linux-kernel - Re: [PATCH v4 4/8] mm/memory_hotplug: Poison memmap in remove_pfn_range_from

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Message-ID: <33aa0a97-8264-c3f5-ee4d-c7dc64cdb6aa@redhat.com>
Date:   Thu, 26 Sep 2019 11:14:25 +0200
From:   David Hildenbrand <david@...hat.com>
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>,
        linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Oscar Salvador <osalvador@...e.de>,
        Michal Hocko <mhocko@...e.com>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH v4 4/8] mm/memory_hotplug: Poison memmap in
 remove_pfn_range_from_zone()

On 26.09.19 11:10, Aneesh Kumar K.V wrote:
> David Hildenbrand <david@...hat.com> writes:
>  @@ -134,11 +134,12 @@ void memunmap_pages(struct dev_pagemap *pgmap)
>   
>>  	mem_hotplug_begin();
>> +	remove_pfn_range_from_zone(page_zone(pfn_to_page(pfn)), pfn,
>> +				   PHYS_PFN(resource_size(res)));
> 
> That should be part of PATCH 3?

I thought about that but moved it to #4, because it easily gets lost in
the already-big-enough-patch and is a NOP for ZONE_DEVICE before this
change.

Thanks!

-- 

Thanks,

David / dhildenb