Re: [PATCH] qcow2: Return the original error code in qcow2_co_pwrite_zeroes()

[Eric Blake]

On 9/9/20 7:37 AM, Alberto Garcia wrote:
> This function checks the current status of a (sub)cluster in order to
> see if an unaligned 'write zeroes' request can be done efficiently by
> simply updating the L2 metadata and without having to write actual
> zeroes to disk.
>
> If the situation does not allow using the fast path then the function
> returns -ENOTSUP and the caller falls back to writing zeroes.
>
> If can happen however that the aforementioned check returns an actual
> error code so in this case we should pass it to the caller.
>
> Signed-off-by: Alberto Garcia <berto@igalia.com>
> ---
>   block/qcow2.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

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Eric Blake, Principal Software Engineer
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