SLUB: do not fail on broken memory configurations

Print a big fat warning and do what is necessary to continue if a node is
marked as up (meaning either node is online (upstream) or node has memory
(Andrew's tree)) but allocations from the node do not succeed.

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

diff --git a/mm/slub.c b/mm/slub.c
index 0c106d73f9c5195d6819a0f298e551a4d580159c..04151da399c6ce8c344409c2ce7fbf289ac645e5 100644 (file)
--- 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);