do_truncate      1830 fs/exec.c      	if (!ispipe && do_truncate(file->f_path.dentry, 0, 0, file) != 0)
do_truncate      1591 fs/namei.c     			error = do_truncate(dentry, 0,
do_truncate       277 fs/open.c      		error = do_truncate(path.dentry, length, 0, NULL);
do_truncate       332 fs/open.c      		error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, file);
do_truncate      1687 include/linux/fs.h extern int do_truncate(struct dentry *, loff_t start, unsigned int time_attrs,