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Re: [Qemu-block] [Qemu-devel] [PATCH v2 26/32] qcow2: Update qcow2_trunc

From: Eric Blake
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH v2 26/32] qcow2: Update qcow2_truncate() to support L2 slices
Date: Tue, 16 Jan 2018 17:14:26 -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:
> The qcow2_truncate() code is mostly independent from whether
> we're using L2 slices or full L2 tables, but in full and
> falloc preallocation modes new L2 tables are allocated using
> qcow2_alloc_cluster_link_l2().  Therefore the code needs to be
> modified to ensure that all nb_clusters that are processed in each
> call can be allocated with just one L2 slice.
> Signed-off-by: Alberto Garcia <address@hidden>
> ---
>  block/qcow2.c | 5 +++--
>  1 file changed, 3 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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