linux-kernel - Re: BUG in ofcs2_change_file

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Date:	Wed, 20 Jun 2012 14:56:59 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Luis Henriques <luis.henriques@...onical.com>
Cc:	Bret Towe <magnade@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	ocfs2-devel@....oracle.com, mfasheh@...e.com, jlbec@...lplan.org,
	Sunil Mushran <sunil.mushran@...cle.com>
Subject: Re: BUG in ofcs2_change_file_space

On Wed, 20 Jun 2012 19:01:30 +0100
Luis Henriques <luis.henriques@...onical.com> wrote:

> >> a patch has been available for this for a while now
> >> found here: http://oss.oracle.com/pipermail/ocfs2-devel/2012-January/008464.html
> >> but it still has not hit mainline
> >> is there any way we can get this included?
> 
> I believe something like this would be more appropriated, as a NULL as the
> 'file' parameter seems to be valid in that context:
> 
> ---
>  fs/ocfs2/file.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
> index 6e39668..84822a4 100644
> --- a/fs/ocfs2/file.c
> +++ b/fs/ocfs2/file.c
> @@ -1950,7 +1950,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
>  	if (ret < 0)
>  		mlog_errno(ret);
>  
> -	if (file->f_flags & O_SYNC)
> +	if (file && (file->f_flags & O_SYNC))
>  		handle->h_sync = 1;
>  
>  	ocfs2_commit_trans(osb, handle);

Sunil, does this look OK to you?  And Bret, can you please test it?

Luis, can you please prepare a proper, signed-off, changelogged version
of this and I'll grab it, thanks.


I'm not seeing any OCFS2 activity in mainline from Joel and Mark in six
months, so I'm getting those i-have-a-new-subsystem-to-maintain
feelings.

If anyone else has any urgent OCFS2 patches then please resend them, cc
myself and cc linux-kernel.

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