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Re: [Qemu-devel] [PATCH] qed: make qed_alloc_clusters round up offset to
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From: |
Stefan Hajnoczi |
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Subject: |
Re: [Qemu-devel] [PATCH] qed: make qed_alloc_clusters round up offset to nearest cluster |
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Date: |
Tue, 16 Aug 2011 17:22:43 +0100 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Aug 15, 2011 at 07:16:10PM -0400, Devin Nakamura wrote:
> @@ -263,6 +263,8 @@ static int qed_read_string(BlockDriverState *file,
> uint64_t offset, size_t n,
> */
> static uint64_t qed_alloc_clusters(BDRVQEDState *s, unsigned int n)
> {
> + s->file_size = qed_start_of_cluster(s, s->file_size +
> + s->header.cluster_size - 1);
Why do you need this? QED cluster aligns the file size on open.
file_size should always be cluster-aligned.
Stefan