linux-kernel - Re: [PATCH] ocfs2: Cocci spatch "memdup.spatch"

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Message-ID: <20130610024645.GF13405@ZenIV.linux.org.uk>
Date:	Mon, 10 Jun 2013 03:46:45 +0100
From:	Joel Becker <jlbec@...lplan.org>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ocfs2: Cocci spatch "memdup.spatch"

Acked-by: Joel Becker <jlbec@...lplan.org>

On Sat, Jun 01, 2013 at 11:41:12AM +0200, Thomas Meyer wrote:
> 
> Signed-off-by: Thomas Meyer <thomas@...3r.de>
> ---
> 
> diff -u -p a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
> --- a/fs/ocfs2/localalloc.c
> +++ b/fs/ocfs2/localalloc.c
> @@ -434,12 +434,11 @@ void ocfs2_shutdown_local_alloc(struct o
>  	bh = osb->local_alloc_bh;
>  	alloc = (struct ocfs2_dinode *) bh->b_data;
>  
> -	alloc_copy = kmalloc(bh->b_size, GFP_NOFS);
> +	alloc_copy = kmemdup(alloc, bh->b_size, GFP_NOFS);
>  	if (!alloc_copy) {
>  		status = -ENOMEM;
>  		goto out_commit;
>  	}
> -	memcpy(alloc_copy, alloc, bh->b_size);
>  
>  	status = ocfs2_journal_access_di(handle, INODE_CACHE(local_alloc_inode),
>  					 bh, OCFS2_JOURNAL_ACCESS_WRITE);
> @@ -1244,13 +1243,12 @@ static int ocfs2_local_alloc_slide_windo
>  	 * local alloc shutdown won't try to double free main bitmap
>  	 * bits. Make a copy so the sync function knows which bits to
>  	 * free. */
> -	alloc_copy = kmalloc(osb->local_alloc_bh->b_size, GFP_NOFS);
> +	alloc_copy = kmemdup(alloc, osb->local_alloc_bh->b_size, GFP_NOFS);
>  	if (!alloc_copy) {
>  		status = -ENOMEM;
>  		mlog_errno(status);
>  		goto bail;
>  	}
> -	memcpy(alloc_copy, alloc, osb->local_alloc_bh->b_size);
>  
>  	status = ocfs2_journal_access_di(handle,
>  					 INODE_CACHE(local_alloc_inode),
> 
> 
> --
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