blob: a214cce9fe70b4c94a2a6d8369501d050619540c [file] [log] [blame]
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
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090053
54#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
55#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
56#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
57
58#define ver_after(a, b) (typecheck(unsigned long long, a) && \
59 typecheck(unsigned long long, b) && \
60 ((long long)((a) - (b)) > 0))
61
Jaegeuk Kima9841c42013-05-24 12:41:04 +090062typedef u32 block_t; /*
63 * should not change u32, since it is the on-disk block
64 * address format, __le32.
65 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090066typedef u32 nid_t;
67
68struct f2fs_mount_info {
69 unsigned int opt;
70};
71
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090072#define CRCPOLY_LE 0xedb88320
73
74static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090075{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090076 unsigned char *p = (unsigned char *)buf;
77 __u32 crc = F2FS_SUPER_MAGIC;
78 int i;
79
80 while (len--) {
81 crc ^= *p++;
82 for (i = 0; i < 8; i++)
83 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
84 }
85 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090086}
87
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090088static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090089{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090090 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090091}
92
93/*
94 * For checkpoint manager
95 */
96enum {
97 NAT_BITMAP,
98 SIT_BITMAP
99};
100
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700101enum {
102 CP_UMOUNT,
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800103 CP_FASTBOOT,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700104 CP_SYNC,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700105 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700106};
107
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800108#define DEF_BATCHED_TRIM_SECTIONS 32
109#define BATCHED_TRIM_SEGMENTS(sbi) \
110 (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec)
111
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700112struct cp_control {
113 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700114 __u64 trim_start;
115 __u64 trim_end;
116 __u64 trim_minlen;
117 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700118};
119
Chao Yu662befd2014-02-07 16:11:53 +0800120/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800121 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800122 */
123enum {
124 META_CP,
125 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800126 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700127 META_SSA,
128 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800129};
130
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700131/* for the list of ino */
132enum {
133 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700134 APPEND_INO, /* for append ino list */
135 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700136 MAX_INO_ENTRY, /* max. list */
137};
138
139struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900140 struct list_head list; /* list head */
141 nid_t ino; /* inode number */
142};
143
Chao Yu06292072014-12-29 15:56:18 +0800144/*
145 * for the list of directory inodes or gc inodes.
146 * NOTE: there are two slab users for this structure, if we add/modify/delete
147 * fields in structure for one of slab users, it may affect fields or size of
148 * other one, in this condition, it's better to split both of slab and related
149 * data structure.
150 */
151struct inode_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900152 struct list_head list; /* list head */
153 struct inode *inode; /* vfs inode pointer */
154};
155
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900156/* for the list of blockaddresses to be discarded */
157struct discard_entry {
158 struct list_head list; /* list head */
159 block_t blkaddr; /* block address to be discarded */
160 int len; /* # of consecutive blocks of the discard */
161};
162
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900163/* for the list of fsync inodes, used only during recovery */
164struct fsync_inode_entry {
165 struct list_head list; /* list head */
166 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700167 block_t blkaddr; /* block address locating the last fsync */
168 block_t last_dentry; /* block address locating the last dentry */
169 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900170};
171
172#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
173#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
174
175#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
176#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
177#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
178#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
179
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700180#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
181#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
182
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900183static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
184{
185 int before = nats_in_cursum(rs);
186 rs->n_nats = cpu_to_le16(before + i);
187 return before;
188}
189
190static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
191{
192 int before = sits_in_cursum(rs);
193 rs->n_sits = cpu_to_le16(before + i);
194 return before;
195}
196
Chao Yu184a5cd2014-09-04 18:13:01 +0800197static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
198 int type)
199{
200 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700201 return size <= MAX_NAT_JENTRIES(sum);
202 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800203}
204
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900205/*
Namjae Jeone9750822013-02-04 23:41:41 +0900206 * ioctl commands
207 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700208#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
209#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
Chao Yud49f3e82015-01-23 20:36:04 +0800210#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700211
212#define F2FS_IOCTL_MAGIC 0xf5
213#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
214#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700215#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Jaegeuk Kim1e843712014-12-09 06:08:59 -0800216#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
217#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
Namjae Jeone9750822013-02-04 23:41:41 +0900218
219#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
220/*
221 * ioctl commands in 32 bit emulation
222 */
223#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
224#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
225#endif
226
227/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900228 * For INODE and NODE manager
229 */
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -0700230/* for directory operations */
231struct f2fs_dentry_ptr {
232 const void *bitmap;
233 struct f2fs_dir_entry *dentry;
234 __u8 (*filename)[F2FS_SLOT_LEN];
235 int max;
236};
237
238static inline void make_dentry_ptr(struct f2fs_dentry_ptr *d,
239 void *src, int type)
240{
241 if (type == 1) {
242 struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src;
243 d->max = NR_DENTRY_IN_BLOCK;
244 d->bitmap = &t->dentry_bitmap;
245 d->dentry = t->dentry;
246 d->filename = t->filename;
247 } else {
248 struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src;
249 d->max = NR_INLINE_DENTRY;
250 d->bitmap = &t->dentry_bitmap;
251 d->dentry = t->dentry;
252 d->filename = t->filename;
253 }
254}
255
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900256/*
257 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
258 * as its node offset to distinguish from index node blocks.
259 * But some bits are used to mark the node block.
260 */
261#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
262 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900263enum {
264 ALLOC_NODE, /* allocate a new node page if needed */
265 LOOKUP_NODE, /* look up a node without readahead */
266 LOOKUP_NODE_RA, /*
267 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800268 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900269 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900270};
271
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900272#define F2FS_LINK_MAX 32000 /* maximum link count per file */
273
Chao Yu817202d92014-04-28 17:59:43 +0800274#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
275
Chao Yu13054c52015-02-05 17:52:58 +0800276/* vector size for gang look-up from extent cache that consists of radix tree */
277#define EXT_TREE_VEC_SIZE 64
278
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900279/* for in-memory extent cache entry */
Chao Yu13054c52015-02-05 17:52:58 +0800280#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
281
282/* number of extent info in extent cache we try to shrink */
283#define EXTENT_CACHE_SHRINK_NUMBER 128
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900284
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900285struct extent_info {
Chao Yu13054c52015-02-05 17:52:58 +0800286 unsigned int fofs; /* start offset in a file */
287 u32 blk; /* start block address of the extent */
288 unsigned int len; /* length of the extent */
289};
290
291struct extent_node {
292 struct rb_node rb_node; /* rb node located in rb-tree */
293 struct list_head list; /* node in global extent list of sbi */
294 struct extent_info ei; /* extent info */
295};
296
297struct extent_tree {
298 nid_t ino; /* inode number */
299 struct rb_root root; /* root of extent info rb-tree */
300 rwlock_t lock; /* protect extent info rb-tree */
301 atomic_t refcount; /* reference count of rb-tree */
302 unsigned int count; /* # of extent node in rb-tree*/
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900303};
304
305/*
306 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
307 */
308#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900309#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900310
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900311#define DEF_DIR_LEVEL 0
312
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900313struct f2fs_inode_info {
314 struct inode vfs_inode; /* serve a vfs inode */
315 unsigned long i_flags; /* keep an inode flags for ioctl */
316 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900317 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900318 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900319 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900320 umode_t i_acl_mode; /* keep file acl mode temporarily */
321
322 /* Use below internally in f2fs*/
323 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900324 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700325 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900326 f2fs_hash_t chash; /* hash value of given file name */
327 unsigned int clevel; /* maximum level of given file name */
328 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900329 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900330 struct extent_info ext; /* in-memory extent cache entry */
Chao Yu0c872e22015-02-05 17:46:29 +0800331 rwlock_t ext_lock; /* rwlock for single extent cache */
Chao Yu06292072014-12-29 15:56:18 +0800332 struct inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700333
Jaegeuk Kim34ba94b2014-10-09 13:19:53 -0700334 struct radix_tree_root inmem_root; /* radix tree for inmem pages */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700335 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
336 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900337};
338
339static inline void get_extent_info(struct extent_info *ext,
340 struct f2fs_extent i_ext)
341{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900342 ext->fofs = le32_to_cpu(i_ext.fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800343 ext->blk = le32_to_cpu(i_ext.blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900344 ext->len = le32_to_cpu(i_ext.len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900345}
346
347static inline void set_raw_extent(struct extent_info *ext,
348 struct f2fs_extent *i_ext)
349{
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900350 i_ext->fofs = cpu_to_le32(ext->fofs);
Chao Yu4d0b0bd2015-02-05 17:47:25 +0800351 i_ext->blk = cpu_to_le32(ext->blk);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900352 i_ext->len = cpu_to_le32(ext->len);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900353}
354
355struct f2fs_nm_info {
356 block_t nat_blkaddr; /* base disk address of NAT */
357 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900358 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900359 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900360 unsigned int ram_thresh; /* control the memory footprint */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900361
362 /* NAT cache management */
363 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700364 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim8b26ef92014-12-03 21:15:10 -0800365 struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900366 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700367 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800368 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900369
370 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900371 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900372 struct list_head free_nid_list; /* a list for free nids */
373 spinlock_t free_nid_list_lock; /* protect free nid list */
374 unsigned int fcnt; /* the number of free node id */
375 struct mutex build_lock; /* lock for build free nids */
376
377 /* for checkpoint */
378 char *nat_bitmap; /* NAT bitmap pointer */
379 int bitmap_size; /* bitmap size */
380};
381
382/*
383 * this structure is used as one of function parameters.
384 * all the information are dedicated to a given direct node block determined
385 * by the data offset in a file.
386 */
387struct dnode_of_data {
388 struct inode *inode; /* vfs inode pointer */
389 struct page *inode_page; /* its inode page, NULL is possible */
390 struct page *node_page; /* cached direct node page */
391 nid_t nid; /* node id of the direct node block */
392 unsigned int ofs_in_node; /* data offset in the node page */
393 bool inode_page_locked; /* inode page is locked or not */
394 block_t data_blkaddr; /* block address of the node block */
395};
396
397static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
398 struct page *ipage, struct page *npage, nid_t nid)
399{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900400 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900401 dn->inode = inode;
402 dn->inode_page = ipage;
403 dn->node_page = npage;
404 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900405}
406
407/*
408 * For SIT manager
409 *
410 * By default, there are 6 active log areas across the whole main area.
411 * When considering hot and cold data separation to reduce cleaning overhead,
412 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
413 * respectively.
414 * In the current design, you should not change the numbers intentionally.
415 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
416 * logs individually according to the underlying devices. (default: 6)
417 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
418 * data and 8 for node logs.
419 */
420#define NR_CURSEG_DATA_TYPE (3)
421#define NR_CURSEG_NODE_TYPE (3)
422#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
423
424enum {
425 CURSEG_HOT_DATA = 0, /* directory entry blocks */
426 CURSEG_WARM_DATA, /* data blocks */
427 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
428 CURSEG_HOT_NODE, /* direct node blocks of directory files */
429 CURSEG_WARM_NODE, /* direct node blocks of normal files */
430 CURSEG_COLD_NODE, /* indirect node blocks */
Jaegeuk Kim38aa0882015-01-05 16:02:20 -0800431 NO_CHECK_TYPE,
432 CURSEG_DIRECT_IO, /* to use for the direct IO path */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900433};
434
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900435struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900436 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800437 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900438 int ret;
439};
440
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800441struct flush_cmd_control {
442 struct task_struct *f2fs_issue_flush; /* flush thread */
443 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800444 struct llist_head issue_list; /* list for command issue */
445 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800446};
447
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900448struct f2fs_sm_info {
449 struct sit_info *sit_info; /* whole segment information */
450 struct free_segmap_info *free_info; /* free segment information */
451 struct dirty_seglist_info *dirty_info; /* dirty segment information */
452 struct curseg_info *curseg_array; /* active segment information */
453
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900454 block_t seg0_blkaddr; /* block address of 0'th segment */
455 block_t main_blkaddr; /* start block address of main area */
456 block_t ssa_blkaddr; /* start block address of SSA area */
457
458 unsigned int segment_count; /* total # of segments */
459 unsigned int main_segments; /* # of segments in main area */
460 unsigned int reserved_segments; /* # of reserved segments */
461 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900462
463 /* a threshold to reclaim prefree segments */
464 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900465
466 /* for small discard management */
467 struct list_head discard_list; /* 4KB discard list */
468 int nr_discards; /* # of discards in the list */
469 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900470
Jaegeuk Kimbba681c2015-01-26 17:41:23 -0800471 /* for batched trimming */
472 unsigned int trim_sections; /* # of sections to trim */
473
Chao Yu184a5cd2014-09-04 18:13:01 +0800474 struct list_head sit_entry_set; /* sit entry set list */
475
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900476 unsigned int ipu_policy; /* in-place-update policy */
477 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700478 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900479
480 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800481 struct flush_cmd_control *cmd_control_info;
482
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900483};
484
485/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900486 * For superblock
487 */
488/*
489 * COUNT_TYPE for monitoring
490 *
491 * f2fs monitors the number of several block types such as on-writeback,
492 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
493 */
494enum count_type {
495 F2FS_WRITEBACK,
496 F2FS_DIRTY_DENTS,
497 F2FS_DIRTY_NODES,
498 F2FS_DIRTY_META,
Jaegeuk Kim8dcf2ff72014-12-05 17:18:15 -0800499 F2FS_INMEM_PAGES,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900500 NR_COUNT_TYPE,
501};
502
503/*
arter97e1c42042014-08-06 23:22:50 +0900504 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900505 * The available types are:
506 * DATA User data pages. It operates as async mode.
507 * NODE Node pages. It operates as async mode.
508 * META FS metadata pages such as SIT, NAT, CP.
509 * NR_PAGE_TYPE The number of page types.
510 * META_FLUSH Make sure the previous pages are written
511 * with waiting the bio's completion
512 * ... Only can be used with META.
513 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900514#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900515enum page_type {
516 DATA,
517 NODE,
518 META,
519 NR_PAGE_TYPE,
520 META_FLUSH,
521};
522
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900523struct f2fs_io_info {
Gu Zheng7e8f2302013-12-20 18:17:49 +0800524 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
525 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -0800526 block_t blk_addr; /* block address to be written */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900527};
528
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900529#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900530struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900531 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900532 struct bio *bio; /* bios to merge */
533 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900534 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800535 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900536};
537
Chao Yu67298802014-11-18 11:18:36 +0800538/* for inner inode cache management */
539struct inode_management {
540 struct radix_tree_root ino_root; /* ino entry array */
541 spinlock_t ino_lock; /* for ino entry lock */
542 struct list_head ino_list; /* inode list head */
543 unsigned long ino_num; /* number of entries */
544};
545
Chao Yucaf00472015-01-28 17:48:42 +0800546/* For s_flag in struct f2fs_sb_info */
547enum {
548 SBI_IS_DIRTY, /* dirty flag for checkpoint */
549 SBI_IS_CLOSE, /* specify unmounting */
550 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
551 SBI_POR_DOING, /* recovery is doing or not */
552};
553
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900554struct f2fs_sb_info {
555 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900556 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900557 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
558 struct f2fs_super_block *raw_super; /* raw super block pointer */
Chao Yucaf00472015-01-28 17:48:42 +0800559 int s_flag; /* flags for sbi */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900560
561 /* for node-related operations */
562 struct f2fs_nm_info *nm_info; /* node manager */
563 struct inode *node_inode; /* cache node blocks */
564
565 /* for segment-related operations */
566 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900567
568 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800569 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900570 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900571
572 /* for checkpoint */
573 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
574 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900575 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800576 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800577 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900578 struct mutex writepages; /* mutex for writepages() */
Changman Leefb51b5e2013-11-07 12:48:25 +0900579 wait_queue_head_t cp_wait;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900580
Chao Yu67298802014-11-18 11:18:36 +0800581 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700582
583 /* for orphan inode, use 0'th array */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800584 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900585
586 /* for directory inode management */
587 struct list_head dir_inode_list; /* dir inode list */
588 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900589
Chao Yu13054c52015-02-05 17:52:58 +0800590 /* for extent tree cache */
591 struct radix_tree_root extent_tree_root;/* cache extent cache entries */
592 struct rw_semaphore extent_tree_lock; /* locking extent radix tree */
593 struct list_head extent_list; /* lru list for shrinker */
594 spinlock_t extent_lock; /* locking extent lru list */
595 int total_ext_tree; /* extent tree count */
596 atomic_t total_ext_node; /* extent info count */
597
arter97e1c42042014-08-06 23:22:50 +0900598 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900599 unsigned int log_sectors_per_block; /* log2 sectors per block */
600 unsigned int log_blocksize; /* log2 block size */
601 unsigned int blocksize; /* block size */
602 unsigned int root_ino_num; /* root inode number*/
603 unsigned int node_ino_num; /* node inode number*/
604 unsigned int meta_ino_num; /* meta inode number*/
605 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
606 unsigned int blocks_per_seg; /* blocks per segment */
607 unsigned int segs_per_sec; /* segments per section */
608 unsigned int secs_per_zone; /* sections per zone */
609 unsigned int total_sections; /* total section count */
610 unsigned int total_node_count; /* total node block count */
611 unsigned int total_valid_node_count; /* valid node block count */
612 unsigned int total_valid_inode_count; /* valid inode count */
613 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900614 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900615
616 block_t user_block_count; /* # of user blocks */
617 block_t total_valid_block_count; /* # of valid blocks */
618 block_t alloc_valid_block_count; /* # of allocated blocks */
619 block_t last_valid_block_count; /* for recovery */
620 u32 s_next_generation; /* for NFS support */
621 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
622
623 struct f2fs_mount_info mount_opt; /* mount options */
624
625 /* for cleaning operations */
626 struct mutex gc_mutex; /* mutex for GC */
627 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900628 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900629
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900630 /* maximum # of trials to find a victim segment for SSR and GC */
631 unsigned int max_victim_search;
632
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900633 /*
634 * for stat information.
635 * one is for the LFS mode, and the other is for the SSR mode.
636 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900637#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900638 struct f2fs_stat_info *stat_info; /* FS status information */
639 unsigned int segment_count[2]; /* # of allocated segments */
640 unsigned int block_count[2]; /* # of allocated blocks */
Changman Leeb9a2c252014-12-24 02:16:54 +0900641 atomic_t inplace_count; /* # of inplace update */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900642 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
Chao Yu03e14d52014-12-08 19:08:20 +0800643 atomic_t inline_inode; /* # of inline_data inodes */
644 atomic_t inline_dir; /* # of inline_dentry inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900645 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900646 unsigned int n_dirty_dirs; /* # of dir inodes */
647#endif
648 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900649 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900650
651 /* For sysfs suppport */
652 struct kobject s_kobj;
653 struct completion s_kobj_unregister;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900654};
655
656/*
657 * Inline functions
658 */
659static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
660{
661 return container_of(inode, struct f2fs_inode_info, vfs_inode);
662}
663
664static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
665{
666 return sb->s_fs_info;
667}
668
Jaegeuk Kim40813632014-09-02 15:31:18 -0700669static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
670{
671 return F2FS_SB(inode->i_sb);
672}
673
674static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
675{
676 return F2FS_I_SB(mapping->host);
677}
678
679static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
680{
681 return F2FS_M_SB(page->mapping);
682}
683
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900684static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
685{
686 return (struct f2fs_super_block *)(sbi->raw_super);
687}
688
689static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
690{
691 return (struct f2fs_checkpoint *)(sbi->ckpt);
692}
693
Gu Zheng45590712013-07-15 17:57:38 +0800694static inline struct f2fs_node *F2FS_NODE(struct page *page)
695{
696 return (struct f2fs_node *)page_address(page);
697}
698
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900699static inline struct f2fs_inode *F2FS_INODE(struct page *page)
700{
701 return &((struct f2fs_node *)page_address(page))->i;
702}
703
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900704static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
705{
706 return (struct f2fs_nm_info *)(sbi->nm_info);
707}
708
709static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
710{
711 return (struct f2fs_sm_info *)(sbi->sm_info);
712}
713
714static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
715{
716 return (struct sit_info *)(SM_I(sbi)->sit_info);
717}
718
719static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
720{
721 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
722}
723
724static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
725{
726 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
727}
728
Gu Zheng9df27d92014-01-20 18:37:04 +0800729static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
730{
731 return sbi->meta_inode->i_mapping;
732}
733
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900734static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
735{
736 return sbi->node_inode->i_mapping;
737}
738
Chao Yucaf00472015-01-28 17:48:42 +0800739static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900740{
Chao Yucaf00472015-01-28 17:48:42 +0800741 return sbi->s_flag & (0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900742}
743
Chao Yucaf00472015-01-28 17:48:42 +0800744static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900745{
Chao Yucaf00472015-01-28 17:48:42 +0800746 sbi->s_flag |= (0x01 << type);
747}
748
749static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
750{
751 sbi->s_flag &= ~(0x01 << type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900752}
753
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900754static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
755{
756 return le64_to_cpu(cp->checkpoint_ver);
757}
758
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900759static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
760{
761 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
762 return ckpt_flags & f;
763}
764
765static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
766{
767 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
768 ckpt_flags |= f;
769 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
770}
771
772static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
773{
774 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
775 ckpt_flags &= (~f);
776 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
777}
778
Gu Zhenge4795562013-09-27 18:08:30 +0800779static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900780{
Gu Zhenge4795562013-09-27 18:08:30 +0800781 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900782}
783
Gu Zhenge4795562013-09-27 18:08:30 +0800784static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900785{
Gu Zhenge4795562013-09-27 18:08:30 +0800786 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900787}
788
Gu Zhenge4795562013-09-27 18:08:30 +0800789static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900790{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900791 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900792}
793
Gu Zhenge4795562013-09-27 18:08:30 +0800794static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900795{
Gu Zhenge4795562013-09-27 18:08:30 +0800796 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900797}
798
Jaegeuk Kim119ee912015-01-29 11:45:33 -0800799static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
800{
801 int reason = CP_SYNC;
802
803 if (test_opt(sbi, FASTBOOT))
804 reason = CP_FASTBOOT;
805 if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
806 reason = CP_UMOUNT;
807 return reason;
808}
809
810static inline bool __remain_node_summaries(int reason)
811{
812 return (reason == CP_UMOUNT || reason == CP_FASTBOOT);
813}
814
815static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
816{
817 return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) ||
818 is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG));
819}
820
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900821/*
822 * Check whether the given nid is within node id range.
823 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900824static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900825{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800826 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
827 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800828 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +0900829 return -EINVAL;
830 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900831}
832
833#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
834
835/*
836 * Check whether the inode has blocks or not
837 */
838static inline int F2FS_HAS_BLOCKS(struct inode *inode)
839{
840 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -0600841 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900842 else
Chris Fries6c311ec2014-01-17 14:44:39 -0600843 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900844}
845
Chao Yu4bc8e9b2014-03-17 16:35:06 +0800846static inline bool f2fs_has_xattr_block(unsigned int ofs)
847{
848 return ofs == XATTR_NODE_OFFSET;
849}
850
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900851static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
852 struct inode *inode, blkcnt_t count)
853{
854 block_t valid_block_count;
855
856 spin_lock(&sbi->stat_lock);
857 valid_block_count =
858 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +0800859 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900860 spin_unlock(&sbi->stat_lock);
861 return false;
862 }
863 inode->i_blocks += count;
864 sbi->total_valid_block_count = valid_block_count;
865 sbi->alloc_valid_block_count += (block_t)count;
866 spin_unlock(&sbi->stat_lock);
867 return true;
868}
869
Gu Zhengda19b0d2013-11-19 18:03:27 +0800870static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900871 struct inode *inode,
872 blkcnt_t count)
873{
874 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700875 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
876 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900877 inode->i_blocks -= count;
878 sbi->total_valid_block_count -= (block_t)count;
879 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900880}
881
882static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
883{
884 atomic_inc(&sbi->nr_pages[count_type]);
Chao Yucaf00472015-01-28 17:48:42 +0800885 set_sbi_flag(sbi, SBI_IS_DIRTY);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900886}
887
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700888static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900889{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700890 atomic_inc(&F2FS_I(inode)->dirty_pages);
891 if (S_ISDIR(inode->i_mode))
892 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900893}
894
895static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
896{
897 atomic_dec(&sbi->nr_pages[count_type]);
898}
899
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700900static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900901{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700902 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +0900903 return;
904
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700905 atomic_dec(&F2FS_I(inode)->dirty_pages);
906
907 if (S_ISDIR(inode->i_mode))
908 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900909}
910
911static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
912{
913 return atomic_read(&sbi->nr_pages[count_type]);
914}
915
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700916static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900917{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700918 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900919}
920
Namjae Jeon5ac206c2013-02-02 23:52:59 +0900921static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
922{
923 unsigned int pages_per_sec = sbi->segs_per_sec *
924 (1 << sbi->log_blocks_per_seg);
925 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
926 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
927}
928
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900929static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
930{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +0900931 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900932}
933
934static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
935{
936 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
937
938 /* return NAT or SIT bitmap */
939 if (flag == NAT_BITMAP)
940 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
941 else if (flag == SIT_BITMAP)
942 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
943
944 return 0;
945}
946
947static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
948{
949 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +0900950 int offset;
951
952 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
953 if (flag == NAT_BITMAP)
954 return &ckpt->sit_nat_version_bitmap;
955 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -0700956 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +0900957 } else {
958 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900959 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +0900960 return &ckpt->sit_nat_version_bitmap + offset;
961 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900962}
963
964static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
965{
966 block_t start_addr;
967 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900968 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900969
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900970 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900971
972 /*
973 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +0900974 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900975 */
976 if (!(ckpt_version & 1))
977 start_addr += sbi->blocks_per_seg;
978
979 return start_addr;
980}
981
982static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
983{
984 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
985}
986
987static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +0800988 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900989{
990 block_t valid_block_count;
991 unsigned int valid_node_count;
992
993 spin_lock(&sbi->stat_lock);
994
Gu Zhengef86d702013-11-19 18:03:38 +0800995 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +0800996 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900997 spin_unlock(&sbi->stat_lock);
998 return false;
999 }
1000
Gu Zhengef86d702013-11-19 18:03:38 +08001001 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +08001002 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001003 spin_unlock(&sbi->stat_lock);
1004 return false;
1005 }
1006
1007 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +08001008 inode->i_blocks++;
1009
1010 sbi->alloc_valid_block_count++;
1011 sbi->total_valid_node_count++;
1012 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001013 spin_unlock(&sbi->stat_lock);
1014
1015 return true;
1016}
1017
1018static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +08001019 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001020{
1021 spin_lock(&sbi->stat_lock);
1022
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001023 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
1024 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1025 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001026
Gu Zhengef86d702013-11-19 18:03:38 +08001027 inode->i_blocks--;
1028 sbi->total_valid_node_count--;
1029 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001030
1031 spin_unlock(&sbi->stat_lock);
1032}
1033
1034static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
1035{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001036 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001037}
1038
1039static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
1040{
1041 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001042 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001043 sbi->total_valid_inode_count++;
1044 spin_unlock(&sbi->stat_lock);
1045}
1046
Jaegeuk Kim0e802202013-11-26 16:36:20 +09001047static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001048{
1049 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001050 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001051 sbi->total_valid_inode_count--;
1052 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001053}
1054
1055static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
1056{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +09001057 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001058}
1059
1060static inline void f2fs_put_page(struct page *page, int unlock)
1061{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +09001062 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001063 return;
1064
1065 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -07001066 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001067 unlock_page(page);
1068 }
1069 page_cache_release(page);
1070}
1071
1072static inline void f2fs_put_dnode(struct dnode_of_data *dn)
1073{
1074 if (dn->node_page)
1075 f2fs_put_page(dn->node_page, 1);
1076 if (dn->inode_page && dn->node_page != dn->inode_page)
1077 f2fs_put_page(dn->inode_page, 0);
1078 dn->node_page = NULL;
1079 dn->inode_page = NULL;
1080}
1081
1082static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +08001083 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001084{
Gu Zhenge8512d22014-03-07 18:43:28 +08001085 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001086}
1087
Gu Zheng7bd59382013-10-22 14:52:26 +08001088static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
1089 gfp_t flags)
1090{
1091 void *entry;
1092retry:
1093 entry = kmem_cache_alloc(cachep, flags);
1094 if (!entry) {
1095 cond_resched();
1096 goto retry;
1097 }
1098
1099 return entry;
1100}
1101
Jaegeuk Kim9be32d72014-12-05 10:39:49 -08001102static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
1103 unsigned long index, void *item)
1104{
1105 while (radix_tree_insert(root, index, item))
1106 cond_resched();
1107}
1108
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001109#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
1110
1111static inline bool IS_INODE(struct page *page)
1112{
Gu Zheng45590712013-07-15 17:57:38 +08001113 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001114 return RAW_IS_INODE(p);
1115}
1116
1117static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1118{
1119 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1120}
1121
1122static inline block_t datablock_addr(struct page *node_page,
1123 unsigned int offset)
1124{
1125 struct f2fs_node *raw_node;
1126 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001127 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001128 addr_array = blkaddr_in_node(raw_node);
1129 return le32_to_cpu(addr_array[offset]);
1130}
1131
1132static inline int f2fs_test_bit(unsigned int nr, char *addr)
1133{
1134 int mask;
1135
1136 addr += (nr >> 3);
1137 mask = 1 << (7 - (nr & 0x07));
1138 return mask & *addr;
1139}
1140
Gu Zheng52aca072014-10-20 17:45:51 +08001141static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001142{
1143 int mask;
1144 int ret;
1145
1146 addr += (nr >> 3);
1147 mask = 1 << (7 - (nr & 0x07));
1148 ret = mask & *addr;
1149 *addr |= mask;
1150 return ret;
1151}
1152
Gu Zheng52aca072014-10-20 17:45:51 +08001153static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001154{
1155 int mask;
1156 int ret;
1157
1158 addr += (nr >> 3);
1159 mask = 1 << (7 - (nr & 0x07));
1160 ret = mask & *addr;
1161 *addr &= ~mask;
1162 return ret;
1163}
1164
Gu Zhengc6ac4c02014-10-20 17:45:50 +08001165static inline void f2fs_change_bit(unsigned int nr, char *addr)
1166{
1167 int mask;
1168
1169 addr += (nr >> 3);
1170 mask = 1 << (7 - (nr & 0x07));
1171 *addr ^= mask;
1172}
1173
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001174/* used for f2fs_inode_info->flags */
1175enum {
1176 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001177 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001178 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001179 FI_INC_LINK, /* need to increment i_nlink */
1180 FI_ACL_MODE, /* indicate acl mode */
1181 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001182 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001183 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001184 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001185 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001186 FI_INLINE_DATA, /* used for inline data*/
Chao Yu34d67de2014-09-24 18:15:19 +08001187 FI_INLINE_DENTRY, /* used for inline dentry */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001188 FI_APPEND_WRITE, /* inode has appended data */
1189 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001190 FI_NEED_IPU, /* used for ipu per file */
1191 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001192 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001193 FI_DROP_CACHE, /* drop dirty page cache */
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001194 FI_DATA_EXIST, /* indicate data exists */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001195};
1196
1197static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1198{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001199 if (!test_bit(flag, &fi->flags))
1200 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001201}
1202
1203static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1204{
1205 return test_bit(flag, &fi->flags);
1206}
1207
1208static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1209{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001210 if (test_bit(flag, &fi->flags))
1211 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001212}
1213
1214static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1215{
1216 fi->i_acl_mode = mode;
1217 set_inode_flag(fi, FI_ACL_MODE);
1218}
1219
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001220static inline void get_inline_info(struct f2fs_inode_info *fi,
1221 struct f2fs_inode *ri)
1222{
1223 if (ri->i_inline & F2FS_INLINE_XATTR)
1224 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001225 if (ri->i_inline & F2FS_INLINE_DATA)
1226 set_inode_flag(fi, FI_INLINE_DATA);
Chao Yu34d67de2014-09-24 18:15:19 +08001227 if (ri->i_inline & F2FS_INLINE_DENTRY)
1228 set_inode_flag(fi, FI_INLINE_DENTRY);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001229 if (ri->i_inline & F2FS_DATA_EXIST)
1230 set_inode_flag(fi, FI_DATA_EXIST);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001231}
1232
1233static inline void set_raw_inline(struct f2fs_inode_info *fi,
1234 struct f2fs_inode *ri)
1235{
1236 ri->i_inline = 0;
1237
1238 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1239 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001240 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1241 ri->i_inline |= F2FS_INLINE_DATA;
Chao Yu34d67de2014-09-24 18:15:19 +08001242 if (is_inode_flag_set(fi, FI_INLINE_DENTRY))
1243 ri->i_inline |= F2FS_INLINE_DENTRY;
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001244 if (is_inode_flag_set(fi, FI_DATA_EXIST))
1245 ri->i_inline |= F2FS_DATA_EXIST;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001246}
1247
Chao Yu987c7c32014-03-12 15:59:03 +08001248static inline int f2fs_has_inline_xattr(struct inode *inode)
1249{
1250 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1251}
1252
Jaegeuk Kimde936532013-08-12 21:08:03 +09001253static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1254{
Chao Yu987c7c32014-03-12 15:59:03 +08001255 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001256 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1257 return DEF_ADDRS_PER_INODE;
1258}
1259
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001260static inline void *inline_xattr_addr(struct page *page)
1261{
Chao Yu695fd1e2014-02-27 19:52:21 +08001262 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001263 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1264 F2FS_INLINE_XATTR_ADDRS]);
1265}
1266
1267static inline int inline_xattr_size(struct inode *inode)
1268{
Chao Yu987c7c32014-03-12 15:59:03 +08001269 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001270 return F2FS_INLINE_XATTR_ADDRS << 2;
1271 else
1272 return 0;
1273}
1274
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001275static inline int f2fs_has_inline_data(struct inode *inode)
1276{
1277 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1278}
1279
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001280static inline void f2fs_clear_inline_inode(struct inode *inode)
1281{
1282 clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA);
1283 clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST);
1284}
1285
1286static inline int f2fs_exist_data(struct inode *inode)
1287{
1288 return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST);
1289}
1290
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001291static inline bool f2fs_is_atomic_file(struct inode *inode)
1292{
1293 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1294}
1295
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001296static inline bool f2fs_is_volatile_file(struct inode *inode)
1297{
1298 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1299}
1300
Jaegeuk Kim1e843712014-12-09 06:08:59 -08001301static inline bool f2fs_is_drop_cache(struct inode *inode)
1302{
1303 return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE);
1304}
1305
Huajun Li1001b342013-11-10 23:13:16 +08001306static inline void *inline_data_addr(struct page *page)
1307{
Chao Yu695fd1e2014-02-27 19:52:21 +08001308 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001309 return (void *)&(ri->i_addr[1]);
1310}
1311
Chao Yu34d67de2014-09-24 18:15:19 +08001312static inline int f2fs_has_inline_dentry(struct inode *inode)
1313{
1314 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY);
1315}
1316
Jaegeuk Kim9486ba4422014-11-21 16:36:28 -08001317static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
1318{
1319 if (!f2fs_has_inline_dentry(dir))
1320 kunmap(page);
1321}
1322
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001323static inline int f2fs_readonly(struct super_block *sb)
1324{
1325 return sb->s_flags & MS_RDONLY;
1326}
1327
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001328static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1329{
1330 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1331}
1332
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001333static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1334{
1335 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1336 sbi->sb->s_flags |= MS_RDONLY;
1337}
1338
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001339#define get_inode_mode(i) \
1340 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1341 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1342
Chao Yu267378d2014-04-23 14:10:24 +08001343/* get offset of first page in next direct node */
1344#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1345 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1346 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1347 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1348
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001349/*
1350 * file.c
1351 */
1352int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1353void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001354int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001355void f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001356int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001357int f2fs_setattr(struct dentry *, struct iattr *);
1358int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001359int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001360long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001361long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001362
1363/*
1364 * inode.c
1365 */
1366void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001367struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001368int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001369void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001370void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001371int f2fs_write_inode(struct inode *, struct writeback_control *);
1372void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001373void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001374
1375/*
1376 * namei.c
1377 */
1378struct dentry *f2fs_get_parent(struct dentry *child);
1379
1380/*
1381 * dir.c
1382 */
Chao Yudbeacf02014-09-24 18:17:04 +08001383extern unsigned char f2fs_filetype_table[F2FS_FT_MAX];
Chao Yudbeacf02014-09-24 18:17:04 +08001384void set_de_type(struct f2fs_dir_entry *, struct inode *);
Jaegeuk Kim7b3cd7d2014-10-18 22:52:52 -07001385struct f2fs_dir_entry *find_target_dentry(struct qstr *, int *,
1386 struct f2fs_dentry_ptr *);
1387bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *,
1388 unsigned int);
Jaegeuk Kim062a3e72014-10-18 23:06:41 -07001389void do_make_empty_dir(struct inode *, struct inode *,
1390 struct f2fs_dentry_ptr *);
Chao Yudbeacf02014-09-24 18:17:04 +08001391struct page *init_inode_metadata(struct inode *, struct inode *,
Jaegeuk Kimbce8d112014-10-13 19:42:53 -07001392 const struct qstr *, struct page *);
Chao Yudbeacf02014-09-24 18:17:04 +08001393void update_parent_metadata(struct inode *, struct inode *, unsigned int);
Jaegeuk Kima82afa22014-10-13 16:28:13 -07001394int room_for_filename(const void *, int, int);
Chao Yudbeacf02014-09-24 18:17:04 +08001395void f2fs_drop_nlink(struct inode *, struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001396struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1397 struct page **);
1398struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1399ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1400void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1401 struct page *, struct inode *);
Jaegeuk Kim1cd14ca2013-07-18 18:02:31 +09001402int update_dent_inode(struct inode *, const struct qstr *);
Chao Yu3b4d7322015-02-16 16:17:20 +08001403void f2fs_update_dentry(struct inode *, struct f2fs_dentry_ptr *,
1404 const struct qstr *, f2fs_hash_t , unsigned int);
Al Virob7f7a5e2013-01-25 16:15:43 -05001405int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
Chao Yudbeacf02014-09-24 18:17:04 +08001406void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *,
1407 struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001408int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001409int f2fs_make_empty(struct inode *, struct inode *);
1410bool f2fs_empty_dir(struct inode *);
1411
Al Virob7f7a5e2013-01-25 16:15:43 -05001412static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1413{
1414 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1415 inode);
1416}
1417
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001418/*
1419 * super.c
1420 */
1421int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001422extern __printf(3, 4)
1423void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001424
1425/*
1426 * hash.c
1427 */
Gu Zhengeee61602014-06-24 18:21:23 +08001428f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001429
1430/*
1431 * node.c
1432 */
1433struct dnode_of_data;
1434struct node_info;
1435
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001436bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001437bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1438bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1439bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001440void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1441int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1442int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001443int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001444int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Gu Zheng58e674d2013-11-19 18:03:18 +08001445void remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001446struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001447struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001448void ra_node_page(struct f2fs_sb_info *, nid_t);
1449struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1450struct page *get_node_page_ra(struct page *, int);
1451void sync_inode_page(struct dnode_of_data *);
1452int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1453bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1454void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1455void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu70cfed82014-08-02 15:26:04 +08001456void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001457void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001458int recover_inode_page(struct f2fs_sb_info *, struct page *);
1459int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1460 struct f2fs_summary_block *);
1461void flush_nat_entries(struct f2fs_sb_info *);
1462int build_node_manager(struct f2fs_sb_info *);
1463void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001464int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001465void destroy_node_manager_caches(void);
1466
1467/*
1468 * segment.c
1469 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001470void register_inmem_page(struct inode *, struct page *);
1471void commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001472void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001473void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001474int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001475int create_flush_cmd_control(struct f2fs_sb_info *);
1476void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001477void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001478void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001479void clear_prefree_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001480void release_discard_addrs(struct f2fs_sb_info *);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -07001481void discard_next_dnode(struct f2fs_sb_info *, block_t);
Chao Yu3fa06d72014-12-09 14:21:46 +08001482int npages_for_summary_flush(struct f2fs_sb_info *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001483void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001484int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001485struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001486void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kimfb5566d2014-01-08 10:09:51 +09001487void write_node_page(struct f2fs_sb_info *, struct page *,
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -08001488 unsigned int, struct f2fs_io_info *);
1489void write_data_page(struct page *, struct dnode_of_data *,
1490 struct f2fs_io_info *);
1491void rewrite_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001492void recover_data_page(struct f2fs_sb_info *, struct page *,
1493 struct f2fs_summary *, block_t, block_t);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001494void allocate_data_block(struct f2fs_sb_info *, struct page *,
1495 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001496void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001497void write_data_summaries(struct f2fs_sb_info *, block_t);
1498void write_node_summaries(struct f2fs_sb_info *, block_t);
1499int lookup_journal_in_cursum(struct f2fs_summary_block *,
1500 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001501void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001502int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001503void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001504int __init create_segment_manager_caches(void);
1505void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001506
1507/*
1508 * checkpoint.c
1509 */
1510struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1511struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim4c521f492014-09-11 13:49:55 -07001512int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
Chao Yu635aee12014-12-08 15:02:52 +08001513void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001514long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001515void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1516void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001517void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001518bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001519int acquire_orphan_inode(struct f2fs_sb_info *);
1520void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001521void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1522void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8f99a942013-11-28 15:43:43 +08001523void recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001524int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001525void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001526void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001527void remove_dirty_dir_inode(struct inode *);
1528void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001529void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001530void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001531int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001532void destroy_checkpoint_caches(void);
1533
1534/*
1535 * data.c
1536 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001537void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kimcf04e8e2014-12-17 19:33:13 -08001538int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *,
1539 struct f2fs_io_info *);
1540void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *,
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001541 struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001542int reserve_new_block(struct dnode_of_data *);
Huajun Lib6009652013-11-10 23:13:18 +08001543int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Chao Yu7e4dde72015-02-05 17:51:34 +08001544void f2fs_update_extent_cache(struct dnode_of_data *);
Jaegeuk Kimc718379b2013-04-24 13:19:56 +09001545struct page *find_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001546struct page *get_lock_data_page(struct inode *, pgoff_t);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001547struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001548int do_write_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001549int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Chao Yu487261f2015-02-05 17:44:29 +08001550void f2fs_invalidate_page(struct page *, unsigned int, unsigned int);
1551int f2fs_release_page(struct page *, gfp_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001552
1553/*
1554 * gc.c
1555 */
1556int start_gc_thread(struct f2fs_sb_info *);
1557void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001558block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Jaegeuk Kim408e9372013-01-03 17:55:52 +09001559int f2fs_gc(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001560void build_gc_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001561
1562/*
1563 * recovery.c
1564 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001565int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001566bool space_for_roll_forward(struct f2fs_sb_info *);
1567
1568/*
1569 * debug.c
1570 */
1571#ifdef CONFIG_F2FS_STAT_FS
1572struct f2fs_stat_info {
1573 struct list_head stat_list;
1574 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001575 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1576 int main_area_segs, main_area_sections, main_area_zones;
1577 int hit_ext, total_ext;
1578 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
Jaegeuk Kimdd4e4b52015-01-07 11:09:37 -08001579 int nats, dirty_nats, sits, dirty_sits, fnids;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001580 int total_count, utilization;
Jaegeuk Kimd24bdcb2015-01-30 16:43:11 -08001581 int bg_gc, inline_inode, inline_dir, inmem_pages, wb_pages;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001582 unsigned int valid_count, valid_node_count, valid_inode_count;
1583 unsigned int bimodal, avg_vblocks;
1584 int util_free, util_valid, util_invalid;
1585 int rsvd_segs, overp_segs;
1586 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001587 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001588 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1589 int tot_blks, data_blks, node_blks;
1590 int curseg[NR_CURSEG_TYPE];
1591 int cursec[NR_CURSEG_TYPE];
1592 int curzone[NR_CURSEG_TYPE];
1593
1594 unsigned int segment_count[2];
1595 unsigned int block_count[2];
Changman Leeb9a2c252014-12-24 02:16:54 +09001596 unsigned int inplace_count;
Jaegeuk Kim6f0aacb2015-01-10 21:37:36 -08001597 unsigned base_mem, cache_mem, page_mem;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001598};
1599
Gu Zheng963d4f72013-07-12 14:47:11 +08001600static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1601{
Chris Fries6c311ec2014-01-17 14:44:39 -06001602 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001603}
1604
Changman Lee942e0be2014-02-13 15:12:29 +09001605#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001606#define stat_inc_call_count(si) ((si)->call_count++)
1607#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1608#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1609#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1610#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1611#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001612#define stat_inc_inline_inode(inode) \
1613 do { \
1614 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001615 (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001616 } while (0)
1617#define stat_dec_inline_inode(inode) \
1618 do { \
1619 if (f2fs_has_inline_data(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001620 (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001621 } while (0)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001622#define stat_inc_inline_dir(inode) \
1623 do { \
1624 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001625 (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001626 } while (0)
1627#define stat_dec_inline_dir(inode) \
1628 do { \
1629 if (f2fs_has_inline_dentry(inode)) \
Chao Yu03e14d52014-12-08 19:08:20 +08001630 (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001631 } while (0)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001632#define stat_inc_seg_type(sbi, curseg) \
1633 ((sbi)->segment_count[(curseg)->alloc_type]++)
1634#define stat_inc_block_count(sbi, curseg) \
1635 ((sbi)->block_count[(curseg)->alloc_type]++)
Changman Leeb9a2c252014-12-24 02:16:54 +09001636#define stat_inc_inplace_blocks(sbi) \
1637 (atomic_inc(&(sbi)->inplace_count))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001638#define stat_inc_seg_count(sbi, type) \
1639 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001640 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001641 (si)->tot_segs++; \
1642 if (type == SUM_TYPE_DATA) \
1643 si->data_segs++; \
1644 else \
1645 si->node_segs++; \
1646 } while (0)
1647
1648#define stat_inc_tot_blk_count(si, blks) \
1649 (si->tot_blks += (blks))
1650
1651#define stat_inc_data_blk_count(sbi, blks) \
1652 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001653 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001654 stat_inc_tot_blk_count(si, blks); \
1655 si->data_blks += (blks); \
1656 } while (0)
1657
1658#define stat_inc_node_blk_count(sbi, blks) \
1659 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001660 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001661 stat_inc_tot_blk_count(si, blks); \
1662 si->node_blks += (blks); \
1663 } while (0)
1664
1665int f2fs_build_stats(struct f2fs_sb_info *);
1666void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001667void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001668void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001669#else
Changman Lee942e0be2014-02-13 15:12:29 +09001670#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001671#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001672#define stat_inc_bggc_count(si)
1673#define stat_inc_dirty_dir(sbi)
1674#define stat_dec_dirty_dir(sbi)
1675#define stat_inc_total_hit(sb)
1676#define stat_inc_read_hit(sb)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001677#define stat_inc_inline_inode(inode)
1678#define stat_dec_inline_inode(inode)
Jaegeuk Kim3289c062014-10-13 20:00:16 -07001679#define stat_inc_inline_dir(inode)
1680#define stat_dec_inline_dir(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001681#define stat_inc_seg_type(sbi, curseg)
1682#define stat_inc_block_count(sbi, curseg)
Changman Leeb9a2c252014-12-24 02:16:54 +09001683#define stat_inc_inplace_blocks(sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001684#define stat_inc_seg_count(si, type)
1685#define stat_inc_tot_blk_count(si, blks)
1686#define stat_inc_data_blk_count(si, blks)
1687#define stat_inc_node_blk_count(sbi, blks)
1688
1689static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1690static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001691static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09001692static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001693#endif
1694
1695extern const struct file_operations f2fs_dir_operations;
1696extern const struct file_operations f2fs_file_operations;
1697extern const struct inode_operations f2fs_file_inode_operations;
1698extern const struct address_space_operations f2fs_dblock_aops;
1699extern const struct address_space_operations f2fs_node_aops;
1700extern const struct address_space_operations f2fs_meta_aops;
1701extern const struct inode_operations f2fs_dir_inode_operations;
1702extern const struct inode_operations f2fs_symlink_inode_operations;
1703extern const struct inode_operations f2fs_special_inode_operations;
Jaegeuk Kim29e70432015-02-10 16:23:12 -08001704extern struct kmem_cache *inode_entry_slab;
Huajun Li1001b342013-11-10 23:13:16 +08001705
Huajun Lie18c65b2013-11-10 23:13:19 +08001706/*
1707 * inline.c
1708 */
Huajun Lie18c65b2013-11-10 23:13:19 +08001709bool f2fs_may_inline(struct inode *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001710void read_inline_data(struct page *, struct page *);
Huajun Lie18c65b2013-11-10 23:13:19 +08001711int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb3d208f2014-10-23 19:48:09 -07001712int f2fs_convert_inline_page(struct dnode_of_data *, struct page *);
1713int f2fs_convert_inline_inode(struct inode *);
1714int f2fs_write_inline_data(struct inode *, struct page *);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07001715bool recover_inline_data(struct inode *, struct page *);
Chao Yu201a05b2014-09-24 18:17:53 +08001716struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct qstr *,
1717 struct page **);
1718struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **);
1719int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *);
1720int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *);
1721void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *,
1722 struct inode *, struct inode *);
1723bool f2fs_empty_inline_dir(struct inode *);
1724int f2fs_read_inline_dir(struct file *, struct dir_context *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001725#endif