From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Christoph Lameter <cl@linux.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>, LKML <linux-kernel@vger.kernel.org>,
Pekka Enberg <penberg@cs.helsinki.fi>,
Rik van Riel <riel@redhat.com>,
David Rientjes <rientjes@google.com>,
Pavel Emelyanov <xemul@openvz.org>
Subject: Re: [PATCH -tip] mm: introduce __GFP_PANIC modifier
Date: Mon, 4 May 2009 18:12:56 +0400 [thread overview]
Message-ID: <20090504141256.GK4173@lenovo> (raw)
In-Reply-To: <alpine.DEB.1.10.0905040940490.9553@qirst.com>
[Christoph Lameter - Mon, May 04, 2009 at 09:47:45AM -0400]
|
|
| Could you try to avoid consuming another GFP flag? __GFP_BITS_SHIFT is
| used elsewhere to figure out where to put miscellanous flags into the gfp
| mask. This is pretty limited right now and so the patch does work.
|
| But maybe we can combine some flags __GFP_NOFAIL | __GFP_REPEAT or so?
|
| __GFP_NOFAIL already has the semantics that the allocation cannot fail and
| that the page allocator must never return NULL.
|
|
As I see page allocator already quite modified in -mm tree.
Christoph will kmalloc with (__GFP_NOFAIL | __GFP_REPEAT)
inform us on exhausted memory? Or we just stuck with blank
screen instead (not blank actually but with previous messages)?
-- Cyrill
next prev parent reply other threads:[~2009-05-04 14:13 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-04 12:27 [PATCH -tip] mm: introduce __GFP_PANIC modifier Cyrill Gorcunov
2009-05-04 13:13 ` Ingo Molnar
2009-05-04 13:16 ` Cyrill Gorcunov
2009-05-04 13:47 ` Christoph Lameter
2009-05-04 14:12 ` Cyrill Gorcunov [this message]
2009-05-04 14:13 ` Christoph Lameter
2009-05-04 14:29 ` Cyrill Gorcunov
2009-05-04 15:20 ` Cyrill Gorcunov
2009-05-04 15:54 ` Christoph Lameter
2009-05-04 16:11 ` Cyrill Gorcunov
2009-05-04 19:11 ` Cyrill Gorcunov
2009-05-04 18:53 ` Andrew Morton
2009-05-04 19:21 ` Cyrill Gorcunov
2009-05-04 19:34 ` Andrew Morton
2009-05-04 20:09 ` Cyrill Gorcunov
2009-05-08 12:57 ` [RFC/PATCH v2] mm: Introduce GFP_PANIC for non-failing allocations Pekka Enberg
2009-05-08 13:37 ` Cyrill Gorcunov
2009-05-08 13:50 ` Pekka Enberg
2009-05-08 14:17 ` Christoph Lameter
2009-05-08 14:20 ` Christoph Lameter
2009-05-08 14:23 ` Pekka Enberg
2009-05-08 14:29 ` Christoph Lameter
2009-05-08 14:34 ` Pekka Enberg
2009-05-08 14:37 ` Rik van Riel
2009-05-08 14:39 ` Pekka Enberg
2009-05-08 14:43 ` Christoph Lameter
2009-05-04 19:23 ` [PATCH -tip] mm: introduce __GFP_PANIC modifier Mel Gorman
2009-05-04 19:35 ` Cyrill Gorcunov
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