projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[linux-2.6-block.git] / fs / f2fs / node.c
CommitLineData
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>
4034247a 11#include <linux/sched/mm.h>
e05df3b1
JK		 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"
52118743 20#include "iostat.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);
95fa90c9 39 f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE);
10f966bb 40 return -EFSCORRUPTED;
a4f843bd
JK		 41 }
42 return 0;
43}
44
4d57b86d 45bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type)
cdfc41c1 46{
6fb03f3a 47 struct f2fs_nm_info *nm_i = NM_I(sbi);
d6d2b491 48 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
cdfc41c1 49 struct sysinfo val;
e5e7ea3c 50 unsigned long avail_ram;
cdfc41c1 51 unsigned long mem_size = 0;
6fb03f3a 52 bool res = false;
cdfc41c1 53
d6d2b491
ST		 54 if (!nm_i)
55 return true;
56
cdfc41c1 57 si_meminfo(&val);
e5e7ea3c
JK		 58
59 /* only uses low memory */
60 avail_ram = val.totalram - val.totalhigh;
61
429511cd 62 /*
71644dff 63 * give 25%, 25%, 50%, 50%, 25%, 25% memory for each components respectively
429511cd 64 */
6fb03f3a 65 if (type == FREE_NIDS) {
9a4ffdf5 66 mem_size = (nm_i->nid_cnt[FREE_NID] *
b8559dc2 67 sizeof(struct free_nid)) >> PAGE_SHIFT;
e5e7ea3c 68 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
6fb03f3a 69 } else if (type == NAT_ENTRIES) {
a95ba66a
JK		 70 mem_size = (nm_i->nat_cnt[TOTAL_NAT] *
71 sizeof(struct nat_entry)) >> PAGE_SHIFT;
e5e7ea3c 72 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
e589c2c4
JK		 73 if (excess_cached_nats(sbi))
74 res = false;
a1257023
JK		 75 } else if (type == DIRTY_DENTS) {
76 if (sbi->sb->s_bdi->wb.dirty_exceeded)
77 return false;
78 mem_size = get_pages(sbi, F2FS_DIRTY_DENTS);
79 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
e5e7ea3c
JK		 80 } else if (type == INO_ENTRIES) {
81 int i;
82
39d787be 83 for (i = 0; i < MAX_INO_ENTRY; i++)
8f73cbb7
KM		 84 mem_size += sbi->im[i].ino_num *
85 sizeof(struct ino_entry);
86 mem_size >>= PAGE_SHIFT;
e5e7ea3c 87 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
71644dff
JK		 88 } else if (type == READ_EXTENT_CACHE || type == AGE_EXTENT_CACHE) {
89 enum extent_type etype = type == READ_EXTENT_CACHE ?
90 EX_READ : EX_BLOCK_AGE;
91 struct extent_tree_info *eti = &sbi->extent_tree[etype];
e7547dac
JK		 92
93 mem_size = (atomic_read(&eti->total_ext_tree) *
7441ccef 94 sizeof(struct extent_tree) +
e7547dac 95 atomic_read(&eti->total_ext_node) *
09cbfeaf 96 sizeof(struct extent_node)) >> PAGE_SHIFT;
71644dff 97 res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
d6d2b491
ST		 98 } else if (type == DISCARD_CACHE) {
99 mem_size = (atomic_read(&dcc->discard_cmd_cnt) *
100 sizeof(struct discard_cmd)) >> PAGE_SHIFT;
101 res = mem_size < (avail_ram * nm_i->ram_thresh / 100);
6ce19aff
CY		 102 } else if (type == COMPRESS_PAGE) {
103#ifdef CONFIG_F2FS_FS_COMPRESSION
104 unsigned long free_ram = val.freeram;
105
106 /*
107 * free memory is lower than watermark or cached page count
108 * exceed threshold, deny caching compress page.
109 */
110 res = (free_ram > avail_ram * sbi->compress_watermark / 100) &&
111 (COMPRESS_MAPPING(sbi)->nrpages <
112 free_ram * sbi->compress_percent / 100);
113#else
114 res = false;
115#endif
1e84371f 116 } else {
1663cae4
JK		 117 if (!sbi->sb->s_bdi->wb.dirty_exceeded)
118 return true;
6fb03f3a
JK		 119 }
120 return res;
cdfc41c1
JK		 121}
122
e05df3b1
JK		 123static void clear_node_page_dirty(struct page *page)
124{
e05df3b1 125 if (PageDirty(page)) {
5ec2d99d 126 f2fs_clear_page_cache_dirty_tag(page);
e05df3b1 127 clear_page_dirty_for_io(page);
aec2f729 128 dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);
e05df3b1
JK		 129 }
130 ClearPageUptodate(page);
131}
132
133static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
134{
3acc4522 135 return f2fs_get_meta_page_retry(sbi, current_nat_addr(sbi, nid));
e05df3b1
JK		 136}
137
138static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid)
139{
140 struct page *src_page;
141 struct page *dst_page;
e05df3b1
JK		 142 pgoff_t dst_off;
143 void *src_addr;
144 void *dst_addr;
145 struct f2fs_nm_info *nm_i = NM_I(sbi);
146
80551d17 147 dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid));
e05df3b1
JK		 148
149 /* get current nat block page with lock */
80551d17 150 src_page = get_current_nat_page(sbi, nid);
edc55aaf
JK		 151 if (IS_ERR(src_page))
152 return src_page;
4d57b86d 153 dst_page = f2fs_grab_meta_page(sbi, dst_off);
9850cf4a 154 f2fs_bug_on(sbi, PageDirty(src_page));
e05df3b1
JK		 155
156 src_addr = page_address(src_page);
157 dst_addr = page_address(dst_page);
09cbfeaf 158 memcpy(dst_addr, src_addr, PAGE_SIZE);
e05df3b1
JK		 159 set_page_dirty(dst_page);
160 f2fs_put_page(src_page, 1);
161
162 set_to_next_nat(nm_i, nid);
163
164 return dst_page;
165}
166
32410577
CY		 167static struct nat_entry *__alloc_nat_entry(struct f2fs_sb_info *sbi,
168 nid_t nid, bool no_fail)
12f9ef37
YH		 169{
170 struct nat_entry *new;
171
32410577
CY		 172 new = f2fs_kmem_cache_alloc(nat_entry_slab,
173 GFP_F2FS_ZERO, no_fail, sbi);
12f9ef37
YH		 174 if (new) {
175 nat_set_nid(new, nid);
176 nat_reset_flag(new);
177 }
178 return new;
179}
180
181static void __free_nat_entry(struct nat_entry *e)
182{
183 kmem_cache_free(nat_entry_slab, e);
184}
185
186/* must be locked by nat_tree_lock */
187static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i,
188 struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail)
189{
190 if (no_fail)
191 f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne);
192 else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne))
193 return NULL;
194
195 if (raw_ne)
196 node_info_from_raw_nat(&ne->ni, raw_ne);
22969158
CY		 197
198 spin_lock(&nm_i->nat_list_lock);
12f9ef37 199 list_add_tail(&ne->list, &nm_i->nat_entries);
22969158
CY		 200 spin_unlock(&nm_i->nat_list_lock);
201
a95ba66a
JK		 202 nm_i->nat_cnt[TOTAL_NAT]++;
203 nm_i->nat_cnt[RECLAIMABLE_NAT]++;
12f9ef37
YH		 204 return ne;
205}
206
e05df3b1
JK		 207static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n)
208{
22969158
CY		 209 struct nat_entry *ne;
210
211 ne = radix_tree_lookup(&nm_i->nat_root, n);
212
213 /* for recent accessed nat entry, move it to tail of lru list */
214 if (ne && !get_nat_flag(ne, IS_DIRTY)) {
215 spin_lock(&nm_i->nat_list_lock);
216 if (!list_empty(&ne->list))
217 list_move_tail(&ne->list, &nm_i->nat_entries);
218 spin_unlock(&nm_i->nat_list_lock);
219 }
220
221 return ne;
e05df3b1
JK		 222}
223
224static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i,
225 nid_t start, unsigned int nr, struct nat_entry **ep)
226{
227 return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr);
228}
229
230static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e)
231{
e05df3b1 232 radix_tree_delete(&nm_i->nat_root, nat_get_nid(e));
a95ba66a
JK		 233 nm_i->nat_cnt[TOTAL_NAT]--;
234 nm_i->nat_cnt[RECLAIMABLE_NAT]--;
12f9ef37 235 __free_nat_entry(e);
e05df3b1
JK		 236}
237
780de47c
CY		 238static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i,
239 struct nat_entry *ne)
309cc2b6
JK		 240{
241 nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid);
242 struct nat_entry_set *head;
243
309cc2b6
JK		 244 head = radix_tree_lookup(&nm_i->nat_set_root, set);
245 if (!head) {
32410577
CY		 246 head = f2fs_kmem_cache_alloc(nat_entry_set_slab,
247 GFP_NOFS, true, NULL);
309cc2b6
JK		 248
249 INIT_LIST_HEAD(&head->entry_list);
250 INIT_LIST_HEAD(&head->set_list);
251 head->set = set;
252 head->entry_cnt = 0;
9be32d72 253 f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head);
309cc2b6 254 }
780de47c
CY		 255 return head;
256}
257
258static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i,
259 struct nat_entry *ne)
260{
261 struct nat_entry_set *head;
262 bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR;
263
264 if (!new_ne)
265 head = __grab_nat_entry_set(nm_i, ne);
266
267 /*
268 * update entry_cnt in below condition:
269 * 1. update NEW_ADDR to valid block address;
270 * 2. update old block address to new one;
271 */
272 if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) ||
273 !get_nat_flag(ne, IS_DIRTY)))
274 head->entry_cnt++;
275
276 set_nat_flag(ne, IS_PREALLOC, new_ne);
febeca6d
CY		 277
278 if (get_nat_flag(ne, IS_DIRTY))
279 goto refresh_list;
280
a95ba66a
JK		 281 nm_i->nat_cnt[DIRTY_NAT]++;
282 nm_i->nat_cnt[RECLAIMABLE_NAT]--;
309cc2b6 283 set_nat_flag(ne, IS_DIRTY, true);
febeca6d 284refresh_list:
22969158 285 spin_lock(&nm_i->nat_list_lock);
780de47c 286 if (new_ne)
febeca6d
CY		 287 list_del_init(&ne->list);
288 else
289 list_move_tail(&ne->list, &head->entry_list);
22969158 290 spin_unlock(&nm_i->nat_list_lock);
309cc2b6
JK		 291}
292
293static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i,
0b28b71e 294 struct nat_entry_set *set, struct nat_entry *ne)
309cc2b6 295{
22969158 296 spin_lock(&nm_i->nat_list_lock);
0b28b71e 297 list_move_tail(&ne->list, &nm_i->nat_entries);
22969158
CY		 298 spin_unlock(&nm_i->nat_list_lock);
299
0b28b71e
KM		 300 set_nat_flag(ne, IS_DIRTY, false);
301 set->entry_cnt--;
a95ba66a
JK		 302 nm_i->nat_cnt[DIRTY_NAT]--;
303 nm_i->nat_cnt[RECLAIMABLE_NAT]++;
309cc2b6
JK		 304}
305
306static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i,
307 nid_t start, unsigned int nr, struct nat_entry_set **ep)
308{
309 return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep,
310 start, nr);
311}
312
50fa53ec
CY		 313bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page)
314{
315 return NODE_MAPPING(sbi) == page->mapping &&
316 IS_DNODE(page) && is_cold_node(page);
317}
318
319void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi)
320{
321 spin_lock_init(&sbi->fsync_node_lock);
322 INIT_LIST_HEAD(&sbi->fsync_node_list);
323 sbi->fsync_seg_id = 0;
324 sbi->fsync_node_num = 0;
325}
326
327static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi,
328 struct page *page)
329{
330 struct fsync_node_entry *fn;
331 unsigned long flags;
332 unsigned int seq_id;
333
32410577
CY		 334 fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab,
335 GFP_NOFS, true, NULL);
50fa53ec
CY		 336
337 get_page(page);
338 fn->page = page;
339 INIT_LIST_HEAD(&fn->list);
340
341 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
342 list_add_tail(&fn->list, &sbi->fsync_node_list);
343 fn->seq_id = sbi->fsync_seg_id++;
344 seq_id = fn->seq_id;
345 sbi->fsync_node_num++;
346 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
347
348 return seq_id;
349}
350
351void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page)
352{
353 struct fsync_node_entry *fn;
354 unsigned long flags;
355
356 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
357 list_for_each_entry(fn, &sbi->fsync_node_list, list) {
358 if (fn->page == page) {
359 list_del(&fn->list);
360 sbi->fsync_node_num--;
361 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
362 kmem_cache_free(fsync_node_entry_slab, fn);
363 put_page(page);
364 return;
365 }
366 }
367 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
368 f2fs_bug_on(sbi, 1);
369}
370
371void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi)
372{
373 unsigned long flags;
374
375 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
376 sbi->fsync_seg_id = 0;
377 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
378}
379
4d57b86d 380int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1
JK		 381{
382 struct f2fs_nm_info *nm_i = NM_I(sbi);
383 struct nat_entry *e;
2dcf51ab 384 bool need = false;
e05df3b1 385
e4544b63 386 f2fs_down_read(&nm_i->nat_tree_lock);
e05df3b1 387 e = __lookup_nat_cache(nm_i, nid);
2dcf51ab
JK		 388 if (e) {
389 if (!get_nat_flag(e, IS_CHECKPOINTED) &&
390 !get_nat_flag(e, HAS_FSYNCED_INODE))
391 need = true;
392 }
e4544b63 393 f2fs_up_read(&nm_i->nat_tree_lock);
2dcf51ab 394 return need;
e05df3b1
JK		 395}
396
4d57b86d 397bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid)
479f40c4
JK		 398{
399 struct f2fs_nm_info *nm_i = NM_I(sbi);
400 struct nat_entry *e;
2dcf51ab 401 bool is_cp = true;
479f40c4 402
e4544b63 403 f2fs_down_read(&nm_i->nat_tree_lock);
2dcf51ab
JK		 404 e = __lookup_nat_cache(nm_i, nid);
405 if (e && !get_nat_flag(e, IS_CHECKPOINTED))
406 is_cp = false;
e4544b63 407 f2fs_up_read(&nm_i->nat_tree_lock);
2dcf51ab 408 return is_cp;
479f40c4
JK		 409}
410
4d57b86d 411bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino)
b6fe5873
JK		 412{
413 struct f2fs_nm_info *nm_i = NM_I(sbi);
414 struct nat_entry *e;
88bd02c9 415 bool need_update = true;
b6fe5873 416
e4544b63 417 f2fs_down_read(&nm_i->nat_tree_lock);
88bd02c9
JK		 418 e = __lookup_nat_cache(nm_i, ino);
419 if (e && get_nat_flag(e, HAS_LAST_FSYNC) &&
420 (get_nat_flag(e, IS_CHECKPOINTED) ||
421 get_nat_flag(e, HAS_FSYNCED_INODE)))
422 need_update = false;
e4544b63 423 f2fs_up_read(&nm_i->nat_tree_lock);
88bd02c9 424 return need_update;
b6fe5873
JK		 425}
426
12f9ef37 427/* must be locked by nat_tree_lock */
1515aef0 428static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid,
e05df3b1
JK		 429 struct f2fs_nat_entry *ne)
430{
1515aef0 431 struct f2fs_nm_info *nm_i = NM_I(sbi);
12f9ef37 432 struct nat_entry *new, *e;
9be32d72 433
0df035c7 434 /* Let's mitigate lock contention of nat_tree_lock during checkpoint */
e4544b63 435 if (f2fs_rwsem_is_locked(&sbi->cp_global_sem))
0df035c7
JK		 436 return;
437
32410577 438 new = __alloc_nat_entry(sbi, nid, false);
12f9ef37
YH		 439 if (!new)
440 return;
441
e4544b63 442 f2fs_down_write(&nm_i->nat_tree_lock);
e05df3b1 443 e = __lookup_nat_cache(nm_i, nid);
12f9ef37
YH		 444 if (!e)
445 e = __init_nat_entry(nm_i, new, ne, false);
446 else
0c0b471e
EB		 447 f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) ||
448 nat_get_blkaddr(e) !=
449 le32_to_cpu(ne->block_addr) ||
1515aef0 450 nat_get_version(e) != ne->version);
e4544b63 451 f2fs_up_write(&nm_i->nat_tree_lock);
12f9ef37
YH		 452 if (e != new)
453 __free_nat_entry(new);
e05df3b1
JK		 454}
455
456static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
479f40c4 457 block_t new_blkaddr, bool fsync_done)
e05df3b1
JK		 458{
459 struct f2fs_nm_info *nm_i = NM_I(sbi);
460 struct nat_entry *e;
32410577 461 struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true);
9be32d72 462
e4544b63 463 f2fs_down_write(&nm_i->nat_tree_lock);
e05df3b1
JK		 464 e = __lookup_nat_cache(nm_i, ni->nid);
465 if (!e) {
12f9ef37 466 e = __init_nat_entry(nm_i, new, NULL, true);
5c27f4ee 467 copy_node_info(&e->ni, ni);
9850cf4a 468 f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR);
e05df3b1
JK		 469 } else if (new_blkaddr == NEW_ADDR) {
470 /*
471 * when nid is reallocated,
472 * previous nat entry can be remained in nat cache.
473 * So, reinitialize it with new information.
474 */
5c27f4ee 475 copy_node_info(&e->ni, ni);
9850cf4a 476 f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR);
e05df3b1 477 }
12f9ef37
YH		 478 /* let's free early to reduce memory consumption */
479 if (e != new)
480 __free_nat_entry(new);
e05df3b1 481
e05df3b1 482 /* sanity check */
9850cf4a
JK		 483 f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr);
484 f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR &&
e05df3b1 485 new_blkaddr == NULL_ADDR);
9850cf4a 486 f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR &&
e05df3b1 487 new_blkaddr == NEW_ADDR);
93770ab7 488 f2fs_bug_on(sbi, __is_valid_data_blkaddr(nat_get_blkaddr(e)) &&
e05df3b1
JK		 489 new_blkaddr == NEW_ADDR);
490
e1c42045 491 /* increment version no as node is removed */
e05df3b1
JK		 492 if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) {
493 unsigned char version = nat_get_version(e);
5f029c04 494
e05df3b1
JK		 495 nat_set_version(e, inc_node_version(version));
496 }
497
498 /* change address */
499 nat_set_blkaddr(e, new_blkaddr);
93770ab7 500 if (!__is_valid_data_blkaddr(new_blkaddr))
88bd02c9 501 set_nat_flag(e, IS_CHECKPOINTED, false);
e05df3b1 502 __set_nat_cache_dirty(nm_i, e);
479f40c4
JK		 503
504 /* update fsync_mark if its inode nat entry is still alive */
d5b692b7
CY		 505 if (ni->nid != ni->ino)
506 e = __lookup_nat_cache(nm_i, ni->ino);
88bd02c9
JK		 507 if (e) {
508 if (fsync_done && ni->nid == ni->ino)
509 set_nat_flag(e, HAS_FSYNCED_INODE, true);
510 set_nat_flag(e, HAS_LAST_FSYNC, fsync_done);
511 }
e4544b63 512 f2fs_up_write(&nm_i->nat_tree_lock);
e05df3b1
JK		 513}
514
4d57b86d 515int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink)
e05df3b1
JK		 516{
517 struct f2fs_nm_info *nm_i = NM_I(sbi);
1b38dc8e 518 int nr = nr_shrink;
e05df3b1 519
e4544b63 520 if (!f2fs_down_write_trylock(&nm_i->nat_tree_lock))
b873b798 521 return 0;
e05df3b1 522
22969158
CY		 523 spin_lock(&nm_i->nat_list_lock);
524 while (nr_shrink) {
e05df3b1 525 struct nat_entry *ne;
22969158
CY		 526
527 if (list_empty(&nm_i->nat_entries))
528 break;
529
e05df3b1
JK		 530 ne = list_first_entry(&nm_i->nat_entries,
531 struct nat_entry, list);
22969158
CY		 532 list_del(&ne->list);
533 spin_unlock(&nm_i->nat_list_lock);
534
e05df3b1
JK		 535 __del_from_nat_cache(nm_i, ne);
536 nr_shrink--;
22969158
CY		 537
538 spin_lock(&nm_i->nat_list_lock);
e05df3b1 539 }
22969158
CY		 540 spin_unlock(&nm_i->nat_list_lock);
541
e4544b63 542 f2fs_up_write(&nm_i->nat_tree_lock);
1b38dc8e 543 return nr - nr_shrink;
e05df3b1
JK		 544}
545
7735730d 546int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
a9419b63 547 struct node_info *ni, bool checkpoint_context)
e05df3b1
JK		 548{
549 struct f2fs_nm_info *nm_i = NM_I(sbi);
550 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 551 struct f2fs_journal *journal = curseg->journal;
e05df3b1
JK		 552 nid_t start_nid = START_NID(nid);
553 struct f2fs_nat_block *nat_blk;
554 struct page *page = NULL;
555 struct f2fs_nat_entry ne;
556 struct nat_entry *e;
66a82d1f 557 pgoff_t index;
93770ab7 558 block_t blkaddr;
e05df3b1
JK		 559 int i;
560
561 ni->nid = nid;
2eeb0dce 562retry:
e05df3b1 563 /* Check nat cache */
e4544b63 564 f2fs_down_read(&nm_i->nat_tree_lock);
e05df3b1
JK		 565 e = __lookup_nat_cache(nm_i, nid);
566 if (e) {
567 ni->ino = nat_get_ino(e);
568 ni->blk_addr = nat_get_blkaddr(e);
569 ni->version = nat_get_version(e);
e4544b63 570 f2fs_up_read(&nm_i->nat_tree_lock);
7735730d 571 return 0;
1515aef0 572 }
e05df3b1 573
2eeb0dce
JK		 574 /*
575 * Check current segment summary by trying to grab journal_rwsem first.
576 * This sem is on the critical path on the checkpoint requiring the above
577 * nat_tree_lock. Therefore, we should retry, if we failed to grab here
578 * while not bothering checkpoint.
579 */
e4544b63 580 if (!f2fs_rwsem_is_locked(&sbi->cp_global_sem) || checkpoint_context) {
2eeb0dce 581 down_read(&curseg->journal_rwsem);
e4544b63 582 } else if (f2fs_rwsem_is_contended(&nm_i->nat_tree_lock) ||
a9419b63 583 !down_read_trylock(&curseg->journal_rwsem)) {
e4544b63 584 f2fs_up_read(&nm_i->nat_tree_lock);
2eeb0dce
JK		 585 goto retry;
586 }
3547ea96 587
4d57b86d 588 i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0);
e05df3b1 589 if (i >= 0) {
dfc08a12 590 ne = nat_in_journal(journal, i);
e05df3b1
JK		 591 node_info_from_raw_nat(ni, &ne);
592 }
544b53da 593 up_read(&curseg->journal_rwsem);
66a82d1f 594 if (i >= 0) {
e4544b63 595 f2fs_up_read(&nm_i->nat_tree_lock);
e05df3b1 596 goto cache;
66a82d1f 597 }
e05df3b1
JK		 598
599 /* Fill node_info from nat page */
66a82d1f 600 index = current_nat_addr(sbi, nid);
e4544b63 601 f2fs_up_read(&nm_i->nat_tree_lock);
66a82d1f 602
4d57b86d 603 page = f2fs_get_meta_page(sbi, index);
7735730d
CY		 604 if (IS_ERR(page))
605 return PTR_ERR(page);
606
e05df3b1
JK		 607 nat_blk = (struct f2fs_nat_block *)page_address(page);
608 ne = nat_blk->entries[nid - start_nid];
609 node_info_from_raw_nat(ni, &ne);
610 f2fs_put_page(page, 1);
611cache:
93770ab7
CY		 612 blkaddr = le32_to_cpu(ne.block_addr);
613 if (__is_valid_data_blkaddr(blkaddr) &&
614 !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE))
615 return -EFAULT;
616
e05df3b1 617 /* cache nat entry */
1515aef0 618 cache_nat_entry(sbi, nid, &ne);
7735730d 619 return 0;
e05df3b1
JK		 620}
621
79344efb
JK		 622/*
623 * readahead MAX_RA_NODE number of node pages.
624 */
4d57b86d 625static void f2fs_ra_node_pages(struct page *parent, int start, int n)
79344efb
JK		 626{
627 struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
628 struct blk_plug plug;
629 int i, end;
630 nid_t nid;
631
632 blk_start_plug(&plug);
633
634 /* Then, try readahead for siblings of the desired node */
635 end = start + n;
d7e9a903 636 end = min(end, (int)NIDS_PER_BLOCK);
79344efb
JK		 637 for (i = start; i < end; i++) {
638 nid = get_nid(parent, i, false);
4d57b86d 639 f2fs_ra_node_page(sbi, nid);
79344efb
JK		 640 }
641
642 blk_finish_plug(&plug);
643}
644
4d57b86d 645pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs)
3cf45747
CY		 646{
647 const long direct_index = ADDRS_PER_INODE(dn->inode);
d02a6e61
CY		 648 const long direct_blks = ADDRS_PER_BLOCK(dn->inode);
649 const long indirect_blks = ADDRS_PER_BLOCK(dn->inode) * NIDS_PER_BLOCK;
650 unsigned int skipped_unit = ADDRS_PER_BLOCK(dn->inode);
3cf45747
CY		 651 int cur_level = dn->cur_level;
652 int max_level = dn->max_level;
653 pgoff_t base = 0;
654
655 if (!dn->max_level)
656 return pgofs + 1;
657
658 while (max_level-- > cur_level)
659 skipped_unit *= NIDS_PER_BLOCK;
660
661 switch (dn->max_level) {
662 case 3:
663 base += 2 * indirect_blks;
df561f66 664 fallthrough;
3cf45747
CY		 665 case 2:
666 base += 2 * direct_blks;
df561f66 667 fallthrough;
3cf45747
CY		 668 case 1:
669 base += direct_index;
670 break;
671 default:
672 f2fs_bug_on(F2FS_I_SB(dn->inode), 1);
673 }
674
675 return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base;
676}
677
0a8165d7 678/*
e05df3b1
JK		 679 * The maximum depth is four.
680 * Offset[0] will have raw inode offset.
681 */
81ca7350 682static int get_node_path(struct inode *inode, long block,
de93653f 683 int offset[4], unsigned int noffset[4])
e05df3b1 684{
81ca7350 685 const long direct_index = ADDRS_PER_INODE(inode);
d02a6e61 686 const long direct_blks = ADDRS_PER_BLOCK(inode);
e05df3b1 687 const long dptrs_per_blk = NIDS_PER_BLOCK;
d02a6e61 688 const long indirect_blks = ADDRS_PER_BLOCK(inode) * NIDS_PER_BLOCK;
e05df3b1
JK		 689 const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK;
690 int n = 0;
691 int level = 0;
692
693 noffset[0] = 0;
694
695 if (block < direct_index) {
25c0a6e5 696 offset[n] = block;
e05df3b1
JK		 697 goto got;
698 }
699 block -= direct_index;
700 if (block < direct_blks) {
701 offset[n++] = NODE_DIR1_BLOCK;
702 noffset[n] = 1;
25c0a6e5 703 offset[n] = block;
e05df3b1
JK		 704 level = 1;
705 goto got;
706 }
707 block -= direct_blks;
708 if (block < direct_blks) {
709 offset[n++] = NODE_DIR2_BLOCK;
710 noffset[n] = 2;
25c0a6e5 711 offset[n] = block;
e05df3b1
JK		 712 level = 1;
713 goto got;
714 }
715 block -= direct_blks;
716 if (block < indirect_blks) {
717 offset[n++] = NODE_IND1_BLOCK;
718 noffset[n] = 3;
719 offset[n++] = block / direct_blks;
720 noffset[n] = 4 + offset[n - 1];
25c0a6e5 721 offset[n] = block % direct_blks;
e05df3b1
JK		 722 level = 2;
723 goto got;
724 }
725 block -= indirect_blks;
726 if (block < indirect_blks) {
727 offset[n++] = NODE_IND2_BLOCK;
728 noffset[n] = 4 + dptrs_per_blk;
729 offset[n++] = block / direct_blks;
730 noffset[n] = 5 + dptrs_per_blk + offset[n - 1];
25c0a6e5 731 offset[n] = block % direct_blks;
e05df3b1
JK		 732 level = 2;
733 goto got;
734 }
735 block -= indirect_blks;
736 if (block < dindirect_blks) {
737 offset[n++] = NODE_DIND_BLOCK;
738 noffset[n] = 5 + (dptrs_per_blk * 2);
739 offset[n++] = block / indirect_blks;
740 noffset[n] = 6 + (dptrs_per_blk * 2) +
741 offset[n - 1] * (dptrs_per_blk + 1);
742 offset[n++] = (block / direct_blks) % dptrs_per_blk;
743 noffset[n] = 7 + (dptrs_per_blk * 2) +
744 offset[n - 2] * (dptrs_per_blk + 1) +
745 offset[n - 1];
25c0a6e5 746 offset[n] = block % direct_blks;
e05df3b1
JK		 747 level = 3;
748 goto got;
749 } else {
adb6dc19 750 return -E2BIG;
e05df3b1
JK		 751 }
752got:
753 return level;
754}
755
756/*
757 * Caller should call f2fs_put_dnode(dn).
4f4124d0 758 * Also, it should grab and release a rwsem by calling f2fs_lock_op() and
7a88ddb5 759 * f2fs_unlock_op() only if mode is set with ALLOC_NODE.
e05df3b1 760 */
4d57b86d 761int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
e05df3b1 762{
4081363f 763 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
e05df3b1 764 struct page *npage[4];
f1a3b98e 765 struct page *parent = NULL;
e05df3b1
JK		 766 int offset[4];
767 unsigned int noffset[4];
768 nid_t nids[4];
3cf45747 769 int level, i = 0;
e05df3b1
JK		 770 int err = 0;
771
81ca7350 772 level = get_node_path(dn->inode, index, offset, noffset);
adb6dc19
JK		 773 if (level < 0)
774 return level;
e05df3b1
JK		 775
776 nids[0] = dn->inode->i_ino;
1646cfac 777 npage[0] = dn->inode_page;
e05df3b1 778
1646cfac 779 if (!npage[0]) {
4d57b86d 780 npage[0] = f2fs_get_node_page(sbi, nids[0]);
1646cfac
JK		 781 if (IS_ERR(npage[0]))
782 return PTR_ERR(npage[0]);
783 }
f1a3b98e
JK		 784
785 /* if inline_data is set, should not report any block indices */
786 if (f2fs_has_inline_data(dn->inode) && index) {
76629165 787 err = -ENOENT;
f1a3b98e
JK		 788 f2fs_put_page(npage[0], 1);
789 goto release_out;
790 }
791
e05df3b1 792 parent = npage[0];
52c2db3f
CL		 793 if (level != 0)
794 nids[1] = get_nid(parent, offset[0], true);
e05df3b1
JK		 795 dn->inode_page = npage[0];
796 dn->inode_page_locked = true;
797
798 /* get indirect or direct nodes */
799 for (i = 1; i <= level; i++) {
800 bool done = false;
801
266e97a8 802 if (!nids[i] && mode == ALLOC_NODE) {
e05df3b1 803 /* alloc new node */
4d57b86d 804 if (!f2fs_alloc_nid(sbi, &(nids[i]))) {
e05df3b1
JK		 805 err = -ENOSPC;
806 goto release_pages;
807 }
808
809 dn->nid = nids[i];
4d57b86d 810 npage[i] = f2fs_new_node_page(dn, noffset[i]);
e05df3b1 811 if (IS_ERR(npage[i])) {
4d57b86d 812 f2fs_alloc_nid_failed(sbi, nids[i]);
e05df3b1
JK		 813 err = PTR_ERR(npage[i]);
814 goto release_pages;
815 }
816
817 set_nid(parent, offset[i - 1], nids[i], i == 1);
4d57b86d 818 f2fs_alloc_nid_done(sbi, nids[i]);
e05df3b1 819 done = true;
266e97a8 820 } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) {
4d57b86d 821 npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]);
e05df3b1
JK		 822 if (IS_ERR(npage[i])) {
823 err = PTR_ERR(npage[i]);
824 goto release_pages;
825 }
826 done = true;
827 }
828 if (i == 1) {
829 dn->inode_page_locked = false;
830 unlock_page(parent);
831 } else {
832 f2fs_put_page(parent, 1);
833 }
834
835 if (!done) {
4d57b86d 836 npage[i] = f2fs_get_node_page(sbi, nids[i]);
e05df3b1
JK		 837 if (IS_ERR(npage[i])) {
838 err = PTR_ERR(npage[i]);
839 f2fs_put_page(npage[0], 0);
840 goto release_out;
841 }
842 }
843 if (i < level) {
844 parent = npage[i];
845 nids[i + 1] = get_nid(parent, offset[i], false);
846 }
847 }
848 dn->nid = nids[level];
849 dn->ofs_in_node = offset[level];
850 dn->node_page = npage[level];
a2ced1ce 851 dn->data_blkaddr = f2fs_data_blkaddr(dn);
94afd6d6
CY		 852
853 if (is_inode_flag_set(dn->inode, FI_COMPRESSED_FILE) &&
854 f2fs_sb_has_readonly(sbi)) {
4b99ecd3
CY		 855 unsigned int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
856 unsigned int ofs_in_node = dn->ofs_in_node;
857 pgoff_t fofs = index;
858 unsigned int c_len;
94afd6d6
CY		 859 block_t blkaddr;
860
4b99ecd3
CY		 861 /* should align fofs and ofs_in_node to cluster_size */
862 if (fofs % cluster_size) {
863 fofs = round_down(fofs, cluster_size);
864 ofs_in_node = round_down(ofs_in_node, cluster_size);
865 }
866
867 c_len = f2fs_cluster_blocks_are_contiguous(dn, ofs_in_node);
94afd6d6
CY		 868 if (!c_len)
869 goto out;
870
4b99ecd3 871 blkaddr = data_blkaddr(dn->inode, dn->node_page, ofs_in_node);
94afd6d6
CY		 872 if (blkaddr == COMPRESS_ADDR)
873 blkaddr = data_blkaddr(dn->inode, dn->node_page,
4b99ecd3 874 ofs_in_node + 1);
94afd6d6 875
e7547dac 876 f2fs_update_read_extent_tree_range_compressed(dn->inode,
4b99ecd3 877 fofs, blkaddr, cluster_size, c_len);
94afd6d6
CY		 878 }
879out:
e05df3b1
JK		 880 return 0;
881
882release_pages:
883 f2fs_put_page(parent, 1);
884 if (i > 1)
885 f2fs_put_page(npage[0], 0);
886release_out:
887 dn->inode_page = NULL;
888 dn->node_page = NULL;
3cf45747
CY		 889 if (err == -ENOENT) {
890 dn->cur_level = i;
891 dn->max_level = level;
0a2aa8fb 892 dn->ofs_in_node = offset[level];
3cf45747 893 }
e05df3b1
JK		 894 return err;
895}
896
7735730d 897static int truncate_node(struct dnode_of_data *dn)
e05df3b1 898{
4081363f 899 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
e05df3b1 900 struct node_info ni;
7735730d 901 int err;
0ea295dd 902 pgoff_t index;
e05df3b1 903
a9419b63 904 err = f2fs_get_node_info(sbi, dn->nid, &ni, false);
7735730d
CY		 905 if (err)
906 return err;
e05df3b1 907
e05df3b1 908 /* Deallocate node address */
4d57b86d 909 f2fs_invalidate_blocks(sbi, ni.blk_addr);
000519f2 910 dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino);
479f40c4 911 set_node_addr(sbi, &ni, NULL_ADDR, false);
e05df3b1
JK		 912
913 if (dn->nid == dn->inode->i_ino) {
4d57b86d 914 f2fs_remove_orphan_inode(sbi, dn->nid);
e05df3b1 915 dec_valid_inode_count(sbi);
0f18b462 916 f2fs_inode_synced(dn->inode);
e05df3b1 917 }
000519f2 918
e05df3b1 919 clear_node_page_dirty(dn->node_page);
caf0047e 920 set_sbi_flag(sbi, SBI_IS_DIRTY);
e05df3b1 921
0ea295dd 922 index = dn->node_page->index;
e05df3b1 923 f2fs_put_page(dn->node_page, 1);
bf39c00a
JK		 924
925 invalidate_mapping_pages(NODE_MAPPING(sbi),
0ea295dd 926 index, index);
bf39c00a 927
e05df3b1 928 dn->node_page = NULL;
51dd6249 929 trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
7735730d
CY		 930
931 return 0;
e05df3b1
JK		 932}
933
934static int truncate_dnode(struct dnode_of_data *dn)
935{
a6ec8378 936 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
e05df3b1 937 struct page *page;
7735730d 938 int err;
e05df3b1
JK		 939
940 if (dn->nid == 0)
941 return 1;
942
943 /* get direct node */
a6ec8378 944 page = f2fs_get_node_page(sbi, dn->nid);
45586c70 945 if (PTR_ERR(page) == -ENOENT)
e05df3b1
JK		 946 return 1;
947 else if (IS_ERR(page))
948 return PTR_ERR(page);
949
a6ec8378
CY		 950 if (IS_INODE(page) || ino_of_node(page) != dn->inode->i_ino) {
951 f2fs_err(sbi, "incorrect node reference, ino: %lu, nid: %u, ino_of_node: %u",
952 dn->inode->i_ino, dn->nid, ino_of_node(page));
953 set_sbi_flag(sbi, SBI_NEED_FSCK);
954 f2fs_handle_error(sbi, ERROR_INVALID_NODE_REFERENCE);
955 f2fs_put_page(page, 1);
956 return -EFSCORRUPTED;
957 }
958
e05df3b1
JK		 959 /* Make dnode_of_data for parameter */
960 dn->node_page = page;
961 dn->ofs_in_node = 0;
a6ec8378 962 f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
7735730d 963 err = truncate_node(dn);
0135c482
CY		 964 if (err) {
965 f2fs_put_page(page, 1);
7735730d 966 return err;
0135c482 967 }
7735730d 968
e05df3b1
JK		 969 return 1;
970}
971
972static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
973 int ofs, int depth)
974{
e05df3b1
JK		 975 struct dnode_of_data rdn = *dn;
976 struct page *page;
977 struct f2fs_node *rn;
978 nid_t child_nid;
979 unsigned int child_nofs;
980 int freed = 0;
981 int i, ret;
982
983 if (dn->nid == 0)
984 return NIDS_PER_BLOCK + 1;
985
51dd6249
NJ		 986 trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
987
4d57b86d 988 page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
51dd6249
NJ		 989 if (IS_ERR(page)) {
990 trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
e05df3b1 991 return PTR_ERR(page);
51dd6249 992 }
e05df3b1 993
4d57b86d 994 f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK);
79344efb 995
45590710 996 rn = F2FS_NODE(page);
e05df3b1
JK		 997 if (depth < 3) {
998 for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) {
999 child_nid = le32_to_cpu(rn->in.nid[i]);
1000 if (child_nid == 0)
1001 continue;
1002 rdn.nid = child_nid;
1003 ret = truncate_dnode(&rdn);
1004 if (ret < 0)
1005 goto out_err;
12719ae1
JK		 1006 if (set_nid(page, i, 0, false))
1007 dn->node_changed = true;
e05df3b1
JK		 1008 }
1009 } else {
1010 child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1;
1011 for (i = ofs; i < NIDS_PER_BLOCK; i++) {
1012 child_nid = le32_to_cpu(rn->in.nid[i]);
1013 if (child_nid == 0) {
1014 child_nofs += NIDS_PER_BLOCK + 1;
1015 continue;
1016 }
1017 rdn.nid = child_nid;
1018 ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1);
1019 if (ret == (NIDS_PER_BLOCK + 1)) {
12719ae1
JK		 1020 if (set_nid(page, i, 0, false))
1021 dn->node_changed = true;
e05df3b1
JK		 1022 child_nofs += ret;
1023 } else if (ret < 0 && ret != -ENOENT) {
1024 goto out_err;
1025 }
1026 }
1027 freed = child_nofs;
1028 }
1029
1030 if (!ofs) {
1031 /* remove current indirect node */
1032 dn->node_page = page;
7735730d
CY		 1033 ret = truncate_node(dn);
1034 if (ret)
1035 goto out_err;
e05df3b1
JK		 1036 freed++;
1037 } else {
1038 f2fs_put_page(page, 1);
1039 }
51dd6249 1040 trace_f2fs_truncate_nodes_exit(dn->inode, freed);
e05df3b1
JK		 1041 return freed;
1042
1043out_err:
1044 f2fs_put_page(page, 1);
51dd6249 1045 trace_f2fs_truncate_nodes_exit(dn->inode, ret);
e05df3b1
JK		 1046 return ret;
1047}
1048
1049static int truncate_partial_nodes(struct dnode_of_data *dn,
1050 struct f2fs_inode *ri, int *offset, int depth)
1051{
e05df3b1
JK		 1052 struct page *pages[2];
1053 nid_t nid[3];
1054 nid_t child_nid;
1055 int err = 0;
1056 int i;
1057 int idx = depth - 2;
1058
1059 nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
1060 if (!nid[0])
1061 return 0;
1062
1063 /* get indirect nodes in the path */
a225dca3 1064 for (i = 0; i < idx + 1; i++) {
e1c42045 1065 /* reference count'll be increased */
4d57b86d 1066 pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]);
e05df3b1 1067 if (IS_ERR(pages[i])) {
e05df3b1 1068 err = PTR_ERR(pages[i]);
a225dca3 1069 idx = i - 1;
e05df3b1
JK		 1070 goto fail;
1071 }
1072 nid[i + 1] = get_nid(pages[i], offset[i + 1], false);
1073 }
1074
4d57b86d 1075 f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK);
79344efb 1076
e05df3b1 1077 /* free direct nodes linked to a partial indirect node */
a225dca3 1078 for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) {
e05df3b1
JK		 1079 child_nid = get_nid(pages[idx], i, false);
1080 if (!child_nid)
1081 continue;
1082 dn->nid = child_nid;
1083 err = truncate_dnode(dn);
1084 if (err < 0)
1085 goto fail;
12719ae1
JK		 1086 if (set_nid(pages[idx], i, 0, false))
1087 dn->node_changed = true;
e05df3b1
JK		 1088 }
1089
a225dca3 1090 if (offset[idx + 1] == 0) {
e05df3b1
JK		 1091 dn->node_page = pages[idx];
1092 dn->nid = nid[idx];
7735730d
CY		 1093 err = truncate_node(dn);
1094 if (err)
1095 goto fail;
e05df3b1
JK		 1096 } else {
1097 f2fs_put_page(pages[idx], 1);
1098 }
1099 offset[idx]++;
a225dca3 1100 offset[idx + 1] = 0;
1101 idx--;
e05df3b1 1102fail:
a225dca3 1103 for (i = idx; i >= 0; i--)
e05df3b1 1104 f2fs_put_page(pages[i], 1);
51dd6249
NJ		 1105
1106 trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
1107
e05df3b1
JK		 1108 return err;
1109}
1110
0a8165d7 1111/*
e05df3b1
JK		 1112 * All the block addresses of data and nodes should be nullified.
1113 */
4d57b86d 1114int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
e05df3b1 1115{
4081363f 1116 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
e05df3b1
JK		 1117 int err = 0, cont = 1;
1118 int level, offset[4], noffset[4];
7dd690c8 1119 unsigned int nofs = 0;
58bfaf44 1120 struct f2fs_inode *ri;
e05df3b1
JK		 1121 struct dnode_of_data dn;
1122 struct page *page;
1123
51dd6249
NJ		 1124 trace_f2fs_truncate_inode_blocks_enter(inode, from);
1125
81ca7350 1126 level = get_node_path(inode, from, offset, noffset);
9039d835
YF		 1127 if (level < 0) {
1128 trace_f2fs_truncate_inode_blocks_exit(inode, level);
adb6dc19 1129 return level;
9039d835 1130 }
ff373558 1131
4d57b86d 1132 page = f2fs_get_node_page(sbi, inode->i_ino);
51dd6249
NJ		 1133 if (IS_ERR(page)) {
1134 trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
e05df3b1 1135 return PTR_ERR(page);
51dd6249 1136 }
e05df3b1
JK		 1137
1138 set_new_dnode(&dn, inode, page, NULL, 0);
1139 unlock_page(page);
1140
58bfaf44 1141 ri = F2FS_INODE(page);
e05df3b1
JK		 1142 switch (level) {
1143 case 0:
1144 case 1:
1145 nofs = noffset[1];
1146 break;
1147 case 2:
1148 nofs = noffset[1];
1149 if (!offset[level - 1])
1150 goto skip_partial;
58bfaf44 1151 err = truncate_partial_nodes(&dn, ri, offset, level);
e05df3b1
JK		 1152 if (err < 0 && err != -ENOENT)
1153 goto fail;
1154 nofs += 1 + NIDS_PER_BLOCK;
1155 break;
1156 case 3:
1157 nofs = 5 + 2 * NIDS_PER_BLOCK;
1158 if (!offset[level - 1])
1159 goto skip_partial;
58bfaf44 1160 err = truncate_partial_nodes(&dn, ri, offset, level);
e05df3b1
JK		 1161 if (err < 0 && err != -ENOENT)
1162 goto fail;
1163 break;
1164 default:
1165 BUG();
1166 }
1167
1168skip_partial:
1169 while (cont) {
58bfaf44 1170 dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
e05df3b1
JK		 1171 switch (offset[0]) {
1172 case NODE_DIR1_BLOCK:
1173 case NODE_DIR2_BLOCK:
1174 err = truncate_dnode(&dn);
1175 break;
1176
1177 case NODE_IND1_BLOCK:
1178 case NODE_IND2_BLOCK:
1179 err = truncate_nodes(&dn, nofs, offset[1], 2);
1180 break;
1181
1182 case NODE_DIND_BLOCK:
1183 err = truncate_nodes(&dn, nofs, offset[1], 3);
1184 cont = 0;
1185 break;
1186
1187 default:
1188 BUG();
1189 }
92c556ed
CY		 1190 if (err == -ENOENT) {
1191 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
1192 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
1193 f2fs_err_ratelimited(sbi,
1194 "truncate node fail, ino:%lu, nid:%u, "
1195 "offset[0]:%d, offset[1]:%d, nofs:%d",
1196 inode->i_ino, dn.nid, offset[0],
1197 offset[1], nofs);
1198 err = 0;
1199 }
1200 if (err < 0)
e05df3b1
JK		 1201 goto fail;
1202 if (offset[1] == 0 &&
58bfaf44 1203 ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) {
e05df3b1 1204 lock_page(page);
ff373558 1205 BUG_ON(page->mapping != NODE_MAPPING(sbi));
bae0ee7a 1206 f2fs_wait_on_page_writeback(page, NODE, true, true);
58bfaf44 1207 ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0;
e05df3b1
JK		 1208 set_page_dirty(page);
1209 unlock_page(page);
1210 }
1211 offset[1] = 0;
1212 offset[0]++;
1213 nofs += err;
1214 }
1215fail:
1216 f2fs_put_page(page, 0);
51dd6249 1217 trace_f2fs_truncate_inode_blocks_exit(inode, err);
e05df3b1
JK		 1218 return err > 0 ? 0 : err;
1219}
1220
9c77f754 1221/* caller must lock inode page */
4d57b86d 1222int f2fs_truncate_xattr_node(struct inode *inode)
4f16fb0f 1223{
4081363f 1224 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4f16fb0f
JK		 1225 nid_t nid = F2FS_I(inode)->i_xattr_nid;
1226 struct dnode_of_data dn;
1227 struct page *npage;
7735730d 1228 int err;
4f16fb0f
JK		 1229
1230 if (!nid)
1231 return 0;
1232
4d57b86d 1233 npage = f2fs_get_node_page(sbi, nid);
4f16fb0f
JK		 1234 if (IS_ERR(npage))
1235 return PTR_ERR(npage);
1236
7735730d
CY		 1237 set_new_dnode(&dn, inode, NULL, npage, nid);
1238 err = truncate_node(&dn);
1239 if (err) {
1240 f2fs_put_page(npage, 1);
1241 return err;
1242 }
1243
205b9822 1244 f2fs_i_xnid_write(inode, 0);
65985d93 1245
4f16fb0f
JK		 1246 return 0;
1247}
1248
39936837 1249/*
4f4124d0
CY		 1250 * Caller should grab and release a rwsem by calling f2fs_lock_op() and
1251 * f2fs_unlock_op().
39936837 1252 */
4d57b86d 1253int f2fs_remove_inode_page(struct inode *inode)
e05df3b1 1254{
e05df3b1 1255 struct dnode_of_data dn;
13ec7297 1256 int err;
e05df3b1 1257
c2e69583 1258 set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
4d57b86d 1259 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
13ec7297
CY		 1260 if (err)
1261 return err;
e05df3b1 1262
4d57b86d 1263 err = f2fs_truncate_xattr_node(inode);
13ec7297 1264 if (err) {
c2e69583 1265 f2fs_put_dnode(&dn);
13ec7297 1266 return err;
e05df3b1 1267 }
c2e69583
JK		 1268
1269 /* remove potential inline_data blocks */
1270 if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1271 S_ISLNK(inode->i_mode))
4d57b86d 1272 f2fs_truncate_data_blocks_range(&dn, 1);
c2e69583 1273
e1c42045 1274 /* 0 is possible, after f2fs_new_inode() has failed */
8d714f8a
JK		 1275 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
1276 f2fs_put_dnode(&dn);
1277 return -EIO;
1278 }
8b6810f8
CY		 1279
1280 if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) {
097a7686
CY		 1281 f2fs_warn(F2FS_I_SB(inode),
1282 "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu",
1283 inode->i_ino, (unsigned long long)inode->i_blocks);
8b6810f8
CY		 1284 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
1285 }
c2e69583
JK		 1286
1287 /* will put inode & node pages */
7735730d
CY		 1288 err = truncate_node(&dn);
1289 if (err) {
1290 f2fs_put_dnode(&dn);
1291 return err;
1292 }
13ec7297 1293 return 0;
e05df3b1
JK		 1294}
1295
4d57b86d 1296struct page *f2fs_new_inode_page(struct inode *inode)
e05df3b1 1297{
e05df3b1
JK		 1298 struct dnode_of_data dn;
1299
1300 /* allocate inode page for new inode */
1301 set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
44a83ff6
JK		 1302
1303 /* caller should f2fs_put_page(page, 1); */
4d57b86d 1304 return f2fs_new_node_page(&dn, 0);
e05df3b1
JK		 1305}
1306
4d57b86d 1307struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
e05df3b1 1308{
4081363f 1309 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
25cc5d3b 1310 struct node_info new_ni;
e05df3b1
JK		 1311 struct page *page;
1312 int err;
1313
91942321 1314 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
e05df3b1
JK		 1315 return ERR_PTR(-EPERM);
1316
300e129c 1317 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false);
e05df3b1
JK		 1318 if (!page)
1319 return ERR_PTR(-ENOMEM);
1320
0abd675e 1321 if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs))))
9c02740c 1322 goto fail;
0abd675e 1323
25cc5d3b 1324#ifdef CONFIG_F2FS_CHECK_FS
a9419b63 1325 err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false);
7735730d
CY		 1326 if (err) {
1327 dec_valid_node_count(sbi, dn->inode, !ofs);
1328 goto fail;
1329 }
141170b7
CY		 1330 if (unlikely(new_ni.blk_addr != NULL_ADDR)) {
1331 err = -EFSCORRUPTED;
0fa4e57c 1332 dec_valid_node_count(sbi, dn->inode, !ofs);
141170b7 1333 set_sbi_flag(sbi, SBI_NEED_FSCK);
95fa90c9 1334 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
141170b7
CY		 1335 goto fail;
1336 }
25cc5d3b
JK		 1337#endif
1338 new_ni.nid = dn->nid;
e05df3b1 1339 new_ni.ino = dn->inode->i_ino;
25cc5d3b
JK		 1340 new_ni.blk_addr = NULL_ADDR;
1341 new_ni.flag = 0;
1342 new_ni.version = 0;
479f40c4 1343 set_node_addr(sbi, &new_ni, NEW_ADDR, false);
9c02740c 1344
bae0ee7a 1345 f2fs_wait_on_page_writeback(page, NODE, true, true);
9c02740c 1346 fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true);
c5667575 1347 set_cold_node(page, S_ISDIR(dn->inode->i_mode));
237c0790
JK		 1348 if (!PageUptodate(page))
1349 SetPageUptodate(page);
12719ae1
JK		 1350 if (set_page_dirty(page))
1351 dn->node_changed = true;
e05df3b1 1352
4bc8e9bc 1353 if (f2fs_has_xattr_block(ofs))
205b9822 1354 f2fs_i_xnid_write(dn->inode, dn->nid);
479bd73a 1355
e05df3b1
JK		 1356 if (ofs == 0)
1357 inc_valid_inode_count(sbi);
e05df3b1 1358 return page;
e05df3b1 1359fail:
71e9fec5 1360 clear_node_page_dirty(page);
e05df3b1
JK		 1361 f2fs_put_page(page, 1);
1362 return ERR_PTR(err);
1363}
1364
56ae674c
JK		 1365/*
1366 * Caller should do after getting the following values.
1367 * 0: f2fs_put_page(page, 0)
86531d6b 1368 * LOCKED_PAGE or error: f2fs_put_page(page, 1)
56ae674c 1369 */
7649c873 1370static int read_node_page(struct page *page, blk_opf_t op_flags)
e05df3b1 1371{
4081363f 1372 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
e05df3b1 1373 struct node_info ni;
cf04e8eb 1374 struct f2fs_io_info fio = {
05ca3632 1375 .sbi = sbi,
cf04e8eb 1376 .type = NODE,
04d328de
MC		 1377 .op = REQ_OP_READ,
1378 .op_flags = op_flags,
05ca3632 1379 .page = page,
4375a336 1380 .encrypted_page = NULL,
cf04e8eb 1381 };
7735730d 1382 int err;
e05df3b1 1383
54c55c4e 1384 if (PageUptodate(page)) {
b42b179b
CY		 1385 if (!f2fs_inode_chksum_verify(sbi, page)) {
1386 ClearPageUptodate(page);
10f966bb 1387 return -EFSBADCRC;
b42b179b 1388 }
3bdad3c7 1389 return LOCKED_PAGE;
54c55c4e 1390 }
3bdad3c7 1391
a9419b63 1392 err = f2fs_get_node_info(sbi, page->index, &ni, false);
7735730d
CY		 1393 if (err)
1394 return err;
e05df3b1 1395
b7ec2061 1396 /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */
e6ecb142 1397 if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR)) {
2bca1e23 1398 ClearPageUptodate(page);
e05df3b1 1399 return -ENOENT;
393ff91f
JK		 1400 }
1401
7a9d7548 1402 fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr;
8b83ac81
CY		 1403
1404 err = f2fs_submit_page_bio(&fio);
1405
1406 if (!err)
34a23525 1407 f2fs_update_iostat(sbi, NULL, FS_NODE_READ_IO, F2FS_BLKSIZE);
8b83ac81
CY		 1408
1409 return err;
e05df3b1
JK		 1410}
1411
0a8165d7 1412/*
e05df3b1
JK		 1413 * Readahead a node page
1414 */
4d57b86d 1415void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 1416{
e05df3b1 1417 struct page *apage;
56ae674c 1418 int err;
e05df3b1 1419
e8458725
CY		 1420 if (!nid)
1421 return;
4d57b86d 1422 if (f2fs_check_nid_range(sbi, nid))
a4f843bd 1423 return;
e8458725 1424
5ec2d99d 1425 apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid);
999270de 1426 if (apage)
393ff91f 1427 return;
e05df3b1 1428
300e129c 1429 apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
e05df3b1
JK		 1430 if (!apage)
1431 return;
1432
70246286 1433 err = read_node_page(apage, REQ_RAHEAD);
86531d6b 1434 f2fs_put_page(apage, err ? 1 : 0);
e05df3b1
JK		 1435}
1436
17a0ee55 1437static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
0e022ea8 1438 struct page *parent, int start)
e05df3b1 1439{
e05df3b1 1440 struct page *page;
0e022ea8 1441 int err;
e05df3b1 1442
e05df3b1
JK		 1443 if (!nid)
1444 return ERR_PTR(-ENOENT);
4d57b86d 1445 if (f2fs_check_nid_range(sbi, nid))
a4f843bd 1446 return ERR_PTR(-EINVAL);
afcb7ca0 1447repeat:
300e129c 1448 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
e05df3b1
JK		 1449 if (!page)
1450 return ERR_PTR(-ENOMEM);
1451
70fd7614 1452 err = read_node_page(page, 0);
86531d6b 1453 if (err < 0) {
a7b8618a 1454 goto out_put_err;
86531d6b 1455 } else if (err == LOCKED_PAGE) {
1f258ec1 1456 err = 0;
56ae674c 1457 goto page_hit;
86531d6b 1458 }
e05df3b1 1459
0e022ea8 1460 if (parent)
4d57b86d 1461 f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE);
c718379b 1462
e05df3b1 1463 lock_page(page);
0e022ea8 1464
4ef51a8f 1465 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
afcb7ca0
JK		 1466 f2fs_put_page(page, 1);
1467 goto repeat;
1468 }
1563ac75 1469
1f258ec1
CY		 1470 if (unlikely(!PageUptodate(page))) {
1471 err = -EIO;
1563ac75 1472 goto out_err;
1f258ec1 1473 }
704956ec
CY		 1474
1475 if (!f2fs_inode_chksum_verify(sbi, page)) {
10f966bb 1476 err = -EFSBADCRC;
704956ec
CY		 1477 goto out_err;
1478 }
e0f56cb4 1479page_hit:
a7b8618a
JK		 1480 if (likely(nid == nid_of_node(page)))
1481 return page;
1482
1483 f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
dcbb4c10
JP		 1484 nid, nid_of_node(page), ino_of_node(page),
1485 ofs_of_node(page), cpver_of_node(page),
1486 next_blkaddr_of_node(page));
a7b8618a 1487 set_sbi_flag(sbi, SBI_NEED_FSCK);
9b4c8dd9
ZN		 1488 f2fs_handle_error(sbi, ERROR_INCONSISTENT_FOOTER);
1489 err = -EFSCORRUPTED;
0c9df7fb 1490out_err:
a7b8618a
JK		 1491 ClearPageUptodate(page);
1492out_put_err:
82c7863e
JK		 1493 /* ENOENT comes from read_node_page which is not an error. */
1494 if (err != -ENOENT)
1495 f2fs_handle_page_eio(sbi, page->index, NODE);
a7b8618a
JK		 1496 f2fs_put_page(page, 1);
1497 return ERR_PTR(err);
e05df3b1
JK		 1498}
1499
4d57b86d 1500struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
0e022ea8
CY		 1501{
1502 return __get_node_page(sbi, nid, NULL, 0);
1503}
1504
4d57b86d 1505struct page *f2fs_get_node_page_ra(struct page *parent, int start)
0e022ea8
CY		 1506{
1507 struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
1508 nid_t nid = get_nid(parent, start, false);
1509
1510 return __get_node_page(sbi, nid, parent, start);
1511}
1512
2049d4fc
JK		 1513static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
1514{
1515 struct inode *inode;
1516 struct page *page;
0f3311a8 1517 int ret;
2049d4fc
JK		 1518
1519 /* should flush inline_data before evict_inode */
1520 inode = ilookup(sbi->sb, ino);
1521 if (!inode)
1522 return;
1523
01eccef7
CY		 1524 page = f2fs_pagecache_get_page(inode->i_mapping, 0,
1525 FGP_LOCK|FGP_NOWAIT, 0);
2049d4fc
JK		 1526 if (!page)
1527 goto iput_out;
1528
1529 if (!PageUptodate(page))
1530 goto page_out;
1531
1532 if (!PageDirty(page))
1533 goto page_out;
1534
1535 if (!clear_page_dirty_for_io(page))
1536 goto page_out;
1537
0f3311a8
CY		 1538 ret = f2fs_write_inline_data(inode, page);
1539 inode_dec_dirty_pages(inode);
4d57b86d 1540 f2fs_remove_dirty_inode(inode);
0f3311a8 1541 if (ret)
2049d4fc
JK		 1542 set_page_dirty(page);
1543page_out:
4a6de50d 1544 f2fs_put_page(page, 1);
2049d4fc
JK		 1545iput_out:
1546 iput(inode);
1547}
1548
608514de
JK		 1549static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
1550{
028a63a6 1551 pgoff_t index;
4f4a4f0f 1552 struct folio_batch fbatch;
608514de 1553 struct page *last_page = NULL;
4f4a4f0f 1554 int nr_folios;
608514de 1555
4f4a4f0f 1556 folio_batch_init(&fbatch);
608514de 1557 index = 0;
028a63a6 1558
4f4a4f0f
VMO		 1559 while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index,
1560 (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1561 &fbatch))) {
028a63a6 1562 int i;
608514de 1563
4f4a4f0f
VMO		 1564 for (i = 0; i < nr_folios; i++) {
1565 struct page *page = &fbatch.folios[i]->page;
608514de
JK		 1566
1567 if (unlikely(f2fs_cp_error(sbi))) {
1568 f2fs_put_page(last_page, 0);
4f4a4f0f 1569 folio_batch_release(&fbatch);
608514de
JK		 1570 return ERR_PTR(-EIO);
1571 }
1572
1573 if (!IS_DNODE(page) || !is_cold_node(page))
1574 continue;
1575 if (ino_of_node(page) != ino)
1576 continue;
1577
1578 lock_page(page);
1579
1580 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1581continue_unlock:
1582 unlock_page(page);
1583 continue;
1584 }
1585 if (ino_of_node(page) != ino)
1586 goto continue_unlock;
1587
1588 if (!PageDirty(page)) {
1589 /* someone wrote it for us */
1590 goto continue_unlock;
1591 }
1592
1593 if (last_page)
1594 f2fs_put_page(last_page, 0);
1595
1596 get_page(page);
1597 last_page = page;
1598 unlock_page(page);
1599 }
4f4a4f0f 1600 folio_batch_release(&fbatch);
608514de
JK		 1601 cond_resched();
1602 }
1603 return last_page;
1604}
1605
d68f735b 1606static int __write_node_page(struct page *page, bool atomic, bool *submitted,
b0af6d49 1607 struct writeback_control *wbc, bool do_balance,
50fa53ec 1608 enum iostat_type io_type, unsigned int *seq_id)
faa24895
JK		 1609{
1610 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
1611 nid_t nid;
1612 struct node_info ni;
1613 struct f2fs_io_info fio = {
1614 .sbi = sbi,
39d787be 1615 .ino = ino_of_node(page),
faa24895
JK		 1616 .type = NODE,
1617 .op = REQ_OP_WRITE,
1618 .op_flags = wbc_to_write_flags(wbc),
1619 .page = page,
1620 .encrypted_page = NULL,
2eae077e 1621 .submitted = 0,
b0af6d49 1622 .io_type = io_type,
578c6478 1623 .io_wbc = wbc,
faa24895 1624 };
50fa53ec 1625 unsigned int seq;
faa24895 1626
92f750d8 1627 trace_f2fs_writepage(page_folio(page), NODE);
faa24895 1628
6d7c865c 1629 if (unlikely(f2fs_cp_error(sbi))) {
b62e71be
CY		 1630 /* keep node pages in remount-ro mode */
1631 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY)
1632 goto redirty_out;
28607bf3
JK		 1633 ClearPageUptodate(page);
1634 dec_page_count(sbi, F2FS_DIRTY_NODES);
1635 unlock_page(page);
1636 return 0;
6d7c865c 1637 }
db198ae0 1638
faa24895
JK		 1639 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1640 goto redirty_out;
faa24895 1641
100c0655
JK		 1642 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
1643 wbc->sync_mode == WB_SYNC_NONE &&
fd8c8caf
CY		 1644 IS_DNODE(page) && is_cold_node(page))
1645 goto redirty_out;
1646
faa24895
JK		 1647 /* get old block addr of this node page */
1648 nid = nid_of_node(page);
1649 f2fs_bug_on(sbi, page->index != nid);
1650
a9419b63 1651 if (f2fs_get_node_info(sbi, nid, &ni, !do_balance))
7735730d
CY		 1652 goto redirty_out;
1653
faa24895 1654 if (wbc->for_reclaim) {
e4544b63 1655 if (!f2fs_down_read_trylock(&sbi->node_write))
faa24895
JK		 1656 goto redirty_out;
1657 } else {
e4544b63 1658 f2fs_down_read(&sbi->node_write);
faa24895
JK		 1659 }
1660
faa24895
JK		 1661 /* This page is already truncated */
1662 if (unlikely(ni.blk_addr == NULL_ADDR)) {
1663 ClearPageUptodate(page);
1664 dec_page_count(sbi, F2FS_DIRTY_NODES);
e4544b63 1665 f2fs_up_read(&sbi->node_write);
faa24895
JK		 1666 unlock_page(page);
1667 return 0;
1668 }
1669
c9b60788 1670 if (__is_valid_data_blkaddr(ni.blk_addr) &&
93770ab7
CY		 1671 !f2fs_is_valid_blkaddr(sbi, ni.blk_addr,
1672 DATA_GENERIC_ENHANCE)) {
e4544b63 1673 f2fs_up_read(&sbi->node_write);
c9b60788 1674 goto redirty_out;
89d13c38 1675 }
c9b60788 1676
c550e25b 1677 if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi))
e7c75ab0
JK		 1678 fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
1679
dc5a9412 1680 /* should add to global list before clearing PAGECACHE status */
50fa53ec
CY		 1681 if (f2fs_in_warm_node_list(sbi, page)) {
1682 seq = f2fs_add_fsync_node_entry(sbi, page);
1683 if (seq_id)
1684 *seq_id = seq;
1685 }
1686
dc5a9412 1687 set_page_writeback(page);
dc5a9412 1688
faa24895 1689 fio.old_blkaddr = ni.blk_addr;
4d57b86d 1690 f2fs_do_write_node_page(nid, &fio);
faa24895
JK		 1691 set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page));
1692 dec_page_count(sbi, F2FS_DIRTY_NODES);
e4544b63 1693 f2fs_up_read(&sbi->node_write);
faa24895 1694
d68f735b 1695 if (wbc->for_reclaim) {
bab475c5 1696 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE);
d68f735b
JK		 1697 submitted = NULL;
1698 }
faa24895
JK		 1699
1700 unlock_page(page);
1701
d68f735b 1702 if (unlikely(f2fs_cp_error(sbi))) {
b9109b0e 1703 f2fs_submit_merged_write(sbi, NODE);
d68f735b
JK		 1704 submitted = NULL;
1705 }
1706 if (submitted)
1707 *submitted = fio.submitted;
faa24895 1708
401db79f
YS		 1709 if (do_balance)
1710 f2fs_balance_fs(sbi, false);
faa24895
JK		 1711 return 0;
1712
1713redirty_out:
1714 redirty_page_for_writepage(wbc, page);
1715 return AOP_WRITEPAGE_ACTIVATE;
1716}
1717
48018b4c 1718int f2fs_move_node_page(struct page *node_page, int gc_type)
f15194fc 1719{
48018b4c
CY		 1720 int err = 0;
1721
f15194fc
YH		 1722 if (gc_type == FG_GC) {
1723 struct writeback_control wbc = {
1724 .sync_mode = WB_SYNC_ALL,
1725 .nr_to_write = 1,
1726 .for_reclaim = 0,
1727 };
1728
bae0ee7a 1729 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
8d64d365
CY		 1730
1731 set_page_dirty(node_page);
1732
48018b4c
CY		 1733 if (!clear_page_dirty_for_io(node_page)) {
1734 err = -EAGAIN;
f15194fc 1735 goto out_page;
48018b4c 1736 }
f15194fc
YH		 1737
1738 if (__write_node_page(node_page, false, NULL,
48018b4c
CY		 1739 &wbc, false, FS_GC_NODE_IO, NULL)) {
1740 err = -EAGAIN;
f15194fc 1741 unlock_page(node_page);
48018b4c 1742 }
f15194fc
YH		 1743 goto release_page;
1744 } else {
1745 /* set page dirty and write it */
16778aea 1746 if (!folio_test_writeback(page_folio(node_page)))
f15194fc
YH		 1747 set_page_dirty(node_page);
1748 }
1749out_page:
1750 unlock_page(node_page);
1751release_page:
1752 f2fs_put_page(node_page, 0);
48018b4c 1753 return err;
f15194fc
YH		 1754}
1755
faa24895
JK		 1756static int f2fs_write_node_page(struct page *page,
1757 struct writeback_control *wbc)
1758{
50fa53ec
CY		 1759 return __write_node_page(page, false, NULL, wbc, false,
1760 FS_NODE_IO, NULL);
faa24895
JK		 1761}
1762
4d57b86d 1763int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
50fa53ec
CY		 1764 struct writeback_control *wbc, bool atomic,
1765 unsigned int *seq_id)
e05df3b1 1766{
028a63a6 1767 pgoff_t index;
e6e46e1e 1768 struct folio_batch fbatch;
c267ec15 1769 int ret = 0;
608514de
JK		 1770 struct page *last_page = NULL;
1771 bool marked = false;
26de9b11 1772 nid_t ino = inode->i_ino;
e6e46e1e 1773 int nr_folios;
bab475c5 1774 int nwritten = 0;
52681375 1775
608514de
JK		 1776 if (atomic) {
1777 last_page = last_fsync_dnode(sbi, ino);
1778 if (IS_ERR_OR_NULL(last_page))
1779 return PTR_ERR_OR_ZERO(last_page);
1780 }
1781retry:
e6e46e1e 1782 folio_batch_init(&fbatch);
52681375 1783 index = 0;
028a63a6 1784
e6e46e1e
VMO		 1785 while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index,
1786 (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1787 &fbatch))) {
028a63a6 1788 int i;
52681375 1789
e6e46e1e
VMO		 1790 for (i = 0; i < nr_folios; i++) {
1791 struct page *page = &fbatch.folios[i]->page;
d68f735b 1792 bool submitted = false;
52681375
JK		 1793
1794 if (unlikely(f2fs_cp_error(sbi))) {
608514de 1795 f2fs_put_page(last_page, 0);
e6e46e1e 1796 folio_batch_release(&fbatch);
9de69279
CY		 1797 ret = -EIO;
1798 goto out;
52681375
JK		 1799 }
1800
1801 if (!IS_DNODE(page) || !is_cold_node(page))
1802 continue;
1803 if (ino_of_node(page) != ino)
1804 continue;
1805
1806 lock_page(page);
1807
1808 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1809continue_unlock:
1810 unlock_page(page);
1811 continue;
1812 }
1813 if (ino_of_node(page) != ino)
1814 goto continue_unlock;
1815
608514de 1816 if (!PageDirty(page) && page != last_page) {
52681375
JK		 1817 /* someone wrote it for us */
1818 goto continue_unlock;
1819 }
1820
bae0ee7a 1821 f2fs_wait_on_page_writeback(page, NODE, true, true);
52681375 1822
d29fd172
JK		 1823 set_fsync_mark(page, 0);
1824 set_dentry_mark(page, 0);
1825
608514de
JK		 1826 if (!atomic || page == last_page) {
1827 set_fsync_mark(page, 1);
47c8ebcc 1828 percpu_counter_inc(&sbi->rf_node_block_count);
26de9b11
JK		 1829 if (IS_INODE(page)) {
1830 if (is_inode_flag_set(inode,
1831 FI_DIRTY_INODE))
4d57b86d 1832 f2fs_update_inode(inode, page);
608514de 1833 set_dentry_mark(page,
4d57b86d 1834 f2fs_need_dentry_mark(sbi, ino));
26de9b11 1835 }
a87aff1d 1836 /* may be written by other thread */
608514de
JK		 1837 if (!PageDirty(page))
1838 set_page_dirty(page);
1839 }
1840
1841 if (!clear_page_dirty_for_io(page))
1842 goto continue_unlock;
52681375 1843
e7c75ab0 1844 ret = __write_node_page(page, atomic &&
d68f735b 1845 page == last_page,
b0af6d49 1846 &submitted, wbc, true,
50fa53ec 1847 FS_NODE_IO, seq_id);
c267ec15 1848 if (ret) {
52681375 1849 unlock_page(page);
608514de
JK		 1850 f2fs_put_page(last_page, 0);
1851 break;
d68f735b 1852 } else if (submitted) {
bab475c5 1853 nwritten++;
608514de 1854 }
3f5f4959 1855
608514de
JK		 1856 if (page == last_page) {
1857 f2fs_put_page(page, 0);
1858 marked = true;
52681375 1859 break;
c267ec15 1860 }
52681375 1861 }
e6e46e1e 1862 folio_batch_release(&fbatch);
52681375
JK		 1863 cond_resched();
1864
608514de 1865 if (ret || marked)
52681375
JK		 1866 break;
1867 }
608514de 1868 if (!ret && atomic && !marked) {
dcbb4c10
JP		 1869 f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx",
1870 ino, last_page->index);
608514de 1871 lock_page(last_page);
bae0ee7a 1872 f2fs_wait_on_page_writeback(last_page, NODE, true, true);
608514de
JK		 1873 set_page_dirty(last_page);
1874 unlock_page(last_page);
1875 goto retry;
1876 }
9de69279 1877out:
bab475c5
CY		 1878 if (nwritten)
1879 f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE);
5f029c04 1880 return ret ? -EIO : 0;
52681375
JK		 1881}
1882
052a82d8
CY		 1883static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data)
1884{
1885 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1886 bool clean;
1887
1888 if (inode->i_ino != ino)
1889 return 0;
1890
1891 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
1892 return 0;
1893
1894 spin_lock(&sbi->inode_lock[DIRTY_META]);
1895 clean = list_empty(&F2FS_I(inode)->gdirty_list);
1896 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1897
1898 if (clean)
1899 return 0;
1900
1901 inode = igrab(inode);
1902 if (!inode)
1903 return 0;
1904 return 1;
1905}
1906
1907static bool flush_dirty_inode(struct page *page)
1908{
1909 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
1910 struct inode *inode;
1911 nid_t ino = ino_of_node(page);
1912
1913 inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL);
1914 if (!inode)
1915 return false;
1916
1917 f2fs_update_inode(inode, page);
1918 unlock_page(page);
1919
1920 iput(inode);
1921 return true;
1922}
1923
68e79baf 1924void f2fs_flush_inline_data(struct f2fs_sb_info *sbi)
34c061ad
SL		 1925{
1926 pgoff_t index = 0;
a40a4ad1
VMO		 1927 struct folio_batch fbatch;
1928 int nr_folios;
34c061ad 1929
a40a4ad1 1930 folio_batch_init(&fbatch);
34c061ad 1931
a40a4ad1
VMO		 1932 while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index,
1933 (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1934 &fbatch))) {
34c061ad
SL		 1935 int i;
1936
a40a4ad1
VMO		 1937 for (i = 0; i < nr_folios; i++) {
1938 struct page *page = &fbatch.folios[i]->page;
34c061ad 1939
8e9c1a34 1940 if (!IS_INODE(page))
34c061ad
SL		 1941 continue;
1942
1943 lock_page(page);
1944
1945 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1946continue_unlock:
1947 unlock_page(page);
1948 continue;
1949 }
1950
1951 if (!PageDirty(page)) {
1952 /* someone wrote it for us */
1953 goto continue_unlock;
1954 }
1955
1956 /* flush inline_data, if it's async context. */
b763f3be
CY		 1957 if (page_private_inline(page)) {
1958 clear_page_private_inline(page);
34c061ad
SL		 1959 unlock_page(page);
1960 flush_inline_data(sbi, ino_of_node(page));
1961 continue;
1962 }
1963 unlock_page(page);
1964 }
a40a4ad1 1965 folio_batch_release(&fbatch);
34c061ad
SL		 1966 cond_resched();
1967 }
34c061ad
SL		 1968}
1969
4d57b86d
CY		 1970int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
1971 struct writeback_control *wbc,
b0af6d49 1972 bool do_balance, enum iostat_type io_type)
52681375 1973{
028a63a6 1974 pgoff_t index;
7525486a 1975 struct folio_batch fbatch;
52681375 1976 int step = 0;
12bb0a8f 1977 int nwritten = 0;
3f5f4959 1978 int ret = 0;
7525486a 1979 int nr_folios, done = 0;
e05df3b1 1980
7525486a 1981 folio_batch_init(&fbatch);
e05df3b1
JK		 1982
1983next_step:
1984 index = 0;
028a63a6 1985
7525486a
VMO		 1986 while (!done && (nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi),
1987 &index, (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1988 &fbatch))) {
028a63a6 1989 int i;
e05df3b1 1990
7525486a
VMO		 1991 for (i = 0; i < nr_folios; i++) {
1992 struct page *page = &fbatch.folios[i]->page;
d68f735b 1993 bool submitted = false;
e05df3b1 1994
c29fd0c0
CY		 1995 /* give a priority to WB_SYNC threads */
1996 if (atomic_read(&sbi->wb_sync_req[NODE]) &&
1997 wbc->sync_mode == WB_SYNC_NONE) {
1998 done = 1;
1999 break;
2000 }
2001
e05df3b1
JK		 2002 /*
2003 * flushing sequence with step:
2004 * 0. indirect nodes
2005 * 1. dentry dnodes
2006 * 2. file dnodes
2007 */
2008 if (step == 0 && IS_DNODE(page))
2009 continue;
2010 if (step == 1 && (!IS_DNODE(page) ||
2011 is_cold_node(page)))
2012 continue;
2013 if (step == 2 && (!IS_DNODE(page) ||
2014 !is_cold_node(page)))
2015 continue;
9a4cbc9e 2016lock_node:
4b270a8c
CY		 2017 if (wbc->sync_mode == WB_SYNC_ALL)
2018 lock_page(page);
2019 else if (!trylock_page(page))
e05df3b1
JK		 2020 continue;
2021
4ef51a8f 2022 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
e05df3b1
JK		 2023continue_unlock:
2024 unlock_page(page);
2025 continue;
2026 }
e05df3b1
JK		 2027
2028 if (!PageDirty(page)) {
2029 /* someone wrote it for us */
2030 goto continue_unlock;
2031 }
2032
b0f3b87f
JK		 2033 /* flush inline_data/inode, if it's async context. */
2034 if (!do_balance)
2035 goto write_node;
2036
2037 /* flush inline_data */
b763f3be
CY		 2038 if (page_private_inline(page)) {
2039 clear_page_private_inline(page);
2049d4fc
JK		 2040 unlock_page(page);
2041 flush_inline_data(sbi, ino_of_node(page));
9a4cbc9e 2042 goto lock_node;
052a82d8
CY		 2043 }
2044
2045 /* flush dirty inode */
7859e97f
JK		 2046 if (IS_INODE(page) && flush_dirty_inode(page))
2047 goto lock_node;
b0f3b87f 2048write_node:
bae0ee7a 2049 f2fs_wait_on_page_writeback(page, NODE, true, true);
fa3d2bdf 2050
e05df3b1
JK		 2051 if (!clear_page_dirty_for_io(page))
2052 goto continue_unlock;
2053
52681375
JK		 2054 set_fsync_mark(page, 0);
2055 set_dentry_mark(page, 0);
52746519 2056
401db79f 2057 ret = __write_node_page(page, false, &submitted,
50fa53ec 2058 wbc, do_balance, io_type, NULL);
d68f735b 2059 if (ret)
52746519 2060 unlock_page(page);
d68f735b 2061 else if (submitted)
3f5f4959 2062 nwritten++;
e05df3b1
JK		 2063
2064 if (--wbc->nr_to_write == 0)
2065 break;
2066 }
7525486a 2067 folio_batch_release(&fbatch);
e05df3b1
JK		 2068 cond_resched();
2069
2070 if (wbc->nr_to_write == 0) {
2071 step = 2;
2072 break;
2073 }
2074 }
2075
2076 if (step < 2) {
100c0655
JK		 2077 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
2078 wbc->sync_mode == WB_SYNC_NONE && step == 1)
fd8c8caf 2079 goto out;
e05df3b1
JK		 2080 step++;
2081 goto next_step;
2082 }
fd8c8caf 2083out:
3f5f4959 2084 if (nwritten)
b9109b0e 2085 f2fs_submit_merged_write(sbi, NODE);
db198ae0
CY		 2086
2087 if (unlikely(f2fs_cp_error(sbi)))
2088 return -EIO;
3f5f4959 2089 return ret;
e05df3b1
JK		 2090}
2091
50fa53ec
CY		 2092int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
2093 unsigned int seq_id)
cfe58f9d 2094{
50fa53ec
CY		 2095 struct fsync_node_entry *fn;
2096 struct page *page;
2097 struct list_head *head = &sbi->fsync_node_list;
2098 unsigned long flags;
2099 unsigned int cur_seq_id = 0;
cfe58f9d 2100
50fa53ec
CY		 2101 while (seq_id && cur_seq_id < seq_id) {
2102 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
2103 if (list_empty(head)) {
2104 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
2105 break;
2106 }
2107 fn = list_first_entry(head, struct fsync_node_entry, list);
2108 if (fn->seq_id > seq_id) {
2109 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
2110 break;
2111 }
2112 cur_seq_id = fn->seq_id;
2113 page = fn->page;
2114 get_page(page);
2115 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
4ef51a8f 2116
bae0ee7a 2117 f2fs_wait_on_page_writeback(page, NODE, true, false);
cfe58f9d 2118
50fa53ec 2119 put_page(page);
cfe58f9d
JK		 2120 }
2121
08c3eab5 2122 return filemap_check_errors(NODE_MAPPING(sbi));
cfe58f9d
JK		 2123}
2124
e05df3b1
JK		 2125static int f2fs_write_node_pages(struct address_space *mapping,
2126 struct writeback_control *wbc)
2127{
4081363f 2128 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
9dfa1baf 2129 struct blk_plug plug;
50c8cdb3 2130 long diff;
e05df3b1 2131
0771fcc7
CY		 2132 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
2133 goto skip_write;
2134
4660f9c0 2135 /* balancing f2fs's metadata in background */
7bcd0cfa 2136 f2fs_balance_fs_bg(sbi, true);
e05df3b1 2137
a7fdffbd 2138 /* collect a number of dirty node pages and write together */
812a9597
JK		 2139 if (wbc->sync_mode != WB_SYNC_ALL &&
2140 get_pages(sbi, F2FS_DIRTY_NODES) <
2141 nr_pages_to_skip(sbi, NODE))
d3baf95d 2142 goto skip_write;
a7fdffbd 2143
c29fd0c0
CY		 2144 if (wbc->sync_mode == WB_SYNC_ALL)
2145 atomic_inc(&sbi->wb_sync_req[NODE]);
34415099
CY		 2146 else if (atomic_read(&sbi->wb_sync_req[NODE])) {
2147 /* to avoid potential deadlock */
2148 if (current->plug)
2149 blk_finish_plug(current->plug);
c29fd0c0 2150 goto skip_write;
34415099 2151 }
c29fd0c0 2152
d31c7c3f
YH		 2153 trace_f2fs_writepages(mapping->host, wbc, NODE);
2154
50c8cdb3 2155 diff = nr_pages_to_write(sbi, NODE, wbc);
9dfa1baf 2156 blk_start_plug(&plug);
4d57b86d 2157 f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO);
9dfa1baf 2158 blk_finish_plug(&plug);
50c8cdb3 2159 wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff);
c29fd0c0
CY		 2160
2161 if (wbc->sync_mode == WB_SYNC_ALL)
2162 atomic_dec(&sbi->wb_sync_req[NODE]);
e05df3b1 2163 return 0;
d3baf95d
JK		 2164
2165skip_write:
2166 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES);
d31c7c3f 2167 trace_f2fs_writepages(mapping->host, wbc, NODE);
d3baf95d 2168 return 0;
e05df3b1
JK		 2169}
2170
cbc975b1
MWO		 2171static bool f2fs_dirty_node_folio(struct address_space *mapping,
2172 struct folio *folio)
e05df3b1 2173{
92f750d8 2174 trace_f2fs_set_page_dirty(folio, NODE);
26c6b887 2175
cbc975b1
MWO		 2176 if (!folio_test_uptodate(folio))
2177 folio_mark_uptodate(folio);
54c55c4e 2178#ifdef CONFIG_F2FS_CHECK_FS
cbc975b1 2179 if (IS_INODE(&folio->page))
29c87793 2180 f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page);
54c55c4e 2181#endif
9b7eadd9 2182 if (filemap_dirty_folio(mapping, folio)) {
29c87793 2183 inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES);
cbc975b1
MWO		 2184 set_page_private_reference(&folio->page);
2185 return true;
e05df3b1 2186 }
cbc975b1 2187 return false;
e05df3b1
JK		 2188}
2189
0a8165d7 2190/*
e05df3b1
JK		 2191 * Structure of the f2fs node operations
2192 */
2193const struct address_space_operations f2fs_node_aops = {
2194 .writepage = f2fs_write_node_page,
2195 .writepages = f2fs_write_node_pages,
cbc975b1 2196 .dirty_folio = f2fs_dirty_node_folio,
91503996 2197 .invalidate_folio = f2fs_invalidate_folio,
c26cd045 2198 .release_folio = f2fs_release_folio,
1d5b9bd6 2199 .migrate_folio = filemap_migrate_folio,
e05df3b1
JK		 2200};
2201
8a7ed66a
JK		 2202static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
2203 nid_t n)
e05df3b1 2204{
8a7ed66a 2205 return radix_tree_lookup(&nm_i->free_nid_root, n);
e05df3b1
JK		 2206}
2207
9a4ffdf5 2208static int __insert_free_nid(struct f2fs_sb_info *sbi,
b815bdc7 2209 struct free_nid *i)
e05df3b1 2210{
b8559dc2 2211 struct f2fs_nm_info *nm_i = NM_I(sbi);
a0761f63 2212 int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i);
5f029c04 2213
a0761f63
FL		 2214 if (err)
2215 return err;
eb0aa4b8 2216
b815bdc7
LS		 2217 nm_i->nid_cnt[FREE_NID]++;
2218 list_add_tail(&i->list, &nm_i->free_nid_list);
eb0aa4b8 2219 return 0;
b8559dc2
CY		 2220}
2221
9a4ffdf5 2222static void __remove_free_nid(struct f2fs_sb_info *sbi,
a0761f63 2223 struct free_nid *i, enum nid_state state)
b8559dc2
CY		 2224{
2225 struct f2fs_nm_info *nm_i = NM_I(sbi);
2226
9a4ffdf5
CY		 2227 f2fs_bug_on(sbi, state != i->state);
2228 nm_i->nid_cnt[state]--;
2229 if (state == FREE_NID)
2230 list_del(&i->list);
a0761f63
FL		 2231 radix_tree_delete(&nm_i->free_nid_root, i->nid);
2232}
2233
2234static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i,
2235 enum nid_state org_state, enum nid_state dst_state)
b8559dc2
CY		 2236{
2237 struct f2fs_nm_info *nm_i = NM_I(sbi);
2238
a0761f63
FL		 2239 f2fs_bug_on(sbi, org_state != i->state);
2240 i->state = dst_state;
2241 nm_i->nid_cnt[org_state]--;
2242 nm_i->nid_cnt[dst_state]++;
2243
2244 switch (dst_state) {
2245 case PREALLOC_NID:
2246 list_del(&i->list);
2247 break;
2248 case FREE_NID:
2249 list_add_tail(&i->list, &nm_i->free_nid_list);
2250 break;
2251 default:
2252 BUG_ON(1);
2253 }
e05df3b1
JK		 2254}
2255
94c821fb
CY		 2256bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi)
2257{
2258 struct f2fs_nm_info *nm_i = NM_I(sbi);
2259 unsigned int i;
2260 bool ret = true;
2261
e4544b63 2262 f2fs_down_read(&nm_i->nat_tree_lock);
94c821fb
CY		 2263 for (i = 0; i < nm_i->nat_blocks; i++) {
2264 if (!test_bit_le(i, nm_i->nat_block_bitmap)) {
2265 ret = false;
2266 break;
2267 }
2268 }
e4544b63 2269 f2fs_up_read(&nm_i->nat_tree_lock);
94c821fb
CY		 2270
2271 return ret;
2272}
2273
5921aaa1
L		 2274static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
2275 bool set, bool build)
2276{
2277 struct f2fs_nm_info *nm_i = NM_I(sbi);
2278 unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid);
2279 unsigned int nid_ofs = nid - START_NID(nid);
2280
2281 if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap))
2282 return;
2283
2284 if (set) {
2285 if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
2286 return;
2287 __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
2288 nm_i->free_nid_count[nat_ofs]++;
2289 } else {
2290 if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
2291 return;
2292 __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
2293 if (!build)
2294 nm_i->free_nid_count[nat_ofs]--;
2295 }
2296}
2297
4ac91242 2298/* return if the nid is recognized as free */
5921aaa1
L		 2299static bool add_free_nid(struct f2fs_sb_info *sbi,
2300 nid_t nid, bool build, bool update)
e05df3b1 2301{
6fb03f3a 2302 struct f2fs_nm_info *nm_i = NM_I(sbi);
30a61ddf 2303 struct free_nid *i, *e;
59bbd474 2304 struct nat_entry *ne;
30a61ddf
CY		 2305 int err = -EINVAL;
2306 bool ret = false;
9198aceb
JK		 2307
2308 /* 0 nid should not be used */
cfb271d4 2309 if (unlikely(nid == 0))
4ac91242 2310 return false;
59bbd474 2311
626bcf2b
CY		 2312 if (unlikely(f2fs_check_nid_range(sbi, nid)))
2313 return false;
2314
32410577 2315 i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL);
e05df3b1 2316 i->nid = nid;
9a4ffdf5 2317 i->state = FREE_NID;
e05df3b1 2318
5921aaa1 2319 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
769ec6e5 2320
b8559dc2 2321 spin_lock(&nm_i->nid_list_lock);
30a61ddf
CY		 2322
2323 if (build) {
2324 /*
2325 * Thread A Thread B
2326 * - f2fs_create
2327 * - f2fs_new_inode
4d57b86d 2328 * - f2fs_alloc_nid
9a4ffdf5 2329 * - __insert_nid_to_list(PREALLOC_NID)
30a61ddf 2330 * - f2fs_balance_fs_bg
4d57b86d
CY		 2331 * - f2fs_build_free_nids
2332 * - __f2fs_build_free_nids
30a61ddf
CY		 2333 * - scan_nat_page
2334 * - add_free_nid
2335 * - __lookup_nat_cache
2336 * - f2fs_add_link
4d57b86d
CY		 2337 * - f2fs_init_inode_metadata
2338 * - f2fs_new_inode_page
2339 * - f2fs_new_node_page
30a61ddf 2340 * - set_node_addr
4d57b86d 2341 * - f2fs_alloc_nid_done
9a4ffdf5
CY		 2342 * - __remove_nid_from_list(PREALLOC_NID)
2343 * - __insert_nid_to_list(FREE_NID)
30a61ddf
CY		 2344 */
2345 ne = __lookup_nat_cache(nm_i, nid);
2346 if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) ||
2347 nat_get_blkaddr(ne) != NULL_ADDR))
2348 goto err_out;
2349
2350 e = __lookup_free_nid_list(nm_i, nid);
2351 if (e) {
9a4ffdf5 2352 if (e->state == FREE_NID)
30a61ddf
CY		 2353 ret = true;
2354 goto err_out;
2355 }
2356 }
2357 ret = true;
b815bdc7 2358 err = __insert_free_nid(sbi, i);
30a61ddf 2359err_out:
5921aaa1
L		 2360 if (update) {
2361 update_free_nid_bitmap(sbi, nid, ret, build);
2362 if (!build)
2363 nm_i->available_nids++;
2364 }
eb0aa4b8
JK		 2365 spin_unlock(&nm_i->nid_list_lock);
2366 radix_tree_preload_end();
5921aaa1 2367
30a61ddf 2368 if (err)
e05df3b1 2369 kmem_cache_free(free_nid_slab, i);
30a61ddf 2370 return ret;
e05df3b1
JK		 2371}
2372
b8559dc2 2373static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 2374{
b8559dc2 2375 struct f2fs_nm_info *nm_i = NM_I(sbi);
e05df3b1 2376 struct free_nid *i;
cf0ee0f0
CY		 2377 bool need_free = false;
2378
b8559dc2 2379 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2380 i = __lookup_free_nid_list(nm_i, nid);
9a4ffdf5 2381 if (i && i->state == FREE_NID) {
a0761f63 2382 __remove_free_nid(sbi, i, FREE_NID);
cf0ee0f0 2383 need_free = true;
e05df3b1 2384 }
b8559dc2 2385 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2386
2387 if (need_free)
2388 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2389}
2390
e2374015 2391static int scan_nat_page(struct f2fs_sb_info *sbi,
e05df3b1
JK		 2392 struct page *nat_page, nid_t start_nid)
2393{
6fb03f3a 2394 struct f2fs_nm_info *nm_i = NM_I(sbi);
e05df3b1
JK		 2395 struct f2fs_nat_block *nat_blk = page_address(nat_page);
2396 block_t blk_addr;
4ac91242 2397 unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid);
e05df3b1
JK		 2398 int i;
2399
23380b85 2400 __set_bit_le(nat_ofs, nm_i->nat_block_bitmap);
4ac91242 2401
e05df3b1
JK		 2402 i = start_nid % NAT_ENTRY_PER_BLOCK;
2403
2404 for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {
cfb271d4 2405 if (unlikely(start_nid >= nm_i->max_nid))
04431c44 2406 break;
23d38844
HL		 2407
2408 blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr);
e2374015
CY		 2409
2410 if (blk_addr == NEW_ADDR)
a5e80e18 2411 return -EFSCORRUPTED;
e2374015 2412
5921aaa1
L		 2413 if (blk_addr == NULL_ADDR) {
2414 add_free_nid(sbi, start_nid, true, true);
2415 } else {
2416 spin_lock(&NM_I(sbi)->nid_list_lock);
2417 update_free_nid_bitmap(sbi, start_nid, false, true);
2418 spin_unlock(&NM_I(sbi)->nid_list_lock);
2419 }
4ac91242 2420 }
e2374015
CY		 2421
2422 return 0;
4ac91242
CY		 2423}
2424
2fbaa25f 2425static void scan_curseg_cache(struct f2fs_sb_info *sbi)
4ac91242 2426{
4ac91242
CY		 2427 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
2428 struct f2fs_journal *journal = curseg->journal;
2fbaa25f
CY		 2429 int i;
2430
2431 down_read(&curseg->journal_rwsem);
2432 for (i = 0; i < nats_in_cursum(journal); i++) {
2433 block_t addr;
2434 nid_t nid;
2435
2436 addr = le32_to_cpu(nat_in_journal(journal, i).block_addr);
2437 nid = le32_to_cpu(nid_in_journal(journal, i));
2438 if (addr == NULL_ADDR)
5921aaa1 2439 add_free_nid(sbi, nid, true, false);
2fbaa25f
CY		 2440 else
2441 remove_free_nid(sbi, nid);
2442 }
2443 up_read(&curseg->journal_rwsem);
2444}
2445
2446static void scan_free_nid_bits(struct f2fs_sb_info *sbi)
2447{
2448 struct f2fs_nm_info *nm_i = NM_I(sbi);
4ac91242 2449 unsigned int i, idx;
97456574 2450 nid_t nid;
4ac91242 2451
e4544b63 2452 f2fs_down_read(&nm_i->nat_tree_lock);
4ac91242
CY		 2453
2454 for (i = 0; i < nm_i->nat_blocks; i++) {
2455 if (!test_bit_le(i, nm_i->nat_block_bitmap))
2456 continue;
586d1492
CY		 2457 if (!nm_i->free_nid_count[i])
2458 continue;
4ac91242 2459 for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) {
97456574
FL		 2460 idx = find_next_bit_le(nm_i->free_nid_bitmap[i],
2461 NAT_ENTRY_PER_BLOCK, idx);
2462 if (idx >= NAT_ENTRY_PER_BLOCK)
2463 break;
4ac91242
CY		 2464
2465 nid = i * NAT_ENTRY_PER_BLOCK + idx;
5921aaa1 2466 add_free_nid(sbi, nid, true, false);
4ac91242 2467
9a4ffdf5 2468 if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS)
4ac91242
CY		 2469 goto out;
2470 }
2471 }
2472out:
2fbaa25f 2473 scan_curseg_cache(sbi);
4ac91242 2474
e4544b63 2475 f2fs_up_read(&nm_i->nat_tree_lock);
e05df3b1
JK		 2476}
2477
e2374015 2478static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi,
4d57b86d 2479 bool sync, bool mount)
e05df3b1 2480{
e05df3b1 2481 struct f2fs_nm_info *nm_i = NM_I(sbi);
e2374015 2482 int i = 0, ret;
55008d84 2483 nid_t nid = nm_i->next_scan_nid;
e05df3b1 2484
e9cdd307
YH		 2485 if (unlikely(nid >= nm_i->max_nid))
2486 nid = 0;
2487
e2cab031
ST		 2488 if (unlikely(nid % NAT_ENTRY_PER_BLOCK))
2489 nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK;
2490
55008d84 2491 /* Enough entries */
9a4ffdf5 2492 if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
e2374015 2493 return 0;
e05df3b1 2494
4d57b86d 2495 if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS))
e2374015 2496 return 0;
e05df3b1 2497
4ac91242
CY		 2498 if (!mount) {
2499 /* try to find free nids in free_nid_bitmap */
2500 scan_free_nid_bits(sbi);
2501
74986213 2502 if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
e2374015 2503 return 0;
22ad0b6a
JK		 2504 }
2505
55008d84 2506 /* readahead nat pages to be scanned */
4d57b86d 2507 f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES,
26879fb1 2508 META_NAT, true);
e05df3b1 2509
e4544b63 2510 f2fs_down_read(&nm_i->nat_tree_lock);
a5131193 2511
e05df3b1 2512 while (1) {
66e83361
YH		 2513 if (!test_bit_le(NAT_BLOCK_OFFSET(nid),
2514 nm_i->nat_block_bitmap)) {
2515 struct page *page = get_current_nat_page(sbi, nid);
e05df3b1 2516
edc55aaf
JK		 2517 if (IS_ERR(page)) {
2518 ret = PTR_ERR(page);
2519 } else {
2520 ret = scan_nat_page(sbi, page, nid);
2521 f2fs_put_page(page, 1);
2522 }
e2374015
CY		 2523
2524 if (ret) {
e4544b63 2525 f2fs_up_read(&nm_i->nat_tree_lock);
a5e80e18
ZN		 2526
2527 if (ret == -EFSCORRUPTED) {
2528 f2fs_err(sbi, "NAT is corrupt, run fsck to fix it");
2529 set_sbi_flag(sbi, SBI_NEED_FSCK);
2530 f2fs_handle_error(sbi,
2531 ERROR_INCONSISTENT_NAT);
2532 }
2533
edc55aaf 2534 return ret;
e2374015 2535 }
66e83361 2536 }
e05df3b1
JK		 2537
2538 nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK));
cfb271d4 2539 if (unlikely(nid >= nm_i->max_nid))
e05df3b1 2540 nid = 0;
55008d84 2541
a6d494b6 2542 if (++i >= FREE_NID_PAGES)
e05df3b1
JK		 2543 break;
2544 }
2545
55008d84
JK		 2546 /* go to the next free nat pages to find free nids abundantly */
2547 nm_i->next_scan_nid = nid;
e05df3b1
JK		 2548
2549 /* find free nids from current sum_pages */
2fbaa25f 2550 scan_curseg_cache(sbi);
dfc08a12 2551
e4544b63 2552 f2fs_up_read(&nm_i->nat_tree_lock);
2db2388f 2553
4d57b86d 2554 f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid),
ea1a29a0 2555 nm_i->ra_nid_pages, META_NAT, false);
e2374015
CY		 2556
2557 return 0;
e05df3b1
JK		 2558}
2559
e2374015 2560int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount)
2411cf5b 2561{
e2374015
CY		 2562 int ret;
2563
2411cf5b 2564 mutex_lock(&NM_I(sbi)->build_lock);
e2374015 2565 ret = __f2fs_build_free_nids(sbi, sync, mount);
2411cf5b 2566 mutex_unlock(&NM_I(sbi)->build_lock);
e2374015
CY		 2567
2568 return ret;
2411cf5b
CY		 2569}
2570
e05df3b1
JK		 2571/*
2572 * If this function returns success, caller can obtain a new nid
2573 * from second parameter of this function.
2574 * The returned nid could be used ino as well as nid when inode is created.
2575 */
4d57b86d 2576bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
e05df3b1
JK		 2577{
2578 struct f2fs_nm_info *nm_i = NM_I(sbi);
2579 struct free_nid *i = NULL;
e05df3b1 2580retry:
c40e15a9 2581 if (time_to_inject(sbi, FAULT_ALLOC_NID))
cb78942b 2582 return false;
7fa750a1 2583
b8559dc2 2584 spin_lock(&nm_i->nid_list_lock);
e05df3b1 2585
04d47e67
CY		 2586 if (unlikely(nm_i->available_nids == 0)) {
2587 spin_unlock(&nm_i->nid_list_lock);
2588 return false;
2589 }
e05df3b1 2590
4d57b86d
CY		 2591 /* We should not use stale free nids created by f2fs_build_free_nids */
2592 if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) {
9a4ffdf5
CY		 2593 f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
2594 i = list_first_entry(&nm_i->free_nid_list,
b8559dc2 2595 struct free_nid, list);
55008d84 2596 *nid = i->nid;
b8559dc2 2597
a0761f63 2598 __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID);
04d47e67 2599 nm_i->available_nids--;
4ac91242 2600
346fe752 2601 update_free_nid_bitmap(sbi, *nid, false, false);
4ac91242 2602
b8559dc2 2603 spin_unlock(&nm_i->nid_list_lock);
55008d84
JK		 2604 return true;
2605 }
b8559dc2 2606 spin_unlock(&nm_i->nid_list_lock);
55008d84
JK		 2607
2608 /* Let's scan nat pages and its caches to get free nids */
f84262b0
JK		 2609 if (!f2fs_build_free_nids(sbi, true, false))
2610 goto retry;
2611 return false;
e05df3b1
JK		 2612}
2613
0a8165d7 2614/*
4d57b86d 2615 * f2fs_alloc_nid() should be called prior to this function.
e05df3b1 2616 */
4d57b86d 2617void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1
JK		 2618{
2619 struct f2fs_nm_info *nm_i = NM_I(sbi);
2620 struct free_nid *i;
2621
b8559dc2 2622 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2623 i = __lookup_free_nid_list(nm_i, nid);
b8559dc2 2624 f2fs_bug_on(sbi, !i);
a0761f63 2625 __remove_free_nid(sbi, i, PREALLOC_NID);
b8559dc2 2626 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2627
2628 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2629}
2630
0a8165d7 2631/*
4d57b86d 2632 * f2fs_alloc_nid() should be called prior to this function.
e05df3b1 2633 */
4d57b86d 2634void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 2635{
49952fa1
JK		 2636 struct f2fs_nm_info *nm_i = NM_I(sbi);
2637 struct free_nid *i;
cf0ee0f0 2638 bool need_free = false;
49952fa1 2639
65985d93
JK		 2640 if (!nid)
2641 return;
2642
b8559dc2 2643 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2644 i = __lookup_free_nid_list(nm_i, nid);
b8559dc2
CY		 2645 f2fs_bug_on(sbi, !i);
2646
4d57b86d 2647 if (!f2fs_available_free_memory(sbi, FREE_NIDS)) {
a0761f63 2648 __remove_free_nid(sbi, i, PREALLOC_NID);
cf0ee0f0 2649 need_free = true;
95630cba 2650 } else {
a0761f63 2651 __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID);
95630cba 2652 }
04d47e67
CY		 2653
2654 nm_i->available_nids++;
2655
346fe752 2656 update_free_nid_bitmap(sbi, nid, true, false);
4ac91242 2657
b8559dc2 2658 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2659
2660 if (need_free)
2661 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2662}
2663
4d57b86d 2664int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
31696580
CY		 2665{
2666 struct f2fs_nm_info *nm_i = NM_I(sbi);
31696580
CY		 2667 int nr = nr_shrink;
2668
9a4ffdf5 2669 if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
ad4edb83
JK		 2670 return 0;
2671
31696580
CY		 2672 if (!mutex_trylock(&nm_i->build_lock))
2673 return 0;
2674
042be373
CY		 2675 while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) {
2676 struct free_nid *i, *next;
2677 unsigned int batch = SHRINK_NID_BATCH_SIZE;
b8559dc2 2678
042be373
CY		 2679 spin_lock(&nm_i->nid_list_lock);
2680 list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) {
2681 if (!nr_shrink || !batch ||
2682 nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
2683 break;
2684 __remove_free_nid(sbi, i, FREE_NID);
2685 kmem_cache_free(free_nid_slab, i);
2686 nr_shrink--;
2687 batch--;
2688 }
2689 spin_unlock(&nm_i->nid_list_lock);
31696580 2690 }
042be373 2691
31696580
CY		 2692 mutex_unlock(&nm_i->build_lock);
2693
2694 return nr - nr_shrink;
2695}
2696
9627a7b3 2697int f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
28cdce04 2698{
28cdce04
CY		 2699 void *src_addr, *dst_addr;
2700 size_t inline_size;
2701 struct page *ipage;
2702 struct f2fs_inode *ri;
2703
4d57b86d 2704 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
9627a7b3
CY		 2705 if (IS_ERR(ipage))
2706 return PTR_ERR(ipage);
28cdce04 2707
e3b4d43f 2708 ri = F2FS_INODE(page);
1eca05aa 2709 if (ri->i_inline & F2FS_INLINE_XATTR) {
96dd0251
CY		 2710 if (!f2fs_has_inline_xattr(inode)) {
2711 set_inode_flag(inode, FI_INLINE_XATTR);
2712 stat_inc_inline_xattr(inode);
2713 }
1eca05aa 2714 } else {
96dd0251
CY		 2715 if (f2fs_has_inline_xattr(inode)) {
2716 stat_dec_inline_xattr(inode);
2717 clear_inode_flag(inode, FI_INLINE_XATTR);
2718 }
e3b4d43f
JK		 2719 goto update_inode;
2720 }
2721
6afc662e
CY		 2722 dst_addr = inline_xattr_addr(inode, ipage);
2723 src_addr = inline_xattr_addr(inode, page);
28cdce04
CY		 2724 inline_size = inline_xattr_size(inode);
2725
bae0ee7a 2726 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
28cdce04 2727 memcpy(dst_addr, src_addr, inline_size);
e3b4d43f 2728update_inode:
4d57b86d 2729 f2fs_update_inode(inode, ipage);
28cdce04 2730 f2fs_put_page(ipage, 1);
9627a7b3 2731 return 0;
28cdce04
CY		 2732}
2733
4d57b86d 2734int f2fs_recover_xattr_data(struct inode *inode, struct page *page)
abb2366c 2735{
4081363f 2736 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
abb2366c 2737 nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid;
87905682
YH		 2738 nid_t new_xnid;
2739 struct dnode_of_data dn;
abb2366c 2740 struct node_info ni;
d260081c 2741 struct page *xpage;
7735730d 2742 int err;
abb2366c 2743
abb2366c
JK		 2744 if (!prev_xnid)
2745 goto recover_xnid;
2746
d260081c 2747 /* 1: invalidate the previous xattr nid */
a9419b63 2748 err = f2fs_get_node_info(sbi, prev_xnid, &ni, false);
7735730d
CY		 2749 if (err)
2750 return err;
2751
4d57b86d 2752 f2fs_invalidate_blocks(sbi, ni.blk_addr);
000519f2 2753 dec_valid_node_count(sbi, inode, false);
479f40c4 2754 set_node_addr(sbi, &ni, NULL_ADDR, false);
abb2366c
JK		 2755
2756recover_xnid:
d260081c 2757 /* 2: update xattr nid in inode */
4d57b86d 2758 if (!f2fs_alloc_nid(sbi, &new_xnid))
87905682
YH		 2759 return -ENOSPC;
2760
2761 set_new_dnode(&dn, inode, NULL, NULL, new_xnid);
4d57b86d 2762 xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET);
87905682 2763 if (IS_ERR(xpage)) {
4d57b86d 2764 f2fs_alloc_nid_failed(sbi, new_xnid);
87905682
YH		 2765 return PTR_ERR(xpage);
2766 }
2767
4d57b86d
CY		 2768 f2fs_alloc_nid_done(sbi, new_xnid);
2769 f2fs_update_inode_page(inode);
d260081c
CY		 2770
2771 /* 3: update and set xattr node page dirty */
86d7d57a 2772 if (page) {
50a472bb
JK		 2773 memcpy(F2FS_NODE(xpage), F2FS_NODE(page),
2774 VALID_XATTR_BLOCK_SIZE);
86d7d57a
ZN		 2775 set_page_dirty(xpage);
2776 }
d260081c 2777 f2fs_put_page(xpage, 1);
abb2366c 2778
d260081c 2779 return 0;
abb2366c
JK		 2780}
2781
4d57b86d 2782int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
e05df3b1 2783{
58bfaf44 2784 struct f2fs_inode *src, *dst;
e05df3b1
JK		 2785 nid_t ino = ino_of_node(page);
2786 struct node_info old_ni, new_ni;
2787 struct page *ipage;
7735730d 2788 int err;
e05df3b1 2789
a9419b63 2790 err = f2fs_get_node_info(sbi, ino, &old_ni, false);
7735730d
CY		 2791 if (err)
2792 return err;
e8271fa3
JK		 2793
2794 if (unlikely(old_ni.blk_addr != NULL_ADDR))
2795 return -EINVAL;
e8ea9b3d 2796retry:
300e129c 2797 ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false);
e8ea9b3d 2798 if (!ipage) {
4034247a 2799 memalloc_retry_wait(GFP_NOFS);
e8ea9b3d
JK		 2800 goto retry;
2801 }
e05df3b1 2802
e1c42045 2803 /* Should not use this inode from free nid list */
b8559dc2 2804 remove_free_nid(sbi, ino);
e05df3b1 2805
237c0790
JK		 2806 if (!PageUptodate(ipage))
2807 SetPageUptodate(ipage);
e05df3b1 2808 fill_node_footer(ipage, ino, ino, 0, true);
ef2a0071 2809 set_cold_node(ipage, false);
e05df3b1 2810
58bfaf44
JK		 2811 src = F2FS_INODE(page);
2812 dst = F2FS_INODE(ipage);
e05df3b1 2813
36218b81 2814 memcpy(dst, src, offsetof(struct f2fs_inode, i_ext));
58bfaf44
JK		 2815 dst->i_size = 0;
2816 dst->i_blocks = cpu_to_le64(1);
2817 dst->i_links = cpu_to_le32(1);
2818 dst->i_xattr_nid = 0;
7a2af766 2819 dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR);
5c57132e 2820 if (dst->i_inline & F2FS_EXTRA_ATTR) {
7a2af766 2821 dst->i_extra_isize = src->i_extra_isize;
6afc662e 2822
7beb01f7 2823 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
6afc662e
CY		 2824 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2825 i_inline_xattr_size))
2826 dst->i_inline_xattr_size = src->i_inline_xattr_size;
2827
7beb01f7 2828 if (f2fs_sb_has_project_quota(sbi) &&
5c57132e
CY		 2829 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2830 i_projid))
2831 dst->i_projid = src->i_projid;
5cd1f387 2832
7beb01f7 2833 if (f2fs_sb_has_inode_crtime(sbi) &&
5cd1f387
CY		 2834 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2835 i_crtime_nsec)) {
2836 dst->i_crtime = src->i_crtime;
2837 dst->i_crtime_nsec = src->i_crtime_nsec;
2838 }
5c57132e 2839 }
e05df3b1
JK		 2840
2841 new_ni = old_ni;
2842 new_ni.ino = ino;
2843
0abd675e 2844 if (unlikely(inc_valid_node_count(sbi, NULL, true)))
65e5cd0a 2845 WARN_ON(1);
479f40c4 2846 set_node_addr(sbi, &new_ni, NEW_ADDR, false);
e05df3b1 2847 inc_valid_inode_count(sbi);
617deb8c 2848 set_page_dirty(ipage);
e05df3b1
JK		 2849 f2fs_put_page(ipage, 1);
2850 return 0;
2851}
2852
7735730d 2853int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
e05df3b1
JK		 2854 unsigned int segno, struct f2fs_summary_block *sum)
2855{
2856 struct f2fs_node *rn;
2857 struct f2fs_summary *sum_entry;
e05df3b1 2858 block_t addr;
9ecf4b80 2859 int i, idx, last_offset, nrpages;
e05df3b1
JK		 2860
2861 /* scan the node segment */
a60108f7 2862 last_offset = BLKS_PER_SEG(sbi);
e05df3b1
JK		 2863 addr = START_BLOCK(sbi, segno);
2864 sum_entry = &sum->entries[0];
2865
9ecf4b80 2866 for (i = 0; i < last_offset; i += nrpages, addr += nrpages) {
5f7136db 2867 nrpages = bio_max_segs(last_offset - i);
393ff91f 2868
e1c42045 2869 /* readahead node pages */
4d57b86d 2870 f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true);
e05df3b1 2871
9ecf4b80 2872 for (idx = addr; idx < addr + nrpages; idx++) {
4d57b86d 2873 struct page *page = f2fs_get_tmp_page(sbi, idx);
9af0ff1c 2874
7735730d
CY		 2875 if (IS_ERR(page))
2876 return PTR_ERR(page);
2877
9ecf4b80
CY		 2878 rn = F2FS_NODE(page);
2879 sum_entry->nid = rn->footer.nid;
2880 sum_entry->version = 0;
2881 sum_entry->ofs_in_node = 0;
2882 sum_entry++;
2883 f2fs_put_page(page, 1);
9af0ff1c 2884 }
bac4eef6 2885
9ecf4b80 2886 invalidate_mapping_pages(META_MAPPING(sbi), addr,
bac4eef6 2887 addr + nrpages);
e05df3b1 2888 }
7735730d 2889 return 0;
e05df3b1
JK		 2890}
2891
aec71382 2892static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
e05df3b1
JK		 2893{
2894 struct f2fs_nm_info *nm_i = NM_I(sbi);
2895 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 2896 struct f2fs_journal *journal = curseg->journal;
e05df3b1
JK		 2897 int i;
2898
b7ad7512 2899 down_write(&curseg->journal_rwsem);
dfc08a12 2900 for (i = 0; i < nats_in_cursum(journal); i++) {
e05df3b1
JK		 2901 struct nat_entry *ne;
2902 struct f2fs_nat_entry raw_ne;
dfc08a12 2903 nid_t nid = le32_to_cpu(nid_in_journal(journal, i));
e05df3b1 2904
b862676e
CY		 2905 if (f2fs_check_nid_range(sbi, nid))
2906 continue;
2907
dfc08a12 2908 raw_ne = nat_in_journal(journal, i);
9be32d72 2909
e05df3b1 2910 ne = __lookup_nat_cache(nm_i, nid);
e05df3b1 2911 if (!ne) {
32410577 2912 ne = __alloc_nat_entry(sbi, nid, true);
12f9ef37 2913 __init_nat_entry(nm_i, ne, &raw_ne, true);
e05df3b1 2914 }
04d47e67
CY		 2915
2916 /*
2917 * if a free nat in journal has not been used after last
2918 * checkpoint, we should remove it from available nids,
2919 * since later we will add it again.
2920 */
2921 if (!get_nat_flag(ne, IS_DIRTY) &&
2922 le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) {
2923 spin_lock(&nm_i->nid_list_lock);
2924 nm_i->available_nids--;
2925 spin_unlock(&nm_i->nid_list_lock);
2926 }
2927
e05df3b1 2928 __set_nat_cache_dirty(nm_i, ne);
e05df3b1 2929 }
dfc08a12 2930 update_nats_in_cursum(journal, -i);
b7ad7512 2931 up_write(&curseg->journal_rwsem);
e05df3b1
JK		 2932}
2933
309cc2b6
JK		 2934static void __adjust_nat_entry_set(struct nat_entry_set *nes,
2935 struct list_head *head, int max)
e05df3b1 2936{
309cc2b6 2937 struct nat_entry_set *cur;
e05df3b1 2938
309cc2b6
JK		 2939 if (nes->entry_cnt >= max)
2940 goto add_out;
e05df3b1 2941
309cc2b6
JK		 2942 list_for_each_entry(cur, head, set_list) {
2943 if (cur->entry_cnt >= nes->entry_cnt) {
2944 list_add(&nes->set_list, cur->set_list.prev);
2945 return;
2946 }
aec71382 2947 }
309cc2b6
JK		 2948add_out:
2949 list_add_tail(&nes->set_list, head);
2950}
e05df3b1 2951
94c821fb
CY		 2952static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs,
2953 unsigned int valid)
2954{
2955 if (valid == 0) {
2956 __set_bit_le(nat_ofs, nm_i->empty_nat_bits);
2957 __clear_bit_le(nat_ofs, nm_i->full_nat_bits);
2958 return;
2959 }
2960
2961 __clear_bit_le(nat_ofs, nm_i->empty_nat_bits);
2962 if (valid == NAT_ENTRY_PER_BLOCK)
2963 __set_bit_le(nat_ofs, nm_i->full_nat_bits);
2964 else
2965 __clear_bit_le(nat_ofs, nm_i->full_nat_bits);
2966}
2967
2968static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
22ad0b6a
JK		 2969 struct page *page)
2970{
2971 struct f2fs_nm_info *nm_i = NM_I(sbi);
2972 unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK;
2973 struct f2fs_nat_block *nat_blk = page_address(page);
2974 int valid = 0;
37a0ab2a 2975 int i = 0;
22ad0b6a 2976
94c821fb 2977 if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
22ad0b6a
JK		 2978 return;
2979
37a0ab2a
FL		 2980 if (nat_index == 0) {
2981 valid = 1;
2982 i = 1;
2983 }
2984 for (; i < NAT_ENTRY_PER_BLOCK; i++) {
36af5f40 2985 if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR)
22ad0b6a
JK		 2986 valid++;
2987 }
94c821fb
CY		 2988
2989 __update_nat_bits(nm_i, nat_index, valid);
2990}
2991
2992void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi)
2993{
2994 struct f2fs_nm_info *nm_i = NM_I(sbi);
2995 unsigned int nat_ofs;
2996
e4544b63 2997 f2fs_down_read(&nm_i->nat_tree_lock);
94c821fb
CY		 2998
2999 for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) {
3000 unsigned int valid = 0, nid_ofs = 0;
3001
3002 /* handle nid zero due to it should never be used */
3003 if (unlikely(nat_ofs == 0)) {
3004 valid = 1;
3005 nid_ofs = 1;
3006 }
3007
3008 for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) {
3009 if (!test_bit_le(nid_ofs,
3010 nm_i->free_nid_bitmap[nat_ofs]))
3011 valid++;
3012 }
3013
3014 __update_nat_bits(nm_i, nat_ofs, valid);
22ad0b6a
JK		 3015 }
3016
e4544b63 3017 f2fs_up_read(&nm_i->nat_tree_lock);
22ad0b6a
JK		 3018}
3019
edc55aaf 3020static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
22ad0b6a 3021 struct nat_entry_set *set, struct cp_control *cpc)
309cc2b6
JK		 3022{
3023 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 3024 struct f2fs_journal *journal = curseg->journal;
309cc2b6
JK		 3025 nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK;
3026 bool to_journal = true;
3027 struct f2fs_nat_block *nat_blk;
3028 struct nat_entry *ne, *cur;
3029 struct page *page = NULL;
e05df3b1 3030
aec71382
CY		 3031 /*
3032 * there are two steps to flush nat entries:
3033 * #1, flush nat entries to journal in current hot data summary block.
3034 * #2, flush nat entries to nat page.
3035 */
94c821fb 3036 if ((cpc->reason & CP_UMOUNT) ||
22ad0b6a 3037 !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
309cc2b6
JK		 3038 to_journal = false;
3039
3040 if (to_journal) {
b7ad7512 3041 down_write(&curseg->journal_rwsem);
309cc2b6
JK		 3042 } else {
3043 page = get_next_nat_page(sbi, start_nid);
edc55aaf
JK		 3044 if (IS_ERR(page))
3045 return PTR_ERR(page);
3046
309cc2b6
JK		 3047 nat_blk = page_address(page);
3048 f2fs_bug_on(sbi, !nat_blk);
3049 }
aec71382 3050
309cc2b6
JK		 3051 /* flush dirty nats in nat entry set */
3052 list_for_each_entry_safe(ne, cur, &set->entry_list, list) {
3053 struct f2fs_nat_entry *raw_ne;
3054 nid_t nid = nat_get_nid(ne);
3055 int offset;
3056
febeca6d 3057 f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR);
aec71382
CY		 3058
3059 if (to_journal) {
4d57b86d 3060 offset = f2fs_lookup_journal_in_cursum(journal,
309cc2b6
JK		 3061 NAT_JOURNAL, nid, 1);
3062 f2fs_bug_on(sbi, offset < 0);
dfc08a12
CY		 3063 raw_ne = &nat_in_journal(journal, offset);
3064 nid_in_journal(journal, offset) = cpu_to_le32(nid);
aec71382 3065 } else {
309cc2b6 3066 raw_ne = &nat_blk->entries[nid - start_nid];
e05df3b1 3067 }
309cc2b6 3068 raw_nat_from_node_info(raw_ne, &ne->ni);
309cc2b6 3069 nat_reset_flag(ne);
0b28b71e 3070 __clear_nat_cache_dirty(NM_I(sbi), set, ne);
04d47e67 3071 if (nat_get_blkaddr(ne) == NULL_ADDR) {
5921aaa1 3072 add_free_nid(sbi, nid, false, true);
4ac91242
CY		 3073 } else {
3074 spin_lock(&NM_I(sbi)->nid_list_lock);
346fe752 3075 update_free_nid_bitmap(sbi, nid, false, false);
04d47e67
CY		 3076 spin_unlock(&NM_I(sbi)->nid_list_lock);
3077 }
309cc2b6 3078 }
e05df3b1 3079
22ad0b6a 3080 if (to_journal) {
b7ad7512 3081 up_write(&curseg->journal_rwsem);
22ad0b6a 3082 } else {
94c821fb 3083 update_nat_bits(sbi, start_nid, page);
309cc2b6 3084 f2fs_put_page(page, 1);
22ad0b6a 3085 }
aec71382 3086
59c9081b
YH		 3087 /* Allow dirty nats by node block allocation in write_begin */
3088 if (!set->entry_cnt) {
3089 radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set);
3090 kmem_cache_free(nat_entry_set_slab, set);
3091 }
edc55aaf 3092 return 0;
309cc2b6 3093}
aec71382 3094
309cc2b6
JK		 3095/*
3096 * This function is called during the checkpointing process.
3097 */
edc55aaf 3098int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
309cc2b6
JK		 3099{
3100 struct f2fs_nm_info *nm_i = NM_I(sbi);
3101 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 3102 struct f2fs_journal *journal = curseg->journal;
c31e4961 3103 struct nat_entry_set *setvec[NAT_VEC_SIZE];
309cc2b6
JK		 3104 struct nat_entry_set *set, *tmp;
3105 unsigned int found;
3106 nid_t set_idx = 0;
3107 LIST_HEAD(sets);
edc55aaf 3108 int err = 0;
309cc2b6 3109
a95ba66a
JK		 3110 /*
3111 * during unmount, let's flush nat_bits before checking
3112 * nat_cnt[DIRTY_NAT].
3113 */
94c821fb 3114 if (cpc->reason & CP_UMOUNT) {
e4544b63 3115 f2fs_down_write(&nm_i->nat_tree_lock);
7f2ecdd8 3116 remove_nats_in_journal(sbi);
e4544b63 3117 f2fs_up_write(&nm_i->nat_tree_lock);
7f2ecdd8
JK		 3118 }
3119
a95ba66a 3120 if (!nm_i->nat_cnt[DIRTY_NAT])
edc55aaf 3121 return 0;
a5131193 3122
e4544b63 3123 f2fs_down_write(&nm_i->nat_tree_lock);
a5131193 3124
309cc2b6
JK		 3125 /*
3126 * if there are no enough space in journal to store dirty nat
3127 * entries, remove all entries from journal and merge them
3128 * into nat entry set.
3129 */
94c821fb 3130 if (cpc->reason & CP_UMOUNT ||
a95ba66a
JK		 3131 !__has_cursum_space(journal,
3132 nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL))
309cc2b6
JK		 3133 remove_nats_in_journal(sbi);
3134
309cc2b6 3135 while ((found = __gang_lookup_nat_set(nm_i,
c31e4961 3136 set_idx, NAT_VEC_SIZE, setvec))) {
309cc2b6 3137 unsigned idx;
5f029c04 3138
309cc2b6
JK		 3139 set_idx = setvec[found - 1]->set + 1;
3140 for (idx = 0; idx < found; idx++)
3141 __adjust_nat_entry_set(setvec[idx], &sets,
dfc08a12 3142 MAX_NAT_JENTRIES(journal));
e05df3b1 3143 }
aec71382 3144
309cc2b6 3145 /* flush dirty nats in nat entry set */
edc55aaf
JK		 3146 list_for_each_entry_safe(set, tmp, &sets, set_list) {
3147 err = __flush_nat_entry_set(sbi, set, cpc);
3148 if (err)
3149 break;
3150 }
309cc2b6 3151
e4544b63 3152 f2fs_up_write(&nm_i->nat_tree_lock);
59c9081b 3153 /* Allow dirty nats by node block allocation in write_begin */
edc55aaf
JK		 3154
3155 return err;
e05df3b1
JK		 3156}
3157
22ad0b6a
JK		 3158static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
3159{
3160 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3161 struct f2fs_nm_info *nm_i = NM_I(sbi);
3162 unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE;
3163 unsigned int i;
3164 __u64 cp_ver = cur_cp_version(ckpt);
22ad0b6a
JK		 3165 block_t nat_bits_addr;
3166
df033caf 3167 nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
0b6d4ca0 3168 nm_i->nat_bits = f2fs_kvzalloc(sbi,
acbf054d 3169 nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL);
22ad0b6a
JK		 3170 if (!nm_i->nat_bits)
3171 return -ENOMEM;
3172
94c821fb
CY		 3173 nm_i->full_nat_bits = nm_i->nat_bits + 8;
3174 nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
3175
3176 if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
3177 return 0;
3178
a60108f7 3179 nat_bits_addr = __start_cp_addr(sbi) + BLKS_PER_SEG(sbi) -
22ad0b6a
JK		 3180 nm_i->nat_bits_blocks;
3181 for (i = 0; i < nm_i->nat_bits_blocks; i++) {
7735730d
CY		 3182 struct page *page;
3183
3184 page = f2fs_get_meta_page(sbi, nat_bits_addr++);
3b30eb19 3185 if (IS_ERR(page))
7735730d 3186 return PTR_ERR(page);
22ad0b6a
JK		 3187
3188 memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS),
3189 page_address(page), F2FS_BLKSIZE);
3190 f2fs_put_page(page, 1);
3191 }
3192
ced2c7ea 3193 cp_ver |= (cur_cp_crc(ckpt) << 32);
22ad0b6a 3194 if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) {
94c821fb
CY		 3195 clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
3196 f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)",
3197 cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits));
22ad0b6a
JK		 3198 return 0;
3199 }
3200
dcbb4c10 3201 f2fs_notice(sbi, "Found nat_bits in checkpoint");
22ad0b6a
JK		 3202 return 0;
3203}
3204
bd80a4b9 3205static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi)
7041d5d2
CY		 3206{
3207 struct f2fs_nm_info *nm_i = NM_I(sbi);
3208 unsigned int i = 0;
3209 nid_t nid, last_nid;
3210
94c821fb 3211 if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
7041d5d2
CY		 3212 return;
3213
3214 for (i = 0; i < nm_i->nat_blocks; i++) {
3215 i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i);
3216 if (i >= nm_i->nat_blocks)
3217 break;
3218
3219 __set_bit_le(i, nm_i->nat_block_bitmap);
3220
3221 nid = i * NAT_ENTRY_PER_BLOCK;
f6986ede 3222 last_nid = nid + NAT_ENTRY_PER_BLOCK;
7041d5d2 3223
346fe752 3224 spin_lock(&NM_I(sbi)->nid_list_lock);
7041d5d2 3225 for (; nid < last_nid; nid++)
346fe752
CY		 3226 update_free_nid_bitmap(sbi, nid, true, true);
3227 spin_unlock(&NM_I(sbi)->nid_list_lock);
7041d5d2
CY		 3228 }
3229
3230 for (i = 0; i < nm_i->nat_blocks; i++) {
3231 i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i);
3232 if (i >= nm_i->nat_blocks)
3233 break;
3234
3235 __set_bit_le(i, nm_i->nat_block_bitmap);
3236 }
3237}
3238
e05df3b1
JK		 3239static int init_node_manager(struct f2fs_sb_info *sbi)
3240{
3241 struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi);
3242 struct f2fs_nm_info *nm_i = NM_I(sbi);
3243 unsigned char *version_bitmap;
22ad0b6a
JK		 3244 unsigned int nat_segs;
3245 int err;
e05df3b1
JK		 3246
3247 nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr);
3248
3249 /* segment_count_nat includes pair segment so divide to 2. */
3250 nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1;
22ad0b6a
JK		 3251 nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
3252 nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks;
7ee0eeab 3253
b63da15e 3254 /* not used nids: 0, node, meta, (and root counted as valid node) */
04d47e67 3255 nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count -
27cae0bc 3256 F2FS_RESERVED_NODE_NUM;
9a4ffdf5
CY		 3257 nm_i->nid_cnt[FREE_NID] = 0;
3258 nm_i->nid_cnt[PREALLOC_NID] = 0;
cdfc41c1 3259 nm_i->ram_thresh = DEF_RAM_THRESHOLD;
ea1a29a0 3260 nm_i->ra_nid_pages = DEF_RA_NID_PAGES;
2304cb0c 3261 nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD;
47c8ebcc 3262 nm_i->max_rf_node_blocks = DEF_RF_NODE_BLOCKS;
e05df3b1 3263
8a7ed66a 3264 INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC);
9a4ffdf5 3265 INIT_LIST_HEAD(&nm_i->free_nid_list);
769ec6e5
JK		 3266 INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO);
3267 INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO);
e05df3b1 3268 INIT_LIST_HEAD(&nm_i->nat_entries);
22969158 3269 spin_lock_init(&nm_i->nat_list_lock);
e05df3b1
JK		 3270
3271 mutex_init(&nm_i->build_lock);
b8559dc2 3272 spin_lock_init(&nm_i->nid_list_lock);
e4544b63 3273 init_f2fs_rwsem(&nm_i->nat_tree_lock);
e05df3b1 3274
e05df3b1 3275 nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid);
79b5793b 3276 nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP);
e05df3b1 3277 version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP);
79b5793b
AG		 3278 nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size,
3279 GFP_KERNEL);
3280 if (!nm_i->nat_bitmap)
3281 return -ENOMEM;
599a09b2 3282
22ad0b6a
JK		 3283 err = __get_nat_bitmaps(sbi);
3284 if (err)
3285 return err;
3286
599a09b2
CY		 3287#ifdef CONFIG_F2FS_CHECK_FS
3288 nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size,
3289 GFP_KERNEL);
3290 if (!nm_i->nat_bitmap_mir)
3291 return -ENOMEM;
3292#endif
3293
e05df3b1
JK		 3294 return 0;
3295}
3296
9f7e4a2c 3297static int init_free_nid_cache(struct f2fs_sb_info *sbi)
4ac91242
CY		 3298{
3299 struct f2fs_nm_info *nm_i = NM_I(sbi);
bb1105e4 3300 int i;
4ac91242 3301
026f0507 3302 nm_i->free_nid_bitmap =
0b6d4ca0
EB		 3303 f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *),
3304 nm_i->nat_blocks),
3305 GFP_KERNEL);
4ac91242
CY		 3306 if (!nm_i->free_nid_bitmap)
3307 return -ENOMEM;
3308
bb1105e4
JK		 3309 for (i = 0; i < nm_i->nat_blocks; i++) {
3310 nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi,
e15d54d5 3311 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL);
68c43a23 3312 if (!nm_i->free_nid_bitmap[i])
bb1105e4
JK		 3313 return -ENOMEM;
3314 }
3315
628b3d14 3316 nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8,
4ac91242
CY		 3317 GFP_KERNEL);
3318 if (!nm_i->nat_block_bitmap)
3319 return -ENOMEM;
586d1492 3320
9d2a789c
KC		 3321 nm_i->free_nid_count =
3322 f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short),
3323 nm_i->nat_blocks),
3324 GFP_KERNEL);
586d1492
CY		 3325 if (!nm_i->free_nid_count)
3326 return -ENOMEM;
4ac91242
CY		 3327 return 0;
3328}
3329
4d57b86d 3330int f2fs_build_node_manager(struct f2fs_sb_info *sbi)
e05df3b1
JK		 3331{
3332 int err;
3333
acbf054d
CY		 3334 sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info),
3335 GFP_KERNEL);
e05df3b1
JK		 3336 if (!sbi->nm_info)
3337 return -ENOMEM;
3338
3339 err = init_node_manager(sbi);
3340 if (err)
3341 return err;
3342
4ac91242
CY		 3343 err = init_free_nid_cache(sbi);
3344 if (err)
3345 return err;
3346
7041d5d2
CY		 3347 /* load free nid status from nat_bits table */
3348 load_free_nid_bitmap(sbi);
3349
e2374015 3350 return f2fs_build_free_nids(sbi, true, true);
e05df3b1
JK		 3351}
3352
4d57b86d 3353void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi)
e05df3b1
JK		 3354{
3355 struct f2fs_nm_info *nm_i = NM_I(sbi);
3356 struct free_nid *i, *next_i;
c31e4961
CY		 3357 void *vec[NAT_VEC_SIZE];
3358 struct nat_entry **natvec = (struct nat_entry **)vec;
3359 struct nat_entry_set **setvec = (struct nat_entry_set **)vec;
e05df3b1
JK		 3360 nid_t nid = 0;
3361 unsigned int found;
3362
3363 if (!nm_i)
3364 return;
3365
3366 /* destroy free nid list */
b8559dc2 3367 spin_lock(&nm_i->nid_list_lock);
9a4ffdf5 3368 list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) {
a0761f63 3369 __remove_free_nid(sbi, i, FREE_NID);
b8559dc2 3370 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0 3371 kmem_cache_free(free_nid_slab, i);
b8559dc2 3372 spin_lock(&nm_i->nid_list_lock);
e05df3b1 3373 }
9a4ffdf5
CY		 3374 f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]);
3375 f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]);
3376 f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list));
b8559dc2 3377 spin_unlock(&nm_i->nid_list_lock);
e05df3b1
JK		 3378
3379 /* destroy nat cache */
e4544b63 3380 f2fs_down_write(&nm_i->nat_tree_lock);
e05df3b1 3381 while ((found = __gang_lookup_nat_cache(nm_i,
c31e4961 3382 nid, NAT_VEC_SIZE, natvec))) {
e05df3b1 3383 unsigned idx;
7aed0d45 3384
b6ce391e 3385 nid = nat_get_nid(natvec[found - 1]) + 1;
22969158
CY		 3386 for (idx = 0; idx < found; idx++) {
3387 spin_lock(&nm_i->nat_list_lock);
3388 list_del(&natvec[idx]->list);
3389 spin_unlock(&nm_i->nat_list_lock);
3390
b6ce391e 3391 __del_from_nat_cache(nm_i, natvec[idx]);
22969158 3392 }
e05df3b1 3393 }
a95ba66a 3394 f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]);
7aed0d45
JK		 3395
3396 /* destroy nat set cache */
3397 nid = 0;
c31e4961 3398 memset(vec, 0, sizeof(void *) * NAT_VEC_SIZE);
7aed0d45 3399 while ((found = __gang_lookup_nat_set(nm_i,
c31e4961 3400 nid, NAT_VEC_SIZE, setvec))) {
7aed0d45
JK		 3401 unsigned idx;
3402
3403 nid = setvec[found - 1]->set + 1;
3404 for (idx = 0; idx < found; idx++) {
3405 /* entry_cnt is not zero, when cp_error was occurred */
3406 f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list));
3407 radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set);
3408 kmem_cache_free(nat_entry_set_slab, setvec[idx]);
3409 }
3410 }
e4544b63 3411 f2fs_up_write(&nm_i->nat_tree_lock);
e05df3b1 3412
4ac91242 3413 kvfree(nm_i->nat_block_bitmap);
bb1105e4
JK		 3414 if (nm_i->free_nid_bitmap) {
3415 int i;
3416
3417 for (i = 0; i < nm_i->nat_blocks; i++)
3418 kvfree(nm_i->free_nid_bitmap[i]);
5222595d 3419 kvfree(nm_i->free_nid_bitmap);
bb1105e4 3420 }
586d1492 3421 kvfree(nm_i->free_nid_count);
4ac91242 3422
5222595d
JK		 3423 kvfree(nm_i->nat_bitmap);
3424 kvfree(nm_i->nat_bits);
599a09b2 3425#ifdef CONFIG_F2FS_CHECK_FS
5222595d 3426 kvfree(nm_i->nat_bitmap_mir);
599a09b2 3427#endif
e05df3b1 3428 sbi->nm_info = NULL;
c8eb7024 3429 kfree(nm_i);
e05df3b1
JK		 3430}
3431
4d57b86d 3432int __init f2fs_create_node_manager_caches(void)
e05df3b1 3433{
98510003 3434 nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry",
e8512d2e 3435 sizeof(struct nat_entry));
e05df3b1 3436 if (!nat_entry_slab)
aec71382 3437 goto fail;
e05df3b1 3438
98510003 3439 free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid",
e8512d2e 3440 sizeof(struct free_nid));
aec71382 3441 if (!free_nid_slab)
ce3e6d25 3442 goto destroy_nat_entry;
aec71382 3443
98510003 3444 nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set",
aec71382
CY		 3445 sizeof(struct nat_entry_set));
3446 if (!nat_entry_set_slab)
ce3e6d25 3447 goto destroy_free_nid;
50fa53ec 3448
98510003 3449 fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry",
50fa53ec
CY		 3450 sizeof(struct fsync_node_entry));
3451 if (!fsync_node_entry_slab)
3452 goto destroy_nat_entry_set;
e05df3b1 3453 return 0;
aec71382 3454
50fa53ec
CY		 3455destroy_nat_entry_set:
3456 kmem_cache_destroy(nat_entry_set_slab);
ce3e6d25 3457destroy_free_nid:
aec71382 3458 kmem_cache_destroy(free_nid_slab);
ce3e6d25 3459destroy_nat_entry:
aec71382
CY		 3460 kmem_cache_destroy(nat_entry_slab);
3461fail:
3462 return -ENOMEM;
e05df3b1
JK		 3463}
3464
4d57b86d 3465void f2fs_destroy_node_manager_caches(void)
e05df3b1 3466{
50fa53ec 3467 kmem_cache_destroy(fsync_node_entry_slab);
aec71382 3468 kmem_cache_destroy(nat_entry_set_slab);
e05df3b1
JK		 3469 kmem_cache_destroy(free_nid_slab);
3470 kmem_cache_destroy(nat_entry_slab);
3471}
Linux 6.x block layer and io_uring tree(s)