Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
351df4b2 JK |
3 | * fs/f2fs/segment.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
351df4b2 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/bio.h> | |
11 | #include <linux/blkdev.h> | |
690e4a3e | 12 | #include <linux/prefetch.h> |
6b4afdd7 | 13 | #include <linux/kthread.h> |
74de593a | 14 | #include <linux/swap.h> |
60b99b48 | 15 | #include <linux/timer.h> |
1d7be270 | 16 | #include <linux/freezer.h> |
1eb1ef4a | 17 | #include <linux/sched/signal.h> |
351df4b2 JK |
18 | |
19 | #include "f2fs.h" | |
20 | #include "segment.h" | |
21 | #include "node.h" | |
5f656541 | 22 | #include "gc.h" |
9e4ded3f | 23 | #include "trace.h" |
6ec178da | 24 | #include <trace/events/f2fs.h> |
351df4b2 | 25 | |
9a7f143a CL |
26 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
27 | ||
7fd9e544 | 28 | static struct kmem_cache *discard_entry_slab; |
b01a9201 | 29 | static struct kmem_cache *discard_cmd_slab; |
184a5cd2 | 30 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 31 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 32 | |
f96999c3 JK |
33 | static unsigned long __reverse_ulong(unsigned char *str) |
34 | { | |
35 | unsigned long tmp = 0; | |
36 | int shift = 24, idx = 0; | |
37 | ||
38 | #if BITS_PER_LONG == 64 | |
39 | shift = 56; | |
40 | #endif | |
41 | while (shift >= 0) { | |
42 | tmp |= (unsigned long)str[idx++] << shift; | |
43 | shift -= BITS_PER_BYTE; | |
44 | } | |
45 | return tmp; | |
46 | } | |
47 | ||
9a7f143a CL |
48 | /* |
49 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
50 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
51 | */ | |
52 | static inline unsigned long __reverse_ffs(unsigned long word) | |
53 | { | |
54 | int num = 0; | |
55 | ||
56 | #if BITS_PER_LONG == 64 | |
f96999c3 | 57 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 58 | num += 32; |
f96999c3 | 59 | else |
9a7f143a | 60 | word >>= 32; |
9a7f143a | 61 | #endif |
f96999c3 | 62 | if ((word & 0xffff0000) == 0) |
9a7f143a | 63 | num += 16; |
f96999c3 | 64 | else |
9a7f143a | 65 | word >>= 16; |
f96999c3 JK |
66 | |
67 | if ((word & 0xff00) == 0) | |
9a7f143a | 68 | num += 8; |
f96999c3 | 69 | else |
9a7f143a | 70 | word >>= 8; |
f96999c3 | 71 | |
9a7f143a CL |
72 | if ((word & 0xf0) == 0) |
73 | num += 4; | |
74 | else | |
75 | word >>= 4; | |
f96999c3 | 76 | |
9a7f143a CL |
77 | if ((word & 0xc) == 0) |
78 | num += 2; | |
79 | else | |
80 | word >>= 2; | |
f96999c3 | 81 | |
9a7f143a CL |
82 | if ((word & 0x2) == 0) |
83 | num += 1; | |
84 | return num; | |
85 | } | |
86 | ||
87 | /* | |
e1c42045 | 88 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 89 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 90 | * @size must be integral times of unsigned long. |
9a7f143a | 91 | * Example: |
f96999c3 JK |
92 | * MSB <--> LSB |
93 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
94 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
95 | */ |
96 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
97 | unsigned long size, unsigned long offset) | |
98 | { | |
99 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 100 | unsigned long result = size; |
9a7f143a | 101 | unsigned long tmp; |
9a7f143a CL |
102 | |
103 | if (offset >= size) | |
104 | return size; | |
105 | ||
692223d1 | 106 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 107 | offset %= BITS_PER_LONG; |
f96999c3 | 108 | |
692223d1 FL |
109 | while (1) { |
110 | if (*p == 0) | |
111 | goto pass; | |
9a7f143a | 112 | |
f96999c3 | 113 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
114 | |
115 | tmp &= ~0UL >> offset; | |
116 | if (size < BITS_PER_LONG) | |
117 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 118 | if (tmp) |
692223d1 FL |
119 | goto found; |
120 | pass: | |
121 | if (size <= BITS_PER_LONG) | |
122 | break; | |
9a7f143a | 123 | size -= BITS_PER_LONG; |
692223d1 | 124 | offset = 0; |
f96999c3 | 125 | p++; |
9a7f143a | 126 | } |
692223d1 FL |
127 | return result; |
128 | found: | |
129 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
130 | } |
131 | ||
132 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
133 | unsigned long size, unsigned long offset) | |
134 | { | |
135 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 136 | unsigned long result = size; |
9a7f143a | 137 | unsigned long tmp; |
9a7f143a CL |
138 | |
139 | if (offset >= size) | |
140 | return size; | |
141 | ||
80609448 | 142 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 143 | offset %= BITS_PER_LONG; |
80609448 JK |
144 | |
145 | while (1) { | |
146 | if (*p == ~0UL) | |
147 | goto pass; | |
148 | ||
f96999c3 | 149 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
150 | |
151 | if (offset) | |
152 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
153 | if (size < BITS_PER_LONG) | |
154 | tmp |= ~0UL >> size; | |
f96999c3 | 155 | if (tmp != ~0UL) |
80609448 JK |
156 | goto found; |
157 | pass: | |
158 | if (size <= BITS_PER_LONG) | |
159 | break; | |
9a7f143a | 160 | size -= BITS_PER_LONG; |
80609448 | 161 | offset = 0; |
f96999c3 | 162 | p++; |
9a7f143a | 163 | } |
80609448 JK |
164 | return result; |
165 | found: | |
166 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
167 | } |
168 | ||
4d57b86d | 169 | bool f2fs_need_SSR(struct f2fs_sb_info *sbi) |
b3a97a2a JK |
170 | { |
171 | int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); | |
172 | int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); | |
173 | int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); | |
174 | ||
175 | if (test_opt(sbi, LFS)) | |
176 | return false; | |
5b0e9539 | 177 | if (sbi->gc_mode == GC_URGENT) |
b3a97a2a | 178 | return true; |
4354994f DR |
179 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
180 | return true; | |
b3a97a2a JK |
181 | |
182 | return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + | |
a2a12b67 | 183 | SM_I(sbi)->min_ssr_sections + reserved_sections(sbi)); |
b3a97a2a JK |
184 | } |
185 | ||
4d57b86d | 186 | void f2fs_register_inmem_page(struct inode *inode, struct page *page) |
88b88a66 | 187 | { |
57864ae5 | 188 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
88b88a66 JK |
189 | struct f2fs_inode_info *fi = F2FS_I(inode); |
190 | struct inmem_pages *new; | |
9be32d72 | 191 | |
9e4ded3f | 192 | f2fs_trace_pid(page); |
0722b101 | 193 | |
decd36b6 CY |
194 | set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
195 | SetPagePrivate(page); | |
196 | ||
88b88a66 JK |
197 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
198 | ||
199 | /* add atomic page indices to the list */ | |
200 | new->page = page; | |
201 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 202 | |
88b88a66 JK |
203 | /* increase reference count with clean state */ |
204 | mutex_lock(&fi->inmem_lock); | |
205 | get_page(page); | |
206 | list_add_tail(&new->list, &fi->inmem_pages); | |
57864ae5 JK |
207 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
208 | if (list_empty(&fi->inmem_ilist)) | |
209 | list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]); | |
210 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
8dcf2ff7 | 211 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
88b88a66 | 212 | mutex_unlock(&fi->inmem_lock); |
8ce67cb0 JK |
213 | |
214 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
215 | } |
216 | ||
28bc106b CY |
217 | static int __revoke_inmem_pages(struct inode *inode, |
218 | struct list_head *head, bool drop, bool recover) | |
29b96b54 | 219 | { |
28bc106b | 220 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 221 | struct inmem_pages *cur, *tmp; |
28bc106b | 222 | int err = 0; |
29b96b54 CY |
223 | |
224 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
225 | struct page *page = cur->page; |
226 | ||
227 | if (drop) | |
228 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
229 | ||
230 | lock_page(page); | |
29b96b54 | 231 | |
bae0ee7a | 232 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
e5e5732d | 233 | |
28bc106b CY |
234 | if (recover) { |
235 | struct dnode_of_data dn; | |
236 | struct node_info ni; | |
237 | ||
238 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
7f2b4e8e | 239 | retry: |
28bc106b | 240 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d CY |
241 | err = f2fs_get_dnode_of_data(&dn, page->index, |
242 | LOOKUP_NODE); | |
7f2b4e8e CY |
243 | if (err) { |
244 | if (err == -ENOMEM) { | |
245 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
246 | cond_resched(); | |
247 | goto retry; | |
248 | } | |
28bc106b CY |
249 | err = -EAGAIN; |
250 | goto next; | |
251 | } | |
7735730d CY |
252 | |
253 | err = f2fs_get_node_info(sbi, dn.nid, &ni); | |
254 | if (err) { | |
255 | f2fs_put_dnode(&dn); | |
256 | return err; | |
257 | } | |
258 | ||
f1d2564a | 259 | if (cur->old_addr == NEW_ADDR) { |
4d57b86d | 260 | f2fs_invalidate_blocks(sbi, dn.data_blkaddr); |
f1d2564a DJ |
261 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
262 | } else | |
263 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
28bc106b CY |
264 | cur->old_addr, ni.version, true, true); |
265 | f2fs_put_dnode(&dn); | |
266 | } | |
267 | next: | |
63c52d78 | 268 | /* we don't need to invalidate this in the sccessful status */ |
2baf0781 | 269 | if (drop || recover) { |
63c52d78 | 270 | ClearPageUptodate(page); |
2baf0781 CY |
271 | clear_cold_data(page); |
272 | } | |
28bc106b | 273 | set_page_private(page, 0); |
c81ced05 | 274 | ClearPagePrivate(page); |
28bc106b | 275 | f2fs_put_page(page, 1); |
29b96b54 CY |
276 | |
277 | list_del(&cur->list); | |
278 | kmem_cache_free(inmem_entry_slab, cur); | |
279 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
280 | } | |
28bc106b | 281 | return err; |
29b96b54 CY |
282 | } |
283 | ||
4d57b86d | 284 | void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure) |
57864ae5 JK |
285 | { |
286 | struct list_head *head = &sbi->inode_list[ATOMIC_FILE]; | |
287 | struct inode *inode; | |
288 | struct f2fs_inode_info *fi; | |
289 | next: | |
290 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
291 | if (list_empty(head)) { | |
292 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
293 | return; | |
294 | } | |
295 | fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist); | |
296 | inode = igrab(&fi->vfs_inode); | |
297 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
298 | ||
299 | if (inode) { | |
2ef79ecb CY |
300 | if (gc_failure) { |
301 | if (fi->i_gc_failures[GC_FAILURE_ATOMIC]) | |
302 | goto drop; | |
303 | goto skip; | |
304 | } | |
305 | drop: | |
306 | set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); | |
4d57b86d | 307 | f2fs_drop_inmem_pages(inode); |
57864ae5 JK |
308 | iput(inode); |
309 | } | |
2ef79ecb | 310 | skip: |
57864ae5 JK |
311 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
312 | cond_resched(); | |
313 | goto next; | |
314 | } | |
315 | ||
4d57b86d | 316 | void f2fs_drop_inmem_pages(struct inode *inode) |
29b96b54 | 317 | { |
57864ae5 | 318 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 CY |
319 | struct f2fs_inode_info *fi = F2FS_I(inode); |
320 | ||
321 | mutex_lock(&fi->inmem_lock); | |
28bc106b | 322 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); |
57864ae5 JK |
323 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
324 | if (!list_empty(&fi->inmem_ilist)) | |
325 | list_del_init(&fi->inmem_ilist); | |
326 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
29b96b54 | 327 | mutex_unlock(&fi->inmem_lock); |
5fe45743 CY |
328 | |
329 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
2ef79ecb | 330 | fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
5fe45743 | 331 | stat_dec_atomic_write(inode); |
29b96b54 CY |
332 | } |
333 | ||
4d57b86d | 334 | void f2fs_drop_inmem_page(struct inode *inode, struct page *page) |
8c242db9 JK |
335 | { |
336 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
337 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
338 | struct list_head *head = &fi->inmem_pages; | |
339 | struct inmem_pages *cur = NULL; | |
340 | ||
341 | f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page)); | |
342 | ||
343 | mutex_lock(&fi->inmem_lock); | |
344 | list_for_each_entry(cur, head, list) { | |
345 | if (cur->page == page) | |
346 | break; | |
347 | } | |
348 | ||
d0891e84 | 349 | f2fs_bug_on(sbi, list_empty(head) || cur->page != page); |
8c242db9 JK |
350 | list_del(&cur->list); |
351 | mutex_unlock(&fi->inmem_lock); | |
352 | ||
353 | dec_page_count(sbi, F2FS_INMEM_PAGES); | |
354 | kmem_cache_free(inmem_entry_slab, cur); | |
355 | ||
356 | ClearPageUptodate(page); | |
357 | set_page_private(page, 0); | |
358 | ClearPagePrivate(page); | |
359 | f2fs_put_page(page, 0); | |
360 | ||
361 | trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE); | |
362 | } | |
363 | ||
4d57b86d | 364 | static int __f2fs_commit_inmem_pages(struct inode *inode) |
88b88a66 JK |
365 | { |
366 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
367 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
368 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 369 | struct f2fs_io_info fio = { |
05ca3632 | 370 | .sbi = sbi, |
39d787be | 371 | .ino = inode->i_ino, |
88b88a66 | 372 | .type = DATA, |
04d328de | 373 | .op = REQ_OP_WRITE, |
70fd7614 | 374 | .op_flags = REQ_SYNC | REQ_PRIO, |
b0af6d49 | 375 | .io_type = FS_DATA_IO, |
88b88a66 | 376 | }; |
cf52b27a | 377 | struct list_head revoke_list; |
bab475c5 | 378 | bool submit_bio = false; |
edb27dee | 379 | int err = 0; |
88b88a66 | 380 | |
cf52b27a CY |
381 | INIT_LIST_HEAD(&revoke_list); |
382 | ||
88b88a66 | 383 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
384 | struct page *page = cur->page; |
385 | ||
386 | lock_page(page); | |
387 | if (page->mapping == inode->i_mapping) { | |
388 | trace_f2fs_commit_inmem_page(page, INMEM); | |
389 | ||
bae0ee7a | 390 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
8d64d365 CY |
391 | |
392 | set_page_dirty(page); | |
933439c8 | 393 | if (clear_page_dirty_for_io(page)) { |
29b96b54 | 394 | inode_dec_dirty_pages(inode); |
4d57b86d | 395 | f2fs_remove_dirty_inode(inode); |
933439c8 | 396 | } |
640cc189 | 397 | retry: |
28bc106b | 398 | fio.page = page; |
e959c8f5 | 399 | fio.old_blkaddr = NULL_ADDR; |
4d978078 | 400 | fio.encrypted_page = NULL; |
cc15620b | 401 | fio.need_lock = LOCK_DONE; |
4d57b86d | 402 | err = f2fs_do_write_data_page(&fio); |
29b96b54 | 403 | if (err) { |
640cc189 JK |
404 | if (err == -ENOMEM) { |
405 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
406 | cond_resched(); | |
407 | goto retry; | |
408 | } | |
28bc106b | 409 | unlock_page(page); |
29b96b54 | 410 | break; |
70c640b1 | 411 | } |
28bc106b CY |
412 | /* record old blkaddr for revoking */ |
413 | cur->old_addr = fio.old_blkaddr; | |
bab475c5 | 414 | submit_bio = true; |
28bc106b CY |
415 | } |
416 | unlock_page(page); | |
cf52b27a | 417 | list_move_tail(&cur->list, &revoke_list); |
88b88a66 | 418 | } |
29b96b54 | 419 | |
bab475c5 CY |
420 | if (submit_bio) |
421 | f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA); | |
28bc106b | 422 | |
cf52b27a CY |
423 | if (err) { |
424 | /* | |
425 | * try to revoke all committed pages, but still we could fail | |
426 | * due to no memory or other reason, if that happened, EAGAIN | |
427 | * will be returned, which means in such case, transaction is | |
428 | * already not integrity, caller should use journal to do the | |
429 | * recovery or rewrite & commit last transaction. For other | |
430 | * error number, revoking was done by filesystem itself. | |
431 | */ | |
432 | err = __revoke_inmem_pages(inode, &revoke_list, false, true); | |
433 | ||
434 | /* drop all uncommitted pages */ | |
435 | __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); | |
436 | } else { | |
437 | __revoke_inmem_pages(inode, &revoke_list, false, false); | |
438 | } | |
28bc106b | 439 | |
29b96b54 CY |
440 | return err; |
441 | } | |
442 | ||
4d57b86d | 443 | int f2fs_commit_inmem_pages(struct inode *inode) |
29b96b54 CY |
444 | { |
445 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
446 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b | 447 | int err; |
29b96b54 CY |
448 | |
449 | f2fs_balance_fs(sbi, true); | |
29b96b54 | 450 | |
6f8d4455 JK |
451 | down_write(&fi->i_gc_rwsem[WRITE]); |
452 | ||
453 | f2fs_lock_op(sbi); | |
5fe45743 CY |
454 | set_inode_flag(inode, FI_ATOMIC_COMMIT); |
455 | ||
29b96b54 | 456 | mutex_lock(&fi->inmem_lock); |
4d57b86d | 457 | err = __f2fs_commit_inmem_pages(inode); |
28bc106b | 458 | |
57864ae5 JK |
459 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
460 | if (!list_empty(&fi->inmem_ilist)) | |
461 | list_del_init(&fi->inmem_ilist); | |
462 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
88b88a66 JK |
463 | mutex_unlock(&fi->inmem_lock); |
464 | ||
5fe45743 CY |
465 | clear_inode_flag(inode, FI_ATOMIC_COMMIT); |
466 | ||
29b96b54 | 467 | f2fs_unlock_op(sbi); |
6f8d4455 JK |
468 | up_write(&fi->i_gc_rwsem[WRITE]); |
469 | ||
edb27dee | 470 | return err; |
88b88a66 JK |
471 | } |
472 | ||
0a8165d7 | 473 | /* |
351df4b2 JK |
474 | * This function balances dirty node and dentry pages. |
475 | * In addition, it controls garbage collection. | |
476 | */ | |
2c4db1a6 | 477 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 478 | { |
55523519 CY |
479 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) { |
480 | f2fs_show_injection_info(FAULT_CHECKPOINT); | |
0f348028 | 481 | f2fs_stop_checkpoint(sbi, false); |
55523519 | 482 | } |
0f348028 | 483 | |
e589c2c4 | 484 | /* balance_fs_bg is able to be pending */ |
a7881893 | 485 | if (need && excess_cached_nats(sbi)) |
e589c2c4 JK |
486 | f2fs_balance_fs_bg(sbi); |
487 | ||
4354994f DR |
488 | if (f2fs_is_checkpoint_ready(sbi)) |
489 | return; | |
490 | ||
351df4b2 | 491 | /* |
029cd28c JK |
492 | * We should do GC or end up with checkpoint, if there are so many dirty |
493 | * dir/node pages without enough free segments. | |
351df4b2 | 494 | */ |
7f3037a5 | 495 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
351df4b2 | 496 | mutex_lock(&sbi->gc_mutex); |
e066b83c | 497 | f2fs_gc(sbi, false, false, NULL_SEGNO); |
351df4b2 JK |
498 | } |
499 | } | |
500 | ||
4660f9c0 JK |
501 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) |
502 | { | |
64c74a7a CY |
503 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
504 | return; | |
505 | ||
1dcc336b | 506 | /* try to shrink extent cache when there is no enough memory */ |
4d57b86d | 507 | if (!f2fs_available_free_memory(sbi, EXTENT_CACHE)) |
554df79e | 508 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); |
1dcc336b | 509 | |
1b38dc8e | 510 | /* check the # of cached NAT entries */ |
4d57b86d CY |
511 | if (!f2fs_available_free_memory(sbi, NAT_ENTRIES)) |
512 | f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
1b38dc8e | 513 | |
4d57b86d CY |
514 | if (!f2fs_available_free_memory(sbi, FREE_NIDS)) |
515 | f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS); | |
ad4edb83 | 516 | else |
4d57b86d | 517 | f2fs_build_free_nids(sbi, false, false); |
31696580 | 518 | |
a7d10cf3 | 519 | if (!is_idle(sbi, REQ_TIME) && |
fd8c8caf | 520 | (!excess_dirty_nats(sbi) && !excess_dirty_nodes(sbi))) |
f455c8a5 | 521 | return; |
31696580 | 522 | |
1b38dc8e | 523 | /* checkpoint is the only way to shrink partial cached entries */ |
4d57b86d CY |
524 | if (!f2fs_available_free_memory(sbi, NAT_ENTRIES) || |
525 | !f2fs_available_free_memory(sbi, INO_ENTRIES) || | |
7d768d2c CY |
526 | excess_prefree_segs(sbi) || |
527 | excess_dirty_nats(sbi) || | |
fd8c8caf | 528 | excess_dirty_nodes(sbi) || |
f455c8a5 | 529 | f2fs_time_over(sbi, CP_TIME)) { |
e9f5b8b8 CY |
530 | if (test_opt(sbi, DATA_FLUSH)) { |
531 | struct blk_plug plug; | |
532 | ||
533 | blk_start_plug(&plug); | |
4d57b86d | 534 | f2fs_sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 CY |
535 | blk_finish_plug(&plug); |
536 | } | |
4660f9c0 | 537 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 538 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 539 | } |
4660f9c0 JK |
540 | } |
541 | ||
20fda56b KM |
542 | static int __submit_flush_wait(struct f2fs_sb_info *sbi, |
543 | struct block_device *bdev) | |
3c62be17 | 544 | { |
dc37910d | 545 | struct bio *bio; |
3c62be17 JK |
546 | int ret; |
547 | ||
dc37910d CY |
548 | bio = f2fs_bio_alloc(sbi, 0, false); |
549 | if (!bio) | |
550 | return -ENOMEM; | |
551 | ||
3adc5fcb | 552 | bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; |
74d46992 | 553 | bio_set_dev(bio, bdev); |
3c62be17 JK |
554 | ret = submit_bio_wait(bio); |
555 | bio_put(bio); | |
20fda56b KM |
556 | |
557 | trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER), | |
558 | test_opt(sbi, FLUSH_MERGE), ret); | |
3c62be17 JK |
559 | return ret; |
560 | } | |
561 | ||
39d787be | 562 | static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino) |
3c62be17 | 563 | { |
39d787be | 564 | int ret = 0; |
3c62be17 JK |
565 | int i; |
566 | ||
39d787be CY |
567 | if (!sbi->s_ndevs) |
568 | return __submit_flush_wait(sbi, sbi->sb->s_bdev); | |
20fda56b | 569 | |
39d787be | 570 | for (i = 0; i < sbi->s_ndevs; i++) { |
4d57b86d | 571 | if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO)) |
39d787be | 572 | continue; |
20fda56b KM |
573 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); |
574 | if (ret) | |
575 | break; | |
3c62be17 JK |
576 | } |
577 | return ret; | |
578 | } | |
579 | ||
2163d198 | 580 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
581 | { |
582 | struct f2fs_sb_info *sbi = data; | |
b01a9201 | 583 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
a688b9d9 | 584 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
6b4afdd7 JK |
585 | repeat: |
586 | if (kthread_should_stop()) | |
587 | return 0; | |
588 | ||
dc6febb6 CY |
589 | sb_start_intwrite(sbi->sb); |
590 | ||
721bd4d5 | 591 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
592 | struct flush_cmd *cmd, *next; |
593 | int ret; | |
594 | ||
721bd4d5 GZ |
595 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
596 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
597 | ||
39d787be CY |
598 | cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode); |
599 | ||
600 | ret = submit_flush_wait(sbi, cmd->ino); | |
8b8dd65f CY |
601 | atomic_inc(&fcc->issued_flush); |
602 | ||
721bd4d5 GZ |
603 | llist_for_each_entry_safe(cmd, next, |
604 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 605 | cmd->ret = ret; |
6b4afdd7 JK |
606 | complete(&cmd->wait); |
607 | } | |
a688b9d9 | 608 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
609 | } |
610 | ||
dc6febb6 CY |
611 | sb_end_intwrite(sbi->sb); |
612 | ||
a688b9d9 | 613 | wait_event_interruptible(*q, |
721bd4d5 | 614 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
615 | goto repeat; |
616 | } | |
617 | ||
39d787be | 618 | int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino) |
6b4afdd7 | 619 | { |
b01a9201 | 620 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
adf8d90b | 621 | struct flush_cmd cmd; |
8b8dd65f | 622 | int ret; |
6b4afdd7 | 623 | |
0f7b2abd JK |
624 | if (test_opt(sbi, NOBARRIER)) |
625 | return 0; | |
626 | ||
8b8dd65f | 627 | if (!test_opt(sbi, FLUSH_MERGE)) { |
72691af6 | 628 | atomic_inc(&fcc->queued_flush); |
39d787be | 629 | ret = submit_flush_wait(sbi, ino); |
72691af6 | 630 | atomic_dec(&fcc->queued_flush); |
8b8dd65f CY |
631 | atomic_inc(&fcc->issued_flush); |
632 | return ret; | |
633 | } | |
740432f8 | 634 | |
72691af6 | 635 | if (atomic_inc_return(&fcc->queued_flush) == 1 || sbi->s_ndevs > 1) { |
39d787be | 636 | ret = submit_flush_wait(sbi, ino); |
72691af6 | 637 | atomic_dec(&fcc->queued_flush); |
8b8dd65f CY |
638 | |
639 | atomic_inc(&fcc->issued_flush); | |
740432f8 JK |
640 | return ret; |
641 | } | |
6b4afdd7 | 642 | |
39d787be | 643 | cmd.ino = ino; |
adf8d90b | 644 | init_completion(&cmd.wait); |
6b4afdd7 | 645 | |
721bd4d5 | 646 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 647 | |
6f890df0 CY |
648 | /* update issue_list before we wake up issue_flush thread */ |
649 | smp_mb(); | |
650 | ||
651 | if (waitqueue_active(&fcc->flush_wait_queue)) | |
a688b9d9 | 652 | wake_up(&fcc->flush_wait_queue); |
6b4afdd7 | 653 | |
5eba8c5d JK |
654 | if (fcc->f2fs_issue_flush) { |
655 | wait_for_completion(&cmd.wait); | |
72691af6 | 656 | atomic_dec(&fcc->queued_flush); |
5eba8c5d | 657 | } else { |
d3238691 CY |
658 | struct llist_node *list; |
659 | ||
660 | list = llist_del_all(&fcc->issue_list); | |
661 | if (!list) { | |
662 | wait_for_completion(&cmd.wait); | |
72691af6 | 663 | atomic_dec(&fcc->queued_flush); |
d3238691 CY |
664 | } else { |
665 | struct flush_cmd *tmp, *next; | |
666 | ||
39d787be | 667 | ret = submit_flush_wait(sbi, ino); |
d3238691 CY |
668 | |
669 | llist_for_each_entry_safe(tmp, next, list, llnode) { | |
670 | if (tmp == &cmd) { | |
671 | cmd.ret = ret; | |
72691af6 | 672 | atomic_dec(&fcc->queued_flush); |
d3238691 CY |
673 | continue; |
674 | } | |
675 | tmp->ret = ret; | |
676 | complete(&tmp->wait); | |
677 | } | |
678 | } | |
5eba8c5d | 679 | } |
adf8d90b CY |
680 | |
681 | return cmd.ret; | |
6b4afdd7 JK |
682 | } |
683 | ||
4d57b86d | 684 | int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi) |
2163d198 GZ |
685 | { |
686 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
687 | struct flush_cmd_control *fcc; | |
688 | int err = 0; | |
689 | ||
b01a9201 JK |
690 | if (SM_I(sbi)->fcc_info) { |
691 | fcc = SM_I(sbi)->fcc_info; | |
d871cd04 YS |
692 | if (fcc->f2fs_issue_flush) |
693 | return err; | |
5eba8c5d JK |
694 | goto init_thread; |
695 | } | |
696 | ||
acbf054d | 697 | fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL); |
2163d198 GZ |
698 | if (!fcc) |
699 | return -ENOMEM; | |
8b8dd65f | 700 | atomic_set(&fcc->issued_flush, 0); |
72691af6 | 701 | atomic_set(&fcc->queued_flush, 0); |
2163d198 | 702 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 703 | init_llist_head(&fcc->issue_list); |
b01a9201 | 704 | SM_I(sbi)->fcc_info = fcc; |
d4fdf8ba YH |
705 | if (!test_opt(sbi, FLUSH_MERGE)) |
706 | return err; | |
707 | ||
5eba8c5d | 708 | init_thread: |
2163d198 GZ |
709 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
710 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
711 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
712 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
5222595d | 713 | kvfree(fcc); |
b01a9201 | 714 | SM_I(sbi)->fcc_info = NULL; |
2163d198 GZ |
715 | return err; |
716 | } | |
2163d198 GZ |
717 | |
718 | return err; | |
719 | } | |
720 | ||
4d57b86d | 721 | void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free) |
2163d198 | 722 | { |
b01a9201 | 723 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
2163d198 | 724 | |
5eba8c5d JK |
725 | if (fcc && fcc->f2fs_issue_flush) { |
726 | struct task_struct *flush_thread = fcc->f2fs_issue_flush; | |
727 | ||
728 | fcc->f2fs_issue_flush = NULL; | |
729 | kthread_stop(flush_thread); | |
730 | } | |
731 | if (free) { | |
5222595d | 732 | kvfree(fcc); |
b01a9201 | 733 | SM_I(sbi)->fcc_info = NULL; |
5eba8c5d | 734 | } |
2163d198 GZ |
735 | } |
736 | ||
1228b482 CY |
737 | int f2fs_flush_device_cache(struct f2fs_sb_info *sbi) |
738 | { | |
739 | int ret = 0, i; | |
740 | ||
741 | if (!sbi->s_ndevs) | |
742 | return 0; | |
743 | ||
744 | for (i = 1; i < sbi->s_ndevs; i++) { | |
745 | if (!f2fs_test_bit(i, (char *)&sbi->dirty_device)) | |
746 | continue; | |
747 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); | |
748 | if (ret) | |
749 | break; | |
750 | ||
751 | spin_lock(&sbi->dev_lock); | |
752 | f2fs_clear_bit(i, (char *)&sbi->dirty_device); | |
753 | spin_unlock(&sbi->dev_lock); | |
754 | } | |
755 | ||
756 | return ret; | |
757 | } | |
758 | ||
351df4b2 JK |
759 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
760 | enum dirty_type dirty_type) | |
761 | { | |
762 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
763 | ||
764 | /* need not be added */ | |
765 | if (IS_CURSEG(sbi, segno)) | |
766 | return; | |
767 | ||
768 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
769 | dirty_i->nr_dirty[dirty_type]++; | |
770 | ||
771 | if (dirty_type == DIRTY) { | |
772 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 773 | enum dirty_type t = sentry->type; |
b2f2c390 | 774 | |
ec325b52 JK |
775 | if (unlikely(t >= DIRTY)) { |
776 | f2fs_bug_on(sbi, 1); | |
777 | return; | |
778 | } | |
4625d6aa CL |
779 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
780 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
781 | } |
782 | } | |
783 | ||
784 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
785 | enum dirty_type dirty_type) | |
786 | { | |
787 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
788 | ||
789 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
790 | dirty_i->nr_dirty[dirty_type]--; | |
791 | ||
792 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
793 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
794 | enum dirty_type t = sentry->type; | |
795 | ||
796 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
797 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 798 | |
302bd348 | 799 | if (get_valid_blocks(sbi, segno, true) == 0) |
4ddb1a4d | 800 | clear_bit(GET_SEC_FROM_SEG(sbi, segno), |
5ec4e49f | 801 | dirty_i->victim_secmap); |
351df4b2 JK |
802 | } |
803 | } | |
804 | ||
0a8165d7 | 805 | /* |
351df4b2 JK |
806 | * Should not occur error such as -ENOMEM. |
807 | * Adding dirty entry into seglist is not critical operation. | |
808 | * If a given segment is one of current working segments, it won't be added. | |
809 | */ | |
8d8451af | 810 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
811 | { |
812 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4354994f | 813 | unsigned short valid_blocks, ckpt_valid_blocks; |
351df4b2 JK |
814 | |
815 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
816 | return; | |
817 | ||
818 | mutex_lock(&dirty_i->seglist_lock); | |
819 | ||
302bd348 | 820 | valid_blocks = get_valid_blocks(sbi, segno, false); |
4354994f | 821 | ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno); |
351df4b2 | 822 | |
4354994f DR |
823 | if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) || |
824 | ckpt_valid_blocks == sbi->blocks_per_seg)) { | |
351df4b2 JK |
825 | __locate_dirty_segment(sbi, segno, PRE); |
826 | __remove_dirty_segment(sbi, segno, DIRTY); | |
827 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
828 | __locate_dirty_segment(sbi, segno, DIRTY); | |
829 | } else { | |
830 | /* Recovery routine with SSR needs this */ | |
831 | __remove_dirty_segment(sbi, segno, DIRTY); | |
832 | } | |
833 | ||
834 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
835 | } |
836 | ||
4354994f DR |
837 | /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */ |
838 | void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi) | |
839 | { | |
840 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
841 | unsigned int segno; | |
842 | ||
843 | mutex_lock(&dirty_i->seglist_lock); | |
844 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
845 | if (get_valid_blocks(sbi, segno, false)) | |
846 | continue; | |
847 | if (IS_CURSEG(sbi, segno)) | |
848 | continue; | |
849 | __locate_dirty_segment(sbi, segno, PRE); | |
850 | __remove_dirty_segment(sbi, segno, DIRTY); | |
851 | } | |
852 | mutex_unlock(&dirty_i->seglist_lock); | |
853 | } | |
854 | ||
855 | int f2fs_disable_cp_again(struct f2fs_sb_info *sbi) | |
856 | { | |
857 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
858 | block_t ovp = overprovision_segments(sbi) << sbi->log_blocks_per_seg; | |
859 | block_t holes[2] = {0, 0}; /* DATA and NODE */ | |
860 | struct seg_entry *se; | |
861 | unsigned int segno; | |
862 | ||
863 | mutex_lock(&dirty_i->seglist_lock); | |
864 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
865 | se = get_seg_entry(sbi, segno); | |
866 | if (IS_NODESEG(se->type)) | |
867 | holes[NODE] += sbi->blocks_per_seg - se->valid_blocks; | |
868 | else | |
869 | holes[DATA] += sbi->blocks_per_seg - se->valid_blocks; | |
870 | } | |
871 | mutex_unlock(&dirty_i->seglist_lock); | |
872 | ||
873 | if (holes[DATA] > ovp || holes[NODE] > ovp) | |
874 | return -EAGAIN; | |
db610a64 JK |
875 | if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) && |
876 | dirty_segments(sbi) > overprovision_segments(sbi)) | |
877 | return -EAGAIN; | |
4354994f DR |
878 | return 0; |
879 | } | |
880 | ||
881 | /* This is only used by SBI_CP_DISABLED */ | |
882 | static unsigned int get_free_segment(struct f2fs_sb_info *sbi) | |
883 | { | |
884 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
885 | unsigned int segno = 0; | |
886 | ||
887 | mutex_lock(&dirty_i->seglist_lock); | |
888 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
889 | if (get_valid_blocks(sbi, segno, false)) | |
890 | continue; | |
891 | if (get_ckpt_valid_blocks(sbi, segno)) | |
892 | continue; | |
893 | mutex_unlock(&dirty_i->seglist_lock); | |
894 | return segno; | |
895 | } | |
896 | mutex_unlock(&dirty_i->seglist_lock); | |
897 | return NULL_SEGNO; | |
898 | } | |
899 | ||
004b6862 | 900 | static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi, |
c81abe34 JK |
901 | struct block_device *bdev, block_t lstart, |
902 | block_t start, block_t len) | |
275b66b0 | 903 | { |
0b54fb84 | 904 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
ba48a33e | 905 | struct list_head *pend_list; |
b01a9201 | 906 | struct discard_cmd *dc; |
275b66b0 | 907 | |
ba48a33e CY |
908 | f2fs_bug_on(sbi, !len); |
909 | ||
910 | pend_list = &dcc->pend_list[plist_idx(len)]; | |
911 | ||
b01a9201 JK |
912 | dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS); |
913 | INIT_LIST_HEAD(&dc->list); | |
c81abe34 | 914 | dc->bdev = bdev; |
b01a9201 | 915 | dc->lstart = lstart; |
c81abe34 | 916 | dc->start = start; |
b01a9201 | 917 | dc->len = len; |
ec9895ad | 918 | dc->ref = 0; |
15469963 | 919 | dc->state = D_PREP; |
72691af6 | 920 | dc->queued = 0; |
c81abe34 | 921 | dc->error = 0; |
b01a9201 | 922 | init_completion(&dc->wait); |
22d375dd | 923 | list_add_tail(&dc->list, pend_list); |
35ec7d57 CY |
924 | spin_lock_init(&dc->lock); |
925 | dc->bio_ref = 0; | |
5f32366a | 926 | atomic_inc(&dcc->discard_cmd_cnt); |
d84d1cbd | 927 | dcc->undiscard_blks += len; |
004b6862 CY |
928 | |
929 | return dc; | |
930 | } | |
931 | ||
932 | static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi, | |
933 | struct block_device *bdev, block_t lstart, | |
934 | block_t start, block_t len, | |
4dada3fd CY |
935 | struct rb_node *parent, struct rb_node **p, |
936 | bool leftmost) | |
004b6862 CY |
937 | { |
938 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
939 | struct discard_cmd *dc; | |
940 | ||
941 | dc = __create_discard_cmd(sbi, bdev, lstart, start, len); | |
942 | ||
943 | rb_link_node(&dc->rb_node, parent, p); | |
4dada3fd | 944 | rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost); |
004b6862 CY |
945 | |
946 | return dc; | |
15469963 JK |
947 | } |
948 | ||
004b6862 CY |
949 | static void __detach_discard_cmd(struct discard_cmd_control *dcc, |
950 | struct discard_cmd *dc) | |
15469963 | 951 | { |
dcc9165d | 952 | if (dc->state == D_DONE) |
72691af6 | 953 | atomic_sub(dc->queued, &dcc->queued_discard); |
004b6862 CY |
954 | |
955 | list_del(&dc->list); | |
4dada3fd | 956 | rb_erase_cached(&dc->rb_node, &dcc->root); |
d84d1cbd | 957 | dcc->undiscard_blks -= dc->len; |
004b6862 CY |
958 | |
959 | kmem_cache_free(discard_cmd_slab, dc); | |
960 | ||
961 | atomic_dec(&dcc->discard_cmd_cnt); | |
962 | } | |
963 | ||
964 | static void __remove_discard_cmd(struct f2fs_sb_info *sbi, | |
965 | struct discard_cmd *dc) | |
966 | { | |
967 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
35ec7d57 | 968 | unsigned long flags; |
dcc9165d | 969 | |
2ec6f2ef CY |
970 | trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len); |
971 | ||
35ec7d57 CY |
972 | spin_lock_irqsave(&dc->lock, flags); |
973 | if (dc->bio_ref) { | |
974 | spin_unlock_irqrestore(&dc->lock, flags); | |
975 | return; | |
976 | } | |
977 | spin_unlock_irqrestore(&dc->lock, flags); | |
978 | ||
d9703d90 CY |
979 | f2fs_bug_on(sbi, dc->ref); |
980 | ||
c81abe34 JK |
981 | if (dc->error == -EOPNOTSUPP) |
982 | dc->error = 0; | |
15469963 | 983 | |
c81abe34 | 984 | if (dc->error) |
22d7ea13 CY |
985 | printk_ratelimited( |
986 | "%sF2FS-fs: Issue discard(%u, %u, %u) failed, ret: %d", | |
987 | KERN_INFO, dc->lstart, dc->start, dc->len, dc->error); | |
004b6862 | 988 | __detach_discard_cmd(dcc, dc); |
275b66b0 CY |
989 | } |
990 | ||
c81abe34 JK |
991 | static void f2fs_submit_discard_endio(struct bio *bio) |
992 | { | |
993 | struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; | |
35ec7d57 | 994 | unsigned long flags; |
c81abe34 | 995 | |
4e4cbee9 | 996 | dc->error = blk_status_to_errno(bio->bi_status); |
35ec7d57 CY |
997 | |
998 | spin_lock_irqsave(&dc->lock, flags); | |
999 | dc->bio_ref--; | |
1000 | if (!dc->bio_ref && dc->state == D_SUBMIT) { | |
1001 | dc->state = D_DONE; | |
1002 | complete_all(&dc->wait); | |
1003 | } | |
1004 | spin_unlock_irqrestore(&dc->lock, flags); | |
c81abe34 JK |
1005 | bio_put(bio); |
1006 | } | |
1007 | ||
94b1e10e | 1008 | static void __check_sit_bitmap(struct f2fs_sb_info *sbi, |
6915ea9d CY |
1009 | block_t start, block_t end) |
1010 | { | |
1011 | #ifdef CONFIG_F2FS_CHECK_FS | |
1012 | struct seg_entry *sentry; | |
1013 | unsigned int segno; | |
1014 | block_t blk = start; | |
1015 | unsigned long offset, size, max_blocks = sbi->blocks_per_seg; | |
1016 | unsigned long *map; | |
1017 | ||
1018 | while (blk < end) { | |
1019 | segno = GET_SEGNO(sbi, blk); | |
1020 | sentry = get_seg_entry(sbi, segno); | |
1021 | offset = GET_BLKOFF_FROM_SEG0(sbi, blk); | |
1022 | ||
008396e1 YS |
1023 | if (end < START_BLOCK(sbi, segno + 1)) |
1024 | size = GET_BLKOFF_FROM_SEG0(sbi, end); | |
1025 | else | |
1026 | size = max_blocks; | |
6915ea9d CY |
1027 | map = (unsigned long *)(sentry->cur_valid_map); |
1028 | offset = __find_rev_next_bit(map, size, offset); | |
1029 | f2fs_bug_on(sbi, offset != size); | |
008396e1 | 1030 | blk = START_BLOCK(sbi, segno + 1); |
6915ea9d CY |
1031 | } |
1032 | #endif | |
1033 | } | |
1034 | ||
8bb4f253 JK |
1035 | static void __init_discard_policy(struct f2fs_sb_info *sbi, |
1036 | struct discard_policy *dpolicy, | |
1037 | int discard_type, unsigned int granularity) | |
1038 | { | |
1039 | /* common policy */ | |
1040 | dpolicy->type = discard_type; | |
1041 | dpolicy->sync = true; | |
20ee4382 | 1042 | dpolicy->ordered = false; |
8bb4f253 JK |
1043 | dpolicy->granularity = granularity; |
1044 | ||
1045 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1046 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
03f2c02d | 1047 | dpolicy->timeout = 0; |
8bb4f253 JK |
1048 | |
1049 | if (discard_type == DPOLICY_BG) { | |
1050 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
f9d1dced | 1051 | dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; |
8bb4f253 JK |
1052 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; |
1053 | dpolicy->io_aware = true; | |
cba60849 | 1054 | dpolicy->sync = false; |
20ee4382 | 1055 | dpolicy->ordered = true; |
8bb4f253 JK |
1056 | if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) { |
1057 | dpolicy->granularity = 1; | |
1058 | dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1059 | } | |
1060 | } else if (discard_type == DPOLICY_FORCE) { | |
1061 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
f9d1dced | 1062 | dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; |
8bb4f253 JK |
1063 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; |
1064 | dpolicy->io_aware = false; | |
1065 | } else if (discard_type == DPOLICY_FSTRIM) { | |
1066 | dpolicy->io_aware = false; | |
1067 | } else if (discard_type == DPOLICY_UMOUNT) { | |
241b493d | 1068 | dpolicy->max_requests = UINT_MAX; |
8bb4f253 | 1069 | dpolicy->io_aware = false; |
b8623253 JK |
1070 | /* we need to issue all to keep CP_TRIMMED_FLAG */ |
1071 | dpolicy->granularity = 1; | |
8bb4f253 JK |
1072 | } |
1073 | } | |
1074 | ||
35ec7d57 CY |
1075 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1076 | struct block_device *bdev, block_t lstart, | |
1077 | block_t start, block_t len); | |
c81abe34 | 1078 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ |
6b9cb124 | 1079 | static int __submit_discard_cmd(struct f2fs_sb_info *sbi, |
78997b56 | 1080 | struct discard_policy *dpolicy, |
35ec7d57 CY |
1081 | struct discard_cmd *dc, |
1082 | unsigned int *issued) | |
c81abe34 | 1083 | { |
35ec7d57 CY |
1084 | struct block_device *bdev = dc->bdev; |
1085 | struct request_queue *q = bdev_get_queue(bdev); | |
1086 | unsigned int max_discard_blocks = | |
1087 | SECTOR_TO_BLOCK(q->limits.max_discard_sectors); | |
c81abe34 | 1088 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
78997b56 CY |
1089 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1090 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
78997b56 | 1091 | int flag = dpolicy->sync ? REQ_SYNC : 0; |
35ec7d57 CY |
1092 | block_t lstart, start, len, total_len; |
1093 | int err = 0; | |
c81abe34 JK |
1094 | |
1095 | if (dc->state != D_PREP) | |
6b9cb124 | 1096 | return 0; |
c81abe34 | 1097 | |
d6184774 | 1098 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
6b9cb124 | 1099 | return 0; |
d6184774 | 1100 | |
35ec7d57 CY |
1101 | trace_f2fs_issue_discard(bdev, dc->start, dc->len); |
1102 | ||
1103 | lstart = dc->lstart; | |
1104 | start = dc->start; | |
1105 | len = dc->len; | |
1106 | total_len = len; | |
1107 | ||
1108 | dc->len = 0; | |
1109 | ||
1110 | while (total_len && *issued < dpolicy->max_requests && !err) { | |
1111 | struct bio *bio = NULL; | |
1112 | unsigned long flags; | |
1113 | bool last = true; | |
1114 | ||
1115 | if (len > max_discard_blocks) { | |
1116 | len = max_discard_blocks; | |
1117 | last = false; | |
1118 | } | |
1119 | ||
1120 | (*issued)++; | |
1121 | if (*issued == dpolicy->max_requests) | |
1122 | last = true; | |
1123 | ||
1124 | dc->len += len; | |
1125 | ||
b83dcfe6 CY |
1126 | if (time_to_inject(sbi, FAULT_DISCARD)) { |
1127 | f2fs_show_injection_info(FAULT_DISCARD); | |
1128 | err = -EIO; | |
1129 | goto submit; | |
1130 | } | |
35ec7d57 CY |
1131 | err = __blkdev_issue_discard(bdev, |
1132 | SECTOR_FROM_BLOCK(start), | |
1133 | SECTOR_FROM_BLOCK(len), | |
1134 | GFP_NOFS, 0, &bio); | |
b83dcfe6 | 1135 | submit: |
6b9cb124 | 1136 | if (err) { |
35ec7d57 | 1137 | spin_lock_irqsave(&dc->lock, flags); |
6b9cb124 | 1138 | if (dc->state == D_PARTIAL) |
35ec7d57 | 1139 | dc->state = D_SUBMIT; |
35ec7d57 CY |
1140 | spin_unlock_irqrestore(&dc->lock, flags); |
1141 | ||
6b9cb124 CY |
1142 | break; |
1143 | } | |
35ec7d57 | 1144 | |
6b9cb124 | 1145 | f2fs_bug_on(sbi, !bio); |
35ec7d57 | 1146 | |
6b9cb124 CY |
1147 | /* |
1148 | * should keep before submission to avoid D_DONE | |
1149 | * right away | |
1150 | */ | |
1151 | spin_lock_irqsave(&dc->lock, flags); | |
1152 | if (last) | |
1153 | dc->state = D_SUBMIT; | |
1154 | else | |
1155 | dc->state = D_PARTIAL; | |
1156 | dc->bio_ref++; | |
1157 | spin_unlock_irqrestore(&dc->lock, flags); | |
35ec7d57 | 1158 | |
72691af6 JK |
1159 | atomic_inc(&dcc->queued_discard); |
1160 | dc->queued++; | |
6b9cb124 | 1161 | list_move_tail(&dc->list, wait_list); |
b0af6d49 | 1162 | |
6b9cb124 | 1163 | /* sanity check on discard range */ |
9249dded | 1164 | __check_sit_bitmap(sbi, lstart, lstart + len); |
35ec7d57 | 1165 | |
6b9cb124 CY |
1166 | bio->bi_private = dc; |
1167 | bio->bi_end_io = f2fs_submit_discard_endio; | |
1168 | bio->bi_opf |= flag; | |
1169 | submit_bio(bio); | |
1170 | ||
1171 | atomic_inc(&dcc->issued_discard); | |
1172 | ||
1173 | f2fs_update_iostat(sbi, FS_DISCARD, 1); | |
35ec7d57 CY |
1174 | |
1175 | lstart += len; | |
1176 | start += len; | |
1177 | total_len -= len; | |
1178 | len = total_len; | |
c81abe34 | 1179 | } |
35ec7d57 | 1180 | |
6b9cb124 | 1181 | if (!err && len) |
35ec7d57 | 1182 | __update_discard_tree_range(sbi, bdev, lstart, start, len); |
6b9cb124 | 1183 | return err; |
c81abe34 JK |
1184 | } |
1185 | ||
004b6862 CY |
1186 | static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi, |
1187 | struct block_device *bdev, block_t lstart, | |
1188 | block_t start, block_t len, | |
1189 | struct rb_node **insert_p, | |
1190 | struct rb_node *insert_parent) | |
c81abe34 | 1191 | { |
004b6862 | 1192 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
dca6951f | 1193 | struct rb_node **p; |
004b6862 CY |
1194 | struct rb_node *parent = NULL; |
1195 | struct discard_cmd *dc = NULL; | |
4dada3fd | 1196 | bool leftmost = true; |
004b6862 CY |
1197 | |
1198 | if (insert_p && insert_parent) { | |
1199 | parent = insert_parent; | |
1200 | p = insert_p; | |
1201 | goto do_insert; | |
1202 | } | |
c81abe34 | 1203 | |
4dada3fd CY |
1204 | p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent, |
1205 | lstart, &leftmost); | |
004b6862 | 1206 | do_insert: |
4dada3fd CY |
1207 | dc = __attach_discard_cmd(sbi, bdev, lstart, start, len, parent, |
1208 | p, leftmost); | |
004b6862 CY |
1209 | if (!dc) |
1210 | return NULL; | |
c81abe34 | 1211 | |
004b6862 | 1212 | return dc; |
c81abe34 JK |
1213 | } |
1214 | ||
ba48a33e CY |
1215 | static void __relocate_discard_cmd(struct discard_cmd_control *dcc, |
1216 | struct discard_cmd *dc) | |
1217 | { | |
1218 | list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]); | |
1219 | } | |
1220 | ||
3d6a650f YH |
1221 | static void __punch_discard_cmd(struct f2fs_sb_info *sbi, |
1222 | struct discard_cmd *dc, block_t blkaddr) | |
1223 | { | |
ba48a33e | 1224 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1225 | struct discard_info di = dc->di; |
1226 | bool modified = false; | |
3d6a650f | 1227 | |
004b6862 | 1228 | if (dc->state == D_DONE || dc->len == 1) { |
3d6a650f YH |
1229 | __remove_discard_cmd(sbi, dc); |
1230 | return; | |
1231 | } | |
1232 | ||
d84d1cbd CY |
1233 | dcc->undiscard_blks -= di.len; |
1234 | ||
004b6862 | 1235 | if (blkaddr > di.lstart) { |
3d6a650f | 1236 | dc->len = blkaddr - dc->lstart; |
d84d1cbd | 1237 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1238 | __relocate_discard_cmd(dcc, dc); |
004b6862 CY |
1239 | modified = true; |
1240 | } | |
1241 | ||
1242 | if (blkaddr < di.lstart + di.len - 1) { | |
1243 | if (modified) { | |
1244 | __insert_discard_tree(sbi, dc->bdev, blkaddr + 1, | |
1245 | di.start + blkaddr + 1 - di.lstart, | |
1246 | di.lstart + di.len - 1 - blkaddr, | |
1247 | NULL, NULL); | |
1248 | } else { | |
1249 | dc->lstart++; | |
1250 | dc->len--; | |
1251 | dc->start++; | |
d84d1cbd | 1252 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1253 | __relocate_discard_cmd(dcc, dc); |
004b6862 | 1254 | } |
3d6a650f YH |
1255 | } |
1256 | } | |
1257 | ||
004b6862 CY |
1258 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1259 | struct block_device *bdev, block_t lstart, | |
1260 | block_t start, block_t len) | |
275b66b0 | 1261 | { |
0b54fb84 | 1262 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1263 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; |
1264 | struct discard_cmd *dc; | |
1265 | struct discard_info di = {0}; | |
1266 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
35ec7d57 CY |
1267 | struct request_queue *q = bdev_get_queue(bdev); |
1268 | unsigned int max_discard_blocks = | |
1269 | SECTOR_TO_BLOCK(q->limits.max_discard_sectors); | |
004b6862 | 1270 | block_t end = lstart + len; |
275b66b0 | 1271 | |
4d57b86d | 1272 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, |
004b6862 CY |
1273 | NULL, lstart, |
1274 | (struct rb_entry **)&prev_dc, | |
1275 | (struct rb_entry **)&next_dc, | |
4dada3fd | 1276 | &insert_p, &insert_parent, true, NULL); |
004b6862 CY |
1277 | if (dc) |
1278 | prev_dc = dc; | |
1279 | ||
1280 | if (!prev_dc) { | |
1281 | di.lstart = lstart; | |
1282 | di.len = next_dc ? next_dc->lstart - lstart : len; | |
1283 | di.len = min(di.len, len); | |
1284 | di.start = start; | |
22d375dd | 1285 | } |
15469963 | 1286 | |
004b6862 CY |
1287 | while (1) { |
1288 | struct rb_node *node; | |
1289 | bool merged = false; | |
1290 | struct discard_cmd *tdc = NULL; | |
1291 | ||
1292 | if (prev_dc) { | |
1293 | di.lstart = prev_dc->lstart + prev_dc->len; | |
1294 | if (di.lstart < lstart) | |
1295 | di.lstart = lstart; | |
1296 | if (di.lstart >= end) | |
1297 | break; | |
1298 | ||
1299 | if (!next_dc || next_dc->lstart > end) | |
1300 | di.len = end - di.lstart; | |
1301 | else | |
1302 | di.len = next_dc->lstart - di.lstart; | |
1303 | di.start = start + di.lstart - lstart; | |
1304 | } | |
1305 | ||
1306 | if (!di.len) | |
1307 | goto next; | |
1308 | ||
1309 | if (prev_dc && prev_dc->state == D_PREP && | |
1310 | prev_dc->bdev == bdev && | |
35ec7d57 CY |
1311 | __is_discard_back_mergeable(&di, &prev_dc->di, |
1312 | max_discard_blocks)) { | |
004b6862 | 1313 | prev_dc->di.len += di.len; |
d84d1cbd | 1314 | dcc->undiscard_blks += di.len; |
ba48a33e | 1315 | __relocate_discard_cmd(dcc, prev_dc); |
004b6862 CY |
1316 | di = prev_dc->di; |
1317 | tdc = prev_dc; | |
1318 | merged = true; | |
1319 | } | |
1320 | ||
1321 | if (next_dc && next_dc->state == D_PREP && | |
1322 | next_dc->bdev == bdev && | |
35ec7d57 CY |
1323 | __is_discard_front_mergeable(&di, &next_dc->di, |
1324 | max_discard_blocks)) { | |
004b6862 CY |
1325 | next_dc->di.lstart = di.lstart; |
1326 | next_dc->di.len += di.len; | |
1327 | next_dc->di.start = di.start; | |
d84d1cbd | 1328 | dcc->undiscard_blks += di.len; |
ba48a33e | 1329 | __relocate_discard_cmd(dcc, next_dc); |
004b6862 CY |
1330 | if (tdc) |
1331 | __remove_discard_cmd(sbi, tdc); | |
004b6862 | 1332 | merged = true; |
4e6a8d9b | 1333 | } |
004b6862 | 1334 | |
df0f6b44 | 1335 | if (!merged) { |
004b6862 CY |
1336 | __insert_discard_tree(sbi, bdev, di.lstart, di.start, |
1337 | di.len, NULL, NULL); | |
df0f6b44 | 1338 | } |
004b6862 CY |
1339 | next: |
1340 | prev_dc = next_dc; | |
1341 | if (!prev_dc) | |
1342 | break; | |
1343 | ||
1344 | node = rb_next(&prev_dc->rb_node); | |
1345 | next_dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1346 | } | |
004b6862 CY |
1347 | } |
1348 | ||
1349 | static int __queue_discard_cmd(struct f2fs_sb_info *sbi, | |
1350 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1351 | { | |
1352 | block_t lblkstart = blkstart; | |
1353 | ||
0243a5f9 | 1354 | trace_f2fs_queue_discard(bdev, blkstart, blklen); |
004b6862 CY |
1355 | |
1356 | if (sbi->s_ndevs) { | |
1357 | int devi = f2fs_target_device_index(sbi, blkstart); | |
1358 | ||
1359 | blkstart -= FDEV(devi).start_blk; | |
1360 | } | |
35ec7d57 | 1361 | mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock); |
004b6862 | 1362 | __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); |
35ec7d57 | 1363 | mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock); |
004b6862 CY |
1364 | return 0; |
1365 | } | |
1366 | ||
20ee4382 CY |
1367 | static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi, |
1368 | struct discard_policy *dpolicy) | |
1369 | { | |
1370 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1371 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
1372 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1373 | struct discard_cmd *dc; | |
1374 | struct blk_plug plug; | |
1375 | unsigned int pos = dcc->next_pos; | |
1376 | unsigned int issued = 0; | |
1377 | bool io_interrupted = false; | |
1378 | ||
1379 | mutex_lock(&dcc->cmd_lock); | |
1380 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, | |
1381 | NULL, pos, | |
1382 | (struct rb_entry **)&prev_dc, | |
1383 | (struct rb_entry **)&next_dc, | |
4dada3fd | 1384 | &insert_p, &insert_parent, true, NULL); |
20ee4382 CY |
1385 | if (!dc) |
1386 | dc = next_dc; | |
1387 | ||
1388 | blk_start_plug(&plug); | |
1389 | ||
1390 | while (dc) { | |
1391 | struct rb_node *node; | |
6b9cb124 | 1392 | int err = 0; |
20ee4382 CY |
1393 | |
1394 | if (dc->state != D_PREP) | |
1395 | goto next; | |
1396 | ||
a7d10cf3 | 1397 | if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) { |
20ee4382 CY |
1398 | io_interrupted = true; |
1399 | break; | |
1400 | } | |
1401 | ||
1402 | dcc->next_pos = dc->lstart + dc->len; | |
6b9cb124 | 1403 | err = __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
20ee4382 | 1404 | |
35ec7d57 | 1405 | if (issued >= dpolicy->max_requests) |
20ee4382 CY |
1406 | break; |
1407 | next: | |
1408 | node = rb_next(&dc->rb_node); | |
6b9cb124 CY |
1409 | if (err) |
1410 | __remove_discard_cmd(sbi, dc); | |
20ee4382 CY |
1411 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); |
1412 | } | |
1413 | ||
1414 | blk_finish_plug(&plug); | |
1415 | ||
1416 | if (!dc) | |
1417 | dcc->next_pos = 0; | |
1418 | ||
1419 | mutex_unlock(&dcc->cmd_lock); | |
1420 | ||
1421 | if (!issued && io_interrupted) | |
1422 | issued = -1; | |
1423 | ||
1424 | return issued; | |
1425 | } | |
1426 | ||
78997b56 CY |
1427 | static int __issue_discard_cmd(struct f2fs_sb_info *sbi, |
1428 | struct discard_policy *dpolicy) | |
bd5b0738 CY |
1429 | { |
1430 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1431 | struct list_head *pend_list; | |
1432 | struct discard_cmd *dc, *tmp; | |
1433 | struct blk_plug plug; | |
522d1711 | 1434 | int i, issued = 0; |
e6c6de18 | 1435 | bool io_interrupted = false; |
bd5b0738 | 1436 | |
03f2c02d JK |
1437 | if (dpolicy->timeout != 0) |
1438 | f2fs_update_time(sbi, dpolicy->timeout); | |
1439 | ||
78997b56 | 1440 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { |
03f2c02d JK |
1441 | if (dpolicy->timeout != 0 && |
1442 | f2fs_time_over(sbi, dpolicy->timeout)) | |
1443 | break; | |
1444 | ||
78997b56 CY |
1445 | if (i + 1 < dpolicy->granularity) |
1446 | break; | |
20ee4382 CY |
1447 | |
1448 | if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered) | |
1449 | return __issue_discard_cmd_orderly(sbi, dpolicy); | |
1450 | ||
bd5b0738 | 1451 | pend_list = &dcc->pend_list[i]; |
33da62cf CY |
1452 | |
1453 | mutex_lock(&dcc->cmd_lock); | |
49c60c67 CY |
1454 | if (list_empty(pend_list)) |
1455 | goto next; | |
67fce70b CY |
1456 | if (unlikely(dcc->rbtree_check)) |
1457 | f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi, | |
1458 | &dcc->root)); | |
33da62cf | 1459 | blk_start_plug(&plug); |
bd5b0738 CY |
1460 | list_for_each_entry_safe(dc, tmp, pend_list, list) { |
1461 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1462 | ||
ecc9aa00 | 1463 | if (dpolicy->io_aware && i < dpolicy->io_aware_gran && |
a7d10cf3 | 1464 | !is_idle(sbi, DISCARD_TIME)) { |
e6c6de18 | 1465 | io_interrupted = true; |
522d1711 | 1466 | break; |
969d1b18 | 1467 | } |
e6c6de18 | 1468 | |
35ec7d57 | 1469 | __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
522d1711 | 1470 | |
35ec7d57 | 1471 | if (issued >= dpolicy->max_requests) |
33da62cf | 1472 | break; |
bd5b0738 | 1473 | } |
33da62cf | 1474 | blk_finish_plug(&plug); |
49c60c67 | 1475 | next: |
33da62cf CY |
1476 | mutex_unlock(&dcc->cmd_lock); |
1477 | ||
522d1711 | 1478 | if (issued >= dpolicy->max_requests || io_interrupted) |
33da62cf | 1479 | break; |
bd5b0738 | 1480 | } |
969d1b18 | 1481 | |
e6c6de18 CY |
1482 | if (!issued && io_interrupted) |
1483 | issued = -1; | |
1484 | ||
969d1b18 CY |
1485 | return issued; |
1486 | } | |
1487 | ||
cf5c759f | 1488 | static bool __drop_discard_cmd(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1489 | { |
1490 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1491 | struct list_head *pend_list; | |
1492 | struct discard_cmd *dc, *tmp; | |
1493 | int i; | |
cf5c759f | 1494 | bool dropped = false; |
969d1b18 CY |
1495 | |
1496 | mutex_lock(&dcc->cmd_lock); | |
1497 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { | |
1498 | pend_list = &dcc->pend_list[i]; | |
1499 | list_for_each_entry_safe(dc, tmp, pend_list, list) { | |
1500 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1501 | __remove_discard_cmd(sbi, dc); | |
cf5c759f | 1502 | dropped = true; |
969d1b18 CY |
1503 | } |
1504 | } | |
1505 | mutex_unlock(&dcc->cmd_lock); | |
cf5c759f CY |
1506 | |
1507 | return dropped; | |
bd5b0738 CY |
1508 | } |
1509 | ||
4d57b86d | 1510 | void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi) |
7950e9ac CY |
1511 | { |
1512 | __drop_discard_cmd(sbi); | |
1513 | } | |
1514 | ||
0ea80512 | 1515 | static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi, |
2a510c00 CY |
1516 | struct discard_cmd *dc) |
1517 | { | |
1518 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
0ea80512 | 1519 | unsigned int len = 0; |
2a510c00 CY |
1520 | |
1521 | wait_for_completion_io(&dc->wait); | |
1522 | mutex_lock(&dcc->cmd_lock); | |
1523 | f2fs_bug_on(sbi, dc->state != D_DONE); | |
1524 | dc->ref--; | |
0ea80512 CY |
1525 | if (!dc->ref) { |
1526 | if (!dc->error) | |
1527 | len = dc->len; | |
2a510c00 | 1528 | __remove_discard_cmd(sbi, dc); |
0ea80512 | 1529 | } |
2a510c00 | 1530 | mutex_unlock(&dcc->cmd_lock); |
0ea80512 CY |
1531 | |
1532 | return len; | |
2a510c00 CY |
1533 | } |
1534 | ||
0ea80512 | 1535 | static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi, |
78997b56 CY |
1536 | struct discard_policy *dpolicy, |
1537 | block_t start, block_t end) | |
63a94fa1 CY |
1538 | { |
1539 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 CY |
1540 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1541 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
63a94fa1 | 1542 | struct discard_cmd *dc, *tmp; |
6afae633 | 1543 | bool need_wait; |
0ea80512 | 1544 | unsigned int trimmed = 0; |
6afae633 CY |
1545 | |
1546 | next: | |
1547 | need_wait = false; | |
63a94fa1 CY |
1548 | |
1549 | mutex_lock(&dcc->cmd_lock); | |
1550 | list_for_each_entry_safe(dc, tmp, wait_list, list) { | |
8412663d CY |
1551 | if (dc->lstart + dc->len <= start || end <= dc->lstart) |
1552 | continue; | |
78997b56 | 1553 | if (dc->len < dpolicy->granularity) |
8412663d | 1554 | continue; |
78997b56 | 1555 | if (dc->state == D_DONE && !dc->ref) { |
63a94fa1 | 1556 | wait_for_completion_io(&dc->wait); |
0ea80512 CY |
1557 | if (!dc->error) |
1558 | trimmed += dc->len; | |
63a94fa1 | 1559 | __remove_discard_cmd(sbi, dc); |
6afae633 CY |
1560 | } else { |
1561 | dc->ref++; | |
1562 | need_wait = true; | |
1563 | break; | |
63a94fa1 CY |
1564 | } |
1565 | } | |
1566 | mutex_unlock(&dcc->cmd_lock); | |
6afae633 CY |
1567 | |
1568 | if (need_wait) { | |
0ea80512 | 1569 | trimmed += __wait_one_discard_bio(sbi, dc); |
6afae633 CY |
1570 | goto next; |
1571 | } | |
0ea80512 CY |
1572 | |
1573 | return trimmed; | |
63a94fa1 CY |
1574 | } |
1575 | ||
01f9cf6d | 1576 | static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi, |
78997b56 | 1577 | struct discard_policy *dpolicy) |
8412663d | 1578 | { |
9a997188 | 1579 | struct discard_policy dp; |
01f9cf6d | 1580 | unsigned int discard_blks; |
9a997188 | 1581 | |
01f9cf6d CY |
1582 | if (dpolicy) |
1583 | return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX); | |
9a997188 JK |
1584 | |
1585 | /* wait all */ | |
8bb4f253 | 1586 | __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1); |
01f9cf6d | 1587 | discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX); |
8bb4f253 | 1588 | __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1); |
01f9cf6d CY |
1589 | discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX); |
1590 | ||
1591 | return discard_blks; | |
8412663d CY |
1592 | } |
1593 | ||
004b6862 | 1594 | /* This should be covered by global mutex, &sit_i->sentry_lock */ |
94b1e10e | 1595 | static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) |
004b6862 CY |
1596 | { |
1597 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1598 | struct discard_cmd *dc; | |
ec9895ad | 1599 | bool need_wait = false; |
004b6862 CY |
1600 | |
1601 | mutex_lock(&dcc->cmd_lock); | |
4d57b86d CY |
1602 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root, |
1603 | NULL, blkaddr); | |
004b6862 | 1604 | if (dc) { |
ec9895ad CY |
1605 | if (dc->state == D_PREP) { |
1606 | __punch_discard_cmd(sbi, dc, blkaddr); | |
1607 | } else { | |
1608 | dc->ref++; | |
1609 | need_wait = true; | |
1610 | } | |
275b66b0 | 1611 | } |
d431413f | 1612 | mutex_unlock(&dcc->cmd_lock); |
ec9895ad | 1613 | |
2a510c00 CY |
1614 | if (need_wait) |
1615 | __wait_one_discard_bio(sbi, dc); | |
d431413f CY |
1616 | } |
1617 | ||
4d57b86d | 1618 | void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi) |
cce13252 CY |
1619 | { |
1620 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1621 | ||
1622 | if (dcc && dcc->f2fs_issue_discard) { | |
1623 | struct task_struct *discard_thread = dcc->f2fs_issue_discard; | |
1624 | ||
1625 | dcc->f2fs_issue_discard = NULL; | |
1626 | kthread_stop(discard_thread); | |
ec9895ad | 1627 | } |
d431413f CY |
1628 | } |
1629 | ||
8412663d | 1630 | /* This comes from f2fs_put_super */ |
03f2c02d | 1631 | bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1632 | { |
1633 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 | 1634 | struct discard_policy dpolicy; |
cf5c759f | 1635 | bool dropped; |
969d1b18 | 1636 | |
8bb4f253 JK |
1637 | __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT, |
1638 | dcc->discard_granularity); | |
03f2c02d | 1639 | dpolicy.timeout = UMOUNT_DISCARD_TIMEOUT; |
78997b56 | 1640 | __issue_discard_cmd(sbi, &dpolicy); |
cf5c759f | 1641 | dropped = __drop_discard_cmd(sbi); |
cf5c759f | 1642 | |
9a997188 JK |
1643 | /* just to make sure there is no pending discard commands */ |
1644 | __wait_all_discard_cmd(sbi, NULL); | |
2482c432 CY |
1645 | |
1646 | f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt)); | |
cf5c759f | 1647 | return dropped; |
969d1b18 CY |
1648 | } |
1649 | ||
15469963 JK |
1650 | static int issue_discard_thread(void *data) |
1651 | { | |
1652 | struct f2fs_sb_info *sbi = data; | |
1653 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1654 | wait_queue_head_t *q = &dcc->discard_wait_queue; | |
78997b56 | 1655 | struct discard_policy dpolicy; |
969d1b18 CY |
1656 | unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME; |
1657 | int issued; | |
15469963 | 1658 | |
1d7be270 | 1659 | set_freezable(); |
15469963 | 1660 | |
1d7be270 | 1661 | do { |
8bb4f253 | 1662 | __init_discard_policy(sbi, &dpolicy, DPOLICY_BG, |
78997b56 CY |
1663 | dcc->discard_granularity); |
1664 | ||
969d1b18 CY |
1665 | wait_event_interruptible_timeout(*q, |
1666 | kthread_should_stop() || freezing(current) || | |
1667 | dcc->discard_wake, | |
1668 | msecs_to_jiffies(wait_ms)); | |
35a9a766 SY |
1669 | |
1670 | if (dcc->discard_wake) | |
1671 | dcc->discard_wake = 0; | |
1672 | ||
76c7bfb3 JK |
1673 | /* clean up pending candidates before going to sleep */ |
1674 | if (atomic_read(&dcc->queued_discard)) | |
1675 | __wait_all_discard_cmd(sbi, NULL); | |
1676 | ||
1d7be270 JK |
1677 | if (try_to_freeze()) |
1678 | continue; | |
3b60d802 CY |
1679 | if (f2fs_readonly(sbi->sb)) |
1680 | continue; | |
1d7be270 JK |
1681 | if (kthread_should_stop()) |
1682 | return 0; | |
d6184774 YH |
1683 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
1684 | wait_ms = dpolicy.max_interval; | |
1685 | continue; | |
1686 | } | |
15469963 | 1687 | |
5b0e9539 | 1688 | if (sbi->gc_mode == GC_URGENT) |
8bb4f253 | 1689 | __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1); |
969d1b18 | 1690 | |
dc6febb6 CY |
1691 | sb_start_intwrite(sbi->sb); |
1692 | ||
78997b56 | 1693 | issued = __issue_discard_cmd(sbi, &dpolicy); |
f9d1dced | 1694 | if (issued > 0) { |
78997b56 CY |
1695 | __wait_all_discard_cmd(sbi, &dpolicy); |
1696 | wait_ms = dpolicy.min_interval; | |
f9d1dced | 1697 | } else if (issued == -1){ |
a7d10cf3 ST |
1698 | wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME); |
1699 | if (!wait_ms) | |
abde73c7 | 1700 | wait_ms = dpolicy.mid_interval; |
969d1b18 | 1701 | } else { |
78997b56 | 1702 | wait_ms = dpolicy.max_interval; |
969d1b18 | 1703 | } |
1d7be270 | 1704 | |
dc6febb6 | 1705 | sb_end_intwrite(sbi->sb); |
1d7be270 | 1706 | |
1d7be270 JK |
1707 | } while (!kthread_should_stop()); |
1708 | return 0; | |
15469963 JK |
1709 | } |
1710 | ||
f46e8809 | 1711 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 JK |
1712 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
1713 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
f46e8809 | 1714 | { |
92592285 | 1715 | sector_t sector, nr_sects; |
10a875f8 | 1716 | block_t lblkstart = blkstart; |
3c62be17 JK |
1717 | int devi = 0; |
1718 | ||
1719 | if (sbi->s_ndevs) { | |
1720 | devi = f2fs_target_device_index(sbi, blkstart); | |
1721 | blkstart -= FDEV(devi).start_blk; | |
1722 | } | |
f46e8809 DLM |
1723 | |
1724 | /* | |
1725 | * We need to know the type of the zone: for conventional zones, | |
1726 | * use regular discard if the drive supports it. For sequential | |
1727 | * zones, reset the zone write pointer. | |
1728 | */ | |
3c62be17 | 1729 | switch (get_blkz_type(sbi, bdev, blkstart)) { |
f46e8809 DLM |
1730 | |
1731 | case BLK_ZONE_TYPE_CONVENTIONAL: | |
1732 | if (!blk_queue_discard(bdev_get_queue(bdev))) | |
1733 | return 0; | |
c81abe34 | 1734 | return __queue_discard_cmd(sbi, bdev, lblkstart, blklen); |
f46e8809 DLM |
1735 | case BLK_ZONE_TYPE_SEQWRITE_REQ: |
1736 | case BLK_ZONE_TYPE_SEQWRITE_PREF: | |
92592285 JK |
1737 | sector = SECTOR_FROM_BLOCK(blkstart); |
1738 | nr_sects = SECTOR_FROM_BLOCK(blklen); | |
1739 | ||
1740 | if (sector & (bdev_zone_sectors(bdev) - 1) || | |
1741 | nr_sects != bdev_zone_sectors(bdev)) { | |
1742 | f2fs_msg(sbi->sb, KERN_INFO, | |
1743 | "(%d) %s: Unaligned discard attempted (block %x + %x)", | |
1744 | devi, sbi->s_ndevs ? FDEV(devi).path: "", | |
1745 | blkstart, blklen); | |
1746 | return -EIO; | |
1747 | } | |
d50aaeec | 1748 | trace_f2fs_issue_reset_zone(bdev, blkstart); |
f46e8809 DLM |
1749 | return blkdev_reset_zones(bdev, sector, |
1750 | nr_sects, GFP_NOFS); | |
1751 | default: | |
1752 | /* Unknown zone type: broken device ? */ | |
1753 | return -EIO; | |
1754 | } | |
1755 | } | |
1756 | #endif | |
1757 | ||
3c62be17 JK |
1758 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
1759 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1760 | { | |
1761 | #ifdef CONFIG_BLK_DEV_ZONED | |
7beb01f7 | 1762 | if (f2fs_sb_has_blkzoned(sbi) && |
3c62be17 JK |
1763 | bdev_zoned_model(bdev) != BLK_ZONED_NONE) |
1764 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); | |
1765 | #endif | |
c81abe34 | 1766 | return __queue_discard_cmd(sbi, bdev, blkstart, blklen); |
3c62be17 JK |
1767 | } |
1768 | ||
1e87a78d | 1769 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
1770 | block_t blkstart, block_t blklen) |
1771 | { | |
3c62be17 JK |
1772 | sector_t start = blkstart, len = 0; |
1773 | struct block_device *bdev; | |
a66cdd98 JK |
1774 | struct seg_entry *se; |
1775 | unsigned int offset; | |
1776 | block_t i; | |
3c62be17 JK |
1777 | int err = 0; |
1778 | ||
1779 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
1780 | ||
1781 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
1782 | if (i != start) { | |
1783 | struct block_device *bdev2 = | |
1784 | f2fs_target_device(sbi, i, NULL); | |
1785 | ||
1786 | if (bdev2 != bdev) { | |
1787 | err = __issue_discard_async(sbi, bdev, | |
1788 | start, len); | |
1789 | if (err) | |
1790 | return err; | |
1791 | bdev = bdev2; | |
1792 | start = i; | |
1793 | len = 0; | |
1794 | } | |
1795 | } | |
a66cdd98 | 1796 | |
a66cdd98 JK |
1797 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
1798 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
1799 | ||
1800 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
1801 | sbi->discard_blks--; | |
1802 | } | |
f46e8809 | 1803 | |
3c62be17 JK |
1804 | if (len) |
1805 | err = __issue_discard_async(sbi, bdev, start, len); | |
1806 | return err; | |
1e87a78d JK |
1807 | } |
1808 | ||
25290fa5 JK |
1809 | static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc, |
1810 | bool check_only) | |
adf4983b | 1811 | { |
b2955550 JK |
1812 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
1813 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 1814 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
1815 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
1816 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 1817 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 1818 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 1819 | unsigned int start = 0, end = -1; |
c473f1a9 | 1820 | bool force = (cpc->reason & CP_DISCARD); |
a7eeb823 | 1821 | struct discard_entry *de = NULL; |
46f84c2c | 1822 | struct list_head *head = &SM_I(sbi)->dcc_info->entry_list; |
b2955550 JK |
1823 | int i; |
1824 | ||
7d20c8ab | 1825 | if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi)) |
25290fa5 | 1826 | return false; |
b2955550 | 1827 | |
a66cdd98 | 1828 | if (!force) { |
7d20c8ab | 1829 | if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks || |
0b54fb84 JK |
1830 | SM_I(sbi)->dcc_info->nr_discards >= |
1831 | SM_I(sbi)->dcc_info->max_discards) | |
25290fa5 | 1832 | return false; |
4b2fecc8 JK |
1833 | } |
1834 | ||
b2955550 JK |
1835 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
1836 | for (i = 0; i < entries; i++) | |
a66cdd98 | 1837 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 1838 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 1839 | |
0b54fb84 JK |
1840 | while (force || SM_I(sbi)->dcc_info->nr_discards <= |
1841 | SM_I(sbi)->dcc_info->max_discards) { | |
b2955550 JK |
1842 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
1843 | if (start >= max_blocks) | |
1844 | break; | |
1845 | ||
1846 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c7b41e16 YH |
1847 | if (force && start && end != max_blocks |
1848 | && (end - start) < cpc->trim_minlen) | |
1849 | continue; | |
1850 | ||
25290fa5 JK |
1851 | if (check_only) |
1852 | return true; | |
1853 | ||
a7eeb823 CY |
1854 | if (!de) { |
1855 | de = f2fs_kmem_cache_alloc(discard_entry_slab, | |
1856 | GFP_F2FS_ZERO); | |
1857 | de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start); | |
1858 | list_add_tail(&de->list, head); | |
1859 | } | |
1860 | ||
1861 | for (i = start; i < end; i++) | |
1862 | __set_bit_le(i, (void *)de->discard_map); | |
1863 | ||
1864 | SM_I(sbi)->dcc_info->nr_discards += end - start; | |
b2955550 | 1865 | } |
25290fa5 | 1866 | return false; |
b2955550 JK |
1867 | } |
1868 | ||
af8ff65b CY |
1869 | static void release_discard_addr(struct discard_entry *entry) |
1870 | { | |
1871 | list_del(&entry->list); | |
1872 | kmem_cache_free(discard_entry_slab, entry); | |
1873 | } | |
1874 | ||
4d57b86d | 1875 | void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi) |
4b2fecc8 | 1876 | { |
46f84c2c | 1877 | struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list); |
4b2fecc8 JK |
1878 | struct discard_entry *entry, *this; |
1879 | ||
1880 | /* drop caches */ | |
af8ff65b CY |
1881 | list_for_each_entry_safe(entry, this, head, list) |
1882 | release_discard_addr(entry); | |
4b2fecc8 JK |
1883 | } |
1884 | ||
0a8165d7 | 1885 | /* |
4d57b86d | 1886 | * Should call f2fs_clear_prefree_segments after checkpoint is done. |
351df4b2 JK |
1887 | */ |
1888 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
1889 | { | |
1890 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 1891 | unsigned int segno; |
351df4b2 JK |
1892 | |
1893 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 1894 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 1895 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
1896 | mutex_unlock(&dirty_i->seglist_lock); |
1897 | } | |
1898 | ||
4d57b86d CY |
1899 | void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi, |
1900 | struct cp_control *cpc) | |
351df4b2 | 1901 | { |
969d1b18 CY |
1902 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
1903 | struct list_head *head = &dcc->entry_list; | |
2d7b822a | 1904 | struct discard_entry *entry, *this; |
351df4b2 | 1905 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 1906 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 1907 | unsigned int start = 0, end = -1; |
36abef4e | 1908 | unsigned int secno, start_segno; |
c473f1a9 | 1909 | bool force = (cpc->reason & CP_DISCARD); |
2c70c5e3 | 1910 | bool need_align = test_opt(sbi, LFS) && __is_large_section(sbi); |
351df4b2 JK |
1911 | |
1912 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 1913 | |
351df4b2 | 1914 | while (1) { |
29e59c14 | 1915 | int i; |
ad6672bb YS |
1916 | |
1917 | if (need_align && end != -1) | |
1918 | end--; | |
7cd8558b JK |
1919 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
1920 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 1921 | break; |
7cd8558b JK |
1922 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
1923 | start + 1); | |
29e59c14 | 1924 | |
ad6672bb YS |
1925 | if (need_align) { |
1926 | start = rounddown(start, sbi->segs_per_sec); | |
1927 | end = roundup(end, sbi->segs_per_sec); | |
1928 | } | |
29e59c14 | 1929 | |
ad6672bb YS |
1930 | for (i = start; i < end; i++) { |
1931 | if (test_and_clear_bit(i, prefree_map)) | |
1932 | dirty_i->nr_dirty[PRE]--; | |
1933 | } | |
29e59c14 | 1934 | |
7d20c8ab | 1935 | if (!f2fs_realtime_discard_enable(sbi)) |
29e59c14 | 1936 | continue; |
351df4b2 | 1937 | |
650d3c4e YH |
1938 | if (force && start >= cpc->trim_start && |
1939 | (end - 1) <= cpc->trim_end) | |
1940 | continue; | |
1941 | ||
2c70c5e3 | 1942 | if (!test_opt(sbi, LFS) || !__is_large_section(sbi)) { |
36abef4e | 1943 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
37208879 | 1944 | (end - start) << sbi->log_blocks_per_seg); |
36abef4e JK |
1945 | continue; |
1946 | } | |
1947 | next: | |
4ddb1a4d JK |
1948 | secno = GET_SEC_FROM_SEG(sbi, start); |
1949 | start_segno = GET_SEG_FROM_SEC(sbi, secno); | |
36abef4e | 1950 | if (!IS_CURSEC(sbi, secno) && |
302bd348 | 1951 | !get_valid_blocks(sbi, start, true)) |
36abef4e JK |
1952 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), |
1953 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
1954 | ||
1955 | start = start_segno + sbi->segs_per_sec; | |
1956 | if (start < end) | |
1957 | goto next; | |
8b107f5b JK |
1958 | else |
1959 | end = start - 1; | |
351df4b2 JK |
1960 | } |
1961 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
1962 | |
1963 | /* send small discards */ | |
2d7b822a | 1964 | list_for_each_entry_safe(entry, this, head, list) { |
a7eeb823 CY |
1965 | unsigned int cur_pos = 0, next_pos, len, total_len = 0; |
1966 | bool is_valid = test_bit_le(0, entry->discard_map); | |
1967 | ||
1968 | find_next: | |
1969 | if (is_valid) { | |
1970 | next_pos = find_next_zero_bit_le(entry->discard_map, | |
1971 | sbi->blocks_per_seg, cur_pos); | |
1972 | len = next_pos - cur_pos; | |
1973 | ||
7beb01f7 | 1974 | if (f2fs_sb_has_blkzoned(sbi) || |
acfd2810 | 1975 | (force && len < cpc->trim_minlen)) |
a7eeb823 CY |
1976 | goto skip; |
1977 | ||
1978 | f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, | |
1979 | len); | |
a7eeb823 CY |
1980 | total_len += len; |
1981 | } else { | |
1982 | next_pos = find_next_bit_le(entry->discard_map, | |
1983 | sbi->blocks_per_seg, cur_pos); | |
1984 | } | |
836b5a63 | 1985 | skip: |
a7eeb823 CY |
1986 | cur_pos = next_pos; |
1987 | is_valid = !is_valid; | |
1988 | ||
1989 | if (cur_pos < sbi->blocks_per_seg) | |
1990 | goto find_next; | |
1991 | ||
af8ff65b | 1992 | release_discard_addr(entry); |
969d1b18 | 1993 | dcc->nr_discards -= total_len; |
b2955550 | 1994 | } |
34e159da | 1995 | |
01983c71 | 1996 | wake_up_discard_thread(sbi, false); |
351df4b2 JK |
1997 | } |
1998 | ||
8ed59745 | 1999 | static int create_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 | 2000 | { |
15469963 | 2001 | dev_t dev = sbi->sb->s_bdev->bd_dev; |
0b54fb84 | 2002 | struct discard_cmd_control *dcc; |
ba48a33e | 2003 | int err = 0, i; |
0b54fb84 JK |
2004 | |
2005 | if (SM_I(sbi)->dcc_info) { | |
2006 | dcc = SM_I(sbi)->dcc_info; | |
2007 | goto init_thread; | |
2008 | } | |
2009 | ||
acbf054d | 2010 | dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL); |
0b54fb84 JK |
2011 | if (!dcc) |
2012 | return -ENOMEM; | |
2013 | ||
969d1b18 | 2014 | dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY; |
46f84c2c | 2015 | INIT_LIST_HEAD(&dcc->entry_list); |
78997b56 | 2016 | for (i = 0; i < MAX_PLIST_NUM; i++) |
ba48a33e | 2017 | INIT_LIST_HEAD(&dcc->pend_list[i]); |
46f84c2c | 2018 | INIT_LIST_HEAD(&dcc->wait_list); |
8412663d | 2019 | INIT_LIST_HEAD(&dcc->fstrim_list); |
15469963 | 2020 | mutex_init(&dcc->cmd_lock); |
8b8dd65f | 2021 | atomic_set(&dcc->issued_discard, 0); |
72691af6 | 2022 | atomic_set(&dcc->queued_discard, 0); |
5f32366a | 2023 | atomic_set(&dcc->discard_cmd_cnt, 0); |
0b54fb84 | 2024 | dcc->nr_discards = 0; |
d618ebaf | 2025 | dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg; |
d84d1cbd | 2026 | dcc->undiscard_blks = 0; |
20ee4382 | 2027 | dcc->next_pos = 0; |
4dada3fd | 2028 | dcc->root = RB_ROOT_CACHED; |
67fce70b | 2029 | dcc->rbtree_check = false; |
0b54fb84 | 2030 | |
15469963 | 2031 | init_waitqueue_head(&dcc->discard_wait_queue); |
0b54fb84 JK |
2032 | SM_I(sbi)->dcc_info = dcc; |
2033 | init_thread: | |
15469963 JK |
2034 | dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi, |
2035 | "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev)); | |
2036 | if (IS_ERR(dcc->f2fs_issue_discard)) { | |
2037 | err = PTR_ERR(dcc->f2fs_issue_discard); | |
5222595d | 2038 | kvfree(dcc); |
15469963 JK |
2039 | SM_I(sbi)->dcc_info = NULL; |
2040 | return err; | |
2041 | } | |
2042 | ||
0b54fb84 JK |
2043 | return err; |
2044 | } | |
2045 | ||
f099405f | 2046 | static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 JK |
2047 | { |
2048 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
2049 | ||
f099405f CY |
2050 | if (!dcc) |
2051 | return; | |
2052 | ||
4d57b86d | 2053 | f2fs_stop_discard_thread(sbi); |
f099405f | 2054 | |
5222595d | 2055 | kvfree(dcc); |
f099405f | 2056 | SM_I(sbi)->dcc_info = NULL; |
0b54fb84 JK |
2057 | } |
2058 | ||
184a5cd2 | 2059 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
2060 | { |
2061 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
2062 | |
2063 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 2064 | sit_i->dirty_sentries++; |
184a5cd2 CY |
2065 | return false; |
2066 | } | |
2067 | ||
2068 | return true; | |
351df4b2 JK |
2069 | } |
2070 | ||
2071 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
2072 | unsigned int segno, int modified) | |
2073 | { | |
2074 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
2075 | se->type = type; | |
2076 | if (modified) | |
2077 | __mark_sit_entry_dirty(sbi, segno); | |
2078 | } | |
2079 | ||
2080 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
2081 | { | |
2082 | struct seg_entry *se; | |
2083 | unsigned int segno, offset; | |
2084 | long int new_vblocks; | |
6415fedc YS |
2085 | bool exist; |
2086 | #ifdef CONFIG_F2FS_CHECK_FS | |
2087 | bool mir_exist; | |
2088 | #endif | |
351df4b2 JK |
2089 | |
2090 | segno = GET_SEGNO(sbi, blkaddr); | |
2091 | ||
2092 | se = get_seg_entry(sbi, segno); | |
2093 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 2094 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 2095 | |
9850cf4a | 2096 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
2097 | (new_vblocks > sbi->blocks_per_seg))); |
2098 | ||
2099 | se->valid_blocks = new_vblocks; | |
a1f72ac2 CY |
2100 | se->mtime = get_mtime(sbi, false); |
2101 | if (se->mtime > SIT_I(sbi)->max_mtime) | |
2102 | SIT_I(sbi)->max_mtime = se->mtime; | |
351df4b2 JK |
2103 | |
2104 | /* Update valid block bitmap */ | |
2105 | if (del > 0) { | |
6415fedc | 2106 | exist = f2fs_test_and_set_bit(offset, se->cur_valid_map); |
355e7891 | 2107 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
2108 | mir_exist = f2fs_test_and_set_bit(offset, |
2109 | se->cur_valid_map_mir); | |
2110 | if (unlikely(exist != mir_exist)) { | |
2111 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
2112 | "when setting bitmap, blk:%u, old bit:%d", | |
2113 | blkaddr, exist); | |
05796763 | 2114 | f2fs_bug_on(sbi, 1); |
6415fedc | 2115 | } |
355e7891 | 2116 | #endif |
6415fedc YS |
2117 | if (unlikely(exist)) { |
2118 | f2fs_msg(sbi->sb, KERN_ERR, | |
2119 | "Bitmap was wrongly set, blk:%u", blkaddr); | |
2120 | f2fs_bug_on(sbi, 1); | |
35ee82ca YS |
2121 | se->valid_blocks--; |
2122 | del = 0; | |
355e7891 | 2123 | } |
6415fedc | 2124 | |
7d20c8ab | 2125 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
a66cdd98 | 2126 | sbi->discard_blks--; |
720037f9 JK |
2127 | |
2128 | /* don't overwrite by SSR to keep node chain */ | |
4354994f DR |
2129 | if (IS_NODESEG(se->type) && |
2130 | !is_sbi_flag_set(sbi, SBI_CP_DISABLED)) { | |
720037f9 JK |
2131 | if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map)) |
2132 | se->ckpt_valid_blocks++; | |
2133 | } | |
351df4b2 | 2134 | } else { |
6415fedc | 2135 | exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map); |
355e7891 | 2136 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
2137 | mir_exist = f2fs_test_and_clear_bit(offset, |
2138 | se->cur_valid_map_mir); | |
2139 | if (unlikely(exist != mir_exist)) { | |
2140 | f2fs_msg(sbi->sb, KERN_ERR, "Inconsistent error " | |
2141 | "when clearing bitmap, blk:%u, old bit:%d", | |
2142 | blkaddr, exist); | |
05796763 | 2143 | f2fs_bug_on(sbi, 1); |
6415fedc | 2144 | } |
355e7891 | 2145 | #endif |
6415fedc YS |
2146 | if (unlikely(!exist)) { |
2147 | f2fs_msg(sbi->sb, KERN_ERR, | |
2148 | "Bitmap was wrongly cleared, blk:%u", blkaddr); | |
2149 | f2fs_bug_on(sbi, 1); | |
35ee82ca YS |
2150 | se->valid_blocks++; |
2151 | del = 0; | |
4354994f DR |
2152 | } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
2153 | /* | |
2154 | * If checkpoints are off, we must not reuse data that | |
2155 | * was used in the previous checkpoint. If it was used | |
2156 | * before, we must track that to know how much space we | |
2157 | * really have. | |
2158 | */ | |
2159 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2160 | sbi->unusable_block_count++; | |
355e7891 | 2161 | } |
6415fedc | 2162 | |
7d20c8ab | 2163 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
a66cdd98 | 2164 | sbi->discard_blks++; |
351df4b2 JK |
2165 | } |
2166 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2167 | se->ckpt_valid_blocks += del; | |
2168 | ||
2169 | __mark_sit_entry_dirty(sbi, segno); | |
2170 | ||
2171 | /* update total number of valid blocks to be written in ckpt area */ | |
2172 | SIT_I(sbi)->written_valid_blocks += del; | |
2173 | ||
2c70c5e3 | 2174 | if (__is_large_section(sbi)) |
351df4b2 JK |
2175 | get_sec_entry(sbi, segno)->valid_blocks += del; |
2176 | } | |
2177 | ||
4d57b86d | 2178 | void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) |
351df4b2 JK |
2179 | { |
2180 | unsigned int segno = GET_SEGNO(sbi, addr); | |
2181 | struct sit_info *sit_i = SIT_I(sbi); | |
2182 | ||
9850cf4a | 2183 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
351df4b2 JK |
2184 | if (addr == NEW_ADDR) |
2185 | return; | |
2186 | ||
6aa58d8a CY |
2187 | invalidate_mapping_pages(META_MAPPING(sbi), addr, addr); |
2188 | ||
351df4b2 | 2189 | /* add it into sit main buffer */ |
3d26fa6b | 2190 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2191 | |
2192 | update_sit_entry(sbi, addr, -1); | |
2193 | ||
2194 | /* add it into dirty seglist */ | |
2195 | locate_dirty_segment(sbi, segno); | |
2196 | ||
3d26fa6b | 2197 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
2198 | } |
2199 | ||
4d57b86d | 2200 | bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
6e2c64ad JK |
2201 | { |
2202 | struct sit_info *sit_i = SIT_I(sbi); | |
2203 | unsigned int segno, offset; | |
2204 | struct seg_entry *se; | |
2205 | bool is_cp = false; | |
2206 | ||
e1da7872 | 2207 | if (!is_valid_data_blkaddr(sbi, blkaddr)) |
6e2c64ad JK |
2208 | return true; |
2209 | ||
3d26fa6b | 2210 | down_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2211 | |
2212 | segno = GET_SEGNO(sbi, blkaddr); | |
2213 | se = get_seg_entry(sbi, segno); | |
2214 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
2215 | ||
2216 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2217 | is_cp = true; | |
2218 | ||
3d26fa6b | 2219 | up_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2220 | |
2221 | return is_cp; | |
2222 | } | |
2223 | ||
0a8165d7 | 2224 | /* |
351df4b2 JK |
2225 | * This function should be resided under the curseg_mutex lock |
2226 | */ | |
2227 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 2228 | struct f2fs_summary *sum) |
351df4b2 JK |
2229 | { |
2230 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2231 | void *addr = curseg->sum_blk; | |
e79efe3b | 2232 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 2233 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
2234 | } |
2235 | ||
0a8165d7 | 2236 | /* |
351df4b2 JK |
2237 | * Calculate the number of current summary pages for writing |
2238 | */ | |
4d57b86d | 2239 | int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 2240 | { |
351df4b2 | 2241 | int valid_sum_count = 0; |
9a47938b | 2242 | int i, sum_in_page; |
351df4b2 JK |
2243 | |
2244 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2245 | if (sbi->ckpt->alloc_type[i] == SSR) | |
2246 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
2247 | else { |
2248 | if (for_ra) | |
2249 | valid_sum_count += le16_to_cpu( | |
2250 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
2251 | else | |
2252 | valid_sum_count += curseg_blkoff(sbi, i); | |
2253 | } | |
351df4b2 JK |
2254 | } |
2255 | ||
09cbfeaf | 2256 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
2257 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
2258 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 2259 | return 1; |
9a47938b | 2260 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 2261 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
2262 | return 2; |
2263 | return 3; | |
2264 | } | |
2265 | ||
0a8165d7 | 2266 | /* |
351df4b2 JK |
2267 | * Caller should put this summary page |
2268 | */ | |
4d57b86d | 2269 | struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 | 2270 | { |
7735730d | 2271 | return f2fs_get_meta_page_nofail(sbi, GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2272 | } |
2273 | ||
4d57b86d CY |
2274 | void f2fs_update_meta_page(struct f2fs_sb_info *sbi, |
2275 | void *src, block_t blk_addr) | |
351df4b2 | 2276 | { |
4d57b86d | 2277 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
381722d2 | 2278 | |
0537b811 | 2279 | memcpy(page_address(page), src, PAGE_SIZE); |
351df4b2 JK |
2280 | set_page_dirty(page); |
2281 | f2fs_put_page(page, 1); | |
2282 | } | |
2283 | ||
381722d2 CY |
2284 | static void write_sum_page(struct f2fs_sb_info *sbi, |
2285 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
2286 | { | |
4d57b86d | 2287 | f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr); |
381722d2 CY |
2288 | } |
2289 | ||
b7ad7512 CY |
2290 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
2291 | int type, block_t blk_addr) | |
2292 | { | |
2293 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
4d57b86d | 2294 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
b7ad7512 CY |
2295 | struct f2fs_summary_block *src = curseg->sum_blk; |
2296 | struct f2fs_summary_block *dst; | |
2297 | ||
2298 | dst = (struct f2fs_summary_block *)page_address(page); | |
81114baa | 2299 | memset(dst, 0, PAGE_SIZE); |
b7ad7512 CY |
2300 | |
2301 | mutex_lock(&curseg->curseg_mutex); | |
2302 | ||
2303 | down_read(&curseg->journal_rwsem); | |
2304 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
2305 | up_read(&curseg->journal_rwsem); | |
2306 | ||
2307 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
2308 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
2309 | ||
2310 | mutex_unlock(&curseg->curseg_mutex); | |
2311 | ||
2312 | set_page_dirty(page); | |
2313 | f2fs_put_page(page, 1); | |
2314 | } | |
2315 | ||
a7881893 JK |
2316 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
2317 | { | |
2318 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2319 | unsigned int segno = curseg->segno + 1; | |
2320 | struct free_segmap_info *free_i = FREE_I(sbi); | |
2321 | ||
2322 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) | |
2323 | return !test_bit(segno, free_i->free_segmap); | |
2324 | return 0; | |
2325 | } | |
2326 | ||
0a8165d7 | 2327 | /* |
351df4b2 JK |
2328 | * Find a new segment from the free segments bitmap to right order |
2329 | * This function should be returned with success, otherwise BUG | |
2330 | */ | |
2331 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
2332 | unsigned int *newseg, bool new_sec, int dir) | |
2333 | { | |
2334 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 2335 | unsigned int segno, secno, zoneno; |
7cd8558b | 2336 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
4ddb1a4d JK |
2337 | unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg); |
2338 | unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg); | |
351df4b2 JK |
2339 | unsigned int left_start = hint; |
2340 | bool init = true; | |
2341 | int go_left = 0; | |
2342 | int i; | |
2343 | ||
1a118ccf | 2344 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
2345 | |
2346 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
2347 | segno = find_next_zero_bit(free_i->free_segmap, | |
4ddb1a4d JK |
2348 | GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1); |
2349 | if (segno < GET_SEG_FROM_SEC(sbi, hint + 1)) | |
351df4b2 JK |
2350 | goto got_it; |
2351 | } | |
2352 | find_other_zone: | |
7cd8558b JK |
2353 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
2354 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
2355 | if (dir == ALLOC_RIGHT) { |
2356 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2357 | MAIN_SECS(sbi), 0); |
2358 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2359 | } else { |
2360 | go_left = 1; | |
2361 | left_start = hint - 1; | |
2362 | } | |
2363 | } | |
2364 | if (go_left == 0) | |
2365 | goto skip_left; | |
2366 | ||
2367 | while (test_bit(left_start, free_i->free_secmap)) { | |
2368 | if (left_start > 0) { | |
2369 | left_start--; | |
2370 | continue; | |
2371 | } | |
2372 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2373 | MAIN_SECS(sbi), 0); |
2374 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2375 | break; |
2376 | } | |
2377 | secno = left_start; | |
2378 | skip_left: | |
4ddb1a4d JK |
2379 | segno = GET_SEG_FROM_SEC(sbi, secno); |
2380 | zoneno = GET_ZONE_FROM_SEC(sbi, secno); | |
351df4b2 JK |
2381 | |
2382 | /* give up on finding another zone */ | |
2383 | if (!init) | |
2384 | goto got_it; | |
2385 | if (sbi->secs_per_zone == 1) | |
2386 | goto got_it; | |
2387 | if (zoneno == old_zoneno) | |
2388 | goto got_it; | |
2389 | if (dir == ALLOC_LEFT) { | |
2390 | if (!go_left && zoneno + 1 >= total_zones) | |
2391 | goto got_it; | |
2392 | if (go_left && zoneno == 0) | |
2393 | goto got_it; | |
2394 | } | |
2395 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2396 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
2397 | break; | |
2398 | ||
2399 | if (i < NR_CURSEG_TYPE) { | |
2400 | /* zone is in user, try another */ | |
2401 | if (go_left) | |
2402 | hint = zoneno * sbi->secs_per_zone - 1; | |
2403 | else if (zoneno + 1 >= total_zones) | |
2404 | hint = 0; | |
2405 | else | |
2406 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
2407 | init = false; | |
2408 | goto find_other_zone; | |
2409 | } | |
2410 | got_it: | |
2411 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 2412 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
2413 | __set_inuse(sbi, segno); |
2414 | *newseg = segno; | |
1a118ccf | 2415 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
2416 | } |
2417 | ||
2418 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
2419 | { | |
2420 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2421 | struct summary_footer *sum_footer; | |
2422 | ||
2423 | curseg->segno = curseg->next_segno; | |
4ddb1a4d | 2424 | curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno); |
351df4b2 JK |
2425 | curseg->next_blkoff = 0; |
2426 | curseg->next_segno = NULL_SEGNO; | |
2427 | ||
2428 | sum_footer = &(curseg->sum_blk->footer); | |
2429 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
2430 | if (IS_DATASEG(type)) | |
2431 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
2432 | if (IS_NODESEG(type)) | |
2433 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
2434 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
2435 | } | |
2436 | ||
7a20b8a6 JK |
2437 | static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type) |
2438 | { | |
a7881893 | 2439 | /* if segs_per_sec is large than 1, we need to keep original policy. */ |
2c70c5e3 | 2440 | if (__is_large_section(sbi)) |
a7881893 JK |
2441 | return CURSEG_I(sbi, type)->segno; |
2442 | ||
4354994f DR |
2443 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
2444 | return 0; | |
2445 | ||
b94929d9 YS |
2446 | if (test_opt(sbi, NOHEAP) && |
2447 | (type == CURSEG_HOT_DATA || IS_NODESEG(type))) | |
7a20b8a6 JK |
2448 | return 0; |
2449 | ||
e066b83c JK |
2450 | if (SIT_I(sbi)->last_victim[ALLOC_NEXT]) |
2451 | return SIT_I(sbi)->last_victim[ALLOC_NEXT]; | |
07939627 JK |
2452 | |
2453 | /* find segments from 0 to reuse freed segments */ | |
63189b78 | 2454 | if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) |
07939627 JK |
2455 | return 0; |
2456 | ||
7a20b8a6 JK |
2457 | return CURSEG_I(sbi, type)->segno; |
2458 | } | |
2459 | ||
0a8165d7 | 2460 | /* |
351df4b2 JK |
2461 | * Allocate a current working segment. |
2462 | * This function always allocates a free segment in LFS manner. | |
2463 | */ | |
2464 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
2465 | { | |
2466 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2467 | unsigned int segno = curseg->segno; | |
2468 | int dir = ALLOC_LEFT; | |
2469 | ||
2470 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 2471 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2472 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
2473 | dir = ALLOC_RIGHT; | |
2474 | ||
2475 | if (test_opt(sbi, NOHEAP)) | |
2476 | dir = ALLOC_RIGHT; | |
2477 | ||
7a20b8a6 | 2478 | segno = __get_next_segno(sbi, type); |
351df4b2 JK |
2479 | get_new_segment(sbi, &segno, new_sec, dir); |
2480 | curseg->next_segno = segno; | |
2481 | reset_curseg(sbi, type, 1); | |
2482 | curseg->alloc_type = LFS; | |
2483 | } | |
2484 | ||
2485 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
2486 | struct curseg_info *seg, block_t start) | |
2487 | { | |
2488 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 2489 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 2490 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
2491 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
2492 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
2493 | int i, pos; | |
2494 | ||
2495 | for (i = 0; i < entries; i++) | |
2496 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
2497 | ||
2498 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
2499 | ||
2500 | seg->next_blkoff = pos; | |
351df4b2 JK |
2501 | } |
2502 | ||
0a8165d7 | 2503 | /* |
351df4b2 JK |
2504 | * If a segment is written by LFS manner, next block offset is just obtained |
2505 | * by increasing the current block offset. However, if a segment is written by | |
2506 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
2507 | */ | |
2508 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
2509 | struct curseg_info *seg) | |
2510 | { | |
2511 | if (seg->alloc_type == SSR) | |
2512 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
2513 | else | |
2514 | seg->next_blkoff++; | |
2515 | } | |
2516 | ||
0a8165d7 | 2517 | /* |
e1c42045 | 2518 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
2519 | * manner, so it should recover the existing segment information of valid blocks |
2520 | */ | |
025d63a4 | 2521 | static void change_curseg(struct f2fs_sb_info *sbi, int type) |
351df4b2 JK |
2522 | { |
2523 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2524 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2525 | unsigned int new_segno = curseg->next_segno; | |
2526 | struct f2fs_summary_block *sum_node; | |
2527 | struct page *sum_page; | |
2528 | ||
2529 | write_sum_page(sbi, curseg->sum_blk, | |
2530 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
2531 | __set_test_and_inuse(sbi, new_segno); | |
2532 | ||
2533 | mutex_lock(&dirty_i->seglist_lock); | |
2534 | __remove_dirty_segment(sbi, new_segno, PRE); | |
2535 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
2536 | mutex_unlock(&dirty_i->seglist_lock); | |
2537 | ||
2538 | reset_curseg(sbi, type, 1); | |
2539 | curseg->alloc_type = SSR; | |
2540 | __next_free_blkoff(sbi, curseg, 0); | |
2541 | ||
4d57b86d | 2542 | sum_page = f2fs_get_sum_page(sbi, new_segno); |
edc55aaf | 2543 | f2fs_bug_on(sbi, IS_ERR(sum_page)); |
025d63a4 CY |
2544 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); |
2545 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
2546 | f2fs_put_page(sum_page, 1); | |
351df4b2 JK |
2547 | } |
2548 | ||
43727527 JK |
2549 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
2550 | { | |
2551 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2552 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
e066b83c | 2553 | unsigned segno = NULL_SEGNO; |
d27c3d89 CY |
2554 | int i, cnt; |
2555 | bool reversed = false; | |
c192f7a4 | 2556 | |
4d57b86d | 2557 | /* f2fs_need_SSR() already forces to do this */ |
e066b83c JK |
2558 | if (v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) { |
2559 | curseg->next_segno = segno; | |
c192f7a4 | 2560 | return 1; |
e066b83c | 2561 | } |
43727527 | 2562 | |
70d625cb JK |
2563 | /* For node segments, let's do SSR more intensively */ |
2564 | if (IS_NODESEG(type)) { | |
d27c3d89 CY |
2565 | if (type >= CURSEG_WARM_NODE) { |
2566 | reversed = true; | |
2567 | i = CURSEG_COLD_NODE; | |
2568 | } else { | |
2569 | i = CURSEG_HOT_NODE; | |
2570 | } | |
2571 | cnt = NR_CURSEG_NODE_TYPE; | |
70d625cb | 2572 | } else { |
d27c3d89 CY |
2573 | if (type >= CURSEG_WARM_DATA) { |
2574 | reversed = true; | |
2575 | i = CURSEG_COLD_DATA; | |
2576 | } else { | |
2577 | i = CURSEG_HOT_DATA; | |
2578 | } | |
2579 | cnt = NR_CURSEG_DATA_TYPE; | |
70d625cb | 2580 | } |
43727527 | 2581 | |
d27c3d89 | 2582 | for (; cnt-- > 0; reversed ? i-- : i++) { |
c192f7a4 JK |
2583 | if (i == type) |
2584 | continue; | |
e066b83c JK |
2585 | if (v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) { |
2586 | curseg->next_segno = segno; | |
43727527 | 2587 | return 1; |
e066b83c | 2588 | } |
c192f7a4 | 2589 | } |
4354994f DR |
2590 | |
2591 | /* find valid_blocks=0 in dirty list */ | |
2592 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { | |
2593 | segno = get_free_segment(sbi); | |
2594 | if (segno != NULL_SEGNO) { | |
2595 | curseg->next_segno = segno; | |
2596 | return 1; | |
2597 | } | |
2598 | } | |
43727527 JK |
2599 | return 0; |
2600 | } | |
2601 | ||
351df4b2 JK |
2602 | /* |
2603 | * flush out current segment and replace it with new segment | |
2604 | * This function should be returned with success, otherwise BUG | |
2605 | */ | |
2606 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
2607 | int type, bool force) | |
2608 | { | |
a7881893 JK |
2609 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
2610 | ||
7b405275 | 2611 | if (force) |
351df4b2 | 2612 | new_curseg(sbi, type, true); |
5b6c6be2 JK |
2613 | else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) && |
2614 | type == CURSEG_WARM_NODE) | |
351df4b2 | 2615 | new_curseg(sbi, type, false); |
4354994f DR |
2616 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type) && |
2617 | likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED))) | |
a7881893 | 2618 | new_curseg(sbi, type, false); |
4d57b86d | 2619 | else if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type)) |
025d63a4 | 2620 | change_curseg(sbi, type); |
351df4b2 JK |
2621 | else |
2622 | new_curseg(sbi, type, false); | |
dcdfff65 | 2623 | |
a7881893 | 2624 | stat_inc_seg_type(sbi, curseg); |
351df4b2 JK |
2625 | } |
2626 | ||
4d57b86d | 2627 | void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi) |
351df4b2 | 2628 | { |
6ae1be13 JK |
2629 | struct curseg_info *curseg; |
2630 | unsigned int old_segno; | |
351df4b2 JK |
2631 | int i; |
2632 | ||
3d26fa6b CY |
2633 | down_write(&SIT_I(sbi)->sentry_lock); |
2634 | ||
6ae1be13 JK |
2635 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
2636 | curseg = CURSEG_I(sbi, i); | |
2637 | old_segno = curseg->segno; | |
2638 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
2639 | locate_dirty_segment(sbi, old_segno); | |
2640 | } | |
3d26fa6b CY |
2641 | |
2642 | up_write(&SIT_I(sbi)->sentry_lock); | |
351df4b2 JK |
2643 | } |
2644 | ||
2645 | static const struct segment_allocation default_salloc_ops = { | |
2646 | .allocate_segment = allocate_segment_by_default, | |
2647 | }; | |
2648 | ||
4d57b86d CY |
2649 | bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi, |
2650 | struct cp_control *cpc) | |
25290fa5 JK |
2651 | { |
2652 | __u64 trim_start = cpc->trim_start; | |
2653 | bool has_candidate = false; | |
2654 | ||
3d26fa6b | 2655 | down_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2656 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) { |
2657 | if (add_discard_addrs(sbi, cpc, true)) { | |
2658 | has_candidate = true; | |
2659 | break; | |
2660 | } | |
2661 | } | |
3d26fa6b | 2662 | up_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2663 | |
2664 | cpc->trim_start = trim_start; | |
2665 | return has_candidate; | |
2666 | } | |
2667 | ||
01f9cf6d | 2668 | static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi, |
9a997188 JK |
2669 | struct discard_policy *dpolicy, |
2670 | unsigned int start, unsigned int end) | |
2671 | { | |
2672 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
2673 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
2674 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
2675 | struct discard_cmd *dc; | |
2676 | struct blk_plug plug; | |
2677 | int issued; | |
01f9cf6d | 2678 | unsigned int trimmed = 0; |
9a997188 JK |
2679 | |
2680 | next: | |
2681 | issued = 0; | |
2682 | ||
2683 | mutex_lock(&dcc->cmd_lock); | |
67fce70b CY |
2684 | if (unlikely(dcc->rbtree_check)) |
2685 | f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi, | |
2686 | &dcc->root)); | |
9a997188 | 2687 | |
4d57b86d | 2688 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, |
9a997188 JK |
2689 | NULL, start, |
2690 | (struct rb_entry **)&prev_dc, | |
2691 | (struct rb_entry **)&next_dc, | |
4dada3fd | 2692 | &insert_p, &insert_parent, true, NULL); |
9a997188 JK |
2693 | if (!dc) |
2694 | dc = next_dc; | |
2695 | ||
2696 | blk_start_plug(&plug); | |
2697 | ||
2698 | while (dc && dc->lstart <= end) { | |
2699 | struct rb_node *node; | |
6b9cb124 | 2700 | int err = 0; |
9a997188 JK |
2701 | |
2702 | if (dc->len < dpolicy->granularity) | |
2703 | goto skip; | |
2704 | ||
2705 | if (dc->state != D_PREP) { | |
2706 | list_move_tail(&dc->list, &dcc->fstrim_list); | |
2707 | goto skip; | |
2708 | } | |
2709 | ||
6b9cb124 | 2710 | err = __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
9a997188 | 2711 | |
35ec7d57 | 2712 | if (issued >= dpolicy->max_requests) { |
9a997188 JK |
2713 | start = dc->lstart + dc->len; |
2714 | ||
6b9cb124 CY |
2715 | if (err) |
2716 | __remove_discard_cmd(sbi, dc); | |
2717 | ||
9a997188 JK |
2718 | blk_finish_plug(&plug); |
2719 | mutex_unlock(&dcc->cmd_lock); | |
01f9cf6d | 2720 | trimmed += __wait_all_discard_cmd(sbi, NULL); |
9a997188 JK |
2721 | congestion_wait(BLK_RW_ASYNC, HZ/50); |
2722 | goto next; | |
2723 | } | |
2724 | skip: | |
2725 | node = rb_next(&dc->rb_node); | |
6b9cb124 CY |
2726 | if (err) |
2727 | __remove_discard_cmd(sbi, dc); | |
9a997188 JK |
2728 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); |
2729 | ||
2730 | if (fatal_signal_pending(current)) | |
2731 | break; | |
2732 | } | |
2733 | ||
2734 | blk_finish_plug(&plug); | |
2735 | mutex_unlock(&dcc->cmd_lock); | |
01f9cf6d CY |
2736 | |
2737 | return trimmed; | |
9a997188 JK |
2738 | } |
2739 | ||
4b2fecc8 JK |
2740 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
2741 | { | |
f7ef9b83 JK |
2742 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
2743 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
377224c4 | 2744 | unsigned int start_segno, end_segno; |
8412663d | 2745 | block_t start_block, end_block; |
4b2fecc8 | 2746 | struct cp_control cpc; |
78997b56 | 2747 | struct discard_policy dpolicy; |
0ea80512 | 2748 | unsigned long long trimmed = 0; |
c34f42e2 | 2749 | int err = 0; |
2c70c5e3 | 2750 | bool need_align = test_opt(sbi, LFS) && __is_large_section(sbi); |
4b2fecc8 | 2751 | |
836b5a63 | 2752 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
2753 | return -EINVAL; |
2754 | ||
3f16ecd9 CY |
2755 | if (end < MAIN_BLKADDR(sbi)) |
2756 | goto out; | |
4b2fecc8 | 2757 | |
ed214a11 YH |
2758 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
2759 | f2fs_msg(sbi->sb, KERN_WARNING, | |
2760 | "Found FS corruption, run fsck to fix."); | |
3d165dc3 | 2761 | return -EIO; |
ed214a11 YH |
2762 | } |
2763 | ||
4b2fecc8 | 2764 | /* start/end segment number in main_area */ |
7cd8558b JK |
2765 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
2766 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
2767 | GET_SEGNO(sbi, end); | |
ad6672bb YS |
2768 | if (need_align) { |
2769 | start_segno = rounddown(start_segno, sbi->segs_per_sec); | |
2770 | end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1; | |
2771 | } | |
8412663d | 2772 | |
4b2fecc8 | 2773 | cpc.reason = CP_DISCARD; |
836b5a63 | 2774 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
377224c4 CY |
2775 | cpc.trim_start = start_segno; |
2776 | cpc.trim_end = end_segno; | |
4b2fecc8 | 2777 | |
377224c4 CY |
2778 | if (sbi->discard_blks == 0) |
2779 | goto out; | |
74fa5f3d | 2780 | |
377224c4 | 2781 | mutex_lock(&sbi->gc_mutex); |
4d57b86d | 2782 | err = f2fs_write_checkpoint(sbi, &cpc); |
377224c4 CY |
2783 | mutex_unlock(&sbi->gc_mutex); |
2784 | if (err) | |
2785 | goto out; | |
8412663d | 2786 | |
e555da9f JK |
2787 | /* |
2788 | * We filed discard candidates, but actually we don't need to wait for | |
2789 | * all of them, since they'll be issued in idle time along with runtime | |
2790 | * discard option. User configuration looks like using runtime discard | |
2791 | * or periodic fstrim instead of it. | |
2792 | */ | |
7d20c8ab | 2793 | if (f2fs_realtime_discard_enable(sbi)) |
5a615492 JK |
2794 | goto out; |
2795 | ||
2796 | start_block = START_BLOCK(sbi, start_segno); | |
2797 | end_block = START_BLOCK(sbi, end_segno + 1); | |
2798 | ||
2799 | __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen); | |
01f9cf6d CY |
2800 | trimmed = __issue_discard_cmd_range(sbi, &dpolicy, |
2801 | start_block, end_block); | |
5a615492 | 2802 | |
01f9cf6d | 2803 | trimmed += __wait_discard_cmd_range(sbi, &dpolicy, |
0ea80512 | 2804 | start_block, end_block); |
377224c4 | 2805 | out: |
6eae2694 CY |
2806 | if (!err) |
2807 | range->len = F2FS_BLK_TO_BYTES(trimmed); | |
c34f42e2 | 2808 | return err; |
4b2fecc8 JK |
2809 | } |
2810 | ||
351df4b2 JK |
2811 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
2812 | { | |
2813 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2814 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
2815 | return true; | |
2816 | return false; | |
2817 | } | |
2818 | ||
4d57b86d | 2819 | int f2fs_rw_hint_to_seg_type(enum rw_hint hint) |
4f0a03d3 HL |
2820 | { |
2821 | switch (hint) { | |
2822 | case WRITE_LIFE_SHORT: | |
2823 | return CURSEG_HOT_DATA; | |
2824 | case WRITE_LIFE_EXTREME: | |
2825 | return CURSEG_COLD_DATA; | |
2826 | default: | |
2827 | return CURSEG_WARM_DATA; | |
2828 | } | |
2829 | } | |
2830 | ||
0cdd3195 HL |
2831 | /* This returns write hints for each segment type. This hints will be |
2832 | * passed down to block layer. There are mapping tables which depend on | |
2833 | * the mount option 'whint_mode'. | |
2834 | * | |
2835 | * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET. | |
2836 | * | |
2837 | * 2) whint_mode=user-based. F2FS tries to pass down hints given by users. | |
2838 | * | |
2839 | * User F2FS Block | |
2840 | * ---- ---- ----- | |
2841 | * META WRITE_LIFE_NOT_SET | |
2842 | * HOT_NODE " | |
2843 | * WARM_NODE " | |
2844 | * COLD_NODE " | |
2845 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2846 | * extension list " " | |
2847 | * | |
2848 | * -- buffered io | |
2849 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2850 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2851 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2852 | * WRITE_LIFE_NONE " " | |
2853 | * WRITE_LIFE_MEDIUM " " | |
2854 | * WRITE_LIFE_LONG " " | |
2855 | * | |
2856 | * -- direct io | |
2857 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2858 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2859 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2860 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2861 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2862 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
2863 | * | |
f2e703f9 HL |
2864 | * 3) whint_mode=fs-based. F2FS passes down hints with its policy. |
2865 | * | |
2866 | * User F2FS Block | |
2867 | * ---- ---- ----- | |
2868 | * META WRITE_LIFE_MEDIUM; | |
2869 | * HOT_NODE WRITE_LIFE_NOT_SET | |
2870 | * WARM_NODE " | |
2871 | * COLD_NODE WRITE_LIFE_NONE | |
2872 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2873 | * extension list " " | |
2874 | * | |
2875 | * -- buffered io | |
2876 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2877 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2878 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG | |
2879 | * WRITE_LIFE_NONE " " | |
2880 | * WRITE_LIFE_MEDIUM " " | |
2881 | * WRITE_LIFE_LONG " " | |
2882 | * | |
2883 | * -- direct io | |
2884 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2885 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2886 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2887 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2888 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2889 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
0cdd3195 HL |
2890 | */ |
2891 | ||
4d57b86d | 2892 | enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi, |
0cdd3195 HL |
2893 | enum page_type type, enum temp_type temp) |
2894 | { | |
63189b78 | 2895 | if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) { |
0cdd3195 | 2896 | if (type == DATA) { |
f2e703f9 | 2897 | if (temp == WARM) |
0cdd3195 | 2898 | return WRITE_LIFE_NOT_SET; |
f2e703f9 HL |
2899 | else if (temp == HOT) |
2900 | return WRITE_LIFE_SHORT; | |
2901 | else if (temp == COLD) | |
2902 | return WRITE_LIFE_EXTREME; | |
0cdd3195 HL |
2903 | } else { |
2904 | return WRITE_LIFE_NOT_SET; | |
2905 | } | |
63189b78 | 2906 | } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) { |
f2e703f9 HL |
2907 | if (type == DATA) { |
2908 | if (temp == WARM) | |
2909 | return WRITE_LIFE_LONG; | |
2910 | else if (temp == HOT) | |
2911 | return WRITE_LIFE_SHORT; | |
2912 | else if (temp == COLD) | |
2913 | return WRITE_LIFE_EXTREME; | |
2914 | } else if (type == NODE) { | |
2915 | if (temp == WARM || temp == HOT) | |
2916 | return WRITE_LIFE_NOT_SET; | |
2917 | else if (temp == COLD) | |
2918 | return WRITE_LIFE_NONE; | |
2919 | } else if (type == META) { | |
2920 | return WRITE_LIFE_MEDIUM; | |
2921 | } | |
0cdd3195 | 2922 | } |
f2e703f9 | 2923 | return WRITE_LIFE_NOT_SET; |
0cdd3195 HL |
2924 | } |
2925 | ||
81377bd6 | 2926 | static int __get_segment_type_2(struct f2fs_io_info *fio) |
351df4b2 | 2927 | { |
81377bd6 | 2928 | if (fio->type == DATA) |
351df4b2 JK |
2929 | return CURSEG_HOT_DATA; |
2930 | else | |
2931 | return CURSEG_HOT_NODE; | |
2932 | } | |
2933 | ||
81377bd6 | 2934 | static int __get_segment_type_4(struct f2fs_io_info *fio) |
351df4b2 | 2935 | { |
81377bd6 JK |
2936 | if (fio->type == DATA) { |
2937 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 JK |
2938 | |
2939 | if (S_ISDIR(inode->i_mode)) | |
2940 | return CURSEG_HOT_DATA; | |
2941 | else | |
2942 | return CURSEG_COLD_DATA; | |
2943 | } else { | |
81377bd6 | 2944 | if (IS_DNODE(fio->page) && is_cold_node(fio->page)) |
a344b9fd | 2945 | return CURSEG_WARM_NODE; |
351df4b2 JK |
2946 | else |
2947 | return CURSEG_COLD_NODE; | |
2948 | } | |
2949 | } | |
2950 | ||
81377bd6 | 2951 | static int __get_segment_type_6(struct f2fs_io_info *fio) |
351df4b2 | 2952 | { |
81377bd6 JK |
2953 | if (fio->type == DATA) { |
2954 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 | 2955 | |
81377bd6 | 2956 | if (is_cold_data(fio->page) || file_is_cold(inode)) |
351df4b2 | 2957 | return CURSEG_COLD_DATA; |
b6a06cbb | 2958 | if (file_is_hot(inode) || |
b4c3ca8b | 2959 | is_inode_flag_set(inode, FI_HOT_DATA) || |
2079f115 CY |
2960 | f2fs_is_atomic_file(inode) || |
2961 | f2fs_is_volatile_file(inode)) | |
ef095d19 | 2962 | return CURSEG_HOT_DATA; |
4d57b86d | 2963 | return f2fs_rw_hint_to_seg_type(inode->i_write_hint); |
351df4b2 | 2964 | } else { |
81377bd6 JK |
2965 | if (IS_DNODE(fio->page)) |
2966 | return is_cold_node(fio->page) ? CURSEG_WARM_NODE : | |
351df4b2 | 2967 | CURSEG_HOT_NODE; |
ef095d19 | 2968 | return CURSEG_COLD_NODE; |
351df4b2 JK |
2969 | } |
2970 | } | |
2971 | ||
81377bd6 | 2972 | static int __get_segment_type(struct f2fs_io_info *fio) |
351df4b2 | 2973 | { |
a912b54d JK |
2974 | int type = 0; |
2975 | ||
63189b78 | 2976 | switch (F2FS_OPTION(fio->sbi).active_logs) { |
351df4b2 | 2977 | case 2: |
a912b54d JK |
2978 | type = __get_segment_type_2(fio); |
2979 | break; | |
351df4b2 | 2980 | case 4: |
a912b54d JK |
2981 | type = __get_segment_type_4(fio); |
2982 | break; | |
2983 | case 6: | |
2984 | type = __get_segment_type_6(fio); | |
2985 | break; | |
2986 | default: | |
2987 | f2fs_bug_on(fio->sbi, true); | |
351df4b2 | 2988 | } |
81377bd6 | 2989 | |
a912b54d JK |
2990 | if (IS_HOT(type)) |
2991 | fio->temp = HOT; | |
2992 | else if (IS_WARM(type)) | |
2993 | fio->temp = WARM; | |
2994 | else | |
2995 | fio->temp = COLD; | |
2996 | return type; | |
351df4b2 JK |
2997 | } |
2998 | ||
4d57b86d | 2999 | void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
bfad7c2d | 3000 | block_t old_blkaddr, block_t *new_blkaddr, |
fb830fc5 CY |
3001 | struct f2fs_summary *sum, int type, |
3002 | struct f2fs_io_info *fio, bool add_list) | |
351df4b2 JK |
3003 | { |
3004 | struct sit_info *sit_i = SIT_I(sbi); | |
6ae1be13 | 3005 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
351df4b2 | 3006 | |
2b60311d CY |
3007 | down_read(&SM_I(sbi)->curseg_lock); |
3008 | ||
351df4b2 | 3009 | mutex_lock(&curseg->curseg_mutex); |
3d26fa6b | 3010 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3011 | |
3012 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 | 3013 | |
4e6a8d9b JK |
3014 | f2fs_wait_discard_bio(sbi, *new_blkaddr); |
3015 | ||
351df4b2 JK |
3016 | /* |
3017 | * __add_sum_entry should be resided under the curseg_mutex | |
3018 | * because, this function updates a summary entry in the | |
3019 | * current summary block. | |
3020 | */ | |
e79efe3b | 3021 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 3022 | |
351df4b2 | 3023 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
3024 | |
3025 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 3026 | |
65f1b80b YS |
3027 | /* |
3028 | * SIT information should be updated before segment allocation, | |
3029 | * since SSR needs latest valid block information. | |
3030 | */ | |
3031 | update_sit_entry(sbi, *new_blkaddr, 1); | |
3032 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
3033 | update_sit_entry(sbi, old_blkaddr, -1); | |
3034 | ||
c6f82fe9 JK |
3035 | if (!__has_curseg_space(sbi, type)) |
3036 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
65f1b80b | 3037 | |
351df4b2 | 3038 | /* |
65f1b80b YS |
3039 | * segment dirty status should be updated after segment allocation, |
3040 | * so we just need to update status only one time after previous | |
3041 | * segment being closed. | |
351df4b2 | 3042 | */ |
65f1b80b YS |
3043 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); |
3044 | locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr)); | |
5e443818 | 3045 | |
3d26fa6b | 3046 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3047 | |
704956ec | 3048 | if (page && IS_NODESEG(type)) { |
351df4b2 JK |
3049 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
3050 | ||
704956ec CY |
3051 | f2fs_inode_chksum_set(sbi, page); |
3052 | } | |
3053 | ||
fb830fc5 CY |
3054 | if (add_list) { |
3055 | struct f2fs_bio_info *io; | |
3056 | ||
3057 | INIT_LIST_HEAD(&fio->list); | |
3058 | fio->in_list = true; | |
fe16efe6 | 3059 | fio->retry = false; |
fb830fc5 CY |
3060 | io = sbi->write_io[fio->type] + fio->temp; |
3061 | spin_lock(&io->io_lock); | |
3062 | list_add_tail(&fio->list, &io->io_list); | |
3063 | spin_unlock(&io->io_lock); | |
3064 | } | |
3065 | ||
bfad7c2d | 3066 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d CY |
3067 | |
3068 | up_read(&SM_I(sbi)->curseg_lock); | |
bfad7c2d JK |
3069 | } |
3070 | ||
39d787be CY |
3071 | static void update_device_state(struct f2fs_io_info *fio) |
3072 | { | |
3073 | struct f2fs_sb_info *sbi = fio->sbi; | |
3074 | unsigned int devidx; | |
3075 | ||
3076 | if (!sbi->s_ndevs) | |
3077 | return; | |
3078 | ||
3079 | devidx = f2fs_target_device_index(sbi, fio->new_blkaddr); | |
3080 | ||
3081 | /* update device state for fsync */ | |
4d57b86d | 3082 | f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO); |
1228b482 CY |
3083 | |
3084 | /* update device state for checkpoint */ | |
3085 | if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) { | |
3086 | spin_lock(&sbi->dev_lock); | |
3087 | f2fs_set_bit(devidx, (char *)&sbi->dirty_device); | |
3088 | spin_unlock(&sbi->dev_lock); | |
3089 | } | |
39d787be CY |
3090 | } |
3091 | ||
05ca3632 | 3092 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 3093 | { |
81377bd6 | 3094 | int type = __get_segment_type(fio); |
107a805d | 3095 | bool keep_order = (test_opt(fio->sbi, LFS) && type == CURSEG_COLD_DATA); |
bfad7c2d | 3096 | |
107a805d CY |
3097 | if (keep_order) |
3098 | down_read(&fio->sbi->io_order_lock); | |
0a595eba | 3099 | reallocate: |
4d57b86d | 3100 | f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
fb830fc5 | 3101 | &fio->new_blkaddr, sum, type, fio, true); |
6aa58d8a CY |
3102 | if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO) |
3103 | invalidate_mapping_pages(META_MAPPING(fio->sbi), | |
3104 | fio->old_blkaddr, fio->old_blkaddr); | |
bfad7c2d | 3105 | |
351df4b2 | 3106 | /* writeout dirty page into bdev */ |
fe16efe6 CY |
3107 | f2fs_submit_page_write(fio); |
3108 | if (fio->retry) { | |
0a595eba JK |
3109 | fio->old_blkaddr = fio->new_blkaddr; |
3110 | goto reallocate; | |
3111 | } | |
fe16efe6 CY |
3112 | |
3113 | update_device_state(fio); | |
3114 | ||
107a805d CY |
3115 | if (keep_order) |
3116 | up_read(&fio->sbi->io_order_lock); | |
351df4b2 JK |
3117 | } |
3118 | ||
4d57b86d | 3119 | void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page, |
b0af6d49 | 3120 | enum iostat_type io_type) |
351df4b2 | 3121 | { |
458e6197 | 3122 | struct f2fs_io_info fio = { |
05ca3632 | 3123 | .sbi = sbi, |
458e6197 | 3124 | .type = META, |
0cdd3195 | 3125 | .temp = HOT, |
04d328de | 3126 | .op = REQ_OP_WRITE, |
70fd7614 | 3127 | .op_flags = REQ_SYNC | REQ_META | REQ_PRIO, |
7a9d7548 CY |
3128 | .old_blkaddr = page->index, |
3129 | .new_blkaddr = page->index, | |
05ca3632 | 3130 | .page = page, |
4375a336 | 3131 | .encrypted_page = NULL, |
fb830fc5 | 3132 | .in_list = false, |
458e6197 JK |
3133 | }; |
3134 | ||
2b947003 | 3135 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
04d328de | 3136 | fio.op_flags &= ~REQ_META; |
2b947003 | 3137 | |
351df4b2 | 3138 | set_page_writeback(page); |
17c50035 | 3139 | ClearPageError(page); |
b9109b0e | 3140 | f2fs_submit_page_write(&fio); |
b0af6d49 | 3141 | |
b63e7be5 | 3142 | stat_inc_meta_count(sbi, page->index); |
b0af6d49 | 3143 | f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE); |
351df4b2 JK |
3144 | } |
3145 | ||
4d57b86d | 3146 | void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
3147 | { |
3148 | struct f2fs_summary sum; | |
05ca3632 | 3149 | |
351df4b2 | 3150 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 3151 | do_write_page(&sum, fio); |
b0af6d49 CY |
3152 | |
3153 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
3154 | } |
3155 | ||
4d57b86d CY |
3156 | void f2fs_outplace_write_data(struct dnode_of_data *dn, |
3157 | struct f2fs_io_info *fio) | |
351df4b2 | 3158 | { |
05ca3632 | 3159 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 | 3160 | struct f2fs_summary sum; |
351df4b2 | 3161 | |
9850cf4a | 3162 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
7735730d | 3163 | set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version); |
05ca3632 | 3164 | do_write_page(&sum, fio); |
f28b3434 | 3165 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
b0af6d49 CY |
3166 | |
3167 | f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
3168 | } |
3169 | ||
4d57b86d | 3170 | int f2fs_inplace_write_data(struct f2fs_io_info *fio) |
351df4b2 | 3171 | { |
b0af6d49 | 3172 | int err; |
d21b0f23 | 3173 | struct f2fs_sb_info *sbi = fio->sbi; |
b0af6d49 | 3174 | |
7a9d7548 | 3175 | fio->new_blkaddr = fio->old_blkaddr; |
0cdd3195 HL |
3176 | /* i/o temperature is needed for passing down write hints */ |
3177 | __get_segment_type(fio); | |
d21b0f23 YH |
3178 | |
3179 | f2fs_bug_on(sbi, !IS_DATASEG(get_seg_entry(sbi, | |
3180 | GET_SEGNO(sbi, fio->new_blkaddr))->type)); | |
3181 | ||
05ca3632 | 3182 | stat_inc_inplace_blocks(fio->sbi); |
b0af6d49 CY |
3183 | |
3184 | err = f2fs_submit_page_bio(fio); | |
39d787be CY |
3185 | if (!err) |
3186 | update_device_state(fio); | |
b0af6d49 CY |
3187 | |
3188 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
3189 | ||
3190 | return err; | |
351df4b2 JK |
3191 | } |
3192 | ||
2b60311d CY |
3193 | static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi, |
3194 | unsigned int segno) | |
3195 | { | |
3196 | int i; | |
3197 | ||
3198 | for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { | |
3199 | if (CURSEG_I(sbi, i)->segno == segno) | |
3200 | break; | |
3201 | } | |
3202 | return i; | |
3203 | } | |
3204 | ||
4d57b86d | 3205 | void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 3206 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 3207 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
3208 | { |
3209 | struct sit_info *sit_i = SIT_I(sbi); | |
3210 | struct curseg_info *curseg; | |
3211 | unsigned int segno, old_cursegno; | |
3212 | struct seg_entry *se; | |
3213 | int type; | |
19f106bc | 3214 | unsigned short old_blkoff; |
351df4b2 JK |
3215 | |
3216 | segno = GET_SEGNO(sbi, new_blkaddr); | |
3217 | se = get_seg_entry(sbi, segno); | |
3218 | type = se->type; | |
3219 | ||
2b60311d CY |
3220 | down_write(&SM_I(sbi)->curseg_lock); |
3221 | ||
19f106bc CY |
3222 | if (!recover_curseg) { |
3223 | /* for recovery flow */ | |
3224 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
3225 | if (old_blkaddr == NULL_ADDR) | |
3226 | type = CURSEG_COLD_DATA; | |
3227 | else | |
3228 | type = CURSEG_WARM_DATA; | |
3229 | } | |
3230 | } else { | |
2b60311d CY |
3231 | if (IS_CURSEG(sbi, segno)) { |
3232 | /* se->type is volatile as SSR allocation */ | |
3233 | type = __f2fs_get_curseg(sbi, segno); | |
3234 | f2fs_bug_on(sbi, type == NO_CHECK_TYPE); | |
3235 | } else { | |
351df4b2 | 3236 | type = CURSEG_WARM_DATA; |
2b60311d | 3237 | } |
351df4b2 | 3238 | } |
19f106bc | 3239 | |
2c190504 | 3240 | f2fs_bug_on(sbi, !IS_DATASEG(type)); |
351df4b2 JK |
3241 | curseg = CURSEG_I(sbi, type); |
3242 | ||
3243 | mutex_lock(&curseg->curseg_mutex); | |
3d26fa6b | 3244 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3245 | |
3246 | old_cursegno = curseg->segno; | |
19f106bc | 3247 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
3248 | |
3249 | /* change the current segment */ | |
3250 | if (segno != curseg->segno) { | |
3251 | curseg->next_segno = segno; | |
025d63a4 | 3252 | change_curseg(sbi, type); |
351df4b2 JK |
3253 | } |
3254 | ||
491c0854 | 3255 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 3256 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 3257 | |
28bc106b | 3258 | if (!recover_curseg || recover_newaddr) |
6e2c64ad | 3259 | update_sit_entry(sbi, new_blkaddr, 1); |
6aa58d8a CY |
3260 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
3261 | invalidate_mapping_pages(META_MAPPING(sbi), | |
3262 | old_blkaddr, old_blkaddr); | |
6e2c64ad | 3263 | update_sit_entry(sbi, old_blkaddr, -1); |
6aa58d8a | 3264 | } |
6e2c64ad JK |
3265 | |
3266 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
3267 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
3268 | ||
351df4b2 | 3269 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 3270 | |
19f106bc CY |
3271 | if (recover_curseg) { |
3272 | if (old_cursegno != curseg->segno) { | |
3273 | curseg->next_segno = old_cursegno; | |
025d63a4 | 3274 | change_curseg(sbi, type); |
19f106bc CY |
3275 | } |
3276 | curseg->next_blkoff = old_blkoff; | |
3277 | } | |
3278 | ||
3d26fa6b | 3279 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3280 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d | 3281 | up_write(&SM_I(sbi)->curseg_lock); |
351df4b2 JK |
3282 | } |
3283 | ||
528e3459 CY |
3284 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
3285 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
3286 | unsigned char version, bool recover_curseg, |
3287 | bool recover_newaddr) | |
528e3459 CY |
3288 | { |
3289 | struct f2fs_summary sum; | |
3290 | ||
3291 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
3292 | ||
4d57b86d | 3293 | f2fs_do_replace_block(sbi, &sum, old_addr, new_addr, |
28bc106b | 3294 | recover_curseg, recover_newaddr); |
528e3459 | 3295 | |
f28b3434 | 3296 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
3297 | } |
3298 | ||
93dfe2ac | 3299 | void f2fs_wait_on_page_writeback(struct page *page, |
bae0ee7a | 3300 | enum page_type type, bool ordered, bool locked) |
93dfe2ac | 3301 | { |
93dfe2ac | 3302 | if (PageWriteback(page)) { |
4081363f JK |
3303 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
3304 | ||
bab475c5 | 3305 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type); |
bae0ee7a | 3306 | if (ordered) { |
fec1d657 | 3307 | wait_on_page_writeback(page); |
bae0ee7a CY |
3308 | f2fs_bug_on(sbi, locked && PageWriteback(page)); |
3309 | } else { | |
fec1d657 | 3310 | wait_for_stable_page(page); |
bae0ee7a | 3311 | } |
93dfe2ac JK |
3312 | } |
3313 | } | |
3314 | ||
0ded69f6 | 3315 | void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr) |
08b39fbd | 3316 | { |
0ded69f6 | 3317 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
08b39fbd CY |
3318 | struct page *cpage; |
3319 | ||
0ded69f6 JK |
3320 | if (!f2fs_post_read_required(inode)) |
3321 | return; | |
3322 | ||
e1da7872 | 3323 | if (!is_valid_data_blkaddr(sbi, blkaddr)) |
08b39fbd CY |
3324 | return; |
3325 | ||
08b39fbd CY |
3326 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
3327 | if (cpage) { | |
bae0ee7a | 3328 | f2fs_wait_on_page_writeback(cpage, DATA, true, true); |
08b39fbd CY |
3329 | f2fs_put_page(cpage, 1); |
3330 | } | |
3331 | } | |
3332 | ||
1e78e8bd ST |
3333 | void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr, |
3334 | block_t len) | |
3335 | { | |
3336 | block_t i; | |
3337 | ||
3338 | for (i = 0; i < len; i++) | |
3339 | f2fs_wait_on_block_writeback(inode, blkaddr + i); | |
3340 | } | |
3341 | ||
7735730d | 3342 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3343 | { |
3344 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3345 | struct curseg_info *seg_i; | |
3346 | unsigned char *kaddr; | |
3347 | struct page *page; | |
3348 | block_t start; | |
3349 | int i, j, offset; | |
3350 | ||
3351 | start = start_sum_block(sbi); | |
3352 | ||
4d57b86d | 3353 | page = f2fs_get_meta_page(sbi, start++); |
7735730d CY |
3354 | if (IS_ERR(page)) |
3355 | return PTR_ERR(page); | |
351df4b2 JK |
3356 | kaddr = (unsigned char *)page_address(page); |
3357 | ||
3358 | /* Step 1: restore nat cache */ | |
3359 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3360 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3361 | |
3362 | /* Step 2: restore sit cache */ | |
3363 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3364 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3365 | offset = 2 * SUM_JOURNAL_SIZE; |
3366 | ||
3367 | /* Step 3: restore summary entries */ | |
3368 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3369 | unsigned short blk_off; | |
3370 | unsigned int segno; | |
3371 | ||
3372 | seg_i = CURSEG_I(sbi, i); | |
3373 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
3374 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
3375 | seg_i->next_segno = segno; | |
3376 | reset_curseg(sbi, i, 0); | |
3377 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
3378 | seg_i->next_blkoff = blk_off; | |
3379 | ||
3380 | if (seg_i->alloc_type == SSR) | |
3381 | blk_off = sbi->blocks_per_seg; | |
3382 | ||
3383 | for (j = 0; j < blk_off; j++) { | |
3384 | struct f2fs_summary *s; | |
3385 | s = (struct f2fs_summary *)(kaddr + offset); | |
3386 | seg_i->sum_blk->entries[j] = *s; | |
3387 | offset += SUMMARY_SIZE; | |
09cbfeaf | 3388 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3389 | SUM_FOOTER_SIZE) |
3390 | continue; | |
3391 | ||
3392 | f2fs_put_page(page, 1); | |
3393 | page = NULL; | |
3394 | ||
4d57b86d | 3395 | page = f2fs_get_meta_page(sbi, start++); |
7735730d CY |
3396 | if (IS_ERR(page)) |
3397 | return PTR_ERR(page); | |
351df4b2 JK |
3398 | kaddr = (unsigned char *)page_address(page); |
3399 | offset = 0; | |
3400 | } | |
3401 | } | |
3402 | f2fs_put_page(page, 1); | |
7735730d | 3403 | return 0; |
351df4b2 JK |
3404 | } |
3405 | ||
3406 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
3407 | { | |
3408 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3409 | struct f2fs_summary_block *sum; | |
3410 | struct curseg_info *curseg; | |
3411 | struct page *new; | |
3412 | unsigned short blk_off; | |
3413 | unsigned int segno = 0; | |
3414 | block_t blk_addr = 0; | |
7735730d | 3415 | int err = 0; |
351df4b2 JK |
3416 | |
3417 | /* get segment number and block addr */ | |
3418 | if (IS_DATASEG(type)) { | |
3419 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
3420 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
3421 | CURSEG_HOT_DATA]); | |
119ee914 | 3422 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3423 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
3424 | else | |
3425 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
3426 | } else { | |
3427 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
3428 | CURSEG_HOT_NODE]); | |
3429 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
3430 | CURSEG_HOT_NODE]); | |
119ee914 | 3431 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3432 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
3433 | type - CURSEG_HOT_NODE); | |
3434 | else | |
3435 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
3436 | } | |
3437 | ||
4d57b86d | 3438 | new = f2fs_get_meta_page(sbi, blk_addr); |
7735730d CY |
3439 | if (IS_ERR(new)) |
3440 | return PTR_ERR(new); | |
351df4b2 JK |
3441 | sum = (struct f2fs_summary_block *)page_address(new); |
3442 | ||
3443 | if (IS_NODESEG(type)) { | |
119ee914 | 3444 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
3445 | struct f2fs_summary *ns = &sum->entries[0]; |
3446 | int i; | |
3447 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
3448 | ns->version = 0; | |
3449 | ns->ofs_in_node = 0; | |
3450 | } | |
3451 | } else { | |
7735730d CY |
3452 | err = f2fs_restore_node_summary(sbi, segno, sum); |
3453 | if (err) | |
3454 | goto out; | |
351df4b2 JK |
3455 | } |
3456 | } | |
3457 | ||
3458 | /* set uncompleted segment to curseg */ | |
3459 | curseg = CURSEG_I(sbi, type); | |
3460 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
3461 | |
3462 | /* update journal info */ | |
3463 | down_write(&curseg->journal_rwsem); | |
3464 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
3465 | up_write(&curseg->journal_rwsem); | |
3466 | ||
3467 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
3468 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
3469 | curseg->next_segno = segno; |
3470 | reset_curseg(sbi, type, 0); | |
3471 | curseg->alloc_type = ckpt->alloc_type[type]; | |
3472 | curseg->next_blkoff = blk_off; | |
3473 | mutex_unlock(&curseg->curseg_mutex); | |
7735730d | 3474 | out: |
351df4b2 | 3475 | f2fs_put_page(new, 1); |
7735730d | 3476 | return err; |
351df4b2 JK |
3477 | } |
3478 | ||
3479 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
3480 | { | |
21d3f8e1 JQ |
3481 | struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal; |
3482 | struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal; | |
351df4b2 | 3483 | int type = CURSEG_HOT_DATA; |
e4fc5fbf | 3484 | int err; |
351df4b2 | 3485 | |
aaec2b1d | 3486 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
4d57b86d | 3487 | int npages = f2fs_npages_for_summary_flush(sbi, true); |
3fa06d7b CY |
3488 | |
3489 | if (npages >= 2) | |
4d57b86d | 3490 | f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages, |
26879fb1 | 3491 | META_CP, true); |
3fa06d7b | 3492 | |
351df4b2 | 3493 | /* restore for compacted data summary */ |
7735730d CY |
3494 | err = read_compacted_summaries(sbi); |
3495 | if (err) | |
3496 | return err; | |
351df4b2 JK |
3497 | type = CURSEG_HOT_NODE; |
3498 | } | |
3499 | ||
119ee914 | 3500 | if (__exist_node_summaries(sbi)) |
4d57b86d | 3501 | f2fs_ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 3502 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 3503 | |
e4fc5fbf CY |
3504 | for (; type <= CURSEG_COLD_NODE; type++) { |
3505 | err = read_normal_summaries(sbi, type); | |
3506 | if (err) | |
3507 | return err; | |
3508 | } | |
3509 | ||
21d3f8e1 JQ |
3510 | /* sanity check for summary blocks */ |
3511 | if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES || | |
3512 | sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) | |
3513 | return -EINVAL; | |
3514 | ||
351df4b2 JK |
3515 | return 0; |
3516 | } | |
3517 | ||
3518 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
3519 | { | |
3520 | struct page *page; | |
3521 | unsigned char *kaddr; | |
3522 | struct f2fs_summary *summary; | |
3523 | struct curseg_info *seg_i; | |
3524 | int written_size = 0; | |
3525 | int i, j; | |
3526 | ||
4d57b86d | 3527 | page = f2fs_grab_meta_page(sbi, blkaddr++); |
351df4b2 | 3528 | kaddr = (unsigned char *)page_address(page); |
81114baa | 3529 | memset(kaddr, 0, PAGE_SIZE); |
351df4b2 JK |
3530 | |
3531 | /* Step 1: write nat cache */ | |
3532 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3533 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3534 | written_size += SUM_JOURNAL_SIZE; |
3535 | ||
3536 | /* Step 2: write sit cache */ | |
3537 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3538 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3539 | written_size += SUM_JOURNAL_SIZE; |
3540 | ||
351df4b2 JK |
3541 | /* Step 3: write summary entries */ |
3542 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3543 | unsigned short blkoff; | |
3544 | seg_i = CURSEG_I(sbi, i); | |
3545 | if (sbi->ckpt->alloc_type[i] == SSR) | |
3546 | blkoff = sbi->blocks_per_seg; | |
3547 | else | |
3548 | blkoff = curseg_blkoff(sbi, i); | |
3549 | ||
3550 | for (j = 0; j < blkoff; j++) { | |
3551 | if (!page) { | |
4d57b86d | 3552 | page = f2fs_grab_meta_page(sbi, blkaddr++); |
351df4b2 | 3553 | kaddr = (unsigned char *)page_address(page); |
81114baa | 3554 | memset(kaddr, 0, PAGE_SIZE); |
351df4b2 JK |
3555 | written_size = 0; |
3556 | } | |
3557 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
3558 | *summary = seg_i->sum_blk->entries[j]; | |
3559 | written_size += SUMMARY_SIZE; | |
351df4b2 | 3560 | |
09cbfeaf | 3561 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3562 | SUM_FOOTER_SIZE) |
3563 | continue; | |
3564 | ||
e8d61a74 | 3565 | set_page_dirty(page); |
351df4b2 JK |
3566 | f2fs_put_page(page, 1); |
3567 | page = NULL; | |
3568 | } | |
3569 | } | |
e8d61a74 CY |
3570 | if (page) { |
3571 | set_page_dirty(page); | |
351df4b2 | 3572 | f2fs_put_page(page, 1); |
e8d61a74 | 3573 | } |
351df4b2 JK |
3574 | } |
3575 | ||
3576 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
3577 | block_t blkaddr, int type) | |
3578 | { | |
3579 | int i, end; | |
3580 | if (IS_DATASEG(type)) | |
3581 | end = type + NR_CURSEG_DATA_TYPE; | |
3582 | else | |
3583 | end = type + NR_CURSEG_NODE_TYPE; | |
3584 | ||
b7ad7512 CY |
3585 | for (i = type; i < end; i++) |
3586 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
3587 | } |
3588 | ||
4d57b86d | 3589 | void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
351df4b2 | 3590 | { |
aaec2b1d | 3591 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
3592 | write_compacted_summaries(sbi, start_blk); |
3593 | else | |
3594 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
3595 | } | |
3596 | ||
4d57b86d | 3597 | void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
351df4b2 | 3598 | { |
119ee914 | 3599 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
3600 | } |
3601 | ||
4d57b86d | 3602 | int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
3603 | unsigned int val, int alloc) |
3604 | { | |
3605 | int i; | |
3606 | ||
3607 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
3608 | for (i = 0; i < nats_in_cursum(journal); i++) { |
3609 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
3610 | return i; |
3611 | } | |
dfc08a12 CY |
3612 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
3613 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 3614 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
3615 | for (i = 0; i < sits_in_cursum(journal); i++) |
3616 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 3617 | return i; |
dfc08a12 CY |
3618 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
3619 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
3620 | } |
3621 | return -1; | |
3622 | } | |
3623 | ||
3624 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
3625 | unsigned int segno) | |
3626 | { | |
7735730d | 3627 | return f2fs_get_meta_page_nofail(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
3628 | } |
3629 | ||
3630 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
3631 | unsigned int start) | |
3632 | { | |
3633 | struct sit_info *sit_i = SIT_I(sbi); | |
068c3cd8 | 3634 | struct page *page; |
351df4b2 | 3635 | pgoff_t src_off, dst_off; |
351df4b2 JK |
3636 | |
3637 | src_off = current_sit_addr(sbi, start); | |
3638 | dst_off = next_sit_addr(sbi, src_off); | |
3639 | ||
4d57b86d | 3640 | page = f2fs_grab_meta_page(sbi, dst_off); |
068c3cd8 | 3641 | seg_info_to_sit_page(sbi, page, start); |
351df4b2 | 3642 | |
068c3cd8 | 3643 | set_page_dirty(page); |
351df4b2 JK |
3644 | set_to_next_sit(sit_i, start); |
3645 | ||
068c3cd8 | 3646 | return page; |
351df4b2 JK |
3647 | } |
3648 | ||
184a5cd2 CY |
3649 | static struct sit_entry_set *grab_sit_entry_set(void) |
3650 | { | |
3651 | struct sit_entry_set *ses = | |
80c54505 | 3652 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
3653 | |
3654 | ses->entry_cnt = 0; | |
3655 | INIT_LIST_HEAD(&ses->set_list); | |
3656 | return ses; | |
3657 | } | |
3658 | ||
3659 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
3660 | { | |
3661 | list_del(&ses->set_list); | |
3662 | kmem_cache_free(sit_entry_set_slab, ses); | |
3663 | } | |
3664 | ||
3665 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
3666 | struct list_head *head) | |
3667 | { | |
3668 | struct sit_entry_set *next = ses; | |
3669 | ||
3670 | if (list_is_last(&ses->set_list, head)) | |
3671 | return; | |
3672 | ||
3673 | list_for_each_entry_continue(next, head, set_list) | |
3674 | if (ses->entry_cnt <= next->entry_cnt) | |
3675 | break; | |
3676 | ||
3677 | list_move_tail(&ses->set_list, &next->set_list); | |
3678 | } | |
3679 | ||
3680 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
3681 | { | |
3682 | struct sit_entry_set *ses; | |
3683 | unsigned int start_segno = START_SEGNO(segno); | |
3684 | ||
3685 | list_for_each_entry(ses, head, set_list) { | |
3686 | if (ses->start_segno == start_segno) { | |
3687 | ses->entry_cnt++; | |
3688 | adjust_sit_entry_set(ses, head); | |
3689 | return; | |
3690 | } | |
3691 | } | |
3692 | ||
3693 | ses = grab_sit_entry_set(); | |
3694 | ||
3695 | ses->start_segno = start_segno; | |
3696 | ses->entry_cnt++; | |
3697 | list_add(&ses->set_list, head); | |
3698 | } | |
3699 | ||
3700 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
3701 | { | |
3702 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
3703 | struct list_head *set_list = &sm_info->sit_entry_set; | |
3704 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
3705 | unsigned int segno; |
3706 | ||
7cd8558b | 3707 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
3708 | add_sit_entry(segno, set_list); |
3709 | } | |
3710 | ||
3711 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
3712 | { |
3713 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3714 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
3715 | int i; |
3716 | ||
b7ad7512 | 3717 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 3718 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
3719 | unsigned int segno; |
3720 | bool dirtied; | |
3721 | ||
dfc08a12 | 3722 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
3723 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
3724 | ||
3725 | if (!dirtied) | |
3726 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 3727 | } |
dfc08a12 | 3728 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 3729 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
3730 | } |
3731 | ||
0a8165d7 | 3732 | /* |
351df4b2 JK |
3733 | * CP calls this function, which flushes SIT entries including sit_journal, |
3734 | * and moves prefree segs to free segs. | |
3735 | */ | |
4d57b86d | 3736 | void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
3737 | { |
3738 | struct sit_info *sit_i = SIT_I(sbi); | |
3739 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
3740 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3741 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
3742 | struct sit_entry_set *ses, *tmp; |
3743 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
184a5cd2 | 3744 | bool to_journal = true; |
4b2fecc8 | 3745 | struct seg_entry *se; |
351df4b2 | 3746 | |
3d26fa6b | 3747 | down_write(&sit_i->sentry_lock); |
351df4b2 | 3748 | |
2b11a74b WL |
3749 | if (!sit_i->dirty_sentries) |
3750 | goto out; | |
3751 | ||
351df4b2 | 3752 | /* |
184a5cd2 CY |
3753 | * add and account sit entries of dirty bitmap in sit entry |
3754 | * set temporarily | |
351df4b2 | 3755 | */ |
184a5cd2 | 3756 | add_sits_in_set(sbi); |
351df4b2 | 3757 | |
184a5cd2 CY |
3758 | /* |
3759 | * if there are no enough space in journal to store dirty sit | |
3760 | * entries, remove all entries from journal and add and account | |
3761 | * them in sit entry set. | |
3762 | */ | |
dfc08a12 | 3763 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL)) |
184a5cd2 | 3764 | remove_sits_in_journal(sbi); |
b2955550 | 3765 | |
184a5cd2 CY |
3766 | /* |
3767 | * there are two steps to flush sit entries: | |
3768 | * #1, flush sit entries to journal in current cold data summary block. | |
3769 | * #2, flush sit entries to sit page. | |
3770 | */ | |
3771 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 3772 | struct page *page = NULL; |
184a5cd2 CY |
3773 | struct f2fs_sit_block *raw_sit = NULL; |
3774 | unsigned int start_segno = ses->start_segno; | |
3775 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 3776 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
3777 | unsigned int segno = start_segno; |
3778 | ||
3779 | if (to_journal && | |
dfc08a12 | 3780 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
3781 | to_journal = false; |
3782 | ||
b7ad7512 CY |
3783 | if (to_journal) { |
3784 | down_write(&curseg->journal_rwsem); | |
3785 | } else { | |
184a5cd2 CY |
3786 | page = get_next_sit_page(sbi, start_segno); |
3787 | raw_sit = page_address(page); | |
351df4b2 | 3788 | } |
351df4b2 | 3789 | |
184a5cd2 CY |
3790 | /* flush dirty sit entries in region of current sit set */ |
3791 | for_each_set_bit_from(segno, bitmap, end) { | |
3792 | int offset, sit_offset; | |
4b2fecc8 JK |
3793 | |
3794 | se = get_seg_entry(sbi, segno); | |
56b07e7e ZZ |
3795 | #ifdef CONFIG_F2FS_CHECK_FS |
3796 | if (memcmp(se->cur_valid_map, se->cur_valid_map_mir, | |
3797 | SIT_VBLOCK_MAP_SIZE)) | |
3798 | f2fs_bug_on(sbi, 1); | |
3799 | #endif | |
184a5cd2 CY |
3800 | |
3801 | /* add discard candidates */ | |
c473f1a9 | 3802 | if (!(cpc->reason & CP_DISCARD)) { |
4b2fecc8 | 3803 | cpc->trim_start = segno; |
25290fa5 | 3804 | add_discard_addrs(sbi, cpc, false); |
4b2fecc8 | 3805 | } |
184a5cd2 CY |
3806 | |
3807 | if (to_journal) { | |
4d57b86d | 3808 | offset = f2fs_lookup_journal_in_cursum(journal, |
184a5cd2 CY |
3809 | SIT_JOURNAL, segno, 1); |
3810 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 3811 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
3812 | cpu_to_le32(segno); |
3813 | seg_info_to_raw_sit(se, | |
dfc08a12 | 3814 | &sit_in_journal(journal, offset)); |
56b07e7e ZZ |
3815 | check_block_count(sbi, segno, |
3816 | &sit_in_journal(journal, offset)); | |
184a5cd2 CY |
3817 | } else { |
3818 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
3819 | seg_info_to_raw_sit(se, | |
3820 | &raw_sit->entries[sit_offset]); | |
56b07e7e ZZ |
3821 | check_block_count(sbi, segno, |
3822 | &raw_sit->entries[sit_offset]); | |
184a5cd2 | 3823 | } |
351df4b2 | 3824 | |
184a5cd2 CY |
3825 | __clear_bit(segno, bitmap); |
3826 | sit_i->dirty_sentries--; | |
3827 | ses->entry_cnt--; | |
351df4b2 JK |
3828 | } |
3829 | ||
b7ad7512 CY |
3830 | if (to_journal) |
3831 | up_write(&curseg->journal_rwsem); | |
3832 | else | |
184a5cd2 CY |
3833 | f2fs_put_page(page, 1); |
3834 | ||
3835 | f2fs_bug_on(sbi, ses->entry_cnt); | |
3836 | release_sit_entry_set(ses); | |
351df4b2 | 3837 | } |
184a5cd2 CY |
3838 | |
3839 | f2fs_bug_on(sbi, !list_empty(head)); | |
3840 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 3841 | out: |
c473f1a9 | 3842 | if (cpc->reason & CP_DISCARD) { |
650d3c4e YH |
3843 | __u64 trim_start = cpc->trim_start; |
3844 | ||
4b2fecc8 | 3845 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
25290fa5 | 3846 | add_discard_addrs(sbi, cpc, false); |
650d3c4e YH |
3847 | |
3848 | cpc->trim_start = trim_start; | |
4b2fecc8 | 3849 | } |
3d26fa6b | 3850 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3851 | |
351df4b2 JK |
3852 | set_prefree_as_free_segments(sbi); |
3853 | } | |
3854 | ||
3855 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
3856 | { | |
3857 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
351df4b2 JK |
3858 | struct sit_info *sit_i; |
3859 | unsigned int sit_segs, start; | |
ae27d62e | 3860 | char *src_bitmap; |
351df4b2 JK |
3861 | unsigned int bitmap_size; |
3862 | ||
3863 | /* allocate memory for SIT information */ | |
acbf054d | 3864 | sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL); |
351df4b2 JK |
3865 | if (!sit_i) |
3866 | return -ENOMEM; | |
3867 | ||
3868 | SM_I(sbi)->sit_info = sit_i; | |
3869 | ||
9d2a789c KC |
3870 | sit_i->sentries = |
3871 | f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry), | |
3872 | MAIN_SEGS(sbi)), | |
3873 | GFP_KERNEL); | |
351df4b2 JK |
3874 | if (!sit_i->sentries) |
3875 | return -ENOMEM; | |
3876 | ||
7cd8558b | 3877 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 CY |
3878 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, bitmap_size, |
3879 | GFP_KERNEL); | |
351df4b2 JK |
3880 | if (!sit_i->dirty_sentries_bitmap) |
3881 | return -ENOMEM; | |
3882 | ||
7cd8558b | 3883 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 | 3884 | sit_i->sentries[start].cur_valid_map |
acbf054d | 3885 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
351df4b2 | 3886 | sit_i->sentries[start].ckpt_valid_map |
acbf054d | 3887 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
a66cdd98 | 3888 | if (!sit_i->sentries[start].cur_valid_map || |
3e025740 | 3889 | !sit_i->sentries[start].ckpt_valid_map) |
351df4b2 | 3890 | return -ENOMEM; |
3e025740 | 3891 | |
355e7891 CY |
3892 | #ifdef CONFIG_F2FS_CHECK_FS |
3893 | sit_i->sentries[start].cur_valid_map_mir | |
acbf054d | 3894 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
355e7891 CY |
3895 | if (!sit_i->sentries[start].cur_valid_map_mir) |
3896 | return -ENOMEM; | |
3897 | #endif | |
3898 | ||
7d20c8ab CY |
3899 | sit_i->sentries[start].discard_map |
3900 | = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, | |
3901 | GFP_KERNEL); | |
3902 | if (!sit_i->sentries[start].discard_map) | |
3903 | return -ENOMEM; | |
351df4b2 JK |
3904 | } |
3905 | ||
acbf054d | 3906 | sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
60a3b782 JK |
3907 | if (!sit_i->tmp_map) |
3908 | return -ENOMEM; | |
3909 | ||
2c70c5e3 | 3910 | if (__is_large_section(sbi)) { |
9d2a789c KC |
3911 | sit_i->sec_entries = |
3912 | f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry), | |
3913 | MAIN_SECS(sbi)), | |
3914 | GFP_KERNEL); | |
351df4b2 JK |
3915 | if (!sit_i->sec_entries) |
3916 | return -ENOMEM; | |
3917 | } | |
3918 | ||
3919 | /* get information related with SIT */ | |
3920 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
3921 | ||
3922 | /* setup SIT bitmap from ckeckpoint pack */ | |
3923 | bitmap_size = __bitmap_size(sbi, SIT_BITMAP); | |
3924 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); | |
3925 | ||
ae27d62e CY |
3926 | sit_i->sit_bitmap = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); |
3927 | if (!sit_i->sit_bitmap) | |
351df4b2 | 3928 | return -ENOMEM; |
351df4b2 | 3929 | |
ae27d62e CY |
3930 | #ifdef CONFIG_F2FS_CHECK_FS |
3931 | sit_i->sit_bitmap_mir = kmemdup(src_bitmap, bitmap_size, GFP_KERNEL); | |
3932 | if (!sit_i->sit_bitmap_mir) | |
3933 | return -ENOMEM; | |
3934 | #endif | |
3935 | ||
351df4b2 JK |
3936 | /* init SIT information */ |
3937 | sit_i->s_ops = &default_salloc_ops; | |
3938 | ||
3939 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
3940 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
c79b7ff1 | 3941 | sit_i->written_valid_blocks = 0; |
351df4b2 JK |
3942 | sit_i->bitmap_size = bitmap_size; |
3943 | sit_i->dirty_sentries = 0; | |
3944 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
3945 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
48fbfe50 | 3946 | sit_i->mounted_time = ktime_get_real_seconds(); |
3d26fa6b | 3947 | init_rwsem(&sit_i->sentry_lock); |
351df4b2 JK |
3948 | return 0; |
3949 | } | |
3950 | ||
3951 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
3952 | { | |
351df4b2 JK |
3953 | struct free_segmap_info *free_i; |
3954 | unsigned int bitmap_size, sec_bitmap_size; | |
3955 | ||
3956 | /* allocate memory for free segmap information */ | |
acbf054d | 3957 | free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL); |
351df4b2 JK |
3958 | if (!free_i) |
3959 | return -ENOMEM; | |
3960 | ||
3961 | SM_I(sbi)->free_info = free_i; | |
3962 | ||
7cd8558b | 3963 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 | 3964 | free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3965 | if (!free_i->free_segmap) |
3966 | return -ENOMEM; | |
3967 | ||
7cd8558b | 3968 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
628b3d14 | 3969 | free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
3970 | if (!free_i->free_secmap) |
3971 | return -ENOMEM; | |
3972 | ||
3973 | /* set all segments as dirty temporarily */ | |
3974 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
3975 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
3976 | ||
3977 | /* init free segmap information */ | |
7cd8558b | 3978 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
3979 | free_i->free_segments = 0; |
3980 | free_i->free_sections = 0; | |
1a118ccf | 3981 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
3982 | return 0; |
3983 | } | |
3984 | ||
3985 | static int build_curseg(struct f2fs_sb_info *sbi) | |
3986 | { | |
1042d60f | 3987 | struct curseg_info *array; |
351df4b2 JK |
3988 | int i; |
3989 | ||
026f0507 KC |
3990 | array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE, sizeof(*array)), |
3991 | GFP_KERNEL); | |
351df4b2 JK |
3992 | if (!array) |
3993 | return -ENOMEM; | |
3994 | ||
3995 | SM_I(sbi)->curseg_array = array; | |
3996 | ||
3997 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
3998 | mutex_init(&array[i].curseg_mutex); | |
acbf054d | 3999 | array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
4000 | if (!array[i].sum_blk) |
4001 | return -ENOMEM; | |
b7ad7512 | 4002 | init_rwsem(&array[i].journal_rwsem); |
acbf054d CY |
4003 | array[i].journal = f2fs_kzalloc(sbi, |
4004 | sizeof(struct f2fs_journal), GFP_KERNEL); | |
b7ad7512 CY |
4005 | if (!array[i].journal) |
4006 | return -ENOMEM; | |
351df4b2 JK |
4007 | array[i].segno = NULL_SEGNO; |
4008 | array[i].next_blkoff = 0; | |
4009 | } | |
4010 | return restore_curseg_summaries(sbi); | |
4011 | } | |
4012 | ||
c39a1b34 | 4013 | static int build_sit_entries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4014 | { |
4015 | struct sit_info *sit_i = SIT_I(sbi); | |
4016 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 4017 | struct f2fs_journal *journal = curseg->journal; |
9c094040 YH |
4018 | struct seg_entry *se; |
4019 | struct f2fs_sit_entry sit; | |
74de593a CY |
4020 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
4021 | unsigned int i, start, end; | |
4022 | unsigned int readed, start_blk = 0; | |
c39a1b34 | 4023 | int err = 0; |
8a29c126 | 4024 | block_t total_node_blocks = 0; |
351df4b2 | 4025 | |
74de593a | 4026 | do { |
4d57b86d | 4027 | readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
664ba972 | 4028 | META_SIT, true); |
74de593a CY |
4029 | |
4030 | start = start_blk * sit_i->sents_per_block; | |
4031 | end = (start_blk + readed) * sit_i->sents_per_block; | |
4032 | ||
7cd8558b | 4033 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 4034 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
4035 | struct page *page; |
4036 | ||
9c094040 | 4037 | se = &sit_i->sentries[start]; |
74de593a | 4038 | page = get_current_sit_page(sbi, start); |
edc55aaf JK |
4039 | if (IS_ERR(page)) |
4040 | return PTR_ERR(page); | |
74de593a CY |
4041 | sit_blk = (struct f2fs_sit_block *)page_address(page); |
4042 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
4043 | f2fs_put_page(page, 1); | |
d600af23 | 4044 | |
c39a1b34 JK |
4045 | err = check_block_count(sbi, start, &sit); |
4046 | if (err) | |
4047 | return err; | |
74de593a | 4048 | seg_info_from_raw_sit(se, &sit); |
8a29c126 JK |
4049 | if (IS_NODESEG(se->type)) |
4050 | total_node_blocks += se->valid_blocks; | |
a66cdd98 JK |
4051 | |
4052 | /* build discard map only one time */ | |
7d20c8ab CY |
4053 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
4054 | memset(se->discard_map, 0xff, | |
4055 | SIT_VBLOCK_MAP_SIZE); | |
4056 | } else { | |
4057 | memcpy(se->discard_map, | |
4058 | se->cur_valid_map, | |
4059 | SIT_VBLOCK_MAP_SIZE); | |
4060 | sbi->discard_blks += | |
4061 | sbi->blocks_per_seg - | |
4062 | se->valid_blocks; | |
3e025740 | 4063 | } |
a66cdd98 | 4064 | |
2c70c5e3 | 4065 | if (__is_large_section(sbi)) |
d600af23 CY |
4066 | get_sec_entry(sbi, start)->valid_blocks += |
4067 | se->valid_blocks; | |
351df4b2 | 4068 | } |
74de593a CY |
4069 | start_blk += readed; |
4070 | } while (start_blk < sit_blk_cnt); | |
d600af23 CY |
4071 | |
4072 | down_read(&curseg->journal_rwsem); | |
4073 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
d600af23 CY |
4074 | unsigned int old_valid_blocks; |
4075 | ||
4076 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
b2ca374f JK |
4077 | if (start >= MAIN_SEGS(sbi)) { |
4078 | f2fs_msg(sbi->sb, KERN_ERR, | |
4079 | "Wrong journal entry on segno %u", | |
4080 | start); | |
4081 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
4082 | err = -EINVAL; | |
4083 | break; | |
4084 | } | |
4085 | ||
d600af23 CY |
4086 | se = &sit_i->sentries[start]; |
4087 | sit = sit_in_journal(journal, i); | |
4088 | ||
4089 | old_valid_blocks = se->valid_blocks; | |
8a29c126 JK |
4090 | if (IS_NODESEG(se->type)) |
4091 | total_node_blocks -= old_valid_blocks; | |
d600af23 | 4092 | |
c39a1b34 JK |
4093 | err = check_block_count(sbi, start, &sit); |
4094 | if (err) | |
4095 | break; | |
d600af23 | 4096 | seg_info_from_raw_sit(se, &sit); |
8a29c126 JK |
4097 | if (IS_NODESEG(se->type)) |
4098 | total_node_blocks += se->valid_blocks; | |
d600af23 | 4099 | |
7d20c8ab CY |
4100 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
4101 | memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE); | |
4102 | } else { | |
4103 | memcpy(se->discard_map, se->cur_valid_map, | |
4104 | SIT_VBLOCK_MAP_SIZE); | |
4105 | sbi->discard_blks += old_valid_blocks; | |
4106 | sbi->discard_blks -= se->valid_blocks; | |
d600af23 CY |
4107 | } |
4108 | ||
2c70c5e3 | 4109 | if (__is_large_section(sbi)) { |
d600af23 | 4110 | get_sec_entry(sbi, start)->valid_blocks += |
a9af3fdc CY |
4111 | se->valid_blocks; |
4112 | get_sec_entry(sbi, start)->valid_blocks -= | |
4113 | old_valid_blocks; | |
4114 | } | |
d600af23 CY |
4115 | } |
4116 | up_read(&curseg->journal_rwsem); | |
8a29c126 JK |
4117 | |
4118 | if (!err && total_node_blocks != valid_node_count(sbi)) { | |
4119 | f2fs_msg(sbi->sb, KERN_ERR, | |
4120 | "SIT is corrupted node# %u vs %u", | |
4121 | total_node_blocks, valid_node_count(sbi)); | |
4122 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
4123 | err = -EINVAL; | |
4124 | } | |
4125 | ||
c39a1b34 | 4126 | return err; |
351df4b2 JK |
4127 | } |
4128 | ||
4129 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
4130 | { | |
4131 | unsigned int start; | |
4132 | int type; | |
4133 | ||
7cd8558b | 4134 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
4135 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
4136 | if (!sentry->valid_blocks) | |
4137 | __set_free(sbi, start); | |
c79b7ff1 JK |
4138 | else |
4139 | SIT_I(sbi)->written_valid_blocks += | |
4140 | sentry->valid_blocks; | |
351df4b2 JK |
4141 | } |
4142 | ||
4143 | /* set use the current segments */ | |
4144 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
4145 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
4146 | __set_test_and_inuse(sbi, curseg_t->segno); | |
4147 | } | |
4148 | } | |
4149 | ||
4150 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
4151 | { | |
4152 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4153 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 4154 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
4155 | unsigned short valid_blocks; |
4156 | ||
8736fbf0 | 4157 | while (1) { |
351df4b2 | 4158 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
4159 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
4160 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
4161 | break; |
4162 | offset = segno + 1; | |
302bd348 | 4163 | valid_blocks = get_valid_blocks(sbi, segno, false); |
ec325b52 | 4164 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 4165 | continue; |
ec325b52 JK |
4166 | if (valid_blocks > sbi->blocks_per_seg) { |
4167 | f2fs_bug_on(sbi, 1); | |
4168 | continue; | |
4169 | } | |
351df4b2 JK |
4170 | mutex_lock(&dirty_i->seglist_lock); |
4171 | __locate_dirty_segment(sbi, segno, DIRTY); | |
4172 | mutex_unlock(&dirty_i->seglist_lock); | |
4173 | } | |
4174 | } | |
4175 | ||
5ec4e49f | 4176 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4177 | { |
4178 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 4179 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 4180 | |
628b3d14 | 4181 | dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL); |
5ec4e49f | 4182 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
4183 | return -ENOMEM; |
4184 | return 0; | |
4185 | } | |
4186 | ||
4187 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
4188 | { | |
4189 | struct dirty_seglist_info *dirty_i; | |
4190 | unsigned int bitmap_size, i; | |
4191 | ||
4192 | /* allocate memory for dirty segments list information */ | |
acbf054d CY |
4193 | dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info), |
4194 | GFP_KERNEL); | |
351df4b2 JK |
4195 | if (!dirty_i) |
4196 | return -ENOMEM; | |
4197 | ||
4198 | SM_I(sbi)->dirty_info = dirty_i; | |
4199 | mutex_init(&dirty_i->seglist_lock); | |
4200 | ||
7cd8558b | 4201 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
4202 | |
4203 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
628b3d14 CY |
4204 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size, |
4205 | GFP_KERNEL); | |
351df4b2 JK |
4206 | if (!dirty_i->dirty_segmap[i]) |
4207 | return -ENOMEM; | |
4208 | } | |
4209 | ||
4210 | init_dirty_segmap(sbi); | |
5ec4e49f | 4211 | return init_victim_secmap(sbi); |
351df4b2 JK |
4212 | } |
4213 | ||
0a8165d7 | 4214 | /* |
351df4b2 JK |
4215 | * Update min, max modified time for cost-benefit GC algorithm |
4216 | */ | |
4217 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
4218 | { | |
4219 | struct sit_info *sit_i = SIT_I(sbi); | |
4220 | unsigned int segno; | |
4221 | ||
3d26fa6b | 4222 | down_write(&sit_i->sentry_lock); |
351df4b2 | 4223 | |
5ad25442 | 4224 | sit_i->min_mtime = ULLONG_MAX; |
351df4b2 | 4225 | |
7cd8558b | 4226 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
4227 | unsigned int i; |
4228 | unsigned long long mtime = 0; | |
4229 | ||
4230 | for (i = 0; i < sbi->segs_per_sec; i++) | |
4231 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
4232 | ||
4233 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
4234 | ||
4235 | if (sit_i->min_mtime > mtime) | |
4236 | sit_i->min_mtime = mtime; | |
4237 | } | |
a1f72ac2 | 4238 | sit_i->max_mtime = get_mtime(sbi, false); |
3d26fa6b | 4239 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
4240 | } |
4241 | ||
4d57b86d | 4242 | int f2fs_build_segment_manager(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4243 | { |
4244 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
4245 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 4246 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
4247 | int err; |
4248 | ||
acbf054d | 4249 | sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL); |
351df4b2 JK |
4250 | if (!sm_info) |
4251 | return -ENOMEM; | |
4252 | ||
4253 | /* init sm info */ | |
4254 | sbi->sm_info = sm_info; | |
351df4b2 JK |
4255 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
4256 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
4257 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
4258 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
4259 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
4260 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
4261 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
4262 | sm_info->rec_prefree_segments = sm_info->main_segments * |
4263 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
44a83499 JK |
4264 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
4265 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
4266 | ||
52763a4b JK |
4267 | if (!test_opt(sbi, LFS)) |
4268 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; | |
216fbd64 | 4269 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 4270 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
853137ce | 4271 | sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec; |
ef095d19 | 4272 | sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS; |
a2a12b67 | 4273 | sm_info->min_ssr_sections = reserved_sections(sbi); |
351df4b2 | 4274 | |
184a5cd2 CY |
4275 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
4276 | ||
2b60311d CY |
4277 | init_rwsem(&sm_info->curseg_lock); |
4278 | ||
d4fdf8ba | 4279 | if (!f2fs_readonly(sbi->sb)) { |
4d57b86d | 4280 | err = f2fs_create_flush_cmd_control(sbi); |
2163d198 | 4281 | if (err) |
a688b9d9 | 4282 | return err; |
6b4afdd7 JK |
4283 | } |
4284 | ||
0b54fb84 JK |
4285 | err = create_discard_cmd_control(sbi); |
4286 | if (err) | |
4287 | return err; | |
4288 | ||
351df4b2 JK |
4289 | err = build_sit_info(sbi); |
4290 | if (err) | |
4291 | return err; | |
4292 | err = build_free_segmap(sbi); | |
4293 | if (err) | |
4294 | return err; | |
4295 | err = build_curseg(sbi); | |
4296 | if (err) | |
4297 | return err; | |
4298 | ||
4299 | /* reinit free segmap based on SIT */ | |
c39a1b34 JK |
4300 | err = build_sit_entries(sbi); |
4301 | if (err) | |
4302 | return err; | |
351df4b2 JK |
4303 | |
4304 | init_free_segmap(sbi); | |
4305 | err = build_dirty_segmap(sbi); | |
4306 | if (err) | |
4307 | return err; | |
4308 | ||
4309 | init_min_max_mtime(sbi); | |
4310 | return 0; | |
4311 | } | |
4312 | ||
4313 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
4314 | enum dirty_type dirty_type) | |
4315 | { | |
4316 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4317 | ||
4318 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 4319 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
4320 | dirty_i->nr_dirty[dirty_type] = 0; |
4321 | mutex_unlock(&dirty_i->seglist_lock); | |
4322 | } | |
4323 | ||
5ec4e49f | 4324 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4325 | { |
4326 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 4327 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
4328 | } |
4329 | ||
4330 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
4331 | { | |
4332 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4333 | int i; | |
4334 | ||
4335 | if (!dirty_i) | |
4336 | return; | |
4337 | ||
4338 | /* discard pre-free/dirty segments list */ | |
4339 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
4340 | discard_dirty_segmap(sbi, i); | |
4341 | ||
5ec4e49f | 4342 | destroy_victim_secmap(sbi); |
351df4b2 | 4343 | SM_I(sbi)->dirty_info = NULL; |
5222595d | 4344 | kvfree(dirty_i); |
351df4b2 JK |
4345 | } |
4346 | ||
4347 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
4348 | { | |
4349 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
4350 | int i; | |
4351 | ||
4352 | if (!array) | |
4353 | return; | |
4354 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 4355 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
5222595d JK |
4356 | kvfree(array[i].sum_blk); |
4357 | kvfree(array[i].journal); | |
b7ad7512 | 4358 | } |
5222595d | 4359 | kvfree(array); |
351df4b2 JK |
4360 | } |
4361 | ||
4362 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
4363 | { | |
4364 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
4365 | if (!free_i) | |
4366 | return; | |
4367 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
4368 | kvfree(free_i->free_segmap); |
4369 | kvfree(free_i->free_secmap); | |
5222595d | 4370 | kvfree(free_i); |
351df4b2 JK |
4371 | } |
4372 | ||
4373 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
4374 | { | |
4375 | struct sit_info *sit_i = SIT_I(sbi); | |
4376 | unsigned int start; | |
4377 | ||
4378 | if (!sit_i) | |
4379 | return; | |
4380 | ||
4381 | if (sit_i->sentries) { | |
7cd8558b | 4382 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
5222595d | 4383 | kvfree(sit_i->sentries[start].cur_valid_map); |
355e7891 | 4384 | #ifdef CONFIG_F2FS_CHECK_FS |
5222595d | 4385 | kvfree(sit_i->sentries[start].cur_valid_map_mir); |
355e7891 | 4386 | #endif |
5222595d JK |
4387 | kvfree(sit_i->sentries[start].ckpt_valid_map); |
4388 | kvfree(sit_i->sentries[start].discard_map); | |
351df4b2 JK |
4389 | } |
4390 | } | |
5222595d | 4391 | kvfree(sit_i->tmp_map); |
60a3b782 | 4392 | |
39307a8e JK |
4393 | kvfree(sit_i->sentries); |
4394 | kvfree(sit_i->sec_entries); | |
4395 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
4396 | |
4397 | SM_I(sbi)->sit_info = NULL; | |
5222595d | 4398 | kvfree(sit_i->sit_bitmap); |
ae27d62e | 4399 | #ifdef CONFIG_F2FS_CHECK_FS |
5222595d | 4400 | kvfree(sit_i->sit_bitmap_mir); |
ae27d62e | 4401 | #endif |
5222595d | 4402 | kvfree(sit_i); |
351df4b2 JK |
4403 | } |
4404 | ||
4d57b86d | 4405 | void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4406 | { |
4407 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 4408 | |
3b03f724 CY |
4409 | if (!sm_info) |
4410 | return; | |
4d57b86d | 4411 | f2fs_destroy_flush_cmd_control(sbi, true); |
f099405f | 4412 | destroy_discard_cmd_control(sbi); |
351df4b2 JK |
4413 | destroy_dirty_segmap(sbi); |
4414 | destroy_curseg(sbi); | |
4415 | destroy_free_segmap(sbi); | |
4416 | destroy_sit_info(sbi); | |
4417 | sbi->sm_info = NULL; | |
5222595d | 4418 | kvfree(sm_info); |
351df4b2 | 4419 | } |
7fd9e544 | 4420 | |
4d57b86d | 4421 | int __init f2fs_create_segment_manager_caches(void) |
7fd9e544 JK |
4422 | { |
4423 | discard_entry_slab = f2fs_kmem_cache_create("discard_entry", | |
e8512d2e | 4424 | sizeof(struct discard_entry)); |
7fd9e544 | 4425 | if (!discard_entry_slab) |
184a5cd2 CY |
4426 | goto fail; |
4427 | ||
b01a9201 JK |
4428 | discard_cmd_slab = f2fs_kmem_cache_create("discard_cmd", |
4429 | sizeof(struct discard_cmd)); | |
4430 | if (!discard_cmd_slab) | |
6ab2a308 | 4431 | goto destroy_discard_entry; |
275b66b0 | 4432 | |
184a5cd2 | 4433 | sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", |
c9ee0085 | 4434 | sizeof(struct sit_entry_set)); |
184a5cd2 | 4435 | if (!sit_entry_set_slab) |
b01a9201 | 4436 | goto destroy_discard_cmd; |
88b88a66 JK |
4437 | |
4438 | inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", | |
4439 | sizeof(struct inmem_pages)); | |
4440 | if (!inmem_entry_slab) | |
4441 | goto destroy_sit_entry_set; | |
7fd9e544 | 4442 | return 0; |
184a5cd2 | 4443 | |
88b88a66 JK |
4444 | destroy_sit_entry_set: |
4445 | kmem_cache_destroy(sit_entry_set_slab); | |
b01a9201 JK |
4446 | destroy_discard_cmd: |
4447 | kmem_cache_destroy(discard_cmd_slab); | |
6ab2a308 | 4448 | destroy_discard_entry: |
184a5cd2 CY |
4449 | kmem_cache_destroy(discard_entry_slab); |
4450 | fail: | |
4451 | return -ENOMEM; | |
7fd9e544 JK |
4452 | } |
4453 | ||
4d57b86d | 4454 | void f2fs_destroy_segment_manager_caches(void) |
7fd9e544 | 4455 | { |
184a5cd2 | 4456 | kmem_cache_destroy(sit_entry_set_slab); |
b01a9201 | 4457 | kmem_cache_destroy(discard_cmd_slab); |
7fd9e544 | 4458 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 4459 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 4460 | } |