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f2fs: skip unnecessary data writes during fsync
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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
0f7b2abd 44#define F2FS_MOUNT_NOBARRIER 0x00000400
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45
46#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
47#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
48#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
49
50#define ver_after(a, b) (typecheck(unsigned long long, a) && \
51 typecheck(unsigned long long, b) && \
52 ((long long)((a) - (b)) > 0))
53
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54typedef u32 block_t; /*
55 * should not change u32, since it is the on-disk block
56 * address format, __le32.
57 */
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58typedef u32 nid_t;
59
60struct f2fs_mount_info {
61 unsigned int opt;
62};
63
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64#define CRCPOLY_LE 0xedb88320
65
66static inline __u32 f2fs_crc32(void *buf, size_t len)
39a53e0c 67{
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68 unsigned char *p = (unsigned char *)buf;
69 __u32 crc = F2FS_SUPER_MAGIC;
70 int i;
71
72 while (len--) {
73 crc ^= *p++;
74 for (i = 0; i < 8; i++)
75 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
76 }
77 return crc;
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78}
79
7e586fa0 80static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
39a53e0c 81{
7e586fa0 82 return f2fs_crc32(buf, buf_size) == blk_crc;
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83}
84
85/*
86 * For checkpoint manager
87 */
88enum {
89 NAT_BITMAP,
90 SIT_BITMAP
91};
92
662befda 93/*
81c1a0f1 94 * For CP/NAT/SIT/SSA readahead
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95 */
96enum {
97 META_CP,
98 META_NAT,
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99 META_SIT,
100 META_SSA
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101};
102
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103/* for the list of ino */
104enum {
105 ORPHAN_INO, /* for orphan ino list */
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106 APPEND_INO, /* for append ino list */
107 UPDATE_INO, /* for update ino list */
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108 MAX_INO_ENTRY, /* max. list */
109};
110
111struct ino_entry {
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112 struct list_head list; /* list head */
113 nid_t ino; /* inode number */
114};
115
116/* for the list of directory inodes */
117struct dir_inode_entry {
118 struct list_head list; /* list head */
119 struct inode *inode; /* vfs inode pointer */
120};
121
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122/* for the list of blockaddresses to be discarded */
123struct discard_entry {
124 struct list_head list; /* list head */
125 block_t blkaddr; /* block address to be discarded */
126 int len; /* # of consecutive blocks of the discard */
127};
128
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129/* for the list of fsync inodes, used only during recovery */
130struct fsync_inode_entry {
131 struct list_head list; /* list head */
132 struct inode *inode; /* vfs inode pointer */
133 block_t blkaddr; /* block address locating the last inode */
134};
135
136#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
137#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
138
139#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
140#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
141#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
142#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
143
144static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
145{
146 int before = nats_in_cursum(rs);
147 rs->n_nats = cpu_to_le16(before + i);
148 return before;
149}
150
151static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
152{
153 int before = sits_in_cursum(rs);
154 rs->n_sits = cpu_to_le16(before + i);
155 return before;
156}
157
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158/*
159 * ioctl commands
160 */
161#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
162#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
163
164#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
165/*
166 * ioctl commands in 32 bit emulation
167 */
168#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
169#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
170#endif
171
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172/*
173 * For INODE and NODE manager
174 */
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175/*
176 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
177 * as its node offset to distinguish from index node blocks.
178 * But some bits are used to mark the node block.
179 */
180#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
181 >> OFFSET_BIT_SHIFT)
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182enum {
183 ALLOC_NODE, /* allocate a new node page if needed */
184 LOOKUP_NODE, /* look up a node without readahead */
185 LOOKUP_NODE_RA, /*
186 * look up a node with readahead called
4f4124d0 187 * by get_data_block.
39a53e0c 188 */
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189};
190
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191#define F2FS_LINK_MAX 32000 /* maximum link count per file */
192
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193#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
194
39a53e0c 195/* for in-memory extent cache entry */
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196#define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
197
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198struct extent_info {
199 rwlock_t ext_lock; /* rwlock for consistency */
200 unsigned int fofs; /* start offset in a file */
201 u32 blk_addr; /* start block address of the extent */
111d2495 202 unsigned int len; /* length of the extent */
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203};
204
205/*
206 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
207 */
208#define FADVISE_COLD_BIT 0x01
354a3399 209#define FADVISE_LOST_PINO_BIT 0x02
39a53e0c 210
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211#define DEF_DIR_LEVEL 0
212
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213struct f2fs_inode_info {
214 struct inode vfs_inode; /* serve a vfs inode */
215 unsigned long i_flags; /* keep an inode flags for ioctl */
216 unsigned char i_advise; /* use to give file attribute hints */
38431545 217 unsigned char i_dir_level; /* use for dentry level for large dir */
39a53e0c 218 unsigned int i_current_depth; /* use only in directory structure */
6666e6aa 219 unsigned int i_pino; /* parent inode number */
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220 umode_t i_acl_mode; /* keep file acl mode temporarily */
221
222 /* Use below internally in f2fs*/
223 unsigned long flags; /* use to pass per-file flags */
d928bfbf 224 struct rw_semaphore i_sem; /* protect fi info */
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225 atomic_t dirty_dents; /* # of dirty dentry pages */
226 f2fs_hash_t chash; /* hash value of given file name */
227 unsigned int clevel; /* maximum level of given file name */
228 nid_t i_xattr_nid; /* node id that contains xattrs */
e518ff81 229 unsigned long long xattr_ver; /* cp version of xattr modification */
39a53e0c 230 struct extent_info ext; /* in-memory extent cache entry */
ed57c27f 231 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
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232};
233
234static inline void get_extent_info(struct extent_info *ext,
235 struct f2fs_extent i_ext)
236{
237 write_lock(&ext->ext_lock);
238 ext->fofs = le32_to_cpu(i_ext.fofs);
239 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
240 ext->len = le32_to_cpu(i_ext.len);
241 write_unlock(&ext->ext_lock);
242}
243
244static inline void set_raw_extent(struct extent_info *ext,
245 struct f2fs_extent *i_ext)
246{
247 read_lock(&ext->ext_lock);
248 i_ext->fofs = cpu_to_le32(ext->fofs);
249 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
250 i_ext->len = cpu_to_le32(ext->len);
251 read_unlock(&ext->ext_lock);
252}
253
254struct f2fs_nm_info {
255 block_t nat_blkaddr; /* base disk address of NAT */
256 nid_t max_nid; /* maximum possible node ids */
7ee0eeab 257 nid_t available_nids; /* maximum available node ids */
39a53e0c 258 nid_t next_scan_nid; /* the next nid to be scanned */
cdfc41c1 259 unsigned int ram_thresh; /* control the memory footprint */
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260
261 /* NAT cache management */
262 struct radix_tree_root nat_root;/* root of the nat entry cache */
263 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
264 unsigned int nat_cnt; /* the # of cached nat entries */
265 struct list_head nat_entries; /* cached nat entry list (clean) */
266 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */
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267 struct list_head nat_entry_set; /* nat entry set list */
268 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
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269
270 /* free node ids management */
8a7ed66a 271 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
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272 struct list_head free_nid_list; /* a list for free nids */
273 spinlock_t free_nid_list_lock; /* protect free nid list */
274 unsigned int fcnt; /* the number of free node id */
275 struct mutex build_lock; /* lock for build free nids */
276
277 /* for checkpoint */
278 char *nat_bitmap; /* NAT bitmap pointer */
279 int bitmap_size; /* bitmap size */
280};
281
282/*
283 * this structure is used as one of function parameters.
284 * all the information are dedicated to a given direct node block determined
285 * by the data offset in a file.
286 */
287struct dnode_of_data {
288 struct inode *inode; /* vfs inode pointer */
289 struct page *inode_page; /* its inode page, NULL is possible */
290 struct page *node_page; /* cached direct node page */
291 nid_t nid; /* node id of the direct node block */
292 unsigned int ofs_in_node; /* data offset in the node page */
293 bool inode_page_locked; /* inode page is locked or not */
294 block_t data_blkaddr; /* block address of the node block */
295};
296
297static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
298 struct page *ipage, struct page *npage, nid_t nid)
299{
d66d1f76 300 memset(dn, 0, sizeof(*dn));
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301 dn->inode = inode;
302 dn->inode_page = ipage;
303 dn->node_page = npage;
304 dn->nid = nid;
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305}
306
307/*
308 * For SIT manager
309 *
310 * By default, there are 6 active log areas across the whole main area.
311 * When considering hot and cold data separation to reduce cleaning overhead,
312 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
313 * respectively.
314 * In the current design, you should not change the numbers intentionally.
315 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
316 * logs individually according to the underlying devices. (default: 6)
317 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
318 * data and 8 for node logs.
319 */
320#define NR_CURSEG_DATA_TYPE (3)
321#define NR_CURSEG_NODE_TYPE (3)
322#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
323
324enum {
325 CURSEG_HOT_DATA = 0, /* directory entry blocks */
326 CURSEG_WARM_DATA, /* data blocks */
327 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
328 CURSEG_HOT_NODE, /* direct node blocks of directory files */
329 CURSEG_WARM_NODE, /* direct node blocks of normal files */
330 CURSEG_COLD_NODE, /* indirect node blocks */
331 NO_CHECK_TYPE
332};
333
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334struct flush_cmd {
335 struct flush_cmd *next;
336 struct completion wait;
337 int ret;
338};
339
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340struct flush_cmd_control {
341 struct task_struct *f2fs_issue_flush; /* flush thread */
342 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
343 struct flush_cmd *issue_list; /* list for command issue */
344 struct flush_cmd *dispatch_list; /* list for command dispatch */
345 spinlock_t issue_lock; /* for issue list lock */
346 struct flush_cmd *issue_tail; /* list tail of issue list */
347};
348
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349struct f2fs_sm_info {
350 struct sit_info *sit_info; /* whole segment information */
351 struct free_segmap_info *free_info; /* free segment information */
352 struct dirty_seglist_info *dirty_info; /* dirty segment information */
353 struct curseg_info *curseg_array; /* active segment information */
354
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355 block_t seg0_blkaddr; /* block address of 0'th segment */
356 block_t main_blkaddr; /* start block address of main area */
357 block_t ssa_blkaddr; /* start block address of SSA area */
358
359 unsigned int segment_count; /* total # of segments */
360 unsigned int main_segments; /* # of segments in main area */
361 unsigned int reserved_segments; /* # of reserved segments */
362 unsigned int ovp_segments; /* # of overprovision segments */
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363
364 /* a threshold to reclaim prefree segments */
365 unsigned int rec_prefree_segments;
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366
367 /* for small discard management */
368 struct list_head discard_list; /* 4KB discard list */
369 int nr_discards; /* # of discards in the list */
370 int max_discards; /* max. discards to be issued */
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371
372 unsigned int ipu_policy; /* in-place-update policy */
373 unsigned int min_ipu_util; /* in-place-update threshold */
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374
375 /* for flush command control */
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376 struct flush_cmd_control *cmd_control_info;
377
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378};
379
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380/*
381 * For superblock
382 */
383/*
384 * COUNT_TYPE for monitoring
385 *
386 * f2fs monitors the number of several block types such as on-writeback,
387 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
388 */
389enum count_type {
390 F2FS_WRITEBACK,
391 F2FS_DIRTY_DENTS,
392 F2FS_DIRTY_NODES,
393 F2FS_DIRTY_META,
394 NR_COUNT_TYPE,
395};
396
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397/*
398 * The below are the page types of bios used in submti_bio().
399 * The available types are:
400 * DATA User data pages. It operates as async mode.
401 * NODE Node pages. It operates as async mode.
402 * META FS metadata pages such as SIT, NAT, CP.
403 * NR_PAGE_TYPE The number of page types.
404 * META_FLUSH Make sure the previous pages are written
405 * with waiting the bio's completion
406 * ... Only can be used with META.
407 */
7d5e5109 408#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
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409enum page_type {
410 DATA,
411 NODE,
412 META,
413 NR_PAGE_TYPE,
414 META_FLUSH,
415};
416
458e6197 417struct f2fs_io_info {
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418 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
419 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
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420};
421
93dfe2ac 422#define is_read_io(rw) (((rw) & 1) == READ)
1ff7bd3b 423struct f2fs_bio_info {
458e6197 424 struct f2fs_sb_info *sbi; /* f2fs superblock */
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425 struct bio *bio; /* bios to merge */
426 sector_t last_block_in_bio; /* last block number */
458e6197 427 struct f2fs_io_info fio; /* store buffered io info. */
df0f8dc0 428 struct rw_semaphore io_rwsem; /* blocking op for bio */
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429};
430
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431struct f2fs_sb_info {
432 struct super_block *sb; /* pointer to VFS super block */
5e176d54 433 struct proc_dir_entry *s_proc; /* proc entry */
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434 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
435 struct f2fs_super_block *raw_super; /* raw super block pointer */
436 int s_dirty; /* dirty flag for checkpoint */
437
438 /* for node-related operations */
439 struct f2fs_nm_info *nm_info; /* node manager */
440 struct inode *node_inode; /* cache node blocks */
441
442 /* for segment-related operations */
443 struct f2fs_sm_info *sm_info; /* segment manager */
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444
445 /* for bio operations */
924b720b 446 struct f2fs_bio_info read_io; /* for read bios */
1ff7bd3b 447 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
1b1f559f 448 struct completion *wait_io; /* for completion bios */
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449
450 /* for checkpoint */
451 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
452 struct inode *meta_inode; /* cache meta blocks */
39936837 453 struct mutex cp_mutex; /* checkpoint procedure lock */
e479556b 454 struct rw_semaphore cp_rwsem; /* blocking FS operations */
39936837 455 struct mutex node_write; /* locking node writes */
39a53e0c 456 struct mutex writepages; /* mutex for writepages() */
aabe5136 457 bool por_doing; /* recovery is doing or not */
fb51b5ef 458 wait_queue_head_t cp_wait;
39a53e0c 459
6451e041 460 /* for inode management */
39efac41 461 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
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462 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
463 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
464
465 /* for orphan inode, use 0'th array */
39a53e0c 466 unsigned int n_orphans; /* # of orphan inodes */
0d47c1ad 467 unsigned int max_orphans; /* max orphan inodes */
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468
469 /* for directory inode management */
470 struct list_head dir_inode_list; /* dir inode list */
471 spinlock_t dir_inode_lock; /* for dir inode list lock */
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472
473 /* basic file system units */
474 unsigned int log_sectors_per_block; /* log2 sectors per block */
475 unsigned int log_blocksize; /* log2 block size */
476 unsigned int blocksize; /* block size */
477 unsigned int root_ino_num; /* root inode number*/
478 unsigned int node_ino_num; /* node inode number*/
479 unsigned int meta_ino_num; /* meta inode number*/
480 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
481 unsigned int blocks_per_seg; /* blocks per segment */
482 unsigned int segs_per_sec; /* segments per section */
483 unsigned int secs_per_zone; /* sections per zone */
484 unsigned int total_sections; /* total section count */
485 unsigned int total_node_count; /* total node block count */
486 unsigned int total_valid_node_count; /* valid node block count */
487 unsigned int total_valid_inode_count; /* valid inode count */
488 int active_logs; /* # of active logs */
ab9fa662 489 int dir_level; /* directory level */
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490
491 block_t user_block_count; /* # of user blocks */
492 block_t total_valid_block_count; /* # of valid blocks */
493 block_t alloc_valid_block_count; /* # of allocated blocks */
494 block_t last_valid_block_count; /* for recovery */
495 u32 s_next_generation; /* for NFS support */
496 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
497
498 struct f2fs_mount_info mount_opt; /* mount options */
499
500 /* for cleaning operations */
501 struct mutex gc_mutex; /* mutex for GC */
502 struct f2fs_gc_kthread *gc_thread; /* GC thread */
5ec4e49f 503 unsigned int cur_victim_sec; /* current victim section num */
39a53e0c 504
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505 /* maximum # of trials to find a victim segment for SSR and GC */
506 unsigned int max_victim_search;
507
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508 /*
509 * for stat information.
510 * one is for the LFS mode, and the other is for the SSR mode.
511 */
35b09d82 512#ifdef CONFIG_F2FS_STAT_FS
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513 struct f2fs_stat_info *stat_info; /* FS status information */
514 unsigned int segment_count[2]; /* # of allocated segments */
515 unsigned int block_count[2]; /* # of allocated blocks */
39a53e0c 516 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
0dbdc2ae 517 int inline_inode; /* # of inline_data inodes */
39a53e0c 518 int bg_gc; /* background gc calls */
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519 unsigned int n_dirty_dirs; /* # of dir inodes */
520#endif
521 unsigned int last_victim[2]; /* last victim segment # */
39a53e0c 522 spinlock_t stat_lock; /* lock for stat operations */
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523
524 /* For sysfs suppport */
525 struct kobject s_kobj;
526 struct completion s_kobj_unregister;
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527};
528
529/*
530 * Inline functions
531 */
532static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
533{
534 return container_of(inode, struct f2fs_inode_info, vfs_inode);
535}
536
537static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
538{
539 return sb->s_fs_info;
540}
541
542static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
543{
544 return (struct f2fs_super_block *)(sbi->raw_super);
545}
546
547static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
548{
549 return (struct f2fs_checkpoint *)(sbi->ckpt);
550}
551
45590710
GZ
552static inline struct f2fs_node *F2FS_NODE(struct page *page)
553{
554 return (struct f2fs_node *)page_address(page);
555}
556
58bfaf44
JK
557static inline struct f2fs_inode *F2FS_INODE(struct page *page)
558{
559 return &((struct f2fs_node *)page_address(page))->i;
560}
561
39a53e0c
JK
562static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
563{
564 return (struct f2fs_nm_info *)(sbi->nm_info);
565}
566
567static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
568{
569 return (struct f2fs_sm_info *)(sbi->sm_info);
570}
571
572static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
573{
574 return (struct sit_info *)(SM_I(sbi)->sit_info);
575}
576
577static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
578{
579 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
580}
581
582static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
583{
584 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
585}
586
9df27d98
GZ
587static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
588{
589 return sbi->meta_inode->i_mapping;
590}
591
4ef51a8f
JK
592static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
593{
594 return sbi->node_inode->i_mapping;
595}
596
39a53e0c
JK
597static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
598{
599 sbi->s_dirty = 1;
600}
601
602static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
603{
604 sbi->s_dirty = 0;
605}
606
d71b5564
JK
607static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
608{
609 return le64_to_cpu(cp->checkpoint_ver);
610}
611
25ca923b
JK
612static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
613{
614 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
615 return ckpt_flags & f;
616}
617
618static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
619{
620 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
621 ckpt_flags |= f;
622 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
623}
624
625static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
626{
627 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
628 ckpt_flags &= (~f);
629 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
630}
631
e479556b 632static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
39936837 633{
e479556b 634 down_read(&sbi->cp_rwsem);
39936837
JK
635}
636
e479556b 637static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
39a53e0c 638{
e479556b 639 up_read(&sbi->cp_rwsem);
39a53e0c
JK
640}
641
e479556b 642static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
39a53e0c 643{
0daaad97 644 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
39936837
JK
645}
646
e479556b 647static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
39936837 648{
e479556b 649 up_write(&sbi->cp_rwsem);
39a53e0c
JK
650}
651
652/*
653 * Check whether the given nid is within node id range.
654 */
064e0823 655static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
39a53e0c 656{
d6b7d4b3
CY
657 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
658 return -EINVAL;
cfb271d4 659 if (unlikely(nid >= NM_I(sbi)->max_nid))
064e0823
NJ
660 return -EINVAL;
661 return 0;
39a53e0c
JK
662}
663
664#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
665
666/*
667 * Check whether the inode has blocks or not
668 */
669static inline int F2FS_HAS_BLOCKS(struct inode *inode)
670{
671 if (F2FS_I(inode)->i_xattr_nid)
6c311ec6 672 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
39a53e0c 673 else
6c311ec6 674 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
39a53e0c
JK
675}
676
4bc8e9bc
CY
677static inline bool f2fs_has_xattr_block(unsigned int ofs)
678{
679 return ofs == XATTR_NODE_OFFSET;
680}
681
39a53e0c
JK
682static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
683 struct inode *inode, blkcnt_t count)
684{
685 block_t valid_block_count;
686
687 spin_lock(&sbi->stat_lock);
688 valid_block_count =
689 sbi->total_valid_block_count + (block_t)count;
cfb271d4 690 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
691 spin_unlock(&sbi->stat_lock);
692 return false;
693 }
694 inode->i_blocks += count;
695 sbi->total_valid_block_count = valid_block_count;
696 sbi->alloc_valid_block_count += (block_t)count;
697 spin_unlock(&sbi->stat_lock);
698 return true;
699}
700
da19b0dc 701static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
39a53e0c
JK
702 struct inode *inode,
703 blkcnt_t count)
704{
705 spin_lock(&sbi->stat_lock);
5d56b671
JK
706 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count);
707 f2fs_bug_on(inode->i_blocks < count);
39a53e0c
JK
708 inode->i_blocks -= count;
709 sbi->total_valid_block_count -= (block_t)count;
710 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
711}
712
713static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
714{
715 atomic_inc(&sbi->nr_pages[count_type]);
716 F2FS_SET_SB_DIRT(sbi);
717}
718
719static inline void inode_inc_dirty_dents(struct inode *inode)
720{
1fe54f9d 721 inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
39a53e0c
JK
722 atomic_inc(&F2FS_I(inode)->dirty_dents);
723}
724
725static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
726{
727 atomic_dec(&sbi->nr_pages[count_type]);
728}
729
730static inline void inode_dec_dirty_dents(struct inode *inode)
731{
1fe54f9d
JK
732 if (!S_ISDIR(inode->i_mode))
733 return;
734
735 dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
39a53e0c
JK
736 atomic_dec(&F2FS_I(inode)->dirty_dents);
737}
738
739static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
740{
741 return atomic_read(&sbi->nr_pages[count_type]);
742}
743
f8b2c1f9
JK
744static inline int get_dirty_dents(struct inode *inode)
745{
746 return atomic_read(&F2FS_I(inode)->dirty_dents);
747}
748
5ac206cf
NJ
749static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
750{
751 unsigned int pages_per_sec = sbi->segs_per_sec *
752 (1 << sbi->log_blocks_per_seg);
753 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
754 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
755}
756
39a53e0c
JK
757static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
758{
8b8343fa 759 return sbi->total_valid_block_count;
39a53e0c
JK
760}
761
762static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
763{
764 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
765
766 /* return NAT or SIT bitmap */
767 if (flag == NAT_BITMAP)
768 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
769 else if (flag == SIT_BITMAP)
770 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
771
772 return 0;
773}
774
775static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
776{
777 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1dbe4152
CL
778 int offset;
779
780 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
781 if (flag == NAT_BITMAP)
782 return &ckpt->sit_nat_version_bitmap;
783 else
784 return ((unsigned char *)ckpt + F2FS_BLKSIZE);
785 } else {
786 offset = (flag == NAT_BITMAP) ?
25ca923b 787 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
1dbe4152
CL
788 return &ckpt->sit_nat_version_bitmap + offset;
789 }
39a53e0c
JK
790}
791
792static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
793{
794 block_t start_addr;
795 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
d71b5564 796 unsigned long long ckpt_version = cur_cp_version(ckpt);
39a53e0c 797
25ca923b 798 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
39a53e0c
JK
799
800 /*
801 * odd numbered checkpoint should at cp segment 0
802 * and even segent must be at cp segment 1
803 */
804 if (!(ckpt_version & 1))
805 start_addr += sbi->blocks_per_seg;
806
807 return start_addr;
808}
809
810static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
811{
812 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
813}
814
815static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 816 struct inode *inode)
39a53e0c
JK
817{
818 block_t valid_block_count;
819 unsigned int valid_node_count;
820
821 spin_lock(&sbi->stat_lock);
822
ef86d709 823 valid_block_count = sbi->total_valid_block_count + 1;
cfb271d4 824 if (unlikely(valid_block_count > sbi->user_block_count)) {
39a53e0c
JK
825 spin_unlock(&sbi->stat_lock);
826 return false;
827 }
828
ef86d709 829 valid_node_count = sbi->total_valid_node_count + 1;
cfb271d4 830 if (unlikely(valid_node_count > sbi->total_node_count)) {
39a53e0c
JK
831 spin_unlock(&sbi->stat_lock);
832 return false;
833 }
834
835 if (inode)
ef86d709
GZ
836 inode->i_blocks++;
837
838 sbi->alloc_valid_block_count++;
839 sbi->total_valid_node_count++;
840 sbi->total_valid_block_count++;
39a53e0c
JK
841 spin_unlock(&sbi->stat_lock);
842
843 return true;
844}
845
846static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
ef86d709 847 struct inode *inode)
39a53e0c
JK
848{
849 spin_lock(&sbi->stat_lock);
850
ef86d709
GZ
851 f2fs_bug_on(!sbi->total_valid_block_count);
852 f2fs_bug_on(!sbi->total_valid_node_count);
853 f2fs_bug_on(!inode->i_blocks);
39a53e0c 854
ef86d709
GZ
855 inode->i_blocks--;
856 sbi->total_valid_node_count--;
857 sbi->total_valid_block_count--;
39a53e0c
JK
858
859 spin_unlock(&sbi->stat_lock);
860}
861
862static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
863{
8b8343fa 864 return sbi->total_valid_node_count;
39a53e0c
JK
865}
866
867static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
868{
869 spin_lock(&sbi->stat_lock);
5d56b671 870 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count);
39a53e0c
JK
871 sbi->total_valid_inode_count++;
872 spin_unlock(&sbi->stat_lock);
873}
874
0e80220a 875static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
39a53e0c
JK
876{
877 spin_lock(&sbi->stat_lock);
5d56b671 878 f2fs_bug_on(!sbi->total_valid_inode_count);
39a53e0c
JK
879 sbi->total_valid_inode_count--;
880 spin_unlock(&sbi->stat_lock);
39a53e0c
JK
881}
882
883static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
884{
8b8343fa 885 return sbi->total_valid_inode_count;
39a53e0c
JK
886}
887
888static inline void f2fs_put_page(struct page *page, int unlock)
889{
031fa8cc 890 if (!page)
39a53e0c
JK
891 return;
892
893 if (unlock) {
5d56b671 894 f2fs_bug_on(!PageLocked(page));
39a53e0c
JK
895 unlock_page(page);
896 }
897 page_cache_release(page);
898}
899
900static inline void f2fs_put_dnode(struct dnode_of_data *dn)
901{
902 if (dn->node_page)
903 f2fs_put_page(dn->node_page, 1);
904 if (dn->inode_page && dn->node_page != dn->inode_page)
905 f2fs_put_page(dn->inode_page, 0);
906 dn->node_page = NULL;
907 dn->inode_page = NULL;
908}
909
910static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
e8512d2e 911 size_t size)
39a53e0c 912{
e8512d2e 913 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
39a53e0c
JK
914}
915
7bd59381
GZ
916static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
917 gfp_t flags)
918{
919 void *entry;
920retry:
921 entry = kmem_cache_alloc(cachep, flags);
922 if (!entry) {
923 cond_resched();
924 goto retry;
925 }
926
927 return entry;
928}
929
39a53e0c
JK
930#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
931
932static inline bool IS_INODE(struct page *page)
933{
45590710 934 struct f2fs_node *p = F2FS_NODE(page);
39a53e0c
JK
935 return RAW_IS_INODE(p);
936}
937
938static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
939{
940 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
941}
942
943static inline block_t datablock_addr(struct page *node_page,
944 unsigned int offset)
945{
946 struct f2fs_node *raw_node;
947 __le32 *addr_array;
45590710 948 raw_node = F2FS_NODE(node_page);
39a53e0c
JK
949 addr_array = blkaddr_in_node(raw_node);
950 return le32_to_cpu(addr_array[offset]);
951}
952
953static inline int f2fs_test_bit(unsigned int nr, char *addr)
954{
955 int mask;
956
957 addr += (nr >> 3);
958 mask = 1 << (7 - (nr & 0x07));
959 return mask & *addr;
960}
961
962static inline int f2fs_set_bit(unsigned int nr, char *addr)
963{
964 int mask;
965 int ret;
966
967 addr += (nr >> 3);
968 mask = 1 << (7 - (nr & 0x07));
969 ret = mask & *addr;
970 *addr |= mask;
971 return ret;
972}
973
974static inline int f2fs_clear_bit(unsigned int nr, char *addr)
975{
976 int mask;
977 int ret;
978
979 addr += (nr >> 3);
980 mask = 1 << (7 - (nr & 0x07));
981 ret = mask & *addr;
982 *addr &= ~mask;
983 return ret;
984}
985
986/* used for f2fs_inode_info->flags */
987enum {
988 FI_NEW_INODE, /* indicate newly allocated inode */
b3783873 989 FI_DIRTY_INODE, /* indicate inode is dirty or not */
ed57c27f 990 FI_DIRTY_DIR, /* indicate directory has dirty pages */
39a53e0c
JK
991 FI_INC_LINK, /* need to increment i_nlink */
992 FI_ACL_MODE, /* indicate acl mode */
993 FI_NO_ALLOC, /* should not allocate any blocks */
699489bb 994 FI_UPDATE_DIR, /* should update inode block for consistency */
74d0b917 995 FI_DELAY_IPUT, /* used for the recovery */
c11abd1a 996 FI_NO_EXTENT, /* not to use the extent cache */
444c580f 997 FI_INLINE_XATTR, /* used for inline xattr */
1001b347 998 FI_INLINE_DATA, /* used for inline data*/
fff04f90
JK
999 FI_APPEND_WRITE, /* inode has appended data */
1000 FI_UPDATE_WRITE, /* inode has in-place-update data */
39a53e0c
JK
1001};
1002
1003static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1004{
1005 set_bit(flag, &fi->flags);
1006}
1007
1008static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1009{
1010 return test_bit(flag, &fi->flags);
1011}
1012
1013static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1014{
1015 clear_bit(flag, &fi->flags);
1016}
1017
1018static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1019{
1020 fi->i_acl_mode = mode;
1021 set_inode_flag(fi, FI_ACL_MODE);
1022}
1023
1024static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1025{
1026 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1027 clear_inode_flag(fi, FI_ACL_MODE);
1028 return 1;
1029 }
1030 return 0;
1031}
1032
444c580f
JK
1033static inline void get_inline_info(struct f2fs_inode_info *fi,
1034 struct f2fs_inode *ri)
1035{
1036 if (ri->i_inline & F2FS_INLINE_XATTR)
1037 set_inode_flag(fi, FI_INLINE_XATTR);
1001b347
HL
1038 if (ri->i_inline & F2FS_INLINE_DATA)
1039 set_inode_flag(fi, FI_INLINE_DATA);
444c580f
JK
1040}
1041
1042static inline void set_raw_inline(struct f2fs_inode_info *fi,
1043 struct f2fs_inode *ri)
1044{
1045 ri->i_inline = 0;
1046
1047 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1048 ri->i_inline |= F2FS_INLINE_XATTR;
1001b347
HL
1049 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1050 ri->i_inline |= F2FS_INLINE_DATA;
444c580f
JK
1051}
1052
987c7c31
CY
1053static inline int f2fs_has_inline_xattr(struct inode *inode)
1054{
1055 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1056}
1057
de93653f
JK
1058static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1059{
987c7c31 1060 if (f2fs_has_inline_xattr(&fi->vfs_inode))
de93653f
JK
1061 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1062 return DEF_ADDRS_PER_INODE;
1063}
1064
65985d93
JK
1065static inline void *inline_xattr_addr(struct page *page)
1066{
695fd1ed 1067 struct f2fs_inode *ri = F2FS_INODE(page);
65985d93
JK
1068 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1069 F2FS_INLINE_XATTR_ADDRS]);
1070}
1071
1072static inline int inline_xattr_size(struct inode *inode)
1073{
987c7c31 1074 if (f2fs_has_inline_xattr(inode))
65985d93
JK
1075 return F2FS_INLINE_XATTR_ADDRS << 2;
1076 else
1077 return 0;
1078}
1079
0dbdc2ae
JK
1080static inline int f2fs_has_inline_data(struct inode *inode)
1081{
1082 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1083}
1084
1001b347
HL
1085static inline void *inline_data_addr(struct page *page)
1086{
695fd1ed 1087 struct f2fs_inode *ri = F2FS_INODE(page);
1001b347
HL
1088 return (void *)&(ri->i_addr[1]);
1089}
1090
77888c1e
JK
1091static inline int f2fs_readonly(struct super_block *sb)
1092{
1093 return sb->s_flags & MS_RDONLY;
1094}
1095
744602cf
JK
1096static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1097{
1098 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1099 sbi->sb->s_flags |= MS_RDONLY;
1100}
1101
a6dda0e6
CH
1102#define get_inode_mode(i) \
1103 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1104 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1105
267378d4
CY
1106/* get offset of first page in next direct node */
1107#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1108 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1109 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1110 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1111
39a53e0c
JK
1112/*
1113 * file.c
1114 */
1115int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1116void truncate_data_blocks(struct dnode_of_data *);
1e1bb4ba 1117int truncate_blocks(struct inode *, u64);
39a53e0c 1118void f2fs_truncate(struct inode *);
2d4d9fb5 1119int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
39a53e0c
JK
1120int f2fs_setattr(struct dentry *, struct iattr *);
1121int truncate_hole(struct inode *, pgoff_t, pgoff_t);
b292dcab 1122int truncate_data_blocks_range(struct dnode_of_data *, int);
39a53e0c 1123long f2fs_ioctl(struct file *, unsigned int, unsigned long);
e9750824 1124long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
39a53e0c
JK
1125
1126/*
1127 * inode.c
1128 */
1129void f2fs_set_inode_flags(struct inode *);
39a53e0c 1130struct inode *f2fs_iget(struct super_block *, unsigned long);
4660f9c0 1131int try_to_free_nats(struct f2fs_sb_info *, int);
39a53e0c 1132void update_inode(struct inode *, struct page *);
744602cf 1133void update_inode_page(struct inode *);
39a53e0c
JK
1134int f2fs_write_inode(struct inode *, struct writeback_control *);
1135void f2fs_evict_inode(struct inode *);
1136
1137/*
1138 * namei.c
1139 */
1140struct dentry *f2fs_get_parent(struct dentry *child);
1141
1142/*
1143 * dir.c
1144 */
1145struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1146 struct page **);
1147struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1148ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1149void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1150 struct page *, struct inode *);
1cd14caf 1151int update_dent_inode(struct inode *, const struct qstr *);
b7f7a5e0 1152int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
39a53e0c 1153void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
b97a9b5d 1154int f2fs_do_tmpfile(struct inode *, struct inode *);
39a53e0c
JK
1155int f2fs_make_empty(struct inode *, struct inode *);
1156bool f2fs_empty_dir(struct inode *);
1157
b7f7a5e0
AV
1158static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1159{
1160 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1161 inode);
1162}
1163
39a53e0c
JK
1164/*
1165 * super.c
1166 */
1167int f2fs_sync_fs(struct super_block *, int);
a07ef784
NJ
1168extern __printf(3, 4)
1169void f2fs_msg(struct super_block *, const char *, const char *, ...);
39a53e0c
JK
1170
1171/*
1172 * hash.c
1173 */
eee6160f 1174f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
39a53e0c
JK
1175
1176/*
1177 * node.c
1178 */
1179struct dnode_of_data;
1180struct node_info;
1181
6fb03f3a 1182bool available_free_memory(struct f2fs_sb_info *, int);
39a53e0c 1183int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
479f40c4 1184bool fsync_mark_done(struct f2fs_sb_info *, nid_t);
b6fe5873 1185void fsync_mark_clear(struct f2fs_sb_info *, nid_t);
39a53e0c
JK
1186void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1187int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1188int truncate_inode_blocks(struct inode *, pgoff_t);
4f16fb0f 1189int truncate_xattr_node(struct inode *, struct page *);
cfe58f9d 1190int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
58e674d6 1191void remove_inode_page(struct inode *);
a014e037 1192struct page *new_inode_page(struct inode *);
8ae8f162 1193struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
39a53e0c
JK
1194void ra_node_page(struct f2fs_sb_info *, nid_t);
1195struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1196struct page *get_node_page_ra(struct page *, int);
1197void sync_inode_page(struct dnode_of_data *);
1198int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1199bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1200void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1201void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
1202void recover_node_page(struct f2fs_sb_info *, struct page *,
1203 struct f2fs_summary *, struct node_info *, block_t);
abb2366c 1204bool recover_xattr_data(struct inode *, struct page *, block_t);
39a53e0c
JK
1205int recover_inode_page(struct f2fs_sb_info *, struct page *);
1206int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1207 struct f2fs_summary_block *);
1208void flush_nat_entries(struct f2fs_sb_info *);
1209int build_node_manager(struct f2fs_sb_info *);
1210void destroy_node_manager(struct f2fs_sb_info *);
6e6093a8 1211int __init create_node_manager_caches(void);
39a53e0c
JK
1212void destroy_node_manager_caches(void);
1213
1214/*
1215 * segment.c
1216 */
1217void f2fs_balance_fs(struct f2fs_sb_info *);
4660f9c0 1218void f2fs_balance_fs_bg(struct f2fs_sb_info *);
6b4afdd7 1219int f2fs_issue_flush(struct f2fs_sb_info *);
2163d198
GZ
1220int create_flush_cmd_control(struct f2fs_sb_info *);
1221void destroy_flush_cmd_control(struct f2fs_sb_info *);
39a53e0c 1222void invalidate_blocks(struct f2fs_sb_info *, block_t);
5e443818 1223void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
39a53e0c 1224void clear_prefree_segments(struct f2fs_sb_info *);
1e87a78d 1225void discard_next_dnode(struct f2fs_sb_info *);
39a53e0c
JK
1226int npages_for_summary_flush(struct f2fs_sb_info *);
1227void allocate_new_segments(struct f2fs_sb_info *);
1228struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
577e3495 1229void write_meta_page(struct f2fs_sb_info *, struct page *);
fb5566da
JK
1230void write_node_page(struct f2fs_sb_info *, struct page *,
1231 struct f2fs_io_info *, unsigned int, block_t, block_t *);
458e6197
JK
1232void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1233 struct f2fs_io_info *);
1234void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
39a53e0c
JK
1235void recover_data_page(struct f2fs_sb_info *, struct page *,
1236 struct f2fs_summary *, block_t, block_t);
1237void rewrite_node_page(struct f2fs_sb_info *, struct page *,
1238 struct f2fs_summary *, block_t, block_t);
bfad7c2d
JK
1239void allocate_data_block(struct f2fs_sb_info *, struct page *,
1240 block_t, block_t *, struct f2fs_summary *, int);
5514f0aa 1241void f2fs_wait_on_page_writeback(struct page *, enum page_type);
39a53e0c
JK
1242void write_data_summaries(struct f2fs_sb_info *, block_t);
1243void write_node_summaries(struct f2fs_sb_info *, block_t);
1244int lookup_journal_in_cursum(struct f2fs_summary_block *,
1245 int, unsigned int, int);
1246void flush_sit_entries(struct f2fs_sb_info *);
1247int build_segment_manager(struct f2fs_sb_info *);
39a53e0c 1248void destroy_segment_manager(struct f2fs_sb_info *);
7fd9e544
JK
1249int __init create_segment_manager_caches(void);
1250void destroy_segment_manager_caches(void);
39a53e0c
JK
1251
1252/*
1253 * checkpoint.c
1254 */
1255struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1256struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
662befda 1257int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
39a53e0c 1258long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
fff04f90
JK
1259void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1260void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1261bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
cbd56e7d
JK
1262int acquire_orphan_inode(struct f2fs_sb_info *);
1263void release_orphan_inode(struct f2fs_sb_info *);
39a53e0c
JK
1264void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1265void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
8f99a946 1266void recover_orphan_inodes(struct f2fs_sb_info *);
39a53e0c
JK
1267int get_valid_checkpoint(struct f2fs_sb_info *);
1268void set_dirty_dir_page(struct inode *, struct page *);
5deb8267 1269void add_dirty_dir_inode(struct inode *);
39a53e0c
JK
1270void remove_dirty_dir_inode(struct inode *);
1271void sync_dirty_dir_inodes(struct f2fs_sb_info *);
43727527 1272void write_checkpoint(struct f2fs_sb_info *, bool);
6451e041 1273void init_ino_entry_info(struct f2fs_sb_info *);
6e6093a8 1274int __init create_checkpoint_caches(void);
39a53e0c
JK
1275void destroy_checkpoint_caches(void);
1276
1277/*
1278 * data.c
1279 */
458e6197 1280void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
93dfe2ac
JK
1281int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1282void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
458e6197 1283 struct f2fs_io_info *);
39a53e0c 1284int reserve_new_block(struct dnode_of_data *);
b600965c 1285int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
39a53e0c 1286void update_extent_cache(block_t, struct dnode_of_data *);
c718379b 1287struct page *find_data_page(struct inode *, pgoff_t, bool);
39a53e0c 1288struct page *get_lock_data_page(struct inode *, pgoff_t);
64aa7ed9 1289struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
458e6197 1290int do_write_data_page(struct page *, struct f2fs_io_info *);
9ab70134 1291int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
39a53e0c
JK
1292
1293/*
1294 * gc.c
1295 */
1296int start_gc_thread(struct f2fs_sb_info *);
1297void stop_gc_thread(struct f2fs_sb_info *);
de93653f 1298block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
408e9375 1299int f2fs_gc(struct f2fs_sb_info *);
39a53e0c 1300void build_gc_manager(struct f2fs_sb_info *);
6e6093a8 1301int __init create_gc_caches(void);
39a53e0c
JK
1302void destroy_gc_caches(void);
1303
1304/*
1305 * recovery.c
1306 */
6ead1142 1307int recover_fsync_data(struct f2fs_sb_info *);
39a53e0c
JK
1308bool space_for_roll_forward(struct f2fs_sb_info *);
1309
1310/*
1311 * debug.c
1312 */
1313#ifdef CONFIG_F2FS_STAT_FS
1314struct f2fs_stat_info {
1315 struct list_head stat_list;
1316 struct f2fs_sb_info *sbi;
39a53e0c
JK
1317 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1318 int main_area_segs, main_area_sections, main_area_zones;
1319 int hit_ext, total_ext;
1320 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1321 int nats, sits, fnids;
1322 int total_count, utilization;
0dbdc2ae 1323 int bg_gc, inline_inode;
39a53e0c
JK
1324 unsigned int valid_count, valid_node_count, valid_inode_count;
1325 unsigned int bimodal, avg_vblocks;
1326 int util_free, util_valid, util_invalid;
1327 int rsvd_segs, overp_segs;
1328 int dirty_count, node_pages, meta_pages;
942e0be6 1329 int prefree_count, call_count, cp_count;
39a53e0c
JK
1330 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1331 int tot_blks, data_blks, node_blks;
1332 int curseg[NR_CURSEG_TYPE];
1333 int cursec[NR_CURSEG_TYPE];
1334 int curzone[NR_CURSEG_TYPE];
1335
1336 unsigned int segment_count[2];
1337 unsigned int block_count[2];
1338 unsigned base_mem, cache_mem;
1339};
1340
963d4f7d
GZ
1341static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1342{
6c311ec6 1343 return (struct f2fs_stat_info *)sbi->stat_info;
963d4f7d
GZ
1344}
1345
942e0be6 1346#define stat_inc_cp_count(si) ((si)->cp_count++)
dcdfff65
JK
1347#define stat_inc_call_count(si) ((si)->call_count++)
1348#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1349#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1350#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1351#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1352#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
0dbdc2ae
JK
1353#define stat_inc_inline_inode(inode) \
1354 do { \
1355 if (f2fs_has_inline_data(inode)) \
1356 ((F2FS_SB(inode->i_sb))->inline_inode++); \
1357 } while (0)
1358#define stat_dec_inline_inode(inode) \
1359 do { \
1360 if (f2fs_has_inline_data(inode)) \
1361 ((F2FS_SB(inode->i_sb))->inline_inode--); \
1362 } while (0)
1363
dcdfff65
JK
1364#define stat_inc_seg_type(sbi, curseg) \
1365 ((sbi)->segment_count[(curseg)->alloc_type]++)
1366#define stat_inc_block_count(sbi, curseg) \
1367 ((sbi)->block_count[(curseg)->alloc_type]++)
39a53e0c
JK
1368
1369#define stat_inc_seg_count(sbi, type) \
1370 do { \
963d4f7d 1371 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1372 (si)->tot_segs++; \
1373 if (type == SUM_TYPE_DATA) \
1374 si->data_segs++; \
1375 else \
1376 si->node_segs++; \
1377 } while (0)
1378
1379#define stat_inc_tot_blk_count(si, blks) \
1380 (si->tot_blks += (blks))
1381
1382#define stat_inc_data_blk_count(sbi, blks) \
1383 do { \
963d4f7d 1384 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1385 stat_inc_tot_blk_count(si, blks); \
1386 si->data_blks += (blks); \
1387 } while (0)
1388
1389#define stat_inc_node_blk_count(sbi, blks) \
1390 do { \
963d4f7d 1391 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
39a53e0c
JK
1392 stat_inc_tot_blk_count(si, blks); \
1393 si->node_blks += (blks); \
1394 } while (0)
1395
1396int f2fs_build_stats(struct f2fs_sb_info *);
1397void f2fs_destroy_stats(struct f2fs_sb_info *);
6e6093a8 1398void __init f2fs_create_root_stats(void);
4589d25d 1399void f2fs_destroy_root_stats(void);
39a53e0c 1400#else
942e0be6 1401#define stat_inc_cp_count(si)
39a53e0c 1402#define stat_inc_call_count(si)
dcdfff65
JK
1403#define stat_inc_bggc_count(si)
1404#define stat_inc_dirty_dir(sbi)
1405#define stat_dec_dirty_dir(sbi)
1406#define stat_inc_total_hit(sb)
1407#define stat_inc_read_hit(sb)
0dbdc2ae
JK
1408#define stat_inc_inline_inode(inode)
1409#define stat_dec_inline_inode(inode)
dcdfff65
JK
1410#define stat_inc_seg_type(sbi, curseg)
1411#define stat_inc_block_count(sbi, curseg)
39a53e0c
JK
1412#define stat_inc_seg_count(si, type)
1413#define stat_inc_tot_blk_count(si, blks)
1414#define stat_inc_data_blk_count(si, blks)
1415#define stat_inc_node_blk_count(sbi, blks)
1416
1417static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1418static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
6e6093a8 1419static inline void __init f2fs_create_root_stats(void) { }
4589d25d 1420static inline void f2fs_destroy_root_stats(void) { }
39a53e0c
JK
1421#endif
1422
1423extern const struct file_operations f2fs_dir_operations;
1424extern const struct file_operations f2fs_file_operations;
1425extern const struct inode_operations f2fs_file_inode_operations;
1426extern const struct address_space_operations f2fs_dblock_aops;
1427extern const struct address_space_operations f2fs_node_aops;
1428extern const struct address_space_operations f2fs_meta_aops;
1429extern const struct inode_operations f2fs_dir_inode_operations;
1430extern const struct inode_operations f2fs_symlink_inode_operations;
1431extern const struct inode_operations f2fs_special_inode_operations;
1001b347 1432
e18c65b2
HL
1433/*
1434 * inline.c
1435 */
e18c65b2
HL
1436bool f2fs_may_inline(struct inode *);
1437int f2fs_read_inline_data(struct inode *, struct page *);
9e09fc85 1438int f2fs_convert_inline_data(struct inode *, pgoff_t);
e18c65b2 1439int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
8aa6f1c5 1440void truncate_inline_data(struct inode *, u64);
1e1bb4ba 1441int recover_inline_data(struct inode *, struct page *);
39a53e0c 1442#endif