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Commit | Line | Data |
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0a8165d7 | 1 | /* |
351df4b2 JK |
2 | * fs/f2fs/segment.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/bio.h> | |
14 | #include <linux/blkdev.h> | |
690e4a3e | 15 | #include <linux/prefetch.h> |
6b4afdd7 | 16 | #include <linux/kthread.h> |
74de593a | 17 | #include <linux/swap.h> |
60b99b48 | 18 | #include <linux/timer.h> |
351df4b2 JK |
19 | |
20 | #include "f2fs.h" | |
21 | #include "segment.h" | |
22 | #include "node.h" | |
9e4ded3f | 23 | #include "trace.h" |
6ec178da | 24 | #include <trace/events/f2fs.h> |
351df4b2 | 25 | |
9a7f143a CL |
26 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
27 | ||
7fd9e544 | 28 | static struct kmem_cache *discard_entry_slab; |
184a5cd2 | 29 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 30 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 31 | |
9a7f143a CL |
32 | /* |
33 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
34 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
35 | */ | |
36 | static inline unsigned long __reverse_ffs(unsigned long word) | |
37 | { | |
38 | int num = 0; | |
39 | ||
40 | #if BITS_PER_LONG == 64 | |
41 | if ((word & 0xffffffff) == 0) { | |
42 | num += 32; | |
43 | word >>= 32; | |
44 | } | |
45 | #endif | |
46 | if ((word & 0xffff) == 0) { | |
47 | num += 16; | |
48 | word >>= 16; | |
49 | } | |
50 | if ((word & 0xff) == 0) { | |
51 | num += 8; | |
52 | word >>= 8; | |
53 | } | |
54 | if ((word & 0xf0) == 0) | |
55 | num += 4; | |
56 | else | |
57 | word >>= 4; | |
58 | if ((word & 0xc) == 0) | |
59 | num += 2; | |
60 | else | |
61 | word >>= 2; | |
62 | if ((word & 0x2) == 0) | |
63 | num += 1; | |
64 | return num; | |
65 | } | |
66 | ||
67 | /* | |
e1c42045 | 68 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a CL |
69 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
70 | * Example: | |
71 | * LSB <--> MSB | |
72 | * f2fs_set_bit(0, bitmap) => 0000 0001 | |
73 | * f2fs_set_bit(7, bitmap) => 1000 0000 | |
74 | */ | |
75 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
76 | unsigned long size, unsigned long offset) | |
77 | { | |
e19ef527 JK |
78 | while (!f2fs_test_bit(offset, (unsigned char *)addr)) |
79 | offset++; | |
80 | ||
81 | if (offset > size) | |
82 | offset = size; | |
83 | ||
84 | return offset; | |
85 | #if 0 | |
9a7f143a CL |
86 | const unsigned long *p = addr + BIT_WORD(offset); |
87 | unsigned long result = offset & ~(BITS_PER_LONG - 1); | |
88 | unsigned long tmp; | |
89 | unsigned long mask, submask; | |
90 | unsigned long quot, rest; | |
91 | ||
92 | if (offset >= size) | |
93 | return size; | |
94 | ||
95 | size -= result; | |
96 | offset %= BITS_PER_LONG; | |
97 | if (!offset) | |
98 | goto aligned; | |
99 | ||
100 | tmp = *(p++); | |
101 | quot = (offset >> 3) << 3; | |
102 | rest = offset & 0x7; | |
103 | mask = ~0UL << quot; | |
104 | submask = (unsigned char)(0xff << rest) >> rest; | |
105 | submask <<= quot; | |
106 | mask &= submask; | |
107 | tmp &= mask; | |
108 | if (size < BITS_PER_LONG) | |
109 | goto found_first; | |
110 | if (tmp) | |
111 | goto found_middle; | |
112 | ||
113 | size -= BITS_PER_LONG; | |
114 | result += BITS_PER_LONG; | |
115 | aligned: | |
116 | while (size & ~(BITS_PER_LONG-1)) { | |
117 | tmp = *(p++); | |
118 | if (tmp) | |
119 | goto found_middle; | |
120 | result += BITS_PER_LONG; | |
121 | size -= BITS_PER_LONG; | |
122 | } | |
123 | if (!size) | |
124 | return result; | |
125 | tmp = *p; | |
126 | found_first: | |
127 | tmp &= (~0UL >> (BITS_PER_LONG - size)); | |
128 | if (tmp == 0UL) /* Are any bits set? */ | |
129 | return result + size; /* Nope. */ | |
130 | found_middle: | |
131 | return result + __reverse_ffs(tmp); | |
e19ef527 | 132 | #endif |
9a7f143a CL |
133 | } |
134 | ||
135 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
136 | unsigned long size, unsigned long offset) | |
137 | { | |
e19ef527 JK |
138 | while (f2fs_test_bit(offset, (unsigned char *)addr)) |
139 | offset++; | |
140 | ||
141 | if (offset > size) | |
142 | offset = size; | |
143 | ||
144 | return offset; | |
145 | #if 0 | |
9a7f143a CL |
146 | const unsigned long *p = addr + BIT_WORD(offset); |
147 | unsigned long result = offset & ~(BITS_PER_LONG - 1); | |
148 | unsigned long tmp; | |
149 | unsigned long mask, submask; | |
150 | unsigned long quot, rest; | |
151 | ||
152 | if (offset >= size) | |
153 | return size; | |
154 | ||
155 | size -= result; | |
156 | offset %= BITS_PER_LONG; | |
157 | if (!offset) | |
158 | goto aligned; | |
159 | ||
160 | tmp = *(p++); | |
161 | quot = (offset >> 3) << 3; | |
162 | rest = offset & 0x7; | |
163 | mask = ~(~0UL << quot); | |
164 | submask = (unsigned char)~((unsigned char)(0xff << rest) >> rest); | |
165 | submask <<= quot; | |
166 | mask += submask; | |
167 | tmp |= mask; | |
168 | if (size < BITS_PER_LONG) | |
169 | goto found_first; | |
170 | if (~tmp) | |
171 | goto found_middle; | |
172 | ||
173 | size -= BITS_PER_LONG; | |
174 | result += BITS_PER_LONG; | |
175 | aligned: | |
176 | while (size & ~(BITS_PER_LONG - 1)) { | |
177 | tmp = *(p++); | |
178 | if (~tmp) | |
179 | goto found_middle; | |
180 | result += BITS_PER_LONG; | |
181 | size -= BITS_PER_LONG; | |
182 | } | |
183 | if (!size) | |
184 | return result; | |
185 | tmp = *p; | |
186 | ||
187 | found_first: | |
188 | tmp |= ~0UL << size; | |
189 | if (tmp == ~0UL) /* Are any bits zero? */ | |
190 | return result + size; /* Nope. */ | |
191 | found_middle: | |
192 | return result + __reverse_ffz(tmp); | |
e19ef527 | 193 | #endif |
9a7f143a CL |
194 | } |
195 | ||
88b88a66 JK |
196 | void register_inmem_page(struct inode *inode, struct page *page) |
197 | { | |
198 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
199 | struct inmem_pages *new; | |
9be32d72 | 200 | |
9e4ded3f | 201 | f2fs_trace_pid(page); |
0722b101 | 202 | |
decd36b6 CY |
203 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
204 | SetPagePrivate(page); | |
205 | ||
88b88a66 JK |
206 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
207 | ||
208 | /* add atomic page indices to the list */ | |
209 | new->page = page; | |
210 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 211 | |
88b88a66 JK |
212 | /* increase reference count with clean state */ |
213 | mutex_lock(&fi->inmem_lock); | |
214 | get_page(page); | |
215 | list_add_tail(&new->list, &fi->inmem_pages); | |
8dcf2ff7 | 216 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 217 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
218 | |
219 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
220 | } |
221 | ||
edb27dee | 222 | int commit_inmem_pages(struct inode *inode, bool abort) |
88b88a66 JK |
223 | { |
224 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
225 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
226 | struct inmem_pages *cur, *tmp; | |
227 | bool submit_bio = false; | |
228 | struct f2fs_io_info fio = { | |
05ca3632 | 229 | .sbi = sbi, |
88b88a66 | 230 | .type = DATA, |
1e84371f | 231 | .rw = WRITE_SYNC | REQ_PRIO, |
4375a336 | 232 | .encrypted_page = NULL, |
88b88a66 | 233 | }; |
edb27dee | 234 | int err = 0; |
88b88a66 | 235 | |
0341845e JK |
236 | /* |
237 | * The abort is true only when f2fs_evict_inode is called. | |
238 | * Basically, the f2fs_evict_inode doesn't produce any data writes, so | |
239 | * that we don't need to call f2fs_balance_fs. | |
240 | * Otherwise, f2fs_gc in f2fs_balance_fs can wait forever until this | |
241 | * inode becomes free by iget_locked in f2fs_iget. | |
242 | */ | |
70c640b1 | 243 | if (!abort) { |
0341845e | 244 | f2fs_balance_fs(sbi); |
70c640b1 JK |
245 | f2fs_lock_op(sbi); |
246 | } | |
88b88a66 JK |
247 | |
248 | mutex_lock(&fi->inmem_lock); | |
249 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { | |
decd36b6 | 250 | lock_page(cur->page); |
70c640b1 | 251 | if (!abort) { |
70c640b1 | 252 | if (cur->page->mapping == inode->i_mapping) { |
6282adbf | 253 | set_page_dirty(cur->page); |
70c640b1 JK |
254 | f2fs_wait_on_page_writeback(cur->page, DATA); |
255 | if (clear_page_dirty_for_io(cur->page)) | |
256 | inode_dec_dirty_pages(inode); | |
8ce67cb0 | 257 | trace_f2fs_commit_inmem_page(cur->page, INMEM); |
05ca3632 | 258 | fio.page = cur->page; |
edb27dee | 259 | err = do_write_data_page(&fio); |
70c640b1 | 260 | submit_bio = true; |
edb27dee JK |
261 | if (err) { |
262 | unlock_page(cur->page); | |
263 | break; | |
264 | } | |
70c640b1 | 265 | } |
70c640b1 | 266 | } else { |
8ce67cb0 | 267 | trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP); |
88b88a66 | 268 | } |
decd36b6 CY |
269 | set_page_private(cur->page, 0); |
270 | ClearPagePrivate(cur->page); | |
271 | f2fs_put_page(cur->page, 1); | |
272 | ||
88b88a66 JK |
273 | list_del(&cur->list); |
274 | kmem_cache_free(inmem_entry_slab, cur); | |
8dcf2ff7 | 275 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 276 | } |
88b88a66 JK |
277 | mutex_unlock(&fi->inmem_lock); |
278 | ||
70c640b1 JK |
279 | if (!abort) { |
280 | f2fs_unlock_op(sbi); | |
281 | if (submit_bio) | |
282 | f2fs_submit_merged_bio(sbi, DATA, WRITE); | |
283 | } | |
edb27dee | 284 | return err; |
88b88a66 JK |
285 | } |
286 | ||
0a8165d7 | 287 | /* |
351df4b2 JK |
288 | * This function balances dirty node and dentry pages. |
289 | * In addition, it controls garbage collection. | |
290 | */ | |
291 | void f2fs_balance_fs(struct f2fs_sb_info *sbi) | |
292 | { | |
351df4b2 | 293 | /* |
029cd28c JK |
294 | * We should do GC or end up with checkpoint, if there are so many dirty |
295 | * dir/node pages without enough free segments. | |
351df4b2 | 296 | */ |
43727527 | 297 | if (has_not_enough_free_secs(sbi, 0)) { |
351df4b2 | 298 | mutex_lock(&sbi->gc_mutex); |
d530d4d8 | 299 | f2fs_gc(sbi, false); |
351df4b2 JK |
300 | } |
301 | } | |
302 | ||
4660f9c0 JK |
303 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
304 | { | |
1dcc336b | 305 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
306 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
307 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 308 | |
1b38dc8e JK |
309 | /* check the # of cached NAT entries */ |
310 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
311 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
312 | ||
31696580 CY |
313 | if (!available_free_memory(sbi, FREE_NIDS)) |
314 | try_to_free_nids(sbi, NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES); | |
315 | ||
1b38dc8e JK |
316 | /* checkpoint is the only way to shrink partial cached entries */ |
317 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
e5e7ea3c | 318 | excess_prefree_segs(sbi) || |
60b99b48 JK |
319 | !available_free_memory(sbi, INO_ENTRIES) || |
320 | jiffies > sbi->cp_expires) | |
4660f9c0 JK |
321 | f2fs_sync_fs(sbi->sb, true); |
322 | } | |
323 | ||
2163d198 | 324 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
325 | { |
326 | struct f2fs_sb_info *sbi = data; | |
a688b9d9 GZ |
327 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
328 | wait_queue_head_t *q = &fcc->flush_wait_queue; | |
6b4afdd7 JK |
329 | repeat: |
330 | if (kthread_should_stop()) | |
331 | return 0; | |
332 | ||
721bd4d5 | 333 | if (!llist_empty(&fcc->issue_list)) { |
740432f8 | 334 | struct bio *bio; |
6b4afdd7 JK |
335 | struct flush_cmd *cmd, *next; |
336 | int ret; | |
337 | ||
740432f8 JK |
338 | bio = f2fs_bio_alloc(0); |
339 | ||
721bd4d5 GZ |
340 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
341 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
342 | ||
6b4afdd7 JK |
343 | bio->bi_bdev = sbi->sb->s_bdev; |
344 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
345 | ||
721bd4d5 GZ |
346 | llist_for_each_entry_safe(cmd, next, |
347 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 348 | cmd->ret = ret; |
6b4afdd7 JK |
349 | complete(&cmd->wait); |
350 | } | |
a4ed23f2 | 351 | bio_put(bio); |
a688b9d9 | 352 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
353 | } |
354 | ||
a688b9d9 | 355 | wait_event_interruptible(*q, |
721bd4d5 | 356 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
357 | goto repeat; |
358 | } | |
359 | ||
360 | int f2fs_issue_flush(struct f2fs_sb_info *sbi) | |
361 | { | |
a688b9d9 | 362 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
adf8d90b | 363 | struct flush_cmd cmd; |
6b4afdd7 | 364 | |
24a9ee0f JK |
365 | trace_f2fs_issue_flush(sbi->sb, test_opt(sbi, NOBARRIER), |
366 | test_opt(sbi, FLUSH_MERGE)); | |
367 | ||
0f7b2abd JK |
368 | if (test_opt(sbi, NOBARRIER)) |
369 | return 0; | |
370 | ||
740432f8 JK |
371 | if (!test_opt(sbi, FLUSH_MERGE)) { |
372 | struct bio *bio = f2fs_bio_alloc(0); | |
373 | int ret; | |
374 | ||
375 | bio->bi_bdev = sbi->sb->s_bdev; | |
376 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
377 | bio_put(bio); | |
378 | return ret; | |
379 | } | |
6b4afdd7 | 380 | |
adf8d90b | 381 | init_completion(&cmd.wait); |
6b4afdd7 | 382 | |
721bd4d5 | 383 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 384 | |
a688b9d9 GZ |
385 | if (!fcc->dispatch_list) |
386 | wake_up(&fcc->flush_wait_queue); | |
6b4afdd7 | 387 | |
adf8d90b CY |
388 | wait_for_completion(&cmd.wait); |
389 | ||
390 | return cmd.ret; | |
6b4afdd7 JK |
391 | } |
392 | ||
2163d198 GZ |
393 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
394 | { | |
395 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
396 | struct flush_cmd_control *fcc; | |
397 | int err = 0; | |
398 | ||
399 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); | |
400 | if (!fcc) | |
401 | return -ENOMEM; | |
2163d198 | 402 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 403 | init_llist_head(&fcc->issue_list); |
6b2920a5 | 404 | SM_I(sbi)->cmd_control_info = fcc; |
2163d198 GZ |
405 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
406 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
407 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
408 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
409 | kfree(fcc); | |
6b2920a5 | 410 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
411 | return err; |
412 | } | |
2163d198 GZ |
413 | |
414 | return err; | |
415 | } | |
416 | ||
417 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi) | |
418 | { | |
6b2920a5 | 419 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
2163d198 GZ |
420 | |
421 | if (fcc && fcc->f2fs_issue_flush) | |
422 | kthread_stop(fcc->f2fs_issue_flush); | |
423 | kfree(fcc); | |
6b2920a5 | 424 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
425 | } |
426 | ||
351df4b2 JK |
427 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
428 | enum dirty_type dirty_type) | |
429 | { | |
430 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
431 | ||
432 | /* need not be added */ | |
433 | if (IS_CURSEG(sbi, segno)) | |
434 | return; | |
435 | ||
436 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
437 | dirty_i->nr_dirty[dirty_type]++; | |
438 | ||
439 | if (dirty_type == DIRTY) { | |
440 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 441 | enum dirty_type t = sentry->type; |
b2f2c390 | 442 | |
ec325b52 JK |
443 | if (unlikely(t >= DIRTY)) { |
444 | f2fs_bug_on(sbi, 1); | |
445 | return; | |
446 | } | |
4625d6aa CL |
447 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
448 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
449 | } |
450 | } | |
451 | ||
452 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
453 | enum dirty_type dirty_type) | |
454 | { | |
455 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
456 | ||
457 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
458 | dirty_i->nr_dirty[dirty_type]--; | |
459 | ||
460 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
461 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
462 | enum dirty_type t = sentry->type; | |
463 | ||
464 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
465 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 466 | |
5ec4e49f JK |
467 | if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) |
468 | clear_bit(GET_SECNO(sbi, segno), | |
469 | dirty_i->victim_secmap); | |
351df4b2 JK |
470 | } |
471 | } | |
472 | ||
0a8165d7 | 473 | /* |
351df4b2 JK |
474 | * Should not occur error such as -ENOMEM. |
475 | * Adding dirty entry into seglist is not critical operation. | |
476 | * If a given segment is one of current working segments, it won't be added. | |
477 | */ | |
8d8451af | 478 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
479 | { |
480 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
481 | unsigned short valid_blocks; | |
482 | ||
483 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
484 | return; | |
485 | ||
486 | mutex_lock(&dirty_i->seglist_lock); | |
487 | ||
488 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
489 | ||
490 | if (valid_blocks == 0) { | |
491 | __locate_dirty_segment(sbi, segno, PRE); | |
492 | __remove_dirty_segment(sbi, segno, DIRTY); | |
493 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
494 | __locate_dirty_segment(sbi, segno, DIRTY); | |
495 | } else { | |
496 | /* Recovery routine with SSR needs this */ | |
497 | __remove_dirty_segment(sbi, segno, DIRTY); | |
498 | } | |
499 | ||
500 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
501 | } |
502 | ||
1e87a78d | 503 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
504 | block_t blkstart, block_t blklen) |
505 | { | |
55cf9cb6 CY |
506 | sector_t start = SECTOR_FROM_BLOCK(blkstart); |
507 | sector_t len = SECTOR_FROM_BLOCK(blklen); | |
a66cdd98 JK |
508 | struct seg_entry *se; |
509 | unsigned int offset; | |
510 | block_t i; | |
511 | ||
512 | for (i = blkstart; i < blkstart + blklen; i++) { | |
513 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); | |
514 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
515 | ||
516 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
517 | sbi->discard_blks--; | |
518 | } | |
1661d07c | 519 | trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); |
1e87a78d JK |
520 | return blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0); |
521 | } | |
522 | ||
e90c2d28 | 523 | bool discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr) |
1e87a78d | 524 | { |
40a02be1 JK |
525 | int err = -ENOTSUPP; |
526 | ||
527 | if (test_opt(sbi, DISCARD)) { | |
528 | struct seg_entry *se = get_seg_entry(sbi, | |
529 | GET_SEGNO(sbi, blkaddr)); | |
530 | unsigned int offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
531 | ||
532 | if (f2fs_test_bit(offset, se->discard_map)) | |
e90c2d28 | 533 | return false; |
40a02be1 JK |
534 | |
535 | err = f2fs_issue_discard(sbi, blkaddr, 1); | |
536 | } | |
537 | ||
e90c2d28 | 538 | if (err) { |
381722d2 | 539 | update_meta_page(sbi, NULL, blkaddr); |
e90c2d28 CY |
540 | return true; |
541 | } | |
542 | return false; | |
37208879 JK |
543 | } |
544 | ||
adf4983b | 545 | static void __add_discard_entry(struct f2fs_sb_info *sbi, |
a66cdd98 JK |
546 | struct cp_control *cpc, struct seg_entry *se, |
547 | unsigned int start, unsigned int end) | |
b2955550 JK |
548 | { |
549 | struct list_head *head = &SM_I(sbi)->discard_list; | |
adf4983b JK |
550 | struct discard_entry *new, *last; |
551 | ||
552 | if (!list_empty(head)) { | |
553 | last = list_last_entry(head, struct discard_entry, list); | |
554 | if (START_BLOCK(sbi, cpc->trim_start) + start == | |
555 | last->blkaddr + last->len) { | |
556 | last->len += end - start; | |
557 | goto done; | |
558 | } | |
559 | } | |
560 | ||
561 | new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); | |
562 | INIT_LIST_HEAD(&new->list); | |
563 | new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; | |
564 | new->len = end - start; | |
565 | list_add_tail(&new->list, head); | |
566 | done: | |
567 | SM_I(sbi)->nr_discards += end - start; | |
adf4983b JK |
568 | } |
569 | ||
570 | static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) | |
571 | { | |
b2955550 JK |
572 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
573 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 574 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
575 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
576 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 577 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 578 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 579 | unsigned int start = 0, end = -1; |
4b2fecc8 | 580 | bool force = (cpc->reason == CP_DISCARD); |
b2955550 JK |
581 | int i; |
582 | ||
a66cdd98 | 583 | if (se->valid_blocks == max_blocks) |
b2955550 JK |
584 | return; |
585 | ||
a66cdd98 JK |
586 | if (!force) { |
587 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
912a83b5 DC |
588 | SM_I(sbi)->nr_discards >= SM_I(sbi)->max_discards) |
589 | return; | |
4b2fecc8 JK |
590 | } |
591 | ||
b2955550 JK |
592 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
593 | for (i = 0; i < entries; i++) | |
a66cdd98 | 594 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 595 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 596 | |
4b2fecc8 | 597 | while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { |
b2955550 JK |
598 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
599 | if (start >= max_blocks) | |
600 | break; | |
601 | ||
602 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
a66cdd98 | 603 | __add_discard_entry(sbi, cpc, se, start, end); |
b2955550 JK |
604 | } |
605 | } | |
606 | ||
4b2fecc8 JK |
607 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
608 | { | |
609 | struct list_head *head = &(SM_I(sbi)->discard_list); | |
610 | struct discard_entry *entry, *this; | |
611 | ||
612 | /* drop caches */ | |
613 | list_for_each_entry_safe(entry, this, head, list) { | |
614 | list_del(&entry->list); | |
615 | kmem_cache_free(discard_entry_slab, entry); | |
616 | } | |
617 | } | |
618 | ||
0a8165d7 | 619 | /* |
351df4b2 JK |
620 | * Should call clear_prefree_segments after checkpoint is done. |
621 | */ | |
622 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
623 | { | |
624 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 625 | unsigned int segno; |
351df4b2 JK |
626 | |
627 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 628 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 629 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
630 | mutex_unlock(&dirty_i->seglist_lock); |
631 | } | |
632 | ||
836b5a63 | 633 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 634 | { |
b2955550 | 635 | struct list_head *head = &(SM_I(sbi)->discard_list); |
2d7b822a | 636 | struct discard_entry *entry, *this; |
351df4b2 | 637 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 638 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 639 | unsigned int start = 0, end = -1; |
351df4b2 JK |
640 | |
641 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 642 | |
351df4b2 | 643 | while (1) { |
29e59c14 | 644 | int i; |
7cd8558b JK |
645 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
646 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 647 | break; |
7cd8558b JK |
648 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
649 | start + 1); | |
29e59c14 CL |
650 | |
651 | for (i = start; i < end; i++) | |
652 | clear_bit(i, prefree_map); | |
653 | ||
654 | dirty_i->nr_dirty[PRE] -= end - start; | |
655 | ||
656 | if (!test_opt(sbi, DISCARD)) | |
657 | continue; | |
351df4b2 | 658 | |
37208879 JK |
659 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
660 | (end - start) << sbi->log_blocks_per_seg); | |
351df4b2 JK |
661 | } |
662 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
663 | |
664 | /* send small discards */ | |
2d7b822a | 665 | list_for_each_entry_safe(entry, this, head, list) { |
836b5a63 JK |
666 | if (cpc->reason == CP_DISCARD && entry->len < cpc->trim_minlen) |
667 | goto skip; | |
37208879 | 668 | f2fs_issue_discard(sbi, entry->blkaddr, entry->len); |
f56aa1c5 | 669 | cpc->trimmed += entry->len; |
836b5a63 | 670 | skip: |
b2955550 JK |
671 | list_del(&entry->list); |
672 | SM_I(sbi)->nr_discards -= entry->len; | |
673 | kmem_cache_free(discard_entry_slab, entry); | |
674 | } | |
351df4b2 JK |
675 | } |
676 | ||
184a5cd2 | 677 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
678 | { |
679 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
680 | |
681 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 682 | sit_i->dirty_sentries++; |
184a5cd2 CY |
683 | return false; |
684 | } | |
685 | ||
686 | return true; | |
351df4b2 JK |
687 | } |
688 | ||
689 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
690 | unsigned int segno, int modified) | |
691 | { | |
692 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
693 | se->type = type; | |
694 | if (modified) | |
695 | __mark_sit_entry_dirty(sbi, segno); | |
696 | } | |
697 | ||
698 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
699 | { | |
700 | struct seg_entry *se; | |
701 | unsigned int segno, offset; | |
702 | long int new_vblocks; | |
703 | ||
704 | segno = GET_SEGNO(sbi, blkaddr); | |
705 | ||
706 | se = get_seg_entry(sbi, segno); | |
707 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 708 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 709 | |
9850cf4a | 710 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
711 | (new_vblocks > sbi->blocks_per_seg))); |
712 | ||
713 | se->valid_blocks = new_vblocks; | |
714 | se->mtime = get_mtime(sbi); | |
715 | SIT_I(sbi)->max_mtime = se->mtime; | |
716 | ||
717 | /* Update valid block bitmap */ | |
718 | if (del > 0) { | |
52aca074 | 719 | if (f2fs_test_and_set_bit(offset, se->cur_valid_map)) |
05796763 | 720 | f2fs_bug_on(sbi, 1); |
a66cdd98 JK |
721 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
722 | sbi->discard_blks--; | |
351df4b2 | 723 | } else { |
52aca074 | 724 | if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) |
05796763 | 725 | f2fs_bug_on(sbi, 1); |
a66cdd98 JK |
726 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
727 | sbi->discard_blks++; | |
351df4b2 JK |
728 | } |
729 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
730 | se->ckpt_valid_blocks += del; | |
731 | ||
732 | __mark_sit_entry_dirty(sbi, segno); | |
733 | ||
734 | /* update total number of valid blocks to be written in ckpt area */ | |
735 | SIT_I(sbi)->written_valid_blocks += del; | |
736 | ||
737 | if (sbi->segs_per_sec > 1) | |
738 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
739 | } | |
740 | ||
5e443818 | 741 | void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) |
351df4b2 | 742 | { |
5e443818 JK |
743 | update_sit_entry(sbi, new, 1); |
744 | if (GET_SEGNO(sbi, old) != NULL_SEGNO) | |
745 | update_sit_entry(sbi, old, -1); | |
746 | ||
747 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); | |
748 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); | |
351df4b2 JK |
749 | } |
750 | ||
751 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) | |
752 | { | |
753 | unsigned int segno = GET_SEGNO(sbi, addr); | |
754 | struct sit_info *sit_i = SIT_I(sbi); | |
755 | ||
9850cf4a | 756 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
757 | if (addr == NEW_ADDR) |
758 | return; | |
759 | ||
760 | /* add it into sit main buffer */ | |
761 | mutex_lock(&sit_i->sentry_lock); | |
762 | ||
763 | update_sit_entry(sbi, addr, -1); | |
764 | ||
765 | /* add it into dirty seglist */ | |
766 | locate_dirty_segment(sbi, segno); | |
767 | ||
768 | mutex_unlock(&sit_i->sentry_lock); | |
769 | } | |
770 | ||
0a8165d7 | 771 | /* |
351df4b2 JK |
772 | * This function should be resided under the curseg_mutex lock |
773 | */ | |
774 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 775 | struct f2fs_summary *sum) |
351df4b2 JK |
776 | { |
777 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
778 | void *addr = curseg->sum_blk; | |
e79efe3b | 779 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 780 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
781 | } |
782 | ||
0a8165d7 | 783 | /* |
351df4b2 JK |
784 | * Calculate the number of current summary pages for writing |
785 | */ | |
3fa06d7b | 786 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 787 | { |
351df4b2 | 788 | int valid_sum_count = 0; |
9a47938b | 789 | int i, sum_in_page; |
351df4b2 JK |
790 | |
791 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
792 | if (sbi->ckpt->alloc_type[i] == SSR) | |
793 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
794 | else { |
795 | if (for_ra) | |
796 | valid_sum_count += le16_to_cpu( | |
797 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
798 | else | |
799 | valid_sum_count += curseg_blkoff(sbi, i); | |
800 | } | |
351df4b2 JK |
801 | } |
802 | ||
9a47938b FL |
803 | sum_in_page = (PAGE_CACHE_SIZE - 2 * SUM_JOURNAL_SIZE - |
804 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; | |
805 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 806 | return 1; |
9a47938b FL |
807 | else if ((valid_sum_count - sum_in_page) <= |
808 | (PAGE_CACHE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) | |
351df4b2 JK |
809 | return 2; |
810 | return 3; | |
811 | } | |
812 | ||
0a8165d7 | 813 | /* |
351df4b2 JK |
814 | * Caller should put this summary page |
815 | */ | |
816 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
817 | { | |
818 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
819 | } | |
820 | ||
381722d2 | 821 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
822 | { |
823 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 CY |
824 | void *dst = page_address(page); |
825 | ||
826 | if (src) | |
827 | memcpy(dst, src, PAGE_CACHE_SIZE); | |
828 | else | |
829 | memset(dst, 0, PAGE_CACHE_SIZE); | |
351df4b2 JK |
830 | set_page_dirty(page); |
831 | f2fs_put_page(page, 1); | |
832 | } | |
833 | ||
381722d2 CY |
834 | static void write_sum_page(struct f2fs_sb_info *sbi, |
835 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
836 | { | |
837 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
838 | } | |
839 | ||
60374688 JK |
840 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
841 | { | |
842 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
81fb5e87 | 843 | unsigned int segno = curseg->segno + 1; |
60374688 JK |
844 | struct free_segmap_info *free_i = FREE_I(sbi); |
845 | ||
7cd8558b | 846 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) |
81fb5e87 | 847 | return !test_bit(segno, free_i->free_segmap); |
60374688 JK |
848 | return 0; |
849 | } | |
850 | ||
0a8165d7 | 851 | /* |
351df4b2 JK |
852 | * Find a new segment from the free segments bitmap to right order |
853 | * This function should be returned with success, otherwise BUG | |
854 | */ | |
855 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
856 | unsigned int *newseg, bool new_sec, int dir) | |
857 | { | |
858 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 859 | unsigned int segno, secno, zoneno; |
7cd8558b | 860 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
351df4b2 JK |
861 | unsigned int hint = *newseg / sbi->segs_per_sec; |
862 | unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); | |
863 | unsigned int left_start = hint; | |
864 | bool init = true; | |
865 | int go_left = 0; | |
866 | int i; | |
867 | ||
1a118ccf | 868 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
869 | |
870 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
871 | segno = find_next_zero_bit(free_i->free_segmap, | |
7cd8558b | 872 | MAIN_SEGS(sbi), *newseg + 1); |
33afa7fd JK |
873 | if (segno - *newseg < sbi->segs_per_sec - |
874 | (*newseg % sbi->segs_per_sec)) | |
351df4b2 JK |
875 | goto got_it; |
876 | } | |
877 | find_other_zone: | |
7cd8558b JK |
878 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
879 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
880 | if (dir == ALLOC_RIGHT) { |
881 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
882 | MAIN_SECS(sbi), 0); |
883 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
884 | } else { |
885 | go_left = 1; | |
886 | left_start = hint - 1; | |
887 | } | |
888 | } | |
889 | if (go_left == 0) | |
890 | goto skip_left; | |
891 | ||
892 | while (test_bit(left_start, free_i->free_secmap)) { | |
893 | if (left_start > 0) { | |
894 | left_start--; | |
895 | continue; | |
896 | } | |
897 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
898 | MAIN_SECS(sbi), 0); |
899 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
900 | break; |
901 | } | |
902 | secno = left_start; | |
903 | skip_left: | |
904 | hint = secno; | |
905 | segno = secno * sbi->segs_per_sec; | |
906 | zoneno = secno / sbi->secs_per_zone; | |
907 | ||
908 | /* give up on finding another zone */ | |
909 | if (!init) | |
910 | goto got_it; | |
911 | if (sbi->secs_per_zone == 1) | |
912 | goto got_it; | |
913 | if (zoneno == old_zoneno) | |
914 | goto got_it; | |
915 | if (dir == ALLOC_LEFT) { | |
916 | if (!go_left && zoneno + 1 >= total_zones) | |
917 | goto got_it; | |
918 | if (go_left && zoneno == 0) | |
919 | goto got_it; | |
920 | } | |
921 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
922 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
923 | break; | |
924 | ||
925 | if (i < NR_CURSEG_TYPE) { | |
926 | /* zone is in user, try another */ | |
927 | if (go_left) | |
928 | hint = zoneno * sbi->secs_per_zone - 1; | |
929 | else if (zoneno + 1 >= total_zones) | |
930 | hint = 0; | |
931 | else | |
932 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
933 | init = false; | |
934 | goto find_other_zone; | |
935 | } | |
936 | got_it: | |
937 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 938 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
939 | __set_inuse(sbi, segno); |
940 | *newseg = segno; | |
1a118ccf | 941 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
942 | } |
943 | ||
944 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
945 | { | |
946 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
947 | struct summary_footer *sum_footer; | |
948 | ||
949 | curseg->segno = curseg->next_segno; | |
950 | curseg->zone = GET_ZONENO_FROM_SEGNO(sbi, curseg->segno); | |
951 | curseg->next_blkoff = 0; | |
952 | curseg->next_segno = NULL_SEGNO; | |
953 | ||
954 | sum_footer = &(curseg->sum_blk->footer); | |
955 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
956 | if (IS_DATASEG(type)) | |
957 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
958 | if (IS_NODESEG(type)) | |
959 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
960 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
961 | } | |
962 | ||
0a8165d7 | 963 | /* |
351df4b2 JK |
964 | * Allocate a current working segment. |
965 | * This function always allocates a free segment in LFS manner. | |
966 | */ | |
967 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
968 | { | |
969 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
970 | unsigned int segno = curseg->segno; | |
971 | int dir = ALLOC_LEFT; | |
972 | ||
973 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 974 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
975 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
976 | dir = ALLOC_RIGHT; | |
977 | ||
978 | if (test_opt(sbi, NOHEAP)) | |
979 | dir = ALLOC_RIGHT; | |
980 | ||
981 | get_new_segment(sbi, &segno, new_sec, dir); | |
982 | curseg->next_segno = segno; | |
983 | reset_curseg(sbi, type, 1); | |
984 | curseg->alloc_type = LFS; | |
985 | } | |
986 | ||
987 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
988 | struct curseg_info *seg, block_t start) | |
989 | { | |
990 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 991 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 992 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
993 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
994 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
995 | int i, pos; | |
996 | ||
997 | for (i = 0; i < entries; i++) | |
998 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
999 | ||
1000 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
1001 | ||
1002 | seg->next_blkoff = pos; | |
351df4b2 JK |
1003 | } |
1004 | ||
0a8165d7 | 1005 | /* |
351df4b2 JK |
1006 | * If a segment is written by LFS manner, next block offset is just obtained |
1007 | * by increasing the current block offset. However, if a segment is written by | |
1008 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
1009 | */ | |
1010 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
1011 | struct curseg_info *seg) | |
1012 | { | |
1013 | if (seg->alloc_type == SSR) | |
1014 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
1015 | else | |
1016 | seg->next_blkoff++; | |
1017 | } | |
1018 | ||
0a8165d7 | 1019 | /* |
e1c42045 | 1020 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
1021 | * manner, so it should recover the existing segment information of valid blocks |
1022 | */ | |
1023 | static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) | |
1024 | { | |
1025 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
1026 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1027 | unsigned int new_segno = curseg->next_segno; | |
1028 | struct f2fs_summary_block *sum_node; | |
1029 | struct page *sum_page; | |
1030 | ||
1031 | write_sum_page(sbi, curseg->sum_blk, | |
1032 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
1033 | __set_test_and_inuse(sbi, new_segno); | |
1034 | ||
1035 | mutex_lock(&dirty_i->seglist_lock); | |
1036 | __remove_dirty_segment(sbi, new_segno, PRE); | |
1037 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
1038 | mutex_unlock(&dirty_i->seglist_lock); | |
1039 | ||
1040 | reset_curseg(sbi, type, 1); | |
1041 | curseg->alloc_type = SSR; | |
1042 | __next_free_blkoff(sbi, curseg, 0); | |
1043 | ||
1044 | if (reuse) { | |
1045 | sum_page = get_sum_page(sbi, new_segno); | |
1046 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
1047 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
1048 | f2fs_put_page(sum_page, 1); | |
1049 | } | |
1050 | } | |
1051 | ||
43727527 JK |
1052 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
1053 | { | |
1054 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1055 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
1056 | ||
1057 | if (IS_NODESEG(type) || !has_not_enough_free_secs(sbi, 0)) | |
1058 | return v_ops->get_victim(sbi, | |
1059 | &(curseg)->next_segno, BG_GC, type, SSR); | |
1060 | ||
1061 | /* For data segments, let's do SSR more intensively */ | |
1062 | for (; type >= CURSEG_HOT_DATA; type--) | |
1063 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, | |
1064 | BG_GC, type, SSR)) | |
1065 | return 1; | |
1066 | return 0; | |
1067 | } | |
1068 | ||
351df4b2 JK |
1069 | /* |
1070 | * flush out current segment and replace it with new segment | |
1071 | * This function should be returned with success, otherwise BUG | |
1072 | */ | |
1073 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
1074 | int type, bool force) | |
1075 | { | |
1076 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
351df4b2 | 1077 | |
7b405275 | 1078 | if (force) |
351df4b2 | 1079 | new_curseg(sbi, type, true); |
7b405275 | 1080 | else if (type == CURSEG_WARM_NODE) |
351df4b2 | 1081 | new_curseg(sbi, type, false); |
60374688 JK |
1082 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
1083 | new_curseg(sbi, type, false); | |
351df4b2 JK |
1084 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
1085 | change_curseg(sbi, type, true); | |
1086 | else | |
1087 | new_curseg(sbi, type, false); | |
dcdfff65 JK |
1088 | |
1089 | stat_inc_seg_type(sbi, curseg); | |
351df4b2 JK |
1090 | } |
1091 | ||
38aa0889 JK |
1092 | static void __allocate_new_segments(struct f2fs_sb_info *sbi, int type) |
1093 | { | |
1094 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1095 | unsigned int old_segno; | |
1096 | ||
1097 | old_segno = curseg->segno; | |
1098 | SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true); | |
1099 | locate_dirty_segment(sbi, old_segno); | |
1100 | } | |
1101 | ||
351df4b2 JK |
1102 | void allocate_new_segments(struct f2fs_sb_info *sbi) |
1103 | { | |
351df4b2 JK |
1104 | int i; |
1105 | ||
38aa0889 JK |
1106 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) |
1107 | __allocate_new_segments(sbi, i); | |
351df4b2 JK |
1108 | } |
1109 | ||
1110 | static const struct segment_allocation default_salloc_ops = { | |
1111 | .allocate_segment = allocate_segment_by_default, | |
1112 | }; | |
1113 | ||
4b2fecc8 JK |
1114 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
1115 | { | |
f7ef9b83 JK |
1116 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
1117 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
4b2fecc8 JK |
1118 | unsigned int start_segno, end_segno; |
1119 | struct cp_control cpc; | |
1120 | ||
836b5a63 | 1121 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
1122 | return -EINVAL; |
1123 | ||
9bd27ae4 | 1124 | cpc.trimmed = 0; |
7cd8558b | 1125 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
1126 | goto out; |
1127 | ||
1128 | /* start/end segment number in main_area */ | |
7cd8558b JK |
1129 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
1130 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
1131 | GET_SEGNO(sbi, end); | |
4b2fecc8 | 1132 | cpc.reason = CP_DISCARD; |
836b5a63 | 1133 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
1134 | |
1135 | /* do checkpoint to issue discard commands safely */ | |
bba681cb JK |
1136 | for (; start_segno <= end_segno; start_segno = cpc.trim_end + 1) { |
1137 | cpc.trim_start = start_segno; | |
a66cdd98 JK |
1138 | |
1139 | if (sbi->discard_blks == 0) | |
1140 | break; | |
1141 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
1142 | cpc.trim_end = end_segno; | |
1143 | else | |
1144 | cpc.trim_end = min_t(unsigned int, | |
1145 | rounddown(start_segno + | |
bba681cb JK |
1146 | BATCHED_TRIM_SEGMENTS(sbi), |
1147 | sbi->segs_per_sec) - 1, end_segno); | |
1148 | ||
1149 | mutex_lock(&sbi->gc_mutex); | |
1150 | write_checkpoint(sbi, &cpc); | |
1151 | mutex_unlock(&sbi->gc_mutex); | |
1152 | } | |
4b2fecc8 | 1153 | out: |
f7ef9b83 | 1154 | range->len = F2FS_BLK_TO_BYTES(cpc.trimmed); |
4b2fecc8 JK |
1155 | return 0; |
1156 | } | |
1157 | ||
351df4b2 JK |
1158 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
1159 | { | |
1160 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1161 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
1162 | return true; | |
1163 | return false; | |
1164 | } | |
1165 | ||
1166 | static int __get_segment_type_2(struct page *page, enum page_type p_type) | |
1167 | { | |
1168 | if (p_type == DATA) | |
1169 | return CURSEG_HOT_DATA; | |
1170 | else | |
1171 | return CURSEG_HOT_NODE; | |
1172 | } | |
1173 | ||
1174 | static int __get_segment_type_4(struct page *page, enum page_type p_type) | |
1175 | { | |
1176 | if (p_type == DATA) { | |
1177 | struct inode *inode = page->mapping->host; | |
1178 | ||
1179 | if (S_ISDIR(inode->i_mode)) | |
1180 | return CURSEG_HOT_DATA; | |
1181 | else | |
1182 | return CURSEG_COLD_DATA; | |
1183 | } else { | |
a344b9fd JK |
1184 | if (IS_DNODE(page) && is_cold_node(page)) |
1185 | return CURSEG_WARM_NODE; | |
351df4b2 JK |
1186 | else |
1187 | return CURSEG_COLD_NODE; | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | static int __get_segment_type_6(struct page *page, enum page_type p_type) | |
1192 | { | |
1193 | if (p_type == DATA) { | |
1194 | struct inode *inode = page->mapping->host; | |
1195 | ||
1196 | if (S_ISDIR(inode->i_mode)) | |
1197 | return CURSEG_HOT_DATA; | |
354a3399 | 1198 | else if (is_cold_data(page) || file_is_cold(inode)) |
351df4b2 JK |
1199 | return CURSEG_COLD_DATA; |
1200 | else | |
1201 | return CURSEG_WARM_DATA; | |
1202 | } else { | |
1203 | if (IS_DNODE(page)) | |
1204 | return is_cold_node(page) ? CURSEG_WARM_NODE : | |
1205 | CURSEG_HOT_NODE; | |
1206 | else | |
1207 | return CURSEG_COLD_NODE; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | static int __get_segment_type(struct page *page, enum page_type p_type) | |
1212 | { | |
4081363f | 1213 | switch (F2FS_P_SB(page)->active_logs) { |
351df4b2 JK |
1214 | case 2: |
1215 | return __get_segment_type_2(page, p_type); | |
1216 | case 4: | |
1217 | return __get_segment_type_4(page, p_type); | |
351df4b2 | 1218 | } |
12a67146 | 1219 | /* NR_CURSEG_TYPE(6) logs by default */ |
9850cf4a JK |
1220 | f2fs_bug_on(F2FS_P_SB(page), |
1221 | F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); | |
12a67146 | 1222 | return __get_segment_type_6(page, p_type); |
351df4b2 JK |
1223 | } |
1224 | ||
bfad7c2d JK |
1225 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
1226 | block_t old_blkaddr, block_t *new_blkaddr, | |
1227 | struct f2fs_summary *sum, int type) | |
351df4b2 JK |
1228 | { |
1229 | struct sit_info *sit_i = SIT_I(sbi); | |
1230 | struct curseg_info *curseg; | |
38aa0889 JK |
1231 | bool direct_io = (type == CURSEG_DIRECT_IO); |
1232 | ||
1233 | type = direct_io ? CURSEG_WARM_DATA : type; | |
351df4b2 | 1234 | |
351df4b2 JK |
1235 | curseg = CURSEG_I(sbi, type); |
1236 | ||
1237 | mutex_lock(&curseg->curseg_mutex); | |
21cb1d99 | 1238 | mutex_lock(&sit_i->sentry_lock); |
351df4b2 | 1239 | |
38aa0889 | 1240 | /* direct_io'ed data is aligned to the segment for better performance */ |
47e70ca4 JK |
1241 | if (direct_io && curseg->next_blkoff && |
1242 | !has_not_enough_free_secs(sbi, 0)) | |
38aa0889 JK |
1243 | __allocate_new_segments(sbi, type); |
1244 | ||
351df4b2 | 1245 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
351df4b2 JK |
1246 | |
1247 | /* | |
1248 | * __add_sum_entry should be resided under the curseg_mutex | |
1249 | * because, this function updates a summary entry in the | |
1250 | * current summary block. | |
1251 | */ | |
e79efe3b | 1252 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1253 | |
351df4b2 | 1254 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
1255 | |
1256 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 1257 | |
5e443818 JK |
1258 | if (!__has_curseg_space(sbi, type)) |
1259 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
351df4b2 JK |
1260 | /* |
1261 | * SIT information should be updated before segment allocation, | |
1262 | * since SSR needs latest valid block information. | |
1263 | */ | |
1264 | refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); | |
5e443818 | 1265 | |
351df4b2 JK |
1266 | mutex_unlock(&sit_i->sentry_lock); |
1267 | ||
bfad7c2d | 1268 | if (page && IS_NODESEG(type)) |
351df4b2 JK |
1269 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
1270 | ||
bfad7c2d JK |
1271 | mutex_unlock(&curseg->curseg_mutex); |
1272 | } | |
1273 | ||
05ca3632 | 1274 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 1275 | { |
05ca3632 | 1276 | int type = __get_segment_type(fio->page, fio->type); |
bfad7c2d | 1277 | |
05ca3632 JK |
1278 | allocate_data_block(fio->sbi, fio->page, fio->blk_addr, |
1279 | &fio->blk_addr, sum, type); | |
bfad7c2d | 1280 | |
351df4b2 | 1281 | /* writeout dirty page into bdev */ |
05ca3632 | 1282 | f2fs_submit_page_mbio(fio); |
351df4b2 JK |
1283 | } |
1284 | ||
577e3495 | 1285 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) |
351df4b2 | 1286 | { |
458e6197 | 1287 | struct f2fs_io_info fio = { |
05ca3632 | 1288 | .sbi = sbi, |
458e6197 | 1289 | .type = META, |
cf04e8eb JK |
1290 | .rw = WRITE_SYNC | REQ_META | REQ_PRIO, |
1291 | .blk_addr = page->index, | |
05ca3632 | 1292 | .page = page, |
4375a336 | 1293 | .encrypted_page = NULL, |
458e6197 JK |
1294 | }; |
1295 | ||
351df4b2 | 1296 | set_page_writeback(page); |
05ca3632 | 1297 | f2fs_submit_page_mbio(&fio); |
351df4b2 JK |
1298 | } |
1299 | ||
05ca3632 | 1300 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
1301 | { |
1302 | struct f2fs_summary sum; | |
05ca3632 | 1303 | |
351df4b2 | 1304 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 1305 | do_write_page(&sum, fio); |
351df4b2 JK |
1306 | } |
1307 | ||
05ca3632 | 1308 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 1309 | { |
05ca3632 | 1310 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
1311 | struct f2fs_summary sum; |
1312 | struct node_info ni; | |
1313 | ||
9850cf4a | 1314 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
1315 | get_node_info(sbi, dn->nid, &ni); |
1316 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 1317 | do_write_page(&sum, fio); |
e1509cf2 | 1318 | dn->data_blkaddr = fio->blk_addr; |
351df4b2 JK |
1319 | } |
1320 | ||
05ca3632 | 1321 | void rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 1322 | { |
05ca3632 JK |
1323 | stat_inc_inplace_blocks(fio->sbi); |
1324 | f2fs_submit_page_mbio(fio); | |
351df4b2 JK |
1325 | } |
1326 | ||
528e3459 CY |
1327 | static void __f2fs_replace_block(struct f2fs_sb_info *sbi, |
1328 | struct f2fs_summary *sum, | |
19f106bc CY |
1329 | block_t old_blkaddr, block_t new_blkaddr, |
1330 | bool recover_curseg) | |
351df4b2 JK |
1331 | { |
1332 | struct sit_info *sit_i = SIT_I(sbi); | |
1333 | struct curseg_info *curseg; | |
1334 | unsigned int segno, old_cursegno; | |
1335 | struct seg_entry *se; | |
1336 | int type; | |
19f106bc | 1337 | unsigned short old_blkoff; |
351df4b2 JK |
1338 | |
1339 | segno = GET_SEGNO(sbi, new_blkaddr); | |
1340 | se = get_seg_entry(sbi, segno); | |
1341 | type = se->type; | |
1342 | ||
19f106bc CY |
1343 | if (!recover_curseg) { |
1344 | /* for recovery flow */ | |
1345 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
1346 | if (old_blkaddr == NULL_ADDR) | |
1347 | type = CURSEG_COLD_DATA; | |
1348 | else | |
1349 | type = CURSEG_WARM_DATA; | |
1350 | } | |
1351 | } else { | |
1352 | if (!IS_CURSEG(sbi, segno)) | |
351df4b2 JK |
1353 | type = CURSEG_WARM_DATA; |
1354 | } | |
19f106bc | 1355 | |
351df4b2 JK |
1356 | curseg = CURSEG_I(sbi, type); |
1357 | ||
1358 | mutex_lock(&curseg->curseg_mutex); | |
1359 | mutex_lock(&sit_i->sentry_lock); | |
1360 | ||
1361 | old_cursegno = curseg->segno; | |
19f106bc | 1362 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
1363 | |
1364 | /* change the current segment */ | |
1365 | if (segno != curseg->segno) { | |
1366 | curseg->next_segno = segno; | |
1367 | change_curseg(sbi, type, true); | |
1368 | } | |
1369 | ||
491c0854 | 1370 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 1371 | __add_sum_entry(sbi, type, sum); |
351df4b2 JK |
1372 | |
1373 | refresh_sit_entry(sbi, old_blkaddr, new_blkaddr); | |
351df4b2 | 1374 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 1375 | |
19f106bc CY |
1376 | if (recover_curseg) { |
1377 | if (old_cursegno != curseg->segno) { | |
1378 | curseg->next_segno = old_cursegno; | |
1379 | change_curseg(sbi, type, true); | |
1380 | } | |
1381 | curseg->next_blkoff = old_blkoff; | |
1382 | } | |
1383 | ||
351df4b2 JK |
1384 | mutex_unlock(&sit_i->sentry_lock); |
1385 | mutex_unlock(&curseg->curseg_mutex); | |
1386 | } | |
1387 | ||
528e3459 CY |
1388 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
1389 | block_t old_addr, block_t new_addr, | |
1390 | unsigned char version, bool recover_curseg) | |
1391 | { | |
1392 | struct f2fs_summary sum; | |
1393 | ||
1394 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
1395 | ||
1396 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, recover_curseg); | |
1397 | ||
1398 | dn->data_blkaddr = new_addr; | |
1399 | set_data_blkaddr(dn); | |
1400 | f2fs_update_extent_cache(dn); | |
1401 | } | |
1402 | ||
df0f8dc0 CY |
1403 | static inline bool is_merged_page(struct f2fs_sb_info *sbi, |
1404 | struct page *page, enum page_type type) | |
1405 | { | |
1406 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
1407 | struct f2fs_bio_info *io = &sbi->write_io[btype]; | |
df0f8dc0 | 1408 | struct bio_vec *bvec; |
4375a336 | 1409 | struct page *target; |
df0f8dc0 CY |
1410 | int i; |
1411 | ||
1412 | down_read(&io->io_rwsem); | |
4375a336 JK |
1413 | if (!io->bio) { |
1414 | up_read(&io->io_rwsem); | |
1415 | return false; | |
1416 | } | |
df0f8dc0 | 1417 | |
ce23447f | 1418 | bio_for_each_segment_all(bvec, io->bio, i) { |
4375a336 JK |
1419 | |
1420 | if (bvec->bv_page->mapping) { | |
1421 | target = bvec->bv_page; | |
1422 | } else { | |
1423 | struct f2fs_crypto_ctx *ctx; | |
1424 | ||
1425 | /* encrypted page */ | |
1426 | ctx = (struct f2fs_crypto_ctx *)page_private( | |
1427 | bvec->bv_page); | |
ca40b030 | 1428 | target = ctx->w.control_page; |
4375a336 JK |
1429 | } |
1430 | ||
1431 | if (page == target) { | |
df0f8dc0 CY |
1432 | up_read(&io->io_rwsem); |
1433 | return true; | |
1434 | } | |
1435 | } | |
1436 | ||
df0f8dc0 CY |
1437 | up_read(&io->io_rwsem); |
1438 | return false; | |
1439 | } | |
1440 | ||
93dfe2ac | 1441 | void f2fs_wait_on_page_writeback(struct page *page, |
5514f0aa | 1442 | enum page_type type) |
93dfe2ac | 1443 | { |
93dfe2ac | 1444 | if (PageWriteback(page)) { |
4081363f JK |
1445 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
1446 | ||
df0f8dc0 CY |
1447 | if (is_merged_page(sbi, page, type)) |
1448 | f2fs_submit_merged_bio(sbi, type, WRITE); | |
93dfe2ac JK |
1449 | wait_on_page_writeback(page); |
1450 | } | |
1451 | } | |
1452 | ||
351df4b2 JK |
1453 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
1454 | { | |
1455 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1456 | struct curseg_info *seg_i; | |
1457 | unsigned char *kaddr; | |
1458 | struct page *page; | |
1459 | block_t start; | |
1460 | int i, j, offset; | |
1461 | ||
1462 | start = start_sum_block(sbi); | |
1463 | ||
1464 | page = get_meta_page(sbi, start++); | |
1465 | kaddr = (unsigned char *)page_address(page); | |
1466 | ||
1467 | /* Step 1: restore nat cache */ | |
1468 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
1469 | memcpy(&seg_i->sum_blk->n_nats, kaddr, SUM_JOURNAL_SIZE); | |
1470 | ||
1471 | /* Step 2: restore sit cache */ | |
1472 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1473 | memcpy(&seg_i->sum_blk->n_sits, kaddr + SUM_JOURNAL_SIZE, | |
1474 | SUM_JOURNAL_SIZE); | |
1475 | offset = 2 * SUM_JOURNAL_SIZE; | |
1476 | ||
1477 | /* Step 3: restore summary entries */ | |
1478 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1479 | unsigned short blk_off; | |
1480 | unsigned int segno; | |
1481 | ||
1482 | seg_i = CURSEG_I(sbi, i); | |
1483 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
1484 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
1485 | seg_i->next_segno = segno; | |
1486 | reset_curseg(sbi, i, 0); | |
1487 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
1488 | seg_i->next_blkoff = blk_off; | |
1489 | ||
1490 | if (seg_i->alloc_type == SSR) | |
1491 | blk_off = sbi->blocks_per_seg; | |
1492 | ||
1493 | for (j = 0; j < blk_off; j++) { | |
1494 | struct f2fs_summary *s; | |
1495 | s = (struct f2fs_summary *)(kaddr + offset); | |
1496 | seg_i->sum_blk->entries[j] = *s; | |
1497 | offset += SUMMARY_SIZE; | |
1498 | if (offset + SUMMARY_SIZE <= PAGE_CACHE_SIZE - | |
1499 | SUM_FOOTER_SIZE) | |
1500 | continue; | |
1501 | ||
1502 | f2fs_put_page(page, 1); | |
1503 | page = NULL; | |
1504 | ||
1505 | page = get_meta_page(sbi, start++); | |
1506 | kaddr = (unsigned char *)page_address(page); | |
1507 | offset = 0; | |
1508 | } | |
1509 | } | |
1510 | f2fs_put_page(page, 1); | |
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
1515 | { | |
1516 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1517 | struct f2fs_summary_block *sum; | |
1518 | struct curseg_info *curseg; | |
1519 | struct page *new; | |
1520 | unsigned short blk_off; | |
1521 | unsigned int segno = 0; | |
1522 | block_t blk_addr = 0; | |
1523 | ||
1524 | /* get segment number and block addr */ | |
1525 | if (IS_DATASEG(type)) { | |
1526 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
1527 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
1528 | CURSEG_HOT_DATA]); | |
119ee914 | 1529 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1530 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
1531 | else | |
1532 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
1533 | } else { | |
1534 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
1535 | CURSEG_HOT_NODE]); | |
1536 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
1537 | CURSEG_HOT_NODE]); | |
119ee914 | 1538 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1539 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
1540 | type - CURSEG_HOT_NODE); | |
1541 | else | |
1542 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
1543 | } | |
1544 | ||
1545 | new = get_meta_page(sbi, blk_addr); | |
1546 | sum = (struct f2fs_summary_block *)page_address(new); | |
1547 | ||
1548 | if (IS_NODESEG(type)) { | |
119ee914 | 1549 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
1550 | struct f2fs_summary *ns = &sum->entries[0]; |
1551 | int i; | |
1552 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
1553 | ns->version = 0; | |
1554 | ns->ofs_in_node = 0; | |
1555 | } | |
1556 | } else { | |
d653788a GZ |
1557 | int err; |
1558 | ||
1559 | err = restore_node_summary(sbi, segno, sum); | |
1560 | if (err) { | |
351df4b2 | 1561 | f2fs_put_page(new, 1); |
d653788a | 1562 | return err; |
351df4b2 JK |
1563 | } |
1564 | } | |
1565 | } | |
1566 | ||
1567 | /* set uncompleted segment to curseg */ | |
1568 | curseg = CURSEG_I(sbi, type); | |
1569 | mutex_lock(&curseg->curseg_mutex); | |
1570 | memcpy(curseg->sum_blk, sum, PAGE_CACHE_SIZE); | |
1571 | curseg->next_segno = segno; | |
1572 | reset_curseg(sbi, type, 0); | |
1573 | curseg->alloc_type = ckpt->alloc_type[type]; | |
1574 | curseg->next_blkoff = blk_off; | |
1575 | mutex_unlock(&curseg->curseg_mutex); | |
1576 | f2fs_put_page(new, 1); | |
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
1581 | { | |
1582 | int type = CURSEG_HOT_DATA; | |
e4fc5fbf | 1583 | int err; |
351df4b2 | 1584 | |
25ca923b | 1585 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
1586 | int npages = npages_for_summary_flush(sbi, true); |
1587 | ||
1588 | if (npages >= 2) | |
1589 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
1590 | META_CP); | |
1591 | ||
351df4b2 JK |
1592 | /* restore for compacted data summary */ |
1593 | if (read_compacted_summaries(sbi)) | |
1594 | return -EINVAL; | |
1595 | type = CURSEG_HOT_NODE; | |
1596 | } | |
1597 | ||
119ee914 | 1598 | if (__exist_node_summaries(sbi)) |
3fa06d7b CY |
1599 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
1600 | NR_CURSEG_TYPE - type, META_CP); | |
1601 | ||
e4fc5fbf CY |
1602 | for (; type <= CURSEG_COLD_NODE; type++) { |
1603 | err = read_normal_summaries(sbi, type); | |
1604 | if (err) | |
1605 | return err; | |
1606 | } | |
1607 | ||
351df4b2 JK |
1608 | return 0; |
1609 | } | |
1610 | ||
1611 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
1612 | { | |
1613 | struct page *page; | |
1614 | unsigned char *kaddr; | |
1615 | struct f2fs_summary *summary; | |
1616 | struct curseg_info *seg_i; | |
1617 | int written_size = 0; | |
1618 | int i, j; | |
1619 | ||
1620 | page = grab_meta_page(sbi, blkaddr++); | |
1621 | kaddr = (unsigned char *)page_address(page); | |
1622 | ||
1623 | /* Step 1: write nat cache */ | |
1624 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
1625 | memcpy(kaddr, &seg_i->sum_blk->n_nats, SUM_JOURNAL_SIZE); | |
1626 | written_size += SUM_JOURNAL_SIZE; | |
1627 | ||
1628 | /* Step 2: write sit cache */ | |
1629 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1630 | memcpy(kaddr + written_size, &seg_i->sum_blk->n_sits, | |
1631 | SUM_JOURNAL_SIZE); | |
1632 | written_size += SUM_JOURNAL_SIZE; | |
1633 | ||
351df4b2 JK |
1634 | /* Step 3: write summary entries */ |
1635 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1636 | unsigned short blkoff; | |
1637 | seg_i = CURSEG_I(sbi, i); | |
1638 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1639 | blkoff = sbi->blocks_per_seg; | |
1640 | else | |
1641 | blkoff = curseg_blkoff(sbi, i); | |
1642 | ||
1643 | for (j = 0; j < blkoff; j++) { | |
1644 | if (!page) { | |
1645 | page = grab_meta_page(sbi, blkaddr++); | |
1646 | kaddr = (unsigned char *)page_address(page); | |
1647 | written_size = 0; | |
1648 | } | |
1649 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
1650 | *summary = seg_i->sum_blk->entries[j]; | |
1651 | written_size += SUMMARY_SIZE; | |
351df4b2 JK |
1652 | |
1653 | if (written_size + SUMMARY_SIZE <= PAGE_CACHE_SIZE - | |
1654 | SUM_FOOTER_SIZE) | |
1655 | continue; | |
1656 | ||
e8d61a74 | 1657 | set_page_dirty(page); |
351df4b2 JK |
1658 | f2fs_put_page(page, 1); |
1659 | page = NULL; | |
1660 | } | |
1661 | } | |
e8d61a74 CY |
1662 | if (page) { |
1663 | set_page_dirty(page); | |
351df4b2 | 1664 | f2fs_put_page(page, 1); |
e8d61a74 | 1665 | } |
351df4b2 JK |
1666 | } |
1667 | ||
1668 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
1669 | block_t blkaddr, int type) | |
1670 | { | |
1671 | int i, end; | |
1672 | if (IS_DATASEG(type)) | |
1673 | end = type + NR_CURSEG_DATA_TYPE; | |
1674 | else | |
1675 | end = type + NR_CURSEG_NODE_TYPE; | |
1676 | ||
1677 | for (i = type; i < end; i++) { | |
1678 | struct curseg_info *sum = CURSEG_I(sbi, i); | |
1679 | mutex_lock(&sum->curseg_mutex); | |
1680 | write_sum_page(sbi, sum->sum_blk, blkaddr + (i - type)); | |
1681 | mutex_unlock(&sum->curseg_mutex); | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1686 | { | |
25ca923b | 1687 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
1688 | write_compacted_summaries(sbi, start_blk); |
1689 | else | |
1690 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
1691 | } | |
1692 | ||
1693 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1694 | { | |
119ee914 | 1695 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
1696 | } |
1697 | ||
1698 | int lookup_journal_in_cursum(struct f2fs_summary_block *sum, int type, | |
1699 | unsigned int val, int alloc) | |
1700 | { | |
1701 | int i; | |
1702 | ||
1703 | if (type == NAT_JOURNAL) { | |
1704 | for (i = 0; i < nats_in_cursum(sum); i++) { | |
1705 | if (le32_to_cpu(nid_in_journal(sum, i)) == val) | |
1706 | return i; | |
1707 | } | |
1708 | if (alloc && nats_in_cursum(sum) < NAT_JOURNAL_ENTRIES) | |
1709 | return update_nats_in_cursum(sum, 1); | |
1710 | } else if (type == SIT_JOURNAL) { | |
1711 | for (i = 0; i < sits_in_cursum(sum); i++) | |
1712 | if (le32_to_cpu(segno_in_journal(sum, i)) == val) | |
1713 | return i; | |
1714 | if (alloc && sits_in_cursum(sum) < SIT_JOURNAL_ENTRIES) | |
1715 | return update_sits_in_cursum(sum, 1); | |
1716 | } | |
1717 | return -1; | |
1718 | } | |
1719 | ||
1720 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
1721 | unsigned int segno) | |
1722 | { | |
2cc22186 | 1723 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
1724 | } |
1725 | ||
1726 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
1727 | unsigned int start) | |
1728 | { | |
1729 | struct sit_info *sit_i = SIT_I(sbi); | |
1730 | struct page *src_page, *dst_page; | |
1731 | pgoff_t src_off, dst_off; | |
1732 | void *src_addr, *dst_addr; | |
1733 | ||
1734 | src_off = current_sit_addr(sbi, start); | |
1735 | dst_off = next_sit_addr(sbi, src_off); | |
1736 | ||
1737 | /* get current sit block page without lock */ | |
1738 | src_page = get_meta_page(sbi, src_off); | |
1739 | dst_page = grab_meta_page(sbi, dst_off); | |
9850cf4a | 1740 | f2fs_bug_on(sbi, PageDirty(src_page)); |
351df4b2 JK |
1741 | |
1742 | src_addr = page_address(src_page); | |
1743 | dst_addr = page_address(dst_page); | |
1744 | memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); | |
1745 | ||
1746 | set_page_dirty(dst_page); | |
1747 | f2fs_put_page(src_page, 1); | |
1748 | ||
1749 | set_to_next_sit(sit_i, start); | |
1750 | ||
1751 | return dst_page; | |
1752 | } | |
1753 | ||
184a5cd2 CY |
1754 | static struct sit_entry_set *grab_sit_entry_set(void) |
1755 | { | |
1756 | struct sit_entry_set *ses = | |
80c54505 | 1757 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
1758 | |
1759 | ses->entry_cnt = 0; | |
1760 | INIT_LIST_HEAD(&ses->set_list); | |
1761 | return ses; | |
1762 | } | |
1763 | ||
1764 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
1765 | { | |
1766 | list_del(&ses->set_list); | |
1767 | kmem_cache_free(sit_entry_set_slab, ses); | |
1768 | } | |
1769 | ||
1770 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
1771 | struct list_head *head) | |
1772 | { | |
1773 | struct sit_entry_set *next = ses; | |
1774 | ||
1775 | if (list_is_last(&ses->set_list, head)) | |
1776 | return; | |
1777 | ||
1778 | list_for_each_entry_continue(next, head, set_list) | |
1779 | if (ses->entry_cnt <= next->entry_cnt) | |
1780 | break; | |
1781 | ||
1782 | list_move_tail(&ses->set_list, &next->set_list); | |
1783 | } | |
1784 | ||
1785 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
1786 | { | |
1787 | struct sit_entry_set *ses; | |
1788 | unsigned int start_segno = START_SEGNO(segno); | |
1789 | ||
1790 | list_for_each_entry(ses, head, set_list) { | |
1791 | if (ses->start_segno == start_segno) { | |
1792 | ses->entry_cnt++; | |
1793 | adjust_sit_entry_set(ses, head); | |
1794 | return; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | ses = grab_sit_entry_set(); | |
1799 | ||
1800 | ses->start_segno = start_segno; | |
1801 | ses->entry_cnt++; | |
1802 | list_add(&ses->set_list, head); | |
1803 | } | |
1804 | ||
1805 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
1806 | { | |
1807 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
1808 | struct list_head *set_list = &sm_info->sit_entry_set; | |
1809 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
1810 | unsigned int segno; |
1811 | ||
7cd8558b | 1812 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
1813 | add_sit_entry(segno, set_list); |
1814 | } | |
1815 | ||
1816 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
1817 | { |
1818 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1819 | struct f2fs_summary_block *sum = curseg->sum_blk; | |
1820 | int i; | |
1821 | ||
184a5cd2 CY |
1822 | for (i = sits_in_cursum(sum) - 1; i >= 0; i--) { |
1823 | unsigned int segno; | |
1824 | bool dirtied; | |
1825 | ||
1826 | segno = le32_to_cpu(segno_in_journal(sum, i)); | |
1827 | dirtied = __mark_sit_entry_dirty(sbi, segno); | |
1828 | ||
1829 | if (!dirtied) | |
1830 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 1831 | } |
184a5cd2 | 1832 | update_sits_in_cursum(sum, -sits_in_cursum(sum)); |
351df4b2 JK |
1833 | } |
1834 | ||
0a8165d7 | 1835 | /* |
351df4b2 JK |
1836 | * CP calls this function, which flushes SIT entries including sit_journal, |
1837 | * and moves prefree segs to free segs. | |
1838 | */ | |
4b2fecc8 | 1839 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
1840 | { |
1841 | struct sit_info *sit_i = SIT_I(sbi); | |
1842 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
1843 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1844 | struct f2fs_summary_block *sum = curseg->sum_blk; | |
184a5cd2 CY |
1845 | struct sit_entry_set *ses, *tmp; |
1846 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 1847 | bool to_journal = true; |
4b2fecc8 | 1848 | struct seg_entry *se; |
351df4b2 JK |
1849 | |
1850 | mutex_lock(&curseg->curseg_mutex); | |
1851 | mutex_lock(&sit_i->sentry_lock); | |
1852 | ||
2b11a74b WL |
1853 | if (!sit_i->dirty_sentries) |
1854 | goto out; | |
1855 | ||
351df4b2 | 1856 | /* |
184a5cd2 CY |
1857 | * add and account sit entries of dirty bitmap in sit entry |
1858 | * set temporarily | |
351df4b2 | 1859 | */ |
184a5cd2 | 1860 | add_sits_in_set(sbi); |
351df4b2 | 1861 | |
184a5cd2 CY |
1862 | /* |
1863 | * if there are no enough space in journal to store dirty sit | |
1864 | * entries, remove all entries from journal and add and account | |
1865 | * them in sit entry set. | |
1866 | */ | |
1867 | if (!__has_cursum_space(sum, sit_i->dirty_sentries, SIT_JOURNAL)) | |
1868 | remove_sits_in_journal(sbi); | |
b2955550 | 1869 | |
184a5cd2 CY |
1870 | /* |
1871 | * there are two steps to flush sit entries: | |
1872 | * #1, flush sit entries to journal in current cold data summary block. | |
1873 | * #2, flush sit entries to sit page. | |
1874 | */ | |
1875 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 1876 | struct page *page = NULL; |
184a5cd2 CY |
1877 | struct f2fs_sit_block *raw_sit = NULL; |
1878 | unsigned int start_segno = ses->start_segno; | |
1879 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 1880 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
1881 | unsigned int segno = start_segno; |
1882 | ||
1883 | if (to_journal && | |
1884 | !__has_cursum_space(sum, ses->entry_cnt, SIT_JOURNAL)) | |
1885 | to_journal = false; | |
1886 | ||
1887 | if (!to_journal) { | |
1888 | page = get_next_sit_page(sbi, start_segno); | |
1889 | raw_sit = page_address(page); | |
351df4b2 | 1890 | } |
351df4b2 | 1891 | |
184a5cd2 CY |
1892 | /* flush dirty sit entries in region of current sit set */ |
1893 | for_each_set_bit_from(segno, bitmap, end) { | |
1894 | int offset, sit_offset; | |
4b2fecc8 JK |
1895 | |
1896 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
1897 | |
1898 | /* add discard candidates */ | |
d7bc2484 | 1899 | if (cpc->reason != CP_DISCARD) { |
4b2fecc8 JK |
1900 | cpc->trim_start = segno; |
1901 | add_discard_addrs(sbi, cpc); | |
1902 | } | |
184a5cd2 CY |
1903 | |
1904 | if (to_journal) { | |
1905 | offset = lookup_journal_in_cursum(sum, | |
1906 | SIT_JOURNAL, segno, 1); | |
1907 | f2fs_bug_on(sbi, offset < 0); | |
1908 | segno_in_journal(sum, offset) = | |
1909 | cpu_to_le32(segno); | |
1910 | seg_info_to_raw_sit(se, | |
1911 | &sit_in_journal(sum, offset)); | |
1912 | } else { | |
1913 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
1914 | seg_info_to_raw_sit(se, | |
1915 | &raw_sit->entries[sit_offset]); | |
1916 | } | |
351df4b2 | 1917 | |
184a5cd2 CY |
1918 | __clear_bit(segno, bitmap); |
1919 | sit_i->dirty_sentries--; | |
1920 | ses->entry_cnt--; | |
351df4b2 JK |
1921 | } |
1922 | ||
184a5cd2 CY |
1923 | if (!to_journal) |
1924 | f2fs_put_page(page, 1); | |
1925 | ||
1926 | f2fs_bug_on(sbi, ses->entry_cnt); | |
1927 | release_sit_entry_set(ses); | |
351df4b2 | 1928 | } |
184a5cd2 CY |
1929 | |
1930 | f2fs_bug_on(sbi, !list_empty(head)); | |
1931 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 1932 | out: |
4b2fecc8 JK |
1933 | if (cpc->reason == CP_DISCARD) { |
1934 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) | |
1935 | add_discard_addrs(sbi, cpc); | |
1936 | } | |
351df4b2 JK |
1937 | mutex_unlock(&sit_i->sentry_lock); |
1938 | mutex_unlock(&curseg->curseg_mutex); | |
1939 | ||
351df4b2 JK |
1940 | set_prefree_as_free_segments(sbi); |
1941 | } | |
1942 | ||
1943 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
1944 | { | |
1945 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
1946 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1947 | struct sit_info *sit_i; | |
1948 | unsigned int sit_segs, start; | |
1949 | char *src_bitmap, *dst_bitmap; | |
1950 | unsigned int bitmap_size; | |
1951 | ||
1952 | /* allocate memory for SIT information */ | |
1953 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); | |
1954 | if (!sit_i) | |
1955 | return -ENOMEM; | |
1956 | ||
1957 | SM_I(sbi)->sit_info = sit_i; | |
1958 | ||
39307a8e JK |
1959 | sit_i->sentries = f2fs_kvzalloc(MAIN_SEGS(sbi) * |
1960 | sizeof(struct seg_entry), GFP_KERNEL); | |
351df4b2 JK |
1961 | if (!sit_i->sentries) |
1962 | return -ENOMEM; | |
1963 | ||
7cd8558b | 1964 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 1965 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
1966 | if (!sit_i->dirty_sentries_bitmap) |
1967 | return -ENOMEM; | |
1968 | ||
7cd8558b | 1969 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
1970 | sit_i->sentries[start].cur_valid_map |
1971 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
1972 | sit_i->sentries[start].ckpt_valid_map | |
1973 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
a66cdd98 JK |
1974 | sit_i->sentries[start].discard_map |
1975 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
1976 | if (!sit_i->sentries[start].cur_valid_map || | |
1977 | !sit_i->sentries[start].ckpt_valid_map || | |
1978 | !sit_i->sentries[start].discard_map) | |
351df4b2 JK |
1979 | return -ENOMEM; |
1980 | } | |
1981 | ||
60a3b782 JK |
1982 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
1983 | if (!sit_i->tmp_map) | |
1984 | return -ENOMEM; | |
1985 | ||
351df4b2 | 1986 | if (sbi->segs_per_sec > 1) { |
39307a8e JK |
1987 | sit_i->sec_entries = f2fs_kvzalloc(MAIN_SECS(sbi) * |
1988 | sizeof(struct sec_entry), GFP_KERNEL); | |
351df4b2 JK |
1989 | if (!sit_i->sec_entries) |
1990 | return -ENOMEM; | |
1991 | } | |
1992 | ||
1993 | /* get information related with SIT */ | |
1994 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
1995 | ||
1996 | /* setup SIT bitmap from ckeckpoint pack */ | |
1997 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
1998 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
1999 | ||
79b5793b | 2000 | dst_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2001 | if (!dst_bitmap) |
2002 | return -ENOMEM; | |
351df4b2 JK |
2003 | |
2004 | /* init SIT information */ | |
2005 | sit_i->s_ops = &default_salloc_ops; | |
2006 | ||
2007 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
2008 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
2009 | sit_i->written_valid_blocks = le64_to_cpu(ckpt->valid_block_count); | |
2010 | sit_i->sit_bitmap = dst_bitmap; | |
2011 | sit_i->bitmap_size = bitmap_size; | |
2012 | sit_i->dirty_sentries = 0; | |
2013 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
2014 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
2015 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; | |
2016 | mutex_init(&sit_i->sentry_lock); | |
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
2021 | { | |
351df4b2 JK |
2022 | struct free_segmap_info *free_i; |
2023 | unsigned int bitmap_size, sec_bitmap_size; | |
2024 | ||
2025 | /* allocate memory for free segmap information */ | |
2026 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); | |
2027 | if (!free_i) | |
2028 | return -ENOMEM; | |
2029 | ||
2030 | SM_I(sbi)->free_info = free_i; | |
2031 | ||
7cd8558b | 2032 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2033 | free_i->free_segmap = f2fs_kvmalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2034 | if (!free_i->free_segmap) |
2035 | return -ENOMEM; | |
2036 | ||
7cd8558b | 2037 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
39307a8e | 2038 | free_i->free_secmap = f2fs_kvmalloc(sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2039 | if (!free_i->free_secmap) |
2040 | return -ENOMEM; | |
2041 | ||
2042 | /* set all segments as dirty temporarily */ | |
2043 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
2044 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
2045 | ||
2046 | /* init free segmap information */ | |
7cd8558b | 2047 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
2048 | free_i->free_segments = 0; |
2049 | free_i->free_sections = 0; | |
1a118ccf | 2050 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
2051 | return 0; |
2052 | } | |
2053 | ||
2054 | static int build_curseg(struct f2fs_sb_info *sbi) | |
2055 | { | |
1042d60f | 2056 | struct curseg_info *array; |
351df4b2 JK |
2057 | int i; |
2058 | ||
b434babf | 2059 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
351df4b2 JK |
2060 | if (!array) |
2061 | return -ENOMEM; | |
2062 | ||
2063 | SM_I(sbi)->curseg_array = array; | |
2064 | ||
2065 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
2066 | mutex_init(&array[i].curseg_mutex); | |
2067 | array[i].sum_blk = kzalloc(PAGE_CACHE_SIZE, GFP_KERNEL); | |
2068 | if (!array[i].sum_blk) | |
2069 | return -ENOMEM; | |
2070 | array[i].segno = NULL_SEGNO; | |
2071 | array[i].next_blkoff = 0; | |
2072 | } | |
2073 | return restore_curseg_summaries(sbi); | |
2074 | } | |
2075 | ||
2076 | static void build_sit_entries(struct f2fs_sb_info *sbi) | |
2077 | { | |
2078 | struct sit_info *sit_i = SIT_I(sbi); | |
2079 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
2080 | struct f2fs_summary_block *sum = curseg->sum_blk; | |
74de593a CY |
2081 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
2082 | unsigned int i, start, end; | |
2083 | unsigned int readed, start_blk = 0; | |
90a893c7 | 2084 | int nrpages = MAX_BIO_BLOCKS(sbi); |
351df4b2 | 2085 | |
74de593a | 2086 | do { |
662befda | 2087 | readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT); |
74de593a CY |
2088 | |
2089 | start = start_blk * sit_i->sents_per_block; | |
2090 | end = (start_blk + readed) * sit_i->sents_per_block; | |
2091 | ||
7cd8558b | 2092 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a CY |
2093 | struct seg_entry *se = &sit_i->sentries[start]; |
2094 | struct f2fs_sit_block *sit_blk; | |
2095 | struct f2fs_sit_entry sit; | |
2096 | struct page *page; | |
2097 | ||
2098 | mutex_lock(&curseg->curseg_mutex); | |
2099 | for (i = 0; i < sits_in_cursum(sum); i++) { | |
6c311ec6 CF |
2100 | if (le32_to_cpu(segno_in_journal(sum, i)) |
2101 | == start) { | |
74de593a CY |
2102 | sit = sit_in_journal(sum, i); |
2103 | mutex_unlock(&curseg->curseg_mutex); | |
2104 | goto got_it; | |
2105 | } | |
351df4b2 | 2106 | } |
74de593a CY |
2107 | mutex_unlock(&curseg->curseg_mutex); |
2108 | ||
2109 | page = get_current_sit_page(sbi, start); | |
2110 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
2111 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
2112 | f2fs_put_page(page, 1); | |
351df4b2 | 2113 | got_it: |
74de593a CY |
2114 | check_block_count(sbi, start, &sit); |
2115 | seg_info_from_raw_sit(se, &sit); | |
a66cdd98 JK |
2116 | |
2117 | /* build discard map only one time */ | |
2118 | memcpy(se->discard_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE); | |
2119 | sbi->discard_blks += sbi->blocks_per_seg - se->valid_blocks; | |
2120 | ||
74de593a CY |
2121 | if (sbi->segs_per_sec > 1) { |
2122 | struct sec_entry *e = get_sec_entry(sbi, start); | |
2123 | e->valid_blocks += se->valid_blocks; | |
2124 | } | |
351df4b2 | 2125 | } |
74de593a CY |
2126 | start_blk += readed; |
2127 | } while (start_blk < sit_blk_cnt); | |
351df4b2 JK |
2128 | } |
2129 | ||
2130 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
2131 | { | |
2132 | unsigned int start; | |
2133 | int type; | |
2134 | ||
7cd8558b | 2135 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2136 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
2137 | if (!sentry->valid_blocks) | |
2138 | __set_free(sbi, start); | |
2139 | } | |
2140 | ||
2141 | /* set use the current segments */ | |
2142 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
2143 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
2144 | __set_test_and_inuse(sbi, curseg_t->segno); | |
2145 | } | |
2146 | } | |
2147 | ||
2148 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
2149 | { | |
2150 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2151 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 2152 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
2153 | unsigned short valid_blocks; |
2154 | ||
8736fbf0 | 2155 | while (1) { |
351df4b2 | 2156 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
2157 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
2158 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
2159 | break; |
2160 | offset = segno + 1; | |
2161 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
ec325b52 | 2162 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 2163 | continue; |
ec325b52 JK |
2164 | if (valid_blocks > sbi->blocks_per_seg) { |
2165 | f2fs_bug_on(sbi, 1); | |
2166 | continue; | |
2167 | } | |
351df4b2 JK |
2168 | mutex_lock(&dirty_i->seglist_lock); |
2169 | __locate_dirty_segment(sbi, segno, DIRTY); | |
2170 | mutex_unlock(&dirty_i->seglist_lock); | |
2171 | } | |
2172 | } | |
2173 | ||
5ec4e49f | 2174 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2175 | { |
2176 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 2177 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 2178 | |
39307a8e | 2179 | dirty_i->victim_secmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
5ec4e49f | 2180 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
2181 | return -ENOMEM; |
2182 | return 0; | |
2183 | } | |
2184 | ||
2185 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
2186 | { | |
2187 | struct dirty_seglist_info *dirty_i; | |
2188 | unsigned int bitmap_size, i; | |
2189 | ||
2190 | /* allocate memory for dirty segments list information */ | |
2191 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); | |
2192 | if (!dirty_i) | |
2193 | return -ENOMEM; | |
2194 | ||
2195 | SM_I(sbi)->dirty_info = dirty_i; | |
2196 | mutex_init(&dirty_i->seglist_lock); | |
2197 | ||
7cd8558b | 2198 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
2199 | |
2200 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
39307a8e | 2201 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2202 | if (!dirty_i->dirty_segmap[i]) |
2203 | return -ENOMEM; | |
2204 | } | |
2205 | ||
2206 | init_dirty_segmap(sbi); | |
5ec4e49f | 2207 | return init_victim_secmap(sbi); |
351df4b2 JK |
2208 | } |
2209 | ||
0a8165d7 | 2210 | /* |
351df4b2 JK |
2211 | * Update min, max modified time for cost-benefit GC algorithm |
2212 | */ | |
2213 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
2214 | { | |
2215 | struct sit_info *sit_i = SIT_I(sbi); | |
2216 | unsigned int segno; | |
2217 | ||
2218 | mutex_lock(&sit_i->sentry_lock); | |
2219 | ||
2220 | sit_i->min_mtime = LLONG_MAX; | |
2221 | ||
7cd8558b | 2222 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
2223 | unsigned int i; |
2224 | unsigned long long mtime = 0; | |
2225 | ||
2226 | for (i = 0; i < sbi->segs_per_sec; i++) | |
2227 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
2228 | ||
2229 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
2230 | ||
2231 | if (sit_i->min_mtime > mtime) | |
2232 | sit_i->min_mtime = mtime; | |
2233 | } | |
2234 | sit_i->max_mtime = get_mtime(sbi); | |
2235 | mutex_unlock(&sit_i->sentry_lock); | |
2236 | } | |
2237 | ||
2238 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
2239 | { | |
2240 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2241 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 2242 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
2243 | int err; |
2244 | ||
2245 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); | |
2246 | if (!sm_info) | |
2247 | return -ENOMEM; | |
2248 | ||
2249 | /* init sm info */ | |
2250 | sbi->sm_info = sm_info; | |
351df4b2 JK |
2251 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
2252 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
2253 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
2254 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
2255 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
2256 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
2257 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
2258 | sm_info->rec_prefree_segments = sm_info->main_segments * |
2259 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
9b5f136f | 2260 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; |
216fbd64 | 2261 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 2262 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
351df4b2 | 2263 | |
7fd9e544 JK |
2264 | INIT_LIST_HEAD(&sm_info->discard_list); |
2265 | sm_info->nr_discards = 0; | |
2266 | sm_info->max_discards = 0; | |
2267 | ||
bba681cb JK |
2268 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
2269 | ||
184a5cd2 CY |
2270 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
2271 | ||
b270ad6f | 2272 | if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
2273 | err = create_flush_cmd_control(sbi); |
2274 | if (err) | |
a688b9d9 | 2275 | return err; |
6b4afdd7 JK |
2276 | } |
2277 | ||
351df4b2 JK |
2278 | err = build_sit_info(sbi); |
2279 | if (err) | |
2280 | return err; | |
2281 | err = build_free_segmap(sbi); | |
2282 | if (err) | |
2283 | return err; | |
2284 | err = build_curseg(sbi); | |
2285 | if (err) | |
2286 | return err; | |
2287 | ||
2288 | /* reinit free segmap based on SIT */ | |
2289 | build_sit_entries(sbi); | |
2290 | ||
2291 | init_free_segmap(sbi); | |
2292 | err = build_dirty_segmap(sbi); | |
2293 | if (err) | |
2294 | return err; | |
2295 | ||
2296 | init_min_max_mtime(sbi); | |
2297 | return 0; | |
2298 | } | |
2299 | ||
2300 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
2301 | enum dirty_type dirty_type) | |
2302 | { | |
2303 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2304 | ||
2305 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 2306 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
2307 | dirty_i->nr_dirty[dirty_type] = 0; |
2308 | mutex_unlock(&dirty_i->seglist_lock); | |
2309 | } | |
2310 | ||
5ec4e49f | 2311 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2312 | { |
2313 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 2314 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
2315 | } |
2316 | ||
2317 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
2318 | { | |
2319 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2320 | int i; | |
2321 | ||
2322 | if (!dirty_i) | |
2323 | return; | |
2324 | ||
2325 | /* discard pre-free/dirty segments list */ | |
2326 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
2327 | discard_dirty_segmap(sbi, i); | |
2328 | ||
5ec4e49f | 2329 | destroy_victim_secmap(sbi); |
351df4b2 JK |
2330 | SM_I(sbi)->dirty_info = NULL; |
2331 | kfree(dirty_i); | |
2332 | } | |
2333 | ||
2334 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
2335 | { | |
2336 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
2337 | int i; | |
2338 | ||
2339 | if (!array) | |
2340 | return; | |
2341 | SM_I(sbi)->curseg_array = NULL; | |
2342 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2343 | kfree(array[i].sum_blk); | |
2344 | kfree(array); | |
2345 | } | |
2346 | ||
2347 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
2348 | { | |
2349 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
2350 | if (!free_i) | |
2351 | return; | |
2352 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
2353 | kvfree(free_i->free_segmap); |
2354 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
2355 | kfree(free_i); |
2356 | } | |
2357 | ||
2358 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
2359 | { | |
2360 | struct sit_info *sit_i = SIT_I(sbi); | |
2361 | unsigned int start; | |
2362 | ||
2363 | if (!sit_i) | |
2364 | return; | |
2365 | ||
2366 | if (sit_i->sentries) { | |
7cd8558b | 2367 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2368 | kfree(sit_i->sentries[start].cur_valid_map); |
2369 | kfree(sit_i->sentries[start].ckpt_valid_map); | |
a66cdd98 | 2370 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
2371 | } |
2372 | } | |
60a3b782 JK |
2373 | kfree(sit_i->tmp_map); |
2374 | ||
39307a8e JK |
2375 | kvfree(sit_i->sentries); |
2376 | kvfree(sit_i->sec_entries); | |
2377 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
2378 | |
2379 | SM_I(sbi)->sit_info = NULL; | |
2380 | kfree(sit_i->sit_bitmap); | |
2381 | kfree(sit_i); | |
2382 | } | |
2383 | ||
2384 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
2385 | { | |
2386 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 2387 | |
3b03f724 CY |
2388 | if (!sm_info) |
2389 | return; | |
2163d198 | 2390 | destroy_flush_cmd_control(sbi); |
351df4b2 JK |
2391 | destroy_dirty_segmap(sbi); |
2392 | destroy_curseg(sbi); | |
2393 | destroy_free_segmap(sbi); | |
2394 | destroy_sit_info(sbi); | |
2395 | sbi->sm_info = NULL; | |
2396 | kfree(sm_info); | |
2397 | } | |
7fd9e544 JK |
2398 | |
2399 | int __init create_segment_manager_caches(void) | |
2400 | { | |
2401 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 2402 | sizeof(struct discard_entry)); |
7fd9e544 | 2403 | if (!discard_entry_slab) |
184a5cd2 CY |
2404 | goto fail; |
2405 | ||
2406 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", | |
c9ee0085 | 2407 | sizeof(struct sit_entry_set)); |
184a5cd2 CY |
2408 | if (!sit_entry_set_slab) |
2409 | goto destory_discard_entry; | |
88b88a66 JK |
2410 | |
2411 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
2412 | sizeof(struct inmem_pages)); | |
2413 | if (!inmem_entry_slab) | |
2414 | goto destroy_sit_entry_set; | |
7fd9e544 | 2415 | return 0; |
184a5cd2 | 2416 | |
88b88a66 JK |
2417 | destroy_sit_entry_set: |
2418 | kmem_cache_destroy(sit_entry_set_slab); | |
184a5cd2 CY |
2419 | destory_discard_entry: |
2420 | kmem_cache_destroy(discard_entry_slab); | |
2421 | fail: | |
2422 | return -ENOMEM; | |
7fd9e544 JK |
2423 | } |
2424 | ||
2425 | void destroy_segment_manager_caches(void) | |
2426 | { | |
184a5cd2 | 2427 | kmem_cache_destroy(sit_entry_set_slab); |
7fd9e544 | 2428 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 2429 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 2430 | } |