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Re: [Qemu-block] [Qemu-devel] [PATCH v2 12/32] qcow2: Add offset_to_l1_i

From: Eric Blake
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH v2 12/32] qcow2: Add offset_to_l1_index()
Date: Tue, 16 Jan 2018 16:03:00 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2

On 12/15/2017 06:53 AM, Alberto Garcia wrote:
> Similar to offset_to_l2_index(), this function returns the index in
> the L1 table for a given guest offset. This is only used in a couple
> of places and it's not a particularly complex calculation, but it
> makes the code a bit more readable.
> Although in the qcow2_get_cluster_offset() case the old code was
> taking advantage of the l1_bits variable, we're going to get rid of
> the other uses of l1_bits in a later patch anyway, so it doesn't make
> sense to keep it just for this.
> Signed-off-by: Alberto Garcia <address@hidden>
> ---
>  block/qcow2-cluster.c | 4 ++--
>  block/qcow2.h         | 5 +++++
>  2 files changed, 7 insertions(+), 2 deletions(-)

Reviewed-by: Eric Blake <address@hidden>

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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