int error = 0; | |
126 | ||
127 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
128 | if (IS_ERR(p)) { | |
129 | error = PTR_ERR(p); | |
130 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
131 | return error; | |
132 | } | |
133 | sdp->sd_logd_process = p; | |
134 | ||
135 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
136 | if (IS_ERR(p)) { | |
137 | error = PTR_ERR(p); | |
138 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
139 | goto fail; | |
140 | } | |
141 | sdp->sd_quotad_process = p; | |
142 | return 0; | |
143 | ||
144 | fail: | |
145 | kthread_stop(sdp->sd_logd_process); | |
5b3a9f34 | 146 | sdp->sd_logd_process = NULL; |
8ad151c2 SW |
147 | return error; |
148 | } | |
149 | ||
b3b94faa DT |
150 | /** |
151 | * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one | |
152 | * @sdp: the filesystem | |
153 | * | |
154 | * Returns: errno | |
155 | */ | |
156 | ||
157 | int gfs2_make_fs_rw(struct gfs2_sbd *sdp) | |
158 | { | |
feaa7bba | 159 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 160 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 161 | struct gfs2_log_header_host head; |
b3b94faa DT |
162 | int error; |
163 | ||
8ad151c2 | 164 | error = init_threads(sdp); |
62dd0f98 AP |
165 | if (error) { |
166 | gfs2_withdraw_delayed(sdp); | |
b3b94faa | 167 | return error; |
62dd0f98 | 168 | } |
b3b94faa | 169 | |
1a14d3a6 | 170 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
601ef0d5 BP |
171 | if (gfs2_withdrawn(sdp)) { |
172 | error = -EIO; | |
173 | goto fail; | |
174 | } | |
b3b94faa | 175 | |
f4686c26 | 176 | error = gfs2_find_jhead(sdp->sd_jdesc, &head, false); |
601ef0d5 | 177 | if (error || gfs2_withdrawn(sdp)) |
b3b94faa DT |
178 | goto fail; |
179 | ||
180 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
181 | gfs2_consist(sdp); | |
182 | error = -EIO; | |
183 | goto fail; | |
184 | } | |
185 | ||
186 | /* Initialize some head of the log stuff */ | |
187 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
188 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
189 | ||
b3b94faa | 190 | error = gfs2_quota_init(sdp); |
601ef0d5 | 191 | if (error || gfs2_withdrawn(sdp)) |
a91ea69f | 192 | goto fail; |
b3b94faa DT |
193 | |
194 | set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); | |
195 | ||
b3b94faa DT |
196 | return 0; |
197 | ||
a91ea69f | 198 | fail: |
5b3a9f34 BP |
199 | if (sdp->sd_quotad_process) |
200 | kthread_stop(sdp->sd_quotad_process); | |
201 | sdp->sd_quotad_process = NULL; | |
202 | if (sdp->sd_logd_process) | |
203 | kthread_stop(sdp->sd_logd_process); | |
204 | sdp->sd_logd_process = NULL; | |
b3b94faa DT |
205 | return error; |
206 | } | |
207 | ||
1946f70a | 208 | void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) |
bb8d8a6f SW |
209 | { |
210 | const struct gfs2_statfs_change *str = buf; | |
211 | ||
212 | sc->sc_total = be64_to_cpu(str->sc_total); | |
213 | sc->sc_free = be64_to_cpu(str->sc_free); | |
214 | sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); | |
215 | } | |
216 | ||
73092698 | 217 | void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) |
bb8d8a6f SW |
218 | { |
219 | struct gfs2_statfs_change *str = buf; | |
220 | ||
221 | str->sc_total = cpu_to_be64(sc->sc_total); | |
222 | str->sc_free = cpu_to_be64(sc->sc_free); | |
223 | str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); | |
224 | } | |
225 | ||
b3b94faa DT |
226 | int gfs2_statfs_init(struct gfs2_sbd *sdp) |
227 | { | |
feaa7bba | 228 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
bd209cc0 | 229 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
feaa7bba | 230 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 231 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
b3b94faa DT |
232 | struct buffer_head *m_bh, *l_bh; |
233 | struct gfs2_holder gh; | |
234 | int error; | |
235 | ||
236 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
237 | &gh); | |
238 | if (error) | |
239 | return error; | |
240 | ||
241 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
242 | if (error) | |
243 | goto out; | |
244 | ||
245 | if (sdp->sd_args.ar_spectator) { | |
246 | spin_lock(&sdp->sd_statfs_spin); | |
247 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
248 | sizeof(struct gfs2_dinode)); | |
249 | spin_unlock(&sdp->sd_statfs_spin); | |
250 | } else { | |
251 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
252 | if (error) | |
253 | goto out_m_bh; | |
254 | ||
255 | spin_lock(&sdp->sd_statfs_spin); | |
256 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
257 | sizeof(struct gfs2_dinode)); | |
258 | gfs2_statfs_change_in(l_sc, l_bh->b_data + | |
259 | sizeof(struct gfs2_dinode)); | |
260 | spin_unlock(&sdp->sd_statfs_spin); | |
261 | ||
262 | brelse(l_bh); | |
263 | } | |
264 | ||
a91ea69f | 265 | out_m_bh: |
b3b94faa | 266 | brelse(m_bh); |
a91ea69f | 267 | out: |
b3b94faa | 268 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
269 | return 0; |
270 | } | |
271 | ||
cd915493 SW |
272 | void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, |
273 | s64 dinodes) | |
b3b94faa | 274 | { |
feaa7bba | 275 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 276 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
3d3c10f2 | 277 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
b3b94faa | 278 | struct buffer_head *l_bh; |
c14f5735 BM |
279 | s64 x, y; |
280 | int need_sync = 0; | |
b3b94faa DT |
281 | int error; |
282 | ||
283 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
284 | if (error) | |
285 | return; | |
286 | ||
350a9b0a | 287 | gfs2_trans_add_meta(l_ip->i_gl, l_bh); |
b3b94faa DT |
288 | |
289 | spin_lock(&sdp->sd_statfs_spin); | |
290 | l_sc->sc_total += total; | |
291 | l_sc->sc_free += free; | |
292 | l_sc->sc_dinodes += dinodes; | |
907b9bce | 293 | gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); |
c14f5735 BM |
294 | if (sdp->sd_args.ar_statfs_percent) { |
295 | x = 100 * l_sc->sc_free; | |
296 | y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; | |
297 | if (x >= y || x <= -y) | |
298 | need_sync = 1; | |
299 | } | |
b3b94faa DT |
300 | spin_unlock(&sdp->sd_statfs_spin); |
301 | ||
302 | brelse(l_bh); | |
c14f5735 | 303 | if (need_sync) |
3d3c10f2 | 304 | gfs2_wake_up_statfs(sdp); |
b3b94faa DT |
305 | } |
306 | ||
1946f70a BM |
307 | void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, |
308 | struct buffer_head *l_bh) | |
309 | { | |
310 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); | |
311 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
312 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
313 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
314 | ||
350a9b0a | 315 | gfs2_trans_add_meta(l_ip->i_gl, l_bh); |
901c6c66 | 316 | gfs2_trans_add_meta(m_ip->i_gl, m_bh); |
1946f70a BM |
317 | |
318 | spin_lock(&sdp->sd_statfs_spin); | |
319 | m_sc->sc_total += l_sc->sc_total; | |
320 | m_sc->sc_free += l_sc->sc_free; | |
321 | m_sc->sc_dinodes += l_sc->sc_dinodes; | |
322 | memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); | |
323 | memset(l_bh->b_data + sizeof(struct gfs2_dinode), | |
324 | 0, sizeof(struct gfs2_statfs_change)); | |
1946f70a | 325 | gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); |
901c6c66 | 326 | spin_unlock(&sdp->sd_statfs_spin); |
1946f70a BM |
327 | } |
328 | ||
8c42d637 | 329 | int gfs2_statfs_sync(struct super_block *sb, int type) |
b3b94faa | 330 | { |
8c42d637 | 331 | struct gfs2_sbd *sdp = sb->s_fs_info; |
feaa7bba SW |
332 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
333 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
bd209cc0 AV |
334 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
335 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
b3b94faa DT |
336 | struct gfs2_holder gh; |
337 | struct buffer_head *m_bh, *l_bh; | |
338 | int error; | |
339 | ||
340 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
341 | &gh); | |
342 | if (error) | |
2e60d768 | 343 | goto out; |
b3b94faa DT |
344 | |
345 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
346 | if (error) | |
2e60d768 | 347 | goto out_unlock; |
b3b94faa DT |
348 | |
349 | spin_lock(&sdp->sd_statfs_spin); | |
350 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
907b9bce | 351 | sizeof(struct gfs2_dinode)); |
b3b94faa DT |
352 | if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { |
353 | spin_unlock(&sdp->sd_statfs_spin); | |
354 | goto out_bh; | |
355 | } | |
356 | spin_unlock(&sdp->sd_statfs_spin); | |
357 | ||
358 | error = gfs2_meta_inode_buffer(l_ip, &l_bh); | |
359 | if (error) | |
360 | goto out_bh; | |
361 | ||
362 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); | |
363 | if (error) | |
364 | goto out_bh2; | |
365 | ||
1946f70a | 366 | update_statfs(sdp, m_bh, l_bh); |
3d3c10f2 | 367 | sdp->sd_statfs_force_sync = 0; |
b3b94faa DT |
368 | |
369 | gfs2_trans_end(sdp); | |
370 | ||
a91ea69f | 371 | out_bh2: |
b3b94faa | 372 | brelse(l_bh); |
a91ea69f | 373 | out_bh: |
b3b94faa | 374 | brelse(m_bh); |
2e60d768 | 375 | out_unlock: |
b3b94faa | 376 | gfs2_glock_dq_uninit(&gh); |
2e60d768 | 377 | out: |
b3b94faa DT |
378 | return error; |
379 | } | |
380 | ||
b3b94faa DT |
381 | struct lfcc { |
382 | struct list_head list; | |
383 | struct gfs2_holder gh; | |
384 | }; | |
385 | ||
386 | /** | |
387 | * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all | |
388 | * journals are clean | |
389 | * @sdp: the file system | |
b3b94faa DT |
390 | * |
391 | * Returns: errno | |
392 | */ | |
393 | ||
52b1cdcb | 394 | static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp) |
b3b94faa | 395 | { |
5c676f6d | 396 | struct gfs2_inode *ip; |
b3b94faa DT |
397 | struct gfs2_jdesc *jd; |
398 | struct lfcc *lfcc; | |
399 | LIST_HEAD(list); | |
55167622 | 400 | struct gfs2_log_header_host lh; |
b3b94faa DT |
401 | int error; |
402 | ||
b3b94faa DT |
403 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
404 | lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); | |
405 | if (!lfcc) { | |
406 | error = -ENOMEM; | |
407 | goto out; | |
408 | } | |
feaa7bba SW |
409 | ip = GFS2_I(jd->jd_inode); |
410 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); | |
b3b94faa DT |
411 | if (error) { |
412 | kfree(lfcc); | |
413 | goto out; | |
414 | } | |
415 | list_add(&lfcc->list, &list); | |
416 | } | |
417 | ||
24972557 | 418 | error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE, |
c860f8ff | 419 | LM_FLAG_NOEXP, &sdp->sd_freeze_gh); |
52b1cdcb BP |
420 | if (error) |
421 | goto out; | |
b3b94faa DT |
422 | |
423 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
424 | error = gfs2_jdesc_check(jd); | |
425 | if (error) | |
426 | break; | |
f4686c26 | 427 | error = gfs2_find_jhead(jd, &lh, false); |
b3b94faa DT |
428 | if (error) |
429 | break; | |
430 | if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
431 | error = -EBUSY; | |
432 | break; | |
433 | } | |
434 | } | |
435 | ||
436 | if (error) | |
c77b52c0 | 437 | gfs2_freeze_unlock(&sdp->sd_freeze_gh); |
b3b94faa | 438 | |
a91ea69f | 439 | out: |
b3b94faa | 440 | while (!list_empty(&list)) { |
969183bc | 441 | lfcc = list_first_entry(&list, struct lfcc, list); |
b3b94faa DT |
442 | list_del(&lfcc->list); |
443 | gfs2_glock_dq_uninit(&lfcc->gh); | |
444 | kfree(lfcc); | |
445 | } | |
b3b94faa DT |
446 | return error; |
447 | } | |
448 | ||
9eed04cd SW |
449 | void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) |
450 | { | |
451 | struct gfs2_dinode *str = buf; | |
452 | ||
453 | str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
454 | str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); | |
455 | str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); | |
456 | str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); | |
457 | str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); | |
458 | str->di_mode = cpu_to_be32(ip->i_inode.i_mode); | |
d0546426 EB |
459 | str->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode)); |
460 | str->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode)); | |
9eed04cd SW |
461 | str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); |
462 | str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); | |
463 | str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); | |
464 | str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); | |
465 | str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); | |
466 | str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); | |
467 | ||
468 | str->di_goal_meta = cpu_to_be64(ip->i_goal); | |
469 | str->di_goal_data = cpu_to_be64(ip->i_goal); | |
470 | str->di_generation = cpu_to_be64(ip->i_generation); | |
471 | ||
472 | str->di_flags = cpu_to_be32(ip->i_diskflags); | |
473 | str->di_height = cpu_to_be16(ip->i_height); | |
474 | str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && | |
475 | !(ip->i_diskflags & GFS2_DIF_EXHASH) ? | |
476 | GFS2_FORMAT_DE : 0); | |
477 | str->di_depth = cpu_to_be16(ip->i_depth); | |
478 | str->di_entries = cpu_to_be32(ip->i_entries); | |
479 | ||
480 | str->di_eattr = cpu_to_be64(ip->i_eattr); | |
481 | str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); | |
482 | str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); | |
483 | str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); | |
484 | } | |
9e6e0a12 SW |
485 | |
486 | /** | |
487 | * gfs2_write_inode - Make sure the inode is stable on the disk | |
488 | * @inode: The inode | |
1027efaa | 489 | * @wbc: The writeback control structure |
9e6e0a12 SW |
490 | * |
491 | * Returns: errno | |
492 | */ | |
493 | ||
a9185b41 | 494 | static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) |
9e6e0a12 SW |
495 | { |
496 | struct gfs2_inode *ip = GFS2_I(inode); | |
497 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
1027efaa | 498 | struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); |
de1414a6 | 499 | struct backing_dev_info *bdi = inode_to_bdi(metamapping->host); |
ab9bbda0 | 500 | int ret = 0; |
adbc3ddf | 501 | bool flush_all = (wbc->sync_mode == WB_SYNC_ALL || gfs2_is_jdata(ip)); |
ab9bbda0 | 502 | |
adbc3ddf | 503 | if (flush_all) |
c1696fb8 | 504 | gfs2_log_flush(GFS2_SB(inode), ip->i_gl, |
805c0907 BP |
505 | GFS2_LOG_HEAD_FLUSH_NORMAL | |
506 | GFS2_LFC_WRITE_INODE); | |
a88a341a | 507 | if (bdi->wb.dirty_exceeded) |
4667a0ec | 508 | gfs2_ail1_flush(sdp, wbc); |
1d4ec642 SW |
509 | else |
510 | filemap_fdatawrite(metamapping); | |
adbc3ddf | 511 | if (flush_all) |
1027efaa SW |
512 | ret = filemap_fdatawait(metamapping); |
513 | if (ret) | |
514 | mark_inode_dirty_sync(inode); | |
957a7acd AD |
515 | else { |
516 | spin_lock(&inode->i_lock); | |
517 | if (!(inode->i_flags & I_DIRTY)) | |
518 | gfs2_ordered_del_inode(ip); | |
519 | spin_unlock(&inode->i_lock); | |
520 | } | |
9e6e0a12 SW |
521 | return ret; |
522 | } | |
523 | ||
ab9bbda0 SW |
524 | /** |
525 | * gfs2_dirty_inode - check for atime updates | |
526 | * @inode: The inode in question | |
527 | * @flags: The type of dirty | |
528 | * | |
529 | * Unfortunately it can be called under any combination of inode | |
530 | * glock and transaction lock, so we have to check carefully. | |
531 | * | |
532 | * At the moment this deals only with atime - it should be possible | |
533 | * to expand that role in future, once a review of the locking has | |
534 | * been carried out. | |
535 | */ | |
536 | ||
537 | static void gfs2_dirty_inode(struct inode *inode, int flags) | |
538 | { | |
539 | struct gfs2_inode *ip = GFS2_I(inode); | |
540 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
541 | struct buffer_head *bh; | |
542 | struct gfs2_holder gh; | |
543 | int need_unlock = 0; | |
544 | int need_endtrans = 0; | |
545 | int ret; | |
546 | ||
eb43e660 | 547 | if (unlikely(gfs2_withdrawn(sdp))) |
0d1c7ae9 | 548 | return; |
ab9bbda0 SW |
549 | if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { |
550 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); | |
551 | if (ret) { | |
552 | fs_err(sdp, "dirty_inode: glock %d\n", ret); | |
e28c02b9 | 553 | gfs2_dump_glock(NULL, ip->i_gl, true); |
ab9bbda0 SW |
554 | return; |
555 | } | |
556 | need_unlock = 1; | |
3d162688 BM |
557 | } else if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) |
558 | return; | |
ab9bbda0 SW |
559 | |
560 | if (current->journal_info == NULL) { | |
561 | ret = gfs2_trans_begin(sdp, RES_DINODE, 0); | |
562 | if (ret) { | |
563 | fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); | |
564 | goto out; | |
565 | } | |
566 | need_endtrans = 1; | |
567 | } | |
568 | ||
569 | ret = gfs2_meta_inode_buffer(ip, &bh); | |
570 | if (ret == 0) { | |
350a9b0a | 571 | gfs2_trans_add_meta(ip->i_gl, bh); |
ab9bbda0 SW |
572 | gfs2_dinode_out(ip, bh->b_data); |
573 | brelse(bh); | |
574 | } | |
575 | ||
576 | if (need_endtrans) | |
577 | gfs2_trans_end(sdp); | |
578 | out: | |
579 | if (need_unlock) | |
580 | gfs2_glock_dq_uninit(&gh); | |
581 | } | |
582 | ||
9e6e0a12 SW |
583 | /** |
584 | * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one | |
585 | * @sdp: the filesystem | |
586 | * | |
587 | * Returns: errno | |
588 | */ | |
589 | ||
eb602521 | 590 | void gfs2_make_fs_ro(struct gfs2_sbd *sdp) |
9e6e0a12 | 591 | { |
601ef0d5 BP |
592 | int log_write_allowed = test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); |
593 | ||
a0e3cc65 | 594 | gfs2_flush_delete_work(sdp); |
601ef0d5 BP |
595 | if (!log_write_allowed && current == sdp->sd_quotad_process) |
596 | fs_warn(sdp, "The quotad daemon is withdrawing.\n"); | |
597 | else if (sdp->sd_quotad_process) | |
5b3a9f34 BP |
598 | kthread_stop(sdp->sd_quotad_process); |
599 | sdp->sd_quotad_process = NULL; | |
601ef0d5 BP |
600 | |
601 | if (!log_write_allowed && current == sdp->sd_logd_process) | |
602 | fs_warn(sdp, "The logd daemon is withdrawing.\n"); | |
603 | else if (sdp->sd_logd_process) | |
5b3a9f34 BP |
604 | kthread_stop(sdp->sd_logd_process); |
605 | sdp->sd_logd_process = NULL; | |
8ad151c2 | 606 | |
601ef0d5 BP |
607 | if (log_write_allowed) { |
608 | gfs2_quota_sync(sdp->sd_vfs, 0); | |
609 | gfs2_statfs_sync(sdp->sd_vfs, 0); | |
9e6e0a12 | 610 | |
601ef0d5 BP |
611 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SHUTDOWN | |
612 | GFS2_LFC_MAKE_FS_RO); | |
f3708fb5 AG |
613 | wait_event_timeout(sdp->sd_log_waitq, |
614 | gfs2_log_is_empty(sdp), | |
615 | HZ * 5); | |
616 | gfs2_assert_warn(sdp, gfs2_log_is_empty(sdp)); | |
601ef0d5 | 617 | } else { |
f3708fb5 AG |
618 | wait_event_timeout(sdp->sd_log_waitq, |
619 | gfs2_log_is_empty(sdp), | |
601ef0d5 BP |
620 | HZ * 5); |
621 | } | |
9e6e0a12 SW |
622 | gfs2_quota_cleanup(sdp); |
623 | ||
601ef0d5 BP |
624 | if (!log_write_allowed) |
625 | sdp->sd_vfs->s_flags |= SB_RDONLY; | |
9e6e0a12 SW |
626 | } |
627 | ||
9e6e0a12 SW |
628 | /** |
629 | * gfs2_put_super - Unmount the filesystem | |
630 | * @sb: The VFS superblock | |
631 | * | |
632 | */ | |
633 | ||
634 | static void gfs2_put_super(struct super_block *sb) | |
635 | { | |
636 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
9e6e0a12 SW |
637 | struct gfs2_jdesc *jd; |
638 | ||
9e6e0a12 SW |
639 | /* No more recovery requests */ |
640 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); | |
641 | smp_mb(); | |
642 | ||
643 | /* Wait on outstanding recovery */ | |
644 | restart: | |
645 | spin_lock(&sdp->sd_jindex_spin); | |
646 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
647 | if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) | |
648 | continue; | |
649 | spin_unlock(&sdp->sd_jindex_spin); | |
650 | wait_on_bit(&jd->jd_flags, JDF_RECOVERY, | |
74316201 | 651 | TASK_UNINTERRUPTIBLE); |
9e6e0a12 SW |
652 | goto restart; |
653 | } | |
654 | spin_unlock(&sdp->sd_jindex_spin); | |
655 | ||
bc98a42c | 656 | if (!sb_rdonly(sb)) { |
eb602521 | 657 | gfs2_make_fs_ro(sdp); |
9e6e0a12 | 658 | } |
5a61ae14 AG |
659 | WARN_ON(gfs2_withdrawing(sdp)); |
660 | ||
9e6e0a12 SW |
661 | /* At this point, we're through modifying the disk */ |
662 | ||
663 | /* Release stuff */ | |
664 | ||
665 | iput(sdp->sd_jindex); | |
9e6e0a12 SW |
666 | iput(sdp->sd_statfs_inode); |
667 | iput(sdp->sd_rindex); | |
668 | iput(sdp->sd_quota_inode); | |
669 | ||
670 | gfs2_glock_put(sdp->sd_rename_gl); | |
24972557 | 671 | gfs2_glock_put(sdp->sd_freeze_gl); |
9e6e0a12 SW |
672 | |
673 | if (!sdp->sd_args.ar_spectator) { | |
601ef0d5 BP |
674 | if (gfs2_holder_initialized(&sdp->sd_journal_gh)) |
675 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
676 | if (gfs2_holder_initialized(&sdp->sd_jinode_gh)) | |
677 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
9e6e0a12 SW |
678 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
679 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
97fd734b | 680 | free_local_statfs_inodes(sdp); |
9e6e0a12 SW |
681 | iput(sdp->sd_qc_inode); |
682 | } | |
683 | ||
684 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
685 | gfs2_clear_rgrpd(sdp); | |
686 | gfs2_jindex_free(sdp); | |
687 | /* Take apart glock structures and buffer lists */ | |
688 | gfs2_gl_hash_clear(sdp); | |
a9dd945c | 689 | truncate_inode_pages_final(&sdp->sd_aspace); |
b2fb7dab | 690 | gfs2_delete_debugfs_file(sdp); |
9e6e0a12 SW |
691 | /* Unmount the locking protocol */ |
692 | gfs2_lm_unmount(sdp); | |
693 | ||
694 | /* At this point, we're through participating in the lockspace */ | |
695 | gfs2_sys_fs_del(sdp); | |
c2a04b02 | 696 | free_sbd(sdp); |
9e6e0a12 SW |
697 | } |
698 | ||
9e6e0a12 SW |
699 | /** |
700 | * gfs2_sync_fs - sync the filesystem | |
701 | * @sb: the superblock | |
c551f66c | 702 | * @wait: true to wait for completion |
9e6e0a12 SW |
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); | |
c77b52c0 | 726 | error = gfs2_freeze_lock(sdp, &freeze_gh, 0); |
2e60d768 | 727 | if (error) { |
2e60d768 | 728 | gfs2_assert_withdraw(sdp, 0); |
8f918219 | 729 | } else { |
2e60d768 BM |
730 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); |
731 | error = thaw_super(sb); | |
732 | if (error) { | |
f29e62ee BP |
733 | fs_info(sdp, "GFS2: couldn't thaw filesystem: %d\n", |
734 | error); | |
2e60d768 BM |
735 | gfs2_assert_withdraw(sdp, 0); |
736 | } | |
c77b52c0 | 737 | gfs2_freeze_unlock(&freeze_gh); |
2e60d768 BM |
738 | } |
739 | deactivate_super(sb); | |
8f918219 AD |
740 | clear_bit_unlock(SDF_FS_FROZEN, &sdp->sd_flags); |
741 | wake_up_bit(&sdp->sd_flags, SDF_FS_FROZEN); | |
2e60d768 BM |
742 | return; |
743 | } | |
744 | ||
9e6e0a12 SW |
745 | /** |
746 | * gfs2_freeze - prevent further writes to the filesystem | |
747 | * @sb: the VFS structure for the filesystem | |
748 | * | |
749 | */ | |
750 | ||
751 | static int gfs2_freeze(struct super_block *sb) | |
752 | { | |
753 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
ff132c5f | 754 | int error; |
9e6e0a12 | 755 | |
2e60d768 | 756 | mutex_lock(&sdp->sd_freeze_mutex); |
ff132c5f BP |
757 | if (atomic_read(&sdp->sd_freeze_state) != SFS_UNFROZEN) { |
758 | error = -EBUSY; | |
2e60d768 | 759 | goto out; |
ff132c5f | 760 | } |
2e60d768 | 761 | |
9e6e0a12 | 762 | for (;;) { |
60528afa BP |
763 | if (gfs2_withdrawn(sdp)) { |
764 | error = -EINVAL; | |
765 | goto out; | |
766 | } | |
767 | ||
52b1cdcb | 768 | error = gfs2_lock_fs_check_clean(sdp); |
9e6e0a12 SW |
769 | if (!error) |
770 | break; | |
771 | ||
55317f5b | 772 | if (error == -EBUSY) |
9e6e0a12 | 773 | fs_err(sdp, "waiting for recovery before freeze\n"); |
52b1cdcb BP |
774 | else if (error == -EIO) { |
775 | fs_err(sdp, "Fatal IO error: cannot freeze gfs2 due " | |
776 | "to recovery error.\n"); | |
777 | goto out; | |
778 | } else { | |
9e6e0a12 | 779 | fs_err(sdp, "error freezing FS: %d\n", error); |
52b1cdcb | 780 | } |
9e6e0a12 SW |
781 | fs_err(sdp, "retrying...\n"); |
782 | msleep(1000); | |
783 | } | |
8f918219 | 784 | set_bit(SDF_FS_FROZEN, &sdp->sd_flags); |
2e60d768 BM |
785 | out: |
786 | mutex_unlock(&sdp->sd_freeze_mutex); | |
787 | return error; | |
9e6e0a12 SW |
788 | } |
789 | ||
790 | /** | |
791 | * gfs2_unfreeze - reallow writes to the filesystem | |
792 | * @sb: the VFS structure for the filesystem | |
793 | * | |
794 | */ | |
795 | ||
796 | static int gfs2_unfreeze(struct super_block *sb) | |
797 | { | |
d564053f SW |
798 | struct gfs2_sbd *sdp = sb->s_fs_info; |
799 | ||
2e60d768 | 800 | mutex_lock(&sdp->sd_freeze_mutex); |
ff132c5f | 801 | if (atomic_read(&sdp->sd_freeze_state) != SFS_FROZEN || |
6df9f9a2 | 802 | !gfs2_holder_initialized(&sdp->sd_freeze_gh)) { |
2e60d768 | 803 | mutex_unlock(&sdp->sd_freeze_mutex); |
ff132c5f | 804 | return -EINVAL; |
2e60d768 BM |
805 | } |
806 | ||
c77b52c0 | 807 | gfs2_freeze_unlock(&sdp->sd_freeze_gh); |
2e60d768 | 808 | mutex_unlock(&sdp->sd_freeze_mutex); |
8f918219 | 809 | return wait_on_bit(&sdp->sd_flags, SDF_FS_FROZEN, TASK_INTERRUPTIBLE); |
9e6e0a12 SW |
810 | } |
811 | ||
812 | /** | |
c551f66c | 813 | * statfs_slow_fill - fill in the sg for a given RG |
9e6e0a12 SW |
814 | * @rgd: the RG |
815 | * @sc: the sc structure | |
816 | * | |
817 | * Returns: 0 on success, -ESTALE if the LVB is invalid | |
818 | */ | |
819 | ||
820 | static int statfs_slow_fill(struct gfs2_rgrpd *rgd, | |
821 | struct gfs2_statfs_change_host *sc) | |
822 | { | |
823 | gfs2_rgrp_verify(rgd); | |
824 | sc->sc_total += rgd->rd_data; | |
825 | sc->sc_free += rgd->rd_free; | |
826 | sc->sc_dinodes += rgd->rd_dinodes; | |
827 | return 0; | |
828 | } | |
829 | ||
830 | /** | |
831 | * gfs2_statfs_slow - Stat a filesystem using asynchronous locking | |
832 | * @sdp: the filesystem | |
833 | * @sc: the sc info that will be returned | |
834 | * | |
835 | * Any error (other than a signal) will cause this routine to fall back | |
836 | * to the synchronous version. | |
837 | * | |
838 | * FIXME: This really shouldn't busy wait like this. | |
839 | * | |
840 | * Returns: errno | |
841 | */ | |
842 | ||
843 | static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
844 | { | |
9e6e0a12 SW |
845 | struct gfs2_rgrpd *rgd_next; |
846 | struct gfs2_holder *gha, *gh; | |
847 | unsigned int slots = 64; | |
848 | unsigned int x; | |
849 | int done; | |
850 | int error = 0, err; | |
851 | ||
852 | memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); | |
6da2ec56 | 853 | gha = kmalloc_array(slots, sizeof(struct gfs2_holder), GFP_KERNEL); |
9e6e0a12 SW |
854 | if (!gha) |
855 | return -ENOMEM; | |
6df9f9a2 AG |
856 | for (x = 0; x < slots; x++) |
857 | gfs2_holder_mark_uninitialized(gha + x); | |
9e6e0a12 | 858 | |
9e6e0a12 SW |
859 | rgd_next = gfs2_rgrpd_get_first(sdp); |
860 | ||
861 | for (;;) { | |
862 | done = 1; | |
863 | ||
864 | for (x = 0; x < slots; x++) { | |
865 | gh = gha + x; | |
866 | ||
6df9f9a2 | 867 | if (gfs2_holder_initialized(gh) && gfs2_glock_poll(gh)) { |
9e6e0a12 SW |
868 | err = gfs2_glock_wait(gh); |
869 | if (err) { | |
870 | gfs2_holder_uninit(gh); | |
871 | error = err; | |
872 | } else { | |
6f6597ba AG |
873 | if (!error) { |
874 | struct gfs2_rgrpd *rgd = | |
875 | gfs2_glock2rgrp(gh->gh_gl); | |
876 | ||
877 | error = statfs_slow_fill(rgd, sc); | |
878 | } | |
9e6e0a12 SW |
879 | gfs2_glock_dq_uninit(gh); |
880 | } | |
881 | } | |
882 | ||
6df9f9a2 | 883 | if (gfs2_holder_initialized(gh)) |
9e6e0a12 SW |
884 | done = 0; |
885 | else if (rgd_next && !error) { | |
886 | error = gfs2_glock_nq_init(rgd_next->rd_gl, | |
887 | LM_ST_SHARED, | |
888 | GL_ASYNC, | |
889 | gh); | |
890 | rgd_next = gfs2_rgrpd_get_next(rgd_next); | |
891 | done = 0; | |
892 | } | |
893 | ||
894 | if (signal_pending(current)) | |
895 | error = -ERESTARTSYS; | |
896 | } | |
897 | ||
898 | if (done) | |
899 | break; | |
900 | ||
901 | yield(); | |
902 | } | |
903 | ||
9e6e0a12 SW |
904 | kfree(gha); |
905 | return error; | |
906 | } | |
907 | ||
908 | /** | |
909 | * gfs2_statfs_i - Do a statfs | |
910 | * @sdp: the filesystem | |
c551f66c | 911 | * @sc: the sc structure |
9e6e0a12 SW |
912 | * |
913 | * Returns: errno | |
914 | */ | |
915 | ||
916 | static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
917 | { | |
918 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
919 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
920 | ||
921 | spin_lock(&sdp->sd_statfs_spin); | |
922 | ||
923 | *sc = *m_sc; | |
924 | sc->sc_total += l_sc->sc_total; | |
925 | sc->sc_free += l_sc->sc_free; | |
926 | sc->sc_dinodes += l_sc->sc_dinodes; | |
927 | ||
928 | spin_unlock(&sdp->sd_statfs_spin); | |
929 | ||
930 | if (sc->sc_free < 0) | |
931 | sc->sc_free = 0; | |
932 | if (sc->sc_free > sc->sc_total) | |
933 | sc->sc_free = sc->sc_total; | |
934 | if (sc->sc_dinodes < 0) | |
935 | sc->sc_dinodes = 0; | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
940 | /** | |
941 | * gfs2_statfs - Gather and return stats about the filesystem | |
c551f66c LJ |
942 | * @dentry: The name of the link |
943 | * @buf: The buffer | |
9e6e0a12 SW |
944 | * |
945 | * Returns: 0 on success or error code | |
946 | */ | |
947 | ||
948 | static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) | |
949 | { | |
fc64005c | 950 | struct super_block *sb = dentry->d_sb; |
9e6e0a12 SW |
951 | struct gfs2_sbd *sdp = sb->s_fs_info; |
952 | struct gfs2_statfs_change_host sc; | |
953 | int error; | |
954 | ||
8339ee54 SW |
955 | error = gfs2_rindex_update(sdp); |
956 | if (error) | |
957 | return error; | |
958 | ||
9e6e0a12 SW |
959 | if (gfs2_tune_get(sdp, gt_statfs_slow)) |
960 | error = gfs2_statfs_slow(sdp, &sc); | |
961 | else | |
962 | error = gfs2_statfs_i(sdp, &sc); | |
963 | ||
964 | if (error) | |
965 | return error; | |
966 | ||
967 | buf->f_type = GFS2_MAGIC; | |
968 | buf->f_bsize = sdp->sd_sb.sb_bsize; | |
969 | buf->f_blocks = sc.sc_total; | |
970 | buf->f_bfree = sc.sc_free; | |
971 | buf->f_bavail = sc.sc_free; | |
972 | buf->f_files = sc.sc_dinodes + sc.sc_free; | |
973 | buf->f_ffree = sc.sc_free; | |
974 | buf->f_namelen = GFS2_FNAMESIZE; | |
975 | ||
976 | return 0; | |
977 | } | |
978 | ||
9e6e0a12 SW |
979 | /** |
980 | * gfs2_drop_inode - Drop an inode (test for remote unlink) | |
981 | * @inode: The inode to drop | |
982 | * | |
61b91cfd | 983 | * If we've received a callback on an iopen lock then it's because a |
9e6e0a12 SW |
984 | * remote node tried to deallocate the inode but failed due to this node |
985 | * still having the inode open. Here we mark the link count zero | |
986 | * since we know that it must have reached zero if the GLF_DEMOTE flag | |
987 | * is set on the iopen glock. If we didn't do a disk read since the | |
988 | * remote node removed the final link then we might otherwise miss | |
989 | * this event. This check ensures that this node will deallocate the | |
990 | * inode's blocks, or alternatively pass the baton on to another | |
991 | * node for later deallocation. | |
992 | */ | |
993 | ||
45321ac5 | 994 | static int gfs2_drop_inode(struct inode *inode) |
9e6e0a12 SW |
995 | { |
996 | struct gfs2_inode *ip = GFS2_I(inode); | |
997 | ||
6df9f9a2 AG |
998 | if (!test_bit(GIF_FREE_VFS_INODE, &ip->i_flags) && |
999 | inode->i_nlink && | |
1000 | gfs2_holder_initialized(&ip->i_iopen_gh)) { | |
9e6e0a12 | 1001 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
6df9f9a2 | 1002 | if (test_bit(GLF_DEMOTE, &gl->gl_flags)) |
9e6e0a12 SW |
1003 | clear_nlink(inode); |
1004 | } | |
6a1c8f6d AG |
1005 | |
1006 | /* | |
1007 | * When under memory pressure when an inode's link count has dropped to | |
1008 | * zero, defer deleting the inode to the delete workqueue. This avoids | |
1009 | * calling into DLM under memory pressure, which can deadlock. | |
1010 | */ | |
1011 | if (!inode->i_nlink && | |
1012 | unlikely(current->flags & PF_MEMALLOC) && | |
1013 | gfs2_holder_initialized(&ip->i_iopen_gh)) { | |
1014 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; | |
1015 | ||
1016 | gfs2_glock_hold(gl); | |
a0e3cc65 | 1017 | if (!gfs2_queue_delete_work(gl, 0)) |
6a1c8f6d AG |
1018 | gfs2_glock_queue_put(gl); |
1019 | return false; | |
1020 | } | |
1021 | ||
45321ac5 | 1022 | return generic_drop_inode(inode); |
9e6e0a12 SW |
1023 | } |
1024 | ||
1025 | static int is_ancestor(const struct dentry *d1, const struct dentry *d2) | |
1026 | { | |
1027 | do { | |
1028 | if (d1 == d2) | |
1029 | return 1; | |
1030 | d1 = d1->d_parent; | |
1031 | } while (!IS_ROOT(d1)); | |
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | /** | |
1036 | * gfs2_show_options - Show mount options for /proc/mounts | |
1037 | * @s: seq_file structure | |
34c80b1d | 1038 | * @root: root of this (sub)tree |
9e6e0a12 SW |
1039 | * |
1040 | * Returns: 0 on success or error code | |
1041 | */ | |
1042 | ||
34c80b1d | 1043 | static int gfs2_show_options(struct seq_file *s, struct dentry *root) |
9e6e0a12 | 1044 | { |
34c80b1d | 1045 | struct gfs2_sbd *sdp = root->d_sb->s_fs_info; |
9e6e0a12 | 1046 | struct gfs2_args *args = &sdp->sd_args; |
3d3c10f2 | 1047 | int val; |
9e6e0a12 | 1048 | |
34c80b1d | 1049 | if (is_ancestor(root, sdp->sd_master_dir)) |
eaebdedc | 1050 | seq_puts(s, ",meta"); |
9e6e0a12 | 1051 | if (args->ar_lockproto[0]) |
a068acf2 | 1052 | seq_show_option(s, "lockproto", args->ar_lockproto); |
9e6e0a12 | 1053 | if (args->ar_locktable[0]) |
a068acf2 | 1054 | seq_show_option(s, "locktable", args->ar_locktable); |
9e6e0a12 | 1055 | if (args->ar_hostdata[0]) |
a068acf2 | 1056 | seq_show_option(s, "hostdata", args->ar_hostdata); |
9e6e0a12 | 1057 | if (args->ar_spectator) |
eaebdedc | 1058 | seq_puts(s, ",spectator"); |
9e6e0a12 | 1059 | if (args->ar_localflocks) |
eaebdedc | 1060 | seq_puts(s, ",localflocks"); |
9e6e0a12 | 1061 | if (args->ar_debug) |
eaebdedc | 1062 | seq_puts(s, ",debug"); |
9e6e0a12 | 1063 | if (args->ar_posix_acl) |
eaebdedc | 1064 | seq_puts(s, ",acl"); |
9e6e0a12 SW |
1065 | if (args->ar_quota != GFS2_QUOTA_DEFAULT) { |
1066 | char *state; | |
1067 | switch (args->ar_quota) { | |
1068 | case GFS2_QUOTA_OFF: | |
1069 | state = "off"; | |
1070 | break; | |
1071 | case GFS2_QUOTA_ACCOUNT: | |
1072 | state = "account"; | |
1073 | break; | |
1074 | case GFS2_QUOTA_ON: | |
1075 | state = "on"; | |
1076 | break; | |
1077 | default: | |
1078 | state = "unknown"; | |
1079 | break; | |
1080 | } | |
1081 | seq_printf(s, ",quota=%s", state); | |
1082 | } | |
1083 | if (args->ar_suiddir) | |
eaebdedc | 1084 | seq_puts(s, ",suiddir"); |
9e6e0a12 SW |
1085 | if (args->ar_data != GFS2_DATA_DEFAULT) { |
1086 | char *state; | |
1087 | switch (args->ar_data) { | |
1088 | case GFS2_DATA_WRITEBACK: | |
1089 | state = "writeback"; | |
1090 | break; | |
1091 | case GFS2_DATA_ORDERED: | |
1092 | state = "ordered"; | |
1093 | break; | |
1094 | default: | |
1095 | state = "unknown"; | |
1096 | break; | |
1097 | } | |
1098 | seq_printf(s, ",data=%s", state); | |
1099 | } | |
1100 | if (args->ar_discard) | |
eaebdedc | 1101 | seq_puts(s, ",discard"); |
5e687eac BM |
1102 | val = sdp->sd_tune.gt_logd_secs; |
1103 | if (val != 30) | |
3d3c10f2 BM |
1104 | seq_printf(s, ",commit=%d", val); |
1105 | val = sdp->sd_tune.gt_statfs_quantum; | |
1106 | if (val != 30) | |
1107 | seq_printf(s, ",statfs_quantum=%d", val); | |
2b9731e8 SW |
1108 | else if (sdp->sd_tune.gt_statfs_slow) |
1109 | seq_puts(s, ",statfs_quantum=0"); | |
3d3c10f2 BM |
1110 | val = sdp->sd_tune.gt_quota_quantum; |
1111 | if (val != 60) | |
1112 | seq_printf(s, ",quota_quantum=%d", val); | |
1113 | if (args->ar_statfs_percent) | |
1114 | seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); | |
d34843d0 BP |
1115 | if (args->ar_errors != GFS2_ERRORS_DEFAULT) { |
1116 | const char *state; | |
1117 | ||
1118 | switch (args->ar_errors) { | |
1119 | case GFS2_ERRORS_WITHDRAW: | |
1120 | state = "withdraw"; | |
1121 | break; | |
1122 | case GFS2_ERRORS_PANIC: | |
1123 | state = "panic"; | |
1124 | break; | |
1125 | default: | |
1126 | state = "unknown"; | |
1127 | break; | |
1128 | } | |
1129 | seq_printf(s, ",errors=%s", state); | |
1130 | } | |
cdcfde62 | 1131 | if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) |
eaebdedc | 1132 | seq_puts(s, ",nobarrier"); |
913a71d2 | 1133 | if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) |
eaebdedc | 1134 | seq_puts(s, ",demote_interface_used"); |
90306c41 | 1135 | if (args->ar_rgrplvb) |
eaebdedc | 1136 | seq_puts(s, ",rgrplvb"); |
471f3db2 BM |
1137 | if (args->ar_loccookie) |
1138 | seq_puts(s, ",loccookie"); | |
9e6e0a12 SW |
1139 | return 0; |
1140 | } | |
1141 | ||
f42ab085 SW |
1142 | static void gfs2_final_release_pages(struct gfs2_inode *ip) |
1143 | { | |
1144 | struct inode *inode = &ip->i_inode; | |
1145 | struct gfs2_glock *gl = ip->i_gl; | |
1146 | ||
1147 | truncate_inode_pages(gfs2_glock2aspace(ip->i_gl), 0); | |
1148 | truncate_inode_pages(&inode->i_data, 0); | |
1149 | ||
638803d4 | 1150 | if (atomic_read(&gl->gl_revokes) == 0) { |
f42ab085 SW |
1151 | clear_bit(GLF_LFLUSH, &gl->gl_flags); |
1152 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
1153 | } | |
1154 | } | |
1155 | ||
1156 | static int gfs2_dinode_dealloc(struct gfs2_inode *ip) | |
1157 | { | |
1158 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); | |
f42ab085 | 1159 | struct gfs2_rgrpd *rgd; |
564e12b1 | 1160 | struct gfs2_holder gh; |
f42ab085 SW |
1161 | int error; |
1162 | ||
1163 | if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { | |
94fb763b | 1164 | gfs2_consist_inode(ip); |
f42ab085 SW |
1165 | return -EIO; |
1166 | } | |
1167 | ||
8e2e0047 BP |
1168 | error = gfs2_rindex_update(sdp); |
1169 | if (error) | |
1170 | return error; | |
f42ab085 | 1171 | |
f4108a60 | 1172 | error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
f42ab085 | 1173 | if (error) |
5407e242 | 1174 | return error; |
f42ab085 | 1175 | |
66fc061b | 1176 | rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); |
f42ab085 SW |
1177 | if (!rgd) { |
1178 | gfs2_consist_inode(ip); | |
1179 | error = -EIO; | |
8339ee54 | 1180 | goto out_qs; |
f42ab085 SW |
1181 | } |
1182 | ||
4fc7ec31 BP |
1183 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, |
1184 | LM_FLAG_NODE_SCOPE, &gh); | |
f42ab085 | 1185 | if (error) |
8339ee54 | 1186 | goto out_qs; |
f42ab085 | 1187 | |
4667a0ec SW |
1188 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, |
1189 | sdp->sd_jdesc->jd_blocks); | |
f42ab085 SW |
1190 | if (error) |
1191 | goto out_rg_gunlock; | |
1192 | ||
1193 | gfs2_free_di(rgd, ip); | |
1194 | ||
1195 | gfs2_final_release_pages(ip); | |
1196 | ||
1197 | gfs2_trans_end(sdp); | |
1198 | ||
1199 | out_rg_gunlock: | |
564e12b1 | 1200 | gfs2_glock_dq_uninit(&gh); |
f42ab085 SW |
1201 | out_qs: |
1202 | gfs2_quota_unhold(ip); | |
f42ab085 SW |
1203 | return error; |
1204 | } | |
1205 | ||
71c1b213 AG |
1206 | /** |
1207 | * gfs2_glock_put_eventually | |
1208 | * @gl: The glock to put | |
1209 | * | |
1210 | * When under memory pressure, trigger a deferred glock put to make sure we | |
1211 | * won't call into DLM and deadlock. Otherwise, put the glock directly. | |
1212 | */ | |
1213 | ||
1214 | static void gfs2_glock_put_eventually(struct gfs2_glock *gl) | |
1215 | { | |
1216 | if (current->flags & PF_MEMALLOC) | |
1217 | gfs2_glock_queue_put(gl); | |
1218 | else | |
1219 | gfs2_glock_put(gl); | |
1220 | } | |
1221 | ||
9e73330f AG |
1222 | static bool gfs2_upgrade_iopen_glock(struct inode *inode) |
1223 | { | |
1224 | struct gfs2_inode *ip = GFS2_I(inode); | |
1225 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
1226 | struct gfs2_holder *gh = &ip->i_iopen_gh; | |
1227 | long timeout = 5 * HZ; | |
1228 | int error; | |
1229 | ||
1230 | gh->gh_flags |= GL_NOCACHE; | |
1231 | gfs2_glock_dq_wait(gh); | |
1232 | ||
1233 | /* | |
1234 | * If there are no other lock holders, we'll get the lock immediately. | |
1235 | * Otherwise, the other nodes holding the lock will be notified about | |
1236 | * our locking request. If they don't have the inode open, they'll | |
9e8990de AG |
1237 | * evict the cached inode and release the lock. Otherwise, if they |
1238 | * poke the inode glock, we'll take this as an indication that they | |
1239 | * still need the iopen glock and that they'll take care of deleting | |
1240 | * the inode when they're done. As a last resort, if another node | |
1241 | * keeps holding the iopen glock without showing any activity on the | |
1242 | * inode glock, we'll eventually time out. | |
9e73330f AG |
1243 | * |
1244 | * Note that we're passing the LM_FLAG_TRY_1CB flag to the first | |
1245 | * locking request as an optimization to notify lock holders as soon as | |
1246 | * possible. Without that flag, they'd be notified implicitly by the | |
1247 | * second locking request. | |
1248 | */ | |
1249 | ||
1250 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, gh); | |
1251 | error = gfs2_glock_nq(gh); | |
1252 | if (error != GLR_TRYFAILED) | |
1253 | return !error; | |
1254 | ||
1255 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, GL_ASYNC | GL_NOCACHE, gh); | |
1256 | error = gfs2_glock_nq(gh); | |
1257 | if (error) | |
1258 | return false; | |
1259 | ||
1260 | timeout = wait_event_interruptible_timeout(sdp->sd_async_glock_wait, | |
9e8990de AG |
1261 | !test_bit(HIF_WAIT, &gh->gh_iflags) || |
1262 | test_bit(GLF_DEMOTE, &ip->i_gl->gl_flags), | |
9e73330f AG |
1263 | timeout); |
1264 | if (!test_bit(HIF_HOLDER, &gh->gh_iflags)) { | |
1265 | gfs2_glock_dq(gh); | |
1266 | return false; | |
1267 | } | |
1268 | return true; | |
1269 | } | |
1270 | ||
53dbc27e BP |
1271 | /** |
1272 | * evict_should_delete - determine whether the inode is eligible for deletion | |
1273 | * @inode: The inode to evict | |
c551f66c | 1274 | * @gh: The glock holder structure |
53dbc27e BP |
1275 | * |
1276 | * This function determines whether the evicted inode is eligible to be deleted | |
1277 | * and locks the inode glock. | |
1278 | * | |
1279 | * Returns: the fate of the dinode | |
1280 | */ | |
1281 | static enum dinode_demise evict_should_delete(struct inode *inode, | |
1282 | struct gfs2_holder *gh) | |
1283 | { | |
1284 | struct gfs2_inode *ip = GFS2_I(inode); | |
1285 | struct super_block *sb = inode->i_sb; | |
1286 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1287 | int ret; | |
1288 | ||
1289 | if (test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { | |
1290 | BUG_ON(!gfs2_glock_is_locked_by_me(ip->i_gl)); | |
1291 | goto should_delete; | |
1292 | } | |
1293 | ||
1294 | if (test_bit(GIF_DEFERRED_DELETE, &ip->i_flags)) | |
1295 | return SHOULD_DEFER_EVICTION; | |
1296 | ||
1297 | /* Deletes should never happen under memory pressure anymore. */ | |
1298 | if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) | |
1299 | return SHOULD_DEFER_EVICTION; | |
1300 | ||
1301 | /* Must not read inode block until block type has been verified */ | |
1302 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, gh); | |
1303 | if (unlikely(ret)) { | |
1304 | glock_clear_object(ip->i_iopen_gh.gh_gl, ip); | |
1305 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; | |
1306 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); | |
1307 | return SHOULD_DEFER_EVICTION; | |
1308 | } | |
1309 | ||
1310 | if (gfs2_inode_already_deleted(ip->i_gl, ip->i_no_formal_ino)) | |
1311 | return SHOULD_NOT_DELETE_DINODE; | |
1312 | ret = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); | |
1313 | if (ret) | |
1314 | return SHOULD_NOT_DELETE_DINODE; | |
1315 | ||
1316 | if (test_bit(GIF_INVALID, &ip->i_flags)) { | |
1317 | ret = gfs2_inode_refresh(ip); | |
1318 | if (ret) | |
1319 | return SHOULD_NOT_DELETE_DINODE; | |
1320 | } | |
1321 | ||
1322 | /* | |
1323 | * The inode may have been recreated in the meantime. | |
1324 | */ | |
1325 | if (inode->i_nlink) | |
1326 | return SHOULD_NOT_DELETE_DINODE; | |
1327 | ||
1328 | should_delete: | |
1329 | if (gfs2_holder_initialized(&ip->i_iopen_gh) && | |
1330 | test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { | |
1331 | if (!gfs2_upgrade_iopen_glock(inode)) { | |
1332 | gfs2_holder_uninit(&ip->i_iopen_gh); | |
1333 | return SHOULD_NOT_DELETE_DINODE; | |
1334 | } | |
1335 | } | |
1336 | return SHOULD_DELETE_DINODE; | |
1337 | } | |
1338 | ||
6e7e9a50 BP |
1339 | /** |
1340 | * evict_unlinked_inode - delete the pieces of an unlinked evicted inode | |
1341 | * @inode: The inode to evict | |
1342 | */ | |
1343 | static int evict_unlinked_inode(struct inode *inode) | |
1344 | { | |
1345 | struct gfs2_inode *ip = GFS2_I(inode); | |
1346 | int ret; | |
1347 | ||
1348 | if (S_ISDIR(inode->i_mode) && | |
1349 | (ip->i_diskflags & GFS2_DIF_EXHASH)) { | |
1350 | ret = gfs2_dir_exhash_dealloc(ip); | |
1351 | if (ret) | |
1352 | goto out; | |
1353 | } | |
1354 | ||
1355 | if (ip->i_eattr) { | |
1356 | ret = gfs2_ea_dealloc(ip); | |
1357 | if (ret) | |
1358 | goto out; | |
1359 | } | |
1360 | ||
1361 | if (!gfs2_is_stuffed(ip)) { | |
1362 | ret = gfs2_file_dealloc(ip); | |
1363 | if (ret) | |
1364 | goto out; | |
1365 | } | |
1366 | ||
1367 | /* We're about to clear the bitmap for the dinode, but as soon as we | |
1368 | do, gfs2_create_inode can create another inode at the same block | |
1369 | location and try to set gl_object again. We clear gl_object here so | |
1370 | that subsequent inode creates don't see an old gl_object. */ | |
1371 | glock_clear_object(ip->i_gl, ip); | |
1372 | ret = gfs2_dinode_dealloc(ip); | |
1373 | gfs2_inode_remember_delete(ip->i_gl, ip->i_no_formal_ino); | |
1374 | out: | |
1375 | return ret; | |
1376 | } | |
1377 | ||
d90be6ab BP |
1378 | /* |
1379 | * evict_linked_inode - evict an inode whose dinode has not been unlinked | |
1380 | * @inode: The inode to evict | |
1381 | */ | |
1382 | static int evict_linked_inode(struct inode *inode) | |
1383 | { | |
1384 | struct super_block *sb = inode->i_sb; | |
1385 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1386 | struct gfs2_inode *ip = GFS2_I(inode); | |
1387 | struct address_space *metamapping; | |
1388 | int ret; | |
1389 | ||
1390 | gfs2_log_flush(sdp, ip->i_gl, GFS2_LOG_HEAD_FLUSH_NORMAL | | |
1391 | GFS2_LFC_EVICT_INODE); | |
1392 | metamapping = gfs2_glock2aspace(ip->i_gl); | |
1393 | if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { | |
1394 | filemap_fdatawrite(metamapping); | |
1395 | filemap_fdatawait(metamapping); | |
1396 | } | |
1397 | write_inode_now(inode, 1); | |
1398 | gfs2_ail_flush(ip->i_gl, 0); | |
1399 | ||
1400 | ret = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); | |
1401 | if (ret) | |
1402 | return ret; | |
1403 | ||
1404 | /* Needs to be done before glock release & also in a transaction */ | |
1405 | truncate_inode_pages(&inode->i_data, 0); | |
1406 | truncate_inode_pages(metamapping, 0); | |
1407 | gfs2_trans_end(sdp); | |
1408 | return 0; | |
1409 | } | |
1410 | ||
380f7c65 SW |
1411 | /** |
1412 | * gfs2_evict_inode - Remove an inode from cache | |
1413 | * @inode: The inode to evict | |
1414 | * | |
1415 | * There are three cases to consider: | |
1416 | * 1. i_nlink == 0, we are final opener (and must deallocate) | |
1417 | * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) | |
1418 | * 3. i_nlink > 0 | |
1419 | * | |
1420 | * If the fs is read only, then we have to treat all cases as per #3 | |
1421 | * since we are unable to do any deallocation. The inode will be | |
1422 | * deallocated by the next read/write node to attempt an allocation | |
1423 | * in the same resource group | |
1424 | * | |
9e6e0a12 SW |
1425 | * We have to (at the moment) hold the inodes main lock to cover |
1426 | * the gap between unlocking the shared lock on the iopen lock and | |
1427 | * taking the exclusive lock. I'd rather do a shared -> exclusive | |
1428 | * conversion on the iopen lock, but we can change that later. This | |
1429 | * is safe, just less efficient. | |
1430 | */ | |
1431 | ||
d5c1515c | 1432 | static void gfs2_evict_inode(struct inode *inode) |
9e6e0a12 | 1433 | { |
001e8e8d SW |
1434 | struct super_block *sb = inode->i_sb; |
1435 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
9e6e0a12 SW |
1436 | struct gfs2_inode *ip = GFS2_I(inode); |
1437 | struct gfs2_holder gh; | |
23d828fc | 1438 | int ret; |
9e6e0a12 | 1439 | |
05978803 AD |
1440 | if (test_bit(GIF_FREE_VFS_INODE, &ip->i_flags)) { |
1441 | clear_inode(inode); | |
1442 | return; | |
1443 | } | |
1444 | ||
bc98a42c | 1445 | if (inode->i_nlink || sb_rdonly(sb)) |
d5c1515c AV |
1446 | goto out; |
1447 | ||
53dbc27e BP |
1448 | gfs2_holder_mark_uninitialized(&gh); |
1449 | ret = evict_should_delete(inode, &gh); | |
1450 | if (ret == SHOULD_DEFER_EVICTION) | |
8c7b9262 | 1451 | goto out; |
0a0d9f55 BP |
1452 | if (ret == SHOULD_DELETE_DINODE) |
1453 | ret = evict_unlinked_inode(inode); | |
1454 | else | |
1455 | ret = evict_linked_inode(inode); | |
9e6e0a12 | 1456 | |
a097dc7e BP |
1457 | if (gfs2_rs_active(&ip->i_res)) |
1458 | gfs2_rs_deltree(&ip->i_res); | |
8e2e0047 | 1459 | |
240c6235 BP |
1460 | if (gfs2_holder_initialized(&gh)) { |
1461 | glock_clear_object(ip->i_gl, ip); | |
e0b62e21 | 1462 | gfs2_glock_dq_uninit(&gh); |
240c6235 | 1463 | } |
23d828fc BP |
1464 | if (ret && ret != GLR_TRYFAILED && ret != -EROFS) |
1465 | fs_warn(sdp, "gfs2_evict_inode: %d\n", ret); | |
9e6e0a12 | 1466 | out: |
91b0abe3 | 1467 | truncate_inode_pages_final(&inode->i_data); |
2fba46a0 BP |
1468 | if (ip->i_qadata) |
1469 | gfs2_assert_warn(sdp, ip->i_qadata->qa_ref == 0); | |
1595548f | 1470 | gfs2_rs_delete(ip, NULL); |
45138990 | 1471 | gfs2_ordered_del_inode(ip); |
dbd5768f | 1472 | clear_inode(inode); |
17d539f0 | 1473 | gfs2_dir_hash_inval(ip); |
40e7e86e AG |
1474 | if (ip->i_gl) { |
1475 | glock_clear_object(ip->i_gl, ip); | |
1476 | wait_on_bit_io(&ip->i_flags, GIF_GLOP_PENDING, TASK_UNINTERRUPTIBLE); | |
1477 | gfs2_glock_add_to_lru(ip->i_gl); | |
1478 | gfs2_glock_put_eventually(ip->i_gl); | |
1479 | ip->i_gl = NULL; | |
1480 | } | |
6df9f9a2 | 1481 | if (gfs2_holder_initialized(&ip->i_iopen_gh)) { |
71c1b213 AG |
1482 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
1483 | ||
1484 | glock_clear_object(gl, ip); | |
40e7e86e AG |
1485 | if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { |
1486 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; | |
1487 | gfs2_glock_dq(&ip->i_iopen_gh); | |
1488 | } | |
71c1b213 | 1489 | gfs2_glock_hold(gl); |
40e7e86e | 1490 | gfs2_holder_uninit(&ip->i_iopen_gh); |
71c1b213 | 1491 | gfs2_glock_put_eventually(gl); |
d5c1515c | 1492 | } |
9e6e0a12 SW |
1493 | } |
1494 | ||
1495 | static struct inode *gfs2_alloc_inode(struct super_block *sb) | |
1496 | { | |
1497 | struct gfs2_inode *ip; | |
1498 | ||
1499 | ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); | |
d4031259 AG |
1500 | if (!ip) |
1501 | return NULL; | |
1502 | ip->i_flags = 0; | |
1503 | ip->i_gl = NULL; | |
40e7e86e | 1504 | gfs2_holder_mark_uninitialized(&ip->i_iopen_gh); |
d4031259 AG |
1505 | memset(&ip->i_res, 0, sizeof(ip->i_res)); |
1506 | RB_CLEAR_NODE(&ip->i_res.rs_node); | |
1507 | ip->i_rahead = 0; | |
9e6e0a12 SW |
1508 | return &ip->i_inode; |
1509 | } | |
1510 | ||
784494e1 | 1511 | static void gfs2_free_inode(struct inode *inode) |
9e6e0a12 | 1512 | { |
784494e1 | 1513 | kmem_cache_free(gfs2_inode_cachep, GFS2_I(inode)); |
fa0d7e3d NP |
1514 | } |
1515 | ||
97fd734b AD |
1516 | extern void free_local_statfs_inodes(struct gfs2_sbd *sdp) |
1517 | { | |
1518 | struct local_statfs_inode *lsi, *safe; | |
1519 | ||
1520 | /* Run through the statfs inodes list to iput and free memory */ | |
1521 | list_for_each_entry_safe(lsi, safe, &sdp->sd_sc_inodes_list, si_list) { | |
1522 | if (lsi->si_jid == sdp->sd_jdesc->jd_jid) | |
1523 | sdp->sd_sc_inode = NULL; /* belongs to this node */ | |
1524 | if (lsi->si_sc_inode) | |
1525 | iput(lsi->si_sc_inode); | |
1526 | list_del(&lsi->si_list); | |
1527 | kfree(lsi); | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | extern struct inode *find_local_statfs_inode(struct gfs2_sbd *sdp, | |
1532 | unsigned int index) | |
1533 | { | |
1534 | struct local_statfs_inode *lsi; | |
1535 | ||
1536 | /* Return the local (per node) statfs inode in the | |
1537 | * sdp->sd_sc_inodes_list corresponding to the 'index'. */ | |
1538 | list_for_each_entry(lsi, &sdp->sd_sc_inodes_list, si_list) { | |
1539 | if (lsi->si_jid == index) | |
1540 | return lsi->si_sc_inode; | |
1541 | } | |
1542 | return NULL; | |
1543 | } | |
1544 | ||
9e6e0a12 SW |
1545 | const struct super_operations gfs2_super_ops = { |
1546 | .alloc_inode = gfs2_alloc_inode, | |
784494e1 | 1547 | .free_inode = gfs2_free_inode, |
9e6e0a12 | 1548 | .write_inode = gfs2_write_inode, |
ab9bbda0 | 1549 | .dirty_inode = gfs2_dirty_inode, |
d5c1515c | 1550 | .evict_inode = gfs2_evict_inode, |
9e6e0a12 | 1551 | .put_super = gfs2_put_super, |
9e6e0a12 | 1552 | .sync_fs = gfs2_sync_fs, |
2e60d768 BM |
1553 | .freeze_super = gfs2_freeze, |
1554 | .thaw_super = gfs2_unfreeze, | |
9e6e0a12 | 1555 | .statfs = gfs2_statfs, |
9e6e0a12 SW |
1556 | .drop_inode = gfs2_drop_inode, |
1557 | .show_options = gfs2_show_options, | |
1558 | }; | |
1559 |