From: Christoph Lameter <clameter@engr.sgi.com>
Date: Fri, 23 Sep 2005 04:44:02 +0000 (-0700)
Subject: [PATCH] slab: fix handling of pages from foreign NUMA nodes
X-Git-Tag: v2.6.14-rc3~51^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff69416e6323fe9d38c42a06ebdefeb58bbe9336;p=pandora-kernel.git

[PATCH] slab: fix handling of pages from foreign NUMA nodes

The numa slab allocator may allocate pages from foreign nodes onto the
lists for a particular node if a node runs out of memory.  Inspecting the
slab->nodeid field will not reflect that the page is now in use for the
slabs of another node.

This patch fixes that issue by adding a node field to free_block so that
the caller can indicate which node currently uses a slab.

Also removes the check for the current node from kmalloc_cache_node since
the process may shift later to another node which may lead to an allocation
on another node than intended.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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