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Commit | Line | Data |
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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 | |
75549186 SW |
31 | static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh) |
32 | { | |
33 | fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n", | |
34 | bh, (unsigned long long)bh->b_blocknr, bh->b_state, | |
35 | bh->b_page->mapping, bh->b_page->flags); | |
36 | fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n", | |
37 | gl->gl_name.ln_type, gl->gl_name.ln_number, | |
38 | gfs2_glock2aspace(gl)); | |
39 | gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n"); | |
40 | } | |
41 | ||
ddacfaf7 | 42 | /** |
dba898b0 | 43 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 SW |
44 | * @gl: the glock |
45 | * | |
46 | * None of the buffers should be dirty, locked, or pinned. | |
47 | */ | |
48 | ||
f1818529 | 49 | static void __gfs2_ail_flush(struct gfs2_glock *gl, unsigned long b_state) |
ddacfaf7 SW |
50 | { |
51 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
ddacfaf7 SW |
52 | struct list_head *head = &gl->gl_ail_list; |
53 | struct gfs2_bufdata *bd; | |
54 | struct buffer_head *bh; | |
75549186 | 55 | sector_t blocknr; |
d8348de0 | 56 | |
d6a079e8 | 57 | spin_lock(&sdp->sd_ail_lock); |
ddacfaf7 SW |
58 | while (!list_empty(head)) { |
59 | bd = list_entry(head->next, struct gfs2_bufdata, | |
60 | bd_ail_gl_list); | |
61 | bh = bd->bd_bh; | |
75549186 | 62 | blocknr = bh->b_blocknr; |
f1818529 | 63 | if (bh->b_state & b_state) |
75549186 | 64 | gfs2_ail_error(gl, bh); |
1ad38c43 | 65 | bh->b_private = NULL; |
75549186 | 66 | gfs2_remove_from_ail(bd); /* drops ref on bh */ |
380f7c65 SW |
67 | spin_unlock(&sdp->sd_ail_lock); |
68 | ||
75549186 SW |
69 | bd->bd_bh = NULL; |
70 | bd->bd_blkno = blocknr; | |
71 | ||
d6a079e8 | 72 | gfs2_log_lock(sdp); |
1ad38c43 | 73 | gfs2_trans_add_revoke(sdp, bd); |
d6a079e8 DC |
74 | gfs2_log_unlock(sdp); |
75 | ||
76 | spin_lock(&sdp->sd_ail_lock); | |
ddacfaf7 SW |
77 | } |
78 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); | |
d6a079e8 | 79 | spin_unlock(&sdp->sd_ail_lock); |
dba898b0 SW |
80 | } |
81 | ||
82 | ||
83 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) | |
84 | { | |
85 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
86 | struct gfs2_trans tr; | |
87 | ||
88 | memset(&tr, 0, sizeof(tr)); | |
89 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); | |
90 | ||
91 | if (!tr.tr_revokes) | |
92 | return; | |
93 | ||
94 | /* A shortened, inline version of gfs2_trans_begin() */ | |
95 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); | |
96 | tr.tr_ip = (unsigned long)__builtin_return_address(0); | |
97 | INIT_LIST_HEAD(&tr.tr_list_buf); | |
98 | gfs2_log_reserve(sdp, tr.tr_reserved); | |
99 | BUG_ON(current->journal_info); | |
100 | current->journal_info = &tr; | |
101 | ||
f1818529 | 102 | __gfs2_ail_flush(gl, (1ul << BH_Dirty)|(1ul << BH_Pinned)|(1ul << BH_Lock)); |
dba898b0 SW |
103 | |
104 | gfs2_trans_end(sdp); | |
105 | gfs2_log_flush(sdp, NULL); | |
106 | } | |
ddacfaf7 | 107 | |
dba898b0 SW |
108 | void gfs2_ail_flush(struct gfs2_glock *gl) |
109 | { | |
110 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
111 | unsigned int revokes = atomic_read(&gl->gl_ail_count); | |
112 | int ret; | |
113 | ||
114 | if (!revokes) | |
115 | return; | |
116 | ||
117 | ret = gfs2_trans_begin(sdp, 0, revokes); | |
118 | if (ret) | |
119 | return; | |
f1818529 | 120 | __gfs2_ail_flush(gl, (1ul << BH_Dirty)|(1ul << BH_Pinned)); |
ddacfaf7 SW |
121 | gfs2_trans_end(sdp); |
122 | gfs2_log_flush(sdp, NULL); | |
123 | } | |
ba7f7290 SW |
124 | |
125 | /** | |
6bac243f | 126 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 127 | * @gl: the glock |
b3b94faa DT |
128 | * |
129 | * Called when demoting or unlocking an EX glock. We must flush | |
130 | * to disk all dirty buffers/pages relating to this glock, and must not | |
131 | * not return to caller to demote/unlock the glock until I/O is complete. | |
132 | */ | |
133 | ||
6bac243f | 134 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 135 | { |
009d8518 | 136 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
7c9ca621 BP |
137 | struct gfs2_rgrpd *rgd = gl->gl_object; |
138 | unsigned int x; | |
6bac243f SW |
139 | int error; |
140 | ||
141 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
b5d32bea | 142 | return; |
6bac243f | 143 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 144 | |
6bac243f SW |
145 | gfs2_log_flush(gl->gl_sbd, gl); |
146 | filemap_fdatawrite(metamapping); | |
147 | error = filemap_fdatawait(metamapping); | |
148 | mapping_set_error(metamapping, error); | |
149 | gfs2_ail_empty_gl(gl); | |
7c9ca621 BP |
150 | |
151 | if (!rgd) | |
152 | return; | |
153 | ||
154 | for (x = 0; x < rgd->rd_length; x++) { | |
155 | struct gfs2_bitmap *bi = rgd->rd_bits + x; | |
156 | kfree(bi->bi_clone); | |
157 | bi->bi_clone = NULL; | |
158 | } | |
b3b94faa DT |
159 | } |
160 | ||
161 | /** | |
6bac243f | 162 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
163 | * @gl: the glock |
164 | * @flags: | |
165 | * | |
6bac243f SW |
166 | * We never used LM_ST_DEFERRED with resource groups, so that we |
167 | * should always see the metadata flag set here. | |
168 | * | |
b3b94faa DT |
169 | */ |
170 | ||
6bac243f | 171 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 172 | { |
009d8518 | 173 | struct address_space *mapping = gfs2_glock2aspace(gl); |
b3b94faa | 174 | |
6bac243f SW |
175 | BUG_ON(!(flags & DIO_METADATA)); |
176 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); | |
177 | truncate_inode_pages(mapping, 0); | |
cf45b752 | 178 | |
6bac243f SW |
179 | if (gl->gl_object) { |
180 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; | |
cf45b752 BP |
181 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
182 | } | |
b3b94faa DT |
183 | } |
184 | ||
b5d32bea SW |
185 | /** |
186 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
187 | * @gl: the glock protecting the inode | |
188 | * | |
189 | */ | |
190 | ||
191 | static void inode_go_sync(struct gfs2_glock *gl) | |
192 | { | |
193 | struct gfs2_inode *ip = gl->gl_object; | |
009d8518 | 194 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
195 | int error; |
196 | ||
b5d32bea SW |
197 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
198 | ip = NULL; | |
6bac243f SW |
199 | if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) |
200 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
201 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
202 | return; | |
b5d32bea | 203 | |
6bac243f SW |
204 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
205 | ||
206 | gfs2_log_flush(gl->gl_sbd, gl); | |
207 | filemap_fdatawrite(metamapping); | |
208 | if (ip) { | |
209 | struct address_space *mapping = ip->i_inode.i_mapping; | |
210 | filemap_fdatawrite(mapping); | |
211 | error = filemap_fdatawait(mapping); | |
212 | mapping_set_error(mapping, error); | |
b5d32bea | 213 | } |
6bac243f SW |
214 | error = filemap_fdatawait(metamapping); |
215 | mapping_set_error(metamapping, error); | |
216 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
217 | /* |
218 | * Writeback of the data mapping may cause the dirty flag to be set | |
219 | * so we have to clear it again here. | |
220 | */ | |
221 | smp_mb__before_clear_bit(); | |
222 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
b5d32bea SW |
223 | } |
224 | ||
b3b94faa DT |
225 | /** |
226 | * inode_go_inval - prepare a inode glock to be released | |
227 | * @gl: the glock | |
228 | * @flags: | |
6bac243f SW |
229 | * |
230 | * Normally we invlidate everything, but if we are moving into | |
231 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we | |
232 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
233 | * |
234 | */ | |
235 | ||
236 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
237 | { | |
b004157a | 238 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa | 239 | |
6bac243f SW |
240 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
241 | ||
242 | if (flags & DIO_METADATA) { | |
009d8518 | 243 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 244 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 245 | if (ip) { |
b004157a | 246 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 247 | forget_all_cached_acls(&ip->i_inode); |
17d539f0 | 248 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 249 | } |
b004157a SW |
250 | } |
251 | ||
1ce53368 BM |
252 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { |
253 | gfs2_log_flush(gl->gl_sbd, NULL); | |
6bac243f | 254 | gl->gl_sbd->sd_rindex_uptodate = 0; |
1ce53368 | 255 | } |
3cc3f710 | 256 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 257 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
b3b94faa DT |
258 | } |
259 | ||
260 | /** | |
261 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
262 | * @gl: the glock | |
263 | * | |
264 | * Returns: 1 if it's ok | |
265 | */ | |
266 | ||
97cc1025 | 267 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa DT |
268 | { |
269 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
bc015cb8 SW |
270 | struct gfs2_holder *gh; |
271 | ||
97cc1025 SW |
272 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
273 | return 0; | |
bc015cb8 SW |
274 | |
275 | if (!list_empty(&gl->gl_holders)) { | |
276 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); | |
277 | if (gh->gh_list.next != &gl->gl_holders) | |
278 | return 0; | |
279 | } | |
280 | ||
97cc1025 | 281 | return 1; |
b3b94faa DT |
282 | } |
283 | ||
d4b2cf1b SW |
284 | /** |
285 | * gfs2_set_nlink - Set the inode's link count based on on-disk info | |
286 | * @inode: The inode in question | |
287 | * @nlink: The link count | |
288 | * | |
289 | * If the link count has hit zero, it must never be raised, whatever the | |
290 | * on-disk inode might say. When new struct inodes are created the link | |
291 | * count is set to 1, so that we can safely use this test even when reading | |
292 | * in on disk information for the first time. | |
293 | */ | |
294 | ||
295 | static void gfs2_set_nlink(struct inode *inode, u32 nlink) | |
296 | { | |
297 | /* | |
298 | * We will need to review setting the nlink count here in the | |
299 | * light of the forthcoming ro bind mount work. This is a reminder | |
300 | * to do that. | |
301 | */ | |
302 | if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { | |
303 | if (nlink == 0) | |
304 | clear_nlink(inode); | |
305 | else | |
306 | inode->i_nlink = nlink; | |
307 | } | |
308 | } | |
309 | ||
310 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) | |
311 | { | |
312 | const struct gfs2_dinode *str = buf; | |
313 | struct timespec atime; | |
314 | u16 height, depth; | |
315 | ||
316 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
317 | goto corrupt; | |
318 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
319 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
320 | ip->i_inode.i_rdev = 0; | |
321 | switch (ip->i_inode.i_mode & S_IFMT) { | |
322 | case S_IFBLK: | |
323 | case S_IFCHR: | |
324 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
325 | be32_to_cpu(str->di_minor)); | |
326 | break; | |
327 | }; | |
328 | ||
329 | ip->i_inode.i_uid = be32_to_cpu(str->di_uid); | |
330 | ip->i_inode.i_gid = be32_to_cpu(str->di_gid); | |
331 | gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); | |
332 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); | |
333 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
334 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
335 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
336 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
337 | ip->i_inode.i_atime = atime; | |
338 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
339 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
340 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
341 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
342 | ||
343 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
344 | ip->i_generation = be64_to_cpu(str->di_generation); | |
345 | ||
346 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
347 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
348 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
349 | gfs2_set_inode_flags(&ip->i_inode); |
350 | height = be16_to_cpu(str->di_height); | |
351 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
352 | goto corrupt; | |
353 | ip->i_height = (u8)height; | |
354 | ||
355 | depth = be16_to_cpu(str->di_depth); | |
356 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
357 | goto corrupt; | |
358 | ip->i_depth = (u8)depth; | |
359 | ip->i_entries = be32_to_cpu(str->di_entries); | |
360 | ||
d4b2cf1b SW |
361 | if (S_ISREG(ip->i_inode.i_mode)) |
362 | gfs2_set_aops(&ip->i_inode); | |
363 | ||
364 | return 0; | |
365 | corrupt: | |
366 | gfs2_consist_inode(ip); | |
367 | return -EIO; | |
368 | } | |
369 | ||
370 | /** | |
371 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
372 | * @ip: The GFS2 inode | |
373 | * | |
374 | * Returns: errno | |
375 | */ | |
376 | ||
377 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
378 | { | |
379 | struct buffer_head *dibh; | |
380 | int error; | |
381 | ||
382 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
383 | if (error) | |
384 | return error; | |
385 | ||
386 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) { | |
387 | brelse(dibh); | |
388 | return -EIO; | |
389 | } | |
390 | ||
391 | error = gfs2_dinode_in(ip, dibh->b_data); | |
392 | brelse(dibh); | |
393 | clear_bit(GIF_INVALID, &ip->i_flags); | |
394 | ||
395 | return error; | |
396 | } | |
397 | ||
b3b94faa DT |
398 | /** |
399 | * inode_go_lock - operation done after an inode lock is locked by a process | |
400 | * @gl: the glock | |
401 | * @flags: | |
402 | * | |
403 | * Returns: errno | |
404 | */ | |
405 | ||
406 | static int inode_go_lock(struct gfs2_holder *gh) | |
407 | { | |
408 | struct gfs2_glock *gl = gh->gh_gl; | |
813e0c46 | 409 | struct gfs2_sbd *sdp = gl->gl_sbd; |
5c676f6d | 410 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
411 | int error = 0; |
412 | ||
091806ed | 413 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
414 | return 0; |
415 | ||
bfded27b | 416 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
417 | error = gfs2_inode_refresh(ip); |
418 | if (error) | |
419 | return error; | |
b3b94faa DT |
420 | } |
421 | ||
383f01fb | 422 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 423 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
424 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
425 | spin_lock(&sdp->sd_trunc_lock); | |
426 | if (list_empty(&ip->i_trunc_list)) | |
427 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); | |
428 | spin_unlock(&sdp->sd_trunc_lock); | |
429 | wake_up(&sdp->sd_quota_wait); | |
430 | return 1; | |
431 | } | |
b3b94faa DT |
432 | |
433 | return error; | |
434 | } | |
435 | ||
6802e340 SW |
436 | /** |
437 | * inode_go_dump - print information about an inode | |
438 | * @seq: The iterator | |
439 | * @ip: the inode | |
440 | * | |
441 | * Returns: 0 on success, -ENOBUFS when we run out of space | |
442 | */ | |
443 | ||
444 | static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) | |
445 | { | |
446 | const struct gfs2_inode *ip = gl->gl_object; | |
447 | if (ip == NULL) | |
448 | return 0; | |
a2e0f799 | 449 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
450 | (unsigned long long)ip->i_no_formal_ino, |
451 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
452 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
453 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 454 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
455 | return 0; |
456 | } | |
457 | ||
b3b94faa | 458 | /** |
3042a2cc | 459 | * trans_go_sync - promote/demote the transaction glock |
b3b94faa DT |
460 | * @gl: the glock |
461 | * @state: the requested state | |
462 | * @flags: | |
463 | * | |
464 | */ | |
465 | ||
3042a2cc | 466 | static void trans_go_sync(struct gfs2_glock *gl) |
b3b94faa DT |
467 | { |
468 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
469 | ||
470 | if (gl->gl_state != LM_ST_UNLOCKED && | |
471 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { | |
472 | gfs2_meta_syncfs(sdp); | |
473 | gfs2_log_shutdown(sdp); | |
474 | } | |
b3b94faa DT |
475 | } |
476 | ||
477 | /** | |
478 | * trans_go_xmote_bh - After promoting/demoting the transaction glock | |
479 | * @gl: the glock | |
480 | * | |
481 | */ | |
482 | ||
6802e340 | 483 | static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa DT |
484 | { |
485 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
feaa7bba | 486 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 487 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 488 | struct gfs2_log_header_host head; |
b3b94faa DT |
489 | int error; |
490 | ||
6802e340 | 491 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 492 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
493 | |
494 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
495 | if (error) | |
496 | gfs2_consist(sdp); | |
497 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
498 | gfs2_consist(sdp); | |
499 | ||
500 | /* Initialize some head of the log stuff */ | |
501 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
502 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
503 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
504 | } | |
505 | } | |
6802e340 | 506 | return 0; |
b3b94faa DT |
507 | } |
508 | ||
97cc1025 SW |
509 | /** |
510 | * trans_go_demote_ok | |
511 | * @gl: the glock | |
512 | * | |
513 | * Always returns 0 | |
514 | */ | |
515 | ||
516 | static int trans_go_demote_ok(const struct gfs2_glock *gl) | |
517 | { | |
518 | return 0; | |
519 | } | |
520 | ||
b94a170e BM |
521 | /** |
522 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
523 | * @gl: the glock | |
524 | * | |
525 | * gl_spin lock is held while calling this | |
526 | */ | |
527 | static void iopen_go_callback(struct gfs2_glock *gl) | |
528 | { | |
529 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; | |
001e8e8d SW |
530 | struct gfs2_sbd *sdp = gl->gl_sbd; |
531 | ||
532 | if (sdp->sd_vfs->s_flags & MS_RDONLY) | |
533 | return; | |
b94a170e BM |
534 | |
535 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 536 | gl->gl_state == LM_ST_SHARED && ip) { |
b94a170e BM |
537 | gfs2_glock_hold(gl); |
538 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) | |
539 | gfs2_glock_put_nolock(gl); | |
540 | } | |
541 | } | |
542 | ||
8fb4b536 | 543 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 544 | .go_type = LM_TYPE_META, |
b3b94faa DT |
545 | }; |
546 | ||
8fb4b536 | 547 | const struct gfs2_glock_operations gfs2_inode_glops = { |
3042a2cc | 548 | .go_xmote_th = inode_go_sync, |
b3b94faa DT |
549 | .go_inval = inode_go_inval, |
550 | .go_demote_ok = inode_go_demote_ok, | |
551 | .go_lock = inode_go_lock, | |
6802e340 | 552 | .go_dump = inode_go_dump, |
ea67eedb | 553 | .go_type = LM_TYPE_INODE, |
009d8518 | 554 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
555 | }; |
556 | ||
8fb4b536 | 557 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
6bac243f SW |
558 | .go_xmote_th = rgrp_go_sync, |
559 | .go_inval = rgrp_go_inval, | |
7c9ca621 BP |
560 | .go_lock = gfs2_rgrp_go_lock, |
561 | .go_unlock = gfs2_rgrp_go_unlock, | |
09010978 | 562 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 563 | .go_type = LM_TYPE_RGRP, |
009d8518 | 564 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
565 | }; |
566 | ||
8fb4b536 | 567 | const struct gfs2_glock_operations gfs2_trans_glops = { |
3042a2cc | 568 | .go_xmote_th = trans_go_sync, |
b3b94faa | 569 | .go_xmote_bh = trans_go_xmote_bh, |
97cc1025 | 570 | .go_demote_ok = trans_go_demote_ok, |
ea67eedb | 571 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
572 | }; |
573 | ||
8fb4b536 | 574 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 575 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 576 | .go_callback = iopen_go_callback, |
b3b94faa DT |
577 | }; |
578 | ||
8fb4b536 | 579 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 580 | .go_type = LM_TYPE_FLOCK, |
b3b94faa DT |
581 | }; |
582 | ||
8fb4b536 | 583 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 584 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
585 | }; |
586 | ||
8fb4b536 | 587 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 588 | .go_type = LM_TYPE_QUOTA, |
b3b94faa DT |
589 | }; |
590 | ||
8fb4b536 | 591 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 592 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
593 | }; |
594 | ||
64d576ba SW |
595 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
596 | [LM_TYPE_META] = &gfs2_meta_glops, | |
597 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
598 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
599 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
600 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
601 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
602 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
603 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
604 | }; | |
605 |