[PATCH v2] mm/slub.c: replace kmem_cache->cpu_partial with wrapped APIs

[qiwuchen55@gmail.com]

From: chenqiwu <chenqiwu@xiaomi.com>

There are slub_cpu_partial() and slub_set_cpu_partial() APIs
to wrap kmem_cache->cpu_partial. This patch will use the two
APIs to replace kmem_cache->cpu_partial in slub code.

Signed-off-by: chenqiwu <chenqiwu@xiaomi.com>
---
changes in v2:
 - rewrite the commit title.
---
 mm/slub.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/mm/slub.c b/mm/slub.c
index 17dc00e..1eb888c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2284,7 +2284,7 @@ static void put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
 		if (oldpage) {
 			pobjects = oldpage->pobjects;
 			pages = oldpage->pages;
-			if (drain && pobjects > s->cpu_partial) {
+			if (drain && pobjects > slub_cpu_partial(s)) {
 				unsigned long flags;
 				/*
 				 * partial array is full. Move the existing
@@ -2309,7 +2309,7 @@ static void put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
 
 	} while (this_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page)
 								!= oldpage);
-	if (unlikely(!s->cpu_partial)) {
+	if (unlikely(!slub_cpu_partial(s))) {
 		unsigned long flags;
 
 		local_irq_save(flags);
@@ -3493,15 +3493,15 @@ static void set_cpu_partial(struct kmem_cache *s)
 	 *    50% to keep some capacity around for frees.
 	 */
 	if (!kmem_cache_has_cpu_partial(s))
-		s->cpu_partial = 0;
+		slub_set_cpu_partial(s, 0);
 	else if (s->size >= PAGE_SIZE)
-		s->cpu_partial = 2;
+		slub_set_cpu_partial(s, 2);
 	else if (s->size >= 1024)
-		s->cpu_partial = 6;
+		slub_set_cpu_partial(s, 6);
 	else if (s->size >= 256)
-		s->cpu_partial = 13;
+		slub_set_cpu_partial(s, 13);
 	else
-		s->cpu_partial = 30;
+		slub_set_cpu_partial(s, 30);
 #endif
 }
 
-- 
1.9.1