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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
7 | #include <linux/sched.h> | |
8 | #include <linux/slab.h> | |
9 | #include <linux/spinlock.h> | |
10 | #include <linux/completion.h> | |
11 | #include <linux/buffer_head.h> | |
75ca61c1 | 12 | #include <linux/mempool.h> |
5c676f6d | 13 | #include <linux/gfs2_ondisk.h> |
c969f58c SW |
14 | #include <linux/bio.h> |
15 | #include <linux/fs.h> | |
7f63257d | 16 | #include <linux/list_sort.h> |
f4686c26 | 17 | #include <linux/blkdev.h> |
b3b94faa | 18 | |
f4686c26 | 19 | #include "bmap.h" |
c1696fb8 | 20 | #include "dir.h" |
b3b94faa | 21 | #include "gfs2.h" |
5c676f6d | 22 | #include "incore.h" |
2332c443 | 23 | #include "inode.h" |
b3b94faa DT |
24 | #include "glock.h" |
25 | #include "log.h" | |
26 | #include "lops.h" | |
27 | #include "meta_io.h" | |
28 | #include "recovery.h" | |
29 | #include "rgrp.h" | |
30 | #include "trans.h" | |
5c676f6d | 31 | #include "util.h" |
63997775 | 32 | #include "trace_gfs2.h" |
b3b94faa | 33 | |
9b9107a5 SW |
34 | /** |
35 | * gfs2_pin - Pin a buffer in memory | |
36 | * @sdp: The superblock | |
37 | * @bh: The buffer to be pinned | |
38 | * | |
39 | * The log lock must be held when calling this function | |
40 | */ | |
767f433f | 41 | void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) |
9b9107a5 SW |
42 | { |
43 | struct gfs2_bufdata *bd; | |
44 | ||
29687a2a | 45 | BUG_ON(!current->journal_info); |
9b9107a5 SW |
46 | |
47 | clear_buffer_dirty(bh); | |
48 | if (test_set_buffer_pinned(bh)) | |
49 | gfs2_assert_withdraw(sdp, 0); | |
50 | if (!buffer_uptodate(bh)) | |
9e1a9ecd | 51 | gfs2_io_error_bh_wd(sdp, bh); |
9b9107a5 SW |
52 | bd = bh->b_private; |
53 | /* If this buffer is in the AIL and it has already been written | |
54 | * to in-place disk block, remove it from the AIL. | |
55 | */ | |
c618e87a | 56 | spin_lock(&sdp->sd_ail_lock); |
16ca9412 BM |
57 | if (bd->bd_tr) |
58 | list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); | |
c618e87a | 59 | spin_unlock(&sdp->sd_ail_lock); |
9b9107a5 | 60 | get_bh(bh); |
5e687eac | 61 | atomic_inc(&sdp->sd_log_pinned); |
63997775 | 62 | trace_gfs2_pin(bd, 1); |
9b9107a5 SW |
63 | } |
64 | ||
7c9ca621 BP |
65 | static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) |
66 | { | |
67 | return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; | |
68 | } | |
69 | ||
70 | static void maybe_release_space(struct gfs2_bufdata *bd) | |
71 | { | |
72 | struct gfs2_glock *gl = bd->bd_gl; | |
15562c43 | 73 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
6f6597ba | 74 | struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); |
7c9ca621 BP |
75 | unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; |
76 | struct gfs2_bitmap *bi = rgd->rd_bits + index; | |
77 | ||
5a7c6690 | 78 | if (bi->bi_clone == NULL) |
7c9ca621 BP |
79 | return; |
80 | if (sdp->sd_args.ar_discard) | |
66fc061b | 81 | gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); |
7c9ca621 | 82 | memcpy(bi->bi_clone + bi->bi_offset, |
281b4952 | 83 | bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); |
7c9ca621 BP |
84 | clear_bit(GBF_FULL, &bi->bi_flags); |
85 | rgd->rd_free_clone = rgd->rd_free; | |
5ea5050c | 86 | rgd->rd_extfail_pt = rgd->rd_free; |
7c9ca621 BP |
87 | } |
88 | ||
9b9107a5 SW |
89 | /** |
90 | * gfs2_unpin - Unpin a buffer | |
91 | * @sdp: the filesystem the buffer belongs to | |
92 | * @bh: The buffer to unpin | |
93 | * @ai: | |
29687a2a | 94 | * @flags: The inode dirty flags |
9b9107a5 SW |
95 | * |
96 | */ | |
97 | ||
98 | static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
16ca9412 | 99 | struct gfs2_trans *tr) |
9b9107a5 SW |
100 | { |
101 | struct gfs2_bufdata *bd = bh->b_private; | |
102 | ||
29687a2a SW |
103 | BUG_ON(!buffer_uptodate(bh)); |
104 | BUG_ON(!buffer_pinned(bh)); | |
9b9107a5 SW |
105 | |
106 | lock_buffer(bh); | |
107 | mark_buffer_dirty(bh); | |
108 | clear_buffer_pinned(bh); | |
109 | ||
7c9ca621 BP |
110 | if (buffer_is_rgrp(bd)) |
111 | maybe_release_space(bd); | |
112 | ||
d6a079e8 | 113 | spin_lock(&sdp->sd_ail_lock); |
16ca9412 | 114 | if (bd->bd_tr) { |
9b9107a5 SW |
115 | list_del(&bd->bd_ail_st_list); |
116 | brelse(bh); | |
117 | } else { | |
118 | struct gfs2_glock *gl = bd->bd_gl; | |
119 | list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); | |
120 | atomic_inc(&gl->gl_ail_count); | |
121 | } | |
16ca9412 BM |
122 | bd->bd_tr = tr; |
123 | list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); | |
d6a079e8 DC |
124 | spin_unlock(&sdp->sd_ail_lock); |
125 | ||
29687a2a | 126 | clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
63997775 | 127 | trace_gfs2_pin(bd, 0); |
9b9107a5 | 128 | unlock_buffer(bh); |
5e687eac | 129 | atomic_dec(&sdp->sd_log_pinned); |
9b9107a5 SW |
130 | } |
131 | ||
19ebc050 | 132 | void gfs2_log_incr_head(struct gfs2_sbd *sdp) |
16615be1 | 133 | { |
e8c92ed7 SW |
134 | BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && |
135 | (sdp->sd_log_flush_head != sdp->sd_log_head)); | |
136 | ||
722f6f62 | 137 | if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) |
e8c92ed7 | 138 | sdp->sd_log_flush_head = 0; |
16615be1 SW |
139 | } |
140 | ||
19ebc050 | 141 | u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) |
16615be1 | 142 | { |
e8c92ed7 | 143 | struct gfs2_journal_extent *je; |
e8c92ed7 | 144 | |
19ebc050 AG |
145 | list_for_each_entry(je, &jd->extent_list, list) { |
146 | if (lblock >= je->lblock && lblock < je->lblock + je->blocks) | |
147 | return je->dblock + lblock - je->lblock; | |
e8c92ed7 SW |
148 | } |
149 | ||
150 | return -1; | |
16615be1 SW |
151 | } |
152 | ||
e8c92ed7 SW |
153 | /** |
154 | * gfs2_end_log_write_bh - end log write of pagecache data with buffers | |
155 | * @sdp: The superblock | |
156 | * @bvec: The bio_vec | |
157 | * @error: The i/o status | |
158 | * | |
4519eaad | 159 | * This finds the relevant buffers and unlocks them and sets the |
e8c92ed7 SW |
160 | * error flag according to the status of the i/o request. This is |
161 | * used when the log is writing data which has an in-place version | |
162 | * that is pinned in the pagecache. | |
163 | */ | |
164 | ||
6dc4f100 ML |
165 | static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, |
166 | struct bio_vec *bvec, | |
4e4cbee9 | 167 | blk_status_t error) |
16615be1 | 168 | { |
e8c92ed7 SW |
169 | struct buffer_head *bh, *next; |
170 | struct page *page = bvec->bv_page; | |
171 | unsigned size; | |
172 | ||
173 | bh = page_buffers(page); | |
174 | size = bvec->bv_len; | |
175 | while (bh_offset(bh) < bvec->bv_offset) | |
176 | bh = bh->b_this_page; | |
177 | do { | |
178 | if (error) | |
87354e5d | 179 | mark_buffer_write_io_error(bh); |
e8c92ed7 SW |
180 | unlock_buffer(bh); |
181 | next = bh->b_this_page; | |
182 | size -= bh->b_size; | |
183 | brelse(bh); | |
184 | bh = next; | |
185 | } while(bh && size); | |
16615be1 SW |
186 | } |
187 | ||
47ac5537 | 188 | /** |
e8c92ed7 SW |
189 | * gfs2_end_log_write - end of i/o to the log |
190 | * @bio: The bio | |
e8c92ed7 SW |
191 | * |
192 | * Each bio_vec contains either data from the pagecache or data | |
193 | * relating to the log itself. Here we iterate over the bio_vec | |
194 | * array, processing both kinds of data. | |
47ac5537 SW |
195 | * |
196 | */ | |
197 | ||
4246a0b6 | 198 | static void gfs2_end_log_write(struct bio *bio) |
47ac5537 | 199 | { |
e8c92ed7 SW |
200 | struct gfs2_sbd *sdp = bio->bi_private; |
201 | struct bio_vec *bvec; | |
202 | struct page *page; | |
6dc4f100 | 203 | struct bvec_iter_all iter_all; |
e8c92ed7 | 204 | |
942b0cdd BP |
205 | if (bio->bi_status) { |
206 | fs_err(sdp, "Error %d writing to journal, jid=%u\n", | |
207 | bio->bi_status, sdp->sd_jdesc->jd_jid); | |
208 | wake_up(&sdp->sd_logd_waitq); | |
209 | } | |
e8c92ed7 | 210 | |
2b070cfe | 211 | bio_for_each_segment_all(bvec, bio, iter_all) { |
e8c92ed7 SW |
212 | page = bvec->bv_page; |
213 | if (page_has_buffers(page)) | |
4e4cbee9 | 214 | gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); |
e8c92ed7 SW |
215 | else |
216 | mempool_free(page, gfs2_page_pool); | |
217 | } | |
47ac5537 | 218 | |
e8c92ed7 | 219 | bio_put(bio); |
47ac5537 SW |
220 | if (atomic_dec_and_test(&sdp->sd_log_in_flight)) |
221 | wake_up(&sdp->sd_log_flush_wait); | |
222 | } | |
223 | ||
224 | /** | |
5b846095 AD |
225 | * gfs2_log_submit_bio - Submit any pending log bio |
226 | * @biop: Address of the bio pointer | |
f4686c26 | 227 | * @opf: REQ_OP | op_flags |
47ac5537 | 228 | * |
e8c92ed7 SW |
229 | * Submit any pending part-built or full bio to the block device. If |
230 | * there is no pending bio, then this is a no-op. | |
47ac5537 SW |
231 | */ |
232 | ||
f4686c26 | 233 | void gfs2_log_submit_bio(struct bio **biop, int opf) |
47ac5537 | 234 | { |
5b846095 AD |
235 | struct bio *bio = *biop; |
236 | if (bio) { | |
237 | struct gfs2_sbd *sdp = bio->bi_private; | |
e8c92ed7 | 238 | atomic_inc(&sdp->sd_log_in_flight); |
f4686c26 | 239 | bio->bi_opf = opf; |
5b846095 AD |
240 | submit_bio(bio); |
241 | *biop = NULL; | |
e8c92ed7 SW |
242 | } |
243 | } | |
47ac5537 | 244 | |
e8c92ed7 | 245 | /** |
5b846095 AD |
246 | * gfs2_log_alloc_bio - Allocate a bio |
247 | * @sdp: The super block | |
248 | * @blkno: The device block number we want to write to | |
249 | * @end_io: The bi_end_io callback | |
e8c92ed7 | 250 | * |
5b846095 | 251 | * Allocate a new bio, initialize it with the given parameters and return it. |
e8c92ed7 | 252 | * |
5b846095 | 253 | * Returns: The newly allocated bio |
e8c92ed7 SW |
254 | */ |
255 | ||
5b846095 AD |
256 | static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, |
257 | bio_end_io_t *end_io) | |
e8c92ed7 SW |
258 | { |
259 | struct super_block *sb = sdp->sd_vfs; | |
5b846095 | 260 | struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); |
e8c92ed7 | 261 | |
eed0f953 | 262 | bio->bi_iter.bi_sector = blkno << (sb->s_blocksize_bits - 9); |
74d46992 | 263 | bio_set_dev(bio, sb->s_bdev); |
5b846095 | 264 | bio->bi_end_io = end_io; |
e8c92ed7 SW |
265 | bio->bi_private = sdp; |
266 | ||
e8c92ed7 | 267 | return bio; |
47ac5537 SW |
268 | } |
269 | ||
270 | /** | |
e8c92ed7 | 271 | * gfs2_log_get_bio - Get cached log bio, or allocate a new one |
5b846095 | 272 | * @sdp: The super block |
e8c92ed7 | 273 | * @blkno: The device block number we want to write to |
5b846095 AD |
274 | * @bio: The bio to get or allocate |
275 | * @op: REQ_OP | |
276 | * @end_io: The bi_end_io callback | |
277 | * @flush: Always flush the current bio and allocate a new one? | |
e8c92ed7 SW |
278 | * |
279 | * If there is a cached bio, then if the next block number is sequential | |
280 | * with the previous one, return it, otherwise flush the bio to the | |
5b846095 | 281 | * device. If there is no cached bio, or we just flushed it, then |
e8c92ed7 | 282 | * allocate a new one. |
47ac5537 | 283 | * |
e8c92ed7 | 284 | * Returns: The bio to use for log writes |
47ac5537 SW |
285 | */ |
286 | ||
5b846095 AD |
287 | static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, |
288 | struct bio **biop, int op, | |
289 | bio_end_io_t *end_io, bool flush) | |
47ac5537 | 290 | { |
5b846095 | 291 | struct bio *bio = *biop; |
e8c92ed7 SW |
292 | |
293 | if (bio) { | |
5b846095 AD |
294 | u64 nblk; |
295 | ||
f73a1c7d | 296 | nblk = bio_end_sector(bio); |
e8c92ed7 | 297 | nblk >>= sdp->sd_fsb2bb_shift; |
5b846095 | 298 | if (blkno == nblk && !flush) |
e8c92ed7 | 299 | return bio; |
f4686c26 | 300 | gfs2_log_submit_bio(biop, op); |
e8c92ed7 SW |
301 | } |
302 | ||
5b846095 AD |
303 | *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); |
304 | return *biop; | |
47ac5537 SW |
305 | } |
306 | ||
307 | /** | |
e8c92ed7 | 308 | * gfs2_log_write - write to log |
47ac5537 | 309 | * @sdp: the filesystem |
e8c92ed7 SW |
310 | * @page: the page to write |
311 | * @size: the size of the data to write | |
312 | * @offset: the offset within the page | |
c1696fb8 | 313 | * @blkno: block number of the log entry |
47ac5537 | 314 | * |
e8c92ed7 SW |
315 | * Try and add the page segment to the current bio. If that fails, |
316 | * submit the current bio to the device and create a new one, and | |
317 | * then add the page segment to that. | |
47ac5537 SW |
318 | */ |
319 | ||
c1696fb8 BP |
320 | void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, |
321 | unsigned size, unsigned offset, u64 blkno) | |
47ac5537 | 322 | { |
e8c92ed7 SW |
323 | struct bio *bio; |
324 | int ret; | |
325 | ||
5b846095 AD |
326 | bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, |
327 | gfs2_end_log_write, false); | |
e8c92ed7 SW |
328 | ret = bio_add_page(bio, page, size, offset); |
329 | if (ret == 0) { | |
5b846095 AD |
330 | bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, |
331 | REQ_OP_WRITE, gfs2_end_log_write, true); | |
e8c92ed7 SW |
332 | ret = bio_add_page(bio, page, size, offset); |
333 | WARN_ON(ret == 0); | |
334 | } | |
335 | } | |
47ac5537 | 336 | |
e8c92ed7 SW |
337 | /** |
338 | * gfs2_log_write_bh - write a buffer's content to the log | |
339 | * @sdp: The super block | |
340 | * @bh: The buffer pointing to the in-place location | |
341 | * | |
342 | * This writes the content of the buffer to the next available location | |
343 | * in the log. The buffer will be unlocked once the i/o to the log has | |
344 | * completed. | |
345 | */ | |
346 | ||
347 | static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) | |
348 | { | |
19ebc050 AG |
349 | u64 dblock; |
350 | ||
351 | dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); | |
352 | gfs2_log_incr_head(sdp); | |
353 | gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), dblock); | |
e8c92ed7 | 354 | } |
47ac5537 | 355 | |
e8c92ed7 SW |
356 | /** |
357 | * gfs2_log_write_page - write one block stored in a page, into the log | |
358 | * @sdp: The superblock | |
359 | * @page: The struct page | |
360 | * | |
361 | * This writes the first block-sized part of the page into the log. Note | |
362 | * that the page must have been allocated from the gfs2_page_pool mempool | |
363 | * and that after this has been called, ownership has been transferred and | |
364 | * the page may be freed at any time. | |
365 | */ | |
47ac5537 | 366 | |
e8c92ed7 SW |
367 | void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) |
368 | { | |
369 | struct super_block *sb = sdp->sd_vfs; | |
19ebc050 AG |
370 | u64 dblock; |
371 | ||
372 | dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); | |
373 | gfs2_log_incr_head(sdp); | |
374 | gfs2_log_write(sdp, page, sb->s_blocksize, 0, dblock); | |
47ac5537 | 375 | } |
16615be1 | 376 | |
f4686c26 AD |
377 | /** |
378 | * gfs2_end_log_read - end I/O callback for reads from the log | |
379 | * @bio: The bio | |
380 | * | |
381 | * Simply unlock the pages in the bio. The main thread will wait on them and | |
382 | * process them in order as necessary. | |
383 | */ | |
384 | ||
385 | static void gfs2_end_log_read(struct bio *bio) | |
386 | { | |
387 | struct page *page; | |
388 | struct bio_vec *bvec; | |
f4686c26 AD |
389 | struct bvec_iter_all iter_all; |
390 | ||
ef75bd71 | 391 | bio_for_each_segment_all(bvec, bio, iter_all) { |
f4686c26 AD |
392 | page = bvec->bv_page; |
393 | if (bio->bi_status) { | |
394 | int err = blk_status_to_errno(bio->bi_status); | |
395 | ||
396 | SetPageError(page); | |
397 | mapping_set_error(page->mapping, err); | |
398 | } | |
399 | unlock_page(page); | |
400 | } | |
401 | ||
402 | bio_put(bio); | |
403 | } | |
404 | ||
405 | /** | |
406 | * gfs2_jhead_pg_srch - Look for the journal head in a given page. | |
407 | * @jd: The journal descriptor | |
408 | * @page: The page to look in | |
409 | * | |
410 | * Returns: 1 if found, 0 otherwise. | |
411 | */ | |
412 | ||
413 | static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, | |
414 | struct gfs2_log_header_host *head, | |
415 | struct page *page) | |
416 | { | |
417 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
418 | struct gfs2_log_header_host uninitialized_var(lh); | |
419 | void *kaddr = kmap_atomic(page); | |
420 | unsigned int offset; | |
421 | bool ret = false; | |
422 | ||
423 | for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { | |
424 | if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { | |
425 | if (lh.lh_sequence > head->lh_sequence) | |
426 | *head = lh; | |
427 | else { | |
428 | ret = true; | |
429 | break; | |
430 | } | |
431 | } | |
432 | } | |
433 | kunmap_atomic(kaddr); | |
434 | return ret; | |
435 | } | |
436 | ||
437 | /** | |
438 | * gfs2_jhead_process_page - Search/cleanup a page | |
439 | * @jd: The journal descriptor | |
440 | * @index: Index of the page to look into | |
441 | * @done: If set, perform only cleanup, else search and set if found. | |
442 | * | |
443 | * Find the page with 'index' in the journal's mapping. Search the page for | |
444 | * the journal head if requested (cleanup == false). Release refs on the | |
445 | * page so the page cache can reclaim it (put_page() twice). We grabbed a | |
446 | * reference on this page two times, first when we did a find_or_create_page() | |
447 | * to obtain the page to add it to the bio and second when we do a | |
448 | * find_get_page() here to get the page to wait on while I/O on it is being | |
449 | * completed. | |
450 | * This function is also used to free up a page we might've grabbed but not | |
451 | * used. Maybe we added it to a bio, but not submitted it for I/O. Or we | |
452 | * submitted the I/O, but we already found the jhead so we only need to drop | |
453 | * our references to the page. | |
454 | */ | |
455 | ||
456 | static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, | |
457 | struct gfs2_log_header_host *head, | |
458 | bool *done) | |
459 | { | |
460 | struct page *page; | |
461 | ||
462 | page = find_get_page(jd->jd_inode->i_mapping, index); | |
463 | wait_on_page_locked(page); | |
464 | ||
465 | if (PageError(page)) | |
466 | *done = true; | |
467 | ||
468 | if (!*done) | |
469 | *done = gfs2_jhead_pg_srch(jd, head, page); | |
470 | ||
471 | put_page(page); /* Once for find_get_page */ | |
472 | put_page(page); /* Once more for find_or_create_page */ | |
473 | } | |
474 | ||
eed0f953 AG |
475 | static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) |
476 | { | |
477 | struct bio *new; | |
478 | ||
479 | new = bio_alloc(GFP_NOIO, nr_iovecs); | |
480 | bio_copy_dev(new, prev); | |
481 | new->bi_iter.bi_sector = bio_end_sector(prev); | |
482 | new->bi_opf = prev->bi_opf; | |
483 | new->bi_write_hint = prev->bi_write_hint; | |
484 | bio_chain(new, prev); | |
485 | submit_bio(prev); | |
486 | return new; | |
487 | } | |
488 | ||
f4686c26 AD |
489 | /** |
490 | * gfs2_find_jhead - find the head of a log | |
491 | * @jd: The journal descriptor | |
492 | * @head: The log descriptor for the head of the log is returned here | |
493 | * | |
494 | * Do a search of a journal by reading it in large chunks using bios and find | |
495 | * the valid log entry with the highest sequence number. (i.e. the log head) | |
496 | * | |
497 | * Returns: 0 on success, errno otherwise | |
498 | */ | |
499 | int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, | |
500 | bool keep_cache) | |
501 | { | |
502 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
503 | struct address_space *mapping = jd->jd_inode->i_mapping; | |
504 | unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; | |
eed0f953 | 505 | unsigned int bsize = sdp->sd_sb.sb_bsize, off; |
f4686c26 AD |
506 | unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; |
507 | unsigned int shift = PAGE_SHIFT - bsize_shift; | |
eed0f953 | 508 | unsigned int readahead_blocks = BIO_MAX_PAGES << shift; |
f4686c26 AD |
509 | struct gfs2_journal_extent *je; |
510 | int sz, ret = 0; | |
511 | struct bio *bio = NULL; | |
512 | struct page *page = NULL; | |
eed0f953 | 513 | bool bio_chained = false, done = false; |
f4686c26 AD |
514 | errseq_t since; |
515 | ||
516 | memset(head, 0, sizeof(*head)); | |
517 | if (list_empty(&jd->extent_list)) | |
518 | gfs2_map_journal_extents(sdp, jd); | |
519 | ||
520 | since = filemap_sample_wb_err(mapping); | |
521 | list_for_each_entry(je, &jd->extent_list, list) { | |
eed0f953 | 522 | u64 dblock = je->dblock; |
f4686c26 | 523 | |
eed0f953 | 524 | for (; block < je->lblock + je->blocks; block++, dblock++) { |
f4686c26 AD |
525 | if (!page) { |
526 | page = find_or_create_page(mapping, | |
527 | block >> shift, GFP_NOFS); | |
528 | if (!page) { | |
529 | ret = -ENOMEM; | |
530 | done = true; | |
531 | goto out; | |
532 | } | |
eed0f953 | 533 | off = 0; |
f4686c26 AD |
534 | } |
535 | ||
eed0f953 AG |
536 | if (!bio || (bio_chained && !off)) { |
537 | /* start new bio */ | |
538 | } else { | |
f4686c26 | 539 | sz = bio_add_page(bio, page, bsize, off); |
eed0f953 AG |
540 | if (sz == bsize) |
541 | goto block_added; | |
542 | if (off) { | |
543 | unsigned int blocks = | |
544 | (PAGE_SIZE - off) >> bsize_shift; | |
545 | ||
546 | bio = gfs2_chain_bio(bio, blocks); | |
547 | bio_chained = true; | |
548 | goto add_block_to_new_bio; | |
f4686c26 | 549 | } |
eed0f953 AG |
550 | } |
551 | ||
552 | if (bio) { | |
f4686c26 AD |
553 | blocks_submitted = block + 1; |
554 | submit_bio(bio); | |
f4686c26 AD |
555 | } |
556 | ||
f4686c26 AD |
557 | bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); |
558 | bio->bi_opf = REQ_OP_READ; | |
eed0f953 AG |
559 | bio_chained = false; |
560 | add_block_to_new_bio: | |
561 | sz = bio_add_page(bio, page, bsize, off); | |
562 | BUG_ON(sz != bsize); | |
563 | block_added: | |
564 | off += bsize; | |
565 | if (off == PAGE_SIZE) | |
f4686c26 | 566 | page = NULL; |
eed0f953 | 567 | if (blocks_submitted < blocks_read + readahead_blocks) { |
f4686c26 AD |
568 | /* Keep at least one bio in flight */ |
569 | continue; | |
570 | } | |
571 | ||
572 | gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); | |
573 | blocks_read += PAGE_SIZE >> bsize_shift; | |
574 | if (done) | |
575 | goto out; /* found */ | |
576 | } | |
577 | } | |
578 | ||
579 | out: | |
580 | if (bio) | |
581 | submit_bio(bio); | |
582 | while (blocks_read < block) { | |
583 | gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); | |
584 | blocks_read += PAGE_SIZE >> bsize_shift; | |
585 | } | |
586 | ||
587 | if (!ret) | |
588 | ret = filemap_check_wb_err(mapping, since); | |
589 | ||
590 | if (!keep_cache) | |
591 | truncate_inode_pages(mapping, 0); | |
592 | ||
593 | return ret; | |
594 | } | |
595 | ||
dad30e90 SW |
596 | static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, |
597 | u32 ld_length, u32 ld_data1) | |
16615be1 | 598 | { |
144a4c2f | 599 | struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); |
e8c92ed7 SW |
600 | struct gfs2_log_descriptor *ld = page_address(page); |
601 | clear_page(ld); | |
16615be1 SW |
602 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
603 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); | |
604 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); | |
605 | ld->ld_type = cpu_to_be32(ld_type); | |
dad30e90 SW |
606 | ld->ld_length = cpu_to_be32(ld_length); |
607 | ld->ld_data1 = cpu_to_be32(ld_data1); | |
16615be1 | 608 | ld->ld_data2 = 0; |
e8c92ed7 | 609 | return page; |
16615be1 SW |
610 | } |
611 | ||
dad30e90 SW |
612 | static void gfs2_check_magic(struct buffer_head *bh) |
613 | { | |
614 | void *kaddr; | |
615 | __be32 *ptr; | |
616 | ||
617 | clear_buffer_escaped(bh); | |
618 | kaddr = kmap_atomic(bh->b_page); | |
619 | ptr = kaddr + bh_offset(bh); | |
620 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) | |
621 | set_buffer_escaped(bh); | |
622 | kunmap_atomic(kaddr); | |
623 | } | |
624 | ||
7f63257d BM |
625 | static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) |
626 | { | |
627 | struct gfs2_bufdata *bda, *bdb; | |
628 | ||
629 | bda = list_entry(a, struct gfs2_bufdata, bd_list); | |
630 | bdb = list_entry(b, struct gfs2_bufdata, bd_list); | |
631 | ||
632 | if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) | |
633 | return -1; | |
634 | if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) | |
635 | return 1; | |
636 | return 0; | |
637 | } | |
638 | ||
dad30e90 SW |
639 | static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, |
640 | unsigned int total, struct list_head *blist, | |
641 | bool is_databuf) | |
b3b94faa | 642 | { |
b3b94faa DT |
643 | struct gfs2_log_descriptor *ld; |
644 | struct gfs2_bufdata *bd1 = NULL, *bd2; | |
e8c92ed7 | 645 | struct page *page; |
b3b94faa DT |
646 | unsigned int num; |
647 | unsigned n; | |
648 | __be64 *ptr; | |
649 | ||
905d2aef | 650 | gfs2_log_lock(sdp); |
7f63257d | 651 | list_sort(NULL, blist, blocknr_cmp); |
c0752aa7 | 652 | bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); |
b3b94faa DT |
653 | while(total) { |
654 | num = total; | |
655 | if (total > limit) | |
656 | num = limit; | |
905d2aef | 657 | gfs2_log_unlock(sdp); |
4a586812 BP |
658 | page = gfs2_get_log_desc(sdp, |
659 | is_databuf ? GFS2_LOG_DESC_JDATA : | |
660 | GFS2_LOG_DESC_METADATA, num + 1, num); | |
e8c92ed7 | 661 | ld = page_address(page); |
905d2aef | 662 | gfs2_log_lock(sdp); |
e8c92ed7 | 663 | ptr = (__be64 *)(ld + 1); |
b3b94faa DT |
664 | |
665 | n = 0; | |
c0752aa7 | 666 | list_for_each_entry_continue(bd1, blist, bd_list) { |
b3b94faa | 667 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
dad30e90 SW |
668 | if (is_databuf) { |
669 | gfs2_check_magic(bd1->bd_bh); | |
670 | *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); | |
671 | } | |
b3b94faa DT |
672 | if (++n >= num) |
673 | break; | |
674 | } | |
675 | ||
905d2aef | 676 | gfs2_log_unlock(sdp); |
e8c92ed7 | 677 | gfs2_log_write_page(sdp, page); |
905d2aef | 678 | gfs2_log_lock(sdp); |
b3b94faa DT |
679 | |
680 | n = 0; | |
c0752aa7 | 681 | list_for_each_entry_continue(bd2, blist, bd_list) { |
16615be1 | 682 | get_bh(bd2->bd_bh); |
905d2aef | 683 | gfs2_log_unlock(sdp); |
16615be1 | 684 | lock_buffer(bd2->bd_bh); |
dad30e90 SW |
685 | |
686 | if (buffer_escaped(bd2->bd_bh)) { | |
687 | void *kaddr; | |
688 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
689 | ptr = page_address(page); | |
690 | kaddr = kmap_atomic(bd2->bd_bh->b_page); | |
691 | memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), | |
692 | bd2->bd_bh->b_size); | |
693 | kunmap_atomic(kaddr); | |
694 | *(__be32 *)ptr = 0; | |
695 | clear_buffer_escaped(bd2->bd_bh); | |
696 | unlock_buffer(bd2->bd_bh); | |
697 | brelse(bd2->bd_bh); | |
698 | gfs2_log_write_page(sdp, page); | |
699 | } else { | |
700 | gfs2_log_write_bh(sdp, bd2->bd_bh); | |
701 | } | |
905d2aef | 702 | gfs2_log_lock(sdp); |
b3b94faa DT |
703 | if (++n >= num) |
704 | break; | |
705 | } | |
706 | ||
905d2aef | 707 | BUG_ON(total < num); |
b3b94faa DT |
708 | total -= num; |
709 | } | |
905d2aef | 710 | gfs2_log_unlock(sdp); |
b3b94faa DT |
711 | } |
712 | ||
d69a3c65 | 713 | static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
dad30e90 SW |
714 | { |
715 | unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ | |
022ef4fe | 716 | unsigned int nbuf; |
d69a3c65 SW |
717 | if (tr == NULL) |
718 | return; | |
022ef4fe SW |
719 | nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; |
720 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); | |
dad30e90 SW |
721 | } |
722 | ||
16ca9412 | 723 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 724 | { |
d69a3c65 | 725 | struct list_head *head; |
b3b94faa DT |
726 | struct gfs2_bufdata *bd; |
727 | ||
d69a3c65 | 728 | if (tr == NULL) |
16ca9412 | 729 | return; |
16ca9412 | 730 | |
d69a3c65 | 731 | head = &tr->tr_buf; |
b3b94faa | 732 | while (!list_empty(head)) { |
c0752aa7 BP |
733 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
734 | list_del_init(&bd->bd_list); | |
16ca9412 | 735 | gfs2_unpin(sdp, bd->bd_bh, tr); |
b3b94faa | 736 | } |
b3b94faa DT |
737 | } |
738 | ||
739 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 740 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 741 | { |
b3b94faa DT |
742 | if (pass != 0) |
743 | return; | |
744 | ||
a17d758b BP |
745 | jd->jd_found_blocks = 0; |
746 | jd->jd_replayed_blocks = 0; | |
b3b94faa DT |
747 | } |
748 | ||
7c70b896 | 749 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
b3b94faa DT |
750 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
751 | int pass) | |
752 | { | |
feaa7bba SW |
753 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
754 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
5c676f6d | 755 | struct gfs2_glock *gl = ip->i_gl; |
b3b94faa DT |
756 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
757 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 | 758 | u64 blkno; |
b3b94faa DT |
759 | int error = 0; |
760 | ||
761 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) | |
762 | return 0; | |
763 | ||
e1cb6be9 | 764 | gfs2_replay_incr_blk(jd, &start); |
b3b94faa | 765 | |
e1cb6be9 | 766 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
767 | blkno = be64_to_cpu(*ptr++); |
768 | ||
a17d758b | 769 | jd->jd_found_blocks++; |
b3b94faa | 770 | |
a17d758b | 771 | if (gfs2_revoke_check(jd, blkno, start)) |
b3b94faa DT |
772 | continue; |
773 | ||
774 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
82ffa516 SW |
775 | if (error) |
776 | return error; | |
b3b94faa DT |
777 | |
778 | bh_ip = gfs2_meta_new(gl, blkno); | |
779 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
780 | ||
781 | if (gfs2_meta_check(sdp, bh_ip)) | |
782 | error = -EIO; | |
d14e1ca3 BP |
783 | else { |
784 | struct gfs2_meta_header *mh = | |
785 | (struct gfs2_meta_header *)bh_ip->b_data; | |
786 | ||
787 | if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { | |
788 | struct gfs2_rgrpd *rgd; | |
789 | ||
790 | rgd = gfs2_blk2rgrpd(sdp, blkno, false); | |
791 | if (rgd && rgd->rd_addr == blkno && | |
792 | rgd->rd_bits && rgd->rd_bits->bi_bh) { | |
793 | fs_info(sdp, "Replaying 0x%llx but we " | |
794 | "already have a bh!\n", | |
795 | (unsigned long long)blkno); | |
796 | fs_info(sdp, "busy:%d, pinned:%d\n", | |
797 | buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, | |
798 | buffer_pinned(rgd->rd_bits->bi_bh)); | |
3792ce97 | 799 | gfs2_dump_glock(NULL, rgd->rd_gl, true); |
d14e1ca3 BP |
800 | } |
801 | } | |
b3b94faa | 802 | mark_buffer_dirty(bh_ip); |
d14e1ca3 | 803 | } |
b3b94faa DT |
804 | brelse(bh_log); |
805 | brelse(bh_ip); | |
806 | ||
807 | if (error) | |
808 | break; | |
809 | ||
a17d758b | 810 | jd->jd_replayed_blocks++; |
b3b94faa DT |
811 | } |
812 | ||
813 | return error; | |
814 | } | |
815 | ||
7c0ef28a SW |
816 | /** |
817 | * gfs2_meta_sync - Sync all buffers associated with a glock | |
818 | * @gl: The glock | |
819 | * | |
820 | */ | |
821 | ||
822 | static void gfs2_meta_sync(struct gfs2_glock *gl) | |
823 | { | |
824 | struct address_space *mapping = gfs2_glock2aspace(gl); | |
15562c43 | 825 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
7c0ef28a SW |
826 | int error; |
827 | ||
70d4ee94 SW |
828 | if (mapping == NULL) |
829 | mapping = &sdp->sd_aspace; | |
830 | ||
7c0ef28a SW |
831 | filemap_fdatawrite(mapping); |
832 | error = filemap_fdatawait(mapping); | |
833 | ||
834 | if (error) | |
15562c43 | 835 | gfs2_io_error(gl->gl_name.ln_sbd); |
7c0ef28a SW |
836 | } |
837 | ||
b3b94faa DT |
838 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
839 | { | |
feaa7bba SW |
840 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
841 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
b3b94faa DT |
842 | |
843 | if (error) { | |
7276b3b0 | 844 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
845 | return; |
846 | } | |
847 | if (pass != 1) | |
848 | return; | |
849 | ||
7276b3b0 | 850 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
851 | |
852 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", | |
a17d758b | 853 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
b3b94faa DT |
854 | } |
855 | ||
d69a3c65 | 856 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 857 | { |
b3b94faa | 858 | struct gfs2_meta_header *mh; |
b3b94faa | 859 | unsigned int offset; |
a5b1d3fc | 860 | struct list_head *head = &sdp->sd_log_revokes; |
82e86087 | 861 | struct gfs2_bufdata *bd; |
e8c92ed7 | 862 | struct page *page; |
dad30e90 | 863 | unsigned int length; |
b3b94faa | 864 | |
5d054964 | 865 | gfs2_write_revokes(sdp); |
b3b94faa DT |
866 | if (!sdp->sd_log_num_revoke) |
867 | return; | |
868 | ||
2e9eeaa1 | 869 | length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke); |
dad30e90 | 870 | page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); |
b3b94faa DT |
871 | offset = sizeof(struct gfs2_log_descriptor); |
872 | ||
c0752aa7 | 873 | list_for_each_entry(bd, head, bd_list) { |
b3b94faa DT |
874 | sdp->sd_log_num_revoke--; |
875 | ||
cd915493 | 876 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
b3b94faa | 877 | |
e8c92ed7 SW |
878 | gfs2_log_write_page(sdp, page); |
879 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
880 | mh = page_address(page); | |
881 | clear_page(mh); | |
b3b94faa | 882 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
e3167ded SW |
883 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
884 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); | |
b3b94faa DT |
885 | offset = sizeof(struct gfs2_meta_header); |
886 | } | |
887 | ||
e8c92ed7 | 888 | *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); |
cd915493 | 889 | offset += sizeof(u64); |
b3b94faa DT |
890 | } |
891 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); | |
892 | ||
e8c92ed7 | 893 | gfs2_log_write_page(sdp, page); |
b3b94faa DT |
894 | } |
895 | ||
16ca9412 | 896 | static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
f42ab085 | 897 | { |
a5b1d3fc | 898 | struct list_head *head = &sdp->sd_log_revokes; |
638803d4 BP |
899 | struct gfs2_bufdata *bd; |
900 | struct gfs2_glock *gl; | |
73118ca8 | 901 | |
638803d4 BP |
902 | while (!list_empty(head)) { |
903 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); | |
904 | list_del_init(&bd->bd_list); | |
905 | gl = bd->bd_gl; | |
fe5e7ba1 | 906 | gfs2_glock_remove_revoke(gl); |
f42ab085 SW |
907 | kmem_cache_free(gfs2_bufdata_cachep, bd); |
908 | } | |
909 | } | |
910 | ||
b3b94faa | 911 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
55167622 | 912 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 913 | { |
b3b94faa DT |
914 | if (pass != 0) |
915 | return; | |
916 | ||
a17d758b BP |
917 | jd->jd_found_revokes = 0; |
918 | jd->jd_replay_tail = head->lh_tail; | |
b3b94faa DT |
919 | } |
920 | ||
7c70b896 | 921 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
b3b94faa DT |
922 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
923 | int pass) | |
924 | { | |
feaa7bba | 925 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
926 | unsigned int blks = be32_to_cpu(ld->ld_length); |
927 | unsigned int revokes = be32_to_cpu(ld->ld_data1); | |
928 | struct buffer_head *bh; | |
929 | unsigned int offset; | |
cd915493 | 930 | u64 blkno; |
b3b94faa DT |
931 | int first = 1; |
932 | int error; | |
933 | ||
934 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) | |
935 | return 0; | |
936 | ||
937 | offset = sizeof(struct gfs2_log_descriptor); | |
938 | ||
e1cb6be9 | 939 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
940 | error = gfs2_replay_read_block(jd, start, &bh); |
941 | if (error) | |
942 | return error; | |
943 | ||
944 | if (!first) | |
945 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); | |
946 | ||
cd915493 | 947 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
b3b94faa DT |
948 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
949 | ||
a17d758b | 950 | error = gfs2_revoke_add(jd, blkno, start); |
3ad62e87 BP |
951 | if (error < 0) { |
952 | brelse(bh); | |
b3b94faa | 953 | return error; |
3ad62e87 | 954 | } |
b3b94faa | 955 | else if (error) |
a17d758b | 956 | jd->jd_found_revokes++; |
b3b94faa DT |
957 | |
958 | if (!--revokes) | |
959 | break; | |
cd915493 | 960 | offset += sizeof(u64); |
b3b94faa DT |
961 | } |
962 | ||
963 | brelse(bh); | |
964 | offset = sizeof(struct gfs2_meta_header); | |
965 | first = 0; | |
966 | } | |
967 | ||
968 | return 0; | |
969 | } | |
970 | ||
971 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
972 | { | |
feaa7bba | 973 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
974 | |
975 | if (error) { | |
a17d758b | 976 | gfs2_revoke_clean(jd); |
b3b94faa DT |
977 | return; |
978 | } | |
979 | if (pass != 1) | |
980 | return; | |
981 | ||
982 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", | |
a17d758b | 983 | jd->jd_jid, jd->jd_found_revokes); |
b3b94faa | 984 | |
a17d758b | 985 | gfs2_revoke_clean(jd); |
b3b94faa DT |
986 | } |
987 | ||
16615be1 SW |
988 | /** |
989 | * databuf_lo_before_commit - Scan the data buffers, writing as we go | |
990 | * | |
991 | */ | |
992 | ||
d69a3c65 | 993 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
16615be1 | 994 | { |
022ef4fe SW |
995 | unsigned int limit = databuf_limit(sdp); |
996 | unsigned int nbuf; | |
d69a3c65 SW |
997 | if (tr == NULL) |
998 | return; | |
022ef4fe SW |
999 | nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; |
1000 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); | |
18ec7d5c SW |
1001 | } |
1002 | ||
7c70b896 | 1003 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
18ec7d5c SW |
1004 | struct gfs2_log_descriptor *ld, |
1005 | __be64 *ptr, int pass) | |
1006 | { | |
feaa7bba | 1007 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
5c676f6d | 1008 | struct gfs2_glock *gl = ip->i_gl; |
18ec7d5c SW |
1009 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
1010 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 SW |
1011 | u64 blkno; |
1012 | u64 esc; | |
18ec7d5c SW |
1013 | int error = 0; |
1014 | ||
1015 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) | |
1016 | return 0; | |
1017 | ||
e1cb6be9 BP |
1018 | gfs2_replay_incr_blk(jd, &start); |
1019 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { | |
18ec7d5c SW |
1020 | blkno = be64_to_cpu(*ptr++); |
1021 | esc = be64_to_cpu(*ptr++); | |
1022 | ||
a17d758b | 1023 | jd->jd_found_blocks++; |
18ec7d5c | 1024 | |
a17d758b | 1025 | if (gfs2_revoke_check(jd, blkno, start)) |
18ec7d5c SW |
1026 | continue; |
1027 | ||
1028 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
1029 | if (error) | |
1030 | return error; | |
1031 | ||
1032 | bh_ip = gfs2_meta_new(gl, blkno); | |
1033 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
1034 | ||
1035 | /* Unescape */ | |
1036 | if (esc) { | |
1037 | __be32 *eptr = (__be32 *)bh_ip->b_data; | |
1038 | *eptr = cpu_to_be32(GFS2_MAGIC); | |
1039 | } | |
1040 | mark_buffer_dirty(bh_ip); | |
1041 | ||
1042 | brelse(bh_log); | |
1043 | brelse(bh_ip); | |
18ec7d5c | 1044 | |
a17d758b | 1045 | jd->jd_replayed_blocks++; |
18ec7d5c SW |
1046 | } |
1047 | ||
1048 | return error; | |
1049 | } | |
1050 | ||
1051 | /* FIXME: sort out accounting for log blocks etc. */ | |
1052 | ||
1053 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
1054 | { | |
feaa7bba SW |
1055 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
1056 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
18ec7d5c SW |
1057 | |
1058 | if (error) { | |
7276b3b0 | 1059 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
1060 | return; |
1061 | } | |
1062 | if (pass != 1) | |
1063 | return; | |
1064 | ||
1065 | /* data sync? */ | |
7276b3b0 | 1066 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
1067 | |
1068 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", | |
a17d758b | 1069 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
18ec7d5c SW |
1070 | } |
1071 | ||
16ca9412 | 1072 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
18ec7d5c | 1073 | { |
d69a3c65 | 1074 | struct list_head *head; |
18ec7d5c SW |
1075 | struct gfs2_bufdata *bd; |
1076 | ||
d69a3c65 | 1077 | if (tr == NULL) |
16ca9412 | 1078 | return; |
16ca9412 | 1079 | |
d69a3c65 | 1080 | head = &tr->tr_databuf; |
18ec7d5c | 1081 | while (!list_empty(head)) { |
c0752aa7 BP |
1082 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
1083 | list_del_init(&bd->bd_list); | |
16ca9412 | 1084 | gfs2_unpin(sdp, bd->bd_bh, tr); |
18ec7d5c | 1085 | } |
b3b94faa DT |
1086 | } |
1087 | ||
18ec7d5c | 1088 | |
32ac43f6 | 1089 | static const struct gfs2_log_operations gfs2_buf_lops = { |
b3b94faa DT |
1090 | .lo_before_commit = buf_lo_before_commit, |
1091 | .lo_after_commit = buf_lo_after_commit, | |
1092 | .lo_before_scan = buf_lo_before_scan, | |
1093 | .lo_scan_elements = buf_lo_scan_elements, | |
1094 | .lo_after_scan = buf_lo_after_scan, | |
ea67eedb | 1095 | .lo_name = "buf", |
b3b94faa DT |
1096 | }; |
1097 | ||
32ac43f6 | 1098 | static const struct gfs2_log_operations gfs2_revoke_lops = { |
b3b94faa | 1099 | .lo_before_commit = revoke_lo_before_commit, |
f42ab085 | 1100 | .lo_after_commit = revoke_lo_after_commit, |
b3b94faa DT |
1101 | .lo_before_scan = revoke_lo_before_scan, |
1102 | .lo_scan_elements = revoke_lo_scan_elements, | |
1103 | .lo_after_scan = revoke_lo_after_scan, | |
ea67eedb | 1104 | .lo_name = "revoke", |
b3b94faa DT |
1105 | }; |
1106 | ||
32ac43f6 | 1107 | static const struct gfs2_log_operations gfs2_databuf_lops = { |
b3b94faa | 1108 | .lo_before_commit = databuf_lo_before_commit, |
18ec7d5c SW |
1109 | .lo_after_commit = databuf_lo_after_commit, |
1110 | .lo_scan_elements = databuf_lo_scan_elements, | |
1111 | .lo_after_scan = databuf_lo_after_scan, | |
ea67eedb | 1112 | .lo_name = "databuf", |
b3b94faa DT |
1113 | }; |
1114 | ||
b09e593d | 1115 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
16615be1 | 1116 | &gfs2_databuf_lops, |
b3b94faa | 1117 | &gfs2_buf_lops, |
16615be1 | 1118 | &gfs2_revoke_lops, |
ea67eedb | 1119 | NULL, |
b3b94faa DT |
1120 | }; |
1121 |