Re: [PATCH 7/7] memcg : remove ugly vairable initialization bycallers

[Daisuke Nishimura]

On Fri, 21 Jan 2011 15:50:51 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote:

> This is a promised one.
> ==
> From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
> 
> This patch is for removing initialization in caller of memory cgroup
> function. Some memory cgroup uses following style to bring the result
> of start function to the end function for avoiding races.
> 
>    mem_cgroup_start_A(&(*ptr))
>    /* Something very complicated can happen here. */
>    mem_cgroup_end_A(*ptr)
> 
> In some calls, *ptr should be initialized to NULL be caller. But
> it's ugly. This patch fixes that *ptr is initialized by _start
> function.
> 
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

Acked-by: Daisuke Nishimura <nishimura@xxxxxxxxxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/