tree c97b81660f38ff7a06196dc47b92bd5f44c26305
parent 57487f4376e16558ccbe45a5b41d8cb5192309a4
author Christoph Lameter <clameter@engr.sgi.com> 1127450642 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1127452655 -0700

[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>