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" |
b3b94faa | 29 | |
ddacfaf7 | 30 | /** |
dba898b0 | 31 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 SW |
32 | * @gl: the glock |
33 | * | |
34 | * None of the buffers should be dirty, locked, or pinned. | |
35 | */ | |
36 | ||
dba898b0 | 37 | static void __gfs2_ail_flush(struct gfs2_glock *gl) |
ddacfaf7 SW |
38 | { |
39 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
ddacfaf7 SW |
40 | struct list_head *head = &gl->gl_ail_list; |
41 | struct gfs2_bufdata *bd; | |
42 | struct buffer_head *bh; | |
d8348de0 | 43 | |
d6a079e8 | 44 | spin_lock(&sdp->sd_ail_lock); |
ddacfaf7 SW |
45 | while (!list_empty(head)) { |
46 | bd = list_entry(head->next, struct gfs2_bufdata, | |
47 | bd_ail_gl_list); | |
48 | bh = bd->bd_bh; | |
f91a0d3e | 49 | gfs2_remove_from_ail(bd); |
d6a079e8 DC |
50 | spin_unlock(&sdp->sd_ail_lock); |
51 | ||
1ad38c43 SW |
52 | bd->bd_bh = NULL; |
53 | bh->b_private = NULL; | |
54 | bd->bd_blkno = bh->b_blocknr; | |
d6a079e8 | 55 | gfs2_log_lock(sdp); |
1ad38c43 SW |
56 | gfs2_assert_withdraw(sdp, !buffer_busy(bh)); |
57 | gfs2_trans_add_revoke(sdp, bd); | |
d6a079e8 DC |
58 | gfs2_log_unlock(sdp); |
59 | ||
60 | spin_lock(&sdp->sd_ail_lock); | |
ddacfaf7 SW |
61 | } |
62 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); | |
d6a079e8 | 63 | spin_unlock(&sdp->sd_ail_lock); |
dba898b0 SW |
64 | } |
65 | ||
66 | ||
67 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) | |
68 | { | |
69 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
70 | struct gfs2_trans tr; | |
71 | ||
72 | memset(&tr, 0, sizeof(tr)); | |
73 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); | |
74 | ||
75 | if (!tr.tr_revokes) | |
76 | return; | |
77 | ||
78 | /* A shortened, inline version of gfs2_trans_begin() */ | |
79 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); | |
80 | tr.tr_ip = (unsigned long)__builtin_return_address(0); | |
81 | INIT_LIST_HEAD(&tr.tr_list_buf); | |
82 | gfs2_log_reserve(sdp, tr.tr_reserved); | |
83 | BUG_ON(current->journal_info); | |
84 | current->journal_info = &tr; | |
85 | ||
86 | __gfs2_ail_flush(gl); | |
87 | ||
88 | gfs2_trans_end(sdp); | |
89 | gfs2_log_flush(sdp, NULL); | |
90 | } | |
ddacfaf7 | 91 | |
dba898b0 SW |
92 | void gfs2_ail_flush(struct gfs2_glock *gl) |
93 | { | |
94 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
95 | unsigned int revokes = atomic_read(&gl->gl_ail_count); | |
96 | int ret; | |
97 | ||
98 | if (!revokes) | |
99 | return; | |
100 | ||
101 | ret = gfs2_trans_begin(sdp, 0, revokes); | |
102 | if (ret) | |
103 | return; | |
104 | __gfs2_ail_flush(gl); | |
ddacfaf7 SW |
105 | gfs2_trans_end(sdp); |
106 | gfs2_log_flush(sdp, NULL); | |
107 | } | |
ba7f7290 SW |
108 | |
109 | /** | |
6bac243f | 110 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 111 | * @gl: the glock |
b3b94faa DT |
112 | * |
113 | * Called when demoting or unlocking an EX glock. We must flush | |
114 | * to disk all dirty buffers/pages relating to this glock, and must not | |
115 | * not return to caller to demote/unlock the glock until I/O is complete. | |
116 | */ | |
117 | ||
6bac243f | 118 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 119 | { |
009d8518 | 120 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
6bac243f SW |
121 | int error; |
122 | ||
123 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
b5d32bea | 124 | return; |
6bac243f | 125 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 126 | |
6bac243f SW |
127 | gfs2_log_flush(gl->gl_sbd, gl); |
128 | filemap_fdatawrite(metamapping); | |
129 | error = filemap_fdatawait(metamapping); | |
130 | mapping_set_error(metamapping, error); | |
131 | gfs2_ail_empty_gl(gl); | |
b3b94faa DT |
132 | } |
133 | ||
134 | /** | |
6bac243f | 135 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
136 | * @gl: the glock |
137 | * @flags: | |
138 | * | |
6bac243f SW |
139 | * We never used LM_ST_DEFERRED with resource groups, so that we |
140 | * should always see the metadata flag set here. | |
141 | * | |
b3b94faa DT |
142 | */ |
143 | ||
6bac243f | 144 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 145 | { |
009d8518 | 146 | struct address_space *mapping = gfs2_glock2aspace(gl); |
b3b94faa | 147 | |
6bac243f SW |
148 | BUG_ON(!(flags & DIO_METADATA)); |
149 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); | |
150 | truncate_inode_pages(mapping, 0); | |
cf45b752 | 151 | |
6bac243f SW |
152 | if (gl->gl_object) { |
153 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; | |
cf45b752 BP |
154 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
155 | } | |
b3b94faa DT |
156 | } |
157 | ||
b5d32bea SW |
158 | /** |
159 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
160 | * @gl: the glock protecting the inode | |
161 | * | |
162 | */ | |
163 | ||
164 | static void inode_go_sync(struct gfs2_glock *gl) | |
165 | { | |
166 | struct gfs2_inode *ip = gl->gl_object; | |
009d8518 | 167 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
168 | int error; |
169 | ||
b5d32bea SW |
170 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
171 | ip = NULL; | |
6bac243f SW |
172 | if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) |
173 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
174 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
175 | return; | |
b5d32bea | 176 | |
6bac243f SW |
177 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
178 | ||
179 | gfs2_log_flush(gl->gl_sbd, gl); | |
180 | filemap_fdatawrite(metamapping); | |
181 | if (ip) { | |
182 | struct address_space *mapping = ip->i_inode.i_mapping; | |
183 | filemap_fdatawrite(mapping); | |
184 | error = filemap_fdatawait(mapping); | |
185 | mapping_set_error(mapping, error); | |
b5d32bea | 186 | } |
6bac243f SW |
187 | error = filemap_fdatawait(metamapping); |
188 | mapping_set_error(metamapping, error); | |
189 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
190 | /* |
191 | * Writeback of the data mapping may cause the dirty flag to be set | |
192 | * so we have to clear it again here. | |
193 | */ | |
194 | smp_mb__before_clear_bit(); | |
195 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
b5d32bea SW |
196 | } |
197 | ||
b3b94faa DT |
198 | /** |
199 | * inode_go_inval - prepare a inode glock to be released | |
200 | * @gl: the glock | |
201 | * @flags: | |
6bac243f SW |
202 | * |
203 | * Normally we invlidate everything, but if we are moving into | |
204 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we | |
205 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
206 | * |
207 | */ | |
208 | ||
209 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
210 | { | |
b004157a | 211 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa | 212 | |
6bac243f SW |
213 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
214 | ||
215 | if (flags & DIO_METADATA) { | |
009d8518 | 216 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 217 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 218 | if (ip) { |
b004157a | 219 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 SW |
220 | forget_all_cached_acls(&ip->i_inode); |
221 | } | |
b004157a SW |
222 | } |
223 | ||
6bac243f SW |
224 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) |
225 | gl->gl_sbd->sd_rindex_uptodate = 0; | |
3cc3f710 | 226 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 227 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
b3b94faa DT |
228 | } |
229 | ||
230 | /** | |
231 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
232 | * @gl: the glock | |
233 | * | |
234 | * Returns: 1 if it's ok | |
235 | */ | |
236 | ||
97cc1025 | 237 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa DT |
238 | { |
239 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
bc015cb8 SW |
240 | struct gfs2_holder *gh; |
241 | ||
97cc1025 SW |
242 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
243 | return 0; | |
bc015cb8 SW |
244 | |
245 | if (!list_empty(&gl->gl_holders)) { | |
246 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); | |
247 | if (gh->gh_list.next != &gl->gl_holders) | |
248 | return 0; | |
249 | } | |
250 | ||
97cc1025 | 251 | return 1; |
b3b94faa DT |
252 | } |
253 | ||
d4b2cf1b SW |
254 | /** |
255 | * gfs2_set_nlink - Set the inode's link count based on on-disk info | |
256 | * @inode: The inode in question | |
257 | * @nlink: The link count | |
258 | * | |
259 | * If the link count has hit zero, it must never be raised, whatever the | |
260 | * on-disk inode might say. When new struct inodes are created the link | |
261 | * count is set to 1, so that we can safely use this test even when reading | |
262 | * in on disk information for the first time. | |
263 | */ | |
264 | ||
265 | static void gfs2_set_nlink(struct inode *inode, u32 nlink) | |
266 | { | |
267 | /* | |
268 | * We will need to review setting the nlink count here in the | |
269 | * light of the forthcoming ro bind mount work. This is a reminder | |
270 | * to do that. | |
271 | */ | |
272 | if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { | |
273 | if (nlink == 0) | |
274 | clear_nlink(inode); | |
275 | else | |
276 | inode->i_nlink = nlink; | |
277 | } | |
278 | } | |
279 | ||
280 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) | |
281 | { | |
282 | const struct gfs2_dinode *str = buf; | |
283 | struct timespec atime; | |
284 | u16 height, depth; | |
285 | ||
286 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
287 | goto corrupt; | |
288 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
289 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
290 | ip->i_inode.i_rdev = 0; | |
291 | switch (ip->i_inode.i_mode & S_IFMT) { | |
292 | case S_IFBLK: | |
293 | case S_IFCHR: | |
294 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
295 | be32_to_cpu(str->di_minor)); | |
296 | break; | |
297 | }; | |
298 | ||
299 | ip->i_inode.i_uid = be32_to_cpu(str->di_uid); | |
300 | ip->i_inode.i_gid = be32_to_cpu(str->di_gid); | |
301 | gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); | |
302 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); | |
303 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
304 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
305 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
306 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
307 | ip->i_inode.i_atime = atime; | |
308 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
309 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
310 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
311 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
312 | ||
313 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
314 | ip->i_generation = be64_to_cpu(str->di_generation); | |
315 | ||
316 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
317 | gfs2_set_inode_flags(&ip->i_inode); | |
318 | height = be16_to_cpu(str->di_height); | |
319 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
320 | goto corrupt; | |
321 | ip->i_height = (u8)height; | |
322 | ||
323 | depth = be16_to_cpu(str->di_depth); | |
324 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
325 | goto corrupt; | |
326 | ip->i_depth = (u8)depth; | |
327 | ip->i_entries = be32_to_cpu(str->di_entries); | |
328 | ||
329 | ip->i_eattr = be64_to_cpu(str->di_eattr); | |
330 | if (S_ISREG(ip->i_inode.i_mode)) | |
331 | gfs2_set_aops(&ip->i_inode); | |
332 | ||
333 | return 0; | |
334 | corrupt: | |
335 | gfs2_consist_inode(ip); | |
336 | return -EIO; | |
337 | } | |
338 | ||
339 | /** | |
340 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
341 | * @ip: The GFS2 inode | |
342 | * | |
343 | * Returns: errno | |
344 | */ | |
345 | ||
346 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
347 | { | |
348 | struct buffer_head *dibh; | |
349 | int error; | |
350 | ||
351 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
352 | if (error) | |
353 | return error; | |
354 | ||
355 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) { | |
356 | brelse(dibh); | |
357 | return -EIO; | |
358 | } | |
359 | ||
360 | error = gfs2_dinode_in(ip, dibh->b_data); | |
361 | brelse(dibh); | |
362 | clear_bit(GIF_INVALID, &ip->i_flags); | |
363 | ||
364 | return error; | |
365 | } | |
366 | ||
b3b94faa DT |
367 | /** |
368 | * inode_go_lock - operation done after an inode lock is locked by a process | |
369 | * @gl: the glock | |
370 | * @flags: | |
371 | * | |
372 | * Returns: errno | |
373 | */ | |
374 | ||
375 | static int inode_go_lock(struct gfs2_holder *gh) | |
376 | { | |
377 | struct gfs2_glock *gl = gh->gh_gl; | |
813e0c46 | 378 | struct gfs2_sbd *sdp = gl->gl_sbd; |
5c676f6d | 379 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
380 | int error = 0; |
381 | ||
091806ed | 382 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
383 | return 0; |
384 | ||
bfded27b | 385 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
386 | error = gfs2_inode_refresh(ip); |
387 | if (error) | |
388 | return error; | |
b3b94faa DT |
389 | } |
390 | ||
383f01fb | 391 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 392 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
393 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
394 | spin_lock(&sdp->sd_trunc_lock); | |
395 | if (list_empty(&ip->i_trunc_list)) | |
396 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); | |
397 | spin_unlock(&sdp->sd_trunc_lock); | |
398 | wake_up(&sdp->sd_quota_wait); | |
399 | return 1; | |
400 | } | |
b3b94faa DT |
401 | |
402 | return error; | |
403 | } | |
404 | ||
6802e340 SW |
405 | /** |
406 | * inode_go_dump - print information about an inode | |
407 | * @seq: The iterator | |
408 | * @ip: the inode | |
409 | * | |
410 | * Returns: 0 on success, -ENOBUFS when we run out of space | |
411 | */ | |
412 | ||
413 | static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) | |
414 | { | |
415 | const struct gfs2_inode *ip = gl->gl_object; | |
416 | if (ip == NULL) | |
417 | return 0; | |
a2e0f799 | 418 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
419 | (unsigned long long)ip->i_no_formal_ino, |
420 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
421 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
422 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 423 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
424 | return 0; |
425 | } | |
426 | ||
b3b94faa DT |
427 | /** |
428 | * rgrp_go_lock - operation done after an rgrp lock is locked by | |
429 | * a first holder on this node. | |
430 | * @gl: the glock | |
431 | * @flags: | |
432 | * | |
433 | * Returns: errno | |
434 | */ | |
435 | ||
436 | static int rgrp_go_lock(struct gfs2_holder *gh) | |
437 | { | |
5c676f6d | 438 | return gfs2_rgrp_bh_get(gh->gh_gl->gl_object); |
b3b94faa DT |
439 | } |
440 | ||
441 | /** | |
442 | * rgrp_go_unlock - operation done before an rgrp lock is unlocked by | |
443 | * a last holder on this node. | |
444 | * @gl: the glock | |
445 | * @flags: | |
446 | * | |
447 | */ | |
448 | ||
449 | static void rgrp_go_unlock(struct gfs2_holder *gh) | |
450 | { | |
5c676f6d | 451 | gfs2_rgrp_bh_put(gh->gh_gl->gl_object); |
b3b94faa DT |
452 | } |
453 | ||
454 | /** | |
3042a2cc | 455 | * trans_go_sync - promote/demote the transaction glock |
b3b94faa DT |
456 | * @gl: the glock |
457 | * @state: the requested state | |
458 | * @flags: | |
459 | * | |
460 | */ | |
461 | ||
3042a2cc | 462 | static void trans_go_sync(struct gfs2_glock *gl) |
b3b94faa DT |
463 | { |
464 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
465 | ||
466 | if (gl->gl_state != LM_ST_UNLOCKED && | |
467 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { | |
468 | gfs2_meta_syncfs(sdp); | |
469 | gfs2_log_shutdown(sdp); | |
470 | } | |
b3b94faa DT |
471 | } |
472 | ||
473 | /** | |
474 | * trans_go_xmote_bh - After promoting/demoting the transaction glock | |
475 | * @gl: the glock | |
476 | * | |
477 | */ | |
478 | ||
6802e340 | 479 | static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa DT |
480 | { |
481 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
feaa7bba | 482 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 483 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 484 | struct gfs2_log_header_host head; |
b3b94faa DT |
485 | int error; |
486 | ||
6802e340 | 487 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 488 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
489 | |
490 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
491 | if (error) | |
492 | gfs2_consist(sdp); | |
493 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
494 | gfs2_consist(sdp); | |
495 | ||
496 | /* Initialize some head of the log stuff */ | |
497 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
498 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
499 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
500 | } | |
501 | } | |
6802e340 | 502 | return 0; |
b3b94faa DT |
503 | } |
504 | ||
97cc1025 SW |
505 | /** |
506 | * trans_go_demote_ok | |
507 | * @gl: the glock | |
508 | * | |
509 | * Always returns 0 | |
510 | */ | |
511 | ||
512 | static int trans_go_demote_ok(const struct gfs2_glock *gl) | |
513 | { | |
514 | return 0; | |
515 | } | |
516 | ||
b94a170e BM |
517 | /** |
518 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
519 | * @gl: the glock | |
520 | * | |
521 | * gl_spin lock is held while calling this | |
522 | */ | |
523 | static void iopen_go_callback(struct gfs2_glock *gl) | |
524 | { | |
525 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; | |
001e8e8d SW |
526 | struct gfs2_sbd *sdp = gl->gl_sbd; |
527 | ||
528 | if (sdp->sd_vfs->s_flags & MS_RDONLY) | |
529 | return; | |
b94a170e BM |
530 | |
531 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 532 | gl->gl_state == LM_ST_SHARED && ip) { |
b94a170e BM |
533 | gfs2_glock_hold(gl); |
534 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) | |
535 | gfs2_glock_put_nolock(gl); | |
536 | } | |
537 | } | |
538 | ||
8fb4b536 | 539 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 540 | .go_type = LM_TYPE_META, |
b3b94faa DT |
541 | }; |
542 | ||
8fb4b536 | 543 | const struct gfs2_glock_operations gfs2_inode_glops = { |
3042a2cc | 544 | .go_xmote_th = inode_go_sync, |
b3b94faa DT |
545 | .go_inval = inode_go_inval, |
546 | .go_demote_ok = inode_go_demote_ok, | |
547 | .go_lock = inode_go_lock, | |
6802e340 | 548 | .go_dump = inode_go_dump, |
ea67eedb | 549 | .go_type = LM_TYPE_INODE, |
6802e340 | 550 | .go_min_hold_time = HZ / 5, |
009d8518 | 551 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
552 | }; |
553 | ||
8fb4b536 | 554 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
6bac243f SW |
555 | .go_xmote_th = rgrp_go_sync, |
556 | .go_inval = rgrp_go_inval, | |
b3b94faa DT |
557 | .go_lock = rgrp_go_lock, |
558 | .go_unlock = rgrp_go_unlock, | |
09010978 | 559 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 560 | .go_type = LM_TYPE_RGRP, |
6802e340 | 561 | .go_min_hold_time = HZ / 5, |
009d8518 | 562 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
563 | }; |
564 | ||
8fb4b536 | 565 | const struct gfs2_glock_operations gfs2_trans_glops = { |
3042a2cc | 566 | .go_xmote_th = trans_go_sync, |
b3b94faa | 567 | .go_xmote_bh = trans_go_xmote_bh, |
97cc1025 | 568 | .go_demote_ok = trans_go_demote_ok, |
ea67eedb | 569 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
570 | }; |
571 | ||
8fb4b536 | 572 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 573 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 574 | .go_callback = iopen_go_callback, |
b3b94faa DT |
575 | }; |
576 | ||
8fb4b536 | 577 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 578 | .go_type = LM_TYPE_FLOCK, |
b3b94faa DT |
579 | }; |
580 | ||
8fb4b536 | 581 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 582 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
583 | }; |
584 | ||
8fb4b536 | 585 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 586 | .go_type = LM_TYPE_QUOTA, |
b3b94faa DT |
587 | }; |
588 | ||
8fb4b536 | 589 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 590 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
591 | }; |
592 | ||
64d576ba SW |
593 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
594 | [LM_TYPE_META] = &gfs2_meta_glops, | |
595 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
596 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
597 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
598 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
599 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
600 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
601 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
602 | }; | |
603 |