Re: [PATCH -next v4] mm/hotplug: silence a lockdep splat with printk()

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To: David Hildenbrand <david@xxxxxxxxxx>
Subject: Re: [PATCH -next v4] mm/hotplug: silence a lockdep splat with printk()
From: Qian Cai <cai@xxxxxx>
Date: Fri, 17 Jan 2020 08:30:24 -0500
Cc: akpm@xxxxxxxxxxxxxxxxxxxx, mhocko@xxxxxxxxxx, sergey.senozhatsky.work@xxxxxxxxx, pmladek@xxxxxxxx, rostedt@xxxxxxxxxxx, peterz@xxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Michal Hocko <mhocko@xxxxxxxx>
In-reply-to: <6f924bf7-835b-0176-1b12-aff4f1f4be0e@redhat.com>
References: <6f924bf7-835b-0176-1b12-aff4f1f4be0e@redhat.com>


> On Jan 17, 2020, at 7:53 AM, David Hildenbrand <david@xxxxxxxxxx> wrote:
> 
> Can't we just use the zone_idx() stored in the memmap instead?

I am having a hard time to guess what that means. Care to elaborate?

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  - From: David Hildenbrand

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