On Mon, Nov 21, 2011 at 05:18:21PM +0800, Wu Fengguang wrote:

From: Nikanth Karthikesan <redacted>

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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