]>
Commit | Line | Data |
---|---|---|
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 | 24 | #include "glock.h" |
4a55752a | 25 | #include "glops.h" |
b3b94faa DT |
26 | #include "log.h" |
27 | #include "lops.h" | |
28 | #include "meta_io.h" | |
29 | #include "recovery.h" | |
30 | #include "rgrp.h" | |
31 | #include "trans.h" | |
5c676f6d | 32 | #include "util.h" |
63997775 | 33 | #include "trace_gfs2.h" |
b3b94faa | 34 | |
9b9107a5 SW |
35 | /** |
36 | * gfs2_pin - Pin a buffer in memory | |
37 | * @sdp: The superblock | |
38 | * @bh: The buffer to be pinned | |
39 | * | |
40 | * The log lock must be held when calling this function | |
41 | */ | |
767f433f | 42 | void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) |
9b9107a5 SW |
43 | { |
44 | struct gfs2_bufdata *bd; | |
45 | ||
29687a2a | 46 | BUG_ON(!current->journal_info); |
9b9107a5 SW |
47 | |
48 | clear_buffer_dirty(bh); | |
49 | if (test_set_buffer_pinned(bh)) | |
50 | gfs2_assert_withdraw(sdp, 0); | |
51 | if (!buffer_uptodate(bh)) | |
9e1a9ecd | 52 | gfs2_io_error_bh_wd(sdp, bh); |
9b9107a5 SW |
53 | bd = bh->b_private; |
54 | /* If this buffer is in the AIL and it has already been written | |
55 | * to in-place disk block, remove it from the AIL. | |
56 | */ | |
c618e87a | 57 | spin_lock(&sdp->sd_ail_lock); |
16ca9412 BM |
58 | if (bd->bd_tr) |
59 | list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); | |
c618e87a | 60 | spin_unlock(&sdp->sd_ail_lock); |
9b9107a5 | 61 | get_bh(bh); |
5e687eac | 62 | atomic_inc(&sdp->sd_log_pinned); |
63997775 | 63 | trace_gfs2_pin(bd, 1); |
9b9107a5 SW |
64 | } |
65 | ||
7c9ca621 BP |
66 | static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) |
67 | { | |
68 | return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; | |
69 | } | |
70 | ||
71 | static void maybe_release_space(struct gfs2_bufdata *bd) | |
72 | { | |
73 | struct gfs2_glock *gl = bd->bd_gl; | |
15562c43 | 74 | struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
6f6597ba | 75 | struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); |
7c9ca621 BP |
76 | unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; |
77 | struct gfs2_bitmap *bi = rgd->rd_bits + index; | |
78 | ||
9e514605 | 79 | rgrp_lock_local(rgd); |
5a7c6690 | 80 | if (bi->bi_clone == NULL) |
9e514605 | 81 | goto out; |
7c9ca621 | 82 | if (sdp->sd_args.ar_discard) |
66fc061b | 83 | gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); |
7c9ca621 | 84 | memcpy(bi->bi_clone + bi->bi_offset, |
281b4952 | 85 | bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); |
7c9ca621 BP |
86 | clear_bit(GBF_FULL, &bi->bi_flags); |
87 | rgd->rd_free_clone = rgd->rd_free; | |
725d0e9d | 88 | BUG_ON(rgd->rd_free_clone < rgd->rd_reserved); |
5ea5050c | 89 | rgd->rd_extfail_pt = rgd->rd_free; |
9e514605 AG |
90 | |
91 | out: | |
92 | rgrp_unlock_local(rgd); | |
7c9ca621 BP |
93 | } |
94 | ||
9b9107a5 SW |
95 | /** |
96 | * gfs2_unpin - Unpin a buffer | |
97 | * @sdp: the filesystem the buffer belongs to | |
98 | * @bh: The buffer to unpin | |
99 | * @ai: | |
29687a2a | 100 | * @flags: The inode dirty flags |
9b9107a5 SW |
101 | * |
102 | */ | |
103 | ||
104 | static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
16ca9412 | 105 | struct gfs2_trans *tr) |
9b9107a5 SW |
106 | { |
107 | struct gfs2_bufdata *bd = bh->b_private; | |
108 | ||
29687a2a SW |
109 | BUG_ON(!buffer_uptodate(bh)); |
110 | BUG_ON(!buffer_pinned(bh)); | |
9b9107a5 SW |
111 | |
112 | lock_buffer(bh); | |
113 | mark_buffer_dirty(bh); | |
114 | clear_buffer_pinned(bh); | |
115 | ||
7c9ca621 BP |
116 | if (buffer_is_rgrp(bd)) |
117 | maybe_release_space(bd); | |
118 | ||
d6a079e8 | 119 | spin_lock(&sdp->sd_ail_lock); |
16ca9412 | 120 | if (bd->bd_tr) { |
9b9107a5 SW |
121 | list_del(&bd->bd_ail_st_list); |
122 | brelse(bh); | |
123 | } else { | |
124 | struct gfs2_glock *gl = bd->bd_gl; | |
125 | list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); | |
126 | atomic_inc(&gl->gl_ail_count); | |
127 | } | |
16ca9412 BM |
128 | bd->bd_tr = tr; |
129 | list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); | |
d6a079e8 DC |
130 | spin_unlock(&sdp->sd_ail_lock); |
131 | ||
29687a2a | 132 | clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); |
63997775 | 133 | trace_gfs2_pin(bd, 0); |
9b9107a5 | 134 | unlock_buffer(bh); |
5e687eac | 135 | atomic_dec(&sdp->sd_log_pinned); |
9b9107a5 SW |
136 | } |
137 | ||
19ebc050 | 138 | void gfs2_log_incr_head(struct gfs2_sbd *sdp) |
16615be1 | 139 | { |
e8c92ed7 SW |
140 | BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && |
141 | (sdp->sd_log_flush_head != sdp->sd_log_head)); | |
142 | ||
722f6f62 | 143 | if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) |
e8c92ed7 | 144 | sdp->sd_log_flush_head = 0; |
16615be1 SW |
145 | } |
146 | ||
19ebc050 | 147 | u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lblock) |
16615be1 | 148 | { |
e8c92ed7 | 149 | struct gfs2_journal_extent *je; |
e8c92ed7 | 150 | |
19ebc050 AG |
151 | list_for_each_entry(je, &jd->extent_list, list) { |
152 | if (lblock >= je->lblock && lblock < je->lblock + je->blocks) | |
153 | return je->dblock + lblock - je->lblock; | |
e8c92ed7 SW |
154 | } |
155 | ||
156 | return -1; | |
16615be1 SW |
157 | } |
158 | ||
e8c92ed7 SW |
159 | /** |
160 | * gfs2_end_log_write_bh - end log write of pagecache data with buffers | |
161 | * @sdp: The superblock | |
162 | * @bvec: The bio_vec | |
163 | * @error: The i/o status | |
164 | * | |
4519eaad | 165 | * This finds the relevant buffers and unlocks them and sets the |
e8c92ed7 SW |
166 | * error flag according to the status of the i/o request. This is |
167 | * used when the log is writing data which has an in-place version | |
168 | * that is pinned in the pagecache. | |
169 | */ | |
170 | ||
6dc4f100 ML |
171 | static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, |
172 | struct bio_vec *bvec, | |
4e4cbee9 | 173 | blk_status_t error) |
16615be1 | 174 | { |
e8c92ed7 SW |
175 | struct buffer_head *bh, *next; |
176 | struct page *page = bvec->bv_page; | |
177 | unsigned size; | |
178 | ||
179 | bh = page_buffers(page); | |
180 | size = bvec->bv_len; | |
181 | while (bh_offset(bh) < bvec->bv_offset) | |
182 | bh = bh->b_this_page; | |
183 | do { | |
184 | if (error) | |
87354e5d | 185 | mark_buffer_write_io_error(bh); |
e8c92ed7 SW |
186 | unlock_buffer(bh); |
187 | next = bh->b_this_page; | |
188 | size -= bh->b_size; | |
189 | brelse(bh); | |
190 | bh = next; | |
191 | } while(bh && size); | |
16615be1 SW |
192 | } |
193 | ||
47ac5537 | 194 | /** |
e8c92ed7 SW |
195 | * gfs2_end_log_write - end of i/o to the log |
196 | * @bio: The bio | |
e8c92ed7 SW |
197 | * |
198 | * Each bio_vec contains either data from the pagecache or data | |
199 | * relating to the log itself. Here we iterate over the bio_vec | |
200 | * array, processing both kinds of data. | |
47ac5537 SW |
201 | * |
202 | */ | |
203 | ||
4246a0b6 | 204 | static void gfs2_end_log_write(struct bio *bio) |
47ac5537 | 205 | { |
e8c92ed7 SW |
206 | struct gfs2_sbd *sdp = bio->bi_private; |
207 | struct bio_vec *bvec; | |
208 | struct page *page; | |
6dc4f100 | 209 | struct bvec_iter_all iter_all; |
e8c92ed7 | 210 | |
942b0cdd | 211 | if (bio->bi_status) { |
f34a6135 BP |
212 | if (!cmpxchg(&sdp->sd_log_error, 0, (int)bio->bi_status)) |
213 | fs_err(sdp, "Error %d writing to journal, jid=%u\n", | |
214 | bio->bi_status, sdp->sd_jdesc->jd_jid); | |
f05b86db BP |
215 | gfs2_withdraw_delayed(sdp); |
216 | /* prevent more writes to the journal */ | |
217 | clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); | |
942b0cdd BP |
218 | wake_up(&sdp->sd_logd_waitq); |
219 | } | |
e8c92ed7 | 220 | |
2b070cfe | 221 | bio_for_each_segment_all(bvec, bio, iter_all) { |
e8c92ed7 SW |
222 | page = bvec->bv_page; |
223 | if (page_has_buffers(page)) | |
4e4cbee9 | 224 | gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); |
e8c92ed7 SW |
225 | else |
226 | mempool_free(page, gfs2_page_pool); | |
227 | } | |
47ac5537 | 228 | |
e8c92ed7 | 229 | bio_put(bio); |
47ac5537 SW |
230 | if (atomic_dec_and_test(&sdp->sd_log_in_flight)) |
231 | wake_up(&sdp->sd_log_flush_wait); | |
232 | } | |
233 | ||
234 | /** | |
5b846095 AD |
235 | * gfs2_log_submit_bio - Submit any pending log bio |
236 | * @biop: Address of the bio pointer | |
f4686c26 | 237 | * @opf: REQ_OP | op_flags |
47ac5537 | 238 | * |
e8c92ed7 SW |
239 | * Submit any pending part-built or full bio to the block device. If |
240 | * there is no pending bio, then this is a no-op. | |
47ac5537 SW |
241 | */ |
242 | ||
f4686c26 | 243 | void gfs2_log_submit_bio(struct bio **biop, int opf) |
47ac5537 | 244 | { |
5b846095 AD |
245 | struct bio *bio = *biop; |
246 | if (bio) { | |
247 | struct gfs2_sbd *sdp = bio->bi_private; | |
e8c92ed7 | 248 | atomic_inc(&sdp->sd_log_in_flight); |
f4686c26 | 249 | bio->bi_opf = opf; |
5b846095 AD |
250 | submit_bio(bio); |
251 | *biop = NULL; | |
e8c92ed7 SW |
252 | } |
253 | } | |
47ac5537 | 254 | |
e8c92ed7 | 255 | /** |
5b846095 AD |
256 | * gfs2_log_alloc_bio - Allocate a bio |
257 | * @sdp: The super block | |
258 | * @blkno: The device block number we want to write to | |
259 | * @end_io: The bi_end_io callback | |
e8c92ed7 | 260 | * |
5b846095 | 261 | * Allocate a new bio, initialize it with the given parameters and return it. |
e8c92ed7 | 262 | * |
5b846095 | 263 | * Returns: The newly allocated bio |
e8c92ed7 SW |
264 | */ |
265 | ||
5b846095 AD |
266 | static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, |
267 | bio_end_io_t *end_io) | |
e8c92ed7 SW |
268 | { |
269 | struct super_block *sb = sdp->sd_vfs; | |
5b846095 | 270 | struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); |
e8c92ed7 | 271 | |
aa83da7f | 272 | bio->bi_iter.bi_sector = blkno << sdp->sd_fsb2bb_shift; |
74d46992 | 273 | bio_set_dev(bio, sb->s_bdev); |
5b846095 | 274 | bio->bi_end_io = end_io; |
e8c92ed7 SW |
275 | bio->bi_private = sdp; |
276 | ||
e8c92ed7 | 277 | return bio; |
47ac5537 SW |
278 | } |
279 | ||
280 | /** | |
e8c92ed7 | 281 | * gfs2_log_get_bio - Get cached log bio, or allocate a new one |
5b846095 | 282 | * @sdp: The super block |
e8c92ed7 | 283 | * @blkno: The device block number we want to write to |
5b846095 AD |
284 | * @bio: The bio to get or allocate |
285 | * @op: REQ_OP | |
286 | * @end_io: The bi_end_io callback | |
287 | * @flush: Always flush the current bio and allocate a new one? | |
e8c92ed7 SW |
288 | * |
289 | * If there is a cached bio, then if the next block number is sequential | |
290 | * with the previous one, return it, otherwise flush the bio to the | |
5b846095 | 291 | * device. If there is no cached bio, or we just flushed it, then |
e8c92ed7 | 292 | * allocate a new one. |
47ac5537 | 293 | * |
e8c92ed7 | 294 | * Returns: The bio to use for log writes |
47ac5537 SW |
295 | */ |
296 | ||
5b846095 AD |
297 | static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, |
298 | struct bio **biop, int op, | |
299 | bio_end_io_t *end_io, bool flush) | |
47ac5537 | 300 | { |
5b846095 | 301 | struct bio *bio = *biop; |
e8c92ed7 SW |
302 | |
303 | if (bio) { | |
5b846095 AD |
304 | u64 nblk; |
305 | ||
f73a1c7d | 306 | nblk = bio_end_sector(bio); |
e8c92ed7 | 307 | nblk >>= sdp->sd_fsb2bb_shift; |
5b846095 | 308 | if (blkno == nblk && !flush) |
e8c92ed7 | 309 | return bio; |
f4686c26 | 310 | gfs2_log_submit_bio(biop, op); |
e8c92ed7 SW |
311 | } |
312 | ||
5b846095 AD |
313 | *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); |
314 | return *biop; | |
47ac5537 SW |
315 | } |
316 | ||
317 | /** | |
e8c92ed7 | 318 | * gfs2_log_write - write to log |
47ac5537 | 319 | * @sdp: the filesystem |
e8c92ed7 SW |
320 | * @page: the page to write |
321 | * @size: the size of the data to write | |
322 | * @offset: the offset within the page | |
c1696fb8 | 323 | * @blkno: block number of the log entry |
47ac5537 | 324 | * |
e8c92ed7 SW |
325 | * Try and add the page segment to the current bio. If that fails, |
326 | * submit the current bio to the device and create a new one, and | |
327 | * then add the page segment to that. | |
47ac5537 SW |
328 | */ |
329 | ||
82218943 BP |
330 | void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, |
331 | struct page *page, unsigned size, unsigned offset, | |
332 | u64 blkno) | |
47ac5537 | 333 | { |
e8c92ed7 SW |
334 | struct bio *bio; |
335 | int ret; | |
336 | ||
82218943 | 337 | bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_log_bio, REQ_OP_WRITE, |
5b846095 | 338 | gfs2_end_log_write, false); |
e8c92ed7 SW |
339 | ret = bio_add_page(bio, page, size, offset); |
340 | if (ret == 0) { | |
82218943 | 341 | bio = gfs2_log_get_bio(sdp, blkno, &jd->jd_log_bio, |
5b846095 | 342 | REQ_OP_WRITE, gfs2_end_log_write, true); |
e8c92ed7 SW |
343 | ret = bio_add_page(bio, page, size, offset); |
344 | WARN_ON(ret == 0); | |
345 | } | |
346 | } | |
47ac5537 | 347 | |
e8c92ed7 SW |
348 | /** |
349 | * gfs2_log_write_bh - write a buffer's content to the log | |
350 | * @sdp: The super block | |
351 | * @bh: The buffer pointing to the in-place location | |
352 | * | |
353 | * This writes the content of the buffer to the next available location | |
354 | * in the log. The buffer will be unlocked once the i/o to the log has | |
355 | * completed. | |
356 | */ | |
357 | ||
358 | static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) | |
359 | { | |
19ebc050 AG |
360 | u64 dblock; |
361 | ||
362 | dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); | |
363 | gfs2_log_incr_head(sdp); | |
82218943 BP |
364 | gfs2_log_write(sdp, sdp->sd_jdesc, bh->b_page, bh->b_size, |
365 | bh_offset(bh), dblock); | |
e8c92ed7 | 366 | } |
47ac5537 | 367 | |
e8c92ed7 SW |
368 | /** |
369 | * gfs2_log_write_page - write one block stored in a page, into the log | |
370 | * @sdp: The superblock | |
371 | * @page: The struct page | |
372 | * | |
373 | * This writes the first block-sized part of the page into the log. Note | |
374 | * that the page must have been allocated from the gfs2_page_pool mempool | |
375 | * and that after this has been called, ownership has been transferred and | |
376 | * the page may be freed at any time. | |
377 | */ | |
47ac5537 | 378 | |
2a6fe26c | 379 | static void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) |
e8c92ed7 SW |
380 | { |
381 | struct super_block *sb = sdp->sd_vfs; | |
19ebc050 AG |
382 | u64 dblock; |
383 | ||
384 | dblock = gfs2_log_bmap(sdp->sd_jdesc, sdp->sd_log_flush_head); | |
385 | gfs2_log_incr_head(sdp); | |
82218943 | 386 | gfs2_log_write(sdp, sdp->sd_jdesc, page, sb->s_blocksize, 0, dblock); |
47ac5537 | 387 | } |
16615be1 | 388 | |
f4686c26 AD |
389 | /** |
390 | * gfs2_end_log_read - end I/O callback for reads from the log | |
391 | * @bio: The bio | |
392 | * | |
393 | * Simply unlock the pages in the bio. The main thread will wait on them and | |
394 | * process them in order as necessary. | |
395 | */ | |
396 | ||
397 | static void gfs2_end_log_read(struct bio *bio) | |
398 | { | |
399 | struct page *page; | |
400 | struct bio_vec *bvec; | |
f4686c26 AD |
401 | struct bvec_iter_all iter_all; |
402 | ||
ef75bd71 | 403 | bio_for_each_segment_all(bvec, bio, iter_all) { |
f4686c26 AD |
404 | page = bvec->bv_page; |
405 | if (bio->bi_status) { | |
406 | int err = blk_status_to_errno(bio->bi_status); | |
407 | ||
408 | SetPageError(page); | |
409 | mapping_set_error(page->mapping, err); | |
410 | } | |
411 | unlock_page(page); | |
412 | } | |
413 | ||
414 | bio_put(bio); | |
415 | } | |
416 | ||
417 | /** | |
418 | * gfs2_jhead_pg_srch - Look for the journal head in a given page. | |
419 | * @jd: The journal descriptor | |
420 | * @page: The page to look in | |
421 | * | |
422 | * Returns: 1 if found, 0 otherwise. | |
423 | */ | |
424 | ||
425 | static bool gfs2_jhead_pg_srch(struct gfs2_jdesc *jd, | |
426 | struct gfs2_log_header_host *head, | |
427 | struct page *page) | |
428 | { | |
429 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
3f649ab7 | 430 | struct gfs2_log_header_host lh; |
f4686c26 AD |
431 | void *kaddr = kmap_atomic(page); |
432 | unsigned int offset; | |
433 | bool ret = false; | |
434 | ||
435 | for (offset = 0; offset < PAGE_SIZE; offset += sdp->sd_sb.sb_bsize) { | |
436 | if (!__get_log_header(sdp, kaddr + offset, 0, &lh)) { | |
7582026f | 437 | if (lh.lh_sequence >= head->lh_sequence) |
f4686c26 AD |
438 | *head = lh; |
439 | else { | |
440 | ret = true; | |
441 | break; | |
442 | } | |
443 | } | |
444 | } | |
445 | kunmap_atomic(kaddr); | |
446 | return ret; | |
447 | } | |
448 | ||
449 | /** | |
450 | * gfs2_jhead_process_page - Search/cleanup a page | |
451 | * @jd: The journal descriptor | |
452 | * @index: Index of the page to look into | |
453 | * @done: If set, perform only cleanup, else search and set if found. | |
454 | * | |
455 | * Find the page with 'index' in the journal's mapping. Search the page for | |
456 | * the journal head if requested (cleanup == false). Release refs on the | |
457 | * page so the page cache can reclaim it (put_page() twice). We grabbed a | |
458 | * reference on this page two times, first when we did a find_or_create_page() | |
459 | * to obtain the page to add it to the bio and second when we do a | |
460 | * find_get_page() here to get the page to wait on while I/O on it is being | |
461 | * completed. | |
462 | * This function is also used to free up a page we might've grabbed but not | |
463 | * used. Maybe we added it to a bio, but not submitted it for I/O. Or we | |
464 | * submitted the I/O, but we already found the jhead so we only need to drop | |
465 | * our references to the page. | |
466 | */ | |
467 | ||
468 | static void gfs2_jhead_process_page(struct gfs2_jdesc *jd, unsigned long index, | |
469 | struct gfs2_log_header_host *head, | |
470 | bool *done) | |
471 | { | |
472 | struct page *page; | |
473 | ||
474 | page = find_get_page(jd->jd_inode->i_mapping, index); | |
475 | wait_on_page_locked(page); | |
476 | ||
477 | if (PageError(page)) | |
478 | *done = true; | |
479 | ||
480 | if (!*done) | |
481 | *done = gfs2_jhead_pg_srch(jd, head, page); | |
482 | ||
483 | put_page(page); /* Once for find_get_page */ | |
484 | put_page(page); /* Once more for find_or_create_page */ | |
485 | } | |
486 | ||
eed0f953 AG |
487 | static struct bio *gfs2_chain_bio(struct bio *prev, unsigned int nr_iovecs) |
488 | { | |
489 | struct bio *new; | |
490 | ||
491 | new = bio_alloc(GFP_NOIO, nr_iovecs); | |
492 | bio_copy_dev(new, prev); | |
493 | new->bi_iter.bi_sector = bio_end_sector(prev); | |
494 | new->bi_opf = prev->bi_opf; | |
495 | new->bi_write_hint = prev->bi_write_hint; | |
496 | bio_chain(new, prev); | |
497 | submit_bio(prev); | |
498 | return new; | |
499 | } | |
500 | ||
f4686c26 AD |
501 | /** |
502 | * gfs2_find_jhead - find the head of a log | |
503 | * @jd: The journal descriptor | |
504 | * @head: The log descriptor for the head of the log is returned here | |
505 | * | |
506 | * Do a search of a journal by reading it in large chunks using bios and find | |
507 | * the valid log entry with the highest sequence number. (i.e. the log head) | |
508 | * | |
509 | * Returns: 0 on success, errno otherwise | |
510 | */ | |
511 | int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header_host *head, | |
512 | bool keep_cache) | |
513 | { | |
514 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
515 | struct address_space *mapping = jd->jd_inode->i_mapping; | |
516 | unsigned int block = 0, blocks_submitted = 0, blocks_read = 0; | |
eed0f953 | 517 | unsigned int bsize = sdp->sd_sb.sb_bsize, off; |
f4686c26 AD |
518 | unsigned int bsize_shift = sdp->sd_sb.sb_bsize_shift; |
519 | unsigned int shift = PAGE_SHIFT - bsize_shift; | |
20be493b | 520 | unsigned int max_blocks = 2 * 1024 * 1024 >> bsize_shift; |
f4686c26 AD |
521 | struct gfs2_journal_extent *je; |
522 | int sz, ret = 0; | |
523 | struct bio *bio = NULL; | |
524 | struct page *page = NULL; | |
20be493b | 525 | bool done = false; |
f4686c26 AD |
526 | errseq_t since; |
527 | ||
528 | memset(head, 0, sizeof(*head)); | |
529 | if (list_empty(&jd->extent_list)) | |
530 | gfs2_map_journal_extents(sdp, jd); | |
531 | ||
532 | since = filemap_sample_wb_err(mapping); | |
533 | list_for_each_entry(je, &jd->extent_list, list) { | |
eed0f953 | 534 | u64 dblock = je->dblock; |
f4686c26 | 535 | |
eed0f953 | 536 | for (; block < je->lblock + je->blocks; block++, dblock++) { |
f4686c26 AD |
537 | if (!page) { |
538 | page = find_or_create_page(mapping, | |
539 | block >> shift, GFP_NOFS); | |
540 | if (!page) { | |
541 | ret = -ENOMEM; | |
542 | done = true; | |
543 | goto out; | |
544 | } | |
eed0f953 | 545 | off = 0; |
f4686c26 AD |
546 | } |
547 | ||
20be493b | 548 | if (bio && (off || block < blocks_submitted + max_blocks)) { |
aa83da7f AG |
549 | sector_t sector = dblock << sdp->sd_fsb2bb_shift; |
550 | ||
551 | if (bio_end_sector(bio) == sector) { | |
552 | sz = bio_add_page(bio, page, bsize, off); | |
553 | if (sz == bsize) | |
554 | goto block_added; | |
555 | } | |
eed0f953 AG |
556 | if (off) { |
557 | unsigned int blocks = | |
558 | (PAGE_SIZE - off) >> bsize_shift; | |
559 | ||
560 | bio = gfs2_chain_bio(bio, blocks); | |
eed0f953 | 561 | goto add_block_to_new_bio; |
f4686c26 | 562 | } |
eed0f953 AG |
563 | } |
564 | ||
565 | if (bio) { | |
20be493b | 566 | blocks_submitted = block; |
f4686c26 | 567 | submit_bio(bio); |
f4686c26 AD |
568 | } |
569 | ||
f4686c26 AD |
570 | bio = gfs2_log_alloc_bio(sdp, dblock, gfs2_end_log_read); |
571 | bio->bi_opf = REQ_OP_READ; | |
eed0f953 AG |
572 | add_block_to_new_bio: |
573 | sz = bio_add_page(bio, page, bsize, off); | |
574 | BUG_ON(sz != bsize); | |
575 | block_added: | |
576 | off += bsize; | |
577 | if (off == PAGE_SIZE) | |
f4686c26 | 578 | page = NULL; |
20be493b | 579 | if (blocks_submitted <= blocks_read + max_blocks) { |
f4686c26 AD |
580 | /* Keep at least one bio in flight */ |
581 | continue; | |
582 | } | |
583 | ||
584 | gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); | |
585 | blocks_read += PAGE_SIZE >> bsize_shift; | |
586 | if (done) | |
587 | goto out; /* found */ | |
588 | } | |
589 | } | |
590 | ||
591 | out: | |
592 | if (bio) | |
593 | submit_bio(bio); | |
594 | while (blocks_read < block) { | |
595 | gfs2_jhead_process_page(jd, blocks_read >> shift, head, &done); | |
596 | blocks_read += PAGE_SIZE >> bsize_shift; | |
597 | } | |
598 | ||
599 | if (!ret) | |
600 | ret = filemap_check_wb_err(mapping, since); | |
601 | ||
602 | if (!keep_cache) | |
603 | truncate_inode_pages(mapping, 0); | |
604 | ||
605 | return ret; | |
606 | } | |
607 | ||
dad30e90 SW |
608 | static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, |
609 | u32 ld_length, u32 ld_data1) | |
16615be1 | 610 | { |
144a4c2f | 611 | struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); |
e8c92ed7 SW |
612 | struct gfs2_log_descriptor *ld = page_address(page); |
613 | clear_page(ld); | |
16615be1 SW |
614 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
615 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); | |
616 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); | |
617 | ld->ld_type = cpu_to_be32(ld_type); | |
dad30e90 SW |
618 | ld->ld_length = cpu_to_be32(ld_length); |
619 | ld->ld_data1 = cpu_to_be32(ld_data1); | |
16615be1 | 620 | ld->ld_data2 = 0; |
e8c92ed7 | 621 | return page; |
16615be1 SW |
622 | } |
623 | ||
dad30e90 SW |
624 | static void gfs2_check_magic(struct buffer_head *bh) |
625 | { | |
626 | void *kaddr; | |
627 | __be32 *ptr; | |
628 | ||
629 | clear_buffer_escaped(bh); | |
630 | kaddr = kmap_atomic(bh->b_page); | |
631 | ptr = kaddr + bh_offset(bh); | |
632 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) | |
633 | set_buffer_escaped(bh); | |
634 | kunmap_atomic(kaddr); | |
635 | } | |
636 | ||
7f63257d BM |
637 | static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) |
638 | { | |
639 | struct gfs2_bufdata *bda, *bdb; | |
640 | ||
641 | bda = list_entry(a, struct gfs2_bufdata, bd_list); | |
642 | bdb = list_entry(b, struct gfs2_bufdata, bd_list); | |
643 | ||
644 | if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) | |
645 | return -1; | |
646 | if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) | |
647 | return 1; | |
648 | return 0; | |
649 | } | |
650 | ||
dad30e90 SW |
651 | static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, |
652 | unsigned int total, struct list_head *blist, | |
653 | bool is_databuf) | |
b3b94faa | 654 | { |
b3b94faa DT |
655 | struct gfs2_log_descriptor *ld; |
656 | struct gfs2_bufdata *bd1 = NULL, *bd2; | |
e8c92ed7 | 657 | struct page *page; |
b3b94faa DT |
658 | unsigned int num; |
659 | unsigned n; | |
660 | __be64 *ptr; | |
661 | ||
905d2aef | 662 | gfs2_log_lock(sdp); |
7f63257d | 663 | list_sort(NULL, blist, blocknr_cmp); |
c0752aa7 | 664 | bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); |
b3b94faa DT |
665 | while(total) { |
666 | num = total; | |
667 | if (total > limit) | |
668 | num = limit; | |
905d2aef | 669 | gfs2_log_unlock(sdp); |
4a586812 BP |
670 | page = gfs2_get_log_desc(sdp, |
671 | is_databuf ? GFS2_LOG_DESC_JDATA : | |
672 | GFS2_LOG_DESC_METADATA, num + 1, num); | |
e8c92ed7 | 673 | ld = page_address(page); |
905d2aef | 674 | gfs2_log_lock(sdp); |
e8c92ed7 | 675 | ptr = (__be64 *)(ld + 1); |
b3b94faa DT |
676 | |
677 | n = 0; | |
c0752aa7 | 678 | list_for_each_entry_continue(bd1, blist, bd_list) { |
b3b94faa | 679 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
dad30e90 SW |
680 | if (is_databuf) { |
681 | gfs2_check_magic(bd1->bd_bh); | |
682 | *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); | |
683 | } | |
b3b94faa DT |
684 | if (++n >= num) |
685 | break; | |
686 | } | |
687 | ||
905d2aef | 688 | gfs2_log_unlock(sdp); |
e8c92ed7 | 689 | gfs2_log_write_page(sdp, page); |
905d2aef | 690 | gfs2_log_lock(sdp); |
b3b94faa DT |
691 | |
692 | n = 0; | |
c0752aa7 | 693 | list_for_each_entry_continue(bd2, blist, bd_list) { |
16615be1 | 694 | get_bh(bd2->bd_bh); |
905d2aef | 695 | gfs2_log_unlock(sdp); |
16615be1 | 696 | lock_buffer(bd2->bd_bh); |
dad30e90 SW |
697 | |
698 | if (buffer_escaped(bd2->bd_bh)) { | |
699 | void *kaddr; | |
700 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
701 | ptr = page_address(page); | |
702 | kaddr = kmap_atomic(bd2->bd_bh->b_page); | |
703 | memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), | |
704 | bd2->bd_bh->b_size); | |
705 | kunmap_atomic(kaddr); | |
706 | *(__be32 *)ptr = 0; | |
707 | clear_buffer_escaped(bd2->bd_bh); | |
708 | unlock_buffer(bd2->bd_bh); | |
709 | brelse(bd2->bd_bh); | |
710 | gfs2_log_write_page(sdp, page); | |
711 | } else { | |
712 | gfs2_log_write_bh(sdp, bd2->bd_bh); | |
713 | } | |
905d2aef | 714 | gfs2_log_lock(sdp); |
b3b94faa DT |
715 | if (++n >= num) |
716 | break; | |
717 | } | |
718 | ||
905d2aef | 719 | BUG_ON(total < num); |
b3b94faa DT |
720 | total -= num; |
721 | } | |
905d2aef | 722 | gfs2_log_unlock(sdp); |
b3b94faa DT |
723 | } |
724 | ||
d69a3c65 | 725 | static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
dad30e90 SW |
726 | { |
727 | unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ | |
022ef4fe | 728 | unsigned int nbuf; |
d69a3c65 SW |
729 | if (tr == NULL) |
730 | return; | |
022ef4fe SW |
731 | nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; |
732 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); | |
dad30e90 SW |
733 | } |
734 | ||
16ca9412 | 735 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 736 | { |
d69a3c65 | 737 | struct list_head *head; |
b3b94faa DT |
738 | struct gfs2_bufdata *bd; |
739 | ||
d69a3c65 | 740 | if (tr == NULL) |
16ca9412 | 741 | return; |
16ca9412 | 742 | |
d69a3c65 | 743 | head = &tr->tr_buf; |
b3b94faa | 744 | while (!list_empty(head)) { |
969183bc | 745 | bd = list_first_entry(head, struct gfs2_bufdata, bd_list); |
c0752aa7 | 746 | list_del_init(&bd->bd_list); |
16ca9412 | 747 | gfs2_unpin(sdp, bd->bd_bh, tr); |
b3b94faa | 748 | } |
b3b94faa DT |
749 | } |
750 | ||
751 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, | |
55167622 | 752 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 753 | { |
b3b94faa DT |
754 | if (pass != 0) |
755 | return; | |
756 | ||
a17d758b BP |
757 | jd->jd_found_blocks = 0; |
758 | jd->jd_replayed_blocks = 0; | |
b3b94faa DT |
759 | } |
760 | ||
7c70b896 | 761 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
b3b94faa DT |
762 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
763 | int pass) | |
764 | { | |
feaa7bba SW |
765 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
766 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
5c676f6d | 767 | struct gfs2_glock *gl = ip->i_gl; |
b3b94faa DT |
768 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
769 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 | 770 | u64 blkno; |
b3b94faa DT |
771 | int error = 0; |
772 | ||
773 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) | |
774 | return 0; | |
775 | ||
e1cb6be9 | 776 | gfs2_replay_incr_blk(jd, &start); |
b3b94faa | 777 | |
e1cb6be9 | 778 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
779 | blkno = be64_to_cpu(*ptr++); |
780 | ||
a17d758b | 781 | jd->jd_found_blocks++; |
b3b94faa | 782 | |
a17d758b | 783 | if (gfs2_revoke_check(jd, blkno, start)) |
b3b94faa DT |
784 | continue; |
785 | ||
786 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
82ffa516 SW |
787 | if (error) |
788 | return error; | |
b3b94faa DT |
789 | |
790 | bh_ip = gfs2_meta_new(gl, blkno); | |
791 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
792 | ||
793 | if (gfs2_meta_check(sdp, bh_ip)) | |
794 | error = -EIO; | |
d14e1ca3 BP |
795 | else { |
796 | struct gfs2_meta_header *mh = | |
797 | (struct gfs2_meta_header *)bh_ip->b_data; | |
798 | ||
799 | if (mh->mh_type == cpu_to_be32(GFS2_METATYPE_RG)) { | |
800 | struct gfs2_rgrpd *rgd; | |
801 | ||
802 | rgd = gfs2_blk2rgrpd(sdp, blkno, false); | |
803 | if (rgd && rgd->rd_addr == blkno && | |
804 | rgd->rd_bits && rgd->rd_bits->bi_bh) { | |
805 | fs_info(sdp, "Replaying 0x%llx but we " | |
806 | "already have a bh!\n", | |
807 | (unsigned long long)blkno); | |
808 | fs_info(sdp, "busy:%d, pinned:%d\n", | |
809 | buffer_busy(rgd->rd_bits->bi_bh) ? 1 : 0, | |
810 | buffer_pinned(rgd->rd_bits->bi_bh)); | |
3792ce97 | 811 | gfs2_dump_glock(NULL, rgd->rd_gl, true); |
d14e1ca3 BP |
812 | } |
813 | } | |
b3b94faa | 814 | mark_buffer_dirty(bh_ip); |
d14e1ca3 | 815 | } |
b3b94faa DT |
816 | brelse(bh_log); |
817 | brelse(bh_ip); | |
818 | ||
819 | if (error) | |
820 | break; | |
821 | ||
a17d758b | 822 | jd->jd_replayed_blocks++; |
b3b94faa DT |
823 | } |
824 | ||
825 | return error; | |
826 | } | |
827 | ||
828 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
829 | { | |
feaa7bba SW |
830 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
831 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
b3b94faa DT |
832 | |
833 | if (error) { | |
4a55752a | 834 | gfs2_inode_metasync(ip->i_gl); |
b3b94faa DT |
835 | return; |
836 | } | |
837 | if (pass != 1) | |
838 | return; | |
839 | ||
4a55752a | 840 | gfs2_inode_metasync(ip->i_gl); |
b3b94faa DT |
841 | |
842 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", | |
a17d758b | 843 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
b3b94faa DT |
844 | } |
845 | ||
d69a3c65 | 846 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
b3b94faa | 847 | { |
b3b94faa | 848 | struct gfs2_meta_header *mh; |
b3b94faa | 849 | unsigned int offset; |
a5b1d3fc | 850 | struct list_head *head = &sdp->sd_log_revokes; |
82e86087 | 851 | struct gfs2_bufdata *bd; |
e8c92ed7 | 852 | struct page *page; |
dad30e90 | 853 | unsigned int length; |
b3b94faa | 854 | |
e7501bf8 | 855 | gfs2_flush_revokes(sdp); |
b3b94faa DT |
856 | if (!sdp->sd_log_num_revoke) |
857 | return; | |
858 | ||
2e9eeaa1 | 859 | length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke); |
dad30e90 | 860 | page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); |
b3b94faa DT |
861 | offset = sizeof(struct gfs2_log_descriptor); |
862 | ||
c0752aa7 | 863 | list_for_each_entry(bd, head, bd_list) { |
b3b94faa DT |
864 | sdp->sd_log_num_revoke--; |
865 | ||
cd915493 | 866 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
e8c92ed7 SW |
867 | gfs2_log_write_page(sdp, page); |
868 | page = mempool_alloc(gfs2_page_pool, GFP_NOIO); | |
869 | mh = page_address(page); | |
870 | clear_page(mh); | |
b3b94faa | 871 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
e3167ded SW |
872 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
873 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); | |
b3b94faa DT |
874 | offset = sizeof(struct gfs2_meta_header); |
875 | } | |
876 | ||
e8c92ed7 | 877 | *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); |
cd915493 | 878 | offset += sizeof(u64); |
b3b94faa DT |
879 | } |
880 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); | |
881 | ||
e8c92ed7 | 882 | gfs2_log_write_page(sdp, page); |
b3b94faa DT |
883 | } |
884 | ||
16ca9412 | 885 | static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
f42ab085 | 886 | { |
a5b1d3fc | 887 | struct list_head *head = &sdp->sd_log_revokes; |
638803d4 BP |
888 | struct gfs2_bufdata *bd; |
889 | struct gfs2_glock *gl; | |
73118ca8 | 890 | |
638803d4 | 891 | while (!list_empty(head)) { |
969183bc | 892 | bd = list_first_entry(head, struct gfs2_bufdata, bd_list); |
638803d4 BP |
893 | list_del_init(&bd->bd_list); |
894 | gl = bd->bd_gl; | |
fe5e7ba1 | 895 | gfs2_glock_remove_revoke(gl); |
f42ab085 SW |
896 | kmem_cache_free(gfs2_bufdata_cachep, bd); |
897 | } | |
898 | } | |
899 | ||
b3b94faa | 900 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
55167622 | 901 | struct gfs2_log_header_host *head, int pass) |
b3b94faa | 902 | { |
b3b94faa DT |
903 | if (pass != 0) |
904 | return; | |
905 | ||
a17d758b BP |
906 | jd->jd_found_revokes = 0; |
907 | jd->jd_replay_tail = head->lh_tail; | |
b3b94faa DT |
908 | } |
909 | ||
7c70b896 | 910 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
b3b94faa DT |
911 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
912 | int pass) | |
913 | { | |
feaa7bba | 914 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
915 | unsigned int blks = be32_to_cpu(ld->ld_length); |
916 | unsigned int revokes = be32_to_cpu(ld->ld_data1); | |
917 | struct buffer_head *bh; | |
918 | unsigned int offset; | |
cd915493 | 919 | u64 blkno; |
b3b94faa DT |
920 | int first = 1; |
921 | int error; | |
922 | ||
923 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) | |
924 | return 0; | |
925 | ||
926 | offset = sizeof(struct gfs2_log_descriptor); | |
927 | ||
e1cb6be9 | 928 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { |
b3b94faa DT |
929 | error = gfs2_replay_read_block(jd, start, &bh); |
930 | if (error) | |
931 | return error; | |
932 | ||
933 | if (!first) | |
934 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); | |
935 | ||
cd915493 | 936 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
b3b94faa DT |
937 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
938 | ||
a17d758b | 939 | error = gfs2_revoke_add(jd, blkno, start); |
3ad62e87 BP |
940 | if (error < 0) { |
941 | brelse(bh); | |
b3b94faa | 942 | return error; |
3ad62e87 | 943 | } |
b3b94faa | 944 | else if (error) |
a17d758b | 945 | jd->jd_found_revokes++; |
b3b94faa DT |
946 | |
947 | if (!--revokes) | |
948 | break; | |
cd915493 | 949 | offset += sizeof(u64); |
b3b94faa DT |
950 | } |
951 | ||
952 | brelse(bh); | |
953 | offset = sizeof(struct gfs2_meta_header); | |
954 | first = 0; | |
955 | } | |
956 | ||
957 | return 0; | |
958 | } | |
959 | ||
960 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
961 | { | |
feaa7bba | 962 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
b3b94faa DT |
963 | |
964 | if (error) { | |
a17d758b | 965 | gfs2_revoke_clean(jd); |
b3b94faa DT |
966 | return; |
967 | } | |
968 | if (pass != 1) | |
969 | return; | |
970 | ||
971 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", | |
a17d758b | 972 | jd->jd_jid, jd->jd_found_revokes); |
b3b94faa | 973 | |
a17d758b | 974 | gfs2_revoke_clean(jd); |
b3b94faa DT |
975 | } |
976 | ||
16615be1 SW |
977 | /** |
978 | * databuf_lo_before_commit - Scan the data buffers, writing as we go | |
979 | * | |
980 | */ | |
981 | ||
d69a3c65 | 982 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
16615be1 | 983 | { |
022ef4fe SW |
984 | unsigned int limit = databuf_limit(sdp); |
985 | unsigned int nbuf; | |
d69a3c65 SW |
986 | if (tr == NULL) |
987 | return; | |
022ef4fe SW |
988 | nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; |
989 | gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); | |
18ec7d5c SW |
990 | } |
991 | ||
7c70b896 | 992 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, |
18ec7d5c SW |
993 | struct gfs2_log_descriptor *ld, |
994 | __be64 *ptr, int pass) | |
995 | { | |
feaa7bba | 996 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
5c676f6d | 997 | struct gfs2_glock *gl = ip->i_gl; |
18ec7d5c SW |
998 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
999 | struct buffer_head *bh_log, *bh_ip; | |
cd915493 SW |
1000 | u64 blkno; |
1001 | u64 esc; | |
18ec7d5c SW |
1002 | int error = 0; |
1003 | ||
1004 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) | |
1005 | return 0; | |
1006 | ||
e1cb6be9 BP |
1007 | gfs2_replay_incr_blk(jd, &start); |
1008 | for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { | |
18ec7d5c SW |
1009 | blkno = be64_to_cpu(*ptr++); |
1010 | esc = be64_to_cpu(*ptr++); | |
1011 | ||
a17d758b | 1012 | jd->jd_found_blocks++; |
18ec7d5c | 1013 | |
a17d758b | 1014 | if (gfs2_revoke_check(jd, blkno, start)) |
18ec7d5c SW |
1015 | continue; |
1016 | ||
1017 | error = gfs2_replay_read_block(jd, start, &bh_log); | |
1018 | if (error) | |
1019 | return error; | |
1020 | ||
1021 | bh_ip = gfs2_meta_new(gl, blkno); | |
1022 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); | |
1023 | ||
1024 | /* Unescape */ | |
1025 | if (esc) { | |
1026 | __be32 *eptr = (__be32 *)bh_ip->b_data; | |
1027 | *eptr = cpu_to_be32(GFS2_MAGIC); | |
1028 | } | |
1029 | mark_buffer_dirty(bh_ip); | |
1030 | ||
1031 | brelse(bh_log); | |
1032 | brelse(bh_ip); | |
18ec7d5c | 1033 | |
a17d758b | 1034 | jd->jd_replayed_blocks++; |
18ec7d5c SW |
1035 | } |
1036 | ||
1037 | return error; | |
1038 | } | |
1039 | ||
1040 | /* FIXME: sort out accounting for log blocks etc. */ | |
1041 | ||
1042 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) | |
1043 | { | |
feaa7bba SW |
1044 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
1045 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
18ec7d5c SW |
1046 | |
1047 | if (error) { | |
4a55752a | 1048 | gfs2_inode_metasync(ip->i_gl); |
18ec7d5c SW |
1049 | return; |
1050 | } | |
1051 | if (pass != 1) | |
1052 | return; | |
1053 | ||
1054 | /* data sync? */ | |
4a55752a | 1055 | gfs2_inode_metasync(ip->i_gl); |
18ec7d5c SW |
1056 | |
1057 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", | |
a17d758b | 1058 | jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); |
18ec7d5c SW |
1059 | } |
1060 | ||
16ca9412 | 1061 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
18ec7d5c | 1062 | { |
d69a3c65 | 1063 | struct list_head *head; |
18ec7d5c SW |
1064 | struct gfs2_bufdata *bd; |
1065 | ||
d69a3c65 | 1066 | if (tr == NULL) |
16ca9412 | 1067 | return; |
16ca9412 | 1068 | |
d69a3c65 | 1069 | head = &tr->tr_databuf; |
18ec7d5c | 1070 | while (!list_empty(head)) { |
969183bc | 1071 | bd = list_first_entry(head, struct gfs2_bufdata, bd_list); |
c0752aa7 | 1072 | list_del_init(&bd->bd_list); |
16ca9412 | 1073 | gfs2_unpin(sdp, bd->bd_bh, tr); |
18ec7d5c | 1074 | } |
b3b94faa DT |
1075 | } |
1076 | ||
18ec7d5c | 1077 | |
32ac43f6 | 1078 | static const struct gfs2_log_operations gfs2_buf_lops = { |
b3b94faa DT |
1079 | .lo_before_commit = buf_lo_before_commit, |
1080 | .lo_after_commit = buf_lo_after_commit, | |
1081 | .lo_before_scan = buf_lo_before_scan, | |
1082 | .lo_scan_elements = buf_lo_scan_elements, | |
1083 | .lo_after_scan = buf_lo_after_scan, | |
ea67eedb | 1084 | .lo_name = "buf", |
b3b94faa DT |
1085 | }; |
1086 | ||
32ac43f6 | 1087 | static const struct gfs2_log_operations gfs2_revoke_lops = { |
b3b94faa | 1088 | .lo_before_commit = revoke_lo_before_commit, |
f42ab085 | 1089 | .lo_after_commit = revoke_lo_after_commit, |
b3b94faa DT |
1090 | .lo_before_scan = revoke_lo_before_scan, |
1091 | .lo_scan_elements = revoke_lo_scan_elements, | |
1092 | .lo_after_scan = revoke_lo_after_scan, | |
ea67eedb | 1093 | .lo_name = "revoke", |
b3b94faa DT |
1094 | }; |
1095 | ||
32ac43f6 | 1096 | static const struct gfs2_log_operations gfs2_databuf_lops = { |
b3b94faa | 1097 | .lo_before_commit = databuf_lo_before_commit, |
18ec7d5c SW |
1098 | .lo_after_commit = databuf_lo_after_commit, |
1099 | .lo_scan_elements = databuf_lo_scan_elements, | |
1100 | .lo_after_scan = databuf_lo_after_scan, | |
ea67eedb | 1101 | .lo_name = "databuf", |
b3b94faa DT |
1102 | }; |
1103 | ||
b09e593d | 1104 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
16615be1 | 1105 | &gfs2_databuf_lops, |
b3b94faa | 1106 | &gfs2_buf_lops, |
16615be1 | 1107 | &gfs2_revoke_lops, |
ea67eedb | 1108 | NULL, |
b3b94faa DT |
1109 | }; |
1110 |