From: Christian Krafft <krafft@de.ibm.com>
Date: Thu, 7 Dec 2006 04:32:41 +0000 (-0800)
Subject: [PATCH] enable booting a NUMA system where some nodes have no memory
X-Git-Tag: v2.6.20-rc1~145^2^2~328
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c309a64d6afa90a0a07813c836ba480aeaeca8c;p=pandora-kernel.git

[PATCH] enable booting a NUMA system where some nodes have no memory

When booting a NUMA system with nodes that have no memory (eg by limiting
memory), bootmem_alloc_core tried to find pages in an uninitialized
bootmem_map.  This caused a null pointer access.  This fix adds a check, so
that NULL is returned.  That will enable the caller (bootmem_alloc_nopanic)
to alloc memory on other without a panic.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Martin Bligh <mbligh@google.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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