linux-kernel - Re: [Patch] pipe: use file_update_time() when hold i

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Message-ID: <4A65934B.9050904@redhat.com>
Date:	Tue, 21 Jul 2009 18:07:07 +0800
From:	Amerigo Wang <amwang@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org, heiko.carstens@...ibm.com,
	linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
	mszeredi@...e.cz
Subject: Re: [Patch] pipe: use file_update_time() when hold i_mutex

Andrew Morton wrote:
> On Mon, 6 Jul 2009 01:35:30 -0400
> Amerigo Wang <amwang@...hat.com> wrote:
>
>   
>> file_update_time() should be called with i_mutex held,
>> move it before mutex_unlock().
>>
>>     
>
> Why do you believe that file_update_time() needs i_mutex?
>   
file_update_time() modifies inode, no? :)

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