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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 Kim39a53e02012-11-28 13:37:31 +090022
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090023#ifdef CONFIG_F2FS_CHECK_FS
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070024#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090025#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090026#else
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070027#define f2fs_bug_on(sbi, condition) \
28 do { \
29 if (unlikely(condition)) { \
30 WARN_ON(1); \
Chao Yucaf00472015-01-28 17:48:42 +080031 set_sbi_flag(sbi, SBI_NEED_FSCK); \
Jaegeuk Kim9850cf42014-09-02 15:52:58 -070032 } \
33 } while (0)
Jaegeuk Kim0daaad92013-11-24 13:50:35 +090034#define f2fs_down_write(x, y) down_write(x)
Jaegeuk Kim5d56b672013-10-29 15:14:54 +090035#endif
36
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090037/*
38 * For mount options
39 */
40#define F2FS_MOUNT_BG_GC 0x00000001
41#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
42#define F2FS_MOUNT_DISCARD 0x00000004
43#define F2FS_MOUNT_NOHEAP 0x00000008
44#define F2FS_MOUNT_XATTR_USER 0x00000010
45#define F2FS_MOUNT_POSIX_ACL 0x00000020
46#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
Jaegeuk Kim444c5802013-08-08 15:16:22 +090047#define F2FS_MOUNT_INLINE_XATTR 0x00000080
Huajun Li1001b342013-11-10 23:13:16 +080048#define F2FS_MOUNT_INLINE_DATA 0x00000100
Chao Yu34d67de2014-09-24 18:15:19 +080049#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
50#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
51#define F2FS_MOUNT_NOBARRIER 0x00000800
Jaegeuk Kimd5053a342014-10-30 22:47:03 -070052#define F2FS_MOUNT_FASTBOOT 0x00001000
Chao Yu89672152015-02-05 17:55:51 +080053#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090054
55#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
56#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
57#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
58
59#define ver_after(a, b) (typecheck(unsigned long long, a) && \
60 typecheck(unsigned long long, b) && \
61 ((long long)((a) - (b)) > 0))
62
Jaegeuk Kima9841c42013-05-24 12:41:04 +090063typedef u32 block_t; /*
64 * should not change u32, since it is the on-disk block
65 * address format, __le32.
66 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090067typedef u32 nid_t;
68
69struct f2fs_mount_info {
70 unsigned int opt;
71};
72
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090073#define CRCPOLY_LE 0xedb88320
74
75static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090076{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090077 unsigned char *p = (unsigned char *)buf;
78 __u32 crc = F2FS_SUPER_MAGIC;
79 int i;
80
81 while (len--) {
82 crc ^= *p++;
83 for (i = 0; i < 8; i++)
84 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
85 }
86 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090087}
88
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090089static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090090{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090091 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090092}
93
94/*
95 * For checkpoint manager
96 */
97enum {
98 NAT_BITMAP,
99 SIT_BITMAP
100};
101
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700102enum {
103 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800104 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700105 CP_SYNC,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700106 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700107};
108
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800109#define DEF_BATCHED_TRIM_SECTIONS 32
110#define BATCHED_TRIM_SEGMENTS(sbi) \
111 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
112
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700113struct cp_control {
114 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700115 __u64 trim_start;
116 __u64 trim_end;
117 __u64 trim_minlen;
118 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700119};
120
Chao Yu662befd2014-02-07 16:11:53 +0800121/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800122 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800123 */
124enum {
125 META_CP,
126 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800127 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700128 META_SSA,
129 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800130};
131
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700132/* for the list of ino */
133enum {
134 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700135 APPEND_INO, /* for append ino list */
136 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700137 MAX_INO_ENTRY, /* max. list */
138};
139
140struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900141 struct list_head list; /* list head */
142 nid_t ino; /* inode number */
143};
144
Chao Yu06292072014-12-29 15:56:18 +0800145/*
146 * for the list of directory inodes or gc inodes.
147 * NOTE: there are two slab users for this structure, if we add/modify/delete
148 * fields in structure for one of slab users, it may affect fields or size of
149 * other one, in this condition, it's better to split both of slab and related
150 * data structure.
151 */
152struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900153 struct list_head list; /* list head */
154 struct inode *inode; /* vfs inode pointer */
155};
156
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900157/* for the list of blockaddresses to be discarded */
158struct discard_entry {
159 struct list_head list; /* list head */
160 block_t blkaddr; /* block address to be discarded */
161 int len; /* # of consecutive blocks of the discard */
162};
163
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900164/* for the list of fsync inodes, used only during recovery */
165struct fsync_inode_entry {
166 struct list_head list; /* list head */
167 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700168 block_t blkaddr; /* block address locating the last fsync */
169 block_t last_dentry; /* block address locating the last dentry */
170 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900171};
172
173#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
174#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
175
176#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
177#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
178#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
179#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
180
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700181#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
182#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
183
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900184static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
185{
186 int before = nats_in_cursum(rs);
187 rs->n_nats = cpu_to_le16(before + i);
188 return before;
189}
190
191static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
192{
193 int before = sits_in_cursum(rs);
194 rs->n_sits = cpu_to_le16(before + i);
195 return before;
196}
197
Chao Yu184a5cd2014-09-04 18:13:01 +0800198static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
199 int type)
200{
201 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700202 return size <= MAX_NAT_JENTRIES(sum);
203 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800204}
205
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900206/*
Namjae Jeone9750822013-02-04 23:41:41 +0900207 * ioctl commands
208 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700209#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
210#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800211#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700212
213#define F2FS_IOCTL_MAGIC 0xf5
214#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
215#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700216#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800217#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
218#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Namjae Jeone9750822013-02-04 23:41:41 +0900219
220#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
221/*
222 * ioctl commands in 32 bit emulation
223 */
224#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
225#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
226#endif
227
228/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900229 * For INODE and NODE manager
230 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700231/* for directory operations */
232struct f2fs_dentry_ptr {
233 const void *bitmap;
234 struct f2fs_dir_entry *dentry;
235 __u8 (*filename)[F2FS_SLOT_LEN];
236 int max;
237};
238
239static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d,
240 void *src, int type)
241{
242 if (type == 1) {
243 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
244 d->max = NR_DENTRY_IN_BLOCK;
245 d->bitmap = &t->dentry_bitmap;
246 d->dentry = t->dentry;
247 d->filename = t->filename;
248 } else {
249 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
250 d->max = NR_INLINE_DENTRY;
251 d->bitmap = &t->dentry_bitmap;
252 d->dentry = t->dentry;
253 d->filename = t->filename;
254 }
255}
256
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900257/*
258 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
259 * as its node offset to distinguish from index node blocks.
260 * But some bits are used to mark the node block.
261 */
262#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
263 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900264enum {
265 ALLOC_NODE, /* allocate a new node page if needed */
266 LOOKUP_NODE, /* look up a node without readahead */
267 LOOKUP_NODE_RA, /*
268 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800269 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900270 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900271};
272
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900273#define F2FS_LINK_MAX 32000 /* maximum link count per file */
274
Chao Yu817202d92014-04-28 17:59:43 +0800275#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
276
Chao Yu13054c52015-02-05 17:52:58 +0800277/* vector size for gang look-up from extent cache that consists of radix tree */
278#define EXT_TREE_VEC_SIZE 64
279
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900280/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800281#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
282
283/* number of extent info in extent cache we try to shrink */
284#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900285
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900286struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800287 unsigned int fofs; /* start offset in a file */
288 u32 blk; /* start block address of the extent */
289 unsigned int len; /* length of the extent */
290};
291
292struct extent_node {
293 struct rb_node rb_node; /* rb node located in rb-tree */
294 struct list_head list; /* node in global extent list of sbi */
295 struct extent_info ei; /* extent info */
296};
297
298struct extent_tree {
299 nid_t ino; /* inode number */
300 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800301 struct extent_node *cached_en; /* recently accessed extent node */
Chao Yu13054c52015-02-05 17:52:58 +0800302 rwlock_t lock; /* protect extent info rb-tree */
303 atomic_t refcount; /* reference count of rb-tree */
304 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900305};
306
307/*
308 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
309 */
310#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900311#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900312
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900313#define DEF_DIR_LEVEL 0
314
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900315struct f2fs_inode_info {
316 struct inode vfs_inode; /* serve a vfs inode */
317 unsigned long i_flags; /* keep an inode flags for ioctl */
318 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900319 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900320 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900321 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900322 umode_t i_acl_mode; /* keep file acl mode temporarily */
323
324 /* Use below internally in f2fs*/
325 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900326 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700327 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900328 f2fs_hash_t chash; /* hash value of given file name */
329 unsigned int clevel; /* maximum level of given file name */
330 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900331 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900332 struct extent_info ext; /* in-memory extent cache entry */
Chao Yu0c872e22015-02-05 17:46:29 +0800333 rwlock_t ext_lock; /* rwlock for single extent cache */
Chao Yu06292072014-12-29 15:56:18 +0800334 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700335
Jaegeuk Kim34ba94b2014-10-09 13:19:53 -0700336 struct radix_tree_root inmem_root; /* radix tree for inmem pages */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700337 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
338 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900339};
340
341static inline void get_extent_info(struct extent_info *ext,
342 struct f2fs_extent i_ext)
343{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900344 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800345 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900346 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900347}
348
349static inline void set_raw_extent(struct extent_info *ext,
350 struct f2fs_extent *i_ext)
351{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900352 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800353 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900354 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900355}
356
Chao Yu429511c2015-02-05 17:54:31 +0800357static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
358 u32 blk, unsigned int len)
359{
360 ei->fofs = fofs;
361 ei->blk = blk;
362 ei->len = len;
363}
364
365static inline bool __is_extent_mergeable(struct extent_info *back,
366 struct extent_info *front)
367{
368 return (back->fofs + back->len == front->fofs &&
369 back->blk + back->len == front->blk);
370}
371
372static inline bool __is_back_mergeable(struct extent_info *cur,
373 struct extent_info *back)
374{
375 return __is_extent_mergeable(back, cur);
376}
377
378static inline bool __is_front_mergeable(struct extent_info *cur,
379 struct extent_info *front)
380{
381 return __is_extent_mergeable(cur, front);
382}
383
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900384struct f2fs_nm_info {
385 block_t nat_blkaddr; /* base disk address of NAT */
386 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900387 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900388 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900389 unsigned int ram_thresh; /* control the memory footprint */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900390
391 /* NAT cache management */
392 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700393 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800394 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900395 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700396 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800397 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900398
399 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900400 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900401 struct list_head free_nid_list; /* a list for free nids */
402 spinlock_t free_nid_list_lock; /* protect free nid list */
403 unsigned int fcnt; /* the number of free node id */
404 struct mutex build_lock; /* lock for build free nids */
405
406 /* for checkpoint */
407 char *nat_bitmap; /* NAT bitmap pointer */
408 int bitmap_size; /* bitmap size */
409};
410
411/*
412 * this structure is used as one of function parameters.
413 * all the information are dedicated to a given direct node block determined
414 * by the data offset in a file.
415 */
416struct dnode_of_data {
417 struct inode *inode; /* vfs inode pointer */
418 struct page *inode_page; /* its inode page, NULL is possible */
419 struct page *node_page; /* cached direct node page */
420 nid_t nid; /* node id of the direct node block */
421 unsigned int ofs_in_node; /* data offset in the node page */
422 bool inode_page_locked; /* inode page is locked or not */
423 block_t data_blkaddr; /* block address of the node block */
424};
425
426static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
427 struct page *ipage, struct page *npage, nid_t nid)
428{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900429 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900430 dn->inode = inode;
431 dn->inode_page = ipage;
432 dn->node_page = npage;
433 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900434}
435
436/*
437 * For SIT manager
438 *
439 * By default, there are 6 active log areas across the whole main area.
440 * When considering hot and cold data separation to reduce cleaning overhead,
441 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
442 * respectively.
443 * In the current design, you should not change the numbers intentionally.
444 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
445 * logs individually according to the underlying devices. (default: 6)
446 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
447 * data and 8 for node logs.
448 */
449#define NR_CURSEG_DATA_TYPE (3)
450#define NR_CURSEG_NODE_TYPE (3)
451#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
452
453enum {
454 CURSEG_HOT_DATA = 0, /* directory entry blocks */
455 CURSEG_WARM_DATA, /* data blocks */
456 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
457 CURSEG_HOT_NODE, /* direct node blocks of directory files */
458 CURSEG_WARM_NODE, /* direct node blocks of normal files */
459 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800460 NO_CHECK_TYPE,
461 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900462};
463
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900464struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900465 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800466 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900467 int ret;
468};
469
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800470struct flush_cmd_control {
471 struct task_struct *f2fs_issue_flush; /* flush thread */
472 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800473 struct llist_head issue_list; /* list for command issue */
474 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800475};
476
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900477struct f2fs_sm_info {
478 struct sit_info *sit_info; /* whole segment information */
479 struct free_segmap_info *free_info; /* free segment information */
480 struct dirty_seglist_info *dirty_info; /* dirty segment information */
481 struct curseg_info *curseg_array; /* active segment information */
482
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900483 block_t seg0_blkaddr; /* block address of 0'th segment */
484 block_t main_blkaddr; /* start block address of main area */
485 block_t ssa_blkaddr; /* start block address of SSA area */
486
487 unsigned int segment_count; /* total # of segments */
488 unsigned int main_segments; /* # of segments in main area */
489 unsigned int reserved_segments; /* # of reserved segments */
490 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900491
492 /* a threshold to reclaim prefree segments */
493 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900494
495 /* for small discard management */
496 struct list_head discard_list; /* 4KB discard list */
497 int nr_discards; /* # of discards in the list */
498 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900499
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800500 /* for batched trimming */
501 unsigned int trim_sections; /* # of sections to trim */
502
Chao Yu184a5cd2014-09-04 18:13:01 +0800503 struct list_head sit_entry_set; /* sit entry set list */
504
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900505 unsigned int ipu_policy; /* in-place-update policy */
506 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700507 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900508
509 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800510 struct flush_cmd_control *cmd_control_info;
511
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900512};
513
514/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900515 * For superblock
516 */
517/*
518 * COUNT_TYPE for monitoring
519 *
520 * f2fs monitors the number of several block types such as on-writeback,
521 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
522 */
523enum count_type {
524 F2FS_WRITEBACK,
525 F2FS_DIRTY_DENTS,
526 F2FS_DIRTY_NODES,
527 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800528 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900529 NR_COUNT_TYPE,
530};
531
532/*
arter97e1c42042014-08-06 23:22:50 +0900533 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900534 * The available types are:
535 * DATA User data pages. It operates as async mode.
536 * NODE Node pages. It operates as async mode.
537 * META FS metadata pages such as SIT, NAT, CP.
538 * NR_PAGE_TYPE The number of page types.
539 * META_FLUSH Make sure the previous pages are written
540 * with waiting the bio's completion
541 * ... Only can be used with META.
542 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900543#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900544enum page_type {
545 DATA,
546 NODE,
547 META,
548 NR_PAGE_TYPE,
549 META_FLUSH,
550};
551
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900552struct f2fs_io_info {
Gu Zheng7e8f2302013-12-20 18:17:49 +0800553 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
554 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800555 block_t blk_addr; /* block address to be written */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900556};
557
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900558#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900559struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900560 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900561 struct bio *bio; /* bios to merge */
562 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900563 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800564 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900565};
566
Chao Yu67298802014-11-18 11:18:36 +0800567/* for inner inode cache management */
568struct inode_management {
569 struct radix_tree_root ino_root; /* ino entry array */
570 spinlock_t ino_lock; /* for ino entry lock */
571 struct list_head ino_list; /* inode list head */
572 unsigned long ino_num; /* number of entries */
573};
574
Chao Yucaf00472015-01-28 17:48:42 +0800575/* For s_flag in struct f2fs_sb_info */
576enum {
577 SBI_IS_DIRTY, /* dirty flag for checkpoint */
578 SBI_IS_CLOSE, /* specify unmounting */
579 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
580 SBI_POR_DOING, /* recovery is doing or not */
581};
582
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900583struct f2fs_sb_info {
584 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900585 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900586 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
587 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800588 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900589
590 /* for node-related operations */
591 struct f2fs_nm_info *nm_info; /* node manager */
592 struct inode *node_inode; /* cache node blocks */
593
594 /* for segment-related operations */
595 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900596
597 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800598 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900599 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900600
601 /* for checkpoint */
602 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
603 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900604 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800605 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800606 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900607 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900608 wait_queue_head_t cp_wait;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900609
Chao Yu67298802014-11-18 11:18:36 +0800610 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700611
612 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800613 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900614
615 /* for directory inode management */
616 struct list_head dir_inode_list; /* dir inode list */
617 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900618
Chao Yu13054c52015-02-05 17:52:58 +0800619 /* for extent tree cache */
620 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
621 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
622 struct list_head extent_list; /* lru list for shrinker */
623 spinlock_t extent_lock; /* locking extent lru list */
624 int total_ext_tree; /* extent tree count */
625 atomic_t total_ext_node; /* extent info count */
626
arter97e1c42042014-08-06 23:22:50 +0900627 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900628 unsigned int log_sectors_per_block; /* log2 sectors per block */
629 unsigned int log_blocksize; /* log2 block size */
630 unsigned int blocksize; /* block size */
631 unsigned int root_ino_num; /* root inode number*/
632 unsigned int node_ino_num; /* node inode number*/
633 unsigned int meta_ino_num; /* meta inode number*/
634 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
635 unsigned int blocks_per_seg; /* blocks per segment */
636 unsigned int segs_per_sec; /* segments per section */
637 unsigned int secs_per_zone; /* sections per zone */
638 unsigned int total_sections; /* total section count */
639 unsigned int total_node_count; /* total node block count */
640 unsigned int total_valid_node_count; /* valid node block count */
641 unsigned int total_valid_inode_count; /* valid inode count */
642 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900643 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900644
645 block_t user_block_count; /* # of user blocks */
646 block_t total_valid_block_count; /* # of valid blocks */
647 block_t alloc_valid_block_count; /* # of allocated blocks */
648 block_t last_valid_block_count; /* for recovery */
649 u32 s_next_generation; /* for NFS support */
650 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
651
652 struct f2fs_mount_info mount_opt; /* mount options */
653
654 /* for cleaning operations */
655 struct mutex gc_mutex; /* mutex for GC */
656 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900657 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900658
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900659 /* maximum # of trials to find a victim segment for SSR and GC */
660 unsigned int max_victim_search;
661
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900662 /*
663 * for stat information.
664 * one is for the LFS mode, and the other is for the SSR mode.
665 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900666#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900667 struct f2fs_stat_info *stat_info; /* FS status information */
668 unsigned int segment_count[2]; /* # of allocated segments */
669 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900670 atomic_t inplace_count; /* # of inplace update */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900671 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
Chao Yu03e14d52014-12-08 19:08:20 +0800672 atomic_t inline_inode; /* # of inline_data inodes */
673 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900674 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900675 unsigned int n_dirty_dirs; /* # of dir inodes */
676#endif
677 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900678 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900679
680 /* For sysfs suppport */
681 struct kobject s_kobj;
682 struct completion s_kobj_unregister;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900683};
684
685/*
686 * Inline functions
687 */
688static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
689{
690 return container_of(inode, struct f2fs_inode_info, vfs_inode);
691}
692
693static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
694{
695 return sb->s_fs_info;
696}
697
Jaegeuk Kim40813632014-09-02 15:31:18 -0700698static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
699{
700 return F2FS_SB(inode->i_sb);
701}
702
703static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
704{
705 return F2FS_I_SB(mapping->host);
706}
707
708static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
709{
710 return F2FS_M_SB(page->mapping);
711}
712
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900713static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
714{
715 return (struct f2fs_super_block *)(sbi->raw_super);
716}
717
718static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
719{
720 return (struct f2fs_checkpoint *)(sbi->ckpt);
721}
722
Gu Zheng45590712013-07-15 17:57:38 +0800723static inline struct f2fs_node *F2FS_NODE(struct page *page)
724{
725 return (struct f2fs_node *)page_address(page);
726}
727
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900728static inline struct f2fs_inode *F2FS_INODE(struct page *page)
729{
730 return &((struct f2fs_node *)page_address(page))->i;
731}
732
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900733static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
734{
735 return (struct f2fs_nm_info *)(sbi->nm_info);
736}
737
738static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
739{
740 return (struct f2fs_sm_info *)(sbi->sm_info);
741}
742
743static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
744{
745 return (struct sit_info *)(SM_I(sbi)->sit_info);
746}
747
748static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
749{
750 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
751}
752
753static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
754{
755 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
756}
757
Gu Zheng9df27d92014-01-20 18:37:04 +0800758static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
759{
760 return sbi->meta_inode->i_mapping;
761}
762
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900763static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
764{
765 return sbi->node_inode->i_mapping;
766}
767
Chao Yucaf00472015-01-28 17:48:42 +0800768static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900769{
Chao Yucaf00472015-01-28 17:48:42 +0800770 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900771}
772
Chao Yucaf00472015-01-28 17:48:42 +0800773static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900774{
Chao Yucaf00472015-01-28 17:48:42 +0800775 sbi->s_flag |= (0x01 << type);
776}
777
778static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
779{
780 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900781}
782
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900783static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
784{
785 return le64_to_cpu(cp->checkpoint_ver);
786}
787
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900788static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
789{
790 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
791 return ckpt_flags & f;
792}
793
794static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
795{
796 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
797 ckpt_flags |= f;
798 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
799}
800
801static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
802{
803 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
804 ckpt_flags &= (~f);
805 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
806}
807
Gu Zhenge4795562013-09-27 18:08:30 +0800808static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900809{
Gu Zhenge4795562013-09-27 18:08:30 +0800810 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900811}
812
Gu Zhenge4795562013-09-27 18:08:30 +0800813static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900814{
Gu Zhenge4795562013-09-27 18:08:30 +0800815 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900816}
817
Gu Zhenge4795562013-09-27 18:08:30 +0800818static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900819{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900820 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900821}
822
Gu Zhenge4795562013-09-27 18:08:30 +0800823static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900824{
Gu Zhenge4795562013-09-27 18:08:30 +0800825 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900826}
827
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800828static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
829{
830 int reason = CP_SYNC;
831
832 if (test_opt(sbi, FASTBOOT))
833 reason = CP_FASTBOOT;
834 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
835 reason = CP_UMOUNT;
836 return reason;
837}
838
839static inline bool __remain_node_summaries(int reason)
840{
841 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
842}
843
844static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
845{
846 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
847 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
848}
849
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900850/*
851 * Check whether the given nid is within node id range.
852 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900853static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900854{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800855 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
856 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800857 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +0900858 return -EINVAL;
859 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900860}
861
862#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
863
864/*
865 * Check whether the inode has blocks or not
866 */
867static inline int F2FS_HAS_BLOCKS(struct inode *inode)
868{
869 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -0600870 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900871 else
Chris Fries6c311ec2014-01-17 14:44:39 -0600872 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900873}
874
Chao Yu4bc8e9b2014-03-17 16:35:06 +0800875static inline bool f2fs_has_xattr_block(unsigned int ofs)
876{
877 return ofs == XATTR_NODE_OFFSET;
878}
879
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900880static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
881 struct inode *inode, blkcnt_t count)
882{
883 block_t valid_block_count;
884
885 spin_lock(&sbi->stat_lock);
886 valid_block_count =
887 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +0800888 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900889 spin_unlock(&sbi->stat_lock);
890 return false;
891 }
892 inode->i_blocks += count;
893 sbi->total_valid_block_count = valid_block_count;
894 sbi->alloc_valid_block_count += (block_t)count;
895 spin_unlock(&sbi->stat_lock);
896 return true;
897}
898
Gu Zhengda19b0d2013-11-19 18:03:27 +0800899static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900900 struct inode *inode,
901 blkcnt_t count)
902{
903 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700904 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
905 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900906 inode->i_blocks -= count;
907 sbi->total_valid_block_count -= (block_t)count;
908 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900909}
910
911static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
912{
913 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +0800914 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900915}
916
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700917static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900918{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700919 atomic_inc(&F2FS_I(inode)->dirty_pages);
920 if (S_ISDIR(inode->i_mode))
921 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900922}
923
924static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
925{
926 atomic_dec(&sbi->nr_pages[count_type]);
927}
928
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700929static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900930{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700931 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +0900932 return;
933
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700934 atomic_dec(&F2FS_I(inode)->dirty_pages);
935
936 if (S_ISDIR(inode->i_mode))
937 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900938}
939
940static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
941{
942 return atomic_read(&sbi->nr_pages[count_type]);
943}
944
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700945static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900946{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700947 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900948}
949
Namjae Jeon5ac206c2013-02-02 23:52:59 +0900950static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
951{
952 unsigned int pages_per_sec = sbi->segs_per_sec *
953 (1 << sbi->log_blocks_per_seg);
954 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
955 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
956}
957
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900958static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
959{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +0900960 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900961}
962
963static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
964{
965 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
966
967 /* return NAT or SIT bitmap */
968 if (flag == NAT_BITMAP)
969 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
970 else if (flag == SIT_BITMAP)
971 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
972
973 return 0;
974}
975
976static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
977{
978 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +0900979 int offset;
980
981 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
982 if (flag == NAT_BITMAP)
983 return &ckpt->sit_nat_version_bitmap;
984 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -0700985 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +0900986 } else {
987 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900988 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +0900989 return &ckpt->sit_nat_version_bitmap + offset;
990 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900991}
992
993static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
994{
995 block_t start_addr;
996 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900997 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900998
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900999 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001000
1001 /*
1002 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001003 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001004 */
1005 if (!(ckpt_version & 1))
1006 start_addr += sbi->blocks_per_seg;
1007
1008 return start_addr;
1009}
1010
1011static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1012{
1013 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1014}
1015
1016static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001017 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001018{
1019 block_t valid_block_count;
1020 unsigned int valid_node_count;
1021
1022 spin_lock(&sbi->stat_lock);
1023
Gu Zhengef86d702013-11-19 18:03:38 +08001024 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001025 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001026 spin_unlock(&sbi->stat_lock);
1027 return false;
1028 }
1029
Gu Zhengef86d702013-11-19 18:03:38 +08001030 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001031 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001032 spin_unlock(&sbi->stat_lock);
1033 return false;
1034 }
1035
1036 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001037 inode->i_blocks++;
1038
1039 sbi->alloc_valid_block_count++;
1040 sbi->total_valid_node_count++;
1041 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001042 spin_unlock(&sbi->stat_lock);
1043
1044 return true;
1045}
1046
1047static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001048 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001049{
1050 spin_lock(&sbi->stat_lock);
1051
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001052 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1053 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1054 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001055
Gu Zhengef86d702013-11-19 18:03:38 +08001056 inode->i_blocks--;
1057 sbi->total_valid_node_count--;
1058 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001059
1060 spin_unlock(&sbi->stat_lock);
1061}
1062
1063static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1064{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001065 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001066}
1067
1068static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1069{
1070 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001071 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001072 sbi->total_valid_inode_count++;
1073 spin_unlock(&sbi->stat_lock);
1074}
1075
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001076static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001077{
1078 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001079 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001080 sbi->total_valid_inode_count--;
1081 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001082}
1083
1084static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1085{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001086 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001087}
1088
1089static inline void f2fs_put_page(struct page *page, int unlock)
1090{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001091 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001092 return;
1093
1094 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001095 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001096 unlock_page(page);
1097 }
1098 page_cache_release(page);
1099}
1100
1101static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1102{
1103 if (dn->node_page)
1104 f2fs_put_page(dn->node_page, 1);
1105 if (dn->inode_page && dn->node_page != dn->inode_page)
1106 f2fs_put_page(dn->inode_page, 0);
1107 dn->node_page = NULL;
1108 dn->inode_page = NULL;
1109}
1110
1111static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001112 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001113{
Gu Zhenge8512d22014-03-07 18:43:28 +08001114 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001115}
1116
Gu Zheng7bd59382013-10-22 14:52:26 +08001117static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1118 gfp_t flags)
1119{
1120 void *entry;
1121retry:
1122 entry = kmem_cache_alloc(cachep, flags);
1123 if (!entry) {
1124 cond_resched();
1125 goto retry;
1126 }
1127
1128 return entry;
1129}
1130
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001131static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1132 unsigned long index, void *item)
1133{
1134 while (radix_tree_insert(root, index, item))
1135 cond_resched();
1136}
1137
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001138#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1139
1140static inline bool IS_INODE(struct page *page)
1141{
Gu Zheng45590712013-07-15 17:57:38 +08001142 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001143 return RAW_IS_INODE(p);
1144}
1145
1146static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1147{
1148 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1149}
1150
1151static inline block_t datablock_addr(struct page *node_page,
1152 unsigned int offset)
1153{
1154 struct f2fs_node *raw_node;
1155 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001156 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001157 addr_array = blkaddr_in_node(raw_node);
1158 return le32_to_cpu(addr_array[offset]);
1159}
1160
1161static inline int f2fs_test_bit(unsigned int nr, char *addr)
1162{
1163 int mask;
1164
1165 addr += (nr >> 3);
1166 mask = 1 << (7 - (nr & 0x07));
1167 return mask & *addr;
1168}
1169
Gu Zheng52aca072014-10-20 17:45:51 +08001170static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001171{
1172 int mask;
1173 int ret;
1174
1175 addr += (nr >> 3);
1176 mask = 1 << (7 - (nr & 0x07));
1177 ret = mask & *addr;
1178 *addr |= mask;
1179 return ret;
1180}
1181
Gu Zheng52aca072014-10-20 17:45:51 +08001182static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001183{
1184 int mask;
1185 int ret;
1186
1187 addr += (nr >> 3);
1188 mask = 1 << (7 - (nr & 0x07));
1189 ret = mask & *addr;
1190 *addr &= ~mask;
1191 return ret;
1192}
1193
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001194static inline void f2fs_change_bit(unsigned int nr, char *addr)
1195{
1196 int mask;
1197
1198 addr += (nr >> 3);
1199 mask = 1 << (7 - (nr & 0x07));
1200 *addr ^= mask;
1201}
1202
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001203/* used for f2fs_inode_info->flags */
1204enum {
1205 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001206 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001207 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001208 FI_INC_LINK, /* need to increment i_nlink */
1209 FI_ACL_MODE, /* indicate acl mode */
1210 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001211 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001212 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001213 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001214 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001215 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001216 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001217 FI_APPEND_WRITE, /* inode has appended data */
1218 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001219 FI_NEED_IPU, /* used for ipu per file */
1220 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001221 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001222 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001223 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001224};
1225
1226static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1227{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001228 if (!test_bit(flag, &fi->flags))
1229 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001230}
1231
1232static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1233{
1234 return test_bit(flag, &fi->flags);
1235}
1236
1237static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1238{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001239 if (test_bit(flag, &fi->flags))
1240 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001241}
1242
1243static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1244{
1245 fi->i_acl_mode = mode;
1246 set_inode_flag(fi, FI_ACL_MODE);
1247}
1248
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001249static inline void get_inline_info(struct f2fs_inode_info *fi,
1250 struct f2fs_inode *ri)
1251{
1252 if (ri->i_inline & F2FS_INLINE_XATTR)
1253 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001254 if (ri->i_inline & F2FS_INLINE_DATA)
1255 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001256 if (ri->i_inline & F2FS_INLINE_DENTRY)
1257 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001258 if (ri->i_inline & F2FS_DATA_EXIST)
1259 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001260}
1261
1262static inline void set_raw_inline(struct f2fs_inode_info *fi,
1263 struct f2fs_inode *ri)
1264{
1265 ri->i_inline = 0;
1266
1267 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1268 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001269 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1270 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001271 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1272 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001273 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1274 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001275}
1276
Chao Yu987c7c32014-03-12 15:59:03 +08001277static inline int f2fs_has_inline_xattr(struct inode *inode)
1278{
1279 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1280}
1281
Jaegeuk Kimde936532013-08-12 21:08:03 +09001282static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1283{
Chao Yu987c7c32014-03-12 15:59:03 +08001284 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001285 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1286 return DEF_ADDRS_PER_INODE;
1287}
1288
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001289static inline void *inline_xattr_addr(struct page *page)
1290{
Chao Yu695fd1e2014-02-27 19:52:21 +08001291 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001292 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1293 F2FS_INLINE_XATTR_ADDRS]);
1294}
1295
1296static inline int inline_xattr_size(struct inode *inode)
1297{
Chao Yu987c7c32014-03-12 15:59:03 +08001298 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001299 return F2FS_INLINE_XATTR_ADDRS << 2;
1300 else
1301 return 0;
1302}
1303
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001304static inline int f2fs_has_inline_data(struct inode *inode)
1305{
1306 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1307}
1308
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001309static inline void f2fs_clear_inline_inode(struct inode *inode)
1310{
1311 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1312 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1313}
1314
1315static inline int f2fs_exist_data(struct inode *inode)
1316{
1317 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1318}
1319
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001320static inline bool f2fs_is_atomic_file(struct inode *inode)
1321{
1322 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1323}
1324
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001325static inline bool f2fs_is_volatile_file(struct inode *inode)
1326{
1327 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1328}
1329
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001330static inline bool f2fs_is_drop_cache(struct inode *inode)
1331{
1332 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1333}
1334
Huajun Li1001b342013-11-10 23:13:16 +08001335static inline void *inline_data_addr(struct page *page)
1336{
Chao Yu695fd1e2014-02-27 19:52:21 +08001337 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001338 return (void *)&(ri->i_addr[1]);
1339}
1340
Chao Yu34d67de2014-09-24 18:15:19 +08001341static inline int f2fs_has_inline_dentry(struct inode *inode)
1342{
1343 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1344}
1345
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001346static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1347{
1348 if (!f2fs_has_inline_dentry(dir))
1349 kunmap(page);
1350}
1351
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001352static inline int f2fs_readonly(struct super_block *sb)
1353{
1354 return sb->s_flags & MS_RDONLY;
1355}
1356
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001357static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1358{
1359 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1360}
1361
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001362static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1363{
1364 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1365 sbi->sb->s_flags |= MS_RDONLY;
1366}
1367
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001368#define get_inode_mode(i) \
1369 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1370 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1371
Chao Yu267378d2014-04-23 14:10:24 +08001372/* get offset of first page in next direct node */
1373#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1374 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1375 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1376 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1377
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001378/*
1379 * file.c
1380 */
1381int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1382void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001383int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001384void f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001385int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001386int f2fs_setattr(struct dentry *, struct iattr *);
1387int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001388int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001389long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001390long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001391
1392/*
1393 * inode.c
1394 */
1395void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001396struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001397int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001398void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001399void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001400int f2fs_write_inode(struct inode *, struct writeback_control *);
1401void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001402void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001403
1404/*
1405 * namei.c
1406 */
1407struct dentry *f2fs_get_parent(struct dentry *child);
1408
1409/*
1410 * dir.c
1411 */
Chao Yudbeacf02014-09-24 18:17:04 +08001412extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Chao Yudbeacf02014-09-24 18:17:04 +08001413void set_de_type(struct f2fs_dir_entry *, struct inode *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001414struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *,
1415 struct f2fs_dentry_ptr *);
1416bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1417 unsigned int);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001418void do_make_empty_dir(struct inode *, struct inode *,
1419 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001420struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001421 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001422void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001423int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001424void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001425struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1426 struct page **);
1427struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1428ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1429void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1430 struct page *, struct inode *);
Jaegeuk Kim1cd14ca2013-07-18 18:02:31 +09001431int update_dent_inode(struct inode *, const struct qstr *);
Chao Yu3b4d7322015-02-16 16:17:20 +08001432void f2fs_update_dentry(struct inode *, struct f2fs_dentry_ptr *,
1433 const struct qstr *, f2fs_hash_t , unsigned int);
Al Virob7f7a5e2013-01-25 16:15:43 -05001434int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
Chao Yudbeacf02014-09-24 18:17:04 +08001435void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1436 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001437int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001438int f2fs_make_empty(struct inode *, struct inode *);
1439bool f2fs_empty_dir(struct inode *);
1440
Al Virob7f7a5e2013-01-25 16:15:43 -05001441static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1442{
1443 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1444 inode);
1445}
1446
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001447/*
1448 * super.c
1449 */
1450int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001451extern __printf(3, 4)
1452void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001453
1454/*
1455 * hash.c
1456 */
Gu Zhengeee61602014-06-24 18:21:23 +08001457f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001458
1459/*
1460 * node.c
1461 */
1462struct dnode_of_data;
1463struct node_info;
1464
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001465bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001466bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1467bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1468bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001469void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1470int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1471int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001472int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001473int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Gu Zheng58e674d2013-11-19 18:03:18 +08001474void remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001475struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001476struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001477void ra_node_page(struct f2fs_sb_info *, nid_t);
1478struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1479struct page *get_node_page_ra(struct page *, int);
1480void sync_inode_page(struct dnode_of_data *);
1481int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1482bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1483void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1484void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu70cfed82014-08-02 15:26:04 +08001485void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001486void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001487int recover_inode_page(struct f2fs_sb_info *, struct page *);
1488int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1489 struct f2fs_summary_block *);
1490void flush_nat_entries(struct f2fs_sb_info *);
1491int build_node_manager(struct f2fs_sb_info *);
1492void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001493int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001494void destroy_node_manager_caches(void);
1495
1496/*
1497 * segment.c
1498 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001499void register_inmem_page(struct inode *, struct page *);
1500void commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001501void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001502void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001503int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001504int create_flush_cmd_control(struct f2fs_sb_info *);
1505void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001506void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001507void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001508void clear_prefree_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001509void release_discard_addrs(struct f2fs_sb_info *);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -07001510void discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001511int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001512void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001513int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001514struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001515void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kimfb5566d2014-01-08 10:09:51 +09001516void write_node_page(struct f2fs_sb_info *, struct page *,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -08001517 unsigned int, struct f2fs_io_info *);
1518void write_data_page(struct page *, struct dnode_of_data *,
1519 struct f2fs_io_info *);
1520void rewrite_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001521void recover_data_page(struct f2fs_sb_info *, struct page *,
1522 struct f2fs_summary *, block_t, block_t);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001523void allocate_data_block(struct f2fs_sb_info *, struct page *,
1524 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001525void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001526void write_data_summaries(struct f2fs_sb_info *, block_t);
1527void write_node_summaries(struct f2fs_sb_info *, block_t);
1528int lookup_journal_in_cursum(struct f2fs_summary_block *,
1529 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001530void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001531int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001532void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001533int __init create_segment_manager_caches(void);
1534void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001535
1536/*
1537 * checkpoint.c
1538 */
1539struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1540struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim4c521f492014-09-11 13:49:55 -07001541int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
Chao Yu635aee12014-12-08 15:02:52 +08001542void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001543long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001544void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1545void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001546void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001547bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001548int acquire_orphan_inode(struct f2fs_sb_info *);
1549void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001550void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1551void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8f99a942013-11-28 15:43:43 +08001552void recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001553int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001554void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001555void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001556void remove_dirty_dir_inode(struct inode *);
1557void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001558void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001559void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001560int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001561void destroy_checkpoint_caches(void);
1562
1563/*
1564 * data.c
1565 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001566void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -08001567int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *,
1568 struct f2fs_io_info *);
1569void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *,
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001570 struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001571int reserve_new_block(struct dnode_of_data *);
Huajun Lib6009652013-11-10 23:13:18 +08001572int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Chao Yu429511c2015-02-05 17:54:31 +08001573void f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
1574void f2fs_destroy_extent_tree(struct inode *);
Chao Yu7e4dde72015-02-05 17:51:34 +08001575void f2fs_update_extent_cache(struct dnode_of_data *);
Jaegeuk Kimc718379b2013-04-24 13:19:56 +09001576struct page *find_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001577struct page *get_lock_data_page(struct inode *, pgoff_t);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001578struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001579int do_write_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001580int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu429511c2015-02-05 17:54:31 +08001581void init_extent_cache_info(struct f2fs_sb_info *);
1582int __init create_extent_cache(void);
1583void destroy_extent_cache(void);
Chao Yu487261f2015-02-05 17:44:29 +08001584void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1585int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001586
1587/*
1588 * gc.c
1589 */
1590int start_gc_thread(struct f2fs_sb_info *);
1591void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001592block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Jaegeuk Kim408e9372013-01-03 17:55:52 +09001593int f2fs_gc(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001594void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001595
1596/*
1597 * recovery.c
1598 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001599int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001600bool space_for_roll_forward(struct f2fs_sb_info *);
1601
1602/*
1603 * debug.c
1604 */
1605#ifdef CONFIG_F2FS_STAT_FS
1606struct f2fs_stat_info {
1607 struct list_head stat_list;
1608 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001609 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1610 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu4bf6fd92015-02-05 17:58:28 +08001611 int hit_ext, total_ext, ext_tree, ext_node;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001612 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001613 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001614 int total_count, utilization;
Jaegeuk Kimd24bdcb2015-01-30 16:43:11 -08001615 int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001616 unsigned int valid_count, valid_node_count, valid_inode_count;
1617 unsigned int bimodal, avg_vblocks;
1618 int util_free, util_valid, util_invalid;
1619 int rsvd_segs, overp_segs;
1620 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001621 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001622 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1623 int tot_blks, data_blks, node_blks;
1624 int curseg[NR_CURSEG_TYPE];
1625 int cursec[NR_CURSEG_TYPE];
1626 int curzone[NR_CURSEG_TYPE];
1627
1628 unsigned int segment_count[2];
1629 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001630 unsigned int inplace_count;
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -08001631 unsigned base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001632};
1633
Gu Zheng963d4f72013-07-12 14:47:11 +08001634static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1635{
Chris Fries6c311ec2014-01-17 14:44:39 -06001636 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001637}
1638
Changman Lee942e0be2014-02-13 15:12:29 +09001639#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001640#define stat_inc_call_count(si) ((si)->call_count++)
1641#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1642#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1643#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1644#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1645#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001646#define stat_inc_inline_inode(inode) \
1647 do { \
1648 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001649 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001650 } while (0)
1651#define stat_dec_inline_inode(inode) \
1652 do { \
1653 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001654 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001655 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001656#define stat_inc_inline_dir(inode) \
1657 do { \
1658 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001659 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001660 } while (0)
1661#define stat_dec_inline_dir(inode) \
1662 do { \
1663 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001664 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001665 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001666#define stat_inc_seg_type(sbi, curseg) \
1667 ((sbi)->segment_count[(curseg)->alloc_type]++)
1668#define stat_inc_block_count(sbi, curseg) \
1669 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001670#define stat_inc_inplace_blocks(sbi) \
1671 (atomic_inc(&(sbi)->inplace_count))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001672#define stat_inc_seg_count(sbi, type) \
1673 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001674 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001675 (si)->tot_segs++; \
1676 if (type == SUM_TYPE_DATA) \
1677 si->data_segs++; \
1678 else \
1679 si->node_segs++; \
1680 } while (0)
1681
1682#define stat_inc_tot_blk_count(si, blks) \
1683 (si->tot_blks += (blks))
1684
1685#define stat_inc_data_blk_count(sbi, blks) \
1686 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001687 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001688 stat_inc_tot_blk_count(si, blks); \
1689 si->data_blks += (blks); \
1690 } while (0)
1691
1692#define stat_inc_node_blk_count(sbi, blks) \
1693 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001694 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001695 stat_inc_tot_blk_count(si, blks); \
1696 si->node_blks += (blks); \
1697 } while (0)
1698
1699int f2fs_build_stats(struct f2fs_sb_info *);
1700void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001701void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001702void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001703#else
Changman Lee942e0be2014-02-13 15:12:29 +09001704#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001705#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001706#define stat_inc_bggc_count(si)
1707#define stat_inc_dirty_dir(sbi)
1708#define stat_dec_dirty_dir(sbi)
1709#define stat_inc_total_hit(sb)
1710#define stat_inc_read_hit(sb)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001711#define stat_inc_inline_inode(inode)
1712#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001713#define stat_inc_inline_dir(inode)
1714#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001715#define stat_inc_seg_type(sbi, curseg)
1716#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09001717#define stat_inc_inplace_blocks(sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001718#define stat_inc_seg_count(si, type)
1719#define stat_inc_tot_blk_count(si, blks)
1720#define stat_inc_data_blk_count(si, blks)
1721#define stat_inc_node_blk_count(sbi, blks)
1722
1723static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1724static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001725static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09001726static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001727#endif
1728
1729extern const struct file_operations f2fs_dir_operations;
1730extern const struct file_operations f2fs_file_operations;
1731extern const struct inode_operations f2fs_file_inode_operations;
1732extern const struct address_space_operations f2fs_dblock_aops;
1733extern const struct address_space_operations f2fs_node_aops;
1734extern const struct address_space_operations f2fs_meta_aops;
1735extern const struct inode_operations f2fs_dir_inode_operations;
1736extern const struct inode_operations f2fs_symlink_inode_operations;
1737extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08001738extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08001739
Huajun Lie18c65b2013-11-10 23:13:19 +08001740/*
1741 * inline.c
1742 */
Huajun Lie18c65b2013-11-10 23:13:19 +08001743bool f2fs_may_inline(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001744void read_inline_data(struct page *, struct page *);
Huajun Lie18c65b2013-11-10 23:13:19 +08001745int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001746int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1747int f2fs_convert_inline_inode(struct inode *);
1748int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07001749bool recover_inline_data(struct inode *, struct page *);
Chao Yu201a05b2014-09-24 18:17:53 +08001750struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *,
1751 struct page **);
1752struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1753int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
1754int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *);
1755void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1756 struct inode *, struct inode *);
1757bool f2fs_empty_inline_dir(struct inode *);
1758int f2fs_read_inline_dir(struct file *, struct dir_context *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001759#endif