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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 Kim53aa6bb2016-05-25 15:24:18 -070048 FAULT_EVICT_INODE,
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070049 FAULT_MAX,
50};
51
Sheng Yong08796892016-05-16 12:38:50 +080052struct f2fs_fault_info {
53 atomic_t inject_ops;
54 unsigned int inject_rate;
55 unsigned int inject_type;
56};
57
58extern struct f2fs_fault_info f2fs_fault;
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070059extern char *fault_name[FAULT_MAX];
Sheng Yong08796892016-05-16 12:38:50 +080060#define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type)))
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070061
62static inline bool time_to_inject(int type)
63{
Sheng Yong08796892016-05-16 12:38:50 +080064 if (!f2fs_fault.inject_rate)
65 return false;
66 if (type == FAULT_KMALLOC && !IS_FAULT_SET(type))
67 return false;
68 else if (type == FAULT_PAGE_ALLOC && !IS_FAULT_SET(type))
69 return false;
70 else if (type == FAULT_ALLOC_NID && !IS_FAULT_SET(type))
71 return false;
72 else if (type == FAULT_ORPHAN && !IS_FAULT_SET(type))
73 return false;
74 else if (type == FAULT_BLOCK && !IS_FAULT_SET(type))
75 return false;
76 else if (type == FAULT_DIR_DEPTH && !IS_FAULT_SET(type))
77 return false;
Jaegeuk Kim53aa6bb2016-05-25 15:24:18 -070078 else if (type == FAULT_EVICT_INODE && !IS_FAULT_SET(type))
79 return false;
Sheng Yong08796892016-05-16 12:38:50 +080080
81 atomic_inc(&f2fs_fault.inject_ops);
82 if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) {
83 atomic_set(&f2fs_fault.inject_ops, 0);
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -070084 printk("%sF2FS-fs : inject %s in %pF\n",
85 KERN_INFO,
86 fault_name[type],
87 __builtin_return_address(0));
88 return true;
89 }
90 return false;
91}
92#endif
93
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090094/*
95 * For mount options
96 */
97#define F2FS_MOUNT_BG_GC 0x00000001
98#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
99#define F2FS_MOUNT_DISCARD 0x00000004
100#define F2FS_MOUNT_NOHEAP 0x00000008
101#define F2FS_MOUNT_XATTR_USER 0x00000010
102#define F2FS_MOUNT_POSIX_ACL 0x00000020
103#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +0900104#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +0800105#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +0800106#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
107#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
108#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -0700109#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +0800110#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim6aefd932015-10-05 11:02:54 -0700111#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
Chao Yu343f40f2015-12-16 13:12:16 +0800112#define F2FS_MOUNT_DATA_FLUSH 0x00008000
Jaegeuk Kim73faec42016-04-29 15:34:32 -0700113#define F2FS_MOUNT_FAULT_INJECTION 0x00010000
Jaegeuk Kim36abef42016-06-03 19:29:38 -0700114#define F2FS_MOUNT_ADAPTIVE 0x00020000
115#define F2FS_MOUNT_LFS 0x00040000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900116
117#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
118#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
119#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
120
121#define ver_after(a, b) (typecheck(unsigned long long, a) && \
122 typecheck(unsigned long long, b) && \
123 ((long long)((a) - (b)) > 0))
124
Jaegeuk Kima9841c42013-05-24 12:41:04 +0900125typedef u32 block_t; /*
126 * should not change u32, since it is the on-disk block
127 * address format, __le32.
128 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900129typedef u32 nid_t;
130
131struct f2fs_mount_info {
132 unsigned int opt;
133};
134
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700135#define F2FS_FEATURE_ENCRYPT 0x0001
136
Jaegeuk Kim76f105a2015-04-13 15:10:36 -0700137#define F2FS_HAS_FEATURE(sb, mask) \
138 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
139#define F2FS_SET_FEATURE(sb, mask) \
140 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
141#define F2FS_CLEAR_FEATURE(sb, mask) \
142 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
143
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900144/*
145 * For checkpoint manager
146 */
147enum {
148 NAT_BITMAP,
149 SIT_BITMAP
150};
151
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700152enum {
153 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800154 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700155 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700156 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700157 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700158};
159
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800160#define DEF_BATCHED_TRIM_SECTIONS 32
161#define BATCHED_TRIM_SEGMENTS(sbi) \
162 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700163#define BATCHED_TRIM_BLOCKS(sbi) \
164 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700165#define DEF_CP_INTERVAL 60 /* 60 secs */
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800166#define DEF_IDLE_INTERVAL 120 /* 2 mins */
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800167
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700168struct cp_control {
169 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700170 __u64 trim_start;
171 __u64 trim_end;
172 __u64 trim_minlen;
173 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700174};
175
Chao Yu662befd2014-02-07 16:11:53 +0800176/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800177 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800178 */
179enum {
180 META_CP,
181 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800182 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700183 META_SSA,
184 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800185};
186
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700187/* for the list of ino */
188enum {
189 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700190 APPEND_INO, /* for append ino list */
191 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700192 MAX_INO_ENTRY, /* max. list */
193};
194
195struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900196 struct list_head list; /* list head */
197 nid_t ino; /* inode number */
198};
199
Chao Yu2710fd72015-12-15 13:30:45 +0800200/* for the list of inodes to be GCed */
Chao Yu06292072014-12-29 15:56:18 +0800201struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900202 struct list_head list; /* list head */
203 struct inode *inode; /* vfs inode pointer */
204};
205
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900206/* for the list of blockaddresses to be discarded */
207struct discard_entry {
208 struct list_head list; /* list head */
209 block_t blkaddr; /* block address to be discarded */
210 int len; /* # of consecutive blocks of the discard */
211};
212
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900213/* for the list of fsync inodes, used only during recovery */
214struct fsync_inode_entry {
215 struct list_head list; /* list head */
216 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700217 block_t blkaddr; /* block address locating the last fsync */
218 block_t last_dentry; /* block address locating the last dentry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900219};
220
Chao Yudfc08a12016-02-14 18:50:40 +0800221#define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
222#define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900223
Chao Yudfc08a12016-02-14 18:50:40 +0800224#define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
225#define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
226#define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
227#define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900228
Chao Yudfc08a12016-02-14 18:50:40 +0800229#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
230#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700231
Chao Yudfc08a12016-02-14 18:50:40 +0800232static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900233{
Chao Yudfc08a12016-02-14 18:50:40 +0800234 int before = nats_in_cursum(journal);
235 journal->n_nats = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900236 return before;
237}
238
Chao Yudfc08a12016-02-14 18:50:40 +0800239static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900240{
Chao Yudfc08a12016-02-14 18:50:40 +0800241 int before = sits_in_cursum(journal);
242 journal->n_sits = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900243 return before;
244}
245
Chao Yudfc08a12016-02-14 18:50:40 +0800246static inline bool __has_cursum_space(struct f2fs_journal *journal,
247 int size, int type)
Chao Yu184a5cd2014-09-04 18:13:01 +0800248{
249 if (type == NAT_JOURNAL)
Chao Yudfc08a12016-02-14 18:50:40 +0800250 return size <= MAX_NAT_JENTRIES(journal);
251 return size <= MAX_SIT_JENTRIES(journal);
Chao Yu184a5cd2014-09-04 18:13:01 +0800252}
253
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900254/*
Namjae Jeone9750822013-02-04 23:41:41 +0900255 * ioctl commands
256 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700257#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
258#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800259#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700260
261#define F2FS_IOCTL_MAGIC 0xf5
262#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
263#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700264#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800265#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
266#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800267#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Chao Yu456b88e2015-10-05 22:24:19 +0800268#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
Chao Yud323d002015-10-27 09:53:45 +0800269#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
Namjae Jeone9750822013-02-04 23:41:41 +0900270
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700271#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
272#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
273#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700274
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800275/*
276 * should be same as XFS_IOC_GOINGDOWN.
277 * Flags for going down operation used by FS_IOC_GOINGDOWN
278 */
279#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
280#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
281#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
282#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
Jaegeuk Kimc912a822015-10-07 09:46:37 -0700283#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800284
Namjae Jeone9750822013-02-04 23:41:41 +0900285#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
286/*
287 * ioctl commands in 32 bit emulation
288 */
Chao Yu04ef4b62015-11-10 18:44:20 +0800289#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
290#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
291#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
Namjae Jeone9750822013-02-04 23:41:41 +0900292#endif
293
Chao Yud323d002015-10-27 09:53:45 +0800294struct f2fs_defragment {
295 u64 start;
296 u64 len;
297};
298
Namjae Jeone9750822013-02-04 23:41:41 +0900299/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900300 * For INODE and NODE manager
301 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700302/* for directory operations */
303struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700304 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700305 const void *bitmap;
306 struct f2fs_dir_entry *dentry;
307 __u8 (*filename)[F2FS_SLOT_LEN];
308 int max;
309};
310
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700311static inline void make_dentry_ptr(struct inode *inode,
312 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700313{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700314 d->inode = inode;
315
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700316 if (type == 1) {
317 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
318 d->max = NR_DENTRY_IN_BLOCK;
319 d->bitmap = &t->dentry_bitmap;
320 d->dentry = t->dentry;
321 d->filename = t->filename;
322 } else {
323 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
324 d->max = NR_INLINE_DENTRY;
325 d->bitmap = &t->dentry_bitmap;
326 d->dentry = t->dentry;
327 d->filename = t->filename;
328 }
329}
330
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900331/*
332 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
333 * as its node offset to distinguish from index node blocks.
334 * But some bits are used to mark the node block.
335 */
336#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
337 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900338enum {
339 ALLOC_NODE, /* allocate a new node page if needed */
340 LOOKUP_NODE, /* look up a node without readahead */
341 LOOKUP_NODE_RA, /*
342 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800343 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900344 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900345};
346
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700347#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900348
Chao Yu817202d92014-04-28 17:59:43 +0800349#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
350
Chao Yu13054c52015-02-05 17:52:58 +0800351/* vector size for gang look-up from extent cache that consists of radix tree */
352#define EXT_TREE_VEC_SIZE 64
353
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900354/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800355#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
356
357/* number of extent info in extent cache we try to shrink */
358#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900359
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900360struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800361 unsigned int fofs; /* start offset in a file */
362 u32 blk; /* start block address of the extent */
363 unsigned int len; /* length of the extent */
364};
365
366struct extent_node {
367 struct rb_node rb_node; /* rb node located in rb-tree */
368 struct list_head list; /* node in global extent list of sbi */
369 struct extent_info ei; /* extent info */
Hou Pengyang201ef5e2016-01-26 12:56:26 +0000370 struct extent_tree *et; /* extent tree pointer */
Chao Yu13054c52015-02-05 17:52:58 +0800371};
372
373struct extent_tree {
374 nid_t ino; /* inode number */
375 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800376 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700377 struct extent_info largest; /* largested extent info */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800378 struct list_head list; /* to be used by sbi->zombie_list */
Chao Yu13054c52015-02-05 17:52:58 +0800379 rwlock_t lock; /* protect extent info rb-tree */
Chao Yu68e35382016-01-08 20:22:52 +0800380 atomic_t node_cnt; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900381};
382
383/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700384 * This structure is taken from ext4_map_blocks.
385 *
386 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
387 */
388#define F2FS_MAP_NEW (1 << BH_New)
389#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700390#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
391#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
392 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700393
394struct f2fs_map_blocks {
395 block_t m_pblk;
396 block_t m_lblk;
397 unsigned int m_len;
398 unsigned int m_flags;
Chao Yuda859852016-01-26 15:42:58 +0800399 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700400};
401
Chao Yue2b4e2b2015-08-19 19:11:19 +0800402/* for flag in get_data_block */
403#define F2FS_GET_BLOCK_READ 0
404#define F2FS_GET_BLOCK_DIO 1
405#define F2FS_GET_BLOCK_FIEMAP 2
406#define F2FS_GET_BLOCK_BMAP 3
Jaegeuk Kimb439b102016-02-03 13:09:09 -0800407#define F2FS_GET_BLOCK_PRE_DIO 4
Jaegeuk Kim24b84912016-02-03 13:49:44 -0800408#define F2FS_GET_BLOCK_PRE_AIO 5
Chao Yue2b4e2b2015-08-19 19:11:19 +0800409
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700410/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900411 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
412 */
413#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900414#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700415#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700416#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900417
Jaegeuk Kimb5492af72015-04-20 13:44:41 -0700418#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
419#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
420#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
421#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
422#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
423#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700424#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
425#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
426#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700427#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
428#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700429
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900430#define DEF_DIR_LEVEL 0
431
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900432struct f2fs_inode_info {
433 struct inode vfs_inode; /* serve a vfs inode */
434 unsigned long i_flags; /* keep an inode flags for ioctl */
435 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900436 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900437 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900438 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900439 umode_t i_acl_mode; /* keep file acl mode temporarily */
440
441 /* Use below internally in f2fs*/
442 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900443 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -0700444 struct percpu_counter dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900445 f2fs_hash_t chash; /* hash value of given file name */
446 unsigned int clevel; /* maximum level of given file name */
447 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900448 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim26de9b12016-05-20 20:42:37 -0700449 loff_t last_disk_size; /* lastly written file size */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700450
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700451 struct list_head dirty_list; /* dirty list for dirs and files */
452 struct list_head gdirty_list; /* linked in global dirty list */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700453 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
454 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700455 struct extent_tree *extent_tree; /* cached extent_tree entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900456};
457
458static inline void get_extent_info(struct extent_info *ext,
Chao Yubd933d42016-05-04 23:19:47 +0800459 struct f2fs_extent *i_ext)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900460{
Chao Yubd933d42016-05-04 23:19:47 +0800461 ext->fofs = le32_to_cpu(i_ext->fofs);
462 ext->blk = le32_to_cpu(i_ext->blk);
463 ext->len = le32_to_cpu(i_ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900464}
465
466static inline void set_raw_extent(struct extent_info *ext,
467 struct f2fs_extent *i_ext)
468{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900469 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800470 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900471 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900472}
473
Chao Yu429511c2015-02-05 17:54:31 +0800474static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
475 u32 blk, unsigned int len)
476{
477 ei->fofs = fofs;
478 ei->blk = blk;
479 ei->len = len;
480}
481
Chao Yu0bdee482015-03-19 19:27:51 +0800482static inline bool __is_extent_same(struct extent_info *ei1,
483 struct extent_info *ei2)
484{
485 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
486 ei1->len == ei2->len);
487}
488
Chao Yu429511c2015-02-05 17:54:31 +0800489static inline bool __is_extent_mergeable(struct extent_info *back,
490 struct extent_info *front)
491{
492 return (back->fofs + back->len == front->fofs &&
493 back->blk + back->len == front->blk);
494}
495
496static inline bool __is_back_mergeable(struct extent_info *cur,
497 struct extent_info *back)
498{
499 return __is_extent_mergeable(back, cur);
500}
501
502static inline bool __is_front_mergeable(struct extent_info *cur,
503 struct extent_info *front)
504{
505 return __is_extent_mergeable(cur, front);
506}
507
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700508static inline void __try_update_largest_extent(struct inode *inode,
509 struct extent_tree *et, struct extent_node *en)
Chao Yu4abd3f52015-09-22 21:07:47 +0800510{
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700511 if (en->ei.len > et->largest.len) {
Chao Yu4abd3f52015-09-22 21:07:47 +0800512 et->largest = en->ei;
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700513 mark_inode_dirty_sync(inode);
514 }
Chao Yu4abd3f52015-09-22 21:07:47 +0800515}
516
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900517struct f2fs_nm_info {
518 block_t nat_blkaddr; /* base disk address of NAT */
519 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900520 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900521 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900522 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800523 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Chao Yu2304cb02016-01-18 18:32:58 +0800524 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900525
526 /* NAT cache management */
527 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700528 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800529 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900530 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700531 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800532 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900533
534 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900535 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900536 struct list_head free_nid_list; /* a list for free nids */
537 spinlock_t free_nid_list_lock; /* protect free nid list */
538 unsigned int fcnt; /* the number of free node id */
539 struct mutex build_lock; /* lock for build free nids */
540
541 /* for checkpoint */
542 char *nat_bitmap; /* NAT bitmap pointer */
543 int bitmap_size; /* bitmap size */
544};
545
546/*
547 * this structure is used as one of function parameters.
548 * all the information are dedicated to a given direct node block determined
549 * by the data offset in a file.
550 */
551struct dnode_of_data {
552 struct inode *inode; /* vfs inode pointer */
553 struct page *inode_page; /* its inode page, NULL is possible */
554 struct page *node_page; /* cached direct node page */
555 nid_t nid; /* node id of the direct node block */
556 unsigned int ofs_in_node; /* data offset in the node page */
557 bool inode_page_locked; /* inode page is locked or not */
Jaegeuk Kim93bae092015-12-22 12:59:54 -0800558 bool node_changed; /* is node block changed */
Chao Yu3cf45742016-01-26 15:40:44 +0800559 char cur_level; /* level of hole node page */
560 char max_level; /* level of current page located */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900561 block_t data_blkaddr; /* block address of the node block */
562};
563
564static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
565 struct page *ipage, struct page *npage, nid_t nid)
566{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900567 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900568 dn->inode = inode;
569 dn->inode_page = ipage;
570 dn->node_page = npage;
571 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900572}
573
574/*
575 * For SIT manager
576 *
577 * By default, there are 6 active log areas across the whole main area.
578 * When considering hot and cold data separation to reduce cleaning overhead,
579 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
580 * respectively.
581 * In the current design, you should not change the numbers intentionally.
582 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
583 * logs individually according to the underlying devices. (default: 6)
584 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
585 * data and 8 for node logs.
586 */
587#define NR_CURSEG_DATA_TYPE (3)
588#define NR_CURSEG_NODE_TYPE (3)
589#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
590
591enum {
592 CURSEG_HOT_DATA = 0, /* directory entry blocks */
593 CURSEG_WARM_DATA, /* data blocks */
594 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
595 CURSEG_HOT_NODE, /* direct node blocks of directory files */
596 CURSEG_WARM_NODE, /* direct node blocks of normal files */
597 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800598 NO_CHECK_TYPE,
599 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900600};
601
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900602struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900603 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800604 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900605 int ret;
606};
607
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800608struct flush_cmd_control {
609 struct task_struct *f2fs_issue_flush; /* flush thread */
610 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Jaegeuk Kim0a87f662016-05-23 12:04:56 -0700611 atomic_t submit_flush; /* # of issued flushes */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800612 struct llist_head issue_list; /* list for command issue */
613 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800614};
615
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900616struct f2fs_sm_info {
617 struct sit_info *sit_info; /* whole segment information */
618 struct free_segmap_info *free_info; /* free segment information */
619 struct dirty_seglist_info *dirty_info; /* dirty segment information */
620 struct curseg_info *curseg_array; /* active segment information */
621
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900622 block_t seg0_blkaddr; /* block address of 0'th segment */
623 block_t main_blkaddr; /* start block address of main area */
624 block_t ssa_blkaddr; /* start block address of SSA area */
625
626 unsigned int segment_count; /* total # of segments */
627 unsigned int main_segments; /* # of segments in main area */
628 unsigned int reserved_segments; /* # of reserved segments */
629 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900630
631 /* a threshold to reclaim prefree segments */
632 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900633
634 /* for small discard management */
635 struct list_head discard_list; /* 4KB discard list */
636 int nr_discards; /* # of discards in the list */
637 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900638
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800639 /* for batched trimming */
640 unsigned int trim_sections; /* # of sections to trim */
641
Chao Yu184a5cd2014-09-04 18:13:01 +0800642 struct list_head sit_entry_set; /* sit entry set list */
643
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900644 unsigned int ipu_policy; /* in-place-update policy */
645 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700646 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900647
648 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800649 struct flush_cmd_control *cmd_control_info;
650
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900651};
652
653/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900654 * For superblock
655 */
656/*
657 * COUNT_TYPE for monitoring
658 *
659 * f2fs monitors the number of several block types such as on-writeback,
660 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
661 */
662enum count_type {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900663 F2FS_DIRTY_DENTS,
Chao Yuc227f912015-12-16 13:09:20 +0800664 F2FS_DIRTY_DATA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900665 F2FS_DIRTY_NODES,
666 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800667 F2FS_INMEM_PAGES,
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700668 F2FS_DIRTY_IMETA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900669 NR_COUNT_TYPE,
670};
671
672/*
arter97e1c42042014-08-06 23:22:50 +0900673 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900674 * The available types are:
675 * DATA User data pages. It operates as async mode.
676 * NODE Node pages. It operates as async mode.
677 * META FS metadata pages such as SIT, NAT, CP.
678 * NR_PAGE_TYPE The number of page types.
679 * META_FLUSH Make sure the previous pages are written
680 * with waiting the bio's completion
681 * ... Only can be used with META.
682 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900683#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900684enum page_type {
685 DATA,
686 NODE,
687 META,
688 NR_PAGE_TYPE,
689 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700690 INMEM, /* the below types are used by tracepoints only. */
691 INMEM_DROP,
Chao Yu28bc1062016-02-06 14:40:34 +0800692 INMEM_REVOKE,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700693 IPU,
694 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900695};
696
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900697struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700698 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800699 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
700 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Chao Yu7a9d7542016-02-22 18:36:38 +0800701 block_t new_blkaddr; /* new block address to be written */
Chao Yu28bc1062016-02-06 14:40:34 +0800702 block_t old_blkaddr; /* old block address before Cow */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700703 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700704 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900705};
706
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900707#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900708struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900709 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900710 struct bio *bio; /* bios to merge */
711 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900712 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800713 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900714};
715
Chao Yuc227f912015-12-16 13:09:20 +0800716enum inode_type {
717 DIR_INODE, /* for dirty dir inode */
718 FILE_INODE, /* for dirty regular/symlink inode */
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700719 DIRTY_META, /* for all dirtied inode metadata */
Chao Yuc227f912015-12-16 13:09:20 +0800720 NR_INODE_TYPE,
721};
722
Chao Yu67298802014-11-18 11:18:36 +0800723/* for inner inode cache management */
724struct inode_management {
725 struct radix_tree_root ino_root; /* ino entry array */
726 spinlock_t ino_lock; /* for ino entry lock */
727 struct list_head ino_list; /* inode list head */
728 unsigned long ino_num; /* number of entries */
729};
730
Chao Yucaf00472015-01-28 17:48:42 +0800731/* For s_flag in struct f2fs_sb_info */
732enum {
733 SBI_IS_DIRTY, /* dirty flag for checkpoint */
734 SBI_IS_CLOSE, /* specify unmounting */
735 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
736 SBI_POR_DOING, /* recovery is doing or not */
Jaegeuk Kimdf728b02016-03-23 17:05:27 -0700737 SBI_NEED_SB_WRITE, /* need to recover superblock */
Chao Yucaf00472015-01-28 17:48:42 +0800738};
739
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800740enum {
741 CP_TIME,
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800742 REQ_TIME,
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800743 MAX_TIME,
744};
745
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700746#ifdef CONFIG_F2FS_FS_ENCRYPTION
747#define F2FS_KEY_DESC_PREFIX "f2fs:"
748#define F2FS_KEY_DESC_PREFIX_SIZE 5
749#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900750struct f2fs_sb_info {
751 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900752 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900753 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yue8240f62015-12-15 17:19:26 +0800754 int valid_super_block; /* valid super block no */
Chao Yucaf00472015-01-28 17:48:42 +0800755 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900756
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700757#ifdef CONFIG_F2FS_FS_ENCRYPTION
758 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
759 u8 key_prefix_size;
760#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900761 /* for node-related operations */
762 struct f2fs_nm_info *nm_info; /* node manager */
763 struct inode *node_inode; /* cache node blocks */
764
765 /* for segment-related operations */
766 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900767
768 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800769 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900770 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim7dfeaa32016-06-04 14:21:28 -0700771 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900772
773 /* for checkpoint */
774 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
775 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900776 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800777 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800778 struct rw_semaphore node_write; /* locking node writes */
Changman Leefb51b5e2013-11-07 12:48:25 +0900779 wait_queue_head_t cp_wait;
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800780 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
781 long interval_time[MAX_TIME]; /* to store thresholds */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900782
Chao Yu67298802014-11-18 11:18:36 +0800783 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700784
785 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800786 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900787
Chao Yuc227f912015-12-16 13:09:20 +0800788 /* for inode management */
789 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
790 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900791
Chao Yu13054c52015-02-05 17:52:58 +0800792 /* for extent tree cache */
793 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
794 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
795 struct list_head extent_list; /* lru list for shrinker */
796 spinlock_t extent_lock; /* locking extent lru list */
Jaegeuk Kim7441cce2015-12-21 19:20:15 -0800797 atomic_t total_ext_tree; /* extent tree count */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800798 struct list_head zombie_list; /* extent zombie tree list */
Jaegeuk Kim74fd8d92015-12-21 19:25:50 -0800799 atomic_t total_zombie_tree; /* extent zombie tree count */
Chao Yu13054c52015-02-05 17:52:58 +0800800 atomic_t total_ext_node; /* extent info count */
801
arter97e1c42042014-08-06 23:22:50 +0900802 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900803 unsigned int log_sectors_per_block; /* log2 sectors per block */
804 unsigned int log_blocksize; /* log2 block size */
805 unsigned int blocksize; /* block size */
806 unsigned int root_ino_num; /* root inode number*/
807 unsigned int node_ino_num; /* node inode number*/
808 unsigned int meta_ino_num; /* meta inode number*/
809 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
810 unsigned int blocks_per_seg; /* blocks per segment */
811 unsigned int segs_per_sec; /* segments per section */
812 unsigned int secs_per_zone; /* sections per zone */
813 unsigned int total_sections; /* total section count */
814 unsigned int total_node_count; /* total node block count */
815 unsigned int total_valid_node_count; /* valid node block count */
Chao Yue0afc4d2015-12-31 14:35:37 +0800816 loff_t max_file_blocks; /* max block index of file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900817 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900818 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900819
820 block_t user_block_count; /* # of user blocks */
821 block_t total_valid_block_count; /* # of valid blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700822 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900823 block_t last_valid_block_count; /* for recovery */
824 u32 s_next_generation; /* for NFS support */
Jaegeuk Kimf5730182016-05-17 16:23:36 -0700825 atomic_t nr_wb_bios; /* # of writeback bios */
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700826
827 /* # of pages, see count_type */
828 struct percpu_counter nr_pages[NR_COUNT_TYPE];
Jaegeuk Kim41382ec2016-05-16 11:06:50 -0700829 /* # of allocated blocks */
830 struct percpu_counter alloc_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900831
Jaegeuk Kim513c5f32016-05-16 11:42:32 -0700832 /* valid inode count */
833 struct percpu_counter total_valid_inode_count;
834
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900835 struct f2fs_mount_info mount_opt; /* mount options */
836
837 /* for cleaning operations */
838 struct mutex gc_mutex; /* mutex for GC */
839 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900840 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900841
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900842 /* maximum # of trials to find a victim segment for SSR and GC */
843 unsigned int max_victim_search;
844
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900845 /*
846 * for stat information.
847 * one is for the LFS mode, and the other is for the SSR mode.
848 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900849#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900850 struct f2fs_stat_info *stat_info; /* FS status information */
851 unsigned int segment_count[2]; /* # of allocated segments */
852 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900853 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800854 atomic64_t total_hit_ext; /* # of lookup extent cache */
855 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
856 atomic64_t read_hit_largest; /* # of hit largest extent node */
857 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800858 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800859 atomic_t inline_inode; /* # of inline_data inodes */
860 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900861 int bg_gc; /* background gc calls */
Chao Yu33fbd512015-12-17 17:14:44 +0800862 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900863#endif
864 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900865 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900866
867 /* For sysfs suppport */
868 struct kobject s_kobj;
869 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700870
871 /* For shrinker support */
872 struct list_head s_list;
873 struct mutex umount_mutex;
874 unsigned int shrinker_run_no;
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800875
876 /* For write statistics */
877 u64 sectors_written_start;
878 u64 kbytes_written;
Keith Mok43b65732016-03-02 12:04:24 -0800879
880 /* Reference to checksum algorithm driver via cryptoapi */
881 struct crypto_shash *s_chksum_driver;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900882};
883
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800884/* For write statistics. Suppose sector size is 512 bytes,
885 * and the return value is in kbytes. s is of struct f2fs_sb_info.
886 */
887#define BD_PART_WRITTEN(s) \
888(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
889 s->sectors_written_start) >> 1)
890
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800891static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
892{
893 sbi->last_time[type] = jiffies;
894}
895
896static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
897{
898 struct timespec ts = {sbi->interval_time[type], 0};
899 unsigned long interval = timespec_to_jiffies(&ts);
900
901 return time_after(jiffies, sbi->last_time[type] + interval);
902}
903
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800904static inline bool is_idle(struct f2fs_sb_info *sbi)
905{
906 struct block_device *bdev = sbi->sb->s_bdev;
907 struct request_queue *q = bdev_get_queue(bdev);
908 struct request_list *rl = &q->root_rl;
909
910 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
911 return 0;
912
913 return f2fs_time_over(sbi, REQ_TIME);
914}
915
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900916/*
917 * Inline functions
918 */
Keith Mok43b65732016-03-02 12:04:24 -0800919static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
920 unsigned int length)
921{
922 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
923 u32 *ctx = (u32 *)shash_desc_ctx(shash);
924 int err;
925
926 shash->tfm = sbi->s_chksum_driver;
927 shash->flags = 0;
928 *ctx = F2FS_SUPER_MAGIC;
929
930 err = crypto_shash_update(shash, address, length);
931 BUG_ON(err);
932
933 return *ctx;
934}
935
936static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
937 void *buf, size_t buf_size)
938{
939 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
940}
941
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900942static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
943{
944 return container_of(inode, struct f2fs_inode_info, vfs_inode);
945}
946
947static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
948{
949 return sb->s_fs_info;
950}
951
Jaegeuk Kim40813632014-09-02 15:31:18 -0700952static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
953{
954 return F2FS_SB(inode->i_sb);
955}
956
957static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
958{
959 return F2FS_I_SB(mapping->host);
960}
961
962static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
963{
964 return F2FS_M_SB(page->mapping);
965}
966
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900967static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
968{
969 return (struct f2fs_super_block *)(sbi->raw_super);
970}
971
972static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
973{
974 return (struct f2fs_checkpoint *)(sbi->ckpt);
975}
976
Gu Zheng45590712013-07-15 17:57:38 +0800977static inline struct f2fs_node *F2FS_NODE(struct page *page)
978{
979 return (struct f2fs_node *)page_address(page);
980}
981
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900982static inline struct f2fs_inode *F2FS_INODE(struct page *page)
983{
984 return &((struct f2fs_node *)page_address(page))->i;
985}
986
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900987static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
988{
989 return (struct f2fs_nm_info *)(sbi->nm_info);
990}
991
992static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
993{
994 return (struct f2fs_sm_info *)(sbi->sm_info);
995}
996
997static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
998{
999 return (struct sit_info *)(SM_I(sbi)->sit_info);
1000}
1001
1002static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1003{
1004 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1005}
1006
1007static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1008{
1009 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1010}
1011
Gu Zheng9df27d92014-01-20 18:37:04 +08001012static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1013{
1014 return sbi->meta_inode->i_mapping;
1015}
1016
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +09001017static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1018{
1019 return sbi->node_inode->i_mapping;
1020}
1021
Chao Yucaf00472015-01-28 17:48:42 +08001022static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001023{
Chao Yucaf00472015-01-28 17:48:42 +08001024 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001025}
1026
Chao Yucaf00472015-01-28 17:48:42 +08001027static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001028{
Chao Yucaf00472015-01-28 17:48:42 +08001029 sbi->s_flag |= (0x01 << type);
1030}
1031
1032static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1033{
1034 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001035}
1036
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001037static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1038{
1039 return le64_to_cpu(cp->checkpoint_ver);
1040}
1041
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001042static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1043{
1044 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1045 return ckpt_flags & f;
1046}
1047
1048static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1049{
1050 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1051 ckpt_flags |= f;
1052 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1053}
1054
1055static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1056{
1057 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1058 ckpt_flags &= (~f);
1059 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1060}
1061
Gu Zhenge4795562013-09-27 18:08:30 +08001062static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001063{
Gu Zhenge4795562013-09-27 18:08:30 +08001064 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001065}
1066
Gu Zhenge4795562013-09-27 18:08:30 +08001067static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001068{
Gu Zhenge4795562013-09-27 18:08:30 +08001069 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001070}
1071
Gu Zhenge4795562013-09-27 18:08:30 +08001072static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001073{
Yang Shi59692b72016-02-26 16:25:25 -08001074 down_write(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001075}
1076
Gu Zhenge4795562013-09-27 18:08:30 +08001077static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001078{
Gu Zhenge4795562013-09-27 18:08:30 +08001079 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001080}
1081
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001082static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1083{
1084 int reason = CP_SYNC;
1085
1086 if (test_opt(sbi, FASTBOOT))
1087 reason = CP_FASTBOOT;
1088 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1089 reason = CP_UMOUNT;
1090 return reason;
1091}
1092
1093static inline bool __remain_node_summaries(int reason)
1094{
1095 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1096}
1097
1098static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1099{
1100 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1101 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1102}
1103
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001104/*
1105 * Check whether the given nid is within node id range.
1106 */
Namjae Jeon064e0822013-03-17 17:27:20 +09001107static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001108{
Chao Yud6b7d4b2014-06-12 13:23:41 +08001109 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1110 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +08001111 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001112 return -EINVAL;
1113 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001114}
1115
1116#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1117
1118/*
1119 * Check whether the inode has blocks or not
1120 */
1121static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1122{
1123 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001124 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001125 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001126 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001127}
1128
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001129static inline bool f2fs_has_xattr_block(unsigned int ofs)
1130{
1131 return ofs == XATTR_NODE_OFFSET;
1132}
1133
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001134static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001135static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
Chao Yu46008c62016-05-09 19:56:30 +08001136 struct inode *inode, blkcnt_t *count)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001137{
1138 block_t valid_block_count;
1139
1140 spin_lock(&sbi->stat_lock);
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001141#ifdef CONFIG_F2FS_FAULT_INJECTION
1142 if (time_to_inject(FAULT_BLOCK)) {
1143 spin_unlock(&sbi->stat_lock);
1144 return false;
1145 }
1146#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001147 valid_block_count =
Chao Yu46008c62016-05-09 19:56:30 +08001148 sbi->total_valid_block_count + (block_t)(*count);
Chao Yucfb271d2013-12-05 17:15:22 +08001149 if (unlikely(valid_block_count > sbi->user_block_count)) {
Chao Yu46008c62016-05-09 19:56:30 +08001150 *count = sbi->user_block_count - sbi->total_valid_block_count;
1151 if (!*count) {
1152 spin_unlock(&sbi->stat_lock);
1153 return false;
1154 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001155 }
Chao Yu46008c62016-05-09 19:56:30 +08001156 /* *count can be recalculated */
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001157 f2fs_i_blocks_write(inode, *count, true);
Chao Yu46008c62016-05-09 19:56:30 +08001158 sbi->total_valid_block_count =
1159 sbi->total_valid_block_count + (block_t)(*count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001160 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001161
1162 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001163 return true;
1164}
1165
Gu Zhengda19b0d2013-11-19 18:03:27 +08001166static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001167 struct inode *inode,
1168 blkcnt_t count)
1169{
1170 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001171 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1172 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001173 f2fs_i_blocks_write(inode, count, false);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001174 sbi->total_valid_block_count -= (block_t)count;
1175 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001176}
1177
1178static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1179{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001180 percpu_counter_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001181 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001182}
1183
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001184static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001185{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001186 percpu_counter_inc(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001187 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1188 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001189}
1190
1191static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1192{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001193 percpu_counter_dec(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001194}
1195
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001196static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001197{
Chao Yu5ac9f362015-06-29 18:14:10 +08001198 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1199 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001200 return;
1201
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001202 percpu_counter_dec(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001203 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1204 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001205}
1206
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001207static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001208{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001209 return percpu_counter_sum_positive(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001210}
1211
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001212static inline s64 get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001213{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001214 return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001215}
1216
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001217static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1218{
Chao Yu3519e3f2015-12-01 11:56:52 +08001219 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001220 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1221 sbi->log_blocks_per_seg;
1222
1223 return segs / sbi->segs_per_sec;
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001224}
1225
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001226static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1227{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001228 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001229}
1230
1231static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1232{
1233 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1234
1235 /* return NAT or SIT bitmap */
1236 if (flag == NAT_BITMAP)
1237 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1238 else if (flag == SIT_BITMAP)
1239 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1240
1241 return 0;
1242}
1243
Wanpeng Li55141482015-02-26 07:57:20 +08001244static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1245{
1246 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1247}
1248
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001249static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1250{
1251 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001252 int offset;
1253
Wanpeng Li55141482015-02-26 07:57:20 +08001254 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001255 if (flag == NAT_BITMAP)
1256 return &ckpt->sit_nat_version_bitmap;
1257 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001258 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001259 } else {
1260 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001261 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001262 return &ckpt->sit_nat_version_bitmap + offset;
1263 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001264}
1265
1266static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1267{
1268 block_t start_addr;
1269 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001270 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001271
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001272 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001273
1274 /*
1275 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001276 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001277 */
1278 if (!(ckpt_version & 1))
1279 start_addr += sbi->blocks_per_seg;
1280
1281 return start_addr;
1282}
1283
1284static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1285{
1286 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1287}
1288
1289static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001290 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001291{
1292 block_t valid_block_count;
1293 unsigned int valid_node_count;
1294
1295 spin_lock(&sbi->stat_lock);
1296
Gu Zhengef86d702013-11-19 18:03:38 +08001297 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001298 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001299 spin_unlock(&sbi->stat_lock);
1300 return false;
1301 }
1302
Gu Zhengef86d702013-11-19 18:03:38 +08001303 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001304 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001305 spin_unlock(&sbi->stat_lock);
1306 return false;
1307 }
1308
1309 if (inode)
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001310 f2fs_i_blocks_write(inode, 1, true);
Gu Zhengef86d702013-11-19 18:03:38 +08001311
Gu Zhengef86d702013-11-19 18:03:38 +08001312 sbi->total_valid_node_count++;
1313 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001314 spin_unlock(&sbi->stat_lock);
1315
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001316 percpu_counter_inc(&sbi->alloc_valid_block_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001317 return true;
1318}
1319
1320static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001321 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001322{
1323 spin_lock(&sbi->stat_lock);
1324
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001325 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1326 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1327 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001328
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001329 f2fs_i_blocks_write(inode, 1, false);
Gu Zhengef86d702013-11-19 18:03:38 +08001330 sbi->total_valid_node_count--;
1331 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001332
1333 spin_unlock(&sbi->stat_lock);
1334}
1335
1336static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1337{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001338 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001339}
1340
1341static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1342{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001343 percpu_counter_inc(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001344}
1345
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001346static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001347{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001348 percpu_counter_dec(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001349}
1350
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001351static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001352{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001353 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001354}
1355
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001356static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1357 pgoff_t index, bool for_write)
1358{
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -07001359#ifdef CONFIG_F2FS_FAULT_INJECTION
1360 struct page *page = find_lock_page(mapping, index);
1361 if (page)
1362 return page;
1363
1364 if (time_to_inject(FAULT_PAGE_ALLOC))
1365 return NULL;
1366#endif
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001367 if (!for_write)
1368 return grab_cache_page(mapping, index);
1369 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1370}
1371
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001372static inline void f2fs_copy_page(struct page *src, struct page *dst)
1373{
1374 char *src_kaddr = kmap(src);
1375 char *dst_kaddr = kmap(dst);
1376
1377 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1378 kunmap(dst);
1379 kunmap(src);
1380}
1381
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001382static inline void f2fs_put_page(struct page *page, int unlock)
1383{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001384 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001385 return;
1386
1387 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001388 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001389 unlock_page(page);
1390 }
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001391 put_page(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001392}
1393
1394static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1395{
1396 if (dn->node_page)
1397 f2fs_put_page(dn->node_page, 1);
1398 if (dn->inode_page && dn->node_page != dn->inode_page)
1399 f2fs_put_page(dn->inode_page, 0);
1400 dn->node_page = NULL;
1401 dn->inode_page = NULL;
1402}
1403
1404static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001405 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001406{
Gu Zhenge8512d22014-03-07 18:43:28 +08001407 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001408}
1409
Gu Zheng7bd59382013-10-22 14:52:26 +08001410static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1411 gfp_t flags)
1412{
1413 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001414
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001415 entry = kmem_cache_alloc(cachep, flags);
1416 if (!entry)
1417 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001418 return entry;
1419}
1420
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001421static inline struct bio *f2fs_bio_alloc(int npages)
1422{
1423 struct bio *bio;
1424
1425 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001426 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001427 if (!bio)
1428 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001429 return bio;
1430}
1431
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001432static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1433 unsigned long index, void *item)
1434{
1435 while (radix_tree_insert(root, index, item))
1436 cond_resched();
1437}
1438
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001439#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1440
1441static inline bool IS_INODE(struct page *page)
1442{
Gu Zheng45590712013-07-15 17:57:38 +08001443 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001444 return RAW_IS_INODE(p);
1445}
1446
1447static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1448{
1449 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1450}
1451
1452static inline block_t datablock_addr(struct page *node_page,
1453 unsigned int offset)
1454{
1455 struct f2fs_node *raw_node;
1456 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001457 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001458 addr_array = blkaddr_in_node(raw_node);
1459 return le32_to_cpu(addr_array[offset]);
1460}
1461
1462static inline int f2fs_test_bit(unsigned int nr, char *addr)
1463{
1464 int mask;
1465
1466 addr += (nr >> 3);
1467 mask = 1 << (7 - (nr & 0x07));
1468 return mask & *addr;
1469}
1470
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001471static inline void f2fs_set_bit(unsigned int nr, char *addr)
1472{
1473 int mask;
1474
1475 addr += (nr >> 3);
1476 mask = 1 << (7 - (nr & 0x07));
1477 *addr |= mask;
1478}
1479
1480static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1481{
1482 int mask;
1483
1484 addr += (nr >> 3);
1485 mask = 1 << (7 - (nr & 0x07));
1486 *addr &= ~mask;
1487}
1488
Gu Zheng52aca072014-10-20 17:45:51 +08001489static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001490{
1491 int mask;
1492 int ret;
1493
1494 addr += (nr >> 3);
1495 mask = 1 << (7 - (nr & 0x07));
1496 ret = mask & *addr;
1497 *addr |= mask;
1498 return ret;
1499}
1500
Gu Zheng52aca072014-10-20 17:45:51 +08001501static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001502{
1503 int mask;
1504 int ret;
1505
1506 addr += (nr >> 3);
1507 mask = 1 << (7 - (nr & 0x07));
1508 ret = mask & *addr;
1509 *addr &= ~mask;
1510 return ret;
1511}
1512
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001513static inline void f2fs_change_bit(unsigned int nr, char *addr)
1514{
1515 int mask;
1516
1517 addr += (nr >> 3);
1518 mask = 1 << (7 - (nr & 0x07));
1519 *addr ^= mask;
1520}
1521
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001522/* used for f2fs_inode_info->flags */
1523enum {
1524 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001525 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001526 FI_AUTO_RECOVER, /* indicate inode is recoverable */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001527 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001528 FI_INC_LINK, /* need to increment i_nlink */
1529 FI_ACL_MODE, /* indicate acl mode */
1530 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001531 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001532 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001533 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001534 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001535 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001536 FI_APPEND_WRITE, /* inode has appended data */
1537 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001538 FI_NEED_IPU, /* used for ipu per file */
1539 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001540 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001541 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001542 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001543 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001544 FI_INLINE_DOTS, /* indicate inline dot dentries */
Chao Yud323d002015-10-27 09:53:45 +08001545 FI_DO_DEFRAG, /* indicate defragment is running */
Chao Yuc227f912015-12-16 13:09:20 +08001546 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001547};
1548
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001549static inline void __mark_inode_dirty_flag(struct inode *inode,
1550 int flag, bool set)
1551{
1552 switch (flag) {
1553 case FI_INLINE_XATTR:
1554 case FI_INLINE_DATA:
1555 case FI_INLINE_DENTRY:
1556 if (set)
1557 return;
1558 case FI_DATA_EXIST:
1559 case FI_INLINE_DOTS:
1560 mark_inode_dirty_sync(inode);
1561 }
1562}
1563
Jaegeuk Kim91942322016-05-20 10:13:22 -07001564static inline void set_inode_flag(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001565{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001566 if (!test_bit(flag, &F2FS_I(inode)->flags))
1567 set_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001568 __mark_inode_dirty_flag(inode, flag, true);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001569}
1570
Jaegeuk Kim91942322016-05-20 10:13:22 -07001571static inline int is_inode_flag_set(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001572{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001573 return test_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001574}
1575
Jaegeuk Kim91942322016-05-20 10:13:22 -07001576static inline void clear_inode_flag(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001577{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001578 if (test_bit(flag, &F2FS_I(inode)->flags))
1579 clear_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001580 __mark_inode_dirty_flag(inode, flag, false);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001581}
1582
Jaegeuk Kim91942322016-05-20 10:13:22 -07001583static inline void set_acl_inode(struct inode *inode, umode_t mode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001584{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001585 F2FS_I(inode)->i_acl_mode = mode;
1586 set_inode_flag(inode, FI_ACL_MODE);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001587 mark_inode_dirty_sync(inode);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001588}
1589
Jaegeuk Kima1961242016-05-20 09:43:20 -07001590static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1591{
1592 if (inc)
1593 inc_nlink(inode);
1594 else
1595 drop_nlink(inode);
1596 mark_inode_dirty_sync(inode);
1597}
1598
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001599static inline void f2fs_i_blocks_write(struct inode *inode,
1600 blkcnt_t diff, bool add)
1601{
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001602 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1603 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1604
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001605 inode->i_blocks = add ? inode->i_blocks + diff :
1606 inode->i_blocks - diff;
1607 mark_inode_dirty_sync(inode);
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001608 if (clean || recover)
1609 set_inode_flag(inode, FI_AUTO_RECOVER);
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001610}
1611
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001612static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1613{
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001614 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1615 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1616
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001617 if (i_size_read(inode) == i_size)
1618 return;
1619
1620 i_size_write(inode, i_size);
1621 mark_inode_dirty_sync(inode);
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001622 if (clean || recover)
1623 set_inode_flag(inode, FI_AUTO_RECOVER);
1624}
1625
1626static inline bool f2fs_skip_inode_update(struct inode *inode)
1627{
1628 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER))
1629 return false;
1630 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001631}
1632
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001633static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1634{
1635 F2FS_I(inode)->i_current_depth = depth;
1636 mark_inode_dirty_sync(inode);
1637}
1638
1639static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1640{
1641 F2FS_I(inode)->i_xattr_nid = xnid;
1642 mark_inode_dirty_sync(inode);
1643}
1644
1645static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1646{
1647 F2FS_I(inode)->i_pino = pino;
1648 mark_inode_dirty_sync(inode);
1649}
1650
Jaegeuk Kim91942322016-05-20 10:13:22 -07001651static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001652{
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001653 struct f2fs_inode_info *fi = F2FS_I(inode);
1654
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001655 if (ri->i_inline & F2FS_INLINE_XATTR)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001656 set_bit(FI_INLINE_XATTR, &fi->flags);
Huajun Li1001b342013-11-10 23:13:16 +08001657 if (ri->i_inline & F2FS_INLINE_DATA)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001658 set_bit(FI_INLINE_DATA, &fi->flags);
Chao Yu34d67de2014-09-24 18:15:19 +08001659 if (ri->i_inline & F2FS_INLINE_DENTRY)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001660 set_bit(FI_INLINE_DENTRY, &fi->flags);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001661 if (ri->i_inline & F2FS_DATA_EXIST)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001662 set_bit(FI_DATA_EXIST, &fi->flags);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001663 if (ri->i_inline & F2FS_INLINE_DOTS)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001664 set_bit(FI_INLINE_DOTS, &fi->flags);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001665}
1666
Jaegeuk Kim91942322016-05-20 10:13:22 -07001667static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001668{
1669 ri->i_inline = 0;
1670
Jaegeuk Kim91942322016-05-20 10:13:22 -07001671 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001672 ri->i_inline |= F2FS_INLINE_XATTR;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001673 if (is_inode_flag_set(inode, FI_INLINE_DATA))
Huajun Li1001b342013-11-10 23:13:16 +08001674 ri->i_inline |= F2FS_INLINE_DATA;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001675 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
Chao Yu34d67de2014-09-24 18:15:19 +08001676 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001677 if (is_inode_flag_set(inode, FI_DATA_EXIST))
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001678 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001679 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001680 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001681}
1682
Chao Yu987c7c32014-03-12 15:59:03 +08001683static inline int f2fs_has_inline_xattr(struct inode *inode)
1684{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001685 return is_inode_flag_set(inode, FI_INLINE_XATTR);
Chao Yu987c7c32014-03-12 15:59:03 +08001686}
1687
Chao Yu81ca7352016-01-26 15:39:35 +08001688static inline unsigned int addrs_per_inode(struct inode *inode)
Jaegeuk Kimde936532013-08-12 21:08:03 +09001689{
Chao Yu81ca7352016-01-26 15:39:35 +08001690 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001691 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1692 return DEF_ADDRS_PER_INODE;
1693}
1694
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001695static inline void *inline_xattr_addr(struct page *page)
1696{
Chao Yu695fd1e2014-02-27 19:52:21 +08001697 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001698 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1699 F2FS_INLINE_XATTR_ADDRS]);
1700}
1701
1702static inline int inline_xattr_size(struct inode *inode)
1703{
Chao Yu987c7c32014-03-12 15:59:03 +08001704 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001705 return F2FS_INLINE_XATTR_ADDRS << 2;
1706 else
1707 return 0;
1708}
1709
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001710static inline int f2fs_has_inline_data(struct inode *inode)
1711{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001712 return is_inode_flag_set(inode, FI_INLINE_DATA);
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001713}
1714
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001715static inline void f2fs_clear_inline_inode(struct inode *inode)
1716{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001717 clear_inode_flag(inode, FI_INLINE_DATA);
1718 clear_inode_flag(inode, FI_DATA_EXIST);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001719}
1720
1721static inline int f2fs_exist_data(struct inode *inode)
1722{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001723 return is_inode_flag_set(inode, FI_DATA_EXIST);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001724}
1725
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001726static inline int f2fs_has_inline_dots(struct inode *inode)
1727{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001728 return is_inode_flag_set(inode, FI_INLINE_DOTS);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001729}
1730
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001731static inline bool f2fs_is_atomic_file(struct inode *inode)
1732{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001733 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001734}
1735
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001736static inline bool f2fs_is_volatile_file(struct inode *inode)
1737{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001738 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001739}
1740
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001741static inline bool f2fs_is_first_block_written(struct inode *inode)
1742{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001743 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001744}
1745
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001746static inline bool f2fs_is_drop_cache(struct inode *inode)
1747{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001748 return is_inode_flag_set(inode, FI_DROP_CACHE);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001749}
1750
Huajun Li1001b342013-11-10 23:13:16 +08001751static inline void *inline_data_addr(struct page *page)
1752{
Chao Yu695fd1e2014-02-27 19:52:21 +08001753 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001754 return (void *)&(ri->i_addr[1]);
1755}
1756
Chao Yu34d67de2014-09-24 18:15:19 +08001757static inline int f2fs_has_inline_dentry(struct inode *inode)
1758{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001759 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
Chao Yu34d67de2014-09-24 18:15:19 +08001760}
1761
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001762static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1763{
1764 if (!f2fs_has_inline_dentry(dir))
1765 kunmap(page);
1766}
1767
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001768static inline int is_file(struct inode *inode, int type)
1769{
1770 return F2FS_I(inode)->i_advise & type;
1771}
1772
1773static inline void set_file(struct inode *inode, int type)
1774{
1775 F2FS_I(inode)->i_advise |= type;
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001776 mark_inode_dirty_sync(inode);
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001777}
1778
1779static inline void clear_file(struct inode *inode, int type)
1780{
1781 F2FS_I(inode)->i_advise &= ~type;
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001782 mark_inode_dirty_sync(inode);
Jaegeuk Kimb5492af72015-04-20 13:44:41 -07001783}
1784
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001785static inline int f2fs_readonly(struct super_block *sb)
1786{
1787 return sb->s_flags & MS_RDONLY;
1788}
1789
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001790static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1791{
1792 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1793}
1794
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001795static inline bool is_dot_dotdot(const struct qstr *str)
1796{
1797 if (str->len == 1 && str->name[0] == '.')
1798 return true;
1799
1800 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1801 return true;
1802
1803 return false;
1804}
1805
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001806static inline bool f2fs_may_extent_tree(struct inode *inode)
1807{
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001808 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
Jaegeuk Kim91942322016-05-20 10:13:22 -07001809 is_inode_flag_set(inode, FI_NO_EXTENT))
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001810 return false;
1811
Al Viro886f56f2015-12-05 03:56:06 -05001812 return S_ISREG(inode->i_mode);
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001813}
1814
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001815static inline void *f2fs_kmalloc(size_t size, gfp_t flags)
1816{
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -07001817#ifdef CONFIG_F2FS_FAULT_INJECTION
1818 if (time_to_inject(FAULT_KMALLOC))
1819 return NULL;
1820#endif
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001821 return kmalloc(size, flags);
1822}
1823
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001824static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1825{
1826 void *ret;
1827
1828 ret = kmalloc(size, flags | __GFP_NOWARN);
1829 if (!ret)
1830 ret = __vmalloc(size, flags, PAGE_KERNEL);
1831 return ret;
1832}
1833
1834static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1835{
1836 void *ret;
1837
1838 ret = kzalloc(size, flags | __GFP_NOWARN);
1839 if (!ret)
1840 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1841 return ret;
1842}
1843
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001844#define get_inode_mode(i) \
Jaegeuk Kim91942322016-05-20 10:13:22 -07001845 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001846 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1847
Chao Yu267378d2014-04-23 14:10:24 +08001848/* get offset of first page in next direct node */
Chao Yu81ca7352016-01-26 15:39:35 +08001849#define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1850 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1851 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1852 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
Chao Yu267378d2014-04-23 14:10:24 +08001853
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001854/*
1855 * file.c
1856 */
1857int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1858void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001859int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim9a449e92016-06-02 13:49:38 -07001860int f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001861int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001862int f2fs_setattr(struct dentry *, struct iattr *);
1863int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001864int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001865long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001866long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001867
1868/*
1869 * inode.c
1870 */
1871void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001872struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001873int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -08001874int update_inode(struct inode *, struct page *);
1875int update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001876int f2fs_write_inode(struct inode *, struct writeback_control *);
1877void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001878void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001879
1880/*
1881 * namei.c
1882 */
1883struct dentry *f2fs_get_parent(struct dentry *child);
1884
1885/*
1886 * dir.c
1887 */
Chao Yudbeacf02014-09-24 18:17:04 +08001888extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001889void set_de_type(struct f2fs_dir_entry *, umode_t);
Chao Yu675f10b2016-02-22 18:29:18 +08001890unsigned char get_de_type(struct f2fs_dir_entry *);
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001891struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001892 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001893bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001894 unsigned int, struct fscrypt_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001895void do_make_empty_dir(struct inode *, struct inode *,
1896 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001897struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001898 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001899void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001900int room_for_filename(const void *, int, int);
Jaegeuk Kim9f7c45c2016-06-01 21:18:25 -07001901void f2fs_drop_nlink(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001902struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1903 struct page **);
1904struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1905ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1906void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1907 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001908int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001909void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001910 const struct qstr *, f2fs_hash_t , unsigned int);
Chao Yu675f10b2016-02-22 18:29:18 +08001911int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1912 struct inode *, nid_t, umode_t);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001913int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1914 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001915void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1916 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001917int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001918bool f2fs_empty_dir(struct inode *);
1919
Al Virob7f7a5e2013-01-25 16:15:43 -05001920static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1921{
David Howells2b0143b2015-03-17 22:25:59 +00001922 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001923 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001924}
1925
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001926/*
1927 * super.c
1928 */
Jaegeuk Kim0f18b462016-05-20 11:10:10 -07001929void f2fs_inode_synced(struct inode *);
Chao Yuc5bda1c2015-06-08 13:28:03 +08001930int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001931int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001932extern __printf(3, 4)
1933void f2fs_msg(struct super_block *, const char *, const char *, ...);
Shawn Lin984ec632016-02-17 11:26:32 +08001934int sanity_check_ckpt(struct f2fs_sb_info *sbi);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001935
1936/*
1937 * hash.c
1938 */
Gu Zhengeee61602014-06-24 18:21:23 +08001939f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001940
1941/*
1942 * node.c
1943 */
1944struct dnode_of_data;
1945struct node_info;
1946
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001947bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001948int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001949bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001950bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001951void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
Chao Yu3cf45742016-01-26 15:40:44 +08001952pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001953int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1954int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001955int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001956int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001957int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001958struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001959struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001960void ra_node_page(struct f2fs_sb_info *, nid_t);
1961struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1962struct page *get_node_page_ra(struct page *, int);
Chao Yuda011cc2016-04-27 21:40:15 +08001963void move_node_page(struct page *, int);
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001964int fsync_node_pages(struct f2fs_sb_info *, struct inode *,
1965 struct writeback_control *, bool);
Jaegeuk Kim52681372016-04-13 16:24:44 -07001966int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001967bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1968void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1969void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001970int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001971void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001972void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001973int recover_inode_page(struct f2fs_sb_info *, struct page *);
1974int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1975 struct f2fs_summary_block *);
1976void flush_nat_entries(struct f2fs_sb_info *);
1977int build_node_manager(struct f2fs_sb_info *);
1978void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001979int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001980void destroy_node_manager_caches(void);
1981
1982/*
1983 * segment.c
1984 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001985void register_inmem_page(struct inode *, struct page *);
Chao Yu29b96b52016-02-06 14:38:29 +08001986void drop_inmem_pages(struct inode *);
1987int commit_inmem_pages(struct inode *);
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08001988void f2fs_balance_fs(struct f2fs_sb_info *, bool);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001989void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001990int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001991int create_flush_cmd_control(struct f2fs_sb_info *);
1992void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001993void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001994bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001995void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07001996void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001997void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08001998bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001999int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002000void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002001int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002002struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08002003void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09002004void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002005void write_node_page(unsigned int, struct f2fs_io_info *);
2006void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
2007void rewrite_data_page(struct f2fs_io_info *);
Chao Yu4356e482016-02-23 17:52:43 +08002008void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
2009 block_t, block_t, bool, bool);
Chao Yu528e3452015-05-28 19:15:35 +08002010void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
Chao Yu28bc1062016-02-06 14:40:34 +08002011 block_t, block_t, unsigned char, bool, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002012void allocate_data_block(struct f2fs_sb_info *, struct page *,
2013 block_t, block_t *, struct f2fs_summary *, int);
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08002014void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
Chao Yu08b39fb2015-10-08 13:27:34 +08002015void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002016void write_data_summaries(struct f2fs_sb_info *, block_t);
2017void write_node_summaries(struct f2fs_sb_info *, block_t);
Chao Yudfc08a12016-02-14 18:50:40 +08002018int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002019void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002020int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002021void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09002022int __init create_segment_manager_caches(void);
2023void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002024
2025/*
2026 * checkpoint.c
2027 */
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07002028void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002029struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2030struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08002031struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08002032bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08002033int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08002034void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002035long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Chao Yua49324f2015-12-15 13:29:47 +08002036void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2037void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim74ef9242016-05-02 22:09:56 -07002038void release_ino_entry(struct f2fs_sb_info *, bool);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07002039bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kim0f18b462016-05-20 11:10:10 -07002040int f2fs_sync_inode_meta(struct f2fs_sb_info *);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09002041int acquire_orphan_inode(struct f2fs_sb_info *);
2042void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002043void add_orphan_inode(struct f2fs_sb_info *, nid_t);
2044void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08002045int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002046int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07002047void update_dirty_page(struct inode *, struct page *);
Chao Yuc227f912015-12-16 13:09:20 +08002048void remove_dirty_inode(struct inode *);
Chao Yu6d5a1492015-12-24 18:04:56 +08002049int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
Chao Yuc34f42e2015-12-23 17:50:30 +08002050int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07002051void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09002052int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002053void destroy_checkpoint_caches(void);
2054
2055/*
2056 * data.c
2057 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09002058void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Chao Yu0c3a5792016-01-18 18:28:11 +08002059void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2060 struct page *, nid_t, enum page_type, int);
Chao Yu406657d2016-02-24 17:17:55 +08002061void f2fs_flush_merged_bios(struct f2fs_sb_info *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002062int f2fs_submit_page_bio(struct f2fs_io_info *);
2063void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08002064void set_data_blkaddr(struct dnode_of_data *);
Chao Yuf28b3432016-02-24 17:16:47 +08002065void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
Chao Yu46008c62016-05-09 19:56:30 +08002066int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002067int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08002068int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kimb439b102016-02-03 13:09:09 -08002069ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
Huajun Lib6009652013-11-10 23:13:18 +08002070int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07002071struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07002072struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07002073struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09002074struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002075int do_write_data_page(struct f2fs_io_info *);
Chao Yud323d002015-10-27 09:53:45 +08002076int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09002077int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08002078void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2079int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002080
2081/*
2082 * gc.c
2083 */
2084int start_gc_thread(struct f2fs_sb_info *);
2085void stop_gc_thread(struct f2fs_sb_info *);
Chao Yu81ca7352016-01-26 15:39:35 +08002086block_t start_bidx_of_node(unsigned int, struct inode *);
Chao Yud530d4d2015-10-05 22:22:44 +08002087int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002088void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002089
2090/*
2091 * recovery.c
2092 */
Jaegeuk Kim6781eab2016-03-23 16:12:58 -07002093int recover_fsync_data(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002094bool space_for_roll_forward(struct f2fs_sb_info *);
2095
2096/*
2097 * debug.c
2098 */
2099#ifdef CONFIG_F2FS_STAT_FS
2100struct f2fs_stat_info {
2101 struct list_head stat_list;
2102 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002103 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2104 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08002105 unsigned long long hit_largest, hit_cached, hit_rbtree;
2106 unsigned long long hit_total, total_ext;
Jaegeuk Kimc00ba552015-12-31 15:24:14 -08002107 int ext_tree, zombie_tree, ext_node;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002108 s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages;
Jaegeuk Kim0f18b462016-05-20 11:10:10 -07002109 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08002110 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002111 int total_count, utilization;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002112 int bg_gc, wb_bios;
Jaegeuk Kim652be552016-05-10 19:13:50 -07002113 int inline_xattr, inline_inode, inline_dir, orphans;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002114 unsigned int valid_count, valid_node_count, valid_inode_count;
2115 unsigned int bimodal, avg_vblocks;
2116 int util_free, util_valid, util_invalid;
2117 int rsvd_segs, overp_segs;
2118 int dirty_count, node_pages, meta_pages;
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002119 int prefree_count, call_count, cp_count, bg_cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002120 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09002121 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002122 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09002123 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002124 int curseg[NR_CURSEG_TYPE];
2125 int cursec[NR_CURSEG_TYPE];
2126 int curzone[NR_CURSEG_TYPE];
2127
2128 unsigned int segment_count[2];
2129 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09002130 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08002131 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002132};
2133
Gu Zheng963d4f72013-07-12 14:47:11 +08002134static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2135{
Chris Fries6c311ec2014-01-17 14:44:39 -06002136 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08002137}
2138
Changman Lee942e0be2014-02-13 15:12:29 +09002139#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002140#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002141#define stat_inc_call_count(si) ((si)->call_count++)
2142#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
Chao Yu33fbd512015-12-17 17:14:44 +08002143#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2144#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
Chao Yu5b7ee372015-09-30 17:38:48 +08002145#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2146#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2147#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2148#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08002149#define stat_inc_inline_xattr(inode) \
2150 do { \
2151 if (f2fs_has_inline_xattr(inode)) \
2152 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2153 } while (0)
2154#define stat_dec_inline_xattr(inode) \
2155 do { \
2156 if (f2fs_has_inline_xattr(inode)) \
2157 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2158 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002159#define stat_inc_inline_inode(inode) \
2160 do { \
2161 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002162 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002163 } while (0)
2164#define stat_dec_inline_inode(inode) \
2165 do { \
2166 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002167 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002168 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002169#define stat_inc_inline_dir(inode) \
2170 do { \
2171 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002172 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002173 } while (0)
2174#define stat_dec_inline_dir(inode) \
2175 do { \
2176 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002177 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002178 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002179#define stat_inc_seg_type(sbi, curseg) \
2180 ((sbi)->segment_count[(curseg)->alloc_type]++)
2181#define stat_inc_block_count(sbi, curseg) \
2182 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09002183#define stat_inc_inplace_blocks(sbi) \
2184 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09002185#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002186 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002187 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002188 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002189 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002190 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002191 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2192 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002193 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002194 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2195 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002196 } while (0)
2197
2198#define stat_inc_tot_blk_count(si, blks) \
2199 (si->tot_blks += (blks))
2200
Changman Leee1235982014-12-23 08:37:39 +09002201#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002202 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002203 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002204 stat_inc_tot_blk_count(si, blks); \
2205 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002206 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002207 } while (0)
2208
Changman Leee1235982014-12-23 08:37:39 +09002209#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002210 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002211 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002212 stat_inc_tot_blk_count(si, blks); \
2213 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002214 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002215 } while (0)
2216
2217int f2fs_build_stats(struct f2fs_sb_info *);
2218void f2fs_destroy_stats(struct f2fs_sb_info *);
Chao Yu787c7b8c2015-10-29 09:13:04 +08002219int __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09002220void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002221#else
Changman Lee942e0be2014-02-13 15:12:29 +09002222#define stat_inc_cp_count(si)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002223#define stat_inc_bg_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002224#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002225#define stat_inc_bggc_count(si)
Chao Yu33fbd512015-12-17 17:14:44 +08002226#define stat_inc_dirty_inode(sbi, type)
2227#define stat_dec_dirty_inode(sbi, type)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002228#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08002229#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002230#define stat_inc_largest_node_hit(sbi)
2231#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002232#define stat_inc_inline_xattr(inode)
2233#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002234#define stat_inc_inline_inode(inode)
2235#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002236#define stat_inc_inline_dir(inode)
2237#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002238#define stat_inc_seg_type(sbi, curseg)
2239#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002240#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002241#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002242#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002243#define stat_inc_data_blk_count(sbi, blks, gc_type)
2244#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002245
2246static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2247static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Chao Yu787c7b8c2015-10-29 09:13:04 +08002248static inline int __init f2fs_create_root_stats(void) { return 0; }
Namjae Jeon4589d252013-01-15 19:58:47 +09002249static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002250#endif
2251
2252extern const struct file_operations f2fs_dir_operations;
2253extern const struct file_operations f2fs_file_operations;
2254extern const struct inode_operations f2fs_file_inode_operations;
2255extern const struct address_space_operations f2fs_dblock_aops;
2256extern const struct address_space_operations f2fs_node_aops;
2257extern const struct address_space_operations f2fs_meta_aops;
2258extern const struct inode_operations f2fs_dir_inode_operations;
2259extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002260extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002261extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002262extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002263
Huajun Lie18c65b2013-11-10 23:13:19 +08002264/*
2265 * inline.c
2266 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002267bool f2fs_may_inline_data(struct inode *);
2268bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002269void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002270bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002271int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002272int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2273int f2fs_convert_inline_inode(struct inode *);
2274int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002275bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002276struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002277 struct fscrypt_name *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002278struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
2279int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002280int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2281 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002282void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2283 struct inode *, struct inode *);
2284bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002285int f2fs_read_inline_dir(struct file *, struct dir_context *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002286 struct fscrypt_str *);
Jaegeuk Kim67f8cf3c2015-10-15 11:34:49 -07002287int f2fs_inline_data_fiemap(struct inode *,
2288 struct fiemap_extent_info *, __u64, __u64);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002289
2290/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002291 * shrinker.c
2292 */
2293unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2294unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2295void f2fs_join_shrinker(struct f2fs_sb_info *);
2296void f2fs_leave_shrinker(struct f2fs_sb_info *);
2297
2298/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002299 * extent_cache.c
2300 */
2301unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
Jaegeuk Kimed3d1252015-12-28 11:39:06 -08002302bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
Chao Yua28ef1f2015-07-08 17:59:36 +08002303unsigned int f2fs_destroy_extent_node(struct inode *);
2304void f2fs_destroy_extent_tree(struct inode *);
2305bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2306void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002307void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2308 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002309void init_extent_cache_info(struct f2fs_sb_info *);
2310int __init create_extent_cache(void);
2311void destroy_extent_cache(void);
2312
2313/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002314 * crypto support
2315 */
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002316static inline bool f2fs_encrypted_inode(struct inode *inode)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002317{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002318 return file_is_encrypt(inode);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002319}
2320
2321static inline void f2fs_set_encrypted_inode(struct inode *inode)
2322{
2323#ifdef CONFIG_F2FS_FS_ENCRYPTION
2324 file_set_encrypt(inode);
2325#endif
2326}
2327
2328static inline bool f2fs_bio_encrypted(struct bio *bio)
2329{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002330 return bio->bi_private != NULL;
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002331}
2332
2333static inline int f2fs_sb_has_crypto(struct super_block *sb)
2334{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002335 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002336}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002337
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002338static inline bool f2fs_may_encrypt(struct inode *inode)
2339{
2340#ifdef CONFIG_F2FS_FS_ENCRYPTION
Al Viro886f56f2015-12-05 03:56:06 -05002341 umode_t mode = inode->i_mode;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002342
2343 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2344#else
2345 return 0;
2346#endif
2347}
2348
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002349#ifndef CONFIG_F2FS_FS_ENCRYPTION
2350#define fscrypt_set_d_op(i)
2351#define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2352#define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2353#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2354#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2355#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2356#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2357#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2358#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2359#define fscrypt_process_policy fscrypt_notsupp_process_policy
2360#define fscrypt_get_policy fscrypt_notsupp_get_policy
2361#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2362#define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2363#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2364#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2365#define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2366#define fscrypt_free_filename fscrypt_notsupp_free_filename
2367#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2368#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2369#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2370#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2371#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002372#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002373#endif