linux-kernel - Re: -mm merge plans for 2.6.23

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: <46A85D95.509@kingswood-consulting.co.uk>
Date:	Thu, 26 Jul 2007 09:38:45 +0100
From:	Frank Kingswood <frank@...gswood-consulting.co.uk>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Nick Piggin <nickpiggin@...oo.com.au>,
	Ray Lee <ray-lk@...rabbit.org>,
	Jesper Juhl <jesper.juhl@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	ck list <ck@....kolivas.org>, Ingo Molnar <mingo@...e.hu>,
	Paul Jackson <pj@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: -mm merge plans for 2.6.23

Andi Kleen wrote:
> One simple way to fix this would be to implement a fadvise() flag
> that puts the dentry/inode on a "soon to be expired" list if there
> are no other references. Then if a dentry allocation needs more
> memory try to reuse dentries from that list (or better queue) first. Any other
> access will remove the dentry from the list. 
> 
> Disadvantage would be that the userland would need to be patched,
> but I guess it's better than adding very dubious heuristics to the
> kernel.

Are you going to change every single large memory application in the 
world? As I wrote before, it is *not* about updatedb, but about all 
applications that use a lot of memory, and then terminate.

Frank
-
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/