Re: [uml-devel] O_DIRECT (was: Swapping directly to host swap area?)

[Goetz Bock <bock@blacknet.de>]

On Tue, Jan 27 '04 at 23:39, Jeff Dike wrote:
> > In the current setup, the host kernel sees this as a normal
> > write to an open file, caching it in the process and so not truly
> > freeing up the ram for a bit. 
> 
> This is, and this could be done by setting O_DIRECT on UML swap
> devices.  That way, writes go directly (and asynchronously) to the
> device without landing in the cache.
Please bare with me, if this seams a stupid qestion, but my C skills are
pritty lacking :-(

But could we get this as an option for all ubd devices?

(I'm using Logical Volumes as base for ubd devices, and have no swap on
 my hosts)
-- 
/"\ Goetz Bock at blacknet dot de  --  secure mobile Linux everNETting
\ /                     (c) 2003 as GNU FDL 1.1
 X   [ 1. Use descriptive subjects - 2. Edit a reply for brevity -  ]
/ \  [ 3. Reply to the list - 4. Read the archive *before* you post ]


-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
http://www.eclipsecon.org/osdn
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel