From: Chris Mason <chris.mason@oracle.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: block discard.
Date: Fri, 08 Aug 2008 09:56:32 -0400 [thread overview]
Message-ID: <1218203792.15342.235.camel@think.oraclecorp.com> (raw)
In-Reply-To: <1218202998.12232.161.camel@pmac.infradead.org>
On Fri, 2008-08-08 at 14:43 +0100, David Woodhouse wrote:
> Playing with the trim/punch/discard support, I tried the patch below. It
> see it getting invoked at times, but when I create a large file and then
> delete it, I don't see it getting invoked _enough_. And when I grep the
> block device for the contents of the file, they're still there.
>
> I have a suspicion my added code is only getting invoked for
> metadata/tree extents, not the actual data extents. What'd I miss?
>
So you mkfs ; dd large file ; rm large file ; look for discards?
Try rm large file ; sync ; sync; look for discards
-chris
next prev parent reply other threads:[~2008-08-08 13:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-08 13:43 block discard David Woodhouse
2008-08-08 13:56 ` Chris Mason [this message]
2008-08-08 14:05 ` David Woodhouse
2008-08-08 14:10 ` David Woodhouse
2008-08-08 14:13 ` Chris Mason
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