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Bug#597658: Wouldn't it be better solved the /etc/modprobe.d/blacklist.conf?

On Fri, Oct 22, 2010 at 02:41:50PM +0200, Klaus Umbach wrote:
> Wouldn't it be better, to put the module in /etc/modprobe.d/blacklist.conf,
> instead of disabling it completely? So those who are able to use it, can
> still load it and do not have to build their own kernel.

blacklist.conf applies to every installed kernel version, and is actually
owned by udev.  For this reason we never blacklist modules in that way. 

> This module lowers the CPU usage of kcryptd from 90% to 25% on my machine,
> when writing to disk. So it would be great to have it.

What we can do is to disable auto-loading by removing the device table
from the module.  The user can then force loading at boot time by editing
/etc/modules or /etc/initramfs-tools/modules (depending on how early the
module should be loaded).


Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus

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