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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
Jaegeuk Kim1abff932015-01-08 19:15:53 -0800220/*
221 * should be same as XFS_IOC_GOINGDOWN.
222 * Flags for going down operation used by FS_IOC_GOINGDOWN
223 */
224#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
225#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
226#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
227#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
228
Namjae Jeone9750822013-02-04 23:41:41 +0900229#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
230/*
231 * ioctl commands in 32 bit emulation
232 */
233#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
234#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
235#endif
236
237/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900238 * For INODE and NODE manager
239 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700240/* for directory operations */
241struct f2fs_dentry_ptr {
242 const void *bitmap;
243 struct f2fs_dir_entry *dentry;
244 __u8 (*filename)[F2FS_SLOT_LEN];
245 int max;
246};
247
248static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d,
249 void *src, int type)
250{
251 if (type == 1) {
252 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
253 d->max = NR_DENTRY_IN_BLOCK;
254 d->bitmap = &t->dentry_bitmap;
255 d->dentry = t->dentry;
256 d->filename = t->filename;
257 } else {
258 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
259 d->max = NR_INLINE_DENTRY;
260 d->bitmap = &t->dentry_bitmap;
261 d->dentry = t->dentry;
262 d->filename = t->filename;
263 }
264}
265
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900266/*
267 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
268 * as its node offset to distinguish from index node blocks.
269 * But some bits are used to mark the node block.
270 */
271#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
272 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900273enum {
274 ALLOC_NODE, /* allocate a new node page if needed */
275 LOOKUP_NODE, /* look up a node without readahead */
276 LOOKUP_NODE_RA, /*
277 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800278 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900279 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900280};
281
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900282#define F2FS_LINK_MAX 32000 /* maximum link count per file */
283
Chao Yu817202d92014-04-28 17:59:43 +0800284#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
285
Chao Yu13054c52015-02-05 17:52:58 +0800286/* vector size for gang look-up from extent cache that consists of radix tree */
287#define EXT_TREE_VEC_SIZE 64
288
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900289/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800290#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
291
292/* number of extent info in extent cache we try to shrink */
293#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900294
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900295struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800296 unsigned int fofs; /* start offset in a file */
297 u32 blk; /* start block address of the extent */
298 unsigned int len; /* length of the extent */
299};
300
301struct extent_node {
302 struct rb_node rb_node; /* rb node located in rb-tree */
303 struct list_head list; /* node in global extent list of sbi */
304 struct extent_info ei; /* extent info */
305};
306
307struct extent_tree {
308 nid_t ino; /* inode number */
309 struct rb_root root; /* root of extent info rb-tree */
Chao Yu62c8af62015-02-05 18:01:39 +0800310 struct extent_node *cached_en; /* recently accessed extent node */
Chao Yu13054c52015-02-05 17:52:58 +0800311 rwlock_t lock; /* protect extent info rb-tree */
312 atomic_t refcount; /* reference count of rb-tree */
313 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900314};
315
316/*
317 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
318 */
319#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900320#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900321
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900322#define DEF_DIR_LEVEL 0
323
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900324struct f2fs_inode_info {
325 struct inode vfs_inode; /* serve a vfs inode */
326 unsigned long i_flags; /* keep an inode flags for ioctl */
327 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900328 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900329 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900330 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900331 umode_t i_acl_mode; /* keep file acl mode temporarily */
332
333 /* Use below internally in f2fs*/
334 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900335 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700336 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900337 f2fs_hash_t chash; /* hash value of given file name */
338 unsigned int clevel; /* maximum level of given file name */
339 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900340 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900341 struct extent_info ext; /* in-memory extent cache entry */
Chao Yu0c872e22015-02-05 17:46:29 +0800342 rwlock_t ext_lock; /* rwlock for single extent cache */
Chao Yu06292072014-12-29 15:56:18 +0800343 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700344
Jaegeuk Kim34ba94b2014-10-09 13:19:53 -0700345 struct radix_tree_root inmem_root; /* radix tree for inmem pages */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700346 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
347 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900348};
349
350static inline void get_extent_info(struct extent_info *ext,
351 struct f2fs_extent i_ext)
352{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900353 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800354 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900355 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900356}
357
358static inline void set_raw_extent(struct extent_info *ext,
359 struct f2fs_extent *i_ext)
360{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900361 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800362 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900363 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900364}
365
Chao Yu429511c2015-02-05 17:54:31 +0800366static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
367 u32 blk, unsigned int len)
368{
369 ei->fofs = fofs;
370 ei->blk = blk;
371 ei->len = len;
372}
373
374static inline bool __is_extent_mergeable(struct extent_info *back,
375 struct extent_info *front)
376{
377 return (back->fofs + back->len == front->fofs &&
378 back->blk + back->len == front->blk);
379}
380
381static inline bool __is_back_mergeable(struct extent_info *cur,
382 struct extent_info *back)
383{
384 return __is_extent_mergeable(back, cur);
385}
386
387static inline bool __is_front_mergeable(struct extent_info *cur,
388 struct extent_info *front)
389{
390 return __is_extent_mergeable(cur, front);
391}
392
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900393struct f2fs_nm_info {
394 block_t nat_blkaddr; /* base disk address of NAT */
395 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900396 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900397 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900398 unsigned int ram_thresh; /* control the memory footprint */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900399
400 /* NAT cache management */
401 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700402 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800403 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900404 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700405 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800406 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900407
408 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900409 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900410 struct list_head free_nid_list; /* a list for free nids */
411 spinlock_t free_nid_list_lock; /* protect free nid list */
412 unsigned int fcnt; /* the number of free node id */
413 struct mutex build_lock; /* lock for build free nids */
414
415 /* for checkpoint */
416 char *nat_bitmap; /* NAT bitmap pointer */
417 int bitmap_size; /* bitmap size */
418};
419
420/*
421 * this structure is used as one of function parameters.
422 * all the information are dedicated to a given direct node block determined
423 * by the data offset in a file.
424 */
425struct dnode_of_data {
426 struct inode *inode; /* vfs inode pointer */
427 struct page *inode_page; /* its inode page, NULL is possible */
428 struct page *node_page; /* cached direct node page */
429 nid_t nid; /* node id of the direct node block */
430 unsigned int ofs_in_node; /* data offset in the node page */
431 bool inode_page_locked; /* inode page is locked or not */
432 block_t data_blkaddr; /* block address of the node block */
433};
434
435static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
436 struct page *ipage, struct page *npage, nid_t nid)
437{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900438 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900439 dn->inode = inode;
440 dn->inode_page = ipage;
441 dn->node_page = npage;
442 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900443}
444
445/*
446 * For SIT manager
447 *
448 * By default, there are 6 active log areas across the whole main area.
449 * When considering hot and cold data separation to reduce cleaning overhead,
450 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
451 * respectively.
452 * In the current design, you should not change the numbers intentionally.
453 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
454 * logs individually according to the underlying devices. (default: 6)
455 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
456 * data and 8 for node logs.
457 */
458#define NR_CURSEG_DATA_TYPE (3)
459#define NR_CURSEG_NODE_TYPE (3)
460#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
461
462enum {
463 CURSEG_HOT_DATA = 0, /* directory entry blocks */
464 CURSEG_WARM_DATA, /* data blocks */
465 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
466 CURSEG_HOT_NODE, /* direct node blocks of directory files */
467 CURSEG_WARM_NODE, /* direct node blocks of normal files */
468 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800469 NO_CHECK_TYPE,
470 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900471};
472
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900473struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900474 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800475 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900476 int ret;
477};
478
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800479struct flush_cmd_control {
480 struct task_struct *f2fs_issue_flush; /* flush thread */
481 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800482 struct llist_head issue_list; /* list for command issue */
483 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800484};
485
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900486struct f2fs_sm_info {
487 struct sit_info *sit_info; /* whole segment information */
488 struct free_segmap_info *free_info; /* free segment information */
489 struct dirty_seglist_info *dirty_info; /* dirty segment information */
490 struct curseg_info *curseg_array; /* active segment information */
491
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900492 block_t seg0_blkaddr; /* block address of 0'th segment */
493 block_t main_blkaddr; /* start block address of main area */
494 block_t ssa_blkaddr; /* start block address of SSA area */
495
496 unsigned int segment_count; /* total # of segments */
497 unsigned int main_segments; /* # of segments in main area */
498 unsigned int reserved_segments; /* # of reserved segments */
499 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900500
501 /* a threshold to reclaim prefree segments */
502 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900503
504 /* for small discard management */
505 struct list_head discard_list; /* 4KB discard list */
506 int nr_discards; /* # of discards in the list */
507 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900508
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800509 /* for batched trimming */
510 unsigned int trim_sections; /* # of sections to trim */
511
Chao Yu184a5cd2014-09-04 18:13:01 +0800512 struct list_head sit_entry_set; /* sit entry set list */
513
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900514 unsigned int ipu_policy; /* in-place-update policy */
515 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700516 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900517
518 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800519 struct flush_cmd_control *cmd_control_info;
520
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900521};
522
523/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900524 * For superblock
525 */
526/*
527 * COUNT_TYPE for monitoring
528 *
529 * f2fs monitors the number of several block types such as on-writeback,
530 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
531 */
532enum count_type {
533 F2FS_WRITEBACK,
534 F2FS_DIRTY_DENTS,
535 F2FS_DIRTY_NODES,
536 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800537 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900538 NR_COUNT_TYPE,
539};
540
541/*
arter97e1c42042014-08-06 23:22:50 +0900542 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900543 * The available types are:
544 * DATA User data pages. It operates as async mode.
545 * NODE Node pages. It operates as async mode.
546 * META FS metadata pages such as SIT, NAT, CP.
547 * NR_PAGE_TYPE The number of page types.
548 * META_FLUSH Make sure the previous pages are written
549 * with waiting the bio's completion
550 * ... Only can be used with META.
551 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900552#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900553enum page_type {
554 DATA,
555 NODE,
556 META,
557 NR_PAGE_TYPE,
558 META_FLUSH,
559};
560
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900561struct f2fs_io_info {
Gu Zheng7e8f2302013-12-20 18:17:49 +0800562 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
563 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800564 block_t blk_addr; /* block address to be written */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900565};
566
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900567#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900568struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900569 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900570 struct bio *bio; /* bios to merge */
571 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900572 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800573 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900574};
575
Chao Yu67298802014-11-18 11:18:36 +0800576/* for inner inode cache management */
577struct inode_management {
578 struct radix_tree_root ino_root; /* ino entry array */
579 spinlock_t ino_lock; /* for ino entry lock */
580 struct list_head ino_list; /* inode list head */
581 unsigned long ino_num; /* number of entries */
582};
583
Chao Yucaf00472015-01-28 17:48:42 +0800584/* For s_flag in struct f2fs_sb_info */
585enum {
586 SBI_IS_DIRTY, /* dirty flag for checkpoint */
587 SBI_IS_CLOSE, /* specify unmounting */
588 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
589 SBI_POR_DOING, /* recovery is doing or not */
590};
591
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900592struct f2fs_sb_info {
593 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900594 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900595 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
596 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800597 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900598
599 /* for node-related operations */
600 struct f2fs_nm_info *nm_info; /* node manager */
601 struct inode *node_inode; /* cache node blocks */
602
603 /* for segment-related operations */
604 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900605
606 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800607 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900608 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900609
610 /* for checkpoint */
611 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
612 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900613 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800614 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800615 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900616 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900617 wait_queue_head_t cp_wait;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900618
Chao Yu67298802014-11-18 11:18:36 +0800619 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700620
621 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800622 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900623
624 /* for directory inode management */
625 struct list_head dir_inode_list; /* dir inode list */
626 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900627
Chao Yu13054c52015-02-05 17:52:58 +0800628 /* for extent tree cache */
629 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
630 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
631 struct list_head extent_list; /* lru list for shrinker */
632 spinlock_t extent_lock; /* locking extent lru list */
633 int total_ext_tree; /* extent tree count */
634 atomic_t total_ext_node; /* extent info count */
635
arter97e1c42042014-08-06 23:22:50 +0900636 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900637 unsigned int log_sectors_per_block; /* log2 sectors per block */
638 unsigned int log_blocksize; /* log2 block size */
639 unsigned int blocksize; /* block size */
640 unsigned int root_ino_num; /* root inode number*/
641 unsigned int node_ino_num; /* node inode number*/
642 unsigned int meta_ino_num; /* meta inode number*/
643 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
644 unsigned int blocks_per_seg; /* blocks per segment */
645 unsigned int segs_per_sec; /* segments per section */
646 unsigned int secs_per_zone; /* sections per zone */
647 unsigned int total_sections; /* total section count */
648 unsigned int total_node_count; /* total node block count */
649 unsigned int total_valid_node_count; /* valid node block count */
650 unsigned int total_valid_inode_count; /* valid inode count */
651 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900652 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900653
654 block_t user_block_count; /* # of user blocks */
655 block_t total_valid_block_count; /* # of valid blocks */
656 block_t alloc_valid_block_count; /* # of allocated blocks */
657 block_t last_valid_block_count; /* for recovery */
658 u32 s_next_generation; /* for NFS support */
659 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
660
661 struct f2fs_mount_info mount_opt; /* mount options */
662
663 /* for cleaning operations */
664 struct mutex gc_mutex; /* mutex for GC */
665 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900666 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900667
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900668 /* maximum # of trials to find a victim segment for SSR and GC */
669 unsigned int max_victim_search;
670
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900671 /*
672 * for stat information.
673 * one is for the LFS mode, and the other is for the SSR mode.
674 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900675#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900676 struct f2fs_stat_info *stat_info; /* FS status information */
677 unsigned int segment_count[2]; /* # of allocated segments */
678 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900679 atomic_t inplace_count; /* # of inplace update */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900680 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
Chao Yu03e14d52014-12-08 19:08:20 +0800681 atomic_t inline_inode; /* # of inline_data inodes */
682 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900683 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900684 unsigned int n_dirty_dirs; /* # of dir inodes */
685#endif
686 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900687 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900688
689 /* For sysfs suppport */
690 struct kobject s_kobj;
691 struct completion s_kobj_unregister;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900692};
693
694/*
695 * Inline functions
696 */
697static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
698{
699 return container_of(inode, struct f2fs_inode_info, vfs_inode);
700}
701
702static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
703{
704 return sb->s_fs_info;
705}
706
Jaegeuk Kim40813632014-09-02 15:31:18 -0700707static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
708{
709 return F2FS_SB(inode->i_sb);
710}
711
712static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
713{
714 return F2FS_I_SB(mapping->host);
715}
716
717static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
718{
719 return F2FS_M_SB(page->mapping);
720}
721
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900722static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
723{
724 return (struct f2fs_super_block *)(sbi->raw_super);
725}
726
727static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
728{
729 return (struct f2fs_checkpoint *)(sbi->ckpt);
730}
731
Gu Zheng45590712013-07-15 17:57:38 +0800732static inline struct f2fs_node *F2FS_NODE(struct page *page)
733{
734 return (struct f2fs_node *)page_address(page);
735}
736
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900737static inline struct f2fs_inode *F2FS_INODE(struct page *page)
738{
739 return &((struct f2fs_node *)page_address(page))->i;
740}
741
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900742static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
743{
744 return (struct f2fs_nm_info *)(sbi->nm_info);
745}
746
747static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
748{
749 return (struct f2fs_sm_info *)(sbi->sm_info);
750}
751
752static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
753{
754 return (struct sit_info *)(SM_I(sbi)->sit_info);
755}
756
757static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
758{
759 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
760}
761
762static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
763{
764 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
765}
766
Gu Zheng9df27d92014-01-20 18:37:04 +0800767static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
768{
769 return sbi->meta_inode->i_mapping;
770}
771
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900772static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
773{
774 return sbi->node_inode->i_mapping;
775}
776
Chao Yucaf00472015-01-28 17:48:42 +0800777static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900778{
Chao Yucaf00472015-01-28 17:48:42 +0800779 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900780}
781
Chao Yucaf00472015-01-28 17:48:42 +0800782static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900783{
Chao Yucaf00472015-01-28 17:48:42 +0800784 sbi->s_flag |= (0x01 << type);
785}
786
787static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
788{
789 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900790}
791
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900792static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
793{
794 return le64_to_cpu(cp->checkpoint_ver);
795}
796
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900797static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
798{
799 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
800 return ckpt_flags & f;
801}
802
803static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
804{
805 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
806 ckpt_flags |= f;
807 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
808}
809
810static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
811{
812 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
813 ckpt_flags &= (~f);
814 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
815}
816
Gu Zhenge4795562013-09-27 18:08:30 +0800817static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900818{
Gu Zhenge4795562013-09-27 18:08:30 +0800819 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900820}
821
Gu Zhenge4795562013-09-27 18:08:30 +0800822static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900823{
Gu Zhenge4795562013-09-27 18:08:30 +0800824 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900825}
826
Gu Zhenge4795562013-09-27 18:08:30 +0800827static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900828{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900829 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900830}
831
Gu Zhenge4795562013-09-27 18:08:30 +0800832static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900833{
Gu Zhenge4795562013-09-27 18:08:30 +0800834 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900835}
836
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800837static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
838{
839 int reason = CP_SYNC;
840
841 if (test_opt(sbi, FASTBOOT))
842 reason = CP_FASTBOOT;
843 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
844 reason = CP_UMOUNT;
845 return reason;
846}
847
848static inline bool __remain_node_summaries(int reason)
849{
850 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
851}
852
853static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
854{
855 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
856 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
857}
858
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900859/*
860 * Check whether the given nid is within node id range.
861 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900862static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900863{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800864 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
865 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800866 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +0900867 return -EINVAL;
868 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900869}
870
871#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
872
873/*
874 * Check whether the inode has blocks or not
875 */
876static inline int F2FS_HAS_BLOCKS(struct inode *inode)
877{
878 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -0600879 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900880 else
Chris Fries6c311ec2014-01-17 14:44:39 -0600881 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900882}
883
Chao Yu4bc8e9b2014-03-17 16:35:06 +0800884static inline bool f2fs_has_xattr_block(unsigned int ofs)
885{
886 return ofs == XATTR_NODE_OFFSET;
887}
888
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900889static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
890 struct inode *inode, blkcnt_t count)
891{
892 block_t valid_block_count;
893
894 spin_lock(&sbi->stat_lock);
895 valid_block_count =
896 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +0800897 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900898 spin_unlock(&sbi->stat_lock);
899 return false;
900 }
901 inode->i_blocks += count;
902 sbi->total_valid_block_count = valid_block_count;
903 sbi->alloc_valid_block_count += (block_t)count;
904 spin_unlock(&sbi->stat_lock);
905 return true;
906}
907
Gu Zhengda19b0d2013-11-19 18:03:27 +0800908static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900909 struct inode *inode,
910 blkcnt_t count)
911{
912 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700913 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
914 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900915 inode->i_blocks -= count;
916 sbi->total_valid_block_count -= (block_t)count;
917 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900918}
919
920static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
921{
922 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +0800923 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900924}
925
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700926static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900927{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700928 atomic_inc(&F2FS_I(inode)->dirty_pages);
929 if (S_ISDIR(inode->i_mode))
930 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900931}
932
933static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
934{
935 atomic_dec(&sbi->nr_pages[count_type]);
936}
937
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700938static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900939{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700940 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +0900941 return;
942
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700943 atomic_dec(&F2FS_I(inode)->dirty_pages);
944
945 if (S_ISDIR(inode->i_mode))
946 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900947}
948
949static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
950{
951 return atomic_read(&sbi->nr_pages[count_type]);
952}
953
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700954static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900955{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700956 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900957}
958
Namjae Jeon5ac206c2013-02-02 23:52:59 +0900959static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
960{
961 unsigned int pages_per_sec = sbi->segs_per_sec *
962 (1 << sbi->log_blocks_per_seg);
963 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
964 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
965}
966
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900967static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
968{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +0900969 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900970}
971
972static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
973{
974 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
975
976 /* return NAT or SIT bitmap */
977 if (flag == NAT_BITMAP)
978 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
979 else if (flag == SIT_BITMAP)
980 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
981
982 return 0;
983}
984
Wanpeng Li55141482015-02-26 07:57:20 +0800985static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
986{
987 return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
988}
989
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900990static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
991{
992 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +0900993 int offset;
994
Wanpeng Li55141482015-02-26 07:57:20 +0800995 if (__cp_payload(sbi) > 0) {
Changman Lee1dbe4152014-05-12 12:27:43 +0900996 if (flag == NAT_BITMAP)
997 return &ckpt->sit_nat_version_bitmap;
998 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -0700999 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +09001000 } else {
1001 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001002 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +09001003 return &ckpt->sit_nat_version_bitmap + offset;
1004 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001005}
1006
1007static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
1008{
1009 block_t start_addr;
1010 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +09001011 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001012
Jaegeuk Kim25ca9232012-11-28 16:12:41 +09001013 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001014
1015 /*
1016 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +09001017 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001018 */
1019 if (!(ckpt_version & 1))
1020 start_addr += sbi->blocks_per_seg;
1021
1022 return start_addr;
1023}
1024
1025static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
1026{
1027 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
1028}
1029
1030static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001031 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001032{
1033 block_t valid_block_count;
1034 unsigned int valid_node_count;
1035
1036 spin_lock(&sbi->stat_lock);
1037
Gu Zhengef86d702013-11-19 18:03:38 +08001038 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001039 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001040 spin_unlock(&sbi->stat_lock);
1041 return false;
1042 }
1043
Gu Zhengef86d702013-11-19 18:03:38 +08001044 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001045 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001046 spin_unlock(&sbi->stat_lock);
1047 return false;
1048 }
1049
1050 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001051 inode->i_blocks++;
1052
1053 sbi->alloc_valid_block_count++;
1054 sbi->total_valid_node_count++;
1055 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001056 spin_unlock(&sbi->stat_lock);
1057
1058 return true;
1059}
1060
1061static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001062 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001063{
1064 spin_lock(&sbi->stat_lock);
1065
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001066 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1067 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1068 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001069
Gu Zhengef86d702013-11-19 18:03:38 +08001070 inode->i_blocks--;
1071 sbi->total_valid_node_count--;
1072 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001073
1074 spin_unlock(&sbi->stat_lock);
1075}
1076
1077static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1078{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001079 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001080}
1081
1082static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1083{
1084 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001085 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001086 sbi->total_valid_inode_count++;
1087 spin_unlock(&sbi->stat_lock);
1088}
1089
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001090static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001091{
1092 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001093 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001094 sbi->total_valid_inode_count--;
1095 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001096}
1097
1098static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1099{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001100 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001101}
1102
1103static inline void f2fs_put_page(struct page *page, int unlock)
1104{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001105 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001106 return;
1107
1108 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001109 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001110 unlock_page(page);
1111 }
1112 page_cache_release(page);
1113}
1114
1115static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1116{
1117 if (dn->node_page)
1118 f2fs_put_page(dn->node_page, 1);
1119 if (dn->inode_page && dn->node_page != dn->inode_page)
1120 f2fs_put_page(dn->inode_page, 0);
1121 dn->node_page = NULL;
1122 dn->inode_page = NULL;
1123}
1124
1125static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001126 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001127{
Gu Zhenge8512d22014-03-07 18:43:28 +08001128 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001129}
1130
Gu Zheng7bd59382013-10-22 14:52:26 +08001131static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1132 gfp_t flags)
1133{
1134 void *entry;
1135retry:
1136 entry = kmem_cache_alloc(cachep, flags);
1137 if (!entry) {
1138 cond_resched();
1139 goto retry;
1140 }
1141
1142 return entry;
1143}
1144
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001145static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1146 unsigned long index, void *item)
1147{
1148 while (radix_tree_insert(root, index, item))
1149 cond_resched();
1150}
1151
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001152#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1153
1154static inline bool IS_INODE(struct page *page)
1155{
Gu Zheng45590712013-07-15 17:57:38 +08001156 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001157 return RAW_IS_INODE(p);
1158}
1159
1160static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1161{
1162 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1163}
1164
1165static inline block_t datablock_addr(struct page *node_page,
1166 unsigned int offset)
1167{
1168 struct f2fs_node *raw_node;
1169 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001170 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001171 addr_array = blkaddr_in_node(raw_node);
1172 return le32_to_cpu(addr_array[offset]);
1173}
1174
1175static inline int f2fs_test_bit(unsigned int nr, char *addr)
1176{
1177 int mask;
1178
1179 addr += (nr >> 3);
1180 mask = 1 << (7 - (nr & 0x07));
1181 return mask & *addr;
1182}
1183
Gu Zheng52aca072014-10-20 17:45:51 +08001184static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001185{
1186 int mask;
1187 int ret;
1188
1189 addr += (nr >> 3);
1190 mask = 1 << (7 - (nr & 0x07));
1191 ret = mask & *addr;
1192 *addr |= mask;
1193 return ret;
1194}
1195
Gu Zheng52aca072014-10-20 17:45:51 +08001196static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001197{
1198 int mask;
1199 int ret;
1200
1201 addr += (nr >> 3);
1202 mask = 1 << (7 - (nr & 0x07));
1203 ret = mask & *addr;
1204 *addr &= ~mask;
1205 return ret;
1206}
1207
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001208static inline void f2fs_change_bit(unsigned int nr, char *addr)
1209{
1210 int mask;
1211
1212 addr += (nr >> 3);
1213 mask = 1 << (7 - (nr & 0x07));
1214 *addr ^= mask;
1215}
1216
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001217/* used for f2fs_inode_info->flags */
1218enum {
1219 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001220 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001221 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001222 FI_INC_LINK, /* need to increment i_nlink */
1223 FI_ACL_MODE, /* indicate acl mode */
1224 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001225 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001226 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001227 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001228 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001229 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001230 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001231 FI_APPEND_WRITE, /* inode has appended data */
1232 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001233 FI_NEED_IPU, /* used for ipu per file */
1234 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001235 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001236 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001237 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001238};
1239
1240static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1241{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001242 if (!test_bit(flag, &fi->flags))
1243 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001244}
1245
1246static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1247{
1248 return test_bit(flag, &fi->flags);
1249}
1250
1251static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1252{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001253 if (test_bit(flag, &fi->flags))
1254 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001255}
1256
1257static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1258{
1259 fi->i_acl_mode = mode;
1260 set_inode_flag(fi, FI_ACL_MODE);
1261}
1262
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001263static inline void get_inline_info(struct f2fs_inode_info *fi,
1264 struct f2fs_inode *ri)
1265{
1266 if (ri->i_inline & F2FS_INLINE_XATTR)
1267 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001268 if (ri->i_inline & F2FS_INLINE_DATA)
1269 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001270 if (ri->i_inline & F2FS_INLINE_DENTRY)
1271 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001272 if (ri->i_inline & F2FS_DATA_EXIST)
1273 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001274}
1275
1276static inline void set_raw_inline(struct f2fs_inode_info *fi,
1277 struct f2fs_inode *ri)
1278{
1279 ri->i_inline = 0;
1280
1281 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1282 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001283 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1284 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001285 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1286 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001287 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1288 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001289}
1290
Chao Yu987c7c32014-03-12 15:59:03 +08001291static inline int f2fs_has_inline_xattr(struct inode *inode)
1292{
1293 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1294}
1295
Jaegeuk Kimde936532013-08-12 21:08:03 +09001296static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1297{
Chao Yu987c7c32014-03-12 15:59:03 +08001298 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001299 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1300 return DEF_ADDRS_PER_INODE;
1301}
1302
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001303static inline void *inline_xattr_addr(struct page *page)
1304{
Chao Yu695fd1e2014-02-27 19:52:21 +08001305 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001306 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1307 F2FS_INLINE_XATTR_ADDRS]);
1308}
1309
1310static inline int inline_xattr_size(struct inode *inode)
1311{
Chao Yu987c7c32014-03-12 15:59:03 +08001312 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001313 return F2FS_INLINE_XATTR_ADDRS << 2;
1314 else
1315 return 0;
1316}
1317
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001318static inline int f2fs_has_inline_data(struct inode *inode)
1319{
1320 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1321}
1322
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001323static inline void f2fs_clear_inline_inode(struct inode *inode)
1324{
1325 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1326 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1327}
1328
1329static inline int f2fs_exist_data(struct inode *inode)
1330{
1331 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1332}
1333
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001334static inline bool f2fs_is_atomic_file(struct inode *inode)
1335{
1336 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1337}
1338
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001339static inline bool f2fs_is_volatile_file(struct inode *inode)
1340{
1341 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1342}
1343
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001344static inline bool f2fs_is_drop_cache(struct inode *inode)
1345{
1346 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1347}
1348
Huajun Li1001b342013-11-10 23:13:16 +08001349static inline void *inline_data_addr(struct page *page)
1350{
Chao Yu695fd1e2014-02-27 19:52:21 +08001351 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001352 return (void *)&(ri->i_addr[1]);
1353}
1354
Chao Yu34d67de2014-09-24 18:15:19 +08001355static inline int f2fs_has_inline_dentry(struct inode *inode)
1356{
1357 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1358}
1359
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001360static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1361{
1362 if (!f2fs_has_inline_dentry(dir))
1363 kunmap(page);
1364}
1365
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001366static inline int f2fs_readonly(struct super_block *sb)
1367{
1368 return sb->s_flags & MS_RDONLY;
1369}
1370
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001371static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1372{
1373 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1374}
1375
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001376static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1377{
1378 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1379 sbi->sb->s_flags |= MS_RDONLY;
1380}
1381
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001382#define get_inode_mode(i) \
1383 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1384 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1385
Chao Yu267378d2014-04-23 14:10:24 +08001386/* get offset of first page in next direct node */
1387#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1388 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1389 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1390 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1391
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001392/*
1393 * file.c
1394 */
1395int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1396void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001397int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001398void f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001399int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001400int f2fs_setattr(struct dentry *, struct iattr *);
1401int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001402int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001403long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001404long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001405
1406/*
1407 * inode.c
1408 */
1409void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001410struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001411int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001412void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001413void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001414int f2fs_write_inode(struct inode *, struct writeback_control *);
1415void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001416void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001417
1418/*
1419 * namei.c
1420 */
1421struct dentry *f2fs_get_parent(struct dentry *child);
1422
1423/*
1424 * dir.c
1425 */
Chao Yudbeacf02014-09-24 18:17:04 +08001426extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Chao Yudbeacf02014-09-24 18:17:04 +08001427void set_de_type(struct f2fs_dir_entry *, struct inode *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001428struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *,
1429 struct f2fs_dentry_ptr *);
1430bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1431 unsigned int);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001432void do_make_empty_dir(struct inode *, struct inode *,
1433 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001434struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001435 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001436void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001437int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001438void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001439struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1440 struct page **);
1441struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1442ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1443void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1444 struct page *, struct inode *);
Jaegeuk Kim1cd14ca2013-07-18 18:02:31 +09001445int update_dent_inode(struct inode *, const struct qstr *);
Chao Yu3b4d7322015-02-16 16:17:20 +08001446void f2fs_update_dentry(struct inode *, struct f2fs_dentry_ptr *,
1447 const struct qstr *, f2fs_hash_t , unsigned int);
Al Virob7f7a5e2013-01-25 16:15:43 -05001448int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
Chao Yudbeacf02014-09-24 18:17:04 +08001449void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1450 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001451int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001452int f2fs_make_empty(struct inode *, struct inode *);
1453bool f2fs_empty_dir(struct inode *);
1454
Al Virob7f7a5e2013-01-25 16:15:43 -05001455static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1456{
1457 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1458 inode);
1459}
1460
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001461/*
1462 * super.c
1463 */
1464int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001465extern __printf(3, 4)
1466void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001467
1468/*
1469 * hash.c
1470 */
Gu Zhengeee61602014-06-24 18:21:23 +08001471f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001472
1473/*
1474 * node.c
1475 */
1476struct dnode_of_data;
1477struct node_info;
1478
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001479bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001480bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1481bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1482bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001483void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1484int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1485int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001486int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001487int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Gu Zheng58e674d2013-11-19 18:03:18 +08001488void remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001489struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001490struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001491void ra_node_page(struct f2fs_sb_info *, nid_t);
1492struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1493struct page *get_node_page_ra(struct page *, int);
1494void sync_inode_page(struct dnode_of_data *);
1495int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1496bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1497void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1498void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu70cfed82014-08-02 15:26:04 +08001499void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001500void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001501int recover_inode_page(struct f2fs_sb_info *, struct page *);
1502int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1503 struct f2fs_summary_block *);
1504void flush_nat_entries(struct f2fs_sb_info *);
1505int build_node_manager(struct f2fs_sb_info *);
1506void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001507int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001508void destroy_node_manager_caches(void);
1509
1510/*
1511 * segment.c
1512 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001513void register_inmem_page(struct inode *, struct page *);
1514void commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001515void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001516void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001517int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001518int create_flush_cmd_control(struct f2fs_sb_info *);
1519void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001520void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001521void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001522void clear_prefree_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001523void release_discard_addrs(struct f2fs_sb_info *);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -07001524void discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001525int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001526void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001527int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001528struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001529void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kimfb5566d2014-01-08 10:09:51 +09001530void write_node_page(struct f2fs_sb_info *, struct page *,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -08001531 unsigned int, struct f2fs_io_info *);
1532void write_data_page(struct page *, struct dnode_of_data *,
1533 struct f2fs_io_info *);
1534void rewrite_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001535void recover_data_page(struct f2fs_sb_info *, struct page *,
1536 struct f2fs_summary *, block_t, block_t);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001537void allocate_data_block(struct f2fs_sb_info *, struct page *,
1538 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001539void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001540void write_data_summaries(struct f2fs_sb_info *, block_t);
1541void write_node_summaries(struct f2fs_sb_info *, block_t);
1542int lookup_journal_in_cursum(struct f2fs_summary_block *,
1543 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001544void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001545int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001546void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001547int __init create_segment_manager_caches(void);
1548void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001549
1550/*
1551 * checkpoint.c
1552 */
1553struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1554struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim4c521f492014-09-11 13:49:55 -07001555int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
Chao Yu635aee12014-12-08 15:02:52 +08001556void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001557long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001558void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1559void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001560void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001561bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001562int acquire_orphan_inode(struct f2fs_sb_info *);
1563void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001564void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1565void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8f99a942013-11-28 15:43:43 +08001566void recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001567int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001568void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001569void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001570void remove_dirty_dir_inode(struct inode *);
1571void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001572void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001573void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001574int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001575void destroy_checkpoint_caches(void);
1576
1577/*
1578 * data.c
1579 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001580void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -08001581int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *,
1582 struct f2fs_io_info *);
1583void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *,
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001584 struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001585int reserve_new_block(struct dnode_of_data *);
Huajun Lib6009652013-11-10 23:13:18 +08001586int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Chao Yu429511c2015-02-05 17:54:31 +08001587void f2fs_shrink_extent_tree(struct f2fs_sb_info *, int);
1588void f2fs_destroy_extent_tree(struct inode *);
Chao Yu7e4dde72015-02-05 17:51:34 +08001589void f2fs_update_extent_cache(struct dnode_of_data *);
Jaegeuk Kimc718379b2013-04-24 13:19:56 +09001590struct page *find_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001591struct page *get_lock_data_page(struct inode *, pgoff_t);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001592struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001593int do_write_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001594int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu429511c2015-02-05 17:54:31 +08001595void init_extent_cache_info(struct f2fs_sb_info *);
1596int __init create_extent_cache(void);
1597void destroy_extent_cache(void);
Chao Yu487261f2015-02-05 17:44:29 +08001598void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1599int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001600
1601/*
1602 * gc.c
1603 */
1604int start_gc_thread(struct f2fs_sb_info *);
1605void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001606block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Jaegeuk Kim408e9372013-01-03 17:55:52 +09001607int f2fs_gc(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001608void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001609
1610/*
1611 * recovery.c
1612 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001613int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001614bool space_for_roll_forward(struct f2fs_sb_info *);
1615
1616/*
1617 * debug.c
1618 */
1619#ifdef CONFIG_F2FS_STAT_FS
1620struct f2fs_stat_info {
1621 struct list_head stat_list;
1622 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001623 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1624 int main_area_segs, main_area_sections, main_area_zones;
Chao Yu4bf6fd92015-02-05 17:58:28 +08001625 int hit_ext, total_ext, ext_tree, ext_node;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001626 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001627 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001628 int total_count, utilization;
Jaegeuk Kimd24bdcb2015-01-30 16:43:11 -08001629 int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001630 unsigned int valid_count, valid_node_count, valid_inode_count;
1631 unsigned int bimodal, avg_vblocks;
1632 int util_free, util_valid, util_invalid;
1633 int rsvd_segs, overp_segs;
1634 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001635 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001636 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1637 int tot_blks, data_blks, node_blks;
1638 int curseg[NR_CURSEG_TYPE];
1639 int cursec[NR_CURSEG_TYPE];
1640 int curzone[NR_CURSEG_TYPE];
1641
1642 unsigned int segment_count[2];
1643 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001644 unsigned int inplace_count;
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -08001645 unsigned base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001646};
1647
Gu Zheng963d4f72013-07-12 14:47:11 +08001648static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1649{
Chris Fries6c311ec2014-01-17 14:44:39 -06001650 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001651}
1652
Changman Lee942e0be2014-02-13 15:12:29 +09001653#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001654#define stat_inc_call_count(si) ((si)->call_count++)
1655#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1656#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1657#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1658#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1659#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001660#define stat_inc_inline_inode(inode) \
1661 do { \
1662 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001663 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001664 } while (0)
1665#define stat_dec_inline_inode(inode) \
1666 do { \
1667 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001668 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001669 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001670#define stat_inc_inline_dir(inode) \
1671 do { \
1672 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001673 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001674 } while (0)
1675#define stat_dec_inline_dir(inode) \
1676 do { \
1677 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001678 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001679 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001680#define stat_inc_seg_type(sbi, curseg) \
1681 ((sbi)->segment_count[(curseg)->alloc_type]++)
1682#define stat_inc_block_count(sbi, curseg) \
1683 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001684#define stat_inc_inplace_blocks(sbi) \
1685 (atomic_inc(&(sbi)->inplace_count))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001686#define stat_inc_seg_count(sbi, type) \
1687 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001688 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001689 (si)->tot_segs++; \
1690 if (type == SUM_TYPE_DATA) \
1691 si->data_segs++; \
1692 else \
1693 si->node_segs++; \
1694 } while (0)
1695
1696#define stat_inc_tot_blk_count(si, blks) \
1697 (si->tot_blks += (blks))
1698
1699#define stat_inc_data_blk_count(sbi, blks) \
1700 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001701 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001702 stat_inc_tot_blk_count(si, blks); \
1703 si->data_blks += (blks); \
1704 } while (0)
1705
1706#define stat_inc_node_blk_count(sbi, blks) \
1707 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001708 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001709 stat_inc_tot_blk_count(si, blks); \
1710 si->node_blks += (blks); \
1711 } while (0)
1712
1713int f2fs_build_stats(struct f2fs_sb_info *);
1714void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001715void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001716void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001717#else
Changman Lee942e0be2014-02-13 15:12:29 +09001718#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001719#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001720#define stat_inc_bggc_count(si)
1721#define stat_inc_dirty_dir(sbi)
1722#define stat_dec_dirty_dir(sbi)
1723#define stat_inc_total_hit(sb)
1724#define stat_inc_read_hit(sb)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001725#define stat_inc_inline_inode(inode)
1726#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001727#define stat_inc_inline_dir(inode)
1728#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001729#define stat_inc_seg_type(sbi, curseg)
1730#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09001731#define stat_inc_inplace_blocks(sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001732#define stat_inc_seg_count(si, type)
1733#define stat_inc_tot_blk_count(si, blks)
1734#define stat_inc_data_blk_count(si, blks)
1735#define stat_inc_node_blk_count(sbi, blks)
1736
1737static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1738static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001739static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09001740static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001741#endif
1742
1743extern const struct file_operations f2fs_dir_operations;
1744extern const struct file_operations f2fs_file_operations;
1745extern const struct inode_operations f2fs_file_inode_operations;
1746extern const struct address_space_operations f2fs_dblock_aops;
1747extern const struct address_space_operations f2fs_node_aops;
1748extern const struct address_space_operations f2fs_meta_aops;
1749extern const struct inode_operations f2fs_dir_inode_operations;
1750extern const struct inode_operations f2fs_symlink_inode_operations;
1751extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08001752extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08001753
Huajun Lie18c65b2013-11-10 23:13:19 +08001754/*
1755 * inline.c
1756 */
Huajun Lie18c65b2013-11-10 23:13:19 +08001757bool f2fs_may_inline(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001758void read_inline_data(struct page *, struct page *);
Huajun Lie18c65b2013-11-10 23:13:19 +08001759int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001760int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1761int f2fs_convert_inline_inode(struct inode *);
1762int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07001763bool recover_inline_data(struct inode *, struct page *);
Chao Yu201a05b2014-09-24 18:17:53 +08001764struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *,
1765 struct page **);
1766struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1767int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
1768int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *);
1769void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1770 struct inode *, struct inode *);
1771bool f2fs_empty_inline_dir(struct inode *);
1772int f2fs_read_inline_dir(struct file *, struct dir_context *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001773#endif