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> |
b3b94faa DT |
16 | |
17 | #include "gfs2.h" | |
5c676f6d | 18 | #include "incore.h" |
b3b94faa DT |
19 | #include "bmap.h" |
20 | #include "glock.h" | |
21 | #include "glops.h" | |
22 | #include "inode.h" | |
23 | #include "log.h" | |
24 | #include "meta_io.h" | |
b3b94faa DT |
25 | #include "recovery.h" |
26 | #include "rgrp.h" | |
5c676f6d | 27 | #include "util.h" |
ddacfaf7 | 28 | #include "trans.h" |
17d539f0 | 29 | #include "dir.h" |
b3b94faa | 30 | |
2e60d768 BM |
31 | struct workqueue_struct *gfs2_freeze_wq; |
32 | ||
75549186 SW |
33 | static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh) |
34 | { | |
35 | fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n", | |
36 | bh, (unsigned long long)bh->b_blocknr, bh->b_state, | |
37 | bh->b_page->mapping, bh->b_page->flags); | |
38 | fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n", | |
39 | gl->gl_name.ln_type, gl->gl_name.ln_number, | |
40 | gfs2_glock2aspace(gl)); | |
41 | gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n"); | |
42 | } | |
43 | ||
ddacfaf7 | 44 | /** |
dba898b0 | 45 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 | 46 | * @gl: the glock |
b5b24d7a | 47 | * @fsync: set when called from fsync (not all buffers will be clean) |
ddacfaf7 SW |
48 | * |
49 | * None of the buffers should be dirty, locked, or pinned. | |
50 | */ | |
51 | ||
1bc333f4 BM |
52 | static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync, |
53 | unsigned int nr_revokes) | |
ddacfaf7 SW |
54 | { |
55 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
ddacfaf7 | 56 | struct list_head *head = &gl->gl_ail_list; |
b5b24d7a | 57 | struct gfs2_bufdata *bd, *tmp; |
ddacfaf7 | 58 | struct buffer_head *bh; |
b5b24d7a | 59 | const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); |
d8348de0 | 60 | |
b5b24d7a | 61 | gfs2_log_lock(sdp); |
d6a079e8 | 62 | spin_lock(&sdp->sd_ail_lock); |
1bc333f4 BM |
63 | list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) { |
64 | if (nr_revokes == 0) | |
65 | break; | |
ddacfaf7 | 66 | bh = bd->bd_bh; |
b5b24d7a SW |
67 | if (bh->b_state & b_state) { |
68 | if (fsync) | |
69 | continue; | |
75549186 | 70 | gfs2_ail_error(gl, bh); |
b5b24d7a | 71 | } |
1ad38c43 | 72 | gfs2_trans_add_revoke(sdp, bd); |
1bc333f4 | 73 | nr_revokes--; |
ddacfaf7 | 74 | } |
8eae1ca0 | 75 | GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); |
d6a079e8 | 76 | spin_unlock(&sdp->sd_ail_lock); |
b5b24d7a | 77 | gfs2_log_unlock(sdp); |
dba898b0 SW |
78 | } |
79 | ||
80 | ||
81 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) | |
82 | { | |
83 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
84 | struct gfs2_trans tr; | |
85 | ||
86 | memset(&tr, 0, sizeof(tr)); | |
d69a3c65 SW |
87 | INIT_LIST_HEAD(&tr.tr_buf); |
88 | INIT_LIST_HEAD(&tr.tr_databuf); | |
dba898b0 SW |
89 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); |
90 | ||
91 | if (!tr.tr_revokes) | |
92 | return; | |
93 | ||
24972557 BM |
94 | /* A shortened, inline version of gfs2_trans_begin() |
95 | * tr->alloced is not set since the transaction structure is | |
96 | * on the stack */ | |
dba898b0 | 97 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); |
d29c0afe | 98 | tr.tr_ip = _RET_IP_; |
2e60d768 | 99 | if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) |
24972557 | 100 | return; |
8eae1ca0 | 101 | WARN_ON_ONCE(current->journal_info); |
dba898b0 SW |
102 | current->journal_info = &tr; |
103 | ||
1bc333f4 | 104 | __gfs2_ail_flush(gl, 0, tr.tr_revokes); |
dba898b0 SW |
105 | |
106 | gfs2_trans_end(sdp); | |
24972557 | 107 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
dba898b0 | 108 | } |
ddacfaf7 | 109 | |
b5b24d7a | 110 | void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) |
dba898b0 SW |
111 | { |
112 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
113 | unsigned int revokes = atomic_read(&gl->gl_ail_count); | |
1bc333f4 | 114 | unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); |
dba898b0 SW |
115 | int ret; |
116 | ||
117 | if (!revokes) | |
118 | return; | |
119 | ||
1bc333f4 BM |
120 | while (revokes > max_revokes) |
121 | max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
122 | ||
123 | ret = gfs2_trans_begin(sdp, 0, max_revokes); | |
dba898b0 SW |
124 | if (ret) |
125 | return; | |
1bc333f4 | 126 | __gfs2_ail_flush(gl, fsync, max_revokes); |
ddacfaf7 | 127 | gfs2_trans_end(sdp); |
24972557 | 128 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
ddacfaf7 | 129 | } |
ba7f7290 SW |
130 | |
131 | /** | |
6bac243f | 132 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 133 | * @gl: the glock |
b3b94faa DT |
134 | * |
135 | * Called when demoting or unlocking an EX glock. We must flush | |
136 | * to disk all dirty buffers/pages relating to this glock, and must not | |
137 | * not return to caller to demote/unlock the glock until I/O is complete. | |
138 | */ | |
139 | ||
6bac243f | 140 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 141 | { |
70d4ee94 SW |
142 | struct gfs2_sbd *sdp = gl->gl_sbd; |
143 | struct address_space *mapping = &sdp->sd_aspace; | |
8339ee54 | 144 | struct gfs2_rgrpd *rgd; |
6bac243f SW |
145 | int error; |
146 | ||
39b0f1e9 BP |
147 | spin_lock(&gl->gl_spin); |
148 | rgd = gl->gl_object; | |
149 | if (rgd) | |
150 | gfs2_rgrp_brelse(rgd); | |
151 | spin_unlock(&gl->gl_spin); | |
152 | ||
6bac243f | 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 | |
24972557 | 157 | gfs2_log_flush(sdp, gl, NORMAL_FLUSH); |
70d4ee94 SW |
158 | filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
159 | error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
160 | mapping_set_error(mapping, error); | |
6bac243f | 161 | gfs2_ail_empty_gl(gl); |
7c9ca621 | 162 | |
8339ee54 SW |
163 | spin_lock(&gl->gl_spin); |
164 | rgd = gl->gl_object; | |
165 | if (rgd) | |
166 | gfs2_free_clones(rgd); | |
167 | spin_unlock(&gl->gl_spin); | |
b3b94faa DT |
168 | } |
169 | ||
170 | /** | |
6bac243f | 171 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
172 | * @gl: the glock |
173 | * @flags: | |
174 | * | |
6bac243f SW |
175 | * We never used LM_ST_DEFERRED with resource groups, so that we |
176 | * should always see the metadata flag set here. | |
177 | * | |
b3b94faa DT |
178 | */ |
179 | ||
6bac243f | 180 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 181 | { |
70d4ee94 SW |
182 | struct gfs2_sbd *sdp = gl->gl_sbd; |
183 | struct address_space *mapping = &sdp->sd_aspace; | |
39b0f1e9 BP |
184 | struct gfs2_rgrpd *rgd = gl->gl_object; |
185 | ||
186 | if (rgd) | |
187 | gfs2_rgrp_brelse(rgd); | |
b3b94faa | 188 | |
8eae1ca0 | 189 | WARN_ON_ONCE(!(flags & DIO_METADATA)); |
70d4ee94 | 190 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
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 | ||
b5d32bea SW |
197 | /** |
198 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
199 | * @gl: the glock protecting the inode | |
200 | * | |
201 | */ | |
202 | ||
203 | static void inode_go_sync(struct gfs2_glock *gl) | |
204 | { | |
205 | struct gfs2_inode *ip = gl->gl_object; | |
009d8518 | 206 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
207 | int error; |
208 | ||
b5d32bea SW |
209 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
210 | ip = NULL; | |
582d2f7a SW |
211 | if (ip) { |
212 | if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) | |
213 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
214 | inode_dio_wait(&ip->i_inode); | |
215 | } | |
6bac243f SW |
216 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
217 | return; | |
b5d32bea | 218 | |
8eae1ca0 | 219 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
6bac243f | 220 | |
24972557 | 221 | gfs2_log_flush(gl->gl_sbd, gl, NORMAL_FLUSH); |
6bac243f SW |
222 | filemap_fdatawrite(metamapping); |
223 | if (ip) { | |
224 | struct address_space *mapping = ip->i_inode.i_mapping; | |
225 | filemap_fdatawrite(mapping); | |
226 | error = filemap_fdatawait(mapping); | |
227 | mapping_set_error(mapping, error); | |
b5d32bea | 228 | } |
6bac243f SW |
229 | error = filemap_fdatawait(metamapping); |
230 | mapping_set_error(metamapping, error); | |
231 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
232 | /* |
233 | * Writeback of the data mapping may cause the dirty flag to be set | |
234 | * so we have to clear it again here. | |
235 | */ | |
4e857c58 | 236 | smp_mb__before_atomic(); |
52fcd11c | 237 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
b5d32bea SW |
238 | } |
239 | ||
b3b94faa DT |
240 | /** |
241 | * inode_go_inval - prepare a inode glock to be released | |
242 | * @gl: the glock | |
243 | * @flags: | |
6b49d1d9 GU |
244 | * |
245 | * Normally we invalidate everything, but if we are moving into | |
6bac243f SW |
246 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we |
247 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
248 | * |
249 | */ | |
250 | ||
251 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
252 | { | |
b004157a | 253 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa | 254 | |
6bac243f SW |
255 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
256 | ||
257 | if (flags & DIO_METADATA) { | |
009d8518 | 258 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 259 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 260 | if (ip) { |
b004157a | 261 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 262 | forget_all_cached_acls(&ip->i_inode); |
17d539f0 | 263 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 264 | } |
b004157a SW |
265 | } |
266 | ||
1ce53368 | 267 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { |
24972557 | 268 | gfs2_log_flush(gl->gl_sbd, NULL, NORMAL_FLUSH); |
6bac243f | 269 | gl->gl_sbd->sd_rindex_uptodate = 0; |
1ce53368 | 270 | } |
3cc3f710 | 271 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 272 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
b3b94faa DT |
273 | } |
274 | ||
275 | /** | |
276 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
277 | * @gl: the glock | |
278 | * | |
279 | * Returns: 1 if it's ok | |
280 | */ | |
281 | ||
97cc1025 | 282 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa DT |
283 | { |
284 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
bc015cb8 SW |
285 | struct gfs2_holder *gh; |
286 | ||
97cc1025 SW |
287 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
288 | return 0; | |
bc015cb8 SW |
289 | |
290 | if (!list_empty(&gl->gl_holders)) { | |
291 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); | |
292 | if (gh->gh_list.next != &gl->gl_holders) | |
293 | return 0; | |
294 | } | |
295 | ||
97cc1025 | 296 | return 1; |
b3b94faa DT |
297 | } |
298 | ||
d4b2cf1b SW |
299 | /** |
300 | * gfs2_set_nlink - Set the inode's link count based on on-disk info | |
301 | * @inode: The inode in question | |
302 | * @nlink: The link count | |
303 | * | |
304 | * If the link count has hit zero, it must never be raised, whatever the | |
305 | * on-disk inode might say. When new struct inodes are created the link | |
306 | * count is set to 1, so that we can safely use this test even when reading | |
307 | * in on disk information for the first time. | |
308 | */ | |
309 | ||
310 | static void gfs2_set_nlink(struct inode *inode, u32 nlink) | |
311 | { | |
312 | /* | |
313 | * We will need to review setting the nlink count here in the | |
314 | * light of the forthcoming ro bind mount work. This is a reminder | |
315 | * to do that. | |
316 | */ | |
317 | if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { | |
318 | if (nlink == 0) | |
319 | clear_nlink(inode); | |
320 | else | |
bfe86848 | 321 | set_nlink(inode, nlink); |
d4b2cf1b SW |
322 | } |
323 | } | |
324 | ||
325 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) | |
326 | { | |
327 | const struct gfs2_dinode *str = buf; | |
328 | struct timespec atime; | |
329 | u16 height, depth; | |
330 | ||
331 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
332 | goto corrupt; | |
333 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
334 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
335 | ip->i_inode.i_rdev = 0; | |
336 | switch (ip->i_inode.i_mode & S_IFMT) { | |
337 | case S_IFBLK: | |
338 | case S_IFCHR: | |
339 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
340 | be32_to_cpu(str->di_minor)); | |
341 | break; | |
342 | }; | |
343 | ||
d0546426 EB |
344 | i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); |
345 | i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); | |
d4b2cf1b SW |
346 | gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); |
347 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); | |
348 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
349 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
350 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
351 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
352 | ip->i_inode.i_atime = atime; | |
353 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
354 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
355 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
356 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
357 | ||
358 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
359 | ip->i_generation = be64_to_cpu(str->di_generation); | |
360 | ||
361 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
362 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
363 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
364 | gfs2_set_inode_flags(&ip->i_inode); |
365 | height = be16_to_cpu(str->di_height); | |
366 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
367 | goto corrupt; | |
368 | ip->i_height = (u8)height; | |
369 | ||
370 | depth = be16_to_cpu(str->di_depth); | |
371 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
372 | goto corrupt; | |
373 | ip->i_depth = (u8)depth; | |
374 | ip->i_entries = be32_to_cpu(str->di_entries); | |
375 | ||
d4b2cf1b SW |
376 | if (S_ISREG(ip->i_inode.i_mode)) |
377 | gfs2_set_aops(&ip->i_inode); | |
378 | ||
379 | return 0; | |
380 | corrupt: | |
381 | gfs2_consist_inode(ip); | |
382 | return -EIO; | |
383 | } | |
384 | ||
385 | /** | |
386 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
387 | * @ip: The GFS2 inode | |
388 | * | |
389 | * Returns: errno | |
390 | */ | |
391 | ||
392 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
393 | { | |
394 | struct buffer_head *dibh; | |
395 | int error; | |
396 | ||
397 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
398 | if (error) | |
399 | return error; | |
400 | ||
d4b2cf1b SW |
401 | error = gfs2_dinode_in(ip, dibh->b_data); |
402 | brelse(dibh); | |
403 | clear_bit(GIF_INVALID, &ip->i_flags); | |
404 | ||
405 | return error; | |
406 | } | |
407 | ||
b3b94faa DT |
408 | /** |
409 | * inode_go_lock - operation done after an inode lock is locked by a process | |
410 | * @gl: the glock | |
411 | * @flags: | |
412 | * | |
413 | * Returns: errno | |
414 | */ | |
415 | ||
416 | static int inode_go_lock(struct gfs2_holder *gh) | |
417 | { | |
418 | struct gfs2_glock *gl = gh->gh_gl; | |
813e0c46 | 419 | struct gfs2_sbd *sdp = gl->gl_sbd; |
5c676f6d | 420 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
421 | int error = 0; |
422 | ||
091806ed | 423 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
424 | return 0; |
425 | ||
bfded27b | 426 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
427 | error = gfs2_inode_refresh(ip); |
428 | if (error) | |
429 | return error; | |
b3b94faa DT |
430 | } |
431 | ||
582d2f7a SW |
432 | if (gh->gh_state != LM_ST_DEFERRED) |
433 | inode_dio_wait(&ip->i_inode); | |
434 | ||
383f01fb | 435 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 436 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
437 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
438 | spin_lock(&sdp->sd_trunc_lock); | |
439 | if (list_empty(&ip->i_trunc_list)) | |
440 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); | |
441 | spin_unlock(&sdp->sd_trunc_lock); | |
442 | wake_up(&sdp->sd_quota_wait); | |
443 | return 1; | |
444 | } | |
b3b94faa DT |
445 | |
446 | return error; | |
447 | } | |
448 | ||
6802e340 SW |
449 | /** |
450 | * inode_go_dump - print information about an inode | |
451 | * @seq: The iterator | |
452 | * @ip: the inode | |
453 | * | |
6802e340 SW |
454 | */ |
455 | ||
ac3beb6a | 456 | static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) |
6802e340 SW |
457 | { |
458 | const struct gfs2_inode *ip = gl->gl_object; | |
459 | if (ip == NULL) | |
ac3beb6a | 460 | return; |
a2e0f799 | 461 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
462 | (unsigned long long)ip->i_no_formal_ino, |
463 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
464 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
465 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 466 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
467 | } |
468 | ||
b3b94faa | 469 | /** |
24972557 | 470 | * freeze_go_sync - promote/demote the freeze glock |
b3b94faa DT |
471 | * @gl: the glock |
472 | * @state: the requested state | |
473 | * @flags: | |
474 | * | |
475 | */ | |
476 | ||
24972557 | 477 | static void freeze_go_sync(struct gfs2_glock *gl) |
b3b94faa | 478 | { |
2e60d768 | 479 | int error = 0; |
b3b94faa DT |
480 | struct gfs2_sbd *sdp = gl->gl_sbd; |
481 | ||
24972557 | 482 | if (gl->gl_state == LM_ST_SHARED && |
b3b94faa | 483 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
2e60d768 BM |
484 | atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE); |
485 | error = freeze_super(sdp->sd_vfs); | |
486 | if (error) { | |
487 | printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error); | |
488 | gfs2_assert_withdraw(sdp, 0); | |
489 | } | |
490 | queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work); | |
491 | gfs2_log_flush(sdp, NULL, FREEZE_FLUSH); | |
b3b94faa | 492 | } |
b3b94faa DT |
493 | } |
494 | ||
495 | /** | |
24972557 | 496 | * freeze_go_xmote_bh - After promoting/demoting the freeze glock |
b3b94faa DT |
497 | * @gl: the glock |
498 | * | |
499 | */ | |
500 | ||
24972557 | 501 | static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa DT |
502 | { |
503 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
feaa7bba | 504 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 505 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 506 | struct gfs2_log_header_host head; |
b3b94faa DT |
507 | int error; |
508 | ||
6802e340 | 509 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 510 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
511 | |
512 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
513 | if (error) | |
514 | gfs2_consist(sdp); | |
515 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
516 | gfs2_consist(sdp); | |
517 | ||
518 | /* Initialize some head of the log stuff */ | |
519 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
520 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
521 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
522 | } | |
523 | } | |
6802e340 | 524 | return 0; |
b3b94faa DT |
525 | } |
526 | ||
97cc1025 SW |
527 | /** |
528 | * trans_go_demote_ok | |
529 | * @gl: the glock | |
530 | * | |
531 | * Always returns 0 | |
532 | */ | |
533 | ||
24972557 | 534 | static int freeze_go_demote_ok(const struct gfs2_glock *gl) |
97cc1025 SW |
535 | { |
536 | return 0; | |
537 | } | |
538 | ||
b94a170e BM |
539 | /** |
540 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
541 | * @gl: the glock | |
542 | * | |
543 | * gl_spin lock is held while calling this | |
544 | */ | |
81ffbf65 | 545 | static void iopen_go_callback(struct gfs2_glock *gl, bool remote) |
b94a170e BM |
546 | { |
547 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; | |
001e8e8d SW |
548 | struct gfs2_sbd *sdp = gl->gl_sbd; |
549 | ||
81ffbf65 | 550 | if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY)) |
001e8e8d | 551 | return; |
b94a170e BM |
552 | |
553 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 554 | gl->gl_state == LM_ST_SHARED && ip) { |
e66cf161 | 555 | gl->gl_lockref.count++; |
b94a170e | 556 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
e66cf161 | 557 | gl->gl_lockref.count--; |
b94a170e BM |
558 | } |
559 | } | |
560 | ||
8fb4b536 | 561 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 562 | .go_type = LM_TYPE_META, |
b3b94faa DT |
563 | }; |
564 | ||
8fb4b536 | 565 | const struct gfs2_glock_operations gfs2_inode_glops = { |
06dfc306 | 566 | .go_sync = inode_go_sync, |
b3b94faa DT |
567 | .go_inval = inode_go_inval, |
568 | .go_demote_ok = inode_go_demote_ok, | |
569 | .go_lock = inode_go_lock, | |
6802e340 | 570 | .go_dump = inode_go_dump, |
ea67eedb | 571 | .go_type = LM_TYPE_INODE, |
e7ccaf5f | 572 | .go_flags = GLOF_ASPACE | GLOF_LRU, |
b3b94faa DT |
573 | }; |
574 | ||
8fb4b536 | 575 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
06dfc306 | 576 | .go_sync = rgrp_go_sync, |
6bac243f | 577 | .go_inval = rgrp_go_inval, |
7c9ca621 BP |
578 | .go_lock = gfs2_rgrp_go_lock, |
579 | .go_unlock = gfs2_rgrp_go_unlock, | |
09010978 | 580 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 581 | .go_type = LM_TYPE_RGRP, |
70d4ee94 | 582 | .go_flags = GLOF_LVB, |
b3b94faa DT |
583 | }; |
584 | ||
24972557 BM |
585 | const struct gfs2_glock_operations gfs2_freeze_glops = { |
586 | .go_sync = freeze_go_sync, | |
587 | .go_xmote_bh = freeze_go_xmote_bh, | |
588 | .go_demote_ok = freeze_go_demote_ok, | |
ea67eedb | 589 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
590 | }; |
591 | ||
8fb4b536 | 592 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 593 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 594 | .go_callback = iopen_go_callback, |
e7ccaf5f | 595 | .go_flags = GLOF_LRU, |
b3b94faa DT |
596 | }; |
597 | ||
8fb4b536 | 598 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 599 | .go_type = LM_TYPE_FLOCK, |
e7ccaf5f | 600 | .go_flags = GLOF_LRU, |
b3b94faa DT |
601 | }; |
602 | ||
8fb4b536 | 603 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 604 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
605 | }; |
606 | ||
8fb4b536 | 607 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 608 | .go_type = LM_TYPE_QUOTA, |
e7ccaf5f | 609 | .go_flags = GLOF_LVB | GLOF_LRU, |
b3b94faa DT |
610 | }; |
611 | ||
8fb4b536 | 612 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 613 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
614 | }; |
615 | ||
64d576ba SW |
616 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
617 | [LM_TYPE_META] = &gfs2_meta_glops, | |
618 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
619 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
620 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
621 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
622 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
623 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
624 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
625 | }; | |
626 |