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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>, Michal Hocko <mhocko@suse.cz>,
	Andrew Morton <akpm@linux-foundation.org>,
	Hugh Dickins <hughd@google.com>,
	linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
	linux-parisc@vger.kernel.org,
	David Rientjes <rientjes@google.com>
Subject: Re: [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards
Date: Tue, 19 Apr 2011 16:48:36 -0500	[thread overview]
Message-ID: <1303249716.11237.26.camel@mulgrave.site> (raw)
In-Reply-To: <alpine.DEB.2.00.1104191627040.23077@router.home>

On Tue, 2011-04-19 at 16:39 -0500, Christoph Lameter wrote:
> On Tue, 19 Apr 2011, James Bottomley wrote:
> 
> > > I guess DISCONTIGMEM is typically used together with NUMA. Otherwise we
> > > would have run into this before.
> >
> > Which bit of my telling you that six architectures already use it this
> > way did you not get?  I'm not really interested in reconciling your
> > theories with how we currently operate.  If you want to require NUMA
> > with DISCONTIGMEM, fine, we'll just define SLUB as broken if that's not
> > true ... that will fix my boot panic reports.
> 
> Which part of me telling you that you will break lots of other things in
> the core kernel dont you get?

I get that you tell me this ... however, the systems that, according to
you, should be failing to get to boot prompt do, in fact, manage it.

>  If you were able to get to a command prompt
> with SLAB then lets all be happy for as long as it lasts.

We can't re-engineer DISCONTIGMEM as a bug fix, so something like this
has to be done for stable regardless.

James


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  reply	other threads:[~2011-04-19 21:48 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-15 13:51 [PATCH] mm: make expand_downwards symmetrical to expand_upwards Michal Hocko
2011-04-18  3:00 ` Hugh Dickins
2011-04-18 10:01   ` [PATCH v2] " Michal Hocko
2011-04-18 20:56     ` Andrew Morton
     [not found]       ` <20110419091022.GA21689@tiehlicka.suse.cz>
2011-04-19 11:09         ` [PATCH followup] mm: get rid of CONFIG_STACK_GROWSUP || CONFIG_IA64 Michal Hocko
2011-04-20  0:33           ` KOSAKI Motohiro
2011-04-20  6:59             ` Michal Hocko
2011-04-20  7:08               ` KOSAKI Motohiro
2011-04-26  7:59           ` Michal Hocko
2011-04-19 11:10       ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards Michal Hocko
2011-04-19 15:46         ` James Bottomley
2011-04-19 16:06           ` [PATCH v3] mm: make expand_downwards symmetrical to John David Anglin
2011-04-19 16:59             ` James Bottomley
2011-04-19 16:07           ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards James Bottomley
2011-04-19 17:05           ` Pekka Enberg
2011-04-19 17:11             ` James Bottomley
2011-04-19 17:15               ` Christoph Lameter
2011-04-19 17:48                 ` James Bottomley
2011-04-19 18:10                   ` Christoph Lameter
2011-04-19 18:20                     ` James Bottomley
2011-04-19 18:35                       ` Christoph Lameter
2011-04-19 19:49                         ` James Bottomley
2011-04-19 20:56                           ` Christoph Lameter
2011-04-19 21:21                             ` James Bottomley
2011-04-19 21:39                               ` Christoph Lameter
2011-04-19 21:48                                 ` James Bottomley [this message]
2011-04-19 21:58                                   ` Christoph Lameter
2011-04-20  1:23                                     ` KOSAKI Motohiro
2011-04-20  2:48                                       ` James Bottomley
2011-04-20  2:57                                         ` KOSAKI Motohiro
2011-04-20 13:50                                           ` Christoph Lameter
2011-04-21 13:32                                             ` Tejun Heo
2011-04-20  5:53                                       ` Pekka Enberg
2011-04-20  7:15                                         ` KOSAKI Motohiro
2011-04-20  7:34                                           ` Pekka Enberg
2011-04-20  8:40                                             ` KOSAKI Motohiro
2011-04-20 16:32                                               ` James Bottomley
2011-04-20 16:50                                                 ` Christoph Lameter
2011-04-20 18:09                                                   ` James Bottomley
2011-04-20 21:18                                                 ` David Rientjes
2011-04-20 22:15                                                   ` James Bottomley
2011-04-20 23:12                                                     ` David Rientjes
2011-04-21 13:16                                                       ` KOSAKI Motohiro
2011-04-21 16:37                                                         ` James Bottomley
2011-04-21 18:33                                                           ` Christoph Lameter
2011-04-21 18:45                                                             ` Dave Hansen
2011-04-22 18:19                                                               ` James Bottomley
2011-04-22 20:24                                                                 ` Dave Hansen
2011-04-22 20:35                                                                   ` James Bottomley
2011-04-22 21:33                                                               ` James Bottomley
2011-04-23 18:34                                                                 ` [PATCH] convert parisc to sparsemem (was Re: [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards) James Bottomley
2011-04-24 16:27                                                                   ` John David Anglin
2011-04-26  0:32                                                                   ` KOSAKI Motohiro
2011-04-27 16:36                                                                   ` Dave Hansen
2011-04-21 20:05                                                             ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards James Bottomley
2011-04-21 21:07                                                               ` Christoph Lameter
2011-04-21 21:22                                                                 ` James Bottomley
2011-04-21 19:33                                                         ` David Rientjes
2011-04-22  0:34                                                           ` KOSAKI Motohiro
2011-04-21 13:03                                                   ` KOSAKI Motohiro
2011-04-21 19:38                                                     ` David Rientjes
2011-04-21 20:02                                                       ` Christoph Lameter
2011-04-21 21:19                                                         ` David Rientjes
2011-04-21 21:24                                                           ` James Bottomley
2011-04-21 21:34                                                             ` David Rientjes
2011-04-21 21:49                                                               ` James Bottomley
2011-04-21 22:12                                                                 ` David Rientjes
2011-04-22  8:02                                                                   ` Pekka Enberg
2011-04-22 13:49                                                                     ` James Bottomley
2011-04-22 17:00                                                                       ` Pekka Enberg
2011-04-22 17:03                                                                         ` James Bottomley
2011-04-21 21:41                                                           ` [patch] mm: always set nodes with regular memory in N_NORMAL_MEMORY David Rientjes
2011-04-22  0:36                                                             ` KOSAKI Motohiro
2011-04-20 21:05                                               ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards David Rientjes
2011-04-20 11:20                                             ` Matthew Wilcox
2011-04-20 11:28                                               ` Pekka Enberg
2011-04-20 14:15                                                 ` James Bottomley
2011-04-20 14:50                                                   ` Christoph Lameter
2011-04-20 15:02                                                     ` James Bottomley
2011-04-20 15:22                                                       ` Christoph Lameter
2011-04-20 19:25                                                         ` Matthew Wilcox
2011-04-20 21:42                                                         ` David Rientjes
2011-04-21 16:06                                                           ` James Bottomley
2011-04-21 22:19                                                             ` David Rientjes
2011-04-21 22:31                                                               ` James Bottomley
2011-04-20 13:58                                               ` Christoph Lameter
2011-04-20 21:34                                               ` David Rientjes
2011-04-20 14:07                                             ` Christoph Lameter
2011-04-20  2:33                                     ` James Bottomley
2011-04-19 17:12             ` Christoph Lameter

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