From: Alex,Shi <alex.shi@intel.com>
Date: Wed, 7 Sep 2011 02:26:36 +0000 (+0800)
Subject: slub: Code optimization in get_partial_node()
X-Git-Tag: upstream/snapshot3+hdmi~8912^2^3~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=12d79634f8d7af5229b7d21143d50e7cf7d94177;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

slub: Code optimization in get_partial_node()

I find a way to reduce a variable in get_partial_node(). That is also helpful
for code understanding.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---

diff --git a/mm/slub.c b/mm/slub.c
index 0e286ac..4982fb5 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1600,7 +1600,6 @@ static void *get_partial_node(struct kmem_cache *s,
 {
 	struct page *page, *page2;
 	void *object = NULL;
-	int count = 0;
 
 	/*
 	 * Racy check. If we mistakenly see no partial slabs then we
@@ -1613,17 +1612,16 @@ 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, count == 0);
+		void *t = acquire_slab(s, n, page, object == NULL);
 		int available;
 
 		if (!t)
 			break;
 
-		if (!count) {
+		if (!object) {
 			c->page = page;
 			c->node = page_to_nid(page);
 			stat(s, ALLOC_FROM_PARTIAL);
-			count++;
 			object = t;
 			available =  page->objects - page->inuse;
 		} else {