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Jaegeuk Kim0a8165d2012-11-29 13:28:09 +09001/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _LINUX_F2FS_H
12#define _LINUX_F2FS_H
13
14#include <linux/types.h>
15#include <linux/page-flags.h>
16#include <linux/buffer_head.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090017#include <linux/slab.h>
18#include <linux/crc32.h>
19#include <linux/magic.h>
Jaegeuk Kimc2d715d2013-08-08 15:56:49 +090020#include <linux/kobject.h>
Gu Zheng7bd59382013-10-22 14:52:26 +080021#include <linux/sched.h>
Jaegeuk Kim39307a82015-09-22 13:50:47 -070022#include <linux/vmalloc.h>
Jaegeuk Kim740432f2015-08-14 11:43:56 -070023#include <linux/bio.h>
Jaegeuk Kimd0239e12016-01-08 16:57:48 -080024#include <linux/blkdev.h>
Jaegeuk Kim0b81d072015-05-15 16:26:10 -070025#include <linux/fscrypto.h>
Keith Mok43b65732016-03-02 12:04:24 -080026#include <crypto/hash.h>
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090027
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090028#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070029#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090030#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070031#define f2fs_bug_on(sbi, condition) \
32 do { \
33 if (unlikely(condition)) { \
34 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080035 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070036 } \
37 } while (0)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090038#endif
39
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070040#ifdef CONFIG_F2FS_FAULT_INJECTION
41enum {
42 FAULT_KMALLOC,
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -070043 FAULT_PAGE_ALLOC,
Jaegeuk Kimcb789422016-04-29 16:29:22 -070044 FAULT_ALLOC_NID,
45 FAULT_ORPHAN,
46 FAULT_BLOCK,
47 FAULT_DIR_DEPTH,
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070048 FAULT_MAX,
49};
50
Sheng Yong08796892016-05-16 12:38:50 +080051struct f2fs_fault_info {
52 atomic_t inject_ops;
53 unsigned int inject_rate;
54 unsigned int inject_type;
55};
56
57extern struct f2fs_fault_info f2fs_fault;
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070058extern char *fault_name[FAULT_MAX];
Sheng Yong08796892016-05-16 12:38:50 +080059#define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type)))
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070060
61static inline bool time_to_inject(int type)
62{
Sheng Yong08796892016-05-16 12:38:50 +080063 if (!f2fs_fault.inject_rate)
64 return false;
65 if (type == FAULT_KMALLOC && !IS_FAULT_SET(type))
66 return false;
67 else if (type == FAULT_PAGE_ALLOC && !IS_FAULT_SET(type))
68 return false;
69 else if (type == FAULT_ALLOC_NID && !IS_FAULT_SET(type))
70 return false;
71 else if (type == FAULT_ORPHAN && !IS_FAULT_SET(type))
72 return false;
73 else if (type == FAULT_BLOCK && !IS_FAULT_SET(type))
74 return false;
75 else if (type == FAULT_DIR_DEPTH && !IS_FAULT_SET(type))
76 return false;
77
78 atomic_inc(&f2fs_fault.inject_ops);
79 if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) {
80 atomic_set(&f2fs_fault.inject_ops, 0);
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070081 printk("%sF2FS-fs : inject %s in %pF\n",
82 KERN_INFO,
83 fault_name[type],
84 __builtin_return_address(0));
85 return true;
86 }
87 return false;
88}
89#endif
90
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090091/*
92 * For mount options
93 */
94#define F2FS_MOUNT_BG_GC 0x00000001
95#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
96#define F2FS_MOUNT_DISCARD 0x00000004
97#define F2FS_MOUNT_NOHEAP 0x00000008
98#define F2FS_MOUNT_XATTR_USER 0x00000010
99#define F2FS_MOUNT_POSIX_ACL 0x00000020
100#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +0900101#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +0800102#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +0800103#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
104#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
105#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -0700106#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +0800107#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim6aefd932015-10-05 11:02:54 -0700108#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
Chao Yu343f40f2015-12-16 13:12:16 +0800109#define F2FS_MOUNT_DATA_FLUSH 0x00008000
Jaegeuk Kim73faec42016-04-29 15:34:32 -0700110#define F2FS_MOUNT_FAULT_INJECTION 0x00010000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900111
112#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
113#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
114#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
115
116#define ver_after(a, b) (typecheck(unsigned long long, a) && \
117 typecheck(unsigned long long, b) && \
118 ((long long)((a) - (b)) > 0))
119
Jaegeuk Kima9841c42013-05-24 12:41:04 +0900120typedef u32 block_t; /*
121 * should not change u32, since it is the on-disk block
122 * address format, __le32.
123 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900124typedef u32 nid_t;
125
126struct f2fs_mount_info {
127 unsigned int opt;
128};
129
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700130#define F2FS_FEATURE_ENCRYPT 0x0001
131
Jaegeuk Kim76f105a2015-04-13 15:10:36 -0700132#define F2FS_HAS_FEATURE(sb, mask) \
133 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
134#define F2FS_SET_FEATURE(sb, mask) \
135 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
136#define F2FS_CLEAR_FEATURE(sb, mask) \
137 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
138
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900139/*
140 * For checkpoint manager
141 */
142enum {
143 NAT_BITMAP,
144 SIT_BITMAP
145};
146
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700147enum {
148 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800149 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700150 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700151 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700152 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700153};
154
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800155#define DEF_BATCHED_TRIM_SECTIONS 32
156#define BATCHED_TRIM_SEGMENTS(sbi) \
157 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700158#define BATCHED_TRIM_BLOCKS(sbi) \
159 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700160#define DEF_CP_INTERVAL 60 /* 60 secs */
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800161#define DEF_IDLE_INTERVAL 120 /* 2 mins */
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800162
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700163struct cp_control {
164 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700165 __u64 trim_start;
166 __u64 trim_end;
167 __u64 trim_minlen;
168 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700169};
170
Chao Yu662befd2014-02-07 16:11:53 +0800171/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800172 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800173 */
174enum {
175 META_CP,
176 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800177 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700178 META_SSA,
179 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800180};
181
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700182/* for the list of ino */
183enum {
184 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700185 APPEND_INO, /* for append ino list */
186 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700187 MAX_INO_ENTRY, /* max. list */
188};
189
190struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900191 struct list_head list; /* list head */
192 nid_t ino; /* inode number */
193};
194
Chao Yu2710fd72015-12-15 13:30:45 +0800195/* for the list of inodes to be GCed */
Chao Yu06292072014-12-29 15:56:18 +0800196struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900197 struct list_head list; /* list head */
198 struct inode *inode; /* vfs inode pointer */
199};
200
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900201/* for the list of blockaddresses to be discarded */
202struct discard_entry {
203 struct list_head list; /* list head */
204 block_t blkaddr; /* block address to be discarded */
205 int len; /* # of consecutive blocks of the discard */
206};
207
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900208/* for the list of fsync inodes, used only during recovery */
209struct fsync_inode_entry {
210 struct list_head list; /* list head */
211 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700212 block_t blkaddr; /* block address locating the last fsync */
213 block_t last_dentry; /* block address locating the last dentry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900214};
215
Chao Yudfc08a12016-02-14 18:50:40 +0800216#define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
217#define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900218
Chao Yudfc08a12016-02-14 18:50:40 +0800219#define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
220#define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
221#define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
222#define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900223
Chao Yudfc08a12016-02-14 18:50:40 +0800224#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
225#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700226
Chao Yudfc08a12016-02-14 18:50:40 +0800227static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900228{
Chao Yudfc08a12016-02-14 18:50:40 +0800229 int before = nats_in_cursum(journal);
230 journal->n_nats = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900231 return before;
232}
233
Chao Yudfc08a12016-02-14 18:50:40 +0800234static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900235{
Chao Yudfc08a12016-02-14 18:50:40 +0800236 int before = sits_in_cursum(journal);
237 journal->n_sits = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900238 return before;
239}
240
Chao Yudfc08a12016-02-14 18:50:40 +0800241static inline bool __has_cursum_space(struct f2fs_journal *journal,
242 int size, int type)
Chao Yu184a5cd2014-09-04 18:13:01 +0800243{
244 if (type == NAT_JOURNAL)
Chao Yudfc08a12016-02-14 18:50:40 +0800245 return size <= MAX_NAT_JENTRIES(journal);
246 return size <= MAX_SIT_JENTRIES(journal);
Chao Yu184a5cd2014-09-04 18:13:01 +0800247}
248
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900249/*
Namjae Jeone9750822013-02-04 23:41:41 +0900250 * ioctl commands
251 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700252#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
253#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800254#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700255
256#define F2FS_IOCTL_MAGIC 0xf5
257#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
258#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700259#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800260#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
261#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800262#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Chao Yu456b88e2015-10-05 22:24:19 +0800263#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
Chao Yud323d002015-10-27 09:53:45 +0800264#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
Namjae Jeone9750822013-02-04 23:41:41 +0900265
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700266#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
267#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
268#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700269
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800270/*
271 * should be same as XFS_IOC_GOINGDOWN.
272 * Flags for going down operation used by FS_IOC_GOINGDOWN
273 */
274#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
275#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
276#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
277#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
Jaegeuk Kimc912a822015-10-07 09:46:37 -0700278#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800279
Namjae Jeone9750822013-02-04 23:41:41 +0900280#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
281/*
282 * ioctl commands in 32 bit emulation
283 */
Chao Yu04ef4b62015-11-10 18:44:20 +0800284#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
285#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
286#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
Namjae Jeone9750822013-02-04 23:41:41 +0900287#endif
288
Chao Yud323d002015-10-27 09:53:45 +0800289struct f2fs_defragment {
290 u64 start;
291 u64 len;
292};
293
Namjae Jeone9750822013-02-04 23:41:41 +0900294/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900295 * For INODE and NODE manager
296 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700297/* for directory operations */
298struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700299 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700300 const void *bitmap;
301 struct f2fs_dir_entry *dentry;
302 __u8 (*filename)[F2FS_SLOT_LEN];
303 int max;
304};
305
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700306static inline void make_dentry_ptr(struct inode *inode,
307 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700308{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700309 d->inode = inode;
310
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700311 if (type == 1) {
312 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
313 d->max = NR_DENTRY_IN_BLOCK;
314 d->bitmap = &t->dentry_bitmap;
315 d->dentry = t->dentry;
316 d->filename = t->filename;
317 } else {
318 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
319 d->max = NR_INLINE_DENTRY;
320 d->bitmap = &t->dentry_bitmap;
321 d->dentry = t->dentry;
322 d->filename = t->filename;
323 }
324}
325
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900326/*
327 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
328 * as its node offset to distinguish from index node blocks.
329 * But some bits are used to mark the node block.
330 */
331#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
332 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900333enum {
334 ALLOC_NODE, /* allocate a new node page if needed */
335 LOOKUP_NODE, /* look up a node without readahead */
336 LOOKUP_NODE_RA, /*
337 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800338 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900339 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900340};
341
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700342#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900343
Chao Yu817202d92014-04-28 17:59:43 +0800344#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
345
Chao Yu13054c52015-02-05 17:52:58 +0800346/* vector size for gang look-up from extent cache that consists of radix tree */
347#define EXT_TREE_VEC_SIZE 64
348
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900349/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800350#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
351
352/* number of extent info in extent cache we try to shrink */
353#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900354
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900355struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800356 unsigned int fofs; /* start offset in a file */
357 u32 blk; /* start block address of the extent */
358 unsigned int len; /* length of the extent */
359};
360
361struct extent_node {
362 struct rb_node rb_node; /* rb node located in rb-tree */
363 struct list_head list; /* node in global extent list of sbi */
364 struct extent_info ei; /* extent info */
Hou Pengyang201ef5e2016-01-26 12:56:26 +0000365 struct extent_tree *et; /* extent tree pointer */
Chao Yu13054c52015-02-05 17:52:58 +0800366};
367
368struct extent_tree {
369 nid_t ino; /* inode number */
370 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800371 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700372 struct extent_info largest; /* largested extent info */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800373 struct list_head list; /* to be used by sbi->zombie_list */
Chao Yu13054c52015-02-05 17:52:58 +0800374 rwlock_t lock; /* protect extent info rb-tree */
Chao Yu68e35382016-01-08 20:22:52 +0800375 atomic_t node_cnt; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900376};
377
378/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700379 * This structure is taken from ext4_map_blocks.
380 *
381 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
382 */
383#define F2FS_MAP_NEW (1 << BH_New)
384#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700385#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
386#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
387 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700388
389struct f2fs_map_blocks {
390 block_t m_pblk;
391 block_t m_lblk;
392 unsigned int m_len;
393 unsigned int m_flags;
Chao Yuda859852016-01-26 15:42:58 +0800394 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700395};
396
Chao Yue2b4e2b2015-08-19 19:11:19 +0800397/* for flag in get_data_block */
398#define F2FS_GET_BLOCK_READ 0
399#define F2FS_GET_BLOCK_DIO 1
400#define F2FS_GET_BLOCK_FIEMAP 2
401#define F2FS_GET_BLOCK_BMAP 3
Jaegeuk Kimb439b102016-02-03 13:09:09 -0800402#define F2FS_GET_BLOCK_PRE_DIO 4
Jaegeuk Kim24b84912016-02-03 13:49:44 -0800403#define F2FS_GET_BLOCK_PRE_AIO 5
Chao Yue2b4e2b2015-08-19 19:11:19 +0800404
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700405/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900406 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
407 */
408#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900409#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700410#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700411#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900412
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700413#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
414#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
415#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
416#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
417#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
418#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700419#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
420#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
421#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700422#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
423#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700424
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 Kim1beba1b2016-05-13 12:47:11 -0700439 struct percpu_counter 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 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700444
Chao Yu2710fd72015-12-15 13:30:45 +0800445 struct list_head dirty_list; /* linked in global dirty list */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700446 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
447 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700448 struct extent_tree *extent_tree; /* cached extent_tree entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900449};
450
451static inline void get_extent_info(struct extent_info *ext,
Chao Yubd933d42016-05-04 23:19:47 +0800452 struct f2fs_extent *i_ext)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900453{
Chao Yubd933d42016-05-04 23:19:47 +0800454 ext->fofs = le32_to_cpu(i_ext->fofs);
455 ext->blk = le32_to_cpu(i_ext->blk);
456 ext->len = le32_to_cpu(i_ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900457}
458
459static inline void set_raw_extent(struct extent_info *ext,
460 struct f2fs_extent *i_ext)
461{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900462 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800463 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900464 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900465}
466
Chao Yu429511c2015-02-05 17:54:31 +0800467static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
468 u32 blk, unsigned int len)
469{
470 ei->fofs = fofs;
471 ei->blk = blk;
472 ei->len = len;
473}
474
Chao Yu0bdee482015-03-19 19:27:51 +0800475static inline bool __is_extent_same(struct extent_info *ei1,
476 struct extent_info *ei2)
477{
478 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
479 ei1->len == ei2->len);
480}
481
Chao Yu429511c2015-02-05 17:54:31 +0800482static inline bool __is_extent_mergeable(struct extent_info *back,
483 struct extent_info *front)
484{
485 return (back->fofs + back->len == front->fofs &&
486 back->blk + back->len == front->blk);
487}
488
489static inline bool __is_back_mergeable(struct extent_info *cur,
490 struct extent_info *back)
491{
492 return __is_extent_mergeable(back, cur);
493}
494
495static inline bool __is_front_mergeable(struct extent_info *cur,
496 struct extent_info *front)
497{
498 return __is_extent_mergeable(cur, front);
499}
500
Chao Yu4abd3f52015-09-22 21:07:47 +0800501static inline void __try_update_largest_extent(struct extent_tree *et,
502 struct extent_node *en)
503{
504 if (en->ei.len > et->largest.len)
505 et->largest = en->ei;
506}
507
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900508struct f2fs_nm_info {
509 block_t nat_blkaddr; /* base disk address of NAT */
510 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900511 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900512 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900513 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800514 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Chao Yu2304cb02016-01-18 18:32:58 +0800515 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900516
517 /* NAT cache management */
518 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700519 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800520 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900521 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700522 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800523 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900524
525 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900526 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900527 struct list_head free_nid_list; /* a list for free nids */
528 spinlock_t free_nid_list_lock; /* protect free nid list */
529 unsigned int fcnt; /* the number of free node id */
530 struct mutex build_lock; /* lock for build free nids */
531
532 /* for checkpoint */
533 char *nat_bitmap; /* NAT bitmap pointer */
534 int bitmap_size; /* bitmap size */
535};
536
537/*
538 * this structure is used as one of function parameters.
539 * all the information are dedicated to a given direct node block determined
540 * by the data offset in a file.
541 */
542struct dnode_of_data {
543 struct inode *inode; /* vfs inode pointer */
544 struct page *inode_page; /* its inode page, NULL is possible */
545 struct page *node_page; /* cached direct node page */
546 nid_t nid; /* node id of the direct node block */
547 unsigned int ofs_in_node; /* data offset in the node page */
548 bool inode_page_locked; /* inode page is locked or not */
Jaegeuk Kim93bae092015-12-22 12:59:54 -0800549 bool node_changed; /* is node block changed */
Chao Yu3cf45742016-01-26 15:40:44 +0800550 char cur_level; /* level of hole node page */
551 char max_level; /* level of current page located */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900552 block_t data_blkaddr; /* block address of the node block */
553};
554
555static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
556 struct page *ipage, struct page *npage, nid_t nid)
557{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900558 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900559 dn->inode = inode;
560 dn->inode_page = ipage;
561 dn->node_page = npage;
562 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900563}
564
565/*
566 * For SIT manager
567 *
568 * By default, there are 6 active log areas across the whole main area.
569 * When considering hot and cold data separation to reduce cleaning overhead,
570 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
571 * respectively.
572 * In the current design, you should not change the numbers intentionally.
573 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
574 * logs individually according to the underlying devices. (default: 6)
575 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
576 * data and 8 for node logs.
577 */
578#define NR_CURSEG_DATA_TYPE (3)
579#define NR_CURSEG_NODE_TYPE (3)
580#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
581
582enum {
583 CURSEG_HOT_DATA = 0, /* directory entry blocks */
584 CURSEG_WARM_DATA, /* data blocks */
585 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
586 CURSEG_HOT_NODE, /* direct node blocks of directory files */
587 CURSEG_WARM_NODE, /* direct node blocks of normal files */
588 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800589 NO_CHECK_TYPE,
590 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900591};
592
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900593struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900594 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800595 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900596 int ret;
597};
598
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800599struct flush_cmd_control {
600 struct task_struct *f2fs_issue_flush; /* flush thread */
601 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800602 struct llist_head issue_list; /* list for command issue */
603 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800604};
605
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900606struct f2fs_sm_info {
607 struct sit_info *sit_info; /* whole segment information */
608 struct free_segmap_info *free_info; /* free segment information */
609 struct dirty_seglist_info *dirty_info; /* dirty segment information */
610 struct curseg_info *curseg_array; /* active segment information */
611
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900612 block_t seg0_blkaddr; /* block address of 0'th segment */
613 block_t main_blkaddr; /* start block address of main area */
614 block_t ssa_blkaddr; /* start block address of SSA area */
615
616 unsigned int segment_count; /* total # of segments */
617 unsigned int main_segments; /* # of segments in main area */
618 unsigned int reserved_segments; /* # of reserved segments */
619 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900620
621 /* a threshold to reclaim prefree segments */
622 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900623
624 /* for small discard management */
625 struct list_head discard_list; /* 4KB discard list */
626 int nr_discards; /* # of discards in the list */
627 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900628
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800629 /* for batched trimming */
630 unsigned int trim_sections; /* # of sections to trim */
631
Chao Yu184a5cd2014-09-04 18:13:01 +0800632 struct list_head sit_entry_set; /* sit entry set list */
633
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900634 unsigned int ipu_policy; /* in-place-update policy */
635 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700636 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900637
638 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800639 struct flush_cmd_control *cmd_control_info;
640
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900641};
642
643/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900644 * For superblock
645 */
646/*
647 * COUNT_TYPE for monitoring
648 *
649 * f2fs monitors the number of several block types such as on-writeback,
650 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
651 */
652enum count_type {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900653 F2FS_DIRTY_DENTS,
Chao Yuc227f912015-12-16 13:09:20 +0800654 F2FS_DIRTY_DATA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900655 F2FS_DIRTY_NODES,
656 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800657 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900658 NR_COUNT_TYPE,
659};
660
661/*
arter97e1c42042014-08-06 23:22:50 +0900662 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900663 * The available types are:
664 * DATA User data pages. It operates as async mode.
665 * NODE Node pages. It operates as async mode.
666 * META FS metadata pages such as SIT, NAT, CP.
667 * NR_PAGE_TYPE The number of page types.
668 * META_FLUSH Make sure the previous pages are written
669 * with waiting the bio's completion
670 * ... Only can be used with META.
671 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900672#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900673enum page_type {
674 DATA,
675 NODE,
676 META,
677 NR_PAGE_TYPE,
678 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700679 INMEM, /* the below types are used by tracepoints only. */
680 INMEM_DROP,
Chao Yu28bc1062016-02-06 14:40:34 +0800681 INMEM_REVOKE,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700682 IPU,
683 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900684};
685
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900686struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700687 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800688 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
689 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Chao Yu7a9d7542016-02-22 18:36:38 +0800690 block_t new_blkaddr; /* new block address to be written */
Chao Yu28bc1062016-02-06 14:40:34 +0800691 block_t old_blkaddr; /* old block address before Cow */
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 Yuc227f912015-12-16 13:09:20 +0800705enum inode_type {
706 DIR_INODE, /* for dirty dir inode */
707 FILE_INODE, /* for dirty regular/symlink inode */
708 NR_INODE_TYPE,
709};
710
Chao Yu67298802014-11-18 11:18:36 +0800711/* for inner inode cache management */
712struct inode_management {
713 struct radix_tree_root ino_root; /* ino entry array */
714 spinlock_t ino_lock; /* for ino entry lock */
715 struct list_head ino_list; /* inode list head */
716 unsigned long ino_num; /* number of entries */
717};
718
Chao Yucaf00472015-01-28 17:48:42 +0800719/* For s_flag in struct f2fs_sb_info */
720enum {
721 SBI_IS_DIRTY, /* dirty flag for checkpoint */
722 SBI_IS_CLOSE, /* specify unmounting */
723 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
724 SBI_POR_DOING, /* recovery is doing or not */
Jaegeuk Kimdf728b02016-03-23 17:05:27 -0700725 SBI_NEED_SB_WRITE, /* need to recover superblock */
Chao Yucaf00472015-01-28 17:48:42 +0800726};
727
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800728enum {
729 CP_TIME,
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800730 REQ_TIME,
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800731 MAX_TIME,
732};
733
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700734#ifdef CONFIG_F2FS_FS_ENCRYPTION
735#define F2FS_KEY_DESC_PREFIX "f2fs:"
736#define F2FS_KEY_DESC_PREFIX_SIZE 5
737#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900738struct f2fs_sb_info {
739 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900740 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900741 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yue8240f62015-12-15 17:19:26 +0800742 int valid_super_block; /* valid super block no */
Chao Yucaf00472015-01-28 17:48:42 +0800743 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900744
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700745#ifdef CONFIG_F2FS_FS_ENCRYPTION
746 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
747 u8 key_prefix_size;
748#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900749 /* for node-related operations */
750 struct f2fs_nm_info *nm_info; /* node manager */
751 struct inode *node_inode; /* cache node blocks */
752
753 /* for segment-related operations */
754 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900755
756 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800757 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900758 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900759
760 /* for checkpoint */
761 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
762 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900763 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800764 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800765 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim5463e7c2015-04-21 10:40:54 -0700766 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900767 wait_queue_head_t cp_wait;
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800768 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
769 long interval_time[MAX_TIME]; /* to store thresholds */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900770
Chao Yu67298802014-11-18 11:18:36 +0800771 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700772
773 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800774 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900775
Chao Yuc227f912015-12-16 13:09:20 +0800776 /* for inode management */
777 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
778 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900779
Chao Yu13054c52015-02-05 17:52:58 +0800780 /* for extent tree cache */
781 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
782 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
783 struct list_head extent_list; /* lru list for shrinker */
784 spinlock_t extent_lock; /* locking extent lru list */
Jaegeuk Kim7441cce2015-12-21 19:20:15 -0800785 atomic_t total_ext_tree; /* extent tree count */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800786 struct list_head zombie_list; /* extent zombie tree list */
Jaegeuk Kim74fd8d92015-12-21 19:25:50 -0800787 atomic_t total_zombie_tree; /* extent zombie tree count */
Chao Yu13054c52015-02-05 17:52:58 +0800788 atomic_t total_ext_node; /* extent info count */
789
arter97e1c42042014-08-06 23:22:50 +0900790 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900791 unsigned int log_sectors_per_block; /* log2 sectors per block */
792 unsigned int log_blocksize; /* log2 block size */
793 unsigned int blocksize; /* block size */
794 unsigned int root_ino_num; /* root inode number*/
795 unsigned int node_ino_num; /* node inode number*/
796 unsigned int meta_ino_num; /* meta inode number*/
797 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
798 unsigned int blocks_per_seg; /* blocks per segment */
799 unsigned int segs_per_sec; /* segments per section */
800 unsigned int secs_per_zone; /* sections per zone */
801 unsigned int total_sections; /* total section count */
802 unsigned int total_node_count; /* total node block count */
803 unsigned int total_valid_node_count; /* valid node block count */
Chao Yue0afc4d2015-12-31 14:35:37 +0800804 loff_t max_file_blocks; /* max block index of file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900805 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900806 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900807
808 block_t user_block_count; /* # of user blocks */
809 block_t total_valid_block_count; /* # of valid blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700810 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900811 block_t last_valid_block_count; /* for recovery */
812 u32 s_next_generation; /* for NFS support */
Jaegeuk Kimf5730182016-05-17 16:23:36 -0700813 atomic_t nr_wb_bios; /* # of writeback bios */
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700814
815 /* # of pages, see count_type */
816 struct percpu_counter nr_pages[NR_COUNT_TYPE];
Jaegeuk Kim41382ec2016-05-16 11:06:50 -0700817 /* # of allocated blocks */
818 struct percpu_counter alloc_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900819
Jaegeuk Kim513c5f32016-05-16 11:42:32 -0700820 /* valid inode count */
821 struct percpu_counter total_valid_inode_count;
822
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900823 struct f2fs_mount_info mount_opt; /* mount options */
824
825 /* for cleaning operations */
826 struct mutex gc_mutex; /* mutex for GC */
827 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900828 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900829
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900830 /* maximum # of trials to find a victim segment for SSR and GC */
831 unsigned int max_victim_search;
832
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900833 /*
834 * for stat information.
835 * one is for the LFS mode, and the other is for the SSR mode.
836 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900837#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900838 struct f2fs_stat_info *stat_info; /* FS status information */
839 unsigned int segment_count[2]; /* # of allocated segments */
840 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900841 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800842 atomic64_t total_hit_ext; /* # of lookup extent cache */
843 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
844 atomic64_t read_hit_largest; /* # of hit largest extent node */
845 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800846 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800847 atomic_t inline_inode; /* # of inline_data inodes */
848 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900849 int bg_gc; /* background gc calls */
Chao Yu33fbd512015-12-17 17:14:44 +0800850 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900851#endif
852 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900853 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900854
855 /* For sysfs suppport */
856 struct kobject s_kobj;
857 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700858
859 /* For shrinker support */
860 struct list_head s_list;
861 struct mutex umount_mutex;
862 unsigned int shrinker_run_no;
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800863
864 /* For write statistics */
865 u64 sectors_written_start;
866 u64 kbytes_written;
Keith Mok43b65732016-03-02 12:04:24 -0800867
868 /* Reference to checksum algorithm driver via cryptoapi */
869 struct crypto_shash *s_chksum_driver;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900870};
871
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800872/* For write statistics. Suppose sector size is 512 bytes,
873 * and the return value is in kbytes. s is of struct f2fs_sb_info.
874 */
875#define BD_PART_WRITTEN(s) \
876(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
877 s->sectors_written_start) >> 1)
878
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800879static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
880{
881 sbi->last_time[type] = jiffies;
882}
883
884static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
885{
886 struct timespec ts = {sbi->interval_time[type], 0};
887 unsigned long interval = timespec_to_jiffies(&ts);
888
889 return time_after(jiffies, sbi->last_time[type] + interval);
890}
891
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800892static inline bool is_idle(struct f2fs_sb_info *sbi)
893{
894 struct block_device *bdev = sbi->sb->s_bdev;
895 struct request_queue *q = bdev_get_queue(bdev);
896 struct request_list *rl = &q->root_rl;
897
898 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
899 return 0;
900
901 return f2fs_time_over(sbi, REQ_TIME);
902}
903
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900904/*
905 * Inline functions
906 */
Keith Mok43b65732016-03-02 12:04:24 -0800907static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
908 unsigned int length)
909{
910 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
911 u32 *ctx = (u32 *)shash_desc_ctx(shash);
912 int err;
913
914 shash->tfm = sbi->s_chksum_driver;
915 shash->flags = 0;
916 *ctx = F2FS_SUPER_MAGIC;
917
918 err = crypto_shash_update(shash, address, length);
919 BUG_ON(err);
920
921 return *ctx;
922}
923
924static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
925 void *buf, size_t buf_size)
926{
927 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
928}
929
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900930static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
931{
932 return container_of(inode, struct f2fs_inode_info, vfs_inode);
933}
934
935static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
936{
937 return sb->s_fs_info;
938}
939
Jaegeuk Kim40813632014-09-02 15:31:18 -0700940static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
941{
942 return F2FS_SB(inode->i_sb);
943}
944
945static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
946{
947 return F2FS_I_SB(mapping->host);
948}
949
950static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
951{
952 return F2FS_M_SB(page->mapping);
953}
954
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900955static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
956{
957 return (struct f2fs_super_block *)(sbi->raw_super);
958}
959
960static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
961{
962 return (struct f2fs_checkpoint *)(sbi->ckpt);
963}
964
Gu Zheng45590712013-07-15 17:57:38 +0800965static inline struct f2fs_node *F2FS_NODE(struct page *page)
966{
967 return (struct f2fs_node *)page_address(page);
968}
969
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900970static inline struct f2fs_inode *F2FS_INODE(struct page *page)
971{
972 return &((struct f2fs_node *)page_address(page))->i;
973}
974
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900975static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
976{
977 return (struct f2fs_nm_info *)(sbi->nm_info);
978}
979
980static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
981{
982 return (struct f2fs_sm_info *)(sbi->sm_info);
983}
984
985static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
986{
987 return (struct sit_info *)(SM_I(sbi)->sit_info);
988}
989
990static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
991{
992 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
993}
994
995static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
996{
997 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
998}
999
Gu Zheng9df27d92014-01-20 18:37:04 +08001000static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1001{
1002 return sbi->meta_inode->i_mapping;
1003}
1004
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +09001005static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1006{
1007 return sbi->node_inode->i_mapping;
1008}
1009
Chao Yucaf00472015-01-28 17:48:42 +08001010static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001011{
Chao Yucaf00472015-01-28 17:48:42 +08001012 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001013}
1014
Chao Yucaf00472015-01-28 17:48:42 +08001015static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001016{
Chao Yucaf00472015-01-28 17:48:42 +08001017 sbi->s_flag |= (0x01 << type);
1018}
1019
1020static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1021{
1022 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001023}
1024
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001025static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1026{
1027 return le64_to_cpu(cp->checkpoint_ver);
1028}
1029
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001030static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1031{
1032 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1033 return ckpt_flags & f;
1034}
1035
1036static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1037{
1038 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1039 ckpt_flags |= f;
1040 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1041}
1042
1043static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1044{
1045 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1046 ckpt_flags &= (~f);
1047 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1048}
1049
Gu Zhenge4795562013-09-27 18:08:30 +08001050static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001051{
Gu Zhenge4795562013-09-27 18:08:30 +08001052 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001053}
1054
Gu Zhenge4795562013-09-27 18:08:30 +08001055static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001056{
Gu Zhenge4795562013-09-27 18:08:30 +08001057 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001058}
1059
Gu Zhenge4795562013-09-27 18:08:30 +08001060static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001061{
Yang Shi59692b72016-02-26 16:25:25 -08001062 down_write(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001063}
1064
Gu Zhenge4795562013-09-27 18:08:30 +08001065static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001066{
Gu Zhenge4795562013-09-27 18:08:30 +08001067 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001068}
1069
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001070static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1071{
1072 int reason = CP_SYNC;
1073
1074 if (test_opt(sbi, FASTBOOT))
1075 reason = CP_FASTBOOT;
1076 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1077 reason = CP_UMOUNT;
1078 return reason;
1079}
1080
1081static inline bool __remain_node_summaries(int reason)
1082{
1083 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1084}
1085
1086static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1087{
1088 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1089 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1090}
1091
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001092/*
1093 * Check whether the given nid is within node id range.
1094 */
Namjae Jeon064e0822013-03-17 17:27:20 +09001095static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001096{
Chao Yud6b7d4b2014-06-12 13:23:41 +08001097 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1098 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +08001099 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001100 return -EINVAL;
1101 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001102}
1103
1104#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1105
1106/*
1107 * Check whether the inode has blocks or not
1108 */
1109static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1110{
1111 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001112 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001113 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001114 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001115}
1116
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001117static inline bool f2fs_has_xattr_block(unsigned int ofs)
1118{
1119 return ofs == XATTR_NODE_OFFSET;
1120}
1121
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001122static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
Chao Yu46008c62016-05-09 19:56:30 +08001123 struct inode *inode, blkcnt_t *count)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001124{
1125 block_t valid_block_count;
1126
1127 spin_lock(&sbi->stat_lock);
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001128#ifdef CONFIG_F2FS_FAULT_INJECTION
1129 if (time_to_inject(FAULT_BLOCK)) {
1130 spin_unlock(&sbi->stat_lock);
1131 return false;
1132 }
1133#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001134 valid_block_count =
Chao Yu46008c62016-05-09 19:56:30 +08001135 sbi->total_valid_block_count + (block_t)(*count);
Chao Yucfb271d2013-12-05 17:15:22 +08001136 if (unlikely(valid_block_count > sbi->user_block_count)) {
Chao Yu46008c62016-05-09 19:56:30 +08001137 *count = sbi->user_block_count - sbi->total_valid_block_count;
1138 if (!*count) {
1139 spin_unlock(&sbi->stat_lock);
1140 return false;
1141 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001142 }
Chao Yu46008c62016-05-09 19:56:30 +08001143 /* *count can be recalculated */
1144 inode->i_blocks += *count;
1145 sbi->total_valid_block_count =
1146 sbi->total_valid_block_count + (block_t)(*count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001147 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001148
1149 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001150 return true;
1151}
1152
Gu Zhengda19b0d2013-11-19 18:03:27 +08001153static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001154 struct inode *inode,
1155 blkcnt_t count)
1156{
1157 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001158 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1159 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001160 inode->i_blocks -= count;
1161 sbi->total_valid_block_count -= (block_t)count;
1162 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001163}
1164
1165static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1166{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001167 percpu_counter_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001168 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001169}
1170
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001171static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001172{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001173 percpu_counter_inc(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001174 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1175 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001176}
1177
1178static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1179{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001180 percpu_counter_dec(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001181}
1182
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001183static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001184{
Chao Yu5ac9f362015-06-29 18:14:10 +08001185 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1186 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001187 return;
1188
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001189 percpu_counter_dec(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001190 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1191 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001192}
1193
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001194static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001195{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001196 return percpu_counter_sum_positive(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001197}
1198
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001199static inline s64 get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001200{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001201 return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001202}
1203
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001204static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1205{
Chao Yu3519e3f2015-12-01 11:56:52 +08001206 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001207 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1208 sbi->log_blocks_per_seg;
1209
1210 return segs / sbi->segs_per_sec;
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001211}
1212
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001213static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1214{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001215 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001216}
1217
1218static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1219{
1220 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1221
1222 /* return NAT or SIT bitmap */
1223 if (flag == NAT_BITMAP)
1224 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1225 else if (flag == SIT_BITMAP)
1226 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1227
1228 return 0;
1229}
1230
Wanpeng Li55141482015-02-26 07:57:20 +08001231static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1232{
1233 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1234}
1235
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001236static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1237{
1238 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001239 int offset;
1240
Wanpeng Li55141482015-02-26 07:57:20 +08001241 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001242 if (flag == NAT_BITMAP)
1243 return &ckpt->sit_nat_version_bitmap;
1244 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001245 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001246 } else {
1247 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001248 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001249 return &ckpt->sit_nat_version_bitmap + offset;
1250 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001251}
1252
1253static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1254{
1255 block_t start_addr;
1256 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001257 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001258
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001259 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001260
1261 /*
1262 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001263 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001264 */
1265 if (!(ckpt_version & 1))
1266 start_addr += sbi->blocks_per_seg;
1267
1268 return start_addr;
1269}
1270
1271static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1272{
1273 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1274}
1275
1276static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001277 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001278{
1279 block_t valid_block_count;
1280 unsigned int valid_node_count;
1281
1282 spin_lock(&sbi->stat_lock);
1283
Gu Zhengef86d702013-11-19 18:03:38 +08001284 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001285 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001286 spin_unlock(&sbi->stat_lock);
1287 return false;
1288 }
1289
Gu Zhengef86d702013-11-19 18:03:38 +08001290 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001291 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001292 spin_unlock(&sbi->stat_lock);
1293 return false;
1294 }
1295
1296 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001297 inode->i_blocks++;
1298
Gu Zhengef86d702013-11-19 18:03:38 +08001299 sbi->total_valid_node_count++;
1300 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001301 spin_unlock(&sbi->stat_lock);
1302
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001303 percpu_counter_inc(&sbi->alloc_valid_block_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001304 return true;
1305}
1306
1307static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001308 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001309{
1310 spin_lock(&sbi->stat_lock);
1311
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001312 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1313 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1314 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001315
Gu Zhengef86d702013-11-19 18:03:38 +08001316 inode->i_blocks--;
1317 sbi->total_valid_node_count--;
1318 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001319
1320 spin_unlock(&sbi->stat_lock);
1321}
1322
1323static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1324{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001325 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001326}
1327
1328static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1329{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001330 percpu_counter_inc(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001331}
1332
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001333static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001334{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001335 percpu_counter_dec(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001336}
1337
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001338static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001339{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001340 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001341}
1342
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001343static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1344 pgoff_t index, bool for_write)
1345{
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -07001346#ifdef CONFIG_F2FS_FAULT_INJECTION
1347 struct page *page = find_lock_page(mapping, index);
1348 if (page)
1349 return page;
1350
1351 if (time_to_inject(FAULT_PAGE_ALLOC))
1352 return NULL;
1353#endif
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001354 if (!for_write)
1355 return grab_cache_page(mapping, index);
1356 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1357}
1358
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001359static inline void f2fs_copy_page(struct page *src, struct page *dst)
1360{
1361 char *src_kaddr = kmap(src);
1362 char *dst_kaddr = kmap(dst);
1363
1364 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1365 kunmap(dst);
1366 kunmap(src);
1367}
1368
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001369static inline void f2fs_put_page(struct page *page, int unlock)
1370{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001371 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001372 return;
1373
1374 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001375 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001376 unlock_page(page);
1377 }
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001378 put_page(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001379}
1380
1381static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1382{
1383 if (dn->node_page)
1384 f2fs_put_page(dn->node_page, 1);
1385 if (dn->inode_page && dn->node_page != dn->inode_page)
1386 f2fs_put_page(dn->inode_page, 0);
1387 dn->node_page = NULL;
1388 dn->inode_page = NULL;
1389}
1390
1391static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001392 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001393{
Gu Zhenge8512d22014-03-07 18:43:28 +08001394 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001395}
1396
Gu Zheng7bd59382013-10-22 14:52:26 +08001397static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1398 gfp_t flags)
1399{
1400 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001401
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001402 entry = kmem_cache_alloc(cachep, flags);
1403 if (!entry)
1404 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001405 return entry;
1406}
1407
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001408static inline struct bio *f2fs_bio_alloc(int npages)
1409{
1410 struct bio *bio;
1411
1412 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001413 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001414 if (!bio)
1415 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001416 return bio;
1417}
1418
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001419static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1420 unsigned long index, void *item)
1421{
1422 while (radix_tree_insert(root, index, item))
1423 cond_resched();
1424}
1425
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001426#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1427
1428static inline bool IS_INODE(struct page *page)
1429{
Gu Zheng45590712013-07-15 17:57:38 +08001430 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001431 return RAW_IS_INODE(p);
1432}
1433
1434static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1435{
1436 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1437}
1438
1439static inline block_t datablock_addr(struct page *node_page,
1440 unsigned int offset)
1441{
1442 struct f2fs_node *raw_node;
1443 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001444 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001445 addr_array = blkaddr_in_node(raw_node);
1446 return le32_to_cpu(addr_array[offset]);
1447}
1448
1449static inline int f2fs_test_bit(unsigned int nr, char *addr)
1450{
1451 int mask;
1452
1453 addr += (nr >> 3);
1454 mask = 1 << (7 - (nr & 0x07));
1455 return mask & *addr;
1456}
1457
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001458static inline void f2fs_set_bit(unsigned int nr, char *addr)
1459{
1460 int mask;
1461
1462 addr += (nr >> 3);
1463 mask = 1 << (7 - (nr & 0x07));
1464 *addr |= mask;
1465}
1466
1467static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1468{
1469 int mask;
1470
1471 addr += (nr >> 3);
1472 mask = 1 << (7 - (nr & 0x07));
1473 *addr &= ~mask;
1474}
1475
Gu Zheng52aca072014-10-20 17:45:51 +08001476static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001477{
1478 int mask;
1479 int ret;
1480
1481 addr += (nr >> 3);
1482 mask = 1 << (7 - (nr & 0x07));
1483 ret = mask & *addr;
1484 *addr |= mask;
1485 return ret;
1486}
1487
Gu Zheng52aca072014-10-20 17:45:51 +08001488static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001489{
1490 int mask;
1491 int ret;
1492
1493 addr += (nr >> 3);
1494 mask = 1 << (7 - (nr & 0x07));
1495 ret = mask & *addr;
1496 *addr &= ~mask;
1497 return ret;
1498}
1499
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001500static inline void f2fs_change_bit(unsigned int nr, char *addr)
1501{
1502 int mask;
1503
1504 addr += (nr >> 3);
1505 mask = 1 << (7 - (nr & 0x07));
1506 *addr ^= mask;
1507}
1508
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001509/* used for f2fs_inode_info->flags */
1510enum {
1511 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001512 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001513 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001514 FI_INC_LINK, /* need to increment i_nlink */
1515 FI_ACL_MODE, /* indicate acl mode */
1516 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001517 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001518 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001519 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001520 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001521 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001522 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001523 FI_APPEND_WRITE, /* inode has appended data */
1524 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001525 FI_NEED_IPU, /* used for ipu per file */
1526 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001527 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001528 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001529 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001530 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001531 FI_INLINE_DOTS, /* indicate inline dot dentries */
Chao Yud323d002015-10-27 09:53:45 +08001532 FI_DO_DEFRAG, /* indicate defragment is running */
Chao Yuc227f912015-12-16 13:09:20 +08001533 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001534};
1535
1536static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1537{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001538 if (!test_bit(flag, &fi->flags))
1539 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001540}
1541
1542static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1543{
1544 return test_bit(flag, &fi->flags);
1545}
1546
1547static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1548{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001549 if (test_bit(flag, &fi->flags))
1550 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001551}
1552
1553static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1554{
1555 fi->i_acl_mode = mode;
1556 set_inode_flag(fi, FI_ACL_MODE);
1557}
1558
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001559static inline void get_inline_info(struct f2fs_inode_info *fi,
1560 struct f2fs_inode *ri)
1561{
1562 if (ri->i_inline & F2FS_INLINE_XATTR)
1563 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001564 if (ri->i_inline & F2FS_INLINE_DATA)
1565 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001566 if (ri->i_inline & F2FS_INLINE_DENTRY)
1567 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001568 if (ri->i_inline & F2FS_DATA_EXIST)
1569 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001570 if (ri->i_inline & F2FS_INLINE_DOTS)
1571 set_inode_flag(fi, FI_INLINE_DOTS);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001572}
1573
1574static inline void set_raw_inline(struct f2fs_inode_info *fi,
1575 struct f2fs_inode *ri)
1576{
1577 ri->i_inline = 0;
1578
1579 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1580 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001581 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1582 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001583 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1584 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001585 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1586 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001587 if (is_inode_flag_set(fi, FI_INLINE_DOTS))
1588 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001589}
1590
Chao Yu987c7c32014-03-12 15:59:03 +08001591static inline int f2fs_has_inline_xattr(struct inode *inode)
1592{
1593 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1594}
1595
Chao Yu81ca7352016-01-26 15:39:35 +08001596static inline unsigned int addrs_per_inode(struct inode *inode)
Jaegeuk Kimde936532013-08-12 21:08:03 +09001597{
Chao Yu81ca7352016-01-26 15:39:35 +08001598 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001599 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1600 return DEF_ADDRS_PER_INODE;
1601}
1602
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001603static inline void *inline_xattr_addr(struct page *page)
1604{
Chao Yu695fd1e2014-02-27 19:52:21 +08001605 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001606 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1607 F2FS_INLINE_XATTR_ADDRS]);
1608}
1609
1610static inline int inline_xattr_size(struct inode *inode)
1611{
Chao Yu987c7c32014-03-12 15:59:03 +08001612 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001613 return F2FS_INLINE_XATTR_ADDRS << 2;
1614 else
1615 return 0;
1616}
1617
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001618static inline int f2fs_has_inline_data(struct inode *inode)
1619{
1620 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1621}
1622
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001623static inline void f2fs_clear_inline_inode(struct inode *inode)
1624{
1625 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1626 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1627}
1628
1629static inline int f2fs_exist_data(struct inode *inode)
1630{
1631 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1632}
1633
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001634static inline int f2fs_has_inline_dots(struct inode *inode)
1635{
1636 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS);
1637}
1638
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001639static inline bool f2fs_is_atomic_file(struct inode *inode)
1640{
1641 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1642}
1643
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001644static inline bool f2fs_is_volatile_file(struct inode *inode)
1645{
1646 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1647}
1648
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001649static inline bool f2fs_is_first_block_written(struct inode *inode)
1650{
1651 return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN);
1652}
1653
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001654static inline bool f2fs_is_drop_cache(struct inode *inode)
1655{
1656 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1657}
1658
Huajun Li1001b342013-11-10 23:13:16 +08001659static inline void *inline_data_addr(struct page *page)
1660{
Chao Yu695fd1e2014-02-27 19:52:21 +08001661 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001662 return (void *)&(ri->i_addr[1]);
1663}
1664
Chao Yu34d67de2014-09-24 18:15:19 +08001665static inline int f2fs_has_inline_dentry(struct inode *inode)
1666{
1667 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1668}
1669
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001670static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1671{
1672 if (!f2fs_has_inline_dentry(dir))
1673 kunmap(page);
1674}
1675
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001676static inline int is_file(struct inode *inode, int type)
1677{
1678 return F2FS_I(inode)->i_advise & type;
1679}
1680
1681static inline void set_file(struct inode *inode, int type)
1682{
1683 F2FS_I(inode)->i_advise |= type;
1684}
1685
1686static inline void clear_file(struct inode *inode, int type)
1687{
1688 F2FS_I(inode)->i_advise &= ~type;
1689}
1690
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001691static inline int f2fs_readonly(struct super_block *sb)
1692{
1693 return sb->s_flags & MS_RDONLY;
1694}
1695
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001696static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1697{
1698 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1699}
1700
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001701static inline bool is_dot_dotdot(const struct qstr *str)
1702{
1703 if (str->len == 1 && str->name[0] == '.')
1704 return true;
1705
1706 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1707 return true;
1708
1709 return false;
1710}
1711
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001712static inline bool f2fs_may_extent_tree(struct inode *inode)
1713{
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001714 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
1715 is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT))
1716 return false;
1717
Al Viro886f56f2015-12-05 03:56:06 -05001718 return S_ISREG(inode->i_mode);
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001719}
1720
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001721static inline void *f2fs_kmalloc(size_t size, gfp_t flags)
1722{
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -07001723#ifdef CONFIG_F2FS_FAULT_INJECTION
1724 if (time_to_inject(FAULT_KMALLOC))
1725 return NULL;
1726#endif
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001727 return kmalloc(size, flags);
1728}
1729
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001730static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1731{
1732 void *ret;
1733
1734 ret = kmalloc(size, flags | __GFP_NOWARN);
1735 if (!ret)
1736 ret = __vmalloc(size, flags, PAGE_KERNEL);
1737 return ret;
1738}
1739
1740static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1741{
1742 void *ret;
1743
1744 ret = kzalloc(size, flags | __GFP_NOWARN);
1745 if (!ret)
1746 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1747 return ret;
1748}
1749
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001750#define get_inode_mode(i) \
1751 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1752 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1753
Chao Yu267378d2014-04-23 14:10:24 +08001754/* get offset of first page in next direct node */
Chao Yu81ca7352016-01-26 15:39:35 +08001755#define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1756 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1757 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1758 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
Chao Yu267378d2014-04-23 14:10:24 +08001759
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001760/*
1761 * file.c
1762 */
1763int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1764void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001765int truncate_blocks(struct inode *, u64, bool);
Chao Yub0154892015-08-24 17:39:42 +08001766int f2fs_truncate(struct inode *, bool);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001767int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001768int f2fs_setattr(struct dentry *, struct iattr *);
1769int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001770int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001771long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001772long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001773
1774/*
1775 * inode.c
1776 */
1777void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001778struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001779int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -08001780int update_inode(struct inode *, struct page *);
1781int update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001782int f2fs_write_inode(struct inode *, struct writeback_control *);
1783void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001784void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001785
1786/*
1787 * namei.c
1788 */
1789struct dentry *f2fs_get_parent(struct dentry *child);
1790
1791/*
1792 * dir.c
1793 */
Chao Yudbeacf02014-09-24 18:17:04 +08001794extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001795void set_de_type(struct f2fs_dir_entry *, umode_t);
Chao Yu675f10b2016-02-22 18:29:18 +08001796unsigned char get_de_type(struct f2fs_dir_entry *);
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001797struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001798 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001799bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001800 unsigned int, struct fscrypt_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001801void do_make_empty_dir(struct inode *, struct inode *,
1802 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001803struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001804 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001805void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001806int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001807void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001808struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1809 struct page **);
1810struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1811ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1812void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1813 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001814int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001815void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001816 const struct qstr *, f2fs_hash_t , unsigned int);
Chao Yu675f10b2016-02-22 18:29:18 +08001817int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1818 struct inode *, nid_t, umode_t);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001819int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1820 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001821void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1822 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001823int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001824bool f2fs_empty_dir(struct inode *);
1825
Al Virob7f7a5e2013-01-25 16:15:43 -05001826static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1827{
David Howells2b0143b2015-03-17 22:25:59 +00001828 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001829 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001830}
1831
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001832/*
1833 * super.c
1834 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001835int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001836int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001837extern __printf(3, 4)
1838void f2fs_msg(struct super_block *, const char *, const char *, ...);
Shawn Lin984ec632016-02-17 11:26:32 +08001839int sanity_check_ckpt(struct f2fs_sb_info *sbi);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001840
1841/*
1842 * hash.c
1843 */
Gu Zhengeee61602014-06-24 18:21:23 +08001844f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001845
1846/*
1847 * node.c
1848 */
1849struct dnode_of_data;
1850struct node_info;
1851
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001852bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001853int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001854bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001855bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001856void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
Chao Yu3cf45742016-01-26 15:40:44 +08001857pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001858int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1859int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001860int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001861int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001862int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001863struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001864struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001865void ra_node_page(struct f2fs_sb_info *, nid_t);
1866struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1867struct page *get_node_page_ra(struct page *, int);
1868void sync_inode_page(struct dnode_of_data *);
Chao Yuda011cc2016-04-27 21:40:15 +08001869void move_node_page(struct page *, int);
Jaegeuk Kim608514d2016-04-15 09:43:17 -07001870int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *,
1871 bool);
Jaegeuk Kim52681372016-04-13 16:24:44 -07001872int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001873bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1874void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1875void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001876int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001877void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001878void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001879int recover_inode_page(struct f2fs_sb_info *, struct page *);
1880int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1881 struct f2fs_summary_block *);
1882void flush_nat_entries(struct f2fs_sb_info *);
1883int build_node_manager(struct f2fs_sb_info *);
1884void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001885int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001886void destroy_node_manager_caches(void);
1887
1888/*
1889 * segment.c
1890 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001891void register_inmem_page(struct inode *, struct page *);
Chao Yu29b96b52016-02-06 14:38:29 +08001892void drop_inmem_pages(struct inode *);
1893int commit_inmem_pages(struct inode *);
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001894void f2fs_balance_fs(struct f2fs_sb_info *, bool);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001895void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001896int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001897int create_flush_cmd_control(struct f2fs_sb_info *);
1898void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001899void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001900bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001901void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001902void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001903void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001904bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001905int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001906void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001907int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001908struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001909void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001910void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001911void write_node_page(unsigned int, struct f2fs_io_info *);
1912void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1913void rewrite_data_page(struct f2fs_io_info *);
Chao Yu4356e482016-02-23 17:52:43 +08001914void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
1915 block_t, block_t, bool, bool);
Chao Yu528e3452015-05-28 19:15:35 +08001916void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
Chao Yu28bc1062016-02-06 14:40:34 +08001917 block_t, block_t, unsigned char, bool, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001918void allocate_data_block(struct f2fs_sb_info *, struct page *,
1919 block_t, block_t *, struct f2fs_summary *, int);
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08001920void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
Chao Yu08b39fb2015-10-08 13:27:34 +08001921void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001922void write_data_summaries(struct f2fs_sb_info *, block_t);
1923void write_node_summaries(struct f2fs_sb_info *, block_t);
Chao Yudfc08a12016-02-14 18:50:40 +08001924int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001925void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001926int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001927void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001928int __init create_segment_manager_caches(void);
1929void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001930
1931/*
1932 * checkpoint.c
1933 */
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07001934void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001935struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1936struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08001937struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08001938bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08001939int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08001940void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001941long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Chao Yua49324f2015-12-15 13:29:47 +08001942void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
1943void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim74ef9242016-05-02 22:09:56 -07001944void release_ino_entry(struct f2fs_sb_info *, bool);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001945bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001946int acquire_orphan_inode(struct f2fs_sb_info *);
1947void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001948void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1949void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08001950int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001951int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001952void update_dirty_page(struct inode *, struct page *);
Chao Yuc227f912015-12-16 13:09:20 +08001953void remove_dirty_inode(struct inode *);
Chao Yu6d5a1492015-12-24 18:04:56 +08001954int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
Chao Yuc34f42e2015-12-23 17:50:30 +08001955int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001956void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001957int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001958void destroy_checkpoint_caches(void);
1959
1960/*
1961 * data.c
1962 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001963void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Chao Yu0c3a5792016-01-18 18:28:11 +08001964void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
1965 struct page *, nid_t, enum page_type, int);
Chao Yu406657d2016-02-24 17:17:55 +08001966void f2fs_flush_merged_bios(struct f2fs_sb_info *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001967int f2fs_submit_page_bio(struct f2fs_io_info *);
1968void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08001969void set_data_blkaddr(struct dnode_of_data *);
Chao Yuf28b3432016-02-24 17:16:47 +08001970void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
Chao Yu46008c62016-05-09 19:56:30 +08001971int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001972int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08001973int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kimb439b102016-02-03 13:09:09 -08001974ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
Huajun Lib6009652013-11-10 23:13:18 +08001975int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001976struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07001977struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001978struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001979struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001980int do_write_data_page(struct f2fs_io_info *);
Chao Yud323d002015-10-27 09:53:45 +08001981int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001982int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08001983void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1984int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001985
1986/*
1987 * gc.c
1988 */
1989int start_gc_thread(struct f2fs_sb_info *);
1990void stop_gc_thread(struct f2fs_sb_info *);
Chao Yu81ca7352016-01-26 15:39:35 +08001991block_t start_bidx_of_node(unsigned int, struct inode *);
Chao Yud530d4d2015-10-05 22:22:44 +08001992int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001993void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001994
1995/*
1996 * recovery.c
1997 */
Jaegeuk Kim6781eab2016-03-23 16:12:58 -07001998int recover_fsync_data(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001999bool space_for_roll_forward(struct f2fs_sb_info *);
2000
2001/*
2002 * debug.c
2003 */
2004#ifdef CONFIG_F2FS_STAT_FS
2005struct f2fs_stat_info {
2006 struct list_head stat_list;
2007 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002008 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2009 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08002010 unsigned long long hit_largest, hit_cached, hit_rbtree;
2011 unsigned long long hit_total, total_ext;
Jaegeuk Kimc00ba552015-12-31 15:24:14 -08002012 int ext_tree, zombie_tree, ext_node;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002013 s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages;
2014 unsigned int ndirty_dirs, ndirty_files;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08002015 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002016 int total_count, utilization;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002017 int bg_gc, wb_bios;
Jaegeuk Kim652be552016-05-10 19:13:50 -07002018 int inline_xattr, inline_inode, inline_dir, orphans;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002019 unsigned int valid_count, valid_node_count, valid_inode_count;
2020 unsigned int bimodal, avg_vblocks;
2021 int util_free, util_valid, util_invalid;
2022 int rsvd_segs, overp_segs;
2023 int dirty_count, node_pages, meta_pages;
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002024 int prefree_count, call_count, cp_count, bg_cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002025 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09002026 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002027 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09002028 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002029 int curseg[NR_CURSEG_TYPE];
2030 int cursec[NR_CURSEG_TYPE];
2031 int curzone[NR_CURSEG_TYPE];
2032
2033 unsigned int segment_count[2];
2034 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09002035 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08002036 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002037};
2038
Gu Zheng963d4f72013-07-12 14:47:11 +08002039static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2040{
Chris Fries6c311ec2014-01-17 14:44:39 -06002041 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08002042}
2043
Changman Lee942e0be2014-02-13 15:12:29 +09002044#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002045#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002046#define stat_inc_call_count(si) ((si)->call_count++)
2047#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
Chao Yu33fbd512015-12-17 17:14:44 +08002048#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2049#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
Chao Yu5b7ee372015-09-30 17:38:48 +08002050#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2051#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2052#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2053#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08002054#define stat_inc_inline_xattr(inode) \
2055 do { \
2056 if (f2fs_has_inline_xattr(inode)) \
2057 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2058 } while (0)
2059#define stat_dec_inline_xattr(inode) \
2060 do { \
2061 if (f2fs_has_inline_xattr(inode)) \
2062 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2063 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002064#define stat_inc_inline_inode(inode) \
2065 do { \
2066 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002067 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002068 } while (0)
2069#define stat_dec_inline_inode(inode) \
2070 do { \
2071 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002072 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002073 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002074#define stat_inc_inline_dir(inode) \
2075 do { \
2076 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002077 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002078 } while (0)
2079#define stat_dec_inline_dir(inode) \
2080 do { \
2081 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002082 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002083 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002084#define stat_inc_seg_type(sbi, curseg) \
2085 ((sbi)->segment_count[(curseg)->alloc_type]++)
2086#define stat_inc_block_count(sbi, curseg) \
2087 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09002088#define stat_inc_inplace_blocks(sbi) \
2089 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09002090#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002091 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002092 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002093 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002094 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002095 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002096 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2097 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002098 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002099 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2100 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002101 } while (0)
2102
2103#define stat_inc_tot_blk_count(si, blks) \
2104 (si->tot_blks += (blks))
2105
Changman Leee1235982014-12-23 08:37:39 +09002106#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002107 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002108 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002109 stat_inc_tot_blk_count(si, blks); \
2110 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002111 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002112 } while (0)
2113
Changman Leee1235982014-12-23 08:37:39 +09002114#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002115 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002116 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002117 stat_inc_tot_blk_count(si, blks); \
2118 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002119 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002120 } while (0)
2121
2122int f2fs_build_stats(struct f2fs_sb_info *);
2123void f2fs_destroy_stats(struct f2fs_sb_info *);
Chao Yu787c7b8c2015-10-29 09:13:04 +08002124int __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09002125void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002126#else
Changman Lee942e0be2014-02-13 15:12:29 +09002127#define stat_inc_cp_count(si)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002128#define stat_inc_bg_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002129#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002130#define stat_inc_bggc_count(si)
Chao Yu33fbd512015-12-17 17:14:44 +08002131#define stat_inc_dirty_inode(sbi, type)
2132#define stat_dec_dirty_inode(sbi, type)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002133#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08002134#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002135#define stat_inc_largest_node_hit(sbi)
2136#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002137#define stat_inc_inline_xattr(inode)
2138#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002139#define stat_inc_inline_inode(inode)
2140#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002141#define stat_inc_inline_dir(inode)
2142#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002143#define stat_inc_seg_type(sbi, curseg)
2144#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002145#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002146#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002147#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002148#define stat_inc_data_blk_count(sbi, blks, gc_type)
2149#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002150
2151static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2152static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Chao Yu787c7b8c2015-10-29 09:13:04 +08002153static inline int __init f2fs_create_root_stats(void) { return 0; }
Namjae Jeon4589d252013-01-15 19:58:47 +09002154static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002155#endif
2156
2157extern const struct file_operations f2fs_dir_operations;
2158extern const struct file_operations f2fs_file_operations;
2159extern const struct inode_operations f2fs_file_inode_operations;
2160extern const struct address_space_operations f2fs_dblock_aops;
2161extern const struct address_space_operations f2fs_node_aops;
2162extern const struct address_space_operations f2fs_meta_aops;
2163extern const struct inode_operations f2fs_dir_inode_operations;
2164extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002165extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002166extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002167extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002168
Huajun Lie18c65b2013-11-10 23:13:19 +08002169/*
2170 * inline.c
2171 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002172bool f2fs_may_inline_data(struct inode *);
2173bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002174void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002175bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002176int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002177int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2178int f2fs_convert_inline_inode(struct inode *);
2179int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002180bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002181struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002182 struct fscrypt_name *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002183struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2184int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002185int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2186 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002187void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2188 struct inode *, struct inode *);
2189bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002190int f2fs_read_inline_dir(struct file *, struct dir_context *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002191 struct fscrypt_str *);
Jaegeuk Kim67f8cf3c2015-10-15 11:34:49 -07002192int f2fs_inline_data_fiemap(struct inode *,
2193 struct fiemap_extent_info *, __u64, __u64);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002194
2195/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002196 * shrinker.c
2197 */
2198unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2199unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2200void f2fs_join_shrinker(struct f2fs_sb_info *);
2201void f2fs_leave_shrinker(struct f2fs_sb_info *);
2202
2203/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002204 * extent_cache.c
2205 */
2206unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
Jaegeuk Kimed3d1252015-12-28 11:39:06 -08002207bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
Chao Yua28ef1f2015-07-08 17:59:36 +08002208unsigned int f2fs_destroy_extent_node(struct inode *);
2209void f2fs_destroy_extent_tree(struct inode *);
2210bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2211void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002212void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2213 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002214void init_extent_cache_info(struct f2fs_sb_info *);
2215int __init create_extent_cache(void);
2216void destroy_extent_cache(void);
2217
2218/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002219 * crypto support
2220 */
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002221static inline bool f2fs_encrypted_inode(struct inode *inode)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002222{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002223 return file_is_encrypt(inode);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002224}
2225
2226static inline void f2fs_set_encrypted_inode(struct inode *inode)
2227{
2228#ifdef CONFIG_F2FS_FS_ENCRYPTION
2229 file_set_encrypt(inode);
2230#endif
2231}
2232
2233static inline bool f2fs_bio_encrypted(struct bio *bio)
2234{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002235 return bio->bi_private != NULL;
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002236}
2237
2238static inline int f2fs_sb_has_crypto(struct super_block *sb)
2239{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002240 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002241}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002242
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002243static inline bool f2fs_may_encrypt(struct inode *inode)
2244{
2245#ifdef CONFIG_F2FS_FS_ENCRYPTION
Al Viro886f56f2015-12-05 03:56:06 -05002246 umode_t mode = inode->i_mode;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002247
2248 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2249#else
2250 return 0;
2251#endif
2252}
2253
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002254#ifndef CONFIG_F2FS_FS_ENCRYPTION
2255#define fscrypt_set_d_op(i)
2256#define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2257#define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2258#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2259#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2260#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2261#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2262#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2263#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2264#define fscrypt_process_policy fscrypt_notsupp_process_policy
2265#define fscrypt_get_policy fscrypt_notsupp_get_policy
2266#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2267#define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2268#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2269#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2270#define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2271#define fscrypt_free_filename fscrypt_notsupp_free_filename
2272#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2273#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2274#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2275#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2276#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002277#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002278#endif