Re: [PATCH 1/2] memcg: flatten task_struct->memcg_oom

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On Fri, Aug 28, 2015 at 06:01:58PM -0400, Tejun Heo wrote:
> task_struct->memcg_oom is a sub-struct containing fields which are
> used for async memcg oom handling.  Most task_struct fields aren't
> packaged this way and it can lead to unnecessary alignment paddings.
> This patch flattens it.
> 
> * task.memcg_oom.memcg          -> task.memcg_in_oom
> * task.memcg_oom.gfp_mask	-> task.memcg_oom_gfp_mask
> * task.memcg_oom.order          -> task.memcg_oom_order
> * task.memcg_oom.may_oom        -> task.memcg_may_oom
> 
> In addition, task.memcg_may_oom is relocated to where other bitfields
> are which reduces the size of task_struct.
> 
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>

Reviewed-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>

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