linux-kernel - Re: [PATCH 3/3 v3] mm/vmalloc: Cache the vmalloc memory info

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: <CA+55aFwG_ifxOQ7YLqbrRF3kqx8XAMesB3MHG2LQ_SF9RQH7Xw@mail.gmail.com>
Date:	Tue, 25 Aug 2015 09:39:50 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:	Ingo Molnar <mingo@...nel.org>, George Spelvin <linux@...izon.com>,
	Dave Hansen <dave@...1.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Rik van Riel <riel@...hat.com>,
	David Rientjes <rientjes@...gle.com>
Subject: Re: [PATCH 3/3 v3] mm/vmalloc: Cache the vmalloc memory info

On Sun, Aug 23, 2015 at 2:56 PM, Rasmus Villemoes
<linux@...musvillemoes.dk> wrote:
>
> [Maybe one could just remove the fields and see if anybody actually
> notices/cares any longer. Or, if they are only used by kernel
> developers, put them in their own file.]

I'm actually inclined to try exactly that for 4.3, and then take
Ingo's patch as a fallback in case somebody actually notices.

I'm not convinced anybody actually uses those values, and they are
getting *less* relevant rather than more (on 64-bit, those values
really don't matter, since the vmalloc space isn't really a
limitation), so let's try removing them and seeing what happens. And
then we know what we can do if somebody does actually notice.

                     Linus
--
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/