Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 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 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
5c676f6d | 15 | #include <linux/gfs2_ondisk.h> |
7d308590 | 16 | #include <linux/lm_interface.h> |
b3b94faa DT |
17 | |
18 | #include "gfs2.h" | |
5c676f6d | 19 | #include "incore.h" |
2332c443 | 20 | #include "inode.h" |
b3b94faa DT |
21 | #include "glock.h" |
22 | #include "log.h" | |
23 | #include "lops.h" | |
24 | #include "meta_io.h" | |
25 | #include "recovery.h" | |
26 | #include "rgrp.h" | |
27 | #include "trans.h" | |
5c676f6d | 28 | #include "util.h" |
b3b94faa DT |
29 | |
30 | static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) | |
31 | { | |
32 | struct gfs2_glock *gl; | |
5c676f6d | 33 | struct gfs2_trans *tr = current->journal_info; |
b3b94faa | 34 | |
5c676f6d | 35 | tr->tr_touched = 1; |
b3b94faa | 36 | |
b3b94faa DT |
37 | gl = container_of(le, struct gfs2_glock, gl_le); |
38 | if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl))) | |
39 | return; | |
b3b94faa DT |
40 | |
41 | gfs2_log_lock(sdp); | |
68835625 BM |
42 | if (!list_empty(&le->le_list)){ |
43 | gfs2_log_unlock(sdp); | |
44 | return; | |
45 | } | |
46 | gfs2_glock_hold(gl); | |
47 | set_bit(GLF_DIRTY, &gl->gl_flags); | |
b3b94faa DT |
48 | sdp->sd_log_num_gl++; |
49 | list_add(&le->le_list, &sdp->sd_log_le_gl); | |
50 | gfs2_log_unlock(sdp); | |
51 | } | |
52 | ||
53 | static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) | |
54 | { | |
55 | struct list_head *head = &sdp->sd_log_le_gl; | |
56 | struct gfs2_glock *gl; | |
57 | ||
58 | while (!list_empty(head)) { | |
59 | gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list); | |
60 | list_del_init(&gl->gl_le.le_list); | |
61 | sdp->sd_log_num_gl--; | |
62 | ||
63 | gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)); | |
64 | gfs2_glock_put(gl); | |
65 | } | |
66 | gfs2_assert_warn(sdp, !sdp->sd_log_num_gl); | |
67 | } | |
68 | ||
69 | static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) | |
70 | { | |
71 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); | |
72 | struct gfs2_trans *tr; | |
73 | ||
8bd95727 SW |
74 | gfs2_log_lock(sdp); |
75 | if (!list_empty(&bd->bd_list_tr)) { | |
76 | gfs2_log_unlock(sdp); | |
b3b94faa | 77 | return; |
8bd95727 | 78 | } |
5c676f6d | 79 | tr = current->journal_info; |
b3b94faa DT |
80 | tr->tr_touched = 1; |
81 | tr->tr_num_buf++; | |
82 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); | |
8bd95727 | 83 | gfs2_log_unlock(sdp); |
b3b94faa DT |
84 | |
85 | if (!list_empty(&le->le_list)) | |
86 | return; | |
87 | ||
88 | gfs2_trans_add_gl(bd->bd_gl); | |
89 | ||
90 | gfs2_meta_check(sdp, bd->bd_bh); | |
a98ab220 | 91 | gfs2_pin(sdp, bd->bd_bh); |
b3b94faa DT |
92 | gfs2_log_lock(sdp); |
93 | sdp->sd_log_num_buf++; | |
94 | list_add(&le->le_list, &sdp->sd_log_le_buf); | |
95 | gfs2_log_unlock(sdp); | |
96 | ||
97 | tr->tr_num_buf_new++; | |
98 | } | |
99 | ||
100 | static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) | |
101 | { | |
102 | struct list_head *head = &tr->tr_list_buf; | |
103 | struct gfs2_bufdata *bd; | |
104 | ||
8bd95727 | 105 | gfs2_log_lock(sdp); |
b3b94faa DT |
106 | while (!list_empty(head)) { |
107 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr); | |
108 | list_del_init(&bd->bd_list_tr); | |
109 | tr->tr_num_buf--; | |
110 | } | |
8bd95727 | 111 | gfs2_log_unlock(sdp); |
b3b94faa DT |
112 | gfs2_assert_warn(sdp, !tr->tr_num_buf); |
113 | } | |
114 | ||
115 | static void buf_lo_before_commit(struct gfs2_sbd *sdp) | |
116 | { | |
117 | struct buffer_head *bh; | |
118 | struct gfs2_log_descriptor *ld; | |
119 | struct gfs2_bufdata *bd1 = NULL, *bd2; | |
905d2aef | 120 | unsigned int total; |
2332c443 | 121 | unsigned int offset = BUF_OFFSET; |
b3b94faa DT |
122 | unsigned int limit; |
123 | unsigned int num; | |
124 | unsigned n; | |
125 | __be64 *ptr; | |
126 | ||
2332c443 | 127 | limit = buf_limit(sdp); |
b3b94faa DT |
128 | /* for 4k blocks, limit = 503 */ |
129 | ||
905d2aef BP |
130 | gfs2_log_lock(sdp); |
131 | total = sdp->sd_log_num_buf; | |
b3b94faa DT |
132 | bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); |
133 | while(total) { | |
134 | num = total; | |
135 | if (total > limit) | |
136 | num = limit; | |
905d2aef | 137 | gfs2_log_unlock(sdp); |
b3b94faa | 138 | bh = gfs2_log_get_buf(sdp); |
905d2aef | 139 | gfs2_log_lock(sdp); |
b3b94faa DT |
140 | ld = (struct gfs2_log_descriptor *)bh->b_data; |
141 | ptr = (__be64 *)(bh->b_data + offset); | |
142 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
e3167ded SW |
143 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
144 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); | |
b3b94faa DT |
145 | ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA); |
146 | ld->ld_length = cpu_to_be32(num + 1); | |
147 | ld->ld_data1 = cpu_to_be32(num); | |
148 | ld->ld_data2 = cpu_to_be32(0); | |
149 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); | |
150 | ||
151 | n = 0; | |
568f4c96 SW |
152 | list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, |
153 | bd_le.le_list) { | |
b3b94faa DT |
154 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
155 | if (++n >= num) | |
156 | break; | |
157 | } | |
158 | ||
905d2aef | 159 | gfs2_log_unlock(sdp); |
b3b94faa DT |
160 | set_buffer_dirty(bh); |
161 | ll_rw_block(WRITE, 1, &bh); | |
905d2aef | 162 | gfs2_log_lock(sdp); |
b3b94faa DT |
163 | |
164 | n = 0; | |
568f4c96 SW |
165 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, |
166 | bd_le.le_list) { | |
905d2aef | 167 | gfs2_log_unlock(sdp); |
b3b94faa DT |
168 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
169 | set_buffer_dirty(bh); | |
170 | ll_rw_block(WRITE, 1, &bh); | |
905d2aef | 171 | gfs2_log_lock(sdp); |
b3b94faa DT |
172 | if (++n >= num) |
173 | break; | |
174 | } | |
175 | ||
905d2aef | 176 | BUG_ON(total < num); |
b3b94faa DT |
177 | total -= num; |
178 | } | |
905d2aef | 179 | gfs2_log_unlock(sdp); |
b3b94faa DT |
180 | } |
181 | ||
182 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) | |
183 | { | |
184 | struct list_head *head = &sdp->sd_log_le_buf; | |
185 | struct gfs2_bufdata *bd; | |
186 | ||
187 | while (!list_empty(head)) { | |
188 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); | |
189 | list_del_init(&bd->bd_le.le_list); | |
190 | sdp->sd_log_num_buf--; | |
191 | ||
a98ab220 | 192 | gfs2_unpin(sdp, bd->bd_bh, ai); |
b3b94faa DT |
193 | } |
194 | gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); | |
195 | } | |
196 | ||
197 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 198 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 199 | { |
feaa7bba | 200 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
201 | |
202 | if (pass != 0) | |
203 | return; | |
204 | ||
205 | sdp->sd_found_blocks = 0; | |
206 | sdp->sd_replayed_blocks = 0; | |
207 | } | |
208 | ||
209 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
210 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
211 | int pass) | |
212 | { | |
feaa7bba SW |
213 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
214 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
5c676f6d | 215 | struct gfs2_glock *gl = ip->i_gl; |
b3b94faa DT |
216 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
217 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 | 218 | u64 blkno; |
b3b94faa DT |
219 | int error = 0; |
220 | ||
221 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) | |
222 | return 0; | |
223 | ||
224 | gfs2_replay_incr_blk(sdp, &start); | |
225 | ||
226 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { | |
227 | blkno = be64_to_cpu(*ptr++); | |
228 | ||
229 | sdp->sd_found_blocks++; | |
230 | ||
231 | if (gfs2_revoke_check(sdp, blkno, start)) | |
232 | continue; | |
233 | ||
234 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
82ffa516 SW |
235 | if (error) |
236 | return error; | |
b3b94faa DT |
237 | |
238 | bh_ip = gfs2_meta_new(gl, blkno); | |
239 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
240 | ||
241 | if (gfs2_meta_check(sdp, bh_ip)) | |
242 | error = -EIO; | |
243 | else | |
244 | mark_buffer_dirty(bh_ip); | |
245 | ||
246 | brelse(bh_log); | |
247 | brelse(bh_ip); | |
248 | ||
249 | if (error) | |
250 | break; | |
251 | ||
252 | sdp->sd_replayed_blocks++; | |
253 | } | |
254 | ||
255 | return error; | |
256 | } | |
257 | ||
258 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
259 | { | |
feaa7bba SW |
260 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
261 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
b3b94faa DT |
262 | |
263 | if (error) { | |
7276b3b0 | 264 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
265 | return; |
266 | } | |
267 | if (pass != 1) | |
268 | return; | |
269 | ||
7276b3b0 | 270 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
271 | |
272 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", | |
273 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); | |
274 | } | |
275 | ||
276 | static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) | |
277 | { | |
278 | struct gfs2_trans *tr; | |
279 | ||
5c676f6d | 280 | tr = current->journal_info; |
b3b94faa DT |
281 | tr->tr_touched = 1; |
282 | tr->tr_num_revoke++; | |
283 | ||
284 | gfs2_log_lock(sdp); | |
285 | sdp->sd_log_num_revoke++; | |
286 | list_add(&le->le_list, &sdp->sd_log_le_revoke); | |
287 | gfs2_log_unlock(sdp); | |
288 | } | |
289 | ||
290 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp) | |
291 | { | |
292 | struct gfs2_log_descriptor *ld; | |
293 | struct gfs2_meta_header *mh; | |
294 | struct buffer_head *bh; | |
295 | unsigned int offset; | |
296 | struct list_head *head = &sdp->sd_log_le_revoke; | |
297 | struct gfs2_revoke *rv; | |
298 | ||
299 | if (!sdp->sd_log_num_revoke) | |
300 | return; | |
301 | ||
302 | bh = gfs2_log_get_buf(sdp); | |
303 | ld = (struct gfs2_log_descriptor *)bh->b_data; | |
304 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
e3167ded SW |
305 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
306 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); | |
b3b94faa | 307 | ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE); |
568f4c96 | 308 | ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, |
cd915493 | 309 | sizeof(u64))); |
b3b94faa DT |
310 | ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); |
311 | ld->ld_data2 = cpu_to_be32(0); | |
312 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); | |
313 | offset = sizeof(struct gfs2_log_descriptor); | |
314 | ||
315 | while (!list_empty(head)) { | |
316 | rv = list_entry(head->next, struct gfs2_revoke, rv_le.le_list); | |
13538b8e | 317 | list_del_init(&rv->rv_le.le_list); |
b3b94faa DT |
318 | sdp->sd_log_num_revoke--; |
319 | ||
cd915493 | 320 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
b3b94faa DT |
321 | set_buffer_dirty(bh); |
322 | ll_rw_block(WRITE, 1, &bh); | |
323 | ||
324 | bh = gfs2_log_get_buf(sdp); | |
325 | mh = (struct gfs2_meta_header *)bh->b_data; | |
326 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); | |
e3167ded SW |
327 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
328 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); | |
b3b94faa DT |
329 | offset = sizeof(struct gfs2_meta_header); |
330 | } | |
331 | ||
332 | *(__be64 *)(bh->b_data + offset) = cpu_to_be64(rv->rv_blkno); | |
333 | kfree(rv); | |
334 | ||
cd915493 | 335 | offset += sizeof(u64); |
b3b94faa DT |
336 | } |
337 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); | |
338 | ||
339 | set_buffer_dirty(bh); | |
340 | ll_rw_block(WRITE, 1, &bh); | |
341 | } | |
342 | ||
343 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 344 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 345 | { |
feaa7bba | 346 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
347 | |
348 | if (pass != 0) | |
349 | return; | |
350 | ||
351 | sdp->sd_found_revokes = 0; | |
352 | sdp->sd_replay_tail = head->lh_tail; | |
353 | } | |
354 | ||
355 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
356 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
357 | int pass) | |
358 | { | |
feaa7bba | 359 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
360 | unsigned int blks = be32_to_cpu(ld->ld_length); |
361 | unsigned int revokes = be32_to_cpu(ld->ld_data1); | |
362 | struct buffer_head *bh; | |
363 | unsigned int offset; | |
cd915493 | 364 | u64 blkno; |
b3b94faa DT |
365 | int first = 1; |
366 | int error; | |
367 | ||
368 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) | |
369 | return 0; | |
370 | ||
371 | offset = sizeof(struct gfs2_log_descriptor); | |
372 | ||
373 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { | |
374 | error = gfs2_replay_read_block(jd, start, &bh); | |
375 | if (error) | |
376 | return error; | |
377 | ||
378 | if (!first) | |
379 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); | |
380 | ||
cd915493 | 381 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
b3b94faa DT |
382 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
383 | ||
384 | error = gfs2_revoke_add(sdp, blkno, start); | |
385 | if (error < 0) | |
386 | return error; | |
387 | else if (error) | |
388 | sdp->sd_found_revokes++; | |
389 | ||
390 | if (!--revokes) | |
391 | break; | |
cd915493 | 392 | offset += sizeof(u64); |
b3b94faa DT |
393 | } |
394 | ||
395 | brelse(bh); | |
396 | offset = sizeof(struct gfs2_meta_header); | |
397 | first = 0; | |
398 | } | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
404 | { | |
feaa7bba | 405 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
406 | |
407 | if (error) { | |
408 | gfs2_revoke_clean(sdp); | |
409 | return; | |
410 | } | |
411 | if (pass != 1) | |
412 | return; | |
413 | ||
414 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", | |
415 | jd->jd_jid, sdp->sd_found_revokes); | |
416 | ||
417 | gfs2_revoke_clean(sdp); | |
418 | } | |
419 | ||
420 | static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) | |
421 | { | |
422 | struct gfs2_rgrpd *rgd; | |
5c676f6d | 423 | struct gfs2_trans *tr = current->journal_info; |
b3b94faa | 424 | |
5c676f6d | 425 | tr->tr_touched = 1; |
b3b94faa | 426 | |
b3b94faa | 427 | rgd = container_of(le, struct gfs2_rgrpd, rd_le); |
b3b94faa DT |
428 | |
429 | gfs2_log_lock(sdp); | |
68835625 BM |
430 | if (!list_empty(&le->le_list)){ |
431 | gfs2_log_unlock(sdp); | |
432 | return; | |
433 | } | |
434 | gfs2_rgrp_bh_hold(rgd); | |
b3b94faa DT |
435 | sdp->sd_log_num_rg++; |
436 | list_add(&le->le_list, &sdp->sd_log_le_rg); | |
907b9bce | 437 | gfs2_log_unlock(sdp); |
b3b94faa DT |
438 | } |
439 | ||
440 | static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) | |
441 | { | |
442 | struct list_head *head = &sdp->sd_log_le_rg; | |
443 | struct gfs2_rgrpd *rgd; | |
444 | ||
445 | while (!list_empty(head)) { | |
446 | rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list); | |
447 | list_del_init(&rgd->rd_le.le_list); | |
448 | sdp->sd_log_num_rg--; | |
449 | ||
450 | gfs2_rgrp_repolish_clones(rgd); | |
451 | gfs2_rgrp_bh_put(rgd); | |
452 | } | |
453 | gfs2_assert_warn(sdp, !sdp->sd_log_num_rg); | |
454 | } | |
455 | ||
18ec7d5c SW |
456 | /** |
457 | * databuf_lo_add - Add a databuf to the transaction. | |
458 | * | |
459 | * This is used in two distinct cases: | |
460 | * i) In ordered write mode | |
461 | * We put the data buffer on a list so that we can ensure that its | |
462 | * synced to disk at the right time | |
463 | * ii) In journaled data mode | |
464 | * We need to journal the data block in the same way as metadata in | |
465 | * the functions above. The difference is that here we have a tag | |
466 | * which is two __be64's being the block number (as per meta data) | |
467 | * and a flag which says whether the data block needs escaping or | |
468 | * not. This means we need a new log entry for each 251 or so data | |
469 | * blocks, which isn't an enormous overhead but twice as much as | |
470 | * for normal metadata blocks. | |
471 | */ | |
b3b94faa DT |
472 | static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
473 | { | |
18ec7d5c | 474 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
5c676f6d | 475 | struct gfs2_trans *tr = current->journal_info; |
18ec7d5c | 476 | struct address_space *mapping = bd->bd_bh->b_page->mapping; |
feaa7bba | 477 | struct gfs2_inode *ip = GFS2_I(mapping->host); |
b3b94faa | 478 | |
8bd95727 | 479 | gfs2_log_lock(sdp); |
2332c443 | 480 | if (!list_empty(&bd->bd_list_tr)) { |
8bd95727 | 481 | gfs2_log_unlock(sdp); |
2332c443 | 482 | return; |
18ec7d5c | 483 | } |
2332c443 | 484 | tr->tr_touched = 1; |
773ed1a0 RP |
485 | if (gfs2_is_jdata(ip)) { |
486 | tr->tr_num_buf++; | |
487 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); | |
488 | } | |
2332c443 RP |
489 | gfs2_log_unlock(sdp); |
490 | if (!list_empty(&le->le_list)) | |
491 | return; | |
492 | ||
b61dde79 | 493 | gfs2_trans_add_gl(bd->bd_gl); |
2332c443 | 494 | if (gfs2_is_jdata(ip)) { |
2332c443 RP |
495 | gfs2_pin(sdp, bd->bd_bh); |
496 | tr->tr_num_databuf_new++; | |
13538b8e | 497 | } |
2332c443 | 498 | gfs2_log_lock(sdp); |
ec217e0e BP |
499 | if (gfs2_is_jdata(ip)) |
500 | sdp->sd_log_num_jdata++; | |
bdcb8856 | 501 | sdp->sd_log_num_databuf++; |
2332c443 | 502 | list_add(&le->le_list, &sdp->sd_log_le_databuf); |
b3b94faa DT |
503 | gfs2_log_unlock(sdp); |
504 | } | |
505 | ||
18ec7d5c SW |
506 | static int gfs2_check_magic(struct buffer_head *bh) |
507 | { | |
508 | struct page *page = bh->b_page; | |
509 | void *kaddr; | |
510 | __be32 *ptr; | |
511 | int rv = 0; | |
512 | ||
513 | kaddr = kmap_atomic(page, KM_USER0); | |
514 | ptr = kaddr + bh_offset(bh); | |
515 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) | |
516 | rv = 1; | |
c312c4fd | 517 | kunmap_atomic(kaddr, KM_USER0); |
18ec7d5c SW |
518 | |
519 | return rv; | |
520 | } | |
521 | ||
522 | /** | |
523 | * databuf_lo_before_commit - Scan the data buffers, writing as we go | |
524 | * | |
525 | * Here we scan through the lists of buffers and make the assumption | |
526 | * that any buffer thats been pinned is being journaled, and that | |
527 | * any unpinned buffer is an ordered write data buffer and therefore | |
528 | * will be written back rather than journaled. | |
529 | */ | |
b3b94faa DT |
530 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp) |
531 | { | |
b3b94faa | 532 | LIST_HEAD(started); |
18ec7d5c | 533 | struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt; |
70209331 | 534 | struct buffer_head *bh = NULL,*bh1 = NULL; |
18ec7d5c SW |
535 | struct gfs2_log_descriptor *ld; |
536 | unsigned int limit; | |
bdcb8856 | 537 | unsigned int total_dbuf; |
905d2aef | 538 | unsigned int total_jdata; |
18ec7d5c | 539 | unsigned int num, n; |
f55ab26a | 540 | __be64 *ptr = NULL; |
b3b94faa | 541 | |
2332c443 | 542 | limit = databuf_limit(sdp); |
b3b94faa | 543 | |
18ec7d5c SW |
544 | /* |
545 | * Start writing ordered buffers, write journaled buffers | |
546 | * into the log along with a header | |
547 | */ | |
f55ab26a | 548 | gfs2_log_lock(sdp); |
bdcb8856 | 549 | total_dbuf = sdp->sd_log_num_databuf; |
905d2aef | 550 | total_jdata = sdp->sd_log_num_jdata; |
568f4c96 SW |
551 | bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, |
552 | bd_le.le_list); | |
18ec7d5c SW |
553 | while(total_dbuf) { |
554 | num = total_jdata; | |
555 | if (num > limit) | |
556 | num = limit; | |
557 | n = 0; | |
568f4c96 SW |
558 | list_for_each_entry_safe_continue(bd1, bdt, |
559 | &sdp->sd_log_le_databuf, | |
560 | bd_le.le_list) { | |
70209331 RC |
561 | /* store off the buffer head in a local ptr since |
562 | * gfs2_bufdata might change when we drop the log lock | |
563 | */ | |
564 | bh1 = bd1->bd_bh; | |
565 | ||
18ec7d5c | 566 | /* An ordered write buffer */ |
70209331 | 567 | if (bh1 && !buffer_pinned(bh1)) { |
18ec7d5c SW |
568 | list_move(&bd1->bd_le.le_list, &started); |
569 | if (bd1 == bd2) { | |
570 | bd2 = NULL; | |
568f4c96 SW |
571 | bd2 = list_prepare_entry(bd2, |
572 | &sdp->sd_log_le_databuf, | |
573 | bd_le.le_list); | |
18ec7d5c SW |
574 | } |
575 | total_dbuf--; | |
70209331 RC |
576 | if (bh1) { |
577 | if (buffer_dirty(bh1)) { | |
578 | get_bh(bh1); | |
579 | ||
f55ab26a | 580 | gfs2_log_unlock(sdp); |
70209331 RC |
581 | |
582 | ll_rw_block(SWRITE, 1, &bh1); | |
583 | brelse(bh1); | |
584 | ||
f55ab26a | 585 | gfs2_log_lock(sdp); |
18ec7d5c | 586 | } |
18ec7d5c SW |
587 | continue; |
588 | } | |
18ec7d5c | 589 | continue; |
70209331 | 590 | } else if (bh1) { /* A journaled buffer */ |
18ec7d5c SW |
591 | int magic; |
592 | gfs2_log_unlock(sdp); | |
18ec7d5c SW |
593 | if (!bh) { |
594 | bh = gfs2_log_get_buf(sdp); | |
568f4c96 SW |
595 | ld = (struct gfs2_log_descriptor *) |
596 | bh->b_data; | |
2332c443 RP |
597 | ptr = (__be64 *)(bh->b_data + |
598 | DATABUF_OFFSET); | |
568f4c96 SW |
599 | ld->ld_header.mh_magic = |
600 | cpu_to_be32(GFS2_MAGIC); | |
601 | ld->ld_header.mh_type = | |
e3167ded | 602 | cpu_to_be32(GFS2_METATYPE_LD); |
568f4c96 | 603 | ld->ld_header.mh_format = |
e3167ded | 604 | cpu_to_be32(GFS2_FORMAT_LD); |
568f4c96 SW |
605 | ld->ld_type = |
606 | cpu_to_be32(GFS2_LOG_DESC_JDATA); | |
18ec7d5c SW |
607 | ld->ld_length = cpu_to_be32(num + 1); |
608 | ld->ld_data1 = cpu_to_be32(num); | |
609 | ld->ld_data2 = cpu_to_be32(0); | |
610 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); | |
611 | } | |
70209331 RC |
612 | magic = gfs2_check_magic(bh1); |
613 | *ptr++ = cpu_to_be64(bh1->b_blocknr); | |
18ec7d5c | 614 | *ptr++ = cpu_to_be64((__u64)magic); |
70209331 | 615 | clear_buffer_escaped(bh1); |
18ec7d5c | 616 | if (unlikely(magic != 0)) |
70209331 | 617 | set_buffer_escaped(bh1); |
f55ab26a | 618 | gfs2_log_lock(sdp); |
2332c443 | 619 | if (++n >= num) |
18ec7d5c | 620 | break; |
70209331 | 621 | } else if (!bh1) { |
623d9355 SW |
622 | total_dbuf--; |
623 | sdp->sd_log_num_databuf--; | |
624 | list_del_init(&bd1->bd_le.le_list); | |
625 | if (bd1 == bd2) { | |
626 | bd2 = NULL; | |
627 | bd2 = list_prepare_entry(bd2, | |
628 | &sdp->sd_log_le_databuf, | |
629 | bd_le.le_list); | |
630 | } | |
631 | kmem_cache_free(gfs2_bufdata_cachep, bd1); | |
18ec7d5c SW |
632 | } |
633 | } | |
f55ab26a | 634 | gfs2_log_unlock(sdp); |
b3b94faa | 635 | if (bh) { |
18ec7d5c SW |
636 | set_buffer_dirty(bh); |
637 | ll_rw_block(WRITE, 1, &bh); | |
638 | bh = NULL; | |
905d2aef | 639 | ptr = NULL; |
18ec7d5c SW |
640 | } |
641 | n = 0; | |
f55ab26a | 642 | gfs2_log_lock(sdp); |
568f4c96 SW |
643 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, |
644 | bd_le.le_list) { | |
18ec7d5c SW |
645 | if (!bd2->bd_bh) |
646 | continue; | |
647 | /* copy buffer if it needs escaping */ | |
f55ab26a | 648 | gfs2_log_unlock(sdp); |
18ec7d5c SW |
649 | if (unlikely(buffer_escaped(bd2->bd_bh))) { |
650 | void *kaddr; | |
651 | struct page *page = bd2->bd_bh->b_page; | |
652 | bh = gfs2_log_get_buf(sdp); | |
653 | kaddr = kmap_atomic(page, KM_USER0); | |
568f4c96 SW |
654 | memcpy(bh->b_data, |
655 | kaddr + bh_offset(bd2->bd_bh), | |
656 | sdp->sd_sb.sb_bsize); | |
c312c4fd | 657 | kunmap_atomic(kaddr, KM_USER0); |
18ec7d5c SW |
658 | *(__be32 *)bh->b_data = 0; |
659 | } else { | |
660 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); | |
b3b94faa | 661 | } |
18ec7d5c SW |
662 | set_buffer_dirty(bh); |
663 | ll_rw_block(WRITE, 1, &bh); | |
f55ab26a | 664 | gfs2_log_lock(sdp); |
18ec7d5c SW |
665 | if (++n >= num) |
666 | break; | |
667 | } | |
668 | bh = NULL; | |
bdcb8856 | 669 | BUG_ON(total_dbuf < num); |
18ec7d5c SW |
670 | total_dbuf -= num; |
671 | total_jdata -= num; | |
b3b94faa | 672 | } |
f55ab26a SW |
673 | gfs2_log_unlock(sdp); |
674 | ||
18ec7d5c | 675 | /* Wait on all ordered buffers */ |
b3b94faa | 676 | while (!list_empty(&started)) { |
13538b8e | 677 | gfs2_log_lock(sdp); |
568f4c96 SW |
678 | bd1 = list_entry(started.next, struct gfs2_bufdata, |
679 | bd_le.le_list); | |
08867605 | 680 | list_del_init(&bd1->bd_le.le_list); |
b3b94faa | 681 | sdp->sd_log_num_databuf--; |
18ec7d5c | 682 | bh = bd1->bd_bh; |
b3b94faa | 683 | if (bh) { |
5c676f6d | 684 | bh->b_private = NULL; |
15d00c0b | 685 | get_bh(bh); |
b3b94faa DT |
686 | gfs2_log_unlock(sdp); |
687 | wait_on_buffer(bh); | |
688 | brelse(bh); | |
689 | } else | |
690 | gfs2_log_unlock(sdp); | |
691 | ||
3a8476dd | 692 | kmem_cache_free(gfs2_bufdata_cachep, bd1); |
b3b94faa DT |
693 | } |
694 | ||
18ec7d5c SW |
695 | /* We've removed all the ordered write bufs here, so only jdata left */ |
696 | gfs2_assert_warn(sdp, sdp->sd_log_num_databuf == sdp->sd_log_num_jdata); | |
697 | } | |
698 | ||
699 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
700 | struct gfs2_log_descriptor *ld, | |
701 | __be64 *ptr, int pass) | |
702 | { | |
feaa7bba SW |
703 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
704 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
5c676f6d | 705 | struct gfs2_glock *gl = ip->i_gl; |
18ec7d5c SW |
706 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
707 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 SW |
708 | u64 blkno; |
709 | u64 esc; | |
18ec7d5c SW |
710 | int error = 0; |
711 | ||
712 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) | |
713 | return 0; | |
714 | ||
715 | gfs2_replay_incr_blk(sdp, &start); | |
716 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { | |
717 | blkno = be64_to_cpu(*ptr++); | |
718 | esc = be64_to_cpu(*ptr++); | |
719 | ||
720 | sdp->sd_found_blocks++; | |
721 | ||
722 | if (gfs2_revoke_check(sdp, blkno, start)) | |
723 | continue; | |
724 | ||
725 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
726 | if (error) | |
727 | return error; | |
728 | ||
729 | bh_ip = gfs2_meta_new(gl, blkno); | |
730 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
731 | ||
732 | /* Unescape */ | |
733 | if (esc) { | |
734 | __be32 *eptr = (__be32 *)bh_ip->b_data; | |
735 | *eptr = cpu_to_be32(GFS2_MAGIC); | |
736 | } | |
737 | mark_buffer_dirty(bh_ip); | |
738 | ||
739 | brelse(bh_log); | |
740 | brelse(bh_ip); | |
741 | if (error) | |
742 | break; | |
743 | ||
744 | sdp->sd_replayed_blocks++; | |
745 | } | |
746 | ||
747 | return error; | |
748 | } | |
749 | ||
750 | /* FIXME: sort out accounting for log blocks etc. */ | |
751 | ||
752 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
753 | { | |
feaa7bba SW |
754 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
755 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
18ec7d5c SW |
756 | |
757 | if (error) { | |
7276b3b0 | 758 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
759 | return; |
760 | } | |
761 | if (pass != 1) | |
762 | return; | |
763 | ||
764 | /* data sync? */ | |
7276b3b0 | 765 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
766 | |
767 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", | |
768 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); | |
769 | } | |
770 | ||
771 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) | |
772 | { | |
773 | struct list_head *head = &sdp->sd_log_le_databuf; | |
774 | struct gfs2_bufdata *bd; | |
775 | ||
776 | while (!list_empty(head)) { | |
777 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); | |
b8e1aabf | 778 | list_del_init(&bd->bd_le.le_list); |
18ec7d5c SW |
779 | sdp->sd_log_num_databuf--; |
780 | sdp->sd_log_num_jdata--; | |
781 | gfs2_unpin(sdp, bd->bd_bh, ai); | |
18ec7d5c | 782 | } |
b3b94faa | 783 | gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); |
18ec7d5c | 784 | gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata); |
b3b94faa DT |
785 | } |
786 | ||
18ec7d5c | 787 | |
b09e593d | 788 | const struct gfs2_log_operations gfs2_glock_lops = { |
b3b94faa DT |
789 | .lo_add = glock_lo_add, |
790 | .lo_after_commit = glock_lo_after_commit, | |
ea67eedb | 791 | .lo_name = "glock", |
b3b94faa DT |
792 | }; |
793 | ||
b09e593d | 794 | const struct gfs2_log_operations gfs2_buf_lops = { |
b3b94faa DT |
795 | .lo_add = buf_lo_add, |
796 | .lo_incore_commit = buf_lo_incore_commit, | |
797 | .lo_before_commit = buf_lo_before_commit, | |
798 | .lo_after_commit = buf_lo_after_commit, | |
799 | .lo_before_scan = buf_lo_before_scan, | |
800 | .lo_scan_elements = buf_lo_scan_elements, | |
801 | .lo_after_scan = buf_lo_after_scan, | |
ea67eedb | 802 | .lo_name = "buf", |
b3b94faa DT |
803 | }; |
804 | ||
b09e593d | 805 | const struct gfs2_log_operations gfs2_revoke_lops = { |
b3b94faa DT |
806 | .lo_add = revoke_lo_add, |
807 | .lo_before_commit = revoke_lo_before_commit, | |
808 | .lo_before_scan = revoke_lo_before_scan, | |
809 | .lo_scan_elements = revoke_lo_scan_elements, | |
810 | .lo_after_scan = revoke_lo_after_scan, | |
ea67eedb | 811 | .lo_name = "revoke", |
b3b94faa DT |
812 | }; |
813 | ||
b09e593d | 814 | const struct gfs2_log_operations gfs2_rg_lops = { |
b3b94faa DT |
815 | .lo_add = rg_lo_add, |
816 | .lo_after_commit = rg_lo_after_commit, | |
ea67eedb | 817 | .lo_name = "rg", |
b3b94faa DT |
818 | }; |
819 | ||
b09e593d | 820 | const struct gfs2_log_operations gfs2_databuf_lops = { |
b3b94faa | 821 | .lo_add = databuf_lo_add, |
18ec7d5c | 822 | .lo_incore_commit = buf_lo_incore_commit, |
b3b94faa | 823 | .lo_before_commit = databuf_lo_before_commit, |
18ec7d5c SW |
824 | .lo_after_commit = databuf_lo_after_commit, |
825 | .lo_scan_elements = databuf_lo_scan_elements, | |
826 | .lo_after_scan = databuf_lo_after_scan, | |
ea67eedb | 827 | .lo_name = "databuf", |
b3b94faa DT |
828 | }; |
829 | ||
b09e593d | 830 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
b3b94faa DT |
831 | &gfs2_glock_lops, |
832 | &gfs2_buf_lops, | |
833 | &gfs2_revoke_lops, | |
834 | &gfs2_rg_lops, | |
835 | &gfs2_databuf_lops, | |
ea67eedb | 836 | NULL, |
b3b94faa DT |
837 | }; |
838 |