Need to disable interrupts when taking the nodelist 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 2011-11-09 11:11:48.831693571 -0600
+++ linux-2.6/mm/slub.c 2011-11-09 11:11:53.611721013 -0600
@@ -1532,6 +1532,7 @@ static void *get_partial_node(struct kme
{
struct page *page, *page2;
void *object = NULL;
+ unsigned long flags;
/*
* Racy check. If we mistakenly see no partial slabs then we
@@ -1542,7 +1543,7 @@ static void *get_partial_node(struct kme
if (!n || !n->nr_partial)
return NULL;
- spin_lock(&n->list_lock);
+ spin_lock_irqsave(&n->list_lock, flags);
list_for_each_entry_safe(page, page2, &n->partial, lru) {
void *t = acquire_slab(s, n, page, object == NULL);
int available;
@@ -1563,7 +1564,7 @@ static void *get_partial_node(struct kme
break;
}
- spin_unlock(&n->list_lock);
+ spin_unlock_irqrestore(&n->list_lock, flags);
return object;
}
--
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