linux-kernel - Re: [PATCH 2/6] fs/9p: call vmtruncate before setattr 9p opeation

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Message-ID: <87pqqbdkgf.fsf@linux.vnet.ibm.com>
Date:	Tue, 01 Mar 2011 19:14:16 +0530
From:	"Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	v9fs-developer@...ts.sourceforge.net,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] fs/9p: call vmtruncate before setattr 9p opeation

On Tue, 1 Mar 2011 07:10:12 -0500, Christoph Hellwig <hch@...radead.org> wrote:
> On Tue, Mar 01, 2011 at 02:21:20PM +0530, Aneesh Kumar K.V wrote:
> > We need to call vmtruncate before 9p setattr operation, otherwise we
> > could write back some dirty pages between setattr with ATTR_SIZE and vmtruncate
> > causing some truncated pages to be written back to server
> 
> Please read the documentation.  vmtruncate is deprecated and no new
> users may be added at this point.
> 

I actually didn't add a new user for vmtruncate. But i did missed the
fact that vmtruncate is deprecated. I will do a new patch to switch to
truncate_setsize.

-aneesh
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