[PATCH] slub: remove a minus instruction in get_partial_node

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

Don't do a minus action in get_partial_node function here, since
it is always zero.

Signed-off-by: Alex Shi <alex.shi@intel.com>
---
 mm/slub.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 492beab..eb36a6b 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1613,7 +1613,7 @@ static void *get_partial_node(struct kmem_cache *s,
 	spin_lock(&n->list_lock);
 	list_for_each_entry_safe(page, page2, &n->partial, lru) {
 		void *t = acquire_slab(s, n, page, object == NULL);
-		int available;
+		int available = 0;
 
 		if (!t)
 			continue;
@@ -1623,7 +1623,6 @@ static void *get_partial_node(struct kmem_cache *s,
 			c->node = page_to_nid(page);
 			stat(s, ALLOC_FROM_PARTIAL);
 			object = t;
-			available =  page->objects - page->inuse;
 		} else {
 			page->freelist = t;
 			available = put_cpu_partial(s, page, 0);
-- 
1.7.0



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