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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 Kim740432f2015-08-14 11:43:56 -070022#include <linux/bio.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090023
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090024#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070025#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090026#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090027#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070028#define f2fs_bug_on(sbi, condition) \
29 do { \
30 if (unlikely(condition)) { \
31 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080032 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070033 } \
34 } while (0)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090035#define f2fs_down_write(x, y) down_write(x)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090036#endif
37
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090038/*
39 * For mount options
40 */
41#define F2FS_MOUNT_BG_GC 0x00000001
42#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
43#define F2FS_MOUNT_DISCARD 0x00000004
44#define F2FS_MOUNT_NOHEAP 0x00000008
45#define F2FS_MOUNT_XATTR_USER 0x00000010
46#define F2FS_MOUNT_POSIX_ACL 0x00000020
47#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +090048#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +080049#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +080050#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
51#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
52#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -070053#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +080054#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090055
56#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
57#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
58#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
59
60#define ver_after(a, b) (typecheck(unsigned long long, a) && \
61 typecheck(unsigned long long, b) && \
62 ((long long)((a) - (b)) > 0))
63
Jaegeuk Kima9841c42013-05-24 12:41:04 +090064typedef u32 block_t; /*
65 * should not change u32, since it is the on-disk block
66 * address format, __le32.
67 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090068typedef u32 nid_t;
69
70struct f2fs_mount_info {
71 unsigned int opt;
72};
73
Jaegeuk Kimcde4de12015-04-20 13:57:51 -070074#define F2FS_FEATURE_ENCRYPT 0x0001
75
Jaegeuk Kim76f105a2015-04-13 15:10:36 -070076#define F2FS_HAS_FEATURE(sb, mask) \
77 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
78#define F2FS_SET_FEATURE(sb, mask) \
79 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
80#define F2FS_CLEAR_FEATURE(sb, mask) \
81 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
82
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090083#define CRCPOLY_LE 0xedb88320
84
85static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090086{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090087 unsigned char *p = (unsigned char *)buf;
88 __u32 crc = F2FS_SUPER_MAGIC;
89 int i;
90
91 while (len--) {
92 crc ^= *p++;
93 for (i = 0; i < 8; i++)
94 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
95 }
96 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090097}
98
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090099static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900100{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900101 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900102}
103
104/*
105 * For checkpoint manager
106 */
107enum {
108 NAT_BITMAP,
109 SIT_BITMAP
110};
111
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700112enum {
113 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800114 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700115 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700116 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700117 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700118};
119
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800120#define DEF_BATCHED_TRIM_SECTIONS 32
121#define BATCHED_TRIM_SEGMENTS(sbi) \
122 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700123#define BATCHED_TRIM_BLOCKS(sbi) \
124 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800125
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700126struct cp_control {
127 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700128 __u64 trim_start;
129 __u64 trim_end;
130 __u64 trim_minlen;
131 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700132};
133
Chao Yu662befd2014-02-07 16:11:53 +0800134/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800135 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800136 */
137enum {
138 META_CP,
139 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800140 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700141 META_SSA,
142 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800143};
144
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700145/* for the list of ino */
146enum {
147 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700148 APPEND_INO, /* for append ino list */
149 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700150 MAX_INO_ENTRY, /* max. list */
151};
152
153struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900154 struct list_head list; /* list head */
155 nid_t ino; /* inode number */
156};
157
Chao Yu06292072014-12-29 15:56:18 +0800158/*
159 * for the list of directory inodes or gc inodes.
160 * NOTE: there are two slab users for this structure, if we add/modify/delete
161 * fields in structure for one of slab users, it may affect fields or size of
162 * other one, in this condition, it's better to split both of slab and related
163 * data structure.
164 */
165struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900166 struct list_head list; /* list head */
167 struct inode *inode; /* vfs inode pointer */
168};
169
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900170/* for the list of blockaddresses to be discarded */
171struct discard_entry {
172 struct list_head list; /* list head */
173 block_t blkaddr; /* block address to be discarded */
174 int len; /* # of consecutive blocks of the discard */
175};
176
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900177/* for the list of fsync inodes, used only during recovery */
178struct fsync_inode_entry {
179 struct list_head list; /* list head */
180 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700181 block_t blkaddr; /* block address locating the last fsync */
182 block_t last_dentry; /* block address locating the last dentry */
183 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900184};
185
186#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
187#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
188
189#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
190#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
191#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
192#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
193
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700194#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
195#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
196
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900197static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
198{
199 int before = nats_in_cursum(rs);
200 rs->n_nats = cpu_to_le16(before + i);
201 return before;
202}
203
204static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
205{
206 int before = sits_in_cursum(rs);
207 rs->n_sits = cpu_to_le16(before + i);
208 return before;
209}
210
Chao Yu184a5cd2014-09-04 18:13:01 +0800211static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
212 int type)
213{
214 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700215 return size <= MAX_NAT_JENTRIES(sum);
216 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800217}
218
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900219/*
Namjae Jeone9750822013-02-04 23:41:41 +0900220 * ioctl commands
221 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700222#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
223#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800224#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700225
226#define F2FS_IOCTL_MAGIC 0xf5
227#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
228#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700229#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800230#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
231#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800232#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Namjae Jeone9750822013-02-04 23:41:41 +0900233
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700234#define F2FS_IOC_SET_ENCRYPTION_POLICY \
235 _IOR('f', 19, struct f2fs_encryption_policy)
236#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
237 _IOW('f', 20, __u8[16])
238#define F2FS_IOC_GET_ENCRYPTION_POLICY \
239 _IOW('f', 21, struct f2fs_encryption_policy)
240
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800241/*
242 * should be same as XFS_IOC_GOINGDOWN.
243 * Flags for going down operation used by FS_IOC_GOINGDOWN
244 */
245#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
246#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
247#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
248#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
249
Namjae Jeone9750822013-02-04 23:41:41 +0900250#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
251/*
252 * ioctl commands in 32 bit emulation
253 */
254#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
255#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
256#endif
257
258/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900259 * For INODE and NODE manager
260 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700261/* for directory operations */
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -0700262struct f2fs_str {
263 unsigned char *name;
264 u32 len;
265};
266
267struct f2fs_filename {
268 const struct qstr *usr_fname;
269 struct f2fs_str disk_name;
270 f2fs_hash_t hash;
271#ifdef CONFIG_F2FS_FS_ENCRYPTION
272 struct f2fs_str crypto_buf;
273#endif
274};
275
276#define FSTR_INIT(n, l) { .name = n, .len = l }
277#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
278#define fname_name(p) ((p)->disk_name.name)
279#define fname_len(p) ((p)->disk_name.len)
280
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700281struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700282 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700283 const void *bitmap;
284 struct f2fs_dir_entry *dentry;
285 __u8 (*filename)[F2FS_SLOT_LEN];
286 int max;
287};
288
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700289static inline void make_dentry_ptr(struct inode *inode,
290 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700291{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700292 d->inode = inode;
293
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700294 if (type == 1) {
295 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
296 d->max = NR_DENTRY_IN_BLOCK;
297 d->bitmap = &t->dentry_bitmap;
298 d->dentry = t->dentry;
299 d->filename = t->filename;
300 } else {
301 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
302 d->max = NR_INLINE_DENTRY;
303 d->bitmap = &t->dentry_bitmap;
304 d->dentry = t->dentry;
305 d->filename = t->filename;
306 }
307}
308
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900309/*
310 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
311 * as its node offset to distinguish from index node blocks.
312 * But some bits are used to mark the node block.
313 */
314#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
315 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900316enum {
317 ALLOC_NODE, /* allocate a new node page if needed */
318 LOOKUP_NODE, /* look up a node without readahead */
319 LOOKUP_NODE_RA, /*
320 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800321 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900322 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900323};
324
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700325#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900326
Chao Yu817202d92014-04-28 17:59:43 +0800327#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
328
Chao Yu13054c52015-02-05 17:52:58 +0800329/* vector size for gang look-up from extent cache that consists of radix tree */
330#define EXT_TREE_VEC_SIZE 64
331
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900332/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800333#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
334
335/* number of extent info in extent cache we try to shrink */
336#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900337
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900338struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800339 unsigned int fofs; /* start offset in a file */
340 u32 blk; /* start block address of the extent */
341 unsigned int len; /* length of the extent */
342};
343
344struct extent_node {
345 struct rb_node rb_node; /* rb node located in rb-tree */
346 struct list_head list; /* node in global extent list of sbi */
347 struct extent_info ei; /* extent info */
348};
349
350struct extent_tree {
351 nid_t ino; /* inode number */
352 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800353 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700354 struct extent_info largest; /* largested extent info */
Chao Yu13054c52015-02-05 17:52:58 +0800355 rwlock_t lock; /* protect extent info rb-tree */
356 atomic_t refcount; /* reference count of rb-tree */
357 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900358};
359
360/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700361 * This structure is taken from ext4_map_blocks.
362 *
363 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
364 */
365#define F2FS_MAP_NEW (1 << BH_New)
366#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700367#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
368#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
369 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700370
371struct f2fs_map_blocks {
372 block_t m_pblk;
373 block_t m_lblk;
374 unsigned int m_len;
375 unsigned int m_flags;
376};
377
378/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900379 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
380 */
381#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900382#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700383#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700384#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900385
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700386#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
387#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
388#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
389#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
390#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
391#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700392#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
393#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
394#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700395#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
396#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700397
398/* Encryption algorithms */
399#define F2FS_ENCRYPTION_MODE_INVALID 0
400#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
401#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
402#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
403#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700404
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700405#include "f2fs_crypto.h"
406
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900407#define DEF_DIR_LEVEL 0
408
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900409struct f2fs_inode_info {
410 struct inode vfs_inode; /* serve a vfs inode */
411 unsigned long i_flags; /* keep an inode flags for ioctl */
412 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900413 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900414 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900415 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900416 umode_t i_acl_mode; /* keep file acl mode temporarily */
417
418 /* Use below internally in f2fs*/
419 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900420 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700421 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900422 f2fs_hash_t chash; /* hash value of given file name */
423 unsigned int clevel; /* maximum level of given file name */
424 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900425 unsigned long long xattr_ver; /* cp version of xattr modification */
Chao Yu06292072014-12-29 15:56:18 +0800426 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700427
428 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
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700431 struct extent_tree *extent_tree; /* cached extent_tree entry */
432
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700433#ifdef CONFIG_F2FS_FS_ENCRYPTION
434 /* Encryption params */
435 struct f2fs_crypt_info *i_crypt_info;
436#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900437};
438
439static inline void get_extent_info(struct extent_info *ext,
440 struct f2fs_extent i_ext)
441{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900442 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800443 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900444 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900445}
446
447static inline void set_raw_extent(struct extent_info *ext,
448 struct f2fs_extent *i_ext)
449{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900450 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800451 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900452 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900453}
454
Chao Yu429511c2015-02-05 17:54:31 +0800455static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
456 u32 blk, unsigned int len)
457{
458 ei->fofs = fofs;
459 ei->blk = blk;
460 ei->len = len;
461}
462
Chao Yu0bdee482015-03-19 19:27:51 +0800463static inline bool __is_extent_same(struct extent_info *ei1,
464 struct extent_info *ei2)
465{
466 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
467 ei1->len == ei2->len);
468}
469
Chao Yu429511c2015-02-05 17:54:31 +0800470static inline bool __is_extent_mergeable(struct extent_info *back,
471 struct extent_info *front)
472{
473 return (back->fofs + back->len == front->fofs &&
474 back->blk + back->len == front->blk);
475}
476
477static inline bool __is_back_mergeable(struct extent_info *cur,
478 struct extent_info *back)
479{
480 return __is_extent_mergeable(back, cur);
481}
482
483static inline bool __is_front_mergeable(struct extent_info *cur,
484 struct extent_info *front)
485{
486 return __is_extent_mergeable(cur, front);
487}
488
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900489struct f2fs_nm_info {
490 block_t nat_blkaddr; /* base disk address of NAT */
491 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900492 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900493 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900494 unsigned int ram_thresh; /* control the memory footprint */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900495
496 /* NAT cache management */
497 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700498 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800499 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900500 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700501 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800502 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900503
504 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900505 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900506 struct list_head free_nid_list; /* a list for free nids */
507 spinlock_t free_nid_list_lock; /* protect free nid list */
508 unsigned int fcnt; /* the number of free node id */
509 struct mutex build_lock; /* lock for build free nids */
510
511 /* for checkpoint */
512 char *nat_bitmap; /* NAT bitmap pointer */
513 int bitmap_size; /* bitmap size */
514};
515
516/*
517 * this structure is used as one of function parameters.
518 * all the information are dedicated to a given direct node block determined
519 * by the data offset in a file.
520 */
521struct dnode_of_data {
522 struct inode *inode; /* vfs inode pointer */
523 struct page *inode_page; /* its inode page, NULL is possible */
524 struct page *node_page; /* cached direct node page */
525 nid_t nid; /* node id of the direct node block */
526 unsigned int ofs_in_node; /* data offset in the node page */
527 bool inode_page_locked; /* inode page is locked or not */
528 block_t data_blkaddr; /* block address of the node block */
529};
530
531static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
532 struct page *ipage, struct page *npage, nid_t nid)
533{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900534 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900535 dn->inode = inode;
536 dn->inode_page = ipage;
537 dn->node_page = npage;
538 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900539}
540
541/*
542 * For SIT manager
543 *
544 * By default, there are 6 active log areas across the whole main area.
545 * When considering hot and cold data separation to reduce cleaning overhead,
546 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
547 * respectively.
548 * In the current design, you should not change the numbers intentionally.
549 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
550 * logs individually according to the underlying devices. (default: 6)
551 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
552 * data and 8 for node logs.
553 */
554#define NR_CURSEG_DATA_TYPE (3)
555#define NR_CURSEG_NODE_TYPE (3)
556#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
557
558enum {
559 CURSEG_HOT_DATA = 0, /* directory entry blocks */
560 CURSEG_WARM_DATA, /* data blocks */
561 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
562 CURSEG_HOT_NODE, /* direct node blocks of directory files */
563 CURSEG_WARM_NODE, /* direct node blocks of normal files */
564 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800565 NO_CHECK_TYPE,
566 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900567};
568
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900569struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900570 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800571 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900572 int ret;
573};
574
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800575struct flush_cmd_control {
576 struct task_struct *f2fs_issue_flush; /* flush thread */
577 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800578 struct llist_head issue_list; /* list for command issue */
579 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800580};
581
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900582struct f2fs_sm_info {
583 struct sit_info *sit_info; /* whole segment information */
584 struct free_segmap_info *free_info; /* free segment information */
585 struct dirty_seglist_info *dirty_info; /* dirty segment information */
586 struct curseg_info *curseg_array; /* active segment information */
587
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900588 block_t seg0_blkaddr; /* block address of 0'th segment */
589 block_t main_blkaddr; /* start block address of main area */
590 block_t ssa_blkaddr; /* start block address of SSA area */
591
592 unsigned int segment_count; /* total # of segments */
593 unsigned int main_segments; /* # of segments in main area */
594 unsigned int reserved_segments; /* # of reserved segments */
595 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900596
597 /* a threshold to reclaim prefree segments */
598 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900599
600 /* for small discard management */
601 struct list_head discard_list; /* 4KB discard list */
602 int nr_discards; /* # of discards in the list */
603 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900604
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800605 /* for batched trimming */
606 unsigned int trim_sections; /* # of sections to trim */
607
Chao Yu184a5cd2014-09-04 18:13:01 +0800608 struct list_head sit_entry_set; /* sit entry set list */
609
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900610 unsigned int ipu_policy; /* in-place-update policy */
611 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700612 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900613
614 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800615 struct flush_cmd_control *cmd_control_info;
616
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900617};
618
619/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900620 * For superblock
621 */
622/*
623 * COUNT_TYPE for monitoring
624 *
625 * f2fs monitors the number of several block types such as on-writeback,
626 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
627 */
628enum count_type {
629 F2FS_WRITEBACK,
630 F2FS_DIRTY_DENTS,
631 F2FS_DIRTY_NODES,
632 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800633 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900634 NR_COUNT_TYPE,
635};
636
637/*
arter97e1c42042014-08-06 23:22:50 +0900638 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900639 * The available types are:
640 * DATA User data pages. It operates as async mode.
641 * NODE Node pages. It operates as async mode.
642 * META FS metadata pages such as SIT, NAT, CP.
643 * NR_PAGE_TYPE The number of page types.
644 * META_FLUSH Make sure the previous pages are written
645 * with waiting the bio's completion
646 * ... Only can be used with META.
647 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900648#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900649enum page_type {
650 DATA,
651 NODE,
652 META,
653 NR_PAGE_TYPE,
654 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700655 INMEM, /* the below types are used by tracepoints only. */
656 INMEM_DROP,
657 IPU,
658 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900659};
660
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900661struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700662 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800663 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
664 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800665 block_t blk_addr; /* block address to be written */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700666 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700667 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900668};
669
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900670#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900671struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900672 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900673 struct bio *bio; /* bios to merge */
674 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900675 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800676 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900677};
678
Chao Yu67298802014-11-18 11:18:36 +0800679/* for inner inode cache management */
680struct inode_management {
681 struct radix_tree_root ino_root; /* ino entry array */
682 spinlock_t ino_lock; /* for ino entry lock */
683 struct list_head ino_list; /* inode list head */
684 unsigned long ino_num; /* number of entries */
685};
686
Chao Yucaf00472015-01-28 17:48:42 +0800687/* For s_flag in struct f2fs_sb_info */
688enum {
689 SBI_IS_DIRTY, /* dirty flag for checkpoint */
690 SBI_IS_CLOSE, /* specify unmounting */
691 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
692 SBI_POR_DOING, /* recovery is doing or not */
693};
694
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900695struct f2fs_sb_info {
696 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900697 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900698 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
699 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800700 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900701
702 /* for node-related operations */
703 struct f2fs_nm_info *nm_info; /* node manager */
704 struct inode *node_inode; /* cache node blocks */
705
706 /* for segment-related operations */
707 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900708
709 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800710 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900711 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900712
713 /* for checkpoint */
714 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
715 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900716 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800717 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800718 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim5463e7c2015-04-21 10:40:54 -0700719 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900720 wait_queue_head_t cp_wait;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900721
Chao Yu67298802014-11-18 11:18:36 +0800722 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700723
724 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800725 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900726
727 /* for directory inode management */
728 struct list_head dir_inode_list; /* dir inode list */
729 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900730
Chao Yu13054c52015-02-05 17:52:58 +0800731 /* for extent tree cache */
732 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
733 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
734 struct list_head extent_list; /* lru list for shrinker */
735 spinlock_t extent_lock; /* locking extent lru list */
736 int total_ext_tree; /* extent tree count */
737 atomic_t total_ext_node; /* extent info count */
738
arter97e1c42042014-08-06 23:22:50 +0900739 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900740 unsigned int log_sectors_per_block; /* log2 sectors per block */
741 unsigned int log_blocksize; /* log2 block size */
742 unsigned int blocksize; /* block size */
743 unsigned int root_ino_num; /* root inode number*/
744 unsigned int node_ino_num; /* node inode number*/
745 unsigned int meta_ino_num; /* meta inode number*/
746 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
747 unsigned int blocks_per_seg; /* blocks per segment */
748 unsigned int segs_per_sec; /* segments per section */
749 unsigned int secs_per_zone; /* sections per zone */
750 unsigned int total_sections; /* total section count */
751 unsigned int total_node_count; /* total node block count */
752 unsigned int total_valid_node_count; /* valid node block count */
753 unsigned int total_valid_inode_count; /* valid inode count */
754 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900755 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900756
757 block_t user_block_count; /* # of user blocks */
758 block_t total_valid_block_count; /* # of valid blocks */
759 block_t alloc_valid_block_count; /* # of allocated blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700760 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900761 block_t last_valid_block_count; /* for recovery */
762 u32 s_next_generation; /* for NFS support */
763 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
764
765 struct f2fs_mount_info mount_opt; /* mount options */
766
767 /* for cleaning operations */
768 struct mutex gc_mutex; /* mutex for GC */
769 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900770 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900771
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900772 /* maximum # of trials to find a victim segment for SSR and GC */
773 unsigned int max_victim_search;
774
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900775 /*
776 * for stat information.
777 * one is for the LFS mode, and the other is for the SSR mode.
778 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900779#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900780 struct f2fs_stat_info *stat_info; /* FS status information */
781 unsigned int segment_count[2]; /* # of allocated segments */
782 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900783 atomic_t inplace_count; /* # of inplace update */
Chao Yu727edac2015-07-15 17:29:49 +0800784 atomic_t total_hit_ext; /* # of lookup extent cache */
785 atomic_t read_hit_ext; /* # of hit extent cache */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800786 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800787 atomic_t inline_inode; /* # of inline_data inodes */
788 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900789 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900790 unsigned int n_dirty_dirs; /* # of dir inodes */
791#endif
792 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900793 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900794
795 /* For sysfs suppport */
796 struct kobject s_kobj;
797 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700798
799 /* For shrinker support */
800 struct list_head s_list;
801 struct mutex umount_mutex;
802 unsigned int shrinker_run_no;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900803};
804
805/*
806 * Inline functions
807 */
808static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
809{
810 return container_of(inode, struct f2fs_inode_info, vfs_inode);
811}
812
813static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
814{
815 return sb->s_fs_info;
816}
817
Jaegeuk Kim40813632014-09-02 15:31:18 -0700818static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
819{
820 return F2FS_SB(inode->i_sb);
821}
822
823static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
824{
825 return F2FS_I_SB(mapping->host);
826}
827
828static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
829{
830 return F2FS_M_SB(page->mapping);
831}
832
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900833static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
834{
835 return (struct f2fs_super_block *)(sbi->raw_super);
836}
837
838static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
839{
840 return (struct f2fs_checkpoint *)(sbi->ckpt);
841}
842
Gu Zheng45590712013-07-15 17:57:38 +0800843static inline struct f2fs_node *F2FS_NODE(struct page *page)
844{
845 return (struct f2fs_node *)page_address(page);
846}
847
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900848static inline struct f2fs_inode *F2FS_INODE(struct page *page)
849{
850 return &((struct f2fs_node *)page_address(page))->i;
851}
852
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900853static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
854{
855 return (struct f2fs_nm_info *)(sbi->nm_info);
856}
857
858static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
859{
860 return (struct f2fs_sm_info *)(sbi->sm_info);
861}
862
863static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
864{
865 return (struct sit_info *)(SM_I(sbi)->sit_info);
866}
867
868static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
869{
870 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
871}
872
873static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
874{
875 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
876}
877
Gu Zheng9df27d92014-01-20 18:37:04 +0800878static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
879{
880 return sbi->meta_inode->i_mapping;
881}
882
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900883static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
884{
885 return sbi->node_inode->i_mapping;
886}
887
Chao Yucaf00472015-01-28 17:48:42 +0800888static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900889{
Chao Yucaf00472015-01-28 17:48:42 +0800890 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900891}
892
Chao Yucaf00472015-01-28 17:48:42 +0800893static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900894{
Chao Yucaf00472015-01-28 17:48:42 +0800895 sbi->s_flag |= (0x01 << type);
896}
897
898static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
899{
900 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900901}
902
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900903static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
904{
905 return le64_to_cpu(cp->checkpoint_ver);
906}
907
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900908static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
909{
910 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
911 return ckpt_flags & f;
912}
913
914static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
915{
916 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
917 ckpt_flags |= f;
918 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
919}
920
921static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
922{
923 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
924 ckpt_flags &= (~f);
925 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
926}
927
Gu Zhenge4795562013-09-27 18:08:30 +0800928static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900929{
Gu Zhenge4795562013-09-27 18:08:30 +0800930 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900931}
932
Gu Zhenge4795562013-09-27 18:08:30 +0800933static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900934{
Gu Zhenge4795562013-09-27 18:08:30 +0800935 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900936}
937
Gu Zhenge4795562013-09-27 18:08:30 +0800938static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900939{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900940 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900941}
942
Gu Zhenge4795562013-09-27 18:08:30 +0800943static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900944{
Gu Zhenge4795562013-09-27 18:08:30 +0800945 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900946}
947
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800948static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
949{
950 int reason = CP_SYNC;
951
952 if (test_opt(sbi, FASTBOOT))
953 reason = CP_FASTBOOT;
954 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
955 reason = CP_UMOUNT;
956 return reason;
957}
958
959static inline bool __remain_node_summaries(int reason)
960{
961 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
962}
963
964static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
965{
966 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
967 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
968}
969
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900970/*
971 * Check whether the given nid is within node id range.
972 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900973static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900974{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800975 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
976 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800977 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +0900978 return -EINVAL;
979 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900980}
981
982#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
983
984/*
985 * Check whether the inode has blocks or not
986 */
987static inline int F2FS_HAS_BLOCKS(struct inode *inode)
988{
989 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -0600990 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900991 else
Chris Fries6c311ec2014-01-17 14:44:39 -0600992 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900993}
994
Chao Yu4bc8e9b2014-03-17 16:35:06 +0800995static inline bool f2fs_has_xattr_block(unsigned int ofs)
996{
997 return ofs == XATTR_NODE_OFFSET;
998}
999
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001000static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1001 struct inode *inode, blkcnt_t count)
1002{
1003 block_t valid_block_count;
1004
1005 spin_lock(&sbi->stat_lock);
1006 valid_block_count =
1007 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +08001008 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001009 spin_unlock(&sbi->stat_lock);
1010 return false;
1011 }
1012 inode->i_blocks += count;
1013 sbi->total_valid_block_count = valid_block_count;
1014 sbi->alloc_valid_block_count += (block_t)count;
1015 spin_unlock(&sbi->stat_lock);
1016 return true;
1017}
1018
Gu Zhengda19b0d2013-11-19 18:03:27 +08001019static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001020 struct inode *inode,
1021 blkcnt_t count)
1022{
1023 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001024 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1025 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001026 inode->i_blocks -= count;
1027 sbi->total_valid_block_count -= (block_t)count;
1028 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001029}
1030
1031static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1032{
1033 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001034 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001035}
1036
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001037static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001038{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001039 atomic_inc(&F2FS_I(inode)->dirty_pages);
1040 if (S_ISDIR(inode->i_mode))
1041 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001042}
1043
1044static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1045{
1046 atomic_dec(&sbi->nr_pages[count_type]);
1047}
1048
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001049static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001050{
Chao Yu5ac9f362015-06-29 18:14:10 +08001051 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1052 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001053 return;
1054
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001055 atomic_dec(&F2FS_I(inode)->dirty_pages);
1056
1057 if (S_ISDIR(inode->i_mode))
1058 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001059}
1060
1061static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1062{
1063 return atomic_read(&sbi->nr_pages[count_type]);
1064}
1065
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001066static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001067{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001068 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001069}
1070
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001071static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1072{
1073 unsigned int pages_per_sec = sbi->segs_per_sec *
1074 (1 << sbi->log_blocks_per_seg);
1075 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1076 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1077}
1078
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001079static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1080{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001081 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001082}
1083
1084static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1085{
1086 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1087
1088 /* return NAT or SIT bitmap */
1089 if (flag == NAT_BITMAP)
1090 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1091 else if (flag == SIT_BITMAP)
1092 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1093
1094 return 0;
1095}
1096
Wanpeng Li55141482015-02-26 07:57:20 +08001097static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1098{
1099 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1100}
1101
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001102static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1103{
1104 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001105 int offset;
1106
Wanpeng Li55141482015-02-26 07:57:20 +08001107 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001108 if (flag == NAT_BITMAP)
1109 return &ckpt->sit_nat_version_bitmap;
1110 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001111 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001112 } else {
1113 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001114 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001115 return &ckpt->sit_nat_version_bitmap + offset;
1116 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001117}
1118
1119static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1120{
1121 block_t start_addr;
1122 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001123 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001124
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001125 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001126
1127 /*
1128 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001129 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001130 */
1131 if (!(ckpt_version & 1))
1132 start_addr += sbi->blocks_per_seg;
1133
1134 return start_addr;
1135}
1136
1137static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1138{
1139 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1140}
1141
1142static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001143 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001144{
1145 block_t valid_block_count;
1146 unsigned int valid_node_count;
1147
1148 spin_lock(&sbi->stat_lock);
1149
Gu Zhengef86d702013-11-19 18:03:38 +08001150 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001151 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001152 spin_unlock(&sbi->stat_lock);
1153 return false;
1154 }
1155
Gu Zhengef86d702013-11-19 18:03:38 +08001156 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001157 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001158 spin_unlock(&sbi->stat_lock);
1159 return false;
1160 }
1161
1162 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001163 inode->i_blocks++;
1164
1165 sbi->alloc_valid_block_count++;
1166 sbi->total_valid_node_count++;
1167 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001168 spin_unlock(&sbi->stat_lock);
1169
1170 return true;
1171}
1172
1173static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001174 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001175{
1176 spin_lock(&sbi->stat_lock);
1177
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001178 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1179 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1180 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001181
Gu Zhengef86d702013-11-19 18:03:38 +08001182 inode->i_blocks--;
1183 sbi->total_valid_node_count--;
1184 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001185
1186 spin_unlock(&sbi->stat_lock);
1187}
1188
1189static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1190{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001191 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001192}
1193
1194static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1195{
1196 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001197 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001198 sbi->total_valid_inode_count++;
1199 spin_unlock(&sbi->stat_lock);
1200}
1201
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001202static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001203{
1204 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001205 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001206 sbi->total_valid_inode_count--;
1207 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001208}
1209
1210static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1211{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001212 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001213}
1214
1215static inline void f2fs_put_page(struct page *page, int unlock)
1216{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001217 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001218 return;
1219
1220 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001221 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001222 unlock_page(page);
1223 }
1224 page_cache_release(page);
1225}
1226
1227static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1228{
1229 if (dn->node_page)
1230 f2fs_put_page(dn->node_page, 1);
1231 if (dn->inode_page && dn->node_page != dn->inode_page)
1232 f2fs_put_page(dn->inode_page, 0);
1233 dn->node_page = NULL;
1234 dn->inode_page = NULL;
1235}
1236
1237static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001238 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001239{
Gu Zhenge8512d22014-03-07 18:43:28 +08001240 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001241}
1242
Gu Zheng7bd59382013-10-22 14:52:26 +08001243static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1244 gfp_t flags)
1245{
1246 void *entry;
1247retry:
1248 entry = kmem_cache_alloc(cachep, flags);
1249 if (!entry) {
1250 cond_resched();
1251 goto retry;
1252 }
1253
1254 return entry;
1255}
1256
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001257static inline struct bio *f2fs_bio_alloc(int npages)
1258{
1259 struct bio *bio;
1260
1261 /* No failure on bio allocation */
1262retry:
1263 bio = bio_alloc(GFP_NOIO, npages);
1264 if (!bio) {
1265 cond_resched();
1266 goto retry;
1267 }
1268 return bio;
1269}
1270
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001271static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1272 unsigned long index, void *item)
1273{
1274 while (radix_tree_insert(root, index, item))
1275 cond_resched();
1276}
1277
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001278#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1279
1280static inline bool IS_INODE(struct page *page)
1281{
Gu Zheng45590712013-07-15 17:57:38 +08001282 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001283 return RAW_IS_INODE(p);
1284}
1285
1286static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1287{
1288 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1289}
1290
1291static inline block_t datablock_addr(struct page *node_page,
1292 unsigned int offset)
1293{
1294 struct f2fs_node *raw_node;
1295 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001296 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001297 addr_array = blkaddr_in_node(raw_node);
1298 return le32_to_cpu(addr_array[offset]);
1299}
1300
1301static inline int f2fs_test_bit(unsigned int nr, char *addr)
1302{
1303 int mask;
1304
1305 addr += (nr >> 3);
1306 mask = 1 << (7 - (nr & 0x07));
1307 return mask & *addr;
1308}
1309
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001310static inline void f2fs_set_bit(unsigned int nr, char *addr)
1311{
1312 int mask;
1313
1314 addr += (nr >> 3);
1315 mask = 1 << (7 - (nr & 0x07));
1316 *addr |= mask;
1317}
1318
1319static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1320{
1321 int mask;
1322
1323 addr += (nr >> 3);
1324 mask = 1 << (7 - (nr & 0x07));
1325 *addr &= ~mask;
1326}
1327
Gu Zheng52aca072014-10-20 17:45:51 +08001328static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001329{
1330 int mask;
1331 int ret;
1332
1333 addr += (nr >> 3);
1334 mask = 1 << (7 - (nr & 0x07));
1335 ret = mask & *addr;
1336 *addr |= mask;
1337 return ret;
1338}
1339
Gu Zheng52aca072014-10-20 17:45:51 +08001340static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001341{
1342 int mask;
1343 int ret;
1344
1345 addr += (nr >> 3);
1346 mask = 1 << (7 - (nr & 0x07));
1347 ret = mask & *addr;
1348 *addr &= ~mask;
1349 return ret;
1350}
1351
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001352static inline void f2fs_change_bit(unsigned int nr, char *addr)
1353{
1354 int mask;
1355
1356 addr += (nr >> 3);
1357 mask = 1 << (7 - (nr & 0x07));
1358 *addr ^= mask;
1359}
1360
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001361/* used for f2fs_inode_info->flags */
1362enum {
1363 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001364 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001365 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001366 FI_INC_LINK, /* need to increment i_nlink */
1367 FI_ACL_MODE, /* indicate acl mode */
1368 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001369 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001370 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001371 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001372 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001373 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001374 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001375 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001376 FI_APPEND_WRITE, /* inode has appended data */
1377 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001378 FI_NEED_IPU, /* used for ipu per file */
1379 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001380 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001381 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001382 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001383 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001384 FI_INLINE_DOTS, /* indicate inline dot dentries */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001385};
1386
1387static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1388{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001389 if (!test_bit(flag, &fi->flags))
1390 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001391}
1392
1393static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1394{
1395 return test_bit(flag, &fi->flags);
1396}
1397
1398static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1399{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001400 if (test_bit(flag, &fi->flags))
1401 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001402}
1403
1404static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1405{
1406 fi->i_acl_mode = mode;
1407 set_inode_flag(fi, FI_ACL_MODE);
1408}
1409
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001410static inline void get_inline_info(struct f2fs_inode_info *fi,
1411 struct f2fs_inode *ri)
1412{
1413 if (ri->i_inline & F2FS_INLINE_XATTR)
1414 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001415 if (ri->i_inline & F2FS_INLINE_DATA)
1416 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001417 if (ri->i_inline & F2FS_INLINE_DENTRY)
1418 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001419 if (ri->i_inline & F2FS_DATA_EXIST)
1420 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001421 if (ri->i_inline & F2FS_INLINE_DOTS)
1422 set_inode_flag(fi, FI_INLINE_DOTS);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001423}
1424
1425static inline void set_raw_inline(struct f2fs_inode_info *fi,
1426 struct f2fs_inode *ri)
1427{
1428 ri->i_inline = 0;
1429
1430 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1431 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001432 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1433 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001434 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1435 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001436 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1437 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001438 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1439 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001440}
1441
Chao Yu987c7c32014-03-12 15:59:03 +08001442static inline int f2fs_has_inline_xattr(struct inode *inode)
1443{
1444 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1445}
1446
Jaegeuk Kimde936532013-08-12 21:08:03 +09001447static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1448{
Chao Yu987c7c32014-03-12 15:59:03 +08001449 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001450 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1451 return DEF_ADDRS_PER_INODE;
1452}
1453
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001454static inline void *inline_xattr_addr(struct page *page)
1455{
Chao Yu695fd1e2014-02-27 19:52:21 +08001456 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001457 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1458 F2FS_INLINE_XATTR_ADDRS]);
1459}
1460
1461static inline int inline_xattr_size(struct inode *inode)
1462{
Chao Yu987c7c32014-03-12 15:59:03 +08001463 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001464 return F2FS_INLINE_XATTR_ADDRS << 2;
1465 else
1466 return 0;
1467}
1468
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001469static inline int f2fs_has_inline_data(struct inode *inode)
1470{
1471 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1472}
1473
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001474static inline void f2fs_clear_inline_inode(struct inode *inode)
1475{
1476 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1477 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1478}
1479
1480static inline int f2fs_exist_data(struct inode *inode)
1481{
1482 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1483}
1484
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001485static inline int f2fs_has_inline_dots(struct inode *inode)
1486{
1487 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1488}
1489
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001490static inline bool f2fs_is_atomic_file(struct inode *inode)
1491{
1492 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1493}
1494
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001495static inline bool f2fs_is_volatile_file(struct inode *inode)
1496{
1497 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1498}
1499
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001500static inline bool f2fs_is_first_block_written(struct inode *inode)
1501{
1502 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1503}
1504
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001505static inline bool f2fs_is_drop_cache(struct inode *inode)
1506{
1507 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1508}
1509
Huajun Li1001b342013-11-10 23:13:16 +08001510static inline void *inline_data_addr(struct page *page)
1511{
Chao Yu695fd1e2014-02-27 19:52:21 +08001512 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001513 return (void *)&(ri->i_addr[1]);
1514}
1515
Chao Yu34d67de2014-09-24 18:15:19 +08001516static inline int f2fs_has_inline_dentry(struct inode *inode)
1517{
1518 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1519}
1520
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001521static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1522{
1523 if (!f2fs_has_inline_dentry(dir))
1524 kunmap(page);
1525}
1526
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001527static inline int is_file(struct inode *inode, int type)
1528{
1529 return F2FS_I(inode)->i_advise & type;
1530}
1531
1532static inline void set_file(struct inode *inode, int type)
1533{
1534 F2FS_I(inode)->i_advise |= type;
1535}
1536
1537static inline void clear_file(struct inode *inode, int type)
1538{
1539 F2FS_I(inode)->i_advise &= ~type;
1540}
1541
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001542static inline int f2fs_readonly(struct super_block *sb)
1543{
1544 return sb->s_flags & MS_RDONLY;
1545}
1546
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001547static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1548{
1549 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1550}
1551
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001552static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1553{
1554 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1555 sbi->sb->s_flags |= MS_RDONLY;
1556}
1557
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001558static inline bool is_dot_dotdot(const struct qstr *str)
1559{
1560 if (str->len == 1 && str->name[0] == '.')
1561 return true;
1562
1563 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1564 return true;
1565
1566 return false;
1567}
1568
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001569static inline bool f2fs_may_extent_tree(struct inode *inode)
1570{
1571 mode_t mode = inode->i_mode;
1572
1573 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1574 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1575 return false;
1576
1577 return S_ISREG(mode);
1578}
1579
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001580#define get_inode_mode(i) \
1581 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1582 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1583
Chao Yu267378d2014-04-23 14:10:24 +08001584/* get offset of first page in next direct node */
1585#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1586 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1587 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1588 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1589
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001590/*
1591 * file.c
1592 */
1593int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1594void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001595int truncate_blocks(struct inode *, u64, bool);
Chao Yu55f57d22015-07-16 18:19:02 +08001596void f2fs_truncate(struct inode *, bool);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001597int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001598int f2fs_setattr(struct dentry *, struct iattr *);
1599int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001600int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001601long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001602long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001603
1604/*
1605 * inode.c
1606 */
1607void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001608struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001609int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001610void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001611void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001612int f2fs_write_inode(struct inode *, struct writeback_control *);
1613void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001614void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001615
1616/*
1617 * namei.c
1618 */
1619struct dentry *f2fs_get_parent(struct dentry *child);
1620
1621/*
1622 * dir.c
1623 */
Chao Yudbeacf02014-09-24 18:17:04 +08001624extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001625void set_de_type(struct f2fs_dir_entry *, umode_t);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001626
1627struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1628 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001629bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07001630 unsigned int, struct f2fs_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001631void do_make_empty_dir(struct inode *, struct inode *,
1632 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001633struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001634 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001635void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001636int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001637void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001638struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1639 struct page **);
1640struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1641ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1642void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1643 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001644int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001645void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001646 const struct qstr *, f2fs_hash_t , unsigned int);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001647int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1648 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001649void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1650 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001651int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001652bool f2fs_empty_dir(struct inode *);
1653
Al Virob7f7a5e2013-01-25 16:15:43 -05001654static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1655{
David Howells2b0143b2015-03-17 22:25:59 +00001656 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001657 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001658}
1659
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001660/*
1661 * super.c
1662 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001663int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001664int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001665extern __printf(3, 4)
1666void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001667
1668/*
1669 * hash.c
1670 */
Gu Zhengeee61602014-06-24 18:21:23 +08001671f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001672
1673/*
1674 * node.c
1675 */
1676struct dnode_of_data;
1677struct node_info;
1678
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001679bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001680int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001681bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001682bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001683void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1684int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1685int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001686int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001687int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Gu Zheng58e674d2013-11-19 18:03:18 +08001688void remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001689struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001690struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001691void ra_node_page(struct f2fs_sb_info *, nid_t);
1692struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1693struct page *get_node_page_ra(struct page *, int);
1694void sync_inode_page(struct dnode_of_data *);
1695int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1696bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1697void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1698void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001699int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001700void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001701void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001702int recover_inode_page(struct f2fs_sb_info *, struct page *);
1703int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1704 struct f2fs_summary_block *);
1705void flush_nat_entries(struct f2fs_sb_info *);
1706int build_node_manager(struct f2fs_sb_info *);
1707void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001708int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001709void destroy_node_manager_caches(void);
1710
1711/*
1712 * segment.c
1713 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001714void register_inmem_page(struct inode *, struct page *);
Jaegeuk Kimedb27de2015-07-25 00:52:52 -07001715int commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001716void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001717void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001718int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001719int create_flush_cmd_control(struct f2fs_sb_info *);
1720void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001721void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001722void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001723void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001724void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001725bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001726int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001727void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001728int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001729struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001730void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001731void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001732void write_node_page(unsigned int, struct f2fs_io_info *);
1733void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1734void rewrite_data_page(struct f2fs_io_info *);
Chao Yu528e3452015-05-28 19:15:35 +08001735void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1736 block_t, block_t, unsigned char, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001737void allocate_data_block(struct f2fs_sb_info *, struct page *,
1738 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001739void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001740void write_data_summaries(struct f2fs_sb_info *, block_t);
1741void write_node_summaries(struct f2fs_sb_info *, block_t);
1742int lookup_journal_in_cursum(struct f2fs_summary_block *,
1743 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001744void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001745int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001746void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001747int __init create_segment_manager_caches(void);
1748void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001749
1750/*
1751 * checkpoint.c
1752 */
1753struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1754struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08001755bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Jaegeuk Kim4c521f492014-09-11 13:49:55 -07001756int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
Chao Yu635aee12014-12-08 15:02:52 +08001757void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001758long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001759void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1760void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001761void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001762bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001763int acquire_orphan_inode(struct f2fs_sb_info *);
1764void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001765void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1766void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08001767int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001768int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001769void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001770void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001771void remove_dirty_dir_inode(struct inode *);
1772void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001773void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001774void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001775int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001776void destroy_checkpoint_caches(void);
1777
1778/*
1779 * data.c
1780 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001781void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001782int f2fs_submit_page_bio(struct f2fs_io_info *);
1783void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08001784void set_data_blkaddr(struct dnode_of_data *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001785int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08001786int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Huajun Lib6009652013-11-10 23:13:18 +08001787int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07001788struct page *get_read_data_page(struct inode *, pgoff_t, int);
1789struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001790struct page *get_lock_data_page(struct inode *, pgoff_t);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001791struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001792int do_write_data_page(struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001793int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08001794void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1795int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001796
1797/*
1798 * gc.c
1799 */
1800int start_gc_thread(struct f2fs_sb_info *);
1801void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001802block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Jaegeuk Kim408e9372013-01-03 17:55:52 +09001803int f2fs_gc(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001804void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001805
1806/*
1807 * recovery.c
1808 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001809int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001810bool space_for_roll_forward(struct f2fs_sb_info *);
1811
1812/*
1813 * debug.c
1814 */
1815#ifdef CONFIG_F2FS_STAT_FS
1816struct f2fs_stat_info {
1817 struct list_head stat_list;
1818 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001819 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1820 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu4bf6fd92015-02-05 17:58:28 +08001821 int hit_ext, total_ext, ext_tree, ext_node;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001822 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001823 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001824 int total_count, utilization;
Chao Yud5e8f6c2015-07-15 17:28:53 +08001825 int bg_gc, inmem_pages, wb_pages;
1826 int inline_xattr, inline_inode, inline_dir;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001827 unsigned int valid_count, valid_node_count, valid_inode_count;
1828 unsigned int bimodal, avg_vblocks;
1829 int util_free, util_valid, util_invalid;
1830 int rsvd_segs, overp_segs;
1831 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001832 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001833 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09001834 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001835 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09001836 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001837 int curseg[NR_CURSEG_TYPE];
1838 int cursec[NR_CURSEG_TYPE];
1839 int curzone[NR_CURSEG_TYPE];
1840
1841 unsigned int segment_count[2];
1842 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001843 unsigned int inplace_count;
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -08001844 unsigned base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001845};
1846
Gu Zheng963d4f72013-07-12 14:47:11 +08001847static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1848{
Chris Fries6c311ec2014-01-17 14:44:39 -06001849 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001850}
1851
Changman Lee942e0be2014-02-13 15:12:29 +09001852#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001853#define stat_inc_call_count(si) ((si)->call_count++)
1854#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1855#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1856#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
Chao Yu727edac2015-07-15 17:29:49 +08001857#define stat_inc_total_hit(sbi) (atomic_inc(&(sbi)->total_hit_ext))
1858#define stat_inc_read_hit(sbi) (atomic_inc(&(sbi)->read_hit_ext))
Chao Yud5e8f6c2015-07-15 17:28:53 +08001859#define stat_inc_inline_xattr(inode) \
1860 do { \
1861 if (f2fs_has_inline_xattr(inode)) \
1862 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1863 } while (0)
1864#define stat_dec_inline_xattr(inode) \
1865 do { \
1866 if (f2fs_has_inline_xattr(inode)) \
1867 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1868 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001869#define stat_inc_inline_inode(inode) \
1870 do { \
1871 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001872 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001873 } while (0)
1874#define stat_dec_inline_inode(inode) \
1875 do { \
1876 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001877 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001878 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001879#define stat_inc_inline_dir(inode) \
1880 do { \
1881 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001882 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001883 } while (0)
1884#define stat_dec_inline_dir(inode) \
1885 do { \
1886 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001887 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001888 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001889#define stat_inc_seg_type(sbi, curseg) \
1890 ((sbi)->segment_count[(curseg)->alloc_type]++)
1891#define stat_inc_block_count(sbi, curseg) \
1892 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001893#define stat_inc_inplace_blocks(sbi) \
1894 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09001895#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001896 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001897 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001898 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001899 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001900 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001901 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1902 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001903 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001904 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1905 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001906 } while (0)
1907
1908#define stat_inc_tot_blk_count(si, blks) \
1909 (si->tot_blks += (blks))
1910
Changman Leee1235982014-12-23 08:37:39 +09001911#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001912 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001913 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001914 stat_inc_tot_blk_count(si, blks); \
1915 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001916 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001917 } while (0)
1918
Changman Leee1235982014-12-23 08:37:39 +09001919#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001920 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001921 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001922 stat_inc_tot_blk_count(si, blks); \
1923 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001924 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001925 } while (0)
1926
1927int f2fs_build_stats(struct f2fs_sb_info *);
1928void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001929void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001930void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001931#else
Changman Lee942e0be2014-02-13 15:12:29 +09001932#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001933#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001934#define stat_inc_bggc_count(si)
1935#define stat_inc_dirty_dir(sbi)
1936#define stat_dec_dirty_dir(sbi)
1937#define stat_inc_total_hit(sb)
1938#define stat_inc_read_hit(sb)
Chao Yud5e8f6c2015-07-15 17:28:53 +08001939#define stat_inc_inline_xattr(inode)
1940#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001941#define stat_inc_inline_inode(inode)
1942#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001943#define stat_inc_inline_dir(inode)
1944#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001945#define stat_inc_seg_type(sbi, curseg)
1946#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09001947#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09001948#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001949#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09001950#define stat_inc_data_blk_count(sbi, blks, gc_type)
1951#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001952
1953static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1954static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001955static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09001956static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001957#endif
1958
1959extern const struct file_operations f2fs_dir_operations;
1960extern const struct file_operations f2fs_file_operations;
1961extern const struct inode_operations f2fs_file_inode_operations;
1962extern const struct address_space_operations f2fs_dblock_aops;
1963extern const struct address_space_operations f2fs_node_aops;
1964extern const struct address_space_operations f2fs_meta_aops;
1965extern const struct inode_operations f2fs_dir_inode_operations;
1966extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07001967extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001968extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08001969extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08001970
Huajun Lie18c65b2013-11-10 23:13:19 +08001971/*
1972 * inline.c
1973 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07001974bool f2fs_may_inline_data(struct inode *);
1975bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001976void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08001977bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08001978int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001979int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1980int f2fs_convert_inline_inode(struct inode *);
1981int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07001982bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001983struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
1984 struct f2fs_filename *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08001985struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1986int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001987int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
1988 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08001989void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1990 struct inode *, struct inode *);
1991bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07001992int f2fs_read_inline_dir(struct file *, struct dir_context *,
1993 struct f2fs_str *);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07001994
1995/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07001996 * shrinker.c
1997 */
1998unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
1999unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2000void f2fs_join_shrinker(struct f2fs_sb_info *);
2001void f2fs_leave_shrinker(struct f2fs_sb_info *);
2002
2003/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002004 * extent_cache.c
2005 */
2006unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2007void f2fs_drop_largest_extent(struct inode *, pgoff_t);
2008void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2009unsigned int f2fs_destroy_extent_node(struct inode *);
2010void f2fs_destroy_extent_tree(struct inode *);
2011bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2012void f2fs_update_extent_cache(struct dnode_of_data *);
2013void init_extent_cache_info(struct f2fs_sb_info *);
2014int __init create_extent_cache(void);
2015void destroy_extent_cache(void);
2016
2017/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002018 * crypto support
2019 */
2020static inline int f2fs_encrypted_inode(struct inode *inode)
2021{
2022#ifdef CONFIG_F2FS_FS_ENCRYPTION
2023 return file_is_encrypt(inode);
2024#else
2025 return 0;
2026#endif
2027}
2028
2029static inline void f2fs_set_encrypted_inode(struct inode *inode)
2030{
2031#ifdef CONFIG_F2FS_FS_ENCRYPTION
2032 file_set_encrypt(inode);
2033#endif
2034}
2035
2036static inline bool f2fs_bio_encrypted(struct bio *bio)
2037{
2038#ifdef CONFIG_F2FS_FS_ENCRYPTION
2039 return unlikely(bio->bi_private != NULL);
2040#else
2041 return false;
2042#endif
2043}
2044
2045static inline int f2fs_sb_has_crypto(struct super_block *sb)
2046{
2047#ifdef CONFIG_F2FS_FS_ENCRYPTION
2048 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2049#else
2050 return 0;
2051#endif
2052}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002053
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002054static inline bool f2fs_may_encrypt(struct inode *inode)
2055{
2056#ifdef CONFIG_F2FS_FS_ENCRYPTION
2057 mode_t mode = inode->i_mode;
2058
2059 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2060#else
2061 return 0;
2062#endif
2063}
2064
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002065/* crypto_policy.c */
2066int f2fs_is_child_context_consistent_with_parent(struct inode *,
2067 struct inode *);
2068int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2069int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2070int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002071
2072/* crypt.c */
Jaegeuk Kim8bacf6de2015-05-12 13:26:54 -07002073extern struct kmem_cache *f2fs_crypt_info_cachep;
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002074bool f2fs_valid_contents_enc_mode(uint32_t);
2075uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2076struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2077void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2078struct page *f2fs_encrypt(struct inode *, struct page *);
2079int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2080int f2fs_decrypt_one(struct inode *, struct page *);
2081void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2082
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002083/* crypto_key.c */
Jaegeuk Kim26bf3dc2015-05-19 22:26:54 -07002084void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002085int _f2fs_get_encryption_info(struct inode *inode);
2086
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002087/* crypto_fname.c */
2088bool f2fs_valid_filenames_enc_mode(uint32_t);
2089u32 f2fs_fname_crypto_round_up(u32, u32);
2090int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2091int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2092 const struct f2fs_str *, struct f2fs_str *);
2093int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2094 struct f2fs_str *);
2095
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002096#ifdef CONFIG_F2FS_FS_ENCRYPTION
2097void f2fs_restore_and_release_control_page(struct page **);
2098void f2fs_restore_control_page(struct page *);
2099
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002100int __init f2fs_init_crypto(void);
2101int f2fs_crypto_initialize(void);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002102void f2fs_exit_crypto(void);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002103
2104int f2fs_has_encryption_key(struct inode *);
2105
2106static inline int f2fs_get_encryption_info(struct inode *inode)
2107{
2108 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2109
2110 if (!ci ||
2111 (ci->ci_keyring_key &&
2112 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2113 (1 << KEY_FLAG_REVOKED) |
2114 (1 << KEY_FLAG_DEAD)))))
2115 return _f2fs_get_encryption_info(inode);
2116 return 0;
2117}
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002118
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002119void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2120int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2121 int lookup, struct f2fs_filename *);
2122void f2fs_fname_free_filename(struct f2fs_filename *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002123#else
2124static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2125static inline void f2fs_restore_control_page(struct page *p) { }
2126
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002127static inline int __init f2fs_init_crypto(void) { return 0; }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002128static inline void f2fs_exit_crypto(void) { }
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002129
2130static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2131static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002132static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2133
2134static inline int f2fs_fname_setup_filename(struct inode *dir,
2135 const struct qstr *iname,
2136 int lookup, struct f2fs_filename *fname)
2137{
2138 memset(fname, 0, sizeof(struct f2fs_filename));
2139 fname->usr_fname = iname;
2140 fname->disk_name.name = (unsigned char *)iname->name;
2141 fname->disk_name.len = iname->len;
2142 return 0;
2143}
2144
2145static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002146#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002147#endif