linux-kernel - [PATCH] percpu: make pcpu_alloc_chunk() use pcpu_mem

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Message-Id: <1397454460-19694-1-git-send-email-nasa4836@gmail.com>
Date:	Mon, 14 Apr 2014 13:47:40 +0800
From:	Jianyu Zhan <nasa4836@...il.com>
To:	tj@...nel.org, cl@...ux-foundation.org
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	nasa4836@...il.com
Subject: [PATCH] percpu: make pcpu_alloc_chunk() use pcpu_mem_free() instead of kfree()

pcpu_chunk_struct_size = sizeof(struct pcpu_chunk) +
	BITS_TO_LONGS(pcpu_unit_pages) * sizeof(unsigned long)

It hardly could be ever bigger than PAGE_SIZE even for large-scale machine,
but for consistency with its couterpart pcpu_mem_zalloc(),
use pcpu_mem_free() instead.

Commit b4916cb17c261a6043bcb2a98d0d6512497a7cf8 addressed this
problem, but missed this one.

Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
---
 mm/percpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 63e24fb..2ddf9a9 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -610,7 +610,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void)
 	chunk->map = pcpu_mem_zalloc(PCPU_DFL_MAP_ALLOC *
 						sizeof(chunk->map[0]));
 	if (!chunk->map) {
-		kfree(chunk);
+		pcpu_mem_free(chunk, pcpu_chunk_struct_size);
 		return NULL;
 	}
 
-- 
1.9.0.GIT

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