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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 | ||
e8c92ed7 | 132 | static 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 | ||
c1696fb8 | 141 | u64 gfs2_log_bmap(struct gfs2_sbd *sdp) |
16615be1 | 142 | { |
e8c92ed7 SW |
143 | unsigned int lbn = sdp->sd_log_flush_head; |
144 | struct gfs2_journal_extent *je; | |
145 | u64 block; | |
146 | ||
b50f227b SW |
147 | list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { |
148 | if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { | |
e8c92ed7 SW |
149 | block = je->dblock + lbn - je->lblock; |
150 | gfs2_log_incr_head(sdp); | |
151 | return block; | |
152 | } | |
153 | } | |
154 | ||
155 | return -1; | |
16615be1 SW |
156 | } |
157 | ||
e8c92ed7 SW |
158 | /** |
159 | * gfs2_end_log_write_bh - end log write of pagecache data with buffers | |
160 | * @sdp: The superblock | |
161 | * @bvec: The bio_vec | |
162 | * @error: The i/o status | |
163 | * | |
4519eaad | 164 | * This finds the relevant buffers and unlocks them and sets the |
e8c92ed7 SW |
165 | * error flag according to the status of the i/o request. This is |
166 | * used when the log is writing data which has an in-place version | |
167 | * that is pinned in the pagecache. | |
168 | */ | |
169 | ||
6dc4f100 ML |
170 | static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, |
171 | struct bio_vec *bvec, | |
4e4cbee9 | 172 | blk_status_t error) |
16615be1 | 173 | { |
e8c92ed7 SW |
174 | struct buffer_head *bh, *next; |
175 | struct page *page = bvec->bv_page; | |
176 | unsigned size; | |
177 | ||
178 | bh = page_buffers(page); | |
179 | size = bvec->bv_len; | |
180 | while (bh_offset(bh) < bvec->bv_offset) | |
181 | bh = bh->b_this_page; | |
182 | do { | |
183 | if (error) | |
87354e5d | 184 | mark_buffer_write_io_error(bh); |
e8c92ed7 SW |
185 | unlock_buffer(bh); |
186 | next = bh->b_this_page; | |
187 | size -= bh->b_size; | |
188 | brelse(bh); | |
189 | bh = next; | |
190 | } while(bh && size); | |
16615be1 SW |
191 | } |
192 | ||
47ac5537 | 193 | /** |
e8c92ed7 SW |
194 | * gfs2_end_log_write - end of i/o to the log |
195 | * @bio: The bio | |
e8c92ed7 SW |
196 | * |
197 | * Each bio_vec contains either data from the pagecache or data | |
198 | * relating to the log itself. Here we iterate over the bio_vec | |
199 | * array, processing both kinds of data. | |
47ac5537 SW |
200 | * |
201 | */ | |
202 | ||
4246a0b6 | 203 | static void gfs2_end_log_write(struct bio *bio) |
47ac5537 | 204 | { |
e8c92ed7 SW |
205 | struct gfs2_sbd *sdp = bio->bi_private; |
206 | struct bio_vec *bvec; | |
207 | struct page *page; | |
6dc4f100 | 208 | struct bvec_iter_all iter_all; |
e8c92ed7 | 209 | |
942b0cdd BP |
210 | if (bio->bi_status) { |
211 | fs_err(sdp, "Error %d writing to journal, jid=%u\n", | |
212 | bio->bi_status, sdp->sd_jdesc->jd_jid); | |
213 | wake_up(&sdp->sd_logd_waitq); | |
214 | } | |
e8c92ed7 | 215 | |
2b070cfe | 216 | bio_for_each_segment_all(bvec, bio, iter_all) { |
e8c92ed7 SW |
217 | page = bvec->bv_page; |
218 | if (page_has_buffers(page)) | |
4e4cbee9 | 219 | gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); |
e8c92ed7 SW |
220 | else |
221 | mempool_free(page, gfs2_page_pool); | |
222 | } | |
47ac5537 | 223 | |
e8c92ed7 | 224 | bio_put(bio); |
47ac5537 SW |
225 | if (atomic_dec_and_test(&sdp->sd_log_in_flight)) |
226 | wake_up(&sdp->sd_log_flush_wait); | |
227 | } | |
228 | ||
229 | /** | |
5b846095 AD |
230 | * gfs2_log_submit_bio - Submit any pending log bio |
231 | * @biop: Address of the bio pointer | |
f4686c26 | 232 | * @opf: REQ_OP | op_flags |
47ac5537 | 233 | * |
e8c92ed7 SW |
234 | * Submit any pending part-built or full bio to the block device. If |
235 | * there is no pending bio, then this is a no-op. | |
47ac5537 SW |
236 | */ |
237 | ||
f4686c26 | 238 | void gfs2_log_submit_bio(struct bio **biop, int opf) |
47ac5537 | 239 | { |
5b846095 AD |
240 | struct bio *bio = *biop; |
241 | if (bio) { | |
242 | struct gfs2_sbd *sdp = bio->bi_private; | |
e8c92ed7 | 243 | atomic_inc(&sdp->sd_log_in_flight); |
f4686c26 | 244 | bio->bi_opf = opf; |
5b846095 AD |
245 | submit_bio(bio); |
246 | *biop = NULL; | |
e8c92ed7 SW |
247 | } |
248 | } | |
47ac5537 | 249 | |
e8c92ed7 | 250 | /** |
5b846095 AD |
251 | * gfs2_log_alloc_bio - Allocate a bio |
252 | * @sdp: The super block | |
253 | * @blkno: The device block number we want to write to | |
254 | * @end_io: The bi_end_io callback | |
e8c92ed7 | 255 | * |
5b846095 | 256 | * Allocate a new bio, initialize it with the given parameters and return it. |
e8c92ed7 | 257 | * |
5b846095 | 258 | * Returns: The newly allocated bio |
e8c92ed7 SW |
259 | */ |
260 | ||
5b846095 AD |
261 | static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, |
262 | bio_end_io_t *end_io) | |
e8c92ed7 SW |
263 | { |
264 | struct super_block *sb = sdp->sd_vfs; | |
5b846095 | 265 | struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); |
e8c92ed7 | 266 | |
4f024f37 | 267 | bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); |
74d46992 | 268 | bio_set_dev(bio, sb->s_bdev); |
5b846095 | 269 | bio->bi_end_io = end_io; |
e8c92ed7 SW |
270 | bio->bi_private = sdp; |
271 | ||
e8c92ed7 | 272 | return bio; |
47ac5537 SW |
273 | } |
274 | ||
275 | /** | |
e8c92ed7 | 276 | * gfs2_log_get_bio - Get cached log bio, or allocate a new one |
5b846095 | 277 | * @sdp: The super block |
e8c92ed7 | 278 | * @blkno: The device block number we want to write to |
5b846095 AD |
279 | * @bio: The bio to get or allocate |
280 | * @op: REQ_OP | |
281 | * @end_io: The bi_end_io callback | |
282 | * @flush: Always flush the current bio and allocate a new one? | |
e8c92ed7 SW |
283 | * |
284 | * If there is a cached bio, then if the next block number is sequential | |
285 | * with the previous one, return it, otherwise flush the bio to the | |
5b846095 | 286 | * device. If there is no cached bio, or we just flushed it, then |
e8c92ed7 | 287 | * allocate a new one. |
47ac5537 | 288 | * |
e8c92ed7 | 289 | * Returns: The bio to use for log writes |
47ac5537 SW |
290 | */ |
291 | ||
5b846095 AD |
292 | static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, |
293 | struct bio **biop, int op, | |
294 | bio_end_io_t *end_io, bool flush) | |
47ac5537 | 295 | { |
5b846095 | 296 | struct bio *bio = *biop; |
e8c92ed7 SW |
297 | |
298 | if (bio) { | |
5b846095 AD |
299 | u64 nblk; |
300 | ||
f73a1c7d | 301 | nblk = bio_end_sector(bio); |
e8c92ed7 | 302 | nblk >>= sdp->sd_fsb2bb_shift; |
5b846095 | 303 | if (blkno == nblk && !flush) |
e8c92ed7 | 304 | return bio; |
f4686c26 | 305 | gfs2_log_submit_bio(biop, op); |
e8c92ed7 SW |
306 | } |
307 | ||
5b846095 AD |
308 | *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); |
309 | return *biop; | |
47ac5537 SW |
310 | } |
311 | ||
312 | /** | |
e8c92ed7 | 313 | * gfs2_log_write - write to log |
47ac5537 | 314 | * @sdp: the filesystem |
e8c92ed7 SW |
315 | * @page: the page to write |
316 | * @size: the size of the data to write | |
317 | * @offset: the offset within the page | |
c1696fb8 | 318 | * @blkno: block number of the log entry |
47ac5537 | 319 | * |
e8c92ed7 SW |
320 | * Try and add the page segment to the current bio. If that fails, |
321 | * submit the current bio to the device and create a new one, and | |
322 | * then add the page segment to that. | |
47ac5537 SW |
323 | */ |
324 | ||
c1696fb8 BP |
325 | void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, |
326 | unsigned size, unsigned offset, u64 blkno) | |
47ac5537 | 327 | { |
e8c92ed7 SW |
328 | struct bio *bio; |
329 | int ret; | |
330 | ||
5b846095 AD |
331 | bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, |
332 | gfs2_end_log_write, false); | |
e8c92ed7 SW |
333 | ret = bio_add_page(bio, page, size, offset); |
334 | if (ret == 0) { | |
5b846095 AD |
335 | bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, |
336 | REQ_OP_WRITE, gfs2_end_log_write, true); | |
e8c92ed7 SW |
337 | ret = bio_add_page(bio, page, size, offset); |
338 | WARN_ON(ret == 0); | |
339 | } | |
340 | } | |
47ac5537 | 341 | |
e8c92ed7 SW |
342 | /** |
343 | * gfs2_log_write_bh - write a buffer's content to the log | |
344 | * @sdp: The super block | |
345 | * @bh: The buffer pointing to the in-place location | |
346 | * | |
347 | * This writes the content of the buffer to the next available location | |
348 | * in the log. The buffer will be unlocked once the i/o to the log has | |
349 | * completed. | |
350 | */ | |
351 | ||
352 | static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) | |
353 | { | |
c1696fb8 BP |
354 | gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), |
355 | gfs2_log_bmap(sdp)); | |
e8c92ed7 | 356 | } |
47ac5537 | 357 | |
e8c92ed7 SW |
358 | /** |
359 | * gfs2_log_write_page - write one block stored in a page, into the log | |
360 | * @sdp: The superblock | |
361 | * @page: The struct page | |
362 | * | |
363 | * This writes the first block-sized part of the page into the log. Note | |
364 | * that the page must have been allocated from the gfs2_page_pool mempool | |
365 | * and that after this has been called, ownership has been transferred and | |
366 | * the page may be freed at any time. | |
367 | */ | |
47ac5537 | 368 | |
e8c92ed7 SW |
369 | void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) |
370 | { | |
371 | struct super_block *sb = sdp->sd_vfs; | |
c1696fb8 BP |
372 | gfs2_log_write(sdp, page, sb->s_blocksize, 0, |
373 | gfs2_log_bmap(sdp)); | |
47ac5537 | 374 | } |
16615be1 | 375 | |
f4686c26 AD |
376 | /** |
377 | * gfs2_end_log_read - end I/O callback for reads from the log | |
378 | * @bio: The bio | |
379 | * | |
380 | * Simply unlock the pages in the bio. The main thread will wait on them and | |
381 | * process them in order as necessary. | |
382 | */ | |
383 | ||
384 | static void gfs2_end_log_read(struct bio *bio) | |
385 | { | |
386 | struct page *page; | |
387 | struct bio_vec *bvec; | |
f4686c26 AD |
388 | struct bvec_iter_all iter_all; |
389 | ||
ef75bd71 | 390 | bio_for_each_segment_all(bvec, bio, iter_all) { |
f4686c26 AD |
391 | page = bvec->bv_page; |
392 | if (bio->bi_status) { | |
393 | int err = blk_status_to_errno(bio->bi_status); | |
394 | ||
395 | SetPageError(page); | |
396 | mapping_set_error(page->mapping, err); | |
397 | } | |
398 | unlock_page(page); | |
399 | } | |
400 | ||
401 | bio_put(bio); | |
402 | } | |
403 | ||
404 | /** | |
405 | * gfs2_jhead_pg_srch - Look for the journal head in a given page. | |
406 | * @jd: The journal descriptor | |
407 | * @page: The page to look in | |
408 | * | |
409 | * Returns: 1 if found, 0 otherwise. | |
410 | */ | |
411 | ||
412 | static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, | |
413 | struct gfs2_log_header_host *head, | |
414 | struct page *page) | |
415 | { | |
416 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
417 | struct gfs2_log_header_host uninitialized_var(lh); | |
418 | void *kaddr = kmap_atomic(page); | |
419 | unsigned int offset; | |
420 | bool ret = false; | |
421 | ||
422 | for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { | |
423 | if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { | |
424 | if (lh.lh_sequence > head->lh_sequence) | |
425 | *head = lh; | |
426 | else { | |
427 | ret = true; | |
428 | break; | |
429 | } | |
430 | } | |
431 | } | |
432 | kunmap_atomic(kaddr); | |
433 | return ret; | |
434 | } | |
435 | ||
436 | /** | |
437 | * gfs2_jhead_process_page - Search/cleanup a page | |
438 | * @jd: The journal descriptor | |
439 | * @index: Index of the page to look into | |
440 | * @done: If set, perform only cleanup, else search and set if found. | |
441 | * | |
442 | * Find the page with 'index' in the journal's mapping. Search the page for | |
443 | * the journal head if requested (cleanup == false). Release refs on the | |
444 | * page so the page cache can reclaim it (put_page() twice). We grabbed a | |
445 | * reference on this page two times, first when we did a find_or_create_page() | |
446 | * to obtain the page to add it to the bio and second when we do a | |
447 | * find_get_page() here to get the page to wait on while I/O on it is being | |
448 | * completed. | |
449 | * This function is also used to free up a page we might've grabbed but not | |
450 | * used. Maybe we added it to a bio, but not submitted it for I/O. Or we | |
451 | * submitted the I/O, but we already found the jhead so we only need to drop | |
452 | * our references to the page. | |
453 | */ | |
454 | ||
455 | static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, | |
456 | struct gfs2_log_header_host *head, | |
457 | bool *done) | |
458 | { | |
459 | struct page *page; | |
460 | ||
461 | page = find_get_page(jd->jd_inode->i_mapping, index); | |
462 | wait_on_page_locked(page); | |
463 | ||
464 | if (PageError(page)) | |
465 | *done = true; | |
466 | ||
467 | if (!*done) | |
468 | *done = gfs2_jhead_pg_srch(jd, head, page); | |
469 | ||
470 | put_page(page); /* Once for find_get_page */ | |
471 | put_page(page); /* Once more for find_or_create_page */ | |
472 | } | |
473 | ||
474 | /** | |
475 | * gfs2_find_jhead - find the head of a log | |
476 | * @jd: The journal descriptor | |
477 | * @head: The log descriptor for the head of the log is returned here | |
478 | * | |
479 | * Do a search of a journal by reading it in large chunks using bios and find | |
480 | * the valid log entry with the highest sequence number. (i.e. the log head) | |
481 | * | |
482 | * Returns: 0 on success, errno otherwise | |
483 | */ | |
484 | int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, | |
485 | bool keep_cache) | |
486 | { | |
487 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
488 | struct address_space *mapping = jd->jd_inode->i_mapping; | |
489 | unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; | |
490 | unsigned int bsize = sdp->sd_sb.sb_bsize; | |
491 | unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; | |
492 | unsigned int shift = PAGE_SHIFT - bsize_shift; | |
493 | unsigned int readhead_blocks = BIO_MAX_PAGES << shift; | |
494 | struct gfs2_journal_extent *je; | |
495 | int sz, ret = 0; | |
496 | struct bio *bio = NULL; | |
497 | struct page *page = NULL; | |
498 | bool done = false; | |
499 | errseq_t since; | |
500 | ||
501 | memset(head, 0, sizeof(*head)); | |
502 | if (list_empty(&jd->extent_list)) | |
503 | gfs2_map_journal_extents(sdp, jd); | |
504 | ||
505 | since = filemap_sample_wb_err(mapping); | |
506 | list_for_each_entry(je, &jd->extent_list, list) { | |
507 | for (; block < je->lblock + je->blocks; block++) { | |
508 | u64 dblock; | |
509 | ||
510 | if (!page) { | |
511 | page = find_or_create_page(mapping, | |
512 | block >> shift, GFP_NOFS); | |
513 | if (!page) { | |
514 | ret = -ENOMEM; | |
515 | done = true; | |
516 | goto out; | |
517 | } | |
518 | } | |
519 | ||
520 | if (bio) { | |
521 | unsigned int off; | |
522 | ||
523 | off = (block << bsize_shift) & ~PAGE_MASK; | |
524 | sz = bio_add_page(bio, page, bsize, off); | |
525 | if (sz == bsize) { /* block added */ | |
526 | if (off + bsize == PAGE_SIZE) { | |
527 | page = NULL; | |
528 | goto page_added; | |
529 | } | |
530 | continue; | |
531 | } | |
532 | blocks_submitted = block + 1; | |
533 | submit_bio(bio); | |
534 | bio = NULL; | |
535 | } | |
536 | ||
537 | dblock = je->dblock + (block - je->lblock); | |
538 | bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); | |
539 | bio->bi_opf = REQ_OP_READ; | |
540 | sz = bio_add_page(bio, page, bsize, 0); | |
541 | gfs2_assert_warn(sdp, sz == bsize); | |
542 | if (bsize == PAGE_SIZE) | |
543 | page = NULL; | |
544 | ||
545 | page_added: | |
546 | if (blocks_submitted < blocks_read + readhead_blocks) { | |
547 | /* Keep at least one bio in flight */ | |
548 | continue; | |
549 | } | |
550 | ||
551 | gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); | |
552 | blocks_read += PAGE_SIZE >> bsize_shift; | |
553 | if (done) | |
554 | goto out; /* found */ | |
555 | } | |
556 | } | |
557 | ||
558 | out: | |
559 | if (bio) | |
560 | submit_bio(bio); | |
561 | while (blocks_read < block) { | |
562 | gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); | |
563 | blocks_read += PAGE_SIZE >> bsize_shift; | |
564 | } | |
565 | ||
566 | if (!ret) | |
567 | ret = filemap_check_wb_err(mapping, since); | |
568 | ||
569 | if (!keep_cache) | |
570 | truncate_inode_pages(mapping, 0); | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
dad30e90 SW |
575 | static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, |
576 | u32 ld_length, u32 ld_data1) | |
16615be1 | 577 | { |
144a4c2f | 578 | struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); |
e8c92ed7 SW |
579 | struct gfs2_log_descriptor *ld = page_address(page); |
580 | clear_page(ld); | |
16615be1 SW |
581 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
582 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); | |
583 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); | |
584 | ld->ld_type = cpu_to_be32(ld_type); | |
dad30e90 SW |
585 | ld->ld_length = cpu_to_be32(ld_length); |
586 | ld->ld_data1 = cpu_to_be32(ld_data1); | |
16615be1 | 587 | ld->ld_data2 = 0; |
e8c92ed7 | 588 | return page; |
16615be1 SW |
589 | } |
590 | ||
dad30e90 SW |
591 | static void gfs2_check_magic(struct buffer_head *bh) |
592 | { | |
593 | void *kaddr; | |
594 | __be32 *ptr; | |
595 | ||
596 | clear_buffer_escaped(bh); | |
597 | kaddr = kmap_atomic(bh->b_page); | |
598 | ptr = kaddr + bh_offset(bh); | |
599 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) | |
600 | set_buffer_escaped(bh); | |
601 | kunmap_atomic(kaddr); | |
602 | } | |
603 | ||
7f63257d BM |
604 | static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) |
605 | { | |
606 | struct gfs2_bufdata *bda, *bdb; | |
607 | ||
608 | bda = list_entry(a, struct gfs2_bufdata, bd_list); | |
609 | bdb = list_entry(b, struct gfs2_bufdata, bd_list); | |
610 | ||
611 | if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) | |
612 | return -1; | |
613 | if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) | |
614 | return 1; | |
615 | return 0; | |
616 | } | |
617 | ||
dad30e90 SW |
618 | static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, |
619 | unsigned int total, struct list_head *blist, | |
620 | bool is_databuf) | |
b3b94faa | 621 | { |
b3b94faa DT |
622 | struct gfs2_log_descriptor *ld; |
623 | struct gfs2_bufdata *bd1 = NULL, *bd2; | |
e8c92ed7 | 624 | struct page *page; |
b3b94faa DT |
625 | unsigned int num; |
626 | unsigned n; | |
627 | __be64 *ptr; | |
628 | ||
905d2aef | 629 | gfs2_log_lock(sdp); |
7f63257d | 630 | list_sort(NULL, blist, blocknr_cmp); |
c0752aa7 | 631 | bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); |
b3b94faa DT |
632 | while(total) { |
633 | num = total; | |
634 | if (total > limit) | |
635 | num = limit; | |
905d2aef | 636 | gfs2_log_unlock(sdp); |
4a586812 BP |
637 | page = gfs2_get_log_desc(sdp, |
638 | is_databuf ? GFS2_LOG_DESC_JDATA : | |
639 | GFS2_LOG_DESC_METADATA, num + 1, num); | |
e8c92ed7 | 640 | ld = page_address(page); |
905d2aef | 641 | gfs2_log_lock(sdp); |
e8c92ed7 | 642 | ptr = (__be64 *)(ld + 1); |
b3b94faa DT |
643 | |
644 | n = 0; | |
c0752aa7 | 645 | list_for_each_entry_continue(bd1, blist, bd_list) { |
b3b94faa | 646 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
dad30e90 SW |
647 | if (is_databuf) { |
648 | gfs2_check_magic(bd1->bd_bh); | |
649 | *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); | |
650 | } | |
b3b94faa DT |
651 | if (++n >= num) |
652 | break; | |
653 | } | |
654 | ||
905d2aef | 655 | gfs2_log_unlock(sdp); |
e8c92ed7 | 656 | gfs2_log_write_page(sdp, page); |
905d2aef | 657 | gfs2_log_lock(sdp); |
b3b94faa DT |
658 | |
659 | n = 0; | |
c0752aa7 | 660 | list_for_each_entry_continue(bd2, blist, bd_list) { |
16615be1 | 661 | get_bh(bd2->bd_bh); |
905d2aef | 662 | gfs2_log_unlock(sdp); |
16615be1 | 663 | lock_buffer(bd2->bd_bh); |
dad30e90 SW |
664 | |
665 | if (buffer_escaped(bd2->bd_bh)) { | |
666 | void *kaddr; | |
667 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
668 | ptr = page_address(page); | |
669 | kaddr = kmap_atomic(bd2->bd_bh->b_page); | |
670 | memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), | |
671 | bd2->bd_bh->b_size); | |
672 | kunmap_atomic(kaddr); | |
673 | *(__be32 *)ptr = 0; | |
674 | clear_buffer_escaped(bd2->bd_bh); | |
675 | unlock_buffer(bd2->bd_bh); | |
676 | brelse(bd2->bd_bh); | |
677 | gfs2_log_write_page(sdp, page); | |
678 | } else { | |
679 | gfs2_log_write_bh(sdp, bd2->bd_bh); | |
680 | } | |
905d2aef | 681 | gfs2_log_lock(sdp); |
b3b94faa DT |
682 | if (++n >= num) |
683 | break; | |
684 | } | |
685 | ||
905d2aef | 686 | BUG_ON(total < num); |
b3b94faa DT |
687 | total -= num; |
688 | } | |
905d2aef | 689 | gfs2_log_unlock(sdp); |
b3b94faa DT |
690 | } |
691 | ||
d69a3c65 | 692 | static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
dad30e90 SW |
693 | { |
694 | unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ | |
022ef4fe | 695 | unsigned int nbuf; |
d69a3c65 SW |
696 | if (tr == NULL) |
697 | return; | |
022ef4fe SW |
698 | nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; |
699 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); | |
dad30e90 SW |
700 | } |
701 | ||
16ca9412 | 702 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 703 | { |
d69a3c65 | 704 | struct list_head *head; |
b3b94faa DT |
705 | struct gfs2_bufdata *bd; |
706 | ||
d69a3c65 | 707 | if (tr == NULL) |
16ca9412 | 708 | return; |
16ca9412 | 709 | |
d69a3c65 | 710 | head = &tr->tr_buf; |
b3b94faa | 711 | while (!list_empty(head)) { |
c0752aa7 BP |
712 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
713 | list_del_init(&bd->bd_list); | |
16ca9412 | 714 | gfs2_unpin(sdp, bd->bd_bh, tr); |
b3b94faa | 715 | } |
b3b94faa DT |
716 | } |
717 | ||
718 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 719 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 720 | { |
b3b94faa DT |
721 | if (pass != 0) |
722 | return; | |
723 | ||
a17d758b BP |
724 | jd->jd_found_blocks = 0; |
725 | jd->jd_replayed_blocks = 0; | |
b3b94faa DT |
726 | } |
727 | ||
7c70b896 | 728 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
b3b94faa DT |
729 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
730 | int pass) | |
731 | { | |
feaa7bba SW |
732 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
733 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
5c676f6d | 734 | struct gfs2_glock *gl = ip->i_gl; |
b3b94faa DT |
735 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
736 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 | 737 | u64 blkno; |
b3b94faa DT |
738 | int error = 0; |
739 | ||
740 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) | |
741 | return 0; | |
742 | ||
e1cb6be9 | 743 | gfs2_replay_incr_blk(jd, &start); |
b3b94faa | 744 | |
e1cb6be9 | 745 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
746 | blkno = be64_to_cpu(*ptr++); |
747 | ||
a17d758b | 748 | jd->jd_found_blocks++; |
b3b94faa | 749 | |
a17d758b | 750 | if (gfs2_revoke_check(jd, blkno, start)) |
b3b94faa DT |
751 | continue; |
752 | ||
753 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
82ffa516 SW |
754 | if (error) |
755 | return error; | |
b3b94faa DT |
756 | |
757 | bh_ip = gfs2_meta_new(gl, blkno); | |
758 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
759 | ||
760 | if (gfs2_meta_check(sdp, bh_ip)) | |
761 | error = -EIO; | |
d14e1ca3 BP |
762 | else { |
763 | struct gfs2_meta_header *mh = | |
764 | (struct gfs2_meta_header *)bh_ip->b_data; | |
765 | ||
766 | if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { | |
767 | struct gfs2_rgrpd *rgd; | |
768 | ||
769 | rgd = gfs2_blk2rgrpd(sdp, blkno, false); | |
770 | if (rgd && rgd->rd_addr == blkno && | |
771 | rgd->rd_bits && rgd->rd_bits->bi_bh) { | |
772 | fs_info(sdp, "Replaying 0x%llx but we " | |
773 | "already have a bh!\n", | |
774 | (unsigned long long)blkno); | |
775 | fs_info(sdp, "busy:%d, pinned:%d\n", | |
776 | buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, | |
777 | buffer_pinned(rgd->rd_bits->bi_bh)); | |
3792ce97 | 778 | gfs2_dump_glock(NULL, rgd->rd_gl, true); |
d14e1ca3 BP |
779 | } |
780 | } | |
b3b94faa | 781 | mark_buffer_dirty(bh_ip); |
d14e1ca3 | 782 | } |
b3b94faa DT |
783 | brelse(bh_log); |
784 | brelse(bh_ip); | |
785 | ||
786 | if (error) | |
787 | break; | |
788 | ||
a17d758b | 789 | jd->jd_replayed_blocks++; |
b3b94faa DT |
790 | } |
791 | ||
792 | return error; | |
793 | } | |
794 | ||
7c0ef28a SW |
795 | /** |
796 | * gfs2_meta_sync - Sync all buffers associated with a glock | |
797 | * @gl: The glock | |
798 | * | |
799 | */ | |
800 | ||
801 | static void gfs2_meta_sync(struct gfs2_glock *gl) | |
802 | { | |
803 | struct address_space *mapping = gfs2_glock2aspace(gl); | |
15562c43 | 804 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
7c0ef28a SW |
805 | int error; |
806 | ||
70d4ee94 SW |
807 | if (mapping == NULL) |
808 | mapping = &sdp->sd_aspace; | |
809 | ||
7c0ef28a SW |
810 | filemap_fdatawrite(mapping); |
811 | error = filemap_fdatawait(mapping); | |
812 | ||
813 | if (error) | |
15562c43 | 814 | gfs2_io_error(gl->gl_name.ln_sbd); |
7c0ef28a SW |
815 | } |
816 | ||
b3b94faa DT |
817 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
818 | { | |
feaa7bba SW |
819 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
820 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
b3b94faa DT |
821 | |
822 | if (error) { | |
7276b3b0 | 823 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
824 | return; |
825 | } | |
826 | if (pass != 1) | |
827 | return; | |
828 | ||
7276b3b0 | 829 | gfs2_meta_sync(ip->i_gl); |
b3b94faa DT |
830 | |
831 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", | |
a17d758b | 832 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
b3b94faa DT |
833 | } |
834 | ||
d69a3c65 | 835 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 836 | { |
b3b94faa | 837 | struct gfs2_meta_header *mh; |
b3b94faa | 838 | unsigned int offset; |
a5b1d3fc | 839 | struct list_head *head = &sdp->sd_log_revokes; |
82e86087 | 840 | struct gfs2_bufdata *bd; |
e8c92ed7 | 841 | struct page *page; |
dad30e90 | 842 | unsigned int length; |
b3b94faa | 843 | |
5d054964 | 844 | gfs2_write_revokes(sdp); |
b3b94faa DT |
845 | if (!sdp->sd_log_num_revoke) |
846 | return; | |
847 | ||
dad30e90 SW |
848 | length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); |
849 | page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); | |
b3b94faa DT |
850 | offset = sizeof(struct gfs2_log_descriptor); |
851 | ||
c0752aa7 | 852 | list_for_each_entry(bd, head, bd_list) { |
b3b94faa DT |
853 | sdp->sd_log_num_revoke--; |
854 | ||
cd915493 | 855 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
b3b94faa | 856 | |
e8c92ed7 SW |
857 | gfs2_log_write_page(sdp, page); |
858 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
859 | mh = page_address(page); | |
860 | clear_page(mh); | |
b3b94faa | 861 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
e3167ded SW |
862 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
863 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); | |
b3b94faa DT |
864 | offset = sizeof(struct gfs2_meta_header); |
865 | } | |
866 | ||
e8c92ed7 | 867 | *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); |
cd915493 | 868 | offset += sizeof(u64); |
b3b94faa DT |
869 | } |
870 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); | |
871 | ||
e8c92ed7 | 872 | gfs2_log_write_page(sdp, page); |
b3b94faa DT |
873 | } |
874 | ||
16ca9412 | 875 | static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
f42ab085 | 876 | { |
a5b1d3fc | 877 | struct list_head *head = &sdp->sd_log_revokes; |
638803d4 BP |
878 | struct gfs2_bufdata *bd; |
879 | struct gfs2_glock *gl; | |
73118ca8 | 880 | |
638803d4 BP |
881 | while (!list_empty(head)) { |
882 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); | |
883 | list_del_init(&bd->bd_list); | |
884 | gl = bd->bd_gl; | |
885 | if (atomic_dec_return(&gl->gl_revokes) == 0) { | |
886 | clear_bit(GLF_LFLUSH, &gl->gl_flags); | |
887 | gfs2_glock_queue_put(gl); | |
9287c645 | 888 | } |
f42ab085 SW |
889 | kmem_cache_free(gfs2_bufdata_cachep, bd); |
890 | } | |
891 | } | |
892 | ||
b3b94faa | 893 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
55167622 | 894 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 895 | { |
b3b94faa DT |
896 | if (pass != 0) |
897 | return; | |
898 | ||
a17d758b BP |
899 | jd->jd_found_revokes = 0; |
900 | jd->jd_replay_tail = head->lh_tail; | |
b3b94faa DT |
901 | } |
902 | ||
7c70b896 | 903 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
b3b94faa DT |
904 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
905 | int pass) | |
906 | { | |
feaa7bba | 907 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
908 | unsigned int blks = be32_to_cpu(ld->ld_length); |
909 | unsigned int revokes = be32_to_cpu(ld->ld_data1); | |
910 | struct buffer_head *bh; | |
911 | unsigned int offset; | |
cd915493 | 912 | u64 blkno; |
b3b94faa DT |
913 | int first = 1; |
914 | int error; | |
915 | ||
916 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) | |
917 | return 0; | |
918 | ||
919 | offset = sizeof(struct gfs2_log_descriptor); | |
920 | ||
e1cb6be9 | 921 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
922 | error = gfs2_replay_read_block(jd, start, &bh); |
923 | if (error) | |
924 | return error; | |
925 | ||
926 | if (!first) | |
927 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); | |
928 | ||
cd915493 | 929 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
b3b94faa DT |
930 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
931 | ||
a17d758b | 932 | error = gfs2_revoke_add(jd, blkno, start); |
3ad62e87 BP |
933 | if (error < 0) { |
934 | brelse(bh); | |
b3b94faa | 935 | return error; |
3ad62e87 | 936 | } |
b3b94faa | 937 | else if (error) |
a17d758b | 938 | jd->jd_found_revokes++; |
b3b94faa DT |
939 | |
940 | if (!--revokes) | |
941 | break; | |
cd915493 | 942 | offset += sizeof(u64); |
b3b94faa DT |
943 | } |
944 | ||
945 | brelse(bh); | |
946 | offset = sizeof(struct gfs2_meta_header); | |
947 | first = 0; | |
948 | } | |
949 | ||
950 | return 0; | |
951 | } | |
952 | ||
953 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
954 | { | |
feaa7bba | 955 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
956 | |
957 | if (error) { | |
a17d758b | 958 | gfs2_revoke_clean(jd); |
b3b94faa DT |
959 | return; |
960 | } | |
961 | if (pass != 1) | |
962 | return; | |
963 | ||
964 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", | |
a17d758b | 965 | jd->jd_jid, jd->jd_found_revokes); |
b3b94faa | 966 | |
a17d758b | 967 | gfs2_revoke_clean(jd); |
b3b94faa DT |
968 | } |
969 | ||
16615be1 SW |
970 | /** |
971 | * databuf_lo_before_commit - Scan the data buffers, writing as we go | |
972 | * | |
973 | */ | |
974 | ||
d69a3c65 | 975 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
16615be1 | 976 | { |
022ef4fe SW |
977 | unsigned int limit = databuf_limit(sdp); |
978 | unsigned int nbuf; | |
d69a3c65 SW |
979 | if (tr == NULL) |
980 | return; | |
022ef4fe SW |
981 | nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; |
982 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); | |
18ec7d5c SW |
983 | } |
984 | ||
7c70b896 | 985 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
18ec7d5c SW |
986 | struct gfs2_log_descriptor *ld, |
987 | __be64 *ptr, int pass) | |
988 | { | |
feaa7bba | 989 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
5c676f6d | 990 | struct gfs2_glock *gl = ip->i_gl; |
18ec7d5c SW |
991 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
992 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 SW |
993 | u64 blkno; |
994 | u64 esc; | |
18ec7d5c SW |
995 | int error = 0; |
996 | ||
997 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) | |
998 | return 0; | |
999 | ||
e1cb6be9 BP |
1000 | gfs2_replay_incr_blk(jd, &start); |
1001 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { | |
18ec7d5c SW |
1002 | blkno = be64_to_cpu(*ptr++); |
1003 | esc = be64_to_cpu(*ptr++); | |
1004 | ||
a17d758b | 1005 | jd->jd_found_blocks++; |
18ec7d5c | 1006 | |
a17d758b | 1007 | if (gfs2_revoke_check(jd, blkno, start)) |
18ec7d5c SW |
1008 | continue; |
1009 | ||
1010 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
1011 | if (error) | |
1012 | return error; | |
1013 | ||
1014 | bh_ip = gfs2_meta_new(gl, blkno); | |
1015 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
1016 | ||
1017 | /* Unescape */ | |
1018 | if (esc) { | |
1019 | __be32 *eptr = (__be32 *)bh_ip->b_data; | |
1020 | *eptr = cpu_to_be32(GFS2_MAGIC); | |
1021 | } | |
1022 | mark_buffer_dirty(bh_ip); | |
1023 | ||
1024 | brelse(bh_log); | |
1025 | brelse(bh_ip); | |
18ec7d5c | 1026 | |
a17d758b | 1027 | jd->jd_replayed_blocks++; |
18ec7d5c SW |
1028 | } |
1029 | ||
1030 | return error; | |
1031 | } | |
1032 | ||
1033 | /* FIXME: sort out accounting for log blocks etc. */ | |
1034 | ||
1035 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
1036 | { | |
feaa7bba SW |
1037 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
1038 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
18ec7d5c SW |
1039 | |
1040 | if (error) { | |
7276b3b0 | 1041 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
1042 | return; |
1043 | } | |
1044 | if (pass != 1) | |
1045 | return; | |
1046 | ||
1047 | /* data sync? */ | |
7276b3b0 | 1048 | gfs2_meta_sync(ip->i_gl); |
18ec7d5c SW |
1049 | |
1050 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", | |
a17d758b | 1051 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
18ec7d5c SW |
1052 | } |
1053 | ||
16ca9412 | 1054 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
18ec7d5c | 1055 | { |
d69a3c65 | 1056 | struct list_head *head; |
18ec7d5c SW |
1057 | struct gfs2_bufdata *bd; |
1058 | ||
d69a3c65 | 1059 | if (tr == NULL) |
16ca9412 | 1060 | return; |
16ca9412 | 1061 | |
d69a3c65 | 1062 | head = &tr->tr_databuf; |
18ec7d5c | 1063 | while (!list_empty(head)) { |
c0752aa7 BP |
1064 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list); |
1065 | list_del_init(&bd->bd_list); | |
16ca9412 | 1066 | gfs2_unpin(sdp, bd->bd_bh, tr); |
18ec7d5c | 1067 | } |
b3b94faa DT |
1068 | } |
1069 | ||
18ec7d5c | 1070 | |
32ac43f6 | 1071 | static const struct gfs2_log_operations gfs2_buf_lops = { |
b3b94faa DT |
1072 | .lo_before_commit = buf_lo_before_commit, |
1073 | .lo_after_commit = buf_lo_after_commit, | |
1074 | .lo_before_scan = buf_lo_before_scan, | |
1075 | .lo_scan_elements = buf_lo_scan_elements, | |
1076 | .lo_after_scan = buf_lo_after_scan, | |
ea67eedb | 1077 | .lo_name = "buf", |
b3b94faa DT |
1078 | }; |
1079 | ||
32ac43f6 | 1080 | static const struct gfs2_log_operations gfs2_revoke_lops = { |
b3b94faa | 1081 | .lo_before_commit = revoke_lo_before_commit, |
f42ab085 | 1082 | .lo_after_commit = revoke_lo_after_commit, |
b3b94faa DT |
1083 | .lo_before_scan = revoke_lo_before_scan, |
1084 | .lo_scan_elements = revoke_lo_scan_elements, | |
1085 | .lo_after_scan = revoke_lo_after_scan, | |
ea67eedb | 1086 | .lo_name = "revoke", |
b3b94faa DT |
1087 | }; |
1088 | ||
32ac43f6 | 1089 | static const struct gfs2_log_operations gfs2_databuf_lops = { |
b3b94faa | 1090 | .lo_before_commit = databuf_lo_before_commit, |
18ec7d5c SW |
1091 | .lo_after_commit = databuf_lo_after_commit, |
1092 | .lo_scan_elements = databuf_lo_scan_elements, | |
1093 | .lo_after_scan = databuf_lo_after_scan, | |
ea67eedb | 1094 | .lo_name = "databuf", |
b3b94faa DT |
1095 | }; |
1096 | ||
b09e593d | 1097 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
16615be1 | 1098 | &gfs2_databuf_lops, |
b3b94faa | 1099 | &gfs2_buf_lops, |
16615be1 | 1100 | &gfs2_revoke_lops, |
ea67eedb | 1101 | NULL, |
b3b94faa DT |
1102 | }; |
1103 |