[PATCH 2/2] slub: reduce a variable in __slab_free()

["Alex,Shi" <alex.shi@intel.com>]

After the compxchg, the new.inuse are fixed in __slab_free as a local
variable, so we don't need a extra variable for it.

This patch is also base on 'slub/partial' head of penberg's tree. 

Signed-off-by: Alex Shi <alex.shi@intel.com>
---
 mm/slub.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index bca8eee..c1f803f 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2452,7 +2452,6 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
 	void *prior;
 	void **object = (void *)x;
 	int was_frozen;
-	int inuse;
 	struct page new;
 	unsigned long counters;
 	struct kmem_cache_node *n = NULL;
@@ -2495,7 +2494,6 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
 
 			}
 		}
-		inuse = new.inuse;
 
 	} while (!cmpxchg_double_slab(s, page,
 		prior, counters,
@@ -2526,7 +2524,7 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
 	 */
 	if (was_frozen)
 		stat(s, FREE_FROZEN);
-	else if (unlikely(!inuse && n->nr_partial > s->min_partial))
+	else if (unlikely(!new.inuse && n->nr_partial > s->min_partial))
                         goto slab_empty;
 
 	spin_unlock_irqrestore(&n->list_lock, flags);
-- 
1.7.0



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