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f2fs: introduce f2fs_balance_fs_bg for some background jobs
[linux-2.6-block.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
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 */
81eb8d6e
JK		 302
303 /* a threshold to reclaim prefree segments */
304 unsigned int rec_prefree_segments;
39a53e0c
JK		 305};
306
39a53e0c
JK		 307/*
308 * For superblock
309 */
310/*
311 * COUNT_TYPE for monitoring
312 *
313 * f2fs monitors the number of several block types such as on-writeback,
314 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
315 */
316enum count_type {
317 F2FS_WRITEBACK,
318 F2FS_DIRTY_DENTS,
319 F2FS_DIRTY_NODES,
320 F2FS_DIRTY_META,
321 NR_COUNT_TYPE,
322};
323
39a53e0c
JK		 324/*
325 * The below are the page types of bios used in submti_bio().
326 * The available types are:
327 * DATA User data pages. It operates as async mode.
328 * NODE Node pages. It operates as async mode.
329 * META FS metadata pages such as SIT, NAT, CP.
330 * NR_PAGE_TYPE The number of page types.
331 * META_FLUSH Make sure the previous pages are written
332 * with waiting the bio's completion
333 * ... Only can be used with META.
334 */
335enum page_type {
336 DATA,
337 NODE,
338 META,
339 NR_PAGE_TYPE,
340 META_FLUSH,
341};
342
343struct f2fs_sb_info {
344 struct super_block *sb; /* pointer to VFS super block */
5e176d54 345 struct proc_dir_entry *s_proc; /* proc entry */
39a53e0c
JK		 346 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
347 struct f2fs_super_block *raw_super; /* raw super block pointer */
348 int s_dirty; /* dirty flag for checkpoint */
349
350 /* for node-related operations */
351 struct f2fs_nm_info *nm_info; /* node manager */
352 struct inode *node_inode; /* cache node blocks */
353
354 /* for segment-related operations */
355 struct f2fs_sm_info *sm_info; /* segment manager */
356 struct bio *bio[NR_PAGE_TYPE]; /* bios to merge */
357 sector_t last_block_in_bio[NR_PAGE_TYPE]; /* last block number */
358 struct rw_semaphore bio_sem; /* IO semaphore */
359
360 /* for checkpoint */
361 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
362 struct inode *meta_inode; /* cache meta blocks */
39936837 363 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 364 struct rw_semaphore cp_rwsem; /* blocking FS operations */
39936837 365 struct mutex node_write; /* locking node writes */
39a53e0c 366 struct mutex writepages; /* mutex for writepages() */
aabe5136
HL		 367 bool por_doing; /* recovery is doing or not */
368 bool on_build_free_nids; /* build_free_nids is doing */
e2340887 369 struct task_struct *cp_task; /* checkpoint task */
39a53e0c
JK		 370
371 /* for orphan inode management */
372 struct list_head orphan_inode_list; /* orphan inode list */
373 struct mutex orphan_inode_mutex; /* for orphan inode list */
374 unsigned int n_orphans; /* # of orphan inodes */
375
376 /* for directory inode management */
377 struct list_head dir_inode_list; /* dir inode list */
378 spinlock_t dir_inode_lock; /* for dir inode list lock */
39a53e0c
JK		 379
380 /* basic file system units */
381 unsigned int log_sectors_per_block; /* log2 sectors per block */
382 unsigned int log_blocksize; /* log2 block size */
383 unsigned int blocksize; /* block size */
384 unsigned int root_ino_num; /* root inode number*/
385 unsigned int node_ino_num; /* node inode number*/
386 unsigned int meta_ino_num; /* meta inode number*/
387 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
388 unsigned int blocks_per_seg; /* blocks per segment */
389 unsigned int segs_per_sec; /* segments per section */
390 unsigned int secs_per_zone; /* sections per zone */
391 unsigned int total_sections; /* total section count */
392 unsigned int total_node_count; /* total node block count */
393 unsigned int total_valid_node_count; /* valid node block count */
394 unsigned int total_valid_inode_count; /* valid inode count */
395 int active_logs; /* # of active logs */
396
397 block_t user_block_count; /* # of user blocks */
398 block_t total_valid_block_count; /* # of valid blocks */
399 block_t alloc_valid_block_count; /* # of allocated blocks */
400 block_t last_valid_block_count; /* for recovery */
401 u32 s_next_generation; /* for NFS support */
402 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
403
404 struct f2fs_mount_info mount_opt; /* mount options */
405
406 /* for cleaning operations */
407 struct mutex gc_mutex; /* mutex for GC */
408 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 409 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c
JK		 410
411 /*
412 * for stat information.
413 * one is for the LFS mode, and the other is for the SSR mode.
414 */
35b09d82 415#ifdef CONFIG_F2FS_STAT_FS
39a53e0c
JK		 416 struct f2fs_stat_info *stat_info; /* FS status information */
417 unsigned int segment_count[2]; /* # of allocated segments */
418 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c
JK		 419 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
420 int bg_gc; /* background gc calls */
35b09d82
NJ		 421 unsigned int n_dirty_dirs; /* # of dir inodes */
422#endif
423 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 424 spinlock_t stat_lock; /* lock for stat operations */
b59d0bae
NJ		 425
426 /* For sysfs suppport */
427 struct kobject s_kobj;
428 struct completion s_kobj_unregister;
39a53e0c
JK		 429};
430
431/*
432 * Inline functions
433 */
434static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
435{
436 return container_of(inode, struct f2fs_inode_info, vfs_inode);
437}
438
439static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
440{
441 return sb->s_fs_info;
442}
443
444static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
445{
446 return (struct f2fs_super_block *)(sbi->raw_super);
447}
448
449static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
450{
451 return (struct f2fs_checkpoint *)(sbi->ckpt);
452}
453
45590710
GZ		 454static inline struct f2fs_node *F2FS_NODE(struct page *page)
455{
456 return (struct f2fs_node *)page_address(page);
457}
458
39a53e0c
JK		 459static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
460{
461 return (struct f2fs_nm_info *)(sbi->nm_info);
462}
463
464static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
465{
466 return (struct f2fs_sm_info *)(sbi->sm_info);
467}
468
469static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
470{
471 return (struct sit_info *)(SM_I(sbi)->sit_info);
472}
473
474static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
475{
476 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
477}
478
479static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
480{
481 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
482}
483
484static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
485{
486 sbi->s_dirty = 1;
487}
488
489static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
490{
491 sbi->s_dirty = 0;
492}
493
d71b5564
JK		 494static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
495{
496 return le64_to_cpu(cp->checkpoint_ver);
497}
498
25ca923b
JK		 499static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
500{
501 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
502 return ckpt_flags & f;
503}
504
505static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
506{
507 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
508 ckpt_flags |= f;
509 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
510}
511
512static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
513{
514 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
515 ckpt_flags &= (~f);
516 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
517}
518
e479556b 519static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 520{
e479556b 521 down_read(&sbi->cp_rwsem);
39936837
JK		 522}
523
e479556b 524static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 525{
e479556b 526 up_read(&sbi->cp_rwsem);
39a53e0c
JK		 527}
528
e479556b 529static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 530{
e479556b 531 down_write_nest_lock(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK		 532}
533
e479556b 534static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 535{
e479556b 536 up_write(&sbi->cp_rwsem);
39a53e0c
JK		 537}
538
539/*
540 * Check whether the given nid is within node id range.
541 */
064e0823 542static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 543{
064e0823
NJ		 544 WARN_ON((nid >= NM_I(sbi)->max_nid));
545 if (nid >= NM_I(sbi)->max_nid)
546 return -EINVAL;
547 return 0;
39a53e0c
JK		 548}
549
550#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
551
552/*
553 * Check whether the inode has blocks or not
554 */
555static inline int F2FS_HAS_BLOCKS(struct inode *inode)
556{
557 if (F2FS_I(inode)->i_xattr_nid)
558 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1);
559 else
560 return (inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS);
561}
562
563static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
564 struct inode *inode, blkcnt_t count)
565{
566 block_t valid_block_count;
567
568 spin_lock(&sbi->stat_lock);
569 valid_block_count =
570 sbi->total_valid_block_count + (block_t)count;
571 if (valid_block_count > sbi->user_block_count) {
572 spin_unlock(&sbi->stat_lock);
573 return false;
574 }
575 inode->i_blocks += count;
576 sbi->total_valid_block_count = valid_block_count;
577 sbi->alloc_valid_block_count += (block_t)count;
578 spin_unlock(&sbi->stat_lock);
579 return true;
580}
581
582static inline int dec_valid_block_count(struct f2fs_sb_info *sbi,
583 struct inode *inode,
584 blkcnt_t count)
585{
586 spin_lock(&sbi->stat_lock);
587 BUG_ON(sbi->total_valid_block_count < (block_t) count);
588 BUG_ON(inode->i_blocks < count);
589 inode->i_blocks -= count;
590 sbi->total_valid_block_count -= (block_t)count;
591 spin_unlock(&sbi->stat_lock);
592 return 0;
593}
594
595static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
596{
597 atomic_inc(&sbi->nr_pages[count_type]);
598 F2FS_SET_SB_DIRT(sbi);
599}
600
601static inline void inode_inc_dirty_dents(struct inode *inode)
602{
603 atomic_inc(&F2FS_I(inode)->dirty_dents);
604}
605
606static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
607{
608 atomic_dec(&sbi->nr_pages[count_type]);
609}
610
611static inline void inode_dec_dirty_dents(struct inode *inode)
612{
613 atomic_dec(&F2FS_I(inode)->dirty_dents);
614}
615
616static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
617{
618 return atomic_read(&sbi->nr_pages[count_type]);
619}
620
5ac206cf
NJ		 621static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
622{
623 unsigned int pages_per_sec = sbi->segs_per_sec *
624 (1 << sbi->log_blocks_per_seg);
625 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
626 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
627}
628
39a53e0c
JK		 629static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
630{
631 block_t ret;
632 spin_lock(&sbi->stat_lock);
633 ret = sbi->total_valid_block_count;
634 spin_unlock(&sbi->stat_lock);
635 return ret;
636}
637
638static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
639{
640 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
641
642 /* return NAT or SIT bitmap */
643 if (flag == NAT_BITMAP)
644 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
645 else if (flag == SIT_BITMAP)
646 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
647
648 return 0;
649}
650
651static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
652{
653 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
25ca923b
JK		 654 int offset = (flag == NAT_BITMAP) ?
655 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
39a53e0c
JK		 656 return &ckpt->sit_nat_version_bitmap + offset;
657}
658
659static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
660{
661 block_t start_addr;
662 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 663 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 664
25ca923b 665 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK		 666
667 /*
668 * odd numbered checkpoint should at cp segment 0
669 * and even segent must be at cp segment 1
670 */
671 if (!(ckpt_version & 1))
672 start_addr += sbi->blocks_per_seg;
673
674 return start_addr;
675}
676
677static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
678{
679 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
680}
681
682static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
683 struct inode *inode,
684 unsigned int count)
685{
686 block_t valid_block_count;
687 unsigned int valid_node_count;
688
689 spin_lock(&sbi->stat_lock);
690
691 valid_block_count = sbi->total_valid_block_count + (block_t)count;
692 sbi->alloc_valid_block_count += (block_t)count;
693 valid_node_count = sbi->total_valid_node_count + count;
694
695 if (valid_block_count > sbi->user_block_count) {
696 spin_unlock(&sbi->stat_lock);
697 return false;
698 }
699
700 if (valid_node_count > sbi->total_node_count) {
701 spin_unlock(&sbi->stat_lock);
702 return false;
703 }
704
705 if (inode)
706 inode->i_blocks += count;
707 sbi->total_valid_node_count = valid_node_count;
708 sbi->total_valid_block_count = valid_block_count;
709 spin_unlock(&sbi->stat_lock);
710
711 return true;
712}
713
714static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
715 struct inode *inode,
716 unsigned int count)
717{
718 spin_lock(&sbi->stat_lock);
719
720 BUG_ON(sbi->total_valid_block_count < count);
721 BUG_ON(sbi->total_valid_node_count < count);
722 BUG_ON(inode->i_blocks < count);
723
724 inode->i_blocks -= count;
725 sbi->total_valid_node_count -= count;
726 sbi->total_valid_block_count -= (block_t)count;
727
728 spin_unlock(&sbi->stat_lock);
729}
730
731static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
732{
733 unsigned int ret;
734 spin_lock(&sbi->stat_lock);
735 ret = sbi->total_valid_node_count;
736 spin_unlock(&sbi->stat_lock);
737 return ret;
738}
739
740static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
741{
742 spin_lock(&sbi->stat_lock);
743 BUG_ON(sbi->total_valid_inode_count == sbi->total_node_count);
744 sbi->total_valid_inode_count++;
745 spin_unlock(&sbi->stat_lock);
746}
747
748static inline int dec_valid_inode_count(struct f2fs_sb_info *sbi)
749{
750 spin_lock(&sbi->stat_lock);
751 BUG_ON(!sbi->total_valid_inode_count);
752 sbi->total_valid_inode_count--;
753 spin_unlock(&sbi->stat_lock);
754 return 0;
755}
756
757static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
758{
759 unsigned int ret;
760 spin_lock(&sbi->stat_lock);
761 ret = sbi->total_valid_inode_count;
762 spin_unlock(&sbi->stat_lock);
763 return ret;
764}
765
766static inline void f2fs_put_page(struct page *page, int unlock)
767{
768 if (!page || IS_ERR(page))
769 return;
770
771 if (unlock) {
772 BUG_ON(!PageLocked(page));
773 unlock_page(page);
774 }
775 page_cache_release(page);
776}
777
778static inline void f2fs_put_dnode(struct dnode_of_data *dn)
779{
780 if (dn->node_page)
781 f2fs_put_page(dn->node_page, 1);
782 if (dn->inode_page && dn->node_page != dn->inode_page)
783 f2fs_put_page(dn->inode_page, 0);
784 dn->node_page = NULL;
785 dn->inode_page = NULL;
786}
787
788static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
789 size_t size, void (*ctor)(void *))
790{
791 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, ctor);
792}
793
7bd59381
GZ		 794static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
795 gfp_t flags)
796{
797 void *entry;
798retry:
799 entry = kmem_cache_alloc(cachep, flags);
800 if (!entry) {
801 cond_resched();
802 goto retry;
803 }
804
805 return entry;
806}
807
39a53e0c
JK		 808#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
809
810static inline bool IS_INODE(struct page *page)
811{
45590710 812 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK		 813 return RAW_IS_INODE(p);
814}
815
816static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
817{
818 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
819}
820
821static inline block_t datablock_addr(struct page *node_page,
822 unsigned int offset)
823{
824 struct f2fs_node *raw_node;
825 __le32 *addr_array;
45590710 826 raw_node = F2FS_NODE(node_page);
39a53e0c
JK		 827 addr_array = blkaddr_in_node(raw_node);
828 return le32_to_cpu(addr_array[offset]);
829}
830
831static inline int f2fs_test_bit(unsigned int nr, char *addr)
832{
833 int mask;
834
835 addr += (nr >> 3);
836 mask = 1 << (7 - (nr & 0x07));
837 return mask & *addr;
838}
839
840static inline int f2fs_set_bit(unsigned int nr, char *addr)
841{
842 int mask;
843 int ret;
844
845 addr += (nr >> 3);
846 mask = 1 << (7 - (nr & 0x07));
847 ret = mask & *addr;
848 *addr |= mask;
849 return ret;
850}
851
852static inline int f2fs_clear_bit(unsigned int nr, char *addr)
853{
854 int mask;
855 int ret;
856
857 addr += (nr >> 3);
858 mask = 1 << (7 - (nr & 0x07));
859 ret = mask & *addr;
860 *addr &= ~mask;
861 return ret;
862}
863
864/* used for f2fs_inode_info->flags */
865enum {
866 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 867 FI_DIRTY_INODE, /* indicate inode is dirty or not */
39a53e0c
JK		 868 FI_INC_LINK, /* need to increment i_nlink */
869 FI_ACL_MODE, /* indicate acl mode */
870 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 871 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 872 FI_DELAY_IPUT, /* used for the recovery */
444c580f 873 FI_INLINE_XATTR, /* used for inline xattr */
39a53e0c
JK		 874};
875
876static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
877{
878 set_bit(flag, &fi->flags);
879}
880
881static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
882{
883 return test_bit(flag, &fi->flags);
884}
885
886static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
887{
888 clear_bit(flag, &fi->flags);
889}
890
891static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
892{
893 fi->i_acl_mode = mode;
894 set_inode_flag(fi, FI_ACL_MODE);
895}
896
897static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
898{
899 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
900 clear_inode_flag(fi, FI_ACL_MODE);
901 return 1;
902 }
903 return 0;
904}
905
444c580f
JK		 906static inline void get_inline_info(struct f2fs_inode_info *fi,
907 struct f2fs_inode *ri)
908{
909 if (ri->i_inline & F2FS_INLINE_XATTR)
910 set_inode_flag(fi, FI_INLINE_XATTR);
911}
912
913static inline void set_raw_inline(struct f2fs_inode_info *fi,
914 struct f2fs_inode *ri)
915{
916 ri->i_inline = 0;
917
918 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
919 ri->i_inline |= F2FS_INLINE_XATTR;
920}
921
de93653f
JK		 922static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
923{
924 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
925 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
926 return DEF_ADDRS_PER_INODE;
927}
928
65985d93
JK		 929static inline void *inline_xattr_addr(struct page *page)
930{
931 struct f2fs_inode *ri;
932 ri = (struct f2fs_inode *)page_address(page);
933 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
934 F2FS_INLINE_XATTR_ADDRS]);
935}
936
937static inline int inline_xattr_size(struct inode *inode)
938{
939 if (is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR))
940 return F2FS_INLINE_XATTR_ADDRS << 2;
941 else
942 return 0;
943}
944
77888c1e
JK		 945static inline int f2fs_readonly(struct super_block *sb)
946{
947 return sb->s_flags & MS_RDONLY;
948}
949
39a53e0c
JK		 950/*
951 * file.c
952 */
953int f2fs_sync_file(struct file *, loff_t, loff_t, int);
954void truncate_data_blocks(struct dnode_of_data *);
955void f2fs_truncate(struct inode *);
2d4d9fb5 956int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK		 957int f2fs_setattr(struct dentry *, struct iattr *);
958int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 959int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 960long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 961long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK		 962
963/*
964 * inode.c
965 */
966void f2fs_set_inode_flags(struct inode *);
39a53e0c 967struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 968int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 969void update_inode(struct inode *, struct page *);
39936837 970int update_inode_page(struct inode *);
39a53e0c
JK		 971int f2fs_write_inode(struct inode *, struct writeback_control *);
972void f2fs_evict_inode(struct inode *);
973
974/*
975 * namei.c
976 */
977struct dentry *f2fs_get_parent(struct dentry *child);
978
979/*
980 * dir.c
981 */
982struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
983 struct page **);
984struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
985ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
986void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
987 struct page *, struct inode *);
1cd14caf 988int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 989int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c
JK		 990void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
991int f2fs_make_empty(struct inode *, struct inode *);
992bool f2fs_empty_dir(struct inode *);
993
b7f7a5e0
AV		 994static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
995{
996 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
997 inode);
998}
999
39a53e0c
JK		 1000/*
1001 * super.c
1002 */
1003int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ		 1004extern __printf(3, 4)
1005void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK		 1006
1007/*
1008 * hash.c
1009 */
9836b8b9 1010f2fs_hash_t f2fs_dentry_hash(const char *, size_t);
39a53e0c
JK		 1011
1012/*
1013 * node.c
1014 */
1015struct dnode_of_data;
1016struct node_info;
1017
1018int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1019void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1020int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1021int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1022int truncate_xattr_node(struct inode *, struct page *);
39a53e0c 1023int remove_inode_page(struct inode *);
44a83ff6 1024struct page *new_inode_page(struct inode *, const struct qstr *);
8ae8f162 1025struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK		 1026void ra_node_page(struct f2fs_sb_info *, nid_t);
1027struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1028struct page *get_node_page_ra(struct page *, int);
1029void sync_inode_page(struct dnode_of_data *);
1030int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1031bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1032void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1033void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1034void recover_node_page(struct f2fs_sb_info *, struct page *,
1035 struct f2fs_summary *, struct node_info *, block_t);
1036int recover_inode_page(struct f2fs_sb_info *, struct page *);
1037int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1038 struct f2fs_summary_block *);
1039void flush_nat_entries(struct f2fs_sb_info *);
1040int build_node_manager(struct f2fs_sb_info *);
1041void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1042int __init create_node_manager_caches(void);
39a53e0c
JK		 1043void destroy_node_manager_caches(void);
1044
1045/*
1046 * segment.c
1047 */
1048void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1049void f2fs_balance_fs_bg(struct f2fs_sb_info *);
39a53e0c 1050void invalidate_blocks(struct f2fs_sb_info *, block_t);
39a53e0c
JK		 1051void clear_prefree_segments(struct f2fs_sb_info *);
1052int npages_for_summary_flush(struct f2fs_sb_info *);
1053void allocate_new_segments(struct f2fs_sb_info *);
1054struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
3cd8a239 1055struct bio *f2fs_bio_alloc(struct block_device *, int);
a569469e
JX		 1056void f2fs_submit_bio(struct f2fs_sb_info *, enum page_type, bool);
1057void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
577e3495 1058void write_meta_page(struct f2fs_sb_info *, struct page *);
39a53e0c
JK		 1059void write_node_page(struct f2fs_sb_info *, struct page *, unsigned int,
1060 block_t, block_t *);
1061void write_data_page(struct inode *, struct page *, struct dnode_of_data*,
1062 block_t, block_t *);
1063void rewrite_data_page(struct f2fs_sb_info *, struct page *, block_t);
1064void recover_data_page(struct f2fs_sb_info *, struct page *,
1065 struct f2fs_summary *, block_t, block_t);
1066void rewrite_node_page(struct f2fs_sb_info *, struct page *,
1067 struct f2fs_summary *, block_t, block_t);
1068void write_data_summaries(struct f2fs_sb_info *, block_t);
1069void write_node_summaries(struct f2fs_sb_info *, block_t);
1070int lookup_journal_in_cursum(struct f2fs_summary_block *,
1071 int, unsigned int, int);
1072void flush_sit_entries(struct f2fs_sb_info *);
1073int build_segment_manager(struct f2fs_sb_info *);
39a53e0c
JK		 1074void destroy_segment_manager(struct f2fs_sb_info *);
1075
1076/*
1077 * checkpoint.c
1078 */
1079struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1080struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
1081long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
cbd56e7d
JK		 1082int acquire_orphan_inode(struct f2fs_sb_info *);
1083void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK		 1084void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1085void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
1086int recover_orphan_inodes(struct f2fs_sb_info *);
1087int get_valid_checkpoint(struct f2fs_sb_info *);
1088void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1089void add_dirty_dir_inode(struct inode *);
39a53e0c 1090void remove_dirty_dir_inode(struct inode *);
74d0b917 1091struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t);
39a53e0c 1092void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1093void write_checkpoint(struct f2fs_sb_info *, bool);
39a53e0c 1094void init_orphan_info(struct f2fs_sb_info *);
6e6093a8 1095int __init create_checkpoint_caches(void);
39a53e0c
JK		 1096void destroy_checkpoint_caches(void);
1097
1098/*
1099 * data.c
1100 */
1101int reserve_new_block(struct dnode_of_data *);
1102void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1103struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1104struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1105struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
39a53e0c
JK		 1106int f2fs_readpage(struct f2fs_sb_info *, struct page *, block_t, int);
1107int do_write_data_page(struct page *);
1108
1109/*
1110 * gc.c
1111 */
1112int start_gc_thread(struct f2fs_sb_info *);
1113void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1114block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1115int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1116void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1117int __init create_gc_caches(void);
39a53e0c
JK		 1118void destroy_gc_caches(void);
1119
1120/*
1121 * recovery.c
1122 */
6ead1142 1123int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK		 1124bool space_for_roll_forward(struct f2fs_sb_info *);
1125
1126/*
1127 * debug.c
1128 */
1129#ifdef CONFIG_F2FS_STAT_FS
1130struct f2fs_stat_info {
1131 struct list_head stat_list;
1132 struct f2fs_sb_info *sbi;
1133 struct mutex stat_lock;
1134 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1135 int main_area_segs, main_area_sections, main_area_zones;
1136 int hit_ext, total_ext;
1137 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1138 int nats, sits, fnids;
1139 int total_count, utilization;
1140 int bg_gc;
1141 unsigned int valid_count, valid_node_count, valid_inode_count;
1142 unsigned int bimodal, avg_vblocks;
1143 int util_free, util_valid, util_invalid;
1144 int rsvd_segs, overp_segs;
1145 int dirty_count, node_pages, meta_pages;
1146 int prefree_count, call_count;
1147 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1148 int tot_blks, data_blks, node_blks;
1149 int curseg[NR_CURSEG_TYPE];
1150 int cursec[NR_CURSEG_TYPE];
1151 int curzone[NR_CURSEG_TYPE];
1152
1153 unsigned int segment_count[2];
1154 unsigned int block_count[2];
1155 unsigned base_mem, cache_mem;
1156};
1157
963d4f7d
GZ		 1158static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1159{
1160 return (struct f2fs_stat_info*)sbi->stat_info;
1161}
1162
dcdfff65
JK		 1163#define stat_inc_call_count(si) ((si)->call_count++)
1164#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1165#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1166#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1167#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1168#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
1169#define stat_inc_seg_type(sbi, curseg) \
1170 ((sbi)->segment_count[(curseg)->alloc_type]++)
1171#define stat_inc_block_count(sbi, curseg) \
1172 ((sbi)->block_count[(curseg)->alloc_type]++)
39a53e0c
JK		 1173
1174#define stat_inc_seg_count(sbi, type) \
1175 do { \
963d4f7d 1176 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1177 (si)->tot_segs++; \
1178 if (type == SUM_TYPE_DATA) \
1179 si->data_segs++; \
1180 else \
1181 si->node_segs++; \
1182 } while (0)
1183
1184#define stat_inc_tot_blk_count(si, blks) \
1185 (si->tot_blks += (blks))
1186
1187#define stat_inc_data_blk_count(sbi, blks) \
1188 do { \
963d4f7d 1189 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1190 stat_inc_tot_blk_count(si, blks); \
1191 si->data_blks += (blks); \
1192 } while (0)
1193
1194#define stat_inc_node_blk_count(sbi, blks) \
1195 do { \
963d4f7d 1196 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK		 1197 stat_inc_tot_blk_count(si, blks); \
1198 si->node_blks += (blks); \
1199 } while (0)
1200
1201int f2fs_build_stats(struct f2fs_sb_info *);
1202void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1203void __init f2fs_create_root_stats(void);
4589d25d 1204void f2fs_destroy_root_stats(void);
39a53e0c
JK		 1205#else
1206#define stat_inc_call_count(si)
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JK		 1207#define stat_inc_bggc_count(si)
1208#define stat_inc_dirty_dir(sbi)
1209#define stat_dec_dirty_dir(sbi)
1210#define stat_inc_total_hit(sb)
1211#define stat_inc_read_hit(sb)
1212#define stat_inc_seg_type(sbi, curseg)
1213#define stat_inc_block_count(sbi, curseg)
39a53e0c
JK		 1214#define stat_inc_seg_count(si, type)
1215#define stat_inc_tot_blk_count(si, blks)
1216#define stat_inc_data_blk_count(si, blks)
1217#define stat_inc_node_blk_count(sbi, blks)
1218
1219static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1220static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1221static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1222static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK		 1223#endif
1224
1225extern const struct file_operations f2fs_dir_operations;
1226extern const struct file_operations f2fs_file_operations;
1227extern const struct inode_operations f2fs_file_inode_operations;
1228extern const struct address_space_operations f2fs_dblock_aops;
1229extern const struct address_space_operations f2fs_node_aops;
1230extern const struct address_space_operations f2fs_meta_aops;
1231extern const struct inode_operations f2fs_dir_inode_operations;
1232extern const struct inode_operations f2fs_symlink_inode_operations;
1233extern const struct inode_operations f2fs_special_inode_operations;
1234#endif
Linux 6.x block layer and io_uring tree(s)