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Date: Thu, 1 Jun 2006 22:20:45 +0200
From: Olaf Hering <olh@suse.de>
To: Chris Mason <mason@suse.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org,
       Al Viro <viro@ftp.linux.org.uk>
Subject: Re: [PATCH] cramfs corruption after BLKFLSBUF on loop device
Message-ID: <20060601202045.GA32423@suse.de>
References: <20060529214011.GA417@suse.de> <20060530182453.GA8701@suse.de> <20060601184938.GA31376@suse.de> <200606011617.03166.mason@suse.com>
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 On Thu, Jun 01, Chris Mason wrote:

> I think this will work (but have not tested it).  Another option is to create 
> a read_cache_page that pins the page via a page flag 
> that invalidate_mapping_pages will honor.

PageLocked or PageDirty, the latter only with a mb().