linux-kernel - Re: [PATCH 1 of 2] block_page

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Message-ID: <45FE61D3.90105@yahoo.com.au>
Date:	Mon, 19 Mar 2007 21:11:31 +1100
From:	Nick Piggin <nickpiggin@...oo.com.au>
To:	Christoph Hellwig <hch@...radead.org>
CC:	David Chinner <dgc@....com>, lkml <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 1 of 2] block_page_mkwrite() Implementation V2

Christoph Hellwig wrote:
> On Mon, Mar 19, 2007 at 10:30:08AM +1100, David Chinner wrote:
> 
>>Generic page_mkwrite functionality.
>>
>>Filesystems that make use of the VM ->page_mkwrite() callout will generally use
>>the same core code to implement it. There are several tricky truncate-related
>>issues that we need to deal with here as we cannot take the i_mutex as we
>>normally would for these paths.  These issues are not documented anywhere yet
>>so block_page_mkwrite() seems like the best place to start.
> 
> 
> This will need some updates when ->fault replaces ->page_mkwrite.
> 
> Nich, what's the plan for merging ->fault?

I've got the patches in -mm now. I hope they will get merged when the
the next window opens.

I didn't submit the ->page_mkwrite conversion yet, because I didn't
have any callers to look at. It is is slightly less trivial than for
nopage and nopfn, so having David's block_page_mkwrite is helpful.

-- 
SUSE Labs, Novell Inc.
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