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From: Stefan Hajnoczi <stefanha@gmail.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-devel@nongnu.org, Anthony Liguori <aliguori@us.ibm.com>,
	Avi Kivity <avi@redhat.com>,
	Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [Qemu-devel] Re: [PATCH v4 3/5] qed: Table, L2 cache, and cluster functions
Date: Fri, 12 Nov 2010 17:40:41 +0000	[thread overview]
Message-ID: <AANLkTik68QJqnV4rptaiMo=McCNszhgSiFAdRJgpa3Nj@mail.gmail.com> (raw)
In-Reply-To: <4CDD78D9.8090909@redhat.com>

On Fri, Nov 12, 2010 at 5:26 PM, Kevin Wolf <kwolf@redhat.com> wrote:
> Am 28.10.2010 13:01, schrieb Stefan Hajnoczi:
>> This patch adds code to look up data cluster offsets in the image via
>> the L1/L2 tables.  The L2 tables are writethrough cached in memory for
>> performance (each read/write requires a lookup so it is essential to
>> cache the tables).
>>
>> With cluster lookup code in place it is possible to implement
>> bdrv_is_allocated() to query the number of contiguous
>> allocated/unallocated clusters.
>>
>> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
>
> Didn't find any obvious problems with this one, but maybe that just
> means that I'm tired and should stop working for today. ;-)

Thanks for your review effort, Kevin.

Stefan

  reply	other threads:[~2010-11-12 17:40 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-28 11:01 [Qemu-devel] [PATCH v4 0/5] qed: Add QEMU Enhanced Disk format Stefan Hajnoczi
2010-10-28 11:01 ` [Qemu-devel] [PATCH v4 1/5] docs: Add QED image format specification Stefan Hajnoczi
2010-11-12 13:58   ` [Qemu-devel] " Kevin Wolf
2010-11-12 14:04     ` Stefan Hajnoczi
2010-10-28 11:01 ` [Qemu-devel] [PATCH v4 2/5] qed: Add QEMU Enhanced Disk image format Stefan Hajnoczi
2010-11-12 15:43   ` [Qemu-devel] " Kevin Wolf
2010-11-12 16:34     ` Stefan Hajnoczi
2010-11-12 16:52       ` Kevin Wolf
2010-11-12 17:24         ` Markus Armbruster
2010-11-12 17:34           ` Kevin Wolf
2010-10-28 11:01 ` [Qemu-devel] [PATCH v4 3/5] qed: Table, L2 cache, and cluster functions Stefan Hajnoczi
2010-11-12 17:26   ` [Qemu-devel] " Kevin Wolf
2010-11-12 17:40     ` Stefan Hajnoczi [this message]
2010-10-28 11:01 ` [Qemu-devel] [PATCH v4 4/5] qed: Read/write support Stefan Hajnoczi
2010-10-28 11:01 ` [Qemu-devel] [PATCH v4 5/5] qed: Consistency check support Stefan Hajnoczi

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