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Message-ID: <18284.1378315570@warthog.procyon.org.uk>
Date:	Wed, 04 Sep 2013 18:26:10 +0100
From:	David Howells <dhowells@...hat.com>
To:	Milosz Tanski <milosz@...in.com>
Cc:	dhowells@...hat.com, Hongyi Jia <jiayisuse@...il.com>,
	ceph-devel <ceph-devel@...r.kernel.org>,
	Sage Weil <sage@...tank.com>,
	"Yan, Zheng" <zheng.z.yan@...el.com>,
	"linux-cachefs@...hat.com" <linux-cachefs@...hat.com>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] new fscache interface to check cache consistency

Milosz Tanski <milosz@...in.com> wrote:

> If the cache is withdrawn and we're starting anew I would consider
> that to okay. I would consider an empty page cache for a cookie to be
> consistent since there's nothing stale that I can read. Unless there's
> another synchronization issue that I'm missing in fscache.

The problem is that the fscache_object struct may be deallocated whilst you're
using it.

David
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