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0a8165d7 | 1 | /* |
e05df3b1 JK |
2 | * fs/f2fs/node.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/fs.h> | |
12 | #include <linux/f2fs_fs.h> | |
13 | #include <linux/mpage.h> | |
14 | #include <linux/backing-dev.h> | |
15 | #include <linux/blkdev.h> | |
16 | #include <linux/pagevec.h> | |
17 | #include <linux/swap.h> | |
18 | ||
19 | #include "f2fs.h" | |
20 | #include "node.h" | |
21 | #include "segment.h" | |
9e4ded3f | 22 | #include "trace.h" |
51dd6249 | 23 | #include <trace/events/f2fs.h> |
e05df3b1 | 24 | |
f978f5a0 GZ |
25 | #define on_build_free_nids(nmi) mutex_is_locked(&nm_i->build_lock) |
26 | ||
e05df3b1 JK |
27 | static struct kmem_cache *nat_entry_slab; |
28 | static struct kmem_cache *free_nid_slab; | |
aec71382 | 29 | static struct kmem_cache *nat_entry_set_slab; |
e05df3b1 | 30 | |
6fb03f3a | 31 | bool available_free_memory(struct f2fs_sb_info *sbi, int type) |
cdfc41c1 | 32 | { |
6fb03f3a | 33 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
cdfc41c1 | 34 | struct sysinfo val; |
e5e7ea3c | 35 | unsigned long avail_ram; |
cdfc41c1 | 36 | unsigned long mem_size = 0; |
6fb03f3a | 37 | bool res = false; |
cdfc41c1 JK |
38 | |
39 | si_meminfo(&val); | |
e5e7ea3c JK |
40 | |
41 | /* only uses low memory */ | |
42 | avail_ram = val.totalram - val.totalhigh; | |
43 | ||
429511cd CY |
44 | /* |
45 | * give 25%, 25%, 50%, 50%, 50% memory for each components respectively | |
46 | */ | |
6fb03f3a | 47 | if (type == FREE_NIDS) { |
b8559dc2 CY |
48 | mem_size = (nm_i->nid_cnt[FREE_NID_LIST] * |
49 | sizeof(struct free_nid)) >> PAGE_SHIFT; | |
e5e7ea3c | 50 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); |
6fb03f3a | 51 | } else if (type == NAT_ENTRIES) { |
e5e7ea3c | 52 | mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> |
09cbfeaf | 53 | PAGE_SHIFT; |
e5e7ea3c | 54 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); |
e589c2c4 JK |
55 | if (excess_cached_nats(sbi)) |
56 | res = false; | |
a1257023 JK |
57 | } else if (type == DIRTY_DENTS) { |
58 | if (sbi->sb->s_bdi->wb.dirty_exceeded) | |
59 | return false; | |
60 | mem_size = get_pages(sbi, F2FS_DIRTY_DENTS); | |
61 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); | |
e5e7ea3c JK |
62 | } else if (type == INO_ENTRIES) { |
63 | int i; | |
64 | ||
e5e7ea3c | 65 | for (i = 0; i <= UPDATE_INO; i++) |
67298804 | 66 | mem_size += (sbi->im[i].ino_num * |
09cbfeaf | 67 | sizeof(struct ino_entry)) >> PAGE_SHIFT; |
e5e7ea3c | 68 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
429511cd | 69 | } else if (type == EXTENT_CACHE) { |
7441ccef JK |
70 | mem_size = (atomic_read(&sbi->total_ext_tree) * |
71 | sizeof(struct extent_tree) + | |
429511cd | 72 | atomic_read(&sbi->total_ext_node) * |
09cbfeaf | 73 | sizeof(struct extent_node)) >> PAGE_SHIFT; |
429511cd | 74 | res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1); |
1e84371f | 75 | } else { |
1663cae4 JK |
76 | if (!sbi->sb->s_bdi->wb.dirty_exceeded) |
77 | return true; | |
6fb03f3a JK |
78 | } |
79 | return res; | |
cdfc41c1 JK |
80 | } |
81 | ||
e05df3b1 JK |
82 | static void clear_node_page_dirty(struct page *page) |
83 | { | |
84 | struct address_space *mapping = page->mapping; | |
e05df3b1 JK |
85 | unsigned int long flags; |
86 | ||
87 | if (PageDirty(page)) { | |
88 | spin_lock_irqsave(&mapping->tree_lock, flags); | |
89 | radix_tree_tag_clear(&mapping->page_tree, | |
90 | page_index(page), | |
91 | PAGECACHE_TAG_DIRTY); | |
92 | spin_unlock_irqrestore(&mapping->tree_lock, flags); | |
93 | ||
94 | clear_page_dirty_for_io(page); | |
4081363f | 95 | dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); |
e05df3b1 JK |
96 | } |
97 | ClearPageUptodate(page); | |
98 | } | |
99 | ||
100 | static struct page *get_current_nat_page(struct f2fs_sb_info *sbi, nid_t nid) | |
101 | { | |
102 | pgoff_t index = current_nat_addr(sbi, nid); | |
103 | return get_meta_page(sbi, index); | |
104 | } | |
105 | ||
106 | static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) | |
107 | { | |
108 | struct page *src_page; | |
109 | struct page *dst_page; | |
110 | pgoff_t src_off; | |
111 | pgoff_t dst_off; | |
112 | void *src_addr; | |
113 | void *dst_addr; | |
114 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
115 | ||
116 | src_off = current_nat_addr(sbi, nid); | |
117 | dst_off = next_nat_addr(sbi, src_off); | |
118 | ||
119 | /* get current nat block page with lock */ | |
120 | src_page = get_meta_page(sbi, src_off); | |
e05df3b1 | 121 | dst_page = grab_meta_page(sbi, dst_off); |
9850cf4a | 122 | f2fs_bug_on(sbi, PageDirty(src_page)); |
e05df3b1 JK |
123 | |
124 | src_addr = page_address(src_page); | |
125 | dst_addr = page_address(dst_page); | |
09cbfeaf | 126 | memcpy(dst_addr, src_addr, PAGE_SIZE); |
e05df3b1 JK |
127 | set_page_dirty(dst_page); |
128 | f2fs_put_page(src_page, 1); | |
129 | ||
130 | set_to_next_nat(nm_i, nid); | |
131 | ||
132 | return dst_page; | |
133 | } | |
134 | ||
e05df3b1 JK |
135 | static struct nat_entry *__lookup_nat_cache(struct f2fs_nm_info *nm_i, nid_t n) |
136 | { | |
137 | return radix_tree_lookup(&nm_i->nat_root, n); | |
138 | } | |
139 | ||
140 | static unsigned int __gang_lookup_nat_cache(struct f2fs_nm_info *nm_i, | |
141 | nid_t start, unsigned int nr, struct nat_entry **ep) | |
142 | { | |
143 | return radix_tree_gang_lookup(&nm_i->nat_root, (void **)ep, start, nr); | |
144 | } | |
145 | ||
146 | static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) | |
147 | { | |
148 | list_del(&e->list); | |
149 | radix_tree_delete(&nm_i->nat_root, nat_get_nid(e)); | |
150 | nm_i->nat_cnt--; | |
151 | kmem_cache_free(nat_entry_slab, e); | |
152 | } | |
153 | ||
309cc2b6 JK |
154 | static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, |
155 | struct nat_entry *ne) | |
156 | { | |
157 | nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); | |
158 | struct nat_entry_set *head; | |
159 | ||
160 | if (get_nat_flag(ne, IS_DIRTY)) | |
161 | return; | |
9be32d72 | 162 | |
309cc2b6 JK |
163 | head = radix_tree_lookup(&nm_i->nat_set_root, set); |
164 | if (!head) { | |
80c54505 | 165 | head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_NOFS); |
309cc2b6 JK |
166 | |
167 | INIT_LIST_HEAD(&head->entry_list); | |
168 | INIT_LIST_HEAD(&head->set_list); | |
169 | head->set = set; | |
170 | head->entry_cnt = 0; | |
9be32d72 | 171 | f2fs_radix_tree_insert(&nm_i->nat_set_root, set, head); |
309cc2b6 JK |
172 | } |
173 | list_move_tail(&ne->list, &head->entry_list); | |
174 | nm_i->dirty_nat_cnt++; | |
175 | head->entry_cnt++; | |
176 | set_nat_flag(ne, IS_DIRTY, true); | |
177 | } | |
178 | ||
179 | static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, | |
180 | struct nat_entry *ne) | |
181 | { | |
20d047c8 | 182 | nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); |
309cc2b6 JK |
183 | struct nat_entry_set *head; |
184 | ||
185 | head = radix_tree_lookup(&nm_i->nat_set_root, set); | |
186 | if (head) { | |
187 | list_move_tail(&ne->list, &nm_i->nat_entries); | |
188 | set_nat_flag(ne, IS_DIRTY, false); | |
189 | head->entry_cnt--; | |
190 | nm_i->dirty_nat_cnt--; | |
191 | } | |
192 | } | |
193 | ||
194 | static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, | |
195 | nid_t start, unsigned int nr, struct nat_entry_set **ep) | |
196 | { | |
197 | return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, | |
198 | start, nr); | |
199 | } | |
200 | ||
2dcf51ab | 201 | int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 JK |
202 | { |
203 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
204 | struct nat_entry *e; | |
2dcf51ab | 205 | bool need = false; |
e05df3b1 | 206 | |
b873b798 | 207 | down_read(&nm_i->nat_tree_lock); |
e05df3b1 | 208 | e = __lookup_nat_cache(nm_i, nid); |
2dcf51ab JK |
209 | if (e) { |
210 | if (!get_nat_flag(e, IS_CHECKPOINTED) && | |
211 | !get_nat_flag(e, HAS_FSYNCED_INODE)) | |
212 | need = true; | |
213 | } | |
b873b798 | 214 | up_read(&nm_i->nat_tree_lock); |
2dcf51ab | 215 | return need; |
e05df3b1 JK |
216 | } |
217 | ||
2dcf51ab | 218 | bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) |
479f40c4 JK |
219 | { |
220 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
221 | struct nat_entry *e; | |
2dcf51ab | 222 | bool is_cp = true; |
479f40c4 | 223 | |
b873b798 | 224 | down_read(&nm_i->nat_tree_lock); |
2dcf51ab JK |
225 | e = __lookup_nat_cache(nm_i, nid); |
226 | if (e && !get_nat_flag(e, IS_CHECKPOINTED)) | |
227 | is_cp = false; | |
b873b798 | 228 | up_read(&nm_i->nat_tree_lock); |
2dcf51ab | 229 | return is_cp; |
479f40c4 JK |
230 | } |
231 | ||
88bd02c9 | 232 | bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) |
b6fe5873 JK |
233 | { |
234 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
235 | struct nat_entry *e; | |
88bd02c9 | 236 | bool need_update = true; |
b6fe5873 | 237 | |
b873b798 | 238 | down_read(&nm_i->nat_tree_lock); |
88bd02c9 JK |
239 | e = __lookup_nat_cache(nm_i, ino); |
240 | if (e && get_nat_flag(e, HAS_LAST_FSYNC) && | |
241 | (get_nat_flag(e, IS_CHECKPOINTED) || | |
242 | get_nat_flag(e, HAS_FSYNCED_INODE))) | |
243 | need_update = false; | |
b873b798 | 244 | up_read(&nm_i->nat_tree_lock); |
88bd02c9 | 245 | return need_update; |
b6fe5873 JK |
246 | } |
247 | ||
5c9e4184 CY |
248 | static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid, |
249 | bool no_fail) | |
e05df3b1 JK |
250 | { |
251 | struct nat_entry *new; | |
252 | ||
5c9e4184 CY |
253 | if (no_fail) { |
254 | new = f2fs_kmem_cache_alloc(nat_entry_slab, GFP_NOFS); | |
255 | f2fs_radix_tree_insert(&nm_i->nat_root, nid, new); | |
256 | } else { | |
257 | new = kmem_cache_alloc(nat_entry_slab, GFP_NOFS); | |
258 | if (!new) | |
259 | return NULL; | |
260 | if (radix_tree_insert(&nm_i->nat_root, nid, new)) { | |
261 | kmem_cache_free(nat_entry_slab, new); | |
262 | return NULL; | |
263 | } | |
264 | } | |
265 | ||
e05df3b1 JK |
266 | memset(new, 0, sizeof(struct nat_entry)); |
267 | nat_set_nid(new, nid); | |
88bd02c9 | 268 | nat_reset_flag(new); |
e05df3b1 JK |
269 | list_add_tail(&new->list, &nm_i->nat_entries); |
270 | nm_i->nat_cnt++; | |
271 | return new; | |
272 | } | |
273 | ||
1515aef0 | 274 | static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid, |
e05df3b1 JK |
275 | struct f2fs_nat_entry *ne) |
276 | { | |
1515aef0 | 277 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e05df3b1 | 278 | struct nat_entry *e; |
9be32d72 | 279 | |
e05df3b1 JK |
280 | e = __lookup_nat_cache(nm_i, nid); |
281 | if (!e) { | |
5c9e4184 CY |
282 | e = grab_nat_entry(nm_i, nid, false); |
283 | if (e) | |
284 | node_info_from_raw_nat(&e->ni, ne); | |
1515aef0 | 285 | } else { |
0c0b471e EB |
286 | f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) || |
287 | nat_get_blkaddr(e) != | |
288 | le32_to_cpu(ne->block_addr) || | |
1515aef0 | 289 | nat_get_version(e) != ne->version); |
e05df3b1 | 290 | } |
e05df3b1 JK |
291 | } |
292 | ||
293 | static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, | |
479f40c4 | 294 | block_t new_blkaddr, bool fsync_done) |
e05df3b1 JK |
295 | { |
296 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
297 | struct nat_entry *e; | |
9be32d72 | 298 | |
b873b798 | 299 | down_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
300 | e = __lookup_nat_cache(nm_i, ni->nid); |
301 | if (!e) { | |
5c9e4184 | 302 | e = grab_nat_entry(nm_i, ni->nid, true); |
5c27f4ee | 303 | copy_node_info(&e->ni, ni); |
9850cf4a | 304 | f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); |
e05df3b1 JK |
305 | } else if (new_blkaddr == NEW_ADDR) { |
306 | /* | |
307 | * when nid is reallocated, | |
308 | * previous nat entry can be remained in nat cache. | |
309 | * So, reinitialize it with new information. | |
310 | */ | |
5c27f4ee | 311 | copy_node_info(&e->ni, ni); |
9850cf4a | 312 | f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); |
e05df3b1 JK |
313 | } |
314 | ||
e05df3b1 | 315 | /* sanity check */ |
9850cf4a JK |
316 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); |
317 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && | |
e05df3b1 | 318 | new_blkaddr == NULL_ADDR); |
9850cf4a | 319 | f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && |
e05df3b1 | 320 | new_blkaddr == NEW_ADDR); |
9850cf4a | 321 | f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && |
e05df3b1 JK |
322 | nat_get_blkaddr(e) != NULL_ADDR && |
323 | new_blkaddr == NEW_ADDR); | |
324 | ||
e1c42045 | 325 | /* increment version no as node is removed */ |
e05df3b1 JK |
326 | if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { |
327 | unsigned char version = nat_get_version(e); | |
328 | nat_set_version(e, inc_node_version(version)); | |
26834466 JK |
329 | |
330 | /* in order to reuse the nid */ | |
331 | if (nm_i->next_scan_nid > ni->nid) | |
332 | nm_i->next_scan_nid = ni->nid; | |
e05df3b1 JK |
333 | } |
334 | ||
335 | /* change address */ | |
336 | nat_set_blkaddr(e, new_blkaddr); | |
88bd02c9 JK |
337 | if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) |
338 | set_nat_flag(e, IS_CHECKPOINTED, false); | |
e05df3b1 | 339 | __set_nat_cache_dirty(nm_i, e); |
479f40c4 JK |
340 | |
341 | /* update fsync_mark if its inode nat entry is still alive */ | |
d5b692b7 CY |
342 | if (ni->nid != ni->ino) |
343 | e = __lookup_nat_cache(nm_i, ni->ino); | |
88bd02c9 JK |
344 | if (e) { |
345 | if (fsync_done && ni->nid == ni->ino) | |
346 | set_nat_flag(e, HAS_FSYNCED_INODE, true); | |
347 | set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); | |
348 | } | |
b873b798 | 349 | up_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
350 | } |
351 | ||
4660f9c0 | 352 | int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) |
e05df3b1 JK |
353 | { |
354 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
1b38dc8e | 355 | int nr = nr_shrink; |
e05df3b1 | 356 | |
b873b798 JK |
357 | if (!down_write_trylock(&nm_i->nat_tree_lock)) |
358 | return 0; | |
e05df3b1 | 359 | |
e05df3b1 JK |
360 | while (nr_shrink && !list_empty(&nm_i->nat_entries)) { |
361 | struct nat_entry *ne; | |
362 | ne = list_first_entry(&nm_i->nat_entries, | |
363 | struct nat_entry, list); | |
364 | __del_from_nat_cache(nm_i, ne); | |
365 | nr_shrink--; | |
366 | } | |
b873b798 | 367 | up_write(&nm_i->nat_tree_lock); |
1b38dc8e | 368 | return nr - nr_shrink; |
e05df3b1 JK |
369 | } |
370 | ||
0a8165d7 | 371 | /* |
e1c42045 | 372 | * This function always returns success |
e05df3b1 JK |
373 | */ |
374 | void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) | |
375 | { | |
376 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
377 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 378 | struct f2fs_journal *journal = curseg->journal; |
e05df3b1 JK |
379 | nid_t start_nid = START_NID(nid); |
380 | struct f2fs_nat_block *nat_blk; | |
381 | struct page *page = NULL; | |
382 | struct f2fs_nat_entry ne; | |
383 | struct nat_entry *e; | |
384 | int i; | |
385 | ||
386 | ni->nid = nid; | |
387 | ||
388 | /* Check nat cache */ | |
b873b798 | 389 | down_read(&nm_i->nat_tree_lock); |
e05df3b1 JK |
390 | e = __lookup_nat_cache(nm_i, nid); |
391 | if (e) { | |
392 | ni->ino = nat_get_ino(e); | |
393 | ni->blk_addr = nat_get_blkaddr(e); | |
394 | ni->version = nat_get_version(e); | |
b873b798 | 395 | up_read(&nm_i->nat_tree_lock); |
e05df3b1 | 396 | return; |
1515aef0 | 397 | } |
e05df3b1 | 398 | |
3547ea96 JK |
399 | memset(&ne, 0, sizeof(struct f2fs_nat_entry)); |
400 | ||
e05df3b1 | 401 | /* Check current segment summary */ |
b7ad7512 | 402 | down_read(&curseg->journal_rwsem); |
dfc08a12 | 403 | i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0); |
e05df3b1 | 404 | if (i >= 0) { |
dfc08a12 | 405 | ne = nat_in_journal(journal, i); |
e05df3b1 JK |
406 | node_info_from_raw_nat(ni, &ne); |
407 | } | |
b7ad7512 | 408 | up_read(&curseg->journal_rwsem); |
e05df3b1 JK |
409 | if (i >= 0) |
410 | goto cache; | |
411 | ||
412 | /* Fill node_info from nat page */ | |
413 | page = get_current_nat_page(sbi, start_nid); | |
414 | nat_blk = (struct f2fs_nat_block *)page_address(page); | |
415 | ne = nat_blk->entries[nid - start_nid]; | |
416 | node_info_from_raw_nat(ni, &ne); | |
417 | f2fs_put_page(page, 1); | |
418 | cache: | |
b873b798 | 419 | up_read(&nm_i->nat_tree_lock); |
e05df3b1 | 420 | /* cache nat entry */ |
b873b798 | 421 | down_write(&nm_i->nat_tree_lock); |
1515aef0 | 422 | cache_nat_entry(sbi, nid, &ne); |
b873b798 | 423 | up_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
424 | } |
425 | ||
79344efb JK |
426 | /* |
427 | * readahead MAX_RA_NODE number of node pages. | |
428 | */ | |
429 | static void ra_node_pages(struct page *parent, int start, int n) | |
430 | { | |
431 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); | |
432 | struct blk_plug plug; | |
433 | int i, end; | |
434 | nid_t nid; | |
435 | ||
436 | blk_start_plug(&plug); | |
437 | ||
438 | /* Then, try readahead for siblings of the desired node */ | |
439 | end = start + n; | |
440 | end = min(end, NIDS_PER_BLOCK); | |
441 | for (i = start; i < end; i++) { | |
442 | nid = get_nid(parent, i, false); | |
443 | ra_node_page(sbi, nid); | |
444 | } | |
445 | ||
446 | blk_finish_plug(&plug); | |
447 | } | |
448 | ||
3cf45747 CY |
449 | pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs) |
450 | { | |
451 | const long direct_index = ADDRS_PER_INODE(dn->inode); | |
452 | const long direct_blks = ADDRS_PER_BLOCK; | |
453 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; | |
454 | unsigned int skipped_unit = ADDRS_PER_BLOCK; | |
455 | int cur_level = dn->cur_level; | |
456 | int max_level = dn->max_level; | |
457 | pgoff_t base = 0; | |
458 | ||
459 | if (!dn->max_level) | |
460 | return pgofs + 1; | |
461 | ||
462 | while (max_level-- > cur_level) | |
463 | skipped_unit *= NIDS_PER_BLOCK; | |
464 | ||
465 | switch (dn->max_level) { | |
466 | case 3: | |
467 | base += 2 * indirect_blks; | |
468 | case 2: | |
469 | base += 2 * direct_blks; | |
470 | case 1: | |
471 | base += direct_index; | |
472 | break; | |
473 | default: | |
474 | f2fs_bug_on(F2FS_I_SB(dn->inode), 1); | |
475 | } | |
476 | ||
477 | return ((pgofs - base) / skipped_unit + 1) * skipped_unit + base; | |
478 | } | |
479 | ||
0a8165d7 | 480 | /* |
e05df3b1 JK |
481 | * The maximum depth is four. |
482 | * Offset[0] will have raw inode offset. | |
483 | */ | |
81ca7350 | 484 | static int get_node_path(struct inode *inode, long block, |
de93653f | 485 | int offset[4], unsigned int noffset[4]) |
e05df3b1 | 486 | { |
81ca7350 | 487 | const long direct_index = ADDRS_PER_INODE(inode); |
e05df3b1 JK |
488 | const long direct_blks = ADDRS_PER_BLOCK; |
489 | const long dptrs_per_blk = NIDS_PER_BLOCK; | |
490 | const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK; | |
491 | const long dindirect_blks = indirect_blks * NIDS_PER_BLOCK; | |
492 | int n = 0; | |
493 | int level = 0; | |
494 | ||
495 | noffset[0] = 0; | |
496 | ||
497 | if (block < direct_index) { | |
25c0a6e5 | 498 | offset[n] = block; |
e05df3b1 JK |
499 | goto got; |
500 | } | |
501 | block -= direct_index; | |
502 | if (block < direct_blks) { | |
503 | offset[n++] = NODE_DIR1_BLOCK; | |
504 | noffset[n] = 1; | |
25c0a6e5 | 505 | offset[n] = block; |
e05df3b1 JK |
506 | level = 1; |
507 | goto got; | |
508 | } | |
509 | block -= direct_blks; | |
510 | if (block < direct_blks) { | |
511 | offset[n++] = NODE_DIR2_BLOCK; | |
512 | noffset[n] = 2; | |
25c0a6e5 | 513 | offset[n] = block; |
e05df3b1 JK |
514 | level = 1; |
515 | goto got; | |
516 | } | |
517 | block -= direct_blks; | |
518 | if (block < indirect_blks) { | |
519 | offset[n++] = NODE_IND1_BLOCK; | |
520 | noffset[n] = 3; | |
521 | offset[n++] = block / direct_blks; | |
522 | noffset[n] = 4 + offset[n - 1]; | |
25c0a6e5 | 523 | offset[n] = block % direct_blks; |
e05df3b1 JK |
524 | level = 2; |
525 | goto got; | |
526 | } | |
527 | block -= indirect_blks; | |
528 | if (block < indirect_blks) { | |
529 | offset[n++] = NODE_IND2_BLOCK; | |
530 | noffset[n] = 4 + dptrs_per_blk; | |
531 | offset[n++] = block / direct_blks; | |
532 | noffset[n] = 5 + dptrs_per_blk + offset[n - 1]; | |
25c0a6e5 | 533 | offset[n] = block % direct_blks; |
e05df3b1 JK |
534 | level = 2; |
535 | goto got; | |
536 | } | |
537 | block -= indirect_blks; | |
538 | if (block < dindirect_blks) { | |
539 | offset[n++] = NODE_DIND_BLOCK; | |
540 | noffset[n] = 5 + (dptrs_per_blk * 2); | |
541 | offset[n++] = block / indirect_blks; | |
542 | noffset[n] = 6 + (dptrs_per_blk * 2) + | |
543 | offset[n - 1] * (dptrs_per_blk + 1); | |
544 | offset[n++] = (block / direct_blks) % dptrs_per_blk; | |
545 | noffset[n] = 7 + (dptrs_per_blk * 2) + | |
546 | offset[n - 2] * (dptrs_per_blk + 1) + | |
547 | offset[n - 1]; | |
25c0a6e5 | 548 | offset[n] = block % direct_blks; |
e05df3b1 JK |
549 | level = 3; |
550 | goto got; | |
551 | } else { | |
552 | BUG(); | |
553 | } | |
554 | got: | |
555 | return level; | |
556 | } | |
557 | ||
558 | /* | |
559 | * Caller should call f2fs_put_dnode(dn). | |
4f4124d0 CY |
560 | * Also, it should grab and release a rwsem by calling f2fs_lock_op() and |
561 | * f2fs_unlock_op() only if ro is not set RDONLY_NODE. | |
39936837 | 562 | * In the case of RDONLY_NODE, we don't need to care about mutex. |
e05df3b1 | 563 | */ |
266e97a8 | 564 | int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) |
e05df3b1 | 565 | { |
4081363f | 566 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
e05df3b1 | 567 | struct page *npage[4]; |
f1a3b98e | 568 | struct page *parent = NULL; |
e05df3b1 JK |
569 | int offset[4]; |
570 | unsigned int noffset[4]; | |
571 | nid_t nids[4]; | |
3cf45747 | 572 | int level, i = 0; |
e05df3b1 JK |
573 | int err = 0; |
574 | ||
81ca7350 | 575 | level = get_node_path(dn->inode, index, offset, noffset); |
e05df3b1 JK |
576 | |
577 | nids[0] = dn->inode->i_ino; | |
1646cfac | 578 | npage[0] = dn->inode_page; |
e05df3b1 | 579 | |
1646cfac JK |
580 | if (!npage[0]) { |
581 | npage[0] = get_node_page(sbi, nids[0]); | |
582 | if (IS_ERR(npage[0])) | |
583 | return PTR_ERR(npage[0]); | |
584 | } | |
f1a3b98e JK |
585 | |
586 | /* if inline_data is set, should not report any block indices */ | |
587 | if (f2fs_has_inline_data(dn->inode) && index) { | |
76629165 | 588 | err = -ENOENT; |
f1a3b98e JK |
589 | f2fs_put_page(npage[0], 1); |
590 | goto release_out; | |
591 | } | |
592 | ||
e05df3b1 | 593 | parent = npage[0]; |
52c2db3f CL |
594 | if (level != 0) |
595 | nids[1] = get_nid(parent, offset[0], true); | |
e05df3b1 JK |
596 | dn->inode_page = npage[0]; |
597 | dn->inode_page_locked = true; | |
598 | ||
599 | /* get indirect or direct nodes */ | |
600 | for (i = 1; i <= level; i++) { | |
601 | bool done = false; | |
602 | ||
266e97a8 | 603 | if (!nids[i] && mode == ALLOC_NODE) { |
e05df3b1 JK |
604 | /* alloc new node */ |
605 | if (!alloc_nid(sbi, &(nids[i]))) { | |
e05df3b1 JK |
606 | err = -ENOSPC; |
607 | goto release_pages; | |
608 | } | |
609 | ||
610 | dn->nid = nids[i]; | |
8ae8f162 | 611 | npage[i] = new_node_page(dn, noffset[i], NULL); |
e05df3b1 JK |
612 | if (IS_ERR(npage[i])) { |
613 | alloc_nid_failed(sbi, nids[i]); | |
e05df3b1 JK |
614 | err = PTR_ERR(npage[i]); |
615 | goto release_pages; | |
616 | } | |
617 | ||
618 | set_nid(parent, offset[i - 1], nids[i], i == 1); | |
619 | alloc_nid_done(sbi, nids[i]); | |
e05df3b1 | 620 | done = true; |
266e97a8 | 621 | } else if (mode == LOOKUP_NODE_RA && i == level && level > 1) { |
e05df3b1 JK |
622 | npage[i] = get_node_page_ra(parent, offset[i - 1]); |
623 | if (IS_ERR(npage[i])) { | |
624 | err = PTR_ERR(npage[i]); | |
625 | goto release_pages; | |
626 | } | |
627 | done = true; | |
628 | } | |
629 | if (i == 1) { | |
630 | dn->inode_page_locked = false; | |
631 | unlock_page(parent); | |
632 | } else { | |
633 | f2fs_put_page(parent, 1); | |
634 | } | |
635 | ||
636 | if (!done) { | |
637 | npage[i] = get_node_page(sbi, nids[i]); | |
638 | if (IS_ERR(npage[i])) { | |
639 | err = PTR_ERR(npage[i]); | |
640 | f2fs_put_page(npage[0], 0); | |
641 | goto release_out; | |
642 | } | |
643 | } | |
644 | if (i < level) { | |
645 | parent = npage[i]; | |
646 | nids[i + 1] = get_nid(parent, offset[i], false); | |
647 | } | |
648 | } | |
649 | dn->nid = nids[level]; | |
650 | dn->ofs_in_node = offset[level]; | |
651 | dn->node_page = npage[level]; | |
652 | dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); | |
653 | return 0; | |
654 | ||
655 | release_pages: | |
656 | f2fs_put_page(parent, 1); | |
657 | if (i > 1) | |
658 | f2fs_put_page(npage[0], 0); | |
659 | release_out: | |
660 | dn->inode_page = NULL; | |
661 | dn->node_page = NULL; | |
3cf45747 CY |
662 | if (err == -ENOENT) { |
663 | dn->cur_level = i; | |
664 | dn->max_level = level; | |
0a2aa8fb | 665 | dn->ofs_in_node = offset[level]; |
3cf45747 | 666 | } |
e05df3b1 JK |
667 | return err; |
668 | } | |
669 | ||
670 | static void truncate_node(struct dnode_of_data *dn) | |
671 | { | |
4081363f | 672 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
e05df3b1 JK |
673 | struct node_info ni; |
674 | ||
675 | get_node_info(sbi, dn->nid, &ni); | |
71e9fec5 | 676 | if (dn->inode->i_blocks == 0) { |
9850cf4a | 677 | f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); |
71e9fec5 JK |
678 | goto invalidate; |
679 | } | |
9850cf4a | 680 | f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); |
e05df3b1 | 681 | |
e05df3b1 | 682 | /* Deallocate node address */ |
71e9fec5 | 683 | invalidate_blocks(sbi, ni.blk_addr); |
ef86d709 | 684 | dec_valid_node_count(sbi, dn->inode); |
479f40c4 | 685 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
e05df3b1 JK |
686 | |
687 | if (dn->nid == dn->inode->i_ino) { | |
688 | remove_orphan_inode(sbi, dn->nid); | |
689 | dec_valid_inode_count(sbi); | |
0f18b462 | 690 | f2fs_inode_synced(dn->inode); |
e05df3b1 | 691 | } |
71e9fec5 | 692 | invalidate: |
e05df3b1 | 693 | clear_node_page_dirty(dn->node_page); |
caf0047e | 694 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
e05df3b1 JK |
695 | |
696 | f2fs_put_page(dn->node_page, 1); | |
bf39c00a JK |
697 | |
698 | invalidate_mapping_pages(NODE_MAPPING(sbi), | |
699 | dn->node_page->index, dn->node_page->index); | |
700 | ||
e05df3b1 | 701 | dn->node_page = NULL; |
51dd6249 | 702 | trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr); |
e05df3b1 JK |
703 | } |
704 | ||
705 | static int truncate_dnode(struct dnode_of_data *dn) | |
706 | { | |
e05df3b1 JK |
707 | struct page *page; |
708 | ||
709 | if (dn->nid == 0) | |
710 | return 1; | |
711 | ||
712 | /* get direct node */ | |
4081363f | 713 | page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
e05df3b1 JK |
714 | if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) |
715 | return 1; | |
716 | else if (IS_ERR(page)) | |
717 | return PTR_ERR(page); | |
718 | ||
719 | /* Make dnode_of_data for parameter */ | |
720 | dn->node_page = page; | |
721 | dn->ofs_in_node = 0; | |
722 | truncate_data_blocks(dn); | |
723 | truncate_node(dn); | |
724 | return 1; | |
725 | } | |
726 | ||
727 | static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, | |
728 | int ofs, int depth) | |
729 | { | |
e05df3b1 JK |
730 | struct dnode_of_data rdn = *dn; |
731 | struct page *page; | |
732 | struct f2fs_node *rn; | |
733 | nid_t child_nid; | |
734 | unsigned int child_nofs; | |
735 | int freed = 0; | |
736 | int i, ret; | |
737 | ||
738 | if (dn->nid == 0) | |
739 | return NIDS_PER_BLOCK + 1; | |
740 | ||
51dd6249 NJ |
741 | trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); |
742 | ||
4081363f | 743 | page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); |
51dd6249 NJ |
744 | if (IS_ERR(page)) { |
745 | trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); | |
e05df3b1 | 746 | return PTR_ERR(page); |
51dd6249 | 747 | } |
e05df3b1 | 748 | |
79344efb JK |
749 | ra_node_pages(page, ofs, NIDS_PER_BLOCK); |
750 | ||
45590710 | 751 | rn = F2FS_NODE(page); |
e05df3b1 JK |
752 | if (depth < 3) { |
753 | for (i = ofs; i < NIDS_PER_BLOCK; i++, freed++) { | |
754 | child_nid = le32_to_cpu(rn->in.nid[i]); | |
755 | if (child_nid == 0) | |
756 | continue; | |
757 | rdn.nid = child_nid; | |
758 | ret = truncate_dnode(&rdn); | |
759 | if (ret < 0) | |
760 | goto out_err; | |
12719ae1 JK |
761 | if (set_nid(page, i, 0, false)) |
762 | dn->node_changed = true; | |
e05df3b1 JK |
763 | } |
764 | } else { | |
765 | child_nofs = nofs + ofs * (NIDS_PER_BLOCK + 1) + 1; | |
766 | for (i = ofs; i < NIDS_PER_BLOCK; i++) { | |
767 | child_nid = le32_to_cpu(rn->in.nid[i]); | |
768 | if (child_nid == 0) { | |
769 | child_nofs += NIDS_PER_BLOCK + 1; | |
770 | continue; | |
771 | } | |
772 | rdn.nid = child_nid; | |
773 | ret = truncate_nodes(&rdn, child_nofs, 0, depth - 1); | |
774 | if (ret == (NIDS_PER_BLOCK + 1)) { | |
12719ae1 JK |
775 | if (set_nid(page, i, 0, false)) |
776 | dn->node_changed = true; | |
e05df3b1 JK |
777 | child_nofs += ret; |
778 | } else if (ret < 0 && ret != -ENOENT) { | |
779 | goto out_err; | |
780 | } | |
781 | } | |
782 | freed = child_nofs; | |
783 | } | |
784 | ||
785 | if (!ofs) { | |
786 | /* remove current indirect node */ | |
787 | dn->node_page = page; | |
788 | truncate_node(dn); | |
789 | freed++; | |
790 | } else { | |
791 | f2fs_put_page(page, 1); | |
792 | } | |
51dd6249 | 793 | trace_f2fs_truncate_nodes_exit(dn->inode, freed); |
e05df3b1 JK |
794 | return freed; |
795 | ||
796 | out_err: | |
797 | f2fs_put_page(page, 1); | |
51dd6249 | 798 | trace_f2fs_truncate_nodes_exit(dn->inode, ret); |
e05df3b1 JK |
799 | return ret; |
800 | } | |
801 | ||
802 | static int truncate_partial_nodes(struct dnode_of_data *dn, | |
803 | struct f2fs_inode *ri, int *offset, int depth) | |
804 | { | |
e05df3b1 JK |
805 | struct page *pages[2]; |
806 | nid_t nid[3]; | |
807 | nid_t child_nid; | |
808 | int err = 0; | |
809 | int i; | |
810 | int idx = depth - 2; | |
811 | ||
812 | nid[0] = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); | |
813 | if (!nid[0]) | |
814 | return 0; | |
815 | ||
816 | /* get indirect nodes in the path */ | |
a225dca3 | 817 | for (i = 0; i < idx + 1; i++) { |
e1c42045 | 818 | /* reference count'll be increased */ |
4081363f | 819 | pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); |
e05df3b1 | 820 | if (IS_ERR(pages[i])) { |
e05df3b1 | 821 | err = PTR_ERR(pages[i]); |
a225dca3 | 822 | idx = i - 1; |
e05df3b1 JK |
823 | goto fail; |
824 | } | |
825 | nid[i + 1] = get_nid(pages[i], offset[i + 1], false); | |
826 | } | |
827 | ||
79344efb JK |
828 | ra_node_pages(pages[idx], offset[idx + 1], NIDS_PER_BLOCK); |
829 | ||
e05df3b1 | 830 | /* free direct nodes linked to a partial indirect node */ |
a225dca3 | 831 | for (i = offset[idx + 1]; i < NIDS_PER_BLOCK; i++) { |
e05df3b1 JK |
832 | child_nid = get_nid(pages[idx], i, false); |
833 | if (!child_nid) | |
834 | continue; | |
835 | dn->nid = child_nid; | |
836 | err = truncate_dnode(dn); | |
837 | if (err < 0) | |
838 | goto fail; | |
12719ae1 JK |
839 | if (set_nid(pages[idx], i, 0, false)) |
840 | dn->node_changed = true; | |
e05df3b1 JK |
841 | } |
842 | ||
a225dca3 | 843 | if (offset[idx + 1] == 0) { |
e05df3b1 JK |
844 | dn->node_page = pages[idx]; |
845 | dn->nid = nid[idx]; | |
846 | truncate_node(dn); | |
847 | } else { | |
848 | f2fs_put_page(pages[idx], 1); | |
849 | } | |
850 | offset[idx]++; | |
a225dca3 | 851 | offset[idx + 1] = 0; |
852 | idx--; | |
e05df3b1 | 853 | fail: |
a225dca3 | 854 | for (i = idx; i >= 0; i--) |
e05df3b1 | 855 | f2fs_put_page(pages[i], 1); |
51dd6249 NJ |
856 | |
857 | trace_f2fs_truncate_partial_nodes(dn->inode, nid, depth, err); | |
858 | ||
e05df3b1 JK |
859 | return err; |
860 | } | |
861 | ||
0a8165d7 | 862 | /* |
e05df3b1 JK |
863 | * All the block addresses of data and nodes should be nullified. |
864 | */ | |
865 | int truncate_inode_blocks(struct inode *inode, pgoff_t from) | |
866 | { | |
4081363f | 867 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
e05df3b1 JK |
868 | int err = 0, cont = 1; |
869 | int level, offset[4], noffset[4]; | |
7dd690c8 | 870 | unsigned int nofs = 0; |
58bfaf44 | 871 | struct f2fs_inode *ri; |
e05df3b1 JK |
872 | struct dnode_of_data dn; |
873 | struct page *page; | |
874 | ||
51dd6249 NJ |
875 | trace_f2fs_truncate_inode_blocks_enter(inode, from); |
876 | ||
81ca7350 | 877 | level = get_node_path(inode, from, offset, noffset); |
ff373558 | 878 | |
e05df3b1 | 879 | page = get_node_page(sbi, inode->i_ino); |
51dd6249 NJ |
880 | if (IS_ERR(page)) { |
881 | trace_f2fs_truncate_inode_blocks_exit(inode, PTR_ERR(page)); | |
e05df3b1 | 882 | return PTR_ERR(page); |
51dd6249 | 883 | } |
e05df3b1 JK |
884 | |
885 | set_new_dnode(&dn, inode, page, NULL, 0); | |
886 | unlock_page(page); | |
887 | ||
58bfaf44 | 888 | ri = F2FS_INODE(page); |
e05df3b1 JK |
889 | switch (level) { |
890 | case 0: | |
891 | case 1: | |
892 | nofs = noffset[1]; | |
893 | break; | |
894 | case 2: | |
895 | nofs = noffset[1]; | |
896 | if (!offset[level - 1]) | |
897 | goto skip_partial; | |
58bfaf44 | 898 | err = truncate_partial_nodes(&dn, ri, offset, level); |
e05df3b1 JK |
899 | if (err < 0 && err != -ENOENT) |
900 | goto fail; | |
901 | nofs += 1 + NIDS_PER_BLOCK; | |
902 | break; | |
903 | case 3: | |
904 | nofs = 5 + 2 * NIDS_PER_BLOCK; | |
905 | if (!offset[level - 1]) | |
906 | goto skip_partial; | |
58bfaf44 | 907 | err = truncate_partial_nodes(&dn, ri, offset, level); |
e05df3b1 JK |
908 | if (err < 0 && err != -ENOENT) |
909 | goto fail; | |
910 | break; | |
911 | default: | |
912 | BUG(); | |
913 | } | |
914 | ||
915 | skip_partial: | |
916 | while (cont) { | |
58bfaf44 | 917 | dn.nid = le32_to_cpu(ri->i_nid[offset[0] - NODE_DIR1_BLOCK]); |
e05df3b1 JK |
918 | switch (offset[0]) { |
919 | case NODE_DIR1_BLOCK: | |
920 | case NODE_DIR2_BLOCK: | |
921 | err = truncate_dnode(&dn); | |
922 | break; | |
923 | ||
924 | case NODE_IND1_BLOCK: | |
925 | case NODE_IND2_BLOCK: | |
926 | err = truncate_nodes(&dn, nofs, offset[1], 2); | |
927 | break; | |
928 | ||
929 | case NODE_DIND_BLOCK: | |
930 | err = truncate_nodes(&dn, nofs, offset[1], 3); | |
931 | cont = 0; | |
932 | break; | |
933 | ||
934 | default: | |
935 | BUG(); | |
936 | } | |
937 | if (err < 0 && err != -ENOENT) | |
938 | goto fail; | |
939 | if (offset[1] == 0 && | |
58bfaf44 | 940 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK]) { |
e05df3b1 | 941 | lock_page(page); |
ff373558 | 942 | BUG_ON(page->mapping != NODE_MAPPING(sbi)); |
fec1d657 | 943 | f2fs_wait_on_page_writeback(page, NODE, true); |
58bfaf44 | 944 | ri->i_nid[offset[0] - NODE_DIR1_BLOCK] = 0; |
e05df3b1 JK |
945 | set_page_dirty(page); |
946 | unlock_page(page); | |
947 | } | |
948 | offset[1] = 0; | |
949 | offset[0]++; | |
950 | nofs += err; | |
951 | } | |
952 | fail: | |
953 | f2fs_put_page(page, 0); | |
51dd6249 | 954 | trace_f2fs_truncate_inode_blocks_exit(inode, err); |
e05df3b1 JK |
955 | return err > 0 ? 0 : err; |
956 | } | |
957 | ||
4f16fb0f JK |
958 | int truncate_xattr_node(struct inode *inode, struct page *page) |
959 | { | |
4081363f | 960 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
4f16fb0f JK |
961 | nid_t nid = F2FS_I(inode)->i_xattr_nid; |
962 | struct dnode_of_data dn; | |
963 | struct page *npage; | |
964 | ||
965 | if (!nid) | |
966 | return 0; | |
967 | ||
968 | npage = get_node_page(sbi, nid); | |
969 | if (IS_ERR(npage)) | |
970 | return PTR_ERR(npage); | |
971 | ||
205b9822 | 972 | f2fs_i_xnid_write(inode, 0); |
65985d93 | 973 | |
4f16fb0f JK |
974 | set_new_dnode(&dn, inode, page, npage, nid); |
975 | ||
976 | if (page) | |
01d2d1aa | 977 | dn.inode_page_locked = true; |
4f16fb0f JK |
978 | truncate_node(&dn); |
979 | return 0; | |
980 | } | |
981 | ||
39936837 | 982 | /* |
4f4124d0 CY |
983 | * Caller should grab and release a rwsem by calling f2fs_lock_op() and |
984 | * f2fs_unlock_op(). | |
39936837 | 985 | */ |
13ec7297 | 986 | int remove_inode_page(struct inode *inode) |
e05df3b1 | 987 | { |
e05df3b1 | 988 | struct dnode_of_data dn; |
13ec7297 | 989 | int err; |
e05df3b1 | 990 | |
c2e69583 | 991 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); |
13ec7297 CY |
992 | err = get_dnode_of_data(&dn, 0, LOOKUP_NODE); |
993 | if (err) | |
994 | return err; | |
e05df3b1 | 995 | |
13ec7297 CY |
996 | err = truncate_xattr_node(inode, dn.inode_page); |
997 | if (err) { | |
c2e69583 | 998 | f2fs_put_dnode(&dn); |
13ec7297 | 999 | return err; |
e05df3b1 | 1000 | } |
c2e69583 JK |
1001 | |
1002 | /* remove potential inline_data blocks */ | |
1003 | if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || | |
1004 | S_ISLNK(inode->i_mode)) | |
1005 | truncate_data_blocks_range(&dn, 1); | |
1006 | ||
e1c42045 | 1007 | /* 0 is possible, after f2fs_new_inode() has failed */ |
9850cf4a JK |
1008 | f2fs_bug_on(F2FS_I_SB(inode), |
1009 | inode->i_blocks != 0 && inode->i_blocks != 1); | |
c2e69583 JK |
1010 | |
1011 | /* will put inode & node pages */ | |
71e9fec5 | 1012 | truncate_node(&dn); |
13ec7297 | 1013 | return 0; |
e05df3b1 JK |
1014 | } |
1015 | ||
a014e037 | 1016 | struct page *new_inode_page(struct inode *inode) |
e05df3b1 | 1017 | { |
e05df3b1 JK |
1018 | struct dnode_of_data dn; |
1019 | ||
1020 | /* allocate inode page for new inode */ | |
1021 | set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); | |
44a83ff6 JK |
1022 | |
1023 | /* caller should f2fs_put_page(page, 1); */ | |
8ae8f162 | 1024 | return new_node_page(&dn, 0, NULL); |
e05df3b1 JK |
1025 | } |
1026 | ||
8ae8f162 JK |
1027 | struct page *new_node_page(struct dnode_of_data *dn, |
1028 | unsigned int ofs, struct page *ipage) | |
e05df3b1 | 1029 | { |
4081363f | 1030 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
25cc5d3b | 1031 | struct node_info new_ni; |
e05df3b1 JK |
1032 | struct page *page; |
1033 | int err; | |
1034 | ||
91942321 | 1035 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
e05df3b1 JK |
1036 | return ERR_PTR(-EPERM); |
1037 | ||
300e129c | 1038 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); |
e05df3b1 JK |
1039 | if (!page) |
1040 | return ERR_PTR(-ENOMEM); | |
1041 | ||
6bacf52f | 1042 | if (unlikely(!inc_valid_node_count(sbi, dn->inode))) { |
9c02740c JK |
1043 | err = -ENOSPC; |
1044 | goto fail; | |
1045 | } | |
25cc5d3b JK |
1046 | #ifdef CONFIG_F2FS_CHECK_FS |
1047 | get_node_info(sbi, dn->nid, &new_ni); | |
1048 | f2fs_bug_on(sbi, new_ni.blk_addr != NULL_ADDR); | |
1049 | #endif | |
1050 | new_ni.nid = dn->nid; | |
e05df3b1 | 1051 | new_ni.ino = dn->inode->i_ino; |
25cc5d3b JK |
1052 | new_ni.blk_addr = NULL_ADDR; |
1053 | new_ni.flag = 0; | |
1054 | new_ni.version = 0; | |
479f40c4 | 1055 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
9c02740c | 1056 | |
fec1d657 | 1057 | f2fs_wait_on_page_writeback(page, NODE, true); |
9c02740c | 1058 | fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); |
398b1ac5 | 1059 | set_cold_node(dn->inode, page); |
237c0790 JK |
1060 | if (!PageUptodate(page)) |
1061 | SetPageUptodate(page); | |
12719ae1 JK |
1062 | if (set_page_dirty(page)) |
1063 | dn->node_changed = true; | |
e05df3b1 | 1064 | |
4bc8e9bc | 1065 | if (f2fs_has_xattr_block(ofs)) |
205b9822 | 1066 | f2fs_i_xnid_write(dn->inode, dn->nid); |
479bd73a | 1067 | |
e05df3b1 JK |
1068 | if (ofs == 0) |
1069 | inc_valid_inode_count(sbi); | |
e05df3b1 JK |
1070 | return page; |
1071 | ||
1072 | fail: | |
71e9fec5 | 1073 | clear_node_page_dirty(page); |
e05df3b1 JK |
1074 | f2fs_put_page(page, 1); |
1075 | return ERR_PTR(err); | |
1076 | } | |
1077 | ||
56ae674c JK |
1078 | /* |
1079 | * Caller should do after getting the following values. | |
1080 | * 0: f2fs_put_page(page, 0) | |
86531d6b | 1081 | * LOCKED_PAGE or error: f2fs_put_page(page, 1) |
56ae674c | 1082 | */ |
04d328de | 1083 | static int read_node_page(struct page *page, int op_flags) |
e05df3b1 | 1084 | { |
4081363f | 1085 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
e05df3b1 | 1086 | struct node_info ni; |
cf04e8eb | 1087 | struct f2fs_io_info fio = { |
05ca3632 | 1088 | .sbi = sbi, |
cf04e8eb | 1089 | .type = NODE, |
04d328de MC |
1090 | .op = REQ_OP_READ, |
1091 | .op_flags = op_flags, | |
05ca3632 | 1092 | .page = page, |
4375a336 | 1093 | .encrypted_page = NULL, |
cf04e8eb | 1094 | }; |
e05df3b1 | 1095 | |
3bdad3c7 JK |
1096 | if (PageUptodate(page)) |
1097 | return LOCKED_PAGE; | |
1098 | ||
e05df3b1 JK |
1099 | get_node_info(sbi, page->index, &ni); |
1100 | ||
6bacf52f | 1101 | if (unlikely(ni.blk_addr == NULL_ADDR)) { |
2bca1e23 | 1102 | ClearPageUptodate(page); |
e05df3b1 | 1103 | return -ENOENT; |
393ff91f JK |
1104 | } |
1105 | ||
7a9d7548 | 1106 | fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; |
05ca3632 | 1107 | return f2fs_submit_page_bio(&fio); |
e05df3b1 JK |
1108 | } |
1109 | ||
0a8165d7 | 1110 | /* |
e05df3b1 JK |
1111 | * Readahead a node page |
1112 | */ | |
1113 | void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid) | |
1114 | { | |
e05df3b1 | 1115 | struct page *apage; |
56ae674c | 1116 | int err; |
e05df3b1 | 1117 | |
e8458725 CY |
1118 | if (!nid) |
1119 | return; | |
1120 | f2fs_bug_on(sbi, check_nid_range(sbi, nid)); | |
1121 | ||
999270de FL |
1122 | rcu_read_lock(); |
1123 | apage = radix_tree_lookup(&NODE_MAPPING(sbi)->page_tree, nid); | |
1124 | rcu_read_unlock(); | |
1125 | if (apage) | |
393ff91f | 1126 | return; |
e05df3b1 | 1127 | |
300e129c | 1128 | apage = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
e05df3b1 JK |
1129 | if (!apage) |
1130 | return; | |
1131 | ||
70246286 | 1132 | err = read_node_page(apage, REQ_RAHEAD); |
86531d6b | 1133 | f2fs_put_page(apage, err ? 1 : 0); |
e05df3b1 JK |
1134 | } |
1135 | ||
17a0ee55 | 1136 | static struct page *__get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid, |
0e022ea8 | 1137 | struct page *parent, int start) |
e05df3b1 | 1138 | { |
e05df3b1 | 1139 | struct page *page; |
0e022ea8 | 1140 | int err; |
e05df3b1 | 1141 | |
e05df3b1 JK |
1142 | if (!nid) |
1143 | return ERR_PTR(-ENOENT); | |
e8458725 | 1144 | f2fs_bug_on(sbi, check_nid_range(sbi, nid)); |
afcb7ca0 | 1145 | repeat: |
300e129c | 1146 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), nid, false); |
e05df3b1 JK |
1147 | if (!page) |
1148 | return ERR_PTR(-ENOMEM); | |
1149 | ||
70fd7614 | 1150 | err = read_node_page(page, 0); |
86531d6b JK |
1151 | if (err < 0) { |
1152 | f2fs_put_page(page, 1); | |
e05df3b1 | 1153 | return ERR_PTR(err); |
86531d6b | 1154 | } else if (err == LOCKED_PAGE) { |
56ae674c | 1155 | goto page_hit; |
86531d6b | 1156 | } |
e05df3b1 | 1157 | |
0e022ea8 | 1158 | if (parent) |
79344efb | 1159 | ra_node_pages(parent, start + 1, MAX_RA_NODE); |
c718379b | 1160 | |
e05df3b1 | 1161 | lock_page(page); |
0e022ea8 | 1162 | |
4ef51a8f | 1163 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
afcb7ca0 JK |
1164 | f2fs_put_page(page, 1); |
1165 | goto repeat; | |
1166 | } | |
1563ac75 CY |
1167 | |
1168 | if (unlikely(!PageUptodate(page))) | |
1169 | goto out_err; | |
e0f56cb4 | 1170 | page_hit: |
0c9df7fb YS |
1171 | if(unlikely(nid != nid_of_node(page))) { |
1172 | f2fs_bug_on(sbi, 1); | |
1173 | ClearPageUptodate(page); | |
1174 | out_err: | |
1175 | f2fs_put_page(page, 1); | |
1176 | return ERR_PTR(-EIO); | |
1177 | } | |
e05df3b1 JK |
1178 | return page; |
1179 | } | |
1180 | ||
0e022ea8 CY |
1181 | struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid) |
1182 | { | |
1183 | return __get_node_page(sbi, nid, NULL, 0); | |
1184 | } | |
1185 | ||
1186 | struct page *get_node_page_ra(struct page *parent, int start) | |
1187 | { | |
1188 | struct f2fs_sb_info *sbi = F2FS_P_SB(parent); | |
1189 | nid_t nid = get_nid(parent, start, false); | |
1190 | ||
1191 | return __get_node_page(sbi, nid, parent, start); | |
1192 | } | |
1193 | ||
2049d4fc JK |
1194 | static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) |
1195 | { | |
1196 | struct inode *inode; | |
1197 | struct page *page; | |
0f3311a8 | 1198 | int ret; |
2049d4fc JK |
1199 | |
1200 | /* should flush inline_data before evict_inode */ | |
1201 | inode = ilookup(sbi->sb, ino); | |
1202 | if (!inode) | |
1203 | return; | |
1204 | ||
4a6de50d | 1205 | page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0); |
2049d4fc JK |
1206 | if (!page) |
1207 | goto iput_out; | |
1208 | ||
1209 | if (!PageUptodate(page)) | |
1210 | goto page_out; | |
1211 | ||
1212 | if (!PageDirty(page)) | |
1213 | goto page_out; | |
1214 | ||
1215 | if (!clear_page_dirty_for_io(page)) | |
1216 | goto page_out; | |
1217 | ||
0f3311a8 CY |
1218 | ret = f2fs_write_inline_data(inode, page); |
1219 | inode_dec_dirty_pages(inode); | |
933439c8 | 1220 | remove_dirty_inode(inode); |
0f3311a8 | 1221 | if (ret) |
2049d4fc JK |
1222 | set_page_dirty(page); |
1223 | page_out: | |
4a6de50d | 1224 | f2fs_put_page(page, 1); |
2049d4fc JK |
1225 | iput_out: |
1226 | iput(inode); | |
1227 | } | |
1228 | ||
da011cc0 CY |
1229 | void move_node_page(struct page *node_page, int gc_type) |
1230 | { | |
1231 | if (gc_type == FG_GC) { | |
1232 | struct f2fs_sb_info *sbi = F2FS_P_SB(node_page); | |
1233 | struct writeback_control wbc = { | |
1234 | .sync_mode = WB_SYNC_ALL, | |
1235 | .nr_to_write = 1, | |
1236 | .for_reclaim = 0, | |
1237 | }; | |
1238 | ||
1239 | set_page_dirty(node_page); | |
1240 | f2fs_wait_on_page_writeback(node_page, NODE, true); | |
1241 | ||
1242 | f2fs_bug_on(sbi, PageWriteback(node_page)); | |
1243 | if (!clear_page_dirty_for_io(node_page)) | |
1244 | goto out_page; | |
1245 | ||
1246 | if (NODE_MAPPING(sbi)->a_ops->writepage(node_page, &wbc)) | |
1247 | unlock_page(node_page); | |
1248 | goto release_page; | |
1249 | } else { | |
1250 | /* set page dirty and write it */ | |
1251 | if (!PageWriteback(node_page)) | |
1252 | set_page_dirty(node_page); | |
1253 | } | |
1254 | out_page: | |
1255 | unlock_page(node_page); | |
1256 | release_page: | |
1257 | f2fs_put_page(node_page, 0); | |
1258 | } | |
1259 | ||
608514de JK |
1260 | static struct page *last_fsync_dnode(struct f2fs_sb_info *sbi, nid_t ino) |
1261 | { | |
1262 | pgoff_t index, end; | |
1263 | struct pagevec pvec; | |
1264 | struct page *last_page = NULL; | |
1265 | ||
1266 | pagevec_init(&pvec, 0); | |
1267 | index = 0; | |
1268 | end = ULONG_MAX; | |
1269 | ||
1270 | while (index <= end) { | |
1271 | int i, nr_pages; | |
1272 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, | |
1273 | PAGECACHE_TAG_DIRTY, | |
1274 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
1275 | if (nr_pages == 0) | |
1276 | break; | |
1277 | ||
1278 | for (i = 0; i < nr_pages; i++) { | |
1279 | struct page *page = pvec.pages[i]; | |
1280 | ||
1281 | if (unlikely(f2fs_cp_error(sbi))) { | |
1282 | f2fs_put_page(last_page, 0); | |
1283 | pagevec_release(&pvec); | |
1284 | return ERR_PTR(-EIO); | |
1285 | } | |
1286 | ||
1287 | if (!IS_DNODE(page) || !is_cold_node(page)) | |
1288 | continue; | |
1289 | if (ino_of_node(page) != ino) | |
1290 | continue; | |
1291 | ||
1292 | lock_page(page); | |
1293 | ||
1294 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { | |
1295 | continue_unlock: | |
1296 | unlock_page(page); | |
1297 | continue; | |
1298 | } | |
1299 | if (ino_of_node(page) != ino) | |
1300 | goto continue_unlock; | |
1301 | ||
1302 | if (!PageDirty(page)) { | |
1303 | /* someone wrote it for us */ | |
1304 | goto continue_unlock; | |
1305 | } | |
1306 | ||
1307 | if (last_page) | |
1308 | f2fs_put_page(last_page, 0); | |
1309 | ||
1310 | get_page(page); | |
1311 | last_page = page; | |
1312 | unlock_page(page); | |
1313 | } | |
1314 | pagevec_release(&pvec); | |
1315 | cond_resched(); | |
1316 | } | |
1317 | return last_page; | |
1318 | } | |
1319 | ||
d68f735b | 1320 | static int __write_node_page(struct page *page, bool atomic, bool *submitted, |
faa24895 JK |
1321 | struct writeback_control *wbc) |
1322 | { | |
1323 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); | |
1324 | nid_t nid; | |
1325 | struct node_info ni; | |
1326 | struct f2fs_io_info fio = { | |
1327 | .sbi = sbi, | |
1328 | .type = NODE, | |
1329 | .op = REQ_OP_WRITE, | |
1330 | .op_flags = wbc_to_write_flags(wbc), | |
1331 | .page = page, | |
1332 | .encrypted_page = NULL, | |
d68f735b | 1333 | .submitted = false, |
faa24895 JK |
1334 | }; |
1335 | ||
1336 | trace_f2fs_writepage(page, NODE); | |
1337 | ||
1338 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
1339 | goto redirty_out; | |
1340 | if (unlikely(f2fs_cp_error(sbi))) | |
1341 | goto redirty_out; | |
1342 | ||
1343 | /* get old block addr of this node page */ | |
1344 | nid = nid_of_node(page); | |
1345 | f2fs_bug_on(sbi, page->index != nid); | |
1346 | ||
1347 | if (wbc->for_reclaim) { | |
1348 | if (!down_read_trylock(&sbi->node_write)) | |
1349 | goto redirty_out; | |
1350 | } else { | |
1351 | down_read(&sbi->node_write); | |
1352 | } | |
1353 | ||
1354 | get_node_info(sbi, nid, &ni); | |
1355 | ||
1356 | /* This page is already truncated */ | |
1357 | if (unlikely(ni.blk_addr == NULL_ADDR)) { | |
1358 | ClearPageUptodate(page); | |
1359 | dec_page_count(sbi, F2FS_DIRTY_NODES); | |
1360 | up_read(&sbi->node_write); | |
1361 | unlock_page(page); | |
1362 | return 0; | |
1363 | } | |
1364 | ||
e7c75ab0 JK |
1365 | if (atomic && !test_opt(sbi, NOBARRIER)) |
1366 | fio.op_flags |= REQ_PREFLUSH | REQ_FUA; | |
1367 | ||
faa24895 JK |
1368 | set_page_writeback(page); |
1369 | fio.old_blkaddr = ni.blk_addr; | |
1370 | write_node_page(nid, &fio); | |
1371 | set_node_addr(sbi, &ni, fio.new_blkaddr, is_fsync_dnode(page)); | |
1372 | dec_page_count(sbi, F2FS_DIRTY_NODES); | |
1373 | up_read(&sbi->node_write); | |
1374 | ||
d68f735b | 1375 | if (wbc->for_reclaim) { |
942fd319 JK |
1376 | f2fs_submit_merged_bio_cond(sbi, page->mapping->host, 0, |
1377 | page->index, NODE, WRITE); | |
d68f735b JK |
1378 | submitted = NULL; |
1379 | } | |
faa24895 JK |
1380 | |
1381 | unlock_page(page); | |
1382 | ||
d68f735b | 1383 | if (unlikely(f2fs_cp_error(sbi))) { |
faa24895 | 1384 | f2fs_submit_merged_bio(sbi, NODE, WRITE); |
d68f735b JK |
1385 | submitted = NULL; |
1386 | } | |
1387 | if (submitted) | |
1388 | *submitted = fio.submitted; | |
faa24895 JK |
1389 | |
1390 | return 0; | |
1391 | ||
1392 | redirty_out: | |
1393 | redirty_page_for_writepage(wbc, page); | |
1394 | return AOP_WRITEPAGE_ACTIVATE; | |
1395 | } | |
1396 | ||
1397 | static int f2fs_write_node_page(struct page *page, | |
1398 | struct writeback_control *wbc) | |
1399 | { | |
d68f735b | 1400 | return __write_node_page(page, false, NULL, wbc); |
faa24895 JK |
1401 | } |
1402 | ||
26de9b11 | 1403 | int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, |
608514de | 1404 | struct writeback_control *wbc, bool atomic) |
e05df3b1 | 1405 | { |
e05df3b1 | 1406 | pgoff_t index, end; |
942fd319 | 1407 | pgoff_t last_idx = ULONG_MAX; |
e05df3b1 | 1408 | struct pagevec pvec; |
c267ec15 | 1409 | int ret = 0; |
608514de JK |
1410 | struct page *last_page = NULL; |
1411 | bool marked = false; | |
26de9b11 | 1412 | nid_t ino = inode->i_ino; |
52681375 | 1413 | |
608514de JK |
1414 | if (atomic) { |
1415 | last_page = last_fsync_dnode(sbi, ino); | |
1416 | if (IS_ERR_OR_NULL(last_page)) | |
1417 | return PTR_ERR_OR_ZERO(last_page); | |
1418 | } | |
1419 | retry: | |
52681375 JK |
1420 | pagevec_init(&pvec, 0); |
1421 | index = 0; | |
1422 | end = ULONG_MAX; | |
1423 | ||
1424 | while (index <= end) { | |
1425 | int i, nr_pages; | |
1426 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, | |
1427 | PAGECACHE_TAG_DIRTY, | |
1428 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
1429 | if (nr_pages == 0) | |
1430 | break; | |
1431 | ||
1432 | for (i = 0; i < nr_pages; i++) { | |
1433 | struct page *page = pvec.pages[i]; | |
d68f735b | 1434 | bool submitted = false; |
52681375 JK |
1435 | |
1436 | if (unlikely(f2fs_cp_error(sbi))) { | |
608514de | 1437 | f2fs_put_page(last_page, 0); |
52681375 | 1438 | pagevec_release(&pvec); |
9de69279 CY |
1439 | ret = -EIO; |
1440 | goto out; | |
52681375 JK |
1441 | } |
1442 | ||
1443 | if (!IS_DNODE(page) || !is_cold_node(page)) | |
1444 | continue; | |
1445 | if (ino_of_node(page) != ino) | |
1446 | continue; | |
1447 | ||
1448 | lock_page(page); | |
1449 | ||
1450 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { | |
1451 | continue_unlock: | |
1452 | unlock_page(page); | |
1453 | continue; | |
1454 | } | |
1455 | if (ino_of_node(page) != ino) | |
1456 | goto continue_unlock; | |
1457 | ||
608514de | 1458 | if (!PageDirty(page) && page != last_page) { |
52681375 JK |
1459 | /* someone wrote it for us */ |
1460 | goto continue_unlock; | |
1461 | } | |
1462 | ||
1463 | f2fs_wait_on_page_writeback(page, NODE, true); | |
1464 | BUG_ON(PageWriteback(page)); | |
52681375 | 1465 | |
608514de JK |
1466 | if (!atomic || page == last_page) { |
1467 | set_fsync_mark(page, 1); | |
26de9b11 JK |
1468 | if (IS_INODE(page)) { |
1469 | if (is_inode_flag_set(inode, | |
1470 | FI_DIRTY_INODE)) | |
1471 | update_inode(inode, page); | |
608514de | 1472 | set_dentry_mark(page, |
52681375 | 1473 | need_dentry_mark(sbi, ino)); |
26de9b11 | 1474 | } |
608514de JK |
1475 | /* may be written by other thread */ |
1476 | if (!PageDirty(page)) | |
1477 | set_page_dirty(page); | |
1478 | } | |
1479 | ||
1480 | if (!clear_page_dirty_for_io(page)) | |
1481 | goto continue_unlock; | |
52681375 | 1482 | |
e7c75ab0 | 1483 | ret = __write_node_page(page, atomic && |
d68f735b JK |
1484 | page == last_page, |
1485 | &submitted, wbc); | |
c267ec15 | 1486 | if (ret) { |
52681375 | 1487 | unlock_page(page); |
608514de JK |
1488 | f2fs_put_page(last_page, 0); |
1489 | break; | |
d68f735b | 1490 | } else if (submitted) { |
942fd319 | 1491 | last_idx = page->index; |
608514de | 1492 | } |
3f5f4959 | 1493 | |
608514de JK |
1494 | if (page == last_page) { |
1495 | f2fs_put_page(page, 0); | |
1496 | marked = true; | |
52681375 | 1497 | break; |
c267ec15 | 1498 | } |
52681375 JK |
1499 | } |
1500 | pagevec_release(&pvec); | |
1501 | cond_resched(); | |
1502 | ||
608514de | 1503 | if (ret || marked) |
52681375 JK |
1504 | break; |
1505 | } | |
608514de JK |
1506 | if (!ret && atomic && !marked) { |
1507 | f2fs_msg(sbi->sb, KERN_DEBUG, | |
1508 | "Retry to write fsync mark: ino=%u, idx=%lx", | |
1509 | ino, last_page->index); | |
1510 | lock_page(last_page); | |
d40a43af | 1511 | f2fs_wait_on_page_writeback(last_page, NODE, true); |
608514de JK |
1512 | set_page_dirty(last_page); |
1513 | unlock_page(last_page); | |
1514 | goto retry; | |
1515 | } | |
9de69279 | 1516 | out: |
942fd319 JK |
1517 | if (last_idx != ULONG_MAX) |
1518 | f2fs_submit_merged_bio_cond(sbi, NULL, ino, last_idx, | |
1519 | NODE, WRITE); | |
c267ec15 | 1520 | return ret ? -EIO: 0; |
52681375 JK |
1521 | } |
1522 | ||
1523 | int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc) | |
1524 | { | |
1525 | pgoff_t index, end; | |
1526 | struct pagevec pvec; | |
1527 | int step = 0; | |
12bb0a8f | 1528 | int nwritten = 0; |
3f5f4959 | 1529 | int ret = 0; |
e05df3b1 JK |
1530 | |
1531 | pagevec_init(&pvec, 0); | |
1532 | ||
1533 | next_step: | |
1534 | index = 0; | |
80dd9c0e | 1535 | end = ULONG_MAX; |
e05df3b1 JK |
1536 | |
1537 | while (index <= end) { | |
1538 | int i, nr_pages; | |
4ef51a8f | 1539 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, |
e05df3b1 JK |
1540 | PAGECACHE_TAG_DIRTY, |
1541 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
1542 | if (nr_pages == 0) | |
1543 | break; | |
1544 | ||
1545 | for (i = 0; i < nr_pages; i++) { | |
1546 | struct page *page = pvec.pages[i]; | |
d68f735b | 1547 | bool submitted = false; |
e05df3b1 | 1548 | |
6d5a1495 CY |
1549 | if (unlikely(f2fs_cp_error(sbi))) { |
1550 | pagevec_release(&pvec); | |
3f5f4959 CY |
1551 | ret = -EIO; |
1552 | goto out; | |
6d5a1495 CY |
1553 | } |
1554 | ||
e05df3b1 JK |
1555 | /* |
1556 | * flushing sequence with step: | |
1557 | * 0. indirect nodes | |
1558 | * 1. dentry dnodes | |
1559 | * 2. file dnodes | |
1560 | */ | |
1561 | if (step == 0 && IS_DNODE(page)) | |
1562 | continue; | |
1563 | if (step == 1 && (!IS_DNODE(page) || | |
1564 | is_cold_node(page))) | |
1565 | continue; | |
1566 | if (step == 2 && (!IS_DNODE(page) || | |
1567 | !is_cold_node(page))) | |
1568 | continue; | |
9a4cbc9e | 1569 | lock_node: |
52681375 | 1570 | if (!trylock_page(page)) |
e05df3b1 JK |
1571 | continue; |
1572 | ||
4ef51a8f | 1573 | if (unlikely(page->mapping != NODE_MAPPING(sbi))) { |
e05df3b1 JK |
1574 | continue_unlock: |
1575 | unlock_page(page); | |
1576 | continue; | |
1577 | } | |
e05df3b1 JK |
1578 | |
1579 | if (!PageDirty(page)) { | |
1580 | /* someone wrote it for us */ | |
1581 | goto continue_unlock; | |
1582 | } | |
1583 | ||
2049d4fc | 1584 | /* flush inline_data */ |
52681375 | 1585 | if (is_inline_node(page)) { |
2049d4fc JK |
1586 | clear_inline_node(page); |
1587 | unlock_page(page); | |
1588 | flush_inline_data(sbi, ino_of_node(page)); | |
9a4cbc9e | 1589 | goto lock_node; |
2049d4fc JK |
1590 | } |
1591 | ||
fa3d2bdf JK |
1592 | f2fs_wait_on_page_writeback(page, NODE, true); |
1593 | ||
1594 | BUG_ON(PageWriteback(page)); | |
e05df3b1 JK |
1595 | if (!clear_page_dirty_for_io(page)) |
1596 | goto continue_unlock; | |
1597 | ||
52681375 JK |
1598 | set_fsync_mark(page, 0); |
1599 | set_dentry_mark(page, 0); | |
52746519 | 1600 | |
d68f735b JK |
1601 | ret = __write_node_page(page, false, &submitted, wbc); |
1602 | if (ret) | |
52746519 | 1603 | unlock_page(page); |
d68f735b | 1604 | else if (submitted) |
3f5f4959 | 1605 | nwritten++; |
e05df3b1 JK |
1606 | |
1607 | if (--wbc->nr_to_write == 0) | |
1608 | break; | |
1609 | } | |
1610 | pagevec_release(&pvec); | |
1611 | cond_resched(); | |
1612 | ||
1613 | if (wbc->nr_to_write == 0) { | |
1614 | step = 2; | |
1615 | break; | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | if (step < 2) { | |
1620 | step++; | |
1621 | goto next_step; | |
1622 | } | |
3f5f4959 CY |
1623 | out: |
1624 | if (nwritten) | |
1625 | f2fs_submit_merged_bio(sbi, NODE, WRITE); | |
1626 | return ret; | |
e05df3b1 JK |
1627 | } |
1628 | ||
cfe58f9d JK |
1629 | int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) |
1630 | { | |
80dd9c0e | 1631 | pgoff_t index = 0, end = ULONG_MAX; |
cfe58f9d | 1632 | struct pagevec pvec; |
280db3c8 | 1633 | int ret2, ret = 0; |
cfe58f9d JK |
1634 | |
1635 | pagevec_init(&pvec, 0); | |
4ef51a8f JK |
1636 | |
1637 | while (index <= end) { | |
1638 | int i, nr_pages; | |
1639 | nr_pages = pagevec_lookup_tag(&pvec, NODE_MAPPING(sbi), &index, | |
1640 | PAGECACHE_TAG_WRITEBACK, | |
1641 | min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1); | |
1642 | if (nr_pages == 0) | |
1643 | break; | |
cfe58f9d JK |
1644 | |
1645 | for (i = 0; i < nr_pages; i++) { | |
1646 | struct page *page = pvec.pages[i]; | |
1647 | ||
1648 | /* until radix tree lookup accepts end_index */ | |
cfb271d4 | 1649 | if (unlikely(page->index > end)) |
cfe58f9d JK |
1650 | continue; |
1651 | ||
4bf08ff6 | 1652 | if (ino && ino_of_node(page) == ino) { |
fec1d657 | 1653 | f2fs_wait_on_page_writeback(page, NODE, true); |
4bf08ff6 CY |
1654 | if (TestClearPageError(page)) |
1655 | ret = -EIO; | |
1656 | } | |
cfe58f9d JK |
1657 | } |
1658 | pagevec_release(&pvec); | |
1659 | cond_resched(); | |
1660 | } | |
1661 | ||
280db3c8 | 1662 | ret2 = filemap_check_errors(NODE_MAPPING(sbi)); |
cfe58f9d JK |
1663 | if (!ret) |
1664 | ret = ret2; | |
1665 | return ret; | |
1666 | } | |
1667 | ||
e05df3b1 JK |
1668 | static int f2fs_write_node_pages(struct address_space *mapping, |
1669 | struct writeback_control *wbc) | |
1670 | { | |
4081363f | 1671 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
9dfa1baf | 1672 | struct blk_plug plug; |
50c8cdb3 | 1673 | long diff; |
e05df3b1 | 1674 | |
4660f9c0 JK |
1675 | /* balancing f2fs's metadata in background */ |
1676 | f2fs_balance_fs_bg(sbi); | |
e05df3b1 | 1677 | |
a7fdffbd | 1678 | /* collect a number of dirty node pages and write together */ |
87d6f890 | 1679 | if (get_pages(sbi, F2FS_DIRTY_NODES) < nr_pages_to_skip(sbi, NODE)) |
d3baf95d | 1680 | goto skip_write; |
a7fdffbd | 1681 | |
d31c7c3f YH |
1682 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
1683 | ||
50c8cdb3 | 1684 | diff = nr_pages_to_write(sbi, NODE, wbc); |
fb5566da | 1685 | wbc->sync_mode = WB_SYNC_NONE; |
9dfa1baf | 1686 | blk_start_plug(&plug); |
52681375 | 1687 | sync_node_pages(sbi, wbc); |
9dfa1baf | 1688 | blk_finish_plug(&plug); |
50c8cdb3 | 1689 | wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); |
e05df3b1 | 1690 | return 0; |
d3baf95d JK |
1691 | |
1692 | skip_write: | |
1693 | wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_NODES); | |
d31c7c3f | 1694 | trace_f2fs_writepages(mapping->host, wbc, NODE); |
d3baf95d | 1695 | return 0; |
e05df3b1 JK |
1696 | } |
1697 | ||
1698 | static int f2fs_set_node_page_dirty(struct page *page) | |
1699 | { | |
26c6b887 JK |
1700 | trace_f2fs_set_page_dirty(page, NODE); |
1701 | ||
237c0790 JK |
1702 | if (!PageUptodate(page)) |
1703 | SetPageUptodate(page); | |
e05df3b1 | 1704 | if (!PageDirty(page)) { |
fe76b796 | 1705 | f2fs_set_page_dirty_nobuffers(page); |
4081363f | 1706 | inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); |
e05df3b1 | 1707 | SetPagePrivate(page); |
9e4ded3f | 1708 | f2fs_trace_pid(page); |
e05df3b1 JK |
1709 | return 1; |
1710 | } | |
1711 | return 0; | |
1712 | } | |
1713 | ||
0a8165d7 | 1714 | /* |
e05df3b1 JK |
1715 | * Structure of the f2fs node operations |
1716 | */ | |
1717 | const struct address_space_operations f2fs_node_aops = { | |
1718 | .writepage = f2fs_write_node_page, | |
1719 | .writepages = f2fs_write_node_pages, | |
1720 | .set_page_dirty = f2fs_set_node_page_dirty, | |
487261f3 CY |
1721 | .invalidatepage = f2fs_invalidate_page, |
1722 | .releasepage = f2fs_release_page, | |
5b7a487c WG |
1723 | #ifdef CONFIG_MIGRATION |
1724 | .migratepage = f2fs_migrate_page, | |
1725 | #endif | |
e05df3b1 JK |
1726 | }; |
1727 | ||
8a7ed66a JK |
1728 | static struct free_nid *__lookup_free_nid_list(struct f2fs_nm_info *nm_i, |
1729 | nid_t n) | |
e05df3b1 | 1730 | { |
8a7ed66a | 1731 | return radix_tree_lookup(&nm_i->free_nid_root, n); |
e05df3b1 JK |
1732 | } |
1733 | ||
eb0aa4b8 JK |
1734 | static int __insert_nid_to_list(struct f2fs_sb_info *sbi, |
1735 | struct free_nid *i, enum nid_list list, bool new) | |
e05df3b1 | 1736 | { |
b8559dc2 CY |
1737 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
1738 | ||
eb0aa4b8 JK |
1739 | if (new) { |
1740 | int err = radix_tree_insert(&nm_i->free_nid_root, i->nid, i); | |
1741 | if (err) | |
1742 | return err; | |
1743 | } | |
1744 | ||
b8559dc2 CY |
1745 | f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW : |
1746 | i->state != NID_ALLOC); | |
1747 | nm_i->nid_cnt[list]++; | |
1748 | list_add_tail(&i->list, &nm_i->nid_list[list]); | |
eb0aa4b8 | 1749 | return 0; |
b8559dc2 CY |
1750 | } |
1751 | ||
1752 | static void __remove_nid_from_list(struct f2fs_sb_info *sbi, | |
eb0aa4b8 | 1753 | struct free_nid *i, enum nid_list list, bool reuse) |
b8559dc2 CY |
1754 | { |
1755 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
1756 | ||
1757 | f2fs_bug_on(sbi, list == FREE_NID_LIST ? i->state != NID_NEW : | |
1758 | i->state != NID_ALLOC); | |
1759 | nm_i->nid_cnt[list]--; | |
e05df3b1 | 1760 | list_del(&i->list); |
eb0aa4b8 JK |
1761 | if (!reuse) |
1762 | radix_tree_delete(&nm_i->free_nid_root, i->nid); | |
e05df3b1 JK |
1763 | } |
1764 | ||
4ac91242 CY |
1765 | /* return if the nid is recognized as free */ |
1766 | static bool add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) | |
e05df3b1 | 1767 | { |
6fb03f3a | 1768 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e05df3b1 | 1769 | struct free_nid *i; |
59bbd474 | 1770 | struct nat_entry *ne; |
eb0aa4b8 | 1771 | int err; |
9198aceb JK |
1772 | |
1773 | /* 0 nid should not be used */ | |
cfb271d4 | 1774 | if (unlikely(nid == 0)) |
4ac91242 | 1775 | return false; |
59bbd474 | 1776 | |
7bd59381 GZ |
1777 | if (build) { |
1778 | /* do not add allocated nids */ | |
7bd59381 | 1779 | ne = __lookup_nat_cache(nm_i, nid); |
a5131193 | 1780 | if (ne && (!get_nat_flag(ne, IS_CHECKPOINTED) || |
7ef35e3b | 1781 | nat_get_blkaddr(ne) != NULL_ADDR)) |
4ac91242 | 1782 | return false; |
e05df3b1 | 1783 | } |
7bd59381 GZ |
1784 | |
1785 | i = f2fs_kmem_cache_alloc(free_nid_slab, GFP_NOFS); | |
e05df3b1 JK |
1786 | i->nid = nid; |
1787 | i->state = NID_NEW; | |
1788 | ||
769ec6e5 JK |
1789 | if (radix_tree_preload(GFP_NOFS)) { |
1790 | kmem_cache_free(free_nid_slab, i); | |
4ac91242 | 1791 | return true; |
769ec6e5 JK |
1792 | } |
1793 | ||
b8559dc2 | 1794 | spin_lock(&nm_i->nid_list_lock); |
eb0aa4b8 JK |
1795 | err = __insert_nid_to_list(sbi, i, FREE_NID_LIST, true); |
1796 | spin_unlock(&nm_i->nid_list_lock); | |
1797 | radix_tree_preload_end(); | |
1798 | if (err) { | |
e05df3b1 | 1799 | kmem_cache_free(free_nid_slab, i); |
4ac91242 | 1800 | return true; |
e05df3b1 | 1801 | } |
4ac91242 | 1802 | return true; |
e05df3b1 JK |
1803 | } |
1804 | ||
b8559dc2 | 1805 | static void remove_free_nid(struct f2fs_sb_info *sbi, nid_t nid) |
e05df3b1 | 1806 | { |
b8559dc2 | 1807 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e05df3b1 | 1808 | struct free_nid *i; |
cf0ee0f0 CY |
1809 | bool need_free = false; |
1810 | ||
b8559dc2 | 1811 | spin_lock(&nm_i->nid_list_lock); |
8a7ed66a | 1812 | i = __lookup_free_nid_list(nm_i, nid); |
e05df3b1 | 1813 | if (i && i->state == NID_NEW) { |
eb0aa4b8 | 1814 | __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); |
cf0ee0f0 | 1815 | need_free = true; |
e05df3b1 | 1816 | } |
b8559dc2 | 1817 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 CY |
1818 | |
1819 | if (need_free) | |
1820 | kmem_cache_free(free_nid_slab, i); | |
e05df3b1 JK |
1821 | } |
1822 | ||
9f7e4a2c | 1823 | static void update_free_nid_bitmap(struct f2fs_sb_info *sbi, nid_t nid, |
7041d5d2 | 1824 | bool set, bool build, bool locked) |
4ac91242 CY |
1825 | { |
1826 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
1827 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(nid); | |
1828 | unsigned int nid_ofs = nid - START_NID(nid); | |
1829 | ||
1830 | if (!test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) | |
1831 | return; | |
1832 | ||
1833 | if (set) | |
23380b85 | 1834 | __set_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); |
4ac91242 | 1835 | else |
23380b85 | 1836 | __clear_bit_le(nid_ofs, nm_i->free_nid_bitmap[nat_ofs]); |
586d1492 | 1837 | |
7041d5d2 CY |
1838 | if (!locked) |
1839 | spin_lock(&nm_i->free_nid_lock); | |
586d1492 CY |
1840 | if (set) |
1841 | nm_i->free_nid_count[nat_ofs]++; | |
1842 | else if (!build) | |
1843 | nm_i->free_nid_count[nat_ofs]--; | |
7041d5d2 CY |
1844 | if (!locked) |
1845 | spin_unlock(&nm_i->free_nid_lock); | |
4ac91242 CY |
1846 | } |
1847 | ||
6fb03f3a | 1848 | static void scan_nat_page(struct f2fs_sb_info *sbi, |
e05df3b1 JK |
1849 | struct page *nat_page, nid_t start_nid) |
1850 | { | |
6fb03f3a | 1851 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
e05df3b1 JK |
1852 | struct f2fs_nat_block *nat_blk = page_address(nat_page); |
1853 | block_t blk_addr; | |
4ac91242 | 1854 | unsigned int nat_ofs = NAT_BLOCK_OFFSET(start_nid); |
e05df3b1 JK |
1855 | int i; |
1856 | ||
586d1492 CY |
1857 | if (test_bit_le(nat_ofs, nm_i->nat_block_bitmap)) |
1858 | return; | |
1859 | ||
23380b85 | 1860 | __set_bit_le(nat_ofs, nm_i->nat_block_bitmap); |
4ac91242 | 1861 | |
e05df3b1 JK |
1862 | i = start_nid % NAT_ENTRY_PER_BLOCK; |
1863 | ||
1864 | for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) { | |
4ac91242 | 1865 | bool freed = false; |
23d38844 | 1866 | |
cfb271d4 | 1867 | if (unlikely(start_nid >= nm_i->max_nid)) |
04431c44 | 1868 | break; |
23d38844 HL |
1869 | |
1870 | blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); | |
9850cf4a | 1871 | f2fs_bug_on(sbi, blk_addr == NEW_ADDR); |
3a2ad567 | 1872 | if (blk_addr == NULL_ADDR) |
4ac91242 | 1873 | freed = add_free_nid(sbi, start_nid, true); |
7041d5d2 | 1874 | update_free_nid_bitmap(sbi, start_nid, freed, true, false); |
4ac91242 CY |
1875 | } |
1876 | } | |
1877 | ||
1878 | static void scan_free_nid_bits(struct f2fs_sb_info *sbi) | |
1879 | { | |
1880 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
1881 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
1882 | struct f2fs_journal *journal = curseg->journal; | |
1883 | unsigned int i, idx; | |
4ac91242 CY |
1884 | |
1885 | down_read(&nm_i->nat_tree_lock); | |
1886 | ||
1887 | for (i = 0; i < nm_i->nat_blocks; i++) { | |
1888 | if (!test_bit_le(i, nm_i->nat_block_bitmap)) | |
1889 | continue; | |
586d1492 CY |
1890 | if (!nm_i->free_nid_count[i]) |
1891 | continue; | |
4ac91242 CY |
1892 | for (idx = 0; idx < NAT_ENTRY_PER_BLOCK; idx++) { |
1893 | nid_t nid; | |
1894 | ||
1895 | if (!test_bit_le(idx, nm_i->free_nid_bitmap[i])) | |
1896 | continue; | |
1897 | ||
1898 | nid = i * NAT_ENTRY_PER_BLOCK + idx; | |
1899 | add_free_nid(sbi, nid, true); | |
1900 | ||
f0cdbfe6 | 1901 | if (nm_i->nid_cnt[FREE_NID_LIST] >= MAX_FREE_NIDS) |
4ac91242 CY |
1902 | goto out; |
1903 | } | |
1904 | } | |
1905 | out: | |
1906 | down_read(&curseg->journal_rwsem); | |
1907 | for (i = 0; i < nats_in_cursum(journal); i++) { | |
1908 | block_t addr; | |
1909 | nid_t nid; | |
1910 | ||
1911 | addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); | |
1912 | nid = le32_to_cpu(nid_in_journal(journal, i)); | |
1913 | if (addr == NULL_ADDR) | |
1914 | add_free_nid(sbi, nid, true); | |
1915 | else | |
1916 | remove_free_nid(sbi, nid); | |
e05df3b1 | 1917 | } |
4ac91242 CY |
1918 | up_read(&curseg->journal_rwsem); |
1919 | up_read(&nm_i->nat_tree_lock); | |
e05df3b1 JK |
1920 | } |
1921 | ||
22ad0b6a | 1922 | static void __build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) |
e05df3b1 | 1923 | { |
e05df3b1 JK |
1924 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
1925 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 1926 | struct f2fs_journal *journal = curseg->journal; |
8760952d | 1927 | int i = 0; |
55008d84 | 1928 | nid_t nid = nm_i->next_scan_nid; |
e05df3b1 | 1929 | |
55008d84 | 1930 | /* Enough entries */ |
b8559dc2 | 1931 | if (nm_i->nid_cnt[FREE_NID_LIST] >= NAT_ENTRY_PER_BLOCK) |
55008d84 | 1932 | return; |
e05df3b1 | 1933 | |
3a2ad567 | 1934 | if (!sync && !available_free_memory(sbi, FREE_NIDS)) |
55008d84 | 1935 | return; |
e05df3b1 | 1936 | |
4ac91242 CY |
1937 | if (!mount) { |
1938 | /* try to find free nids in free_nid_bitmap */ | |
1939 | scan_free_nid_bits(sbi); | |
1940 | ||
1941 | if (nm_i->nid_cnt[FREE_NID_LIST]) | |
1942 | return; | |
22ad0b6a JK |
1943 | } |
1944 | ||
55008d84 | 1945 | /* readahead nat pages to be scanned */ |
26879fb1 CY |
1946 | ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, |
1947 | META_NAT, true); | |
e05df3b1 | 1948 | |
b873b798 | 1949 | down_read(&nm_i->nat_tree_lock); |
a5131193 | 1950 | |
e05df3b1 JK |
1951 | while (1) { |
1952 | struct page *page = get_current_nat_page(sbi, nid); | |
1953 | ||
6fb03f3a | 1954 | scan_nat_page(sbi, page, nid); |
e05df3b1 JK |
1955 | f2fs_put_page(page, 1); |
1956 | ||
1957 | nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK)); | |
cfb271d4 | 1958 | if (unlikely(nid >= nm_i->max_nid)) |
e05df3b1 | 1959 | nid = 0; |
55008d84 | 1960 | |
a6d494b6 | 1961 | if (++i >= FREE_NID_PAGES) |
e05df3b1 JK |
1962 | break; |
1963 | } | |
1964 | ||
55008d84 JK |
1965 | /* go to the next free nat pages to find free nids abundantly */ |
1966 | nm_i->next_scan_nid = nid; | |
e05df3b1 JK |
1967 | |
1968 | /* find free nids from current sum_pages */ | |
b7ad7512 | 1969 | down_read(&curseg->journal_rwsem); |
dfc08a12 CY |
1970 | for (i = 0; i < nats_in_cursum(journal); i++) { |
1971 | block_t addr; | |
1972 | ||
1973 | addr = le32_to_cpu(nat_in_journal(journal, i).block_addr); | |
1974 | nid = le32_to_cpu(nid_in_journal(journal, i)); | |
e05df3b1 | 1975 | if (addr == NULL_ADDR) |
6fb03f3a | 1976 | add_free_nid(sbi, nid, true); |
e05df3b1 | 1977 | else |
b8559dc2 | 1978 | remove_free_nid(sbi, nid); |
e05df3b1 | 1979 | } |
b7ad7512 | 1980 | up_read(&curseg->journal_rwsem); |
b873b798 | 1981 | up_read(&nm_i->nat_tree_lock); |
2db2388f CY |
1982 | |
1983 | ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), | |
ea1a29a0 | 1984 | nm_i->ra_nid_pages, META_NAT, false); |
e05df3b1 JK |
1985 | } |
1986 | ||
22ad0b6a | 1987 | void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount) |
2411cf5b CY |
1988 | { |
1989 | mutex_lock(&NM_I(sbi)->build_lock); | |
22ad0b6a | 1990 | __build_free_nids(sbi, sync, mount); |
2411cf5b CY |
1991 | mutex_unlock(&NM_I(sbi)->build_lock); |
1992 | } | |
1993 | ||
e05df3b1 JK |
1994 | /* |
1995 | * If this function returns success, caller can obtain a new nid | |
1996 | * from second parameter of this function. | |
1997 | * The returned nid could be used ino as well as nid when inode is created. | |
1998 | */ | |
1999 | bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid) | |
2000 | { | |
2001 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2002 | struct free_nid *i = NULL; | |
e05df3b1 | 2003 | retry: |
cb78942b | 2004 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
55523519 CY |
2005 | if (time_to_inject(sbi, FAULT_ALLOC_NID)) { |
2006 | f2fs_show_injection_info(FAULT_ALLOC_NID); | |
cb78942b | 2007 | return false; |
55523519 | 2008 | } |
cb78942b | 2009 | #endif |
b8559dc2 | 2010 | spin_lock(&nm_i->nid_list_lock); |
e05df3b1 | 2011 | |
04d47e67 CY |
2012 | if (unlikely(nm_i->available_nids == 0)) { |
2013 | spin_unlock(&nm_i->nid_list_lock); | |
2014 | return false; | |
2015 | } | |
e05df3b1 | 2016 | |
55008d84 | 2017 | /* We should not use stale free nids created by build_free_nids */ |
b8559dc2 CY |
2018 | if (nm_i->nid_cnt[FREE_NID_LIST] && !on_build_free_nids(nm_i)) { |
2019 | f2fs_bug_on(sbi, list_empty(&nm_i->nid_list[FREE_NID_LIST])); | |
2020 | i = list_first_entry(&nm_i->nid_list[FREE_NID_LIST], | |
2021 | struct free_nid, list); | |
55008d84 | 2022 | *nid = i->nid; |
b8559dc2 | 2023 | |
eb0aa4b8 | 2024 | __remove_nid_from_list(sbi, i, FREE_NID_LIST, true); |
55008d84 | 2025 | i->state = NID_ALLOC; |
eb0aa4b8 | 2026 | __insert_nid_to_list(sbi, i, ALLOC_NID_LIST, false); |
04d47e67 | 2027 | nm_i->available_nids--; |
4ac91242 | 2028 | |
7041d5d2 | 2029 | update_free_nid_bitmap(sbi, *nid, false, false, false); |
4ac91242 | 2030 | |
b8559dc2 | 2031 | spin_unlock(&nm_i->nid_list_lock); |
55008d84 JK |
2032 | return true; |
2033 | } | |
b8559dc2 | 2034 | spin_unlock(&nm_i->nid_list_lock); |
55008d84 JK |
2035 | |
2036 | /* Let's scan nat pages and its caches to get free nids */ | |
22ad0b6a | 2037 | build_free_nids(sbi, true, false); |
55008d84 | 2038 | goto retry; |
e05df3b1 JK |
2039 | } |
2040 | ||
0a8165d7 | 2041 | /* |
e05df3b1 JK |
2042 | * alloc_nid() should be called prior to this function. |
2043 | */ | |
2044 | void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) | |
2045 | { | |
2046 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2047 | struct free_nid *i; | |
2048 | ||
b8559dc2 | 2049 | spin_lock(&nm_i->nid_list_lock); |
8a7ed66a | 2050 | i = __lookup_free_nid_list(nm_i, nid); |
b8559dc2 | 2051 | f2fs_bug_on(sbi, !i); |
eb0aa4b8 | 2052 | __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false); |
b8559dc2 | 2053 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 CY |
2054 | |
2055 | kmem_cache_free(free_nid_slab, i); | |
e05df3b1 JK |
2056 | } |
2057 | ||
0a8165d7 | 2058 | /* |
e05df3b1 JK |
2059 | * alloc_nid() should be called prior to this function. |
2060 | */ | |
2061 | void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) | |
2062 | { | |
49952fa1 JK |
2063 | struct f2fs_nm_info *nm_i = NM_I(sbi); |
2064 | struct free_nid *i; | |
cf0ee0f0 | 2065 | bool need_free = false; |
49952fa1 | 2066 | |
65985d93 JK |
2067 | if (!nid) |
2068 | return; | |
2069 | ||
b8559dc2 | 2070 | spin_lock(&nm_i->nid_list_lock); |
8a7ed66a | 2071 | i = __lookup_free_nid_list(nm_i, nid); |
b8559dc2 CY |
2072 | f2fs_bug_on(sbi, !i); |
2073 | ||
6fb03f3a | 2074 | if (!available_free_memory(sbi, FREE_NIDS)) { |
eb0aa4b8 | 2075 | __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, false); |
cf0ee0f0 | 2076 | need_free = true; |
95630cba | 2077 | } else { |
eb0aa4b8 | 2078 | __remove_nid_from_list(sbi, i, ALLOC_NID_LIST, true); |
95630cba | 2079 | i->state = NID_NEW; |
eb0aa4b8 | 2080 | __insert_nid_to_list(sbi, i, FREE_NID_LIST, false); |
95630cba | 2081 | } |
04d47e67 CY |
2082 | |
2083 | nm_i->available_nids++; | |
2084 | ||
7041d5d2 | 2085 | update_free_nid_bitmap(sbi, nid, true, false, false); |
4ac91242 | 2086 | |
b8559dc2 | 2087 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 CY |
2088 | |
2089 | if (need_free) | |
2090 | kmem_cache_free(free_nid_slab, i); | |
e05df3b1 JK |
2091 | } |
2092 | ||
31696580 CY |
2093 | int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) |
2094 | { | |
2095 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2096 | struct free_nid *i, *next; | |
2097 | int nr = nr_shrink; | |
2098 | ||
b8559dc2 | 2099 | if (nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS) |
ad4edb83 JK |
2100 | return 0; |
2101 | ||
31696580 CY |
2102 | if (!mutex_trylock(&nm_i->build_lock)) |
2103 | return 0; | |
2104 | ||
b8559dc2 CY |
2105 | spin_lock(&nm_i->nid_list_lock); |
2106 | list_for_each_entry_safe(i, next, &nm_i->nid_list[FREE_NID_LIST], | |
2107 | list) { | |
2108 | if (nr_shrink <= 0 || | |
2109 | nm_i->nid_cnt[FREE_NID_LIST] <= MAX_FREE_NIDS) | |
31696580 | 2110 | break; |
b8559dc2 | 2111 | |
eb0aa4b8 | 2112 | __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); |
31696580 CY |
2113 | kmem_cache_free(free_nid_slab, i); |
2114 | nr_shrink--; | |
31696580 | 2115 | } |
b8559dc2 | 2116 | spin_unlock(&nm_i->nid_list_lock); |
31696580 CY |
2117 | mutex_unlock(&nm_i->build_lock); |
2118 | ||
2119 | return nr - nr_shrink; | |
2120 | } | |
2121 | ||
70cfed88 | 2122 | void recover_inline_xattr(struct inode *inode, struct page *page) |
28cdce04 | 2123 | { |
28cdce04 CY |
2124 | void *src_addr, *dst_addr; |
2125 | size_t inline_size; | |
2126 | struct page *ipage; | |
2127 | struct f2fs_inode *ri; | |
2128 | ||
4081363f | 2129 | ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); |
9850cf4a | 2130 | f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); |
28cdce04 | 2131 | |
e3b4d43f JK |
2132 | ri = F2FS_INODE(page); |
2133 | if (!(ri->i_inline & F2FS_INLINE_XATTR)) { | |
91942321 | 2134 | clear_inode_flag(inode, FI_INLINE_XATTR); |
e3b4d43f JK |
2135 | goto update_inode; |
2136 | } | |
2137 | ||
28cdce04 CY |
2138 | dst_addr = inline_xattr_addr(ipage); |
2139 | src_addr = inline_xattr_addr(page); | |
2140 | inline_size = inline_xattr_size(inode); | |
2141 | ||
fec1d657 | 2142 | f2fs_wait_on_page_writeback(ipage, NODE, true); |
28cdce04 | 2143 | memcpy(dst_addr, src_addr, inline_size); |
e3b4d43f | 2144 | update_inode: |
28cdce04 CY |
2145 | update_inode(inode, ipage); |
2146 | f2fs_put_page(ipage, 1); | |
2147 | } | |
2148 | ||
d260081c | 2149 | int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) |
abb2366c | 2150 | { |
4081363f | 2151 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
abb2366c JK |
2152 | nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; |
2153 | nid_t new_xnid = nid_of_node(page); | |
2154 | struct node_info ni; | |
d260081c | 2155 | struct page *xpage; |
abb2366c | 2156 | |
abb2366c JK |
2157 | if (!prev_xnid) |
2158 | goto recover_xnid; | |
2159 | ||
d260081c | 2160 | /* 1: invalidate the previous xattr nid */ |
abb2366c | 2161 | get_node_info(sbi, prev_xnid, &ni); |
9850cf4a | 2162 | f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); |
abb2366c JK |
2163 | invalidate_blocks(sbi, ni.blk_addr); |
2164 | dec_valid_node_count(sbi, inode); | |
479f40c4 | 2165 | set_node_addr(sbi, &ni, NULL_ADDR, false); |
abb2366c JK |
2166 | |
2167 | recover_xnid: | |
d260081c CY |
2168 | /* 2: update xattr nid in inode */ |
2169 | remove_free_nid(sbi, new_xnid); | |
2170 | f2fs_i_xnid_write(inode, new_xnid); | |
abb2366c | 2171 | if (unlikely(!inc_valid_node_count(sbi, inode))) |
9850cf4a | 2172 | f2fs_bug_on(sbi, 1); |
d260081c CY |
2173 | update_inode_page(inode); |
2174 | ||
2175 | /* 3: update and set xattr node page dirty */ | |
2176 | xpage = grab_cache_page(NODE_MAPPING(sbi), new_xnid); | |
2177 | if (!xpage) | |
2178 | return -ENOMEM; | |
2179 | ||
2180 | memcpy(F2FS_NODE(xpage), F2FS_NODE(page), PAGE_SIZE); | |
abb2366c | 2181 | |
abb2366c JK |
2182 | get_node_info(sbi, new_xnid, &ni); |
2183 | ni.ino = inode->i_ino; | |
479f40c4 | 2184 | set_node_addr(sbi, &ni, NEW_ADDR, false); |
d260081c CY |
2185 | set_page_dirty(xpage); |
2186 | f2fs_put_page(xpage, 1); | |
abb2366c | 2187 | |
d260081c | 2188 | return 0; |
abb2366c JK |
2189 | } |
2190 | ||
e05df3b1 JK |
2191 | int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) |
2192 | { | |
58bfaf44 | 2193 | struct f2fs_inode *src, *dst; |
e05df3b1 JK |
2194 | nid_t ino = ino_of_node(page); |
2195 | struct node_info old_ni, new_ni; | |
2196 | struct page *ipage; | |
2197 | ||
e8271fa3 JK |
2198 | get_node_info(sbi, ino, &old_ni); |
2199 | ||
2200 | if (unlikely(old_ni.blk_addr != NULL_ADDR)) | |
2201 | return -EINVAL; | |
e8ea9b3d | 2202 | retry: |
300e129c | 2203 | ipage = f2fs_grab_cache_page(NODE_MAPPING(sbi), ino, false); |
e8ea9b3d JK |
2204 | if (!ipage) { |
2205 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
2206 | goto retry; | |
2207 | } | |
e05df3b1 | 2208 | |
e1c42045 | 2209 | /* Should not use this inode from free nid list */ |
b8559dc2 | 2210 | remove_free_nid(sbi, ino); |
e05df3b1 | 2211 | |
237c0790 JK |
2212 | if (!PageUptodate(ipage)) |
2213 | SetPageUptodate(ipage); | |
e05df3b1 JK |
2214 | fill_node_footer(ipage, ino, ino, 0, true); |
2215 | ||
58bfaf44 JK |
2216 | src = F2FS_INODE(page); |
2217 | dst = F2FS_INODE(ipage); | |
e05df3b1 | 2218 | |
58bfaf44 JK |
2219 | memcpy(dst, src, (unsigned long)&src->i_ext - (unsigned long)src); |
2220 | dst->i_size = 0; | |
2221 | dst->i_blocks = cpu_to_le64(1); | |
2222 | dst->i_links = cpu_to_le32(1); | |
2223 | dst->i_xattr_nid = 0; | |
617deb8c | 2224 | dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; |
e05df3b1 JK |
2225 | |
2226 | new_ni = old_ni; | |
2227 | new_ni.ino = ino; | |
2228 | ||
cfb271d4 | 2229 | if (unlikely(!inc_valid_node_count(sbi, NULL))) |
65e5cd0a | 2230 | WARN_ON(1); |
479f40c4 | 2231 | set_node_addr(sbi, &new_ni, NEW_ADDR, false); |
e05df3b1 | 2232 | inc_valid_inode_count(sbi); |
617deb8c | 2233 | set_page_dirty(ipage); |
e05df3b1 JK |
2234 | f2fs_put_page(ipage, 1); |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | int restore_node_summary(struct f2fs_sb_info *sbi, | |
2239 | unsigned int segno, struct f2fs_summary_block *sum) | |
2240 | { | |
2241 | struct f2fs_node *rn; | |
2242 | struct f2fs_summary *sum_entry; | |
e05df3b1 | 2243 | block_t addr; |
9ecf4b80 | 2244 | int i, idx, last_offset, nrpages; |
e05df3b1 JK |
2245 | |
2246 | /* scan the node segment */ | |
2247 | last_offset = sbi->blocks_per_seg; | |
2248 | addr = START_BLOCK(sbi, segno); | |
2249 | sum_entry = &sum->entries[0]; | |
2250 | ||
9ecf4b80 | 2251 | for (i = 0; i < last_offset; i += nrpages, addr += nrpages) { |
664ba972 | 2252 | nrpages = min(last_offset - i, BIO_MAX_PAGES); |
393ff91f | 2253 | |
e1c42045 | 2254 | /* readahead node pages */ |
26879fb1 | 2255 | ra_meta_pages(sbi, addr, nrpages, META_POR, true); |
e05df3b1 | 2256 | |
9ecf4b80 | 2257 | for (idx = addr; idx < addr + nrpages; idx++) { |
2b947003 | 2258 | struct page *page = get_tmp_page(sbi, idx); |
9af0ff1c | 2259 | |
9ecf4b80 CY |
2260 | rn = F2FS_NODE(page); |
2261 | sum_entry->nid = rn->footer.nid; | |
2262 | sum_entry->version = 0; | |
2263 | sum_entry->ofs_in_node = 0; | |
2264 | sum_entry++; | |
2265 | f2fs_put_page(page, 1); | |
9af0ff1c | 2266 | } |
bac4eef6 | 2267 | |
9ecf4b80 | 2268 | invalidate_mapping_pages(META_MAPPING(sbi), addr, |
bac4eef6 | 2269 | addr + nrpages); |
e05df3b1 | 2270 | } |
9ecf4b80 | 2271 | return 0; |
e05df3b1 JK |
2272 | } |
2273 | ||
aec71382 | 2274 | static void remove_nats_in_journal(struct f2fs_sb_info *sbi) |
e05df3b1 JK |
2275 | { |
2276 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2277 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2278 | struct f2fs_journal *journal = curseg->journal; |
e05df3b1 JK |
2279 | int i; |
2280 | ||
b7ad7512 | 2281 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 2282 | for (i = 0; i < nats_in_cursum(journal); i++) { |
e05df3b1 JK |
2283 | struct nat_entry *ne; |
2284 | struct f2fs_nat_entry raw_ne; | |
dfc08a12 | 2285 | nid_t nid = le32_to_cpu(nid_in_journal(journal, i)); |
e05df3b1 | 2286 | |
dfc08a12 | 2287 | raw_ne = nat_in_journal(journal, i); |
9be32d72 | 2288 | |
e05df3b1 | 2289 | ne = __lookup_nat_cache(nm_i, nid); |
e05df3b1 | 2290 | if (!ne) { |
5c9e4184 | 2291 | ne = grab_nat_entry(nm_i, nid, true); |
9be32d72 | 2292 | node_info_from_raw_nat(&ne->ni, &raw_ne); |
e05df3b1 | 2293 | } |
04d47e67 CY |
2294 | |
2295 | /* | |
2296 | * if a free nat in journal has not been used after last | |
2297 | * checkpoint, we should remove it from available nids, | |
2298 | * since later we will add it again. | |
2299 | */ | |
2300 | if (!get_nat_flag(ne, IS_DIRTY) && | |
2301 | le32_to_cpu(raw_ne.block_addr) == NULL_ADDR) { | |
2302 | spin_lock(&nm_i->nid_list_lock); | |
2303 | nm_i->available_nids--; | |
2304 | spin_unlock(&nm_i->nid_list_lock); | |
2305 | } | |
2306 | ||
e05df3b1 | 2307 | __set_nat_cache_dirty(nm_i, ne); |
e05df3b1 | 2308 | } |
dfc08a12 | 2309 | update_nats_in_cursum(journal, -i); |
b7ad7512 | 2310 | up_write(&curseg->journal_rwsem); |
e05df3b1 JK |
2311 | } |
2312 | ||
309cc2b6 JK |
2313 | static void __adjust_nat_entry_set(struct nat_entry_set *nes, |
2314 | struct list_head *head, int max) | |
e05df3b1 | 2315 | { |
309cc2b6 | 2316 | struct nat_entry_set *cur; |
e05df3b1 | 2317 | |
309cc2b6 JK |
2318 | if (nes->entry_cnt >= max) |
2319 | goto add_out; | |
e05df3b1 | 2320 | |
309cc2b6 JK |
2321 | list_for_each_entry(cur, head, set_list) { |
2322 | if (cur->entry_cnt >= nes->entry_cnt) { | |
2323 | list_add(&nes->set_list, cur->set_list.prev); | |
2324 | return; | |
2325 | } | |
aec71382 | 2326 | } |
309cc2b6 JK |
2327 | add_out: |
2328 | list_add_tail(&nes->set_list, head); | |
2329 | } | |
e05df3b1 | 2330 | |
9f7e4a2c | 2331 | static void __update_nat_bits(struct f2fs_sb_info *sbi, nid_t start_nid, |
22ad0b6a JK |
2332 | struct page *page) |
2333 | { | |
2334 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2335 | unsigned int nat_index = start_nid / NAT_ENTRY_PER_BLOCK; | |
2336 | struct f2fs_nat_block *nat_blk = page_address(page); | |
2337 | int valid = 0; | |
2338 | int i; | |
2339 | ||
2340 | if (!enabled_nat_bits(sbi, NULL)) | |
2341 | return; | |
2342 | ||
2343 | for (i = 0; i < NAT_ENTRY_PER_BLOCK; i++) { | |
2344 | if (start_nid == 0 && i == 0) | |
2345 | valid++; | |
2346 | if (nat_blk->entries[i].block_addr) | |
2347 | valid++; | |
2348 | } | |
2349 | if (valid == 0) { | |
23380b85 JK |
2350 | __set_bit_le(nat_index, nm_i->empty_nat_bits); |
2351 | __clear_bit_le(nat_index, nm_i->full_nat_bits); | |
22ad0b6a JK |
2352 | return; |
2353 | } | |
2354 | ||
23380b85 | 2355 | __clear_bit_le(nat_index, nm_i->empty_nat_bits); |
22ad0b6a | 2356 | if (valid == NAT_ENTRY_PER_BLOCK) |
23380b85 | 2357 | __set_bit_le(nat_index, nm_i->full_nat_bits); |
22ad0b6a | 2358 | else |
23380b85 | 2359 | __clear_bit_le(nat_index, nm_i->full_nat_bits); |
22ad0b6a JK |
2360 | } |
2361 | ||
309cc2b6 | 2362 | static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, |
22ad0b6a | 2363 | struct nat_entry_set *set, struct cp_control *cpc) |
309cc2b6 JK |
2364 | { |
2365 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2366 | struct f2fs_journal *journal = curseg->journal; |
309cc2b6 JK |
2367 | nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; |
2368 | bool to_journal = true; | |
2369 | struct f2fs_nat_block *nat_blk; | |
2370 | struct nat_entry *ne, *cur; | |
2371 | struct page *page = NULL; | |
e05df3b1 | 2372 | |
aec71382 CY |
2373 | /* |
2374 | * there are two steps to flush nat entries: | |
2375 | * #1, flush nat entries to journal in current hot data summary block. | |
2376 | * #2, flush nat entries to nat page. | |
2377 | */ | |
22ad0b6a JK |
2378 | if (enabled_nat_bits(sbi, cpc) || |
2379 | !__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL)) | |
309cc2b6 JK |
2380 | to_journal = false; |
2381 | ||
2382 | if (to_journal) { | |
b7ad7512 | 2383 | down_write(&curseg->journal_rwsem); |
309cc2b6 JK |
2384 | } else { |
2385 | page = get_next_nat_page(sbi, start_nid); | |
2386 | nat_blk = page_address(page); | |
2387 | f2fs_bug_on(sbi, !nat_blk); | |
2388 | } | |
aec71382 | 2389 | |
309cc2b6 JK |
2390 | /* flush dirty nats in nat entry set */ |
2391 | list_for_each_entry_safe(ne, cur, &set->entry_list, list) { | |
2392 | struct f2fs_nat_entry *raw_ne; | |
2393 | nid_t nid = nat_get_nid(ne); | |
2394 | int offset; | |
2395 | ||
2396 | if (nat_get_blkaddr(ne) == NEW_ADDR) | |
2397 | continue; | |
aec71382 CY |
2398 | |
2399 | if (to_journal) { | |
dfc08a12 | 2400 | offset = lookup_journal_in_cursum(journal, |
309cc2b6 JK |
2401 | NAT_JOURNAL, nid, 1); |
2402 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 CY |
2403 | raw_ne = &nat_in_journal(journal, offset); |
2404 | nid_in_journal(journal, offset) = cpu_to_le32(nid); | |
aec71382 | 2405 | } else { |
309cc2b6 | 2406 | raw_ne = &nat_blk->entries[nid - start_nid]; |
e05df3b1 | 2407 | } |
309cc2b6 | 2408 | raw_nat_from_node_info(raw_ne, &ne->ni); |
309cc2b6 JK |
2409 | nat_reset_flag(ne); |
2410 | __clear_nat_cache_dirty(NM_I(sbi), ne); | |
04d47e67 | 2411 | if (nat_get_blkaddr(ne) == NULL_ADDR) { |
309cc2b6 | 2412 | add_free_nid(sbi, nid, false); |
04d47e67 CY |
2413 | spin_lock(&NM_I(sbi)->nid_list_lock); |
2414 | NM_I(sbi)->available_nids++; | |
7041d5d2 | 2415 | update_free_nid_bitmap(sbi, nid, true, false, false); |
4ac91242 CY |
2416 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
2417 | } else { | |
2418 | spin_lock(&NM_I(sbi)->nid_list_lock); | |
7041d5d2 | 2419 | update_free_nid_bitmap(sbi, nid, false, false, false); |
04d47e67 CY |
2420 | spin_unlock(&NM_I(sbi)->nid_list_lock); |
2421 | } | |
309cc2b6 | 2422 | } |
e05df3b1 | 2423 | |
22ad0b6a | 2424 | if (to_journal) { |
b7ad7512 | 2425 | up_write(&curseg->journal_rwsem); |
22ad0b6a JK |
2426 | } else { |
2427 | __update_nat_bits(sbi, start_nid, page); | |
309cc2b6 | 2428 | f2fs_put_page(page, 1); |
22ad0b6a | 2429 | } |
aec71382 | 2430 | |
80ec2e91 CL |
2431 | f2fs_bug_on(sbi, set->entry_cnt); |
2432 | ||
2433 | radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); | |
2434 | kmem_cache_free(nat_entry_set_slab, set); | |
309cc2b6 | 2435 | } |
aec71382 | 2436 | |
309cc2b6 JK |
2437 | /* |
2438 | * This function is called during the checkpointing process. | |
2439 | */ | |
22ad0b6a | 2440 | void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
309cc2b6 JK |
2441 | { |
2442 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2443 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 2444 | struct f2fs_journal *journal = curseg->journal; |
7aed0d45 | 2445 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
309cc2b6 JK |
2446 | struct nat_entry_set *set, *tmp; |
2447 | unsigned int found; | |
2448 | nid_t set_idx = 0; | |
2449 | LIST_HEAD(sets); | |
2450 | ||
20d047c8 CL |
2451 | if (!nm_i->dirty_nat_cnt) |
2452 | return; | |
a5131193 | 2453 | |
b873b798 | 2454 | down_write(&nm_i->nat_tree_lock); |
a5131193 | 2455 | |
309cc2b6 JK |
2456 | /* |
2457 | * if there are no enough space in journal to store dirty nat | |
2458 | * entries, remove all entries from journal and merge them | |
2459 | * into nat entry set. | |
2460 | */ | |
900f7362 | 2461 | if (enabled_nat_bits(sbi, cpc) || |
22ad0b6a | 2462 | !__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL)) |
309cc2b6 JK |
2463 | remove_nats_in_journal(sbi); |
2464 | ||
309cc2b6 | 2465 | while ((found = __gang_lookup_nat_set(nm_i, |
7aed0d45 | 2466 | set_idx, SETVEC_SIZE, setvec))) { |
309cc2b6 JK |
2467 | unsigned idx; |
2468 | set_idx = setvec[found - 1]->set + 1; | |
2469 | for (idx = 0; idx < found; idx++) | |
2470 | __adjust_nat_entry_set(setvec[idx], &sets, | |
dfc08a12 | 2471 | MAX_NAT_JENTRIES(journal)); |
e05df3b1 | 2472 | } |
aec71382 | 2473 | |
309cc2b6 JK |
2474 | /* flush dirty nats in nat entry set */ |
2475 | list_for_each_entry_safe(set, tmp, &sets, set_list) | |
22ad0b6a | 2476 | __flush_nat_entry_set(sbi, set, cpc); |
309cc2b6 | 2477 | |
b873b798 | 2478 | up_write(&nm_i->nat_tree_lock); |
a5131193 | 2479 | |
9850cf4a | 2480 | f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); |
e05df3b1 JK |
2481 | } |
2482 | ||
22ad0b6a JK |
2483 | static int __get_nat_bitmaps(struct f2fs_sb_info *sbi) |
2484 | { | |
2485 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
2486 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2487 | unsigned int nat_bits_bytes = nm_i->nat_blocks / BITS_PER_BYTE; | |
2488 | unsigned int i; | |
2489 | __u64 cp_ver = cur_cp_version(ckpt); | |
22ad0b6a JK |
2490 | block_t nat_bits_addr; |
2491 | ||
2492 | if (!enabled_nat_bits(sbi, NULL)) | |
2493 | return 0; | |
2494 | ||
2495 | nm_i->nat_bits_blocks = F2FS_BYTES_TO_BLK((nat_bits_bytes << 1) + 8 + | |
2496 | F2FS_BLKSIZE - 1); | |
2497 | nm_i->nat_bits = kzalloc(nm_i->nat_bits_blocks << F2FS_BLKSIZE_BITS, | |
2498 | GFP_KERNEL); | |
2499 | if (!nm_i->nat_bits) | |
2500 | return -ENOMEM; | |
2501 | ||
2502 | nat_bits_addr = __start_cp_addr(sbi) + sbi->blocks_per_seg - | |
2503 | nm_i->nat_bits_blocks; | |
2504 | for (i = 0; i < nm_i->nat_bits_blocks; i++) { | |
2505 | struct page *page = get_meta_page(sbi, nat_bits_addr++); | |
2506 | ||
2507 | memcpy(nm_i->nat_bits + (i << F2FS_BLKSIZE_BITS), | |
2508 | page_address(page), F2FS_BLKSIZE); | |
2509 | f2fs_put_page(page, 1); | |
2510 | } | |
2511 | ||
ced2c7ea | 2512 | cp_ver |= (cur_cp_crc(ckpt) << 32); |
22ad0b6a JK |
2513 | if (cpu_to_le64(cp_ver) != *(__le64 *)nm_i->nat_bits) { |
2514 | disable_nat_bits(sbi, true); | |
2515 | return 0; | |
2516 | } | |
2517 | ||
2518 | nm_i->full_nat_bits = nm_i->nat_bits + 8; | |
2519 | nm_i->empty_nat_bits = nm_i->full_nat_bits + nat_bits_bytes; | |
2520 | ||
2521 | f2fs_msg(sbi->sb, KERN_NOTICE, "Found nat_bits in checkpoint"); | |
2522 | return 0; | |
2523 | } | |
2524 | ||
7041d5d2 CY |
2525 | inline void load_free_nid_bitmap(struct f2fs_sb_info *sbi) |
2526 | { | |
2527 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2528 | unsigned int i = 0; | |
2529 | nid_t nid, last_nid; | |
2530 | ||
2531 | if (!enabled_nat_bits(sbi, NULL)) | |
2532 | return; | |
2533 | ||
2534 | for (i = 0; i < nm_i->nat_blocks; i++) { | |
2535 | i = find_next_bit_le(nm_i->empty_nat_bits, nm_i->nat_blocks, i); | |
2536 | if (i >= nm_i->nat_blocks) | |
2537 | break; | |
2538 | ||
2539 | __set_bit_le(i, nm_i->nat_block_bitmap); | |
2540 | ||
2541 | nid = i * NAT_ENTRY_PER_BLOCK; | |
2542 | last_nid = (i + 1) * NAT_ENTRY_PER_BLOCK; | |
2543 | ||
2544 | spin_lock(&nm_i->free_nid_lock); | |
2545 | for (; nid < last_nid; nid++) | |
2546 | update_free_nid_bitmap(sbi, nid, true, true, true); | |
2547 | spin_unlock(&nm_i->free_nid_lock); | |
2548 | } | |
2549 | ||
2550 | for (i = 0; i < nm_i->nat_blocks; i++) { | |
2551 | i = find_next_bit_le(nm_i->full_nat_bits, nm_i->nat_blocks, i); | |
2552 | if (i >= nm_i->nat_blocks) | |
2553 | break; | |
2554 | ||
2555 | __set_bit_le(i, nm_i->nat_block_bitmap); | |
2556 | } | |
2557 | } | |
2558 | ||
e05df3b1 JK |
2559 | static int init_node_manager(struct f2fs_sb_info *sbi) |
2560 | { | |
2561 | struct f2fs_super_block *sb_raw = F2FS_RAW_SUPER(sbi); | |
2562 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2563 | unsigned char *version_bitmap; | |
22ad0b6a JK |
2564 | unsigned int nat_segs; |
2565 | int err; | |
e05df3b1 JK |
2566 | |
2567 | nm_i->nat_blkaddr = le32_to_cpu(sb_raw->nat_blkaddr); | |
2568 | ||
2569 | /* segment_count_nat includes pair segment so divide to 2. */ | |
2570 | nat_segs = le32_to_cpu(sb_raw->segment_count_nat) >> 1; | |
22ad0b6a JK |
2571 | nm_i->nat_blocks = nat_segs << le32_to_cpu(sb_raw->log_blocks_per_seg); |
2572 | nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nm_i->nat_blocks; | |
7ee0eeab | 2573 | |
b63da15e | 2574 | /* not used nids: 0, node, meta, (and root counted as valid node) */ |
04d47e67 CY |
2575 | nm_i->available_nids = nm_i->max_nid - sbi->total_valid_node_count - |
2576 | F2FS_RESERVED_NODE_NUM; | |
b8559dc2 CY |
2577 | nm_i->nid_cnt[FREE_NID_LIST] = 0; |
2578 | nm_i->nid_cnt[ALLOC_NID_LIST] = 0; | |
e05df3b1 | 2579 | nm_i->nat_cnt = 0; |
cdfc41c1 | 2580 | nm_i->ram_thresh = DEF_RAM_THRESHOLD; |
ea1a29a0 | 2581 | nm_i->ra_nid_pages = DEF_RA_NID_PAGES; |
2304cb0c | 2582 | nm_i->dirty_nats_ratio = DEF_DIRTY_NAT_RATIO_THRESHOLD; |
e05df3b1 | 2583 | |
8a7ed66a | 2584 | INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); |
b8559dc2 CY |
2585 | INIT_LIST_HEAD(&nm_i->nid_list[FREE_NID_LIST]); |
2586 | INIT_LIST_HEAD(&nm_i->nid_list[ALLOC_NID_LIST]); | |
769ec6e5 JK |
2587 | INIT_RADIX_TREE(&nm_i->nat_root, GFP_NOIO); |
2588 | INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_NOIO); | |
e05df3b1 | 2589 | INIT_LIST_HEAD(&nm_i->nat_entries); |
e05df3b1 JK |
2590 | |
2591 | mutex_init(&nm_i->build_lock); | |
b8559dc2 | 2592 | spin_lock_init(&nm_i->nid_list_lock); |
b873b798 | 2593 | init_rwsem(&nm_i->nat_tree_lock); |
e05df3b1 | 2594 | |
e05df3b1 | 2595 | nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); |
79b5793b | 2596 | nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); |
e05df3b1 JK |
2597 | version_bitmap = __bitmap_ptr(sbi, NAT_BITMAP); |
2598 | if (!version_bitmap) | |
2599 | return -EFAULT; | |
2600 | ||
79b5793b AG |
2601 | nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size, |
2602 | GFP_KERNEL); | |
2603 | if (!nm_i->nat_bitmap) | |
2604 | return -ENOMEM; | |
599a09b2 | 2605 | |
22ad0b6a JK |
2606 | err = __get_nat_bitmaps(sbi); |
2607 | if (err) | |
2608 | return err; | |
2609 | ||
599a09b2 CY |
2610 | #ifdef CONFIG_F2FS_CHECK_FS |
2611 | nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, | |
2612 | GFP_KERNEL); | |
2613 | if (!nm_i->nat_bitmap_mir) | |
2614 | return -ENOMEM; | |
2615 | #endif | |
2616 | ||
e05df3b1 JK |
2617 | return 0; |
2618 | } | |
2619 | ||
9f7e4a2c | 2620 | static int init_free_nid_cache(struct f2fs_sb_info *sbi) |
4ac91242 CY |
2621 | { |
2622 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2623 | ||
2624 | nm_i->free_nid_bitmap = f2fs_kvzalloc(nm_i->nat_blocks * | |
2625 | NAT_ENTRY_BITMAP_SIZE, GFP_KERNEL); | |
2626 | if (!nm_i->free_nid_bitmap) | |
2627 | return -ENOMEM; | |
2628 | ||
2629 | nm_i->nat_block_bitmap = f2fs_kvzalloc(nm_i->nat_blocks / 8, | |
2630 | GFP_KERNEL); | |
2631 | if (!nm_i->nat_block_bitmap) | |
2632 | return -ENOMEM; | |
586d1492 CY |
2633 | |
2634 | nm_i->free_nid_count = f2fs_kvzalloc(nm_i->nat_blocks * | |
2635 | sizeof(unsigned short), GFP_KERNEL); | |
2636 | if (!nm_i->free_nid_count) | |
2637 | return -ENOMEM; | |
2638 | ||
2639 | spin_lock_init(&nm_i->free_nid_lock); | |
2640 | ||
4ac91242 CY |
2641 | return 0; |
2642 | } | |
2643 | ||
e05df3b1 JK |
2644 | int build_node_manager(struct f2fs_sb_info *sbi) |
2645 | { | |
2646 | int err; | |
2647 | ||
2648 | sbi->nm_info = kzalloc(sizeof(struct f2fs_nm_info), GFP_KERNEL); | |
2649 | if (!sbi->nm_info) | |
2650 | return -ENOMEM; | |
2651 | ||
2652 | err = init_node_manager(sbi); | |
2653 | if (err) | |
2654 | return err; | |
2655 | ||
4ac91242 CY |
2656 | err = init_free_nid_cache(sbi); |
2657 | if (err) | |
2658 | return err; | |
2659 | ||
7041d5d2 CY |
2660 | /* load free nid status from nat_bits table */ |
2661 | load_free_nid_bitmap(sbi); | |
2662 | ||
22ad0b6a | 2663 | build_free_nids(sbi, true, true); |
e05df3b1 JK |
2664 | return 0; |
2665 | } | |
2666 | ||
2667 | void destroy_node_manager(struct f2fs_sb_info *sbi) | |
2668 | { | |
2669 | struct f2fs_nm_info *nm_i = NM_I(sbi); | |
2670 | struct free_nid *i, *next_i; | |
2671 | struct nat_entry *natvec[NATVEC_SIZE]; | |
7aed0d45 | 2672 | struct nat_entry_set *setvec[SETVEC_SIZE]; |
e05df3b1 JK |
2673 | nid_t nid = 0; |
2674 | unsigned int found; | |
2675 | ||
2676 | if (!nm_i) | |
2677 | return; | |
2678 | ||
2679 | /* destroy free nid list */ | |
b8559dc2 CY |
2680 | spin_lock(&nm_i->nid_list_lock); |
2681 | list_for_each_entry_safe(i, next_i, &nm_i->nid_list[FREE_NID_LIST], | |
2682 | list) { | |
eb0aa4b8 | 2683 | __remove_nid_from_list(sbi, i, FREE_NID_LIST, false); |
b8559dc2 | 2684 | spin_unlock(&nm_i->nid_list_lock); |
cf0ee0f0 | 2685 | kmem_cache_free(free_nid_slab, i); |
b8559dc2 | 2686 | spin_lock(&nm_i->nid_list_lock); |
e05df3b1 | 2687 | } |
b8559dc2 CY |
2688 | f2fs_bug_on(sbi, nm_i->nid_cnt[FREE_NID_LIST]); |
2689 | f2fs_bug_on(sbi, nm_i->nid_cnt[ALLOC_NID_LIST]); | |
2690 | f2fs_bug_on(sbi, !list_empty(&nm_i->nid_list[ALLOC_NID_LIST])); | |
2691 | spin_unlock(&nm_i->nid_list_lock); | |
e05df3b1 JK |
2692 | |
2693 | /* destroy nat cache */ | |
b873b798 | 2694 | down_write(&nm_i->nat_tree_lock); |
e05df3b1 JK |
2695 | while ((found = __gang_lookup_nat_cache(nm_i, |
2696 | nid, NATVEC_SIZE, natvec))) { | |
2697 | unsigned idx; | |
7aed0d45 | 2698 | |
b6ce391e GZ |
2699 | nid = nat_get_nid(natvec[found - 1]) + 1; |
2700 | for (idx = 0; idx < found; idx++) | |
2701 | __del_from_nat_cache(nm_i, natvec[idx]); | |
e05df3b1 | 2702 | } |
9850cf4a | 2703 | f2fs_bug_on(sbi, nm_i->nat_cnt); |
7aed0d45 JK |
2704 | |
2705 | /* destroy nat set cache */ | |
2706 | nid = 0; | |
2707 | while ((found = __gang_lookup_nat_set(nm_i, | |
2708 | nid, SETVEC_SIZE, setvec))) { | |
2709 | unsigned idx; | |
2710 | ||
2711 | nid = setvec[found - 1]->set + 1; | |
2712 | for (idx = 0; idx < found; idx++) { | |
2713 | /* entry_cnt is not zero, when cp_error was occurred */ | |
2714 | f2fs_bug_on(sbi, !list_empty(&setvec[idx]->entry_list)); | |
2715 | radix_tree_delete(&nm_i->nat_set_root, setvec[idx]->set); | |
2716 | kmem_cache_free(nat_entry_set_slab, setvec[idx]); | |
2717 | } | |
2718 | } | |
b873b798 | 2719 | up_write(&nm_i->nat_tree_lock); |
e05df3b1 | 2720 | |
4ac91242 CY |
2721 | kvfree(nm_i->nat_block_bitmap); |
2722 | kvfree(nm_i->free_nid_bitmap); | |
586d1492 | 2723 | kvfree(nm_i->free_nid_count); |
4ac91242 | 2724 | |
e05df3b1 | 2725 | kfree(nm_i->nat_bitmap); |
22ad0b6a | 2726 | kfree(nm_i->nat_bits); |
599a09b2 CY |
2727 | #ifdef CONFIG_F2FS_CHECK_FS |
2728 | kfree(nm_i->nat_bitmap_mir); | |
2729 | #endif | |
e05df3b1 JK |
2730 | sbi->nm_info = NULL; |
2731 | kfree(nm_i); | |
2732 | } | |
2733 | ||
6e6093a8 | 2734 | int __init create_node_manager_caches(void) |
e05df3b1 JK |
2735 | { |
2736 | nat_entry_slab = f2fs_kmem_cache_create("nat_entry", | |
e8512d2e | 2737 | sizeof(struct nat_entry)); |
e05df3b1 | 2738 | if (!nat_entry_slab) |
aec71382 | 2739 | goto fail; |
e05df3b1 JK |
2740 | |
2741 | free_nid_slab = f2fs_kmem_cache_create("free_nid", | |
e8512d2e | 2742 | sizeof(struct free_nid)); |
aec71382 | 2743 | if (!free_nid_slab) |
ce3e6d25 | 2744 | goto destroy_nat_entry; |
aec71382 CY |
2745 | |
2746 | nat_entry_set_slab = f2fs_kmem_cache_create("nat_entry_set", | |
2747 | sizeof(struct nat_entry_set)); | |
2748 | if (!nat_entry_set_slab) | |
ce3e6d25 | 2749 | goto destroy_free_nid; |
e05df3b1 | 2750 | return 0; |
aec71382 | 2751 | |
ce3e6d25 | 2752 | destroy_free_nid: |
aec71382 | 2753 | kmem_cache_destroy(free_nid_slab); |
ce3e6d25 | 2754 | destroy_nat_entry: |
aec71382 CY |
2755 | kmem_cache_destroy(nat_entry_slab); |
2756 | fail: | |
2757 | return -ENOMEM; | |
e05df3b1 JK |
2758 | } |
2759 | ||
2760 | void destroy_node_manager_caches(void) | |
2761 | { | |
aec71382 | 2762 | kmem_cache_destroy(nat_entry_set_slab); |
e05df3b1 JK |
2763 | kmem_cache_destroy(free_nid_slab); |
2764 | kmem_cache_destroy(nat_entry_slab); | |
2765 | } |