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Commit a2f92ee7 authored by Christoph Lameter's avatar Christoph Lameter Committed by Linus Torvalds
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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: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9e86943b

mm/slub.c

+8 −1
Original line number Diff line number Diff line
@@ -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);