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Commit | Line | Data |
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0a8165d7 | 1 | /* |
351df4b2 JK |
2 | * fs/f2fs/segment.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/bio.h> | |
14 | #include <linux/blkdev.h> | |
690e4a3e | 15 | #include <linux/prefetch.h> |
6b4afdd7 | 16 | #include <linux/kthread.h> |
74de593a | 17 | #include <linux/swap.h> |
60b99b48 | 18 | #include <linux/timer.h> |
f46e8809 | 19 | #include <linux/timer.h> |
351df4b2 JK |
20 | |
21 | #include "f2fs.h" | |
22 | #include "segment.h" | |
23 | #include "node.h" | |
9e4ded3f | 24 | #include "trace.h" |
6ec178da | 25 | #include <trace/events/f2fs.h> |
351df4b2 | 26 | |
9a7f143a CL |
27 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
28 | ||
7fd9e544 | 29 | static struct kmem_cache *discard_entry_slab; |
275b66b0 | 30 | static struct kmem_cache *bio_entry_slab; |
184a5cd2 | 31 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 32 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 33 | |
f96999c3 JK |
34 | static unsigned long __reverse_ulong(unsigned char *str) |
35 | { | |
36 | unsigned long tmp = 0; | |
37 | int shift = 24, idx = 0; | |
38 | ||
39 | #if BITS_PER_LONG == 64 | |
40 | shift = 56; | |
41 | #endif | |
42 | while (shift >= 0) { | |
43 | tmp |= (unsigned long)str[idx++] << shift; | |
44 | shift -= BITS_PER_BYTE; | |
45 | } | |
46 | return tmp; | |
47 | } | |
48 | ||
9a7f143a CL |
49 | /* |
50 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
51 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
52 | */ | |
53 | static inline unsigned long __reverse_ffs(unsigned long word) | |
54 | { | |
55 | int num = 0; | |
56 | ||
57 | #if BITS_PER_LONG == 64 | |
f96999c3 | 58 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 59 | num += 32; |
f96999c3 | 60 | else |
9a7f143a | 61 | word >>= 32; |
9a7f143a | 62 | #endif |
f96999c3 | 63 | if ((word & 0xffff0000) == 0) |
9a7f143a | 64 | num += 16; |
f96999c3 | 65 | else |
9a7f143a | 66 | word >>= 16; |
f96999c3 JK |
67 | |
68 | if ((word & 0xff00) == 0) | |
9a7f143a | 69 | num += 8; |
f96999c3 | 70 | else |
9a7f143a | 71 | word >>= 8; |
f96999c3 | 72 | |
9a7f143a CL |
73 | if ((word & 0xf0) == 0) |
74 | num += 4; | |
75 | else | |
76 | word >>= 4; | |
f96999c3 | 77 | |
9a7f143a CL |
78 | if ((word & 0xc) == 0) |
79 | num += 2; | |
80 | else | |
81 | word >>= 2; | |
f96999c3 | 82 | |
9a7f143a CL |
83 | if ((word & 0x2) == 0) |
84 | num += 1; | |
85 | return num; | |
86 | } | |
87 | ||
88 | /* | |
e1c42045 | 89 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 90 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 91 | * @size must be integral times of unsigned long. |
9a7f143a | 92 | * Example: |
f96999c3 JK |
93 | * MSB <--> LSB |
94 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
95 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
96 | */ |
97 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
98 | unsigned long size, unsigned long offset) | |
99 | { | |
100 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 101 | unsigned long result = size; |
9a7f143a | 102 | unsigned long tmp; |
9a7f143a CL |
103 | |
104 | if (offset >= size) | |
105 | return size; | |
106 | ||
692223d1 | 107 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 108 | offset %= BITS_PER_LONG; |
f96999c3 | 109 | |
692223d1 FL |
110 | while (1) { |
111 | if (*p == 0) | |
112 | goto pass; | |
9a7f143a | 113 | |
f96999c3 | 114 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
115 | |
116 | tmp &= ~0UL >> offset; | |
117 | if (size < BITS_PER_LONG) | |
118 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 119 | if (tmp) |
692223d1 FL |
120 | goto found; |
121 | pass: | |
122 | if (size <= BITS_PER_LONG) | |
123 | break; | |
9a7f143a | 124 | size -= BITS_PER_LONG; |
692223d1 | 125 | offset = 0; |
f96999c3 | 126 | p++; |
9a7f143a | 127 | } |
692223d1 FL |
128 | return result; |
129 | found: | |
130 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
131 | } |
132 | ||
133 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
134 | unsigned long size, unsigned long offset) | |
135 | { | |
136 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 137 | unsigned long result = size; |
9a7f143a | 138 | unsigned long tmp; |
9a7f143a CL |
139 | |
140 | if (offset >= size) | |
141 | return size; | |
142 | ||
80609448 | 143 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 144 | offset %= BITS_PER_LONG; |
80609448 JK |
145 | |
146 | while (1) { | |
147 | if (*p == ~0UL) | |
148 | goto pass; | |
149 | ||
f96999c3 | 150 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
151 | |
152 | if (offset) | |
153 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
154 | if (size < BITS_PER_LONG) | |
155 | tmp |= ~0UL >> size; | |
f96999c3 | 156 | if (tmp != ~0UL) |
80609448 JK |
157 | goto found; |
158 | pass: | |
159 | if (size <= BITS_PER_LONG) | |
160 | break; | |
9a7f143a | 161 | size -= BITS_PER_LONG; |
80609448 | 162 | offset = 0; |
f96999c3 | 163 | p++; |
9a7f143a | 164 | } |
80609448 JK |
165 | return result; |
166 | found: | |
167 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
168 | } |
169 | ||
88b88a66 JK |
170 | void register_inmem_page(struct inode *inode, struct page *page) |
171 | { | |
172 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
173 | struct inmem_pages *new; | |
9be32d72 | 174 | |
9e4ded3f | 175 | f2fs_trace_pid(page); |
0722b101 | 176 | |
decd36b6 CY |
177 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
178 | SetPagePrivate(page); | |
179 | ||
88b88a66 JK |
180 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
181 | ||
182 | /* add atomic page indices to the list */ | |
183 | new->page = page; | |
184 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 185 | |
88b88a66 JK |
186 | /* increase reference count with clean state */ |
187 | mutex_lock(&fi->inmem_lock); | |
188 | get_page(page); | |
189 | list_add_tail(&new->list, &fi->inmem_pages); | |
8dcf2ff7 | 190 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 191 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
192 | |
193 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
194 | } |
195 | ||
28bc106b CY |
196 | static int __revoke_inmem_pages(struct inode *inode, |
197 | struct list_head *head, bool drop, bool recover) | |
29b96b54 | 198 | { |
28bc106b | 199 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 200 | struct inmem_pages *cur, *tmp; |
28bc106b | 201 | int err = 0; |
29b96b54 CY |
202 | |
203 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
204 | struct page *page = cur->page; |
205 | ||
206 | if (drop) | |
207 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
208 | ||
209 | lock_page(page); | |
29b96b54 | 210 | |
28bc106b CY |
211 | if (recover) { |
212 | struct dnode_of_data dn; | |
213 | struct node_info ni; | |
214 | ||
215 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
216 | ||
217 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
218 | if (get_dnode_of_data(&dn, page->index, LOOKUP_NODE)) { | |
219 | err = -EAGAIN; | |
220 | goto next; | |
221 | } | |
222 | get_node_info(sbi, dn.nid, &ni); | |
223 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
224 | cur->old_addr, ni.version, true, true); | |
225 | f2fs_put_dnode(&dn); | |
226 | } | |
227 | next: | |
63c52d78 JK |
228 | /* we don't need to invalidate this in the sccessful status */ |
229 | if (drop || recover) | |
230 | ClearPageUptodate(page); | |
28bc106b | 231 | set_page_private(page, 0); |
c81ced05 | 232 | ClearPagePrivate(page); |
28bc106b | 233 | f2fs_put_page(page, 1); |
29b96b54 CY |
234 | |
235 | list_del(&cur->list); | |
236 | kmem_cache_free(inmem_entry_slab, cur); | |
237 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
238 | } | |
28bc106b | 239 | return err; |
29b96b54 CY |
240 | } |
241 | ||
242 | void drop_inmem_pages(struct inode *inode) | |
243 | { | |
244 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
245 | ||
91942321 | 246 | clear_inode_flag(inode, FI_ATOMIC_FILE); |
26dc3d44 | 247 | |
29b96b54 | 248 | mutex_lock(&fi->inmem_lock); |
28bc106b | 249 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
29b96b54 CY |
250 | mutex_unlock(&fi->inmem_lock); |
251 | } | |
252 | ||
28bc106b CY |
253 | static int __commit_inmem_pages(struct inode *inode, |
254 | struct list_head *revoke_list) | |
88b88a66 JK |
255 | { |
256 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
257 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
258 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 259 | struct f2fs_io_info fio = { |
05ca3632 | 260 | .sbi = sbi, |
88b88a66 | 261 | .type = DATA, |
04d328de MC |
262 | .op = REQ_OP_WRITE, |
263 | .op_flags = WRITE_SYNC | REQ_PRIO, | |
4375a336 | 264 | .encrypted_page = NULL, |
88b88a66 | 265 | }; |
29b96b54 | 266 | bool submit_bio = false; |
edb27dee | 267 | int err = 0; |
88b88a66 | 268 | |
88b88a66 | 269 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
270 | struct page *page = cur->page; |
271 | ||
272 | lock_page(page); | |
273 | if (page->mapping == inode->i_mapping) { | |
274 | trace_f2fs_commit_inmem_page(page, INMEM); | |
275 | ||
276 | set_page_dirty(page); | |
277 | f2fs_wait_on_page_writeback(page, DATA, true); | |
933439c8 | 278 | if (clear_page_dirty_for_io(page)) { |
29b96b54 | 279 | inode_dec_dirty_pages(inode); |
933439c8 CY |
280 | remove_dirty_inode(inode); |
281 | } | |
28bc106b CY |
282 | |
283 | fio.page = page; | |
29b96b54 CY |
284 | err = do_write_data_page(&fio); |
285 | if (err) { | |
28bc106b | 286 | unlock_page(page); |
29b96b54 | 287 | break; |
70c640b1 | 288 | } |
29b96b54 | 289 | |
28bc106b CY |
290 | /* record old blkaddr for revoking */ |
291 | cur->old_addr = fio.old_blkaddr; | |
decd36b6 | 292 | |
28bc106b CY |
293 | clear_cold_data(page); |
294 | submit_bio = true; | |
295 | } | |
296 | unlock_page(page); | |
297 | list_move_tail(&cur->list, revoke_list); | |
88b88a66 | 298 | } |
29b96b54 CY |
299 | |
300 | if (submit_bio) | |
301 | f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, DATA, WRITE); | |
28bc106b CY |
302 | |
303 | if (!err) | |
304 | __revoke_inmem_pages(inode, revoke_list, false, false); | |
305 | ||
29b96b54 CY |
306 | return err; |
307 | } | |
308 | ||
309 | int commit_inmem_pages(struct inode *inode) | |
310 | { | |
311 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
312 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b CY |
313 | struct list_head revoke_list; |
314 | int err; | |
29b96b54 | 315 | |
28bc106b | 316 | INIT_LIST_HEAD(&revoke_list); |
29b96b54 CY |
317 | f2fs_balance_fs(sbi, true); |
318 | f2fs_lock_op(sbi); | |
319 | ||
320 | mutex_lock(&fi->inmem_lock); | |
28bc106b CY |
321 | err = __commit_inmem_pages(inode, &revoke_list); |
322 | if (err) { | |
323 | int ret; | |
324 | /* | |
325 | * try to revoke all committed pages, but still we could fail | |
326 | * due to no memory or other reason, if that happened, EAGAIN | |
327 | * will be returned, which means in such case, transaction is | |
328 | * already not integrity, caller should use journal to do the | |
329 | * recovery or rewrite & commit last transaction. For other | |
330 | * error number, revoking was done by filesystem itself. | |
331 | */ | |
332 | ret = __revoke_inmem_pages(inode, &revoke_list, false, true); | |
333 | if (ret) | |
334 | err = ret; | |
335 | ||
336 | /* drop all uncommitted pages */ | |
337 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
338 | } | |
88b88a66 JK |
339 | mutex_unlock(&fi->inmem_lock); |
340 | ||
29b96b54 | 341 | f2fs_unlock_op(sbi); |
edb27dee | 342 | return err; |
88b88a66 JK |
343 | } |
344 | ||
0a8165d7 | 345 | /* |
351df4b2 JK |
346 | * This function balances dirty node and dentry pages. |
347 | * In addition, it controls garbage collection. | |
348 | */ | |
2c4db1a6 | 349 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 350 | { |
0f348028 CY |
351 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
352 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) | |
353 | f2fs_stop_checkpoint(sbi, false); | |
354 | #endif | |
355 | ||
2c4db1a6 JK |
356 | if (!need) |
357 | return; | |
e589c2c4 JK |
358 | |
359 | /* balance_fs_bg is able to be pending */ | |
360 | if (excess_cached_nats(sbi)) | |
361 | f2fs_balance_fs_bg(sbi); | |
362 | ||
351df4b2 | 363 | /* |
029cd28c JK |
364 | * We should do GC or end up with checkpoint, if there are so many dirty |
365 | * dir/node pages without enough free segments. | |
351df4b2 | 366 | */ |
7f3037a5 | 367 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
351df4b2 | 368 | mutex_lock(&sbi->gc_mutex); |
7702bdbe | 369 | f2fs_gc(sbi, false, false); |
351df4b2 JK |
370 | } |
371 | } | |
372 | ||
4660f9c0 JK |
373 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
374 | { | |
1dcc336b | 375 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
376 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
377 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 378 | |
1b38dc8e JK |
379 | /* check the # of cached NAT entries */ |
380 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
381 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
382 | ||
31696580 | 383 | if (!available_free_memory(sbi, FREE_NIDS)) |
ad4edb83 JK |
384 | try_to_free_nids(sbi, MAX_FREE_NIDS); |
385 | else | |
3a2ad567 | 386 | build_free_nids(sbi, false); |
31696580 | 387 | |
1b38dc8e JK |
388 | /* checkpoint is the only way to shrink partial cached entries */ |
389 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
60b99b48 | 390 | !available_free_memory(sbi, INO_ENTRIES) || |
7d768d2c CY |
391 | excess_prefree_segs(sbi) || |
392 | excess_dirty_nats(sbi) || | |
d0239e1b | 393 | (is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) { |
e9f5b8b8 CY |
394 | if (test_opt(sbi, DATA_FLUSH)) { |
395 | struct blk_plug plug; | |
396 | ||
397 | blk_start_plug(&plug); | |
36b35a0d | 398 | sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 CY |
399 | blk_finish_plug(&plug); |
400 | } | |
4660f9c0 | 401 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 402 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 403 | } |
4660f9c0 JK |
404 | } |
405 | ||
3c62be17 JK |
406 | static int __submit_flush_wait(struct block_device *bdev) |
407 | { | |
408 | struct bio *bio = f2fs_bio_alloc(0); | |
409 | int ret; | |
410 | ||
411 | bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH); | |
412 | bio->bi_bdev = bdev; | |
413 | ret = submit_bio_wait(bio); | |
414 | bio_put(bio); | |
415 | return ret; | |
416 | } | |
417 | ||
418 | static int submit_flush_wait(struct f2fs_sb_info *sbi) | |
419 | { | |
420 | int ret = __submit_flush_wait(sbi->sb->s_bdev); | |
421 | int i; | |
422 | ||
423 | if (sbi->s_ndevs && !ret) { | |
424 | for (i = 1; i < sbi->s_ndevs; i++) { | |
425 | ret = __submit_flush_wait(FDEV(i).bdev); | |
426 | if (ret) | |
427 | break; | |
428 | } | |
429 | } | |
430 | return ret; | |
431 | } | |
432 | ||
2163d198 | 433 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
434 | { |
435 | struct f2fs_sb_info *sbi = data; | |
a688b9d9 GZ |
436 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
437 | wait_queue_head_t *q = &fcc->flush_wait_queue; | |
6b4afdd7 JK |
438 | repeat: |
439 | if (kthread_should_stop()) | |
440 | return 0; | |
441 | ||
721bd4d5 | 442 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
443 | struct flush_cmd *cmd, *next; |
444 | int ret; | |
445 | ||
721bd4d5 GZ |
446 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
447 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
448 | ||
3c62be17 | 449 | ret = submit_flush_wait(sbi); |
721bd4d5 GZ |
450 | llist_for_each_entry_safe(cmd, next, |
451 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 452 | cmd->ret = ret; |
6b4afdd7 JK |
453 | complete(&cmd->wait); |
454 | } | |
a688b9d9 | 455 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
456 | } |
457 | ||
a688b9d9 | 458 | wait_event_interruptible(*q, |
721bd4d5 | 459 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
460 | goto repeat; |
461 | } | |
462 | ||
463 | int f2fs_issue_flush(struct f2fs_sb_info *sbi) | |
464 | { | |
a688b9d9 | 465 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
adf8d90b | 466 | struct flush_cmd cmd; |
6b4afdd7 | 467 | |
24a9ee0f JK |
468 | trace_f2fs_issue_flush(sbi->sb, test_opt(sbi, NOBARRIER), |
469 | test_opt(sbi, FLUSH_MERGE)); | |
470 | ||
0f7b2abd JK |
471 | if (test_opt(sbi, NOBARRIER)) |
472 | return 0; | |
473 | ||
0a87f664 | 474 | if (!test_opt(sbi, FLUSH_MERGE) || !atomic_read(&fcc->submit_flush)) { |
740432f8 JK |
475 | int ret; |
476 | ||
0a87f664 | 477 | atomic_inc(&fcc->submit_flush); |
3c62be17 | 478 | ret = submit_flush_wait(sbi); |
0a87f664 | 479 | atomic_dec(&fcc->submit_flush); |
740432f8 JK |
480 | return ret; |
481 | } | |
6b4afdd7 | 482 | |
adf8d90b | 483 | init_completion(&cmd.wait); |
6b4afdd7 | 484 | |
0a87f664 | 485 | atomic_inc(&fcc->submit_flush); |
721bd4d5 | 486 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 487 | |
a688b9d9 GZ |
488 | if (!fcc->dispatch_list) |
489 | wake_up(&fcc->flush_wait_queue); | |
6b4afdd7 | 490 | |
adf8d90b | 491 | wait_for_completion(&cmd.wait); |
0a87f664 | 492 | atomic_dec(&fcc->submit_flush); |
adf8d90b CY |
493 | |
494 | return cmd.ret; | |
6b4afdd7 JK |
495 | } |
496 | ||
2163d198 GZ |
497 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
498 | { | |
499 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
500 | struct flush_cmd_control *fcc; | |
501 | int err = 0; | |
502 | ||
503 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); | |
504 | if (!fcc) | |
505 | return -ENOMEM; | |
0a87f664 | 506 | atomic_set(&fcc->submit_flush, 0); |
2163d198 | 507 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 508 | init_llist_head(&fcc->issue_list); |
6b2920a5 | 509 | SM_I(sbi)->cmd_control_info = fcc; |
2163d198 GZ |
510 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
511 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
512 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
513 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
514 | kfree(fcc); | |
6b2920a5 | 515 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
516 | return err; |
517 | } | |
2163d198 GZ |
518 | |
519 | return err; | |
520 | } | |
521 | ||
522 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi) | |
523 | { | |
6b2920a5 | 524 | struct flush_cmd_control *fcc = SM_I(sbi)->cmd_control_info; |
2163d198 GZ |
525 | |
526 | if (fcc && fcc->f2fs_issue_flush) | |
527 | kthread_stop(fcc->f2fs_issue_flush); | |
528 | kfree(fcc); | |
6b2920a5 | 529 | SM_I(sbi)->cmd_control_info = NULL; |
2163d198 GZ |
530 | } |
531 | ||
351df4b2 JK |
532 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
533 | enum dirty_type dirty_type) | |
534 | { | |
535 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
536 | ||
537 | /* need not be added */ | |
538 | if (IS_CURSEG(sbi, segno)) | |
539 | return; | |
540 | ||
541 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
542 | dirty_i->nr_dirty[dirty_type]++; | |
543 | ||
544 | if (dirty_type == DIRTY) { | |
545 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 546 | enum dirty_type t = sentry->type; |
b2f2c390 | 547 | |
ec325b52 JK |
548 | if (unlikely(t >= DIRTY)) { |
549 | f2fs_bug_on(sbi, 1); | |
550 | return; | |
551 | } | |
4625d6aa CL |
552 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
553 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
554 | } |
555 | } | |
556 | ||
557 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
558 | enum dirty_type dirty_type) | |
559 | { | |
560 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
561 | ||
562 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
563 | dirty_i->nr_dirty[dirty_type]--; | |
564 | ||
565 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
566 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
567 | enum dirty_type t = sentry->type; | |
568 | ||
569 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
570 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 571 | |
5ec4e49f JK |
572 | if (get_valid_blocks(sbi, segno, sbi->segs_per_sec) == 0) |
573 | clear_bit(GET_SECNO(sbi, segno), | |
574 | dirty_i->victim_secmap); | |
351df4b2 JK |
575 | } |
576 | } | |
577 | ||
0a8165d7 | 578 | /* |
351df4b2 JK |
579 | * Should not occur error such as -ENOMEM. |
580 | * Adding dirty entry into seglist is not critical operation. | |
581 | * If a given segment is one of current working segments, it won't be added. | |
582 | */ | |
8d8451af | 583 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
584 | { |
585 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
586 | unsigned short valid_blocks; | |
587 | ||
588 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
589 | return; | |
590 | ||
591 | mutex_lock(&dirty_i->seglist_lock); | |
592 | ||
593 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
594 | ||
595 | if (valid_blocks == 0) { | |
596 | __locate_dirty_segment(sbi, segno, PRE); | |
597 | __remove_dirty_segment(sbi, segno, DIRTY); | |
598 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
599 | __locate_dirty_segment(sbi, segno, DIRTY); | |
600 | } else { | |
601 | /* Recovery routine with SSR needs this */ | |
602 | __remove_dirty_segment(sbi, segno, DIRTY); | |
603 | } | |
604 | ||
605 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
606 | } |
607 | ||
275b66b0 CY |
608 | static struct bio_entry *__add_bio_entry(struct f2fs_sb_info *sbi, |
609 | struct bio *bio) | |
610 | { | |
611 | struct list_head *wait_list = &(SM_I(sbi)->wait_list); | |
612 | struct bio_entry *be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS); | |
613 | ||
614 | INIT_LIST_HEAD(&be->list); | |
615 | be->bio = bio; | |
616 | init_completion(&be->event); | |
617 | list_add_tail(&be->list, wait_list); | |
618 | ||
619 | return be; | |
620 | } | |
621 | ||
622 | void f2fs_wait_all_discard_bio(struct f2fs_sb_info *sbi) | |
623 | { | |
624 | struct list_head *wait_list = &(SM_I(sbi)->wait_list); | |
625 | struct bio_entry *be, *tmp; | |
626 | ||
627 | list_for_each_entry_safe(be, tmp, wait_list, list) { | |
628 | struct bio *bio = be->bio; | |
629 | int err; | |
630 | ||
631 | wait_for_completion_io(&be->event); | |
632 | err = be->error; | |
633 | if (err == -EOPNOTSUPP) | |
634 | err = 0; | |
635 | ||
636 | if (err) | |
637 | f2fs_msg(sbi->sb, KERN_INFO, | |
638 | "Issue discard failed, ret: %d", err); | |
639 | ||
640 | bio_put(bio); | |
641 | list_del(&be->list); | |
642 | kmem_cache_free(bio_entry_slab, be); | |
643 | } | |
644 | } | |
645 | ||
646 | static void f2fs_submit_bio_wait_endio(struct bio *bio) | |
647 | { | |
648 | struct bio_entry *be = (struct bio_entry *)bio->bi_private; | |
649 | ||
650 | be->error = bio->bi_error; | |
651 | complete(&be->event); | |
652 | } | |
653 | ||
654 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ | |
f46e8809 | 655 | static int __f2fs_issue_discard_async(struct f2fs_sb_info *sbi, |
3c62be17 | 656 | struct block_device *bdev, block_t blkstart, block_t blklen) |
275b66b0 | 657 | { |
275b66b0 CY |
658 | struct bio *bio = NULL; |
659 | int err; | |
660 | ||
f46e8809 DLM |
661 | trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); |
662 | ||
3c62be17 JK |
663 | if (sbi->s_ndevs) { |
664 | int devi = f2fs_target_device_index(sbi, blkstart); | |
665 | ||
666 | blkstart -= FDEV(devi).start_blk; | |
667 | } | |
f46e8809 DLM |
668 | err = __blkdev_issue_discard(bdev, |
669 | SECTOR_FROM_BLOCK(blkstart), | |
670 | SECTOR_FROM_BLOCK(blklen), | |
671 | GFP_NOFS, 0, &bio); | |
275b66b0 CY |
672 | if (!err && bio) { |
673 | struct bio_entry *be = __add_bio_entry(sbi, bio); | |
674 | ||
675 | bio->bi_private = be; | |
676 | bio->bi_end_io = f2fs_submit_bio_wait_endio; | |
677 | bio->bi_opf |= REQ_SYNC; | |
678 | submit_bio(bio); | |
679 | } | |
680 | ||
681 | return err; | |
682 | } | |
683 | ||
f46e8809 | 684 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 JK |
685 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
686 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
f46e8809 | 687 | { |
f46e8809 | 688 | sector_t nr_sects = SECTOR_FROM_BLOCK(blklen); |
3c62be17 JK |
689 | sector_t sector; |
690 | int devi = 0; | |
691 | ||
692 | if (sbi->s_ndevs) { | |
693 | devi = f2fs_target_device_index(sbi, blkstart); | |
694 | blkstart -= FDEV(devi).start_blk; | |
695 | } | |
696 | sector = SECTOR_FROM_BLOCK(blkstart); | |
f46e8809 | 697 | |
3c62be17 | 698 | if (sector % bdev_zone_size(bdev) || nr_sects != bdev_zone_size(bdev)) { |
f46e8809 | 699 | f2fs_msg(sbi->sb, KERN_INFO, |
3c62be17 JK |
700 | "(%d) %s: Unaligned discard attempted (block %x + %x)", |
701 | devi, sbi->s_ndevs ? FDEV(devi).path: "", | |
702 | blkstart, blklen); | |
f46e8809 DLM |
703 | return -EIO; |
704 | } | |
705 | ||
706 | /* | |
707 | * We need to know the type of the zone: for conventional zones, | |
708 | * use regular discard if the drive supports it. For sequential | |
709 | * zones, reset the zone write pointer. | |
710 | */ | |
3c62be17 | 711 | switch (get_blkz_type(sbi, bdev, blkstart)) { |
f46e8809 DLM |
712 | |
713 | case BLK_ZONE_TYPE_CONVENTIONAL: | |
714 | if (!blk_queue_discard(bdev_get_queue(bdev))) | |
715 | return 0; | |
3c62be17 | 716 | return __f2fs_issue_discard_async(sbi, bdev, blkstart, blklen); |
f46e8809 DLM |
717 | case BLK_ZONE_TYPE_SEQWRITE_REQ: |
718 | case BLK_ZONE_TYPE_SEQWRITE_PREF: | |
126606c7 | 719 | trace_f2fs_issue_reset_zone(sbi->sb, blkstart); |
f46e8809 DLM |
720 | return blkdev_reset_zones(bdev, sector, |
721 | nr_sects, GFP_NOFS); | |
722 | default: | |
723 | /* Unknown zone type: broken device ? */ | |
724 | return -EIO; | |
725 | } | |
726 | } | |
727 | #endif | |
728 | ||
3c62be17 JK |
729 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
730 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
731 | { | |
732 | #ifdef CONFIG_BLK_DEV_ZONED | |
733 | if (f2fs_sb_mounted_blkzoned(sbi->sb) && | |
734 | bdev_zoned_model(bdev) != BLK_ZONED_NONE) | |
735 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); | |
736 | #endif | |
737 | return __f2fs_issue_discard_async(sbi, bdev, blkstart, blklen); | |
738 | } | |
739 | ||
1e87a78d | 740 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
741 | block_t blkstart, block_t blklen) |
742 | { | |
3c62be17 JK |
743 | sector_t start = blkstart, len = 0; |
744 | struct block_device *bdev; | |
a66cdd98 JK |
745 | struct seg_entry *se; |
746 | unsigned int offset; | |
747 | block_t i; | |
3c62be17 JK |
748 | int err = 0; |
749 | ||
750 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
751 | ||
752 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
753 | if (i != start) { | |
754 | struct block_device *bdev2 = | |
755 | f2fs_target_device(sbi, i, NULL); | |
756 | ||
757 | if (bdev2 != bdev) { | |
758 | err = __issue_discard_async(sbi, bdev, | |
759 | start, len); | |
760 | if (err) | |
761 | return err; | |
762 | bdev = bdev2; | |
763 | start = i; | |
764 | len = 0; | |
765 | } | |
766 | } | |
a66cdd98 | 767 | |
a66cdd98 JK |
768 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
769 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
770 | ||
771 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
772 | sbi->discard_blks--; | |
773 | } | |
f46e8809 | 774 | |
3c62be17 JK |
775 | if (len) |
776 | err = __issue_discard_async(sbi, bdev, start, len); | |
777 | return err; | |
1e87a78d JK |
778 | } |
779 | ||
adf4983b | 780 | static void __add_discard_entry(struct f2fs_sb_info *sbi, |
a66cdd98 JK |
781 | struct cp_control *cpc, struct seg_entry *se, |
782 | unsigned int start, unsigned int end) | |
b2955550 JK |
783 | { |
784 | struct list_head *head = &SM_I(sbi)->discard_list; | |
adf4983b JK |
785 | struct discard_entry *new, *last; |
786 | ||
787 | if (!list_empty(head)) { | |
788 | last = list_last_entry(head, struct discard_entry, list); | |
789 | if (START_BLOCK(sbi, cpc->trim_start) + start == | |
790 | last->blkaddr + last->len) { | |
791 | last->len += end - start; | |
792 | goto done; | |
793 | } | |
794 | } | |
795 | ||
796 | new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); | |
797 | INIT_LIST_HEAD(&new->list); | |
798 | new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; | |
799 | new->len = end - start; | |
800 | list_add_tail(&new->list, head); | |
801 | done: | |
802 | SM_I(sbi)->nr_discards += end - start; | |
adf4983b JK |
803 | } |
804 | ||
805 | static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) | |
806 | { | |
b2955550 JK |
807 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
808 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 809 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
810 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
811 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 812 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 813 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 814 | unsigned int start = 0, end = -1; |
4b2fecc8 | 815 | bool force = (cpc->reason == CP_DISCARD); |
b2955550 JK |
816 | int i; |
817 | ||
3e025740 | 818 | if (se->valid_blocks == max_blocks || !f2fs_discard_en(sbi)) |
b2955550 JK |
819 | return; |
820 | ||
a66cdd98 JK |
821 | if (!force) { |
822 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
912a83b5 DC |
823 | SM_I(sbi)->nr_discards >= SM_I(sbi)->max_discards) |
824 | return; | |
4b2fecc8 JK |
825 | } |
826 | ||
b2955550 JK |
827 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
828 | for (i = 0; i < entries; i++) | |
a66cdd98 | 829 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 830 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 831 | |
4b2fecc8 | 832 | while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { |
b2955550 JK |
833 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
834 | if (start >= max_blocks) | |
835 | break; | |
836 | ||
837 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c7b41e16 YH |
838 | if (force && start && end != max_blocks |
839 | && (end - start) < cpc->trim_minlen) | |
840 | continue; | |
841 | ||
a66cdd98 | 842 | __add_discard_entry(sbi, cpc, se, start, end); |
b2955550 JK |
843 | } |
844 | } | |
845 | ||
4b2fecc8 JK |
846 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
847 | { | |
848 | struct list_head *head = &(SM_I(sbi)->discard_list); | |
849 | struct discard_entry *entry, *this; | |
850 | ||
851 | /* drop caches */ | |
852 | list_for_each_entry_safe(entry, this, head, list) { | |
853 | list_del(&entry->list); | |
854 | kmem_cache_free(discard_entry_slab, entry); | |
855 | } | |
856 | } | |
857 | ||
0a8165d7 | 858 | /* |
351df4b2 JK |
859 | * Should call clear_prefree_segments after checkpoint is done. |
860 | */ | |
861 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
862 | { | |
863 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 864 | unsigned int segno; |
351df4b2 JK |
865 | |
866 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 867 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 868 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
869 | mutex_unlock(&dirty_i->seglist_lock); |
870 | } | |
871 | ||
836b5a63 | 872 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 873 | { |
b2955550 | 874 | struct list_head *head = &(SM_I(sbi)->discard_list); |
2d7b822a | 875 | struct discard_entry *entry, *this; |
351df4b2 | 876 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
275b66b0 | 877 | struct blk_plug plug; |
29e59c14 | 878 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 879 | unsigned int start = 0, end = -1; |
36abef4e | 880 | unsigned int secno, start_segno; |
c24a0fd6 | 881 | bool force = (cpc->reason == CP_DISCARD); |
351df4b2 | 882 | |
275b66b0 CY |
883 | blk_start_plug(&plug); |
884 | ||
351df4b2 | 885 | mutex_lock(&dirty_i->seglist_lock); |
29e59c14 | 886 | |
351df4b2 | 887 | while (1) { |
29e59c14 | 888 | int i; |
7cd8558b JK |
889 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
890 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 891 | break; |
7cd8558b JK |
892 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
893 | start + 1); | |
29e59c14 CL |
894 | |
895 | for (i = start; i < end; i++) | |
896 | clear_bit(i, prefree_map); | |
897 | ||
898 | dirty_i->nr_dirty[PRE] -= end - start; | |
899 | ||
c24a0fd6 | 900 | if (force || !test_opt(sbi, DISCARD)) |
29e59c14 | 901 | continue; |
351df4b2 | 902 | |
36abef4e JK |
903 | if (!test_opt(sbi, LFS) || sbi->segs_per_sec == 1) { |
904 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), | |
37208879 | 905 | (end - start) << sbi->log_blocks_per_seg); |
36abef4e JK |
906 | continue; |
907 | } | |
908 | next: | |
909 | secno = GET_SECNO(sbi, start); | |
910 | start_segno = secno * sbi->segs_per_sec; | |
911 | if (!IS_CURSEC(sbi, secno) && | |
912 | !get_valid_blocks(sbi, start, sbi->segs_per_sec)) | |
913 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), | |
914 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
915 | ||
916 | start = start_segno + sbi->segs_per_sec; | |
917 | if (start < end) | |
918 | goto next; | |
351df4b2 JK |
919 | } |
920 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
921 | |
922 | /* send small discards */ | |
2d7b822a | 923 | list_for_each_entry_safe(entry, this, head, list) { |
c24a0fd6 | 924 | if (force && entry->len < cpc->trim_minlen) |
836b5a63 | 925 | goto skip; |
37208879 | 926 | f2fs_issue_discard(sbi, entry->blkaddr, entry->len); |
f56aa1c5 | 927 | cpc->trimmed += entry->len; |
836b5a63 | 928 | skip: |
b2955550 JK |
929 | list_del(&entry->list); |
930 | SM_I(sbi)->nr_discards -= entry->len; | |
931 | kmem_cache_free(discard_entry_slab, entry); | |
932 | } | |
275b66b0 CY |
933 | |
934 | blk_finish_plug(&plug); | |
351df4b2 JK |
935 | } |
936 | ||
184a5cd2 | 937 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
938 | { |
939 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
940 | |
941 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 942 | sit_i->dirty_sentries++; |
184a5cd2 CY |
943 | return false; |
944 | } | |
945 | ||
946 | return true; | |
351df4b2 JK |
947 | } |
948 | ||
949 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
950 | unsigned int segno, int modified) | |
951 | { | |
952 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
953 | se->type = type; | |
954 | if (modified) | |
955 | __mark_sit_entry_dirty(sbi, segno); | |
956 | } | |
957 | ||
958 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
959 | { | |
960 | struct seg_entry *se; | |
961 | unsigned int segno, offset; | |
962 | long int new_vblocks; | |
963 | ||
964 | segno = GET_SEGNO(sbi, blkaddr); | |
965 | ||
966 | se = get_seg_entry(sbi, segno); | |
967 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 968 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 969 | |
9850cf4a | 970 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
971 | (new_vblocks > sbi->blocks_per_seg))); |
972 | ||
973 | se->valid_blocks = new_vblocks; | |
974 | se->mtime = get_mtime(sbi); | |
975 | SIT_I(sbi)->max_mtime = se->mtime; | |
976 | ||
977 | /* Update valid block bitmap */ | |
978 | if (del > 0) { | |
52aca074 | 979 | if (f2fs_test_and_set_bit(offset, se->cur_valid_map)) |
05796763 | 980 | f2fs_bug_on(sbi, 1); |
3e025740 JK |
981 | if (f2fs_discard_en(sbi) && |
982 | !f2fs_test_and_set_bit(offset, se->discard_map)) | |
a66cdd98 | 983 | sbi->discard_blks--; |
351df4b2 | 984 | } else { |
52aca074 | 985 | if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) |
05796763 | 986 | f2fs_bug_on(sbi, 1); |
3e025740 JK |
987 | if (f2fs_discard_en(sbi) && |
988 | f2fs_test_and_clear_bit(offset, se->discard_map)) | |
a66cdd98 | 989 | sbi->discard_blks++; |
351df4b2 JK |
990 | } |
991 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
992 | se->ckpt_valid_blocks += del; | |
993 | ||
994 | __mark_sit_entry_dirty(sbi, segno); | |
995 | ||
996 | /* update total number of valid blocks to be written in ckpt area */ | |
997 | SIT_I(sbi)->written_valid_blocks += del; | |
998 | ||
999 | if (sbi->segs_per_sec > 1) | |
1000 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
1001 | } | |
1002 | ||
5e443818 | 1003 | void refresh_sit_entry(struct f2fs_sb_info *sbi, block_t old, block_t new) |
351df4b2 | 1004 | { |
5e443818 JK |
1005 | update_sit_entry(sbi, new, 1); |
1006 | if (GET_SEGNO(sbi, old) != NULL_SEGNO) | |
1007 | update_sit_entry(sbi, old, -1); | |
1008 | ||
1009 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old)); | |
1010 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new)); | |
351df4b2 JK |
1011 | } |
1012 | ||
1013 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) | |
1014 | { | |
1015 | unsigned int segno = GET_SEGNO(sbi, addr); | |
1016 | struct sit_info *sit_i = SIT_I(sbi); | |
1017 | ||
9850cf4a | 1018 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
1019 | if (addr == NEW_ADDR) |
1020 | return; | |
1021 | ||
1022 | /* add it into sit main buffer */ | |
1023 | mutex_lock(&sit_i->sentry_lock); | |
1024 | ||
1025 | update_sit_entry(sbi, addr, -1); | |
1026 | ||
1027 | /* add it into dirty seglist */ | |
1028 | locate_dirty_segment(sbi, segno); | |
1029 | ||
1030 | mutex_unlock(&sit_i->sentry_lock); | |
1031 | } | |
1032 | ||
6e2c64ad JK |
1033 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
1034 | { | |
1035 | struct sit_info *sit_i = SIT_I(sbi); | |
1036 | unsigned int segno, offset; | |
1037 | struct seg_entry *se; | |
1038 | bool is_cp = false; | |
1039 | ||
1040 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) | |
1041 | return true; | |
1042 | ||
1043 | mutex_lock(&sit_i->sentry_lock); | |
1044 | ||
1045 | segno = GET_SEGNO(sbi, blkaddr); | |
1046 | se = get_seg_entry(sbi, segno); | |
1047 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
1048 | ||
1049 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
1050 | is_cp = true; | |
1051 | ||
1052 | mutex_unlock(&sit_i->sentry_lock); | |
1053 | ||
1054 | return is_cp; | |
1055 | } | |
1056 | ||
0a8165d7 | 1057 | /* |
351df4b2 JK |
1058 | * This function should be resided under the curseg_mutex lock |
1059 | */ | |
1060 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 1061 | struct f2fs_summary *sum) |
351df4b2 JK |
1062 | { |
1063 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1064 | void *addr = curseg->sum_blk; | |
e79efe3b | 1065 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 1066 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
1067 | } |
1068 | ||
0a8165d7 | 1069 | /* |
351df4b2 JK |
1070 | * Calculate the number of current summary pages for writing |
1071 | */ | |
3fa06d7b | 1072 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 1073 | { |
351df4b2 | 1074 | int valid_sum_count = 0; |
9a47938b | 1075 | int i, sum_in_page; |
351df4b2 JK |
1076 | |
1077 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1078 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1079 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
1080 | else { |
1081 | if (for_ra) | |
1082 | valid_sum_count += le16_to_cpu( | |
1083 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
1084 | else | |
1085 | valid_sum_count += curseg_blkoff(sbi, i); | |
1086 | } | |
351df4b2 JK |
1087 | } |
1088 | ||
09cbfeaf | 1089 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
1090 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
1091 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 1092 | return 1; |
9a47938b | 1093 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 1094 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
1095 | return 2; |
1096 | return 3; | |
1097 | } | |
1098 | ||
0a8165d7 | 1099 | /* |
351df4b2 JK |
1100 | * Caller should put this summary page |
1101 | */ | |
1102 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
1103 | { | |
1104 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
1105 | } | |
1106 | ||
381722d2 | 1107 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
1108 | { |
1109 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 CY |
1110 | void *dst = page_address(page); |
1111 | ||
1112 | if (src) | |
09cbfeaf | 1113 | memcpy(dst, src, PAGE_SIZE); |
381722d2 | 1114 | else |
09cbfeaf | 1115 | memset(dst, 0, PAGE_SIZE); |
351df4b2 JK |
1116 | set_page_dirty(page); |
1117 | f2fs_put_page(page, 1); | |
1118 | } | |
1119 | ||
381722d2 CY |
1120 | static void write_sum_page(struct f2fs_sb_info *sbi, |
1121 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
1122 | { | |
1123 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
1124 | } | |
1125 | ||
b7ad7512 CY |
1126 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
1127 | int type, block_t blk_addr) | |
1128 | { | |
1129 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1130 | struct page *page = grab_meta_page(sbi, blk_addr); | |
1131 | struct f2fs_summary_block *src = curseg->sum_blk; | |
1132 | struct f2fs_summary_block *dst; | |
1133 | ||
1134 | dst = (struct f2fs_summary_block *)page_address(page); | |
1135 | ||
1136 | mutex_lock(&curseg->curseg_mutex); | |
1137 | ||
1138 | down_read(&curseg->journal_rwsem); | |
1139 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
1140 | up_read(&curseg->journal_rwsem); | |
1141 | ||
1142 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
1143 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
1144 | ||
1145 | mutex_unlock(&curseg->curseg_mutex); | |
1146 | ||
1147 | set_page_dirty(page); | |
1148 | f2fs_put_page(page, 1); | |
1149 | } | |
1150 | ||
60374688 JK |
1151 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
1152 | { | |
1153 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
81fb5e87 | 1154 | unsigned int segno = curseg->segno + 1; |
60374688 JK |
1155 | struct free_segmap_info *free_i = FREE_I(sbi); |
1156 | ||
7cd8558b | 1157 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) |
81fb5e87 | 1158 | return !test_bit(segno, free_i->free_segmap); |
60374688 JK |
1159 | return 0; |
1160 | } | |
1161 | ||
0a8165d7 | 1162 | /* |
351df4b2 JK |
1163 | * Find a new segment from the free segments bitmap to right order |
1164 | * This function should be returned with success, otherwise BUG | |
1165 | */ | |
1166 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
1167 | unsigned int *newseg, bool new_sec, int dir) | |
1168 | { | |
1169 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 1170 | unsigned int segno, secno, zoneno; |
7cd8558b | 1171 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
351df4b2 JK |
1172 | unsigned int hint = *newseg / sbi->segs_per_sec; |
1173 | unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); | |
1174 | unsigned int left_start = hint; | |
1175 | bool init = true; | |
1176 | int go_left = 0; | |
1177 | int i; | |
1178 | ||
1a118ccf | 1179 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
1180 | |
1181 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
1182 | segno = find_next_zero_bit(free_i->free_segmap, | |
0ab14356 CY |
1183 | (hint + 1) * sbi->segs_per_sec, *newseg + 1); |
1184 | if (segno < (hint + 1) * sbi->segs_per_sec) | |
351df4b2 JK |
1185 | goto got_it; |
1186 | } | |
1187 | find_other_zone: | |
7cd8558b JK |
1188 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
1189 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
1190 | if (dir == ALLOC_RIGHT) { |
1191 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
1192 | MAIN_SECS(sbi), 0); |
1193 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
1194 | } else { |
1195 | go_left = 1; | |
1196 | left_start = hint - 1; | |
1197 | } | |
1198 | } | |
1199 | if (go_left == 0) | |
1200 | goto skip_left; | |
1201 | ||
1202 | while (test_bit(left_start, free_i->free_secmap)) { | |
1203 | if (left_start > 0) { | |
1204 | left_start--; | |
1205 | continue; | |
1206 | } | |
1207 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
1208 | MAIN_SECS(sbi), 0); |
1209 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
1210 | break; |
1211 | } | |
1212 | secno = left_start; | |
1213 | skip_left: | |
1214 | hint = secno; | |
1215 | segno = secno * sbi->segs_per_sec; | |
1216 | zoneno = secno / sbi->secs_per_zone; | |
1217 | ||
1218 | /* give up on finding another zone */ | |
1219 | if (!init) | |
1220 | goto got_it; | |
1221 | if (sbi->secs_per_zone == 1) | |
1222 | goto got_it; | |
1223 | if (zoneno == old_zoneno) | |
1224 | goto got_it; | |
1225 | if (dir == ALLOC_LEFT) { | |
1226 | if (!go_left && zoneno + 1 >= total_zones) | |
1227 | goto got_it; | |
1228 | if (go_left && zoneno == 0) | |
1229 | goto got_it; | |
1230 | } | |
1231 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
1232 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
1233 | break; | |
1234 | ||
1235 | if (i < NR_CURSEG_TYPE) { | |
1236 | /* zone is in user, try another */ | |
1237 | if (go_left) | |
1238 | hint = zoneno * sbi->secs_per_zone - 1; | |
1239 | else if (zoneno + 1 >= total_zones) | |
1240 | hint = 0; | |
1241 | else | |
1242 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
1243 | init = false; | |
1244 | goto find_other_zone; | |
1245 | } | |
1246 | got_it: | |
1247 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 1248 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
1249 | __set_inuse(sbi, segno); |
1250 | *newseg = segno; | |
1a118ccf | 1251 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
1252 | } |
1253 | ||
1254 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
1255 | { | |
1256 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1257 | struct summary_footer *sum_footer; | |
1258 | ||
1259 | curseg->segno = curseg->next_segno; | |
1260 | curseg->zone = GET_ZONENO_FROM_SEGNO(sbi, curseg->segno); | |
1261 | curseg->next_blkoff = 0; | |
1262 | curseg->next_segno = NULL_SEGNO; | |
1263 | ||
1264 | sum_footer = &(curseg->sum_blk->footer); | |
1265 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
1266 | if (IS_DATASEG(type)) | |
1267 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
1268 | if (IS_NODESEG(type)) | |
1269 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
1270 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
1271 | } | |
1272 | ||
0a8165d7 | 1273 | /* |
351df4b2 JK |
1274 | * Allocate a current working segment. |
1275 | * This function always allocates a free segment in LFS manner. | |
1276 | */ | |
1277 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
1278 | { | |
1279 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1280 | unsigned int segno = curseg->segno; | |
1281 | int dir = ALLOC_LEFT; | |
1282 | ||
1283 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 1284 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
1285 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
1286 | dir = ALLOC_RIGHT; | |
1287 | ||
1288 | if (test_opt(sbi, NOHEAP)) | |
1289 | dir = ALLOC_RIGHT; | |
1290 | ||
1291 | get_new_segment(sbi, &segno, new_sec, dir); | |
1292 | curseg->next_segno = segno; | |
1293 | reset_curseg(sbi, type, 1); | |
1294 | curseg->alloc_type = LFS; | |
1295 | } | |
1296 | ||
1297 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
1298 | struct curseg_info *seg, block_t start) | |
1299 | { | |
1300 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 1301 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 1302 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
1303 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
1304 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
1305 | int i, pos; | |
1306 | ||
1307 | for (i = 0; i < entries; i++) | |
1308 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
1309 | ||
1310 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
1311 | ||
1312 | seg->next_blkoff = pos; | |
351df4b2 JK |
1313 | } |
1314 | ||
0a8165d7 | 1315 | /* |
351df4b2 JK |
1316 | * If a segment is written by LFS manner, next block offset is just obtained |
1317 | * by increasing the current block offset. However, if a segment is written by | |
1318 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
1319 | */ | |
1320 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
1321 | struct curseg_info *seg) | |
1322 | { | |
1323 | if (seg->alloc_type == SSR) | |
1324 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
1325 | else | |
1326 | seg->next_blkoff++; | |
1327 | } | |
1328 | ||
0a8165d7 | 1329 | /* |
e1c42045 | 1330 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
1331 | * manner, so it should recover the existing segment information of valid blocks |
1332 | */ | |
1333 | static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) | |
1334 | { | |
1335 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
1336 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1337 | unsigned int new_segno = curseg->next_segno; | |
1338 | struct f2fs_summary_block *sum_node; | |
1339 | struct page *sum_page; | |
1340 | ||
1341 | write_sum_page(sbi, curseg->sum_blk, | |
1342 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
1343 | __set_test_and_inuse(sbi, new_segno); | |
1344 | ||
1345 | mutex_lock(&dirty_i->seglist_lock); | |
1346 | __remove_dirty_segment(sbi, new_segno, PRE); | |
1347 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
1348 | mutex_unlock(&dirty_i->seglist_lock); | |
1349 | ||
1350 | reset_curseg(sbi, type, 1); | |
1351 | curseg->alloc_type = SSR; | |
1352 | __next_free_blkoff(sbi, curseg, 0); | |
1353 | ||
1354 | if (reuse) { | |
1355 | sum_page = get_sum_page(sbi, new_segno); | |
1356 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
1357 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
1358 | f2fs_put_page(sum_page, 1); | |
1359 | } | |
1360 | } | |
1361 | ||
43727527 JK |
1362 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
1363 | { | |
1364 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1365 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
1366 | ||
7f3037a5 | 1367 | if (IS_NODESEG(type) || !has_not_enough_free_secs(sbi, 0, 0)) |
43727527 JK |
1368 | return v_ops->get_victim(sbi, |
1369 | &(curseg)->next_segno, BG_GC, type, SSR); | |
1370 | ||
1371 | /* For data segments, let's do SSR more intensively */ | |
1372 | for (; type >= CURSEG_HOT_DATA; type--) | |
1373 | if (v_ops->get_victim(sbi, &(curseg)->next_segno, | |
1374 | BG_GC, type, SSR)) | |
1375 | return 1; | |
1376 | return 0; | |
1377 | } | |
1378 | ||
351df4b2 JK |
1379 | /* |
1380 | * flush out current segment and replace it with new segment | |
1381 | * This function should be returned with success, otherwise BUG | |
1382 | */ | |
1383 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
1384 | int type, bool force) | |
1385 | { | |
1386 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
351df4b2 | 1387 | |
7b405275 | 1388 | if (force) |
351df4b2 | 1389 | new_curseg(sbi, type, true); |
7b405275 | 1390 | else if (type == CURSEG_WARM_NODE) |
351df4b2 | 1391 | new_curseg(sbi, type, false); |
60374688 JK |
1392 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
1393 | new_curseg(sbi, type, false); | |
351df4b2 JK |
1394 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
1395 | change_curseg(sbi, type, true); | |
1396 | else | |
1397 | new_curseg(sbi, type, false); | |
dcdfff65 JK |
1398 | |
1399 | stat_inc_seg_type(sbi, curseg); | |
351df4b2 JK |
1400 | } |
1401 | ||
1402 | void allocate_new_segments(struct f2fs_sb_info *sbi) | |
1403 | { | |
6ae1be13 JK |
1404 | struct curseg_info *curseg; |
1405 | unsigned int old_segno; | |
351df4b2 JK |
1406 | int i; |
1407 | ||
36abef4e JK |
1408 | if (test_opt(sbi, LFS)) |
1409 | return; | |
1410 | ||
6ae1be13 JK |
1411 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
1412 | curseg = CURSEG_I(sbi, i); | |
1413 | old_segno = curseg->segno; | |
1414 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
1415 | locate_dirty_segment(sbi, old_segno); | |
1416 | } | |
351df4b2 JK |
1417 | } |
1418 | ||
1419 | static const struct segment_allocation default_salloc_ops = { | |
1420 | .allocate_segment = allocate_segment_by_default, | |
1421 | }; | |
1422 | ||
4b2fecc8 JK |
1423 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
1424 | { | |
f7ef9b83 JK |
1425 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
1426 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
4b2fecc8 JK |
1427 | unsigned int start_segno, end_segno; |
1428 | struct cp_control cpc; | |
c34f42e2 | 1429 | int err = 0; |
4b2fecc8 | 1430 | |
836b5a63 | 1431 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
1432 | return -EINVAL; |
1433 | ||
9bd27ae4 | 1434 | cpc.trimmed = 0; |
7cd8558b | 1435 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
1436 | goto out; |
1437 | ||
ed214a11 YH |
1438 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
1439 | f2fs_msg(sbi->sb, KERN_WARNING, | |
1440 | "Found FS corruption, run fsck to fix."); | |
1441 | goto out; | |
1442 | } | |
1443 | ||
4b2fecc8 | 1444 | /* start/end segment number in main_area */ |
7cd8558b JK |
1445 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
1446 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
1447 | GET_SEGNO(sbi, end); | |
4b2fecc8 | 1448 | cpc.reason = CP_DISCARD; |
836b5a63 | 1449 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
1450 | |
1451 | /* do checkpoint to issue discard commands safely */ | |
bba681cb JK |
1452 | for (; start_segno <= end_segno; start_segno = cpc.trim_end + 1) { |
1453 | cpc.trim_start = start_segno; | |
a66cdd98 JK |
1454 | |
1455 | if (sbi->discard_blks == 0) | |
1456 | break; | |
1457 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
1458 | cpc.trim_end = end_segno; | |
1459 | else | |
1460 | cpc.trim_end = min_t(unsigned int, | |
1461 | rounddown(start_segno + | |
bba681cb JK |
1462 | BATCHED_TRIM_SEGMENTS(sbi), |
1463 | sbi->segs_per_sec) - 1, end_segno); | |
1464 | ||
1465 | mutex_lock(&sbi->gc_mutex); | |
c34f42e2 | 1466 | err = write_checkpoint(sbi, &cpc); |
bba681cb | 1467 | mutex_unlock(&sbi->gc_mutex); |
e9328353 CY |
1468 | if (err) |
1469 | break; | |
74fa5f3d CY |
1470 | |
1471 | schedule(); | |
bba681cb | 1472 | } |
4b2fecc8 | 1473 | out: |
f7ef9b83 | 1474 | range->len = F2FS_BLK_TO_BYTES(cpc.trimmed); |
c34f42e2 | 1475 | return err; |
4b2fecc8 JK |
1476 | } |
1477 | ||
351df4b2 JK |
1478 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
1479 | { | |
1480 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
1481 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
1482 | return true; | |
1483 | return false; | |
1484 | } | |
1485 | ||
1486 | static int __get_segment_type_2(struct page *page, enum page_type p_type) | |
1487 | { | |
1488 | if (p_type == DATA) | |
1489 | return CURSEG_HOT_DATA; | |
1490 | else | |
1491 | return CURSEG_HOT_NODE; | |
1492 | } | |
1493 | ||
1494 | static int __get_segment_type_4(struct page *page, enum page_type p_type) | |
1495 | { | |
1496 | if (p_type == DATA) { | |
1497 | struct inode *inode = page->mapping->host; | |
1498 | ||
1499 | if (S_ISDIR(inode->i_mode)) | |
1500 | return CURSEG_HOT_DATA; | |
1501 | else | |
1502 | return CURSEG_COLD_DATA; | |
1503 | } else { | |
a344b9fd JK |
1504 | if (IS_DNODE(page) && is_cold_node(page)) |
1505 | return CURSEG_WARM_NODE; | |
351df4b2 JK |
1506 | else |
1507 | return CURSEG_COLD_NODE; | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | static int __get_segment_type_6(struct page *page, enum page_type p_type) | |
1512 | { | |
1513 | if (p_type == DATA) { | |
1514 | struct inode *inode = page->mapping->host; | |
1515 | ||
1516 | if (S_ISDIR(inode->i_mode)) | |
1517 | return CURSEG_HOT_DATA; | |
354a3399 | 1518 | else if (is_cold_data(page) || file_is_cold(inode)) |
351df4b2 JK |
1519 | return CURSEG_COLD_DATA; |
1520 | else | |
1521 | return CURSEG_WARM_DATA; | |
1522 | } else { | |
1523 | if (IS_DNODE(page)) | |
1524 | return is_cold_node(page) ? CURSEG_WARM_NODE : | |
1525 | CURSEG_HOT_NODE; | |
1526 | else | |
1527 | return CURSEG_COLD_NODE; | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | static int __get_segment_type(struct page *page, enum page_type p_type) | |
1532 | { | |
4081363f | 1533 | switch (F2FS_P_SB(page)->active_logs) { |
351df4b2 JK |
1534 | case 2: |
1535 | return __get_segment_type_2(page, p_type); | |
1536 | case 4: | |
1537 | return __get_segment_type_4(page, p_type); | |
351df4b2 | 1538 | } |
12a67146 | 1539 | /* NR_CURSEG_TYPE(6) logs by default */ |
9850cf4a JK |
1540 | f2fs_bug_on(F2FS_P_SB(page), |
1541 | F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); | |
12a67146 | 1542 | return __get_segment_type_6(page, p_type); |
351df4b2 JK |
1543 | } |
1544 | ||
bfad7c2d JK |
1545 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
1546 | block_t old_blkaddr, block_t *new_blkaddr, | |
1547 | struct f2fs_summary *sum, int type) | |
351df4b2 JK |
1548 | { |
1549 | struct sit_info *sit_i = SIT_I(sbi); | |
6ae1be13 | 1550 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
351df4b2 JK |
1551 | |
1552 | mutex_lock(&curseg->curseg_mutex); | |
21cb1d99 | 1553 | mutex_lock(&sit_i->sentry_lock); |
351df4b2 JK |
1554 | |
1555 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 JK |
1556 | |
1557 | /* | |
1558 | * __add_sum_entry should be resided under the curseg_mutex | |
1559 | * because, this function updates a summary entry in the | |
1560 | * current summary block. | |
1561 | */ | |
e79efe3b | 1562 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1563 | |
351df4b2 | 1564 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
1565 | |
1566 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 1567 | |
5e443818 JK |
1568 | if (!__has_curseg_space(sbi, type)) |
1569 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
351df4b2 JK |
1570 | /* |
1571 | * SIT information should be updated before segment allocation, | |
1572 | * since SSR needs latest valid block information. | |
1573 | */ | |
1574 | refresh_sit_entry(sbi, old_blkaddr, *new_blkaddr); | |
5e443818 | 1575 | |
351df4b2 JK |
1576 | mutex_unlock(&sit_i->sentry_lock); |
1577 | ||
bfad7c2d | 1578 | if (page && IS_NODESEG(type)) |
351df4b2 JK |
1579 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
1580 | ||
bfad7c2d JK |
1581 | mutex_unlock(&curseg->curseg_mutex); |
1582 | } | |
1583 | ||
05ca3632 | 1584 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 1585 | { |
05ca3632 | 1586 | int type = __get_segment_type(fio->page, fio->type); |
bfad7c2d | 1587 | |
7dfeaa32 JK |
1588 | if (fio->type == NODE || fio->type == DATA) |
1589 | mutex_lock(&fio->sbi->wio_mutex[fio->type]); | |
1590 | ||
7a9d7548 CY |
1591 | allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
1592 | &fio->new_blkaddr, sum, type); | |
bfad7c2d | 1593 | |
351df4b2 | 1594 | /* writeout dirty page into bdev */ |
05ca3632 | 1595 | f2fs_submit_page_mbio(fio); |
7dfeaa32 JK |
1596 | |
1597 | if (fio->type == NODE || fio->type == DATA) | |
1598 | mutex_unlock(&fio->sbi->wio_mutex[fio->type]); | |
351df4b2 JK |
1599 | } |
1600 | ||
577e3495 | 1601 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) |
351df4b2 | 1602 | { |
458e6197 | 1603 | struct f2fs_io_info fio = { |
05ca3632 | 1604 | .sbi = sbi, |
458e6197 | 1605 | .type = META, |
04d328de MC |
1606 | .op = REQ_OP_WRITE, |
1607 | .op_flags = WRITE_SYNC | REQ_META | REQ_PRIO, | |
7a9d7548 CY |
1608 | .old_blkaddr = page->index, |
1609 | .new_blkaddr = page->index, | |
05ca3632 | 1610 | .page = page, |
4375a336 | 1611 | .encrypted_page = NULL, |
458e6197 JK |
1612 | }; |
1613 | ||
2b947003 | 1614 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
04d328de | 1615 | fio.op_flags &= ~REQ_META; |
2b947003 | 1616 | |
351df4b2 | 1617 | set_page_writeback(page); |
05ca3632 | 1618 | f2fs_submit_page_mbio(&fio); |
351df4b2 JK |
1619 | } |
1620 | ||
05ca3632 | 1621 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
1622 | { |
1623 | struct f2fs_summary sum; | |
05ca3632 | 1624 | |
351df4b2 | 1625 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 1626 | do_write_page(&sum, fio); |
351df4b2 JK |
1627 | } |
1628 | ||
05ca3632 | 1629 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 1630 | { |
05ca3632 | 1631 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
1632 | struct f2fs_summary sum; |
1633 | struct node_info ni; | |
1634 | ||
9850cf4a | 1635 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
1636 | get_node_info(sbi, dn->nid, &ni); |
1637 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 1638 | do_write_page(&sum, fio); |
f28b3434 | 1639 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
351df4b2 JK |
1640 | } |
1641 | ||
05ca3632 | 1642 | void rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 1643 | { |
7a9d7548 | 1644 | fio->new_blkaddr = fio->old_blkaddr; |
05ca3632 JK |
1645 | stat_inc_inplace_blocks(fio->sbi); |
1646 | f2fs_submit_page_mbio(fio); | |
351df4b2 JK |
1647 | } |
1648 | ||
4356e48e | 1649 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 1650 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 1651 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
1652 | { |
1653 | struct sit_info *sit_i = SIT_I(sbi); | |
1654 | struct curseg_info *curseg; | |
1655 | unsigned int segno, old_cursegno; | |
1656 | struct seg_entry *se; | |
1657 | int type; | |
19f106bc | 1658 | unsigned short old_blkoff; |
351df4b2 JK |
1659 | |
1660 | segno = GET_SEGNO(sbi, new_blkaddr); | |
1661 | se = get_seg_entry(sbi, segno); | |
1662 | type = se->type; | |
1663 | ||
19f106bc CY |
1664 | if (!recover_curseg) { |
1665 | /* for recovery flow */ | |
1666 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
1667 | if (old_blkaddr == NULL_ADDR) | |
1668 | type = CURSEG_COLD_DATA; | |
1669 | else | |
1670 | type = CURSEG_WARM_DATA; | |
1671 | } | |
1672 | } else { | |
1673 | if (!IS_CURSEG(sbi, segno)) | |
351df4b2 JK |
1674 | type = CURSEG_WARM_DATA; |
1675 | } | |
19f106bc | 1676 | |
351df4b2 JK |
1677 | curseg = CURSEG_I(sbi, type); |
1678 | ||
1679 | mutex_lock(&curseg->curseg_mutex); | |
1680 | mutex_lock(&sit_i->sentry_lock); | |
1681 | ||
1682 | old_cursegno = curseg->segno; | |
19f106bc | 1683 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
1684 | |
1685 | /* change the current segment */ | |
1686 | if (segno != curseg->segno) { | |
1687 | curseg->next_segno = segno; | |
1688 | change_curseg(sbi, type, true); | |
1689 | } | |
1690 | ||
491c0854 | 1691 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 1692 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 1693 | |
28bc106b | 1694 | if (!recover_curseg || recover_newaddr) |
6e2c64ad JK |
1695 | update_sit_entry(sbi, new_blkaddr, 1); |
1696 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
1697 | update_sit_entry(sbi, old_blkaddr, -1); | |
1698 | ||
1699 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
1700 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
1701 | ||
351df4b2 | 1702 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 1703 | |
19f106bc CY |
1704 | if (recover_curseg) { |
1705 | if (old_cursegno != curseg->segno) { | |
1706 | curseg->next_segno = old_cursegno; | |
1707 | change_curseg(sbi, type, true); | |
1708 | } | |
1709 | curseg->next_blkoff = old_blkoff; | |
1710 | } | |
1711 | ||
351df4b2 JK |
1712 | mutex_unlock(&sit_i->sentry_lock); |
1713 | mutex_unlock(&curseg->curseg_mutex); | |
1714 | } | |
1715 | ||
528e3459 CY |
1716 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
1717 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
1718 | unsigned char version, bool recover_curseg, |
1719 | bool recover_newaddr) | |
528e3459 CY |
1720 | { |
1721 | struct f2fs_summary sum; | |
1722 | ||
1723 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
1724 | ||
28bc106b CY |
1725 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, |
1726 | recover_curseg, recover_newaddr); | |
528e3459 | 1727 | |
f28b3434 | 1728 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
1729 | } |
1730 | ||
93dfe2ac | 1731 | void f2fs_wait_on_page_writeback(struct page *page, |
fec1d657 | 1732 | enum page_type type, bool ordered) |
93dfe2ac | 1733 | { |
93dfe2ac | 1734 | if (PageWriteback(page)) { |
4081363f JK |
1735 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
1736 | ||
0c3a5797 | 1737 | f2fs_submit_merged_bio_cond(sbi, NULL, page, 0, type, WRITE); |
fec1d657 JK |
1738 | if (ordered) |
1739 | wait_on_page_writeback(page); | |
1740 | else | |
1741 | wait_for_stable_page(page); | |
93dfe2ac JK |
1742 | } |
1743 | } | |
1744 | ||
08b39fbd CY |
1745 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *sbi, |
1746 | block_t blkaddr) | |
1747 | { | |
1748 | struct page *cpage; | |
1749 | ||
5d4c0af4 | 1750 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) |
08b39fbd CY |
1751 | return; |
1752 | ||
08b39fbd CY |
1753 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
1754 | if (cpage) { | |
fec1d657 | 1755 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
08b39fbd CY |
1756 | f2fs_put_page(cpage, 1); |
1757 | } | |
1758 | } | |
1759 | ||
351df4b2 JK |
1760 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
1761 | { | |
1762 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1763 | struct curseg_info *seg_i; | |
1764 | unsigned char *kaddr; | |
1765 | struct page *page; | |
1766 | block_t start; | |
1767 | int i, j, offset; | |
1768 | ||
1769 | start = start_sum_block(sbi); | |
1770 | ||
1771 | page = get_meta_page(sbi, start++); | |
1772 | kaddr = (unsigned char *)page_address(page); | |
1773 | ||
1774 | /* Step 1: restore nat cache */ | |
1775 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 1776 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1777 | |
1778 | /* Step 2: restore sit cache */ | |
1779 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 1780 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1781 | offset = 2 * SUM_JOURNAL_SIZE; |
1782 | ||
1783 | /* Step 3: restore summary entries */ | |
1784 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1785 | unsigned short blk_off; | |
1786 | unsigned int segno; | |
1787 | ||
1788 | seg_i = CURSEG_I(sbi, i); | |
1789 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
1790 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
1791 | seg_i->next_segno = segno; | |
1792 | reset_curseg(sbi, i, 0); | |
1793 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
1794 | seg_i->next_blkoff = blk_off; | |
1795 | ||
1796 | if (seg_i->alloc_type == SSR) | |
1797 | blk_off = sbi->blocks_per_seg; | |
1798 | ||
1799 | for (j = 0; j < blk_off; j++) { | |
1800 | struct f2fs_summary *s; | |
1801 | s = (struct f2fs_summary *)(kaddr + offset); | |
1802 | seg_i->sum_blk->entries[j] = *s; | |
1803 | offset += SUMMARY_SIZE; | |
09cbfeaf | 1804 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
1805 | SUM_FOOTER_SIZE) |
1806 | continue; | |
1807 | ||
1808 | f2fs_put_page(page, 1); | |
1809 | page = NULL; | |
1810 | ||
1811 | page = get_meta_page(sbi, start++); | |
1812 | kaddr = (unsigned char *)page_address(page); | |
1813 | offset = 0; | |
1814 | } | |
1815 | } | |
1816 | f2fs_put_page(page, 1); | |
1817 | return 0; | |
1818 | } | |
1819 | ||
1820 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
1821 | { | |
1822 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1823 | struct f2fs_summary_block *sum; | |
1824 | struct curseg_info *curseg; | |
1825 | struct page *new; | |
1826 | unsigned short blk_off; | |
1827 | unsigned int segno = 0; | |
1828 | block_t blk_addr = 0; | |
1829 | ||
1830 | /* get segment number and block addr */ | |
1831 | if (IS_DATASEG(type)) { | |
1832 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
1833 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
1834 | CURSEG_HOT_DATA]); | |
119ee914 | 1835 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1836 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
1837 | else | |
1838 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
1839 | } else { | |
1840 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
1841 | CURSEG_HOT_NODE]); | |
1842 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
1843 | CURSEG_HOT_NODE]); | |
119ee914 | 1844 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
1845 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
1846 | type - CURSEG_HOT_NODE); | |
1847 | else | |
1848 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
1849 | } | |
1850 | ||
1851 | new = get_meta_page(sbi, blk_addr); | |
1852 | sum = (struct f2fs_summary_block *)page_address(new); | |
1853 | ||
1854 | if (IS_NODESEG(type)) { | |
119ee914 | 1855 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
1856 | struct f2fs_summary *ns = &sum->entries[0]; |
1857 | int i; | |
1858 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
1859 | ns->version = 0; | |
1860 | ns->ofs_in_node = 0; | |
1861 | } | |
1862 | } else { | |
d653788a GZ |
1863 | int err; |
1864 | ||
1865 | err = restore_node_summary(sbi, segno, sum); | |
1866 | if (err) { | |
351df4b2 | 1867 | f2fs_put_page(new, 1); |
d653788a | 1868 | return err; |
351df4b2 JK |
1869 | } |
1870 | } | |
1871 | } | |
1872 | ||
1873 | /* set uncompleted segment to curseg */ | |
1874 | curseg = CURSEG_I(sbi, type); | |
1875 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
1876 | |
1877 | /* update journal info */ | |
1878 | down_write(&curseg->journal_rwsem); | |
1879 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
1880 | up_write(&curseg->journal_rwsem); | |
1881 | ||
1882 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
1883 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
1884 | curseg->next_segno = segno; |
1885 | reset_curseg(sbi, type, 0); | |
1886 | curseg->alloc_type = ckpt->alloc_type[type]; | |
1887 | curseg->next_blkoff = blk_off; | |
1888 | mutex_unlock(&curseg->curseg_mutex); | |
1889 | f2fs_put_page(new, 1); | |
1890 | return 0; | |
1891 | } | |
1892 | ||
1893 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
1894 | { | |
1895 | int type = CURSEG_HOT_DATA; | |
e4fc5fbf | 1896 | int err; |
351df4b2 | 1897 | |
aaec2b1d | 1898 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
1899 | int npages = npages_for_summary_flush(sbi, true); |
1900 | ||
1901 | if (npages >= 2) | |
1902 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
26879fb1 | 1903 | META_CP, true); |
3fa06d7b | 1904 | |
351df4b2 JK |
1905 | /* restore for compacted data summary */ |
1906 | if (read_compacted_summaries(sbi)) | |
1907 | return -EINVAL; | |
1908 | type = CURSEG_HOT_NODE; | |
1909 | } | |
1910 | ||
119ee914 | 1911 | if (__exist_node_summaries(sbi)) |
3fa06d7b | 1912 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 1913 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 1914 | |
e4fc5fbf CY |
1915 | for (; type <= CURSEG_COLD_NODE; type++) { |
1916 | err = read_normal_summaries(sbi, type); | |
1917 | if (err) | |
1918 | return err; | |
1919 | } | |
1920 | ||
351df4b2 JK |
1921 | return 0; |
1922 | } | |
1923 | ||
1924 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
1925 | { | |
1926 | struct page *page; | |
1927 | unsigned char *kaddr; | |
1928 | struct f2fs_summary *summary; | |
1929 | struct curseg_info *seg_i; | |
1930 | int written_size = 0; | |
1931 | int i, j; | |
1932 | ||
1933 | page = grab_meta_page(sbi, blkaddr++); | |
1934 | kaddr = (unsigned char *)page_address(page); | |
1935 | ||
1936 | /* Step 1: write nat cache */ | |
1937 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 1938 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1939 | written_size += SUM_JOURNAL_SIZE; |
1940 | ||
1941 | /* Step 2: write sit cache */ | |
1942 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 1943 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
1944 | written_size += SUM_JOURNAL_SIZE; |
1945 | ||
351df4b2 JK |
1946 | /* Step 3: write summary entries */ |
1947 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
1948 | unsigned short blkoff; | |
1949 | seg_i = CURSEG_I(sbi, i); | |
1950 | if (sbi->ckpt->alloc_type[i] == SSR) | |
1951 | blkoff = sbi->blocks_per_seg; | |
1952 | else | |
1953 | blkoff = curseg_blkoff(sbi, i); | |
1954 | ||
1955 | for (j = 0; j < blkoff; j++) { | |
1956 | if (!page) { | |
1957 | page = grab_meta_page(sbi, blkaddr++); | |
1958 | kaddr = (unsigned char *)page_address(page); | |
1959 | written_size = 0; | |
1960 | } | |
1961 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
1962 | *summary = seg_i->sum_blk->entries[j]; | |
1963 | written_size += SUMMARY_SIZE; | |
351df4b2 | 1964 | |
09cbfeaf | 1965 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
1966 | SUM_FOOTER_SIZE) |
1967 | continue; | |
1968 | ||
e8d61a74 | 1969 | set_page_dirty(page); |
351df4b2 JK |
1970 | f2fs_put_page(page, 1); |
1971 | page = NULL; | |
1972 | } | |
1973 | } | |
e8d61a74 CY |
1974 | if (page) { |
1975 | set_page_dirty(page); | |
351df4b2 | 1976 | f2fs_put_page(page, 1); |
e8d61a74 | 1977 | } |
351df4b2 JK |
1978 | } |
1979 | ||
1980 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
1981 | block_t blkaddr, int type) | |
1982 | { | |
1983 | int i, end; | |
1984 | if (IS_DATASEG(type)) | |
1985 | end = type + NR_CURSEG_DATA_TYPE; | |
1986 | else | |
1987 | end = type + NR_CURSEG_NODE_TYPE; | |
1988 | ||
b7ad7512 CY |
1989 | for (i = type; i < end; i++) |
1990 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
1991 | } |
1992 | ||
1993 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
1994 | { | |
aaec2b1d | 1995 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
1996 | write_compacted_summaries(sbi, start_blk); |
1997 | else | |
1998 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
1999 | } | |
2000 | ||
2001 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
2002 | { | |
119ee914 | 2003 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
2004 | } |
2005 | ||
dfc08a12 | 2006 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
2007 | unsigned int val, int alloc) |
2008 | { | |
2009 | int i; | |
2010 | ||
2011 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
2012 | for (i = 0; i < nats_in_cursum(journal); i++) { |
2013 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
2014 | return i; |
2015 | } | |
dfc08a12 CY |
2016 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
2017 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 2018 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
2019 | for (i = 0; i < sits_in_cursum(journal); i++) |
2020 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 2021 | return i; |
dfc08a12 CY |
2022 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
2023 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
2024 | } |
2025 | return -1; | |
2026 | } | |
2027 | ||
2028 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
2029 | unsigned int segno) | |
2030 | { | |
2cc22186 | 2031 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
2032 | } |
2033 | ||
2034 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
2035 | unsigned int start) | |
2036 | { | |
2037 | struct sit_info *sit_i = SIT_I(sbi); | |
2038 | struct page *src_page, *dst_page; | |
2039 | pgoff_t src_off, dst_off; | |
2040 | void *src_addr, *dst_addr; | |
2041 | ||
2042 | src_off = current_sit_addr(sbi, start); | |
2043 | dst_off = next_sit_addr(sbi, src_off); | |
2044 | ||
2045 | /* get current sit block page without lock */ | |
2046 | src_page = get_meta_page(sbi, src_off); | |
2047 | dst_page = grab_meta_page(sbi, dst_off); | |
9850cf4a | 2048 | f2fs_bug_on(sbi, PageDirty(src_page)); |
351df4b2 JK |
2049 | |
2050 | src_addr = page_address(src_page); | |
2051 | dst_addr = page_address(dst_page); | |
09cbfeaf | 2052 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
351df4b2 JK |
2053 | |
2054 | set_page_dirty(dst_page); | |
2055 | f2fs_put_page(src_page, 1); | |
2056 | ||
2057 | set_to_next_sit(sit_i, start); | |
2058 | ||
2059 | return dst_page; | |
2060 | } | |
2061 | ||
184a5cd2 CY |
2062 | static struct sit_entry_set *grab_sit_entry_set(void) |
2063 | { | |
2064 | struct sit_entry_set *ses = | |
80c54505 | 2065 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
2066 | |
2067 | ses->entry_cnt = 0; | |
2068 | INIT_LIST_HEAD(&ses->set_list); | |
2069 | return ses; | |
2070 | } | |
2071 | ||
2072 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
2073 | { | |
2074 | list_del(&ses->set_list); | |
2075 | kmem_cache_free(sit_entry_set_slab, ses); | |
2076 | } | |
2077 | ||
2078 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
2079 | struct list_head *head) | |
2080 | { | |
2081 | struct sit_entry_set *next = ses; | |
2082 | ||
2083 | if (list_is_last(&ses->set_list, head)) | |
2084 | return; | |
2085 | ||
2086 | list_for_each_entry_continue(next, head, set_list) | |
2087 | if (ses->entry_cnt <= next->entry_cnt) | |
2088 | break; | |
2089 | ||
2090 | list_move_tail(&ses->set_list, &next->set_list); | |
2091 | } | |
2092 | ||
2093 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
2094 | { | |
2095 | struct sit_entry_set *ses; | |
2096 | unsigned int start_segno = START_SEGNO(segno); | |
2097 | ||
2098 | list_for_each_entry(ses, head, set_list) { | |
2099 | if (ses->start_segno == start_segno) { | |
2100 | ses->entry_cnt++; | |
2101 | adjust_sit_entry_set(ses, head); | |
2102 | return; | |
2103 | } | |
2104 | } | |
2105 | ||
2106 | ses = grab_sit_entry_set(); | |
2107 | ||
2108 | ses->start_segno = start_segno; | |
2109 | ses->entry_cnt++; | |
2110 | list_add(&ses->set_list, head); | |
2111 | } | |
2112 | ||
2113 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
2114 | { | |
2115 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
2116 | struct list_head *set_list = &sm_info->sit_entry_set; | |
2117 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
2118 | unsigned int segno; |
2119 | ||
7cd8558b | 2120 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
2121 | add_sit_entry(segno, set_list); |
2122 | } | |
2123 | ||
2124 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
2125 | { |
2126 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2127 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
2128 | int i; |
2129 | ||
b7ad7512 | 2130 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 2131 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
2132 | unsigned int segno; |
2133 | bool dirtied; | |
2134 | ||
dfc08a12 | 2135 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
2136 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
2137 | ||
2138 | if (!dirtied) | |
2139 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 2140 | } |
dfc08a12 | 2141 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 2142 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
2143 | } |
2144 | ||
0a8165d7 | 2145 | /* |
351df4b2 JK |
2146 | * CP calls this function, which flushes SIT entries including sit_journal, |
2147 | * and moves prefree segs to free segs. | |
2148 | */ | |
4b2fecc8 | 2149 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
2150 | { |
2151 | struct sit_info *sit_i = SIT_I(sbi); | |
2152 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
2153 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2154 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
2155 | struct sit_entry_set *ses, *tmp; |
2156 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 2157 | bool to_journal = true; |
4b2fecc8 | 2158 | struct seg_entry *se; |
351df4b2 | 2159 | |
351df4b2 JK |
2160 | mutex_lock(&sit_i->sentry_lock); |
2161 | ||
2b11a74b WL |
2162 | if (!sit_i->dirty_sentries) |
2163 | goto out; | |
2164 | ||
351df4b2 | 2165 | /* |
184a5cd2 CY |
2166 | * add and account sit entries of dirty bitmap in sit entry |
2167 | * set temporarily | |
351df4b2 | 2168 | */ |
184a5cd2 | 2169 | add_sits_in_set(sbi); |
351df4b2 | 2170 | |
184a5cd2 CY |
2171 | /* |
2172 | * if there are no enough space in journal to store dirty sit | |
2173 | * entries, remove all entries from journal and add and account | |
2174 | * them in sit entry set. | |
2175 | */ | |
dfc08a12 | 2176 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 2177 | remove_sits_in_journal(sbi); |
b2955550 | 2178 | |
184a5cd2 CY |
2179 | /* |
2180 | * there are two steps to flush sit entries: | |
2181 | * #1, flush sit entries to journal in current cold data summary block. | |
2182 | * #2, flush sit entries to sit page. | |
2183 | */ | |
2184 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 2185 | struct page *page = NULL; |
184a5cd2 CY |
2186 | struct f2fs_sit_block *raw_sit = NULL; |
2187 | unsigned int start_segno = ses->start_segno; | |
2188 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 2189 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
2190 | unsigned int segno = start_segno; |
2191 | ||
2192 | if (to_journal && | |
dfc08a12 | 2193 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
2194 | to_journal = false; |
2195 | ||
b7ad7512 CY |
2196 | if (to_journal) { |
2197 | down_write(&curseg->journal_rwsem); | |
2198 | } else { | |
184a5cd2 CY |
2199 | page = get_next_sit_page(sbi, start_segno); |
2200 | raw_sit = page_address(page); | |
351df4b2 | 2201 | } |
351df4b2 | 2202 | |
184a5cd2 CY |
2203 | /* flush dirty sit entries in region of current sit set */ |
2204 | for_each_set_bit_from(segno, bitmap, end) { | |
2205 | int offset, sit_offset; | |
4b2fecc8 JK |
2206 | |
2207 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
2208 | |
2209 | /* add discard candidates */ | |
d7bc2484 | 2210 | if (cpc->reason != CP_DISCARD) { |
4b2fecc8 JK |
2211 | cpc->trim_start = segno; |
2212 | add_discard_addrs(sbi, cpc); | |
2213 | } | |
184a5cd2 CY |
2214 | |
2215 | if (to_journal) { | |
dfc08a12 | 2216 | offset = lookup_journal_in_cursum(journal, |
184a5cd2 CY |
2217 | SIT_JOURNAL, segno, 1); |
2218 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 2219 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
2220 | cpu_to_le32(segno); |
2221 | seg_info_to_raw_sit(se, | |
dfc08a12 | 2222 | &sit_in_journal(journal, offset)); |
184a5cd2 CY |
2223 | } else { |
2224 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
2225 | seg_info_to_raw_sit(se, | |
2226 | &raw_sit->entries[sit_offset]); | |
2227 | } | |
351df4b2 | 2228 | |
184a5cd2 CY |
2229 | __clear_bit(segno, bitmap); |
2230 | sit_i->dirty_sentries--; | |
2231 | ses->entry_cnt--; | |
351df4b2 JK |
2232 | } |
2233 | ||
b7ad7512 CY |
2234 | if (to_journal) |
2235 | up_write(&curseg->journal_rwsem); | |
2236 | else | |
184a5cd2 CY |
2237 | f2fs_put_page(page, 1); |
2238 | ||
2239 | f2fs_bug_on(sbi, ses->entry_cnt); | |
2240 | release_sit_entry_set(ses); | |
351df4b2 | 2241 | } |
184a5cd2 CY |
2242 | |
2243 | f2fs_bug_on(sbi, !list_empty(head)); | |
2244 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 2245 | out: |
4b2fecc8 JK |
2246 | if (cpc->reason == CP_DISCARD) { |
2247 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) | |
2248 | add_discard_addrs(sbi, cpc); | |
2249 | } | |
351df4b2 | 2250 | mutex_unlock(&sit_i->sentry_lock); |
351df4b2 | 2251 | |
351df4b2 JK |
2252 | set_prefree_as_free_segments(sbi); |
2253 | } | |
2254 | ||
2255 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
2256 | { | |
2257 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2258 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2259 | struct sit_info *sit_i; | |
2260 | unsigned int sit_segs, start; | |
2261 | char *src_bitmap, *dst_bitmap; | |
2262 | unsigned int bitmap_size; | |
2263 | ||
2264 | /* allocate memory for SIT information */ | |
2265 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); | |
2266 | if (!sit_i) | |
2267 | return -ENOMEM; | |
2268 | ||
2269 | SM_I(sbi)->sit_info = sit_i; | |
2270 | ||
39307a8e JK |
2271 | sit_i->sentries = f2fs_kvzalloc(MAIN_SEGS(sbi) * |
2272 | sizeof(struct seg_entry), GFP_KERNEL); | |
351df4b2 JK |
2273 | if (!sit_i->sentries) |
2274 | return -ENOMEM; | |
2275 | ||
7cd8558b | 2276 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2277 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2278 | if (!sit_i->dirty_sentries_bitmap) |
2279 | return -ENOMEM; | |
2280 | ||
7cd8558b | 2281 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2282 | sit_i->sentries[start].cur_valid_map |
2283 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2284 | sit_i->sentries[start].ckpt_valid_map | |
2285 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
a66cdd98 | 2286 | if (!sit_i->sentries[start].cur_valid_map || |
3e025740 | 2287 | !sit_i->sentries[start].ckpt_valid_map) |
351df4b2 | 2288 | return -ENOMEM; |
3e025740 JK |
2289 | |
2290 | if (f2fs_discard_en(sbi)) { | |
2291 | sit_i->sentries[start].discard_map | |
2292 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
2293 | if (!sit_i->sentries[start].discard_map) | |
2294 | return -ENOMEM; | |
2295 | } | |
351df4b2 JK |
2296 | } |
2297 | ||
60a3b782 JK |
2298 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
2299 | if (!sit_i->tmp_map) | |
2300 | return -ENOMEM; | |
2301 | ||
351df4b2 | 2302 | if (sbi->segs_per_sec > 1) { |
39307a8e JK |
2303 | sit_i->sec_entries = f2fs_kvzalloc(MAIN_SECS(sbi) * |
2304 | sizeof(struct sec_entry), GFP_KERNEL); | |
351df4b2 JK |
2305 | if (!sit_i->sec_entries) |
2306 | return -ENOMEM; | |
2307 | } | |
2308 | ||
2309 | /* get information related with SIT */ | |
2310 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
2311 | ||
2312 | /* setup SIT bitmap from ckeckpoint pack */ | |
2313 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
2314 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
2315 | ||
79b5793b | 2316 | dst_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2317 | if (!dst_bitmap) |
2318 | return -ENOMEM; | |
351df4b2 JK |
2319 | |
2320 | /* init SIT information */ | |
2321 | sit_i->s_ops = &default_salloc_ops; | |
2322 | ||
2323 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
2324 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
2325 | sit_i->written_valid_blocks = le64_to_cpu(ckpt->valid_block_count); | |
2326 | sit_i->sit_bitmap = dst_bitmap; | |
2327 | sit_i->bitmap_size = bitmap_size; | |
2328 | sit_i->dirty_sentries = 0; | |
2329 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
2330 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
2331 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; | |
2332 | mutex_init(&sit_i->sentry_lock); | |
2333 | return 0; | |
2334 | } | |
2335 | ||
2336 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
2337 | { | |
351df4b2 JK |
2338 | struct free_segmap_info *free_i; |
2339 | unsigned int bitmap_size, sec_bitmap_size; | |
2340 | ||
2341 | /* allocate memory for free segmap information */ | |
2342 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); | |
2343 | if (!free_i) | |
2344 | return -ENOMEM; | |
2345 | ||
2346 | SM_I(sbi)->free_info = free_i; | |
2347 | ||
7cd8558b | 2348 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
39307a8e | 2349 | free_i->free_segmap = f2fs_kvmalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2350 | if (!free_i->free_segmap) |
2351 | return -ENOMEM; | |
2352 | ||
7cd8558b | 2353 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
39307a8e | 2354 | free_i->free_secmap = f2fs_kvmalloc(sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2355 | if (!free_i->free_secmap) |
2356 | return -ENOMEM; | |
2357 | ||
2358 | /* set all segments as dirty temporarily */ | |
2359 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
2360 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
2361 | ||
2362 | /* init free segmap information */ | |
7cd8558b | 2363 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
2364 | free_i->free_segments = 0; |
2365 | free_i->free_sections = 0; | |
1a118ccf | 2366 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
2367 | return 0; |
2368 | } | |
2369 | ||
2370 | static int build_curseg(struct f2fs_sb_info *sbi) | |
2371 | { | |
1042d60f | 2372 | struct curseg_info *array; |
351df4b2 JK |
2373 | int i; |
2374 | ||
b434babf | 2375 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
351df4b2 JK |
2376 | if (!array) |
2377 | return -ENOMEM; | |
2378 | ||
2379 | SM_I(sbi)->curseg_array = array; | |
2380 | ||
2381 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
2382 | mutex_init(&array[i].curseg_mutex); | |
09cbfeaf | 2383 | array[i].sum_blk = kzalloc(PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
2384 | if (!array[i].sum_blk) |
2385 | return -ENOMEM; | |
b7ad7512 CY |
2386 | init_rwsem(&array[i].journal_rwsem); |
2387 | array[i].journal = kzalloc(sizeof(struct f2fs_journal), | |
2388 | GFP_KERNEL); | |
2389 | if (!array[i].journal) | |
2390 | return -ENOMEM; | |
351df4b2 JK |
2391 | array[i].segno = NULL_SEGNO; |
2392 | array[i].next_blkoff = 0; | |
2393 | } | |
2394 | return restore_curseg_summaries(sbi); | |
2395 | } | |
2396 | ||
2397 | static void build_sit_entries(struct f2fs_sb_info *sbi) | |
2398 | { | |
2399 | struct sit_info *sit_i = SIT_I(sbi); | |
2400 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 2401 | struct f2fs_journal *journal = curseg->journal; |
9c094040 YH |
2402 | struct seg_entry *se; |
2403 | struct f2fs_sit_entry sit; | |
74de593a CY |
2404 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
2405 | unsigned int i, start, end; | |
2406 | unsigned int readed, start_blk = 0; | |
351df4b2 | 2407 | |
74de593a | 2408 | do { |
664ba972 JK |
2409 | readed = ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
2410 | META_SIT, true); | |
74de593a CY |
2411 | |
2412 | start = start_blk * sit_i->sents_per_block; | |
2413 | end = (start_blk + readed) * sit_i->sents_per_block; | |
2414 | ||
7cd8558b | 2415 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 2416 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
2417 | struct page *page; |
2418 | ||
9c094040 | 2419 | se = &sit_i->sentries[start]; |
74de593a CY |
2420 | page = get_current_sit_page(sbi, start); |
2421 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
2422 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
2423 | f2fs_put_page(page, 1); | |
d600af23 | 2424 | |
74de593a CY |
2425 | check_block_count(sbi, start, &sit); |
2426 | seg_info_from_raw_sit(se, &sit); | |
a66cdd98 JK |
2427 | |
2428 | /* build discard map only one time */ | |
3e025740 JK |
2429 | if (f2fs_discard_en(sbi)) { |
2430 | memcpy(se->discard_map, se->cur_valid_map, | |
2431 | SIT_VBLOCK_MAP_SIZE); | |
2432 | sbi->discard_blks += sbi->blocks_per_seg - | |
2433 | se->valid_blocks; | |
2434 | } | |
a66cdd98 | 2435 | |
d600af23 CY |
2436 | if (sbi->segs_per_sec > 1) |
2437 | get_sec_entry(sbi, start)->valid_blocks += | |
2438 | se->valid_blocks; | |
351df4b2 | 2439 | } |
74de593a CY |
2440 | start_blk += readed; |
2441 | } while (start_blk < sit_blk_cnt); | |
d600af23 CY |
2442 | |
2443 | down_read(&curseg->journal_rwsem); | |
2444 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
d600af23 CY |
2445 | unsigned int old_valid_blocks; |
2446 | ||
2447 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
2448 | se = &sit_i->sentries[start]; | |
2449 | sit = sit_in_journal(journal, i); | |
2450 | ||
2451 | old_valid_blocks = se->valid_blocks; | |
2452 | ||
2453 | check_block_count(sbi, start, &sit); | |
2454 | seg_info_from_raw_sit(se, &sit); | |
2455 | ||
2456 | if (f2fs_discard_en(sbi)) { | |
2457 | memcpy(se->discard_map, se->cur_valid_map, | |
2458 | SIT_VBLOCK_MAP_SIZE); | |
2459 | sbi->discard_blks += old_valid_blocks - | |
2460 | se->valid_blocks; | |
2461 | } | |
2462 | ||
2463 | if (sbi->segs_per_sec > 1) | |
2464 | get_sec_entry(sbi, start)->valid_blocks += | |
2465 | se->valid_blocks - old_valid_blocks; | |
2466 | } | |
2467 | up_read(&curseg->journal_rwsem); | |
351df4b2 JK |
2468 | } |
2469 | ||
2470 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
2471 | { | |
2472 | unsigned int start; | |
2473 | int type; | |
2474 | ||
7cd8558b | 2475 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2476 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
2477 | if (!sentry->valid_blocks) | |
2478 | __set_free(sbi, start); | |
2479 | } | |
2480 | ||
2481 | /* set use the current segments */ | |
2482 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
2483 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
2484 | __set_test_and_inuse(sbi, curseg_t->segno); | |
2485 | } | |
2486 | } | |
2487 | ||
2488 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
2489 | { | |
2490 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2491 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 2492 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
2493 | unsigned short valid_blocks; |
2494 | ||
8736fbf0 | 2495 | while (1) { |
351df4b2 | 2496 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
2497 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
2498 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
2499 | break; |
2500 | offset = segno + 1; | |
2501 | valid_blocks = get_valid_blocks(sbi, segno, 0); | |
ec325b52 | 2502 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 2503 | continue; |
ec325b52 JK |
2504 | if (valid_blocks > sbi->blocks_per_seg) { |
2505 | f2fs_bug_on(sbi, 1); | |
2506 | continue; | |
2507 | } | |
351df4b2 JK |
2508 | mutex_lock(&dirty_i->seglist_lock); |
2509 | __locate_dirty_segment(sbi, segno, DIRTY); | |
2510 | mutex_unlock(&dirty_i->seglist_lock); | |
2511 | } | |
2512 | } | |
2513 | ||
5ec4e49f | 2514 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2515 | { |
2516 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 2517 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 2518 | |
39307a8e | 2519 | dirty_i->victim_secmap = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
5ec4e49f | 2520 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
2521 | return -ENOMEM; |
2522 | return 0; | |
2523 | } | |
2524 | ||
2525 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
2526 | { | |
2527 | struct dirty_seglist_info *dirty_i; | |
2528 | unsigned int bitmap_size, i; | |
2529 | ||
2530 | /* allocate memory for dirty segments list information */ | |
2531 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); | |
2532 | if (!dirty_i) | |
2533 | return -ENOMEM; | |
2534 | ||
2535 | SM_I(sbi)->dirty_info = dirty_i; | |
2536 | mutex_init(&dirty_i->seglist_lock); | |
2537 | ||
7cd8558b | 2538 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
2539 | |
2540 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
39307a8e | 2541 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
2542 | if (!dirty_i->dirty_segmap[i]) |
2543 | return -ENOMEM; | |
2544 | } | |
2545 | ||
2546 | init_dirty_segmap(sbi); | |
5ec4e49f | 2547 | return init_victim_secmap(sbi); |
351df4b2 JK |
2548 | } |
2549 | ||
0a8165d7 | 2550 | /* |
351df4b2 JK |
2551 | * Update min, max modified time for cost-benefit GC algorithm |
2552 | */ | |
2553 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
2554 | { | |
2555 | struct sit_info *sit_i = SIT_I(sbi); | |
2556 | unsigned int segno; | |
2557 | ||
2558 | mutex_lock(&sit_i->sentry_lock); | |
2559 | ||
2560 | sit_i->min_mtime = LLONG_MAX; | |
2561 | ||
7cd8558b | 2562 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
2563 | unsigned int i; |
2564 | unsigned long long mtime = 0; | |
2565 | ||
2566 | for (i = 0; i < sbi->segs_per_sec; i++) | |
2567 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
2568 | ||
2569 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
2570 | ||
2571 | if (sit_i->min_mtime > mtime) | |
2572 | sit_i->min_mtime = mtime; | |
2573 | } | |
2574 | sit_i->max_mtime = get_mtime(sbi); | |
2575 | mutex_unlock(&sit_i->sentry_lock); | |
2576 | } | |
2577 | ||
2578 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
2579 | { | |
2580 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
2581 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 2582 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
2583 | int err; |
2584 | ||
2585 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); | |
2586 | if (!sm_info) | |
2587 | return -ENOMEM; | |
2588 | ||
2589 | /* init sm info */ | |
2590 | sbi->sm_info = sm_info; | |
351df4b2 JK |
2591 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
2592 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
2593 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
2594 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
2595 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
2596 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
2597 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
2598 | sm_info->rec_prefree_segments = sm_info->main_segments * |
2599 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
44a83499 JK |
2600 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
2601 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
2602 | ||
52763a4b JK |
2603 | if (!test_opt(sbi, LFS)) |
2604 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; | |
216fbd64 | 2605 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 2606 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
351df4b2 | 2607 | |
7fd9e544 | 2608 | INIT_LIST_HEAD(&sm_info->discard_list); |
275b66b0 | 2609 | INIT_LIST_HEAD(&sm_info->wait_list); |
7fd9e544 JK |
2610 | sm_info->nr_discards = 0; |
2611 | sm_info->max_discards = 0; | |
2612 | ||
bba681cb JK |
2613 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
2614 | ||
184a5cd2 CY |
2615 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
2616 | ||
b270ad6f | 2617 | if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
2618 | err = create_flush_cmd_control(sbi); |
2619 | if (err) | |
a688b9d9 | 2620 | return err; |
6b4afdd7 JK |
2621 | } |
2622 | ||
351df4b2 JK |
2623 | err = build_sit_info(sbi); |
2624 | if (err) | |
2625 | return err; | |
2626 | err = build_free_segmap(sbi); | |
2627 | if (err) | |
2628 | return err; | |
2629 | err = build_curseg(sbi); | |
2630 | if (err) | |
2631 | return err; | |
2632 | ||
2633 | /* reinit free segmap based on SIT */ | |
2634 | build_sit_entries(sbi); | |
2635 | ||
2636 | init_free_segmap(sbi); | |
2637 | err = build_dirty_segmap(sbi); | |
2638 | if (err) | |
2639 | return err; | |
2640 | ||
2641 | init_min_max_mtime(sbi); | |
2642 | return 0; | |
2643 | } | |
2644 | ||
2645 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
2646 | enum dirty_type dirty_type) | |
2647 | { | |
2648 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2649 | ||
2650 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 2651 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
2652 | dirty_i->nr_dirty[dirty_type] = 0; |
2653 | mutex_unlock(&dirty_i->seglist_lock); | |
2654 | } | |
2655 | ||
5ec4e49f | 2656 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
2657 | { |
2658 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 2659 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
2660 | } |
2661 | ||
2662 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
2663 | { | |
2664 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2665 | int i; | |
2666 | ||
2667 | if (!dirty_i) | |
2668 | return; | |
2669 | ||
2670 | /* discard pre-free/dirty segments list */ | |
2671 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
2672 | discard_dirty_segmap(sbi, i); | |
2673 | ||
5ec4e49f | 2674 | destroy_victim_secmap(sbi); |
351df4b2 JK |
2675 | SM_I(sbi)->dirty_info = NULL; |
2676 | kfree(dirty_i); | |
2677 | } | |
2678 | ||
2679 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
2680 | { | |
2681 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
2682 | int i; | |
2683 | ||
2684 | if (!array) | |
2685 | return; | |
2686 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 2687 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
351df4b2 | 2688 | kfree(array[i].sum_blk); |
b7ad7512 CY |
2689 | kfree(array[i].journal); |
2690 | } | |
351df4b2 JK |
2691 | kfree(array); |
2692 | } | |
2693 | ||
2694 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
2695 | { | |
2696 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
2697 | if (!free_i) | |
2698 | return; | |
2699 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
2700 | kvfree(free_i->free_segmap); |
2701 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
2702 | kfree(free_i); |
2703 | } | |
2704 | ||
2705 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
2706 | { | |
2707 | struct sit_info *sit_i = SIT_I(sbi); | |
2708 | unsigned int start; | |
2709 | ||
2710 | if (!sit_i) | |
2711 | return; | |
2712 | ||
2713 | if (sit_i->sentries) { | |
7cd8558b | 2714 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
2715 | kfree(sit_i->sentries[start].cur_valid_map); |
2716 | kfree(sit_i->sentries[start].ckpt_valid_map); | |
a66cdd98 | 2717 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
2718 | } |
2719 | } | |
60a3b782 JK |
2720 | kfree(sit_i->tmp_map); |
2721 | ||
39307a8e JK |
2722 | kvfree(sit_i->sentries); |
2723 | kvfree(sit_i->sec_entries); | |
2724 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
2725 | |
2726 | SM_I(sbi)->sit_info = NULL; | |
2727 | kfree(sit_i->sit_bitmap); | |
2728 | kfree(sit_i); | |
2729 | } | |
2730 | ||
2731 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
2732 | { | |
2733 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 2734 | |
3b03f724 CY |
2735 | if (!sm_info) |
2736 | return; | |
2163d198 | 2737 | destroy_flush_cmd_control(sbi); |
351df4b2 JK |
2738 | destroy_dirty_segmap(sbi); |
2739 | destroy_curseg(sbi); | |
2740 | destroy_free_segmap(sbi); | |
2741 | destroy_sit_info(sbi); | |
2742 | sbi->sm_info = NULL; | |
2743 | kfree(sm_info); | |
2744 | } | |
7fd9e544 JK |
2745 | |
2746 | int __init create_segment_manager_caches(void) | |
2747 | { | |
2748 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 2749 | sizeof(struct discard_entry)); |
7fd9e544 | 2750 | if (!discard_entry_slab) |
184a5cd2 CY |
2751 | goto fail; |
2752 | ||
275b66b0 CY |
2753 | bio_entry_slab = f2fs_kmem_cache_create("bio_entry", |
2754 | sizeof(struct bio_entry)); | |
2755 | if (!bio_entry_slab) | |
6ab2a308 | 2756 | goto destroy_discard_entry; |
275b66b0 | 2757 | |
184a5cd2 | 2758 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
c9ee0085 | 2759 | sizeof(struct sit_entry_set)); |
184a5cd2 | 2760 | if (!sit_entry_set_slab) |
275b66b0 | 2761 | goto destroy_bio_entry; |
88b88a66 JK |
2762 | |
2763 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
2764 | sizeof(struct inmem_pages)); | |
2765 | if (!inmem_entry_slab) | |
2766 | goto destroy_sit_entry_set; | |
7fd9e544 | 2767 | return 0; |
184a5cd2 | 2768 | |
88b88a66 JK |
2769 | destroy_sit_entry_set: |
2770 | kmem_cache_destroy(sit_entry_set_slab); | |
275b66b0 CY |
2771 | destroy_bio_entry: |
2772 | kmem_cache_destroy(bio_entry_slab); | |
6ab2a308 | 2773 | destroy_discard_entry: |
184a5cd2 CY |
2774 | kmem_cache_destroy(discard_entry_slab); |
2775 | fail: | |
2776 | return -ENOMEM; | |
7fd9e544 JK |
2777 | } |
2778 | ||
2779 | void destroy_segment_manager_caches(void) | |
2780 | { | |
184a5cd2 | 2781 | kmem_cache_destroy(sit_entry_set_slab); |
275b66b0 | 2782 | kmem_cache_destroy(bio_entry_slab); |
7fd9e544 | 2783 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 2784 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 2785 | } |