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0a8165d7 1/*
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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>
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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
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23#ifdef CONFIG_F2FS_CHECK_FS
24#define f2fs_bug_on(condition) BUG_ON(condition)
0daaad97 25#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
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26#else
27#define f2fs_bug_on(condition)
0daaad97 28#define f2fs_down_write(x, y) down_write(x)
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29#endif
30
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31/*
32 * For mount options
33 */
34#define F2FS_MOUNT_BG_GC 0x00000001
35#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
36#define F2FS_MOUNT_DISCARD 0x00000004
37#define F2FS_MOUNT_NOHEAP 0x00000008
38#define F2FS_MOUNT_XATTR_USER 0x00000010
39#define F2FS_MOUNT_POSIX_ACL 0x00000020
40#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 41#define F2FS_MOUNT_INLINE_XATTR 0x00000080
1001b347 42#define F2FS_MOUNT_INLINE_DATA 0x00000100
6b4afdd7 43#define F2FS_MOUNT_FLUSH_MERGE 0x00000200
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44
45#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
46#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
47#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
48
49#define ver_after(a, b) (typecheck(unsigned long long, a) && \
50 typecheck(unsigned long long, b) && \
51 ((long long)((a) - (b)) > 0))
52
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53typedef u32 block_t; /*
54 * should not change u32, since it is the on-disk block
55 * address format, __le32.
56 */
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57typedef u32 nid_t;
58
59struct f2fs_mount_info {
60 unsigned int opt;
61};
62
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63#define CRCPOLY_LE 0xedb88320
64
65static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 66{
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67 unsigned char *p = (unsigned char *)buf;
68 __u32 crc = F2FS_SUPER_MAGIC;
69 int i;
70
71 while (len--) {
72 crc ^= *p++;
73 for (i = 0; i < 8; i++)
74 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
75 }
76 return crc;
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77}
78
7e586fa0 79static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 80{
7e586fa0 81 return f2fs_crc32(buf, buf_size) == blk_crc;
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82}
83
84/*
85 * For checkpoint manager
86 */
87enum {
88 NAT_BITMAP,
89 SIT_BITMAP
90};
91
662befda 92/*
81c1a0f1 93 * For CP/NAT/SIT/SSA readahead
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94 */
95enum {
96 META_CP,
97 META_NAT,
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98 META_SIT,
99 META_SSA
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100};
101
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102/* for the list of orphan inodes */
103struct orphan_inode_entry {
104 struct list_head list; /* list head */
105 nid_t ino; /* inode number */
106};
107
108/* for the list of directory inodes */
109struct dir_inode_entry {
110 struct list_head list; /* list head */
111 struct inode *inode; /* vfs inode pointer */
112};
113
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114/* for the list of blockaddresses to be discarded */
115struct discard_entry {
116 struct list_head list; /* list head */
117 block_t blkaddr; /* block address to be discarded */
118 int len; /* # of consecutive blocks of the discard */
119};
120
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121/* for the list of fsync inodes, used only during recovery */
122struct fsync_inode_entry {
123 struct list_head list; /* list head */
124 struct inode *inode; /* vfs inode pointer */
125 block_t blkaddr; /* block address locating the last inode */
126};
127
128#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
129#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
130
131#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
132#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
133#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
134#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
135
136static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
137{
138 int before = nats_in_cursum(rs);
139 rs->n_nats = cpu_to_le16(before + i);
140 return before;
141}
142
143static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
144{
145 int before = sits_in_cursum(rs);
146 rs->n_sits = cpu_to_le16(before + i);
147 return before;
148}
149
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150/*
151 * ioctl commands
152 */
153#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
154#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
155
156#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
157/*
158 * ioctl commands in 32 bit emulation
159 */
160#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
161#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
162#endif
163
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164/*
165 * For INODE and NODE manager
166 */
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167/*
168 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
169 * as its node offset to distinguish from index node blocks.
170 * But some bits are used to mark the node block.
171 */
172#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
173 >> OFFSET_BIT_SHIFT)
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174enum {
175 ALLOC_NODE, /* allocate a new node page if needed */
176 LOOKUP_NODE, /* look up a node without readahead */
177 LOOKUP_NODE_RA, /*
178 * look up a node with readahead called
4f4124d0 179 * by get_data_block.
39a53e0c 180 */
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181};
182
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183#define F2FS_LINK_MAX 32000 /* maximum link count per file */
184
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185#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
186
39a53e0c 187/* for in-memory extent cache entry */
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188#define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
189
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190struct extent_info {
191 rwlock_t ext_lock; /* rwlock for consistency */
192 unsigned int fofs; /* start offset in a file */
193 u32 blk_addr; /* start block address of the extent */
111d2495 194 unsigned int len; /* length of the extent */
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195};
196
197/*
198 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
199 */
200#define FADVISE_COLD_BIT 0x01
354a3399 201#define FADVISE_LOST_PINO_BIT 0x02
39a53e0c 202
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203#define DEF_DIR_LEVEL 0
204
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205struct f2fs_inode_info {
206 struct inode vfs_inode; /* serve a vfs inode */
207 unsigned long i_flags; /* keep an inode flags for ioctl */
208 unsigned char i_advise; /* use to give file attribute hints */
38431545 209 unsigned char i_dir_level; /* use for dentry level for large dir */
39a53e0c 210 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 211 unsigned int i_pino; /* parent inode number */
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212 umode_t i_acl_mode; /* keep file acl mode temporarily */
213
214 /* Use below internally in f2fs*/
215 unsigned long flags; /* use to pass per-file flags */
d928bfbf 216 struct rw_semaphore i_sem; /* protect fi info */
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217 atomic_t dirty_dents; /* # of dirty dentry pages */
218 f2fs_hash_t chash; /* hash value of given file name */
219 unsigned int clevel; /* maximum level of given file name */
220 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 221 unsigned long long xattr_ver; /* cp version of xattr modification */
39a53e0c 222 struct extent_info ext; /* in-memory extent cache entry */
ed57c27f 223 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
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224};
225
226static inline void get_extent_info(struct extent_info *ext,
227 struct f2fs_extent i_ext)
228{
229 write_lock(&ext->ext_lock);
230 ext->fofs = le32_to_cpu(i_ext.fofs);
231 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
232 ext->len = le32_to_cpu(i_ext.len);
233 write_unlock(&ext->ext_lock);
234}
235
236static inline void set_raw_extent(struct extent_info *ext,
237 struct f2fs_extent *i_ext)
238{
239 read_lock(&ext->ext_lock);
240 i_ext->fofs = cpu_to_le32(ext->fofs);
241 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
242 i_ext->len = cpu_to_le32(ext->len);
243 read_unlock(&ext->ext_lock);
244}
245
246struct f2fs_nm_info {
247 block_t nat_blkaddr; /* base disk address of NAT */
248 nid_t max_nid; /* maximum possible node ids */
7ee0eeab 249 nid_t available_nids; /* maximum available node ids */
39a53e0c 250 nid_t next_scan_nid; /* the next nid to be scanned */
cdfc41c1 251 unsigned int ram_thresh; /* control the memory footprint */
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252
253 /* NAT cache management */
254 struct radix_tree_root nat_root;/* root of the nat entry cache */
255 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
256 unsigned int nat_cnt; /* the # of cached nat entries */
257 struct list_head nat_entries; /* cached nat entry list (clean) */
258 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
259
260 /* free node ids management */
8a7ed66a 261 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
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262 struct list_head free_nid_list; /* a list for free nids */
263 spinlock_t free_nid_list_lock; /* protect free nid list */
264 unsigned int fcnt; /* the number of free node id */
265 struct mutex build_lock; /* lock for build free nids */
266
267 /* for checkpoint */
268 char *nat_bitmap; /* NAT bitmap pointer */
269 int bitmap_size; /* bitmap size */
270};
271
272/*
273 * this structure is used as one of function parameters.
274 * all the information are dedicated to a given direct node block determined
275 * by the data offset in a file.
276 */
277struct dnode_of_data {
278 struct inode *inode; /* vfs inode pointer */
279 struct page *inode_page; /* its inode page, NULL is possible */
280 struct page *node_page; /* cached direct node page */
281 nid_t nid; /* node id of the direct node block */
282 unsigned int ofs_in_node; /* data offset in the node page */
283 bool inode_page_locked; /* inode page is locked or not */
284 block_t data_blkaddr; /* block address of the node block */
285};
286
287static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
288 struct page *ipage, struct page *npage, nid_t nid)
289{
d66d1f76 290 memset(dn, 0, sizeof(*dn));
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291 dn->inode = inode;
292 dn->inode_page = ipage;
293 dn->node_page = npage;
294 dn->nid = nid;
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295}
296
297/*
298 * For SIT manager
299 *
300 * By default, there are 6 active log areas across the whole main area.
301 * When considering hot and cold data separation to reduce cleaning overhead,
302 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
303 * respectively.
304 * In the current design, you should not change the numbers intentionally.
305 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
306 * logs individually according to the underlying devices. (default: 6)
307 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
308 * data and 8 for node logs.
309 */
310#define NR_CURSEG_DATA_TYPE (3)
311#define NR_CURSEG_NODE_TYPE (3)
312#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
313
314enum {
315 CURSEG_HOT_DATA = 0, /* directory entry blocks */
316 CURSEG_WARM_DATA, /* data blocks */
317 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
318 CURSEG_HOT_NODE, /* direct node blocks of directory files */
319 CURSEG_WARM_NODE, /* direct node blocks of normal files */
320 CURSEG_COLD_NODE, /* indirect node blocks */
321 NO_CHECK_TYPE
322};
323
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324struct flush_cmd {
325 struct flush_cmd *next;
326 struct completion wait;
327 int ret;
328};
329
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330struct flush_cmd_control {
331 struct task_struct *f2fs_issue_flush; /* flush thread */
332 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
333 struct flush_cmd *issue_list; /* list for command issue */
334 struct flush_cmd *dispatch_list; /* list for command dispatch */
335 spinlock_t issue_lock; /* for issue list lock */
336 struct flush_cmd *issue_tail; /* list tail of issue list */
337};
338
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339struct f2fs_sm_info {
340 struct sit_info *sit_info; /* whole segment information */
341 struct free_segmap_info *free_info; /* free segment information */
342 struct dirty_seglist_info *dirty_info; /* dirty segment information */
343 struct curseg_info *curseg_array; /* active segment information */
344
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345 block_t seg0_blkaddr; /* block address of 0'th segment */
346 block_t main_blkaddr; /* start block address of main area */
347 block_t ssa_blkaddr; /* start block address of SSA area */
348
349 unsigned int segment_count; /* total # of segments */
350 unsigned int main_segments; /* # of segments in main area */
351 unsigned int reserved_segments; /* # of reserved segments */
352 unsigned int ovp_segments; /* # of overprovision segments */
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353
354 /* a threshold to reclaim prefree segments */
355 unsigned int rec_prefree_segments;
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356
357 /* for small discard management */
358 struct list_head discard_list; /* 4KB discard list */
359 int nr_discards; /* # of discards in the list */
360 int max_discards; /* max. discards to be issued */
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361
362 unsigned int ipu_policy; /* in-place-update policy */
363 unsigned int min_ipu_util; /* in-place-update threshold */
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364
365 /* for flush command control */
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366 struct flush_cmd_control *cmd_control_info;
367
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368};
369
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370/*
371 * For superblock
372 */
373/*
374 * COUNT_TYPE for monitoring
375 *
376 * f2fs monitors the number of several block types such as on-writeback,
377 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
378 */
379enum count_type {
380 F2FS_WRITEBACK,
381 F2FS_DIRTY_DENTS,
382 F2FS_DIRTY_NODES,
383 F2FS_DIRTY_META,
384 NR_COUNT_TYPE,
385};
386
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387/*
388 * The below are the page types of bios used in submti_bio().
389 * The available types are:
390 * DATA User data pages. It operates as async mode.
391 * NODE Node pages. It operates as async mode.
392 * META FS metadata pages such as SIT, NAT, CP.
393 * NR_PAGE_TYPE The number of page types.
394 * META_FLUSH Make sure the previous pages are written
395 * with waiting the bio's completion
396 * ... Only can be used with META.
397 */
7d5e5109 398#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
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399enum page_type {
400 DATA,
401 NODE,
402 META,
403 NR_PAGE_TYPE,
404 META_FLUSH,
405};
406
458e6197 407struct f2fs_io_info {
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408 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
409 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
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410};
411
93dfe2ac 412#define is_read_io(rw) (((rw) & 1) == READ)
1ff7bd3b 413struct f2fs_bio_info {
458e6197 414 struct f2fs_sb_info *sbi; /* f2fs superblock */
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415 struct bio *bio; /* bios to merge */
416 sector_t last_block_in_bio; /* last block number */
458e6197 417 struct f2fs_io_info fio; /* store buffered io info. */
df0f8dc0 418 struct rw_semaphore io_rwsem; /* blocking op for bio */
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419};
420
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421struct f2fs_sb_info {
422 struct super_block *sb; /* pointer to VFS super block */
5e176d54 423 struct proc_dir_entry *s_proc; /* proc entry */
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424 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
425 struct f2fs_super_block *raw_super; /* raw super block pointer */
426 int s_dirty; /* dirty flag for checkpoint */
427
428 /* for node-related operations */
429 struct f2fs_nm_info *nm_info; /* node manager */
430 struct inode *node_inode; /* cache node blocks */
431
432 /* for segment-related operations */
433 struct f2fs_sm_info *sm_info; /* segment manager */
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434
435 /* for bio operations */
924b720b 436 struct f2fs_bio_info read_io; /* for read bios */
1ff7bd3b 437 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
1b1f559f 438 struct completion *wait_io; /* for completion bios */
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439
440 /* for checkpoint */
441 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
442 struct inode *meta_inode; /* cache meta blocks */
39936837 443 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 444 struct rw_semaphore cp_rwsem; /* blocking FS operations */
39936837 445 struct mutex node_write; /* locking node writes */
39a53e0c 446 struct mutex writepages; /* mutex for writepages() */
aabe5136 447 bool por_doing; /* recovery is doing or not */
fb51b5ef 448 wait_queue_head_t cp_wait;
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449
450 /* for orphan inode management */
451 struct list_head orphan_inode_list; /* orphan inode list */
17b692f6 452 spinlock_t orphan_inode_lock; /* for orphan inode list */
39a53e0c 453 unsigned int n_orphans; /* # of orphan inodes */
0d47c1ad 454 unsigned int max_orphans; /* max orphan inodes */
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455
456 /* for directory inode management */
457 struct list_head dir_inode_list; /* dir inode list */
458 spinlock_t dir_inode_lock; /* for dir inode list lock */
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459
460 /* basic file system units */
461 unsigned int log_sectors_per_block; /* log2 sectors per block */
462 unsigned int log_blocksize; /* log2 block size */
463 unsigned int blocksize; /* block size */
464 unsigned int root_ino_num; /* root inode number*/
465 unsigned int node_ino_num; /* node inode number*/
466 unsigned int meta_ino_num; /* meta inode number*/
467 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
468 unsigned int blocks_per_seg; /* blocks per segment */
469 unsigned int segs_per_sec; /* segments per section */
470 unsigned int secs_per_zone; /* sections per zone */
471 unsigned int total_sections; /* total section count */
472 unsigned int total_node_count; /* total node block count */
473 unsigned int total_valid_node_count; /* valid node block count */
474 unsigned int total_valid_inode_count; /* valid inode count */
475 int active_logs; /* # of active logs */
ab9fa662 476 int dir_level; /* directory level */
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477
478 block_t user_block_count; /* # of user blocks */
479 block_t total_valid_block_count; /* # of valid blocks */
480 block_t alloc_valid_block_count; /* # of allocated blocks */
481 block_t last_valid_block_count; /* for recovery */
482 u32 s_next_generation; /* for NFS support */
483 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
484
485 struct f2fs_mount_info mount_opt; /* mount options */
486
487 /* for cleaning operations */
488 struct mutex gc_mutex; /* mutex for GC */
489 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 490 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c 491
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492 /* maximum # of trials to find a victim segment for SSR and GC */
493 unsigned int max_victim_search;
494
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495 /*
496 * for stat information.
497 * one is for the LFS mode, and the other is for the SSR mode.
498 */
35b09d82 499#ifdef CONFIG_F2FS_STAT_FS
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500 struct f2fs_stat_info *stat_info; /* FS status information */
501 unsigned int segment_count[2]; /* # of allocated segments */
502 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c 503 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
0dbdc2ae 504 int inline_inode; /* # of inline_data inodes */
39a53e0c 505 int bg_gc; /* background gc calls */
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506 unsigned int n_dirty_dirs; /* # of dir inodes */
507#endif
508 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 509 spinlock_t stat_lock; /* lock for stat operations */
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510
511 /* For sysfs suppport */
512 struct kobject s_kobj;
513 struct completion s_kobj_unregister;
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514};
515
516/*
517 * Inline functions
518 */
519static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
520{
521 return container_of(inode, struct f2fs_inode_info, vfs_inode);
522}
523
524static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
525{
526 return sb->s_fs_info;
527}
528
529static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
530{
531 return (struct f2fs_super_block *)(sbi->raw_super);
532}
533
534static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
535{
536 return (struct f2fs_checkpoint *)(sbi->ckpt);
537}
538
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539static inline struct f2fs_node *F2FS_NODE(struct page *page)
540{
541 return (struct f2fs_node *)page_address(page);
542}
543
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544static inline struct f2fs_inode *F2FS_INODE(struct page *page)
545{
546 return &((struct f2fs_node *)page_address(page))->i;
547}
548
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549static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
550{
551 return (struct f2fs_nm_info *)(sbi->nm_info);
552}
553
554static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
555{
556 return (struct f2fs_sm_info *)(sbi->sm_info);
557}
558
559static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
560{
561 return (struct sit_info *)(SM_I(sbi)->sit_info);
562}
563
564static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
565{
566 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
567}
568
569static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
570{
571 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
572}
573
9df27d98
GZ
574static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
575{
576 return sbi->meta_inode->i_mapping;
577}
578
4ef51a8f
JK
579static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
580{
581 return sbi->node_inode->i_mapping;
582}
583
39a53e0c
JK
584static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
585{
586 sbi->s_dirty = 1;
587}
588
589static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
590{
591 sbi->s_dirty = 0;
592}
593
d71b5564
JK
594static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
595{
596 return le64_to_cpu(cp->checkpoint_ver);
597}
598
25ca923b
JK
599static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
600{
601 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
602 return ckpt_flags & f;
603}
604
605static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
606{
607 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
608 ckpt_flags |= f;
609 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
610}
611
612static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
613{
614 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
615 ckpt_flags &= (~f);
616 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
617}
618
e479556b 619static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 620{
e479556b 621 down_read(&sbi->cp_rwsem);
39936837
JK
622}
623
e479556b 624static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 625{
e479556b 626 up_read(&sbi->cp_rwsem);
39a53e0c
JK
627}
628
e479556b 629static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 630{
0daaad97 631 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK
632}
633
e479556b 634static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 635{
e479556b 636 up_write(&sbi->cp_rwsem);
39a53e0c
JK
637}
638
639/*
640 * Check whether the given nid is within node id range.
641 */
064e0823 642static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 643{
d6b7d4b3
CY
644 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
645 return -EINVAL;
cfb271d4 646 if (unlikely(nid >= NM_I(sbi)->max_nid))
064e0823
NJ
647 return -EINVAL;
648 return 0;
39a53e0c
JK
649}
650
651#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
652
653/*
654 * Check whether the inode has blocks or not
655 */
656static inline int F2FS_HAS_BLOCKS(struct inode *inode)
657{
658 if (F2FS_I(inode)->i_xattr_nid)
6c311ec6 659 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
39a53e0c 660 else
6c311ec6 661 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
39a53e0c
JK
662}
663
4bc8e9bc
CY
664static inline bool f2fs_has_xattr_block(unsigned int ofs)
665{
666 return ofs == XATTR_NODE_OFFSET;
667}
668
39a53e0c
JK
669static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
670 struct inode *inode, blkcnt_t count)
671{
672 block_t valid_block_count;
673
674 spin_lock(&sbi->stat_lock);
675 valid_block_count =
676 sbi->total_valid_block_count + (block_t)count;
cfb271d4 677 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
678 spin_unlock(&sbi->stat_lock);
679 return false;
680 }
681 inode->i_blocks += count;
682 sbi->total_valid_block_count = valid_block_count;
683 sbi->alloc_valid_block_count += (block_t)count;
684 spin_unlock(&sbi->stat_lock);
685 return true;
686}
687
da19b0dc 688static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
39a53e0c
JK
689 struct inode *inode,
690 blkcnt_t count)
691{
692 spin_lock(&sbi->stat_lock);
5d56b671
JK
693 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count);
694 f2fs_bug_on(inode->i_blocks < count);
39a53e0c
JK
695 inode->i_blocks -= count;
696 sbi->total_valid_block_count -= (block_t)count;
697 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
698}
699
700static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
701{
702 atomic_inc(&sbi->nr_pages[count_type]);
703 F2FS_SET_SB_DIRT(sbi);
704}
705
706static inline void inode_inc_dirty_dents(struct inode *inode)
707{
1fe54f9d 708 inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
39a53e0c
JK
709 atomic_inc(&F2FS_I(inode)->dirty_dents);
710}
711
712static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
713{
714 atomic_dec(&sbi->nr_pages[count_type]);
715}
716
717static inline void inode_dec_dirty_dents(struct inode *inode)
718{
1fe54f9d
JK
719 if (!S_ISDIR(inode->i_mode))
720 return;
721
722 dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
39a53e0c
JK
723 atomic_dec(&F2FS_I(inode)->dirty_dents);
724}
725
726static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
727{
728 return atomic_read(&sbi->nr_pages[count_type]);
729}
730
f8b2c1f9
JK
731static inline int get_dirty_dents(struct inode *inode)
732{
733 return atomic_read(&F2FS_I(inode)->dirty_dents);
734}
735
5ac206cf
NJ
736static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
737{
738 unsigned int pages_per_sec = sbi->segs_per_sec *
739 (1 << sbi->log_blocks_per_seg);
740 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
741 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
742}
743
39a53e0c
JK
744static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
745{
8b8343fa 746 return sbi->total_valid_block_count;
39a53e0c
JK
747}
748
749static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
750{
751 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
752
753 /* return NAT or SIT bitmap */
754 if (flag == NAT_BITMAP)
755 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
756 else if (flag == SIT_BITMAP)
757 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
758
759 return 0;
760}
761
762static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
763{
764 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1dbe4152
CL
765 int offset;
766
767 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
768 if (flag == NAT_BITMAP)
769 return &ckpt->sit_nat_version_bitmap;
770 else
771 return ((unsigned char *)ckpt + F2FS_BLKSIZE);
772 } else {
773 offset = (flag == NAT_BITMAP) ?
25ca923b 774 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1dbe4152
CL
775 return &ckpt->sit_nat_version_bitmap + offset;
776 }
39a53e0c
JK
777}
778
779static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
780{
781 block_t start_addr;
782 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 783 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 784
25ca923b 785 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK
786
787 /*
788 * odd numbered checkpoint should at cp segment 0
789 * and even segent must be at cp segment 1
790 */
791 if (!(ckpt_version & 1))
792 start_addr += sbi->blocks_per_seg;
793
794 return start_addr;
795}
796
797static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
798{
799 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
800}
801
802static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 803 struct inode *inode)
39a53e0c
JK
804{
805 block_t valid_block_count;
806 unsigned int valid_node_count;
807
808 spin_lock(&sbi->stat_lock);
809
ef86d709 810 valid_block_count = sbi->total_valid_block_count + 1;
cfb271d4 811 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
812 spin_unlock(&sbi->stat_lock);
813 return false;
814 }
815
ef86d709 816 valid_node_count = sbi->total_valid_node_count + 1;
cfb271d4 817 if (unlikely(valid_node_count > sbi->total_node_count)) {
39a53e0c
JK
818 spin_unlock(&sbi->stat_lock);
819 return false;
820 }
821
822 if (inode)
ef86d709
GZ
823 inode->i_blocks++;
824
825 sbi->alloc_valid_block_count++;
826 sbi->total_valid_node_count++;
827 sbi->total_valid_block_count++;
39a53e0c
JK
828 spin_unlock(&sbi->stat_lock);
829
830 return true;
831}
832
833static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 834 struct inode *inode)
39a53e0c
JK
835{
836 spin_lock(&sbi->stat_lock);
837
ef86d709
GZ
838 f2fs_bug_on(!sbi->total_valid_block_count);
839 f2fs_bug_on(!sbi->total_valid_node_count);
840 f2fs_bug_on(!inode->i_blocks);
39a53e0c 841
ef86d709
GZ
842 inode->i_blocks--;
843 sbi->total_valid_node_count--;
844 sbi->total_valid_block_count--;
39a53e0c
JK
845
846 spin_unlock(&sbi->stat_lock);
847}
848
849static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
850{
8b8343fa 851 return sbi->total_valid_node_count;
39a53e0c
JK
852}
853
854static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
855{
856 spin_lock(&sbi->stat_lock);
5d56b671 857 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK
858 sbi->total_valid_inode_count++;
859 spin_unlock(&sbi->stat_lock);
860}
861
0e80220a 862static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
39a53e0c
JK
863{
864 spin_lock(&sbi->stat_lock);
5d56b671 865 f2fs_bug_on(!sbi->total_valid_inode_count);
39a53e0c
JK
866 sbi->total_valid_inode_count--;
867 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
868}
869
870static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
871{
8b8343fa 872 return sbi->total_valid_inode_count;
39a53e0c
JK
873}
874
875static inline void f2fs_put_page(struct page *page, int unlock)
876{
031fa8cc 877 if (!page)
39a53e0c
JK
878 return;
879
880 if (unlock) {
5d56b671 881 f2fs_bug_on(!PageLocked(page));
39a53e0c
JK
882 unlock_page(page);
883 }
884 page_cache_release(page);
885}
886
887static inline void f2fs_put_dnode(struct dnode_of_data *dn)
888{
889 if (dn->node_page)
890 f2fs_put_page(dn->node_page, 1);
891 if (dn->inode_page && dn->node_page != dn->inode_page)
892 f2fs_put_page(dn->inode_page, 0);
893 dn->node_page = NULL;
894 dn->inode_page = NULL;
895}
896
897static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
e8512d2e 898 size_t size)
39a53e0c 899{
e8512d2e 900 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
39a53e0c
JK
901}
902
7bd59381
GZ
903static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
904 gfp_t flags)
905{
906 void *entry;
907retry:
908 entry = kmem_cache_alloc(cachep, flags);
909 if (!entry) {
910 cond_resched();
911 goto retry;
912 }
913
914 return entry;
915}
916
39a53e0c
JK
917#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
918
919static inline bool IS_INODE(struct page *page)
920{
45590710 921 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK
922 return RAW_IS_INODE(p);
923}
924
925static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
926{
927 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
928}
929
930static inline block_t datablock_addr(struct page *node_page,
931 unsigned int offset)
932{
933 struct f2fs_node *raw_node;
934 __le32 *addr_array;
45590710 935 raw_node = F2FS_NODE(node_page);
39a53e0c
JK
936 addr_array = blkaddr_in_node(raw_node);
937 return le32_to_cpu(addr_array[offset]);
938}
939
940static inline int f2fs_test_bit(unsigned int nr, char *addr)
941{
942 int mask;
943
944 addr += (nr >> 3);
945 mask = 1 << (7 - (nr & 0x07));
946 return mask & *addr;
947}
948
949static inline int f2fs_set_bit(unsigned int nr, char *addr)
950{
951 int mask;
952 int ret;
953
954 addr += (nr >> 3);
955 mask = 1 << (7 - (nr & 0x07));
956 ret = mask & *addr;
957 *addr |= mask;
958 return ret;
959}
960
961static inline int f2fs_clear_bit(unsigned int nr, char *addr)
962{
963 int mask;
964 int ret;
965
966 addr += (nr >> 3);
967 mask = 1 << (7 - (nr & 0x07));
968 ret = mask & *addr;
969 *addr &= ~mask;
970 return ret;
971}
972
973/* used for f2fs_inode_info->flags */
974enum {
975 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 976 FI_DIRTY_INODE, /* indicate inode is dirty or not */
ed57c27f 977 FI_DIRTY_DIR, /* indicate directory has dirty pages */
39a53e0c
JK
978 FI_INC_LINK, /* need to increment i_nlink */
979 FI_ACL_MODE, /* indicate acl mode */
980 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 981 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 982 FI_DELAY_IPUT, /* used for the recovery */
c11abd1a 983 FI_NO_EXTENT, /* not to use the extent cache */
444c580f 984 FI_INLINE_XATTR, /* used for inline xattr */
1001b347 985 FI_INLINE_DATA, /* used for inline data*/
39a53e0c
JK
986};
987
988static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
989{
990 set_bit(flag, &fi->flags);
991}
992
993static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
994{
995 return test_bit(flag, &fi->flags);
996}
997
998static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
999{
1000 clear_bit(flag, &fi->flags);
1001}
1002
1003static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1004{
1005 fi->i_acl_mode = mode;
1006 set_inode_flag(fi, FI_ACL_MODE);
1007}
1008
1009static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1010{
1011 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1012 clear_inode_flag(fi, FI_ACL_MODE);
1013 return 1;
1014 }
1015 return 0;
1016}
1017
444c580f
JK
1018static inline void get_inline_info(struct f2fs_inode_info *fi,
1019 struct f2fs_inode *ri)
1020{
1021 if (ri->i_inline & F2FS_INLINE_XATTR)
1022 set_inode_flag(fi, FI_INLINE_XATTR);
1001b347
HL
1023 if (ri->i_inline & F2FS_INLINE_DATA)
1024 set_inode_flag(fi, FI_INLINE_DATA);
444c580f
JK
1025}
1026
1027static inline void set_raw_inline(struct f2fs_inode_info *fi,
1028 struct f2fs_inode *ri)
1029{
1030 ri->i_inline = 0;
1031
1032 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1033 ri->i_inline |= F2FS_INLINE_XATTR;
1001b347
HL
1034 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1035 ri->i_inline |= F2FS_INLINE_DATA;
444c580f
JK
1036}
1037
987c7c31
CY
1038static inline int f2fs_has_inline_xattr(struct inode *inode)
1039{
1040 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1041}
1042
de93653f
JK
1043static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1044{
987c7c31 1045 if (f2fs_has_inline_xattr(&fi->vfs_inode))
de93653f
JK
1046 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1047 return DEF_ADDRS_PER_INODE;
1048}
1049
65985d93
JK
1050static inline void *inline_xattr_addr(struct page *page)
1051{
695fd1ed 1052 struct f2fs_inode *ri = F2FS_INODE(page);
65985d93
JK
1053 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1054 F2FS_INLINE_XATTR_ADDRS]);
1055}
1056
1057static inline int inline_xattr_size(struct inode *inode)
1058{
987c7c31 1059 if (f2fs_has_inline_xattr(inode))
65985d93
JK
1060 return F2FS_INLINE_XATTR_ADDRS << 2;
1061 else
1062 return 0;
1063}
1064
0dbdc2ae
JK
1065static inline int f2fs_has_inline_data(struct inode *inode)
1066{
1067 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1068}
1069
1001b347
HL
1070static inline void *inline_data_addr(struct page *page)
1071{
695fd1ed 1072 struct f2fs_inode *ri = F2FS_INODE(page);
1001b347
HL
1073 return (void *)&(ri->i_addr[1]);
1074}
1075
77888c1e
JK
1076static inline int f2fs_readonly(struct super_block *sb)
1077{
1078 return sb->s_flags & MS_RDONLY;
1079}
1080
744602cf
JK
1081static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1082{
1083 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1084 sbi->sb->s_flags |= MS_RDONLY;
1085}
1086
a6dda0e6
CH
1087#define get_inode_mode(i) \
1088 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1089 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1090
267378d4
CY
1091/* get offset of first page in next direct node */
1092#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1093 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1094 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1095 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1096
39a53e0c
JK
1097/*
1098 * file.c
1099 */
1100int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1101void truncate_data_blocks(struct dnode_of_data *);
1e1bb4ba 1102int truncate_blocks(struct inode *, u64);
39a53e0c 1103void f2fs_truncate(struct inode *);
2d4d9fb5 1104int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK
1105int f2fs_setattr(struct dentry *, struct iattr *);
1106int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 1107int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 1108long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 1109long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK
1110
1111/*
1112 * inode.c
1113 */
1114void f2fs_set_inode_flags(struct inode *);
39a53e0c 1115struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 1116int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 1117void update_inode(struct inode *, struct page *);
744602cf 1118void update_inode_page(struct inode *);
39a53e0c
JK
1119int f2fs_write_inode(struct inode *, struct writeback_control *);
1120void f2fs_evict_inode(struct inode *);
1121
1122/*
1123 * namei.c
1124 */
1125struct dentry *f2fs_get_parent(struct dentry *child);
1126
1127/*
1128 * dir.c
1129 */
1130struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1131 struct page **);
1132struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1133ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1134void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1135 struct page *, struct inode *);
1cd14caf 1136int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 1137int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c
JK
1138void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
1139int f2fs_make_empty(struct inode *, struct inode *);
1140bool f2fs_empty_dir(struct inode *);
1141
b7f7a5e0
AV
1142static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1143{
1144 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1145 inode);
1146}
1147
39a53e0c
JK
1148/*
1149 * super.c
1150 */
1151int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ
1152extern __printf(3, 4)
1153void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK
1154
1155/*
1156 * hash.c
1157 */
9836b8b9 1158f2fs_hash_t f2fs_dentry_hash(const char *, size_t);
39a53e0c
JK
1159
1160/*
1161 * node.c
1162 */
1163struct dnode_of_data;
1164struct node_info;
1165
6fb03f3a 1166bool available_free_memory(struct f2fs_sb_info *, int);
39a53e0c 1167int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
479f40c4 1168bool fsync_mark_done(struct f2fs_sb_info *, nid_t);
b6fe5873 1169void fsync_mark_clear(struct f2fs_sb_info *, nid_t);
39a53e0c
JK
1170void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1171int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1172int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1173int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1174int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
58e674d6 1175void remove_inode_page(struct inode *);
44a83ff6 1176struct page *new_inode_page(struct inode *, const struct qstr *);
8ae8f162 1177struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK
1178void ra_node_page(struct f2fs_sb_info *, nid_t);
1179struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1180struct page *get_node_page_ra(struct page *, int);
1181void sync_inode_page(struct dnode_of_data *);
1182int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1183bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1184void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1185void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1186void recover_node_page(struct f2fs_sb_info *, struct page *,
1187 struct f2fs_summary *, struct node_info *, block_t);
abb2366c 1188bool recover_xattr_data(struct inode *, struct page *, block_t);
39a53e0c
JK
1189int recover_inode_page(struct f2fs_sb_info *, struct page *);
1190int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1191 struct f2fs_summary_block *);
1192void flush_nat_entries(struct f2fs_sb_info *);
1193int build_node_manager(struct f2fs_sb_info *);
1194void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1195int __init create_node_manager_caches(void);
39a53e0c
JK
1196void destroy_node_manager_caches(void);
1197
1198/*
1199 * segment.c
1200 */
1201void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1202void f2fs_balance_fs_bg(struct f2fs_sb_info *);
6b4afdd7 1203int f2fs_issue_flush(struct f2fs_sb_info *);
2163d198
GZ
1204int create_flush_cmd_control(struct f2fs_sb_info *);
1205void destroy_flush_cmd_control(struct f2fs_sb_info *);
39a53e0c 1206void invalidate_blocks(struct f2fs_sb_info *, block_t);
5e443818 1207void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
39a53e0c 1208void clear_prefree_segments(struct f2fs_sb_info *);
1e87a78d 1209void discard_next_dnode(struct f2fs_sb_info *);
39a53e0c
JK
1210int npages_for_summary_flush(struct f2fs_sb_info *);
1211void allocate_new_segments(struct f2fs_sb_info *);
1212struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
577e3495 1213void write_meta_page(struct f2fs_sb_info *, struct page *);
fb5566da
JK
1214void write_node_page(struct f2fs_sb_info *, struct page *,
1215 struct f2fs_io_info *, unsigned int, block_t, block_t *);
458e6197
JK
1216void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1217 struct f2fs_io_info *);
1218void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
39a53e0c
JK
1219void recover_data_page(struct f2fs_sb_info *, struct page *,
1220 struct f2fs_summary *, block_t, block_t);
1221void rewrite_node_page(struct f2fs_sb_info *, struct page *,
1222 struct f2fs_summary *, block_t, block_t);
bfad7c2d
JK
1223void allocate_data_block(struct f2fs_sb_info *, struct page *,
1224 block_t, block_t *, struct f2fs_summary *, int);
5514f0aa 1225void f2fs_wait_on_page_writeback(struct page *, enum page_type);
39a53e0c
JK
1226void write_data_summaries(struct f2fs_sb_info *, block_t);
1227void write_node_summaries(struct f2fs_sb_info *, block_t);
1228int lookup_journal_in_cursum(struct f2fs_summary_block *,
1229 int, unsigned int, int);
1230void flush_sit_entries(struct f2fs_sb_info *);
1231int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1232void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK
1233int __init create_segment_manager_caches(void);
1234void destroy_segment_manager_caches(void);
39a53e0c
JK
1235
1236/*
1237 * checkpoint.c
1238 */
1239struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1240struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
662befda 1241int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
39a53e0c 1242long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
cbd56e7d
JK
1243int acquire_orphan_inode(struct f2fs_sb_info *);
1244void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK
1245void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1246void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
8f99a946 1247void recover_orphan_inodes(struct f2fs_sb_info *);
39a53e0c
JK
1248int get_valid_checkpoint(struct f2fs_sb_info *);
1249void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1250void add_dirty_dir_inode(struct inode *);
39a53e0c
JK
1251void remove_dirty_dir_inode(struct inode *);
1252void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1253void write_checkpoint(struct f2fs_sb_info *, bool);
39a53e0c 1254void init_orphan_info(struct f2fs_sb_info *);
6e6093a8 1255int __init create_checkpoint_caches(void);
39a53e0c
JK
1256void destroy_checkpoint_caches(void);
1257
1258/*
1259 * data.c
1260 */
458e6197 1261void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
93dfe2ac
JK
1262int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1263void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
458e6197 1264 struct f2fs_io_info *);
39a53e0c 1265int reserve_new_block(struct dnode_of_data *);
b600965c 1266int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
39a53e0c 1267void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1268struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1269struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1270struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
458e6197 1271int do_write_data_page(struct page *, struct f2fs_io_info *);
9ab70134 1272int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
39a53e0c
JK
1273
1274/*
1275 * gc.c
1276 */
1277int start_gc_thread(struct f2fs_sb_info *);
1278void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1279block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1280int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1281void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1282int __init create_gc_caches(void);
39a53e0c
JK
1283void destroy_gc_caches(void);
1284
1285/*
1286 * recovery.c
1287 */
6ead1142 1288int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK
1289bool space_for_roll_forward(struct f2fs_sb_info *);
1290
1291/*
1292 * debug.c
1293 */
1294#ifdef CONFIG_F2FS_STAT_FS
1295struct f2fs_stat_info {
1296 struct list_head stat_list;
1297 struct f2fs_sb_info *sbi;
1298 struct mutex stat_lock;
1299 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1300 int main_area_segs, main_area_sections, main_area_zones;
1301 int hit_ext, total_ext;
1302 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1303 int nats, sits, fnids;
1304 int total_count, utilization;
0dbdc2ae 1305 int bg_gc, inline_inode;
39a53e0c
JK
1306 unsigned int valid_count, valid_node_count, valid_inode_count;
1307 unsigned int bimodal, avg_vblocks;
1308 int util_free, util_valid, util_invalid;
1309 int rsvd_segs, overp_segs;
1310 int dirty_count, node_pages, meta_pages;
942e0be6 1311 int prefree_count, call_count, cp_count;
39a53e0c
JK
1312 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1313 int tot_blks, data_blks, node_blks;
1314 int curseg[NR_CURSEG_TYPE];
1315 int cursec[NR_CURSEG_TYPE];
1316 int curzone[NR_CURSEG_TYPE];
1317
1318 unsigned int segment_count[2];
1319 unsigned int block_count[2];
1320 unsigned base_mem, cache_mem;
1321};
1322
963d4f7d
GZ
1323static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1324{
6c311ec6 1325 return (struct f2fs_stat_info *)sbi->stat_info;
963d4f7d
GZ
1326}
1327
942e0be6 1328#define stat_inc_cp_count(si) ((si)->cp_count++)
dcdfff65
JK
1329#define stat_inc_call_count(si) ((si)->call_count++)
1330#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1331#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1332#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1333#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1334#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
0dbdc2ae
JK
1335#define stat_inc_inline_inode(inode) \
1336 do { \
1337 if (f2fs_has_inline_data(inode)) \
1338 ((F2FS_SB(inode->i_sb))->inline_inode++); \
1339 } while (0)
1340#define stat_dec_inline_inode(inode) \
1341 do { \
1342 if (f2fs_has_inline_data(inode)) \
1343 ((F2FS_SB(inode->i_sb))->inline_inode--); \
1344 } while (0)
1345
dcdfff65
JK
1346#define stat_inc_seg_type(sbi, curseg) \
1347 ((sbi)->segment_count[(curseg)->alloc_type]++)
1348#define stat_inc_block_count(sbi, curseg) \
1349 ((sbi)->block_count[(curseg)->alloc_type]++)
39a53e0c
JK
1350
1351#define stat_inc_seg_count(sbi, type) \
1352 do { \
963d4f7d 1353 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1354 (si)->tot_segs++; \
1355 if (type == SUM_TYPE_DATA) \
1356 si->data_segs++; \
1357 else \
1358 si->node_segs++; \
1359 } while (0)
1360
1361#define stat_inc_tot_blk_count(si, blks) \
1362 (si->tot_blks += (blks))
1363
1364#define stat_inc_data_blk_count(sbi, blks) \
1365 do { \
963d4f7d 1366 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1367 stat_inc_tot_blk_count(si, blks); \
1368 si->data_blks += (blks); \
1369 } while (0)
1370
1371#define stat_inc_node_blk_count(sbi, blks) \
1372 do { \
963d4f7d 1373 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1374 stat_inc_tot_blk_count(si, blks); \
1375 si->node_blks += (blks); \
1376 } while (0)
1377
1378int f2fs_build_stats(struct f2fs_sb_info *);
1379void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1380void __init f2fs_create_root_stats(void);
4589d25d 1381void f2fs_destroy_root_stats(void);
39a53e0c 1382#else
942e0be6 1383#define stat_inc_cp_count(si)
39a53e0c 1384#define stat_inc_call_count(si)
dcdfff65
JK
1385#define stat_inc_bggc_count(si)
1386#define stat_inc_dirty_dir(sbi)
1387#define stat_dec_dirty_dir(sbi)
1388#define stat_inc_total_hit(sb)
1389#define stat_inc_read_hit(sb)
0dbdc2ae
JK
1390#define stat_inc_inline_inode(inode)
1391#define stat_dec_inline_inode(inode)
dcdfff65
JK
1392#define stat_inc_seg_type(sbi, curseg)
1393#define stat_inc_block_count(sbi, curseg)
39a53e0c
JK
1394#define stat_inc_seg_count(si, type)
1395#define stat_inc_tot_blk_count(si, blks)
1396#define stat_inc_data_blk_count(si, blks)
1397#define stat_inc_node_blk_count(sbi, blks)
1398
1399static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1400static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1401static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1402static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK
1403#endif
1404
1405extern const struct file_operations f2fs_dir_operations;
1406extern const struct file_operations f2fs_file_operations;
1407extern const struct inode_operations f2fs_file_inode_operations;
1408extern const struct address_space_operations f2fs_dblock_aops;
1409extern const struct address_space_operations f2fs_node_aops;
1410extern const struct address_space_operations f2fs_meta_aops;
1411extern const struct inode_operations f2fs_dir_inode_operations;
1412extern const struct inode_operations f2fs_symlink_inode_operations;
1413extern const struct inode_operations f2fs_special_inode_operations;
1001b347 1414
e18c65b2
HL
1415/*
1416 * inline.c
1417 */
e18c65b2
HL
1418bool f2fs_may_inline(struct inode *);
1419int f2fs_read_inline_data(struct inode *, struct page *);
9e09fc85 1420int f2fs_convert_inline_data(struct inode *, pgoff_t);
e18c65b2 1421int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
8aa6f1c5 1422void truncate_inline_data(struct inode *, u64);
1e1bb4ba 1423int recover_inline_data(struct inode *, struct page *);
39a53e0c 1424#endif