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f2fs: use sbi->write_mutex for write bios
[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / fs / f2fs / f2fs.h
CommitLineData
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 22
5d56b671
JK		 23#ifdef CONFIG_F2FS_CHECK_FS
24#define f2fs_bug_on(condition) BUG_ON(condition)
25#else
26#define f2fs_bug_on(condition)
27#endif
28
39a53e0c
JK		 29/*
30 * For mount options
31 */
32#define F2FS_MOUNT_BG_GC 0x00000001
33#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
34#define F2FS_MOUNT_DISCARD 0x00000004
35#define F2FS_MOUNT_NOHEAP 0x00000008
36#define F2FS_MOUNT_XATTR_USER 0x00000010
37#define F2FS_MOUNT_POSIX_ACL 0x00000020
38#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 39#define F2FS_MOUNT_INLINE_XATTR 0x00000080
39a53e0c
JK		 40
41#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
42#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
43#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
44
45#define ver_after(a, b) (typecheck(unsigned long long, a) && \
46 typecheck(unsigned long long, b) && \
47 ((long long)((a) - (b)) > 0))
48
a9841c4d
JK		 49typedef u32 block_t; /*
50 * should not change u32, since it is the on-disk block
51 * address format, __le32.
52 */
39a53e0c
JK		 53typedef u32 nid_t;
54
55struct f2fs_mount_info {
56 unsigned int opt;
57};
58
7e586fa0
JK		 59#define CRCPOLY_LE 0xedb88320
60
61static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 62{
7e586fa0
JK		 63 unsigned char *p = (unsigned char *)buf;
64 __u32 crc = F2FS_SUPER_MAGIC;
65 int i;
66
67 while (len--) {
68 crc ^= *p++;
69 for (i = 0; i < 8; i++)
70 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
71 }
72 return crc;
39a53e0c
JK		 73}
74
7e586fa0 75static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 76{
7e586fa0 77 return f2fs_crc32(buf, buf_size) == blk_crc;
39a53e0c
JK		 78}
79
80/*
81 * For checkpoint manager
82 */
83enum {
84 NAT_BITMAP,
85 SIT_BITMAP
86};
87
88/* for the list of orphan inodes */
89struct orphan_inode_entry {
90 struct list_head list; /* list head */
91 nid_t ino; /* inode number */
92};
93
94/* for the list of directory inodes */
95struct dir_inode_entry {
96 struct list_head list; /* list head */
97 struct inode *inode; /* vfs inode pointer */
98};
99
7fd9e544
JK		 100/* for the list of blockaddresses to be discarded */
101struct discard_entry {
102 struct list_head list; /* list head */
103 block_t blkaddr; /* block address to be discarded */
104 int len; /* # of consecutive blocks of the discard */
105};
106
39a53e0c
JK		 107/* for the list of fsync inodes, used only during recovery */
108struct fsync_inode_entry {
109 struct list_head list; /* list head */
110 struct inode *inode; /* vfs inode pointer */
111 block_t blkaddr; /* block address locating the last inode */
112};
113
114#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
115#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
116
117#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
118#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
119#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
120#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
121
122static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
123{
124 int before = nats_in_cursum(rs);
125 rs->n_nats = cpu_to_le16(before + i);
126 return before;
127}
128
129static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
130{
131 int before = sits_in_cursum(rs);
132 rs->n_sits = cpu_to_le16(before + i);
133 return before;
134}
135
e9750824
NJ		 136/*
137 * ioctl commands
138 */
139#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
140#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
141
142#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
143/*
144 * ioctl commands in 32 bit emulation
145 */
146#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
147#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
148#endif
149
39a53e0c
JK		 150/*
151 * For INODE and NODE manager
152 */
dbe6a5ff
JK		 153/*
154 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
155 * as its node offset to distinguish from index node blocks.
156 * But some bits are used to mark the node block.
157 */
158#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
159 >> OFFSET_BIT_SHIFT)
266e97a8
JK		 160enum {
161 ALLOC_NODE, /* allocate a new node page if needed */
162 LOOKUP_NODE, /* look up a node without readahead */
163 LOOKUP_NODE_RA, /*
164 * look up a node with readahead called
165 * by get_datablock_ro.
39a53e0c 166 */
266e97a8
JK		 167};
168
39a53e0c
JK		 169#define F2FS_LINK_MAX 32000 /* maximum link count per file */
170
171/* for in-memory extent cache entry */
172struct extent_info {
173 rwlock_t ext_lock; /* rwlock for consistency */
174 unsigned int fofs; /* start offset in a file */
175 u32 blk_addr; /* start block address of the extent */
111d2495 176 unsigned int len; /* length of the extent */
39a53e0c
JK		 177};
178
179/*
180 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
181 */
182#define FADVISE_COLD_BIT 0x01
354a3399 183#define FADVISE_LOST_PINO_BIT 0x02
39a53e0c
JK		 184
185struct f2fs_inode_info {
186 struct inode vfs_inode; /* serve a vfs inode */
187 unsigned long i_flags; /* keep an inode flags for ioctl */
188 unsigned char i_advise; /* use to give file attribute hints */
189 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 190 unsigned int i_pino; /* parent inode number */
39a53e0c
JK		 191 umode_t i_acl_mode; /* keep file acl mode temporarily */
192
193 /* Use below internally in f2fs*/
194 unsigned long flags; /* use to pass per-file flags */
39a53e0c
JK		 195 atomic_t dirty_dents; /* # of dirty dentry pages */
196 f2fs_hash_t chash; /* hash value of given file name */
197 unsigned int clevel; /* maximum level of given file name */
198 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 199 unsigned long long xattr_ver; /* cp version of xattr modification */
39a53e0c
JK		 200 struct extent_info ext; /* in-memory extent cache entry */
201};
202
203static inline void get_extent_info(struct extent_info *ext,
204 struct f2fs_extent i_ext)
205{
206 write_lock(&ext->ext_lock);
207 ext->fofs = le32_to_cpu(i_ext.fofs);
208 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
209 ext->len = le32_to_cpu(i_ext.len);
210 write_unlock(&ext->ext_lock);
211}
212
213static inline void set_raw_extent(struct extent_info *ext,
214 struct f2fs_extent *i_ext)
215{
216 read_lock(&ext->ext_lock);
217 i_ext->fofs = cpu_to_le32(ext->fofs);
218 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
219 i_ext->len = cpu_to_le32(ext->len);
220 read_unlock(&ext->ext_lock);
221}
222
223struct f2fs_nm_info {
224 block_t nat_blkaddr; /* base disk address of NAT */
225 nid_t max_nid; /* maximum possible node ids */
39a53e0c
JK		 226 nid_t next_scan_nid; /* the next nid to be scanned */
227
228 /* NAT cache management */
229 struct radix_tree_root nat_root;/* root of the nat entry cache */
230 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
231 unsigned int nat_cnt; /* the # of cached nat entries */
232 struct list_head nat_entries; /* cached nat entry list (clean) */
233 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
234
235 /* free node ids management */
236 struct list_head free_nid_list; /* a list for free nids */
237 spinlock_t free_nid_list_lock; /* protect free nid list */
238 unsigned int fcnt; /* the number of free node id */
239 struct mutex build_lock; /* lock for build free nids */
240
241 /* for checkpoint */
242 char *nat_bitmap; /* NAT bitmap pointer */
243 int bitmap_size; /* bitmap size */
244};
245
246/*
247 * this structure is used as one of function parameters.
248 * all the information are dedicated to a given direct node block determined
249 * by the data offset in a file.
250 */
251struct dnode_of_data {
252 struct inode *inode; /* vfs inode pointer */
253 struct page *inode_page; /* its inode page, NULL is possible */
254 struct page *node_page; /* cached direct node page */
255 nid_t nid; /* node id of the direct node block */
256 unsigned int ofs_in_node; /* data offset in the node page */
257 bool inode_page_locked; /* inode page is locked or not */
258 block_t data_blkaddr; /* block address of the node block */
259};
260
261static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
262 struct page *ipage, struct page *npage, nid_t nid)
263{
d66d1f76 264 memset(dn, 0, sizeof(*dn));
39a53e0c
JK		 265 dn->inode = inode;
266 dn->inode_page = ipage;
267 dn->node_page = npage;
268 dn->nid = nid;
39a53e0c
JK		 269}
270
271/*
272 * For SIT manager
273 *
274 * By default, there are 6 active log areas across the whole main area.
275 * When considering hot and cold data separation to reduce cleaning overhead,
276 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
277 * respectively.
278 * In the current design, you should not change the numbers intentionally.
279 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
280 * logs individually according to the underlying devices. (default: 6)
281 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
282 * data and 8 for node logs.
283 */
284#define NR_CURSEG_DATA_TYPE (3)
285#define NR_CURSEG_NODE_TYPE (3)
286#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
287
288enum {
289 CURSEG_HOT_DATA = 0, /* directory entry blocks */
290 CURSEG_WARM_DATA, /* data blocks */
291 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
292 CURSEG_HOT_NODE, /* direct node blocks of directory files */
293 CURSEG_WARM_NODE, /* direct node blocks of normal files */
294 CURSEG_COLD_NODE, /* indirect node blocks */
295 NO_CHECK_TYPE
296};
297
298struct f2fs_sm_info {
299 struct sit_info *sit_info; /* whole segment information */
300 struct free_segmap_info *free_info; /* free segment information */
301 struct dirty_seglist_info *dirty_info; /* dirty segment information */
302 struct curseg_info *curseg_array; /* active segment information */
303
304 struct list_head wblist_head; /* list of under-writeback pages */
305 spinlock_t wblist_lock; /* lock for checkpoint */
306
307 block_t seg0_blkaddr; /* block address of 0'th segment */
308 block_t main_blkaddr; /* start block address of main area */
309 block_t ssa_blkaddr; /* start block address of SSA area */
310
311 unsigned int segment_count; /* total # of segments */
312 unsigned int main_segments; /* # of segments in main area */
313 unsigned int reserved_segments; /* # of reserved segments */
314 unsigned int ovp_segments; /* # of overprovision segments */
81eb8d6e
JK		 315
316 /* a threshold to reclaim prefree segments */
317 unsigned int rec_prefree_segments;
7fd9e544
JK		 318
319 /* for small discard management */
320 struct list_head discard_list; /* 4KB discard list */
321 int nr_discards; /* # of discards in the list */
322 int max_discards; /* max. discards to be issued */
39a53e0c
JK		 323};
324
39a53e0c
JK		 325/*
326 * For superblock
327 */
328/*
329 * COUNT_TYPE for monitoring
330 *
331 * f2fs monitors the number of several block types such as on-writeback,
332 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
333 */
334enum count_type {
335 F2FS_WRITEBACK,
336 F2FS_DIRTY_DENTS,
337 F2FS_DIRTY_NODES,
338 F2FS_DIRTY_META,
339 NR_COUNT_TYPE,
340};
341
39a53e0c
JK		 342/*
343 * The below are the page types of bios used in submti_bio().
344 * The available types are:
345 * DATA User data pages. It operates as async mode.
346 * NODE Node pages. It operates as async mode.
347 * META FS metadata pages such as SIT, NAT, CP.
348 * NR_PAGE_TYPE The number of page types.
349 * META_FLUSH Make sure the previous pages are written
350 * with waiting the bio's completion
351 * ... Only can be used with META.
352 */
7d5e5109 353#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
39a53e0c
JK		 354enum page_type {
355 DATA,
356 NODE,
357 META,
358 NR_PAGE_TYPE,
359 META_FLUSH,
360};
361
362struct f2fs_sb_info {
363 struct super_block *sb; /* pointer to VFS super block */
5e176d54 364 struct proc_dir_entry *s_proc; /* proc entry */
39a53e0c
JK		 365 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
366 struct f2fs_super_block *raw_super; /* raw super block pointer */
367 int s_dirty; /* dirty flag for checkpoint */
368
369 /* for node-related operations */
370 struct f2fs_nm_info *nm_info; /* node manager */
371 struct inode *node_inode; /* cache node blocks */
372
373 /* for segment-related operations */
374 struct f2fs_sm_info *sm_info; /* segment manager */
375 struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */
376 sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */
971767ca 377 struct mutex write_mutex[NR_PAGE_TYPE]; /* mutex for writing IOs */
39a53e0c
JK		 378
379 /* for checkpoint */
380 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
381 struct inode *meta_inode; /* cache meta blocks */
39936837 382 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 383 struct rw_semaphore cp_rwsem; /* blocking FS operations */
39936837 384 struct mutex node_write; /* locking node writes */
39a53e0c 385 struct mutex writepages; /* mutex for writepages() */
aabe5136
HL		 386 bool por_doing; /* recovery is doing or not */
387 bool on_build_free_nids; /* build_free_nids is doing */
fb51b5ef 388 wait_queue_head_t cp_wait;
39a53e0c
JK		 389
390 /* for orphan inode management */
391 struct list_head orphan_inode_list; /* orphan inode list */
392 struct mutex orphan_inode_mutex; /* for orphan inode list */
393 unsigned int n_orphans; /* # of orphan inodes */
394
395 /* for directory inode management */
396 struct list_head dir_inode_list; /* dir inode list */
397 spinlock_t dir_inode_lock; /* for dir inode list lock */
39a53e0c
JK		 398
399 /* basic file system units */
400 unsigned int log_sectors_per_block; /* log2 sectors per block */
401 unsigned int log_blocksize; /* log2 block size */
402 unsigned int blocksize; /* block size */
403 unsigned int root_ino_num; /* root inode number*/
404 unsigned int node_ino_num; /* node inode number*/
405 unsigned int meta_ino_num; /* meta inode number*/
406 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
407 unsigned int blocks_per_seg; /* blocks per segment */
408 unsigned int segs_per_sec; /* segments per section */
409 unsigned int secs_per_zone; /* sections per zone */
410 unsigned int total_sections; /* total section count */
411 unsigned int total_node_count; /* total node block count */
412 unsigned int total_valid_node_count; /* valid node block count */
413 unsigned int total_valid_inode_count; /* valid inode count */
414 int active_logs; /* # of active logs */
415
416 block_t user_block_count; /* # of user blocks */
417 block_t total_valid_block_count; /* # of valid blocks */
418 block_t alloc_valid_block_count; /* # of allocated blocks */
419 block_t last_valid_block_count; /* for recovery */
420 u32 s_next_generation; /* for NFS support */
421 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
422
423 struct f2fs_mount_info mount_opt; /* mount options */
424
425 /* for cleaning operations */
426 struct mutex gc_mutex; /* mutex for GC */
427 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 428 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c
JK		 429
430 /*
431 * for stat information.
432 * one is for the LFS mode, and the other is for the SSR mode.
433 */
35b09d82 434#ifdef CONFIG_F2FS_STAT_FS
39a53e0c
JK		 435 struct f2fs_stat_info *stat_info; /* FS status information */
436 unsigned int segment_count[2]; /* # of allocated segments */
437 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c
JK		 438 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
439 int bg_gc; /* background gc calls */
35b09d82
NJ		 440 unsigned int n_dirty_dirs; /* # of dir inodes */
441#endif
442 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 443 spinlock_t stat_lock; /* lock for stat operations */
b59d0bae
NJ		 444
445 /* For sysfs suppport */
446 struct kobject s_kobj;
447 struct completion s_kobj_unregister;
39a53e0c
JK		 448};
449
450/*
451 * Inline functions
452 */
453static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
454{
455 return container_of(inode, struct f2fs_inode_info, vfs_inode);
456}
457
458static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
459{
460 return sb->s_fs_info;
461}
462
463static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
464{
465 return (struct f2fs_super_block *)(sbi->raw_super);
466}
467
468static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
469{
470 return (struct f2fs_checkpoint *)(sbi->ckpt);
471}
472
45590710
GZ		 473static inline struct f2fs_node *F2FS_NODE(struct page *page)
474{
475 return (struct f2fs_node *)page_address(page);
476}
477
39a53e0c
JK		 478static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
479{
480 return (struct f2fs_nm_info *)(sbi->nm_info);
481}
482
483static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
484{
485 return (struct f2fs_sm_info *)(sbi->sm_info);
486}
487
488static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
489{
490 return (struct sit_info *)(SM_I(sbi)->sit_info);
491}
492
493static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
494{
495 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
496}
497
498static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
499{
500 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
501}
502
503static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
504{
505 sbi->s_dirty = 1;
506}
507
508static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
509{
510 sbi->s_dirty = 0;
511}
512
d71b5564
JK		 513static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
514{
515 return le64_to_cpu(cp->checkpoint_ver);
516}
517
25ca923b
JK		 518static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
519{
520 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
521 return ckpt_flags & f;
522}
523
524static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
525{
526 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
527 ckpt_flags |= f;
528 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
529}
530
531static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
532{
533 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
534 ckpt_flags &= (~f);
535 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
536}
537
e479556b 538static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 539{
e479556b 540 down_read(&sbi->cp_rwsem);
39936837
JK		 541}
542
e479556b 543static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 544{
e479556b 545 up_read(&sbi->cp_rwsem);
39a53e0c
JK		 546}
547
e479556b 548static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 549{
e479556b 550 down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK		 551}
552
e479556b 553static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 554{
e479556b 555 up_write(&sbi->cp_rwsem);
39a53e0c
JK		 556}
557
558/*
559 * Check whether the given nid is within node id range.
560 */
064e0823 561static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 562{
064e0823
NJ		 563 WARN_ON((nid >= NM_I(sbi)->max_nid));
564 if (nid >= NM_I(sbi)->max_nid)
565 return -EINVAL;
566 return 0;
39a53e0c
JK		 567}
568
569#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
570
571/*
572 * Check whether the inode has blocks or not
573 */
574static inline int F2FS_HAS_BLOCKS(struct inode *inode)
575{
576 if (F2FS_I(inode)->i_xattr_nid)
577 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1);
578 else
579 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS);
580}
581
582static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
583 struct inode *inode, blkcnt_t count)
584{
585 block_t valid_block_count;
586
587 spin_lock(&sbi->stat_lock);
588 valid_block_count =
589 sbi->total_valid_block_count + (block_t)count;
590 if (valid_block_count > sbi->user_block_count) {
591 spin_unlock(&sbi->stat_lock);
592 return false;
593 }
594 inode->i_blocks += count;
595 sbi->total_valid_block_count = valid_block_count;
596 sbi->alloc_valid_block_count += (block_t)count;
597 spin_unlock(&sbi->stat_lock);
598 return true;
599}
600
601static inline int dec_valid_block_count(struct f2fs_sb_info *sbi,
602 struct inode *inode,
603 blkcnt_t count)
604{
605 spin_lock(&sbi->stat_lock);
5d56b671
JK		 606 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count);
607 f2fs_bug_on(inode->i_blocks < count);
39a53e0c
JK		 608 inode->i_blocks -= count;
609 sbi->total_valid_block_count -= (block_t)count;
610 spin_unlock(&sbi->stat_lock);
611 return 0;
612}
613
614static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
615{
616 atomic_inc(&sbi->nr_pages[count_type]);
617 F2FS_SET_SB_DIRT(sbi);
618}
619
620static inline void inode_inc_dirty_dents(struct inode *inode)
621{
622 atomic_inc(&F2FS_I(inode)->dirty_dents);
623}
624
625static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
626{
627 atomic_dec(&sbi->nr_pages[count_type]);
628}
629
630static inline void inode_dec_dirty_dents(struct inode *inode)
631{
632 atomic_dec(&F2FS_I(inode)->dirty_dents);
633}
634
635static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
636{
637 return atomic_read(&sbi->nr_pages[count_type]);
638}
639
5ac206cf
NJ		 640static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
641{
642 unsigned int pages_per_sec = sbi->segs_per_sec *
643 (1 << sbi->log_blocks_per_seg);
644 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
645 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
646}
647
39a53e0c
JK		 648static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
649{
650 block_t ret;
651 spin_lock(&sbi->stat_lock);
652 ret = sbi->total_valid_block_count;
653 spin_unlock(&sbi->stat_lock);
654 return ret;
655}
656
657static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
658{
659 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
660
661 /* return NAT or SIT bitmap */
662 if (flag == NAT_BITMAP)
663 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
664 else if (flag == SIT_BITMAP)
665 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
666
667 return 0;
668}
669
670static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
671{
672 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
25ca923b
JK		 673 int offset = (flag == NAT_BITMAP) ?
674 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
39a53e0c
JK		 675 return &ckpt->sit_nat_version_bitmap + offset;
676}
677
678static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
679{
680 block_t start_addr;
681 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 682 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 683
25ca923b 684 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK		 685
686 /*
687 * odd numbered checkpoint should at cp segment 0
688 * and even segent must be at cp segment 1
689 */
690 if (!(ckpt_version & 1))
691 start_addr += sbi->blocks_per_seg;
692
693 return start_addr;
694}
695
696static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
697{
698 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
699}
700
701static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
702 struct inode *inode,
703 unsigned int count)
704{
705 block_t valid_block_count;
706 unsigned int valid_node_count;
707
708 spin_lock(&sbi->stat_lock);
709
710 valid_block_count = sbi->total_valid_block_count + (block_t)count;
711 sbi->alloc_valid_block_count += (block_t)count;
712 valid_node_count = sbi->total_valid_node_count + count;
713
714 if (valid_block_count > sbi->user_block_count) {
715 spin_unlock(&sbi->stat_lock);
716 return false;
717 }
718
719 if (valid_node_count > sbi->total_node_count) {
720 spin_unlock(&sbi->stat_lock);
721 return false;
722 }
723
724 if (inode)
725 inode->i_blocks += count;
726 sbi->total_valid_node_count = valid_node_count;
727 sbi->total_valid_block_count = valid_block_count;
728 spin_unlock(&sbi->stat_lock);
729
730 return true;
731}
732
733static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
734 struct inode *inode,
735 unsigned int count)
736{
737 spin_lock(&sbi->stat_lock);
738
5d56b671
JK		 739 f2fs_bug_on(sbi->total_valid_block_count < count);
740 f2fs_bug_on(sbi->total_valid_node_count < count);
741 f2fs_bug_on(inode->i_blocks < count);
39a53e0c
JK		 742
743 inode->i_blocks -= count;
744 sbi->total_valid_node_count -= count;
745 sbi->total_valid_block_count -= (block_t)count;
746
747 spin_unlock(&sbi->stat_lock);
748}
749
750static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
751{
752 unsigned int ret;
753 spin_lock(&sbi->stat_lock);
754 ret = sbi->total_valid_node_count;
755 spin_unlock(&sbi->stat_lock);
756 return ret;
757}
758
759static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
760{
761 spin_lock(&sbi->stat_lock);
5d56b671 762 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK		 763 sbi->total_valid_inode_count++;
764 spin_unlock(&sbi->stat_lock);
765}
766
767static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi)
768{
769 spin_lock(&sbi->stat_lock);
5d56b671 770 f2fs_bug_on(!sbi->total_valid_inode_count);
39a53e0c
JK		 771 sbi->total_valid_inode_count--;
772 spin_unlock(&sbi->stat_lock);
773 return 0;
774}
775
776static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
777{
778 unsigned int ret;
779 spin_lock(&sbi->stat_lock);
780 ret = sbi->total_valid_inode_count;
781 spin_unlock(&sbi->stat_lock);
782 return ret;
783}
784
785static inline void f2fs_put_page(struct page *page, int unlock)
786{
787 if (!page || IS_ERR(page))
788 return;
789
790 if (unlock) {
5d56b671 791 f2fs_bug_on(!PageLocked(page));
39a53e0c
JK		 792 unlock_page(page);
793 }
794 page_cache_release(page);
795}
796
797static inline void f2fs_put_dnode(struct dnode_of_data *dn)
798{
799 if (dn->node_page)
800 f2fs_put_page(dn->node_page, 1);
801 if (dn->inode_page && dn->node_page != dn->inode_page)
802 f2fs_put_page(dn->inode_page, 0);
803 dn->node_page = NULL;
804 dn->inode_page = NULL;
805}
806
807static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
808 size_t size, void (*ctor)(void *))
809{
810 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor);
811}
812
7bd59381
GZ		 813static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
814 gfp_t flags)
815{
816 void *entry;
817retry:
818 entry = kmem_cache_alloc(cachep, flags);
819 if (!entry) {
820 cond_resched();
821 goto retry;
822 }
823
824 return entry;
825}
826
39a53e0c
JK		 827#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
828
829static inline bool IS_INODE(struct page *page)
830{
45590710 831 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK		 832 return RAW_IS_INODE(p);
833}
834
835static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
836{
837 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
838}
839
840static inline block_t datablock_addr(struct page *node_page,
841 unsigned int offset)
842{
843 struct f2fs_node *raw_node;
844 __le32 *addr_array;
45590710 845 raw_node = F2FS_NODE(node_page);
39a53e0c
JK		 846 addr_array = blkaddr_in_node(raw_node);
847 return le32_to_cpu(addr_array[offset]);
848}
849
850static inline int f2fs_test_bit(unsigned int nr, char *addr)
851{
852 int mask;
853
854 addr += (nr >> 3);
855 mask = 1 << (7 - (nr & 0x07));
856 return mask & *addr;
857}
858
859static inline int f2fs_set_bit(unsigned int nr, char *addr)
860{
861 int mask;
862 int ret;
863
864 addr += (nr >> 3);
865 mask = 1 << (7 - (nr & 0x07));
866 ret = mask & *addr;
867 *addr |= mask;
868 return ret;
869}
870
871static inline int f2fs_clear_bit(unsigned int nr, char *addr)
872{
873 int mask;
874 int ret;
875
876 addr += (nr >> 3);
877 mask = 1 << (7 - (nr & 0x07));
878 ret = mask & *addr;
879 *addr &= ~mask;
880 return ret;
881}
882
883/* used for f2fs_inode_info->flags */
884enum {
885 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 886 FI_DIRTY_INODE, /* indicate inode is dirty or not */
39a53e0c
JK		 887 FI_INC_LINK, /* need to increment i_nlink */
888 FI_ACL_MODE, /* indicate acl mode */
889 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 890 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 891 FI_DELAY_IPUT, /* used for the recovery */
444c580f 892 FI_INLINE_XATTR, /* used for inline xattr */
39a53e0c
JK		 893};
894
895static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
896{
897 set_bit(flag, &fi->flags);
898}
899
900static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
901{
902 return test_bit(flag, &fi->flags);
903}
904
905static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
906{
907 clear_bit(flag, &fi->flags);
908}
909
910static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
911{
912 fi->i_acl_mode = mode;
913 set_inode_flag(fi, FI_ACL_MODE);
914}
915
916static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
917{
918 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
919 clear_inode_flag(fi, FI_ACL_MODE);
920 return 1;
921 }
922 return 0;
923}
924
444c580f
JK		 925static inline void get_inline_info(struct f2fs_inode_info *fi,
926 struct f2fs_inode *ri)
927{
928 if (ri->i_inline & F2FS_INLINE_XATTR)
929 set_inode_flag(fi, FI_INLINE_XATTR);
930}
931
932static inline void set_raw_inline(struct f2fs_inode_info *fi,
933 struct f2fs_inode *ri)
934{
935 ri->i_inline = 0;
936
937 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
938 ri->i_inline |= F2FS_INLINE_XATTR;
939}
940
de93653f
JK		 941static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
942{
943 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
944 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
945 return DEF_ADDRS_PER_INODE;
946}
947
65985d93
JK		 948static inline void *inline_xattr_addr(struct page *page)
949{
950 struct f2fs_inode *ri;
951 ri = (struct f2fs_inode *)page_address(page);
952 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
953 F2FS_INLINE_XATTR_ADDRS]);
954}
955
956static inline int inline_xattr_size(struct inode *inode)
957{
958 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
959 return F2FS_INLINE_XATTR_ADDRS << 2;
960 else
961 return 0;
962}
963
77888c1e
JK		 964static inline int f2fs_readonly(struct super_block *sb)
965{
966 return sb->s_flags & MS_RDONLY;
967}
968
39a53e0c
JK		 969/*
970 * file.c
971 */
972int f2fs_sync_file(struct file *, loff_t, loff_t, int);
973void truncate_data_blocks(struct dnode_of_data *);
974void f2fs_truncate(struct inode *);
2d4d9fb5 975int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK		 976int f2fs_setattr(struct dentry *, struct iattr *);
977int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 978int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 979long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 980long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK		 981
982/*
983 * inode.c
984 */
985void f2fs_set_inode_flags(struct inode *);
39a53e0c 986struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 987int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 988void update_inode(struct inode *, struct page *);
39936837 989int update_inode_page(struct inode *);
39a53e0c
JK		 990int f2fs_write_inode(struct inode *, struct writeback_control *);
991void f2fs_evict_inode(struct inode *);
992
993/*
994 * namei.c
995 */
996struct dentry *f2fs_get_parent(struct dentry *child);
997
998/*
999 * dir.c
1000 */
1001struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1002 struct page **);
1003struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1004ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1005void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1006 struct page *, struct inode *);
1cd14caf 1007int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 1008int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c
JK		 1009void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
1010int f2fs_make_empty(struct inode *, struct inode *);
1011bool f2fs_empty_dir(struct inode *);
1012
b7f7a5e0
AV		 1013static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1014{
1015 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1016 inode);
1017}
1018
39a53e0c
JK		 1019/*
1020 * super.c
1021 */
1022int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ		 1023extern __printf(3, 4)
1024void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK		 1025
1026/*
1027 * hash.c
1028 */
9836b8b9 1029f2fs_hash_t f2fs_dentry_hash(const char *, size_t);
39a53e0c
JK		 1030
1031/*
1032 * node.c
1033 */
1034struct dnode_of_data;
1035struct node_info;
1036
1037int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1038void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1039int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1040int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1041int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1042int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
39a53e0c 1043int remove_inode_page(struct inode *);
44a83ff6 1044struct page *new_inode_page(struct inode *, const struct qstr *);
8ae8f162 1045struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK		 1046void ra_node_page(struct f2fs_sb_info *, nid_t);
1047struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1048struct page *get_node_page_ra(struct page *, int);
1049void sync_inode_page(struct dnode_of_data *);
1050int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1051bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1052void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1053void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1054void recover_node_page(struct f2fs_sb_info *, struct page *,
1055 struct f2fs_summary *, struct node_info *, block_t);
1056int recover_inode_page(struct f2fs_sb_info *, struct page *);
1057int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1058 struct f2fs_summary_block *);
1059void flush_nat_entries(struct f2fs_sb_info *);
1060int build_node_manager(struct f2fs_sb_info *);
1061void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1062int __init create_node_manager_caches(void);
39a53e0c
JK		 1063void destroy_node_manager_caches(void);
1064
1065/*
1066 * segment.c
1067 */
1068void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1069void f2fs_balance_fs_bg(struct f2fs_sb_info *);
39a53e0c 1070void invalidate_blocks(struct f2fs_sb_info *, block_t);
39a53e0c
JK		 1071void clear_prefree_segments(struct f2fs_sb_info *);
1072int npages_for_summary_flush(struct f2fs_sb_info *);
1073void allocate_new_segments(struct f2fs_sb_info *);
1074struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
3cd8a239 1075struct bio *f2fs_bio_alloc(struct block_device *, int);
a569469e
JX		 1076void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool);
1077void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
577e3495 1078void write_meta_page(struct f2fs_sb_info *, struct page *);
39a53e0c
JK		 1079void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int,
1080 block_t, block_t *);
1081void write_data_page(struct inode *, struct page *, struct dnode_of_data*,
1082 block_t, block_t *);
1083void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t);
1084void recover_data_page(struct f2fs_sb_info *, struct page *,
1085 struct f2fs_summary *, block_t, block_t);
1086void rewrite_node_page(struct f2fs_sb_info *, struct page *,
1087 struct f2fs_summary *, block_t, block_t);
1088void write_data_summaries(struct f2fs_sb_info *, block_t);
1089void write_node_summaries(struct f2fs_sb_info *, block_t);
1090int lookup_journal_in_cursum(struct f2fs_summary_block *,
1091 int, unsigned int, int);
1092void flush_sit_entries(struct f2fs_sb_info *);
1093int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1094void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK		 1095int __init create_segment_manager_caches(void);
1096void destroy_segment_manager_caches(void);
39a53e0c
JK		 1097
1098/*
1099 * checkpoint.c
1100 */
1101struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1102struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1103long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
cbd56e7d
JK		 1104int acquire_orphan_inode(struct f2fs_sb_info *);
1105void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK		 1106void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1107void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1108int recover_orphan_inodes(struct f2fs_sb_info *);
1109int get_valid_checkpoint(struct f2fs_sb_info *);
1110void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1111void add_dirty_dir_inode(struct inode *);
39a53e0c 1112void remove_dirty_dir_inode(struct inode *);
74d0b917 1113struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t);
39a53e0c 1114void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1115void write_checkpoint(struct f2fs_sb_info *, bool);
39a53e0c 1116void init_orphan_info(struct f2fs_sb_info *);
6e6093a8 1117int __init create_checkpoint_caches(void);
39a53e0c
JK		 1118void destroy_checkpoint_caches(void);
1119
1120/*
1121 * data.c
1122 */
1123int reserve_new_block(struct dnode_of_data *);
1124void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1125struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1126struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1127struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
39a53e0c
JK		 1128int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int);
1129int do_write_data_page(struct page *);
1130
1131/*
1132 * gc.c
1133 */
1134int start_gc_thread(struct f2fs_sb_info *);
1135void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1136block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1137int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1138void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1139int __init create_gc_caches(void);
39a53e0c
JK		 1140void destroy_gc_caches(void);
1141
1142/*
1143 * recovery.c
1144 */
6ead1142 1145int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK		 1146bool space_for_roll_forward(struct f2fs_sb_info *);
1147
1148/*
1149 * debug.c
1150 */
1151#ifdef CONFIG_F2FS_STAT_FS
1152struct f2fs_stat_info {
1153 struct list_head stat_list;
1154 struct f2fs_sb_info *sbi;
1155 struct mutex stat_lock;
1156 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1157 int main_area_segs, main_area_sections, main_area_zones;
1158 int hit_ext, total_ext;
1159 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1160 int nats, sits, fnids;
1161 int total_count, utilization;
1162 int bg_gc;
1163 unsigned int valid_count, valid_node_count, valid_inode_count;
1164 unsigned int bimodal, avg_vblocks;
1165 int util_free, util_valid, util_invalid;
1166 int rsvd_segs, overp_segs;
1167 int dirty_count, node_pages, meta_pages;
1168 int prefree_count, call_count;
1169 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1170 int tot_blks, data_blks, node_blks;
1171 int curseg[NR_CURSEG_TYPE];
1172 int cursec[NR_CURSEG_TYPE];
1173 int curzone[NR_CURSEG_TYPE];
1174
1175 unsigned int segment_count[2];
1176 unsigned int block_count[2];
1177 unsigned base_mem, cache_mem;
1178};
1179
963d4f7d
GZ		 1180static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1181{
1182 return (struct f2fs_stat_info*)sbi->stat_info;
1183}
1184
dcdfff65
JK		 1185#define stat_inc_call_count(si) ((si)->call_count++)
1186#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1187#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1188#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1189#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1190#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1191#define stat_inc_seg_type(sbi, curseg) \
1192 ((sbi)->segment_count[(curseg)->alloc_type]++)
1193#define stat_inc_block_count(sbi, curseg) \
1194 ((sbi)->block_count[(curseg)->alloc_type]++)
39a53e0c
JK		 1195
1196#define stat_inc_seg_count(sbi, type) \
1197 do { \
963d4f7d 1198 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1199 (si)->tot_segs++; \
1200 if (type == SUM_TYPE_DATA) \
1201 si->data_segs++; \
1202 else \
1203 si->node_segs++; \
1204 } while (0)
1205
1206#define stat_inc_tot_blk_count(si, blks) \
1207 (si->tot_blks += (blks))
1208
1209#define stat_inc_data_blk_count(sbi, blks) \
1210 do { \
963d4f7d 1211 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1212 stat_inc_tot_blk_count(si, blks); \
1213 si->data_blks += (blks); \
1214 } while (0)
1215
1216#define stat_inc_node_blk_count(sbi, blks) \
1217 do { \
963d4f7d 1218 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1219 stat_inc_tot_blk_count(si, blks); \
1220 si->node_blks += (blks); \
1221 } while (0)
1222
1223int f2fs_build_stats(struct f2fs_sb_info *);
1224void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1225void __init f2fs_create_root_stats(void);
4589d25d 1226void f2fs_destroy_root_stats(void);
39a53e0c
JK		 1227#else
1228#define stat_inc_call_count(si)
dcdfff65
JK		 1229#define stat_inc_bggc_count(si)
1230#define stat_inc_dirty_dir(sbi)
1231#define stat_dec_dirty_dir(sbi)
1232#define stat_inc_total_hit(sb)
1233#define stat_inc_read_hit(sb)
1234#define stat_inc_seg_type(sbi, curseg)
1235#define stat_inc_block_count(sbi, curseg)
39a53e0c
JK		 1236#define stat_inc_seg_count(si, type)
1237#define stat_inc_tot_blk_count(si, blks)
1238#define stat_inc_data_blk_count(si, blks)
1239#define stat_inc_node_blk_count(sbi, blks)
1240
1241static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1242static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1243static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1244static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK		 1245#endif
1246
1247extern const struct file_operations f2fs_dir_operations;
1248extern const struct file_operations f2fs_file_operations;
1249extern const struct inode_operations f2fs_file_inode_operations;
1250extern const struct address_space_operations f2fs_dblock_aops;
1251extern const struct address_space_operations f2fs_node_aops;
1252extern const struct address_space_operations f2fs_meta_aops;
1253extern const struct inode_operations f2fs_dir_inode_operations;
1254extern const struct inode_operations f2fs_symlink_inode_operations;
1255extern const struct inode_operations f2fs_special_inode_operations;
1256#endif