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Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
127e670a JK |
3 | * fs/f2fs/checkpoint.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
127e670a JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/bio.h> | |
10 | #include <linux/mpage.h> | |
11 | #include <linux/writeback.h> | |
12 | #include <linux/blkdev.h> | |
13 | #include <linux/f2fs_fs.h> | |
14 | #include <linux/pagevec.h> | |
15 | #include <linux/swap.h> | |
261eeb9c | 16 | #include <linux/kthread.h> |
127e670a JK |
17 | |
18 | #include "f2fs.h" | |
19 | #include "node.h" | |
20 | #include "segment.h" | |
52118743 | 21 | #include "iostat.h" |
2af4bd6c | 22 | #include <trace/events/f2fs.h> |
127e670a | 23 | |
261eeb9c DJ |
24 | #define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3)) |
25 | ||
6451e041 | 26 | static struct kmem_cache *ino_entry_slab; |
4d57b86d | 27 | struct kmem_cache *f2fs_inode_entry_slab; |
127e670a | 28 | |
38f91ca8 JK |
29 | void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io) |
30 | { | |
d494500a | 31 | f2fs_build_fault_attr(sbi, 0, 0); |
aaec2b1d | 32 | set_ckpt_flags(sbi, CP_ERROR_FLAG); |
38f91ca8 | 33 | if (!end_io) |
b9109b0e | 34 | f2fs_flush_merged_writes(sbi); |
38f91ca8 JK |
35 | } |
36 | ||
0a8165d7 | 37 | /* |
127e670a JK |
38 | * We guarantee no failure on the returned page. |
39 | */ | |
4d57b86d | 40 | struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
127e670a | 41 | { |
9df27d98 | 42 | struct address_space *mapping = META_MAPPING(sbi); |
beb78181 | 43 | struct page *page; |
127e670a | 44 | repeat: |
300e129c | 45 | page = f2fs_grab_cache_page(mapping, index, false); |
127e670a JK |
46 | if (!page) { |
47 | cond_resched(); | |
48 | goto repeat; | |
49 | } | |
bae0ee7a | 50 | f2fs_wait_on_page_writeback(page, META, true, true); |
237c0790 JK |
51 | if (!PageUptodate(page)) |
52 | SetPageUptodate(page); | |
127e670a JK |
53 | return page; |
54 | } | |
55 | ||
2b947003 CY |
56 | static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index, |
57 | bool is_meta) | |
127e670a | 58 | { |
9df27d98 | 59 | struct address_space *mapping = META_MAPPING(sbi); |
127e670a | 60 | struct page *page; |
cf04e8eb | 61 | struct f2fs_io_info fio = { |
05ca3632 | 62 | .sbi = sbi, |
cf04e8eb | 63 | .type = META, |
04d328de | 64 | .op = REQ_OP_READ, |
70fd7614 | 65 | .op_flags = REQ_META | REQ_PRIO, |
7a9d7548 CY |
66 | .old_blkaddr = index, |
67 | .new_blkaddr = index, | |
4375a336 | 68 | .encrypted_page = NULL, |
6dc3a126 | 69 | .is_por = !is_meta, |
cf04e8eb | 70 | }; |
7735730d | 71 | int err; |
2b947003 CY |
72 | |
73 | if (unlikely(!is_meta)) | |
04d328de | 74 | fio.op_flags &= ~REQ_META; |
127e670a | 75 | repeat: |
300e129c | 76 | page = f2fs_grab_cache_page(mapping, index, false); |
127e670a JK |
77 | if (!page) { |
78 | cond_resched(); | |
79 | goto repeat; | |
80 | } | |
393ff91f JK |
81 | if (PageUptodate(page)) |
82 | goto out; | |
83 | ||
05ca3632 JK |
84 | fio.page = page; |
85 | ||
7735730d CY |
86 | err = f2fs_submit_page_bio(&fio); |
87 | if (err) { | |
88 | f2fs_put_page(page, 1); | |
89 | return ERR_PTR(err); | |
86531d6b | 90 | } |
127e670a | 91 | |
8b83ac81 CY |
92 | f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE); |
93 | ||
393ff91f | 94 | lock_page(page); |
6bacf52f | 95 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
96 | f2fs_put_page(page, 1); |
97 | goto repeat; | |
98 | } | |
f3f338ca | 99 | |
81114baa | 100 | if (unlikely(!PageUptodate(page))) { |
7735730d CY |
101 | f2fs_put_page(page, 1); |
102 | return ERR_PTR(-EIO); | |
81114baa | 103 | } |
393ff91f | 104 | out: |
127e670a JK |
105 | return page; |
106 | } | |
107 | ||
4d57b86d | 108 | struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index) |
2b947003 CY |
109 | { |
110 | return __get_meta_page(sbi, index, true); | |
111 | } | |
112 | ||
86f33603 | 113 | struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index) |
7735730d CY |
114 | { |
115 | struct page *page; | |
116 | int count = 0; | |
117 | ||
118 | retry: | |
119 | page = __get_meta_page(sbi, index, true); | |
120 | if (IS_ERR(page)) { | |
121 | if (PTR_ERR(page) == -EIO && | |
122 | ++count <= DEFAULT_RETRY_IO_COUNT) | |
123 | goto retry; | |
7735730d | 124 | f2fs_stop_checkpoint(sbi, false); |
7735730d | 125 | } |
7735730d CY |
126 | return page; |
127 | } | |
128 | ||
2b947003 | 129 | /* for POR only */ |
4d57b86d | 130 | struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index) |
2b947003 CY |
131 | { |
132 | return __get_meta_page(sbi, index, false); | |
133 | } | |
134 | ||
93770ab7 CY |
135 | static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr, |
136 | int type) | |
137 | { | |
138 | struct seg_entry *se; | |
139 | unsigned int segno, offset; | |
140 | bool exist; | |
141 | ||
142 | if (type != DATA_GENERIC_ENHANCE && type != DATA_GENERIC_ENHANCE_READ) | |
143 | return true; | |
144 | ||
145 | segno = GET_SEGNO(sbi, blkaddr); | |
146 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
147 | se = get_seg_entry(sbi, segno); | |
148 | ||
149 | exist = f2fs_test_bit(offset, se->cur_valid_map); | |
150 | if (!exist && type == DATA_GENERIC_ENHANCE) { | |
dcbb4c10 JP |
151 | f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d", |
152 | blkaddr, exist); | |
93770ab7 CY |
153 | set_sbi_flag(sbi, SBI_NEED_FSCK); |
154 | WARN_ON(1); | |
155 | } | |
156 | return exist; | |
157 | } | |
158 | ||
e1da7872 | 159 | bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi, |
4d57b86d | 160 | block_t blkaddr, int type) |
662befda CY |
161 | { |
162 | switch (type) { | |
163 | case META_NAT: | |
66b00c18 | 164 | break; |
662befda | 165 | case META_SIT: |
66b00c18 CY |
166 | if (unlikely(blkaddr >= SIT_BLK_CNT(sbi))) |
167 | return false; | |
168 | break; | |
81c1a0f1 | 169 | case META_SSA: |
66b00c18 CY |
170 | if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) || |
171 | blkaddr < SM_I(sbi)->ssa_blkaddr)) | |
172 | return false; | |
173 | break; | |
662befda | 174 | case META_CP: |
66b00c18 CY |
175 | if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr || |
176 | blkaddr < __start_cp_addr(sbi))) | |
177 | return false; | |
178 | break; | |
4c521f49 | 179 | case META_POR: |
93770ab7 CY |
180 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
181 | blkaddr < MAIN_BLKADDR(sbi))) | |
182 | return false; | |
183 | break; | |
e1da7872 | 184 | case DATA_GENERIC: |
93770ab7 CY |
185 | case DATA_GENERIC_ENHANCE: |
186 | case DATA_GENERIC_ENHANCE_READ: | |
66b00c18 | 187 | if (unlikely(blkaddr >= MAX_BLKADDR(sbi) || |
93770ab7 | 188 | blkaddr < MAIN_BLKADDR(sbi))) { |
dcbb4c10 JP |
189 | f2fs_warn(sbi, "access invalid blkaddr:%u", |
190 | blkaddr); | |
93770ab7 CY |
191 | set_sbi_flag(sbi, SBI_NEED_FSCK); |
192 | WARN_ON(1); | |
66b00c18 | 193 | return false; |
93770ab7 CY |
194 | } else { |
195 | return __is_bitmap_valid(sbi, blkaddr, type); | |
c9b60788 | 196 | } |
66b00c18 | 197 | break; |
e1da7872 CY |
198 | case META_GENERIC: |
199 | if (unlikely(blkaddr < SEG0_BLKADDR(sbi) || | |
200 | blkaddr >= MAIN_BLKADDR(sbi))) | |
201 | return false; | |
202 | break; | |
662befda CY |
203 | default: |
204 | BUG(); | |
205 | } | |
66b00c18 CY |
206 | |
207 | return true; | |
662befda CY |
208 | } |
209 | ||
210 | /* | |
7a88ddb5 | 211 | * Readahead CP/NAT/SIT/SSA/POR pages |
662befda | 212 | */ |
4d57b86d | 213 | int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, |
26879fb1 | 214 | int type, bool sync) |
662befda | 215 | { |
662befda | 216 | struct page *page; |
4c521f49 | 217 | block_t blkno = start; |
662befda | 218 | struct f2fs_io_info fio = { |
05ca3632 | 219 | .sbi = sbi, |
662befda | 220 | .type = META, |
04d328de | 221 | .op = REQ_OP_READ, |
70fd7614 | 222 | .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD, |
4375a336 | 223 | .encrypted_page = NULL, |
fb830fc5 | 224 | .in_list = false, |
6dc3a126 | 225 | .is_por = (type == META_POR), |
662befda | 226 | }; |
e9f5b8b8 | 227 | struct blk_plug plug; |
ce4c638c | 228 | int err; |
662befda | 229 | |
2b947003 | 230 | if (unlikely(type == META_POR)) |
04d328de | 231 | fio.op_flags &= ~REQ_META; |
2b947003 | 232 | |
e9f5b8b8 | 233 | blk_start_plug(&plug); |
662befda | 234 | for (; nrpages-- > 0; blkno++) { |
662befda | 235 | |
e1da7872 | 236 | if (!f2fs_is_valid_blkaddr(sbi, blkno, type)) |
66b00c18 CY |
237 | goto out; |
238 | ||
662befda CY |
239 | switch (type) { |
240 | case META_NAT: | |
66b00c18 CY |
241 | if (unlikely(blkno >= |
242 | NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid))) | |
662befda | 243 | blkno = 0; |
66b00c18 | 244 | /* get nat block addr */ |
7a9d7548 | 245 | fio.new_blkaddr = current_nat_addr(sbi, |
662befda CY |
246 | blkno * NAT_ENTRY_PER_BLOCK); |
247 | break; | |
248 | case META_SIT: | |
6a257471 CY |
249 | if (unlikely(blkno >= TOTAL_SEGS(sbi))) |
250 | goto out; | |
662befda | 251 | /* get sit block addr */ |
7a9d7548 | 252 | fio.new_blkaddr = current_sit_addr(sbi, |
662befda | 253 | blkno * SIT_ENTRY_PER_BLOCK); |
662befda | 254 | break; |
81c1a0f1 | 255 | case META_SSA: |
662befda | 256 | case META_CP: |
4c521f49 | 257 | case META_POR: |
7a9d7548 | 258 | fio.new_blkaddr = blkno; |
662befda CY |
259 | break; |
260 | default: | |
261 | BUG(); | |
262 | } | |
263 | ||
300e129c JK |
264 | page = f2fs_grab_cache_page(META_MAPPING(sbi), |
265 | fio.new_blkaddr, false); | |
662befda CY |
266 | if (!page) |
267 | continue; | |
268 | if (PageUptodate(page)) { | |
662befda CY |
269 | f2fs_put_page(page, 1); |
270 | continue; | |
271 | } | |
272 | ||
05ca3632 | 273 | fio.page = page; |
ce4c638c CY |
274 | err = f2fs_submit_page_bio(&fio); |
275 | f2fs_put_page(page, err ? 1 : 0); | |
8b83ac81 CY |
276 | |
277 | if (!err) | |
278 | f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE); | |
662befda CY |
279 | } |
280 | out: | |
e9f5b8b8 | 281 | blk_finish_plug(&plug); |
662befda CY |
282 | return blkno - start; |
283 | } | |
284 | ||
4d57b86d | 285 | void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index) |
635aee1f CY |
286 | { |
287 | struct page *page; | |
288 | bool readahead = false; | |
289 | ||
290 | page = find_get_page(META_MAPPING(sbi), index); | |
4da7bf5a | 291 | if (!page || !PageUptodate(page)) |
635aee1f CY |
292 | readahead = true; |
293 | f2fs_put_page(page, 0); | |
294 | ||
295 | if (readahead) | |
a8affc03 | 296 | f2fs_ra_meta_pages(sbi, index, BIO_MAX_VECS, META_POR, true); |
635aee1f CY |
297 | } |
298 | ||
b0af6d49 CY |
299 | static int __f2fs_write_meta_page(struct page *page, |
300 | struct writeback_control *wbc, | |
301 | enum iostat_type io_type) | |
127e670a | 302 | { |
4081363f | 303 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
127e670a | 304 | |
ecda0de3 CY |
305 | trace_f2fs_writepage(page, META); |
306 | ||
af697c0f JK |
307 | if (unlikely(f2fs_cp_error(sbi))) |
308 | goto redirty_out; | |
caf0047e | 309 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
cfb271d4 | 310 | goto redirty_out; |
857dc4e0 | 311 | if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0)) |
cfb271d4 | 312 | goto redirty_out; |
127e670a | 313 | |
4d57b86d | 314 | f2fs_do_write_meta_page(sbi, page, io_type); |
577e3495 | 315 | dec_page_count(sbi, F2FS_DIRTY_META); |
0c3a5797 CY |
316 | |
317 | if (wbc->for_reclaim) | |
bab475c5 | 318 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META); |
0c3a5797 | 319 | |
577e3495 | 320 | unlock_page(page); |
857dc4e0 | 321 | |
0c3a5797 | 322 | if (unlikely(f2fs_cp_error(sbi))) |
b9109b0e | 323 | f2fs_submit_merged_write(sbi, META); |
0c3a5797 | 324 | |
577e3495 | 325 | return 0; |
cfb271d4 CY |
326 | |
327 | redirty_out: | |
76f60268 | 328 | redirty_page_for_writepage(wbc, page); |
cfb271d4 | 329 | return AOP_WRITEPAGE_ACTIVATE; |
127e670a JK |
330 | } |
331 | ||
b0af6d49 CY |
332 | static int f2fs_write_meta_page(struct page *page, |
333 | struct writeback_control *wbc) | |
334 | { | |
335 | return __f2fs_write_meta_page(page, wbc, FS_META_IO); | |
336 | } | |
337 | ||
127e670a JK |
338 | static int f2fs_write_meta_pages(struct address_space *mapping, |
339 | struct writeback_control *wbc) | |
340 | { | |
4081363f | 341 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
50c8cdb3 | 342 | long diff, written; |
127e670a | 343 | |
0771fcc7 CY |
344 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
345 | goto skip_write; | |
346 | ||
5459aa97 | 347 | /* collect a number of dirty meta pages and write together */ |
812a9597 JK |
348 | if (wbc->sync_mode != WB_SYNC_ALL && |
349 | get_pages(sbi, F2FS_DIRTY_META) < | |
350 | nr_pages_to_skip(sbi, META)) | |
d3baf95d | 351 | goto skip_write; |
127e670a | 352 | |
a29d0e0b | 353 | /* if locked failed, cp will flush dirty pages instead */ |
8769918b | 354 | if (!down_write_trylock(&sbi->cp_global_sem)) |
a29d0e0b | 355 | goto skip_write; |
d31c7c3f | 356 | |
a29d0e0b | 357 | trace_f2fs_writepages(mapping->host, wbc, META); |
50c8cdb3 | 358 | diff = nr_pages_to_write(sbi, META, wbc); |
4d57b86d | 359 | written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO); |
8769918b | 360 | up_write(&sbi->cp_global_sem); |
50c8cdb3 | 361 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); |
127e670a | 362 | return 0; |
d3baf95d JK |
363 | |
364 | skip_write: | |
365 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META); | |
d31c7c3f | 366 | trace_f2fs_writepages(mapping->host, wbc, META); |
d3baf95d | 367 | return 0; |
127e670a JK |
368 | } |
369 | ||
4d57b86d | 370 | long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type, |
b0af6d49 | 371 | long nr_to_write, enum iostat_type io_type) |
127e670a | 372 | { |
9df27d98 | 373 | struct address_space *mapping = META_MAPPING(sbi); |
028a63a6 | 374 | pgoff_t index = 0, prev = ULONG_MAX; |
127e670a JK |
375 | struct pagevec pvec; |
376 | long nwritten = 0; | |
028a63a6 | 377 | int nr_pages; |
127e670a JK |
378 | struct writeback_control wbc = { |
379 | .for_reclaim = 0, | |
380 | }; | |
e9f5b8b8 | 381 | struct blk_plug plug; |
127e670a | 382 | |
86679820 | 383 | pagevec_init(&pvec); |
127e670a | 384 | |
e9f5b8b8 CY |
385 | blk_start_plug(&plug); |
386 | ||
028a63a6 | 387 | while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, |
67fd707f | 388 | PAGECACHE_TAG_DIRTY))) { |
028a63a6 | 389 | int i; |
127e670a JK |
390 | |
391 | for (i = 0; i < nr_pages; i++) { | |
392 | struct page *page = pvec.pages[i]; | |
203681f6 | 393 | |
80dd9c0e | 394 | if (prev == ULONG_MAX) |
6066d8cd JK |
395 | prev = page->index - 1; |
396 | if (nr_to_write != LONG_MAX && page->index != prev + 1) { | |
397 | pagevec_release(&pvec); | |
398 | goto stop; | |
399 | } | |
400 | ||
127e670a | 401 | lock_page(page); |
203681f6 JK |
402 | |
403 | if (unlikely(page->mapping != mapping)) { | |
404 | continue_unlock: | |
405 | unlock_page(page); | |
406 | continue; | |
407 | } | |
408 | if (!PageDirty(page)) { | |
409 | /* someone wrote it for us */ | |
410 | goto continue_unlock; | |
411 | } | |
412 | ||
bae0ee7a | 413 | f2fs_wait_on_page_writeback(page, META, true, true); |
fa3d2bdf | 414 | |
203681f6 JK |
415 | if (!clear_page_dirty_for_io(page)) |
416 | goto continue_unlock; | |
417 | ||
b0af6d49 | 418 | if (__f2fs_write_meta_page(page, &wbc, io_type)) { |
577e3495 JK |
419 | unlock_page(page); |
420 | break; | |
421 | } | |
cfb271d4 | 422 | nwritten++; |
6066d8cd | 423 | prev = page->index; |
cfb271d4 | 424 | if (unlikely(nwritten >= nr_to_write)) |
127e670a JK |
425 | break; |
426 | } | |
427 | pagevec_release(&pvec); | |
428 | cond_resched(); | |
429 | } | |
6066d8cd | 430 | stop: |
127e670a | 431 | if (nwritten) |
b9109b0e | 432 | f2fs_submit_merged_write(sbi, type); |
127e670a | 433 | |
e9f5b8b8 CY |
434 | blk_finish_plug(&plug); |
435 | ||
127e670a JK |
436 | return nwritten; |
437 | } | |
438 | ||
439 | static int f2fs_set_meta_page_dirty(struct page *page) | |
440 | { | |
26c6b887 JK |
441 | trace_f2fs_set_page_dirty(page, META); |
442 | ||
237c0790 JK |
443 | if (!PageUptodate(page)) |
444 | SetPageUptodate(page); | |
127e670a | 445 | if (!PageDirty(page)) { |
b87078ad | 446 | __set_page_dirty_nobuffers(page); |
4081363f | 447 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); |
b763f3be | 448 | set_page_private_reference(page); |
127e670a JK |
449 | return 1; |
450 | } | |
451 | return 0; | |
452 | } | |
453 | ||
454 | const struct address_space_operations f2fs_meta_aops = { | |
455 | .writepage = f2fs_write_meta_page, | |
456 | .writepages = f2fs_write_meta_pages, | |
457 | .set_page_dirty = f2fs_set_meta_page_dirty, | |
487261f3 CY |
458 | .invalidatepage = f2fs_invalidate_page, |
459 | .releasepage = f2fs_release_page, | |
5b7a487c WG |
460 | #ifdef CONFIG_MIGRATION |
461 | .migratepage = f2fs_migrate_page, | |
462 | #endif | |
127e670a JK |
463 | }; |
464 | ||
39d787be CY |
465 | static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, |
466 | unsigned int devidx, int type) | |
953e6cc6 | 467 | { |
67298804 | 468 | struct inode_management *im = &sbi->im[type]; |
4b106518 | 469 | struct ino_entry *e = NULL, *new = NULL; |
80c54505 | 470 | |
4b106518 CY |
471 | if (type == FLUSH_INO) { |
472 | rcu_read_lock(); | |
473 | e = radix_tree_lookup(&im->ino_root, ino); | |
474 | rcu_read_unlock(); | |
475 | } | |
476 | ||
477 | retry: | |
478 | if (!e) | |
32410577 CY |
479 | new = f2fs_kmem_cache_alloc(ino_entry_slab, |
480 | GFP_NOFS, true, NULL); | |
19526d74 | 481 | |
80c54505 | 482 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
769ec6e5 | 483 | |
67298804 | 484 | spin_lock(&im->ino_lock); |
67298804 | 485 | e = radix_tree_lookup(&im->ino_root, ino); |
39efac41 | 486 | if (!e) { |
4b106518 CY |
487 | if (!new) { |
488 | spin_unlock(&im->ino_lock); | |
489 | goto retry; | |
490 | } | |
491 | e = new; | |
19526d74 CY |
492 | if (unlikely(radix_tree_insert(&im->ino_root, ino, e))) |
493 | f2fs_bug_on(sbi, 1); | |
494 | ||
39efac41 JK |
495 | memset(e, 0, sizeof(struct ino_entry)); |
496 | e->ino = ino; | |
953e6cc6 | 497 | |
67298804 | 498 | list_add_tail(&e->list, &im->ino_list); |
8c402946 | 499 | if (type != ORPHAN_INO) |
67298804 | 500 | im->ino_num++; |
39efac41 | 501 | } |
39d787be CY |
502 | |
503 | if (type == FLUSH_INO) | |
504 | f2fs_set_bit(devidx, (char *)&e->dirty_device); | |
505 | ||
67298804 | 506 | spin_unlock(&im->ino_lock); |
769ec6e5 | 507 | radix_tree_preload_end(); |
80c54505 | 508 | |
4b106518 CY |
509 | if (new && e != new) |
510 | kmem_cache_free(ino_entry_slab, new); | |
953e6cc6 JK |
511 | } |
512 | ||
6451e041 | 513 | static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
953e6cc6 | 514 | { |
67298804 | 515 | struct inode_management *im = &sbi->im[type]; |
6451e041 | 516 | struct ino_entry *e; |
953e6cc6 | 517 | |
67298804 CY |
518 | spin_lock(&im->ino_lock); |
519 | e = radix_tree_lookup(&im->ino_root, ino); | |
39efac41 JK |
520 | if (e) { |
521 | list_del(&e->list); | |
67298804 CY |
522 | radix_tree_delete(&im->ino_root, ino); |
523 | im->ino_num--; | |
524 | spin_unlock(&im->ino_lock); | |
39efac41 JK |
525 | kmem_cache_free(ino_entry_slab, e); |
526 | return; | |
953e6cc6 | 527 | } |
67298804 | 528 | spin_unlock(&im->ino_lock); |
953e6cc6 JK |
529 | } |
530 | ||
4d57b86d | 531 | void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
532 | { |
533 | /* add new dirty ino entry into list */ | |
39d787be | 534 | __add_ino_entry(sbi, ino, 0, type); |
fff04f90 JK |
535 | } |
536 | ||
4d57b86d | 537 | void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type) |
fff04f90 JK |
538 | { |
539 | /* remove dirty ino entry from list */ | |
540 | __remove_ino_entry(sbi, ino, type); | |
541 | } | |
542 | ||
1f07cc58 | 543 | /* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */ |
4d57b86d | 544 | bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) |
fff04f90 | 545 | { |
67298804 | 546 | struct inode_management *im = &sbi->im[mode]; |
fff04f90 | 547 | struct ino_entry *e; |
67298804 CY |
548 | |
549 | spin_lock(&im->ino_lock); | |
550 | e = radix_tree_lookup(&im->ino_root, ino); | |
551 | spin_unlock(&im->ino_lock); | |
fff04f90 JK |
552 | return e ? true : false; |
553 | } | |
554 | ||
4d57b86d | 555 | void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all) |
fff04f90 JK |
556 | { |
557 | struct ino_entry *e, *tmp; | |
558 | int i; | |
559 | ||
39d787be | 560 | for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) { |
67298804 CY |
561 | struct inode_management *im = &sbi->im[i]; |
562 | ||
563 | spin_lock(&im->ino_lock); | |
564 | list_for_each_entry_safe(e, tmp, &im->ino_list, list) { | |
fff04f90 | 565 | list_del(&e->list); |
67298804 | 566 | radix_tree_delete(&im->ino_root, e->ino); |
fff04f90 | 567 | kmem_cache_free(ino_entry_slab, e); |
67298804 | 568 | im->ino_num--; |
fff04f90 | 569 | } |
67298804 | 570 | spin_unlock(&im->ino_lock); |
fff04f90 JK |
571 | } |
572 | } | |
573 | ||
4d57b86d | 574 | void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, |
39d787be CY |
575 | unsigned int devidx, int type) |
576 | { | |
577 | __add_ino_entry(sbi, ino, devidx, type); | |
578 | } | |
579 | ||
4d57b86d | 580 | bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino, |
39d787be CY |
581 | unsigned int devidx, int type) |
582 | { | |
583 | struct inode_management *im = &sbi->im[type]; | |
584 | struct ino_entry *e; | |
585 | bool is_dirty = false; | |
586 | ||
587 | spin_lock(&im->ino_lock); | |
588 | e = radix_tree_lookup(&im->ino_root, ino); | |
589 | if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device)) | |
590 | is_dirty = true; | |
591 | spin_unlock(&im->ino_lock); | |
592 | return is_dirty; | |
593 | } | |
594 | ||
4d57b86d | 595 | int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi) |
127e670a | 596 | { |
67298804 | 597 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a JK |
598 | int err = 0; |
599 | ||
67298804 | 600 | spin_lock(&im->ino_lock); |
cb78942b | 601 | |
1ecc0c5c | 602 | if (time_to_inject(sbi, FAULT_ORPHAN)) { |
cb78942b | 603 | spin_unlock(&im->ino_lock); |
c45d6002 | 604 | f2fs_show_injection_info(sbi, FAULT_ORPHAN); |
cb78942b JK |
605 | return -ENOSPC; |
606 | } | |
7fa750a1 | 607 | |
67298804 | 608 | if (unlikely(im->ino_num >= sbi->max_orphans)) |
127e670a | 609 | err = -ENOSPC; |
cbd56e7d | 610 | else |
67298804 CY |
611 | im->ino_num++; |
612 | spin_unlock(&im->ino_lock); | |
0d47c1ad | 613 | |
127e670a JK |
614 | return err; |
615 | } | |
616 | ||
4d57b86d | 617 | void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi) |
cbd56e7d | 618 | { |
67298804 CY |
619 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
620 | ||
621 | spin_lock(&im->ino_lock); | |
622 | f2fs_bug_on(sbi, im->ino_num == 0); | |
623 | im->ino_num--; | |
624 | spin_unlock(&im->ino_lock); | |
cbd56e7d JK |
625 | } |
626 | ||
4d57b86d | 627 | void f2fs_add_orphan_inode(struct inode *inode) |
127e670a | 628 | { |
39efac41 | 629 | /* add new orphan ino entry into list */ |
39d787be | 630 | __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO); |
4d57b86d | 631 | f2fs_update_inode_page(inode); |
127e670a JK |
632 | } |
633 | ||
4d57b86d | 634 | void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
127e670a | 635 | { |
953e6cc6 | 636 | /* remove orphan entry from orphan list */ |
6451e041 | 637 | __remove_ino_entry(sbi, ino, ORPHAN_INO); |
127e670a JK |
638 | } |
639 | ||
8c14bfad | 640 | static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) |
127e670a | 641 | { |
8c14bfad | 642 | struct inode *inode; |
5905f9af | 643 | struct node_info ni; |
76a45e3c | 644 | int err; |
8c14bfad | 645 | |
5905f9af | 646 | inode = f2fs_iget_retry(sbi->sb, ino); |
8c14bfad CY |
647 | if (IS_ERR(inode)) { |
648 | /* | |
649 | * there should be a bug that we can't find the entry | |
650 | * to orphan inode. | |
651 | */ | |
652 | f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT); | |
653 | return PTR_ERR(inode); | |
654 | } | |
655 | ||
0f9ec2a8 | 656 | err = dquot_initialize(inode); |
a515d12f SY |
657 | if (err) { |
658 | iput(inode); | |
0f9ec2a8 | 659 | goto err_out; |
a515d12f | 660 | } |
0f9ec2a8 | 661 | |
127e670a JK |
662 | clear_nlink(inode); |
663 | ||
664 | /* truncate all the data during iput */ | |
665 | iput(inode); | |
5905f9af | 666 | |
7735730d CY |
667 | err = f2fs_get_node_info(sbi, ino, &ni); |
668 | if (err) | |
669 | goto err_out; | |
5905f9af JK |
670 | |
671 | /* ENOMEM was fully retried in f2fs_evict_inode. */ | |
672 | if (ni.blk_addr != NULL_ADDR) { | |
0f9ec2a8 JK |
673 | err = -EIO; |
674 | goto err_out; | |
5905f9af | 675 | } |
8c14bfad | 676 | return 0; |
0f9ec2a8 JK |
677 | |
678 | err_out: | |
679 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
dcbb4c10 JP |
680 | f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.", |
681 | __func__, ino); | |
0f9ec2a8 | 682 | return err; |
127e670a JK |
683 | } |
684 | ||
4d57b86d | 685 | int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi) |
127e670a | 686 | { |
3c642985 | 687 | block_t start_blk, orphan_blocks, i, j; |
4b2414d0 CY |
688 | unsigned int s_flags = sbi->sb->s_flags; |
689 | int err = 0; | |
ea676733 JK |
690 | #ifdef CONFIG_QUOTA |
691 | int quota_enabled; | |
692 | #endif | |
127e670a | 693 | |
aaec2b1d | 694 | if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG)) |
8c14bfad | 695 | return 0; |
127e670a | 696 | |
b61af314 | 697 | if (bdev_read_only(sbi->sb->s_bdev)) { |
dcbb4c10 | 698 | f2fs_info(sbi, "write access unavailable, skipping orphan cleanup"); |
b61af314 CY |
699 | return 0; |
700 | } | |
701 | ||
1751e8a6 | 702 | if (s_flags & SB_RDONLY) { |
dcbb4c10 | 703 | f2fs_info(sbi, "orphan cleanup on readonly fs"); |
1751e8a6 | 704 | sbi->sb->s_flags &= ~SB_RDONLY; |
4b2414d0 CY |
705 | } |
706 | ||
707 | #ifdef CONFIG_QUOTA | |
708 | /* Needed for iput() to work correctly and not trash data */ | |
1751e8a6 | 709 | sbi->sb->s_flags |= SB_ACTIVE; |
ea676733 | 710 | |
76cf05d7 SY |
711 | /* |
712 | * Turn on quotas which were not enabled for read-only mounts if | |
713 | * filesystem has quota feature, so that they are updated correctly. | |
714 | */ | |
1751e8a6 | 715 | quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY); |
4b2414d0 CY |
716 | #endif |
717 | ||
55141486 | 718 | start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi); |
3c642985 | 719 | orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi); |
127e670a | 720 | |
4d57b86d | 721 | f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true); |
662befda | 722 | |
3c642985 | 723 | for (i = 0; i < orphan_blocks; i++) { |
7735730d | 724 | struct page *page; |
127e670a JK |
725 | struct f2fs_orphan_block *orphan_blk; |
726 | ||
7735730d CY |
727 | page = f2fs_get_meta_page(sbi, start_blk + i); |
728 | if (IS_ERR(page)) { | |
729 | err = PTR_ERR(page); | |
730 | goto out; | |
731 | } | |
732 | ||
127e670a JK |
733 | orphan_blk = (struct f2fs_orphan_block *)page_address(page); |
734 | for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) { | |
735 | nid_t ino = le32_to_cpu(orphan_blk->ino[j]); | |
5f029c04 | 736 | |
8c14bfad CY |
737 | err = recover_orphan_inode(sbi, ino); |
738 | if (err) { | |
739 | f2fs_put_page(page, 1); | |
4b2414d0 | 740 | goto out; |
8c14bfad | 741 | } |
127e670a JK |
742 | } |
743 | f2fs_put_page(page, 1); | |
744 | } | |
745 | /* clear Orphan Flag */ | |
aaec2b1d | 746 | clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG); |
4b2414d0 | 747 | out: |
1378752b CY |
748 | set_sbi_flag(sbi, SBI_IS_RECOVERED); |
749 | ||
4b2414d0 CY |
750 | #ifdef CONFIG_QUOTA |
751 | /* Turn quotas off */ | |
ea676733 JK |
752 | if (quota_enabled) |
753 | f2fs_quota_off_umount(sbi->sb); | |
4b2414d0 | 754 | #endif |
1751e8a6 | 755 | sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */ |
4b2414d0 CY |
756 | |
757 | return err; | |
127e670a JK |
758 | } |
759 | ||
760 | static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) | |
761 | { | |
502c6e0b | 762 | struct list_head *head; |
127e670a | 763 | struct f2fs_orphan_block *orphan_blk = NULL; |
127e670a | 764 | unsigned int nentries = 0; |
bd936f84 | 765 | unsigned short index = 1; |
8c402946 | 766 | unsigned short orphan_blocks; |
4531929e | 767 | struct page *page = NULL; |
6451e041 | 768 | struct ino_entry *orphan = NULL; |
67298804 | 769 | struct inode_management *im = &sbi->im[ORPHAN_INO]; |
127e670a | 770 | |
67298804 | 771 | orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num); |
8c402946 | 772 | |
d6c67a4f JK |
773 | /* |
774 | * we don't need to do spin_lock(&im->ino_lock) here, since all the | |
775 | * orphan inode operations are covered under f2fs_lock_op(). | |
776 | * And, spin_lock should be avoided due to page operations below. | |
777 | */ | |
67298804 | 778 | head = &im->ino_list; |
127e670a JK |
779 | |
780 | /* loop for each orphan inode entry and write them in Jornal block */ | |
502c6e0b GZ |
781 | list_for_each_entry(orphan, head, list) { |
782 | if (!page) { | |
4d57b86d | 783 | page = f2fs_grab_meta_page(sbi, start_blk++); |
502c6e0b GZ |
784 | orphan_blk = |
785 | (struct f2fs_orphan_block *)page_address(page); | |
786 | memset(orphan_blk, 0, sizeof(*orphan_blk)); | |
787 | } | |
127e670a | 788 | |
36795567 | 789 | orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino); |
127e670a | 790 | |
36795567 | 791 | if (nentries == F2FS_ORPHANS_PER_BLOCK) { |
127e670a JK |
792 | /* |
793 | * an orphan block is full of 1020 entries, | |
794 | * then we need to flush current orphan blocks | |
795 | * and bring another one in memory | |
796 | */ | |
797 | orphan_blk->blk_addr = cpu_to_le16(index); | |
798 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
799 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
800 | set_page_dirty(page); | |
801 | f2fs_put_page(page, 1); | |
802 | index++; | |
127e670a JK |
803 | nentries = 0; |
804 | page = NULL; | |
805 | } | |
502c6e0b | 806 | } |
127e670a | 807 | |
502c6e0b GZ |
808 | if (page) { |
809 | orphan_blk->blk_addr = cpu_to_le16(index); | |
810 | orphan_blk->blk_count = cpu_to_le16(orphan_blocks); | |
811 | orphan_blk->entry_count = cpu_to_le32(nentries); | |
812 | set_page_dirty(page); | |
813 | f2fs_put_page(page, 1); | |
127e670a | 814 | } |
127e670a JK |
815 | } |
816 | ||
d7eb8f1c CY |
817 | static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi, |
818 | struct f2fs_checkpoint *ckpt) | |
819 | { | |
820 | unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset); | |
821 | __u32 chksum; | |
822 | ||
823 | chksum = f2fs_crc32(sbi, ckpt, chksum_ofs); | |
824 | if (chksum_ofs < CP_CHKSUM_OFFSET) { | |
825 | chksum_ofs += sizeof(chksum); | |
826 | chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs, | |
827 | F2FS_BLKSIZE - chksum_ofs); | |
828 | } | |
829 | return chksum; | |
830 | } | |
831 | ||
fc0065ad TY |
832 | static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr, |
833 | struct f2fs_checkpoint **cp_block, struct page **cp_page, | |
834 | unsigned long long *version) | |
127e670a | 835 | { |
fc0065ad | 836 | size_t crc_offset = 0; |
d7eb8f1c | 837 | __u32 crc; |
127e670a | 838 | |
4d57b86d | 839 | *cp_page = f2fs_get_meta_page(sbi, cp_addr); |
7735730d CY |
840 | if (IS_ERR(*cp_page)) |
841 | return PTR_ERR(*cp_page); | |
842 | ||
fc0065ad | 843 | *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page); |
127e670a | 844 | |
fc0065ad | 845 | crc_offset = le32_to_cpu((*cp_block)->checksum_offset); |
d7eb8f1c CY |
846 | if (crc_offset < CP_MIN_CHKSUM_OFFSET || |
847 | crc_offset > CP_CHKSUM_OFFSET) { | |
d3f07c04 | 848 | f2fs_put_page(*cp_page, 1); |
dcbb4c10 | 849 | f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset); |
fc0065ad TY |
850 | return -EINVAL; |
851 | } | |
127e670a | 852 | |
d7eb8f1c CY |
853 | crc = f2fs_checkpoint_chksum(sbi, *cp_block); |
854 | if (crc != cur_cp_crc(*cp_block)) { | |
d3f07c04 | 855 | f2fs_put_page(*cp_page, 1); |
dcbb4c10 | 856 | f2fs_warn(sbi, "invalid crc value"); |
fc0065ad TY |
857 | return -EINVAL; |
858 | } | |
127e670a | 859 | |
fc0065ad TY |
860 | *version = cur_cp_version(*cp_block); |
861 | return 0; | |
862 | } | |
127e670a | 863 | |
fc0065ad TY |
864 | static struct page *validate_checkpoint(struct f2fs_sb_info *sbi, |
865 | block_t cp_addr, unsigned long long *version) | |
866 | { | |
867 | struct page *cp_page_1 = NULL, *cp_page_2 = NULL; | |
868 | struct f2fs_checkpoint *cp_block = NULL; | |
869 | unsigned long long cur_version = 0, pre_version = 0; | |
870 | int err; | |
127e670a | 871 | |
fc0065ad TY |
872 | err = get_checkpoint_version(sbi, cp_addr, &cp_block, |
873 | &cp_page_1, version); | |
874 | if (err) | |
d3f07c04 | 875 | return NULL; |
c9b60788 CY |
876 | |
877 | if (le32_to_cpu(cp_block->cp_pack_total_block_count) > | |
878 | sbi->blocks_per_seg) { | |
dcbb4c10 JP |
879 | f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u", |
880 | le32_to_cpu(cp_block->cp_pack_total_block_count)); | |
d3f07c04 | 881 | goto invalid_cp; |
c9b60788 | 882 | } |
fc0065ad | 883 | pre_version = *version; |
127e670a | 884 | |
fc0065ad TY |
885 | cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1; |
886 | err = get_checkpoint_version(sbi, cp_addr, &cp_block, | |
887 | &cp_page_2, version); | |
888 | if (err) | |
d3f07c04 | 889 | goto invalid_cp; |
fc0065ad | 890 | cur_version = *version; |
127e670a JK |
891 | |
892 | if (cur_version == pre_version) { | |
893 | *version = cur_version; | |
894 | f2fs_put_page(cp_page_2, 1); | |
895 | return cp_page_1; | |
896 | } | |
127e670a | 897 | f2fs_put_page(cp_page_2, 1); |
d3f07c04 | 898 | invalid_cp: |
127e670a JK |
899 | f2fs_put_page(cp_page_1, 1); |
900 | return NULL; | |
901 | } | |
902 | ||
4d57b86d | 903 | int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi) |
127e670a JK |
904 | { |
905 | struct f2fs_checkpoint *cp_block; | |
906 | struct f2fs_super_block *fsb = sbi->raw_super; | |
907 | struct page *cp1, *cp2, *cur_page; | |
908 | unsigned long blk_size = sbi->blocksize; | |
909 | unsigned long long cp1_version = 0, cp2_version = 0; | |
910 | unsigned long long cp_start_blk_no; | |
55141486 | 911 | unsigned int cp_blks = 1 + __cp_payload(sbi); |
1dbe4152 CL |
912 | block_t cp_blk_no; |
913 | int i; | |
10f966bb | 914 | int err; |
127e670a | 915 | |
0b6d4ca0 EB |
916 | sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks), |
917 | GFP_KERNEL); | |
127e670a JK |
918 | if (!sbi->ckpt) |
919 | return -ENOMEM; | |
920 | /* | |
921 | * Finding out valid cp block involves read both | |
7a88ddb5 | 922 | * sets( cp pack 1 and cp pack 2) |
127e670a JK |
923 | */ |
924 | cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
925 | cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version); | |
926 | ||
927 | /* The second checkpoint pack should start at the next segment */ | |
f9a4e6df JK |
928 | cp_start_blk_no += ((unsigned long long)1) << |
929 | le32_to_cpu(fsb->log_blocks_per_seg); | |
127e670a JK |
930 | cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version); |
931 | ||
932 | if (cp1 && cp2) { | |
933 | if (ver_after(cp2_version, cp1_version)) | |
934 | cur_page = cp2; | |
935 | else | |
936 | cur_page = cp1; | |
937 | } else if (cp1) { | |
938 | cur_page = cp1; | |
939 | } else if (cp2) { | |
940 | cur_page = cp2; | |
941 | } else { | |
10f966bb | 942 | err = -EFSCORRUPTED; |
127e670a JK |
943 | goto fail_no_cp; |
944 | } | |
945 | ||
946 | cp_block = (struct f2fs_checkpoint *)page_address(cur_page); | |
947 | memcpy(sbi->ckpt, cp_block, blk_size); | |
948 | ||
8508e44a JK |
949 | if (cur_page == cp1) |
950 | sbi->cur_cp_pack = 1; | |
951 | else | |
952 | sbi->cur_cp_pack = 2; | |
984ec63c | 953 | |
e494c2f9 | 954 | /* Sanity checking of checkpoint */ |
10f966bb CY |
955 | if (f2fs_sanity_check_ckpt(sbi)) { |
956 | err = -EFSCORRUPTED; | |
e494c2f9 | 957 | goto free_fail_no_cp; |
10f966bb | 958 | } |
e494c2f9 | 959 | |
1dbe4152 CL |
960 | if (cp_blks <= 1) |
961 | goto done; | |
962 | ||
963 | cp_blk_no = le32_to_cpu(fsb->cp_blkaddr); | |
964 | if (cur_page == cp2) | |
965 | cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg); | |
966 | ||
967 | for (i = 1; i < cp_blks; i++) { | |
968 | void *sit_bitmap_ptr; | |
969 | unsigned char *ckpt = (unsigned char *)sbi->ckpt; | |
970 | ||
4d57b86d | 971 | cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i); |
10f966bb CY |
972 | if (IS_ERR(cur_page)) { |
973 | err = PTR_ERR(cur_page); | |
7735730d | 974 | goto free_fail_no_cp; |
10f966bb | 975 | } |
1dbe4152 CL |
976 | sit_bitmap_ptr = page_address(cur_page); |
977 | memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size); | |
978 | f2fs_put_page(cur_page, 1); | |
979 | } | |
980 | done: | |
127e670a JK |
981 | f2fs_put_page(cp1, 1); |
982 | f2fs_put_page(cp2, 1); | |
983 | return 0; | |
984 | ||
a2125ff7 JK |
985 | free_fail_no_cp: |
986 | f2fs_put_page(cp1, 1); | |
987 | f2fs_put_page(cp2, 1); | |
127e670a | 988 | fail_no_cp: |
5222595d | 989 | kvfree(sbi->ckpt); |
10f966bb | 990 | return err; |
127e670a JK |
991 | } |
992 | ||
c227f912 | 993 | static void __add_dirty_inode(struct inode *inode, enum inode_type type) |
127e670a | 994 | { |
4081363f | 995 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 996 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
127e670a | 997 | |
91942321 | 998 | if (is_inode_flag_set(inode, flag)) |
2710fd7e | 999 | return; |
2d7b822a | 1000 | |
91942321 | 1001 | set_inode_flag(inode, flag); |
99f4b917 CY |
1002 | if (!f2fs_is_volatile_file(inode)) |
1003 | list_add_tail(&F2FS_I(inode)->dirty_list, | |
1004 | &sbi->inode_list[type]); | |
33fbd510 | 1005 | stat_inc_dirty_inode(sbi, type); |
5deb8267 JK |
1006 | } |
1007 | ||
c227f912 | 1008 | static void __remove_dirty_inode(struct inode *inode, enum inode_type type) |
6ad7609a | 1009 | { |
c227f912 | 1010 | int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; |
6ad7609a | 1011 | |
91942321 | 1012 | if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag)) |
6ad7609a CY |
1013 | return; |
1014 | ||
91942321 JK |
1015 | list_del_init(&F2FS_I(inode)->dirty_list); |
1016 | clear_inode_flag(inode, flag); | |
33fbd510 | 1017 | stat_dec_dirty_inode(F2FS_I_SB(inode), type); |
6ad7609a CY |
1018 | } |
1019 | ||
4d57b86d | 1020 | void f2fs_update_dirty_page(struct inode *inode, struct page *page) |
5deb8267 | 1021 | { |
4081363f | 1022 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 1023 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
5deb8267 | 1024 | |
5ac9f36f CY |
1025 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
1026 | !S_ISLNK(inode->i_mode)) | |
127e670a | 1027 | return; |
7bd59381 | 1028 | |
1c4bf763 JK |
1029 | spin_lock(&sbi->inode_lock[type]); |
1030 | if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) | |
10aa97c3 | 1031 | __add_dirty_inode(inode, type); |
b951a4ec | 1032 | inode_inc_dirty_pages(inode); |
1c4bf763 JK |
1033 | spin_unlock(&sbi->inode_lock[type]); |
1034 | ||
b763f3be | 1035 | set_page_private_reference(page); |
5deb8267 JK |
1036 | } |
1037 | ||
4d57b86d | 1038 | void f2fs_remove_dirty_inode(struct inode *inode) |
127e670a | 1039 | { |
4081363f | 1040 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c227f912 | 1041 | enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE; |
127e670a | 1042 | |
c227f912 CY |
1043 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
1044 | !S_ISLNK(inode->i_mode)) | |
127e670a JK |
1045 | return; |
1046 | ||
10aa97c3 JK |
1047 | if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH)) |
1048 | return; | |
1049 | ||
c227f912 CY |
1050 | spin_lock(&sbi->inode_lock[type]); |
1051 | __remove_dirty_inode(inode, type); | |
1052 | spin_unlock(&sbi->inode_lock[type]); | |
74d0b917 JK |
1053 | } |
1054 | ||
4d57b86d | 1055 | int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type) |
127e670a | 1056 | { |
ce3b7d80 | 1057 | struct list_head *head; |
127e670a | 1058 | struct inode *inode; |
2710fd7e | 1059 | struct f2fs_inode_info *fi; |
4cf18537 | 1060 | bool is_dir = (type == DIR_INODE); |
4db08d01 | 1061 | unsigned long ino = 0; |
4cf18537 CY |
1062 | |
1063 | trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir, | |
1064 | get_pages(sbi, is_dir ? | |
1065 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
127e670a | 1066 | retry: |
9b664822 ZQ |
1067 | if (unlikely(f2fs_cp_error(sbi))) { |
1068 | trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, | |
1069 | get_pages(sbi, is_dir ? | |
1070 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
6d5a1495 | 1071 | return -EIO; |
9b664822 | 1072 | } |
af41d3ee | 1073 | |
c227f912 | 1074 | spin_lock(&sbi->inode_lock[type]); |
ce3b7d80 | 1075 | |
c227f912 | 1076 | head = &sbi->inode_list[type]; |
127e670a | 1077 | if (list_empty(head)) { |
c227f912 | 1078 | spin_unlock(&sbi->inode_lock[type]); |
4cf18537 CY |
1079 | trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir, |
1080 | get_pages(sbi, is_dir ? | |
1081 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA)); | |
6d5a1495 | 1082 | return 0; |
127e670a | 1083 | } |
939afa94 | 1084 | fi = list_first_entry(head, struct f2fs_inode_info, dirty_list); |
2710fd7e | 1085 | inode = igrab(&fi->vfs_inode); |
c227f912 | 1086 | spin_unlock(&sbi->inode_lock[type]); |
127e670a | 1087 | if (inode) { |
4db08d01 JK |
1088 | unsigned long cur_ino = inode->i_ino; |
1089 | ||
186857c5 | 1090 | F2FS_I(inode)->cp_task = current; |
b0af6d49 | 1091 | |
87d6f890 | 1092 | filemap_fdatawrite(inode->i_mapping); |
b0af6d49 | 1093 | |
186857c5 | 1094 | F2FS_I(inode)->cp_task = NULL; |
b0af6d49 | 1095 | |
127e670a | 1096 | iput(inode); |
4db08d01 | 1097 | /* We need to give cpu to another writers. */ |
2a63531a | 1098 | if (ino == cur_ino) |
4db08d01 | 1099 | cond_resched(); |
2a63531a | 1100 | else |
4db08d01 | 1101 | ino = cur_ino; |
127e670a JK |
1102 | } else { |
1103 | /* | |
1104 | * We should submit bio, since it exists several | |
1105 | * wribacking dentry pages in the freeing inode. | |
1106 | */ | |
b9109b0e | 1107 | f2fs_submit_merged_write(sbi, DATA); |
7ecebe5e | 1108 | cond_resched(); |
127e670a JK |
1109 | } |
1110 | goto retry; | |
1111 | } | |
1112 | ||
0f18b462 JK |
1113 | int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi) |
1114 | { | |
1115 | struct list_head *head = &sbi->inode_list[DIRTY_META]; | |
1116 | struct inode *inode; | |
1117 | struct f2fs_inode_info *fi; | |
1118 | s64 total = get_pages(sbi, F2FS_DIRTY_IMETA); | |
1119 | ||
1120 | while (total--) { | |
1121 | if (unlikely(f2fs_cp_error(sbi))) | |
1122 | return -EIO; | |
1123 | ||
1124 | spin_lock(&sbi->inode_lock[DIRTY_META]); | |
1125 | if (list_empty(head)) { | |
1126 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
1127 | return 0; | |
1128 | } | |
939afa94 | 1129 | fi = list_first_entry(head, struct f2fs_inode_info, |
0f18b462 JK |
1130 | gdirty_list); |
1131 | inode = igrab(&fi->vfs_inode); | |
1132 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
1133 | if (inode) { | |
18340edc JK |
1134 | sync_inode_metadata(inode, 0); |
1135 | ||
1136 | /* it's on eviction */ | |
1137 | if (is_inode_flag_set(inode, FI_DIRTY_INODE)) | |
4d57b86d | 1138 | f2fs_update_inode_page(inode); |
0f18b462 JK |
1139 | iput(inode); |
1140 | } | |
dee668c1 | 1141 | } |
0f18b462 JK |
1142 | return 0; |
1143 | } | |
1144 | ||
59c9081b YH |
1145 | static void __prepare_cp_block(struct f2fs_sb_info *sbi) |
1146 | { | |
1147 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1148 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
1149 | nid_t last_nid = nm_i->next_scan_nid; | |
1150 | ||
1151 | next_free_nid(sbi, &last_nid); | |
1152 | ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); | |
1153 | ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi)); | |
1154 | ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi)); | |
1155 | ckpt->next_free_nid = cpu_to_le32(last_nid); | |
1156 | } | |
1157 | ||
af033b2a CY |
1158 | static bool __need_flush_quota(struct f2fs_sb_info *sbi) |
1159 | { | |
db6ec53b JK |
1160 | bool ret = false; |
1161 | ||
af033b2a CY |
1162 | if (!is_journalled_quota(sbi)) |
1163 | return false; | |
db6ec53b JK |
1164 | |
1165 | down_write(&sbi->quota_sem); | |
1166 | if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) { | |
1167 | ret = false; | |
1168 | } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) { | |
1169 | ret = false; | |
1170 | } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) { | |
1171 | clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); | |
1172 | ret = true; | |
1173 | } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) { | |
1174 | ret = true; | |
1175 | } | |
1176 | up_write(&sbi->quota_sem); | |
1177 | return ret; | |
af033b2a CY |
1178 | } |
1179 | ||
0a8165d7 | 1180 | /* |
127e670a JK |
1181 | * Freeze all the FS-operations for checkpoint. |
1182 | */ | |
cf779cab | 1183 | static int block_operations(struct f2fs_sb_info *sbi) |
127e670a | 1184 | { |
127e670a JK |
1185 | struct writeback_control wbc = { |
1186 | .sync_mode = WB_SYNC_ALL, | |
1187 | .nr_to_write = LONG_MAX, | |
1188 | .for_reclaim = 0, | |
1189 | }; | |
af033b2a | 1190 | int err = 0, cnt = 0; |
c718379b | 1191 | |
34c061ad SL |
1192 | /* |
1193 | * Let's flush inline_data in dirty node pages. | |
1194 | */ | |
1195 | f2fs_flush_inline_data(sbi); | |
1196 | ||
af033b2a | 1197 | retry_flush_quotas: |
db6ec53b | 1198 | f2fs_lock_all(sbi); |
af033b2a CY |
1199 | if (__need_flush_quota(sbi)) { |
1200 | int locked; | |
1201 | ||
1202 | if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) { | |
1203 | set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); | |
db6ec53b | 1204 | set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH); |
af033b2a CY |
1205 | goto retry_flush_dents; |
1206 | } | |
db6ec53b | 1207 | f2fs_unlock_all(sbi); |
af033b2a CY |
1208 | |
1209 | /* only failed during mount/umount/freeze/quotactl */ | |
1210 | locked = down_read_trylock(&sbi->sb->s_umount); | |
1211 | f2fs_quota_sync(sbi->sb, -1); | |
1212 | if (locked) | |
1213 | up_read(&sbi->sb->s_umount); | |
af033b2a CY |
1214 | cond_resched(); |
1215 | goto retry_flush_quotas; | |
1216 | } | |
1217 | ||
1218 | retry_flush_dents: | |
127e670a | 1219 | /* write all the dirty dentry pages */ |
127e670a | 1220 | if (get_pages(sbi, F2FS_DIRTY_DENTS)) { |
e479556b | 1221 | f2fs_unlock_all(sbi); |
4d57b86d | 1222 | err = f2fs_sync_dirty_inodes(sbi, DIR_INODE); |
6d5a1495 | 1223 | if (err) |
1f5f11a3 | 1224 | return err; |
30973883 | 1225 | cond_resched(); |
af033b2a | 1226 | goto retry_flush_quotas; |
127e670a JK |
1227 | } |
1228 | ||
59c9081b YH |
1229 | /* |
1230 | * POR: we should ensure that there are no dirty node pages | |
1231 | * until finishing nat/sit flush. inode->i_blocks can be updated. | |
1232 | */ | |
1233 | down_write(&sbi->node_change); | |
1234 | ||
0f18b462 | 1235 | if (get_pages(sbi, F2FS_DIRTY_IMETA)) { |
59c9081b | 1236 | up_write(&sbi->node_change); |
0f18b462 JK |
1237 | f2fs_unlock_all(sbi); |
1238 | err = f2fs_sync_inode_meta(sbi); | |
1239 | if (err) | |
1f5f11a3 | 1240 | return err; |
30973883 | 1241 | cond_resched(); |
af033b2a | 1242 | goto retry_flush_quotas; |
0f18b462 JK |
1243 | } |
1244 | ||
39936837 | 1245 | retry_flush_nodes: |
b3582c68 | 1246 | down_write(&sbi->node_write); |
127e670a JK |
1247 | |
1248 | if (get_pages(sbi, F2FS_DIRTY_NODES)) { | |
b3582c68 | 1249 | up_write(&sbi->node_write); |
c29fd0c0 | 1250 | atomic_inc(&sbi->wb_sync_req[NODE]); |
4d57b86d | 1251 | err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO); |
c29fd0c0 | 1252 | atomic_dec(&sbi->wb_sync_req[NODE]); |
6d5a1495 | 1253 | if (err) { |
59c9081b | 1254 | up_write(&sbi->node_change); |
cf779cab | 1255 | f2fs_unlock_all(sbi); |
1f5f11a3 | 1256 | return err; |
cf779cab | 1257 | } |
30973883 | 1258 | cond_resched(); |
39936837 | 1259 | goto retry_flush_nodes; |
127e670a | 1260 | } |
59c9081b YH |
1261 | |
1262 | /* | |
1263 | * sbi->node_change is used only for AIO write_begin path which produces | |
1264 | * dirty node blocks and some checkpoint values by block allocation. | |
1265 | */ | |
1266 | __prepare_cp_block(sbi); | |
1267 | up_write(&sbi->node_change); | |
cf779cab | 1268 | return err; |
127e670a JK |
1269 | } |
1270 | ||
1271 | static void unblock_operations(struct f2fs_sb_info *sbi) | |
1272 | { | |
b3582c68 | 1273 | up_write(&sbi->node_write); |
e479556b | 1274 | f2fs_unlock_all(sbi); |
127e670a JK |
1275 | } |
1276 | ||
bf22c3cc | 1277 | void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type) |
fb51b5ef CL |
1278 | { |
1279 | DEFINE_WAIT(wait); | |
1280 | ||
1281 | for (;;) { | |
bf22c3cc | 1282 | if (!get_pages(sbi, type)) |
fb51b5ef CL |
1283 | break; |
1284 | ||
af697c0f JK |
1285 | if (unlikely(f2fs_cp_error(sbi))) |
1286 | break; | |
1287 | ||
9c30df7c JK |
1288 | if (type == F2FS_DIRTY_META) |
1289 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, | |
1290 | FS_CP_META_IO); | |
1fd28018 JK |
1291 | else if (type == F2FS_WB_CP_DATA) |
1292 | f2fs_submit_merged_write(sbi, DATA); | |
828add77 JK |
1293 | |
1294 | prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE); | |
5df7731f | 1295 | io_schedule_timeout(DEFAULT_IO_TIMEOUT); |
fb51b5ef CL |
1296 | } |
1297 | finish_wait(&sbi->cp_wait, &wait); | |
1298 | } | |
1299 | ||
e4c5d848 JK |
1300 | static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
1301 | { | |
1302 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num; | |
1303 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
d1aa2453 | 1304 | unsigned long flags; |
e4c5d848 | 1305 | |
94c821fb CY |
1306 | if (cpc->reason & CP_UMOUNT) { |
1307 | if (le32_to_cpu(ckpt->cp_pack_total_block_count) > | |
1308 | sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks) { | |
1309 | clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG); | |
1310 | f2fs_notice(sbi, "Disable nat_bits due to no space"); | |
1311 | } else if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG) && | |
1312 | f2fs_nat_bitmap_enabled(sbi)) { | |
1313 | f2fs_enable_nat_bits(sbi); | |
1314 | set_ckpt_flags(sbi, CP_NAT_BITS_FLAG); | |
1315 | f2fs_notice(sbi, "Rebuild and enable nat_bits"); | |
1316 | } | |
1317 | } | |
e4c5d848 | 1318 | |
94c821fb | 1319 | spin_lock_irqsave(&sbi->cp_lock, flags); |
22ad0b6a | 1320 | |
1f43e2ad CY |
1321 | if (cpc->reason & CP_TRIMMED) |
1322 | __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG); | |
cd36d7a1 CY |
1323 | else |
1324 | __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG); | |
1f43e2ad | 1325 | |
c473f1a9 | 1326 | if (cpc->reason & CP_UMOUNT) |
e4c5d848 JK |
1327 | __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); |
1328 | else | |
1329 | __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); | |
1330 | ||
c473f1a9 | 1331 | if (cpc->reason & CP_FASTBOOT) |
e4c5d848 JK |
1332 | __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); |
1333 | else | |
1334 | __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG); | |
1335 | ||
1336 | if (orphan_num) | |
1337 | __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); | |
1338 | else | |
1339 | __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); | |
1340 | ||
c84ef3c5 | 1341 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
e4c5d848 JK |
1342 | __set_ckpt_flags(ckpt, CP_FSCK_FLAG); |
1343 | ||
c84ef3c5 ST |
1344 | if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS)) |
1345 | __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG); | |
1346 | else | |
1347 | __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG); | |
1348 | ||
4354994f DR |
1349 | if (is_sbi_flag_set(sbi, SBI_CP_DISABLED)) |
1350 | __set_ckpt_flags(ckpt, CP_DISABLED_FLAG); | |
1351 | else | |
1352 | __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG); | |
1353 | ||
db610a64 JK |
1354 | if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK)) |
1355 | __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); | |
1356 | else | |
1357 | __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG); | |
1358 | ||
af033b2a CY |
1359 | if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) |
1360 | __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); | |
bc88ac96 JK |
1361 | else |
1362 | __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); | |
af033b2a CY |
1363 | |
1364 | if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) | |
1365 | __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG); | |
1366 | ||
e4c5d848 JK |
1367 | /* set this flag to activate crc|cp_ver for recovery */ |
1368 | __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG); | |
f2367923 | 1369 | __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG); |
e4c5d848 | 1370 | |
d1aa2453 | 1371 | spin_unlock_irqrestore(&sbi->cp_lock, flags); |
e4c5d848 JK |
1372 | } |
1373 | ||
46706d59 GX |
1374 | static void commit_checkpoint(struct f2fs_sb_info *sbi, |
1375 | void *src, block_t blk_addr) | |
1376 | { | |
1377 | struct writeback_control wbc = { | |
1378 | .for_reclaim = 0, | |
1379 | }; | |
1380 | ||
1381 | /* | |
1382 | * pagevec_lookup_tag and lock_page again will take | |
4d57b86d CY |
1383 | * some extra time. Therefore, f2fs_update_meta_pages and |
1384 | * f2fs_sync_meta_pages are combined in this function. | |
46706d59 | 1385 | */ |
4d57b86d | 1386 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
46706d59 GX |
1387 | int err; |
1388 | ||
bae0ee7a | 1389 | f2fs_wait_on_page_writeback(page, META, true, true); |
8d64d365 CY |
1390 | |
1391 | memcpy(page_address(page), src, PAGE_SIZE); | |
1392 | ||
1393 | set_page_dirty(page); | |
46706d59 GX |
1394 | if (unlikely(!clear_page_dirty_for_io(page))) |
1395 | f2fs_bug_on(sbi, 1); | |
1396 | ||
1397 | /* writeout cp pack 2 page */ | |
1398 | err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO); | |
af697c0f JK |
1399 | if (unlikely(err && f2fs_cp_error(sbi))) { |
1400 | f2fs_put_page(page, 1); | |
1401 | return; | |
1402 | } | |
46706d59 | 1403 | |
af697c0f | 1404 | f2fs_bug_on(sbi, err); |
46706d59 GX |
1405 | f2fs_put_page(page, 0); |
1406 | ||
1407 | /* submit checkpoint (with barrier if NOBARRIER is not set) */ | |
1408 | f2fs_submit_merged_write(sbi, META_FLUSH); | |
1409 | } | |
1410 | ||
3a0a9cbc CY |
1411 | static inline u64 get_sectors_written(struct block_device *bdev) |
1412 | { | |
ff49c86f | 1413 | return (u64)part_stat_read(bdev, sectors[STAT_WRITE]); |
3a0a9cbc CY |
1414 | } |
1415 | ||
1416 | u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi) | |
1417 | { | |
1418 | if (f2fs_is_multi_device(sbi)) { | |
1419 | u64 sectors = 0; | |
1420 | int i; | |
1421 | ||
1422 | for (i = 0; i < sbi->s_ndevs; i++) | |
1423 | sectors += get_sectors_written(FDEV(i).bdev); | |
1424 | ||
1425 | return sectors; | |
1426 | } | |
1427 | ||
1428 | return get_sectors_written(sbi->sb->s_bdev); | |
1429 | } | |
1430 | ||
c34f42e2 | 1431 | static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1432 | { |
1433 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
77041823 | 1434 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
d1aa2453 | 1435 | unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags; |
127e670a | 1436 | block_t start_blk; |
127e670a | 1437 | unsigned int data_sum_blocks, orphan_blocks; |
7e586fa0 | 1438 | __u32 crc32 = 0; |
127e670a | 1439 | int i; |
55141486 | 1440 | int cp_payload_blks = __cp_payload(sbi); |
8f1dbbbb SL |
1441 | struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); |
1442 | u64 kbytes_written; | |
1228b482 | 1443 | int err; |
127e670a JK |
1444 | |
1445 | /* Flush all the NAT/SIT pages */ | |
8ec18bff | 1446 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO); |
127e670a | 1447 | |
7a88ddb5 | 1448 | /* start to update checkpoint, cp ver is already updated previously */ |
a1f72ac2 | 1449 | ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true)); |
127e670a | 1450 | ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); |
b5b82205 | 1451 | for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { |
127e670a JK |
1452 | ckpt->cur_node_segno[i] = |
1453 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); | |
1454 | ckpt->cur_node_blkoff[i] = | |
1455 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE)); | |
1456 | ckpt->alloc_type[i + CURSEG_HOT_NODE] = | |
1457 | curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); | |
1458 | } | |
b5b82205 | 1459 | for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { |
127e670a JK |
1460 | ckpt->cur_data_segno[i] = |
1461 | cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); | |
1462 | ckpt->cur_data_blkoff[i] = | |
1463 | cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA)); | |
1464 | ckpt->alloc_type[i + CURSEG_HOT_DATA] = | |
1465 | curseg_alloc_type(sbi, i + CURSEG_HOT_DATA); | |
1466 | } | |
1467 | ||
a87aff1d | 1468 | /* 2 cp + n data seg summary + orphan inode blocks */ |
4d57b86d | 1469 | data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false); |
d1aa2453 | 1470 | spin_lock_irqsave(&sbi->cp_lock, flags); |
b5b82205 | 1471 | if (data_sum_blocks < NR_CURSEG_DATA_TYPE) |
aaec2b1d | 1472 | __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
127e670a | 1473 | else |
aaec2b1d | 1474 | __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); |
d1aa2453 | 1475 | spin_unlock_irqrestore(&sbi->cp_lock, flags); |
127e670a | 1476 | |
67298804 | 1477 | orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num); |
1dbe4152 CL |
1478 | ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + |
1479 | orphan_blocks); | |
127e670a | 1480 | |
119ee914 | 1481 | if (__remain_node_summaries(cpc->reason)) |
2a4bd0c3 | 1482 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
1483 | cp_payload_blks + data_sum_blocks + |
1484 | orphan_blocks + NR_CURSEG_NODE_TYPE); | |
119ee914 | 1485 | else |
b5b82205 | 1486 | ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + |
1dbe4152 CL |
1487 | cp_payload_blks + data_sum_blocks + |
1488 | orphan_blocks); | |
119ee914 | 1489 | |
e4c5d848 JK |
1490 | /* update ckpt flag for checkpoint */ |
1491 | update_ckpt_flags(sbi, cpc); | |
a468f0ef | 1492 | |
127e670a JK |
1493 | /* update SIT/NAT bitmap */ |
1494 | get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); | |
1495 | get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); | |
1496 | ||
d7eb8f1c | 1497 | crc32 = f2fs_checkpoint_chksum(sbi, ckpt); |
7e586fa0 JK |
1498 | *((__le32 *)((unsigned char *)ckpt + |
1499 | le32_to_cpu(ckpt->checksum_offset))) | |
127e670a JK |
1500 | = cpu_to_le32(crc32); |
1501 | ||
8508e44a | 1502 | start_blk = __start_cp_next_addr(sbi); |
127e670a | 1503 | |
22ad0b6a | 1504 | /* write nat bits */ |
94c821fb CY |
1505 | if ((cpc->reason & CP_UMOUNT) && |
1506 | is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG)) { | |
22ad0b6a | 1507 | __u64 cp_ver = cur_cp_version(ckpt); |
22ad0b6a JK |
1508 | block_t blk; |
1509 | ||
1510 | cp_ver |= ((__u64)crc32 << 32); | |
1511 | *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver); | |
1512 | ||
1513 | blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks; | |
1514 | for (i = 0; i < nm_i->nat_bits_blocks; i++) | |
4d57b86d | 1515 | f2fs_update_meta_page(sbi, nm_i->nat_bits + |
22ad0b6a | 1516 | (i << F2FS_BLKSIZE_BITS), blk + i); |
22ad0b6a JK |
1517 | } |
1518 | ||
127e670a | 1519 | /* write out checkpoint buffer at block 0 */ |
4d57b86d | 1520 | f2fs_update_meta_page(sbi, ckpt, start_blk++); |
381722d2 CY |
1521 | |
1522 | for (i = 1; i < 1 + cp_payload_blks; i++) | |
4d57b86d | 1523 | f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE, |
381722d2 | 1524 | start_blk++); |
1dbe4152 | 1525 | |
67298804 | 1526 | if (orphan_num) { |
127e670a JK |
1527 | write_orphan_inodes(sbi, start_blk); |
1528 | start_blk += orphan_blocks; | |
1529 | } | |
1530 | ||
4d57b86d | 1531 | f2fs_write_data_summaries(sbi, start_blk); |
127e670a | 1532 | start_blk += data_sum_blocks; |
8f1dbbbb SL |
1533 | |
1534 | /* Record write statistics in the hot node summary */ | |
1535 | kbytes_written = sbi->kbytes_written; | |
3a0a9cbc CY |
1536 | kbytes_written += (f2fs_get_sectors_written(sbi) - |
1537 | sbi->sectors_written_start) >> 1; | |
b7ad7512 | 1538 | seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written); |
8f1dbbbb | 1539 | |
119ee914 | 1540 | if (__remain_node_summaries(cpc->reason)) { |
4d57b86d | 1541 | f2fs_write_node_summaries(sbi, start_blk); |
127e670a JK |
1542 | start_blk += NR_CURSEG_NODE_TYPE; |
1543 | } | |
1544 | ||
46706d59 GX |
1545 | /* update user_block_counts */ |
1546 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1547 | percpu_counter_set(&sbi->alloc_valid_block_count, 0); | |
127e670a | 1548 | |
46706d59 | 1549 | /* Here, we have one bio having CP pack except cp pack 2 page */ |
4d57b86d | 1550 | f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO); |
bf22c3cc ST |
1551 | /* Wait for all dirty meta pages to be submitted for IO */ |
1552 | f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META); | |
46706d59 GX |
1553 | |
1554 | /* wait for previous submitted meta pages writeback */ | |
bf22c3cc | 1555 | f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); |
127e670a | 1556 | |
46706d59 GX |
1557 | /* flush all device cache */ |
1558 | err = f2fs_flush_device_cache(sbi); | |
1559 | if (err) | |
1560 | return err; | |
127e670a | 1561 | |
46706d59 GX |
1562 | /* barrier and flush checkpoint cp pack 2 page if it can */ |
1563 | commit_checkpoint(sbi, ckpt, start_blk); | |
bf22c3cc | 1564 | f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA); |
6a8f8ca5 | 1565 | |
18767e62 | 1566 | /* |
542989b6 | 1567 | * invalidate intermediate page cache borrowed from meta inode which are |
aff6fbbe | 1568 | * used for migration of encrypted, verity or compressed inode's blocks. |
18767e62 | 1569 | */ |
aff6fbbe CY |
1570 | if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) || |
1571 | f2fs_sb_has_compression(sbi)) | |
18767e62 CY |
1572 | invalidate_mapping_pages(META_MAPPING(sbi), |
1573 | MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1); | |
1574 | ||
4d57b86d | 1575 | f2fs_release_ino_entry(sbi, false); |
cf779cab | 1576 | |
50fa53ec CY |
1577 | f2fs_reset_fsync_node_info(sbi); |
1578 | ||
caf0047e | 1579 | clear_sbi_flag(sbi, SBI_IS_DIRTY); |
bbf156f7 | 1580 | clear_sbi_flag(sbi, SBI_NEED_CP); |
af033b2a | 1581 | clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH); |
c9c8ed50 CY |
1582 | |
1583 | spin_lock(&sbi->stat_lock); | |
4354994f | 1584 | sbi->unusable_block_count = 0; |
c9c8ed50 CY |
1585 | spin_unlock(&sbi->stat_lock); |
1586 | ||
8508e44a | 1587 | __set_cp_next_pack(sbi); |
c34f42e2 | 1588 | |
c2a080ae CY |
1589 | /* |
1590 | * redirty superblock if metadata like node page or inode cache is | |
1591 | * updated during writing checkpoint. | |
1592 | */ | |
1593 | if (get_pages(sbi, F2FS_DIRTY_NODES) || | |
1594 | get_pages(sbi, F2FS_DIRTY_IMETA)) | |
1595 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
1596 | ||
1597 | f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS)); | |
1598 | ||
af697c0f | 1599 | return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0; |
127e670a JK |
1600 | } |
1601 | ||
4d57b86d | 1602 | int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
127e670a JK |
1603 | { |
1604 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1605 | unsigned long long ckpt_ver; | |
c34f42e2 | 1606 | int err = 0; |
127e670a | 1607 | |
f5a131bb CY |
1608 | if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi)) |
1609 | return -EROFS; | |
1610 | ||
4354994f DR |
1611 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
1612 | if (cpc->reason != CP_PAUSE) | |
1613 | return 0; | |
dcbb4c10 | 1614 | f2fs_warn(sbi, "Start checkpoint disabled!"); |
4354994f | 1615 | } |
b4b10061 | 1616 | if (cpc->reason != CP_RESIZE) |
8769918b | 1617 | down_write(&sbi->cp_global_sem); |
8501017e | 1618 | |
caf0047e | 1619 | if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) && |
c473f1a9 CY |
1620 | ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) || |
1621 | ((cpc->reason & CP_DISCARD) && !sbi->discard_blks))) | |
8501017e | 1622 | goto out; |
c34f42e2 CY |
1623 | if (unlikely(f2fs_cp_error(sbi))) { |
1624 | err = -EIO; | |
cf779cab | 1625 | goto out; |
c34f42e2 | 1626 | } |
2bda542d WL |
1627 | |
1628 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); | |
1629 | ||
c34f42e2 CY |
1630 | err = block_operations(sbi); |
1631 | if (err) | |
cf779cab | 1632 | goto out; |
127e670a | 1633 | |
75ab4cb8 | 1634 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); |
2af4bd6c | 1635 | |
b9109b0e | 1636 | f2fs_flush_merged_writes(sbi); |
127e670a | 1637 | |
58cce381 | 1638 | /* this is the case of multiple fstrims without any changes */ |
c473f1a9 | 1639 | if (cpc->reason & CP_DISCARD) { |
4d57b86d | 1640 | if (!f2fs_exist_trim_candidates(sbi, cpc)) { |
25290fa5 JK |
1641 | unblock_operations(sbi); |
1642 | goto out; | |
1643 | } | |
1644 | ||
a95ba66a | 1645 | if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 && |
0333ad4e JK |
1646 | SIT_I(sbi)->dirty_sentries == 0 && |
1647 | prefree_segments(sbi) == 0) { | |
4d57b86d CY |
1648 | f2fs_flush_sit_entries(sbi, cpc); |
1649 | f2fs_clear_prefree_segments(sbi, cpc); | |
0333ad4e JK |
1650 | unblock_operations(sbi); |
1651 | goto out; | |
1652 | } | |
58cce381 YH |
1653 | } |
1654 | ||
127e670a JK |
1655 | /* |
1656 | * update checkpoint pack index | |
1657 | * Increase the version number so that | |
1658 | * SIT entries and seg summaries are written at correct place | |
1659 | */ | |
d71b5564 | 1660 | ckpt_ver = cur_cp_version(ckpt); |
127e670a JK |
1661 | ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver); |
1662 | ||
1663 | /* write cached NAT/SIT entries to NAT/SIT area */ | |
edc55aaf | 1664 | err = f2fs_flush_nat_entries(sbi, cpc); |
91803392 CY |
1665 | if (err) { |
1666 | f2fs_err(sbi, "f2fs_flush_nat_entries failed err:%d, stop checkpoint", err); | |
1667 | f2fs_bug_on(sbi, !f2fs_cp_error(sbi)); | |
edc55aaf | 1668 | goto stop; |
91803392 | 1669 | } |
edc55aaf | 1670 | |
4d57b86d | 1671 | f2fs_flush_sit_entries(sbi, cpc); |
127e670a | 1672 | |
d0b9e42a | 1673 | /* save inmem log status */ |
093749e2 | 1674 | f2fs_save_inmem_curseg(sbi); |
d0b9e42a | 1675 | |
c34f42e2 | 1676 | err = do_checkpoint(sbi, cpc); |
91803392 CY |
1677 | if (err) { |
1678 | f2fs_err(sbi, "do_checkpoint failed err:%d, stop checkpoint", err); | |
1679 | f2fs_bug_on(sbi, !f2fs_cp_error(sbi)); | |
4d57b86d | 1680 | f2fs_release_discard_addrs(sbi); |
91803392 | 1681 | } else { |
4d57b86d | 1682 | f2fs_clear_prefree_segments(sbi, cpc); |
91803392 | 1683 | } |
d0b9e42a | 1684 | |
093749e2 | 1685 | f2fs_restore_inmem_curseg(sbi); |
edc55aaf | 1686 | stop: |
127e670a | 1687 | unblock_operations(sbi); |
942e0be6 | 1688 | stat_inc_cp_count(sbi->stat_info); |
10027551 | 1689 | |
c473f1a9 | 1690 | if (cpc->reason & CP_RECOVERY) |
dcbb4c10 | 1691 | f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver); |
60b99b48 | 1692 | |
7a88ddb5 | 1693 | /* update CP_TIME to trigger checkpoint periodically */ |
6beceb54 | 1694 | f2fs_update_time(sbi, CP_TIME); |
55d1cdb2 | 1695 | trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); |
8501017e | 1696 | out: |
b4b10061 | 1697 | if (cpc->reason != CP_RESIZE) |
8769918b | 1698 | up_write(&sbi->cp_global_sem); |
c34f42e2 | 1699 | return err; |
127e670a JK |
1700 | } |
1701 | ||
4d57b86d | 1702 | void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi) |
127e670a | 1703 | { |
6451e041 JK |
1704 | int i; |
1705 | ||
1706 | for (i = 0; i < MAX_INO_ENTRY; i++) { | |
67298804 CY |
1707 | struct inode_management *im = &sbi->im[i]; |
1708 | ||
1709 | INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC); | |
1710 | spin_lock_init(&im->ino_lock); | |
1711 | INIT_LIST_HEAD(&im->ino_list); | |
1712 | im->ino_num = 0; | |
6451e041 JK |
1713 | } |
1714 | ||
b5b82205 | 1715 | sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - |
d0b9e42a | 1716 | NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) * |
14b42817 | 1717 | F2FS_ORPHANS_PER_BLOCK; |
127e670a JK |
1718 | } |
1719 | ||
4d57b86d | 1720 | int __init f2fs_create_checkpoint_caches(void) |
127e670a | 1721 | { |
6451e041 JK |
1722 | ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry", |
1723 | sizeof(struct ino_entry)); | |
1724 | if (!ino_entry_slab) | |
127e670a | 1725 | return -ENOMEM; |
4d57b86d | 1726 | f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry", |
06292073 | 1727 | sizeof(struct inode_entry)); |
4d57b86d | 1728 | if (!f2fs_inode_entry_slab) { |
6451e041 | 1729 | kmem_cache_destroy(ino_entry_slab); |
127e670a JK |
1730 | return -ENOMEM; |
1731 | } | |
1732 | return 0; | |
1733 | } | |
1734 | ||
4d57b86d | 1735 | void f2fs_destroy_checkpoint_caches(void) |
127e670a | 1736 | { |
6451e041 | 1737 | kmem_cache_destroy(ino_entry_slab); |
4d57b86d | 1738 | kmem_cache_destroy(f2fs_inode_entry_slab); |
127e670a | 1739 | } |
261eeb9c DJ |
1740 | |
1741 | static int __write_checkpoint_sync(struct f2fs_sb_info *sbi) | |
1742 | { | |
1743 | struct cp_control cpc = { .reason = CP_SYNC, }; | |
1744 | int err; | |
1745 | ||
1746 | down_write(&sbi->gc_lock); | |
1747 | err = f2fs_write_checkpoint(sbi, &cpc); | |
1748 | up_write(&sbi->gc_lock); | |
1749 | ||
1750 | return err; | |
1751 | } | |
1752 | ||
1753 | static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi) | |
1754 | { | |
1755 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1756 | struct ckpt_req *req, *next; | |
1757 | struct llist_node *dispatch_list; | |
1758 | u64 sum_diff = 0, diff, count = 0; | |
1759 | int ret; | |
1760 | ||
1761 | dispatch_list = llist_del_all(&cprc->issue_list); | |
1762 | if (!dispatch_list) | |
1763 | return; | |
1764 | dispatch_list = llist_reverse_order(dispatch_list); | |
1765 | ||
1766 | ret = __write_checkpoint_sync(sbi); | |
1767 | atomic_inc(&cprc->issued_ckpt); | |
1768 | ||
1769 | llist_for_each_entry_safe(req, next, dispatch_list, llnode) { | |
1770 | diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time); | |
1771 | req->ret = ret; | |
1772 | complete(&req->wait); | |
1773 | ||
1774 | sum_diff += diff; | |
1775 | count++; | |
1776 | } | |
1777 | atomic_sub(count, &cprc->queued_ckpt); | |
1778 | atomic_add(count, &cprc->total_ckpt); | |
1779 | ||
1780 | spin_lock(&cprc->stat_lock); | |
1781 | cprc->cur_time = (unsigned int)div64_u64(sum_diff, count); | |
1782 | if (cprc->peak_time < cprc->cur_time) | |
1783 | cprc->peak_time = cprc->cur_time; | |
1784 | spin_unlock(&cprc->stat_lock); | |
1785 | } | |
1786 | ||
1787 | static int issue_checkpoint_thread(void *data) | |
1788 | { | |
1789 | struct f2fs_sb_info *sbi = data; | |
1790 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1791 | wait_queue_head_t *q = &cprc->ckpt_wait_queue; | |
1792 | repeat: | |
1793 | if (kthread_should_stop()) | |
1794 | return 0; | |
1795 | ||
261eeb9c DJ |
1796 | if (!llist_empty(&cprc->issue_list)) |
1797 | __checkpoint_and_complete_reqs(sbi); | |
1798 | ||
261eeb9c DJ |
1799 | wait_event_interruptible(*q, |
1800 | kthread_should_stop() || !llist_empty(&cprc->issue_list)); | |
1801 | goto repeat; | |
1802 | } | |
1803 | ||
1804 | static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi, | |
1805 | struct ckpt_req *wait_req) | |
1806 | { | |
1807 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1808 | ||
1809 | if (!llist_empty(&cprc->issue_list)) { | |
1810 | __checkpoint_and_complete_reqs(sbi); | |
1811 | } else { | |
1812 | /* already dispatched by issue_checkpoint_thread */ | |
1813 | if (wait_req) | |
1814 | wait_for_completion(&wait_req->wait); | |
1815 | } | |
1816 | } | |
1817 | ||
1818 | static void init_ckpt_req(struct ckpt_req *req) | |
1819 | { | |
1820 | memset(req, 0, sizeof(struct ckpt_req)); | |
1821 | ||
1822 | init_completion(&req->wait); | |
1823 | req->queue_time = ktime_get(); | |
1824 | } | |
1825 | ||
1826 | int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi) | |
1827 | { | |
1828 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1829 | struct ckpt_req req; | |
1830 | struct cp_control cpc; | |
1831 | ||
1832 | cpc.reason = __get_cp_reason(sbi); | |
1833 | if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) { | |
1834 | int ret; | |
1835 | ||
1836 | down_write(&sbi->gc_lock); | |
1837 | ret = f2fs_write_checkpoint(sbi, &cpc); | |
1838 | up_write(&sbi->gc_lock); | |
1839 | ||
1840 | return ret; | |
1841 | } | |
1842 | ||
1843 | if (!cprc->f2fs_issue_ckpt) | |
1844 | return __write_checkpoint_sync(sbi); | |
1845 | ||
1846 | init_ckpt_req(&req); | |
1847 | ||
1848 | llist_add(&req.llnode, &cprc->issue_list); | |
1849 | atomic_inc(&cprc->queued_ckpt); | |
1850 | ||
3b42c741 CY |
1851 | /* |
1852 | * update issue_list before we wake up issue_checkpoint thread, | |
1853 | * this smp_mb() pairs with another barrier in ___wait_event(), | |
1854 | * see more details in comments of waitqueue_active(). | |
1855 | */ | |
261eeb9c DJ |
1856 | smp_mb(); |
1857 | ||
1858 | if (waitqueue_active(&cprc->ckpt_wait_queue)) | |
1859 | wake_up(&cprc->ckpt_wait_queue); | |
1860 | ||
1861 | if (cprc->f2fs_issue_ckpt) | |
1862 | wait_for_completion(&req.wait); | |
1863 | else | |
1864 | flush_remained_ckpt_reqs(sbi, &req); | |
1865 | ||
1866 | return req.ret; | |
1867 | } | |
1868 | ||
1869 | int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi) | |
1870 | { | |
1871 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
1872 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1873 | ||
1874 | if (cprc->f2fs_issue_ckpt) | |
1875 | return 0; | |
1876 | ||
1877 | cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi, | |
1878 | "f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev)); | |
1879 | if (IS_ERR(cprc->f2fs_issue_ckpt)) { | |
1880 | cprc->f2fs_issue_ckpt = NULL; | |
1881 | return -ENOMEM; | |
1882 | } | |
1883 | ||
e6592066 | 1884 | set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio); |
261eeb9c DJ |
1885 | |
1886 | return 0; | |
1887 | } | |
1888 | ||
1889 | void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi) | |
1890 | { | |
1891 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1892 | ||
1893 | if (cprc->f2fs_issue_ckpt) { | |
1894 | struct task_struct *ckpt_task = cprc->f2fs_issue_ckpt; | |
1895 | ||
1896 | cprc->f2fs_issue_ckpt = NULL; | |
1897 | kthread_stop(ckpt_task); | |
1898 | ||
1899 | flush_remained_ckpt_reqs(sbi, NULL); | |
1900 | } | |
1901 | } | |
1902 | ||
1903 | void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi) | |
1904 | { | |
1905 | struct ckpt_req_control *cprc = &sbi->cprc_info; | |
1906 | ||
1907 | atomic_set(&cprc->issued_ckpt, 0); | |
1908 | atomic_set(&cprc->total_ckpt, 0); | |
1909 | atomic_set(&cprc->queued_ckpt, 0); | |
e6592066 | 1910 | cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO; |
261eeb9c DJ |
1911 | init_waitqueue_head(&cprc->ckpt_wait_queue); |
1912 | init_llist_head(&cprc->issue_list); | |
1913 | spin_lock_init(&cprc->stat_lock); | |
1914 | } |