16 static int logfs_mtd_read(struct super_block *sb, loff_t ofs, size_t len,  in logfs_mtd_read()  argument
19 	struct mtd_info *mtd = logfs_super(sb)->s_mtd;  in logfs_mtd_read()
35 static int loffs_mtd_write(struct super_block *sb, loff_t ofs, size_t len,  in loffs_mtd_write()  argument
38 	struct logfs_super *super = logfs_super(sb);  in loffs_mtd_write()
72 static int logfs_mtd_erase_mapping(struct super_block *sb, loff_t ofs,  in logfs_mtd_erase_mapping()  argument
75 	struct logfs_super *super = logfs_super(sb);  in logfs_mtd_erase_mapping()
90 static int logfs_mtd_erase(struct super_block *sb, loff_t ofs, size_t len,  in logfs_mtd_erase()  argument
93 	struct mtd_info *mtd = logfs_super(sb)->s_mtd;  in logfs_mtd_erase()
99 	if (logfs_super(sb)->s_flags & LOGFS_SB_FLAG_RO)  in logfs_mtd_erase()
115 	return logfs_mtd_erase_mapping(sb, ofs, len);  in logfs_mtd_erase()
118 static void logfs_mtd_sync(struct super_block *sb)  in logfs_mtd_sync()  argument
120 	struct mtd_info *mtd = logfs_super(sb)->s_mtd;  in logfs_mtd_sync()
127 	struct super_block *sb = _sb;  in logfs_mtd_readpage()  local
130 	err = logfs_mtd_read(sb, page->index << PAGE_SHIFT, PAGE_SIZE,  in logfs_mtd_readpage()
148 static struct page *logfs_mtd_find_first_sb(struct super_block *sb, u64 *ofs)  in logfs_mtd_find_first_sb()  argument
150 	struct logfs_super *super = logfs_super(sb);  in logfs_mtd_find_first_sb()
162 	return read_cache_page(mapping, *ofs >> PAGE_SHIFT, filler, sb);  in logfs_mtd_find_first_sb()
165 static struct page *logfs_mtd_find_last_sb(struct super_block *sb, u64 *ofs)  in logfs_mtd_find_last_sb()  argument
167 	struct logfs_super *super = logfs_super(sb);  in logfs_mtd_find_last_sb()
180 	return read_cache_page(mapping, *ofs >> PAGE_SHIFT, filler, sb);  in logfs_mtd_find_last_sb()
183 static int __logfs_mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,  in __logfs_mtd_writeseg()  argument
186 	struct logfs_super *super = logfs_super(sb);  in __logfs_mtd_writeseg()
195 		err = loffs_mtd_write(sb, page->index << PAGE_SHIFT, PAGE_SIZE,  in __logfs_mtd_writeseg()
205 static void logfs_mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)  in logfs_mtd_writeseg()  argument
207 	struct logfs_super *super = logfs_super(sb);  in logfs_mtd_writeseg()
226 	__logfs_mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);  in logfs_mtd_writeseg()
234 static int logfs_mtd_can_write_buf(struct super_block *sb, u64 ofs)  in logfs_mtd_can_write_buf()  argument
236 	struct logfs_super *super = logfs_super(sb);  in logfs_mtd_can_write_buf()
243 	err = logfs_mtd_read(sb, ofs, super->s_writesize, buf);  in logfs_mtd_can_write_buf()