taglinefilesource code
ext_truncate60fs/ext/dir.cext_truncate,    /* truncate */
ext_truncate68fs/ext/file.cext_truncate,    /* truncate */
ext_truncate29fs/ext/inode.cext_truncate(inode);
ext_truncate89include/linux/ext_fs.hextern void ext_truncate(struct inode *);