linux-kernel - [PATCH 33/36] vmalloc,rcu: convert call_rcu(rcu_free_va) to kfree

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Message-ID: <4D82DBA3.5020306@cn.fujitsu.com>
Date:	Fri, 18 Mar 2011 12:12:19 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>,
	Namhyung Kim <namhyung@...il.com>,
	Pekka Enberg <penberg@...nel.org>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 33/36] vmalloc,rcu: convert call_rcu(rcu_free_va) to kfree_rcu()



The rcu callback rcu_free_va() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(rcu_free_va).

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
 mm/vmalloc.c |    9 +--------
 1 files changed, 1 insertions(+), 8 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index f9b1667..fe38e30 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -416,13 +416,6 @@ overflow:
 	return va;
 }
 
-static void rcu_free_va(struct rcu_head *head)
-{
-	struct vmap_area *va = container_of(head, struct vmap_area, rcu_head);
-
-	kfree(va);
-}
-
 static void __free_vmap_area(struct vmap_area *va)
 {
 	BUG_ON(RB_EMPTY_NODE(&va->rb_node));
@@ -439,7 +432,7 @@ static void __free_vmap_area(struct vmap_area *va)
 	if (va->va_end > VMALLOC_START && va->va_end <= VMALLOC_END)
 		vmap_area_pcpu_hole = max(vmap_area_pcpu_hole, va->va_end);
 
-	call_rcu(&va->rcu_head, rcu_free_va);
+	kfree_rcu(va, rcu_head);
 }
 
 /*
-- 
1.7.4
--
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