[023/155] mm/slub.c: replace kmem_cache->cpu_partial with wrapped APIs

Commit Message

Andrew Morton April 2, 2020, 4:04 a.m. UTC

From: chenqiwu <[e-mail]>
Subject: mm/slub.c: replace kmem_cache->cpu_partial with wrapped APIs

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.

Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: chenqiwu <[e-mail]>
Reviewed-by: Andrew Morton <[e-mail]>
Cc: Christoph Lameter <[e-mail]>
Cc: Pekka Enberg <[e-mail]>
Cc: David Rientjes <[e-mail]>
Cc: Joonsoo Kim <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 mm/slub.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

Patch

--- a/mm/slub.c~mm-slubc-replace-kmem_cache-cpu_partial-with-wrapped-apis
+++ a/mm/slub.c
@@ -2282,7 +2282,7 @@  static void put_cpu_partial(struct kmem_
 		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
@@ -2307,7 +2307,7 @@  static void put_cpu_partial(struct kmem_
 
 	} 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);
@@ -3512,15 +3512,15 @@  static void set_cpu_partial(struct kmem_
 	 *    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
 }