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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 Kimd0239e12016-01-08 16:57:48 -080024#include <linux/blkdev.h>
Jaegeuk Kim0b81d072015-05-15 16:26:10 -070025#include <linux/fscrypto.h>
Keith Mok43b65732016-03-02 12:04:24 -080026#include <crypto/hash.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090027
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090028#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070029#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090030#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070031#define f2fs_bug_on(sbi, condition) \
32 do { \
33 if (unlikely(condition)) { \
34 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080035 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070036 } \
37 } while (0)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090038#endif
39
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070040#ifdef CONFIG_F2FS_FAULT_INJECTION
41enum {
42 FAULT_KMALLOC,
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -070043 FAULT_PAGE_ALLOC,
Jaegeuk Kimcb789422016-04-29 16:29:22 -070044 FAULT_ALLOC_NID,
45 FAULT_ORPHAN,
46 FAULT_BLOCK,
47 FAULT_DIR_DEPTH,
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070048 FAULT_MAX,
49};
50
51extern u32 f2fs_fault_rate;
52extern atomic_t f2fs_ops;
53extern char *fault_name[FAULT_MAX];
54
55static inline bool time_to_inject(int type)
56{
57 atomic_inc(&f2fs_ops);
58 if (f2fs_fault_rate && (atomic_read(&f2fs_ops) >= f2fs_fault_rate)) {
59 atomic_set(&f2fs_ops, 0);
60 printk("%sF2FS-fs : inject %s in %pF\n",
61 KERN_INFO,
62 fault_name[type],
63 __builtin_return_address(0));
64 return true;
65 }
66 return false;
67}
68#endif
69
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090070/*
71 * For mount options
72 */
73#define F2FS_MOUNT_BG_GC 0x00000001
74#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
75#define F2FS_MOUNT_DISCARD 0x00000004
76#define F2FS_MOUNT_NOHEAP 0x00000008
77#define F2FS_MOUNT_XATTR_USER 0x00000010
78#define F2FS_MOUNT_POSIX_ACL 0x00000020
79#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +090080#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +080081#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +080082#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
83#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
84#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -070085#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +080086#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim6aefd932015-10-05 11:02:54 -070087#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
Chao Yu343f40f2015-12-16 13:12:16 +080088#define F2FS_MOUNT_DATA_FLUSH 0x00008000
Jaegeuk Kim73faec42016-04-29 15:34:32 -070089#define F2FS_MOUNT_FAULT_INJECTION 0x00010000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090090
91#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
92#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
93#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
94
95#define ver_after(a, b) (typecheck(unsigned long long, a) && \
96 typecheck(unsigned long long, b) && \
97 ((long long)((a) - (b)) > 0))
98
Jaegeuk Kima9841c42013-05-24 12:41:04 +090099typedef u32 block_t; /*
100 * should not change u32, since it is the on-disk block
101 * address format, __le32.
102 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900103typedef u32 nid_t;
104
105struct f2fs_mount_info {
106 unsigned int opt;
107};
108
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700109#define F2FS_FEATURE_ENCRYPT 0x0001
110
Jaegeuk Kim76f105a2015-04-13 15:10:36 -0700111#define F2FS_HAS_FEATURE(sb, mask) \
112 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
113#define F2FS_SET_FEATURE(sb, mask) \
114 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
115#define F2FS_CLEAR_FEATURE(sb, mask) \
116 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
117
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900118/*
119 * For checkpoint manager
120 */
121enum {
122 NAT_BITMAP,
123 SIT_BITMAP
124};
125
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700126enum {
127 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800128 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700129 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700130 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700131 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700132};
133
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800134#define DEF_BATCHED_TRIM_SECTIONS 32
135#define BATCHED_TRIM_SEGMENTS(sbi) \
136 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700137#define BATCHED_TRIM_BLOCKS(sbi) \
138 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700139#define DEF_CP_INTERVAL 60 /* 60 secs */
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800140#define DEF_IDLE_INTERVAL 120 /* 2 mins */
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800141
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700142struct cp_control {
143 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700144 __u64 trim_start;
145 __u64 trim_end;
146 __u64 trim_minlen;
147 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700148};
149
Chao Yu662befd2014-02-07 16:11:53 +0800150/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800151 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800152 */
153enum {
154 META_CP,
155 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800156 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700157 META_SSA,
158 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800159};
160
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700161/* for the list of ino */
162enum {
163 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700164 APPEND_INO, /* for append ino list */
165 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700166 MAX_INO_ENTRY, /* max. list */
167};
168
169struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900170 struct list_head list; /* list head */
171 nid_t ino; /* inode number */
172};
173
Chao Yu2710fd72015-12-15 13:30:45 +0800174/* for the list of inodes to be GCed */
Chao Yu06292072014-12-29 15:56:18 +0800175struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900176 struct list_head list; /* list head */
177 struct inode *inode; /* vfs inode pointer */
178};
179
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900180/* for the list of blockaddresses to be discarded */
181struct discard_entry {
182 struct list_head list; /* list head */
183 block_t blkaddr; /* block address to be discarded */
184 int len; /* # of consecutive blocks of the discard */
185};
186
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900187/* for the list of fsync inodes, used only during recovery */
188struct fsync_inode_entry {
189 struct list_head list; /* list head */
190 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700191 block_t blkaddr; /* block address locating the last fsync */
192 block_t last_dentry; /* block address locating the last dentry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900193};
194
Chao Yudfc08a12016-02-14 18:50:40 +0800195#define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
196#define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900197
Chao Yudfc08a12016-02-14 18:50:40 +0800198#define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
199#define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
200#define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
201#define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900202
Chao Yudfc08a12016-02-14 18:50:40 +0800203#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
204#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700205
Chao Yudfc08a12016-02-14 18:50:40 +0800206static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900207{
Chao Yudfc08a12016-02-14 18:50:40 +0800208 int before = nats_in_cursum(journal);
209 journal->n_nats = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900210 return before;
211}
212
Chao Yudfc08a12016-02-14 18:50:40 +0800213static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900214{
Chao Yudfc08a12016-02-14 18:50:40 +0800215 int before = sits_in_cursum(journal);
216 journal->n_sits = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900217 return before;
218}
219
Chao Yudfc08a12016-02-14 18:50:40 +0800220static inline bool __has_cursum_space(struct f2fs_journal *journal,
221 int size, int type)
Chao Yu184a5cd2014-09-04 18:13:01 +0800222{
223 if (type == NAT_JOURNAL)
Chao Yudfc08a12016-02-14 18:50:40 +0800224 return size <= MAX_NAT_JENTRIES(journal);
225 return size <= MAX_SIT_JENTRIES(journal);
Chao Yu184a5cd2014-09-04 18:13:01 +0800226}
227
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900228/*
Namjae Jeone9750822013-02-04 23:41:41 +0900229 * ioctl commands
230 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700231#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
232#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800233#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700234
235#define F2FS_IOCTL_MAGIC 0xf5
236#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
237#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700238#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800239#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
240#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800241#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Chao Yu456b88e2015-10-05 22:24:19 +0800242#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
Chao Yud323d002015-10-27 09:53:45 +0800243#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
Namjae Jeone9750822013-02-04 23:41:41 +0900244
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700245#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
246#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
247#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700248
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800249/*
250 * should be same as XFS_IOC_GOINGDOWN.
251 * Flags for going down operation used by FS_IOC_GOINGDOWN
252 */
253#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
254#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
255#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
256#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
Jaegeuk Kimc912a822015-10-07 09:46:37 -0700257#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800258
Namjae Jeone9750822013-02-04 23:41:41 +0900259#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
260/*
261 * ioctl commands in 32 bit emulation
262 */
Chao Yu04ef4b62015-11-10 18:44:20 +0800263#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
264#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
265#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
Namjae Jeone9750822013-02-04 23:41:41 +0900266#endif
267
Chao Yud323d002015-10-27 09:53:45 +0800268struct f2fs_defragment {
269 u64 start;
270 u64 len;
271};
272
Namjae Jeone9750822013-02-04 23:41:41 +0900273/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900274 * For INODE and NODE manager
275 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700276/* for directory operations */
277struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700278 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700279 const void *bitmap;
280 struct f2fs_dir_entry *dentry;
281 __u8 (*filename)[F2FS_SLOT_LEN];
282 int max;
283};
284
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700285static inline void make_dentry_ptr(struct inode *inode,
286 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700287{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700288 d->inode = inode;
289
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700290 if (type == 1) {
291 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
292 d->max = NR_DENTRY_IN_BLOCK;
293 d->bitmap = &t->dentry_bitmap;
294 d->dentry = t->dentry;
295 d->filename = t->filename;
296 } else {
297 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
298 d->max = NR_INLINE_DENTRY;
299 d->bitmap = &t->dentry_bitmap;
300 d->dentry = t->dentry;
301 d->filename = t->filename;
302 }
303}
304
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900305/*
306 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
307 * as its node offset to distinguish from index node blocks.
308 * But some bits are used to mark the node block.
309 */
310#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
311 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900312enum {
313 ALLOC_NODE, /* allocate a new node page if needed */
314 LOOKUP_NODE, /* look up a node without readahead */
315 LOOKUP_NODE_RA, /*
316 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800317 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900318 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900319};
320
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700321#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900322
Chao Yu817202d92014-04-28 17:59:43 +0800323#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
324
Chao Yu13054c52015-02-05 17:52:58 +0800325/* vector size for gang look-up from extent cache that consists of radix tree */
326#define EXT_TREE_VEC_SIZE 64
327
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900328/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800329#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
330
331/* number of extent info in extent cache we try to shrink */
332#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900333
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900334struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800335 unsigned int fofs; /* start offset in a file */
336 u32 blk; /* start block address of the extent */
337 unsigned int len; /* length of the extent */
338};
339
340struct extent_node {
341 struct rb_node rb_node; /* rb node located in rb-tree */
342 struct list_head list; /* node in global extent list of sbi */
343 struct extent_info ei; /* extent info */
Hou Pengyang201ef5e2016-01-26 12:56:26 +0000344 struct extent_tree *et; /* extent tree pointer */
Chao Yu13054c52015-02-05 17:52:58 +0800345};
346
347struct extent_tree {
348 nid_t ino; /* inode number */
349 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800350 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700351 struct extent_info largest; /* largested extent info */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800352 struct list_head list; /* to be used by sbi->zombie_list */
Chao Yu13054c52015-02-05 17:52:58 +0800353 rwlock_t lock; /* protect extent info rb-tree */
Chao Yu68e35382016-01-08 20:22:52 +0800354 atomic_t node_cnt; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900355};
356
357/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700358 * This structure is taken from ext4_map_blocks.
359 *
360 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
361 */
362#define F2FS_MAP_NEW (1 << BH_New)
363#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700364#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
365#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
366 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700367
368struct f2fs_map_blocks {
369 block_t m_pblk;
370 block_t m_lblk;
371 unsigned int m_len;
372 unsigned int m_flags;
Chao Yuda859852016-01-26 15:42:58 +0800373 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700374};
375
Chao Yue2b4e2b2015-08-19 19:11:19 +0800376/* for flag in get_data_block */
377#define F2FS_GET_BLOCK_READ 0
378#define F2FS_GET_BLOCK_DIO 1
379#define F2FS_GET_BLOCK_FIEMAP 2
380#define F2FS_GET_BLOCK_BMAP 3
Jaegeuk Kimb439b102016-02-03 13:09:09 -0800381#define F2FS_GET_BLOCK_PRE_DIO 4
Jaegeuk Kim24b84912016-02-03 13:49:44 -0800382#define F2FS_GET_BLOCK_PRE_AIO 5
Chao Yue2b4e2b2015-08-19 19:11:19 +0800383
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700384/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900385 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
386 */
387#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900388#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700389#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700390#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900391
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700392#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
393#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
394#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
395#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
396#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
397#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700398#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
399#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
400#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700401#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
402#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700403
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900404#define DEF_DIR_LEVEL 0
405
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900406struct f2fs_inode_info {
407 struct inode vfs_inode; /* serve a vfs inode */
408 unsigned long i_flags; /* keep an inode flags for ioctl */
409 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900410 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900411 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900412 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900413 umode_t i_acl_mode; /* keep file acl mode temporarily */
414
415 /* Use below internally in f2fs*/
416 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900417 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700418 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900419 f2fs_hash_t chash; /* hash value of given file name */
420 unsigned int clevel; /* maximum level of given file name */
421 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900422 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700423
Chao Yu2710fd72015-12-15 13:30:45 +0800424 struct list_head dirty_list; /* linked in global dirty list */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700425 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
426 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700427 struct extent_tree *extent_tree; /* cached extent_tree entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900428};
429
430static inline void get_extent_info(struct extent_info *ext,
Chao Yubd933d42016-05-04 23:19:47 +0800431 struct f2fs_extent *i_ext)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900432{
Chao Yubd933d42016-05-04 23:19:47 +0800433 ext->fofs = le32_to_cpu(i_ext->fofs);
434 ext->blk = le32_to_cpu(i_ext->blk);
435 ext->len = le32_to_cpu(i_ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900436}
437
438static inline void set_raw_extent(struct extent_info *ext,
439 struct f2fs_extent *i_ext)
440{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900441 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800442 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900443 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900444}
445
Chao Yu429511c2015-02-05 17:54:31 +0800446static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
447 u32 blk, unsigned int len)
448{
449 ei->fofs = fofs;
450 ei->blk = blk;
451 ei->len = len;
452}
453
Chao Yu0bdee482015-03-19 19:27:51 +0800454static inline bool __is_extent_same(struct extent_info *ei1,
455 struct extent_info *ei2)
456{
457 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
458 ei1->len == ei2->len);
459}
460
Chao Yu429511c2015-02-05 17:54:31 +0800461static inline bool __is_extent_mergeable(struct extent_info *back,
462 struct extent_info *front)
463{
464 return (back->fofs + back->len == front->fofs &&
465 back->blk + back->len == front->blk);
466}
467
468static inline bool __is_back_mergeable(struct extent_info *cur,
469 struct extent_info *back)
470{
471 return __is_extent_mergeable(back, cur);
472}
473
474static inline bool __is_front_mergeable(struct extent_info *cur,
475 struct extent_info *front)
476{
477 return __is_extent_mergeable(cur, front);
478}
479
Chao Yu4abd3f52015-09-22 21:07:47 +0800480static inline void __try_update_largest_extent(struct extent_tree *et,
481 struct extent_node *en)
482{
483 if (en->ei.len > et->largest.len)
484 et->largest = en->ei;
485}
486
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900487struct f2fs_nm_info {
488 block_t nat_blkaddr; /* base disk address of NAT */
489 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900490 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900491 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900492 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800493 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Chao Yu2304cb02016-01-18 18:32:58 +0800494 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900495
496 /* NAT cache management */
497 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700498 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800499 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900500 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700501 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800502 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900503
504 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900505 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900506 struct list_head free_nid_list; /* a list for free nids */
507 spinlock_t free_nid_list_lock; /* protect free nid list */
508 unsigned int fcnt; /* the number of free node id */
509 struct mutex build_lock; /* lock for build free nids */
510
511 /* for checkpoint */
512 char *nat_bitmap; /* NAT bitmap pointer */
513 int bitmap_size; /* bitmap size */
514};
515
516/*
517 * this structure is used as one of function parameters.
518 * all the information are dedicated to a given direct node block determined
519 * by the data offset in a file.
520 */
521struct dnode_of_data {
522 struct inode *inode; /* vfs inode pointer */
523 struct page *inode_page; /* its inode page, NULL is possible */
524 struct page *node_page; /* cached direct node page */
525 nid_t nid; /* node id of the direct node block */
526 unsigned int ofs_in_node; /* data offset in the node page */
527 bool inode_page_locked; /* inode page is locked or not */
Jaegeuk Kim93bae092015-12-22 12:59:54 -0800528 bool node_changed; /* is node block changed */
Chao Yu3cf45742016-01-26 15:40:44 +0800529 char cur_level; /* level of hole node page */
530 char max_level; /* level of current page located */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900531 block_t data_blkaddr; /* block address of the node block */
532};
533
534static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
535 struct page *ipage, struct page *npage, nid_t nid)
536{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900537 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900538 dn->inode = inode;
539 dn->inode_page = ipage;
540 dn->node_page = npage;
541 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900542}
543
544/*
545 * For SIT manager
546 *
547 * By default, there are 6 active log areas across the whole main area.
548 * When considering hot and cold data separation to reduce cleaning overhead,
549 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
550 * respectively.
551 * In the current design, you should not change the numbers intentionally.
552 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
553 * logs individually according to the underlying devices. (default: 6)
554 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
555 * data and 8 for node logs.
556 */
557#define NR_CURSEG_DATA_TYPE (3)
558#define NR_CURSEG_NODE_TYPE (3)
559#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
560
561enum {
562 CURSEG_HOT_DATA = 0, /* directory entry blocks */
563 CURSEG_WARM_DATA, /* data blocks */
564 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
565 CURSEG_HOT_NODE, /* direct node blocks of directory files */
566 CURSEG_WARM_NODE, /* direct node blocks of normal files */
567 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800568 NO_CHECK_TYPE,
569 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900570};
571
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900572struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900573 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800574 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900575 int ret;
576};
577
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800578struct flush_cmd_control {
579 struct task_struct *f2fs_issue_flush; /* flush thread */
580 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800581 struct llist_head issue_list; /* list for command issue */
582 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800583};
584
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900585struct f2fs_sm_info {
586 struct sit_info *sit_info; /* whole segment information */
587 struct free_segmap_info *free_info; /* free segment information */
588 struct dirty_seglist_info *dirty_info; /* dirty segment information */
589 struct curseg_info *curseg_array; /* active segment information */
590
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900591 block_t seg0_blkaddr; /* block address of 0'th segment */
592 block_t main_blkaddr; /* start block address of main area */
593 block_t ssa_blkaddr; /* start block address of SSA area */
594
595 unsigned int segment_count; /* total # of segments */
596 unsigned int main_segments; /* # of segments in main area */
597 unsigned int reserved_segments; /* # of reserved segments */
598 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900599
600 /* a threshold to reclaim prefree segments */
601 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900602
603 /* for small discard management */
604 struct list_head discard_list; /* 4KB discard list */
605 int nr_discards; /* # of discards in the list */
606 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900607
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800608 /* for batched trimming */
609 unsigned int trim_sections; /* # of sections to trim */
610
Chao Yu184a5cd2014-09-04 18:13:01 +0800611 struct list_head sit_entry_set; /* sit entry set list */
612
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900613 unsigned int ipu_policy; /* in-place-update policy */
614 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700615 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900616
617 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800618 struct flush_cmd_control *cmd_control_info;
619
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900620};
621
622/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900623 * For superblock
624 */
625/*
626 * COUNT_TYPE for monitoring
627 *
628 * f2fs monitors the number of several block types such as on-writeback,
629 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
630 */
631enum count_type {
632 F2FS_WRITEBACK,
633 F2FS_DIRTY_DENTS,
Chao Yuc227f912015-12-16 13:09:20 +0800634 F2FS_DIRTY_DATA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900635 F2FS_DIRTY_NODES,
636 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800637 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900638 NR_COUNT_TYPE,
639};
640
641/*
arter97e1c42042014-08-06 23:22:50 +0900642 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900643 * The available types are:
644 * DATA User data pages. It operates as async mode.
645 * NODE Node pages. It operates as async mode.
646 * META FS metadata pages such as SIT, NAT, CP.
647 * NR_PAGE_TYPE The number of page types.
648 * META_FLUSH Make sure the previous pages are written
649 * with waiting the bio's completion
650 * ... Only can be used with META.
651 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900652#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900653enum page_type {
654 DATA,
655 NODE,
656 META,
657 NR_PAGE_TYPE,
658 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700659 INMEM, /* the below types are used by tracepoints only. */
660 INMEM_DROP,
Chao Yu28bc1062016-02-06 14:40:34 +0800661 INMEM_REVOKE,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700662 IPU,
663 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900664};
665
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900666struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700667 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800668 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
669 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Chao Yu7a9d7542016-02-22 18:36:38 +0800670 block_t new_blkaddr; /* new block address to be written */
Chao Yu28bc1062016-02-06 14:40:34 +0800671 block_t old_blkaddr; /* old block address before Cow */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700672 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700673 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900674};
675
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900676#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900677struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900678 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900679 struct bio *bio; /* bios to merge */
680 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900681 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800682 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900683};
684
Chao Yuc227f912015-12-16 13:09:20 +0800685enum inode_type {
686 DIR_INODE, /* for dirty dir inode */
687 FILE_INODE, /* for dirty regular/symlink inode */
688 NR_INODE_TYPE,
689};
690
Chao Yu67298802014-11-18 11:18:36 +0800691/* for inner inode cache management */
692struct inode_management {
693 struct radix_tree_root ino_root; /* ino entry array */
694 spinlock_t ino_lock; /* for ino entry lock */
695 struct list_head ino_list; /* inode list head */
696 unsigned long ino_num; /* number of entries */
697};
698
Chao Yucaf00472015-01-28 17:48:42 +0800699/* For s_flag in struct f2fs_sb_info */
700enum {
701 SBI_IS_DIRTY, /* dirty flag for checkpoint */
702 SBI_IS_CLOSE, /* specify unmounting */
703 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
704 SBI_POR_DOING, /* recovery is doing or not */
Jaegeuk Kimdf728b02016-03-23 17:05:27 -0700705 SBI_NEED_SB_WRITE, /* need to recover superblock */
Chao Yucaf00472015-01-28 17:48:42 +0800706};
707
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800708enum {
709 CP_TIME,
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800710 REQ_TIME,
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800711 MAX_TIME,
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 f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yue8240f62015-12-15 17:19:26 +0800718 int valid_super_block; /* valid super block no */
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 Kim6beceb52016-01-08 15:51:50 -0800740 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
741 long interval_time[MAX_TIME]; /* to store thresholds */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900742
Chao Yu67298802014-11-18 11:18:36 +0800743 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700744
745 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800746 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900747
Chao Yuc227f912015-12-16 13:09:20 +0800748 /* for inode management */
749 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
750 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900751
Chao Yu13054c52015-02-05 17:52:58 +0800752 /* for extent tree cache */
753 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
754 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
755 struct list_head extent_list; /* lru list for shrinker */
756 spinlock_t extent_lock; /* locking extent lru list */
Jaegeuk Kim7441cce2015-12-21 19:20:15 -0800757 atomic_t total_ext_tree; /* extent tree count */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800758 struct list_head zombie_list; /* extent zombie tree list */
Jaegeuk Kim74fd8d92015-12-21 19:25:50 -0800759 atomic_t total_zombie_tree; /* extent zombie tree count */
Chao Yu13054c52015-02-05 17:52:58 +0800760 atomic_t total_ext_node; /* extent info count */
761
arter97e1c42042014-08-06 23:22:50 +0900762 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900763 unsigned int log_sectors_per_block; /* log2 sectors per block */
764 unsigned int log_blocksize; /* log2 block size */
765 unsigned int blocksize; /* block size */
766 unsigned int root_ino_num; /* root inode number*/
767 unsigned int node_ino_num; /* node inode number*/
768 unsigned int meta_ino_num; /* meta inode number*/
769 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
770 unsigned int blocks_per_seg; /* blocks per segment */
771 unsigned int segs_per_sec; /* segments per section */
772 unsigned int secs_per_zone; /* sections per zone */
773 unsigned int total_sections; /* total section count */
774 unsigned int total_node_count; /* total node block count */
775 unsigned int total_valid_node_count; /* valid node block count */
776 unsigned int total_valid_inode_count; /* valid inode count */
Chao Yue0afc4d2015-12-31 14:35:37 +0800777 loff_t max_file_blocks; /* max block index of file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900778 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900779 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900780
781 block_t user_block_count; /* # of user blocks */
782 block_t total_valid_block_count; /* # of valid blocks */
783 block_t alloc_valid_block_count; /* # of allocated blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700784 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900785 block_t last_valid_block_count; /* for recovery */
786 u32 s_next_generation; /* for NFS support */
787 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
788
789 struct f2fs_mount_info mount_opt; /* mount options */
790
791 /* for cleaning operations */
792 struct mutex gc_mutex; /* mutex for GC */
793 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900794 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900795
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900796 /* maximum # of trials to find a victim segment for SSR and GC */
797 unsigned int max_victim_search;
798
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900799 /*
800 * for stat information.
801 * one is for the LFS mode, and the other is for the SSR mode.
802 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900803#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900804 struct f2fs_stat_info *stat_info; /* FS status information */
805 unsigned int segment_count[2]; /* # of allocated segments */
806 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900807 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800808 atomic64_t total_hit_ext; /* # of lookup extent cache */
809 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
810 atomic64_t read_hit_largest; /* # of hit largest extent node */
811 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800812 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800813 atomic_t inline_inode; /* # of inline_data inodes */
814 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900815 int bg_gc; /* background gc calls */
Chao Yu33fbd512015-12-17 17:14:44 +0800816 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900817#endif
818 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900819 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900820
821 /* For sysfs suppport */
822 struct kobject s_kobj;
823 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700824
825 /* For shrinker support */
826 struct list_head s_list;
827 struct mutex umount_mutex;
828 unsigned int shrinker_run_no;
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800829
830 /* For write statistics */
831 u64 sectors_written_start;
832 u64 kbytes_written;
Keith Mok43b65732016-03-02 12:04:24 -0800833
834 /* Reference to checksum algorithm driver via cryptoapi */
835 struct crypto_shash *s_chksum_driver;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900836};
837
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800838/* For write statistics. Suppose sector size is 512 bytes,
839 * and the return value is in kbytes. s is of struct f2fs_sb_info.
840 */
841#define BD_PART_WRITTEN(s) \
842(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
843 s->sectors_written_start) >> 1)
844
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800845static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
846{
847 sbi->last_time[type] = jiffies;
848}
849
850static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
851{
852 struct timespec ts = {sbi->interval_time[type], 0};
853 unsigned long interval = timespec_to_jiffies(&ts);
854
855 return time_after(jiffies, sbi->last_time[type] + interval);
856}
857
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800858static inline bool is_idle(struct f2fs_sb_info *sbi)
859{
860 struct block_device *bdev = sbi->sb->s_bdev;
861 struct request_queue *q = bdev_get_queue(bdev);
862 struct request_list *rl = &q->root_rl;
863
864 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
865 return 0;
866
867 return f2fs_time_over(sbi, REQ_TIME);
868}
869
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900870/*
871 * Inline functions
872 */
Keith Mok43b65732016-03-02 12:04:24 -0800873static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
874 unsigned int length)
875{
876 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
877 u32 *ctx = (u32 *)shash_desc_ctx(shash);
878 int err;
879
880 shash->tfm = sbi->s_chksum_driver;
881 shash->flags = 0;
882 *ctx = F2FS_SUPER_MAGIC;
883
884 err = crypto_shash_update(shash, address, length);
885 BUG_ON(err);
886
887 return *ctx;
888}
889
890static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
891 void *buf, size_t buf_size)
892{
893 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
894}
895
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900896static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
897{
898 return container_of(inode, struct f2fs_inode_info, vfs_inode);
899}
900
901static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
902{
903 return sb->s_fs_info;
904}
905
Jaegeuk Kim40813632014-09-02 15:31:18 -0700906static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
907{
908 return F2FS_SB(inode->i_sb);
909}
910
911static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
912{
913 return F2FS_I_SB(mapping->host);
914}
915
916static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
917{
918 return F2FS_M_SB(page->mapping);
919}
920
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900921static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
922{
923 return (struct f2fs_super_block *)(sbi->raw_super);
924}
925
926static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
927{
928 return (struct f2fs_checkpoint *)(sbi->ckpt);
929}
930
Gu Zheng45590712013-07-15 17:57:38 +0800931static inline struct f2fs_node *F2FS_NODE(struct page *page)
932{
933 return (struct f2fs_node *)page_address(page);
934}
935
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900936static inline struct f2fs_inode *F2FS_INODE(struct page *page)
937{
938 return &((struct f2fs_node *)page_address(page))->i;
939}
940
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900941static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
942{
943 return (struct f2fs_nm_info *)(sbi->nm_info);
944}
945
946static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
947{
948 return (struct f2fs_sm_info *)(sbi->sm_info);
949}
950
951static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
952{
953 return (struct sit_info *)(SM_I(sbi)->sit_info);
954}
955
956static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
957{
958 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
959}
960
961static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
962{
963 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
964}
965
Gu Zheng9df27d92014-01-20 18:37:04 +0800966static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
967{
968 return sbi->meta_inode->i_mapping;
969}
970
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900971static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
972{
973 return sbi->node_inode->i_mapping;
974}
975
Chao Yucaf00472015-01-28 17:48:42 +0800976static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900977{
Chao Yucaf00472015-01-28 17:48:42 +0800978 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900979}
980
Chao Yucaf00472015-01-28 17:48:42 +0800981static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900982{
Chao Yucaf00472015-01-28 17:48:42 +0800983 sbi->s_flag |= (0x01 << type);
984}
985
986static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
987{
988 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900989}
990
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900991static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
992{
993 return le64_to_cpu(cp->checkpoint_ver);
994}
995
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900996static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
997{
998 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
999 return ckpt_flags & f;
1000}
1001
1002static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1003{
1004 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1005 ckpt_flags |= f;
1006 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1007}
1008
1009static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1010{
1011 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1012 ckpt_flags &= (~f);
1013 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1014}
1015
Gu Zhenge4795562013-09-27 18:08:30 +08001016static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001017{
Gu Zhenge4795562013-09-27 18:08:30 +08001018 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001019}
1020
Gu Zhenge4795562013-09-27 18:08:30 +08001021static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001022{
Gu Zhenge4795562013-09-27 18:08:30 +08001023 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001024}
1025
Gu Zhenge4795562013-09-27 18:08:30 +08001026static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001027{
Yang Shi59692b72016-02-26 16:25:25 -08001028 down_write(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001029}
1030
Gu Zhenge4795562013-09-27 18:08:30 +08001031static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001032{
Gu Zhenge4795562013-09-27 18:08:30 +08001033 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001034}
1035
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001036static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1037{
1038 int reason = CP_SYNC;
1039
1040 if (test_opt(sbi, FASTBOOT))
1041 reason = CP_FASTBOOT;
1042 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1043 reason = CP_UMOUNT;
1044 return reason;
1045}
1046
1047static inline bool __remain_node_summaries(int reason)
1048{
1049 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1050}
1051
1052static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1053{
1054 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1055 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1056}
1057
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001058/*
1059 * Check whether the given nid is within node id range.
1060 */
Namjae Jeon064e0822013-03-17 17:27:20 +09001061static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001062{
Chao Yud6b7d4b2014-06-12 13:23:41 +08001063 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1064 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +08001065 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001066 return -EINVAL;
1067 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001068}
1069
1070#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1071
1072/*
1073 * Check whether the inode has blocks or not
1074 */
1075static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1076{
1077 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001078 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001079 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001080 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001081}
1082
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001083static inline bool f2fs_has_xattr_block(unsigned int ofs)
1084{
1085 return ofs == XATTR_NODE_OFFSET;
1086}
1087
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001088static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1089 struct inode *inode, blkcnt_t count)
1090{
1091 block_t valid_block_count;
1092
1093 spin_lock(&sbi->stat_lock);
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001094#ifdef CONFIG_F2FS_FAULT_INJECTION
1095 if (time_to_inject(FAULT_BLOCK)) {
1096 spin_unlock(&sbi->stat_lock);
1097 return false;
1098 }
1099#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001100 valid_block_count =
1101 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +08001102 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001103 spin_unlock(&sbi->stat_lock);
1104 return false;
1105 }
1106 inode->i_blocks += count;
1107 sbi->total_valid_block_count = valid_block_count;
1108 sbi->alloc_valid_block_count += (block_t)count;
1109 spin_unlock(&sbi->stat_lock);
1110 return true;
1111}
1112
Gu Zhengda19b0d2013-11-19 18:03:27 +08001113static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001114 struct inode *inode,
1115 blkcnt_t count)
1116{
1117 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001118 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1119 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001120 inode->i_blocks -= count;
1121 sbi->total_valid_block_count -= (block_t)count;
1122 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001123}
1124
1125static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1126{
1127 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001128 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001129}
1130
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001131static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001132{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001133 atomic_inc(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001134 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1135 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001136}
1137
1138static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1139{
1140 atomic_dec(&sbi->nr_pages[count_type]);
1141}
1142
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001143static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001144{
Chao Yu5ac9f362015-06-29 18:14:10 +08001145 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1146 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001147 return;
1148
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001149 atomic_dec(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001150 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1151 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001152}
1153
1154static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1155{
1156 return atomic_read(&sbi->nr_pages[count_type]);
1157}
1158
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001159static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001160{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001161 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001162}
1163
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001164static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1165{
Chao Yu3519e3f2015-12-01 11:56:52 +08001166 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001167 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1168 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1169}
1170
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001171static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1172{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001173 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001174}
1175
1176static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1177{
1178 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1179
1180 /* return NAT or SIT bitmap */
1181 if (flag == NAT_BITMAP)
1182 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1183 else if (flag == SIT_BITMAP)
1184 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1185
1186 return 0;
1187}
1188
Wanpeng Li55141482015-02-26 07:57:20 +08001189static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1190{
1191 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1192}
1193
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001194static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1195{
1196 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001197 int offset;
1198
Wanpeng Li55141482015-02-26 07:57:20 +08001199 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001200 if (flag == NAT_BITMAP)
1201 return &ckpt->sit_nat_version_bitmap;
1202 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001203 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001204 } else {
1205 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001206 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001207 return &ckpt->sit_nat_version_bitmap + offset;
1208 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001209}
1210
1211static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1212{
1213 block_t start_addr;
1214 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001215 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001216
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001217 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001218
1219 /*
1220 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001221 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001222 */
1223 if (!(ckpt_version & 1))
1224 start_addr += sbi->blocks_per_seg;
1225
1226 return start_addr;
1227}
1228
1229static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1230{
1231 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1232}
1233
1234static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001235 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001236{
1237 block_t valid_block_count;
1238 unsigned int valid_node_count;
1239
1240 spin_lock(&sbi->stat_lock);
1241
Gu Zhengef86d702013-11-19 18:03:38 +08001242 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001243 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001244 spin_unlock(&sbi->stat_lock);
1245 return false;
1246 }
1247
Gu Zhengef86d702013-11-19 18:03:38 +08001248 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001249 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001250 spin_unlock(&sbi->stat_lock);
1251 return false;
1252 }
1253
1254 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001255 inode->i_blocks++;
1256
1257 sbi->alloc_valid_block_count++;
1258 sbi->total_valid_node_count++;
1259 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001260 spin_unlock(&sbi->stat_lock);
1261
1262 return true;
1263}
1264
1265static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001266 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001267{
1268 spin_lock(&sbi->stat_lock);
1269
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001270 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1271 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1272 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001273
Gu Zhengef86d702013-11-19 18:03:38 +08001274 inode->i_blocks--;
1275 sbi->total_valid_node_count--;
1276 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001277
1278 spin_unlock(&sbi->stat_lock);
1279}
1280
1281static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1282{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001283 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001284}
1285
1286static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1287{
1288 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001289 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001290 sbi->total_valid_inode_count++;
1291 spin_unlock(&sbi->stat_lock);
1292}
1293
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001294static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001295{
1296 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001297 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001298 sbi->total_valid_inode_count--;
1299 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001300}
1301
1302static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1303{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001304 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001305}
1306
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001307static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1308 pgoff_t index, bool for_write)
1309{
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -07001310#ifdef CONFIG_F2FS_FAULT_INJECTION
1311 struct page *page = find_lock_page(mapping, index);
1312 if (page)
1313 return page;
1314
1315 if (time_to_inject(FAULT_PAGE_ALLOC))
1316 return NULL;
1317#endif
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001318 if (!for_write)
1319 return grab_cache_page(mapping, index);
1320 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1321}
1322
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001323static inline void f2fs_copy_page(struct page *src, struct page *dst)
1324{
1325 char *src_kaddr = kmap(src);
1326 char *dst_kaddr = kmap(dst);
1327
1328 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1329 kunmap(dst);
1330 kunmap(src);
1331}
1332
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001333static inline void f2fs_put_page(struct page *page, int unlock)
1334{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001335 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001336 return;
1337
1338 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001339 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001340 unlock_page(page);
1341 }
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001342 put_page(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001343}
1344
1345static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1346{
1347 if (dn->node_page)
1348 f2fs_put_page(dn->node_page, 1);
1349 if (dn->inode_page && dn->node_page != dn->inode_page)
1350 f2fs_put_page(dn->inode_page, 0);
1351 dn->node_page = NULL;
1352 dn->inode_page = NULL;
1353}
1354
1355static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001356 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001357{
Gu Zhenge8512d22014-03-07 18:43:28 +08001358 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001359}
1360
Gu Zheng7bd59382013-10-22 14:52:26 +08001361static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1362 gfp_t flags)
1363{
1364 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001365
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001366 entry = kmem_cache_alloc(cachep, flags);
1367 if (!entry)
1368 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001369 return entry;
1370}
1371
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001372static inline struct bio *f2fs_bio_alloc(int npages)
1373{
1374 struct bio *bio;
1375
1376 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001377 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001378 if (!bio)
1379 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001380 return bio;
1381}
1382
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001383static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1384 unsigned long index, void *item)
1385{
1386 while (radix_tree_insert(root, index, item))
1387 cond_resched();
1388}
1389
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001390#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1391
1392static inline bool IS_INODE(struct page *page)
1393{
Gu Zheng45590712013-07-15 17:57:38 +08001394 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001395 return RAW_IS_INODE(p);
1396}
1397
1398static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1399{
1400 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1401}
1402
1403static inline block_t datablock_addr(struct page *node_page,
1404 unsigned int offset)
1405{
1406 struct f2fs_node *raw_node;
1407 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001408 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001409 addr_array = blkaddr_in_node(raw_node);
1410 return le32_to_cpu(addr_array[offset]);
1411}
1412
1413static inline int f2fs_test_bit(unsigned int nr, char *addr)
1414{
1415 int mask;
1416
1417 addr += (nr >> 3);
1418 mask = 1 << (7 - (nr & 0x07));
1419 return mask & *addr;
1420}
1421
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001422static inline void f2fs_set_bit(unsigned int nr, char *addr)
1423{
1424 int mask;
1425
1426 addr += (nr >> 3);
1427 mask = 1 << (7 - (nr & 0x07));
1428 *addr |= mask;
1429}
1430
1431static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1432{
1433 int mask;
1434
1435 addr += (nr >> 3);
1436 mask = 1 << (7 - (nr & 0x07));
1437 *addr &= ~mask;
1438}
1439
Gu Zheng52aca072014-10-20 17:45:51 +08001440static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001441{
1442 int mask;
1443 int ret;
1444
1445 addr += (nr >> 3);
1446 mask = 1 << (7 - (nr & 0x07));
1447 ret = mask & *addr;
1448 *addr |= mask;
1449 return ret;
1450}
1451
Gu Zheng52aca072014-10-20 17:45:51 +08001452static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001453{
1454 int mask;
1455 int ret;
1456
1457 addr += (nr >> 3);
1458 mask = 1 << (7 - (nr & 0x07));
1459 ret = mask & *addr;
1460 *addr &= ~mask;
1461 return ret;
1462}
1463
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001464static inline void f2fs_change_bit(unsigned int nr, char *addr)
1465{
1466 int mask;
1467
1468 addr += (nr >> 3);
1469 mask = 1 << (7 - (nr & 0x07));
1470 *addr ^= mask;
1471}
1472
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001473/* used for f2fs_inode_info->flags */
1474enum {
1475 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001476 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001477 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001478 FI_INC_LINK, /* need to increment i_nlink */
1479 FI_ACL_MODE, /* indicate acl mode */
1480 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001481 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001482 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001483 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001484 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001485 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001486 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001487 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001488 FI_APPEND_WRITE, /* inode has appended data */
1489 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001490 FI_NEED_IPU, /* used for ipu per file */
1491 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001492 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001493 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001494 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001495 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001496 FI_INLINE_DOTS, /* indicate inline dot dentries */
Chao Yud323d002015-10-27 09:53:45 +08001497 FI_DO_DEFRAG, /* indicate defragment is running */
Chao Yuc227f912015-12-16 13:09:20 +08001498 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001499};
1500
1501static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1502{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001503 if (!test_bit(flag, &fi->flags))
1504 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001505}
1506
1507static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1508{
1509 return test_bit(flag, &fi->flags);
1510}
1511
1512static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1513{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001514 if (test_bit(flag, &fi->flags))
1515 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001516}
1517
1518static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1519{
1520 fi->i_acl_mode = mode;
1521 set_inode_flag(fi, FI_ACL_MODE);
1522}
1523
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001524static inline void get_inline_info(struct f2fs_inode_info *fi,
1525 struct f2fs_inode *ri)
1526{
1527 if (ri->i_inline & F2FS_INLINE_XATTR)
1528 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001529 if (ri->i_inline & F2FS_INLINE_DATA)
1530 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001531 if (ri->i_inline & F2FS_INLINE_DENTRY)
1532 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001533 if (ri->i_inline & F2FS_DATA_EXIST)
1534 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001535 if (ri->i_inline & F2FS_INLINE_DOTS)
1536 set_inode_flag(fi, FI_INLINE_DOTS);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001537}
1538
1539static inline void set_raw_inline(struct f2fs_inode_info *fi,
1540 struct f2fs_inode *ri)
1541{
1542 ri->i_inline = 0;
1543
1544 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1545 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001546 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1547 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001548 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1549 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001550 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1551 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001552 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1553 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001554}
1555
Chao Yu987c7c32014-03-12 15:59:03 +08001556static inline int f2fs_has_inline_xattr(struct inode *inode)
1557{
1558 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1559}
1560
Chao Yu81ca7352016-01-26 15:39:35 +08001561static inline unsigned int addrs_per_inode(struct inode *inode)
Jaegeuk Kimde936532013-08-12 21:08:03 +09001562{
Chao Yu81ca7352016-01-26 15:39:35 +08001563 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001564 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1565 return DEF_ADDRS_PER_INODE;
1566}
1567
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001568static inline void *inline_xattr_addr(struct page *page)
1569{
Chao Yu695fd1e2014-02-27 19:52:21 +08001570 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001571 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1572 F2FS_INLINE_XATTR_ADDRS]);
1573}
1574
1575static inline int inline_xattr_size(struct inode *inode)
1576{
Chao Yu987c7c32014-03-12 15:59:03 +08001577 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001578 return F2FS_INLINE_XATTR_ADDRS << 2;
1579 else
1580 return 0;
1581}
1582
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001583static inline int f2fs_has_inline_data(struct inode *inode)
1584{
1585 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1586}
1587
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001588static inline void f2fs_clear_inline_inode(struct inode *inode)
1589{
1590 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1591 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1592}
1593
1594static inline int f2fs_exist_data(struct inode *inode)
1595{
1596 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1597}
1598
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001599static inline int f2fs_has_inline_dots(struct inode *inode)
1600{
1601 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1602}
1603
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001604static inline bool f2fs_is_atomic_file(struct inode *inode)
1605{
1606 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1607}
1608
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001609static inline bool f2fs_is_volatile_file(struct inode *inode)
1610{
1611 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1612}
1613
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001614static inline bool f2fs_is_first_block_written(struct inode *inode)
1615{
1616 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1617}
1618
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001619static inline bool f2fs_is_drop_cache(struct inode *inode)
1620{
1621 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1622}
1623
Huajun Li1001b342013-11-10 23:13:16 +08001624static inline void *inline_data_addr(struct page *page)
1625{
Chao Yu695fd1e2014-02-27 19:52:21 +08001626 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001627 return (void *)&(ri->i_addr[1]);
1628}
1629
Chao Yu34d67de2014-09-24 18:15:19 +08001630static inline int f2fs_has_inline_dentry(struct inode *inode)
1631{
1632 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1633}
1634
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001635static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1636{
1637 if (!f2fs_has_inline_dentry(dir))
1638 kunmap(page);
1639}
1640
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001641static inline int is_file(struct inode *inode, int type)
1642{
1643 return F2FS_I(inode)->i_advise & type;
1644}
1645
1646static inline void set_file(struct inode *inode, int type)
1647{
1648 F2FS_I(inode)->i_advise |= type;
1649}
1650
1651static inline void clear_file(struct inode *inode, int type)
1652{
1653 F2FS_I(inode)->i_advise &= ~type;
1654}
1655
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001656static inline int f2fs_readonly(struct super_block *sb)
1657{
1658 return sb->s_flags & MS_RDONLY;
1659}
1660
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001661static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1662{
1663 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1664}
1665
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001666static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1667{
1668 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1669 sbi->sb->s_flags |= MS_RDONLY;
1670}
1671
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001672static inline bool is_dot_dotdot(const struct qstr *str)
1673{
1674 if (str->len == 1 && str->name[0] == '.')
1675 return true;
1676
1677 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1678 return true;
1679
1680 return false;
1681}
1682
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001683static inline bool f2fs_may_extent_tree(struct inode *inode)
1684{
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001685 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1686 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1687 return false;
1688
Al Viro886f56f2015-12-05 03:56:06 -05001689 return S_ISREG(inode->i_mode);
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001690}
1691
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001692static inline void *f2fs_kmalloc(size_t size, gfp_t flags)
1693{
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -07001694#ifdef CONFIG_F2FS_FAULT_INJECTION
1695 if (time_to_inject(FAULT_KMALLOC))
1696 return NULL;
1697#endif
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001698 return kmalloc(size, flags);
1699}
1700
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001701static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1702{
1703 void *ret;
1704
1705 ret = kmalloc(size, flags | __GFP_NOWARN);
1706 if (!ret)
1707 ret = __vmalloc(size, flags, PAGE_KERNEL);
1708 return ret;
1709}
1710
1711static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1712{
1713 void *ret;
1714
1715 ret = kzalloc(size, flags | __GFP_NOWARN);
1716 if (!ret)
1717 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1718 return ret;
1719}
1720
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001721#define get_inode_mode(i) \
1722 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1723 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1724
Chao Yu267378d2014-04-23 14:10:24 +08001725/* get offset of first page in next direct node */
Chao Yu81ca7352016-01-26 15:39:35 +08001726#define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1727 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1728 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1729 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
Chao Yu267378d2014-04-23 14:10:24 +08001730
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001731/*
1732 * file.c
1733 */
1734int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1735void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001736int truncate_blocks(struct inode *, u64, bool);
Chao Yub0154892015-08-24 17:39:42 +08001737int f2fs_truncate(struct inode *, bool);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001738int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001739int f2fs_setattr(struct dentry *, struct iattr *);
1740int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001741int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001742long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001743long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001744
1745/*
1746 * inode.c
1747 */
1748void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001749struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001750int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -08001751int update_inode(struct inode *, struct page *);
1752int update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001753int f2fs_write_inode(struct inode *, struct writeback_control *);
1754void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001755void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001756
1757/*
1758 * namei.c
1759 */
1760struct dentry *f2fs_get_parent(struct dentry *child);
1761
1762/*
1763 * dir.c
1764 */
Chao Yudbeacf02014-09-24 18:17:04 +08001765extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001766void set_de_type(struct f2fs_dir_entry *, umode_t);
Chao Yu675f10b2016-02-22 18:29:18 +08001767unsigned char get_de_type(struct f2fs_dir_entry *);
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001768struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001769 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001770bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001771 unsigned int, struct fscrypt_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001772void do_make_empty_dir(struct inode *, struct inode *,
1773 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001774struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001775 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001776void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001777int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001778void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001779struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1780 struct page **);
1781struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1782ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1783void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1784 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001785int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001786void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001787 const struct qstr *, f2fs_hash_t , unsigned int);
Chao Yu675f10b2016-02-22 18:29:18 +08001788int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1789 struct inode *, nid_t, umode_t);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001790int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1791 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001792void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1793 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001794int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001795bool f2fs_empty_dir(struct inode *);
1796
Al Virob7f7a5e2013-01-25 16:15:43 -05001797static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1798{
David Howells2b0143b2015-03-17 22:25:59 +00001799 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001800 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001801}
1802
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001803/*
1804 * super.c
1805 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001806int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001807int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001808extern __printf(3, 4)
1809void f2fs_msg(struct super_block *, const char *, const char *, ...);
Shawn Lin984ec632016-02-17 11:26:32 +08001810int sanity_check_ckpt(struct f2fs_sb_info *sbi);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001811
1812/*
1813 * hash.c
1814 */
Gu Zhengeee61602014-06-24 18:21:23 +08001815f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001816
1817/*
1818 * node.c
1819 */
1820struct dnode_of_data;
1821struct node_info;
1822
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001823bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001824int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001825bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001826bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001827void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
Chao Yu3cf45742016-01-26 15:40:44 +08001828pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001829int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1830int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001831int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001832int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001833int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001834struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001835struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001836void ra_node_page(struct f2fs_sb_info *, nid_t);
1837struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1838struct page *get_node_page_ra(struct page *, int);
1839void sync_inode_page(struct dnode_of_data *);
Chao Yuda011cc2016-04-27 21:40:15 +08001840void move_node_page(struct page *, int);
Jaegeuk Kim608514d2016-04-15 09:43:17 -07001841int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *,
1842 bool);
Jaegeuk Kim52681372016-04-13 16:24:44 -07001843int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001844bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1845void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1846void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001847int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001848void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001849void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001850int recover_inode_page(struct f2fs_sb_info *, struct page *);
1851int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1852 struct f2fs_summary_block *);
1853void flush_nat_entries(struct f2fs_sb_info *);
1854int build_node_manager(struct f2fs_sb_info *);
1855void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001856int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001857void destroy_node_manager_caches(void);
1858
1859/*
1860 * segment.c
1861 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001862void register_inmem_page(struct inode *, struct page *);
Chao Yu29b96b52016-02-06 14:38:29 +08001863void drop_inmem_pages(struct inode *);
1864int commit_inmem_pages(struct inode *);
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001865void f2fs_balance_fs(struct f2fs_sb_info *, bool);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001866void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001867int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001868int create_flush_cmd_control(struct f2fs_sb_info *);
1869void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001870void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001871bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001872void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001873void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001874void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001875bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001876int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001877void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001878int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001879struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001880void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001881void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001882void write_node_page(unsigned int, struct f2fs_io_info *);
1883void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1884void rewrite_data_page(struct f2fs_io_info *);
Chao Yu4356e482016-02-23 17:52:43 +08001885void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
1886 block_t, block_t, bool, bool);
Chao Yu528e3452015-05-28 19:15:35 +08001887void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
Chao Yu28bc1062016-02-06 14:40:34 +08001888 block_t, block_t, unsigned char, bool, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001889void allocate_data_block(struct f2fs_sb_info *, struct page *,
1890 block_t, block_t *, struct f2fs_summary *, int);
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08001891void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
Chao Yu08b39fb2015-10-08 13:27:34 +08001892void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001893void write_data_summaries(struct f2fs_sb_info *, block_t);
1894void write_node_summaries(struct f2fs_sb_info *, block_t);
Chao Yudfc08a12016-02-14 18:50:40 +08001895int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001896void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001897int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001898void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001899int __init create_segment_manager_caches(void);
1900void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001901
1902/*
1903 * checkpoint.c
1904 */
1905struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1906struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08001907struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08001908bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08001909int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08001910void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001911long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Chao Yua49324f2015-12-15 13:29:47 +08001912void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1913void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim74ef9242016-05-02 22:09:56 -07001914void release_ino_entry(struct f2fs_sb_info *, bool);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001915bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001916int acquire_orphan_inode(struct f2fs_sb_info *);
1917void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001918void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1919void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08001920int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001921int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001922void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001923void add_dirty_dir_inode(struct inode *);
Chao Yuc227f912015-12-16 13:09:20 +08001924void remove_dirty_inode(struct inode *);
Chao Yu6d5a1492015-12-24 18:04:56 +08001925int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
Chao Yuc34f42e2015-12-23 17:50:30 +08001926int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001927void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001928int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001929void destroy_checkpoint_caches(void);
1930
1931/*
1932 * data.c
1933 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001934void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Chao Yu0c3a5792016-01-18 18:28:11 +08001935void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
1936 struct page *, nid_t, enum page_type, int);
Chao Yu406657d2016-02-24 17:17:55 +08001937void f2fs_flush_merged_bios(struct f2fs_sb_info *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001938int f2fs_submit_page_bio(struct f2fs_io_info *);
1939void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08001940void set_data_blkaddr(struct dnode_of_data *);
Chao Yuf28b3432016-02-24 17:16:47 +08001941void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001942int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08001943int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kimb439b102016-02-03 13:09:09 -08001944ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
Huajun Lib6009652013-11-10 23:13:18 +08001945int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001946struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07001947struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001948struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001949struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001950int do_write_data_page(struct f2fs_io_info *);
Chao Yud323d002015-10-27 09:53:45 +08001951int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001952int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08001953void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1954int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001955
1956/*
1957 * gc.c
1958 */
1959int start_gc_thread(struct f2fs_sb_info *);
1960void stop_gc_thread(struct f2fs_sb_info *);
Chao Yu81ca7352016-01-26 15:39:35 +08001961block_t start_bidx_of_node(unsigned int, struct inode *);
Chao Yud530d4d2015-10-05 22:22:44 +08001962int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001963void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001964
1965/*
1966 * recovery.c
1967 */
Jaegeuk Kim6781eab2016-03-23 16:12:58 -07001968int recover_fsync_data(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001969bool space_for_roll_forward(struct f2fs_sb_info *);
1970
1971/*
1972 * debug.c
1973 */
1974#ifdef CONFIG_F2FS_STAT_FS
1975struct f2fs_stat_info {
1976 struct list_head stat_list;
1977 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001978 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1979 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08001980 unsigned long long hit_largest, hit_cached, hit_rbtree;
1981 unsigned long long hit_total, total_ext;
Jaegeuk Kimc00ba552015-12-31 15:24:14 -08001982 int ext_tree, zombie_tree, ext_node;
Chao Yu33fbd512015-12-17 17:14:44 +08001983 int ndirty_node, ndirty_meta;
1984 int ndirty_dent, ndirty_dirs, ndirty_data, ndirty_files;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001985 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001986 int total_count, utilization;
Chao Yud5e8f6c2015-07-15 17:28:53 +08001987 int bg_gc, inmem_pages, wb_pages;
1988 int inline_xattr, inline_inode, inline_dir;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001989 unsigned int valid_count, valid_node_count, valid_inode_count;
1990 unsigned int bimodal, avg_vblocks;
1991 int util_free, util_valid, util_invalid;
1992 int rsvd_segs, overp_segs;
1993 int dirty_count, node_pages, meta_pages;
Jaegeuk Kim42190d22016-01-09 13:45:17 -08001994 int prefree_count, call_count, cp_count, bg_cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001995 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09001996 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001997 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09001998 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001999 int curseg[NR_CURSEG_TYPE];
2000 int cursec[NR_CURSEG_TYPE];
2001 int curzone[NR_CURSEG_TYPE];
2002
2003 unsigned int segment_count[2];
2004 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09002005 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08002006 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002007};
2008
Gu Zheng963d4f72013-07-12 14:47:11 +08002009static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2010{
Chris Fries6c311ec2014-01-17 14:44:39 -06002011 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08002012}
2013
Changman Lee942e0be2014-02-13 15:12:29 +09002014#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002015#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002016#define stat_inc_call_count(si) ((si)->call_count++)
2017#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
Chao Yu33fbd512015-12-17 17:14:44 +08002018#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2019#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
Chao Yu5b7ee372015-09-30 17:38:48 +08002020#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2021#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2022#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2023#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08002024#define stat_inc_inline_xattr(inode) \
2025 do { \
2026 if (f2fs_has_inline_xattr(inode)) \
2027 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2028 } while (0)
2029#define stat_dec_inline_xattr(inode) \
2030 do { \
2031 if (f2fs_has_inline_xattr(inode)) \
2032 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2033 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002034#define stat_inc_inline_inode(inode) \
2035 do { \
2036 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002037 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002038 } while (0)
2039#define stat_dec_inline_inode(inode) \
2040 do { \
2041 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002042 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002043 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002044#define stat_inc_inline_dir(inode) \
2045 do { \
2046 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002047 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002048 } while (0)
2049#define stat_dec_inline_dir(inode) \
2050 do { \
2051 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002052 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002053 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002054#define stat_inc_seg_type(sbi, curseg) \
2055 ((sbi)->segment_count[(curseg)->alloc_type]++)
2056#define stat_inc_block_count(sbi, curseg) \
2057 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09002058#define stat_inc_inplace_blocks(sbi) \
2059 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09002060#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002061 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002062 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002063 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002064 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002065 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002066 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2067 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002068 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002069 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2070 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002071 } while (0)
2072
2073#define stat_inc_tot_blk_count(si, blks) \
2074 (si->tot_blks += (blks))
2075
Changman Leee1235982014-12-23 08:37:39 +09002076#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002077 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002078 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002079 stat_inc_tot_blk_count(si, blks); \
2080 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002081 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002082 } while (0)
2083
Changman Leee1235982014-12-23 08:37:39 +09002084#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002085 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002086 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002087 stat_inc_tot_blk_count(si, blks); \
2088 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002089 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002090 } while (0)
2091
2092int f2fs_build_stats(struct f2fs_sb_info *);
2093void f2fs_destroy_stats(struct f2fs_sb_info *);
Chao Yu787c7b8c2015-10-29 09:13:04 +08002094int __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09002095void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002096#else
Changman Lee942e0be2014-02-13 15:12:29 +09002097#define stat_inc_cp_count(si)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002098#define stat_inc_bg_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002099#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002100#define stat_inc_bggc_count(si)
Chao Yu33fbd512015-12-17 17:14:44 +08002101#define stat_inc_dirty_inode(sbi, type)
2102#define stat_dec_dirty_inode(sbi, type)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002103#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08002104#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002105#define stat_inc_largest_node_hit(sbi)
2106#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002107#define stat_inc_inline_xattr(inode)
2108#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002109#define stat_inc_inline_inode(inode)
2110#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002111#define stat_inc_inline_dir(inode)
2112#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002113#define stat_inc_seg_type(sbi, curseg)
2114#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002115#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002116#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002117#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002118#define stat_inc_data_blk_count(sbi, blks, gc_type)
2119#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002120
2121static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2122static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Chao Yu787c7b8c2015-10-29 09:13:04 +08002123static inline int __init f2fs_create_root_stats(void) { return 0; }
Namjae Jeon4589d252013-01-15 19:58:47 +09002124static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002125#endif
2126
2127extern const struct file_operations f2fs_dir_operations;
2128extern const struct file_operations f2fs_file_operations;
2129extern const struct inode_operations f2fs_file_inode_operations;
2130extern const struct address_space_operations f2fs_dblock_aops;
2131extern const struct address_space_operations f2fs_node_aops;
2132extern const struct address_space_operations f2fs_meta_aops;
2133extern const struct inode_operations f2fs_dir_inode_operations;
2134extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002135extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002136extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002137extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002138
Huajun Lie18c65b2013-11-10 23:13:19 +08002139/*
2140 * inline.c
2141 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002142bool f2fs_may_inline_data(struct inode *);
2143bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002144void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002145bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002146int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002147int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2148int f2fs_convert_inline_inode(struct inode *);
2149int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002150bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002151struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002152 struct fscrypt_name *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002153struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2154int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002155int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2156 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002157void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2158 struct inode *, struct inode *);
2159bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002160int f2fs_read_inline_dir(struct file *, struct dir_context *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002161 struct fscrypt_str *);
Jaegeuk Kim67f8cf3c2015-10-15 11:34:49 -07002162int f2fs_inline_data_fiemap(struct inode *,
2163 struct fiemap_extent_info *, __u64, __u64);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002164
2165/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002166 * shrinker.c
2167 */
2168unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2169unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2170void f2fs_join_shrinker(struct f2fs_sb_info *);
2171void f2fs_leave_shrinker(struct f2fs_sb_info *);
2172
2173/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002174 * extent_cache.c
2175 */
2176unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
Jaegeuk Kimed3d1252015-12-28 11:39:06 -08002177bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
Chao Yua28ef1f2015-07-08 17:59:36 +08002178unsigned int f2fs_destroy_extent_node(struct inode *);
2179void f2fs_destroy_extent_tree(struct inode *);
2180bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2181void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002182void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2183 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002184void init_extent_cache_info(struct f2fs_sb_info *);
2185int __init create_extent_cache(void);
2186void destroy_extent_cache(void);
2187
2188/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002189 * crypto support
2190 */
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002191static inline bool f2fs_encrypted_inode(struct inode *inode)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002192{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002193 return file_is_encrypt(inode);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002194}
2195
2196static inline void f2fs_set_encrypted_inode(struct inode *inode)
2197{
2198#ifdef CONFIG_F2FS_FS_ENCRYPTION
2199 file_set_encrypt(inode);
2200#endif
2201}
2202
2203static inline bool f2fs_bio_encrypted(struct bio *bio)
2204{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002205 return bio->bi_private != NULL;
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002206}
2207
2208static inline int f2fs_sb_has_crypto(struct super_block *sb)
2209{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002210 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002211}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002212
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002213static inline bool f2fs_may_encrypt(struct inode *inode)
2214{
2215#ifdef CONFIG_F2FS_FS_ENCRYPTION
Al Viro886f56f2015-12-05 03:56:06 -05002216 umode_t mode = inode->i_mode;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002217
2218 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2219#else
2220 return 0;
2221#endif
2222}
2223
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002224#ifndef CONFIG_F2FS_FS_ENCRYPTION
2225#define fscrypt_set_d_op(i)
2226#define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2227#define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2228#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2229#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2230#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2231#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2232#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2233#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2234#define fscrypt_process_policy fscrypt_notsupp_process_policy
2235#define fscrypt_get_policy fscrypt_notsupp_get_policy
2236#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2237#define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2238#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2239#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2240#define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2241#define fscrypt_free_filename fscrypt_notsupp_free_filename
2242#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2243#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2244#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2245#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2246#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002247#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002248#endif