linux-kernel - Re: [PATCH 3/5] mm, memory_hotplug: drop pointless block alignment checks from __offline

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Message-ID: <1542364443.3020.3.camel@suse.com>
Date:   Fri, 16 Nov 2018 11:34:03 +0100
From:   osalvador <osalvador@...e.com>
To:     Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Baoquan He <bhe@...hat.com>,
        Anshuman Khandual <anshuman.khandual@....com>,
        linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: Re: [PATCH 3/5] mm, memory_hotplug: drop pointless block alignment
 checks from __offline_pages

On Fri, 2018-11-16 at 09:30 +0100, Michal Hocko wrote:
> From: Michal Hocko <mhocko@...e.com>
> 
> This function is never called from a context which would provide
> misaligned pfn range so drop the pointless check.
> 
> Signed-off-by: Michal Hocko <mhocko@...e.com>

I vaguely remember that someone reported a problem about misaligned
range on powerpc.
Not sure at which stage was (online/offline).
Although I am not sure if that was valid at all.

Reviewed-by: Oscar Salvador <osalvador@...e.de>