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 | ||
edb27dee | 194 | int commit_inmem_pages(struct inode *inode, bool abort) |
88b88a66 JK |
195 | { |
196 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
197 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
198 | struct inmem_pages *cur, *tmp; | |
199 | bool submit_bio = false; | |
200 | struct f2fs_io_info fio = { | |
05ca3632 | 201 | .sbi = sbi, |
88b88a66 | 202 | .type = DATA, |
1e84371f | 203 | .rw = WRITE_SYNC | REQ_PRIO, |
4375a336 | 204 | .encrypted_page = NULL, |
88b88a66 | 205 | }; |
edb27dee | 206 | int err = 0; |
88b88a66 | 207 | |
0341845e JK |
208 | /* |
209 | * The abort is true only when f2fs_evict_inode is called. | |
210 | * Basically, the f2fs_evict_inode doesn't produce any data writes, so | |
211 | * that we don't need to call f2fs_balance_fs. | |
212 | * Otherwise, f2fs_gc in f2fs_balance_fs can wait forever until this | |
213 | * inode becomes free by iget_locked in f2fs_iget. | |
214 | */ | |
70c640b1 | 215 | if (!abort) { |
2c4db1a6 | 216 | f2fs_balance_fs(sbi, true); |
70c640b1 JK |
217 | f2fs_lock_op(sbi); |
218 | } | |
88b88a66 JK |
219 | |
220 | mutex_lock(&fi->inmem_lock); | |
221 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { | |
decd36b6 | 222 | lock_page(cur->page); |
70c640b1 | 223 | if (!abort) { |
70c640b1 | 224 | if (cur->page->mapping == inode->i_mapping) { |
6282adbf | 225 | set_page_dirty(cur->page); |
fec1d657 JK |
226 | f2fs_wait_on_page_writeback(cur->page, DATA, |
227 | true); | |
70c640b1 JK |
228 | if (clear_page_dirty_for_io(cur->page)) |
229 | inode_dec_dirty_pages(inode); | |
8ce67cb0 | 230 | trace_f2fs_commit_inmem_page(cur->page, INMEM); |
05ca3632 | 231 | fio.page = cur->page; |
edb27dee | 232 | err = do_write_data_page(&fio); |
edb27dee JK |
233 | if (err) { |
234 | unlock_page(cur->page); | |
235 | break; | |
236 | } | |
7fee7406 | 237 | clear_cold_data(cur->page); |
2b246fb0 | 238 | submit_bio = true; |
70c640b1 | 239 | } |
70c640b1 | 240 | } else { |
f478f43f | 241 | ClearPageUptodate(cur->page); |
8ce67cb0 | 242 | trace_f2fs_commit_inmem_page(cur->page, INMEM_DROP); |
88b88a66 | 243 | } |
decd36b6 CY |
244 | set_page_private(cur->page, 0); |
245 | ClearPagePrivate(cur->page); | |
246 | f2fs_put_page(cur->page, 1); | |
247 | ||
88b88a66 JK |
248 | list_del(&cur->list); |
249 | kmem_cache_free(inmem_entry_slab, cur); | |
8dcf2ff7 | 250 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 251 | } |
88b88a66 JK |
252 | mutex_unlock(&fi->inmem_lock); |
253 | ||
70c640b1 JK |
254 | if (!abort) { |
255 | f2fs_unlock_op(sbi); | |
256 | if (submit_bio) | |
0c3a5797 CY |
257 | f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, |
258 | DATA, WRITE); | |
70c640b1 | 259 | } |
edb27dee | 260 | return err; |
88b88a66 JK |
261 | } |
262 | ||
0a8165d7 | 263 | /* |
351df4b2 JK |
264 | * This function balances dirty node and dentry pages. |
265 | * In addition, it controls garbage collection. | |
266 | */ | |
2c4db1a6 | 267 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 268 | { |
2c4db1a6 JK |
269 | if (!need) |
270 | return; | |
351df4b2 | 271 | /* |
029cd28c JK |
272 | * We should do GC or end up with checkpoint, if there are so many dirty |
273 | * dir/node pages without enough free segments. | |
351df4b2 | 274 | */ |
43727527 | 275 | if (has_not_enough_free_secs(sbi, 0)) { |
351df4b2 | 276 | mutex_lock(&sbi->gc_mutex); |
d530d4d8 | 277 | f2fs_gc(sbi, false); |
351df4b2 JK |
278 | } |
279 | } | |
280 | ||
4660f9c0 JK |
281 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
282 | { | |
1dcc336b | 283 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
284 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
285 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 286 | |
1b38dc8e JK |
287 | /* check the # of cached NAT entries */ |
288 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
289 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
290 | ||
31696580 CY |
291 | if (!available_free_memory(sbi, FREE_NIDS)) |
292 | try_to_free_nids(sbi, NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES); | |
293 | ||
1b38dc8e JK |
294 | /* checkpoint is the only way to shrink partial cached entries */ |
295 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
60b99b48 | 296 | !available_free_memory(sbi, INO_ENTRIES) || |
7d768d2c CY |
297 | excess_prefree_segs(sbi) || |
298 | excess_dirty_nats(sbi) || | |
d0239e1b | 299 | (is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) { |
36b35a0d CY |
300 | if (test_opt(sbi, DATA_FLUSH)) |
301 | sync_dirty_inodes(sbi, FILE_INODE); | |
4660f9c0 | 302 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 303 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 304 | } |
4660f9c0 JK |
305 | } |
306 | ||
2163d198 | 307 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
308 | { |
309 | struct f2fs_sb_info *sbi = data; | |
a688b9d9 GZ |
310 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
311 | wait_queue_head_t *q = &fcc->flush_wait_queue; | |
6b4afdd7 JK |
312 | repeat: |
313 | if (kthread_should_stop()) | |
314 | return 0; | |
315 | ||
721bd4d5 | 316 | if (!llist_empty(&fcc->issue_list)) { |
740432f8 | 317 | struct bio *bio; |
6b4afdd7 JK |
318 | struct flush_cmd *cmd, *next; |
319 | int ret; | |
320 | ||
740432f8 JK |
321 | bio = f2fs_bio_alloc(0); |
322 | ||
721bd4d5 GZ |
323 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
324 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
325 | ||
6b4afdd7 JK |
326 | bio->bi_bdev = sbi->sb->s_bdev; |
327 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
328 | ||
721bd4d5 GZ |
329 | llist_for_each_entry_safe(cmd, next, |
330 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 331 | cmd->ret = ret; |
6b4afdd7 JK |
332 | complete(&cmd->wait); |
333 | } | |
a4ed23f2 | 334 | bio_put(bio); |
a688b9d9 | 335 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
336 | } |
337 | ||
a688b9d9 | 338 | wait_event_interruptible(*q, |
721bd4d5 | 339 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
340 | goto repeat; |
341 | } | |
342 | ||
343 | int f2fs_issue_flush(struct f2fs_sb_info *sbi) | |
344 | { | |
a688b9d9 | 345 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
adf8d90b | 346 | struct flush_cmd cmd; |
6b4afdd7 | 347 | |
24a9ee0f JK |
348 | trace_f2fs_issue_flush(sbi->sb, test_opt(sbi, NOBARRIER), |
349 | test_opt(sbi, FLUSH_MERGE)); | |
350 | ||
0f7b2abd JK |
351 | if (test_opt(sbi, NOBARRIER)) |
352 | return 0; | |
353 | ||
740432f8 JK |
354 | if (!test_opt(sbi, FLUSH_MERGE)) { |
355 | struct bio *bio = f2fs_bio_alloc(0); | |
356 | int ret; | |
357 | ||
358 | bio->bi_bdev = sbi->sb->s_bdev; | |
359 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
360 | bio_put(bio); | |
361 | return ret; | |
362 | } | |
6b4afdd7 | 363 | |
adf8d90b | 364 | init_completion(&cmd.wait); |
6b4afdd7 | 365 | |
721bd4d5 | 366 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 367 | |
a688b9d9 GZ |
368 | if (!fcc->dispatch_list) |
369 | wake_up(&fcc->flush_wait_queue); | |
6b4afdd7 | 370 | |
adf8d90b CY |
371 | wait_for_completion(&cmd.wait); |
372 | ||
373 | return cmd.ret; | |
6b4afdd7 JK |
374 | } |
375 | ||
2163d198 GZ |
376 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
377 | { | |
378 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
379 | struct flush_cmd_control *fcc; | |
380 | int err = 0; | |
381 | ||
382 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); | |
383 | if (!fcc) | |
384 | return -ENOMEM; | |
2163d198 | 385 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 386 | init_llist_head(&fcc->issue_list); |
6b2920a5 | 387 | SM_I(sbi)->cmd_control_info = fcc; |
2163d198 GZ |
388 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
389 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
390 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
391 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
392 | kfree(fcc); | |
6b2920a5 | 393 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
394 | return err; |
395 | } | |
2163d198 GZ |
396 | |
397 | return err; | |
398 | } | |
399 | ||
400 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi) | |
401 | { | |
6b2920a5 | 402 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
2163d198 GZ |
403 | |
404 | if (fcc && fcc->f2fs_issue_flush) | |
405 | kthread_stop(fcc->f2fs_issue_flush); | |
406 | kfree(fcc); | |
6b2920a5 | 407 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
408 | } |
409 | ||
351df4b2 JK |
410 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
411 | enum dirty_type dirty_type) | |
412 | { | |
413 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
414 | ||
415 | /* need not be added */ | |
416 | if (IS_CURSEG(sbi, segno)) | |
417 | return; | |
418 | ||
419 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
420 | dirty_i->nr_dirty[dirty_type]++; | |
421 | ||
422 | if (dirty_type == DIRTY) { | |
423 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 424 | enum dirty_type t = sentry->type; |
b2f2c390 | 425 | |
ec325b52 JK |
426 | if (unlikely(t >= DIRTY)) { |
427 | f2fs_bug_on(sbi, 1); | |
428 | return; | |
429 | } | |
4625d6aa CL |
430 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
431 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
432 | } |
433 | } | |
434 | ||
435 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
436 | enum dirty_type dirty_type) | |
437 | { | |
438 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
439 | ||
440 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
441 | dirty_i->nr_dirty[dirty_type]--; | |
442 | ||
443 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
444 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
445 | enum dirty_type t = sentry->type; | |
446 | ||
447 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
448 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 449 | |
5ec4e49f JK |
450 | if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) |
451 | clear_bit(GET_SECNO(sbi, segno), | |
452 | dirty_i->victim_secmap); | |
351df4b2 JK |
453 | } |
454 | } | |
455 | ||
0a8165d7 | 456 | /* |
351df4b2 JK |
457 | * Should not occur error such as -ENOMEM. |
458 | * Adding dirty entry into seglist is not critical operation. | |
459 | * If a given segment is one of current working segments, it won't be added. | |
460 | */ | |
8d8451af | 461 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
462 | { |
463 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
464 | unsigned short valid_blocks; | |
465 | ||
466 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
467 | return; | |
468 | ||
469 | mutex_lock(&dirty_i->seglist_lock); | |
470 | ||
471 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
472 | ||
473 | if (valid_blocks == 0) { | |
474 | __locate_dirty_segment(sbi, segno, PRE); | |
475 | __remove_dirty_segment(sbi, segno, DIRTY); | |
476 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
477 | __locate_dirty_segment(sbi, segno, DIRTY); | |
478 | } else { | |
479 | /* Recovery routine with SSR needs this */ | |
480 | __remove_dirty_segment(sbi, segno, DIRTY); | |
481 | } | |
482 | ||
483 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
484 | } |
485 | ||
1e87a78d | 486 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
487 | block_t blkstart, block_t blklen) |
488 | { | |
55cf9cb6 CY |
489 | sector_t start = SECTOR_FROM_BLOCK(blkstart); |
490 | sector_t len = SECTOR_FROM_BLOCK(blklen); | |
a66cdd98 JK |
491 | struct seg_entry *se; |
492 | unsigned int offset; | |
493 | block_t i; | |
494 | ||
495 | for (i = blkstart; i < blkstart + blklen; i++) { | |
496 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); | |
497 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
498 | ||
499 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
500 | sbi->discard_blks--; | |
501 | } | |
1661d07c | 502 | trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); |
1e87a78d JK |
503 | return blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0); |
504 | } | |
505 | ||
e90c2d28 | 506 | bool discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr) |
1e87a78d | 507 | { |
60b286c4 | 508 | int err = -EOPNOTSUPP; |
40a02be1 JK |
509 | |
510 | if (test_opt(sbi, DISCARD)) { | |
511 | struct seg_entry *se = get_seg_entry(sbi, | |
512 | GET_SEGNO(sbi, blkaddr)); | |
513 | unsigned int offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
514 | ||
515 | if (f2fs_test_bit(offset, se->discard_map)) | |
e90c2d28 | 516 | return false; |
40a02be1 JK |
517 | |
518 | err = f2fs_issue_discard(sbi, blkaddr, 1); | |
519 | } | |
520 | ||
e90c2d28 | 521 | if (err) { |
381722d2 | 522 | update_meta_page(sbi, NULL, blkaddr); |
e90c2d28 CY |
523 | return true; |
524 | } | |
525 | return false; | |
37208879 JK |
526 | } |
527 | ||
adf4983b | 528 | static void __add_discard_entry(struct f2fs_sb_info *sbi, |
a66cdd98 JK |
529 | struct cp_control *cpc, struct seg_entry *se, |
530 | unsigned int start, unsigned int end) | |
b2955550 JK |
531 | { |
532 | struct list_head *head = &SM_I(sbi)->discard_list; | |
adf4983b JK |
533 | struct discard_entry *new, *last; |
534 | ||
535 | if (!list_empty(head)) { | |
536 | last = list_last_entry(head, struct discard_entry, list); | |
537 | if (START_BLOCK(sbi, cpc->trim_start) + start == | |
538 | last->blkaddr + last->len) { | |
539 | last->len += end - start; | |
540 | goto done; | |
541 | } | |
542 | } | |
543 | ||
544 | new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); | |
545 | INIT_LIST_HEAD(&new->list); | |
546 | new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; | |
547 | new->len = end - start; | |
548 | list_add_tail(&new->list, head); | |
549 | done: | |
550 | SM_I(sbi)->nr_discards += end - start; | |
adf4983b JK |
551 | } |
552 | ||
553 | static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) | |
554 | { | |
b2955550 JK |
555 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
556 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 557 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
558 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
559 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 560 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 561 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 562 | unsigned int start = 0, end = -1; |
4b2fecc8 | 563 | bool force = (cpc->reason == CP_DISCARD); |
b2955550 JK |
564 | int i; |
565 | ||
a66cdd98 | 566 | if (se->valid_blocks == max_blocks) |
b2955550 JK |
567 | return; |
568 | ||
a66cdd98 JK |
569 | if (!force) { |
570 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
912a83b5 DC |
571 | SM_I(sbi)->nr_discards >= SM_I(sbi)->max_discards) |
572 | return; | |
4b2fecc8 JK |
573 | } |
574 | ||
b2955550 JK |
575 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
576 | for (i = 0; i < entries; i++) | |
a66cdd98 | 577 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 578 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 579 | |
4b2fecc8 | 580 | while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { |
b2955550 JK |
581 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
582 | if (start >= max_blocks) | |
583 | break; | |
584 | ||
585 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
a66cdd98 | 586 | __add_discard_entry(sbi, cpc, se, start, end); |
b2955550 JK |
587 | } |
588 | } | |
589 | ||
4b2fecc8 JK |
590 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
591 | { | |
592 | struct list_head *head = &(SM_I(sbi)->discard_list); | |
593 | struct discard_entry *entry, *this; | |
594 | ||
595 | /* drop caches */ | |
596 | list_for_each_entry_safe(entry, this, head, list) { | |
597 | list_del(&entry->list); | |
598 | kmem_cache_free(discard_entry_slab, entry); | |
599 | } | |
600 | } | |
601 | ||
0a8165d7 | 602 | /* |
351df4b2 JK |
603 | * Should call clear_prefree_segments after checkpoint is done. |
604 | */ | |
605 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
606 | { | |
607 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 608 | unsigned int segno; |
351df4b2 JK |
609 | |
610 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 611 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 612 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
613 | mutex_unlock(&dirty_i->seglist_lock); |
614 | } | |
615 | ||
836b5a63 | 616 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 617 | { |
b2955550 | 618 | struct list_head *head = &(SM_I(sbi)->discard_list); |
2d7b822a | 619 | struct discard_entry *entry, *this; |
351df4b2 | 620 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 621 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 622 | unsigned int start = 0, end = -1; |
351df4b2 JK |
623 | |
624 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 625 | |
351df4b2 | 626 | while (1) { |
29e59c14 | 627 | int i; |
7cd8558b JK |
628 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
629 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 630 | break; |
7cd8558b JK |
631 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
632 | start + 1); | |
29e59c14 CL |
633 | |
634 | for (i = start; i < end; i++) | |
635 | clear_bit(i, prefree_map); | |
636 | ||
637 | dirty_i->nr_dirty[PRE] -= end - start; | |
638 | ||
639 | if (!test_opt(sbi, DISCARD)) | |
640 | continue; | |
351df4b2 | 641 | |
37208879 JK |
642 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
643 | (end - start) << sbi->log_blocks_per_seg); | |
351df4b2 JK |
644 | } |
645 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
646 | |
647 | /* send small discards */ | |
2d7b822a | 648 | list_for_each_entry_safe(entry, this, head, list) { |
836b5a63 JK |
649 | if (cpc->reason == CP_DISCARD && entry->len < cpc->trim_minlen) |
650 | goto skip; | |
37208879 | 651 | f2fs_issue_discard(sbi, entry->blkaddr, entry->len); |
f56aa1c5 | 652 | cpc->trimmed += entry->len; |
836b5a63 | 653 | skip: |
b2955550 JK |
654 | list_del(&entry->list); |
655 | SM_I(sbi)->nr_discards -= entry->len; | |
656 | kmem_cache_free(discard_entry_slab, entry); | |
657 | } | |
351df4b2 JK |
658 | } |
659 | ||
184a5cd2 | 660 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
661 | { |
662 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
663 | |
664 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 665 | sit_i->dirty_sentries++; |
184a5cd2 CY |
666 | return false; |
667 | } | |
668 | ||
669 | return true; | |
351df4b2 JK |
670 | } |
671 | ||
672 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
673 | unsigned int segno, int modified) | |
674 | { | |
675 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
676 | se->type = type; | |
677 | if (modified) | |
678 | __mark_sit_entry_dirty(sbi, segno); | |
679 | } | |
680 | ||
681 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
682 | { | |
683 | struct seg_entry *se; | |
684 | unsigned int segno, offset; | |
685 | long int new_vblocks; | |
686 | ||
687 | segno = GET_SEGNO(sbi, blkaddr); | |
688 | ||
689 | se = get_seg_entry(sbi, segno); | |
690 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 691 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 692 | |
9850cf4a | 693 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
694 | (new_vblocks > sbi->blocks_per_seg))); |
695 | ||
696 | se->valid_blocks = new_vblocks; | |
697 | se->mtime = get_mtime(sbi); | |
698 | SIT_I(sbi)->max_mtime = se->mtime; | |
699 | ||
700 | /* Update valid block bitmap */ | |
701 | if (del > 0) { | |
52aca074 | 702 | if (f2fs_test_and_set_bit(offset, se->cur_valid_map)) |
05796763 | 703 | f2fs_bug_on(sbi, 1); |
a66cdd98 JK |
704 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
705 | sbi->discard_blks--; | |
351df4b2 | 706 | } else { |
52aca074 | 707 | if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) |
05796763 | 708 | f2fs_bug_on(sbi, 1); |
a66cdd98 JK |
709 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
710 | sbi->discard_blks++; | |
351df4b2 JK |
711 | } |
712 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
713 | se->ckpt_valid_blocks += del; | |
714 | ||
715 | __mark_sit_entry_dirty(sbi, segno); | |
716 | ||
717 | /* update total number of valid blocks to be written in ckpt area */ | |
718 | SIT_I(sbi)->written_valid_blocks += del; | |
719 | ||
720 | if (sbi->segs_per_sec > 1) | |
721 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
722 | } | |
723 | ||
5e443818 | 724 | void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) |
351df4b2 | 725 | { |
5e443818 JK |
726 | update_sit_entry(sbi, new, 1); |
727 | if (GET_SEGNO(sbi, old) != NULL_SEGNO) | |
728 | update_sit_entry(sbi, old, -1); | |
729 | ||
730 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); | |
731 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); | |
351df4b2 JK |
732 | } |
733 | ||
734 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) | |
735 | { | |
736 | unsigned int segno = GET_SEGNO(sbi, addr); | |
737 | struct sit_info *sit_i = SIT_I(sbi); | |
738 | ||
9850cf4a | 739 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
740 | if (addr == NEW_ADDR) |
741 | return; | |
742 | ||
743 | /* add it into sit main buffer */ | |
744 | mutex_lock(&sit_i->sentry_lock); | |
745 | ||
746 | update_sit_entry(sbi, addr, -1); | |
747 | ||
748 | /* add it into dirty seglist */ | |
749 | locate_dirty_segment(sbi, segno); | |
750 | ||
751 | mutex_unlock(&sit_i->sentry_lock); | |
752 | } | |
753 | ||
6e2c64ad JK |
754 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
755 | { | |
756 | struct sit_info *sit_i = SIT_I(sbi); | |
757 | unsigned int segno, offset; | |
758 | struct seg_entry *se; | |
759 | bool is_cp = false; | |
760 | ||
761 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) | |
762 | return true; | |
763 | ||
764 | mutex_lock(&sit_i->sentry_lock); | |
765 | ||
766 | segno = GET_SEGNO(sbi, blkaddr); | |
767 | se = get_seg_entry(sbi, segno); | |
768 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
769 | ||
770 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
771 | is_cp = true; | |
772 | ||
773 | mutex_unlock(&sit_i->sentry_lock); | |
774 | ||
775 | return is_cp; | |
776 | } | |
777 | ||
0a8165d7 | 778 | /* |
351df4b2 JK |
779 | * This function should be resided under the curseg_mutex lock |
780 | */ | |
781 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 782 | struct f2fs_summary *sum) |
351df4b2 JK |
783 | { |
784 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
785 | void *addr = curseg->sum_blk; | |
e79efe3b | 786 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 787 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
788 | } |
789 | ||
0a8165d7 | 790 | /* |
351df4b2 JK |
791 | * Calculate the number of current summary pages for writing |
792 | */ | |
3fa06d7b | 793 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 794 | { |
351df4b2 | 795 | int valid_sum_count = 0; |
9a47938b | 796 | int i, sum_in_page; |
351df4b2 JK |
797 | |
798 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
799 | if (sbi->ckpt->alloc_type[i] == SSR) | |
800 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
801 | else { |
802 | if (for_ra) | |
803 | valid_sum_count += le16_to_cpu( | |
804 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
805 | else | |
806 | valid_sum_count += curseg_blkoff(sbi, i); | |
807 | } | |
351df4b2 JK |
808 | } |
809 | ||
9a47938b FL |
810 | sum_in_page = (PAGE_CACHE_SIZE - 2 * SUM_JOURNAL_SIZE - |
811 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; | |
812 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 813 | return 1; |
9a47938b FL |
814 | else if ((valid_sum_count - sum_in_page) <= |
815 | (PAGE_CACHE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) | |
351df4b2 JK |
816 | return 2; |
817 | return 3; | |
818 | } | |
819 | ||
0a8165d7 | 820 | /* |
351df4b2 JK |
821 | * Caller should put this summary page |
822 | */ | |
823 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
824 | { | |
825 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
826 | } | |
827 | ||
381722d2 | 828 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
829 | { |
830 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 CY |
831 | void *dst = page_address(page); |
832 | ||
833 | if (src) | |
834 | memcpy(dst, src, PAGE_CACHE_SIZE); | |
835 | else | |
836 | memset(dst, 0, PAGE_CACHE_SIZE); | |
351df4b2 JK |
837 | set_page_dirty(page); |
838 | f2fs_put_page(page, 1); | |
839 | } | |
840 | ||
381722d2 CY |
841 | static void write_sum_page(struct f2fs_sb_info *sbi, |
842 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
843 | { | |
844 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
845 | } | |
846 | ||
60374688 JK |
847 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
848 | { | |
849 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
81fb5e87 | 850 | unsigned int segno = curseg->segno + 1; |
60374688 JK |
851 | struct free_segmap_info *free_i = FREE_I(sbi); |
852 | ||
7cd8558b | 853 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) |
81fb5e87 | 854 | return !test_bit(segno, free_i->free_segmap); |
60374688 JK |
855 | return 0; |
856 | } | |
857 | ||
0a8165d7 | 858 | /* |
351df4b2 JK |
859 | * Find a new segment from the free segments bitmap to right order |
860 | * This function should be returned with success, otherwise BUG | |
861 | */ | |
862 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
863 | unsigned int *newseg, bool new_sec, int dir) | |
864 | { | |
865 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 866 | unsigned int segno, secno, zoneno; |
7cd8558b | 867 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
351df4b2 JK |
868 | unsigned int hint = *newseg / sbi->segs_per_sec; |
869 | unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); | |
870 | unsigned int left_start = hint; | |
871 | bool init = true; | |
872 | int go_left = 0; | |
873 | int i; | |
874 | ||
1a118ccf | 875 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
876 | |
877 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
878 | segno = find_next_zero_bit(free_i->free_segmap, | |
0ab14356 CY |
879 | (hint + 1) * sbi->segs_per_sec, *newseg + 1); |
880 | if (segno < (hint + 1) * sbi->segs_per_sec) | |
351df4b2 JK |
881 | goto got_it; |
882 | } | |
883 | find_other_zone: | |
7cd8558b JK |
884 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
885 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
886 | if (dir == ALLOC_RIGHT) { |
887 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
888 | MAIN_SECS(sbi), 0); |
889 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
890 | } else { |
891 | go_left = 1; | |
892 | left_start = hint - 1; | |
893 | } | |
894 | } | |
895 | if (go_left == 0) | |
896 | goto skip_left; | |
897 | ||
898 | while (test_bit(left_start, free_i->free_secmap)) { | |
899 | if (left_start > 0) { | |
900 | left_start--; | |
901 | continue; | |
902 | } | |
903 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
904 | MAIN_SECS(sbi), 0); |
905 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
906 | break; |
907 | } | |
908 | secno = left_start; | |
909 | skip_left: | |
910 | hint = secno; | |
911 | segno = secno * sbi->segs_per_sec; | |
912 | zoneno = secno / sbi->secs_per_zone; | |
913 | ||
914 | /* give up on finding another zone */ | |
915 | if (!init) | |
916 | goto got_it; | |
917 | if (sbi->secs_per_zone == 1) | |
918 | goto got_it; | |
919 | if (zoneno == old_zoneno) | |
920 | goto got_it; | |
921 | if (dir == ALLOC_LEFT) { | |
922 | if (!go_left && zoneno + 1 >= total_zones) | |
923 | goto got_it; | |
924 | if (go_left && zoneno == 0) | |
925 | goto got_it; | |
926 | } | |
927 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
928 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
929 | break; | |
930 | ||
931 | if (i < NR_CURSEG_TYPE) { | |
932 | /* zone is in user, try another */ | |
933 | if (go_left) | |
934 | hint = zoneno * sbi->secs_per_zone - 1; | |
935 | else if (zoneno + 1 >= total_zones) | |
936 | hint = 0; | |
937 | else | |
938 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
939 | init = false; | |
940 | goto find_other_zone; | |
941 | } | |
942 | got_it: | |
943 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 944 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
945 | __set_inuse(sbi, segno); |
946 | *newseg = segno; | |
1a118ccf | 947 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
948 | } |
949 | ||
950 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
951 | { | |
952 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
953 | struct summary_footer *sum_footer; | |
954 | ||
955 | curseg->segno = curseg->next_segno; | |
956 | curseg->zone = GET_ZONENO_FROM_SEGNO(sbi, curseg->segno); | |
957 | curseg->next_blkoff = 0; | |
958 | curseg->next_segno = NULL_SEGNO; | |
959 | ||
960 | sum_footer = &(curseg->sum_blk->footer); | |
961 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
962 | if (IS_DATASEG(type)) | |
963 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
964 | if (IS_NODESEG(type)) | |
965 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
966 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
967 | } | |
968 | ||
0a8165d7 | 969 | /* |
351df4b2 JK |
970 | * Allocate a current working segment. |
971 | * This function always allocates a free segment in LFS manner. | |
972 | */ | |
973 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
974 | { | |
975 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
976 | unsigned int segno = curseg->segno; | |
977 | int dir = ALLOC_LEFT; | |
978 | ||
979 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 980 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
981 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
982 | dir = ALLOC_RIGHT; | |
983 | ||
984 | if (test_opt(sbi, NOHEAP)) | |
985 | dir = ALLOC_RIGHT; | |
986 | ||
987 | get_new_segment(sbi, &segno, new_sec, dir); | |
988 | curseg->next_segno = segno; | |
989 | reset_curseg(sbi, type, 1); | |
990 | curseg->alloc_type = LFS; | |
991 | } | |
992 | ||
993 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
994 | struct curseg_info *seg, block_t start) | |
995 | { | |
996 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 997 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 998 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
999 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
1000 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
1001 | int i, pos; | |
1002 | ||
1003 | for (i = 0; i < entries; i++) | |
1004 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
1005 | ||
1006 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
1007 | ||
1008 | seg->next_blkoff = pos; | |
351df4b2 JK |
1009 | } |
1010 | ||
0a8165d7 | 1011 | /* |
351df4b2 JK |
1012 | * If a segment is written by LFS manner, next block offset is just obtained |
1013 | * by increasing the current block offset. However, if a segment is written by | |
1014 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
1015 | */ | |
1016 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
1017 | struct curseg_info *seg) | |
1018 | { | |
1019 | if (seg->alloc_type == SSR) | |
1020 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
1021 | else | |
1022 | seg->next_blkoff++; | |
1023 | } | |
1024 | ||
0a8165d7 | 1025 | /* |
e1c42045 | 1026 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
1027 | * manner, so it should recover the existing segment information of valid blocks |
1028 | */ | |
1029 | static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) | |
1030 | { | |
1031 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
1032 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1033 | unsigned int new_segno = curseg->next_segno; | |
1034 | struct f2fs_summary_block *sum_node; | |
1035 | struct page *sum_page; | |
1036 | ||
1037 | write_sum_page(sbi, curseg->sum_blk, | |
1038 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
1039 | __set_test_and_inuse(sbi, new_segno); | |
1040 | ||
1041 | mutex_lock(&dirty_i->seglist_lock); | |
1042 | __remove_dirty_segment(sbi, new_segno, PRE); | |
1043 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
1044 | mutex_unlock(&dirty_i->seglist_lock); | |
1045 | ||
1046 | reset_curseg(sbi, type, 1); | |
1047 | curseg->alloc_type = SSR; | |
1048 | __next_free_blkoff(sbi, curseg, 0); | |
1049 | ||
1050 | if (reuse) { | |
1051 | sum_page = get_sum_page(sbi, new_segno); | |
1052 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
1053 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
1054 | f2fs_put_page(sum_page, 1); | |
1055 | } | |
1056 | } | |
1057 | ||
43727527 JK |
1058 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
1059 | { | |
1060 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1061 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
1062 | ||
1063 | if (IS_NODESEG(type) || !has_not_enough_free_secs(sbi, 0)) | |
1064 | return v_ops->get_victim(sbi, | |
1065 | &(curseg)->next_segno, BG_GC, type, SSR); | |
1066 | ||
1067 | /* For data segments, let's do SSR more intensively */ | |
1068 | for (; type >= CURSEG_HOT_DATA; type--) | |
1069 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, | |
1070 | BG_GC, type, SSR)) | |
1071 | return 1; | |
1072 | return 0; | |
1073 | } | |
1074 | ||
351df4b2 JK |
1075 | /* |
1076 | * flush out current segment and replace it with new segment | |
1077 | * This function should be returned with success, otherwise BUG | |
1078 | */ | |
1079 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
1080 | int type, bool force) | |
1081 | { | |
1082 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
351df4b2 | 1083 | |
7b405275 | 1084 | if (force) |
351df4b2 | 1085 | new_curseg(sbi, type, true); |
7b405275 | 1086 | else if (type == CURSEG_WARM_NODE) |
351df4b2 | 1087 | new_curseg(sbi, type, false); |
60374688 JK |
1088 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
1089 | new_curseg(sbi, type, false); | |
351df4b2 JK |
1090 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
1091 | change_curseg(sbi, type, true); | |
1092 | else | |
1093 | new_curseg(sbi, type, false); | |
dcdfff65 JK |
1094 | |
1095 | stat_inc_seg_type(sbi, curseg); | |
351df4b2 JK |
1096 | } |
1097 | ||
38aa0889 JK |
1098 | static void __allocate_new_segments(struct f2fs_sb_info *sbi, int type) |
1099 | { | |
1100 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1101 | unsigned int old_segno; | |
1102 | ||
1103 | old_segno = curseg->segno; | |
1104 | SIT_I(sbi)->s_ops->allocate_segment(sbi, type, true); | |
1105 | locate_dirty_segment(sbi, old_segno); | |
1106 | } | |
1107 | ||
351df4b2 JK |
1108 | void allocate_new_segments(struct f2fs_sb_info *sbi) |
1109 | { | |
351df4b2 JK |
1110 | int i; |
1111 | ||
38aa0889 JK |
1112 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) |
1113 | __allocate_new_segments(sbi, i); | |
351df4b2 JK |
1114 | } |
1115 | ||
1116 | static const struct segment_allocation default_salloc_ops = { | |
1117 | .allocate_segment = allocate_segment_by_default, | |
1118 | }; | |
1119 | ||
4b2fecc8 JK |
1120 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
1121 | { | |
f7ef9b83 JK |
1122 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
1123 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
4b2fecc8 JK |
1124 | unsigned int start_segno, end_segno; |
1125 | struct cp_control cpc; | |
c34f42e2 | 1126 | int err = 0; |
4b2fecc8 | 1127 | |
836b5a63 | 1128 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
1129 | return -EINVAL; |
1130 | ||
9bd27ae4 | 1131 | cpc.trimmed = 0; |
7cd8558b | 1132 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
1133 | goto out; |
1134 | ||
1135 | /* start/end segment number in main_area */ | |
7cd8558b JK |
1136 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
1137 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
1138 | GET_SEGNO(sbi, end); | |
4b2fecc8 | 1139 | cpc.reason = CP_DISCARD; |
836b5a63 | 1140 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
1141 | |
1142 | /* do checkpoint to issue discard commands safely */ | |
bba681cb JK |
1143 | for (; start_segno <= end_segno; start_segno = cpc.trim_end + 1) { |
1144 | cpc.trim_start = start_segno; | |
a66cdd98 JK |
1145 | |
1146 | if (sbi->discard_blks == 0) | |
1147 | break; | |
1148 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
1149 | cpc.trim_end = end_segno; | |
1150 | else | |
1151 | cpc.trim_end = min_t(unsigned int, | |
1152 | rounddown(start_segno + | |
bba681cb JK |
1153 | BATCHED_TRIM_SEGMENTS(sbi), |
1154 | sbi->segs_per_sec) - 1, end_segno); | |
1155 | ||
1156 | mutex_lock(&sbi->gc_mutex); | |
c34f42e2 | 1157 | err = write_checkpoint(sbi, &cpc); |
bba681cb JK |
1158 | mutex_unlock(&sbi->gc_mutex); |
1159 | } | |
4b2fecc8 | 1160 | out: |
f7ef9b83 | 1161 | range->len = F2FS_BLK_TO_BYTES(cpc.trimmed); |
c34f42e2 | 1162 | return err; |
4b2fecc8 JK |
1163 | } |
1164 | ||
351df4b2 JK |
1165 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
1166 | { | |
1167 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1168 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
1169 | return true; | |
1170 | return false; | |
1171 | } | |
1172 | ||
1173 | static int __get_segment_type_2(struct page *page, enum page_type p_type) | |
1174 | { | |
1175 | if (p_type == DATA) | |
1176 | return CURSEG_HOT_DATA; | |
1177 | else | |
1178 | return CURSEG_HOT_NODE; | |
1179 | } | |
1180 | ||
1181 | static int __get_segment_type_4(struct page *page, enum page_type p_type) | |
1182 | { | |
1183 | if (p_type == DATA) { | |
1184 | struct inode *inode = page->mapping->host; | |
1185 | ||
1186 | if (S_ISDIR(inode->i_mode)) | |
1187 | return CURSEG_HOT_DATA; | |
1188 | else | |
1189 | return CURSEG_COLD_DATA; | |
1190 | } else { | |
a344b9fd JK |
1191 | if (IS_DNODE(page) && is_cold_node(page)) |
1192 | return CURSEG_WARM_NODE; | |
351df4b2 JK |
1193 | else |
1194 | return CURSEG_COLD_NODE; | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | static int __get_segment_type_6(struct page *page, enum page_type p_type) | |
1199 | { | |
1200 | if (p_type == DATA) { | |
1201 | struct inode *inode = page->mapping->host; | |
1202 | ||
1203 | if (S_ISDIR(inode->i_mode)) | |
1204 | return CURSEG_HOT_DATA; | |
354a3399 | 1205 | else if (is_cold_data(page) || file_is_cold(inode)) |
351df4b2 JK |
1206 | return CURSEG_COLD_DATA; |
1207 | else | |
1208 | return CURSEG_WARM_DATA; | |
1209 | } else { | |
1210 | if (IS_DNODE(page)) | |
1211 | return is_cold_node(page) ? CURSEG_WARM_NODE : | |
1212 | CURSEG_HOT_NODE; | |
1213 | else | |
1214 | return CURSEG_COLD_NODE; | |
1215 | } | |
1216 | } | |
1217 | ||
1218 | static int __get_segment_type(struct page *page, enum page_type p_type) | |
1219 | { | |
4081363f | 1220 | switch (F2FS_P_SB(page)->active_logs) { |
351df4b2 JK |
1221 | case 2: |
1222 | return __get_segment_type_2(page, p_type); | |
1223 | case 4: | |
1224 | return __get_segment_type_4(page, p_type); | |
351df4b2 | 1225 | } |
12a67146 | 1226 | /* NR_CURSEG_TYPE(6) logs by default */ |
9850cf4a JK |
1227 | f2fs_bug_on(F2FS_P_SB(page), |
1228 | F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); | |
12a67146 | 1229 | return __get_segment_type_6(page, p_type); |
351df4b2 JK |
1230 | } |
1231 | ||
bfad7c2d JK |
1232 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
1233 | block_t old_blkaddr, block_t *new_blkaddr, | |
1234 | struct f2fs_summary *sum, int type) | |
351df4b2 JK |
1235 | { |
1236 | struct sit_info *sit_i = SIT_I(sbi); | |
1237 | struct curseg_info *curseg; | |
38aa0889 JK |
1238 | bool direct_io = (type == CURSEG_DIRECT_IO); |
1239 | ||
1240 | type = direct_io ? CURSEG_WARM_DATA : type; | |
351df4b2 | 1241 | |
351df4b2 JK |
1242 | curseg = CURSEG_I(sbi, type); |
1243 | ||
1244 | mutex_lock(&curseg->curseg_mutex); | |
21cb1d99 | 1245 | mutex_lock(&sit_i->sentry_lock); |
351df4b2 | 1246 | |
38aa0889 | 1247 | /* direct_io'ed data is aligned to the segment for better performance */ |
47e70ca4 JK |
1248 | if (direct_io && curseg->next_blkoff && |
1249 | !has_not_enough_free_secs(sbi, 0)) | |
38aa0889 JK |
1250 | __allocate_new_segments(sbi, type); |
1251 | ||
351df4b2 | 1252 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); |
351df4b2 JK |
1253 | |
1254 | /* | |
1255 | * __add_sum_entry should be resided under the curseg_mutex | |
1256 | * because, this function updates a summary entry in the | |
1257 | * current summary block. | |
1258 | */ | |
e79efe3b | 1259 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1260 | |
351df4b2 | 1261 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
1262 | |
1263 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 1264 | |
5e443818 JK |
1265 | if (!__has_curseg_space(sbi, type)) |
1266 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
351df4b2 JK |
1267 | /* |
1268 | * SIT information should be updated before segment allocation, | |
1269 | * since SSR needs latest valid block information. | |
1270 | */ | |
1271 | refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); | |
5e443818 | 1272 | |
351df4b2 JK |
1273 | mutex_unlock(&sit_i->sentry_lock); |
1274 | ||
bfad7c2d | 1275 | if (page && IS_NODESEG(type)) |
351df4b2 JK |
1276 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
1277 | ||
bfad7c2d JK |
1278 | mutex_unlock(&curseg->curseg_mutex); |
1279 | } | |
1280 | ||
05ca3632 | 1281 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 1282 | { |
05ca3632 | 1283 | int type = __get_segment_type(fio->page, fio->type); |
bfad7c2d | 1284 | |
05ca3632 JK |
1285 | allocate_data_block(fio->sbi, fio->page, fio->blk_addr, |
1286 | &fio->blk_addr, sum, type); | |
bfad7c2d | 1287 | |
351df4b2 | 1288 | /* writeout dirty page into bdev */ |
05ca3632 | 1289 | f2fs_submit_page_mbio(fio); |
351df4b2 JK |
1290 | } |
1291 | ||
577e3495 | 1292 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) |
351df4b2 | 1293 | { |
458e6197 | 1294 | struct f2fs_io_info fio = { |
05ca3632 | 1295 | .sbi = sbi, |
458e6197 | 1296 | .type = META, |
cf04e8eb JK |
1297 | .rw = WRITE_SYNC | REQ_META | REQ_PRIO, |
1298 | .blk_addr = page->index, | |
05ca3632 | 1299 | .page = page, |
4375a336 | 1300 | .encrypted_page = NULL, |
458e6197 JK |
1301 | }; |
1302 | ||
2b947003 CY |
1303 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
1304 | fio.rw &= ~REQ_META; | |
1305 | ||
351df4b2 | 1306 | set_page_writeback(page); |
05ca3632 | 1307 | f2fs_submit_page_mbio(&fio); |
351df4b2 JK |
1308 | } |
1309 | ||
05ca3632 | 1310 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
1311 | { |
1312 | struct f2fs_summary sum; | |
05ca3632 | 1313 | |
351df4b2 | 1314 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 1315 | do_write_page(&sum, fio); |
351df4b2 JK |
1316 | } |
1317 | ||
05ca3632 | 1318 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 1319 | { |
05ca3632 | 1320 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
1321 | struct f2fs_summary sum; |
1322 | struct node_info ni; | |
1323 | ||
9850cf4a | 1324 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
1325 | get_node_info(sbi, dn->nid, &ni); |
1326 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 1327 | do_write_page(&sum, fio); |
e1509cf2 | 1328 | dn->data_blkaddr = fio->blk_addr; |
351df4b2 JK |
1329 | } |
1330 | ||
05ca3632 | 1331 | void rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 1332 | { |
05ca3632 JK |
1333 | stat_inc_inplace_blocks(fio->sbi); |
1334 | f2fs_submit_page_mbio(fio); | |
351df4b2 JK |
1335 | } |
1336 | ||
528e3459 CY |
1337 | static void __f2fs_replace_block(struct f2fs_sb_info *sbi, |
1338 | struct f2fs_summary *sum, | |
19f106bc CY |
1339 | block_t old_blkaddr, block_t new_blkaddr, |
1340 | bool recover_curseg) | |
351df4b2 JK |
1341 | { |
1342 | struct sit_info *sit_i = SIT_I(sbi); | |
1343 | struct curseg_info *curseg; | |
1344 | unsigned int segno, old_cursegno; | |
1345 | struct seg_entry *se; | |
1346 | int type; | |
19f106bc | 1347 | unsigned short old_blkoff; |
351df4b2 JK |
1348 | |
1349 | segno = GET_SEGNO(sbi, new_blkaddr); | |
1350 | se = get_seg_entry(sbi, segno); | |
1351 | type = se->type; | |
1352 | ||
19f106bc CY |
1353 | if (!recover_curseg) { |
1354 | /* for recovery flow */ | |
1355 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
1356 | if (old_blkaddr == NULL_ADDR) | |
1357 | type = CURSEG_COLD_DATA; | |
1358 | else | |
1359 | type = CURSEG_WARM_DATA; | |
1360 | } | |
1361 | } else { | |
1362 | if (!IS_CURSEG(sbi, segno)) | |
351df4b2 JK |
1363 | type = CURSEG_WARM_DATA; |
1364 | } | |
19f106bc | 1365 | |
351df4b2 JK |
1366 | curseg = CURSEG_I(sbi, type); |
1367 | ||
1368 | mutex_lock(&curseg->curseg_mutex); | |
1369 | mutex_lock(&sit_i->sentry_lock); | |
1370 | ||
1371 | old_cursegno = curseg->segno; | |
19f106bc | 1372 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
1373 | |
1374 | /* change the current segment */ | |
1375 | if (segno != curseg->segno) { | |
1376 | curseg->next_segno = segno; | |
1377 | change_curseg(sbi, type, true); | |
1378 | } | |
1379 | ||
491c0854 | 1380 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 1381 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1382 | |
6e2c64ad JK |
1383 | if (!recover_curseg) |
1384 | update_sit_entry(sbi, new_blkaddr, 1); | |
1385 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
1386 | update_sit_entry(sbi, old_blkaddr, -1); | |
1387 | ||
1388 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
1389 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
1390 | ||
351df4b2 | 1391 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 1392 | |
19f106bc CY |
1393 | if (recover_curseg) { |
1394 | if (old_cursegno != curseg->segno) { | |
1395 | curseg->next_segno = old_cursegno; | |
1396 | change_curseg(sbi, type, true); | |
1397 | } | |
1398 | curseg->next_blkoff = old_blkoff; | |
1399 | } | |
1400 | ||
351df4b2 JK |
1401 | mutex_unlock(&sit_i->sentry_lock); |
1402 | mutex_unlock(&curseg->curseg_mutex); | |
1403 | } | |
1404 | ||
528e3459 CY |
1405 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
1406 | block_t old_addr, block_t new_addr, | |
1407 | unsigned char version, bool recover_curseg) | |
1408 | { | |
1409 | struct f2fs_summary sum; | |
1410 | ||
1411 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
1412 | ||
1413 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, recover_curseg); | |
1414 | ||
1415 | dn->data_blkaddr = new_addr; | |
1416 | set_data_blkaddr(dn); | |
1417 | f2fs_update_extent_cache(dn); | |
1418 | } | |
1419 | ||
93dfe2ac | 1420 | void f2fs_wait_on_page_writeback(struct page *page, |
fec1d657 | 1421 | enum page_type type, bool ordered) |
93dfe2ac | 1422 | { |
93dfe2ac | 1423 | if (PageWriteback(page)) { |
4081363f JK |
1424 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
1425 | ||
0c3a5797 | 1426 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, type, WRITE); |
fec1d657 JK |
1427 | if (ordered) |
1428 | wait_on_page_writeback(page); | |
1429 | else | |
1430 | wait_for_stable_page(page); | |
93dfe2ac JK |
1431 | } |
1432 | } | |
1433 | ||
08b39fbd CY |
1434 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *sbi, |
1435 | block_t blkaddr) | |
1436 | { | |
1437 | struct page *cpage; | |
1438 | ||
1439 | if (blkaddr == NEW_ADDR) | |
1440 | return; | |
1441 | ||
1442 | f2fs_bug_on(sbi, blkaddr == NULL_ADDR); | |
1443 | ||
1444 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); | |
1445 | if (cpage) { | |
fec1d657 | 1446 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
08b39fbd CY |
1447 | f2fs_put_page(cpage, 1); |
1448 | } | |
1449 | } | |
1450 | ||
351df4b2 JK |
1451 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
1452 | { | |
1453 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1454 | struct curseg_info *seg_i; | |
1455 | unsigned char *kaddr; | |
1456 | struct page *page; | |
1457 | block_t start; | |
1458 | int i, j, offset; | |
1459 | ||
1460 | start = start_sum_block(sbi); | |
1461 | ||
1462 | page = get_meta_page(sbi, start++); | |
1463 | kaddr = (unsigned char *)page_address(page); | |
1464 | ||
1465 | /* Step 1: restore nat cache */ | |
1466 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
1467 | memcpy(&seg_i->sum_blk->n_nats, kaddr, SUM_JOURNAL_SIZE); | |
1468 | ||
1469 | /* Step 2: restore sit cache */ | |
1470 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1471 | memcpy(&seg_i->sum_blk->n_sits, kaddr + SUM_JOURNAL_SIZE, | |
1472 | SUM_JOURNAL_SIZE); | |
1473 | offset = 2 * SUM_JOURNAL_SIZE; | |
1474 | ||
1475 | /* Step 3: restore summary entries */ | |
1476 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1477 | unsigned short blk_off; | |
1478 | unsigned int segno; | |
1479 | ||
1480 | seg_i = CURSEG_I(sbi, i); | |
1481 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
1482 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
1483 | seg_i->next_segno = segno; | |
1484 | reset_curseg(sbi, i, 0); | |
1485 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
1486 | seg_i->next_blkoff = blk_off; | |
1487 | ||
1488 | if (seg_i->alloc_type == SSR) | |
1489 | blk_off = sbi->blocks_per_seg; | |
1490 | ||
1491 | for (j = 0; j < blk_off; j++) { | |
1492 | struct f2fs_summary *s; | |
1493 | s = (struct f2fs_summary *)(kaddr + offset); | |
1494 | seg_i->sum_blk->entries[j] = *s; | |
1495 | offset += SUMMARY_SIZE; | |
1496 | if (offset + SUMMARY_SIZE <= PAGE_CACHE_SIZE - | |
1497 | SUM_FOOTER_SIZE) | |
1498 | continue; | |
1499 | ||
1500 | f2fs_put_page(page, 1); | |
1501 | page = NULL; | |
1502 | ||
1503 | page = get_meta_page(sbi, start++); | |
1504 | kaddr = (unsigned char *)page_address(page); | |
1505 | offset = 0; | |
1506 | } | |
1507 | } | |
1508 | f2fs_put_page(page, 1); | |
1509 | return 0; | |
1510 | } | |
1511 | ||
1512 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
1513 | { | |
1514 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1515 | struct f2fs_summary_block *sum; | |
1516 | struct curseg_info *curseg; | |
1517 | struct page *new; | |
1518 | unsigned short blk_off; | |
1519 | unsigned int segno = 0; | |
1520 | block_t blk_addr = 0; | |
1521 | ||
1522 | /* get segment number and block addr */ | |
1523 | if (IS_DATASEG(type)) { | |
1524 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
1525 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
1526 | CURSEG_HOT_DATA]); | |
119ee914 | 1527 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1528 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
1529 | else | |
1530 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
1531 | } else { | |
1532 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
1533 | CURSEG_HOT_NODE]); | |
1534 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
1535 | CURSEG_HOT_NODE]); | |
119ee914 | 1536 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1537 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
1538 | type - CURSEG_HOT_NODE); | |
1539 | else | |
1540 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
1541 | } | |
1542 | ||
1543 | new = get_meta_page(sbi, blk_addr); | |
1544 | sum = (struct f2fs_summary_block *)page_address(new); | |
1545 | ||
1546 | if (IS_NODESEG(type)) { | |
119ee914 | 1547 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
1548 | struct f2fs_summary *ns = &sum->entries[0]; |
1549 | int i; | |
1550 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
1551 | ns->version = 0; | |
1552 | ns->ofs_in_node = 0; | |
1553 | } | |
1554 | } else { | |
d653788a GZ |
1555 | int err; |
1556 | ||
1557 | err = restore_node_summary(sbi, segno, sum); | |
1558 | if (err) { | |
351df4b2 | 1559 | f2fs_put_page(new, 1); |
d653788a | 1560 | return err; |
351df4b2 JK |
1561 | } |
1562 | } | |
1563 | } | |
1564 | ||
1565 | /* set uncompleted segment to curseg */ | |
1566 | curseg = CURSEG_I(sbi, type); | |
1567 | mutex_lock(&curseg->curseg_mutex); | |
1568 | memcpy(curseg->sum_blk, sum, PAGE_CACHE_SIZE); | |
1569 | curseg->next_segno = segno; | |
1570 | reset_curseg(sbi, type, 0); | |
1571 | curseg->alloc_type = ckpt->alloc_type[type]; | |
1572 | curseg->next_blkoff = blk_off; | |
1573 | mutex_unlock(&curseg->curseg_mutex); | |
1574 | f2fs_put_page(new, 1); | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
1579 | { | |
1580 | int type = CURSEG_HOT_DATA; | |
e4fc5fbf | 1581 | int err; |
351df4b2 | 1582 | |
25ca923b | 1583 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
1584 | int npages = npages_for_summary_flush(sbi, true); |
1585 | ||
1586 | if (npages >= 2) | |
1587 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
26879fb1 | 1588 | META_CP, true); |
3fa06d7b | 1589 | |
351df4b2 JK |
1590 | /* restore for compacted data summary */ |
1591 | if (read_compacted_summaries(sbi)) | |
1592 | return -EINVAL; | |
1593 | type = CURSEG_HOT_NODE; | |
1594 | } | |
1595 | ||
119ee914 | 1596 | if (__exist_node_summaries(sbi)) |
3fa06d7b | 1597 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 1598 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 1599 | |
e4fc5fbf CY |
1600 | for (; type <= CURSEG_COLD_NODE; type++) { |
1601 | err = read_normal_summaries(sbi, type); | |
1602 | if (err) | |
1603 | return err; | |
1604 | } | |
1605 | ||
351df4b2 JK |
1606 | return 0; |
1607 | } | |
1608 | ||
1609 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
1610 | { | |
1611 | struct page *page; | |
1612 | unsigned char *kaddr; | |
1613 | struct f2fs_summary *summary; | |
1614 | struct curseg_info *seg_i; | |
1615 | int written_size = 0; | |
1616 | int i, j; | |
1617 | ||
1618 | page = grab_meta_page(sbi, blkaddr++); | |
1619 | kaddr = (unsigned char *)page_address(page); | |
1620 | ||
1621 | /* Step 1: write nat cache */ | |
1622 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
1623 | memcpy(kaddr, &seg_i->sum_blk->n_nats, SUM_JOURNAL_SIZE); | |
1624 | written_size += SUM_JOURNAL_SIZE; | |
1625 | ||
1626 | /* Step 2: write sit cache */ | |
1627 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1628 | memcpy(kaddr + written_size, &seg_i->sum_blk->n_sits, | |
1629 | SUM_JOURNAL_SIZE); | |
1630 | written_size += SUM_JOURNAL_SIZE; | |
1631 | ||
351df4b2 JK |
1632 | /* Step 3: write summary entries */ |
1633 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1634 | unsigned short blkoff; | |
1635 | seg_i = CURSEG_I(sbi, i); | |
1636 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1637 | blkoff = sbi->blocks_per_seg; | |
1638 | else | |
1639 | blkoff = curseg_blkoff(sbi, i); | |
1640 | ||
1641 | for (j = 0; j < blkoff; j++) { | |
1642 | if (!page) { | |
1643 | page = grab_meta_page(sbi, blkaddr++); | |
1644 | kaddr = (unsigned char *)page_address(page); | |
1645 | written_size = 0; | |
1646 | } | |
1647 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
1648 | *summary = seg_i->sum_blk->entries[j]; | |
1649 | written_size += SUMMARY_SIZE; | |
351df4b2 JK |
1650 | |
1651 | if (written_size + SUMMARY_SIZE <= PAGE_CACHE_SIZE - | |
1652 | SUM_FOOTER_SIZE) | |
1653 | continue; | |
1654 | ||
e8d61a74 | 1655 | set_page_dirty(page); |
351df4b2 JK |
1656 | f2fs_put_page(page, 1); |
1657 | page = NULL; | |
1658 | } | |
1659 | } | |
e8d61a74 CY |
1660 | if (page) { |
1661 | set_page_dirty(page); | |
351df4b2 | 1662 | f2fs_put_page(page, 1); |
e8d61a74 | 1663 | } |
351df4b2 JK |
1664 | } |
1665 | ||
1666 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
1667 | block_t blkaddr, int type) | |
1668 | { | |
1669 | int i, end; | |
1670 | if (IS_DATASEG(type)) | |
1671 | end = type + NR_CURSEG_DATA_TYPE; | |
1672 | else | |
1673 | end = type + NR_CURSEG_NODE_TYPE; | |
1674 | ||
1675 | for (i = type; i < end; i++) { | |
1676 | struct curseg_info *sum = CURSEG_I(sbi, i); | |
1677 | mutex_lock(&sum->curseg_mutex); | |
1678 | write_sum_page(sbi, sum->sum_blk, blkaddr + (i - type)); | |
1679 | mutex_unlock(&sum->curseg_mutex); | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1684 | { | |
25ca923b | 1685 | if (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
1686 | write_compacted_summaries(sbi, start_blk); |
1687 | else | |
1688 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
1689 | } | |
1690 | ||
1691 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1692 | { | |
119ee914 | 1693 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
1694 | } |
1695 | ||
1696 | int lookup_journal_in_cursum(struct f2fs_summary_block *sum, int type, | |
1697 | unsigned int val, int alloc) | |
1698 | { | |
1699 | int i; | |
1700 | ||
1701 | if (type == NAT_JOURNAL) { | |
1702 | for (i = 0; i < nats_in_cursum(sum); i++) { | |
1703 | if (le32_to_cpu(nid_in_journal(sum, i)) == val) | |
1704 | return i; | |
1705 | } | |
855639de | 1706 | if (alloc && __has_cursum_space(sum, 1, NAT_JOURNAL)) |
351df4b2 JK |
1707 | return update_nats_in_cursum(sum, 1); |
1708 | } else if (type == SIT_JOURNAL) { | |
1709 | for (i = 0; i < sits_in_cursum(sum); i++) | |
1710 | if (le32_to_cpu(segno_in_journal(sum, i)) == val) | |
1711 | return i; | |
855639de | 1712 | if (alloc && __has_cursum_space(sum, 1, SIT_JOURNAL)) |
351df4b2 JK |
1713 | return update_sits_in_cursum(sum, 1); |
1714 | } | |
1715 | return -1; | |
1716 | } | |
1717 | ||
1718 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
1719 | unsigned int segno) | |
1720 | { | |
2cc22186 | 1721 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
1722 | } |
1723 | ||
1724 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
1725 | unsigned int start) | |
1726 | { | |
1727 | struct sit_info *sit_i = SIT_I(sbi); | |
1728 | struct page *src_page, *dst_page; | |
1729 | pgoff_t src_off, dst_off; | |
1730 | void *src_addr, *dst_addr; | |
1731 | ||
1732 | src_off = current_sit_addr(sbi, start); | |
1733 | dst_off = next_sit_addr(sbi, src_off); | |
1734 | ||
1735 | /* get current sit block page without lock */ | |
1736 | src_page = get_meta_page(sbi, src_off); | |
1737 | dst_page = grab_meta_page(sbi, dst_off); | |
9850cf4a | 1738 | f2fs_bug_on(sbi, PageDirty(src_page)); |
351df4b2 JK |
1739 | |
1740 | src_addr = page_address(src_page); | |
1741 | dst_addr = page_address(dst_page); | |
1742 | memcpy(dst_addr, src_addr, PAGE_CACHE_SIZE); | |
1743 | ||
1744 | set_page_dirty(dst_page); | |
1745 | f2fs_put_page(src_page, 1); | |
1746 | ||
1747 | set_to_next_sit(sit_i, start); | |
1748 | ||
1749 | return dst_page; | |
1750 | } | |
1751 | ||
184a5cd2 CY |
1752 | static struct sit_entry_set *grab_sit_entry_set(void) |
1753 | { | |
1754 | struct sit_entry_set *ses = | |
80c54505 | 1755 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
1756 | |
1757 | ses->entry_cnt = 0; | |
1758 | INIT_LIST_HEAD(&ses->set_list); | |
1759 | return ses; | |
1760 | } | |
1761 | ||
1762 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
1763 | { | |
1764 | list_del(&ses->set_list); | |
1765 | kmem_cache_free(sit_entry_set_slab, ses); | |
1766 | } | |
1767 | ||
1768 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
1769 | struct list_head *head) | |
1770 | { | |
1771 | struct sit_entry_set *next = ses; | |
1772 | ||
1773 | if (list_is_last(&ses->set_list, head)) | |
1774 | return; | |
1775 | ||
1776 | list_for_each_entry_continue(next, head, set_list) | |
1777 | if (ses->entry_cnt <= next->entry_cnt) | |
1778 | break; | |
1779 | ||
1780 | list_move_tail(&ses->set_list, &next->set_list); | |
1781 | } | |
1782 | ||
1783 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
1784 | { | |
1785 | struct sit_entry_set *ses; | |
1786 | unsigned int start_segno = START_SEGNO(segno); | |
1787 | ||
1788 | list_for_each_entry(ses, head, set_list) { | |
1789 | if (ses->start_segno == start_segno) { | |
1790 | ses->entry_cnt++; | |
1791 | adjust_sit_entry_set(ses, head); | |
1792 | return; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | ses = grab_sit_entry_set(); | |
1797 | ||
1798 | ses->start_segno = start_segno; | |
1799 | ses->entry_cnt++; | |
1800 | list_add(&ses->set_list, head); | |
1801 | } | |
1802 | ||
1803 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
1804 | { | |
1805 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
1806 | struct list_head *set_list = &sm_info->sit_entry_set; | |
1807 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
1808 | unsigned int segno; |
1809 | ||
7cd8558b | 1810 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
1811 | add_sit_entry(segno, set_list); |
1812 | } | |
1813 | ||
1814 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
1815 | { |
1816 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1817 | struct f2fs_summary_block *sum = curseg->sum_blk; | |
1818 | int i; | |
1819 | ||
184a5cd2 CY |
1820 | for (i = sits_in_cursum(sum) - 1; i >= 0; i--) { |
1821 | unsigned int segno; | |
1822 | bool dirtied; | |
1823 | ||
1824 | segno = le32_to_cpu(segno_in_journal(sum, i)); | |
1825 | dirtied = __mark_sit_entry_dirty(sbi, segno); | |
1826 | ||
1827 | if (!dirtied) | |
1828 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 1829 | } |
184a5cd2 | 1830 | update_sits_in_cursum(sum, -sits_in_cursum(sum)); |
351df4b2 JK |
1831 | } |
1832 | ||
0a8165d7 | 1833 | /* |
351df4b2 JK |
1834 | * CP calls this function, which flushes SIT entries including sit_journal, |
1835 | * and moves prefree segs to free segs. | |
1836 | */ | |
4b2fecc8 | 1837 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
1838 | { |
1839 | struct sit_info *sit_i = SIT_I(sbi); | |
1840 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
1841 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
1842 | struct f2fs_summary_block *sum = curseg->sum_blk; | |
184a5cd2 CY |
1843 | struct sit_entry_set *ses, *tmp; |
1844 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 1845 | bool to_journal = true; |
4b2fecc8 | 1846 | struct seg_entry *se; |
351df4b2 JK |
1847 | |
1848 | mutex_lock(&curseg->curseg_mutex); | |
1849 | mutex_lock(&sit_i->sentry_lock); | |
1850 | ||
2b11a74b WL |
1851 | if (!sit_i->dirty_sentries) |
1852 | goto out; | |
1853 | ||
351df4b2 | 1854 | /* |
184a5cd2 CY |
1855 | * add and account sit entries of dirty bitmap in sit entry |
1856 | * set temporarily | |
351df4b2 | 1857 | */ |
184a5cd2 | 1858 | add_sits_in_set(sbi); |
351df4b2 | 1859 | |
184a5cd2 CY |
1860 | /* |
1861 | * if there are no enough space in journal to store dirty sit | |
1862 | * entries, remove all entries from journal and add and account | |
1863 | * them in sit entry set. | |
1864 | */ | |
1865 | if (!__has_cursum_space(sum, sit_i->dirty_sentries, SIT_JOURNAL)) | |
1866 | remove_sits_in_journal(sbi); | |
b2955550 | 1867 | |
184a5cd2 CY |
1868 | /* |
1869 | * there are two steps to flush sit entries: | |
1870 | * #1, flush sit entries to journal in current cold data summary block. | |
1871 | * #2, flush sit entries to sit page. | |
1872 | */ | |
1873 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 1874 | struct page *page = NULL; |
184a5cd2 CY |
1875 | struct f2fs_sit_block *raw_sit = NULL; |
1876 | unsigned int start_segno = ses->start_segno; | |
1877 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 1878 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
1879 | unsigned int segno = start_segno; |
1880 | ||
1881 | if (to_journal && | |
1882 | !__has_cursum_space(sum, ses->entry_cnt, SIT_JOURNAL)) | |
1883 | to_journal = false; | |
1884 | ||
1885 | if (!to_journal) { | |
1886 | page = get_next_sit_page(sbi, start_segno); | |
1887 | raw_sit = page_address(page); | |
351df4b2 | 1888 | } |
351df4b2 | 1889 | |
184a5cd2 CY |
1890 | /* flush dirty sit entries in region of current sit set */ |
1891 | for_each_set_bit_from(segno, bitmap, end) { | |
1892 | int offset, sit_offset; | |
4b2fecc8 JK |
1893 | |
1894 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
1895 | |
1896 | /* add discard candidates */ | |
d7bc2484 | 1897 | if (cpc->reason != CP_DISCARD) { |
4b2fecc8 JK |
1898 | cpc->trim_start = segno; |
1899 | add_discard_addrs(sbi, cpc); | |
1900 | } | |
184a5cd2 CY |
1901 | |
1902 | if (to_journal) { | |
1903 | offset = lookup_journal_in_cursum(sum, | |
1904 | SIT_JOURNAL, segno, 1); | |
1905 | f2fs_bug_on(sbi, offset < 0); | |
1906 | segno_in_journal(sum, offset) = | |
1907 | cpu_to_le32(segno); | |
1908 | seg_info_to_raw_sit(se, | |
1909 | &sit_in_journal(sum, offset)); | |
1910 | } else { | |
1911 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
1912 | seg_info_to_raw_sit(se, | |
1913 | &raw_sit->entries[sit_offset]); | |
1914 | } | |
351df4b2 | 1915 | |
184a5cd2 CY |
1916 | __clear_bit(segno, bitmap); |
1917 | sit_i->dirty_sentries--; | |
1918 | ses->entry_cnt--; | |
351df4b2 JK |
1919 | } |
1920 | ||
184a5cd2 CY |
1921 | if (!to_journal) |
1922 | f2fs_put_page(page, 1); | |
1923 | ||
1924 | f2fs_bug_on(sbi, ses->entry_cnt); | |
1925 | release_sit_entry_set(ses); | |
351df4b2 | 1926 | } |
184a5cd2 CY |
1927 | |
1928 | f2fs_bug_on(sbi, !list_empty(head)); | |
1929 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 1930 | out: |
4b2fecc8 JK |
1931 | if (cpc->reason == CP_DISCARD) { |
1932 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) | |
1933 | add_discard_addrs(sbi, cpc); | |
1934 | } | |
351df4b2 JK |
1935 | mutex_unlock(&sit_i->sentry_lock); |
1936 | mutex_unlock(&curseg->curseg_mutex); | |
1937 | ||
351df4b2 JK |
1938 | set_prefree_as_free_segments(sbi); |
1939 | } | |
1940 | ||
1941 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
1942 | { | |
1943 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
1944 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1945 | struct sit_info *sit_i; | |
1946 | unsigned int sit_segs, start; | |
1947 | char *src_bitmap, *dst_bitmap; | |
1948 | unsigned int bitmap_size; | |
1949 | ||
1950 | /* allocate memory for SIT information */ | |
1951 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); | |
1952 | if (!sit_i) | |
1953 | return -ENOMEM; | |
1954 | ||
1955 | SM_I(sbi)->sit_info = sit_i; | |
1956 | ||
39307a8e JK |
1957 | sit_i->sentries = f2fs_kvzalloc(MAIN_SEGS(sbi) * |
1958 | sizeof(struct seg_entry), GFP_KERNEL); | |
351df4b2 JK |
1959 | if (!sit_i->sentries) |
1960 | return -ENOMEM; | |
1961 | ||
7cd8558b | 1962 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 1963 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
1964 | if (!sit_i->dirty_sentries_bitmap) |
1965 | return -ENOMEM; | |
1966 | ||
7cd8558b | 1967 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
1968 | sit_i->sentries[start].cur_valid_map |
1969 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
1970 | sit_i->sentries[start].ckpt_valid_map | |
1971 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
a66cdd98 JK |
1972 | sit_i->sentries[start].discard_map |
1973 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
1974 | if (!sit_i->sentries[start].cur_valid_map || | |
1975 | !sit_i->sentries[start].ckpt_valid_map || | |
1976 | !sit_i->sentries[start].discard_map) | |
351df4b2 JK |
1977 | return -ENOMEM; |
1978 | } | |
1979 | ||
60a3b782 JK |
1980 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
1981 | if (!sit_i->tmp_map) | |
1982 | return -ENOMEM; | |
1983 | ||
351df4b2 | 1984 | if (sbi->segs_per_sec > 1) { |
39307a8e JK |
1985 | sit_i->sec_entries = f2fs_kvzalloc(MAIN_SECS(sbi) * |
1986 | sizeof(struct sec_entry), GFP_KERNEL); | |
351df4b2 JK |
1987 | if (!sit_i->sec_entries) |
1988 | return -ENOMEM; | |
1989 | } | |
1990 | ||
1991 | /* get information related with SIT */ | |
1992 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
1993 | ||
1994 | /* setup SIT bitmap from ckeckpoint pack */ | |
1995 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
1996 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
1997 | ||
79b5793b | 1998 | dst_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
1999 | if (!dst_bitmap) |
2000 | return -ENOMEM; | |
351df4b2 JK |
2001 | |
2002 | /* init SIT information */ | |
2003 | sit_i->s_ops = &default_salloc_ops; | |
2004 | ||
2005 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
2006 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
2007 | sit_i->written_valid_blocks = le64_to_cpu(ckpt->valid_block_count); | |
2008 | sit_i->sit_bitmap = dst_bitmap; | |
2009 | sit_i->bitmap_size = bitmap_size; | |
2010 | sit_i->dirty_sentries = 0; | |
2011 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
2012 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
2013 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; | |
2014 | mutex_init(&sit_i->sentry_lock); | |
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
2019 | { | |
351df4b2 JK |
2020 | struct free_segmap_info *free_i; |
2021 | unsigned int bitmap_size, sec_bitmap_size; | |
2022 | ||
2023 | /* allocate memory for free segmap information */ | |
2024 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); | |
2025 | if (!free_i) | |
2026 | return -ENOMEM; | |
2027 | ||
2028 | SM_I(sbi)->free_info = free_i; | |
2029 | ||
7cd8558b | 2030 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2031 | free_i->free_segmap = f2fs_kvmalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2032 | if (!free_i->free_segmap) |
2033 | return -ENOMEM; | |
2034 | ||
7cd8558b | 2035 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
39307a8e | 2036 | free_i->free_secmap = f2fs_kvmalloc(sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2037 | if (!free_i->free_secmap) |
2038 | return -ENOMEM; | |
2039 | ||
2040 | /* set all segments as dirty temporarily */ | |
2041 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
2042 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
2043 | ||
2044 | /* init free segmap information */ | |
7cd8558b | 2045 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
2046 | free_i->free_segments = 0; |
2047 | free_i->free_sections = 0; | |
1a118ccf | 2048 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
2049 | return 0; |
2050 | } | |
2051 | ||
2052 | static int build_curseg(struct f2fs_sb_info *sbi) | |
2053 | { | |
1042d60f | 2054 | struct curseg_info *array; |
351df4b2 JK |
2055 | int i; |
2056 | ||
b434babf | 2057 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
351df4b2 JK |
2058 | if (!array) |
2059 | return -ENOMEM; | |
2060 | ||
2061 | SM_I(sbi)->curseg_array = array; | |
2062 | ||
2063 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
2064 | mutex_init(&array[i].curseg_mutex); | |
2065 | array[i].sum_blk = kzalloc(PAGE_CACHE_SIZE, GFP_KERNEL); | |
2066 | if (!array[i].sum_blk) | |
2067 | return -ENOMEM; | |
2068 | array[i].segno = NULL_SEGNO; | |
2069 | array[i].next_blkoff = 0; | |
2070 | } | |
2071 | return restore_curseg_summaries(sbi); | |
2072 | } | |
2073 | ||
2074 | static void build_sit_entries(struct f2fs_sb_info *sbi) | |
2075 | { | |
2076 | struct sit_info *sit_i = SIT_I(sbi); | |
2077 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
2078 | struct f2fs_summary_block *sum = curseg->sum_blk; | |
74de593a CY |
2079 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
2080 | unsigned int i, start, end; | |
2081 | unsigned int readed, start_blk = 0; | |
90a893c7 | 2082 | int nrpages = MAX_BIO_BLOCKS(sbi); |
351df4b2 | 2083 | |
74de593a | 2084 | do { |
26879fb1 | 2085 | readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT, true); |
74de593a CY |
2086 | |
2087 | start = start_blk * sit_i->sents_per_block; | |
2088 | end = (start_blk + readed) * sit_i->sents_per_block; | |
2089 | ||
7cd8558b | 2090 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a CY |
2091 | struct seg_entry *se = &sit_i->sentries[start]; |
2092 | struct f2fs_sit_block *sit_blk; | |
2093 | struct f2fs_sit_entry sit; | |
2094 | struct page *page; | |
2095 | ||
2096 | mutex_lock(&curseg->curseg_mutex); | |
2097 | for (i = 0; i < sits_in_cursum(sum); i++) { | |
6c311ec6 CF |
2098 | if (le32_to_cpu(segno_in_journal(sum, i)) |
2099 | == start) { | |
74de593a CY |
2100 | sit = sit_in_journal(sum, i); |
2101 | mutex_unlock(&curseg->curseg_mutex); | |
2102 | goto got_it; | |
2103 | } | |
351df4b2 | 2104 | } |
74de593a CY |
2105 | mutex_unlock(&curseg->curseg_mutex); |
2106 | ||
2107 | page = get_current_sit_page(sbi, start); | |
2108 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
2109 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
2110 | f2fs_put_page(page, 1); | |
351df4b2 | 2111 | got_it: |
74de593a CY |
2112 | check_block_count(sbi, start, &sit); |
2113 | seg_info_from_raw_sit(se, &sit); | |
a66cdd98 JK |
2114 | |
2115 | /* build discard map only one time */ | |
2116 | memcpy(se->discard_map, se->cur_valid_map, SIT_VBLOCK_MAP_SIZE); | |
2117 | sbi->discard_blks += sbi->blocks_per_seg - se->valid_blocks; | |
2118 | ||
74de593a CY |
2119 | if (sbi->segs_per_sec > 1) { |
2120 | struct sec_entry *e = get_sec_entry(sbi, start); | |
2121 | e->valid_blocks += se->valid_blocks; | |
2122 | } | |
351df4b2 | 2123 | } |
74de593a CY |
2124 | start_blk += readed; |
2125 | } while (start_blk < sit_blk_cnt); | |
351df4b2 JK |
2126 | } |
2127 | ||
2128 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
2129 | { | |
2130 | unsigned int start; | |
2131 | int type; | |
2132 | ||
7cd8558b | 2133 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2134 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
2135 | if (!sentry->valid_blocks) | |
2136 | __set_free(sbi, start); | |
2137 | } | |
2138 | ||
2139 | /* set use the current segments */ | |
2140 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
2141 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
2142 | __set_test_and_inuse(sbi, curseg_t->segno); | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
2147 | { | |
2148 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2149 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 2150 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
2151 | unsigned short valid_blocks; |
2152 | ||
8736fbf0 | 2153 | while (1) { |
351df4b2 | 2154 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
2155 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
2156 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
2157 | break; |
2158 | offset = segno + 1; | |
2159 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
ec325b52 | 2160 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 2161 | continue; |
ec325b52 JK |
2162 | if (valid_blocks > sbi->blocks_per_seg) { |
2163 | f2fs_bug_on(sbi, 1); | |
2164 | continue; | |
2165 | } | |
351df4b2 JK |
2166 | mutex_lock(&dirty_i->seglist_lock); |
2167 | __locate_dirty_segment(sbi, segno, DIRTY); | |
2168 | mutex_unlock(&dirty_i->seglist_lock); | |
2169 | } | |
2170 | } | |
2171 | ||
5ec4e49f | 2172 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2173 | { |
2174 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 2175 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 2176 | |
39307a8e | 2177 | dirty_i->victim_secmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
5ec4e49f | 2178 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
2179 | return -ENOMEM; |
2180 | return 0; | |
2181 | } | |
2182 | ||
2183 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
2184 | { | |
2185 | struct dirty_seglist_info *dirty_i; | |
2186 | unsigned int bitmap_size, i; | |
2187 | ||
2188 | /* allocate memory for dirty segments list information */ | |
2189 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); | |
2190 | if (!dirty_i) | |
2191 | return -ENOMEM; | |
2192 | ||
2193 | SM_I(sbi)->dirty_info = dirty_i; | |
2194 | mutex_init(&dirty_i->seglist_lock); | |
2195 | ||
7cd8558b | 2196 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
2197 | |
2198 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
39307a8e | 2199 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2200 | if (!dirty_i->dirty_segmap[i]) |
2201 | return -ENOMEM; | |
2202 | } | |
2203 | ||
2204 | init_dirty_segmap(sbi); | |
5ec4e49f | 2205 | return init_victim_secmap(sbi); |
351df4b2 JK |
2206 | } |
2207 | ||
0a8165d7 | 2208 | /* |
351df4b2 JK |
2209 | * Update min, max modified time for cost-benefit GC algorithm |
2210 | */ | |
2211 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
2212 | { | |
2213 | struct sit_info *sit_i = SIT_I(sbi); | |
2214 | unsigned int segno; | |
2215 | ||
2216 | mutex_lock(&sit_i->sentry_lock); | |
2217 | ||
2218 | sit_i->min_mtime = LLONG_MAX; | |
2219 | ||
7cd8558b | 2220 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
2221 | unsigned int i; |
2222 | unsigned long long mtime = 0; | |
2223 | ||
2224 | for (i = 0; i < sbi->segs_per_sec; i++) | |
2225 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
2226 | ||
2227 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
2228 | ||
2229 | if (sit_i->min_mtime > mtime) | |
2230 | sit_i->min_mtime = mtime; | |
2231 | } | |
2232 | sit_i->max_mtime = get_mtime(sbi); | |
2233 | mutex_unlock(&sit_i->sentry_lock); | |
2234 | } | |
2235 | ||
2236 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
2237 | { | |
2238 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2239 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 2240 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
2241 | int err; |
2242 | ||
2243 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); | |
2244 | if (!sm_info) | |
2245 | return -ENOMEM; | |
2246 | ||
2247 | /* init sm info */ | |
2248 | sbi->sm_info = sm_info; | |
351df4b2 JK |
2249 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
2250 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
2251 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
2252 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
2253 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
2254 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
2255 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
2256 | sm_info->rec_prefree_segments = sm_info->main_segments * |
2257 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
9b5f136f | 2258 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; |
216fbd64 | 2259 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 2260 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
351df4b2 | 2261 | |
7fd9e544 JK |
2262 | INIT_LIST_HEAD(&sm_info->discard_list); |
2263 | sm_info->nr_discards = 0; | |
2264 | sm_info->max_discards = 0; | |
2265 | ||
bba681cb JK |
2266 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
2267 | ||
184a5cd2 CY |
2268 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
2269 | ||
b270ad6f | 2270 | if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
2271 | err = create_flush_cmd_control(sbi); |
2272 | if (err) | |
a688b9d9 | 2273 | return err; |
6b4afdd7 JK |
2274 | } |
2275 | ||
351df4b2 JK |
2276 | err = build_sit_info(sbi); |
2277 | if (err) | |
2278 | return err; | |
2279 | err = build_free_segmap(sbi); | |
2280 | if (err) | |
2281 | return err; | |
2282 | err = build_curseg(sbi); | |
2283 | if (err) | |
2284 | return err; | |
2285 | ||
2286 | /* reinit free segmap based on SIT */ | |
2287 | build_sit_entries(sbi); | |
2288 | ||
2289 | init_free_segmap(sbi); | |
2290 | err = build_dirty_segmap(sbi); | |
2291 | if (err) | |
2292 | return err; | |
2293 | ||
2294 | init_min_max_mtime(sbi); | |
2295 | return 0; | |
2296 | } | |
2297 | ||
2298 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
2299 | enum dirty_type dirty_type) | |
2300 | { | |
2301 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2302 | ||
2303 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 2304 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
2305 | dirty_i->nr_dirty[dirty_type] = 0; |
2306 | mutex_unlock(&dirty_i->seglist_lock); | |
2307 | } | |
2308 | ||
5ec4e49f | 2309 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2310 | { |
2311 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 2312 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
2313 | } |
2314 | ||
2315 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
2316 | { | |
2317 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2318 | int i; | |
2319 | ||
2320 | if (!dirty_i) | |
2321 | return; | |
2322 | ||
2323 | /* discard pre-free/dirty segments list */ | |
2324 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
2325 | discard_dirty_segmap(sbi, i); | |
2326 | ||
5ec4e49f | 2327 | destroy_victim_secmap(sbi); |
351df4b2 JK |
2328 | SM_I(sbi)->dirty_info = NULL; |
2329 | kfree(dirty_i); | |
2330 | } | |
2331 | ||
2332 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
2333 | { | |
2334 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
2335 | int i; | |
2336 | ||
2337 | if (!array) | |
2338 | return; | |
2339 | SM_I(sbi)->curseg_array = NULL; | |
2340 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2341 | kfree(array[i].sum_blk); | |
2342 | kfree(array); | |
2343 | } | |
2344 | ||
2345 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
2346 | { | |
2347 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
2348 | if (!free_i) | |
2349 | return; | |
2350 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
2351 | kvfree(free_i->free_segmap); |
2352 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
2353 | kfree(free_i); |
2354 | } | |
2355 | ||
2356 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
2357 | { | |
2358 | struct sit_info *sit_i = SIT_I(sbi); | |
2359 | unsigned int start; | |
2360 | ||
2361 | if (!sit_i) | |
2362 | return; | |
2363 | ||
2364 | if (sit_i->sentries) { | |
7cd8558b | 2365 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2366 | kfree(sit_i->sentries[start].cur_valid_map); |
2367 | kfree(sit_i->sentries[start].ckpt_valid_map); | |
a66cdd98 | 2368 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
2369 | } |
2370 | } | |
60a3b782 JK |
2371 | kfree(sit_i->tmp_map); |
2372 | ||
39307a8e JK |
2373 | kvfree(sit_i->sentries); |
2374 | kvfree(sit_i->sec_entries); | |
2375 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
2376 | |
2377 | SM_I(sbi)->sit_info = NULL; | |
2378 | kfree(sit_i->sit_bitmap); | |
2379 | kfree(sit_i); | |
2380 | } | |
2381 | ||
2382 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
2383 | { | |
2384 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 2385 | |
3b03f724 CY |
2386 | if (!sm_info) |
2387 | return; | |
2163d198 | 2388 | destroy_flush_cmd_control(sbi); |
351df4b2 JK |
2389 | destroy_dirty_segmap(sbi); |
2390 | destroy_curseg(sbi); | |
2391 | destroy_free_segmap(sbi); | |
2392 | destroy_sit_info(sbi); | |
2393 | sbi->sm_info = NULL; | |
2394 | kfree(sm_info); | |
2395 | } | |
7fd9e544 JK |
2396 | |
2397 | int __init create_segment_manager_caches(void) | |
2398 | { | |
2399 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 2400 | sizeof(struct discard_entry)); |
7fd9e544 | 2401 | if (!discard_entry_slab) |
184a5cd2 CY |
2402 | goto fail; |
2403 | ||
2404 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", | |
c9ee0085 | 2405 | sizeof(struct sit_entry_set)); |
184a5cd2 CY |
2406 | if (!sit_entry_set_slab) |
2407 | goto destory_discard_entry; | |
88b88a66 JK |
2408 | |
2409 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
2410 | sizeof(struct inmem_pages)); | |
2411 | if (!inmem_entry_slab) | |
2412 | goto destroy_sit_entry_set; | |
7fd9e544 | 2413 | return 0; |
184a5cd2 | 2414 | |
88b88a66 JK |
2415 | destroy_sit_entry_set: |
2416 | kmem_cache_destroy(sit_entry_set_slab); | |
184a5cd2 CY |
2417 | destory_discard_entry: |
2418 | kmem_cache_destroy(discard_entry_slab); | |
2419 | fail: | |
2420 | return -ENOMEM; | |
7fd9e544 JK |
2421 | } |
2422 | ||
2423 | void destroy_segment_manager_caches(void) | |
2424 | { | |
184a5cd2 | 2425 | kmem_cache_destroy(sit_entry_set_slab); |
7fd9e544 | 2426 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 2427 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 2428 | } |