151 	struct page *(*find_first_sb)(struct super_block *sb, u64 *ofs);
152 	struct page *(*find_last_sb)(struct super_block *sb, u64 *ofs);
155 	void (*writeseg)(struct super_block *sb, u64 ofs, size_t len);
156 	int (*erase)(struct super_block *sb, loff_t ofs, size_t len,
158 	int (*can_write_buf)(struct super_block *sb, u64 ofs);
551 int logfs_rewrite_block(struct inode *inode, u64 bix, u64 ofs,
553 int logfs_is_valid_block(struct super_block *sb, u64 ofs, u64 ino, u64 bix,
567 void logfs_set_segment_used(struct super_block *sb, u64 ofs, int increment);
585 int logfs_erase_segment(struct super_block *sb, u32 ofs, int ensure_erase);
586 int wbuf_read(struct super_block *sb, u64 ofs, size_t len, void *buf);
587 int logfs_segment_read(struct inode *inode, struct page *page, u64 ofs, u64 bix,
605 int __logfs_buf_write(struct logfs_area *area, u64 ofs, void *buf, size_t len,
608 static inline int logfs_buf_write(struct logfs_area *area, u64 ofs,  in logfs_buf_write()  argument
611 	return __logfs_buf_write(area, ofs, buf, len, 0);  in logfs_buf_write()
614 static inline int logfs_buf_recover(struct logfs_area *area, u64 ofs,  in logfs_buf_recover()  argument
617 	return __logfs_buf_write(area, ofs, buf, len, 1);  in logfs_buf_recover()
668 static inline u64 dev_ofs(struct super_block *sb, u32 segno, u32 ofs)  in dev_ofs()  argument
670 	return ((u64)segno << logfs_super(sb)->s_segshift) + ofs;  in dev_ofs()
673 static inline u32 seg_no(struct super_block *sb, u64 ofs)  in seg_no()  argument
675 	return ofs >> logfs_super(sb)->s_segshift;  in seg_no()
678 static inline u32 seg_ofs(struct super_block *sb, u64 ofs)  in seg_ofs()  argument
680 	return ofs & logfs_super(sb)->s_segmask;  in seg_ofs()
683 static inline u64 seg_align(struct super_block *sb, u64 ofs)  in seg_align()  argument
685 	return ofs & ~logfs_super(sb)->s_segmask;  in seg_align()