f2fs.h (feeb0debfb3454726ebea3871cecac35e144d1bb) f2fs.h (caf0047e7e1e60a7ad1d655d3b81b32e2dfb6095)
1/*
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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23#ifdef CONFIG_F2FS_CHECK_FS
24#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
25#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
26#else
27#define f2fs_bug_on(sbi, condition) \
28 do { \
29 if (unlikely(condition)) { \
30 WARN_ON(1); \
1/*
2 * fs/f2fs/f2fs.h
3 *
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as

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23#ifdef CONFIG_F2FS_CHECK_FS
24#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
25#define f2fs_down_write(x, y) down_write_nest_lock(x, y)
26#else
27#define f2fs_bug_on(sbi, condition) \
28 do { \
29 if (unlikely(condition)) { \
30 WARN_ON(1); \
31 sbi->need_fsck = true; \
31 set_sbi_flag(sbi, SBI_NEED_FSCK); \
32 } \
33 } while (0)
34#define f2fs_down_write(x, y) down_write(x)
35#endif
36
37/*
38 * For mount options
39 */

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514/* for inner inode cache management */
515struct inode_management {
516 struct radix_tree_root ino_root; /* ino entry array */
517 spinlock_t ino_lock; /* for ino entry lock */
518 struct list_head ino_list; /* inode list head */
519 unsigned long ino_num; /* number of entries */
520};
521
32 } \
33 } while (0)
34#define f2fs_down_write(x, y) down_write(x)
35#endif
36
37/*
38 * For mount options
39 */

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514/* for inner inode cache management */
515struct inode_management {
516 struct radix_tree_root ino_root; /* ino entry array */
517 spinlock_t ino_lock; /* for ino entry lock */
518 struct list_head ino_list; /* inode list head */
519 unsigned long ino_num; /* number of entries */
520};
521
522/* For s_flag in struct f2fs_sb_info */
523enum {
524 SBI_IS_DIRTY, /* dirty flag for checkpoint */
525 SBI_IS_CLOSE, /* specify unmounting */
526 SBI_NEED_FSCK, /* need fsck.f2fs to fix */
527 SBI_POR_DOING, /* recovery is doing or not */
528};
529
522struct f2fs_sb_info {
523 struct super_block *sb; /* pointer to VFS super block */
524 struct proc_dir_entry *s_proc; /* proc entry */
525 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
526 struct f2fs_super_block *raw_super; /* raw super block pointer */
530struct f2fs_sb_info {
531 struct super_block *sb; /* pointer to VFS super block */
532 struct proc_dir_entry *s_proc; /* proc entry */
533 struct buffer_head *raw_super_buf; /* buffer head of raw sb */
534 struct f2fs_super_block *raw_super; /* raw super block pointer */
527 int s_dirty; /* dirty flag for checkpoint */
528 bool need_fsck; /* need fsck.f2fs to fix */
529 bool s_closing; /* specify unmounting */
535 int s_flag; /* flags for sbi */
530
531 /* for node-related operations */
532 struct f2fs_nm_info *nm_info; /* node manager */
533 struct inode *node_inode; /* cache node blocks */
534
535 /* for segment-related operations */
536 struct f2fs_sm_info *sm_info; /* segment manager */
537
538 /* for bio operations */
539 struct f2fs_bio_info read_io; /* for read bios */
540 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
541
542 /* for checkpoint */
543 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
544 struct inode *meta_inode; /* cache meta blocks */
545 struct mutex cp_mutex; /* checkpoint procedure lock */
546 struct rw_semaphore cp_rwsem; /* blocking FS operations */
547 struct rw_semaphore node_write; /* locking node writes */
548 struct mutex writepages; /* mutex for writepages() */
536
537 /* for node-related operations */
538 struct f2fs_nm_info *nm_info; /* node manager */
539 struct inode *node_inode; /* cache node blocks */
540
541 /* for segment-related operations */
542 struct f2fs_sm_info *sm_info; /* segment manager */
543
544 /* for bio operations */
545 struct f2fs_bio_info read_io; /* for read bios */
546 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */
547
548 /* for checkpoint */
549 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
550 struct inode *meta_inode; /* cache meta blocks */
551 struct mutex cp_mutex; /* checkpoint procedure lock */
552 struct rw_semaphore cp_rwsem; /* blocking FS operations */
553 struct rw_semaphore node_write; /* locking node writes */
554 struct mutex writepages; /* mutex for writepages() */
549 bool por_doing; /* recovery is doing or not */
550 wait_queue_head_t cp_wait;
551
552 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
553
554 /* for orphan inode, use 0'th array */
555 unsigned int max_orphans; /* max orphan inodes */
556
557 /* for directory inode management */

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694 return sbi->meta_inode->i_mapping;
695}
696
697static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
698{
699 return sbi->node_inode->i_mapping;
700}
701
555 wait_queue_head_t cp_wait;
556
557 struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
558
559 /* for orphan inode, use 0'th array */
560 unsigned int max_orphans; /* max orphan inodes */
561
562 /* for directory inode management */

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699 return sbi->meta_inode->i_mapping;
700}
701
702static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
703{
704 return sbi->node_inode->i_mapping;
705}
706
702static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi)
707static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
703{
708{
704 sbi->s_dirty = 1;
709 return sbi->s_flag & (0x01 << type);
705}
706
710}
711
707static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi)
712static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
708{
713{
709 sbi->s_dirty = 0;
714 sbi->s_flag |= (0x01 << type);
710}
711
715}
716
717static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
718{
719 sbi->s_flag &= ~(0x01 << type);
720}
721
712static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
713{
714 return le64_to_cpu(cp->checkpoint_ver);
715}
716
717static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
718{
719 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);

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813 inode->i_blocks -= count;
814 sbi->total_valid_block_count -= (block_t)count;
815 spin_unlock(&sbi->stat_lock);
816}
817
818static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
819{
820 atomic_inc(&sbi->nr_pages[count_type]);
722static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
723{
724 return le64_to_cpu(cp->checkpoint_ver);
725}
726
727static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
728{
729 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);

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823 inode->i_blocks -= count;
824 sbi->total_valid_block_count -= (block_t)count;
825 spin_unlock(&sbi->stat_lock);
826}
827
828static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
829{
830 atomic_inc(&sbi->nr_pages[count_type]);
821 F2FS_SET_SB_DIRT(sbi);
831 set_sbi_flag(sbi, SBI_IS_DIRTY);
822}
823
824static inline void inode_inc_dirty_pages(struct inode *inode)
825{
826 atomic_inc(&F2FS_I(inode)->dirty_pages);
827 if (S_ISDIR(inode->i_mode))
828 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
829}

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833
834static inline void inode_inc_dirty_pages(struct inode *inode)
835{
836 atomic_inc(&F2FS_I(inode)->dirty_pages);
837 if (S_ISDIR(inode->i_mode))
838 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS);
839}

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