[libc/string] State of PAGE_COPY_FWD / PAGE_COPY_THRESHOLD

[Florian Weimer]

On 11/10/2016 08:39 AM, Maxim Kuvyrkov wrote:

> A quick investigation shows that there is no such syscall provided by the Linux kernel.  Doesn't mean we can't ask for / implement one.

Linux did exactly this when you read a large block from /dev/zero.  It 
was removed because it did not provide any real benefit to applications. 
  It just looked very good in certain benchmarks.

Florian