49 static inline void fat_dir_readahead(struct inode *dir, sector_t iblock,  in fat_dir_readahead()  argument
52 	struct super_block *sb = dir->i_sb;  in fat_dir_readahead()
61 	if (!is_fat32(sbi) && (dir->i_ino == MSDOS_ROOT_INO))  in fat_dir_readahead()
82 static int fat__get_entry(struct inode *dir, loff_t *pos,  in fat__get_entry()  argument
85 	struct super_block *sb = dir->i_sb;  in fat__get_entry()
94 	err = fat_bmap(dir, iblock, &phys, &mapped_blocks, 0, false);  in fat__get_entry()
98 	fat_dir_readahead(dir, iblock, phys);  in fat__get_entry()
116 static inline int fat_get_entry(struct inode *dir, loff_t *pos,  in fat_get_entry()  argument
123 				MSDOS_SB(dir->i_sb)->dir_per_block - 1) {  in fat_get_entry()
128 	return fat__get_entry(dir, pos, bh, de);  in fat_get_entry()
279 static int fat_parse_long(struct inode *dir, loff_t *pos,  in fat_parse_long()  argument
316 		if (fat_get_entry(dir, pos, bh, de) < 0)  in fat_parse_long()
869 static int fat_get_short_entry(struct inode *dir, loff_t *pos,  in fat_get_short_entry()  argument
873 	while (fat_get_entry(dir, pos, bh, de) >= 0) {  in fat_get_short_entry()
890 int fat_get_dotdot_entry(struct inode *dir, struct buffer_head **bh,  in fat_get_dotdot_entry()  argument
896 	while (fat_get_short_entry(dir, &offset, bh, de) >= 0) {  in fat_get_dotdot_entry()
905 int fat_dir_empty(struct inode *dir)  in fat_dir_empty()  argument
914 	while (fat_get_short_entry(dir, &cpos, &bh, &de) >= 0) {  in fat_dir_empty()
930 int fat_subdirs(struct inode *dir)  in fat_subdirs()  argument
939 	while (fat_get_short_entry(dir, &cpos, &bh, &de) >= 0) {  in fat_subdirs()
951 int fat_scan(struct inode *dir, const unsigned char *name,  in fat_scan()  argument
954 	struct super_block *sb = dir->i_sb;  in fat_scan()
958 	while (fat_get_short_entry(dir, &sinfo->slot_off, &sinfo->bh,  in fat_scan()
975 int fat_scan_logstart(struct inode *dir, int i_logstart,  in fat_scan_logstart()  argument
978 	struct super_block *sb = dir->i_sb;  in fat_scan_logstart()
982 	while (fat_get_short_entry(dir, &sinfo->slot_off, &sinfo->bh,  in fat_scan_logstart()
994 static int __fat_remove_entries(struct inode *dir, loff_t pos, int nr_slots)  in __fat_remove_entries()  argument
996 	struct super_block *sb = dir->i_sb;  in __fat_remove_entries()
1003 		if (fat_get_entry(dir, &pos, &bh, &de) < 0) {  in __fat_remove_entries()
1015 		mark_buffer_dirty_inode(bh, dir);  in __fat_remove_entries()
1016 		if (IS_DIRSYNC(dir))  in __fat_remove_entries()
1029 int fat_remove_entries(struct inode *dir, struct fat_slot_info *sinfo)  in fat_remove_entries()  argument
1031 	struct super_block *sb = dir->i_sb;  in fat_remove_entries()
1050 	mark_buffer_dirty_inode(bh, dir);  in fat_remove_entries()
1051 	if (IS_DIRSYNC(dir))  in fat_remove_entries()
1056 	inode_inc_iversion(dir);  in fat_remove_entries()
1064 		err = __fat_remove_entries(dir, sinfo->slot_off, nr_slots);  in fat_remove_entries()
1071 	fat_truncate_time(dir, NULL, S_ATIME|S_MTIME);  in fat_remove_entries()
1072 	if (IS_DIRSYNC(dir))  in fat_remove_entries()
1073 		(void)fat_sync_inode(dir);  in fat_remove_entries()
1075 		mark_inode_dirty(dir);  in fat_remove_entries()
1081 static int fat_zeroed_cluster(struct inode *dir, sector_t blknr, int nr_used,  in fat_zeroed_cluster()  argument
1084 	struct super_block *sb = dir->i_sb;  in fat_zeroed_cluster()
1102 		mark_buffer_dirty_inode(bhs[n], dir);  in fat_zeroed_cluster()
1107 			if (IS_DIRSYNC(dir)) {  in fat_zeroed_cluster()
1117 	if (IS_DIRSYNC(dir)) {  in fat_zeroed_cluster()
1133 int fat_alloc_new_dir(struct inode *dir, struct timespec64 *ts)  in fat_alloc_new_dir()  argument
1135 	struct super_block *sb = dir->i_sb;  in fat_alloc_new_dir()
1144 	err = fat_alloc_clusters(dir, &cluster, 1);  in fat_alloc_new_dir()
1178 	fat_set_start(&de[1], MSDOS_I(dir)->i_logstart);  in fat_alloc_new_dir()
1183 	mark_buffer_dirty_inode(bhs[0], dir);  in fat_alloc_new_dir()
1185 	err = fat_zeroed_cluster(dir, blknr, 1, bhs, MAX_BUF_PER_PAGE);  in fat_alloc_new_dir()
1192 	fat_free_clusters(dir, cluster);  in fat_alloc_new_dir()
1198 static int fat_add_new_entries(struct inode *dir, void *slots, int nr_slots,  in fat_add_new_entries()  argument
1202 	struct super_block *sb = dir->i_sb;  in fat_add_new_entries()
1218 	err = fat_alloc_clusters(dir, cluster, *nr_cluster);  in fat_add_new_entries()
1245 			mark_buffer_dirty_inode(bhs[n], dir);  in fat_add_new_entries()
1263 	err = fat_zeroed_cluster(dir, start_blknr, ++n, bhs, MAX_BUF_PER_PAGE);  in fat_add_new_entries()
1276 	fat_free_clusters(dir, cluster[0]);  in fat_add_new_entries()
1281 int fat_add_entries(struct inode *dir, void *slots, int nr_slots,  in fat_add_entries()  argument
1284 	struct super_block *sb = dir->i_sb;  in fat_add_entries()
1298 	while (fat_get_entry(dir, &pos, &bh, &de) > -1) {  in fat_add_entries()
1319 	if (dir->i_ino == MSDOS_ROOT_INO) {  in fat_add_entries()
1322 	} else if (MSDOS_I(dir)->i_start == 0) {  in fat_add_entries()
1324 		       MSDOS_I(dir)->i_pos);  in fat_add_entries()
1347 			mark_buffer_dirty_inode(bhs[i], dir);  in fat_add_entries()
1352 		if (long_bhs && IS_DIRSYNC(dir))  in fat_add_entries()
1358 			mark_buffer_dirty_inode(bhs[i], dir);  in fat_add_entries()
1359 			if (IS_DIRSYNC(dir))  in fat_add_entries()
1376 		cluster = fat_add_new_entries(dir, slots, nr_slots, &nr_cluster,  in fat_add_entries()
1382 		err = fat_chain_add(dir, cluster, nr_cluster);  in fat_add_entries()
1384 			fat_free_clusters(dir, cluster);  in fat_add_entries()
1387 		if (dir->i_size & (sbi->cluster_size - 1)) {  in fat_add_entries()
1389 			dir->i_size = (dir->i_size + sbi->cluster_size - 1)  in fat_add_entries()
1392 		dir->i_size += nr_cluster << sbi->cluster_bits;  in fat_add_entries()
1393 		MSDOS_I(dir)->mmu_private += nr_cluster << sbi->cluster_bits;  in fat_add_entries()
1411 		__fat_remove_entries(dir, pos, free_slots);  in fat_add_entries()