[Devel] [PATCH vz10 v4 1/2] selftests: cgroup: test page cache limiting feature

[Pavel Tikhomirov]

> +static int vm_drop_caches(void)
> +{
> +	int fd;
> +	int ret = EXIT_SUCCESS;
> +
> +	fd = open("/proc/sys/vm/drop_caches", O_WRONLY);
> +	if (fd < 0) {
> +		ksft_perror("failed to open drop_caches");
> +		return EXIT_FAILURE;
> +	}
> +
> +	if (write(fd, "3", 1) != 1) {
> +		ksft_perror("failed to write to drop_caches");
> +		ret = EXIT_FAILURE;
> +	}
> +
> +	if (close(fd) < 0) {
> +		ksft_perror("failed to close drop_caches");
> +		ret = EXIT_FAILURE;
> +	}
> +
> +	return ret;
> +}

Can we maybe factor out this function (now used in both patches) and reuse it?

-- 
Best regards, Pavel Tikhomirov
Senior Software Developer, Virtuozzo.