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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
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700501static inline void __try_update_largest_extent(struct inode *inode,
502 struct extent_tree *et, struct extent_node *en)
Chao Yu4abd3f52015-09-22 21:07:47 +0800503{
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700504 if (en->ei.len > et->largest.len) {
Chao Yu4abd3f52015-09-22 21:07:47 +0800505 et->largest = en->ei;
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700506 mark_inode_dirty_sync(inode);
507 }
Chao Yu4abd3f52015-09-22 21:07:47 +0800508}
509
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900510struct f2fs_nm_info {
511 block_t nat_blkaddr; /* base disk address of NAT */
512 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900513 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900514 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900515 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800516 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Chao Yu2304cb02016-01-18 18:32:58 +0800517 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900518
519 /* NAT cache management */
520 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700521 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800522 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900523 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700524 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800525 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900526
527 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900528 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900529 struct list_head free_nid_list; /* a list for free nids */
530 spinlock_t free_nid_list_lock; /* protect free nid list */
531 unsigned int fcnt; /* the number of free node id */
532 struct mutex build_lock; /* lock for build free nids */
533
534 /* for checkpoint */
535 char *nat_bitmap; /* NAT bitmap pointer */
536 int bitmap_size; /* bitmap size */
537};
538
539/*
540 * this structure is used as one of function parameters.
541 * all the information are dedicated to a given direct node block determined
542 * by the data offset in a file.
543 */
544struct dnode_of_data {
545 struct inode *inode; /* vfs inode pointer */
546 struct page *inode_page; /* its inode page, NULL is possible */
547 struct page *node_page; /* cached direct node page */
548 nid_t nid; /* node id of the direct node block */
549 unsigned int ofs_in_node; /* data offset in the node page */
550 bool inode_page_locked; /* inode page is locked or not */
Jaegeuk Kim93bae092015-12-22 12:59:54 -0800551 bool node_changed; /* is node block changed */
Chao Yu3cf45742016-01-26 15:40:44 +0800552 char cur_level; /* level of hole node page */
553 char max_level; /* level of current page located */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900554 block_t data_blkaddr; /* block address of the node block */
555};
556
557static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
558 struct page *ipage, struct page *npage, nid_t nid)
559{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900560 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900561 dn->inode = inode;
562 dn->inode_page = ipage;
563 dn->node_page = npage;
564 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900565}
566
567/*
568 * For SIT manager
569 *
570 * By default, there are 6 active log areas across the whole main area.
571 * When considering hot and cold data separation to reduce cleaning overhead,
572 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
573 * respectively.
574 * In the current design, you should not change the numbers intentionally.
575 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
576 * logs individually according to the underlying devices. (default: 6)
577 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
578 * data and 8 for node logs.
579 */
580#define NR_CURSEG_DATA_TYPE (3)
581#define NR_CURSEG_NODE_TYPE (3)
582#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
583
584enum {
585 CURSEG_HOT_DATA = 0, /* directory entry blocks */
586 CURSEG_WARM_DATA, /* data blocks */
587 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
588 CURSEG_HOT_NODE, /* direct node blocks of directory files */
589 CURSEG_WARM_NODE, /* direct node blocks of normal files */
590 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800591 NO_CHECK_TYPE,
592 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900593};
594
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900595struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900596 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800597 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900598 int ret;
599};
600
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800601struct flush_cmd_control {
602 struct task_struct *f2fs_issue_flush; /* flush thread */
603 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800604 struct llist_head issue_list; /* list for command issue */
605 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800606};
607
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900608struct f2fs_sm_info {
609 struct sit_info *sit_info; /* whole segment information */
610 struct free_segmap_info *free_info; /* free segment information */
611 struct dirty_seglist_info *dirty_info; /* dirty segment information */
612 struct curseg_info *curseg_array; /* active segment information */
613
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900614 block_t seg0_blkaddr; /* block address of 0'th segment */
615 block_t main_blkaddr; /* start block address of main area */
616 block_t ssa_blkaddr; /* start block address of SSA area */
617
618 unsigned int segment_count; /* total # of segments */
619 unsigned int main_segments; /* # of segments in main area */
620 unsigned int reserved_segments; /* # of reserved segments */
621 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900622
623 /* a threshold to reclaim prefree segments */
624 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900625
626 /* for small discard management */
627 struct list_head discard_list; /* 4KB discard list */
628 int nr_discards; /* # of discards in the list */
629 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900630
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800631 /* for batched trimming */
632 unsigned int trim_sections; /* # of sections to trim */
633
Chao Yu184a5cd2014-09-04 18:13:01 +0800634 struct list_head sit_entry_set; /* sit entry set list */
635
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900636 unsigned int ipu_policy; /* in-place-update policy */
637 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700638 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900639
640 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800641 struct flush_cmd_control *cmd_control_info;
642
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900643};
644
645/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900646 * For superblock
647 */
648/*
649 * COUNT_TYPE for monitoring
650 *
651 * f2fs monitors the number of several block types such as on-writeback,
652 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
653 */
654enum count_type {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900655 F2FS_DIRTY_DENTS,
Chao Yuc227f912015-12-16 13:09:20 +0800656 F2FS_DIRTY_DATA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900657 F2FS_DIRTY_NODES,
658 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800659 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900660 NR_COUNT_TYPE,
661};
662
663/*
arter97e1c42042014-08-06 23:22:50 +0900664 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900665 * The available types are:
666 * DATA User data pages. It operates as async mode.
667 * NODE Node pages. It operates as async mode.
668 * META FS metadata pages such as SIT, NAT, CP.
669 * NR_PAGE_TYPE The number of page types.
670 * META_FLUSH Make sure the previous pages are written
671 * with waiting the bio's completion
672 * ... Only can be used with META.
673 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900674#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900675enum page_type {
676 DATA,
677 NODE,
678 META,
679 NR_PAGE_TYPE,
680 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700681 INMEM, /* the below types are used by tracepoints only. */
682 INMEM_DROP,
Chao Yu28bc1062016-02-06 14:40:34 +0800683 INMEM_REVOKE,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700684 IPU,
685 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900686};
687
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900688struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700689 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800690 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
691 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Chao Yu7a9d7542016-02-22 18:36:38 +0800692 block_t new_blkaddr; /* new block address to be written */
Chao Yu28bc1062016-02-06 14:40:34 +0800693 block_t old_blkaddr; /* old block address before Cow */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700694 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700695 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900696};
697
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900698#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900699struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900700 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900701 struct bio *bio; /* bios to merge */
702 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900703 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800704 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900705};
706
Chao Yuc227f912015-12-16 13:09:20 +0800707enum inode_type {
708 DIR_INODE, /* for dirty dir inode */
709 FILE_INODE, /* for dirty regular/symlink inode */
710 NR_INODE_TYPE,
711};
712
Chao Yu67298802014-11-18 11:18:36 +0800713/* for inner inode cache management */
714struct inode_management {
715 struct radix_tree_root ino_root; /* ino entry array */
716 spinlock_t ino_lock; /* for ino entry lock */
717 struct list_head ino_list; /* inode list head */
718 unsigned long ino_num; /* number of entries */
719};
720
Chao Yucaf00472015-01-28 17:48:42 +0800721/* For s_flag in struct f2fs_sb_info */
722enum {
723 SBI_IS_DIRTY, /* dirty flag for checkpoint */
724 SBI_IS_CLOSE, /* specify unmounting */
725 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
726 SBI_POR_DOING, /* recovery is doing or not */
Jaegeuk Kimdf728b02016-03-23 17:05:27 -0700727 SBI_NEED_SB_WRITE, /* need to recover superblock */
Chao Yucaf00472015-01-28 17:48:42 +0800728};
729
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800730enum {
731 CP_TIME,
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800732 REQ_TIME,
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800733 MAX_TIME,
734};
735
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700736#ifdef CONFIG_F2FS_FS_ENCRYPTION
737#define F2FS_KEY_DESC_PREFIX "f2fs:"
738#define F2FS_KEY_DESC_PREFIX_SIZE 5
739#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900740struct f2fs_sb_info {
741 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900742 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900743 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yue8240f62015-12-15 17:19:26 +0800744 int valid_super_block; /* valid super block no */
Chao Yucaf00472015-01-28 17:48:42 +0800745 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900746
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700747#ifdef CONFIG_F2FS_FS_ENCRYPTION
748 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
749 u8 key_prefix_size;
750#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900751 /* for node-related operations */
752 struct f2fs_nm_info *nm_info; /* node manager */
753 struct inode *node_inode; /* cache node blocks */
754
755 /* for segment-related operations */
756 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900757
758 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800759 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900760 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900761
762 /* for checkpoint */
763 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
764 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900765 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800766 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800767 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim5463e7c2015-04-21 10:40:54 -0700768 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900769 wait_queue_head_t cp_wait;
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800770 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
771 long interval_time[MAX_TIME]; /* to store thresholds */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900772
Chao Yu67298802014-11-18 11:18:36 +0800773 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700774
775 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800776 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900777
Chao Yuc227f912015-12-16 13:09:20 +0800778 /* for inode management */
779 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
780 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900781
Chao Yu13054c52015-02-05 17:52:58 +0800782 /* for extent tree cache */
783 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
784 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
785 struct list_head extent_list; /* lru list for shrinker */
786 spinlock_t extent_lock; /* locking extent lru list */
Jaegeuk Kim7441cce2015-12-21 19:20:15 -0800787 atomic_t total_ext_tree; /* extent tree count */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800788 struct list_head zombie_list; /* extent zombie tree list */
Jaegeuk Kim74fd8d92015-12-21 19:25:50 -0800789 atomic_t total_zombie_tree; /* extent zombie tree count */
Chao Yu13054c52015-02-05 17:52:58 +0800790 atomic_t total_ext_node; /* extent info count */
791
arter97e1c42042014-08-06 23:22:50 +0900792 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900793 unsigned int log_sectors_per_block; /* log2 sectors per block */
794 unsigned int log_blocksize; /* log2 block size */
795 unsigned int blocksize; /* block size */
796 unsigned int root_ino_num; /* root inode number*/
797 unsigned int node_ino_num; /* node inode number*/
798 unsigned int meta_ino_num; /* meta inode number*/
799 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
800 unsigned int blocks_per_seg; /* blocks per segment */
801 unsigned int segs_per_sec; /* segments per section */
802 unsigned int secs_per_zone; /* sections per zone */
803 unsigned int total_sections; /* total section count */
804 unsigned int total_node_count; /* total node block count */
805 unsigned int total_valid_node_count; /* valid node block count */
Chao Yue0afc4d2015-12-31 14:35:37 +0800806 loff_t max_file_blocks; /* max block index of file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900807 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900808 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900809
810 block_t user_block_count; /* # of user blocks */
811 block_t total_valid_block_count; /* # of valid blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700812 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900813 block_t last_valid_block_count; /* for recovery */
814 u32 s_next_generation; /* for NFS support */
Jaegeuk Kimf5730182016-05-17 16:23:36 -0700815 atomic_t nr_wb_bios; /* # of writeback bios */
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700816
817 /* # of pages, see count_type */
818 struct percpu_counter nr_pages[NR_COUNT_TYPE];
Jaegeuk Kim41382ec2016-05-16 11:06:50 -0700819 /* # of allocated blocks */
820 struct percpu_counter alloc_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900821
Jaegeuk Kim513c5f32016-05-16 11:42:32 -0700822 /* valid inode count */
823 struct percpu_counter total_valid_inode_count;
824
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900825 struct f2fs_mount_info mount_opt; /* mount options */
826
827 /* for cleaning operations */
828 struct mutex gc_mutex; /* mutex for GC */
829 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900830 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900831
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900832 /* maximum # of trials to find a victim segment for SSR and GC */
833 unsigned int max_victim_search;
834
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900835 /*
836 * for stat information.
837 * one is for the LFS mode, and the other is for the SSR mode.
838 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900839#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900840 struct f2fs_stat_info *stat_info; /* FS status information */
841 unsigned int segment_count[2]; /* # of allocated segments */
842 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900843 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800844 atomic64_t total_hit_ext; /* # of lookup extent cache */
845 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
846 atomic64_t read_hit_largest; /* # of hit largest extent node */
847 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800848 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800849 atomic_t inline_inode; /* # of inline_data inodes */
850 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900851 int bg_gc; /* background gc calls */
Chao Yu33fbd512015-12-17 17:14:44 +0800852 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900853#endif
854 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900855 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900856
857 /* For sysfs suppport */
858 struct kobject s_kobj;
859 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700860
861 /* For shrinker support */
862 struct list_head s_list;
863 struct mutex umount_mutex;
864 unsigned int shrinker_run_no;
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800865
866 /* For write statistics */
867 u64 sectors_written_start;
868 u64 kbytes_written;
Keith Mok43b65732016-03-02 12:04:24 -0800869
870 /* Reference to checksum algorithm driver via cryptoapi */
871 struct crypto_shash *s_chksum_driver;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900872};
873
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800874/* For write statistics. Suppose sector size is 512 bytes,
875 * and the return value is in kbytes. s is of struct f2fs_sb_info.
876 */
877#define BD_PART_WRITTEN(s) \
878(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
879 s->sectors_written_start) >> 1)
880
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800881static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
882{
883 sbi->last_time[type] = jiffies;
884}
885
886static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
887{
888 struct timespec ts = {sbi->interval_time[type], 0};
889 unsigned long interval = timespec_to_jiffies(&ts);
890
891 return time_after(jiffies, sbi->last_time[type] + interval);
892}
893
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800894static inline bool is_idle(struct f2fs_sb_info *sbi)
895{
896 struct block_device *bdev = sbi->sb->s_bdev;
897 struct request_queue *q = bdev_get_queue(bdev);
898 struct request_list *rl = &q->root_rl;
899
900 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
901 return 0;
902
903 return f2fs_time_over(sbi, REQ_TIME);
904}
905
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900906/*
907 * Inline functions
908 */
Keith Mok43b65732016-03-02 12:04:24 -0800909static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
910 unsigned int length)
911{
912 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
913 u32 *ctx = (u32 *)shash_desc_ctx(shash);
914 int err;
915
916 shash->tfm = sbi->s_chksum_driver;
917 shash->flags = 0;
918 *ctx = F2FS_SUPER_MAGIC;
919
920 err = crypto_shash_update(shash, address, length);
921 BUG_ON(err);
922
923 return *ctx;
924}
925
926static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
927 void *buf, size_t buf_size)
928{
929 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
930}
931
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900932static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
933{
934 return container_of(inode, struct f2fs_inode_info, vfs_inode);
935}
936
937static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
938{
939 return sb->s_fs_info;
940}
941
Jaegeuk Kim40813632014-09-02 15:31:18 -0700942static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
943{
944 return F2FS_SB(inode->i_sb);
945}
946
947static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
948{
949 return F2FS_I_SB(mapping->host);
950}
951
952static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
953{
954 return F2FS_M_SB(page->mapping);
955}
956
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900957static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
958{
959 return (struct f2fs_super_block *)(sbi->raw_super);
960}
961
962static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
963{
964 return (struct f2fs_checkpoint *)(sbi->ckpt);
965}
966
Gu Zheng45590712013-07-15 17:57:38 +0800967static inline struct f2fs_node *F2FS_NODE(struct page *page)
968{
969 return (struct f2fs_node *)page_address(page);
970}
971
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900972static inline struct f2fs_inode *F2FS_INODE(struct page *page)
973{
974 return &((struct f2fs_node *)page_address(page))->i;
975}
976
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900977static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
978{
979 return (struct f2fs_nm_info *)(sbi->nm_info);
980}
981
982static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
983{
984 return (struct f2fs_sm_info *)(sbi->sm_info);
985}
986
987static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
988{
989 return (struct sit_info *)(SM_I(sbi)->sit_info);
990}
991
992static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
993{
994 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
995}
996
997static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
998{
999 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1000}
1001
Gu Zheng9df27d92014-01-20 18:37:04 +08001002static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1003{
1004 return sbi->meta_inode->i_mapping;
1005}
1006
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +09001007static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1008{
1009 return sbi->node_inode->i_mapping;
1010}
1011
Chao Yucaf00472015-01-28 17:48:42 +08001012static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001013{
Chao Yucaf00472015-01-28 17:48:42 +08001014 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001015}
1016
Chao Yucaf00472015-01-28 17:48:42 +08001017static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001018{
Chao Yucaf00472015-01-28 17:48:42 +08001019 sbi->s_flag |= (0x01 << type);
1020}
1021
1022static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1023{
1024 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001025}
1026
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001027static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1028{
1029 return le64_to_cpu(cp->checkpoint_ver);
1030}
1031
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001032static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1033{
1034 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1035 return ckpt_flags & f;
1036}
1037
1038static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1039{
1040 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1041 ckpt_flags |= f;
1042 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1043}
1044
1045static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1046{
1047 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1048 ckpt_flags &= (~f);
1049 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1050}
1051
Gu Zhenge4795562013-09-27 18:08:30 +08001052static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001053{
Gu Zhenge4795562013-09-27 18:08:30 +08001054 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001055}
1056
Gu Zhenge4795562013-09-27 18:08:30 +08001057static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001058{
Gu Zhenge4795562013-09-27 18:08:30 +08001059 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001060}
1061
Gu Zhenge4795562013-09-27 18:08:30 +08001062static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001063{
Yang Shi59692b72016-02-26 16:25:25 -08001064 down_write(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001065}
1066
Gu Zhenge4795562013-09-27 18:08:30 +08001067static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001068{
Gu Zhenge4795562013-09-27 18:08:30 +08001069 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001070}
1071
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001072static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1073{
1074 int reason = CP_SYNC;
1075
1076 if (test_opt(sbi, FASTBOOT))
1077 reason = CP_FASTBOOT;
1078 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1079 reason = CP_UMOUNT;
1080 return reason;
1081}
1082
1083static inline bool __remain_node_summaries(int reason)
1084{
1085 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1086}
1087
1088static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1089{
1090 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1091 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1092}
1093
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001094/*
1095 * Check whether the given nid is within node id range.
1096 */
Namjae Jeon064e0822013-03-17 17:27:20 +09001097static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001098{
Chao Yud6b7d4b2014-06-12 13:23:41 +08001099 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1100 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +08001101 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001102 return -EINVAL;
1103 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001104}
1105
1106#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1107
1108/*
1109 * Check whether the inode has blocks or not
1110 */
1111static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1112{
1113 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001114 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001115 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001116 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001117}
1118
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001119static inline bool f2fs_has_xattr_block(unsigned int ofs)
1120{
1121 return ofs == XATTR_NODE_OFFSET;
1122}
1123
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001124static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001125static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
Chao Yu46008c62016-05-09 19:56:30 +08001126 struct inode *inode, blkcnt_t *count)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001127{
1128 block_t valid_block_count;
1129
1130 spin_lock(&sbi->stat_lock);
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001131#ifdef CONFIG_F2FS_FAULT_INJECTION
1132 if (time_to_inject(FAULT_BLOCK)) {
1133 spin_unlock(&sbi->stat_lock);
1134 return false;
1135 }
1136#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001137 valid_block_count =
Chao Yu46008c62016-05-09 19:56:30 +08001138 sbi->total_valid_block_count + (block_t)(*count);
Chao Yucfb271d2013-12-05 17:15:22 +08001139 if (unlikely(valid_block_count > sbi->user_block_count)) {
Chao Yu46008c62016-05-09 19:56:30 +08001140 *count = sbi->user_block_count - sbi->total_valid_block_count;
1141 if (!*count) {
1142 spin_unlock(&sbi->stat_lock);
1143 return false;
1144 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001145 }
Chao Yu46008c62016-05-09 19:56:30 +08001146 /* *count can be recalculated */
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001147 f2fs_i_blocks_write(inode, *count, true);
Chao Yu46008c62016-05-09 19:56:30 +08001148 sbi->total_valid_block_count =
1149 sbi->total_valid_block_count + (block_t)(*count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001150 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001151
1152 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001153 return true;
1154}
1155
Gu Zhengda19b0d2013-11-19 18:03:27 +08001156static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001157 struct inode *inode,
1158 blkcnt_t count)
1159{
1160 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001161 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1162 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001163 f2fs_i_blocks_write(inode, count, false);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001164 sbi->total_valid_block_count -= (block_t)count;
1165 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001166}
1167
1168static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1169{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001170 percpu_counter_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001171 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001172}
1173
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001174static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001175{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001176 percpu_counter_inc(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001177 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1178 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001179}
1180
1181static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1182{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001183 percpu_counter_dec(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001184}
1185
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001186static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001187{
Chao Yu5ac9f362015-06-29 18:14:10 +08001188 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1189 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001190 return;
1191
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001192 percpu_counter_dec(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001193 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1194 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001195}
1196
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001197static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001198{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001199 return percpu_counter_sum_positive(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001200}
1201
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001202static inline s64 get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001203{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001204 return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001205}
1206
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001207static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1208{
Chao Yu3519e3f2015-12-01 11:56:52 +08001209 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001210 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1211 sbi->log_blocks_per_seg;
1212
1213 return segs / sbi->segs_per_sec;
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001214}
1215
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001216static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1217{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001218 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001219}
1220
1221static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1222{
1223 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1224
1225 /* return NAT or SIT bitmap */
1226 if (flag == NAT_BITMAP)
1227 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1228 else if (flag == SIT_BITMAP)
1229 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1230
1231 return 0;
1232}
1233
Wanpeng Li55141482015-02-26 07:57:20 +08001234static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1235{
1236 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1237}
1238
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001239static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1240{
1241 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001242 int offset;
1243
Wanpeng Li55141482015-02-26 07:57:20 +08001244 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001245 if (flag == NAT_BITMAP)
1246 return &ckpt->sit_nat_version_bitmap;
1247 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001248 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001249 } else {
1250 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001251 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001252 return &ckpt->sit_nat_version_bitmap + offset;
1253 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001254}
1255
1256static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1257{
1258 block_t start_addr;
1259 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001260 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001261
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001262 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001263
1264 /*
1265 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001266 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001267 */
1268 if (!(ckpt_version & 1))
1269 start_addr += sbi->blocks_per_seg;
1270
1271 return start_addr;
1272}
1273
1274static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1275{
1276 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1277}
1278
1279static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001280 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001281{
1282 block_t valid_block_count;
1283 unsigned int valid_node_count;
1284
1285 spin_lock(&sbi->stat_lock);
1286
Gu Zhengef86d702013-11-19 18:03:38 +08001287 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001288 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001289 spin_unlock(&sbi->stat_lock);
1290 return false;
1291 }
1292
Gu Zhengef86d702013-11-19 18:03:38 +08001293 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001294 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001295 spin_unlock(&sbi->stat_lock);
1296 return false;
1297 }
1298
1299 if (inode)
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001300 f2fs_i_blocks_write(inode, 1, true);
Gu Zhengef86d702013-11-19 18:03:38 +08001301
Gu Zhengef86d702013-11-19 18:03:38 +08001302 sbi->total_valid_node_count++;
1303 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001304 spin_unlock(&sbi->stat_lock);
1305
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001306 percpu_counter_inc(&sbi->alloc_valid_block_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001307 return true;
1308}
1309
1310static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001311 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001312{
1313 spin_lock(&sbi->stat_lock);
1314
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001315 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1316 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1317 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001318
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001319 f2fs_i_blocks_write(inode, 1, false);
Gu Zhengef86d702013-11-19 18:03:38 +08001320 sbi->total_valid_node_count--;
1321 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001322
1323 spin_unlock(&sbi->stat_lock);
1324}
1325
1326static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1327{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001328 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001329}
1330
1331static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1332{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001333 percpu_counter_inc(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001334}
1335
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001336static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001337{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001338 percpu_counter_dec(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001339}
1340
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001341static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001342{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001343 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001344}
1345
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001346static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1347 pgoff_t index, bool for_write)
1348{
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -07001349#ifdef CONFIG_F2FS_FAULT_INJECTION
1350 struct page *page = find_lock_page(mapping, index);
1351 if (page)
1352 return page;
1353
1354 if (time_to_inject(FAULT_PAGE_ALLOC))
1355 return NULL;
1356#endif
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001357 if (!for_write)
1358 return grab_cache_page(mapping, index);
1359 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1360}
1361
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001362static inline void f2fs_copy_page(struct page *src, struct page *dst)
1363{
1364 char *src_kaddr = kmap(src);
1365 char *dst_kaddr = kmap(dst);
1366
1367 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1368 kunmap(dst);
1369 kunmap(src);
1370}
1371
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001372static inline void f2fs_put_page(struct page *page, int unlock)
1373{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001374 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001375 return;
1376
1377 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001378 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001379 unlock_page(page);
1380 }
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001381 put_page(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001382}
1383
1384static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1385{
1386 if (dn->node_page)
1387 f2fs_put_page(dn->node_page, 1);
1388 if (dn->inode_page && dn->node_page != dn->inode_page)
1389 f2fs_put_page(dn->inode_page, 0);
1390 dn->node_page = NULL;
1391 dn->inode_page = NULL;
1392}
1393
1394static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001395 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001396{
Gu Zhenge8512d22014-03-07 18:43:28 +08001397 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001398}
1399
Gu Zheng7bd59382013-10-22 14:52:26 +08001400static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1401 gfp_t flags)
1402{
1403 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001404
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001405 entry = kmem_cache_alloc(cachep, flags);
1406 if (!entry)
1407 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001408 return entry;
1409}
1410
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001411static inline struct bio *f2fs_bio_alloc(int npages)
1412{
1413 struct bio *bio;
1414
1415 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001416 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001417 if (!bio)
1418 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001419 return bio;
1420}
1421
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001422static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1423 unsigned long index, void *item)
1424{
1425 while (radix_tree_insert(root, index, item))
1426 cond_resched();
1427}
1428
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001429#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1430
1431static inline bool IS_INODE(struct page *page)
1432{
Gu Zheng45590712013-07-15 17:57:38 +08001433 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001434 return RAW_IS_INODE(p);
1435}
1436
1437static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1438{
1439 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1440}
1441
1442static inline block_t datablock_addr(struct page *node_page,
1443 unsigned int offset)
1444{
1445 struct f2fs_node *raw_node;
1446 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001447 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001448 addr_array = blkaddr_in_node(raw_node);
1449 return le32_to_cpu(addr_array[offset]);
1450}
1451
1452static inline int f2fs_test_bit(unsigned int nr, char *addr)
1453{
1454 int mask;
1455
1456 addr += (nr >> 3);
1457 mask = 1 << (7 - (nr & 0x07));
1458 return mask & *addr;
1459}
1460
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001461static inline void f2fs_set_bit(unsigned int nr, char *addr)
1462{
1463 int mask;
1464
1465 addr += (nr >> 3);
1466 mask = 1 << (7 - (nr & 0x07));
1467 *addr |= mask;
1468}
1469
1470static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1471{
1472 int mask;
1473
1474 addr += (nr >> 3);
1475 mask = 1 << (7 - (nr & 0x07));
1476 *addr &= ~mask;
1477}
1478
Gu Zheng52aca072014-10-20 17:45:51 +08001479static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001480{
1481 int mask;
1482 int ret;
1483
1484 addr += (nr >> 3);
1485 mask = 1 << (7 - (nr & 0x07));
1486 ret = mask & *addr;
1487 *addr |= mask;
1488 return ret;
1489}
1490
Gu Zheng52aca072014-10-20 17:45:51 +08001491static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001492{
1493 int mask;
1494 int ret;
1495
1496 addr += (nr >> 3);
1497 mask = 1 << (7 - (nr & 0x07));
1498 ret = mask & *addr;
1499 *addr &= ~mask;
1500 return ret;
1501}
1502
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001503static inline void f2fs_change_bit(unsigned int nr, char *addr)
1504{
1505 int mask;
1506
1507 addr += (nr >> 3);
1508 mask = 1 << (7 - (nr & 0x07));
1509 *addr ^= mask;
1510}
1511
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001512/* used for f2fs_inode_info->flags */
1513enum {
1514 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001515 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001516 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001517 FI_INC_LINK, /* need to increment i_nlink */
1518 FI_ACL_MODE, /* indicate acl mode */
1519 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001520 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001521 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001522 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001523 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001524 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001525 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001526 FI_APPEND_WRITE, /* inode has appended data */
1527 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001528 FI_NEED_IPU, /* used for ipu per file */
1529 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001530 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001531 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001532 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001533 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001534 FI_INLINE_DOTS, /* indicate inline dot dentries */
Chao Yud323d002015-10-27 09:53:45 +08001535 FI_DO_DEFRAG, /* indicate defragment is running */
Chao Yuc227f912015-12-16 13:09:20 +08001536 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001537};
1538
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001539static inline void __mark_inode_dirty_flag(struct inode *inode,
1540 int flag, bool set)
1541{
1542 switch (flag) {
1543 case FI_INLINE_XATTR:
1544 case FI_INLINE_DATA:
1545 case FI_INLINE_DENTRY:
1546 if (set)
1547 return;
1548 case FI_DATA_EXIST:
1549 case FI_INLINE_DOTS:
1550 mark_inode_dirty_sync(inode);
1551 }
1552}
1553
Jaegeuk Kim91942322016-05-20 10:13:22 -07001554static inline void set_inode_flag(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001555{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001556 if (!test_bit(flag, &F2FS_I(inode)->flags))
1557 set_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001558 __mark_inode_dirty_flag(inode, flag, true);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001559}
1560
Jaegeuk Kim91942322016-05-20 10:13:22 -07001561static inline int is_inode_flag_set(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001562{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001563 return test_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001564}
1565
Jaegeuk Kim91942322016-05-20 10:13:22 -07001566static inline void clear_inode_flag(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001567{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001568 if (test_bit(flag, &F2FS_I(inode)->flags))
1569 clear_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001570 __mark_inode_dirty_flag(inode, flag, false);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001571}
1572
Jaegeuk Kim91942322016-05-20 10:13:22 -07001573static inline void set_acl_inode(struct inode *inode, umode_t mode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001574{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001575 F2FS_I(inode)->i_acl_mode = mode;
1576 set_inode_flag(inode, FI_ACL_MODE);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001577 mark_inode_dirty_sync(inode);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001578}
1579
Jaegeuk Kima1961242016-05-20 09:43:20 -07001580static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1581{
1582 if (inc)
1583 inc_nlink(inode);
1584 else
1585 drop_nlink(inode);
1586 mark_inode_dirty_sync(inode);
1587}
1588
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001589static inline void f2fs_i_blocks_write(struct inode *inode,
1590 blkcnt_t diff, bool add)
1591{
1592 inode->i_blocks = add ? inode->i_blocks + diff :
1593 inode->i_blocks - diff;
1594 mark_inode_dirty_sync(inode);
1595}
1596
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001597static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1598{
1599 if (i_size_read(inode) == i_size)
1600 return;
1601
1602 i_size_write(inode, i_size);
1603 mark_inode_dirty_sync(inode);
1604}
1605
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001606static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1607{
1608 F2FS_I(inode)->i_current_depth = depth;
1609 mark_inode_dirty_sync(inode);
1610}
1611
1612static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1613{
1614 F2FS_I(inode)->i_xattr_nid = xnid;
1615 mark_inode_dirty_sync(inode);
1616}
1617
1618static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1619{
1620 F2FS_I(inode)->i_pino = pino;
1621 mark_inode_dirty_sync(inode);
1622}
1623
Jaegeuk Kim91942322016-05-20 10:13:22 -07001624static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001625{
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001626 struct f2fs_inode_info *fi = F2FS_I(inode);
1627
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001628 if (ri->i_inline & F2FS_INLINE_XATTR)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001629 set_bit(FI_INLINE_XATTR, &fi->flags);
Huajun Li1001b342013-11-10 23:13:16 +08001630 if (ri->i_inline & F2FS_INLINE_DATA)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001631 set_bit(FI_INLINE_DATA, &fi->flags);
Chao Yu34d67de2014-09-24 18:15:19 +08001632 if (ri->i_inline & F2FS_INLINE_DENTRY)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001633 set_bit(FI_INLINE_DENTRY, &fi->flags);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001634 if (ri->i_inline & F2FS_DATA_EXIST)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001635 set_bit(FI_DATA_EXIST, &fi->flags);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001636 if (ri->i_inline & F2FS_INLINE_DOTS)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001637 set_bit(FI_INLINE_DOTS, &fi->flags);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001638}
1639
Jaegeuk Kim91942322016-05-20 10:13:22 -07001640static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001641{
1642 ri->i_inline = 0;
1643
Jaegeuk Kim91942322016-05-20 10:13:22 -07001644 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001645 ri->i_inline |= F2FS_INLINE_XATTR;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001646 if (is_inode_flag_set(inode, FI_INLINE_DATA))
Huajun Li1001b342013-11-10 23:13:16 +08001647 ri->i_inline |= F2FS_INLINE_DATA;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001648 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
Chao Yu34d67de2014-09-24 18:15:19 +08001649 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001650 if (is_inode_flag_set(inode, FI_DATA_EXIST))
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001651 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001652 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001653 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001654}
1655
Chao Yu987c7c32014-03-12 15:59:03 +08001656static inline int f2fs_has_inline_xattr(struct inode *inode)
1657{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001658 return is_inode_flag_set(inode, FI_INLINE_XATTR);
Chao Yu987c7c32014-03-12 15:59:03 +08001659}
1660
Chao Yu81ca7352016-01-26 15:39:35 +08001661static inline unsigned int addrs_per_inode(struct inode *inode)
Jaegeuk Kimde936532013-08-12 21:08:03 +09001662{
Chao Yu81ca7352016-01-26 15:39:35 +08001663 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001664 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1665 return DEF_ADDRS_PER_INODE;
1666}
1667
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001668static inline void *inline_xattr_addr(struct page *page)
1669{
Chao Yu695fd1e2014-02-27 19:52:21 +08001670 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001671 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1672 F2FS_INLINE_XATTR_ADDRS]);
1673}
1674
1675static inline int inline_xattr_size(struct inode *inode)
1676{
Chao Yu987c7c32014-03-12 15:59:03 +08001677 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001678 return F2FS_INLINE_XATTR_ADDRS << 2;
1679 else
1680 return 0;
1681}
1682
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001683static inline int f2fs_has_inline_data(struct inode *inode)
1684{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001685 return is_inode_flag_set(inode, FI_INLINE_DATA);
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001686}
1687
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001688static inline void f2fs_clear_inline_inode(struct inode *inode)
1689{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001690 clear_inode_flag(inode, FI_INLINE_DATA);
1691 clear_inode_flag(inode, FI_DATA_EXIST);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001692}
1693
1694static inline int f2fs_exist_data(struct inode *inode)
1695{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001696 return is_inode_flag_set(inode, FI_DATA_EXIST);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001697}
1698
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001699static inline int f2fs_has_inline_dots(struct inode *inode)
1700{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001701 return is_inode_flag_set(inode, FI_INLINE_DOTS);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001702}
1703
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001704static inline bool f2fs_is_atomic_file(struct inode *inode)
1705{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001706 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001707}
1708
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001709static inline bool f2fs_is_volatile_file(struct inode *inode)
1710{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001711 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001712}
1713
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001714static inline bool f2fs_is_first_block_written(struct inode *inode)
1715{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001716 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001717}
1718
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001719static inline bool f2fs_is_drop_cache(struct inode *inode)
1720{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001721 return is_inode_flag_set(inode, FI_DROP_CACHE);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001722}
1723
Huajun Li1001b342013-11-10 23:13:16 +08001724static inline void *inline_data_addr(struct page *page)
1725{
Chao Yu695fd1e2014-02-27 19:52:21 +08001726 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001727 return (void *)&(ri->i_addr[1]);
1728}
1729
Chao Yu34d67de2014-09-24 18:15:19 +08001730static inline int f2fs_has_inline_dentry(struct inode *inode)
1731{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001732 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
Chao Yu34d67de2014-09-24 18:15:19 +08001733}
1734
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001735static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1736{
1737 if (!f2fs_has_inline_dentry(dir))
1738 kunmap(page);
1739}
1740
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001741static inline int is_file(struct inode *inode, int type)
1742{
1743 return F2FS_I(inode)->i_advise & type;
1744}
1745
1746static inline void set_file(struct inode *inode, int type)
1747{
1748 F2FS_I(inode)->i_advise |= type;
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001749 mark_inode_dirty_sync(inode);
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001750}
1751
1752static inline void clear_file(struct inode *inode, int type)
1753{
1754 F2FS_I(inode)->i_advise &= ~type;
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001755 mark_inode_dirty_sync(inode);
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001756}
1757
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001758static inline int f2fs_readonly(struct super_block *sb)
1759{
1760 return sb->s_flags & MS_RDONLY;
1761}
1762
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001763static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1764{
1765 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1766}
1767
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001768static inline bool is_dot_dotdot(const struct qstr *str)
1769{
1770 if (str->len == 1 && str->name[0] == '.')
1771 return true;
1772
1773 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1774 return true;
1775
1776 return false;
1777}
1778
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001779static inline bool f2fs_may_extent_tree(struct inode *inode)
1780{
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001781 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
Jaegeuk Kim91942322016-05-20 10:13:22 -07001782 is_inode_flag_set(inode, FI_NO_EXTENT))
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001783 return false;
1784
Al Viro886f56f2015-12-05 03:56:06 -05001785 return S_ISREG(inode->i_mode);
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001786}
1787
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001788static inline void *f2fs_kmalloc(size_t size, gfp_t flags)
1789{
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -07001790#ifdef CONFIG_F2FS_FAULT_INJECTION
1791 if (time_to_inject(FAULT_KMALLOC))
1792 return NULL;
1793#endif
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001794 return kmalloc(size, flags);
1795}
1796
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001797static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1798{
1799 void *ret;
1800
1801 ret = kmalloc(size, flags | __GFP_NOWARN);
1802 if (!ret)
1803 ret = __vmalloc(size, flags, PAGE_KERNEL);
1804 return ret;
1805}
1806
1807static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1808{
1809 void *ret;
1810
1811 ret = kzalloc(size, flags | __GFP_NOWARN);
1812 if (!ret)
1813 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1814 return ret;
1815}
1816
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001817#define get_inode_mode(i) \
Jaegeuk Kim91942322016-05-20 10:13:22 -07001818 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001819 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1820
Chao Yu267378d2014-04-23 14:10:24 +08001821/* get offset of first page in next direct node */
Chao Yu81ca7352016-01-26 15:39:35 +08001822#define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1823 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1824 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1825 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
Chao Yu267378d2014-04-23 14:10:24 +08001826
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001827/*
1828 * file.c
1829 */
1830int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1831void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001832int truncate_blocks(struct inode *, u64, bool);
Chao Yub0154892015-08-24 17:39:42 +08001833int f2fs_truncate(struct inode *, bool);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001834int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001835int f2fs_setattr(struct dentry *, struct iattr *);
1836int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001837int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001838long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001839long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001840
1841/*
1842 * inode.c
1843 */
1844void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001845struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001846int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -08001847int update_inode(struct inode *, struct page *);
1848int update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001849int f2fs_write_inode(struct inode *, struct writeback_control *);
1850void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001851void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001852
1853/*
1854 * namei.c
1855 */
1856struct dentry *f2fs_get_parent(struct dentry *child);
1857
1858/*
1859 * dir.c
1860 */
Chao Yudbeacf02014-09-24 18:17:04 +08001861extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001862void set_de_type(struct f2fs_dir_entry *, umode_t);
Chao Yu675f10b2016-02-22 18:29:18 +08001863unsigned char get_de_type(struct f2fs_dir_entry *);
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001864struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001865 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001866bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001867 unsigned int, struct fscrypt_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001868void do_make_empty_dir(struct inode *, struct inode *,
1869 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001870struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001871 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001872void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001873int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001874void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001875struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1876 struct page **);
1877struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1878ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1879void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1880 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001881int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001882void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001883 const struct qstr *, f2fs_hash_t , unsigned int);
Chao Yu675f10b2016-02-22 18:29:18 +08001884int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1885 struct inode *, nid_t, umode_t);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001886int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1887 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001888void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1889 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001890int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001891bool f2fs_empty_dir(struct inode *);
1892
Al Virob7f7a5e2013-01-25 16:15:43 -05001893static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1894{
David Howells2b0143b2015-03-17 22:25:59 +00001895 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001896 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001897}
1898
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001899/*
1900 * super.c
1901 */
Chao Yuc5bda1c2015-06-08 13:28:03 +08001902int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001903int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001904extern __printf(3, 4)
1905void f2fs_msg(struct super_block *, const char *, const char *, ...);
Shawn Lin984ec632016-02-17 11:26:32 +08001906int sanity_check_ckpt(struct f2fs_sb_info *sbi);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001907
1908/*
1909 * hash.c
1910 */
Gu Zhengeee61602014-06-24 18:21:23 +08001911f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001912
1913/*
1914 * node.c
1915 */
1916struct dnode_of_data;
1917struct node_info;
1918
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001919bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001920int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001921bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001922bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001923void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
Chao Yu3cf45742016-01-26 15:40:44 +08001924pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001925int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1926int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001927int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001928int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001929int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001930struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001931struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001932void ra_node_page(struct f2fs_sb_info *, nid_t);
1933struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1934struct page *get_node_page_ra(struct page *, int);
1935void sync_inode_page(struct dnode_of_data *);
Chao Yuda011cc2016-04-27 21:40:15 +08001936void move_node_page(struct page *, int);
Jaegeuk Kim608514d2016-04-15 09:43:17 -07001937int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *,
1938 bool);
Jaegeuk Kim52681372016-04-13 16:24:44 -07001939int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001940bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1941void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1942void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001943int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001944void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001945void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001946int recover_inode_page(struct f2fs_sb_info *, struct page *);
1947int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1948 struct f2fs_summary_block *);
1949void flush_nat_entries(struct f2fs_sb_info *);
1950int build_node_manager(struct f2fs_sb_info *);
1951void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001952int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001953void destroy_node_manager_caches(void);
1954
1955/*
1956 * segment.c
1957 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001958void register_inmem_page(struct inode *, struct page *);
Chao Yu29b96b52016-02-06 14:38:29 +08001959void drop_inmem_pages(struct inode *);
1960int commit_inmem_pages(struct inode *);
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001961void f2fs_balance_fs(struct f2fs_sb_info *, bool);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001962void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001963int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001964int create_flush_cmd_control(struct f2fs_sb_info *);
1965void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001966void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001967bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001968void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001969void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001970void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001971bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001972int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001973void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001974int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001975struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08001976void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001977void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07001978void write_node_page(unsigned int, struct f2fs_io_info *);
1979void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
1980void rewrite_data_page(struct f2fs_io_info *);
Chao Yu4356e482016-02-23 17:52:43 +08001981void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
1982 block_t, block_t, bool, bool);
Chao Yu528e3452015-05-28 19:15:35 +08001983void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
Chao Yu28bc1062016-02-06 14:40:34 +08001984 block_t, block_t, unsigned char, bool, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001985void allocate_data_block(struct f2fs_sb_info *, struct page *,
1986 block_t, block_t *, struct f2fs_summary *, int);
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08001987void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
Chao Yu08b39fb2015-10-08 13:27:34 +08001988void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001989void write_data_summaries(struct f2fs_sb_info *, block_t);
1990void write_node_summaries(struct f2fs_sb_info *, block_t);
Chao Yudfc08a12016-02-14 18:50:40 +08001991int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001992void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001993int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001994void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001995int __init create_segment_manager_caches(void);
1996void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001997
1998/*
1999 * checkpoint.c
2000 */
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07002001void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002002struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2003struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08002004struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08002005bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08002006int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08002007void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002008long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Chao Yua49324f2015-12-15 13:29:47 +08002009void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2010void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim74ef9242016-05-02 22:09:56 -07002011void release_ino_entry(struct f2fs_sb_info *, bool);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07002012bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09002013int acquire_orphan_inode(struct f2fs_sb_info *);
2014void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002015void add_orphan_inode(struct f2fs_sb_info *, nid_t);
2016void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08002017int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002018int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07002019void update_dirty_page(struct inode *, struct page *);
Chao Yuc227f912015-12-16 13:09:20 +08002020void remove_dirty_inode(struct inode *);
Chao Yu6d5a1492015-12-24 18:04:56 +08002021int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
Chao Yuc34f42e2015-12-23 17:50:30 +08002022int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07002023void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09002024int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002025void destroy_checkpoint_caches(void);
2026
2027/*
2028 * data.c
2029 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09002030void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Chao Yu0c3a5792016-01-18 18:28:11 +08002031void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2032 struct page *, nid_t, enum page_type, int);
Chao Yu406657d2016-02-24 17:17:55 +08002033void f2fs_flush_merged_bios(struct f2fs_sb_info *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002034int f2fs_submit_page_bio(struct f2fs_io_info *);
2035void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08002036void set_data_blkaddr(struct dnode_of_data *);
Chao Yuf28b3432016-02-24 17:16:47 +08002037void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
Chao Yu46008c62016-05-09 19:56:30 +08002038int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002039int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08002040int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kimb439b102016-02-03 13:09:09 -08002041ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
Huajun Lib6009652013-11-10 23:13:18 +08002042int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07002043struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07002044struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07002045struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09002046struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002047int do_write_data_page(struct f2fs_io_info *);
Chao Yud323d002015-10-27 09:53:45 +08002048int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09002049int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08002050void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2051int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002052
2053/*
2054 * gc.c
2055 */
2056int start_gc_thread(struct f2fs_sb_info *);
2057void stop_gc_thread(struct f2fs_sb_info *);
Chao Yu81ca7352016-01-26 15:39:35 +08002058block_t start_bidx_of_node(unsigned int, struct inode *);
Chao Yud530d4d2015-10-05 22:22:44 +08002059int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002060void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002061
2062/*
2063 * recovery.c
2064 */
Jaegeuk Kim6781eab2016-03-23 16:12:58 -07002065int recover_fsync_data(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002066bool space_for_roll_forward(struct f2fs_sb_info *);
2067
2068/*
2069 * debug.c
2070 */
2071#ifdef CONFIG_F2FS_STAT_FS
2072struct f2fs_stat_info {
2073 struct list_head stat_list;
2074 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002075 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2076 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08002077 unsigned long long hit_largest, hit_cached, hit_rbtree;
2078 unsigned long long hit_total, total_ext;
Jaegeuk Kimc00ba552015-12-31 15:24:14 -08002079 int ext_tree, zombie_tree, ext_node;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002080 s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages;
2081 unsigned int ndirty_dirs, ndirty_files;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08002082 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002083 int total_count, utilization;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002084 int bg_gc, wb_bios;
Jaegeuk Kim652be552016-05-10 19:13:50 -07002085 int inline_xattr, inline_inode, inline_dir, orphans;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002086 unsigned int valid_count, valid_node_count, valid_inode_count;
2087 unsigned int bimodal, avg_vblocks;
2088 int util_free, util_valid, util_invalid;
2089 int rsvd_segs, overp_segs;
2090 int dirty_count, node_pages, meta_pages;
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002091 int prefree_count, call_count, cp_count, bg_cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002092 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09002093 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002094 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09002095 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002096 int curseg[NR_CURSEG_TYPE];
2097 int cursec[NR_CURSEG_TYPE];
2098 int curzone[NR_CURSEG_TYPE];
2099
2100 unsigned int segment_count[2];
2101 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09002102 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08002103 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002104};
2105
Gu Zheng963d4f72013-07-12 14:47:11 +08002106static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2107{
Chris Fries6c311ec2014-01-17 14:44:39 -06002108 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08002109}
2110
Changman Lee942e0be2014-02-13 15:12:29 +09002111#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002112#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002113#define stat_inc_call_count(si) ((si)->call_count++)
2114#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
Chao Yu33fbd512015-12-17 17:14:44 +08002115#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2116#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
Chao Yu5b7ee372015-09-30 17:38:48 +08002117#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2118#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2119#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2120#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08002121#define stat_inc_inline_xattr(inode) \
2122 do { \
2123 if (f2fs_has_inline_xattr(inode)) \
2124 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2125 } while (0)
2126#define stat_dec_inline_xattr(inode) \
2127 do { \
2128 if (f2fs_has_inline_xattr(inode)) \
2129 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2130 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002131#define stat_inc_inline_inode(inode) \
2132 do { \
2133 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002134 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002135 } while (0)
2136#define stat_dec_inline_inode(inode) \
2137 do { \
2138 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002139 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002140 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002141#define stat_inc_inline_dir(inode) \
2142 do { \
2143 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002144 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002145 } while (0)
2146#define stat_dec_inline_dir(inode) \
2147 do { \
2148 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002149 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002150 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002151#define stat_inc_seg_type(sbi, curseg) \
2152 ((sbi)->segment_count[(curseg)->alloc_type]++)
2153#define stat_inc_block_count(sbi, curseg) \
2154 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09002155#define stat_inc_inplace_blocks(sbi) \
2156 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09002157#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002158 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002159 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002160 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002161 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002162 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002163 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2164 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002165 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002166 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2167 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002168 } while (0)
2169
2170#define stat_inc_tot_blk_count(si, blks) \
2171 (si->tot_blks += (blks))
2172
Changman Leee1235982014-12-23 08:37:39 +09002173#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002174 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002175 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002176 stat_inc_tot_blk_count(si, blks); \
2177 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002178 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002179 } while (0)
2180
Changman Leee1235982014-12-23 08:37:39 +09002181#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002182 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002183 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002184 stat_inc_tot_blk_count(si, blks); \
2185 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002186 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002187 } while (0)
2188
2189int f2fs_build_stats(struct f2fs_sb_info *);
2190void f2fs_destroy_stats(struct f2fs_sb_info *);
Chao Yu787c7b8c2015-10-29 09:13:04 +08002191int __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09002192void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002193#else
Changman Lee942e0be2014-02-13 15:12:29 +09002194#define stat_inc_cp_count(si)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002195#define stat_inc_bg_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002196#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002197#define stat_inc_bggc_count(si)
Chao Yu33fbd512015-12-17 17:14:44 +08002198#define stat_inc_dirty_inode(sbi, type)
2199#define stat_dec_dirty_inode(sbi, type)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002200#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08002201#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002202#define stat_inc_largest_node_hit(sbi)
2203#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002204#define stat_inc_inline_xattr(inode)
2205#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002206#define stat_inc_inline_inode(inode)
2207#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002208#define stat_inc_inline_dir(inode)
2209#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002210#define stat_inc_seg_type(sbi, curseg)
2211#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002212#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002213#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002214#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002215#define stat_inc_data_blk_count(sbi, blks, gc_type)
2216#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002217
2218static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2219static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Chao Yu787c7b8c2015-10-29 09:13:04 +08002220static inline int __init f2fs_create_root_stats(void) { return 0; }
Namjae Jeon4589d252013-01-15 19:58:47 +09002221static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002222#endif
2223
2224extern const struct file_operations f2fs_dir_operations;
2225extern const struct file_operations f2fs_file_operations;
2226extern const struct inode_operations f2fs_file_inode_operations;
2227extern const struct address_space_operations f2fs_dblock_aops;
2228extern const struct address_space_operations f2fs_node_aops;
2229extern const struct address_space_operations f2fs_meta_aops;
2230extern const struct inode_operations f2fs_dir_inode_operations;
2231extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002232extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002233extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002234extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002235
Huajun Lie18c65b2013-11-10 23:13:19 +08002236/*
2237 * inline.c
2238 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002239bool f2fs_may_inline_data(struct inode *);
2240bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002241void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002242bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002243int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002244int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2245int f2fs_convert_inline_inode(struct inode *);
2246int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002247bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002248struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002249 struct fscrypt_name *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002250struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2251int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002252int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2253 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002254void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2255 struct inode *, struct inode *);
2256bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002257int f2fs_read_inline_dir(struct file *, struct dir_context *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002258 struct fscrypt_str *);
Jaegeuk Kim67f8cf3c2015-10-15 11:34:49 -07002259int f2fs_inline_data_fiemap(struct inode *,
2260 struct fiemap_extent_info *, __u64, __u64);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002261
2262/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002263 * shrinker.c
2264 */
2265unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2266unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2267void f2fs_join_shrinker(struct f2fs_sb_info *);
2268void f2fs_leave_shrinker(struct f2fs_sb_info *);
2269
2270/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002271 * extent_cache.c
2272 */
2273unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
Jaegeuk Kimed3d1252015-12-28 11:39:06 -08002274bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
Chao Yua28ef1f2015-07-08 17:59:36 +08002275unsigned int f2fs_destroy_extent_node(struct inode *);
2276void f2fs_destroy_extent_tree(struct inode *);
2277bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2278void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002279void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2280 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002281void init_extent_cache_info(struct f2fs_sb_info *);
2282int __init create_extent_cache(void);
2283void destroy_extent_cache(void);
2284
2285/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002286 * crypto support
2287 */
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002288static inline bool f2fs_encrypted_inode(struct inode *inode)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002289{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002290 return file_is_encrypt(inode);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002291}
2292
2293static inline void f2fs_set_encrypted_inode(struct inode *inode)
2294{
2295#ifdef CONFIG_F2FS_FS_ENCRYPTION
2296 file_set_encrypt(inode);
2297#endif
2298}
2299
2300static inline bool f2fs_bio_encrypted(struct bio *bio)
2301{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002302 return bio->bi_private != NULL;
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002303}
2304
2305static inline int f2fs_sb_has_crypto(struct super_block *sb)
2306{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002307 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002308}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002309
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002310static inline bool f2fs_may_encrypt(struct inode *inode)
2311{
2312#ifdef CONFIG_F2FS_FS_ENCRYPTION
Al Viro886f56f2015-12-05 03:56:06 -05002313 umode_t mode = inode->i_mode;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002314
2315 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2316#else
2317 return 0;
2318#endif
2319}
2320
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002321#ifndef CONFIG_F2FS_FS_ENCRYPTION
2322#define fscrypt_set_d_op(i)
2323#define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2324#define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2325#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2326#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2327#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2328#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2329#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2330#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2331#define fscrypt_process_policy fscrypt_notsupp_process_policy
2332#define fscrypt_get_policy fscrypt_notsupp_get_policy
2333#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2334#define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2335#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2336#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2337#define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2338#define fscrypt_free_filename fscrypt_notsupp_free_filename
2339#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2340#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2341#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2342#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2343#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002344#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002345#endif