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SubjectRe: [RFC][-mm PATCH 8/8] Add switch to control what type of pages to limit (v3)
On 7/20/07, Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> -static struct mem_container init_mem_container;
> +static ssize_t mem_control_type_read(struct container *cont,
> + struct cftype *cft,
> + struct file *file, char __user *userbuf,
> + size_t nbytes, loff_t *ppos)
> +{
> + unsigned long val;
> + char buf[64], *s;
> + struct mem_container *mem;
> +
> + mem = mem_container_from_cont(cont);
> + s = buf;
> + val = mem->control_type;
> + s += sprintf(s, "%lu\n", val);
> + return simple_read_from_buffer((void __user *)userbuf, nbytes,
> + ppos, buf, s - buf);
> +}

This could just use the read_uint64() hook and be something like

static u64 mem_container_control_type_read(struct container *cont,
struct cftype *cft)
{
return mem_container_from_cont(cont)->control_type;
}

Paul
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