linux-kernel - Re: [Resend Patch] kexec: allow to shrink reserved memory

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Message-ID: <m1d439f2q3.fsf@fess.ebiederm.org>
Date:	Mon, 23 Nov 2009 11:41:40 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Amerigo Wang <amwang@...hat.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	Andi Kleen <andi@...stfloor.org>,
	Neil Horman <nhorman@...hat.com>
Subject: Re: [Resend Patch] kexec: allow to shrink reserved memory

Amerigo Wang <amwang@...hat.com> writes:

> This patch implements shrinking the reserved memory for crash kernel,
> if it is more than enough.
>
> For example, if you have already reserved 128M, now you just want 100M,
> you can do:
>
> # echo $((100*1024*1024)) > /sys/kernel/kexec_crash_size
>
> Note, you can only do this before loading the crash kernel.

Acked-by: "Eric W. Biederman" <ebiederm@...ssion.com>

Looks good to me.

Eric


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