Re: Allow setting of number of raw devices as a module parameter

[Dave Jones <davej@redhat.com>]

On Fri, Apr 29, 2011 at 05:07:04PM -0700, Greg KH wrote:
 > On Fri, Apr 29, 2011 at 04:28:17PM -0700, Andrew Morton wrote:
 > > On Fri, 29 Apr 2011 00:24:29 +0200
 > > Jan Kara <jack@suse.cz> wrote:
 > > 
 > > > Allow setting of maximal number of raw devices as a module parameter. This
 > > > requires changing of static array into a vmalloced one (the array is going to
 > > > be too large for kmalloc).
 > > > 
 > > 
 > > Changelog failed to describe why the patch is needed.  Lacking that
 > > information, we have no reason to apply it.
 > 
 > Good point, how about:
 > 	People like running their machines with thousands of raw
 > 	devices, yet distros don't want to take up that much memory for
 > 	all users.  Provide a way for everyone to be happy without
 > 	forcing the module to be rebuilt by providing the ability to
 > 	specify the number of raw devices as a module parameter option.

I remember when this was made a config option, thinking "8192 raw devices?
who would need that many?".  I have to wonder just how someone manages
a system with an insane number of these devices.

	Dave