Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/spinlock.h> |
11 | #include <linux/completion.h> | |
12 | #include <linux/buffer_head.h> | |
5c676f6d | 13 | #include <linux/gfs2_ondisk.h> |
6802e340 | 14 | #include <linux/bio.h> |
c65f7fb5 | 15 | #include <linux/posix_acl.h> |
f39814f6 | 16 | #include <linux/security.h> |
b3b94faa DT |
17 | |
18 | #include "gfs2.h" | |
5c676f6d | 19 | #include "incore.h" |
b3b94faa DT |
20 | #include "bmap.h" |
21 | #include "glock.h" | |
22 | #include "glops.h" | |
23 | #include "inode.h" | |
24 | #include "log.h" | |
25 | #include "meta_io.h" | |
b3b94faa DT |
26 | #include "recovery.h" |
27 | #include "rgrp.h" | |
5c676f6d | 28 | #include "util.h" |
ddacfaf7 | 29 | #include "trans.h" |
17d539f0 | 30 | #include "dir.h" |
b3b94faa | 31 | |
2e60d768 BM |
32 | struct workqueue_struct *gfs2_freeze_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)); | |
15562c43 | 44 | gfs2_lm_withdraw(gl->gl_name.ln_sbd, "AIL error\n"); |
75549186 SW |
45 | } |
46 | ||
ddacfaf7 | 47 | /** |
dba898b0 | 48 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 | 49 | * @gl: the glock |
b5b24d7a | 50 | * @fsync: set when called from fsync (not all buffers will be clean) |
ddacfaf7 SW |
51 | * |
52 | * None of the buffers should be dirty, locked, or pinned. | |
53 | */ | |
54 | ||
1bc333f4 BM |
55 | static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync, |
56 | unsigned int nr_revokes) | |
ddacfaf7 | 57 | { |
15562c43 | 58 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
ddacfaf7 | 59 | struct list_head *head = &gl->gl_ail_list; |
b5b24d7a | 60 | struct gfs2_bufdata *bd, *tmp; |
ddacfaf7 | 61 | struct buffer_head *bh; |
b5b24d7a | 62 | const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); |
d8348de0 | 63 | |
b5b24d7a | 64 | gfs2_log_lock(sdp); |
d6a079e8 | 65 | spin_lock(&sdp->sd_ail_lock); |
1bc333f4 BM |
66 | list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) { |
67 | if (nr_revokes == 0) | |
68 | break; | |
ddacfaf7 | 69 | bh = bd->bd_bh; |
b5b24d7a SW |
70 | if (bh->b_state & b_state) { |
71 | if (fsync) | |
72 | continue; | |
75549186 | 73 | gfs2_ail_error(gl, bh); |
b5b24d7a | 74 | } |
1ad38c43 | 75 | gfs2_trans_add_revoke(sdp, bd); |
1bc333f4 | 76 | nr_revokes--; |
ddacfaf7 | 77 | } |
8eae1ca0 | 78 | GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); |
d6a079e8 | 79 | spin_unlock(&sdp->sd_ail_lock); |
b5b24d7a | 80 | gfs2_log_unlock(sdp); |
dba898b0 SW |
81 | } |
82 | ||
83 | ||
84 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) | |
85 | { | |
15562c43 | 86 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
dba898b0 SW |
87 | struct gfs2_trans tr; |
88 | ||
89 | memset(&tr, 0, sizeof(tr)); | |
d69a3c65 SW |
90 | INIT_LIST_HEAD(&tr.tr_buf); |
91 | INIT_LIST_HEAD(&tr.tr_databuf); | |
dba898b0 SW |
92 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); |
93 | ||
94 | if (!tr.tr_revokes) | |
95 | return; | |
96 | ||
24972557 BM |
97 | /* A shortened, inline version of gfs2_trans_begin() |
98 | * tr->alloced is not set since the transaction structure is | |
99 | * on the stack */ | |
dba898b0 | 100 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); |
d29c0afe | 101 | tr.tr_ip = _RET_IP_; |
2e60d768 | 102 | if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) |
24972557 | 103 | return; |
8eae1ca0 | 104 | WARN_ON_ONCE(current->journal_info); |
dba898b0 SW |
105 | current->journal_info = &tr; |
106 | ||
1bc333f4 | 107 | __gfs2_ail_flush(gl, 0, tr.tr_revokes); |
dba898b0 SW |
108 | |
109 | gfs2_trans_end(sdp); | |
24972557 | 110 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
dba898b0 | 111 | } |
ddacfaf7 | 112 | |
b5b24d7a | 113 | void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) |
dba898b0 | 114 | { |
15562c43 | 115 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
dba898b0 | 116 | unsigned int revokes = atomic_read(&gl->gl_ail_count); |
1bc333f4 | 117 | unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); |
dba898b0 SW |
118 | int ret; |
119 | ||
120 | if (!revokes) | |
121 | return; | |
122 | ||
1bc333f4 BM |
123 | while (revokes > max_revokes) |
124 | max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
125 | ||
126 | ret = gfs2_trans_begin(sdp, 0, max_revokes); | |
dba898b0 SW |
127 | if (ret) |
128 | return; | |
1bc333f4 | 129 | __gfs2_ail_flush(gl, fsync, max_revokes); |
ddacfaf7 | 130 | gfs2_trans_end(sdp); |
24972557 | 131 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
ddacfaf7 | 132 | } |
ba7f7290 SW |
133 | |
134 | /** | |
6bac243f | 135 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 136 | * @gl: the glock |
b3b94faa DT |
137 | * |
138 | * Called when demoting or unlocking an EX glock. We must flush | |
139 | * to disk all dirty buffers/pages relating to this glock, and must not | |
6f6597ba | 140 | * return to caller to demote/unlock the glock until I/O is complete. |
b3b94faa DT |
141 | */ |
142 | ||
6bac243f | 143 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 144 | { |
15562c43 | 145 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
70d4ee94 | 146 | struct address_space *mapping = &sdp->sd_aspace; |
8339ee54 | 147 | struct gfs2_rgrpd *rgd; |
6bac243f SW |
148 | int error; |
149 | ||
f3dd1649 | 150 | spin_lock(&gl->gl_lockref.lock); |
39b0f1e9 BP |
151 | rgd = gl->gl_object; |
152 | if (rgd) | |
153 | gfs2_rgrp_brelse(rgd); | |
f3dd1649 | 154 | spin_unlock(&gl->gl_lockref.lock); |
39b0f1e9 | 155 | |
6bac243f | 156 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
b5d32bea | 157 | return; |
8eae1ca0 | 158 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 159 | |
24972557 | 160 | gfs2_log_flush(sdp, gl, NORMAL_FLUSH); |
70d4ee94 SW |
161 | filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
162 | error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
163 | mapping_set_error(mapping, error); | |
6bac243f | 164 | gfs2_ail_empty_gl(gl); |
7c9ca621 | 165 | |
f3dd1649 | 166 | spin_lock(&gl->gl_lockref.lock); |
8339ee54 SW |
167 | rgd = gl->gl_object; |
168 | if (rgd) | |
169 | gfs2_free_clones(rgd); | |
f3dd1649 | 170 | spin_unlock(&gl->gl_lockref.lock); |
b3b94faa DT |
171 | } |
172 | ||
173 | /** | |
6bac243f | 174 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
175 | * @gl: the glock |
176 | * @flags: | |
177 | * | |
6bac243f SW |
178 | * We never used LM_ST_DEFERRED with resource groups, so that we |
179 | * should always see the metadata flag set here. | |
180 | * | |
b3b94faa DT |
181 | */ |
182 | ||
6bac243f | 183 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 184 | { |
15562c43 | 185 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
70d4ee94 | 186 | struct address_space *mapping = &sdp->sd_aspace; |
6f6597ba | 187 | struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); |
39b0f1e9 BP |
188 | |
189 | if (rgd) | |
190 | gfs2_rgrp_brelse(rgd); | |
b3b94faa | 191 | |
8eae1ca0 | 192 | WARN_ON_ONCE(!(flags & DIO_METADATA)); |
70d4ee94 | 193 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
7005c3e4 | 194 | truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
cf45b752 | 195 | |
39b0f1e9 | 196 | if (rgd) |
cf45b752 | 197 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
b3b94faa DT |
198 | } |
199 | ||
4fd1a579 AG |
200 | static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl) |
201 | { | |
202 | struct gfs2_inode *ip; | |
203 | ||
204 | spin_lock(&gl->gl_lockref.lock); | |
205 | ip = gl->gl_object; | |
206 | if (ip) | |
207 | set_bit(GIF_GLOP_PENDING, &ip->i_flags); | |
208 | spin_unlock(&gl->gl_lockref.lock); | |
209 | return ip; | |
210 | } | |
211 | ||
6f6597ba AG |
212 | struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl) |
213 | { | |
214 | struct gfs2_rgrpd *rgd; | |
215 | ||
216 | spin_lock(&gl->gl_lockref.lock); | |
217 | rgd = gl->gl_object; | |
218 | spin_unlock(&gl->gl_lockref.lock); | |
219 | ||
220 | return rgd; | |
221 | } | |
222 | ||
4fd1a579 AG |
223 | static void gfs2_clear_glop_pending(struct gfs2_inode *ip) |
224 | { | |
225 | if (!ip) | |
226 | return; | |
227 | ||
228 | clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags); | |
229 | wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING); | |
230 | } | |
231 | ||
b5d32bea SW |
232 | /** |
233 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
234 | * @gl: the glock protecting the inode | |
235 | * | |
236 | */ | |
237 | ||
238 | static void inode_go_sync(struct gfs2_glock *gl) | |
239 | { | |
4fd1a579 AG |
240 | struct gfs2_inode *ip = gfs2_glock2inode(gl); |
241 | int isreg = ip && S_ISREG(ip->i_inode.i_mode); | |
009d8518 | 242 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
243 | int error; |
244 | ||
4fd1a579 | 245 | if (isreg) { |
582d2f7a SW |
246 | if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) |
247 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
248 | inode_dio_wait(&ip->i_inode); | |
249 | } | |
6bac243f | 250 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
4fd1a579 | 251 | goto out; |
b5d32bea | 252 | |
8eae1ca0 | 253 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
6bac243f | 254 | |
15562c43 | 255 | gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH); |
6bac243f | 256 | filemap_fdatawrite(metamapping); |
4fd1a579 | 257 | if (isreg) { |
6bac243f SW |
258 | struct address_space *mapping = ip->i_inode.i_mapping; |
259 | filemap_fdatawrite(mapping); | |
260 | error = filemap_fdatawait(mapping); | |
261 | mapping_set_error(mapping, error); | |
b5d32bea | 262 | } |
6bac243f SW |
263 | error = filemap_fdatawait(metamapping); |
264 | mapping_set_error(metamapping, error); | |
265 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
266 | /* |
267 | * Writeback of the data mapping may cause the dirty flag to be set | |
268 | * so we have to clear it again here. | |
269 | */ | |
4e857c58 | 270 | smp_mb__before_atomic(); |
52fcd11c | 271 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
4fd1a579 AG |
272 | |
273 | out: | |
274 | gfs2_clear_glop_pending(ip); | |
b5d32bea SW |
275 | } |
276 | ||
b3b94faa DT |
277 | /** |
278 | * inode_go_inval - prepare a inode glock to be released | |
279 | * @gl: the glock | |
280 | * @flags: | |
6b49d1d9 GU |
281 | * |
282 | * Normally we invalidate everything, but if we are moving into | |
6bac243f SW |
283 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we |
284 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
285 | * |
286 | */ | |
287 | ||
288 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
289 | { | |
4fd1a579 | 290 | struct gfs2_inode *ip = gfs2_glock2inode(gl); |
b3b94faa | 291 | |
15562c43 | 292 | gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count)); |
6bac243f SW |
293 | |
294 | if (flags & DIO_METADATA) { | |
009d8518 | 295 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 296 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 297 | if (ip) { |
b004157a | 298 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 299 | forget_all_cached_acls(&ip->i_inode); |
f39814f6 | 300 | security_inode_invalidate_secctx(&ip->i_inode); |
17d539f0 | 301 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 302 | } |
b004157a SW |
303 | } |
304 | ||
15562c43 BP |
305 | if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) { |
306 | gfs2_log_flush(gl->gl_name.ln_sbd, NULL, NORMAL_FLUSH); | |
307 | gl->gl_name.ln_sbd->sd_rindex_uptodate = 0; | |
1ce53368 | 308 | } |
3cc3f710 | 309 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 310 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
4fd1a579 AG |
311 | |
312 | gfs2_clear_glop_pending(ip); | |
b3b94faa DT |
313 | } |
314 | ||
315 | /** | |
316 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
317 | * @gl: the glock | |
318 | * | |
319 | * Returns: 1 if it's ok | |
320 | */ | |
321 | ||
97cc1025 | 322 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa | 323 | { |
15562c43 | 324 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
bc015cb8 | 325 | |
97cc1025 SW |
326 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
327 | return 0; | |
bc015cb8 | 328 | |
97cc1025 | 329 | return 1; |
b3b94faa DT |
330 | } |
331 | ||
d4b2cf1b SW |
332 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) |
333 | { | |
334 | const struct gfs2_dinode *str = buf; | |
335 | struct timespec atime; | |
336 | u16 height, depth; | |
337 | ||
338 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
339 | goto corrupt; | |
340 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
341 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
342 | ip->i_inode.i_rdev = 0; | |
343 | switch (ip->i_inode.i_mode & S_IFMT) { | |
344 | case S_IFBLK: | |
345 | case S_IFCHR: | |
346 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
347 | be32_to_cpu(str->di_minor)); | |
348 | break; | |
349 | }; | |
350 | ||
d0546426 EB |
351 | i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); |
352 | i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); | |
eebd2e81 | 353 | set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); |
d4b2cf1b SW |
354 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); |
355 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
356 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
357 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
358 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
359 | ip->i_inode.i_atime = atime; | |
360 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
361 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
362 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
363 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
364 | ||
365 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
366 | ip->i_generation = be64_to_cpu(str->di_generation); | |
367 | ||
368 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
369 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
370 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
371 | gfs2_set_inode_flags(&ip->i_inode); |
372 | height = be16_to_cpu(str->di_height); | |
373 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
374 | goto corrupt; | |
375 | ip->i_height = (u8)height; | |
376 | ||
377 | depth = be16_to_cpu(str->di_depth); | |
378 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
379 | goto corrupt; | |
380 | ip->i_depth = (u8)depth; | |
381 | ip->i_entries = be32_to_cpu(str->di_entries); | |
382 | ||
d4b2cf1b SW |
383 | if (S_ISREG(ip->i_inode.i_mode)) |
384 | gfs2_set_aops(&ip->i_inode); | |
385 | ||
386 | return 0; | |
387 | corrupt: | |
388 | gfs2_consist_inode(ip); | |
389 | return -EIO; | |
390 | } | |
391 | ||
392 | /** | |
393 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
394 | * @ip: The GFS2 inode | |
395 | * | |
396 | * Returns: errno | |
397 | */ | |
398 | ||
399 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
400 | { | |
401 | struct buffer_head *dibh; | |
402 | int error; | |
403 | ||
404 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
405 | if (error) | |
406 | return error; | |
407 | ||
d4b2cf1b SW |
408 | error = gfs2_dinode_in(ip, dibh->b_data); |
409 | brelse(dibh); | |
410 | clear_bit(GIF_INVALID, &ip->i_flags); | |
411 | ||
412 | return error; | |
413 | } | |
414 | ||
b3b94faa DT |
415 | /** |
416 | * inode_go_lock - operation done after an inode lock is locked by a process | |
417 | * @gl: the glock | |
418 | * @flags: | |
419 | * | |
420 | * Returns: errno | |
421 | */ | |
422 | ||
423 | static int inode_go_lock(struct gfs2_holder *gh) | |
424 | { | |
425 | struct gfs2_glock *gl = gh->gh_gl; | |
15562c43 | 426 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
5c676f6d | 427 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
428 | int error = 0; |
429 | ||
091806ed | 430 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
431 | return 0; |
432 | ||
bfded27b | 433 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
434 | error = gfs2_inode_refresh(ip); |
435 | if (error) | |
436 | return error; | |
b3b94faa DT |
437 | } |
438 | ||
582d2f7a SW |
439 | if (gh->gh_state != LM_ST_DEFERRED) |
440 | inode_dio_wait(&ip->i_inode); | |
441 | ||
383f01fb | 442 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 443 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
444 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
445 | spin_lock(&sdp->sd_trunc_lock); | |
446 | if (list_empty(&ip->i_trunc_list)) | |
e7cb550d | 447 | list_add(&ip->i_trunc_list, &sdp->sd_trunc_list); |
813e0c46 SW |
448 | spin_unlock(&sdp->sd_trunc_lock); |
449 | wake_up(&sdp->sd_quota_wait); | |
450 | return 1; | |
451 | } | |
b3b94faa DT |
452 | |
453 | return error; | |
454 | } | |
455 | ||
6802e340 SW |
456 | /** |
457 | * inode_go_dump - print information about an inode | |
458 | * @seq: The iterator | |
459 | * @ip: the inode | |
460 | * | |
6802e340 SW |
461 | */ |
462 | ||
ac3beb6a | 463 | static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) |
6802e340 SW |
464 | { |
465 | const struct gfs2_inode *ip = gl->gl_object; | |
466 | if (ip == NULL) | |
ac3beb6a | 467 | return; |
a2e0f799 | 468 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
469 | (unsigned long long)ip->i_no_formal_ino, |
470 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
471 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
472 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 473 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
474 | } |
475 | ||
b3b94faa | 476 | /** |
24972557 | 477 | * freeze_go_sync - promote/demote the freeze glock |
b3b94faa DT |
478 | * @gl: the glock |
479 | * @state: the requested state | |
480 | * @flags: | |
481 | * | |
482 | */ | |
483 | ||
24972557 | 484 | static void freeze_go_sync(struct gfs2_glock *gl) |
b3b94faa | 485 | { |
2e60d768 | 486 | int error = 0; |
15562c43 | 487 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
b3b94faa | 488 | |
24972557 | 489 | if (gl->gl_state == LM_ST_SHARED && |
b3b94faa | 490 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
2e60d768 BM |
491 | atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE); |
492 | error = freeze_super(sdp->sd_vfs); | |
493 | if (error) { | |
494 | printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error); | |
495 | gfs2_assert_withdraw(sdp, 0); | |
496 | } | |
497 | queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work); | |
498 | gfs2_log_flush(sdp, NULL, FREEZE_FLUSH); | |
b3b94faa | 499 | } |
b3b94faa DT |
500 | } |
501 | ||
502 | /** | |
24972557 | 503 | * freeze_go_xmote_bh - After promoting/demoting the freeze glock |
b3b94faa DT |
504 | * @gl: the glock |
505 | * | |
506 | */ | |
507 | ||
24972557 | 508 | static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa | 509 | { |
15562c43 | 510 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
feaa7bba | 511 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 512 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 513 | struct gfs2_log_header_host head; |
b3b94faa DT |
514 | int error; |
515 | ||
6802e340 | 516 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 517 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
518 | |
519 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
520 | if (error) | |
521 | gfs2_consist(sdp); | |
522 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
523 | gfs2_consist(sdp); | |
524 | ||
525 | /* Initialize some head of the log stuff */ | |
526 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
527 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
528 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
529 | } | |
530 | } | |
6802e340 | 531 | return 0; |
b3b94faa DT |
532 | } |
533 | ||
97cc1025 SW |
534 | /** |
535 | * trans_go_demote_ok | |
536 | * @gl: the glock | |
537 | * | |
538 | * Always returns 0 | |
539 | */ | |
540 | ||
24972557 | 541 | static int freeze_go_demote_ok(const struct gfs2_glock *gl) |
97cc1025 SW |
542 | { |
543 | return 0; | |
544 | } | |
545 | ||
b94a170e BM |
546 | /** |
547 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
548 | * @gl: the glock | |
549 | * | |
f3dd1649 | 550 | * gl_lockref.lock lock is held while calling this |
b94a170e | 551 | */ |
81ffbf65 | 552 | static void iopen_go_callback(struct gfs2_glock *gl, bool remote) |
b94a170e | 553 | { |
6f6597ba | 554 | struct gfs2_inode *ip = gl->gl_object; |
15562c43 | 555 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
001e8e8d | 556 | |
bc98a42c | 557 | if (!remote || sb_rdonly(sdp->sd_vfs)) |
001e8e8d | 558 | return; |
b94a170e BM |
559 | |
560 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 561 | gl->gl_state == LM_ST_SHARED && ip) { |
e66cf161 | 562 | gl->gl_lockref.count++; |
b94a170e | 563 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
e66cf161 | 564 | gl->gl_lockref.count--; |
b94a170e BM |
565 | } |
566 | } | |
567 | ||
8fb4b536 | 568 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 569 | .go_type = LM_TYPE_META, |
b3b94faa DT |
570 | }; |
571 | ||
8fb4b536 | 572 | const struct gfs2_glock_operations gfs2_inode_glops = { |
06dfc306 | 573 | .go_sync = inode_go_sync, |
b3b94faa DT |
574 | .go_inval = inode_go_inval, |
575 | .go_demote_ok = inode_go_demote_ok, | |
576 | .go_lock = inode_go_lock, | |
6802e340 | 577 | .go_dump = inode_go_dump, |
ea67eedb | 578 | .go_type = LM_TYPE_INODE, |
e7ccaf5f | 579 | .go_flags = GLOF_ASPACE | GLOF_LRU, |
b3b94faa DT |
580 | }; |
581 | ||
8fb4b536 | 582 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
06dfc306 | 583 | .go_sync = rgrp_go_sync, |
6bac243f | 584 | .go_inval = rgrp_go_inval, |
7c9ca621 BP |
585 | .go_lock = gfs2_rgrp_go_lock, |
586 | .go_unlock = gfs2_rgrp_go_unlock, | |
09010978 | 587 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 588 | .go_type = LM_TYPE_RGRP, |
70d4ee94 | 589 | .go_flags = GLOF_LVB, |
b3b94faa DT |
590 | }; |
591 | ||
24972557 BM |
592 | const struct gfs2_glock_operations gfs2_freeze_glops = { |
593 | .go_sync = freeze_go_sync, | |
594 | .go_xmote_bh = freeze_go_xmote_bh, | |
595 | .go_demote_ok = freeze_go_demote_ok, | |
ea67eedb | 596 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
597 | }; |
598 | ||
8fb4b536 | 599 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 600 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 601 | .go_callback = iopen_go_callback, |
e7ccaf5f | 602 | .go_flags = GLOF_LRU, |
b3b94faa DT |
603 | }; |
604 | ||
8fb4b536 | 605 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 606 | .go_type = LM_TYPE_FLOCK, |
e7ccaf5f | 607 | .go_flags = GLOF_LRU, |
b3b94faa DT |
608 | }; |
609 | ||
8fb4b536 | 610 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 611 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
612 | }; |
613 | ||
8fb4b536 | 614 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 615 | .go_type = LM_TYPE_QUOTA, |
e7ccaf5f | 616 | .go_flags = GLOF_LVB | GLOF_LRU, |
b3b94faa DT |
617 | }; |
618 | ||
8fb4b536 | 619 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 620 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
621 | }; |
622 | ||
64d576ba SW |
623 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
624 | [LM_TYPE_META] = &gfs2_meta_glops, | |
625 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
626 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
627 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
628 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
629 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
630 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
631 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
632 | }; | |
633 |