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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
e05df3b1 JK |
3 | * fs/f2fs/node.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
e05df3b1 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/mpage.h> | |
11 | #include <linux/backing-dev.h> | |
12 | #include <linux/blkdev.h> | |
13 | #include <linux/pagevec.h> | |
14 | #include <linux/swap.h> | |
15 | ||
16 | #include "f2fs.h" | |
17 | #include "node.h" | |
18 | #include "segment.h" | |
87905682 | 19 | #include "xattr.h" |
9e4ded3f | 20 | #include "trace.h" |
51dd6249 | 21 | #include <trace/events/f2fs.h> |
e05df3b1 | 22 | |
4d57b86d | 23 | #define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock) |
f978f5a0 | 24 | |
e05df3b1 JK |
25 | static struct kmem_cache *nat_entry_slab; |
26 | static struct kmem_cache *free_nid_slab; | |
aec71382 | 27 | static struct kmem_cache *nat_entry_set_slab; |
50fa53ec | 28 | static 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 | 33 | int 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); | |
37 | f2fs_msg(sbi->sb, KERN_WARNING, | |
38 | "%s: out-of-range nid=%x, run fsck to fix.", | |
39 | __func__, nid); | |
40 | return -EINVAL; | |
41 | } | |
42 | return 0; | |
43 | } | |
44 | ||
4d57b86d | 45 | bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type) |
cdfc41c1 | 46 | { |
6fb03f3a | 47 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
cdfc41c1 | 48 | struct sysinfo val; |
e5e7ea3c | 49 | unsigned long avail_ram; |
cdfc41c1 | 50 | unsigned long mem_size = 0; |
6fb03f3a | 51 | bool res = false; |
cdfc41c1 JK |
52 | |
53 | si_meminfo(&val); | |
e5e7ea3c JK |
54 | |
55 | /* only uses low memory */ | |
56 | avail_ram = val.totalram - val.totalhigh; | |
57 | ||
429511cd CY |
58 | /* |
59 | * give 25%, 25%, 50%, 50%, 50% memory for each components respectively | |
60 | */ | |
6fb03f3a | 61 | if (type == FREE_NIDS) { |
9a4ffdf5 | 62 | mem_size = (nm_i->nid_cnt[FREE_NID] * |
b8559dc2 | 63 | sizeof(struct free_nid)) >> PAGE_SHIFT; |
e5e7ea3c | 64 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); |
6fb03f3a | 65 | } else if (type == NAT_ENTRIES) { |
e5e7ea3c | 66 | mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> |
09cbfeaf | 67 | PAGE_SHIFT; |
e5e7ea3c | 68 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); |
e589c2c4 JK |
69 | if (excess_cached_nats(sbi)) |
70 | res = false; | |
a1257023 JK |
71 | } else if (type == DIRTY_DENTS) { |
72 | if (sbi->sb->s_bdi->wb.dirty_exceeded) | |
73 | return false; | |
74 | mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); | |
75 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); | |
e5e7ea3c JK |
76 | } else if (type == INO_ENTRIES) { |
77 | int i; | |
78 | ||
39d787be | 79 | for (i = 0; i < MAX_INO_ENTRY; i++) |
8f73cbb7 KM |
80 | mem_size += sbi->im[i].ino_num * |
81 | sizeof(struct ino_entry); | |
82 | mem_size >>= PAGE_SHIFT; | |
e5e7ea3c | 83 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
429511cd | 84 | } else if (type == EXTENT_CACHE) { |
7441ccef JK |
85 | mem_size = (atomic_read(&sbi->total_ext_tree) * |
86 | sizeof(struct extent_tree) + | |
429511cd | 87 | atomic_read(&sbi->total_ext_node) * |
09cbfeaf | 88 | sizeof(struct extent_node)) >> PAGE_SHIFT; |
429511cd | 89 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
57864ae5 JK |
90 | } else if (type == INMEM_PAGES) { |
91 | /* it allows 20% / total_ram for inmemory pages */ | |
92 | mem_size = get_pages(sbi, F2FS_INMEM_PAGES); | |
93 | res = mem_size < (val.totalram / 5); | |
1e84371f | 94 | } else { |
1663cae4 JK |
95 | if (!sbi->sb->s_bdi->wb.dirty_exceeded) |
96 | return true; | |
6fb03f3a JK |
97 | } |
98 | return res; | |
cdfc41c1 JK |
99 | } |
100 | ||
e05df3b1 JK |
101 | static void clear_node_page_dirty(struct page *page) |
102 | { | |
e05df3b1 | 103 | if (PageDirty(page)) { |
5ec2d99d | 104 | f2fs_clear_page_cache_dirty_tag(page); |
e05df3b1 | 105 | clear_page_dirty_for_io(page); |
aec2f729 | 106 | dec_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); |
e05df3b1 JK |
107 | } |
108 | ClearPageUptodate(page); | |
109 | } | |
110 | ||
111 | static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) | |
112 | { | |
80551d17 | 113 | return f2fs_get_meta_page_nofail(sbi, current_nat_addr(sbi, nid)); |
e05df3b1 JK |
114 | } |
115 | ||
116 | static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) | |
117 | { | |
118 | struct page *src_page; | |
119 | struct page *dst_page; | |
e05df3b1 JK |
120 | pgoff_t dst_off; |
121 | void *src_addr; | |
122 | void *dst_addr; | |
123 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
124 | ||
80551d17 | 125 | dst_off = next_nat_addr(sbi, current_nat_addr(sbi, nid)); |
e05df3b1 JK |
126 | |
127 | /* get current nat block page with lock */ | |
80551d17 | 128 | src_page = get_current_nat_page(sbi, nid); |
edc55aaf JK |
129 | if (IS_ERR(src_page)) |
130 | return src_page; | |
4d57b86d | 131 | dst_page = f2fs_grab_meta_page(sbi, dst_off); |
9850cf4a | 132 | f2fs_bug_on(sbi, PageDirty(src_page)); |
e05df3b1 JK |
133 | |
134 | src_addr = page_address(src_page); | |
135 | dst_addr = page_address(dst_page); | |
09cbfeaf | 136 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
e05df3b1 JK |
137 | set_page_dirty(dst_page); |
138 | f2fs_put_page(src_page, 1); | |
139 | ||
140 | set_to_next_nat(nm_i, nid); | |
141 | ||
142 | return dst_page; | |
143 | } | |
144 | ||
12f9ef37 YH |
145 | static struct nat_entry *__alloc_nat_entry(nid_t nid, bool no_fail) |
146 | { | |
147 | struct nat_entry *new; | |
148 | ||
149 | if (no_fail) | |
2882d343 | 150 | new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); |
12f9ef37 | 151 | else |
2882d343 | 152 | new = kmem_cache_alloc(nat_entry_slab, GFP_F2FS_ZERO); |
12f9ef37 YH |
153 | if (new) { |
154 | nat_set_nid(new, nid); | |
155 | nat_reset_flag(new); | |
156 | } | |
157 | return new; | |
158 | } | |
159 | ||
160 | static void __free_nat_entry(struct nat_entry *e) | |
161 | { | |
162 | kmem_cache_free(nat_entry_slab, e); | |
163 | } | |
164 | ||
165 | /* must be locked by nat_tree_lock */ | |
166 | static struct nat_entry *__init_nat_entry(struct f2fs_nm_info *nm_i, | |
167 | struct nat_entry *ne, struct f2fs_nat_entry *raw_ne, bool no_fail) | |
168 | { | |
169 | if (no_fail) | |
170 | f2fs_radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne); | |
171 | else if (radix_tree_insert(&nm_i->nat_root, nat_get_nid(ne), ne)) | |
172 | return NULL; | |
173 | ||
174 | if (raw_ne) | |
175 | node_info_from_raw_nat(&ne->ni, raw_ne); | |
22969158 CY |
176 | |
177 | spin_lock(&nm_i->nat_list_lock); | |
12f9ef37 | 178 | list_add_tail(&ne->list, &nm_i->nat_entries); |
22969158 CY |
179 | spin_unlock(&nm_i->nat_list_lock); |
180 | ||
12f9ef37 YH |
181 | nm_i->nat_cnt++; |
182 | return ne; | |
183 | } | |
184 | ||
e05df3b1 JK |
185 | static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) |
186 | { | |
22969158 CY |
187 | struct nat_entry *ne; |
188 | ||
189 | ne = radix_tree_lookup(&nm_i->nat_root, n); | |
190 | ||
191 | /* for recent accessed nat entry, move it to tail of lru list */ | |
192 | if (ne && !get_nat_flag(ne, IS_DIRTY)) { | |
193 | spin_lock(&nm_i->nat_list_lock); | |
194 | if (!list_empty(&ne->list)) | |
195 | list_move_tail(&ne->list, &nm_i->nat_entries); | |
196 | spin_unlock(&nm_i->nat_list_lock); | |
197 | } | |
198 | ||
199 | return ne; | |
e05df3b1 JK |
200 | } |
201 | ||
202 | static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, | |
203 | nid_t start, unsigned int nr, struct nat_entry **ep) | |
204 | { | |
205 | return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); | |
206 | } | |
207 | ||
208 | static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) | |
209 | { | |
e05df3b1 JK |
210 | radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); |
211 | nm_i->nat_cnt--; | |
12f9ef37 | 212 | __free_nat_entry(e); |
e05df3b1 JK |
213 | } |
214 | ||
780de47c CY |
215 | static struct nat_entry_set *__grab_nat_entry_set(struct f2fs_nm_info *nm_i, |
216 | struct nat_entry *ne) | |
309cc2b6 JK |
217 | { |
218 | nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); | |
219 | struct nat_entry_set *head; | |
220 | ||
309cc2b6 JK |
221 | head = radix_tree_lookup(&nm_i->nat_set_root, set); |
222 | if (!head) { | |
80c54505 | 223 | head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); |
309cc2b6 JK |
224 | |
225 | INIT_LIST_HEAD(&head->entry_list); | |
226 | INIT_LIST_HEAD(&head->set_list); | |
227 | head->set = set; | |
228 | head->entry_cnt = 0; | |
9be32d72 | 229 | f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); |
309cc2b6 | 230 | } |
780de47c CY |
231 | return head; |
232 | } | |
233 | ||
234 | static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, | |
235 | struct nat_entry *ne) | |
236 | { | |
237 | struct nat_entry_set *head; | |
238 | bool new_ne = nat_get_blkaddr(ne) == NEW_ADDR; | |
239 | ||
240 | if (!new_ne) | |
241 | head = __grab_nat_entry_set(nm_i, ne); | |
242 | ||
243 | /* | |
244 | * update entry_cnt in below condition: | |
245 | * 1. update NEW_ADDR to valid block address; | |
246 | * 2. update old block address to new one; | |
247 | */ | |
248 | if (!new_ne && (get_nat_flag(ne, IS_PREALLOC) || | |
249 | !get_nat_flag(ne, IS_DIRTY))) | |
250 | head->entry_cnt++; | |
251 | ||
252 | set_nat_flag(ne, IS_PREALLOC, new_ne); | |
febeca6d CY |
253 | |
254 | if (get_nat_flag(ne, IS_DIRTY)) | |
255 | goto refresh_list; | |
256 | ||
309cc2b6 | 257 | nm_i->dirty_nat_cnt++; |
309cc2b6 | 258 | set_nat_flag(ne, IS_DIRTY, true); |
febeca6d | 259 | refresh_list: |
22969158 | 260 | spin_lock(&nm_i->nat_list_lock); |
780de47c | 261 | if (new_ne) |
febeca6d CY |
262 | list_del_init(&ne->list); |
263 | else | |
264 | list_move_tail(&ne->list, &head->entry_list); | |
22969158 | 265 | spin_unlock(&nm_i->nat_list_lock); |
309cc2b6 JK |
266 | } |
267 | ||
268 | static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, | |
0b28b71e | 269 | struct nat_entry_set *set, struct nat_entry *ne) |
309cc2b6 | 270 | { |
22969158 | 271 | spin_lock(&nm_i->nat_list_lock); |
0b28b71e | 272 | list_move_tail(&ne->list, &nm_i->nat_entries); |
22969158 CY |
273 | spin_unlock(&nm_i->nat_list_lock); |
274 | ||
0b28b71e KM |
275 | set_nat_flag(ne, IS_DIRTY, false); |
276 | set->entry_cnt--; | |
277 | nm_i->dirty_nat_cnt--; | |
309cc2b6 JK |
278 | } |
279 | ||
280 | static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, | |
281 | nid_t start, unsigned int nr, struct nat_entry_set **ep) | |
282 | { | |
283 | return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, | |
284 | start, nr); | |
285 | } | |
286 | ||
50fa53ec CY |
287 | bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page) |
288 | { | |
289 | return NODE_MAPPING(sbi) == page->mapping && | |
290 | IS_DNODE(page) && is_cold_node(page); | |
291 | } | |
292 | ||
293 | void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi) | |
294 | { | |
295 | spin_lock_init(&sbi->fsync_node_lock); | |
296 | INIT_LIST_HEAD(&sbi->fsync_node_list); | |
297 | sbi->fsync_seg_id = 0; | |
298 | sbi->fsync_node_num = 0; | |
299 | } | |
300 | ||
301 | static unsigned int f2fs_add_fsync_node_entry(struct f2fs_sb_info *sbi, | |
302 | struct page *page) | |
303 | { | |
304 | struct fsync_node_entry *fn; | |
305 | unsigned long flags; | |
306 | unsigned int seq_id; | |
307 | ||
308 | fn = f2fs_kmem_cache_alloc(fsync_node_entry_slab, GFP_NOFS); | |
309 | ||
310 | get_page(page); | |
311 | fn->page = page; | |
312 | INIT_LIST_HEAD(&fn->list); | |
313 | ||
314 | spin_lock_irqsave(&sbi->fsync_node_lock, flags); | |
315 | list_add_tail(&fn->list, &sbi->fsync_node_list); | |
316 | fn->seq_id = sbi->fsync_seg_id++; | |
317 | seq_id = fn->seq_id; | |
318 | sbi->fsync_node_num++; | |
319 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
320 | ||
321 | return seq_id; | |
322 | } | |
323 | ||
324 | void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page) | |
325 | { | |
326 | struct fsync_node_entry *fn; | |
327 | unsigned long flags; | |
328 | ||
329 | spin_lock_irqsave(&sbi->fsync_node_lock, flags); | |
330 | list_for_each_entry(fn, &sbi->fsync_node_list, list) { | |
331 | if (fn->page == page) { | |
332 | list_del(&fn->list); | |
333 | sbi->fsync_node_num--; | |
334 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
335 | kmem_cache_free(fsync_node_entry_slab, fn); | |
336 | put_page(page); | |
337 | return; | |
338 | } | |
339 | } | |
340 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
341 | f2fs_bug_on(sbi, 1); | |
342 | } | |
343 | ||
344 | void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi) | |
345 | { | |
346 | unsigned long flags; | |
347 | ||
348 | spin_lock_irqsave(&sbi->fsync_node_lock, flags); | |
349 | sbi->fsync_seg_id = 0; | |
350 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
351 | } | |
352 | ||
4d57b86d | 353 | int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 JK |
354 | { |
355 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
356 | struct nat_entry *e; | |
2dcf51ab | 357 | bool need = false; |
e05df3b1 | 358 | |
b873b798 | 359 | down_read(&nm_i->nat_tree_lock); |
e05df3b1 | 360 | e = __lookup_nat_cache(nm_i, nid); |
2dcf51ab JK |
361 | if (e) { |
362 | if (!get_nat_flag(e, IS_CHECKPOINTED) && | |
363 | !get_nat_flag(e, HAS_FSYNCED_INODE)) | |
364 | need = true; | |
365 | } | |
b873b798 | 366 | up_read(&nm_i->nat_tree_lock); |
2dcf51ab | 367 | return need; |
e05df3b1 JK |
368 | } |
369 | ||
4d57b86d | 370 | bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) |
479f40c4 JK |
371 | { |
372 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
373 | struct nat_entry *e; | |
2dcf51ab | 374 | bool is_cp = true; |
479f40c4 | 375 | |
b873b798 | 376 | down_read(&nm_i->nat_tree_lock); |
2dcf51ab JK |
377 | e = __lookup_nat_cache(nm_i, nid); |
378 | if (e && !get_nat_flag(e, IS_CHECKPOINTED)) | |
379 | is_cp = false; | |
b873b798 | 380 | up_read(&nm_i->nat_tree_lock); |
2dcf51ab | 381 | return is_cp; |
479f40c4 JK |
382 | } |
383 | ||
4d57b86d | 384 | bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) |
b6fe5873 JK |
385 | { |
386 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
387 | struct nat_entry *e; | |
88bd02c9 | 388 | bool need_update = true; |
b6fe5873 | 389 | |
b873b798 | 390 | down_read(&nm_i->nat_tree_lock); |
88bd02c9 JK |
391 | e = __lookup_nat_cache(nm_i, ino); |
392 | if (e && get_nat_flag(e, HAS_LAST_FSYNC) && | |
393 | (get_nat_flag(e, IS_CHECKPOINTED) || | |
394 | get_nat_flag(e, HAS_FSYNCED_INODE))) | |
395 | need_update = false; | |
b873b798 | 396 | up_read(&nm_i->nat_tree_lock); |
88bd02c9 | 397 | return need_update; |
b6fe5873 JK |
398 | } |
399 | ||
12f9ef37 | 400 | /* must be locked by nat_tree_lock */ |
1515aef0 | 401 | static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, |
e05df3b1 JK |
402 | struct f2fs_nat_entry *ne) |
403 | { | |
1515aef0 | 404 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
12f9ef37 | 405 | struct nat_entry *new, *e; |
9be32d72 | 406 | |
12f9ef37 YH |
407 | new = __alloc_nat_entry(nid, false); |
408 | if (!new) | |
409 | return; | |
410 | ||
411 | down_write(&nm_i->nat_tree_lock); | |
e05df3b1 | 412 | e = __lookup_nat_cache(nm_i, nid); |
12f9ef37 YH |
413 | if (!e) |
414 | e = __init_nat_entry(nm_i, new, ne, false); | |
415 | else | |
0c0b471e EB |
416 | f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || |
417 | nat_get_blkaddr(e) != | |
418 | le32_to_cpu(ne->block_addr) || | |
1515aef0 | 419 | nat_get_version(e) != ne->version); |
12f9ef37 YH |
420 | up_write(&nm_i->nat_tree_lock); |
421 | if (e != new) | |
422 | __free_nat_entry(new); | |
e05df3b1 JK |
423 | } |
424 | ||
425 | static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, | |
479f40c4 | 426 | block_t new_blkaddr, bool fsync_done) |
e05df3b1 JK |
427 | { |
428 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
429 | struct nat_entry *e; | |
12f9ef37 | 430 | struct nat_entry *new = __alloc_nat_entry(ni->nid, true); |
9be32d72 | 431 | |
b873b798 | 432 | down_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
433 | e = __lookup_nat_cache(nm_i, ni->nid); |
434 | if (!e) { | |
12f9ef37 | 435 | e = __init_nat_entry(nm_i, new, NULL, true); |
5c27f4ee | 436 | copy_node_info(&e->ni, ni); |
9850cf4a | 437 | f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); |
e05df3b1 JK |
438 | } else if (new_blkaddr == NEW_ADDR) { |
439 | /* | |
440 | * when nid is reallocated, | |
441 | * previous nat entry can be remained in nat cache. | |
442 | * So, reinitialize it with new information. | |
443 | */ | |
5c27f4ee | 444 | copy_node_info(&e->ni, ni); |
9850cf4a | 445 | f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); |
e05df3b1 | 446 | } |
12f9ef37 YH |
447 | /* let's free early to reduce memory consumption */ |
448 | if (e != new) | |
449 | __free_nat_entry(new); | |
e05df3b1 | 450 | |
e05df3b1 | 451 | /* sanity check */ |
9850cf4a JK |
452 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); |
453 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && | |
e05df3b1 | 454 | new_blkaddr == NULL_ADDR); |
9850cf4a | 455 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && |
e05df3b1 | 456 | new_blkaddr == NEW_ADDR); |
e1da7872 | 457 | f2fs_bug_on(sbi, is_valid_data_blkaddr(sbi, nat_get_blkaddr(e)) && |
e05df3b1 JK |
458 | new_blkaddr == NEW_ADDR); |
459 | ||
e1c42045 | 460 | /* increment version no as node is removed */ |
e05df3b1 JK |
461 | if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { |
462 | unsigned char version = nat_get_version(e); | |
463 | nat_set_version(e, inc_node_version(version)); | |
464 | } | |
465 | ||
466 | /* change address */ | |
467 | nat_set_blkaddr(e, new_blkaddr); | |
e1da7872 | 468 | if (!is_valid_data_blkaddr(sbi, new_blkaddr)) |
88bd02c9 | 469 | set_nat_flag(e, IS_CHECKPOINTED, false); |
e05df3b1 | 470 | __set_nat_cache_dirty(nm_i, e); |
479f40c4 JK |
471 | |
472 | /* update fsync_mark if its inode nat entry is still alive */ | |
d5b692b7 CY |
473 | if (ni->nid != ni->ino) |
474 | e = __lookup_nat_cache(nm_i, ni->ino); | |
88bd02c9 JK |
475 | if (e) { |
476 | if (fsync_done && ni->nid == ni->ino) | |
477 | set_nat_flag(e, HAS_FSYNCED_INODE, true); | |
478 | set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); | |
479 | } | |
b873b798 | 480 | up_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
481 | } |
482 | ||
4d57b86d | 483 | int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) |
e05df3b1 JK |
484 | { |
485 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
1b38dc8e | 486 | int nr = nr_shrink; |
e05df3b1 | 487 | |
b873b798 JK |
488 | if (!down_write_trylock(&nm_i->nat_tree_lock)) |
489 | return 0; | |
e05df3b1 | 490 | |
22969158 CY |
491 | spin_lock(&nm_i->nat_list_lock); |
492 | while (nr_shrink) { | |
e05df3b1 | 493 | struct nat_entry *ne; |
22969158 CY |
494 | |
495 | if (list_empty(&nm_i->nat_entries)) | |
496 | break; | |
497 | ||
e05df3b1 JK |
498 | ne = list_first_entry(&nm_i->nat_entries, |
499 | struct nat_entry, list); | |
22969158 CY |
500 | list_del(&ne->list); |
501 | spin_unlock(&nm_i->nat_list_lock); | |
502 | ||
e05df3b1 JK |
503 | __del_from_nat_cache(nm_i, ne); |
504 | nr_shrink--; | |
22969158 CY |
505 | |
506 | spin_lock(&nm_i->nat_list_lock); | |
e05df3b1 | 507 | } |
22969158 CY |
508 | spin_unlock(&nm_i->nat_list_lock); |
509 | ||
b873b798 | 510 | up_write(&nm_i->nat_tree_lock); |
1b38dc8e | 511 | return nr - nr_shrink; |
e05df3b1 JK |
512 | } |
513 | ||
0a8165d7 | 514 | /* |
e1c42045 | 515 | * This function always returns success |
e05df3b1 | 516 | */ |
7735730d | 517 | int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid, |
4d57b86d | 518 | struct node_info *ni) |
e05df3b1 JK |
519 | { |
520 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
521 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 522 | struct f2fs_journal *journal = curseg->journal; |
e05df3b1 JK |
523 | nid_t start_nid = START_NID(nid); |
524 | struct f2fs_nat_block *nat_blk; | |
525 | struct page *page = NULL; | |
526 | struct f2fs_nat_entry ne; | |
527 | struct nat_entry *e; | |
66a82d1f | 528 | pgoff_t index; |
e05df3b1 JK |
529 | int i; |
530 | ||
531 | ni->nid = nid; | |
532 | ||
533 | /* Check nat cache */ | |
b873b798 | 534 | down_read(&nm_i->nat_tree_lock); |
e05df3b1 JK |
535 | e = __lookup_nat_cache(nm_i, nid); |
536 | if (e) { | |
537 | ni->ino = nat_get_ino(e); | |
538 | ni->blk_addr = nat_get_blkaddr(e); | |
539 | ni->version = nat_get_version(e); | |
b873b798 | 540 | up_read(&nm_i->nat_tree_lock); |
7735730d | 541 | return 0; |
1515aef0 | 542 | } |
e05df3b1 | 543 | |
3547ea96 JK |
544 | memset(&ne, 0, sizeof(struct f2fs_nat_entry)); |
545 | ||
e05df3b1 | 546 | /* Check current segment summary */ |
b7ad7512 | 547 | down_read(&curseg->journal_rwsem); |
4d57b86d | 548 | i = f2fs_lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); |
e05df3b1 | 549 | if (i >= 0) { |
dfc08a12 | 550 | ne = nat_in_journal(journal, i); |
e05df3b1 JK |
551 | node_info_from_raw_nat(ni, &ne); |
552 | } | |
b7ad7512 | 553 | up_read(&curseg->journal_rwsem); |
66a82d1f YH |
554 | if (i >= 0) { |
555 | up_read(&nm_i->nat_tree_lock); | |
e05df3b1 | 556 | goto cache; |
66a82d1f | 557 | } |
e05df3b1 JK |
558 | |
559 | /* Fill node_info from nat page */ | |
66a82d1f YH |
560 | index = current_nat_addr(sbi, nid); |
561 | up_read(&nm_i->nat_tree_lock); | |
562 | ||
4d57b86d | 563 | page = f2fs_get_meta_page(sbi, index); |
7735730d CY |
564 | if (IS_ERR(page)) |
565 | return PTR_ERR(page); | |
566 | ||
e05df3b1 JK |
567 | nat_blk = (struct f2fs_nat_block *)page_address(page); |
568 | ne = nat_blk->entries[nid - start_nid]; | |
569 | node_info_from_raw_nat(ni, &ne); | |
570 | f2fs_put_page(page, 1); | |
571 | cache: | |
572 | /* cache nat entry */ | |
1515aef0 | 573 | cache_nat_entry(sbi, nid, &ne); |
7735730d | 574 | return 0; |
e05df3b1 JK |
575 | } |
576 | ||
79344efb JK |
577 | /* |
578 | * readahead MAX_RA_NODE number of node pages. | |
579 | */ | |
4d57b86d | 580 | static void f2fs_ra_node_pages(struct page *parent, int start, int n) |
79344efb JK |
581 | { |
582 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); | |
583 | struct blk_plug plug; | |
584 | int i, end; | |
585 | nid_t nid; | |
586 | ||
587 | blk_start_plug(&plug); | |
588 | ||
589 | /* Then, try readahead for siblings of the desired node */ | |
590 | end = start + n; | |
591 | end = min(end, NIDS_PER_BLOCK); | |
592 | for (i = start; i < end; i++) { | |
593 | nid = get_nid(parent, i, false); | |
4d57b86d | 594 | f2fs_ra_node_page(sbi, nid); |
79344efb JK |
595 | } |
596 | ||
597 | blk_finish_plug(&plug); | |
598 | } | |
599 | ||
4d57b86d | 600 | pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) |
3cf45747 CY |
601 | { |
602 | const long direct_index = ADDRS_PER_INODE(dn->inode); | |
603 | const long direct_blks = ADDRS_PER_BLOCK; | |
604 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; | |
605 | unsigned int skipped_unit = ADDRS_PER_BLOCK; | |
606 | int cur_level = dn->cur_level; | |
607 | int max_level = dn->max_level; | |
608 | pgoff_t base = 0; | |
609 | ||
610 | if (!dn->max_level) | |
611 | return pgofs + 1; | |
612 | ||
613 | while (max_level-- > cur_level) | |
614 | skipped_unit *= NIDS_PER_BLOCK; | |
615 | ||
616 | switch (dn->max_level) { | |
617 | case 3: | |
618 | base += 2 * indirect_blks; | |
619 | case 2: | |
620 | base += 2 * direct_blks; | |
621 | case 1: | |
622 | base += direct_index; | |
623 | break; | |
624 | default: | |
625 | f2fs_bug_on(F2FS_I_SB(dn->inode), 1); | |
626 | } | |
627 | ||
628 | return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; | |
629 | } | |
630 | ||
0a8165d7 | 631 | /* |
e05df3b1 JK |
632 | * The maximum depth is four. |
633 | * Offset[0] will have raw inode offset. | |
634 | */ | |
81ca7350 | 635 | static int get_node_path(struct inode *inode, long block, |
de93653f | 636 | int offset[4], unsigned int noffset[4]) |
e05df3b1 | 637 | { |
81ca7350 | 638 | const long direct_index = ADDRS_PER_INODE(inode); |
e05df3b1 JK |
639 | const long direct_blks = ADDRS_PER_BLOCK; |
640 | const long dptrs_per_blk = NIDS_PER_BLOCK; | |
641 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; | |
642 | const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; | |
643 | int n = 0; | |
644 | int level = 0; | |
645 | ||
646 | noffset[0] = 0; | |
647 | ||
648 | if (block < direct_index) { | |
25c0a6e5 | 649 | offset[n] = block; |
e05df3b1 JK |
650 | goto got; |
651 | } | |
652 | block -= direct_index; | |
653 | if (block < direct_blks) { | |
654 | offset[n++] = NODE_DIR1_BLOCK; | |
655 | noffset[n] = 1; | |
25c0a6e5 | 656 | offset[n] = block; |
e05df3b1 JK |
657 | level = 1; |
658 | goto got; | |
659 | } | |
660 | block -= direct_blks; | |
661 | if (block < direct_blks) { | |
662 | offset[n++] = NODE_DIR2_BLOCK; | |
663 | noffset[n] = 2; | |
25c0a6e5 | 664 | offset[n] = block; |
e05df3b1 JK |
665 | level = 1; |
666 | goto got; | |
667 | } | |
668 | block -= direct_blks; | |
669 | if (block < indirect_blks) { | |
670 | offset[n++] = NODE_IND1_BLOCK; | |
671 | noffset[n] = 3; | |
672 | offset[n++] = block / direct_blks; | |
673 | noffset[n] = 4 + offset[n - 1]; | |
25c0a6e5 | 674 | offset[n] = block % direct_blks; |
e05df3b1 JK |
675 | level = 2; |
676 | goto got; | |
677 | } | |
678 | block -= indirect_blks; | |
679 | if (block < indirect_blks) { | |
680 | offset[n++] = NODE_IND2_BLOCK; | |
681 | noffset[n] = 4 + dptrs_per_blk; | |
682 | offset[n++] = block / direct_blks; | |
683 | noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; | |
25c0a6e5 | 684 | offset[n] = block % direct_blks; |
e05df3b1 JK |
685 | level = 2; |
686 | goto got; | |
687 | } | |
688 | block -= indirect_blks; | |
689 | if (block < dindirect_blks) { | |
690 | offset[n++] = NODE_DIND_BLOCK; | |
691 | noffset[n] = 5 + (dptrs_per_blk * 2); | |
692 | offset[n++] = block / indirect_blks; | |
693 | noffset[n] = 6 + (dptrs_per_blk * 2) + | |
694 | offset[n - 1] * (dptrs_per_blk + 1); | |
695 | offset[n++] = (block / direct_blks) % dptrs_per_blk; | |
696 | noffset[n] = 7 + (dptrs_per_blk * 2) + | |
697 | offset[n - 2] * (dptrs_per_blk + 1) + | |
698 | offset[n - 1]; | |
25c0a6e5 | 699 | offset[n] = block % direct_blks; |
e05df3b1 JK |
700 | level = 3; |
701 | goto got; | |
702 | } else { | |
adb6dc19 | 703 | return -E2BIG; |
e05df3b1 JK |
704 | } |
705 | got: | |
706 | return level; | |
707 | } | |
708 | ||
709 | /* | |
710 | * Caller should call f2fs_put_dnode(dn). | |
4f4124d0 CY |
711 | * Also, it should grab and release a rwsem by calling f2fs_lock_op() and |
712 | * f2fs_unlock_op() only if ro is not set RDONLY_NODE. | |
39936837 | 713 | * In the case of RDONLY_NODE, we don't need to care about mutex. |
e05df3b1 | 714 | */ |
4d57b86d | 715 | int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) |
e05df3b1 | 716 | { |
4081363f | 717 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
e05df3b1 | 718 | struct page *npage[4]; |
f1a3b98e | 719 | struct page *parent = NULL; |
e05df3b1 JK |
720 | int offset[4]; |
721 | unsigned int noffset[4]; | |
722 | nid_t nids[4]; | |
3cf45747 | 723 | int level, i = 0; |
e05df3b1 JK |
724 | int err = 0; |
725 | ||
81ca7350 | 726 | level = get_node_path(dn->inode, index, offset, noffset); |
adb6dc19 JK |
727 | if (level < 0) |
728 | return level; | |
e05df3b1 JK |
729 | |
730 | nids[0] = dn->inode->i_ino; | |
1646cfac | 731 | npage[0] = dn->inode_page; |
e05df3b1 | 732 | |
1646cfac | 733 | if (!npage[0]) { |
4d57b86d | 734 | npage[0] = f2fs_get_node_page(sbi, nids[0]); |
1646cfac JK |
735 | if (IS_ERR(npage[0])) |
736 | return PTR_ERR(npage[0]); | |
737 | } | |
f1a3b98e JK |
738 | |
739 | /* if inline_data is set, should not report any block indices */ | |
740 | if (f2fs_has_inline_data(dn->inode) && index) { | |
76629165 | 741 | err = -ENOENT; |
f1a3b98e JK |
742 | f2fs_put_page(npage[0], 1); |
743 | goto release_out; | |
744 | } | |
745 | ||
e05df3b1 | 746 | parent = npage[0]; |
52c2db3f CL |
747 | if (level != 0) |
748 | nids[1] = get_nid(parent, offset[0], true); | |
e05df3b1 JK |
749 | dn->inode_page = npage[0]; |
750 | dn->inode_page_locked = true; | |
751 | ||
752 | /* get indirect or direct nodes */ | |
753 | for (i = 1; i <= level; i++) { | |
754 | bool done = false; | |
755 | ||
266e97a8 | 756 | if (!nids[i] && mode == ALLOC_NODE) { |
e05df3b1 | 757 | /* alloc new node */ |
4d57b86d | 758 | if (!f2fs_alloc_nid(sbi, &(nids[i]))) { |
e05df3b1 JK |
759 | err = -ENOSPC; |
760 | goto release_pages; | |
761 | } | |
762 | ||
763 | dn->nid = nids[i]; | |
4d57b86d | 764 | npage[i] = f2fs_new_node_page(dn, noffset[i]); |
e05df3b1 | 765 | if (IS_ERR(npage[i])) { |
4d57b86d | 766 | f2fs_alloc_nid_failed(sbi, nids[i]); |
e05df3b1 JK |
767 | err = PTR_ERR(npage[i]); |
768 | goto release_pages; | |
769 | } | |
770 | ||
771 | set_nid(parent, offset[i - 1], nids[i], i == 1); | |
4d57b86d | 772 | f2fs_alloc_nid_done(sbi, nids[i]); |
e05df3b1 | 773 | done = true; |
266e97a8 | 774 | } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { |
4d57b86d | 775 | npage[i] = f2fs_get_node_page_ra(parent, offset[i - 1]); |
e05df3b1 JK |
776 | if (IS_ERR(npage[i])) { |
777 | err = PTR_ERR(npage[i]); | |
778 | goto release_pages; | |
779 | } | |
780 | done = true; | |
781 | } | |
782 | if (i == 1) { | |
783 | dn->inode_page_locked = false; | |
784 | unlock_page(parent); | |
785 | } else { | |
786 | f2fs_put_page(parent, 1); | |
787 | } | |
788 | ||
789 | if (!done) { | |
4d57b86d | 790 | npage[i] = f2fs_get_node_page(sbi, nids[i]); |
e05df3b1 JK |
791 | if (IS_ERR(npage[i])) { |
792 | err = PTR_ERR(npage[i]); | |
793 | f2fs_put_page(npage[0], 0); | |
794 | goto release_out; | |
795 | } | |
796 | } | |
797 | if (i < level) { | |
798 | parent = npage[i]; | |
799 | nids[i + 1] = get_nid(parent, offset[i], false); | |
800 | } | |
801 | } | |
802 | dn->nid = nids[level]; | |
803 | dn->ofs_in_node = offset[level]; | |
804 | dn->node_page = npage[level]; | |
7a2af766 CY |
805 | dn->data_blkaddr = datablock_addr(dn->inode, |
806 | dn->node_page, dn->ofs_in_node); | |
e05df3b1 JK |
807 | return 0; |
808 | ||
809 | release_pages: | |
810 | f2fs_put_page(parent, 1); | |
811 | if (i > 1) | |
812 | f2fs_put_page(npage[0], 0); | |
813 | release_out: | |
814 | dn->inode_page = NULL; | |
815 | dn->node_page = NULL; | |
3cf45747 CY |
816 | if (err == -ENOENT) { |
817 | dn->cur_level = i; | |
818 | dn->max_level = level; | |
0a2aa8fb | 819 | dn->ofs_in_node = offset[level]; |
3cf45747 | 820 | } |
e05df3b1 JK |
821 | return err; |
822 | } | |
823 | ||
7735730d | 824 | static int truncate_node(struct dnode_of_data *dn) |
e05df3b1 | 825 | { |
4081363f | 826 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
e05df3b1 | 827 | struct node_info ni; |
7735730d | 828 | int err; |
0ea295dd | 829 | pgoff_t index; |
e05df3b1 | 830 | |
7735730d CY |
831 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
832 | if (err) | |
833 | return err; | |
e05df3b1 | 834 | |
e05df3b1 | 835 | /* Deallocate node address */ |
4d57b86d | 836 | f2fs_invalidate_blocks(sbi, ni.blk_addr); |
000519f2 | 837 | dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino); |
479f40c4 | 838 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
e05df3b1 JK |
839 | |
840 | if (dn->nid == dn->inode->i_ino) { | |
4d57b86d | 841 | f2fs_remove_orphan_inode(sbi, dn->nid); |
e05df3b1 | 842 | dec_valid_inode_count(sbi); |
0f18b462 | 843 | f2fs_inode_synced(dn->inode); |
e05df3b1 | 844 | } |
000519f2 | 845 | |
e05df3b1 | 846 | clear_node_page_dirty(dn->node_page); |
caf0047e | 847 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
e05df3b1 | 848 | |
0ea295dd | 849 | index = dn->node_page->index; |
e05df3b1 | 850 | f2fs_put_page(dn->node_page, 1); |
bf39c00a JK |
851 | |
852 | invalidate_mapping_pages(NODE_MAPPING(sbi), | |
0ea295dd | 853 | index, index); |
bf39c00a | 854 | |
e05df3b1 | 855 | dn->node_page = NULL; |
51dd6249 | 856 | trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); |
7735730d CY |
857 | |
858 | return 0; | |
e05df3b1 JK |
859 | } |
860 | ||
861 | static int truncate_dnode(struct dnode_of_data *dn) | |
862 | { | |
e05df3b1 | 863 | struct page *page; |
7735730d | 864 | int err; |
e05df3b1 JK |
865 | |
866 | if (dn->nid == 0) | |
867 | return 1; | |
868 | ||
869 | /* get direct node */ | |
4d57b86d | 870 | page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
e05df3b1 JK |
871 | if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) |
872 | return 1; | |
873 | else if (IS_ERR(page)) | |
874 | return PTR_ERR(page); | |
875 | ||
876 | /* Make dnode_of_data for parameter */ | |
877 | dn->node_page = page; | |
878 | dn->ofs_in_node = 0; | |
4d57b86d | 879 | f2fs_truncate_data_blocks(dn); |
7735730d CY |
880 | err = truncate_node(dn); |
881 | if (err) | |
882 | return err; | |
883 | ||
e05df3b1 JK |
884 | return 1; |
885 | } | |
886 | ||
887 | static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, | |
888 | int ofs, int depth) | |
889 | { | |
e05df3b1 JK |
890 | struct dnode_of_data rdn = *dn; |
891 | struct page *page; | |
892 | struct f2fs_node *rn; | |
893 | nid_t child_nid; | |
894 | unsigned int child_nofs; | |
895 | int freed = 0; | |
896 | int i, ret; | |
897 | ||
898 | if (dn->nid == 0) | |
899 | return NIDS_PER_BLOCK + 1; | |
900 | ||
51dd6249 NJ |
901 | trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); |
902 | ||
4d57b86d | 903 | page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
51dd6249 NJ |
904 | if (IS_ERR(page)) { |
905 | trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); | |
e05df3b1 | 906 | return PTR_ERR(page); |
51dd6249 | 907 | } |
e05df3b1 | 908 | |
4d57b86d | 909 | f2fs_ra_node_pages(page, ofs, NIDS_PER_BLOCK); |
79344efb | 910 | |
45590710 | 911 | rn = F2FS_NODE(page); |
e05df3b1 JK |
912 | if (depth < 3) { |
913 | for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { | |
914 | child_nid = le32_to_cpu(rn->in.nid[i]); | |
915 | if (child_nid == 0) | |
916 | continue; | |
917 | rdn.nid = child_nid; | |
918 | ret = truncate_dnode(&rdn); | |
919 | if (ret < 0) | |
920 | goto out_err; | |
12719ae1 JK |
921 | if (set_nid(page, i, 0, false)) |
922 | dn->node_changed = true; | |
e05df3b1 JK |
923 | } |
924 | } else { | |
925 | child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; | |
926 | for (i = ofs; i < NIDS_PER_BLOCK; i++) { | |
927 | child_nid = le32_to_cpu(rn->in.nid[i]); | |
928 | if (child_nid == 0) { | |
929 | child_nofs += NIDS_PER_BLOCK + 1; | |
930 | continue; | |
931 | } | |
932 | rdn.nid = child_nid; | |
933 | ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); | |
934 | if (ret == (NIDS_PER_BLOCK + 1)) { | |
12719ae1 JK |
935 | if (set_nid(page, i, 0, false)) |
936 | dn->node_changed = true; | |
e05df3b1 JK |
937 | child_nofs += ret; |
938 | } else if (ret < 0 && ret != -ENOENT) { | |
939 | goto out_err; | |
940 | } | |
941 | } | |
942 | freed = child_nofs; | |
943 | } | |
944 | ||
945 | if (!ofs) { | |
946 | /* remove current indirect node */ | |
947 | dn->node_page = page; | |
7735730d CY |
948 | ret = truncate_node(dn); |
949 | if (ret) | |
950 | goto out_err; | |
e05df3b1 JK |
951 | freed++; |
952 | } else { | |
953 | f2fs_put_page(page, 1); | |
954 | } | |
51dd6249 | 955 | trace_f2fs_truncate_nodes_exit(dn->inode, freed); |
e05df3b1 JK |
956 | return freed; |
957 | ||
958 | out_err: | |
959 | f2fs_put_page(page, 1); | |
51dd6249 | 960 | trace_f2fs_truncate_nodes_exit(dn->inode, ret); |
e05df3b1 JK |
961 | return ret; |
962 | } | |
963 | ||
964 | static int truncate_partial_nodes(struct dnode_of_data *dn, | |
965 | struct f2fs_inode *ri, int *offset, int depth) | |
966 | { | |
e05df3b1 JK |
967 | struct page *pages[2]; |
968 | nid_t nid[3]; | |
969 | nid_t child_nid; | |
970 | int err = 0; | |
971 | int i; | |
972 | int idx = depth - 2; | |
973 | ||
974 | nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); | |
975 | if (!nid[0]) | |
976 | return 0; | |
977 | ||
978 | /* get indirect nodes in the path */ | |
a225dca3 | 979 | for (i = 0; i < idx + 1; i++) { |
e1c42045 | 980 | /* reference count'll be increased */ |
4d57b86d | 981 | pages[i] = f2fs_get_node_page(F2FS_I_SB(dn->inode), nid[i]); |
e05df3b1 | 982 | if (IS_ERR(pages[i])) { |
e05df3b1 | 983 | err = PTR_ERR(pages[i]); |
a225dca3 | 984 | idx = i - 1; |
e05df3b1 JK |
985 | goto fail; |
986 | } | |
987 | nid[i + 1] = get_nid(pages[i], offset[i + 1], false); | |
988 | } | |
989 | ||
4d57b86d | 990 | f2fs_ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); |
79344efb | 991 | |
e05df3b1 | 992 | /* free direct nodes linked to a partial indirect node */ |
a225dca3 | 993 | for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { |
e05df3b1 JK |
994 | child_nid = get_nid(pages[idx], i, false); |
995 | if (!child_nid) | |
996 | continue; | |
997 | dn->nid = child_nid; | |
998 | err = truncate_dnode(dn); | |
999 | if (err < 0) | |
1000 | goto fail; | |
12719ae1 JK |
1001 | if (set_nid(pages[idx], i, 0, false)) |
1002 | dn->node_changed = true; | |
e05df3b1 JK |
1003 | } |
1004 | ||
a225dca3 | 1005 | if (offset[idx + 1] == 0) { |
e05df3b1 JK |
1006 | dn->node_page = pages[idx]; |
1007 | dn->nid = nid[idx]; | |
7735730d CY |
1008 | err = truncate_node(dn); |
1009 | if (err) | |
1010 | goto fail; | |
e05df3b1 JK |
1011 | } else { |
1012 | f2fs_put_page(pages[idx], 1); | |
1013 | } | |
1014 | offset[idx]++; | |
a225dca3 | 1015 | offset[idx + 1] = 0; |
1016 | idx--; | |
e05df3b1 | 1017 | fail: |
a225dca3 | 1018 | for (i = idx; i >= 0; i--) |
e05df3b1 | 1019 | f2fs_put_page(pages[i], 1); |
51dd6249 NJ |
1020 | |
1021 | trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); | |
1022 | ||
e05df3b1 JK |
1023 | return err; |
1024 | } | |
1025 | ||
0a8165d7 | 1026 | /* |
e05df3b1 JK |
1027 | * All the block addresses of data and nodes should be nullified. |
1028 | */ | |
4d57b86d | 1029 | int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from) |
e05df3b1 | 1030 | { |
4081363f | 1031 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e05df3b1 JK |
1032 | int err = 0, cont = 1; |
1033 | int level, offset[4], noffset[4]; | |
7dd690c8 | 1034 | unsigned int nofs = 0; |
58bfaf44 | 1035 | struct f2fs_inode *ri; |
e05df3b1 JK |
1036 | struct dnode_of_data dn; |
1037 | struct page *page; | |
1038 | ||
51dd6249 NJ |
1039 | trace_f2fs_truncate_inode_blocks_enter(inode, from); |
1040 | ||
81ca7350 | 1041 | level = get_node_path(inode, from, offset, noffset); |
adb6dc19 JK |
1042 | if (level < 0) |
1043 | return level; | |
ff373558 | 1044 | |
4d57b86d | 1045 | page = f2fs_get_node_page(sbi, inode->i_ino); |
51dd6249 NJ |
1046 | if (IS_ERR(page)) { |
1047 | trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); | |
e05df3b1 | 1048 | return PTR_ERR(page); |
51dd6249 | 1049 | } |
e05df3b1 JK |
1050 | |
1051 | set_new_dnode(&dn, inode, page, NULL, 0); | |
1052 | unlock_page(page); | |
1053 | ||
58bfaf44 | 1054 | ri = F2FS_INODE(page); |
e05df3b1 JK |
1055 | switch (level) { |
1056 | case 0: | |
1057 | case 1: | |
1058 | nofs = noffset[1]; | |
1059 | break; | |
1060 | case 2: | |
1061 | nofs = noffset[1]; | |
1062 | if (!offset[level - 1]) | |
1063 | goto skip_partial; | |
58bfaf44 | 1064 | err = truncate_partial_nodes(&dn, ri, offset, level); |
e05df3b1 JK |
1065 | if (err < 0 && err != -ENOENT) |
1066 | goto fail; | |
1067 | nofs += 1 + NIDS_PER_BLOCK; | |
1068 | break; | |
1069 | case 3: | |
1070 | nofs = 5 + 2 * NIDS_PER_BLOCK; | |
1071 | if (!offset[level - 1]) | |
1072 | goto skip_partial; | |
58bfaf44 | 1073 | err = truncate_partial_nodes(&dn, ri, offset, level); |
e05df3b1 JK |
1074 | if (err < 0 && err != -ENOENT) |
1075 | goto fail; | |
1076 | break; | |
1077 | default: | |
1078 | BUG(); | |
1079 | } | |
1080 | ||
1081 | skip_partial: | |
1082 | while (cont) { | |
58bfaf44 | 1083 | dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); |
e05df3b1 JK |
1084 | switch (offset[0]) { |
1085 | case NODE_DIR1_BLOCK: | |
1086 | case NODE_DIR2_BLOCK: | |
1087 | err = truncate_dnode(&dn); | |
1088 | break; | |
1089 | ||
1090 | case NODE_IND1_BLOCK: | |
1091 | case NODE_IND2_BLOCK: | |
1092 | err = truncate_nodes(&dn, nofs, offset[1], 2); | |
1093 | break; | |
1094 | ||
1095 | case NODE_DIND_BLOCK: | |
1096 | err = truncate_nodes(&dn, nofs, offset[1], 3); | |
1097 | cont = 0; | |
1098 | break; | |
1099 | ||
1100 | default: | |
1101 | BUG(); | |
1102 | } | |
1103 | if (err < 0 && err != -ENOENT) | |
1104 | goto fail; | |
1105 | if (offset[1] == 0 && | |
58bfaf44 | 1106 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { |
e05df3b1 | 1107 | lock_page(page); |
ff373558 | 1108 | BUG_ON(page->mapping != NODE_MAPPING(sbi)); |
fec1d657 | 1109 | f2fs_wait_on_page_writeback(page, NODE, true); |
58bfaf44 | 1110 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; |
e05df3b1 JK |
1111 | set_page_dirty(page); |
1112 | unlock_page(page); | |
1113 | } | |
1114 | offset[1] = 0; | |
1115 | offset[0]++; | |
1116 | nofs += err; | |
1117 | } | |
1118 | fail: | |
1119 | f2fs_put_page(page, 0); | |
51dd6249 | 1120 | trace_f2fs_truncate_inode_blocks_exit(inode, err); |
e05df3b1 JK |
1121 | return err > 0 ? 0 : err; |
1122 | } | |
1123 | ||
9c77f754 | 1124 | /* caller must lock inode page */ |
4d57b86d | 1125 | int f2fs_truncate_xattr_node(struct inode *inode) |
4f16fb0f | 1126 | { |
4081363f | 1127 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
4f16fb0f JK |
1128 | nid_t nid = F2FS_I(inode)->i_xattr_nid; |
1129 | struct dnode_of_data dn; | |
1130 | struct page *npage; | |
7735730d | 1131 | int err; |
4f16fb0f JK |
1132 | |
1133 | if (!nid) | |
1134 | return 0; | |
1135 | ||
4d57b86d | 1136 | npage = f2fs_get_node_page(sbi, nid); |
4f16fb0f JK |
1137 | if (IS_ERR(npage)) |
1138 | return PTR_ERR(npage); | |
1139 | ||
7735730d CY |
1140 | set_new_dnode(&dn, inode, NULL, npage, nid); |
1141 | err = truncate_node(&dn); | |
1142 | if (err) { | |
1143 | f2fs_put_page(npage, 1); | |
1144 | return err; | |
1145 | } | |
1146 | ||
205b9822 | 1147 | f2fs_i_xnid_write(inode, 0); |
65985d93 | 1148 | |
4f16fb0f JK |
1149 | return 0; |
1150 | } | |
1151 | ||
39936837 | 1152 | /* |
4f4124d0 CY |
1153 | * Caller should grab and release a rwsem by calling f2fs_lock_op() and |
1154 | * f2fs_unlock_op(). | |
39936837 | 1155 | */ |
4d57b86d | 1156 | int f2fs_remove_inode_page(struct inode *inode) |
e05df3b1 | 1157 | { |
e05df3b1 | 1158 | struct dnode_of_data dn; |
13ec7297 | 1159 | int err; |
e05df3b1 | 1160 | |
c2e69583 | 1161 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); |
4d57b86d | 1162 | err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
13ec7297 CY |
1163 | if (err) |
1164 | return err; | |
e05df3b1 | 1165 | |
4d57b86d | 1166 | err = f2fs_truncate_xattr_node(inode); |
13ec7297 | 1167 | if (err) { |
c2e69583 | 1168 | f2fs_put_dnode(&dn); |
13ec7297 | 1169 | return err; |
e05df3b1 | 1170 | } |
c2e69583 JK |
1171 | |
1172 | /* remove potential inline_data blocks */ | |
1173 | if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
1174 | S_ISLNK(inode->i_mode)) | |
4d57b86d | 1175 | f2fs_truncate_data_blocks_range(&dn, 1); |
c2e69583 | 1176 | |
e1c42045 | 1177 | /* 0 is possible, after f2fs_new_inode() has failed */ |
8d714f8a JK |
1178 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) { |
1179 | f2fs_put_dnode(&dn); | |
1180 | return -EIO; | |
1181 | } | |
9850cf4a | 1182 | f2fs_bug_on(F2FS_I_SB(inode), |
0eb0adad | 1183 | inode->i_blocks != 0 && inode->i_blocks != 8); |
c2e69583 JK |
1184 | |
1185 | /* will put inode & node pages */ | |
7735730d CY |
1186 | err = truncate_node(&dn); |
1187 | if (err) { | |
1188 | f2fs_put_dnode(&dn); | |
1189 | return err; | |
1190 | } | |
13ec7297 | 1191 | return 0; |
e05df3b1 JK |
1192 | } |
1193 | ||
4d57b86d | 1194 | struct page *f2fs_new_inode_page(struct inode *inode) |
e05df3b1 | 1195 | { |
e05df3b1 JK |
1196 | struct dnode_of_data dn; |
1197 | ||
1198 | /* allocate inode page for new inode */ | |
1199 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); | |
44a83ff6 JK |
1200 | |
1201 | /* caller should f2fs_put_page(page, 1); */ | |
4d57b86d | 1202 | return f2fs_new_node_page(&dn, 0); |
e05df3b1 JK |
1203 | } |
1204 | ||
4d57b86d | 1205 | struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs) |
e05df3b1 | 1206 | { |
4081363f | 1207 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
25cc5d3b | 1208 | struct node_info new_ni; |
e05df3b1 JK |
1209 | struct page *page; |
1210 | int err; | |
1211 | ||
91942321 | 1212 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
e05df3b1 JK |
1213 | return ERR_PTR(-EPERM); |
1214 | ||
300e129c | 1215 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); |
e05df3b1 JK |
1216 | if (!page) |
1217 | return ERR_PTR(-ENOMEM); | |
1218 | ||
0abd675e | 1219 | if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs)))) |
9c02740c | 1220 | goto fail; |
0abd675e | 1221 | |
25cc5d3b | 1222 | #ifdef CONFIG_F2FS_CHECK_FS |
7735730d CY |
1223 | err = f2fs_get_node_info(sbi, dn->nid, &new_ni); |
1224 | if (err) { | |
1225 | dec_valid_node_count(sbi, dn->inode, !ofs); | |
1226 | goto fail; | |
1227 | } | |
25cc5d3b JK |
1228 | f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); |
1229 | #endif | |
1230 | new_ni.nid = dn->nid; | |
e05df3b1 | 1231 | new_ni.ino = dn->inode->i_ino; |
25cc5d3b JK |
1232 | new_ni.blk_addr = NULL_ADDR; |
1233 | new_ni.flag = 0; | |
1234 | new_ni.version = 0; | |
479f40c4 | 1235 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
9c02740c | 1236 | |
fec1d657 | 1237 | f2fs_wait_on_page_writeback(page, NODE, true); |
9c02740c | 1238 | fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); |
c5667575 | 1239 | set_cold_node(page, S_ISDIR(dn->inode->i_mode)); |
237c0790 JK |
1240 | if (!PageUptodate(page)) |
1241 | SetPageUptodate(page); | |
12719ae1 JK |
1242 | if (set_page_dirty(page)) |
1243 | dn->node_changed = true; | |
e05df3b1 | 1244 | |
4bc8e9bc | 1245 | if (f2fs_has_xattr_block(ofs)) |
205b9822 | 1246 | f2fs_i_xnid_write(dn->inode, dn->nid); |
479bd73a | 1247 | |
e05df3b1 JK |
1248 | if (ofs == 0) |
1249 | inc_valid_inode_count(sbi); | |
e05df3b1 JK |
1250 | return page; |
1251 | ||
1252 | fail: | |
71e9fec5 | 1253 | clear_node_page_dirty(page); |
e05df3b1 JK |
1254 | f2fs_put_page(page, 1); |
1255 | return ERR_PTR(err); | |
1256 | } | |
1257 | ||
56ae674c JK |
1258 | /* |
1259 | * Caller should do after getting the following values. | |
1260 | * 0: f2fs_put_page(page, 0) | |
86531d6b | 1261 | * LOCKED_PAGE or error: f2fs_put_page(page, 1) |
56ae674c | 1262 | */ |
04d328de | 1263 | static int read_node_page(struct page *page, int op_flags) |
e05df3b1 | 1264 | { |
4081363f | 1265 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
e05df3b1 | 1266 | struct node_info ni; |
cf04e8eb | 1267 | struct f2fs_io_info fio = { |
05ca3632 | 1268 | .sbi = sbi, |
cf04e8eb | 1269 | .type = NODE, |
04d328de MC |
1270 | .op = REQ_OP_READ, |
1271 | .op_flags = op_flags, | |
05ca3632 | 1272 | .page = page, |
4375a336 | 1273 | .encrypted_page = NULL, |
cf04e8eb | 1274 | }; |
7735730d | 1275 | int err; |
e05df3b1 | 1276 | |
54c55c4e WG |
1277 | if (PageUptodate(page)) { |
1278 | #ifdef CONFIG_F2FS_CHECK_FS | |
1279 | f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page)); | |
1280 | #endif | |
3bdad3c7 | 1281 | return LOCKED_PAGE; |
54c55c4e | 1282 | } |
3bdad3c7 | 1283 | |
7735730d CY |
1284 | err = f2fs_get_node_info(sbi, page->index, &ni); |
1285 | if (err) | |
1286 | return err; | |
e05df3b1 | 1287 | |
83a3bfdb JK |
1288 | if (unlikely(ni.blk_addr == NULL_ADDR) || |
1289 | is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) { | |
2bca1e23 | 1290 | ClearPageUptodate(page); |
e05df3b1 | 1291 | return -ENOENT; |
393ff91f JK |
1292 | } |
1293 | ||
7a9d7548 | 1294 | fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; |
05ca3632 | 1295 | return f2fs_submit_page_bio(&fio); |
e05df3b1 JK |
1296 | } |
1297 | ||
0a8165d7 | 1298 | /* |
e05df3b1 JK |
1299 | * Readahead a node page |
1300 | */ | |
4d57b86d | 1301 | void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 | 1302 | { |
e05df3b1 | 1303 | struct page *apage; |
56ae674c | 1304 | int err; |
e05df3b1 | 1305 | |
e8458725 CY |
1306 | if (!nid) |
1307 | return; | |
4d57b86d | 1308 | if (f2fs_check_nid_range(sbi, nid)) |
a4f843bd | 1309 | return; |
e8458725 | 1310 | |
5ec2d99d | 1311 | apage = xa_load(&NODE_MAPPING(sbi)->i_pages, nid); |
999270de | 1312 | if (apage) |
393ff91f | 1313 | return; |
e05df3b1 | 1314 | |
300e129c | 1315 | apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
e05df3b1 JK |
1316 | if (!apage) |
1317 | return; | |
1318 | ||
70246286 | 1319 | err = read_node_page(apage, REQ_RAHEAD); |
86531d6b | 1320 | f2fs_put_page(apage, err ? 1 : 0); |
e05df3b1 JK |
1321 | } |
1322 | ||
17a0ee55 | 1323 | static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, |
0e022ea8 | 1324 | struct page *parent, int start) |
e05df3b1 | 1325 | { |
e05df3b1 | 1326 | struct page *page; |
0e022ea8 | 1327 | int err; |
e05df3b1 | 1328 | |
e05df3b1 JK |
1329 | if (!nid) |
1330 | return ERR_PTR(-ENOENT); | |
4d57b86d | 1331 | if (f2fs_check_nid_range(sbi, nid)) |
a4f843bd | 1332 | return ERR_PTR(-EINVAL); |
afcb7ca0 | 1333 | repeat: |
300e129c | 1334 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
e05df3b1 JK |
1335 | if (!page) |
1336 | return ERR_PTR(-ENOMEM); | |
1337 | ||
70fd7614 | 1338 | err = read_node_page(page, 0); |
86531d6b JK |
1339 | if (err < 0) { |
1340 | f2fs_put_page(page, 1); | |
e05df3b1 | 1341 | return ERR_PTR(err); |
86531d6b | 1342 | } else if (err == LOCKED_PAGE) { |
1f258ec1 | 1343 | err = 0; |
56ae674c | 1344 | goto page_hit; |
86531d6b | 1345 | } |
e05df3b1 | 1346 | |
0e022ea8 | 1347 | if (parent) |
4d57b86d | 1348 | f2fs_ra_node_pages(parent, start + 1, MAX_RA_NODE); |
c718379b | 1349 | |
e05df3b1 | 1350 | lock_page(page); |
0e022ea8 | 1351 | |
4ef51a8f | 1352 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
afcb7ca0 JK |
1353 | f2fs_put_page(page, 1); |
1354 | goto repeat; | |
1355 | } | |
1563ac75 | 1356 | |
1f258ec1 CY |
1357 | if (unlikely(!PageUptodate(page))) { |
1358 | err = -EIO; | |
1563ac75 | 1359 | goto out_err; |
1f258ec1 | 1360 | } |
704956ec CY |
1361 | |
1362 | if (!f2fs_inode_chksum_verify(sbi, page)) { | |
1363 | err = -EBADMSG; | |
1364 | goto out_err; | |
1365 | } | |
e0f56cb4 | 1366 | page_hit: |
0c9df7fb | 1367 | if(unlikely(nid != nid_of_node(page))) { |
1f258ec1 CY |
1368 | f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, " |
1369 | "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]", | |
1370 | nid, nid_of_node(page), ino_of_node(page), | |
1371 | ofs_of_node(page), cpver_of_node(page), | |
1372 | next_blkaddr_of_node(page)); | |
1f258ec1 | 1373 | err = -EINVAL; |
0c9df7fb | 1374 | out_err: |
ee605234 | 1375 | ClearPageUptodate(page); |
0c9df7fb | 1376 | f2fs_put_page(page, 1); |
1f258ec1 | 1377 | return ERR_PTR(err); |
0c9df7fb | 1378 | } |
e05df3b1 JK |
1379 | return page; |
1380 | } | |
1381 | ||
4d57b86d | 1382 | struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) |
0e022ea8 CY |
1383 | { |
1384 | return __get_node_page(sbi, nid, NULL, 0); | |
1385 | } | |
1386 | ||
4d57b86d | 1387 | struct page *f2fs_get_node_page_ra(struct page *parent, int start) |
0e022ea8 CY |
1388 | { |
1389 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); | |
1390 | nid_t nid = get_nid(parent, start, false); | |
1391 | ||
1392 | return __get_node_page(sbi, nid, parent, start); | |
1393 | } | |
1394 | ||
2049d4fc JK |
1395 | static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) |
1396 | { | |
1397 | struct inode *inode; | |
1398 | struct page *page; | |
0f3311a8 | 1399 | int ret; |
2049d4fc JK |
1400 | |
1401 | /* should flush inline_data before evict_inode */ | |
1402 | inode = ilookup(sbi->sb, ino); | |
1403 | if (!inode) | |
1404 | return; | |
1405 | ||
01eccef7 CY |
1406 | page = f2fs_pagecache_get_page(inode->i_mapping, 0, |
1407 | FGP_LOCK|FGP_NOWAIT, 0); | |
2049d4fc JK |
1408 | if (!page) |
1409 | goto iput_out; | |
1410 | ||
1411 | if (!PageUptodate(page)) | |
1412 | goto page_out; | |
1413 | ||
1414 | if (!PageDirty(page)) | |
1415 | goto page_out; | |
1416 | ||
1417 | if (!clear_page_dirty_for_io(page)) | |
1418 | goto page_out; | |
1419 | ||
0f3311a8 CY |
1420 | ret = f2fs_write_inline_data(inode, page); |
1421 | inode_dec_dirty_pages(inode); | |
4d57b86d | 1422 | f2fs_remove_dirty_inode(inode); |
0f3311a8 | 1423 | if (ret) |
2049d4fc JK |
1424 | set_page_dirty(page); |
1425 | page_out: | |
4a6de50d | 1426 | f2fs_put_page(page, 1); |
2049d4fc JK |
1427 | iput_out: |
1428 | iput(inode); | |
1429 | } | |
1430 | ||
608514de JK |
1431 | static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) |
1432 | { | |
028a63a6 | 1433 | pgoff_t index; |
608514de JK |
1434 | struct pagevec pvec; |
1435 | struct page *last_page = NULL; | |
028a63a6 | 1436 | int nr_pages; |
608514de | 1437 | |
86679820 | 1438 | pagevec_init(&pvec); |
608514de | 1439 | index = 0; |
028a63a6 JK |
1440 | |
1441 | while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, | |
67fd707f | 1442 | PAGECACHE_TAG_DIRTY))) { |
028a63a6 | 1443 | int i; |
608514de JK |
1444 | |
1445 | for (i = 0; i < nr_pages; i++) { | |
1446 | struct page *page = pvec.pages[i]; | |
1447 | ||
1448 | if (unlikely(f2fs_cp_error(sbi))) { | |
1449 | f2fs_put_page(last_page, 0); | |
1450 | pagevec_release(&pvec); | |
1451 | return ERR_PTR(-EIO); | |
1452 | } | |
1453 | ||
1454 | if (!IS_DNODE(page) || !is_cold_node(page)) | |
1455 | continue; | |
1456 | if (ino_of_node(page) != ino) | |
1457 | continue; | |
1458 | ||
1459 | lock_page(page); | |
1460 | ||
1461 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { | |
1462 | continue_unlock: | |
1463 | unlock_page(page); | |
1464 | continue; | |
1465 | } | |
1466 | if (ino_of_node(page) != ino) | |
1467 | goto continue_unlock; | |
1468 | ||
1469 | if (!PageDirty(page)) { | |
1470 | /* someone wrote it for us */ | |
1471 | goto continue_unlock; | |
1472 | } | |
1473 | ||
1474 | if (last_page) | |
1475 | f2fs_put_page(last_page, 0); | |
1476 | ||
1477 | get_page(page); | |
1478 | last_page = page; | |
1479 | unlock_page(page); | |
1480 | } | |
1481 | pagevec_release(&pvec); | |
1482 | cond_resched(); | |
1483 | } | |
1484 | return last_page; | |
1485 | } | |
1486 | ||
d68f735b | 1487 | static int __write_node_page(struct page *page, bool atomic, bool *submitted, |
b0af6d49 | 1488 | struct writeback_control *wbc, bool do_balance, |
50fa53ec | 1489 | enum iostat_type io_type, unsigned int *seq_id) |
faa24895 JK |
1490 | { |
1491 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); | |
1492 | nid_t nid; | |
1493 | struct node_info ni; | |
1494 | struct f2fs_io_info fio = { | |
1495 | .sbi = sbi, | |
39d787be | 1496 | .ino = ino_of_node(page), |
faa24895 JK |
1497 | .type = NODE, |
1498 | .op = REQ_OP_WRITE, | |
1499 | .op_flags = wbc_to_write_flags(wbc), | |
1500 | .page = page, | |
1501 | .encrypted_page = NULL, | |
d68f735b | 1502 | .submitted = false, |
b0af6d49 | 1503 | .io_type = io_type, |
578c6478 | 1504 | .io_wbc = wbc, |
faa24895 | 1505 | }; |
50fa53ec | 1506 | unsigned int seq; |
faa24895 JK |
1507 | |
1508 | trace_f2fs_writepage(page, NODE); | |
1509 | ||
868de613 JK |
1510 | if (unlikely(f2fs_cp_error(sbi))) |
1511 | goto redirty_out; | |
db198ae0 | 1512 | |
faa24895 JK |
1513 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
1514 | goto redirty_out; | |
faa24895 | 1515 | |
fd8c8caf CY |
1516 | if (wbc->sync_mode == WB_SYNC_NONE && |
1517 | IS_DNODE(page) && is_cold_node(page)) | |
1518 | goto redirty_out; | |
1519 | ||
faa24895 JK |
1520 | /* get old block addr of this node page */ |
1521 | nid = nid_of_node(page); | |
1522 | f2fs_bug_on(sbi, page->index != nid); | |
1523 | ||
7735730d CY |
1524 | if (f2fs_get_node_info(sbi, nid, &ni)) |
1525 | goto redirty_out; | |
1526 | ||
faa24895 JK |
1527 | if (wbc->for_reclaim) { |
1528 | if (!down_read_trylock(&sbi->node_write)) | |
1529 | goto redirty_out; | |
1530 | } else { | |
1531 | down_read(&sbi->node_write); | |
1532 | } | |
1533 | ||
faa24895 JK |
1534 | /* This page is already truncated */ |
1535 | if (unlikely(ni.blk_addr == NULL_ADDR)) { | |
1536 | ClearPageUptodate(page); | |
1537 | dec_page_count(sbi, F2FS_DIRTY_NODES); | |
1538 | up_read(&sbi->node_write); | |
1539 | unlock_page(page); | |
1540 | return 0; | |
1541 | } | |
1542 | ||
c9b60788 | 1543 | if (__is_valid_data_blkaddr(ni.blk_addr) && |
89d13c38 JK |
1544 | !f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC)) { |
1545 | up_read(&sbi->node_write); | |
c9b60788 | 1546 | goto redirty_out; |
89d13c38 | 1547 | } |
c9b60788 | 1548 | |
e7c75ab0 JK |
1549 | if (atomic && !test_opt(sbi, NOBARRIER)) |
1550 | fio.op_flags |= REQ_PREFLUSH | REQ_FUA; | |
1551 | ||
faa24895 | 1552 | set_page_writeback(page); |
17c50035 | 1553 | ClearPageError(page); |
50fa53ec CY |
1554 | |
1555 | if (f2fs_in_warm_node_list(sbi, page)) { | |
1556 | seq = f2fs_add_fsync_node_entry(sbi, page); | |
1557 | if (seq_id) | |
1558 | *seq_id = seq; | |
1559 | } | |
1560 | ||
faa24895 | 1561 | fio.old_blkaddr = ni.blk_addr; |
4d57b86d | 1562 | f2fs_do_write_node_page(nid, &fio); |
faa24895 JK |
1563 | set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); |
1564 | dec_page_count(sbi, F2FS_DIRTY_NODES); | |
1565 | up_read(&sbi->node_write); | |
1566 | ||
d68f735b | 1567 | if (wbc->for_reclaim) { |
bab475c5 | 1568 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, NODE); |
d68f735b JK |
1569 | submitted = NULL; |
1570 | } | |
faa24895 JK |
1571 | |
1572 | unlock_page(page); | |
1573 | ||
d68f735b | 1574 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 1575 | f2fs_submit_merged_write(sbi, NODE); |
d68f735b JK |
1576 | submitted = NULL; |
1577 | } | |
1578 | if (submitted) | |
1579 | *submitted = fio.submitted; | |
faa24895 | 1580 | |
401db79f YS |
1581 | if (do_balance) |
1582 | f2fs_balance_fs(sbi, false); | |
faa24895 JK |
1583 | return 0; |
1584 | ||
1585 | redirty_out: | |
1586 | redirty_page_for_writepage(wbc, page); | |
1587 | return AOP_WRITEPAGE_ACTIVATE; | |
1588 | } | |
1589 | ||
48018b4c | 1590 | int f2fs_move_node_page(struct page *node_page, int gc_type) |
f15194fc | 1591 | { |
48018b4c CY |
1592 | int err = 0; |
1593 | ||
f15194fc YH |
1594 | if (gc_type == FG_GC) { |
1595 | struct writeback_control wbc = { | |
1596 | .sync_mode = WB_SYNC_ALL, | |
1597 | .nr_to_write = 1, | |
1598 | .for_reclaim = 0, | |
1599 | }; | |
1600 | ||
f15194fc | 1601 | f2fs_wait_on_page_writeback(node_page, NODE, true); |
f15194fc | 1602 | f2fs_bug_on(F2FS_P_SB(node_page), PageWriteback(node_page)); |
8d64d365 CY |
1603 | |
1604 | set_page_dirty(node_page); | |
1605 | ||
48018b4c CY |
1606 | if (!clear_page_dirty_for_io(node_page)) { |
1607 | err = -EAGAIN; | |
f15194fc | 1608 | goto out_page; |
48018b4c | 1609 | } |
f15194fc YH |
1610 | |
1611 | if (__write_node_page(node_page, false, NULL, | |
48018b4c CY |
1612 | &wbc, false, FS_GC_NODE_IO, NULL)) { |
1613 | err = -EAGAIN; | |
f15194fc | 1614 | unlock_page(node_page); |
48018b4c | 1615 | } |
f15194fc YH |
1616 | goto release_page; |
1617 | } else { | |
1618 | /* set page dirty and write it */ | |
1619 | if (!PageWriteback(node_page)) | |
1620 | set_page_dirty(node_page); | |
1621 | } | |
1622 | out_page: | |
1623 | unlock_page(node_page); | |
1624 | release_page: | |
1625 | f2fs_put_page(node_page, 0); | |
48018b4c | 1626 | return err; |
f15194fc YH |
1627 | } |
1628 | ||
faa24895 JK |
1629 | static int f2fs_write_node_page(struct page *page, |
1630 | struct writeback_control *wbc) | |
1631 | { | |
50fa53ec CY |
1632 | return __write_node_page(page, false, NULL, wbc, false, |
1633 | FS_NODE_IO, NULL); | |
faa24895 JK |
1634 | } |
1635 | ||
4d57b86d | 1636 | int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, |
50fa53ec CY |
1637 | struct writeback_control *wbc, bool atomic, |
1638 | unsigned int *seq_id) | |
e05df3b1 | 1639 | { |
028a63a6 | 1640 | pgoff_t index; |
e05df3b1 | 1641 | struct pagevec pvec; |
c267ec15 | 1642 | int ret = 0; |
608514de JK |
1643 | struct page *last_page = NULL; |
1644 | bool marked = false; | |
26de9b11 | 1645 | nid_t ino = inode->i_ino; |
028a63a6 | 1646 | int nr_pages; |
bab475c5 | 1647 | int nwritten = 0; |
52681375 | 1648 | |
608514de JK |
1649 | if (atomic) { |
1650 | last_page = last_fsync_dnode(sbi, ino); | |
1651 | if (IS_ERR_OR_NULL(last_page)) | |
1652 | return PTR_ERR_OR_ZERO(last_page); | |
1653 | } | |
1654 | retry: | |
86679820 | 1655 | pagevec_init(&pvec); |
52681375 | 1656 | index = 0; |
028a63a6 JK |
1657 | |
1658 | while ((nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, | |
67fd707f | 1659 | PAGECACHE_TAG_DIRTY))) { |
028a63a6 | 1660 | int i; |
52681375 JK |
1661 | |
1662 | for (i = 0; i < nr_pages; i++) { | |
1663 | struct page *page = pvec.pages[i]; | |
d68f735b | 1664 | bool submitted = false; |
52681375 JK |
1665 | |
1666 | if (unlikely(f2fs_cp_error(sbi))) { | |
608514de | 1667 | f2fs_put_page(last_page, 0); |
52681375 | 1668 | pagevec_release(&pvec); |
9de69279 CY |
1669 | ret = -EIO; |
1670 | goto out; | |
52681375 JK |
1671 | } |
1672 | ||
1673 | if (!IS_DNODE(page) || !is_cold_node(page)) | |
1674 | continue; | |
1675 | if (ino_of_node(page) != ino) | |
1676 | continue; | |
1677 | ||
1678 | lock_page(page); | |
1679 | ||
1680 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { | |
1681 | continue_unlock: | |
1682 | unlock_page(page); | |
1683 | continue; | |
1684 | } | |
1685 | if (ino_of_node(page) != ino) | |
1686 | goto continue_unlock; | |
1687 | ||
608514de | 1688 | if (!PageDirty(page) && page != last_page) { |
52681375 JK |
1689 | /* someone wrote it for us */ |
1690 | goto continue_unlock; | |
1691 | } | |
1692 | ||
1693 | f2fs_wait_on_page_writeback(page, NODE, true); | |
1694 | BUG_ON(PageWriteback(page)); | |
52681375 | 1695 | |
d29fd172 JK |
1696 | set_fsync_mark(page, 0); |
1697 | set_dentry_mark(page, 0); | |
1698 | ||
608514de JK |
1699 | if (!atomic || page == last_page) { |
1700 | set_fsync_mark(page, 1); | |
26de9b11 JK |
1701 | if (IS_INODE(page)) { |
1702 | if (is_inode_flag_set(inode, | |
1703 | FI_DIRTY_INODE)) | |
4d57b86d | 1704 | f2fs_update_inode(inode, page); |
608514de | 1705 | set_dentry_mark(page, |
4d57b86d | 1706 | f2fs_need_dentry_mark(sbi, ino)); |
26de9b11 | 1707 | } |
608514de JK |
1708 | /* may be written by other thread */ |
1709 | if (!PageDirty(page)) | |
1710 | set_page_dirty(page); | |
1711 | } | |
1712 | ||
1713 | if (!clear_page_dirty_for_io(page)) | |
1714 | goto continue_unlock; | |
52681375 | 1715 | |
e7c75ab0 | 1716 | ret = __write_node_page(page, atomic && |
d68f735b | 1717 | page == last_page, |
b0af6d49 | 1718 | &submitted, wbc, true, |
50fa53ec | 1719 | FS_NODE_IO, seq_id); |
c267ec15 | 1720 | if (ret) { |
52681375 | 1721 | unlock_page(page); |
608514de JK |
1722 | f2fs_put_page(last_page, 0); |
1723 | break; | |
d68f735b | 1724 | } else if (submitted) { |
bab475c5 | 1725 | nwritten++; |
608514de | 1726 | } |
3f5f4959 | 1727 | |
608514de JK |
1728 | if (page == last_page) { |
1729 | f2fs_put_page(page, 0); | |
1730 | marked = true; | |
52681375 | 1731 | break; |
c267ec15 | 1732 | } |
52681375 JK |
1733 | } |
1734 | pagevec_release(&pvec); | |
1735 | cond_resched(); | |
1736 | ||
608514de | 1737 | if (ret || marked) |
52681375 JK |
1738 | break; |
1739 | } | |
608514de JK |
1740 | if (!ret && atomic && !marked) { |
1741 | f2fs_msg(sbi->sb, KERN_DEBUG, | |
1742 | "Retry to write fsync mark: ino=%u, idx=%lx", | |
1743 | ino, last_page->index); | |
1744 | lock_page(last_page); | |
d40a43af | 1745 | f2fs_wait_on_page_writeback(last_page, NODE, true); |
608514de JK |
1746 | set_page_dirty(last_page); |
1747 | unlock_page(last_page); | |
1748 | goto retry; | |
1749 | } | |
9de69279 | 1750 | out: |
bab475c5 CY |
1751 | if (nwritten) |
1752 | f2fs_submit_merged_write_cond(sbi, NULL, NULL, ino, NODE); | |
c267ec15 | 1753 | return ret ? -EIO: 0; |
52681375 JK |
1754 | } |
1755 | ||
4d57b86d CY |
1756 | int f2fs_sync_node_pages(struct f2fs_sb_info *sbi, |
1757 | struct writeback_control *wbc, | |
b0af6d49 | 1758 | bool do_balance, enum iostat_type io_type) |
52681375 | 1759 | { |
028a63a6 | 1760 | pgoff_t index; |
52681375 JK |
1761 | struct pagevec pvec; |
1762 | int step = 0; | |
12bb0a8f | 1763 | int nwritten = 0; |
3f5f4959 | 1764 | int ret = 0; |
c29fd0c0 | 1765 | int nr_pages, done = 0; |
e05df3b1 | 1766 | |
86679820 | 1767 | pagevec_init(&pvec); |
e05df3b1 JK |
1768 | |
1769 | next_step: | |
1770 | index = 0; | |
028a63a6 | 1771 | |
c29fd0c0 CY |
1772 | while (!done && (nr_pages = pagevec_lookup_tag(&pvec, |
1773 | NODE_MAPPING(sbi), &index, PAGECACHE_TAG_DIRTY))) { | |
028a63a6 | 1774 | int i; |
e05df3b1 JK |
1775 | |
1776 | for (i = 0; i < nr_pages; i++) { | |
1777 | struct page *page = pvec.pages[i]; | |
d68f735b | 1778 | bool submitted = false; |
e05df3b1 | 1779 | |
c29fd0c0 CY |
1780 | /* give a priority to WB_SYNC threads */ |
1781 | if (atomic_read(&sbi->wb_sync_req[NODE]) && | |
1782 | wbc->sync_mode == WB_SYNC_NONE) { | |
1783 | done = 1; | |
1784 | break; | |
1785 | } | |
1786 | ||
e05df3b1 JK |
1787 | /* |
1788 | * flushing sequence with step: | |
1789 | * 0. indirect nodes | |
1790 | * 1. dentry dnodes | |
1791 | * 2. file dnodes | |
1792 | */ | |
1793 | if (step == 0 && IS_DNODE(page)) | |
1794 | continue; | |
1795 | if (step == 1 && (!IS_DNODE(page) || | |
1796 | is_cold_node(page))) | |
1797 | continue; | |
1798 | if (step == 2 && (!IS_DNODE(page) || | |
1799 | !is_cold_node(page))) | |
1800 | continue; | |
9a4cbc9e | 1801 | lock_node: |
4b270a8c CY |
1802 | if (wbc->sync_mode == WB_SYNC_ALL) |
1803 | lock_page(page); | |
1804 | else if (!trylock_page(page)) | |
e05df3b1 JK |
1805 | continue; |
1806 | ||
4ef51a8f | 1807 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
e05df3b1 JK |
1808 | continue_unlock: |
1809 | unlock_page(page); | |
1810 | continue; | |
1811 | } | |
e05df3b1 JK |
1812 | |
1813 | if (!PageDirty(page)) { | |
1814 | /* someone wrote it for us */ | |
1815 | goto continue_unlock; | |
1816 | } | |
1817 | ||
2049d4fc | 1818 | /* flush inline_data */ |
52681375 | 1819 | if (is_inline_node(page)) { |
2049d4fc JK |
1820 | clear_inline_node(page); |
1821 | unlock_page(page); | |
1822 | flush_inline_data(sbi, ino_of_node(page)); | |
9a4cbc9e | 1823 | goto lock_node; |
2049d4fc JK |
1824 | } |
1825 | ||
fa3d2bdf JK |
1826 | f2fs_wait_on_page_writeback(page, NODE, true); |
1827 | ||
1828 | BUG_ON(PageWriteback(page)); | |
e05df3b1 JK |
1829 | if (!clear_page_dirty_for_io(page)) |
1830 | goto continue_unlock; | |
1831 | ||
52681375 JK |
1832 | set_fsync_mark(page, 0); |
1833 | set_dentry_mark(page, 0); | |
52746519 | 1834 | |
401db79f | 1835 | ret = __write_node_page(page, false, &submitted, |
50fa53ec | 1836 | wbc, do_balance, io_type, NULL); |
d68f735b | 1837 | if (ret) |
52746519 | 1838 | unlock_page(page); |
d68f735b | 1839 | else if (submitted) |
3f5f4959 | 1840 | nwritten++; |
e05df3b1 JK |
1841 | |
1842 | if (--wbc->nr_to_write == 0) | |
1843 | break; | |
1844 | } | |
1845 | pagevec_release(&pvec); | |
1846 | cond_resched(); | |
1847 | ||
1848 | if (wbc->nr_to_write == 0) { | |
1849 | step = 2; | |
1850 | break; | |
1851 | } | |
1852 | } | |
1853 | ||
1854 | if (step < 2) { | |
fd8c8caf CY |
1855 | if (wbc->sync_mode == WB_SYNC_NONE && step == 1) |
1856 | goto out; | |
e05df3b1 JK |
1857 | step++; |
1858 | goto next_step; | |
1859 | } | |
fd8c8caf | 1860 | out: |
3f5f4959 | 1861 | if (nwritten) |
b9109b0e | 1862 | f2fs_submit_merged_write(sbi, NODE); |
db198ae0 CY |
1863 | |
1864 | if (unlikely(f2fs_cp_error(sbi))) | |
1865 | return -EIO; | |
3f5f4959 | 1866 | return ret; |
e05df3b1 JK |
1867 | } |
1868 | ||
50fa53ec CY |
1869 | int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, |
1870 | unsigned int seq_id) | |
cfe58f9d | 1871 | { |
50fa53ec CY |
1872 | struct fsync_node_entry *fn; |
1873 | struct page *page; | |
1874 | struct list_head *head = &sbi->fsync_node_list; | |
1875 | unsigned long flags; | |
1876 | unsigned int cur_seq_id = 0; | |
280db3c8 | 1877 | int ret2, ret = 0; |
cfe58f9d | 1878 | |
50fa53ec CY |
1879 | while (seq_id && cur_seq_id < seq_id) { |
1880 | spin_lock_irqsave(&sbi->fsync_node_lock, flags); | |
1881 | if (list_empty(head)) { | |
1882 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
1883 | break; | |
1884 | } | |
1885 | fn = list_first_entry(head, struct fsync_node_entry, list); | |
1886 | if (fn->seq_id > seq_id) { | |
1887 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
1888 | break; | |
1889 | } | |
1890 | cur_seq_id = fn->seq_id; | |
1891 | page = fn->page; | |
1892 | get_page(page); | |
1893 | spin_unlock_irqrestore(&sbi->fsync_node_lock, flags); | |
4ef51a8f | 1894 | |
50fa53ec CY |
1895 | f2fs_wait_on_page_writeback(page, NODE, true); |
1896 | if (TestClearPageError(page)) | |
1897 | ret = -EIO; | |
cfe58f9d | 1898 | |
50fa53ec | 1899 | put_page(page); |
cfe58f9d | 1900 | |
50fa53ec CY |
1901 | if (ret) |
1902 | break; | |
cfe58f9d JK |
1903 | } |
1904 | ||
280db3c8 | 1905 | ret2 = filemap_check_errors(NODE_MAPPING(sbi)); |
cfe58f9d JK |
1906 | if (!ret) |
1907 | ret = ret2; | |
50fa53ec | 1908 | |
cfe58f9d JK |
1909 | return ret; |
1910 | } | |
1911 | ||
e05df3b1 JK |
1912 | static int f2fs_write_node_pages(struct address_space *mapping, |
1913 | struct writeback_control *wbc) | |
1914 | { | |
4081363f | 1915 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
9dfa1baf | 1916 | struct blk_plug plug; |
50c8cdb3 | 1917 | long diff; |
e05df3b1 | 1918 | |
0771fcc7 CY |
1919 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
1920 | goto skip_write; | |
1921 | ||
4660f9c0 JK |
1922 | /* balancing f2fs's metadata in background */ |
1923 | f2fs_balance_fs_bg(sbi); | |
e05df3b1 | 1924 | |
a7fdffbd | 1925 | /* collect a number of dirty node pages and write together */ |
87d6f890 | 1926 | if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) |
d3baf95d | 1927 | goto skip_write; |
a7fdffbd | 1928 | |
c29fd0c0 CY |
1929 | if (wbc->sync_mode == WB_SYNC_ALL) |
1930 | atomic_inc(&sbi->wb_sync_req[NODE]); | |
1931 | else if (atomic_read(&sbi->wb_sync_req[NODE])) | |
1932 | goto skip_write; | |
1933 | ||
d31c7c3f YH |
1934 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
1935 | ||
50c8cdb3 | 1936 | diff = nr_pages_to_write(sbi, NODE, wbc); |
9dfa1baf | 1937 | blk_start_plug(&plug); |
4d57b86d | 1938 | f2fs_sync_node_pages(sbi, wbc, true, FS_NODE_IO); |
9dfa1baf | 1939 | blk_finish_plug(&plug); |
50c8cdb3 | 1940 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); |
c29fd0c0 CY |
1941 | |
1942 | if (wbc->sync_mode == WB_SYNC_ALL) | |
1943 | atomic_dec(&sbi->wb_sync_req[NODE]); | |
e05df3b1 | 1944 | return 0; |
d3baf95d JK |
1945 | |
1946 | skip_write: | |
1947 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); | |
d31c7c3f | 1948 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
d3baf95d | 1949 | return 0; |
e05df3b1 JK |
1950 | } |
1951 | ||
1952 | static int f2fs_set_node_page_dirty(struct page *page) | |
1953 | { | |
26c6b887 JK |
1954 | trace_f2fs_set_page_dirty(page, NODE); |
1955 | ||
237c0790 JK |
1956 | if (!PageUptodate(page)) |
1957 | SetPageUptodate(page); | |
54c55c4e WG |
1958 | #ifdef CONFIG_F2FS_CHECK_FS |
1959 | if (IS_INODE(page)) | |
1960 | f2fs_inode_chksum_set(F2FS_P_SB(page), page); | |
1961 | #endif | |
e05df3b1 | 1962 | if (!PageDirty(page)) { |
b87078ad | 1963 | __set_page_dirty_nobuffers(page); |
4081363f | 1964 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); |
e05df3b1 | 1965 | SetPagePrivate(page); |
9e4ded3f | 1966 | f2fs_trace_pid(page); |
e05df3b1 JK |
1967 | return 1; |
1968 | } | |
1969 | return 0; | |
1970 | } | |
1971 | ||
0a8165d7 | 1972 | /* |
e05df3b1 JK |
1973 | * Structure of the f2fs node operations |
1974 | */ | |
1975 | const struct address_space_operations f2fs_node_aops = { | |
1976 | .writepage = f2fs_write_node_page, | |
1977 | .writepages = f2fs_write_node_pages, | |
1978 | .set_page_dirty = f2fs_set_node_page_dirty, | |
487261f3 CY |
1979 | .invalidatepage = f2fs_invalidate_page, |
1980 | .releasepage = f2fs_release_page, | |
5b7a487c WG |
1981 | #ifdef CONFIG_MIGRATION |
1982 | .migratepage = f2fs_migrate_page, | |
1983 | #endif | |
e05df3b1 JK |
1984 | }; |
1985 | ||
8a7ed66a JK |
1986 | static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, |
1987 | nid_t n) | |
e05df3b1 | 1988 | { |
8a7ed66a | 1989 | return radix_tree_lookup(&nm_i->free_nid_root, n); |
e05df3b1 JK |
1990 | } |
1991 | ||
9a4ffdf5 | 1992 | static int __insert_free_nid(struct f2fs_sb_info *sbi, |
a0761f63 | 1993 | struct free_nid *i, enum nid_state state) |
e05df3b1 | 1994 | { |
b8559dc2 CY |
1995 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
1996 | ||
a0761f63 FL |
1997 | int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); |
1998 | if (err) | |
1999 | return err; | |
eb0aa4b8 | 2000 | |
9a4ffdf5 CY |
2001 | f2fs_bug_on(sbi, state != i->state); |
2002 | nm_i->nid_cnt[state]++; | |
2003 | if (state == FREE_NID) | |
2004 | list_add_tail(&i->list, &nm_i->free_nid_list); | |
eb0aa4b8 | 2005 | return 0; |
b8559dc2 CY |
2006 | } |
2007 | ||
9a4ffdf5 | 2008 | static void __remove_free_nid(struct f2fs_sb_info *sbi, |
a0761f63 | 2009 | struct free_nid *i, enum nid_state state) |
b8559dc2 CY |
2010 | { |
2011 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2012 | ||
9a4ffdf5 CY |
2013 | f2fs_bug_on(sbi, state != i->state); |
2014 | nm_i->nid_cnt[state]--; | |
2015 | if (state == FREE_NID) | |
2016 | list_del(&i->list); | |
a0761f63 FL |
2017 | radix_tree_delete(&nm_i->free_nid_root, i->nid); |
2018 | } | |
2019 | ||
2020 | static void __move_free_nid(struct f2fs_sb_info *sbi, struct free_nid *i, | |
2021 | enum nid_state org_state, enum nid_state dst_state) | |
b8559dc2 CY |
2022 | { |
2023 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2024 | ||
a0761f63 FL |
2025 | f2fs_bug_on(sbi, org_state != i->state); |
2026 | i->state = dst_state; | |
2027 | nm_i->nid_cnt[org_state]--; | |
2028 | nm_i->nid_cnt[dst_state]++; | |
2029 | ||
2030 | switch (dst_state) { | |
2031 | case PREALLOC_NID: | |
2032 | list_del(&i->list); | |
2033 | break; | |
2034 | case FREE_NID: | |
2035 | list_add_tail(&i->list, &nm_i->free_nid_list); | |
2036 | break; | |
2037 | default: | |
2038 | BUG_ON(1); | |
2039 | } | |
e05df3b1 JK |
2040 | } |
2041 | ||
5921aaa1 L |
2042 | static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, |
2043 | bool set, bool build) | |
2044 | { | |
2045 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2046 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); | |
2047 | unsigned int nid_ofs = nid - START_NID(nid); | |
2048 | ||
2049 | if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) | |
2050 | return; | |
2051 | ||
2052 | if (set) { | |
2053 | if (test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) | |
2054 | return; | |
2055 | __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); | |
2056 | nm_i->free_nid_count[nat_ofs]++; | |
2057 | } else { | |
2058 | if (!test_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs])) | |
2059 | return; | |
2060 | __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); | |
2061 | if (!build) | |
2062 | nm_i->free_nid_count[nat_ofs]--; | |
2063 | } | |
2064 | } | |
2065 | ||
4ac91242 | 2066 | /* return if the nid is recognized as free */ |
5921aaa1 L |
2067 | static bool add_free_nid(struct f2fs_sb_info *sbi, |
2068 | nid_t nid, bool build, bool update) | |
e05df3b1 | 2069 | { |
6fb03f3a | 2070 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
30a61ddf | 2071 | struct free_nid *i, *e; |
59bbd474 | 2072 | struct nat_entry *ne; |
30a61ddf CY |
2073 | int err = -EINVAL; |
2074 | bool ret = false; | |
9198aceb JK |
2075 | |
2076 | /* 0 nid should not be used */ | |
cfb271d4 | 2077 | if (unlikely(nid == 0)) |
4ac91242 | 2078 | return false; |
59bbd474 | 2079 | |
7bd59381 | 2080 | i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); |
e05df3b1 | 2081 | i->nid = nid; |
9a4ffdf5 | 2082 | i->state = FREE_NID; |
e05df3b1 | 2083 | |
5921aaa1 | 2084 | radix_tree_preload(GFP_NOFS | __GFP_NOFAIL); |
769ec6e5 | 2085 | |
b8559dc2 | 2086 | spin_lock(&nm_i->nid_list_lock); |
30a61ddf CY |
2087 | |
2088 | if (build) { | |
2089 | /* | |
2090 | * Thread A Thread B | |
2091 | * - f2fs_create | |
2092 | * - f2fs_new_inode | |
4d57b86d | 2093 | * - f2fs_alloc_nid |
9a4ffdf5 | 2094 | * - __insert_nid_to_list(PREALLOC_NID) |
30a61ddf | 2095 | * - f2fs_balance_fs_bg |
4d57b86d CY |
2096 | * - f2fs_build_free_nids |
2097 | * - __f2fs_build_free_nids | |
30a61ddf CY |
2098 | * - scan_nat_page |
2099 | * - add_free_nid | |
2100 | * - __lookup_nat_cache | |
2101 | * - f2fs_add_link | |
4d57b86d CY |
2102 | * - f2fs_init_inode_metadata |
2103 | * - f2fs_new_inode_page | |
2104 | * - f2fs_new_node_page | |
30a61ddf | 2105 | * - set_node_addr |
4d57b86d | 2106 | * - f2fs_alloc_nid_done |
9a4ffdf5 CY |
2107 | * - __remove_nid_from_list(PREALLOC_NID) |
2108 | * - __insert_nid_to_list(FREE_NID) | |
30a61ddf CY |
2109 | */ |
2110 | ne = __lookup_nat_cache(nm_i, nid); | |
2111 | if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || | |
2112 | nat_get_blkaddr(ne) != NULL_ADDR)) | |
2113 | goto err_out; | |
2114 | ||
2115 | e = __lookup_free_nid_list(nm_i, nid); | |
2116 | if (e) { | |
9a4ffdf5 | 2117 | if (e->state == FREE_NID) |
30a61ddf CY |
2118 | ret = true; |
2119 | goto err_out; | |
2120 | } | |
2121 | } | |
2122 | ret = true; | |
a0761f63 | 2123 | err = __insert_free_nid(sbi, i, FREE_NID); |
30a61ddf | 2124 | err_out: |
5921aaa1 L |
2125 | if (update) { |
2126 | update_free_nid_bitmap(sbi, nid, ret, build); | |
2127 | if (!build) | |
2128 | nm_i->available_nids++; | |
2129 | } | |
eb0aa4b8 JK |
2130 | spin_unlock(&nm_i->nid_list_lock); |
2131 | radix_tree_preload_end(); | |
5921aaa1 | 2132 | |
30a61ddf | 2133 | if (err) |
e05df3b1 | 2134 | kmem_cache_free(free_nid_slab, i); |
30a61ddf | 2135 | return ret; |
e05df3b1 JK |
2136 | } |
2137 | ||
b8559dc2 | 2138 | static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 | 2139 | { |
b8559dc2 | 2140 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e05df3b1 | 2141 | struct free_nid *i; |
cf0ee0f0 CY |
2142 | bool need_free = false; |
2143 | ||
b8559dc2 | 2144 | spin_lock(&nm_i->nid_list_lock); |
8a7ed66a | 2145 | i = __lookup_free_nid_list(nm_i, nid); |
9a4ffdf5 | 2146 | if (i && i->state == FREE_NID) { |
a0761f63 | 2147 | __remove_free_nid(sbi, i, FREE_NID); |
cf0ee0f0 | 2148 | need_free = true; |
e05df3b1 | 2149 | } |
b8559dc2 | 2150 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 CY |
2151 | |
2152 | if (need_free) | |
2153 | kmem_cache_free(free_nid_slab, i); | |
e05df3b1 JK |
2154 | } |
2155 | ||
e2374015 | 2156 | static int scan_nat_page(struct f2fs_sb_info *sbi, |
e05df3b1 JK |
2157 | struct page *nat_page, nid_t start_nid) |
2158 | { | |
6fb03f3a | 2159 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e05df3b1 JK |
2160 | struct f2fs_nat_block *nat_blk = page_address(nat_page); |
2161 | block_t blk_addr; | |
4ac91242 | 2162 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); |
e05df3b1 JK |
2163 | int i; |
2164 | ||
23380b85 | 2165 | __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); |
4ac91242 | 2166 | |
e05df3b1 JK |
2167 | i = start_nid % NAT_ENTRY_PER_BLOCK; |
2168 | ||
2169 | for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { | |
cfb271d4 | 2170 | if (unlikely(start_nid >= nm_i->max_nid)) |
04431c44 | 2171 | break; |
23d38844 HL |
2172 | |
2173 | blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); | |
e2374015 CY |
2174 | |
2175 | if (blk_addr == NEW_ADDR) | |
2176 | return -EINVAL; | |
2177 | ||
5921aaa1 L |
2178 | if (blk_addr == NULL_ADDR) { |
2179 | add_free_nid(sbi, start_nid, true, true); | |
2180 | } else { | |
2181 | spin_lock(&NM_I(sbi)->nid_list_lock); | |
2182 | update_free_nid_bitmap(sbi, start_nid, false, true); | |
2183 | spin_unlock(&NM_I(sbi)->nid_list_lock); | |
2184 | } | |
4ac91242 | 2185 | } |
e2374015 CY |
2186 | |
2187 | return 0; | |
4ac91242 CY |
2188 | } |
2189 | ||
2fbaa25f | 2190 | static void scan_curseg_cache(struct f2fs_sb_info *sbi) |
4ac91242 | 2191 | { |
4ac91242 CY |
2192 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); |
2193 | struct f2fs_journal *journal = curseg->journal; | |
2fbaa25f CY |
2194 | int i; |
2195 | ||
2196 | down_read(&curseg->journal_rwsem); | |
2197 | for (i = 0; i < nats_in_cursum(journal); i++) { | |
2198 | block_t addr; | |
2199 | nid_t nid; | |
2200 | ||
2201 | addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); | |
2202 | nid = le32_to_cpu(nid_in_journal(journal, i)); | |
2203 | if (addr == NULL_ADDR) | |
5921aaa1 | 2204 | add_free_nid(sbi, nid, true, false); |
2fbaa25f CY |
2205 | else |
2206 | remove_free_nid(sbi, nid); | |
2207 | } | |
2208 | up_read(&curseg->journal_rwsem); | |
2209 | } | |
2210 | ||
2211 | static void scan_free_nid_bits(struct f2fs_sb_info *sbi) | |
2212 | { | |
2213 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
4ac91242 | 2214 | unsigned int i, idx; |
97456574 | 2215 | nid_t nid; |
4ac91242 CY |
2216 | |
2217 | down_read(&nm_i->nat_tree_lock); | |
2218 | ||
2219 | for (i = 0; i < nm_i->nat_blocks; i++) { | |
2220 | if (!test_bit_le(i, nm_i->nat_block_bitmap)) | |
2221 | continue; | |
586d1492 CY |
2222 | if (!nm_i->free_nid_count[i]) |
2223 | continue; | |
4ac91242 | 2224 | for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { |
97456574 FL |
2225 | idx = find_next_bit_le(nm_i->free_nid_bitmap[i], |
2226 | NAT_ENTRY_PER_BLOCK, idx); | |
2227 | if (idx >= NAT_ENTRY_PER_BLOCK) | |
2228 | break; | |
4ac91242 CY |
2229 | |
2230 | nid = i * NAT_ENTRY_PER_BLOCK + idx; | |
5921aaa1 | 2231 | add_free_nid(sbi, nid, true, false); |
4ac91242 | 2232 | |
9a4ffdf5 | 2233 | if (nm_i->nid_cnt[FREE_NID] >= MAX_FREE_NIDS) |
4ac91242 CY |
2234 | goto out; |
2235 | } | |
2236 | } | |
2237 | out: | |
2fbaa25f | 2238 | scan_curseg_cache(sbi); |
4ac91242 | 2239 | |
4ac91242 | 2240 | up_read(&nm_i->nat_tree_lock); |
e05df3b1 JK |
2241 | } |
2242 | ||
e2374015 | 2243 | static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, |
4d57b86d | 2244 | bool sync, bool mount) |
e05df3b1 | 2245 | { |
e05df3b1 | 2246 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e2374015 | 2247 | int i = 0, ret; |
55008d84 | 2248 | nid_t nid = nm_i->next_scan_nid; |
e05df3b1 | 2249 | |
e9cdd307 YH |
2250 | if (unlikely(nid >= nm_i->max_nid)) |
2251 | nid = 0; | |
2252 | ||
55008d84 | 2253 | /* Enough entries */ |
9a4ffdf5 | 2254 | if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) |
e2374015 | 2255 | return 0; |
e05df3b1 | 2256 | |
4d57b86d | 2257 | if (!sync && !f2fs_available_free_memory(sbi, FREE_NIDS)) |
e2374015 | 2258 | return 0; |
e05df3b1 | 2259 | |
4ac91242 CY |
2260 | if (!mount) { |
2261 | /* try to find free nids in free_nid_bitmap */ | |
2262 | scan_free_nid_bits(sbi); | |
2263 | ||
74986213 | 2264 | if (nm_i->nid_cnt[FREE_NID] >= NAT_ENTRY_PER_BLOCK) |
e2374015 | 2265 | return 0; |
22ad0b6a JK |
2266 | } |
2267 | ||
55008d84 | 2268 | /* readahead nat pages to be scanned */ |
4d57b86d | 2269 | f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, |
26879fb1 | 2270 | META_NAT, true); |
e05df3b1 | 2271 | |
b873b798 | 2272 | down_read(&nm_i->nat_tree_lock); |
a5131193 | 2273 | |
e05df3b1 | 2274 | while (1) { |
66e83361 YH |
2275 | if (!test_bit_le(NAT_BLOCK_OFFSET(nid), |
2276 | nm_i->nat_block_bitmap)) { | |
2277 | struct page *page = get_current_nat_page(sbi, nid); | |
e05df3b1 | 2278 | |
edc55aaf JK |
2279 | if (IS_ERR(page)) { |
2280 | ret = PTR_ERR(page); | |
2281 | } else { | |
2282 | ret = scan_nat_page(sbi, page, nid); | |
2283 | f2fs_put_page(page, 1); | |
2284 | } | |
e2374015 CY |
2285 | |
2286 | if (ret) { | |
2287 | up_read(&nm_i->nat_tree_lock); | |
2288 | f2fs_bug_on(sbi, !mount); | |
2289 | f2fs_msg(sbi->sb, KERN_ERR, | |
2290 | "NAT is corrupt, run fsck to fix it"); | |
edc55aaf | 2291 | return ret; |
e2374015 | 2292 | } |
66e83361 | 2293 | } |
e05df3b1 JK |
2294 | |
2295 | nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); | |
cfb271d4 | 2296 | if (unlikely(nid >= nm_i->max_nid)) |
e05df3b1 | 2297 | nid = 0; |
55008d84 | 2298 | |
a6d494b6 | 2299 | if (++i >= FREE_NID_PAGES) |
e05df3b1 JK |
2300 | break; |
2301 | } | |
2302 | ||
55008d84 JK |
2303 | /* go to the next free nat pages to find free nids abundantly */ |
2304 | nm_i->next_scan_nid = nid; | |
e05df3b1 JK |
2305 | |
2306 | /* find free nids from current sum_pages */ | |
2fbaa25f | 2307 | scan_curseg_cache(sbi); |
dfc08a12 | 2308 | |
b873b798 | 2309 | up_read(&nm_i->nat_tree_lock); |
2db2388f | 2310 | |
4d57b86d | 2311 | f2fs_ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), |
ea1a29a0 | 2312 | nm_i->ra_nid_pages, META_NAT, false); |
e2374015 CY |
2313 | |
2314 | return 0; | |
e05df3b1 JK |
2315 | } |
2316 | ||
e2374015 | 2317 | int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) |
2411cf5b | 2318 | { |
e2374015 CY |
2319 | int ret; |
2320 | ||
2411cf5b | 2321 | mutex_lock(&NM_I(sbi)->build_lock); |
e2374015 | 2322 | ret = __f2fs_build_free_nids(sbi, sync, mount); |
2411cf5b | 2323 | mutex_unlock(&NM_I(sbi)->build_lock); |
e2374015 CY |
2324 | |
2325 | return ret; | |
2411cf5b CY |
2326 | } |
2327 | ||
e05df3b1 JK |
2328 | /* |
2329 | * If this function returns success, caller can obtain a new nid | |
2330 | * from second parameter of this function. | |
2331 | * The returned nid could be used ino as well as nid when inode is created. | |
2332 | */ | |
4d57b86d | 2333 | bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) |
e05df3b1 JK |
2334 | { |
2335 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2336 | struct free_nid *i = NULL; | |
e05df3b1 | 2337 | retry: |
55523519 CY |
2338 | if (time_to_inject(sbi, FAULT_ALLOC_NID)) { |
2339 | f2fs_show_injection_info(FAULT_ALLOC_NID); | |
cb78942b | 2340 | return false; |
55523519 | 2341 | } |
7fa750a1 | 2342 | |
b8559dc2 | 2343 | spin_lock(&nm_i->nid_list_lock); |
e05df3b1 | 2344 | |
04d47e67 CY |
2345 | if (unlikely(nm_i->available_nids == 0)) { |
2346 | spin_unlock(&nm_i->nid_list_lock); | |
2347 | return false; | |
2348 | } | |
e05df3b1 | 2349 | |
4d57b86d CY |
2350 | /* We should not use stale free nids created by f2fs_build_free_nids */ |
2351 | if (nm_i->nid_cnt[FREE_NID] && !on_f2fs_build_free_nids(nm_i)) { | |
9a4ffdf5 CY |
2352 | f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); |
2353 | i = list_first_entry(&nm_i->free_nid_list, | |
b8559dc2 | 2354 | struct free_nid, list); |
55008d84 | 2355 | *nid = i->nid; |
b8559dc2 | 2356 | |
a0761f63 | 2357 | __move_free_nid(sbi, i, FREE_NID, PREALLOC_NID); |
04d47e67 | 2358 | nm_i->available_nids--; |
4ac91242 | 2359 | |
346fe752 | 2360 | update_free_nid_bitmap(sbi, *nid, false, false); |
4ac91242 | 2361 | |
b8559dc2 | 2362 | spin_unlock(&nm_i->nid_list_lock); |
55008d84 JK |
2363 | return true; |
2364 | } | |
b8559dc2 | 2365 | spin_unlock(&nm_i->nid_list_lock); |
55008d84 JK |
2366 | |
2367 | /* Let's scan nat pages and its caches to get free nids */ | |
f84262b0 JK |
2368 | if (!f2fs_build_free_nids(sbi, true, false)) |
2369 | goto retry; | |
2370 | return false; | |
e05df3b1 JK |
2371 | } |
2372 | ||
0a8165d7 | 2373 | /* |
4d57b86d | 2374 | * f2fs_alloc_nid() should be called prior to this function. |
e05df3b1 | 2375 | */ |
4d57b86d | 2376 | void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 JK |
2377 | { |
2378 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2379 | struct free_nid *i; | |
2380 | ||
b8559dc2 | 2381 | spin_lock(&nm_i->nid_list_lock); |
8a7ed66a | 2382 | i = __lookup_free_nid_list(nm_i, nid); |
b8559dc2 | 2383 | f2fs_bug_on(sbi, !i); |
a0761f63 | 2384 | __remove_free_nid(sbi, i, PREALLOC_NID); |
b8559dc2 | 2385 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 CY |
2386 | |
2387 | kmem_cache_free(free_nid_slab, i); | |
e05df3b1 JK |
2388 | } |
2389 | ||
0a8165d7 | 2390 | /* |
4d57b86d | 2391 | * f2fs_alloc_nid() should be called prior to this function. |
e05df3b1 | 2392 | */ |
4d57b86d | 2393 | void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 | 2394 | { |
49952fa1 JK |
2395 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
2396 | struct free_nid *i; | |
cf0ee0f0 | 2397 | bool need_free = false; |
49952fa1 | 2398 | |
65985d93 JK |
2399 | if (!nid) |
2400 | return; | |
2401 | ||
b8559dc2 | 2402 | spin_lock(&nm_i->nid_list_lock); |
8a7ed66a | 2403 | i = __lookup_free_nid_list(nm_i, nid); |
b8559dc2 CY |
2404 | f2fs_bug_on(sbi, !i); |
2405 | ||
4d57b86d | 2406 | if (!f2fs_available_free_memory(sbi, FREE_NIDS)) { |
a0761f63 | 2407 | __remove_free_nid(sbi, i, PREALLOC_NID); |
cf0ee0f0 | 2408 | need_free = true; |
95630cba | 2409 | } else { |
a0761f63 | 2410 | __move_free_nid(sbi, i, PREALLOC_NID, FREE_NID); |
95630cba | 2411 | } |
04d47e67 CY |
2412 | |
2413 | nm_i->available_nids++; | |
2414 | ||
346fe752 | 2415 | update_free_nid_bitmap(sbi, nid, true, false); |
4ac91242 | 2416 | |
b8559dc2 | 2417 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 CY |
2418 | |
2419 | if (need_free) | |
2420 | kmem_cache_free(free_nid_slab, i); | |
e05df3b1 JK |
2421 | } |
2422 | ||
4d57b86d | 2423 | int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) |
31696580 CY |
2424 | { |
2425 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2426 | struct free_nid *i, *next; | |
2427 | int nr = nr_shrink; | |
2428 | ||
9a4ffdf5 | 2429 | if (nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) |
ad4edb83 JK |
2430 | return 0; |
2431 | ||
31696580 CY |
2432 | if (!mutex_trylock(&nm_i->build_lock)) |
2433 | return 0; | |
2434 | ||
b8559dc2 | 2435 | spin_lock(&nm_i->nid_list_lock); |
9a4ffdf5 | 2436 | list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { |
b8559dc2 | 2437 | if (nr_shrink <= 0 || |
9a4ffdf5 | 2438 | nm_i->nid_cnt[FREE_NID] <= MAX_FREE_NIDS) |
31696580 | 2439 | break; |
b8559dc2 | 2440 | |
a0761f63 | 2441 | __remove_free_nid(sbi, i, FREE_NID); |
31696580 CY |
2442 | kmem_cache_free(free_nid_slab, i); |
2443 | nr_shrink--; | |
31696580 | 2444 | } |
b8559dc2 | 2445 | spin_unlock(&nm_i->nid_list_lock); |
31696580 CY |
2446 | mutex_unlock(&nm_i->build_lock); |
2447 | ||
2448 | return nr - nr_shrink; | |
2449 | } | |
2450 | ||
4d57b86d | 2451 | void f2fs_recover_inline_xattr(struct inode *inode, struct page *page) |
28cdce04 | 2452 | { |
28cdce04 CY |
2453 | void *src_addr, *dst_addr; |
2454 | size_t inline_size; | |
2455 | struct page *ipage; | |
2456 | struct f2fs_inode *ri; | |
2457 | ||
4d57b86d | 2458 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); |
9850cf4a | 2459 | f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); |
28cdce04 | 2460 | |
e3b4d43f | 2461 | ri = F2FS_INODE(page); |
1eca05aa YH |
2462 | if (ri->i_inline & F2FS_INLINE_XATTR) { |
2463 | set_inode_flag(inode, FI_INLINE_XATTR); | |
2464 | } else { | |
91942321 | 2465 | clear_inode_flag(inode, FI_INLINE_XATTR); |
e3b4d43f JK |
2466 | goto update_inode; |
2467 | } | |
2468 | ||
6afc662e CY |
2469 | dst_addr = inline_xattr_addr(inode, ipage); |
2470 | src_addr = inline_xattr_addr(inode, page); | |
28cdce04 CY |
2471 | inline_size = inline_xattr_size(inode); |
2472 | ||
fec1d657 | 2473 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
28cdce04 | 2474 | memcpy(dst_addr, src_addr, inline_size); |
e3b4d43f | 2475 | update_inode: |
4d57b86d | 2476 | f2fs_update_inode(inode, ipage); |
28cdce04 CY |
2477 | f2fs_put_page(ipage, 1); |
2478 | } | |
2479 | ||
4d57b86d | 2480 | int f2fs_recover_xattr_data(struct inode *inode, struct page *page) |
abb2366c | 2481 | { |
4081363f | 2482 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
abb2366c | 2483 | nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; |
87905682 YH |
2484 | nid_t new_xnid; |
2485 | struct dnode_of_data dn; | |
abb2366c | 2486 | struct node_info ni; |
d260081c | 2487 | struct page *xpage; |
7735730d | 2488 | int err; |
abb2366c | 2489 | |
abb2366c JK |
2490 | if (!prev_xnid) |
2491 | goto recover_xnid; | |
2492 | ||
d260081c | 2493 | /* 1: invalidate the previous xattr nid */ |
7735730d CY |
2494 | err = f2fs_get_node_info(sbi, prev_xnid, &ni); |
2495 | if (err) | |
2496 | return err; | |
2497 | ||
4d57b86d | 2498 | f2fs_invalidate_blocks(sbi, ni.blk_addr); |
000519f2 | 2499 | dec_valid_node_count(sbi, inode, false); |
479f40c4 | 2500 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
abb2366c JK |
2501 | |
2502 | recover_xnid: | |
d260081c | 2503 | /* 2: update xattr nid in inode */ |
4d57b86d | 2504 | if (!f2fs_alloc_nid(sbi, &new_xnid)) |
87905682 YH |
2505 | return -ENOSPC; |
2506 | ||
2507 | set_new_dnode(&dn, inode, NULL, NULL, new_xnid); | |
4d57b86d | 2508 | xpage = f2fs_new_node_page(&dn, XATTR_NODE_OFFSET); |
87905682 | 2509 | if (IS_ERR(xpage)) { |
4d57b86d | 2510 | f2fs_alloc_nid_failed(sbi, new_xnid); |
87905682 YH |
2511 | return PTR_ERR(xpage); |
2512 | } | |
2513 | ||
4d57b86d CY |
2514 | f2fs_alloc_nid_done(sbi, new_xnid); |
2515 | f2fs_update_inode_page(inode); | |
d260081c CY |
2516 | |
2517 | /* 3: update and set xattr node page dirty */ | |
87905682 | 2518 | memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE); |
abb2366c | 2519 | |
d260081c CY |
2520 | set_page_dirty(xpage); |
2521 | f2fs_put_page(xpage, 1); | |
abb2366c | 2522 | |
d260081c | 2523 | return 0; |
abb2366c JK |
2524 | } |
2525 | ||
4d57b86d | 2526 | int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) |
e05df3b1 | 2527 | { |
58bfaf44 | 2528 | struct f2fs_inode *src, *dst; |
e05df3b1 JK |
2529 | nid_t ino = ino_of_node(page); |
2530 | struct node_info old_ni, new_ni; | |
2531 | struct page *ipage; | |
7735730d | 2532 | int err; |
e05df3b1 | 2533 | |
7735730d CY |
2534 | err = f2fs_get_node_info(sbi, ino, &old_ni); |
2535 | if (err) | |
2536 | return err; | |
e8271fa3 JK |
2537 | |
2538 | if (unlikely(old_ni.blk_addr != NULL_ADDR)) | |
2539 | return -EINVAL; | |
e8ea9b3d | 2540 | retry: |
300e129c | 2541 | ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); |
e8ea9b3d JK |
2542 | if (!ipage) { |
2543 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
2544 | goto retry; | |
2545 | } | |
e05df3b1 | 2546 | |
e1c42045 | 2547 | /* Should not use this inode from free nid list */ |
b8559dc2 | 2548 | remove_free_nid(sbi, ino); |
e05df3b1 | 2549 | |
237c0790 JK |
2550 | if (!PageUptodate(ipage)) |
2551 | SetPageUptodate(ipage); | |
e05df3b1 | 2552 | fill_node_footer(ipage, ino, ino, 0, true); |
ef2a0071 | 2553 | set_cold_node(ipage, false); |
e05df3b1 | 2554 | |
58bfaf44 JK |
2555 | src = F2FS_INODE(page); |
2556 | dst = F2FS_INODE(ipage); | |
e05df3b1 | 2557 | |
58bfaf44 JK |
2558 | memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); |
2559 | dst->i_size = 0; | |
2560 | dst->i_blocks = cpu_to_le64(1); | |
2561 | dst->i_links = cpu_to_le32(1); | |
2562 | dst->i_xattr_nid = 0; | |
7a2af766 | 2563 | dst->i_inline = src->i_inline & (F2FS_INLINE_XATTR | F2FS_EXTRA_ATTR); |
5c57132e | 2564 | if (dst->i_inline & F2FS_EXTRA_ATTR) { |
7a2af766 | 2565 | dst->i_extra_isize = src->i_extra_isize; |
6afc662e | 2566 | |
7beb01f7 | 2567 | if (f2fs_sb_has_flexible_inline_xattr(sbi) && |
6afc662e CY |
2568 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
2569 | i_inline_xattr_size)) | |
2570 | dst->i_inline_xattr_size = src->i_inline_xattr_size; | |
2571 | ||
7beb01f7 | 2572 | if (f2fs_sb_has_project_quota(sbi) && |
5c57132e CY |
2573 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
2574 | i_projid)) | |
2575 | dst->i_projid = src->i_projid; | |
5cd1f387 | 2576 | |
7beb01f7 | 2577 | if (f2fs_sb_has_inode_crtime(sbi) && |
5cd1f387 CY |
2578 | F2FS_FITS_IN_INODE(src, le16_to_cpu(src->i_extra_isize), |
2579 | i_crtime_nsec)) { | |
2580 | dst->i_crtime = src->i_crtime; | |
2581 | dst->i_crtime_nsec = src->i_crtime_nsec; | |
2582 | } | |
5c57132e | 2583 | } |
e05df3b1 JK |
2584 | |
2585 | new_ni = old_ni; | |
2586 | new_ni.ino = ino; | |
2587 | ||
0abd675e | 2588 | if (unlikely(inc_valid_node_count(sbi, NULL, true))) |
65e5cd0a | 2589 | WARN_ON(1); |
479f40c4 | 2590 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
e05df3b1 | 2591 | inc_valid_inode_count(sbi); |
617deb8c | 2592 | set_page_dirty(ipage); |
e05df3b1 JK |
2593 | f2fs_put_page(ipage, 1); |
2594 | return 0; | |
2595 | } | |
2596 | ||
7735730d | 2597 | int f2fs_restore_node_summary(struct f2fs_sb_info *sbi, |
e05df3b1 JK |
2598 | unsigned int segno, struct f2fs_summary_block *sum) |
2599 | { | |
2600 | struct f2fs_node *rn; | |
2601 | struct f2fs_summary *sum_entry; | |
e05df3b1 | 2602 | block_t addr; |
9ecf4b80 | 2603 | int i, idx, last_offset, nrpages; |
e05df3b1 JK |
2604 | |
2605 | /* scan the node segment */ | |
2606 | last_offset = sbi->blocks_per_seg; | |
2607 | addr = START_BLOCK(sbi, segno); | |
2608 | sum_entry = &sum->entries[0]; | |
2609 | ||
9ecf4b80 | 2610 | for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { |
664ba972 | 2611 | nrpages = min(last_offset - i, BIO_MAX_PAGES); |
393ff91f | 2612 | |
e1c42045 | 2613 | /* readahead node pages */ |
4d57b86d | 2614 | f2fs_ra_meta_pages(sbi, addr, nrpages, META_POR, true); |
e05df3b1 | 2615 | |
9ecf4b80 | 2616 | for (idx = addr; idx < addr + nrpages; idx++) { |
4d57b86d | 2617 | struct page *page = f2fs_get_tmp_page(sbi, idx); |
9af0ff1c | 2618 | |
7735730d CY |
2619 | if (IS_ERR(page)) |
2620 | return PTR_ERR(page); | |
2621 | ||
9ecf4b80 CY |
2622 | rn = F2FS_NODE(page); |
2623 | sum_entry->nid = rn->footer.nid; | |
2624 | sum_entry->version = 0; | |
2625 | sum_entry->ofs_in_node = 0; | |
2626 | sum_entry++; | |
2627 | f2fs_put_page(page, 1); | |
9af0ff1c | 2628 | } |
bac4eef6 | 2629 | |
9ecf4b80 | 2630 | invalidate_mapping_pages(META_MAPPING(sbi), addr, |
bac4eef6 | 2631 | addr + nrpages); |
e05df3b1 | 2632 | } |
7735730d | 2633 | return 0; |
e05df3b1 JK |
2634 | } |
2635 | ||
aec71382 | 2636 | static void remove_nats_in_journal(struct f2fs_sb_info *sbi) |
e05df3b1 JK |
2637 | { |
2638 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2639 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2640 | struct f2fs_journal *journal = curseg->journal; |
e05df3b1 JK |
2641 | int i; |
2642 | ||
b7ad7512 | 2643 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 2644 | for (i = 0; i < nats_in_cursum(journal); i++) { |
e05df3b1 JK |
2645 | struct nat_entry *ne; |
2646 | struct f2fs_nat_entry raw_ne; | |
dfc08a12 | 2647 | nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); |
e05df3b1 | 2648 | |
dfc08a12 | 2649 | raw_ne = nat_in_journal(journal, i); |
9be32d72 | 2650 | |
e05df3b1 | 2651 | ne = __lookup_nat_cache(nm_i, nid); |
e05df3b1 | 2652 | if (!ne) { |
12f9ef37 YH |
2653 | ne = __alloc_nat_entry(nid, true); |
2654 | __init_nat_entry(nm_i, ne, &raw_ne, true); | |
e05df3b1 | 2655 | } |
04d47e67 CY |
2656 | |
2657 | /* | |
2658 | * if a free nat in journal has not been used after last | |
2659 | * checkpoint, we should remove it from available nids, | |
2660 | * since later we will add it again. | |
2661 | */ | |
2662 | if (!get_nat_flag(ne, IS_DIRTY) && | |
2663 | le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { | |
2664 | spin_lock(&nm_i->nid_list_lock); | |
2665 | nm_i->available_nids--; | |
2666 | spin_unlock(&nm_i->nid_list_lock); | |
2667 | } | |
2668 | ||
e05df3b1 | 2669 | __set_nat_cache_dirty(nm_i, ne); |
e05df3b1 | 2670 | } |
dfc08a12 | 2671 | update_nats_in_cursum(journal, -i); |
b7ad7512 | 2672 | up_write(&curseg->journal_rwsem); |
e05df3b1 JK |
2673 | } |
2674 | ||
309cc2b6 JK |
2675 | static void __adjust_nat_entry_set(struct nat_entry_set *nes, |
2676 | struct list_head *head, int max) | |
e05df3b1 | 2677 | { |
309cc2b6 | 2678 | struct nat_entry_set *cur; |
e05df3b1 | 2679 | |
309cc2b6 JK |
2680 | if (nes->entry_cnt >= max) |
2681 | goto add_out; | |
e05df3b1 | 2682 | |
309cc2b6 JK |
2683 | list_for_each_entry(cur, head, set_list) { |
2684 | if (cur->entry_cnt >= nes->entry_cnt) { | |
2685 | list_add(&nes->set_list, cur->set_list.prev); | |
2686 | return; | |
2687 | } | |
aec71382 | 2688 | } |
309cc2b6 JK |
2689 | add_out: |
2690 | list_add_tail(&nes->set_list, head); | |
2691 | } | |
e05df3b1 | 2692 | |
9f7e4a2c | 2693 | static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, |
22ad0b6a JK |
2694 | struct page *page) |
2695 | { | |
2696 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2697 | unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; | |
2698 | struct f2fs_nat_block *nat_blk = page_address(page); | |
2699 | int valid = 0; | |
37a0ab2a | 2700 | int i = 0; |
22ad0b6a JK |
2701 | |
2702 | if (!enabled_nat_bits(sbi, NULL)) | |
2703 | return; | |
2704 | ||
37a0ab2a FL |
2705 | if (nat_index == 0) { |
2706 | valid = 1; | |
2707 | i = 1; | |
2708 | } | |
2709 | for (; i < NAT_ENTRY_PER_BLOCK; i++) { | |
2710 | if (nat_blk->entries[i].block_addr != NULL_ADDR) | |
22ad0b6a JK |
2711 | valid++; |
2712 | } | |
2713 | if (valid == 0) { | |
23380b85 JK |
2714 | __set_bit_le(nat_index, nm_i->empty_nat_bits); |
2715 | __clear_bit_le(nat_index, nm_i->full_nat_bits); | |
22ad0b6a JK |
2716 | return; |
2717 | } | |
2718 | ||
23380b85 | 2719 | __clear_bit_le(nat_index, nm_i->empty_nat_bits); |
22ad0b6a | 2720 | if (valid == NAT_ENTRY_PER_BLOCK) |
23380b85 | 2721 | __set_bit_le(nat_index, nm_i->full_nat_bits); |
22ad0b6a | 2722 | else |
23380b85 | 2723 | __clear_bit_le(nat_index, nm_i->full_nat_bits); |
22ad0b6a JK |
2724 | } |
2725 | ||
edc55aaf | 2726 | static int __flush_nat_entry_set(struct f2fs_sb_info *sbi, |
22ad0b6a | 2727 | struct nat_entry_set *set, struct cp_control *cpc) |
309cc2b6 JK |
2728 | { |
2729 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2730 | struct f2fs_journal *journal = curseg->journal; |
309cc2b6 JK |
2731 | nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; |
2732 | bool to_journal = true; | |
2733 | struct f2fs_nat_block *nat_blk; | |
2734 | struct nat_entry *ne, *cur; | |
2735 | struct page *page = NULL; | |
e05df3b1 | 2736 | |
aec71382 CY |
2737 | /* |
2738 | * there are two steps to flush nat entries: | |
2739 | * #1, flush nat entries to journal in current hot data summary block. | |
2740 | * #2, flush nat entries to nat page. | |
2741 | */ | |
22ad0b6a JK |
2742 | if (enabled_nat_bits(sbi, cpc) || |
2743 | !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) | |
309cc2b6 JK |
2744 | to_journal = false; |
2745 | ||
2746 | if (to_journal) { | |
b7ad7512 | 2747 | down_write(&curseg->journal_rwsem); |
309cc2b6 JK |
2748 | } else { |
2749 | page = get_next_nat_page(sbi, start_nid); | |
edc55aaf JK |
2750 | if (IS_ERR(page)) |
2751 | return PTR_ERR(page); | |
2752 | ||
309cc2b6 JK |
2753 | nat_blk = page_address(page); |
2754 | f2fs_bug_on(sbi, !nat_blk); | |
2755 | } | |
aec71382 | 2756 | |
309cc2b6 JK |
2757 | /* flush dirty nats in nat entry set */ |
2758 | list_for_each_entry_safe(ne, cur, &set->entry_list, list) { | |
2759 | struct f2fs_nat_entry *raw_ne; | |
2760 | nid_t nid = nat_get_nid(ne); | |
2761 | int offset; | |
2762 | ||
febeca6d | 2763 | f2fs_bug_on(sbi, nat_get_blkaddr(ne) == NEW_ADDR); |
aec71382 CY |
2764 | |
2765 | if (to_journal) { | |
4d57b86d | 2766 | offset = f2fs_lookup_journal_in_cursum(journal, |
309cc2b6 JK |
2767 | NAT_JOURNAL, nid, 1); |
2768 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 CY |
2769 | raw_ne = &nat_in_journal(journal, offset); |
2770 | nid_in_journal(journal, offset) = cpu_to_le32(nid); | |
aec71382 | 2771 | } else { |
309cc2b6 | 2772 | raw_ne = &nat_blk->entries[nid - start_nid]; |
e05df3b1 | 2773 | } |
309cc2b6 | 2774 | raw_nat_from_node_info(raw_ne, &ne->ni); |
309cc2b6 | 2775 | nat_reset_flag(ne); |
0b28b71e | 2776 | __clear_nat_cache_dirty(NM_I(sbi), set, ne); |
04d47e67 | 2777 | if (nat_get_blkaddr(ne) == NULL_ADDR) { |
5921aaa1 | 2778 | add_free_nid(sbi, nid, false, true); |
4ac91242 CY |
2779 | } else { |
2780 | spin_lock(&NM_I(sbi)->nid_list_lock); | |
346fe752 | 2781 | update_free_nid_bitmap(sbi, nid, false, false); |
04d47e67 CY |
2782 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
2783 | } | |
309cc2b6 | 2784 | } |
e05df3b1 | 2785 | |
22ad0b6a | 2786 | if (to_journal) { |
b7ad7512 | 2787 | up_write(&curseg->journal_rwsem); |
22ad0b6a JK |
2788 | } else { |
2789 | __update_nat_bits(sbi, start_nid, page); | |
309cc2b6 | 2790 | f2fs_put_page(page, 1); |
22ad0b6a | 2791 | } |
aec71382 | 2792 | |
59c9081b YH |
2793 | /* Allow dirty nats by node block allocation in write_begin */ |
2794 | if (!set->entry_cnt) { | |
2795 | radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); | |
2796 | kmem_cache_free(nat_entry_set_slab, set); | |
2797 | } | |
edc55aaf | 2798 | return 0; |
309cc2b6 | 2799 | } |
aec71382 | 2800 | |
309cc2b6 JK |
2801 | /* |
2802 | * This function is called during the checkpointing process. | |
2803 | */ | |
edc55aaf | 2804 | int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
309cc2b6 JK |
2805 | { |
2806 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2807 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2808 | struct f2fs_journal *journal = curseg->journal; |
7aed0d45 | 2809 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
309cc2b6 JK |
2810 | struct nat_entry_set *set, *tmp; |
2811 | unsigned int found; | |
2812 | nid_t set_idx = 0; | |
2813 | LIST_HEAD(sets); | |
edc55aaf | 2814 | int err = 0; |
309cc2b6 | 2815 | |
7f2ecdd8 JK |
2816 | /* during unmount, let's flush nat_bits before checking dirty_nat_cnt */ |
2817 | if (enabled_nat_bits(sbi, cpc)) { | |
2818 | down_write(&nm_i->nat_tree_lock); | |
2819 | remove_nats_in_journal(sbi); | |
2820 | up_write(&nm_i->nat_tree_lock); | |
2821 | } | |
2822 | ||
20d047c8 | 2823 | if (!nm_i->dirty_nat_cnt) |
edc55aaf | 2824 | return 0; |
a5131193 | 2825 | |
b873b798 | 2826 | down_write(&nm_i->nat_tree_lock); |
a5131193 | 2827 | |
309cc2b6 JK |
2828 | /* |
2829 | * if there are no enough space in journal to store dirty nat | |
2830 | * entries, remove all entries from journal and merge them | |
2831 | * into nat entry set. | |
2832 | */ | |
900f7362 | 2833 | if (enabled_nat_bits(sbi, cpc) || |
22ad0b6a | 2834 | !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) |
309cc2b6 JK |
2835 | remove_nats_in_journal(sbi); |
2836 | ||
309cc2b6 | 2837 | while ((found = __gang_lookup_nat_set(nm_i, |
7aed0d45 | 2838 | set_idx, SETVEC_SIZE, setvec))) { |
309cc2b6 JK |
2839 | unsigned idx; |
2840 | set_idx = setvec[found - 1]->set + 1; | |
2841 | for (idx = 0; idx < found; idx++) | |
2842 | __adjust_nat_entry_set(setvec[idx], &sets, | |
dfc08a12 | 2843 | MAX_NAT_JENTRIES(journal)); |
e05df3b1 | 2844 | } |
aec71382 | 2845 | |
309cc2b6 | 2846 | /* flush dirty nats in nat entry set */ |
edc55aaf JK |
2847 | list_for_each_entry_safe(set, tmp, &sets, set_list) { |
2848 | err = __flush_nat_entry_set(sbi, set, cpc); | |
2849 | if (err) | |
2850 | break; | |
2851 | } | |
309cc2b6 | 2852 | |
b873b798 | 2853 | up_write(&nm_i->nat_tree_lock); |
59c9081b | 2854 | /* Allow dirty nats by node block allocation in write_begin */ |
edc55aaf JK |
2855 | |
2856 | return err; | |
e05df3b1 JK |
2857 | } |
2858 | ||
22ad0b6a JK |
2859 | static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) |
2860 | { | |
2861 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2862 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2863 | unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; | |
2864 | unsigned int i; | |
2865 | __u64 cp_ver = cur_cp_version(ckpt); | |
22ad0b6a JK |
2866 | block_t nat_bits_addr; |
2867 | ||
2868 | if (!enabled_nat_bits(sbi, NULL)) | |
2869 | return 0; | |
2870 | ||
df033caf | 2871 | nm_i->nat_bits_blocks = F2FS_BLK_ALIGN((nat_bits_bytes << 1) + 8); |
acbf054d CY |
2872 | nm_i->nat_bits = f2fs_kzalloc(sbi, |
2873 | nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, GFP_KERNEL); | |
22ad0b6a JK |
2874 | if (!nm_i->nat_bits) |
2875 | return -ENOMEM; | |
2876 | ||
2877 | nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - | |
2878 | nm_i->nat_bits_blocks; | |
2879 | for (i = 0; i < nm_i->nat_bits_blocks; i++) { | |
7735730d CY |
2880 | struct page *page; |
2881 | ||
2882 | page = f2fs_get_meta_page(sbi, nat_bits_addr++); | |
3b30eb19 | 2883 | if (IS_ERR(page)) |
7735730d | 2884 | return PTR_ERR(page); |
22ad0b6a JK |
2885 | |
2886 | memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), | |
2887 | page_address(page), F2FS_BLKSIZE); | |
2888 | f2fs_put_page(page, 1); | |
2889 | } | |
2890 | ||
ced2c7ea | 2891 | cp_ver |= (cur_cp_crc(ckpt) << 32); |
22ad0b6a JK |
2892 | if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { |
2893 | disable_nat_bits(sbi, true); | |
2894 | return 0; | |
2895 | } | |
2896 | ||
2897 | nm_i->full_nat_bits = nm_i->nat_bits + 8; | |
2898 | nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; | |
2899 | ||
2900 | f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); | |
2901 | return 0; | |
2902 | } | |
2903 | ||
bd80a4b9 | 2904 | static inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) |
7041d5d2 CY |
2905 | { |
2906 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2907 | unsigned int i = 0; | |
2908 | nid_t nid, last_nid; | |
2909 | ||
2910 | if (!enabled_nat_bits(sbi, NULL)) | |
2911 | return; | |
2912 | ||
2913 | for (i = 0; i < nm_i->nat_blocks; i++) { | |
2914 | i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); | |
2915 | if (i >= nm_i->nat_blocks) | |
2916 | break; | |
2917 | ||
2918 | __set_bit_le(i, nm_i->nat_block_bitmap); | |
2919 | ||
2920 | nid = i * NAT_ENTRY_PER_BLOCK; | |
f6986ede | 2921 | last_nid = nid + NAT_ENTRY_PER_BLOCK; |
7041d5d2 | 2922 | |
346fe752 | 2923 | spin_lock(&NM_I(sbi)->nid_list_lock); |
7041d5d2 | 2924 | for (; nid < last_nid; nid++) |
346fe752 CY |
2925 | update_free_nid_bitmap(sbi, nid, true, true); |
2926 | spin_unlock(&NM_I(sbi)->nid_list_lock); | |
7041d5d2 CY |
2927 | } |
2928 | ||
2929 | for (i = 0; i < nm_i->nat_blocks; i++) { | |
2930 | i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); | |
2931 | if (i >= nm_i->nat_blocks) | |
2932 | break; | |
2933 | ||
2934 | __set_bit_le(i, nm_i->nat_block_bitmap); | |
2935 | } | |
2936 | } | |
2937 | ||
e05df3b1 JK |
2938 | static int init_node_manager(struct f2fs_sb_info *sbi) |
2939 | { | |
2940 | struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); | |
2941 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2942 | unsigned char *version_bitmap; | |
22ad0b6a JK |
2943 | unsigned int nat_segs; |
2944 | int err; | |
e05df3b1 JK |
2945 | |
2946 | nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); | |
2947 | ||
2948 | /* segment_count_nat includes pair segment so divide to 2. */ | |
2949 | nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; | |
22ad0b6a JK |
2950 | nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); |
2951 | nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; | |
7ee0eeab | 2952 | |
b63da15e | 2953 | /* not used nids: 0, node, meta, (and root counted as valid node) */ |
04d47e67 | 2954 | nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - |
292c196a | 2955 | sbi->nquota_files - F2FS_RESERVED_NODE_NUM; |
9a4ffdf5 CY |
2956 | nm_i->nid_cnt[FREE_NID] = 0; |
2957 | nm_i->nid_cnt[PREALLOC_NID] = 0; | |
e05df3b1 | 2958 | nm_i->nat_cnt = 0; |
cdfc41c1 | 2959 | nm_i->ram_thresh = DEF_RAM_THRESHOLD; |
ea1a29a0 | 2960 | nm_i->ra_nid_pages = DEF_RA_NID_PAGES; |
2304cb0c | 2961 | nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; |
e05df3b1 | 2962 | |
8a7ed66a | 2963 | INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); |
9a4ffdf5 | 2964 | INIT_LIST_HEAD(&nm_i->free_nid_list); |
769ec6e5 JK |
2965 | INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); |
2966 | INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); | |
e05df3b1 | 2967 | INIT_LIST_HEAD(&nm_i->nat_entries); |
22969158 | 2968 | spin_lock_init(&nm_i->nat_list_lock); |
e05df3b1 JK |
2969 | |
2970 | mutex_init(&nm_i->build_lock); | |
b8559dc2 | 2971 | spin_lock_init(&nm_i->nid_list_lock); |
b873b798 | 2972 | init_rwsem(&nm_i->nat_tree_lock); |
e05df3b1 | 2973 | |
e05df3b1 | 2974 | nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); |
79b5793b | 2975 | nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); |
e05df3b1 JK |
2976 | version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); |
2977 | if (!version_bitmap) | |
2978 | return -EFAULT; | |
2979 | ||
79b5793b AG |
2980 | nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, |
2981 | GFP_KERNEL); | |
2982 | if (!nm_i->nat_bitmap) | |
2983 | return -ENOMEM; | |
599a09b2 | 2984 | |
22ad0b6a JK |
2985 | err = __get_nat_bitmaps(sbi); |
2986 | if (err) | |
2987 | return err; | |
2988 | ||
599a09b2 CY |
2989 | #ifdef CONFIG_F2FS_CHECK_FS |
2990 | nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, | |
2991 | GFP_KERNEL); | |
2992 | if (!nm_i->nat_bitmap_mir) | |
2993 | return -ENOMEM; | |
2994 | #endif | |
2995 | ||
e05df3b1 JK |
2996 | return 0; |
2997 | } | |
2998 | ||
9f7e4a2c | 2999 | static int init_free_nid_cache(struct f2fs_sb_info *sbi) |
4ac91242 CY |
3000 | { |
3001 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
bb1105e4 | 3002 | int i; |
4ac91242 | 3003 | |
026f0507 KC |
3004 | nm_i->free_nid_bitmap = |
3005 | f2fs_kzalloc(sbi, array_size(sizeof(unsigned char *), | |
3006 | nm_i->nat_blocks), | |
3007 | GFP_KERNEL); | |
4ac91242 CY |
3008 | if (!nm_i->free_nid_bitmap) |
3009 | return -ENOMEM; | |
3010 | ||
bb1105e4 JK |
3011 | for (i = 0; i < nm_i->nat_blocks; i++) { |
3012 | nm_i->free_nid_bitmap[i] = f2fs_kvzalloc(sbi, | |
e15d54d5 | 3013 | f2fs_bitmap_size(NAT_ENTRY_PER_BLOCK), GFP_KERNEL); |
68c43a23 | 3014 | if (!nm_i->free_nid_bitmap[i]) |
bb1105e4 JK |
3015 | return -ENOMEM; |
3016 | } | |
3017 | ||
628b3d14 | 3018 | nm_i->nat_block_bitmap = f2fs_kvzalloc(sbi, nm_i->nat_blocks / 8, |
4ac91242 CY |
3019 | GFP_KERNEL); |
3020 | if (!nm_i->nat_block_bitmap) | |
3021 | return -ENOMEM; | |
586d1492 | 3022 | |
9d2a789c KC |
3023 | nm_i->free_nid_count = |
3024 | f2fs_kvzalloc(sbi, array_size(sizeof(unsigned short), | |
3025 | nm_i->nat_blocks), | |
3026 | GFP_KERNEL); | |
586d1492 CY |
3027 | if (!nm_i->free_nid_count) |
3028 | return -ENOMEM; | |
4ac91242 CY |
3029 | return 0; |
3030 | } | |
3031 | ||
4d57b86d | 3032 | int f2fs_build_node_manager(struct f2fs_sb_info *sbi) |
e05df3b1 JK |
3033 | { |
3034 | int err; | |
3035 | ||
acbf054d CY |
3036 | sbi->nm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_nm_info), |
3037 | GFP_KERNEL); | |
e05df3b1 JK |
3038 | if (!sbi->nm_info) |
3039 | return -ENOMEM; | |
3040 | ||
3041 | err = init_node_manager(sbi); | |
3042 | if (err) | |
3043 | return err; | |
3044 | ||
4ac91242 CY |
3045 | err = init_free_nid_cache(sbi); |
3046 | if (err) | |
3047 | return err; | |
3048 | ||
7041d5d2 CY |
3049 | /* load free nid status from nat_bits table */ |
3050 | load_free_nid_bitmap(sbi); | |
3051 | ||
e2374015 | 3052 | return f2fs_build_free_nids(sbi, true, true); |
e05df3b1 JK |
3053 | } |
3054 | ||
4d57b86d | 3055 | void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi) |
e05df3b1 JK |
3056 | { |
3057 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
3058 | struct free_nid *i, *next_i; | |
3059 | struct nat_entry *natvec[NATVEC_SIZE]; | |
7aed0d45 | 3060 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
e05df3b1 JK |
3061 | nid_t nid = 0; |
3062 | unsigned int found; | |
3063 | ||
3064 | if (!nm_i) | |
3065 | return; | |
3066 | ||
3067 | /* destroy free nid list */ | |
b8559dc2 | 3068 | spin_lock(&nm_i->nid_list_lock); |
9a4ffdf5 | 3069 | list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { |
a0761f63 | 3070 | __remove_free_nid(sbi, i, FREE_NID); |
b8559dc2 | 3071 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 | 3072 | kmem_cache_free(free_nid_slab, i); |
b8559dc2 | 3073 | spin_lock(&nm_i->nid_list_lock); |
e05df3b1 | 3074 | } |
9a4ffdf5 CY |
3075 | f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID]); |
3076 | f2fs_bug_on(sbi, nm_i->nid_cnt[PREALLOC_NID]); | |
3077 | f2fs_bug_on(sbi, !list_empty(&nm_i->free_nid_list)); | |
b8559dc2 | 3078 | spin_unlock(&nm_i->nid_list_lock); |
e05df3b1 JK |
3079 | |
3080 | /* destroy nat cache */ | |
b873b798 | 3081 | down_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
3082 | while ((found = __gang_lookup_nat_cache(nm_i, |
3083 | nid, NATVEC_SIZE, natvec))) { | |
3084 | unsigned idx; | |
7aed0d45 | 3085 | |
b6ce391e | 3086 | nid = nat_get_nid(natvec[found - 1]) + 1; |
22969158 CY |
3087 | for (idx = 0; idx < found; idx++) { |
3088 | spin_lock(&nm_i->nat_list_lock); | |
3089 | list_del(&natvec[idx]->list); | |
3090 | spin_unlock(&nm_i->nat_list_lock); | |
3091 | ||
b6ce391e | 3092 | __del_from_nat_cache(nm_i, natvec[idx]); |
22969158 | 3093 | } |
e05df3b1 | 3094 | } |
9850cf4a | 3095 | f2fs_bug_on(sbi, nm_i->nat_cnt); |
7aed0d45 JK |
3096 | |
3097 | /* destroy nat set cache */ | |
3098 | nid = 0; | |
3099 | while ((found = __gang_lookup_nat_set(nm_i, | |
3100 | nid, SETVEC_SIZE, setvec))) { | |
3101 | unsigned idx; | |
3102 | ||
3103 | nid = setvec[found - 1]->set + 1; | |
3104 | for (idx = 0; idx < found; idx++) { | |
3105 | /* entry_cnt is not zero, when cp_error was occurred */ | |
3106 | f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); | |
3107 | radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); | |
3108 | kmem_cache_free(nat_entry_set_slab, setvec[idx]); | |
3109 | } | |
3110 | } | |
b873b798 | 3111 | up_write(&nm_i->nat_tree_lock); |
e05df3b1 | 3112 | |
4ac91242 | 3113 | kvfree(nm_i->nat_block_bitmap); |
bb1105e4 JK |
3114 | if (nm_i->free_nid_bitmap) { |
3115 | int i; | |
3116 | ||
3117 | for (i = 0; i < nm_i->nat_blocks; i++) | |
3118 | kvfree(nm_i->free_nid_bitmap[i]); | |
5222595d | 3119 | kvfree(nm_i->free_nid_bitmap); |
bb1105e4 | 3120 | } |
586d1492 | 3121 | kvfree(nm_i->free_nid_count); |
4ac91242 | 3122 | |
5222595d JK |
3123 | kvfree(nm_i->nat_bitmap); |
3124 | kvfree(nm_i->nat_bits); | |
599a09b2 | 3125 | #ifdef CONFIG_F2FS_CHECK_FS |
5222595d | 3126 | kvfree(nm_i->nat_bitmap_mir); |
599a09b2 | 3127 | #endif |
e05df3b1 | 3128 | sbi->nm_info = NULL; |
5222595d | 3129 | kvfree(nm_i); |
e05df3b1 JK |
3130 | } |
3131 | ||
4d57b86d | 3132 | int __init f2fs_create_node_manager_caches(void) |
e05df3b1 JK |
3133 | { |
3134 | nat_entry_slab = f2fs_kmem_cache_create("nat_entry", | |
e8512d2e | 3135 | sizeof(struct nat_entry)); |
e05df3b1 | 3136 | if (!nat_entry_slab) |
aec71382 | 3137 | goto fail; |
e05df3b1 JK |
3138 | |
3139 | free_nid_slab = f2fs_kmem_cache_create("free_nid", | |
e8512d2e | 3140 | sizeof(struct free_nid)); |
aec71382 | 3141 | if (!free_nid_slab) |
ce3e6d25 | 3142 | goto destroy_nat_entry; |
aec71382 CY |
3143 | |
3144 | nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", | |
3145 | sizeof(struct nat_entry_set)); | |
3146 | if (!nat_entry_set_slab) | |
ce3e6d25 | 3147 | goto destroy_free_nid; |
50fa53ec CY |
3148 | |
3149 | fsync_node_entry_slab = f2fs_kmem_cache_create("fsync_node_entry", | |
3150 | sizeof(struct fsync_node_entry)); | |
3151 | if (!fsync_node_entry_slab) | |
3152 | goto destroy_nat_entry_set; | |
e05df3b1 | 3153 | return 0; |
aec71382 | 3154 | |
50fa53ec CY |
3155 | destroy_nat_entry_set: |
3156 | kmem_cache_destroy(nat_entry_set_slab); | |
ce3e6d25 | 3157 | destroy_free_nid: |
aec71382 | 3158 | kmem_cache_destroy(free_nid_slab); |
ce3e6d25 | 3159 | destroy_nat_entry: |
aec71382 CY |
3160 | kmem_cache_destroy(nat_entry_slab); |
3161 | fail: | |
3162 | return -ENOMEM; | |
e05df3b1 JK |
3163 | } |
3164 | ||
4d57b86d | 3165 | void f2fs_destroy_node_manager_caches(void) |
e05df3b1 | 3166 | { |
50fa53ec | 3167 | kmem_cache_destroy(fsync_node_entry_slab); |
aec71382 | 3168 | kmem_cache_destroy(nat_entry_set_slab); |
e05df3b1 JK |
3169 | kmem_cache_destroy(free_nid_slab); |
3170 | kmem_cache_destroy(nat_entry_slab); | |
3171 | } |