linux-kernel - Re: [PATCH 0/3] Bcache: version 4

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Message-ID: <63479.1272718901@localhost>
Date:	Sat, 01 May 2010 09:01:41 -0400
From:	Valdis.Kletnieks@...edu
To:	Kent Overstreet <kent.overstreet@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] Bcache: version 4

On Fri, 30 Apr 2010 16:12:13 -0800, Kent Overstreet said:

> Most of the basic functionality is now there; the most visible thing is
> it's now correctly saving all the metadata, so you can unload a cache
> and then reload it, and everything will still be there.

If you unload a cache and then reload it, what prevents it from serving
up now-stale data from an extent that was modified while the cache was
unloaded?

(Telling me "Get some caffeine, it's about halfway down in patch 2" or
"We'll add that in Version 6 of the patch" are both acceptable answers" :)

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