releases/3.10.42/percpu-make-pcpu_alloc_chunk-use-pcpu_mem_free-instead-of-kfree.patch

From 5a838c3b60e3a36ade764cf7751b8f17d7c9c2da Mon Sep 17 00:00:00 2001
From: Jianyu Zhan <nasa4836@gmail.com>
Date: Mon, 14 Apr 2014 13:47:40 +0800
Subject: percpu: make pcpu_alloc_chunk() use pcpu_mem_free() instead of kfree()

From: Jianyu Zhan <nasa4836@gmail.com>

commit 5a838c3b60e3a36ade764cf7751b8f17d7c9c2da upstream.

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 b4916cb17c26 ("percpu: make pcpu_free_chunk() use
pcpu_mem_free() instead of kfree()") addressed this problem, but
missed this one.

tj: commit message updated

Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 099a19d91ca4 ("percpu: allow limited allocation before slab is online)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 mm/percpu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -612,7 +612,7 @@ static struct pcpu_chunk *pcpu_alloc_chu
 	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;
 	}