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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 4 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
b3b94faa DT |
7 | #include <linux/spinlock.h> |
8 | #include <linux/completion.h> | |
9 | #include <linux/buffer_head.h> | |
5c676f6d | 10 | #include <linux/gfs2_ondisk.h> |
6802e340 | 11 | #include <linux/bio.h> |
c65f7fb5 | 12 | #include <linux/posix_acl.h> |
f39814f6 | 13 | #include <linux/security.h> |
b3b94faa DT |
14 | |
15 | #include "gfs2.h" | |
5c676f6d | 16 | #include "incore.h" |
b3b94faa DT |
17 | #include "bmap.h" |
18 | #include "glock.h" | |
19 | #include "glops.h" | |
20 | #include "inode.h" | |
21 | #include "log.h" | |
22 | #include "meta_io.h" | |
b3b94faa DT |
23 | #include "recovery.h" |
24 | #include "rgrp.h" | |
5c676f6d | 25 | #include "util.h" |
ddacfaf7 | 26 | #include "trans.h" |
17d539f0 | 27 | #include "dir.h" |
f4686c26 | 28 | #include "lops.h" |
b3b94faa | 29 | |
2e60d768 BM |
30 | struct workqueue_struct *gfs2_freeze_wq; |
31 | ||
601ef0d5 BP |
32 | extern struct workqueue_struct *gfs2_control_wq; |
33 | ||
75549186 SW |
34 | static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh) |
35 | { | |
15562c43 BP |
36 | fs_err(gl->gl_name.ln_sbd, |
37 | "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page " | |
38 | "state 0x%lx\n", | |
75549186 SW |
39 | bh, (unsigned long long)bh->b_blocknr, bh->b_state, |
40 | bh->b_page->mapping, bh->b_page->flags); | |
15562c43 | 41 | fs_err(gl->gl_name.ln_sbd, "AIL glock %u:%llu mapping %p\n", |
75549186 SW |
42 | gl->gl_name.ln_type, gl->gl_name.ln_number, |
43 | gfs2_glock2aspace(gl)); | |
badb55ec AG |
44 | gfs2_lm(gl->gl_name.ln_sbd, "AIL error\n"); |
45 | gfs2_withdraw(gl->gl_name.ln_sbd); | |
75549186 SW |
46 | } |
47 | ||
ddacfaf7 | 48 | /** |
dba898b0 | 49 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 | 50 | * @gl: the glock |
b5b24d7a | 51 | * @fsync: set when called from fsync (not all buffers will be clean) |
ddacfaf7 SW |
52 | * |
53 | * None of the buffers should be dirty, locked, or pinned. | |
54 | */ | |
55 | ||
1bc333f4 BM |
56 | static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync, |
57 | unsigned int nr_revokes) | |
ddacfaf7 | 58 | { |
15562c43 | 59 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
ddacfaf7 | 60 | struct list_head *head = &gl->gl_ail_list; |
b5b24d7a | 61 | struct gfs2_bufdata *bd, *tmp; |
ddacfaf7 | 62 | struct buffer_head *bh; |
b5b24d7a | 63 | const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); |
d8348de0 | 64 | |
b5b24d7a | 65 | gfs2_log_lock(sdp); |
d6a079e8 | 66 | spin_lock(&sdp->sd_ail_lock); |
1bc333f4 BM |
67 | list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) { |
68 | if (nr_revokes == 0) | |
69 | break; | |
ddacfaf7 | 70 | bh = bd->bd_bh; |
b5b24d7a SW |
71 | if (bh->b_state & b_state) { |
72 | if (fsync) | |
73 | continue; | |
75549186 | 74 | gfs2_ail_error(gl, bh); |
b5b24d7a | 75 | } |
1ad38c43 | 76 | gfs2_trans_add_revoke(sdp, bd); |
1bc333f4 | 77 | nr_revokes--; |
ddacfaf7 | 78 | } |
8eae1ca0 | 79 | GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); |
d6a079e8 | 80 | spin_unlock(&sdp->sd_ail_lock); |
b5b24d7a | 81 | gfs2_log_unlock(sdp); |
dba898b0 SW |
82 | } |
83 | ||
84 | ||
1c634f94 | 85 | static int gfs2_ail_empty_gl(struct gfs2_glock *gl) |
dba898b0 | 86 | { |
15562c43 | 87 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
dba898b0 | 88 | struct gfs2_trans tr; |
1c634f94 | 89 | int ret; |
dba898b0 SW |
90 | |
91 | memset(&tr, 0, sizeof(tr)); | |
d69a3c65 SW |
92 | INIT_LIST_HEAD(&tr.tr_buf); |
93 | INIT_LIST_HEAD(&tr.tr_databuf); | |
dba898b0 SW |
94 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); |
95 | ||
9ff78289 BP |
96 | if (!tr.tr_revokes) { |
97 | bool have_revokes; | |
98 | bool log_in_flight; | |
99 | ||
100 | /* | |
101 | * We have nothing on the ail, but there could be revokes on | |
102 | * the sdp revoke queue, in which case, we still want to flush | |
103 | * the log and wait for it to finish. | |
104 | * | |
105 | * If the sdp revoke list is empty too, we might still have an | |
106 | * io outstanding for writing revokes, so we should wait for | |
107 | * it before returning. | |
108 | * | |
109 | * If none of these conditions are true, our revokes are all | |
110 | * flushed and we can return. | |
111 | */ | |
112 | gfs2_log_lock(sdp); | |
113 | have_revokes = !list_empty(&sdp->sd_log_revokes); | |
114 | log_in_flight = atomic_read(&sdp->sd_log_in_flight); | |
115 | gfs2_log_unlock(sdp); | |
116 | if (have_revokes) | |
117 | goto flush; | |
118 | if (log_in_flight) | |
119 | log_flush_wait(sdp); | |
1c634f94 | 120 | return 0; |
9ff78289 | 121 | } |
dba898b0 | 122 | |
24972557 BM |
123 | /* A shortened, inline version of gfs2_trans_begin() |
124 | * tr->alloced is not set since the transaction structure is | |
125 | * on the stack */ | |
2e9eeaa1 | 126 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes); |
d29c0afe | 127 | tr.tr_ip = _RET_IP_; |
1c634f94 BP |
128 | ret = gfs2_log_reserve(sdp, tr.tr_reserved); |
129 | if (ret < 0) | |
130 | return ret; | |
8eae1ca0 | 131 | WARN_ON_ONCE(current->journal_info); |
dba898b0 SW |
132 | current->journal_info = &tr; |
133 | ||
1bc333f4 | 134 | __gfs2_ail_flush(gl, 0, tr.tr_revokes); |
dba898b0 SW |
135 | |
136 | gfs2_trans_end(sdp); | |
9ff78289 | 137 | flush: |
805c0907 BP |
138 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL | |
139 | GFS2_LFC_AIL_EMPTY_GL); | |
1c634f94 | 140 | return 0; |
dba898b0 | 141 | } |
ddacfaf7 | 142 | |
b5b24d7a | 143 | void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) |
dba898b0 | 144 | { |
15562c43 | 145 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
dba898b0 | 146 | unsigned int revokes = atomic_read(&gl->gl_ail_count); |
1bc333f4 | 147 | unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); |
dba898b0 SW |
148 | int ret; |
149 | ||
150 | if (!revokes) | |
151 | return; | |
152 | ||
1bc333f4 BM |
153 | while (revokes > max_revokes) |
154 | max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
155 | ||
156 | ret = gfs2_trans_begin(sdp, 0, max_revokes); | |
dba898b0 SW |
157 | if (ret) |
158 | return; | |
1bc333f4 | 159 | __gfs2_ail_flush(gl, fsync, max_revokes); |
ddacfaf7 | 160 | gfs2_trans_end(sdp); |
805c0907 BP |
161 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL | |
162 | GFS2_LFC_AIL_FLUSH); | |
ddacfaf7 | 163 | } |
ba7f7290 SW |
164 | |
165 | /** | |
6bac243f | 166 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 167 | * @gl: the glock |
b3b94faa DT |
168 | * |
169 | * Called when demoting or unlocking an EX glock. We must flush | |
170 | * to disk all dirty buffers/pages relating to this glock, and must not | |
6f6597ba | 171 | * return to caller to demote/unlock the glock until I/O is complete. |
b3b94faa DT |
172 | */ |
173 | ||
1c634f94 | 174 | static int rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 175 | { |
15562c43 | 176 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
70d4ee94 | 177 | struct address_space *mapping = &sdp->sd_aspace; |
b3422cac | 178 | struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); |
6bac243f SW |
179 | int error; |
180 | ||
181 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
1c634f94 | 182 | return 0; |
8eae1ca0 | 183 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 184 | |
805c0907 BP |
185 | gfs2_log_flush(sdp, gl, GFS2_LOG_HEAD_FLUSH_NORMAL | |
186 | GFS2_LFC_RGRP_GO_SYNC); | |
70d4ee94 SW |
187 | filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
188 | error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
1c634f94 | 189 | WARN_ON_ONCE(error); |
70d4ee94 | 190 | mapping_set_error(mapping, error); |
1c634f94 BP |
191 | if (!error) |
192 | error = gfs2_ail_empty_gl(gl); | |
7c9ca621 | 193 | |
f3dd1649 | 194 | spin_lock(&gl->gl_lockref.lock); |
8339ee54 SW |
195 | rgd = gl->gl_object; |
196 | if (rgd) | |
197 | gfs2_free_clones(rgd); | |
f3dd1649 | 198 | spin_unlock(&gl->gl_lockref.lock); |
1c634f94 | 199 | return error; |
b3b94faa DT |
200 | } |
201 | ||
202 | /** | |
6bac243f | 203 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
204 | * @gl: the glock |
205 | * @flags: | |
206 | * | |
6bac243f SW |
207 | * We never used LM_ST_DEFERRED with resource groups, so that we |
208 | * should always see the metadata flag set here. | |
209 | * | |
b3b94faa DT |
210 | */ |
211 | ||
6bac243f | 212 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 213 | { |
15562c43 | 214 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
70d4ee94 | 215 | struct address_space *mapping = &sdp->sd_aspace; |
6f6597ba | 216 | struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); |
39b0f1e9 BP |
217 | |
218 | if (rgd) | |
219 | gfs2_rgrp_brelse(rgd); | |
b3b94faa | 220 | |
8eae1ca0 | 221 | WARN_ON_ONCE(!(flags & DIO_METADATA)); |
7005c3e4 | 222 | truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
cf45b752 | 223 | |
39b0f1e9 | 224 | if (rgd) |
cf45b752 | 225 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
b3b94faa DT |
226 | } |
227 | ||
4fd1a579 AG |
228 | static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl) |
229 | { | |
230 | struct gfs2_inode *ip; | |
231 | ||
232 | spin_lock(&gl->gl_lockref.lock); | |
233 | ip = gl->gl_object; | |
234 | if (ip) | |
235 | set_bit(GIF_GLOP_PENDING, &ip->i_flags); | |
236 | spin_unlock(&gl->gl_lockref.lock); | |
237 | return ip; | |
238 | } | |
239 | ||
6f6597ba AG |
240 | struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl) |
241 | { | |
242 | struct gfs2_rgrpd *rgd; | |
243 | ||
244 | spin_lock(&gl->gl_lockref.lock); | |
245 | rgd = gl->gl_object; | |
246 | spin_unlock(&gl->gl_lockref.lock); | |
247 | ||
248 | return rgd; | |
249 | } | |
250 | ||
4fd1a579 AG |
251 | static void gfs2_clear_glop_pending(struct gfs2_inode *ip) |
252 | { | |
253 | if (!ip) | |
254 | return; | |
255 | ||
256 | clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags); | |
257 | wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING); | |
258 | } | |
259 | ||
b5d32bea SW |
260 | /** |
261 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
262 | * @gl: the glock protecting the inode | |
263 | * | |
264 | */ | |
265 | ||
1c634f94 | 266 | static int inode_go_sync(struct gfs2_glock *gl) |
b5d32bea | 267 | { |
4fd1a579 AG |
268 | struct gfs2_inode *ip = gfs2_glock2inode(gl); |
269 | int isreg = ip && S_ISREG(ip->i_inode.i_mode); | |
009d8518 | 270 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
1c634f94 | 271 | int error = 0; |
3042a2cc | 272 | |
4fd1a579 | 273 | if (isreg) { |
582d2f7a SW |
274 | if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) |
275 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
276 | inode_dio_wait(&ip->i_inode); | |
277 | } | |
6bac243f | 278 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
4fd1a579 | 279 | goto out; |
b5d32bea | 280 | |
8eae1ca0 | 281 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
6bac243f | 282 | |
805c0907 BP |
283 | gfs2_log_flush(gl->gl_name.ln_sbd, gl, GFS2_LOG_HEAD_FLUSH_NORMAL | |
284 | GFS2_LFC_INODE_GO_SYNC); | |
6bac243f | 285 | filemap_fdatawrite(metamapping); |
4fd1a579 | 286 | if (isreg) { |
6bac243f SW |
287 | struct address_space *mapping = ip->i_inode.i_mapping; |
288 | filemap_fdatawrite(mapping); | |
289 | error = filemap_fdatawait(mapping); | |
290 | mapping_set_error(mapping, error); | |
b5d32bea | 291 | } |
6bac243f SW |
292 | error = filemap_fdatawait(metamapping); |
293 | mapping_set_error(metamapping, error); | |
294 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
295 | /* |
296 | * Writeback of the data mapping may cause the dirty flag to be set | |
297 | * so we have to clear it again here. | |
298 | */ | |
4e857c58 | 299 | smp_mb__before_atomic(); |
52fcd11c | 300 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
4fd1a579 AG |
301 | |
302 | out: | |
303 | gfs2_clear_glop_pending(ip); | |
1c634f94 | 304 | return error; |
b5d32bea SW |
305 | } |
306 | ||
b3b94faa DT |
307 | /** |
308 | * inode_go_inval - prepare a inode glock to be released | |
309 | * @gl: the glock | |
310 | * @flags: | |
6b49d1d9 GU |
311 | * |
312 | * Normally we invalidate everything, but if we are moving into | |
6bac243f SW |
313 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we |
314 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
315 | * |
316 | */ | |
317 | ||
318 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
319 | { | |
4fd1a579 | 320 | struct gfs2_inode *ip = gfs2_glock2inode(gl); |
b3b94faa | 321 | |
6bac243f | 322 | if (flags & DIO_METADATA) { |
009d8518 | 323 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 324 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 325 | if (ip) { |
b004157a | 326 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 327 | forget_all_cached_acls(&ip->i_inode); |
f39814f6 | 328 | security_inode_invalidate_secctx(&ip->i_inode); |
17d539f0 | 329 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 330 | } |
b004157a SW |
331 | } |
332 | ||
15562c43 | 333 | if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) { |
c1696fb8 | 334 | gfs2_log_flush(gl->gl_name.ln_sbd, NULL, |
805c0907 BP |
335 | GFS2_LOG_HEAD_FLUSH_NORMAL | |
336 | GFS2_LFC_INODE_GO_INVAL); | |
15562c43 | 337 | gl->gl_name.ln_sbd->sd_rindex_uptodate = 0; |
1ce53368 | 338 | } |
3cc3f710 | 339 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 340 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
4fd1a579 AG |
341 | |
342 | gfs2_clear_glop_pending(ip); | |
b3b94faa DT |
343 | } |
344 | ||
345 | /** | |
346 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
347 | * @gl: the glock | |
348 | * | |
349 | * Returns: 1 if it's ok | |
350 | */ | |
351 | ||
97cc1025 | 352 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa | 353 | { |
15562c43 | 354 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
bc015cb8 | 355 | |
97cc1025 SW |
356 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
357 | return 0; | |
bc015cb8 | 358 | |
97cc1025 | 359 | return 1; |
b3b94faa DT |
360 | } |
361 | ||
d4b2cf1b SW |
362 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) |
363 | { | |
364 | const struct gfs2_dinode *str = buf; | |
95582b00 | 365 | struct timespec64 atime; |
d4b2cf1b SW |
366 | u16 height, depth; |
367 | ||
368 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
369 | goto corrupt; | |
370 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
371 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
372 | ip->i_inode.i_rdev = 0; | |
373 | switch (ip->i_inode.i_mode & S_IFMT) { | |
374 | case S_IFBLK: | |
375 | case S_IFCHR: | |
376 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
377 | be32_to_cpu(str->di_minor)); | |
378 | break; | |
098b9c14 | 379 | } |
d4b2cf1b | 380 | |
d0546426 EB |
381 | i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); |
382 | i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); | |
eebd2e81 | 383 | set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); |
d4b2cf1b SW |
384 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); |
385 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
386 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
387 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
95582b00 | 388 | if (timespec64_compare(&ip->i_inode.i_atime, &atime) < 0) |
d4b2cf1b SW |
389 | ip->i_inode.i_atime = atime; |
390 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
391 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
392 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
393 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
394 | ||
395 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
396 | ip->i_generation = be64_to_cpu(str->di_generation); | |
397 | ||
398 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
399 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
400 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
401 | gfs2_set_inode_flags(&ip->i_inode); |
402 | height = be16_to_cpu(str->di_height); | |
403 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
404 | goto corrupt; | |
405 | ip->i_height = (u8)height; | |
406 | ||
407 | depth = be16_to_cpu(str->di_depth); | |
408 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
409 | goto corrupt; | |
410 | ip->i_depth = (u8)depth; | |
411 | ip->i_entries = be32_to_cpu(str->di_entries); | |
412 | ||
d4b2cf1b SW |
413 | if (S_ISREG(ip->i_inode.i_mode)) |
414 | gfs2_set_aops(&ip->i_inode); | |
415 | ||
416 | return 0; | |
417 | corrupt: | |
418 | gfs2_consist_inode(ip); | |
419 | return -EIO; | |
420 | } | |
421 | ||
422 | /** | |
423 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
424 | * @ip: The GFS2 inode | |
425 | * | |
426 | * Returns: errno | |
427 | */ | |
428 | ||
429 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
430 | { | |
431 | struct buffer_head *dibh; | |
432 | int error; | |
433 | ||
434 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
435 | if (error) | |
436 | return error; | |
437 | ||
d4b2cf1b SW |
438 | error = gfs2_dinode_in(ip, dibh->b_data); |
439 | brelse(dibh); | |
440 | clear_bit(GIF_INVALID, &ip->i_flags); | |
441 | ||
442 | return error; | |
443 | } | |
444 | ||
b3b94faa DT |
445 | /** |
446 | * inode_go_lock - operation done after an inode lock is locked by a process | |
447 | * @gl: the glock | |
448 | * @flags: | |
449 | * | |
450 | * Returns: errno | |
451 | */ | |
452 | ||
453 | static int inode_go_lock(struct gfs2_holder *gh) | |
454 | { | |
455 | struct gfs2_glock *gl = gh->gh_gl; | |
15562c43 | 456 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
5c676f6d | 457 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
458 | int error = 0; |
459 | ||
091806ed | 460 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
461 | return 0; |
462 | ||
bfded27b | 463 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
464 | error = gfs2_inode_refresh(ip); |
465 | if (error) | |
466 | return error; | |
b3b94faa DT |
467 | } |
468 | ||
582d2f7a SW |
469 | if (gh->gh_state != LM_ST_DEFERRED) |
470 | inode_dio_wait(&ip->i_inode); | |
471 | ||
383f01fb | 472 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 473 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
474 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
475 | spin_lock(&sdp->sd_trunc_lock); | |
476 | if (list_empty(&ip->i_trunc_list)) | |
e7cb550d | 477 | list_add(&ip->i_trunc_list, &sdp->sd_trunc_list); |
813e0c46 SW |
478 | spin_unlock(&sdp->sd_trunc_lock); |
479 | wake_up(&sdp->sd_quota_wait); | |
480 | return 1; | |
481 | } | |
b3b94faa DT |
482 | |
483 | return error; | |
484 | } | |
485 | ||
6802e340 SW |
486 | /** |
487 | * inode_go_dump - print information about an inode | |
488 | * @seq: The iterator | |
489 | * @ip: the inode | |
3792ce97 | 490 | * @fs_id_buf: file system id (may be empty) |
6802e340 | 491 | * |
6802e340 SW |
492 | */ |
493 | ||
3792ce97 BP |
494 | static void inode_go_dump(struct seq_file *seq, struct gfs2_glock *gl, |
495 | const char *fs_id_buf) | |
6802e340 | 496 | { |
27a2660f BP |
497 | struct gfs2_inode *ip = gl->gl_object; |
498 | struct inode *inode = &ip->i_inode; | |
499 | unsigned long nrpages; | |
500 | ||
6802e340 | 501 | if (ip == NULL) |
ac3beb6a | 502 | return; |
27a2660f BP |
503 | |
504 | xa_lock_irq(&inode->i_data.i_pages); | |
505 | nrpages = inode->i_data.nrpages; | |
506 | xa_unlock_irq(&inode->i_data.i_pages); | |
507 | ||
3792ce97 BP |
508 | gfs2_print_dbg(seq, "%s I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu " |
509 | "p:%lu\n", fs_id_buf, | |
6802e340 SW |
510 | (unsigned long long)ip->i_no_formal_ino, |
511 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
512 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
513 | (unsigned int)ip->i_diskflags, | |
27a2660f | 514 | (unsigned long long)i_size_read(inode), nrpages); |
6802e340 SW |
515 | } |
516 | ||
b3b94faa | 517 | /** |
24972557 | 518 | * freeze_go_sync - promote/demote the freeze glock |
b3b94faa DT |
519 | * @gl: the glock |
520 | * @state: the requested state | |
521 | * @flags: | |
522 | * | |
523 | */ | |
524 | ||
1c634f94 | 525 | static int freeze_go_sync(struct gfs2_glock *gl) |
b3b94faa | 526 | { |
2e60d768 | 527 | int error = 0; |
15562c43 | 528 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
b3b94faa | 529 | |
601ef0d5 | 530 | if (gl->gl_state == LM_ST_SHARED && !gfs2_withdrawn(sdp) && |
b3b94faa | 531 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
2e60d768 BM |
532 | atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE); |
533 | error = freeze_super(sdp->sd_vfs); | |
534 | if (error) { | |
f29e62ee BP |
535 | fs_info(sdp, "GFS2: couldn't freeze filesystem: %d\n", |
536 | error); | |
601ef0d5 BP |
537 | if (gfs2_withdrawn(sdp)) { |
538 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); | |
1c634f94 | 539 | return 0; |
601ef0d5 | 540 | } |
2e60d768 BM |
541 | gfs2_assert_withdraw(sdp, 0); |
542 | } | |
543 | queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work); | |
805c0907 BP |
544 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_FREEZE | |
545 | GFS2_LFC_FREEZE_GO_SYNC); | |
b3b94faa | 546 | } |
1c634f94 | 547 | return 0; |
b3b94faa DT |
548 | } |
549 | ||
550 | /** | |
24972557 | 551 | * freeze_go_xmote_bh - After promoting/demoting the freeze glock |
b3b94faa DT |
552 | * @gl: the glock |
553 | * | |
554 | */ | |
555 | ||
24972557 | 556 | static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa | 557 | { |
15562c43 | 558 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
feaa7bba | 559 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 560 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 561 | struct gfs2_log_header_host head; |
b3b94faa DT |
562 | int error; |
563 | ||
6802e340 | 564 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 565 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa | 566 | |
f4686c26 | 567 | error = gfs2_find_jhead(sdp->sd_jdesc, &head, false); |
b3b94faa DT |
568 | if (error) |
569 | gfs2_consist(sdp); | |
570 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
571 | gfs2_consist(sdp); | |
572 | ||
573 | /* Initialize some head of the log stuff */ | |
eb43e660 | 574 | if (!gfs2_withdrawn(sdp)) { |
b3b94faa DT |
575 | sdp->sd_log_sequence = head.lh_sequence + 1; |
576 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
577 | } | |
578 | } | |
6802e340 | 579 | return 0; |
b3b94faa DT |
580 | } |
581 | ||
97cc1025 SW |
582 | /** |
583 | * trans_go_demote_ok | |
584 | * @gl: the glock | |
585 | * | |
586 | * Always returns 0 | |
587 | */ | |
588 | ||
24972557 | 589 | static int freeze_go_demote_ok(const struct gfs2_glock *gl) |
97cc1025 SW |
590 | { |
591 | return 0; | |
592 | } | |
593 | ||
b94a170e BM |
594 | /** |
595 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
596 | * @gl: the glock | |
597 | * | |
f3dd1649 | 598 | * gl_lockref.lock lock is held while calling this |
b94a170e | 599 | */ |
81ffbf65 | 600 | static void iopen_go_callback(struct gfs2_glock *gl, bool remote) |
b94a170e | 601 | { |
6f6597ba | 602 | struct gfs2_inode *ip = gl->gl_object; |
15562c43 | 603 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
001e8e8d | 604 | |
bc98a42c | 605 | if (!remote || sb_rdonly(sdp->sd_vfs)) |
001e8e8d | 606 | return; |
b94a170e BM |
607 | |
608 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 609 | gl->gl_state == LM_ST_SHARED && ip) { |
e66cf161 | 610 | gl->gl_lockref.count++; |
b94a170e | 611 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
e66cf161 | 612 | gl->gl_lockref.count--; |
b94a170e BM |
613 | } |
614 | } | |
615 | ||
601ef0d5 BP |
616 | /** |
617 | * inode_go_free - wake up anyone waiting for dlm's unlock ast to free it | |
618 | * @gl: glock being freed | |
619 | * | |
620 | * For now, this is only used for the journal inode glock. In withdraw | |
621 | * situations, we need to wait for the glock to be freed so that we know | |
622 | * other nodes may proceed with recovery / journal replay. | |
623 | */ | |
624 | static void inode_go_free(struct gfs2_glock *gl) | |
625 | { | |
626 | /* Note that we cannot reference gl_object because it's already set | |
627 | * to NULL by this point in its lifecycle. */ | |
628 | if (!test_bit(GLF_FREEING, &gl->gl_flags)) | |
629 | return; | |
630 | clear_bit_unlock(GLF_FREEING, &gl->gl_flags); | |
631 | wake_up_bit(&gl->gl_flags, GLF_FREEING); | |
632 | } | |
633 | ||
634 | /** | |
635 | * nondisk_go_callback - used to signal when a node did a withdraw | |
636 | * @gl: the nondisk glock | |
637 | * @remote: true if this came from a different cluster node | |
638 | * | |
639 | */ | |
640 | static void nondisk_go_callback(struct gfs2_glock *gl, bool remote) | |
641 | { | |
642 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; | |
643 | ||
644 | /* Ignore the callback unless it's from another node, and it's the | |
645 | live lock. */ | |
646 | if (!remote || gl->gl_name.ln_number != GFS2_LIVE_LOCK) | |
647 | return; | |
648 | ||
649 | /* First order of business is to cancel the demote request. We don't | |
650 | * really want to demote a nondisk glock. At best it's just to inform | |
651 | * us of another node's withdraw. We'll keep it in SH mode. */ | |
652 | clear_bit(GLF_DEMOTE, &gl->gl_flags); | |
653 | clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags); | |
654 | ||
655 | /* Ignore the unlock if we're withdrawn, unmounting, or in recovery. */ | |
656 | if (test_bit(SDF_NORECOVERY, &sdp->sd_flags) || | |
657 | test_bit(SDF_WITHDRAWN, &sdp->sd_flags) || | |
658 | test_bit(SDF_REMOTE_WITHDRAW, &sdp->sd_flags)) | |
659 | return; | |
660 | ||
661 | /* We only care when a node wants us to unlock, because that means | |
662 | * they want a journal recovered. */ | |
663 | if (gl->gl_demote_state != LM_ST_UNLOCKED) | |
664 | return; | |
665 | ||
666 | if (sdp->sd_args.ar_spectator) { | |
667 | fs_warn(sdp, "Spectator node cannot recover journals.\n"); | |
668 | return; | |
669 | } | |
670 | ||
671 | fs_warn(sdp, "Some node has withdrawn; checking for recovery.\n"); | |
672 | set_bit(SDF_REMOTE_WITHDRAW, &sdp->sd_flags); | |
673 | /* | |
674 | * We can't call remote_withdraw directly here or gfs2_recover_journal | |
675 | * because this is called from the glock unlock function and the | |
676 | * remote_withdraw needs to enqueue and dequeue the same "live" glock | |
677 | * we were called from. So we queue it to the control work queue in | |
678 | * lock_dlm. | |
679 | */ | |
680 | queue_delayed_work(gfs2_control_wq, &sdp->sd_control_work, 0); | |
681 | } | |
682 | ||
8fb4b536 | 683 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 684 | .go_type = LM_TYPE_META, |
a72d2401 | 685 | .go_flags = GLOF_NONDISK, |
b3b94faa DT |
686 | }; |
687 | ||
8fb4b536 | 688 | const struct gfs2_glock_operations gfs2_inode_glops = { |
06dfc306 | 689 | .go_sync = inode_go_sync, |
b3b94faa DT |
690 | .go_inval = inode_go_inval, |
691 | .go_demote_ok = inode_go_demote_ok, | |
692 | .go_lock = inode_go_lock, | |
6802e340 | 693 | .go_dump = inode_go_dump, |
ea67eedb | 694 | .go_type = LM_TYPE_INODE, |
e7ccaf5f | 695 | .go_flags = GLOF_ASPACE | GLOF_LRU, |
601ef0d5 | 696 | .go_free = inode_go_free, |
b3b94faa DT |
697 | }; |
698 | ||
8fb4b536 | 699 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
06dfc306 | 700 | .go_sync = rgrp_go_sync, |
6bac243f | 701 | .go_inval = rgrp_go_inval, |
7c9ca621 | 702 | .go_lock = gfs2_rgrp_go_lock, |
09010978 | 703 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 704 | .go_type = LM_TYPE_RGRP, |
70d4ee94 | 705 | .go_flags = GLOF_LVB, |
b3b94faa DT |
706 | }; |
707 | ||
24972557 BM |
708 | const struct gfs2_glock_operations gfs2_freeze_glops = { |
709 | .go_sync = freeze_go_sync, | |
710 | .go_xmote_bh = freeze_go_xmote_bh, | |
711 | .go_demote_ok = freeze_go_demote_ok, | |
ea67eedb | 712 | .go_type = LM_TYPE_NONDISK, |
a72d2401 | 713 | .go_flags = GLOF_NONDISK, |
b3b94faa DT |
714 | }; |
715 | ||
8fb4b536 | 716 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 717 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 718 | .go_callback = iopen_go_callback, |
a72d2401 | 719 | .go_flags = GLOF_LRU | GLOF_NONDISK, |
b3b94faa DT |
720 | }; |
721 | ||
8fb4b536 | 722 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 723 | .go_type = LM_TYPE_FLOCK, |
a72d2401 | 724 | .go_flags = GLOF_LRU | GLOF_NONDISK, |
b3b94faa DT |
725 | }; |
726 | ||
8fb4b536 | 727 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 728 | .go_type = LM_TYPE_NONDISK, |
a72d2401 | 729 | .go_flags = GLOF_NONDISK, |
601ef0d5 | 730 | .go_callback = nondisk_go_callback, |
b3b94faa DT |
731 | }; |
732 | ||
8fb4b536 | 733 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 734 | .go_type = LM_TYPE_QUOTA, |
a72d2401 | 735 | .go_flags = GLOF_LVB | GLOF_LRU | GLOF_NONDISK, |
b3b94faa DT |
736 | }; |
737 | ||
8fb4b536 | 738 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 739 | .go_type = LM_TYPE_JOURNAL, |
a72d2401 | 740 | .go_flags = GLOF_NONDISK, |
b3b94faa DT |
741 | }; |
742 | ||
64d576ba SW |
743 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
744 | [LM_TYPE_META] = &gfs2_meta_glops, | |
745 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
746 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
747 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
748 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
749 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
750 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
751 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
752 | }; | |
753 |