linux-kernel - [PATCH] mm/slab.c: Delete the if judgment and return the result directly Remove the if judgment and return the result directly to reduce assembly statements.

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Message-Id: <20230111083102.111535-1-lvqian@nfschina.com>
Date:   Wed, 11 Jan 2023 16:31:02 +0800
From:   lvqian@...china.com
To:     cl@...ux.co, penberg@...nel.org, rientjes@...gle.com, kim@....com,
        akpm@...ux-foundation.org, vbabka@...e.cz,
        roman.gushchin@...ux.dev, 42.hyeyoo@...il.com
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        lvqian <lvqian@...china.com>
Subject: [PATCH] mm/slab.c: Delete the if judgment and return the result directly Remove the if judgment and return the result directly to reduce assembly  statements.

From: lvqian <lvqian@...china.com>

diff --git a/mm/slab.c b/mm/slab.c
index 7a269db050ee..713265fe2dea 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1415,11 +1415,8 @@ static void kmem_rcu_free(struct rcu_head *head)
 #if DEBUG
 static bool is_debug_pagealloc_cache(struct kmem_cache *cachep)
 {
-	if (debug_pagealloc_enabled_static() && OFF_SLAB(cachep) &&
-		(cachep->size % PAGE_SIZE) == 0)
-		return true;
-
-	return false;
+	return debug_pagealloc_enabled_static() && OFF_SLAB(cachep) &&
+			((cachep->size % PAGE_SIZE) == 0);
 }
 
 #ifdef CONFIG_DEBUG_PAGEALLOC
-- 
2.34.1