[v2] Refactoring with clang-tidy

[Qemu-devel] [PATCH v2 08/29] qcow2: use DIV_ROUND_UP

Posted by Marc-André Lureau 8 years, 7 months ago

I used the clang-tidy qemu-round check to generate the fix:
https://github.com/elmarco/clang-tools-extra

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 block/qcow2-cluster.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index f06c08f64c..30db942dde 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -61,7 +61,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
             new_l1_size = 1;
         }
         while (min_size > new_l1_size) {
-            new_l1_size = (new_l1_size * 3 + 1) / 2;
+            new_l1_size = DIV_ROUND_UP(new_l1_size * 3, 2);
         }
     }
 
-- 
2.13.1.395.gf7b71de06

Re: [Qemu-devel] [PATCH v2 08/29] qcow2: use DIV_ROUND_UP

Posted by Eric Blake 8 years, 7 months ago

On 07/13/2017 11:31 AM, Marc-André Lureau wrote:
> I used the clang-tidy qemu-round check to generate the fix:
> https://github.com/elmarco/clang-tools-extra
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  block/qcow2-cluster.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

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

> 
> diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
> index f06c08f64c..30db942dde 100644
> --- a/block/qcow2-cluster.c
> +++ b/block/qcow2-cluster.c
> @@ -61,7 +61,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
>              new_l1_size = 1;
>          }
>          while (min_size > new_l1_size) {
> -            new_l1_size = (new_l1_size * 3 + 1) / 2;
> +            new_l1_size = DIV_ROUND_UP(new_l1_size * 3, 2);
>          }
>      }
>  
> 

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

Re: [Qemu-devel] [PATCH v2 08/29] qcow2: use DIV_ROUND_UP

Posted by Richard Henderson 8 years, 7 months ago

On 07/13/2017 06:31 AM, Marc-André Lureau wrote:
> I used the clang-tidy qemu-round check to generate the fix:
> https://github.com/elmarco/clang-tools-extra
> 
> Signed-off-by: Marc-André Lureau<marcandre.lureau@redhat.com>
> ---
>   block/qcow2-cluster.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Richard Henderson <rth@twiddle.net>


r~