fs/f2fs/f2fs.h

1569 struct f2fs_sb_info {  struct
1570 	struct super_block *sb;			/* pointer to VFS super block */
1571 	struct proc_dir_entry *s_proc;		/* proc entry */
1572 	struct f2fs_super_block *raw_super;	/* raw super block pointer */
1573 	struct f2fs_rwsem sb_lock;		/* lock for raw super block */
1574 	int valid_super_block;			/* valid super block no */
1575 	unsigned long s_flag;				/* flags for sbi */
1576 	struct mutex writepages;		/* mutex for writepages() */
1579 	unsigned int blocks_per_blkz;		/* F2FS blocks per zone */
1580 	unsigned int log_blocks_per_blkz;	/* log2 F2FS blocks per zone */
1584 	struct f2fs_nm_info *nm_info;		/* node manager */
1585 	struct inode *node_inode;		/* cache node blocks */
1588 	struct f2fs_sm_info *sm_info;		/* segment manager */
1591 	struct f2fs_bio_info *write_io[NR_PAGE_TYPE];	/* for write bios */
1593 	struct f2fs_rwsem io_order_lock;
1594 	mempool_t *write_io_dummy;		/* Dummy pages */
1597 	struct f2fs_checkpoint *ckpt;		/* raw checkpoint pointer */
1598 	int cur_cp_pack;			/* remain current cp pack */
1599 	spinlock_t cp_lock;			/* for flag in ckpt */
1600 	struct inode *meta_inode;		/* cache meta blocks */
1601 	struct f2fs_rwsem cp_global_sem;	/* checkpoint procedure lock */
1602 	struct f2fs_rwsem cp_rwsem;		/* blocking FS operations */
1603 	struct f2fs_rwsem node_write;		/* locking node writes */
1604 	struct f2fs_rwsem node_change;	/* locking node change */
1605 	wait_queue_head_t cp_wait;
1606 	unsigned long last_time[MAX_TIME];	/* to store time in jiffies */
1607 	long interval_time[MAX_TIME];		/* to store thresholds */
1608 	struct ckpt_req_control cprc_info;	/* for checkpoint request control */
1610 	struct inode_management im[MAX_INO_ENTRY];	/* manage inode cache */
1612 	spinlock_t fsync_node_lock;		/* for node entry lock */
1613 	struct list_head fsync_node_list;	/* node list head */
1614 	unsigned int fsync_seg_id;		/* sequence id */
1615 	unsigned int fsync_node_num;		/* number of node entries */
1618 	unsigned int max_orphans;		/* max orphan inodes */
1621 	struct list_head inode_list[NR_INODE_TYPE];	/* dirty inode list */
1622 	spinlock_t inode_lock[NR_INODE_TYPE];	/* for dirty inode list lock */
1623 	struct mutex flush_lock;		/* for flush exclusion */
1626 	struct extent_tree_info extent_tree[NR_EXTENT_CACHES];
1627 	atomic64_t allocated_data_blocks;	/* for block age extent_cache */
1630 	unsigned int hot_data_age_threshold;
1631 	unsigned int warm_data_age_threshold;
1632 	unsigned int last_age_weight;
1635 	unsigned int log_sectors_per_block;	/* log2 sectors per block */
1636 	unsigned int log_blocksize;		/* log2 block size */
1637 	unsigned int blocksize;			/* block size */
1638 	unsigned int root_ino_num;		/* root inode number*/
1639 	unsigned int node_ino_num;		/* node inode number*/
1640 	unsigned int meta_ino_num;		/* meta inode number*/
1641 	unsigned int log_blocks_per_seg;	/* log2 blocks per segment */
1642 	unsigned int blocks_per_seg;		/* blocks per segment */
1643 	unsigned int segs_per_sec;		/* segments per section */
1644 	unsigned int secs_per_zone;		/* sections per zone */
1645 	unsigned int total_sections;		/* total section count */
1646 	unsigned int total_node_count;		/* total node block count */
1647 	unsigned int total_valid_node_count;	/* valid node block count */
1648 	int dir_level;				/* directory level */
1649 	int readdir_ra;				/* readahead inode in readdir */
1650 	u64 max_io_bytes;			/* max io bytes to merge IOs */
1652 	block_t user_block_count;		/* # of user blocks */
1653 	block_t total_valid_block_count;	/* # of valid blocks */
1654 	block_t discard_blks;			/* discard command candidats */
1655 	block_t last_valid_block_count;		/* for recovery */
1656 	block_t reserved_blocks;		/* configurable reserved blocks */
1657 	block_t current_reserved_blocks;	/* current reserved blocks */
1660 	block_t unusable_block_count;		/* # of blocks saved by last cp */
1662 	unsigned int nquota_files;		/* # of quota sysfile */
1663 	struct f2fs_rwsem quota_sem;		/* blocking cp for flags */
1666 	atomic_t nr_pages[NR_COUNT_TYPE];
1668 	struct percpu_counter alloc_valid_block_count;
1671 	atomic_t wb_sync_req[META];	/* count # of WB_SYNC threads */
1674 	struct percpu_counter total_valid_inode_count;
1676 	struct f2fs_mount_info mount_opt;	/* mount options */
1679 	struct f2fs_rwsem gc_lock;		/*
1683 	struct f2fs_gc_kthread	*gc_thread;	/* GC thread */
1684 	struct atgc_management am;		/* atgc management */
1685 	unsigned int cur_victim_sec;		/* current victim section num */
1686 	unsigned int gc_mode;			/* current GC state */
1687 	unsigned int next_victim_seg[2];	/* next segment in victim section */
1690 	unsigned int atomic_files;		/* # of opened atomic file */
1691 	unsigned long long skipped_atomic_files[2];	/* FG_GC and BG_GC */
1692 	unsigned long long skipped_gc_rwsem;		/* FG_GC only */
1695 	u64 gc_pin_file_threshold;
1696 	struct f2fs_rwsem pin_sem;
1699 	unsigned int max_victim_search;
1701 	unsigned int migration_granularity;
1703 	atomic_t no_cp_fsync_pages;
1710 	struct f2fs_stat_info *stat_info;	/* FS status information */
1711 	atomic_t meta_count[META_MAX];		/* # of meta blocks */
1712 	unsigned int segment_count[2];		/* # of allocated segments */
1713 	unsigned int block_count[2];		/* # of allocated blocks */
1714 	atomic_t inplace_count;		/* # of inplace update */
1716 	atomic64_t total_hit_ext[NR_EXTENT_CACHES];
1718 	atomic64_t read_hit_rbtree[NR_EXTENT_CACHES];
1720 	atomic64_t read_hit_cached[NR_EXTENT_CACHES];
1722 	atomic64_t read_hit_largest;
1723 	atomic_t inline_xattr;			/* # of inline_xattr inodes */
1724 	atomic_t inline_inode;			/* # of inline_data inodes */
1725 	atomic_t inline_dir;			/* # of inline_dentry inodes */
1726 	atomic_t compr_inode;			/* # of compressed inodes */
1727 	atomic64_t compr_blocks;		/* # of compressed blocks */
1728 	atomic_t vw_cnt;			/* # of volatile writes */
1729 	atomic_t max_aw_cnt;			/* max # of atomic writes */
1730 	atomic_t max_vw_cnt;			/* max # of volatile writes */
1731 	unsigned int io_skip_bggc;		/* skip background gc for in-flight IO */
1732 	unsigned int other_skip_bggc;		/* skip background gc for other reasons */
1733 	unsigned int ndirty_inode[NR_INODE_TYPE];	/* # of dirty inodes */
1735 	spinlock_t stat_lock;			/* lock for stat operations */
1738 	spinlock_t iostat_lock;
1739 	unsigned long long rw_iostat[NR_IO_TYPE];
1740 	unsigned long long prev_rw_iostat[NR_IO_TYPE];
1741 	bool iostat_enable;
1742 	unsigned long iostat_next_period;
1743 	unsigned int iostat_period_ms;
1746 	unsigned int data_io_flag;
1747 	unsigned int node_io_flag;
1750 	struct kobject s_kobj;			/* /sys/fs/f2fs/<devname> */
1751 	struct completion s_kobj_unregister;
1753 	struct kobject s_stat_kobj;		/* /sys/fs/f2fs/<devname>/stat */
1754 	struct completion s_stat_kobj_unregister;
1756 	struct kobject s_feature_list_kobj;		/* /sys/fs/f2fs/<devname>/feature_list */
1757 	struct completion s_feature_list_kobj_unregister;
1760 	struct list_head s_list;
1761 	int s_ndevs;				/* number of devices */
1762 	struct f2fs_dev_info *devs;		/* for device list */
1763 	unsigned int dirty_device;		/* for checkpoint data flush */
1764 	spinlock_t dev_lock;			/* protect dirty_device */
1765 	struct mutex umount_mutex;
1766 	unsigned int shrinker_run_no;
1769 	u64 sectors_written_start;
1770 	u64 kbytes_written;
1773 	struct crypto_shash *s_chksum_driver;
1776 	__u32 s_chksum_seed;
1778 	struct workqueue_struct *post_read_wq;	/* post read workqueue */
1780 	struct kmem_cache *inline_xattr_slab;	/* inline xattr entry */
1781 	unsigned int inline_xattr_slab_size;	/* default inline xattr slab size */
1784 	unsigned int gc_segment_mode;		/* GC state for reclaimed segments */
1785 	unsigned int gc_reclaimed_segs[MAX_GC_MODE];	/* Reclaimed segs for each mode */
1788 	struct kmem_cache *page_array_slab;	/* page array entry */
1789 	unsigned int page_array_slab_size;	/* default page array slab size */
1792 	u64 compr_written_block;
1793 	u64 compr_saved_block;
1817 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)  in time_to_inject()  argument