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Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _LINUX_F2FS_H
12#define _LINUX_F2FS_H
13
14#include <linux/types.h>
15#include <linux/page-flags.h>
16#include <linux/buffer_head.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090017#include <linux/slab.h>
18#include <linux/crc32.h>
19#include <linux/magic.h>
Jaegeuk Kimc2d715d2013-08-08 15:56:49 +090020#include <linux/kobject.h>
Gu Zheng7bd59382013-10-22 14:52:26 +080021#include <linux/sched.h>
Jaegeuk Kim39307a82015-09-22 13:50:47 -070022#include <linux/vmalloc.h>
Jaegeuk Kim740432f2015-08-14 11:43:56 -070023#include <linux/bio.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090024
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090025#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070026#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090027#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090028#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070029#define f2fs_bug_on(sbi, condition) \
30 do { \
31 if (unlikely(condition)) { \
32 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080033 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070034 } \
35 } while (0)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090036#define f2fs_down_write(x, y) down_write(x)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090037#endif
38
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090039/*
40 * For mount options
41 */
42#define F2FS_MOUNT_BG_GC 0x00000001
43#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
44#define F2FS_MOUNT_DISCARD 0x00000004
45#define F2FS_MOUNT_NOHEAP 0x00000008
46#define F2FS_MOUNT_XATTR_USER 0x00000010
47#define F2FS_MOUNT_POSIX_ACL 0x00000020
48#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +090049#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +080050#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +080051#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
52#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
53#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -070054#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +080055#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim6aefd932015-10-05 11:02:54 -070056#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090057
58#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
59#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
60#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
61
62#define ver_after(a, b) (typecheck(unsigned long long, a) && \
63 typecheck(unsigned long long, b) && \
64 ((long long)((a) - (b)) > 0))
65
Jaegeuk Kima9841c42013-05-24 12:41:04 +090066typedef u32 block_t; /*
67 * should not change u32, since it is the on-disk block
68 * address format, __le32.
69 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090070typedef u32 nid_t;
71
72struct f2fs_mount_info {
73 unsigned int opt;
74};
75
Jaegeuk Kimcde4de12015-04-20 13:57:51 -070076#define F2FS_FEATURE_ENCRYPT 0x0001
77
Jaegeuk Kim76f105a2015-04-13 15:10:36 -070078#define F2FS_HAS_FEATURE(sb, mask) \
79 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
80#define F2FS_SET_FEATURE(sb, mask) \
81 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
82#define F2FS_CLEAR_FEATURE(sb, mask) \
83 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
84
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090085#define CRCPOLY_LE 0xedb88320
86
87static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090088{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090089 unsigned char *p = (unsigned char *)buf;
90 __u32 crc = F2FS_SUPER_MAGIC;
91 int i;
92
93 while (len--) {
94 crc ^= *p++;
95 for (i = 0; i < 8; i++)
96 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
97 }
98 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090099}
100
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900101static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900102{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +0900103 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900104}
105
106/*
107 * For checkpoint manager
108 */
109enum {
110 NAT_BITMAP,
111 SIT_BITMAP
112};
113
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700114enum {
115 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800116 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700117 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700118 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700119 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700120};
121
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800122#define DEF_BATCHED_TRIM_SECTIONS 32
123#define BATCHED_TRIM_SEGMENTS(sbi) \
124 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700125#define BATCHED_TRIM_BLOCKS(sbi) \
126 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700127#define DEF_CP_INTERVAL 60 /* 60 secs */
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800128
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700129struct cp_control {
130 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700131 __u64 trim_start;
132 __u64 trim_end;
133 __u64 trim_minlen;
134 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700135};
136
Chao Yu662befd2014-02-07 16:11:53 +0800137/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800138 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800139 */
140enum {
141 META_CP,
142 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800143 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700144 META_SSA,
145 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800146};
147
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700148/* for the list of ino */
149enum {
150 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700151 APPEND_INO, /* for append ino list */
152 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700153 MAX_INO_ENTRY, /* max. list */
154};
155
156struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900157 struct list_head list; /* list head */
158 nid_t ino; /* inode number */
159};
160
Chao Yu06292072014-12-29 15:56:18 +0800161/*
162 * for the list of directory inodes or gc inodes.
163 * NOTE: there are two slab users for this structure, if we add/modify/delete
164 * fields in structure for one of slab users, it may affect fields or size of
165 * other one, in this condition, it's better to split both of slab and related
166 * data structure.
167 */
168struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900169 struct list_head list; /* list head */
170 struct inode *inode; /* vfs inode pointer */
171};
172
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900173/* for the list of blockaddresses to be discarded */
174struct discard_entry {
175 struct list_head list; /* list head */
176 block_t blkaddr; /* block address to be discarded */
177 int len; /* # of consecutive blocks of the discard */
178};
179
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900180/* for the list of fsync inodes, used only during recovery */
181struct fsync_inode_entry {
182 struct list_head list; /* list head */
183 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700184 block_t blkaddr; /* block address locating the last fsync */
185 block_t last_dentry; /* block address locating the last dentry */
186 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900187};
188
189#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
190#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
191
192#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
193#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
194#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
195#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
196
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700197#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
198#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
199
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900200static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
201{
202 int before = nats_in_cursum(rs);
203 rs->n_nats = cpu_to_le16(before + i);
204 return before;
205}
206
207static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
208{
209 int before = sits_in_cursum(rs);
210 rs->n_sits = cpu_to_le16(before + i);
211 return before;
212}
213
Chao Yu184a5cd2014-09-04 18:13:01 +0800214static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
215 int type)
216{
217 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700218 return size <= MAX_NAT_JENTRIES(sum);
219 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800220}
221
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900222/*
Namjae Jeone9750822013-02-04 23:41:41 +0900223 * ioctl commands
224 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700225#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
226#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800227#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700228
229#define F2FS_IOCTL_MAGIC 0xf5
230#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
231#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700232#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800233#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
234#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800235#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Chao Yu456b88e2015-10-05 22:24:19 +0800236#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
Chao Yud323d002015-10-27 09:53:45 +0800237#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
Namjae Jeone9750822013-02-04 23:41:41 +0900238
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700239#define F2FS_IOC_SET_ENCRYPTION_POLICY \
240 _IOR('f', 19, struct f2fs_encryption_policy)
241#define F2FS_IOC_GET_ENCRYPTION_PWSALT \
242 _IOW('f', 20, __u8[16])
243#define F2FS_IOC_GET_ENCRYPTION_POLICY \
244 _IOW('f', 21, struct f2fs_encryption_policy)
245
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800246/*
247 * should be same as XFS_IOC_GOINGDOWN.
248 * Flags for going down operation used by FS_IOC_GOINGDOWN
249 */
250#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
251#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
252#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
253#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
Jaegeuk Kimc912a822015-10-07 09:46:37 -0700254#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800255
Namjae Jeone9750822013-02-04 23:41:41 +0900256#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
257/*
258 * ioctl commands in 32 bit emulation
259 */
Chao Yu04ef4b62015-11-10 18:44:20 +0800260#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
261#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
262#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
Namjae Jeone9750822013-02-04 23:41:41 +0900263#endif
264
Chao Yud323d002015-10-27 09:53:45 +0800265struct f2fs_defragment {
266 u64 start;
267 u64 len;
268};
269
Namjae Jeone9750822013-02-04 23:41:41 +0900270/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900271 * For INODE and NODE manager
272 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700273/* for directory operations */
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -0700274struct f2fs_str {
275 unsigned char *name;
276 u32 len;
277};
278
279struct f2fs_filename {
280 const struct qstr *usr_fname;
281 struct f2fs_str disk_name;
282 f2fs_hash_t hash;
283#ifdef CONFIG_F2FS_FS_ENCRYPTION
284 struct f2fs_str crypto_buf;
285#endif
286};
287
288#define FSTR_INIT(n, l) { .name = n, .len = l }
289#define FSTR_TO_QSTR(f) QSTR_INIT((f)->name, (f)->len)
290#define fname_name(p) ((p)->disk_name.name)
291#define fname_len(p) ((p)->disk_name.len)
292
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700293struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700294 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700295 const void *bitmap;
296 struct f2fs_dir_entry *dentry;
297 __u8 (*filename)[F2FS_SLOT_LEN];
298 int max;
299};
300
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700301static inline void make_dentry_ptr(struct inode *inode,
302 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700303{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700304 d->inode = inode;
305
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700306 if (type == 1) {
307 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
308 d->max = NR_DENTRY_IN_BLOCK;
309 d->bitmap = &t->dentry_bitmap;
310 d->dentry = t->dentry;
311 d->filename = t->filename;
312 } else {
313 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
314 d->max = NR_INLINE_DENTRY;
315 d->bitmap = &t->dentry_bitmap;
316 d->dentry = t->dentry;
317 d->filename = t->filename;
318 }
319}
320
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900321/*
322 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
323 * as its node offset to distinguish from index node blocks.
324 * But some bits are used to mark the node block.
325 */
326#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
327 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900328enum {
329 ALLOC_NODE, /* allocate a new node page if needed */
330 LOOKUP_NODE, /* look up a node without readahead */
331 LOOKUP_NODE_RA, /*
332 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800333 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900334 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900335};
336
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700337#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900338
Chao Yu817202d92014-04-28 17:59:43 +0800339#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
340
Chao Yu13054c52015-02-05 17:52:58 +0800341/* vector size for gang look-up from extent cache that consists of radix tree */
342#define EXT_TREE_VEC_SIZE 64
343
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900344/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800345#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
346
347/* number of extent info in extent cache we try to shrink */
348#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900349
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900350struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800351 unsigned int fofs; /* start offset in a file */
352 u32 blk; /* start block address of the extent */
353 unsigned int len; /* length of the extent */
354};
355
356struct extent_node {
357 struct rb_node rb_node; /* rb node located in rb-tree */
358 struct list_head list; /* node in global extent list of sbi */
359 struct extent_info ei; /* extent info */
360};
361
362struct extent_tree {
363 nid_t ino; /* inode number */
364 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800365 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700366 struct extent_info largest; /* largested extent info */
Chao Yu13054c52015-02-05 17:52:58 +0800367 rwlock_t lock; /* protect extent info rb-tree */
368 atomic_t refcount; /* reference count of rb-tree */
369 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900370};
371
372/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700373 * This structure is taken from ext4_map_blocks.
374 *
375 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
376 */
377#define F2FS_MAP_NEW (1 << BH_New)
378#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700379#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
380#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
381 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700382
383struct f2fs_map_blocks {
384 block_t m_pblk;
385 block_t m_lblk;
386 unsigned int m_len;
387 unsigned int m_flags;
388};
389
Chao Yue2b4e2b2015-08-19 19:11:19 +0800390/* for flag in get_data_block */
391#define F2FS_GET_BLOCK_READ 0
392#define F2FS_GET_BLOCK_DIO 1
393#define F2FS_GET_BLOCK_FIEMAP 2
394#define F2FS_GET_BLOCK_BMAP 3
395
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700396/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900397 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
398 */
399#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900400#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700401#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700402#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900403
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700404#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
405#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
406#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
407#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
408#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
409#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700410#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
411#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
412#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700413#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
414#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700415
416/* Encryption algorithms */
417#define F2FS_ENCRYPTION_MODE_INVALID 0
418#define F2FS_ENCRYPTION_MODE_AES_256_XTS 1
419#define F2FS_ENCRYPTION_MODE_AES_256_GCM 2
420#define F2FS_ENCRYPTION_MODE_AES_256_CBC 3
421#define F2FS_ENCRYPTION_MODE_AES_256_CTS 4
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700422
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700423#include "f2fs_crypto.h"
424
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900425#define DEF_DIR_LEVEL 0
426
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900427struct f2fs_inode_info {
428 struct inode vfs_inode; /* serve a vfs inode */
429 unsigned long i_flags; /* keep an inode flags for ioctl */
430 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900431 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900432 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900433 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900434 umode_t i_acl_mode; /* keep file acl mode temporarily */
435
436 /* Use below internally in f2fs*/
437 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900438 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700439 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900440 f2fs_hash_t chash; /* hash value of given file name */
441 unsigned int clevel; /* maximum level of given file name */
442 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900443 unsigned long long xattr_ver; /* cp version of xattr modification */
Chao Yu06292072014-12-29 15:56:18 +0800444 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700445
446 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
447 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700448
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700449 struct extent_tree *extent_tree; /* cached extent_tree entry */
450
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700451#ifdef CONFIG_F2FS_FS_ENCRYPTION
452 /* Encryption params */
453 struct f2fs_crypt_info *i_crypt_info;
454#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900455};
456
457static inline void get_extent_info(struct extent_info *ext,
458 struct f2fs_extent i_ext)
459{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900460 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800461 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900462 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900463}
464
465static inline void set_raw_extent(struct extent_info *ext,
466 struct f2fs_extent *i_ext)
467{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900468 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800469 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900470 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900471}
472
Chao Yu429511c2015-02-05 17:54:31 +0800473static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
474 u32 blk, unsigned int len)
475{
476 ei->fofs = fofs;
477 ei->blk = blk;
478 ei->len = len;
479}
480
Chao Yu0bdee482015-03-19 19:27:51 +0800481static inline bool __is_extent_same(struct extent_info *ei1,
482 struct extent_info *ei2)
483{
484 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
485 ei1->len == ei2->len);
486}
487
Chao Yu429511c2015-02-05 17:54:31 +0800488static inline bool __is_extent_mergeable(struct extent_info *back,
489 struct extent_info *front)
490{
491 return (back->fofs + back->len == front->fofs &&
492 back->blk + back->len == front->blk);
493}
494
495static inline bool __is_back_mergeable(struct extent_info *cur,
496 struct extent_info *back)
497{
498 return __is_extent_mergeable(back, cur);
499}
500
501static inline bool __is_front_mergeable(struct extent_info *cur,
502 struct extent_info *front)
503{
504 return __is_extent_mergeable(cur, front);
505}
506
Chao Yu4abd3f52015-09-22 21:07:47 +0800507static inline void __try_update_largest_extent(struct extent_tree *et,
508 struct extent_node *en)
509{
510 if (en->ei.len > et->largest.len)
511 et->largest = en->ei;
512}
513
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900514struct f2fs_nm_info {
515 block_t nat_blkaddr; /* base disk address of NAT */
516 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900517 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900518 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900519 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800520 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900521
522 /* NAT cache management */
523 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700524 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800525 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900526 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700527 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800528 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900529
530 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900531 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900532 struct list_head free_nid_list; /* a list for free nids */
533 spinlock_t free_nid_list_lock; /* protect free nid list */
534 unsigned int fcnt; /* the number of free node id */
535 struct mutex build_lock; /* lock for build free nids */
536
537 /* for checkpoint */
538 char *nat_bitmap; /* NAT bitmap pointer */
539 int bitmap_size; /* bitmap size */
540};
541
542/*
543 * this structure is used as one of function parameters.
544 * all the information are dedicated to a given direct node block determined
545 * by the data offset in a file.
546 */
547struct dnode_of_data {
548 struct inode *inode; /* vfs inode pointer */
549 struct page *inode_page; /* its inode page, NULL is possible */
550 struct page *node_page; /* cached direct node page */
551 nid_t nid; /* node id of the direct node block */
552 unsigned int ofs_in_node; /* data offset in the node page */
553 bool inode_page_locked; /* inode page is locked or not */
554 block_t data_blkaddr; /* block address of the node block */
555};
556
557static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
558 struct page *ipage, struct page *npage, nid_t nid)
559{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900560 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900561 dn->inode = inode;
562 dn->inode_page = ipage;
563 dn->node_page = npage;
564 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900565}
566
567/*
568 * For SIT manager
569 *
570 * By default, there are 6 active log areas across the whole main area.
571 * When considering hot and cold data separation to reduce cleaning overhead,
572 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
573 * respectively.
574 * In the current design, you should not change the numbers intentionally.
575 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
576 * logs individually according to the underlying devices. (default: 6)
577 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
578 * data and 8 for node logs.
579 */
580#define NR_CURSEG_DATA_TYPE (3)
581#define NR_CURSEG_NODE_TYPE (3)
582#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
583
584enum {
585 CURSEG_HOT_DATA = 0, /* directory entry blocks */
586 CURSEG_WARM_DATA, /* data blocks */
587 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
588 CURSEG_HOT_NODE, /* direct node blocks of directory files */
589 CURSEG_WARM_NODE, /* direct node blocks of normal files */
590 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800591 NO_CHECK_TYPE,
592 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900593};
594
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900595struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900596 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800597 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900598 int ret;
599};
600
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800601struct flush_cmd_control {
602 struct task_struct *f2fs_issue_flush; /* flush thread */
603 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800604 struct llist_head issue_list; /* list for command issue */
605 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800606};
607
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900608struct f2fs_sm_info {
609 struct sit_info *sit_info; /* whole segment information */
610 struct free_segmap_info *free_info; /* free segment information */
611 struct dirty_seglist_info *dirty_info; /* dirty segment information */
612 struct curseg_info *curseg_array; /* active segment information */
613
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900614 block_t seg0_blkaddr; /* block address of 0'th segment */
615 block_t main_blkaddr; /* start block address of main area */
616 block_t ssa_blkaddr; /* start block address of SSA area */
617
618 unsigned int segment_count; /* total # of segments */
619 unsigned int main_segments; /* # of segments in main area */
620 unsigned int reserved_segments; /* # of reserved segments */
621 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900622
623 /* a threshold to reclaim prefree segments */
624 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900625
626 /* for small discard management */
627 struct list_head discard_list; /* 4KB discard list */
628 int nr_discards; /* # of discards in the list */
629 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900630
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800631 /* for batched trimming */
632 unsigned int trim_sections; /* # of sections to trim */
633
Chao Yu184a5cd2014-09-04 18:13:01 +0800634 struct list_head sit_entry_set; /* sit entry set list */
635
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900636 unsigned int ipu_policy; /* in-place-update policy */
637 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700638 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900639
640 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800641 struct flush_cmd_control *cmd_control_info;
642
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900643};
644
645/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900646 * For superblock
647 */
648/*
649 * COUNT_TYPE for monitoring
650 *
651 * f2fs monitors the number of several block types such as on-writeback,
652 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
653 */
654enum count_type {
655 F2FS_WRITEBACK,
656 F2FS_DIRTY_DENTS,
657 F2FS_DIRTY_NODES,
658 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800659 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900660 NR_COUNT_TYPE,
661};
662
663/*
arter97e1c42042014-08-06 23:22:50 +0900664 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900665 * The available types are:
666 * DATA User data pages. It operates as async mode.
667 * NODE Node pages. It operates as async mode.
668 * META FS metadata pages such as SIT, NAT, CP.
669 * NR_PAGE_TYPE The number of page types.
670 * META_FLUSH Make sure the previous pages are written
671 * with waiting the bio's completion
672 * ... Only can be used with META.
673 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900674#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900675enum page_type {
676 DATA,
677 NODE,
678 META,
679 NR_PAGE_TYPE,
680 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700681 INMEM, /* the below types are used by tracepoints only. */
682 INMEM_DROP,
683 IPU,
684 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900685};
686
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900687struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700688 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800689 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
690 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800691 block_t blk_addr; /* block address to be written */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700692 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700693 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900694};
695
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900696#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900697struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900698 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900699 struct bio *bio; /* bios to merge */
700 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900701 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800702 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900703};
704
Chao Yu67298802014-11-18 11:18:36 +0800705/* for inner inode cache management */
706struct inode_management {
707 struct radix_tree_root ino_root; /* ino entry array */
708 spinlock_t ino_lock; /* for ino entry lock */
709 struct list_head ino_list; /* inode list head */
710 unsigned long ino_num; /* number of entries */
711};
712
Chao Yucaf00472015-01-28 17:48:42 +0800713/* For s_flag in struct f2fs_sb_info */
714enum {
715 SBI_IS_DIRTY, /* dirty flag for checkpoint */
716 SBI_IS_CLOSE, /* specify unmounting */
717 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
718 SBI_POR_DOING, /* recovery is doing or not */
719};
720
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900721struct f2fs_sb_info {
722 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900723 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900724 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
725 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800726 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900727
728 /* for node-related operations */
729 struct f2fs_nm_info *nm_info; /* node manager */
730 struct inode *node_inode; /* cache node blocks */
731
732 /* for segment-related operations */
733 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900734
735 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800736 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900737 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900738
739 /* for checkpoint */
740 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
741 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900742 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800743 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800744 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim5463e7c2015-04-21 10:40:54 -0700745 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900746 wait_queue_head_t cp_wait;
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700747 long cp_expires, cp_interval; /* next expected periodic cp */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900748
Chao Yu67298802014-11-18 11:18:36 +0800749 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700750
751 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800752 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900753
754 /* for directory inode management */
755 struct list_head dir_inode_list; /* dir inode list */
756 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900757
Chao Yu13054c52015-02-05 17:52:58 +0800758 /* for extent tree cache */
759 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
760 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
761 struct list_head extent_list; /* lru list for shrinker */
762 spinlock_t extent_lock; /* locking extent lru list */
763 int total_ext_tree; /* extent tree count */
764 atomic_t total_ext_node; /* extent info count */
765
arter97e1c42042014-08-06 23:22:50 +0900766 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900767 unsigned int log_sectors_per_block; /* log2 sectors per block */
768 unsigned int log_blocksize; /* log2 block size */
769 unsigned int blocksize; /* block size */
770 unsigned int root_ino_num; /* root inode number*/
771 unsigned int node_ino_num; /* node inode number*/
772 unsigned int meta_ino_num; /* meta inode number*/
773 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
774 unsigned int blocks_per_seg; /* blocks per segment */
775 unsigned int segs_per_sec; /* segments per section */
776 unsigned int secs_per_zone; /* sections per zone */
777 unsigned int total_sections; /* total section count */
778 unsigned int total_node_count; /* total node block count */
779 unsigned int total_valid_node_count; /* valid node block count */
780 unsigned int total_valid_inode_count; /* valid inode count */
781 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900782 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900783
784 block_t user_block_count; /* # of user blocks */
785 block_t total_valid_block_count; /* # of valid blocks */
786 block_t alloc_valid_block_count; /* # of allocated blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700787 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900788 block_t last_valid_block_count; /* for recovery */
789 u32 s_next_generation; /* for NFS support */
790 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
791
792 struct f2fs_mount_info mount_opt; /* mount options */
793
794 /* for cleaning operations */
795 struct mutex gc_mutex; /* mutex for GC */
796 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900797 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900798
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900799 /* maximum # of trials to find a victim segment for SSR and GC */
800 unsigned int max_victim_search;
801
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900802 /*
803 * for stat information.
804 * one is for the LFS mode, and the other is for the SSR mode.
805 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900806#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900807 struct f2fs_stat_info *stat_info; /* FS status information */
808 unsigned int segment_count[2]; /* # of allocated segments */
809 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900810 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800811 atomic64_t total_hit_ext; /* # of lookup extent cache */
812 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
813 atomic64_t read_hit_largest; /* # of hit largest extent node */
814 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800815 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800816 atomic_t inline_inode; /* # of inline_data inodes */
817 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900818 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900819 unsigned int n_dirty_dirs; /* # of dir inodes */
820#endif
821 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900822 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900823
824 /* For sysfs suppport */
825 struct kobject s_kobj;
826 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700827
828 /* For shrinker support */
829 struct list_head s_list;
830 struct mutex umount_mutex;
831 unsigned int shrinker_run_no;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900832};
833
834/*
835 * Inline functions
836 */
837static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
838{
839 return container_of(inode, struct f2fs_inode_info, vfs_inode);
840}
841
842static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
843{
844 return sb->s_fs_info;
845}
846
Jaegeuk Kim40813632014-09-02 15:31:18 -0700847static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
848{
849 return F2FS_SB(inode->i_sb);
850}
851
852static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
853{
854 return F2FS_I_SB(mapping->host);
855}
856
857static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
858{
859 return F2FS_M_SB(page->mapping);
860}
861
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900862static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
863{
864 return (struct f2fs_super_block *)(sbi->raw_super);
865}
866
867static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
868{
869 return (struct f2fs_checkpoint *)(sbi->ckpt);
870}
871
Gu Zheng45590712013-07-15 17:57:38 +0800872static inline struct f2fs_node *F2FS_NODE(struct page *page)
873{
874 return (struct f2fs_node *)page_address(page);
875}
876
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900877static inline struct f2fs_inode *F2FS_INODE(struct page *page)
878{
879 return &((struct f2fs_node *)page_address(page))->i;
880}
881
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900882static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
883{
884 return (struct f2fs_nm_info *)(sbi->nm_info);
885}
886
887static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
888{
889 return (struct f2fs_sm_info *)(sbi->sm_info);
890}
891
892static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
893{
894 return (struct sit_info *)(SM_I(sbi)->sit_info);
895}
896
897static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
898{
899 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
900}
901
902static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
903{
904 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
905}
906
Gu Zheng9df27d92014-01-20 18:37:04 +0800907static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
908{
909 return sbi->meta_inode->i_mapping;
910}
911
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900912static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
913{
914 return sbi->node_inode->i_mapping;
915}
916
Chao Yucaf00472015-01-28 17:48:42 +0800917static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900918{
Chao Yucaf00472015-01-28 17:48:42 +0800919 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900920}
921
Chao Yucaf00472015-01-28 17:48:42 +0800922static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900923{
Chao Yucaf00472015-01-28 17:48:42 +0800924 sbi->s_flag |= (0x01 << type);
925}
926
927static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
928{
929 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900930}
931
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900932static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
933{
934 return le64_to_cpu(cp->checkpoint_ver);
935}
936
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900937static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
938{
939 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
940 return ckpt_flags & f;
941}
942
943static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
944{
945 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
946 ckpt_flags |= f;
947 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
948}
949
950static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
951{
952 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
953 ckpt_flags &= (~f);
954 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
955}
956
Gu Zhenge4795562013-09-27 18:08:30 +0800957static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900958{
Gu Zhenge4795562013-09-27 18:08:30 +0800959 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900960}
961
Gu Zhenge4795562013-09-27 18:08:30 +0800962static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900963{
Gu Zhenge4795562013-09-27 18:08:30 +0800964 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900965}
966
Gu Zhenge4795562013-09-27 18:08:30 +0800967static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900968{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900969 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900970}
971
Gu Zhenge4795562013-09-27 18:08:30 +0800972static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900973{
Gu Zhenge4795562013-09-27 18:08:30 +0800974 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900975}
976
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800977static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
978{
979 int reason = CP_SYNC;
980
981 if (test_opt(sbi, FASTBOOT))
982 reason = CP_FASTBOOT;
983 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
984 reason = CP_UMOUNT;
985 return reason;
986}
987
988static inline bool __remain_node_summaries(int reason)
989{
990 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
991}
992
993static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
994{
995 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
996 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
997}
998
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900999/*
1000 * Check whether the given nid is within node id range.
1001 */
Namjae Jeon064e0822013-03-17 17:27:20 +09001002static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001003{
Chao Yud6b7d4b2014-06-12 13:23:41 +08001004 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1005 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +08001006 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001007 return -EINVAL;
1008 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001009}
1010
1011#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1012
1013/*
1014 * Check whether the inode has blocks or not
1015 */
1016static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1017{
1018 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001019 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001020 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001021 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001022}
1023
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001024static inline bool f2fs_has_xattr_block(unsigned int ofs)
1025{
1026 return ofs == XATTR_NODE_OFFSET;
1027}
1028
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001029static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
1030 struct inode *inode, blkcnt_t count)
1031{
1032 block_t valid_block_count;
1033
1034 spin_lock(&sbi->stat_lock);
1035 valid_block_count =
1036 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +08001037 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001038 spin_unlock(&sbi->stat_lock);
1039 return false;
1040 }
1041 inode->i_blocks += count;
1042 sbi->total_valid_block_count = valid_block_count;
1043 sbi->alloc_valid_block_count += (block_t)count;
1044 spin_unlock(&sbi->stat_lock);
1045 return true;
1046}
1047
Gu Zhengda19b0d2013-11-19 18:03:27 +08001048static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001049 struct inode *inode,
1050 blkcnt_t count)
1051{
1052 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001053 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1054 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001055 inode->i_blocks -= count;
1056 sbi->total_valid_block_count -= (block_t)count;
1057 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001058}
1059
1060static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1061{
1062 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001063 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001064}
1065
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001066static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001067{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001068 atomic_inc(&F2FS_I(inode)->dirty_pages);
1069 if (S_ISDIR(inode->i_mode))
1070 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001071}
1072
1073static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1074{
1075 atomic_dec(&sbi->nr_pages[count_type]);
1076}
1077
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001078static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001079{
Chao Yu5ac9f362015-06-29 18:14:10 +08001080 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1081 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001082 return;
1083
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001084 atomic_dec(&F2FS_I(inode)->dirty_pages);
1085
1086 if (S_ISDIR(inode->i_mode))
1087 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001088}
1089
1090static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
1091{
1092 return atomic_read(&sbi->nr_pages[count_type]);
1093}
1094
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001095static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001096{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001097 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001098}
1099
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001100static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1101{
1102 unsigned int pages_per_sec = sbi->segs_per_sec *
1103 (1 << sbi->log_blocks_per_seg);
1104 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
1105 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
1106}
1107
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001108static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1109{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001110 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001111}
1112
1113static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1114{
1115 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1116
1117 /* return NAT or SIT bitmap */
1118 if (flag == NAT_BITMAP)
1119 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1120 else if (flag == SIT_BITMAP)
1121 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1122
1123 return 0;
1124}
1125
Wanpeng Li55141482015-02-26 07:57:20 +08001126static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1127{
1128 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1129}
1130
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001131static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1132{
1133 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001134 int offset;
1135
Wanpeng Li55141482015-02-26 07:57:20 +08001136 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001137 if (flag == NAT_BITMAP)
1138 return &ckpt->sit_nat_version_bitmap;
1139 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001140 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001141 } else {
1142 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001143 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001144 return &ckpt->sit_nat_version_bitmap + offset;
1145 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001146}
1147
1148static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1149{
1150 block_t start_addr;
1151 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001152 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001153
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001154 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001155
1156 /*
1157 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001158 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001159 */
1160 if (!(ckpt_version & 1))
1161 start_addr += sbi->blocks_per_seg;
1162
1163 return start_addr;
1164}
1165
1166static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1167{
1168 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1169}
1170
1171static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001172 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001173{
1174 block_t valid_block_count;
1175 unsigned int valid_node_count;
1176
1177 spin_lock(&sbi->stat_lock);
1178
Gu Zhengef86d702013-11-19 18:03:38 +08001179 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001180 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001181 spin_unlock(&sbi->stat_lock);
1182 return false;
1183 }
1184
Gu Zhengef86d702013-11-19 18:03:38 +08001185 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001186 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001187 spin_unlock(&sbi->stat_lock);
1188 return false;
1189 }
1190
1191 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001192 inode->i_blocks++;
1193
1194 sbi->alloc_valid_block_count++;
1195 sbi->total_valid_node_count++;
1196 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001197 spin_unlock(&sbi->stat_lock);
1198
1199 return true;
1200}
1201
1202static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001203 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001204{
1205 spin_lock(&sbi->stat_lock);
1206
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001207 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1208 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1209 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001210
Gu Zhengef86d702013-11-19 18:03:38 +08001211 inode->i_blocks--;
1212 sbi->total_valid_node_count--;
1213 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001214
1215 spin_unlock(&sbi->stat_lock);
1216}
1217
1218static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1219{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001220 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001221}
1222
1223static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1224{
1225 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001226 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001227 sbi->total_valid_inode_count++;
1228 spin_unlock(&sbi->stat_lock);
1229}
1230
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001231static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001232{
1233 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001234 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001235 sbi->total_valid_inode_count--;
1236 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001237}
1238
1239static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1240{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001241 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001242}
1243
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001244static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1245 pgoff_t index, bool for_write)
1246{
1247 if (!for_write)
1248 return grab_cache_page(mapping, index);
1249 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1250}
1251
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001252static inline void f2fs_copy_page(struct page *src, struct page *dst)
1253{
1254 char *src_kaddr = kmap(src);
1255 char *dst_kaddr = kmap(dst);
1256
1257 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1258 kunmap(dst);
1259 kunmap(src);
1260}
1261
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001262static inline void f2fs_put_page(struct page *page, int unlock)
1263{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001264 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001265 return;
1266
1267 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001268 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001269 unlock_page(page);
1270 }
1271 page_cache_release(page);
1272}
1273
1274static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1275{
1276 if (dn->node_page)
1277 f2fs_put_page(dn->node_page, 1);
1278 if (dn->inode_page && dn->node_page != dn->inode_page)
1279 f2fs_put_page(dn->inode_page, 0);
1280 dn->node_page = NULL;
1281 dn->inode_page = NULL;
1282}
1283
1284static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001285 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001286{
Gu Zhenge8512d22014-03-07 18:43:28 +08001287 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001288}
1289
Gu Zheng7bd59382013-10-22 14:52:26 +08001290static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1291 gfp_t flags)
1292{
1293 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001294
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001295 entry = kmem_cache_alloc(cachep, flags);
1296 if (!entry)
1297 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001298 return entry;
1299}
1300
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001301static inline struct bio *f2fs_bio_alloc(int npages)
1302{
1303 struct bio *bio;
1304
1305 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001306 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001307 if (!bio)
1308 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001309 return bio;
1310}
1311
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001312static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1313 unsigned long index, void *item)
1314{
1315 while (radix_tree_insert(root, index, item))
1316 cond_resched();
1317}
1318
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001319#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1320
1321static inline bool IS_INODE(struct page *page)
1322{
Gu Zheng45590712013-07-15 17:57:38 +08001323 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001324 return RAW_IS_INODE(p);
1325}
1326
1327static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1328{
1329 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1330}
1331
1332static inline block_t datablock_addr(struct page *node_page,
1333 unsigned int offset)
1334{
1335 struct f2fs_node *raw_node;
1336 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001337 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001338 addr_array = blkaddr_in_node(raw_node);
1339 return le32_to_cpu(addr_array[offset]);
1340}
1341
1342static inline int f2fs_test_bit(unsigned int nr, char *addr)
1343{
1344 int mask;
1345
1346 addr += (nr >> 3);
1347 mask = 1 << (7 - (nr & 0x07));
1348 return mask & *addr;
1349}
1350
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001351static inline void f2fs_set_bit(unsigned int nr, char *addr)
1352{
1353 int mask;
1354
1355 addr += (nr >> 3);
1356 mask = 1 << (7 - (nr & 0x07));
1357 *addr |= mask;
1358}
1359
1360static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1361{
1362 int mask;
1363
1364 addr += (nr >> 3);
1365 mask = 1 << (7 - (nr & 0x07));
1366 *addr &= ~mask;
1367}
1368
Gu Zheng52aca072014-10-20 17:45:51 +08001369static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001370{
1371 int mask;
1372 int ret;
1373
1374 addr += (nr >> 3);
1375 mask = 1 << (7 - (nr & 0x07));
1376 ret = mask & *addr;
1377 *addr |= mask;
1378 return ret;
1379}
1380
Gu Zheng52aca072014-10-20 17:45:51 +08001381static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001382{
1383 int mask;
1384 int ret;
1385
1386 addr += (nr >> 3);
1387 mask = 1 << (7 - (nr & 0x07));
1388 ret = mask & *addr;
1389 *addr &= ~mask;
1390 return ret;
1391}
1392
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001393static inline void f2fs_change_bit(unsigned int nr, char *addr)
1394{
1395 int mask;
1396
1397 addr += (nr >> 3);
1398 mask = 1 << (7 - (nr & 0x07));
1399 *addr ^= mask;
1400}
1401
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001402/* used for f2fs_inode_info->flags */
1403enum {
1404 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001405 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001406 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001407 FI_INC_LINK, /* need to increment i_nlink */
1408 FI_ACL_MODE, /* indicate acl mode */
1409 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001410 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001411 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001412 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001413 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001414 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001415 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001416 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001417 FI_APPEND_WRITE, /* inode has appended data */
1418 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001419 FI_NEED_IPU, /* used for ipu per file */
1420 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001421 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001422 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001423 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001424 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001425 FI_INLINE_DOTS, /* indicate inline dot dentries */
Chao Yud323d002015-10-27 09:53:45 +08001426 FI_DO_DEFRAG, /* indicate defragment is running */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001427};
1428
1429static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1430{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001431 if (!test_bit(flag, &fi->flags))
1432 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001433}
1434
1435static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1436{
1437 return test_bit(flag, &fi->flags);
1438}
1439
1440static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1441{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001442 if (test_bit(flag, &fi->flags))
1443 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001444}
1445
1446static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1447{
1448 fi->i_acl_mode = mode;
1449 set_inode_flag(fi, FI_ACL_MODE);
1450}
1451
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001452static inline void get_inline_info(struct f2fs_inode_info *fi,
1453 struct f2fs_inode *ri)
1454{
1455 if (ri->i_inline & F2FS_INLINE_XATTR)
1456 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001457 if (ri->i_inline & F2FS_INLINE_DATA)
1458 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001459 if (ri->i_inline & F2FS_INLINE_DENTRY)
1460 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001461 if (ri->i_inline & F2FS_DATA_EXIST)
1462 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001463 if (ri->i_inline & F2FS_INLINE_DOTS)
1464 set_inode_flag(fi, FI_INLINE_DOTS);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001465}
1466
1467static inline void set_raw_inline(struct f2fs_inode_info *fi,
1468 struct f2fs_inode *ri)
1469{
1470 ri->i_inline = 0;
1471
1472 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1473 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001474 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1475 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001476 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1477 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001478 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1479 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001480 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1481 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001482}
1483
Chao Yu987c7c32014-03-12 15:59:03 +08001484static inline int f2fs_has_inline_xattr(struct inode *inode)
1485{
1486 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1487}
1488
Jaegeuk Kimde936532013-08-12 21:08:03 +09001489static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1490{
Chao Yu987c7c32014-03-12 15:59:03 +08001491 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001492 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1493 return DEF_ADDRS_PER_INODE;
1494}
1495
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001496static inline void *inline_xattr_addr(struct page *page)
1497{
Chao Yu695fd1e2014-02-27 19:52:21 +08001498 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001499 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1500 F2FS_INLINE_XATTR_ADDRS]);
1501}
1502
1503static inline int inline_xattr_size(struct inode *inode)
1504{
Chao Yu987c7c32014-03-12 15:59:03 +08001505 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001506 return F2FS_INLINE_XATTR_ADDRS << 2;
1507 else
1508 return 0;
1509}
1510
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001511static inline int f2fs_has_inline_data(struct inode *inode)
1512{
1513 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1514}
1515
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001516static inline void f2fs_clear_inline_inode(struct inode *inode)
1517{
1518 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1519 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1520}
1521
1522static inline int f2fs_exist_data(struct inode *inode)
1523{
1524 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1525}
1526
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001527static inline int f2fs_has_inline_dots(struct inode *inode)
1528{
1529 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1530}
1531
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001532static inline bool f2fs_is_atomic_file(struct inode *inode)
1533{
1534 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1535}
1536
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001537static inline bool f2fs_is_volatile_file(struct inode *inode)
1538{
1539 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1540}
1541
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001542static inline bool f2fs_is_first_block_written(struct inode *inode)
1543{
1544 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1545}
1546
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001547static inline bool f2fs_is_drop_cache(struct inode *inode)
1548{
1549 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1550}
1551
Huajun Li1001b342013-11-10 23:13:16 +08001552static inline void *inline_data_addr(struct page *page)
1553{
Chao Yu695fd1e2014-02-27 19:52:21 +08001554 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001555 return (void *)&(ri->i_addr[1]);
1556}
1557
Chao Yu34d67de2014-09-24 18:15:19 +08001558static inline int f2fs_has_inline_dentry(struct inode *inode)
1559{
1560 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1561}
1562
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001563static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1564{
1565 if (!f2fs_has_inline_dentry(dir))
1566 kunmap(page);
1567}
1568
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001569static inline int is_file(struct inode *inode, int type)
1570{
1571 return F2FS_I(inode)->i_advise & type;
1572}
1573
1574static inline void set_file(struct inode *inode, int type)
1575{
1576 F2FS_I(inode)->i_advise |= type;
1577}
1578
1579static inline void clear_file(struct inode *inode, int type)
1580{
1581 F2FS_I(inode)->i_advise &= ~type;
1582}
1583
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001584static inline int f2fs_readonly(struct super_block *sb)
1585{
1586 return sb->s_flags & MS_RDONLY;
1587}
1588
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001589static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1590{
1591 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1592}
1593
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001594static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1595{
1596 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1597 sbi->sb->s_flags |= MS_RDONLY;
1598}
1599
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001600static inline bool is_dot_dotdot(const struct qstr *str)
1601{
1602 if (str->len == 1 && str->name[0] == '.')
1603 return true;
1604
1605 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1606 return true;
1607
1608 return false;
1609}
1610
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001611static inline bool f2fs_may_extent_tree(struct inode *inode)
1612{
1613 mode_t mode = inode->i_mode;
1614
1615 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1616 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1617 return false;
1618
1619 return S_ISREG(mode);
1620}
1621
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001622static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1623{
1624 void *ret;
1625
1626 ret = kmalloc(size, flags | __GFP_NOWARN);
1627 if (!ret)
1628 ret = __vmalloc(size, flags, PAGE_KERNEL);
1629 return ret;
1630}
1631
1632static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1633{
1634 void *ret;
1635
1636 ret = kzalloc(size, flags | __GFP_NOWARN);
1637 if (!ret)
1638 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1639 return ret;
1640}
1641
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001642#define get_inode_mode(i) \
1643 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1644 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1645
Chao Yu267378d2014-04-23 14:10:24 +08001646/* get offset of first page in next direct node */
1647#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1648 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1649 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1650 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1651
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001652/*
1653 * file.c
1654 */
1655int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1656void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001657int truncate_blocks(struct inode *, u64, bool);
Chao Yub0154892015-08-24 17:39:42 +08001658int f2fs_truncate(struct inode *, bool);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001659int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001660int f2fs_setattr(struct dentry *, struct iattr *);
1661int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001662int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001663long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001664long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001665
1666/*
1667 * inode.c
1668 */
1669void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001670struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001671int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001672void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001673void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001674int f2fs_write_inode(struct inode *, struct writeback_control *);
1675void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001676void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001677
1678/*
1679 * namei.c
1680 */
1681struct dentry *f2fs_get_parent(struct dentry *child);
1682
1683/*
1684 * dir.c
1685 */
Chao Yudbeacf02014-09-24 18:17:04 +08001686extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001687void set_de_type(struct f2fs_dir_entry *, umode_t);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001688
1689struct f2fs_dir_entry *find_target_dentry(struct f2fs_filename *,
1690 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001691bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07001692 unsigned int, struct f2fs_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001693void do_make_empty_dir(struct inode *, struct inode *,
1694 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001695struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001696 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001697void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001698int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001699void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001700struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1701 struct page **);
1702struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1703ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1704void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1705 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001706int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001707void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001708 const struct qstr *, f2fs_hash_t , unsigned int);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001709int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1710 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001711void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1712 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001713int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001714bool f2fs_empty_dir(struct inode *);
1715
Al Virob7f7a5e2013-01-25 16:15:43 -05001716static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1717{
David Howells2b0143b2015-03-17 22:25:59 +00001718 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001719 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001720}
1721
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001722/*
1723 * super.c
1724 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001725int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001726int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001727extern __printf(3, 4)
1728void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001729
1730/*
1731 * hash.c
1732 */
Gu Zhengeee61602014-06-24 18:21:23 +08001733f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001734
1735/*
1736 * node.c
1737 */
1738struct dnode_of_data;
1739struct node_info;
1740
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001741bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001742int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001743bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001744bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001745void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1746int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1747int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001748int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001749int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001750int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001751struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001752struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001753void ra_node_page(struct f2fs_sb_info *, nid_t);
1754struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1755struct page *get_node_page_ra(struct page *, int);
1756void sync_inode_page(struct dnode_of_data *);
1757int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1758bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1759void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1760void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001761int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001762void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001763void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001764int recover_inode_page(struct f2fs_sb_info *, struct page *);
1765int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1766 struct f2fs_summary_block *);
1767void flush_nat_entries(struct f2fs_sb_info *);
1768int build_node_manager(struct f2fs_sb_info *);
1769void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001770int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001771void destroy_node_manager_caches(void);
1772
1773/*
1774 * segment.c
1775 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001776void register_inmem_page(struct inode *, struct page *);
Jaegeuk Kimedb27de2015-07-25 00:52:52 -07001777int commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001778void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001779void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001780int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001781int create_flush_cmd_control(struct f2fs_sb_info *);
1782void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001783void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001784bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001785void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001786void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001787void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001788bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001789int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001790void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001791int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001792struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001793void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001794void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001795void write_node_page(unsigned int, struct f2fs_io_info *);
1796void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1797void rewrite_data_page(struct f2fs_io_info *);
Chao Yu528e3452015-05-28 19:15:35 +08001798void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
1799 block_t, block_t, unsigned char, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001800void allocate_data_block(struct f2fs_sb_info *, struct page *,
1801 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001802void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Chao Yu08b39fb2015-10-08 13:27:34 +08001803void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001804void write_data_summaries(struct f2fs_sb_info *, block_t);
1805void write_node_summaries(struct f2fs_sb_info *, block_t);
1806int lookup_journal_in_cursum(struct f2fs_summary_block *,
1807 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001808void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001809int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001810void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001811int __init create_segment_manager_caches(void);
1812void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001813
1814/*
1815 * checkpoint.c
1816 */
1817struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1818struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08001819struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08001820bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08001821int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08001822void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001823long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001824void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1825void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001826void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001827bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001828int acquire_orphan_inode(struct f2fs_sb_info *);
1829void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001830void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1831void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08001832int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001833int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001834void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001835void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001836void remove_dirty_dir_inode(struct inode *);
1837void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001838void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001839void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001840int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001841void destroy_checkpoint_caches(void);
1842
1843/*
1844 * data.c
1845 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001846void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001847int f2fs_submit_page_bio(struct f2fs_io_info *);
1848void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08001849void set_data_blkaddr(struct dnode_of_data *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001850int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08001851int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Huajun Lib6009652013-11-10 23:13:18 +08001852int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001853struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07001854struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001855struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001856struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001857int do_write_data_page(struct f2fs_io_info *);
Chao Yud323d002015-10-27 09:53:45 +08001858int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001859int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08001860void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1861int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001862
1863/*
1864 * gc.c
1865 */
1866int start_gc_thread(struct f2fs_sb_info *);
1867void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001868block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Chao Yud530d4d2015-10-05 22:22:44 +08001869int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001870void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001871
1872/*
1873 * recovery.c
1874 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001875int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001876bool space_for_roll_forward(struct f2fs_sb_info *);
1877
1878/*
1879 * debug.c
1880 */
1881#ifdef CONFIG_F2FS_STAT_FS
1882struct f2fs_stat_info {
1883 struct list_head stat_list;
1884 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001885 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1886 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08001887 unsigned long long hit_largest, hit_cached, hit_rbtree;
1888 unsigned long long hit_total, total_ext;
Chao Yu029e13c2015-08-19 19:13:25 +08001889 int ext_tree, ext_node;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001890 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001891 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001892 int total_count, utilization;
Chao Yud5e8f6c2015-07-15 17:28:53 +08001893 int bg_gc, inmem_pages, wb_pages;
1894 int inline_xattr, inline_inode, inline_dir;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001895 unsigned int valid_count, valid_node_count, valid_inode_count;
1896 unsigned int bimodal, avg_vblocks;
1897 int util_free, util_valid, util_invalid;
1898 int rsvd_segs, overp_segs;
1899 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001900 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001901 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09001902 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001903 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09001904 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001905 int curseg[NR_CURSEG_TYPE];
1906 int cursec[NR_CURSEG_TYPE];
1907 int curzone[NR_CURSEG_TYPE];
1908
1909 unsigned int segment_count[2];
1910 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001911 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08001912 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001913};
1914
Gu Zheng963d4f72013-07-12 14:47:11 +08001915static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1916{
Chris Fries6c311ec2014-01-17 14:44:39 -06001917 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001918}
1919
Changman Lee942e0be2014-02-13 15:12:29 +09001920#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001921#define stat_inc_call_count(si) ((si)->call_count++)
1922#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1923#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1924#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
Chao Yu5b7ee372015-09-30 17:38:48 +08001925#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
1926#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
1927#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
1928#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08001929#define stat_inc_inline_xattr(inode) \
1930 do { \
1931 if (f2fs_has_inline_xattr(inode)) \
1932 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
1933 } while (0)
1934#define stat_dec_inline_xattr(inode) \
1935 do { \
1936 if (f2fs_has_inline_xattr(inode)) \
1937 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
1938 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001939#define stat_inc_inline_inode(inode) \
1940 do { \
1941 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001942 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001943 } while (0)
1944#define stat_dec_inline_inode(inode) \
1945 do { \
1946 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001947 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001948 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001949#define stat_inc_inline_dir(inode) \
1950 do { \
1951 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001952 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001953 } while (0)
1954#define stat_dec_inline_dir(inode) \
1955 do { \
1956 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001957 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001958 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001959#define stat_inc_seg_type(sbi, curseg) \
1960 ((sbi)->segment_count[(curseg)->alloc_type]++)
1961#define stat_inc_block_count(sbi, curseg) \
1962 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001963#define stat_inc_inplace_blocks(sbi) \
1964 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09001965#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001966 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001967 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001968 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001969 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001970 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001971 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
1972 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001973 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09001974 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
1975 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001976 } while (0)
1977
1978#define stat_inc_tot_blk_count(si, blks) \
1979 (si->tot_blks += (blks))
1980
Changman Leee1235982014-12-23 08:37:39 +09001981#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001982 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001983 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001984 stat_inc_tot_blk_count(si, blks); \
1985 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001986 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001987 } while (0)
1988
Changman Leee1235982014-12-23 08:37:39 +09001989#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001990 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001991 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001992 stat_inc_tot_blk_count(si, blks); \
1993 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09001994 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001995 } while (0)
1996
1997int f2fs_build_stats(struct f2fs_sb_info *);
1998void f2fs_destroy_stats(struct f2fs_sb_info *);
Chao Yu787c7b8c2015-10-29 09:13:04 +08001999int __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09002000void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002001#else
Changman Lee942e0be2014-02-13 15:12:29 +09002002#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002003#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002004#define stat_inc_bggc_count(si)
2005#define stat_inc_dirty_dir(sbi)
2006#define stat_dec_dirty_dir(sbi)
2007#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08002008#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002009#define stat_inc_largest_node_hit(sbi)
2010#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002011#define stat_inc_inline_xattr(inode)
2012#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002013#define stat_inc_inline_inode(inode)
2014#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002015#define stat_inc_inline_dir(inode)
2016#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002017#define stat_inc_seg_type(sbi, curseg)
2018#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002019#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002020#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002021#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002022#define stat_inc_data_blk_count(sbi, blks, gc_type)
2023#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002024
2025static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2026static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Chao Yu787c7b8c2015-10-29 09:13:04 +08002027static inline int __init f2fs_create_root_stats(void) { return 0; }
Namjae Jeon4589d252013-01-15 19:58:47 +09002028static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002029#endif
2030
2031extern const struct file_operations f2fs_dir_operations;
2032extern const struct file_operations f2fs_file_operations;
2033extern const struct inode_operations f2fs_file_inode_operations;
2034extern const struct address_space_operations f2fs_dblock_aops;
2035extern const struct address_space_operations f2fs_node_aops;
2036extern const struct address_space_operations f2fs_meta_aops;
2037extern const struct inode_operations f2fs_dir_inode_operations;
2038extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002039extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002040extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002041extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002042
Huajun Lie18c65b2013-11-10 23:13:19 +08002043/*
2044 * inline.c
2045 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002046bool f2fs_may_inline_data(struct inode *);
2047bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002048void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002049bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002050int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002051int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2052int f2fs_convert_inline_inode(struct inode *);
2053int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002054bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002055struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
2056 struct f2fs_filename *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002057struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2058int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002059int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2060 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002061void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2062 struct inode *, struct inode *);
2063bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002064int f2fs_read_inline_dir(struct file *, struct dir_context *,
2065 struct f2fs_str *);
Jaegeuk Kim67f8cf3c2015-10-15 11:34:49 -07002066int f2fs_inline_data_fiemap(struct inode *,
2067 struct fiemap_extent_info *, __u64, __u64);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002068
2069/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002070 * shrinker.c
2071 */
2072unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2073unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2074void f2fs_join_shrinker(struct f2fs_sb_info *);
2075void f2fs_leave_shrinker(struct f2fs_sb_info *);
2076
2077/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002078 * extent_cache.c
2079 */
2080unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
2081void f2fs_drop_largest_extent(struct inode *, pgoff_t);
2082void f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
2083unsigned int f2fs_destroy_extent_node(struct inode *);
2084void f2fs_destroy_extent_tree(struct inode *);
2085bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2086void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002087void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2088 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002089void init_extent_cache_info(struct f2fs_sb_info *);
2090int __init create_extent_cache(void);
2091void destroy_extent_cache(void);
2092
2093/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002094 * crypto support
2095 */
2096static inline int f2fs_encrypted_inode(struct inode *inode)
2097{
2098#ifdef CONFIG_F2FS_FS_ENCRYPTION
2099 return file_is_encrypt(inode);
2100#else
2101 return 0;
2102#endif
2103}
2104
2105static inline void f2fs_set_encrypted_inode(struct inode *inode)
2106{
2107#ifdef CONFIG_F2FS_FS_ENCRYPTION
2108 file_set_encrypt(inode);
2109#endif
2110}
2111
2112static inline bool f2fs_bio_encrypted(struct bio *bio)
2113{
2114#ifdef CONFIG_F2FS_FS_ENCRYPTION
2115 return unlikely(bio->bi_private != NULL);
2116#else
2117 return false;
2118#endif
2119}
2120
2121static inline int f2fs_sb_has_crypto(struct super_block *sb)
2122{
2123#ifdef CONFIG_F2FS_FS_ENCRYPTION
2124 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
2125#else
2126 return 0;
2127#endif
2128}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002129
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002130static inline bool f2fs_may_encrypt(struct inode *inode)
2131{
2132#ifdef CONFIG_F2FS_FS_ENCRYPTION
2133 mode_t mode = inode->i_mode;
2134
2135 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2136#else
2137 return 0;
2138#endif
2139}
2140
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002141/* crypto_policy.c */
2142int f2fs_is_child_context_consistent_with_parent(struct inode *,
2143 struct inode *);
2144int f2fs_inherit_context(struct inode *, struct inode *, struct page *);
2145int f2fs_process_policy(const struct f2fs_encryption_policy *, struct inode *);
2146int f2fs_get_policy(struct inode *, struct f2fs_encryption_policy *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002147
2148/* crypt.c */
Jaegeuk Kim8bacf6de2015-05-12 13:26:54 -07002149extern struct kmem_cache *f2fs_crypt_info_cachep;
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002150bool f2fs_valid_contents_enc_mode(uint32_t);
2151uint32_t f2fs_validate_encryption_key_size(uint32_t, uint32_t);
2152struct f2fs_crypto_ctx *f2fs_get_crypto_ctx(struct inode *);
2153void f2fs_release_crypto_ctx(struct f2fs_crypto_ctx *);
2154struct page *f2fs_encrypt(struct inode *, struct page *);
2155int f2fs_decrypt(struct f2fs_crypto_ctx *, struct page *);
2156int f2fs_decrypt_one(struct inode *, struct page *);
2157void f2fs_end_io_crypto_work(struct f2fs_crypto_ctx *, struct bio *);
2158
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002159/* crypto_key.c */
Jaegeuk Kim26bf3dc2015-05-19 22:26:54 -07002160void f2fs_free_encryption_info(struct inode *, struct f2fs_crypt_info *);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002161int _f2fs_get_encryption_info(struct inode *inode);
2162
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002163/* crypto_fname.c */
2164bool f2fs_valid_filenames_enc_mode(uint32_t);
2165u32 f2fs_fname_crypto_round_up(u32, u32);
2166int f2fs_fname_crypto_alloc_buffer(struct inode *, u32, struct f2fs_str *);
2167int f2fs_fname_disk_to_usr(struct inode *, f2fs_hash_t *,
2168 const struct f2fs_str *, struct f2fs_str *);
2169int f2fs_fname_usr_to_disk(struct inode *, const struct qstr *,
2170 struct f2fs_str *);
2171
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002172#ifdef CONFIG_F2FS_FS_ENCRYPTION
2173void f2fs_restore_and_release_control_page(struct page **);
2174void f2fs_restore_control_page(struct page *);
2175
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002176int __init f2fs_init_crypto(void);
2177int f2fs_crypto_initialize(void);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002178void f2fs_exit_crypto(void);
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002179
2180int f2fs_has_encryption_key(struct inode *);
2181
2182static inline int f2fs_get_encryption_info(struct inode *inode)
2183{
2184 struct f2fs_crypt_info *ci = F2FS_I(inode)->i_crypt_info;
2185
2186 if (!ci ||
2187 (ci->ci_keyring_key &&
2188 (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
2189 (1 << KEY_FLAG_REVOKED) |
2190 (1 << KEY_FLAG_DEAD)))))
2191 return _f2fs_get_encryption_info(inode);
2192 return 0;
2193}
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002194
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002195void f2fs_fname_crypto_free_buffer(struct f2fs_str *);
2196int f2fs_fname_setup_filename(struct inode *, const struct qstr *,
2197 int lookup, struct f2fs_filename *);
2198void f2fs_fname_free_filename(struct f2fs_filename *);
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002199#else
2200static inline void f2fs_restore_and_release_control_page(struct page **p) { }
2201static inline void f2fs_restore_control_page(struct page *p) { }
2202
Jaegeuk Kimcfc4d972015-05-15 15:37:24 -07002203static inline int __init f2fs_init_crypto(void) { return 0; }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002204static inline void f2fs_exit_crypto(void) { }
Jaegeuk Kim0adda902015-04-21 16:23:47 -07002205
2206static inline int f2fs_has_encryption_key(struct inode *i) { return 0; }
2207static inline int f2fs_get_encryption_info(struct inode *i) { return 0; }
Jaegeuk Kim6b3bd082015-04-26 00:12:50 -07002208static inline void f2fs_fname_crypto_free_buffer(struct f2fs_str *p) { }
2209
2210static inline int f2fs_fname_setup_filename(struct inode *dir,
2211 const struct qstr *iname,
2212 int lookup, struct f2fs_filename *fname)
2213{
2214 memset(fname, 0, sizeof(struct f2fs_filename));
2215 fname->usr_fname = iname;
2216 fname->disk_name.name = (unsigned char *)iname->name;
2217 fname->disk_name.len = iname->len;
2218 return 0;
2219}
2220
2221static inline void f2fs_fname_free_filename(struct f2fs_filename *fname) { }
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002222#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002223#endif