linux-kernel - Re: [PATCH RESEND] fs: Move bh_cachep to the __read

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Message-ID: <7099287.sBUlOcEXo4@vlad>
Date:	Tue, 03 Jul 2012 12:08:37 +0300
From:	Vlad Zolotarov <vlad@...lemp.com>
To:	viro@...iv.linux.org.uk
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Shai@...lemp.com
Subject: Re: [PATCH RESEND] fs: Move bh_cachep to the __read_mostly section

On Monday 28 May 2012 14:58:42 Vlad Zolotarov wrote:
> From: Shai Fultheim <shai@...lemp.com>
> 
> bh_cachep is only written to once on initialization, so move it to the
> __read_mostly section.
> 
> Signed-off-by: Shai Fultheim <shai@...lemp.com>
> Signed-off-by: Vlad Zolotarov <vlad@...lemp.com>
> ---
>  fs/buffer.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/buffer.c b/fs/buffer.c
> index ad5938c..838a9cf 100644
> --- a/fs/buffer.c
> +++ b/fs/buffer.c
> @@ -3152,7 +3152,7 @@ SYSCALL_DEFINE2(bdflush, int, func, long, data)
>  /*
>   * Buffer-head allocation
>   */
> -static struct kmem_cache *bh_cachep;
> +static struct kmem_cache *bh_cachep __read_mostly;
> 
>  /*
>   * Once the number of bh's in the machine exceeds this level, we start

Al, my apologies, I missed that the patch has been applied on May 15-th. :)

thanks,
vlad
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