On Tue 20-12-16 21:57:43, Geliang Tang wrote:
> Use rb_entry_safe() instead of open-coding it.
>
> Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> ---
> mm/vmalloc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> index a558438..b9999fc 100644
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -2309,7 +2309,7 @@ EXPORT_SYMBOL_GPL(free_vm_area);
> #ifdef CONFIG_SMP
> static struct vmap_area *node_to_va(struct rb_node *n)
> {
> - return n ? rb_entry(n, struct vmap_area, rb_node) : NULL;
> + return rb_entry_safe(n, struct vmap_area, rb_node);
> }
>
> /**
> --
> 2.9.3
>
--
Michal Hocko
SUSE Labs
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