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-rw-r--r--mm/slab.c33
1 files changed, 28 insertions, 5 deletions
diff --git a/mm/slab.c b/mm/slab.c
index ef9f60fe37d6..681837499d7d 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3418,7 +3418,7 @@ const char *kmem_cache_name(struct kmem_cache *cachep)
EXPORT_SYMBOL_GPL(kmem_cache_name);
/*
- * This initializes kmem_list3 for all nodes.
+ * This initializes kmem_list3 or resizes varioius caches for all nodes.
*/
static int alloc_kmemlist(struct kmem_cache *cachep)
{
@@ -3433,10 +3433,13 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
if (!new_alien)
goto fail;
- new_shared = alloc_arraycache(node, cachep->shared*cachep->batchcount,
+ new_shared = alloc_arraycache(node,
+ cachep->shared*cachep->batchcount,
0xbaadf00d);
- if (!new_shared)
+ if (!new_shared) {
+ free_alien_cache(new_alien);
goto fail;
+ }
l3 = cachep->nodelists[node];
if (l3) {
@@ -3445,7 +3448,8 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
spin_lock_irq(&l3->list_lock);
if (shared)
- free_block(cachep, shared->entry, shared->avail, node);
+ free_block(cachep, shared->entry,
+ shared->avail, node);
l3->shared = new_shared;
if (!l3->alien) {
@@ -3460,8 +3464,11 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
continue;
}
l3 = kmalloc_node(sizeof(struct kmem_list3), GFP_KERNEL, node);
- if (!l3)
+ if (!l3) {
+ free_alien_cache(new_alien);
+ kfree(new_shared);
goto fail;
+ }
kmem_list3_init(l3);
l3->next_reap = jiffies + REAPTIMEOUT_LIST3 +
@@ -3473,7 +3480,23 @@ static int alloc_kmemlist(struct kmem_cache *cachep)
cachep->nodelists[node] = l3;
}
return 0;
+
fail:
+ if (!cachep->next.next) {
+ /* Cache is not active yet. Roll back what we did */
+ node--;
+ while (node >= 0) {
+ if (cachep->nodelists[node]) {
+ l3 = cachep->nodelists[node];
+
+ kfree(l3->shared);
+ free_alien_cache(l3->alien);
+ kfree(l3);
+ cachep->nodelists[node] = NULL;
+ }
+ node--;
+ }
+ }
return -ENOMEM;
}