linux-kernel - Re: [PATCH 1/4] CacheFiles: Use the ->write() file op rather than a special kernel aop

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Message-ID: <9759.1238752316@redhat.com>
Date:	Fri, 03 Apr 2009 10:51:56 +0100
From:	David Howells <dhowells@...hat.com>
To:	nickpiggin@...oo.com.au, hch@...radead.org
Cc:	dhowells@...hat.com, nfsv4@...ux-nfs.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 1/4] CacheFiles: Use the ->write() file op rather than a special kernel aop

David Howells <dhowells@...hat.com> wrote:

> This reverts the patch:
> 
> 	CacheFiles: Add a hook to write a single page of data to an inode
> 
> 	Add an address space operation to write one single page of data to an
> 	inode at a page-aligned location (thus permitting the implementation to
> 	be highly optimised).  The data source is a single page.
> 
> 	This is used by CacheFiles to store the contents of netfs pages into
> 	their backing file pages.
> 
> 	Supply a generic implementation for this that uses the write_begin()
> 	and write_end() address_space operations to bind a copy directly into
> 	the page cache.
> 
> 	Hook the Ext2 and Ext3 operations to the generic implementation.

Actually, it doesn't.  I split that out into the next patch, but I forgot to
edit the patch description.

David
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