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f2fs: use bool for booleans
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0a8165d7 1/*
39a53e0c
JK		 2 * fs/f2fs/f2fs.h
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#ifndef _LINUX_F2FS_H
12#define _LINUX_F2FS_H
13
14#include <linux/types.h>
15#include <linux/page-flags.h>
16#include <linux/buffer_head.h>
39a53e0c
JK		 17#include <linux/slab.h>
18#include <linux/crc32.h>
19#include <linux/magic.h>
c2d715d1 20#include <linux/kobject.h>
7bd59381 21#include <linux/sched.h>
39a53e0c
JK		 22
23/*
24 * For mount options
25 */
26#define F2FS_MOUNT_BG_GC 0x00000001
27#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
28#define F2FS_MOUNT_DISCARD 0x00000004
29#define F2FS_MOUNT_NOHEAP 0x00000008
30#define F2FS_MOUNT_XATTR_USER 0x00000010
31#define F2FS_MOUNT_POSIX_ACL 0x00000020
32#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 33#define F2FS_MOUNT_INLINE_XATTR 0x00000080
39a53e0c
JK		 34
35#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
36#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
37#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
38
39#define ver_after(a, b) (typecheck(unsigned long long, a) && \
40 typecheck(unsigned long long, b) && \
41 ((long long)((a) - (b)) > 0))
42
a9841c4d
JK		 43typedef u32 block_t; /*
44 * should not change u32, since it is the on-disk block
45 * address format, __le32.
46 */
39a53e0c
JK		 47typedef u32 nid_t;
48
49struct f2fs_mount_info {
50 unsigned int opt;
51};
52
7e586fa0
JK		 53#define CRCPOLY_LE 0xedb88320
54
55static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 56{
7e586fa0
JK		 57 unsigned char *p = (unsigned char *)buf;
58 __u32 crc = F2FS_SUPER_MAGIC;
59 int i;
60
61 while (len--) {
62 crc ^= *p++;
63 for (i = 0; i < 8; i++)
64 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
65 }
66 return crc;
39a53e0c
JK		 67}
68
7e586fa0 69static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 70{
7e586fa0 71 return f2fs_crc32(buf, buf_size) == blk_crc;
39a53e0c
JK		 72}
73
74/*
75 * For checkpoint manager
76 */
77enum {
78 NAT_BITMAP,
79 SIT_BITMAP
80};
81
82/* for the list of orphan inodes */
83struct orphan_inode_entry {
84 struct list_head list; /* list head */
85 nid_t ino; /* inode number */
86};
87
88/* for the list of directory inodes */
89struct dir_inode_entry {
90 struct list_head list; /* list head */
91 struct inode *inode; /* vfs inode pointer */
92};
93
94/* for the list of fsync inodes, used only during recovery */
95struct fsync_inode_entry {
96 struct list_head list; /* list head */
97 struct inode *inode; /* vfs inode pointer */
98 block_t blkaddr; /* block address locating the last inode */
99};
100
101#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
102#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
103
104#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
105#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
106#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
107#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
108
109static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
110{
111 int before = nats_in_cursum(rs);
112 rs->n_nats = cpu_to_le16(before + i);
113 return before;
114}
115
116static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
117{
118 int before = sits_in_cursum(rs);
119 rs->n_sits = cpu_to_le16(before + i);
120 return before;
121}
122
e9750824
NJ		 123/*
124 * ioctl commands
125 */
126#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
127#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
128
129#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
130/*
131 * ioctl commands in 32 bit emulation
132 */
133#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
134#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
135#endif
136
39a53e0c
JK		 137/*
138 * For INODE and NODE manager
139 */
dbe6a5ff
JK		 140/*
141 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
142 * as its node offset to distinguish from index node blocks.
143 * But some bits are used to mark the node block.
144 */
145#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
146 >> OFFSET_BIT_SHIFT)
266e97a8
JK		 147enum {
148 ALLOC_NODE, /* allocate a new node page if needed */
149 LOOKUP_NODE, /* look up a node without readahead */
150 LOOKUP_NODE_RA, /*
151 * look up a node with readahead called
152 * by get_datablock_ro.
39a53e0c 153 */
266e97a8
JK		 154};
155
39a53e0c
JK		 156#define F2FS_LINK_MAX 32000 /* maximum link count per file */
157
158/* for in-memory extent cache entry */
159struct extent_info {
160 rwlock_t ext_lock; /* rwlock for consistency */
161 unsigned int fofs; /* start offset in a file */
162 u32 blk_addr; /* start block address of the extent */
111d2495 163 unsigned int len; /* length of the extent */
39a53e0c
JK		 164};
165
166/*
167 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
168 */
169#define FADVISE_COLD_BIT 0x01
354a3399 170#define FADVISE_LOST_PINO_BIT 0x02
39a53e0c
JK		 171
172struct f2fs_inode_info {
173 struct inode vfs_inode; /* serve a vfs inode */
174 unsigned long i_flags; /* keep an inode flags for ioctl */
175 unsigned char i_advise; /* use to give file attribute hints */
176 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 177 unsigned int i_pino; /* parent inode number */
39a53e0c
JK		 178 umode_t i_acl_mode; /* keep file acl mode temporarily */
179
180 /* Use below internally in f2fs*/
181 unsigned long flags; /* use to pass per-file flags */
39a53e0c
JK		 182 atomic_t dirty_dents; /* # of dirty dentry pages */
183 f2fs_hash_t chash; /* hash value of given file name */
184 unsigned int clevel; /* maximum level of given file name */
185 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 186 unsigned long long xattr_ver; /* cp version of xattr modification */
39a53e0c
JK		 187 struct extent_info ext; /* in-memory extent cache entry */
188};
189
190static inline void get_extent_info(struct extent_info *ext,
191 struct f2fs_extent i_ext)
192{
193 write_lock(&ext->ext_lock);
194 ext->fofs = le32_to_cpu(i_ext.fofs);
195 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
196 ext->len = le32_to_cpu(i_ext.len);
197 write_unlock(&ext->ext_lock);
198}
199
200static inline void set_raw_extent(struct extent_info *ext,
201 struct f2fs_extent *i_ext)
202{
203 read_lock(&ext->ext_lock);
204 i_ext->fofs = cpu_to_le32(ext->fofs);
205 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
206 i_ext->len = cpu_to_le32(ext->len);
207 read_unlock(&ext->ext_lock);
208}
209
210struct f2fs_nm_info {
211 block_t nat_blkaddr; /* base disk address of NAT */
212 nid_t max_nid; /* maximum possible node ids */
39a53e0c
JK		 213 nid_t next_scan_nid; /* the next nid to be scanned */
214
215 /* NAT cache management */
216 struct radix_tree_root nat_root;/* root of the nat entry cache */
217 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
218 unsigned int nat_cnt; /* the # of cached nat entries */
219 struct list_head nat_entries; /* cached nat entry list (clean) */
220 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
221
222 /* free node ids management */
223 struct list_head free_nid_list; /* a list for free nids */
224 spinlock_t free_nid_list_lock; /* protect free nid list */
225 unsigned int fcnt; /* the number of free node id */
226 struct mutex build_lock; /* lock for build free nids */
227
228 /* for checkpoint */
229 char *nat_bitmap; /* NAT bitmap pointer */
230 int bitmap_size; /* bitmap size */
231};
232
233/*
234 * this structure is used as one of function parameters.
235 * all the information are dedicated to a given direct node block determined
236 * by the data offset in a file.
237 */
238struct dnode_of_data {
239 struct inode *inode; /* vfs inode pointer */
240 struct page *inode_page; /* its inode page, NULL is possible */
241 struct page *node_page; /* cached direct node page */
242 nid_t nid; /* node id of the direct node block */
243 unsigned int ofs_in_node; /* data offset in the node page */
244 bool inode_page_locked; /* inode page is locked or not */
245 block_t data_blkaddr; /* block address of the node block */
246};
247
248static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
249 struct page *ipage, struct page *npage, nid_t nid)
250{
d66d1f76 251 memset(dn, 0, sizeof(*dn));
39a53e0c
JK		 252 dn->inode = inode;
253 dn->inode_page = ipage;
254 dn->node_page = npage;
255 dn->nid = nid;
39a53e0c
JK		 256}
257
258/*
259 * For SIT manager
260 *
261 * By default, there are 6 active log areas across the whole main area.
262 * When considering hot and cold data separation to reduce cleaning overhead,
263 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
264 * respectively.
265 * In the current design, you should not change the numbers intentionally.
266 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
267 * logs individually according to the underlying devices. (default: 6)
268 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
269 * data and 8 for node logs.
270 */
271#define NR_CURSEG_DATA_TYPE (3)
272#define NR_CURSEG_NODE_TYPE (3)
273#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
274
275enum {
276 CURSEG_HOT_DATA = 0, /* directory entry blocks */
277 CURSEG_WARM_DATA, /* data blocks */
278 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
279 CURSEG_HOT_NODE, /* direct node blocks of directory files */
280 CURSEG_WARM_NODE, /* direct node blocks of normal files */
281 CURSEG_COLD_NODE, /* indirect node blocks */
282 NO_CHECK_TYPE
283};
284
285struct f2fs_sm_info {
286 struct sit_info *sit_info; /* whole segment information */
287 struct free_segmap_info *free_info; /* free segment information */
288 struct dirty_seglist_info *dirty_info; /* dirty segment information */
289 struct curseg_info *curseg_array; /* active segment information */
290
291 struct list_head wblist_head; /* list of under-writeback pages */
292 spinlock_t wblist_lock; /* lock for checkpoint */
293
294 block_t seg0_blkaddr; /* block address of 0'th segment */
295 block_t main_blkaddr; /* start block address of main area */
296 block_t ssa_blkaddr; /* start block address of SSA area */
297
298 unsigned int segment_count; /* total # of segments */
299 unsigned int main_segments; /* # of segments in main area */
300 unsigned int reserved_segments; /* # of reserved segments */
301 unsigned int ovp_segments; /* # of overprovision segments */
302};
303
39a53e0c
JK		 304/*
305 * For superblock
306 */
307/*
308 * COUNT_TYPE for monitoring
309 *
310 * f2fs monitors the number of several block types such as on-writeback,
311 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
312 */
313enum count_type {
314 F2FS_WRITEBACK,
315 F2FS_DIRTY_DENTS,
316 F2FS_DIRTY_NODES,
317 F2FS_DIRTY_META,
318 NR_COUNT_TYPE,
319};
320
39a53e0c
JK		 321/*
322 * The below are the page types of bios used in submti_bio().
323 * The available types are:
324 * DATA User data pages. It operates as async mode.
325 * NODE Node pages. It operates as async mode.
326 * META FS metadata pages such as SIT, NAT, CP.
327 * NR_PAGE_TYPE The number of page types.
328 * META_FLUSH Make sure the previous pages are written
329 * with waiting the bio's completion
330 * ... Only can be used with META.
331 */
332enum page_type {
333 DATA,
334 NODE,
335 META,
336 NR_PAGE_TYPE,
337 META_FLUSH,
338};
339
340struct f2fs_sb_info {
341 struct super_block *sb; /* pointer to VFS super block */
5e176d54 342 struct proc_dir_entry *s_proc; /* proc entry */
39a53e0c
JK		 343 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
344 struct f2fs_super_block *raw_super; /* raw super block pointer */
345 int s_dirty; /* dirty flag for checkpoint */
346
347 /* for node-related operations */
348 struct f2fs_nm_info *nm_info; /* node manager */
349 struct inode *node_inode; /* cache node blocks */
350
351 /* for segment-related operations */
352 struct f2fs_sm_info *sm_info; /* segment manager */
353 struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */
354 sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */
355 struct rw_semaphore bio_sem; /* IO semaphore */
356
357 /* for checkpoint */
358 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
359 struct inode *meta_inode; /* cache meta blocks */
39936837 360 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 361 struct rw_semaphore cp_rwsem; /* blocking FS operations */
39936837 362 struct mutex node_write; /* locking node writes */
39a53e0c 363 struct mutex writepages; /* mutex for writepages() */
aabe5136
HL		 364 bool por_doing; /* recovery is doing or not */
365 bool on_build_free_nids; /* build_free_nids is doing */
e2340887 366 struct task_struct *cp_task; /* checkpoint task */
39a53e0c
JK		 367
368 /* for orphan inode management */
369 struct list_head orphan_inode_list; /* orphan inode list */
370 struct mutex orphan_inode_mutex; /* for orphan inode list */
371 unsigned int n_orphans; /* # of orphan inodes */
372
373 /* for directory inode management */
374 struct list_head dir_inode_list; /* dir inode list */
375 spinlock_t dir_inode_lock; /* for dir inode list lock */
39a53e0c
JK		 376
377 /* basic file system units */
378 unsigned int log_sectors_per_block; /* log2 sectors per block */
379 unsigned int log_blocksize; /* log2 block size */
380 unsigned int blocksize; /* block size */
381 unsigned int root_ino_num; /* root inode number*/
382 unsigned int node_ino_num; /* node inode number*/
383 unsigned int meta_ino_num; /* meta inode number*/
384 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
385 unsigned int blocks_per_seg; /* blocks per segment */
386 unsigned int segs_per_sec; /* segments per section */
387 unsigned int secs_per_zone; /* sections per zone */
388 unsigned int total_sections; /* total section count */
389 unsigned int total_node_count; /* total node block count */
390 unsigned int total_valid_node_count; /* valid node block count */
391 unsigned int total_valid_inode_count; /* valid inode count */
392 int active_logs; /* # of active logs */
393
394 block_t user_block_count; /* # of user blocks */
395 block_t total_valid_block_count; /* # of valid blocks */
396 block_t alloc_valid_block_count; /* # of allocated blocks */
397 block_t last_valid_block_count; /* for recovery */
398 u32 s_next_generation; /* for NFS support */
399 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
400
401 struct f2fs_mount_info mount_opt; /* mount options */
402
403 /* for cleaning operations */
404 struct mutex gc_mutex; /* mutex for GC */
405 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 406 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c
JK		 407
408 /*
409 * for stat information.
410 * one is for the LFS mode, and the other is for the SSR mode.
411 */
35b09d82 412#ifdef CONFIG_F2FS_STAT_FS
39a53e0c
JK		 413 struct f2fs_stat_info *stat_info; /* FS status information */
414 unsigned int segment_count[2]; /* # of allocated segments */
415 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c
JK		 416 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
417 int bg_gc; /* background gc calls */
35b09d82
NJ		 418 unsigned int n_dirty_dirs; /* # of dir inodes */
419#endif
420 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 421 spinlock_t stat_lock; /* lock for stat operations */
b59d0bae
NJ		 422
423 /* For sysfs suppport */
424 struct kobject s_kobj;
425 struct completion s_kobj_unregister;
39a53e0c
JK		 426};
427
428/*
429 * Inline functions
430 */
431static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
432{
433 return container_of(inode, struct f2fs_inode_info, vfs_inode);
434}
435
436static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
437{
438 return sb->s_fs_info;
439}
440
441static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
442{
443 return (struct f2fs_super_block *)(sbi->raw_super);
444}
445
446static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
447{
448 return (struct f2fs_checkpoint *)(sbi->ckpt);
449}
450
45590710
GZ		 451static inline struct f2fs_node *F2FS_NODE(struct page *page)
452{
453 return (struct f2fs_node *)page_address(page);
454}
455
39a53e0c
JK		 456static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
457{
458 return (struct f2fs_nm_info *)(sbi->nm_info);
459}
460
461static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
462{
463 return (struct f2fs_sm_info *)(sbi->sm_info);
464}
465
466static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
467{
468 return (struct sit_info *)(SM_I(sbi)->sit_info);
469}
470
471static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
472{
473 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
474}
475
476static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
477{
478 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
479}
480
481static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
482{
483 sbi->s_dirty = 1;
484}
485
486static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
487{
488 sbi->s_dirty = 0;
489}
490
d71b5564
JK		 491static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
492{
493 return le64_to_cpu(cp->checkpoint_ver);
494}
495
25ca923b
JK		 496static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
497{
498 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
499 return ckpt_flags & f;
500}
501
502static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
503{
504 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
505 ckpt_flags |= f;
506 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
507}
508
509static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
510{
511 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
512 ckpt_flags &= (~f);
513 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
514}
515
e479556b 516static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 517{
e479556b 518 down_read(&sbi->cp_rwsem);
39936837
JK		 519}
520
e479556b 521static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 522{
e479556b 523 up_read(&sbi->cp_rwsem);
39a53e0c
JK		 524}
525
e479556b 526static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 527{
e479556b 528 down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK		 529}
530
e479556b 531static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 532{
e479556b 533 up_write(&sbi->cp_rwsem);
39a53e0c
JK		 534}
535
536/*
537 * Check whether the given nid is within node id range.
538 */
064e0823 539static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 540{
064e0823
NJ		 541 WARN_ON((nid >= NM_I(sbi)->max_nid));
542 if (nid >= NM_I(sbi)->max_nid)
543 return -EINVAL;
544 return 0;
39a53e0c
JK		 545}
546
547#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
548
549/*
550 * Check whether the inode has blocks or not
551 */
552static inline int F2FS_HAS_BLOCKS(struct inode *inode)
553{
554 if (F2FS_I(inode)->i_xattr_nid)
555 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1);
556 else
557 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS);
558}
559
560static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
561 struct inode *inode, blkcnt_t count)
562{
563 block_t valid_block_count;
564
565 spin_lock(&sbi->stat_lock);
566 valid_block_count =
567 sbi->total_valid_block_count + (block_t)count;
568 if (valid_block_count > sbi->user_block_count) {
569 spin_unlock(&sbi->stat_lock);
570 return false;
571 }
572 inode->i_blocks += count;
573 sbi->total_valid_block_count = valid_block_count;
574 sbi->alloc_valid_block_count += (block_t)count;
575 spin_unlock(&sbi->stat_lock);
576 return true;
577}
578
579static inline int dec_valid_block_count(struct f2fs_sb_info *sbi,
580 struct inode *inode,
581 blkcnt_t count)
582{
583 spin_lock(&sbi->stat_lock);
584 BUG_ON(sbi->total_valid_block_count < (block_t) count);
585 BUG_ON(inode->i_blocks < count);
586 inode->i_blocks -= count;
587 sbi->total_valid_block_count -= (block_t)count;
588 spin_unlock(&sbi->stat_lock);
589 return 0;
590}
591
592static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
593{
594 atomic_inc(&sbi->nr_pages[count_type]);
595 F2FS_SET_SB_DIRT(sbi);
596}
597
598static inline void inode_inc_dirty_dents(struct inode *inode)
599{
600 atomic_inc(&F2FS_I(inode)->dirty_dents);
601}
602
603static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
604{
605 atomic_dec(&sbi->nr_pages[count_type]);
606}
607
608static inline void inode_dec_dirty_dents(struct inode *inode)
609{
610 atomic_dec(&F2FS_I(inode)->dirty_dents);
611}
612
613static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
614{
615 return atomic_read(&sbi->nr_pages[count_type]);
616}
617
5ac206cf
NJ		 618static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
619{
620 unsigned int pages_per_sec = sbi->segs_per_sec *
621 (1 << sbi->log_blocks_per_seg);
622 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
623 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
624}
625
39a53e0c
JK		 626static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
627{
628 block_t ret;
629 spin_lock(&sbi->stat_lock);
630 ret = sbi->total_valid_block_count;
631 spin_unlock(&sbi->stat_lock);
632 return ret;
633}
634
635static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
636{
637 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
638
639 /* return NAT or SIT bitmap */
640 if (flag == NAT_BITMAP)
641 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
642 else if (flag == SIT_BITMAP)
643 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
644
645 return 0;
646}
647
648static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
649{
650 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
25ca923b
JK		 651 int offset = (flag == NAT_BITMAP) ?
652 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
39a53e0c
JK		 653 return &ckpt->sit_nat_version_bitmap + offset;
654}
655
656static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
657{
658 block_t start_addr;
659 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 660 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 661
25ca923b 662 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK		 663
664 /*
665 * odd numbered checkpoint should at cp segment 0
666 * and even segent must be at cp segment 1
667 */
668 if (!(ckpt_version & 1))
669 start_addr += sbi->blocks_per_seg;
670
671 return start_addr;
672}
673
674static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
675{
676 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
677}
678
679static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
680 struct inode *inode,
681 unsigned int count)
682{
683 block_t valid_block_count;
684 unsigned int valid_node_count;
685
686 spin_lock(&sbi->stat_lock);
687
688 valid_block_count = sbi->total_valid_block_count + (block_t)count;
689 sbi->alloc_valid_block_count += (block_t)count;
690 valid_node_count = sbi->total_valid_node_count + count;
691
692 if (valid_block_count > sbi->user_block_count) {
693 spin_unlock(&sbi->stat_lock);
694 return false;
695 }
696
697 if (valid_node_count > sbi->total_node_count) {
698 spin_unlock(&sbi->stat_lock);
699 return false;
700 }
701
702 if (inode)
703 inode->i_blocks += count;
704 sbi->total_valid_node_count = valid_node_count;
705 sbi->total_valid_block_count = valid_block_count;
706 spin_unlock(&sbi->stat_lock);
707
708 return true;
709}
710
711static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
712 struct inode *inode,
713 unsigned int count)
714{
715 spin_lock(&sbi->stat_lock);
716
717 BUG_ON(sbi->total_valid_block_count < count);
718 BUG_ON(sbi->total_valid_node_count < count);
719 BUG_ON(inode->i_blocks < count);
720
721 inode->i_blocks -= count;
722 sbi->total_valid_node_count -= count;
723 sbi->total_valid_block_count -= (block_t)count;
724
725 spin_unlock(&sbi->stat_lock);
726}
727
728static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
729{
730 unsigned int ret;
731 spin_lock(&sbi->stat_lock);
732 ret = sbi->total_valid_node_count;
733 spin_unlock(&sbi->stat_lock);
734 return ret;
735}
736
737static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
738{
739 spin_lock(&sbi->stat_lock);
740 BUG_ON(sbi->total_valid_inode_count == sbi->total_node_count);
741 sbi->total_valid_inode_count++;
742 spin_unlock(&sbi->stat_lock);
743}
744
745static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi)
746{
747 spin_lock(&sbi->stat_lock);
748 BUG_ON(!sbi->total_valid_inode_count);
749 sbi->total_valid_inode_count--;
750 spin_unlock(&sbi->stat_lock);
751 return 0;
752}
753
754static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
755{
756 unsigned int ret;
757 spin_lock(&sbi->stat_lock);
758 ret = sbi->total_valid_inode_count;
759 spin_unlock(&sbi->stat_lock);
760 return ret;
761}
762
763static inline void f2fs_put_page(struct page *page, int unlock)
764{
765 if (!page || IS_ERR(page))
766 return;
767
768 if (unlock) {
769 BUG_ON(!PageLocked(page));
770 unlock_page(page);
771 }
772 page_cache_release(page);
773}
774
775static inline void f2fs_put_dnode(struct dnode_of_data *dn)
776{
777 if (dn->node_page)
778 f2fs_put_page(dn->node_page, 1);
779 if (dn->inode_page && dn->node_page != dn->inode_page)
780 f2fs_put_page(dn->inode_page, 0);
781 dn->node_page = NULL;
782 dn->inode_page = NULL;
783}
784
785static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
786 size_t size, void (*ctor)(void *))
787{
788 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor);
789}
790
7bd59381
GZ		 791static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
792 gfp_t flags)
793{
794 void *entry;
795retry:
796 entry = kmem_cache_alloc(cachep, flags);
797 if (!entry) {
798 cond_resched();
799 goto retry;
800 }
801
802 return entry;
803}
804
39a53e0c
JK		 805#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
806
807static inline bool IS_INODE(struct page *page)
808{
45590710 809 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK		 810 return RAW_IS_INODE(p);
811}
812
813static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
814{
815 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
816}
817
818static inline block_t datablock_addr(struct page *node_page,
819 unsigned int offset)
820{
821 struct f2fs_node *raw_node;
822 __le32 *addr_array;
45590710 823 raw_node = F2FS_NODE(node_page);
39a53e0c
JK		 824 addr_array = blkaddr_in_node(raw_node);
825 return le32_to_cpu(addr_array[offset]);
826}
827
828static inline int f2fs_test_bit(unsigned int nr, char *addr)
829{
830 int mask;
831
832 addr += (nr >> 3);
833 mask = 1 << (7 - (nr & 0x07));
834 return mask & *addr;
835}
836
837static inline int f2fs_set_bit(unsigned int nr, char *addr)
838{
839 int mask;
840 int ret;
841
842 addr += (nr >> 3);
843 mask = 1 << (7 - (nr & 0x07));
844 ret = mask & *addr;
845 *addr |= mask;
846 return ret;
847}
848
849static inline int f2fs_clear_bit(unsigned int nr, char *addr)
850{
851 int mask;
852 int ret;
853
854 addr += (nr >> 3);
855 mask = 1 << (7 - (nr & 0x07));
856 ret = mask & *addr;
857 *addr &= ~mask;
858 return ret;
859}
860
861/* used for f2fs_inode_info->flags */
862enum {
863 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 864 FI_DIRTY_INODE, /* indicate inode is dirty or not */
39a53e0c
JK		 865 FI_INC_LINK, /* need to increment i_nlink */
866 FI_ACL_MODE, /* indicate acl mode */
867 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 868 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 869 FI_DELAY_IPUT, /* used for the recovery */
444c580f 870 FI_INLINE_XATTR, /* used for inline xattr */
39a53e0c
JK		 871};
872
873static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
874{
875 set_bit(flag, &fi->flags);
876}
877
878static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
879{
880 return test_bit(flag, &fi->flags);
881}
882
883static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
884{
885 clear_bit(flag, &fi->flags);
886}
887
888static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
889{
890 fi->i_acl_mode = mode;
891 set_inode_flag(fi, FI_ACL_MODE);
892}
893
894static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
895{
896 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
897 clear_inode_flag(fi, FI_ACL_MODE);
898 return 1;
899 }
900 return 0;
901}
902
444c580f
JK		 903static inline void get_inline_info(struct f2fs_inode_info *fi,
904 struct f2fs_inode *ri)
905{
906 if (ri->i_inline & F2FS_INLINE_XATTR)
907 set_inode_flag(fi, FI_INLINE_XATTR);
908}
909
910static inline void set_raw_inline(struct f2fs_inode_info *fi,
911 struct f2fs_inode *ri)
912{
913 ri->i_inline = 0;
914
915 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
916 ri->i_inline |= F2FS_INLINE_XATTR;
917}
918
de93653f
JK		 919static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
920{
921 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
922 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
923 return DEF_ADDRS_PER_INODE;
924}
925
65985d93
JK		 926static inline void *inline_xattr_addr(struct page *page)
927{
928 struct f2fs_inode *ri;
929 ri = (struct f2fs_inode *)page_address(page);
930 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
931 F2FS_INLINE_XATTR_ADDRS]);
932}
933
934static inline int inline_xattr_size(struct inode *inode)
935{
936 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
937 return F2FS_INLINE_XATTR_ADDRS << 2;
938 else
939 return 0;
940}
941
77888c1e
JK		 942static inline int f2fs_readonly(struct super_block *sb)
943{
944 return sb->s_flags & MS_RDONLY;
945}
946
39a53e0c
JK		 947/*
948 * file.c
949 */
950int f2fs_sync_file(struct file *, loff_t, loff_t, int);
951void truncate_data_blocks(struct dnode_of_data *);
952void f2fs_truncate(struct inode *);
2d4d9fb5 953int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK		 954int f2fs_setattr(struct dentry *, struct iattr *);
955int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 956int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 957long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 958long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK		 959
960/*
961 * inode.c
962 */
963void f2fs_set_inode_flags(struct inode *);
39a53e0c
JK		 964struct inode *f2fs_iget(struct super_block *, unsigned long);
965void update_inode(struct inode *, struct page *);
39936837 966int update_inode_page(struct inode *);
39a53e0c
JK		 967int f2fs_write_inode(struct inode *, struct writeback_control *);
968void f2fs_evict_inode(struct inode *);
969
970/*
971 * namei.c
972 */
973struct dentry *f2fs_get_parent(struct dentry *child);
974
975/*
976 * dir.c
977 */
978struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
979 struct page **);
980struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
981ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
982void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
983 struct page *, struct inode *);
1cd14caf 984int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 985int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c
JK		 986void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
987int f2fs_make_empty(struct inode *, struct inode *);
988bool f2fs_empty_dir(struct inode *);
989
b7f7a5e0
AV		 990static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
991{
992 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
993 inode);
994}
995
39a53e0c
JK		 996/*
997 * super.c
998 */
999int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ		 1000extern __printf(3, 4)
1001void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK		 1002
1003/*
1004 * hash.c
1005 */
9836b8b9 1006f2fs_hash_t f2fs_dentry_hash(const char *, size_t);
39a53e0c
JK		 1007
1008/*
1009 * node.c
1010 */
1011struct dnode_of_data;
1012struct node_info;
1013
1014int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1015void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1016int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1017int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1018int truncate_xattr_node(struct inode *, struct page *);
39a53e0c 1019int remove_inode_page(struct inode *);
44a83ff6 1020struct page *new_inode_page(struct inode *, const struct qstr *);
8ae8f162 1021struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK		 1022void ra_node_page(struct f2fs_sb_info *, nid_t);
1023struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1024struct page *get_node_page_ra(struct page *, int);
1025void sync_inode_page(struct dnode_of_data *);
1026int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1027bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1028void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1029void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1030void recover_node_page(struct f2fs_sb_info *, struct page *,
1031 struct f2fs_summary *, struct node_info *, block_t);
1032int recover_inode_page(struct f2fs_sb_info *, struct page *);
1033int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1034 struct f2fs_summary_block *);
1035void flush_nat_entries(struct f2fs_sb_info *);
1036int build_node_manager(struct f2fs_sb_info *);
1037void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1038int __init create_node_manager_caches(void);
39a53e0c
JK		 1039void destroy_node_manager_caches(void);
1040
1041/*
1042 * segment.c
1043 */
1044void f2fs_balance_fs(struct f2fs_sb_info *);
1045void invalidate_blocks(struct f2fs_sb_info *, block_t);
39a53e0c
JK		 1046void clear_prefree_segments(struct f2fs_sb_info *);
1047int npages_for_summary_flush(struct f2fs_sb_info *);
1048void allocate_new_segments(struct f2fs_sb_info *);
1049struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
3cd8a239 1050struct bio *f2fs_bio_alloc(struct block_device *, int);
a569469e
JX		 1051void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool);
1052void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
577e3495 1053void write_meta_page(struct f2fs_sb_info *, struct page *);
39a53e0c
JK		 1054void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int,
1055 block_t, block_t *);
1056void write_data_page(struct inode *, struct page *, struct dnode_of_data*,
1057 block_t, block_t *);
1058void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t);
1059void recover_data_page(struct f2fs_sb_info *, struct page *,
1060 struct f2fs_summary *, block_t, block_t);
1061void rewrite_node_page(struct f2fs_sb_info *, struct page *,
1062 struct f2fs_summary *, block_t, block_t);
1063void write_data_summaries(struct f2fs_sb_info *, block_t);
1064void write_node_summaries(struct f2fs_sb_info *, block_t);
1065int lookup_journal_in_cursum(struct f2fs_summary_block *,
1066 int, unsigned int, int);
1067void flush_sit_entries(struct f2fs_sb_info *);
1068int build_segment_manager(struct f2fs_sb_info *);
39a53e0c
JK		 1069void destroy_segment_manager(struct f2fs_sb_info *);
1070
1071/*
1072 * checkpoint.c
1073 */
1074struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1075struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1076long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
cbd56e7d
JK		 1077int acquire_orphan_inode(struct f2fs_sb_info *);
1078void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK		 1079void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1080void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1081int recover_orphan_inodes(struct f2fs_sb_info *);
1082int get_valid_checkpoint(struct f2fs_sb_info *);
1083void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1084void add_dirty_dir_inode(struct inode *);
39a53e0c 1085void remove_dirty_dir_inode(struct inode *);
74d0b917 1086struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t);
39a53e0c 1087void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1088void write_checkpoint(struct f2fs_sb_info *, bool);
39a53e0c 1089void init_orphan_info(struct f2fs_sb_info *);
6e6093a8 1090int __init create_checkpoint_caches(void);
39a53e0c
JK		 1091void destroy_checkpoint_caches(void);
1092
1093/*
1094 * data.c
1095 */
1096int reserve_new_block(struct dnode_of_data *);
1097void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1098struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1099struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1100struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
39a53e0c
JK		 1101int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int);
1102int do_write_data_page(struct page *);
1103
1104/*
1105 * gc.c
1106 */
1107int start_gc_thread(struct f2fs_sb_info *);
1108void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1109block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1110int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1111void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1112int __init create_gc_caches(void);
39a53e0c
JK		 1113void destroy_gc_caches(void);
1114
1115/*
1116 * recovery.c
1117 */
6ead1142 1118int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK		 1119bool space_for_roll_forward(struct f2fs_sb_info *);
1120
1121/*
1122 * debug.c
1123 */
1124#ifdef CONFIG_F2FS_STAT_FS
1125struct f2fs_stat_info {
1126 struct list_head stat_list;
1127 struct f2fs_sb_info *sbi;
1128 struct mutex stat_lock;
1129 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1130 int main_area_segs, main_area_sections, main_area_zones;
1131 int hit_ext, total_ext;
1132 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1133 int nats, sits, fnids;
1134 int total_count, utilization;
1135 int bg_gc;
1136 unsigned int valid_count, valid_node_count, valid_inode_count;
1137 unsigned int bimodal, avg_vblocks;
1138 int util_free, util_valid, util_invalid;
1139 int rsvd_segs, overp_segs;
1140 int dirty_count, node_pages, meta_pages;
1141 int prefree_count, call_count;
1142 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1143 int tot_blks, data_blks, node_blks;
1144 int curseg[NR_CURSEG_TYPE];
1145 int cursec[NR_CURSEG_TYPE];
1146 int curzone[NR_CURSEG_TYPE];
1147
1148 unsigned int segment_count[2];
1149 unsigned int block_count[2];
1150 unsigned base_mem, cache_mem;
1151};
1152
963d4f7d
GZ		 1153static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1154{
1155 return (struct f2fs_stat_info*)sbi->stat_info;
1156}
1157
dcdfff65
JK		 1158#define stat_inc_call_count(si) ((si)->call_count++)
1159#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1160#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1161#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1162#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1163#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1164#define stat_inc_seg_type(sbi, curseg) \
1165 ((sbi)->segment_count[(curseg)->alloc_type]++)
1166#define stat_inc_block_count(sbi, curseg) \
1167 ((sbi)->block_count[(curseg)->alloc_type]++)
39a53e0c
JK		 1168
1169#define stat_inc_seg_count(sbi, type) \
1170 do { \
963d4f7d 1171 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1172 (si)->tot_segs++; \
1173 if (type == SUM_TYPE_DATA) \
1174 si->data_segs++; \
1175 else \
1176 si->node_segs++; \
1177 } while (0)
1178
1179#define stat_inc_tot_blk_count(si, blks) \
1180 (si->tot_blks += (blks))
1181
1182#define stat_inc_data_blk_count(sbi, blks) \
1183 do { \
963d4f7d 1184 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1185 stat_inc_tot_blk_count(si, blks); \
1186 si->data_blks += (blks); \
1187 } while (0)
1188
1189#define stat_inc_node_blk_count(sbi, blks) \
1190 do { \
963d4f7d 1191 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1192 stat_inc_tot_blk_count(si, blks); \
1193 si->node_blks += (blks); \
1194 } while (0)
1195
1196int f2fs_build_stats(struct f2fs_sb_info *);
1197void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1198void __init f2fs_create_root_stats(void);
4589d25d 1199void f2fs_destroy_root_stats(void);
39a53e0c
JK		 1200#else
1201#define stat_inc_call_count(si)
dcdfff65
JK		 1202#define stat_inc_bggc_count(si)
1203#define stat_inc_dirty_dir(sbi)
1204#define stat_dec_dirty_dir(sbi)
1205#define stat_inc_total_hit(sb)
1206#define stat_inc_read_hit(sb)
1207#define stat_inc_seg_type(sbi, curseg)
1208#define stat_inc_block_count(sbi, curseg)
39a53e0c
JK		 1209#define stat_inc_seg_count(si, type)
1210#define stat_inc_tot_blk_count(si, blks)
1211#define stat_inc_data_blk_count(si, blks)
1212#define stat_inc_node_blk_count(sbi, blks)
1213
1214static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1215static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1216static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1217static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK		 1218#endif
1219
1220extern const struct file_operations f2fs_dir_operations;
1221extern const struct file_operations f2fs_file_operations;
1222extern const struct inode_operations f2fs_file_inode_operations;
1223extern const struct address_space_operations f2fs_dblock_aops;
1224extern const struct address_space_operations f2fs_node_aops;
1225extern const struct address_space_operations f2fs_meta_aops;
1226extern const struct inode_operations f2fs_dir_inode_operations;
1227extern const struct inode_operations f2fs_symlink_inode_operations;
1228extern const struct inode_operations f2fs_special_inode_operations;
1229#endif
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