f2fs.h 101.9 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 F2FS_OPTION(sbi)	((sbi)->mount_opt)
#define clear_opt(sbi, option)	(F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
#define set_opt(sbi, option)	(F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
#define test_opt(sbi, option)	(F2FS_OPTION(sbi).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 {
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	unsigned int opt;
	int write_io_size_bits;		/* Write IO size bits */
	block_t root_reserved_blocks;	/* root reserved blocks */
	kuid_t s_resuid;		/* reserved blocks for uid */
	kgid_t s_resgid;		/* reserved blocks for gid */
	int active_logs;		/* # of active logs */
	int inline_xattr_size;		/* inline xattr size */
#ifdef CONFIG_F2FS_FAULT_INJECTION
	struct f2fs_fault_info fault_info;	/* For fault injection */
#endif
#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
	/* For which write hints are passed down to block layer */
	int whint_mode;
	int alloc_mode;			/* segment allocation policy */
	int fsync_mode;			/* fsync policy */
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	bool test_dummy_encryption;	/* test dummy encryption */
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};

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#define F2FS_FEATURE_ENCRYPT		0x0001
#define F2FS_FEATURE_BLKZONED		0x0002
#define F2FS_FEATURE_ATOMIC_WRITE	0x0004
#define F2FS_FEATURE_EXTRA_ATTR		0x0008
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#define F2FS_FEATURE_PRJQUOTA		0x0010
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#define F2FS_FEATURE_INODE_CHKSUM	0x0020
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#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR	0x0040
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#define F2FS_FEATURE_QUOTA_INO		0x0080
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#define F2FS_FEATURE_INODE_CRTIME	0x0100
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#define F2FS_FEATURE_LOST_FOUND		0x0200
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#define F2FS_FEATURE_VERITY		0x0400	/* reserved */
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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 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_MAX_DISCARD_LEN		512	/* Max. 2MB per discard */
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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_DISCARD_URGENT_UTIL		80	/* do more discard over 80% */
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#define DEF_CP_INTERVAL			60	/* 60 secs */
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#define DEF_IDLE_INTERVAL		5	/* 5 secs */
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struct cp_control {
	int reason;
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	__u64 trim_start;
	__u64 trim_end;
	__u64 trim_minlen;
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};

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

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

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

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

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

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

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

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enum {
	D_PREP,
	D_SUBMIT,
	D_DONE,
};

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

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

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

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

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

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

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

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

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

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

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

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#define F2FS_IOC_FSGETXATTR		FS_IOC_FSGETXATTR
#define F2FS_IOC_FSSETXATTR		FS_IOC_FSSETXATTR

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

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struct f2fs_defragment {
	u64 start;
	u64 len;
};

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

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

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

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

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static inline void make_dentry_ptr_block(struct inode *inode,
		struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
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{
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	d->inode = inode;
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	d->max = NR_DENTRY_IN_BLOCK;
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	d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
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	d->bitmap = t->dentry_bitmap;
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	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.
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					 */
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};

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#define F2FS_LINK_MAX	0xffffffff	/* maximum link count per file */
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#define MAX_DIR_RA_PAGES	4	/* maximum ra pages of dir */

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

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/* for in-memory extent cache entry */
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#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
521

522 523 524 525 526 527
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 */
};

528
struct extent_info {
529 530
	unsigned int fofs;		/* start offset in a file */
	unsigned int len;		/* length of the extent */
531
	u32 blk;			/* start block address of the extent */
532 533 534
};

struct extent_node {
535 536 537 538 539 540 541 542 543 544
	struct rb_node rb_node;
	union {
		struct {
			unsigned int fofs;
			unsigned int len;
			u32 blk;
		};
		struct extent_info ei;	/* extent info */

	};
545
	struct list_head list;		/* node in global extent list of sbi */
546
	struct extent_tree *et;		/* extent tree pointer */
547 548 549 550 551
};

struct extent_tree {
	nid_t ino;			/* inode number */
	struct rb_root root;		/* root of extent info rb-tree */
552
	struct extent_node *cached_en;	/* recently accessed extent node */
553
	struct extent_info largest;	/* largested extent info */
554
	struct list_head list;		/* to be used by sbi->zombie_list */
555
	rwlock_t lock;			/* protect extent info rb-tree */
556
	atomic_t node_cnt;		/* # of extent node in rb-tree*/
557 558
};

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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)
566 567 568
#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;
575
	pgoff_t *m_next_pgofs;		/* point next possible non-hole pgofs */
576
	pgoff_t *m_next_extent;		/* point to next possible extent */
577
	int m_seg_type;
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};

580
/* for flag in get_data_block */
581 582 583 584 585 586
enum {
	F2FS_GET_BLOCK_DEFAULT,
	F2FS_GET_BLOCK_FIEMAP,
	F2FS_GET_BLOCK_BMAP,
	F2FS_GET_BLOCK_PRE_DIO,
	F2FS_GET_BLOCK_PRE_AIO,
587
	F2FS_GET_BLOCK_PRECACHE,
588
};
589

590 591 592 593
/*
 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
 */
#define FADVISE_COLD_BIT	0x01
594
#define FADVISE_LOST_PINO_BIT	0x02
595
#define FADVISE_ENCRYPT_BIT	0x04
596
#define FADVISE_ENC_NAME_BIT	0x08
597
#define FADVISE_KEEP_SIZE_BIT	0x10
598
#define FADVISE_HOT_BIT		0x20
599
#define FADVISE_VERITY_BIT	0x40	/* reserved */
600

601 602 603 604 605 606
#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)
607 608 609
#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)
610 611
#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)
612 613
#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)
614 615 616
#define file_is_hot(inode)	is_file(inode, FADVISE_HOT_BIT)
#define file_set_hot(inode)	set_file(inode, FADVISE_HOT_BIT)
#define file_clear_hot(inode)	clear_file(inode, FADVISE_HOT_BIT)
617

618 619
#define DEF_DIR_LEVEL		0

620 621 622 623
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 */
624
	unsigned char i_dir_level;	/* use for dentry level for large dir */
625 626 627 628
	union {
		unsigned int i_current_depth;	/* only for directory depth */
		unsigned short i_gc_failures;	/* only for regular file */
	};
629
	unsigned int i_pino;		/* parent inode number */
630 631 632 633
	umode_t i_acl_mode;		/* keep file acl mode temporarily */

	/* Use below internally in f2fs*/
	unsigned long flags;		/* use to pass per-file flags */
634
	struct rw_semaphore i_sem;	/* protect fi info */
635
	atomic_t dirty_pages;		/* # of dirty pages */
636 637
	f2fs_hash_t chash;		/* hash value of given file name */
	unsigned int clevel;		/* maximum level of given file name */
638
	struct task_struct *task;	/* lookup and create consistency */
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	struct task_struct *cp_task;	/* separate cp/wb IO stats*/
640
	nid_t i_xattr_nid;		/* node id that contains xattrs */
641
	loff_t	last_disk_size;		/* lastly written file size */
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643 644 645 646 647 648
#ifdef CONFIG_QUOTA
	struct dquot *i_dquot[MAXQUOTAS];

	/* quota space reservation, managed internally by quota code */
	qsize_t i_reserved_quota;
#endif
649 650
	struct list_head dirty_list;	/* dirty list for dirs and files */
	struct list_head gdirty_list;	/* linked in global dirty list */
651
	struct list_head inmem_ilist;	/* list for inmem inodes */
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	struct list_head inmem_pages;	/* inmemory pages managed by f2fs */
653
	struct task_struct *inmem_task;	/* store inmemory task */
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	struct mutex inmem_lock;	/* lock for inmemory pages */
655
	struct extent_tree *extent_tree;	/* cached extent_tree entry */
656
	struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */
657
	struct rw_semaphore i_mmap_sem;
658
	struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
659

660
	int i_extra_isize;		/* size of extra space located in i_addr */
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	kprojid_t i_projid;		/* id for project quota */
662
	int i_inline_xattr_size;	/* inline xattr size */
663
	struct timespec i_crtime;	/* inode creation time */
664
	struct timespec i_disk_time[4];	/* inode disk times */
665 666 667
};

static inline void get_extent_info(struct extent_info *ext,
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					struct f2fs_extent *i_ext)
669
{
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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);
673 674 675 676 677 678
}

static inline void set_raw_extent(struct extent_info *ext,
					struct f2fs_extent *i_ext)
{
	i_ext->fofs = cpu_to_le32(ext->fofs);
679
	i_ext->blk = cpu_to_le32(ext->blk);
680 681 682
	i_ext->len = cpu_to_le32(ext->len);
}

683 684 685 686 687 688 689 690
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;
}

691 692 693
static inline bool __is_discard_mergeable(struct discard_info *back,
						struct discard_info *front)
{
694 695
	return (back->lstart + back->len == front->lstart) &&
		(back->len + front->len < DEF_MAX_DISCARD_LEN);
696 697 698 699 700 701 702 703 704 705 706 707 708 709
}

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);
}

710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728
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);
}

729
extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
730 731
static inline void __try_update_largest_extent(struct inode *inode,
			struct extent_tree *et, struct extent_node *en)
732
{
733
	if (en->ei.len > et->largest.len) {
734
		et->largest = en->ei;
735
		f2fs_mark_inode_dirty_sync(inode, true);
736
	}
737 738
}

739 740 741 742 743 744 745
/*
 * 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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};

748 749 750
struct f2fs_nm_info {
	block_t nat_blkaddr;		/* base disk address of NAT */
	nid_t max_nid;			/* maximum possible node ids */
751
	nid_t available_nids;		/* # of available node ids */
752
	nid_t next_scan_nid;		/* the next nid to be scanned */
753
	unsigned int ram_thresh;	/* control the memory footprint */
754
	unsigned int ra_nid_pages;	/* # of nid pages to be readaheaded */
755
	unsigned int dirty_nats_ratio;	/* control dirty nats ratio threshold */
756 757 758

	/* NAT cache management */
	struct radix_tree_root nat_root;/* root of the nat entry cache */
759
	struct radix_tree_root nat_set_root;/* root of the nat set cache */
760
	struct rw_semaphore nat_tree_lock;	/* protect nat_tree_lock */
761
	struct list_head nat_entries;	/* cached nat entry list (clean) */
762
	unsigned int nat_cnt;		/* the # of cached nat entries */
763
	unsigned int dirty_nat_cnt;	/* total num of nat entries in set */
764
	unsigned int nat_blocks;	/* # of nat blocks */
765 766

	/* free node ids management */
767
	struct radix_tree_root free_nid_root;/* root of the free_nid cache */
768 769
	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 */
771
	struct mutex build_lock;	/* lock for build free nids */
772
	unsigned char **free_nid_bitmap;
773
	unsigned char *nat_block_bitmap;
774
	unsigned short *free_nid_count;	/* free nid count of NAT block */
775 776 777

	/* for checkpoint */
	char *nat_bitmap;		/* NAT bitmap pointer */
778 779 780 781 782

	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 */
783 784 785
#ifdef CONFIG_F2FS_CHECK_FS
	char *nat_bitmap_mir;		/* NAT bitmap mirror */
#endif
786 787 788 789 790 791 792 793 794 795 796 797 798 799 800
	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 */
801
	bool node_changed;		/* is node block changed */
802 803
	char cur_level;			/* level of hole node page */
	char max_level;			/* level of current page located */
804 805 806 807 808 809
	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)
{
810
	memset(dn, 0, sizeof(*dn));
811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840
	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 */
841
	NO_CHECK_TYPE,
842 843
};

844 845
struct flush_cmd {
	struct completion wait;
846
	struct llist_node llnode;
847
	nid_t ino;
848 849 850
	int ret;
};

851 852 853
struct flush_cmd_control {
	struct task_struct *f2fs_issue_flush;	/* flush thread */
	wait_queue_head_t flush_wait_queue;	/* waiting queue for wake-up */
854 855
	atomic_t issued_flush;			/* # of issued flushes */
	atomic_t issing_flush;			/* # of issing flushes */
856 857
	struct llist_head issue_list;		/* list for command issue */
	struct llist_node *dispatch_list;	/* list for command dispatch */
858 859
};

860 861 862 863 864 865
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 */

866 867
	struct rw_semaphore curseg_lock;	/* for preventing curseg change */

868 869 870 871 872 873 874 875
	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 */
876 877 878

	/* a threshold to reclaim prefree segments */
	unsigned int rec_prefree_segments;
879

880 881 882
	/* for batched trimming */
	unsigned int trim_sections;		/* # of sections to trim */

883 884
	struct list_head sit_entry_set;	/* sit entry set list */

885 886
	unsigned int ipu_policy;	/* in-place-update policy */
	unsigned int min_ipu_util;	/* in-place-update threshold */
887
	unsigned int min_fsync_blocks;	/* threshold for fsync */
888
	unsigned int min_hot_blocks;	/* threshold for hot block allocation */
889
	unsigned int min_ssr_sections;	/* threshold to trigger SSR allocation */
890 891

	/* for flush command control */
892
	struct flush_cmd_control *fcc_info;
893

894 895
	/* for discard command control */
	struct discard_cmd_control *dcc_info;
896 897 898 899 900 901 902 903 904 905 906
};

/*
 * 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.
 */
907
#define WB_DATA_TYPE(p)	(__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
908 909
enum count_type {
	F2FS_DIRTY_DENTS,
910
	F2FS_DIRTY_DATA,
911
	F2FS_DIRTY_QDATA,
912 913
	F2FS_DIRTY_NODES,
	F2FS_DIRTY_META,
914
	F2FS_INMEM_PAGES,
915
	F2FS_DIRTY_IMETA,
916 917
	F2FS_WB_CP_DATA,
	F2FS_WB_DATA,
918 919 920 921
	NR_COUNT_TYPE,
};

/*
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 * The below are the page types of bios used in submit_bio().
923 924 925 926 927 928 929 930 931
 * 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.
 */
932
#define PAGE_TYPE_OF_BIO(type)	((type) > META ? META : (type))
933 934 935 936 937 938
enum page_type {
	DATA,
	NODE,
	META,
	NR_PAGE_TYPE,
	META_FLUSH,
939 940
	INMEM,		/* the below types are used by tracepoints only. */
	INMEM_DROP,
941
	INMEM_INVALIDATE,
942
	INMEM_REVOKE,
943 944
	IPU,
	OPU,
945 946
};

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

954 955 956 957 958 959
enum need_lock_type {
	LOCK_REQ = 0,
	LOCK_DONE,
	LOCK_RETRY,
};

960 961 962 963 964 965 966 967 968 969
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,
970
	CP_RECOVER_DIR,
971 972
};

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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,
};

990
struct f2fs_io_info {
991
	struct f2fs_sb_info *sbi;	/* f2fs_sb_info pointer */
992
	nid_t ino;		/* inode number */
993
	enum page_type type;	/* contains DATA/NODE/META/META_FLUSH */
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	enum temp_type temp;	/* contains HOT/WARM/COLD */
995
	int op;			/* contains REQ_OP_ */
996
	int op_flags;		/* req_flag_bits */
997
	block_t new_blkaddr;	/* new block address to be written */
998
	block_t old_blkaddr;	/* old block address before Cow */
999
	struct page *page;	/* page to be written */
1000
	struct page *encrypted_page;	/* encrypted page */
1001
	struct list_head list;		/* serialize IOs */
1002
	bool submitted;		/* indicate IO submission */
1003
	int need_lock;		/* indicate we need to lock cp_rwsem */
1004
	bool in_list;		/* indicate fio is in io_list */
1005
	bool is_meta;		/* indicate borrow meta inode mapping or not */
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	enum iostat_type io_type;	/* io type */
1007
	struct writeback_control *io_wbc; /* writeback control */
1008 1009
};

1010
#define is_read_io(rw) ((rw) == READ)
1011
struct f2fs_bio_info {
1012
	struct f2fs_sb_info *sbi;	/* f2fs superblock */
1013 1014
	struct bio *bio;		/* bios to merge */
	sector_t last_block_in_bio;	/* last block number */
1015
	struct f2fs_io_info fio;	/* store buffered io info. */
1016
	struct rw_semaphore io_rwsem;	/* blocking op for bio */
1017 1018
	spinlock_t io_lock;		/* serialize DATA/NODE IOs */
	struct list_head io_list;	/* track fios */
1019 1020
};

1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
#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
};

1035 1036 1037
enum inode_type {
	DIR_INODE,			/* for dirty dir inode */
	FILE_INODE,			/* for dirty regular/symlink inode */
1038
	DIRTY_META,			/* for all dirtied inode metadata */
1039
	ATOMIC_FILE,			/* for all atomic files */
1040 1041 1042
	NR_INODE_TYPE,
};

1043 1044 1045 1046 1047 1048 1049 1050
/* 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 */
};

1051 1052 1053 1054 1055 1056
/* 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 */
1057
	SBI_NEED_SB_WRITE,			/* need to recover superblock */
1058
	SBI_NEED_CP,				/* need to checkpoint */
1059 1060
};

1061 1062
enum {
	CP_TIME,
1063
	REQ_TIME,
1064 1065 1066
	MAX_TIME,
};

1067 1068 1069
enum {
	WHINT_MODE_OFF,		/* not pass down write hints */
	WHINT_MODE_USER,	/* try to pass down hints given by users */
1070
	WHINT_MODE_FS,		/* pass down hints with F2FS policy */
1071 1072
};

1073 1074 1075 1076 1077
enum {
	ALLOC_MODE_DEFAULT,	/* stay default */
	ALLOC_MODE_REUSE,	/* reuse segments as much as possible */
};

1078 1079 1080
enum fsync_mode {
	FSYNC_MODE_POSIX,	/* fsync follows posix semantics */
	FSYNC_MODE_STRICT,	/* fsync behaves in line with ext4 */
1081
	FSYNC_MODE_NOBARRIER,	/* fsync behaves nobarrier based on posix */
1082 1083
};

1084 1085 1086 1087 1088 1089 1090
#ifdef CONFIG_F2FS_FS_ENCRYPTION
#define DUMMY_ENCRYPTION_ENABLED(sbi) \
			(unlikely(F2FS_OPTION(sbi).test_dummy_encryption))
#else
#define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
#endif

1091 1092
struct f2fs_sb_info {
	struct super_block *sb;			/* pointer to VFS super block */
1093
	struct proc_dir_entry *s_proc;		/* proc entry */
1094
	struct f2fs_super_block *raw_super;	/* raw super block pointer */
1095
	struct rw_semaphore sb_lock;		/* lock for raw super block */
1096
	int valid_super_block;			/* valid super block no */
1097
	unsigned long s_flag;				/* flags for sbi */
1098

1099 1100 1101 1102 1103
#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

1104 1105 1106 1107 1108 1109
	/* 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 */
1110 1111

	/* for bio operations */
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	struct f2fs_bio_info *write_io[NR_PAGE_TYPE];	/* for write bios */
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	struct mutex wio_mutex[NR_PAGE_TYPE - 1][NR_TEMP_TYPE];
						/* bio ordering for NODE/DATA */
1115
	mempool_t *write_io_dummy;		/* Dummy pages */
1116 1117 1118

	/* for checkpoint */
	struct f2fs_checkpoint *ckpt;		/* raw checkpoint pointer */
1119
	int cur_cp_pack;			/* remain current cp pack */
1120
	spinlock_t cp_lock;			/* for flag in ckpt */
1121
	struct inode *meta_inode;		/* cache meta blocks */
1122
	struct mutex cp_mutex;			/* checkpoint procedure lock */
1123
	struct rw_semaphore cp_rwsem;		/* blocking FS operations */
1124
	struct rw_semaphore node_write;		/* locking node writes */
1125
	struct rw_semaphore node_change;	/* locking node change */
1126
	wait_queue_head_t cp_wait;
1127 1128
	unsigned long last_time[MAX_TIME];	/* to store time in jiffies */
	long interval_time[MAX_TIME];		/* to store thresholds */
1129

1130
	struct inode_management im[MAX_INO_ENTRY];      /* manage inode cache */
1131 1132

	/* for orphan inode, use 0'th array */
1133
	unsigned int max_orphans;		/* max orphan inodes */
1134

1135 1136 1137
	/* 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 */
1138

1139 1140
	/* for extent tree cache */
	struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1141
	struct mutex extent_tree_lock;	/* locking extent radix tree */
1142 1143
	struct list_head extent_list;		/* lru list for shrinker */
	spinlock_t extent_lock;			/* locking extent lru list */
1144
	atomic_t total_ext_tree;		/* extent tree count */
1145
	struct list_head zombie_list;		/* extent zombie tree list */
1146
	atomic_t total_zombie_tree;		/* extent zombie tree count */
1147 1148
	atomic_t total_ext_node;		/* extent info count */

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	/* basic filesystem units */
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162
	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 */
1163
	loff_t max_file_blocks;			/* max block index of file */
1164
	int dir_level;				/* directory level */
1165
	unsigned int trigger_ssr_threshold;	/* threshold to trigger ssr */
1166
	int readdir_ra;				/* readahead inode in readdir */
1167 1168 1169

	block_t user_block_count;		/* # of user blocks */
	block_t total_valid_block_count;	/* # of valid blocks */
1170
	block_t discard_blks;			/* discard command candidats */
1171
	block_t last_valid_block_count;		/* for recovery */
1172
	block_t reserved_blocks;		/* configurable reserved blocks */
1173
	block_t current_reserved_blocks;	/* current reserved blocks */
1174

1175 1176
	unsigned int nquota_files;		/* # of quota sysfile */

1177
	u32 s_next_generation;			/* for NFS support */
1178 1179

	/* # of pages, see count_type */
1180
	atomic_t nr_pages[NR_COUNT_TYPE];
1181 1182
	/* # of allocated blocks */
	struct percpu_counter alloc_valid_block_count;
1183

1184 1185 1186
	/* writeback control */
	atomic_t wb_sync_req;			/* count # of WB_SYNC threads */

1187 1188 1189
	/* valid inode count */
	struct percpu_counter total_valid_inode_count;

1190 1191 1192 1193 1194
	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 */
1195
	unsigned int cur_victim_sec;		/* current victim section num */
1196

1197 1198 1199
	/* threshold for converting bg victims for fg */
	u64 fggc_threshold;

1200 1201 1202
	/* threshold for gc trials on pinned files */
	u64 gc_pin_file_threshold;

1203 1204 1205
	/* maximum # of trials to find a victim segment for SSR and GC */
	unsigned int max_victim_search;

1206 1207 1208 1209
	/*
	 * for stat information.
	 * one is for the LFS mode, and the other is for the SSR mode.
	 */
1210
#ifdef CONFIG_F2FS_STAT_FS
1211 1212 1213
	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 */
1214
	atomic_t inplace_count;		/* # of inplace update */
1215 1216 1217 1218
	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 */
1219
	atomic_t inline_xattr;			/* # of inline_xattr inodes */
1220 1221
	atomic_t inline_inode;			/* # of inline_data inodes */
	atomic_t inline_dir;			/* # of inline_dentry inodes */
1222
	atomic_t aw_cnt;			/* # of atomic writes */
1223
	atomic_t vw_cnt;			/* # of volatile writes */
1224
	atomic_t max_aw_cnt;			/* max # of atomic writes */
1225
	atomic_t max_vw_cnt;			/* max # of volatile writes */
1226
	int bg_gc;				/* background gc calls */
1227
	unsigned int ndirty_inode[NR_INODE_TYPE];	/* # of dirty inodes */
1228
#endif
1229
	spinlock_t stat_lock;			/* lock for stat operations */
1230

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

1236 1237 1238
	/* For sysfs suppport */
	struct kobject s_kobj;
	struct completion s_kobj_unregister;
1239 1240 1241

	/* For shrinker support */
	struct list_head s_list;
1242 1243
	int s_ndevs;				/* number of devices */
	struct f2fs_dev_info *devs;		/* for device list */
1244 1245
	unsigned int dirty_device;		/* for checkpoint data flush */
	spinlock_t dev_lock;			/* protect dirty_device */
1246 1247
	struct mutex umount_mutex;
	unsigned int shrinker_run_no;
1248 1249 1250 1251

	/* For write statistics */
	u64 sectors_written_start;
	u64 kbytes_written;
1252 1253 1254

	/* Reference to checksum algorithm driver via cryptoapi */
	struct crypto_shash *s_chksum_driver;
1255

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	/* Precomputed FS UUID checksum for seeding other checksums */
	__u32 s_chksum_seed;
1258 1259
};

1260
#ifdef CONFIG_F2FS_FAULT_INJECTION
1261 1262 1263 1264
#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))
1265 1266
static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
{
1267
	struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283

	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

1284 1285 1286 1287
/* 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)						 \
1288 1289
(((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[1]) -		 \
		(s)->sectors_written_start) >> 1)
1290

1291 1292 1293 1294 1295 1296 1297
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)
{
1298
	unsigned long interval = sbi->interval_time[type] * HZ;
1299 1300 1301 1302

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

1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314
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);
}

1315 1316 1317
/*
 * Inline functions
 */
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static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
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1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338
			      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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1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
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);
}

1357 1358 1359 1360 1361 1362 1363 1364 1365 1366
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;
}

1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381
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);
}

1382 1383 1384 1385 1386 1387 1388 1389 1390 1391
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);
}

1392 1393 1394 1395 1396
static inline struct f2fs_node *F2FS_NODE(struct page *page)
{
	return (struct f2fs_node *)page_address(page);
}

1397 1398 1399 1400 1401
static inline struct f2fs_inode *F2FS_INODE(struct page *page)
{
	return &((struct f2fs_node *)page_address(page))->i;
}

1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426
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);
}

1427 1428 1429 1430 1431
static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
{
	return sbi->meta_inode->i_mapping;
}

1432 1433 1434 1435 1436
static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
{
	return sbi->node_inode->i_mapping;
}

1437 1438
static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
{
1439
	return test_bit(type, &sbi->s_flag);
1440 1441 1442
}

static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1443
{
1444
	set_bit(type, &sbi->s_flag);
1445 1446
}

1447
static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1448
{
1449
	clear_bit(type, &sbi->s_flag);
1450 1451
}

1452 1453 1454 1455 1456
static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
{
	return le64_to_cpu(cp->checkpoint_ver);
}

1457 1458 1459 1460 1461 1462 1463
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;
}

1464 1465 1466 1467 1468 1469
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)));
}

1470
static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1471 1472
{
	unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1473

1474 1475 1476
	return ckpt_flags & f;
}

1477
static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1478
{
1479 1480 1481 1482 1483 1484 1485 1486
	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);
1487 1488 1489 1490
	ckpt_flags |= f;
	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
}

1491
static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1492
{
1493 1494 1495
	unsigned long flags;

	spin_lock_irqsave(&sbi->cp_lock, flags);
1496
	__set_ckpt_flags(F2FS_CKPT(sbi), f);
1497
	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1498 1499 1500 1501 1502 1503 1504
}

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);
1505 1506 1507 1508
	ckpt_flags &= (~f);
	cp->ckpt_flags = cpu_to_le32(ckpt_flags);
}

1509 1510
static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
{
1511 1512 1513
	unsigned long flags;

	spin_lock_irqsave(&sbi->cp_lock, flags);
1514
	__clear_ckpt_flags(F2FS_CKPT(sbi), f);
1515
	spin_unlock_irqrestore(&sbi->cp_lock, flags);
1516 1517
}

1518 1519
static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
{
1520 1521
	unsigned long flags;

1522 1523 1524
	set_sbi_flag(sbi, SBI_NEED_FSCK);

	if (lock)
1525
		spin_lock_irqsave(&sbi->cp_lock, flags);
1526 1527 1528 1529
	__clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
	kfree(NM_I(sbi)->nat_bits);
	NM_I(sbi)->nat_bits = NULL;
	if (lock)
1530
		spin_unlock_irqrestore(&sbi->cp_lock, flags);
1531 1532 1533 1534 1535 1536 1537
}

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);

1538
	return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1539 1540
}

1541
static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1542
{
1543
	down_read(&sbi->cp_rwsem);
1544 1545
}

1546 1547 1548 1549 1550
static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
{
	return down_read_trylock(&sbi->cp_rwsem);
}

1551
static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1552
{
1553
	up_read(&sbi->cp_rwsem);
1554 1555
}

1556
static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1557
{
1558
	down_write(&sbi->cp_rwsem);
1559 1560
}

1561
static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1562
{
1563
	up_write(&sbi->cp_rwsem);
1564 1565
}

1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578
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)
{
1579
	return (reason & (CP_UMOUNT | CP_FASTBOOT));
1580 1581 1582 1583
}

static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
{
1584 1585
	return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
			is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1586 1587
}

1588 1589 1590
/*
 * Check whether the given nid is within node id range.
 */
1591
static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
1592
{
1593 1594
	if (unlikely(nid < F2FS_ROOT_INO(sbi)))
		return -EINVAL;
1595
	if (unlikely(nid >= NM_I(sbi)->max_nid))
1596 1597
		return -EINVAL;
	return 0;
1598 1599 1600 1601 1602 1603 1604
}

/*
 * Check whether the inode has blocks or not
 */
static inline int F2FS_HAS_BLOCKS(struct inode *inode)
{
1605 1606
	block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;

1607
	return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1608 1609
}

1610 1611 1612 1613 1614
static inline bool f2fs_has_xattr_block(unsigned int ofs)
{
	return ofs == XATTR_NODE_OFFSET;
}

1615
static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1616
					struct inode *inode, bool cap)
1617
{
1618 1619
	if (!inode)
		return true;
1620 1621
	if (!test_opt(sbi, RESERVE_ROOT))
		return false;
1622 1623
	if (IS_NOQUOTA(inode))
		return true;
1624
	if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
1625
		return true;
1626 1627
	if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
					in_group_p(F2FS_OPTION(sbi).s_resgid))
1628
		return true;
1629
	if (cap && capable(CAP_SYS_RESOURCE))
1630
		return true;
1631 1632 1633
	return false;
}

1634 1635
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,
1636
				 struct inode *inode, blkcnt_t *count)
1637
{
1638
	blkcnt_t diff = 0, release = 0;
1639
	block_t avail_user_block_count;
1640 1641 1642 1643 1644
	int ret;

	ret = dquot_reserve_block(inode, *count);
	if (ret)
		return ret;
1645

1646
#ifdef CONFIG_F2FS_FAULT_INJECTION
1647 1648
	if (time_to_inject(sbi, FAULT_BLOCK)) {
		f2fs_show_injection_info(FAULT_BLOCK);
1649 1650
		release = *count;
		goto enospc;
1651
	}
1652
#endif
1653 1654 1655 1656 1657 1658
	/*
	 * 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));

1659 1660
	spin_lock(&sbi->stat_lock);
	sbi->total_valid_block_count += (block_t)(*count);
1661 1662
	avail_user_block_count = sbi->user_block_count -
					sbi->current_reserved_blocks;
1663

1664
	if (!__allow_reserved_blocks(sbi, inode, true))
1665
		avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
1666

1667 1668
	if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
		diff = sbi->total_valid_block_count - avail_user_block_count;
1669 1670
		if (diff > *count)
			diff = *count;
1671
		*count -= diff;
1672
		release = diff;
1673
		sbi->total_valid_block_count -= diff;
1674 1675
		if (!*count) {
			spin_unlock(&sbi->stat_lock);
1676
			percpu_counter_sub(&sbi->alloc_valid_block_count, diff);
1677
			goto enospc;
1678
		}
1679 1680
	}
	spin_unlock(&sbi->stat_lock);
1681

1682
	if (unlikely(release))
1683 1684 1685 1686 1687 1688 1689
		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;
1690 1691
}

1692
static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
1693
						struct inode *inode,
1694
						block_t count)
1695
{
1696 1697
	blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;

1698
	spin_lock(&sbi->stat_lock);
1699
	f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
1700
	f2fs_bug_on(sbi, inode->i_blocks < sectors);
1701
	sbi->total_valid_block_count -= (block_t)count;
1702 1703 1704 1705
	if (sbi->reserved_blocks &&
		sbi->current_reserved_blocks < sbi->reserved_blocks)
		sbi->current_reserved_blocks = min(sbi->reserved_blocks,
					sbi->current_reserved_blocks + count);
1706
	spin_unlock(&sbi->stat_lock);
1707
	f2fs_i_blocks_write(inode, count, false, true);
1708 1709 1710 1711
}

static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
{
1712
	atomic_inc(&sbi->nr_pages[count_type]);
1713

1714 1715
	if (count_type == F2FS_DIRTY_DATA || count_type == F2FS_INMEM_PAGES ||
		count_type == F2FS_WB_CP_DATA || count_type == F2FS_WB_DATA)
1716 1717
		return;

1718
	set_sbi_flag(sbi, SBI_IS_DIRTY);
1719 1720
}

1721
static inline void inode_inc_dirty_pages(struct inode *inode)
1722
{
1723
	atomic_inc(&F2FS_I(inode)->dirty_pages);
1724 1725
	inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1726 1727
	if (IS_NOQUOTA(inode))
		inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1728 1729 1730 1731
}

static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
{
1732
	atomic_dec(&sbi->nr_pages[count_type]);
1733 1734
}

1735
static inline void inode_dec_dirty_pages(struct inode *inode)
1736
{
1737 1738
	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
			!S_ISLNK(inode->i_mode))
1739 1740
		return;

1741
	atomic_dec(&F2FS_I(inode)->dirty_pages);
1742 1743
	dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
				F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
1744 1745
	if (IS_NOQUOTA(inode))
		dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
1746 1747
}

1748
static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
1749
{
1750
	return atomic_read(&sbi->nr_pages[count_type]);
1751 1752
}

1753
static inline int get_dirty_pages(struct inode *inode)
1754
{
1755
	return atomic_read(&F2FS_I(inode)->dirty_pages);
1756 1757
}

1758 1759
static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
{
1760
	unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
1761 1762 1763 1764
	unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
						sbi->log_blocks_per_seg;

	return segs / sbi->segs_per_sec;
1765 1766
}

1767 1768
static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
{
1769
	return sbi->total_valid_block_count;
1770 1771
}

1772 1773 1774 1775 1776
static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
{
	return sbi->discard_blks;
}

1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
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;
}

1790 1791 1792 1793 1794
static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
{
	return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
}

1795 1796 1797
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
1798 1799
	int offset;

1800 1801 1802 1803 1804 1805
	if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
		offset = (flag == SIT_BITMAP) ?
			le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
		return &ckpt->sit_nat_version_bitmap + offset;
	}

1806
	if (__cp_payload(sbi) > 0) {
C
Changman Lee 已提交
1807 1808 1809
		if (flag == NAT_BITMAP)
			return &ckpt->sit_nat_version_bitmap;
		else
J
Jaegeuk Kim 已提交
1810
			return (unsigned char *)ckpt + F2FS_BLKSIZE;
C
Changman Lee 已提交
1811 1812
	} else {
		offset = (flag == NAT_BITMAP) ?
1813
			le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
C
Changman Lee 已提交
1814 1815
		return &ckpt->sit_nat_version_bitmap + offset;
	}
1816 1817 1818 1819
}

static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
{
1820
	block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
1821

1822
	if (sbi->cur_cp_pack == 2)
1823
		start_addr += sbi->blocks_per_seg;
1824 1825
	return start_addr;
}
1826

1827 1828 1829
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);
1830

1831 1832
	if (sbi->cur_cp_pack == 1)
		start_addr += sbi->blocks_per_seg;
1833 1834 1835
	return start_addr;
}

1836 1837 1838 1839 1840
static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
{
	sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
}

1841 1842 1843 1844 1845
static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
{
	return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
}

1846
static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
1847
					struct inode *inode, bool is_inode)
1848 1849 1850
{
	block_t	valid_block_count;
	unsigned int valid_node_count;
1851 1852 1853 1854 1855 1856 1857
	bool quota = inode && !is_inode;

	if (quota) {
		int ret = dquot_reserve_block(inode, 1);
		if (ret)
			return ret;
	}
1858

1859 1860 1861 1862 1863 1864 1865
#ifdef CONFIG_F2FS_FAULT_INJECTION
	if (time_to_inject(sbi, FAULT_BLOCK)) {
		f2fs_show_injection_info(FAULT_BLOCK);
		goto enospc;
	}
#endif

1866 1867
	spin_lock(&sbi->stat_lock);

1868 1869 1870
	valid_block_count = sbi->total_valid_block_count +
					sbi->current_reserved_blocks + 1;

1871
	if (!__allow_reserved_blocks(sbi, inode, false))
1872
		valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
1873 1874

	if (unlikely(valid_block_count > sbi->user_block_count)) {
1875
		spin_unlock(&sbi->stat_lock);
1876
		goto enospc;
1877 1878
	}

1879
	valid_node_count = sbi->total_valid_node_count + 1;
1880
	if (unlikely(valid_node_count > sbi->total_node_count)) {
1881
		spin_unlock(&sbi->stat_lock);
1882
		goto enospc;
1883 1884
	}

1885 1886
	sbi->total_valid_node_count++;
	sbi->total_valid_block_count++;
1887 1888
	spin_unlock(&sbi->stat_lock);

1889 1890 1891 1892
	if (inode) {
		if (is_inode)
			f2fs_mark_inode_dirty_sync(inode, true);
		else
1893
			f2fs_i_blocks_write(inode, 1, true, true);
1894
	}
1895

1896
	percpu_counter_inc(&sbi->alloc_valid_block_count);
1897 1898 1899 1900 1901 1902
	return 0;

enospc:
	if (quota)
		dquot_release_reservation_block(inode, 1);
	return -ENOSPC;
1903 1904 1905
}

static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
1906
					struct inode *inode, bool is_inode)
1907 1908 1909
{
	spin_lock(&sbi->stat_lock);

1910 1911
	f2fs_bug_on(sbi, !sbi->total_valid_block_count);
	f2fs_bug_on(sbi, !sbi->total_valid_node_count);
1912
	f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
1913

1914 1915
	sbi->total_valid_node_count--;
	sbi->total_valid_block_count--;
1916 1917 1918
	if (sbi->reserved_blocks &&
		sbi->current_reserved_blocks < sbi->reserved_blocks)
		sbi->current_reserved_blocks++;
1919 1920

	spin_unlock(&sbi->stat_lock);
1921 1922 1923

	if (!is_inode)
		f2fs_i_blocks_write(inode, 1, false, true);
1924 1925 1926 1927
}

static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
{
1928
	return sbi->total_valid_node_count;
1929 1930 1931 1932
}

static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
{
1933
	percpu_counter_inc(&sbi->total_valid_inode_count);
1934 1935
}

1936
static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
1937
{
1938
	percpu_counter_dec(&sbi->total_valid_inode_count);
1939 1940
}

1941
static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
1942
{
1943
	return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
1944 1945
}

1946 1947 1948
static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
						pgoff_t index, bool for_write)
{
1949 1950
#ifdef CONFIG_F2FS_FAULT_INJECTION
	struct page *page = find_lock_page(mapping, index);
1951

1952 1953 1954
	if (page)
		return page;

1955 1956
	if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
		f2fs_show_injection_info(FAULT_PAGE_ALLOC);
1957
		return NULL;
1958
	}
1959
#endif
1960 1961 1962 1963 1964
	if (!for_write)
		return grab_cache_page(mapping, index);
	return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
}

1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977
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);
}

1978 1979 1980 1981 1982 1983 1984 1985 1986 1987
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);
}

1988 1989
static inline void f2fs_put_page(struct page *page, int unlock)
{
1990
	if (!page)
1991 1992 1993
		return;

	if (unlock) {
1994
		f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
1995 1996
		unlock_page(page);
	}
1997
	put_page(page);
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
}

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,
2011
					size_t size)
2012
{
2013
	return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
2014 2015
}

2016 2017 2018 2019 2020
static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
						gfp_t flags)
{
	void *entry;

2021 2022 2023
	entry = kmem_cache_alloc(cachep, flags);
	if (!entry)
		entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
2024 2025 2026
	return entry;
}

2027 2028
static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
						int npages, bool no_fail)
2029 2030 2031
{
	struct bio *bio;

2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045
	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);
2046 2047
}

2048 2049 2050 2051 2052 2053 2054
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();
}

2055 2056 2057 2058
#define RAW_IS_INODE(p)	((p)->footer.nid == (p)->footer.ino)

static inline bool IS_INODE(struct page *page)
{
2059
	struct f2fs_node *p = F2FS_NODE(page);
2060

2061 2062 2063
	return RAW_IS_INODE(p);
}

2064 2065 2066 2067 2068 2069
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;
}

2070 2071 2072 2073 2074
static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
{
	return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
}

2075 2076 2077
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)
2078 2079 2080
{
	struct f2fs_node *raw_node;
	__le32 *addr_array;
2081 2082
	int base = 0;
	bool is_inode = IS_INODE(node_page);
2083

2084
	raw_node = F2FS_NODE(node_page);
2085 2086

	/* from GC path only */
2087 2088
	if (is_inode) {
		if (!inode)
2089
			base = offset_in_addr(&raw_node->i);
2090 2091
		else if (f2fs_has_extra_attr(inode))
			base = get_extra_isize(inode);
2092 2093
	}

2094
	addr_array = blkaddr_in_node(raw_node);
2095
	return le32_to_cpu(addr_array[base + offset]);
2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106
}

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

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

2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124
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;
}

2125
static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136
{
	int mask;
	int ret;

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

2137
static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148
{
	int mask;
	int ret;

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

2149 2150 2151 2152 2153 2154 2155 2156 2157
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
2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171
#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;
}

2172 2173 2174
/* used for f2fs_inode_info->flags */
enum {
	FI_NEW_INODE,		/* indicate newly allocated inode */
2175
	FI_DIRTY_INODE,		/* indicate inode is dirty or not */
2176
	FI_AUTO_RECOVER,	/* indicate inode is recoverable */
2177
	FI_DIRTY_DIR,		/* indicate directory has dirty pages */
2178 2179 2180
	FI_INC_LINK,		/* need to increment i_nlink */
	FI_ACL_MODE,		/* indicate acl mode */
	FI_NO_ALLOC,		/* should not allocate any blocks */
2181
	FI_FREE_NID,		/* free allocated nide */
2182
	FI_NO_EXTENT,		/* not to use the extent cache */
2183
	FI_INLINE_XATTR,	/* used for inline xattr */
2184
	FI_INLINE_DATA,		/* used for inline data*/
2185
	FI_INLINE_DENTRY,	/* used for inline dentry */
2186 2187
	FI_APPEND_WRITE,	/* inode has appended data */
	FI_UPDATE_WRITE,	/* inode has in-place-update data */
J
Jaegeuk Kim 已提交
2188 2189
	FI_NEED_IPU,		/* used for ipu per file */
	FI_ATOMIC_FILE,		/* indicate atomic file */
2190
	FI_ATOMIC_COMMIT,	/* indicate the state of atomical committing */
2191
	FI_VOLATILE_FILE,	/* indicate volatile file */
2192
	FI_FIRST_BLOCK_WRITTEN,	/* indicate #0 data block was written */
2193
	FI_DROP_CACHE,		/* drop dirty page cache */
2194
	FI_DATA_EXIST,		/* indicate data exists */
2195
	FI_INLINE_DOTS,		/* indicate inline dot dentries */
C
Chao Yu 已提交
2196
	FI_DO_DEFRAG,		/* indicate defragment is running */
2197
	FI_DIRTY_FILE,		/* indicate regular/symlink has dirty pages */
2198
	FI_NO_PREALLOC,		/* indicate skipped preallocated blocks */
2199
	FI_HOT_DATA,		/* indicate file is hot */
2200
	FI_EXTRA_ATTR,		/* indicate file has extra attribute */
C
Chao Yu 已提交
2201
	FI_PROJ_INHERIT,	/* indicate file inherits projectid */
2202
	FI_PIN_FILE,		/* indicate file should not be gced */
2203 2204
};

2205 2206 2207 2208 2209 2210 2211
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:
2212
	case FI_NEW_INODE:
2213 2214 2215 2216
		if (set)
			return;
	case FI_DATA_EXIST:
	case FI_INLINE_DOTS:
2217
	case FI_PIN_FILE:
2218
		f2fs_mark_inode_dirty_sync(inode, true);
2219 2220 2221
	}
}

2222
static inline void set_inode_flag(struct inode *inode, int flag)
2223
{
2224 2225
	if (!test_bit(flag, &F2FS_I(inode)->flags))
		set_bit(flag, &F2FS_I(inode)->flags);
2226
	__mark_inode_dirty_flag(inode, flag, true);
2227 2228
}

2229
static inline int is_inode_flag_set(struct inode *inode, int flag)
2230
{
2231
	return test_bit(flag, &F2FS_I(inode)->flags);
2232 2233
}

2234
static inline void clear_inode_flag(struct inode *inode, int flag)
2235
{
2236 2237
	if (test_bit(flag, &F2FS_I(inode)->flags))
		clear_bit(flag, &F2FS_I(inode)->flags);
2238
	__mark_inode_dirty_flag(inode, flag, false);
2239 2240
}

2241
static inline void set_acl_inode(struct inode *inode, umode_t mode)
2242
{
2243 2244
	F2FS_I(inode)->i_acl_mode = mode;
	set_inode_flag(inode, FI_ACL_MODE);
2245
	f2fs_mark_inode_dirty_sync(inode, false);
2246 2247
}

2248
static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2249
{
2250 2251 2252 2253
	if (inc)
		inc_nlink(inode);
	else
		drop_nlink(inode);
2254
	f2fs_mark_inode_dirty_sync(inode, true);
2255 2256
}

2257
static inline void f2fs_i_blocks_write(struct inode *inode,
2258
					block_t diff, bool add, bool claim)
2259
{
2260 2261 2262
	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);

2263 2264 2265 2266 2267 2268 2269 2270 2271 2272
	/* 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);
	}

2273
	f2fs_mark_inode_dirty_sync(inode, true);
2274 2275
	if (clean || recover)
		set_inode_flag(inode, FI_AUTO_RECOVER);
2276 2277
}

2278 2279
static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
{
2280 2281 2282
	bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
	bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);

2283 2284 2285 2286
	if (i_size_read(inode) == i_size)
		return;

	i_size_write(inode, i_size);
2287
	f2fs_mark_inode_dirty_sync(inode, true);
2288 2289
	if (clean || recover)
		set_inode_flag(inode, FI_AUTO_RECOVER);
2290 2291
}

2292
static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2293
{
2294
	F2FS_I(inode)->i_current_depth = depth;
2295
	f2fs_mark_inode_dirty_sync(inode, true);
2296 2297
}

2298 2299 2300 2301 2302 2303 2304
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);
}

2305
static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2306
{
2307
	F2FS_I(inode)->i_xattr_nid = xnid;
2308
	f2fs_mark_inode_dirty_sync(inode, true);
2309 2310 2311 2312 2313
}

static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
{
	F2FS_I(inode)->i_pino = pino;
2314
	f2fs_mark_inode_dirty_sync(inode, true);
2315 2316
}

2317
static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2318
{
2319 2320
	struct f2fs_inode_info *fi = F2FS_I(inode);

2321
	if (ri->i_inline & F2FS_INLINE_XATTR)
2322
		set_bit(FI_INLINE_XATTR, &fi->flags);
2323
	if (ri->i_inline & F2FS_INLINE_DATA)
2324
		set_bit(FI_INLINE_DATA, &fi->flags);
2325
	if (ri->i_inline & F2FS_INLINE_DENTRY)
2326
		set_bit(FI_INLINE_DENTRY, &fi->flags);
2327
	if (ri->i_inline & F2FS_DATA_EXIST)
2328
		set_bit(FI_DATA_EXIST, &fi->flags);
2329
	if (ri->i_inline & F2FS_INLINE_DOTS)
2330
		set_bit(FI_INLINE_DOTS, &fi->flags);
2331 2332
	if (ri->i_inline & F2FS_EXTRA_ATTR)
		set_bit(FI_EXTRA_ATTR, &fi->flags);
2333 2334
	if (ri->i_inline & F2FS_PIN_FILE)
		set_bit(FI_PIN_FILE, &fi->flags);
2335 2336
}

2337
static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2338 2339 2340
{
	ri->i_inline = 0;

2341
	if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2342
		ri->i_inline |= F2FS_INLINE_XATTR;
2343
	if (is_inode_flag_set(inode, FI_INLINE_DATA))
2344
		ri->i_inline |= F2FS_INLINE_DATA;
2345
	if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2346
		ri->i_inline |= F2FS_INLINE_DENTRY;
2347
	if (is_inode_flag_set(inode, FI_DATA_EXIST))
2348
		ri->i_inline |= F2FS_DATA_EXIST;
2349
	if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2350
		ri->i_inline |= F2FS_INLINE_DOTS;
2351 2352
	if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
		ri->i_inline |= F2FS_EXTRA_ATTR;
2353 2354
	if (is_inode_flag_set(inode, FI_PIN_FILE))
		ri->i_inline |= F2FS_PIN_FILE;
2355 2356 2357 2358 2359
}

static inline int f2fs_has_extra_attr(struct inode *inode)
{
	return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2360 2361
}

2362 2363
static inline int f2fs_has_inline_xattr(struct inode *inode)
{
2364
	return is_inode_flag_set(inode, FI_INLINE_XATTR);
2365 2366
}

2367
static inline unsigned int addrs_per_inode(struct inode *inode)
2368
{
2369
	return CUR_ADDRS_PER_INODE(inode) - get_inline_xattr_addrs(inode);
2370 2371
}

2372
static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2373
{
2374
	struct f2fs_inode *ri = F2FS_INODE(page);
2375

2376
	return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2377
					get_inline_xattr_addrs(inode)]);
2378 2379 2380 2381
}

static inline int inline_xattr_size(struct inode *inode)
{
2382
	return get_inline_xattr_addrs(inode) * sizeof(__le32);
2383 2384
}

2385 2386
static inline int f2fs_has_inline_data(struct inode *inode)
{
2387
	return is_inode_flag_set(inode, FI_INLINE_DATA);
2388 2389
}

2390 2391
static inline int f2fs_exist_data(struct inode *inode)
{
2392
	return is_inode_flag_set(inode, FI_DATA_EXIST);
2393 2394
}

2395 2396
static inline int f2fs_has_inline_dots(struct inode *inode)
{
2397
	return is_inode_flag_set(inode, FI_INLINE_DOTS);
2398 2399
}

2400 2401 2402 2403 2404
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
2405 2406
static inline bool f2fs_is_atomic_file(struct inode *inode)
{
2407
	return is_inode_flag_set(inode, FI_ATOMIC_FILE);
J
Jaegeuk Kim 已提交
2408 2409
}

2410 2411 2412 2413 2414
static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
{
	return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
}

2415 2416
static inline bool f2fs_is_volatile_file(struct inode *inode)
{
2417
	return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2418 2419
}

2420 2421
static inline bool f2fs_is_first_block_written(struct inode *inode)
{
2422
	return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2423 2424
}

2425 2426
static inline bool f2fs_is_drop_cache(struct inode *inode)
{
2427
	return is_inode_flag_set(inode, FI_DROP_CACHE);
2428 2429
}

2430
static inline void *inline_data_addr(struct inode *inode, struct page *page)
2431
{
2432
	struct f2fs_inode *ri = F2FS_INODE(page);
2433
	int extra_size = get_extra_isize(inode);
2434

2435
	return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2436 2437
}

2438 2439
static inline int f2fs_has_inline_dentry(struct inode *inode)
{
2440
	return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2441 2442
}

2443 2444 2445 2446 2447 2448 2449 2450
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;
2451
	f2fs_mark_inode_dirty_sync(inode, true);
2452 2453 2454 2455 2456
}

static inline void clear_file(struct inode *inode, int type)
{
	F2FS_I(inode)->i_advise &= ~type;
2457
	f2fs_mark_inode_dirty_sync(inode, true);
2458 2459
}

2460 2461
static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
{
2462 2463
	bool ret;

2464 2465 2466 2467 2468 2469 2470 2471 2472 2473
	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) ||
2474
			i_size_read(inode) & ~PAGE_MASK)
2475
		return false;
2476

2477 2478 2479 2480 2481 2482 2483 2484 2485 2486
	if (!timespec_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
		return false;
	if (!timespec_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
		return false;
	if (!timespec_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
		return false;
	if (!timespec_equal(F2FS_I(inode)->i_disk_time + 3,
						&F2FS_I(inode)->i_crtime))
		return false;

2487 2488 2489 2490 2491
	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;
2492 2493
}

2494
static inline bool f2fs_readonly(struct super_block *sb)
J
Jaegeuk Kim 已提交
2495
{
2496
	return sb_rdonly(sb);
J
Jaegeuk Kim 已提交
2497 2498
}

2499 2500
static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
{
2501
	return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2502 2503
}

2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514
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;
}

2515 2516 2517
static inline bool f2fs_may_extent_tree(struct inode *inode)
{
	if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) ||
2518
			is_inode_flag_set(inode, FI_NO_EXTENT))
2519 2520
		return false;

2521
	return S_ISREG(inode->i_mode);
2522 2523
}

2524 2525
static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
2526
{
2527
#ifdef CONFIG_F2FS_FAULT_INJECTION
2528 2529
	if (time_to_inject(sbi, FAULT_KMALLOC)) {
		f2fs_show_injection_info(FAULT_KMALLOC);
2530
		return NULL;
2531
	}
2532
#endif
2533 2534 2535
	return kmalloc(size, flags);
}

C
Chao Yu 已提交
2536 2537 2538 2539 2540 2541
static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
					size_t size, gfp_t flags)
{
	return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
}

2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559
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);
}

2560
static inline int get_extra_isize(struct inode *inode)
2561
{
2562
	return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2563 2564
}

2565 2566 2567 2568 2569
static inline int get_inline_xattr_addrs(struct inode *inode)
{
	return F2FS_I(inode)->i_inline_xattr_size;
}

2570
#define get_inode_mode(i) \
2571
	((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2572 2573
	 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))

2574 2575 2576 2577
#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
2578 2579 2580 2581 2582 2583
#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
2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608
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);
}

2609 2610 2611
/*
 * file.c
 */
2612 2613 2614 2615
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);
2616 2617
int f2fs_getattr(const struct path *path, struct kstat *stat,
			u32 request_mask, unsigned int flags);
2618 2619
int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
2620
void truncate_data_blocks_range(struct dnode_of_data *dn, int count);
2621
int f2fs_precache_extents(struct inode *inode);
2622 2623
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);
2624
int f2fs_pin_file_control(struct inode *inode, bool inc);
2625 2626 2627 2628

/*
 * inode.c
 */
2629
void f2fs_set_inode_flags(struct inode *inode);
C
Chao Yu 已提交
2630 2631
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);
2632 2633 2634
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);
2635 2636
void update_inode(struct inode *inode, struct page *node_page);
void update_inode_page(struct inode *inode);
2637 2638 2639
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);
2640 2641 2642 2643

/*
 * namei.c
 */
2644
int update_extension_list(struct f2fs_sb_info *sbi, const char *name,
2645
							bool hot, bool set);
2646 2647 2648 2649 2650
struct dentry *f2fs_get_parent(struct dentry *child);

/*
 * dir.c
 */
2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689
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);
2690

2691 2692
static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
{
2693
	return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name,
2694
				inode, inode->i_ino, inode->i_mode);
2695 2696
}

2697 2698 2699
/*
 * super.c
 */
2700 2701
int f2fs_inode_dirtied(struct inode *inode, bool sync);
void f2fs_inode_synced(struct inode *inode);
2702
int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
2703
void f2fs_quota_off_umount(struct super_block *sb);
2704 2705
int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
int f2fs_sync_fs(struct super_block *sb, int sync);
2706
extern __printf(3, 4)
2707
void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...);
2708
int sanity_check_ckpt(struct f2fs_sb_info *sbi);
2709 2710 2711 2712

/*
 * hash.c
 */
2713 2714
f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
				struct fscrypt_name *fname);
2715 2716 2717 2718 2719 2720 2721

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

2722 2723 2724 2725 2726 2727 2728 2729
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);
2730
int truncate_xattr_node(struct inode *inode);
2731 2732 2733
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);
2734
struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs);
2735 2736 2737 2738 2739 2740
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);
2741
int sync_node_pages(struct f2fs_sb_info *sbi, struct writeback_control *wbc,
C
Chao Yu 已提交
2742
			bool do_balance, enum iostat_type io_type);
2743
void build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
2744 2745 2746 2747 2748
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);
2749
int recover_xattr_data(struct inode *inode, struct page *page);
2750
int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
2751
void restore_node_summary(struct f2fs_sb_info *sbi,
2752
			unsigned int segno, struct f2fs_summary_block *sum);
2753
void flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
2754 2755
int build_node_manager(struct f2fs_sb_info *sbi);
void destroy_node_manager(struct f2fs_sb_info *sbi);
2756
int __init create_node_manager_caches(void);
2757 2758 2759 2760 2761
void destroy_node_manager_caches(void);

/*
 * segment.c
 */
2762
bool need_SSR(struct f2fs_sb_info *sbi);
2763
void register_inmem_page(struct inode *inode, struct page *page);
2764
void drop_inmem_pages_all(struct f2fs_sb_info *sbi);
2765
void drop_inmem_pages(struct inode *inode);
2766
void drop_inmem_page(struct inode *inode, struct page *page);
2767 2768 2769
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);
2770
int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
2771
int create_flush_cmd_control(struct f2fs_sb_info *sbi);
2772
int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
2773 2774 2775
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);
2776
void drop_discard_cmd(struct f2fs_sb_info *sbi);
2777
void stop_discard_thread(struct f2fs_sb_info *sbi);
2778
bool f2fs_wait_discard_bios(struct f2fs_sb_info *sbi);
2779 2780 2781 2782 2783 2784 2785 2786
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
2787 2788
void write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
						enum iostat_type io_type);
2789 2790
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);
2791
int rewrite_data_page(struct f2fs_io_info *fio);
2792 2793 2794 2795 2796 2797 2798 2799 2800
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,
2801 2802
			struct f2fs_summary *sum, int type,
			struct f2fs_io_info *fio, bool add_list);
2803 2804
void f2fs_wait_on_page_writeback(struct page *page,
			enum page_type type, bool ordered);
2805
void f2fs_wait_on_block_writeback(struct f2fs_sb_info *sbi, block_t blkaddr);
2806 2807 2808 2809 2810 2811 2812
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);
2813 2814
int __init create_segment_manager_caches(void);
void destroy_segment_manager_caches(void);
2815
int rw_hint_to_seg_type(enum rw_hint hint);
2816 2817
enum rw_hint io_type_to_rw_hint(struct f2fs_sb_info *sbi, enum page_type type,
				enum temp_type temp);
2818 2819 2820 2821

/*
 * checkpoint.c
 */
2822 2823 2824 2825 2826 2827 2828 2829 2830
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
2831
			long nr_to_write, enum iostat_type io_type);
2832 2833 2834 2835
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);
2836 2837 2838 2839
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);
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851
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);
2852
int __init create_checkpoint_caches(void);
2853 2854 2855 2856 2857
void destroy_checkpoint_caches(void);

/*
 * data.c
 */
2858 2859
int f2fs_init_post_read_processing(void);
void f2fs_destroy_post_read_processing(void);
2860 2861
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,
2862
				struct inode *inode, nid_t ino, pgoff_t idx,
2863 2864
				enum page_type type);
void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
2865
int f2fs_submit_page_bio(struct f2fs_io_info *fio);
2866
int f2fs_submit_page_write(struct f2fs_io_info *fio);
2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888
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);
2889 2890
bool should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
bool should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
C
Chao Yu 已提交
2891 2892 2893
int __f2fs_write_data_pages(struct address_space *mapping,
						struct writeback_control *wbc,
						enum iostat_type io_type);
2894 2895 2896
void f2fs_invalidate_page(struct page *page, unsigned int offset,
			unsigned int length);
int f2fs_release_page(struct page *page, gfp_t wait);
2897
#ifdef CONFIG_MIGRATION
2898 2899
int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
			struct page *page, enum migrate_mode mode);
2900
#endif
2901
bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
2902 2903 2904 2905

/*
 * gc.c
 */
2906 2907 2908
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);
2909 2910
int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
			unsigned int segno);
2911
void build_gc_manager(struct f2fs_sb_info *sbi);
2912 2913 2914 2915

/*
 * recovery.c
 */
2916 2917
int recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
bool space_for_roll_forward(struct f2fs_sb_info *sbi);
2918 2919 2920 2921 2922 2923 2924 2925 2926 2927

/*
 * 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;
2928 2929
	unsigned long long hit_largest, hit_cached, hit_rbtree;
	unsigned long long hit_total, total_ext;
2930
	int ext_tree, zombie_tree, ext_node;
2931 2932
	int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
	int ndirty_data, ndirty_qdata;
2933
	int inmem_pages;
2934
	unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
2935 2936
	int nats, dirty_nats, sits, dirty_sits;
	int free_nids, avail_nids, alloc_nids;
2937
	int total_count, utilization;
2938
	int bg_gc, nr_wb_cp_data, nr_wb_data;
2939 2940
	int nr_flushing, nr_flushed, flush_list_empty;
	int nr_discarding, nr_discarded;
2941
	int nr_discard_cmd;
2942
	unsigned int undiscard_blks;
2943
	int inline_xattr, inline_inode, inline_dir, append, update, orphans;
2944
	int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
2945
	unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
2946 2947 2948 2949
	unsigned int bimodal, avg_vblocks;
	int util_free, util_valid, util_invalid;
	int rsvd_segs, overp_segs;
	int dirty_count, node_pages, meta_pages;
2950
	int prefree_count, call_count, cp_count, bg_cp_count;
2951
	int tot_segs, node_segs, data_segs, free_segs, free_secs;
2952
	int bg_node_segs, bg_data_segs;
2953
	int tot_blks, data_blks, node_blks;
2954
	int bg_data_blks, bg_node_blks;
2955 2956 2957 2958 2959 2960
	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];
2961
	unsigned int inplace_count;
2962
	unsigned long long base_mem, cache_mem, page_mem;
2963 2964
};

2965 2966
static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
{
2967
	return (struct f2fs_stat_info *)sbi->stat_info;
2968 2969
}

2970
#define stat_inc_cp_count(si)		((si)->cp_count++)
2971
#define stat_inc_bg_cp_count(si)	((si)->bg_cp_count++)
2972 2973
#define stat_inc_call_count(si)		((si)->call_count++)
#define stat_inc_bggc_count(sbi)	((sbi)->bg_gc++)
2974 2975
#define stat_inc_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]++)
#define stat_dec_dirty_inode(sbi, type)	((sbi)->ndirty_inode[type]--)
2976 2977 2978 2979
#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))
2980 2981 2982 2983 2984 2985 2986 2987 2988 2989
#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)
2990 2991 2992
#define stat_inc_inline_inode(inode)					\
	do {								\
		if (f2fs_has_inline_data(inode))			\
2993
			(atomic_inc(&F2FS_I_SB(inode)->inline_inode));	\
2994 2995 2996 2997
	} while (0)
#define stat_dec_inline_inode(inode)					\
	do {								\
		if (f2fs_has_inline_data(inode))			\
2998
			(atomic_dec(&F2FS_I_SB(inode)->inline_inode));	\
2999
	} while (0)
3000 3001 3002
#define stat_inc_inline_dir(inode)					\
	do {								\
		if (f2fs_has_inline_dentry(inode))			\
3003
			(atomic_inc(&F2FS_I_SB(inode)->inline_dir));	\
3004 3005 3006 3007
	} while (0)
#define stat_dec_inline_dir(inode)					\
	do {								\
		if (f2fs_has_inline_dentry(inode))			\
3008
			(atomic_dec(&F2FS_I_SB(inode)->inline_dir));	\
3009
	} while (0)
3010 3011 3012 3013
#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]++)
3014 3015
#define stat_inc_inplace_blocks(sbi)					\
		(atomic_inc(&(sbi)->inplace_count))
3016
#define stat_inc_atomic_write(inode)					\
3017
		(atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
3018
#define stat_dec_atomic_write(inode)					\
3019
		(atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
3020 3021 3022 3023 3024 3025 3026
#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)
3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037
#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)
3038
#define stat_inc_seg_count(sbi, type, gc_type)				\
3039
	do {								\
3040
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3041 3042
		si->tot_segs++;						\
		if ((type) == SUM_TYPE_DATA) {				\
3043
			si->data_segs++;				\
3044 3045
			si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0;	\
		} else {						\
3046
			si->node_segs++;				\
3047 3048
			si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0;	\
		}							\
3049 3050 3051
	} while (0)

#define stat_inc_tot_blk_count(si, blks)				\
3052
	((si)->tot_blks += (blks))
3053

3054
#define stat_inc_data_blk_count(sbi, blks, gc_type)			\
3055
	do {								\
3056
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3057 3058
		stat_inc_tot_blk_count(si, blks);			\
		si->data_blks += (blks);				\
3059
		si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3060 3061
	} while (0)

3062
#define stat_inc_node_blk_count(sbi, blks, gc_type)			\
3063
	do {								\
3064
		struct f2fs_stat_info *si = F2FS_STAT(sbi);		\
3065 3066
		stat_inc_tot_blk_count(si, blks);			\
		si->node_blks += (blks);				\
3067
		si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0;	\
3068 3069
	} while (0)

3070 3071
int f2fs_build_stats(struct f2fs_sb_info *sbi);
void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3072
int __init f2fs_create_root_stats(void);
3073
void f2fs_destroy_root_stats(void);
3074
#else
3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103
#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)
3104 3105 3106

static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3107
static inline int __init f2fs_create_root_stats(void) { return 0; }
3108
static inline void f2fs_destroy_root_stats(void) { }
3109 3110 3111 3112 3113 3114 3115 3116 3117 3118
#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;
3119
extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3120
extern const struct inode_operations f2fs_special_inode_operations;
J
Jaegeuk Kim 已提交
3121
extern struct kmem_cache *inode_entry_slab;
3122

3123 3124 3125
/*
 * inline.c
 */
3126 3127 3128
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);
3129
void truncate_inline_inode(struct inode *inode, struct page *ipage, u64 from);
3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149
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);
3150

3151 3152 3153
/*
 * shrinker.c
 */
3154 3155 3156 3157 3158 3159
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);
3160

3161 3162 3163
/*
 * extent_cache.c
 */
3164 3165 3166 3167 3168 3169 3170 3171 3172 3173
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);
3174 3175
bool __check_rb_tree_consistence(struct f2fs_sb_info *sbi,
						struct rb_root *root);
3176 3177 3178 3179 3180 3181 3182 3183
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);
3184
void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3185 3186
			pgoff_t fofs, block_t blkaddr, unsigned int len);
void init_extent_cache_info(struct f2fs_sb_info *sbi);
3187 3188 3189
int __init create_extent_cache(void);
void destroy_extent_cache(void);

3190 3191 3192
/*
 * sysfs.c
 */
3193 3194 3195 3196
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);
3197

3198 3199 3200
/*
 * crypto support
 */
3201
static inline bool f2fs_encrypted_inode(struct inode *inode)
3202 3203 3204 3205
{
	return file_is_encrypt(inode);
}

3206 3207 3208 3209 3210
static inline bool f2fs_encrypted_file(struct inode *inode)
{
	return f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode);
}

3211 3212 3213 3214
static inline void f2fs_set_encrypted_inode(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
	file_set_encrypt(inode);
3215
	inode->i_flags |= S_ENCRYPTED;
3216 3217 3218
#endif
}

3219 3220 3221 3222 3223
/*
 * Returns true if the reads of the inode's data need to undergo some
 * postprocessing step, like decryption or authenticity verification.
 */
static inline bool f2fs_post_read_required(struct inode *inode)
3224
{
3225
	return f2fs_encrypted_file(inode);
3226 3227
}

3228 3229 3230 3231
#define F2FS_FEATURE_FUNCS(name, flagname) \
static inline int f2fs_sb_has_##name(struct super_block *sb) \
{ \
	return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_##flagname); \
3232 3233
}

3234 3235 3236 3237 3238 3239 3240 3241
F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
3242
F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
3243

3244 3245
#ifdef CONFIG_BLK_DEV_ZONED
static inline int get_blkz_type(struct f2fs_sb_info *sbi,
3246
			struct block_device *bdev, block_t blkaddr)
3247 3248
{
	unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3249
	int i;
3250

3251 3252 3253 3254
	for (i = 0; i < sbi->s_ndevs; i++)
		if (FDEV(i).bdev == bdev)
			return FDEV(i).blkz_type[zno];
	return -EINVAL;
3255 3256 3257
}
#endif

3258
static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi)
3259
{
3260 3261
	struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);

3262
	return blk_queue_discard(q) || f2fs_sb_has_blkzoned(sbi->sb);
3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279
}

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;
	}
}

3280 3281 3282
static inline bool f2fs_may_encrypt(struct inode *inode)
{
#ifdef CONFIG_F2FS_FS_ENCRYPTION
3283
	umode_t mode = inode->i_mode;
3284 3285 3286 3287 3288 3289 3290

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

3291 3292
static inline bool f2fs_force_buffered_io(struct inode *inode, int rw)
{
3293
	return (f2fs_post_read_required(inode) ||
3294 3295 3296 3297
			(rw == WRITE && test_opt(F2FS_I_SB(inode), LFS)) ||
			F2FS_I_SB(inode)->s_ndevs);
}

3298
#endif
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