From mboxrd@z Thu Jan  1 00:00:00 1970
From: Izik Eidus <izik@qumranet.com>
Subject: Re: KSM Algorithm
Date: Thu, 10 Jul 2008 08:40:33 -0500
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To: Sukanto Ghosh <sukanto.cse.iitb@gmail.com>
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=D7=A6=D7=99=D7=98=D7=95=D7=98 Sukanto Ghosh:
> One more query, what if multiple processes call ioctl KSM_CREATE_SCAN
> ? Will there be multiple scanners ?
>  =20
yes

> Consider a scenario where two processes A & B separately call
> KSM_CREATE_SCAN and then start registering some memory pages/areas vi=
a
> KSM_CREATE_SHARED_MEMORY_AREA ioctl.
> Lets say A registers 4 pages having content X, Y, Z and X . And,
> process B registers 2 pages having content Z and X.
> So, will there be only single copy each of X, Y and Z in the entire
> system or will they be kept separately i.e the scanner for A maintain=
s
> X, Y, Z single copy each and scanner for B maintains X and Z
> separately.
>  =20
there will be only one copy,
ksm is multi threaded safe.

>
>  =20