Re: [PATCH] domain_page: handle NULL within unmap_domain_page() itself

[Wei Liu <wl@xxxxxxx>]

On Wed, May 13, 2020 at 04:43:33PM +0100, Hongyan Xia wrote:
> From: Hongyan Xia <hongyxia@xxxxxxxxxx>
> 
> The macro version UNMAP_DOMAIN_PAGE() does both NULL checking and
> variable clearing. Move NULL checking into the function itself so that
> the semantics is consistent with other similar constructs like XFREE().
> This also eases the use unmap_domain_page() in error handling paths,
> where we only care about NULL checking but not about variable clearing.
> 
> Signed-off-by: Hongyan Xia <hongyxia@xxxxxxxxxx>

Reviewed-by: Wei Liu <wl@xxxxxxx>