linux-kernel - Re: [PATCH] ksm: change default values to better fit into mainline kernel

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Date:	Wed, 23 Sep 2009 13:37:35 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Izik Eidus <ieidus@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	hugh.dickins@...cali.co.uk, aarcange@...hat.com, ieidus@...hat.com
Subject: Re: [PATCH] ksm: change default values to better fit into mainline
 kernel

On Wed, 23 Sep 2009 23:05:47 +0300
Izik Eidus <ieidus@...hat.com> wrote:

> +static void __init ksm_init_max_kernel_pages(void)
> +{
> +	ksm_max_kernel_pages = nr_free_buffer_pages() / 4;
> +}
> +
>  static int __init ksm_slab_init(void)
>  {
>  	rmap_item_cache = KSM_KMEM_CACHE(rmap_item, 0);
> @@ -1667,6 +1673,8 @@ static int __init ksm_init(void)
>  	struct task_struct *ksm_thread;
>  	int err;
>  
> +	ksm_init_max_kernel_pages();

Was it really worth creating a new function for this?

--- a/mm/ksm.c~ksm-change-default-values-to-better-fit-into-mainline-kernel-fix
+++ a/mm/ksm.c
@@ -184,11 +184,6 @@ static DEFINE_SPINLOCK(ksm_mmlist_lock);
 		sizeof(struct __struct), __alignof__(struct __struct),\
 		(__flags), NULL)
 
-static void __init ksm_init_max_kernel_pages(void)
-{
-	ksm_max_kernel_pages = nr_free_buffer_pages() / 4;
-}
-
 static int __init ksm_slab_init(void)
 {
 	rmap_item_cache = KSM_KMEM_CACHE(rmap_item, 0);
@@ -1673,7 +1668,7 @@ static int __init ksm_init(void)
 	struct task_struct *ksm_thread;
 	int err;
 
-	ksm_init_max_kernel_pages();
+	ksm_max_kernel_pages = nr_free_buffer_pages() / 4;
 
 	err = ksm_slab_init();
 	if (err)
_

oh well, whatever.
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