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Subject[PATCH v3 2/9] slab: move up code to get kmem_cache_node in free_block()
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node isn't changed, so we don't need to retreive this structure
everytime we move the object. Maybe compiler do this optimization,
but making it explicitly is better.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
mm/slab.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index f8a0ed1..19e2136 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3417,7 +3417,7 @@ static void free_block(struct kmem_cache *cachep, void **objpp, int nr_objects,
int node)
{
int i;
- struct kmem_cache_node *n;
+ struct kmem_cache_node *n = get_node(cachep, node);

for (i = 0; i < nr_objects; i++) {
void *objp;
@@ -3427,7 +3427,6 @@ static void free_block(struct kmem_cache *cachep, void **objpp, int nr_objects,
objp = objpp[i];

page = virt_to_head_page(objp);
- n = get_node(cachep, node);
list_del(&page->lru);
check_spinlock_acquired_node(cachep, node);
slab_put_obj(cachep, page, objp, node);
--
1.7.9.5


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