Re: [PATCH v4 3/5] selftests/mm: move write_file helper to vm_util

["David Hildenbrand (Arm)" <david@kernel.org>]

> +
> +void write_file(const char *path, const char *buf, size_t buflen)
> +{
> +	int fd;
> +	ssize_t numwritten;
> +
> +	fd = open(path, O_WRONLY);
> +	if (fd == -1)
> +		ksft_exit_fail_msg("%s open failed: %s\n", path, strerror(errno));
> +
> +	numwritten = write(fd, buf, buflen - 1);
> +	close(fd);
> +	if (numwritten < 1)
> +		ksft_exit_fail_msg("Write failed\n");
I guess we could indeed test here easily for

	if (numwritten != buflen - 1)

But then, we don't really expect only partial writes to succeed here.

Acked-by: David Hildenbrand (Arm) <david@kernel.org>

-- 
Cheers,

David