f2fs.h 99.6 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_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 F2FS_INLINE_XATTR_ADDRS(inode)	get_inline_xattr_addrs(inode)
#define MAX_INLINE_DATA(inode)	(sizeof(__le32) *			\
				(CUR_ADDRS_PER_INODE(inode) -		\
				F2FS_INLINE_XATTR_ADDRS(inode) -	\
				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)
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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,
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};
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571 572 573 574
/*
 * 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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};

static inline void get_extent_info(struct extent_info *ext,
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					struct f2fs_extent *i_ext)
643
{
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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);
647 648 649 650 651 652
}

static inline void set_raw_extent(struct extent_info *ext,
					struct f2fs_extent *i_ext)
{
	i_ext->fofs = cpu_to_le32(ext->fofs);
653
	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;
}

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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);
}

683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701
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);
}

702
extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
703 704
static inline void __try_update_largest_extent(struct inode *inode,
			struct extent_tree *et, struct extent_node *en)
705
{
706
	if (en->ei.len > et->largest.len) {
707
		et->largest = en->ei;
708
		f2fs_mark_inode_dirty_sync(inode, true);
709
	}
710 711
}

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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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};

721 722 723
struct f2fs_nm_info {
	block_t nat_blkaddr;		/* base disk address of NAT */
	nid_t max_nid;			/* maximum possible node ids */
724
	nid_t available_nids;		/* # of available node ids */
725
	nid_t next_scan_nid;		/* the next nid to be scanned */
726
	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 */
729 730 731

	/* NAT cache management */
	struct radix_tree_root nat_root;/* root of the nat entry cache */
732
	struct radix_tree_root nat_set_root;/* root of the nat set cache */
733
	struct rw_semaphore nat_tree_lock;	/* protect nat_tree_lock */
734
	struct list_head nat_entries;	/* cached nat entry list (clean) */
735
	unsigned int nat_cnt;		/* the # of cached nat entries */
736
	unsigned int dirty_nat_cnt;	/* total num of nat entries in set */
737
	unsigned int nat_blocks;	/* # of nat blocks */
738 739

	/* free node ids management */
740
	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 */
744
	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;
747
	unsigned short *free_nid_count;	/* free nid count of NAT block */
748 749 750

	/* for checkpoint */
	char *nat_bitmap;		/* NAT bitmap pointer */
751 752 753 754 755

	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 */
756 757 758
#ifdef CONFIG_F2FS_CHECK_FS
	char *nat_bitmap_mir;		/* NAT bitmap mirror */
#endif
759 760 761 762 763 764 765 766 767 768 769 770 771 772 773
	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 */
774
	bool node_changed;		/* is node block changed */
775 776
	char cur_level;			/* level of hole node page */
	char max_level;			/* level of current page located */
777 778 779 780 781 782
	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)
{
783
	memset(dn, 0, sizeof(*dn));
784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813
	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 */
814
	NO_CHECK_TYPE,
815 816
};

817 818
struct flush_cmd {
	struct completion wait;
819
	struct llist_node llnode;
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	nid_t ino;
821 822 823
	int ret;
};

824 825 826
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 */
829 830
	struct llist_head issue_list;		/* list for command issue */
	struct llist_node *dispatch_list;	/* list for command dispatch */
831 832
};

833 834 835 836 837 838
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 */

841 842 843 844 845 846 847 848
	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 */
849 850 851

	/* a threshold to reclaim prefree segments */
	unsigned int rec_prefree_segments;
852

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

856 857
	struct list_head sit_entry_set;	/* sit entry set list */

858 859
	unsigned int ipu_policy;	/* in-place-update policy */
	unsigned int min_ipu_util;	/* in-place-update threshold */
860
	unsigned int min_fsync_blocks;	/* threshold for fsync */
861
	unsigned int min_hot_blocks;	/* threshold for hot block allocation */
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	unsigned int min_ssr_sections;	/* threshold to trigger SSR allocation */
863 864

	/* for flush command control */
865
	struct flush_cmd_control *fcc_info;
866

867 868
	/* for discard command control */
	struct discard_cmd_control *dcc_info;
869 870 871 872 873 874 875 876 877 878 879
};

/*
 * 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.
 */
880
#define WB_DATA_TYPE(p)	(__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
881 882
enum count_type {
	F2FS_DIRTY_DENTS,
883
	F2FS_DIRTY_DATA,
884
	F2FS_DIRTY_QDATA,
885 886
	F2FS_DIRTY_NODES,
	F2FS_DIRTY_META,
887
	F2FS_INMEM_PAGES,
888
	F2FS_DIRTY_IMETA,
889 890
	F2FS_WB_CP_DATA,
	F2FS_WB_DATA,
891 892 893 894
	NR_COUNT_TYPE,
};

/*
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 * The below are the page types of bios used in submit_bio().
896 897 898 899 900 901 902 903 904
 * 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.
 */
905
#define PAGE_TYPE_OF_BIO(type)	((type) > META ? META : (type))
906 907 908 909 910 911
enum page_type {
	DATA,
	NODE,
	META,
	NR_PAGE_TYPE,
	META_FLUSH,
912 913
	INMEM,		/* the below types are used by tracepoints only. */
	INMEM_DROP,
914
	INMEM_INVALIDATE,
915
	INMEM_REVOKE,
916 917
	IPU,
	OPU,
918 919
};

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

927 928 929 930 931 932
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,
943
	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 {
964
	struct f2fs_sb_info *sbi;	/* f2fs_sb_info pointer */
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	nid_t ino;		/* inode number */
966
	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_ */
969
	int op_flags;		/* req_flag_bits */
970
	block_t new_blkaddr;	/* new block address to be written */
971
	block_t old_blkaddr;	/* old block address before Cow */
972
	struct page *page;	/* page to be written */
973
	struct page *encrypted_page;	/* encrypted page */
974
	struct list_head list;		/* serialize IOs */
975
	bool submitted;		/* indicate IO submission */
976
	int need_lock;		/* indicate we need to lock cp_rwsem */
977
	bool in_list;		/* indicate fio is in io_list */
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	enum iostat_type io_type;	/* io type */
979
	struct writeback_control *io_wbc; /* writeback control */
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};

982
#define is_read_io(rw) ((rw) == READ)
983
struct f2fs_bio_info {
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	struct f2fs_sb_info *sbi;	/* f2fs superblock */
985 986
	struct bio *bio;		/* bios to merge */
	sector_t last_block_in_bio;	/* last block number */
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	struct f2fs_io_info fio;	/* store buffered io info. */
988
	struct rw_semaphore io_rwsem;	/* blocking op for bio */
989 990
	spinlock_t io_lock;		/* serialize DATA/NODE IOs */
	struct list_head io_list;	/* track fios */
991 992
};

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993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
#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
};

1007 1008 1009
enum inode_type {
	DIR_INODE,			/* for dirty dir inode */
	FILE_INODE,			/* for dirty regular/symlink inode */
1010
	DIRTY_META,			/* for all dirtied inode metadata */
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	ATOMIC_FILE,			/* for all atomic files */
1012 1013 1014
	NR_INODE_TYPE,
};

1015 1016 1017 1018 1019 1020 1021 1022
/* 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 */
};

1023 1024 1025 1026 1027 1028
/* 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 */
1029
	SBI_NEED_SB_WRITE,			/* need to recover superblock */
1030
	SBI_NEED_CP,				/* need to checkpoint */
1031 1032
};

1033 1034
enum {
	CP_TIME,
1035
	REQ_TIME,
1036 1037 1038
	MAX_TIME,
};

1039 1040
struct f2fs_sb_info {
	struct super_block *sb;			/* pointer to VFS super block */
1041
	struct proc_dir_entry *s_proc;		/* proc entry */
1042
	struct f2fs_super_block *raw_super;	/* raw super block pointer */
1043
	int valid_super_block;			/* valid super block no */
1044
	unsigned long s_flag;				/* flags for sbi */
1045

1046 1047 1048 1049 1050
#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

1051 1052 1053 1054 1055 1056
	/* 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 */
1057 1058

	/* for bio operations */
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	struct f2fs_bio_info *write_io[NR_PAGE_TYPE];	/* for write bios */
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1060 1061
	struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
						/* bio ordering for NODE/DATA */
1062 1063
	int write_io_size_bits;			/* Write IO size bits */
	mempool_t *write_io_dummy;		/* Dummy pages */
1064 1065 1066

	/* for checkpoint */
	struct f2fs_checkpoint *ckpt;		/* raw checkpoint pointer */
1067
	int cur_cp_pack;			/* remain current cp pack */
1068
	spinlock_t cp_lock;			/* for flag in ckpt */
1069
	struct inode *meta_inode;		/* cache meta blocks */
1070
	struct mutex cp_mutex;			/* checkpoint procedure lock */
1071
	struct rw_semaphore cp_rwsem;		/* blocking FS operations */
1072
	struct rw_semaphore node_write;		/* locking node writes */
1073
	struct rw_semaphore node_change;	/* locking node change */
1074
	wait_queue_head_t cp_wait;
1075 1076
	unsigned long last_time[MAX_TIME];	/* to store time in jiffies */
	long interval_time[MAX_TIME];		/* to store thresholds */
1077

1078
	struct inode_management im[MAX_INO_ENTRY];      /* manage inode cache */
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	/* for orphan inode, use 0'th array */
1081
	unsigned int max_orphans;		/* max orphan inodes */
1082

1083 1084 1085
	/* 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 */
1086

1087 1088
	/* for extent tree cache */
	struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1089
	struct mutex extent_tree_lock;	/* locking extent radix tree */
1090 1091
	struct list_head extent_list;		/* lru list for shrinker */
	spinlock_t extent_lock;			/* locking extent lru list */
1092
	atomic_t total_ext_tree;		/* extent tree count */
1093
	struct list_head zombie_list;		/* extent zombie tree list */
1094
	atomic_t total_zombie_tree;		/* extent zombie tree count */
1095 1096
	atomic_t total_ext_node;		/* extent info count */

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	/* basic filesystem units */
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
	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 */
1112
	int active_logs;			/* # of active logs */
1113
	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 */
1116
	int readdir_ra;				/* readahead inode in readdir */
1117 1118 1119

	block_t user_block_count;		/* # of user blocks */
	block_t total_valid_block_count;	/* # of valid blocks */
1120
	block_t discard_blks;			/* discard command candidats */
1121
	block_t last_valid_block_count;		/* for recovery */
1122
	block_t reserved_blocks;		/* configurable reserved blocks */
1123
	block_t current_reserved_blocks;	/* current reserved blocks */
1124
	block_t root_reserved_blocks;		/* root reserved blocks */
1125 1126
	kuid_t s_resuid;			/* reserved blocks for uid */
	kgid_t s_resgid;			/* reserved blocks for gid */
1127

1128 1129
	unsigned int nquota_files;		/* # of quota sysfile */

1130
	u32 s_next_generation;			/* for NFS support */
1131 1132

	/* # of pages, see count_type */
1133
	atomic_t nr_pages[NR_COUNT_TYPE];
1134 1135
	/* # of allocated blocks */
	struct percpu_counter alloc_valid_block_count;
1136

1137 1138 1139
	/* writeback control */
	atomic_t wb_sync_req;			/* count # of WB_SYNC threads */

1140 1141 1142
	/* valid inode count */
	struct percpu_counter total_valid_inode_count;

1143 1144 1145 1146 1147
	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 */
1148
	unsigned int cur_victim_sec;		/* current victim section num */
1149

1150 1151 1152
	/* threshold for converting bg victims for fg */
	u64 fggc_threshold;

1153 1154 1155
	/* threshold for gc trials on pinned files */
	u64 gc_pin_file_threshold;

1156 1157 1158
	/* maximum # of trials to find a victim segment for SSR and GC */
	unsigned int max_victim_search;

1159 1160 1161 1162
	/*
	 * for stat information.
	 * one is for the LFS mode, and the other is for the SSR mode.
	 */
1163
#ifdef CONFIG_F2FS_STAT_FS
1164 1165 1166
	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 */
1167
	atomic_t inplace_count;		/* # of inplace update */
1168 1169 1170 1171
	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 */
1173 1174
	atomic_t inline_inode;			/* # of inline_data inodes */
	atomic_t inline_dir;			/* # of inline_dentry inodes */
1175
	atomic_t aw_cnt;			/* # of atomic writes */
1176
	atomic_t vw_cnt;			/* # of volatile writes */
1177
	atomic_t max_aw_cnt;			/* max # of atomic writes */
1178
	atomic_t max_vw_cnt;			/* max # of volatile writes */
1179
	int bg_gc;				/* background gc calls */
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	unsigned int ndirty_inode[NR_INODE_TYPE];	/* # of dirty inodes */
1181
#endif
1182
	spinlock_t stat_lock;			/* lock for stat operations */
1183

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

1189 1190 1191
	/* For sysfs suppport */
	struct kobject s_kobj;
	struct completion s_kobj_unregister;
1192 1193 1194

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

	/* 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;
1208

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

1212 1213 1214 1215
	/* For fault injection */
#ifdef CONFIG_F2FS_FAULT_INJECTION
	struct f2fs_fault_info fault_info;
#endif
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#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
1222 1223
};

1224
#ifdef CONFIG_F2FS_FAULT_INJECTION
1225 1226 1227 1228
#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))
1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247
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

1248 1249 1250 1251
/* 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)						 \
1252 1253
(((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) -		 \
		(s)->sectors_written_start) >> 1)
1254

1255 1256 1257 1258 1259 1260 1261
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;
1263 1264 1265 1266

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

1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
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);
}

1279 1280 1281
/*
 * 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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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);
}

1321 1322 1323 1324 1325 1326 1327 1328 1329 1330
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;
}

1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345
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);
}

1346 1347 1348 1349 1350 1351 1352 1353 1354 1355
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);
}

1356 1357 1358 1359 1360
static inline struct f2fs_node *F2FS_NODE(struct page *page)
{
	return (struct f2fs_node *)page_address(page);
}

1361 1362 1363 1364 1365
static inline struct f2fs_inode *F2FS_INODE(struct page *page)
{
	return &((struct f2fs_node *)page_address(page))->i;
}

1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
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;
}

1396 1397 1398 1399 1400
static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
{
	return sbi->node_inode->i_mapping;
}

1401 1402
static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
{
1403
	return test_bit(type, &sbi->s_flag);
1404 1405 1406
}

static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1407
{
1408
	set_bit(type, &sbi->s_flag);
1409 1410
}

1411
static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1412
{
1413
	clear_bit(type, &sbi->s_flag);
1414 1415
}

1416 1417 1418 1419 1420
static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
{
	return le64_to_cpu(cp->checkpoint_ver);
}

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1421 1422 1423 1424 1425 1426 1427
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;
}

1428 1429 1430 1431 1432 1433
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)));
}

1434
static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1435 1436
{
	unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1437

1438 1439 1440
	return ckpt_flags & f;
}

1441
static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1442
{
1443 1444 1445 1446 1447 1448 1449 1450
	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);
1451 1452 1453 1454
	ckpt_flags |= f;
	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
}

1455
static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1456
{
1457 1458 1459
	unsigned long flags;

	spin_lock_irqsave(&sbi->cp_lock, flags);
1460
	__set_ckpt_flags(F2FS_CKPT(sbi), f);
1461
	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1462 1463 1464 1465 1466 1467 1468
}

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);
1469 1470 1471 1472
	ckpt_flags &= (~f);
	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
}

1473 1474
static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
{
1475 1476 1477
	unsigned long flags;

	spin_lock_irqsave(&sbi->cp_lock, flags);
1478
	__clear_ckpt_flags(F2FS_CKPT(sbi), f);
1479
	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1480 1481
}

1482 1483
static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
{
1484 1485
	unsigned long flags;

1486 1487 1488
	set_sbi_flag(sbi, SBI_NEED_FSCK);

	if (lock)
1489
		spin_lock_irqsave(&sbi->cp_lock, flags);
1490 1491 1492 1493
	__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
	kfree(NM_I(sbi)->nat_bits);
	NM_I(sbi)->nat_bits = NULL;
	if (lock)
1494
		spin_unlock_irqrestore(&sbi->cp_lock, flags);
1495 1496 1497 1498 1499 1500 1501
}

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);

1502
	return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1503 1504
}

1505
static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1506
{
1507
	down_read(&sbi->cp_rwsem);
1508 1509
}

1510 1511 1512 1513 1514
static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
{
	return down_read_trylock(&sbi->cp_rwsem);
}

1515
static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1516
{
1517
	up_read(&sbi->cp_rwsem);
1518 1519
}

1520
static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1521
{
1522
	down_write(&sbi->cp_rwsem);
1523 1524
}

1525
static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1526
{
1527
	up_write(&sbi->cp_rwsem);
1528 1529
}

1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542
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)
{
1543
	return (reason & (CP_UMOUNT | CP_FASTBOOT));
1544 1545 1546 1547
}

static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
{
1548 1549
	return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
			is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1550 1551
}

1552 1553 1554
/*
 * Check whether the given nid is within node id range.
 */
1555
static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1556
{
1557 1558
	if (unlikely(nid < F2FS_ROOT_INO(sbi)))
		return -EINVAL;
1559
	if (unlikely(nid >= NM_I(sbi)->max_nid))
1560 1561
		return -EINVAL;
	return 0;
1562 1563 1564 1565 1566 1567 1568
}

/*
 * Check whether the inode has blocks or not
 */
static inline int F2FS_HAS_BLOCKS(struct inode *inode)
{
1569 1570
	block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;

1571
	return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1572 1573
}

1574 1575 1576 1577 1578
static inline bool f2fs_has_xattr_block(unsigned int ofs)
{
	return ofs == XATTR_NODE_OFFSET;
}

1579 1580
static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
					struct inode *inode)
1581
{
1582 1583
	if (!inode)
		return true;
1584 1585
	if (!test_opt(sbi, RESERVE_ROOT))
		return false;
1586 1587
	if (IS_NOQUOTA(inode))
		return true;
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597
	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
1598 1599
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,
1600
				 struct inode *inode, blkcnt_t *count)
1601
{
C
Chao Yu 已提交
1602
	blkcnt_t diff = 0, release = 0;
1603
	block_t avail_user_block_count;
C
Chao Yu 已提交
1604 1605 1606 1607 1608
	int ret;

	ret = dquot_reserve_block(inode, *count);
	if (ret)
		return ret;
1609

J
Jaegeuk Kim 已提交
1610
#ifdef CONFIG_F2FS_FAULT_INJECTION
1611 1612
	if (time_to_inject(sbi, FAULT_BLOCK)) {
		f2fs_show_injection_info(FAULT_BLOCK);
C
Chao Yu 已提交
1613 1614
		release = *count;
		goto enospc;
1615
	}
J
Jaegeuk Kim 已提交
1616
#endif
1617 1618 1619 1620 1621 1622
	/*
	 * 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));

1623 1624
	spin_lock(&sbi->stat_lock);
	sbi->total_valid_block_count += (block_t)(*count);
1625 1626
	avail_user_block_count = sbi->user_block_count -
					sbi->current_reserved_blocks;
1627

1628
	if (!__allow_reserved_blocks(sbi, inode))
1629 1630
		avail_user_block_count -= sbi->root_reserved_blocks;

1631 1632
	if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
		diff = sbi->total_valid_block_count - avail_user_block_count;
1633 1634
		if (diff > *count)
			diff = *count;
1635
		*count -= diff;
C
Chao Yu 已提交
1636
		release = diff;
1637
		sbi->total_valid_block_count -= diff;
1638 1639
		if (!*count) {
			spin_unlock(&sbi->stat_lock);
1640
			percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
C
Chao Yu 已提交
1641
			goto enospc;
1642
		}
1643 1644
	}
	spin_unlock(&sbi->stat_lock);
1645

L
LiFan 已提交
1646
	if (unlikely(release))
C
Chao Yu 已提交
1647 1648 1649 1650 1651 1652 1653
		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;
1654 1655
}

1656
static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1657
						struct inode *inode,
1658
						block_t count)
1659
{
1660 1661
	blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;

1662
	spin_lock(&sbi->stat_lock);
1663
	f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1664
	f2fs_bug_on(sbi, inode->i_blocks < sectors);
1665
	sbi->total_valid_block_count -= (block_t)count;
1666 1667 1668 1669
	if (sbi->reserved_blocks &&
		sbi->current_reserved_blocks < sbi->reserved_blocks)
		sbi->current_reserved_blocks = min(sbi->reserved_blocks,
					sbi->current_reserved_blocks + count);
1670
	spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1671
	f2fs_i_blocks_write(inode, count, false, true);
1672 1673 1674 1675
}

static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
{
1676
	atomic_inc(&sbi->nr_pages[count_type]);
1677

1678 1679
	if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
		count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1680 1681
		return;

1682
	set_sbi_flag(sbi, SBI_IS_DIRTY);
1683 1684
}

1685
static inline void inode_inc_dirty_pages(struct inode *inode)
1686
{
1687
	atomic_inc(&F2FS_I(inode)->dirty_pages);
1688 1689
	inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1690 1691
	if (IS_NOQUOTA(inode))
		inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1692 1693 1694 1695
}

static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
{
1696
	atomic_dec(&sbi->nr_pages[count_type]);
1697 1698
}

1699
static inline void inode_dec_dirty_pages(struct inode *inode)
1700
{
1701 1702
	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
			!S_ISLNK(inode->i_mode))
1703 1704
		return;

1705
	atomic_dec(&F2FS_I(inode)->dirty_pages);
1706 1707
	dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1708 1709
	if (IS_NOQUOTA(inode))
		dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1710 1711
}

1712
static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1713
{
1714
	return atomic_read(&sbi->nr_pages[count_type]);
1715 1716
}

1717
static inline int get_dirty_pages(struct inode *inode)
1718
{
1719
	return atomic_read(&F2FS_I(inode)->dirty_pages);
1720 1721
}

1722 1723
static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
{
1724
	unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1725 1726 1727 1728
	unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
						sbi->log_blocks_per_seg;

	return segs / sbi->segs_per_sec;
1729 1730
}

1731 1732
static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
{
1733
	return sbi->total_valid_block_count;
1734 1735
}

1736 1737 1738 1739 1740
static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
{
	return sbi->discard_blks;
}

1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753
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
1754 1755 1756 1757 1758
static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
{
	return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
}

1759 1760 1761
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
1762 1763
	int offset;

W
Wanpeng Li 已提交
1764
	if (__cp_payload(sbi) > 0) {
C
Changman Lee 已提交
1765 1766 1767
		if (flag == NAT_BITMAP)
			return &ckpt->sit_nat_version_bitmap;
		else
J
Jaegeuk Kim 已提交
1768
			return (unsigned char *)ckpt + F2FS_BLKSIZE;
C
Changman Lee 已提交
1769 1770
	} else {
		offset = (flag == NAT_BITMAP) ?
1771
			le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
C
Changman Lee 已提交
1772 1773
		return &ckpt->sit_nat_version_bitmap + offset;
	}
1774 1775 1776 1777
}

static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
{
1778
	block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1779

1780
	if (sbi->cur_cp_pack == 2)
1781
		start_addr += sbi->blocks_per_seg;
1782 1783
	return start_addr;
}
1784

1785 1786 1787
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);
1788

1789 1790
	if (sbi->cur_cp_pack == 1)
		start_addr += sbi->blocks_per_seg;
1791 1792 1793
	return start_addr;
}

1794 1795 1796 1797 1798
static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
{
	sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
}

1799 1800 1801 1802 1803
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
1804
static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
1805
					struct inode *inode, bool is_inode)
1806 1807 1808
{
	block_t	valid_block_count;
	unsigned int valid_node_count;
C
Chao Yu 已提交
1809 1810 1811 1812 1813 1814 1815
	bool quota = inode && !is_inode;

	if (quota) {
		int ret = dquot_reserve_block(inode, 1);
		if (ret)
			return ret;
	}
1816

1817 1818 1819 1820 1821 1822 1823
#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(sbi, FAULT_BLOCK)) {
		f2fs_show_injection_info(FAULT_BLOCK);
		goto enospc;
	}
#endif

1824 1825
	spin_lock(&sbi->stat_lock);

1826 1827 1828
	valid_block_count = sbi->total_valid_block_count +
					sbi->current_reserved_blocks + 1;

1829
	if (!__allow_reserved_blocks(sbi, inode))
1830 1831 1832
		valid_block_count += sbi->root_reserved_blocks;

	if (unlikely(valid_block_count > sbi->user_block_count)) {
1833
		spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1834
		goto enospc;
1835 1836
	}

1837
	valid_node_count = sbi->total_valid_node_count + 1;
1838
	if (unlikely(valid_node_count > sbi->total_node_count)) {
1839
		spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1840
		goto enospc;
1841 1842
	}

1843 1844
	sbi->total_valid_node_count++;
	sbi->total_valid_block_count++;
1845 1846
	spin_unlock(&sbi->stat_lock);

1847 1848 1849 1850
	if (inode) {
		if (is_inode)
			f2fs_mark_inode_dirty_sync(inode, true);
		else
C
Chao Yu 已提交
1851
			f2fs_i_blocks_write(inode, 1, true, true);
1852
	}
1853

1854
	percpu_counter_inc(&sbi->alloc_valid_block_count);
C
Chao Yu 已提交
1855 1856 1857 1858 1859 1860
	return 0;

enospc:
	if (quota)
		dquot_release_reservation_block(inode, 1);
	return -ENOSPC;
1861 1862 1863
}

static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1864
					struct inode *inode, bool is_inode)
1865 1866 1867
{
	spin_lock(&sbi->stat_lock);

1868 1869
	f2fs_bug_on(sbi, !sbi->total_valid_block_count);
	f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1870
	f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1871

1872 1873
	sbi->total_valid_node_count--;
	sbi->total_valid_block_count--;
1874 1875 1876
	if (sbi->reserved_blocks &&
		sbi->current_reserved_blocks < sbi->reserved_blocks)
		sbi->current_reserved_blocks++;
1877 1878

	spin_unlock(&sbi->stat_lock);
C
Chao Yu 已提交
1879 1880 1881

	if (!is_inode)
		f2fs_i_blocks_write(inode, 1, false, true);
1882 1883 1884 1885
}

static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
{
1886
	return sbi->total_valid_node_count;
1887 1888 1889 1890
}

static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
{
1891
	percpu_counter_inc(&sbi->total_valid_inode_count);
1892 1893
}

1894
static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1895
{
1896
	percpu_counter_dec(&sbi->total_valid_inode_count);
1897 1898
}

1899
static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1900
{
1901
	return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1902 1903
}

1904 1905 1906
static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
						pgoff_t index, bool for_write)
{
1907 1908
#ifdef CONFIG_F2FS_FAULT_INJECTION
	struct page *page = find_lock_page(mapping, index);
1909

1910 1911 1912
	if (page)
		return page;

1913 1914
	if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
		f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1915
		return NULL;
1916
	}
1917
#endif
1918 1919 1920 1921 1922
	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
1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935
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);
}

1936 1937 1938 1939 1940 1941 1942 1943 1944 1945
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);
}

1946 1947
static inline void f2fs_put_page(struct page *page, int unlock)
{
1948
	if (!page)
1949 1950 1951
		return;

	if (unlock) {
1952
		f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1953 1954
		unlock_page(page);
	}
1955
	put_page(page);
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
}

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,
1969
					size_t size)
1970
{
1971
	return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
1972 1973
}

1974 1975 1976 1977 1978
static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
						gfp_t flags)
{
	void *entry;

1979 1980 1981
	entry = kmem_cache_alloc(cachep, flags);
	if (!entry)
		entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
1982 1983 1984
	return entry;
}

1985 1986
static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
						int npages, bool no_fail)
J
Jaegeuk Kim 已提交
1987 1988 1989
{
	struct bio *bio;

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
	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
2004 2005
}

2006 2007 2008 2009 2010 2011 2012
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();
}

2013 2014 2015 2016
#define RAW_IS_INODE(p)	((p)->footer.nid == (p)->footer.ino)

static inline bool IS_INODE(struct page *page)
{
2017
	struct f2fs_node *p = F2FS_NODE(page);
2018

2019 2020 2021
	return RAW_IS_INODE(p);
}

2022 2023 2024 2025 2026 2027
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;
}

2028 2029 2030 2031 2032
static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
{
	return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
}

2033 2034 2035
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)
2036 2037 2038
{
	struct f2fs_node *raw_node;
	__le32 *addr_array;
2039 2040
	int base = 0;
	bool is_inode = IS_INODE(node_page);
2041

2042
	raw_node = F2FS_NODE(node_page);
2043 2044

	/* from GC path only */
2045 2046
	if (is_inode) {
		if (!inode)
2047
			base = offset_in_addr(&raw_node->i);
2048 2049
		else if (f2fs_has_extra_attr(inode))
			base = get_extra_isize(inode);
2050 2051
	}

2052
	addr_array = blkaddr_in_node(raw_node);
2053
	return le32_to_cpu(addr_array[base + offset]);
2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064
}

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

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

2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
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;
}

2083
static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094
{
	int mask;
	int ret;

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

2095
static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106
{
	int mask;
	int ret;

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

2107 2108 2109 2110 2111 2112 2113 2114 2115
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
2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129
#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;
}

2130 2131 2132
/* used for f2fs_inode_info->flags */
enum {
	FI_NEW_INODE,		/* indicate newly allocated inode */
2133
	FI_DIRTY_INODE,		/* indicate inode is dirty or not */
2134
	FI_AUTO_RECOVER,	/* indicate inode is recoverable */
2135
	FI_DIRTY_DIR,		/* indicate directory has dirty pages */
2136 2137 2138
	FI_INC_LINK,		/* need to increment i_nlink */
	FI_ACL_MODE,		/* indicate acl mode */
	FI_NO_ALLOC,		/* should not allocate any blocks */
2139
	FI_FREE_NID,		/* free allocated nide */
2140
	FI_NO_EXTENT,		/* not to use the extent cache */
J
Jaegeuk Kim 已提交
2141
	FI_INLINE_XATTR,	/* used for inline xattr */
2142
	FI_INLINE_DATA,		/* used for inline data*/
2143
	FI_INLINE_DENTRY,	/* used for inline dentry */
2144 2145
	FI_APPEND_WRITE,	/* inode has appended data */
	FI_UPDATE_WRITE,	/* inode has in-place-update data */
J
Jaegeuk Kim 已提交
2146 2147
	FI_NEED_IPU,		/* used for ipu per file */
	FI_ATOMIC_FILE,		/* indicate atomic file */
C
Chao Yu 已提交
2148
	FI_ATOMIC_COMMIT,	/* indicate the state of atomical committing */
2149
	FI_VOLATILE_FILE,	/* indicate volatile file */
2150
	FI_FIRST_BLOCK_WRITTEN,	/* indicate #0 data block was written */
2151
	FI_DROP_CACHE,		/* drop dirty page cache */
2152
	FI_DATA_EXIST,		/* indicate data exists */
2153
	FI_INLINE_DOTS,		/* indicate inline dot dentries */
C
Chao Yu 已提交
2154
	FI_DO_DEFRAG,		/* indicate defragment is running */
2155
	FI_DIRTY_FILE,		/* indicate regular/symlink has dirty pages */
2156
	FI_NO_PREALLOC,		/* indicate skipped preallocated blocks */
2157
	FI_HOT_DATA,		/* indicate file is hot */
2158
	FI_EXTRA_ATTR,		/* indicate file has extra attribute */
C
Chao Yu 已提交
2159
	FI_PROJ_INHERIT,	/* indicate file inherits projectid */
2160
	FI_PIN_FILE,		/* indicate file should not be gced */
2161 2162
};

2163 2164 2165 2166 2167 2168 2169
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:
2170
	case FI_NEW_INODE:
2171 2172 2173 2174
		if (set)
			return;
	case FI_DATA_EXIST:
	case FI_INLINE_DOTS:
2175
	case FI_PIN_FILE:
2176
		f2fs_mark_inode_dirty_sync(inode, true);
2177 2178 2179
	}
}

2180
static inline void set_inode_flag(struct inode *inode, int flag)
2181
{
2182 2183
	if (!test_bit(flag, &F2FS_I(inode)->flags))
		set_bit(flag, &F2FS_I(inode)->flags);
2184
	__mark_inode_dirty_flag(inode, flag, true);
2185 2186
}

2187
static inline int is_inode_flag_set(struct inode *inode, int flag)
2188
{
2189
	return test_bit(flag, &F2FS_I(inode)->flags);
2190 2191
}

2192
static inline void clear_inode_flag(struct inode *inode, int flag)
2193
{
2194 2195
	if (test_bit(flag, &F2FS_I(inode)->flags))
		clear_bit(flag, &F2FS_I(inode)->flags);
2196
	__mark_inode_dirty_flag(inode, flag, false);
2197 2198
}

2199
static inline void set_acl_inode(struct inode *inode, umode_t mode)
2200
{
2201 2202
	F2FS_I(inode)->i_acl_mode = mode;
	set_inode_flag(inode, FI_ACL_MODE);
2203
	f2fs_mark_inode_dirty_sync(inode, false);
2204 2205
}

2206
static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2207
{
2208 2209 2210 2211
	if (inc)
		inc_nlink(inode);
	else
		drop_nlink(inode);
2212
	f2fs_mark_inode_dirty_sync(inode, true);
2213 2214
}

2215
static inline void f2fs_i_blocks_write(struct inode *inode,
C
Chao Yu 已提交
2216
					block_t diff, bool add, bool claim)
2217
{
2218 2219 2220
	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
2221 2222 2223 2224 2225 2226 2227 2228 2229 2230
	/* 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);
	}

2231
	f2fs_mark_inode_dirty_sync(inode, true);
2232 2233
	if (clean || recover)
		set_inode_flag(inode, FI_AUTO_RECOVER);
2234 2235
}

2236 2237
static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
{
2238 2239 2240
	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);

2241 2242 2243 2244
	if (i_size_read(inode) == i_size)
		return;

	i_size_write(inode, i_size);
2245
	f2fs_mark_inode_dirty_sync(inode, true);
2246 2247
	if (clean || recover)
		set_inode_flag(inode, FI_AUTO_RECOVER);
2248 2249
}

2250
static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2251
{
2252
	F2FS_I(inode)->i_current_depth = depth;
2253
	f2fs_mark_inode_dirty_sync(inode, true);
2254 2255
}

2256 2257 2258 2259 2260 2261 2262
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);
}

2263
static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
J
Jaegeuk Kim 已提交
2264
{
2265
	F2FS_I(inode)->i_xattr_nid = xnid;
2266
	f2fs_mark_inode_dirty_sync(inode, true);
2267 2268 2269 2270 2271
}

static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
{
	F2FS_I(inode)->i_pino = pino;
2272
	f2fs_mark_inode_dirty_sync(inode, true);
2273 2274
}

2275
static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
J
Jaegeuk Kim 已提交
2276
{
2277 2278
	struct f2fs_inode_info *fi = F2FS_I(inode);

J
Jaegeuk Kim 已提交
2279
	if (ri->i_inline & F2FS_INLINE_XATTR)
2280
		set_bit(FI_INLINE_XATTR, &fi->flags);
2281
	if (ri->i_inline & F2FS_INLINE_DATA)
2282
		set_bit(FI_INLINE_DATA, &fi->flags);
2283
	if (ri->i_inline & F2FS_INLINE_DENTRY)
2284
		set_bit(FI_INLINE_DENTRY, &fi->flags);
2285
	if (ri->i_inline & F2FS_DATA_EXIST)
2286
		set_bit(FI_DATA_EXIST, &fi->flags);
2287
	if (ri->i_inline & F2FS_INLINE_DOTS)
2288
		set_bit(FI_INLINE_DOTS, &fi->flags);
2289 2290
	if (ri->i_inline & F2FS_EXTRA_ATTR)
		set_bit(FI_EXTRA_ATTR, &fi->flags);
2291 2292
	if (ri->i_inline & F2FS_PIN_FILE)
		set_bit(FI_PIN_FILE, &fi->flags);
J
Jaegeuk Kim 已提交
2293 2294
}

2295
static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
J
Jaegeuk Kim 已提交
2296 2297 2298
{
	ri->i_inline = 0;

2299
	if (is_inode_flag_set(inode, FI_INLINE_XATTR))
J
Jaegeuk Kim 已提交
2300
		ri->i_inline |= F2FS_INLINE_XATTR;
2301
	if (is_inode_flag_set(inode, FI_INLINE_DATA))
2302
		ri->i_inline |= F2FS_INLINE_DATA;
2303
	if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2304
		ri->i_inline |= F2FS_INLINE_DENTRY;
2305
	if (is_inode_flag_set(inode, FI_DATA_EXIST))
2306
		ri->i_inline |= F2FS_DATA_EXIST;
2307
	if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2308
		ri->i_inline |= F2FS_INLINE_DOTS;
2309 2310
	if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
		ri->i_inline |= F2FS_EXTRA_ATTR;
2311 2312
	if (is_inode_flag_set(inode, FI_PIN_FILE))
		ri->i_inline |= F2FS_PIN_FILE;
2313 2314 2315 2316 2317
}

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
2318 2319
}

2320 2321
static inline int f2fs_has_inline_xattr(struct inode *inode)
{
2322
	return is_inode_flag_set(inode, FI_INLINE_XATTR);
2323 2324
}

2325
static inline unsigned int addrs_per_inode(struct inode *inode)
2326
{
C
Chao Yu 已提交
2327
	return CUR_ADDRS_PER_INODE(inode) - F2FS_INLINE_XATTR_ADDRS(inode);
2328 2329
}

C
Chao Yu 已提交
2330
static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
J
Jaegeuk Kim 已提交
2331
{
2332
	struct f2fs_inode *ri = F2FS_INODE(page);
2333

J
Jaegeuk Kim 已提交
2334
	return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
C
Chao Yu 已提交
2335
					F2FS_INLINE_XATTR_ADDRS(inode)]);
J
Jaegeuk Kim 已提交
2336 2337 2338 2339
}

static inline int inline_xattr_size(struct inode *inode)
{
C
Chao Yu 已提交
2340
	return get_inline_xattr_addrs(inode) * sizeof(__le32);
J
Jaegeuk Kim 已提交
2341 2342
}

2343 2344
static inline int f2fs_has_inline_data(struct inode *inode)
{
2345
	return is_inode_flag_set(inode, FI_INLINE_DATA);
2346 2347
}

2348 2349
static inline int f2fs_exist_data(struct inode *inode)
{
2350
	return is_inode_flag_set(inode, FI_DATA_EXIST);
2351 2352
}

2353 2354
static inline int f2fs_has_inline_dots(struct inode *inode)
{
2355
	return is_inode_flag_set(inode, FI_INLINE_DOTS);
2356 2357
}

2358 2359 2360 2361 2362
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
2363 2364
static inline bool f2fs_is_atomic_file(struct inode *inode)
{
2365
	return is_inode_flag_set(inode, FI_ATOMIC_FILE);
J
Jaegeuk Kim 已提交
2366 2367
}

C
Chao Yu 已提交
2368 2369 2370 2371 2372
static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
{
	return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
}

2373 2374
static inline bool f2fs_is_volatile_file(struct inode *inode)
{
2375
	return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2376 2377
}

2378 2379
static inline bool f2fs_is_first_block_written(struct inode *inode)
{
2380
	return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2381 2382
}

2383 2384
static inline bool f2fs_is_drop_cache(struct inode *inode)
{
2385
	return is_inode_flag_set(inode, FI_DROP_CACHE);
2386 2387
}

C
Chao Yu 已提交
2388
static inline void *inline_data_addr(struct inode *inode, struct page *page)
2389
{
2390
	struct f2fs_inode *ri = F2FS_INODE(page);
2391
	int extra_size = get_extra_isize(inode);
2392

2393
	return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2394 2395
}

2396 2397
static inline int f2fs_has_inline_dentry(struct inode *inode)
{
2398
	return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2399 2400
}

2401 2402 2403 2404 2405 2406
static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
{
	if (!f2fs_has_inline_dentry(dir))
		kunmap(page);
}

2407 2408 2409 2410 2411 2412 2413 2414
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;
2415
	f2fs_mark_inode_dirty_sync(inode, true);
2416 2417 2418 2419 2420
}

static inline void clear_file(struct inode *inode, int type)
{
	F2FS_I(inode)->i_advise &= ~type;
2421
	f2fs_mark_inode_dirty_sync(inode, true);
2422 2423
}

2424 2425
static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
{
2426 2427
	bool ret;

2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439
	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;
2440 2441 2442 2443 2444 2445

	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;
2446 2447
}

J
Jaegeuk Kim 已提交
2448 2449
static inline int f2fs_readonly(struct super_block *sb)
{
2450
	return sb->s_flags & SB_RDONLY;
J
Jaegeuk Kim 已提交
2451 2452
}

2453 2454
static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
{
2455
	return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2456 2457
}

2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468
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
2469 2470 2471
static inline bool f2fs_may_extent_tree(struct inode *inode)
{
	if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2472
			is_inode_flag_set(inode, FI_NO_EXTENT))
J
Jaegeuk Kim 已提交
2473 2474
		return false;

A
Al Viro 已提交
2475
	return S_ISREG(inode->i_mode);
J
Jaegeuk Kim 已提交
2476 2477
}

2478 2479
static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
2480
{
J
Jaegeuk Kim 已提交
2481
#ifdef CONFIG_F2FS_FAULT_INJECTION
2482 2483
	if (time_to_inject(sbi, FAULT_KMALLOC)) {
		f2fs_show_injection_info(FAULT_KMALLOC);
J
Jaegeuk Kim 已提交
2484
		return NULL;
2485
	}
J
Jaegeuk Kim 已提交
2486
#endif
2487 2488 2489
	return kmalloc(size, flags);
}

C
Chao Yu 已提交
2490 2491 2492 2493 2494 2495
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
2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513
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);
}

2514
static inline int get_extra_isize(struct inode *inode)
C
Chao Yu 已提交
2515
{
2516
	return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
C
Chao Yu 已提交
2517 2518
}

C
Chao Yu 已提交
2519 2520 2521 2522 2523
static inline int get_inline_xattr_addrs(struct inode *inode)
{
	return F2FS_I(inode)->i_inline_xattr_size;
}

2524
#define get_inode_mode(i) \
2525
	((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2526 2527
	 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))

2528 2529 2530 2531
#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
2532 2533 2534 2535 2536 2537
#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
2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562
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);
}

2563 2564 2565
/*
 * file.c
 */
2566 2567 2568 2569
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);
2570 2571
int f2fs_getattr(const struct path *path, struct kstat *stat,
			u32 request_mask, unsigned int flags);
2572 2573
int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2574
void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2575
int f2fs_precache_extents(struct inode *inode);
2576 2577
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);
2578
int f2fs_pin_file_control(struct inode *inode, bool inc);
2579 2580 2581 2582

/*
 * inode.c
 */
2583
void f2fs_set_inode_flags(struct inode *inode);
C
Chao Yu 已提交
2584 2585
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);
2586 2587 2588
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);
2589 2590
void update_inode(struct inode *inode, struct page *node_page);
void update_inode_page(struct inode *inode);
2591 2592 2593
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);
2594 2595 2596 2597 2598 2599 2600 2601 2602

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

/*
 * dir.c
 */
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 2637 2638 2639 2640 2641
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);
2642

2643 2644
static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
{
2645
	return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2646
				inode, inode->i_ino, inode->i_mode);
2647 2648
}

2649 2650 2651
/*
 * super.c
 */
2652 2653
int f2fs_inode_dirtied(struct inode *inode, bool sync);
void f2fs_inode_synced(struct inode *inode);
J
Jaegeuk Kim 已提交
2654
int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
C
Chao Yu 已提交
2655
void f2fs_quota_off_umount(struct super_block *sb);
2656 2657
int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
int f2fs_sync_fs(struct super_block *sb, int sync);
2658
extern __printf(3, 4)
2659
void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2660
int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2661 2662 2663 2664

/*
 * hash.c
 */
2665 2666
f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
				struct fscrypt_name *fname);
2667 2668 2669 2670 2671 2672 2673

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

2674 2675 2676 2677 2678 2679 2680 2681
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);
2682
int truncate_xattr_node(struct inode *inode);
2683 2684 2685
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
2686
struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs);
2687 2688 2689 2690 2691 2692
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);
2693
int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
C
Chao Yu 已提交
2694
			bool do_balance, enum iostat_type io_type);
2695
void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2696 2697 2698 2699 2700
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
2701
int recover_xattr_data(struct inode *inode, struct page *page);
2702
int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2703
void restore_node_summary(struct f2fs_sb_info *sbi,
2704
			unsigned int segno, struct f2fs_summary_block *sum);
2705
void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2706 2707
int build_node_manager(struct f2fs_sb_info *sbi);
void destroy_node_manager(struct f2fs_sb_info *sbi);
2708
int __init create_node_manager_caches(void);
2709 2710 2711 2712 2713
void destroy_node_manager_caches(void);

/*
 * segment.c
 */
2714
bool need_SSR(struct f2fs_sb_info *sbi);
2715
void register_inmem_page(struct inode *inode, struct page *page);
J
Jaegeuk Kim 已提交
2716
void drop_inmem_pages_all(struct f2fs_sb_info *sbi);
2717
void drop_inmem_pages(struct inode *inode);
2718
void drop_inmem_page(struct inode *inode, struct page *page);
2719 2720 2721
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
2722
int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
2723
int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2724
int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
2725 2726 2727
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
2728 2729
void init_discard_policy(struct discard_policy *dpolicy, int discard_type,
						unsigned int granularity);
2730
void stop_discard_thread(struct f2fs_sb_info *sbi);
2731
bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2732 2733 2734 2735 2736 2737 2738 2739
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
2740 2741
void write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
						enum iostat_type io_type);
2742 2743
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);
2744
int rewrite_data_page(struct f2fs_io_info *fio);
2745 2746 2747 2748 2749 2750 2751 2752 2753
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,
2754 2755
			struct f2fs_summary *sum, int type,
			struct f2fs_io_info *fio, bool add_list);
2756 2757
void f2fs_wait_on_page_writeback(struct page *page,
			enum page_type type, bool ordered);
2758
void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr);
2759 2760 2761 2762 2763 2764 2765
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);
2766 2767
int __init create_segment_manager_caches(void);
void destroy_segment_manager_caches(void);
2768
int rw_hint_to_seg_type(enum rw_hint hint);
2769 2770 2771 2772

/*
 * checkpoint.c
 */
2773 2774 2775 2776 2777 2778 2779 2780 2781
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
2782
			long nr_to_write, enum iostat_type io_type);
2783 2784 2785 2786
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
2787 2788 2789 2790
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);
2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802
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);
2803
int __init create_checkpoint_caches(void);
2804 2805 2806 2807 2808
void destroy_checkpoint_caches(void);

/*
 * data.c
 */
2809 2810
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,
2811
				struct inode *inode, nid_t ino, pgoff_t idx,
2812 2813
				enum page_type type);
void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2814
int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2815
int f2fs_submit_page_write(struct f2fs_io_info *fio);
2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838
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);
void f2fs_set_page_dirty_nobuffers(struct page *page);
C
Chao Yu 已提交
2839 2840 2841
int __f2fs_write_data_pages(struct address_space *mapping,
						struct writeback_control *wbc,
						enum iostat_type io_type);
2842 2843 2844
void f2fs_invalidate_page(struct page *page, unsigned int offset,
			unsigned int length);
int f2fs_release_page(struct page *page, gfp_t wait);
2845
#ifdef CONFIG_MIGRATION
2846 2847
int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
			struct page *page, enum migrate_mode mode);
2848
#endif
2849 2850 2851 2852

/*
 * gc.c
 */
2853 2854 2855
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);
2856 2857
int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
			unsigned int segno);
2858
void build_gc_manager(struct f2fs_sb_info *sbi);
2859 2860 2861 2862

/*
 * recovery.c
 */
2863 2864
int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2865 2866 2867 2868 2869 2870 2871 2872 2873 2874

/*
 * 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;
2875 2876
	unsigned long long hit_largest, hit_cached, hit_rbtree;
	unsigned long long hit_total, total_ext;
J
Jaegeuk Kim 已提交
2877
	int ext_tree, zombie_tree, ext_node;
2878 2879
	int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
	int ndirty_data, ndirty_qdata;
2880
	int inmem_pages;
2881
	unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
2882 2883
	int nats, dirty_nats, sits, dirty_sits;
	int free_nids, avail_nids, alloc_nids;
2884
	int total_count, utilization;
C
Chao Yu 已提交
2885
	int bg_gc, nr_wb_cp_data, nr_wb_data;
C
Chao Yu 已提交
2886 2887
	int nr_flushing, nr_flushed, flush_list_empty;
	int nr_discarding, nr_discarded;
C
Chao Yu 已提交
2888
	int nr_discard_cmd;
C
Chao Yu 已提交
2889
	unsigned int undiscard_blks;
2890
	int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2891
	int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2892
	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2893 2894 2895 2896
	unsigned int bimodal, avg_vblocks;
	int util_free, util_valid, util_invalid;
	int rsvd_segs, overp_segs;
	int dirty_count, node_pages, meta_pages;
2897
	int prefree_count, call_count, cp_count, bg_cp_count;
2898
	int tot_segs, node_segs, data_segs, free_segs, free_secs;
2899
	int bg_node_segs, bg_data_segs;
2900
	int tot_blks, data_blks, node_blks;
2901
	int bg_data_blks, bg_node_blks;
2902 2903 2904 2905 2906 2907
	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];
2908
	unsigned int inplace_count;
C
Chao Yu 已提交
2909
	unsigned long long base_mem, cache_mem, page_mem;
2910 2911
};

2912 2913
static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
{
C
Chris Fries 已提交
2914
	return (struct f2fs_stat_info *)sbi->stat_info;
2915 2916
}

2917
#define stat_inc_cp_count(si)		((si)->cp_count++)
2918
#define stat_inc_bg_cp_count(si)	((si)->bg_cp_count++)
2919 2920
#define stat_inc_call_count(si)		((si)->call_count++)
#define stat_inc_bggc_count(sbi)	((sbi)->bg_gc++)
C
Chao Yu 已提交
2921 2922
#define stat_inc_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]++)
#define stat_dec_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]--)
2923 2924 2925 2926
#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
2927 2928 2929 2930 2931 2932 2933 2934 2935 2936
#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)
2937 2938 2939
#define stat_inc_inline_inode(inode)					\
	do {								\
		if (f2fs_has_inline_data(inode))			\
2940
			(atomic_inc(&F2FS_I_SB(inode)->inline_inode));	\
2941 2942 2943 2944
	} while (0)
#define stat_dec_inline_inode(inode)					\
	do {								\
		if (f2fs_has_inline_data(inode))			\
2945
			(atomic_dec(&F2FS_I_SB(inode)->inline_inode));	\
2946
	} while (0)
2947 2948 2949
#define stat_inc_inline_dir(inode)					\
	do {								\
		if (f2fs_has_inline_dentry(inode))			\
2950
			(atomic_inc(&F2FS_I_SB(inode)->inline_dir));	\
2951 2952 2953 2954
	} while (0)
#define stat_dec_inline_dir(inode)					\
	do {								\
		if (f2fs_has_inline_dentry(inode))			\
2955
			(atomic_dec(&F2FS_I_SB(inode)->inline_dir));	\
2956
	} while (0)
2957 2958 2959 2960
#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]++)
2961 2962
#define stat_inc_inplace_blocks(sbi)					\
		(atomic_inc(&(sbi)->inplace_count))
2963
#define stat_inc_atomic_write(inode)					\
2964
		(atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
2965
#define stat_dec_atomic_write(inode)					\
2966
		(atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
2967 2968 2969 2970 2971 2972 2973
#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)
2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984
#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)
2985
#define stat_inc_seg_count(sbi, type, gc_type)				\
2986
	do {								\
2987
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
2988 2989
		si->tot_segs++;						\
		if ((type) == SUM_TYPE_DATA) {				\
2990
			si->data_segs++;				\
2991 2992
			si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0;	\
		} else {						\
2993
			si->node_segs++;				\
2994 2995
			si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0;	\
		}							\
2996 2997 2998
	} while (0)

#define stat_inc_tot_blk_count(si, blks)				\
2999
	((si)->tot_blks += (blks))
3000

3001
#define stat_inc_data_blk_count(sbi, blks, gc_type)			\
3002
	do {								\
3003
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3004 3005
		stat_inc_tot_blk_count(si, blks);			\
		si->data_blks += (blks);				\
3006
		si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3007 3008
	} while (0)

3009
#define stat_inc_node_blk_count(sbi, blks, gc_type)			\
3010
	do {								\
3011
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3012 3013
		stat_inc_tot_blk_count(si, blks);			\
		si->node_blks += (blks);				\
3014
		si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3015 3016
	} while (0)

3017 3018
int f2fs_build_stats(struct f2fs_sb_info *sbi);
void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3019
int __init f2fs_create_root_stats(void);
3020
void f2fs_destroy_root_stats(void);
3021
#else
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 3049 3050
#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)
3051 3052 3053

static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3054
static inline int __init f2fs_create_root_stats(void) { return 0; }
3055
static inline void f2fs_destroy_root_stats(void) { }
3056 3057 3058 3059 3060 3061 3062 3063 3064 3065
#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;
3066
extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3067
extern const struct inode_operations f2fs_special_inode_operations;
J
Jaegeuk Kim 已提交
3068
extern struct kmem_cache *inode_entry_slab;
3069

3070 3071 3072
/*
 * inline.c
 */
3073 3074 3075
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);
3076
void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096
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);
3097

3098 3099 3100
/*
 * shrinker.c
 */
3101 3102 3103 3104 3105 3106
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);
3107

3108 3109 3110
/*
 * extent_cache.c
 */
3111 3112 3113 3114 3115 3116 3117 3118 3119 3120
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);
3121 3122
bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
						struct rb_root *root);
3123 3124 3125 3126 3127 3128 3129 3130
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
3131
void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3132 3133
			pgoff_t fofs, block_t blkaddr, unsigned int len);
void init_extent_cache_info(struct f2fs_sb_info *sbi);
3134 3135 3136
int __init create_extent_cache(void);
void destroy_extent_cache(void);

3137 3138 3139
/*
 * sysfs.c
 */
3140 3141 3142 3143
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);
3144

3145 3146 3147
/*
 * crypto support
 */
3148
static inline bool f2fs_encrypted_inode(struct inode *inode)
3149 3150 3151 3152
{
	return file_is_encrypt(inode);
}

3153 3154 3155 3156 3157
static inline bool f2fs_encrypted_file(struct inode *inode)
{
	return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode);
}

3158 3159 3160 3161
static inline void f2fs_set_encrypted_inode(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
	file_set_encrypt(inode);
3162
	inode->i_flags |= S_ENCRYPTED;
3163 3164 3165 3166 3167
#endif
}

static inline bool f2fs_bio_encrypted(struct bio *bio)
{
3168
	return bio->bi_private != NULL;
3169 3170 3171 3172 3173 3174
}

static inline int f2fs_sb_has_crypto(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT);
}
3175

3176
static inline int f2fs_sb_mounted_blkzoned(struct super_block *sb)
3177
{
3178
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_BLKZONED);
3179 3180
}

3181 3182 3183 3184 3185
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
3186 3187 3188 3189 3190
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
3191 3192 3193 3194 3195
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
3196 3197 3198 3199 3200
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
3201 3202 3203 3204 3205
static inline int f2fs_sb_has_quota_ino(struct super_block *sb)
{
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_QUOTA_INO);
}

3206 3207
#ifdef CONFIG_BLK_DEV_ZONED
static inline int get_blkz_type(struct f2fs_sb_info *sbi,
J
Jaegeuk Kim 已提交
3208
			struct block_device *bdev, block_t blkaddr)
3209 3210
{
	unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
J
Jaegeuk Kim 已提交
3211
	int i;
3212

J
Jaegeuk Kim 已提交
3213 3214 3215 3216
	for (i = 0; i < sbi->s_ndevs; i++)
		if (FDEV(i).bdev == bdev)
			return FDEV(i).blkz_type[zno];
	return -EINVAL;
3217 3218 3219
}
#endif

3220
static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
3221
{
3222 3223 3224
	struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);

	return blk_queue_discard(q) || f2fs_sb_mounted_blkzoned(sbi->sb);
3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241
}

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;
	}
}

3242 3243 3244
static inline bool f2fs_may_encrypt(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
A
Al Viro 已提交
3245
	umode_t mode = inode->i_mode;
3246 3247 3248 3249 3250 3251 3252

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

3253
#endif