Re: [PATCH v5 1/2] Add ftruncate_file that truncates a struct file

[Matthew Wilcox <willy@xxxxxxxxxxxxx>]

On Wed, Jan 24, 2024 at 10:33:00AM +0200, Tony Solomonik wrote:
>  	/* explicitly opened as large or we are on 64-bit box */
> -	if (f.file->f_flags & O_LARGEFILE)
> +	if (file->f_flags & O_LARGEFILE)
>  		small = 0;
>  
[...]
>  	/* Cannot ftruncate over 2^31 bytes without large file support */
>  	if (small && length > MAX_NON_LFS)
> -		goto out_putf;
> +		return -EINVAL;

I'd leave this in do_sys_truncate().  No need for ioring to care about
this ancient problem.