lkml.org 
[lkml]   [2017]   [Dec]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/2] mm: introduce MAP_FIXED_SAFE
On Wed, Dec 06, 2017 at 03:51:44PM +1100, Michael Ellerman wrote:
> Cyril Hrubis <chrubis@suse.cz> writes:
>
> > Hi!
> >> > MAP_FIXED_UNIQUE
> >> > MAP_FIXED_ONCE
> >> > MAP_FIXED_FRESH
> >>
> >> Well, I can open a poll for the best name, but none of those you are
> >> proposing sound much better to me. Yeah, naming sucks...
> >
> > Given that MAP_FIXED replaces the previous mapping MAP_FIXED_NOREPLACE
> > would probably be a best fit.
>
> Yeah that could work.
>
> I prefer "no clobber" as I just suggested, because the existing
> MAP_FIXED doesn't politely "replace" a mapping, it destroys the current
> one - which you or another thread may be using - and clobbers it with
> the new one.

It's longer than MAP_FIXED_WEAK :-P

You'd have to be pretty darn strong to clobber an existing mapping.

\
 
 \ /
  Last update: 2017-12-06 05:55    [W:0.139 / U:0.340 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site