blob: 8171e80b2ee9f9709c953b4264ea92bee01011c6 [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); \
31 sbi->need_fsck = true; \
32 } \
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
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +090049#define F2FS_MOUNT_FLUSH_MERGE 0x00000200
Jaegeuk Kim0f7b2ab2014-07-23 09:57:31 -070050#define F2FS_MOUNT_NOBARRIER 0x00000400
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090051
52#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
53#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
54#define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option)
55
56#define ver_after(a, b) (typecheck(unsigned long long, a) && \
57 typecheck(unsigned long long, b) && \
58 ((long long)((a) - (b)) > 0))
59
Jaegeuk Kima9841c42013-05-24 12:41:04 +090060typedef u32 block_t; /*
61 * should not change u32, since it is the on-disk block
62 * address format, __le32.
63 */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090064typedef u32 nid_t;
65
66struct f2fs_mount_info {
67 unsigned int opt;
68};
69
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090070#define CRCPOLY_LE 0xedb88320
71
72static inline __u32 f2fs_crc32(void *buf, size_t len)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090073{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090074 unsigned char *p = (unsigned char *)buf;
75 __u32 crc = F2FS_SUPER_MAGIC;
76 int i;
77
78 while (len--) {
79 crc ^= *p++;
80 for (i = 0; i < 8; i++)
81 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
82 }
83 return crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090084}
85
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090086static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090087{
Jaegeuk Kim7e586fa2013-06-19 20:47:19 +090088 return f2fs_crc32(buf, buf_size) == blk_crc;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +090089}
90
91/*
92 * For checkpoint manager
93 */
94enum {
95 NAT_BITMAP,
96 SIT_BITMAP
97};
98
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -070099enum {
100 CP_UMOUNT,
101 CP_SYNC,
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700102 CP_DISCARD,
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700103};
104
105struct cp_control {
106 int reason;
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -0700107 __u64 trim_start;
108 __u64 trim_end;
109 __u64 trim_minlen;
110 __u64 trimmed;
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -0700111};
112
Chao Yu662befd2014-02-07 16:11:53 +0800113/*
Chao Yu81c1a0f12014-02-27 19:12:24 +0800114 * For CP/NAT/SIT/SSA readahead
Chao Yu662befd2014-02-07 16:11:53 +0800115 */
116enum {
117 META_CP,
118 META_NAT,
Chao Yu81c1a0f12014-02-27 19:12:24 +0800119 META_SIT,
Jaegeuk Kim4c521f492014-09-11 13:49:55 -0700120 META_SSA,
121 META_POR,
Chao Yu662befd2014-02-07 16:11:53 +0800122};
123
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700124/* for the list of ino */
125enum {
126 ORPHAN_INO, /* for orphan ino list */
Jaegeuk Kimfff04f92014-07-25 07:40:59 -0700127 APPEND_INO, /* for append ino list */
128 UPDATE_INO, /* for update ino list */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700129 MAX_INO_ENTRY, /* max. list */
130};
131
132struct ino_entry {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900133 struct list_head list; /* list head */
134 nid_t ino; /* inode number */
135};
136
137/* for the list of directory inodes */
138struct dir_inode_entry {
139 struct list_head list; /* list head */
140 struct inode *inode; /* vfs inode pointer */
141};
142
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900143/* for the list of blockaddresses to be discarded */
144struct discard_entry {
145 struct list_head list; /* list head */
146 block_t blkaddr; /* block address to be discarded */
147 int len; /* # of consecutive blocks of the discard */
148};
149
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900150/* for the list of fsync inodes, used only during recovery */
151struct fsync_inode_entry {
152 struct list_head list; /* list head */
153 struct inode *inode; /* vfs inode pointer */
Jaegeuk Kimc52e1b12014-09-11 14:29:06 -0700154 block_t blkaddr; /* block address locating the last fsync */
155 block_t last_dentry; /* block address locating the last dentry */
156 block_t last_inode; /* block address locating the last inode */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900157};
158
159#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
160#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
161
162#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
163#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
164#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
165#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
166
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700167#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
168#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
169
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900170static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
171{
172 int before = nats_in_cursum(rs);
173 rs->n_nats = cpu_to_le16(before + i);
174 return before;
175}
176
177static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
178{
179 int before = sits_in_cursum(rs);
180 rs->n_sits = cpu_to_le16(before + i);
181 return before;
182}
183
Chao Yu184a5cd2014-09-04 18:13:01 +0800184static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
185 int type)
186{
187 if (type == NAT_JOURNAL)
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700188 return size <= MAX_NAT_JENTRIES(sum);
189 return size <= MAX_SIT_JENTRIES(sum);
Chao Yu184a5cd2014-09-04 18:13:01 +0800190}
191
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900192/*
Namjae Jeone9750822013-02-04 23:41:41 +0900193 * ioctl commands
194 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700195#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
196#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
197
198#define F2FS_IOCTL_MAGIC 0xf5
199#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
200#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
Jaegeuk Kim02a13352014-10-06 16:11:16 -0700201#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
Namjae Jeone9750822013-02-04 23:41:41 +0900202
203#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
204/*
205 * ioctl commands in 32 bit emulation
206 */
207#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
208#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
209#endif
210
211/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900212 * For INODE and NODE manager
213 */
Jaegeuk Kimdbe6a5f2013-08-09 08:14:06 +0900214/*
215 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
216 * as its node offset to distinguish from index node blocks.
217 * But some bits are used to mark the node block.
218 */
219#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
220 >> OFFSET_BIT_SHIFT)
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900221enum {
222 ALLOC_NODE, /* allocate a new node page if needed */
223 LOOKUP_NODE, /* look up a node without readahead */
224 LOOKUP_NODE_RA, /*
225 * look up a node with readahead called
Chao Yu4f4124d2013-12-21 18:02:14 +0800226 * by get_data_block.
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900227 */
Jaegeuk Kim266e97a2013-02-26 13:10:46 +0900228};
229
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900230#define F2FS_LINK_MAX 32000 /* maximum link count per file */
231
Chao Yu817202d92014-04-28 17:59:43 +0800232#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
233
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900234/* for in-memory extent cache entry */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +0900235#define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */
236
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900237struct extent_info {
238 rwlock_t ext_lock; /* rwlock for consistency */
239 unsigned int fofs; /* start offset in a file */
240 u32 blk_addr; /* start block address of the extent */
Masanari Iida111d2492013-03-19 08:03:35 +0900241 unsigned int len; /* length of the extent */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900242};
243
244/*
245 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
246 */
247#define FADVISE_COLD_BIT 0x01
Jaegeuk Kim354a3392013-06-14 08:52:35 +0900248#define FADVISE_LOST_PINO_BIT 0x02
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900249
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900250#define DEF_DIR_LEVEL 0
251
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900252struct f2fs_inode_info {
253 struct inode vfs_inode; /* serve a vfs inode */
254 unsigned long i_flags; /* keep an inode flags for ioctl */
255 unsigned char i_advise; /* use to give file attribute hints */
Jaegeuk Kim38431542014-02-27 18:20:00 +0900256 unsigned char i_dir_level; /* use for dentry level for large dir */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900257 unsigned int i_current_depth; /* use only in directory structure */
Jaegeuk Kim6666e6a2012-12-10 17:52:48 +0900258 unsigned int i_pino; /* parent inode number */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900259 umode_t i_acl_mode; /* keep file acl mode temporarily */
260
261 /* Use below internally in f2fs*/
262 unsigned long flags; /* use to pass per-file flags */
Jaegeuk Kimd928bfb2014-03-20 19:10:08 +0900263 struct rw_semaphore i_sem; /* protect fi info */
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700264 atomic_t dirty_pages; /* # of dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900265 f2fs_hash_t chash; /* hash value of given file name */
266 unsigned int clevel; /* maximum level of given file name */
267 nid_t i_xattr_nid; /* node id that contains xattrs */
Jaegeuk Kime518ff82013-08-09 14:46:15 +0900268 unsigned long long xattr_ver; /* cp version of xattr modification */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900269 struct extent_info ext; /* in-memory extent cache entry */
Jaegeuk Kimed57c272014-04-15 11:19:28 +0900270 struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -0700271
272 struct list_head inmem_pages; /* inmemory pages managed by f2fs */
273 struct mutex inmem_lock; /* lock for inmemory pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900274};
275
276static inline void get_extent_info(struct extent_info *ext,
277 struct f2fs_extent i_ext)
278{
279 write_lock(&ext->ext_lock);
280 ext->fofs = le32_to_cpu(i_ext.fofs);
281 ext->blk_addr = le32_to_cpu(i_ext.blk_addr);
282 ext->len = le32_to_cpu(i_ext.len);
283 write_unlock(&ext->ext_lock);
284}
285
286static inline void set_raw_extent(struct extent_info *ext,
287 struct f2fs_extent *i_ext)
288{
289 read_lock(&ext->ext_lock);
290 i_ext->fofs = cpu_to_le32(ext->fofs);
291 i_ext->blk_addr = cpu_to_le32(ext->blk_addr);
292 i_ext->len = cpu_to_le32(ext->len);
293 read_unlock(&ext->ext_lock);
294}
295
296struct f2fs_nm_info {
297 block_t nat_blkaddr; /* base disk address of NAT */
298 nid_t max_nid; /* maximum possible node ids */
Jaegeuk Kim7ee0eea2014-04-18 11:14:37 +0900299 nid_t available_nids; /* maximum available node ids */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900300 nid_t next_scan_nid; /* the next nid to be scanned */
Jaegeuk Kimcdfc41c2014-03-19 13:31:37 +0900301 unsigned int ram_thresh; /* control the memory footprint */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900302
303 /* NAT cache management */
304 struct radix_tree_root nat_root;/* root of the nat entry cache */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700305 struct radix_tree_root nat_set_root;/* root of the nat set cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900306 rwlock_t nat_tree_lock; /* protect nat_tree_lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900307 struct list_head nat_entries; /* cached nat entry list (clean) */
Jaegeuk Kim309cc2b2014-09-22 11:40:48 -0700308 unsigned int nat_cnt; /* the # of cached nat entries */
Chao Yuaec71382014-06-24 09:18:20 +0800309 unsigned int dirty_nat_cnt; /* total num of nat entries in set */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900310
311 /* free node ids management */
Jaegeuk Kim8a7ed662014-02-21 14:29:35 +0900312 struct radix_tree_root free_nid_root;/* root of the free_nid cache */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900313 struct list_head free_nid_list; /* a list for free nids */
314 spinlock_t free_nid_list_lock; /* protect free nid list */
315 unsigned int fcnt; /* the number of free node id */
316 struct mutex build_lock; /* lock for build free nids */
317
318 /* for checkpoint */
319 char *nat_bitmap; /* NAT bitmap pointer */
320 int bitmap_size; /* bitmap size */
321};
322
323/*
324 * this structure is used as one of function parameters.
325 * all the information are dedicated to a given direct node block determined
326 * by the data offset in a file.
327 */
328struct dnode_of_data {
329 struct inode *inode; /* vfs inode pointer */
330 struct page *inode_page; /* its inode page, NULL is possible */
331 struct page *node_page; /* cached direct node page */
332 nid_t nid; /* node id of the direct node block */
333 unsigned int ofs_in_node; /* data offset in the node page */
334 bool inode_page_locked; /* inode page is locked or not */
335 block_t data_blkaddr; /* block address of the node block */
336};
337
338static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
339 struct page *ipage, struct page *npage, nid_t nid)
340{
Jaegeuk Kimd66d1f72013-01-03 08:57:21 +0900341 memset(dn, 0, sizeof(*dn));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900342 dn->inode = inode;
343 dn->inode_page = ipage;
344 dn->node_page = npage;
345 dn->nid = nid;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900346}
347
348/*
349 * For SIT manager
350 *
351 * By default, there are 6 active log areas across the whole main area.
352 * When considering hot and cold data separation to reduce cleaning overhead,
353 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
354 * respectively.
355 * In the current design, you should not change the numbers intentionally.
356 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
357 * logs individually according to the underlying devices. (default: 6)
358 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
359 * data and 8 for node logs.
360 */
361#define NR_CURSEG_DATA_TYPE (3)
362#define NR_CURSEG_NODE_TYPE (3)
363#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
364
365enum {
366 CURSEG_HOT_DATA = 0, /* directory entry blocks */
367 CURSEG_WARM_DATA, /* data blocks */
368 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
369 CURSEG_HOT_NODE, /* direct node blocks of directory files */
370 CURSEG_WARM_NODE, /* direct node blocks of normal files */
371 CURSEG_COLD_NODE, /* indirect node blocks */
372 NO_CHECK_TYPE
373};
374
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900375struct flush_cmd {
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900376 struct completion wait;
Gu Zheng721bd4d2014-09-05 18:31:00 +0800377 struct llist_node llnode;
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900378 int ret;
379};
380
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800381struct flush_cmd_control {
382 struct task_struct *f2fs_issue_flush; /* flush thread */
383 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
Gu Zheng721bd4d2014-09-05 18:31:00 +0800384 struct llist_head issue_list; /* list for command issue */
385 struct llist_node *dispatch_list; /* list for command dispatch */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800386};
387
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900388struct f2fs_sm_info {
389 struct sit_info *sit_info; /* whole segment information */
390 struct free_segmap_info *free_info; /* free segment information */
391 struct dirty_seglist_info *dirty_info; /* dirty segment information */
392 struct curseg_info *curseg_array; /* active segment information */
393
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900394 block_t seg0_blkaddr; /* block address of 0'th segment */
395 block_t main_blkaddr; /* start block address of main area */
396 block_t ssa_blkaddr; /* start block address of SSA area */
397
398 unsigned int segment_count; /* total # of segments */
399 unsigned int main_segments; /* # of segments in main area */
400 unsigned int reserved_segments; /* # of reserved segments */
401 unsigned int ovp_segments; /* # of overprovision segments */
Jaegeuk Kim81eb8d62013-10-24 13:31:34 +0900402
403 /* a threshold to reclaim prefree segments */
404 unsigned int rec_prefree_segments;
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +0900405
406 /* for small discard management */
407 struct list_head discard_list; /* 4KB discard list */
408 int nr_discards; /* # of discards in the list */
409 int max_discards; /* max. discards to be issued */
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900410
Chao Yu184a5cd2014-09-04 18:13:01 +0800411 struct list_head sit_entry_set; /* sit entry set list */
412
Jaegeuk Kim216fbd62013-11-07 13:13:42 +0900413 unsigned int ipu_policy; /* in-place-update policy */
414 unsigned int min_ipu_util; /* in-place-update threshold */
Jaegeuk Kimc1ce1b02014-09-10 16:53:02 -0700415 unsigned int min_fsync_blocks; /* threshold for fsync */
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +0900416
417 /* for flush command control */
Gu Zhenga688b9d9e2014-04-27 14:21:21 +0800418 struct flush_cmd_control *cmd_control_info;
419
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900420};
421
422/*
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900423 * For superblock
424 */
425/*
426 * COUNT_TYPE for monitoring
427 *
428 * f2fs monitors the number of several block types such as on-writeback,
429 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
430 */
431enum count_type {
432 F2FS_WRITEBACK,
433 F2FS_DIRTY_DENTS,
434 F2FS_DIRTY_NODES,
435 F2FS_DIRTY_META,
436 NR_COUNT_TYPE,
437};
438
439/*
arter97e1c42042014-08-06 23:22:50 +0900440 * The below are the page types of bios used in submit_bio().
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900441 * The available types are:
442 * DATA User data pages. It operates as async mode.
443 * NODE Node pages. It operates as async mode.
444 * META FS metadata pages such as SIT, NAT, CP.
445 * NR_PAGE_TYPE The number of page types.
446 * META_FLUSH Make sure the previous pages are written
447 * with waiting the bio's completion
448 * ... Only can be used with META.
449 */
Jaegeuk Kim7d5e5102013-11-18 17:13:35 +0900450#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900451enum page_type {
452 DATA,
453 NODE,
454 META,
455 NR_PAGE_TYPE,
456 META_FLUSH,
457};
458
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900459struct f2fs_io_info {
Gu Zheng7e8f2302013-12-20 18:17:49 +0800460 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
461 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900462};
463
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +0900464#define is_read_io(rw) (((rw) & 1) == READ)
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900465struct f2fs_bio_info {
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900466 struct f2fs_sb_info *sbi; /* f2fs superblock */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900467 struct bio *bio; /* bios to merge */
468 sector_t last_block_in_bio; /* last block number */
Jaegeuk Kim458e6192013-12-11 13:54:01 +0900469 struct f2fs_io_info fio; /* store buffered io info. */
Chao Yudf0f8dc2014-03-22 14:57:23 +0800470 struct rw_semaphore io_rwsem; /* blocking op for bio */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900471};
472
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900473struct f2fs_sb_info {
474 struct super_block *sb; /* pointer to VFS super block */
Jaegeuk Kim5e176d52013-06-28 12:47:01 +0900475 struct proc_dir_entry *s_proc; /* proc entry */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900476 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
477 struct f2fs_super_block *raw_super; /* raw super block pointer */
478 int s_dirty; /* dirty flag for checkpoint */
Jaegeuk Kim2ae4c672014-09-02 15:43:52 -0700479 bool need_fsck; /* need fsck.f2fs to fix */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900480
481 /* for node-related operations */
482 struct f2fs_nm_info *nm_info; /* node manager */
483 struct inode *node_inode; /* cache node blocks */
484
485 /* for segment-related operations */
486 struct f2fs_sm_info *sm_info; /* segment manager */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900487
488 /* for bio operations */
Chao Yu924b7202013-11-20 14:46:39 +0800489 struct f2fs_bio_info read_io; /* for read bios */
Jaegeuk Kim1ff7bd32013-11-19 12:47:22 +0900490 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
Jaegeuk Kim1b1f5592014-02-03 10:50:22 +0900491 struct completion *wait_io; /* for completion bios */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900492
493 /* for checkpoint */
494 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
495 struct inode *meta_inode; /* cache meta blocks */
Jaegeuk Kim39936832012-11-22 16:21:29 +0900496 struct mutex cp_mutex; /* checkpoint procedure lock */
Gu Zhenge4795562013-09-27 18:08:30 +0800497 struct rw_semaphore cp_rwsem; /* blocking FS operations */
Chao Yub3582c62014-07-03 18:58:39 +0800498 struct rw_semaphore node_write; /* locking node writes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900499 struct mutex writepages; /* mutex for writepages() */
Haicheng Liaabe5132013-10-23 12:39:32 +0800500 bool por_doing; /* recovery is doing or not */
Changman Leefb51b5e2013-11-07 12:48:25 +0900501 wait_queue_head_t cp_wait;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900502
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700503 /* for inode management */
Jaegeuk Kim39efac42014-07-24 18:15:17 -0700504 struct radix_tree_root ino_root[MAX_INO_ENTRY]; /* ino entry array */
Jaegeuk Kim6451e042014-07-25 15:47:17 -0700505 spinlock_t ino_lock[MAX_INO_ENTRY]; /* for ino entry lock */
506 struct list_head ino_list[MAX_INO_ENTRY]; /* inode list head */
507
508 /* for orphan inode, use 0'th array */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900509 unsigned int n_orphans; /* # of orphan inodes */
Gu Zheng0d47c1a2013-12-26 18:24:19 +0800510 unsigned int max_orphans; /* max orphan inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900511
512 /* for directory inode management */
513 struct list_head dir_inode_list; /* dir inode list */
514 spinlock_t dir_inode_lock; /* for dir inode list lock */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900515
arter97e1c42042014-08-06 23:22:50 +0900516 /* basic filesystem units */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900517 unsigned int log_sectors_per_block; /* log2 sectors per block */
518 unsigned int log_blocksize; /* log2 block size */
519 unsigned int blocksize; /* block size */
520 unsigned int root_ino_num; /* root inode number*/
521 unsigned int node_ino_num; /* node inode number*/
522 unsigned int meta_ino_num; /* meta inode number*/
523 unsigned int log_blocks_per_seg; /* log2 blocks per segment */
524 unsigned int blocks_per_seg; /* blocks per segment */
525 unsigned int segs_per_sec; /* segments per section */
526 unsigned int secs_per_zone; /* sections per zone */
527 unsigned int total_sections; /* total section count */
528 unsigned int total_node_count; /* total node block count */
529 unsigned int total_valid_node_count; /* valid node block count */
530 unsigned int total_valid_inode_count; /* valid inode count */
531 int active_logs; /* # of active logs */
Jaegeuk Kimab9fa662014-02-27 20:09:05 +0900532 int dir_level; /* directory level */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900533
534 block_t user_block_count; /* # of user blocks */
535 block_t total_valid_block_count; /* # of valid blocks */
536 block_t alloc_valid_block_count; /* # of allocated blocks */
537 block_t last_valid_block_count; /* for recovery */
538 u32 s_next_generation; /* for NFS support */
539 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */
540
541 struct f2fs_mount_info mount_opt; /* mount options */
542
543 /* for cleaning operations */
544 struct mutex gc_mutex; /* mutex for GC */
545 struct f2fs_gc_kthread *gc_thread; /* GC thread */
Jaegeuk Kim5ec4e492013-03-31 13:26:03 +0900546 unsigned int cur_victim_sec; /* current victim section num */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900547
Jaegeuk Kimb1c57c12014-01-08 13:45:08 +0900548 /* maximum # of trials to find a victim segment for SSR and GC */
549 unsigned int max_victim_search;
550
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900551 /*
552 * for stat information.
553 * one is for the LFS mode, and the other is for the SSR mode.
554 */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900555#ifdef CONFIG_F2FS_STAT_FS
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900556 struct f2fs_stat_info *stat_info; /* FS status information */
557 unsigned int segment_count[2]; /* # of allocated segments */
558 unsigned int block_count[2]; /* # of allocated blocks */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900559 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +0900560 int inline_inode; /* # of inline_data inodes */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900561 int bg_gc; /* background gc calls */
Namjae Jeon35b09d82013-05-23 22:57:53 +0900562 unsigned int n_dirty_dirs; /* # of dir inodes */
563#endif
564 unsigned int last_victim[2]; /* last victim segment # */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900565 spinlock_t stat_lock; /* lock for stat operations */
Namjae Jeonb59d0ba2013-08-04 23:09:40 +0900566
567 /* For sysfs suppport */
568 struct kobject s_kobj;
569 struct completion s_kobj_unregister;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900570};
571
572/*
573 * Inline functions
574 */
575static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
576{
577 return container_of(inode, struct f2fs_inode_info, vfs_inode);
578}
579
580static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
581{
582 return sb->s_fs_info;
583}
584
Jaegeuk Kim40813632014-09-02 15:31:18 -0700585static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
586{
587 return F2FS_SB(inode->i_sb);
588}
589
590static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
591{
592 return F2FS_I_SB(mapping->host);
593}
594
595static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
596{
597 return F2FS_M_SB(page->mapping);
598}
599
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900600static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
601{
602 return (struct f2fs_super_block *)(sbi->raw_super);
603}
604
605static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
606{
607 return (struct f2fs_checkpoint *)(sbi->ckpt);
608}
609
Gu Zheng45590712013-07-15 17:57:38 +0800610static inline struct f2fs_node *F2FS_NODE(struct page *page)
611{
612 return (struct f2fs_node *)page_address(page);
613}
614
Jaegeuk Kim58bfaf42013-12-26 16:30:41 +0900615static inline struct f2fs_inode *F2FS_INODE(struct page *page)
616{
617 return &((struct f2fs_node *)page_address(page))->i;
618}
619
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900620static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
621{
622 return (struct f2fs_nm_info *)(sbi->nm_info);
623}
624
625static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
626{
627 return (struct f2fs_sm_info *)(sbi->sm_info);
628}
629
630static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
631{
632 return (struct sit_info *)(SM_I(sbi)->sit_info);
633}
634
635static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
636{
637 return (struct free_segmap_info *)(SM_I(sbi)->free_info);
638}
639
640static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
641{
642 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
643}
644
Gu Zheng9df27d92014-01-20 18:37:04 +0800645static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
646{
647 return sbi->meta_inode->i_mapping;
648}
649
Jaegeuk Kim4ef51a82014-01-21 18:51:16 +0900650static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
651{
652 return sbi->node_inode->i_mapping;
653}
654
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900655static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
656{
657 sbi->s_dirty = 1;
658}
659
660static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
661{
662 sbi->s_dirty = 0;
663}
664
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900665static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
666{
667 return le64_to_cpu(cp->checkpoint_ver);
668}
669
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900670static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
671{
672 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
673 return ckpt_flags & f;
674}
675
676static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
677{
678 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
679 ckpt_flags |= f;
680 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
681}
682
683static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
684{
685 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
686 ckpt_flags &= (~f);
687 cp->ckpt_flags = cpu_to_le32(ckpt_flags);
688}
689
Gu Zhenge4795562013-09-27 18:08:30 +0800690static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900691{
Gu Zhenge4795562013-09-27 18:08:30 +0800692 down_read(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900693}
694
Gu Zhenge4795562013-09-27 18:08:30 +0800695static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900696{
Gu Zhenge4795562013-09-27 18:08:30 +0800697 up_read(&sbi->cp_rwsem);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900698}
699
Gu Zhenge4795562013-09-27 18:08:30 +0800700static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900701{
Jaegeuk Kim0daaad92013-11-24 13:50:35 +0900702 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex);
Jaegeuk Kim39936832012-11-22 16:21:29 +0900703}
704
Gu Zhenge4795562013-09-27 18:08:30 +0800705static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
Jaegeuk Kim39936832012-11-22 16:21:29 +0900706{
Gu Zhenge4795562013-09-27 18:08:30 +0800707 up_write(&sbi->cp_rwsem);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900708}
709
710/*
711 * Check whether the given nid is within node id range.
712 */
Namjae Jeon064e0822013-03-17 17:27:20 +0900713static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900714{
Chao Yud6b7d4b2014-06-12 13:23:41 +0800715 if (unlikely(nid < F2FS_ROOT_INO(sbi)))
716 return -EINVAL;
Chao Yucfb271d2013-12-05 17:15:22 +0800717 if (unlikely(nid >= NM_I(sbi)->max_nid))
Namjae Jeon064e0822013-03-17 17:27:20 +0900718 return -EINVAL;
719 return 0;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900720}
721
722#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
723
724/*
725 * Check whether the inode has blocks or not
726 */
727static inline int F2FS_HAS_BLOCKS(struct inode *inode)
728{
729 if (F2FS_I(inode)->i_xattr_nid)
Chris Fries6c311ec2014-01-17 14:44:39 -0600730 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900731 else
Chris Fries6c311ec2014-01-17 14:44:39 -0600732 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900733}
734
Chao Yu4bc8e9b2014-03-17 16:35:06 +0800735static inline bool f2fs_has_xattr_block(unsigned int ofs)
736{
737 return ofs == XATTR_NODE_OFFSET;
738}
739
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900740static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi,
741 struct inode *inode, blkcnt_t count)
742{
743 block_t valid_block_count;
744
745 spin_lock(&sbi->stat_lock);
746 valid_block_count =
747 sbi->total_valid_block_count + (block_t)count;
Chao Yucfb271d2013-12-05 17:15:22 +0800748 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900749 spin_unlock(&sbi->stat_lock);
750 return false;
751 }
752 inode->i_blocks += count;
753 sbi->total_valid_block_count = valid_block_count;
754 sbi->alloc_valid_block_count += (block_t)count;
755 spin_unlock(&sbi->stat_lock);
756 return true;
757}
758
Gu Zhengda19b0d2013-11-19 18:03:27 +0800759static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900760 struct inode *inode,
761 blkcnt_t count)
762{
763 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700764 f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
765 f2fs_bug_on(sbi, inode->i_blocks < count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900766 inode->i_blocks -= count;
767 sbi->total_valid_block_count -= (block_t)count;
768 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900769}
770
771static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
772{
773 atomic_inc(&sbi->nr_pages[count_type]);
774 F2FS_SET_SB_DIRT(sbi);
775}
776
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700777static inline void inode_inc_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900778{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700779 atomic_inc(&F2FS_I(inode)->dirty_pages);
780 if (S_ISDIR(inode->i_mode))
781 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900782}
783
784static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
785{
786 atomic_dec(&sbi->nr_pages[count_type]);
787}
788
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700789static inline void inode_dec_dirty_pages(struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900790{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700791 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
Jaegeuk Kim1fe54f92014-02-07 10:00:06 +0900792 return;
793
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700794 atomic_dec(&F2FS_I(inode)->dirty_pages);
795
796 if (S_ISDIR(inode->i_mode))
797 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900798}
799
800static inline int get_pages(struct f2fs_sb_info *sbi, int count_type)
801{
802 return atomic_read(&sbi->nr_pages[count_type]);
803}
804
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700805static inline int get_dirty_pages(struct inode *inode)
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900806{
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -0700807 return atomic_read(&F2FS_I(inode)->dirty_pages);
Jaegeuk Kimf8b2c1f2014-03-18 12:33:06 +0900808}
809
Namjae Jeon5ac206c2013-02-02 23:52:59 +0900810static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
811{
812 unsigned int pages_per_sec = sbi->segs_per_sec *
813 (1 << sbi->log_blocks_per_seg);
814 return ((get_pages(sbi, block_type) + pages_per_sec - 1)
815 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
816}
817
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900818static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
819{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +0900820 return sbi->total_valid_block_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900821}
822
823static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
824{
825 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
826
827 /* return NAT or SIT bitmap */
828 if (flag == NAT_BITMAP)
829 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
830 else if (flag == SIT_BITMAP)
831 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
832
833 return 0;
834}
835
836static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
837{
838 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Changman Lee1dbe4152014-05-12 12:27:43 +0900839 int offset;
840
841 if (le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload) > 0) {
842 if (flag == NAT_BITMAP)
843 return &ckpt->sit_nat_version_bitmap;
844 else
Jaegeuk Kim65b85cc2014-07-30 17:25:54 -0700845 return (unsigned char *)ckpt + F2FS_BLKSIZE;
Changman Lee1dbe4152014-05-12 12:27:43 +0900846 } else {
847 offset = (flag == NAT_BITMAP) ?
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900848 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
Changman Lee1dbe4152014-05-12 12:27:43 +0900849 return &ckpt->sit_nat_version_bitmap + offset;
850 }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900851}
852
853static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
854{
855 block_t start_addr;
856 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
Jaegeuk Kimd71b5562013-08-09 15:03:21 +0900857 unsigned long long ckpt_version = cur_cp_version(ckpt);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900858
Jaegeuk Kim25ca9232012-11-28 16:12:41 +0900859 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900860
861 /*
862 * odd numbered checkpoint should at cp segment 0
arter97e1c42042014-08-06 23:22:50 +0900863 * and even segment must be at cp segment 1
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900864 */
865 if (!(ckpt_version & 1))
866 start_addr += sbi->blocks_per_seg;
867
868 return start_addr;
869}
870
871static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
872{
873 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
874}
875
876static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +0800877 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900878{
879 block_t valid_block_count;
880 unsigned int valid_node_count;
881
882 spin_lock(&sbi->stat_lock);
883
Gu Zhengef86d702013-11-19 18:03:38 +0800884 valid_block_count = sbi->total_valid_block_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +0800885 if (unlikely(valid_block_count > sbi->user_block_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900886 spin_unlock(&sbi->stat_lock);
887 return false;
888 }
889
Gu Zhengef86d702013-11-19 18:03:38 +0800890 valid_node_count = sbi->total_valid_node_count + 1;
Chao Yucfb271d2013-12-05 17:15:22 +0800891 if (unlikely(valid_node_count > sbi->total_node_count)) {
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900892 spin_unlock(&sbi->stat_lock);
893 return false;
894 }
895
896 if (inode)
Gu Zhengef86d702013-11-19 18:03:38 +0800897 inode->i_blocks++;
898
899 sbi->alloc_valid_block_count++;
900 sbi->total_valid_node_count++;
901 sbi->total_valid_block_count++;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900902 spin_unlock(&sbi->stat_lock);
903
904 return true;
905}
906
907static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
Gu Zhengef86d702013-11-19 18:03:38 +0800908 struct inode *inode)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900909{
910 spin_lock(&sbi->stat_lock);
911
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700912 f2fs_bug_on(sbi, !sbi->total_valid_block_count);
913 f2fs_bug_on(sbi, !sbi->total_valid_node_count);
914 f2fs_bug_on(sbi, !inode->i_blocks);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900915
Gu Zhengef86d702013-11-19 18:03:38 +0800916 inode->i_blocks--;
917 sbi->total_valid_node_count--;
918 sbi->total_valid_block_count--;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900919
920 spin_unlock(&sbi->stat_lock);
921}
922
923static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
924{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +0900925 return sbi->total_valid_node_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900926}
927
928static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
929{
930 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700931 f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900932 sbi->total_valid_inode_count++;
933 spin_unlock(&sbi->stat_lock);
934}
935
Jaegeuk Kim0e802202013-11-26 16:36:20 +0900936static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900937{
938 spin_lock(&sbi->stat_lock);
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700939 f2fs_bug_on(sbi, !sbi->total_valid_inode_count);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900940 sbi->total_valid_inode_count--;
941 spin_unlock(&sbi->stat_lock);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900942}
943
944static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi)
945{
Jaegeuk Kim8b8343f2014-02-24 13:00:13 +0900946 return sbi->total_valid_inode_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900947}
948
949static inline void f2fs_put_page(struct page *page, int unlock)
950{
Jaegeuk Kim031fa8c2013-11-28 12:55:13 +0900951 if (!page)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900952 return;
953
954 if (unlock) {
Jaegeuk Kim9850cf42014-09-02 15:52:58 -0700955 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900956 unlock_page(page);
957 }
958 page_cache_release(page);
959}
960
961static inline void f2fs_put_dnode(struct dnode_of_data *dn)
962{
963 if (dn->node_page)
964 f2fs_put_page(dn->node_page, 1);
965 if (dn->inode_page && dn->node_page != dn->inode_page)
966 f2fs_put_page(dn->inode_page, 0);
967 dn->node_page = NULL;
968 dn->inode_page = NULL;
969}
970
971static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
Gu Zhenge8512d22014-03-07 18:43:28 +0800972 size_t size)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900973{
Gu Zhenge8512d22014-03-07 18:43:28 +0800974 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900975}
976
Gu Zheng7bd59382013-10-22 14:52:26 +0800977static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
978 gfp_t flags)
979{
980 void *entry;
981retry:
982 entry = kmem_cache_alloc(cachep, flags);
983 if (!entry) {
984 cond_resched();
985 goto retry;
986 }
987
988 return entry;
989}
990
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900991#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
992
993static inline bool IS_INODE(struct page *page)
994{
Gu Zheng45590712013-07-15 17:57:38 +0800995 struct f2fs_node *p = F2FS_NODE(page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +0900996 return RAW_IS_INODE(p);
997}
998
999static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
1000{
1001 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
1002}
1003
1004static inline block_t datablock_addr(struct page *node_page,
1005 unsigned int offset)
1006{
1007 struct f2fs_node *raw_node;
1008 __le32 *addr_array;
Gu Zheng45590712013-07-15 17:57:38 +08001009 raw_node = F2FS_NODE(node_page);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001010 addr_array = blkaddr_in_node(raw_node);
1011 return le32_to_cpu(addr_array[offset]);
1012}
1013
1014static inline int f2fs_test_bit(unsigned int nr, char *addr)
1015{
1016 int mask;
1017
1018 addr += (nr >> 3);
1019 mask = 1 << (7 - (nr & 0x07));
1020 return mask & *addr;
1021}
1022
1023static inline int f2fs_set_bit(unsigned int nr, char *addr)
1024{
1025 int mask;
1026 int ret;
1027
1028 addr += (nr >> 3);
1029 mask = 1 << (7 - (nr & 0x07));
1030 ret = mask & *addr;
1031 *addr |= mask;
1032 return ret;
1033}
1034
1035static inline int f2fs_clear_bit(unsigned int nr, char *addr)
1036{
1037 int mask;
1038 int ret;
1039
1040 addr += (nr >> 3);
1041 mask = 1 << (7 - (nr & 0x07));
1042 ret = mask & *addr;
1043 *addr &= ~mask;
1044 return ret;
1045}
1046
1047/* used for f2fs_inode_info->flags */
1048enum {
1049 FI_NEW_INODE, /* indicate newly allocated inode */
Jaegeuk Kimb3783872013-06-10 09:17:01 +09001050 FI_DIRTY_INODE, /* indicate inode is dirty or not */
Jaegeuk Kimed57c272014-04-15 11:19:28 +09001051 FI_DIRTY_DIR, /* indicate directory has dirty pages */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001052 FI_INC_LINK, /* need to increment i_nlink */
1053 FI_ACL_MODE, /* indicate acl mode */
1054 FI_NO_ALLOC, /* should not allocate any blocks */
Jaegeuk Kim699489b2013-06-07 22:08:23 +09001055 FI_UPDATE_DIR, /* should update inode block for consistency */
Jaegeuk Kim74d0b912013-05-15 16:40:02 +09001056 FI_DELAY_IPUT, /* used for the recovery */
Jaegeuk Kimc11abd12013-11-19 10:41:54 +09001057 FI_NO_EXTENT, /* not to use the extent cache */
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001058 FI_INLINE_XATTR, /* used for inline xattr */
Huajun Li1001b342013-11-10 23:13:16 +08001059 FI_INLINE_DATA, /* used for inline data*/
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001060 FI_APPEND_WRITE, /* inode has appended data */
1061 FI_UPDATE_WRITE, /* inode has in-place-update data */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001062 FI_NEED_IPU, /* used for ipu per file */
1063 FI_ATOMIC_FILE, /* indicate atomic file */
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001064 FI_VOLATILE_FILE, /* indicate volatile file */
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001065};
1066
1067static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
1068{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001069 if (!test_bit(flag, &fi->flags))
1070 set_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001071}
1072
1073static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
1074{
1075 return test_bit(flag, &fi->flags);
1076}
1077
1078static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1079{
Jaegeuk Kim61e0f2d2014-07-25 15:47:23 -07001080 if (test_bit(flag, &fi->flags))
1081 clear_bit(flag, &fi->flags);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001082}
1083
1084static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)
1085{
1086 fi->i_acl_mode = mode;
1087 set_inode_flag(fi, FI_ACL_MODE);
1088}
1089
1090static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag)
1091{
1092 if (is_inode_flag_set(fi, FI_ACL_MODE)) {
1093 clear_inode_flag(fi, FI_ACL_MODE);
1094 return 1;
1095 }
1096 return 0;
1097}
1098
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001099static inline void get_inline_info(struct f2fs_inode_info *fi,
1100 struct f2fs_inode *ri)
1101{
1102 if (ri->i_inline & F2FS_INLINE_XATTR)
1103 set_inode_flag(fi, FI_INLINE_XATTR);
Huajun Li1001b342013-11-10 23:13:16 +08001104 if (ri->i_inline & F2FS_INLINE_DATA)
1105 set_inode_flag(fi, FI_INLINE_DATA);
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001106}
1107
1108static inline void set_raw_inline(struct f2fs_inode_info *fi,
1109 struct f2fs_inode *ri)
1110{
1111 ri->i_inline = 0;
1112
1113 if (is_inode_flag_set(fi, FI_INLINE_XATTR))
1114 ri->i_inline |= F2FS_INLINE_XATTR;
Huajun Li1001b342013-11-10 23:13:16 +08001115 if (is_inode_flag_set(fi, FI_INLINE_DATA))
1116 ri->i_inline |= F2FS_INLINE_DATA;
Jaegeuk Kim444c5802013-08-08 15:16:22 +09001117}
1118
Chao Yu987c7c32014-03-12 15:59:03 +08001119static inline int f2fs_has_inline_xattr(struct inode *inode)
1120{
1121 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR);
1122}
1123
Jaegeuk Kimde936532013-08-12 21:08:03 +09001124static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
1125{
Chao Yu987c7c32014-03-12 15:59:03 +08001126 if (f2fs_has_inline_xattr(&fi->vfs_inode))
Jaegeuk Kimde936532013-08-12 21:08:03 +09001127 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
1128 return DEF_ADDRS_PER_INODE;
1129}
1130
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001131static inline void *inline_xattr_addr(struct page *page)
1132{
Chao Yu695fd1e2014-02-27 19:52:21 +08001133 struct f2fs_inode *ri = F2FS_INODE(page);
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001134 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
1135 F2FS_INLINE_XATTR_ADDRS]);
1136}
1137
1138static inline int inline_xattr_size(struct inode *inode)
1139{
Chao Yu987c7c32014-03-12 15:59:03 +08001140 if (f2fs_has_inline_xattr(inode))
Jaegeuk Kim65985d92013-08-14 21:57:27 +09001141 return F2FS_INLINE_XATTR_ADDRS << 2;
1142 else
1143 return 0;
1144}
1145
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001146static inline int f2fs_has_inline_data(struct inode *inode)
1147{
1148 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA);
1149}
1150
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001151static inline bool f2fs_is_atomic_file(struct inode *inode)
1152{
1153 return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE);
1154}
1155
Jaegeuk Kim02a13352014-10-06 16:11:16 -07001156static inline bool f2fs_is_volatile_file(struct inode *inode)
1157{
1158 return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE);
1159}
1160
Huajun Li1001b342013-11-10 23:13:16 +08001161static inline void *inline_data_addr(struct page *page)
1162{
Chao Yu695fd1e2014-02-27 19:52:21 +08001163 struct f2fs_inode *ri = F2FS_INODE(page);
Huajun Li1001b342013-11-10 23:13:16 +08001164 return (void *)&(ri->i_addr[1]);
1165}
1166
Jaegeuk Kim77888c12013-05-20 20:28:47 +09001167static inline int f2fs_readonly(struct super_block *sb)
1168{
1169 return sb->s_flags & MS_RDONLY;
1170}
1171
Jaegeuk Kim1e968fd2014-08-11 16:49:25 -07001172static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
1173{
1174 return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1175}
1176
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001177static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi)
1178{
1179 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
1180 sbi->sb->s_flags |= MS_RDONLY;
1181}
1182
Christoph Hellwiga6dda0e2013-12-20 05:16:45 -08001183#define get_inode_mode(i) \
1184 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \
1185 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
1186
Chao Yu267378d2014-04-23 14:10:24 +08001187/* get offset of first page in next direct node */
1188#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \
1189 ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \
1190 (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \
1191 ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi))
1192
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001193/*
1194 * file.c
1195 */
1196int f2fs_sync_file(struct file *, loff_t, loff_t, int);
1197void truncate_data_blocks(struct dnode_of_data *);
Jaegeuk Kim764aa3e2014-08-14 16:32:54 -07001198int truncate_blocks(struct inode *, u64, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001199void f2fs_truncate(struct inode *);
Jaegeuk Kim2d4d9fb52013-06-07 16:33:07 +09001200int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001201int f2fs_setattr(struct dentry *, struct iattr *);
1202int truncate_hole(struct inode *, pgoff_t, pgoff_t);
Jaegeuk Kimb292dcab2013-05-22 08:02:02 +09001203int truncate_data_blocks_range(struct dnode_of_data *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001204long f2fs_ioctl(struct file *, unsigned int, unsigned long);
Namjae Jeone9750822013-02-04 23:41:41 +09001205long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001206
1207/*
1208 * inode.c
1209 */
1210void f2fs_set_inode_flags(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001211struct inode *f2fs_iget(struct super_block *, unsigned long);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001212int try_to_free_nats(struct f2fs_sb_info *, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001213void update_inode(struct inode *, struct page *);
Jaegeuk Kim744602c2014-01-24 09:42:16 +09001214void update_inode_page(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001215int f2fs_write_inode(struct inode *, struct writeback_control *);
1216void f2fs_evict_inode(struct inode *);
Jaegeuk Kim44c16152014-09-25 11:55:53 -07001217void handle_failed_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001218
1219/*
1220 * namei.c
1221 */
1222struct dentry *f2fs_get_parent(struct dentry *child);
1223
1224/*
1225 * dir.c
1226 */
1227struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *,
1228 struct page **);
1229struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **);
1230ino_t f2fs_inode_by_name(struct inode *, struct qstr *);
1231void f2fs_set_link(struct inode *, struct f2fs_dir_entry *,
1232 struct page *, struct inode *);
Jaegeuk Kim1cd14ca2013-07-18 18:02:31 +09001233int update_dent_inode(struct inode *, const struct qstr *);
Al Virob7f7a5e2013-01-25 16:15:43 -05001234int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001235void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *);
Jaegeuk Kimb97a9b52014-06-20 21:37:02 -07001236int f2fs_do_tmpfile(struct inode *, struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001237int f2fs_make_empty(struct inode *, struct inode *);
1238bool f2fs_empty_dir(struct inode *);
1239
Al Virob7f7a5e2013-01-25 16:15:43 -05001240static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
1241{
1242 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name,
1243 inode);
1244}
1245
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001246/*
1247 * super.c
1248 */
1249int f2fs_sync_fs(struct super_block *, int);
Namjae Jeona07ef782012-12-30 14:52:05 +09001250extern __printf(3, 4)
1251void f2fs_msg(struct super_block *, const char *, const char *, ...);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001252
1253/*
1254 * hash.c
1255 */
Gu Zhengeee61602014-06-24 18:21:23 +08001256f2fs_hash_t f2fs_dentry_hash(const struct qstr *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001257
1258/*
1259 * node.c
1260 */
1261struct dnode_of_data;
1262struct node_info;
1263
Jaegeuk Kim6fb03f32014-04-16 10:47:06 +09001264bool available_free_memory(struct f2fs_sb_info *, int);
Jaegeuk Kim88bd02c2014-09-15 14:50:48 -07001265bool is_checkpointed_node(struct f2fs_sb_info *, nid_t);
1266bool has_fsynced_inode(struct f2fs_sb_info *, nid_t);
1267bool need_inode_block_update(struct f2fs_sb_info *, nid_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001268void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
1269int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
1270int truncate_inode_blocks(struct inode *, pgoff_t);
Jaegeuk Kim4f16fb02013-08-14 20:40:06 +09001271int truncate_xattr_node(struct inode *, struct page *);
Jaegeuk Kimcfe58f92013-10-31 14:57:01 +09001272int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t);
Gu Zheng58e674d2013-11-19 18:03:18 +08001273void remove_inode_page(struct inode *);
Jaegeuk Kima014e032014-06-20 21:44:02 -07001274struct page *new_inode_page(struct inode *);
Jaegeuk Kim8ae8f162013-06-03 19:46:19 +09001275struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001276void ra_node_page(struct f2fs_sb_info *, nid_t);
1277struct page *get_node_page(struct f2fs_sb_info *, pgoff_t);
1278struct page *get_node_page_ra(struct page *, int);
1279void sync_inode_page(struct dnode_of_data *);
1280int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *);
1281bool alloc_nid(struct f2fs_sb_info *, nid_t *);
1282void alloc_nid_done(struct f2fs_sb_info *, nid_t);
1283void alloc_nid_failed(struct f2fs_sb_info *, nid_t);
Chao Yu70cfed82014-08-02 15:26:04 +08001284void recover_inline_xattr(struct inode *, struct page *);
Jaegeuk Kim1c35a902014-08-07 23:49:17 -07001285void recover_xattr_data(struct inode *, struct page *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001286int recover_inode_page(struct f2fs_sb_info *, struct page *);
1287int restore_node_summary(struct f2fs_sb_info *, unsigned int,
1288 struct f2fs_summary_block *);
1289void flush_nat_entries(struct f2fs_sb_info *);
1290int build_node_manager(struct f2fs_sb_info *);
1291void destroy_node_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001292int __init create_node_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001293void destroy_node_manager_caches(void);
1294
1295/*
1296 * segment.c
1297 */
Jaegeuk Kim88b88a62014-10-06 17:39:50 -07001298void register_inmem_page(struct inode *, struct page *);
1299void commit_inmem_pages(struct inode *, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001300void f2fs_balance_fs(struct f2fs_sb_info *);
Jaegeuk Kim4660f9c2013-10-24 14:19:18 +09001301void f2fs_balance_fs_bg(struct f2fs_sb_info *);
Jaegeuk Kim6b4afdd2014-04-02 15:34:36 +09001302int f2fs_issue_flush(struct f2fs_sb_info *);
Gu Zheng2163d192014-04-27 14:21:33 +08001303int create_flush_cmd_control(struct f2fs_sb_info *);
1304void destroy_flush_cmd_control(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001305void invalidate_blocks(struct f2fs_sb_info *, block_t);
Jaegeuk Kim5e443812014-01-28 12:22:14 +09001306void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001307void clear_prefree_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001308void release_discard_addrs(struct f2fs_sb_info *);
Jaegeuk Kimcf2271e2014-07-25 15:47:25 -07001309void discard_next_dnode(struct f2fs_sb_info *, block_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001310int npages_for_summary_flush(struct f2fs_sb_info *);
1311void allocate_new_segments(struct f2fs_sb_info *);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001312int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001313struct page *get_sum_page(struct f2fs_sb_info *, unsigned int);
Jaegeuk Kim577e3492013-01-24 19:56:11 +09001314void write_meta_page(struct f2fs_sb_info *, struct page *);
Jaegeuk Kimfb5566d2014-01-08 10:09:51 +09001315void write_node_page(struct f2fs_sb_info *, struct page *,
1316 struct f2fs_io_info *, unsigned int, block_t, block_t *);
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001317void write_data_page(struct page *, struct dnode_of_data *, block_t *,
1318 struct f2fs_io_info *);
1319void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001320void recover_data_page(struct f2fs_sb_info *, struct page *,
1321 struct f2fs_summary *, block_t, block_t);
Jaegeuk Kimbfad7c22013-12-16 19:04:05 +09001322void allocate_data_block(struct f2fs_sb_info *, struct page *,
1323 block_t, block_t *, struct f2fs_summary *, int);
Yuan Zhong5514f0a2014-01-10 07:26:14 +00001324void f2fs_wait_on_page_writeback(struct page *, enum page_type);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001325void write_data_summaries(struct f2fs_sb_info *, block_t);
1326void write_node_summaries(struct f2fs_sb_info *, block_t);
1327int lookup_journal_in_cursum(struct f2fs_summary_block *,
1328 int, unsigned int, int);
Jaegeuk Kim4b2fecc2014-09-20 22:06:39 -07001329void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001330int build_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001331void destroy_segment_manager(struct f2fs_sb_info *);
Jaegeuk Kim7fd9e542013-11-15 13:55:58 +09001332int __init create_segment_manager_caches(void);
1333void destroy_segment_manager_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001334
1335/*
1336 * checkpoint.c
1337 */
1338struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
1339struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
Jaegeuk Kim4c521f492014-09-11 13:49:55 -07001340struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t);
1341int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001342long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001343void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
1344void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
Jaegeuk Kim6f12ac22014-08-19 09:48:22 -07001345void release_dirty_inode(struct f2fs_sb_info *);
Jaegeuk Kimfff04f92014-07-25 07:40:59 -07001346bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
Jaegeuk Kimcbd56e72013-07-30 11:36:53 +09001347int acquire_orphan_inode(struct f2fs_sb_info *);
1348void release_orphan_inode(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001349void add_orphan_inode(struct f2fs_sb_info *, nid_t);
1350void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
Chao Yu8f99a942013-11-28 15:43:43 +08001351void recover_orphan_inodes(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001352int get_valid_checkpoint(struct f2fs_sb_info *);
Jaegeuk Kima7ffdbe2014-09-12 15:53:45 -07001353void update_dirty_page(struct inode *, struct page *);
Jaegeuk Kim5deb8262013-06-05 17:42:45 +09001354void add_dirty_dir_inode(struct inode *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001355void remove_dirty_dir_inode(struct inode *);
1356void sync_dirty_dir_inodes(struct f2fs_sb_info *);
Jaegeuk Kim75ab4cb2014-09-20 21:57:51 -07001357void write_checkpoint(struct f2fs_sb_info *, struct cp_control *);
Jaegeuk Kim6451e042014-07-25 15:47:17 -07001358void init_ino_entry_info(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001359int __init create_checkpoint_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001360void destroy_checkpoint_caches(void);
1361
1362/*
1363 * data.c
1364 */
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001365void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int);
Jaegeuk Kim93dfe2a2013-11-30 12:51:14 +09001366int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int);
1367void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t,
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001368 struct f2fs_io_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001369int reserve_new_block(struct dnode_of_data *);
Huajun Lib6009652013-11-10 23:13:18 +08001370int f2fs_reserve_block(struct dnode_of_data *, pgoff_t);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001371void update_extent_cache(block_t, struct dnode_of_data *);
Jaegeuk Kimc718379b2013-04-24 13:19:56 +09001372struct page *find_data_page(struct inode *, pgoff_t, bool);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001373struct page *get_lock_data_page(struct inode *, pgoff_t);
Jaegeuk Kim64aa7ed2013-05-20 09:55:50 +09001374struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool);
Jaegeuk Kim458e6192013-12-11 13:54:01 +09001375int do_write_data_page(struct page *, struct f2fs_io_info *);
Jaegeuk Kim9ab70132014-06-08 04:30:14 +09001376int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001377
1378/*
1379 * gc.c
1380 */
1381int start_gc_thread(struct f2fs_sb_info *);
1382void stop_gc_thread(struct f2fs_sb_info *);
Jaegeuk Kimde936532013-08-12 21:08:03 +09001383block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
Jaegeuk Kim408e9372013-01-03 17:55:52 +09001384int f2fs_gc(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001385void build_gc_manager(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001386int __init create_gc_caches(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001387void destroy_gc_caches(void);
1388
1389/*
1390 * recovery.c
1391 */
Jaegeuk Kim6ead1142013-03-20 19:01:06 +09001392int recover_fsync_data(struct f2fs_sb_info *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001393bool space_for_roll_forward(struct f2fs_sb_info *);
1394
1395/*
1396 * debug.c
1397 */
1398#ifdef CONFIG_F2FS_STAT_FS
1399struct f2fs_stat_info {
1400 struct list_head stat_list;
1401 struct f2fs_sb_info *sbi;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001402 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
1403 int main_area_segs, main_area_sections, main_area_zones;
1404 int hit_ext, total_ext;
1405 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
1406 int nats, sits, fnids;
1407 int total_count, utilization;
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001408 int bg_gc, inline_inode;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001409 unsigned int valid_count, valid_node_count, valid_inode_count;
1410 unsigned int bimodal, avg_vblocks;
1411 int util_free, util_valid, util_invalid;
1412 int rsvd_segs, overp_segs;
1413 int dirty_count, node_pages, meta_pages;
Changman Lee942e0be2014-02-13 15:12:29 +09001414 int prefree_count, call_count, cp_count;
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001415 int tot_segs, node_segs, data_segs, free_segs, free_secs;
1416 int tot_blks, data_blks, node_blks;
1417 int curseg[NR_CURSEG_TYPE];
1418 int cursec[NR_CURSEG_TYPE];
1419 int curzone[NR_CURSEG_TYPE];
1420
1421 unsigned int segment_count[2];
1422 unsigned int block_count[2];
1423 unsigned base_mem, cache_mem;
1424};
1425
Gu Zheng963d4f72013-07-12 14:47:11 +08001426static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
1427{
Chris Fries6c311ec2014-01-17 14:44:39 -06001428 return (struct f2fs_stat_info *)sbi->stat_info;
Gu Zheng963d4f72013-07-12 14:47:11 +08001429}
1430
Changman Lee942e0be2014-02-13 15:12:29 +09001431#define stat_inc_cp_count(si) ((si)->cp_count++)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001432#define stat_inc_call_count(si) ((si)->call_count++)
1433#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
1434#define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++)
1435#define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--)
1436#define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++)
1437#define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001438#define stat_inc_inline_inode(inode) \
1439 do { \
1440 if (f2fs_has_inline_data(inode)) \
Jaegeuk Kim40813632014-09-02 15:31:18 -07001441 ((F2FS_I_SB(inode))->inline_inode++); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001442 } while (0)
1443#define stat_dec_inline_inode(inode) \
1444 do { \
1445 if (f2fs_has_inline_data(inode)) \
Jaegeuk Kim40813632014-09-02 15:31:18 -07001446 ((F2FS_I_SB(inode))->inline_inode--); \
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001447 } while (0)
1448
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001449#define stat_inc_seg_type(sbi, curseg) \
1450 ((sbi)->segment_count[(curseg)->alloc_type]++)
1451#define stat_inc_block_count(sbi, curseg) \
1452 ((sbi)->block_count[(curseg)->alloc_type]++)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001453
1454#define stat_inc_seg_count(sbi, type) \
1455 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001456 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001457 (si)->tot_segs++; \
1458 if (type == SUM_TYPE_DATA) \
1459 si->data_segs++; \
1460 else \
1461 si->node_segs++; \
1462 } while (0)
1463
1464#define stat_inc_tot_blk_count(si, blks) \
1465 (si->tot_blks += (blks))
1466
1467#define stat_inc_data_blk_count(sbi, blks) \
1468 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001469 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001470 stat_inc_tot_blk_count(si, blks); \
1471 si->data_blks += (blks); \
1472 } while (0)
1473
1474#define stat_inc_node_blk_count(sbi, blks) \
1475 do { \
Gu Zheng963d4f72013-07-12 14:47:11 +08001476 struct f2fs_stat_info *si = F2FS_STAT(sbi); \
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001477 stat_inc_tot_blk_count(si, blks); \
1478 si->node_blks += (blks); \
1479 } while (0)
1480
1481int f2fs_build_stats(struct f2fs_sb_info *);
1482void f2fs_destroy_stats(struct f2fs_sb_info *);
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001483void __init f2fs_create_root_stats(void);
Namjae Jeon4589d252013-01-15 19:58:47 +09001484void f2fs_destroy_root_stats(void);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001485#else
Changman Lee942e0be2014-02-13 15:12:29 +09001486#define stat_inc_cp_count(si)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001487#define stat_inc_call_count(si)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001488#define stat_inc_bggc_count(si)
1489#define stat_inc_dirty_dir(sbi)
1490#define stat_dec_dirty_dir(sbi)
1491#define stat_inc_total_hit(sb)
1492#define stat_inc_read_hit(sb)
Jaegeuk Kim0dbdc2a2013-11-26 11:08:57 +09001493#define stat_inc_inline_inode(inode)
1494#define stat_dec_inline_inode(inode)
Jaegeuk Kimdcdfff62013-10-22 20:56:10 +09001495#define stat_inc_seg_type(sbi, curseg)
1496#define stat_inc_block_count(sbi, curseg)
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001497#define stat_inc_seg_count(si, type)
1498#define stat_inc_tot_blk_count(si, blks)
1499#define stat_inc_data_blk_count(si, blks)
1500#define stat_inc_node_blk_count(sbi, blks)
1501
1502static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
1503static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
Namjae Jeon6e6093a2013-01-17 00:08:30 +09001504static inline void __init f2fs_create_root_stats(void) { }
Namjae Jeon4589d252013-01-15 19:58:47 +09001505static inline void f2fs_destroy_root_stats(void) { }
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001506#endif
1507
1508extern const struct file_operations f2fs_dir_operations;
1509extern const struct file_operations f2fs_file_operations;
1510extern const struct inode_operations f2fs_file_inode_operations;
1511extern const struct address_space_operations f2fs_dblock_aops;
1512extern const struct address_space_operations f2fs_node_aops;
1513extern const struct address_space_operations f2fs_meta_aops;
1514extern const struct inode_operations f2fs_dir_inode_operations;
1515extern const struct inode_operations f2fs_symlink_inode_operations;
1516extern const struct inode_operations f2fs_special_inode_operations;
Huajun Li1001b342013-11-10 23:13:16 +08001517
Huajun Lie18c65b2013-11-10 23:13:19 +08001518/*
1519 * inline.c
1520 */
Huajun Lie18c65b2013-11-10 23:13:19 +08001521bool f2fs_may_inline(struct inode *);
1522int f2fs_read_inline_data(struct inode *, struct page *);
Jaegeuk Kimb067ba12014-08-07 16:32:25 -07001523int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *);
Huajun Lie18c65b2013-11-10 23:13:19 +08001524int f2fs_write_inline_data(struct inode *, struct page *, unsigned int);
Chao Yu8aa6f1c2014-04-29 09:03:03 +08001525void truncate_inline_data(struct inode *, u64);
Jaegeuk Kim0342fd32014-08-07 16:57:17 -07001526bool recover_inline_data(struct inode *, struct page *);
Jaegeuk Kim39a53e02012-11-28 13:37:31 +09001527#endif