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Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002 * 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>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090017#include <linux/slab.h>
18#include <linux/crc32.h>
19#include <linux/magic.h>
Jaegeuk Kimc2d715d2013-08-08 15:56:49 +090020#include <linux/kobject.h>
Gu Zheng7bd59382013-10-22 14:52:26 +080021#include <linux/sched.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090022
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090023#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070024#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090025#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090026#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070027#define f2fs_bug_on(sbi, condition) \
28 do { \
29 if (unlikely(condition)) { \
30 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080031 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070032 } \
33 } while (0)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090034#define f2fs_down_write(x, y) down_write(x)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090035#endif
36
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090037/*
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
Jaegeuk Kim444c5802013-08-08 15:16:22 +090047#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +080048#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +080049#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
50#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
51#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -070052#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +080053#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090054
55#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
56#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
57#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
58
59#define ver_after(a, b) (typecheck(unsigned long long, a) && \
60 typecheck(unsigned long long, b) && \
61 ((long long)((a) - (b)) > 0))
62
Jaegeuk Kima9841c42013-05-24 12:41:04 +090063typedef u32 block_t; /*
64 * should not change u32, since it is the on-disk block
65 * address format, __le32.
66 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090067typedef u32 nid_t;
68
69struct f2fs_mount_info {
70 unsigned int opt;
71};
72
Jaegeuk Kimcde4de12015-04-20 13:57:51 -070073#define F2FS_FEATURE_ENCRYPT 0x0001
74
Jaegeuk Kim76f105a2015-04-13 15:10:36 -070075#define F2FS_HAS_FEATURE(sb, mask) \
76 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
77#define F2FS_SET_FEATURE(sb, mask) \
78 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
79#define F2FS_CLEAR_FEATURE(sb, mask) \
80 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
81
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090082#define CRCPOLY_LE 0xedb88320
83
84static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090085{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090086 unsigned char *p = (unsigned char *)buf;
87 __u32 crc = F2FS_SUPER_MAGIC;
88 int i;
89
90 while (len--) {
91 crc ^= *p++;
92 for (i = 0; i < 8; i++)
93 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
94 }
95 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090096}
97
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090098static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090099{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900100 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900101}
102
103/*
104 * For checkpoint manager
105 */
106enum {
107 NAT_BITMAP,
108 SIT_BITMAP
109};
110
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700111enum {
112 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800113 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700114 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700115 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700116 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700117};
118
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800119#define DEF_BATCHED_TRIM_SECTIONS 32
120#define BATCHED_TRIM_SEGMENTS(sbi) \
121 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700122#define BATCHED_TRIM_BLOCKS(sbi) \
123 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800124
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700125struct cp_control {
126 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700127 __u64 trim_start;
128 __u64 trim_end;
129 __u64 trim_minlen;
130 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700131};
132
Chao Yu662befd2014-02-07 16:11:53 +0800133/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800134 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800135 */
136enum {
137 META_CP,
138 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800139 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700140 META_SSA,
141 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800142};
143
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700144/* for the list of ino */
145enum {
146 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700147 APPEND_INO, /* for append ino list */
148 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700149 MAX_INO_ENTRY, /* max. list */
150};
151
152struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900153 struct list_head list; /* list head */
154 nid_t ino; /* inode number */
155};
156
Chao Yu06292072014-12-29 15:56:18 +0800157/*
158 * for the list of directory inodes or gc inodes.
159 * NOTE: there are two slab users for this structure, if we add/modify/delete
160 * fields in structure for one of slab users, it may affect fields or size of
161 * other one, in this condition, it's better to split both of slab and related
162 * data structure.
163 */
164struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900165 struct list_head list; /* list head */
166 struct inode *inode; /* vfs inode pointer */
167};
168
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900169/* for the list of blockaddresses to be discarded */
170struct discard_entry {
171 struct list_head list; /* list head */
172 block_t blkaddr; /* block address to be discarded */
173 int len; /* # of consecutive blocks of the discard */
174};
175
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900176/* for the list of fsync inodes, used only during recovery */
177struct fsync_inode_entry {
178 struct list_head list; /* list head */
179 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700180 block_t blkaddr; /* block address locating the last fsync */
181 block_t last_dentry; /* block address locating the last dentry */
182 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900183};
184
185#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
186#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
187
188#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
189#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
190#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
191#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
192
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700193#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
194#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
195
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900196static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
197{
198 int before = nats_in_cursum(rs);
199 rs->n_nats = cpu_to_le16(before + i);
200 return before;
201}
202
203static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
204{
205 int before = sits_in_cursum(rs);
206 rs->n_sits = cpu_to_le16(before + i);
207 return before;
208}
209
Chao Yu184a5cd2014-09-04 18:13:01 +0800210static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
211 int type)
212{
213 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700214 return size <= MAX_NAT_JENTRIES(sum);
215 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800216}
217
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900218/*
Namjae Jeone9750822013-02-04 23:41:41 +0900219 * ioctl commands
220 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700221#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
222#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800223#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700224
225#define F2FS_IOCTL_MAGIC 0xf5
226#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
227#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700228#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800229#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
230#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Namjae Jeone9750822013-02-04 23:41:41 +0900231
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700232#define F2FS_IOC_SET_ENCRYPTION_POLICY \
233 _IOR('f', 19, struct f2fs_encryption_policy)
234#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
235 _IOW('f', 20, __u8[16])
236#define F2FS_IOC_GET_ENCRYPTION_POLICY \
237 _IOW('f', 21, struct f2fs_encryption_policy)
238
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800239/*
240 * should be same as XFS_IOC_GOINGDOWN.
241 * Flags for going down operation used by FS_IOC_GOINGDOWN
242 */
243#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
244#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
245#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
246#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
247
Namjae Jeone9750822013-02-04 23:41:41 +0900248#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
249/*
250 * ioctl commands in 32 bit emulation
251 */
252#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
253#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
254#endif
255
256/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900257 * For INODE and NODE manager
258 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700259/* for directory operations */
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -0700260struct f2fs_str {
261 unsigned char *name;
262 u32 len;
263};
264
265struct f2fs_filename {
266 const struct qstr *usr_fname;
267 struct f2fs_str disk_name;
268 f2fs_hash_t hash;
269#ifdef CONFIG_F2FS_FS_ENCRYPTION
270 struct f2fs_str crypto_buf;
271#endif
272};
273
274#define FSTR_INIT(n, l) { .name = n, .len = l }
275#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
276#define fname_name(p) ((p)->disk_name.name)
277#define fname_len(p) ((p)->disk_name.len)
278
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700279struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700280 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700281 const void *bitmap;
282 struct f2fs_dir_entry *dentry;
283 __u8 (*filename)[F2FS_SLOT_LEN];
284 int max;
285};
286
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700287static inline void make_dentry_ptr(struct inode *inode,
288 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700289{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700290 d->inode = inode;
291
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700292 if (type == 1) {
293 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
294 d->max = NR_DENTRY_IN_BLOCK;
295 d->bitmap = &t->dentry_bitmap;
296 d->dentry = t->dentry;
297 d->filename = t->filename;
298 } else {
299 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
300 d->max = NR_INLINE_DENTRY;
301 d->bitmap = &t->dentry_bitmap;
302 d->dentry = t->dentry;
303 d->filename = t->filename;
304 }
305}
306
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900307/*
308 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
309 * as its node offset to distinguish from index node blocks.
310 * But some bits are used to mark the node block.
311 */
312#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
313 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900314enum {
315 ALLOC_NODE, /* allocate a new node page if needed */
316 LOOKUP_NODE, /* look up a node without readahead */
317 LOOKUP_NODE_RA, /*
318 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800319 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900320 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900321};
322
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900323#define F2FS_LINK_MAX 32000 /* maximum link count per file */
324
Chao Yu817202d92014-04-28 17:59:43 +0800325#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
326
Chao Yu13054c52015-02-05 17:52:58 +0800327/* vector size for gang look-up from extent cache that consists of radix tree */
328#define EXT_TREE_VEC_SIZE 64
329
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900330/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800331#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
332
333/* number of extent info in extent cache we try to shrink */
334#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900335
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900336struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800337 unsigned int fofs; /* start offset in a file */
338 u32 blk; /* start block address of the extent */
339 unsigned int len; /* length of the extent */
340};
341
342struct extent_node {
343 struct rb_node rb_node; /* rb node located in rb-tree */
344 struct list_head list; /* node in global extent list of sbi */
345 struct extent_info ei; /* extent info */
346};
347
348struct extent_tree {
349 nid_t ino; /* inode number */
350 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800351 struct extent_node *cached_en; /* recently accessed extent node */
Chao Yu13054c52015-02-05 17:52:58 +0800352 rwlock_t lock; /* protect extent info rb-tree */
353 atomic_t refcount; /* reference count of rb-tree */
354 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900355};
356
357/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700358 * This structure is taken from ext4_map_blocks.
359 *
360 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
361 */
362#define F2FS_MAP_NEW (1 << BH_New)
363#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700364#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
365#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
366 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700367
368struct f2fs_map_blocks {
369 block_t m_pblk;
370 block_t m_lblk;
371 unsigned int m_len;
372 unsigned int m_flags;
373};
374
375/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900376 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
377 */
378#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900379#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700380#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700381#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900382
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700383#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
384#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
385#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
386#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
387#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
388#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700389#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
390#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
391#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700392#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
393#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700394
395/* Encryption algorithms */
396#define F2FS_ENCRYPTION_MODE_INVALID 0
397#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
398#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
399#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
400#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700401
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700402#include "f2fs_crypto.h"
403
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900404#define DEF_DIR_LEVEL 0
405
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900406struct f2fs_inode_info {
407 struct inode vfs_inode; /* serve a vfs inode */
408 unsigned long i_flags; /* keep an inode flags for ioctl */
409 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900410 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900411 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900412 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900413 umode_t i_acl_mode; /* keep file acl mode temporarily */
414
415 /* Use below internally in f2fs*/
416 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900417 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700418 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900419 f2fs_hash_t chash; /* hash value of given file name */
420 unsigned int clevel; /* maximum level of given file name */
421 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900422 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900423 struct extent_info ext; /* in-memory extent cache entry */
Chao Yu0c872e22015-02-05 17:46:29 +0800424 rwlock_t ext_lock; /* rwlock for single extent cache */
Chao Yu06292072014-12-29 15:56:18 +0800425 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700426
Jaegeuk Kim34ba94b2014-10-09 13:19:53 -0700427 struct radix_tree_root inmem_root; /* radix tree for inmem pages */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700428 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
429 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700430
431#ifdef CONFIG_F2FS_FS_ENCRYPTION
432 /* Encryption params */
433 struct f2fs_crypt_info *i_crypt_info;
434#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900435};
436
437static inline void get_extent_info(struct extent_info *ext,
438 struct f2fs_extent i_ext)
439{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900440 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800441 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900442 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900443}
444
445static inline void set_raw_extent(struct extent_info *ext,
446 struct f2fs_extent *i_ext)
447{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900448 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800449 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900450 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900451}
452
Chao Yu429511c2015-02-05 17:54:31 +0800453static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
454 u32 blk, unsigned int len)
455{
456 ei->fofs = fofs;
457 ei->blk = blk;
458 ei->len = len;
459}
460
Chao Yu0bdee482015-03-19 19:27:51 +0800461static inline bool __is_extent_same(struct extent_info *ei1,
462 struct extent_info *ei2)
463{
464 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
465 ei1->len == ei2->len);
466}
467
Chao Yu429511c2015-02-05 17:54:31 +0800468static inline bool __is_extent_mergeable(struct extent_info *back,
469 struct extent_info *front)
470{
471 return (back->fofs + back->len == front->fofs &&
472 back->blk + back->len == front->blk);
473}
474
475static inline bool __is_back_mergeable(struct extent_info *cur,
476 struct extent_info *back)
477{
478 return __is_extent_mergeable(back, cur);
479}
480
481static inline bool __is_front_mergeable(struct extent_info *cur,
482 struct extent_info *front)
483{
484 return __is_extent_mergeable(cur, front);
485}
486
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900487struct f2fs_nm_info {
488 block_t nat_blkaddr; /* base disk address of NAT */
489 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900490 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900491 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900492 unsigned int ram_thresh; /* control the memory footprint */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900493
494 /* NAT cache management */
495 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700496 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800497 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900498 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700499 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800500 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900501
502 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900503 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900504 struct list_head free_nid_list; /* a list for free nids */
505 spinlock_t free_nid_list_lock; /* protect free nid list */
506 unsigned int fcnt; /* the number of free node id */
507 struct mutex build_lock; /* lock for build free nids */
508
509 /* for checkpoint */
510 char *nat_bitmap; /* NAT bitmap pointer */
511 int bitmap_size; /* bitmap size */
512};
513
514/*
515 * this structure is used as one of function parameters.
516 * all the information are dedicated to a given direct node block determined
517 * by the data offset in a file.
518 */
519struct dnode_of_data {
520 struct inode *inode; /* vfs inode pointer */
521 struct page *inode_page; /* its inode page, NULL is possible */
522 struct page *node_page; /* cached direct node page */
523 nid_t nid; /* node id of the direct node block */
524 unsigned int ofs_in_node; /* data offset in the node page */
525 bool inode_page_locked; /* inode page is locked or not */
526 block_t data_blkaddr; /* block address of the node block */
527};
528
529static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
530 struct page *ipage, struct page *npage, nid_t nid)
531{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900532 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900533 dn->inode = inode;
534 dn->inode_page = ipage;
535 dn->node_page = npage;
536 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900537}
538
539/*
540 * For SIT manager
541 *
542 * By default, there are 6 active log areas across the whole main area.
543 * When considering hot and cold data separation to reduce cleaning overhead,
544 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
545 * respectively.
546 * In the current design, you should not change the numbers intentionally.
547 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
548 * logs individually according to the underlying devices. (default: 6)
549 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
550 * data and 8 for node logs.
551 */
552#define NR_CURSEG_DATA_TYPE (3)
553#define NR_CURSEG_NODE_TYPE (3)
554#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
555
556enum {
557 CURSEG_HOT_DATA = 0, /* directory entry blocks */
558 CURSEG_WARM_DATA, /* data blocks */
559 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
560 CURSEG_HOT_NODE, /* direct node blocks of directory files */
561 CURSEG_WARM_NODE, /* direct node blocks of normal files */
562 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800563 NO_CHECK_TYPE,
564 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900565};
566
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900567struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900568 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800569 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900570 int ret;
571};
572
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800573struct flush_cmd_control {
574 struct task_struct *f2fs_issue_flush; /* flush thread */
575 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800576 struct llist_head issue_list; /* list for command issue */
577 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800578};
579
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900580struct f2fs_sm_info {
581 struct sit_info *sit_info; /* whole segment information */
582 struct free_segmap_info *free_info; /* free segment information */
583 struct dirty_seglist_info *dirty_info; /* dirty segment information */
584 struct curseg_info *curseg_array; /* active segment information */
585
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900586 block_t seg0_blkaddr; /* block address of 0'th segment */
587 block_t main_blkaddr; /* start block address of main area */
588 block_t ssa_blkaddr; /* start block address of SSA area */
589
590 unsigned int segment_count; /* total # of segments */
591 unsigned int main_segments; /* # of segments in main area */
592 unsigned int reserved_segments; /* # of reserved segments */
593 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900594
595 /* a threshold to reclaim prefree segments */
596 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900597
598 /* for small discard management */
599 struct list_head discard_list; /* 4KB discard list */
600 int nr_discards; /* # of discards in the list */
601 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900602
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800603 /* for batched trimming */
604 unsigned int trim_sections; /* # of sections to trim */
605
Chao Yu184a5cd2014-09-04 18:13:01 +0800606 struct list_head sit_entry_set; /* sit entry set list */
607
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900608 unsigned int ipu_policy; /* in-place-update policy */
609 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700610 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900611
612 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800613 struct flush_cmd_control *cmd_control_info;
614
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900615};
616
617/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900618 * For superblock
619 */
620/*
621 * COUNT_TYPE for monitoring
622 *
623 * f2fs monitors the number of several block types such as on-writeback,
624 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
625 */
626enum count_type {
627 F2FS_WRITEBACK,
628 F2FS_DIRTY_DENTS,
629 F2FS_DIRTY_NODES,
630 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800631 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900632 NR_COUNT_TYPE,
633};
634
635/*
arter97e1c42042014-08-06 23:22:50 +0900636 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900637 * The available types are:
638 * DATA User data pages. It operates as async mode.
639 * NODE Node pages. It operates as async mode.
640 * META FS metadata pages such as SIT, NAT, CP.
641 * NR_PAGE_TYPE The number of page types.
642 * META_FLUSH Make sure the previous pages are written
643 * with waiting the bio's completion
644 * ... Only can be used with META.
645 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900646#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900647enum page_type {
648 DATA,
649 NODE,
650 META,
651 NR_PAGE_TYPE,
652 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700653 INMEM, /* the below types are used by tracepoints only. */
654 INMEM_DROP,
655 IPU,
656 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900657};
658
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900659struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700660 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800661 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
662 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800663 block_t blk_addr; /* block address to be written */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700664 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700665 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900666};
667
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900668#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900669struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900670 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900671 struct bio *bio; /* bios to merge */
672 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900673 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800674 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900675};
676
Chao Yu67298802014-11-18 11:18:36 +0800677/* for inner inode cache management */
678struct inode_management {
679 struct radix_tree_root ino_root; /* ino entry array */
680 spinlock_t ino_lock; /* for ino entry lock */
681 struct list_head ino_list; /* inode list head */
682 unsigned long ino_num; /* number of entries */
683};
684
Chao Yucaf00472015-01-28 17:48:42 +0800685/* For s_flag in struct f2fs_sb_info */
686enum {
687 SBI_IS_DIRTY, /* dirty flag for checkpoint */
688 SBI_IS_CLOSE, /* specify unmounting */
689 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
690 SBI_POR_DOING, /* recovery is doing or not */
691};
692
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900693struct f2fs_sb_info {
694 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900695 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900696 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
697 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800698 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900699
700 /* for node-related operations */
701 struct f2fs_nm_info *nm_info; /* node manager */
702 struct inode *node_inode; /* cache node blocks */
703
704 /* for segment-related operations */
705 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900706
707 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800708 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900709 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900710
711 /* for checkpoint */
712 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
713 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900714 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800715 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800716 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim5463e7c2015-04-21 10:40:54 -0700717 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900718 wait_queue_head_t cp_wait;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900719
Chao Yu67298802014-11-18 11:18:36 +0800720 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700721
722 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800723 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900724
725 /* for directory inode management */
726 struct list_head dir_inode_list; /* dir inode list */
727 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900728
Chao Yu13054c52015-02-05 17:52:58 +0800729 /* for extent tree cache */
730 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
731 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
732 struct list_head extent_list; /* lru list for shrinker */
733 spinlock_t extent_lock; /* locking extent lru list */
734 int total_ext_tree; /* extent tree count */
735 atomic_t total_ext_node; /* extent info count */
736
arter97e1c42042014-08-06 23:22:50 +0900737 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900738 unsigned int log_sectors_per_block; /* log2 sectors per block */
739 unsigned int log_blocksize; /* log2 block size */
740 unsigned int blocksize; /* block size */
741 unsigned int root_ino_num; /* root inode number*/
742 unsigned int node_ino_num; /* node inode number*/
743 unsigned int meta_ino_num; /* meta inode number*/
744 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
745 unsigned int blocks_per_seg; /* blocks per segment */
746 unsigned int segs_per_sec; /* segments per section */
747 unsigned int secs_per_zone; /* sections per zone */
748 unsigned int total_sections; /* total section count */
749 unsigned int total_node_count; /* total node block count */
750 unsigned int total_valid_node_count; /* valid node block count */
751 unsigned int total_valid_inode_count; /* valid inode count */
752 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900753 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900754
755 block_t user_block_count; /* # of user blocks */
756 block_t total_valid_block_count; /* # of valid blocks */
757 block_t alloc_valid_block_count; /* # of allocated blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700758 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900759 block_t last_valid_block_count; /* for recovery */
760 u32 s_next_generation; /* for NFS support */
761 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
762
763 struct f2fs_mount_info mount_opt; /* mount options */
764
765 /* for cleaning operations */
766 struct mutex gc_mutex; /* mutex for GC */
767 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900768 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900769
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900770 /* maximum # of trials to find a victim segment for SSR and GC */
771 unsigned int max_victim_search;
772
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900773 /*
774 * for stat information.
775 * one is for the LFS mode, and the other is for the SSR mode.
776 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900777#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900778 struct f2fs_stat_info *stat_info; /* FS status information */
779 unsigned int segment_count[2]; /* # of allocated segments */
780 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900781 atomic_t inplace_count; /* # of inplace update */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900782 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
Chao Yu03e14d52014-12-08 19:08:20 +0800783 atomic_t inline_inode; /* # of inline_data inodes */
784 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900785 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900786 unsigned int n_dirty_dirs; /* # of dir inodes */
787#endif
788 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900789 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900790
791 /* For sysfs suppport */
792 struct kobject s_kobj;
793 struct completion s_kobj_unregister;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900794};
795
796/*
797 * Inline functions
798 */
799static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
800{
801 return container_of(inode, struct f2fs_inode_info, vfs_inode);
802}
803
804static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
805{
806 return sb->s_fs_info;
807}
808
Jaegeuk Kim40813632014-09-02 15:31:18 -0700809static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
810{
811 return F2FS_SB(inode->i_sb);
812}
813
814static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
815{
816 return F2FS_I_SB(mapping->host);
817}
818
819static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
820{
821 return F2FS_M_SB(page->mapping);
822}
823
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900824static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
825{
826 return (struct f2fs_super_block *)(sbi->raw_super);
827}
828
829static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
830{
831 return (struct f2fs_checkpoint *)(sbi->ckpt);
832}
833
Gu Zheng45590712013-07-15 17:57:38 +0800834static inline struct f2fs_node *F2FS_NODE(struct page *page)
835{
836 return (struct f2fs_node *)page_address(page);
837}
838
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900839static inline struct f2fs_inode *F2FS_INODE(struct page *page)
840{
841 return &((struct f2fs_node *)page_address(page))->i;
842}
843
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900844static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
845{
846 return (struct f2fs_nm_info *)(sbi->nm_info);
847}
848
849static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
850{
851 return (struct f2fs_sm_info *)(sbi->sm_info);
852}
853
854static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
855{
856 return (struct sit_info *)(SM_I(sbi)->sit_info);
857}
858
859static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
860{
861 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
862}
863
864static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
865{
866 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
867}
868
Gu Zheng9df27d92014-01-20 18:37:04 +0800869static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
870{
871 return sbi->meta_inode->i_mapping;
872}
873
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900874static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
875{
876 return sbi->node_inode->i_mapping;
877}
878
Chao Yucaf00472015-01-28 17:48:42 +0800879static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900880{
Chao Yucaf00472015-01-28 17:48:42 +0800881 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900882}
883
Chao Yucaf00472015-01-28 17:48:42 +0800884static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900885{
Chao Yucaf00472015-01-28 17:48:42 +0800886 sbi->s_flag |= (0x01 << type);
887}
888
889static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
890{
891 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900892}
893
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900894static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
895{
896 return le64_to_cpu(cp->checkpoint_ver);
897}
898
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900899static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
900{
901 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
902 return ckpt_flags & f;
903}
904
905static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
906{
907 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
908 ckpt_flags |= f;
909 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
910}
911
912static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
913{
914 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
915 ckpt_flags &= (~f);
916 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
917}
918
Gu Zhenge4795562013-09-27 18:08:30 +0800919static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900920{
Gu Zhenge4795562013-09-27 18:08:30 +0800921 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900922}
923
Gu Zhenge4795562013-09-27 18:08:30 +0800924static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900925{
Gu Zhenge4795562013-09-27 18:08:30 +0800926 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900927}
928
Gu Zhenge4795562013-09-27 18:08:30 +0800929static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900930{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900931 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900932}
933
Gu Zhenge4795562013-09-27 18:08:30 +0800934static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900935{
Gu Zhenge4795562013-09-27 18:08:30 +0800936 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900937}
938
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800939static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
940{
941 int reason = CP_SYNC;
942
943 if (test_opt(sbi, FASTBOOT))
944 reason = CP_FASTBOOT;
945 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
946 reason = CP_UMOUNT;
947 return reason;
948}
949
950static inline bool __remain_node_summaries(int reason)
951{
952 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
953}
954
955static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
956{
957 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
958 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
959}
960
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900961/*
962 * Check whether the given nid is within node id range.
963 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900964static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900965{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800966 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
967 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800968 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +0900969 return -EINVAL;
970 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900971}
972
973#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
974
975/*
976 * Check whether the inode has blocks or not
977 */
978static inline int F2FS_HAS_BLOCKS(struct inode *inode)
979{
980 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -0600981 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900982 else
Chris Fries6c311ec2014-01-17 14:44:39 -0600983 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900984}
985
Chao Yu4bc8e9b2014-03-17 16:35:06 +0800986static inline bool f2fs_has_xattr_block(unsigned int ofs)
987{
988 return ofs == XATTR_NODE_OFFSET;
989}
990
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900991static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
992 struct inode *inode, blkcnt_t count)
993{
994 block_t valid_block_count;
995
996 spin_lock(&sbi->stat_lock);
997 valid_block_count =
998 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +0800999 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001000 spin_unlock(&sbi->stat_lock);
1001 return false;
1002 }
1003 inode->i_blocks += count;
1004 sbi->total_valid_block_count = valid_block_count;
1005 sbi->alloc_valid_block_count += (block_t)count;
1006 spin_unlock(&sbi->stat_lock);
1007 return true;
1008}
1009
Gu Zhengda19b0d2013-11-19 18:03:27 +08001010static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001011 struct inode *inode,
1012 blkcnt_t count)
1013{
1014 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001015 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1016 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001017 inode->i_blocks -= count;
1018 sbi->total_valid_block_count -= (block_t)count;
1019 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001020}
1021
1022static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1023{
1024 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001025 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001026}
1027
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001028static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001029{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001030 atomic_inc(&F2FS_I(inode)->dirty_pages);
1031 if (S_ISDIR(inode->i_mode))
1032 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001033}
1034
1035static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1036{
1037 atomic_dec(&sbi->nr_pages[count_type]);
1038}
1039
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001040static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001041{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001042 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001043 return;
1044
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001045 atomic_dec(&F2FS_I(inode)->dirty_pages);
1046
1047 if (S_ISDIR(inode->i_mode))
1048 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001049}
1050
1051static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1052{
1053 return atomic_read(&sbi->nr_pages[count_type]);
1054}
1055
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001056static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001057{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001058 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001059}
1060
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001061static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1062{
1063 unsigned int pages_per_sec = sbi->segs_per_sec *
1064 (1 << sbi->log_blocks_per_seg);
1065 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1066 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1067}
1068
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001069static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1070{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001071 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001072}
1073
1074static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1075{
1076 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1077
1078 /* return NAT or SIT bitmap */
1079 if (flag == NAT_BITMAP)
1080 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1081 else if (flag == SIT_BITMAP)
1082 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1083
1084 return 0;
1085}
1086
Wanpeng Li55141482015-02-26 07:57:20 +08001087static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1088{
1089 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1090}
1091
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001092static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1093{
1094 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001095 int offset;
1096
Wanpeng Li55141482015-02-26 07:57:20 +08001097 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001098 if (flag == NAT_BITMAP)
1099 return &ckpt->sit_nat_version_bitmap;
1100 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001101 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001102 } else {
1103 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001104 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001105 return &ckpt->sit_nat_version_bitmap + offset;
1106 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001107}
1108
1109static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1110{
1111 block_t start_addr;
1112 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001113 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001114
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001115 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001116
1117 /*
1118 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001119 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001120 */
1121 if (!(ckpt_version & 1))
1122 start_addr += sbi->blocks_per_seg;
1123
1124 return start_addr;
1125}
1126
1127static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1128{
1129 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1130}
1131
1132static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001133 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001134{
1135 block_t valid_block_count;
1136 unsigned int valid_node_count;
1137
1138 spin_lock(&sbi->stat_lock);
1139
Gu Zhengef86d702013-11-19 18:03:38 +08001140 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001141 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001142 spin_unlock(&sbi->stat_lock);
1143 return false;
1144 }
1145
Gu Zhengef86d702013-11-19 18:03:38 +08001146 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001147 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001148 spin_unlock(&sbi->stat_lock);
1149 return false;
1150 }
1151
1152 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001153 inode->i_blocks++;
1154
1155 sbi->alloc_valid_block_count++;
1156 sbi->total_valid_node_count++;
1157 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001158 spin_unlock(&sbi->stat_lock);
1159
1160 return true;
1161}
1162
1163static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001164 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001165{
1166 spin_lock(&sbi->stat_lock);
1167
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001168 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1169 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1170 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001171
Gu Zhengef86d702013-11-19 18:03:38 +08001172 inode->i_blocks--;
1173 sbi->total_valid_node_count--;
1174 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001175
1176 spin_unlock(&sbi->stat_lock);
1177}
1178
1179static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1180{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001181 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001182}
1183
1184static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1185{
1186 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001187 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001188 sbi->total_valid_inode_count++;
1189 spin_unlock(&sbi->stat_lock);
1190}
1191
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001192static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001193{
1194 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001195 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001196 sbi->total_valid_inode_count--;
1197 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001198}
1199
1200static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1201{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001202 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001203}
1204
1205static inline void f2fs_put_page(struct page *page, int unlock)
1206{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001207 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001208 return;
1209
1210 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001211 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001212 unlock_page(page);
1213 }
1214 page_cache_release(page);
1215}
1216
1217static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1218{
1219 if (dn->node_page)
1220 f2fs_put_page(dn->node_page, 1);
1221 if (dn->inode_page && dn->node_page != dn->inode_page)
1222 f2fs_put_page(dn->inode_page, 0);
1223 dn->node_page = NULL;
1224 dn->inode_page = NULL;
1225}
1226
1227static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001228 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001229{
Gu Zhenge8512d22014-03-07 18:43:28 +08001230 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001231}
1232
Gu Zheng7bd59382013-10-22 14:52:26 +08001233static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1234 gfp_t flags)
1235{
1236 void *entry;
1237retry:
1238 entry = kmem_cache_alloc(cachep, flags);
1239 if (!entry) {
1240 cond_resched();
1241 goto retry;
1242 }
1243
1244 return entry;
1245}
1246
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001247static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1248 unsigned long index, void *item)
1249{
1250 while (radix_tree_insert(root, index, item))
1251 cond_resched();
1252}
1253
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001254#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1255
1256static inline bool IS_INODE(struct page *page)
1257{
Gu Zheng45590712013-07-15 17:57:38 +08001258 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001259 return RAW_IS_INODE(p);
1260}
1261
1262static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1263{
1264 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1265}
1266
1267static inline block_t datablock_addr(struct page *node_page,
1268 unsigned int offset)
1269{
1270 struct f2fs_node *raw_node;
1271 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001272 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001273 addr_array = blkaddr_in_node(raw_node);
1274 return le32_to_cpu(addr_array[offset]);
1275}
1276
1277static inline int f2fs_test_bit(unsigned int nr, char *addr)
1278{
1279 int mask;
1280
1281 addr += (nr >> 3);
1282 mask = 1 << (7 - (nr & 0x07));
1283 return mask & *addr;
1284}
1285
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001286static inline void f2fs_set_bit(unsigned int nr, char *addr)
1287{
1288 int mask;
1289
1290 addr += (nr >> 3);
1291 mask = 1 << (7 - (nr & 0x07));
1292 *addr |= mask;
1293}
1294
1295static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1296{
1297 int mask;
1298
1299 addr += (nr >> 3);
1300 mask = 1 << (7 - (nr & 0x07));
1301 *addr &= ~mask;
1302}
1303
Gu Zheng52aca072014-10-20 17:45:51 +08001304static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001305{
1306 int mask;
1307 int ret;
1308
1309 addr += (nr >> 3);
1310 mask = 1 << (7 - (nr & 0x07));
1311 ret = mask & *addr;
1312 *addr |= mask;
1313 return ret;
1314}
1315
Gu Zheng52aca072014-10-20 17:45:51 +08001316static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001317{
1318 int mask;
1319 int ret;
1320
1321 addr += (nr >> 3);
1322 mask = 1 << (7 - (nr & 0x07));
1323 ret = mask & *addr;
1324 *addr &= ~mask;
1325 return ret;
1326}
1327
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001328static inline void f2fs_change_bit(unsigned int nr, char *addr)
1329{
1330 int mask;
1331
1332 addr += (nr >> 3);
1333 mask = 1 << (7 - (nr & 0x07));
1334 *addr ^= mask;
1335}
1336
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001337/* used for f2fs_inode_info->flags */
1338enum {
1339 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001340 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001341 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001342 FI_INC_LINK, /* need to increment i_nlink */
1343 FI_ACL_MODE, /* indicate acl mode */
1344 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001345 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001346 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001347 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001348 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001349 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001350 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001351 FI_APPEND_WRITE, /* inode has appended data */
1352 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001353 FI_NEED_IPU, /* used for ipu per file */
1354 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001355 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001356 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001357 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001358 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001359 FI_INLINE_DOTS, /* indicate inline dot dentries */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001360};
1361
1362static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1363{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001364 if (!test_bit(flag, &fi->flags))
1365 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001366}
1367
1368static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1369{
1370 return test_bit(flag, &fi->flags);
1371}
1372
1373static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1374{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001375 if (test_bit(flag, &fi->flags))
1376 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001377}
1378
1379static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1380{
1381 fi->i_acl_mode = mode;
1382 set_inode_flag(fi, FI_ACL_MODE);
1383}
1384
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001385static inline void get_inline_info(struct f2fs_inode_info *fi,
1386 struct f2fs_inode *ri)
1387{
1388 if (ri->i_inline & F2FS_INLINE_XATTR)
1389 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001390 if (ri->i_inline & F2FS_INLINE_DATA)
1391 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001392 if (ri->i_inline & F2FS_INLINE_DENTRY)
1393 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001394 if (ri->i_inline & F2FS_DATA_EXIST)
1395 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001396 if (ri->i_inline & F2FS_INLINE_DOTS)
1397 set_inode_flag(fi, FI_INLINE_DOTS);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001398}
1399
1400static inline void set_raw_inline(struct f2fs_inode_info *fi,
1401 struct f2fs_inode *ri)
1402{
1403 ri->i_inline = 0;
1404
1405 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1406 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001407 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1408 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001409 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1410 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001411 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1412 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001413 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1414 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001415}
1416
Chao Yu987c7c32014-03-12 15:59:03 +08001417static inline int f2fs_has_inline_xattr(struct inode *inode)
1418{
1419 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1420}
1421
Jaegeuk Kimde936532013-08-12 21:08:03 +09001422static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1423{
Chao Yu987c7c32014-03-12 15:59:03 +08001424 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001425 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1426 return DEF_ADDRS_PER_INODE;
1427}
1428
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001429static inline void *inline_xattr_addr(struct page *page)
1430{
Chao Yu695fd1e2014-02-27 19:52:21 +08001431 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001432 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1433 F2FS_INLINE_XATTR_ADDRS]);
1434}
1435
1436static inline int inline_xattr_size(struct inode *inode)
1437{
Chao Yu987c7c32014-03-12 15:59:03 +08001438 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001439 return F2FS_INLINE_XATTR_ADDRS << 2;
1440 else
1441 return 0;
1442}
1443
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001444static inline int f2fs_has_inline_data(struct inode *inode)
1445{
1446 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1447}
1448
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001449static inline void f2fs_clear_inline_inode(struct inode *inode)
1450{
1451 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1452 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1453}
1454
1455static inline int f2fs_exist_data(struct inode *inode)
1456{
1457 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1458}
1459
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001460static inline int f2fs_has_inline_dots(struct inode *inode)
1461{
1462 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1463}
1464
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001465static inline bool f2fs_is_atomic_file(struct inode *inode)
1466{
1467 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1468}
1469
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001470static inline bool f2fs_is_volatile_file(struct inode *inode)
1471{
1472 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1473}
1474
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001475static inline bool f2fs_is_first_block_written(struct inode *inode)
1476{
1477 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1478}
1479
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001480static inline bool f2fs_is_drop_cache(struct inode *inode)
1481{
1482 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1483}
1484
Huajun Li1001b342013-11-10 23:13:16 +08001485static inline void *inline_data_addr(struct page *page)
1486{
Chao Yu695fd1e2014-02-27 19:52:21 +08001487 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001488 return (void *)&(ri->i_addr[1]);
1489}
1490
Chao Yu34d67de2014-09-24 18:15:19 +08001491static inline int f2fs_has_inline_dentry(struct inode *inode)
1492{
1493 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1494}
1495
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001496static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1497{
1498 if (!f2fs_has_inline_dentry(dir))
1499 kunmap(page);
1500}
1501
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001502static inline int is_file(struct inode *inode, int type)
1503{
1504 return F2FS_I(inode)->i_advise & type;
1505}
1506
1507static inline void set_file(struct inode *inode, int type)
1508{
1509 F2FS_I(inode)->i_advise |= type;
1510}
1511
1512static inline void clear_file(struct inode *inode, int type)
1513{
1514 F2FS_I(inode)->i_advise &= ~type;
1515}
1516
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001517static inline int f2fs_readonly(struct super_block *sb)
1518{
1519 return sb->s_flags & MS_RDONLY;
1520}
1521
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001522static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1523{
1524 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1525}
1526
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001527static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1528{
1529 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1530 sbi->sb->s_flags |= MS_RDONLY;
1531}
1532
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001533static inline bool is_dot_dotdot(const struct qstr *str)
1534{
1535 if (str->len == 1 && str->name[0] == '.')
1536 return true;
1537
1538 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1539 return true;
1540
1541 return false;
1542}
1543
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001544#define get_inode_mode(i) \
1545 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1546 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1547
Chao Yu267378d2014-04-23 14:10:24 +08001548/* get offset of first page in next direct node */
1549#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1550 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1551 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1552 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1553
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001554/*
1555 * file.c
1556 */
1557int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1558void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001559int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001560void f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001561int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001562int f2fs_setattr(struct dentry *, struct iattr *);
1563int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001564int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001565long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001566long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001567
1568/*
1569 * inode.c
1570 */
1571void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001572struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001573int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001574void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001575void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001576int f2fs_write_inode(struct inode *, struct writeback_control *);
1577void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001578void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001579
1580/*
1581 * namei.c
1582 */
1583struct dentry *f2fs_get_parent(struct dentry *child);
1584
1585/*
1586 * dir.c
1587 */
Chao Yudbeacf02014-09-24 18:17:04 +08001588extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001589void set_de_type(struct f2fs_dir_entry *, umode_t);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001590
1591struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1592 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001593bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07001594 unsigned int, struct f2fs_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001595void do_make_empty_dir(struct inode *, struct inode *,
1596 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001597struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001598 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001599void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001600int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001601void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001602struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1603 struct page **);
1604struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1605ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1606void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1607 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001608int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001609void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001610 const struct qstr *, f2fs_hash_t , unsigned int);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001611int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1612 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001613void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1614 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001615int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001616bool f2fs_empty_dir(struct inode *);
1617
Al Virob7f7a5e2013-01-25 16:15:43 -05001618static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1619{
David Howells2b0143b2015-03-17 22:25:59 +00001620 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001621 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001622}
1623
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001624/*
1625 * super.c
1626 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001627int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001628int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001629extern __printf(3, 4)
1630void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001631
1632/*
1633 * hash.c
1634 */
Gu Zhengeee61602014-06-24 18:21:23 +08001635f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001636
1637/*
1638 * node.c
1639 */
1640struct dnode_of_data;
1641struct node_info;
1642
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001643bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001644int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001645bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001646bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001647void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1648int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1649int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001650int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001651int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Gu Zheng58e674d2013-11-19 18:03:18 +08001652void remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001653struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001654struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001655void ra_node_page(struct f2fs_sb_info *, nid_t);
1656struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1657struct page *get_node_page_ra(struct page *, int);
1658void sync_inode_page(struct dnode_of_data *);
1659int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1660bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1661void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1662void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu70cfed82014-08-02 15:26:04 +08001663void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001664void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001665int recover_inode_page(struct f2fs_sb_info *, struct page *);
1666int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1667 struct f2fs_summary_block *);
1668void flush_nat_entries(struct f2fs_sb_info *);
1669int build_node_manager(struct f2fs_sb_info *);
1670void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001671int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001672void destroy_node_manager_caches(void);
1673
1674/*
1675 * segment.c
1676 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001677void register_inmem_page(struct inode *, struct page *);
1678void commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001679void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001680void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001681int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001682int create_flush_cmd_control(struct f2fs_sb_info *);
1683void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001684void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001685void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001686void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001687void release_discard_addrs(struct f2fs_sb_info *);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -07001688void discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001689int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001690void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001691int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001692struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001693void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001694void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001695void write_node_page(unsigned int, struct f2fs_io_info *);
1696void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1697void rewrite_data_page(struct f2fs_io_info *);
Chao Yu528e3452015-05-28 19:15:35 +08001698void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1699 block_t, block_t, unsigned char, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001700void allocate_data_block(struct f2fs_sb_info *, struct page *,
1701 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001702void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001703void write_data_summaries(struct f2fs_sb_info *, block_t);
1704void write_node_summaries(struct f2fs_sb_info *, block_t);
1705int lookup_journal_in_cursum(struct f2fs_summary_block *,
1706 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001707void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001708int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001709void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001710int __init create_segment_manager_caches(void);
1711void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001712
1713/*
1714 * checkpoint.c
1715 */
1716struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1717struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08001718bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Jaegeuk Kim4c521f492014-09-11 13:49:55 -07001719int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
Chao Yu635aee12014-12-08 15:02:52 +08001720void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001721long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001722void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1723void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001724void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001725bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001726int acquire_orphan_inode(struct f2fs_sb_info *);
1727void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001728void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1729void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8f99a942013-11-28 15:43:43 +08001730void recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001731int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001732void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001733void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001734void remove_dirty_dir_inode(struct inode *);
1735void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001736void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001737void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001738int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001739void destroy_checkpoint_caches(void);
1740
1741/*
1742 * data.c
1743 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001744void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001745int f2fs_submit_page_bio(struct f2fs_io_info *);
1746void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08001747void set_data_blkaddr(struct dnode_of_data *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001748int reserve_new_block(struct dnode_of_data *);
Huajun Lib6009652013-11-10 23:13:18 +08001749int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Chao Yu429511c2015-02-05 17:54:31 +08001750void f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
1751void f2fs_destroy_extent_tree(struct inode *);
Chao Yu028a41e2015-03-19 19:26:02 +08001752void f2fs_init_extent_cache(struct inode *, struct f2fs_extent *);
Chao Yu7e4dde72015-02-05 17:51:34 +08001753void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu0bdee482015-03-19 19:27:51 +08001754void f2fs_preserve_extent_tree(struct inode *);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07001755struct page *get_read_data_page(struct inode *, pgoff_t, int);
1756struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001757struct page *get_lock_data_page(struct inode *, pgoff_t);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001758struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001759int do_write_data_page(struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001760int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu429511c2015-02-05 17:54:31 +08001761void init_extent_cache_info(struct f2fs_sb_info *);
1762int __init create_extent_cache(void);
1763void destroy_extent_cache(void);
Chao Yu487261f2015-02-05 17:44:29 +08001764void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1765int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001766
1767/*
1768 * gc.c
1769 */
1770int start_gc_thread(struct f2fs_sb_info *);
1771void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001772block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Jaegeuk Kim408e9372013-01-03 17:55:52 +09001773int f2fs_gc(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001774void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001775
1776/*
1777 * recovery.c
1778 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001779int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001780bool space_for_roll_forward(struct f2fs_sb_info *);
1781
1782/*
1783 * debug.c
1784 */
1785#ifdef CONFIG_F2FS_STAT_FS
1786struct f2fs_stat_info {
1787 struct list_head stat_list;
1788 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001789 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1790 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu4bf6fd92015-02-05 17:58:28 +08001791 int hit_ext, total_ext, ext_tree, ext_node;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001792 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001793 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001794 int total_count, utilization;
Jaegeuk Kimd24bdcb2015-01-30 16:43:11 -08001795 int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001796 unsigned int valid_count, valid_node_count, valid_inode_count;
1797 unsigned int bimodal, avg_vblocks;
1798 int util_free, util_valid, util_invalid;
1799 int rsvd_segs, overp_segs;
1800 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001801 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001802 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09001803 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001804 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09001805 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001806 int curseg[NR_CURSEG_TYPE];
1807 int cursec[NR_CURSEG_TYPE];
1808 int curzone[NR_CURSEG_TYPE];
1809
1810 unsigned int segment_count[2];
1811 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001812 unsigned int inplace_count;
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -08001813 unsigned base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001814};
1815
Gu Zheng963d4f72013-07-12 14:47:11 +08001816static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1817{
Chris Fries6c311ec2014-01-17 14:44:39 -06001818 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001819}
1820
Changman Lee942e0be2014-02-13 15:12:29 +09001821#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001822#define stat_inc_call_count(si) ((si)->call_count++)
1823#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1824#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1825#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1826#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1827#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001828#define stat_inc_inline_inode(inode) \
1829 do { \
1830 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001831 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001832 } while (0)
1833#define stat_dec_inline_inode(inode) \
1834 do { \
1835 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001836 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001837 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001838#define stat_inc_inline_dir(inode) \
1839 do { \
1840 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001841 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001842 } while (0)
1843#define stat_dec_inline_dir(inode) \
1844 do { \
1845 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001846 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001847 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001848#define stat_inc_seg_type(sbi, curseg) \
1849 ((sbi)->segment_count[(curseg)->alloc_type]++)
1850#define stat_inc_block_count(sbi, curseg) \
1851 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001852#define stat_inc_inplace_blocks(sbi) \
1853 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09001854#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001855 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001856 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001857 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001858 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001859 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001860 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1861 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001862 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001863 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1864 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001865 } while (0)
1866
1867#define stat_inc_tot_blk_count(si, blks) \
1868 (si->tot_blks += (blks))
1869
Changman Leee1235982014-12-23 08:37:39 +09001870#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001871 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001872 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001873 stat_inc_tot_blk_count(si, blks); \
1874 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001875 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001876 } while (0)
1877
Changman Leee1235982014-12-23 08:37:39 +09001878#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001879 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001880 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001881 stat_inc_tot_blk_count(si, blks); \
1882 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001883 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001884 } while (0)
1885
1886int f2fs_build_stats(struct f2fs_sb_info *);
1887void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001888void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001889void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001890#else
Changman Lee942e0be2014-02-13 15:12:29 +09001891#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001892#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001893#define stat_inc_bggc_count(si)
1894#define stat_inc_dirty_dir(sbi)
1895#define stat_dec_dirty_dir(sbi)
1896#define stat_inc_total_hit(sb)
1897#define stat_inc_read_hit(sb)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001898#define stat_inc_inline_inode(inode)
1899#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001900#define stat_inc_inline_dir(inode)
1901#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001902#define stat_inc_seg_type(sbi, curseg)
1903#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09001904#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09001905#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001906#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09001907#define stat_inc_data_blk_count(sbi, blks, gc_type)
1908#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001909
1910static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1911static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001912static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09001913static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001914#endif
1915
1916extern const struct file_operations f2fs_dir_operations;
1917extern const struct file_operations f2fs_file_operations;
1918extern const struct inode_operations f2fs_file_inode_operations;
1919extern const struct address_space_operations f2fs_dblock_aops;
1920extern const struct address_space_operations f2fs_node_aops;
1921extern const struct address_space_operations f2fs_meta_aops;
1922extern const struct inode_operations f2fs_dir_inode_operations;
1923extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07001924extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001925extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08001926extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08001927
Huajun Lie18c65b2013-11-10 23:13:19 +08001928/*
1929 * inline.c
1930 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07001931bool f2fs_may_inline_data(struct inode *);
1932bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001933void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08001934bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08001935int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001936int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1937int f2fs_convert_inline_inode(struct inode *);
1938int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07001939bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001940struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
1941 struct f2fs_filename *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08001942struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1943int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001944int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
1945 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08001946void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1947 struct inode *, struct inode *);
1948bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07001949int f2fs_read_inline_dir(struct file *, struct dir_context *,
1950 struct f2fs_str *);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07001951
1952/*
1953 * crypto support
1954 */
1955static inline int f2fs_encrypted_inode(struct inode *inode)
1956{
1957#ifdef CONFIG_F2FS_FS_ENCRYPTION
1958 return file_is_encrypt(inode);
1959#else
1960 return 0;
1961#endif
1962}
1963
1964static inline void f2fs_set_encrypted_inode(struct inode *inode)
1965{
1966#ifdef CONFIG_F2FS_FS_ENCRYPTION
1967 file_set_encrypt(inode);
1968#endif
1969}
1970
1971static inline bool f2fs_bio_encrypted(struct bio *bio)
1972{
1973#ifdef CONFIG_F2FS_FS_ENCRYPTION
1974 return unlikely(bio->bi_private != NULL);
1975#else
1976 return false;
1977#endif
1978}
1979
1980static inline int f2fs_sb_has_crypto(struct super_block *sb)
1981{
1982#ifdef CONFIG_F2FS_FS_ENCRYPTION
1983 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
1984#else
1985 return 0;
1986#endif
1987}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07001988
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07001989static inline bool f2fs_may_encrypt(struct inode *inode)
1990{
1991#ifdef CONFIG_F2FS_FS_ENCRYPTION
1992 mode_t mode = inode->i_mode;
1993
1994 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
1995#else
1996 return 0;
1997#endif
1998}
1999
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002000/* crypto_policy.c */
2001int f2fs_is_child_context_consistent_with_parent(struct inode *,
2002 struct inode *);
2003int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2004int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2005int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002006
2007/* crypt.c */
Jaegeuk Kim8bacf6de2015-05-12 13:26:54 -07002008extern struct kmem_cache *f2fs_crypt_info_cachep;
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002009bool f2fs_valid_contents_enc_mode(uint32_t);
2010uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2011struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2012void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2013struct page *f2fs_encrypt(struct inode *, struct page *);
2014int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2015int f2fs_decrypt_one(struct inode *, struct page *);
2016void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2017
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002018/* crypto_key.c */
Jaegeuk Kim26bf3dc2015-05-19 22:26:54 -07002019void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002020int _f2fs_get_encryption_info(struct inode *inode);
2021
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002022/* crypto_fname.c */
2023bool f2fs_valid_filenames_enc_mode(uint32_t);
2024u32 f2fs_fname_crypto_round_up(u32, u32);
2025int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2026int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2027 const struct f2fs_str *, struct f2fs_str *);
2028int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2029 struct f2fs_str *);
2030
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002031#ifdef CONFIG_F2FS_FS_ENCRYPTION
2032void f2fs_restore_and_release_control_page(struct page **);
2033void f2fs_restore_control_page(struct page *);
2034
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002035int __init f2fs_init_crypto(void);
2036int f2fs_crypto_initialize(void);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002037void f2fs_exit_crypto(void);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002038
2039int f2fs_has_encryption_key(struct inode *);
2040
2041static inline int f2fs_get_encryption_info(struct inode *inode)
2042{
2043 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2044
2045 if (!ci ||
2046 (ci->ci_keyring_key &&
2047 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2048 (1 << KEY_FLAG_REVOKED) |
2049 (1 << KEY_FLAG_DEAD)))))
2050 return _f2fs_get_encryption_info(inode);
2051 return 0;
2052}
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002053
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002054void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2055int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2056 int lookup, struct f2fs_filename *);
2057void f2fs_fname_free_filename(struct f2fs_filename *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002058#else
2059static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2060static inline void f2fs_restore_control_page(struct page *p) { }
2061
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002062static inline int __init f2fs_init_crypto(void) { return 0; }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002063static inline void f2fs_exit_crypto(void) { }
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002064
2065static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2066static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002067static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2068
2069static inline int f2fs_fname_setup_filename(struct inode *dir,
2070 const struct qstr *iname,
2071 int lookup, struct f2fs_filename *fname)
2072{
2073 memset(fname, 0, sizeof(struct f2fs_filename));
2074 fname->usr_fname = iname;
2075 fname->disk_name.name = (unsigned char *)iname->name;
2076 fname->disk_name.len = iname->len;
2077 return 0;
2078}
2079
2080static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002081#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002082#endif