This source file includes following definitions.
- CURSEG_I
- get_seg_entry
- get_sec_entry
- get_valid_blocks
- get_ckpt_valid_blocks
- seg_info_from_raw_sit
- __seg_info_to_raw_sit
- seg_info_to_sit_page
- seg_info_to_raw_sit
- find_next_inuse
- __set_free
- __set_inuse
- __set_test_and_free
- __set_test_and_inuse
- get_sit_bitmap
- written_block_count
- free_segments
- reserved_segments
- free_sections
- prefree_segments
- dirty_segments
- overprovision_segments
- reserved_sections
- has_curseg_enough_space
- has_not_enough_free_secs
- f2fs_is_checkpoint_ready
- excess_prefree_segs
- utilization
- curseg_segno
- curseg_alloc_type
- curseg_blkoff
- check_seg_range
- verify_fio_blkaddr
- check_block_count
- current_sit_addr
- next_sit_addr
- set_to_next_sit
- get_mtime
- set_summary
- start_sum_block
- sum_blk_addr
- sec_usage_check
- nr_pages_to_skip
- nr_pages_to_write
- wake_up_discard_thread
1
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5
6
7
8 #include <linux/blkdev.h>
9 #include <linux/backing-dev.h>
10
11
12 #define NULL_SEGNO ((unsigned int)(~0))
13 #define NULL_SECNO ((unsigned int)(~0))
14
15 #define DEF_RECLAIM_PREFREE_SEGMENTS 5
16 #define DEF_MAX_RECLAIM_PREFREE_SEGMENTS 4096
17
18 #define F2FS_MIN_SEGMENTS 9
19
20
21 #define GET_L2R_SEGNO(free_i, segno) ((segno) - (free_i)->start_segno)
22 #define GET_R2L_SEGNO(free_i, segno) ((segno) + (free_i)->start_segno)
23
24 #define IS_DATASEG(t) ((t) <= CURSEG_COLD_DATA)
25 #define IS_NODESEG(t) ((t) >= CURSEG_HOT_NODE)
26
27 #define IS_HOT(t) ((t) == CURSEG_HOT_NODE || (t) == CURSEG_HOT_DATA)
28 #define IS_WARM(t) ((t) == CURSEG_WARM_NODE || (t) == CURSEG_WARM_DATA)
29 #define IS_COLD(t) ((t) == CURSEG_COLD_NODE || (t) == CURSEG_COLD_DATA)
30
31 #define IS_CURSEG(sbi, seg) \
32 (((seg) == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno) || \
33 ((seg) == CURSEG_I(sbi, CURSEG_WARM_DATA)->segno) || \
34 ((seg) == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno) || \
35 ((seg) == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno) || \
36 ((seg) == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno) || \
37 ((seg) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno))
38
39 #define IS_CURSEC(sbi, secno) \
40 (((secno) == CURSEG_I(sbi, CURSEG_HOT_DATA)->segno / \
41 (sbi)->segs_per_sec) || \
42 ((secno) == CURSEG_I(sbi, CURSEG_WARM_DATA)->segno / \
43 (sbi)->segs_per_sec) || \
44 ((secno) == CURSEG_I(sbi, CURSEG_COLD_DATA)->segno / \
45 (sbi)->segs_per_sec) || \
46 ((secno) == CURSEG_I(sbi, CURSEG_HOT_NODE)->segno / \
47 (sbi)->segs_per_sec) || \
48 ((secno) == CURSEG_I(sbi, CURSEG_WARM_NODE)->segno / \
49 (sbi)->segs_per_sec) || \
50 ((secno) == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \
51 (sbi)->segs_per_sec)) \
52
53 #define MAIN_BLKADDR(sbi) \
54 (SM_I(sbi) ? SM_I(sbi)->main_blkaddr : \
55 le32_to_cpu(F2FS_RAW_SUPER(sbi)->main_blkaddr))
56 #define SEG0_BLKADDR(sbi) \
57 (SM_I(sbi) ? SM_I(sbi)->seg0_blkaddr : \
58 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment0_blkaddr))
59
60 #define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments)
61 #define MAIN_SECS(sbi) ((sbi)->total_sections)
62
63 #define TOTAL_SEGS(sbi) \
64 (SM_I(sbi) ? SM_I(sbi)->segment_count : \
65 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count))
66 #define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << (sbi)->log_blocks_per_seg)
67
68 #define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi))
69 #define SEGMENT_SIZE(sbi) (1ULL << ((sbi)->log_blocksize + \
70 (sbi)->log_blocks_per_seg))
71
72 #define START_BLOCK(sbi, segno) (SEG0_BLKADDR(sbi) + \
73 (GET_R2L_SEGNO(FREE_I(sbi), segno) << (sbi)->log_blocks_per_seg))
74
75 #define NEXT_FREE_BLKADDR(sbi, curseg) \
76 (START_BLOCK(sbi, (curseg)->segno) + (curseg)->next_blkoff)
77
78 #define GET_SEGOFF_FROM_SEG0(sbi, blk_addr) ((blk_addr) - SEG0_BLKADDR(sbi))
79 #define GET_SEGNO_FROM_SEG0(sbi, blk_addr) \
80 (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) >> (sbi)->log_blocks_per_seg)
81 #define GET_BLKOFF_FROM_SEG0(sbi, blk_addr) \
82 (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & ((sbi)->blocks_per_seg - 1))
83
84 #define GET_SEGNO(sbi, blk_addr) \
85 ((!__is_valid_data_blkaddr(blk_addr)) ? \
86 NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi), \
87 GET_SEGNO_FROM_SEG0(sbi, blk_addr)))
88 #define BLKS_PER_SEC(sbi) \
89 ((sbi)->segs_per_sec * (sbi)->blocks_per_seg)
90 #define GET_SEC_FROM_SEG(sbi, segno) \
91 ((segno) / (sbi)->segs_per_sec)
92 #define GET_SEG_FROM_SEC(sbi, secno) \
93 ((secno) * (sbi)->segs_per_sec)
94 #define GET_ZONE_FROM_SEC(sbi, secno) \
95 ((secno) / (sbi)->secs_per_zone)
96 #define GET_ZONE_FROM_SEG(sbi, segno) \
97 GET_ZONE_FROM_SEC(sbi, GET_SEC_FROM_SEG(sbi, segno))
98
99 #define GET_SUM_BLOCK(sbi, segno) \
100 ((sbi)->sm_info->ssa_blkaddr + (segno))
101
102 #define GET_SUM_TYPE(footer) ((footer)->entry_type)
103 #define SET_SUM_TYPE(footer, type) ((footer)->entry_type = (type))
104
105 #define SIT_ENTRY_OFFSET(sit_i, segno) \
106 ((segno) % (sit_i)->sents_per_block)
107 #define SIT_BLOCK_OFFSET(segno) \
108 ((segno) / SIT_ENTRY_PER_BLOCK)
109 #define START_SEGNO(segno) \
110 (SIT_BLOCK_OFFSET(segno) * SIT_ENTRY_PER_BLOCK)
111 #define SIT_BLK_CNT(sbi) \
112 DIV_ROUND_UP(MAIN_SEGS(sbi), SIT_ENTRY_PER_BLOCK)
113 #define f2fs_bitmap_size(nr) \
114 (BITS_TO_LONGS(nr) * sizeof(unsigned long))
115
116 #define SECTOR_FROM_BLOCK(blk_addr) \
117 (((sector_t)blk_addr) << F2FS_LOG_SECTORS_PER_BLOCK)
118 #define SECTOR_TO_BLOCK(sectors) \
119 ((sectors) >> F2FS_LOG_SECTORS_PER_BLOCK)
120
121
122
123
124
125
126 enum {
127 ALLOC_RIGHT = 0,
128 ALLOC_LEFT
129 };
130
131
132
133
134
135
136 enum {
137 LFS = 0,
138 SSR
139 };
140
141
142
143
144
145
146 enum {
147 GC_CB = 0,
148 GC_GREEDY,
149 ALLOC_NEXT,
150 FLUSH_DEVICE,
151 MAX_GC_POLICY,
152 };
153
154
155
156
157
158
159 enum {
160 BG_GC = 0,
161 FG_GC,
162 FORCE_FG_GC,
163 };
164
165
166 struct victim_sel_policy {
167 int alloc_mode;
168 int gc_mode;
169 unsigned long *dirty_segmap;
170 unsigned int max_search;
171 unsigned int offset;
172 unsigned int ofs_unit;
173 unsigned int min_cost;
174 unsigned int min_segno;
175 };
176
177 struct seg_entry {
178 unsigned int type:6;
179 unsigned int valid_blocks:10;
180 unsigned int ckpt_valid_blocks:10;
181 unsigned int padding:6;
182 unsigned char *cur_valid_map;
183 #ifdef CONFIG_F2FS_CHECK_FS
184 unsigned char *cur_valid_map_mir;
185 #endif
186
187
188
189
190 unsigned char *ckpt_valid_map;
191 unsigned char *discard_map;
192 unsigned long long mtime;
193 };
194
195 struct sec_entry {
196 unsigned int valid_blocks;
197 };
198
199 struct segment_allocation {
200 void (*allocate_segment)(struct f2fs_sb_info *, int, bool);
201 };
202
203
204
205
206
207 #define ATOMIC_WRITTEN_PAGE ((unsigned long)-1)
208 #define DUMMY_WRITTEN_PAGE ((unsigned long)-2)
209
210 #define IS_ATOMIC_WRITTEN_PAGE(page) \
211 (page_private(page) == (unsigned long)ATOMIC_WRITTEN_PAGE)
212 #define IS_DUMMY_WRITTEN_PAGE(page) \
213 (page_private(page) == (unsigned long)DUMMY_WRITTEN_PAGE)
214
215 #define MAX_SKIP_GC_COUNT 16
216
217 struct inmem_pages {
218 struct list_head list;
219 struct page *page;
220 block_t old_addr;
221 };
222
223 struct sit_info {
224 const struct segment_allocation *s_ops;
225
226 block_t sit_base_addr;
227 block_t sit_blocks;
228 block_t written_valid_blocks;
229 char *bitmap;
230 char *sit_bitmap;
231 #ifdef CONFIG_F2FS_CHECK_FS
232 char *sit_bitmap_mir;
233
234
235 unsigned long *invalid_segmap;
236 #endif
237 unsigned int bitmap_size;
238
239 unsigned long *tmp_map;
240 unsigned long *dirty_sentries_bitmap;
241 unsigned int dirty_sentries;
242 unsigned int sents_per_block;
243 struct rw_semaphore sentry_lock;
244 struct seg_entry *sentries;
245 struct sec_entry *sec_entries;
246
247
248 unsigned long long elapsed_time;
249 unsigned long long mounted_time;
250 unsigned long long min_mtime;
251 unsigned long long max_mtime;
252
253 unsigned int last_victim[MAX_GC_POLICY];
254 };
255
256 struct free_segmap_info {
257 unsigned int start_segno;
258 unsigned int free_segments;
259 unsigned int free_sections;
260 spinlock_t segmap_lock;
261 unsigned long *free_segmap;
262 unsigned long *free_secmap;
263 };
264
265
266 enum dirty_type {
267 DIRTY_HOT_DATA,
268 DIRTY_WARM_DATA,
269 DIRTY_COLD_DATA,
270 DIRTY_HOT_NODE,
271 DIRTY_WARM_NODE,
272 DIRTY_COLD_NODE,
273 DIRTY,
274 PRE,
275 NR_DIRTY_TYPE
276 };
277
278 struct dirty_seglist_info {
279 const struct victim_selection *v_ops;
280 unsigned long *dirty_segmap[NR_DIRTY_TYPE];
281 struct mutex seglist_lock;
282 int nr_dirty[NR_DIRTY_TYPE];
283 unsigned long *victim_secmap;
284 };
285
286
287 struct victim_selection {
288 int (*get_victim)(struct f2fs_sb_info *, unsigned int *,
289 int, int, char);
290 };
291
292
293 struct curseg_info {
294 struct mutex curseg_mutex;
295 struct f2fs_summary_block *sum_blk;
296 struct rw_semaphore journal_rwsem;
297 struct f2fs_journal *journal;
298 unsigned char alloc_type;
299 unsigned int segno;
300 unsigned short next_blkoff;
301 unsigned int zone;
302 unsigned int next_segno;
303 };
304
305 struct sit_entry_set {
306 struct list_head set_list;
307 unsigned int start_segno;
308 unsigned int entry_cnt;
309 };
310
311
312
313
314 static inline struct curseg_info *CURSEG_I(struct f2fs_sb_info *sbi, int type)
315 {
316 return (struct curseg_info *)(SM_I(sbi)->curseg_array + type);
317 }
318
319 static inline struct seg_entry *get_seg_entry(struct f2fs_sb_info *sbi,
320 unsigned int segno)
321 {
322 struct sit_info *sit_i = SIT_I(sbi);
323 return &sit_i->sentries[segno];
324 }
325
326 static inline struct sec_entry *get_sec_entry(struct f2fs_sb_info *sbi,
327 unsigned int segno)
328 {
329 struct sit_info *sit_i = SIT_I(sbi);
330 return &sit_i->sec_entries[GET_SEC_FROM_SEG(sbi, segno)];
331 }
332
333 static inline unsigned int get_valid_blocks(struct f2fs_sb_info *sbi,
334 unsigned int segno, bool use_section)
335 {
336
337
338
339
340 if (use_section && __is_large_section(sbi))
341 return get_sec_entry(sbi, segno)->valid_blocks;
342 else
343 return get_seg_entry(sbi, segno)->valid_blocks;
344 }
345
346 static inline unsigned int get_ckpt_valid_blocks(struct f2fs_sb_info *sbi,
347 unsigned int segno)
348 {
349 return get_seg_entry(sbi, segno)->ckpt_valid_blocks;
350 }
351
352 static inline void seg_info_from_raw_sit(struct seg_entry *se,
353 struct f2fs_sit_entry *rs)
354 {
355 se->valid_blocks = GET_SIT_VBLOCKS(rs);
356 se->ckpt_valid_blocks = GET_SIT_VBLOCKS(rs);
357 memcpy(se->cur_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
358 memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
359 #ifdef CONFIG_F2FS_CHECK_FS
360 memcpy(se->cur_valid_map_mir, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
361 #endif
362 se->type = GET_SIT_TYPE(rs);
363 se->mtime = le64_to_cpu(rs->mtime);
364 }
365
366 static inline void __seg_info_to_raw_sit(struct seg_entry *se,
367 struct f2fs_sit_entry *rs)
368 {
369 unsigned short raw_vblocks = (se->type << SIT_VBLOCKS_SHIFT) |
370 se->valid_blocks;
371 rs->vblocks = cpu_to_le16(raw_vblocks);
372 memcpy(rs->valid_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE);
373 rs->mtime = cpu_to_le64(se->mtime);
374 }
375
376 static inline void seg_info_to_sit_page(struct f2fs_sb_info *sbi,
377 struct page *page, unsigned int start)
378 {
379 struct f2fs_sit_block *raw_sit;
380 struct seg_entry *se;
381 struct f2fs_sit_entry *rs;
382 unsigned int end = min(start + SIT_ENTRY_PER_BLOCK,
383 (unsigned long)MAIN_SEGS(sbi));
384 int i;
385
386 raw_sit = (struct f2fs_sit_block *)page_address(page);
387 memset(raw_sit, 0, PAGE_SIZE);
388 for (i = 0; i < end - start; i++) {
389 rs = &raw_sit->entries[i];
390 se = get_seg_entry(sbi, start + i);
391 __seg_info_to_raw_sit(se, rs);
392 }
393 }
394
395 static inline void seg_info_to_raw_sit(struct seg_entry *se,
396 struct f2fs_sit_entry *rs)
397 {
398 __seg_info_to_raw_sit(se, rs);
399
400 memcpy(se->ckpt_valid_map, rs->valid_map, SIT_VBLOCK_MAP_SIZE);
401 se->ckpt_valid_blocks = se->valid_blocks;
402 }
403
404 static inline unsigned int find_next_inuse(struct free_segmap_info *free_i,
405 unsigned int max, unsigned int segno)
406 {
407 unsigned int ret;
408 spin_lock(&free_i->segmap_lock);
409 ret = find_next_bit(free_i->free_segmap, max, segno);
410 spin_unlock(&free_i->segmap_lock);
411 return ret;
412 }
413
414 static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno)
415 {
416 struct free_segmap_info *free_i = FREE_I(sbi);
417 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
418 unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno);
419 unsigned int next;
420
421 spin_lock(&free_i->segmap_lock);
422 clear_bit(segno, free_i->free_segmap);
423 free_i->free_segments++;
424
425 next = find_next_bit(free_i->free_segmap,
426 start_segno + sbi->segs_per_sec, start_segno);
427 if (next >= start_segno + sbi->segs_per_sec) {
428 clear_bit(secno, free_i->free_secmap);
429 free_i->free_sections++;
430 }
431 spin_unlock(&free_i->segmap_lock);
432 }
433
434 static inline void __set_inuse(struct f2fs_sb_info *sbi,
435 unsigned int segno)
436 {
437 struct free_segmap_info *free_i = FREE_I(sbi);
438 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
439
440 set_bit(segno, free_i->free_segmap);
441 free_i->free_segments--;
442 if (!test_and_set_bit(secno, free_i->free_secmap))
443 free_i->free_sections--;
444 }
445
446 static inline void __set_test_and_free(struct f2fs_sb_info *sbi,
447 unsigned int segno)
448 {
449 struct free_segmap_info *free_i = FREE_I(sbi);
450 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
451 unsigned int start_segno = GET_SEG_FROM_SEC(sbi, secno);
452 unsigned int next;
453
454 spin_lock(&free_i->segmap_lock);
455 if (test_and_clear_bit(segno, free_i->free_segmap)) {
456 free_i->free_segments++;
457
458 if (IS_CURSEC(sbi, secno))
459 goto skip_free;
460 next = find_next_bit(free_i->free_segmap,
461 start_segno + sbi->segs_per_sec, start_segno);
462 if (next >= start_segno + sbi->segs_per_sec) {
463 if (test_and_clear_bit(secno, free_i->free_secmap))
464 free_i->free_sections++;
465 }
466 }
467 skip_free:
468 spin_unlock(&free_i->segmap_lock);
469 }
470
471 static inline void __set_test_and_inuse(struct f2fs_sb_info *sbi,
472 unsigned int segno)
473 {
474 struct free_segmap_info *free_i = FREE_I(sbi);
475 unsigned int secno = GET_SEC_FROM_SEG(sbi, segno);
476
477 spin_lock(&free_i->segmap_lock);
478 if (!test_and_set_bit(segno, free_i->free_segmap)) {
479 free_i->free_segments--;
480 if (!test_and_set_bit(secno, free_i->free_secmap))
481 free_i->free_sections--;
482 }
483 spin_unlock(&free_i->segmap_lock);
484 }
485
486 static inline void get_sit_bitmap(struct f2fs_sb_info *sbi,
487 void *dst_addr)
488 {
489 struct sit_info *sit_i = SIT_I(sbi);
490
491 #ifdef CONFIG_F2FS_CHECK_FS
492 if (memcmp(sit_i->sit_bitmap, sit_i->sit_bitmap_mir,
493 sit_i->bitmap_size))
494 f2fs_bug_on(sbi, 1);
495 #endif
496 memcpy(dst_addr, sit_i->sit_bitmap, sit_i->bitmap_size);
497 }
498
499 static inline block_t written_block_count(struct f2fs_sb_info *sbi)
500 {
501 return SIT_I(sbi)->written_valid_blocks;
502 }
503
504 static inline unsigned int free_segments(struct f2fs_sb_info *sbi)
505 {
506 return FREE_I(sbi)->free_segments;
507 }
508
509 static inline int reserved_segments(struct f2fs_sb_info *sbi)
510 {
511 return SM_I(sbi)->reserved_segments;
512 }
513
514 static inline unsigned int free_sections(struct f2fs_sb_info *sbi)
515 {
516 return FREE_I(sbi)->free_sections;
517 }
518
519 static inline unsigned int prefree_segments(struct f2fs_sb_info *sbi)
520 {
521 return DIRTY_I(sbi)->nr_dirty[PRE];
522 }
523
524 static inline unsigned int dirty_segments(struct f2fs_sb_info *sbi)
525 {
526 return DIRTY_I(sbi)->nr_dirty[DIRTY_HOT_DATA] +
527 DIRTY_I(sbi)->nr_dirty[DIRTY_WARM_DATA] +
528 DIRTY_I(sbi)->nr_dirty[DIRTY_COLD_DATA] +
529 DIRTY_I(sbi)->nr_dirty[DIRTY_HOT_NODE] +
530 DIRTY_I(sbi)->nr_dirty[DIRTY_WARM_NODE] +
531 DIRTY_I(sbi)->nr_dirty[DIRTY_COLD_NODE];
532 }
533
534 static inline int overprovision_segments(struct f2fs_sb_info *sbi)
535 {
536 return SM_I(sbi)->ovp_segments;
537 }
538
539 static inline int reserved_sections(struct f2fs_sb_info *sbi)
540 {
541 return GET_SEC_FROM_SEG(sbi, (unsigned int)reserved_segments(sbi));
542 }
543
544 static inline bool has_curseg_enough_space(struct f2fs_sb_info *sbi)
545 {
546 unsigned int node_blocks = get_pages(sbi, F2FS_DIRTY_NODES) +
547 get_pages(sbi, F2FS_DIRTY_DENTS);
548 unsigned int dent_blocks = get_pages(sbi, F2FS_DIRTY_DENTS);
549 unsigned int segno, left_blocks;
550 int i;
551
552
553 for (i = CURSEG_HOT_NODE; i <= CURSEG_COLD_NODE; i++) {
554 segno = CURSEG_I(sbi, i)->segno;
555 left_blocks = sbi->blocks_per_seg -
556 get_seg_entry(sbi, segno)->ckpt_valid_blocks;
557
558 if (node_blocks > left_blocks)
559 return false;
560 }
561
562
563 segno = CURSEG_I(sbi, CURSEG_HOT_DATA)->segno;
564 left_blocks = sbi->blocks_per_seg -
565 get_seg_entry(sbi, segno)->ckpt_valid_blocks;
566 if (dent_blocks > left_blocks)
567 return false;
568 return true;
569 }
570
571 static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,
572 int freed, int needed)
573 {
574 int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
575 int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
576 int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
577
578 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
579 return false;
580
581 if (free_sections(sbi) + freed == reserved_sections(sbi) + needed &&
582 has_curseg_enough_space(sbi))
583 return false;
584 return (free_sections(sbi) + freed) <=
585 (node_secs + 2 * dent_secs + imeta_secs +
586 reserved_sections(sbi) + needed);
587 }
588
589 static inline bool f2fs_is_checkpoint_ready(struct f2fs_sb_info *sbi)
590 {
591 if (likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
592 return true;
593 if (likely(!has_not_enough_free_secs(sbi, 0, 0)))
594 return true;
595 return false;
596 }
597
598 static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi)
599 {
600 return prefree_segments(sbi) > SM_I(sbi)->rec_prefree_segments;
601 }
602
603 static inline int utilization(struct f2fs_sb_info *sbi)
604 {
605 return div_u64((u64)valid_user_blocks(sbi) * 100,
606 sbi->user_block_count);
607 }
608
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621
622
623 #define DEF_MIN_IPU_UTIL 70
624 #define DEF_MIN_FSYNC_BLOCKS 8
625 #define DEF_MIN_HOT_BLOCKS 16
626
627 #define SMALL_VOLUME_SEGMENTS (16 * 512)
628
629 enum {
630 F2FS_IPU_FORCE,
631 F2FS_IPU_SSR,
632 F2FS_IPU_UTIL,
633 F2FS_IPU_SSR_UTIL,
634 F2FS_IPU_FSYNC,
635 F2FS_IPU_ASYNC,
636 };
637
638 static inline unsigned int curseg_segno(struct f2fs_sb_info *sbi,
639 int type)
640 {
641 struct curseg_info *curseg = CURSEG_I(sbi, type);
642 return curseg->segno;
643 }
644
645 static inline unsigned char curseg_alloc_type(struct f2fs_sb_info *sbi,
646 int type)
647 {
648 struct curseg_info *curseg = CURSEG_I(sbi, type);
649 return curseg->alloc_type;
650 }
651
652 static inline unsigned short curseg_blkoff(struct f2fs_sb_info *sbi, int type)
653 {
654 struct curseg_info *curseg = CURSEG_I(sbi, type);
655 return curseg->next_blkoff;
656 }
657
658 static inline void check_seg_range(struct f2fs_sb_info *sbi, unsigned int segno)
659 {
660 f2fs_bug_on(sbi, segno > TOTAL_SEGS(sbi) - 1);
661 }
662
663 static inline void verify_fio_blkaddr(struct f2fs_io_info *fio)
664 {
665 struct f2fs_sb_info *sbi = fio->sbi;
666
667 if (__is_valid_data_blkaddr(fio->old_blkaddr))
668 verify_blkaddr(sbi, fio->old_blkaddr, __is_meta_io(fio) ?
669 META_GENERIC : DATA_GENERIC);
670 verify_blkaddr(sbi, fio->new_blkaddr, __is_meta_io(fio) ?
671 META_GENERIC : DATA_GENERIC_ENHANCE);
672 }
673
674
675
676
677 static inline int check_block_count(struct f2fs_sb_info *sbi,
678 int segno, struct f2fs_sit_entry *raw_sit)
679 {
680 bool is_valid = test_bit_le(0, raw_sit->valid_map) ? true : false;
681 int valid_blocks = 0;
682 int cur_pos = 0, next_pos;
683
684
685 do {
686 if (is_valid) {
687 next_pos = find_next_zero_bit_le(&raw_sit->valid_map,
688 sbi->blocks_per_seg,
689 cur_pos);
690 valid_blocks += next_pos - cur_pos;
691 } else
692 next_pos = find_next_bit_le(&raw_sit->valid_map,
693 sbi->blocks_per_seg,
694 cur_pos);
695 cur_pos = next_pos;
696 is_valid = !is_valid;
697 } while (cur_pos < sbi->blocks_per_seg);
698
699 if (unlikely(GET_SIT_VBLOCKS(raw_sit) != valid_blocks)) {
700 f2fs_err(sbi, "Mismatch valid blocks %d vs. %d",
701 GET_SIT_VBLOCKS(raw_sit), valid_blocks);
702 set_sbi_flag(sbi, SBI_NEED_FSCK);
703 return -EFSCORRUPTED;
704 }
705
706
707 if (unlikely(GET_SIT_VBLOCKS(raw_sit) > sbi->blocks_per_seg
708 || segno > TOTAL_SEGS(sbi) - 1)) {
709 f2fs_err(sbi, "Wrong valid blocks %d or segno %u",
710 GET_SIT_VBLOCKS(raw_sit), segno);
711 set_sbi_flag(sbi, SBI_NEED_FSCK);
712 return -EFSCORRUPTED;
713 }
714 return 0;
715 }
716
717 static inline pgoff_t current_sit_addr(struct f2fs_sb_info *sbi,
718 unsigned int start)
719 {
720 struct sit_info *sit_i = SIT_I(sbi);
721 unsigned int offset = SIT_BLOCK_OFFSET(start);
722 block_t blk_addr = sit_i->sit_base_addr + offset;
723
724 check_seg_range(sbi, start);
725
726 #ifdef CONFIG_F2FS_CHECK_FS
727 if (f2fs_test_bit(offset, sit_i->sit_bitmap) !=
728 f2fs_test_bit(offset, sit_i->sit_bitmap_mir))
729 f2fs_bug_on(sbi, 1);
730 #endif
731
732
733 if (f2fs_test_bit(offset, sit_i->sit_bitmap))
734 blk_addr += sit_i->sit_blocks;
735
736 return blk_addr;
737 }
738
739 static inline pgoff_t next_sit_addr(struct f2fs_sb_info *sbi,
740 pgoff_t block_addr)
741 {
742 struct sit_info *sit_i = SIT_I(sbi);
743 block_addr -= sit_i->sit_base_addr;
744 if (block_addr < sit_i->sit_blocks)
745 block_addr += sit_i->sit_blocks;
746 else
747 block_addr -= sit_i->sit_blocks;
748
749 return block_addr + sit_i->sit_base_addr;
750 }
751
752 static inline void set_to_next_sit(struct sit_info *sit_i, unsigned int start)
753 {
754 unsigned int block_off = SIT_BLOCK_OFFSET(start);
755
756 f2fs_change_bit(block_off, sit_i->sit_bitmap);
757 #ifdef CONFIG_F2FS_CHECK_FS
758 f2fs_change_bit(block_off, sit_i->sit_bitmap_mir);
759 #endif
760 }
761
762 static inline unsigned long long get_mtime(struct f2fs_sb_info *sbi,
763 bool base_time)
764 {
765 struct sit_info *sit_i = SIT_I(sbi);
766 time64_t diff, now = ktime_get_real_seconds();
767
768 if (now >= sit_i->mounted_time)
769 return sit_i->elapsed_time + now - sit_i->mounted_time;
770
771
772 if (!base_time) {
773 diff = sit_i->mounted_time - now;
774 if (sit_i->elapsed_time >= diff)
775 return sit_i->elapsed_time - diff;
776 return 0;
777 }
778 return sit_i->elapsed_time;
779 }
780
781 static inline void set_summary(struct f2fs_summary *sum, nid_t nid,
782 unsigned int ofs_in_node, unsigned char version)
783 {
784 sum->nid = cpu_to_le32(nid);
785 sum->ofs_in_node = cpu_to_le16(ofs_in_node);
786 sum->version = version;
787 }
788
789 static inline block_t start_sum_block(struct f2fs_sb_info *sbi)
790 {
791 return __start_cp_addr(sbi) +
792 le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
793 }
794
795 static inline block_t sum_blk_addr(struct f2fs_sb_info *sbi, int base, int type)
796 {
797 return __start_cp_addr(sbi) +
798 le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_total_block_count)
799 - (base + 1) + type;
800 }
801
802 static inline bool sec_usage_check(struct f2fs_sb_info *sbi, unsigned int secno)
803 {
804 if (IS_CURSEC(sbi, secno) || (sbi->cur_victim_sec == secno))
805 return true;
806 return false;
807 }
808
809
810
811
812
813
814
815
816 static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type)
817 {
818 if (sbi->sb->s_bdi->wb.dirty_exceeded)
819 return 0;
820
821 if (type == DATA)
822 return sbi->blocks_per_seg;
823 else if (type == NODE)
824 return 8 * sbi->blocks_per_seg;
825 else if (type == META)
826 return 8 * BIO_MAX_PAGES;
827 else
828 return 0;
829 }
830
831
832
833
834 static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type,
835 struct writeback_control *wbc)
836 {
837 long nr_to_write, desired;
838
839 if (wbc->sync_mode != WB_SYNC_NONE)
840 return 0;
841
842 nr_to_write = wbc->nr_to_write;
843 desired = BIO_MAX_PAGES;
844 if (type == NODE)
845 desired <<= 1;
846
847 wbc->nr_to_write = desired;
848 return desired - nr_to_write;
849 }
850
851 static inline void wake_up_discard_thread(struct f2fs_sb_info *sbi, bool force)
852 {
853 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
854 bool wakeup = false;
855 int i;
856
857 if (force)
858 goto wake_up;
859
860 mutex_lock(&dcc->cmd_lock);
861 for (i = MAX_PLIST_NUM - 1; i >= 0; i--) {
862 if (i + 1 < dcc->discard_granularity)
863 break;
864 if (!list_empty(&dcc->pend_list[i])) {
865 wakeup = true;
866 break;
867 }
868 }
869 mutex_unlock(&dcc->cmd_lock);
870 if (!wakeup || !is_idle(sbi, DISCARD_TIME))
871 return;
872 wake_up:
873 dcc->discard_wake = 1;
874 wake_up_interruptible_all(&dcc->discard_wait_queue);
875 }