Re: [RFC PATCH 3/3] mm/map_contig: Add mmap(MAP_CONTIG) support

[Michal Hocko]

On Mon 16-10-17 11:02:24, Cristopher Lameter wrote:
> On Mon, 16 Oct 2017, Michal Hocko wrote:
> 
> > > So I mmap(MAP_CONTIG) 1GB working of working memory, prefer some data
> > > structures there, maybe recieve from network, then decide to write
> > > some and not write some other.
> >
> > Why would you want this?
> 
> Because we are receiving a 1GB block of data and then wan to write it to
> disk. Maybe we want to modify things a bit and may not write all that we
> received.
 
And why do you need that in a single contiguous numbers? If performance,
do you have any numbers that would clearly tell the difference?

-- 
Michal Hocko
SUSE Labs