Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
351df4b2 JK |
2 | * fs/f2fs/segment.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/bio.h> | |
14 | #include <linux/blkdev.h> | |
690e4a3e | 15 | #include <linux/prefetch.h> |
6b4afdd7 | 16 | #include <linux/kthread.h> |
74de593a | 17 | #include <linux/swap.h> |
60b99b48 | 18 | #include <linux/timer.h> |
13f00235 JK |
19 | #include <linux/freezer.h> |
20 | #include <linux/sched.h> | |
351df4b2 JK |
21 | |
22 | #include "f2fs.h" | |
23 | #include "segment.h" | |
24 | #include "node.h" | |
13f00235 | 25 | #include "gc.h" |
9e4ded3f | 26 | #include "trace.h" |
6ec178da | 27 | #include <trace/events/f2fs.h> |
351df4b2 | 28 | |
9a7f143a CL |
29 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
30 | ||
7fd9e544 | 31 | static struct kmem_cache *discard_entry_slab; |
eee3f1f5 | 32 | static struct kmem_cache *discard_cmd_slab; |
184a5cd2 | 33 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 34 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 35 | |
f96999c3 JK |
36 | static unsigned long __reverse_ulong(unsigned char *str) |
37 | { | |
38 | unsigned long tmp = 0; | |
39 | int shift = 24, idx = 0; | |
40 | ||
41 | #if BITS_PER_LONG == 64 | |
42 | shift = 56; | |
43 | #endif | |
44 | while (shift >= 0) { | |
45 | tmp |= (unsigned long)str[idx++] << shift; | |
46 | shift -= BITS_PER_BYTE; | |
47 | } | |
48 | return tmp; | |
49 | } | |
50 | ||
9a7f143a CL |
51 | /* |
52 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
53 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
54 | */ | |
55 | static inline unsigned long __reverse_ffs(unsigned long word) | |
56 | { | |
57 | int num = 0; | |
58 | ||
59 | #if BITS_PER_LONG == 64 | |
f96999c3 | 60 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 61 | num += 32; |
f96999c3 | 62 | else |
9a7f143a | 63 | word >>= 32; |
9a7f143a | 64 | #endif |
f96999c3 | 65 | if ((word & 0xffff0000) == 0) |
9a7f143a | 66 | num += 16; |
f96999c3 | 67 | else |
9a7f143a | 68 | word >>= 16; |
f96999c3 JK |
69 | |
70 | if ((word & 0xff00) == 0) | |
9a7f143a | 71 | num += 8; |
f96999c3 | 72 | else |
9a7f143a | 73 | word >>= 8; |
f96999c3 | 74 | |
9a7f143a CL |
75 | if ((word & 0xf0) == 0) |
76 | num += 4; | |
77 | else | |
78 | word >>= 4; | |
f96999c3 | 79 | |
9a7f143a CL |
80 | if ((word & 0xc) == 0) |
81 | num += 2; | |
82 | else | |
83 | word >>= 2; | |
f96999c3 | 84 | |
9a7f143a CL |
85 | if ((word & 0x2) == 0) |
86 | num += 1; | |
87 | return num; | |
88 | } | |
89 | ||
90 | /* | |
e1c42045 | 91 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 92 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
c1286ff4 | 93 | * @size must be integral times of unsigned long. |
9a7f143a | 94 | * Example: |
f96999c3 JK |
95 | * MSB <--> LSB |
96 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
97 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
98 | */ |
99 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
100 | unsigned long size, unsigned long offset) | |
101 | { | |
102 | const unsigned long *p = addr + BIT_WORD(offset); | |
c1286ff4 | 103 | unsigned long result = size; |
9a7f143a | 104 | unsigned long tmp; |
9a7f143a CL |
105 | |
106 | if (offset >= size) | |
107 | return size; | |
108 | ||
c1286ff4 | 109 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 110 | offset %= BITS_PER_LONG; |
c1286ff4 JK |
111 | |
112 | while (1) { | |
113 | if (*p == 0) | |
114 | goto pass; | |
115 | ||
f96999c3 | 116 | tmp = __reverse_ulong((unsigned char *)p); |
c1286ff4 JK |
117 | |
118 | tmp &= ~0UL >> offset; | |
119 | if (size < BITS_PER_LONG) | |
120 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 121 | if (tmp) |
c1286ff4 JK |
122 | goto found; |
123 | pass: | |
124 | if (size <= BITS_PER_LONG) | |
125 | break; | |
9a7f143a | 126 | size -= BITS_PER_LONG; |
c1286ff4 | 127 | offset = 0; |
f96999c3 | 128 | p++; |
9a7f143a | 129 | } |
c1286ff4 JK |
130 | return result; |
131 | found: | |
132 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
133 | } |
134 | ||
135 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
136 | unsigned long size, unsigned long offset) | |
137 | { | |
138 | const unsigned long *p = addr + BIT_WORD(offset); | |
c1286ff4 | 139 | unsigned long result = size; |
9a7f143a | 140 | unsigned long tmp; |
9a7f143a CL |
141 | |
142 | if (offset >= size) | |
143 | return size; | |
144 | ||
c1286ff4 | 145 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 146 | offset %= BITS_PER_LONG; |
c1286ff4 JK |
147 | |
148 | while (1) { | |
149 | if (*p == ~0UL) | |
150 | goto pass; | |
151 | ||
f96999c3 | 152 | tmp = __reverse_ulong((unsigned char *)p); |
c1286ff4 JK |
153 | |
154 | if (offset) | |
155 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
156 | if (size < BITS_PER_LONG) | |
157 | tmp |= ~0UL >> size; | |
f96999c3 | 158 | if (tmp != ~0UL) |
c1286ff4 JK |
159 | goto found; |
160 | pass: | |
161 | if (size <= BITS_PER_LONG) | |
162 | break; | |
9a7f143a | 163 | size -= BITS_PER_LONG; |
c1286ff4 | 164 | offset = 0; |
f96999c3 | 165 | p++; |
9a7f143a | 166 | } |
c1286ff4 JK |
167 | return result; |
168 | found: | |
169 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
170 | } |
171 | ||
13f00235 JK |
172 | bool need_SSR(struct f2fs_sb_info *sbi) |
173 | { | |
174 | int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); | |
175 | int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); | |
176 | int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); | |
177 | ||
178 | if (test_opt(sbi, LFS)) | |
179 | return false; | |
180 | if (sbi->gc_thread && sbi->gc_thread->gc_urgent) | |
181 | return true; | |
182 | ||
183 | return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + | |
353c1624 | 184 | SM_I(sbi)->min_ssr_sections + reserved_sections(sbi)); |
13f00235 JK |
185 | } |
186 | ||
88b88a66 JK |
187 | void register_inmem_page(struct inode *inode, struct page *page) |
188 | { | |
353c1624 | 189 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
88b88a66 JK |
190 | struct f2fs_inode_info *fi = F2FS_I(inode); |
191 | struct inmem_pages *new; | |
9be32d72 | 192 | |
9e4ded3f | 193 | f2fs_trace_pid(page); |
0722b101 | 194 | |
decd36b6 CY |
195 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
196 | SetPagePrivate(page); | |
197 | ||
88b88a66 JK |
198 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
199 | ||
200 | /* add atomic page indices to the list */ | |
201 | new->page = page; | |
202 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 203 | |
88b88a66 JK |
204 | /* increase reference count with clean state */ |
205 | mutex_lock(&fi->inmem_lock); | |
206 | get_page(page); | |
207 | list_add_tail(&new->list, &fi->inmem_pages); | |
353c1624 JK |
208 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
209 | if (list_empty(&fi->inmem_ilist)) | |
210 | list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]); | |
211 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
8dcf2ff7 | 212 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 213 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
214 | |
215 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
216 | } |
217 | ||
c1286ff4 JK |
218 | static int __revoke_inmem_pages(struct inode *inode, |
219 | struct list_head *head, bool drop, bool recover) | |
220 | { | |
221 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
222 | struct inmem_pages *cur, *tmp; | |
223 | int err = 0; | |
224 | ||
225 | list_for_each_entry_safe(cur, tmp, head, list) { | |
226 | struct page *page = cur->page; | |
227 | ||
228 | if (drop) | |
229 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
230 | ||
231 | lock_page(page); | |
232 | ||
233 | if (recover) { | |
234 | struct dnode_of_data dn; | |
235 | struct node_info ni; | |
236 | ||
237 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
13f00235 | 238 | retry: |
c1286ff4 | 239 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
13f00235 JK |
240 | err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
241 | if (err) { | |
242 | if (err == -ENOMEM) { | |
243 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
244 | cond_resched(); | |
245 | goto retry; | |
246 | } | |
c1286ff4 JK |
247 | err = -EAGAIN; |
248 | goto next; | |
249 | } | |
250 | get_node_info(sbi, dn.nid, &ni); | |
251 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
252 | cur->old_addr, ni.version, true, true); | |
253 | f2fs_put_dnode(&dn); | |
254 | } | |
255 | next: | |
256 | /* we don't need to invalidate this in the sccessful status */ | |
257 | if (drop || recover) | |
258 | ClearPageUptodate(page); | |
259 | set_page_private(page, 0); | |
260 | ClearPagePrivate(page); | |
261 | f2fs_put_page(page, 1); | |
262 | ||
263 | list_del(&cur->list); | |
264 | kmem_cache_free(inmem_entry_slab, cur); | |
265 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
266 | } | |
267 | return err; | |
268 | } | |
269 | ||
353c1624 JK |
270 | void drop_inmem_pages_all(struct f2fs_sb_info *sbi) |
271 | { | |
272 | struct list_head *head = &sbi->inode_list[ATOMIC_FILE]; | |
273 | struct inode *inode; | |
274 | struct f2fs_inode_info *fi; | |
275 | next: | |
276 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
277 | if (list_empty(head)) { | |
278 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
279 | return; | |
280 | } | |
281 | fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist); | |
282 | inode = igrab(&fi->vfs_inode); | |
283 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
284 | ||
285 | if (inode) { | |
286 | drop_inmem_pages(inode); | |
287 | iput(inode); | |
288 | } | |
289 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
290 | cond_resched(); | |
291 | goto next; | |
292 | } | |
293 | ||
c1286ff4 JK |
294 | void drop_inmem_pages(struct inode *inode) |
295 | { | |
353c1624 | 296 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
c1286ff4 JK |
297 | struct f2fs_inode_info *fi = F2FS_I(inode); |
298 | ||
c1286ff4 JK |
299 | mutex_lock(&fi->inmem_lock); |
300 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
353c1624 JK |
301 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
302 | if (!list_empty(&fi->inmem_ilist)) | |
303 | list_del_init(&fi->inmem_ilist); | |
304 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
c1286ff4 | 305 | mutex_unlock(&fi->inmem_lock); |
dc8b8cea CY |
306 | |
307 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
13f00235 | 308 | clear_inode_flag(inode, FI_HOT_DATA); |
dc8b8cea | 309 | stat_dec_atomic_write(inode); |
c1286ff4 JK |
310 | } |
311 | ||
13f00235 JK |
312 | void drop_inmem_page(struct inode *inode, struct page *page) |
313 | { | |
314 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
315 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
316 | struct list_head *head = &fi->inmem_pages; | |
317 | struct inmem_pages *cur = NULL; | |
318 | ||
319 | f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page)); | |
320 | ||
321 | mutex_lock(&fi->inmem_lock); | |
322 | list_for_each_entry(cur, head, list) { | |
323 | if (cur->page == page) | |
324 | break; | |
325 | } | |
326 | ||
327 | f2fs_bug_on(sbi, !cur || cur->page != page); | |
328 | list_del(&cur->list); | |
329 | mutex_unlock(&fi->inmem_lock); | |
330 | ||
331 | dec_page_count(sbi, F2FS_INMEM_PAGES); | |
332 | kmem_cache_free(inmem_entry_slab, cur); | |
333 | ||
334 | ClearPageUptodate(page); | |
335 | set_page_private(page, 0); | |
336 | ClearPagePrivate(page); | |
337 | f2fs_put_page(page, 0); | |
338 | ||
339 | trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE); | |
340 | } | |
341 | ||
c1286ff4 JK |
342 | static int __commit_inmem_pages(struct inode *inode, |
343 | struct list_head *revoke_list) | |
88b88a66 JK |
344 | { |
345 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
346 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
347 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 348 | struct f2fs_io_info fio = { |
05ca3632 | 349 | .sbi = sbi, |
353c1624 | 350 | .ino = inode->i_ino, |
88b88a66 | 351 | .type = DATA, |
dc45fd9e | 352 | .op = REQ_OP_WRITE, |
13f00235 JK |
353 | .op_flags = REQ_SYNC | REQ_PRIO, |
354 | .io_type = FS_DATA_IO, | |
88b88a66 | 355 | }; |
13f00235 | 356 | pgoff_t last_idx = ULONG_MAX; |
edb27dee | 357 | int err = 0; |
88b88a66 | 358 | |
88b88a66 | 359 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
c1286ff4 JK |
360 | struct page *page = cur->page; |
361 | ||
362 | lock_page(page); | |
363 | if (page->mapping == inode->i_mapping) { | |
364 | trace_f2fs_commit_inmem_page(page, INMEM); | |
365 | ||
366 | set_page_dirty(page); | |
367 | f2fs_wait_on_page_writeback(page, DATA, true); | |
75bb19d8 | 368 | if (clear_page_dirty_for_io(page)) { |
c1286ff4 | 369 | inode_dec_dirty_pages(inode); |
75bb19d8 CY |
370 | remove_dirty_inode(inode); |
371 | } | |
13f00235 | 372 | retry: |
c1286ff4 | 373 | fio.page = page; |
13f00235 JK |
374 | fio.old_blkaddr = NULL_ADDR; |
375 | fio.encrypted_page = NULL; | |
376 | fio.need_lock = LOCK_DONE; | |
c1286ff4 JK |
377 | err = do_write_data_page(&fio); |
378 | if (err) { | |
13f00235 JK |
379 | if (err == -ENOMEM) { |
380 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
381 | cond_resched(); | |
382 | goto retry; | |
383 | } | |
c1286ff4 JK |
384 | unlock_page(page); |
385 | break; | |
70c640b1 | 386 | } |
c1286ff4 JK |
387 | /* record old blkaddr for revoking */ |
388 | cur->old_addr = fio.old_blkaddr; | |
13f00235 | 389 | last_idx = page->index; |
88b88a66 | 390 | } |
c1286ff4 JK |
391 | unlock_page(page); |
392 | list_move_tail(&cur->list, revoke_list); | |
393 | } | |
decd36b6 | 394 | |
13f00235 JK |
395 | if (last_idx != ULONG_MAX) |
396 | f2fs_submit_merged_write_cond(sbi, inode, 0, last_idx, DATA); | |
c1286ff4 JK |
397 | |
398 | if (!err) | |
399 | __revoke_inmem_pages(inode, revoke_list, false, false); | |
400 | ||
401 | return err; | |
402 | } | |
403 | ||
404 | int commit_inmem_pages(struct inode *inode) | |
405 | { | |
406 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
407 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
408 | struct list_head revoke_list; | |
409 | int err; | |
410 | ||
411 | INIT_LIST_HEAD(&revoke_list); | |
412 | f2fs_balance_fs(sbi, true); | |
413 | f2fs_lock_op(sbi); | |
414 | ||
dc8b8cea CY |
415 | set_inode_flag(inode, FI_ATOMIC_COMMIT); |
416 | ||
c1286ff4 JK |
417 | mutex_lock(&fi->inmem_lock); |
418 | err = __commit_inmem_pages(inode, &revoke_list); | |
419 | if (err) { | |
420 | int ret; | |
421 | /* | |
422 | * try to revoke all committed pages, but still we could fail | |
423 | * due to no memory or other reason, if that happened, EAGAIN | |
424 | * will be returned, which means in such case, transaction is | |
425 | * already not integrity, caller should use journal to do the | |
426 | * recovery or rewrite & commit last transaction. For other | |
427 | * error number, revoking was done by filesystem itself. | |
428 | */ | |
429 | ret = __revoke_inmem_pages(inode, &revoke_list, false, true); | |
430 | if (ret) | |
431 | err = ret; | |
432 | ||
433 | /* drop all uncommitted pages */ | |
434 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
88b88a66 | 435 | } |
353c1624 JK |
436 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
437 | if (!list_empty(&fi->inmem_ilist)) | |
438 | list_del_init(&fi->inmem_ilist); | |
439 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
88b88a66 JK |
440 | mutex_unlock(&fi->inmem_lock); |
441 | ||
dc8b8cea CY |
442 | clear_inode_flag(inode, FI_ATOMIC_COMMIT); |
443 | ||
c1286ff4 | 444 | f2fs_unlock_op(sbi); |
edb27dee | 445 | return err; |
88b88a66 JK |
446 | } |
447 | ||
0a8165d7 | 448 | /* |
351df4b2 JK |
449 | * This function balances dirty node and dentry pages. |
450 | * In addition, it controls garbage collection. | |
451 | */ | |
c1286ff4 | 452 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 453 | { |
c1286ff4 | 454 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
13f00235 JK |
455 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) { |
456 | f2fs_show_injection_info(FAULT_CHECKPOINT); | |
c1286ff4 | 457 | f2fs_stop_checkpoint(sbi, false); |
13f00235 | 458 | } |
c1286ff4 JK |
459 | #endif |
460 | ||
c1286ff4 | 461 | /* balance_fs_bg is able to be pending */ |
13f00235 | 462 | if (need && excess_cached_nats(sbi)) |
c1286ff4 JK |
463 | f2fs_balance_fs_bg(sbi); |
464 | ||
351df4b2 | 465 | /* |
029cd28c JK |
466 | * We should do GC or end up with checkpoint, if there are so many dirty |
467 | * dir/node pages without enough free segments. | |
351df4b2 | 468 | */ |
c1286ff4 | 469 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
351df4b2 | 470 | mutex_lock(&sbi->gc_mutex); |
13f00235 | 471 | f2fs_gc(sbi, false, false, NULL_SEGNO); |
351df4b2 JK |
472 | } |
473 | } | |
474 | ||
4660f9c0 JK |
475 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
476 | { | |
1dcc336b | 477 | /* try to shrink extent cache when there is no enough memory */ |
554df79e JK |
478 | if (!available_free_memory(sbi, EXTENT_CACHE)) |
479 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); | |
1dcc336b | 480 | |
1b38dc8e JK |
481 | /* check the # of cached NAT entries */ |
482 | if (!available_free_memory(sbi, NAT_ENTRIES)) | |
483 | try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
484 | ||
31696580 | 485 | if (!available_free_memory(sbi, FREE_NIDS)) |
c1286ff4 JK |
486 | try_to_free_nids(sbi, MAX_FREE_NIDS); |
487 | else | |
13f00235 | 488 | build_free_nids(sbi, false, false); |
31696580 | 489 | |
13f00235 | 490 | if (!is_idle(sbi) && !excess_dirty_nats(sbi)) |
d1c2c357 JK |
491 | return; |
492 | ||
1b38dc8e JK |
493 | /* checkpoint is the only way to shrink partial cached entries */ |
494 | if (!available_free_memory(sbi, NAT_ENTRIES) || | |
60b99b48 | 495 | !available_free_memory(sbi, INO_ENTRIES) || |
c1286ff4 JK |
496 | excess_prefree_segs(sbi) || |
497 | excess_dirty_nats(sbi) || | |
d1c2c357 | 498 | f2fs_time_over(sbi, CP_TIME)) { |
c1286ff4 JK |
499 | if (test_opt(sbi, DATA_FLUSH)) { |
500 | struct blk_plug plug; | |
501 | ||
502 | blk_start_plug(&plug); | |
503 | sync_dirty_inodes(sbi, FILE_INODE); | |
504 | blk_finish_plug(&plug); | |
505 | } | |
4660f9c0 | 506 | f2fs_sync_fs(sbi->sb, true); |
c1286ff4 JK |
507 | stat_inc_bg_cp_count(sbi->stat_info); |
508 | } | |
4660f9c0 JK |
509 | } |
510 | ||
13f00235 JK |
511 | static int __submit_flush_wait(struct f2fs_sb_info *sbi, |
512 | struct block_device *bdev) | |
07f01079 | 513 | { |
353c1624 | 514 | struct bio *bio = f2fs_bio_alloc(sbi, 0, true); |
07f01079 JK |
515 | int ret; |
516 | ||
dc45fd9e | 517 | bio->bi_rw = REQ_OP_WRITE; |
07f01079 JK |
518 | bio->bi_bdev = bdev; |
519 | ret = submit_bio_wait(WRITE_FLUSH, bio); | |
520 | bio_put(bio); | |
13f00235 JK |
521 | |
522 | trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER), | |
523 | test_opt(sbi, FLUSH_MERGE), ret); | |
07f01079 JK |
524 | return ret; |
525 | } | |
526 | ||
353c1624 | 527 | static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino) |
07f01079 | 528 | { |
353c1624 | 529 | int ret = 0; |
07f01079 JK |
530 | int i; |
531 | ||
353c1624 JK |
532 | if (!sbi->s_ndevs) |
533 | return __submit_flush_wait(sbi, sbi->sb->s_bdev); | |
13f00235 | 534 | |
353c1624 JK |
535 | for (i = 0; i < sbi->s_ndevs; i++) { |
536 | if (!is_dirty_device(sbi, ino, i, FLUSH_INO)) | |
537 | continue; | |
13f00235 JK |
538 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); |
539 | if (ret) | |
540 | break; | |
07f01079 JK |
541 | } |
542 | return ret; | |
543 | } | |
544 | ||
2163d198 | 545 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
546 | { |
547 | struct f2fs_sb_info *sbi = data; | |
eee3f1f5 | 548 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
a688b9d9 | 549 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
6b4afdd7 JK |
550 | repeat: |
551 | if (kthread_should_stop()) | |
552 | return 0; | |
553 | ||
13f00235 JK |
554 | sb_start_intwrite(sbi->sb); |
555 | ||
721bd4d5 | 556 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
557 | struct flush_cmd *cmd, *next; |
558 | int ret; | |
559 | ||
721bd4d5 GZ |
560 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
561 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
562 | ||
353c1624 JK |
563 | cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode); |
564 | ||
565 | ret = submit_flush_wait(sbi, cmd->ino); | |
13f00235 JK |
566 | atomic_inc(&fcc->issued_flush); |
567 | ||
721bd4d5 GZ |
568 | llist_for_each_entry_safe(cmd, next, |
569 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 570 | cmd->ret = ret; |
6b4afdd7 JK |
571 | complete(&cmd->wait); |
572 | } | |
a688b9d9 | 573 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
574 | } |
575 | ||
13f00235 JK |
576 | sb_end_intwrite(sbi->sb); |
577 | ||
a688b9d9 | 578 | wait_event_interruptible(*q, |
721bd4d5 | 579 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
580 | goto repeat; |
581 | } | |
582 | ||
353c1624 | 583 | int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino) |
6b4afdd7 | 584 | { |
eee3f1f5 | 585 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
adf8d90b | 586 | struct flush_cmd cmd; |
13f00235 | 587 | int ret; |
24a9ee0f | 588 | |
0f7b2abd JK |
589 | if (test_opt(sbi, NOBARRIER)) |
590 | return 0; | |
591 | ||
13f00235 | 592 | if (!test_opt(sbi, FLUSH_MERGE)) { |
353c1624 | 593 | ret = submit_flush_wait(sbi, ino); |
13f00235 JK |
594 | atomic_inc(&fcc->issued_flush); |
595 | return ret; | |
596 | } | |
740432f8 | 597 | |
353c1624 JK |
598 | if (atomic_inc_return(&fcc->issing_flush) == 1 || sbi->s_ndevs > 1) { |
599 | ret = submit_flush_wait(sbi, ino); | |
13f00235 JK |
600 | atomic_dec(&fcc->issing_flush); |
601 | ||
602 | atomic_inc(&fcc->issued_flush); | |
740432f8 JK |
603 | return ret; |
604 | } | |
6b4afdd7 | 605 | |
353c1624 | 606 | cmd.ino = ino; |
adf8d90b | 607 | init_completion(&cmd.wait); |
6b4afdd7 | 608 | |
721bd4d5 | 609 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 610 | |
13f00235 JK |
611 | /* update issue_list before we wake up issue_flush thread */ |
612 | smp_mb(); | |
613 | ||
614 | if (waitqueue_active(&fcc->flush_wait_queue)) | |
a688b9d9 | 615 | wake_up(&fcc->flush_wait_queue); |
6b4afdd7 | 616 | |
be4b8492 JK |
617 | if (fcc->f2fs_issue_flush) { |
618 | wait_for_completion(&cmd.wait); | |
13f00235 | 619 | atomic_dec(&fcc->issing_flush); |
be4b8492 | 620 | } else { |
13f00235 JK |
621 | struct llist_node *list; |
622 | ||
623 | list = llist_del_all(&fcc->issue_list); | |
624 | if (!list) { | |
625 | wait_for_completion(&cmd.wait); | |
626 | atomic_dec(&fcc->issing_flush); | |
627 | } else { | |
628 | struct flush_cmd *tmp, *next; | |
629 | ||
353c1624 | 630 | ret = submit_flush_wait(sbi, ino); |
13f00235 JK |
631 | |
632 | llist_for_each_entry_safe(tmp, next, list, llnode) { | |
633 | if (tmp == &cmd) { | |
634 | cmd.ret = ret; | |
635 | atomic_dec(&fcc->issing_flush); | |
636 | continue; | |
637 | } | |
638 | tmp->ret = ret; | |
639 | complete(&tmp->wait); | |
640 | } | |
641 | } | |
be4b8492 | 642 | } |
adf8d90b CY |
643 | |
644 | return cmd.ret; | |
6b4afdd7 JK |
645 | } |
646 | ||
2163d198 GZ |
647 | int create_flush_cmd_control(struct f2fs_sb_info *sbi) |
648 | { | |
649 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
650 | struct flush_cmd_control *fcc; | |
651 | int err = 0; | |
652 | ||
eee3f1f5 JK |
653 | if (SM_I(sbi)->fcc_info) { |
654 | fcc = SM_I(sbi)->fcc_info; | |
13f00235 JK |
655 | if (fcc->f2fs_issue_flush) |
656 | return err; | |
be4b8492 JK |
657 | goto init_thread; |
658 | } | |
659 | ||
2163d198 GZ |
660 | fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); |
661 | if (!fcc) | |
662 | return -ENOMEM; | |
13f00235 JK |
663 | atomic_set(&fcc->issued_flush, 0); |
664 | atomic_set(&fcc->issing_flush, 0); | |
2163d198 | 665 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 666 | init_llist_head(&fcc->issue_list); |
eee3f1f5 | 667 | SM_I(sbi)->fcc_info = fcc; |
13f00235 JK |
668 | if (!test_opt(sbi, FLUSH_MERGE)) |
669 | return err; | |
670 | ||
be4b8492 | 671 | init_thread: |
2163d198 GZ |
672 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
673 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
674 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
675 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
676 | kfree(fcc); | |
eee3f1f5 | 677 | SM_I(sbi)->fcc_info = NULL; |
2163d198 GZ |
678 | return err; |
679 | } | |
2163d198 GZ |
680 | |
681 | return err; | |
682 | } | |
683 | ||
be4b8492 | 684 | void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free) |
2163d198 | 685 | { |
eee3f1f5 | 686 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
2163d198 | 687 | |
be4b8492 JK |
688 | if (fcc && fcc->f2fs_issue_flush) { |
689 | struct task_struct *flush_thread = fcc->f2fs_issue_flush; | |
690 | ||
691 | fcc->f2fs_issue_flush = NULL; | |
692 | kthread_stop(flush_thread); | |
693 | } | |
694 | if (free) { | |
695 | kfree(fcc); | |
eee3f1f5 | 696 | SM_I(sbi)->fcc_info = NULL; |
be4b8492 | 697 | } |
2163d198 GZ |
698 | } |
699 | ||
353c1624 JK |
700 | int f2fs_flush_device_cache(struct f2fs_sb_info *sbi) |
701 | { | |
702 | int ret = 0, i; | |
703 | ||
704 | if (!sbi->s_ndevs) | |
705 | return 0; | |
706 | ||
707 | for (i = 1; i < sbi->s_ndevs; i++) { | |
708 | if (!f2fs_test_bit(i, (char *)&sbi->dirty_device)) | |
709 | continue; | |
710 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); | |
711 | if (ret) | |
712 | break; | |
713 | ||
714 | spin_lock(&sbi->dev_lock); | |
715 | f2fs_clear_bit(i, (char *)&sbi->dirty_device); | |
716 | spin_unlock(&sbi->dev_lock); | |
717 | } | |
718 | ||
719 | return ret; | |
720 | } | |
721 | ||
351df4b2 JK |
722 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
723 | enum dirty_type dirty_type) | |
724 | { | |
725 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
726 | ||
727 | /* need not be added */ | |
728 | if (IS_CURSEG(sbi, segno)) | |
729 | return; | |
730 | ||
731 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
732 | dirty_i->nr_dirty[dirty_type]++; | |
733 | ||
734 | if (dirty_type == DIRTY) { | |
735 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 736 | enum dirty_type t = sentry->type; |
b2f2c390 | 737 | |
ec325b52 JK |
738 | if (unlikely(t >= DIRTY)) { |
739 | f2fs_bug_on(sbi, 1); | |
740 | return; | |
741 | } | |
4625d6aa CL |
742 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
743 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
744 | } |
745 | } | |
746 | ||
747 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
748 | enum dirty_type dirty_type) | |
749 | { | |
750 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
751 | ||
752 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
753 | dirty_i->nr_dirty[dirty_type]--; | |
754 | ||
755 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
756 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
757 | enum dirty_type t = sentry->type; | |
758 | ||
759 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
760 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 761 | |
13f00235 JK |
762 | if (get_valid_blocks(sbi, segno, true) == 0) |
763 | clear_bit(GET_SEC_FROM_SEG(sbi, segno), | |
5ec4e49f | 764 | dirty_i->victim_secmap); |
351df4b2 JK |
765 | } |
766 | } | |
767 | ||
0a8165d7 | 768 | /* |
351df4b2 JK |
769 | * Should not occur error such as -ENOMEM. |
770 | * Adding dirty entry into seglist is not critical operation. | |
771 | * If a given segment is one of current working segments, it won't be added. | |
772 | */ | |
8d8451af | 773 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
774 | { |
775 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
776 | unsigned short valid_blocks; | |
777 | ||
778 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
779 | return; | |
780 | ||
781 | mutex_lock(&dirty_i->seglist_lock); | |
782 | ||
13f00235 | 783 | valid_blocks = get_valid_blocks(sbi, segno, false); |
351df4b2 JK |
784 | |
785 | if (valid_blocks == 0) { | |
786 | __locate_dirty_segment(sbi, segno, PRE); | |
787 | __remove_dirty_segment(sbi, segno, DIRTY); | |
788 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
789 | __locate_dirty_segment(sbi, segno, DIRTY); | |
790 | } else { | |
791 | /* Recovery routine with SSR needs this */ | |
792 | __remove_dirty_segment(sbi, segno, DIRTY); | |
793 | } | |
794 | ||
795 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
796 | } |
797 | ||
13f00235 JK |
798 | static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi, |
799 | struct block_device *bdev, block_t lstart, | |
800 | block_t start, block_t len) | |
401c465b | 801 | { |
13f00235 JK |
802 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
803 | struct list_head *pend_list; | |
eee3f1f5 | 804 | struct discard_cmd *dc; |
401c465b | 805 | |
13f00235 JK |
806 | f2fs_bug_on(sbi, !len); |
807 | ||
808 | pend_list = &dcc->pend_list[plist_idx(len)]; | |
809 | ||
eee3f1f5 JK |
810 | dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS); |
811 | INIT_LIST_HEAD(&dc->list); | |
13f00235 | 812 | dc->bdev = bdev; |
eee3f1f5 | 813 | dc->lstart = lstart; |
13f00235 | 814 | dc->start = start; |
eee3f1f5 | 815 | dc->len = len; |
13f00235 JK |
816 | dc->ref = 0; |
817 | dc->state = D_PREP; | |
818 | dc->error = 0; | |
eee3f1f5 | 819 | init_completion(&dc->wait); |
13f00235 JK |
820 | list_add_tail(&dc->list, pend_list); |
821 | atomic_inc(&dcc->discard_cmd_cnt); | |
822 | dcc->undiscard_blks += len; | |
401c465b | 823 | |
eee3f1f5 | 824 | return dc; |
401c465b JK |
825 | } |
826 | ||
13f00235 JK |
827 | static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi, |
828 | struct block_device *bdev, block_t lstart, | |
829 | block_t start, block_t len, | |
830 | struct rb_node *parent, struct rb_node **p) | |
401c465b | 831 | { |
13f00235 JK |
832 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
833 | struct discard_cmd *dc; | |
401c465b | 834 | |
13f00235 | 835 | dc = __create_discard_cmd(sbi, bdev, lstart, start, len); |
132263dd | 836 | |
13f00235 JK |
837 | rb_link_node(&dc->rb_node, parent, p); |
838 | rb_insert_color(&dc->rb_node, &dcc->root); | |
401c465b | 839 | |
13f00235 JK |
840 | return dc; |
841 | } | |
401c465b | 842 | |
13f00235 JK |
843 | static void __detach_discard_cmd(struct discard_cmd_control *dcc, |
844 | struct discard_cmd *dc) | |
845 | { | |
846 | if (dc->state == D_DONE) | |
847 | atomic_dec(&dcc->issing_discard); | |
848 | ||
849 | list_del(&dc->list); | |
850 | rb_erase(&dc->rb_node, &dcc->root); | |
851 | dcc->undiscard_blks -= dc->len; | |
852 | ||
853 | kmem_cache_free(discard_cmd_slab, dc); | |
854 | ||
855 | atomic_dec(&dcc->discard_cmd_cnt); | |
856 | } | |
857 | ||
858 | static void __remove_discard_cmd(struct f2fs_sb_info *sbi, | |
859 | struct discard_cmd *dc) | |
860 | { | |
861 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
862 | ||
353c1624 JK |
863 | trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len); |
864 | ||
13f00235 JK |
865 | f2fs_bug_on(sbi, dc->ref); |
866 | ||
867 | if (dc->error == -EOPNOTSUPP) | |
868 | dc->error = 0; | |
869 | ||
870 | if (dc->error) | |
871 | f2fs_msg(sbi->sb, KERN_INFO, | |
872 | "Issue discard(%u, %u, %u) failed, ret: %d", | |
873 | dc->lstart, dc->start, dc->len, dc->error); | |
874 | __detach_discard_cmd(dcc, dc); | |
401c465b JK |
875 | } |
876 | ||
eee3f1f5 | 877 | static void f2fs_submit_discard_endio(struct bio *bio) |
401c465b | 878 | { |
eee3f1f5 | 879 | struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; |
401c465b | 880 | |
13f00235 JK |
881 | dc->error = bio->bi_error; |
882 | dc->state = D_DONE; | |
883 | complete_all(&dc->wait); | |
884 | bio_put(bio); | |
401c465b JK |
885 | } |
886 | ||
887 | /* copied from block/blk-lib.c in 4.10-rc1 */ | |
888 | static int __blkdev_issue_discard(struct block_device *bdev, sector_t sector, | |
889 | sector_t nr_sects, gfp_t gfp_mask, int flags, | |
890 | struct bio **biop) | |
891 | { | |
892 | struct request_queue *q = bdev_get_queue(bdev); | |
893 | struct bio *bio = *biop; | |
894 | unsigned int granularity; | |
895 | int op = REQ_WRITE | REQ_DISCARD; | |
896 | int alignment; | |
897 | sector_t bs_mask; | |
898 | ||
899 | if (!q) | |
900 | return -ENXIO; | |
901 | ||
902 | if (!blk_queue_discard(q)) | |
903 | return -EOPNOTSUPP; | |
904 | ||
905 | if (flags & BLKDEV_DISCARD_SECURE) { | |
906 | if (!blk_queue_secdiscard(q)) | |
907 | return -EOPNOTSUPP; | |
908 | op |= REQ_SECURE; | |
909 | } | |
910 | ||
911 | bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1; | |
912 | if ((sector | nr_sects) & bs_mask) | |
913 | return -EINVAL; | |
914 | ||
915 | /* Zero-sector (unknown) and one-sector granularities are the same. */ | |
916 | granularity = max(q->limits.discard_granularity >> 9, 1U); | |
917 | alignment = (bdev_discard_alignment(bdev) >> 9) % granularity; | |
918 | ||
919 | while (nr_sects) { | |
920 | unsigned int req_sects; | |
921 | sector_t end_sect, tmp; | |
922 | ||
923 | /* Make sure bi_size doesn't overflow */ | |
924 | req_sects = min_t(sector_t, nr_sects, UINT_MAX >> 9); | |
925 | ||
926 | /** | |
927 | * If splitting a request, and the next starting sector would be | |
928 | * misaligned, stop the discard at the previous aligned sector. | |
929 | */ | |
930 | end_sect = sector + req_sects; | |
931 | tmp = end_sect; | |
932 | if (req_sects < nr_sects && | |
933 | sector_div(tmp, granularity) != alignment) { | |
934 | end_sect = end_sect - alignment; | |
935 | sector_div(end_sect, granularity); | |
936 | end_sect = end_sect * granularity + alignment; | |
937 | req_sects = end_sect - sector; | |
938 | } | |
939 | ||
940 | if (bio) { | |
13f00235 | 941 | int ret = submit_bio_wait(op, bio); |
401c465b JK |
942 | bio_put(bio); |
943 | if (ret) | |
944 | return ret; | |
945 | } | |
353c1624 | 946 | bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, 1); |
401c465b JK |
947 | bio->bi_iter.bi_sector = sector; |
948 | bio->bi_bdev = bdev; | |
949 | bio_set_op_attrs(bio, op, 0); | |
950 | ||
951 | bio->bi_iter.bi_size = req_sects << 9; | |
952 | nr_sects -= req_sects; | |
953 | sector = end_sect; | |
954 | ||
955 | /* | |
956 | * We can loop for a long time in here, if someone does | |
957 | * full device discards (like mkfs). Be nice and allow | |
958 | * us to schedule out to avoid softlocking if preempt | |
959 | * is disabled. | |
960 | */ | |
961 | cond_resched(); | |
962 | } | |
963 | ||
964 | *biop = bio; | |
965 | return 0; | |
966 | } | |
967 | ||
13f00235 JK |
968 | void __check_sit_bitmap(struct f2fs_sb_info *sbi, |
969 | block_t start, block_t end) | |
970 | { | |
971 | #ifdef CONFIG_F2FS_CHECK_FS | |
972 | struct seg_entry *sentry; | |
973 | unsigned int segno; | |
974 | block_t blk = start; | |
975 | unsigned long offset, size, max_blocks = sbi->blocks_per_seg; | |
976 | unsigned long *map; | |
977 | ||
978 | while (blk < end) { | |
979 | segno = GET_SEGNO(sbi, blk); | |
980 | sentry = get_seg_entry(sbi, segno); | |
981 | offset = GET_BLKOFF_FROM_SEG0(sbi, blk); | |
982 | ||
983 | if (end < START_BLOCK(sbi, segno + 1)) | |
984 | size = GET_BLKOFF_FROM_SEG0(sbi, end); | |
985 | else | |
986 | size = max_blocks; | |
987 | map = (unsigned long *)(sentry->cur_valid_map); | |
988 | offset = __find_rev_next_bit(map, size, offset); | |
989 | f2fs_bug_on(sbi, offset != size); | |
990 | blk = START_BLOCK(sbi, segno + 1); | |
991 | } | |
992 | #endif | |
993 | } | |
994 | ||
401c465b | 995 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ |
13f00235 | 996 | static void __submit_discard_cmd(struct f2fs_sb_info *sbi, |
353c1624 JK |
997 | struct discard_policy *dpolicy, |
998 | struct discard_cmd *dc) | |
401c465b | 999 | { |
13f00235 | 1000 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
353c1624 JK |
1001 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1002 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
401c465b | 1003 | struct bio *bio = NULL; |
353c1624 | 1004 | int flag = dpolicy->sync ? REQ_SYNC : 0; |
13f00235 JK |
1005 | |
1006 | if (dc->state != D_PREP) | |
1007 | return; | |
1008 | ||
1009 | trace_f2fs_issue_discard(dc->bdev, dc->start, dc->len); | |
1010 | ||
1011 | dc->error = __blkdev_issue_discard(dc->bdev, | |
1012 | SECTOR_FROM_BLOCK(dc->start), | |
1013 | SECTOR_FROM_BLOCK(dc->len), | |
1014 | GFP_NOFS, 0, &bio); | |
1015 | if (!dc->error) { | |
1016 | /* should keep before submission to avoid D_DONE right away */ | |
1017 | dc->state = D_SUBMIT; | |
1018 | atomic_inc(&dcc->issued_discard); | |
1019 | atomic_inc(&dcc->issing_discard); | |
1020 | if (bio) { | |
1021 | bio->bi_private = dc; | |
1022 | bio->bi_end_io = f2fs_submit_discard_endio; | |
353c1624 JK |
1023 | submit_bio(flag, bio); |
1024 | list_move_tail(&dc->list, wait_list); | |
13f00235 JK |
1025 | __check_sit_bitmap(sbi, dc->start, dc->start + dc->len); |
1026 | ||
1027 | f2fs_update_iostat(sbi, FS_DISCARD, 1); | |
1028 | } | |
1029 | } else { | |
1030 | __remove_discard_cmd(sbi, dc); | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi, | |
1035 | struct block_device *bdev, block_t lstart, | |
1036 | block_t start, block_t len, | |
1037 | struct rb_node **insert_p, | |
1038 | struct rb_node *insert_parent) | |
1039 | { | |
1040 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
353c1624 | 1041 | struct rb_node **p; |
13f00235 JK |
1042 | struct rb_node *parent = NULL; |
1043 | struct discard_cmd *dc = NULL; | |
1044 | ||
1045 | if (insert_p && insert_parent) { | |
1046 | parent = insert_parent; | |
1047 | p = insert_p; | |
1048 | goto do_insert; | |
1049 | } | |
1050 | ||
1051 | p = __lookup_rb_tree_for_insert(sbi, &dcc->root, &parent, lstart); | |
1052 | do_insert: | |
1053 | dc = __attach_discard_cmd(sbi, bdev, lstart, start, len, parent, p); | |
1054 | if (!dc) | |
1055 | return NULL; | |
1056 | ||
1057 | return dc; | |
1058 | } | |
1059 | ||
1060 | static void __relocate_discard_cmd(struct discard_cmd_control *dcc, | |
1061 | struct discard_cmd *dc) | |
1062 | { | |
1063 | list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]); | |
1064 | } | |
1065 | ||
1066 | static void __punch_discard_cmd(struct f2fs_sb_info *sbi, | |
1067 | struct discard_cmd *dc, block_t blkaddr) | |
1068 | { | |
1069 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1070 | struct discard_info di = dc->di; | |
1071 | bool modified = false; | |
1072 | ||
1073 | if (dc->state == D_DONE || dc->len == 1) { | |
1074 | __remove_discard_cmd(sbi, dc); | |
1075 | return; | |
1076 | } | |
1077 | ||
1078 | dcc->undiscard_blks -= di.len; | |
1079 | ||
1080 | if (blkaddr > di.lstart) { | |
1081 | dc->len = blkaddr - dc->lstart; | |
1082 | dcc->undiscard_blks += dc->len; | |
1083 | __relocate_discard_cmd(dcc, dc); | |
1084 | modified = true; | |
1085 | } | |
1086 | ||
1087 | if (blkaddr < di.lstart + di.len - 1) { | |
1088 | if (modified) { | |
1089 | __insert_discard_tree(sbi, dc->bdev, blkaddr + 1, | |
1090 | di.start + blkaddr + 1 - di.lstart, | |
1091 | di.lstart + di.len - 1 - blkaddr, | |
1092 | NULL, NULL); | |
1093 | } else { | |
1094 | dc->lstart++; | |
1095 | dc->len--; | |
1096 | dc->start++; | |
1097 | dcc->undiscard_blks += dc->len; | |
1098 | __relocate_discard_cmd(dcc, dc); | |
1099 | } | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, | |
1104 | struct block_device *bdev, block_t lstart, | |
1105 | block_t start, block_t len) | |
1106 | { | |
1107 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1108 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
1109 | struct discard_cmd *dc; | |
1110 | struct discard_info di = {0}; | |
1111 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1112 | block_t end = lstart + len; | |
1113 | ||
1114 | mutex_lock(&dcc->cmd_lock); | |
1115 | ||
1116 | dc = (struct discard_cmd *)__lookup_rb_tree_ret(&dcc->root, | |
1117 | NULL, lstart, | |
1118 | (struct rb_entry **)&prev_dc, | |
1119 | (struct rb_entry **)&next_dc, | |
1120 | &insert_p, &insert_parent, true); | |
1121 | if (dc) | |
1122 | prev_dc = dc; | |
1123 | ||
1124 | if (!prev_dc) { | |
1125 | di.lstart = lstart; | |
1126 | di.len = next_dc ? next_dc->lstart - lstart : len; | |
1127 | di.len = min(di.len, len); | |
1128 | di.start = start; | |
1129 | } | |
1130 | ||
1131 | while (1) { | |
1132 | struct rb_node *node; | |
1133 | bool merged = false; | |
1134 | struct discard_cmd *tdc = NULL; | |
1135 | ||
1136 | if (prev_dc) { | |
1137 | di.lstart = prev_dc->lstart + prev_dc->len; | |
1138 | if (di.lstart < lstart) | |
1139 | di.lstart = lstart; | |
1140 | if (di.lstart >= end) | |
1141 | break; | |
1142 | ||
1143 | if (!next_dc || next_dc->lstart > end) | |
1144 | di.len = end - di.lstart; | |
1145 | else | |
1146 | di.len = next_dc->lstart - di.lstart; | |
1147 | di.start = start + di.lstart - lstart; | |
1148 | } | |
1149 | ||
1150 | if (!di.len) | |
1151 | goto next; | |
1152 | ||
1153 | if (prev_dc && prev_dc->state == D_PREP && | |
1154 | prev_dc->bdev == bdev && | |
1155 | __is_discard_back_mergeable(&di, &prev_dc->di)) { | |
1156 | prev_dc->di.len += di.len; | |
1157 | dcc->undiscard_blks += di.len; | |
1158 | __relocate_discard_cmd(dcc, prev_dc); | |
1159 | di = prev_dc->di; | |
1160 | tdc = prev_dc; | |
1161 | merged = true; | |
1162 | } | |
1163 | ||
1164 | if (next_dc && next_dc->state == D_PREP && | |
1165 | next_dc->bdev == bdev && | |
1166 | __is_discard_front_mergeable(&di, &next_dc->di)) { | |
1167 | next_dc->di.lstart = di.lstart; | |
1168 | next_dc->di.len += di.len; | |
1169 | next_dc->di.start = di.start; | |
1170 | dcc->undiscard_blks += di.len; | |
1171 | __relocate_discard_cmd(dcc, next_dc); | |
1172 | if (tdc) | |
1173 | __remove_discard_cmd(sbi, tdc); | |
1174 | merged = true; | |
1175 | } | |
1176 | ||
1177 | if (!merged) { | |
1178 | __insert_discard_tree(sbi, bdev, di.lstart, di.start, | |
1179 | di.len, NULL, NULL); | |
1180 | } | |
1181 | next: | |
1182 | prev_dc = next_dc; | |
1183 | if (!prev_dc) | |
1184 | break; | |
1185 | ||
1186 | node = rb_next(&prev_dc->rb_node); | |
1187 | next_dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1188 | } | |
1189 | ||
1190 | mutex_unlock(&dcc->cmd_lock); | |
1191 | } | |
1192 | ||
1193 | static int __queue_discard_cmd(struct f2fs_sb_info *sbi, | |
1194 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1195 | { | |
132263dd | 1196 | block_t lblkstart = blkstart; |
401c465b | 1197 | |
13f00235 | 1198 | trace_f2fs_queue_discard(bdev, blkstart, blklen); |
401c465b JK |
1199 | |
1200 | if (sbi->s_ndevs) { | |
1201 | int devi = f2fs_target_device_index(sbi, blkstart); | |
1202 | ||
1203 | blkstart -= FDEV(devi).start_blk; | |
1204 | } | |
13f00235 JK |
1205 | __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); |
1206 | return 0; | |
1207 | } | |
1208 | ||
353c1624 JK |
1209 | static void __issue_discard_cmd_range(struct f2fs_sb_info *sbi, |
1210 | struct discard_policy *dpolicy, | |
1211 | unsigned int start, unsigned int end) | |
1212 | { | |
1213 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1214 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
1215 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1216 | struct discard_cmd *dc; | |
1217 | struct blk_plug plug; | |
1218 | int issued; | |
1219 | ||
1220 | next: | |
1221 | issued = 0; | |
1222 | ||
1223 | mutex_lock(&dcc->cmd_lock); | |
1224 | f2fs_bug_on(sbi, !__check_rb_tree_consistence(sbi, &dcc->root)); | |
1225 | ||
1226 | dc = (struct discard_cmd *)__lookup_rb_tree_ret(&dcc->root, | |
1227 | NULL, start, | |
1228 | (struct rb_entry **)&prev_dc, | |
1229 | (struct rb_entry **)&next_dc, | |
1230 | &insert_p, &insert_parent, true); | |
1231 | if (!dc) | |
1232 | dc = next_dc; | |
1233 | ||
1234 | blk_start_plug(&plug); | |
1235 | ||
1236 | while (dc && dc->lstart <= end) { | |
1237 | struct rb_node *node; | |
1238 | ||
1239 | if (dc->len < dpolicy->granularity) | |
1240 | goto skip; | |
1241 | ||
1242 | if (dc->state != D_PREP) { | |
1243 | list_move_tail(&dc->list, &dcc->fstrim_list); | |
1244 | goto skip; | |
1245 | } | |
1246 | ||
1247 | __submit_discard_cmd(sbi, dpolicy, dc); | |
1248 | ||
1249 | if (++issued >= dpolicy->max_requests) { | |
1250 | start = dc->lstart + dc->len; | |
1251 | ||
1252 | blk_finish_plug(&plug); | |
1253 | mutex_unlock(&dcc->cmd_lock); | |
1254 | ||
1255 | schedule(); | |
1256 | ||
1257 | goto next; | |
1258 | } | |
1259 | skip: | |
1260 | node = rb_next(&dc->rb_node); | |
1261 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1262 | ||
1263 | if (fatal_signal_pending(current)) | |
1264 | break; | |
1265 | } | |
1266 | ||
1267 | blk_finish_plug(&plug); | |
1268 | mutex_unlock(&dcc->cmd_lock); | |
1269 | } | |
1270 | ||
1271 | static int __issue_discard_cmd(struct f2fs_sb_info *sbi, | |
1272 | struct discard_policy *dpolicy) | |
13f00235 JK |
1273 | { |
1274 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1275 | struct list_head *pend_list; | |
1276 | struct discard_cmd *dc, *tmp; | |
1277 | struct blk_plug plug; | |
353c1624 | 1278 | int i, iter = 0, issued = 0; |
13f00235 JK |
1279 | bool io_interrupted = false; |
1280 | ||
353c1624 JK |
1281 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { |
1282 | if (i + 1 < dpolicy->granularity) | |
1283 | break; | |
13f00235 | 1284 | pend_list = &dcc->pend_list[i]; |
353c1624 JK |
1285 | |
1286 | mutex_lock(&dcc->cmd_lock); | |
1287 | f2fs_bug_on(sbi, !__check_rb_tree_consistence(sbi, &dcc->root)); | |
1288 | blk_start_plug(&plug); | |
13f00235 JK |
1289 | list_for_each_entry_safe(dc, tmp, pend_list, list) { |
1290 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1291 | ||
353c1624 JK |
1292 | if (dpolicy->io_aware && i < dpolicy->io_aware_gran && |
1293 | !is_idle(sbi)) { | |
13f00235 | 1294 | io_interrupted = true; |
353c1624 | 1295 | goto skip; |
13f00235 | 1296 | } |
401c465b | 1297 | |
353c1624 JK |
1298 | __submit_discard_cmd(sbi, dpolicy, dc); |
1299 | issued++; | |
1300 | skip: | |
1301 | if (++iter >= dpolicy->max_requests) | |
1302 | break; | |
13f00235 | 1303 | } |
353c1624 JK |
1304 | blk_finish_plug(&plug); |
1305 | mutex_unlock(&dcc->cmd_lock); | |
1306 | ||
1307 | if (iter >= dpolicy->max_requests) | |
1308 | break; | |
401c465b | 1309 | } |
13f00235 JK |
1310 | |
1311 | if (!issued && io_interrupted) | |
1312 | issued = -1; | |
1313 | ||
1314 | return issued; | |
1315 | } | |
1316 | ||
353c1624 | 1317 | static bool __drop_discard_cmd(struct f2fs_sb_info *sbi) |
13f00235 JK |
1318 | { |
1319 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1320 | struct list_head *pend_list; | |
1321 | struct discard_cmd *dc, *tmp; | |
1322 | int i; | |
353c1624 | 1323 | bool dropped = false; |
13f00235 JK |
1324 | |
1325 | mutex_lock(&dcc->cmd_lock); | |
1326 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { | |
1327 | pend_list = &dcc->pend_list[i]; | |
1328 | list_for_each_entry_safe(dc, tmp, pend_list, list) { | |
1329 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1330 | __remove_discard_cmd(sbi, dc); | |
353c1624 | 1331 | dropped = true; |
13f00235 JK |
1332 | } |
1333 | } | |
1334 | mutex_unlock(&dcc->cmd_lock); | |
353c1624 JK |
1335 | |
1336 | return dropped; | |
13f00235 JK |
1337 | } |
1338 | ||
353c1624 | 1339 | static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi, |
13f00235 JK |
1340 | struct discard_cmd *dc) |
1341 | { | |
1342 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
353c1624 | 1343 | unsigned int len = 0; |
13f00235 JK |
1344 | |
1345 | wait_for_completion_io(&dc->wait); | |
1346 | mutex_lock(&dcc->cmd_lock); | |
1347 | f2fs_bug_on(sbi, dc->state != D_DONE); | |
1348 | dc->ref--; | |
353c1624 JK |
1349 | if (!dc->ref) { |
1350 | if (!dc->error) | |
1351 | len = dc->len; | |
13f00235 | 1352 | __remove_discard_cmd(sbi, dc); |
353c1624 | 1353 | } |
13f00235 | 1354 | mutex_unlock(&dcc->cmd_lock); |
353c1624 JK |
1355 | |
1356 | return len; | |
13f00235 JK |
1357 | } |
1358 | ||
353c1624 JK |
1359 | static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi, |
1360 | struct discard_policy *dpolicy, | |
1361 | block_t start, block_t end) | |
13f00235 JK |
1362 | { |
1363 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
353c1624 JK |
1364 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1365 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
13f00235 JK |
1366 | struct discard_cmd *dc, *tmp; |
1367 | bool need_wait; | |
353c1624 | 1368 | unsigned int trimmed = 0; |
13f00235 JK |
1369 | |
1370 | next: | |
1371 | need_wait = false; | |
1372 | ||
1373 | mutex_lock(&dcc->cmd_lock); | |
1374 | list_for_each_entry_safe(dc, tmp, wait_list, list) { | |
353c1624 JK |
1375 | if (dc->lstart + dc->len <= start || end <= dc->lstart) |
1376 | continue; | |
1377 | if (dc->len < dpolicy->granularity) | |
1378 | continue; | |
1379 | if (dc->state == D_DONE && !dc->ref) { | |
13f00235 | 1380 | wait_for_completion_io(&dc->wait); |
353c1624 JK |
1381 | if (!dc->error) |
1382 | trimmed += dc->len; | |
13f00235 JK |
1383 | __remove_discard_cmd(sbi, dc); |
1384 | } else { | |
1385 | dc->ref++; | |
1386 | need_wait = true; | |
1387 | break; | |
1388 | } | |
1389 | } | |
1390 | mutex_unlock(&dcc->cmd_lock); | |
1391 | ||
1392 | if (need_wait) { | |
353c1624 | 1393 | trimmed += __wait_one_discard_bio(sbi, dc); |
13f00235 JK |
1394 | goto next; |
1395 | } | |
353c1624 JK |
1396 | |
1397 | return trimmed; | |
1398 | } | |
1399 | ||
1400 | static void __wait_all_discard_cmd(struct f2fs_sb_info *sbi, | |
1401 | struct discard_policy *dpolicy) | |
1402 | { | |
1403 | __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX); | |
13f00235 JK |
1404 | } |
1405 | ||
1406 | /* This should be covered by global mutex, &sit_i->sentry_lock */ | |
1407 | void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) | |
1408 | { | |
1409 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1410 | struct discard_cmd *dc; | |
1411 | bool need_wait = false; | |
1412 | ||
1413 | mutex_lock(&dcc->cmd_lock); | |
1414 | dc = (struct discard_cmd *)__lookup_rb_tree(&dcc->root, NULL, blkaddr); | |
1415 | if (dc) { | |
1416 | if (dc->state == D_PREP) { | |
1417 | __punch_discard_cmd(sbi, dc, blkaddr); | |
1418 | } else { | |
1419 | dc->ref++; | |
1420 | need_wait = true; | |
1421 | } | |
1422 | } | |
1423 | mutex_unlock(&dcc->cmd_lock); | |
1424 | ||
1425 | if (need_wait) | |
1426 | __wait_one_discard_bio(sbi, dc); | |
1427 | } | |
1428 | ||
1429 | void stop_discard_thread(struct f2fs_sb_info *sbi) | |
1430 | { | |
1431 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1432 | ||
1433 | if (dcc && dcc->f2fs_issue_discard) { | |
1434 | struct task_struct *discard_thread = dcc->f2fs_issue_discard; | |
1435 | ||
1436 | dcc->f2fs_issue_discard = NULL; | |
1437 | kthread_stop(discard_thread); | |
1438 | } | |
1439 | } | |
1440 | ||
353c1624 JK |
1441 | /* This comes from f2fs_put_super */ |
1442 | bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi) | |
13f00235 JK |
1443 | { |
1444 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
353c1624 JK |
1445 | struct discard_policy dpolicy; |
1446 | bool dropped; | |
13f00235 | 1447 | |
353c1624 JK |
1448 | init_discard_policy(&dpolicy, DPOLICY_UMOUNT, dcc->discard_granularity); |
1449 | __issue_discard_cmd(sbi, &dpolicy); | |
1450 | dropped = __drop_discard_cmd(sbi); | |
1451 | __wait_all_discard_cmd(sbi, &dpolicy); | |
1452 | ||
1453 | return dropped; | |
13f00235 JK |
1454 | } |
1455 | ||
1456 | static int issue_discard_thread(void *data) | |
1457 | { | |
1458 | struct f2fs_sb_info *sbi = data; | |
1459 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1460 | wait_queue_head_t *q = &dcc->discard_wait_queue; | |
353c1624 | 1461 | struct discard_policy dpolicy; |
13f00235 JK |
1462 | unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME; |
1463 | int issued; | |
1464 | ||
1465 | set_freezable(); | |
1466 | ||
1467 | do { | |
353c1624 JK |
1468 | init_discard_policy(&dpolicy, DPOLICY_BG, |
1469 | dcc->discard_granularity); | |
1470 | ||
13f00235 JK |
1471 | wait_event_interruptible_timeout(*q, |
1472 | kthread_should_stop() || freezing(current) || | |
1473 | dcc->discard_wake, | |
1474 | msecs_to_jiffies(wait_ms)); | |
1475 | if (try_to_freeze()) | |
1476 | continue; | |
1477 | if (kthread_should_stop()) | |
1478 | return 0; | |
1479 | ||
1480 | if (dcc->discard_wake) { | |
1481 | dcc->discard_wake = 0; | |
1482 | if (sbi->gc_thread && sbi->gc_thread->gc_urgent) | |
353c1624 JK |
1483 | init_discard_policy(&dpolicy, |
1484 | DPOLICY_FORCE, 1); | |
13f00235 JK |
1485 | } |
1486 | ||
1487 | sb_start_intwrite(sbi->sb); | |
1488 | ||
353c1624 | 1489 | issued = __issue_discard_cmd(sbi, &dpolicy); |
13f00235 | 1490 | if (issued) { |
353c1624 JK |
1491 | __wait_all_discard_cmd(sbi, &dpolicy); |
1492 | wait_ms = dpolicy.min_interval; | |
13f00235 | 1493 | } else { |
353c1624 | 1494 | wait_ms = dpolicy.max_interval; |
13f00235 JK |
1495 | } |
1496 | ||
1497 | sb_end_intwrite(sbi->sb); | |
1498 | ||
1499 | } while (!kthread_should_stop()); | |
1500 | return 0; | |
401c465b JK |
1501 | } |
1502 | ||
0573aa06 | 1503 | #ifdef CONFIG_BLK_DEV_ZONED |
07f01079 JK |
1504 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
1505 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
0573aa06 | 1506 | { |
13f00235 JK |
1507 | sector_t sector, nr_sects; |
1508 | block_t lblkstart = blkstart; | |
07f01079 | 1509 | int devi = 0; |
0573aa06 | 1510 | |
07f01079 JK |
1511 | if (sbi->s_ndevs) { |
1512 | devi = f2fs_target_device_index(sbi, blkstart); | |
1513 | blkstart -= FDEV(devi).start_blk; | |
1514 | } | |
0573aa06 DLM |
1515 | |
1516 | /* | |
1517 | * We need to know the type of the zone: for conventional zones, | |
1518 | * use regular discard if the drive supports it. For sequential | |
1519 | * zones, reset the zone write pointer. | |
1520 | */ | |
07f01079 | 1521 | switch (get_blkz_type(sbi, bdev, blkstart)) { |
0573aa06 DLM |
1522 | |
1523 | case BLK_ZONE_TYPE_CONVENTIONAL: | |
1524 | if (!blk_queue_discard(bdev_get_queue(bdev))) | |
1525 | return 0; | |
13f00235 | 1526 | return __queue_discard_cmd(sbi, bdev, lblkstart, blklen); |
0573aa06 DLM |
1527 | case BLK_ZONE_TYPE_SEQWRITE_REQ: |
1528 | case BLK_ZONE_TYPE_SEQWRITE_PREF: | |
13f00235 JK |
1529 | sector = SECTOR_FROM_BLOCK(blkstart); |
1530 | nr_sects = SECTOR_FROM_BLOCK(blklen); | |
1531 | ||
1532 | if (sector & (bdev_zone_sectors(bdev) - 1) || | |
1533 | nr_sects != bdev_zone_sectors(bdev)) { | |
1534 | f2fs_msg(sbi->sb, KERN_INFO, | |
1535 | "(%d) %s: Unaligned discard attempted (block %x + %x)", | |
1536 | devi, sbi->s_ndevs ? FDEV(devi).path: "", | |
1537 | blkstart, blklen); | |
1538 | return -EIO; | |
1539 | } | |
1540 | trace_f2fs_issue_reset_zone(bdev, blkstart); | |
0573aa06 DLM |
1541 | return blkdev_reset_zones(bdev, sector, |
1542 | nr_sects, GFP_NOFS); | |
1543 | default: | |
1544 | /* Unknown zone type: broken device ? */ | |
1545 | return -EIO; | |
1546 | } | |
1547 | } | |
1548 | #endif | |
1549 | ||
07f01079 JK |
1550 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
1551 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
37208879 | 1552 | { |
07f01079 JK |
1553 | #ifdef CONFIG_BLK_DEV_ZONED |
1554 | if (f2fs_sb_mounted_blkzoned(sbi->sb) && | |
1555 | bdev_zoned_model(bdev) != BLK_ZONED_NONE) | |
1556 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); | |
1557 | #endif | |
13f00235 | 1558 | return __queue_discard_cmd(sbi, bdev, blkstart, blklen); |
07f01079 JK |
1559 | } |
1560 | ||
1561 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, | |
1562 | block_t blkstart, block_t blklen) | |
1563 | { | |
1564 | sector_t start = blkstart, len = 0; | |
1565 | struct block_device *bdev; | |
a66cdd98 JK |
1566 | struct seg_entry *se; |
1567 | unsigned int offset; | |
1568 | block_t i; | |
07f01079 JK |
1569 | int err = 0; |
1570 | ||
1571 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
1572 | ||
1573 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
1574 | if (i != start) { | |
1575 | struct block_device *bdev2 = | |
1576 | f2fs_target_device(sbi, i, NULL); | |
1577 | ||
1578 | if (bdev2 != bdev) { | |
1579 | err = __issue_discard_async(sbi, bdev, | |
1580 | start, len); | |
1581 | if (err) | |
1582 | return err; | |
1583 | bdev = bdev2; | |
1584 | start = i; | |
1585 | len = 0; | |
1586 | } | |
1587 | } | |
a66cdd98 | 1588 | |
a66cdd98 JK |
1589 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
1590 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
1591 | ||
1592 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
1593 | sbi->discard_blks--; | |
1594 | } | |
0573aa06 | 1595 | |
07f01079 JK |
1596 | if (len) |
1597 | err = __issue_discard_async(sbi, bdev, start, len); | |
07f01079 | 1598 | return err; |
1e87a78d JK |
1599 | } |
1600 | ||
556f5ba3 JK |
1601 | static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc, |
1602 | bool check_only) | |
adf4983b | 1603 | { |
b2955550 JK |
1604 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
1605 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 1606 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
1607 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
1608 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 1609 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 1610 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 1611 | unsigned int start = 0, end = -1; |
13f00235 JK |
1612 | bool force = (cpc->reason & CP_DISCARD); |
1613 | struct discard_entry *de = NULL; | |
1614 | struct list_head *head = &SM_I(sbi)->dcc_info->entry_list; | |
b2955550 JK |
1615 | int i; |
1616 | ||
c1286ff4 | 1617 | if (se->valid_blocks == max_blocks || !f2fs_discard_en(sbi)) |
556f5ba3 | 1618 | return false; |
b2955550 | 1619 | |
a66cdd98 JK |
1620 | if (!force) { |
1621 | if (!test_opt(sbi, DISCARD) || !se->valid_blocks || | |
13f00235 JK |
1622 | SM_I(sbi)->dcc_info->nr_discards >= |
1623 | SM_I(sbi)->dcc_info->max_discards) | |
556f5ba3 | 1624 | return false; |
4b2fecc8 JK |
1625 | } |
1626 | ||
b2955550 JK |
1627 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
1628 | for (i = 0; i < entries; i++) | |
a66cdd98 | 1629 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 1630 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 1631 | |
13f00235 JK |
1632 | while (force || SM_I(sbi)->dcc_info->nr_discards <= |
1633 | SM_I(sbi)->dcc_info->max_discards) { | |
b2955550 JK |
1634 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
1635 | if (start >= max_blocks) | |
1636 | break; | |
1637 | ||
1638 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c1286ff4 JK |
1639 | if (force && start && end != max_blocks |
1640 | && (end - start) < cpc->trim_minlen) | |
1641 | continue; | |
1642 | ||
556f5ba3 JK |
1643 | if (check_only) |
1644 | return true; | |
1645 | ||
13f00235 JK |
1646 | if (!de) { |
1647 | de = f2fs_kmem_cache_alloc(discard_entry_slab, | |
1648 | GFP_F2FS_ZERO); | |
1649 | de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start); | |
1650 | list_add_tail(&de->list, head); | |
1651 | } | |
1652 | ||
1653 | for (i = start; i < end; i++) | |
1654 | __set_bit_le(i, (void *)de->discard_map); | |
1655 | ||
1656 | SM_I(sbi)->dcc_info->nr_discards += end - start; | |
b2955550 | 1657 | } |
556f5ba3 | 1658 | return false; |
b2955550 JK |
1659 | } |
1660 | ||
4b2fecc8 JK |
1661 | void release_discard_addrs(struct f2fs_sb_info *sbi) |
1662 | { | |
13f00235 | 1663 | struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list); |
4b2fecc8 JK |
1664 | struct discard_entry *entry, *this; |
1665 | ||
1666 | /* drop caches */ | |
1667 | list_for_each_entry_safe(entry, this, head, list) { | |
1668 | list_del(&entry->list); | |
1669 | kmem_cache_free(discard_entry_slab, entry); | |
1670 | } | |
1671 | } | |
1672 | ||
0a8165d7 | 1673 | /* |
351df4b2 JK |
1674 | * Should call clear_prefree_segments after checkpoint is done. |
1675 | */ | |
1676 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
1677 | { | |
1678 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 1679 | unsigned int segno; |
351df4b2 JK |
1680 | |
1681 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 1682 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 1683 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
1684 | mutex_unlock(&dirty_i->seglist_lock); |
1685 | } | |
1686 | ||
836b5a63 | 1687 | void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 | 1688 | { |
13f00235 JK |
1689 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
1690 | struct list_head *head = &dcc->entry_list; | |
2d7b822a | 1691 | struct discard_entry *entry, *this; |
351df4b2 | 1692 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 1693 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 1694 | unsigned int start = 0, end = -1; |
c1286ff4 | 1695 | unsigned int secno, start_segno; |
13f00235 | 1696 | bool force = (cpc->reason & CP_DISCARD); |
401c465b | 1697 | |
351df4b2 | 1698 | mutex_lock(&dirty_i->seglist_lock); |
29e59c14 | 1699 | |
351df4b2 | 1700 | while (1) { |
29e59c14 | 1701 | int i; |
7cd8558b JK |
1702 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
1703 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 1704 | break; |
7cd8558b JK |
1705 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
1706 | start + 1); | |
29e59c14 CL |
1707 | |
1708 | for (i = start; i < end; i++) | |
1709 | clear_bit(i, prefree_map); | |
1710 | ||
1711 | dirty_i->nr_dirty[PRE] -= end - start; | |
1712 | ||
c70e14cd | 1713 | if (!test_opt(sbi, DISCARD)) |
29e59c14 | 1714 | continue; |
351df4b2 | 1715 | |
c70e14cd YH |
1716 | if (force && start >= cpc->trim_start && |
1717 | (end - 1) <= cpc->trim_end) | |
1718 | continue; | |
1719 | ||
c1286ff4 JK |
1720 | if (!test_opt(sbi, LFS) || sbi->segs_per_sec == 1) { |
1721 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), | |
37208879 | 1722 | (end - start) << sbi->log_blocks_per_seg); |
c1286ff4 JK |
1723 | continue; |
1724 | } | |
1725 | next: | |
13f00235 JK |
1726 | secno = GET_SEC_FROM_SEG(sbi, start); |
1727 | start_segno = GET_SEG_FROM_SEC(sbi, secno); | |
c1286ff4 | 1728 | if (!IS_CURSEC(sbi, secno) && |
13f00235 | 1729 | !get_valid_blocks(sbi, start, true)) |
c1286ff4 JK |
1730 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), |
1731 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
1732 | ||
1733 | start = start_segno + sbi->segs_per_sec; | |
1734 | if (start < end) | |
1735 | goto next; | |
13f00235 JK |
1736 | else |
1737 | end = start - 1; | |
351df4b2 JK |
1738 | } |
1739 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
1740 | |
1741 | /* send small discards */ | |
2d7b822a | 1742 | list_for_each_entry_safe(entry, this, head, list) { |
13f00235 JK |
1743 | unsigned int cur_pos = 0, next_pos, len, total_len = 0; |
1744 | bool is_valid = test_bit_le(0, entry->discard_map); | |
1745 | ||
1746 | find_next: | |
1747 | if (is_valid) { | |
1748 | next_pos = find_next_zero_bit_le(entry->discard_map, | |
1749 | sbi->blocks_per_seg, cur_pos); | |
1750 | len = next_pos - cur_pos; | |
1751 | ||
1752 | if (f2fs_sb_mounted_blkzoned(sbi->sb) || | |
1753 | (force && len < cpc->trim_minlen)) | |
1754 | goto skip; | |
1755 | ||
1756 | f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, | |
1757 | len); | |
13f00235 JK |
1758 | total_len += len; |
1759 | } else { | |
1760 | next_pos = find_next_bit_le(entry->discard_map, | |
1761 | sbi->blocks_per_seg, cur_pos); | |
1762 | } | |
836b5a63 | 1763 | skip: |
13f00235 JK |
1764 | cur_pos = next_pos; |
1765 | is_valid = !is_valid; | |
1766 | ||
1767 | if (cur_pos < sbi->blocks_per_seg) | |
1768 | goto find_next; | |
1769 | ||
b2955550 | 1770 | list_del(&entry->list); |
13f00235 | 1771 | dcc->nr_discards -= total_len; |
b2955550 JK |
1772 | kmem_cache_free(discard_entry_slab, entry); |
1773 | } | |
401c465b | 1774 | |
13f00235 JK |
1775 | wake_up_discard_thread(sbi, false); |
1776 | } | |
1777 | ||
353c1624 JK |
1778 | void init_discard_policy(struct discard_policy *dpolicy, |
1779 | int discard_type, unsigned int granularity) | |
1780 | { | |
1781 | /* common policy */ | |
1782 | dpolicy->type = discard_type; | |
1783 | dpolicy->sync = true; | |
1784 | dpolicy->granularity = granularity; | |
1785 | ||
1786 | if (discard_type == DPOLICY_BG) { | |
1787 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1788 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; | |
1789 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1790 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
1791 | dpolicy->io_aware = true; | |
1792 | } else if (discard_type == DPOLICY_FORCE) { | |
1793 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1794 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; | |
1795 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1796 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
1797 | dpolicy->io_aware = true; | |
1798 | } else if (discard_type == DPOLICY_FSTRIM) { | |
1799 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1800 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
1801 | dpolicy->io_aware = false; | |
1802 | } else if (discard_type == DPOLICY_UMOUNT) { | |
1803 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1804 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
1805 | dpolicy->io_aware = false; | |
1806 | } | |
1807 | } | |
1808 | ||
13f00235 JK |
1809 | static int create_discard_cmd_control(struct f2fs_sb_info *sbi) |
1810 | { | |
1811 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
1812 | struct discard_cmd_control *dcc; | |
1813 | int err = 0, i; | |
1814 | ||
1815 | if (SM_I(sbi)->dcc_info) { | |
1816 | dcc = SM_I(sbi)->dcc_info; | |
1817 | goto init_thread; | |
1818 | } | |
1819 | ||
1820 | dcc = kzalloc(sizeof(struct discard_cmd_control), GFP_KERNEL); | |
1821 | if (!dcc) | |
1822 | return -ENOMEM; | |
1823 | ||
1824 | dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY; | |
1825 | INIT_LIST_HEAD(&dcc->entry_list); | |
353c1624 | 1826 | for (i = 0; i < MAX_PLIST_NUM; i++) |
13f00235 | 1827 | INIT_LIST_HEAD(&dcc->pend_list[i]); |
13f00235 | 1828 | INIT_LIST_HEAD(&dcc->wait_list); |
353c1624 | 1829 | INIT_LIST_HEAD(&dcc->fstrim_list); |
13f00235 JK |
1830 | mutex_init(&dcc->cmd_lock); |
1831 | atomic_set(&dcc->issued_discard, 0); | |
1832 | atomic_set(&dcc->issing_discard, 0); | |
1833 | atomic_set(&dcc->discard_cmd_cnt, 0); | |
1834 | dcc->nr_discards = 0; | |
1835 | dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg; | |
1836 | dcc->undiscard_blks = 0; | |
1837 | dcc->root = RB_ROOT; | |
1838 | ||
1839 | init_waitqueue_head(&dcc->discard_wait_queue); | |
1840 | SM_I(sbi)->dcc_info = dcc; | |
1841 | init_thread: | |
1842 | dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi, | |
1843 | "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev)); | |
1844 | if (IS_ERR(dcc->f2fs_issue_discard)) { | |
1845 | err = PTR_ERR(dcc->f2fs_issue_discard); | |
1846 | kfree(dcc); | |
1847 | SM_I(sbi)->dcc_info = NULL; | |
1848 | return err; | |
1849 | } | |
1850 | ||
1851 | return err; | |
1852 | } | |
1853 | ||
1854 | static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi) | |
1855 | { | |
1856 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1857 | ||
1858 | if (!dcc) | |
1859 | return; | |
1860 | ||
1861 | stop_discard_thread(sbi); | |
1862 | ||
1863 | kfree(dcc); | |
1864 | SM_I(sbi)->dcc_info = NULL; | |
351df4b2 JK |
1865 | } |
1866 | ||
184a5cd2 | 1867 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
1868 | { |
1869 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
1870 | |
1871 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 1872 | sit_i->dirty_sentries++; |
184a5cd2 CY |
1873 | return false; |
1874 | } | |
1875 | ||
1876 | return true; | |
351df4b2 JK |
1877 | } |
1878 | ||
1879 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
1880 | unsigned int segno, int modified) | |
1881 | { | |
1882 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
1883 | se->type = type; | |
1884 | if (modified) | |
1885 | __mark_sit_entry_dirty(sbi, segno); | |
1886 | } | |
1887 | ||
1888 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
1889 | { | |
1890 | struct seg_entry *se; | |
1891 | unsigned int segno, offset; | |
1892 | long int new_vblocks; | |
13f00235 JK |
1893 | bool exist; |
1894 | #ifdef CONFIG_F2FS_CHECK_FS | |
1895 | bool mir_exist; | |
1896 | #endif | |
351df4b2 JK |
1897 | |
1898 | segno = GET_SEGNO(sbi, blkaddr); | |
1899 | ||
1900 | se = get_seg_entry(sbi, segno); | |
1901 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 1902 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 1903 | |
9850cf4a | 1904 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
1905 | (new_vblocks > sbi->blocks_per_seg))); |
1906 | ||
1907 | se->valid_blocks = new_vblocks; | |
1908 | se->mtime = get_mtime(sbi); | |
1909 | SIT_I(sbi)->max_mtime = se->mtime; | |
1910 | ||
1911 | /* Update valid block bitmap */ | |
1912 | if (del > 0) { | |
13f00235 | 1913 | exist = f2fs_test_and_set_bit(offset, se->cur_valid_map); |
dd5804b2 | 1914 | #ifdef CONFIG_F2FS_CHECK_FS |
13f00235 JK |
1915 | mir_exist = f2fs_test_and_set_bit(offset, |
1916 | se->cur_valid_map_mir); | |
1917 | if (unlikely(exist != mir_exist)) { | |
1918 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
1919 | "when setting bitmap, blk:%u, old bit:%d", | |
1920 | blkaddr, exist); | |
05796763 | 1921 | f2fs_bug_on(sbi, 1); |
13f00235 | 1922 | } |
dd5804b2 | 1923 | #endif |
13f00235 JK |
1924 | if (unlikely(exist)) { |
1925 | f2fs_msg(sbi->sb, KERN_ERR, | |
1926 | "Bitmap was wrongly set, blk:%u", blkaddr); | |
1927 | f2fs_bug_on(sbi, 1); | |
1928 | se->valid_blocks--; | |
1929 | del = 0; | |
dd5804b2 | 1930 | } |
13f00235 | 1931 | |
c1286ff4 JK |
1932 | if (f2fs_discard_en(sbi) && |
1933 | !f2fs_test_and_set_bit(offset, se->discard_map)) | |
a66cdd98 | 1934 | sbi->discard_blks--; |
13f00235 JK |
1935 | |
1936 | /* don't overwrite by SSR to keep node chain */ | |
1937 | if (se->type == CURSEG_WARM_NODE) { | |
1938 | if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map)) | |
1939 | se->ckpt_valid_blocks++; | |
1940 | } | |
351df4b2 | 1941 | } else { |
13f00235 | 1942 | exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map); |
dd5804b2 | 1943 | #ifdef CONFIG_F2FS_CHECK_FS |
13f00235 JK |
1944 | mir_exist = f2fs_test_and_clear_bit(offset, |
1945 | se->cur_valid_map_mir); | |
1946 | if (unlikely(exist != mir_exist)) { | |
1947 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
1948 | "when clearing bitmap, blk:%u, old bit:%d", | |
1949 | blkaddr, exist); | |
05796763 | 1950 | f2fs_bug_on(sbi, 1); |
13f00235 | 1951 | } |
dd5804b2 | 1952 | #endif |
13f00235 JK |
1953 | if (unlikely(!exist)) { |
1954 | f2fs_msg(sbi->sb, KERN_ERR, | |
1955 | "Bitmap was wrongly cleared, blk:%u", blkaddr); | |
1956 | f2fs_bug_on(sbi, 1); | |
1957 | se->valid_blocks++; | |
1958 | del = 0; | |
dd5804b2 | 1959 | } |
13f00235 | 1960 | |
c1286ff4 JK |
1961 | if (f2fs_discard_en(sbi) && |
1962 | f2fs_test_and_clear_bit(offset, se->discard_map)) | |
a66cdd98 | 1963 | sbi->discard_blks++; |
351df4b2 JK |
1964 | } |
1965 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
1966 | se->ckpt_valid_blocks += del; | |
1967 | ||
1968 | __mark_sit_entry_dirty(sbi, segno); | |
1969 | ||
1970 | /* update total number of valid blocks to be written in ckpt area */ | |
1971 | SIT_I(sbi)->written_valid_blocks += del; | |
1972 | ||
1973 | if (sbi->segs_per_sec > 1) | |
1974 | get_sec_entry(sbi, segno)->valid_blocks += del; | |
1975 | } | |
1976 | ||
351df4b2 JK |
1977 | void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) |
1978 | { | |
1979 | unsigned int segno = GET_SEGNO(sbi, addr); | |
1980 | struct sit_info *sit_i = SIT_I(sbi); | |
1981 | ||
9850cf4a | 1982 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
1983 | if (addr == NEW_ADDR) |
1984 | return; | |
1985 | ||
1986 | /* add it into sit main buffer */ | |
353c1624 | 1987 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
1988 | |
1989 | update_sit_entry(sbi, addr, -1); | |
1990 | ||
1991 | /* add it into dirty seglist */ | |
1992 | locate_dirty_segment(sbi, segno); | |
1993 | ||
353c1624 | 1994 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
1995 | } |
1996 | ||
6e2c64ad JK |
1997 | bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
1998 | { | |
1999 | struct sit_info *sit_i = SIT_I(sbi); | |
2000 | unsigned int segno, offset; | |
2001 | struct seg_entry *se; | |
2002 | bool is_cp = false; | |
2003 | ||
2004 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) | |
2005 | return true; | |
2006 | ||
353c1624 | 2007 | down_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2008 | |
2009 | segno = GET_SEGNO(sbi, blkaddr); | |
2010 | se = get_seg_entry(sbi, segno); | |
2011 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
2012 | ||
2013 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2014 | is_cp = true; | |
2015 | ||
353c1624 | 2016 | up_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2017 | |
2018 | return is_cp; | |
2019 | } | |
2020 | ||
0a8165d7 | 2021 | /* |
351df4b2 JK |
2022 | * This function should be resided under the curseg_mutex lock |
2023 | */ | |
2024 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 2025 | struct f2fs_summary *sum) |
351df4b2 JK |
2026 | { |
2027 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2028 | void *addr = curseg->sum_blk; | |
e79efe3b | 2029 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 2030 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
2031 | } |
2032 | ||
0a8165d7 | 2033 | /* |
351df4b2 JK |
2034 | * Calculate the number of current summary pages for writing |
2035 | */ | |
3fa06d7b | 2036 | int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 2037 | { |
351df4b2 | 2038 | int valid_sum_count = 0; |
9a47938b | 2039 | int i, sum_in_page; |
351df4b2 JK |
2040 | |
2041 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2042 | if (sbi->ckpt->alloc_type[i] == SSR) | |
2043 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
2044 | else { |
2045 | if (for_ra) | |
2046 | valid_sum_count += le16_to_cpu( | |
2047 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
2048 | else | |
2049 | valid_sum_count += curseg_blkoff(sbi, i); | |
2050 | } | |
351df4b2 JK |
2051 | } |
2052 | ||
c1286ff4 | 2053 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
2054 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
2055 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 2056 | return 1; |
9a47938b | 2057 | else if ((valid_sum_count - sum_in_page) <= |
c1286ff4 | 2058 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
2059 | return 2; |
2060 | return 3; | |
2061 | } | |
2062 | ||
0a8165d7 | 2063 | /* |
351df4b2 JK |
2064 | * Caller should put this summary page |
2065 | */ | |
2066 | struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) | |
2067 | { | |
2068 | return get_meta_page(sbi, GET_SUM_BLOCK(sbi, segno)); | |
2069 | } | |
2070 | ||
381722d2 | 2071 | void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr) |
351df4b2 JK |
2072 | { |
2073 | struct page *page = grab_meta_page(sbi, blk_addr); | |
381722d2 | 2074 | |
353c1624 | 2075 | memcpy(page_address(page), src, PAGE_SIZE); |
351df4b2 JK |
2076 | set_page_dirty(page); |
2077 | f2fs_put_page(page, 1); | |
2078 | } | |
2079 | ||
381722d2 CY |
2080 | static void write_sum_page(struct f2fs_sb_info *sbi, |
2081 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
2082 | { | |
2083 | update_meta_page(sbi, (void *)sum_blk, blk_addr); | |
2084 | } | |
2085 | ||
c1286ff4 JK |
2086 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
2087 | int type, block_t blk_addr) | |
2088 | { | |
2089 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2090 | struct page *page = grab_meta_page(sbi, blk_addr); | |
2091 | struct f2fs_summary_block *src = curseg->sum_blk; | |
2092 | struct f2fs_summary_block *dst; | |
2093 | ||
2094 | dst = (struct f2fs_summary_block *)page_address(page); | |
2095 | ||
2096 | mutex_lock(&curseg->curseg_mutex); | |
2097 | ||
2098 | down_read(&curseg->journal_rwsem); | |
2099 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
2100 | up_read(&curseg->journal_rwsem); | |
2101 | ||
2102 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
2103 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
2104 | ||
2105 | mutex_unlock(&curseg->curseg_mutex); | |
2106 | ||
2107 | set_page_dirty(page); | |
2108 | f2fs_put_page(page, 1); | |
2109 | } | |
2110 | ||
60374688 JK |
2111 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
2112 | { | |
2113 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
81fb5e87 | 2114 | unsigned int segno = curseg->segno + 1; |
60374688 JK |
2115 | struct free_segmap_info *free_i = FREE_I(sbi); |
2116 | ||
7cd8558b | 2117 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) |
81fb5e87 | 2118 | return !test_bit(segno, free_i->free_segmap); |
60374688 JK |
2119 | return 0; |
2120 | } | |
2121 | ||
0a8165d7 | 2122 | /* |
351df4b2 JK |
2123 | * Find a new segment from the free segments bitmap to right order |
2124 | * This function should be returned with success, otherwise BUG | |
2125 | */ | |
2126 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
2127 | unsigned int *newseg, bool new_sec, int dir) | |
2128 | { | |
2129 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 2130 | unsigned int segno, secno, zoneno; |
7cd8558b | 2131 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
13f00235 JK |
2132 | unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg); |
2133 | unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg); | |
351df4b2 JK |
2134 | unsigned int left_start = hint; |
2135 | bool init = true; | |
2136 | int go_left = 0; | |
2137 | int i; | |
2138 | ||
1a118ccf | 2139 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
2140 | |
2141 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
2142 | segno = find_next_zero_bit(free_i->free_segmap, | |
13f00235 JK |
2143 | GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1); |
2144 | if (segno < GET_SEG_FROM_SEC(sbi, hint + 1)) | |
351df4b2 JK |
2145 | goto got_it; |
2146 | } | |
2147 | find_other_zone: | |
7cd8558b JK |
2148 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
2149 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
2150 | if (dir == ALLOC_RIGHT) { |
2151 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2152 | MAIN_SECS(sbi), 0); |
2153 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2154 | } else { |
2155 | go_left = 1; | |
2156 | left_start = hint - 1; | |
2157 | } | |
2158 | } | |
2159 | if (go_left == 0) | |
2160 | goto skip_left; | |
2161 | ||
2162 | while (test_bit(left_start, free_i->free_secmap)) { | |
2163 | if (left_start > 0) { | |
2164 | left_start--; | |
2165 | continue; | |
2166 | } | |
2167 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2168 | MAIN_SECS(sbi), 0); |
2169 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2170 | break; |
2171 | } | |
2172 | secno = left_start; | |
2173 | skip_left: | |
13f00235 JK |
2174 | segno = GET_SEG_FROM_SEC(sbi, secno); |
2175 | zoneno = GET_ZONE_FROM_SEC(sbi, secno); | |
351df4b2 JK |
2176 | |
2177 | /* give up on finding another zone */ | |
2178 | if (!init) | |
2179 | goto got_it; | |
2180 | if (sbi->secs_per_zone == 1) | |
2181 | goto got_it; | |
2182 | if (zoneno == old_zoneno) | |
2183 | goto got_it; | |
2184 | if (dir == ALLOC_LEFT) { | |
2185 | if (!go_left && zoneno + 1 >= total_zones) | |
2186 | goto got_it; | |
2187 | if (go_left && zoneno == 0) | |
2188 | goto got_it; | |
2189 | } | |
2190 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2191 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
2192 | break; | |
2193 | ||
2194 | if (i < NR_CURSEG_TYPE) { | |
2195 | /* zone is in user, try another */ | |
2196 | if (go_left) | |
2197 | hint = zoneno * sbi->secs_per_zone - 1; | |
2198 | else if (zoneno + 1 >= total_zones) | |
2199 | hint = 0; | |
2200 | else | |
2201 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
2202 | init = false; | |
2203 | goto find_other_zone; | |
2204 | } | |
2205 | got_it: | |
2206 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 2207 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
2208 | __set_inuse(sbi, segno); |
2209 | *newseg = segno; | |
1a118ccf | 2210 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
2211 | } |
2212 | ||
2213 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
2214 | { | |
2215 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2216 | struct summary_footer *sum_footer; | |
2217 | ||
2218 | curseg->segno = curseg->next_segno; | |
13f00235 | 2219 | curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno); |
351df4b2 JK |
2220 | curseg->next_blkoff = 0; |
2221 | curseg->next_segno = NULL_SEGNO; | |
2222 | ||
2223 | sum_footer = &(curseg->sum_blk->footer); | |
2224 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
2225 | if (IS_DATASEG(type)) | |
2226 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
2227 | if (IS_NODESEG(type)) | |
2228 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
2229 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
2230 | } | |
2231 | ||
13f00235 JK |
2232 | static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type) |
2233 | { | |
2234 | /* if segs_per_sec is large than 1, we need to keep original policy. */ | |
2235 | if (sbi->segs_per_sec != 1) | |
2236 | return CURSEG_I(sbi, type)->segno; | |
2237 | ||
2238 | if (type == CURSEG_HOT_DATA || IS_NODESEG(type)) | |
2239 | return 0; | |
2240 | ||
2241 | if (SIT_I(sbi)->last_victim[ALLOC_NEXT]) | |
2242 | return SIT_I(sbi)->last_victim[ALLOC_NEXT]; | |
2243 | return CURSEG_I(sbi, type)->segno; | |
2244 | } | |
2245 | ||
0a8165d7 | 2246 | /* |
351df4b2 JK |
2247 | * Allocate a current working segment. |
2248 | * This function always allocates a free segment in LFS manner. | |
2249 | */ | |
2250 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
2251 | { | |
2252 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2253 | unsigned int segno = curseg->segno; | |
2254 | int dir = ALLOC_LEFT; | |
2255 | ||
2256 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 2257 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2258 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
2259 | dir = ALLOC_RIGHT; | |
2260 | ||
2261 | if (test_opt(sbi, NOHEAP)) | |
2262 | dir = ALLOC_RIGHT; | |
2263 | ||
13f00235 | 2264 | segno = __get_next_segno(sbi, type); |
351df4b2 JK |
2265 | get_new_segment(sbi, &segno, new_sec, dir); |
2266 | curseg->next_segno = segno; | |
2267 | reset_curseg(sbi, type, 1); | |
2268 | curseg->alloc_type = LFS; | |
2269 | } | |
2270 | ||
2271 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
2272 | struct curseg_info *seg, block_t start) | |
2273 | { | |
2274 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 2275 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 2276 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
2277 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
2278 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
2279 | int i, pos; | |
2280 | ||
2281 | for (i = 0; i < entries; i++) | |
2282 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
2283 | ||
2284 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
2285 | ||
2286 | seg->next_blkoff = pos; | |
351df4b2 JK |
2287 | } |
2288 | ||
0a8165d7 | 2289 | /* |
351df4b2 JK |
2290 | * If a segment is written by LFS manner, next block offset is just obtained |
2291 | * by increasing the current block offset. However, if a segment is written by | |
2292 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
2293 | */ | |
2294 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
2295 | struct curseg_info *seg) | |
2296 | { | |
2297 | if (seg->alloc_type == SSR) | |
2298 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
2299 | else | |
2300 | seg->next_blkoff++; | |
2301 | } | |
2302 | ||
0a8165d7 | 2303 | /* |
e1c42045 | 2304 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
2305 | * manner, so it should recover the existing segment information of valid blocks |
2306 | */ | |
13f00235 | 2307 | static void change_curseg(struct f2fs_sb_info *sbi, int type) |
351df4b2 JK |
2308 | { |
2309 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2310 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2311 | unsigned int new_segno = curseg->next_segno; | |
2312 | struct f2fs_summary_block *sum_node; | |
2313 | struct page *sum_page; | |
2314 | ||
2315 | write_sum_page(sbi, curseg->sum_blk, | |
2316 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
2317 | __set_test_and_inuse(sbi, new_segno); | |
2318 | ||
2319 | mutex_lock(&dirty_i->seglist_lock); | |
2320 | __remove_dirty_segment(sbi, new_segno, PRE); | |
2321 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
2322 | mutex_unlock(&dirty_i->seglist_lock); | |
2323 | ||
2324 | reset_curseg(sbi, type, 1); | |
2325 | curseg->alloc_type = SSR; | |
2326 | __next_free_blkoff(sbi, curseg, 0); | |
2327 | ||
13f00235 JK |
2328 | sum_page = get_sum_page(sbi, new_segno); |
2329 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); | |
2330 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
2331 | f2fs_put_page(sum_page, 1); | |
351df4b2 JK |
2332 | } |
2333 | ||
43727527 JK |
2334 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
2335 | { | |
2336 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2337 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
13f00235 JK |
2338 | unsigned segno = NULL_SEGNO; |
2339 | int i, cnt; | |
2340 | bool reversed = false; | |
2341 | ||
2342 | /* need_SSR() already forces to do this */ | |
2343 | if (v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) { | |
2344 | curseg->next_segno = segno; | |
2345 | return 1; | |
2346 | } | |
43727527 | 2347 | |
13f00235 JK |
2348 | /* For node segments, let's do SSR more intensively */ |
2349 | if (IS_NODESEG(type)) { | |
2350 | if (type >= CURSEG_WARM_NODE) { | |
2351 | reversed = true; | |
2352 | i = CURSEG_COLD_NODE; | |
2353 | } else { | |
2354 | i = CURSEG_HOT_NODE; | |
2355 | } | |
2356 | cnt = NR_CURSEG_NODE_TYPE; | |
2357 | } else { | |
2358 | if (type >= CURSEG_WARM_DATA) { | |
2359 | reversed = true; | |
2360 | i = CURSEG_COLD_DATA; | |
2361 | } else { | |
2362 | i = CURSEG_HOT_DATA; | |
2363 | } | |
2364 | cnt = NR_CURSEG_DATA_TYPE; | |
2365 | } | |
43727527 | 2366 | |
13f00235 JK |
2367 | for (; cnt-- > 0; reversed ? i-- : i++) { |
2368 | if (i == type) | |
2369 | continue; | |
2370 | if (v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) { | |
2371 | curseg->next_segno = segno; | |
43727527 | 2372 | return 1; |
13f00235 JK |
2373 | } |
2374 | } | |
43727527 JK |
2375 | return 0; |
2376 | } | |
2377 | ||
351df4b2 JK |
2378 | /* |
2379 | * flush out current segment and replace it with new segment | |
2380 | * This function should be returned with success, otherwise BUG | |
2381 | */ | |
2382 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
2383 | int type, bool force) | |
2384 | { | |
2385 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
351df4b2 | 2386 | |
7b405275 | 2387 | if (force) |
351df4b2 | 2388 | new_curseg(sbi, type, true); |
13f00235 JK |
2389 | else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) && |
2390 | type == CURSEG_WARM_NODE) | |
351df4b2 | 2391 | new_curseg(sbi, type, false); |
60374688 JK |
2392 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type)) |
2393 | new_curseg(sbi, type, false); | |
351df4b2 | 2394 | else if (need_SSR(sbi) && get_ssr_segment(sbi, type)) |
13f00235 | 2395 | change_curseg(sbi, type); |
351df4b2 JK |
2396 | else |
2397 | new_curseg(sbi, type, false); | |
dcdfff65 JK |
2398 | |
2399 | stat_inc_seg_type(sbi, curseg); | |
351df4b2 JK |
2400 | } |
2401 | ||
2402 | void allocate_new_segments(struct f2fs_sb_info *sbi) | |
2403 | { | |
00e5a211 JK |
2404 | struct curseg_info *curseg; |
2405 | unsigned int old_segno; | |
351df4b2 JK |
2406 | int i; |
2407 | ||
353c1624 JK |
2408 | down_write(&SIT_I(sbi)->sentry_lock); |
2409 | ||
00e5a211 JK |
2410 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
2411 | curseg = CURSEG_I(sbi, i); | |
2412 | old_segno = curseg->segno; | |
2413 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
2414 | locate_dirty_segment(sbi, old_segno); | |
2415 | } | |
353c1624 JK |
2416 | |
2417 | up_write(&SIT_I(sbi)->sentry_lock); | |
351df4b2 JK |
2418 | } |
2419 | ||
2420 | static const struct segment_allocation default_salloc_ops = { | |
2421 | .allocate_segment = allocate_segment_by_default, | |
2422 | }; | |
2423 | ||
556f5ba3 JK |
2424 | bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
2425 | { | |
2426 | __u64 trim_start = cpc->trim_start; | |
13f00235 | 2427 | bool has_candidate = false; |
556f5ba3 | 2428 | |
353c1624 | 2429 | down_write(&SIT_I(sbi)->sentry_lock); |
13f00235 JK |
2430 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) { |
2431 | if (add_discard_addrs(sbi, cpc, true)) { | |
2432 | has_candidate = true; | |
556f5ba3 | 2433 | break; |
13f00235 JK |
2434 | } |
2435 | } | |
353c1624 | 2436 | up_write(&SIT_I(sbi)->sentry_lock); |
556f5ba3 | 2437 | |
13f00235 JK |
2438 | cpc->trim_start = trim_start; |
2439 | return has_candidate; | |
556f5ba3 JK |
2440 | } |
2441 | ||
4b2fecc8 JK |
2442 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
2443 | { | |
f7ef9b83 JK |
2444 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
2445 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
353c1624 JK |
2446 | unsigned int start_segno, end_segno, cur_segno; |
2447 | block_t start_block, end_block; | |
4b2fecc8 | 2448 | struct cp_control cpc; |
353c1624 JK |
2449 | struct discard_policy dpolicy; |
2450 | unsigned long long trimmed = 0; | |
c1286ff4 | 2451 | int err = 0; |
4b2fecc8 | 2452 | |
836b5a63 | 2453 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
2454 | return -EINVAL; |
2455 | ||
7cd8558b | 2456 | if (end <= MAIN_BLKADDR(sbi)) |
4b2fecc8 JK |
2457 | goto out; |
2458 | ||
c1286ff4 JK |
2459 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
2460 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2461 | "Found FS corruption, run fsck to fix."); | |
2462 | goto out; | |
2463 | } | |
2464 | ||
4b2fecc8 | 2465 | /* start/end segment number in main_area */ |
7cd8558b JK |
2466 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
2467 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
2468 | GET_SEGNO(sbi, end); | |
353c1624 | 2469 | |
4b2fecc8 | 2470 | cpc.reason = CP_DISCARD; |
836b5a63 | 2471 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
4b2fecc8 JK |
2472 | |
2473 | /* do checkpoint to issue discard commands safely */ | |
353c1624 JK |
2474 | for (cur_segno = start_segno; cur_segno <= end_segno; |
2475 | cur_segno = cpc.trim_end + 1) { | |
2476 | cpc.trim_start = cur_segno; | |
a66cdd98 JK |
2477 | |
2478 | if (sbi->discard_blks == 0) | |
2479 | break; | |
2480 | else if (sbi->discard_blks < BATCHED_TRIM_BLOCKS(sbi)) | |
2481 | cpc.trim_end = end_segno; | |
2482 | else | |
2483 | cpc.trim_end = min_t(unsigned int, | |
353c1624 | 2484 | rounddown(cur_segno + |
bba681cb JK |
2485 | BATCHED_TRIM_SEGMENTS(sbi), |
2486 | sbi->segs_per_sec) - 1, end_segno); | |
2487 | ||
2488 | mutex_lock(&sbi->gc_mutex); | |
c1286ff4 | 2489 | err = write_checkpoint(sbi, &cpc); |
bba681cb | 2490 | mutex_unlock(&sbi->gc_mutex); |
c1286ff4 JK |
2491 | if (err) |
2492 | break; | |
2493 | ||
2494 | schedule(); | |
bba681cb | 2495 | } |
353c1624 JK |
2496 | |
2497 | start_block = START_BLOCK(sbi, start_segno); | |
2498 | end_block = START_BLOCK(sbi, min(cur_segno, end_segno) + 1); | |
2499 | ||
2500 | init_discard_policy(&dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen); | |
2501 | __issue_discard_cmd_range(sbi, &dpolicy, start_block, end_block); | |
2502 | trimmed = __wait_discard_cmd_range(sbi, &dpolicy, | |
2503 | start_block, end_block); | |
4b2fecc8 | 2504 | out: |
353c1624 | 2505 | range->len = F2FS_BLK_TO_BYTES(trimmed); |
c1286ff4 | 2506 | return err; |
4b2fecc8 JK |
2507 | } |
2508 | ||
351df4b2 JK |
2509 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
2510 | { | |
2511 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2512 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
2513 | return true; | |
2514 | return false; | |
2515 | } | |
2516 | ||
353c1624 JK |
2517 | #if 0 |
2518 | int rw_hint_to_seg_type(enum rw_hint hint) | |
2519 | { | |
2520 | switch (hint) { | |
2521 | case WRITE_LIFE_SHORT: | |
2522 | return CURSEG_HOT_DATA; | |
2523 | case WRITE_LIFE_EXTREME: | |
2524 | return CURSEG_COLD_DATA; | |
2525 | default: | |
2526 | return CURSEG_WARM_DATA; | |
2527 | } | |
2528 | } | |
2529 | #endif | |
2530 | ||
13f00235 | 2531 | static int __get_segment_type_2(struct f2fs_io_info *fio) |
351df4b2 | 2532 | { |
13f00235 | 2533 | if (fio->type == DATA) |
351df4b2 JK |
2534 | return CURSEG_HOT_DATA; |
2535 | else | |
2536 | return CURSEG_HOT_NODE; | |
2537 | } | |
2538 | ||
13f00235 | 2539 | static int __get_segment_type_4(struct f2fs_io_info *fio) |
351df4b2 | 2540 | { |
13f00235 JK |
2541 | if (fio->type == DATA) { |
2542 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 JK |
2543 | |
2544 | if (S_ISDIR(inode->i_mode)) | |
2545 | return CURSEG_HOT_DATA; | |
2546 | else | |
2547 | return CURSEG_COLD_DATA; | |
2548 | } else { | |
13f00235 | 2549 | if (IS_DNODE(fio->page) && is_cold_node(fio->page)) |
a344b9fd | 2550 | return CURSEG_WARM_NODE; |
351df4b2 JK |
2551 | else |
2552 | return CURSEG_COLD_NODE; | |
2553 | } | |
2554 | } | |
2555 | ||
13f00235 | 2556 | static int __get_segment_type_6(struct f2fs_io_info *fio) |
351df4b2 | 2557 | { |
13f00235 JK |
2558 | if (fio->type == DATA) { |
2559 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 | 2560 | |
13f00235 | 2561 | if (is_cold_data(fio->page) || file_is_cold(inode)) |
351df4b2 | 2562 | return CURSEG_COLD_DATA; |
13f00235 JK |
2563 | if (is_inode_flag_set(inode, FI_HOT_DATA)) |
2564 | return CURSEG_HOT_DATA; | |
353c1624 | 2565 | /* rw_hint_to_seg_type(inode->i_write_hint); */ |
13f00235 | 2566 | return CURSEG_WARM_DATA; |
351df4b2 | 2567 | } else { |
13f00235 JK |
2568 | if (IS_DNODE(fio->page)) |
2569 | return is_cold_node(fio->page) ? CURSEG_WARM_NODE : | |
351df4b2 | 2570 | CURSEG_HOT_NODE; |
13f00235 | 2571 | return CURSEG_COLD_NODE; |
351df4b2 JK |
2572 | } |
2573 | } | |
2574 | ||
13f00235 | 2575 | static int __get_segment_type(struct f2fs_io_info *fio) |
351df4b2 | 2576 | { |
13f00235 JK |
2577 | int type = 0; |
2578 | ||
2579 | switch (fio->sbi->active_logs) { | |
351df4b2 | 2580 | case 2: |
13f00235 JK |
2581 | type = __get_segment_type_2(fio); |
2582 | break; | |
351df4b2 | 2583 | case 4: |
13f00235 JK |
2584 | type = __get_segment_type_4(fio); |
2585 | break; | |
2586 | case 6: | |
2587 | type = __get_segment_type_6(fio); | |
2588 | break; | |
2589 | default: | |
2590 | f2fs_bug_on(fio->sbi, true); | |
351df4b2 | 2591 | } |
13f00235 JK |
2592 | |
2593 | if (IS_HOT(type)) | |
2594 | fio->temp = HOT; | |
2595 | else if (IS_WARM(type)) | |
2596 | fio->temp = WARM; | |
2597 | else | |
2598 | fio->temp = COLD; | |
2599 | return type; | |
351df4b2 JK |
2600 | } |
2601 | ||
bfad7c2d JK |
2602 | void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
2603 | block_t old_blkaddr, block_t *new_blkaddr, | |
13f00235 JK |
2604 | struct f2fs_summary *sum, int type, |
2605 | struct f2fs_io_info *fio, bool add_list) | |
351df4b2 JK |
2606 | { |
2607 | struct sit_info *sit_i = SIT_I(sbi); | |
00e5a211 | 2608 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
351df4b2 | 2609 | |
353c1624 JK |
2610 | down_read(&SM_I(sbi)->curseg_lock); |
2611 | ||
351df4b2 | 2612 | mutex_lock(&curseg->curseg_mutex); |
353c1624 | 2613 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2614 | |
2615 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 | 2616 | |
132263dd JK |
2617 | f2fs_wait_discard_bio(sbi, *new_blkaddr); |
2618 | ||
351df4b2 JK |
2619 | /* |
2620 | * __add_sum_entry should be resided under the curseg_mutex | |
2621 | * because, this function updates a summary entry in the | |
2622 | * current summary block. | |
2623 | */ | |
e79efe3b | 2624 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 2625 | |
351df4b2 | 2626 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
2627 | |
2628 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 2629 | |
353c1624 JK |
2630 | /* |
2631 | * SIT information should be updated before segment allocation, | |
2632 | * since SSR needs latest valid block information. | |
2633 | */ | |
2634 | update_sit_entry(sbi, *new_blkaddr, 1); | |
2635 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
2636 | update_sit_entry(sbi, old_blkaddr, -1); | |
2637 | ||
5e443818 JK |
2638 | if (!__has_curseg_space(sbi, type)) |
2639 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
353c1624 | 2640 | |
351df4b2 | 2641 | /* |
353c1624 JK |
2642 | * segment dirty status should be updated after segment allocation, |
2643 | * so we just need to update status only one time after previous | |
2644 | * segment being closed. | |
351df4b2 | 2645 | */ |
353c1624 JK |
2646 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); |
2647 | locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr)); | |
5e443818 | 2648 | |
353c1624 | 2649 | up_write(&sit_i->sentry_lock); |
351df4b2 | 2650 | |
13f00235 | 2651 | if (page && IS_NODESEG(type)) { |
351df4b2 JK |
2652 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
2653 | ||
13f00235 JK |
2654 | f2fs_inode_chksum_set(sbi, page); |
2655 | } | |
2656 | ||
2657 | if (add_list) { | |
2658 | struct f2fs_bio_info *io; | |
2659 | ||
2660 | INIT_LIST_HEAD(&fio->list); | |
2661 | fio->in_list = true; | |
2662 | io = sbi->write_io[fio->type] + fio->temp; | |
2663 | spin_lock(&io->io_lock); | |
2664 | list_add_tail(&fio->list, &io->io_list); | |
2665 | spin_unlock(&io->io_lock); | |
2666 | } | |
2667 | ||
bfad7c2d | 2668 | mutex_unlock(&curseg->curseg_mutex); |
353c1624 JK |
2669 | |
2670 | up_read(&SM_I(sbi)->curseg_lock); | |
2671 | } | |
2672 | ||
2673 | static void update_device_state(struct f2fs_io_info *fio) | |
2674 | { | |
2675 | struct f2fs_sb_info *sbi = fio->sbi; | |
2676 | unsigned int devidx; | |
2677 | ||
2678 | if (!sbi->s_ndevs) | |
2679 | return; | |
2680 | ||
2681 | devidx = f2fs_target_device_index(sbi, fio->new_blkaddr); | |
2682 | ||
2683 | /* update device state for fsync */ | |
2684 | set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO); | |
2685 | ||
2686 | /* update device state for checkpoint */ | |
2687 | if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) { | |
2688 | spin_lock(&sbi->dev_lock); | |
2689 | f2fs_set_bit(devidx, (char *)&sbi->dirty_device); | |
2690 | spin_unlock(&sbi->dev_lock); | |
2691 | } | |
bfad7c2d JK |
2692 | } |
2693 | ||
05ca3632 | 2694 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 2695 | { |
13f00235 | 2696 | int type = __get_segment_type(fio); |
b3fcb700 | 2697 | int err; |
bfad7c2d | 2698 | |
b3fcb700 | 2699 | reallocate: |
c1286ff4 | 2700 | allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
13f00235 | 2701 | &fio->new_blkaddr, sum, type, fio, true); |
bfad7c2d | 2702 | |
351df4b2 | 2703 | /* writeout dirty page into bdev */ |
13f00235 | 2704 | err = f2fs_submit_page_write(fio); |
b3fcb700 JK |
2705 | if (err == -EAGAIN) { |
2706 | fio->old_blkaddr = fio->new_blkaddr; | |
2707 | goto reallocate; | |
353c1624 JK |
2708 | } else if (!err) { |
2709 | update_device_state(fio); | |
b3fcb700 | 2710 | } |
351df4b2 JK |
2711 | } |
2712 | ||
13f00235 JK |
2713 | void write_meta_page(struct f2fs_sb_info *sbi, struct page *page, |
2714 | enum iostat_type io_type) | |
351df4b2 | 2715 | { |
458e6197 | 2716 | struct f2fs_io_info fio = { |
05ca3632 | 2717 | .sbi = sbi, |
458e6197 | 2718 | .type = META, |
dc45fd9e JK |
2719 | .op = REQ_OP_WRITE, |
2720 | .op_flags = REQ_SYNC | REQ_NOIDLE | REQ_META | REQ_PRIO, | |
c1286ff4 JK |
2721 | .old_blkaddr = page->index, |
2722 | .new_blkaddr = page->index, | |
05ca3632 | 2723 | .page = page, |
4375a336 | 2724 | .encrypted_page = NULL, |
13f00235 | 2725 | .in_list = false, |
458e6197 JK |
2726 | }; |
2727 | ||
2b947003 | 2728 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
dc45fd9e | 2729 | fio.op_flags &= ~REQ_META; |
2b947003 | 2730 | |
351df4b2 | 2731 | set_page_writeback(page); |
13f00235 JK |
2732 | f2fs_submit_page_write(&fio); |
2733 | ||
2734 | f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
2735 | } |
2736 | ||
05ca3632 | 2737 | void write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
2738 | { |
2739 | struct f2fs_summary sum; | |
05ca3632 | 2740 | |
351df4b2 | 2741 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 2742 | do_write_page(&sum, fio); |
13f00235 JK |
2743 | |
2744 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
2745 | } |
2746 | ||
05ca3632 | 2747 | void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio) |
351df4b2 | 2748 | { |
05ca3632 | 2749 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 JK |
2750 | struct f2fs_summary sum; |
2751 | struct node_info ni; | |
2752 | ||
9850cf4a | 2753 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
351df4b2 JK |
2754 | get_node_info(sbi, dn->nid, &ni); |
2755 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); | |
05ca3632 | 2756 | do_write_page(&sum, fio); |
c1286ff4 | 2757 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
13f00235 JK |
2758 | |
2759 | f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
2760 | } |
2761 | ||
13f00235 | 2762 | int rewrite_data_page(struct f2fs_io_info *fio) |
351df4b2 | 2763 | { |
13f00235 JK |
2764 | int err; |
2765 | ||
c1286ff4 | 2766 | fio->new_blkaddr = fio->old_blkaddr; |
05ca3632 | 2767 | stat_inc_inplace_blocks(fio->sbi); |
13f00235 JK |
2768 | |
2769 | err = f2fs_submit_page_bio(fio); | |
353c1624 JK |
2770 | if (!err) |
2771 | update_device_state(fio); | |
13f00235 JK |
2772 | |
2773 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
2774 | ||
2775 | return err; | |
351df4b2 JK |
2776 | } |
2777 | ||
353c1624 JK |
2778 | static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi, |
2779 | unsigned int segno) | |
2780 | { | |
2781 | int i; | |
2782 | ||
2783 | for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { | |
2784 | if (CURSEG_I(sbi, i)->segno == segno) | |
2785 | break; | |
2786 | } | |
2787 | return i; | |
2788 | } | |
2789 | ||
c1286ff4 | 2790 | void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 2791 | block_t old_blkaddr, block_t new_blkaddr, |
c1286ff4 | 2792 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
2793 | { |
2794 | struct sit_info *sit_i = SIT_I(sbi); | |
2795 | struct curseg_info *curseg; | |
2796 | unsigned int segno, old_cursegno; | |
2797 | struct seg_entry *se; | |
2798 | int type; | |
19f106bc | 2799 | unsigned short old_blkoff; |
351df4b2 JK |
2800 | |
2801 | segno = GET_SEGNO(sbi, new_blkaddr); | |
2802 | se = get_seg_entry(sbi, segno); | |
2803 | type = se->type; | |
2804 | ||
353c1624 JK |
2805 | down_write(&SM_I(sbi)->curseg_lock); |
2806 | ||
19f106bc CY |
2807 | if (!recover_curseg) { |
2808 | /* for recovery flow */ | |
2809 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
2810 | if (old_blkaddr == NULL_ADDR) | |
2811 | type = CURSEG_COLD_DATA; | |
2812 | else | |
2813 | type = CURSEG_WARM_DATA; | |
2814 | } | |
2815 | } else { | |
353c1624 JK |
2816 | if (IS_CURSEG(sbi, segno)) { |
2817 | /* se->type is volatile as SSR allocation */ | |
2818 | type = __f2fs_get_curseg(sbi, segno); | |
2819 | f2fs_bug_on(sbi, type == NO_CHECK_TYPE); | |
2820 | } else { | |
351df4b2 | 2821 | type = CURSEG_WARM_DATA; |
353c1624 | 2822 | } |
351df4b2 | 2823 | } |
19f106bc | 2824 | |
351df4b2 JK |
2825 | curseg = CURSEG_I(sbi, type); |
2826 | ||
2827 | mutex_lock(&curseg->curseg_mutex); | |
353c1624 | 2828 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2829 | |
2830 | old_cursegno = curseg->segno; | |
19f106bc | 2831 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
2832 | |
2833 | /* change the current segment */ | |
2834 | if (segno != curseg->segno) { | |
2835 | curseg->next_segno = segno; | |
13f00235 | 2836 | change_curseg(sbi, type); |
351df4b2 JK |
2837 | } |
2838 | ||
491c0854 | 2839 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 2840 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 2841 | |
c1286ff4 | 2842 | if (!recover_curseg || recover_newaddr) |
6e2c64ad JK |
2843 | update_sit_entry(sbi, new_blkaddr, 1); |
2844 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
2845 | update_sit_entry(sbi, old_blkaddr, -1); | |
2846 | ||
2847 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
2848 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
2849 | ||
351df4b2 | 2850 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 2851 | |
19f106bc CY |
2852 | if (recover_curseg) { |
2853 | if (old_cursegno != curseg->segno) { | |
2854 | curseg->next_segno = old_cursegno; | |
13f00235 | 2855 | change_curseg(sbi, type); |
19f106bc CY |
2856 | } |
2857 | curseg->next_blkoff = old_blkoff; | |
2858 | } | |
2859 | ||
353c1624 | 2860 | up_write(&sit_i->sentry_lock); |
351df4b2 | 2861 | mutex_unlock(&curseg->curseg_mutex); |
353c1624 | 2862 | up_write(&SM_I(sbi)->curseg_lock); |
351df4b2 JK |
2863 | } |
2864 | ||
528e3459 CY |
2865 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
2866 | block_t old_addr, block_t new_addr, | |
c1286ff4 JK |
2867 | unsigned char version, bool recover_curseg, |
2868 | bool recover_newaddr) | |
528e3459 CY |
2869 | { |
2870 | struct f2fs_summary sum; | |
2871 | ||
2872 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
2873 | ||
c1286ff4 JK |
2874 | __f2fs_replace_block(sbi, &sum, old_addr, new_addr, |
2875 | recover_curseg, recover_newaddr); | |
528e3459 | 2876 | |
c1286ff4 | 2877 | f2fs_update_data_blkaddr(dn, new_addr); |
df0f8dc0 CY |
2878 | } |
2879 | ||
93dfe2ac | 2880 | void f2fs_wait_on_page_writeback(struct page *page, |
c1286ff4 | 2881 | enum page_type type, bool ordered) |
93dfe2ac | 2882 | { |
93dfe2ac | 2883 | if (PageWriteback(page)) { |
4081363f JK |
2884 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
2885 | ||
13f00235 JK |
2886 | f2fs_submit_merged_write_cond(sbi, page->mapping->host, |
2887 | 0, page->index, type); | |
c1286ff4 JK |
2888 | if (ordered) |
2889 | wait_on_page_writeback(page); | |
2890 | else | |
2891 | wait_for_stable_page(page); | |
93dfe2ac JK |
2892 | } |
2893 | } | |
2894 | ||
13f00235 | 2895 | void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr) |
08b39fbd CY |
2896 | { |
2897 | struct page *cpage; | |
2898 | ||
c1286ff4 | 2899 | if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR) |
08b39fbd CY |
2900 | return; |
2901 | ||
08b39fbd CY |
2902 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
2903 | if (cpage) { | |
c1286ff4 | 2904 | f2fs_wait_on_page_writeback(cpage, DATA, true); |
08b39fbd CY |
2905 | f2fs_put_page(cpage, 1); |
2906 | } | |
2907 | } | |
2908 | ||
351df4b2 JK |
2909 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
2910 | { | |
2911 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2912 | struct curseg_info *seg_i; | |
2913 | unsigned char *kaddr; | |
2914 | struct page *page; | |
2915 | block_t start; | |
2916 | int i, j, offset; | |
2917 | ||
2918 | start = start_sum_block(sbi); | |
2919 | ||
2920 | page = get_meta_page(sbi, start++); | |
2921 | kaddr = (unsigned char *)page_address(page); | |
2922 | ||
2923 | /* Step 1: restore nat cache */ | |
2924 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
c1286ff4 | 2925 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2926 | |
2927 | /* Step 2: restore sit cache */ | |
2928 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
c1286ff4 | 2929 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
2930 | offset = 2 * SUM_JOURNAL_SIZE; |
2931 | ||
2932 | /* Step 3: restore summary entries */ | |
2933 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2934 | unsigned short blk_off; | |
2935 | unsigned int segno; | |
2936 | ||
2937 | seg_i = CURSEG_I(sbi, i); | |
2938 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
2939 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
2940 | seg_i->next_segno = segno; | |
2941 | reset_curseg(sbi, i, 0); | |
2942 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
2943 | seg_i->next_blkoff = blk_off; | |
2944 | ||
2945 | if (seg_i->alloc_type == SSR) | |
2946 | blk_off = sbi->blocks_per_seg; | |
2947 | ||
2948 | for (j = 0; j < blk_off; j++) { | |
2949 | struct f2fs_summary *s; | |
2950 | s = (struct f2fs_summary *)(kaddr + offset); | |
2951 | seg_i->sum_blk->entries[j] = *s; | |
2952 | offset += SUMMARY_SIZE; | |
c1286ff4 | 2953 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
2954 | SUM_FOOTER_SIZE) |
2955 | continue; | |
2956 | ||
2957 | f2fs_put_page(page, 1); | |
2958 | page = NULL; | |
2959 | ||
2960 | page = get_meta_page(sbi, start++); | |
2961 | kaddr = (unsigned char *)page_address(page); | |
2962 | offset = 0; | |
2963 | } | |
2964 | } | |
2965 | f2fs_put_page(page, 1); | |
2966 | return 0; | |
2967 | } | |
2968 | ||
2969 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
2970 | { | |
2971 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2972 | struct f2fs_summary_block *sum; | |
2973 | struct curseg_info *curseg; | |
2974 | struct page *new; | |
2975 | unsigned short blk_off; | |
2976 | unsigned int segno = 0; | |
2977 | block_t blk_addr = 0; | |
2978 | ||
2979 | /* get segment number and block addr */ | |
2980 | if (IS_DATASEG(type)) { | |
2981 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
2982 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
2983 | CURSEG_HOT_DATA]); | |
119ee914 | 2984 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
2985 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
2986 | else | |
2987 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
2988 | } else { | |
2989 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
2990 | CURSEG_HOT_NODE]); | |
2991 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
2992 | CURSEG_HOT_NODE]); | |
119ee914 | 2993 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
2994 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
2995 | type - CURSEG_HOT_NODE); | |
2996 | else | |
2997 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
2998 | } | |
2999 | ||
3000 | new = get_meta_page(sbi, blk_addr); | |
3001 | sum = (struct f2fs_summary_block *)page_address(new); | |
3002 | ||
3003 | if (IS_NODESEG(type)) { | |
119ee914 | 3004 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
3005 | struct f2fs_summary *ns = &sum->entries[0]; |
3006 | int i; | |
3007 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
3008 | ns->version = 0; | |
3009 | ns->ofs_in_node = 0; | |
3010 | } | |
3011 | } else { | |
d653788a GZ |
3012 | int err; |
3013 | ||
3014 | err = restore_node_summary(sbi, segno, sum); | |
3015 | if (err) { | |
351df4b2 | 3016 | f2fs_put_page(new, 1); |
d653788a | 3017 | return err; |
351df4b2 JK |
3018 | } |
3019 | } | |
3020 | } | |
3021 | ||
3022 | /* set uncompleted segment to curseg */ | |
3023 | curseg = CURSEG_I(sbi, type); | |
3024 | mutex_lock(&curseg->curseg_mutex); | |
c1286ff4 JK |
3025 | |
3026 | /* update journal info */ | |
3027 | down_write(&curseg->journal_rwsem); | |
3028 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
3029 | up_write(&curseg->journal_rwsem); | |
3030 | ||
3031 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
3032 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
3033 | curseg->next_segno = segno; |
3034 | reset_curseg(sbi, type, 0); | |
3035 | curseg->alloc_type = ckpt->alloc_type[type]; | |
3036 | curseg->next_blkoff = blk_off; | |
3037 | mutex_unlock(&curseg->curseg_mutex); | |
3038 | f2fs_put_page(new, 1); | |
3039 | return 0; | |
3040 | } | |
3041 | ||
3042 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
3043 | { | |
13f00235 JK |
3044 | struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal; |
3045 | struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal; | |
351df4b2 | 3046 | int type = CURSEG_HOT_DATA; |
e4fc5fbf | 3047 | int err; |
351df4b2 | 3048 | |
c1286ff4 | 3049 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
3fa06d7b CY |
3050 | int npages = npages_for_summary_flush(sbi, true); |
3051 | ||
3052 | if (npages >= 2) | |
3053 | ra_meta_pages(sbi, start_sum_block(sbi), npages, | |
26879fb1 | 3054 | META_CP, true); |
3fa06d7b | 3055 | |
351df4b2 JK |
3056 | /* restore for compacted data summary */ |
3057 | if (read_compacted_summaries(sbi)) | |
3058 | return -EINVAL; | |
3059 | type = CURSEG_HOT_NODE; | |
3060 | } | |
3061 | ||
119ee914 | 3062 | if (__exist_node_summaries(sbi)) |
3fa06d7b | 3063 | ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 3064 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 3065 | |
e4fc5fbf CY |
3066 | for (; type <= CURSEG_COLD_NODE; type++) { |
3067 | err = read_normal_summaries(sbi, type); | |
3068 | if (err) | |
3069 | return err; | |
3070 | } | |
3071 | ||
13f00235 JK |
3072 | /* sanity check for summary blocks */ |
3073 | if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES || | |
3074 | sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) | |
3075 | return -EINVAL; | |
3076 | ||
351df4b2 JK |
3077 | return 0; |
3078 | } | |
3079 | ||
3080 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
3081 | { | |
3082 | struct page *page; | |
3083 | unsigned char *kaddr; | |
3084 | struct f2fs_summary *summary; | |
3085 | struct curseg_info *seg_i; | |
3086 | int written_size = 0; | |
3087 | int i, j; | |
3088 | ||
3089 | page = grab_meta_page(sbi, blkaddr++); | |
3090 | kaddr = (unsigned char *)page_address(page); | |
3091 | ||
3092 | /* Step 1: write nat cache */ | |
3093 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
c1286ff4 | 3094 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3095 | written_size += SUM_JOURNAL_SIZE; |
3096 | ||
3097 | /* Step 2: write sit cache */ | |
3098 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
c1286ff4 | 3099 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3100 | written_size += SUM_JOURNAL_SIZE; |
3101 | ||
351df4b2 JK |
3102 | /* Step 3: write summary entries */ |
3103 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3104 | unsigned short blkoff; | |
3105 | seg_i = CURSEG_I(sbi, i); | |
3106 | if (sbi->ckpt->alloc_type[i] == SSR) | |
3107 | blkoff = sbi->blocks_per_seg; | |
3108 | else | |
3109 | blkoff = curseg_blkoff(sbi, i); | |
3110 | ||
3111 | for (j = 0; j < blkoff; j++) { | |
3112 | if (!page) { | |
3113 | page = grab_meta_page(sbi, blkaddr++); | |
3114 | kaddr = (unsigned char *)page_address(page); | |
3115 | written_size = 0; | |
3116 | } | |
3117 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
3118 | *summary = seg_i->sum_blk->entries[j]; | |
3119 | written_size += SUMMARY_SIZE; | |
351df4b2 | 3120 | |
c1286ff4 | 3121 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3122 | SUM_FOOTER_SIZE) |
3123 | continue; | |
3124 | ||
e8d61a74 | 3125 | set_page_dirty(page); |
351df4b2 JK |
3126 | f2fs_put_page(page, 1); |
3127 | page = NULL; | |
3128 | } | |
3129 | } | |
e8d61a74 CY |
3130 | if (page) { |
3131 | set_page_dirty(page); | |
351df4b2 | 3132 | f2fs_put_page(page, 1); |
e8d61a74 | 3133 | } |
351df4b2 JK |
3134 | } |
3135 | ||
3136 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
3137 | block_t blkaddr, int type) | |
3138 | { | |
3139 | int i, end; | |
3140 | if (IS_DATASEG(type)) | |
3141 | end = type + NR_CURSEG_DATA_TYPE; | |
3142 | else | |
3143 | end = type + NR_CURSEG_NODE_TYPE; | |
3144 | ||
c1286ff4 JK |
3145 | for (i = type; i < end; i++) |
3146 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
3147 | } |
3148 | ||
3149 | void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
3150 | { | |
c1286ff4 | 3151 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
3152 | write_compacted_summaries(sbi, start_blk); |
3153 | else | |
3154 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
3155 | } | |
3156 | ||
3157 | void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) | |
3158 | { | |
119ee914 | 3159 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
3160 | } |
3161 | ||
c1286ff4 | 3162 | int lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
3163 | unsigned int val, int alloc) |
3164 | { | |
3165 | int i; | |
3166 | ||
3167 | if (type == NAT_JOURNAL) { | |
c1286ff4 JK |
3168 | for (i = 0; i < nats_in_cursum(journal); i++) { |
3169 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
3170 | return i; |
3171 | } | |
c1286ff4 JK |
3172 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
3173 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 3174 | } else if (type == SIT_JOURNAL) { |
c1286ff4 JK |
3175 | for (i = 0; i < sits_in_cursum(journal); i++) |
3176 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 3177 | return i; |
c1286ff4 JK |
3178 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
3179 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
3180 | } |
3181 | return -1; | |
3182 | } | |
3183 | ||
3184 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
3185 | unsigned int segno) | |
3186 | { | |
2cc22186 | 3187 | return get_meta_page(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
3188 | } |
3189 | ||
3190 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
3191 | unsigned int start) | |
3192 | { | |
3193 | struct sit_info *sit_i = SIT_I(sbi); | |
3194 | struct page *src_page, *dst_page; | |
3195 | pgoff_t src_off, dst_off; | |
3196 | void *src_addr, *dst_addr; | |
3197 | ||
3198 | src_off = current_sit_addr(sbi, start); | |
3199 | dst_off = next_sit_addr(sbi, src_off); | |
3200 | ||
3201 | /* get current sit block page without lock */ | |
3202 | src_page = get_meta_page(sbi, src_off); | |
3203 | dst_page = grab_meta_page(sbi, dst_off); | |
9850cf4a | 3204 | f2fs_bug_on(sbi, PageDirty(src_page)); |
351df4b2 JK |
3205 | |
3206 | src_addr = page_address(src_page); | |
3207 | dst_addr = page_address(dst_page); | |
c1286ff4 | 3208 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
351df4b2 JK |
3209 | |
3210 | set_page_dirty(dst_page); | |
3211 | f2fs_put_page(src_page, 1); | |
3212 | ||
3213 | set_to_next_sit(sit_i, start); | |
3214 | ||
3215 | return dst_page; | |
3216 | } | |
3217 | ||
184a5cd2 CY |
3218 | static struct sit_entry_set *grab_sit_entry_set(void) |
3219 | { | |
3220 | struct sit_entry_set *ses = | |
80c54505 | 3221 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
3222 | |
3223 | ses->entry_cnt = 0; | |
3224 | INIT_LIST_HEAD(&ses->set_list); | |
3225 | return ses; | |
3226 | } | |
3227 | ||
3228 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
3229 | { | |
3230 | list_del(&ses->set_list); | |
3231 | kmem_cache_free(sit_entry_set_slab, ses); | |
3232 | } | |
3233 | ||
3234 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
3235 | struct list_head *head) | |
3236 | { | |
3237 | struct sit_entry_set *next = ses; | |
3238 | ||
3239 | if (list_is_last(&ses->set_list, head)) | |
3240 | return; | |
3241 | ||
3242 | list_for_each_entry_continue(next, head, set_list) | |
3243 | if (ses->entry_cnt <= next->entry_cnt) | |
3244 | break; | |
3245 | ||
3246 | list_move_tail(&ses->set_list, &next->set_list); | |
3247 | } | |
3248 | ||
3249 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
3250 | { | |
3251 | struct sit_entry_set *ses; | |
3252 | unsigned int start_segno = START_SEGNO(segno); | |
3253 | ||
3254 | list_for_each_entry(ses, head, set_list) { | |
3255 | if (ses->start_segno == start_segno) { | |
3256 | ses->entry_cnt++; | |
3257 | adjust_sit_entry_set(ses, head); | |
3258 | return; | |
3259 | } | |
3260 | } | |
3261 | ||
3262 | ses = grab_sit_entry_set(); | |
3263 | ||
3264 | ses->start_segno = start_segno; | |
3265 | ses->entry_cnt++; | |
3266 | list_add(&ses->set_list, head); | |
3267 | } | |
3268 | ||
3269 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
3270 | { | |
3271 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
3272 | struct list_head *set_list = &sm_info->sit_entry_set; | |
3273 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
3274 | unsigned int segno; |
3275 | ||
7cd8558b | 3276 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
3277 | add_sit_entry(segno, set_list); |
3278 | } | |
3279 | ||
3280 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
3281 | { |
3282 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
c1286ff4 | 3283 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
3284 | int i; |
3285 | ||
c1286ff4 JK |
3286 | down_write(&curseg->journal_rwsem); |
3287 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
184a5cd2 CY |
3288 | unsigned int segno; |
3289 | bool dirtied; | |
3290 | ||
c1286ff4 | 3291 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
3292 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
3293 | ||
3294 | if (!dirtied) | |
3295 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 3296 | } |
c1286ff4 JK |
3297 | update_sits_in_cursum(journal, -i); |
3298 | up_write(&curseg->journal_rwsem); | |
351df4b2 JK |
3299 | } |
3300 | ||
0a8165d7 | 3301 | /* |
351df4b2 JK |
3302 | * CP calls this function, which flushes SIT entries including sit_journal, |
3303 | * and moves prefree segs to free segs. | |
3304 | */ | |
4b2fecc8 | 3305 | void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
3306 | { |
3307 | struct sit_info *sit_i = SIT_I(sbi); | |
3308 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
3309 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
c1286ff4 | 3310 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
3311 | struct sit_entry_set *ses, *tmp; |
3312 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 3313 | bool to_journal = true; |
4b2fecc8 | 3314 | struct seg_entry *se; |
351df4b2 | 3315 | |
353c1624 | 3316 | down_write(&sit_i->sentry_lock); |
351df4b2 | 3317 | |
2b11a74b WL |
3318 | if (!sit_i->dirty_sentries) |
3319 | goto out; | |
3320 | ||
351df4b2 | 3321 | /* |
184a5cd2 CY |
3322 | * add and account sit entries of dirty bitmap in sit entry |
3323 | * set temporarily | |
351df4b2 | 3324 | */ |
184a5cd2 | 3325 | add_sits_in_set(sbi); |
351df4b2 | 3326 | |
184a5cd2 CY |
3327 | /* |
3328 | * if there are no enough space in journal to store dirty sit | |
3329 | * entries, remove all entries from journal and add and account | |
3330 | * them in sit entry set. | |
3331 | */ | |
c1286ff4 | 3332 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 3333 | remove_sits_in_journal(sbi); |
b2955550 | 3334 | |
184a5cd2 CY |
3335 | /* |
3336 | * there are two steps to flush sit entries: | |
3337 | * #1, flush sit entries to journal in current cold data summary block. | |
3338 | * #2, flush sit entries to sit page. | |
3339 | */ | |
3340 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 3341 | struct page *page = NULL; |
184a5cd2 CY |
3342 | struct f2fs_sit_block *raw_sit = NULL; |
3343 | unsigned int start_segno = ses->start_segno; | |
3344 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 3345 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
3346 | unsigned int segno = start_segno; |
3347 | ||
3348 | if (to_journal && | |
c1286ff4 | 3349 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
3350 | to_journal = false; |
3351 | ||
c1286ff4 JK |
3352 | if (to_journal) { |
3353 | down_write(&curseg->journal_rwsem); | |
3354 | } else { | |
184a5cd2 CY |
3355 | page = get_next_sit_page(sbi, start_segno); |
3356 | raw_sit = page_address(page); | |
351df4b2 | 3357 | } |
351df4b2 | 3358 | |
184a5cd2 CY |
3359 | /* flush dirty sit entries in region of current sit set */ |
3360 | for_each_set_bit_from(segno, bitmap, end) { | |
3361 | int offset, sit_offset; | |
4b2fecc8 JK |
3362 | |
3363 | se = get_seg_entry(sbi, segno); | |
184a5cd2 CY |
3364 | |
3365 | /* add discard candidates */ | |
13f00235 | 3366 | if (!(cpc->reason & CP_DISCARD)) { |
4b2fecc8 | 3367 | cpc->trim_start = segno; |
556f5ba3 | 3368 | add_discard_addrs(sbi, cpc, false); |
4b2fecc8 | 3369 | } |
184a5cd2 CY |
3370 | |
3371 | if (to_journal) { | |
c1286ff4 | 3372 | offset = lookup_journal_in_cursum(journal, |
184a5cd2 CY |
3373 | SIT_JOURNAL, segno, 1); |
3374 | f2fs_bug_on(sbi, offset < 0); | |
c1286ff4 | 3375 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
3376 | cpu_to_le32(segno); |
3377 | seg_info_to_raw_sit(se, | |
c1286ff4 | 3378 | &sit_in_journal(journal, offset)); |
184a5cd2 CY |
3379 | } else { |
3380 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
3381 | seg_info_to_raw_sit(se, | |
3382 | &raw_sit->entries[sit_offset]); | |
3383 | } | |
351df4b2 | 3384 | |
184a5cd2 CY |
3385 | __clear_bit(segno, bitmap); |
3386 | sit_i->dirty_sentries--; | |
3387 | ses->entry_cnt--; | |
351df4b2 JK |
3388 | } |
3389 | ||
c1286ff4 JK |
3390 | if (to_journal) |
3391 | up_write(&curseg->journal_rwsem); | |
3392 | else | |
184a5cd2 CY |
3393 | f2fs_put_page(page, 1); |
3394 | ||
3395 | f2fs_bug_on(sbi, ses->entry_cnt); | |
3396 | release_sit_entry_set(ses); | |
351df4b2 | 3397 | } |
184a5cd2 CY |
3398 | |
3399 | f2fs_bug_on(sbi, !list_empty(head)); | |
3400 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 3401 | out: |
13f00235 | 3402 | if (cpc->reason & CP_DISCARD) { |
c70e14cd YH |
3403 | __u64 trim_start = cpc->trim_start; |
3404 | ||
4b2fecc8 | 3405 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
556f5ba3 | 3406 | add_discard_addrs(sbi, cpc, false); |
c70e14cd YH |
3407 | |
3408 | cpc->trim_start = trim_start; | |
4b2fecc8 | 3409 | } |
353c1624 | 3410 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3411 | |
351df4b2 JK |
3412 | set_prefree_as_free_segments(sbi); |
3413 | } | |
3414 | ||
3415 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
3416 | { | |
3417 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
351df4b2 JK |
3418 | struct sit_info *sit_i; |
3419 | unsigned int sit_segs, start; | |
fb2e2f44 | 3420 | char *src_bitmap; |
351df4b2 JK |
3421 | unsigned int bitmap_size; |
3422 | ||
3423 | /* allocate memory for SIT information */ | |
3424 | sit_i = kzalloc(sizeof(struct sit_info), GFP_KERNEL); | |
3425 | if (!sit_i) | |
3426 | return -ENOMEM; | |
3427 | ||
3428 | SM_I(sbi)->sit_info = sit_i; | |
3429 | ||
13f00235 | 3430 | sit_i->sentries = kvzalloc(MAIN_SEGS(sbi) * |
39307a8e | 3431 | sizeof(struct seg_entry), GFP_KERNEL); |
351df4b2 JK |
3432 | if (!sit_i->sentries) |
3433 | return -ENOMEM; | |
3434 | ||
7cd8558b | 3435 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
13f00235 | 3436 | sit_i->dirty_sentries_bitmap = kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3437 | if (!sit_i->dirty_sentries_bitmap) |
3438 | return -ENOMEM; | |
3439 | ||
7cd8558b | 3440 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
3441 | sit_i->sentries[start].cur_valid_map |
3442 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
3443 | sit_i->sentries[start].ckpt_valid_map | |
3444 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
a66cdd98 | 3445 | if (!sit_i->sentries[start].cur_valid_map || |
c1286ff4 | 3446 | !sit_i->sentries[start].ckpt_valid_map) |
351df4b2 | 3447 | return -ENOMEM; |
c1286ff4 | 3448 | |
dd5804b2 CY |
3449 | #ifdef CONFIG_F2FS_CHECK_FS |
3450 | sit_i->sentries[start].cur_valid_map_mir | |
3451 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
3452 | if (!sit_i->sentries[start].cur_valid_map_mir) | |
3453 | return -ENOMEM; | |
3454 | #endif | |
3455 | ||
c1286ff4 JK |
3456 | if (f2fs_discard_en(sbi)) { |
3457 | sit_i->sentries[start].discard_map | |
3458 | = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); | |
3459 | if (!sit_i->sentries[start].discard_map) | |
3460 | return -ENOMEM; | |
3461 | } | |
351df4b2 JK |
3462 | } |
3463 | ||
60a3b782 JK |
3464 | sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
3465 | if (!sit_i->tmp_map) | |
3466 | return -ENOMEM; | |
3467 | ||
351df4b2 | 3468 | if (sbi->segs_per_sec > 1) { |
13f00235 | 3469 | sit_i->sec_entries = kvzalloc(MAIN_SECS(sbi) * |
39307a8e | 3470 | sizeof(struct sec_entry), GFP_KERNEL); |
351df4b2 JK |
3471 | if (!sit_i->sec_entries) |
3472 | return -ENOMEM; | |
3473 | } | |
3474 | ||
3475 | /* get information related with SIT */ | |
3476 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
3477 | ||
3478 | /* setup SIT bitmap from ckeckpoint pack */ | |
3479 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
3480 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
3481 | ||
fb2e2f44 CY |
3482 | sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
3483 | if (!sit_i->sit_bitmap) | |
351df4b2 | 3484 | return -ENOMEM; |
351df4b2 | 3485 | |
fb2e2f44 CY |
3486 | #ifdef CONFIG_F2FS_CHECK_FS |
3487 | sit_i->sit_bitmap_mir = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); | |
3488 | if (!sit_i->sit_bitmap_mir) | |
3489 | return -ENOMEM; | |
3490 | #endif | |
3491 | ||
351df4b2 JK |
3492 | /* init SIT information */ |
3493 | sit_i->s_ops = &default_salloc_ops; | |
3494 | ||
3495 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
3496 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
df3f20f1 | 3497 | sit_i->written_valid_blocks = 0; |
351df4b2 JK |
3498 | sit_i->bitmap_size = bitmap_size; |
3499 | sit_i->dirty_sentries = 0; | |
3500 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
3501 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
3502 | sit_i->mounted_time = CURRENT_TIME_SEC.tv_sec; | |
353c1624 | 3503 | init_rwsem(&sit_i->sentry_lock); |
351df4b2 JK |
3504 | return 0; |
3505 | } | |
3506 | ||
3507 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
3508 | { | |
351df4b2 JK |
3509 | struct free_segmap_info *free_i; |
3510 | unsigned int bitmap_size, sec_bitmap_size; | |
3511 | ||
3512 | /* allocate memory for free segmap information */ | |
3513 | free_i = kzalloc(sizeof(struct free_segmap_info), GFP_KERNEL); | |
3514 | if (!free_i) | |
3515 | return -ENOMEM; | |
3516 | ||
3517 | SM_I(sbi)->free_info = free_i; | |
3518 | ||
7cd8558b | 3519 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
13f00235 | 3520 | free_i->free_segmap = kvmalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3521 | if (!free_i->free_segmap) |
3522 | return -ENOMEM; | |
3523 | ||
7cd8558b | 3524 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
13f00235 | 3525 | free_i->free_secmap = kvmalloc(sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3526 | if (!free_i->free_secmap) |
3527 | return -ENOMEM; | |
3528 | ||
3529 | /* set all segments as dirty temporarily */ | |
3530 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
3531 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
3532 | ||
3533 | /* init free segmap information */ | |
7cd8558b | 3534 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
3535 | free_i->free_segments = 0; |
3536 | free_i->free_sections = 0; | |
1a118ccf | 3537 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
3538 | return 0; |
3539 | } | |
3540 | ||
3541 | static int build_curseg(struct f2fs_sb_info *sbi) | |
3542 | { | |
1042d60f | 3543 | struct curseg_info *array; |
351df4b2 JK |
3544 | int i; |
3545 | ||
b434babf | 3546 | array = kcalloc(NR_CURSEG_TYPE, sizeof(*array), GFP_KERNEL); |
351df4b2 JK |
3547 | if (!array) |
3548 | return -ENOMEM; | |
3549 | ||
3550 | SM_I(sbi)->curseg_array = array; | |
3551 | ||
3552 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
3553 | mutex_init(&array[i].curseg_mutex); | |
c1286ff4 | 3554 | array[i].sum_blk = kzalloc(PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
3555 | if (!array[i].sum_blk) |
3556 | return -ENOMEM; | |
c1286ff4 JK |
3557 | init_rwsem(&array[i].journal_rwsem); |
3558 | array[i].journal = kzalloc(sizeof(struct f2fs_journal), | |
3559 | GFP_KERNEL); | |
3560 | if (!array[i].journal) | |
3561 | return -ENOMEM; | |
351df4b2 JK |
3562 | array[i].segno = NULL_SEGNO; |
3563 | array[i].next_blkoff = 0; | |
3564 | } | |
3565 | return restore_curseg_summaries(sbi); | |
3566 | } | |
3567 | ||
3568 | static void build_sit_entries(struct f2fs_sb_info *sbi) | |
3569 | { | |
3570 | struct sit_info *sit_i = SIT_I(sbi); | |
3571 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
c1286ff4 JK |
3572 | struct f2fs_journal *journal = curseg->journal; |
3573 | struct seg_entry *se; | |
3574 | struct f2fs_sit_entry sit; | |
74de593a CY |
3575 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
3576 | unsigned int i, start, end; | |
3577 | unsigned int readed, start_blk = 0; | |
351df4b2 | 3578 | |
74de593a | 3579 | do { |
04030d21 JK |
3580 | readed = ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
3581 | META_SIT, true); | |
74de593a CY |
3582 | |
3583 | start = start_blk * sit_i->sents_per_block; | |
3584 | end = (start_blk + readed) * sit_i->sents_per_block; | |
3585 | ||
7cd8558b | 3586 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 3587 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
3588 | struct page *page; |
3589 | ||
c1286ff4 | 3590 | se = &sit_i->sentries[start]; |
74de593a CY |
3591 | page = get_current_sit_page(sbi, start); |
3592 | sit_blk = (struct f2fs_sit_block *)page_address(page); | |
3593 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
3594 | f2fs_put_page(page, 1); | |
c1286ff4 | 3595 | |
74de593a CY |
3596 | check_block_count(sbi, start, &sit); |
3597 | seg_info_from_raw_sit(se, &sit); | |
a66cdd98 JK |
3598 | |
3599 | /* build discard map only one time */ | |
c1286ff4 | 3600 | if (f2fs_discard_en(sbi)) { |
13f00235 JK |
3601 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
3602 | memset(se->discard_map, 0xff, | |
3603 | SIT_VBLOCK_MAP_SIZE); | |
3604 | } else { | |
3605 | memcpy(se->discard_map, | |
3606 | se->cur_valid_map, | |
3607 | SIT_VBLOCK_MAP_SIZE); | |
3608 | sbi->discard_blks += | |
3609 | sbi->blocks_per_seg - | |
3610 | se->valid_blocks; | |
3611 | } | |
74de593a | 3612 | } |
c1286ff4 JK |
3613 | |
3614 | if (sbi->segs_per_sec > 1) | |
3615 | get_sec_entry(sbi, start)->valid_blocks += | |
3616 | se->valid_blocks; | |
351df4b2 | 3617 | } |
74de593a CY |
3618 | start_blk += readed; |
3619 | } while (start_blk < sit_blk_cnt); | |
c1286ff4 JK |
3620 | |
3621 | down_read(&curseg->journal_rwsem); | |
3622 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
3623 | unsigned int old_valid_blocks; | |
3624 | ||
3625 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
3626 | se = &sit_i->sentries[start]; | |
3627 | sit = sit_in_journal(journal, i); | |
3628 | ||
3629 | old_valid_blocks = se->valid_blocks; | |
3630 | ||
3631 | check_block_count(sbi, start, &sit); | |
3632 | seg_info_from_raw_sit(se, &sit); | |
3633 | ||
3634 | if (f2fs_discard_en(sbi)) { | |
13f00235 JK |
3635 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
3636 | memset(se->discard_map, 0xff, | |
3637 | SIT_VBLOCK_MAP_SIZE); | |
3638 | } else { | |
3639 | memcpy(se->discard_map, se->cur_valid_map, | |
3640 | SIT_VBLOCK_MAP_SIZE); | |
3641 | sbi->discard_blks += old_valid_blocks - | |
3642 | se->valid_blocks; | |
3643 | } | |
c1286ff4 JK |
3644 | } |
3645 | ||
3646 | if (sbi->segs_per_sec > 1) | |
3647 | get_sec_entry(sbi, start)->valid_blocks += | |
3648 | se->valid_blocks - old_valid_blocks; | |
3649 | } | |
3650 | up_read(&curseg->journal_rwsem); | |
351df4b2 JK |
3651 | } |
3652 | ||
3653 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
3654 | { | |
3655 | unsigned int start; | |
3656 | int type; | |
3657 | ||
7cd8558b | 3658 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
3659 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
3660 | if (!sentry->valid_blocks) | |
3661 | __set_free(sbi, start); | |
df3f20f1 JK |
3662 | else |
3663 | SIT_I(sbi)->written_valid_blocks += | |
3664 | sentry->valid_blocks; | |
351df4b2 JK |
3665 | } |
3666 | ||
3667 | /* set use the current segments */ | |
3668 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
3669 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
3670 | __set_test_and_inuse(sbi, curseg_t->segno); | |
3671 | } | |
3672 | } | |
3673 | ||
3674 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
3675 | { | |
3676 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
3677 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 3678 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
3679 | unsigned short valid_blocks; |
3680 | ||
8736fbf0 | 3681 | while (1) { |
351df4b2 | 3682 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
3683 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
3684 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
3685 | break; |
3686 | offset = segno + 1; | |
13f00235 | 3687 | valid_blocks = get_valid_blocks(sbi, segno, false); |
ec325b52 | 3688 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 3689 | continue; |
ec325b52 JK |
3690 | if (valid_blocks > sbi->blocks_per_seg) { |
3691 | f2fs_bug_on(sbi, 1); | |
3692 | continue; | |
3693 | } | |
351df4b2 JK |
3694 | mutex_lock(&dirty_i->seglist_lock); |
3695 | __locate_dirty_segment(sbi, segno, DIRTY); | |
3696 | mutex_unlock(&dirty_i->seglist_lock); | |
3697 | } | |
3698 | } | |
3699 | ||
5ec4e49f | 3700 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3701 | { |
3702 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 3703 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 3704 | |
13f00235 | 3705 | dirty_i->victim_secmap = kvzalloc(bitmap_size, GFP_KERNEL); |
5ec4e49f | 3706 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
3707 | return -ENOMEM; |
3708 | return 0; | |
3709 | } | |
3710 | ||
3711 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
3712 | { | |
3713 | struct dirty_seglist_info *dirty_i; | |
3714 | unsigned int bitmap_size, i; | |
3715 | ||
3716 | /* allocate memory for dirty segments list information */ | |
3717 | dirty_i = kzalloc(sizeof(struct dirty_seglist_info), GFP_KERNEL); | |
3718 | if (!dirty_i) | |
3719 | return -ENOMEM; | |
3720 | ||
3721 | SM_I(sbi)->dirty_info = dirty_i; | |
3722 | mutex_init(&dirty_i->seglist_lock); | |
3723 | ||
7cd8558b | 3724 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
3725 | |
3726 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
13f00235 | 3727 | dirty_i->dirty_segmap[i] = kvzalloc(bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3728 | if (!dirty_i->dirty_segmap[i]) |
3729 | return -ENOMEM; | |
3730 | } | |
3731 | ||
3732 | init_dirty_segmap(sbi); | |
5ec4e49f | 3733 | return init_victim_secmap(sbi); |
351df4b2 JK |
3734 | } |
3735 | ||
0a8165d7 | 3736 | /* |
351df4b2 JK |
3737 | * Update min, max modified time for cost-benefit GC algorithm |
3738 | */ | |
3739 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
3740 | { | |
3741 | struct sit_info *sit_i = SIT_I(sbi); | |
3742 | unsigned int segno; | |
3743 | ||
353c1624 | 3744 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3745 | |
3746 | sit_i->min_mtime = LLONG_MAX; | |
3747 | ||
7cd8558b | 3748 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
3749 | unsigned int i; |
3750 | unsigned long long mtime = 0; | |
3751 | ||
3752 | for (i = 0; i < sbi->segs_per_sec; i++) | |
3753 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
3754 | ||
3755 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
3756 | ||
3757 | if (sit_i->min_mtime > mtime) | |
3758 | sit_i->min_mtime = mtime; | |
3759 | } | |
3760 | sit_i->max_mtime = get_mtime(sbi); | |
353c1624 | 3761 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
3762 | } |
3763 | ||
3764 | int build_segment_manager(struct f2fs_sb_info *sbi) | |
3765 | { | |
3766 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
3767 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 3768 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
3769 | int err; |
3770 | ||
3771 | sm_info = kzalloc(sizeof(struct f2fs_sm_info), GFP_KERNEL); | |
3772 | if (!sm_info) | |
3773 | return -ENOMEM; | |
3774 | ||
3775 | /* init sm info */ | |
3776 | sbi->sm_info = sm_info; | |
351df4b2 JK |
3777 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
3778 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
3779 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
3780 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
3781 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
3782 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
3783 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
3784 | sm_info->rec_prefree_segments = sm_info->main_segments * |
3785 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
c1286ff4 JK |
3786 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
3787 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
3788 | ||
3789 | if (!test_opt(sbi, LFS)) | |
3790 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; | |
216fbd64 | 3791 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 3792 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
13f00235 | 3793 | sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS; |
353c1624 | 3794 | sm_info->min_ssr_sections = reserved_sections(sbi); |
7fd9e544 | 3795 | |
bba681cb JK |
3796 | sm_info->trim_sections = DEF_BATCHED_TRIM_SECTIONS; |
3797 | ||
184a5cd2 CY |
3798 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
3799 | ||
353c1624 JK |
3800 | init_rwsem(&sm_info->curseg_lock); |
3801 | ||
13f00235 | 3802 | if (!f2fs_readonly(sbi->sb)) { |
2163d198 GZ |
3803 | err = create_flush_cmd_control(sbi); |
3804 | if (err) | |
a688b9d9 | 3805 | return err; |
6b4afdd7 JK |
3806 | } |
3807 | ||
13f00235 JK |
3808 | err = create_discard_cmd_control(sbi); |
3809 | if (err) | |
3810 | return err; | |
3811 | ||
351df4b2 JK |
3812 | err = build_sit_info(sbi); |
3813 | if (err) | |
3814 | return err; | |
3815 | err = build_free_segmap(sbi); | |
3816 | if (err) | |
3817 | return err; | |
3818 | err = build_curseg(sbi); | |
3819 | if (err) | |
3820 | return err; | |
3821 | ||
3822 | /* reinit free segmap based on SIT */ | |
3823 | build_sit_entries(sbi); | |
3824 | ||
3825 | init_free_segmap(sbi); | |
3826 | err = build_dirty_segmap(sbi); | |
3827 | if (err) | |
3828 | return err; | |
3829 | ||
3830 | init_min_max_mtime(sbi); | |
3831 | return 0; | |
3832 | } | |
3833 | ||
3834 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
3835 | enum dirty_type dirty_type) | |
3836 | { | |
3837 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
3838 | ||
3839 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 3840 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
3841 | dirty_i->nr_dirty[dirty_type] = 0; |
3842 | mutex_unlock(&dirty_i->seglist_lock); | |
3843 | } | |
3844 | ||
5ec4e49f | 3845 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3846 | { |
3847 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 3848 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
3849 | } |
3850 | ||
3851 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
3852 | { | |
3853 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
3854 | int i; | |
3855 | ||
3856 | if (!dirty_i) | |
3857 | return; | |
3858 | ||
3859 | /* discard pre-free/dirty segments list */ | |
3860 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
3861 | discard_dirty_segmap(sbi, i); | |
3862 | ||
5ec4e49f | 3863 | destroy_victim_secmap(sbi); |
351df4b2 JK |
3864 | SM_I(sbi)->dirty_info = NULL; |
3865 | kfree(dirty_i); | |
3866 | } | |
3867 | ||
3868 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
3869 | { | |
3870 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
3871 | int i; | |
3872 | ||
3873 | if (!array) | |
3874 | return; | |
3875 | SM_I(sbi)->curseg_array = NULL; | |
c1286ff4 | 3876 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
351df4b2 | 3877 | kfree(array[i].sum_blk); |
c1286ff4 JK |
3878 | kfree(array[i].journal); |
3879 | } | |
351df4b2 JK |
3880 | kfree(array); |
3881 | } | |
3882 | ||
3883 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
3884 | { | |
3885 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
3886 | if (!free_i) | |
3887 | return; | |
3888 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
3889 | kvfree(free_i->free_segmap); |
3890 | kvfree(free_i->free_secmap); | |
351df4b2 JK |
3891 | kfree(free_i); |
3892 | } | |
3893 | ||
3894 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
3895 | { | |
3896 | struct sit_info *sit_i = SIT_I(sbi); | |
3897 | unsigned int start; | |
3898 | ||
3899 | if (!sit_i) | |
3900 | return; | |
3901 | ||
3902 | if (sit_i->sentries) { | |
7cd8558b | 3903 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 | 3904 | kfree(sit_i->sentries[start].cur_valid_map); |
dd5804b2 CY |
3905 | #ifdef CONFIG_F2FS_CHECK_FS |
3906 | kfree(sit_i->sentries[start].cur_valid_map_mir); | |
3907 | #endif | |
351df4b2 | 3908 | kfree(sit_i->sentries[start].ckpt_valid_map); |
a66cdd98 | 3909 | kfree(sit_i->sentries[start].discard_map); |
351df4b2 JK |
3910 | } |
3911 | } | |
60a3b782 JK |
3912 | kfree(sit_i->tmp_map); |
3913 | ||
39307a8e JK |
3914 | kvfree(sit_i->sentries); |
3915 | kvfree(sit_i->sec_entries); | |
3916 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
3917 | |
3918 | SM_I(sbi)->sit_info = NULL; | |
3919 | kfree(sit_i->sit_bitmap); | |
fb2e2f44 CY |
3920 | #ifdef CONFIG_F2FS_CHECK_FS |
3921 | kfree(sit_i->sit_bitmap_mir); | |
3922 | #endif | |
351df4b2 JK |
3923 | kfree(sit_i); |
3924 | } | |
3925 | ||
3926 | void destroy_segment_manager(struct f2fs_sb_info *sbi) | |
3927 | { | |
3928 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 3929 | |
3b03f724 CY |
3930 | if (!sm_info) |
3931 | return; | |
be4b8492 | 3932 | destroy_flush_cmd_control(sbi, true); |
13f00235 | 3933 | destroy_discard_cmd_control(sbi); |
351df4b2 JK |
3934 | destroy_dirty_segmap(sbi); |
3935 | destroy_curseg(sbi); | |
3936 | destroy_free_segmap(sbi); | |
3937 | destroy_sit_info(sbi); | |
3938 | sbi->sm_info = NULL; | |
3939 | kfree(sm_info); | |
3940 | } | |
7fd9e544 JK |
3941 | |
3942 | int __init create_segment_manager_caches(void) | |
3943 | { | |
3944 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 3945 | sizeof(struct discard_entry)); |
7fd9e544 | 3946 | if (!discard_entry_slab) |
184a5cd2 CY |
3947 | goto fail; |
3948 | ||
eee3f1f5 JK |
3949 | discard_cmd_slab = f2fs_kmem_cache_create("discard_cmd", |
3950 | sizeof(struct discard_cmd)); | |
3951 | if (!discard_cmd_slab) | |
401c465b JK |
3952 | goto destroy_discard_entry; |
3953 | ||
184a5cd2 | 3954 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
c9ee0085 | 3955 | sizeof(struct sit_entry_set)); |
184a5cd2 | 3956 | if (!sit_entry_set_slab) |
eee3f1f5 | 3957 | goto destroy_discard_cmd; |
88b88a66 JK |
3958 | |
3959 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
3960 | sizeof(struct inmem_pages)); | |
3961 | if (!inmem_entry_slab) | |
3962 | goto destroy_sit_entry_set; | |
7fd9e544 | 3963 | return 0; |
184a5cd2 | 3964 | |
88b88a66 JK |
3965 | destroy_sit_entry_set: |
3966 | kmem_cache_destroy(sit_entry_set_slab); | |
eee3f1f5 JK |
3967 | destroy_discard_cmd: |
3968 | kmem_cache_destroy(discard_cmd_slab); | |
c1286ff4 | 3969 | destroy_discard_entry: |
184a5cd2 CY |
3970 | kmem_cache_destroy(discard_entry_slab); |
3971 | fail: | |
3972 | return -ENOMEM; | |
7fd9e544 JK |
3973 | } |
3974 | ||
3975 | void destroy_segment_manager_caches(void) | |
3976 | { | |
184a5cd2 | 3977 | kmem_cache_destroy(sit_entry_set_slab); |
eee3f1f5 | 3978 | kmem_cache_destroy(discard_cmd_slab); |
7fd9e544 | 3979 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 3980 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 3981 | } |