f2fs.h 99.8 KB
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/*
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 * fs/f2fs/f2fs.h
 *
 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
 *             http://www.samsung.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef _LINUX_F2FS_H
#define _LINUX_F2FS_H

#include <linux/types.h>
#include <linux/page-flags.h>
#include <linux/buffer_head.h>
#include <linux/slab.h>
#include <linux/crc32.h>
#include <linux/magic.h>
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#include <linux/kobject.h>
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#include <linux/sched.h>
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#include <linux/cred.h>
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#include <linux/vmalloc.h>
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#include <linux/bio.h>
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#include <linux/blkdev.h>
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#include <linux/quotaops.h>
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#include <crypto/hash.h>
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#define __FS_HAS_ENCRYPTION IS_ENABLED(CONFIG_F2FS_FS_ENCRYPTION)
#include <linux/fscrypt.h>

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#ifdef CONFIG_F2FS_CHECK_FS
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#define f2fs_bug_on(sbi, condition)	BUG_ON(condition)
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#else
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#define f2fs_bug_on(sbi, condition)					\
	do {								\
		if (unlikely(condition)) {				\
			WARN_ON(1);					\
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			set_sbi_flag(sbi, SBI_NEED_FSCK);		\
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		}							\
	} while (0)
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#endif

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#ifdef CONFIG_F2FS_FAULT_INJECTION
enum {
	FAULT_KMALLOC,
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	FAULT_KVMALLOC,
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	FAULT_PAGE_ALLOC,
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	FAULT_PAGE_GET,
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	FAULT_ALLOC_BIO,
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	FAULT_ALLOC_NID,
	FAULT_ORPHAN,
	FAULT_BLOCK,
	FAULT_DIR_DEPTH,
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	FAULT_EVICT_INODE,
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	FAULT_TRUNCATE,
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	FAULT_IO,
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	FAULT_CHECKPOINT,
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	FAULT_MAX,
};

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struct f2fs_fault_info {
	atomic_t inject_ops;
	unsigned int inject_rate;
	unsigned int inject_type;
};

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extern char *fault_name[FAULT_MAX];
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#define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
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#endif

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/*
 * For mount options
 */
#define F2FS_MOUNT_BG_GC		0x00000001
#define F2FS_MOUNT_DISABLE_ROLL_FORWARD	0x00000002
#define F2FS_MOUNT_DISCARD		0x00000004
#define F2FS_MOUNT_NOHEAP		0x00000008
#define F2FS_MOUNT_XATTR_USER		0x00000010
#define F2FS_MOUNT_POSIX_ACL		0x00000020
#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY	0x00000040
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#define F2FS_MOUNT_INLINE_XATTR		0x00000080
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#define F2FS_MOUNT_INLINE_DATA		0x00000100
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#define F2FS_MOUNT_INLINE_DENTRY	0x00000200
#define F2FS_MOUNT_FLUSH_MERGE		0x00000400
#define F2FS_MOUNT_NOBARRIER		0x00000800
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#define F2FS_MOUNT_FASTBOOT		0x00001000
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#define F2FS_MOUNT_EXTENT_CACHE		0x00002000
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#define F2FS_MOUNT_FORCE_FG_GC		0x00004000
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#define F2FS_MOUNT_DATA_FLUSH		0x00008000
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#define F2FS_MOUNT_FAULT_INJECTION	0x00010000
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#define F2FS_MOUNT_ADAPTIVE		0x00020000
#define F2FS_MOUNT_LFS			0x00040000
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#define F2FS_MOUNT_USRQUOTA		0x00080000
#define F2FS_MOUNT_GRPQUOTA		0x00100000
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#define F2FS_MOUNT_PRJQUOTA		0x00200000
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#define F2FS_MOUNT_QUOTA		0x00400000
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#define F2FS_MOUNT_INLINE_XATTR_SIZE	0x00800000
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#define F2FS_MOUNT_RESERVE_ROOT		0x01000000
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#define clear_opt(sbi, option)	((sbi)->mount_opt.opt &= ~F2FS_MOUNT_##option)
#define set_opt(sbi, option)	((sbi)->mount_opt.opt |= F2FS_MOUNT_##option)
#define test_opt(sbi, option)	((sbi)->mount_opt.opt & F2FS_MOUNT_##option)
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#define ver_after(a, b)	(typecheck(unsigned long long, a) &&		\
		typecheck(unsigned long long, b) &&			\
		((long long)((a) - (b)) > 0))

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typedef u32 block_t;	/*
			 * should not change u32, since it is the on-disk block
			 * address format, __le32.
			 */
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typedef u32 nid_t;

struct f2fs_mount_info {
	unsigned int	opt;
};

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#define F2FS_FEATURE_ENCRYPT		0x0001
#define F2FS_FEATURE_BLKZONED		0x0002
#define F2FS_FEATURE_ATOMIC_WRITE	0x0004
#define F2FS_FEATURE_EXTRA_ATTR		0x0008
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#define F2FS_FEATURE_PRJQUOTA		0x0010
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#define F2FS_FEATURE_INODE_CHKSUM	0x0020
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#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR	0x0040
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#define F2FS_FEATURE_QUOTA_INO		0x0080
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#define F2FS_FEATURE_INODE_CRTIME	0x0100
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#define F2FS_HAS_FEATURE(sb, mask)					\
	((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0)
#define F2FS_SET_FEATURE(sb, mask)					\
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	(F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask))
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#define F2FS_CLEAR_FEATURE(sb, mask)					\
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	(F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask))
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/*
 * Default values for user and/or group using reserved blocks
 */
#define	F2FS_DEF_RESUID		0
#define	F2FS_DEF_RESGID		0

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/*
 * For checkpoint manager
 */
enum {
	NAT_BITMAP,
	SIT_BITMAP
};

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#define	CP_UMOUNT	0x00000001
#define	CP_FASTBOOT	0x00000002
#define	CP_SYNC		0x00000004
#define	CP_RECOVERY	0x00000008
#define	CP_DISCARD	0x00000010
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#define CP_TRIMMED	0x00000020
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#define DEF_BATCHED_TRIM_SECTIONS	2048
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#define BATCHED_TRIM_SEGMENTS(sbi)	\
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		(GET_SEG_FROM_SEC(sbi, SM_I(sbi)->trim_sections))
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#define BATCHED_TRIM_BLOCKS(sbi)	\
		(BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
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#define MAX_DISCARD_BLOCKS(sbi)		BLKS_PER_SEC(sbi)
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#define DEF_MAX_DISCARD_REQUEST		8	/* issue 8 discards per round */
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#define DEF_MIN_DISCARD_ISSUE_TIME	50	/* 50 ms, if exists */
#define DEF_MAX_DISCARD_ISSUE_TIME	60000	/* 60 s, if no candidates */
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#define DEF_CP_INTERVAL			60	/* 60 secs */
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#define DEF_IDLE_INTERVAL		5	/* 5 secs */
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struct cp_control {
	int reason;
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	__u64 trim_start;
	__u64 trim_end;
	__u64 trim_minlen;
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};

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/*
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 * For CP/NAT/SIT/SSA readahead
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 */
enum {
	META_CP,
	META_NAT,
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	META_SIT,
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	META_SSA,
	META_POR,
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};

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/* for the list of ino */
enum {
	ORPHAN_INO,		/* for orphan ino list */
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	APPEND_INO,		/* for append ino list */
	UPDATE_INO,		/* for update ino list */
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	TRANS_DIR_INO,		/* for trasactions dir ino list */
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	FLUSH_INO,		/* for multiple device flushing */
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	MAX_INO_ENTRY,		/* max. list */
};

struct ino_entry {
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	struct list_head list;		/* list head */
	nid_t ino;			/* inode number */
	unsigned int dirty_device;	/* dirty device bitmap */
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};

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/* for the list of inodes to be GCed */
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struct inode_entry {
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	struct list_head list;	/* list head */
	struct inode *inode;	/* vfs inode pointer */
};

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/* for the bitmap indicate blocks to be discarded */
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struct discard_entry {
	struct list_head list;	/* list head */
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	block_t start_blkaddr;	/* start blockaddr of current segment */
	unsigned char discard_map[SIT_VBLOCK_MAP_SIZE];	/* segment discard bitmap */
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};

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/* default discard granularity of inner discard thread, unit: block count */
#define DEFAULT_DISCARD_GRANULARITY		16

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/* max discard pend list number */
#define MAX_PLIST_NUM		512
#define plist_idx(blk_num)	((blk_num) >= MAX_PLIST_NUM ?		\
					(MAX_PLIST_NUM - 1) : (blk_num - 1))

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enum {
	D_PREP,
	D_SUBMIT,
	D_DONE,
};

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struct discard_info {
	block_t lstart;			/* logical start address */
	block_t len;			/* length */
	block_t start;			/* actual start address in dev */
};

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struct discard_cmd {
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	struct rb_node rb_node;		/* rb node located in rb-tree */
	union {
		struct {
			block_t lstart;	/* logical start address */
			block_t len;	/* length */
			block_t start;	/* actual start address in dev */
		};
		struct discard_info di;	/* discard info */

	};
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	struct list_head list;		/* command list */
	struct completion wait;		/* compleation */
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	struct block_device *bdev;	/* bdev */
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	unsigned short ref;		/* reference count */
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	unsigned char state;		/* state */
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	int error;			/* bio error */
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};

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enum {
	DPOLICY_BG,
	DPOLICY_FORCE,
	DPOLICY_FSTRIM,
	DPOLICY_UMOUNT,
	MAX_DPOLICY,
};

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struct discard_policy {
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	int type;			/* type of discard */
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	unsigned int min_interval;	/* used for candidates exist */
	unsigned int max_interval;	/* used for candidates not exist */
	unsigned int max_requests;	/* # of discards issued per round */
	unsigned int io_aware_gran;	/* minimum granularity discard not be aware of I/O */
	bool io_aware;			/* issue discard in idle time */
	bool sync;			/* submit discard with REQ_SYNC flag */
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	unsigned int granularity;	/* discard granularity */
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};

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struct discard_cmd_control {
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	struct task_struct *f2fs_issue_discard;	/* discard thread */
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	struct list_head entry_list;		/* 4KB discard entry list */
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	struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
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	struct list_head wait_list;		/* store on-flushing entries */
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	struct list_head fstrim_list;		/* in-flight discard from fstrim */
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	wait_queue_head_t discard_wait_queue;	/* waiting queue for wake-up */
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	unsigned int discard_wake;		/* to wake up discard thread */
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	struct mutex cmd_lock;
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	unsigned int nr_discards;		/* # of discards in the list */
	unsigned int max_discards;		/* max. discards to be issued */
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	unsigned int discard_granularity;	/* discard granularity */
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	unsigned int undiscard_blks;		/* # of undiscard blocks */
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	atomic_t issued_discard;		/* # of issued discard */
	atomic_t issing_discard;		/* # of issing discard */
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	atomic_t discard_cmd_cnt;		/* # of cached cmd count */
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	struct rb_root root;			/* root of discard rb-tree */
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};

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/* for the list of fsync inodes, used only during recovery */
struct fsync_inode_entry {
	struct list_head list;	/* list head */
	struct inode *inode;	/* vfs inode pointer */
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	block_t blkaddr;	/* block address locating the last fsync */
	block_t last_dentry;	/* block address locating the last dentry */
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};

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#define nats_in_cursum(jnl)		(le16_to_cpu((jnl)->n_nats))
#define sits_in_cursum(jnl)		(le16_to_cpu((jnl)->n_sits))
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#define nat_in_journal(jnl, i)		((jnl)->nat_j.entries[i].ne)
#define nid_in_journal(jnl, i)		((jnl)->nat_j.entries[i].nid)
#define sit_in_journal(jnl, i)		((jnl)->sit_j.entries[i].se)
#define segno_in_journal(jnl, i)	((jnl)->sit_j.entries[i].segno)
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#define MAX_NAT_JENTRIES(jnl)	(NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
#define MAX_SIT_JENTRIES(jnl)	(SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
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static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
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{
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	int before = nats_in_cursum(journal);
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	journal->n_nats = cpu_to_le16(before + i);
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	return before;
}

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static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
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{
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	int before = sits_in_cursum(journal);
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	journal->n_sits = cpu_to_le16(before + i);
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	return before;
}

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static inline bool __has_cursum_space(struct f2fs_journal *journal,
							int size, int type)
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{
	if (type == NAT_JOURNAL)
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		return size <= MAX_NAT_JENTRIES(journal);
	return size <= MAX_SIT_JENTRIES(journal);
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}

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/*
 * ioctl commands
 */
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#define F2FS_IOC_GETFLAGS		FS_IOC_GETFLAGS
#define F2FS_IOC_SETFLAGS		FS_IOC_SETFLAGS
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#define F2FS_IOC_GETVERSION		FS_IOC_GETVERSION
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#define F2FS_IOCTL_MAGIC		0xf5
#define F2FS_IOC_START_ATOMIC_WRITE	_IO(F2FS_IOCTL_MAGIC, 1)
#define F2FS_IOC_COMMIT_ATOMIC_WRITE	_IO(F2FS_IOCTL_MAGIC, 2)
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#define F2FS_IOC_START_VOLATILE_WRITE	_IO(F2FS_IOCTL_MAGIC, 3)
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#define F2FS_IOC_RELEASE_VOLATILE_WRITE	_IO(F2FS_IOCTL_MAGIC, 4)
#define F2FS_IOC_ABORT_VOLATILE_WRITE	_IO(F2FS_IOCTL_MAGIC, 5)
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#define F2FS_IOC_GARBAGE_COLLECT	_IOW(F2FS_IOCTL_MAGIC, 6, __u32)
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#define F2FS_IOC_WRITE_CHECKPOINT	_IO(F2FS_IOCTL_MAGIC, 7)
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#define F2FS_IOC_DEFRAGMENT		_IOWR(F2FS_IOCTL_MAGIC, 8,	\
						struct f2fs_defragment)
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#define F2FS_IOC_MOVE_RANGE		_IOWR(F2FS_IOCTL_MAGIC, 9,	\
						struct f2fs_move_range)
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#define F2FS_IOC_FLUSH_DEVICE		_IOW(F2FS_IOCTL_MAGIC, 10,	\
						struct f2fs_flush_device)
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#define F2FS_IOC_GARBAGE_COLLECT_RANGE	_IOW(F2FS_IOCTL_MAGIC, 11,	\
						struct f2fs_gc_range)
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#define F2FS_IOC_GET_FEATURES		_IOR(F2FS_IOCTL_MAGIC, 12, __u32)
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#define F2FS_IOC_SET_PIN_FILE		_IOW(F2FS_IOCTL_MAGIC, 13, __u32)
#define F2FS_IOC_GET_PIN_FILE		_IOR(F2FS_IOCTL_MAGIC, 14, __u32)
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#define F2FS_IOC_PRECACHE_EXTENTS	_IO(F2FS_IOCTL_MAGIC, 15)
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#define F2FS_IOC_SET_ENCRYPTION_POLICY	FS_IOC_SET_ENCRYPTION_POLICY
#define F2FS_IOC_GET_ENCRYPTION_POLICY	FS_IOC_GET_ENCRYPTION_POLICY
#define F2FS_IOC_GET_ENCRYPTION_PWSALT	FS_IOC_GET_ENCRYPTION_PWSALT
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/*
 * should be same as XFS_IOC_GOINGDOWN.
 * Flags for going down operation used by FS_IOC_GOINGDOWN
 */
#define F2FS_IOC_SHUTDOWN	_IOR('X', 125, __u32)	/* Shutdown */
#define F2FS_GOING_DOWN_FULLSYNC	0x0	/* going down with full sync */
#define F2FS_GOING_DOWN_METASYNC	0x1	/* going down with metadata */
#define F2FS_GOING_DOWN_NOSYNC		0x2	/* going down */
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#define F2FS_GOING_DOWN_METAFLUSH	0x3	/* going down with meta flush */
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#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
/*
 * ioctl commands in 32 bit emulation
 */
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#define F2FS_IOC32_GETFLAGS		FS_IOC32_GETFLAGS
#define F2FS_IOC32_SETFLAGS		FS_IOC32_SETFLAGS
#define F2FS_IOC32_GETVERSION		FS_IOC32_GETVERSION
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#endif

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#define F2FS_IOC_FSGETXATTR		FS_IOC_FSGETXATTR
#define F2FS_IOC_FSSETXATTR		FS_IOC_FSSETXATTR

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struct f2fs_gc_range {
	u32 sync;
	u64 start;
	u64 len;
};

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struct f2fs_defragment {
	u64 start;
	u64 len;
};

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struct f2fs_move_range {
	u32 dst_fd;		/* destination fd */
	u64 pos_in;		/* start position in src_fd */
	u64 pos_out;		/* start position in dst_fd */
	u64 len;		/* size to move */
};

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struct f2fs_flush_device {
	u32 dev_num;		/* device number to flush */
	u32 segments;		/* # of segments to flush */
};

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/* for inline stuff */
#define DEF_INLINE_RESERVED_SIZE	1
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#define DEF_MIN_INLINE_SIZE		1
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static inline int get_extra_isize(struct inode *inode);
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static inline int get_inline_xattr_addrs(struct inode *inode);
#define MAX_INLINE_DATA(inode)	(sizeof(__le32) *			\
				(CUR_ADDRS_PER_INODE(inode) -		\
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				get_inline_xattr_addrs(inode) -	\
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				DEF_INLINE_RESERVED_SIZE))
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/* for inline dir */
#define NR_INLINE_DENTRY(inode)	(MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
				BITS_PER_BYTE + 1))
#define INLINE_DENTRY_BITMAP_SIZE(inode)	((NR_INLINE_DENTRY(inode) + \
					BITS_PER_BYTE - 1) / BITS_PER_BYTE)
#define INLINE_RESERVED_SIZE(inode)	(MAX_INLINE_DATA(inode) - \
				((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
				NR_INLINE_DENTRY(inode) + \
				INLINE_DENTRY_BITMAP_SIZE(inode)))

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/*
 * For INODE and NODE manager
 */
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/* for directory operations */
struct f2fs_dentry_ptr {
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	struct inode *inode;
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	void *bitmap;
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	struct f2fs_dir_entry *dentry;
	__u8 (*filename)[F2FS_SLOT_LEN];
	int max;
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	int nr_bitmap;
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};

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static inline void make_dentry_ptr_block(struct inode *inode,
		struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
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{
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	d->inode = inode;
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	d->max = NR_DENTRY_IN_BLOCK;
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	d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
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	d->bitmap = &t->dentry_bitmap;
	d->dentry = t->dentry;
	d->filename = t->filename;
}
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static inline void make_dentry_ptr_inline(struct inode *inode,
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					struct f2fs_dentry_ptr *d, void *t)
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{
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	int entry_cnt = NR_INLINE_DENTRY(inode);
	int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
	int reserved_size = INLINE_RESERVED_SIZE(inode);

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	d->inode = inode;
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	d->max = entry_cnt;
	d->nr_bitmap = bitmap_size;
	d->bitmap = t;
	d->dentry = t + bitmap_size + reserved_size;
	d->filename = t + bitmap_size + reserved_size +
					SIZE_OF_DIR_ENTRY * entry_cnt;
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}

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/*
 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
 * as its node offset to distinguish from index node blocks.
 * But some bits are used to mark the node block.
 */
#define XATTR_NODE_OFFSET	((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
				>> OFFSET_BIT_SHIFT)
481 482 483 484 485
enum {
	ALLOC_NODE,			/* allocate a new node page if needed */
	LOOKUP_NODE,			/* look up a node without readahead */
	LOOKUP_NODE_RA,			/*
					 * look up a node with readahead called
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					 * by get_data_block.
487
					 */
488 489
};

490
#define F2FS_LINK_MAX	0xffffffff	/* maximum link count per file */
491

492 493
#define MAX_DIR_RA_PAGES	4	/* maximum ra pages of dir */

494 495 496
/* vector size for gang look-up from extent cache that consists of radix tree */
#define EXT_TREE_VEC_SIZE	64

497
/* for in-memory extent cache entry */
498 499 500 501
#define F2FS_MIN_EXTENT_LEN	64	/* minimum extent length */

/* number of extent info in extent cache we try to shrink */
#define EXTENT_CACHE_SHRINK_NUMBER	128
502

503 504 505 506 507 508
struct rb_entry {
	struct rb_node rb_node;		/* rb node located in rb-tree */
	unsigned int ofs;		/* start offset of the entry */
	unsigned int len;		/* length of the entry */
};

509
struct extent_info {
510 511
	unsigned int fofs;		/* start offset in a file */
	unsigned int len;		/* length of the extent */
512
	u32 blk;			/* start block address of the extent */
513 514 515
};

struct extent_node {
516 517 518 519 520 521 522 523 524 525
	struct rb_node rb_node;
	union {
		struct {
			unsigned int fofs;
			unsigned int len;
			u32 blk;
		};
		struct extent_info ei;	/* extent info */

	};
526
	struct list_head list;		/* node in global extent list of sbi */
527
	struct extent_tree *et;		/* extent tree pointer */
528 529 530 531 532
};

struct extent_tree {
	nid_t ino;			/* inode number */
	struct rb_root root;		/* root of extent info rb-tree */
533
	struct extent_node *cached_en;	/* recently accessed extent node */
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	struct extent_info largest;	/* largested extent info */
535
	struct list_head list;		/* to be used by sbi->zombie_list */
536
	rwlock_t lock;			/* protect extent info rb-tree */
537
	atomic_t node_cnt;		/* # of extent node in rb-tree*/
538 539
};

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/*
 * This structure is taken from ext4_map_blocks.
 *
 * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
 */
#define F2FS_MAP_NEW		(1 << BH_New)
#define F2FS_MAP_MAPPED		(1 << BH_Mapped)
547 548 549
#define F2FS_MAP_UNWRITTEN	(1 << BH_Unwritten)
#define F2FS_MAP_FLAGS		(F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
				F2FS_MAP_UNWRITTEN)
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struct f2fs_map_blocks {
	block_t m_pblk;
	block_t m_lblk;
	unsigned int m_len;
	unsigned int m_flags;
556
	pgoff_t *m_next_pgofs;		/* point next possible non-hole pgofs */
557
	pgoff_t *m_next_extent;		/* point to next possible extent */
558
	int m_seg_type;
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};

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/* for flag in get_data_block */
562 563 564 565 566 567
enum {
	F2FS_GET_BLOCK_DEFAULT,
	F2FS_GET_BLOCK_FIEMAP,
	F2FS_GET_BLOCK_BMAP,
	F2FS_GET_BLOCK_PRE_DIO,
	F2FS_GET_BLOCK_PRE_AIO,
568
	F2FS_GET_BLOCK_PRECACHE,
569
};
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/*
 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
 */
#define FADVISE_COLD_BIT	0x01
575
#define FADVISE_LOST_PINO_BIT	0x02
576
#define FADVISE_ENCRYPT_BIT	0x04
577
#define FADVISE_ENC_NAME_BIT	0x08
578
#define FADVISE_KEEP_SIZE_BIT	0x10
579

580 581 582 583 584 585
#define file_is_cold(inode)	is_file(inode, FADVISE_COLD_BIT)
#define file_wrong_pino(inode)	is_file(inode, FADVISE_LOST_PINO_BIT)
#define file_set_cold(inode)	set_file(inode, FADVISE_COLD_BIT)
#define file_lost_pino(inode)	set_file(inode, FADVISE_LOST_PINO_BIT)
#define file_clear_cold(inode)	clear_file(inode, FADVISE_COLD_BIT)
#define file_got_pino(inode)	clear_file(inode, FADVISE_LOST_PINO_BIT)
586 587 588
#define file_is_encrypt(inode)	is_file(inode, FADVISE_ENCRYPT_BIT)
#define file_set_encrypt(inode)	set_file(inode, FADVISE_ENCRYPT_BIT)
#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
589 590
#define file_enc_name(inode)	is_file(inode, FADVISE_ENC_NAME_BIT)
#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
591 592
#define file_keep_isize(inode)	is_file(inode, FADVISE_KEEP_SIZE_BIT)
#define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
593

594 595
#define DEF_DIR_LEVEL		0

596 597 598 599
struct f2fs_inode_info {
	struct inode vfs_inode;		/* serve a vfs inode */
	unsigned long i_flags;		/* keep an inode flags for ioctl */
	unsigned char i_advise;		/* use to give file attribute hints */
600
	unsigned char i_dir_level;	/* use for dentry level for large dir */
601 602 603 604
	union {
		unsigned int i_current_depth;	/* only for directory depth */
		unsigned short i_gc_failures;	/* only for regular file */
	};
605
	unsigned int i_pino;		/* parent inode number */
606 607 608 609
	umode_t i_acl_mode;		/* keep file acl mode temporarily */

	/* Use below internally in f2fs*/
	unsigned long flags;		/* use to pass per-file flags */
610
	struct rw_semaphore i_sem;	/* protect fi info */
611
	atomic_t dirty_pages;		/* # of dirty pages */
612 613
	f2fs_hash_t chash;		/* hash value of given file name */
	unsigned int clevel;		/* maximum level of given file name */
614
	struct task_struct *task;	/* lookup and create consistency */
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	struct task_struct *cp_task;	/* separate cp/wb IO stats*/
616
	nid_t i_xattr_nid;		/* node id that contains xattrs */
617
	loff_t	last_disk_size;		/* lastly written file size */
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#ifdef CONFIG_QUOTA
	struct dquot *i_dquot[MAXQUOTAS];

	/* quota space reservation, managed internally by quota code */
	qsize_t i_reserved_quota;
#endif
625 626
	struct list_head dirty_list;	/* dirty list for dirs and files */
	struct list_head gdirty_list;	/* linked in global dirty list */
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	struct list_head inmem_ilist;	/* list for inmem inodes */
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	struct list_head inmem_pages;	/* inmemory pages managed by f2fs */
629
	struct task_struct *inmem_task;	/* store inmemory task */
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	struct mutex inmem_lock;	/* lock for inmemory pages */
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	struct extent_tree *extent_tree;	/* cached extent_tree entry */
632
	struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
633
	struct rw_semaphore i_mmap_sem;
634
	struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
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636
	int i_extra_isize;		/* size of extra space located in i_addr */
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	kprojid_t i_projid;		/* id for project quota */
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	int i_inline_xattr_size;	/* inline xattr size */
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	struct timespec i_crtime;	/* inode creation time */
640 641 642
};

static inline void get_extent_info(struct extent_info *ext,
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					struct f2fs_extent *i_ext)
644
{
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	ext->fofs = le32_to_cpu(i_ext->fofs);
	ext->blk = le32_to_cpu(i_ext->blk);
	ext->len = le32_to_cpu(i_ext->len);
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}

static inline void set_raw_extent(struct extent_info *ext,
					struct f2fs_extent *i_ext)
{
	i_ext->fofs = cpu_to_le32(ext->fofs);
654
	i_ext->blk = cpu_to_le32(ext->blk);
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	i_ext->len = cpu_to_le32(ext->len);
}

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static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
						u32 blk, unsigned int len)
{
	ei->fofs = fofs;
	ei->blk = blk;
	ei->len = len;
}

666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683
static inline bool __is_discard_mergeable(struct discard_info *back,
						struct discard_info *front)
{
	return back->lstart + back->len == front->lstart;
}

static inline bool __is_discard_back_mergeable(struct discard_info *cur,
						struct discard_info *back)
{
	return __is_discard_mergeable(back, cur);
}

static inline bool __is_discard_front_mergeable(struct discard_info *cur,
						struct discard_info *front)
{
	return __is_discard_mergeable(cur, front);
}

684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702
static inline bool __is_extent_mergeable(struct extent_info *back,
						struct extent_info *front)
{
	return (back->fofs + back->len == front->fofs &&
			back->blk + back->len == front->blk);
}

static inline bool __is_back_mergeable(struct extent_info *cur,
						struct extent_info *back)
{
	return __is_extent_mergeable(back, cur);
}

static inline bool __is_front_mergeable(struct extent_info *cur,
						struct extent_info *front)
{
	return __is_extent_mergeable(cur, front);
}

703
extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
704 705
static inline void __try_update_largest_extent(struct inode *inode,
			struct extent_tree *et, struct extent_node *en)
706
{
707
	if (en->ei.len > et->largest.len) {
708
		et->largest = en->ei;
709
		f2fs_mark_inode_dirty_sync(inode, true);
710
	}
711 712
}

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/*
 * For free nid management
 */
enum nid_state {
	FREE_NID,		/* newly added to free nid list */
	PREALLOC_NID,		/* it is preallocated */
	MAX_NID_STATE,
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};

722 723 724
struct f2fs_nm_info {
	block_t nat_blkaddr;		/* base disk address of NAT */
	nid_t max_nid;			/* maximum possible node ids */
725
	nid_t available_nids;		/* # of available node ids */
726
	nid_t next_scan_nid;		/* the next nid to be scanned */
727
	unsigned int ram_thresh;	/* control the memory footprint */
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	unsigned int ra_nid_pages;	/* # of nid pages to be readaheaded */
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	unsigned int dirty_nats_ratio;	/* control dirty nats ratio threshold */
730 731 732

	/* NAT cache management */
	struct radix_tree_root nat_root;/* root of the nat entry cache */
733
	struct radix_tree_root nat_set_root;/* root of the nat set cache */
734
	struct rw_semaphore nat_tree_lock;	/* protect nat_tree_lock */
735
	struct list_head nat_entries;	/* cached nat entry list (clean) */
736
	unsigned int nat_cnt;		/* the # of cached nat entries */
737
	unsigned int dirty_nat_cnt;	/* total num of nat entries in set */
738
	unsigned int nat_blocks;	/* # of nat blocks */
739 740

	/* free node ids management */
741
	struct radix_tree_root free_nid_root;/* root of the free_nid cache */
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	struct list_head free_nid_list;		/* list for free nids excluding preallocated nids */
	unsigned int nid_cnt[MAX_NID_STATE];	/* the number of free node id */
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	spinlock_t nid_list_lock;	/* protect nid lists ops */
745
	struct mutex build_lock;	/* lock for build free nids */
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	unsigned char (*free_nid_bitmap)[NAT_ENTRY_BITMAP_SIZE];
	unsigned char *nat_block_bitmap;
748
	unsigned short *free_nid_count;	/* free nid count of NAT block */
749 750 751

	/* for checkpoint */
	char *nat_bitmap;		/* NAT bitmap pointer */
752 753 754 755 756

	unsigned int nat_bits_blocks;	/* # of nat bits blocks */
	unsigned char *nat_bits;	/* NAT bits blocks */
	unsigned char *full_nat_bits;	/* full NAT pages */
	unsigned char *empty_nat_bits;	/* empty NAT pages */
757 758 759
#ifdef CONFIG_F2FS_CHECK_FS
	char *nat_bitmap_mir;		/* NAT bitmap mirror */
#endif
760 761 762 763 764 765 766 767 768 769 770 771 772 773 774
	int bitmap_size;		/* bitmap size */
};

/*
 * this structure is used as one of function parameters.
 * all the information are dedicated to a given direct node block determined
 * by the data offset in a file.
 */
struct dnode_of_data {
	struct inode *inode;		/* vfs inode pointer */
	struct page *inode_page;	/* its inode page, NULL is possible */
	struct page *node_page;		/* cached direct node page */
	nid_t nid;			/* node id of the direct node block */
	unsigned int ofs_in_node;	/* data offset in the node page */
	bool inode_page_locked;		/* inode page is locked or not */
775
	bool node_changed;		/* is node block changed */
776 777
	char cur_level;			/* level of hole node page */
	char max_level;			/* level of current page located */
778 779 780 781 782 783
	block_t	data_blkaddr;		/* block address of the node block */
};

static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
		struct page *ipage, struct page *npage, nid_t nid)
{
784
	memset(dn, 0, sizeof(*dn));
785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
	dn->inode = inode;
	dn->inode_page = ipage;
	dn->node_page = npage;
	dn->nid = nid;
}

/*
 * For SIT manager
 *
 * By default, there are 6 active log areas across the whole main area.
 * When considering hot and cold data separation to reduce cleaning overhead,
 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
 * respectively.
 * In the current design, you should not change the numbers intentionally.
 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
 * logs individually according to the underlying devices. (default: 6)
 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
 * data and 8 for node logs.
 */
#define	NR_CURSEG_DATA_TYPE	(3)
#define NR_CURSEG_NODE_TYPE	(3)
#define NR_CURSEG_TYPE	(NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)

enum {
	CURSEG_HOT_DATA	= 0,	/* directory entry blocks */
	CURSEG_WARM_DATA,	/* data blocks */
	CURSEG_COLD_DATA,	/* multimedia or GCed data blocks */
	CURSEG_HOT_NODE,	/* direct node blocks of directory files */
	CURSEG_WARM_NODE,	/* direct node blocks of normal files */
	CURSEG_COLD_NODE,	/* indirect node blocks */
815
	NO_CHECK_TYPE,
816 817
};

818 819
struct flush_cmd {
	struct completion wait;
820
	struct llist_node llnode;
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	nid_t ino;
822 823 824
	int ret;
};

825 826 827
struct flush_cmd_control {
	struct task_struct *f2fs_issue_flush;	/* flush thread */
	wait_queue_head_t flush_wait_queue;	/* waiting queue for wake-up */
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	atomic_t issued_flush;			/* # of issued flushes */
	atomic_t issing_flush;			/* # of issing flushes */
830 831
	struct llist_head issue_list;		/* list for command issue */
	struct llist_node *dispatch_list;	/* list for command dispatch */
832 833
};

834 835 836 837 838 839
struct f2fs_sm_info {
	struct sit_info *sit_info;		/* whole segment information */
	struct free_segmap_info *free_info;	/* free segment information */
	struct dirty_seglist_info *dirty_info;	/* dirty segment information */
	struct curseg_info *curseg_array;	/* active segment information */

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	struct rw_semaphore curseg_lock;	/* for preventing curseg change */

842 843 844 845 846 847 848 849
	block_t seg0_blkaddr;		/* block address of 0'th segment */
	block_t main_blkaddr;		/* start block address of main area */
	block_t ssa_blkaddr;		/* start block address of SSA area */

	unsigned int segment_count;	/* total # of segments */
	unsigned int main_segments;	/* # of segments in main area */
	unsigned int reserved_segments;	/* # of reserved segments */
	unsigned int ovp_segments;	/* # of overprovision segments */
850 851 852

	/* a threshold to reclaim prefree segments */
	unsigned int rec_prefree_segments;
853

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	/* for batched trimming */
	unsigned int trim_sections;		/* # of sections to trim */

857 858
	struct list_head sit_entry_set;	/* sit entry set list */

859 860
	unsigned int ipu_policy;	/* in-place-update policy */
	unsigned int min_ipu_util;	/* in-place-update threshold */
861
	unsigned int min_fsync_blocks;	/* threshold for fsync */
862
	unsigned int min_hot_blocks;	/* threshold for hot block allocation */
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	unsigned int min_ssr_sections;	/* threshold to trigger SSR allocation */
864 865

	/* for flush command control */
866
	struct flush_cmd_control *fcc_info;
867

868 869
	/* for discard command control */
	struct discard_cmd_control *dcc_info;
870 871 872 873 874 875 876 877 878 879 880
};

/*
 * For superblock
 */
/*
 * COUNT_TYPE for monitoring
 *
 * f2fs monitors the number of several block types such as on-writeback,
 * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
 */
881
#define WB_DATA_TYPE(p)	(__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
882 883
enum count_type {
	F2FS_DIRTY_DENTS,
884
	F2FS_DIRTY_DATA,
885
	F2FS_DIRTY_QDATA,
886 887
	F2FS_DIRTY_NODES,
	F2FS_DIRTY_META,
888
	F2FS_INMEM_PAGES,
889
	F2FS_DIRTY_IMETA,
890 891
	F2FS_WB_CP_DATA,
	F2FS_WB_DATA,
892 893 894 895
	NR_COUNT_TYPE,
};

/*
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 * The below are the page types of bios used in submit_bio().
897 898 899 900 901 902 903 904 905
 * The available types are:
 * DATA			User data pages. It operates as async mode.
 * NODE			Node pages. It operates as async mode.
 * META			FS metadata pages such as SIT, NAT, CP.
 * NR_PAGE_TYPE		The number of page types.
 * META_FLUSH		Make sure the previous pages are written
 *			with waiting the bio's completion
 * ...			Only can be used with META.
 */
906
#define PAGE_TYPE_OF_BIO(type)	((type) > META ? META : (type))
907 908 909 910 911 912
enum page_type {
	DATA,
	NODE,
	META,
	NR_PAGE_TYPE,
	META_FLUSH,
913 914
	INMEM,		/* the below types are used by tracepoints only. */
	INMEM_DROP,
915
	INMEM_INVALIDATE,
916
	INMEM_REVOKE,
917 918
	IPU,
	OPU,
919 920
};

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enum temp_type {
	HOT = 0,	/* must be zero for meta bio */
	WARM,
	COLD,
	NR_TEMP_TYPE,
};

928 929 930 931 932 933
enum need_lock_type {
	LOCK_REQ = 0,
	LOCK_DONE,
	LOCK_RETRY,
};

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enum cp_reason_type {
	CP_NO_NEEDED,
	CP_NON_REGULAR,
	CP_HARDLINK,
	CP_SB_NEED_CP,
	CP_WRONG_PINO,
	CP_NO_SPC_ROLL,
	CP_NODE_NEED_CP,
	CP_FASTBOOT_MODE,
	CP_SPEC_LOG_NUM,
944
	CP_RECOVER_DIR,
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};

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enum iostat_type {
	APP_DIRECT_IO,			/* app direct IOs */
	APP_BUFFERED_IO,		/* app buffered IOs */
	APP_WRITE_IO,			/* app write IOs */
	APP_MAPPED_IO,			/* app mapped IOs */
	FS_DATA_IO,			/* data IOs from kworker/fsync/reclaimer */
	FS_NODE_IO,			/* node IOs from kworker/fsync/reclaimer */
	FS_META_IO,			/* meta IOs from kworker/reclaimer */
	FS_GC_DATA_IO,			/* data IOs from forground gc */
	FS_GC_NODE_IO,			/* node IOs from forground gc */
	FS_CP_DATA_IO,			/* data IOs from checkpoint */
	FS_CP_NODE_IO,			/* node IOs from checkpoint */
	FS_CP_META_IO,			/* meta IOs from checkpoint */
	FS_DISCARD,			/* discard */
	NR_IO_TYPE,
};

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struct f2fs_io_info {
965
	struct f2fs_sb_info *sbi;	/* f2fs_sb_info pointer */
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	nid_t ino;		/* inode number */
967
	enum page_type type;	/* contains DATA/NODE/META/META_FLUSH */
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	enum temp_type temp;	/* contains HOT/WARM/COLD */
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	int op;			/* contains REQ_OP_ */
970
	int op_flags;		/* req_flag_bits */
971
	block_t new_blkaddr;	/* new block address to be written */
972
	block_t old_blkaddr;	/* old block address before Cow */
973
	struct page *page;	/* page to be written */
974
	struct page *encrypted_page;	/* encrypted page */
975
	struct list_head list;		/* serialize IOs */
976
	bool submitted;		/* indicate IO submission */
977
	int need_lock;		/* indicate we need to lock cp_rwsem */
978
	bool in_list;		/* indicate fio is in io_list */
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	enum iostat_type io_type;	/* io type */
980
	struct writeback_control *io_wbc; /* writeback control */
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981 982
};

983
#define is_read_io(rw) ((rw) == READ)
984
struct f2fs_bio_info {
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985
	struct f2fs_sb_info *sbi;	/* f2fs superblock */
986 987
	struct bio *bio;		/* bios to merge */
	sector_t last_block_in_bio;	/* last block number */
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988
	struct f2fs_io_info fio;	/* store buffered io info. */
989
	struct rw_semaphore io_rwsem;	/* blocking op for bio */
990 991
	spinlock_t io_lock;		/* serialize DATA/NODE IOs */
	struct list_head io_list;	/* track fios */
992 993
};

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994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
#define FDEV(i)				(sbi->devs[i])
#define RDEV(i)				(raw_super->devs[i])
struct f2fs_dev_info {
	struct block_device *bdev;
	char path[MAX_PATH_LEN];
	unsigned int total_segments;
	block_t start_blk;
	block_t end_blk;
#ifdef CONFIG_BLK_DEV_ZONED
	unsigned int nr_blkz;			/* Total number of zones */
	u8 *blkz_type;				/* Array of zones type */
#endif
};

1008 1009 1010
enum inode_type {
	DIR_INODE,			/* for dirty dir inode */
	FILE_INODE,			/* for dirty regular/symlink inode */
1011
	DIRTY_META,			/* for all dirtied inode metadata */
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1012
	ATOMIC_FILE,			/* for all atomic files */
1013 1014 1015
	NR_INODE_TYPE,
};

1016 1017 1018 1019 1020 1021 1022 1023
/* for inner inode cache management */
struct inode_management {
	struct radix_tree_root ino_root;	/* ino entry array */
	spinlock_t ino_lock;			/* for ino entry lock */
	struct list_head ino_list;		/* inode list head */
	unsigned long ino_num;			/* number of entries */
};

1024 1025 1026 1027 1028 1029
/* For s_flag in struct f2fs_sb_info */
enum {
	SBI_IS_DIRTY,				/* dirty flag for checkpoint */
	SBI_IS_CLOSE,				/* specify unmounting */
	SBI_NEED_FSCK,				/* need fsck.f2fs to fix */
	SBI_POR_DOING,				/* recovery is doing or not */
1030
	SBI_NEED_SB_WRITE,			/* need to recover superblock */
1031
	SBI_NEED_CP,				/* need to checkpoint */
1032 1033
};

1034 1035
enum {
	CP_TIME,
1036
	REQ_TIME,
1037 1038 1039
	MAX_TIME,
};

1040 1041
struct f2fs_sb_info {
	struct super_block *sb;			/* pointer to VFS super block */
1042
	struct proc_dir_entry *s_proc;		/* proc entry */
1043
	struct f2fs_super_block *raw_super;	/* raw super block pointer */
1044
	int valid_super_block;			/* valid super block no */
1045
	unsigned long s_flag;				/* flags for sbi */
1046

1047 1048 1049 1050 1051
#ifdef CONFIG_BLK_DEV_ZONED
	unsigned int blocks_per_blkz;		/* F2FS blocks per zone */
	unsigned int log_blocks_per_blkz;	/* log2 F2FS blocks per zone */
#endif

1052 1053 1054 1055 1056 1057
	/* for node-related operations */
	struct f2fs_nm_info *nm_info;		/* node manager */
	struct inode *node_inode;		/* cache node blocks */

	/* for segment-related operations */
	struct f2fs_sm_info *sm_info;		/* segment manager */
1058 1059

	/* for bio operations */
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	struct f2fs_bio_info *write_io[NR_PAGE_TYPE];	/* for write bios */
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1061 1062
	struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
						/* bio ordering for NODE/DATA */
1063 1064
	int write_io_size_bits;			/* Write IO size bits */
	mempool_t *write_io_dummy;		/* Dummy pages */
1065 1066 1067

	/* for checkpoint */
	struct f2fs_checkpoint *ckpt;		/* raw checkpoint pointer */
1068
	int cur_cp_pack;			/* remain current cp pack */
1069
	spinlock_t cp_lock;			/* for flag in ckpt */
1070
	struct inode *meta_inode;		/* cache meta blocks */
1071
	struct mutex cp_mutex;			/* checkpoint procedure lock */
1072
	struct rw_semaphore cp_rwsem;		/* blocking FS operations */
1073
	struct rw_semaphore node_write;		/* locking node writes */
1074
	struct rw_semaphore node_change;	/* locking node change */
1075
	wait_queue_head_t cp_wait;
1076 1077
	unsigned long last_time[MAX_TIME];	/* to store time in jiffies */
	long interval_time[MAX_TIME];		/* to store thresholds */
1078

1079
	struct inode_management im[MAX_INO_ENTRY];      /* manage inode cache */
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	/* for orphan inode, use 0'th array */
1082
	unsigned int max_orphans;		/* max orphan inodes */
1083

1084 1085 1086
	/* for inode management */
	struct list_head inode_list[NR_INODE_TYPE];	/* dirty inode list */
	spinlock_t inode_lock[NR_INODE_TYPE];	/* for dirty inode list lock */
1087

1088 1089
	/* for extent tree cache */
	struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1090
	struct mutex extent_tree_lock;	/* locking extent radix tree */
1091 1092
	struct list_head extent_list;		/* lru list for shrinker */
	spinlock_t extent_lock;			/* locking extent lru list */
1093
	atomic_t total_ext_tree;		/* extent tree count */
1094
	struct list_head zombie_list;		/* extent zombie tree list */
1095
	atomic_t total_zombie_tree;		/* extent zombie tree count */
1096 1097
	atomic_t total_ext_node;		/* extent info count */

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	/* basic filesystem units */
1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111
	unsigned int log_sectors_per_block;	/* log2 sectors per block */
	unsigned int log_blocksize;		/* log2 block size */
	unsigned int blocksize;			/* block size */
	unsigned int root_ino_num;		/* root inode number*/
	unsigned int node_ino_num;		/* node inode number*/
	unsigned int meta_ino_num;		/* meta inode number*/
	unsigned int log_blocks_per_seg;	/* log2 blocks per segment */
	unsigned int blocks_per_seg;		/* blocks per segment */
	unsigned int segs_per_sec;		/* segments per section */
	unsigned int secs_per_zone;		/* sections per zone */
	unsigned int total_sections;		/* total section count */
	unsigned int total_node_count;		/* total node block count */
	unsigned int total_valid_node_count;	/* valid node block count */
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	loff_t max_file_blocks;			/* max block index of file */
1113
	int active_logs;			/* # of active logs */
1114
	int dir_level;				/* directory level */
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	int inline_xattr_size;			/* inline xattr size */
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	unsigned int trigger_ssr_threshold;	/* threshold to trigger ssr */
1117
	int readdir_ra;				/* readahead inode in readdir */
1118 1119 1120

	block_t user_block_count;		/* # of user blocks */
	block_t total_valid_block_count;	/* # of valid blocks */
1121
	block_t discard_blks;			/* discard command candidats */
1122
	block_t last_valid_block_count;		/* for recovery */
1123
	block_t reserved_blocks;		/* configurable reserved blocks */
1124
	block_t current_reserved_blocks;	/* current reserved blocks */
1125
	block_t root_reserved_blocks;		/* root reserved blocks */
1126 1127
	kuid_t s_resuid;			/* reserved blocks for uid */
	kgid_t s_resgid;			/* reserved blocks for gid */
1128

1129 1130
	unsigned int nquota_files;		/* # of quota sysfile */

1131
	u32 s_next_generation;			/* for NFS support */
1132 1133

	/* # of pages, see count_type */
1134
	atomic_t nr_pages[NR_COUNT_TYPE];
1135 1136
	/* # of allocated blocks */
	struct percpu_counter alloc_valid_block_count;
1137

1138 1139 1140
	/* writeback control */
	atomic_t wb_sync_req;			/* count # of WB_SYNC threads */

1141 1142 1143
	/* valid inode count */
	struct percpu_counter total_valid_inode_count;

1144 1145 1146 1147 1148
	struct f2fs_mount_info mount_opt;	/* mount options */

	/* for cleaning operations */
	struct mutex gc_mutex;			/* mutex for GC */
	struct f2fs_gc_kthread	*gc_thread;	/* GC thread */
1149
	unsigned int cur_victim_sec;		/* current victim section num */
1150

1151 1152 1153
	/* threshold for converting bg victims for fg */
	u64 fggc_threshold;

1154 1155 1156
	/* threshold for gc trials on pinned files */
	u64 gc_pin_file_threshold;

1157 1158 1159
	/* maximum # of trials to find a victim segment for SSR and GC */
	unsigned int max_victim_search;

1160 1161 1162 1163
	/*
	 * for stat information.
	 * one is for the LFS mode, and the other is for the SSR mode.
	 */
1164
#ifdef CONFIG_F2FS_STAT_FS
1165 1166 1167
	struct f2fs_stat_info *stat_info;	/* FS status information */
	unsigned int segment_count[2];		/* # of allocated segments */
	unsigned int block_count[2];		/* # of allocated blocks */
1168
	atomic_t inplace_count;		/* # of inplace update */
1169 1170 1171 1172
	atomic64_t total_hit_ext;		/* # of lookup extent cache */
	atomic64_t read_hit_rbtree;		/* # of hit rbtree extent node */
	atomic64_t read_hit_largest;		/* # of hit largest extent node */
	atomic64_t read_hit_cached;		/* # of hit cached extent node */
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	atomic_t inline_xattr;			/* # of inline_xattr inodes */
1174 1175
	atomic_t inline_inode;			/* # of inline_data inodes */
	atomic_t inline_dir;			/* # of inline_dentry inodes */
1176
	atomic_t aw_cnt;			/* # of atomic writes */
1177
	atomic_t vw_cnt;			/* # of volatile writes */
1178
	atomic_t max_aw_cnt;			/* max # of atomic writes */
1179
	atomic_t max_vw_cnt;			/* max # of volatile writes */
1180
	int bg_gc;				/* background gc calls */
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	unsigned int ndirty_inode[NR_INODE_TYPE];	/* # of dirty inodes */
1182
#endif
1183
	spinlock_t stat_lock;			/* lock for stat operations */
1184

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	/* For app/fs IO statistics */
	spinlock_t iostat_lock;
	unsigned long long write_iostat[NR_IO_TYPE];
	bool iostat_enable;

1190 1191 1192
	/* For sysfs suppport */
	struct kobject s_kobj;
	struct completion s_kobj_unregister;
1193 1194 1195

	/* For shrinker support */
	struct list_head s_list;
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1196 1197
	int s_ndevs;				/* number of devices */
	struct f2fs_dev_info *devs;		/* for device list */
1198 1199
	unsigned int dirty_device;		/* for checkpoint data flush */
	spinlock_t dev_lock;			/* protect dirty_device */
1200 1201
	struct mutex umount_mutex;
	unsigned int shrinker_run_no;
1202 1203 1204 1205

	/* For write statistics */
	u64 sectors_written_start;
	u64 kbytes_written;
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	/* Reference to checksum algorithm driver via cryptoapi */
	struct crypto_shash *s_chksum_driver;
1209

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	/* Precomputed FS UUID checksum for seeding other checksums */
	__u32 s_chksum_seed;

1213 1214 1215 1216
	/* For fault injection */
#ifdef CONFIG_F2FS_FAULT_INJECTION
	struct f2fs_fault_info fault_info;
#endif
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1217 1218 1219 1220 1221 1222

#ifdef CONFIG_QUOTA
	/* Names of quota files with journalled quota */
	char *s_qf_names[MAXQUOTAS];
	int s_jquota_fmt;			/* Format of quota to use */
#endif
1223 1224
};

1225
#ifdef CONFIG_F2FS_FAULT_INJECTION
1226 1227 1228 1229
#define f2fs_show_injection_info(type)				\
	printk("%sF2FS-fs : inject %s in %s of %pF\n",		\
		KERN_INFO, fault_name[type],			\
		__func__, __builtin_return_address(0))
1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248
static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
{
	struct f2fs_fault_info *ffi = &sbi->fault_info;

	if (!ffi->inject_rate)
		return false;

	if (!IS_FAULT_SET(ffi, type))
		return false;

	atomic_inc(&ffi->inject_ops);
	if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
		atomic_set(&ffi->inject_ops, 0);
		return true;
	}
	return false;
}
#endif

1249 1250 1251 1252
/* For write statistics. Suppose sector size is 512 bytes,
 * and the return value is in kbytes. s is of struct f2fs_sb_info.
 */
#define BD_PART_WRITTEN(s)						 \
1253 1254
(((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) -		 \
		(s)->sectors_written_start) >> 1)
1255

1256 1257 1258 1259 1260 1261 1262
static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
{
	sbi->last_time[type] = jiffies;
}

static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
{
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	unsigned long interval = sbi->interval_time[type] * HZ;
1264 1265 1266 1267

	return time_after(jiffies, sbi->last_time[type] + interval);
}

1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
static inline bool is_idle(struct f2fs_sb_info *sbi)
{
	struct block_device *bdev = sbi->sb->s_bdev;
	struct request_queue *q = bdev_get_queue(bdev);
	struct request_list *rl = &q->root_rl;

	if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
		return 0;

	return f2fs_time_over(sbi, REQ_TIME);
}

1280 1281 1282
/*
 * Inline functions
 */
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static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
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			      const void *address, unsigned int length)
{
	struct {
		struct shash_desc shash;
		char ctx[4];
	} desc;
	int err;

	BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));

	desc.shash.tfm = sbi->s_chksum_driver;
	desc.shash.flags = 0;
	*(u32 *)desc.ctx = crc;

	err = crypto_shash_update(&desc.shash, address, length);
	BUG_ON(err);

	return *(u32 *)desc.ctx;
}

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1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321
static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
			   unsigned int length)
{
	return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
}

static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
				  void *buf, size_t buf_size)
{
	return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
}

static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
			      const void *address, unsigned int length)
{
	return __f2fs_crc32(sbi, crc, address, length);
}

1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
{
	return container_of(inode, struct f2fs_inode_info, vfs_inode);
}

static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
{
	return F2FS_SB(inode->i_sb);
}

static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
{
	return F2FS_I_SB(mapping->host);
}

static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
{
	return F2FS_M_SB(page->mapping);
}

1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
{
	return (struct f2fs_super_block *)(sbi->raw_super);
}

static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
{
	return (struct f2fs_checkpoint *)(sbi->ckpt);
}

1357 1358 1359 1360 1361
static inline struct f2fs_node *F2FS_NODE(struct page *page)
{
	return (struct f2fs_node *)page_address(page);
}

1362 1363 1364 1365 1366
static inline struct f2fs_inode *F2FS_INODE(struct page *page)
{
	return &((struct f2fs_node *)page_address(page))->i;
}

1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391
static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
{
	return (struct f2fs_nm_info *)(sbi->nm_info);
}

static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
{
	return (struct f2fs_sm_info *)(sbi->sm_info);
}

static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
{
	return (struct sit_info *)(SM_I(sbi)->sit_info);
}

static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
{
	return (struct free_segmap_info *)(SM_I(sbi)->free_info);
}

static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
{
	return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
}

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static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
{
	return sbi->meta_inode->i_mapping;
}

1397 1398 1399 1400 1401
static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
{
	return sbi->node_inode->i_mapping;
}

1402 1403
static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
{
1404
	return test_bit(type, &sbi->s_flag);
1405 1406 1407
}

static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1408
{
1409
	set_bit(type, &sbi->s_flag);
1410 1411
}

1412
static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1413
{
1414
	clear_bit(type, &sbi->s_flag);
1415 1416
}

1417 1418 1419 1420 1421
static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
{
	return le64_to_cpu(cp->checkpoint_ver);
}

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1422 1423 1424 1425 1426 1427 1428
static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
{
	if (type < F2FS_MAX_QUOTAS)
		return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
	return 0;
}

1429 1430 1431 1432 1433 1434
static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
{
	size_t crc_offset = le32_to_cpu(cp->checksum_offset);
	return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
}

1435
static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1436 1437
{
	unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1438

1439 1440 1441
	return ckpt_flags & f;
}

1442
static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1443
{
1444 1445 1446 1447 1448 1449 1450 1451
	return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
}

static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
{
	unsigned int ckpt_flags;

	ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1452 1453 1454 1455
	ckpt_flags |= f;
	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
}

1456
static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1457
{
1458 1459 1460
	unsigned long flags;

	spin_lock_irqsave(&sbi->cp_lock, flags);
1461
	__set_ckpt_flags(F2FS_CKPT(sbi), f);
1462
	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1463 1464 1465 1466 1467 1468 1469
}

static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
{
	unsigned int ckpt_flags;

	ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1470 1471 1472 1473
	ckpt_flags &= (~f);
	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
}

1474 1475
static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
{
1476 1477 1478
	unsigned long flags;

	spin_lock_irqsave(&sbi->cp_lock, flags);
1479
	__clear_ckpt_flags(F2FS_CKPT(sbi), f);
1480
	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1481 1482
}

1483 1484
static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
{
1485 1486
	unsigned long flags;

1487 1488 1489
	set_sbi_flag(sbi, SBI_NEED_FSCK);

	if (lock)
1490
		spin_lock_irqsave(&sbi->cp_lock, flags);
1491 1492 1493 1494
	__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
	kfree(NM_I(sbi)->nat_bits);
	NM_I(sbi)->nat_bits = NULL;
	if (lock)
1495
		spin_unlock_irqrestore(&sbi->cp_lock, flags);
1496 1497 1498 1499 1500 1501 1502
}

static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
					struct cp_control *cpc)
{
	bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);

1503
	return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1504 1505
}

1506
static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1507
{
1508
	down_read(&sbi->cp_rwsem);
1509 1510
}

1511 1512 1513 1514 1515
static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
{
	return down_read_trylock(&sbi->cp_rwsem);
}

1516
static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1517
{
1518
	up_read(&sbi->cp_rwsem);
1519 1520
}

1521
static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1522
{
1523
	down_write(&sbi->cp_rwsem);
1524 1525
}

1526
static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1527
{
1528
	up_write(&sbi->cp_rwsem);
1529 1530
}

1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543
static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
{
	int reason = CP_SYNC;

	if (test_opt(sbi, FASTBOOT))
		reason = CP_FASTBOOT;
	if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
		reason = CP_UMOUNT;
	return reason;
}

static inline bool __remain_node_summaries(int reason)
{
1544
	return (reason & (CP_UMOUNT | CP_FASTBOOT));
1545 1546 1547 1548
}

static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
{
1549 1550
	return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
			is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1551 1552
}

1553 1554 1555
/*
 * Check whether the given nid is within node id range.
 */
1556
static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1557
{
1558 1559
	if (unlikely(nid < F2FS_ROOT_INO(sbi)))
		return -EINVAL;
1560
	if (unlikely(nid >= NM_I(sbi)->max_nid))
1561 1562
		return -EINVAL;
	return 0;
1563 1564 1565 1566 1567 1568 1569
}

/*
 * Check whether the inode has blocks or not
 */
static inline int F2FS_HAS_BLOCKS(struct inode *inode)
{
1570 1571
	block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;

1572
	return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1573 1574
}

1575 1576 1577 1578 1579
static inline bool f2fs_has_xattr_block(unsigned int ofs)
{
	return ofs == XATTR_NODE_OFFSET;
}

1580 1581
static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
					struct inode *inode)
1582
{
1583 1584
	if (!inode)
		return true;
1585 1586
	if (!test_opt(sbi, RESERVE_ROOT))
		return false;
1587 1588
	if (IS_NOQUOTA(inode))
		return true;
1589 1590 1591 1592 1593 1594 1595 1596 1597 1598
	if (capable(CAP_SYS_RESOURCE))
		return true;
	if (uid_eq(sbi->s_resuid, current_fsuid()))
		return true;
	if (!gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) &&
					in_group_p(sbi->s_resgid))
		return true;
	return false;
}

C
Chao Yu 已提交
1599 1600
static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1601
				 struct inode *inode, blkcnt_t *count)
1602
{
C
Chao Yu 已提交
1603
	blkcnt_t diff = 0, release = 0;
1604
	block_t avail_user_block_count;
C
Chao Yu 已提交
1605 1606 1607 1608 1609
	int ret;

	ret = dquot_reserve_block(inode, *count);
	if (ret)
		return ret;
1610

J
Jaegeuk Kim 已提交
1611
#ifdef CONFIG_F2FS_FAULT_INJECTION
1612 1613
	if (time_to_inject(sbi, FAULT_BLOCK)) {
		f2fs_show_injection_info(FAULT_BLOCK);
C
Chao Yu 已提交
1614 1615
		release = *count;
		goto enospc;
1616
	}
J
Jaegeuk Kim 已提交
1617
#endif
1618 1619 1620 1621 1622 1623
	/*
	 * let's increase this in prior to actual block count change in order
	 * for f2fs_sync_file to avoid data races when deciding checkpoint.
	 */
	percpu_counter_add(&sbi->alloc_valid_block_count, (*count));

1624 1625
	spin_lock(&sbi->stat_lock);
	sbi->total_valid_block_count += (block_t)(*count);
1626 1627
	avail_user_block_count = sbi->user_block_count -
					sbi->current_reserved_blocks;
1628

1629
	if (!__allow_reserved_blocks(sbi, inode))
1630 1631
		avail_user_block_count -= sbi->root_reserved_blocks;

1632 1633
	if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
		diff = sbi->total_valid_block_count - avail_user_block_count;
1634 1635
		if (diff > *count)
			diff = *count;
1636
		*count -= diff;
C
Chao Yu 已提交
1637
		release = diff;
1638
		sbi->total_valid_block_count -= diff;
1639 1640
		if (!*count) {
			spin_unlock(&sbi->stat_lock);
1641
			percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
C
Chao Yu 已提交
1642
			goto enospc;
1643
		}
1644 1645
	}
	spin_unlock(&sbi->stat_lock);
1646

L
LiFan 已提交
1647
	if (unlikely(release))
C
Chao Yu 已提交
1648 1649 1650 1651 1652 1653 1654
		dquot_release_reservation_block(inode, release);
	f2fs_i_blocks_write(inode, *count, true, true);
	return 0;

enospc:
	dquot_release_reservation_block(inode, release);
	return -ENOSPC;
1655 1656
}

1657
static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1658
						struct inode *inode,
1659
						block_t count)
1660
{
1661 1662
	blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;

1663
	spin_lock(&sbi->stat_lock);
1664
	f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1665
	f2fs_bug_on(sbi, inode->i_blocks < sectors);
1666
	sbi->total_valid_block_count -= (block_t)count;
1667 1668 1669 1670
	if (sbi->reserved_blocks &&
		sbi->current_reserved_blocks < sbi->reserved_blocks)
		sbi->current_reserved_blocks = min(sbi->reserved_blocks,
					sbi->current_reserved_blocks + count);
1671
	spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1672
	f2fs_i_blocks_write(inode, count, false, true);
1673 1674 1675 1676
}

static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
{
1677
	atomic_inc(&sbi->nr_pages[count_type]);
1678

1679 1680
	if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
		count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1681 1682
		return;

1683
	set_sbi_flag(sbi, SBI_IS_DIRTY);
1684 1685
}

1686
static inline void inode_inc_dirty_pages(struct inode *inode)
1687
{
1688
	atomic_inc(&F2FS_I(inode)->dirty_pages);
1689 1690
	inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1691 1692
	if (IS_NOQUOTA(inode))
		inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1693 1694 1695 1696
}

static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
{
1697
	atomic_dec(&sbi->nr_pages[count_type]);
1698 1699
}

1700
static inline void inode_dec_dirty_pages(struct inode *inode)
1701
{
1702 1703
	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
			!S_ISLNK(inode->i_mode))
1704 1705
		return;

1706
	atomic_dec(&F2FS_I(inode)->dirty_pages);
1707 1708
	dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1709 1710
	if (IS_NOQUOTA(inode))
		dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1711 1712
}

1713
static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1714
{
1715
	return atomic_read(&sbi->nr_pages[count_type]);
1716 1717
}

1718
static inline int get_dirty_pages(struct inode *inode)
1719
{
1720
	return atomic_read(&F2FS_I(inode)->dirty_pages);
1721 1722
}

1723 1724
static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
{
1725
	unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1726 1727 1728 1729
	unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
						sbi->log_blocks_per_seg;

	return segs / sbi->segs_per_sec;
1730 1731
}

1732 1733
static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
{
1734
	return sbi->total_valid_block_count;
1735 1736
}

1737 1738 1739 1740 1741
static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
{
	return sbi->discard_blks;
}

1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754
static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
{
	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);

	/* return NAT or SIT bitmap */
	if (flag == NAT_BITMAP)
		return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
	else if (flag == SIT_BITMAP)
		return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);

	return 0;
}

W
Wanpeng Li 已提交
1755 1756 1757 1758 1759
static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
{
	return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
}

1760 1761 1762
static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
{
	struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
C
Changman Lee 已提交
1763 1764
	int offset;

W
Wanpeng Li 已提交
1765
	if (__cp_payload(sbi) > 0) {
C
Changman Lee 已提交
1766 1767 1768
		if (flag == NAT_BITMAP)
			return &ckpt->sit_nat_version_bitmap;
		else
J
Jaegeuk Kim 已提交
1769
			return (unsigned char *)ckpt + F2FS_BLKSIZE;
C
Changman Lee 已提交
1770 1771
	} else {
		offset = (flag == NAT_BITMAP) ?
1772
			le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
C
Changman Lee 已提交
1773 1774
		return &ckpt->sit_nat_version_bitmap + offset;
	}
1775 1776 1777 1778
}

static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
{
1779
	block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1780

1781
	if (sbi->cur_cp_pack == 2)
1782
		start_addr += sbi->blocks_per_seg;
1783 1784
	return start_addr;
}
1785

1786 1787 1788
static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
{
	block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1789

1790 1791
	if (sbi->cur_cp_pack == 1)
		start_addr += sbi->blocks_per_seg;
1792 1793 1794
	return start_addr;
}

1795 1796 1797 1798 1799
static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
{
	sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
}

1800 1801 1802 1803 1804
static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
{
	return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
}

C
Chao Yu 已提交
1805
static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
1806
					struct inode *inode, bool is_inode)
1807 1808 1809
{
	block_t	valid_block_count;
	unsigned int valid_node_count;
C
Chao Yu 已提交
1810 1811 1812 1813 1814 1815 1816
	bool quota = inode && !is_inode;

	if (quota) {
		int ret = dquot_reserve_block(inode, 1);
		if (ret)
			return ret;
	}
1817

1818 1819 1820 1821 1822 1823 1824
#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(sbi, FAULT_BLOCK)) {
		f2fs_show_injection_info(FAULT_BLOCK);
		goto enospc;
	}
#endif

1825 1826
	spin_lock(&sbi->stat_lock);

1827 1828 1829
	valid_block_count = sbi->total_valid_block_count +
					sbi->current_reserved_blocks + 1;

1830
	if (!__allow_reserved_blocks(sbi, inode))
1831 1832 1833
		valid_block_count += sbi->root_reserved_blocks;

	if (unlikely(valid_block_count > sbi->user_block_count)) {
1834
		spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1835
		goto enospc;
1836 1837
	}

1838
	valid_node_count = sbi->total_valid_node_count + 1;
1839
	if (unlikely(valid_node_count > sbi->total_node_count)) {
1840
		spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1841
		goto enospc;
1842 1843
	}

1844 1845
	sbi->total_valid_node_count++;
	sbi->total_valid_block_count++;
1846 1847
	spin_unlock(&sbi->stat_lock);

1848 1849 1850 1851
	if (inode) {
		if (is_inode)
			f2fs_mark_inode_dirty_sync(inode, true);
		else
C
Chao Yu 已提交
1852
			f2fs_i_blocks_write(inode, 1, true, true);
1853
	}
1854

1855
	percpu_counter_inc(&sbi->alloc_valid_block_count);
C
Chao Yu 已提交
1856 1857 1858 1859 1860 1861
	return 0;

enospc:
	if (quota)
		dquot_release_reservation_block(inode, 1);
	return -ENOSPC;
1862 1863 1864
}

static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1865
					struct inode *inode, bool is_inode)
1866 1867 1868
{
	spin_lock(&sbi->stat_lock);

1869 1870
	f2fs_bug_on(sbi, !sbi->total_valid_block_count);
	f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1871
	f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1872

1873 1874
	sbi->total_valid_node_count--;
	sbi->total_valid_block_count--;
1875 1876 1877
	if (sbi->reserved_blocks &&
		sbi->current_reserved_blocks < sbi->reserved_blocks)
		sbi->current_reserved_blocks++;
1878 1879

	spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1880 1881 1882

	if (!is_inode)
		f2fs_i_blocks_write(inode, 1, false, true);
1883 1884 1885 1886
}

static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
{
1887
	return sbi->total_valid_node_count;
1888 1889 1890 1891
}

static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
{
1892
	percpu_counter_inc(&sbi->total_valid_inode_count);
1893 1894
}

1895
static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1896
{
1897
	percpu_counter_dec(&sbi->total_valid_inode_count);
1898 1899
}

1900
static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1901
{
1902
	return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1903 1904
}

1905 1906 1907
static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
						pgoff_t index, bool for_write)
{
1908 1909
#ifdef CONFIG_F2FS_FAULT_INJECTION
	struct page *page = find_lock_page(mapping, index);
1910

1911 1912 1913
	if (page)
		return page;

1914 1915
	if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
		f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1916
		return NULL;
1917
	}
1918
#endif
1919 1920 1921 1922 1923
	if (!for_write)
		return grab_cache_page(mapping, index);
	return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
}

C
Chao Yu 已提交
1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936
static inline struct page *f2fs_pagecache_get_page(
				struct address_space *mapping, pgoff_t index,
				int fgp_flags, gfp_t gfp_mask)
{
#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
		f2fs_show_injection_info(FAULT_PAGE_GET);
		return NULL;
	}
#endif
	return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
}

1937 1938 1939 1940 1941 1942 1943 1944 1945 1946
static inline void f2fs_copy_page(struct page *src, struct page *dst)
{
	char *src_kaddr = kmap(src);
	char *dst_kaddr = kmap(dst);

	memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
	kunmap(dst);
	kunmap(src);
}

1947 1948
static inline void f2fs_put_page(struct page *page, int unlock)
{
1949
	if (!page)
1950 1951 1952
		return;

	if (unlock) {
1953
		f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1954 1955
		unlock_page(page);
	}
1956
	put_page(page);
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
}

static inline void f2fs_put_dnode(struct dnode_of_data *dn)
{
	if (dn->node_page)
		f2fs_put_page(dn->node_page, 1);
	if (dn->inode_page && dn->node_page != dn->inode_page)
		f2fs_put_page(dn->inode_page, 0);
	dn->node_page = NULL;
	dn->inode_page = NULL;
}

static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
1970
					size_t size)
1971
{
1972
	return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1973 1974
}

1975 1976 1977 1978 1979
static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
						gfp_t flags)
{
	void *entry;

1980 1981 1982
	entry = kmem_cache_alloc(cachep, flags);
	if (!entry)
		entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1983 1984 1985
	return entry;
}

1986 1987
static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
						int npages, bool no_fail)
J
Jaegeuk Kim 已提交
1988 1989 1990
{
	struct bio *bio;

1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
	if (no_fail) {
		/* No failure on bio allocation */
		bio = bio_alloc(GFP_NOIO, npages);
		if (!bio)
			bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
		return bio;
	}
#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(sbi, FAULT_ALLOC_BIO)) {
		f2fs_show_injection_info(FAULT_ALLOC_BIO);
		return NULL;
	}
#endif
	return bio_alloc(GFP_KERNEL, npages);
J
Jaegeuk Kim 已提交
2005 2006
}

2007 2008 2009 2010 2011 2012 2013
static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
				unsigned long index, void *item)
{
	while (radix_tree_insert(root, index, item))
		cond_resched();
}

2014 2015 2016 2017
#define RAW_IS_INODE(p)	((p)->footer.nid == (p)->footer.ino)

static inline bool IS_INODE(struct page *page)
{
2018
	struct f2fs_node *p = F2FS_NODE(page);
2019

2020 2021 2022
	return RAW_IS_INODE(p);
}

2023 2024 2025 2026 2027 2028
static inline int offset_in_addr(struct f2fs_inode *i)
{
	return (i->i_inline & F2FS_EXTRA_ATTR) ?
			(le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
}

2029 2030 2031 2032 2033
static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
{
	return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
}

2034 2035 2036
static inline int f2fs_has_extra_attr(struct inode *inode);
static inline block_t datablock_addr(struct inode *inode,
			struct page *node_page, unsigned int offset)
2037 2038 2039
{
	struct f2fs_node *raw_node;
	__le32 *addr_array;
2040 2041
	int base = 0;
	bool is_inode = IS_INODE(node_page);
2042

2043
	raw_node = F2FS_NODE(node_page);
2044 2045

	/* from GC path only */
2046 2047
	if (is_inode) {
		if (!inode)
2048
			base = offset_in_addr(&raw_node->i);
2049 2050
		else if (f2fs_has_extra_attr(inode))
			base = get_extra_isize(inode);
2051 2052
	}

2053
	addr_array = blkaddr_in_node(raw_node);
2054
	return le32_to_cpu(addr_array[base + offset]);
2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065
}

static inline int f2fs_test_bit(unsigned int nr, char *addr)
{
	int mask;

	addr += (nr >> 3);
	mask = 1 << (7 - (nr & 0x07));
	return mask & *addr;
}

2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083
static inline void f2fs_set_bit(unsigned int nr, char *addr)
{
	int mask;

	addr += (nr >> 3);
	mask = 1 << (7 - (nr & 0x07));
	*addr |= mask;
}

static inline void f2fs_clear_bit(unsigned int nr, char *addr)
{
	int mask;

	addr += (nr >> 3);
	mask = 1 << (7 - (nr & 0x07));
	*addr &= ~mask;
}

2084
static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095
{
	int mask;
	int ret;

	addr += (nr >> 3);
	mask = 1 << (7 - (nr & 0x07));
	ret = mask & *addr;
	*addr |= mask;
	return ret;
}

2096
static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107
{
	int mask;
	int ret;

	addr += (nr >> 3);
	mask = 1 << (7 - (nr & 0x07));
	ret = mask & *addr;
	*addr &= ~mask;
	return ret;
}

2108 2109 2110 2111 2112 2113 2114 2115 2116
static inline void f2fs_change_bit(unsigned int nr, char *addr)
{
	int mask;

	addr += (nr >> 3);
	mask = 1 << (7 - (nr & 0x07));
	*addr ^= mask;
}

C
Chao Yu 已提交
2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130
#define F2FS_REG_FLMASK		(~(FS_DIRSYNC_FL | FS_TOPDIR_FL))
#define F2FS_OTHER_FLMASK	(FS_NODUMP_FL | FS_NOATIME_FL)
#define F2FS_FL_INHERITED	(FS_PROJINHERIT_FL)

static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
{
	if (S_ISDIR(mode))
		return flags;
	else if (S_ISREG(mode))
		return flags & F2FS_REG_FLMASK;
	else
		return flags & F2FS_OTHER_FLMASK;
}

2131 2132 2133
/* used for f2fs_inode_info->flags */
enum {
	FI_NEW_INODE,		/* indicate newly allocated inode */
2134
	FI_DIRTY_INODE,		/* indicate inode is dirty or not */
2135
	FI_AUTO_RECOVER,	/* indicate inode is recoverable */
2136
	FI_DIRTY_DIR,		/* indicate directory has dirty pages */
2137 2138 2139
	FI_INC_LINK,		/* need to increment i_nlink */
	FI_ACL_MODE,		/* indicate acl mode */
	FI_NO_ALLOC,		/* should not allocate any blocks */
2140
	FI_FREE_NID,		/* free allocated nide */
2141
	FI_NO_EXTENT,		/* not to use the extent cache */
J
Jaegeuk Kim 已提交
2142
	FI_INLINE_XATTR,	/* used for inline xattr */
2143
	FI_INLINE_DATA,		/* used for inline data*/
2144
	FI_INLINE_DENTRY,	/* used for inline dentry */
2145 2146
	FI_APPEND_WRITE,	/* inode has appended data */
	FI_UPDATE_WRITE,	/* inode has in-place-update data */
J
Jaegeuk Kim 已提交
2147 2148
	FI_NEED_IPU,		/* used for ipu per file */
	FI_ATOMIC_FILE,		/* indicate atomic file */
C
Chao Yu 已提交
2149
	FI_ATOMIC_COMMIT,	/* indicate the state of atomical committing */
2150
	FI_VOLATILE_FILE,	/* indicate volatile file */
2151
	FI_FIRST_BLOCK_WRITTEN,	/* indicate #0 data block was written */
2152
	FI_DROP_CACHE,		/* drop dirty page cache */
2153
	FI_DATA_EXIST,		/* indicate data exists */
2154
	FI_INLINE_DOTS,		/* indicate inline dot dentries */
C
Chao Yu 已提交
2155
	FI_DO_DEFRAG,		/* indicate defragment is running */
2156
	FI_DIRTY_FILE,		/* indicate regular/symlink has dirty pages */
2157
	FI_NO_PREALLOC,		/* indicate skipped preallocated blocks */
2158
	FI_HOT_DATA,		/* indicate file is hot */
2159
	FI_EXTRA_ATTR,		/* indicate file has extra attribute */
C
Chao Yu 已提交
2160
	FI_PROJ_INHERIT,	/* indicate file inherits projectid */
2161
	FI_PIN_FILE,		/* indicate file should not be gced */
2162 2163
};

2164 2165 2166 2167 2168 2169 2170
static inline void __mark_inode_dirty_flag(struct inode *inode,
						int flag, bool set)
{
	switch (flag) {
	case FI_INLINE_XATTR:
	case FI_INLINE_DATA:
	case FI_INLINE_DENTRY:
2171
	case FI_NEW_INODE:
2172 2173 2174 2175
		if (set)
			return;
	case FI_DATA_EXIST:
	case FI_INLINE_DOTS:
2176
	case FI_PIN_FILE:
2177
		f2fs_mark_inode_dirty_sync(inode, true);
2178 2179 2180
	}
}

2181
static inline void set_inode_flag(struct inode *inode, int flag)
2182
{
2183 2184
	if (!test_bit(flag, &F2FS_I(inode)->flags))
		set_bit(flag, &F2FS_I(inode)->flags);
2185
	__mark_inode_dirty_flag(inode, flag, true);
2186 2187
}

2188
static inline int is_inode_flag_set(struct inode *inode, int flag)
2189
{
2190
	return test_bit(flag, &F2FS_I(inode)->flags);
2191 2192
}

2193
static inline void clear_inode_flag(struct inode *inode, int flag)
2194
{
2195 2196
	if (test_bit(flag, &F2FS_I(inode)->flags))
		clear_bit(flag, &F2FS_I(inode)->flags);
2197
	__mark_inode_dirty_flag(inode, flag, false);
2198 2199
}

2200
static inline void set_acl_inode(struct inode *inode, umode_t mode)
2201
{
2202 2203
	F2FS_I(inode)->i_acl_mode = mode;
	set_inode_flag(inode, FI_ACL_MODE);
2204
	f2fs_mark_inode_dirty_sync(inode, false);
2205 2206
}

2207
static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2208
{
2209 2210 2211 2212
	if (inc)
		inc_nlink(inode);
	else
		drop_nlink(inode);
2213
	f2fs_mark_inode_dirty_sync(inode, true);
2214 2215
}

2216
static inline void f2fs_i_blocks_write(struct inode *inode,
C
Chao Yu 已提交
2217
					block_t diff, bool add, bool claim)
2218
{
2219 2220 2221
	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);

C
Chao Yu 已提交
2222 2223 2224 2225 2226 2227 2228 2229 2230 2231
	/* add = 1, claim = 1 should be dquot_reserve_block in pair */
	if (add) {
		if (claim)
			dquot_claim_block(inode, diff);
		else
			dquot_alloc_block_nofail(inode, diff);
	} else {
		dquot_free_block(inode, diff);
	}

2232
	f2fs_mark_inode_dirty_sync(inode, true);
2233 2234
	if (clean || recover)
		set_inode_flag(inode, FI_AUTO_RECOVER);
2235 2236
}

2237 2238
static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
{
2239 2240 2241
	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);

2242 2243 2244 2245
	if (i_size_read(inode) == i_size)
		return;

	i_size_write(inode, i_size);
2246
	f2fs_mark_inode_dirty_sync(inode, true);
2247 2248
	if (clean || recover)
		set_inode_flag(inode, FI_AUTO_RECOVER);
2249 2250
}

2251
static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2252
{
2253
	F2FS_I(inode)->i_current_depth = depth;
2254
	f2fs_mark_inode_dirty_sync(inode, true);
2255 2256
}

2257 2258 2259 2260 2261 2262 2263
static inline void f2fs_i_gc_failures_write(struct inode *inode,
					unsigned int count)
{
	F2FS_I(inode)->i_gc_failures = count;
	f2fs_mark_inode_dirty_sync(inode, true);
}

2264
static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
J
Jaegeuk Kim 已提交
2265
{
2266
	F2FS_I(inode)->i_xattr_nid = xnid;
2267
	f2fs_mark_inode_dirty_sync(inode, true);
2268 2269 2270 2271 2272
}

static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
{
	F2FS_I(inode)->i_pino = pino;
2273
	f2fs_mark_inode_dirty_sync(inode, true);
2274 2275
}

2276
static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
J
Jaegeuk Kim 已提交
2277
{
2278 2279
	struct f2fs_inode_info *fi = F2FS_I(inode);

J
Jaegeuk Kim 已提交
2280
	if (ri->i_inline & F2FS_INLINE_XATTR)
2281
		set_bit(FI_INLINE_XATTR, &fi->flags);
2282
	if (ri->i_inline & F2FS_INLINE_DATA)
2283
		set_bit(FI_INLINE_DATA, &fi->flags);
2284
	if (ri->i_inline & F2FS_INLINE_DENTRY)
2285
		set_bit(FI_INLINE_DENTRY, &fi->flags);
2286
	if (ri->i_inline & F2FS_DATA_EXIST)
2287
		set_bit(FI_DATA_EXIST, &fi->flags);
2288
	if (ri->i_inline & F2FS_INLINE_DOTS)
2289
		set_bit(FI_INLINE_DOTS, &fi->flags);
2290 2291
	if (ri->i_inline & F2FS_EXTRA_ATTR)
		set_bit(FI_EXTRA_ATTR, &fi->flags);
2292 2293
	if (ri->i_inline & F2FS_PIN_FILE)
		set_bit(FI_PIN_FILE, &fi->flags);
J
Jaegeuk Kim 已提交
2294 2295
}

2296
static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
J
Jaegeuk Kim 已提交
2297 2298 2299
{
	ri->i_inline = 0;

2300
	if (is_inode_flag_set(inode, FI_INLINE_XATTR))
J
Jaegeuk Kim 已提交
2301
		ri->i_inline |= F2FS_INLINE_XATTR;
2302
	if (is_inode_flag_set(inode, FI_INLINE_DATA))
2303
		ri->i_inline |= F2FS_INLINE_DATA;
2304
	if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2305
		ri->i_inline |= F2FS_INLINE_DENTRY;
2306
	if (is_inode_flag_set(inode, FI_DATA_EXIST))
2307
		ri->i_inline |= F2FS_DATA_EXIST;
2308
	if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2309
		ri->i_inline |= F2FS_INLINE_DOTS;
2310 2311
	if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
		ri->i_inline |= F2FS_EXTRA_ATTR;
2312 2313
	if (is_inode_flag_set(inode, FI_PIN_FILE))
		ri->i_inline |= F2FS_PIN_FILE;
2314 2315 2316 2317 2318
}

static inline int f2fs_has_extra_attr(struct inode *inode)
{
	return is_inode_flag_set(inode, FI_EXTRA_ATTR);
J
Jaegeuk Kim 已提交
2319 2320
}

2321 2322
static inline int f2fs_has_inline_xattr(struct inode *inode)
{
2323
	return is_inode_flag_set(inode, FI_INLINE_XATTR);
2324 2325
}

2326
static inline unsigned int addrs_per_inode(struct inode *inode)
2327
{
2328
	return CUR_ADDRS_PER_INODE(inode) - get_inline_xattr_addrs(inode);
2329 2330
}

C
Chao Yu 已提交
2331
static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
J
Jaegeuk Kim 已提交
2332
{
2333
	struct f2fs_inode *ri = F2FS_INODE(page);
2334

J
Jaegeuk Kim 已提交
2335
	return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2336
					get_inline_xattr_addrs(inode)]);
J
Jaegeuk Kim 已提交
2337 2338 2339 2340
}

static inline int inline_xattr_size(struct inode *inode)
{
C
Chao Yu 已提交
2341
	return get_inline_xattr_addrs(inode) * sizeof(__le32);
J
Jaegeuk Kim 已提交
2342 2343
}

2344 2345
static inline int f2fs_has_inline_data(struct inode *inode)
{
2346
	return is_inode_flag_set(inode, FI_INLINE_DATA);
2347 2348
}

2349 2350
static inline int f2fs_exist_data(struct inode *inode)
{
2351
	return is_inode_flag_set(inode, FI_DATA_EXIST);
2352 2353
}

2354 2355
static inline int f2fs_has_inline_dots(struct inode *inode)
{
2356
	return is_inode_flag_set(inode, FI_INLINE_DOTS);
2357 2358
}

2359 2360 2361 2362 2363
static inline bool f2fs_is_pinned_file(struct inode *inode)
{
	return is_inode_flag_set(inode, FI_PIN_FILE);
}

J
Jaegeuk Kim 已提交
2364 2365
static inline bool f2fs_is_atomic_file(struct inode *inode)
{
2366
	return is_inode_flag_set(inode, FI_ATOMIC_FILE);
J
Jaegeuk Kim 已提交
2367 2368
}

C
Chao Yu 已提交
2369 2370 2371 2372 2373
static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
{
	return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
}

2374 2375
static inline bool f2fs_is_volatile_file(struct inode *inode)
{
2376
	return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2377 2378
}

2379 2380
static inline bool f2fs_is_first_block_written(struct inode *inode)
{
2381
	return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2382 2383
}

2384 2385
static inline bool f2fs_is_drop_cache(struct inode *inode)
{
2386
	return is_inode_flag_set(inode, FI_DROP_CACHE);
2387 2388
}

C
Chao Yu 已提交
2389
static inline void *inline_data_addr(struct inode *inode, struct page *page)
2390
{
2391
	struct f2fs_inode *ri = F2FS_INODE(page);
2392
	int extra_size = get_extra_isize(inode);
2393

2394
	return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2395 2396
}

2397 2398
static inline int f2fs_has_inline_dentry(struct inode *inode)
{
2399
	return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2400 2401
}

2402 2403 2404 2405 2406 2407 2408 2409
static inline int is_file(struct inode *inode, int type)
{
	return F2FS_I(inode)->i_advise & type;
}

static inline void set_file(struct inode *inode, int type)
{
	F2FS_I(inode)->i_advise |= type;
2410
	f2fs_mark_inode_dirty_sync(inode, true);
2411 2412 2413 2414 2415
}

static inline void clear_file(struct inode *inode, int type)
{
	F2FS_I(inode)->i_advise &= ~type;
2416
	f2fs_mark_inode_dirty_sync(inode, true);
2417 2418
}

2419 2420
static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
{
2421 2422
	bool ret;

2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434
	if (dsync) {
		struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

		spin_lock(&sbi->inode_lock[DIRTY_META]);
		ret = list_empty(&F2FS_I(inode)->gdirty_list);
		spin_unlock(&sbi->inode_lock[DIRTY_META]);
		return ret;
	}
	if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
			file_keep_isize(inode) ||
			i_size_read(inode) & PAGE_MASK)
		return false;
2435 2436 2437 2438 2439 2440

	down_read(&F2FS_I(inode)->i_sem);
	ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
	up_read(&F2FS_I(inode)->i_sem);

	return ret;
2441 2442
}

J
Jaegeuk Kim 已提交
2443 2444
static inline int f2fs_readonly(struct super_block *sb)
{
2445
	return sb->s_flags & SB_RDONLY;
J
Jaegeuk Kim 已提交
2446 2447
}

2448 2449
static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
{
2450
	return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2451 2452
}

2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463
static inline bool is_dot_dotdot(const struct qstr *str)
{
	if (str->len == 1 && str->name[0] == '.')
		return true;

	if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
		return true;

	return false;
}

J
Jaegeuk Kim 已提交
2464 2465 2466
static inline bool f2fs_may_extent_tree(struct inode *inode)
{
	if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2467
			is_inode_flag_set(inode, FI_NO_EXTENT))
J
Jaegeuk Kim 已提交
2468 2469
		return false;

A
Al Viro 已提交
2470
	return S_ISREG(inode->i_mode);
J
Jaegeuk Kim 已提交
2471 2472
}

2473 2474
static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
2475
{
J
Jaegeuk Kim 已提交
2476
#ifdef CONFIG_F2FS_FAULT_INJECTION
2477 2478
	if (time_to_inject(sbi, FAULT_KMALLOC)) {
		f2fs_show_injection_info(FAULT_KMALLOC);
J
Jaegeuk Kim 已提交
2479
		return NULL;
2480
	}
J
Jaegeuk Kim 已提交
2481
#endif
2482 2483 2484
	return kmalloc(size, flags);
}

C
Chao Yu 已提交
2485 2486 2487 2488 2489 2490
static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
{
	return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
}

C
Chao Yu 已提交
2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508
static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
{
#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(sbi, FAULT_KVMALLOC)) {
		f2fs_show_injection_info(FAULT_KVMALLOC);
		return NULL;
	}
#endif
	return kvmalloc(size, flags);
}

static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
{
	return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
}

2509
static inline int get_extra_isize(struct inode *inode)
C
Chao Yu 已提交
2510
{
2511
	return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
C
Chao Yu 已提交
2512 2513
}

C
Chao Yu 已提交
2514 2515 2516 2517 2518
static inline int get_inline_xattr_addrs(struct inode *inode)
{
	return F2FS_I(inode)->i_inline_xattr_size;
}

2519
#define get_inode_mode(i) \
2520
	((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2521 2522
	 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))

2523 2524 2525 2526
#define F2FS_TOTAL_EXTRA_ATTR_SIZE			\
	(offsetof(struct f2fs_inode, i_extra_end) -	\
	offsetof(struct f2fs_inode, i_extra_isize))	\

C
Chao Yu 已提交
2527 2528 2529 2530 2531 2532
#define F2FS_OLD_ATTRIBUTE_SIZE	(offsetof(struct f2fs_inode, i_addr))
#define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field)		\
		((offsetof(typeof(*f2fs_inode), field) +	\
		sizeof((f2fs_inode)->field))			\
		<= (F2FS_OLD_ATTRIBUTE_SIZE + extra_isize))	\

C
Chao Yu 已提交
2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557
static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
{
	int i;

	spin_lock(&sbi->iostat_lock);
	for (i = 0; i < NR_IO_TYPE; i++)
		sbi->write_iostat[i] = 0;
	spin_unlock(&sbi->iostat_lock);
}

static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
			enum iostat_type type, unsigned long long io_bytes)
{
	if (!sbi->iostat_enable)
		return;
	spin_lock(&sbi->iostat_lock);
	sbi->write_iostat[type] += io_bytes;

	if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
		sbi->write_iostat[APP_BUFFERED_IO] =
			sbi->write_iostat[APP_WRITE_IO] -
			sbi->write_iostat[APP_DIRECT_IO];
	spin_unlock(&sbi->iostat_lock);
}

2558 2559 2560
/*
 * file.c
 */
2561 2562 2563 2564
int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
void truncate_data_blocks(struct dnode_of_data *dn);
int truncate_blocks(struct inode *inode, u64 from, bool lock);
int f2fs_truncate(struct inode *inode);
2565 2566
int f2fs_getattr(const struct path *path, struct kstat *stat,
			u32 request_mask, unsigned int flags);
2567 2568
int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2569
void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2570
int f2fs_precache_extents(struct inode *inode);
2571 2572
long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
2573
int f2fs_pin_file_control(struct inode *inode, bool inc);
2574 2575 2576 2577

/*
 * inode.c
 */
2578
void f2fs_set_inode_flags(struct inode *inode);
C
Chao Yu 已提交
2579 2580
bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
2581 2582 2583
struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
2584 2585
void update_inode(struct inode *inode, struct page *node_page);
void update_inode_page(struct inode *inode);
2586 2587 2588
int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
void f2fs_evict_inode(struct inode *inode);
void handle_failed_inode(struct inode *inode);
2589 2590 2591 2592 2593 2594 2595 2596 2597

/*
 * namei.c
 */
struct dentry *f2fs_get_parent(struct dentry *child);

/*
 * dir.c
 */
2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636
void set_de_type(struct f2fs_dir_entry *de, umode_t mode);
unsigned char get_de_type(struct f2fs_dir_entry *de);
struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *fname,
			f2fs_hash_t namehash, int *max_slots,
			struct f2fs_dentry_ptr *d);
int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
			unsigned int start_pos, struct fscrypt_str *fstr);
void do_make_empty_dir(struct inode *inode, struct inode *parent,
			struct f2fs_dentry_ptr *d);
struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
			const struct qstr *new_name,
			const struct qstr *orig_name, struct page *dpage);
void update_parent_metadata(struct inode *dir, struct inode *inode,
			unsigned int current_depth);
int room_for_filename(const void *bitmap, int slots, int max_slots);
void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
			struct fscrypt_name *fname, struct page **res_page);
struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
			const struct qstr *child, struct page **res_page);
struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
			struct page **page);
void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
			struct page *page, struct inode *inode);
void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
			const struct qstr *name, f2fs_hash_t name_hash,
			unsigned int bit_pos);
int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
			const struct qstr *orig_name,
			struct inode *inode, nid_t ino, umode_t mode);
int __f2fs_do_add_link(struct inode *dir, struct fscrypt_name *fname,
			struct inode *inode, nid_t ino, umode_t mode);
int __f2fs_add_link(struct inode *dir, const struct qstr *name,
			struct inode *inode, nid_t ino, umode_t mode);
void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
			struct inode *dir, struct inode *inode);
int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
bool f2fs_empty_dir(struct inode *dir);
2637

2638 2639
static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
{
2640
	return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2641
				inode, inode->i_ino, inode->i_mode);
2642 2643
}

2644 2645 2646
/*
 * super.c
 */
2647 2648
int f2fs_inode_dirtied(struct inode *inode, bool sync);
void f2fs_inode_synced(struct inode *inode);
J
Jaegeuk Kim 已提交
2649
int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
C
Chao Yu 已提交
2650
void f2fs_quota_off_umount(struct super_block *sb);
2651 2652
int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
int f2fs_sync_fs(struct super_block *sb, int sync);
2653
extern __printf(3, 4)
2654
void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2655
int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2656 2657 2658 2659

/*
 * hash.c
 */
2660 2661
f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
				struct fscrypt_name *fname);
2662 2663 2664 2665 2666 2667 2668

/*
 * node.c
 */
struct dnode_of_data;
struct node_info;

2669 2670 2671 2672 2673 2674 2675 2676
bool available_free_memory(struct f2fs_sb_info *sbi, int type);
int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni);
pgoff_t get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
int truncate_inode_blocks(struct inode *inode, pgoff_t from);
2677
int truncate_xattr_node(struct inode *inode);
2678 2679 2680
int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino);
int remove_inode_page(struct inode *inode);
struct page *new_inode_page(struct inode *inode);
Y
Yunlei He 已提交
2681
struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs);
2682 2683 2684 2685 2686 2687
void ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
struct page *get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
struct page *get_node_page_ra(struct page *parent, int start);
void move_node_page(struct page *node_page, int gc_type);
int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
			struct writeback_control *wbc, bool atomic);
2688
int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
C
Chao Yu 已提交
2689
			bool do_balance, enum iostat_type io_type);
2690
void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2691 2692 2693 2694 2695
bool alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
void recover_inline_xattr(struct inode *inode, struct page *page);
S
Sheng Yong 已提交
2696
int recover_xattr_data(struct inode *inode, struct page *page);
2697
int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2698
void restore_node_summary(struct f2fs_sb_info *sbi,
2699
			unsigned int segno, struct f2fs_summary_block *sum);
2700
void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2701 2702
int build_node_manager(struct f2fs_sb_info *sbi);
void destroy_node_manager(struct f2fs_sb_info *sbi);
2703
int __init create_node_manager_caches(void);
2704 2705 2706 2707 2708
void destroy_node_manager_caches(void);

/*
 * segment.c
 */
2709
bool need_SSR(struct f2fs_sb_info *sbi);
2710
void register_inmem_page(struct inode *inode, struct page *page);
J
Jaegeuk Kim 已提交
2711
void drop_inmem_pages_all(struct f2fs_sb_info *sbi);
2712
void drop_inmem_pages(struct inode *inode);
2713
void drop_inmem_page(struct inode *inode, struct page *page);
2714 2715 2716
int commit_inmem_pages(struct inode *inode);
void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
C
Chao Yu 已提交
2717
int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
2718
int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2719
int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
2720 2721 2722
void destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
bool is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
C
Chao Yu 已提交
2723 2724
void init_discard_policy(struct discard_policy *dpolicy, int discard_type,
						unsigned int granularity);
2725
void drop_discard_cmd(struct f2fs_sb_info *sbi);
2726
void stop_discard_thread(struct f2fs_sb_info *sbi);
2727
bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2728 2729 2730 2731 2732 2733 2734 2735
void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc);
void release_discard_addrs(struct f2fs_sb_info *sbi);
int npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
void allocate_new_segments(struct f2fs_sb_info *sbi);
int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
bool exist_trim_candidates(struct f2fs_sb_info *sbi, struct cp_control *cpc);
struct page *get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
void update_meta_page(struct f2fs_sb_info *sbi, void *src, block_t blk_addr);
C
Chao Yu 已提交
2736 2737
void write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
						enum iostat_type io_type);
2738 2739
void write_node_page(unsigned int nid, struct f2fs_io_info *fio);
void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio);
2740
int rewrite_data_page(struct f2fs_io_info *fio);
2741 2742 2743 2744 2745 2746 2747 2748 2749
void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
			block_t old_blkaddr, block_t new_blkaddr,
			bool recover_curseg, bool recover_newaddr);
void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
			block_t old_addr, block_t new_addr,
			unsigned char version, bool recover_curseg,
			bool recover_newaddr);
void allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
			block_t old_blkaddr, block_t *new_blkaddr,
2750 2751
			struct f2fs_summary *sum, int type,
			struct f2fs_io_info *fio, bool add_list);
2752 2753
void f2fs_wait_on_page_writeback(struct page *page,
			enum page_type type, bool ordered);
2754
void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr);
2755 2756 2757 2758 2759 2760 2761
void write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
int lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
			unsigned int val, int alloc);
void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
int build_segment_manager(struct f2fs_sb_info *sbi);
void destroy_segment_manager(struct f2fs_sb_info *sbi);
2762 2763
int __init create_segment_manager_caches(void);
void destroy_segment_manager_caches(void);
2764
int rw_hint_to_seg_type(enum rw_hint hint);
2765 2766 2767 2768

/*
 * checkpoint.c
 */
2769 2770 2771 2772 2773 2774 2775 2776 2777
void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
struct page *grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
struct page *get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
struct page *get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
bool is_valid_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr, int type);
int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
			int type, bool sync);
void ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
long sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
C
Chao Yu 已提交
2778
			long nr_to_write, enum iostat_type io_type);
2779 2780 2781 2782
void add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
void remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
void release_ino_entry(struct f2fs_sb_info *sbi, bool all);
bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
C
Chao Yu 已提交
2783 2784 2785 2786
void set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
					unsigned int devidx, int type);
bool is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
					unsigned int devidx, int type);
2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798
int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
int acquire_orphan_inode(struct f2fs_sb_info *sbi);
void release_orphan_inode(struct f2fs_sb_info *sbi);
void add_orphan_inode(struct inode *inode);
void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
int recover_orphan_inodes(struct f2fs_sb_info *sbi);
int get_valid_checkpoint(struct f2fs_sb_info *sbi);
void update_dirty_page(struct inode *inode, struct page *page);
void remove_dirty_inode(struct inode *inode);
int sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
int write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
void init_ino_entry_info(struct f2fs_sb_info *sbi);
2799
int __init create_checkpoint_caches(void);
2800 2801 2802 2803 2804
void destroy_checkpoint_caches(void);

/*
 * data.c
 */
2805 2806
void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
2807
				struct inode *inode, nid_t ino, pgoff_t idx,
2808 2809
				enum page_type type);
void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2810
int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2811
int f2fs_submit_page_write(struct f2fs_io_info *fio);
2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833
struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
			block_t blk_addr, struct bio *bio);
int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
void set_data_blkaddr(struct dnode_of_data *dn);
void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
int reserve_new_block(struct dnode_of_data *dn);
int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
struct page *get_read_data_page(struct inode *inode, pgoff_t index,
			int op_flags, bool for_write);
struct page *find_data_page(struct inode *inode, pgoff_t index);
struct page *get_lock_data_page(struct inode *inode, pgoff_t index,
			bool for_write);
struct page *get_new_data_page(struct inode *inode,
			struct page *ipage, pgoff_t index, bool new_i_size);
int do_write_data_page(struct f2fs_io_info *fio);
int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
			int create, int flag);
int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
			u64 start, u64 len);
C
Chao Yu 已提交
2834 2835
bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
bool should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
2836
void f2fs_set_page_dirty_nobuffers(struct page *page);
C
Chao Yu 已提交
2837 2838 2839
int __f2fs_write_data_pages(struct address_space *mapping,
						struct writeback_control *wbc,
						enum iostat_type io_type);
2840 2841 2842
void f2fs_invalidate_page(struct page *page, unsigned int offset,
			unsigned int length);
int f2fs_release_page(struct page *page, gfp_t wait);
2843
#ifdef CONFIG_MIGRATION
2844 2845
int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
			struct page *page, enum migrate_mode mode);
2846
#endif
2847 2848 2849 2850

/*
 * gc.c
 */
2851 2852 2853
int start_gc_thread(struct f2fs_sb_info *sbi);
void stop_gc_thread(struct f2fs_sb_info *sbi);
block_t start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
2854 2855
int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
			unsigned int segno);
2856
void build_gc_manager(struct f2fs_sb_info *sbi);
2857 2858 2859 2860

/*
 * recovery.c
 */
2861 2862
int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2863 2864 2865 2866 2867 2868 2869 2870 2871 2872

/*
 * debug.c
 */
#ifdef CONFIG_F2FS_STAT_FS
struct f2fs_stat_info {
	struct list_head stat_list;
	struct f2fs_sb_info *sbi;
	int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
	int main_area_segs, main_area_sections, main_area_zones;
2873 2874
	unsigned long long hit_largest, hit_cached, hit_rbtree;
	unsigned long long hit_total, total_ext;
J
Jaegeuk Kim 已提交
2875
	int ext_tree, zombie_tree, ext_node;
2876 2877
	int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
	int ndirty_data, ndirty_qdata;
2878
	int inmem_pages;
2879
	unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
2880 2881
	int nats, dirty_nats, sits, dirty_sits;
	int free_nids, avail_nids, alloc_nids;
2882
	int total_count, utilization;
C
Chao Yu 已提交
2883
	int bg_gc, nr_wb_cp_data, nr_wb_data;
C
Chao Yu 已提交
2884 2885
	int nr_flushing, nr_flushed, flush_list_empty;
	int nr_discarding, nr_discarded;
C
Chao Yu 已提交
2886
	int nr_discard_cmd;
C
Chao Yu 已提交
2887
	unsigned int undiscard_blks;
2888
	int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2889
	int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2890
	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2891 2892 2893 2894
	unsigned int bimodal, avg_vblocks;
	int util_free, util_valid, util_invalid;
	int rsvd_segs, overp_segs;
	int dirty_count, node_pages, meta_pages;
2895
	int prefree_count, call_count, cp_count, bg_cp_count;
2896
	int tot_segs, node_segs, data_segs, free_segs, free_secs;
2897
	int bg_node_segs, bg_data_segs;
2898
	int tot_blks, data_blks, node_blks;
2899
	int bg_data_blks, bg_node_blks;
2900 2901 2902 2903 2904 2905
	int curseg[NR_CURSEG_TYPE];
	int cursec[NR_CURSEG_TYPE];
	int curzone[NR_CURSEG_TYPE];

	unsigned int segment_count[2];
	unsigned int block_count[2];
2906
	unsigned int inplace_count;
C
Chao Yu 已提交
2907
	unsigned long long base_mem, cache_mem, page_mem;
2908 2909
};

2910 2911
static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
{
C
Chris Fries 已提交
2912
	return (struct f2fs_stat_info *)sbi->stat_info;
2913 2914
}

2915
#define stat_inc_cp_count(si)		((si)->cp_count++)
2916
#define stat_inc_bg_cp_count(si)	((si)->bg_cp_count++)
2917 2918
#define stat_inc_call_count(si)		((si)->call_count++)
#define stat_inc_bggc_count(sbi)	((sbi)->bg_gc++)
C
Chao Yu 已提交
2919 2920
#define stat_inc_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]++)
#define stat_dec_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]--)
2921 2922 2923 2924
#define stat_inc_total_hit(sbi)		(atomic64_inc(&(sbi)->total_hit_ext))
#define stat_inc_rbtree_node_hit(sbi)	(atomic64_inc(&(sbi)->read_hit_rbtree))
#define stat_inc_largest_node_hit(sbi)	(atomic64_inc(&(sbi)->read_hit_largest))
#define stat_inc_cached_node_hit(sbi)	(atomic64_inc(&(sbi)->read_hit_cached))
C
Chao Yu 已提交
2925 2926 2927 2928 2929 2930 2931 2932 2933 2934
#define stat_inc_inline_xattr(inode)					\
	do {								\
		if (f2fs_has_inline_xattr(inode))			\
			(atomic_inc(&F2FS_I_SB(inode)->inline_xattr));	\
	} while (0)
#define stat_dec_inline_xattr(inode)					\
	do {								\
		if (f2fs_has_inline_xattr(inode))			\
			(atomic_dec(&F2FS_I_SB(inode)->inline_xattr));	\
	} while (0)
2935 2936 2937
#define stat_inc_inline_inode(inode)					\
	do {								\
		if (f2fs_has_inline_data(inode))			\
2938
			(atomic_inc(&F2FS_I_SB(inode)->inline_inode));	\
2939 2940 2941 2942
	} while (0)
#define stat_dec_inline_inode(inode)					\
	do {								\
		if (f2fs_has_inline_data(inode))			\
2943
			(atomic_dec(&F2FS_I_SB(inode)->inline_inode));	\
2944
	} while (0)
2945 2946 2947
#define stat_inc_inline_dir(inode)					\
	do {								\
		if (f2fs_has_inline_dentry(inode))			\
2948
			(atomic_inc(&F2FS_I_SB(inode)->inline_dir));	\
2949 2950 2951 2952
	} while (0)
#define stat_dec_inline_dir(inode)					\
	do {								\
		if (f2fs_has_inline_dentry(inode))			\
2953
			(atomic_dec(&F2FS_I_SB(inode)->inline_dir));	\
2954
	} while (0)
2955 2956 2957 2958
#define stat_inc_seg_type(sbi, curseg)					\
		((sbi)->segment_count[(curseg)->alloc_type]++)
#define stat_inc_block_count(sbi, curseg)				\
		((sbi)->block_count[(curseg)->alloc_type]++)
2959 2960
#define stat_inc_inplace_blocks(sbi)					\
		(atomic_inc(&(sbi)->inplace_count))
2961
#define stat_inc_atomic_write(inode)					\
2962
		(atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
2963
#define stat_dec_atomic_write(inode)					\
2964
		(atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
2965 2966 2967 2968 2969 2970 2971
#define stat_update_max_atomic_write(inode)				\
	do {								\
		int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt);	\
		int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt);	\
		if (cur > max)						\
			atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur);	\
	} while (0)
2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982
#define stat_inc_volatile_write(inode)					\
		(atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
#define stat_dec_volatile_write(inode)					\
		(atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
#define stat_update_max_volatile_write(inode)				\
	do {								\
		int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt);	\
		int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt);	\
		if (cur > max)						\
			atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur);	\
	} while (0)
2983
#define stat_inc_seg_count(sbi, type, gc_type)				\
2984
	do {								\
2985
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
2986 2987
		si->tot_segs++;						\
		if ((type) == SUM_TYPE_DATA) {				\
2988
			si->data_segs++;				\
2989 2990
			si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0;	\
		} else {						\
2991
			si->node_segs++;				\
2992 2993
			si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0;	\
		}							\
2994 2995 2996
	} while (0)

#define stat_inc_tot_blk_count(si, blks)				\
2997
	((si)->tot_blks += (blks))
2998

2999
#define stat_inc_data_blk_count(sbi, blks, gc_type)			\
3000
	do {								\
3001
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3002 3003
		stat_inc_tot_blk_count(si, blks);			\
		si->data_blks += (blks);				\
3004
		si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3005 3006
	} while (0)

3007
#define stat_inc_node_blk_count(sbi, blks, gc_type)			\
3008
	do {								\
3009
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3010 3011
		stat_inc_tot_blk_count(si, blks);			\
		si->node_blks += (blks);				\
3012
		si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3013 3014
	} while (0)

3015 3016
int f2fs_build_stats(struct f2fs_sb_info *sbi);
void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3017
int __init f2fs_create_root_stats(void);
3018
void f2fs_destroy_root_stats(void);
3019
#else
3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048
#define stat_inc_cp_count(si)				do { } while (0)
#define stat_inc_bg_cp_count(si)			do { } while (0)
#define stat_inc_call_count(si)				do { } while (0)
#define stat_inc_bggc_count(si)				do { } while (0)
#define stat_inc_dirty_inode(sbi, type)			do { } while (0)
#define stat_dec_dirty_inode(sbi, type)			do { } while (0)
#define stat_inc_total_hit(sb)				do { } while (0)
#define stat_inc_rbtree_node_hit(sb)			do { } while (0)
#define stat_inc_largest_node_hit(sbi)			do { } while (0)
#define stat_inc_cached_node_hit(sbi)			do { } while (0)
#define stat_inc_inline_xattr(inode)			do { } while (0)
#define stat_dec_inline_xattr(inode)			do { } while (0)
#define stat_inc_inline_inode(inode)			do { } while (0)
#define stat_dec_inline_inode(inode)			do { } while (0)
#define stat_inc_inline_dir(inode)			do { } while (0)
#define stat_dec_inline_dir(inode)			do { } while (0)
#define stat_inc_atomic_write(inode)			do { } while (0)
#define stat_dec_atomic_write(inode)			do { } while (0)
#define stat_update_max_atomic_write(inode)		do { } while (0)
#define stat_inc_volatile_write(inode)			do { } while (0)
#define stat_dec_volatile_write(inode)			do { } while (0)
#define stat_update_max_volatile_write(inode)		do { } while (0)
#define stat_inc_seg_type(sbi, curseg)			do { } while (0)
#define stat_inc_block_count(sbi, curseg)		do { } while (0)
#define stat_inc_inplace_blocks(sbi)			do { } while (0)
#define stat_inc_seg_count(sbi, type, gc_type)		do { } while (0)
#define stat_inc_tot_blk_count(si, blks)		do { } while (0)
#define stat_inc_data_blk_count(sbi, blks, gc_type)	do { } while (0)
#define stat_inc_node_blk_count(sbi, blks, gc_type)	do { } while (0)
3049 3050 3051

static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3052
static inline int __init f2fs_create_root_stats(void) { return 0; }
3053
static inline void f2fs_destroy_root_stats(void) { }
3054 3055 3056 3057 3058 3059 3060 3061 3062 3063
#endif

extern const struct file_operations f2fs_dir_operations;
extern const struct file_operations f2fs_file_operations;
extern const struct inode_operations f2fs_file_inode_operations;
extern const struct address_space_operations f2fs_dblock_aops;
extern const struct address_space_operations f2fs_node_aops;
extern const struct address_space_operations f2fs_meta_aops;
extern const struct inode_operations f2fs_dir_inode_operations;
extern const struct inode_operations f2fs_symlink_inode_operations;
3064
extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3065
extern const struct inode_operations f2fs_special_inode_operations;
J
Jaegeuk Kim 已提交
3066
extern struct kmem_cache *inode_entry_slab;
3067

3068 3069 3070
/*
 * inline.c
 */
3071 3072 3073
bool f2fs_may_inline_data(struct inode *inode);
bool f2fs_may_inline_dentry(struct inode *inode);
void read_inline_data(struct page *page, struct page *ipage);
3074
void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094
int f2fs_read_inline_data(struct inode *inode, struct page *page);
int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
int f2fs_convert_inline_inode(struct inode *inode);
int f2fs_write_inline_data(struct inode *inode, struct page *page);
bool recover_inline_data(struct inode *inode, struct page *npage);
struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
			struct fscrypt_name *fname, struct page **res_page);
int make_empty_inline_dir(struct inode *inode, struct inode *parent,
			struct page *ipage);
int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
			const struct qstr *orig_name,
			struct inode *inode, nid_t ino, umode_t mode);
void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
			struct inode *dir, struct inode *inode);
bool f2fs_empty_inline_dir(struct inode *dir);
int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
			struct fscrypt_str *fstr);
int f2fs_inline_data_fiemap(struct inode *inode,
			struct fiemap_extent_info *fieinfo,
			__u64 start, __u64 len);
3095

3096 3097 3098
/*
 * shrinker.c
 */
3099 3100 3101 3102 3103 3104
unsigned long f2fs_shrink_count(struct shrinker *shrink,
			struct shrink_control *sc);
unsigned long f2fs_shrink_scan(struct shrinker *shrink,
			struct shrink_control *sc);
void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3105

3106 3107 3108
/*
 * extent_cache.c
 */
3109 3110 3111 3112 3113 3114 3115 3116 3117 3118
struct rb_entry *__lookup_rb_tree(struct rb_root *root,
				struct rb_entry *cached_re, unsigned int ofs);
struct rb_node **__lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
				struct rb_root *root, struct rb_node **parent,
				unsigned int ofs);
struct rb_entry *__lookup_rb_tree_ret(struct rb_root *root,
		struct rb_entry *cached_re, unsigned int ofs,
		struct rb_entry **prev_entry, struct rb_entry **next_entry,
		struct rb_node ***insert_p, struct rb_node **insert_parent,
		bool force);
3119 3120
bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
						struct rb_root *root);
3121 3122 3123 3124 3125 3126 3127 3128
unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
void f2fs_drop_extent_tree(struct inode *inode);
unsigned int f2fs_destroy_extent_node(struct inode *inode);
void f2fs_destroy_extent_tree(struct inode *inode);
bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
			struct extent_info *ei);
void f2fs_update_extent_cache(struct dnode_of_data *dn);
C
Chao Yu 已提交
3129
void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3130 3131
			pgoff_t fofs, block_t blkaddr, unsigned int len);
void init_extent_cache_info(struct f2fs_sb_info *sbi);
3132 3133 3134
int __init create_extent_cache(void);
void destroy_extent_cache(void);

3135 3136 3137
/*
 * sysfs.c
 */
3138 3139 3140 3141
int __init f2fs_init_sysfs(void);
void f2fs_exit_sysfs(void);
int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3142

3143 3144 3145
/*
 * crypto support
 */
3146
static inline bool f2fs_encrypted_inode(struct inode *inode)
3147 3148 3149 3150
{
	return file_is_encrypt(inode);
}

3151 3152 3153 3154 3155
static inline bool f2fs_encrypted_file(struct inode *inode)
{
	return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode);
}

3156 3157 3158 3159
static inline void f2fs_set_encrypted_inode(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
	file_set_encrypt(inode);
3160
	inode->i_flags |= S_ENCRYPTED;
3161 3162 3163 3164 3165
#endif
}

static inline bool f2fs_bio_encrypted(struct bio *bio)
{
3166
	return bio->bi_private != NULL;
3167 3168 3169 3170 3171 3172
}

static inline int f2fs_sb_has_crypto(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
}
3173

3174
static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
3175
{
3176
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
3177 3178
}

3179 3180 3181 3182 3183
static inline int f2fs_sb_has_extra_attr(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_EXTRA_ATTR);
}

C
Chao Yu 已提交
3184 3185 3186 3187 3188
static inline int f2fs_sb_has_project_quota(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_PRJQUOTA);
}

C
Chao Yu 已提交
3189 3190 3191 3192 3193
static inline int f2fs_sb_has_inode_chksum(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CHKSUM);
}

C
Chao Yu 已提交
3194 3195 3196 3197 3198
static inline int f2fs_sb_has_flexible_inline_xattr(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
}

J
Jaegeuk Kim 已提交
3199 3200 3201 3202 3203
static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
}

C
Chao Yu 已提交
3204 3205 3206 3207 3208
static inline int f2fs_sb_has_inode_crtime(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_INODE_CRTIME);
}

3209 3210
#ifdef CONFIG_BLK_DEV_ZONED
static inline int get_blkz_type(struct f2fs_sb_info *sbi,
J
Jaegeuk Kim 已提交
3211
			struct block_device *bdev, block_t blkaddr)
3212 3213
{
	unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
J
Jaegeuk Kim 已提交
3214
	int i;
3215

J
Jaegeuk Kim 已提交
3216 3217 3218 3219
	for (i = 0; i < sbi->s_ndevs; i++)
		if (FDEV(i).bdev == bdev)
			return FDEV(i).blkz_type[zno];
	return -EINVAL;
3220 3221 3222
}
#endif

3223
static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
3224
{
3225 3226 3227
	struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);

	return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);
3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244
}

static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
{
	clear_opt(sbi, ADAPTIVE);
	clear_opt(sbi, LFS);

	switch (mt) {
	case F2FS_MOUNT_ADAPTIVE:
		set_opt(sbi, ADAPTIVE);
		break;
	case F2FS_MOUNT_LFS:
		set_opt(sbi, LFS);
		break;
	}
}

3245 3246 3247
static inline bool f2fs_may_encrypt(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
A
Al Viro 已提交
3248
	umode_t mode = inode->i_mode;
3249 3250 3251 3252 3253 3254 3255

	return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
#else
	return 0;
#endif
}

3256
#endif