[PATCH][RFC] Allow explicit shrinking of arena heaps using an environment variable

[Siddhesh Poyarekar]

On Tue, 31 Jul 2012 01:24:14 -0400, KOSAKI wrote:
> but..
> Why do we need PROT_NONE? just for /proc/maps?
> 

For me, yes, which is why it is not worth doing if there is a
performance hit. I'll actually be testing mmap vs madvise vs
madvise+mprotect to get a perspective of how things are right now.

Regards,
Siddhesh