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9#define START_NID(nid) (((nid) / NAT_ENTRY_PER_BLOCK) * NAT_ENTRY_PER_BLOCK)
10
11
12#define NAT_BLOCK_OFFSET(start_nid) ((start_nid) / NAT_ENTRY_PER_BLOCK)
13
14
15#define FREE_NID_PAGES 8
16#define MAX_FREE_NIDS (NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES)
17
18#define DEF_RA_NID_PAGES 0
19
20
21#define MAX_RA_NODE 128
22
23
24#define DEF_RAM_THRESHOLD 1
25
26
27#define DEF_DIRTY_NAT_RATIO_THRESHOLD 10
28
29#define DEF_NAT_CACHE_THRESHOLD 100000
30
31
32#define NATVEC_SIZE 64
33#define SETVEC_SIZE 32
34
35
36#define LOCKED_PAGE 1
37
38
39enum {
40 IS_CHECKPOINTED,
41 HAS_FSYNCED_INODE,
42 HAS_LAST_FSYNC,
43 IS_DIRTY,
44 IS_PREALLOC,
45};
46
47
48
49
50struct node_info {
51 nid_t nid;
52 nid_t ino;
53 block_t blk_addr;
54 unsigned char version;
55 unsigned char flag;
56};
57
58struct nat_entry {
59 struct list_head list;
60 struct node_info ni;
61};
62
63#define nat_get_nid(nat) ((nat)->ni.nid)
64#define nat_set_nid(nat, n) ((nat)->ni.nid = (n))
65#define nat_get_blkaddr(nat) ((nat)->ni.blk_addr)
66#define nat_set_blkaddr(nat, b) ((nat)->ni.blk_addr = (b))
67#define nat_get_ino(nat) ((nat)->ni.ino)
68#define nat_set_ino(nat, i) ((nat)->ni.ino = (i))
69#define nat_get_version(nat) ((nat)->ni.version)
70#define nat_set_version(nat, v) ((nat)->ni.version = (v))
71
72#define inc_node_version(version) (++(version))
73
74static inline void copy_node_info(struct node_info *dst,
75 struct node_info *src)
76{
77 dst->nid = src->nid;
78 dst->ino = src->ino;
79 dst->blk_addr = src->blk_addr;
80 dst->version = src->version;
81
82}
83
84static inline void set_nat_flag(struct nat_entry *ne,
85 unsigned int type, bool set)
86{
87 unsigned char mask = 0x01 << type;
88 if (set)
89 ne->ni.flag |= mask;
90 else
91 ne->ni.flag &= ~mask;
92}
93
94static inline bool get_nat_flag(struct nat_entry *ne, unsigned int type)
95{
96 unsigned char mask = 0x01 << type;
97 return ne->ni.flag & mask;
98}
99
100static inline void nat_reset_flag(struct nat_entry *ne)
101{
102
103 set_nat_flag(ne, IS_CHECKPOINTED, true);
104 set_nat_flag(ne, HAS_FSYNCED_INODE, false);
105 set_nat_flag(ne, HAS_LAST_FSYNC, true);
106}
107
108static inline void node_info_from_raw_nat(struct node_info *ni,
109 struct f2fs_nat_entry *raw_ne)
110{
111 ni->ino = le32_to_cpu(raw_ne->ino);
112 ni->blk_addr = le32_to_cpu(raw_ne->block_addr);
113 ni->version = raw_ne->version;
114}
115
116static inline void raw_nat_from_node_info(struct f2fs_nat_entry *raw_ne,
117 struct node_info *ni)
118{
119 raw_ne->ino = cpu_to_le32(ni->ino);
120 raw_ne->block_addr = cpu_to_le32(ni->blk_addr);
121 raw_ne->version = ni->version;
122}
123
124static inline bool excess_dirty_nats(struct f2fs_sb_info *sbi)
125{
126 return NM_I(sbi)->dirty_nat_cnt >= NM_I(sbi)->max_nid *
127 NM_I(sbi)->dirty_nats_ratio / 100;
128}
129
130static inline bool excess_cached_nats(struct f2fs_sb_info *sbi)
131{
132 return NM_I(sbi)->nat_cnt >= DEF_NAT_CACHE_THRESHOLD;
133}
134
135static inline bool excess_dirty_nodes(struct f2fs_sb_info *sbi)
136{
137 return get_pages(sbi, F2FS_DIRTY_NODES) >= sbi->blocks_per_seg * 8;
138}
139
140enum mem_type {
141 FREE_NIDS,
142 NAT_ENTRIES,
143 DIRTY_DENTS,
144 INO_ENTRIES,
145 EXTENT_CACHE,
146 INMEM_PAGES,
147 BASE_CHECK,
148};
149
150struct nat_entry_set {
151 struct list_head set_list;
152 struct list_head entry_list;
153 nid_t set;
154 unsigned int entry_cnt;
155};
156
157struct free_nid {
158 struct list_head list;
159 nid_t nid;
160 int state;
161};
162
163static inline void next_free_nid(struct f2fs_sb_info *sbi, nid_t *nid)
164{
165 struct f2fs_nm_info *nm_i = NM_I(sbi);
166 struct free_nid *fnid;
167
168 spin_lock(&nm_i->nid_list_lock);
169 if (nm_i->nid_cnt[FREE_NID] <= 0) {
170 spin_unlock(&nm_i->nid_list_lock);
171 return;
172 }
173 fnid = list_first_entry(&nm_i->free_nid_list, struct free_nid, list);
174 *nid = fnid->nid;
175 spin_unlock(&nm_i->nid_list_lock);
176}
177
178
179
180
181static inline void get_nat_bitmap(struct f2fs_sb_info *sbi, void *addr)
182{
183 struct f2fs_nm_info *nm_i = NM_I(sbi);
184
185#ifdef CONFIG_F2FS_CHECK_FS
186 if (memcmp(nm_i->nat_bitmap, nm_i->nat_bitmap_mir,
187 nm_i->bitmap_size))
188 f2fs_bug_on(sbi, 1);
189#endif
190 memcpy(addr, nm_i->nat_bitmap, nm_i->bitmap_size);
191}
192
193static inline pgoff_t current_nat_addr(struct f2fs_sb_info *sbi, nid_t start)
194{
195 struct f2fs_nm_info *nm_i = NM_I(sbi);
196 pgoff_t block_off;
197 pgoff_t block_addr;
198
199
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202
203
204 block_off = NAT_BLOCK_OFFSET(start);
205
206 block_addr = (pgoff_t)(nm_i->nat_blkaddr +
207 (block_off << 1) -
208 (block_off & (sbi->blocks_per_seg - 1)));
209
210 if (f2fs_test_bit(block_off, nm_i->nat_bitmap))
211 block_addr += sbi->blocks_per_seg;
212
213 return block_addr;
214}
215
216static inline pgoff_t next_nat_addr(struct f2fs_sb_info *sbi,
217 pgoff_t block_addr)
218{
219 struct f2fs_nm_info *nm_i = NM_I(sbi);
220
221 block_addr -= nm_i->nat_blkaddr;
222 block_addr ^= 1 << sbi->log_blocks_per_seg;
223 return block_addr + nm_i->nat_blkaddr;
224}
225
226static inline void set_to_next_nat(struct f2fs_nm_info *nm_i, nid_t start_nid)
227{
228 unsigned int block_off = NAT_BLOCK_OFFSET(start_nid);
229
230 f2fs_change_bit(block_off, nm_i->nat_bitmap);
231#ifdef CONFIG_F2FS_CHECK_FS
232 f2fs_change_bit(block_off, nm_i->nat_bitmap_mir);
233#endif
234}
235
236static inline nid_t ino_of_node(struct page *node_page)
237{
238 struct f2fs_node *rn = F2FS_NODE(node_page);
239 return le32_to_cpu(rn->footer.ino);
240}
241
242static inline nid_t nid_of_node(struct page *node_page)
243{
244 struct f2fs_node *rn = F2FS_NODE(node_page);
245 return le32_to_cpu(rn->footer.nid);
246}
247
248static inline unsigned int ofs_of_node(struct page *node_page)
249{
250 struct f2fs_node *rn = F2FS_NODE(node_page);
251 unsigned flag = le32_to_cpu(rn->footer.flag);
252 return flag >> OFFSET_BIT_SHIFT;
253}
254
255static inline __u64 cpver_of_node(struct page *node_page)
256{
257 struct f2fs_node *rn = F2FS_NODE(node_page);
258 return le64_to_cpu(rn->footer.cp_ver);
259}
260
261static inline block_t next_blkaddr_of_node(struct page *node_page)
262{
263 struct f2fs_node *rn = F2FS_NODE(node_page);
264 return le32_to_cpu(rn->footer.next_blkaddr);
265}
266
267static inline void fill_node_footer(struct page *page, nid_t nid,
268 nid_t ino, unsigned int ofs, bool reset)
269{
270 struct f2fs_node *rn = F2FS_NODE(page);
271 unsigned int old_flag = 0;
272
273 if (reset)
274 memset(rn, 0, sizeof(*rn));
275 else
276 old_flag = le32_to_cpu(rn->footer.flag);
277
278 rn->footer.nid = cpu_to_le32(nid);
279 rn->footer.ino = cpu_to_le32(ino);
280
281
282 rn->footer.flag = cpu_to_le32((ofs << OFFSET_BIT_SHIFT) |
283 (old_flag & OFFSET_BIT_MASK));
284}
285
286static inline void copy_node_footer(struct page *dst, struct page *src)
287{
288 struct f2fs_node *src_rn = F2FS_NODE(src);
289 struct f2fs_node *dst_rn = F2FS_NODE(dst);
290 memcpy(&dst_rn->footer, &src_rn->footer, sizeof(struct node_footer));
291}
292
293static inline void fill_node_footer_blkaddr(struct page *page, block_t blkaddr)
294{
295 struct f2fs_checkpoint *ckpt = F2FS_CKPT(F2FS_P_SB(page));
296 struct f2fs_node *rn = F2FS_NODE(page);
297 __u64 cp_ver = cur_cp_version(ckpt);
298
299 if (__is_set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG))
300 cp_ver |= (cur_cp_crc(ckpt) << 32);
301
302 rn->footer.cp_ver = cpu_to_le64(cp_ver);
303 rn->footer.next_blkaddr = cpu_to_le32(blkaddr);
304}
305
306static inline bool is_recoverable_dnode(struct page *page)
307{
308 struct f2fs_checkpoint *ckpt = F2FS_CKPT(F2FS_P_SB(page));
309 __u64 cp_ver = cur_cp_version(ckpt);
310
311
312 if (__is_set_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG))
313 return (cp_ver << 32) == (cpver_of_node(page) << 32);
314
315 if (__is_set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG))
316 cp_ver |= (cur_cp_crc(ckpt) << 32);
317
318 return cp_ver == cpver_of_node(page);
319}
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342static inline bool IS_DNODE(struct page *node_page)
343{
344 unsigned int ofs = ofs_of_node(node_page);
345
346 if (f2fs_has_xattr_block(ofs))
347 return true;
348
349 if (ofs == 3 || ofs == 4 + NIDS_PER_BLOCK ||
350 ofs == 5 + 2 * NIDS_PER_BLOCK)
351 return false;
352 if (ofs >= 6 + 2 * NIDS_PER_BLOCK) {
353 ofs -= 6 + 2 * NIDS_PER_BLOCK;
354 if (!((long int)ofs % (NIDS_PER_BLOCK + 1)))
355 return false;
356 }
357 return true;
358}
359
360static inline int set_nid(struct page *p, int off, nid_t nid, bool i)
361{
362 struct f2fs_node *rn = F2FS_NODE(p);
363
364 f2fs_wait_on_page_writeback(p, NODE, true, true);
365
366 if (i)
367 rn->i.i_nid[off - NODE_DIR1_BLOCK] = cpu_to_le32(nid);
368 else
369 rn->in.nid[off] = cpu_to_le32(nid);
370 return set_page_dirty(p);
371}
372
373static inline nid_t get_nid(struct page *p, int off, bool i)
374{
375 struct f2fs_node *rn = F2FS_NODE(p);
376
377 if (i)
378 return le32_to_cpu(rn->i.i_nid[off - NODE_DIR1_BLOCK]);
379 return le32_to_cpu(rn->in.nid[off]);
380}
381
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386
387
388static inline int is_cold_data(struct page *page)
389{
390 return PageChecked(page);
391}
392
393static inline void set_cold_data(struct page *page)
394{
395 SetPageChecked(page);
396}
397
398static inline void clear_cold_data(struct page *page)
399{
400 ClearPageChecked(page);
401}
402
403static inline int is_node(struct page *page, int type)
404{
405 struct f2fs_node *rn = F2FS_NODE(page);
406 return le32_to_cpu(rn->footer.flag) & (1 << type);
407}
408
409#define is_cold_node(page) is_node(page, COLD_BIT_SHIFT)
410#define is_fsync_dnode(page) is_node(page, FSYNC_BIT_SHIFT)
411#define is_dent_dnode(page) is_node(page, DENT_BIT_SHIFT)
412
413static inline int is_inline_node(struct page *page)
414{
415 return PageChecked(page);
416}
417
418static inline void set_inline_node(struct page *page)
419{
420 SetPageChecked(page);
421}
422
423static inline void clear_inline_node(struct page *page)
424{
425 ClearPageChecked(page);
426}
427
428static inline void set_cold_node(struct page *page, bool is_dir)
429{
430 struct f2fs_node *rn = F2FS_NODE(page);
431 unsigned int flag = le32_to_cpu(rn->footer.flag);
432
433 if (is_dir)
434 flag &= ~(0x1 << COLD_BIT_SHIFT);
435 else
436 flag |= (0x1 << COLD_BIT_SHIFT);
437 rn->footer.flag = cpu_to_le32(flag);
438}
439
440static inline void set_mark(struct page *page, int mark, int type)
441{
442 struct f2fs_node *rn = F2FS_NODE(page);
443 unsigned int flag = le32_to_cpu(rn->footer.flag);
444 if (mark)
445 flag |= (0x1 << type);
446 else
447 flag &= ~(0x1 << type);
448 rn->footer.flag = cpu_to_le32(flag);
449
450#ifdef CONFIG_F2FS_CHECK_FS
451 f2fs_inode_chksum_set(F2FS_P_SB(page), page);
452#endif
453}
454#define set_dentry_mark(page, mark) set_mark(page, mark, DENT_BIT_SHIFT)
455#define set_fsync_mark(page, mark) set_mark(page, mark, FSYNC_BIT_SHIFT)
456