From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: Andrew Morton <akpm@osdl.org>, pj@sgi.com, linux-kernel@vger.kernel.org
Subject: Re: Terminate process that fails on a constrained allocation
Date: Thu, 9 Feb 2006 00:57:09 +0100 [thread overview]
Message-ID: <200602090057.10232.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.62.0602081547180.5184@schroedinger.engr.sgi.com>
On Thursday 09 February 2006 00:54, Christoph Lameter wrote:
> On Wed, 8 Feb 2006, Andrew Morton wrote:
>
> > > If a caller cannot handle NULL then __GFP_NOFAIL has to be set, right?
> >
> > That would assume non-buggy code. I'm talking about the exercising of
> > hitherto-unused codepaths. We've fixed many, many pieces of code which
> > simply assumed that kmalloc(GFP_KERNEL) succeeds. I doubt if many such
> > simple bugs still exist, but there will be more subtle ones in there.
>
> We could add __GFP_NOFAIL to kmem_getpages in slab.c to insure that
> kmalloc waits rather than return NULL. Also a too drastic measure right?
Definitely too drastic. I bet that would cause deadlocks in quite some loads.
-Andi
next prev parent reply other threads:[~2006-02-08 23:57 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-08 18:05 Terminate process that fails on a constrained allocation Christoph Lameter
2006-02-08 18:13 ` Andi Kleen
2006-02-08 18:34 ` Paul Jackson
2006-02-08 18:54 ` Christoph Lameter
2006-02-08 19:01 ` Andi Kleen
2006-02-08 19:15 ` Christoph Lameter
2006-02-08 18:33 ` Paul Jackson
2006-02-08 18:42 ` Christoph Lameter
2006-02-08 18:57 ` Paul Jackson
2006-02-08 19:02 ` Christoph Lameter
2006-02-08 19:05 ` Andi Kleen
2006-02-08 20:22 ` Paul Jackson
2006-02-08 20:36 ` Christoph Lameter
2006-02-08 20:55 ` Paul Jackson
2006-02-08 21:01 ` Andi Kleen
2006-02-08 21:03 ` Paul Jackson
2006-02-08 21:21 ` Andi Kleen
2006-02-08 21:39 ` Andrew Morton
2006-02-08 22:11 ` Christoph Lameter
2006-02-08 22:41 ` Andi Kleen
2006-02-08 23:29 ` Christoph Lameter
2006-02-08 23:35 ` Andrew Morton
2006-02-08 22:48 ` Christoph Lameter
2006-02-08 23:28 ` Christoph Lameter
2006-02-08 23:43 ` Andrew Morton
2006-02-08 23:54 ` Christoph Lameter
2006-02-08 23:57 ` Andi Kleen [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-02-08 20:14 linux
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