linux-kernel - Re: [PATCH 02/10] mm: system wide ALLOC_NO

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 for Android: free password hash cracker in your pocket

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

Message-Id: <200708061148.43870.phillips@phunq.net>
Date:	Mon, 6 Aug 2007 11:48:43 -0700
From:	Daniel Phillips <phillips@...nq.net>
To:	Christoph Lameter <clameter@....com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	David Miller <davem@...emloft.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Phillips <phillips@...gle.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Matt Mackall <mpm@...enic.com>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Steve Dickson <SteveD@...hat.com>
Subject: Re: [PATCH 02/10] mm: system wide ALLOC_NO_WATERMARK

On Monday 06 August 2007 11:42, Christoph Lameter wrote:
> On Mon, 6 Aug 2007, Daniel Phillips wrote:
> > Currently your system likely would have died here, so ending up
> > with a reserve page temporarily on the wrong node is already an
> > improvement.
>
> The system would have died? Why?

Because a block device may have deadlocked here, leaving the system 
unable to clean dirty memory, or unable to load executables over the 
network for example.

> The application in the cpuset that ran out of memory should have died
> not the system. 

If your "application" is a virtual block device then you can land in 
deep doodoo.

Regards,

Daniel
-
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/