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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20110430112937.06024368@lxorguk.ukuu.org.uk>
Date:	Sat, 30 Apr 2011 11:29:37 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jan Kara <jack@...e.cz>, LKML <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>
Subject: Re: Allow setting of number of raw devices as a module parameter

On Fri, 29 Apr 2011 16:28:17 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> On Fri, 29 Apr 2011 00:24:29 +0200
> Jan Kara <jack@...e.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).

A large vmalloc array is very antisocial on a 32bit x86 box. It looks
like almost all of it would become sane if there was an array of pointers
to raw devices and the devices were initially allocated on need (even if
for now only recovered on rmmod)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/