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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 Kim39307a82015-09-22 13:50:47 -070022#include <linux/vmalloc.h>
Jaegeuk Kim740432f2015-08-14 11:43:56 -070023#include <linux/bio.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090024
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090025#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070026#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090027#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090028#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070029#define f2fs_bug_on(sbi, condition) \
30 do { \
31 if (unlikely(condition)) { \
32 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080033 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070034 } \
35 } while (0)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090036#define f2fs_down_write(x, y) down_write(x)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090037#endif
38
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090039/*
40 * For mount options
41 */
42#define F2FS_MOUNT_BG_GC 0x00000001
43#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
44#define F2FS_MOUNT_DISCARD 0x00000004
45#define F2FS_MOUNT_NOHEAP 0x00000008
46#define F2FS_MOUNT_XATTR_USER 0x00000010
47#define F2FS_MOUNT_POSIX_ACL 0x00000020
48#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +090049#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +080050#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +080051#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
52#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
53#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -070054#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +080055#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim6aefd932015-10-05 11:02:54 -070056#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090057
58#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
59#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
60#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
61
62#define ver_after(a, b) (typecheck(unsigned long long, a) && \
63 typecheck(unsigned long long, b) && \
64 ((long long)((a) - (b)) > 0))
65
Jaegeuk Kima9841c42013-05-24 12:41:04 +090066typedef u32 block_t; /*
67 * should not change u32, since it is the on-disk block
68 * address format, __le32.
69 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090070typedef u32 nid_t;
71
72struct f2fs_mount_info {
73 unsigned int opt;
74};
75
Jaegeuk Kimcde4de12015-04-20 13:57:51 -070076#define F2FS_FEATURE_ENCRYPT 0x0001
77
Jaegeuk Kim76f105a2015-04-13 15:10:36 -070078#define F2FS_HAS_FEATURE(sb, mask) \
79 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
80#define F2FS_SET_FEATURE(sb, mask) \
81 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
82#define F2FS_CLEAR_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
84
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090085#define CRCPOLY_LE 0xedb88320
86
87static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090088{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090089 unsigned char *p = (unsigned char *)buf;
90 __u32 crc = F2FS_SUPER_MAGIC;
91 int i;
92
93 while (len--) {
94 crc ^= *p++;
95 for (i = 0; i < 8; i++)
96 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
97 }
98 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090099}
100
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900101static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900102{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900103 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900104}
105
106/*
107 * For checkpoint manager
108 */
109enum {
110 NAT_BITMAP,
111 SIT_BITMAP
112};
113
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700114enum {
115 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800116 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700117 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700118 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700119 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700120};
121
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800122#define DEF_BATCHED_TRIM_SECTIONS 32
123#define BATCHED_TRIM_SEGMENTS(sbi) \
124 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700125#define BATCHED_TRIM_BLOCKS(sbi) \
126 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700127#define DEF_CP_INTERVAL 60 /* 60 secs */
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800128
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700129struct cp_control {
130 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700131 __u64 trim_start;
132 __u64 trim_end;
133 __u64 trim_minlen;
134 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700135};
136
Chao Yu662befd2014-02-07 16:11:53 +0800137/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800138 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800139 */
140enum {
141 META_CP,
142 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800143 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700144 META_SSA,
145 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800146};
147
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700148/* for the list of ino */
149enum {
150 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700151 APPEND_INO, /* for append ino list */
152 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700153 MAX_INO_ENTRY, /* max. list */
154};
155
156struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900157 struct list_head list; /* list head */
158 nid_t ino; /* inode number */
159};
160
Chao Yu06292072014-12-29 15:56:18 +0800161/*
162 * for the list of directory inodes or gc inodes.
163 * NOTE: there are two slab users for this structure, if we add/modify/delete
164 * fields in structure for one of slab users, it may affect fields or size of
165 * other one, in this condition, it's better to split both of slab and related
166 * data structure.
167 */
168struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900169 struct list_head list; /* list head */
170 struct inode *inode; /* vfs inode pointer */
171};
172
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900173/* for the list of blockaddresses to be discarded */
174struct discard_entry {
175 struct list_head list; /* list head */
176 block_t blkaddr; /* block address to be discarded */
177 int len; /* # of consecutive blocks of the discard */
178};
179
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900180/* for the list of fsync inodes, used only during recovery */
181struct fsync_inode_entry {
182 struct list_head list; /* list head */
183 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700184 block_t blkaddr; /* block address locating the last fsync */
185 block_t last_dentry; /* block address locating the last dentry */
186 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900187};
188
189#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
190#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
191
192#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
193#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
194#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
195#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
196
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700197#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
198#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
199
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900200static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
201{
202 int before = nats_in_cursum(rs);
203 rs->n_nats = cpu_to_le16(before + i);
204 return before;
205}
206
207static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
208{
209 int before = sits_in_cursum(rs);
210 rs->n_sits = cpu_to_le16(before + i);
211 return before;
212}
213
Chao Yu184a5cd2014-09-04 18:13:01 +0800214static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
215 int type)
216{
217 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700218 return size <= MAX_NAT_JENTRIES(sum);
219 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800220}
221
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900222/*
Namjae Jeone9750822013-02-04 23:41:41 +0900223 * ioctl commands
224 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700225#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
226#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800227#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700228
229#define F2FS_IOCTL_MAGIC 0xf5
230#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
231#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700232#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800233#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
234#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800235#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Chao Yu456b88e2015-10-05 22:24:19 +0800236#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
Namjae Jeone9750822013-02-04 23:41:41 +0900237
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700238#define F2FS_IOC_SET_ENCRYPTION_POLICY \
239 _IOR('f', 19, struct f2fs_encryption_policy)
240#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
241 _IOW('f', 20, __u8[16])
242#define F2FS_IOC_GET_ENCRYPTION_POLICY \
243 _IOW('f', 21, struct f2fs_encryption_policy)
244
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800245/*
246 * should be same as XFS_IOC_GOINGDOWN.
247 * Flags for going down operation used by FS_IOC_GOINGDOWN
248 */
249#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
250#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
251#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
252#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
Jaegeuk Kimc912a822015-10-07 09:46:37 -0700253#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800254
Namjae Jeone9750822013-02-04 23:41:41 +0900255#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
256/*
257 * ioctl commands in 32 bit emulation
258 */
259#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
260#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
261#endif
262
263/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900264 * For INODE and NODE manager
265 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700266/* for directory operations */
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -0700267struct f2fs_str {
268 unsigned char *name;
269 u32 len;
270};
271
272struct f2fs_filename {
273 const struct qstr *usr_fname;
274 struct f2fs_str disk_name;
275 f2fs_hash_t hash;
276#ifdef CONFIG_F2FS_FS_ENCRYPTION
277 struct f2fs_str crypto_buf;
278#endif
279};
280
281#define FSTR_INIT(n, l) { .name = n, .len = l }
282#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
283#define fname_name(p) ((p)->disk_name.name)
284#define fname_len(p) ((p)->disk_name.len)
285
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700286struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700287 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700288 const void *bitmap;
289 struct f2fs_dir_entry *dentry;
290 __u8 (*filename)[F2FS_SLOT_LEN];
291 int max;
292};
293
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700294static inline void make_dentry_ptr(struct inode *inode,
295 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700296{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700297 d->inode = inode;
298
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700299 if (type == 1) {
300 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
301 d->max = NR_DENTRY_IN_BLOCK;
302 d->bitmap = &t->dentry_bitmap;
303 d->dentry = t->dentry;
304 d->filename = t->filename;
305 } else {
306 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
307 d->max = NR_INLINE_DENTRY;
308 d->bitmap = &t->dentry_bitmap;
309 d->dentry = t->dentry;
310 d->filename = t->filename;
311 }
312}
313
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900314/*
315 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
316 * as its node offset to distinguish from index node blocks.
317 * But some bits are used to mark the node block.
318 */
319#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
320 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900321enum {
322 ALLOC_NODE, /* allocate a new node page if needed */
323 LOOKUP_NODE, /* look up a node without readahead */
324 LOOKUP_NODE_RA, /*
325 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800326 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900327 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900328};
329
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700330#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900331
Chao Yu817202d92014-04-28 17:59:43 +0800332#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
333
Chao Yu13054c52015-02-05 17:52:58 +0800334/* vector size for gang look-up from extent cache that consists of radix tree */
335#define EXT_TREE_VEC_SIZE 64
336
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900337/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800338#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
339
340/* number of extent info in extent cache we try to shrink */
341#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900342
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900343struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800344 unsigned int fofs; /* start offset in a file */
345 u32 blk; /* start block address of the extent */
346 unsigned int len; /* length of the extent */
347};
348
349struct extent_node {
350 struct rb_node rb_node; /* rb node located in rb-tree */
351 struct list_head list; /* node in global extent list of sbi */
352 struct extent_info ei; /* extent info */
353};
354
355struct extent_tree {
356 nid_t ino; /* inode number */
357 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800358 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700359 struct extent_info largest; /* largested extent info */
Chao Yu13054c52015-02-05 17:52:58 +0800360 rwlock_t lock; /* protect extent info rb-tree */
361 atomic_t refcount; /* reference count of rb-tree */
362 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900363};
364
365/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700366 * This structure is taken from ext4_map_blocks.
367 *
368 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
369 */
370#define F2FS_MAP_NEW (1 << BH_New)
371#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700372#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
373#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
374 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700375
376struct f2fs_map_blocks {
377 block_t m_pblk;
378 block_t m_lblk;
379 unsigned int m_len;
380 unsigned int m_flags;
381};
382
Chao Yue2b4e2b2015-08-19 19:11:19 +0800383/* for flag in get_data_block */
384#define F2FS_GET_BLOCK_READ 0
385#define F2FS_GET_BLOCK_DIO 1
386#define F2FS_GET_BLOCK_FIEMAP 2
387#define F2FS_GET_BLOCK_BMAP 3
388
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700389/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900390 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
391 */
392#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900393#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700394#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700395#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900396
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700397#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
398#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
399#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
400#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
401#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
402#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700403#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
404#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
405#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700406#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
407#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700408
409/* Encryption algorithms */
410#define F2FS_ENCRYPTION_MODE_INVALID 0
411#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
412#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
413#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
414#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700415
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700416#include "f2fs_crypto.h"
417
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900418#define DEF_DIR_LEVEL 0
419
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900420struct f2fs_inode_info {
421 struct inode vfs_inode; /* serve a vfs inode */
422 unsigned long i_flags; /* keep an inode flags for ioctl */
423 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900424 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900425 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900426 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900427 umode_t i_acl_mode; /* keep file acl mode temporarily */
428
429 /* Use below internally in f2fs*/
430 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900431 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700432 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900433 f2fs_hash_t chash; /* hash value of given file name */
434 unsigned int clevel; /* maximum level of given file name */
435 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900436 unsigned long long xattr_ver; /* cp version of xattr modification */
Chao Yu06292072014-12-29 15:56:18 +0800437 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700438
439 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
440 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700441
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700442 struct extent_tree *extent_tree; /* cached extent_tree entry */
443
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700444#ifdef CONFIG_F2FS_FS_ENCRYPTION
445 /* Encryption params */
446 struct f2fs_crypt_info *i_crypt_info;
447#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900448};
449
450static inline void get_extent_info(struct extent_info *ext,
451 struct f2fs_extent i_ext)
452{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900453 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800454 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900455 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900456}
457
458static inline void set_raw_extent(struct extent_info *ext,
459 struct f2fs_extent *i_ext)
460{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900461 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800462 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900463 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900464}
465
Chao Yu429511c2015-02-05 17:54:31 +0800466static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
467 u32 blk, unsigned int len)
468{
469 ei->fofs = fofs;
470 ei->blk = blk;
471 ei->len = len;
472}
473
Chao Yu0bdee482015-03-19 19:27:51 +0800474static inline bool __is_extent_same(struct extent_info *ei1,
475 struct extent_info *ei2)
476{
477 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
478 ei1->len == ei2->len);
479}
480
Chao Yu429511c2015-02-05 17:54:31 +0800481static inline bool __is_extent_mergeable(struct extent_info *back,
482 struct extent_info *front)
483{
484 return (back->fofs + back->len == front->fofs &&
485 back->blk + back->len == front->blk);
486}
487
488static inline bool __is_back_mergeable(struct extent_info *cur,
489 struct extent_info *back)
490{
491 return __is_extent_mergeable(back, cur);
492}
493
494static inline bool __is_front_mergeable(struct extent_info *cur,
495 struct extent_info *front)
496{
497 return __is_extent_mergeable(cur, front);
498}
499
Chao Yu4abd3f52015-09-22 21:07:47 +0800500static inline void __try_update_largest_extent(struct extent_tree *et,
501 struct extent_node *en)
502{
503 if (en->ei.len > et->largest.len)
504 et->largest = en->ei;
505}
506
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900507struct f2fs_nm_info {
508 block_t nat_blkaddr; /* base disk address of NAT */
509 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900510 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900511 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900512 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800513 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900514
515 /* NAT cache management */
516 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700517 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800518 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900519 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700520 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800521 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900522
523 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900524 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900525 struct list_head free_nid_list; /* a list for free nids */
526 spinlock_t free_nid_list_lock; /* protect free nid list */
527 unsigned int fcnt; /* the number of free node id */
528 struct mutex build_lock; /* lock for build free nids */
529
530 /* for checkpoint */
531 char *nat_bitmap; /* NAT bitmap pointer */
532 int bitmap_size; /* bitmap size */
533};
534
535/*
536 * this structure is used as one of function parameters.
537 * all the information are dedicated to a given direct node block determined
538 * by the data offset in a file.
539 */
540struct dnode_of_data {
541 struct inode *inode; /* vfs inode pointer */
542 struct page *inode_page; /* its inode page, NULL is possible */
543 struct page *node_page; /* cached direct node page */
544 nid_t nid; /* node id of the direct node block */
545 unsigned int ofs_in_node; /* data offset in the node page */
546 bool inode_page_locked; /* inode page is locked or not */
547 block_t data_blkaddr; /* block address of the node block */
548};
549
550static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
551 struct page *ipage, struct page *npage, nid_t nid)
552{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900553 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900554 dn->inode = inode;
555 dn->inode_page = ipage;
556 dn->node_page = npage;
557 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900558}
559
560/*
561 * For SIT manager
562 *
563 * By default, there are 6 active log areas across the whole main area.
564 * When considering hot and cold data separation to reduce cleaning overhead,
565 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
566 * respectively.
567 * In the current design, you should not change the numbers intentionally.
568 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
569 * logs individually according to the underlying devices. (default: 6)
570 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
571 * data and 8 for node logs.
572 */
573#define NR_CURSEG_DATA_TYPE (3)
574#define NR_CURSEG_NODE_TYPE (3)
575#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
576
577enum {
578 CURSEG_HOT_DATA = 0, /* directory entry blocks */
579 CURSEG_WARM_DATA, /* data blocks */
580 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
581 CURSEG_HOT_NODE, /* direct node blocks of directory files */
582 CURSEG_WARM_NODE, /* direct node blocks of normal files */
583 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800584 NO_CHECK_TYPE,
585 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900586};
587
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900588struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900589 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800590 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900591 int ret;
592};
593
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800594struct flush_cmd_control {
595 struct task_struct *f2fs_issue_flush; /* flush thread */
596 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800597 struct llist_head issue_list; /* list for command issue */
598 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800599};
600
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900601struct f2fs_sm_info {
602 struct sit_info *sit_info; /* whole segment information */
603 struct free_segmap_info *free_info; /* free segment information */
604 struct dirty_seglist_info *dirty_info; /* dirty segment information */
605 struct curseg_info *curseg_array; /* active segment information */
606
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900607 block_t seg0_blkaddr; /* block address of 0'th segment */
608 block_t main_blkaddr; /* start block address of main area */
609 block_t ssa_blkaddr; /* start block address of SSA area */
610
611 unsigned int segment_count; /* total # of segments */
612 unsigned int main_segments; /* # of segments in main area */
613 unsigned int reserved_segments; /* # of reserved segments */
614 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900615
616 /* a threshold to reclaim prefree segments */
617 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900618
619 /* for small discard management */
620 struct list_head discard_list; /* 4KB discard list */
621 int nr_discards; /* # of discards in the list */
622 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900623
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800624 /* for batched trimming */
625 unsigned int trim_sections; /* # of sections to trim */
626
Chao Yu184a5cd2014-09-04 18:13:01 +0800627 struct list_head sit_entry_set; /* sit entry set list */
628
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900629 unsigned int ipu_policy; /* in-place-update policy */
630 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700631 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900632
633 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800634 struct flush_cmd_control *cmd_control_info;
635
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900636};
637
638/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900639 * For superblock
640 */
641/*
642 * COUNT_TYPE for monitoring
643 *
644 * f2fs monitors the number of several block types such as on-writeback,
645 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
646 */
647enum count_type {
648 F2FS_WRITEBACK,
649 F2FS_DIRTY_DENTS,
650 F2FS_DIRTY_NODES,
651 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800652 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900653 NR_COUNT_TYPE,
654};
655
656/*
arter97e1c42042014-08-06 23:22:50 +0900657 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900658 * The available types are:
659 * DATA User data pages. It operates as async mode.
660 * NODE Node pages. It operates as async mode.
661 * META FS metadata pages such as SIT, NAT, CP.
662 * NR_PAGE_TYPE The number of page types.
663 * META_FLUSH Make sure the previous pages are written
664 * with waiting the bio's completion
665 * ... Only can be used with META.
666 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900667#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900668enum page_type {
669 DATA,
670 NODE,
671 META,
672 NR_PAGE_TYPE,
673 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700674 INMEM, /* the below types are used by tracepoints only. */
675 INMEM_DROP,
676 IPU,
677 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900678};
679
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900680struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700681 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800682 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
683 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800684 block_t blk_addr; /* block address to be written */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700685 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700686 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900687};
688
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900689#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900690struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900691 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900692 struct bio *bio; /* bios to merge */
693 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900694 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800695 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900696};
697
Chao Yu67298802014-11-18 11:18:36 +0800698/* for inner inode cache management */
699struct inode_management {
700 struct radix_tree_root ino_root; /* ino entry array */
701 spinlock_t ino_lock; /* for ino entry lock */
702 struct list_head ino_list; /* inode list head */
703 unsigned long ino_num; /* number of entries */
704};
705
Chao Yucaf00472015-01-28 17:48:42 +0800706/* For s_flag in struct f2fs_sb_info */
707enum {
708 SBI_IS_DIRTY, /* dirty flag for checkpoint */
709 SBI_IS_CLOSE, /* specify unmounting */
710 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
711 SBI_POR_DOING, /* recovery is doing or not */
712};
713
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900714struct f2fs_sb_info {
715 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900716 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900717 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
718 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800719 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900720
721 /* for node-related operations */
722 struct f2fs_nm_info *nm_info; /* node manager */
723 struct inode *node_inode; /* cache node blocks */
724
725 /* for segment-related operations */
726 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900727
728 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800729 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900730 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900731
732 /* for checkpoint */
733 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
734 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900735 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800736 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800737 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim5463e7c2015-04-21 10:40:54 -0700738 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900739 wait_queue_head_t cp_wait;
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700740 long cp_expires, cp_interval; /* next expected periodic cp */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900741
Chao Yu67298802014-11-18 11:18:36 +0800742 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700743
744 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800745 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900746
747 /* for directory inode management */
748 struct list_head dir_inode_list; /* dir inode list */
749 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900750
Chao Yu13054c52015-02-05 17:52:58 +0800751 /* for extent tree cache */
752 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
753 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
754 struct list_head extent_list; /* lru list for shrinker */
755 spinlock_t extent_lock; /* locking extent lru list */
756 int total_ext_tree; /* extent tree count */
757 atomic_t total_ext_node; /* extent info count */
758
arter97e1c42042014-08-06 23:22:50 +0900759 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900760 unsigned int log_sectors_per_block; /* log2 sectors per block */
761 unsigned int log_blocksize; /* log2 block size */
762 unsigned int blocksize; /* block size */
763 unsigned int root_ino_num; /* root inode number*/
764 unsigned int node_ino_num; /* node inode number*/
765 unsigned int meta_ino_num; /* meta inode number*/
766 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
767 unsigned int blocks_per_seg; /* blocks per segment */
768 unsigned int segs_per_sec; /* segments per section */
769 unsigned int secs_per_zone; /* sections per zone */
770 unsigned int total_sections; /* total section count */
771 unsigned int total_node_count; /* total node block count */
772 unsigned int total_valid_node_count; /* valid node block count */
773 unsigned int total_valid_inode_count; /* valid inode count */
774 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900775 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900776
777 block_t user_block_count; /* # of user blocks */
778 block_t total_valid_block_count; /* # of valid blocks */
779 block_t alloc_valid_block_count; /* # of allocated blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700780 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900781 block_t last_valid_block_count; /* for recovery */
782 u32 s_next_generation; /* for NFS support */
783 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
784
785 struct f2fs_mount_info mount_opt; /* mount options */
786
787 /* for cleaning operations */
788 struct mutex gc_mutex; /* mutex for GC */
789 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900790 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900791
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900792 /* maximum # of trials to find a victim segment for SSR and GC */
793 unsigned int max_victim_search;
794
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900795 /*
796 * for stat information.
797 * one is for the LFS mode, and the other is for the SSR mode.
798 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900799#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900800 struct f2fs_stat_info *stat_info; /* FS status information */
801 unsigned int segment_count[2]; /* # of allocated segments */
802 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900803 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800804 atomic64_t total_hit_ext; /* # of lookup extent cache */
805 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
806 atomic64_t read_hit_largest; /* # of hit largest extent node */
807 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800808 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800809 atomic_t inline_inode; /* # of inline_data inodes */
810 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900811 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900812 unsigned int n_dirty_dirs; /* # of dir inodes */
813#endif
814 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900815 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900816
817 /* For sysfs suppport */
818 struct kobject s_kobj;
819 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700820
821 /* For shrinker support */
822 struct list_head s_list;
823 struct mutex umount_mutex;
824 unsigned int shrinker_run_no;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900825};
826
827/*
828 * Inline functions
829 */
830static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
831{
832 return container_of(inode, struct f2fs_inode_info, vfs_inode);
833}
834
835static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
836{
837 return sb->s_fs_info;
838}
839
Jaegeuk Kim40813632014-09-02 15:31:18 -0700840static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
841{
842 return F2FS_SB(inode->i_sb);
843}
844
845static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
846{
847 return F2FS_I_SB(mapping->host);
848}
849
850static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
851{
852 return F2FS_M_SB(page->mapping);
853}
854
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900855static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
856{
857 return (struct f2fs_super_block *)(sbi->raw_super);
858}
859
860static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
861{
862 return (struct f2fs_checkpoint *)(sbi->ckpt);
863}
864
Gu Zheng45590712013-07-15 17:57:38 +0800865static inline struct f2fs_node *F2FS_NODE(struct page *page)
866{
867 return (struct f2fs_node *)page_address(page);
868}
869
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900870static inline struct f2fs_inode *F2FS_INODE(struct page *page)
871{
872 return &((struct f2fs_node *)page_address(page))->i;
873}
874
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900875static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
876{
877 return (struct f2fs_nm_info *)(sbi->nm_info);
878}
879
880static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
881{
882 return (struct f2fs_sm_info *)(sbi->sm_info);
883}
884
885static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
886{
887 return (struct sit_info *)(SM_I(sbi)->sit_info);
888}
889
890static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
891{
892 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
893}
894
895static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
896{
897 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
898}
899
Gu Zheng9df27d92014-01-20 18:37:04 +0800900static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
901{
902 return sbi->meta_inode->i_mapping;
903}
904
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900905static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
906{
907 return sbi->node_inode->i_mapping;
908}
909
Chao Yucaf00472015-01-28 17:48:42 +0800910static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900911{
Chao Yucaf00472015-01-28 17:48:42 +0800912 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900913}
914
Chao Yucaf00472015-01-28 17:48:42 +0800915static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900916{
Chao Yucaf00472015-01-28 17:48:42 +0800917 sbi->s_flag |= (0x01 << type);
918}
919
920static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
921{
922 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900923}
924
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900925static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
926{
927 return le64_to_cpu(cp->checkpoint_ver);
928}
929
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900930static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
931{
932 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
933 return ckpt_flags & f;
934}
935
936static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
937{
938 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
939 ckpt_flags |= f;
940 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
941}
942
943static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
944{
945 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
946 ckpt_flags &= (~f);
947 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
948}
949
Gu Zhenge4795562013-09-27 18:08:30 +0800950static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900951{
Gu Zhenge4795562013-09-27 18:08:30 +0800952 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900953}
954
Gu Zhenge4795562013-09-27 18:08:30 +0800955static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900956{
Gu Zhenge4795562013-09-27 18:08:30 +0800957 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900958}
959
Gu Zhenge4795562013-09-27 18:08:30 +0800960static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900961{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900962 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900963}
964
Gu Zhenge4795562013-09-27 18:08:30 +0800965static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900966{
Gu Zhenge4795562013-09-27 18:08:30 +0800967 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900968}
969
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800970static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
971{
972 int reason = CP_SYNC;
973
974 if (test_opt(sbi, FASTBOOT))
975 reason = CP_FASTBOOT;
976 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
977 reason = CP_UMOUNT;
978 return reason;
979}
980
981static inline bool __remain_node_summaries(int reason)
982{
983 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
984}
985
986static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
987{
988 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
989 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
990}
991
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900992/*
993 * Check whether the given nid is within node id range.
994 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900995static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900996{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800997 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
998 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800999 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001000 return -EINVAL;
1001 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001002}
1003
1004#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1005
1006/*
1007 * Check whether the inode has blocks or not
1008 */
1009static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1010{
1011 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001012 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001013 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001014 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001015}
1016
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001017static inline bool f2fs_has_xattr_block(unsigned int ofs)
1018{
1019 return ofs == XATTR_NODE_OFFSET;
1020}
1021
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001022static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1023 struct inode *inode, blkcnt_t count)
1024{
1025 block_t valid_block_count;
1026
1027 spin_lock(&sbi->stat_lock);
1028 valid_block_count =
1029 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +08001030 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001031 spin_unlock(&sbi->stat_lock);
1032 return false;
1033 }
1034 inode->i_blocks += count;
1035 sbi->total_valid_block_count = valid_block_count;
1036 sbi->alloc_valid_block_count += (block_t)count;
1037 spin_unlock(&sbi->stat_lock);
1038 return true;
1039}
1040
Gu Zhengda19b0d2013-11-19 18:03:27 +08001041static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001042 struct inode *inode,
1043 blkcnt_t count)
1044{
1045 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001046 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1047 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001048 inode->i_blocks -= count;
1049 sbi->total_valid_block_count -= (block_t)count;
1050 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001051}
1052
1053static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1054{
1055 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001056 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001057}
1058
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001059static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001060{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001061 atomic_inc(&F2FS_I(inode)->dirty_pages);
1062 if (S_ISDIR(inode->i_mode))
1063 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001064}
1065
1066static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1067{
1068 atomic_dec(&sbi->nr_pages[count_type]);
1069}
1070
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001071static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001072{
Chao Yu5ac9f362015-06-29 18:14:10 +08001073 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1074 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001075 return;
1076
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001077 atomic_dec(&F2FS_I(inode)->dirty_pages);
1078
1079 if (S_ISDIR(inode->i_mode))
1080 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001081}
1082
1083static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1084{
1085 return atomic_read(&sbi->nr_pages[count_type]);
1086}
1087
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001088static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001089{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001090 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001091}
1092
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001093static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1094{
1095 unsigned int pages_per_sec = sbi->segs_per_sec *
1096 (1 << sbi->log_blocks_per_seg);
1097 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1098 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1099}
1100
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001101static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1102{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001103 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001104}
1105
1106static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1107{
1108 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1109
1110 /* return NAT or SIT bitmap */
1111 if (flag == NAT_BITMAP)
1112 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1113 else if (flag == SIT_BITMAP)
1114 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1115
1116 return 0;
1117}
1118
Wanpeng Li55141482015-02-26 07:57:20 +08001119static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1120{
1121 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1122}
1123
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001124static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1125{
1126 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001127 int offset;
1128
Wanpeng Li55141482015-02-26 07:57:20 +08001129 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001130 if (flag == NAT_BITMAP)
1131 return &ckpt->sit_nat_version_bitmap;
1132 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001133 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001134 } else {
1135 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001136 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001137 return &ckpt->sit_nat_version_bitmap + offset;
1138 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001139}
1140
1141static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1142{
1143 block_t start_addr;
1144 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001145 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001146
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001147 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001148
1149 /*
1150 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001151 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001152 */
1153 if (!(ckpt_version & 1))
1154 start_addr += sbi->blocks_per_seg;
1155
1156 return start_addr;
1157}
1158
1159static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1160{
1161 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1162}
1163
1164static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001165 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001166{
1167 block_t valid_block_count;
1168 unsigned int valid_node_count;
1169
1170 spin_lock(&sbi->stat_lock);
1171
Gu Zhengef86d702013-11-19 18:03:38 +08001172 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001173 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001174 spin_unlock(&sbi->stat_lock);
1175 return false;
1176 }
1177
Gu Zhengef86d702013-11-19 18:03:38 +08001178 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001179 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001180 spin_unlock(&sbi->stat_lock);
1181 return false;
1182 }
1183
1184 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001185 inode->i_blocks++;
1186
1187 sbi->alloc_valid_block_count++;
1188 sbi->total_valid_node_count++;
1189 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001190 spin_unlock(&sbi->stat_lock);
1191
1192 return true;
1193}
1194
1195static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001196 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001197{
1198 spin_lock(&sbi->stat_lock);
1199
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001200 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1201 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1202 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001203
Gu Zhengef86d702013-11-19 18:03:38 +08001204 inode->i_blocks--;
1205 sbi->total_valid_node_count--;
1206 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001207
1208 spin_unlock(&sbi->stat_lock);
1209}
1210
1211static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1212{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001213 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001214}
1215
1216static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1217{
1218 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001219 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001220 sbi->total_valid_inode_count++;
1221 spin_unlock(&sbi->stat_lock);
1222}
1223
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001224static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001225{
1226 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001227 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001228 sbi->total_valid_inode_count--;
1229 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001230}
1231
1232static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1233{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001234 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001235}
1236
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001237static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1238 pgoff_t index, bool for_write)
1239{
1240 if (!for_write)
1241 return grab_cache_page(mapping, index);
1242 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1243}
1244
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001245static inline void f2fs_copy_page(struct page *src, struct page *dst)
1246{
1247 char *src_kaddr = kmap(src);
1248 char *dst_kaddr = kmap(dst);
1249
1250 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1251 kunmap(dst);
1252 kunmap(src);
1253}
1254
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001255static inline void f2fs_put_page(struct page *page, int unlock)
1256{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001257 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001258 return;
1259
1260 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001261 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001262 unlock_page(page);
1263 }
1264 page_cache_release(page);
1265}
1266
1267static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1268{
1269 if (dn->node_page)
1270 f2fs_put_page(dn->node_page, 1);
1271 if (dn->inode_page && dn->node_page != dn->inode_page)
1272 f2fs_put_page(dn->inode_page, 0);
1273 dn->node_page = NULL;
1274 dn->inode_page = NULL;
1275}
1276
1277static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001278 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001279{
Gu Zhenge8512d22014-03-07 18:43:28 +08001280 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001281}
1282
Gu Zheng7bd59382013-10-22 14:52:26 +08001283static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1284 gfp_t flags)
1285{
1286 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001287
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001288 entry = kmem_cache_alloc(cachep, flags);
1289 if (!entry)
1290 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001291 return entry;
1292}
1293
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001294static inline struct bio *f2fs_bio_alloc(int npages)
1295{
1296 struct bio *bio;
1297
1298 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001299 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001300 if (!bio)
1301 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001302 return bio;
1303}
1304
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001305static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1306 unsigned long index, void *item)
1307{
1308 while (radix_tree_insert(root, index, item))
1309 cond_resched();
1310}
1311
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001312#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1313
1314static inline bool IS_INODE(struct page *page)
1315{
Gu Zheng45590712013-07-15 17:57:38 +08001316 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001317 return RAW_IS_INODE(p);
1318}
1319
1320static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1321{
1322 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1323}
1324
1325static inline block_t datablock_addr(struct page *node_page,
1326 unsigned int offset)
1327{
1328 struct f2fs_node *raw_node;
1329 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001330 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001331 addr_array = blkaddr_in_node(raw_node);
1332 return le32_to_cpu(addr_array[offset]);
1333}
1334
1335static inline int f2fs_test_bit(unsigned int nr, char *addr)
1336{
1337 int mask;
1338
1339 addr += (nr >> 3);
1340 mask = 1 << (7 - (nr & 0x07));
1341 return mask & *addr;
1342}
1343
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001344static inline void f2fs_set_bit(unsigned int nr, char *addr)
1345{
1346 int mask;
1347
1348 addr += (nr >> 3);
1349 mask = 1 << (7 - (nr & 0x07));
1350 *addr |= mask;
1351}
1352
1353static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1354{
1355 int mask;
1356
1357 addr += (nr >> 3);
1358 mask = 1 << (7 - (nr & 0x07));
1359 *addr &= ~mask;
1360}
1361
Gu Zheng52aca072014-10-20 17:45:51 +08001362static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001363{
1364 int mask;
1365 int ret;
1366
1367 addr += (nr >> 3);
1368 mask = 1 << (7 - (nr & 0x07));
1369 ret = mask & *addr;
1370 *addr |= mask;
1371 return ret;
1372}
1373
Gu Zheng52aca072014-10-20 17:45:51 +08001374static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001375{
1376 int mask;
1377 int ret;
1378
1379 addr += (nr >> 3);
1380 mask = 1 << (7 - (nr & 0x07));
1381 ret = mask & *addr;
1382 *addr &= ~mask;
1383 return ret;
1384}
1385
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001386static inline void f2fs_change_bit(unsigned int nr, char *addr)
1387{
1388 int mask;
1389
1390 addr += (nr >> 3);
1391 mask = 1 << (7 - (nr & 0x07));
1392 *addr ^= mask;
1393}
1394
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001395/* used for f2fs_inode_info->flags */
1396enum {
1397 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001398 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001399 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001400 FI_INC_LINK, /* need to increment i_nlink */
1401 FI_ACL_MODE, /* indicate acl mode */
1402 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001403 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001404 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001405 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001406 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001407 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001408 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001409 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001410 FI_APPEND_WRITE, /* inode has appended data */
1411 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001412 FI_NEED_IPU, /* used for ipu per file */
1413 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001414 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001415 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001416 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001417 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001418 FI_INLINE_DOTS, /* indicate inline dot dentries */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001419};
1420
1421static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1422{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001423 if (!test_bit(flag, &fi->flags))
1424 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001425}
1426
1427static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1428{
1429 return test_bit(flag, &fi->flags);
1430}
1431
1432static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1433{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001434 if (test_bit(flag, &fi->flags))
1435 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001436}
1437
1438static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1439{
1440 fi->i_acl_mode = mode;
1441 set_inode_flag(fi, FI_ACL_MODE);
1442}
1443
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001444static inline void get_inline_info(struct f2fs_inode_info *fi,
1445 struct f2fs_inode *ri)
1446{
1447 if (ri->i_inline & F2FS_INLINE_XATTR)
1448 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001449 if (ri->i_inline & F2FS_INLINE_DATA)
1450 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001451 if (ri->i_inline & F2FS_INLINE_DENTRY)
1452 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001453 if (ri->i_inline & F2FS_DATA_EXIST)
1454 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001455 if (ri->i_inline & F2FS_INLINE_DOTS)
1456 set_inode_flag(fi, FI_INLINE_DOTS);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001457}
1458
1459static inline void set_raw_inline(struct f2fs_inode_info *fi,
1460 struct f2fs_inode *ri)
1461{
1462 ri->i_inline = 0;
1463
1464 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1465 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001466 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1467 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001468 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1469 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001470 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1471 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001472 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1473 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001474}
1475
Chao Yu987c7c32014-03-12 15:59:03 +08001476static inline int f2fs_has_inline_xattr(struct inode *inode)
1477{
1478 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1479}
1480
Jaegeuk Kimde936532013-08-12 21:08:03 +09001481static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1482{
Chao Yu987c7c32014-03-12 15:59:03 +08001483 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001484 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1485 return DEF_ADDRS_PER_INODE;
1486}
1487
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001488static inline void *inline_xattr_addr(struct page *page)
1489{
Chao Yu695fd1e2014-02-27 19:52:21 +08001490 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001491 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1492 F2FS_INLINE_XATTR_ADDRS]);
1493}
1494
1495static inline int inline_xattr_size(struct inode *inode)
1496{
Chao Yu987c7c32014-03-12 15:59:03 +08001497 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001498 return F2FS_INLINE_XATTR_ADDRS << 2;
1499 else
1500 return 0;
1501}
1502
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001503static inline int f2fs_has_inline_data(struct inode *inode)
1504{
1505 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1506}
1507
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001508static inline void f2fs_clear_inline_inode(struct inode *inode)
1509{
1510 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1511 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1512}
1513
1514static inline int f2fs_exist_data(struct inode *inode)
1515{
1516 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1517}
1518
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001519static inline int f2fs_has_inline_dots(struct inode *inode)
1520{
1521 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1522}
1523
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001524static inline bool f2fs_is_atomic_file(struct inode *inode)
1525{
1526 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1527}
1528
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001529static inline bool f2fs_is_volatile_file(struct inode *inode)
1530{
1531 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1532}
1533
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001534static inline bool f2fs_is_first_block_written(struct inode *inode)
1535{
1536 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1537}
1538
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001539static inline bool f2fs_is_drop_cache(struct inode *inode)
1540{
1541 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1542}
1543
Huajun Li1001b342013-11-10 23:13:16 +08001544static inline void *inline_data_addr(struct page *page)
1545{
Chao Yu695fd1e2014-02-27 19:52:21 +08001546 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001547 return (void *)&(ri->i_addr[1]);
1548}
1549
Chao Yu34d67de2014-09-24 18:15:19 +08001550static inline int f2fs_has_inline_dentry(struct inode *inode)
1551{
1552 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1553}
1554
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001555static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1556{
1557 if (!f2fs_has_inline_dentry(dir))
1558 kunmap(page);
1559}
1560
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001561static inline int is_file(struct inode *inode, int type)
1562{
1563 return F2FS_I(inode)->i_advise & type;
1564}
1565
1566static inline void set_file(struct inode *inode, int type)
1567{
1568 F2FS_I(inode)->i_advise |= type;
1569}
1570
1571static inline void clear_file(struct inode *inode, int type)
1572{
1573 F2FS_I(inode)->i_advise &= ~type;
1574}
1575
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001576static inline int f2fs_readonly(struct super_block *sb)
1577{
1578 return sb->s_flags & MS_RDONLY;
1579}
1580
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001581static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1582{
1583 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1584}
1585
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001586static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1587{
1588 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1589 sbi->sb->s_flags |= MS_RDONLY;
1590}
1591
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001592static inline bool is_dot_dotdot(const struct qstr *str)
1593{
1594 if (str->len == 1 && str->name[0] == '.')
1595 return true;
1596
1597 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1598 return true;
1599
1600 return false;
1601}
1602
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001603static inline bool f2fs_may_extent_tree(struct inode *inode)
1604{
1605 mode_t mode = inode->i_mode;
1606
1607 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1608 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1609 return false;
1610
1611 return S_ISREG(mode);
1612}
1613
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001614static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1615{
1616 void *ret;
1617
1618 ret = kmalloc(size, flags | __GFP_NOWARN);
1619 if (!ret)
1620 ret = __vmalloc(size, flags, PAGE_KERNEL);
1621 return ret;
1622}
1623
1624static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1625{
1626 void *ret;
1627
1628 ret = kzalloc(size, flags | __GFP_NOWARN);
1629 if (!ret)
1630 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1631 return ret;
1632}
1633
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001634#define get_inode_mode(i) \
1635 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1636 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1637
Chao Yu267378d2014-04-23 14:10:24 +08001638/* get offset of first page in next direct node */
1639#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1640 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1641 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1642 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1643
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001644/*
1645 * file.c
1646 */
1647int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1648void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001649int truncate_blocks(struct inode *, u64, bool);
Chao Yub0154892015-08-24 17:39:42 +08001650int f2fs_truncate(struct inode *, bool);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001651int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001652int f2fs_setattr(struct dentry *, struct iattr *);
1653int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001654int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001655long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001656long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001657
1658/*
1659 * inode.c
1660 */
1661void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001662struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001663int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001664void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001665void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001666int f2fs_write_inode(struct inode *, struct writeback_control *);
1667void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001668void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001669
1670/*
1671 * namei.c
1672 */
1673struct dentry *f2fs_get_parent(struct dentry *child);
1674
1675/*
1676 * dir.c
1677 */
Chao Yudbeacf02014-09-24 18:17:04 +08001678extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001679void set_de_type(struct f2fs_dir_entry *, umode_t);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001680
1681struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1682 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001683bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07001684 unsigned int, struct f2fs_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001685void do_make_empty_dir(struct inode *, struct inode *,
1686 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001687struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001688 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001689void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001690int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001691void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001692struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1693 struct page **);
1694struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1695ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1696void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1697 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001698int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001699void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001700 const struct qstr *, f2fs_hash_t , unsigned int);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001701int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1702 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001703void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1704 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001705int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001706bool f2fs_empty_dir(struct inode *);
1707
Al Virob7f7a5e2013-01-25 16:15:43 -05001708static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1709{
David Howells2b0143b2015-03-17 22:25:59 +00001710 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001711 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001712}
1713
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001714/*
1715 * super.c
1716 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001717int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001718int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001719extern __printf(3, 4)
1720void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001721
1722/*
1723 * hash.c
1724 */
Gu Zhengeee61602014-06-24 18:21:23 +08001725f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001726
1727/*
1728 * node.c
1729 */
1730struct dnode_of_data;
1731struct node_info;
1732
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001733bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001734int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001735bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001736bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001737void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1738int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1739int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001740int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001741int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001742int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001743struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001744struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001745void ra_node_page(struct f2fs_sb_info *, nid_t);
1746struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1747struct page *get_node_page_ra(struct page *, int);
1748void sync_inode_page(struct dnode_of_data *);
1749int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1750bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1751void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1752void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001753int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001754void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001755void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001756int recover_inode_page(struct f2fs_sb_info *, struct page *);
1757int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1758 struct f2fs_summary_block *);
1759void flush_nat_entries(struct f2fs_sb_info *);
1760int build_node_manager(struct f2fs_sb_info *);
1761void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001762int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001763void destroy_node_manager_caches(void);
1764
1765/*
1766 * segment.c
1767 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001768void register_inmem_page(struct inode *, struct page *);
Jaegeuk Kimedb27de2015-07-25 00:52:52 -07001769int commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001770void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001771void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001772int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001773int create_flush_cmd_control(struct f2fs_sb_info *);
1774void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001775void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001776bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001777void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001778void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001779void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001780bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001781int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001782void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001783int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001784struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001785void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001786void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001787void write_node_page(unsigned int, struct f2fs_io_info *);
1788void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1789void rewrite_data_page(struct f2fs_io_info *);
Chao Yu528e3452015-05-28 19:15:35 +08001790void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1791 block_t, block_t, unsigned char, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001792void allocate_data_block(struct f2fs_sb_info *, struct page *,
1793 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001794void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Chao Yu08b39fb2015-10-08 13:27:34 +08001795void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001796void write_data_summaries(struct f2fs_sb_info *, block_t);
1797void write_node_summaries(struct f2fs_sb_info *, block_t);
1798int lookup_journal_in_cursum(struct f2fs_summary_block *,
1799 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001800void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001801int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001802void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001803int __init create_segment_manager_caches(void);
1804void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001805
1806/*
1807 * checkpoint.c
1808 */
1809struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1810struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08001811struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08001812bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08001813int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08001814void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001815long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001816void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1817void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001818void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001819bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001820int acquire_orphan_inode(struct f2fs_sb_info *);
1821void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001822void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1823void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08001824int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001825int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001826void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001827void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001828void remove_dirty_dir_inode(struct inode *);
1829void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001830void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001831void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001832int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001833void destroy_checkpoint_caches(void);
1834
1835/*
1836 * data.c
1837 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001838void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001839int f2fs_submit_page_bio(struct f2fs_io_info *);
1840void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08001841void set_data_blkaddr(struct dnode_of_data *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001842int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08001843int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Huajun Lib6009652013-11-10 23:13:18 +08001844int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001845struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07001846struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001847struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001848struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001849int do_write_data_page(struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001850int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08001851void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1852int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001853
1854/*
1855 * gc.c
1856 */
1857int start_gc_thread(struct f2fs_sb_info *);
1858void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001859block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Chao Yud530d4d2015-10-05 22:22:44 +08001860int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001861void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001862
1863/*
1864 * recovery.c
1865 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001866int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001867bool space_for_roll_forward(struct f2fs_sb_info *);
1868
1869/*
1870 * debug.c
1871 */
1872#ifdef CONFIG_F2FS_STAT_FS
1873struct f2fs_stat_info {
1874 struct list_head stat_list;
1875 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001876 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1877 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08001878 unsigned long long hit_largest, hit_cached, hit_rbtree;
1879 unsigned long long hit_total, total_ext;
Chao Yu029e13c2015-08-19 19:13:25 +08001880 int ext_tree, ext_node;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001881 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001882 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001883 int total_count, utilization;
Chao Yud5e8f6c2015-07-15 17:28:53 +08001884 int bg_gc, inmem_pages, wb_pages;
1885 int inline_xattr, inline_inode, inline_dir;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001886 unsigned int valid_count, valid_node_count, valid_inode_count;
1887 unsigned int bimodal, avg_vblocks;
1888 int util_free, util_valid, util_invalid;
1889 int rsvd_segs, overp_segs;
1890 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001891 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001892 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09001893 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001894 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09001895 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001896 int curseg[NR_CURSEG_TYPE];
1897 int cursec[NR_CURSEG_TYPE];
1898 int curzone[NR_CURSEG_TYPE];
1899
1900 unsigned int segment_count[2];
1901 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001902 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08001903 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001904};
1905
Gu Zheng963d4f72013-07-12 14:47:11 +08001906static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1907{
Chris Fries6c311ec2014-01-17 14:44:39 -06001908 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001909}
1910
Changman Lee942e0be2014-02-13 15:12:29 +09001911#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001912#define stat_inc_call_count(si) ((si)->call_count++)
1913#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1914#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1915#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
Chao Yu5b7ee372015-09-30 17:38:48 +08001916#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1917#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1918#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1919#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08001920#define stat_inc_inline_xattr(inode) \
1921 do { \
1922 if (f2fs_has_inline_xattr(inode)) \
1923 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1924 } while (0)
1925#define stat_dec_inline_xattr(inode) \
1926 do { \
1927 if (f2fs_has_inline_xattr(inode)) \
1928 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1929 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001930#define stat_inc_inline_inode(inode) \
1931 do { \
1932 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001933 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001934 } while (0)
1935#define stat_dec_inline_inode(inode) \
1936 do { \
1937 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001938 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001939 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001940#define stat_inc_inline_dir(inode) \
1941 do { \
1942 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001943 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001944 } while (0)
1945#define stat_dec_inline_dir(inode) \
1946 do { \
1947 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001948 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001949 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001950#define stat_inc_seg_type(sbi, curseg) \
1951 ((sbi)->segment_count[(curseg)->alloc_type]++)
1952#define stat_inc_block_count(sbi, curseg) \
1953 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001954#define stat_inc_inplace_blocks(sbi) \
1955 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09001956#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001957 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001958 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001959 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001960 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001961 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001962 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1963 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001964 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001965 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1966 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001967 } while (0)
1968
1969#define stat_inc_tot_blk_count(si, blks) \
1970 (si->tot_blks += (blks))
1971
Changman Leee1235982014-12-23 08:37:39 +09001972#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001973 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001974 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001975 stat_inc_tot_blk_count(si, blks); \
1976 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001977 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001978 } while (0)
1979
Changman Leee1235982014-12-23 08:37:39 +09001980#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001981 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001982 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001983 stat_inc_tot_blk_count(si, blks); \
1984 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001985 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001986 } while (0)
1987
1988int f2fs_build_stats(struct f2fs_sb_info *);
1989void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001990void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001991void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001992#else
Changman Lee942e0be2014-02-13 15:12:29 +09001993#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001994#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001995#define stat_inc_bggc_count(si)
1996#define stat_inc_dirty_dir(sbi)
1997#define stat_dec_dirty_dir(sbi)
1998#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08001999#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002000#define stat_inc_largest_node_hit(sbi)
2001#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002002#define stat_inc_inline_xattr(inode)
2003#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002004#define stat_inc_inline_inode(inode)
2005#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002006#define stat_inc_inline_dir(inode)
2007#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002008#define stat_inc_seg_type(sbi, curseg)
2009#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002010#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002011#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002012#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002013#define stat_inc_data_blk_count(sbi, blks, gc_type)
2014#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002015
2016static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2017static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09002018static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09002019static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002020#endif
2021
2022extern const struct file_operations f2fs_dir_operations;
2023extern const struct file_operations f2fs_file_operations;
2024extern const struct inode_operations f2fs_file_inode_operations;
2025extern const struct address_space_operations f2fs_dblock_aops;
2026extern const struct address_space_operations f2fs_node_aops;
2027extern const struct address_space_operations f2fs_meta_aops;
2028extern const struct inode_operations f2fs_dir_inode_operations;
2029extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002030extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002031extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002032extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002033
Huajun Lie18c65b2013-11-10 23:13:19 +08002034/*
2035 * inline.c
2036 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002037bool f2fs_may_inline_data(struct inode *);
2038bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002039void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002040bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002041int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002042int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2043int f2fs_convert_inline_inode(struct inode *);
2044int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002045bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002046struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2047 struct f2fs_filename *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002048struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2049int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002050int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2051 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002052void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2053 struct inode *, struct inode *);
2054bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002055int f2fs_read_inline_dir(struct file *, struct dir_context *,
2056 struct f2fs_str *);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002057
2058/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002059 * shrinker.c
2060 */
2061unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2062unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2063void f2fs_join_shrinker(struct f2fs_sb_info *);
2064void f2fs_leave_shrinker(struct f2fs_sb_info *);
2065
2066/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002067 * extent_cache.c
2068 */
2069unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2070void f2fs_drop_largest_extent(struct inode *, pgoff_t);
2071void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2072unsigned int f2fs_destroy_extent_node(struct inode *);
2073void f2fs_destroy_extent_tree(struct inode *);
2074bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2075void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002076void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2077 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002078void init_extent_cache_info(struct f2fs_sb_info *);
2079int __init create_extent_cache(void);
2080void destroy_extent_cache(void);
2081
2082/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002083 * crypto support
2084 */
2085static inline int f2fs_encrypted_inode(struct inode *inode)
2086{
2087#ifdef CONFIG_F2FS_FS_ENCRYPTION
2088 return file_is_encrypt(inode);
2089#else
2090 return 0;
2091#endif
2092}
2093
2094static inline void f2fs_set_encrypted_inode(struct inode *inode)
2095{
2096#ifdef CONFIG_F2FS_FS_ENCRYPTION
2097 file_set_encrypt(inode);
2098#endif
2099}
2100
2101static inline bool f2fs_bio_encrypted(struct bio *bio)
2102{
2103#ifdef CONFIG_F2FS_FS_ENCRYPTION
2104 return unlikely(bio->bi_private != NULL);
2105#else
2106 return false;
2107#endif
2108}
2109
2110static inline int f2fs_sb_has_crypto(struct super_block *sb)
2111{
2112#ifdef CONFIG_F2FS_FS_ENCRYPTION
2113 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2114#else
2115 return 0;
2116#endif
2117}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002118
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002119static inline bool f2fs_may_encrypt(struct inode *inode)
2120{
2121#ifdef CONFIG_F2FS_FS_ENCRYPTION
2122 mode_t mode = inode->i_mode;
2123
2124 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2125#else
2126 return 0;
2127#endif
2128}
2129
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002130/* crypto_policy.c */
2131int f2fs_is_child_context_consistent_with_parent(struct inode *,
2132 struct inode *);
2133int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2134int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2135int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002136
2137/* crypt.c */
Jaegeuk Kim8bacf6de2015-05-12 13:26:54 -07002138extern struct kmem_cache *f2fs_crypt_info_cachep;
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002139bool f2fs_valid_contents_enc_mode(uint32_t);
2140uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2141struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2142void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2143struct page *f2fs_encrypt(struct inode *, struct page *);
2144int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2145int f2fs_decrypt_one(struct inode *, struct page *);
2146void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2147
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002148/* crypto_key.c */
Jaegeuk Kim26bf3dc2015-05-19 22:26:54 -07002149void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002150int _f2fs_get_encryption_info(struct inode *inode);
2151
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002152/* crypto_fname.c */
2153bool f2fs_valid_filenames_enc_mode(uint32_t);
2154u32 f2fs_fname_crypto_round_up(u32, u32);
2155int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2156int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2157 const struct f2fs_str *, struct f2fs_str *);
2158int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2159 struct f2fs_str *);
2160
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002161#ifdef CONFIG_F2FS_FS_ENCRYPTION
2162void f2fs_restore_and_release_control_page(struct page **);
2163void f2fs_restore_control_page(struct page *);
2164
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002165int __init f2fs_init_crypto(void);
2166int f2fs_crypto_initialize(void);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002167void f2fs_exit_crypto(void);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002168
2169int f2fs_has_encryption_key(struct inode *);
2170
2171static inline int f2fs_get_encryption_info(struct inode *inode)
2172{
2173 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2174
2175 if (!ci ||
2176 (ci->ci_keyring_key &&
2177 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2178 (1 << KEY_FLAG_REVOKED) |
2179 (1 << KEY_FLAG_DEAD)))))
2180 return _f2fs_get_encryption_info(inode);
2181 return 0;
2182}
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002183
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002184void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2185int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2186 int lookup, struct f2fs_filename *);
2187void f2fs_fname_free_filename(struct f2fs_filename *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002188#else
2189static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2190static inline void f2fs_restore_control_page(struct page *p) { }
2191
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002192static inline int __init f2fs_init_crypto(void) { return 0; }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002193static inline void f2fs_exit_crypto(void) { }
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002194
2195static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2196static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002197static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2198
2199static inline int f2fs_fname_setup_filename(struct inode *dir,
2200 const struct qstr *iname,
2201 int lookup, struct f2fs_filename *fname)
2202{
2203 memset(fname, 0, sizeof(struct f2fs_filename));
2204 fname->usr_fname = iname;
2205 fname->disk_name.name = (unsigned char *)iname->name;
2206 fname->disk_name.len = iname->len;
2207 return 0;
2208}
2209
2210static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002211#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002212#endif