fs/fat/namei_vfat.c

931 static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
941 	struct super_block *sb = old_dir->i_sb;
947 	err = vfat_find(old_dir, &old_dentry->d_name, &old_sinfo);
951 	if (old_dir != new_dir) {
958 	ts = current_time(old_dir);
987 		drop_nlink(old_dir);
992 	err = fat_remove_entries(old_dir, &old_sinfo);	/* and releases bh */
996 	vfat_update_dir_metadata(old_dir, &ts);
1017 		corrupt |= vfat_update_dotdot_de(old_dir, old_inode, dotdot_bh,
1060 static int vfat_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
1066 	struct timespec64 ts = current_time(old_dir);
1069 	struct super_block *sb = old_dir->i_sb;
1078 	if (old_dir != new_dir) {
1095 	err = vfat_sync_ipos(old_dir, new_inode);
1110 		err = vfat_update_dotdot_de(old_dir, new_inode, new_dotdot_bh,
1119 			vfat_move_nlink(old_dir, new_dir);
1121 			vfat_move_nlink(new_dir, old_dir);
1124 	vfat_update_dir_metadata(old_dir, &ts);
1126 	if (old_dir != new_dir)
1144 		corrupt |= vfat_update_dotdot_de(old_dir, old_inode,
1151 	corrupt |= vfat_sync_ipos(old_dir, old_inode);
1161 static int vfat_rename2(struct mnt_idmap *idmap, struct inode *old_dir,
1169 		return vfat_rename_exchange(old_dir, old_dentry,
1174 	return vfat_rename(old_dir, old_dentry, new_dir, new_dentry);