Re: page locking from application

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Hi,

Le Fri, 21 Jul 2006 14:28:13 +0530,
"Linux Learner" <learner.kernel@xxxxxxxxx> a écrit :

> Is it possible to do some kind of page locking or pinning from
> application, so that kernel doesn't swap out the page as long as
> application is alive? For example, I want a global variable's address
> to be valid in kernel (here validity only means the page corresponding
> to user space virtual address to be present).

Use copy_from_user() in the kernel. It will automagically fetch the
page from swap or from anywhere it is.

Sincerly,

Thomas
-- 
Thomas Petazzoni - thomas.petazzoni@xxxxxxxx
http://{thomas,sos,kos}.enix.org - http://www.toulibre.org
http://www.{livret,agenda}dulibre.org

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