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overlayfs: Implement splice-read
[linux-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;
636 end = min(end, NIDS_PER_BLOCK);
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)) {
855 unsigned int c_len = f2fs_cluster_blocks_are_contiguous(dn);
856 block_t blkaddr;
857
858 if (!c_len)
859 goto out;
860
861 blkaddr = f2fs_data_blkaddr(dn);
862 if (blkaddr == COMPRESS_ADDR)
863 blkaddr = data_blkaddr(dn->inode, dn->node_page,
864 dn->ofs_in_node + 1);
865
e7547dac 866 f2fs_update_read_extent_tree_range_compressed(dn->inode,
94afd6d6
CY		 867 index, blkaddr,
868 F2FS_I(dn->inode)->i_cluster_size,
869 c_len);
870 }
871out:
e05df3b1
JK		 872 return 0;
873
874release_pages:
875 f2fs_put_page(parent, 1);
876 if (i > 1)
877 f2fs_put_page(npage[0], 0);
878release_out:
879 dn->inode_page = NULL;
880 dn->node_page = NULL;
3cf45747
CY		 881 if (err == -ENOENT) {
882 dn->cur_level = i;
883 dn->max_level = level;
0a2aa8fb 884 dn->ofs_in_node = offset[level];
3cf45747 885 }
e05df3b1
JK		 886 return err;
887}
888
7735730d 889static int truncate_node(struct dnode_of_data *dn)
e05df3b1 890{
4081363f 891 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
e05df3b1 892 struct node_info ni;
7735730d 893 int err;
0ea295dd 894 pgoff_t index;
e05df3b1 895
a9419b63 896 err = f2fs_get_node_info(sbi, dn->nid, &ni, false);
7735730d
CY		 897 if (err)
898 return err;
e05df3b1 899
e05df3b1 900 /* Deallocate node address */
4d57b86d 901 f2fs_invalidate_blocks(sbi, ni.blk_addr);
000519f2 902 dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino);
479f40c4 903 set_node_addr(sbi, &ni, NULL_ADDR, false);
e05df3b1
JK		 904
905 if (dn->nid == dn->inode->i_ino) {
4d57b86d 906 f2fs_remove_orphan_inode(sbi, dn->nid);
e05df3b1 907 dec_valid_inode_count(sbi);
0f18b462 908 f2fs_inode_synced(dn->inode);
e05df3b1 909 }
000519f2 910
e05df3b1 911 clear_node_page_dirty(dn->node_page);
caf0047e 912 set_sbi_flag(sbi, SBI_IS_DIRTY);
e05df3b1 913
0ea295dd 914 index = dn->node_page->index;
e05df3b1 915 f2fs_put_page(dn->node_page, 1);
bf39c00a
JK		 916
917 invalidate_mapping_pages(NODE_MAPPING(sbi),
0ea295dd 918 index, index);
bf39c00a 919
e05df3b1 920 dn->node_page = NULL;
51dd6249 921 trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
7735730d
CY		 922
923 return 0;
e05df3b1
JK		 924}
925
926static int truncate_dnode(struct dnode_of_data *dn)
927{
e05df3b1 928 struct page *page;
7735730d 929 int err;
e05df3b1
JK		 930
931 if (dn->nid == 0)
932 return 1;
933
934 /* get direct node */
4d57b86d 935 page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
45586c70 936 if (PTR_ERR(page) == -ENOENT)
e05df3b1
JK		 937 return 1;
938 else if (IS_ERR(page))
939 return PTR_ERR(page);
940
941 /* Make dnode_of_data for parameter */
942 dn->node_page = page;
943 dn->ofs_in_node = 0;
4d57b86d 944 f2fs_truncate_data_blocks(dn);
7735730d
CY		 945 err = truncate_node(dn);
946 if (err)
947 return err;
948
e05df3b1
JK		 949 return 1;
950}
951
952static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs,
953 int ofs, int depth)
954{
e05df3b1
JK		 955 struct dnode_of_data rdn = *dn;
956 struct page *page;
957 struct f2fs_node *rn;
958 nid_t child_nid;
959 unsigned int child_nofs;
960 int freed = 0;
961 int i, ret;
962
963 if (dn->nid == 0)
964 return NIDS_PER_BLOCK + 1;
965
51dd6249
NJ		 966 trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr);
967
4d57b86d 968 page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
51dd6249
NJ		 969 if (IS_ERR(page)) {
970 trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page));
e05df3b1 971 return PTR_ERR(page);
51dd6249 972 }
e05df3b1 973
4d57b86d 974 f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK);
79344efb 975
45590710 976 rn = F2FS_NODE(page);
e05df3b1
JK		 977 if (depth < 3) {
978 for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) {
979 child_nid = le32_to_cpu(rn->in.nid[i]);
980 if (child_nid == 0)
981 continue;
982 rdn.nid = child_nid;
983 ret = truncate_dnode(&rdn);
984 if (ret < 0)
985 goto out_err;
12719ae1
JK		 986 if (set_nid(page, i, 0, false))
987 dn->node_changed = true;
e05df3b1
JK		 988 }
989 } else {
990 child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1;
991 for (i = ofs; i < NIDS_PER_BLOCK; i++) {
992 child_nid = le32_to_cpu(rn->in.nid[i]);
993 if (child_nid == 0) {
994 child_nofs += NIDS_PER_BLOCK + 1;
995 continue;
996 }
997 rdn.nid = child_nid;
998 ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1);
999 if (ret == (NIDS_PER_BLOCK + 1)) {
12719ae1
JK		 1000 if (set_nid(page, i, 0, false))
1001 dn->node_changed = true;
e05df3b1
JK		 1002 child_nofs += ret;
1003 } else if (ret < 0 && ret != -ENOENT) {
1004 goto out_err;
1005 }
1006 }
1007 freed = child_nofs;
1008 }
1009
1010 if (!ofs) {
1011 /* remove current indirect node */
1012 dn->node_page = page;
7735730d
CY		 1013 ret = truncate_node(dn);
1014 if (ret)
1015 goto out_err;
e05df3b1
JK		 1016 freed++;
1017 } else {
1018 f2fs_put_page(page, 1);
1019 }
51dd6249 1020 trace_f2fs_truncate_nodes_exit(dn->inode, freed);
e05df3b1
JK		 1021 return freed;
1022
1023out_err:
1024 f2fs_put_page(page, 1);
51dd6249 1025 trace_f2fs_truncate_nodes_exit(dn->inode, ret);
e05df3b1
JK		 1026 return ret;
1027}
1028
1029static int truncate_partial_nodes(struct dnode_of_data *dn,
1030 struct f2fs_inode *ri, int *offset, int depth)
1031{
e05df3b1
JK		 1032 struct page *pages[2];
1033 nid_t nid[3];
1034 nid_t child_nid;
1035 int err = 0;
1036 int i;
1037 int idx = depth - 2;
1038
1039 nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
1040 if (!nid[0])
1041 return 0;
1042
1043 /* get indirect nodes in the path */
a225dca3 1044 for (i = 0; i < idx + 1; i++) {
e1c42045 1045 /* reference count'll be increased */
4d57b86d 1046 pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]);
e05df3b1 1047 if (IS_ERR(pages[i])) {
e05df3b1 1048 err = PTR_ERR(pages[i]);
a225dca3 1049 idx = i - 1;
e05df3b1
JK		 1050 goto fail;
1051 }
1052 nid[i + 1] = get_nid(pages[i], offset[i + 1], false);
1053 }
1054
4d57b86d 1055 f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK);
79344efb 1056
e05df3b1 1057 /* free direct nodes linked to a partial indirect node */
a225dca3 1058 for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) {
e05df3b1
JK		 1059 child_nid = get_nid(pages[idx], i, false);
1060 if (!child_nid)
1061 continue;
1062 dn->nid = child_nid;
1063 err = truncate_dnode(dn);
1064 if (err < 0)
1065 goto fail;
12719ae1
JK		 1066 if (set_nid(pages[idx], i, 0, false))
1067 dn->node_changed = true;
e05df3b1
JK		 1068 }
1069
a225dca3 1070 if (offset[idx + 1] == 0) {
e05df3b1
JK		 1071 dn->node_page = pages[idx];
1072 dn->nid = nid[idx];
7735730d
CY		 1073 err = truncate_node(dn);
1074 if (err)
1075 goto fail;
e05df3b1
JK		 1076 } else {
1077 f2fs_put_page(pages[idx], 1);
1078 }
1079 offset[idx]++;
a225dca3 1080 offset[idx + 1] = 0;
1081 idx--;
e05df3b1 1082fail:
a225dca3 1083 for (i = idx; i >= 0; i--)
e05df3b1 1084 f2fs_put_page(pages[i], 1);
51dd6249
NJ		 1085
1086 trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err);
1087
e05df3b1
JK		 1088 return err;
1089}
1090
0a8165d7 1091/*
e05df3b1
JK		 1092 * All the block addresses of data and nodes should be nullified.
1093 */
4d57b86d 1094int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
e05df3b1 1095{
4081363f 1096 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
e05df3b1
JK		 1097 int err = 0, cont = 1;
1098 int level, offset[4], noffset[4];
7dd690c8 1099 unsigned int nofs = 0;
58bfaf44 1100 struct f2fs_inode *ri;
e05df3b1
JK		 1101 struct dnode_of_data dn;
1102 struct page *page;
1103
51dd6249
NJ		 1104 trace_f2fs_truncate_inode_blocks_enter(inode, from);
1105
81ca7350 1106 level = get_node_path(inode, from, offset, noffset);
9039d835
YF		 1107 if (level < 0) {
1108 trace_f2fs_truncate_inode_blocks_exit(inode, level);
adb6dc19 1109 return level;
9039d835 1110 }
ff373558 1111
4d57b86d 1112 page = f2fs_get_node_page(sbi, inode->i_ino);
51dd6249
NJ		 1113 if (IS_ERR(page)) {
1114 trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page));
e05df3b1 1115 return PTR_ERR(page);
51dd6249 1116 }
e05df3b1
JK		 1117
1118 set_new_dnode(&dn, inode, page, NULL, 0);
1119 unlock_page(page);
1120
58bfaf44 1121 ri = F2FS_INODE(page);
e05df3b1
JK		 1122 switch (level) {
1123 case 0:
1124 case 1:
1125 nofs = noffset[1];
1126 break;
1127 case 2:
1128 nofs = noffset[1];
1129 if (!offset[level - 1])
1130 goto skip_partial;
58bfaf44 1131 err = truncate_partial_nodes(&dn, ri, offset, level);
e05df3b1
JK		 1132 if (err < 0 && err != -ENOENT)
1133 goto fail;
1134 nofs += 1 + NIDS_PER_BLOCK;
1135 break;
1136 case 3:
1137 nofs = 5 + 2 * NIDS_PER_BLOCK;
1138 if (!offset[level - 1])
1139 goto skip_partial;
58bfaf44 1140 err = truncate_partial_nodes(&dn, ri, offset, level);
e05df3b1
JK		 1141 if (err < 0 && err != -ENOENT)
1142 goto fail;
1143 break;
1144 default:
1145 BUG();
1146 }
1147
1148skip_partial:
1149 while (cont) {
58bfaf44 1150 dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]);
e05df3b1
JK		 1151 switch (offset[0]) {
1152 case NODE_DIR1_BLOCK:
1153 case NODE_DIR2_BLOCK:
1154 err = truncate_dnode(&dn);
1155 break;
1156
1157 case NODE_IND1_BLOCK:
1158 case NODE_IND2_BLOCK:
1159 err = truncate_nodes(&dn, nofs, offset[1], 2);
1160 break;
1161
1162 case NODE_DIND_BLOCK:
1163 err = truncate_nodes(&dn, nofs, offset[1], 3);
1164 cont = 0;
1165 break;
1166
1167 default:
1168 BUG();
1169 }
1170 if (err < 0 && err != -ENOENT)
1171 goto fail;
1172 if (offset[1] == 0 &&
58bfaf44 1173 ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) {
e05df3b1 1174 lock_page(page);
ff373558 1175 BUG_ON(page->mapping != NODE_MAPPING(sbi));
bae0ee7a 1176 f2fs_wait_on_page_writeback(page, NODE, true, true);
58bfaf44 1177 ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0;
e05df3b1
JK		 1178 set_page_dirty(page);
1179 unlock_page(page);
1180 }
1181 offset[1] = 0;
1182 offset[0]++;
1183 nofs += err;
1184 }
1185fail:
1186 f2fs_put_page(page, 0);
51dd6249 1187 trace_f2fs_truncate_inode_blocks_exit(inode, err);
e05df3b1
JK		 1188 return err > 0 ? 0 : err;
1189}
1190
9c77f754 1191/* caller must lock inode page */
4d57b86d 1192int f2fs_truncate_xattr_node(struct inode *inode)
4f16fb0f 1193{
4081363f 1194 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4f16fb0f
JK		 1195 nid_t nid = F2FS_I(inode)->i_xattr_nid;
1196 struct dnode_of_data dn;
1197 struct page *npage;
7735730d 1198 int err;
4f16fb0f
JK		 1199
1200 if (!nid)
1201 return 0;
1202
4d57b86d 1203 npage = f2fs_get_node_page(sbi, nid);
4f16fb0f
JK		 1204 if (IS_ERR(npage))
1205 return PTR_ERR(npage);
1206
7735730d
CY		 1207 set_new_dnode(&dn, inode, NULL, npage, nid);
1208 err = truncate_node(&dn);
1209 if (err) {
1210 f2fs_put_page(npage, 1);
1211 return err;
1212 }
1213
205b9822 1214 f2fs_i_xnid_write(inode, 0);
65985d93 1215
4f16fb0f
JK		 1216 return 0;
1217}
1218
39936837 1219/*
4f4124d0
CY		 1220 * Caller should grab and release a rwsem by calling f2fs_lock_op() and
1221 * f2fs_unlock_op().
39936837 1222 */
4d57b86d 1223int f2fs_remove_inode_page(struct inode *inode)
e05df3b1 1224{
e05df3b1 1225 struct dnode_of_data dn;
13ec7297 1226 int err;
e05df3b1 1227
c2e69583 1228 set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
4d57b86d 1229 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
13ec7297
CY		 1230 if (err)
1231 return err;
e05df3b1 1232
4d57b86d 1233 err = f2fs_truncate_xattr_node(inode);
13ec7297 1234 if (err) {
c2e69583 1235 f2fs_put_dnode(&dn);
13ec7297 1236 return err;
e05df3b1 1237 }
c2e69583
JK		 1238
1239 /* remove potential inline_data blocks */
1240 if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
1241 S_ISLNK(inode->i_mode))
4d57b86d 1242 f2fs_truncate_data_blocks_range(&dn, 1);
c2e69583 1243
e1c42045 1244 /* 0 is possible, after f2fs_new_inode() has failed */
8d714f8a
JK		 1245 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
1246 f2fs_put_dnode(&dn);
1247 return -EIO;
1248 }
8b6810f8
CY		 1249
1250 if (unlikely(inode->i_blocks != 0 && inode->i_blocks != 8)) {
097a7686
CY		 1251 f2fs_warn(F2FS_I_SB(inode),
1252 "f2fs_remove_inode_page: inconsistent i_blocks, ino:%lu, iblocks:%llu",
1253 inode->i_ino, (unsigned long long)inode->i_blocks);
8b6810f8
CY		 1254 set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_FSCK);
1255 }
c2e69583
JK		 1256
1257 /* will put inode & node pages */
7735730d
CY		 1258 err = truncate_node(&dn);
1259 if (err) {
1260 f2fs_put_dnode(&dn);
1261 return err;
1262 }
13ec7297 1263 return 0;
e05df3b1
JK		 1264}
1265
4d57b86d 1266struct page *f2fs_new_inode_page(struct inode *inode)
e05df3b1 1267{
e05df3b1
JK		 1268 struct dnode_of_data dn;
1269
1270 /* allocate inode page for new inode */
1271 set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino);
44a83ff6
JK		 1272
1273 /* caller should f2fs_put_page(page, 1); */
4d57b86d 1274 return f2fs_new_node_page(&dn, 0);
e05df3b1
JK		 1275}
1276
4d57b86d 1277struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
e05df3b1 1278{
4081363f 1279 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
25cc5d3b 1280 struct node_info new_ni;
e05df3b1
JK		 1281 struct page *page;
1282 int err;
1283
91942321 1284 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
e05df3b1
JK		 1285 return ERR_PTR(-EPERM);
1286
300e129c 1287 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false);
e05df3b1
JK		 1288 if (!page)
1289 return ERR_PTR(-ENOMEM);
1290
0abd675e 1291 if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs))))
9c02740c 1292 goto fail;
0abd675e 1293
25cc5d3b 1294#ifdef CONFIG_F2FS_CHECK_FS
a9419b63 1295 err = f2fs_get_node_info(sbi, dn->nid, &new_ni, false);
7735730d
CY		 1296 if (err) {
1297 dec_valid_node_count(sbi, dn->inode, !ofs);
1298 goto fail;
1299 }
141170b7
CY		 1300 if (unlikely(new_ni.blk_addr != NULL_ADDR)) {
1301 err = -EFSCORRUPTED;
1302 set_sbi_flag(sbi, SBI_NEED_FSCK);
95fa90c9 1303 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
141170b7
CY		 1304 goto fail;
1305 }
25cc5d3b
JK		 1306#endif
1307 new_ni.nid = dn->nid;
e05df3b1 1308 new_ni.ino = dn->inode->i_ino;
25cc5d3b
JK		 1309 new_ni.blk_addr = NULL_ADDR;
1310 new_ni.flag = 0;
1311 new_ni.version = 0;
479f40c4 1312 set_node_addr(sbi, &new_ni, NEW_ADDR, false);
9c02740c 1313
bae0ee7a 1314 f2fs_wait_on_page_writeback(page, NODE, true, true);
9c02740c 1315 fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true);
c5667575 1316 set_cold_node(page, S_ISDIR(dn->inode->i_mode));
237c0790
JK		 1317 if (!PageUptodate(page))
1318 SetPageUptodate(page);
12719ae1
JK		 1319 if (set_page_dirty(page))
1320 dn->node_changed = true;
e05df3b1 1321
4bc8e9bc 1322 if (f2fs_has_xattr_block(ofs))
205b9822 1323 f2fs_i_xnid_write(dn->inode, dn->nid);
479bd73a 1324
e05df3b1
JK		 1325 if (ofs == 0)
1326 inc_valid_inode_count(sbi);
e05df3b1
JK		 1327 return page;
1328
1329fail:
71e9fec5 1330 clear_node_page_dirty(page);
e05df3b1
JK		 1331 f2fs_put_page(page, 1);
1332 return ERR_PTR(err);
1333}
1334
56ae674c
JK		 1335/*
1336 * Caller should do after getting the following values.
1337 * 0: f2fs_put_page(page, 0)
86531d6b 1338 * LOCKED_PAGE or error: f2fs_put_page(page, 1)
56ae674c 1339 */
7649c873 1340static int read_node_page(struct page *page, blk_opf_t op_flags)
e05df3b1 1341{
4081363f 1342 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
e05df3b1 1343 struct node_info ni;
cf04e8eb 1344 struct f2fs_io_info fio = {
05ca3632 1345 .sbi = sbi,
cf04e8eb 1346 .type = NODE,
04d328de
MC		 1347 .op = REQ_OP_READ,
1348 .op_flags = op_flags,
05ca3632 1349 .page = page,
4375a336 1350 .encrypted_page = NULL,
cf04e8eb 1351 };
7735730d 1352 int err;
e05df3b1 1353
54c55c4e 1354 if (PageUptodate(page)) {
b42b179b
CY		 1355 if (!f2fs_inode_chksum_verify(sbi, page)) {
1356 ClearPageUptodate(page);
10f966bb 1357 return -EFSBADCRC;
b42b179b 1358 }
3bdad3c7 1359 return LOCKED_PAGE;
54c55c4e 1360 }
3bdad3c7 1361
a9419b63 1362 err = f2fs_get_node_info(sbi, page->index, &ni, false);
7735730d
CY		 1363 if (err)
1364 return err;
e05df3b1 1365
b7ec2061 1366 /* NEW_ADDR can be seen, after cp_error drops some dirty node pages */
e6ecb142 1367 if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR)) {
2bca1e23 1368 ClearPageUptodate(page);
e05df3b1 1369 return -ENOENT;
393ff91f
JK		 1370 }
1371
7a9d7548 1372 fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr;
8b83ac81
CY		 1373
1374 err = f2fs_submit_page_bio(&fio);
1375
1376 if (!err)
34a23525 1377 f2fs_update_iostat(sbi, NULL, FS_NODE_READ_IO, F2FS_BLKSIZE);
8b83ac81
CY		 1378
1379 return err;
e05df3b1
JK		 1380}
1381
0a8165d7 1382/*
e05df3b1
JK		 1383 * Readahead a node page
1384 */
4d57b86d 1385void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 1386{
e05df3b1 1387 struct page *apage;
56ae674c 1388 int err;
e05df3b1 1389
e8458725
CY		 1390 if (!nid)
1391 return;
4d57b86d 1392 if (f2fs_check_nid_range(sbi, nid))
a4f843bd 1393 return;
e8458725 1394
5ec2d99d 1395 apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid);
999270de 1396 if (apage)
393ff91f 1397 return;
e05df3b1 1398
300e129c 1399 apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
e05df3b1
JK		 1400 if (!apage)
1401 return;
1402
70246286 1403 err = read_node_page(apage, REQ_RAHEAD);
86531d6b 1404 f2fs_put_page(apage, err ? 1 : 0);
e05df3b1
JK		 1405}
1406
17a0ee55 1407static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid,
0e022ea8 1408 struct page *parent, int start)
e05df3b1 1409{
e05df3b1 1410 struct page *page;
0e022ea8 1411 int err;
e05df3b1 1412
e05df3b1
JK		 1413 if (!nid)
1414 return ERR_PTR(-ENOENT);
4d57b86d 1415 if (f2fs_check_nid_range(sbi, nid))
a4f843bd 1416 return ERR_PTR(-EINVAL);
afcb7ca0 1417repeat:
300e129c 1418 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false);
e05df3b1
JK		 1419 if (!page)
1420 return ERR_PTR(-ENOMEM);
1421
70fd7614 1422 err = read_node_page(page, 0);
86531d6b 1423 if (err < 0) {
a7b8618a 1424 goto out_put_err;
86531d6b 1425 } else if (err == LOCKED_PAGE) {
1f258ec1 1426 err = 0;
56ae674c 1427 goto page_hit;
86531d6b 1428 }
e05df3b1 1429
0e022ea8 1430 if (parent)
4d57b86d 1431 f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE);
c718379b 1432
e05df3b1 1433 lock_page(page);
0e022ea8 1434
4ef51a8f 1435 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
afcb7ca0
JK		 1436 f2fs_put_page(page, 1);
1437 goto repeat;
1438 }
1563ac75 1439
1f258ec1
CY		 1440 if (unlikely(!PageUptodate(page))) {
1441 err = -EIO;
1563ac75 1442 goto out_err;
1f258ec1 1443 }
704956ec
CY		 1444
1445 if (!f2fs_inode_chksum_verify(sbi, page)) {
10f966bb 1446 err = -EFSBADCRC;
704956ec
CY		 1447 goto out_err;
1448 }
e0f56cb4 1449page_hit:
a7b8618a
JK		 1450 if (likely(nid == nid_of_node(page)))
1451 return page;
1452
1453 f2fs_warn(sbi, "inconsistent node block, nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
dcbb4c10
JP		 1454 nid, nid_of_node(page), ino_of_node(page),
1455 ofs_of_node(page), cpver_of_node(page),
1456 next_blkaddr_of_node(page));
a7b8618a
JK		 1457 set_sbi_flag(sbi, SBI_NEED_FSCK);
1458 err = -EINVAL;
0c9df7fb 1459out_err:
a7b8618a
JK		 1460 ClearPageUptodate(page);
1461out_put_err:
82c7863e
JK		 1462 /* ENOENT comes from read_node_page which is not an error. */
1463 if (err != -ENOENT)
1464 f2fs_handle_page_eio(sbi, page->index, NODE);
a7b8618a
JK		 1465 f2fs_put_page(page, 1);
1466 return ERR_PTR(err);
e05df3b1
JK		 1467}
1468
4d57b86d 1469struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid)
0e022ea8
CY		 1470{
1471 return __get_node_page(sbi, nid, NULL, 0);
1472}
1473
4d57b86d 1474struct page *f2fs_get_node_page_ra(struct page *parent, int start)
0e022ea8
CY		 1475{
1476 struct f2fs_sb_info *sbi = F2FS_P_SB(parent);
1477 nid_t nid = get_nid(parent, start, false);
1478
1479 return __get_node_page(sbi, nid, parent, start);
1480}
1481
2049d4fc
JK		 1482static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
1483{
1484 struct inode *inode;
1485 struct page *page;
0f3311a8 1486 int ret;
2049d4fc
JK		 1487
1488 /* should flush inline_data before evict_inode */
1489 inode = ilookup(sbi->sb, ino);
1490 if (!inode)
1491 return;
1492
01eccef7
CY		 1493 page = f2fs_pagecache_get_page(inode->i_mapping, 0,
1494 FGP_LOCK|FGP_NOWAIT, 0);
2049d4fc
JK		 1495 if (!page)
1496 goto iput_out;
1497
1498 if (!PageUptodate(page))
1499 goto page_out;
1500
1501 if (!PageDirty(page))
1502 goto page_out;
1503
1504 if (!clear_page_dirty_for_io(page))
1505 goto page_out;
1506
0f3311a8
CY		 1507 ret = f2fs_write_inline_data(inode, page);
1508 inode_dec_dirty_pages(inode);
4d57b86d 1509 f2fs_remove_dirty_inode(inode);
0f3311a8 1510 if (ret)
2049d4fc
JK		 1511 set_page_dirty(page);
1512page_out:
4a6de50d 1513 f2fs_put_page(page, 1);
2049d4fc
JK		 1514iput_out:
1515 iput(inode);
1516}
1517
608514de
JK		 1518static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino)
1519{
028a63a6 1520 pgoff_t index;
4f4a4f0f 1521 struct folio_batch fbatch;
608514de 1522 struct page *last_page = NULL;
4f4a4f0f 1523 int nr_folios;
608514de 1524
4f4a4f0f 1525 folio_batch_init(&fbatch);
608514de 1526 index = 0;
028a63a6 1527
4f4a4f0f
VMO		 1528 while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index,
1529 (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1530 &fbatch))) {
028a63a6 1531 int i;
608514de 1532
4f4a4f0f
VMO		 1533 for (i = 0; i < nr_folios; i++) {
1534 struct page *page = &fbatch.folios[i]->page;
608514de
JK		 1535
1536 if (unlikely(f2fs_cp_error(sbi))) {
1537 f2fs_put_page(last_page, 0);
4f4a4f0f 1538 folio_batch_release(&fbatch);
608514de
JK		 1539 return ERR_PTR(-EIO);
1540 }
1541
1542 if (!IS_DNODE(page) || !is_cold_node(page))
1543 continue;
1544 if (ino_of_node(page) != ino)
1545 continue;
1546
1547 lock_page(page);
1548
1549 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1550continue_unlock:
1551 unlock_page(page);
1552 continue;
1553 }
1554 if (ino_of_node(page) != ino)
1555 goto continue_unlock;
1556
1557 if (!PageDirty(page)) {
1558 /* someone wrote it for us */
1559 goto continue_unlock;
1560 }
1561
1562 if (last_page)
1563 f2fs_put_page(last_page, 0);
1564
1565 get_page(page);
1566 last_page = page;
1567 unlock_page(page);
1568 }
4f4a4f0f 1569 folio_batch_release(&fbatch);
608514de
JK		 1570 cond_resched();
1571 }
1572 return last_page;
1573}
1574
d68f735b 1575static int __write_node_page(struct page *page, bool atomic, bool *submitted,
b0af6d49 1576 struct writeback_control *wbc, bool do_balance,
50fa53ec 1577 enum iostat_type io_type, unsigned int *seq_id)
faa24895
JK		 1578{
1579 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
1580 nid_t nid;
1581 struct node_info ni;
1582 struct f2fs_io_info fio = {
1583 .sbi = sbi,
39d787be 1584 .ino = ino_of_node(page),
faa24895
JK		 1585 .type = NODE,
1586 .op = REQ_OP_WRITE,
1587 .op_flags = wbc_to_write_flags(wbc),
1588 .page = page,
1589 .encrypted_page = NULL,
2eae077e 1590 .submitted = 0,
b0af6d49 1591 .io_type = io_type,
578c6478 1592 .io_wbc = wbc,
faa24895 1593 };
50fa53ec 1594 unsigned int seq;
faa24895
JK		 1595
1596 trace_f2fs_writepage(page, NODE);
1597
6d7c865c 1598 if (unlikely(f2fs_cp_error(sbi))) {
28607bf3
JK		 1599 ClearPageUptodate(page);
1600 dec_page_count(sbi, F2FS_DIRTY_NODES);
1601 unlock_page(page);
1602 return 0;
6d7c865c 1603 }
db198ae0 1604
faa24895
JK		 1605 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
1606 goto redirty_out;
faa24895 1607
100c0655
JK		 1608 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
1609 wbc->sync_mode == WB_SYNC_NONE &&
fd8c8caf
CY		 1610 IS_DNODE(page) && is_cold_node(page))
1611 goto redirty_out;
1612
faa24895
JK		 1613 /* get old block addr of this node page */
1614 nid = nid_of_node(page);
1615 f2fs_bug_on(sbi, page->index != nid);
1616
a9419b63 1617 if (f2fs_get_node_info(sbi, nid, &ni, !do_balance))
7735730d
CY		 1618 goto redirty_out;
1619
faa24895 1620 if (wbc->for_reclaim) {
e4544b63 1621 if (!f2fs_down_read_trylock(&sbi->node_write))
faa24895
JK		 1622 goto redirty_out;
1623 } else {
e4544b63 1624 f2fs_down_read(&sbi->node_write);
faa24895
JK		 1625 }
1626
faa24895
JK		 1627 /* This page is already truncated */
1628 if (unlikely(ni.blk_addr == NULL_ADDR)) {
1629 ClearPageUptodate(page);
1630 dec_page_count(sbi, F2FS_DIRTY_NODES);
e4544b63 1631 f2fs_up_read(&sbi->node_write);
faa24895
JK		 1632 unlock_page(page);
1633 return 0;
1634 }
1635
c9b60788 1636 if (__is_valid_data_blkaddr(ni.blk_addr) &&
93770ab7
CY		 1637 !f2fs_is_valid_blkaddr(sbi, ni.blk_addr,
1638 DATA_GENERIC_ENHANCE)) {
e4544b63 1639 f2fs_up_read(&sbi->node_write);
c9b60788 1640 goto redirty_out;
89d13c38 1641 }
c9b60788 1642
c550e25b 1643 if (atomic && !test_opt(sbi, NOBARRIER) && !f2fs_sb_has_blkzoned(sbi))
e7c75ab0
JK		 1644 fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
1645
dc5a9412 1646 /* should add to global list before clearing PAGECACHE status */
50fa53ec
CY		 1647 if (f2fs_in_warm_node_list(sbi, page)) {
1648 seq = f2fs_add_fsync_node_entry(sbi, page);
1649 if (seq_id)
1650 *seq_id = seq;
1651 }
1652
dc5a9412 1653 set_page_writeback(page);
dc5a9412 1654
faa24895 1655 fio.old_blkaddr = ni.blk_addr;
4d57b86d 1656 f2fs_do_write_node_page(nid, &fio);
faa24895
JK		 1657 set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page));
1658 dec_page_count(sbi, F2FS_DIRTY_NODES);
e4544b63 1659 f2fs_up_read(&sbi->node_write);
faa24895 1660
d68f735b 1661 if (wbc->for_reclaim) {
bab475c5 1662 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE);
d68f735b
JK		 1663 submitted = NULL;
1664 }
faa24895
JK		 1665
1666 unlock_page(page);
1667
d68f735b 1668 if (unlikely(f2fs_cp_error(sbi))) {
b9109b0e 1669 f2fs_submit_merged_write(sbi, NODE);
d68f735b
JK		 1670 submitted = NULL;
1671 }
1672 if (submitted)
1673 *submitted = fio.submitted;
faa24895 1674
401db79f
YS		 1675 if (do_balance)
1676 f2fs_balance_fs(sbi, false);
faa24895
JK		 1677 return 0;
1678
1679redirty_out:
1680 redirty_page_for_writepage(wbc, page);
1681 return AOP_WRITEPAGE_ACTIVATE;
1682}
1683
48018b4c 1684int f2fs_move_node_page(struct page *node_page, int gc_type)
f15194fc 1685{
48018b4c
CY		 1686 int err = 0;
1687
f15194fc
YH		 1688 if (gc_type == FG_GC) {
1689 struct writeback_control wbc = {
1690 .sync_mode = WB_SYNC_ALL,
1691 .nr_to_write = 1,
1692 .for_reclaim = 0,
1693 };
1694
bae0ee7a 1695 f2fs_wait_on_page_writeback(node_page, NODE, true, true);
8d64d365
CY		 1696
1697 set_page_dirty(node_page);
1698
48018b4c
CY		 1699 if (!clear_page_dirty_for_io(node_page)) {
1700 err = -EAGAIN;
f15194fc 1701 goto out_page;
48018b4c 1702 }
f15194fc
YH		 1703
1704 if (__write_node_page(node_page, false, NULL,
48018b4c
CY		 1705 &wbc, false, FS_GC_NODE_IO, NULL)) {
1706 err = -EAGAIN;
f15194fc 1707 unlock_page(node_page);
48018b4c 1708 }
f15194fc
YH		 1709 goto release_page;
1710 } else {
1711 /* set page dirty and write it */
1712 if (!PageWriteback(node_page))
1713 set_page_dirty(node_page);
1714 }
1715out_page:
1716 unlock_page(node_page);
1717release_page:
1718 f2fs_put_page(node_page, 0);
48018b4c 1719 return err;
f15194fc
YH		 1720}
1721
faa24895
JK		 1722static int f2fs_write_node_page(struct page *page,
1723 struct writeback_control *wbc)
1724{
50fa53ec
CY		 1725 return __write_node_page(page, false, NULL, wbc, false,
1726 FS_NODE_IO, NULL);
faa24895
JK		 1727}
1728
4d57b86d 1729int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
50fa53ec
CY		 1730 struct writeback_control *wbc, bool atomic,
1731 unsigned int *seq_id)
e05df3b1 1732{
028a63a6 1733 pgoff_t index;
e6e46e1e 1734 struct folio_batch fbatch;
c267ec15 1735 int ret = 0;
608514de
JK		 1736 struct page *last_page = NULL;
1737 bool marked = false;
26de9b11 1738 nid_t ino = inode->i_ino;
e6e46e1e 1739 int nr_folios;
bab475c5 1740 int nwritten = 0;
52681375 1741
608514de
JK		 1742 if (atomic) {
1743 last_page = last_fsync_dnode(sbi, ino);
1744 if (IS_ERR_OR_NULL(last_page))
1745 return PTR_ERR_OR_ZERO(last_page);
1746 }
1747retry:
e6e46e1e 1748 folio_batch_init(&fbatch);
52681375 1749 index = 0;
028a63a6 1750
e6e46e1e
VMO		 1751 while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index,
1752 (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1753 &fbatch))) {
028a63a6 1754 int i;
52681375 1755
e6e46e1e
VMO		 1756 for (i = 0; i < nr_folios; i++) {
1757 struct page *page = &fbatch.folios[i]->page;
d68f735b 1758 bool submitted = false;
52681375
JK		 1759
1760 if (unlikely(f2fs_cp_error(sbi))) {
608514de 1761 f2fs_put_page(last_page, 0);
e6e46e1e 1762 folio_batch_release(&fbatch);
9de69279
CY		 1763 ret = -EIO;
1764 goto out;
52681375
JK		 1765 }
1766
1767 if (!IS_DNODE(page) || !is_cold_node(page))
1768 continue;
1769 if (ino_of_node(page) != ino)
1770 continue;
1771
1772 lock_page(page);
1773
1774 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1775continue_unlock:
1776 unlock_page(page);
1777 continue;
1778 }
1779 if (ino_of_node(page) != ino)
1780 goto continue_unlock;
1781
608514de 1782 if (!PageDirty(page) && page != last_page) {
52681375
JK		 1783 /* someone wrote it for us */
1784 goto continue_unlock;
1785 }
1786
bae0ee7a 1787 f2fs_wait_on_page_writeback(page, NODE, true, true);
52681375 1788
d29fd172
JK		 1789 set_fsync_mark(page, 0);
1790 set_dentry_mark(page, 0);
1791
608514de
JK		 1792 if (!atomic || page == last_page) {
1793 set_fsync_mark(page, 1);
47c8ebcc 1794 percpu_counter_inc(&sbi->rf_node_block_count);
26de9b11
JK		 1795 if (IS_INODE(page)) {
1796 if (is_inode_flag_set(inode,
1797 FI_DIRTY_INODE))
4d57b86d 1798 f2fs_update_inode(inode, page);
608514de 1799 set_dentry_mark(page,
4d57b86d 1800 f2fs_need_dentry_mark(sbi, ino));
26de9b11 1801 }
a87aff1d 1802 /* may be written by other thread */
608514de
JK		 1803 if (!PageDirty(page))
1804 set_page_dirty(page);
1805 }
1806
1807 if (!clear_page_dirty_for_io(page))
1808 goto continue_unlock;
52681375 1809
e7c75ab0 1810 ret = __write_node_page(page, atomic &&
d68f735b 1811 page == last_page,
b0af6d49 1812 &submitted, wbc, true,
50fa53ec 1813 FS_NODE_IO, seq_id);
c267ec15 1814 if (ret) {
52681375 1815 unlock_page(page);
608514de
JK		 1816 f2fs_put_page(last_page, 0);
1817 break;
d68f735b 1818 } else if (submitted) {
bab475c5 1819 nwritten++;
608514de 1820 }
3f5f4959 1821
608514de
JK		 1822 if (page == last_page) {
1823 f2fs_put_page(page, 0);
1824 marked = true;
52681375 1825 break;
c267ec15 1826 }
52681375 1827 }
e6e46e1e 1828 folio_batch_release(&fbatch);
52681375
JK		 1829 cond_resched();
1830
608514de 1831 if (ret || marked)
52681375
JK		 1832 break;
1833 }
608514de 1834 if (!ret && atomic && !marked) {
dcbb4c10
JP		 1835 f2fs_debug(sbi, "Retry to write fsync mark: ino=%u, idx=%lx",
1836 ino, last_page->index);
608514de 1837 lock_page(last_page);
bae0ee7a 1838 f2fs_wait_on_page_writeback(last_page, NODE, true, true);
608514de
JK		 1839 set_page_dirty(last_page);
1840 unlock_page(last_page);
1841 goto retry;
1842 }
9de69279 1843out:
bab475c5
CY		 1844 if (nwritten)
1845 f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE);
5f029c04 1846 return ret ? -EIO : 0;
52681375
JK		 1847}
1848
052a82d8
CY		 1849static int f2fs_match_ino(struct inode *inode, unsigned long ino, void *data)
1850{
1851 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1852 bool clean;
1853
1854 if (inode->i_ino != ino)
1855 return 0;
1856
1857 if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
1858 return 0;
1859
1860 spin_lock(&sbi->inode_lock[DIRTY_META]);
1861 clean = list_empty(&F2FS_I(inode)->gdirty_list);
1862 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1863
1864 if (clean)
1865 return 0;
1866
1867 inode = igrab(inode);
1868 if (!inode)
1869 return 0;
1870 return 1;
1871}
1872
1873static bool flush_dirty_inode(struct page *page)
1874{
1875 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
1876 struct inode *inode;
1877 nid_t ino = ino_of_node(page);
1878
1879 inode = find_inode_nowait(sbi->sb, ino, f2fs_match_ino, NULL);
1880 if (!inode)
1881 return false;
1882
1883 f2fs_update_inode(inode, page);
1884 unlock_page(page);
1885
1886 iput(inode);
1887 return true;
1888}
1889
68e79baf 1890void f2fs_flush_inline_data(struct f2fs_sb_info *sbi)
34c061ad
SL		 1891{
1892 pgoff_t index = 0;
a40a4ad1
VMO		 1893 struct folio_batch fbatch;
1894 int nr_folios;
34c061ad 1895
a40a4ad1 1896 folio_batch_init(&fbatch);
34c061ad 1897
a40a4ad1
VMO		 1898 while ((nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi), &index,
1899 (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1900 &fbatch))) {
34c061ad
SL		 1901 int i;
1902
a40a4ad1
VMO		 1903 for (i = 0; i < nr_folios; i++) {
1904 struct page *page = &fbatch.folios[i]->page;
34c061ad
SL		 1905
1906 if (!IS_DNODE(page))
1907 continue;
1908
1909 lock_page(page);
1910
1911 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
1912continue_unlock:
1913 unlock_page(page);
1914 continue;
1915 }
1916
1917 if (!PageDirty(page)) {
1918 /* someone wrote it for us */
1919 goto continue_unlock;
1920 }
1921
1922 /* flush inline_data, if it's async context. */
b763f3be
CY		 1923 if (page_private_inline(page)) {
1924 clear_page_private_inline(page);
34c061ad
SL		 1925 unlock_page(page);
1926 flush_inline_data(sbi, ino_of_node(page));
1927 continue;
1928 }
1929 unlock_page(page);
1930 }
a40a4ad1 1931 folio_batch_release(&fbatch);
34c061ad
SL		 1932 cond_resched();
1933 }
34c061ad
SL		 1934}
1935
4d57b86d
CY		 1936int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
1937 struct writeback_control *wbc,
b0af6d49 1938 bool do_balance, enum iostat_type io_type)
52681375 1939{
028a63a6 1940 pgoff_t index;
7525486a 1941 struct folio_batch fbatch;
52681375 1942 int step = 0;
12bb0a8f 1943 int nwritten = 0;
3f5f4959 1944 int ret = 0;
7525486a 1945 int nr_folios, done = 0;
e05df3b1 1946
7525486a 1947 folio_batch_init(&fbatch);
e05df3b1
JK		 1948
1949next_step:
1950 index = 0;
028a63a6 1951
7525486a
VMO		 1952 while (!done && (nr_folios = filemap_get_folios_tag(NODE_MAPPING(sbi),
1953 &index, (pgoff_t)-1, PAGECACHE_TAG_DIRTY,
1954 &fbatch))) {
028a63a6 1955 int i;
e05df3b1 1956
7525486a
VMO		 1957 for (i = 0; i < nr_folios; i++) {
1958 struct page *page = &fbatch.folios[i]->page;
d68f735b 1959 bool submitted = false;
e05df3b1 1960
c29fd0c0
CY		 1961 /* give a priority to WB_SYNC threads */
1962 if (atomic_read(&sbi->wb_sync_req[NODE]) &&
1963 wbc->sync_mode == WB_SYNC_NONE) {
1964 done = 1;
1965 break;
1966 }
1967
e05df3b1
JK		 1968 /*
1969 * flushing sequence with step:
1970 * 0. indirect nodes
1971 * 1. dentry dnodes
1972 * 2. file dnodes
1973 */
1974 if (step == 0 && IS_DNODE(page))
1975 continue;
1976 if (step == 1 && (!IS_DNODE(page) ||
1977 is_cold_node(page)))
1978 continue;
1979 if (step == 2 && (!IS_DNODE(page) ||
1980 !is_cold_node(page)))
1981 continue;
9a4cbc9e 1982lock_node:
4b270a8c
CY		 1983 if (wbc->sync_mode == WB_SYNC_ALL)
1984 lock_page(page);
1985 else if (!trylock_page(page))
e05df3b1
JK		 1986 continue;
1987
4ef51a8f 1988 if (unlikely(page->mapping != NODE_MAPPING(sbi))) {
e05df3b1
JK		 1989continue_unlock:
1990 unlock_page(page);
1991 continue;
1992 }
e05df3b1
JK		 1993
1994 if (!PageDirty(page)) {
1995 /* someone wrote it for us */
1996 goto continue_unlock;
1997 }
1998
b0f3b87f
JK		 1999 /* flush inline_data/inode, if it's async context. */
2000 if (!do_balance)
2001 goto write_node;
2002
2003 /* flush inline_data */
b763f3be
CY		 2004 if (page_private_inline(page)) {
2005 clear_page_private_inline(page);
2049d4fc
JK		 2006 unlock_page(page);
2007 flush_inline_data(sbi, ino_of_node(page));
9a4cbc9e 2008 goto lock_node;
052a82d8
CY		 2009 }
2010
2011 /* flush dirty inode */
7859e97f
JK		 2012 if (IS_INODE(page) && flush_dirty_inode(page))
2013 goto lock_node;
b0f3b87f 2014write_node:
bae0ee7a 2015 f2fs_wait_on_page_writeback(page, NODE, true, true);
fa3d2bdf 2016
e05df3b1
JK		 2017 if (!clear_page_dirty_for_io(page))
2018 goto continue_unlock;
2019
52681375
JK		 2020 set_fsync_mark(page, 0);
2021 set_dentry_mark(page, 0);
52746519 2022
401db79f 2023 ret = __write_node_page(page, false, &submitted,
50fa53ec 2024 wbc, do_balance, io_type, NULL);
d68f735b 2025 if (ret)
52746519 2026 unlock_page(page);
d68f735b 2027 else if (submitted)
3f5f4959 2028 nwritten++;
e05df3b1
JK		 2029
2030 if (--wbc->nr_to_write == 0)
2031 break;
2032 }
7525486a 2033 folio_batch_release(&fbatch);
e05df3b1
JK		 2034 cond_resched();
2035
2036 if (wbc->nr_to_write == 0) {
2037 step = 2;
2038 break;
2039 }
2040 }
2041
2042 if (step < 2) {
100c0655
JK		 2043 if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
2044 wbc->sync_mode == WB_SYNC_NONE && step == 1)
fd8c8caf 2045 goto out;
e05df3b1
JK		 2046 step++;
2047 goto next_step;
2048 }
fd8c8caf 2049out:
3f5f4959 2050 if (nwritten)
b9109b0e 2051 f2fs_submit_merged_write(sbi, NODE);
db198ae0
CY		 2052
2053 if (unlikely(f2fs_cp_error(sbi)))
2054 return -EIO;
3f5f4959 2055 return ret;
e05df3b1
JK		 2056}
2057
50fa53ec
CY		 2058int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
2059 unsigned int seq_id)
cfe58f9d 2060{
50fa53ec
CY		 2061 struct fsync_node_entry *fn;
2062 struct page *page;
2063 struct list_head *head = &sbi->fsync_node_list;
2064 unsigned long flags;
2065 unsigned int cur_seq_id = 0;
280db3c8 2066 int ret2, ret = 0;
cfe58f9d 2067
50fa53ec
CY		 2068 while (seq_id && cur_seq_id < seq_id) {
2069 spin_lock_irqsave(&sbi->fsync_node_lock, flags);
2070 if (list_empty(head)) {
2071 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
2072 break;
2073 }
2074 fn = list_first_entry(head, struct fsync_node_entry, list);
2075 if (fn->seq_id > seq_id) {
2076 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
2077 break;
2078 }
2079 cur_seq_id = fn->seq_id;
2080 page = fn->page;
2081 get_page(page);
2082 spin_unlock_irqrestore(&sbi->fsync_node_lock, flags);
4ef51a8f 2083
bae0ee7a 2084 f2fs_wait_on_page_writeback(page, NODE, true, false);
cfe58f9d 2085
50fa53ec 2086 put_page(page);
cfe58f9d 2087
50fa53ec
CY		 2088 if (ret)
2089 break;
cfe58f9d
JK		 2090 }
2091
280db3c8 2092 ret2 = filemap_check_errors(NODE_MAPPING(sbi));
cfe58f9d
JK		 2093 if (!ret)
2094 ret = ret2;
50fa53ec 2095
cfe58f9d
JK		 2096 return ret;
2097}
2098
e05df3b1
JK		 2099static int f2fs_write_node_pages(struct address_space *mapping,
2100 struct writeback_control *wbc)
2101{
4081363f 2102 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
9dfa1baf 2103 struct blk_plug plug;
50c8cdb3 2104 long diff;
e05df3b1 2105
0771fcc7
CY		 2106 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
2107 goto skip_write;
2108
4660f9c0 2109 /* balancing f2fs's metadata in background */
7bcd0cfa 2110 f2fs_balance_fs_bg(sbi, true);
e05df3b1 2111
a7fdffbd 2112 /* collect a number of dirty node pages and write together */
812a9597
JK		 2113 if (wbc->sync_mode != WB_SYNC_ALL &&
2114 get_pages(sbi, F2FS_DIRTY_NODES) <
2115 nr_pages_to_skip(sbi, NODE))
d3baf95d 2116 goto skip_write;
a7fdffbd 2117
c29fd0c0
CY		 2118 if (wbc->sync_mode == WB_SYNC_ALL)
2119 atomic_inc(&sbi->wb_sync_req[NODE]);
34415099
CY		 2120 else if (atomic_read(&sbi->wb_sync_req[NODE])) {
2121 /* to avoid potential deadlock */
2122 if (current->plug)
2123 blk_finish_plug(current->plug);
c29fd0c0 2124 goto skip_write;
34415099 2125 }
c29fd0c0 2126
d31c7c3f
YH		 2127 trace_f2fs_writepages(mapping->host, wbc, NODE);
2128
50c8cdb3 2129 diff = nr_pages_to_write(sbi, NODE, wbc);
9dfa1baf 2130 blk_start_plug(&plug);
4d57b86d 2131 f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO);
9dfa1baf 2132 blk_finish_plug(&plug);
50c8cdb3 2133 wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff);
c29fd0c0
CY		 2134
2135 if (wbc->sync_mode == WB_SYNC_ALL)
2136 atomic_dec(&sbi->wb_sync_req[NODE]);
e05df3b1 2137 return 0;
d3baf95d
JK		 2138
2139skip_write:
2140 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES);
d31c7c3f 2141 trace_f2fs_writepages(mapping->host, wbc, NODE);
d3baf95d 2142 return 0;
e05df3b1
JK		 2143}
2144
cbc975b1
MWO		 2145static bool f2fs_dirty_node_folio(struct address_space *mapping,
2146 struct folio *folio)
e05df3b1 2147{
cbc975b1 2148 trace_f2fs_set_page_dirty(&folio->page, NODE);
26c6b887 2149
cbc975b1
MWO		 2150 if (!folio_test_uptodate(folio))
2151 folio_mark_uptodate(folio);
54c55c4e 2152#ifdef CONFIG_F2FS_CHECK_FS
cbc975b1 2153 if (IS_INODE(&folio->page))
29c87793 2154 f2fs_inode_chksum_set(F2FS_M_SB(mapping), &folio->page);
54c55c4e 2155#endif
9b7eadd9 2156 if (filemap_dirty_folio(mapping, folio)) {
29c87793 2157 inc_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES);
cbc975b1
MWO		 2158 set_page_private_reference(&folio->page);
2159 return true;
e05df3b1 2160 }
cbc975b1 2161 return false;
e05df3b1
JK		 2162}
2163
0a8165d7 2164/*
e05df3b1
JK		 2165 * Structure of the f2fs node operations
2166 */
2167const struct address_space_operations f2fs_node_aops = {
2168 .writepage = f2fs_write_node_page,
2169 .writepages = f2fs_write_node_pages,
cbc975b1 2170 .dirty_folio = f2fs_dirty_node_folio,
91503996 2171 .invalidate_folio = f2fs_invalidate_folio,
c26cd045 2172 .release_folio = f2fs_release_folio,
1d5b9bd6 2173 .migrate_folio = filemap_migrate_folio,
e05df3b1
JK		 2174};
2175
8a7ed66a
JK		 2176static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i,
2177 nid_t n)
e05df3b1 2178{
8a7ed66a 2179 return radix_tree_lookup(&nm_i->free_nid_root, n);
e05df3b1
JK		 2180}
2181
9a4ffdf5 2182static int __insert_free_nid(struct f2fs_sb_info *sbi,
b815bdc7 2183 struct free_nid *i)
e05df3b1 2184{
b8559dc2 2185 struct f2fs_nm_info *nm_i = NM_I(sbi);
a0761f63 2186 int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i);
5f029c04 2187
a0761f63
FL		 2188 if (err)
2189 return err;
eb0aa4b8 2190
b815bdc7
LS		 2191 nm_i->nid_cnt[FREE_NID]++;
2192 list_add_tail(&i->list, &nm_i->free_nid_list);
eb0aa4b8 2193 return 0;
b8559dc2
CY		 2194}
2195
9a4ffdf5 2196static void __remove_free_nid(struct f2fs_sb_info *sbi,
a0761f63 2197 struct free_nid *i, enum nid_state state)
b8559dc2
CY		 2198{
2199 struct f2fs_nm_info *nm_i = NM_I(sbi);
2200
9a4ffdf5
CY		 2201 f2fs_bug_on(sbi, state != i->state);
2202 nm_i->nid_cnt[state]--;
2203 if (state == FREE_NID)
2204 list_del(&i->list);
a0761f63
FL		 2205 radix_tree_delete(&nm_i->free_nid_root, i->nid);
2206}
2207
2208static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i,
2209 enum nid_state org_state, enum nid_state dst_state)
b8559dc2
CY		 2210{
2211 struct f2fs_nm_info *nm_i = NM_I(sbi);
2212
a0761f63
FL		 2213 f2fs_bug_on(sbi, org_state != i->state);
2214 i->state = dst_state;
2215 nm_i->nid_cnt[org_state]--;
2216 nm_i->nid_cnt[dst_state]++;
2217
2218 switch (dst_state) {
2219 case PREALLOC_NID:
2220 list_del(&i->list);
2221 break;
2222 case FREE_NID:
2223 list_add_tail(&i->list, &nm_i->free_nid_list);
2224 break;
2225 default:
2226 BUG_ON(1);
2227 }
e05df3b1
JK		 2228}
2229
94c821fb
CY		 2230bool f2fs_nat_bitmap_enabled(struct f2fs_sb_info *sbi)
2231{
2232 struct f2fs_nm_info *nm_i = NM_I(sbi);
2233 unsigned int i;
2234 bool ret = true;
2235
e4544b63 2236 f2fs_down_read(&nm_i->nat_tree_lock);
94c821fb
CY		 2237 for (i = 0; i < nm_i->nat_blocks; i++) {
2238 if (!test_bit_le(i, nm_i->nat_block_bitmap)) {
2239 ret = false;
2240 break;
2241 }
2242 }
e4544b63 2243 f2fs_up_read(&nm_i->nat_tree_lock);
94c821fb
CY		 2244
2245 return ret;
2246}
2247
5921aaa1
L		 2248static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid,
2249 bool set, bool build)
2250{
2251 struct f2fs_nm_info *nm_i = NM_I(sbi);
2252 unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid);
2253 unsigned int nid_ofs = nid - START_NID(nid);
2254
2255 if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap))
2256 return;
2257
2258 if (set) {
2259 if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
2260 return;
2261 __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
2262 nm_i->free_nid_count[nat_ofs]++;
2263 } else {
2264 if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]))
2265 return;
2266 __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]);
2267 if (!build)
2268 nm_i->free_nid_count[nat_ofs]--;
2269 }
2270}
2271
4ac91242 2272/* return if the nid is recognized as free */
5921aaa1
L		 2273static bool add_free_nid(struct f2fs_sb_info *sbi,
2274 nid_t nid, bool build, bool update)
e05df3b1 2275{
6fb03f3a 2276 struct f2fs_nm_info *nm_i = NM_I(sbi);
30a61ddf 2277 struct free_nid *i, *e;
59bbd474 2278 struct nat_entry *ne;
30a61ddf
CY		 2279 int err = -EINVAL;
2280 bool ret = false;
9198aceb
JK		 2281
2282 /* 0 nid should not be used */
cfb271d4 2283 if (unlikely(nid == 0))
4ac91242 2284 return false;
59bbd474 2285
626bcf2b
CY		 2286 if (unlikely(f2fs_check_nid_range(sbi, nid)))
2287 return false;
2288
32410577 2289 i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS, true, NULL);
e05df3b1 2290 i->nid = nid;
9a4ffdf5 2291 i->state = FREE_NID;
e05df3b1 2292
5921aaa1 2293 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
769ec6e5 2294
b8559dc2 2295 spin_lock(&nm_i->nid_list_lock);
30a61ddf
CY		 2296
2297 if (build) {
2298 /*
2299 * Thread A Thread B
2300 * - f2fs_create
2301 * - f2fs_new_inode
4d57b86d 2302 * - f2fs_alloc_nid
9a4ffdf5 2303 * - __insert_nid_to_list(PREALLOC_NID)
30a61ddf 2304 * - f2fs_balance_fs_bg
4d57b86d
CY		 2305 * - f2fs_build_free_nids
2306 * - __f2fs_build_free_nids
30a61ddf
CY		 2307 * - scan_nat_page
2308 * - add_free_nid
2309 * - __lookup_nat_cache
2310 * - f2fs_add_link
4d57b86d
CY		 2311 * - f2fs_init_inode_metadata
2312 * - f2fs_new_inode_page
2313 * - f2fs_new_node_page
30a61ddf 2314 * - set_node_addr
4d57b86d 2315 * - f2fs_alloc_nid_done
9a4ffdf5
CY		 2316 * - __remove_nid_from_list(PREALLOC_NID)
2317 * - __insert_nid_to_list(FREE_NID)
30a61ddf
CY		 2318 */
2319 ne = __lookup_nat_cache(nm_i, nid);
2320 if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) ||
2321 nat_get_blkaddr(ne) != NULL_ADDR))
2322 goto err_out;
2323
2324 e = __lookup_free_nid_list(nm_i, nid);
2325 if (e) {
9a4ffdf5 2326 if (e->state == FREE_NID)
30a61ddf
CY		 2327 ret = true;
2328 goto err_out;
2329 }
2330 }
2331 ret = true;
b815bdc7 2332 err = __insert_free_nid(sbi, i);
30a61ddf 2333err_out:
5921aaa1
L		 2334 if (update) {
2335 update_free_nid_bitmap(sbi, nid, ret, build);
2336 if (!build)
2337 nm_i->available_nids++;
2338 }
eb0aa4b8
JK		 2339 spin_unlock(&nm_i->nid_list_lock);
2340 radix_tree_preload_end();
5921aaa1 2341
30a61ddf 2342 if (err)
e05df3b1 2343 kmem_cache_free(free_nid_slab, i);
30a61ddf 2344 return ret;
e05df3b1
JK		 2345}
2346
b8559dc2 2347static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 2348{
b8559dc2 2349 struct f2fs_nm_info *nm_i = NM_I(sbi);
e05df3b1 2350 struct free_nid *i;
cf0ee0f0
CY		 2351 bool need_free = false;
2352
b8559dc2 2353 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2354 i = __lookup_free_nid_list(nm_i, nid);
9a4ffdf5 2355 if (i && i->state == FREE_NID) {
a0761f63 2356 __remove_free_nid(sbi, i, FREE_NID);
cf0ee0f0 2357 need_free = true;
e05df3b1 2358 }
b8559dc2 2359 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2360
2361 if (need_free)
2362 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2363}
2364
e2374015 2365static int scan_nat_page(struct f2fs_sb_info *sbi,
e05df3b1
JK		 2366 struct page *nat_page, nid_t start_nid)
2367{
6fb03f3a 2368 struct f2fs_nm_info *nm_i = NM_I(sbi);
e05df3b1
JK		 2369 struct f2fs_nat_block *nat_blk = page_address(nat_page);
2370 block_t blk_addr;
4ac91242 2371 unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid);
e05df3b1
JK		 2372 int i;
2373
23380b85 2374 __set_bit_le(nat_ofs, nm_i->nat_block_bitmap);
4ac91242 2375
e05df3b1
JK		 2376 i = start_nid % NAT_ENTRY_PER_BLOCK;
2377
2378 for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {
cfb271d4 2379 if (unlikely(start_nid >= nm_i->max_nid))
04431c44 2380 break;
23d38844
HL		 2381
2382 blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr);
e2374015
CY		 2383
2384 if (blk_addr == NEW_ADDR)
2385 return -EINVAL;
2386
5921aaa1
L		 2387 if (blk_addr == NULL_ADDR) {
2388 add_free_nid(sbi, start_nid, true, true);
2389 } else {
2390 spin_lock(&NM_I(sbi)->nid_list_lock);
2391 update_free_nid_bitmap(sbi, start_nid, false, true);
2392 spin_unlock(&NM_I(sbi)->nid_list_lock);
2393 }
4ac91242 2394 }
e2374015
CY		 2395
2396 return 0;
4ac91242
CY		 2397}
2398
2fbaa25f 2399static void scan_curseg_cache(struct f2fs_sb_info *sbi)
4ac91242 2400{
4ac91242
CY		 2401 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
2402 struct f2fs_journal *journal = curseg->journal;
2fbaa25f
CY		 2403 int i;
2404
2405 down_read(&curseg->journal_rwsem);
2406 for (i = 0; i < nats_in_cursum(journal); i++) {
2407 block_t addr;
2408 nid_t nid;
2409
2410 addr = le32_to_cpu(nat_in_journal(journal, i).block_addr);
2411 nid = le32_to_cpu(nid_in_journal(journal, i));
2412 if (addr == NULL_ADDR)
5921aaa1 2413 add_free_nid(sbi, nid, true, false);
2fbaa25f
CY		 2414 else
2415 remove_free_nid(sbi, nid);
2416 }
2417 up_read(&curseg->journal_rwsem);
2418}
2419
2420static void scan_free_nid_bits(struct f2fs_sb_info *sbi)
2421{
2422 struct f2fs_nm_info *nm_i = NM_I(sbi);
4ac91242 2423 unsigned int i, idx;
97456574 2424 nid_t nid;
4ac91242 2425
e4544b63 2426 f2fs_down_read(&nm_i->nat_tree_lock);
4ac91242
CY		 2427
2428 for (i = 0; i < nm_i->nat_blocks; i++) {
2429 if (!test_bit_le(i, nm_i->nat_block_bitmap))
2430 continue;
586d1492
CY		 2431 if (!nm_i->free_nid_count[i])
2432 continue;
4ac91242 2433 for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) {
97456574
FL		 2434 idx = find_next_bit_le(nm_i->free_nid_bitmap[i],
2435 NAT_ENTRY_PER_BLOCK, idx);
2436 if (idx >= NAT_ENTRY_PER_BLOCK)
2437 break;
4ac91242
CY		 2438
2439 nid = i * NAT_ENTRY_PER_BLOCK + idx;
5921aaa1 2440 add_free_nid(sbi, nid, true, false);
4ac91242 2441
9a4ffdf5 2442 if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS)
4ac91242
CY		 2443 goto out;
2444 }
2445 }
2446out:
2fbaa25f 2447 scan_curseg_cache(sbi);
4ac91242 2448
e4544b63 2449 f2fs_up_read(&nm_i->nat_tree_lock);
e05df3b1
JK		 2450}
2451
e2374015 2452static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi,
4d57b86d 2453 bool sync, bool mount)
e05df3b1 2454{
e05df3b1 2455 struct f2fs_nm_info *nm_i = NM_I(sbi);
e2374015 2456 int i = 0, ret;
55008d84 2457 nid_t nid = nm_i->next_scan_nid;
e05df3b1 2458
e9cdd307
YH		 2459 if (unlikely(nid >= nm_i->max_nid))
2460 nid = 0;
2461
e2cab031
ST		 2462 if (unlikely(nid % NAT_ENTRY_PER_BLOCK))
2463 nid = NAT_BLOCK_OFFSET(nid) * NAT_ENTRY_PER_BLOCK;
2464
55008d84 2465 /* Enough entries */
9a4ffdf5 2466 if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
e2374015 2467 return 0;
e05df3b1 2468
4d57b86d 2469 if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS))
e2374015 2470 return 0;
e05df3b1 2471
4ac91242
CY		 2472 if (!mount) {
2473 /* try to find free nids in free_nid_bitmap */
2474 scan_free_nid_bits(sbi);
2475
74986213 2476 if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK)
e2374015 2477 return 0;
22ad0b6a
JK		 2478 }
2479
55008d84 2480 /* readahead nat pages to be scanned */
4d57b86d 2481 f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES,
26879fb1 2482 META_NAT, true);
e05df3b1 2483
e4544b63 2484 f2fs_down_read(&nm_i->nat_tree_lock);
a5131193 2485
e05df3b1 2486 while (1) {
66e83361
YH		 2487 if (!test_bit_le(NAT_BLOCK_OFFSET(nid),
2488 nm_i->nat_block_bitmap)) {
2489 struct page *page = get_current_nat_page(sbi, nid);
e05df3b1 2490
edc55aaf
JK		 2491 if (IS_ERR(page)) {
2492 ret = PTR_ERR(page);
2493 } else {
2494 ret = scan_nat_page(sbi, page, nid);
2495 f2fs_put_page(page, 1);
2496 }
e2374015
CY		 2497
2498 if (ret) {
e4544b63 2499 f2fs_up_read(&nm_i->nat_tree_lock);
dcbb4c10 2500 f2fs_err(sbi, "NAT is corrupt, run fsck to fix it");
edc55aaf 2501 return ret;
e2374015 2502 }
66e83361 2503 }
e05df3b1
JK		 2504
2505 nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK));
cfb271d4 2506 if (unlikely(nid >= nm_i->max_nid))
e05df3b1 2507 nid = 0;
55008d84 2508
a6d494b6 2509 if (++i >= FREE_NID_PAGES)
e05df3b1
JK		 2510 break;
2511 }
2512
55008d84
JK		 2513 /* go to the next free nat pages to find free nids abundantly */
2514 nm_i->next_scan_nid = nid;
e05df3b1
JK		 2515
2516 /* find free nids from current sum_pages */
2fbaa25f 2517 scan_curseg_cache(sbi);
dfc08a12 2518
e4544b63 2519 f2fs_up_read(&nm_i->nat_tree_lock);
2db2388f 2520
4d57b86d 2521 f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid),
ea1a29a0 2522 nm_i->ra_nid_pages, META_NAT, false);
e2374015
CY		 2523
2524 return 0;
e05df3b1
JK		 2525}
2526
e2374015 2527int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount)
2411cf5b 2528{
e2374015
CY		 2529 int ret;
2530
2411cf5b 2531 mutex_lock(&NM_I(sbi)->build_lock);
e2374015 2532 ret = __f2fs_build_free_nids(sbi, sync, mount);
2411cf5b 2533 mutex_unlock(&NM_I(sbi)->build_lock);
e2374015
CY		 2534
2535 return ret;
2411cf5b
CY		 2536}
2537
e05df3b1
JK		 2538/*
2539 * If this function returns success, caller can obtain a new nid
2540 * from second parameter of this function.
2541 * The returned nid could be used ino as well as nid when inode is created.
2542 */
4d57b86d 2543bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
e05df3b1
JK		 2544{
2545 struct f2fs_nm_info *nm_i = NM_I(sbi);
2546 struct free_nid *i = NULL;
e05df3b1 2547retry:
c40e15a9 2548 if (time_to_inject(sbi, FAULT_ALLOC_NID))
cb78942b 2549 return false;
7fa750a1 2550
b8559dc2 2551 spin_lock(&nm_i->nid_list_lock);
e05df3b1 2552
04d47e67
CY		 2553 if (unlikely(nm_i->available_nids == 0)) {
2554 spin_unlock(&nm_i->nid_list_lock);
2555 return false;
2556 }
e05df3b1 2557
4d57b86d
CY		 2558 /* We should not use stale free nids created by f2fs_build_free_nids */
2559 if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) {
9a4ffdf5
CY		 2560 f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list));
2561 i = list_first_entry(&nm_i->free_nid_list,
b8559dc2 2562 struct free_nid, list);
55008d84 2563 *nid = i->nid;
b8559dc2 2564
a0761f63 2565 __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID);
04d47e67 2566 nm_i->available_nids--;
4ac91242 2567
346fe752 2568 update_free_nid_bitmap(sbi, *nid, false, false);
4ac91242 2569
b8559dc2 2570 spin_unlock(&nm_i->nid_list_lock);
55008d84
JK		 2571 return true;
2572 }
b8559dc2 2573 spin_unlock(&nm_i->nid_list_lock);
55008d84
JK		 2574
2575 /* Let's scan nat pages and its caches to get free nids */
f84262b0
JK		 2576 if (!f2fs_build_free_nids(sbi, true, false))
2577 goto retry;
2578 return false;
e05df3b1
JK		 2579}
2580
0a8165d7 2581/*
4d57b86d 2582 * f2fs_alloc_nid() should be called prior to this function.
e05df3b1 2583 */
4d57b86d 2584void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1
JK		 2585{
2586 struct f2fs_nm_info *nm_i = NM_I(sbi);
2587 struct free_nid *i;
2588
b8559dc2 2589 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2590 i = __lookup_free_nid_list(nm_i, nid);
b8559dc2 2591 f2fs_bug_on(sbi, !i);
a0761f63 2592 __remove_free_nid(sbi, i, PREALLOC_NID);
b8559dc2 2593 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2594
2595 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2596}
2597
0a8165d7 2598/*
4d57b86d 2599 * f2fs_alloc_nid() should be called prior to this function.
e05df3b1 2600 */
4d57b86d 2601void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid)
e05df3b1 2602{
49952fa1
JK		 2603 struct f2fs_nm_info *nm_i = NM_I(sbi);
2604 struct free_nid *i;
cf0ee0f0 2605 bool need_free = false;
49952fa1 2606
65985d93
JK		 2607 if (!nid)
2608 return;
2609
b8559dc2 2610 spin_lock(&nm_i->nid_list_lock);
8a7ed66a 2611 i = __lookup_free_nid_list(nm_i, nid);
b8559dc2
CY		 2612 f2fs_bug_on(sbi, !i);
2613
4d57b86d 2614 if (!f2fs_available_free_memory(sbi, FREE_NIDS)) {
a0761f63 2615 __remove_free_nid(sbi, i, PREALLOC_NID);
cf0ee0f0 2616 need_free = true;
95630cba 2617 } else {
a0761f63 2618 __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID);
95630cba 2619 }
04d47e67
CY		 2620
2621 nm_i->available_nids++;
2622
346fe752 2623 update_free_nid_bitmap(sbi, nid, true, false);
4ac91242 2624
b8559dc2 2625 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0
CY		 2626
2627 if (need_free)
2628 kmem_cache_free(free_nid_slab, i);
e05df3b1
JK		 2629}
2630
4d57b86d 2631int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
31696580
CY		 2632{
2633 struct f2fs_nm_info *nm_i = NM_I(sbi);
31696580
CY		 2634 int nr = nr_shrink;
2635
9a4ffdf5 2636 if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
ad4edb83
JK		 2637 return 0;
2638
31696580
CY		 2639 if (!mutex_trylock(&nm_i->build_lock))
2640 return 0;
2641
042be373
CY		 2642 while (nr_shrink && nm_i->nid_cnt[FREE_NID] > MAX_FREE_NIDS) {
2643 struct free_nid *i, *next;
2644 unsigned int batch = SHRINK_NID_BATCH_SIZE;
b8559dc2 2645
042be373
CY		 2646 spin_lock(&nm_i->nid_list_lock);
2647 list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) {
2648 if (!nr_shrink || !batch ||
2649 nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS)
2650 break;
2651 __remove_free_nid(sbi, i, FREE_NID);
2652 kmem_cache_free(free_nid_slab, i);
2653 nr_shrink--;
2654 batch--;
2655 }
2656 spin_unlock(&nm_i->nid_list_lock);
31696580 2657 }
042be373 2658
31696580
CY		 2659 mutex_unlock(&nm_i->build_lock);
2660
2661 return nr - nr_shrink;
2662}
2663
9627a7b3 2664int f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
28cdce04 2665{
28cdce04
CY		 2666 void *src_addr, *dst_addr;
2667 size_t inline_size;
2668 struct page *ipage;
2669 struct f2fs_inode *ri;
2670
4d57b86d 2671 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
9627a7b3
CY		 2672 if (IS_ERR(ipage))
2673 return PTR_ERR(ipage);
28cdce04 2674
e3b4d43f 2675 ri = F2FS_INODE(page);
1eca05aa 2676 if (ri->i_inline & F2FS_INLINE_XATTR) {
96dd0251
CY		 2677 if (!f2fs_has_inline_xattr(inode)) {
2678 set_inode_flag(inode, FI_INLINE_XATTR);
2679 stat_inc_inline_xattr(inode);
2680 }
1eca05aa 2681 } else {
96dd0251
CY		 2682 if (f2fs_has_inline_xattr(inode)) {
2683 stat_dec_inline_xattr(inode);
2684 clear_inode_flag(inode, FI_INLINE_XATTR);
2685 }
e3b4d43f
JK		 2686 goto update_inode;
2687 }
2688
6afc662e
CY		 2689 dst_addr = inline_xattr_addr(inode, ipage);
2690 src_addr = inline_xattr_addr(inode, page);
28cdce04
CY		 2691 inline_size = inline_xattr_size(inode);
2692
bae0ee7a 2693 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
28cdce04 2694 memcpy(dst_addr, src_addr, inline_size);
e3b4d43f 2695update_inode:
4d57b86d 2696 f2fs_update_inode(inode, ipage);
28cdce04 2697 f2fs_put_page(ipage, 1);
9627a7b3 2698 return 0;
28cdce04
CY		 2699}
2700
4d57b86d 2701int f2fs_recover_xattr_data(struct inode *inode, struct page *page)
abb2366c 2702{
4081363f 2703 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
abb2366c 2704 nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid;
87905682
YH		 2705 nid_t new_xnid;
2706 struct dnode_of_data dn;
abb2366c 2707 struct node_info ni;
d260081c 2708 struct page *xpage;
7735730d 2709 int err;
abb2366c 2710
abb2366c
JK		 2711 if (!prev_xnid)
2712 goto recover_xnid;
2713
d260081c 2714 /* 1: invalidate the previous xattr nid */
a9419b63 2715 err = f2fs_get_node_info(sbi, prev_xnid, &ni, false);
7735730d
CY		 2716 if (err)
2717 return err;
2718
4d57b86d 2719 f2fs_invalidate_blocks(sbi, ni.blk_addr);
000519f2 2720 dec_valid_node_count(sbi, inode, false);
479f40c4 2721 set_node_addr(sbi, &ni, NULL_ADDR, false);
abb2366c
JK		 2722
2723recover_xnid:
d260081c 2724 /* 2: update xattr nid in inode */
4d57b86d 2725 if (!f2fs_alloc_nid(sbi, &new_xnid))
87905682
YH		 2726 return -ENOSPC;
2727
2728 set_new_dnode(&dn, inode, NULL, NULL, new_xnid);
4d57b86d 2729 xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET);
87905682 2730 if (IS_ERR(xpage)) {
4d57b86d 2731 f2fs_alloc_nid_failed(sbi, new_xnid);
87905682
YH		 2732 return PTR_ERR(xpage);
2733 }
2734
4d57b86d
CY		 2735 f2fs_alloc_nid_done(sbi, new_xnid);
2736 f2fs_update_inode_page(inode);
d260081c
CY		 2737
2738 /* 3: update and set xattr node page dirty */
87905682 2739 memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE);
abb2366c 2740
d260081c
CY		 2741 set_page_dirty(xpage);
2742 f2fs_put_page(xpage, 1);
abb2366c 2743
d260081c 2744 return 0;
abb2366c
JK		 2745}
2746
4d57b86d 2747int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
e05df3b1 2748{
58bfaf44 2749 struct f2fs_inode *src, *dst;
e05df3b1
JK		 2750 nid_t ino = ino_of_node(page);
2751 struct node_info old_ni, new_ni;
2752 struct page *ipage;
7735730d 2753 int err;
e05df3b1 2754
a9419b63 2755 err = f2fs_get_node_info(sbi, ino, &old_ni, false);
7735730d
CY		 2756 if (err)
2757 return err;
e8271fa3
JK		 2758
2759 if (unlikely(old_ni.blk_addr != NULL_ADDR))
2760 return -EINVAL;
e8ea9b3d 2761retry:
300e129c 2762 ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false);
e8ea9b3d 2763 if (!ipage) {
4034247a 2764 memalloc_retry_wait(GFP_NOFS);
e8ea9b3d
JK		 2765 goto retry;
2766 }
e05df3b1 2767
e1c42045 2768 /* Should not use this inode from free nid list */
b8559dc2 2769 remove_free_nid(sbi, ino);
e05df3b1 2770
237c0790
JK		 2771 if (!PageUptodate(ipage))
2772 SetPageUptodate(ipage);
e05df3b1 2773 fill_node_footer(ipage, ino, ino, 0, true);
ef2a0071 2774 set_cold_node(ipage, false);
e05df3b1 2775
58bfaf44
JK		 2776 src = F2FS_INODE(page);
2777 dst = F2FS_INODE(ipage);
e05df3b1 2778
36218b81 2779 memcpy(dst, src, offsetof(struct f2fs_inode, i_ext));
58bfaf44
JK		 2780 dst->i_size = 0;
2781 dst->i_blocks = cpu_to_le64(1);
2782 dst->i_links = cpu_to_le32(1);
2783 dst->i_xattr_nid = 0;
7a2af766 2784 dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR);
5c57132e 2785 if (dst->i_inline & F2FS_EXTRA_ATTR) {
7a2af766 2786 dst->i_extra_isize = src->i_extra_isize;
6afc662e 2787
7beb01f7 2788 if (f2fs_sb_has_flexible_inline_xattr(sbi) &&
6afc662e
CY		 2789 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2790 i_inline_xattr_size))
2791 dst->i_inline_xattr_size = src->i_inline_xattr_size;
2792
7beb01f7 2793 if (f2fs_sb_has_project_quota(sbi) &&
5c57132e
CY		 2794 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2795 i_projid))
2796 dst->i_projid = src->i_projid;
5cd1f387 2797
7beb01f7 2798 if (f2fs_sb_has_inode_crtime(sbi) &&
5cd1f387
CY		 2799 F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize),
2800 i_crtime_nsec)) {
2801 dst->i_crtime = src->i_crtime;
2802 dst->i_crtime_nsec = src->i_crtime_nsec;
2803 }
5c57132e 2804 }
e05df3b1
JK		 2805
2806 new_ni = old_ni;
2807 new_ni.ino = ino;
2808
0abd675e 2809 if (unlikely(inc_valid_node_count(sbi, NULL, true)))
65e5cd0a 2810 WARN_ON(1);
479f40c4 2811 set_node_addr(sbi, &new_ni, NEW_ADDR, false);
e05df3b1 2812 inc_valid_inode_count(sbi);
617deb8c 2813 set_page_dirty(ipage);
e05df3b1
JK		 2814 f2fs_put_page(ipage, 1);
2815 return 0;
2816}
2817
7735730d 2818int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
e05df3b1
JK		 2819 unsigned int segno, struct f2fs_summary_block *sum)
2820{
2821 struct f2fs_node *rn;
2822 struct f2fs_summary *sum_entry;
e05df3b1 2823 block_t addr;
9ecf4b80 2824 int i, idx, last_offset, nrpages;
e05df3b1
JK		 2825
2826 /* scan the node segment */
2827 last_offset = sbi->blocks_per_seg;
2828 addr = START_BLOCK(sbi, segno);
2829 sum_entry = &sum->entries[0];
2830
9ecf4b80 2831 for (i = 0; i < last_offset; i += nrpages, addr += nrpages) {
5f7136db 2832 nrpages = bio_max_segs(last_offset - i);
393ff91f 2833
e1c42045 2834 /* readahead node pages */
4d57b86d 2835 f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true);
e05df3b1 2836
9ecf4b80 2837 for (idx = addr; idx < addr + nrpages; idx++) {
4d57b86d 2838 struct page *page = f2fs_get_tmp_page(sbi, idx);
9af0ff1c 2839
7735730d
CY		 2840 if (IS_ERR(page))
2841 return PTR_ERR(page);
2842
9ecf4b80
CY		 2843 rn = F2FS_NODE(page);
2844 sum_entry->nid = rn->footer.nid;
2845 sum_entry->version = 0;
2846 sum_entry->ofs_in_node = 0;
2847 sum_entry++;
2848 f2fs_put_page(page, 1);
9af0ff1c 2849 }
bac4eef6 2850
9ecf4b80 2851 invalidate_mapping_pages(META_MAPPING(sbi), addr,
bac4eef6 2852 addr + nrpages);
e05df3b1 2853 }
7735730d 2854 return 0;
e05df3b1
JK		 2855}
2856
aec71382 2857static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
e05df3b1
JK		 2858{
2859 struct f2fs_nm_info *nm_i = NM_I(sbi);
2860 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 2861 struct f2fs_journal *journal = curseg->journal;
e05df3b1
JK		 2862 int i;
2863
b7ad7512 2864 down_write(&curseg->journal_rwsem);
dfc08a12 2865 for (i = 0; i < nats_in_cursum(journal); i++) {
e05df3b1
JK		 2866 struct nat_entry *ne;
2867 struct f2fs_nat_entry raw_ne;
dfc08a12 2868 nid_t nid = le32_to_cpu(nid_in_journal(journal, i));
e05df3b1 2869
b862676e
CY		 2870 if (f2fs_check_nid_range(sbi, nid))
2871 continue;
2872
dfc08a12 2873 raw_ne = nat_in_journal(journal, i);
9be32d72 2874
e05df3b1 2875 ne = __lookup_nat_cache(nm_i, nid);
e05df3b1 2876 if (!ne) {
32410577 2877 ne = __alloc_nat_entry(sbi, nid, true);
12f9ef37 2878 __init_nat_entry(nm_i, ne, &raw_ne, true);
e05df3b1 2879 }
04d47e67
CY		 2880
2881 /*
2882 * if a free nat in journal has not been used after last
2883 * checkpoint, we should remove it from available nids,
2884 * since later we will add it again.
2885 */
2886 if (!get_nat_flag(ne, IS_DIRTY) &&
2887 le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) {
2888 spin_lock(&nm_i->nid_list_lock);
2889 nm_i->available_nids--;
2890 spin_unlock(&nm_i->nid_list_lock);
2891 }
2892
e05df3b1 2893 __set_nat_cache_dirty(nm_i, ne);
e05df3b1 2894 }
dfc08a12 2895 update_nats_in_cursum(journal, -i);
b7ad7512 2896 up_write(&curseg->journal_rwsem);
e05df3b1
JK		 2897}
2898
309cc2b6
JK		 2899static void __adjust_nat_entry_set(struct nat_entry_set *nes,
2900 struct list_head *head, int max)
e05df3b1 2901{
309cc2b6 2902 struct nat_entry_set *cur;
e05df3b1 2903
309cc2b6
JK		 2904 if (nes->entry_cnt >= max)
2905 goto add_out;
e05df3b1 2906
309cc2b6
JK		 2907 list_for_each_entry(cur, head, set_list) {
2908 if (cur->entry_cnt >= nes->entry_cnt) {
2909 list_add(&nes->set_list, cur->set_list.prev);
2910 return;
2911 }
aec71382 2912 }
309cc2b6
JK		 2913add_out:
2914 list_add_tail(&nes->set_list, head);
2915}
e05df3b1 2916
94c821fb
CY		 2917static void __update_nat_bits(struct f2fs_nm_info *nm_i, unsigned int nat_ofs,
2918 unsigned int valid)
2919{
2920 if (valid == 0) {
2921 __set_bit_le(nat_ofs, nm_i->empty_nat_bits);
2922 __clear_bit_le(nat_ofs, nm_i->full_nat_bits);
2923 return;
2924 }
2925
2926 __clear_bit_le(nat_ofs, nm_i->empty_nat_bits);
2927 if (valid == NAT_ENTRY_PER_BLOCK)
2928 __set_bit_le(nat_ofs, nm_i->full_nat_bits);
2929 else
2930 __clear_bit_le(nat_ofs, nm_i->full_nat_bits);
2931}
2932
2933static void update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid,
22ad0b6a
JK		 2934 struct page *page)
2935{
2936 struct f2fs_nm_info *nm_i = NM_I(sbi);
2937 unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK;
2938 struct f2fs_nat_block *nat_blk = page_address(page);
2939 int valid = 0;
37a0ab2a 2940 int i = 0;
22ad0b6a 2941
94c821fb 2942 if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
22ad0b6a
JK		 2943 return;
2944
37a0ab2a
FL		 2945 if (nat_index == 0) {
2946 valid = 1;
2947 i = 1;
2948 }
2949 for (; i < NAT_ENTRY_PER_BLOCK; i++) {
36af5f40 2950 if (le32_to_cpu(nat_blk->entries[i].block_addr) != NULL_ADDR)
22ad0b6a
JK		 2951 valid++;
2952 }
94c821fb
CY		 2953
2954 __update_nat_bits(nm_i, nat_index, valid);
2955}
2956
2957void f2fs_enable_nat_bits(struct f2fs_sb_info *sbi)
2958{
2959 struct f2fs_nm_info *nm_i = NM_I(sbi);
2960 unsigned int nat_ofs;
2961
e4544b63 2962 f2fs_down_read(&nm_i->nat_tree_lock);
94c821fb
CY		 2963
2964 for (nat_ofs = 0; nat_ofs < nm_i->nat_blocks; nat_ofs++) {
2965 unsigned int valid = 0, nid_ofs = 0;
2966
2967 /* handle nid zero due to it should never be used */
2968 if (unlikely(nat_ofs == 0)) {
2969 valid = 1;
2970 nid_ofs = 1;
2971 }
2972
2973 for (; nid_ofs < NAT_ENTRY_PER_BLOCK; nid_ofs++) {
2974 if (!test_bit_le(nid_ofs,
2975 nm_i->free_nid_bitmap[nat_ofs]))
2976 valid++;
2977 }
2978
2979 __update_nat_bits(nm_i, nat_ofs, valid);
22ad0b6a
JK		 2980 }
2981
e4544b63 2982 f2fs_up_read(&nm_i->nat_tree_lock);
22ad0b6a
JK		 2983}
2984
edc55aaf 2985static int __flush_nat_entry_set(struct f2fs_sb_info *sbi,
22ad0b6a 2986 struct nat_entry_set *set, struct cp_control *cpc)
309cc2b6
JK		 2987{
2988 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 2989 struct f2fs_journal *journal = curseg->journal;
309cc2b6
JK		 2990 nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK;
2991 bool to_journal = true;
2992 struct f2fs_nat_block *nat_blk;
2993 struct nat_entry *ne, *cur;
2994 struct page *page = NULL;
e05df3b1 2995
aec71382
CY		 2996 /*
2997 * there are two steps to flush nat entries:
2998 * #1, flush nat entries to journal in current hot data summary block.
2999 * #2, flush nat entries to nat page.
3000 */
94c821fb 3001 if ((cpc->reason & CP_UMOUNT) ||
22ad0b6a 3002 !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
309cc2b6
JK		 3003 to_journal = false;
3004
3005 if (to_journal) {
b7ad7512 3006 down_write(&curseg->journal_rwsem);
309cc2b6
JK		 3007 } else {
3008 page = get_next_nat_page(sbi, start_nid);
edc55aaf
JK		 3009 if (IS_ERR(page))
3010 return PTR_ERR(page);
3011
309cc2b6
JK		 3012 nat_blk = page_address(page);
3013 f2fs_bug_on(sbi, !nat_blk);
3014 }
aec71382 3015
309cc2b6
JK		 3016 /* flush dirty nats in nat entry set */
3017 list_for_each_entry_safe(ne, cur, &set->entry_list, list) {
3018 struct f2fs_nat_entry *raw_ne;
3019 nid_t nid = nat_get_nid(ne);
3020 int offset;
3021
febeca6d 3022 f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR);
aec71382
CY		 3023
3024 if (to_journal) {
4d57b86d 3025 offset = f2fs_lookup_journal_in_cursum(journal,
309cc2b6
JK		 3026 NAT_JOURNAL, nid, 1);
3027 f2fs_bug_on(sbi, offset < 0);
dfc08a12
CY		 3028 raw_ne = &nat_in_journal(journal, offset);
3029 nid_in_journal(journal, offset) = cpu_to_le32(nid);
aec71382 3030 } else {
309cc2b6 3031 raw_ne = &nat_blk->entries[nid - start_nid];
e05df3b1 3032 }
309cc2b6 3033 raw_nat_from_node_info(raw_ne, &ne->ni);
309cc2b6 3034 nat_reset_flag(ne);
0b28b71e 3035 __clear_nat_cache_dirty(NM_I(sbi), set, ne);
04d47e67 3036 if (nat_get_blkaddr(ne) == NULL_ADDR) {
5921aaa1 3037 add_free_nid(sbi, nid, false, true);
4ac91242
CY		 3038 } else {
3039 spin_lock(&NM_I(sbi)->nid_list_lock);
346fe752 3040 update_free_nid_bitmap(sbi, nid, false, false);
04d47e67
CY		 3041 spin_unlock(&NM_I(sbi)->nid_list_lock);
3042 }
309cc2b6 3043 }
e05df3b1 3044
22ad0b6a 3045 if (to_journal) {
b7ad7512 3046 up_write(&curseg->journal_rwsem);
22ad0b6a 3047 } else {
94c821fb 3048 update_nat_bits(sbi, start_nid, page);
309cc2b6 3049 f2fs_put_page(page, 1);
22ad0b6a 3050 }
aec71382 3051
59c9081b
YH		 3052 /* Allow dirty nats by node block allocation in write_begin */
3053 if (!set->entry_cnt) {
3054 radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set);
3055 kmem_cache_free(nat_entry_set_slab, set);
3056 }
edc55aaf 3057 return 0;
309cc2b6 3058}
aec71382 3059
309cc2b6
JK		 3060/*
3061 * This function is called during the checkpointing process.
3062 */
edc55aaf 3063int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
309cc2b6
JK		 3064{
3065 struct f2fs_nm_info *nm_i = NM_I(sbi);
3066 struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
b7ad7512 3067 struct f2fs_journal *journal = curseg->journal;
7aed0d45 3068 struct nat_entry_set *setvec[SETVEC_SIZE];
309cc2b6
JK		 3069 struct nat_entry_set *set, *tmp;
3070 unsigned int found;
3071 nid_t set_idx = 0;
3072 LIST_HEAD(sets);
edc55aaf 3073 int err = 0;
309cc2b6 3074
a95ba66a
JK		 3075 /*
3076 * during unmount, let's flush nat_bits before checking
3077 * nat_cnt[DIRTY_NAT].
3078 */
94c821fb 3079 if (cpc->reason & CP_UMOUNT) {
e4544b63 3080 f2fs_down_write(&nm_i->nat_tree_lock);
7f2ecdd8 3081 remove_nats_in_journal(sbi);
e4544b63 3082 f2fs_up_write(&nm_i->nat_tree_lock);
7f2ecdd8
JK		 3083 }
3084
a95ba66a 3085 if (!nm_i->nat_cnt[DIRTY_NAT])
edc55aaf 3086 return 0;
a5131193 3087
e4544b63 3088 f2fs_down_write(&nm_i->nat_tree_lock);
a5131193 3089
309cc2b6
JK		 3090 /*
3091 * if there are no enough space in journal to store dirty nat
3092 * entries, remove all entries from journal and merge them
3093 * into nat entry set.
3094 */
94c821fb 3095 if (cpc->reason & CP_UMOUNT ||
a95ba66a
JK		 3096 !__has_cursum_space(journal,
3097 nm_i->nat_cnt[DIRTY_NAT], NAT_JOURNAL))
309cc2b6
JK		 3098 remove_nats_in_journal(sbi);
3099
309cc2b6 3100 while ((found = __gang_lookup_nat_set(nm_i,
7aed0d45 3101 set_idx, SETVEC_SIZE, setvec))) {
309cc2b6 3102 unsigned idx;
5f029c04 3103
309cc2b6
JK		 3104 set_idx = setvec[found - 1]->set + 1;
3105 for (idx = 0; idx < found; idx++)
3106 __adjust_nat_entry_set(setvec[idx], &sets,
dfc08a12 3107 MAX_NAT_JENTRIES(journal));
e05df3b1 3108 }
aec71382 3109
309cc2b6 3110 /* flush dirty nats in nat entry set */
edc55aaf
JK		 3111 list_for_each_entry_safe(set, tmp, &sets, set_list) {
3112 err = __flush_nat_entry_set(sbi, set, cpc);
3113 if (err)
3114 break;
3115 }
309cc2b6 3116
e4544b63 3117 f2fs_up_write(&nm_i->nat_tree_lock);
59c9081b 3118 /* Allow dirty nats by node block allocation in write_begin */
edc55aaf
JK		 3119
3120 return err;
e05df3b1
JK		 3121}
3122
22ad0b6a
JK		 3123static int __get_nat_bitmaps(struct f2fs_sb_info *sbi)
3124{
3125 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
3126 struct f2fs_nm_info *nm_i = NM_I(sbi);
3127 unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE;
3128 unsigned int i;
3129 __u64 cp_ver = cur_cp_version(ckpt);
22ad0b6a
JK		 3130 block_t nat_bits_addr;
3131
df033caf 3132 nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8);
0b6d4ca0 3133 nm_i->nat_bits = f2fs_kvzalloc(sbi,
acbf054d 3134 nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL);
22ad0b6a
JK		 3135 if (!nm_i->nat_bits)
3136 return -ENOMEM;
3137
94c821fb
CY		 3138 nm_i->full_nat_bits = nm_i->nat_bits + 8;
3139 nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes;
3140
3141 if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
3142 return 0;
3143
22ad0b6a
JK		 3144 nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg -
3145 nm_i->nat_bits_blocks;
3146 for (i = 0; i < nm_i->nat_bits_blocks; i++) {
7735730d
CY		 3147 struct page *page;
3148
3149 page = f2fs_get_meta_page(sbi, nat_bits_addr++);
3b30eb19 3150 if (IS_ERR(page))
7735730d 3151 return PTR_ERR(page);
22ad0b6a
JK		 3152
3153 memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS),
3154 page_address(page), F2FS_BLKSIZE);
3155 f2fs_put_page(page, 1);
3156 }
3157
ced2c7ea 3158 cp_ver |= (cur_cp_crc(ckpt) << 32);
22ad0b6a 3159 if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) {
94c821fb
CY		 3160 clear_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
3161 f2fs_notice(sbi, "Disable nat_bits due to incorrect cp_ver (%llu, %llu)",
3162 cp_ver, le64_to_cpu(*(__le64 *)nm_i->nat_bits));
22ad0b6a
JK		 3163 return 0;
3164 }
3165
dcbb4c10 3166 f2fs_notice(sbi, "Found nat_bits in checkpoint");
22ad0b6a
JK		 3167 return 0;
3168}
3169
bd80a4b9 3170static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi)
7041d5d2
CY		 3171{
3172 struct f2fs_nm_info *nm_i = NM_I(sbi);
3173 unsigned int i = 0;
3174 nid_t nid, last_nid;
3175
94c821fb 3176 if (!is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG))
7041d5d2
CY		 3177 return;
3178
3179 for (i = 0; i < nm_i->nat_blocks; i++) {
3180 i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i);
3181 if (i >= nm_i->nat_blocks)
3182 break;
3183
3184 __set_bit_le(i, nm_i->nat_block_bitmap);
3185
3186 nid = i * NAT_ENTRY_PER_BLOCK;
f6986ede 3187 last_nid = nid + NAT_ENTRY_PER_BLOCK;
7041d5d2 3188
346fe752 3189 spin_lock(&NM_I(sbi)->nid_list_lock);
7041d5d2 3190 for (; nid < last_nid; nid++)
346fe752
CY		 3191 update_free_nid_bitmap(sbi, nid, true, true);
3192 spin_unlock(&NM_I(sbi)->nid_list_lock);
7041d5d2
CY		 3193 }
3194
3195 for (i = 0; i < nm_i->nat_blocks; i++) {
3196 i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i);
3197 if (i >= nm_i->nat_blocks)
3198 break;
3199
3200 __set_bit_le(i, nm_i->nat_block_bitmap);
3201 }
3202}
3203
e05df3b1
JK		 3204static int init_node_manager(struct f2fs_sb_info *sbi)
3205{
3206 struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi);
3207 struct f2fs_nm_info *nm_i = NM_I(sbi);
3208 unsigned char *version_bitmap;
22ad0b6a
JK		 3209 unsigned int nat_segs;
3210 int err;
e05df3b1
JK		 3211
3212 nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr);
3213
3214 /* segment_count_nat includes pair segment so divide to 2. */
3215 nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1;
22ad0b6a
JK		 3216 nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg);
3217 nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks;
7ee0eeab 3218
b63da15e 3219 /* not used nids: 0, node, meta, (and root counted as valid node) */
04d47e67 3220 nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count -
27cae0bc 3221 F2FS_RESERVED_NODE_NUM;
9a4ffdf5
CY		 3222 nm_i->nid_cnt[FREE_NID] = 0;
3223 nm_i->nid_cnt[PREALLOC_NID] = 0;
cdfc41c1 3224 nm_i->ram_thresh = DEF_RAM_THRESHOLD;
ea1a29a0 3225 nm_i->ra_nid_pages = DEF_RA_NID_PAGES;
2304cb0c 3226 nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD;
47c8ebcc 3227 nm_i->max_rf_node_blocks = DEF_RF_NODE_BLOCKS;
e05df3b1 3228
8a7ed66a 3229 INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC);
9a4ffdf5 3230 INIT_LIST_HEAD(&nm_i->free_nid_list);
769ec6e5
JK		 3231 INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO);
3232 INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO);
e05df3b1 3233 INIT_LIST_HEAD(&nm_i->nat_entries);
22969158 3234 spin_lock_init(&nm_i->nat_list_lock);
e05df3b1
JK		 3235
3236 mutex_init(&nm_i->build_lock);
b8559dc2 3237 spin_lock_init(&nm_i->nid_list_lock);
e4544b63 3238 init_f2fs_rwsem(&nm_i->nat_tree_lock);
e05df3b1 3239
e05df3b1 3240 nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid);
79b5793b 3241 nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP);
e05df3b1 3242 version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP);
79b5793b
AG		 3243 nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size,
3244 GFP_KERNEL);
3245 if (!nm_i->nat_bitmap)
3246 return -ENOMEM;
599a09b2 3247
22ad0b6a
JK		 3248 err = __get_nat_bitmaps(sbi);
3249 if (err)
3250 return err;
3251
599a09b2
CY		 3252#ifdef CONFIG_F2FS_CHECK_FS
3253 nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size,
3254 GFP_KERNEL);
3255 if (!nm_i->nat_bitmap_mir)
3256 return -ENOMEM;
3257#endif
3258
e05df3b1
JK		 3259 return 0;
3260}
3261
9f7e4a2c 3262static int init_free_nid_cache(struct f2fs_sb_info *sbi)
4ac91242
CY		 3263{
3264 struct f2fs_nm_info *nm_i = NM_I(sbi);
bb1105e4 3265 int i;
4ac91242 3266
026f0507 3267 nm_i->free_nid_bitmap =
0b6d4ca0
EB		 3268 f2fs_kvzalloc(sbi, array_size(sizeof(unsigned char *),
3269 nm_i->nat_blocks),
3270 GFP_KERNEL);
4ac91242
CY		 3271 if (!nm_i->free_nid_bitmap)
3272 return -ENOMEM;
3273
bb1105e4
JK		 3274 for (i = 0; i < nm_i->nat_blocks; i++) {
3275 nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi,
e15d54d5 3276 f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL);
68c43a23 3277 if (!nm_i->free_nid_bitmap[i])
bb1105e4
JK		 3278 return -ENOMEM;
3279 }
3280
628b3d14 3281 nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8,
4ac91242
CY		 3282 GFP_KERNEL);
3283 if (!nm_i->nat_block_bitmap)
3284 return -ENOMEM;
586d1492 3285
9d2a789c
KC		 3286 nm_i->free_nid_count =
3287 f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short),
3288 nm_i->nat_blocks),
3289 GFP_KERNEL);
586d1492
CY		 3290 if (!nm_i->free_nid_count)
3291 return -ENOMEM;
4ac91242
CY		 3292 return 0;
3293}
3294
4d57b86d 3295int f2fs_build_node_manager(struct f2fs_sb_info *sbi)
e05df3b1
JK		 3296{
3297 int err;
3298
acbf054d
CY		 3299 sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info),
3300 GFP_KERNEL);
e05df3b1
JK		 3301 if (!sbi->nm_info)
3302 return -ENOMEM;
3303
3304 err = init_node_manager(sbi);
3305 if (err)
3306 return err;
3307
4ac91242
CY		 3308 err = init_free_nid_cache(sbi);
3309 if (err)
3310 return err;
3311
7041d5d2
CY		 3312 /* load free nid status from nat_bits table */
3313 load_free_nid_bitmap(sbi);
3314
e2374015 3315 return f2fs_build_free_nids(sbi, true, true);
e05df3b1
JK		 3316}
3317
4d57b86d 3318void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi)
e05df3b1
JK		 3319{
3320 struct f2fs_nm_info *nm_i = NM_I(sbi);
3321 struct free_nid *i, *next_i;
3322 struct nat_entry *natvec[NATVEC_SIZE];
7aed0d45 3323 struct nat_entry_set *setvec[SETVEC_SIZE];
e05df3b1
JK		 3324 nid_t nid = 0;
3325 unsigned int found;
3326
3327 if (!nm_i)
3328 return;
3329
3330 /* destroy free nid list */
b8559dc2 3331 spin_lock(&nm_i->nid_list_lock);
9a4ffdf5 3332 list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) {
a0761f63 3333 __remove_free_nid(sbi, i, FREE_NID);
b8559dc2 3334 spin_unlock(&nm_i->nid_list_lock);
cf0ee0f0 3335 kmem_cache_free(free_nid_slab, i);
b8559dc2 3336 spin_lock(&nm_i->nid_list_lock);
e05df3b1 3337 }
9a4ffdf5
CY		 3338 f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]);
3339 f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]);
3340 f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list));
b8559dc2 3341 spin_unlock(&nm_i->nid_list_lock);
e05df3b1
JK		 3342
3343 /* destroy nat cache */
e4544b63 3344 f2fs_down_write(&nm_i->nat_tree_lock);
e05df3b1
JK		 3345 while ((found = __gang_lookup_nat_cache(nm_i,
3346 nid, NATVEC_SIZE, natvec))) {
3347 unsigned idx;
7aed0d45 3348
b6ce391e 3349 nid = nat_get_nid(natvec[found - 1]) + 1;
22969158
CY		 3350 for (idx = 0; idx < found; idx++) {
3351 spin_lock(&nm_i->nat_list_lock);
3352 list_del(&natvec[idx]->list);
3353 spin_unlock(&nm_i->nat_list_lock);
3354
b6ce391e 3355 __del_from_nat_cache(nm_i, natvec[idx]);
22969158 3356 }
e05df3b1 3357 }
a95ba66a 3358 f2fs_bug_on(sbi, nm_i->nat_cnt[TOTAL_NAT]);
7aed0d45
JK		 3359
3360 /* destroy nat set cache */
3361 nid = 0;
3362 while ((found = __gang_lookup_nat_set(nm_i,
3363 nid, SETVEC_SIZE, setvec))) {
3364 unsigned idx;
3365
3366 nid = setvec[found - 1]->set + 1;
3367 for (idx = 0; idx < found; idx++) {
3368 /* entry_cnt is not zero, when cp_error was occurred */
3369 f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list));
3370 radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set);
3371 kmem_cache_free(nat_entry_set_slab, setvec[idx]);
3372 }
3373 }
e4544b63 3374 f2fs_up_write(&nm_i->nat_tree_lock);
e05df3b1 3375
4ac91242 3376 kvfree(nm_i->nat_block_bitmap);
bb1105e4
JK		 3377 if (nm_i->free_nid_bitmap) {
3378 int i;
3379
3380 for (i = 0; i < nm_i->nat_blocks; i++)
3381 kvfree(nm_i->free_nid_bitmap[i]);
5222595d 3382 kvfree(nm_i->free_nid_bitmap);
bb1105e4 3383 }
586d1492 3384 kvfree(nm_i->free_nid_count);
4ac91242 3385
5222595d
JK		 3386 kvfree(nm_i->nat_bitmap);
3387 kvfree(nm_i->nat_bits);
599a09b2 3388#ifdef CONFIG_F2FS_CHECK_FS
5222595d 3389 kvfree(nm_i->nat_bitmap_mir);
599a09b2 3390#endif
e05df3b1 3391 sbi->nm_info = NULL;
c8eb7024 3392 kfree(nm_i);
e05df3b1
JK		 3393}
3394
4d57b86d 3395int __init f2fs_create_node_manager_caches(void)
e05df3b1 3396{
98510003 3397 nat_entry_slab = f2fs_kmem_cache_create("f2fs_nat_entry",
e8512d2e 3398 sizeof(struct nat_entry));
e05df3b1 3399 if (!nat_entry_slab)
aec71382 3400 goto fail;
e05df3b1 3401
98510003 3402 free_nid_slab = f2fs_kmem_cache_create("f2fs_free_nid",
e8512d2e 3403 sizeof(struct free_nid));
aec71382 3404 if (!free_nid_slab)
ce3e6d25 3405 goto destroy_nat_entry;
aec71382 3406
98510003 3407 nat_entry_set_slab = f2fs_kmem_cache_create("f2fs_nat_entry_set",
aec71382
CY		 3408 sizeof(struct nat_entry_set));
3409 if (!nat_entry_set_slab)
ce3e6d25 3410 goto destroy_free_nid;
50fa53ec 3411
98510003 3412 fsync_node_entry_slab = f2fs_kmem_cache_create("f2fs_fsync_node_entry",
50fa53ec
CY		 3413 sizeof(struct fsync_node_entry));
3414 if (!fsync_node_entry_slab)
3415 goto destroy_nat_entry_set;
e05df3b1 3416 return 0;
aec71382 3417
50fa53ec
CY		 3418destroy_nat_entry_set:
3419 kmem_cache_destroy(nat_entry_set_slab);
ce3e6d25 3420destroy_free_nid:
aec71382 3421 kmem_cache_destroy(free_nid_slab);
ce3e6d25 3422destroy_nat_entry:
aec71382
CY		 3423 kmem_cache_destroy(nat_entry_slab);
3424fail:
3425 return -ENOMEM;
e05df3b1
JK		 3426}
3427
4d57b86d 3428void f2fs_destroy_node_manager_caches(void)
e05df3b1 3429{
50fa53ec 3430 kmem_cache_destroy(fsync_node_entry_slab);
aec71382 3431 kmem_cache_destroy(nat_entry_set_slab);
e05df3b1
JK		 3432 kmem_cache_destroy(free_nid_slab);
3433 kmem_cache_destroy(nat_entry_slab);
3434}
Linux 6.x block layer and io_uring tree(s)