Commit | Line | Data |
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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> | |
75ca61c1 | 15 | #include <linux/mempool.h> |
5c676f6d | 16 | #include <linux/gfs2_ondisk.h> |
c969f58c SW |
17 | #include <linux/bio.h> |
18 | #include <linux/fs.h> | |
7f63257d | 19 | #include <linux/list_sort.h> |
2a5f14f2 | 20 | #include <linux/blkdev.h> |
b3b94faa | 21 | |
2a5f14f2 | 22 | #include "bmap.h" |
c1696fb8 | 23 | #include "dir.h" |
b3b94faa | 24 | #include "gfs2.h" |
5c676f6d | 25 | #include "incore.h" |
2332c443 | 26 | #include "inode.h" |
b3b94faa DT |
27 | #include "glock.h" |
28 | #include "log.h" | |
29 | #include "lops.h" | |
30 | #include "meta_io.h" | |
31 | #include "recovery.h" | |
32 | #include "rgrp.h" | |
33 | #include "trans.h" | |
5c676f6d | 34 | #include "util.h" |
63997775 | 35 | #include "trace_gfs2.h" |
b3b94faa | 36 | |
9b9107a5 SW |
37 | /** |
38 | * gfs2_pin - Pin a buffer in memory | |
39 | * @sdp: The superblock | |
40 | * @bh: The buffer to be pinned | |
41 | * | |
42 | * The log lock must be held when calling this function | |
43 | */ | |
767f433f | 44 | void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) |
9b9107a5 SW |
45 | { |
46 | struct gfs2_bufdata *bd; | |
47 | ||
29687a2a | 48 | BUG_ON(!current->journal_info); |
9b9107a5 SW |
49 | |
50 | clear_buffer_dirty(bh); | |
51 | if (test_set_buffer_pinned(bh)) | |
52 | gfs2_assert_withdraw(sdp, 0); | |
53 | if (!buffer_uptodate(bh)) | |
9e1a9ecd | 54 | gfs2_io_error_bh_wd(sdp, bh); |
9b9107a5 SW |
55 | bd = bh->b_private; |
56 | /* If this buffer is in the AIL and it has already been written | |
57 | * to in-place disk block, remove it from the AIL. | |
58 | */ | |
c618e87a | 59 | spin_lock(&sdp->sd_ail_lock); |
16ca9412 BM |
60 | if (bd->bd_tr) |
61 | list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); | |
c618e87a | 62 | spin_unlock(&sdp->sd_ail_lock); |
9b9107a5 | 63 | get_bh(bh); |
5e687eac | 64 | atomic_inc(&sdp->sd_log_pinned); |
63997775 | 65 | trace_gfs2_pin(bd, 1); |
9b9107a5 SW |
66 | } |
67 | ||
7c9ca621 BP |
68 | static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) |
69 | { | |
70 | return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; | |
71 | } | |
72 | ||
73 | static void maybe_release_space(struct gfs2_bufdata *bd) | |
74 | { | |
75 | struct gfs2_glock *gl = bd->bd_gl; | |
15562c43 | 76 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
6f6597ba | 77 | struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); |
7c9ca621 BP |
78 | unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; |
79 | struct gfs2_bitmap *bi = rgd->rd_bits + index; | |
80 | ||
5a7c6690 | 81 | if (bi->bi_clone == NULL) |
7c9ca621 BP |
82 | return; |
83 | if (sdp->sd_args.ar_discard) | |
66fc061b | 84 | gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); |
7c9ca621 | 85 | memcpy(bi->bi_clone + bi->bi_offset, |
281b4952 | 86 | bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); |
7c9ca621 BP |
87 | clear_bit(GBF_FULL, &bi->bi_flags); |
88 | rgd->rd_free_clone = rgd->rd_free; | |
5ea5050c | 89 | rgd->rd_extfail_pt = rgd->rd_free; |
7c9ca621 BP |
90 | } |
91 | ||
9b9107a5 SW |
92 | /** |
93 | * gfs2_unpin - Unpin a buffer | |
94 | * @sdp: the filesystem the buffer belongs to | |
95 | * @bh: The buffer to unpin | |
96 | * @ai: | |
29687a2a | 97 | * @flags: The inode dirty flags |
9b9107a5 SW |
98 | * |
99 | */ | |
100 | ||
101 | static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
16ca9412 | 102 | struct gfs2_trans *tr) |
9b9107a5 SW |
103 | { |
104 | struct gfs2_bufdata *bd = bh->b_private; | |
105 | ||
29687a2a SW |
106 | BUG_ON(!buffer_uptodate(bh)); |
107 | BUG_ON(!buffer_pinned(bh)); | |
9b9107a5 SW |
108 | |
109 | lock_buffer(bh); | |
110 | mark_buffer_dirty(bh); | |
111 | clear_buffer_pinned(bh); | |
112 | ||
7c9ca621 BP |
113 | if (buffer_is_rgrp(bd)) |
114 | maybe_release_space(bd); | |
115 | ||
d6a079e8 | 116 | spin_lock(&sdp->sd_ail_lock); |
16ca9412 | 117 | if (bd->bd_tr) { |
9b9107a5 SW |
118 | list_del(&bd->bd_ail_st_list); |
119 | brelse(bh); | |
120 | } else { | |
121 | struct gfs2_glock *gl = bd->bd_gl; | |
122 | list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); | |
123 | atomic_inc(&gl->gl_ail_count); | |
124 | } | |
16ca9412 BM |
125 | bd->bd_tr = tr; |
126 | list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); | |
d6a079e8 DC |
127 | spin_unlock(&sdp->sd_ail_lock); |
128 | ||
29687a2a | 129 | clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
63997775 | 130 | trace_gfs2_pin(bd, 0); |
9b9107a5 | 131 | unlock_buffer(bh); |
5e687eac | 132 | atomic_dec(&sdp->sd_log_pinned); |
9b9107a5 SW |
133 | } |
134 | ||
e8c92ed7 | 135 | static void gfs2_log_incr_head(struct gfs2_sbd *sdp) |
16615be1 | 136 | { |
e8c92ed7 SW |
137 | BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && |
138 | (sdp->sd_log_flush_head != sdp->sd_log_head)); | |
139 | ||
722f6f62 | 140 | if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) |
e8c92ed7 | 141 | sdp->sd_log_flush_head = 0; |
16615be1 SW |
142 | } |
143 | ||
c1696fb8 | 144 | u64 gfs2_log_bmap(struct gfs2_sbd *sdp) |
16615be1 | 145 | { |
e8c92ed7 SW |
146 | unsigned int lbn = sdp->sd_log_flush_head; |
147 | struct gfs2_journal_extent *je; | |
148 | u64 block; | |
149 | ||
b50f227b SW |
150 | list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { |
151 | if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { | |
e8c92ed7 SW |
152 | block = je->dblock + lbn - je->lblock; |
153 | gfs2_log_incr_head(sdp); | |
154 | return block; | |
155 | } | |
156 | } | |
157 | ||
158 | return -1; | |
16615be1 SW |
159 | } |
160 | ||
e8c92ed7 SW |
161 | /** |
162 | * gfs2_end_log_write_bh - end log write of pagecache data with buffers | |
163 | * @sdp: The superblock | |
164 | * @bvec: The bio_vec | |
165 | * @error: The i/o status | |
166 | * | |
4519eaad | 167 | * This finds the relevant buffers and unlocks them and sets the |
e8c92ed7 SW |
168 | * error flag according to the status of the i/o request. This is |
169 | * used when the log is writing data which has an in-place version | |
170 | * that is pinned in the pagecache. | |
171 | */ | |
172 | ||
173 | static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, struct bio_vec *bvec, | |
4e4cbee9 | 174 | blk_status_t error) |
16615be1 | 175 | { |
e8c92ed7 SW |
176 | struct buffer_head *bh, *next; |
177 | struct page *page = bvec->bv_page; | |
178 | unsigned size; | |
179 | ||
180 | bh = page_buffers(page); | |
181 | size = bvec->bv_len; | |
182 | while (bh_offset(bh) < bvec->bv_offset) | |
183 | bh = bh->b_this_page; | |
184 | do { | |
185 | if (error) | |
87354e5d | 186 | mark_buffer_write_io_error(bh); |
e8c92ed7 SW |
187 | unlock_buffer(bh); |
188 | next = bh->b_this_page; | |
189 | size -= bh->b_size; | |
190 | brelse(bh); | |
191 | bh = next; | |
192 | } while(bh && size); | |
16615be1 SW |
193 | } |
194 | ||
47ac5537 | 195 | /** |
e8c92ed7 SW |
196 | * gfs2_end_log_write - end of i/o to the log |
197 | * @bio: The bio | |
e8c92ed7 SW |
198 | * |
199 | * Each bio_vec contains either data from the pagecache or data | |
200 | * relating to the log itself. Here we iterate over the bio_vec | |
201 | * array, processing both kinds of data. | |
47ac5537 SW |
202 | * |
203 | */ | |
204 | ||
4246a0b6 | 205 | static void gfs2_end_log_write(struct bio *bio) |
47ac5537 | 206 | { |
e8c92ed7 SW |
207 | struct gfs2_sbd *sdp = bio->bi_private; |
208 | struct bio_vec *bvec; | |
209 | struct page *page; | |
210 | int i; | |
211 | ||
942b0cdd BP |
212 | if (bio->bi_status) { |
213 | fs_err(sdp, "Error %d writing to journal, jid=%u\n", | |
214 | bio->bi_status, sdp->sd_jdesc->jd_jid); | |
215 | wake_up(&sdp->sd_logd_waitq); | |
216 | } | |
e8c92ed7 | 217 | |
e97e548b | 218 | bio_for_each_segment_all(bvec, bio, i) { |
e8c92ed7 SW |
219 | page = bvec->bv_page; |
220 | if (page_has_buffers(page)) | |
4e4cbee9 | 221 | gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); |
e8c92ed7 SW |
222 | else |
223 | mempool_free(page, gfs2_page_pool); | |
224 | } | |
47ac5537 | 225 | |
e8c92ed7 | 226 | bio_put(bio); |
47ac5537 SW |
227 | if (atomic_dec_and_test(&sdp->sd_log_in_flight)) |
228 | wake_up(&sdp->sd_log_flush_wait); | |
229 | } | |
230 | ||
231 | /** | |
5b846095 AD |
232 | * gfs2_log_submit_bio - Submit any pending log bio |
233 | * @biop: Address of the bio pointer | |
2a5f14f2 | 234 | * @opf: REQ_OP | op_flags |
47ac5537 | 235 | * |
e8c92ed7 SW |
236 | * Submit any pending part-built or full bio to the block device. If |
237 | * there is no pending bio, then this is a no-op. | |
47ac5537 SW |
238 | */ |
239 | ||
2a5f14f2 | 240 | void gfs2_log_submit_bio(struct bio **biop, int opf) |
47ac5537 | 241 | { |
5b846095 AD |
242 | struct bio *bio = *biop; |
243 | if (bio) { | |
244 | struct gfs2_sbd *sdp = bio->bi_private; | |
e8c92ed7 | 245 | atomic_inc(&sdp->sd_log_in_flight); |
2a5f14f2 | 246 | bio->bi_opf = opf; |
5b846095 AD |
247 | submit_bio(bio); |
248 | *biop = NULL; | |
e8c92ed7 SW |
249 | } |
250 | } | |
47ac5537 | 251 | |
e8c92ed7 | 252 | /** |
5b846095 AD |
253 | * gfs2_log_alloc_bio - Allocate a bio |
254 | * @sdp: The super block | |
255 | * @blkno: The device block number we want to write to | |
256 | * @end_io: The bi_end_io callback | |
e8c92ed7 | 257 | * |
5b846095 | 258 | * Allocate a new bio, initialize it with the given parameters and return it. |
e8c92ed7 | 259 | * |
5b846095 | 260 | * Returns: The newly allocated bio |
e8c92ed7 SW |
261 | */ |
262 | ||
5b846095 AD |
263 | static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, |
264 | bio_end_io_t *end_io) | |
e8c92ed7 SW |
265 | { |
266 | struct super_block *sb = sdp->sd_vfs; | |
5b846095 | 267 | struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); |
e8c92ed7 | 268 | |
4f024f37 | 269 | bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); |
74d46992 | 270 | bio_set_dev(bio, sb->s_bdev); |
5b846095 | 271 | bio->bi_end_io = end_io; |
e8c92ed7 SW |
272 | bio->bi_private = sdp; |
273 | ||
e8c92ed7 | 274 | return bio; |
47ac5537 SW |
275 | } |
276 | ||
277 | /** | |
e8c92ed7 | 278 | * gfs2_log_get_bio - Get cached log bio, or allocate a new one |
5b846095 | 279 | * @sdp: The super block |
e8c92ed7 | 280 | * @blkno: The device block number we want to write to |
5b846095 AD |
281 | * @bio: The bio to get or allocate |
282 | * @op: REQ_OP | |
283 | * @end_io: The bi_end_io callback | |
284 | * @flush: Always flush the current bio and allocate a new one? | |
e8c92ed7 SW |
285 | * |
286 | * If there is a cached bio, then if the next block number is sequential | |
287 | * with the previous one, return it, otherwise flush the bio to the | |
5b846095 | 288 | * device. If there is no cached bio, or we just flushed it, then |
e8c92ed7 | 289 | * allocate a new one. |
47ac5537 | 290 | * |
e8c92ed7 | 291 | * Returns: The bio to use for log writes |
47ac5537 SW |
292 | */ |
293 | ||
5b846095 AD |
294 | static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, |
295 | struct bio **biop, int op, | |
296 | bio_end_io_t *end_io, bool flush) | |
47ac5537 | 297 | { |
5b846095 | 298 | struct bio *bio = *biop; |
e8c92ed7 SW |
299 | |
300 | if (bio) { | |
5b846095 AD |
301 | u64 nblk; |
302 | ||
f73a1c7d | 303 | nblk = bio_end_sector(bio); |
e8c92ed7 | 304 | nblk >>= sdp->sd_fsb2bb_shift; |
5b846095 | 305 | if (blkno == nblk && !flush) |
e8c92ed7 | 306 | return bio; |
2a5f14f2 | 307 | gfs2_log_submit_bio(biop, op); |
e8c92ed7 SW |
308 | } |
309 | ||
5b846095 AD |
310 | *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); |
311 | return *biop; | |
47ac5537 SW |
312 | } |
313 | ||
314 | /** | |
e8c92ed7 | 315 | * gfs2_log_write - write to log |
47ac5537 | 316 | * @sdp: the filesystem |
e8c92ed7 SW |
317 | * @page: the page to write |
318 | * @size: the size of the data to write | |
319 | * @offset: the offset within the page | |
c1696fb8 | 320 | * @blkno: block number of the log entry |
47ac5537 | 321 | * |
e8c92ed7 SW |
322 | * Try and add the page segment to the current bio. If that fails, |
323 | * submit the current bio to the device and create a new one, and | |
324 | * then add the page segment to that. | |
47ac5537 SW |
325 | */ |
326 | ||
c1696fb8 BP |
327 | void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, |
328 | unsigned size, unsigned offset, u64 blkno) | |
47ac5537 | 329 | { |
e8c92ed7 SW |
330 | struct bio *bio; |
331 | int ret; | |
332 | ||
5b846095 AD |
333 | bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, |
334 | gfs2_end_log_write, false); | |
e8c92ed7 SW |
335 | ret = bio_add_page(bio, page, size, offset); |
336 | if (ret == 0) { | |
5b846095 AD |
337 | bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, |
338 | REQ_OP_WRITE, gfs2_end_log_write, true); | |
e8c92ed7 SW |
339 | ret = bio_add_page(bio, page, size, offset); |
340 | WARN_ON(ret == 0); | |
341 | } | |
342 | } | |
47ac5537 | 343 | |
e8c92ed7 SW |
344 | /** |
345 | * gfs2_log_write_bh - write a buffer's content to the log | |
346 | * @sdp: The super block | |
347 | * @bh: The buffer pointing to the in-place location | |
348 | * | |
349 | * This writes the content of the buffer to the next available location | |
350 | * in the log. The buffer will be unlocked once the i/o to the log has | |
351 | * completed. | |
352 | */ | |
353 | ||
354 | static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) | |
355 | { | |
c1696fb8 BP |
356 | gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), |
357 | gfs2_log_bmap(sdp)); | |
e8c92ed7 | 358 | } |
47ac5537 | 359 | |
e8c92ed7 SW |
360 | /** |
361 | * gfs2_log_write_page - write one block stored in a page, into the log | |
362 | * @sdp: The superblock | |
363 | * @page: The struct page | |
364 | * | |
365 | * This writes the first block-sized part of the page into the log. Note | |
366 | * that the page must have been allocated from the gfs2_page_pool mempool | |
367 | * and that after this has been called, ownership has been transferred and | |
368 | * the page may be freed at any time. | |
369 | */ | |
47ac5537 | 370 | |
e8c92ed7 SW |
371 | void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) |
372 | { | |
373 | struct super_block *sb = sdp->sd_vfs; | |
c1696fb8 BP |
374 | gfs2_log_write(sdp, page, sb->s_blocksize, 0, |
375 | gfs2_log_bmap(sdp)); | |
47ac5537 | 376 | } |
16615be1 | 377 | |
2a5f14f2 AD |
378 | /** |
379 | * gfs2_end_log_read - end I/O callback for reads from the log | |
380 | * @bio: The bio | |
381 | * | |
382 | * Simply unlock the pages in the bio. The main thread will wait on them and | |
383 | * process them in order as necessary. | |
384 | */ | |
385 | ||
386 | static void gfs2_end_log_read(struct bio *bio) | |
387 | { | |
388 | struct page *page; | |
389 | struct bio_vec *bvec; | |
390 | int i; | |
391 | ||
392 | bio_for_each_segment_all(bvec, bio, i) { | |
393 | page = bvec->bv_page; | |
394 | if (bio->bi_status) { | |
395 | int err = blk_status_to_errno(bio->bi_status); | |
396 | ||
397 | SetPageError(page); | |
398 | mapping_set_error(page->mapping, err); | |
399 | } | |
400 | unlock_page(page); | |
401 | } | |
402 | ||
403 | bio_put(bio); | |
404 | } | |
405 | ||
406 | /** | |
407 | * gfs2_jhead_pg_srch - Look for the journal head in a given page. | |
408 | * @jd: The journal descriptor | |
409 | * @page: The page to look in | |
410 | * | |
411 | * Returns: 1 if found, 0 otherwise. | |
412 | */ | |
413 | ||
414 | static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, | |
415 | struct gfs2_log_header_host *head, | |
416 | struct page *page) | |
417 | { | |
418 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
419 | struct gfs2_log_header_host uninitialized_var(lh); | |
420 | void *kaddr = kmap_atomic(page); | |
421 | unsigned int offset; | |
422 | bool ret = false; | |
423 | ||
424 | for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { | |
425 | if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { | |
426 | if (lh.lh_sequence > head->lh_sequence) | |
427 | *head = lh; | |
428 | else { | |
429 | ret = true; | |
430 | break; | |
431 | } | |
432 | } | |
433 | } | |
434 | kunmap_atomic(kaddr); | |
435 | return ret; | |
436 | } | |
437 | ||
438 | /** | |
439 | * gfs2_jhead_process_page - Search/cleanup a page | |
440 | * @jd: The journal descriptor | |
441 | * @index: Index of the page to look into | |
442 | * @done: If set, perform only cleanup, else search and set if found. | |
443 | * | |
444 | * Find the page with 'index' in the journal's mapping. Search the page for | |
445 | * the journal head if requested (cleanup == false). Release refs on the | |
446 | * page so the page cache can reclaim it (put_page() twice). We grabbed a | |
447 | * reference on this page two times, first when we did a find_or_create_page() | |
448 | * to obtain the page to add it to the bio and second when we do a | |
449 | * find_get_page() here to get the page to wait on while I/O on it is being | |
450 | * completed. | |
451 | * This function is also used to free up a page we might've grabbed but not | |
452 | * used. Maybe we added it to a bio, but not submitted it for I/O. Or we | |
453 | * submitted the I/O, but we already found the jhead so we only need to drop | |
454 | * our references to the page. | |
455 | */ | |
456 | ||
457 | static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, | |
458 | struct gfs2_log_header_host *head, | |
459 | bool *done) | |
460 | { | |
461 | struct page *page; | |
462 | ||
463 | page = find_get_page(jd->jd_inode->i_mapping, index); | |
464 | wait_on_page_locked(page); | |
465 | ||
466 | if (PageError(page)) | |
467 | *done = true; | |
468 | ||
469 | if (!*done) | |
470 | *done = gfs2_jhead_pg_srch(jd, head, page); | |
471 | ||
472 | put_page(page); /* Once for find_get_page */ | |
473 | put_page(page); /* Once more for find_or_create_page */ | |
474 | } | |
475 | ||
476 | /** | |
477 | * gfs2_find_jhead - find the head of a log | |
478 | * @jd: The journal descriptor | |
479 | * @head: The log descriptor for the head of the log is returned here | |
480 | * | |
481 | * Do a search of a journal by reading it in large chunks using bios and find | |
482 | * the valid log entry with the highest sequence number. (i.e. the log head) | |
483 | * | |
484 | * Returns: 0 on success, errno otherwise | |
485 | */ | |
486 | ||
487 | int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head) | |
488 | { | |
489 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
490 | struct address_space *mapping = jd->jd_inode->i_mapping; | |
491 | struct gfs2_journal_extent *je; | |
492 | u32 block, read_idx = 0, submit_idx = 0, index = 0; | |
493 | int shift = PAGE_SHIFT - sdp->sd_sb.sb_bsize_shift; | |
494 | int blocks_per_page = 1 << shift, sz, ret = 0; | |
495 | struct bio *bio = NULL; | |
496 | struct page *page; | |
497 | bool done = false; | |
498 | errseq_t since; | |
499 | ||
500 | memset(head, 0, sizeof(*head)); | |
501 | if (list_empty(&jd->extent_list)) | |
502 | gfs2_map_journal_extents(sdp, jd); | |
503 | ||
504 | since = filemap_sample_wb_err(mapping); | |
505 | list_for_each_entry(je, &jd->extent_list, list) { | |
506 | for (block = 0; block < je->blocks; block += blocks_per_page) { | |
507 | index = (je->lblock + block) >> shift; | |
508 | ||
509 | page = find_or_create_page(mapping, index, GFP_NOFS); | |
510 | if (!page) { | |
511 | ret = -ENOMEM; | |
512 | done = true; | |
513 | goto out; | |
514 | } | |
515 | ||
516 | if (bio) { | |
517 | sz = bio_add_page(bio, page, PAGE_SIZE, 0); | |
518 | if (sz == PAGE_SIZE) | |
519 | goto page_added; | |
520 | submit_idx = index; | |
521 | submit_bio(bio); | |
522 | bio = NULL; | |
523 | } | |
524 | ||
525 | bio = gfs2_log_alloc_bio(sdp, | |
526 | je->dblock + (index << shift), | |
527 | gfs2_end_log_read); | |
528 | bio->bi_opf = REQ_OP_READ; | |
529 | sz = bio_add_page(bio, page, PAGE_SIZE, 0); | |
530 | gfs2_assert_warn(sdp, sz == PAGE_SIZE); | |
531 | ||
532 | page_added: | |
533 | if (submit_idx <= read_idx + BIO_MAX_PAGES) { | |
534 | /* Keep at least one bio in flight */ | |
535 | continue; | |
536 | } | |
537 | ||
538 | gfs2_jhead_process_page(jd, read_idx++, head, &done); | |
539 | if (done) | |
540 | goto out; /* found */ | |
541 | } | |
542 | } | |
543 | ||
544 | out: | |
545 | if (bio) | |
546 | submit_bio(bio); | |
547 | while (read_idx <= index) | |
548 | gfs2_jhead_process_page(jd, read_idx++, head, &done); | |
549 | ||
550 | if (!ret) | |
551 | ret = filemap_check_wb_err(mapping, since); | |
552 | ||
553 | return ret; | |
554 | } | |
555 | ||
dad30e90 SW |
556 | static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, |
557 | u32 ld_length, u32 ld_data1) | |
16615be1 | 558 | { |
144a4c2f | 559 | struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); |
e8c92ed7 SW |
560 | struct gfs2_log_descriptor *ld = page_address(page); |
561 | clear_page(ld); | |
16615be1 SW |
562 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
563 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); | |
564 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); | |
565 | ld->ld_type = cpu_to_be32(ld_type); | |
dad30e90 SW |
566 | ld->ld_length = cpu_to_be32(ld_length); |
567 | ld->ld_data1 = cpu_to_be32(ld_data1); | |
16615be1 | 568 | ld->ld_data2 = 0; |
e8c92ed7 | 569 | return page; |
16615be1 SW |
570 | } |
571 | ||
dad30e90 SW |
572 | static void gfs2_check_magic(struct buffer_head *bh) |
573 | { | |
574 | void *kaddr; | |
575 | __be32 *ptr; | |
576 | ||
577 | clear_buffer_escaped(bh); | |
578 | kaddr = kmap_atomic(bh->b_page); | |
579 | ptr = kaddr + bh_offset(bh); | |
580 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) | |
581 | set_buffer_escaped(bh); | |
582 | kunmap_atomic(kaddr); | |
583 | } | |
584 | ||
7f63257d BM |
585 | static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) |
586 | { | |
587 | struct gfs2_bufdata *bda, *bdb; | |
588 | ||
589 | bda = list_entry(a, struct gfs2_bufdata, bd_list); | |
590 | bdb = list_entry(b, struct gfs2_bufdata, bd_list); | |
591 | ||
592 | if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) | |
593 | return -1; | |
594 | if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) | |
595 | return 1; | |
596 | return 0; | |
597 | } | |
598 | ||
dad30e90 SW |
599 | static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, |
600 | unsigned int total, struct list_head *blist, | |
601 | bool is_databuf) | |
b3b94faa | 602 | { |
b3b94faa DT |
603 | struct gfs2_log_descriptor *ld; |
604 | struct gfs2_bufdata *bd1 = NULL, *bd2; | |
e8c92ed7 | 605 | struct page *page; |
b3b94faa DT |
606 | unsigned int num; |
607 | unsigned n; | |
608 | __be64 *ptr; | |
609 | ||
905d2aef | 610 | gfs2_log_lock(sdp); |
7f63257d | 611 | list_sort(NULL, blist, blocknr_cmp); |
c0752aa7 | 612 | bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); |
b3b94faa DT |
613 | while(total) { |
614 | num = total; | |
615 | if (total > limit) | |
616 | num = limit; | |
905d2aef | 617 | gfs2_log_unlock(sdp); |
4a586812 BP |
618 | page = gfs2_get_log_desc(sdp, |
619 | is_databuf ? GFS2_LOG_DESC_JDATA : | |
620 | GFS2_LOG_DESC_METADATA, num + 1, num); | |
e8c92ed7 | 621 | ld = page_address(page); |
905d2aef | 622 | gfs2_log_lock(sdp); |
e8c92ed7 | 623 | ptr = (__be64 *)(ld + 1); |
b3b94faa DT |
624 | |
625 | n = 0; | |
c0752aa7 | 626 | list_for_each_entry_continue(bd1, blist, bd_list) { |
b3b94faa | 627 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
dad30e90 SW |
628 | if (is_databuf) { |
629 | gfs2_check_magic(bd1->bd_bh); | |
630 | *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); | |
631 | } | |
b3b94faa DT |
632 | if (++n >= num) |
633 | break; | |
634 | } | |
635 | ||
905d2aef | 636 | gfs2_log_unlock(sdp); |
e8c92ed7 | 637 | gfs2_log_write_page(sdp, page); |
905d2aef | 638 | gfs2_log_lock(sdp); |
b3b94faa DT |
639 | |
640 | n = 0; | |
c0752aa7 | 641 | list_for_each_entry_continue(bd2, blist, bd_list) { |
16615be1 | 642 | get_bh(bd2->bd_bh); |
905d2aef | 643 | gfs2_log_unlock(sdp); |
16615be1 | 644 | lock_buffer(bd2->bd_bh); |
dad30e90 SW |
645 | |
646 | if (buffer_escaped(bd2->bd_bh)) { | |
647 | void *kaddr; | |
648 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
649 | ptr = page_address(page); | |
650 | kaddr = kmap_atomic(bd2->bd_bh->b_page); | |
651 | memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), | |
652 | bd2->bd_bh->b_size); | |
653 | kunmap_atomic(kaddr); | |
654 | *(__be32 *)ptr = 0; | |
655 | clear_buffer_escaped(bd2->bd_bh); | |
656 | unlock_buffer(bd2->bd_bh); | |
657 | brelse(bd2->bd_bh); | |
658 | gfs2_log_write_page(sdp, page); | |
659 | } else { | |
660 | gfs2_log_write_bh(sdp, bd2->bd_bh); | |
661 | } | |
905d2aef | 662 | gfs2_log_lock(sdp); |
b3b94faa DT |
663 | if (++n >= num) |
664 | break; | |
665 | } | |
666 | ||
905d2aef | 667 | BUG_ON(total < num); |
b3b94faa DT |
668 | total -= num; |
669 | } | |
905d2aef | 670 | gfs2_log_unlock(sdp); |
b3b94faa DT |
671 | } |
672 | ||
d69a3c65 | 673 | static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
dad30e90 SW |
674 | { |
675 | unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ | |
022ef4fe | 676 | unsigned int nbuf; |
d69a3c65 SW |
677 | if (tr == NULL) |
678 | return; | |
022ef4fe SW |
679 | nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; |
680 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); | |
dad30e90 SW |
681 | } |
682 | ||
16ca9412 | 683 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 684 | { |
d69a3c65 | 685 | struct list_head *head; |
b3b94faa DT |
686 | struct gfs2_bufdata *bd; |
687 | ||
d69a3c65 | 688 | if (tr == NULL) |
16ca9412 | 689 | return; |
16ca9412 | 690 | |
d69a3c65 | 691 | head = &tr->tr_buf; |
b3b94faa | 692 | while (!list_empty(head)) { |
c0752aa7 BP |
693 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
694 | list_del_init(&bd->bd_list); | |
16ca9412 | 695 | gfs2_unpin(sdp, bd->bd_bh, tr); |
b3b94faa | 696 | } |
b3b94faa DT |
697 | } |
698 | ||
699 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 700 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 701 | { |
b3b94faa DT |
702 | if (pass != 0) |
703 | return; | |
704 | ||
a17d758b BP |
705 | jd->jd_found_blocks = 0; |
706 | jd->jd_replayed_blocks = 0; | |
b3b94faa DT |
707 | } |
708 | ||
709 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
710 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
711 | int pass) | |
712 | { | |
feaa7bba SW |
713 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
714 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
5c676f6d | 715 | struct gfs2_glock *gl = ip->i_gl; |
b3b94faa DT |
716 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
717 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 | 718 | u64 blkno; |
b3b94faa DT |
719 | int error = 0; |
720 | ||
721 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) | |
722 | return 0; | |
723 | ||
e1cb6be9 | 724 | gfs2_replay_incr_blk(jd, &start); |
b3b94faa | 725 | |
e1cb6be9 | 726 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
727 | blkno = be64_to_cpu(*ptr++); |
728 | ||
a17d758b | 729 | jd->jd_found_blocks++; |
b3b94faa | 730 | |
a17d758b | 731 | if (gfs2_revoke_check(jd, blkno, start)) |
b3b94faa DT |
732 | continue; |
733 | ||
734 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
82ffa516 SW |
735 | if (error) |
736 | return error; | |
b3b94faa DT |
737 | |
738 | bh_ip = gfs2_meta_new(gl, blkno); | |
739 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
740 | ||
741 | if (gfs2_meta_check(sdp, bh_ip)) | |
742 | error = -EIO; | |
743 | else | |
744 | mark_buffer_dirty(bh_ip); | |
745 | ||
746 | brelse(bh_log); | |
747 | brelse(bh_ip); | |
748 | ||
749 | if (error) | |
750 | break; | |
751 | ||
a17d758b | 752 | jd->jd_replayed_blocks++; |
b3b94faa DT |
753 | } |
754 | ||
755 | return error; | |
756 | } | |
757 | ||
7c0ef28a SW |
758 | /** |
759 | * gfs2_meta_sync - Sync all buffers associated with a glock | |
760 | * @gl: The glock | |
761 | * | |
762 | */ | |
763 | ||
764 | static void gfs2_meta_sync(struct gfs2_glock *gl) | |
765 | { | |
766 | struct address_space *mapping = gfs2_glock2aspace(gl); | |
15562c43 | 767 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
7c0ef28a SW |
768 | int error; |
769 | ||
70d4ee94 SW |
770 | if (mapping == NULL) |
771 | mapping = &sdp->sd_aspace; | |
772 | ||
7c0ef28a SW |
773 | filemap_fdatawrite(mapping); |
774 | error = filemap_fdatawait(mapping); | |
775 | ||
776 | if (error) | |
15562c43 | 777 | gfs2_io_error(gl->gl_name.ln_sbd); |
7c0ef28a SW |
778 | } |
779 | ||
b3b94faa DT |
780 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
781 | { | |
feaa7bba SW |
782 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
783 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
b3b94faa DT |
784 | |
785 | if (error) { | |
7276b3b0 | 786 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
787 | return; |
788 | } | |
789 | if (pass != 1) | |
790 | return; | |
791 | ||
7276b3b0 | 792 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
793 | |
794 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", | |
a17d758b | 795 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
b3b94faa DT |
796 | } |
797 | ||
d69a3c65 | 798 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 799 | { |
b3b94faa | 800 | struct gfs2_meta_header *mh; |
b3b94faa DT |
801 | unsigned int offset; |
802 | struct list_head *head = &sdp->sd_log_le_revoke; | |
82e86087 | 803 | struct gfs2_bufdata *bd; |
e8c92ed7 | 804 | struct page *page; |
dad30e90 | 805 | unsigned int length; |
b3b94faa | 806 | |
5d054964 | 807 | gfs2_write_revokes(sdp); |
b3b94faa DT |
808 | if (!sdp->sd_log_num_revoke) |
809 | return; | |
810 | ||
dad30e90 SW |
811 | length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); |
812 | page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); | |
b3b94faa DT |
813 | offset = sizeof(struct gfs2_log_descriptor); |
814 | ||
c0752aa7 | 815 | list_for_each_entry(bd, head, bd_list) { |
b3b94faa DT |
816 | sdp->sd_log_num_revoke--; |
817 | ||
cd915493 | 818 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
b3b94faa | 819 | |
e8c92ed7 SW |
820 | gfs2_log_write_page(sdp, page); |
821 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
822 | mh = page_address(page); | |
823 | clear_page(mh); | |
b3b94faa | 824 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
e3167ded SW |
825 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
826 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); | |
b3b94faa DT |
827 | offset = sizeof(struct gfs2_meta_header); |
828 | } | |
829 | ||
e8c92ed7 | 830 | *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); |
cd915493 | 831 | offset += sizeof(u64); |
b3b94faa DT |
832 | } |
833 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); | |
834 | ||
e8c92ed7 | 835 | gfs2_log_write_page(sdp, page); |
b3b94faa DT |
836 | } |
837 | ||
16ca9412 | 838 | static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
f42ab085 SW |
839 | { |
840 | struct list_head *head = &sdp->sd_log_le_revoke; | |
841 | struct gfs2_bufdata *bd; | |
842 | struct gfs2_glock *gl; | |
843 | ||
844 | while (!list_empty(head)) { | |
c0752aa7 BP |
845 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
846 | list_del_init(&bd->bd_list); | |
f42ab085 SW |
847 | gl = bd->bd_gl; |
848 | atomic_dec(&gl->gl_revokes); | |
849 | clear_bit(GLF_LFLUSH, &gl->gl_flags); | |
850 | kmem_cache_free(gfs2_bufdata_cachep, bd); | |
851 | } | |
852 | } | |
853 | ||
b3b94faa | 854 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
55167622 | 855 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 856 | { |
b3b94faa DT |
857 | if (pass != 0) |
858 | return; | |
859 | ||
a17d758b BP |
860 | jd->jd_found_revokes = 0; |
861 | jd->jd_replay_tail = head->lh_tail; | |
b3b94faa DT |
862 | } |
863 | ||
864 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
865 | struct gfs2_log_descriptor *ld, __be64 *ptr, | |
866 | int pass) | |
867 | { | |
feaa7bba | 868 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
869 | unsigned int blks = be32_to_cpu(ld->ld_length); |
870 | unsigned int revokes = be32_to_cpu(ld->ld_data1); | |
871 | struct buffer_head *bh; | |
872 | unsigned int offset; | |
cd915493 | 873 | u64 blkno; |
b3b94faa DT |
874 | int first = 1; |
875 | int error; | |
876 | ||
877 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) | |
878 | return 0; | |
879 | ||
880 | offset = sizeof(struct gfs2_log_descriptor); | |
881 | ||
e1cb6be9 | 882 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
883 | error = gfs2_replay_read_block(jd, start, &bh); |
884 | if (error) | |
885 | return error; | |
886 | ||
887 | if (!first) | |
888 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); | |
889 | ||
cd915493 | 890 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
b3b94faa DT |
891 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
892 | ||
a17d758b | 893 | error = gfs2_revoke_add(jd, blkno, start); |
3ad62e87 BP |
894 | if (error < 0) { |
895 | brelse(bh); | |
b3b94faa | 896 | return error; |
3ad62e87 | 897 | } |
b3b94faa | 898 | else if (error) |
a17d758b | 899 | jd->jd_found_revokes++; |
b3b94faa DT |
900 | |
901 | if (!--revokes) | |
902 | break; | |
cd915493 | 903 | offset += sizeof(u64); |
b3b94faa DT |
904 | } |
905 | ||
906 | brelse(bh); | |
907 | offset = sizeof(struct gfs2_meta_header); | |
908 | first = 0; | |
909 | } | |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
914 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
915 | { | |
feaa7bba | 916 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
917 | |
918 | if (error) { | |
a17d758b | 919 | gfs2_revoke_clean(jd); |
b3b94faa DT |
920 | return; |
921 | } | |
922 | if (pass != 1) | |
923 | return; | |
924 | ||
925 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", | |
a17d758b | 926 | jd->jd_jid, jd->jd_found_revokes); |
b3b94faa | 927 | |
a17d758b | 928 | gfs2_revoke_clean(jd); |
b3b94faa DT |
929 | } |
930 | ||
16615be1 SW |
931 | /** |
932 | * databuf_lo_before_commit - Scan the data buffers, writing as we go | |
933 | * | |
934 | */ | |
935 | ||
d69a3c65 | 936 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
16615be1 | 937 | { |
022ef4fe SW |
938 | unsigned int limit = databuf_limit(sdp); |
939 | unsigned int nbuf; | |
d69a3c65 SW |
940 | if (tr == NULL) |
941 | return; | |
022ef4fe SW |
942 | nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; |
943 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); | |
18ec7d5c SW |
944 | } |
945 | ||
946 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, | |
947 | struct gfs2_log_descriptor *ld, | |
948 | __be64 *ptr, int pass) | |
949 | { | |
feaa7bba | 950 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
5c676f6d | 951 | struct gfs2_glock *gl = ip->i_gl; |
18ec7d5c SW |
952 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
953 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 SW |
954 | u64 blkno; |
955 | u64 esc; | |
18ec7d5c SW |
956 | int error = 0; |
957 | ||
958 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) | |
959 | return 0; | |
960 | ||
e1cb6be9 BP |
961 | gfs2_replay_incr_blk(jd, &start); |
962 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { | |
18ec7d5c SW |
963 | blkno = be64_to_cpu(*ptr++); |
964 | esc = be64_to_cpu(*ptr++); | |
965 | ||
a17d758b | 966 | jd->jd_found_blocks++; |
18ec7d5c | 967 | |
a17d758b | 968 | if (gfs2_revoke_check(jd, blkno, start)) |
18ec7d5c SW |
969 | continue; |
970 | ||
971 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
972 | if (error) | |
973 | return error; | |
974 | ||
975 | bh_ip = gfs2_meta_new(gl, blkno); | |
976 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
977 | ||
978 | /* Unescape */ | |
979 | if (esc) { | |
980 | __be32 *eptr = (__be32 *)bh_ip->b_data; | |
981 | *eptr = cpu_to_be32(GFS2_MAGIC); | |
982 | } | |
983 | mark_buffer_dirty(bh_ip); | |
984 | ||
985 | brelse(bh_log); | |
986 | brelse(bh_ip); | |
18ec7d5c | 987 | |
a17d758b | 988 | jd->jd_replayed_blocks++; |
18ec7d5c SW |
989 | } |
990 | ||
991 | return error; | |
992 | } | |
993 | ||
994 | /* FIXME: sort out accounting for log blocks etc. */ | |
995 | ||
996 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
997 | { | |
feaa7bba SW |
998 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
999 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
18ec7d5c SW |
1000 | |
1001 | if (error) { | |
7276b3b0 | 1002 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
1003 | return; |
1004 | } | |
1005 | if (pass != 1) | |
1006 | return; | |
1007 | ||
1008 | /* data sync? */ | |
7276b3b0 | 1009 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
1010 | |
1011 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", | |
a17d758b | 1012 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
18ec7d5c SW |
1013 | } |
1014 | ||
16ca9412 | 1015 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
18ec7d5c | 1016 | { |
d69a3c65 | 1017 | struct list_head *head; |
18ec7d5c SW |
1018 | struct gfs2_bufdata *bd; |
1019 | ||
d69a3c65 | 1020 | if (tr == NULL) |
16ca9412 | 1021 | return; |
16ca9412 | 1022 | |
d69a3c65 | 1023 | head = &tr->tr_databuf; |
18ec7d5c | 1024 | while (!list_empty(head)) { |
c0752aa7 BP |
1025 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
1026 | list_del_init(&bd->bd_list); | |
16ca9412 | 1027 | gfs2_unpin(sdp, bd->bd_bh, tr); |
18ec7d5c | 1028 | } |
b3b94faa DT |
1029 | } |
1030 | ||
18ec7d5c | 1031 | |
b09e593d | 1032 | const struct gfs2_log_operations gfs2_buf_lops = { |
b3b94faa DT |
1033 | .lo_before_commit = buf_lo_before_commit, |
1034 | .lo_after_commit = buf_lo_after_commit, | |
1035 | .lo_before_scan = buf_lo_before_scan, | |
1036 | .lo_scan_elements = buf_lo_scan_elements, | |
1037 | .lo_after_scan = buf_lo_after_scan, | |
ea67eedb | 1038 | .lo_name = "buf", |
b3b94faa DT |
1039 | }; |
1040 | ||
b09e593d | 1041 | const struct gfs2_log_operations gfs2_revoke_lops = { |
b3b94faa | 1042 | .lo_before_commit = revoke_lo_before_commit, |
f42ab085 | 1043 | .lo_after_commit = revoke_lo_after_commit, |
b3b94faa DT |
1044 | .lo_before_scan = revoke_lo_before_scan, |
1045 | .lo_scan_elements = revoke_lo_scan_elements, | |
1046 | .lo_after_scan = revoke_lo_after_scan, | |
ea67eedb | 1047 | .lo_name = "revoke", |
b3b94faa DT |
1048 | }; |
1049 | ||
b09e593d | 1050 | const struct gfs2_log_operations gfs2_databuf_lops = { |
b3b94faa | 1051 | .lo_before_commit = databuf_lo_before_commit, |
18ec7d5c SW |
1052 | .lo_after_commit = databuf_lo_after_commit, |
1053 | .lo_scan_elements = databuf_lo_scan_elements, | |
1054 | .lo_after_scan = databuf_lo_after_scan, | |
ea67eedb | 1055 | .lo_name = "databuf", |
b3b94faa DT |
1056 | }; |
1057 | ||
b09e593d | 1058 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
16615be1 | 1059 | &gfs2_databuf_lops, |
b3b94faa | 1060 | &gfs2_buf_lops, |
16615be1 | 1061 | &gfs2_revoke_lops, |
ea67eedb | 1062 | NULL, |
b3b94faa DT |
1063 | }; |
1064 |