Need to disable interrupts when taking the node list lock.
Signed-off-by: Christoph Lameter <cl@xxxxxxxxx>
---
mm/slub.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c 2011-09-02 10:12:03.601176577 -0500
+++ linux-2.6/mm/slub.c 2011-09-02 10:12:25.981176437 -0500
@@ -1609,6 +1609,7 @@ static struct page *get_partial_node(str
struct kmem_cache_node *n)
{
struct page *page;
+ unsigned long flags;
/*
* Racy check. If we mistakenly see no partial slabs then we
@@ -1619,13 +1620,13 @@ static struct page *get_partial_node(str
if (!n || !n->nr_partial)
return NULL;
- spin_lock(&n->list_lock);
+ spin_lock_irqsave(&n->list_lock, flags);
list_for_each_entry(page, &n->partial, lru)
if (acquire_slab(s, n, page))
goto out;
page = NULL;
out:
- spin_unlock(&n->list_lock);
+ spin_unlock_irqrestore(&n->list_lock, flags);
return page;
}
--
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