Re: [patch 4/9] mm: memcontrol: catch root bypass in move precharge

[Michal Hocko]

On Wed 30-04-14 16:25:38, Johannes Weiner wrote:
[...]
> @@ -6546,8 +6546,9 @@ one_by_one:
>  			cond_resched();
>  		}
>  		ret = mem_cgroup_try_charge(memcg, GFP_KERNEL, 1, false);
> +		if (ret == -EINTR)
> +			__mem_cgroup_cancel_charge(root_mem_cgroup, 1);
>  		if (ret)
> -			/* mem_cgroup_clear_mc() will do uncharge later */

I would prefer to keep the comment and explain that we will loose return
code on the way and that is why cancel on root has to be done here.

>  			return ret;
>  		mc.precharge++;
>  	}
> -- 
> 1.9.2
> 

-- 
Michal Hocko
SUSE Labs
--
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/