linux-kernel - Re: [PATCH 05/18] [PATCH] BLOCK: Don't call block_sync

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Message-ID: <15995.1156854308@warthog.cambridge.redhat.com>
Date:	Tue, 29 Aug 2006 13:25:08 +0100
From:	David Howells <dhowells@...hat.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Chris Wedgwood <cw@...f.org>, David Howells <dhowells@...hat.com>,
	axboe@...nel.dk, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/18] [PATCH] BLOCK: Don't call block_sync_page() from AFS [try #4] 

Christoph Hellwig <hch@...radead.org> wrote:

> AFS never sets a backing_dev_info on it's own and thus uses
> &default_backing_dev_info which sets the unplug_io_fn to
> default_unplug_io_fn.  default_unplug_io_fn is a no-op, and thus
> block_sync_page does nothing for AFS.

I'm sure I used to require this for when there was a local cache on disk.
Maybe things have changed, or maybe I'm misremembering.

David
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