* [PATCH] mm/vmalloc.c: use rb_entry_safe
[not found] <1e433cd03b01a3e89a22de5aa160b3442ff0cf16.1482222608.git.geliangtang@gmail.com>
@ 2016-12-20 13:57 ` Geliang Tang
2016-12-20 14:35 ` Michal Hocko
0 siblings, 1 reply; 2+ messages in thread
From: Geliang Tang @ 2016-12-20 13:57 UTC (permalink / raw)
To: Andrew Morton, zijun_hu, David Rientjes, Michal Hocko,
Vladimir Davydov, Chris Wilson
Cc: Geliang Tang, linux-mm, linux-kernel
Use rb_entry_safe() instead of open-coding it.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
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
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] mm/vmalloc.c: use rb_entry_safe
2016-12-20 13:57 ` [PATCH] mm/vmalloc.c: use rb_entry_safe Geliang Tang
@ 2016-12-20 14:35 ` Michal Hocko
0 siblings, 0 replies; 2+ messages in thread
From: Michal Hocko @ 2016-12-20 14:35 UTC (permalink / raw)
To: Geliang Tang
Cc: Andrew Morton, zijun_hu, David Rientjes, Vladimir Davydov,
Chris Wilson, linux-mm, linux-kernel
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@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
> ---
> 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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2016-12-20 13:57 ` [PATCH] mm/vmalloc.c: use rb_entry_safe Geliang Tang
2016-12-20 14:35 ` Michal Hocko
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