[PATCH] SLUB: Do not fail on broken memory configurations

[Christoph Lameter]

Print a big fat warning and do what is necessary to continue if a node
is marked as up but allocations from the node do not succeed.

Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
---
 mm/slub.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 1488e71..fc82751 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1877,9 +1877,16 @@ static struct kmem_cache_node * __init early_kmem_cache_node_alloc(gfp_t gfpflag
 
 	BUG_ON(kmalloc_caches->size < sizeof(struct kmem_cache_node));
 
-	page = new_slab(kmalloc_caches, gfpflags | GFP_THISNODE, node);
-
+	page = new_slab(kmalloc_caches, gfpflags, node);
 	BUG_ON(!page);
+
+	if (page_to_nid(page) != node) {
+		printk(KERN_ERR "SLUB: Unable to allocate memory from "
+				"node %d\n", node);
+		printk(KERN_ERR "SLUB: Allocating a useless per node structure"
+				" in order to be able to continue\n");
+	}
+
 	n = page->freelist;
 	BUG_ON(!n);
 	page->freelist = get_freepointer(kmalloc_caches, n);
-- 
1.5.2.4


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/