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