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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
19#define SHRINK_NID_BATCH_SIZE 8
20
21#define DEF_RA_NID_PAGES 0
22
23
24#define MAX_RA_NODE 128
25
26
27#define DEF_RAM_THRESHOLD 1
28
29
30#define DEF_DIRTY_NAT_RATIO_THRESHOLD 10
31
32#define DEF_NAT_CACHE_THRESHOLD 100000
33
34
35#define NATVEC_SIZE 64
36#define SETVEC_SIZE 32
37
38
39#define LOCKED_PAGE 1
40
41
42enum {
43 IS_CHECKPOINTED,
44 HAS_FSYNCED_INODE,
45 HAS_LAST_FSYNC,
46 IS_DIRTY,
47 IS_PREALLOC,
48};
49
50
51
52
53struct node_info {
54 nid_t nid;
55 nid_t ino;
56 block_t blk_addr;
57 unsigned char version;
58 unsigned char flag;
59};
60
61struct nat_entry {
62 struct list_head list;
63 struct node_info ni;
64};
65
66#define nat_get_nid(nat) ((nat)->ni.nid)
67#define nat_set_nid(nat, n) ((nat)->ni.nid = (n))
68#define nat_get_blkaddr(nat) ((nat)->ni.blk_addr)
69#define nat_set_blkaddr(nat, b) ((nat)->ni.blk_addr = (b))
70#define nat_get_ino(nat) ((nat)->ni.ino)
71#define nat_set_ino(nat, i) ((nat)->ni.ino = (i))
72#define nat_get_version(nat) ((nat)->ni.version)
73#define nat_set_version(nat, v) ((nat)->ni.version = (v))
74
75#define inc_node_version(version) (++(version))
76
77static inline void copy_node_info(struct node_info *dst,
78 struct node_info *src)
79{
80 dst->nid = src->nid;
81 dst->ino = src->ino;
82 dst->blk_addr = src->blk_addr;
83 dst->version = src->version;
84
85}
86
87static inline void set_nat_flag(struct nat_entry *ne,
88 unsigned int type, bool set)
89{
90 unsigned char mask = 0x01 << type;
91 if (set)
92 ne->ni.flag |= mask;
93 else
94 ne->ni.flag &= ~mask;
95}
96
97static inline bool get_nat_flag(struct nat_entry *ne, unsigned int type)
98{
99 unsigned char mask = 0x01 << type;
100 return ne->ni.flag & mask;
101}
102
103static inline void nat_reset_flag(struct nat_entry *ne)
104{
105
106 set_nat_flag(ne, IS_CHECKPOINTED, true);
107 set_nat_flag(ne, HAS_FSYNCED_INODE, false);
108 set_nat_flag(ne, HAS_LAST_FSYNC, true);
109}
110
111static inline void node_info_from_raw_nat(struct node_info *ni,
112 struct f2fs_nat_entry *raw_ne)
113{
114 ni->ino = le32_to_cpu(raw_ne->ino);
115 ni->blk_addr = le32_to_cpu(raw_ne->block_addr);
116 ni->version = raw_ne->version;
117}
118
119static inline void raw_nat_from_node_info(struct f2fs_nat_entry *raw_ne,
120 struct node_info *ni)
121{
122 raw_ne->ino = cpu_to_le32(ni->ino);
123 raw_ne->block_addr = cpu_to_le32(ni->blk_addr);
124 raw_ne->version = ni->version;
125}
126
127static inline bool excess_dirty_nats(struct f2fs_sb_info *sbi)
128{
129 return NM_I(sbi)->dirty_nat_cnt >= NM_I(sbi)->max_nid *
130 NM_I(sbi)->dirty_nats_ratio / 100;
131}
132
133static inline bool excess_cached_nats(struct f2fs_sb_info *sbi)
134{
135 return NM_I(sbi)->nat_cnt >= DEF_NAT_CACHE_THRESHOLD;
136}
137
138static inline bool excess_dirty_nodes(struct f2fs_sb_info *sbi)
139{
140 return get_pages(sbi, F2FS_DIRTY_NODES) >= sbi->blocks_per_seg * 8;
141}
142
143enum mem_type {
144 FREE_NIDS,
145 NAT_ENTRIES,
146 DIRTY_DENTS,
147 INO_ENTRIES,
148 EXTENT_CACHE,
149 INMEM_PAGES,
150 BASE_CHECK,
151};
152
153struct nat_entry_set {
154 struct list_head set_list;
155 struct list_head entry_list;
156 nid_t set;
157 unsigned int entry_cnt;
158};
159
160struct free_nid {
161 struct list_head list;
162 nid_t nid;
163 int state;
164};
165
166static inline void next_free_nid(struct f2fs_sb_info *sbi, nid_t *nid)
167{
168 struct f2fs_nm_info *nm_i = NM_I(sbi);
169 struct free_nid *fnid;
170
171 spin_lock(&nm_i->nid_list_lock);
172 if (nm_i->nid_cnt[FREE_NID] <= 0) {
173 spin_unlock(&nm_i->nid_list_lock);
174 return;
175 }
176 fnid = list_first_entry(&nm_i->free_nid_list, struct free_nid, list);
177 *nid = fnid->nid;
178 spin_unlock(&nm_i->nid_list_lock);
179}
180
181
182
183
184static inline void get_nat_bitmap(struct f2fs_sb_info *sbi, void *addr)
185{
186 struct f2fs_nm_info *nm_i = NM_I(sbi);
187
188#ifdef CONFIG_F2FS_CHECK_FS
189 if (memcmp(nm_i->nat_bitmap, nm_i->nat_bitmap_mir,
190 nm_i->bitmap_size))
191 f2fs_bug_on(sbi, 1);
192#endif
193 memcpy(addr, nm_i->nat_bitmap, nm_i->bitmap_size);
194}
195
196static inline pgoff_t current_nat_addr(struct f2fs_sb_info *sbi, nid_t start)
197{
198 struct f2fs_nm_info *nm_i = NM_I(sbi);
199 pgoff_t block_off;
200 pgoff_t block_addr;
201
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206
207 block_off = NAT_BLOCK_OFFSET(start);
208
209 block_addr = (pgoff_t)(nm_i->nat_blkaddr +
210 (block_off << 1) -
211 (block_off & (sbi->blocks_per_seg - 1)));
212
213 if (f2fs_test_bit(block_off, nm_i->nat_bitmap))
214 block_addr += sbi->blocks_per_seg;
215
216 return block_addr;
217}
218
219static inline pgoff_t next_nat_addr(struct f2fs_sb_info *sbi,
220 pgoff_t block_addr)
221{
222 struct f2fs_nm_info *nm_i = NM_I(sbi);
223
224 block_addr -= nm_i->nat_blkaddr;
225 block_addr ^= 1 << sbi->log_blocks_per_seg;
226 return block_addr + nm_i->nat_blkaddr;
227}
228
229static inline void set_to_next_nat(struct f2fs_nm_info *nm_i, nid_t start_nid)
230{
231 unsigned int block_off = NAT_BLOCK_OFFSET(start_nid);
232
233 f2fs_change_bit(block_off, nm_i->nat_bitmap);
234#ifdef CONFIG_F2FS_CHECK_FS
235 f2fs_change_bit(block_off, nm_i->nat_bitmap_mir);
236#endif
237}
238
239static inline nid_t ino_of_node(struct page *node_page)
240{
241 struct f2fs_node *rn = F2FS_NODE(node_page);
242 return le32_to_cpu(rn->footer.ino);
243}
244
245static inline nid_t nid_of_node(struct page *node_page)
246{
247 struct f2fs_node *rn = F2FS_NODE(node_page);
248 return le32_to_cpu(rn->footer.nid);
249}
250
251static inline unsigned int ofs_of_node(struct page *node_page)
252{
253 struct f2fs_node *rn = F2FS_NODE(node_page);
254 unsigned flag = le32_to_cpu(rn->footer.flag);
255 return flag >> OFFSET_BIT_SHIFT;
256}
257
258static inline __u64 cpver_of_node(struct page *node_page)
259{
260 struct f2fs_node *rn = F2FS_NODE(node_page);
261 return le64_to_cpu(rn->footer.cp_ver);
262}
263
264static inline block_t next_blkaddr_of_node(struct page *node_page)
265{
266 struct f2fs_node *rn = F2FS_NODE(node_page);
267 return le32_to_cpu(rn->footer.next_blkaddr);
268}
269
270static inline void fill_node_footer(struct page *page, nid_t nid,
271 nid_t ino, unsigned int ofs, bool reset)
272{
273 struct f2fs_node *rn = F2FS_NODE(page);
274 unsigned int old_flag = 0;
275
276 if (reset)
277 memset(rn, 0, sizeof(*rn));
278 else
279 old_flag = le32_to_cpu(rn->footer.flag);
280
281 rn->footer.nid = cpu_to_le32(nid);
282 rn->footer.ino = cpu_to_le32(ino);
283
284
285 rn->footer.flag = cpu_to_le32((ofs << OFFSET_BIT_SHIFT) |
286 (old_flag & OFFSET_BIT_MASK));
287}
288
289static inline void copy_node_footer(struct page *dst, struct page *src)
290{
291 struct f2fs_node *src_rn = F2FS_NODE(src);
292 struct f2fs_node *dst_rn = F2FS_NODE(dst);
293 memcpy(&dst_rn->footer, &src_rn->footer, sizeof(struct node_footer));
294}
295
296static inline void fill_node_footer_blkaddr(struct page *page, block_t blkaddr)
297{
298 struct f2fs_checkpoint *ckpt = F2FS_CKPT(F2FS_P_SB(page));
299 struct f2fs_node *rn = F2FS_NODE(page);
300 __u64 cp_ver = cur_cp_version(ckpt);
301
302 if (__is_set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG))
303 cp_ver |= (cur_cp_crc(ckpt) << 32);
304
305 rn->footer.cp_ver = cpu_to_le64(cp_ver);
306 rn->footer.next_blkaddr = cpu_to_le32(blkaddr);
307}
308
309static inline bool is_recoverable_dnode(struct page *page)
310{
311 struct f2fs_checkpoint *ckpt = F2FS_CKPT(F2FS_P_SB(page));
312 __u64 cp_ver = cur_cp_version(ckpt);
313
314
315 if (__is_set_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG))
316 return (cp_ver << 32) == (cpver_of_node(page) << 32);
317
318 if (__is_set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG))
319 cp_ver |= (cur_cp_crc(ckpt) << 32);
320
321 return cp_ver == cpver_of_node(page);
322}
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345static inline bool IS_DNODE(struct page *node_page)
346{
347 unsigned int ofs = ofs_of_node(node_page);
348
349 if (f2fs_has_xattr_block(ofs))
350 return true;
351
352 if (ofs == 3 || ofs == 4 + NIDS_PER_BLOCK ||
353 ofs == 5 + 2 * NIDS_PER_BLOCK)
354 return false;
355 if (ofs >= 6 + 2 * NIDS_PER_BLOCK) {
356 ofs -= 6 + 2 * NIDS_PER_BLOCK;
357 if (!((long int)ofs % (NIDS_PER_BLOCK + 1)))
358 return false;
359 }
360 return true;
361}
362
363static inline int set_nid(struct page *p, int off, nid_t nid, bool i)
364{
365 struct f2fs_node *rn = F2FS_NODE(p);
366
367 f2fs_wait_on_page_writeback(p, NODE, true, true);
368
369 if (i)
370 rn->i.i_nid[off - NODE_DIR1_BLOCK] = cpu_to_le32(nid);
371 else
372 rn->in.nid[off] = cpu_to_le32(nid);
373 return set_page_dirty(p);
374}
375
376static inline nid_t get_nid(struct page *p, int off, bool i)
377{
378 struct f2fs_node *rn = F2FS_NODE(p);
379
380 if (i)
381 return le32_to_cpu(rn->i.i_nid[off - NODE_DIR1_BLOCK]);
382 return le32_to_cpu(rn->in.nid[off]);
383}
384
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389
390
391static inline int is_cold_data(struct page *page)
392{
393 return PageChecked(page);
394}
395
396static inline void set_cold_data(struct page *page)
397{
398 SetPageChecked(page);
399}
400
401static inline void clear_cold_data(struct page *page)
402{
403 ClearPageChecked(page);
404}
405
406static inline int is_node(struct page *page, int type)
407{
408 struct f2fs_node *rn = F2FS_NODE(page);
409 return le32_to_cpu(rn->footer.flag) & (1 << type);
410}
411
412#define is_cold_node(page) is_node(page, COLD_BIT_SHIFT)
413#define is_fsync_dnode(page) is_node(page, FSYNC_BIT_SHIFT)
414#define is_dent_dnode(page) is_node(page, DENT_BIT_SHIFT)
415
416static inline int is_inline_node(struct page *page)
417{
418 return PageChecked(page);
419}
420
421static inline void set_inline_node(struct page *page)
422{
423 SetPageChecked(page);
424}
425
426static inline void clear_inline_node(struct page *page)
427{
428 ClearPageChecked(page);
429}
430
431static inline void set_cold_node(struct page *page, bool is_dir)
432{
433 struct f2fs_node *rn = F2FS_NODE(page);
434 unsigned int flag = le32_to_cpu(rn->footer.flag);
435
436 if (is_dir)
437 flag &= ~(0x1 << COLD_BIT_SHIFT);
438 else
439 flag |= (0x1 << COLD_BIT_SHIFT);
440 rn->footer.flag = cpu_to_le32(flag);
441}
442
443static inline void set_mark(struct page *page, int mark, int type)
444{
445 struct f2fs_node *rn = F2FS_NODE(page);
446 unsigned int flag = le32_to_cpu(rn->footer.flag);
447 if (mark)
448 flag |= (0x1 << type);
449 else
450 flag &= ~(0x1 << type);
451 rn->footer.flag = cpu_to_le32(flag);
452
453#ifdef CONFIG_F2FS_CHECK_FS
454 f2fs_inode_chksum_set(F2FS_P_SB(page), page);
455#endif
456}
457#define set_dentry_mark(page, mark) set_mark(page, mark, DENT_BIT_SHIFT)
458#define set_fsync_mark(page, mark) set_mark(page, mark, FSYNC_BIT_SHIFT)
459