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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
Jaegeuk Kim52763a42016-06-13 09:47:48 -0700136#define F2FS_FEATURE_HMSMR 0x0002
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700137
Jaegeuk Kim76f105a2015-04-13 15:10:36 -0700138#define F2FS_HAS_FEATURE(sb, mask) \
139 ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
140#define F2FS_SET_FEATURE(sb, mask) \
141 F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask)
142#define F2FS_CLEAR_FEATURE(sb, mask) \
143 F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask)
144
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900145/*
146 * For checkpoint manager
147 */
148enum {
149 NAT_BITMAP,
150 SIT_BITMAP
151};
152
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700153enum {
154 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800155 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700156 CP_SYNC,
Jaegeuk Kim10027552015-04-09 17:03:53 -0700157 CP_RECOVERY,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700158 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700159};
160
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800161#define DEF_BATCHED_TRIM_SECTIONS 32
162#define BATCHED_TRIM_SEGMENTS(sbi) \
163 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700164#define BATCHED_TRIM_BLOCKS(sbi) \
165 (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
Jaegeuk Kim60b99b42015-10-05 14:49:57 -0700166#define DEF_CP_INTERVAL 60 /* 60 secs */
Chao Yudcf25fe2016-07-15 19:25:47 +0800167#define DEF_IDLE_INTERVAL 5 /* 5 secs */
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800168
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700169struct cp_control {
170 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700171 __u64 trim_start;
172 __u64 trim_end;
173 __u64 trim_minlen;
174 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700175};
176
Chao Yu662befd2014-02-07 16:11:53 +0800177/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800178 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800179 */
180enum {
181 META_CP,
182 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800183 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700184 META_SSA,
185 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800186};
187
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700188/* for the list of ino */
189enum {
190 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700191 APPEND_INO, /* for append ino list */
192 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700193 MAX_INO_ENTRY, /* max. list */
194};
195
196struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900197 struct list_head list; /* list head */
198 nid_t ino; /* inode number */
199};
200
Chao Yu2710fd72015-12-15 13:30:45 +0800201/* for the list of inodes to be GCed */
Chao Yu06292072014-12-29 15:56:18 +0800202struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900203 struct list_head list; /* list head */
204 struct inode *inode; /* vfs inode pointer */
205};
206
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900207/* for the list of blockaddresses to be discarded */
208struct discard_entry {
209 struct list_head list; /* list head */
210 block_t blkaddr; /* block address to be discarded */
211 int len; /* # of consecutive blocks of the discard */
212};
213
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900214/* for the list of fsync inodes, used only during recovery */
215struct fsync_inode_entry {
216 struct list_head list; /* list head */
217 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700218 block_t blkaddr; /* block address locating the last fsync */
219 block_t last_dentry; /* block address locating the last dentry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900220};
221
Chao Yudfc08a12016-02-14 18:50:40 +0800222#define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
223#define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900224
Chao Yudfc08a12016-02-14 18:50:40 +0800225#define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
226#define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
227#define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
228#define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900229
Chao Yudfc08a12016-02-14 18:50:40 +0800230#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
231#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700232
Chao Yudfc08a12016-02-14 18:50:40 +0800233static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900234{
Chao Yudfc08a12016-02-14 18:50:40 +0800235 int before = nats_in_cursum(journal);
236 journal->n_nats = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900237 return before;
238}
239
Chao Yudfc08a12016-02-14 18:50:40 +0800240static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900241{
Chao Yudfc08a12016-02-14 18:50:40 +0800242 int before = sits_in_cursum(journal);
243 journal->n_sits = cpu_to_le16(before + i);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900244 return before;
245}
246
Chao Yudfc08a12016-02-14 18:50:40 +0800247static inline bool __has_cursum_space(struct f2fs_journal *journal,
248 int size, int type)
Chao Yu184a5cd2014-09-04 18:13:01 +0800249{
250 if (type == NAT_JOURNAL)
Chao Yudfc08a12016-02-14 18:50:40 +0800251 return size <= MAX_NAT_JENTRIES(journal);
252 return size <= MAX_SIT_JENTRIES(journal);
Chao Yu184a5cd2014-09-04 18:13:01 +0800253}
254
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900255/*
Namjae Jeone9750822013-02-04 23:41:41 +0900256 * ioctl commands
257 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700258#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
259#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800260#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700261
262#define F2FS_IOCTL_MAGIC 0xf5
263#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
264#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700265#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800266#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
267#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Chao Yuc1c1b582015-07-10 18:08:10 +0800268#define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6)
Chao Yu456b88e2015-10-05 22:24:19 +0800269#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
Chao Yud323d002015-10-27 09:53:45 +0800270#define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8)
Jaegeuk Kim4dd6f972016-07-08 15:16:47 -0700271#define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
272 struct f2fs_move_range)
Namjae Jeone9750822013-02-04 23:41:41 +0900273
Jaegeuk Kim0b81d072015-05-15 16:26:10 -0700274#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
275#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
276#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
Jaegeuk Kimf424f662015-04-20 15:19:06 -0700277
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800278/*
279 * should be same as XFS_IOC_GOINGDOWN.
280 * Flags for going down operation used by FS_IOC_GOINGDOWN
281 */
282#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
283#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
284#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
285#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
Jaegeuk Kimc912a822015-10-07 09:46:37 -0700286#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800287
Namjae Jeone9750822013-02-04 23:41:41 +0900288#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
289/*
290 * ioctl commands in 32 bit emulation
291 */
Chao Yu04ef4b62015-11-10 18:44:20 +0800292#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
293#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
294#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
Namjae Jeone9750822013-02-04 23:41:41 +0900295#endif
296
Chao Yud323d002015-10-27 09:53:45 +0800297struct f2fs_defragment {
298 u64 start;
299 u64 len;
300};
301
Jaegeuk Kim4dd6f972016-07-08 15:16:47 -0700302struct f2fs_move_range {
303 u32 dst_fd; /* destination fd */
304 u64 pos_in; /* start position in src_fd */
305 u64 pos_out; /* start position in dst_fd */
306 u64 len; /* size to move */
307};
308
Namjae Jeone9750822013-02-04 23:41:41 +0900309/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900310 * For INODE and NODE manager
311 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700312/* for directory operations */
313struct f2fs_dentry_ptr {
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700314 struct inode *inode;
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700315 const void *bitmap;
316 struct f2fs_dir_entry *dentry;
317 __u8 (*filename)[F2FS_SLOT_LEN];
318 int max;
319};
320
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700321static inline void make_dentry_ptr(struct inode *inode,
322 struct f2fs_dentry_ptr *d, void *src, int type)
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700323{
Jaegeuk Kimd8c68222015-04-27 16:26:24 -0700324 d->inode = inode;
325
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700326 if (type == 1) {
327 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
328 d->max = NR_DENTRY_IN_BLOCK;
329 d->bitmap = &t->dentry_bitmap;
330 d->dentry = t->dentry;
331 d->filename = t->filename;
332 } else {
333 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
334 d->max = NR_INLINE_DENTRY;
335 d->bitmap = &t->dentry_bitmap;
336 d->dentry = t->dentry;
337 d->filename = t->filename;
338 }
339}
340
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900341/*
342 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
343 * as its node offset to distinguish from index node blocks.
344 * But some bits are used to mark the node block.
345 */
346#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
347 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900348enum {
349 ALLOC_NODE, /* allocate a new node page if needed */
350 LOOKUP_NODE, /* look up a node without readahead */
351 LOOKUP_NODE_RA, /*
352 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800353 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900354 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900355};
356
Jaegeuk Kima6db67f2015-08-10 15:01:12 -0700357#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900358
Chao Yu817202d92014-04-28 17:59:43 +0800359#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
360
Chao Yu13054c52015-02-05 17:52:58 +0800361/* vector size for gang look-up from extent cache that consists of radix tree */
362#define EXT_TREE_VEC_SIZE 64
363
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900364/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800365#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
366
367/* number of extent info in extent cache we try to shrink */
368#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900369
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900370struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800371 unsigned int fofs; /* start offset in a file */
372 u32 blk; /* start block address of the extent */
373 unsigned int len; /* length of the extent */
374};
375
376struct extent_node {
377 struct rb_node rb_node; /* rb node located in rb-tree */
378 struct list_head list; /* node in global extent list of sbi */
379 struct extent_info ei; /* extent info */
Hou Pengyang201ef5e2016-01-26 12:56:26 +0000380 struct extent_tree *et; /* extent tree pointer */
Chao Yu13054c52015-02-05 17:52:58 +0800381};
382
383struct extent_tree {
384 nid_t ino; /* inode number */
385 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800386 struct extent_node *cached_en; /* recently accessed extent node */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700387 struct extent_info largest; /* largested extent info */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800388 struct list_head list; /* to be used by sbi->zombie_list */
Chao Yu13054c52015-02-05 17:52:58 +0800389 rwlock_t lock; /* protect extent info rb-tree */
Chao Yu68e35382016-01-08 20:22:52 +0800390 atomic_t node_cnt; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900391};
392
393/*
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700394 * This structure is taken from ext4_map_blocks.
395 *
396 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
397 */
398#define F2FS_MAP_NEW (1 << BH_New)
399#define F2FS_MAP_MAPPED (1 << BH_Mapped)
Jaegeuk Kim7f63eb72015-05-08 19:30:32 -0700400#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
401#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
402 F2FS_MAP_UNWRITTEN)
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700403
404struct f2fs_map_blocks {
405 block_t m_pblk;
406 block_t m_lblk;
407 unsigned int m_len;
408 unsigned int m_flags;
Chao Yuda859852016-01-26 15:42:58 +0800409 pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700410};
411
Chao Yue2b4e2b2015-08-19 19:11:19 +0800412/* for flag in get_data_block */
413#define F2FS_GET_BLOCK_READ 0
414#define F2FS_GET_BLOCK_DIO 1
415#define F2FS_GET_BLOCK_FIEMAP 2
416#define F2FS_GET_BLOCK_BMAP 3
Jaegeuk Kimb439b102016-02-03 13:09:09 -0800417#define F2FS_GET_BLOCK_PRE_DIO 4
Jaegeuk Kim24b84912016-02-03 13:49:44 -0800418#define F2FS_GET_BLOCK_PRE_AIO 5
Chao Yue2b4e2b2015-08-19 19:11:19 +0800419
Jaegeuk Kim003a3e12015-04-06 19:55:34 -0700420/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900421 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
422 */
423#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900424#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700425#define FADVISE_ENCRYPT_BIT 0x04
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700426#define FADVISE_ENC_NAME_BIT 0x08
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900427
Jaegeuk Kimb5492af2015-04-20 13:44:41 -0700428#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
429#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
430#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
431#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
432#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
433#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700434#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
435#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
436#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
Jaegeuk Kime7d55452015-04-29 17:02:18 -0700437#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
438#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -0700439
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900440#define DEF_DIR_LEVEL 0
441
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900442struct f2fs_inode_info {
443 struct inode vfs_inode; /* serve a vfs inode */
444 unsigned long i_flags; /* keep an inode flags for ioctl */
445 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900446 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900447 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900448 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900449 umode_t i_acl_mode; /* keep file acl mode temporarily */
450
451 /* Use below internally in f2fs*/
452 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900453 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -0700454 struct percpu_counter dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900455 f2fs_hash_t chash; /* hash value of given file name */
456 unsigned int clevel; /* maximum level of given file name */
457 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900458 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim26de9b12016-05-20 20:42:37 -0700459 loff_t last_disk_size; /* lastly written file size */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700460
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700461 struct list_head dirty_list; /* dirty list for dirs and files */
462 struct list_head gdirty_list; /* linked in global dirty list */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700463 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
464 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim3e72f722015-06-19 17:53:26 -0700465 struct extent_tree *extent_tree; /* cached extent_tree entry */
Chao Yu82e0a5a2016-07-13 09:18:29 +0800466 struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900467};
468
469static inline void get_extent_info(struct extent_info *ext,
Chao Yubd933d42016-05-04 23:19:47 +0800470 struct f2fs_extent *i_ext)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900471{
Chao Yubd933d42016-05-04 23:19:47 +0800472 ext->fofs = le32_to_cpu(i_ext->fofs);
473 ext->blk = le32_to_cpu(i_ext->blk);
474 ext->len = le32_to_cpu(i_ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900475}
476
477static inline void set_raw_extent(struct extent_info *ext,
478 struct f2fs_extent *i_ext)
479{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900480 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800481 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900482 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900483}
484
Chao Yu429511c2015-02-05 17:54:31 +0800485static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
486 u32 blk, unsigned int len)
487{
488 ei->fofs = fofs;
489 ei->blk = blk;
490 ei->len = len;
491}
492
Chao Yu0bdee482015-03-19 19:27:51 +0800493static inline bool __is_extent_same(struct extent_info *ei1,
494 struct extent_info *ei2)
495{
496 return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk &&
497 ei1->len == ei2->len);
498}
499
Chao Yu429511c2015-02-05 17:54:31 +0800500static inline bool __is_extent_mergeable(struct extent_info *back,
501 struct extent_info *front)
502{
503 return (back->fofs + back->len == front->fofs &&
504 back->blk + back->len == front->blk);
505}
506
507static inline bool __is_back_mergeable(struct extent_info *cur,
508 struct extent_info *back)
509{
510 return __is_extent_mergeable(back, cur);
511}
512
513static inline bool __is_front_mergeable(struct extent_info *cur,
514 struct extent_info *front)
515{
516 return __is_extent_mergeable(cur, front);
517}
518
Jaegeuk Kimb56ab832016-06-30 19:09:37 -0700519extern void f2fs_mark_inode_dirty_sync(struct inode *);
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700520static inline void __try_update_largest_extent(struct inode *inode,
521 struct extent_tree *et, struct extent_node *en)
Chao Yu4abd3f52015-09-22 21:07:47 +0800522{
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700523 if (en->ei.len > et->largest.len) {
Chao Yu4abd3f52015-09-22 21:07:47 +0800524 et->largest = en->ei;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -0700525 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim205b9822016-05-20 09:52:20 -0700526 }
Chao Yu4abd3f52015-09-22 21:07:47 +0800527}
528
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900529struct f2fs_nm_info {
530 block_t nat_blkaddr; /* base disk address of NAT */
531 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900532 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900533 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900534 unsigned int ram_thresh; /* control the memory footprint */
Chao Yuea1a29a02015-10-12 17:08:48 +0800535 unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
Chao Yu2304cb02016-01-18 18:32:58 +0800536 unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900537
538 /* NAT cache management */
539 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700540 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kimec795412016-06-30 19:59:11 -0700541 struct percpu_rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900542 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700543 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800544 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900545
546 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900547 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900548 struct list_head free_nid_list; /* a list for free nids */
549 spinlock_t free_nid_list_lock; /* protect free nid list */
550 unsigned int fcnt; /* the number of free node id */
551 struct mutex build_lock; /* lock for build free nids */
552
553 /* for checkpoint */
554 char *nat_bitmap; /* NAT bitmap pointer */
555 int bitmap_size; /* bitmap size */
556};
557
558/*
559 * this structure is used as one of function parameters.
560 * all the information are dedicated to a given direct node block determined
561 * by the data offset in a file.
562 */
563struct dnode_of_data {
564 struct inode *inode; /* vfs inode pointer */
565 struct page *inode_page; /* its inode page, NULL is possible */
566 struct page *node_page; /* cached direct node page */
567 nid_t nid; /* node id of the direct node block */
568 unsigned int ofs_in_node; /* data offset in the node page */
569 bool inode_page_locked; /* inode page is locked or not */
Jaegeuk Kim93bae092015-12-22 12:59:54 -0800570 bool node_changed; /* is node block changed */
Chao Yu3cf45742016-01-26 15:40:44 +0800571 char cur_level; /* level of hole node page */
572 char max_level; /* level of current page located */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900573 block_t data_blkaddr; /* block address of the node block */
574};
575
576static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
577 struct page *ipage, struct page *npage, nid_t nid)
578{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900579 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900580 dn->inode = inode;
581 dn->inode_page = ipage;
582 dn->node_page = npage;
583 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900584}
585
586/*
587 * For SIT manager
588 *
589 * By default, there are 6 active log areas across the whole main area.
590 * When considering hot and cold data separation to reduce cleaning overhead,
591 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
592 * respectively.
593 * In the current design, you should not change the numbers intentionally.
594 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
595 * logs individually according to the underlying devices. (default: 6)
596 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
597 * data and 8 for node logs.
598 */
599#define NR_CURSEG_DATA_TYPE (3)
600#define NR_CURSEG_NODE_TYPE (3)
601#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
602
603enum {
604 CURSEG_HOT_DATA = 0, /* directory entry blocks */
605 CURSEG_WARM_DATA, /* data blocks */
606 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
607 CURSEG_HOT_NODE, /* direct node blocks of directory files */
608 CURSEG_WARM_NODE, /* direct node blocks of normal files */
609 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800610 NO_CHECK_TYPE,
611 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900612};
613
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900614struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900615 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800616 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900617 int ret;
618};
619
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800620struct flush_cmd_control {
621 struct task_struct *f2fs_issue_flush; /* flush thread */
622 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Jaegeuk Kim0a87f662016-05-23 12:04:56 -0700623 atomic_t submit_flush; /* # of issued flushes */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800624 struct llist_head issue_list; /* list for command issue */
625 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800626};
627
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900628struct f2fs_sm_info {
629 struct sit_info *sit_info; /* whole segment information */
630 struct free_segmap_info *free_info; /* free segment information */
631 struct dirty_seglist_info *dirty_info; /* dirty segment information */
632 struct curseg_info *curseg_array; /* active segment information */
633
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900634 block_t seg0_blkaddr; /* block address of 0'th segment */
635 block_t main_blkaddr; /* start block address of main area */
636 block_t ssa_blkaddr; /* start block address of SSA area */
637
638 unsigned int segment_count; /* total # of segments */
639 unsigned int main_segments; /* # of segments in main area */
640 unsigned int reserved_segments; /* # of reserved segments */
641 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900642
643 /* a threshold to reclaim prefree segments */
644 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900645
646 /* for small discard management */
647 struct list_head discard_list; /* 4KB discard list */
648 int nr_discards; /* # of discards in the list */
649 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900650
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800651 /* for batched trimming */
652 unsigned int trim_sections; /* # of sections to trim */
653
Chao Yu184a5cd2014-09-04 18:13:01 +0800654 struct list_head sit_entry_set; /* sit entry set list */
655
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900656 unsigned int ipu_policy; /* in-place-update policy */
657 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700658 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900659
660 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800661 struct flush_cmd_control *cmd_control_info;
662
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900663};
664
665/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900666 * For superblock
667 */
668/*
669 * COUNT_TYPE for monitoring
670 *
671 * f2fs monitors the number of several block types such as on-writeback,
672 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
673 */
674enum count_type {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900675 F2FS_DIRTY_DENTS,
Chao Yuc227f912015-12-16 13:09:20 +0800676 F2FS_DIRTY_DATA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900677 F2FS_DIRTY_NODES,
678 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800679 F2FS_INMEM_PAGES,
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700680 F2FS_DIRTY_IMETA,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900681 NR_COUNT_TYPE,
682};
683
684/*
arter97e1c42042014-08-06 23:22:50 +0900685 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900686 * The available types are:
687 * DATA User data pages. It operates as async mode.
688 * NODE Node pages. It operates as async mode.
689 * META FS metadata pages such as SIT, NAT, CP.
690 * NR_PAGE_TYPE The number of page types.
691 * META_FLUSH Make sure the previous pages are written
692 * with waiting the bio's completion
693 * ... Only can be used with META.
694 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900695#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900696enum page_type {
697 DATA,
698 NODE,
699 META,
700 NR_PAGE_TYPE,
701 META_FLUSH,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700702 INMEM, /* the below types are used by tracepoints only. */
703 INMEM_DROP,
Chao Yu28bc1062016-02-06 14:40:34 +0800704 INMEM_REVOKE,
Jaegeuk Kim8ce67cb2015-03-17 17:58:08 -0700705 IPU,
706 OPU,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900707};
708
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900709struct f2fs_io_info {
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700710 struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
Gu Zheng7e8f2302013-12-20 18:17:49 +0800711 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
Mike Christie04d328d2016-06-05 14:31:55 -0500712 int op; /* contains REQ_OP_ */
713 int op_flags; /* rq_flag_bits */
Chao Yu7a9d7542016-02-22 18:36:38 +0800714 block_t new_blkaddr; /* new block address to be written */
Chao Yu28bc1062016-02-06 14:40:34 +0800715 block_t old_blkaddr; /* old block address before Cow */
Jaegeuk Kim05ca3632015-04-23 14:38:15 -0700716 struct page *page; /* page to be written */
Jaegeuk Kim4375a332015-04-23 12:04:33 -0700717 struct page *encrypted_page; /* encrypted page */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900718};
719
Mike Christie04d328d2016-06-05 14:31:55 -0500720#define is_read_io(rw) (rw == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900721struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900722 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900723 struct bio *bio; /* bios to merge */
724 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900725 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800726 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900727};
728
Chao Yuc227f912015-12-16 13:09:20 +0800729enum inode_type {
730 DIR_INODE, /* for dirty dir inode */
731 FILE_INODE, /* for dirty regular/symlink inode */
Jaegeuk Kim0f18b462016-05-20 11:10:10 -0700732 DIRTY_META, /* for all dirtied inode metadata */
Chao Yuc227f912015-12-16 13:09:20 +0800733 NR_INODE_TYPE,
734};
735
Chao Yu67298802014-11-18 11:18:36 +0800736/* for inner inode cache management */
737struct inode_management {
738 struct radix_tree_root ino_root; /* ino entry array */
739 spinlock_t ino_lock; /* for ino entry lock */
740 struct list_head ino_list; /* inode list head */
741 unsigned long ino_num; /* number of entries */
742};
743
Chao Yucaf00472015-01-28 17:48:42 +0800744/* For s_flag in struct f2fs_sb_info */
745enum {
746 SBI_IS_DIRTY, /* dirty flag for checkpoint */
747 SBI_IS_CLOSE, /* specify unmounting */
748 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
749 SBI_POR_DOING, /* recovery is doing or not */
Jaegeuk Kimdf728b02016-03-23 17:05:27 -0700750 SBI_NEED_SB_WRITE, /* need to recover superblock */
Chao Yucaf00472015-01-28 17:48:42 +0800751};
752
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800753enum {
754 CP_TIME,
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800755 REQ_TIME,
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800756 MAX_TIME,
757};
758
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700759#ifdef CONFIG_F2FS_FS_ENCRYPTION
760#define F2FS_KEY_DESC_PREFIX "f2fs:"
761#define F2FS_KEY_DESC_PREFIX_SIZE 5
762#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900763struct f2fs_sb_info {
764 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900765 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900766 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yue8240f62015-12-15 17:19:26 +0800767 int valid_super_block; /* valid super block no */
Chao Yucaf00472015-01-28 17:48:42 +0800768 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900769
Jaegeuk Kimb5a7aef2016-05-04 22:05:01 -0700770#ifdef CONFIG_F2FS_FS_ENCRYPTION
771 u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE];
772 u8 key_prefix_size;
773#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900774 /* for node-related operations */
775 struct f2fs_nm_info *nm_info; /* node manager */
776 struct inode *node_inode; /* cache node blocks */
777
778 /* for segment-related operations */
779 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900780
781 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800782 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900783 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim7dfeaa32016-06-04 14:21:28 -0700784 struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900785
786 /* for checkpoint */
787 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
788 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900789 struct mutex cp_mutex; /* checkpoint procedure lock */
Jaegeuk Kimec795412016-06-30 19:59:11 -0700790 struct percpu_rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800791 struct rw_semaphore node_write; /* locking node writes */
Changman Leefb51b5e2013-11-07 12:48:25 +0900792 wait_queue_head_t cp_wait;
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800793 unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
794 long interval_time[MAX_TIME]; /* to store thresholds */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900795
Chao Yu67298802014-11-18 11:18:36 +0800796 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700797
798 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800799 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900800
Chao Yuc227f912015-12-16 13:09:20 +0800801 /* for inode management */
802 struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
803 spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900804
Chao Yu13054c52015-02-05 17:52:58 +0800805 /* for extent tree cache */
806 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
807 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
808 struct list_head extent_list; /* lru list for shrinker */
809 spinlock_t extent_lock; /* locking extent lru list */
Jaegeuk Kim7441cce2015-12-21 19:20:15 -0800810 atomic_t total_ext_tree; /* extent tree count */
Jaegeuk Kim137d09f2015-12-31 15:02:16 -0800811 struct list_head zombie_list; /* extent zombie tree list */
Jaegeuk Kim74fd8d92015-12-21 19:25:50 -0800812 atomic_t total_zombie_tree; /* extent zombie tree count */
Chao Yu13054c52015-02-05 17:52:58 +0800813 atomic_t total_ext_node; /* extent info count */
814
arter97e1c42042014-08-06 23:22:50 +0900815 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900816 unsigned int log_sectors_per_block; /* log2 sectors per block */
817 unsigned int log_blocksize; /* log2 block size */
818 unsigned int blocksize; /* block size */
819 unsigned int root_ino_num; /* root inode number*/
820 unsigned int node_ino_num; /* node inode number*/
821 unsigned int meta_ino_num; /* meta inode number*/
822 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
823 unsigned int blocks_per_seg; /* blocks per segment */
824 unsigned int segs_per_sec; /* segments per section */
825 unsigned int secs_per_zone; /* sections per zone */
826 unsigned int total_sections; /* total section count */
827 unsigned int total_node_count; /* total node block count */
828 unsigned int total_valid_node_count; /* valid node block count */
Chao Yue0afc4d2015-12-31 14:35:37 +0800829 loff_t max_file_blocks; /* max block index of file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900830 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900831 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900832
833 block_t user_block_count; /* # of user blocks */
834 block_t total_valid_block_count; /* # of valid blocks */
Jaegeuk Kima66cdd92015-04-30 22:37:50 -0700835 block_t discard_blks; /* discard command candidats */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900836 block_t last_valid_block_count; /* for recovery */
837 u32 s_next_generation; /* for NFS support */
Jaegeuk Kimf5730182016-05-17 16:23:36 -0700838 atomic_t nr_wb_bios; /* # of writeback bios */
Jaegeuk Kim523be8a2016-05-13 12:36:58 -0700839
840 /* # of pages, see count_type */
841 struct percpu_counter nr_pages[NR_COUNT_TYPE];
Jaegeuk Kim41382ec2016-05-16 11:06:50 -0700842 /* # of allocated blocks */
843 struct percpu_counter alloc_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900844
Jaegeuk Kim513c5f32016-05-16 11:42:32 -0700845 /* valid inode count */
846 struct percpu_counter total_valid_inode_count;
847
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900848 struct f2fs_mount_info mount_opt; /* mount options */
849
850 /* for cleaning operations */
851 struct mutex gc_mutex; /* mutex for GC */
852 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900853 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900854
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900855 /* maximum # of trials to find a victim segment for SSR and GC */
856 unsigned int max_victim_search;
857
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900858 /*
859 * for stat information.
860 * one is for the LFS mode, and the other is for the SSR mode.
861 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900862#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900863 struct f2fs_stat_info *stat_info; /* FS status information */
864 unsigned int segment_count[2]; /* # of allocated segments */
865 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900866 atomic_t inplace_count; /* # of inplace update */
Chao Yu5b7ee372015-09-30 17:38:48 +0800867 atomic64_t total_hit_ext; /* # of lookup extent cache */
868 atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
869 atomic64_t read_hit_largest; /* # of hit largest extent node */
870 atomic64_t read_hit_cached; /* # of hit cached extent node */
Chao Yud5e8f6c2015-07-15 17:28:53 +0800871 atomic_t inline_xattr; /* # of inline_xattr inodes */
Chao Yu03e14d52014-12-08 19:08:20 +0800872 atomic_t inline_inode; /* # of inline_data inodes */
873 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900874 int bg_gc; /* background gc calls */
Chao Yu33fbd512015-12-17 17:14:44 +0800875 unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900876#endif
877 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900878 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900879
880 /* For sysfs suppport */
881 struct kobject s_kobj;
882 struct completion s_kobj_unregister;
Jaegeuk Kim2658e502015-06-19 12:01:21 -0700883
884 /* For shrinker support */
885 struct list_head s_list;
886 struct mutex umount_mutex;
887 unsigned int shrinker_run_no;
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800888
889 /* For write statistics */
890 u64 sectors_written_start;
891 u64 kbytes_written;
Keith Mok43b65732016-03-02 12:04:24 -0800892
893 /* Reference to checksum algorithm driver via cryptoapi */
894 struct crypto_shash *s_chksum_driver;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900895};
896
Shuoran Liu8f1dbbb2016-01-27 09:57:30 +0800897/* For write statistics. Suppose sector size is 512 bytes,
898 * and the return value is in kbytes. s is of struct f2fs_sb_info.
899 */
900#define BD_PART_WRITTEN(s) \
901(((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \
902 s->sectors_written_start) >> 1)
903
Jaegeuk Kim6beceb52016-01-08 15:51:50 -0800904static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
905{
906 sbi->last_time[type] = jiffies;
907}
908
909static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
910{
911 struct timespec ts = {sbi->interval_time[type], 0};
912 unsigned long interval = timespec_to_jiffies(&ts);
913
914 return time_after(jiffies, sbi->last_time[type] + interval);
915}
916
Jaegeuk Kimd0239e12016-01-08 16:57:48 -0800917static inline bool is_idle(struct f2fs_sb_info *sbi)
918{
919 struct block_device *bdev = sbi->sb->s_bdev;
920 struct request_queue *q = bdev_get_queue(bdev);
921 struct request_list *rl = &q->root_rl;
922
923 if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
924 return 0;
925
926 return f2fs_time_over(sbi, REQ_TIME);
927}
928
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900929/*
930 * Inline functions
931 */
Keith Mok43b65732016-03-02 12:04:24 -0800932static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
933 unsigned int length)
934{
935 SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver);
936 u32 *ctx = (u32 *)shash_desc_ctx(shash);
937 int err;
938
939 shash->tfm = sbi->s_chksum_driver;
940 shash->flags = 0;
941 *ctx = F2FS_SUPER_MAGIC;
942
943 err = crypto_shash_update(shash, address, length);
944 BUG_ON(err);
945
946 return *ctx;
947}
948
949static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
950 void *buf, size_t buf_size)
951{
952 return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
953}
954
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900955static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
956{
957 return container_of(inode, struct f2fs_inode_info, vfs_inode);
958}
959
960static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
961{
962 return sb->s_fs_info;
963}
964
Jaegeuk Kim40813632014-09-02 15:31:18 -0700965static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
966{
967 return F2FS_SB(inode->i_sb);
968}
969
970static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
971{
972 return F2FS_I_SB(mapping->host);
973}
974
975static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
976{
977 return F2FS_M_SB(page->mapping);
978}
979
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900980static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
981{
982 return (struct f2fs_super_block *)(sbi->raw_super);
983}
984
985static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
986{
987 return (struct f2fs_checkpoint *)(sbi->ckpt);
988}
989
Gu Zheng45590712013-07-15 17:57:38 +0800990static inline struct f2fs_node *F2FS_NODE(struct page *page)
991{
992 return (struct f2fs_node *)page_address(page);
993}
994
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900995static inline struct f2fs_inode *F2FS_INODE(struct page *page)
996{
997 return &((struct f2fs_node *)page_address(page))->i;
998}
999
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001000static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1001{
1002 return (struct f2fs_nm_info *)(sbi->nm_info);
1003}
1004
1005static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1006{
1007 return (struct f2fs_sm_info *)(sbi->sm_info);
1008}
1009
1010static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1011{
1012 return (struct sit_info *)(SM_I(sbi)->sit_info);
1013}
1014
1015static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1016{
1017 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1018}
1019
1020static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1021{
1022 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1023}
1024
Gu Zheng9df27d92014-01-20 18:37:04 +08001025static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1026{
1027 return sbi->meta_inode->i_mapping;
1028}
1029
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +09001030static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1031{
1032 return sbi->node_inode->i_mapping;
1033}
1034
Chao Yucaf00472015-01-28 17:48:42 +08001035static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001036{
Chao Yucaf00472015-01-28 17:48:42 +08001037 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001038}
1039
Chao Yucaf00472015-01-28 17:48:42 +08001040static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001041{
Chao Yucaf00472015-01-28 17:48:42 +08001042 sbi->s_flag |= (0x01 << type);
1043}
1044
1045static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1046{
1047 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001048}
1049
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001050static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1051{
1052 return le64_to_cpu(cp->checkpoint_ver);
1053}
1054
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001055static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1056{
1057 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1058 return ckpt_flags & f;
1059}
1060
1061static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1062{
1063 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1064 ckpt_flags |= f;
1065 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1066}
1067
1068static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1069{
1070 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1071 ckpt_flags &= (~f);
1072 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1073}
1074
Gu Zhenge4795562013-09-27 18:08:30 +08001075static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001076{
Jaegeuk Kimec795412016-06-30 19:59:11 -07001077 percpu_down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001078}
1079
Gu Zhenge4795562013-09-27 18:08:30 +08001080static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001081{
Jaegeuk Kimec795412016-06-30 19:59:11 -07001082 percpu_up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001083}
1084
Gu Zhenge4795562013-09-27 18:08:30 +08001085static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001086{
Jaegeuk Kimec795412016-06-30 19:59:11 -07001087 percpu_down_write(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +09001088}
1089
Gu Zhenge4795562013-09-27 18:08:30 +08001090static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +09001091{
Jaegeuk Kimec795412016-06-30 19:59:11 -07001092 percpu_up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001093}
1094
Jaegeuk Kim119ee912015-01-29 11:45:33 -08001095static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1096{
1097 int reason = CP_SYNC;
1098
1099 if (test_opt(sbi, FASTBOOT))
1100 reason = CP_FASTBOOT;
1101 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1102 reason = CP_UMOUNT;
1103 return reason;
1104}
1105
1106static inline bool __remain_node_summaries(int reason)
1107{
1108 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
1109}
1110
1111static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1112{
1113 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
1114 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
1115}
1116
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001117/*
1118 * Check whether the given nid is within node id range.
1119 */
Namjae Jeon064e0822013-03-17 17:27:20 +09001120static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001121{
Chao Yud6b7d4b2014-06-12 13:23:41 +08001122 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
1123 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +08001124 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +09001125 return -EINVAL;
1126 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001127}
1128
1129#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
1130
1131/*
1132 * Check whether the inode has blocks or not
1133 */
1134static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1135{
1136 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -06001137 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001138 else
Chris Fries6c311ec2014-01-17 14:44:39 -06001139 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001140}
1141
Chao Yu4bc8e9b2014-03-17 16:35:06 +08001142static inline bool f2fs_has_xattr_block(unsigned int ofs)
1143{
1144 return ofs == XATTR_NODE_OFFSET;
1145}
1146
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001147static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001148static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
Chao Yu46008c62016-05-09 19:56:30 +08001149 struct inode *inode, blkcnt_t *count)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001150{
Jaegeuk Kimdd11a5d2016-07-19 19:20:11 -07001151 blkcnt_t diff;
1152
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001153#ifdef CONFIG_F2FS_FAULT_INJECTION
Jaegeuk Kim2555a2d2016-06-30 19:02:06 -07001154 if (time_to_inject(FAULT_BLOCK))
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001155 return false;
Jaegeuk Kimcb789422016-04-29 16:29:22 -07001156#endif
Jaegeuk Kimdd11a5d2016-07-19 19:20:11 -07001157 /*
1158 * let's increase this in prior to actual block count change in order
1159 * for f2fs_sync_file to avoid data races when deciding checkpoint.
1160 */
1161 percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
Chao Yucfb271d2013-12-05 17:15:22 +08001162
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001163 spin_lock(&sbi->stat_lock);
Jaegeuk Kim2555a2d2016-06-30 19:02:06 -07001164 sbi->total_valid_block_count += (block_t)(*count);
1165 if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) {
Jaegeuk Kimdd11a5d2016-07-19 19:20:11 -07001166 diff = sbi->total_valid_block_count - sbi->user_block_count;
1167 *count -= diff;
Jaegeuk Kim2555a2d2016-06-30 19:02:06 -07001168 sbi->total_valid_block_count = sbi->user_block_count;
Chao Yu46008c62016-05-09 19:56:30 +08001169 if (!*count) {
1170 spin_unlock(&sbi->stat_lock);
Jaegeuk Kimdd11a5d2016-07-19 19:20:11 -07001171 percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
Chao Yu46008c62016-05-09 19:56:30 +08001172 return false;
1173 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001174 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001175 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001176
Jaegeuk Kim2555a2d2016-06-30 19:02:06 -07001177 f2fs_i_blocks_write(inode, *count, true);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001178 return true;
1179}
1180
Gu Zhengda19b0d2013-11-19 18:03:27 +08001181static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001182 struct inode *inode,
1183 blkcnt_t count)
1184{
1185 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001186 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1187 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001188 sbi->total_valid_block_count -= (block_t)count;
1189 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim2555a2d2016-06-30 19:02:06 -07001190 f2fs_i_blocks_write(inode, count, false);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001191}
1192
1193static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
1194{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001195 percpu_counter_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +08001196 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001197}
1198
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001199static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001200{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001201 percpu_counter_inc(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001202 inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1203 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001204}
1205
1206static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
1207{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001208 percpu_counter_dec(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001209}
1210
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001211static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001212{
Chao Yu5ac9f362015-06-29 18:14:10 +08001213 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1214 !S_ISLNK(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +09001215 return;
1216
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001217 percpu_counter_dec(&F2FS_I(inode)->dirty_pages);
Chao Yuc227f912015-12-16 13:09:20 +08001218 dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
1219 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001220}
1221
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001222static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001223{
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001224 return percpu_counter_sum_positive(&sbi->nr_pages[count_type]);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001225}
1226
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001227static inline s64 get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001228{
Jaegeuk Kim1beba1b2016-05-13 12:47:11 -07001229 return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +09001230}
1231
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001232static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
1233{
Chao Yu3519e3f2015-12-01 11:56:52 +08001234 unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07001235 unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
1236 sbi->log_blocks_per_seg;
1237
1238 return segs / sbi->segs_per_sec;
Namjae Jeon5ac206c2013-02-02 23:52:59 +09001239}
1240
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001241static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
1242{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001243 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001244}
1245
1246static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
1247{
1248 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1249
1250 /* return NAT or SIT bitmap */
1251 if (flag == NAT_BITMAP)
1252 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
1253 else if (flag == SIT_BITMAP)
1254 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
1255
1256 return 0;
1257}
1258
Wanpeng Li55141482015-02-26 07:57:20 +08001259static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
1260{
1261 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
1262}
1263
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001264static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
1265{
1266 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +09001267 int offset;
1268
Wanpeng Li55141482015-02-26 07:57:20 +08001269 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +09001270 if (flag == NAT_BITMAP)
1271 return &ckpt->sit_nat_version_bitmap;
1272 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -07001273 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001274 } else {
1275 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001276 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001277 return &ckpt->sit_nat_version_bitmap + offset;
1278 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001279}
1280
1281static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1282{
1283 block_t start_addr;
1284 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001285 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001286
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001287 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001288
1289 /*
1290 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001291 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001292 */
1293 if (!(ckpt_version & 1))
1294 start_addr += sbi->blocks_per_seg;
1295
1296 return start_addr;
1297}
1298
1299static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1300{
1301 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1302}
1303
1304static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001305 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001306{
1307 block_t valid_block_count;
1308 unsigned int valid_node_count;
1309
1310 spin_lock(&sbi->stat_lock);
1311
Gu Zhengef86d702013-11-19 18:03:38 +08001312 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001313 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001314 spin_unlock(&sbi->stat_lock);
1315 return false;
1316 }
1317
Gu Zhengef86d702013-11-19 18:03:38 +08001318 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001319 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001320 spin_unlock(&sbi->stat_lock);
1321 return false;
1322 }
1323
1324 if (inode)
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001325 f2fs_i_blocks_write(inode, 1, true);
Gu Zhengef86d702013-11-19 18:03:38 +08001326
Gu Zhengef86d702013-11-19 18:03:38 +08001327 sbi->total_valid_node_count++;
1328 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001329 spin_unlock(&sbi->stat_lock);
1330
Jaegeuk Kim41382ec2016-05-16 11:06:50 -07001331 percpu_counter_inc(&sbi->alloc_valid_block_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001332 return true;
1333}
1334
1335static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001336 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001337{
1338 spin_lock(&sbi->stat_lock);
1339
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001340 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1341 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1342 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001343
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001344 f2fs_i_blocks_write(inode, 1, false);
Gu Zhengef86d702013-11-19 18:03:38 +08001345 sbi->total_valid_node_count--;
1346 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001347
1348 spin_unlock(&sbi->stat_lock);
1349}
1350
1351static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1352{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001353 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001354}
1355
1356static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1357{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001358 percpu_counter_inc(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001359}
1360
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001361static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001362{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001363 percpu_counter_dec(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001364}
1365
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001366static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001367{
Jaegeuk Kim513c5f32016-05-16 11:42:32 -07001368 return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001369}
1370
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001371static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
1372 pgoff_t index, bool for_write)
1373{
Jaegeuk Kimc41f3cc32016-04-29 16:17:09 -07001374#ifdef CONFIG_F2FS_FAULT_INJECTION
1375 struct page *page = find_lock_page(mapping, index);
1376 if (page)
1377 return page;
1378
1379 if (time_to_inject(FAULT_PAGE_ALLOC))
1380 return NULL;
1381#endif
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07001382 if (!for_write)
1383 return grab_cache_page(mapping, index);
1384 return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
1385}
1386
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07001387static inline void f2fs_copy_page(struct page *src, struct page *dst)
1388{
1389 char *src_kaddr = kmap(src);
1390 char *dst_kaddr = kmap(dst);
1391
1392 memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
1393 kunmap(dst);
1394 kunmap(src);
1395}
1396
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001397static inline void f2fs_put_page(struct page *page, int unlock)
1398{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001399 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001400 return;
1401
1402 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001403 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001404 unlock_page(page);
1405 }
Kirill A. Shutemov09cbfea2016-04-01 15:29:47 +03001406 put_page(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001407}
1408
1409static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1410{
1411 if (dn->node_page)
1412 f2fs_put_page(dn->node_page, 1);
1413 if (dn->inode_page && dn->node_page != dn->inode_page)
1414 f2fs_put_page(dn->inode_page, 0);
1415 dn->node_page = NULL;
1416 dn->inode_page = NULL;
1417}
1418
1419static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001420 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001421{
Gu Zhenge8512d22014-03-07 18:43:28 +08001422 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001423}
1424
Gu Zheng7bd59382013-10-22 14:52:26 +08001425static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1426 gfp_t flags)
1427{
1428 void *entry;
Gu Zheng7bd59382013-10-22 14:52:26 +08001429
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001430 entry = kmem_cache_alloc(cachep, flags);
1431 if (!entry)
1432 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
Gu Zheng7bd59382013-10-22 14:52:26 +08001433 return entry;
1434}
1435
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001436static inline struct bio *f2fs_bio_alloc(int npages)
1437{
1438 struct bio *bio;
1439
1440 /* No failure on bio allocation */
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001441 bio = bio_alloc(GFP_NOIO, npages);
Jaegeuk Kim80c54502015-08-20 08:51:56 -07001442 if (!bio)
1443 bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
Jaegeuk Kim740432f2015-08-14 11:43:56 -07001444 return bio;
1445}
1446
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001447static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1448 unsigned long index, void *item)
1449{
1450 while (radix_tree_insert(root, index, item))
1451 cond_resched();
1452}
1453
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001454#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1455
1456static inline bool IS_INODE(struct page *page)
1457{
Gu Zheng45590712013-07-15 17:57:38 +08001458 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001459 return RAW_IS_INODE(p);
1460}
1461
1462static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1463{
1464 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1465}
1466
1467static inline block_t datablock_addr(struct page *node_page,
1468 unsigned int offset)
1469{
1470 struct f2fs_node *raw_node;
1471 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001472 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001473 addr_array = blkaddr_in_node(raw_node);
1474 return le32_to_cpu(addr_array[offset]);
1475}
1476
1477static inline int f2fs_test_bit(unsigned int nr, char *addr)
1478{
1479 int mask;
1480
1481 addr += (nr >> 3);
1482 mask = 1 << (7 - (nr & 0x07));
1483 return mask & *addr;
1484}
1485
Jaegeuk Kima66cdd92015-04-30 22:37:50 -07001486static inline void f2fs_set_bit(unsigned int nr, char *addr)
1487{
1488 int mask;
1489
1490 addr += (nr >> 3);
1491 mask = 1 << (7 - (nr & 0x07));
1492 *addr |= mask;
1493}
1494
1495static inline void f2fs_clear_bit(unsigned int nr, char *addr)
1496{
1497 int mask;
1498
1499 addr += (nr >> 3);
1500 mask = 1 << (7 - (nr & 0x07));
1501 *addr &= ~mask;
1502}
1503
Gu Zheng52aca072014-10-20 17:45:51 +08001504static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001505{
1506 int mask;
1507 int ret;
1508
1509 addr += (nr >> 3);
1510 mask = 1 << (7 - (nr & 0x07));
1511 ret = mask & *addr;
1512 *addr |= mask;
1513 return ret;
1514}
1515
Gu Zheng52aca072014-10-20 17:45:51 +08001516static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001517{
1518 int mask;
1519 int ret;
1520
1521 addr += (nr >> 3);
1522 mask = 1 << (7 - (nr & 0x07));
1523 ret = mask & *addr;
1524 *addr &= ~mask;
1525 return ret;
1526}
1527
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001528static inline void f2fs_change_bit(unsigned int nr, char *addr)
1529{
1530 int mask;
1531
1532 addr += (nr >> 3);
1533 mask = 1 << (7 - (nr & 0x07));
1534 *addr ^= mask;
1535}
1536
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001537/* used for f2fs_inode_info->flags */
1538enum {
1539 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001540 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001541 FI_AUTO_RECOVER, /* indicate inode is recoverable */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001542 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001543 FI_INC_LINK, /* need to increment i_nlink */
1544 FI_ACL_MODE, /* indicate acl mode */
1545 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kimc9b63bd2015-06-23 10:36:08 -07001546 FI_FREE_NID, /* free allocated nide */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001547 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001548 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001549 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001550 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001551 FI_APPEND_WRITE, /* inode has appended data */
1552 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001553 FI_NEED_IPU, /* used for ipu per file */
1554 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001555 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001556 FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001557 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001558 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001559 FI_INLINE_DOTS, /* indicate inline dot dentries */
Chao Yud323d002015-10-27 09:53:45 +08001560 FI_DO_DEFRAG, /* indicate defragment is running */
Chao Yuc227f912015-12-16 13:09:20 +08001561 FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001562};
1563
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001564static inline void __mark_inode_dirty_flag(struct inode *inode,
1565 int flag, bool set)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001566{
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001567 switch (flag) {
1568 case FI_INLINE_XATTR:
1569 case FI_INLINE_DATA:
1570 case FI_INLINE_DENTRY:
1571 if (set)
1572 return;
1573 case FI_DATA_EXIST:
1574 case FI_INLINE_DOTS:
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001575 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001576 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001577}
1578
Jaegeuk Kim91942322016-05-20 10:13:22 -07001579static inline void set_inode_flag(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001580{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001581 if (!test_bit(flag, &F2FS_I(inode)->flags))
1582 set_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001583 __mark_inode_dirty_flag(inode, flag, true);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001584}
1585
Jaegeuk Kim91942322016-05-20 10:13:22 -07001586static inline int is_inode_flag_set(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001587{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001588 return test_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001589}
1590
Jaegeuk Kim91942322016-05-20 10:13:22 -07001591static inline void clear_inode_flag(struct inode *inode, int flag)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001592{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001593 if (test_bit(flag, &F2FS_I(inode)->flags))
1594 clear_bit(flag, &F2FS_I(inode)->flags);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001595 __mark_inode_dirty_flag(inode, flag, false);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001596}
1597
Jaegeuk Kim91942322016-05-20 10:13:22 -07001598static inline void set_acl_inode(struct inode *inode, umode_t mode)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001599{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001600 F2FS_I(inode)->i_acl_mode = mode;
1601 set_inode_flag(inode, FI_ACL_MODE);
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001602 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001603}
1604
Jaegeuk Kima1961242016-05-20 09:43:20 -07001605static inline void f2fs_i_links_write(struct inode *inode, bool inc)
1606{
1607 if (inc)
1608 inc_nlink(inode);
1609 else
1610 drop_nlink(inode);
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001611 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kima1961242016-05-20 09:43:20 -07001612}
1613
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001614static inline void f2fs_i_blocks_write(struct inode *inode,
1615 blkcnt_t diff, bool add)
1616{
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001617 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1618 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1619
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001620 inode->i_blocks = add ? inode->i_blocks + diff :
1621 inode->i_blocks - diff;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001622 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001623 if (clean || recover)
1624 set_inode_flag(inode, FI_AUTO_RECOVER);
Jaegeuk Kim8edd03c2016-05-20 09:26:06 -07001625}
1626
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001627static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
1628{
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001629 bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
1630 bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
1631
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001632 if (i_size_read(inode) == i_size)
1633 return;
1634
1635 i_size_write(inode, i_size);
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001636 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001637 if (clean || recover)
1638 set_inode_flag(inode, FI_AUTO_RECOVER);
1639}
1640
1641static inline bool f2fs_skip_inode_update(struct inode *inode)
1642{
1643 if (!is_inode_flag_set(inode, FI_AUTO_RECOVER))
1644 return false;
1645 return F2FS_I(inode)->last_disk_size == i_size_read(inode);
Jaegeuk Kimfc9581c2016-05-20 09:22:03 -07001646}
1647
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001648static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
1649{
1650 F2FS_I(inode)->i_current_depth = depth;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001651 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001652}
1653
1654static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
1655{
1656 F2FS_I(inode)->i_xattr_nid = xnid;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001657 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001658}
1659
1660static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
1661{
1662 F2FS_I(inode)->i_pino = pino;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001663 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001664}
1665
Jaegeuk Kim91942322016-05-20 10:13:22 -07001666static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001667{
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001668 struct f2fs_inode_info *fi = F2FS_I(inode);
1669
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001670 if (ri->i_inline & F2FS_INLINE_XATTR)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001671 set_bit(FI_INLINE_XATTR, &fi->flags);
Huajun Li1001b342013-11-10 23:13:16 +08001672 if (ri->i_inline & F2FS_INLINE_DATA)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001673 set_bit(FI_INLINE_DATA, &fi->flags);
Chao Yu34d67de2014-09-24 18:15:19 +08001674 if (ri->i_inline & F2FS_INLINE_DENTRY)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001675 set_bit(FI_INLINE_DENTRY, &fi->flags);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001676 if (ri->i_inline & F2FS_DATA_EXIST)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001677 set_bit(FI_DATA_EXIST, &fi->flags);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001678 if (ri->i_inline & F2FS_INLINE_DOTS)
Jaegeuk Kim205b9822016-05-20 09:52:20 -07001679 set_bit(FI_INLINE_DOTS, &fi->flags);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001680}
1681
Jaegeuk Kim91942322016-05-20 10:13:22 -07001682static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001683{
1684 ri->i_inline = 0;
1685
Jaegeuk Kim91942322016-05-20 10:13:22 -07001686 if (is_inode_flag_set(inode, FI_INLINE_XATTR))
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001687 ri->i_inline |= F2FS_INLINE_XATTR;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001688 if (is_inode_flag_set(inode, FI_INLINE_DATA))
Huajun Li1001b342013-11-10 23:13:16 +08001689 ri->i_inline |= F2FS_INLINE_DATA;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001690 if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
Chao Yu34d67de2014-09-24 18:15:19 +08001691 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001692 if (is_inode_flag_set(inode, FI_DATA_EXIST))
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001693 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim91942322016-05-20 10:13:22 -07001694 if (is_inode_flag_set(inode, FI_INLINE_DOTS))
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001695 ri->i_inline |= F2FS_INLINE_DOTS;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001696}
1697
Chao Yu987c7c32014-03-12 15:59:03 +08001698static inline int f2fs_has_inline_xattr(struct inode *inode)
1699{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001700 return is_inode_flag_set(inode, FI_INLINE_XATTR);
Chao Yu987c7c32014-03-12 15:59:03 +08001701}
1702
Chao Yu81ca7352016-01-26 15:39:35 +08001703static inline unsigned int addrs_per_inode(struct inode *inode)
Jaegeuk Kimde936532013-08-12 21:08:03 +09001704{
Chao Yu81ca7352016-01-26 15:39:35 +08001705 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001706 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1707 return DEF_ADDRS_PER_INODE;
1708}
1709
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001710static inline void *inline_xattr_addr(struct page *page)
1711{
Chao Yu695fd1e2014-02-27 19:52:21 +08001712 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001713 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1714 F2FS_INLINE_XATTR_ADDRS]);
1715}
1716
1717static inline int inline_xattr_size(struct inode *inode)
1718{
Chao Yu987c7c32014-03-12 15:59:03 +08001719 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001720 return F2FS_INLINE_XATTR_ADDRS << 2;
1721 else
1722 return 0;
1723}
1724
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001725static inline int f2fs_has_inline_data(struct inode *inode)
1726{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001727 return is_inode_flag_set(inode, FI_INLINE_DATA);
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001728}
1729
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001730static inline void f2fs_clear_inline_inode(struct inode *inode)
1731{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001732 clear_inode_flag(inode, FI_INLINE_DATA);
1733 clear_inode_flag(inode, FI_DATA_EXIST);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001734}
1735
1736static inline int f2fs_exist_data(struct inode *inode)
1737{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001738 return is_inode_flag_set(inode, FI_DATA_EXIST);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001739}
1740
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001741static inline int f2fs_has_inline_dots(struct inode *inode)
1742{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001743 return is_inode_flag_set(inode, FI_INLINE_DOTS);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001744}
1745
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001746static inline bool f2fs_is_atomic_file(struct inode *inode)
1747{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001748 return is_inode_flag_set(inode, FI_ATOMIC_FILE);
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001749}
1750
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001751static inline bool f2fs_is_volatile_file(struct inode *inode)
1752{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001753 return is_inode_flag_set(inode, FI_VOLATILE_FILE);
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001754}
1755
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001756static inline bool f2fs_is_first_block_written(struct inode *inode)
1757{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001758 return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
Jaegeuk Kim3c6c2be2015-03-17 17:16:35 -07001759}
1760
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001761static inline bool f2fs_is_drop_cache(struct inode *inode)
1762{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001763 return is_inode_flag_set(inode, FI_DROP_CACHE);
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001764}
1765
Huajun Li1001b342013-11-10 23:13:16 +08001766static inline void *inline_data_addr(struct page *page)
1767{
Chao Yu695fd1e2014-02-27 19:52:21 +08001768 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001769 return (void *)&(ri->i_addr[1]);
1770}
1771
Chao Yu34d67de2014-09-24 18:15:19 +08001772static inline int f2fs_has_inline_dentry(struct inode *inode)
1773{
Jaegeuk Kim91942322016-05-20 10:13:22 -07001774 return is_inode_flag_set(inode, FI_INLINE_DENTRY);
Chao Yu34d67de2014-09-24 18:15:19 +08001775}
1776
Jaegeuk Kim9486ba42014-11-21 16:36:28 -08001777static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1778{
1779 if (!f2fs_has_inline_dentry(dir))
1780 kunmap(page);
1781}
1782
Jaegeuk Kimb5492af2015-04-20 13:44:41 -07001783static inline int is_file(struct inode *inode, int type)
1784{
1785 return F2FS_I(inode)->i_advise & type;
1786}
1787
1788static inline void set_file(struct inode *inode, int type)
1789{
1790 F2FS_I(inode)->i_advise |= type;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001791 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kimb5492af2015-04-20 13:44:41 -07001792}
1793
1794static inline void clear_file(struct inode *inode, int type)
1795{
1796 F2FS_I(inode)->i_advise &= ~type;
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001797 f2fs_mark_inode_dirty_sync(inode);
Jaegeuk Kimb5492af2015-04-20 13:44:41 -07001798}
1799
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001800static inline int f2fs_readonly(struct super_block *sb)
1801{
1802 return sb->s_flags & MS_RDONLY;
1803}
1804
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001805static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1806{
1807 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1808}
1809
Jaegeuk Kimeaa693f2015-04-26 00:15:29 -07001810static inline bool is_dot_dotdot(const struct qstr *str)
1811{
1812 if (str->len == 1 && str->name[0] == '.')
1813 return true;
1814
1815 if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
1816 return true;
1817
1818 return false;
1819}
1820
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001821static inline bool f2fs_may_extent_tree(struct inode *inode)
1822{
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001823 if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
Jaegeuk Kim91942322016-05-20 10:13:22 -07001824 is_inode_flag_set(inode, FI_NO_EXTENT))
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001825 return false;
1826
Al Viro886f56f2015-12-05 03:56:06 -05001827 return S_ISREG(inode->i_mode);
Jaegeuk Kim3e72f722015-06-19 17:53:26 -07001828}
1829
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001830static inline void *f2fs_kmalloc(size_t size, gfp_t flags)
1831{
Jaegeuk Kim2c63fea2016-04-29 15:49:56 -07001832#ifdef CONFIG_F2FS_FAULT_INJECTION
1833 if (time_to_inject(FAULT_KMALLOC))
1834 return NULL;
1835#endif
Jaegeuk Kim0414b002016-04-29 15:16:42 -07001836 return kmalloc(size, flags);
1837}
1838
Jaegeuk Kim39307a82015-09-22 13:50:47 -07001839static inline void *f2fs_kvmalloc(size_t size, gfp_t flags)
1840{
1841 void *ret;
1842
1843 ret = kmalloc(size, flags | __GFP_NOWARN);
1844 if (!ret)
1845 ret = __vmalloc(size, flags, PAGE_KERNEL);
1846 return ret;
1847}
1848
1849static inline void *f2fs_kvzalloc(size_t size, gfp_t flags)
1850{
1851 void *ret;
1852
1853 ret = kzalloc(size, flags | __GFP_NOWARN);
1854 if (!ret)
1855 ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
1856 return ret;
1857}
1858
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001859#define get_inode_mode(i) \
Jaegeuk Kim91942322016-05-20 10:13:22 -07001860 ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001861 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1862
Chao Yu267378d2014-04-23 14:10:24 +08001863/* get offset of first page in next direct node */
Chao Yu81ca7352016-01-26 15:39:35 +08001864#define PGOFS_OF_NEXT_DNODE(pgofs, inode) \
1865 ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \
1866 (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \
1867 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode))
Chao Yu267378d2014-04-23 14:10:24 +08001868
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001869/*
1870 * file.c
1871 */
1872int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1873void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001874int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim9a449e92016-06-02 13:49:38 -07001875int f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001876int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001877int f2fs_setattr(struct dentry *, struct iattr *);
1878int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001879int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001880long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001881long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001882
1883/*
1884 * inode.c
1885 */
1886void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001887struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001888int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim12719ae2016-01-07 13:23:12 -08001889int update_inode(struct inode *, struct page *);
1890int update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001891int f2fs_write_inode(struct inode *, struct writeback_control *);
1892void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001893void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001894
1895/*
1896 * namei.c
1897 */
1898struct dentry *f2fs_get_parent(struct dentry *child);
1899
1900/*
1901 * dir.c
1902 */
Chao Yudbeacf02014-09-24 18:17:04 +08001903extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001904void set_de_type(struct f2fs_dir_entry *, umode_t);
Chao Yu675f10b2016-02-22 18:29:18 +08001905unsigned char get_de_type(struct f2fs_dir_entry *);
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001906struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *,
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07001907 f2fs_hash_t, int *, struct f2fs_dentry_ptr *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001908bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07001909 unsigned int, struct fscrypt_str *);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001910void do_make_empty_dir(struct inode *, struct inode *,
1911 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001912struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001913 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001914void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001915int room_for_filename(const void *, int, int);
Jaegeuk Kim9f7c45c2016-06-01 21:18:25 -07001916void f2fs_drop_nlink(struct inode *, struct inode *);
Al Viro185de682016-07-20 23:07:13 -04001917struct f2fs_dir_entry *f2fs_find_entry(struct inode *, const struct qstr *,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001918 struct page **);
1919struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
Linus Torvalds835c92d2016-08-06 09:49:02 -04001920ino_t f2fs_inode_by_name(struct inode *, const struct qstr *, struct page **);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001921void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1922 struct page *, struct inode *);
Jaegeuk Kime7d55452015-04-29 17:02:18 -07001923int update_dent_inode(struct inode *, struct inode *, const struct qstr *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001924void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *,
Chao Yu3b4d7322015-02-16 16:17:20 +08001925 const struct qstr *, f2fs_hash_t , unsigned int);
Chao Yu675f10b2016-02-22 18:29:18 +08001926int f2fs_add_regular_entry(struct inode *, const struct qstr *,
1927 struct inode *, nid_t, umode_t);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001928int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t,
1929 umode_t);
Chao Yudbeacf02014-09-24 18:17:04 +08001930void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1931 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001932int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001933bool f2fs_empty_dir(struct inode *);
1934
Al Virob7f7a5e2013-01-25 16:15:43 -05001935static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1936{
David Howells2b0143b2015-03-17 22:25:59 +00001937 return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
Jaegeuk Kim510022a2015-03-30 15:07:16 -07001938 inode, inode->i_ino, inode->i_mode);
Al Virob7f7a5e2013-01-25 16:15:43 -05001939}
1940
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001941/*
1942 * super.c
1943 */
Jaegeuk Kimb56ab832016-06-30 19:09:37 -07001944int f2fs_inode_dirtied(struct inode *);
Jaegeuk Kim0f18b462016-05-20 11:10:10 -07001945void f2fs_inode_synced(struct inode *);
Chao Yuc5bda1c2015-06-08 13:28:03 +08001946int f2fs_commit_super(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001947int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001948extern __printf(3, 4)
1949void f2fs_msg(struct super_block *, const char *, const char *, ...);
Shawn Lin984ec632016-02-17 11:26:32 +08001950int sanity_check_ckpt(struct f2fs_sb_info *sbi);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001951
1952/*
1953 * hash.c
1954 */
Gu Zhengeee61602014-06-24 18:21:23 +08001955f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001956
1957/*
1958 * node.c
1959 */
1960struct dnode_of_data;
1961struct node_info;
1962
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001963bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim2dcf51a2015-04-29 18:31:19 -07001964int need_dentry_mark(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001965bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001966bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001967void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
Chao Yu3cf45742016-01-26 15:40:44 +08001968pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001969int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1970int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001971int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001972int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Chao Yu13ec7292015-08-24 17:40:45 +08001973int remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001974struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001975struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001976void ra_node_page(struct f2fs_sb_info *, nid_t);
1977struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1978struct page *get_node_page_ra(struct page *, int);
Chao Yuda011cc2016-04-27 21:40:15 +08001979void move_node_page(struct page *, int);
Jaegeuk Kim26de9b12016-05-20 20:42:37 -07001980int fsync_node_pages(struct f2fs_sb_info *, struct inode *,
1981 struct writeback_control *, bool);
Jaegeuk Kim52681372016-04-13 16:24:44 -07001982int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *);
Jaegeuk Kimad4edb82016-06-16 16:41:49 -07001983void build_free_nids(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001984bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1985void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1986void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu31696582015-07-28 18:33:46 +08001987int try_to_free_nids(struct f2fs_sb_info *, int);
Chao Yu70cfed82014-08-02 15:26:04 +08001988void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001989void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001990int recover_inode_page(struct f2fs_sb_info *, struct page *);
1991int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1992 struct f2fs_summary_block *);
1993void flush_nat_entries(struct f2fs_sb_info *);
1994int build_node_manager(struct f2fs_sb_info *);
1995void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001996int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001997void destroy_node_manager_caches(void);
1998
1999/*
2000 * segment.c
2001 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07002002void register_inmem_page(struct inode *, struct page *);
Chao Yu29b96b52016-02-06 14:38:29 +08002003void drop_inmem_pages(struct inode *);
2004int commit_inmem_pages(struct inode *);
Jaegeuk Kim2c4db1a2016-01-07 14:15:04 -08002005void f2fs_balance_fs(struct f2fs_sb_info *, bool);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09002006void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09002007int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08002008int create_flush_cmd_control(struct f2fs_sb_info *);
2009void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002010void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim6e2c64a2015-10-07 12:28:41 -07002011bool is_checkpointed_data(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09002012void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim836b5a62015-04-30 22:50:06 -07002013void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002014void release_discard_addrs(struct f2fs_sb_info *);
Chao Yue90c2d22015-07-28 18:36:47 +08002015bool discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08002016int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002017void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002018int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002019struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Chao Yu381722d2015-05-19 17:40:04 +08002020void update_meta_page(struct f2fs_sb_info *, void *, block_t);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09002021void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002022void write_node_page(unsigned int, struct f2fs_io_info *);
2023void write_data_page(struct dnode_of_data *, struct f2fs_io_info *);
2024void rewrite_data_page(struct f2fs_io_info *);
Chao Yu4356e482016-02-23 17:52:43 +08002025void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *,
2026 block_t, block_t, bool, bool);
Chao Yu528e3452015-05-28 19:15:35 +08002027void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *,
Chao Yu28bc1062016-02-06 14:40:34 +08002028 block_t, block_t, unsigned char, bool, bool);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09002029void allocate_data_block(struct f2fs_sb_info *, struct page *,
2030 block_t, block_t *, struct f2fs_summary *, int);
Jaegeuk Kimfec1d652016-01-20 23:43:51 +08002031void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
Chao Yu08b39fb2015-10-08 13:27:34 +08002032void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002033void write_data_summaries(struct f2fs_sb_info *, block_t);
2034void write_node_summaries(struct f2fs_sb_info *, block_t);
Chao Yudfc08a12016-02-14 18:50:40 +08002035int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07002036void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002037int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002038void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09002039int __init create_segment_manager_caches(void);
2040void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002041
2042/*
2043 * checkpoint.c
2044 */
Jaegeuk Kim38f91ca2016-05-18 14:07:56 -07002045void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002046struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
2047struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Chao Yu2b947002015-10-12 17:04:21 +08002048struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t);
Chao Yuf0c9cad2015-04-18 18:05:36 +08002049bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int);
Chao Yu26879fb2015-10-12 17:05:59 +08002050int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool);
Chao Yu635aee12014-12-08 15:02:52 +08002051void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002052long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Chao Yua49324f2015-12-15 13:29:47 +08002053void add_ino_entry(struct f2fs_sb_info *, nid_t, int type);
2054void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim74ef9242016-05-02 22:09:56 -07002055void release_ino_entry(struct f2fs_sb_info *, bool);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07002056bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kim0f18b462016-05-20 11:10:10 -07002057int f2fs_sync_inode_meta(struct f2fs_sb_info *);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09002058int acquire_orphan_inode(struct f2fs_sb_info *);
2059void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim67c37582016-06-13 18:27:02 -07002060void add_orphan_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002061void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8c14bfa2015-08-07 17:58:43 +08002062int recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002063int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07002064void update_dirty_page(struct inode *, struct page *);
Chao Yuc227f912015-12-16 13:09:20 +08002065void remove_dirty_inode(struct inode *);
Chao Yu6d5a1492015-12-24 18:04:56 +08002066int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type);
Chao Yuc34f42e2015-12-23 17:50:30 +08002067int write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07002068void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09002069int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002070void destroy_checkpoint_caches(void);
2071
2072/*
2073 * data.c
2074 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09002075void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Chao Yu0c3a5792016-01-18 18:28:11 +08002076void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *,
2077 struct page *, nid_t, enum page_type, int);
Chao Yu406657d2016-02-24 17:17:55 +08002078void f2fs_flush_merged_bios(struct f2fs_sb_info *);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002079int f2fs_submit_page_bio(struct f2fs_io_info *);
2080void f2fs_submit_page_mbio(struct f2fs_io_info *);
Chao Yu216a6202015-03-19 19:23:32 +08002081void set_data_blkaddr(struct dnode_of_data *);
Chao Yuf28b3432016-02-24 17:16:47 +08002082void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t);
Chao Yu46008c62016-05-09 19:56:30 +08002083int reserve_new_blocks(struct dnode_of_data *, blkcnt_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002084int reserve_new_block(struct dnode_of_data *);
Fan Li759af1c2015-08-05 15:52:16 +08002085int f2fs_get_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kimb439b102016-02-03 13:09:09 -08002086ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *);
Huajun Lib6009652013-11-10 23:13:18 +08002087int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07002088struct page *get_read_data_page(struct inode *, pgoff_t, int, bool);
Jaegeuk Kim43f3eae2015-04-30 17:00:33 -07002089struct page *find_data_page(struct inode *, pgoff_t);
Jaegeuk Kima56c7c62015-10-09 15:11:38 -07002090struct page *get_lock_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09002091struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim05ca3632015-04-23 14:38:15 -07002092int do_write_data_page(struct f2fs_io_info *);
Chao Yud323d002015-10-27 09:53:45 +08002093int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09002094int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Jaegeuk Kimfe76b792016-06-30 18:40:10 -07002095void f2fs_set_page_dirty_nobuffers(struct page *);
Chao Yu487261f2015-02-05 17:44:29 +08002096void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
2097int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002098
2099/*
2100 * gc.c
2101 */
2102int start_gc_thread(struct f2fs_sb_info *);
2103void stop_gc_thread(struct f2fs_sb_info *);
Chao Yu81ca7352016-01-26 15:39:35 +08002104block_t start_bidx_of_node(unsigned int, struct inode *);
Chao Yud530d4d2015-10-05 22:22:44 +08002105int f2fs_gc(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002106void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002107
2108/*
2109 * recovery.c
2110 */
Jaegeuk Kim6781eab2016-03-23 16:12:58 -07002111int recover_fsync_data(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002112bool space_for_roll_forward(struct f2fs_sb_info *);
2113
2114/*
2115 * debug.c
2116 */
2117#ifdef CONFIG_F2FS_STAT_FS
2118struct f2fs_stat_info {
2119 struct list_head stat_list;
2120 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002121 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
2122 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu5b7ee372015-09-30 17:38:48 +08002123 unsigned long long hit_largest, hit_cached, hit_rbtree;
2124 unsigned long long hit_total, total_ext;
Jaegeuk Kimc00ba552015-12-31 15:24:14 -08002125 int ext_tree, zombie_tree, ext_node;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002126 s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages;
Jaegeuk Kim0f18b462016-05-20 11:10:10 -07002127 unsigned int ndirty_dirs, ndirty_files, ndirty_all;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08002128 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002129 int total_count, utilization;
Jaegeuk Kim523be8a2016-05-13 12:36:58 -07002130 int bg_gc, wb_bios;
Jaegeuk Kim652be552016-05-10 19:13:50 -07002131 int inline_xattr, inline_inode, inline_dir, orphans;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002132 unsigned int valid_count, valid_node_count, valid_inode_count;
2133 unsigned int bimodal, avg_vblocks;
2134 int util_free, util_valid, util_invalid;
2135 int rsvd_segs, overp_segs;
2136 int dirty_count, node_pages, meta_pages;
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002137 int prefree_count, call_count, cp_count, bg_cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002138 int tot_segs, node_segs, data_segs, free_segs, free_secs;
Changman Leee1235982014-12-23 08:37:39 +09002139 int bg_node_segs, bg_data_segs;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002140 int tot_blks, data_blks, node_blks;
Changman Leee1235982014-12-23 08:37:39 +09002141 int bg_data_blks, bg_node_blks;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002142 int curseg[NR_CURSEG_TYPE];
2143 int cursec[NR_CURSEG_TYPE];
2144 int curzone[NR_CURSEG_TYPE];
2145
2146 unsigned int segment_count[2];
2147 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09002148 unsigned int inplace_count;
Chao Yu9edcdab2015-09-11 14:43:52 +08002149 unsigned long long base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002150};
2151
Gu Zheng963d4f72013-07-12 14:47:11 +08002152static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
2153{
Chris Fries6c311ec2014-01-17 14:44:39 -06002154 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08002155}
2156
Changman Lee942e0be2014-02-13 15:12:29 +09002157#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002158#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002159#define stat_inc_call_count(si) ((si)->call_count++)
2160#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
Chao Yu33fbd512015-12-17 17:14:44 +08002161#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
2162#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
Chao Yu5b7ee372015-09-30 17:38:48 +08002163#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
2164#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
2165#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
2166#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
Chao Yud5e8f6c2015-07-15 17:28:53 +08002167#define stat_inc_inline_xattr(inode) \
2168 do { \
2169 if (f2fs_has_inline_xattr(inode)) \
2170 (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
2171 } while (0)
2172#define stat_dec_inline_xattr(inode) \
2173 do { \
2174 if (f2fs_has_inline_xattr(inode)) \
2175 (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
2176 } while (0)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002177#define stat_inc_inline_inode(inode) \
2178 do { \
2179 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002180 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002181 } while (0)
2182#define stat_dec_inline_inode(inode) \
2183 do { \
2184 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002185 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002186 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002187#define stat_inc_inline_dir(inode) \
2188 do { \
2189 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002190 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002191 } while (0)
2192#define stat_dec_inline_dir(inode) \
2193 do { \
2194 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08002195 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002196 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002197#define stat_inc_seg_type(sbi, curseg) \
2198 ((sbi)->segment_count[(curseg)->alloc_type]++)
2199#define stat_inc_block_count(sbi, curseg) \
2200 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09002201#define stat_inc_inplace_blocks(sbi) \
2202 (atomic_inc(&(sbi)->inplace_count))
Changman Leee1235982014-12-23 08:37:39 +09002203#define stat_inc_seg_count(sbi, type, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002204 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002205 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002206 (si)->tot_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002207 if (type == SUM_TYPE_DATA) { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002208 si->data_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002209 si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
2210 } else { \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002211 si->node_segs++; \
Changman Leee1235982014-12-23 08:37:39 +09002212 si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
2213 } \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002214 } while (0)
2215
2216#define stat_inc_tot_blk_count(si, blks) \
2217 (si->tot_blks += (blks))
2218
Changman Leee1235982014-12-23 08:37:39 +09002219#define stat_inc_data_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002220 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002221 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002222 stat_inc_tot_blk_count(si, blks); \
2223 si->data_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002224 si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002225 } while (0)
2226
Changman Leee1235982014-12-23 08:37:39 +09002227#define stat_inc_node_blk_count(sbi, blks, gc_type) \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002228 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08002229 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002230 stat_inc_tot_blk_count(si, blks); \
2231 si->node_blks += (blks); \
Changman Leee1235982014-12-23 08:37:39 +09002232 si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002233 } while (0)
2234
2235int f2fs_build_stats(struct f2fs_sb_info *);
2236void f2fs_destroy_stats(struct f2fs_sb_info *);
Chao Yu787c7b8c2015-10-29 09:13:04 +08002237int __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09002238void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002239#else
Changman Lee942e0be2014-02-13 15:12:29 +09002240#define stat_inc_cp_count(si)
Jaegeuk Kim42190d22016-01-09 13:45:17 -08002241#define stat_inc_bg_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002242#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002243#define stat_inc_bggc_count(si)
Chao Yu33fbd512015-12-17 17:14:44 +08002244#define stat_inc_dirty_inode(sbi, type)
2245#define stat_dec_dirty_inode(sbi, type)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002246#define stat_inc_total_hit(sb)
Chao Yu029e13c2015-08-19 19:13:25 +08002247#define stat_inc_rbtree_node_hit(sb)
Chao Yu91c481f2015-08-19 19:12:20 +08002248#define stat_inc_largest_node_hit(sbi)
2249#define stat_inc_cached_node_hit(sbi)
Chao Yud5e8f6c2015-07-15 17:28:53 +08002250#define stat_inc_inline_xattr(inode)
2251#define stat_dec_inline_xattr(inode)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09002252#define stat_inc_inline_inode(inode)
2253#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07002254#define stat_inc_inline_dir(inode)
2255#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09002256#define stat_inc_seg_type(sbi, curseg)
2257#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09002258#define stat_inc_inplace_blocks(sbi)
Changman Leee1235982014-12-23 08:37:39 +09002259#define stat_inc_seg_count(sbi, type, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002260#define stat_inc_tot_blk_count(si, blks)
Changman Leee1235982014-12-23 08:37:39 +09002261#define stat_inc_data_blk_count(sbi, blks, gc_type)
2262#define stat_inc_node_blk_count(sbi, blks, gc_type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002263
2264static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
2265static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Chao Yu787c7b8c2015-10-29 09:13:04 +08002266static inline int __init f2fs_create_root_stats(void) { return 0; }
Namjae Jeon4589d252013-01-15 19:58:47 +09002267static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002268#endif
2269
2270extern const struct file_operations f2fs_dir_operations;
2271extern const struct file_operations f2fs_file_operations;
2272extern const struct inode_operations f2fs_file_inode_operations;
2273extern const struct address_space_operations f2fs_dblock_aops;
2274extern const struct address_space_operations f2fs_node_aops;
2275extern const struct address_space_operations f2fs_meta_aops;
2276extern const struct inode_operations f2fs_dir_inode_operations;
2277extern const struct inode_operations f2fs_symlink_inode_operations;
Jaegeuk Kimcbaf0422015-04-29 15:10:53 -07002278extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002279extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08002280extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08002281
Huajun Lie18c65b2013-11-10 23:13:19 +08002282/*
2283 * inline.c
2284 */
Jaegeuk Kim01b960e2015-04-23 10:27:21 -07002285bool f2fs_may_inline_data(struct inode *);
2286bool f2fs_may_inline_dentry(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002287void read_inline_data(struct page *, struct page *);
Chao Yu0bfcfcc2015-03-10 13:16:25 +08002288bool truncate_inline_inode(struct page *, u64);
Huajun Lie18c65b2013-11-10 23:13:19 +08002289int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07002290int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
2291int f2fs_convert_inline_inode(struct inode *);
2292int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07002293bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim6e22c692015-04-27 17:12:39 -07002294struct f2fs_dir_entry *find_in_inline_dir(struct inode *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002295 struct fscrypt_name *, struct page **);
Chao Yu201a05b2014-09-24 18:17:53 +08002296int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
Jaegeuk Kim510022a2015-03-30 15:07:16 -07002297int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *,
2298 nid_t, umode_t);
Chao Yu201a05b2014-09-24 18:17:53 +08002299void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
2300 struct inode *, struct inode *);
2301bool f2fs_empty_inline_dir(struct inode *);
Jaegeuk Kimd8c68222015-04-27 16:26:24 -07002302int f2fs_read_inline_dir(struct file *, struct dir_context *,
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002303 struct fscrypt_str *);
Jaegeuk Kim67f8cf32015-10-15 11:34:49 -07002304int f2fs_inline_data_fiemap(struct inode *,
2305 struct fiemap_extent_info *, __u64, __u64);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002306
2307/*
Jaegeuk Kim2658e502015-06-19 12:01:21 -07002308 * shrinker.c
2309 */
2310unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *);
2311unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *);
2312void f2fs_join_shrinker(struct f2fs_sb_info *);
2313void f2fs_leave_shrinker(struct f2fs_sb_info *);
2314
2315/*
Chao Yua28ef1f2015-07-08 17:59:36 +08002316 * extent_cache.c
2317 */
2318unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
Jaegeuk Kimed3d1252015-12-28 11:39:06 -08002319bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *);
Jaegeuk Kim5f281fa2016-07-12 11:07:52 -07002320void f2fs_drop_extent_tree(struct inode *);
Chao Yua28ef1f2015-07-08 17:59:36 +08002321unsigned int f2fs_destroy_extent_node(struct inode *);
2322void f2fs_destroy_extent_tree(struct inode *);
2323bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *);
2324void f2fs_update_extent_cache(struct dnode_of_data *);
Chao Yu19b2c302015-08-26 20:34:48 +08002325void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
2326 pgoff_t, block_t, unsigned int);
Chao Yua28ef1f2015-07-08 17:59:36 +08002327void init_extent_cache_info(struct f2fs_sb_info *);
2328int __init create_extent_cache(void);
2329void destroy_extent_cache(void);
2330
2331/*
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002332 * crypto support
2333 */
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002334static inline bool f2fs_encrypted_inode(struct inode *inode)
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002335{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002336 return file_is_encrypt(inode);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002337}
2338
2339static inline void f2fs_set_encrypted_inode(struct inode *inode)
2340{
2341#ifdef CONFIG_F2FS_FS_ENCRYPTION
2342 file_set_encrypt(inode);
2343#endif
2344}
2345
2346static inline bool f2fs_bio_encrypted(struct bio *bio)
2347{
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002348 return bio->bi_private != NULL;
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002349}
2350
2351static inline int f2fs_sb_has_crypto(struct super_block *sb)
2352{
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002353 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
Jaegeuk Kimcde4de12015-04-20 13:57:51 -07002354}
Jaegeuk Kimf424f662015-04-20 15:19:06 -07002355
Jaegeuk Kim52763a42016-06-13 09:47:48 -07002356static inline int f2fs_sb_mounted_hmsmr(struct super_block *sb)
2357{
2358 return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_HMSMR);
2359}
2360
2361static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
2362{
2363 clear_opt(sbi, ADAPTIVE);
2364 clear_opt(sbi, LFS);
2365
2366 switch (mt) {
2367 case F2FS_MOUNT_ADAPTIVE:
2368 set_opt(sbi, ADAPTIVE);
2369 break;
2370 case F2FS_MOUNT_LFS:
2371 set_opt(sbi, LFS);
2372 break;
2373 }
2374}
2375
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002376static inline bool f2fs_may_encrypt(struct inode *inode)
2377{
2378#ifdef CONFIG_F2FS_FS_ENCRYPTION
Al Viro886f56f2015-12-05 03:56:06 -05002379 umode_t mode = inode->i_mode;
Jaegeuk Kimfcc85a42015-04-21 20:39:58 -07002380
2381 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
2382#else
2383 return 0;
2384#endif
2385}
2386
Jaegeuk Kim0b81d072015-05-15 16:26:10 -07002387#ifndef CONFIG_F2FS_FS_ENCRYPTION
2388#define fscrypt_set_d_op(i)
2389#define fscrypt_get_ctx fscrypt_notsupp_get_ctx
2390#define fscrypt_release_ctx fscrypt_notsupp_release_ctx
2391#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page
2392#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page
2393#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages
2394#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page
2395#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page
2396#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range
2397#define fscrypt_process_policy fscrypt_notsupp_process_policy
2398#define fscrypt_get_policy fscrypt_notsupp_get_policy
2399#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context
2400#define fscrypt_inherit_context fscrypt_notsupp_inherit_context
2401#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info
2402#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info
2403#define fscrypt_setup_filename fscrypt_notsupp_setup_filename
2404#define fscrypt_free_filename fscrypt_notsupp_free_filename
2405#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size
2406#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer
2407#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer
2408#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr
2409#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk
Jaegeuk Kim57e50552015-04-20 19:52:47 -07002410#endif
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09002411#endif