16 static int logfs_mtd_read(struct super_block *sb, loff_t ofs, size_t len,  in logfs_mtd_read()  argument
23 	ret = mtd_read(mtd, ofs, len, &retlen, buf);  in logfs_mtd_read()
29 	if (retlen != len)  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
47 	BUG_ON((ofs >= mtd->size) || (len > mtd->size - ofs));  in loffs_mtd_write()
49 	BUG_ON(len > PAGE_CACHE_SIZE);  in loffs_mtd_write()
51 	page_end = PAGE_CACHE_ALIGN(ofs + len) - 1;  in loffs_mtd_write()
52 	ret = mtd_write(mtd, ofs, len, &retlen, buf);  in loffs_mtd_write()
53 	if (ret || (retlen != len))  in loffs_mtd_write()
73 				size_t len)  in logfs_mtd_erase_mapping()  argument
80 	for (index = ofs >> PAGE_SHIFT; index < (ofs + len) >> PAGE_SHIFT; index++) {  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
98 	BUG_ON(len % mtd->erasesize);  in logfs_mtd_erase()
105 	ei.len = len;  in logfs_mtd_erase()
115 	return logfs_mtd_erase_mapping(sb, ofs, len);  in logfs_mtd_erase()
205 static void logfs_mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)  in logfs_mtd_writeseg()  argument
213 	if (len == 0) {  in logfs_mtd_writeseg()
223 		len += head;  in logfs_mtd_writeseg()
225 	len = PAGE_ALIGN(len);  in logfs_mtd_writeseg()
226 	__logfs_mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);  in logfs_mtd_writeseg()