This is a note to let you know that I've just added the patch titled
percpu: make pcpu_alloc_chunk() use pcpu_mem_free() instead of kfree()
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
percpu-make-pcpu_alloc_chunk-use-pcpu_mem_free-instead-of-kfree.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5a838c3b60e3a36ade764cf7751b8f17d7c9c2da Mon Sep 17 00:00:00 2001
From: Jianyu Zhan <nasa4836@xxxxxxxxx>
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@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Fixes: 099a19d91ca4 ("percpu: allow limited allocation before slab is online)
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
Patches currently in stable-queue which might be from nasa4836@xxxxxxxxx are
queue-3.14/percpu-make-pcpu_alloc_chunk-use-pcpu_mem_free-instead-of-kfree.patch
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