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f2fs: use lock-less list(llist) to simplify the flush cmd management
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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
5d56b671 23#ifdef CONFIG_F2FS_CHECK_FS
9850cf4a 24#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
0daaad97 25#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
5d56b671 26#else
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27#define f2fs_bug_on(sbi, condition) \
28 do { \
29 if (unlikely(condition)) { \
30 WARN_ON(1); \
31 sbi->need_fsck = true; \
32 } \
33 } while (0)
0daaad97 34#define f2fs_down_write(x, y) down_write(x)
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35#endif
36
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37/*
38 * For mount options
39 */
40#define F2FS_MOUNT_BG_GC 0x00000001
41#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
42#define F2FS_MOUNT_DISCARD 0x00000004
43#define F2FS_MOUNT_NOHEAP 0x00000008
44#define F2FS_MOUNT_XATTR_USER 0x00000010
45#define F2FS_MOUNT_POSIX_ACL 0x00000020
46#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
444c580f 47#define F2FS_MOUNT_INLINE_XATTR 0x00000080
1001b347 48#define F2FS_MOUNT_INLINE_DATA 0x00000100
6b4afdd7 49#define F2FS_MOUNT_FLUSH_MERGE 0x00000200
0f7b2abd 50#define F2FS_MOUNT_NOBARRIER 0x00000400
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51
52#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
53#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
54#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
55
56#define ver_after(a, b) (typecheck(unsigned long long, a) && \
57 typecheck(unsigned long long, b) && \
58 ((long long)((a) - (b)) > 0))
59
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60typedef u32 block_t; /*
61 * should not change u32, since it is the on-disk block
62 * address format, __le32.
63 */
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64typedef u32 nid_t;
65
66struct f2fs_mount_info {
67 unsigned int opt;
68};
69
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70#define CRCPOLY_LE 0xedb88320
71
72static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 73{
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74 unsigned char *p = (unsigned char *)buf;
75 __u32 crc = F2FS_SUPER_MAGIC;
76 int i;
77
78 while (len--) {
79 crc ^= *p++;
80 for (i = 0; i < 8; i++)
81 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
82 }
83 return crc;
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84}
85
7e586fa0 86static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 87{
7e586fa0 88 return f2fs_crc32(buf, buf_size) == blk_crc;
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89}
90
91/*
92 * For checkpoint manager
93 */
94enum {
95 NAT_BITMAP,
96 SIT_BITMAP
97};
98
662befda 99/*
81c1a0f1 100 * For CP/NAT/SIT/SSA readahead
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101 */
102enum {
103 META_CP,
104 META_NAT,
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105 META_SIT,
106 META_SSA
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107};
108
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109/* for the list of ino */
110enum {
111 ORPHAN_INO, /* for orphan ino list */
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112 APPEND_INO, /* for append ino list */
113 UPDATE_INO, /* for update ino list */
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114 MAX_INO_ENTRY, /* max. list */
115};
116
117struct ino_entry {
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118 struct list_head list; /* list head */
119 nid_t ino; /* inode number */
120};
121
122/* for the list of directory inodes */
123struct dir_inode_entry {
124 struct list_head list; /* list head */
125 struct inode *inode; /* vfs inode pointer */
126};
127
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128/* for the list of blockaddresses to be discarded */
129struct discard_entry {
130 struct list_head list; /* list head */
131 block_t blkaddr; /* block address to be discarded */
132 int len; /* # of consecutive blocks of the discard */
133};
134
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135/* for the list of fsync inodes, used only during recovery */
136struct fsync_inode_entry {
137 struct list_head list; /* list head */
138 struct inode *inode; /* vfs inode pointer */
139 block_t blkaddr; /* block address locating the last inode */
140};
141
142#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
143#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
144
145#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
146#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
147#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
148#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
149
150static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
151{
152 int before = nats_in_cursum(rs);
153 rs->n_nats = cpu_to_le16(before + i);
154 return before;
155}
156
157static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
158{
159 int before = sits_in_cursum(rs);
160 rs->n_sits = cpu_to_le16(before + i);
161 return before;
162}
163
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164static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
165 int type)
166{
167 if (type == NAT_JOURNAL)
168 return nats_in_cursum(sum) + size <= NAT_JOURNAL_ENTRIES;
169
170 return sits_in_cursum(sum) + size <= SIT_JOURNAL_ENTRIES;
171}
172
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173/*
174 * ioctl commands
175 */
176#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
177#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
178
179#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
180/*
181 * ioctl commands in 32 bit emulation
182 */
183#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
184#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
185#endif
186
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187/*
188 * For INODE and NODE manager
189 */
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190/*
191 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
192 * as its node offset to distinguish from index node blocks.
193 * But some bits are used to mark the node block.
194 */
195#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
196 >> OFFSET_BIT_SHIFT)
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197enum {
198 ALLOC_NODE, /* allocate a new node page if needed */
199 LOOKUP_NODE, /* look up a node without readahead */
200 LOOKUP_NODE_RA, /*
201 * look up a node with readahead called
4f4124d0 202 * by get_data_block.
39a53e0c 203 */
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204};
205
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206#define F2FS_LINK_MAX 32000 /* maximum link count per file */
207
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208#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
209
39a53e0c 210/* for in-memory extent cache entry */
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211#define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
212
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213struct extent_info {
214 rwlock_t ext_lock; /* rwlock for consistency */
215 unsigned int fofs; /* start offset in a file */
216 u32 blk_addr; /* start block address of the extent */
111d2495 217 unsigned int len; /* length of the extent */
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218};
219
220/*
221 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
222 */
223#define FADVISE_COLD_BIT 0x01
354a3399 224#define FADVISE_LOST_PINO_BIT 0x02
39a53e0c 225
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226#define DEF_DIR_LEVEL 0
227
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228struct f2fs_inode_info {
229 struct inode vfs_inode; /* serve a vfs inode */
230 unsigned long i_flags; /* keep an inode flags for ioctl */
231 unsigned char i_advise; /* use to give file attribute hints */
38431545 232 unsigned char i_dir_level; /* use for dentry level for large dir */
39a53e0c 233 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 234 unsigned int i_pino; /* parent inode number */
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235 umode_t i_acl_mode; /* keep file acl mode temporarily */
236
237 /* Use below internally in f2fs*/
238 unsigned long flags; /* use to pass per-file flags */
d928bfbf 239 struct rw_semaphore i_sem; /* protect fi info */
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240 atomic_t dirty_dents; /* # of dirty dentry pages */
241 f2fs_hash_t chash; /* hash value of given file name */
242 unsigned int clevel; /* maximum level of given file name */
243 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 244 unsigned long long xattr_ver; /* cp version of xattr modification */
39a53e0c 245 struct extent_info ext; /* in-memory extent cache entry */
ed57c27f 246 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
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247};
248
249static inline void get_extent_info(struct extent_info *ext,
250 struct f2fs_extent i_ext)
251{
252 write_lock(&ext->ext_lock);
253 ext->fofs = le32_to_cpu(i_ext.fofs);
254 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
255 ext->len = le32_to_cpu(i_ext.len);
256 write_unlock(&ext->ext_lock);
257}
258
259static inline void set_raw_extent(struct extent_info *ext,
260 struct f2fs_extent *i_ext)
261{
262 read_lock(&ext->ext_lock);
263 i_ext->fofs = cpu_to_le32(ext->fofs);
264 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
265 i_ext->len = cpu_to_le32(ext->len);
266 read_unlock(&ext->ext_lock);
267}
268
269struct f2fs_nm_info {
270 block_t nat_blkaddr; /* base disk address of NAT */
271 nid_t max_nid; /* maximum possible node ids */
7ee0eeab 272 nid_t available_nids; /* maximum available node ids */
39a53e0c 273 nid_t next_scan_nid; /* the next nid to be scanned */
cdfc41c1 274 unsigned int ram_thresh; /* control the memory footprint */
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275
276 /* NAT cache management */
277 struct radix_tree_root nat_root;/* root of the nat entry cache */
278 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
279 unsigned int nat_cnt; /* the # of cached nat entries */
280 struct list_head nat_entries; /* cached nat entry list (clean) */
281 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
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282 struct list_head nat_entry_set; /* nat entry set list */
283 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
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284
285 /* free node ids management */
8a7ed66a 286 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
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287 struct list_head free_nid_list; /* a list for free nids */
288 spinlock_t free_nid_list_lock; /* protect free nid list */
289 unsigned int fcnt; /* the number of free node id */
290 struct mutex build_lock; /* lock for build free nids */
291
292 /* for checkpoint */
293 char *nat_bitmap; /* NAT bitmap pointer */
294 int bitmap_size; /* bitmap size */
295};
296
297/*
298 * this structure is used as one of function parameters.
299 * all the information are dedicated to a given direct node block determined
300 * by the data offset in a file.
301 */
302struct dnode_of_data {
303 struct inode *inode; /* vfs inode pointer */
304 struct page *inode_page; /* its inode page, NULL is possible */
305 struct page *node_page; /* cached direct node page */
306 nid_t nid; /* node id of the direct node block */
307 unsigned int ofs_in_node; /* data offset in the node page */
308 bool inode_page_locked; /* inode page is locked or not */
309 block_t data_blkaddr; /* block address of the node block */
310};
311
312static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
313 struct page *ipage, struct page *npage, nid_t nid)
314{
d66d1f76 315 memset(dn, 0, sizeof(*dn));
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316 dn->inode = inode;
317 dn->inode_page = ipage;
318 dn->node_page = npage;
319 dn->nid = nid;
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320}
321
322/*
323 * For SIT manager
324 *
325 * By default, there are 6 active log areas across the whole main area.
326 * When considering hot and cold data separation to reduce cleaning overhead,
327 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
328 * respectively.
329 * In the current design, you should not change the numbers intentionally.
330 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
331 * logs individually according to the underlying devices. (default: 6)
332 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
333 * data and 8 for node logs.
334 */
335#define NR_CURSEG_DATA_TYPE (3)
336#define NR_CURSEG_NODE_TYPE (3)
337#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
338
339enum {
340 CURSEG_HOT_DATA = 0, /* directory entry blocks */
341 CURSEG_WARM_DATA, /* data blocks */
342 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
343 CURSEG_HOT_NODE, /* direct node blocks of directory files */
344 CURSEG_WARM_NODE, /* direct node blocks of normal files */
345 CURSEG_COLD_NODE, /* indirect node blocks */
346 NO_CHECK_TYPE
347};
348
6b4afdd7 349struct flush_cmd {
6b4afdd7 350 struct completion wait;
721bd4d5 351 struct llist_node llnode;
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352 int ret;
353};
354
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355struct flush_cmd_control {
356 struct task_struct *f2fs_issue_flush; /* flush thread */
357 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
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358 struct llist_head issue_list; /* list for command issue */
359 struct llist_node *dispatch_list; /* list for command dispatch */
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360};
361
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362struct f2fs_sm_info {
363 struct sit_info *sit_info; /* whole segment information */
364 struct free_segmap_info *free_info; /* free segment information */
365 struct dirty_seglist_info *dirty_info; /* dirty segment information */
366 struct curseg_info *curseg_array; /* active segment information */
367
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368 block_t seg0_blkaddr; /* block address of 0'th segment */
369 block_t main_blkaddr; /* start block address of main area */
370 block_t ssa_blkaddr; /* start block address of SSA area */
371
372 unsigned int segment_count; /* total # of segments */
373 unsigned int main_segments; /* # of segments in main area */
374 unsigned int reserved_segments; /* # of reserved segments */
375 unsigned int ovp_segments; /* # of overprovision segments */
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376
377 /* a threshold to reclaim prefree segments */
378 unsigned int rec_prefree_segments;
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379
380 /* for small discard management */
381 struct list_head discard_list; /* 4KB discard list */
382 int nr_discards; /* # of discards in the list */
383 int max_discards; /* max. discards to be issued */
216fbd64 384
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385 struct list_head sit_entry_set; /* sit entry set list */
386
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387 unsigned int ipu_policy; /* in-place-update policy */
388 unsigned int min_ipu_util; /* in-place-update threshold */
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389
390 /* for flush command control */
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391 struct flush_cmd_control *cmd_control_info;
392
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393};
394
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395/*
396 * For superblock
397 */
398/*
399 * COUNT_TYPE for monitoring
400 *
401 * f2fs monitors the number of several block types such as on-writeback,
402 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
403 */
404enum count_type {
405 F2FS_WRITEBACK,
406 F2FS_DIRTY_DENTS,
407 F2FS_DIRTY_NODES,
408 F2FS_DIRTY_META,
409 NR_COUNT_TYPE,
410};
411
39a53e0c 412/*
e1c42045 413 * The below are the page types of bios used in submit_bio().
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414 * The available types are:
415 * DATA User data pages. It operates as async mode.
416 * NODE Node pages. It operates as async mode.
417 * META FS metadata pages such as SIT, NAT, CP.
418 * NR_PAGE_TYPE The number of page types.
419 * META_FLUSH Make sure the previous pages are written
420 * with waiting the bio's completion
421 * ... Only can be used with META.
422 */
7d5e5109 423#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
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424enum page_type {
425 DATA,
426 NODE,
427 META,
428 NR_PAGE_TYPE,
429 META_FLUSH,
430};
431
458e6197 432struct f2fs_io_info {
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433 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
434 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
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435};
436
93dfe2ac 437#define is_read_io(rw) (((rw) & 1) == READ)
1ff7bd3b 438struct f2fs_bio_info {
458e6197 439 struct f2fs_sb_info *sbi; /* f2fs superblock */
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440 struct bio *bio; /* bios to merge */
441 sector_t last_block_in_bio; /* last block number */
458e6197 442 struct f2fs_io_info fio; /* store buffered io info. */
df0f8dc0 443 struct rw_semaphore io_rwsem; /* blocking op for bio */
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444};
445
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446struct f2fs_sb_info {
447 struct super_block *sb; /* pointer to VFS super block */
5e176d54 448 struct proc_dir_entry *s_proc; /* proc entry */
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449 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
450 struct f2fs_super_block *raw_super; /* raw super block pointer */
451 int s_dirty; /* dirty flag for checkpoint */
2ae4c673 452 bool need_fsck; /* need fsck.f2fs to fix */
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453
454 /* for node-related operations */
455 struct f2fs_nm_info *nm_info; /* node manager */
456 struct inode *node_inode; /* cache node blocks */
457
458 /* for segment-related operations */
459 struct f2fs_sm_info *sm_info; /* segment manager */
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460
461 /* for bio operations */
924b720b 462 struct f2fs_bio_info read_io; /* for read bios */
1ff7bd3b 463 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
1b1f559f 464 struct completion *wait_io; /* for completion bios */
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465
466 /* for checkpoint */
467 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
468 struct inode *meta_inode; /* cache meta blocks */
39936837 469 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 470 struct rw_semaphore cp_rwsem; /* blocking FS operations */
b3582c68 471 struct rw_semaphore node_write; /* locking node writes */
39a53e0c 472 struct mutex writepages; /* mutex for writepages() */
aabe5136 473 bool por_doing; /* recovery is doing or not */
fb51b5ef 474 wait_queue_head_t cp_wait;
39a53e0c 475
6451e041 476 /* for inode management */
39efac41 477 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
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478 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
479 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
480
481 /* for orphan inode, use 0'th array */
39a53e0c 482 unsigned int n_orphans; /* # of orphan inodes */
0d47c1ad 483 unsigned int max_orphans; /* max orphan inodes */
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484
485 /* for directory inode management */
486 struct list_head dir_inode_list; /* dir inode list */
487 spinlock_t dir_inode_lock; /* for dir inode list lock */
39a53e0c 488
e1c42045 489 /* basic filesystem units */
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490 unsigned int log_sectors_per_block; /* log2 sectors per block */
491 unsigned int log_blocksize; /* log2 block size */
492 unsigned int blocksize; /* block size */
493 unsigned int root_ino_num; /* root inode number*/
494 unsigned int node_ino_num; /* node inode number*/
495 unsigned int meta_ino_num; /* meta inode number*/
496 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
497 unsigned int blocks_per_seg; /* blocks per segment */
498 unsigned int segs_per_sec; /* segments per section */
499 unsigned int secs_per_zone; /* sections per zone */
500 unsigned int total_sections; /* total section count */
501 unsigned int total_node_count; /* total node block count */
502 unsigned int total_valid_node_count; /* valid node block count */
503 unsigned int total_valid_inode_count; /* valid inode count */
504 int active_logs; /* # of active logs */
ab9fa662 505 int dir_level; /* directory level */
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506
507 block_t user_block_count; /* # of user blocks */
508 block_t total_valid_block_count; /* # of valid blocks */
509 block_t alloc_valid_block_count; /* # of allocated blocks */
510 block_t last_valid_block_count; /* for recovery */
511 u32 s_next_generation; /* for NFS support */
512 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
513
514 struct f2fs_mount_info mount_opt; /* mount options */
515
516 /* for cleaning operations */
517 struct mutex gc_mutex; /* mutex for GC */
518 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 519 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c 520
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521 /* maximum # of trials to find a victim segment for SSR and GC */
522 unsigned int max_victim_search;
523
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524 /*
525 * for stat information.
526 * one is for the LFS mode, and the other is for the SSR mode.
527 */
35b09d82 528#ifdef CONFIG_F2FS_STAT_FS
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529 struct f2fs_stat_info *stat_info; /* FS status information */
530 unsigned int segment_count[2]; /* # of allocated segments */
531 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c 532 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
0dbdc2ae 533 int inline_inode; /* # of inline_data inodes */
39a53e0c 534 int bg_gc; /* background gc calls */
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535 unsigned int n_dirty_dirs; /* # of dir inodes */
536#endif
537 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 538 spinlock_t stat_lock; /* lock for stat operations */
b59d0bae
NJ
539
540 /* For sysfs suppport */
541 struct kobject s_kobj;
542 struct completion s_kobj_unregister;
39a53e0c
JK
543};
544
545/*
546 * Inline functions
547 */
548static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
549{
550 return container_of(inode, struct f2fs_inode_info, vfs_inode);
551}
552
553static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
554{
555 return sb->s_fs_info;
556}
557
4081363f
JK
558static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
559{
560 return F2FS_SB(inode->i_sb);
561}
562
563static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
564{
565 return F2FS_I_SB(mapping->host);
566}
567
568static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
569{
570 return F2FS_M_SB(page->mapping);
571}
572
39a53e0c
JK
573static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
574{
575 return (struct f2fs_super_block *)(sbi->raw_super);
576}
577
578static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
579{
580 return (struct f2fs_checkpoint *)(sbi->ckpt);
581}
582
45590710
GZ
583static inline struct f2fs_node *F2FS_NODE(struct page *page)
584{
585 return (struct f2fs_node *)page_address(page);
586}
587
58bfaf44
JK
588static inline struct f2fs_inode *F2FS_INODE(struct page *page)
589{
590 return &((struct f2fs_node *)page_address(page))->i;
591}
592
39a53e0c
JK
593static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
594{
595 return (struct f2fs_nm_info *)(sbi->nm_info);
596}
597
598static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
599{
600 return (struct f2fs_sm_info *)(sbi->sm_info);
601}
602
603static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
604{
605 return (struct sit_info *)(SM_I(sbi)->sit_info);
606}
607
608static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
609{
610 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
611}
612
613static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
614{
615 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
616}
617
9df27d98
GZ
618static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
619{
620 return sbi->meta_inode->i_mapping;
621}
622
4ef51a8f
JK
623static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
624{
625 return sbi->node_inode->i_mapping;
626}
627
39a53e0c
JK
628static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
629{
630 sbi->s_dirty = 1;
631}
632
633static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
634{
635 sbi->s_dirty = 0;
636}
637
d71b5564
JK
638static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
639{
640 return le64_to_cpu(cp->checkpoint_ver);
641}
642
25ca923b
JK
643static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
644{
645 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
646 return ckpt_flags & f;
647}
648
649static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
650{
651 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
652 ckpt_flags |= f;
653 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
654}
655
656static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
657{
658 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
659 ckpt_flags &= (~f);
660 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
661}
662
e479556b 663static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 664{
e479556b 665 down_read(&sbi->cp_rwsem);
39936837
JK
666}
667
e479556b 668static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 669{
e479556b 670 up_read(&sbi->cp_rwsem);
39a53e0c
JK
671}
672
e479556b 673static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 674{
0daaad97 675 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK
676}
677
e479556b 678static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 679{
e479556b 680 up_write(&sbi->cp_rwsem);
39a53e0c
JK
681}
682
683/*
684 * Check whether the given nid is within node id range.
685 */
064e0823 686static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 687{
d6b7d4b3
CY
688 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
689 return -EINVAL;
cfb271d4 690 if (unlikely(nid >= NM_I(sbi)->max_nid))
064e0823
NJ
691 return -EINVAL;
692 return 0;
39a53e0c
JK
693}
694
695#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
696
697/*
698 * Check whether the inode has blocks or not
699 */
700static inline int F2FS_HAS_BLOCKS(struct inode *inode)
701{
702 if (F2FS_I(inode)->i_xattr_nid)
6c311ec6 703 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
39a53e0c 704 else
6c311ec6 705 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
39a53e0c
JK
706}
707
4bc8e9bc
CY
708static inline bool f2fs_has_xattr_block(unsigned int ofs)
709{
710 return ofs == XATTR_NODE_OFFSET;
711}
712
39a53e0c
JK
713static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
714 struct inode *inode, blkcnt_t count)
715{
716 block_t valid_block_count;
717
718 spin_lock(&sbi->stat_lock);
719 valid_block_count =
720 sbi->total_valid_block_count + (block_t)count;
cfb271d4 721 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
722 spin_unlock(&sbi->stat_lock);
723 return false;
724 }
725 inode->i_blocks += count;
726 sbi->total_valid_block_count = valid_block_count;
727 sbi->alloc_valid_block_count += (block_t)count;
728 spin_unlock(&sbi->stat_lock);
729 return true;
730}
731
da19b0dc 732static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
39a53e0c
JK
733 struct inode *inode,
734 blkcnt_t count)
735{
736 spin_lock(&sbi->stat_lock);
9850cf4a
JK
737 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
738 f2fs_bug_on(sbi, inode->i_blocks < count);
39a53e0c
JK
739 inode->i_blocks -= count;
740 sbi->total_valid_block_count -= (block_t)count;
741 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
742}
743
744static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
745{
746 atomic_inc(&sbi->nr_pages[count_type]);
747 F2FS_SET_SB_DIRT(sbi);
748}
749
750static inline void inode_inc_dirty_dents(struct inode *inode)
751{
4081363f 752 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
39a53e0c
JK
753 atomic_inc(&F2FS_I(inode)->dirty_dents);
754}
755
756static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
757{
758 atomic_dec(&sbi->nr_pages[count_type]);
759}
760
761static inline void inode_dec_dirty_dents(struct inode *inode)
762{
1fe54f9d
JK
763 if (!S_ISDIR(inode->i_mode))
764 return;
765
4081363f 766 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
39a53e0c
JK
767 atomic_dec(&F2FS_I(inode)->dirty_dents);
768}
769
770static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
771{
772 return atomic_read(&sbi->nr_pages[count_type]);
773}
774
f8b2c1f9
JK
775static inline int get_dirty_dents(struct inode *inode)
776{
777 return atomic_read(&F2FS_I(inode)->dirty_dents);
778}
779
5ac206cf
NJ
780static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
781{
782 unsigned int pages_per_sec = sbi->segs_per_sec *
783 (1 << sbi->log_blocks_per_seg);
784 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
785 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
786}
787
39a53e0c
JK
788static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
789{
8b8343fa 790 return sbi->total_valid_block_count;
39a53e0c
JK
791}
792
793static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
794{
795 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
796
797 /* return NAT or SIT bitmap */
798 if (flag == NAT_BITMAP)
799 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
800 else if (flag == SIT_BITMAP)
801 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
802
803 return 0;
804}
805
806static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
807{
808 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1dbe4152
CL
809 int offset;
810
811 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
812 if (flag == NAT_BITMAP)
813 return &ckpt->sit_nat_version_bitmap;
814 else
65b85ccc 815 return (unsigned char *)ckpt + F2FS_BLKSIZE;
1dbe4152
CL
816 } else {
817 offset = (flag == NAT_BITMAP) ?
25ca923b 818 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1dbe4152
CL
819 return &ckpt->sit_nat_version_bitmap + offset;
820 }
39a53e0c
JK
821}
822
823static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
824{
825 block_t start_addr;
826 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 827 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 828
25ca923b 829 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK
830
831 /*
832 * odd numbered checkpoint should at cp segment 0
e1c42045 833 * and even segment must be at cp segment 1
39a53e0c
JK
834 */
835 if (!(ckpt_version & 1))
836 start_addr += sbi->blocks_per_seg;
837
838 return start_addr;
839}
840
841static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
842{
843 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
844}
845
846static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 847 struct inode *inode)
39a53e0c
JK
848{
849 block_t valid_block_count;
850 unsigned int valid_node_count;
851
852 spin_lock(&sbi->stat_lock);
853
ef86d709 854 valid_block_count = sbi->total_valid_block_count + 1;
cfb271d4 855 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
856 spin_unlock(&sbi->stat_lock);
857 return false;
858 }
859
ef86d709 860 valid_node_count = sbi->total_valid_node_count + 1;
cfb271d4 861 if (unlikely(valid_node_count > sbi->total_node_count)) {
39a53e0c
JK
862 spin_unlock(&sbi->stat_lock);
863 return false;
864 }
865
866 if (inode)
ef86d709
GZ
867 inode->i_blocks++;
868
869 sbi->alloc_valid_block_count++;
870 sbi->total_valid_node_count++;
871 sbi->total_valid_block_count++;
39a53e0c
JK
872 spin_unlock(&sbi->stat_lock);
873
874 return true;
875}
876
877static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 878 struct inode *inode)
39a53e0c
JK
879{
880 spin_lock(&sbi->stat_lock);
881
9850cf4a
JK
882 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
883 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
884 f2fs_bug_on(sbi, !inode->i_blocks);
39a53e0c 885
ef86d709
GZ
886 inode->i_blocks--;
887 sbi->total_valid_node_count--;
888 sbi->total_valid_block_count--;
39a53e0c
JK
889
890 spin_unlock(&sbi->stat_lock);
891}
892
893static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
894{
8b8343fa 895 return sbi->total_valid_node_count;
39a53e0c
JK
896}
897
898static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
899{
900 spin_lock(&sbi->stat_lock);
9850cf4a 901 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK
902 sbi->total_valid_inode_count++;
903 spin_unlock(&sbi->stat_lock);
904}
905
0e80220a 906static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
39a53e0c
JK
907{
908 spin_lock(&sbi->stat_lock);
9850cf4a 909 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
39a53e0c
JK
910 sbi->total_valid_inode_count--;
911 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
912}
913
914static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
915{
8b8343fa 916 return sbi->total_valid_inode_count;
39a53e0c
JK
917}
918
919static inline void f2fs_put_page(struct page *page, int unlock)
920{
031fa8cc 921 if (!page)
39a53e0c
JK
922 return;
923
924 if (unlock) {
9850cf4a 925 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
39a53e0c
JK
926 unlock_page(page);
927 }
928 page_cache_release(page);
929}
930
931static inline void f2fs_put_dnode(struct dnode_of_data *dn)
932{
933 if (dn->node_page)
934 f2fs_put_page(dn->node_page, 1);
935 if (dn->inode_page && dn->node_page != dn->inode_page)
936 f2fs_put_page(dn->inode_page, 0);
937 dn->node_page = NULL;
938 dn->inode_page = NULL;
939}
940
941static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
e8512d2e 942 size_t size)
39a53e0c 943{
e8512d2e 944 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
39a53e0c
JK
945}
946
7bd59381
GZ
947static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
948 gfp_t flags)
949{
950 void *entry;
951retry:
952 entry = kmem_cache_alloc(cachep, flags);
953 if (!entry) {
954 cond_resched();
955 goto retry;
956 }
957
958 return entry;
959}
960
39a53e0c
JK
961#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
962
963static inline bool IS_INODE(struct page *page)
964{
45590710 965 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK
966 return RAW_IS_INODE(p);
967}
968
969static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
970{
971 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
972}
973
974static inline block_t datablock_addr(struct page *node_page,
975 unsigned int offset)
976{
977 struct f2fs_node *raw_node;
978 __le32 *addr_array;
45590710 979 raw_node = F2FS_NODE(node_page);
39a53e0c
JK
980 addr_array = blkaddr_in_node(raw_node);
981 return le32_to_cpu(addr_array[offset]);
982}
983
984static inline int f2fs_test_bit(unsigned int nr, char *addr)
985{
986 int mask;
987
988 addr += (nr >> 3);
989 mask = 1 << (7 - (nr & 0x07));
990 return mask & *addr;
991}
992
993static inline int f2fs_set_bit(unsigned int nr, char *addr)
994{
995 int mask;
996 int ret;
997
998 addr += (nr >> 3);
999 mask = 1 << (7 - (nr & 0x07));
1000 ret = mask & *addr;
1001 *addr |= mask;
1002 return ret;
1003}
1004
1005static inline int f2fs_clear_bit(unsigned int nr, char *addr)
1006{
1007 int mask;
1008 int ret;
1009
1010 addr += (nr >> 3);
1011 mask = 1 << (7 - (nr & 0x07));
1012 ret = mask & *addr;
1013 *addr &= ~mask;
1014 return ret;
1015}
1016
1017/* used for f2fs_inode_info->flags */
1018enum {
1019 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 1020 FI_DIRTY_INODE, /* indicate inode is dirty or not */
ed57c27f 1021 FI_DIRTY_DIR, /* indicate directory has dirty pages */
39a53e0c
JK
1022 FI_INC_LINK, /* need to increment i_nlink */
1023 FI_ACL_MODE, /* indicate acl mode */
1024 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 1025 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 1026 FI_DELAY_IPUT, /* used for the recovery */
c11abd1a 1027 FI_NO_EXTENT, /* not to use the extent cache */
444c580f 1028 FI_INLINE_XATTR, /* used for inline xattr */
1001b347 1029 FI_INLINE_DATA, /* used for inline data*/
fff04f90
JK
1030 FI_APPEND_WRITE, /* inode has appended data */
1031 FI_UPDATE_WRITE, /* inode has in-place-update data */
ea1aa12c 1032 FI_NEED_IPU, /* used fo ipu for fdatasync */
39a53e0c
JK
1033};
1034
1035static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1036{
61e0f2d0
JK
1037 if (!test_bit(flag, &fi->flags))
1038 set_bit(flag, &fi->flags);
39a53e0c
JK
1039}
1040
1041static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1042{
1043 return test_bit(flag, &fi->flags);
1044}
1045
1046static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1047{
61e0f2d0
JK
1048 if (test_bit(flag, &fi->flags))
1049 clear_bit(flag, &fi->flags);
39a53e0c
JK
1050}
1051
1052static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1053{
1054 fi->i_acl_mode = mode;
1055 set_inode_flag(fi, FI_ACL_MODE);
1056}
1057
1058static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1059{
1060 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1061 clear_inode_flag(fi, FI_ACL_MODE);
1062 return 1;
1063 }
1064 return 0;
1065}
1066
444c580f
JK
1067static inline void get_inline_info(struct f2fs_inode_info *fi,
1068 struct f2fs_inode *ri)
1069{
1070 if (ri->i_inline & F2FS_INLINE_XATTR)
1071 set_inode_flag(fi, FI_INLINE_XATTR);
1001b347
HL
1072 if (ri->i_inline & F2FS_INLINE_DATA)
1073 set_inode_flag(fi, FI_INLINE_DATA);
444c580f
JK
1074}
1075
1076static inline void set_raw_inline(struct f2fs_inode_info *fi,
1077 struct f2fs_inode *ri)
1078{
1079 ri->i_inline = 0;
1080
1081 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1082 ri->i_inline |= F2FS_INLINE_XATTR;
1001b347
HL
1083 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1084 ri->i_inline |= F2FS_INLINE_DATA;
444c580f
JK
1085}
1086
987c7c31
CY
1087static inline int f2fs_has_inline_xattr(struct inode *inode)
1088{
1089 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1090}
1091
de93653f
JK
1092static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1093{
987c7c31 1094 if (f2fs_has_inline_xattr(&fi->vfs_inode))
de93653f
JK
1095 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1096 return DEF_ADDRS_PER_INODE;
1097}
1098
65985d93
JK
1099static inline void *inline_xattr_addr(struct page *page)
1100{
695fd1ed 1101 struct f2fs_inode *ri = F2FS_INODE(page);
65985d93
JK
1102 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1103 F2FS_INLINE_XATTR_ADDRS]);
1104}
1105
1106static inline int inline_xattr_size(struct inode *inode)
1107{
987c7c31 1108 if (f2fs_has_inline_xattr(inode))
65985d93
JK
1109 return F2FS_INLINE_XATTR_ADDRS << 2;
1110 else
1111 return 0;
1112}
1113
0dbdc2ae
JK
1114static inline int f2fs_has_inline_data(struct inode *inode)
1115{
1116 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1117}
1118
1001b347
HL
1119static inline void *inline_data_addr(struct page *page)
1120{
695fd1ed 1121 struct f2fs_inode *ri = F2FS_INODE(page);
1001b347
HL
1122 return (void *)&(ri->i_addr[1]);
1123}
1124
77888c1e
JK
1125static inline int f2fs_readonly(struct super_block *sb)
1126{
1127 return sb->s_flags & MS_RDONLY;
1128}
1129
1e968fdf
JK
1130static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1131{
1132 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1133}
1134
744602cf
JK
1135static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1136{
1137 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1138 sbi->sb->s_flags |= MS_RDONLY;
1139}
1140
a6dda0e6
CH
1141#define get_inode_mode(i) \
1142 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1143 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1144
267378d4
CY
1145/* get offset of first page in next direct node */
1146#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1147 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1148 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1149 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1150
39a53e0c
JK
1151/*
1152 * file.c
1153 */
1154int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1155void truncate_data_blocks(struct dnode_of_data *);
764aa3e9 1156int truncate_blocks(struct inode *, u64, bool);
39a53e0c 1157void f2fs_truncate(struct inode *);
2d4d9fb5 1158int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK
1159int f2fs_setattr(struct dentry *, struct iattr *);
1160int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 1161int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 1162long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 1163long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK
1164
1165/*
1166 * inode.c
1167 */
1168void f2fs_set_inode_flags(struct inode *);
39a53e0c 1169struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 1170int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 1171void update_inode(struct inode *, struct page *);
744602cf 1172void update_inode_page(struct inode *);
39a53e0c
JK
1173int f2fs_write_inode(struct inode *, struct writeback_control *);
1174void f2fs_evict_inode(struct inode *);
1175
1176/*
1177 * namei.c
1178 */
1179struct dentry *f2fs_get_parent(struct dentry *child);
1180
1181/*
1182 * dir.c
1183 */
1184struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1185 struct page **);
1186struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1187ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1188void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1189 struct page *, struct inode *);
1cd14caf 1190int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 1191int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c 1192void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
b97a9b5d 1193int f2fs_do_tmpfile(struct inode *, struct inode *);
39a53e0c
JK
1194int f2fs_make_empty(struct inode *, struct inode *);
1195bool f2fs_empty_dir(struct inode *);
1196
b7f7a5e0
AV
1197static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1198{
1199 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1200 inode);
1201}
1202
39a53e0c
JK
1203/*
1204 * super.c
1205 */
1206int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ
1207extern __printf(3, 4)
1208void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK
1209
1210/*
1211 * hash.c
1212 */
eee6160f 1213f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
39a53e0c
JK
1214
1215/*
1216 * node.c
1217 */
1218struct dnode_of_data;
1219struct node_info;
1220
6fb03f3a 1221bool available_free_memory(struct f2fs_sb_info *, int);
39a53e0c 1222int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
479f40c4 1223bool fsync_mark_done(struct f2fs_sb_info *, nid_t);
b6fe5873 1224void fsync_mark_clear(struct f2fs_sb_info *, nid_t);
39a53e0c
JK
1225void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1226int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1227int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1228int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1229int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
58e674d6 1230void remove_inode_page(struct inode *);
a014e037 1231struct page *new_inode_page(struct inode *);
8ae8f162 1232struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK
1233void ra_node_page(struct f2fs_sb_info *, nid_t);
1234struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1235struct page *get_node_page_ra(struct page *, int);
1236void sync_inode_page(struct dnode_of_data *);
1237int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1238bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1239void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1240void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
70cfed88 1241void recover_inline_xattr(struct inode *, struct page *);
1c35a90e 1242void recover_xattr_data(struct inode *, struct page *, block_t);
39a53e0c
JK
1243int recover_inode_page(struct f2fs_sb_info *, struct page *);
1244int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1245 struct f2fs_summary_block *);
1246void flush_nat_entries(struct f2fs_sb_info *);
1247int build_node_manager(struct f2fs_sb_info *);
1248void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1249int __init create_node_manager_caches(void);
39a53e0c
JK
1250void destroy_node_manager_caches(void);
1251
1252/*
1253 * segment.c
1254 */
1255void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1256void f2fs_balance_fs_bg(struct f2fs_sb_info *);
6b4afdd7 1257int f2fs_issue_flush(struct f2fs_sb_info *);
2163d198
GZ
1258int create_flush_cmd_control(struct f2fs_sb_info *);
1259void destroy_flush_cmd_control(struct f2fs_sb_info *);
39a53e0c 1260void invalidate_blocks(struct f2fs_sb_info *, block_t);
5e443818 1261void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
39a53e0c 1262void clear_prefree_segments(struct f2fs_sb_info *);
cf2271e7 1263void discard_next_dnode(struct f2fs_sb_info *, block_t);
39a53e0c
JK
1264int npages_for_summary_flush(struct f2fs_sb_info *);
1265void allocate_new_segments(struct f2fs_sb_info *);
1266struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
577e3495 1267void write_meta_page(struct f2fs_sb_info *, struct page *);
fb5566da
JK
1268void write_node_page(struct f2fs_sb_info *, struct page *,
1269 struct f2fs_io_info *, unsigned int, block_t, block_t *);
458e6197
JK
1270void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1271 struct f2fs_io_info *);
1272void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
39a53e0c
JK
1273void recover_data_page(struct f2fs_sb_info *, struct page *,
1274 struct f2fs_summary *, block_t, block_t);
bfad7c2d
JK
1275void allocate_data_block(struct f2fs_sb_info *, struct page *,
1276 block_t, block_t *, struct f2fs_summary *, int);
5514f0aa 1277void f2fs_wait_on_page_writeback(struct page *, enum page_type);
39a53e0c
JK
1278void write_data_summaries(struct f2fs_sb_info *, block_t);
1279void write_node_summaries(struct f2fs_sb_info *, block_t);
1280int lookup_journal_in_cursum(struct f2fs_summary_block *,
1281 int, unsigned int, int);
1282void flush_sit_entries(struct f2fs_sb_info *);
1283int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1284void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK
1285int __init create_segment_manager_caches(void);
1286void destroy_segment_manager_caches(void);
39a53e0c
JK
1287
1288/*
1289 * checkpoint.c
1290 */
1291struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1292struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
662befda 1293int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
39a53e0c 1294long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
fff04f90
JK
1295void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1296void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
6f12ac25 1297void release_dirty_inode(struct f2fs_sb_info *);
fff04f90 1298bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
cbd56e7d
JK
1299int acquire_orphan_inode(struct f2fs_sb_info *);
1300void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK
1301void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1302void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
8f99a946 1303void recover_orphan_inodes(struct f2fs_sb_info *);
39a53e0c
JK
1304int get_valid_checkpoint(struct f2fs_sb_info *);
1305void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1306void add_dirty_dir_inode(struct inode *);
39a53e0c
JK
1307void remove_dirty_dir_inode(struct inode *);
1308void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1309void write_checkpoint(struct f2fs_sb_info *, bool);
6451e041 1310void init_ino_entry_info(struct f2fs_sb_info *);
6e6093a8 1311int __init create_checkpoint_caches(void);
39a53e0c
JK
1312void destroy_checkpoint_caches(void);
1313
1314/*
1315 * data.c
1316 */
458e6197 1317void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
93dfe2ac
JK
1318int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1319void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
458e6197 1320 struct f2fs_io_info *);
39a53e0c 1321int reserve_new_block(struct dnode_of_data *);
b600965c 1322int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
39a53e0c 1323void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1324struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1325struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1326struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
458e6197 1327int do_write_data_page(struct page *, struct f2fs_io_info *);
9ab70134 1328int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
39a53e0c
JK
1329
1330/*
1331 * gc.c
1332 */
1333int start_gc_thread(struct f2fs_sb_info *);
1334void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1335block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1336int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1337void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1338int __init create_gc_caches(void);
39a53e0c
JK
1339void destroy_gc_caches(void);
1340
1341/*
1342 * recovery.c
1343 */
6ead1142 1344int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK
1345bool space_for_roll_forward(struct f2fs_sb_info *);
1346
1347/*
1348 * debug.c
1349 */
1350#ifdef CONFIG_F2FS_STAT_FS
1351struct f2fs_stat_info {
1352 struct list_head stat_list;
1353 struct f2fs_sb_info *sbi;
39a53e0c
JK
1354 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1355 int main_area_segs, main_area_sections, main_area_zones;
1356 int hit_ext, total_ext;
1357 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1358 int nats, sits, fnids;
1359 int total_count, utilization;
0dbdc2ae 1360 int bg_gc, inline_inode;
39a53e0c
JK
1361 unsigned int valid_count, valid_node_count, valid_inode_count;
1362 unsigned int bimodal, avg_vblocks;
1363 int util_free, util_valid, util_invalid;
1364 int rsvd_segs, overp_segs;
1365 int dirty_count, node_pages, meta_pages;
942e0be6 1366 int prefree_count, call_count, cp_count;
39a53e0c
JK
1367 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1368 int tot_blks, data_blks, node_blks;
1369 int curseg[NR_CURSEG_TYPE];
1370 int cursec[NR_CURSEG_TYPE];
1371 int curzone[NR_CURSEG_TYPE];
1372
1373 unsigned int segment_count[2];
1374 unsigned int block_count[2];
1375 unsigned base_mem, cache_mem;
1376};
1377
963d4f7d
GZ
1378static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1379{
6c311ec6 1380 return (struct f2fs_stat_info *)sbi->stat_info;
963d4f7d
GZ
1381}
1382
942e0be6 1383#define stat_inc_cp_count(si) ((si)->cp_count++)
dcdfff65
JK
1384#define stat_inc_call_count(si) ((si)->call_count++)
1385#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1386#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1387#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1388#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1389#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
0dbdc2ae
JK
1390#define stat_inc_inline_inode(inode) \
1391 do { \
1392 if (f2fs_has_inline_data(inode)) \
4081363f 1393 ((F2FS_I_SB(inode))->inline_inode++); \
0dbdc2ae
JK
1394 } while (0)
1395#define stat_dec_inline_inode(inode) \
1396 do { \
1397 if (f2fs_has_inline_data(inode)) \
4081363f 1398 ((F2FS_I_SB(inode))->inline_inode--); \
0dbdc2ae
JK
1399 } while (0)
1400
dcdfff65
JK
1401#define stat_inc_seg_type(sbi, curseg) \
1402 ((sbi)->segment_count[(curseg)->alloc_type]++)
1403#define stat_inc_block_count(sbi, curseg) \
1404 ((sbi)->block_count[(curseg)->alloc_type]++)
39a53e0c
JK
1405
1406#define stat_inc_seg_count(sbi, type) \
1407 do { \
963d4f7d 1408 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1409 (si)->tot_segs++; \
1410 if (type == SUM_TYPE_DATA) \
1411 si->data_segs++; \
1412 else \
1413 si->node_segs++; \
1414 } while (0)
1415
1416#define stat_inc_tot_blk_count(si, blks) \
1417 (si->tot_blks += (blks))
1418
1419#define stat_inc_data_blk_count(sbi, blks) \
1420 do { \
963d4f7d 1421 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1422 stat_inc_tot_blk_count(si, blks); \
1423 si->data_blks += (blks); \
1424 } while (0)
1425
1426#define stat_inc_node_blk_count(sbi, blks) \
1427 do { \
963d4f7d 1428 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1429 stat_inc_tot_blk_count(si, blks); \
1430 si->node_blks += (blks); \
1431 } while (0)
1432
1433int f2fs_build_stats(struct f2fs_sb_info *);
1434void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1435void __init f2fs_create_root_stats(void);
4589d25d 1436void f2fs_destroy_root_stats(void);
39a53e0c 1437#else
942e0be6 1438#define stat_inc_cp_count(si)
39a53e0c 1439#define stat_inc_call_count(si)
dcdfff65
JK
1440#define stat_inc_bggc_count(si)
1441#define stat_inc_dirty_dir(sbi)
1442#define stat_dec_dirty_dir(sbi)
1443#define stat_inc_total_hit(sb)
1444#define stat_inc_read_hit(sb)
0dbdc2ae
JK
1445#define stat_inc_inline_inode(inode)
1446#define stat_dec_inline_inode(inode)
dcdfff65
JK
1447#define stat_inc_seg_type(sbi, curseg)
1448#define stat_inc_block_count(sbi, curseg)
39a53e0c
JK
1449#define stat_inc_seg_count(si, type)
1450#define stat_inc_tot_blk_count(si, blks)
1451#define stat_inc_data_blk_count(si, blks)
1452#define stat_inc_node_blk_count(sbi, blks)
1453
1454static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1455static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1456static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1457static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK
1458#endif
1459
1460extern const struct file_operations f2fs_dir_operations;
1461extern const struct file_operations f2fs_file_operations;
1462extern const struct inode_operations f2fs_file_inode_operations;
1463extern const struct address_space_operations f2fs_dblock_aops;
1464extern const struct address_space_operations f2fs_node_aops;
1465extern const struct address_space_operations f2fs_meta_aops;
1466extern const struct inode_operations f2fs_dir_inode_operations;
1467extern const struct inode_operations f2fs_symlink_inode_operations;
1468extern const struct inode_operations f2fs_special_inode_operations;
1001b347 1469
e18c65b2
HL
1470/*
1471 * inline.c
1472 */
e18c65b2
HL
1473bool f2fs_may_inline(struct inode *);
1474int f2fs_read_inline_data(struct inode *, struct page *);
b067ba1f 1475int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *);
e18c65b2 1476int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
8aa6f1c5 1477void truncate_inline_data(struct inode *, u64);
0342fd30 1478bool recover_inline_data(struct inode *, struct page *);
39a53e0c 1479#endif