Re: [PATCH 2/8] readahead: make default readahead size a kernelparameter

From: Christoph Hellwig
Date: Mon Nov 21 2011 - 05:01:45 EST


On Mon, Nov 21, 2011 at 05:18:21PM +0800, Wu Fengguang wrote:
> From: Nikanth Karthikesan <knikanth@xxxxxxx>
>
> Add new kernel parameter "readahead=", which allows user to override
> the static VM_MAX_READAHEAD=128kb.

Is a boot-time paramter really such a good idea? I would at least make
it a sysctl so that it's run-time controllable, including beeing able
to set it from initscripts.

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