Commit | Line | Data |
---|---|---|
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 | |
f96999c3 JK |
32 | static unsigned long __reverse_ulong(unsigned char *str) |
33 | { | |
34 | unsigned long tmp = 0; | |
35 | int shift = 24, idx = 0; | |
36 | ||
37 | #if BITS_PER_LONG == 64 | |
38 | shift = 56; | |
39 | #endif | |
40 | while (shift >= 0) { | |
41 | tmp |= (unsigned long)str[idx++] << shift; | |
42 | shift -= BITS_PER_BYTE; | |
43 | } | |
44 | return tmp; | |
45 | } | |
46 | ||
9a7f143a CL |
47 | /* |
48 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
49 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
50 | */ | |
51 | static inline unsigned long __reverse_ffs(unsigned long word) | |
52 | { | |
53 | int num = 0; | |
54 | ||
55 | #if BITS_PER_LONG == 64 | |
f96999c3 | 56 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 57 | num += 32; |
f96999c3 | 58 | else |
9a7f143a | 59 | word >>= 32; |
9a7f143a | 60 | #endif |
f96999c3 | 61 | if ((word & 0xffff0000) == 0) |
9a7f143a | 62 | num += 16; |
f96999c3 | 63 | else |
9a7f143a | 64 | word >>= 16; |
f96999c3 JK |
65 | |
66 | if ((word & 0xff00) == 0) | |
9a7f143a | 67 | num += 8; |
f96999c3 | 68 | else |
9a7f143a | 69 | word >>= 8; |
f96999c3 | 70 | |
9a7f143a CL |
71 | if ((word & 0xf0) == 0) |
72 | num += 4; | |
73 | else | |
74 | word >>= 4; | |
f96999c3 | 75 | |
9a7f143a CL |
76 | if ((word & 0xc) == 0) |
77 | num += 2; | |
78 | else | |
79 | word >>= 2; | |
f96999c3 | 80 | |
9a7f143a CL |
81 | if ((word & 0x2) == 0) |
82 | num += 1; | |
83 | return num; | |
84 | } | |
85 | ||
86 | /* | |
e1c42045 | 87 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 88 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 89 | * @size must be integral times of unsigned long. |
9a7f143a | 90 | * Example: |
f96999c3 JK |
91 | * MSB <--> LSB |
92 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
93 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
94 | */ |
95 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
96 | unsigned long size, unsigned long offset) | |
97 | { | |
98 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 99 | unsigned long result = size; |
9a7f143a | 100 | unsigned long tmp; |
9a7f143a CL |
101 | |
102 | if (offset >= size) | |
103 | return size; | |
104 | ||
692223d1 | 105 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 106 | offset %= BITS_PER_LONG; |
f96999c3 | 107 | |
692223d1 FL |
108 | while (1) { |
109 | if (*p == 0) | |
110 | goto pass; | |
9a7f143a | 111 | |
f96999c3 | 112 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
113 | |
114 | tmp &= ~0UL >> offset; | |
115 | if (size < BITS_PER_LONG) | |
116 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 117 | if (tmp) |
692223d1 FL |
118 | goto found; |
119 | pass: | |
120 | if (size <= BITS_PER_LONG) | |
121 | break; | |
9a7f143a | 122 | size -= BITS_PER_LONG; |
692223d1 | 123 | offset = 0; |
f96999c3 | 124 | p++; |
9a7f143a | 125 | } |
692223d1 FL |
126 | return result; |
127 | found: | |
128 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
129 | } |
130 | ||
131 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
132 | unsigned long size, unsigned long offset) | |
133 | { | |
134 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 135 | unsigned long result = size; |
9a7f143a | 136 | unsigned long tmp; |
9a7f143a CL |
137 | |
138 | if (offset >= size) | |
139 | return size; | |
140 | ||
80609448 | 141 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 142 | offset %= BITS_PER_LONG; |
80609448 JK |
143 | |
144 | while (1) { | |
145 | if (*p == ~0UL) | |
146 | goto pass; | |
147 | ||
f96999c3 | 148 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
149 | |
150 | if (offset) | |
151 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
152 | if (size < BITS_PER_LONG) | |
153 | tmp |= ~0UL >> size; | |
f96999c3 | 154 | if (tmp != ~0UL) |
80609448 JK |
155 | goto found; |
156 | pass: | |
157 | if (size <= BITS_PER_LONG) | |
158 | break; | |
9a7f143a | 159 | size -= BITS_PER_LONG; |
80609448 | 160 | offset = 0; |
f96999c3 | 161 | p++; |
9a7f143a | 162 | } |
80609448 JK |
163 | return result; |
164 | found: | |
165 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
166 | } |
167 | ||
88b88a66 JK |
168 | void register_inmem_page(struct inode *inode, struct page *page) |
169 | { | |
170 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
171 | struct inmem_pages *new; | |
9be32d72 | 172 | |
9e4ded3f | 173 | f2fs_trace_pid(page); |
0722b101 | 174 | |
decd36b6 CY |
175 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
176 | SetPagePrivate(page); | |
177 | ||
88b88a66 JK |
178 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
179 | ||
180 | /* add atomic page indices to the list */ | |
181 | new->page = page; | |
182 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 183 | |
88b88a66 JK |
184 | /* increase reference count with clean state */ |
185 | mutex_lock(&fi->inmem_lock); | |
186 | get_page(page); | |
187 | list_add_tail(&new->list, &fi->inmem_pages); | |
8dcf2ff7 | 188 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 189 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
190 | |
191 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
192 | } |
193 | ||
28bc106b CY |
194 | static int __revoke_inmem_pages(struct inode *inode, |
195 | struct list_head *head, bool drop, bool recover) | |
29b96b54 | 196 | { |
28bc106b | 197 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 198 | struct inmem_pages *cur, *tmp; |
28bc106b | 199 | int err = 0; |
29b96b54 CY |
200 | |
201 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
202 | struct page *page = cur->page; |
203 | ||
204 | if (drop) | |
205 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
206 | ||
207 | lock_page(page); | |
29b96b54 | 208 | |
28bc106b CY |
209 | if (recover) { |
210 | struct dnode_of_data dn; | |
211 | struct node_info ni; | |
212 | ||
213 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
214 | ||
215 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
216 | if (get_dnode_of_data(&dn, page->index, LOOKUP_NODE)) { | |
217 | err = -EAGAIN; | |
218 | goto next; | |
219 | } | |
220 | get_node_info(sbi, dn.nid, &ni); | |
221 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
222 | cur->old_addr, ni.version, true, true); | |
223 | f2fs_put_dnode(&dn); | |
224 | } | |
225 | next: | |
226 | ClearPageUptodate(page); | |
227 | set_page_private(page, 0); | |
228 | ClearPageUptodate(page); | |
229 | f2fs_put_page(page, 1); | |
29b96b54 CY |
230 | |
231 | list_del(&cur->list); | |
232 | kmem_cache_free(inmem_entry_slab, cur); | |
233 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
234 | } | |
28bc106b | 235 | return err; |
29b96b54 CY |
236 | } |
237 | ||
238 | void drop_inmem_pages(struct inode *inode) | |
239 | { | |
240 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
241 | ||
242 | mutex_lock(&fi->inmem_lock); | |
28bc106b | 243 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
29b96b54 CY |
244 | mutex_unlock(&fi->inmem_lock); |
245 | } | |
246 | ||
28bc106b CY |
247 | static int __commit_inmem_pages(struct inode *inode, |
248 | struct list_head *revoke_list) | |
88b88a66 JK |
249 | { |
250 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
251 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
252 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 253 | struct f2fs_io_info fio = { |
05ca3632 | 254 | .sbi = sbi, |
88b88a66 | 255 | .type = DATA, |
1e84371f | 256 | .rw = WRITE_SYNC | REQ_PRIO, |
4375a336 | 257 | .encrypted_page = NULL, |
88b88a66 | 258 | }; |
29b96b54 | 259 | bool submit_bio = false; |
edb27dee | 260 | int err = 0; |
88b88a66 | 261 | |
88b88a66 | 262 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
263 | struct page *page = cur->page; |
264 | ||
265 | lock_page(page); | |
266 | if (page->mapping == inode->i_mapping) { | |
267 | trace_f2fs_commit_inmem_page(page, INMEM); | |
268 | ||
269 | set_page_dirty(page); | |
270 | f2fs_wait_on_page_writeback(page, DATA, true); | |
271 | if (clear_page_dirty_for_io(page)) | |
29b96b54 | 272 | inode_dec_dirty_pages(inode); |
28bc106b CY |
273 | |
274 | fio.page = page; | |
29b96b54 CY |
275 | err = do_write_data_page(&fio); |
276 | if (err) { | |
28bc106b | 277 | unlock_page(page); |
29b96b54 | 278 | break; |
70c640b1 | 279 | } |
29b96b54 | 280 | |
28bc106b CY |
281 | /* record old blkaddr for revoking */ |
282 | cur->old_addr = fio.old_blkaddr; | |
decd36b6 | 283 | |
28bc106b CY |
284 | clear_cold_data(page); |
285 | submit_bio = true; | |
286 | } | |
287 | unlock_page(page); | |
288 | list_move_tail(&cur->list, revoke_list); | |
88b88a66 | 289 | } |
29b96b54 CY |
290 | |
291 | if (submit_bio) | |
292 | f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, DATA, WRITE); | |
28bc106b CY |
293 | |
294 | if (!err) | |
295 | __revoke_inmem_pages(inode, revoke_list, false, false); | |
296 | ||
29b96b54 CY |
297 | return err; |
298 | } | |
299 | ||
300 | int commit_inmem_pages(struct inode *inode) | |
301 | { | |
302 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
303 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b CY |
304 | struct list_head revoke_list; |
305 | int err; | |
29b96b54 | 306 | |
28bc106b | 307 | INIT_LIST_HEAD(&revoke_list); |
29b96b54 CY |
308 | f2fs_balance_fs(sbi, true); |
309 | f2fs_lock_op(sbi); | |
310 | ||
311 | mutex_lock(&fi->inmem_lock); | |
28bc106b CY |
312 | err = __commit_inmem_pages(inode, &revoke_list); |
313 | if (err) { | |
314 | int ret; | |
315 | /* | |
316 | * try to revoke all committed pages, but still we could fail | |
317 | * due to no memory or other reason, if that happened, EAGAIN | |
318 | * will be returned, which means in such case, transaction is | |
319 | * already not integrity, caller should use journal to do the | |
320 | * recovery or rewrite & commit last transaction. For other | |
321 | * error number, revoking was done by filesystem itself. | |
322 | */ | |
323 | ret = __revoke_inmem_pages(inode, &revoke_list, false, true); | |
324 | if (ret) | |
325 | err = ret; | |
326 | ||
327 | /* drop all uncommitted pages */ | |
328 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
329 | } | |
88b88a66 JK |
330 | mutex_unlock(&fi->inmem_lock); |
331 | ||
29b96b54 | 332 | f2fs_unlock_op(sbi); |
edb27dee | 333 | return err; |
88b88a66 JK |
334 | } |
335 | ||
0a8165d7 | 336 | /* |
351df4b2 JK |
337 | * This function balances dirty node and dentry pages. |
338 | * In addition, it controls garbage collection. | |
339 | */ | |
2c4db1a6 | 340 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 341 | { |
2c4db1a6 JK |
342 | if (!need) |
343 | return; | |
351df4b2 | 344 | /* |
029cd28c JK |
345 | * We should do GC or end up with checkpoint, if there are so many dirty |
346 | * dir/node pages without enough free segments. | |
351df4b2 | 347 | */ |
43727527 | 348 | if (has_not_enough_free_secs(sbi, 0)) { |
351df4b2 | 349 | mutex_lock(&sbi->gc_mutex); |
d530d4d8 | 350 | f2fs_gc(sbi, false); |
351df4b2 JK |
351 | } |
352 | } | |
353 | ||
4660f9c0 JK |
354 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
355 | { | |
1dcc336b | 356 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
357 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
358 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 359 | |
1b38dc8e JK |
360 | /* check the # of cached NAT entries */ |
361 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
362 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
363 | ||
31696580 CY |
364 | if (!available_free_memory(sbi, FREE_NIDS)) |
365 | try_to_free_nids(sbi, NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES); | |
366 | ||
1b38dc8e JK |
367 | /* checkpoint is the only way to shrink partial cached entries */ |
368 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
60b99b48 | 369 | !available_free_memory(sbi, INO_ENTRIES) || |
7d768d2c CY |
370 | excess_prefree_segs(sbi) || |
371 | excess_dirty_nats(sbi) || | |
d0239e1b | 372 | (is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) { |
e9f5b8b8 CY |
373 | if (test_opt(sbi, DATA_FLUSH)) { |
374 | struct blk_plug plug; | |
375 | ||
376 | blk_start_plug(&plug); | |
36b35a0d | 377 | sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 CY |
378 | blk_finish_plug(&plug); |
379 | } | |
4660f9c0 | 380 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 381 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 382 | } |
4660f9c0 JK |
383 | } |
384 | ||
2163d198 | 385 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
386 | { |
387 | struct f2fs_sb_info *sbi = data; | |
a688b9d9 GZ |
388 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
389 | wait_queue_head_t *q = &fcc->flush_wait_queue; | |
6b4afdd7 JK |
390 | repeat: |
391 | if (kthread_should_stop()) | |
392 | return 0; | |
393 | ||
721bd4d5 | 394 | if (!llist_empty(&fcc->issue_list)) { |
740432f8 | 395 | struct bio *bio; |
6b4afdd7 JK |
396 | struct flush_cmd *cmd, *next; |
397 | int ret; | |
398 | ||
740432f8 JK |
399 | bio = f2fs_bio_alloc(0); |
400 | ||
721bd4d5 GZ |
401 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
402 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
403 | ||
6b4afdd7 JK |
404 | bio->bi_bdev = sbi->sb->s_bdev; |
405 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
406 | ||
721bd4d5 GZ |
407 | llist_for_each_entry_safe(cmd, next, |
408 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 409 | cmd->ret = ret; |
6b4afdd7 JK |
410 | complete(&cmd->wait); |
411 | } | |
a4ed23f2 | 412 | bio_put(bio); |
a688b9d9 | 413 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
414 | } |
415 | ||
a688b9d9 | 416 | wait_event_interruptible(*q, |
721bd4d5 | 417 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
418 | goto repeat; |
419 | } | |
420 | ||
421 | int f2fs_issue_flush(struct f2fs_sb_info *sbi) | |
422 | { | |
a688b9d9 | 423 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
adf8d90b | 424 | struct flush_cmd cmd; |
6b4afdd7 | 425 | |
24a9ee0f JK |
426 | trace_f2fs_issue_flush(sbi->sb, test_opt(sbi, NOBARRIER), |
427 | test_opt(sbi, FLUSH_MERGE)); | |
428 | ||
0f7b2abd JK |
429 | if (test_opt(sbi, NOBARRIER)) |
430 | return 0; | |
431 | ||
740432f8 JK |
432 | if (!test_opt(sbi, FLUSH_MERGE)) { |
433 | struct bio *bio = f2fs_bio_alloc(0); | |
434 | int ret; | |
435 | ||
436 | bio->bi_bdev = sbi->sb->s_bdev; | |
437 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
438 | bio_put(bio); | |
439 | return ret; | |
440 | } | |
6b4afdd7 | 441 | |
adf8d90b | 442 | init_completion(&cmd.wait); |
6b4afdd7 | 443 | |
721bd4d5 | 444 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 445 | |
a688b9d9 GZ |
446 | if (!fcc->dispatch_list) |
447 | wake_up(&fcc->flush_wait_queue); | |
6b4afdd7 | 448 | |
adf8d90b CY |
449 | wait_for_completion(&cmd.wait); |
450 | ||
451 | return cmd.ret; | |
6b4afdd7 JK |
452 | } |
453 | ||
2163d198 GZ |
454 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
455 | { | |
456 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
457 | struct flush_cmd_control *fcc; | |
458 | int err = 0; | |
459 | ||
460 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); | |
461 | if (!fcc) | |
462 | return -ENOMEM; | |
2163d198 | 463 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 464 | init_llist_head(&fcc->issue_list); |
6b2920a5 | 465 | SM_I(sbi)->cmd_control_info = fcc; |
2163d198 GZ |
466 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
467 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
468 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
469 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
470 | kfree(fcc); | |
6b2920a5 | 471 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
472 | return err; |
473 | } | |
2163d198 GZ |
474 | |
475 | return err; | |
476 | } | |
477 | ||
478 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi) | |
479 | { | |
6b2920a5 | 480 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
2163d198 GZ |
481 | |
482 | if (fcc && fcc->f2fs_issue_flush) | |
483 | kthread_stop(fcc->f2fs_issue_flush); | |
484 | kfree(fcc); | |
6b2920a5 | 485 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
486 | } |
487 | ||
351df4b2 JK |
488 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
489 | enum dirty_type dirty_type) | |
490 | { | |
491 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
492 | ||
493 | /* need not be added */ | |
494 | if (IS_CURSEG(sbi, segno)) | |
495 | return; | |
496 | ||
497 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
498 | dirty_i->nr_dirty[dirty_type]++; | |
499 | ||
500 | if (dirty_type == DIRTY) { | |
501 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 502 | enum dirty_type t = sentry->type; |
b2f2c390 | 503 | |
ec325b52 JK |
504 | if (unlikely(t >= DIRTY)) { |
505 | f2fs_bug_on(sbi, 1); | |
506 | return; | |
507 | } | |
4625d6aa CL |
508 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
509 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
510 | } |
511 | } | |
512 | ||
513 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
514 | enum dirty_type dirty_type) | |
515 | { | |
516 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
517 | ||
518 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
519 | dirty_i->nr_dirty[dirty_type]--; | |
520 | ||
521 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
522 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
523 | enum dirty_type t = sentry->type; | |
524 | ||
525 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
526 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 527 | |
5ec4e49f JK |
528 | if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) |
529 | clear_bit(GET_SECNO(sbi, segno), | |
530 | dirty_i->victim_secmap); | |
351df4b2 JK |
531 | } |
532 | } | |
533 | ||
0a8165d7 | 534 | /* |
351df4b2 JK |
535 | * Should not occur error such as -ENOMEM. |
536 | * Adding dirty entry into seglist is not critical operation. | |
537 | * If a given segment is one of current working segments, it won't be added. | |
538 | */ | |
8d8451af | 539 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
540 | { |
541 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
542 | unsigned short valid_blocks; | |
543 | ||
544 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
545 | return; | |
546 | ||
547 | mutex_lock(&dirty_i->seglist_lock); | |
548 | ||
549 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
550 | ||
551 | if (valid_blocks == 0) { | |
552 | __locate_dirty_segment(sbi, segno, PRE); | |
553 | __remove_dirty_segment(sbi, segno, DIRTY); | |
554 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
555 | __locate_dirty_segment(sbi, segno, DIRTY); | |
556 | } else { | |
557 | /* Recovery routine with SSR needs this */ | |
558 | __remove_dirty_segment(sbi, segno, DIRTY); | |
559 | } | |
560 | ||
561 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
562 | } |
563 | ||
1e87a78d | 564 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
565 | block_t blkstart, block_t blklen) |
566 | { | |
55cf9cb6 CY |
567 | sector_t start = SECTOR_FROM_BLOCK(blkstart); |
568 | sector_t len = SECTOR_FROM_BLOCK(blklen); | |
a66cdd98 JK |
569 | struct seg_entry *se; |
570 | unsigned int offset; | |
571 | block_t i; | |
572 | ||
573 | for (i = blkstart; i < blkstart + blklen; i++) { | |
574 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); | |
575 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
576 | ||
577 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
578 | sbi->discard_blks--; | |
579 | } | |
1661d07c | 580 | trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); |
1e87a78d JK |
581 | return blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0); |
582 | } | |
583 | ||
e90c2d28 | 584 | bool discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr) |
1e87a78d | 585 | { |
60b286c4 | 586 | int err = -EOPNOTSUPP; |
40a02be1 JK |
587 | |
588 | if (test_opt(sbi, DISCARD)) { | |
589 | struct seg_entry *se = get_seg_entry(sbi, | |
590 | GET_SEGNO(sbi, blkaddr)); | |
591 | unsigned int offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
592 | ||
593 | if (f2fs_test_bit(offset, se->discard_map)) | |
e90c2d28 | 594 | return false; |
40a02be1 JK |
595 | |
596 | err = f2fs_issue_discard(sbi, blkaddr, 1); | |
597 | } | |
598 | ||
e90c2d28 | 599 | if (err) { |
381722d2 | 600 | update_meta_page(sbi, NULL, blkaddr); |
e90c2d28 CY |
601 | return true; |
602 | } | |
603 | return false; | |
37208879 JK |
604 | } |
605 | ||
adf4983b | 606 | static void __add_discard_entry(struct f2fs_sb_info *sbi, |
a66cdd98 JK |
607 | struct cp_control *cpc, struct seg_entry *se, |
608 | unsigned int start, unsigned int end) | |
b2955550 JK |
609 | { |
610 | struct list_head *head = &SM_I(sbi)->discard_list; | |
adf4983b JK |
611 | struct discard_entry *new, *last; |
612 | ||
613 | if (!list_empty(head)) { | |
614 | last = list_last_entry(head, struct discard_entry, list); | |
615 | if (START_BLOCK(sbi, cpc->trim_start) + start == | |
616 | last->blkaddr + last->len) { | |
617 | last->len += end - start; | |
618 | goto done; | |
619 | } | |
620 | } | |
621 | ||
622 | new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); | |
623 | INIT_LIST_HEAD(&new->list); | |
624 | new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; | |
625 | new->len = end - start; | |
626 | list_add_tail(&new->list, head); | |
627 | done: | |
628 | SM_I(sbi)->nr_discards += end - start; | |
adf4983b JK |
629 | } |
630 | ||
631 | static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) | |
632 | { | |
b2955550 JK |
633 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
634 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 635 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
636 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
637 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 638 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 639 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 640 | unsigned int start = 0, end = -1; |
4b2fecc8 | 641 | bool force = (cpc->reason == CP_DISCARD); |
b2955550 JK |
642 | int i; |
643 | ||
a66cdd98 | 644 | if (se->valid_blocks == max_blocks) |
b2955550 JK |
645 | return; |
646 | ||
a66cdd98 JK |
647 | if (!force) { |
648 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
912a83b5 DC |
649 | SM_I(sbi)->nr_discards >= SM_I(sbi)->max_discards) |
650 | return; | |
4b2fecc8 JK |
651 | } |
652 | ||
b2955550 JK |
653 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
654 | for (i = 0; i < entries; i++) | |
a66cdd98 | 655 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 656 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 657 | |
4b2fecc8 | 658 | while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { |
b2955550 JK |
659 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
660 | if (start >= max_blocks) | |
661 | break; | |
662 | ||
663 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
a66cdd98 | 664 | __add_discard_entry(sbi, cpc, se, start, end); |
b2955550 JK |
665 | } |
666 | } | |
667 | ||
4b2fecc8 JK |
668 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
669 | { | |
670 | struct list_head *head = &(SM_I(sbi)->discard_list); | |
671 | struct discard_entry *entry, *this; | |
672 | ||
673 | /* drop caches */ | |
674 | list_for_each_entry_safe(entry, this, head, list) { | |
675 | list_del(&entry->list); | |
676 | kmem_cache_free(discard_entry_slab, entry); | |
677 | } | |
678 | } | |
679 | ||
0a8165d7 | 680 | /* |
351df4b2 JK |
681 | * Should call clear_prefree_segments after checkpoint is done. |
682 | */ | |
683 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
684 | { | |
685 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 686 | unsigned int segno; |
351df4b2 JK |
687 | |
688 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 689 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 690 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
691 | mutex_unlock(&dirty_i->seglist_lock); |
692 | } | |
693 | ||
836b5a63 | 694 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 695 | { |
b2955550 | 696 | struct list_head *head = &(SM_I(sbi)->discard_list); |
2d7b822a | 697 | struct discard_entry *entry, *this; |
351df4b2 | 698 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 699 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 700 | unsigned int start = 0, end = -1; |
351df4b2 JK |
701 | |
702 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 703 | |
351df4b2 | 704 | while (1) { |
29e59c14 | 705 | int i; |
7cd8558b JK |
706 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
707 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 708 | break; |
7cd8558b JK |
709 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
710 | start + 1); | |
29e59c14 CL |
711 | |
712 | for (i = start; i < end; i++) | |
713 | clear_bit(i, prefree_map); | |
714 | ||
715 | dirty_i->nr_dirty[PRE] -= end - start; | |
716 | ||
717 | if (!test_opt(sbi, DISCARD)) | |
718 | continue; | |
351df4b2 | 719 | |
37208879 JK |
720 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
721 | (end - start) << sbi->log_blocks_per_seg); | |
351df4b2 JK |
722 | } |
723 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
724 | |
725 | /* send small discards */ | |
2d7b822a | 726 | list_for_each_entry_safe(entry, this, head, list) { |
836b5a63 JK |
727 | if (cpc->reason == CP_DISCARD && entry->len < cpc->trim_minlen) |
728 | goto skip; | |
37208879 | 729 | f2fs_issue_discard(sbi, entry->blkaddr, entry->len); |
f56aa1c5 | 730 | cpc->trimmed += entry->len; |
836b5a63 | 731 | skip: |
b2955550 JK |
732 | list_del(&entry->list); |
733 | SM_I(sbi)->nr_discards -= entry->len; | |
734 | kmem_cache_free(discard_entry_slab, entry); | |
735 | } | |
351df4b2 JK |
736 | } |
737 | ||
184a5cd2 | 738 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
739 | { |
740 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
741 | |
742 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 743 | sit_i->dirty_sentries++; |
184a5cd2 CY |
744 | return false; |
745 | } | |
746 | ||
747 | return true; | |
351df4b2 JK |
748 | } |
749 | ||
750 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
751 | unsigned int segno, int modified) | |
752 | { | |
753 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
754 | se->type = type; | |
755 | if (modified) | |
756 | __mark_sit_entry_dirty(sbi, segno); | |
757 | } | |
758 | ||
759 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
760 | { | |
761 | struct seg_entry *se; | |
762 | unsigned int segno, offset; | |
763 | long int new_vblocks; | |
764 | ||
765 | segno = GET_SEGNO(sbi, blkaddr); | |
766 | ||
767 | se = get_seg_entry(sbi, segno); | |
768 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 769 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 770 | |
9850cf4a | 771 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
772 | (new_vblocks > sbi->blocks_per_seg))); |
773 | ||
774 | se->valid_blocks = new_vblocks; | |
775 | se->mtime = get_mtime(sbi); | |
776 | SIT_I(sbi)->max_mtime = se->mtime; | |
777 | ||
778 | /* Update valid block bitmap */ | |
779 | if (del > 0) { | |
52aca074 | 780 | if (f2fs_test_and_set_bit(offset, se->cur_valid_map)) |
05796763 | 781 | f2fs_bug_on(sbi, 1); |
a66cdd98 JK |
782 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
783 | sbi->discard_blks--; | |
351df4b2 | 784 | } else { |
52aca074 | 785 | if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) |
05796763 | 786 | f2fs_bug_on(sbi, 1); |
a66cdd98 JK |
787 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
788 | sbi->discard_blks++; | |
351df4b2 JK |
789 | } |
790 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
791 | se->ckpt_valid_blocks += del; | |
792 | ||
793 | __mark_sit_entry_dirty(sbi, segno); | |
794 | ||
795 | /* update total number of valid blocks to be written in ckpt area */ | |
796 | SIT_I(sbi)->written_valid_blocks += del; | |
797 | ||
798 | if (sbi->segs_per_sec > 1) | |
799 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
800 | } | |
801 | ||
5e443818 | 802 | void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) |
351df4b2 | 803 | { |
5e443818 JK |
804 | update_sit_entry(sbi, new, 1); |
805 | if (GET_SEGNO(sbi, old) != NULL_SEGNO) | |
806 | update_sit_entry(sbi, old, -1); | |
807 | ||
808 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); | |
809 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); | |
351df4b2 JK |
810 | } |
811 | ||
812 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) | |
813 | { | |
814 | unsigned int segno = GET_SEGNO(sbi, addr); | |
815 | struct sit_info *sit_i = SIT_I(sbi); | |
816 | ||
9850cf4a | 817 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
818 | if (addr == NEW_ADDR) |
819 | return; | |
820 | ||
821 | /* add it into sit main buffer */ | |
822 | mutex_lock(&sit_i->sentry_lock); | |
823 | ||
824 | update_sit_entry(sbi, addr, -1); | |
825 | ||
826 | /* add it into dirty seglist */ | |
827 | locate_dirty_segment(sbi, segno); | |
828 | ||
829 | mutex_unlock(&sit_i->sentry_lock); | |
830 | } | |
831 | ||
6e2c64ad JK |
832 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
833 | { | |
834 | struct sit_info *sit_i = SIT_I(sbi); | |
835 | unsigned int segno, offset; | |
836 | struct seg_entry *se; | |
837 | bool is_cp = false; | |
838 | ||
839 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) | |
840 | return true; | |
841 | ||
842 | mutex_lock(&sit_i->sentry_lock); | |
843 | ||
844 | segno = GET_SEGNO(sbi, blkaddr); | |
845 | se = get_seg_entry(sbi, segno); | |
846 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
847 | ||
848 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
849 | is_cp = true; | |
850 | ||
851 | mutex_unlock(&sit_i->sentry_lock); | |
852 | ||
853 | return is_cp; | |
854 | } | |
855 | ||
0a8165d7 | 856 | /* |
351df4b2 JK |
857 | * This function should be resided under the curseg_mutex lock |
858 | */ | |
859 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 860 | struct f2fs_summary *sum) |
351df4b2 JK |
861 | { |
862 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
863 | void *addr = curseg->sum_blk; | |
e79efe3b | 864 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 865 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
866 | } |
867 | ||
0a8165d7 | 868 | /* |
351df4b2 JK |
869 | * Calculate the number of current summary pages for writing |
870 | */ | |
3fa06d7b | 871 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 872 | { |
351df4b2 | 873 | int valid_sum_count = 0; |
9a47938b | 874 | int i, sum_in_page; |
351df4b2 JK |
875 | |
876 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
877 | if (sbi->ckpt->alloc_type[i] == SSR) | |
878 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
879 | else { |
880 | if (for_ra) | |
881 | valid_sum_count += le16_to_cpu( | |
882 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
883 | else | |
884 | valid_sum_count += curseg_blkoff(sbi, i); | |
885 | } | |
351df4b2 JK |
886 | } |
887 | ||
09cbfeaf | 888 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
889 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
890 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 891 | return 1; |
9a47938b | 892 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 893 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
894 | return 2; |
895 | return 3; | |
896 | } | |
897 | ||
0a8165d7 | 898 | /* |
351df4b2 JK |
899 | * Caller should put this summary page |
900 | */ | |
901 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
902 | { | |
903 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
904 | } | |
905 | ||
381722d2 | 906 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
907 | { |
908 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 CY |
909 | void *dst = page_address(page); |
910 | ||
911 | if (src) | |
09cbfeaf | 912 | memcpy(dst, src, PAGE_SIZE); |
381722d2 | 913 | else |
09cbfeaf | 914 | memset(dst, 0, PAGE_SIZE); |
351df4b2 JK |
915 | set_page_dirty(page); |
916 | f2fs_put_page(page, 1); | |
917 | } | |
918 | ||
381722d2 CY |
919 | static void write_sum_page(struct f2fs_sb_info *sbi, |
920 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
921 | { | |
922 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
923 | } | |
924 | ||
b7ad7512 CY |
925 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
926 | int type, block_t blk_addr) | |
927 | { | |
928 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
929 | struct page *page = grab_meta_page(sbi, blk_addr); | |
930 | struct f2fs_summary_block *src = curseg->sum_blk; | |
931 | struct f2fs_summary_block *dst; | |
932 | ||
933 | dst = (struct f2fs_summary_block *)page_address(page); | |
934 | ||
935 | mutex_lock(&curseg->curseg_mutex); | |
936 | ||
937 | down_read(&curseg->journal_rwsem); | |
938 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
939 | up_read(&curseg->journal_rwsem); | |
940 | ||
941 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
942 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
943 | ||
944 | mutex_unlock(&curseg->curseg_mutex); | |
945 | ||
946 | set_page_dirty(page); | |
947 | f2fs_put_page(page, 1); | |
948 | } | |
949 | ||
60374688 JK |
950 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
951 | { | |
952 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
81fb5e87 | 953 | unsigned int segno = curseg->segno + 1; |
60374688 JK |
954 | struct free_segmap_info *free_i = FREE_I(sbi); |
955 | ||
7cd8558b | 956 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) |
81fb5e87 | 957 | return !test_bit(segno, free_i->free_segmap); |
60374688 JK |
958 | return 0; |
959 | } | |
960 | ||
0a8165d7 | 961 | /* |
351df4b2 JK |
962 | * Find a new segment from the free segments bitmap to right order |
963 | * This function should be returned with success, otherwise BUG | |
964 | */ | |
965 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
966 | unsigned int *newseg, bool new_sec, int dir) | |
967 | { | |
968 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 969 | unsigned int segno, secno, zoneno; |
7cd8558b | 970 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
351df4b2 JK |
971 | unsigned int hint = *newseg / sbi->segs_per_sec; |
972 | unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); | |
973 | unsigned int left_start = hint; | |
974 | bool init = true; | |
975 | int go_left = 0; | |
976 | int i; | |
977 | ||
1a118ccf | 978 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
979 | |
980 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
981 | segno = find_next_zero_bit(free_i->free_segmap, | |
0ab14356 CY |
982 | (hint + 1) * sbi->segs_per_sec, *newseg + 1); |
983 | if (segno < (hint + 1) * sbi->segs_per_sec) | |
351df4b2 JK |
984 | goto got_it; |
985 | } | |
986 | find_other_zone: | |
7cd8558b JK |
987 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
988 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
989 | if (dir == ALLOC_RIGHT) { |
990 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
991 | MAIN_SECS(sbi), 0); |
992 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
993 | } else { |
994 | go_left = 1; | |
995 | left_start = hint - 1; | |
996 | } | |
997 | } | |
998 | if (go_left == 0) | |
999 | goto skip_left; | |
1000 | ||
1001 | while (test_bit(left_start, free_i->free_secmap)) { | |
1002 | if (left_start > 0) { | |
1003 | left_start--; | |
1004 | continue; | |
1005 | } | |
1006 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
1007 | MAIN_SECS(sbi), 0); |
1008 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
1009 | break; |
1010 | } | |
1011 | secno = left_start; | |
1012 | skip_left: | |
1013 | hint = secno; | |
1014 | segno = secno * sbi->segs_per_sec; | |
1015 | zoneno = secno / sbi->secs_per_zone; | |
1016 | ||
1017 | /* give up on finding another zone */ | |
1018 | if (!init) | |
1019 | goto got_it; | |
1020 | if (sbi->secs_per_zone == 1) | |
1021 | goto got_it; | |
1022 | if (zoneno == old_zoneno) | |
1023 | goto got_it; | |
1024 | if (dir == ALLOC_LEFT) { | |
1025 | if (!go_left && zoneno + 1 >= total_zones) | |
1026 | goto got_it; | |
1027 | if (go_left && zoneno == 0) | |
1028 | goto got_it; | |
1029 | } | |
1030 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
1031 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
1032 | break; | |
1033 | ||
1034 | if (i < NR_CURSEG_TYPE) { | |
1035 | /* zone is in user, try another */ | |
1036 | if (go_left) | |
1037 | hint = zoneno * sbi->secs_per_zone - 1; | |
1038 | else if (zoneno + 1 >= total_zones) | |
1039 | hint = 0; | |
1040 | else | |
1041 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
1042 | init = false; | |
1043 | goto find_other_zone; | |
1044 | } | |
1045 | got_it: | |
1046 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 1047 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
1048 | __set_inuse(sbi, segno); |
1049 | *newseg = segno; | |
1a118ccf | 1050 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
1051 | } |
1052 | ||
1053 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
1054 | { | |
1055 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1056 | struct summary_footer *sum_footer; | |
1057 | ||
1058 | curseg->segno = curseg->next_segno; | |
1059 | curseg->zone = GET_ZONENO_FROM_SEGNO(sbi, curseg->segno); | |
1060 | curseg->next_blkoff = 0; | |
1061 | curseg->next_segno = NULL_SEGNO; | |
1062 | ||
1063 | sum_footer = &(curseg->sum_blk->footer); | |
1064 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
1065 | if (IS_DATASEG(type)) | |
1066 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
1067 | if (IS_NODESEG(type)) | |
1068 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
1069 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
1070 | } | |
1071 | ||
0a8165d7 | 1072 | /* |
351df4b2 JK |
1073 | * Allocate a current working segment. |
1074 | * This function always allocates a free segment in LFS manner. | |
1075 | */ | |
1076 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
1077 | { | |
1078 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1079 | unsigned int segno = curseg->segno; | |
1080 | int dir = ALLOC_LEFT; | |
1081 | ||
1082 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 1083 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
1084 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
1085 | dir = ALLOC_RIGHT; | |
1086 | ||
1087 | if (test_opt(sbi, NOHEAP)) | |
1088 | dir = ALLOC_RIGHT; | |
1089 | ||
1090 | get_new_segment(sbi, &segno, new_sec, dir); | |
1091 | curseg->next_segno = segno; | |
1092 | reset_curseg(sbi, type, 1); | |
1093 | curseg->alloc_type = LFS; | |
1094 | } | |
1095 | ||
1096 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
1097 | struct curseg_info *seg, block_t start) | |
1098 | { | |
1099 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 1100 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 1101 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
1102 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
1103 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
1104 | int i, pos; | |
1105 | ||
1106 | for (i = 0; i < entries; i++) | |
1107 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
1108 | ||
1109 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
1110 | ||
1111 | seg->next_blkoff = pos; | |
351df4b2 JK |
1112 | } |
1113 | ||
0a8165d7 | 1114 | /* |
351df4b2 JK |
1115 | * If a segment is written by LFS manner, next block offset is just obtained |
1116 | * by increasing the current block offset. However, if a segment is written by | |
1117 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
1118 | */ | |
1119 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
1120 | struct curseg_info *seg) | |
1121 | { | |
1122 | if (seg->alloc_type == SSR) | |
1123 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
1124 | else | |
1125 | seg->next_blkoff++; | |
1126 | } | |
1127 | ||
0a8165d7 | 1128 | /* |
e1c42045 | 1129 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
1130 | * manner, so it should recover the existing segment information of valid blocks |
1131 | */ | |
1132 | static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) | |
1133 | { | |
1134 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
1135 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1136 | unsigned int new_segno = curseg->next_segno; | |
1137 | struct f2fs_summary_block *sum_node; | |
1138 | struct page *sum_page; | |
1139 | ||
1140 | write_sum_page(sbi, curseg->sum_blk, | |
1141 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
1142 | __set_test_and_inuse(sbi, new_segno); | |
1143 | ||
1144 | mutex_lock(&dirty_i->seglist_lock); | |
1145 | __remove_dirty_segment(sbi, new_segno, PRE); | |
1146 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
1147 | mutex_unlock(&dirty_i->seglist_lock); | |
1148 | ||
1149 | reset_curseg(sbi, type, 1); | |
1150 | curseg->alloc_type = SSR; | |
1151 | __next_free_blkoff(sbi, curseg, 0); | |
1152 | ||
1153 | if (reuse) { | |
1154 | sum_page = get_sum_page(sbi, new_segno); | |
1155 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
1156 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
1157 | f2fs_put_page(sum_page, 1); | |
1158 | } | |
1159 | } | |
1160 | ||
43727527 JK |
1161 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
1162 | { | |
1163 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1164 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
1165 | ||
1166 | if (IS_NODESEG(type) || !has_not_enough_free_secs(sbi, 0)) | |
1167 | return v_ops->get_victim(sbi, | |
1168 | &(curseg)->next_segno, BG_GC, type, SSR); | |
1169 | ||
1170 | /* For data segments, let's do SSR more intensively */ | |
1171 | for (; type >= CURSEG_HOT_DATA; type--) | |
1172 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, | |
1173 | BG_GC, type, SSR)) | |
1174 | return 1; | |
1175 | return 0; | |
1176 | } | |
1177 | ||
351df4b2 JK |
1178 | /* |
1179 | * flush out current segment and replace it with new segment | |
1180 | * This function should be returned with success, otherwise BUG | |
1181 | */ | |
1182 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
1183 | int type, bool force) | |
1184 | { | |
1185 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
351df4b2 | 1186 | |
7b405275 | 1187 | if (force) |
351df4b2 | 1188 | new_curseg(sbi, type, true); |
7b405275 | 1189 | else if (type == CURSEG_WARM_NODE) |
351df4b2 | 1190 | new_curseg(sbi, type, false); |
60374688 JK |
1191 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
1192 | new_curseg(sbi, type, false); | |
351df4b2 JK |
1193 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
1194 | change_curseg(sbi, type, true); | |
1195 | else | |
1196 | new_curseg(sbi, type, false); | |
dcdfff65 JK |
1197 | |
1198 | stat_inc_seg_type(sbi, curseg); | |
351df4b2 JK |
1199 | } |
1200 | ||
38aa0889 JK |
1201 | static void __allocate_new_segments(struct f2fs_sb_info *sbi, int type) |
1202 | { | |
1203 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1204 | unsigned int old_segno; | |
1205 | ||
1206 | old_segno = curseg->segno; | |
1207 | SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true); | |
1208 | locate_dirty_segment(sbi, old_segno); | |
1209 | } | |
1210 | ||
351df4b2 JK |
1211 | void allocate_new_segments(struct f2fs_sb_info *sbi) |
1212 | { | |
351df4b2 JK |
1213 | int i; |
1214 | ||
38aa0889 JK |
1215 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) |
1216 | __allocate_new_segments(sbi, i); | |
351df4b2 JK |
1217 | } |
1218 | ||
1219 | static const struct segment_allocation default_salloc_ops = { | |
1220 | .allocate_segment = allocate_segment_by_default, | |
1221 | }; | |
1222 | ||
4b2fecc8 JK |
1223 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
1224 | { | |
f7ef9b83 JK |
1225 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
1226 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
4b2fecc8 JK |
1227 | unsigned int start_segno, end_segno; |
1228 | struct cp_control cpc; | |
c34f42e2 | 1229 | int err = 0; |
4b2fecc8 | 1230 | |
836b5a63 | 1231 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
1232 | return -EINVAL; |
1233 | ||
9bd27ae4 | 1234 | cpc.trimmed = 0; |
7cd8558b | 1235 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
1236 | goto out; |
1237 | ||
1238 | /* start/end segment number in main_area */ | |
7cd8558b JK |
1239 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
1240 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
1241 | GET_SEGNO(sbi, end); | |
4b2fecc8 | 1242 | cpc.reason = CP_DISCARD; |
836b5a63 | 1243 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
1244 | |
1245 | /* do checkpoint to issue discard commands safely */ | |
bba681cb JK |
1246 | for (; start_segno <= end_segno; start_segno = cpc.trim_end + 1) { |
1247 | cpc.trim_start = start_segno; | |
a66cdd98 JK |
1248 | |
1249 | if (sbi->discard_blks == 0) | |
1250 | break; | |
1251 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
1252 | cpc.trim_end = end_segno; | |
1253 | else | |
1254 | cpc.trim_end = min_t(unsigned int, | |
1255 | rounddown(start_segno + | |
bba681cb JK |
1256 | BATCHED_TRIM_SEGMENTS(sbi), |
1257 | sbi->segs_per_sec) - 1, end_segno); | |
1258 | ||
1259 | mutex_lock(&sbi->gc_mutex); | |
c34f42e2 | 1260 | err = write_checkpoint(sbi, &cpc); |
bba681cb JK |
1261 | mutex_unlock(&sbi->gc_mutex); |
1262 | } | |
4b2fecc8 | 1263 | out: |
f7ef9b83 | 1264 | range->len = F2FS_BLK_TO_BYTES(cpc.trimmed); |
c34f42e2 | 1265 | return err; |
4b2fecc8 JK |
1266 | } |
1267 | ||
351df4b2 JK |
1268 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
1269 | { | |
1270 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1271 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
1272 | return true; | |
1273 | return false; | |
1274 | } | |
1275 | ||
1276 | static int __get_segment_type_2(struct page *page, enum page_type p_type) | |
1277 | { | |
1278 | if (p_type == DATA) | |
1279 | return CURSEG_HOT_DATA; | |
1280 | else | |
1281 | return CURSEG_HOT_NODE; | |
1282 | } | |
1283 | ||
1284 | static int __get_segment_type_4(struct page *page, enum page_type p_type) | |
1285 | { | |
1286 | if (p_type == DATA) { | |
1287 | struct inode *inode = page->mapping->host; | |
1288 | ||
1289 | if (S_ISDIR(inode->i_mode)) | |
1290 | return CURSEG_HOT_DATA; | |
1291 | else | |
1292 | return CURSEG_COLD_DATA; | |
1293 | } else { | |
a344b9fd JK |
1294 | if (IS_DNODE(page) && is_cold_node(page)) |
1295 | return CURSEG_WARM_NODE; | |
351df4b2 JK |
1296 | else |
1297 | return CURSEG_COLD_NODE; | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | static int __get_segment_type_6(struct page *page, enum page_type p_type) | |
1302 | { | |
1303 | if (p_type == DATA) { | |
1304 | struct inode *inode = page->mapping->host; | |
1305 | ||
1306 | if (S_ISDIR(inode->i_mode)) | |
1307 | return CURSEG_HOT_DATA; | |
354a3399 | 1308 | else if (is_cold_data(page) || file_is_cold(inode)) |
351df4b2 JK |
1309 | return CURSEG_COLD_DATA; |
1310 | else | |
1311 | return CURSEG_WARM_DATA; | |
1312 | } else { | |
1313 | if (IS_DNODE(page)) | |
1314 | return is_cold_node(page) ? CURSEG_WARM_NODE : | |
1315 | CURSEG_HOT_NODE; | |
1316 | else | |
1317 | return CURSEG_COLD_NODE; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | static int __get_segment_type(struct page *page, enum page_type p_type) | |
1322 | { | |
4081363f | 1323 | switch (F2FS_P_SB(page)->active_logs) { |
351df4b2 JK |
1324 | case 2: |
1325 | return __get_segment_type_2(page, p_type); | |
1326 | case 4: | |
1327 | return __get_segment_type_4(page, p_type); | |
351df4b2 | 1328 | } |
12a67146 | 1329 | /* NR_CURSEG_TYPE(6) logs by default */ |
9850cf4a JK |
1330 | f2fs_bug_on(F2FS_P_SB(page), |
1331 | F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); | |
12a67146 | 1332 | return __get_segment_type_6(page, p_type); |
351df4b2 JK |
1333 | } |
1334 | ||
bfad7c2d JK |
1335 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
1336 | block_t old_blkaddr, block_t *new_blkaddr, | |
1337 | struct f2fs_summary *sum, int type) | |
351df4b2 JK |
1338 | { |
1339 | struct sit_info *sit_i = SIT_I(sbi); | |
1340 | struct curseg_info *curseg; | |
38aa0889 JK |
1341 | bool direct_io = (type == CURSEG_DIRECT_IO); |
1342 | ||
1343 | type = direct_io ? CURSEG_WARM_DATA : type; | |
351df4b2 | 1344 | |
351df4b2 JK |
1345 | curseg = CURSEG_I(sbi, type); |
1346 | ||
1347 | mutex_lock(&curseg->curseg_mutex); | |
21cb1d99 | 1348 | mutex_lock(&sit_i->sentry_lock); |
351df4b2 | 1349 | |
38aa0889 | 1350 | /* direct_io'ed data is aligned to the segment for better performance */ |
47e70ca4 JK |
1351 | if (direct_io && curseg->next_blkoff && |
1352 | !has_not_enough_free_secs(sbi, 0)) | |
38aa0889 JK |
1353 | __allocate_new_segments(sbi, type); |
1354 | ||
351df4b2 | 1355 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
351df4b2 JK |
1356 | |
1357 | /* | |
1358 | * __add_sum_entry should be resided under the curseg_mutex | |
1359 | * because, this function updates a summary entry in the | |
1360 | * current summary block. | |
1361 | */ | |
e79efe3b | 1362 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1363 | |
351df4b2 | 1364 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
1365 | |
1366 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 1367 | |
5e443818 JK |
1368 | if (!__has_curseg_space(sbi, type)) |
1369 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
351df4b2 JK |
1370 | /* |
1371 | * SIT information should be updated before segment allocation, | |
1372 | * since SSR needs latest valid block information. | |
1373 | */ | |
1374 | refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); | |
5e443818 | 1375 | |
351df4b2 JK |
1376 | mutex_unlock(&sit_i->sentry_lock); |
1377 | ||
bfad7c2d | 1378 | if (page && IS_NODESEG(type)) |
351df4b2 JK |
1379 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
1380 | ||
bfad7c2d JK |
1381 | mutex_unlock(&curseg->curseg_mutex); |
1382 | } | |
1383 | ||
05ca3632 | 1384 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 1385 | { |
05ca3632 | 1386 | int type = __get_segment_type(fio->page, fio->type); |
bfad7c2d | 1387 | |
7a9d7548 CY |
1388 | allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
1389 | &fio->new_blkaddr, sum, type); | |
bfad7c2d | 1390 | |
351df4b2 | 1391 | /* writeout dirty page into bdev */ |
05ca3632 | 1392 | f2fs_submit_page_mbio(fio); |
351df4b2 JK |
1393 | } |
1394 | ||
577e3495 | 1395 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) |
351df4b2 | 1396 | { |
458e6197 | 1397 | struct f2fs_io_info fio = { |
05ca3632 | 1398 | .sbi = sbi, |
458e6197 | 1399 | .type = META, |
cf04e8eb | 1400 | .rw = WRITE_SYNC | REQ_META | REQ_PRIO, |
7a9d7548 CY |
1401 | .old_blkaddr = page->index, |
1402 | .new_blkaddr = page->index, | |
05ca3632 | 1403 | .page = page, |
4375a336 | 1404 | .encrypted_page = NULL, |
458e6197 JK |
1405 | }; |
1406 | ||
2b947003 CY |
1407 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
1408 | fio.rw &= ~REQ_META; | |
1409 | ||
351df4b2 | 1410 | set_page_writeback(page); |
05ca3632 | 1411 | f2fs_submit_page_mbio(&fio); |
351df4b2 JK |
1412 | } |
1413 | ||
05ca3632 | 1414 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
1415 | { |
1416 | struct f2fs_summary sum; | |
05ca3632 | 1417 | |
351df4b2 | 1418 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 1419 | do_write_page(&sum, fio); |
351df4b2 JK |
1420 | } |
1421 | ||
05ca3632 | 1422 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 1423 | { |
05ca3632 | 1424 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
1425 | struct f2fs_summary sum; |
1426 | struct node_info ni; | |
1427 | ||
9850cf4a | 1428 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
1429 | get_node_info(sbi, dn->nid, &ni); |
1430 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 1431 | do_write_page(&sum, fio); |
f28b3434 | 1432 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
351df4b2 JK |
1433 | } |
1434 | ||
05ca3632 | 1435 | void rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 1436 | { |
7a9d7548 | 1437 | fio->new_blkaddr = fio->old_blkaddr; |
05ca3632 JK |
1438 | stat_inc_inplace_blocks(fio->sbi); |
1439 | f2fs_submit_page_mbio(fio); | |
351df4b2 JK |
1440 | } |
1441 | ||
4356e48e | 1442 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 1443 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 1444 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
1445 | { |
1446 | struct sit_info *sit_i = SIT_I(sbi); | |
1447 | struct curseg_info *curseg; | |
1448 | unsigned int segno, old_cursegno; | |
1449 | struct seg_entry *se; | |
1450 | int type; | |
19f106bc | 1451 | unsigned short old_blkoff; |
351df4b2 JK |
1452 | |
1453 | segno = GET_SEGNO(sbi, new_blkaddr); | |
1454 | se = get_seg_entry(sbi, segno); | |
1455 | type = se->type; | |
1456 | ||
19f106bc CY |
1457 | if (!recover_curseg) { |
1458 | /* for recovery flow */ | |
1459 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
1460 | if (old_blkaddr == NULL_ADDR) | |
1461 | type = CURSEG_COLD_DATA; | |
1462 | else | |
1463 | type = CURSEG_WARM_DATA; | |
1464 | } | |
1465 | } else { | |
1466 | if (!IS_CURSEG(sbi, segno)) | |
351df4b2 JK |
1467 | type = CURSEG_WARM_DATA; |
1468 | } | |
19f106bc | 1469 | |
351df4b2 JK |
1470 | curseg = CURSEG_I(sbi, type); |
1471 | ||
1472 | mutex_lock(&curseg->curseg_mutex); | |
1473 | mutex_lock(&sit_i->sentry_lock); | |
1474 | ||
1475 | old_cursegno = curseg->segno; | |
19f106bc | 1476 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
1477 | |
1478 | /* change the current segment */ | |
1479 | if (segno != curseg->segno) { | |
1480 | curseg->next_segno = segno; | |
1481 | change_curseg(sbi, type, true); | |
1482 | } | |
1483 | ||
491c0854 | 1484 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 1485 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1486 | |
28bc106b | 1487 | if (!recover_curseg || recover_newaddr) |
6e2c64ad JK |
1488 | update_sit_entry(sbi, new_blkaddr, 1); |
1489 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
1490 | update_sit_entry(sbi, old_blkaddr, -1); | |
1491 | ||
1492 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
1493 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
1494 | ||
351df4b2 | 1495 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 1496 | |
19f106bc CY |
1497 | if (recover_curseg) { |
1498 | if (old_cursegno != curseg->segno) { | |
1499 | curseg->next_segno = old_cursegno; | |
1500 | change_curseg(sbi, type, true); | |
1501 | } | |
1502 | curseg->next_blkoff = old_blkoff; | |
1503 | } | |
1504 | ||
351df4b2 JK |
1505 | mutex_unlock(&sit_i->sentry_lock); |
1506 | mutex_unlock(&curseg->curseg_mutex); | |
1507 | } | |
1508 | ||
528e3459 CY |
1509 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
1510 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
1511 | unsigned char version, bool recover_curseg, |
1512 | bool recover_newaddr) | |
528e3459 CY |
1513 | { |
1514 | struct f2fs_summary sum; | |
1515 | ||
1516 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
1517 | ||
28bc106b CY |
1518 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, |
1519 | recover_curseg, recover_newaddr); | |
528e3459 | 1520 | |
f28b3434 | 1521 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
1522 | } |
1523 | ||
93dfe2ac | 1524 | void f2fs_wait_on_page_writeback(struct page *page, |
fec1d657 | 1525 | enum page_type type, bool ordered) |
93dfe2ac | 1526 | { |
93dfe2ac | 1527 | if (PageWriteback(page)) { |
4081363f JK |
1528 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
1529 | ||
0c3a5797 | 1530 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, type, WRITE); |
fec1d657 JK |
1531 | if (ordered) |
1532 | wait_on_page_writeback(page); | |
1533 | else | |
1534 | wait_for_stable_page(page); | |
93dfe2ac JK |
1535 | } |
1536 | } | |
1537 | ||
08b39fbd CY |
1538 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *sbi, |
1539 | block_t blkaddr) | |
1540 | { | |
1541 | struct page *cpage; | |
1542 | ||
1543 | if (blkaddr == NEW_ADDR) | |
1544 | return; | |
1545 | ||
1546 | f2fs_bug_on(sbi, blkaddr == NULL_ADDR); | |
1547 | ||
1548 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); | |
1549 | if (cpage) { | |
fec1d657 | 1550 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
08b39fbd CY |
1551 | f2fs_put_page(cpage, 1); |
1552 | } | |
1553 | } | |
1554 | ||
351df4b2 JK |
1555 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
1556 | { | |
1557 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1558 | struct curseg_info *seg_i; | |
1559 | unsigned char *kaddr; | |
1560 | struct page *page; | |
1561 | block_t start; | |
1562 | int i, j, offset; | |
1563 | ||
1564 | start = start_sum_block(sbi); | |
1565 | ||
1566 | page = get_meta_page(sbi, start++); | |
1567 | kaddr = (unsigned char *)page_address(page); | |
1568 | ||
1569 | /* Step 1: restore nat cache */ | |
1570 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 1571 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1572 | |
1573 | /* Step 2: restore sit cache */ | |
1574 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 1575 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1576 | offset = 2 * SUM_JOURNAL_SIZE; |
1577 | ||
1578 | /* Step 3: restore summary entries */ | |
1579 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1580 | unsigned short blk_off; | |
1581 | unsigned int segno; | |
1582 | ||
1583 | seg_i = CURSEG_I(sbi, i); | |
1584 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
1585 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
1586 | seg_i->next_segno = segno; | |
1587 | reset_curseg(sbi, i, 0); | |
1588 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
1589 | seg_i->next_blkoff = blk_off; | |
1590 | ||
1591 | if (seg_i->alloc_type == SSR) | |
1592 | blk_off = sbi->blocks_per_seg; | |
1593 | ||
1594 | for (j = 0; j < blk_off; j++) { | |
1595 | struct f2fs_summary *s; | |
1596 | s = (struct f2fs_summary *)(kaddr + offset); | |
1597 | seg_i->sum_blk->entries[j] = *s; | |
1598 | offset += SUMMARY_SIZE; | |
09cbfeaf | 1599 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
1600 | SUM_FOOTER_SIZE) |
1601 | continue; | |
1602 | ||
1603 | f2fs_put_page(page, 1); | |
1604 | page = NULL; | |
1605 | ||
1606 | page = get_meta_page(sbi, start++); | |
1607 | kaddr = (unsigned char *)page_address(page); | |
1608 | offset = 0; | |
1609 | } | |
1610 | } | |
1611 | f2fs_put_page(page, 1); | |
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
1616 | { | |
1617 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1618 | struct f2fs_summary_block *sum; | |
1619 | struct curseg_info *curseg; | |
1620 | struct page *new; | |
1621 | unsigned short blk_off; | |
1622 | unsigned int segno = 0; | |
1623 | block_t blk_addr = 0; | |
1624 | ||
1625 | /* get segment number and block addr */ | |
1626 | if (IS_DATASEG(type)) { | |
1627 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
1628 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
1629 | CURSEG_HOT_DATA]); | |
119ee914 | 1630 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1631 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
1632 | else | |
1633 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
1634 | } else { | |
1635 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
1636 | CURSEG_HOT_NODE]); | |
1637 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
1638 | CURSEG_HOT_NODE]); | |
119ee914 | 1639 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1640 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
1641 | type - CURSEG_HOT_NODE); | |
1642 | else | |
1643 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
1644 | } | |
1645 | ||
1646 | new = get_meta_page(sbi, blk_addr); | |
1647 | sum = (struct f2fs_summary_block *)page_address(new); | |
1648 | ||
1649 | if (IS_NODESEG(type)) { | |
119ee914 | 1650 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
1651 | struct f2fs_summary *ns = &sum->entries[0]; |
1652 | int i; | |
1653 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
1654 | ns->version = 0; | |
1655 | ns->ofs_in_node = 0; | |
1656 | } | |
1657 | } else { | |
d653788a GZ |
1658 | int err; |
1659 | ||
1660 | err = restore_node_summary(sbi, segno, sum); | |
1661 | if (err) { | |
351df4b2 | 1662 | f2fs_put_page(new, 1); |
d653788a | 1663 | return err; |
351df4b2 JK |
1664 | } |
1665 | } | |
1666 | } | |
1667 | ||
1668 | /* set uncompleted segment to curseg */ | |
1669 | curseg = CURSEG_I(sbi, type); | |
1670 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
1671 | |
1672 | /* update journal info */ | |
1673 | down_write(&curseg->journal_rwsem); | |
1674 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
1675 | up_write(&curseg->journal_rwsem); | |
1676 | ||
1677 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
1678 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
1679 | curseg->next_segno = segno; |
1680 | reset_curseg(sbi, type, 0); | |
1681 | curseg->alloc_type = ckpt->alloc_type[type]; | |
1682 | curseg->next_blkoff = blk_off; | |
1683 | mutex_unlock(&curseg->curseg_mutex); | |
1684 | f2fs_put_page(new, 1); | |
1685 | return 0; | |
1686 | } | |
1687 | ||
1688 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
1689 | { | |
1690 | int type = CURSEG_HOT_DATA; | |
e4fc5fbf | 1691 | int err; |
351df4b2 | 1692 | |
25ca923b | 1693 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
1694 | int npages = npages_for_summary_flush(sbi, true); |
1695 | ||
1696 | if (npages >= 2) | |
1697 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
26879fb1 | 1698 | META_CP, true); |
3fa06d7b | 1699 | |
351df4b2 JK |
1700 | /* restore for compacted data summary */ |
1701 | if (read_compacted_summaries(sbi)) | |
1702 | return -EINVAL; | |
1703 | type = CURSEG_HOT_NODE; | |
1704 | } | |
1705 | ||
119ee914 | 1706 | if (__exist_node_summaries(sbi)) |
3fa06d7b | 1707 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 1708 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 1709 | |
e4fc5fbf CY |
1710 | for (; type <= CURSEG_COLD_NODE; type++) { |
1711 | err = read_normal_summaries(sbi, type); | |
1712 | if (err) | |
1713 | return err; | |
1714 | } | |
1715 | ||
351df4b2 JK |
1716 | return 0; |
1717 | } | |
1718 | ||
1719 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
1720 | { | |
1721 | struct page *page; | |
1722 | unsigned char *kaddr; | |
1723 | struct f2fs_summary *summary; | |
1724 | struct curseg_info *seg_i; | |
1725 | int written_size = 0; | |
1726 | int i, j; | |
1727 | ||
1728 | page = grab_meta_page(sbi, blkaddr++); | |
1729 | kaddr = (unsigned char *)page_address(page); | |
1730 | ||
1731 | /* Step 1: write nat cache */ | |
1732 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 1733 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1734 | written_size += SUM_JOURNAL_SIZE; |
1735 | ||
1736 | /* Step 2: write sit cache */ | |
1737 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 1738 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1739 | written_size += SUM_JOURNAL_SIZE; |
1740 | ||
351df4b2 JK |
1741 | /* Step 3: write summary entries */ |
1742 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1743 | unsigned short blkoff; | |
1744 | seg_i = CURSEG_I(sbi, i); | |
1745 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1746 | blkoff = sbi->blocks_per_seg; | |
1747 | else | |
1748 | blkoff = curseg_blkoff(sbi, i); | |
1749 | ||
1750 | for (j = 0; j < blkoff; j++) { | |
1751 | if (!page) { | |
1752 | page = grab_meta_page(sbi, blkaddr++); | |
1753 | kaddr = (unsigned char *)page_address(page); | |
1754 | written_size = 0; | |
1755 | } | |
1756 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
1757 | *summary = seg_i->sum_blk->entries[j]; | |
1758 | written_size += SUMMARY_SIZE; | |
351df4b2 | 1759 | |
09cbfeaf | 1760 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
1761 | SUM_FOOTER_SIZE) |
1762 | continue; | |
1763 | ||
e8d61a74 | 1764 | set_page_dirty(page); |
351df4b2 JK |
1765 | f2fs_put_page(page, 1); |
1766 | page = NULL; | |
1767 | } | |
1768 | } | |
e8d61a74 CY |
1769 | if (page) { |
1770 | set_page_dirty(page); | |
351df4b2 | 1771 | f2fs_put_page(page, 1); |
e8d61a74 | 1772 | } |
351df4b2 JK |
1773 | } |
1774 | ||
1775 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
1776 | block_t blkaddr, int type) | |
1777 | { | |
1778 | int i, end; | |
1779 | if (IS_DATASEG(type)) | |
1780 | end = type + NR_CURSEG_DATA_TYPE; | |
1781 | else | |
1782 | end = type + NR_CURSEG_NODE_TYPE; | |
1783 | ||
b7ad7512 CY |
1784 | for (i = type; i < end; i++) |
1785 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
1786 | } |
1787 | ||
1788 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1789 | { | |
25ca923b | 1790 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
1791 | write_compacted_summaries(sbi, start_blk); |
1792 | else | |
1793 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
1794 | } | |
1795 | ||
1796 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1797 | { | |
119ee914 | 1798 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
1799 | } |
1800 | ||
dfc08a12 | 1801 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
1802 | unsigned int val, int alloc) |
1803 | { | |
1804 | int i; | |
1805 | ||
1806 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
1807 | for (i = 0; i < nats_in_cursum(journal); i++) { |
1808 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
1809 | return i; |
1810 | } | |
dfc08a12 CY |
1811 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
1812 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 1813 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
1814 | for (i = 0; i < sits_in_cursum(journal); i++) |
1815 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 1816 | return i; |
dfc08a12 CY |
1817 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
1818 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
1819 | } |
1820 | return -1; | |
1821 | } | |
1822 | ||
1823 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
1824 | unsigned int segno) | |
1825 | { | |
2cc22186 | 1826 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
1827 | } |
1828 | ||
1829 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
1830 | unsigned int start) | |
1831 | { | |
1832 | struct sit_info *sit_i = SIT_I(sbi); | |
1833 | struct page *src_page, *dst_page; | |
1834 | pgoff_t src_off, dst_off; | |
1835 | void *src_addr, *dst_addr; | |
1836 | ||
1837 | src_off = current_sit_addr(sbi, start); | |
1838 | dst_off = next_sit_addr(sbi, src_off); | |
1839 | ||
1840 | /* get current sit block page without lock */ | |
1841 | src_page = get_meta_page(sbi, src_off); | |
1842 | dst_page = grab_meta_page(sbi, dst_off); | |
9850cf4a | 1843 | f2fs_bug_on(sbi, PageDirty(src_page)); |
351df4b2 JK |
1844 | |
1845 | src_addr = page_address(src_page); | |
1846 | dst_addr = page_address(dst_page); | |
09cbfeaf | 1847 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
351df4b2 JK |
1848 | |
1849 | set_page_dirty(dst_page); | |
1850 | f2fs_put_page(src_page, 1); | |
1851 | ||
1852 | set_to_next_sit(sit_i, start); | |
1853 | ||
1854 | return dst_page; | |
1855 | } | |
1856 | ||
184a5cd2 CY |
1857 | static struct sit_entry_set *grab_sit_entry_set(void) |
1858 | { | |
1859 | struct sit_entry_set *ses = | |
80c54505 | 1860 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
1861 | |
1862 | ses->entry_cnt = 0; | |
1863 | INIT_LIST_HEAD(&ses->set_list); | |
1864 | return ses; | |
1865 | } | |
1866 | ||
1867 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
1868 | { | |
1869 | list_del(&ses->set_list); | |
1870 | kmem_cache_free(sit_entry_set_slab, ses); | |
1871 | } | |
1872 | ||
1873 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
1874 | struct list_head *head) | |
1875 | { | |
1876 | struct sit_entry_set *next = ses; | |
1877 | ||
1878 | if (list_is_last(&ses->set_list, head)) | |
1879 | return; | |
1880 | ||
1881 | list_for_each_entry_continue(next, head, set_list) | |
1882 | if (ses->entry_cnt <= next->entry_cnt) | |
1883 | break; | |
1884 | ||
1885 | list_move_tail(&ses->set_list, &next->set_list); | |
1886 | } | |
1887 | ||
1888 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
1889 | { | |
1890 | struct sit_entry_set *ses; | |
1891 | unsigned int start_segno = START_SEGNO(segno); | |
1892 | ||
1893 | list_for_each_entry(ses, head, set_list) { | |
1894 | if (ses->start_segno == start_segno) { | |
1895 | ses->entry_cnt++; | |
1896 | adjust_sit_entry_set(ses, head); | |
1897 | return; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | ses = grab_sit_entry_set(); | |
1902 | ||
1903 | ses->start_segno = start_segno; | |
1904 | ses->entry_cnt++; | |
1905 | list_add(&ses->set_list, head); | |
1906 | } | |
1907 | ||
1908 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
1909 | { | |
1910 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
1911 | struct list_head *set_list = &sm_info->sit_entry_set; | |
1912 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
1913 | unsigned int segno; |
1914 | ||
7cd8558b | 1915 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
1916 | add_sit_entry(segno, set_list); |
1917 | } | |
1918 | ||
1919 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
1920 | { |
1921 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 1922 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
1923 | int i; |
1924 | ||
b7ad7512 | 1925 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 1926 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
1927 | unsigned int segno; |
1928 | bool dirtied; | |
1929 | ||
dfc08a12 | 1930 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
1931 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
1932 | ||
1933 | if (!dirtied) | |
1934 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 1935 | } |
dfc08a12 | 1936 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 1937 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
1938 | } |
1939 | ||
0a8165d7 | 1940 | /* |
351df4b2 JK |
1941 | * CP calls this function, which flushes SIT entries including sit_journal, |
1942 | * and moves prefree segs to free segs. | |
1943 | */ | |
4b2fecc8 | 1944 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
1945 | { |
1946 | struct sit_info *sit_i = SIT_I(sbi); | |
1947 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
1948 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 1949 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
1950 | struct sit_entry_set *ses, *tmp; |
1951 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 1952 | bool to_journal = true; |
4b2fecc8 | 1953 | struct seg_entry *se; |
351df4b2 | 1954 | |
351df4b2 JK |
1955 | mutex_lock(&sit_i->sentry_lock); |
1956 | ||
2b11a74b WL |
1957 | if (!sit_i->dirty_sentries) |
1958 | goto out; | |
1959 | ||
351df4b2 | 1960 | /* |
184a5cd2 CY |
1961 | * add and account sit entries of dirty bitmap in sit entry |
1962 | * set temporarily | |
351df4b2 | 1963 | */ |
184a5cd2 | 1964 | add_sits_in_set(sbi); |
351df4b2 | 1965 | |
184a5cd2 CY |
1966 | /* |
1967 | * if there are no enough space in journal to store dirty sit | |
1968 | * entries, remove all entries from journal and add and account | |
1969 | * them in sit entry set. | |
1970 | */ | |
dfc08a12 | 1971 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 1972 | remove_sits_in_journal(sbi); |
b2955550 | 1973 | |
184a5cd2 CY |
1974 | /* |
1975 | * there are two steps to flush sit entries: | |
1976 | * #1, flush sit entries to journal in current cold data summary block. | |
1977 | * #2, flush sit entries to sit page. | |
1978 | */ | |
1979 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 1980 | struct page *page = NULL; |
184a5cd2 CY |
1981 | struct f2fs_sit_block *raw_sit = NULL; |
1982 | unsigned int start_segno = ses->start_segno; | |
1983 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 1984 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
1985 | unsigned int segno = start_segno; |
1986 | ||
1987 | if (to_journal && | |
dfc08a12 | 1988 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
1989 | to_journal = false; |
1990 | ||
b7ad7512 CY |
1991 | if (to_journal) { |
1992 | down_write(&curseg->journal_rwsem); | |
1993 | } else { | |
184a5cd2 CY |
1994 | page = get_next_sit_page(sbi, start_segno); |
1995 | raw_sit = page_address(page); | |
351df4b2 | 1996 | } |
351df4b2 | 1997 | |
184a5cd2 CY |
1998 | /* flush dirty sit entries in region of current sit set */ |
1999 | for_each_set_bit_from(segno, bitmap, end) { | |
2000 | int offset, sit_offset; | |
4b2fecc8 JK |
2001 | |
2002 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
2003 | |
2004 | /* add discard candidates */ | |
d7bc2484 | 2005 | if (cpc->reason != CP_DISCARD) { |
4b2fecc8 JK |
2006 | cpc->trim_start = segno; |
2007 | add_discard_addrs(sbi, cpc); | |
2008 | } | |
184a5cd2 CY |
2009 | |
2010 | if (to_journal) { | |
dfc08a12 | 2011 | offset = lookup_journal_in_cursum(journal, |
184a5cd2 CY |
2012 | SIT_JOURNAL, segno, 1); |
2013 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 2014 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
2015 | cpu_to_le32(segno); |
2016 | seg_info_to_raw_sit(se, | |
dfc08a12 | 2017 | &sit_in_journal(journal, offset)); |
184a5cd2 CY |
2018 | } else { |
2019 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
2020 | seg_info_to_raw_sit(se, | |
2021 | &raw_sit->entries[sit_offset]); | |
2022 | } | |
351df4b2 | 2023 | |
184a5cd2 CY |
2024 | __clear_bit(segno, bitmap); |
2025 | sit_i->dirty_sentries--; | |
2026 | ses->entry_cnt--; | |
351df4b2 JK |
2027 | } |
2028 | ||
b7ad7512 CY |
2029 | if (to_journal) |
2030 | up_write(&curseg->journal_rwsem); | |
2031 | else | |
184a5cd2 CY |
2032 | f2fs_put_page(page, 1); |
2033 | ||
2034 | f2fs_bug_on(sbi, ses->entry_cnt); | |
2035 | release_sit_entry_set(ses); | |
351df4b2 | 2036 | } |
184a5cd2 CY |
2037 | |
2038 | f2fs_bug_on(sbi, !list_empty(head)); | |
2039 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 2040 | out: |
4b2fecc8 JK |
2041 | if (cpc->reason == CP_DISCARD) { |
2042 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) | |
2043 | add_discard_addrs(sbi, cpc); | |
2044 | } | |
351df4b2 | 2045 | mutex_unlock(&sit_i->sentry_lock); |
351df4b2 | 2046 | |
351df4b2 JK |
2047 | set_prefree_as_free_segments(sbi); |
2048 | } | |
2049 | ||
2050 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
2051 | { | |
2052 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2053 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2054 | struct sit_info *sit_i; | |
2055 | unsigned int sit_segs, start; | |
2056 | char *src_bitmap, *dst_bitmap; | |
2057 | unsigned int bitmap_size; | |
2058 | ||
2059 | /* allocate memory for SIT information */ | |
2060 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); | |
2061 | if (!sit_i) | |
2062 | return -ENOMEM; | |
2063 | ||
2064 | SM_I(sbi)->sit_info = sit_i; | |
2065 | ||
39307a8e JK |
2066 | sit_i->sentries = f2fs_kvzalloc(MAIN_SEGS(sbi) * |
2067 | sizeof(struct seg_entry), GFP_KERNEL); | |
351df4b2 JK |
2068 | if (!sit_i->sentries) |
2069 | return -ENOMEM; | |
2070 | ||
7cd8558b | 2071 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2072 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2073 | if (!sit_i->dirty_sentries_bitmap) |
2074 | return -ENOMEM; | |
2075 | ||
7cd8558b | 2076 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2077 | sit_i->sentries[start].cur_valid_map |
2078 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2079 | sit_i->sentries[start].ckpt_valid_map | |
2080 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
a66cdd98 JK |
2081 | sit_i->sentries[start].discard_map |
2082 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2083 | if (!sit_i->sentries[start].cur_valid_map || | |
2084 | !sit_i->sentries[start].ckpt_valid_map || | |
2085 | !sit_i->sentries[start].discard_map) | |
351df4b2 JK |
2086 | return -ENOMEM; |
2087 | } | |
2088 | ||
60a3b782 JK |
2089 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
2090 | if (!sit_i->tmp_map) | |
2091 | return -ENOMEM; | |
2092 | ||
351df4b2 | 2093 | if (sbi->segs_per_sec > 1) { |
39307a8e JK |
2094 | sit_i->sec_entries = f2fs_kvzalloc(MAIN_SECS(sbi) * |
2095 | sizeof(struct sec_entry), GFP_KERNEL); | |
351df4b2 JK |
2096 | if (!sit_i->sec_entries) |
2097 | return -ENOMEM; | |
2098 | } | |
2099 | ||
2100 | /* get information related with SIT */ | |
2101 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
2102 | ||
2103 | /* setup SIT bitmap from ckeckpoint pack */ | |
2104 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
2105 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
2106 | ||
79b5793b | 2107 | dst_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2108 | if (!dst_bitmap) |
2109 | return -ENOMEM; | |
351df4b2 JK |
2110 | |
2111 | /* init SIT information */ | |
2112 | sit_i->s_ops = &default_salloc_ops; | |
2113 | ||
2114 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
2115 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
2116 | sit_i->written_valid_blocks = le64_to_cpu(ckpt->valid_block_count); | |
2117 | sit_i->sit_bitmap = dst_bitmap; | |
2118 | sit_i->bitmap_size = bitmap_size; | |
2119 | sit_i->dirty_sentries = 0; | |
2120 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
2121 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
2122 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; | |
2123 | mutex_init(&sit_i->sentry_lock); | |
2124 | return 0; | |
2125 | } | |
2126 | ||
2127 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
2128 | { | |
351df4b2 JK |
2129 | struct free_segmap_info *free_i; |
2130 | unsigned int bitmap_size, sec_bitmap_size; | |
2131 | ||
2132 | /* allocate memory for free segmap information */ | |
2133 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); | |
2134 | if (!free_i) | |
2135 | return -ENOMEM; | |
2136 | ||
2137 | SM_I(sbi)->free_info = free_i; | |
2138 | ||
7cd8558b | 2139 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2140 | free_i->free_segmap = f2fs_kvmalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2141 | if (!free_i->free_segmap) |
2142 | return -ENOMEM; | |
2143 | ||
7cd8558b | 2144 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
39307a8e | 2145 | free_i->free_secmap = f2fs_kvmalloc(sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2146 | if (!free_i->free_secmap) |
2147 | return -ENOMEM; | |
2148 | ||
2149 | /* set all segments as dirty temporarily */ | |
2150 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
2151 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
2152 | ||
2153 | /* init free segmap information */ | |
7cd8558b | 2154 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
2155 | free_i->free_segments = 0; |
2156 | free_i->free_sections = 0; | |
1a118ccf | 2157 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
2158 | return 0; |
2159 | } | |
2160 | ||
2161 | static int build_curseg(struct f2fs_sb_info *sbi) | |
2162 | { | |
1042d60f | 2163 | struct curseg_info *array; |
351df4b2 JK |
2164 | int i; |
2165 | ||
b434babf | 2166 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
351df4b2 JK |
2167 | if (!array) |
2168 | return -ENOMEM; | |
2169 | ||
2170 | SM_I(sbi)->curseg_array = array; | |
2171 | ||
2172 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
2173 | mutex_init(&array[i].curseg_mutex); | |
09cbfeaf | 2174 | array[i].sum_blk = kzalloc(PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
2175 | if (!array[i].sum_blk) |
2176 | return -ENOMEM; | |
b7ad7512 CY |
2177 | init_rwsem(&array[i].journal_rwsem); |
2178 | array[i].journal = kzalloc(sizeof(struct f2fs_journal), | |
2179 | GFP_KERNEL); | |
2180 | if (!array[i].journal) | |
2181 | return -ENOMEM; | |
351df4b2 JK |
2182 | array[i].segno = NULL_SEGNO; |
2183 | array[i].next_blkoff = 0; | |
2184 | } | |
2185 | return restore_curseg_summaries(sbi); | |
2186 | } | |
2187 | ||
2188 | static void build_sit_entries(struct f2fs_sb_info *sbi) | |
2189 | { | |
2190 | struct sit_info *sit_i = SIT_I(sbi); | |
2191 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2192 | struct f2fs_journal *journal = curseg->journal; |
74de593a CY |
2193 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
2194 | unsigned int i, start, end; | |
2195 | unsigned int readed, start_blk = 0; | |
e9f5b8b8 | 2196 | int nrpages = MAX_BIO_BLOCKS(sbi) * 8; |
351df4b2 | 2197 | |
74de593a | 2198 | do { |
26879fb1 | 2199 | readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT, true); |
74de593a CY |
2200 | |
2201 | start = start_blk * sit_i->sents_per_block; | |
2202 | end = (start_blk + readed) * sit_i->sents_per_block; | |
2203 | ||
7cd8558b | 2204 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a CY |
2205 | struct seg_entry *se = &sit_i->sentries[start]; |
2206 | struct f2fs_sit_block *sit_blk; | |
2207 | struct f2fs_sit_entry sit; | |
2208 | struct page *page; | |
2209 | ||
b7ad7512 | 2210 | down_read(&curseg->journal_rwsem); |
dfc08a12 CY |
2211 | for (i = 0; i < sits_in_cursum(journal); i++) { |
2212 | if (le32_to_cpu(segno_in_journal(journal, i)) | |
6c311ec6 | 2213 | == start) { |
dfc08a12 | 2214 | sit = sit_in_journal(journal, i); |
b7ad7512 | 2215 | up_read(&curseg->journal_rwsem); |
74de593a CY |
2216 | goto got_it; |
2217 | } | |
351df4b2 | 2218 | } |
b7ad7512 | 2219 | up_read(&curseg->journal_rwsem); |
74de593a CY |
2220 | |
2221 | page = get_current_sit_page(sbi, start); | |
2222 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
2223 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
2224 | f2fs_put_page(page, 1); | |
351df4b2 | 2225 | got_it: |
74de593a CY |
2226 | check_block_count(sbi, start, &sit); |
2227 | seg_info_from_raw_sit(se, &sit); | |
a66cdd98 JK |
2228 | |
2229 | /* build discard map only one time */ | |
2230 | memcpy(se->discard_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE); | |
2231 | sbi->discard_blks += sbi->blocks_per_seg - se->valid_blocks; | |
2232 | ||
74de593a CY |
2233 | if (sbi->segs_per_sec > 1) { |
2234 | struct sec_entry *e = get_sec_entry(sbi, start); | |
2235 | e->valid_blocks += se->valid_blocks; | |
2236 | } | |
351df4b2 | 2237 | } |
74de593a CY |
2238 | start_blk += readed; |
2239 | } while (start_blk < sit_blk_cnt); | |
351df4b2 JK |
2240 | } |
2241 | ||
2242 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
2243 | { | |
2244 | unsigned int start; | |
2245 | int type; | |
2246 | ||
7cd8558b | 2247 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2248 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
2249 | if (!sentry->valid_blocks) | |
2250 | __set_free(sbi, start); | |
2251 | } | |
2252 | ||
2253 | /* set use the current segments */ | |
2254 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
2255 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
2256 | __set_test_and_inuse(sbi, curseg_t->segno); | |
2257 | } | |
2258 | } | |
2259 | ||
2260 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
2261 | { | |
2262 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2263 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 2264 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
2265 | unsigned short valid_blocks; |
2266 | ||
8736fbf0 | 2267 | while (1) { |
351df4b2 | 2268 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
2269 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
2270 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
2271 | break; |
2272 | offset = segno + 1; | |
2273 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
ec325b52 | 2274 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 2275 | continue; |
ec325b52 JK |
2276 | if (valid_blocks > sbi->blocks_per_seg) { |
2277 | f2fs_bug_on(sbi, 1); | |
2278 | continue; | |
2279 | } | |
351df4b2 JK |
2280 | mutex_lock(&dirty_i->seglist_lock); |
2281 | __locate_dirty_segment(sbi, segno, DIRTY); | |
2282 | mutex_unlock(&dirty_i->seglist_lock); | |
2283 | } | |
2284 | } | |
2285 | ||
5ec4e49f | 2286 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2287 | { |
2288 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 2289 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 2290 | |
39307a8e | 2291 | dirty_i->victim_secmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
5ec4e49f | 2292 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
2293 | return -ENOMEM; |
2294 | return 0; | |
2295 | } | |
2296 | ||
2297 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
2298 | { | |
2299 | struct dirty_seglist_info *dirty_i; | |
2300 | unsigned int bitmap_size, i; | |
2301 | ||
2302 | /* allocate memory for dirty segments list information */ | |
2303 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); | |
2304 | if (!dirty_i) | |
2305 | return -ENOMEM; | |
2306 | ||
2307 | SM_I(sbi)->dirty_info = dirty_i; | |
2308 | mutex_init(&dirty_i->seglist_lock); | |
2309 | ||
7cd8558b | 2310 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
2311 | |
2312 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
39307a8e | 2313 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2314 | if (!dirty_i->dirty_segmap[i]) |
2315 | return -ENOMEM; | |
2316 | } | |
2317 | ||
2318 | init_dirty_segmap(sbi); | |
5ec4e49f | 2319 | return init_victim_secmap(sbi); |
351df4b2 JK |
2320 | } |
2321 | ||
0a8165d7 | 2322 | /* |
351df4b2 JK |
2323 | * Update min, max modified time for cost-benefit GC algorithm |
2324 | */ | |
2325 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
2326 | { | |
2327 | struct sit_info *sit_i = SIT_I(sbi); | |
2328 | unsigned int segno; | |
2329 | ||
2330 | mutex_lock(&sit_i->sentry_lock); | |
2331 | ||
2332 | sit_i->min_mtime = LLONG_MAX; | |
2333 | ||
7cd8558b | 2334 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
2335 | unsigned int i; |
2336 | unsigned long long mtime = 0; | |
2337 | ||
2338 | for (i = 0; i < sbi->segs_per_sec; i++) | |
2339 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
2340 | ||
2341 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
2342 | ||
2343 | if (sit_i->min_mtime > mtime) | |
2344 | sit_i->min_mtime = mtime; | |
2345 | } | |
2346 | sit_i->max_mtime = get_mtime(sbi); | |
2347 | mutex_unlock(&sit_i->sentry_lock); | |
2348 | } | |
2349 | ||
2350 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
2351 | { | |
2352 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2353 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 2354 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
2355 | int err; |
2356 | ||
2357 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); | |
2358 | if (!sm_info) | |
2359 | return -ENOMEM; | |
2360 | ||
2361 | /* init sm info */ | |
2362 | sbi->sm_info = sm_info; | |
351df4b2 JK |
2363 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
2364 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
2365 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
2366 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
2367 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
2368 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
2369 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
2370 | sm_info->rec_prefree_segments = sm_info->main_segments * |
2371 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
9b5f136f | 2372 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; |
216fbd64 | 2373 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 2374 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
351df4b2 | 2375 | |
7fd9e544 JK |
2376 | INIT_LIST_HEAD(&sm_info->discard_list); |
2377 | sm_info->nr_discards = 0; | |
2378 | sm_info->max_discards = 0; | |
2379 | ||
bba681cb JK |
2380 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
2381 | ||
184a5cd2 CY |
2382 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
2383 | ||
b270ad6f | 2384 | if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
2385 | err = create_flush_cmd_control(sbi); |
2386 | if (err) | |
a688b9d9 | 2387 | return err; |
6b4afdd7 JK |
2388 | } |
2389 | ||
351df4b2 JK |
2390 | err = build_sit_info(sbi); |
2391 | if (err) | |
2392 | return err; | |
2393 | err = build_free_segmap(sbi); | |
2394 | if (err) | |
2395 | return err; | |
2396 | err = build_curseg(sbi); | |
2397 | if (err) | |
2398 | return err; | |
2399 | ||
2400 | /* reinit free segmap based on SIT */ | |
2401 | build_sit_entries(sbi); | |
2402 | ||
2403 | init_free_segmap(sbi); | |
2404 | err = build_dirty_segmap(sbi); | |
2405 | if (err) | |
2406 | return err; | |
2407 | ||
2408 | init_min_max_mtime(sbi); | |
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
2413 | enum dirty_type dirty_type) | |
2414 | { | |
2415 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2416 | ||
2417 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 2418 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
2419 | dirty_i->nr_dirty[dirty_type] = 0; |
2420 | mutex_unlock(&dirty_i->seglist_lock); | |
2421 | } | |
2422 | ||
5ec4e49f | 2423 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2424 | { |
2425 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 2426 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
2427 | } |
2428 | ||
2429 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
2430 | { | |
2431 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2432 | int i; | |
2433 | ||
2434 | if (!dirty_i) | |
2435 | return; | |
2436 | ||
2437 | /* discard pre-free/dirty segments list */ | |
2438 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
2439 | discard_dirty_segmap(sbi, i); | |
2440 | ||
5ec4e49f | 2441 | destroy_victim_secmap(sbi); |
351df4b2 JK |
2442 | SM_I(sbi)->dirty_info = NULL; |
2443 | kfree(dirty_i); | |
2444 | } | |
2445 | ||
2446 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
2447 | { | |
2448 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
2449 | int i; | |
2450 | ||
2451 | if (!array) | |
2452 | return; | |
2453 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 2454 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
351df4b2 | 2455 | kfree(array[i].sum_blk); |
b7ad7512 CY |
2456 | kfree(array[i].journal); |
2457 | } | |
351df4b2 JK |
2458 | kfree(array); |
2459 | } | |
2460 | ||
2461 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
2462 | { | |
2463 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
2464 | if (!free_i) | |
2465 | return; | |
2466 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
2467 | kvfree(free_i->free_segmap); |
2468 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
2469 | kfree(free_i); |
2470 | } | |
2471 | ||
2472 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
2473 | { | |
2474 | struct sit_info *sit_i = SIT_I(sbi); | |
2475 | unsigned int start; | |
2476 | ||
2477 | if (!sit_i) | |
2478 | return; | |
2479 | ||
2480 | if (sit_i->sentries) { | |
7cd8558b | 2481 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2482 | kfree(sit_i->sentries[start].cur_valid_map); |
2483 | kfree(sit_i->sentries[start].ckpt_valid_map); | |
a66cdd98 | 2484 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
2485 | } |
2486 | } | |
60a3b782 JK |
2487 | kfree(sit_i->tmp_map); |
2488 | ||
39307a8e JK |
2489 | kvfree(sit_i->sentries); |
2490 | kvfree(sit_i->sec_entries); | |
2491 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
2492 | |
2493 | SM_I(sbi)->sit_info = NULL; | |
2494 | kfree(sit_i->sit_bitmap); | |
2495 | kfree(sit_i); | |
2496 | } | |
2497 | ||
2498 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
2499 | { | |
2500 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 2501 | |
3b03f724 CY |
2502 | if (!sm_info) |
2503 | return; | |
2163d198 | 2504 | destroy_flush_cmd_control(sbi); |
351df4b2 JK |
2505 | destroy_dirty_segmap(sbi); |
2506 | destroy_curseg(sbi); | |
2507 | destroy_free_segmap(sbi); | |
2508 | destroy_sit_info(sbi); | |
2509 | sbi->sm_info = NULL; | |
2510 | kfree(sm_info); | |
2511 | } | |
7fd9e544 JK |
2512 | |
2513 | int __init create_segment_manager_caches(void) | |
2514 | { | |
2515 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 2516 | sizeof(struct discard_entry)); |
7fd9e544 | 2517 | if (!discard_entry_slab) |
184a5cd2 CY |
2518 | goto fail; |
2519 | ||
2520 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", | |
c9ee0085 | 2521 | sizeof(struct sit_entry_set)); |
184a5cd2 CY |
2522 | if (!sit_entry_set_slab) |
2523 | goto destory_discard_entry; | |
88b88a66 JK |
2524 | |
2525 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
2526 | sizeof(struct inmem_pages)); | |
2527 | if (!inmem_entry_slab) | |
2528 | goto destroy_sit_entry_set; | |
7fd9e544 | 2529 | return 0; |
184a5cd2 | 2530 | |
88b88a66 JK |
2531 | destroy_sit_entry_set: |
2532 | kmem_cache_destroy(sit_entry_set_slab); | |
184a5cd2 CY |
2533 | destory_discard_entry: |
2534 | kmem_cache_destroy(discard_entry_slab); | |
2535 | fail: | |
2536 | return -ENOMEM; | |
7fd9e544 JK |
2537 | } |
2538 | ||
2539 | void destroy_segment_manager_caches(void) | |
2540 | { | |
184a5cd2 | 2541 | kmem_cache_destroy(sit_entry_set_slab); |
7fd9e544 | 2542 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 2543 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 2544 | } |