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Linux 5.9-rc2
[mirror_ubuntu-jammy-kernel.git] / fs / f2fs / node.c
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7c1a000d 1// SPDX-License-Identifier: GPL-2.0
0a8165d7 2/*
e05df3b1
JK		 3 * fs/f2fs/node.c
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
e05df3b1
JK		 7 */
8#include <linux/fs.h>
9#include <linux/f2fs_fs.h>
10#include <linux/mpage.h>
11#include <linux/backing-dev.h>
12#include <linux/blkdev.h>
13#include <linux/pagevec.h>
14#include <linux/swap.h>
15
16#include "f2fs.h"
17#include "node.h"
18#include "segment.h"
87905682 19#include "xattr.h"
9e4ded3f 20#include "trace.h"
51dd6249 21#include <trace/events/f2fs.h>
e05df3b1 22
4d57b86d 23#define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock)
f978f5a0 24
e05df3b1
JK		 25static struct kmem_cache *nat_entry_slab;
26static struct kmem_cache *free_nid_slab;
aec71382 27static struct kmem_cache *nat_entry_set_slab;
50fa53ec 28static struct kmem_cache *fsync_node_entry_slab;
e05df3b1 29
a4f843bd
JK		 30/*
31 * Check whether the given nid is within node id range.
32 */
4d57b86d 33int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
a4f843bd
JK		 34{
35 if (unlikely(nid < F2FS_ROOT_INO(sbi) || nid >= NM_I(sbi)->max_nid)) {
36 set_sbi_flag(sbi, SBI_NEED_FSCK);
dcbb4c10
JP		 37 f2fs_warn(sbi, "%s: out-of-range nid=%x, run fsck to fix.",
38 __func__, nid);
10f966bb 39 return -EFSCORRUPTED;
a4f843bd
JK		 40 }
41 return 0;
42}
43
4d57b86d 44bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type)
cdfc41c1 45{
6fb03f3a 46 struct f2fs_nm_info *nm_i = NM_I(sbi);
cdfc41c1 47 struct sysinfo val;
e5e7ea3c 48 unsigned long avail_ram;
cdfc41c1 49 unsigned long mem_size = 0;
6fb03f3a 50 bool res = false;
cdfc41c1
JK		 51
52 si_meminfo(&val);
e5e7ea3c
JK		 53
54 /* only uses low memory */
55 avail_ram = val.totalram - val.totalhigh;
56
429511cd
CY		 57 /*
58 * give 25%, 25%, 50%, 50%, 50% memory for each components respectively
59 */
6fb03f3a 60 if (type == FREE_NIDS) {
9a4ffdf5 61 mem_size = (nm_i->nid_cnt[FREE_NID] *
b8559dc2 62 sizeof(struct free_nid)) >> PAGE_SHIFT;
e5e7ea3c 63 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
6fb03f3a 64 } else if (type == NAT_ENTRIES) {
e5e7ea3c 65 mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >>
09cbfeaf 66 PAGE_SHIFT;
e5e7ea3c 67 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
e589c2c4
JK		 68 if (excess_cached_nats(sbi))
69 res = false;
a1257023
JK		 70 } else if (type == DIRTY_DENTS) {
71 if (sbi->sb->s_bdi->wb.dirty_exceeded)
72 return false;
73 mem_size = get_pages(sbi, F2FS_DIRTY_DENTS);
74 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
e5e7ea3c
JK		 75 } else if (type == INO_ENTRIES) {
76 int i;
77
39d787be 78 for (i = 0; i < MAX_INO_ENTRY; i++)
8f73cbb7
KM		 79 mem_size += sbi->im[i].ino_num *
80 sizeof(struct ino_entry);
81 mem_size >>= PAGE_SHIFT;
e5e7ea3c 82 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
429511cd 83 } else if (type == EXTENT_CACHE) {
7441ccef
JK		 84 mem_size = (atomic_read(&sbi->total_ext_tree) *
85 sizeof(struct extent_tree) +
429511cd 86 atomic_read(&sbi->total_ext_node) *
09cbfeaf 87 sizeof(struct extent_node)) >> PAGE_SHIFT;
429511cd 88 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
57864ae5
JK		 89 } else if (type == INMEM_PAGES) {
90 /* it allows 20% / total_ram for inmemory pages */
91 mem_size = get_pages(sbi, F2FS_INMEM_PAGES);
92 res = mem_size < (val.totalram / 5);
1e84371f 93 } else {
1663cae4
JK		 94 if (!sbi->sb->s_bdi->wb.dirty_exceeded)
95 return true;
6fb03f3a
JK		 96 }
97 return res;
cdfc41c1
JK		 98}
99
e05df3b1
JK		 100static void clear_node_page_dirty(struct page *page)
101{
e05df3b1 102 if (PageDirty(page)) {
5ec2d99d 103 f2fs_clear_page_cache_dirty_tag(page);
e05df3b1 104 clear_page_dirty_for_io(page);
aec2f729 105 dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
e05df3b1
JK		 106 }
107 ClearPageUptodate(page);
108}
109
110static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
111{
80551d17 112 return f2fs_get_meta_page_nofail(sbi, current_nat_addr(sbi, nid));
e05df3b1
JK		 113}
114
115static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
116{
117 struct page *src_page;
118 struct page *dst_page;
e05df3b1
JK		 119 pgoff_t dst_off;
120 void *src_addr;
121 void *dst_addr;
122 struct f2fs_nm_info *nm_i = NM_I(sbi);
123
80551d17 124 dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid));
e05df3b1
JK		 125
126 /* get current nat block page with lock */
80551d17 127 src_page = get_current_nat_page(sbi, nid);
edc55aaf
JK		 128 if (IS_ERR(src_page))
129 return src_page;
4d57b86d 130 dst_page = f2fs_grab_meta_page(sbi, dst_off);
9850cf4a 131 f2fs_bug_on(sbi, PageDirty(src_page));
e05df3b1
JK		 132
133 src_addr = page_address(src_page);
134 dst_addr = page_address(dst_page);
09cbfeaf 135 memcpy(dst_addr, src_addr, PAGE_SIZE);
e05df3b1
JK		 136 set_page_dirty(dst_page);
137 f2fs_put_page(src_page, 1);
138
139 set_to_next_nat(nm_i, nid);
140
141 return dst_page;
142}
143
12f9ef37
YH		 144static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail)
145{
146 struct nat_entry *new;
147
148 if (no_fail)
2882d343 149 new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO);
12f9ef37 150 else
2882d343 151 new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO);
12f9ef37
YH		 152 if (new) {
153 nat_set_nid(new, nid);
154 nat_reset_flag(new);
155 }
156 return new;
157}
158
159static void __free_nat_entry(struct nat_entry *e)
160{
161 kmem_cache_free(nat_entry_slab, e);
162}
163
164/* must be locked by nat_tree_lock */
165static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i,
166 struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail)
167{
168 if (no_fail)
169 f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne);
170 else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne))
171 return NULL;
172
173 if (raw_ne)
174 node_info_from_raw_nat(&ne->ni, raw_ne);
22969158
CY		 175
176 spin_lock(&nm_i->nat_list_lock);
12f9ef37 177 list_add_tail(&ne->list, &nm_i->nat_entries);
22969158
CY		 178 spin_unlock(&nm_i->nat_list_lock);
179
12f9ef37
YH		 180 nm_i->nat_cnt++;
181 return ne;
182}
183
e05df3b1
JK		 184static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n)
185{
22969158
CY		 186 struct nat_entry *ne;
187
188 ne = radix_tree_lookup(&nm_i->nat_root, n);
189
190 /* for recent accessed nat entry, move it to tail of lru list */
191 if (ne && !get_nat_flag(ne, IS_DIRTY)) {
192 spin_lock(&nm_i->nat_list_lock);
193 if (!list_empty(&ne->list))
194 list_move_tail(&ne->list, &nm_i->nat_entries);
195 spin_unlock(&nm_i->nat_list_lock);
196 }
197
198 return ne;
e05df3b1
JK		 199}
200
201static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i,
202 nid_t start, unsigned int nr, struct nat_entry **ep)
203{
204 return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr);
205}
206
207static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e)
208{
e05df3b1
JK		 209 radix_tree_delete(&nm_i->nat_root, nat_get_nid(e));
210 nm_i->nat_cnt--;
12f9ef37 211 __free_nat_entry(e);
e05df3b1
JK		 212}
213
780de47c
CY		 214static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i,
215 struct nat_entry *ne)
309cc2b6
JK		 216{
217 nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid);
218 struct nat_entry_set *head;
219
309cc2b6
JK		 220 head = radix_tree_lookup(&nm_i->nat_set_root, set);
221 if (!head) {
80c54505 222 head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS);
309cc2b6
JK		 223
224 INIT_LIST_HEAD(&head->entry_list);
225 INIT_LIST_HEAD(&head->set_list);
226 head->set = set;
227 head->entry_cnt = 0;
9be32d72 228 f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head);
309cc2b6 229 }
780de47c
CY		 230 return head;
231}
232
233static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i,
234 struct nat_entry *ne)
235{
236 struct nat_entry_set *head;
237 bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR;
238
239 if (!new_ne)
240 head = __grab_nat_entry_set(nm_i, ne);
241
242 /*
243 * update entry_cnt in below condition:
244 * 1. update NEW_ADDR to valid block address;
245 * 2. update old block address to new one;
246 */
247 if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) ||
248 !get_nat_flag(ne, IS_DIRTY)))
249 head->entry_cnt++;
250
251 set_nat_flag(ne, IS_PREALLOC, new_ne);
febeca6d
CY		 252
253 if (get_nat_flag(ne, IS_DIRTY))
254 goto refresh_list;
255
309cc2b6 256 nm_i->dirty_nat_cnt++;
309cc2b6 257 set_nat_flag(ne, IS_DIRTY, true);
febeca6d 258refresh_list:
22969158 259 spin_lock(&nm_i->nat_list_lock);
780de47c 260 if (new_ne)
febeca6d
CY		 261 list_del_init(&ne->list);
262 else
263 list_move_tail(&ne->list, &head->entry_list);
22969158 264 spin_unlock(&nm_i->nat_list_lock);
309cc2b6
JK		 265}
266
267static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i,
0b28b71e 268 struct nat_entry_set *set, struct nat_entry *ne)
309cc2b6 269{
22969158 270 spin_lock(&nm_i->nat_list_lock);
0b28b71e 271 list_move_tail(&ne->list, &nm_i->nat_entries);
22969158
CY		 272 spin_unlock(&nm_i->nat_list_lock);
273
0b28b71e
KM		 274 set_nat_flag(ne, IS_DIRTY, false);
275 set->entry_cnt--;
276 nm_i->dirty_nat_cnt--;
309cc2b6
JK		 277}
278
279static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i,
280 nid_t start, unsigned int nr, struct nat_entry_set **ep)
281{
282 return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep,
283 start, nr);
284}
285
50fa53ec
CY		 286bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page)
287{
288 return NODE_MAPPING(sbi) == page->mapping &&
289 IS_DNODE(page) && is_cold_node(page);
290}
291
292void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi)
293{
294 spin_lock_init(&sbi->fsync_node_lock);
295 INIT_LIST_HEAD(&sbi->fsync_node_list);
296 sbi->fsync_seg_id = 0;
297 sbi->fsync_node_num = 0;
298}
299
300static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi,
301 struct page *page)
302{
303 struct fsync_node_entry *fn;
304 unsigned long flags;
305 unsigned int seq_id;
306
307 fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, GFP_NOFS);
308
309 get_page(page);
310 fn->page = page;
311 INIT_LIST_HEAD(&fn->list);
312
313 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
314 list_add_tail(&fn->list, &sbi->fsync_node_list);
315 fn->seq_id = sbi->fsync_seg_id++;
316 seq_id = fn->seq_id;
317 sbi->fsync_node_num++;
318 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
319
320 return seq_id;
321}
322
323void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page)
324{
325 struct fsync_node_entry *fn;
326 unsigned long flags;
327
328 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
329 list_for_each_entry(fn, &sbi->fsync_node_list, list) {
330 if (fn->page == page) {
331 list_del(&fn->list);
332 sbi->fsync_node_num--;
333 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
334 kmem_cache_free(fsync_node_entry_slab, fn);
335 put_page(page);
336 return;
337 }
338 }
339 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
340 f2fs_bug_on(sbi, 1);
341}
342
343void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi)
344{
345 unsigned long flags;
346
347 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
348 sbi->fsync_seg_id = 0;
349 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
350}
351
4d57b86d 352int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1
JK		 353{
354 struct f2fs_nm_info *nm_i = NM_I(sbi);
355 struct nat_entry *e;
2dcf51ab 356 bool need = false;
e05df3b1 357
b873b798 358 down_read(&nm_i->nat_tree_lock);
e05df3b1 359 e = __lookup_nat_cache(nm_i, nid);
2dcf51ab
JK		 360 if (e) {
361 if (!get_nat_flag(e, IS_CHECKPOINTED) &&
362 !get_nat_flag(e, HAS_FSYNCED_INODE))
363 need = true;
364 }
b873b798 365 up_read(&nm_i->nat_tree_lock);
2dcf51ab 366 return need;
e05df3b1
JK		 367}
368
4d57b86d 369bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
479f40c4
JK		 370{
371 struct f2fs_nm_info *nm_i = NM_I(sbi);
372 struct nat_entry *e;
2dcf51ab 373 bool is_cp = true;
479f40c4 374
b873b798 375 down_read(&nm_i->nat_tree_lock);
2dcf51ab
JK		 376 e = __lookup_nat_cache(nm_i, nid);
377 if (e && !get_nat_flag(e, IS_CHECKPOINTED))
378 is_cp = false;
b873b798 379 up_read(&nm_i->nat_tree_lock);
2dcf51ab 380 return is_cp;
479f40c4
JK		 381}
382
4d57b86d 383bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino)
b6fe5873
JK		 384{
385 struct f2fs_nm_info *nm_i = NM_I(sbi);
386 struct nat_entry *e;
88bd02c9 387 bool need_update = true;
b6fe5873 388
b873b798 389 down_read(&nm_i->nat_tree_lock);
88bd02c9
JK		 390 e = __lookup_nat_cache(nm_i, ino);
391 if (e && get_nat_flag(e, HAS_LAST_FSYNC) &&
392 (get_nat_flag(e, IS_CHECKPOINTED) ||
393 get_nat_flag(e, HAS_FSYNCED_INODE)))
394 need_update = false;
b873b798 395 up_read(&nm_i->nat_tree_lock);
88bd02c9 396 return need_update;
b6fe5873
JK		 397}
398
12f9ef37 399/* must be locked by nat_tree_lock */
1515aef0 400static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid,
e05df3b1
JK		 401 struct f2fs_nat_entry *ne)
402{
1515aef0 403 struct f2fs_nm_info *nm_i = NM_I(sbi);
12f9ef37 404 struct nat_entry *new, *e;
9be32d72 405
12f9ef37
YH		 406 new = __alloc_nat_entry(nid, false);
407 if (!new)
408 return;
409
410 down_write(&nm_i->nat_tree_lock);
e05df3b1 411 e = __lookup_nat_cache(nm_i, nid);
12f9ef37
YH		 412 if (!e)
413 e = __init_nat_entry(nm_i, new, ne, false);
414 else
0c0b471e
EB		 415 f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) ||
416 nat_get_blkaddr(e) !=
417 le32_to_cpu(ne->block_addr) ||
1515aef0 418 nat_get_version(e) != ne->version);
12f9ef37
YH		 419 up_write(&nm_i->nat_tree_lock);
420 if (e != new)
421 __free_nat_entry(new);
e05df3b1
JK		 422}
423
424static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
479f40c4 425 block_t new_blkaddr, bool fsync_done)
e05df3b1
JK		 426{
427 struct f2fs_nm_info *nm_i = NM_I(sbi);
428 struct nat_entry *e;
12f9ef37 429 struct nat_entry *new = __alloc_nat_entry(ni->nid, true);
9be32d72 430
b873b798 431 down_write(&nm_i->nat_tree_lock);
e05df3b1
JK		 432 e = __lookup_nat_cache(nm_i, ni->nid);
433 if (!e) {
12f9ef37 434 e = __init_nat_entry(nm_i, new, NULL, true);
5c27f4ee 435 copy_node_info(&e->ni, ni);
9850cf4a 436 f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR);
e05df3b1
JK		 437 } else if (new_blkaddr == NEW_ADDR) {
438 /*
439 * when nid is reallocated,
440 * previous nat entry can be remained in nat cache.
441 * So, reinitialize it with new information.
442 */
5c27f4ee 443 copy_node_info(&e->ni, ni);
9850cf4a 444 f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR);
e05df3b1 445 }
12f9ef37
YH		 446 /* let's free early to reduce memory consumption */
447 if (e != new)
448 __free_nat_entry(new);
e05df3b1 449
e05df3b1 450 /* sanity check */
9850cf4a
JK		 451 f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr);
452 f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR &&
e05df3b1 453 new_blkaddr == NULL_ADDR);
9850cf4a 454 f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR &&
e05df3b1 455 new_blkaddr == NEW_ADDR);
93770ab7 456 f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) &&
e05df3b1
JK		 457 new_blkaddr == NEW_ADDR);
458
e1c42045 459 /* increment version no as node is removed */
e05df3b1
JK		 460 if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) {
461 unsigned char version = nat_get_version(e);
462 nat_set_version(e, inc_node_version(version));
463 }
464
465 /* change address */
466 nat_set_blkaddr(e, new_blkaddr);
93770ab7 467 if (!__is_valid_data_blkaddr(new_blkaddr))
88bd02c9 468 set_nat_flag(e, IS_CHECKPOINTED, false);
e05df3b1 469 __set_nat_cache_dirty(nm_i, e);
479f40c4
JK		 470
471 /* update fsync_mark if its inode nat entry is still alive */
d5b692b7
CY		 472 if (ni->nid != ni->ino)
473 e = __lookup_nat_cache(nm_i, ni->ino);
88bd02c9
JK		 474 if (e) {
475 if (fsync_done && ni->nid == ni->ino)
476 set_nat_flag(e, HAS_FSYNCED_INODE, true);
477 set_nat_flag(e, HAS_LAST_FSYNC, fsync_done);
478 }
b873b798 479 up_write(&nm_i->nat_tree_lock);
e05df3b1
JK		 480}
481
4d57b86d 482int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
e05df3b1
JK		 483{
484 struct f2fs_nm_info *nm_i = NM_I(sbi);
1b38dc8e 485 int nr = nr_shrink;
e05df3b1 486
b873b798
JK		 487 if (!down_write_trylock(&nm_i->nat_tree_lock))
488 return 0;
e05df3b1 489
22969158
CY		 490 spin_lock(&nm_i->nat_list_lock);
491 while (nr_shrink) {
e05df3b1 492 struct nat_entry *ne;
22969158
CY		 493
494 if (list_empty(&nm_i->nat_entries))
495 break;
496
e05df3b1
JK		 497 ne = list_first_entry(&nm_i->nat_entries,
498 struct nat_entry, list);
22969158
CY		 499 list_del(&ne->list);
500 spin_unlock(&nm_i->nat_list_lock);
501
e05df3b1
JK		 502 __del_from_nat_cache(nm_i, ne);
503 nr_shrink--;
22969158
CY		 504
505 spin_lock(&nm_i->nat_list_lock);
e05df3b1 506 }
22969158
CY		 507 spin_unlock(&nm_i->nat_list_lock);
508
b873b798 509 up_write(&nm_i->nat_tree_lock);
1b38dc8e 510 return nr - nr_shrink;
e05df3b1
JK		 511}
512
7735730d 513int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
4d57b86d 514 struct node_info *ni)
e05df3b1
JK		 515{
516 struct f2fs_nm_info *nm_i = NM_I(sbi);
517 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 518 struct f2fs_journal *journal = curseg->journal;
e05df3b1
JK		 519 nid_t start_nid = START_NID(nid);
520 struct f2fs_nat_block *nat_blk;
521 struct page *page = NULL;
522 struct f2fs_nat_entry ne;
523 struct nat_entry *e;
66a82d1f 524 pgoff_t index;
93770ab7 525 block_t blkaddr;
e05df3b1
JK		 526 int i;
527
528 ni->nid = nid;
529
530 /* Check nat cache */
b873b798 531 down_read(&nm_i->nat_tree_lock);
e05df3b1
JK		 532 e = __lookup_nat_cache(nm_i, nid);
533 if (e) {
534 ni->ino = nat_get_ino(e);
535 ni->blk_addr = nat_get_blkaddr(e);
536 ni->version = nat_get_version(e);
b873b798 537 up_read(&nm_i->nat_tree_lock);
7735730d 538 return 0;
1515aef0 539 }
e05df3b1 540
3547ea96
JK		 541 memset(&ne, 0, sizeof(struct f2fs_nat_entry));
542
e05df3b1 543 /* Check current segment summary */
b7ad7512 544 down_read(&curseg->journal_rwsem);
4d57b86d 545 i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0);
e05df3b1 546 if (i >= 0) {
dfc08a12 547 ne = nat_in_journal(journal, i);
e05df3b1
JK		 548 node_info_from_raw_nat(ni, &ne);
549 }
b7ad7512 550 up_read(&curseg->journal_rwsem);
66a82d1f
YH		 551 if (i >= 0) {
552 up_read(&nm_i->nat_tree_lock);
e05df3b1 553 goto cache;
66a82d1f 554 }
e05df3b1
JK		 555
556 /* Fill node_info from nat page */
66a82d1f
YH		 557 index = current_nat_addr(sbi, nid);
558 up_read(&nm_i->nat_tree_lock);
559
4d57b86d 560 page = f2fs_get_meta_page(sbi, index);
7735730d
CY		 561 if (IS_ERR(page))
562 return PTR_ERR(page);
563
e05df3b1
JK		 564 nat_blk = (struct f2fs_nat_block *)page_address(page);
565 ne = nat_blk->entries[nid - start_nid];
566 node_info_from_raw_nat(ni, &ne);
567 f2fs_put_page(page, 1);
568cache:
93770ab7
CY		 569 blkaddr = le32_to_cpu(ne.block_addr);
570 if (__is_valid_data_blkaddr(blkaddr) &&
571 !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE))
572 return -EFAULT;
573
e05df3b1 574 /* cache nat entry */
1515aef0 575 cache_nat_entry(sbi, nid, &ne);
7735730d 576 return 0;
e05df3b1
JK		 577}
578
79344efb
JK		 579/*
580 * readahead MAX_RA_NODE number of node pages.
581 */
4d57b86d 582static void f2fs_ra_node_pages(struct page *parent, int start, int n)
79344efb
JK		 583{
584 struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
585 struct blk_plug plug;
586 int i, end;
587 nid_t nid;
588
589 blk_start_plug(&plug);
590
591 /* Then, try readahead for siblings of the desired node */
592 end = start + n;
593 end = min(end, NIDS_PER_BLOCK);
594 for (i = start; i < end; i++) {
595 nid = get_nid(parent, i, false);
4d57b86d 596 f2fs_ra_node_page(sbi, nid);
79344efb
JK		 597 }
598
599 blk_finish_plug(&plug);
600}
601
4d57b86d 602pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs)
3cf45747
CY		 603{
604 const long direct_index = ADDRS_PER_INODE(dn->inode);
d02a6e61
CY		 605 const long direct_blks = ADDRS_PER_BLOCK(dn->inode);
606 const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK;
607 unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode);
3cf45747
CY		 608 int cur_level = dn->cur_level;
609 int max_level = dn->max_level;
610 pgoff_t base = 0;
611
612 if (!dn->max_level)
613 return pgofs + 1;
614
615 while (max_level-- > cur_level)
616 skipped_unit *= NIDS_PER_BLOCK;
617
618 switch (dn->max_level) {
619 case 3:
620 base += 2 * indirect_blks;
0a4c9265 621 /* fall through */
3cf45747
CY		 622 case 2:
623 base += 2 * direct_blks;
0a4c9265 624 /* fall through */
3cf45747
CY		 625 case 1:
626 base += direct_index;
627 break;
628 default:
629 f2fs_bug_on(F2FS_I_SB(dn->inode), 1);
630 }
631
632 return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base;
633}
634
0a8165d7 635/*
e05df3b1
JK		 636 * The maximum depth is four.
637 * Offset[0] will have raw inode offset.
638 */
81ca7350 639static int get_node_path(struct inode *inode, long block,
de93653f 640 int offset[4], unsigned int noffset[4])
e05df3b1 641{
81ca7350 642 const long direct_index = ADDRS_PER_INODE(inode);
d02a6e61 643 const long direct_blks = ADDRS_PER_BLOCK(inode);
e05df3b1 644 const long dptrs_per_blk = NIDS_PER_BLOCK;
d02a6e61 645 const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK;
e05df3b1
JK		 646 const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK;
647 int n = 0;
648 int level = 0;
649
650 noffset[0] = 0;
651
652 if (block < direct_index) {
25c0a6e5 653 offset[n] = block;
e05df3b1
JK		 654 goto got;
655 }
656 block -= direct_index;
657 if (block < direct_blks) {
658 offset[n++] = NODE_DIR1_BLOCK;
659 noffset[n] = 1;
25c0a6e5 660 offset[n] = block;
e05df3b1
JK		 661 level = 1;
662 goto got;
663 }
664 block -= direct_blks;
665 if (block < direct_blks) {
666 offset[n++] = NODE_DIR2_BLOCK;
667 noffset[n] = 2;
25c0a6e5 668 offset[n] = block;
e05df3b1
JK		 669 level = 1;
670 goto got;
671 }
672 block -= direct_blks;
673 if (block < indirect_blks) {
674 offset[n++] = NODE_IND1_BLOCK;
675 noffset[n] = 3;
676 offset[n++] = block / direct_blks;
677 noffset[n] = 4 + offset[n - 1];
25c0a6e5 678 offset[n] = block % direct_blks;
e05df3b1
JK		 679 level = 2;
680 goto got;
681 }
682 block -= indirect_blks;
683 if (block < indirect_blks) {
684 offset[n++] = NODE_IND2_BLOCK;
685 noffset[n] = 4 + dptrs_per_blk;
686 offset[n++] = block / direct_blks;
687 noffset[n] = 5 + dptrs_per_blk + offset[n - 1];
25c0a6e5 688 offset[n] = block % direct_blks;
e05df3b1
JK		 689 level = 2;
690 goto got;
691 }
692 block -= indirect_blks;
693 if (block < dindirect_blks) {
694 offset[n++] = NODE_DIND_BLOCK;
695 noffset[n] = 5 + (dptrs_per_blk * 2);
696 offset[n++] = block / indirect_blks;
697 noffset[n] = 6 + (dptrs_per_blk * 2) +
698 offset[n - 1] * (dptrs_per_blk + 1);
699 offset[n++] = (block / direct_blks) % dptrs_per_blk;
700 noffset[n] = 7 + (dptrs_per_blk * 2) +
701 offset[n - 2] * (dptrs_per_blk + 1) +
702 offset[n - 1];
25c0a6e5 703 offset[n] = block % direct_blks;
e05df3b1
JK		 704 level = 3;
705 goto got;
706 } else {
adb6dc19 707 return -E2BIG;
e05df3b1
JK		 708 }
709got:
710 return level;
711}
712
713/*
714 * Caller should call f2fs_put_dnode(dn).
4f4124d0 715 * Also, it should grab and release a rwsem by calling f2fs_lock_op() and
7a88ddb5 716 * f2fs_unlock_op() only if mode is set with ALLOC_NODE.
e05df3b1 717 */
4d57b86d 718int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
e05df3b1 719{
4081363f 720 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
e05df3b1 721 struct page *npage[4];
f1a3b98e 722 struct page *parent = NULL;
e05df3b1
JK		 723 int offset[4];
724 unsigned int noffset[4];
725 nid_t nids[4];
3cf45747 726 int level, i = 0;
e05df3b1
JK		 727 int err = 0;
728
81ca7350 729 level = get_node_path(dn->inode, index, offset, noffset);
adb6dc19
JK		 730 if (level < 0)
731 return level;
e05df3b1
JK		 732
733 nids[0] = dn->inode->i_ino;
1646cfac 734 npage[0] = dn->inode_page;
e05df3b1 735
1646cfac 736 if (!npage[0]) {
4d57b86d 737 npage[0] = f2fs_get_node_page(sbi, nids[0]);
1646cfac
JK		 738 if (IS_ERR(npage[0]))
739 return PTR_ERR(npage[0]);
740 }
f1a3b98e
JK		 741
742 /* if inline_data is set, should not report any block indices */
743 if (f2fs_has_inline_data(dn->inode) && index) {
76629165 744 err = -ENOENT;
f1a3b98e
JK		 745 f2fs_put_page(npage[0], 1);
746 goto release_out;
747 }
748
e05df3b1 749 parent = npage[0];
52c2db3f
CL		 750 if (level != 0)
751 nids[1] = get_nid(parent, offset[0], true);
e05df3b1
JK		 752 dn->inode_page = npage[0];
753 dn->inode_page_locked = true;
754
755 /* get indirect or direct nodes */
756 for (i = 1; i <= level; i++) {
757 bool done = false;
758
266e97a8 759 if (!nids[i] && mode == ALLOC_NODE) {
e05df3b1 760 /* alloc new node */
4d57b86d 761 if (!f2fs_alloc_nid(sbi, &(nids[i]))) {
e05df3b1
JK		 762 err = -ENOSPC;
763 goto release_pages;
764 }
765
766 dn->nid = nids[i];
4d57b86d 767 npage[i] = f2fs_new_node_page(dn, noffset[i]);
e05df3b1 768 if (IS_ERR(npage[i])) {
4d57b86d 769 f2fs_alloc_nid_failed(sbi, nids[i]);
e05df3b1
JK		 770 err = PTR_ERR(npage[i]);
771 goto release_pages;
772 }
773
774 set_nid(parent, offset[i - 1], nids[i], i == 1);
4d57b86d 775 f2fs_alloc_nid_done(sbi, nids[i]);
e05df3b1 776 done = true;
266e97a8 777 } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) {
4d57b86d 778 npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]);
e05df3b1
JK		 779 if (IS_ERR(npage[i])) {
780 err = PTR_ERR(npage[i]);
781 goto release_pages;
782 }
783 done = true;
784 }
785 if (i == 1) {
786 dn->inode_page_locked = false;
787 unlock_page(parent);
788 } else {
789 f2fs_put_page(parent, 1);
790 }
791
792 if (!done) {
4d57b86d 793 npage[i] = f2fs_get_node_page(sbi, nids[i]);
e05df3b1
JK		 794 if (IS_ERR(npage[i])) {
795 err = PTR_ERR(npage[i]);
796 f2fs_put_page(npage[0], 0);
797 goto release_out;
798 }
799 }
800 if (i < level) {
801 parent = npage[i];
802 nids[i + 1] = get_nid(parent, offset[i], false);
803 }
804 }
805 dn->nid = nids[level];
806 dn->ofs_in_node = offset[level];
807 dn->node_page = npage[level];
a2ced1ce 808 dn->data_blkaddr = f2fs_data_blkaddr(dn);
e05df3b1
JK		 809 return 0;
810
811release_pages:
812 f2fs_put_page(parent, 1);
813 if (i > 1)
814 f2fs_put_page(npage[0], 0);
815release_out:
816 dn->inode_page = NULL;
817 dn->node_page = NULL;
3cf45747
CY		 818 if (err == -ENOENT) {
819 dn->cur_level = i;
820 dn->max_level = level;
0a2aa8fb 821 dn->ofs_in_node = offset[level];
3cf45747 822 }
e05df3b1
JK		 823 return err;
824}
825
7735730d 826static int truncate_node(struct dnode_of_data *dn)
e05df3b1 827{
4081363f 828 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
e05df3b1 829 struct node_info ni;
7735730d 830 int err;
0ea295dd 831 pgoff_t index;
e05df3b1 832
7735730d
CY		 833 err = f2fs_get_node_info(sbi, dn->nid, &ni);
834 if (err)
835 return err;
e05df3b1 836
e05df3b1 837 /* Deallocate node address */
4d57b86d 838 f2fs_invalidate_blocks(sbi, ni.blk_addr);
000519f2 839 dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino);
479f40c4 840 set_node_addr(sbi, &ni, NULL_ADDR, false);
e05df3b1
JK		 841
842 if (dn->nid == dn->inode->i_ino) {
4d57b86d 843 f2fs_remove_orphan_inode(sbi, dn->nid);
e05df3b1 844 dec_valid_inode_count(sbi);
0f18b462 845 f2fs_inode_synced(dn->inode);
e05df3b1 846 }
000519f2 847
e05df3b1 848 clear_node_page_dirty(dn->node_page);
caf0047e 849 set_sbi_flag(sbi, SBI_IS_DIRTY);
e05df3b1 850
0ea295dd 851 index = dn->node_page->index;
e05df3b1 852 f2fs_put_page(dn->node_page, 1);
bf39c00a
JK		 853
854 invalidate_mapping_pages(NODE_MAPPING(sbi),
0ea295dd 855 index, index);
bf39c00a 856
e05df3b1 857 dn->node_page = NULL;
51dd6249 858 trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
7735730d
CY		 859
860 return 0;
e05df3b1
JK		 861}
862
863static int truncate_dnode(struct dnode_of_data *dn)
864{
e05df3b1 865 struct page *page;
7735730d 866 int err;
e05df3b1
JK		 867
868 if (dn->nid == 0)
869 return 1;
870
871 /* get direct node */
4d57b86d 872 page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
45586c70 873 if (PTR_ERR(page) == -ENOENT)
e05df3b1
JK		 874 return 1;
875 else if (IS_ERR(page))
876 return PTR_ERR(page);
877
878 /* Make dnode_of_data for parameter */
879 dn->node_page = page;
880 dn->ofs_in_node = 0;
4d57b86d 881 f2fs_truncate_data_blocks(dn);
7735730d
CY		 882 err = truncate_node(dn);
883 if (err)
884 return err;
885
e05df3b1
JK		 886 return 1;
887}
888
889static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
890 int ofs, int depth)
891{
e05df3b1
JK		 892 struct dnode_of_data rdn = *dn;
893 struct page *page;
894 struct f2fs_node *rn;
895 nid_t child_nid;
896 unsigned int child_nofs;
897 int freed = 0;
898 int i, ret;
899
900 if (dn->nid == 0)
901 return NIDS_PER_BLOCK + 1;
902
51dd6249
NJ		 903 trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
904
4d57b86d 905 page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
51dd6249
NJ		 906 if (IS_ERR(page)) {
907 trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
e05df3b1 908 return PTR_ERR(page);
51dd6249 909 }
e05df3b1 910
4d57b86d 911 f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK);
79344efb 912
45590710 913 rn = F2FS_NODE(page);
e05df3b1
JK		 914 if (depth < 3) {
915 for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) {
916 child_nid = le32_to_cpu(rn->in.nid[i]);
917 if (child_nid == 0)
918 continue;
919 rdn.nid = child_nid;
920 ret = truncate_dnode(&rdn);
921 if (ret < 0)
922 goto out_err;
12719ae1
JK		 923 if (set_nid(page, i, 0, false))
924 dn->node_changed = true;
e05df3b1
JK		 925 }
926 } else {
927 child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1;
928 for (i = ofs; i < NIDS_PER_BLOCK; i++) {
929 child_nid = le32_to_cpu(rn->in.nid[i]);
930 if (child_nid == 0) {
931 child_nofs += NIDS_PER_BLOCK + 1;
932 continue;
933 }
934 rdn.nid = child_nid;
935 ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1);
936 if (ret == (NIDS_PER_BLOCK + 1)) {
12719ae1
JK		 937 if (set_nid(page, i, 0, false))
938 dn->node_changed = true;
e05df3b1
JK		 939 child_nofs += ret;
940 } else if (ret < 0 && ret != -ENOENT) {
941 goto out_err;
942 }
943 }
944 freed = child_nofs;
945 }
946
947 if (!ofs) {
948 /* remove current indirect node */
949 dn->node_page = page;
7735730d
CY		 950 ret = truncate_node(dn);
951 if (ret)
952 goto out_err;
e05df3b1
JK		 953 freed++;
954 } else {
955 f2fs_put_page(page, 1);
956 }
51dd6249 957 trace_f2fs_truncate_nodes_exit(dn->inode, freed);
e05df3b1
JK		 958 return freed;
959
960out_err:
961 f2fs_put_page(page, 1);
51dd6249 962 trace_f2fs_truncate_nodes_exit(dn->inode, ret);
e05df3b1
JK		 963 return ret;
964}
965
966static int truncate_partial_nodes(struct dnode_of_data *dn,
967 struct f2fs_inode *ri, int *offset, int depth)
968{
e05df3b1
JK		 969 struct page *pages[2];
970 nid_t nid[3];
971 nid_t child_nid;
972 int err = 0;
973 int i;
974 int idx = depth - 2;
975
976 nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
977 if (!nid[0])
978 return 0;
979
980 /* get indirect nodes in the path */
a225dca3 981 for (i = 0; i < idx + 1; i++) {
e1c42045 982 /* reference count'll be increased */
4d57b86d 983 pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]);
e05df3b1 984 if (IS_ERR(pages[i])) {
e05df3b1 985 err = PTR_ERR(pages[i]);
a225dca3 986 idx = i - 1;
e05df3b1
JK		 987 goto fail;
988 }
989 nid[i + 1] = get_nid(pages[i], offset[i + 1], false);
990 }
991
4d57b86d 992 f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK);
79344efb 993
e05df3b1 994 /* free direct nodes linked to a partial indirect node */
a225dca3 995 for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) {
e05df3b1
JK		 996 child_nid = get_nid(pages[idx], i, false);
997 if (!child_nid)
998 continue;
999 dn->nid = child_nid;
1000 err = truncate_dnode(dn);
1001 if (err < 0)
1002 goto fail;
12719ae1
JK		 1003 if (set_nid(pages[idx], i, 0, false))
1004 dn->node_changed = true;
e05df3b1
JK		 1005 }
1006
a225dca3 1007 if (offset[idx + 1] == 0) {
e05df3b1
JK		 1008 dn->node_page = pages[idx];
1009 dn->nid = nid[idx];
7735730d
CY		 1010 err = truncate_node(dn);
1011 if (err)
1012 goto fail;
e05df3b1
JK		 1013 } else {
1014 f2fs_put_page(pages[idx], 1);
1015 }
1016 offset[idx]++;
a225dca3 1017 offset[idx + 1] = 0;
1018 idx--;
e05df3b1 1019fail:
a225dca3 1020 for (i = idx; i >= 0; i--)
e05df3b1 1021 f2fs_put_page(pages[i], 1);
51dd6249
NJ		 1022
1023 trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
1024
e05df3b1
JK		 1025 return err;
1026}
1027
0a8165d7 1028/*
e05df3b1
JK		 1029 * All the block addresses of data and nodes should be nullified.
1030 */
4d57b86d 1031int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
e05df3b1 1032{
4081363f 1033 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
e05df3b1
JK		 1034 int err = 0, cont = 1;
1035 int level, offset[4], noffset[4];
7dd690c8 1036 unsigned int nofs = 0;
58bfaf44 1037 struct f2fs_inode *ri;
e05df3b1
JK		 1038 struct dnode_of_data dn;
1039 struct page *page;
1040
51dd6249
NJ		 1041 trace_f2fs_truncate_inode_blocks_enter(inode, from);
1042
81ca7350 1043 level = get_node_path(inode, from, offset, noffset);
9039d835
YF		 1044 if (level < 0) {
1045 trace_f2fs_truncate_inode_blocks_exit(inode, level);
adb6dc19 1046 return level;
9039d835 1047 }
ff373558 1048
4d57b86d 1049 page = f2fs_get_node_page(sbi, inode->i_ino);
51dd6249
NJ		 1050 if (IS_ERR(page)) {
1051 trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
e05df3b1 1052 return PTR_ERR(page);
51dd6249 1053 }
e05df3b1
JK		 1054
1055 set_new_dnode(&dn, inode, page, NULL, 0);
1056 unlock_page(page);
1057
58bfaf44 1058 ri = F2FS_INODE(page);
e05df3b1
JK		 1059 switch (level) {
1060 case 0:
1061 case 1:
1062 nofs = noffset[1];
1063 break;
1064 case 2:
1065 nofs = noffset[1];
1066 if (!offset[level - 1])
1067 goto skip_partial;
58bfaf44 1068 err = truncate_partial_nodes(&dn, ri, offset, level);
e05df3b1
JK		 1069 if (err < 0 && err != -ENOENT)
1070 goto fail;
1071 nofs += 1 + NIDS_PER_BLOCK;
1072 break;
1073 case 3:
1074 nofs = 5 + 2 * NIDS_PER_BLOCK;
1075 if (!offset[level - 1])
1076 goto skip_partial;
58bfaf44 1077 err = truncate_partial_nodes(&dn, ri, offset, level);
e05df3b1
JK		 1078 if (err < 0 && err != -ENOENT)
1079 goto fail;
1080 break;
1081 default:
1082 BUG();
1083 }
1084
1085skip_partial:
1086 while (cont) {
58bfaf44 1087 dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
e05df3b1
JK		 1088 switch (offset[0]) {
1089 case NODE_DIR1_BLOCK:
1090 case NODE_DIR2_BLOCK:
1091 err = truncate_dnode(&dn);
1092 break;
1093
1094 case NODE_IND1_BLOCK:
1095 case NODE_IND2_BLOCK:
1096 err = truncate_nodes(&dn, nofs, offset[1], 2);
1097 break;
1098
1099 case NODE_DIND_BLOCK:
1100 err = truncate_nodes(&dn, nofs, offset[1], 3);
1101 cont = 0;
1102 break;
1103
1104 default:
1105 BUG();
1106 }
1107 if (err < 0 && err != -ENOENT)
1108 goto fail;
1109 if (offset[1] == 0 &&
58bfaf44 1110 ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) {
e05df3b1 1111 lock_page(page);
ff373558 1112 BUG_ON(page->mapping != NODE_MAPPING(sbi));
bae0ee7a 1113 f2fs_wait_on_page_writeback(page, NODE, true, true);
58bfaf44 1114 ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0;
e05df3b1
JK		 1115 set_page_dirty(page);
1116 unlock_page(page);
1117 }
1118 offset[1] = 0;
1119 offset[0]++;
1120 nofs += err;
1121 }
1122fail:
1123 f2fs_put_page(page, 0);
51dd6249 1124 trace_f2fs_truncate_inode_blocks_exit(inode, err);
e05df3b1
JK		 1125 return err > 0 ? 0 : err;
1126}
1127
9c77f754 1128/* caller must lock inode page */
4d57b86d 1129int f2fs_truncate_xattr_node(struct inode *inode)
4f16fb0f 1130{
4081363f 1131 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4f16fb0f
JK		 1132 nid_t nid = F2FS_I(inode)->i_xattr_nid;
1133 struct dnode_of_data dn;
1134 struct page *npage;
7735730d 1135 int err;
4f16fb0f
JK		 1136
1137 if (!nid)
1138 return 0;
1139
4d57b86d 1140 npage = f2fs_get_node_page(sbi, nid);
4f16fb0f
JK		 1141 if (IS_ERR(npage))
1142 return PTR_ERR(npage);
1143
7735730d
CY		 1144 set_new_dnode(&dn, inode, NULL, npage, nid);
1145 err = truncate_node(&dn);
1146 if (err) {
1147 f2fs_put_page(npage, 1);
1148 return err;
1149 }
1150
205b9822 1151 f2fs_i_xnid_write(inode, 0);
65985d93 1152
4f16fb0f
JK		 1153 return 0;
1154}
1155
39936837 1156/*
4f4124d0
CY		 1157 * Caller should grab and release a rwsem by calling f2fs_lock_op() and
1158 * f2fs_unlock_op().
39936837 1159 */
4d57b86d 1160int f2fs_remove_inode_page(struct inode *inode)
e05df3b1 1161{
e05df3b1 1162 struct dnode_of_data dn;
13ec7297 1163 int err;
e05df3b1 1164
c2e69583 1165 set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
4d57b86d 1166 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
13ec7297
CY		 1167 if (err)
1168 return err;
e05df3b1 1169
4d57b86d 1170 err = f2fs_truncate_xattr_node(inode);
13ec7297 1171 if (err) {
c2e69583 1172 f2fs_put_dnode(&dn);
13ec7297 1173 return err;
e05df3b1 1174 }
c2e69583
JK		 1175
1176 /* remove potential inline_data blocks */
1177 if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1178 S_ISLNK(inode->i_mode))
4d57b86d 1179 f2fs_truncate_data_blocks_range(&dn, 1);
c2e69583 1180
e1c42045 1181 /* 0 is possible, after f2fs_new_inode() has failed */
8d714f8a
JK		 1182 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
1183 f2fs_put_dnode(&dn);
1184 return -EIO;
1185 }
8b6810f8
CY		 1186
1187 if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) {
097a7686
CY		 1188 f2fs_warn(F2FS_I_SB(inode),
1189 "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu",
1190 inode->i_ino, (unsigned long long)inode->i_blocks);
8b6810f8
CY		 1191 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
1192 }
c2e69583
JK		 1193
1194 /* will put inode & node pages */
7735730d
CY		 1195 err = truncate_node(&dn);
1196 if (err) {
1197 f2fs_put_dnode(&dn);
1198 return err;
1199 }
13ec7297 1200 return 0;
e05df3b1
JK		 1201}
1202
4d57b86d 1203struct page *f2fs_new_inode_page(struct inode *inode)
e05df3b1 1204{
e05df3b1
JK		 1205 struct dnode_of_data dn;
1206
1207 /* allocate inode page for new inode */
1208 set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
44a83ff6
JK		 1209
1210 /* caller should f2fs_put_page(page, 1); */
4d57b86d 1211 return f2fs_new_node_page(&dn, 0);
e05df3b1
JK		 1212}
1213
4d57b86d 1214struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
e05df3b1 1215{
4081363f 1216 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
25cc5d3b 1217 struct node_info new_ni;
e05df3b1
JK		 1218 struct page *page;
1219 int err;
1220
91942321 1221 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
e05df3b1
JK		 1222 return ERR_PTR(-EPERM);
1223
300e129c 1224 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false);
e05df3b1
JK		 1225 if (!page)
1226 return ERR_PTR(-ENOMEM);
1227
0abd675e 1228 if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs))))
9c02740c 1229 goto fail;
0abd675e 1230
25cc5d3b 1231#ifdef CONFIG_F2FS_CHECK_FS
7735730d
CY		 1232 err = f2fs_get_node_info(sbi, dn->nid, &new_ni);
1233 if (err) {
1234 dec_valid_node_count(sbi, dn->inode, !ofs);
1235 goto fail;
1236 }
25cc5d3b
JK		 1237 f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR);
1238#endif
1239 new_ni.nid = dn->nid;
e05df3b1 1240 new_ni.ino = dn->inode->i_ino;
25cc5d3b
JK		 1241 new_ni.blk_addr = NULL_ADDR;
1242 new_ni.flag = 0;
1243 new_ni.version = 0;
479f40c4 1244 set_node_addr(sbi, &new_ni, NEW_ADDR, false);
9c02740c 1245
bae0ee7a 1246 f2fs_wait_on_page_writeback(page, NODE, true, true);
9c02740c 1247 fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true);
c5667575 1248 set_cold_node(page, S_ISDIR(dn->inode->i_mode));
237c0790
JK		 1249 if (!PageUptodate(page))
1250 SetPageUptodate(page);
12719ae1
JK		 1251 if (set_page_dirty(page))
1252 dn->node_changed = true;
e05df3b1 1253
4bc8e9bc 1254 if (f2fs_has_xattr_block(ofs))
205b9822 1255 f2fs_i_xnid_write(dn->inode, dn->nid);
479bd73a 1256
e05df3b1
JK		 1257 if (ofs == 0)
1258 inc_valid_inode_count(sbi);
e05df3b1
JK		 1259 return page;
1260
1261fail:
71e9fec5 1262 clear_node_page_dirty(page);
e05df3b1
JK		 1263 f2fs_put_page(page, 1);
1264 return ERR_PTR(err);
1265}
1266
56ae674c
JK		 1267/*
1268 * Caller should do after getting the following values.
1269 * 0: f2fs_put_page(page, 0)
86531d6b 1270 * LOCKED_PAGE or error: f2fs_put_page(page, 1)
56ae674c 1271 */
04d328de 1272static int read_node_page(struct page *page, int op_flags)
e05df3b1 1273{
4081363f 1274 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
e05df3b1 1275 struct node_info ni;
cf04e8eb 1276 struct f2fs_io_info fio = {
05ca3632 1277 .sbi = sbi,
cf04e8eb 1278 .type = NODE,
04d328de
MC		 1279 .op = REQ_OP_READ,
1280 .op_flags = op_flags,
05ca3632 1281 .page = page,
4375a336 1282 .encrypted_page = NULL,
cf04e8eb 1283 };
7735730d 1284 int err;
e05df3b1 1285
54c55c4e 1286 if (PageUptodate(page)) {
b42b179b
CY		 1287 if (!f2fs_inode_chksum_verify(sbi, page)) {
1288 ClearPageUptodate(page);
10f966bb 1289 return -EFSBADCRC;
b42b179b 1290 }
3bdad3c7 1291 return LOCKED_PAGE;
54c55c4e 1292 }
3bdad3c7 1293
7735730d
CY		 1294 err = f2fs_get_node_info(sbi, page->index, &ni);
1295 if (err)
1296 return err;
e05df3b1 1297
83a3bfdb
JK		 1298 if (unlikely(ni.blk_addr == NULL_ADDR) ||
1299 is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) {
2bca1e23 1300 ClearPageUptodate(page);
e05df3b1 1301 return -ENOENT;
393ff91f
JK		 1302 }
1303
7a9d7548 1304 fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr;
8b83ac81
CY		 1305
1306 err = f2fs_submit_page_bio(&fio);
1307
1308 if (!err)
1309 f2fs_update_iostat(sbi, FS_NODE_READ_IO, F2FS_BLKSIZE);
1310
1311 return err;
e05df3b1
JK		 1312}
1313
0a8165d7 1314/*
e05df3b1
JK		 1315 * Readahead a node page
1316 */
4d57b86d 1317void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 1318{
e05df3b1 1319 struct page *apage;
56ae674c 1320 int err;
e05df3b1 1321
e8458725
CY		 1322 if (!nid)
1323 return;
4d57b86d 1324 if (f2fs_check_nid_range(sbi, nid))
a4f843bd 1325 return;
e8458725 1326
5ec2d99d 1327 apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid);
999270de 1328 if (apage)
393ff91f 1329 return;
e05df3b1 1330
300e129c 1331 apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
e05df3b1
JK		 1332 if (!apage)
1333 return;
1334
70246286 1335 err = read_node_page(apage, REQ_RAHEAD);
86531d6b 1336 f2fs_put_page(apage, err ? 1 : 0);
e05df3b1
JK		 1337}
1338
17a0ee55 1339static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
0e022ea8 1340 struct page *parent, int start)
e05df3b1 1341{
e05df3b1 1342 struct page *page;
0e022ea8 1343 int err;
e05df3b1 1344
e05df3b1
JK		 1345 if (!nid)
1346 return ERR_PTR(-ENOENT);
4d57b86d 1347 if (f2fs_check_nid_range(sbi, nid))
a4f843bd 1348 return ERR_PTR(-EINVAL);
afcb7ca0 1349repeat:
300e129c 1350 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
e05df3b1
JK		 1351 if (!page)
1352 return ERR_PTR(-ENOMEM);
1353
70fd7614 1354 err = read_node_page(page, 0);
86531d6b
JK		 1355 if (err < 0) {
1356 f2fs_put_page(page, 1);
e05df3b1 1357 return ERR_PTR(err);
86531d6b 1358 } else if (err == LOCKED_PAGE) {
1f258ec1 1359 err = 0;
56ae674c 1360 goto page_hit;
86531d6b 1361 }
e05df3b1 1362
0e022ea8 1363 if (parent)
4d57b86d 1364 f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE);
c718379b 1365
e05df3b1 1366 lock_page(page);
0e022ea8 1367
4ef51a8f 1368 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
afcb7ca0
JK		 1369 f2fs_put_page(page, 1);
1370 goto repeat;
1371 }
1563ac75 1372
1f258ec1
CY		 1373 if (unlikely(!PageUptodate(page))) {
1374 err = -EIO;
1563ac75 1375 goto out_err;
1f258ec1 1376 }
704956ec
CY		 1377
1378 if (!f2fs_inode_chksum_verify(sbi, page)) {
10f966bb 1379 err = -EFSBADCRC;
704956ec
CY		 1380 goto out_err;
1381 }
e0f56cb4 1382page_hit:
0c9df7fb 1383 if(unlikely(nid != nid_of_node(page))) {
dcbb4c10
JP		 1384 f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
1385 nid, nid_of_node(page), ino_of_node(page),
1386 ofs_of_node(page), cpver_of_node(page),
1387 next_blkaddr_of_node(page));
1f258ec1 1388 err = -EINVAL;
0c9df7fb 1389out_err:
ee605234 1390 ClearPageUptodate(page);
0c9df7fb 1391 f2fs_put_page(page, 1);
1f258ec1 1392 return ERR_PTR(err);
0c9df7fb 1393 }
e05df3b1
JK		 1394 return page;
1395}
1396
4d57b86d 1397struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
0e022ea8
CY		 1398{
1399 return __get_node_page(sbi, nid, NULL, 0);
1400}
1401
4d57b86d 1402struct page *f2fs_get_node_page_ra(struct page *parent, int start)
0e022ea8
CY		 1403{
1404 struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
1405 nid_t nid = get_nid(parent, start, false);
1406
1407 return __get_node_page(sbi, nid, parent, start);
1408}
1409
2049d4fc
JK		 1410static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
1411{
1412 struct inode *inode;
1413 struct page *page;
0f3311a8 1414 int ret;
2049d4fc
JK		 1415
1416 /* should flush inline_data before evict_inode */
1417 inode = ilookup(sbi->sb, ino);
1418 if (!inode)
1419 return;
1420
01eccef7
CY		 1421 page = f2fs_pagecache_get_page(inode->i_mapping, 0,
1422 FGP_LOCK|FGP_NOWAIT, 0);
2049d4fc
JK		 1423 if (!page)
1424 goto iput_out;
1425
1426 if (!PageUptodate(page))
1427 goto page_out;
1428
1429 if (!PageDirty(page))
1430 goto page_out;
1431
1432 if (!clear_page_dirty_for_io(page))
1433 goto page_out;
1434
0f3311a8
CY		 1435 ret = f2fs_write_inline_data(inode, page);
1436 inode_dec_dirty_pages(inode);
4d57b86d 1437 f2fs_remove_dirty_inode(inode);
0f3311a8 1438 if (ret)
2049d4fc
JK		 1439 set_page_dirty(page);
1440page_out:
4a6de50d 1441 f2fs_put_page(page, 1);
2049d4fc
JK		 1442iput_out:
1443 iput(inode);
1444}
1445
608514de
JK		 1446static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
1447{
028a63a6 1448 pgoff_t index;
608514de
JK		 1449 struct pagevec pvec;
1450 struct page *last_page = NULL;
028a63a6 1451 int nr_pages;
608514de 1452
86679820 1453 pagevec_init(&pvec);
608514de 1454 index = 0;
028a63a6
JK		 1455
1456 while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
67fd707f 1457 PAGECACHE_TAG_DIRTY))) {
028a63a6 1458 int i;
608514de
JK		 1459
1460 for (i = 0; i < nr_pages; i++) {
1461 struct page *page = pvec.pages[i];
1462
1463 if (unlikely(f2fs_cp_error(sbi))) {
1464 f2fs_put_page(last_page, 0);
1465 pagevec_release(&pvec);
1466 return ERR_PTR(-EIO);
1467 }
1468
1469 if (!IS_DNODE(page) || !is_cold_node(page))
1470 continue;
1471 if (ino_of_node(page) != ino)
1472 continue;
1473
1474 lock_page(page);
1475
1476 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1477continue_unlock:
1478 unlock_page(page);
1479 continue;
1480 }
1481 if (ino_of_node(page) != ino)
1482 goto continue_unlock;
1483
1484 if (!PageDirty(page)) {
1485 /* someone wrote it for us */
1486 goto continue_unlock;
1487 }
1488
1489 if (last_page)
1490 f2fs_put_page(last_page, 0);
1491
1492 get_page(page);
1493 last_page = page;
1494 unlock_page(page);
1495 }
1496 pagevec_release(&pvec);
1497 cond_resched();
1498 }
1499 return last_page;
1500}
1501
d68f735b 1502static int __write_node_page(struct page *page, bool atomic, bool *submitted,
b0af6d49 1503 struct writeback_control *wbc, bool do_balance,
50fa53ec 1504 enum iostat_type io_type, unsigned int *seq_id)
faa24895
JK		 1505{
1506 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
1507 nid_t nid;
1508 struct node_info ni;
1509 struct f2fs_io_info fio = {
1510 .sbi = sbi,
39d787be 1511 .ino = ino_of_node(page),
faa24895
JK		 1512 .type = NODE,
1513 .op = REQ_OP_WRITE,
1514 .op_flags = wbc_to_write_flags(wbc),
1515 .page = page,
1516 .encrypted_page = NULL,
d68f735b 1517 .submitted = false,
b0af6d49 1518 .io_type = io_type,
578c6478 1519 .io_wbc = wbc,
faa24895 1520 };
50fa53ec 1521 unsigned int seq;
faa24895
JK		 1522
1523 trace_f2fs_writepage(page, NODE);
1524
6d7c865c
JK		 1525 if (unlikely(f2fs_cp_error(sbi))) {
1526 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
1527 ClearPageUptodate(page);
1528 dec_page_count(sbi, F2FS_DIRTY_NODES);
1529 unlock_page(page);
1530 return 0;
1531 }
868de613 1532 goto redirty_out;
6d7c865c 1533 }
db198ae0 1534
faa24895
JK		 1535 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1536 goto redirty_out;
faa24895 1537
100c0655
JK		 1538 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
1539 wbc->sync_mode == WB_SYNC_NONE &&
fd8c8caf
CY		 1540 IS_DNODE(page) && is_cold_node(page))
1541 goto redirty_out;
1542
faa24895
JK		 1543 /* get old block addr of this node page */
1544 nid = nid_of_node(page);
1545 f2fs_bug_on(sbi, page->index != nid);
1546
7735730d
CY		 1547 if (f2fs_get_node_info(sbi, nid, &ni))
1548 goto redirty_out;
1549
faa24895
JK		 1550 if (wbc->for_reclaim) {
1551 if (!down_read_trylock(&sbi->node_write))
1552 goto redirty_out;
1553 } else {
1554 down_read(&sbi->node_write);
1555 }
1556
faa24895
JK		 1557 /* This page is already truncated */
1558 if (unlikely(ni.blk_addr == NULL_ADDR)) {
1559 ClearPageUptodate(page);
1560 dec_page_count(sbi, F2FS_DIRTY_NODES);
1561 up_read(&sbi->node_write);
1562 unlock_page(page);
1563 return 0;
1564 }
1565
c9b60788 1566 if (__is_valid_data_blkaddr(ni.blk_addr) &&
93770ab7
CY		 1567 !f2fs_is_valid_blkaddr(sbi, ni.blk_addr,
1568 DATA_GENERIC_ENHANCE)) {
89d13c38 1569 up_read(&sbi->node_write);
c9b60788 1570 goto redirty_out;
89d13c38 1571 }
c9b60788 1572
e7c75ab0
JK		 1573 if (atomic && !test_opt(sbi, NOBARRIER))
1574 fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
1575
dc5a9412 1576 /* should add to global list before clearing PAGECACHE status */
50fa53ec
CY		 1577 if (f2fs_in_warm_node_list(sbi, page)) {
1578 seq = f2fs_add_fsync_node_entry(sbi, page);
1579 if (seq_id)
1580 *seq_id = seq;
1581 }
1582
dc5a9412
CY		 1583 set_page_writeback(page);
1584 ClearPageError(page);
1585
faa24895 1586 fio.old_blkaddr = ni.blk_addr;
4d57b86d 1587 f2fs_do_write_node_page(nid, &fio);
faa24895
JK		 1588 set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page));
1589 dec_page_count(sbi, F2FS_DIRTY_NODES);
1590 up_read(&sbi->node_write);
1591
d68f735b 1592 if (wbc->for_reclaim) {
bab475c5 1593 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE);
d68f735b
JK		 1594 submitted = NULL;
1595 }
faa24895
JK		 1596
1597 unlock_page(page);
1598
d68f735b 1599 if (unlikely(f2fs_cp_error(sbi))) {
b9109b0e 1600 f2fs_submit_merged_write(sbi, NODE);
d68f735b
JK		 1601 submitted = NULL;
1602 }
1603 if (submitted)
1604 *submitted = fio.submitted;
faa24895 1605
401db79f
YS		 1606 if (do_balance)
1607 f2fs_balance_fs(sbi, false);
faa24895
JK		 1608 return 0;
1609
1610redirty_out:
1611 redirty_page_for_writepage(wbc, page);
1612 return AOP_WRITEPAGE_ACTIVATE;
1613}
1614
48018b4c 1615int f2fs_move_node_page(struct page *node_page, int gc_type)
f15194fc 1616{
48018b4c
CY		 1617 int err = 0;
1618
f15194fc
YH		 1619 if (gc_type == FG_GC) {
1620 struct writeback_control wbc = {
1621 .sync_mode = WB_SYNC_ALL,
1622 .nr_to_write = 1,
1623 .for_reclaim = 0,
1624 };
1625
bae0ee7a 1626 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
8d64d365
CY		 1627
1628 set_page_dirty(node_page);
1629
48018b4c
CY		 1630 if (!clear_page_dirty_for_io(node_page)) {
1631 err = -EAGAIN;
f15194fc 1632 goto out_page;
48018b4c 1633 }
f15194fc
YH		 1634
1635 if (__write_node_page(node_page, false, NULL,
48018b4c
CY		 1636 &wbc, false, FS_GC_NODE_IO, NULL)) {
1637 err = -EAGAIN;
f15194fc 1638 unlock_page(node_page);
48018b4c 1639 }
f15194fc
YH		 1640 goto release_page;
1641 } else {
1642 /* set page dirty and write it */
1643 if (!PageWriteback(node_page))
1644 set_page_dirty(node_page);
1645 }
1646out_page:
1647 unlock_page(node_page);
1648release_page:
1649 f2fs_put_page(node_page, 0);
48018b4c 1650 return err;
f15194fc
YH		 1651}
1652
faa24895
JK		 1653static int f2fs_write_node_page(struct page *page,
1654 struct writeback_control *wbc)
1655{
50fa53ec
CY		 1656 return __write_node_page(page, false, NULL, wbc, false,
1657 FS_NODE_IO, NULL);
faa24895
JK		 1658}
1659
4d57b86d 1660int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
50fa53ec
CY		 1661 struct writeback_control *wbc, bool atomic,
1662 unsigned int *seq_id)
e05df3b1 1663{
028a63a6 1664 pgoff_t index;
e05df3b1 1665 struct pagevec pvec;
c267ec15 1666 int ret = 0;
608514de
JK		 1667 struct page *last_page = NULL;
1668 bool marked = false;
26de9b11 1669 nid_t ino = inode->i_ino;
028a63a6 1670 int nr_pages;
bab475c5 1671 int nwritten = 0;
52681375 1672
608514de
JK		 1673 if (atomic) {
1674 last_page = last_fsync_dnode(sbi, ino);
1675 if (IS_ERR_OR_NULL(last_page))
1676 return PTR_ERR_OR_ZERO(last_page);
1677 }
1678retry:
86679820 1679 pagevec_init(&pvec);
52681375 1680 index = 0;
028a63a6
JK		 1681
1682 while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index,
67fd707f 1683 PAGECACHE_TAG_DIRTY))) {
028a63a6 1684 int i;
52681375
JK		 1685
1686 for (i = 0; i < nr_pages; i++) {
1687 struct page *page = pvec.pages[i];
d68f735b 1688 bool submitted = false;
52681375
JK		 1689
1690 if (unlikely(f2fs_cp_error(sbi))) {
608514de 1691 f2fs_put_page(last_page, 0);
52681375 1692 pagevec_release(&pvec);
9de69279
CY		 1693 ret = -EIO;
1694 goto out;
52681375
JK		 1695 }
1696
1697 if (!IS_DNODE(page) || !is_cold_node(page))
1698 continue;
1699 if (ino_of_node(page) != ino)
1700 continue;
1701
1702 lock_page(page);
1703
1704 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1705continue_unlock:
1706 unlock_page(page);
1707 continue;
1708 }
1709 if (ino_of_node(page) != ino)
1710 goto continue_unlock;
1711
608514de 1712 if (!PageDirty(page) && page != last_page) {
52681375
JK		 1713 /* someone wrote it for us */
1714 goto continue_unlock;
1715 }
1716
bae0ee7a 1717 f2fs_wait_on_page_writeback(page, NODE, true, true);
52681375 1718
d29fd172
JK		 1719 set_fsync_mark(page, 0);
1720 set_dentry_mark(page, 0);
1721
608514de
JK		 1722 if (!atomic || page == last_page) {
1723 set_fsync_mark(page, 1);
26de9b11
JK		 1724 if (IS_INODE(page)) {
1725 if (is_inode_flag_set(inode,
1726 FI_DIRTY_INODE))
4d57b86d 1727 f2fs_update_inode(inode, page);
608514de 1728 set_dentry_mark(page,
4d57b86d 1729 f2fs_need_dentry_mark(sbi, ino));
26de9b11 1730 }
a87aff1d 1731 /* may be written by other thread */
608514de
JK		 1732 if (!PageDirty(page))
1733 set_page_dirty(page);
1734 }
1735
1736 if (!clear_page_dirty_for_io(page))
1737 goto continue_unlock;
52681375 1738
e7c75ab0 1739 ret = __write_node_page(page, atomic &&
d68f735b 1740 page == last_page,
b0af6d49 1741 &submitted, wbc, true,
50fa53ec 1742 FS_NODE_IO, seq_id);
c267ec15 1743 if (ret) {
52681375 1744 unlock_page(page);
608514de
JK		 1745 f2fs_put_page(last_page, 0);
1746 break;
d68f735b 1747 } else if (submitted) {
bab475c5 1748 nwritten++;
608514de 1749 }
3f5f4959 1750
608514de
JK		 1751 if (page == last_page) {
1752 f2fs_put_page(page, 0);
1753 marked = true;
52681375 1754 break;
c267ec15 1755 }
52681375
JK		 1756 }
1757 pagevec_release(&pvec);
1758 cond_resched();
1759
608514de 1760 if (ret || marked)
52681375
JK		 1761 break;
1762 }
608514de 1763 if (!ret && atomic && !marked) {
dcbb4c10
JP		 1764 f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx",
1765 ino, last_page->index);
608514de 1766 lock_page(last_page);
bae0ee7a 1767 f2fs_wait_on_page_writeback(last_page, NODE, true, true);
608514de
JK		 1768 set_page_dirty(last_page);
1769 unlock_page(last_page);
1770 goto retry;
1771 }
9de69279 1772out:
bab475c5
CY		 1773 if (nwritten)
1774 f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE);
c267ec15 1775 return ret ? -EIO: 0;
52681375
JK		 1776}
1777
052a82d8
CY		 1778static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data)
1779{
1780 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1781 bool clean;
1782
1783 if (inode->i_ino != ino)
1784 return 0;
1785
1786 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
1787 return 0;
1788
1789 spin_lock(&sbi->inode_lock[DIRTY_META]);
1790 clean = list_empty(&F2FS_I(inode)->gdirty_list);
1791 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1792
1793 if (clean)
1794 return 0;
1795
1796 inode = igrab(inode);
1797 if (!inode)
1798 return 0;
1799 return 1;
1800}
1801
1802static bool flush_dirty_inode(struct page *page)
1803{
1804 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
1805 struct inode *inode;
1806 nid_t ino = ino_of_node(page);
1807
1808 inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL);
1809 if (!inode)
1810 return false;
1811
1812 f2fs_update_inode(inode, page);
1813 unlock_page(page);
1814
1815 iput(inode);
1816 return true;
1817}
1818
68e79baf 1819void f2fs_flush_inline_data(struct f2fs_sb_info *sbi)
34c061ad
SL		 1820{
1821 pgoff_t index = 0;
1822 struct pagevec pvec;
1823 int nr_pages;
34c061ad
SL		 1824
1825 pagevec_init(&pvec);
1826
1827 while ((nr_pages = pagevec_lookup_tag(&pvec,
1828 NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) {
1829 int i;
1830
1831 for (i = 0; i < nr_pages; i++) {
1832 struct page *page = pvec.pages[i];
1833
1834 if (!IS_DNODE(page))
1835 continue;
1836
1837 lock_page(page);
1838
1839 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1840continue_unlock:
1841 unlock_page(page);
1842 continue;
1843 }
1844
1845 if (!PageDirty(page)) {
1846 /* someone wrote it for us */
1847 goto continue_unlock;
1848 }
1849
1850 /* flush inline_data, if it's async context. */
1851 if (is_inline_node(page)) {
1852 clear_inline_node(page);
1853 unlock_page(page);
1854 flush_inline_data(sbi, ino_of_node(page));
1855 continue;
1856 }
1857 unlock_page(page);
1858 }
1859 pagevec_release(&pvec);
1860 cond_resched();
1861 }
34c061ad
SL		 1862}
1863
4d57b86d
CY		 1864int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
1865 struct writeback_control *wbc,
b0af6d49 1866 bool do_balance, enum iostat_type io_type)
52681375 1867{
028a63a6 1868 pgoff_t index;
52681375
JK		 1869 struct pagevec pvec;
1870 int step = 0;
12bb0a8f 1871 int nwritten = 0;
3f5f4959 1872 int ret = 0;
c29fd0c0 1873 int nr_pages, done = 0;
e05df3b1 1874
86679820 1875 pagevec_init(&pvec);
e05df3b1
JK		 1876
1877next_step:
1878 index = 0;
028a63a6 1879
c29fd0c0
CY		 1880 while (!done && (nr_pages = pagevec_lookup_tag(&pvec,
1881 NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) {
028a63a6 1882 int i;
e05df3b1
JK		 1883
1884 for (i = 0; i < nr_pages; i++) {
1885 struct page *page = pvec.pages[i];
d68f735b 1886 bool submitted = false;
052a82d8 1887 bool may_dirty = true;
e05df3b1 1888
c29fd0c0
CY		 1889 /* give a priority to WB_SYNC threads */
1890 if (atomic_read(&sbi->wb_sync_req[NODE]) &&
1891 wbc->sync_mode == WB_SYNC_NONE) {
1892 done = 1;
1893 break;
1894 }
1895
e05df3b1
JK		 1896 /*
1897 * flushing sequence with step:
1898 * 0. indirect nodes
1899 * 1. dentry dnodes
1900 * 2. file dnodes
1901 */
1902 if (step == 0 && IS_DNODE(page))
1903 continue;
1904 if (step == 1 && (!IS_DNODE(page) ||
1905 is_cold_node(page)))
1906 continue;
1907 if (step == 2 && (!IS_DNODE(page) ||
1908 !is_cold_node(page)))
1909 continue;
9a4cbc9e 1910lock_node:
4b270a8c
CY		 1911 if (wbc->sync_mode == WB_SYNC_ALL)
1912 lock_page(page);
1913 else if (!trylock_page(page))
e05df3b1
JK		 1914 continue;
1915
4ef51a8f 1916 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
e05df3b1
JK		 1917continue_unlock:
1918 unlock_page(page);
1919 continue;
1920 }
e05df3b1
JK		 1921
1922 if (!PageDirty(page)) {
1923 /* someone wrote it for us */
1924 goto continue_unlock;
1925 }
1926
b0f3b87f
JK		 1927 /* flush inline_data/inode, if it's async context. */
1928 if (!do_balance)
1929 goto write_node;
1930
1931 /* flush inline_data */
1932 if (is_inline_node(page)) {
2049d4fc
JK		 1933 clear_inline_node(page);
1934 unlock_page(page);
1935 flush_inline_data(sbi, ino_of_node(page));
9a4cbc9e 1936 goto lock_node;
052a82d8
CY		 1937 }
1938
1939 /* flush dirty inode */
1940 if (IS_INODE(page) && may_dirty) {
1941 may_dirty = false;
1942 if (flush_dirty_inode(page))
1943 goto lock_node;
2049d4fc 1944 }
b0f3b87f 1945write_node:
bae0ee7a 1946 f2fs_wait_on_page_writeback(page, NODE, true, true);
fa3d2bdf 1947
e05df3b1
JK		 1948 if (!clear_page_dirty_for_io(page))
1949 goto continue_unlock;
1950
52681375
JK		 1951 set_fsync_mark(page, 0);
1952 set_dentry_mark(page, 0);
52746519 1953
401db79f 1954 ret = __write_node_page(page, false, &submitted,
50fa53ec 1955 wbc, do_balance, io_type, NULL);
d68f735b 1956 if (ret)
52746519 1957 unlock_page(page);
d68f735b 1958 else if (submitted)
3f5f4959 1959 nwritten++;
e05df3b1
JK		 1960
1961 if (--wbc->nr_to_write == 0)
1962 break;
1963 }
1964 pagevec_release(&pvec);
1965 cond_resched();
1966
1967 if (wbc->nr_to_write == 0) {
1968 step = 2;
1969 break;
1970 }
1971 }
1972
1973 if (step < 2) {
100c0655
JK		 1974 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
1975 wbc->sync_mode == WB_SYNC_NONE && step == 1)
fd8c8caf 1976 goto out;
e05df3b1
JK		 1977 step++;
1978 goto next_step;
1979 }
fd8c8caf 1980out:
3f5f4959 1981 if (nwritten)
b9109b0e 1982 f2fs_submit_merged_write(sbi, NODE);
db198ae0
CY		 1983
1984 if (unlikely(f2fs_cp_error(sbi)))
1985 return -EIO;
3f5f4959 1986 return ret;
e05df3b1
JK		 1987}
1988
50fa53ec
CY		 1989int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
1990 unsigned int seq_id)
cfe58f9d 1991{
50fa53ec
CY		 1992 struct fsync_node_entry *fn;
1993 struct page *page;
1994 struct list_head *head = &sbi->fsync_node_list;
1995 unsigned long flags;
1996 unsigned int cur_seq_id = 0;
280db3c8 1997 int ret2, ret = 0;
cfe58f9d 1998
50fa53ec
CY		 1999 while (seq_id && cur_seq_id < seq_id) {
2000 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
2001 if (list_empty(head)) {
2002 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
2003 break;
2004 }
2005 fn = list_first_entry(head, struct fsync_node_entry, list);
2006 if (fn->seq_id > seq_id) {
2007 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
2008 break;
2009 }
2010 cur_seq_id = fn->seq_id;
2011 page = fn->page;
2012 get_page(page);
2013 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
4ef51a8f 2014
bae0ee7a 2015 f2fs_wait_on_page_writeback(page, NODE, true, false);
50fa53ec
CY		 2016 if (TestClearPageError(page))
2017 ret = -EIO;
cfe58f9d 2018
50fa53ec 2019 put_page(page);
cfe58f9d 2020
50fa53ec
CY		 2021 if (ret)
2022 break;
cfe58f9d
JK		 2023 }
2024
280db3c8 2025 ret2 = filemap_check_errors(NODE_MAPPING(sbi));
cfe58f9d
JK		 2026 if (!ret)
2027 ret = ret2;
50fa53ec 2028
cfe58f9d
JK		 2029 return ret;
2030}
2031
e05df3b1
JK		 2032static int f2fs_write_node_pages(struct address_space *mapping,
2033 struct writeback_control *wbc)
2034{
4081363f 2035 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
9dfa1baf 2036 struct blk_plug plug;
50c8cdb3 2037 long diff;
e05df3b1 2038
0771fcc7
CY		 2039 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
2040 goto skip_write;
2041
4660f9c0 2042 /* balancing f2fs's metadata in background */
7bcd0cfa 2043 f2fs_balance_fs_bg(sbi, true);
e05df3b1 2044
a7fdffbd 2045 /* collect a number of dirty node pages and write together */
812a9597
JK		 2046 if (wbc->sync_mode != WB_SYNC_ALL &&
2047 get_pages(sbi, F2FS_DIRTY_NODES) <
2048 nr_pages_to_skip(sbi, NODE))
d3baf95d 2049 goto skip_write;
a7fdffbd 2050
c29fd0c0
CY		 2051 if (wbc->sync_mode == WB_SYNC_ALL)
2052 atomic_inc(&sbi->wb_sync_req[NODE]);
2053 else if (atomic_read(&sbi->wb_sync_req[NODE]))
2054 goto skip_write;
2055
d31c7c3f
YH		 2056 trace_f2fs_writepages(mapping->host, wbc, NODE);
2057
50c8cdb3 2058 diff = nr_pages_to_write(sbi, NODE, wbc);
9dfa1baf 2059 blk_start_plug(&plug);
4d57b86d 2060 f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO);
9dfa1baf 2061 blk_finish_plug(&plug);
50c8cdb3 2062 wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff);
c29fd0c0
CY		 2063
2064 if (wbc->sync_mode == WB_SYNC_ALL)
2065 atomic_dec(&sbi->wb_sync_req[NODE]);
e05df3b1 2066 return 0;
d3baf95d
JK		 2067
2068skip_write:
2069 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES);
d31c7c3f 2070 trace_f2fs_writepages(mapping->host, wbc, NODE);
d3baf95d 2071 return 0;
e05df3b1
JK		 2072}
2073
2074static int f2fs_set_node_page_dirty(struct page *page)
2075{
26c6b887
JK		 2076 trace_f2fs_set_page_dirty(page, NODE);
2077
237c0790
JK		 2078 if (!PageUptodate(page))
2079 SetPageUptodate(page);
54c55c4e
WG		 2080#ifdef CONFIG_F2FS_CHECK_FS
2081 if (IS_INODE(page))
2082 f2fs_inode_chksum_set(F2FS_P_SB(page), page);
2083#endif
e05df3b1 2084 if (!PageDirty(page)) {
b87078ad 2085 __set_page_dirty_nobuffers(page);
4081363f 2086 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
240a5915 2087 f2fs_set_page_private(page, 0);
9e4ded3f 2088 f2fs_trace_pid(page);
e05df3b1
JK		 2089 return 1;
2090 }
2091 return 0;
2092}
2093
0a8165d7 2094/*
e05df3b1
JK		 2095 * Structure of the f2fs node operations
2096 */
2097const struct address_space_operations f2fs_node_aops = {
2098 .writepage = f2fs_write_node_page,
2099 .writepages = f2fs_write_node_pages,
2100 .set_page_dirty = f2fs_set_node_page_dirty,
487261f3
CY		 2101 .invalidatepage = f2fs_invalidate_page,
2102 .releasepage = f2fs_release_page,
5b7a487c 2103#ifdef CONFIG_MIGRATION
a87aff1d 2104 .migratepage = f2fs_migrate_page,
5b7a487c 2105#endif
e05df3b1
JK		 2106};
2107
8a7ed66a
JK		 2108static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
2109 nid_t n)
e05df3b1 2110{
8a7ed66a 2111 return radix_tree_lookup(&nm_i->free_nid_root, n);
e05df3b1
JK		 2112}
2113
9a4ffdf5 2114static int __insert_free_nid(struct f2fs_sb_info *sbi,
b815bdc7 2115 struct free_nid *i)
e05df3b1 2116{
b8559dc2
CY		 2117 struct f2fs_nm_info *nm_i = NM_I(sbi);
2118
a0761f63
FL		 2119 int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i);
2120 if (err)
2121 return err;
eb0aa4b8 2122
b815bdc7
LS		 2123 nm_i->nid_cnt[FREE_NID]++;
2124 list_add_tail(&i->list, &nm_i->free_nid_list);
eb0aa4b8 2125 return 0;
b8559dc2
CY		 2126}
2127
9a4ffdf5 2128static void __remove_free_nid(struct f2fs_sb_info *sbi,
a0761f63 2129 struct free_nid *i, enum nid_state state)
b8559dc2
CY		 2130{
2131 struct f2fs_nm_info *nm_i = NM_I(sbi);
2132
9a4ffdf5
CY		 2133 f2fs_bug_on(sbi, state != i->state);
2134 nm_i->nid_cnt[state]--;
2135 if (state == FREE_NID)
2136 list_del(&i->list);
a0761f63
FL		 2137 radix_tree_delete(&nm_i->free_nid_root, i->nid);
2138}
2139
2140static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i,
2141 enum nid_state org_state, enum nid_state dst_state)
b8559dc2
CY		 2142{
2143 struct f2fs_nm_info *nm_i = NM_I(sbi);
2144
a0761f63
FL		 2145 f2fs_bug_on(sbi, org_state != i->state);
2146 i->state = dst_state;
2147 nm_i->nid_cnt[org_state]--;
2148 nm_i->nid_cnt[dst_state]++;
2149
2150 switch (dst_state) {
2151 case PREALLOC_NID:
2152 list_del(&i->list);
2153 break;
2154 case FREE_NID:
2155 list_add_tail(&i->list, &nm_i->free_nid_list);
2156 break;
2157 default:
2158 BUG_ON(1);
2159 }
e05df3b1
JK		 2160}
2161
5921aaa1
L		 2162static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
2163 bool set, bool build)
2164{
2165 struct f2fs_nm_info *nm_i = NM_I(sbi);
2166 unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid);
2167 unsigned int nid_ofs = nid - START_NID(nid);
2168
2169 if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap))
2170 return;
2171
2172 if (set) {
2173 if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
2174 return;
2175 __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
2176 nm_i->free_nid_count[nat_ofs]++;
2177 } else {
2178 if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
2179 return;
2180 __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
2181 if (!build)
2182 nm_i->free_nid_count[nat_ofs]--;
2183 }
2184}
2185
4ac91242 2186/* return if the nid is recognized as free */
5921aaa1
L		 2187static bool add_free_nid(struct f2fs_sb_info *sbi,
2188 nid_t nid, bool build, bool update)
e05df3b1 2189{
6fb03f3a 2190 struct f2fs_nm_info *nm_i = NM_I(sbi);
30a61ddf 2191 struct free_nid *i, *e;
59bbd474 2192 struct nat_entry *ne;
30a61ddf
CY		 2193 int err = -EINVAL;
2194 bool ret = false;
9198aceb
JK		 2195
2196 /* 0 nid should not be used */
cfb271d4 2197 if (unlikely(nid == 0))
4ac91242 2198 return false;
59bbd474 2199
626bcf2b
CY		 2200 if (unlikely(f2fs_check_nid_range(sbi, nid)))
2201 return false;
2202
7bd59381 2203 i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS);
e05df3b1 2204 i->nid = nid;
9a4ffdf5 2205 i->state = FREE_NID;
e05df3b1 2206
5921aaa1 2207 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
769ec6e5 2208
b8559dc2 2209 spin_lock(&nm_i->nid_list_lock);
30a61ddf
CY		 2210
2211 if (build) {
2212 /*
2213 * Thread A Thread B
2214 * - f2fs_create
2215 * - f2fs_new_inode
4d57b86d 2216 * - f2fs_alloc_nid
9a4ffdf5 2217 * - __insert_nid_to_list(PREALLOC_NID)
30a61ddf 2218 * - f2fs_balance_fs_bg
4d57b86d
CY		 2219 * - f2fs_build_free_nids
2220 * - __f2fs_build_free_nids
30a61ddf
CY		 2221 * - scan_nat_page
2222 * - add_free_nid
2223 * - __lookup_nat_cache
2224 * - f2fs_add_link
4d57b86d
CY		 2225 * - f2fs_init_inode_metadata
2226 * - f2fs_new_inode_page
2227 * - f2fs_new_node_page
30a61ddf 2228 * - set_node_addr
4d57b86d 2229 * - f2fs_alloc_nid_done
9a4ffdf5
CY		 2230 * - __remove_nid_from_list(PREALLOC_NID)
2231 * - __insert_nid_to_list(FREE_NID)
30a61ddf
CY		 2232 */
2233 ne = __lookup_nat_cache(nm_i, nid);
2234 if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) ||
2235 nat_get_blkaddr(ne) != NULL_ADDR))
2236 goto err_out;
2237
2238 e = __lookup_free_nid_list(nm_i, nid);
2239 if (e) {
9a4ffdf5 2240 if (e->state == FREE_NID)
30a61ddf
CY		 2241 ret = true;
2242 goto err_out;
2243 }
2244 }
2245 ret = true;
b815bdc7 2246 err = __insert_free_nid(sbi, i);
30a61ddf 2247err_out:
5921aaa1
L		 2248 if (update) {
2249 update_free_nid_bitmap(sbi, nid, ret, build);
2250 if (!build)
2251 nm_i->available_nids++;
2252 }
eb0aa4b8
JK		 2253 spin_unlock(&nm_i->nid_list_lock);
2254 radix_tree_preload_end();
5921aaa1 2255
30a61ddf 2256 if (err)
e05df3b1 2257 kmem_cache_free(free_nid_slab, i);
30a61ddf 2258 return ret;
e05df3b1
JK		 2259}
2260
b8559dc2 2261static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 2262{
b8559dc2 2263 struct f2fs_nm_info *nm_i = NM_I(sbi);
e05df3b1 2264 struct free_nid *i;
cf0ee0f0
CY		 2265 bool need_free = false;
2266
b8559dc2 2267 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2268 i = __lookup_free_nid_list(nm_i, nid);
9a4ffdf5 2269 if (i && i->state == FREE_NID) {
a0761f63 2270 __remove_free_nid(sbi, i, FREE_NID);
cf0ee0f0 2271 need_free = true;
e05df3b1 2272 }
b8559dc2 2273 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2274
2275 if (need_free)
2276 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2277}
2278
e2374015 2279static int scan_nat_page(struct f2fs_sb_info *sbi,
e05df3b1
JK		 2280 struct page *nat_page, nid_t start_nid)
2281{
6fb03f3a 2282 struct f2fs_nm_info *nm_i = NM_I(sbi);
e05df3b1
JK		 2283 struct f2fs_nat_block *nat_blk = page_address(nat_page);
2284 block_t blk_addr;
4ac91242 2285 unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid);
e05df3b1
JK		 2286 int i;
2287
23380b85 2288 __set_bit_le(nat_ofs, nm_i->nat_block_bitmap);
4ac91242 2289
e05df3b1
JK		 2290 i = start_nid % NAT_ENTRY_PER_BLOCK;
2291
2292 for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {
cfb271d4 2293 if (unlikely(start_nid >= nm_i->max_nid))
04431c44 2294 break;
23d38844
HL		 2295
2296 blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr);
e2374015
CY		 2297
2298 if (blk_addr == NEW_ADDR)
2299 return -EINVAL;
2300
5921aaa1
L		 2301 if (blk_addr == NULL_ADDR) {
2302 add_free_nid(sbi, start_nid, true, true);
2303 } else {
2304 spin_lock(&NM_I(sbi)->nid_list_lock);
2305 update_free_nid_bitmap(sbi, start_nid, false, true);
2306 spin_unlock(&NM_I(sbi)->nid_list_lock);
2307 }
4ac91242 2308 }
e2374015
CY		 2309
2310 return 0;
4ac91242
CY		 2311}
2312
2fbaa25f 2313static void scan_curseg_cache(struct f2fs_sb_info *sbi)
4ac91242 2314{
4ac91242
CY		 2315 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
2316 struct f2fs_journal *journal = curseg->journal;
2fbaa25f
CY		 2317 int i;
2318
2319 down_read(&curseg->journal_rwsem);
2320 for (i = 0; i < nats_in_cursum(journal); i++) {
2321 block_t addr;
2322 nid_t nid;
2323
2324 addr = le32_to_cpu(nat_in_journal(journal, i).block_addr);
2325 nid = le32_to_cpu(nid_in_journal(journal, i));
2326 if (addr == NULL_ADDR)
5921aaa1 2327 add_free_nid(sbi, nid, true, false);
2fbaa25f
CY		 2328 else
2329 remove_free_nid(sbi, nid);
2330 }
2331 up_read(&curseg->journal_rwsem);
2332}
2333
2334static void scan_free_nid_bits(struct f2fs_sb_info *sbi)
2335{
2336 struct f2fs_nm_info *nm_i = NM_I(sbi);
4ac91242 2337 unsigned int i, idx;
97456574 2338 nid_t nid;
4ac91242
CY		 2339
2340 down_read(&nm_i->nat_tree_lock);
2341
2342 for (i = 0; i < nm_i->nat_blocks; i++) {
2343 if (!test_bit_le(i, nm_i->nat_block_bitmap))
2344 continue;
586d1492
CY		 2345 if (!nm_i->free_nid_count[i])
2346 continue;
4ac91242 2347 for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) {
97456574
FL		 2348 idx = find_next_bit_le(nm_i->free_nid_bitmap[i],
2349 NAT_ENTRY_PER_BLOCK, idx);
2350 if (idx >= NAT_ENTRY_PER_BLOCK)
2351 break;
4ac91242
CY		 2352
2353 nid = i * NAT_ENTRY_PER_BLOCK + idx;
5921aaa1 2354 add_free_nid(sbi, nid, true, false);
4ac91242 2355
9a4ffdf5 2356 if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS)
4ac91242
CY		 2357 goto out;
2358 }
2359 }
2360out:
2fbaa25f 2361 scan_curseg_cache(sbi);
4ac91242 2362
4ac91242 2363 up_read(&nm_i->nat_tree_lock);
e05df3b1
JK		 2364}
2365
e2374015 2366static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi,
4d57b86d 2367 bool sync, bool mount)
e05df3b1 2368{
e05df3b1 2369 struct f2fs_nm_info *nm_i = NM_I(sbi);
e2374015 2370 int i = 0, ret;
55008d84 2371 nid_t nid = nm_i->next_scan_nid;
e05df3b1 2372
e9cdd307
YH		 2373 if (unlikely(nid >= nm_i->max_nid))
2374 nid = 0;
2375
55008d84 2376 /* Enough entries */
9a4ffdf5 2377 if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
e2374015 2378 return 0;
e05df3b1 2379
4d57b86d 2380 if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS))
e2374015 2381 return 0;
e05df3b1 2382
4ac91242
CY		 2383 if (!mount) {
2384 /* try to find free nids in free_nid_bitmap */
2385 scan_free_nid_bits(sbi);
2386
74986213 2387 if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
e2374015 2388 return 0;
22ad0b6a
JK		 2389 }
2390
55008d84 2391 /* readahead nat pages to be scanned */
4d57b86d 2392 f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES,
26879fb1 2393 META_NAT, true);
e05df3b1 2394
b873b798 2395 down_read(&nm_i->nat_tree_lock);
a5131193 2396
e05df3b1 2397 while (1) {
66e83361
YH		 2398 if (!test_bit_le(NAT_BLOCK_OFFSET(nid),
2399 nm_i->nat_block_bitmap)) {
2400 struct page *page = get_current_nat_page(sbi, nid);
e05df3b1 2401
edc55aaf
JK		 2402 if (IS_ERR(page)) {
2403 ret = PTR_ERR(page);
2404 } else {
2405 ret = scan_nat_page(sbi, page, nid);
2406 f2fs_put_page(page, 1);
2407 }
e2374015
CY		 2408
2409 if (ret) {
2410 up_read(&nm_i->nat_tree_lock);
dcbb4c10 2411 f2fs_err(sbi, "NAT is corrupt, run fsck to fix it");
edc55aaf 2412 return ret;
e2374015 2413 }
66e83361 2414 }
e05df3b1
JK		 2415
2416 nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK));
cfb271d4 2417 if (unlikely(nid >= nm_i->max_nid))
e05df3b1 2418 nid = 0;
55008d84 2419
a6d494b6 2420 if (++i >= FREE_NID_PAGES)
e05df3b1
JK		 2421 break;
2422 }
2423
55008d84
JK		 2424 /* go to the next free nat pages to find free nids abundantly */
2425 nm_i->next_scan_nid = nid;
e05df3b1
JK		 2426
2427 /* find free nids from current sum_pages */
2fbaa25f 2428 scan_curseg_cache(sbi);
dfc08a12 2429
b873b798 2430 up_read(&nm_i->nat_tree_lock);
2db2388f 2431
4d57b86d 2432 f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid),
ea1a29a0 2433 nm_i->ra_nid_pages, META_NAT, false);
e2374015
CY		 2434
2435 return 0;
e05df3b1
JK		 2436}
2437
e2374015 2438int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount)
2411cf5b 2439{
e2374015
CY		 2440 int ret;
2441
2411cf5b 2442 mutex_lock(&NM_I(sbi)->build_lock);
e2374015 2443 ret = __f2fs_build_free_nids(sbi, sync, mount);
2411cf5b 2444 mutex_unlock(&NM_I(sbi)->build_lock);
e2374015
CY		 2445
2446 return ret;
2411cf5b
CY		 2447}
2448
e05df3b1
JK		 2449/*
2450 * If this function returns success, caller can obtain a new nid
2451 * from second parameter of this function.
2452 * The returned nid could be used ino as well as nid when inode is created.
2453 */
4d57b86d 2454bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
e05df3b1
JK		 2455{
2456 struct f2fs_nm_info *nm_i = NM_I(sbi);
2457 struct free_nid *i = NULL;
e05df3b1 2458retry:
55523519 2459 if (time_to_inject(sbi, FAULT_ALLOC_NID)) {
c45d6002 2460 f2fs_show_injection_info(sbi, FAULT_ALLOC_NID);
cb78942b 2461 return false;
55523519 2462 }
7fa750a1 2463
b8559dc2 2464 spin_lock(&nm_i->nid_list_lock);
e05df3b1 2465
04d47e67
CY		 2466 if (unlikely(nm_i->available_nids == 0)) {
2467 spin_unlock(&nm_i->nid_list_lock);
2468 return false;
2469 }
e05df3b1 2470
4d57b86d
CY		 2471 /* We should not use stale free nids created by f2fs_build_free_nids */
2472 if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) {
9a4ffdf5
CY		 2473 f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
2474 i = list_first_entry(&nm_i->free_nid_list,
b8559dc2 2475 struct free_nid, list);
55008d84 2476 *nid = i->nid;
b8559dc2 2477
a0761f63 2478 __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID);
04d47e67 2479 nm_i->available_nids--;
4ac91242 2480
346fe752 2481 update_free_nid_bitmap(sbi, *nid, false, false);
4ac91242 2482
b8559dc2 2483 spin_unlock(&nm_i->nid_list_lock);
55008d84
JK		 2484 return true;
2485 }
b8559dc2 2486 spin_unlock(&nm_i->nid_list_lock);
55008d84
JK		 2487
2488 /* Let's scan nat pages and its caches to get free nids */
f84262b0
JK		 2489 if (!f2fs_build_free_nids(sbi, true, false))
2490 goto retry;
2491 return false;
e05df3b1
JK		 2492}
2493
0a8165d7 2494/*
4d57b86d 2495 * f2fs_alloc_nid() should be called prior to this function.
e05df3b1 2496 */
4d57b86d 2497void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1
JK		 2498{
2499 struct f2fs_nm_info *nm_i = NM_I(sbi);
2500 struct free_nid *i;
2501
b8559dc2 2502 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2503 i = __lookup_free_nid_list(nm_i, nid);
b8559dc2 2504 f2fs_bug_on(sbi, !i);
a0761f63 2505 __remove_free_nid(sbi, i, PREALLOC_NID);
b8559dc2 2506 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2507
2508 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2509}
2510
0a8165d7 2511/*
4d57b86d 2512 * f2fs_alloc_nid() should be called prior to this function.
e05df3b1 2513 */
4d57b86d 2514void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 2515{
49952fa1
JK		 2516 struct f2fs_nm_info *nm_i = NM_I(sbi);
2517 struct free_nid *i;
cf0ee0f0 2518 bool need_free = false;
49952fa1 2519
65985d93
JK		 2520 if (!nid)
2521 return;
2522
b8559dc2 2523 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2524 i = __lookup_free_nid_list(nm_i, nid);
b8559dc2
CY		 2525 f2fs_bug_on(sbi, !i);
2526
4d57b86d 2527 if (!f2fs_available_free_memory(sbi, FREE_NIDS)) {
a0761f63 2528 __remove_free_nid(sbi, i, PREALLOC_NID);
cf0ee0f0 2529 need_free = true;
95630cba 2530 } else {
a0761f63 2531 __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID);
95630cba 2532 }
04d47e67
CY		 2533
2534 nm_i->available_nids++;
2535
346fe752 2536 update_free_nid_bitmap(sbi, nid, true, false);
4ac91242 2537
b8559dc2 2538 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2539
2540 if (need_free)
2541 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2542}
2543
4d57b86d 2544int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
31696580
CY		 2545{
2546 struct f2fs_nm_info *nm_i = NM_I(sbi);
31696580
CY		 2547 int nr = nr_shrink;
2548
9a4ffdf5 2549 if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
ad4edb83
JK		 2550 return 0;
2551
31696580
CY		 2552 if (!mutex_trylock(&nm_i->build_lock))
2553 return 0;
2554
042be373
CY		 2555 while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) {
2556 struct free_nid *i, *next;
2557 unsigned int batch = SHRINK_NID_BATCH_SIZE;
b8559dc2 2558
042be373
CY		 2559 spin_lock(&nm_i->nid_list_lock);
2560 list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) {
2561 if (!nr_shrink || !batch ||
2562 nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
2563 break;
2564 __remove_free_nid(sbi, i, FREE_NID);
2565 kmem_cache_free(free_nid_slab, i);
2566 nr_shrink--;
2567 batch--;
2568 }
2569 spin_unlock(&nm_i->nid_list_lock);
31696580 2570 }
042be373 2571
31696580
CY		 2572 mutex_unlock(&nm_i->build_lock);
2573
2574 return nr - nr_shrink;
2575}
2576
9627a7b3 2577int f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
28cdce04 2578{
28cdce04
CY		 2579 void *src_addr, *dst_addr;
2580 size_t inline_size;
2581 struct page *ipage;
2582 struct f2fs_inode *ri;
2583
4d57b86d 2584 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
9627a7b3
CY		 2585 if (IS_ERR(ipage))
2586 return PTR_ERR(ipage);
28cdce04 2587
e3b4d43f 2588 ri = F2FS_INODE(page);
1eca05aa
YH		 2589 if (ri->i_inline & F2FS_INLINE_XATTR) {
2590 set_inode_flag(inode, FI_INLINE_XATTR);
2591 } else {
91942321 2592 clear_inode_flag(inode, FI_INLINE_XATTR);
e3b4d43f
JK		 2593 goto update_inode;
2594 }
2595
6afc662e
CY		 2596 dst_addr = inline_xattr_addr(inode, ipage);
2597 src_addr = inline_xattr_addr(inode, page);
28cdce04
CY		 2598 inline_size = inline_xattr_size(inode);
2599
bae0ee7a 2600 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
28cdce04 2601 memcpy(dst_addr, src_addr, inline_size);
e3b4d43f 2602update_inode:
4d57b86d 2603 f2fs_update_inode(inode, ipage);
28cdce04 2604 f2fs_put_page(ipage, 1);
9627a7b3 2605 return 0;
28cdce04
CY		 2606}
2607
4d57b86d 2608int f2fs_recover_xattr_data(struct inode *inode, struct page *page)
abb2366c 2609{
4081363f 2610 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
abb2366c 2611 nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid;
87905682
YH		 2612 nid_t new_xnid;
2613 struct dnode_of_data dn;
abb2366c 2614 struct node_info ni;
d260081c 2615 struct page *xpage;
7735730d 2616 int err;
abb2366c 2617
abb2366c
JK		 2618 if (!prev_xnid)
2619 goto recover_xnid;
2620
d260081c 2621 /* 1: invalidate the previous xattr nid */
7735730d
CY		 2622 err = f2fs_get_node_info(sbi, prev_xnid, &ni);
2623 if (err)
2624 return err;
2625
4d57b86d 2626 f2fs_invalidate_blocks(sbi, ni.blk_addr);
000519f2 2627 dec_valid_node_count(sbi, inode, false);
479f40c4 2628 set_node_addr(sbi, &ni, NULL_ADDR, false);
abb2366c
JK		 2629
2630recover_xnid:
d260081c 2631 /* 2: update xattr nid in inode */
4d57b86d 2632 if (!f2fs_alloc_nid(sbi, &new_xnid))
87905682
YH		 2633 return -ENOSPC;
2634
2635 set_new_dnode(&dn, inode, NULL, NULL, new_xnid);
4d57b86d 2636 xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET);
87905682 2637 if (IS_ERR(xpage)) {
4d57b86d 2638 f2fs_alloc_nid_failed(sbi, new_xnid);
87905682
YH		 2639 return PTR_ERR(xpage);
2640 }
2641
4d57b86d
CY		 2642 f2fs_alloc_nid_done(sbi, new_xnid);
2643 f2fs_update_inode_page(inode);
d260081c
CY		 2644
2645 /* 3: update and set xattr node page dirty */
87905682 2646 memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE);
abb2366c 2647
d260081c
CY		 2648 set_page_dirty(xpage);
2649 f2fs_put_page(xpage, 1);
abb2366c 2650
d260081c 2651 return 0;
abb2366c
JK		 2652}
2653
4d57b86d 2654int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
e05df3b1 2655{
58bfaf44 2656 struct f2fs_inode *src, *dst;
e05df3b1
JK		 2657 nid_t ino = ino_of_node(page);
2658 struct node_info old_ni, new_ni;
2659 struct page *ipage;
7735730d 2660 int err;
e05df3b1 2661
7735730d
CY		 2662 err = f2fs_get_node_info(sbi, ino, &old_ni);
2663 if (err)
2664 return err;
e8271fa3
JK		 2665
2666 if (unlikely(old_ni.blk_addr != NULL_ADDR))
2667 return -EINVAL;
e8ea9b3d 2668retry:
300e129c 2669 ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false);
e8ea9b3d 2670 if (!ipage) {
5df7731f 2671 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
e8ea9b3d
JK		 2672 goto retry;
2673 }
e05df3b1 2674
e1c42045 2675 /* Should not use this inode from free nid list */
b8559dc2 2676 remove_free_nid(sbi, ino);
e05df3b1 2677
237c0790
JK		 2678 if (!PageUptodate(ipage))
2679 SetPageUptodate(ipage);
e05df3b1 2680 fill_node_footer(ipage, ino, ino, 0, true);
ef2a0071 2681 set_cold_node(ipage, false);
e05df3b1 2682
58bfaf44
JK		 2683 src = F2FS_INODE(page);
2684 dst = F2FS_INODE(ipage);
e05df3b1 2685
58bfaf44
JK		 2686 memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src);
2687 dst->i_size = 0;
2688 dst->i_blocks = cpu_to_le64(1);
2689 dst->i_links = cpu_to_le32(1);
2690 dst->i_xattr_nid = 0;
7a2af766 2691 dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR);
5c57132e 2692 if (dst->i_inline & F2FS_EXTRA_ATTR) {
7a2af766 2693 dst->i_extra_isize = src->i_extra_isize;
6afc662e 2694
7beb01f7 2695 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
6afc662e
CY		 2696 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2697 i_inline_xattr_size))
2698 dst->i_inline_xattr_size = src->i_inline_xattr_size;
2699
7beb01f7 2700 if (f2fs_sb_has_project_quota(sbi) &&
5c57132e
CY		 2701 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2702 i_projid))
2703 dst->i_projid = src->i_projid;
5cd1f387 2704
7beb01f7 2705 if (f2fs_sb_has_inode_crtime(sbi) &&
5cd1f387
CY		 2706 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2707 i_crtime_nsec)) {
2708 dst->i_crtime = src->i_crtime;
2709 dst->i_crtime_nsec = src->i_crtime_nsec;
2710 }
5c57132e 2711 }
e05df3b1
JK		 2712
2713 new_ni = old_ni;
2714 new_ni.ino = ino;
2715
0abd675e 2716 if (unlikely(inc_valid_node_count(sbi, NULL, true)))
65e5cd0a 2717 WARN_ON(1);
479f40c4 2718 set_node_addr(sbi, &new_ni, NEW_ADDR, false);
e05df3b1 2719 inc_valid_inode_count(sbi);
617deb8c 2720 set_page_dirty(ipage);
e05df3b1
JK		 2721 f2fs_put_page(ipage, 1);
2722 return 0;
2723}
2724
7735730d 2725int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
e05df3b1
JK		 2726 unsigned int segno, struct f2fs_summary_block *sum)
2727{
2728 struct f2fs_node *rn;
2729 struct f2fs_summary *sum_entry;
e05df3b1 2730 block_t addr;
9ecf4b80 2731 int i, idx, last_offset, nrpages;
e05df3b1
JK		 2732
2733 /* scan the node segment */
2734 last_offset = sbi->blocks_per_seg;
2735 addr = START_BLOCK(sbi, segno);
2736 sum_entry = &sum->entries[0];
2737
9ecf4b80 2738 for (i = 0; i < last_offset; i += nrpages, addr += nrpages) {
664ba972 2739 nrpages = min(last_offset - i, BIO_MAX_PAGES);
393ff91f 2740
e1c42045 2741 /* readahead node pages */
4d57b86d 2742 f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true);
e05df3b1 2743
9ecf4b80 2744 for (idx = addr; idx < addr + nrpages; idx++) {
4d57b86d 2745 struct page *page = f2fs_get_tmp_page(sbi, idx);
9af0ff1c 2746
7735730d
CY		 2747 if (IS_ERR(page))
2748 return PTR_ERR(page);
2749
9ecf4b80
CY		 2750 rn = F2FS_NODE(page);
2751 sum_entry->nid = rn->footer.nid;
2752 sum_entry->version = 0;
2753 sum_entry->ofs_in_node = 0;
2754 sum_entry++;
2755 f2fs_put_page(page, 1);
9af0ff1c 2756 }
bac4eef6 2757
9ecf4b80 2758 invalidate_mapping_pages(META_MAPPING(sbi), addr,
bac4eef6 2759 addr + nrpages);
e05df3b1 2760 }
7735730d 2761 return 0;
e05df3b1
JK		 2762}
2763
aec71382 2764static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
e05df3b1
JK		 2765{
2766 struct f2fs_nm_info *nm_i = NM_I(sbi);
2767 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 2768 struct f2fs_journal *journal = curseg->journal;
e05df3b1
JK		 2769 int i;
2770
b7ad7512 2771 down_write(&curseg->journal_rwsem);
dfc08a12 2772 for (i = 0; i < nats_in_cursum(journal); i++) {
e05df3b1
JK		 2773 struct nat_entry *ne;
2774 struct f2fs_nat_entry raw_ne;
dfc08a12 2775 nid_t nid = le32_to_cpu(nid_in_journal(journal, i));
e05df3b1 2776
dfc08a12 2777 raw_ne = nat_in_journal(journal, i);
9be32d72 2778
e05df3b1 2779 ne = __lookup_nat_cache(nm_i, nid);
e05df3b1 2780 if (!ne) {
12f9ef37
YH		 2781 ne = __alloc_nat_entry(nid, true);
2782 __init_nat_entry(nm_i, ne, &raw_ne, true);
e05df3b1 2783 }
04d47e67
CY		 2784
2785 /*
2786 * if a free nat in journal has not been used after last
2787 * checkpoint, we should remove it from available nids,
2788 * since later we will add it again.
2789 */
2790 if (!get_nat_flag(ne, IS_DIRTY) &&
2791 le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) {
2792 spin_lock(&nm_i->nid_list_lock);
2793 nm_i->available_nids--;
2794 spin_unlock(&nm_i->nid_list_lock);
2795 }
2796
e05df3b1 2797 __set_nat_cache_dirty(nm_i, ne);
e05df3b1 2798 }
dfc08a12 2799 update_nats_in_cursum(journal, -i);
b7ad7512 2800 up_write(&curseg->journal_rwsem);
e05df3b1
JK		 2801}
2802
309cc2b6
JK		 2803static void __adjust_nat_entry_set(struct nat_entry_set *nes,
2804 struct list_head *head, int max)
e05df3b1 2805{
309cc2b6 2806 struct nat_entry_set *cur;
e05df3b1 2807
309cc2b6
JK		 2808 if (nes->entry_cnt >= max)
2809 goto add_out;
e05df3b1 2810
309cc2b6
JK		 2811 list_for_each_entry(cur, head, set_list) {
2812 if (cur->entry_cnt >= nes->entry_cnt) {
2813 list_add(&nes->set_list, cur->set_list.prev);
2814 return;
2815 }
aec71382 2816 }
309cc2b6
JK		 2817add_out:
2818 list_add_tail(&nes->set_list, head);
2819}
e05df3b1 2820
9f7e4a2c 2821static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
22ad0b6a
JK		 2822 struct page *page)
2823{
2824 struct f2fs_nm_info *nm_i = NM_I(sbi);
2825 unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK;
2826 struct f2fs_nat_block *nat_blk = page_address(page);
2827 int valid = 0;
37a0ab2a 2828 int i = 0;
22ad0b6a
JK		 2829
2830 if (!enabled_nat_bits(sbi, NULL))
2831 return;
2832
37a0ab2a
FL		 2833 if (nat_index == 0) {
2834 valid = 1;
2835 i = 1;
2836 }
2837 for (; i < NAT_ENTRY_PER_BLOCK; i++) {
36af5f40 2838 if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR)
22ad0b6a
JK		 2839 valid++;
2840 }
2841 if (valid == 0) {
23380b85
JK		 2842 __set_bit_le(nat_index, nm_i->empty_nat_bits);
2843 __clear_bit_le(nat_index, nm_i->full_nat_bits);
22ad0b6a
JK		 2844 return;
2845 }
2846
23380b85 2847 __clear_bit_le(nat_index, nm_i->empty_nat_bits);
22ad0b6a 2848 if (valid == NAT_ENTRY_PER_BLOCK)
23380b85 2849 __set_bit_le(nat_index, nm_i->full_nat_bits);
22ad0b6a 2850 else
23380b85 2851 __clear_bit_le(nat_index, nm_i->full_nat_bits);
22ad0b6a
JK		 2852}
2853
edc55aaf 2854static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
22ad0b6a 2855 struct nat_entry_set *set, struct cp_control *cpc)
309cc2b6
JK		 2856{
2857 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 2858 struct f2fs_journal *journal = curseg->journal;
309cc2b6
JK		 2859 nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK;
2860 bool to_journal = true;
2861 struct f2fs_nat_block *nat_blk;
2862 struct nat_entry *ne, *cur;
2863 struct page *page = NULL;
e05df3b1 2864
aec71382
CY		 2865 /*
2866 * there are two steps to flush nat entries:
2867 * #1, flush nat entries to journal in current hot data summary block.
2868 * #2, flush nat entries to nat page.
2869 */
22ad0b6a
JK		 2870 if (enabled_nat_bits(sbi, cpc) ||
2871 !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
309cc2b6
JK		 2872 to_journal = false;
2873
2874 if (to_journal) {
b7ad7512 2875 down_write(&curseg->journal_rwsem);
309cc2b6
JK		 2876 } else {
2877 page = get_next_nat_page(sbi, start_nid);
edc55aaf
JK		 2878 if (IS_ERR(page))
2879 return PTR_ERR(page);
2880
309cc2b6
JK		 2881 nat_blk = page_address(page);
2882 f2fs_bug_on(sbi, !nat_blk);
2883 }
aec71382 2884
309cc2b6
JK		 2885 /* flush dirty nats in nat entry set */
2886 list_for_each_entry_safe(ne, cur, &set->entry_list, list) {
2887 struct f2fs_nat_entry *raw_ne;
2888 nid_t nid = nat_get_nid(ne);
2889 int offset;
2890
febeca6d 2891 f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR);
aec71382
CY		 2892
2893 if (to_journal) {
4d57b86d 2894 offset = f2fs_lookup_journal_in_cursum(journal,
309cc2b6
JK		 2895 NAT_JOURNAL, nid, 1);
2896 f2fs_bug_on(sbi, offset < 0);
dfc08a12
CY		 2897 raw_ne = &nat_in_journal(journal, offset);
2898 nid_in_journal(journal, offset) = cpu_to_le32(nid);
aec71382 2899 } else {
309cc2b6 2900 raw_ne = &nat_blk->entries[nid - start_nid];
e05df3b1 2901 }
309cc2b6 2902 raw_nat_from_node_info(raw_ne, &ne->ni);
309cc2b6 2903 nat_reset_flag(ne);
0b28b71e 2904 __clear_nat_cache_dirty(NM_I(sbi), set, ne);
04d47e67 2905 if (nat_get_blkaddr(ne) == NULL_ADDR) {
5921aaa1 2906 add_free_nid(sbi, nid, false, true);
4ac91242
CY		 2907 } else {
2908 spin_lock(&NM_I(sbi)->nid_list_lock);
346fe752 2909 update_free_nid_bitmap(sbi, nid, false, false);
04d47e67
CY		 2910 spin_unlock(&NM_I(sbi)->nid_list_lock);
2911 }
309cc2b6 2912 }
e05df3b1 2913
22ad0b6a 2914 if (to_journal) {
b7ad7512 2915 up_write(&curseg->journal_rwsem);
22ad0b6a
JK		 2916 } else {
2917 __update_nat_bits(sbi, start_nid, page);
309cc2b6 2918 f2fs_put_page(page, 1);
22ad0b6a 2919 }
aec71382 2920
59c9081b
YH		 2921 /* Allow dirty nats by node block allocation in write_begin */
2922 if (!set->entry_cnt) {
2923 radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set);
2924 kmem_cache_free(nat_entry_set_slab, set);
2925 }
edc55aaf 2926 return 0;
309cc2b6 2927}
aec71382 2928
309cc2b6
JK		 2929/*
2930 * This function is called during the checkpointing process.
2931 */
edc55aaf 2932int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
309cc2b6
JK		 2933{
2934 struct f2fs_nm_info *nm_i = NM_I(sbi);
2935 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 2936 struct f2fs_journal *journal = curseg->journal;
7aed0d45 2937 struct nat_entry_set *setvec[SETVEC_SIZE];
309cc2b6
JK		 2938 struct nat_entry_set *set, *tmp;
2939 unsigned int found;
2940 nid_t set_idx = 0;
2941 LIST_HEAD(sets);
edc55aaf 2942 int err = 0;
309cc2b6 2943
7f2ecdd8
JK		 2944 /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */
2945 if (enabled_nat_bits(sbi, cpc)) {
2946 down_write(&nm_i->nat_tree_lock);
2947 remove_nats_in_journal(sbi);
2948 up_write(&nm_i->nat_tree_lock);
2949 }
2950
20d047c8 2951 if (!nm_i->dirty_nat_cnt)
edc55aaf 2952 return 0;
a5131193 2953
b873b798 2954 down_write(&nm_i->nat_tree_lock);
a5131193 2955
309cc2b6
JK		 2956 /*
2957 * if there are no enough space in journal to store dirty nat
2958 * entries, remove all entries from journal and merge them
2959 * into nat entry set.
2960 */
900f7362 2961 if (enabled_nat_bits(sbi, cpc) ||
22ad0b6a 2962 !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL))
309cc2b6
JK		 2963 remove_nats_in_journal(sbi);
2964
309cc2b6 2965 while ((found = __gang_lookup_nat_set(nm_i,
7aed0d45 2966 set_idx, SETVEC_SIZE, setvec))) {
309cc2b6
JK		 2967 unsigned idx;
2968 set_idx = setvec[found - 1]->set + 1;
2969 for (idx = 0; idx < found; idx++)
2970 __adjust_nat_entry_set(setvec[idx], &sets,
dfc08a12 2971 MAX_NAT_JENTRIES(journal));
e05df3b1 2972 }
aec71382 2973
309cc2b6 2974 /* flush dirty nats in nat entry set */
edc55aaf
JK		 2975 list_for_each_entry_safe(set, tmp, &sets, set_list) {
2976 err = __flush_nat_entry_set(sbi, set, cpc);
2977 if (err)
2978 break;
2979 }
309cc2b6 2980
b873b798 2981 up_write(&nm_i->nat_tree_lock);
59c9081b 2982 /* Allow dirty nats by node block allocation in write_begin */
edc55aaf
JK		 2983
2984 return err;
e05df3b1
JK		 2985}
2986
22ad0b6a
JK		 2987static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
2988{
2989 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2990 struct f2fs_nm_info *nm_i = NM_I(sbi);
2991 unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE;
2992 unsigned int i;
2993 __u64 cp_ver = cur_cp_version(ckpt);
22ad0b6a
JK		 2994 block_t nat_bits_addr;
2995
2996 if (!enabled_nat_bits(sbi, NULL))
2997 return 0;
2998
df033caf 2999 nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
0b6d4ca0 3000 nm_i->nat_bits = f2fs_kvzalloc(sbi,
acbf054d 3001 nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL);
22ad0b6a
JK		 3002 if (!nm_i->nat_bits)
3003 return -ENOMEM;
3004
3005 nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg -
3006 nm_i->nat_bits_blocks;
3007 for (i = 0; i < nm_i->nat_bits_blocks; i++) {
7735730d
CY		 3008 struct page *page;
3009
3010 page = f2fs_get_meta_page(sbi, nat_bits_addr++);
3b30eb19 3011 if (IS_ERR(page))
7735730d 3012 return PTR_ERR(page);
22ad0b6a
JK		 3013
3014 memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS),
3015 page_address(page), F2FS_BLKSIZE);
3016 f2fs_put_page(page, 1);
3017 }
3018
ced2c7ea 3019 cp_ver |= (cur_cp_crc(ckpt) << 32);
22ad0b6a
JK		 3020 if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) {
3021 disable_nat_bits(sbi, true);
3022 return 0;
3023 }
3024
3025 nm_i->full_nat_bits = nm_i->nat_bits + 8;
3026 nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
3027
dcbb4c10 3028 f2fs_notice(sbi, "Found nat_bits in checkpoint");
22ad0b6a
JK		 3029 return 0;
3030}
3031
bd80a4b9 3032static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi)
7041d5d2
CY		 3033{
3034 struct f2fs_nm_info *nm_i = NM_I(sbi);
3035 unsigned int i = 0;
3036 nid_t nid, last_nid;
3037
3038 if (!enabled_nat_bits(sbi, NULL))
3039 return;
3040
3041 for (i = 0; i < nm_i->nat_blocks; i++) {
3042 i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i);
3043 if (i >= nm_i->nat_blocks)
3044 break;
3045
3046 __set_bit_le(i, nm_i->nat_block_bitmap);
3047
3048 nid = i * NAT_ENTRY_PER_BLOCK;
f6986ede 3049 last_nid = nid + NAT_ENTRY_PER_BLOCK;
7041d5d2 3050
346fe752 3051 spin_lock(&NM_I(sbi)->nid_list_lock);
7041d5d2 3052 for (; nid < last_nid; nid++)
346fe752
CY		 3053 update_free_nid_bitmap(sbi, nid, true, true);
3054 spin_unlock(&NM_I(sbi)->nid_list_lock);
7041d5d2
CY		 3055 }
3056
3057 for (i = 0; i < nm_i->nat_blocks; i++) {
3058 i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i);
3059 if (i >= nm_i->nat_blocks)
3060 break;
3061
3062 __set_bit_le(i, nm_i->nat_block_bitmap);
3063 }
3064}
3065
e05df3b1
JK		 3066static int init_node_manager(struct f2fs_sb_info *sbi)
3067{
3068 struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi);
3069 struct f2fs_nm_info *nm_i = NM_I(sbi);
3070 unsigned char *version_bitmap;
22ad0b6a
JK		 3071 unsigned int nat_segs;
3072 int err;
e05df3b1
JK		 3073
3074 nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr);
3075
3076 /* segment_count_nat includes pair segment so divide to 2. */
3077 nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1;
22ad0b6a
JK		 3078 nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
3079 nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks;
7ee0eeab 3080
b63da15e 3081 /* not used nids: 0, node, meta, (and root counted as valid node) */
04d47e67 3082 nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count -
27cae0bc 3083 F2FS_RESERVED_NODE_NUM;
9a4ffdf5
CY		 3084 nm_i->nid_cnt[FREE_NID] = 0;
3085 nm_i->nid_cnt[PREALLOC_NID] = 0;
e05df3b1 3086 nm_i->nat_cnt = 0;
cdfc41c1 3087 nm_i->ram_thresh = DEF_RAM_THRESHOLD;
ea1a29a0 3088 nm_i->ra_nid_pages = DEF_RA_NID_PAGES;
2304cb0c 3089 nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD;
e05df3b1 3090
8a7ed66a 3091 INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC);
9a4ffdf5 3092 INIT_LIST_HEAD(&nm_i->free_nid_list);
769ec6e5
JK		 3093 INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO);
3094 INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO);
e05df3b1 3095 INIT_LIST_HEAD(&nm_i->nat_entries);
22969158 3096 spin_lock_init(&nm_i->nat_list_lock);
e05df3b1
JK		 3097
3098 mutex_init(&nm_i->build_lock);
b8559dc2 3099 spin_lock_init(&nm_i->nid_list_lock);
b873b798 3100 init_rwsem(&nm_i->nat_tree_lock);
e05df3b1 3101
e05df3b1 3102 nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid);
79b5793b 3103 nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP);
e05df3b1
JK		 3104 version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP);
3105 if (!version_bitmap)
3106 return -EFAULT;
3107
79b5793b
AG		 3108 nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size,
3109 GFP_KERNEL);
3110 if (!nm_i->nat_bitmap)
3111 return -ENOMEM;
599a09b2 3112
22ad0b6a
JK		 3113 err = __get_nat_bitmaps(sbi);
3114 if (err)
3115 return err;
3116
599a09b2
CY		 3117#ifdef CONFIG_F2FS_CHECK_FS
3118 nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size,
3119 GFP_KERNEL);
3120 if (!nm_i->nat_bitmap_mir)
3121 return -ENOMEM;
3122#endif
3123
e05df3b1
JK		 3124 return 0;
3125}
3126
9f7e4a2c 3127static int init_free_nid_cache(struct f2fs_sb_info *sbi)
4ac91242
CY		 3128{
3129 struct f2fs_nm_info *nm_i = NM_I(sbi);
bb1105e4 3130 int i;
4ac91242 3131
026f0507 3132 nm_i->free_nid_bitmap =
0b6d4ca0
EB		 3133 f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *),
3134 nm_i->nat_blocks),
3135 GFP_KERNEL);
4ac91242
CY		 3136 if (!nm_i->free_nid_bitmap)
3137 return -ENOMEM;
3138
bb1105e4
JK		 3139 for (i = 0; i < nm_i->nat_blocks; i++) {
3140 nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi,
e15d54d5 3141 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL);
68c43a23 3142 if (!nm_i->free_nid_bitmap[i])
bb1105e4
JK		 3143 return -ENOMEM;
3144 }
3145
628b3d14 3146 nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8,
4ac91242
CY		 3147 GFP_KERNEL);
3148 if (!nm_i->nat_block_bitmap)
3149 return -ENOMEM;
586d1492 3150
9d2a789c
KC		 3151 nm_i->free_nid_count =
3152 f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short),
3153 nm_i->nat_blocks),
3154 GFP_KERNEL);
586d1492
CY		 3155 if (!nm_i->free_nid_count)
3156 return -ENOMEM;
4ac91242
CY		 3157 return 0;
3158}
3159
4d57b86d 3160int f2fs_build_node_manager(struct f2fs_sb_info *sbi)
e05df3b1
JK		 3161{
3162 int err;
3163
acbf054d
CY		 3164 sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info),
3165 GFP_KERNEL);
e05df3b1
JK		 3166 if (!sbi->nm_info)
3167 return -ENOMEM;
3168
3169 err = init_node_manager(sbi);
3170 if (err)
3171 return err;
3172
4ac91242
CY		 3173 err = init_free_nid_cache(sbi);
3174 if (err)
3175 return err;
3176
7041d5d2
CY		 3177 /* load free nid status from nat_bits table */
3178 load_free_nid_bitmap(sbi);
3179
e2374015 3180 return f2fs_build_free_nids(sbi, true, true);
e05df3b1
JK		 3181}
3182
4d57b86d 3183void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi)
e05df3b1
JK		 3184{
3185 struct f2fs_nm_info *nm_i = NM_I(sbi);
3186 struct free_nid *i, *next_i;
3187 struct nat_entry *natvec[NATVEC_SIZE];
7aed0d45 3188 struct nat_entry_set *setvec[SETVEC_SIZE];
e05df3b1
JK		 3189 nid_t nid = 0;
3190 unsigned int found;
3191
3192 if (!nm_i)
3193 return;
3194
3195 /* destroy free nid list */
b8559dc2 3196 spin_lock(&nm_i->nid_list_lock);
9a4ffdf5 3197 list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) {
a0761f63 3198 __remove_free_nid(sbi, i, FREE_NID);
b8559dc2 3199 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0 3200 kmem_cache_free(free_nid_slab, i);
b8559dc2 3201 spin_lock(&nm_i->nid_list_lock);
e05df3b1 3202 }
9a4ffdf5
CY		 3203 f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]);
3204 f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]);
3205 f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list));
b8559dc2 3206 spin_unlock(&nm_i->nid_list_lock);
e05df3b1
JK		 3207
3208 /* destroy nat cache */
b873b798 3209 down_write(&nm_i->nat_tree_lock);
e05df3b1
JK		 3210 while ((found = __gang_lookup_nat_cache(nm_i,
3211 nid, NATVEC_SIZE, natvec))) {
3212 unsigned idx;
7aed0d45 3213
b6ce391e 3214 nid = nat_get_nid(natvec[found - 1]) + 1;
22969158
CY		 3215 for (idx = 0; idx < found; idx++) {
3216 spin_lock(&nm_i->nat_list_lock);
3217 list_del(&natvec[idx]->list);
3218 spin_unlock(&nm_i->nat_list_lock);
3219
b6ce391e 3220 __del_from_nat_cache(nm_i, natvec[idx]);
22969158 3221 }
e05df3b1 3222 }
9850cf4a 3223 f2fs_bug_on(sbi, nm_i->nat_cnt);
7aed0d45
JK		 3224
3225 /* destroy nat set cache */
3226 nid = 0;
3227 while ((found = __gang_lookup_nat_set(nm_i,
3228 nid, SETVEC_SIZE, setvec))) {
3229 unsigned idx;
3230
3231 nid = setvec[found - 1]->set + 1;
3232 for (idx = 0; idx < found; idx++) {
3233 /* entry_cnt is not zero, when cp_error was occurred */
3234 f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list));
3235 radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set);
3236 kmem_cache_free(nat_entry_set_slab, setvec[idx]);
3237 }
3238 }
b873b798 3239 up_write(&nm_i->nat_tree_lock);
e05df3b1 3240
4ac91242 3241 kvfree(nm_i->nat_block_bitmap);
bb1105e4
JK		 3242 if (nm_i->free_nid_bitmap) {
3243 int i;
3244
3245 for (i = 0; i < nm_i->nat_blocks; i++)
3246 kvfree(nm_i->free_nid_bitmap[i]);
5222595d 3247 kvfree(nm_i->free_nid_bitmap);
bb1105e4 3248 }
586d1492 3249 kvfree(nm_i->free_nid_count);
4ac91242 3250
5222595d
JK		 3251 kvfree(nm_i->nat_bitmap);
3252 kvfree(nm_i->nat_bits);
599a09b2 3253#ifdef CONFIG_F2FS_CHECK_FS
5222595d 3254 kvfree(nm_i->nat_bitmap_mir);
599a09b2 3255#endif
e05df3b1 3256 sbi->nm_info = NULL;
5222595d 3257 kvfree(nm_i);
e05df3b1
JK		 3258}
3259
4d57b86d 3260int __init f2fs_create_node_manager_caches(void)
e05df3b1 3261{
98510003 3262 nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry",
e8512d2e 3263 sizeof(struct nat_entry));
e05df3b1 3264 if (!nat_entry_slab)
aec71382 3265 goto fail;
e05df3b1 3266
98510003 3267 free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid",
e8512d2e 3268 sizeof(struct free_nid));
aec71382 3269 if (!free_nid_slab)
ce3e6d25 3270 goto destroy_nat_entry;
aec71382 3271
98510003 3272 nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set",
aec71382
CY		 3273 sizeof(struct nat_entry_set));
3274 if (!nat_entry_set_slab)
ce3e6d25 3275 goto destroy_free_nid;
50fa53ec 3276
98510003 3277 fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry",
50fa53ec
CY		 3278 sizeof(struct fsync_node_entry));
3279 if (!fsync_node_entry_slab)
3280 goto destroy_nat_entry_set;
e05df3b1 3281 return 0;
aec71382 3282
50fa53ec
CY		 3283destroy_nat_entry_set:
3284 kmem_cache_destroy(nat_entry_set_slab);
ce3e6d25 3285destroy_free_nid:
aec71382 3286 kmem_cache_destroy(free_nid_slab);
ce3e6d25 3287destroy_nat_entry:
aec71382
CY		 3288 kmem_cache_destroy(nat_entry_slab);
3289fail:
3290 return -ENOMEM;
e05df3b1
JK		 3291}
3292
4d57b86d 3293void f2fs_destroy_node_manager_caches(void)
e05df3b1 3294{
50fa53ec 3295 kmem_cache_destroy(fsync_node_entry_slab);
aec71382 3296 kmem_cache_destroy(nat_entry_set_slab);
e05df3b1
JK		 3297 kmem_cache_destroy(free_nid_slab);
3298 kmem_cache_destroy(nat_entry_slab);
3299}
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